CN104790884A - Normally-closed strip-shaped slip chuck for small cylinder spring set - Google Patents
Normally-closed strip-shaped slip chuck for small cylinder spring set Download PDFInfo
- Publication number
- CN104790884A CN104790884A CN201510076460.7A CN201510076460A CN104790884A CN 104790884 A CN104790884 A CN 104790884A CN 201510076460 A CN201510076460 A CN 201510076460A CN 104790884 A CN104790884 A CN 104790884A
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- Prior art keywords
- slips
- chuck
- group
- spring
- slip
- Prior art date
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- Granted
Links
- 239000000428 dust Substances 0.000 claims abstract description 11
- 238000005553 drilling Methods 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000003921 oil Substances 0.000 claims description 41
- 241000239290 Araneae Species 0.000 claims description 36
- 210000004907 gland Anatomy 0.000 claims description 20
- 239000010720 hydraulic oil Substances 0.000 claims description 8
- 230000000903 blocking effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a normally-closed strip-shaped slip chuck for a small cylinder spring set. The normally-closes strip-shaped slip chuck for the small cylinder spring set comprises a fixed nit assembly, a slip rotating unit assembly, a fixedly-rotary separating unit assembly and a drilling rod water dust blocking unit assembly. The slip rotating unit assembly comprises a slip set, a slip seat and a spring seat. External annular combining spring sets and internal annular spring sets are evenly distributed in annular cylindrical holes formed by matching of the slip seat and the spring seat, and original clamping force of the slip set is provided. A hydraulic chuck which is small in structural size, high in capability and rapid in opening is provided, pressure oil with relatively-high pressure is needed to be provided for a hydraulic system in the working process of the hydraulic chuck is solved, and the problem that the installing operation is not convenient during slip replacing due to the fact that the elastic component characteristic cannot meet the using requirement of the chuck with the big capacity is solved.
Description
Technical field
The present invention relates to a kind of mechanical clamping device, especially a kind of small column groups of springs normally closed type strip slips chuck.
Background technology
Chuck is the important building block of mechanical clamping device, is arranged on the end of power set, and its Main Function is clamping pipe fitting, to drilling tool transmitting torque and axial force, completes the transmission of energy.
At present, common oild chuck mainly contains oild chuck open in usual and constant-closed type hydraulic chuck, and wherein oild chuck open in usual is mainly rubber chuck, and normally closed type chuck is mainly disk spring type chuck.During the work of rubber oild chuck, utilize hydraulic clamp, spring unclamps, and therefore, wants high to the pressure requirements of hydraulic system, joins oil jacket in oil supply system, because of employing clearance seal, has certain leakage, affects the performance of chuck.Disk spring type chuck mainly contains cylinder block, piston, disk spring, slip spider, slips, hollow shaft composition, and by spring force clamping during work, hydraulic unlock, chuck performance depends on disk spring performance.
Due to the impact of disk spring self-characteristic, disk spring type chuck has the following disadvantages: one, chucking power is large by disk spring deformation effect, and after slips wearing and tearing, chucking power loss is large.Two, when slips is arranged on medium position or the end of hollow shaft, utilize the principle of inclined plane force increasing, its axial dimension installed is very large on chucking power impact.Three, chuck will be made to have large chucking power, just must adopt large-sized disk spring, cause chuck appearance and size large, dynamic moment of inertia is large.Four, thrust ball bearing is when chucking work, and because of unable effect, it becomes released state, ball gravity effect and sink, when be stressed again effect time, ball derails in short-term, occurs by force unbalance, makes its reduced lifetime.Five, slips embeds in the middle part of hollow shaft, and slips is changed very inconvenient.
Summary of the invention
The present invention will solve the shortcoming of above-mentioned prior art, a kind of small column groups of springs normally closed type strip slips chuck is provided, also the oild chuck of a kind of minor structure size, large ability, fast open form is belonged to, solve oild chuck at work, hydraulic system needs the hydraulic oil of supply elevated pressures continuously, or the instructions for use of large ability chuck can not be met because of flexible member characteristic, and when changing slips, the problem of fitting operation inconvenience.
The present invention solves the technical scheme that its technical problem adopts: this small column groups of springs normally closed type strip slips chuck, comprise fixed cell assembly, slips rotary unit assembly, admittedly revolve separative element assembly and drilling rod water dust resistance from unit block, described slips rotary unit assembly comprises slips group, slip spider and spring base, outer shroud cluster spring group and inner ring group are evenly distributed in slip spider or spring base matches with it in each cylindrical hole of garden annular formed, and provides the original grip power of slips group.
As preferably, described outer shroud cluster spring group comprises the big spring little spring contrary with rotation direction or an end cap housing screw group, its big spring and little spring one end are located in the hole of spring base, the other end withstands on the end face seam of slip spider, inner ring group comprises a spring and a slips unclamps set screws, its spring one end is located in the hole of slip spider, and the other end withstands on the end face of torsion pass hollow pin.
As preferably, described slip spider is provided with 5 ~ 9 T-shaped surface grooves at circumferencial direction, and each T-shaped surface groove, built with strip slips and wear-resistant block, is centripetally arranged in slips group.
As preferably, the two ends of described slips group are provided with slips rear ends wearing plate, and outside is provided with slips group gland, and slips group gland is fixed on spring base by end cap housing screw group.
As preferably, between slips group and slips rear ends wearing plate, be provided with the gap of 0.15-0.2mm.
As preferably, described drilling rod water dust resistance comprises water-ring and front gland from unit block, and front gland is fixed on slips group gland, and water-ring is located between front gland and slips group gland.
As preferably, spring base is fixed on main shaft, and spring base is connected with torsion pass plate by torsion pass hollow pin, and torsion pass plate is connected by torsion pass pin with main shaft.
As preferably, described fixed cell assembly comprises bearing cover, chuck oil cylinder body and oil cylinder piston, admittedly revolve separative element assembly to comprise thrust bearing and lock pad and round nut, slips unclamps set screws and is connected in slippage axle through slip spider, slippage axle is located in oil cylinder piston, oil cylinder piston is sheathed in chuck oil cylinder body, between oil cylinder piston and slippage axle, be provided with thrust bearing, and slippage axle is fixed with lock pad and round nut.
As preferably, described chuck oil cylinder body is provided with external hydraulic oil joint, between oil cylinder piston and chuck oil cylinder body, be provided with dust ring.
Inventing useful effect is: one, the present invention adopts small column groups of springs as chuck elastic element, good resiliency characteristics curve can be provided, elastic force covariant deformationization is very little, chuck chucking power is large, stable performance, replace Hydraulic Elements with mechanical part, avoid leakage of oil, reduce the requirement to hydraulic system.Two, small column groups of springs own profile size is little, is arranged on slip spider and matches with spring base and formed in cylindrical hole, and reduce chuck appearance and size, dynamic moment of inertia is little.Three, slips and wear-resistant block embed in slip spider, drive slip assemblies to move radially, effectively can transmit motion, and oblique mechanism can play reinforcement in inclined plane groove.Four, slip spider is designed with torsion pass groove, slips group is stuck between torsion pass groove, transmitting torque, only need take end cap apart when changing slips, and just replaceable slips, convenient and swift.Five, water dust resistance is arranged on chuck body end from compressible rubber, and effective anti-sealing foreign material enter chuck, extend its application life.Six, extend the application life of hydraulic unit, clamping is reliable, convenient during dismounting drilling tool, fast, improves site work efficiency.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Description of reference numerals: main shaft 1, bearing cover 2, lock pad and round nut 3, oil cylinder piston 4, thrust bearing 5, chuck oil cylinder body 6, slippage axle 7, outer shroud cluster spring group 8, torsion pass pin 9, torsion pass plate 10, torsion pass hollow pin 11, inner ring group 12, slips unclamps set screws 13, spring base 14, slip spider 15, end cap housing screw group 16, slips group 17, slips rear ends wearing plate 18, slips group gland 19, water-ring 20, front gland 21.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described:
Small column groups of springs normally closed type strip slips chuck, by fixed cell assembly, slips rotary unit assembly, admittedly revolves separative element assembly and drilling rod water dust and hinders and form from unit block four part.Have employed the principle of inclined plane force increasing, amplify the tension force of spring.
Fixed cell comprises location bearing lid 2, chuck oil cylinder body 6, oil cylinder piston 4 and cylinder seal part, generally be arranged on the end of body, the large ring-type hydraulic jack formed, unclamp slips, regulate the design parameters of large ring-type hydraulic jack, itself and hydraulic system parameters matching problem can be solved easily, effectively realize the function interlock of execution unit.
Slips rotary unit comprises main shaft 1, slippage axle 7, outer shroud cluster spring group 8, torsion pass pin 9, torsion pass plate 10, torsion pass hollow pin 11, inner ring group 12, slips unclamp set screws 13, spring base 14, slip spider 15, end cap housing screw group 16, slips group 17, slips rear ends wearing plate 18, slips group gland 19.Outer shroud cluster spring group 8 and inner ring group 12 provide jointly, form original grip power.Slip spider 15 is at circumferencial direction, and be provided with five to nine T-shape surface grooves do not waited, each T-shape surface groove is built with strip slips and wear-resistant block, centripetally be arranged in slips group, retain rod pieces, transmit power, fractional value for heavier walled fitting, large numerical value be used for book wall pipe fitting.
Admittedly revolve separative element to comprise thrust bearing 5, lock pad and round nut 3, the separately static state of chuck body and the dynamic of slips group.
The resistance of drilling rod water dust comprises water-ring 20, front gland 21 from unit, uses compressible rubber, prevents fluid from entering chuck inside, affect the movement of slips.
As shown in Figure 1, the spring one end of outer shroud cluster spring group 8 is contained in the hole of spring base 14, one end withstands on slip spider 15 end face seam, a big spring is housed in every hole, have again in the hole of half quantity and refill the contrary little spring of a rotation direction, the hole of second half quantity then fills end cap housing screw group 16; The spring one end of inner ring group 12 is contained in the hole of slip spider 15, one end withstands on the end face of torsion pass hollow pin 11, that is, in have the spring of three kinds of different models to be simultaneously arranged on each cylindrical hole that slip spider or spring base match with it is distributed in circumferentially, because the parameter of three springs is different, will form new resiliency characteristics curve after assembling, this new features curve more coincide with the performance parameter of chuck.This structural shape layout spring make use of space fully, substantially reduces the appearance and size of chuck, effectively can reduce dynamic moment of inertia, namely impulse inertia, be suitable for revolution gyration.
The slips of slips group 17 is equipped with wear-resistant block again, forms T shape, reinstalls in the inclined-plane T groove of slip spider 15, inclined-plane T groove drives slip assemblies to move radially, transmit motion, inclined-plane has boosting function, the installation shaft of this namely slips to dimensional tolerance to the far-reaching reason of chucking power.The two ends of slips group 17 withstand on slips rear ends wearing plate 18, again with utilizing the screw of end cap housing screw group 16 to kill on spring base 14 by slips group gland 19, should ensure that slips can move radially simultaneously, the gap of 0.15-0.2mm between ordinary circumstance slips group and slips rear ends wearing plate, should be left.See thus, this part forms one section of virtual axle, and just because of this, the inclined plane force increasing of this chuck is not subject to the impact of installation shaft to dimensional tolerance of slips.And the transmission of moment of torsion is completed by torsion pass pin 9, torsion pass plate 10, torsion pass hollow pin 11, slip spider 15 and slips group 17.
This chuck, when changing slips, only need be pulled down the screw of end cap housing screw group 16, take off slips group gland 19, just slips group 17 can be taken out from slip spider 15 easily, reach the object of convenient and swift replacing slips.
Slips unclamps set screws 13 and is connected in slippage axle 7 through slip spider 15, torsion pass hollow pin 11, spring base 14, namely slips unclamps screw one end connection slippage axle 7 of set screws 13, one end is pressed on slip spider 15, centre have passed torsion pass hollow pin 11, have passed through spring base 14, slippage axle 7, both slip spiders 15 are connected as a single entity.Also outer shroud cluster spring group 8 and inner ring group 12 are compressed, the origin of force of spring acts on spring base 14 and slip spider 15 and on slip spider 15 and torsion pass hollow pin 11 respectively simultaneously.
Spring base 14 screw thread is screwed on main shaft 1, and torsion pass plate 10 is connected with main shaft 1 torsion pass pin 9, is also connected with spring base 14 torsion pass hollow pin 11, such main shaft 1 just becomes to be integrated with spring base 14, get final product transmitting torque, can pulling force be born again, or spring force put forth effort body.
Slippage axle 7 is contained in oil cylinder piston 4, oil cylinder piston 4 is sleeved on again in chuck oil cylinder body 6, thrust bearing 5 is housed between oil cylinder piston 4 and slippage axle 7, slippage axle 7 is screwed with lock pad and round nut 3, nut screwing clamping, locking with lock pad, make oil cylinder piston 4 and rotatable slippage axle 7 under any operating mode, all form and never depart from body, this design overcomes existing constant-closed type hydraulic chuck can not the defect of comprehensive application.Chuck oil cylinder body 6 is provided with external hydraulic oil joint, between oil cylinder piston 4 and chuck oil cylinder body 6, is provided with dust ring, can effectively prevent foreign material from entering chuck oil cylinder body 6.
Its operating principle: in use: be in clamped condition (normally closed type) when chuck does not work, spring has certain pre compressed magnitude.During work, hydraulic oil enters in chuck oil cylinder body 6 by hydraulic oil joint, promote oil cylinder piston 4 to move right vertically, oil cylinder piston 4 promotes thrust ball bearing 5 and lock pad and round nut 3, slippage axle 7, slips unclamps set screws 13, this entirety of slip spider 15 moves right, slip spider 15 compresses all groups of springs, the slips of slips group 17 radially outward moves along the inclined-plane T groove in slip spider 15, and chuck opening amount increases, and chuck unclamps; After the body of rod enters chuck, hydraulic system decompression, hydraulic oil oil return, groups of springs is extended, and promotes slip spider 15 and is moved to the left vertically, and slip spider 15 drives that slips unclamps set screws 13, slippage axle 7, oil cylinder piston 4, thrust ball bearing 5 and lock pad and round nut 3, this entirety is moved to the left, slips group 17 is along the inclined-plane T groove in slip spider 15, radially-inwardly move, chuck opening amount reduces, and chuck clamps.When chuck rotates, except bearing cover 2, cylinder block 1, oil cylinder piston 4, chuck oil cylinder body 6 and hydraulic oil joint non rotating, all the other equal rotating parts.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of application claims.
Claims (9)
1. a small column groups of springs normally closed type strip slips chuck, comprise fixed cell assembly, slips rotary unit assembly, admittedly revolve separative element assembly and drilling rod water dust resistance from unit block, it is characterized in that: described slips rotary unit assembly comprises slips group (17), slip spider (15), with spring base (14), outer shroud cluster spring group (8) and inner ring group (12) are evenly distributed in slip spider (15) or spring base (14) matches in each cylindrical hole of the garden annular formed with it, the original grip power of slips group (17) is provided.
2. small column groups of springs normally closed type strip slips chuck according to claim 1, it is characterized in that: described outer shroud cluster spring group (8) comprises the big spring little spring contrary with rotation direction or an end cap housing screw group (16), its big spring and little spring one end are located in the hole of spring base (14), the other end withstands on the end face seam of slip spider (15), inner ring group (12) comprises a spring and a slips unclamps set screws (13), its spring one end is located in the hole of slip spider (15), the other end withstands on the end face of torsion pass hollow pin (11).
3. small column groups of springs normally closed type strip slips chuck according to claim 1, it is characterized in that: described slip spider (15) is provided with 5 ~ 9 T-shaped surface grooves at circumferencial direction, each T-shaped surface groove, built with strip slips and wear-resistant block, is centripetally arranged in slips group (17).
4. small column groups of springs normally closed type strip slips chuck according to claim 1, it is characterized in that: the two ends of described slips group (17) are provided with slips rear ends wearing plate (18), outside is provided with slips group gland (19), and slips group gland (19) is fixed on spring base (14) by end cap housing screw group (16).
5. small column groups of springs normally closed type strip slips chuck according to claim 4, is characterized in that: the gap being provided with 0.15-0.2mm between slips group (17) and slips rear ends wearing plate (18).
6. small column groups of springs normally closed type strip slips chuck according to claim 4, it is characterized in that: described drilling rod water dust resistance comprises water-ring (20) and front gland (21) from unit block, front gland (21) is fixed on slips group gland (19), and water-ring (20) is located between front gland (21) and slips group gland (19).
7. small column groups of springs normally closed type strip slips chuck according to claim 1, it is characterized in that: spring base (14) is fixed on main shaft (1), spring base (14) is connected with torsion pass plate (10) by torsion pass hollow pin (11), and torsion pass plate (10) is connected by torsion pass pin (9) with main shaft (1).
8. small column groups of springs normally closed type strip slips chuck according to claim 2, it is characterized in that: described fixed cell assembly comprises bearing cover (2), chuck oil cylinder body (6) and oil cylinder piston (4), admittedly revolve separative element assembly to comprise thrust bearing (5) and lock pad and round nut (3), slips unclamps set screws (13) and is connected in slippage axle (7) through slip spider (15), slippage axle (7) is located in oil cylinder piston (4), oil cylinder piston (4) is sheathed in chuck oil cylinder body (6), thrust bearing (5) is provided with between oil cylinder piston (4) and slippage axle (7), slippage axle (7) is fixed with lock pad and round nut (3).
9. small column groups of springs normally closed type strip slips chuck according to claim 8, it is characterized in that: described chuck oil cylinder body (6) is provided with external hydraulic oil joint, between oil cylinder piston (4) and chuck oil cylinder body (6), be provided with dust ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510076460.7A CN104790884B (en) | 2015-02-13 | 2015-02-13 | A kind of small column groups of springs normally closed type strip slips chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510076460.7A CN104790884B (en) | 2015-02-13 | 2015-02-13 | A kind of small column groups of springs normally closed type strip slips chuck |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104790884A true CN104790884A (en) | 2015-07-22 |
| CN104790884B CN104790884B (en) | 2018-02-27 |
Family
ID=53556020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510076460.7A Expired - Fee Related CN104790884B (en) | 2015-02-13 | 2015-02-13 | A kind of small column groups of springs normally closed type strip slips chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104790884B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108915618A (en) * | 2018-08-10 | 2018-11-30 | 河北华北石油荣盛机械制造有限公司 | A kind of sleeve type hydraulic rotating slips |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200952364Y (en) * | 2006-09-29 | 2007-09-26 | 重庆科技学院 | Whole hydraulic spider for gas drainage drilling machine |
| CN201196038Y (en) * | 2007-11-29 | 2009-02-18 | 中国地质装备总公司 | Cylinder helical spring type hydraulic chuck |
| CN201241638Y (en) * | 2008-08-20 | 2009-05-20 | 石家庄中煤装备制造有限公司 | Constant-closed type hydraulic chuck |
| CN102434116A (en) * | 2012-01-17 | 2012-05-02 | 江苏省无锡探矿机械总厂有限公司 | Nitrogen spring type hydraulic chuck |
| CN203891800U (en) * | 2014-05-23 | 2014-10-22 | 浙江杭钻机械制造股份有限公司 | Normally-closed hydraulic chuck with quick-change slip |
| CN204552642U (en) * | 2015-02-13 | 2015-08-12 | 杭州祥龙钻探设备科技股份有限公司 | Small column groups of springs normally closed type strip slips chuck |
-
2015
- 2015-02-13 CN CN201510076460.7A patent/CN104790884B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200952364Y (en) * | 2006-09-29 | 2007-09-26 | 重庆科技学院 | Whole hydraulic spider for gas drainage drilling machine |
| CN201196038Y (en) * | 2007-11-29 | 2009-02-18 | 中国地质装备总公司 | Cylinder helical spring type hydraulic chuck |
| CN201241638Y (en) * | 2008-08-20 | 2009-05-20 | 石家庄中煤装备制造有限公司 | Constant-closed type hydraulic chuck |
| CN102434116A (en) * | 2012-01-17 | 2012-05-02 | 江苏省无锡探矿机械总厂有限公司 | Nitrogen spring type hydraulic chuck |
| CN203891800U (en) * | 2014-05-23 | 2014-10-22 | 浙江杭钻机械制造股份有限公司 | Normally-closed hydraulic chuck with quick-change slip |
| CN204552642U (en) * | 2015-02-13 | 2015-08-12 | 杭州祥龙钻探设备科技股份有限公司 | Small column groups of springs normally closed type strip slips chuck |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108915618A (en) * | 2018-08-10 | 2018-11-30 | 河北华北石油荣盛机械制造有限公司 | A kind of sleeve type hydraulic rotating slips |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104790884B (en) | 2018-02-27 |
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Granted publication date: 20180227 |