CN103670304A - Drill rod clamping device of power head type drilling machine - Google Patents
Drill rod clamping device of power head type drilling machine Download PDFInfo
- Publication number
- CN103670304A CN103670304A CN201310747251.1A CN201310747251A CN103670304A CN 103670304 A CN103670304 A CN 103670304A CN 201310747251 A CN201310747251 A CN 201310747251A CN 103670304 A CN103670304 A CN 103670304A
- Authority
- CN
- China
- Prior art keywords
- clamping
- slip spider
- clamping device
- power head
- cylinder body
- 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.)
- Pending
Links
- 238000005553 drilling Methods 0.000 title abstract description 12
- 241000239290 Araneae Species 0.000 claims description 47
- 238000012423 maintenance Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 13
- 230000033001 locomotion Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/10—Slips; Spiders ; Catching devices
Abstract
The invention discloses a drill rod clamping device of a power head type drilling machine. The drill rod clamping device of the power head type drilling machine comprises a base, a left clamping device and a right clamping device. The left clamping device comprises a left slip seat (6), a clamping oil cylinder and an elastic clamping device. The clamping oil cylinder comprises a clamping cylinder body (2) and a clamping piston (3). The elastic clamping device comprises an elastic element (4). A left slip (7) is arranged on the left slip seat, one end of the elastic element (4) abuts against a left end cover, and the other end of the elastic element (4) abuts against the left slip seat. A right clamping body comprises a loosening cylinder body (11), a loosening piston (10) and an ejector rod (17). Through holes are formed in the middle of a right slip seat and the middle of a right slip, and the ejector rod (17) is arranged in the through holes. The left end cover (1) and the left slip seat (6) are connected with a right end cover (12) and a right slip seat (9) through guiding rods (19) and locked with the right end cover (12) and the right slip seat (9). A guide rail (15) is arranged on the base (14), and an aligning limiting block (16) is arranged in the middle of the guide rail. A left limiting block (13) and a right limiting block (18) are arranged at the two ends of the guide rail. The clamping device does not simply depend on self-deformation of a spring to perform clamping and can automatically perform positioning and aligning, the structure is simple, and maintenance is convenient.
Description
Technical field
The present invention relates to a kind of clamper, be specifically related to a kind of hydraulic gripper technical field that can be used for all-hydraulic power head churn.
Background technology
All-hydraulic power head churn is all provided with clamper conventionally, and clamper is one of design key of all-hydraulic power head formula clip mechanism.Conventional is normally closed type hydraulic gripper at present, as, mainly comprise and can do in opposite directions and the left clamping device of reverse motions and the left and right slips of right clamping device and cooperation thereof, in the clamping device of left and right, thrust unit is set, as the thrust unit of a side clamping device adopts unidirectional oil cylinder, the thrust unit of opposite side clamping device adopts spring, one side cylinder clamps drilling rod and drives the elastic force of the spring " compressed " of opposite side to clamp drilling rod simultaneously, relies on another the unidirectional oil cylinder that is arranged in spring one side to realize unclamp operation simultaneously.
Above-mentioned prior art exists defect as follows:
(1) clamper relies on spring self deformation to reach clamping object, and spring certainly exists fatigue strength, and spring-compressed stretching, extension frequency is larger, and its life-span is just shorter, and this just needs the regular dismounting and change of staff.If use unidirectional oil cylinder to unclamp, while only depending on the clamper of spring clamp, the size of its chucking power often depends on the tension force of spring, need larger specification or more spring, simultaneously, the increase of spring tension must cause again oil cylinder unilateral thrust to increase, to overcome spring force, opens clamp port, and this causes again the increase of clamper overall volume and the reduction of hydraulic switch efficiency.
(2) spring use meeting is for a long time tired and cause tension force to reduce, and the one-way oil cylinder pressure of the side of exerting pressure of offside is still constant, can cause the skew in the clamping axle center of clamping device, finally cause drilling rod axial line not overlap with the axis of clamping through hole, occur drilling rod bending and the phenomenon that fractures.
Summary of the invention
The problem existing for above-mentioned prior art, object of the present invention provides a kind of and does not rely on merely spring self-deformation to clamp, can automatically locate and the clamper of aligning.
The present invention is achieved in that a kind of drill pipe clamp of power head type drill rig, comprises base, left clamping device and right clamping device, and described left clamping device comprises left slip spider, clamping cylinder and elastic clamp device; Described clamping cylinder comprise clamp cylinder body, be arranged in described clamping cylinder body and with the clamping piston being connected with left slip spider; Described elastic clamp device comprises and is enclosed within the external flexible member of clamping cylinder; The tail end of described clamping cylinder body is connected on left end cap, and described clamping piston right-hand member is connected with left slip spider, and described left slip spider is provided with left slips, and one end of described flexible member is against on left end cap, and the other end withstands on left slip spider; Described right clamping device comprise unclamp cylinder body, unclamp piston, push rod and bracing frame, described in unclamp cylinder body and right end cap is connected, described in unclamp piston bush and be located at and unclamp outside cylinder body; Support frame as described above is arranged on right end cap, is provided with right slip spider on support frame as described above, on described right slip spider, is provided with right slips, and described right slip spider and right slips middle part are provided with through hole, in described through hole, are provided with push rod;
Described left end cap, left slip spider and right end cap, right slip spider are connected by guide peg and lock;
On described base, be provided with guide rail, in the centre of guide rail, be provided with aligning limited block, two ends are provided with left limit piece, right limit piece.
Further, described left slip spider and right slip spider bottom have guide part, in described guide part, are provided with chute.
Further, to exceed the length on right slips surface be that the guide part of described left slip spider slides into the distance between described left limit piece from aligning limited block to described push rod.
Further, oil-in I is arranged on the left end cap of described left cramping body, and communicates with left clamping pressurizing cylinder; Oil-in II is arranged on right end cap, and with unclamp cylinder body and communicate.
Further, described flexible member outside is provided with sleeve.
Further, the position of described aligning limited block meets: make the Clamping Center of the left slips after limited be positioned at the Clamping Center of described drill pipe clamp.
Further, described in unclamp piston the rounded portions of end surface shape in the middle of comprising and the extension being extended to both sides by rounded portions, described extension withstands on the bottom surface of described fore-set.
The invention has the beneficial effects as follows: do not rely on merely spring self-deformation to clamp, can supercharging clamp, can automatically locate and aligning, improved operating efficiency simultaneously.
Accompanying drawing explanation
Fig. 1 is the main sectional view of the clamper of the embodiment of the present invention.
Fig. 2 is the A-A sectional view of clamper Fig. 1 of the embodiment of the present invention.
Fig. 3 is the B-B sectional view of clamper Fig. 1 of the embodiment of the present invention.
Fig. 4 is the C-C sectional view of clamper Fig. 1 of the embodiment of the present invention.
Reference numeral in above-mentioned figure:
1 left end cap, 2 clamp cylinder body 3 clamping pistons, 4 flexible members, 5 sleeves, 6 left slip spiders, 7 left slips, 8 right slips, 9 right slip spiders, 10 unclamp piston, and 11 unclamp cylinder body, 12 right end caps, 13 left limit pieces, 14 bases, 15 guide rails, 16 aligning limited blocks, 17 fore-sets, 18 right limit pieces, 19 leads
The specific embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are elaborated, but be not used for limiting the scope of the invention.
As Figure 1-3, the hydraulic gripper of the present embodiment, comprises base 14, left clamping device and right clamping device and guide peg 19.Described left clamping device comprises left slip spider 6 and clamping cylinder and elastic clamp device.Left slips 7 is connected with left slip spider 6; Described clamping cylinder comprises the left end cap 1 that clamps cylinder body 2, is arranged on the clamping piston 3 in clamping cylinder body 2 and is connected with clamping cylinder body 2.Elastic clamp device comprises the flexible member 4 that is sleeved on clamping cylinder body 2 peripheries, and the two ends of flexible member 4 are connected with left slip spider 6 with left end cap 1 respectively, the preferred dish spring of described flexible member, the outer sleeve 5 that is provided with of described flexible member 4.
Right clamping device comprises right slip spider 9 and unclamps oil cylinder.Right slips 8 is fixedly connected with right slip spider 9.The described oil cylinder that unclamps comprises and unclamps cylinder body 11 and unclamp piston 10, the described cylinder body 11 that unclamps is connected with right end cap 12, between right end cap and right slip spider 9, be provided with bracing frame, described in unclamp piston 10 and be arranged on and unclamp outside cylinder body 12, can in the space of bracing frame, move forward and backward.
Described left clamping device and right clamping device lead with guide peg 19 by four, described guide peg 19 one end are outstanding flange, pilot hole by this guide peg 19 through right end cap and right slip spider, pilot hole through left slips, left slip spider and left end cap, with fastening nut, tighten, with locking nut, lock.
At base 14 upper mounting rails 15, the soffit of described left slip spider 6, right slip spider 9 is provided with guide groove, and described guide groove slides on guide rail.On guide rail, be provided with left limit piece 13, right limit piece 18 and make the Clamping Center of the left slips 7 after limited be positioned at the aligning limited block 16 of the Clamping Center of clamper.
Fig. 4 illustrates the shape of the end face that unclamps piston 10, and it comprises middle rounded portions and the extension being extended to both sides by rounded portions, and described extension withstands on the bottom surface of fore-set 17.
The clamper of the present embodiment is compared with existing clamper, and structure is simpler, and holding function does not weaken.The course of work of the hydraulic gripper of the present embodiment is as follows:
The hydraulic gripper of the present embodiment makes clamper keep normally closed by elastic clamp device is set, and flexible member 4 left ends unclamp cylinder body 11, right slip spider 9 to left movement by compressing left end cap and driving; Flexible member right-hand member, by compressing left slip spider 6, clamps drilling rod thereby drive left slip spider 6 and left slips 7 to move right, and now, oil pressure unclamps, when not working, in clamping drilling tool state;
Main workpiece is clamping cylinder and unclamp oil cylinder, and clamping cylinder one side connects one group of dish spring;
When supercharging clamps, in clamping cylinder 2, enter hydraulic oil, under the effect of hydraulic coupling, promoting clamping piston 3 and left slip spider 6 moves to right, left slip spider 6 arrives aligning limited block 16 and is obstructed, and now left slips 7 is just tangent with the external circle of drilling rod, and the Clamping Center of left slips is positioned at the clamping center line of clamper.Oil cylinder works on, and now clamping piston 3 is slack, and the clamping cylinder body of clamping cylinder 2 drives left cylinder cap 1, guide peg 19 to left movement, and guide peg 19 drives right end caps 12, unclamp cylinder body 11 moves to left, thereby realize supercharging, clamps.
While unclamping drilling rod, to unclamping in oil cylinder 11, enter hydraulic oil, under the effect of hydraulic coupling, unclamp piston 10 and move to left, promote push rod 17, push rod 17 overcomes the elastic force of flexible member 4 and the return pressure of clamping cylinder 2, promotes left slip spider 6 and moves to left, when left slip spider 6 arrives left limit piece 13, oil cylinder works on, now unclamp piston 10 slack, the cylinder body 11 that unclamps that unclamps oil cylinder drives right cylinder cap 12 and right slip spider 9 to move to right, and unclamps drilling rod.
The length that described push rod 17 exceeds right slips 8 surfaces is that the guide part of described left slip spider 6 slides into the distance between described left limit piece 13 from aligning limited block 16.
The automatic aligning of clamper and automatically reseting when technique scheme can realize rig holding drill pipe, and can realize supercharging and clamp.
Claims (7)
1. a drill pipe clamp for power head type drill rig, comprises base (14), left clamping device and right clamping device, it is characterized in that,
Described left clamping device comprises left slip spider (6), clamping cylinder and elastic clamp device; Described clamping cylinder comprises clamping cylinder body (2), is arranged in described clamping cylinder body and the clamping piston (3) being connected with left slip spider; Described elastic clamp device comprises and is enclosed within the external flexible member of clamping cylinder (4); It is upper that the tail end of described clamping cylinder body is connected in left end cap (1), and described clamping piston right-hand member is connected with left slip spider, and described left slip spider is provided with left slips (7), and one end of described flexible member (4) is against on left end cap, and the other end withstands on left slip spider;
Described right clamping device comprises and unclamps cylinder body (11), unclamps piston (10), push rod (17) and bracing frame, described in unclamp cylinder body and right end cap (12) is connected, described in unclamp piston (10) and be set in and unclamp outside cylinder body; Support frame as described above is arranged on right end cap, is provided with right slip spider (9) on support frame as described above, is provided with right slips (8) on described right slip spider, and described right slip spider and right slips middle part are provided with through hole, are provided with push rod (17) in described through hole;
Described left end cap (1), left slip spider (6) and right end cap (12), right slip spider (9) are connected and are locked by guide peg (19);
On described base (14), be provided with guide rail (15), be provided with aligning limited block (16) in the centre of guide rail, two ends are provided with left limit piece (13), right limit piece (18).
2. an a kind of drill pipe clamp of power head type drill rig as claimed in claim 1, is characterized in that, described left slip spider (6) and right slip spider (9) bottom have guide part, in described guide part, are provided with chute.
3. an a kind of drill pipe clamp of power head type drill rig as claimed in claim 1, it is characterized in that, the length that described push rod (17) exceeds right slips (8) surface is that the guide part of described left slip spider (6) slides into the distance between described left limit piece (13) from aligning limited block (16).
4. an a kind of drill pipe clamp of power head type drill rig as claimed in claim 1, is characterized in that, it is upper that oil-in I is arranged on the left end cap (1) of described left cramping body, and communicate with left clamping pressurizing cylinder; It is upper that oil-in II is arranged on right end cap (12), and with unclamp cylinder body (11) and communicate.
5. an a kind of drill pipe clamp of power head type drill rig as described in one of claim 1-4, is characterized in that, described flexible member (4) outside is provided with sleeve (5).
6. an a kind of drill pipe clamp of power head type drill rig as claimed in claim 5, is characterized in that, the position of described aligning limited block (16) meets: make the Clamping Center of the left slips (7) after limited be positioned at the Clamping Center of described drill pipe clamp.
7. the drill pipe clamp of an a kind of power head type drill rig as described in one of claim 1-6, it is characterized in that, rounded portions in the middle of described end surface shape of unclamping piston (10) comprises and the extension being extended to both sides by rounded portions, described extension withstands on the bottom surface of described fore-set (17).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310747251.1A CN103670304A (en) | 2013-12-30 | 2013-12-30 | Drill rod clamping device of power head type drilling machine |
| PCT/CN2014/000528 WO2015100687A1 (en) | 2013-12-30 | 2014-05-26 | Drill rod clamp for power head drilling rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310747251.1A CN103670304A (en) | 2013-12-30 | 2013-12-30 | Drill rod clamping device of power head type drilling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103670304A true CN103670304A (en) | 2014-03-26 |
Family
ID=50308994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310747251.1A Pending CN103670304A (en) | 2013-12-30 | 2013-12-30 | Drill rod clamping device of power head type drilling machine |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103670304A (en) |
| WO (1) | WO2015100687A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015100687A1 (en) * | 2013-12-30 | 2015-07-09 | 恒天九五重工有限公司 | Drill rod clamp for power head drilling rig |
| CN104929541A (en) * | 2015-05-26 | 2015-09-23 | 成都高普石油工程技术有限公司 | Limiting mechanism for demounting drill pipes |
| CN105221086A (en) * | 2015-11-17 | 2016-01-06 | 恒天九五重工有限公司 | A kind of drill rod grip device |
| CN105317386A (en) * | 2014-06-25 | 2016-02-10 | 上海金泰工程机械有限公司 | Single-oil-cylinder automatic-resetting drill rod holder |
| CN108869575A (en) * | 2018-07-04 | 2018-11-23 | 燕山大学 | Normally closed type dynamic balance locker |
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| CN108104738B (en) * | 2018-02-05 | 2023-08-11 | 湖南科技大学 | Drill rod centering device of submarine drilling machine |
| CN108266136B (en) * | 2018-03-27 | 2023-07-25 | 西南石油大学 | Hydraulic internal clamping type oil sleeve clamp |
| CN115977557B (en) * | 2023-03-22 | 2023-05-16 | 四川圣诺油气工程技术服务有限公司 | Oil pipe lifting control device for operation under pressure |
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| NO306873B1 (en) * | 1998-04-08 | 2000-01-03 | Eng & Drilling Machinery As | Rotary Tables |
| RU2151262C1 (en) * | 1998-07-23 | 2000-06-20 | Нефтегазодобывающее управление "Альметьевнефть" | Clamp for suspension of sucker-rod string |
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| CN201262051Y (en) * | 2008-09-28 | 2009-06-24 | 煤炭科学研究总院重庆研究院 | Compound hydraulic clamper |
| CN101775965B (en) * | 2010-02-09 | 2012-06-27 | 煤炭科学研究总院西安研究院 | Open-top composite clamp holder |
| CN202483480U (en) * | 2012-03-30 | 2012-10-10 | 中煤科工集团重庆研究院 | Hydraulic clamping device |
| CN103670304A (en) * | 2013-12-30 | 2014-03-26 | 恒天九五重工有限公司 | Drill rod clamping device of power head type drilling machine |
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2013
- 2013-12-30 CN CN201310747251.1A patent/CN103670304A/en active Pending
-
2014
- 2014-05-26 WO PCT/CN2014/000528 patent/WO2015100687A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5706894A (en) * | 1996-06-20 | 1998-01-13 | Frank's International, Inc. | Automatic self energizing stop collar |
| CN101363310A (en) * | 2008-09-28 | 2009-02-11 | 煤炭科学研究总院重庆研究院 | Linkage hydraulic clamper for mining fully hydraulic rig |
| CN201786282U (en) * | 2010-09-27 | 2011-04-06 | 江苏中煤矿山设备有限公司 | Drill-rod hydraulic clamper for coal mine |
| CN102606089A (en) * | 2012-03-30 | 2012-07-25 | 中煤科工集团重庆研究院 | Hydraulic clamp holder |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015100687A1 (en) * | 2013-12-30 | 2015-07-09 | 恒天九五重工有限公司 | Drill rod clamp for power head drilling rig |
| CN105317386A (en) * | 2014-06-25 | 2016-02-10 | 上海金泰工程机械有限公司 | Single-oil-cylinder automatic-resetting drill rod holder |
| CN104929541A (en) * | 2015-05-26 | 2015-09-23 | 成都高普石油工程技术有限公司 | Limiting mechanism for demounting drill pipes |
| CN105221086A (en) * | 2015-11-17 | 2016-01-06 | 恒天九五重工有限公司 | A kind of drill rod grip device |
| CN108869575A (en) * | 2018-07-04 | 2018-11-23 | 燕山大学 | Normally closed type dynamic balance locker |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015100687A1 (en) | 2015-07-09 |
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Application publication date: 20140326 |