CA1202389A - Spacer-damper for a bundled conductor for an electric line - Google Patents
Spacer-damper for a bundled conductor for an electric lineInfo
- Publication number
- CA1202389A CA1202389A CA000436678A CA436678A CA1202389A CA 1202389 A CA1202389 A CA 1202389A CA 000436678 A CA000436678 A CA 000436678A CA 436678 A CA436678 A CA 436678A CA 1202389 A CA1202389 A CA 1202389A
- Authority
- CA
- Canada
- Prior art keywords
- support
- core
- frame
- arm
- sub
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/12—Devices for maintaining distance between parallel conductors, e.g. spacer
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/12—Devices for maintaining distance between parallel conductors, e.g. spacer
- H02G7/125—Damping spacers
Landscapes
- Suspension Of Electric Lines Or Cables (AREA)
- Vibration Prevention Devices (AREA)
- Fluid-Damping Devices (AREA)
- Insulating Of Coils (AREA)
- Pens And Brushes (AREA)
- Communication Cables (AREA)
- Prostheses (AREA)
- Insulating Bodies (AREA)
- Springs (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Details Of Indoor Wiring (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
- Housings And Mounting Of Transformers (AREA)
- Magnetic Heads (AREA)
Abstract
ABSTRACT OF THE INVENTION
A device is provided for spacing apart and damping bundled conductors in an electric line. The device comprises a support, a plurality of arms each adapted to clamp about and hold at least one sub-conductor in the bundle of conductors and at least one flexible joint provided on said support and adapted to flexibly secure said arm to said support. The joint includes at least one frame integral with and secured to said support and located in a plane relative to the plane of the support, a core positioned within said at least one frame to which said at least one arm is attached, and at least one elastic element provided between the core and the at least one frame for retaining the core elastically within the frame. The frame may be located in the plane of the support or in an inclined plane relative to the plane of the support. Additionally, two or more frames may be provided, each located in a plane coincident with or parallel to the plane of the support. The elastic elements may be fabricated from elastomeric materials or they may be steel springs.
A device is provided for spacing apart and damping bundled conductors in an electric line. The device comprises a support, a plurality of arms each adapted to clamp about and hold at least one sub-conductor in the bundle of conductors and at least one flexible joint provided on said support and adapted to flexibly secure said arm to said support. The joint includes at least one frame integral with and secured to said support and located in a plane relative to the plane of the support, a core positioned within said at least one frame to which said at least one arm is attached, and at least one elastic element provided between the core and the at least one frame for retaining the core elastically within the frame. The frame may be located in the plane of the support or in an inclined plane relative to the plane of the support. Additionally, two or more frames may be provided, each located in a plane coincident with or parallel to the plane of the support. The elastic elements may be fabricated from elastomeric materials or they may be steel springs.
Description
:L2~;~Z~.3~3~
The present invention relates to a spacer-damper for bundled conductors of electric lines and, more partic~llarly, to such a device which is capable of substantiall~ damping the mov~ments of the individual sub-conductors from aeolian vibrations In bundled con~uctors of high and very high tension electric lines i.e.~ conductors composed of two or more sub-conductors ~or each electric phase, it is necessary to keep the correct mutual spacing of the sub-conductors along each span between adjacent towers as well as along the entire length of an electric line. It is further necessary to substantially damp the movements of the individual sub-conductors from aeolian vibrations, i.e., high frequency and small amplitude vibrations caused by weak winds as well as violent and large amplitude oscillations caused by strong winds.
Spacer-dampers are devices which are mounted on the electric lines in order to meet both of the above requirements.
Single joint spacer-dampers are disclosed, for example, in Italian Patent No. 936.310 owned by S.A.S. Officine Meccaniche Innocente Riganti di Innocente e Franco Riganti & C. of Solbiate Arno, Italy Multiple joint spacer-dampers are presently manufactured by DAMP
of Sovere, Italy and SALVI A. & C. of Milano, Italy.
The principle disadvantage of a single joint spacer-dampe such as the one-described,for example,in Italian Patent No. 936.31 is that, due to its reliance on a single joint, each arm is permitted to move only in an angular direction. Since angular oscilla~ions are centered in the joint center, there is no .q~
1 possibility of movement in the direction of the arm axis. The main disadvantayes of the multiple spacer-dampers of the two other cited manufacturers reside in the fact that while they are permitted to move in a number of directions, movement is restrict only in the plane perpendicular to the longitudinal axis of the sub-condutorsO Moreover, in all of these cLevices, the rigidity of the joint is nearly constant under aeolian vibrations and, as such, the damping effect depends only on the hysteresis of the elastic means comprised in the ~oints with almost all of the dissipated energy being transformed in heat which damages the elastic means. Furthermore, as in almost all these devices the elastomeric elastic means becomes compressed; A further disadvantage associated with such devices is that their performanc varies widely depending upon the external temperature at the time.
Finally, the prestresses of the elastic means result in the joints being extremely rigid and, conse~uently, such devices are not sensitive to small, exciting forces.
;P~.38~
OBJECTS AND SUMMARY OF THE_I~VENTION
An object bf the present invention is to provide a damping device which may be used in association with bundled conductors of high tension and very high tension electric lines.
It is another object of the present invention to provide such a damping device which substantially damps the movement of the individual sub-conductors from aeolian ~ibrations.
It is yet another object of the present invention to provide such a damping device which is capable of damping high frequency and small amplitude vibrations caused by weak winds and violent and large amplitude oscillations caused by strong winds.
The present invention, in brief summary, comprises a device for spacing apart and damping bundled conductors in an electric line. The device comprises a support, a plurality of arms each adapted to clamp about and hold at least one sub-conductor in the bundle of conductors and at least one flexible joint provided on said support and adapted to flexibly secure said arm to said support. The joint includes at least one frame integral with and secured to said support and located in a plane relative to the plane of the support, a core positioned within said at least one frame to which said at least one arm is attached, and at least one elastic element provided between the core and the at least one frame for retaining the core elastically within the frame. The frame may be located in the plane of the support or i an inclined plane relative to the plane of the support. Additionall 12~?~.3~l9 l two or more frames may be provided, each located in a plane coincident with or parallel to the plane of the support. The elastic elements may be fabricated from elastomeric materials or they may be steel springs.
The spacer-damper device, according to the present invention, comprises a support on which a plurality of arms are provided for holding sub-conductors. The arms which are articulated on the support, are provided in a number equal to the number of sub-conductors in the relevant bundle of conductors. A
joint is provided between the support and an arm which includes a clamp for securing same to the sub-conductors. The joint includes a frame integral with or fixed to the support and positioned in a plane containing the support; a core positioned within the frame ;
and a plurality of elastic elements each having one end fixed to the frame and the other end fixed to the core for keeping the core itself elastically within the frame. The elastic elements are symmetrically spaced around the periphery of the core. An arm having at one end thereof a clamp for clamping a sub-conductor is fixed at the other end to the core in such a manner that can move elastically within the frame under any action which the relevant sub-conductor can transmit in any direction to the arm.
In a first embodiment, each joint provided between the support and the arm includes one or more frames integral with or fixed to the support and provided in a p?ane which is inclined relative to the support; a core positioned within each frame; and a plurality of elastic elements each having one end fixed to the ,, ` 1~ 3~9 _ 1 corresponding core for keeping the core itself elastically within the frame. The elastic elements for each frame are symmetrically spaced around the periphery of the core. An arm which has at one end thereof a clamp for clamping a sub-conductor is fixedly mount to the core at its opposite end, said arm being permitted to move elastically within the corresponding frame under any action which the relevant sub conductor may transmit in any direction to the arm.
In a second alternative embodiment, each of the joints between the support and an arm comprises: two or more frames integral with or fixed to the support and prouided in planes coincident with or parallel to a p]ane containing the support; a core positioned within each frame; and a plurality of elastic elements for each frame, each of said elements having one end fixed to the corresponding frame and the other~end fixed to the corresponding core so as to retain the core elastically within the frame. The elastic elements for each frame are symmetrically spaced around the periphery of the core. An arm which has at one end thereof a clamp for clamping a sub-conductor is fixedly mounted to the core at its opposite end, said arm being permitted to move elastically within the corresponding frame under any actior which the relevant sub~conductor may transmit in any direction to the arm.
The elastic elements provided may be of elastomeric elements or steel springs, both of them being adapted to be compressed, extended, bent and twist under act-ons transmitted fro 1 the sub-conductors through the arms. The elastomeric elements are secured to the core and the frame (or to plates fastened to the frame~ by adhesive bonding or by mechanical fastening means, such as, for example, by the use of flange extensions at the ends of th elastic elements, conveniently engaged in corresponding recesses in the core and in the frame. Similarly, steel springs are secure to the core and to the frame by known mechanical fastening means or by welding. The principle advantages of the device of the su~j ct invention reside in the fact that the arms are permitted to move in any direction and in any plane, without being engaged with fixed rotation centers; that the elastic characteristic of the joint is variable even for small transmitted movements; that the elastic elements are not subject to overheating; that the damping effect is satisfactorily constant under ambient temperature variations; that the joint reacts to the twisting movements of the arm with a remarkably low couple, so that bending of the sub-conductors is prevented in correspondence with the clamps when movements of the sub-conductors rise that twist the arms; and thatthe elastic elements are working without sliding on any surfac of the device so that there is no friction between said parts.
The novel features which are considered as characteristic of the invention are set forth, in particular, in the appended claims. The improved apparatus itself, however, both as to its construction and its mode of operation r together with additional features and advantages thereof, will be best understood upon a review of the following detailed description of certain specific embodiments with reference to the accompanying drawing.
_ ~ _ FIG. 1 is an assembly view of a spacer-damper device for use with a twin conductor which includes joints at opposite ends thereof;
FIG. 2 is a somewhat enlarged cutaway front elevational view of one of the joints of the spacer-damper device shown in FIG. l;
FIG. 3 is a cross-sectional view taken along line X-X of FIG. 2;
FIG. 4 iS a front elevational view of a joint of the spacer-damper device as shown in FIG. 1 constituting an alternativ~
embodiment of the elastic elements therein;
FIG. 5 is a partial sectional assembly view of a portion of the spacer-damper device as used in association with a twin conductor in accordance with the first alternative embodiment; and FIG. 6 is a partial sectional assémbly view of a portion of the spacer-damper device as used in association with a twin conductor in accordance with a second alternative embodiment.
_~_ DESCRIPTION OF THE PREFERRED E~BOOIVENTS
In FIG. 1, a support 1 is provided which includes at each end thereof a joint 2 for an articulating arm 3. Arm 3 includes at its end opposite the joint 2 a clamp 4 which is adapted to r clamp a sub-conductor (not shown).
The joint 2 provided at either end of the support 1 is shown in greater detail in FIGS. 2 and 3 and includes a generally rectangularly shaped frame 5; a core 6 having rectangular cross-section positioned within the frame 5; and a plurality (preferably four) of elastic elements 7 in the form of concave cylinders made of an elastomeric material each of which is adhesively bonded at one end to the core 6 and adhesively bonded at the other end to a plate 8 which is friction fit in a slot 8A provided in the inner portion of frame 5. One end 3A of the arm 3 (the other end not being shown) is rigidly fixed to the core 6 by means of two rivets 9, each passing through apertures in the core 6. The periphery of the core 6 is proximately spaced from the inner perimeter of the frame 5 so as to permit the core 6 to freely twist in the plan~
of the figure as well as in planes perpendicular to the figure.
Support 1, frames 5, cores 6, plates 8 and arms 3 are all preferably fabricated from an aluminum alloy.
As shown in FIG. 3, the core 6 extends out of both the sides of the frame 5 in order to permit the arm 3 as well as the core 6 to freely twist in the plane of the figure.
~n alternative embodiment of the device of FIGS. 1 3 is shown FIG. 4 wherein a joint 2 instead of elastic elements of _g _ 23~39 1 a plurality of, preferably slx, elas~ic elements 10 made as steel spiral springs, which are conveniently fixed to plates 8 friction fit in slots 8A provided in the inner part of the frame 5 and to the core 6, elastic elements 10 being symmetrically spaced around the core 6.
FIG. 5 illustrated a joint 2 provided between the support 1 and an arm 3, the joint 2 including two frames 5, each of which being located in a plane perpendicular with the plane of support 1.
The arm 3 is fixed at its end to a core 6 provided within a frame 5 and elastically held therein by a plurality of elastic elements 7 in the manner hereinabove described. One of the frames 5 is depicted in section,while the other frame 5 is illustrated in elevational view.
In FIG. 6, a joint 2 is positioned between the support 1 and an arm 3, the joint 2 comprising two frames 5, both of which are provided in a plane containing the support 1. The arm 3 forks at its ends in two branches, each of which is resiliently secured to a core 6 held in a relevant frame 5 by means of elastic element 7 in the mannex hereinabove described.
It will be appreciated that frames 5 of the joint 2 may b of virtual any shape, i.e., circular, oval, polygonal, in order to acco~te any particular useful function.
Similarly, support 1 may be of different shapes, each shape being suitable to the quantity of ~rms 3 that the support bears, depending on whether the conductor of the relevant electric line is a bundle made of two, three, four or more sub-conductors.
-lU-I Without further an~;ysls, the foreg~ing will co fully reveal the gist of the present invention that others can, by applying current knowledge, readily adapt it for various applications without omitting features that, from the standpoint of prior art, fairly constitute essential characteristics of the generic and specific aspects of my contribution to the art, and therefore, such adaptations should and are comprehended with the meaning and range of equivalence of the claims.
The present invention relates to a spacer-damper for bundled conductors of electric lines and, more partic~llarly, to such a device which is capable of substantiall~ damping the mov~ments of the individual sub-conductors from aeolian vibrations In bundled con~uctors of high and very high tension electric lines i.e.~ conductors composed of two or more sub-conductors ~or each electric phase, it is necessary to keep the correct mutual spacing of the sub-conductors along each span between adjacent towers as well as along the entire length of an electric line. It is further necessary to substantially damp the movements of the individual sub-conductors from aeolian vibrations, i.e., high frequency and small amplitude vibrations caused by weak winds as well as violent and large amplitude oscillations caused by strong winds.
Spacer-dampers are devices which are mounted on the electric lines in order to meet both of the above requirements.
Single joint spacer-dampers are disclosed, for example, in Italian Patent No. 936.310 owned by S.A.S. Officine Meccaniche Innocente Riganti di Innocente e Franco Riganti & C. of Solbiate Arno, Italy Multiple joint spacer-dampers are presently manufactured by DAMP
of Sovere, Italy and SALVI A. & C. of Milano, Italy.
The principle disadvantage of a single joint spacer-dampe such as the one-described,for example,in Italian Patent No. 936.31 is that, due to its reliance on a single joint, each arm is permitted to move only in an angular direction. Since angular oscilla~ions are centered in the joint center, there is no .q~
1 possibility of movement in the direction of the arm axis. The main disadvantayes of the multiple spacer-dampers of the two other cited manufacturers reside in the fact that while they are permitted to move in a number of directions, movement is restrict only in the plane perpendicular to the longitudinal axis of the sub-condutorsO Moreover, in all of these cLevices, the rigidity of the joint is nearly constant under aeolian vibrations and, as such, the damping effect depends only on the hysteresis of the elastic means comprised in the ~oints with almost all of the dissipated energy being transformed in heat which damages the elastic means. Furthermore, as in almost all these devices the elastomeric elastic means becomes compressed; A further disadvantage associated with such devices is that their performanc varies widely depending upon the external temperature at the time.
Finally, the prestresses of the elastic means result in the joints being extremely rigid and, conse~uently, such devices are not sensitive to small, exciting forces.
;P~.38~
OBJECTS AND SUMMARY OF THE_I~VENTION
An object bf the present invention is to provide a damping device which may be used in association with bundled conductors of high tension and very high tension electric lines.
It is another object of the present invention to provide such a damping device which substantially damps the movement of the individual sub-conductors from aeolian ~ibrations.
It is yet another object of the present invention to provide such a damping device which is capable of damping high frequency and small amplitude vibrations caused by weak winds and violent and large amplitude oscillations caused by strong winds.
The present invention, in brief summary, comprises a device for spacing apart and damping bundled conductors in an electric line. The device comprises a support, a plurality of arms each adapted to clamp about and hold at least one sub-conductor in the bundle of conductors and at least one flexible joint provided on said support and adapted to flexibly secure said arm to said support. The joint includes at least one frame integral with and secured to said support and located in a plane relative to the plane of the support, a core positioned within said at least one frame to which said at least one arm is attached, and at least one elastic element provided between the core and the at least one frame for retaining the core elastically within the frame. The frame may be located in the plane of the support or i an inclined plane relative to the plane of the support. Additionall 12~?~.3~l9 l two or more frames may be provided, each located in a plane coincident with or parallel to the plane of the support. The elastic elements may be fabricated from elastomeric materials or they may be steel springs.
The spacer-damper device, according to the present invention, comprises a support on which a plurality of arms are provided for holding sub-conductors. The arms which are articulated on the support, are provided in a number equal to the number of sub-conductors in the relevant bundle of conductors. A
joint is provided between the support and an arm which includes a clamp for securing same to the sub-conductors. The joint includes a frame integral with or fixed to the support and positioned in a plane containing the support; a core positioned within the frame ;
and a plurality of elastic elements each having one end fixed to the frame and the other end fixed to the core for keeping the core itself elastically within the frame. The elastic elements are symmetrically spaced around the periphery of the core. An arm having at one end thereof a clamp for clamping a sub-conductor is fixed at the other end to the core in such a manner that can move elastically within the frame under any action which the relevant sub-conductor can transmit in any direction to the arm.
In a first embodiment, each joint provided between the support and the arm includes one or more frames integral with or fixed to the support and provided in a p?ane which is inclined relative to the support; a core positioned within each frame; and a plurality of elastic elements each having one end fixed to the ,, ` 1~ 3~9 _ 1 corresponding core for keeping the core itself elastically within the frame. The elastic elements for each frame are symmetrically spaced around the periphery of the core. An arm which has at one end thereof a clamp for clamping a sub-conductor is fixedly mount to the core at its opposite end, said arm being permitted to move elastically within the corresponding frame under any action which the relevant sub conductor may transmit in any direction to the arm.
In a second alternative embodiment, each of the joints between the support and an arm comprises: two or more frames integral with or fixed to the support and prouided in planes coincident with or parallel to a p]ane containing the support; a core positioned within each frame; and a plurality of elastic elements for each frame, each of said elements having one end fixed to the corresponding frame and the other~end fixed to the corresponding core so as to retain the core elastically within the frame. The elastic elements for each frame are symmetrically spaced around the periphery of the core. An arm which has at one end thereof a clamp for clamping a sub-conductor is fixedly mounted to the core at its opposite end, said arm being permitted to move elastically within the corresponding frame under any actior which the relevant sub~conductor may transmit in any direction to the arm.
The elastic elements provided may be of elastomeric elements or steel springs, both of them being adapted to be compressed, extended, bent and twist under act-ons transmitted fro 1 the sub-conductors through the arms. The elastomeric elements are secured to the core and the frame (or to plates fastened to the frame~ by adhesive bonding or by mechanical fastening means, such as, for example, by the use of flange extensions at the ends of th elastic elements, conveniently engaged in corresponding recesses in the core and in the frame. Similarly, steel springs are secure to the core and to the frame by known mechanical fastening means or by welding. The principle advantages of the device of the su~j ct invention reside in the fact that the arms are permitted to move in any direction and in any plane, without being engaged with fixed rotation centers; that the elastic characteristic of the joint is variable even for small transmitted movements; that the elastic elements are not subject to overheating; that the damping effect is satisfactorily constant under ambient temperature variations; that the joint reacts to the twisting movements of the arm with a remarkably low couple, so that bending of the sub-conductors is prevented in correspondence with the clamps when movements of the sub-conductors rise that twist the arms; and thatthe elastic elements are working without sliding on any surfac of the device so that there is no friction between said parts.
The novel features which are considered as characteristic of the invention are set forth, in particular, in the appended claims. The improved apparatus itself, however, both as to its construction and its mode of operation r together with additional features and advantages thereof, will be best understood upon a review of the following detailed description of certain specific embodiments with reference to the accompanying drawing.
_ ~ _ FIG. 1 is an assembly view of a spacer-damper device for use with a twin conductor which includes joints at opposite ends thereof;
FIG. 2 is a somewhat enlarged cutaway front elevational view of one of the joints of the spacer-damper device shown in FIG. l;
FIG. 3 is a cross-sectional view taken along line X-X of FIG. 2;
FIG. 4 iS a front elevational view of a joint of the spacer-damper device as shown in FIG. 1 constituting an alternativ~
embodiment of the elastic elements therein;
FIG. 5 is a partial sectional assembly view of a portion of the spacer-damper device as used in association with a twin conductor in accordance with the first alternative embodiment; and FIG. 6 is a partial sectional assémbly view of a portion of the spacer-damper device as used in association with a twin conductor in accordance with a second alternative embodiment.
_~_ DESCRIPTION OF THE PREFERRED E~BOOIVENTS
In FIG. 1, a support 1 is provided which includes at each end thereof a joint 2 for an articulating arm 3. Arm 3 includes at its end opposite the joint 2 a clamp 4 which is adapted to r clamp a sub-conductor (not shown).
The joint 2 provided at either end of the support 1 is shown in greater detail in FIGS. 2 and 3 and includes a generally rectangularly shaped frame 5; a core 6 having rectangular cross-section positioned within the frame 5; and a plurality (preferably four) of elastic elements 7 in the form of concave cylinders made of an elastomeric material each of which is adhesively bonded at one end to the core 6 and adhesively bonded at the other end to a plate 8 which is friction fit in a slot 8A provided in the inner portion of frame 5. One end 3A of the arm 3 (the other end not being shown) is rigidly fixed to the core 6 by means of two rivets 9, each passing through apertures in the core 6. The periphery of the core 6 is proximately spaced from the inner perimeter of the frame 5 so as to permit the core 6 to freely twist in the plan~
of the figure as well as in planes perpendicular to the figure.
Support 1, frames 5, cores 6, plates 8 and arms 3 are all preferably fabricated from an aluminum alloy.
As shown in FIG. 3, the core 6 extends out of both the sides of the frame 5 in order to permit the arm 3 as well as the core 6 to freely twist in the plane of the figure.
~n alternative embodiment of the device of FIGS. 1 3 is shown FIG. 4 wherein a joint 2 instead of elastic elements of _g _ 23~39 1 a plurality of, preferably slx, elas~ic elements 10 made as steel spiral springs, which are conveniently fixed to plates 8 friction fit in slots 8A provided in the inner part of the frame 5 and to the core 6, elastic elements 10 being symmetrically spaced around the core 6.
FIG. 5 illustrated a joint 2 provided between the support 1 and an arm 3, the joint 2 including two frames 5, each of which being located in a plane perpendicular with the plane of support 1.
The arm 3 is fixed at its end to a core 6 provided within a frame 5 and elastically held therein by a plurality of elastic elements 7 in the manner hereinabove described. One of the frames 5 is depicted in section,while the other frame 5 is illustrated in elevational view.
In FIG. 6, a joint 2 is positioned between the support 1 and an arm 3, the joint 2 comprising two frames 5, both of which are provided in a plane containing the support 1. The arm 3 forks at its ends in two branches, each of which is resiliently secured to a core 6 held in a relevant frame 5 by means of elastic element 7 in the mannex hereinabove described.
It will be appreciated that frames 5 of the joint 2 may b of virtual any shape, i.e., circular, oval, polygonal, in order to acco~te any particular useful function.
Similarly, support 1 may be of different shapes, each shape being suitable to the quantity of ~rms 3 that the support bears, depending on whether the conductor of the relevant electric line is a bundle made of two, three, four or more sub-conductors.
-lU-I Without further an~;ysls, the foreg~ing will co fully reveal the gist of the present invention that others can, by applying current knowledge, readily adapt it for various applications without omitting features that, from the standpoint of prior art, fairly constitute essential characteristics of the generic and specific aspects of my contribution to the art, and therefore, such adaptations should and are comprehended with the meaning and range of equivalence of the claims.
Claims (20)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A device for spacing apart and damping bundled conductors in an electric line, said device comprising a support, a plurality of arms each adapted to clamp about and hold at least one sub-conductor in the bundle of conductors and at least one flexible joint provided on said support and adapted to flexibly secure said arm to said support, said joint including at least one frame integral with and secured to said support and located in the plane of said support, a core positioned within said at least one frame to which said at least one arm is attached, and at least one elastic element provided between the core and the at least one frame for retaining the core elastically within the frame.
2. The device of claim 1 wherein the number of arms equals the number of sub-conductors adapted to be held by the support.
3. The device of claim 1 wherein at least one elastic element is secured at one end thereof to the core and at the opposite end thereof to the frame.
4. The device of claim 1 wherein a plurality of elastic elements are symmetrically spaced about the core.
5. The device of claim 1 wherein the elastic elements are fabricated from an elastomeric material.
6. The device of claim 1 wherein the elastic elements are steel springs.
7. The device of claim 1 wherein the arm includes at one end thereof clamping means for securing thereto the sub-conductor and wherein the arm is secured at its opposite end to the core.
8. The device of claim 7 wherein the core is permitted to move elastically within the frame in response to movement in any direction by the sub-conductor.
9. The device of claim 1 wherein each joint includes at least one frame which is located in an inclined position relative to the plane of the support.
10. The device of claim 1 wherein each joint includes at least two frames, each of said frames being located in a plane coincident with or parallel to the plane of the support.
11. A device for spacing apart and damping bundled conductors in an electric line, said device comprising a support, a plurality of arms each adapted to clamp about and hold at least one sub-conductor in the bundle of conductors and at least one flexible joint provided on said support and adapted to flexibly secure said arm to said support, said joint including at least one frame integral with and secured to said support and located in an inclined plane relative to the plane of the support, a core positioned within said at least one frame to which said at least one arm is attached, and at least one elastic element provided between the core and the at least one frame for retaining the core elastically within the frame.
12. The device of claim 11 wherein a plurality of elastic elements are provided symmetrically spaced about the core and each secured at one end thereof to the core and at the opposite end thereof to the frame.
13. The device of claim 11 wherein the elastic elements are fabricated from an elastomeric material.
14. The device of claim 11 wherein the elastic elements are steel springs.
15. The device of claim 11 wherein the arm includes at one end thereof clamping means for securing thereto the sub-conductor and is secured at its opposite end to the core and wherein the core is permitted to move elastically within the frame in response to movement of the sub-conductor in any direction.
16. A device for spacing apart and damping bundled conductors in an electric line, said device comprising a support, a plurality of arms each adapted to clamp about and hold at least one sub conductor in the bundle of conductors and at least one flexible joint provided on said support and adapted to flexibly secure said arm to said support, said joint including at least two frames integral with and secured to said support and each located in a plane coincident to or parallel with the plane of the support a core positioned within said at least one frame to which said at least one arm is attached, and at least one elastic element provided between the core and the at least one frame for retaining the core elastically within the frame.
17. The device of claim 16 wherein a plurality of elastic elements are provided symmetrically spaced about the core and each secured at one end thereof to the core and at the opposite end thereof to the frame.
18. The device of claim 16 wherein the elastic elements are fabricated from an elastomeric material.
19. The device of claim 16 wherein the elastic elements are steel springs.
20. The device of claim 16 wherein the arm includes at one end thereof clamping means for securing thereto the sub-conductor and is secured at its opposite end to the core and wherein the core is permitted to move elastically within the frame in response to movement of the sub-conductor in any direction.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT23315/82A IT1159093B (en) | 1982-09-17 | 1982-09-17 | DAMPER SPACER FOR ELECTRIC LINE BEAM CONDUCTORS |
| IT23315A/82 | 1982-09-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1202389A true CA1202389A (en) | 1986-03-25 |
Family
ID=11205988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000436678A Expired CA1202389A (en) | 1982-09-17 | 1983-09-14 | Spacer-damper for a bundled conductor for an electric line |
Country Status (18)
| Country | Link |
|---|---|
| US (1) | US4533785A (en) |
| EP (1) | EP0104514B1 (en) |
| JP (1) | JPS5970115A (en) |
| KR (1) | KR840005939A (en) |
| AT (1) | ATE59119T1 (en) |
| AU (1) | AU557852B2 (en) |
| BR (1) | BR8305049A (en) |
| CA (1) | CA1202389A (en) |
| DE (1) | DE3382059D1 (en) |
| ES (1) | ES8500676A1 (en) |
| GR (1) | GR78996B (en) |
| HU (1) | HU186836B (en) |
| IN (1) | IN157537B (en) |
| IT (1) | IT1159093B (en) |
| MX (1) | MX153909A (en) |
| NZ (1) | NZ205165A (en) |
| YU (1) | YU185783A (en) |
| ZA (1) | ZA835164B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3610885A1 (en) * | 1986-04-02 | 1987-10-15 | Bergner Richard Gmbh Co | SELF-DAMPING FIELD SPACER FOR LEADER LADDER |
| IT1222699B (en) * | 1987-09-22 | 1990-09-12 | Salvi & Co Spa A | DAMPING SPACER FOR BAND CONDUCTORS OF HIGH VOLTAGE AERIAL POWER LINES WITH OPTICAL FIBER CONDUCTOR INSIDE THE BEAM |
| CA2274402A1 (en) | 1999-06-11 | 2000-12-11 | Hydro-Quebec | Damper for an overhead cable |
| US6316724B1 (en) | 2000-04-21 | 2001-11-13 | New Line Concepts, Llc | Utility line spacer and method for manufacturing same |
| CN103337823A (en) * | 2013-07-18 | 2013-10-02 | 国家电网公司 | All-insulated damping spacer for binary division sub-conductor |
| CN105207155B (en) * | 2015-10-16 | 2017-06-20 | 国网河南省电力公司电力科学研究院 | A kind of power transmission line spacer wire clamp attachment structure without rigid collision |
| DE102020200329B4 (en) * | 2020-01-13 | 2021-10-07 | Richard Bergner Holding GmbH & Co. KG | Field spacers |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH497803A (en) * | 1969-02-22 | 1970-10-15 | Salvi & Co Spa A | Elastic spacer for bundled conductors |
| US3617609A (en) * | 1970-11-19 | 1971-11-02 | Aluminum Co Of America | Conductor vibration damping device |
| NL7208464A (en) * | 1971-09-07 | 1973-03-09 | ||
| IT962511B (en) * | 1972-08-03 | 1973-12-31 | Cantamessa L | SPACER FOR BANDS OF CONDUCTORS FOR AERIAL POWER LINES |
| GB1495384A (en) * | 1973-12-13 | 1977-12-14 | Brush Switchgear | Spacer-dampers for power transmission lines |
| GB1507301A (en) * | 1974-03-12 | 1978-04-12 | Brush Switchgear | Spacer-damper for overhead power transmission lines |
| JPS5712559Y2 (en) * | 1975-07-10 | 1982-03-12 | ||
| JPS573297A (en) * | 1980-06-06 | 1982-01-08 | Japan Electronic Control Syst Co Ltd | Inspecting method for rom built in controller |
-
1982
- 1982-09-17 IT IT23315/82A patent/IT1159093B/en active
- 1982-12-17 IN IN1459/CAL/82A patent/IN157537B/en unknown
-
1983
- 1983-07-15 ZA ZA835164A patent/ZA835164B/en unknown
- 1983-08-05 GR GR72148A patent/GR78996B/el unknown
- 1983-08-05 NZ NZ205165A patent/NZ205165A/en unknown
- 1983-08-09 AU AU17804/83A patent/AU557852B2/en not_active Ceased
- 1983-08-16 ES ES524952A patent/ES8500676A1/en not_active Expired
- 1983-08-18 HU HU832909A patent/HU186836B/en unknown
- 1983-09-06 KR KR1019830004182A patent/KR840005939A/en not_active Application Discontinuation
- 1983-09-07 DE DE8383108813T patent/DE3382059D1/en not_active Expired - Lifetime
- 1983-09-07 AT AT83108813T patent/ATE59119T1/en not_active IP Right Cessation
- 1983-09-07 EP EP83108813A patent/EP0104514B1/en not_active Expired - Lifetime
- 1983-09-08 JP JP58164258A patent/JPS5970115A/en active Granted
- 1983-09-14 YU YU01857/83A patent/YU185783A/en unknown
- 1983-09-14 CA CA000436678A patent/CA1202389A/en not_active Expired
- 1983-09-14 MX MX198707A patent/MX153909A/en unknown
- 1983-09-16 BR BR8305049A patent/BR8305049A/en unknown
- 1983-09-19 US US06/533,536 patent/US4533785A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| HU186836B (en) | 1985-09-30 |
| DE3382059D1 (en) | 1991-01-24 |
| EP0104514B1 (en) | 1990-12-12 |
| MX153909A (en) | 1987-02-18 |
| YU185783A (en) | 1986-02-28 |
| JPS5970115A (en) | 1984-04-20 |
| AU557852B2 (en) | 1987-01-08 |
| JPH0410290B2 (en) | 1992-02-24 |
| KR840005939A (en) | 1984-11-19 |
| ZA835164B (en) | 1984-04-25 |
| IT8223315A0 (en) | 1982-09-17 |
| ATE59119T1 (en) | 1990-12-15 |
| ES524952A0 (en) | 1984-11-01 |
| BR8305049A (en) | 1984-05-08 |
| ES8500676A1 (en) | 1984-11-01 |
| IN157537B (en) | 1986-04-19 |
| GR78996B (en) | 1984-10-02 |
| US4533785A (en) | 1985-08-06 |
| NZ205165A (en) | 1987-05-29 |
| IT1159093B (en) | 1987-02-25 |
| EP0104514A3 (en) | 1987-03-25 |
| AU1780483A (en) | 1984-03-22 |
| EP0104514A2 (en) | 1984-04-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |