CN104084926A - Detachment device and detachment method for detaching crank pin and crank shaft sleeve - Google Patents
Detachment device and detachment method for detaching crank pin and crank shaft sleeve Download PDFInfo
- Publication number
- CN104084926A CN104084926A CN201410293580.8A CN201410293580A CN104084926A CN 104084926 A CN104084926 A CN 104084926A CN 201410293580 A CN201410293580 A CN 201410293580A CN 104084926 A CN104084926 A CN 104084926A
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- China
- Prior art keywords
- crank
- fastener
- pin
- axle sleeve
- screw mandrel
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
- B25B27/023—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same using screws
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
- Automatic Assembly (AREA)
Abstract
The invention discloses a detachment device and a detachment method for detaching a crank pin and a crank shaft sleeve. The detachment device comprises a lead screw (1); one end of the lead screw (1) is provided with a wrench (11) which can be used for twisting the lead screw (1); the other end of the lead screw (1) is provided with an ejector plate (2) which is used for playing a supporting role; the front end of the ejector plate (2) is provided with a clamping part (6); the clamping part (6) and the crank pin or the crank shaft sleeve are clamped together; the lead screw (1) is twisted through the wrench (11), the ejector plate (2) and the clamping part (6) are driven by the lead screw (1) to rotate, and the crank pin or the crank shaft sleeve is driven by the rotating clamping part (6) to rotate so as to enable the crank pin or the crank shaft sleeve to be loosened. According to the detachment device for detaching the crank pin or the crank shaft sleeve, the force applied to the crank pin and the crank shaft sleeve to be detached can be uniform due to the lead screw and accordingly the damage to the crank pin and the crank shaft sleeve can be avoided.
Description
Technical field
The present invention relates to a kind of provision for disengagement, relate in particular to the provision for disengagement of a kind of dismounting crank-pin and crank axle sleeve, also relate to a kind of method for dismounting of dismantling crank-pin and crank axle sleeve simultaneously.
Background technology
Beam pumping unit in process of production, adjusting stroke is that a kind of comparatively common ground parameter is adjusted mode, and adjust stroke, need to dismantle crank-pin and crank axle cover, due to weather conditions such as Tahe Region dust storm, arids, often cause crank axle lubricating oil dry, cause crank axle sleeve rust dead.Generally field by using is that the modes such as physical shock, whole baking, hydraulic pressure overhead are removed crank-pin and crank axle sleeve.These modes exist that operating space is restricted above, the activity duration is long, reduce life of equipment, safety coefficient reduces, operates the shortcomings such as extremely inconvenient, has not only increased device damage rate, has also had a strong impact on the daily production of oil well.
Respectively existing crank-pin and crank axle sleeve method for dismounting are described below:
(1) conventional physical shock dismounting mode
During operation, first oil pumper is stopped to suitable seat in the plane, after crank unloading, with hand hammer by the crown type nut dismounting on oil pumper to half stroke, then with sledgehammer, knock crown type nut, knock to crown type nut and crank laminating, crown type nut is moved back and buckled to screw thread end, carry out sledgehammer again and knock, crank-pin impacts out crank hole the most at last; Then with hand hammer, axle sleeve is knocked to shaft outlet hole.
(2) hydraulic pressure overhead dismounting mode
During operation, first oil pumper is stopped to suitable seat in the plane, after crank unloading, hydraulic jack is fixed on oil pumping machine crank by front and rear baffle, utilize the mode of hydraulic pressure that crank-pin overhead is gone out to crank hole; Then with hand hammer, axle sleeve is knocked to shaft outlet hole.
(3) whole baking mode
During operation, in the time of all cannot fulfiling assignment due to the dismounting of conventional physical shock and hydraulic pressure overhead, utilize the physical property of metal heat-expansion shrinkage, in crank connecting link junction, heat baking, after heating, take again the mode of conventional physical shock to dismantle.
But in above-mentioned prior art, have a lot of weak points, as high in field operation danger coefficient, operating personnel need stand in and in crank guard rail, carry out sledgehammer and knock operation; Require staff many, labour intensity is large, is at least 4-6 people; With duration, can reach 1-2 hour at most, cause work limitation to reduce, thereby affect oil well output; A large amount of application of forces of personnel and the cooperation of multiple machinery are carried out simultaneously, very easily cause personal damage when work; Physical shock mode easily causes crown type nut and crank-pin screw thread to damage.
Summary of the invention
In order to overcome the above problems, the invention provides a kind of provision for disengagement and method for dismounting of dismantling crank-pin and crank axle sleeve, this provision for disengagement is by being used screw mandrel, and making to act on the crank-pin that will remove and crank axle, to put active force even, to avoid damaging crank-pin, crank axle sleeve.
To achieve these goals, the invention provides a kind of provision for disengagement of dismantling crank-pin and crank axle sleeve, this provision for disengagement comprises screw mandrel, and one end of screw mandrel is provided with the spanner that can twist screw mandrel; The other end of screw mandrel is provided with passively takes over a business, the front end of taking over a business is provided with fastener, fastener and crank-pin or crank axle sleeve block mutually and, spanner is twisted screw mandrel, screw mandrel is driven and the rotation of fastener, the fastener rotating drives crank-pin or crank axle sleeve to rotate, so that crank-pin or crank axle sleeve are loosening.
As further optimization of the present invention, this provision for disengagement also includes the fixedly fixture of screw mandrel, this fixture comprises the front apron that is equipped with screw mandrel, be arranged on the fixed head of crank front side, and the backboard that is arranged on crank rear side, wherein fixed head is arranged between front apron and backboard, and fixed head and backboard are close to crank setting, and front apron, fixed head and backboard connect by connecting rod.
As further optimization of the present invention, connecting rod is two, be separately positioned on the dual-side of crank, the centre of fixed head is provided with opening, this open card is located on crank axle sleeve excircle, fixed head is fastened on crank axle through the connecting rod that connects front apron and backboard and puts, and front apron and backboard are fixed on crank.
As further optimization of the present invention, when fastener is fastened on crank-pin, it is tubular structure, to increase fastener and crank-pin in axial contact area.
As further optimization of the present invention, when fastener engages with crank axle sleeve, fastener is disc-shaped structure, to increase fastener and crank axle, is enclosed within contact area radially.
As further optimization of the present invention, on spanner, be installed with extension bar, hollow is arranged at the middle part of extension bar, forms hollow bulb, to match with spanner; The outer setting of extension bar has projection, to increase the frictional force between staff and extension bar.
As further optimization of the present invention, take over a business and fastener between be provided with skewback, skewback one side is plane, this plane with take over a business laminating; Skewback another side is inclined-plane, this inclined-plane and fastener laminating; Be provided with opening in the middle of skewback, with can be inserted into and fastener between, fastener has a down dip in the effect on inclined-plane, when crank-pin causes crank-pin two ends asymmetric because of corrosion, by skewback, regulates fastener to coordinate with crank-pin.
As further optimization of the present invention, take over a business and fastener between be provided with shaft-like extension rod, to reduce the displacement of screw mandrel.
The present invention also provides a kind of method for dismounting of dismantling crank-pin and crank axle sleeve, and the method is used above-mentioned any provision for disengagement, and the method comprises the following steps: fixing board card is located on the excircle of crank axle sleeve; Backboard is arranged on to crank rear side, and front apron is arranged on fixed head front side, with connecting rod, front apron, fixed head and backboard is fixedly connected with; Screw mandrel is located on front apron; Screw mandrel is installed near one end of fixed head, other end assembly wrench; Take over a business front end the fastener that can coordinate with crank-pin is installed; Rotating spanner, makes fastener engage with crank-pin, and then drives crank-pin to rotate, to depart from crank; Reverse rotation spanner screw mandrel is return to initial position, be replaced with the fastener that can coordinate with crank axle sleeve, take over a business and fastener between extension rod is installed; Rotating spanner, makes fastener coordinate with crank axle sleeve, and then drives crank axle sleeve to rotate, to depart from crank.
As further optimization of the present invention, when crank-pin two ends are asymmetric, at fastener and between taking over a business, skewback is installed, regulate fastener gradient, make to coordinate between fastener and crank-pin.
In the present invention, by using screw mandrel, making to act on the crank-pin that will remove and crank axle, to put active force even, to avoid damaging crank-pin, crank axle sleeve; And in the present invention, adopt front and rear baffle to add and hold, during dismounting crank-pin, by the at the uniform velocity active force of rotary screw, make crank-pin stressed gradually, crank-pin is dismantled; Dismounting crank axle sleeve, installs extension rod additional at screw mandrel top, by rotary screw, makes crank axle sleeve exit axis hole equally; Provision for disengagement in the present invention simultaneously can also be dismantled crank-pin when crank-pin causes crank-pin left-right asymmetry because of corrosion.
Accompanying drawing explanation
Fig. 1 is the structural representation of provision for disengagement in the present invention;
Fig. 2 is the structural representation of skewback in the present invention;
Fig. 3 is the structural representation of fixed head in the present invention;
Fig. 4 is the structural representation of spanner in the present invention;
Fig. 5 is the structural representation of extension bar in the present invention.
The specific embodiment
Below, by exemplary embodiment, the present invention is specifically described.Yet should be appreciated that element, structure and the feature in an embodiment also can be attached in other embodiments valuably in the situation that further not narrating.
It should be noted that, in the front side of crank described in description of the present invention, refer to a side that is provided with crank-pin and crank axle sleeve on crank, a side relative with the front side of crank is the rear side of crank.Referring to Fig. 1-Fig. 5, as shown in the figure, a kind of provision for disengagement of dismantling crank-pin and crank axle sleeve in the present invention, crank-pin and crank axle are set on crank 13, this provision for disengagement comprises screw mandrel 1, one end of screw mandrel 1 is provided with the spanner 11 that can twist screw mandrel 1, screw mandrel 1 changes into by gyration the translational motion moving forward and backward by twisting of spanner 11, the preferred ratchet spanner of this spanner 11, by spanner 11 twist screw mandrel 1 because of lever principle more laborsaving, on spanner 11, be installed with extension bar 12, hollow is arranged at the middle part of extension bar 12, form hollow bulb 121, to match with spanner 11, simultaneously in order to increase the frictional force between staff and extension bar 12, in the outside of extension bar 12, be also provided with projection 122, be convenient to the staff extension bar 12 of holding with a firm grip, rotate extension bar 12 band wrench and rotate, so just can dismantle away from the safe range of crank 13, the other end of screw mandrel 1 is provided with passively takes over a business 2, take over a business 2 front end be provided with can block mutually with crank-pin or crank axle sleeve and fastener 6, when fastener 6 is fastened on crank-pin, it is tubular structure, to increase fastener 6 and crank-pin in axial contact area, when fastener 6 engages with crank axle sleeve, it is disc-shaped structure, to increase fastener 6, is enclosed within contact area radially with crank axle.When dismounting crank-pin and crank axle sleeve, by extension bar 12 rotating spanners 11, spanner 11 is twisted screw mandrel 1, screw mandrel 1 rotates and then drives 2 rotations of taking over a business of screw mandrel 1 end, screw mandrel 1 rotates by taking over a business 2 drive fasteners 6, fastener 6 drives crank-pins or crank axle sleeve to rotate, so that crank-pin, crank axle sleeve is loosening and then depart from crank.
Because being enclosed within to twist, the crank-pin on crank and crank axle need larger power when loosening, when bearing larger active force, easily there is the distortion of screw mandrel in screw mandrel 1, therefore for fixed support screw mandrel, this provision for disengagement also includes fixture, this fixture comprises the front apron 5 that is equipped with screw mandrel 1, be arranged on the fixed head 10 of crank 13 front sides, and the backboard 4 that is arranged on crank 13 rear sides, wherein fixed head 10 is arranged between front apron 5 and backboard 4, fixed head 10 and backboard 4 are close to crank 13 and are arranged, front apron 5, fixed head 10 and backboard 4 connect by connecting rod 3, connecting rod 3 is preferably bolt, be preferably two, be separately positioned on the dual-side of crank 10, the centre of fixed head 10 is provided with opening, this open card is located on crank axle sleeve excircle, fixed head 10 is fastened on crank axle through the connecting rod 3 that connects front apron 5 and backboard 4 and puts, can not only front apron 5 and backboard 4 be fixed on to crank front and back by fixed head 10 like this, play positioning action simultaneously.
With further reference to accompanying drawing, as shown in the figure, screw mandrel 1 is located on front apron 5, and screw mandrel 1 can move forward and backward on front apron 5, and 5 pairs of screw mandrels 1 of front apron play a supportive role, and prevents that screw mandrel 1 from deflecting simultaneously; When dismounting crank-pin and crank axle sleeve, first fixture is arranged on crank, and the position that regulates fixture, makes screw mandrel 1 over against crank-pin, by the spanner 11 on screw mandrel 1, twists screw mandrel 1, screw mandrel 1 moves forward and backward on front apron 5, until fastener 6 is aimed at crank-pin, and is linked on crank-pin, continue to twist spanner, crank-pin is rotated, and crank-pin is loosening to depart from crank on crank; Oppositely twist spanner, make screw mandrel away from crank, then change the fastener 6 that can coordinate with crank axle sleeve, twist spanner, make fastener 6 aim at crank axle sleeves, and be linked in crank axle and put, continue to twist spanner, make crank axle sleeve loosening, and then depart from crank, thereby realize the dismounting of crank-pin and crank axle sleeve.
Because of crank-pin easy-to-rust, crank-pin after corrosion often highly differs, in order to address this problem, in the present invention take over a business 2 and fastener 6 between be provided with skewback 9, skewback one side is plane, another side is inclined-plane, in the middle of skewback 9, be provided with opening, with can be inserted into 2 and fastener 6 between, skewback 9 is preferably iron block, the side that wherein skewback 9 is plane with take over a business 2 laminatings, skewback is a side and fastener 6 laminatings on inclined-plane, fastener 6 has a down dip in the effect on inclined-plane, when crank-pin causes crank-pin two ends asymmetric because of corrosion, by skewback 9, regulate fastener 6 to coordinate with crank-pin.
In the present invention when by after crank-pin dismounting, because of crank axle sleeve apart from fastener apart from increase, the distance increasing just need to be by twisting spanner, so that screw mandrel reach, in order to reduce manpower, twist spanner, take over a business 2 and fastener 6 between be provided with shaft-like extension rod 8, like this fastener with take over a business distance and increase, can make fastener and crank axle sleeve distance reduce, by fastener during near crank axle sleeve, just can reduce the displacement of screw mandrel, also just reduce the number of times of twisting of spanner simultaneously, reach labour-saving effect.
A kind of method of dismantling crank-pin and crank axle sleeve is also provided in the present invention, and the method is used above-mentioned any provision for disengagement, and the method comprises the following steps: fixing board card is located on the excircle of crank axle sleeve; Backboard is arranged on to crank rear side, and front apron is arranged on fixed head front side, with bolt, front apron, fixed head and backboard is fixedly connected with; Screw mandrel is located on front apron; Screw mandrel is installed near one end of fixed head, other end assembly wrench; Take over a business front end the fastener that can coordinate with crank-pin is installed; When crank-pin two ends are asymmetric, at fastener and between taking over a business, skewback is installed, regulate fastener gradient, make to coordinate between fastener and crank-pin; Rotating spanner, makes fastener coordinate with crank-pin, and then drives crank-pin to rotate, to depart from crank; Reverse rotation spanner screw mandrel is return to initial position, be replaced with the fastener that can coordinate with crank axle sleeve, take over a business and fastener between extension rod is installed; Rotating spanner, makes fastener coordinate with crank axle sleeve, and then drives crank axle sleeve to rotate, to depart from crank.
Be appreciated that the present invention is described by some embodiment, those skilled in the art know, without departing from the spirit and scope of the present invention, can carry out various changes or equivalence replacement to these features and embodiment.In addition, under instruction of the present invention, can modify to adapt to concrete situation and material and can not depart from the spirit and scope of the present invention these features and embodiment.Therefore, the present invention is not subject to the restriction of specific embodiment disclosed herein, and the embodiment within the scope of all the application's of falling into claim belongs in the scope that the present invention protects.
Claims (10)
1. a provision for disengagement of dismantling crank-pin and crank axle sleeve, is characterized in that, this provision for disengagement comprises screw mandrel (1), and one end of screw mandrel (1) is provided with the spanner (11) that can twist screw mandrel (1); The other end of screw mandrel (1) is provided with passive take over a business (2), the front end of taking over a business (2) is provided with fastener (6), fastener (6) and crank-pin or crank axle sleeve block mutually and, spanner (11) is twisted screw mandrel (1), screw mandrel (1) drives the rotation of (2) and fastener (6), the fastener (6) rotating drives crank-pin or crank axle sleeve to rotate, so that crank-pin or crank axle sleeve are loosening.
2. the provision for disengagement of dismounting crank-pin according to claim 1 and crank axle sleeve, it is characterized in that, this provision for disengagement also includes the fixedly fixture of screw mandrel (1), this fixture comprises the front apron (5) that is equipped with screw mandrel (1), be arranged on the fixed head (10) of crank (13) front side, and the backboard (4) that is arranged on crank (13) rear side, wherein fixed head (10) is arranged between front apron (5) and backboard (4), fixed head (10) and backboard (4) are close to crank (13) setting, front apron (5), fixed head (10) and backboard (4) connect by connecting rod (3).
3. the provision for disengagement of dismounting crank-pin according to claim 2 and crank axle sleeve, it is characterized in that, connecting rod (3) is two, be separately positioned on the dual-side of crank (10), the centre of fixed head (10) is provided with opening, this open card is located on crank axle sleeve excircle, fixed head (10) is fastened on crank axle through the connecting rod (3) that connects front apron (5) and backboard (4) and puts, and front apron (5) and backboard (4) are fixed on crank.
4. the provision for disengagement of dismounting crank-pin according to claim 1 and crank axle sleeve, is characterized in that, when fastener (6) is fastened on crank-pin, it is tubular structure, to increase fastener (6) and crank-pin in axial contact area.
5. the provision for disengagement of dismounting crank-pin according to claim 1 and crank axle sleeve, it is characterized in that, when fastener (6) engages with crank axle sleeve, fastener (6) is disc-shaped structure, to increase fastener (6), is enclosed within contact area radially with crank axle.
6. the provision for disengagement of dismounting crank-pin according to claim 1 and crank axle sleeve, it is characterized in that, on spanner (11), be installed with extension bar (12), hollow is arranged at the middle part of extension bar (12), form hollow bulb (121), to match with spanner (11); The outer setting of extension bar (12) has projection (122), to increase the frictional force between staff and extension bar (12).
7. the provision for disengagement of dismounting crank-pin according to claim 1 and crank axle sleeve, it is characterized in that, take over a business between (2) and fastener (6) and be provided with skewback (9), skewback (9) one sides are plane, this plane with take over a business (2) laminating; Skewback (9) another side is inclined-plane, this inclined-plane and fastener (6) laminating; In the middle of skewback (9), be provided with opening, can be inserted between (2) and fastener (6), the effect of fastener (6) on inclined-plane has a down dip, when crank-pin causes crank-pin two ends asymmetric because of corrosion, by skewback (9), regulate fastener (6) to coordinate with crank-pin.
8. the provision for disengagement of dismounting crank-pin according to claim 1 and crank axle sleeve, is characterized in that, takes over a business between (2) and fastener (6) and is provided with shaft-like extension rod (8), to reduce the displacement of screw mandrel (1).
9. dismantle a method for dismounting for crank-pin and crank axle sleeve, the method is used the provision for disengagement of any one in the claims 1-8, it is characterized in that, the method comprises the following steps: fixing board card is located on the excircle of crank axle sleeve; Backboard is arranged on to crank rear side, and front apron is arranged on fixed head front side, with connecting rod, front apron, fixed head and backboard is fixedly connected with; Screw mandrel is located on front apron; Screw mandrel is installed near one end of fixed head, other end assembly wrench; Take over a business front end the fastener that can coordinate with crank-pin is installed; Rotating spanner, makes fastener engage with crank-pin, and then drives crank-pin to rotate, to depart from crank; Reverse rotation spanner screw mandrel is return to initial position, be replaced with the fastener that can coordinate with crank axle sleeve, take over a business and fastener between extension rod is installed; Rotating spanner, makes fastener coordinate with crank axle sleeve, and then drives crank axle sleeve to rotate, to depart from crank.
10. the method for dismounting of dismounting crank-pin according to claim 9 and crank axle sleeve, is characterized in that, when crank-pin two ends are asymmetric, at fastener and between taking over a business, skewback is installed, and regulates fastener gradient, makes to coordinate between fastener and crank-pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410293580.8A CN104084926B (en) | 2014-06-26 | 2014-06-26 | A kind of method for dismounting dismantling crank-pin and crank axle sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410293580.8A CN104084926B (en) | 2014-06-26 | 2014-06-26 | A kind of method for dismounting dismantling crank-pin and crank axle sleeve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104084926A true CN104084926A (en) | 2014-10-08 |
| CN104084926B CN104084926B (en) | 2016-08-03 |
Family
ID=51632742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410293580.8A Expired - Fee Related CN104084926B (en) | 2014-06-26 | 2014-06-26 | A kind of method for dismounting dismantling crank-pin and crank axle sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104084926B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108527245A (en) * | 2018-06-19 | 2018-09-14 | 泰州市铧颐特种装备有限公司 | A kind of piston pin backing-out punch |
| CN109968278A (en) * | 2019-04-29 | 2019-07-05 | 山东大学深圳研究院 | Bicycle crank and the synchronous extracting tool of crank screw |
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| JPH09155759A (en) * | 1995-11-30 | 1997-06-17 | Kyoto Kikai Kogu Kk | Pulley puller |
| JP2000225579A (en) * | 1999-02-05 | 2000-08-15 | Honda Motor Co Ltd | Piston inserting device |
| CN2822893Y (en) * | 2005-08-26 | 2006-10-04 | 赵建光 | Device for extacting bush of wrist pin of oil pumping unit |
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| CN201082532Y (en) * | 2007-07-20 | 2008-07-09 | 宝山钢铁股份有限公司 | Shaft sleeve detaching device |
| CN201304633Y (en) * | 2008-10-31 | 2009-09-09 | 中国石油化工股份有限公司河南油田分公司第二采油厂 | Bush removing device |
| CN203527379U (en) * | 2013-11-15 | 2014-04-09 | 王旭 | Dismounting device of oil pumping unit crank pin |
| CN203945324U (en) * | 2014-06-26 | 2014-11-19 | 中国石油化工股份有限公司 | A kind of provision for disengagement of dismantling crank-pin and crank axle sleeve |
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2014
- 2014-06-26 CN CN201410293580.8A patent/CN104084926B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09155759A (en) * | 1995-11-30 | 1997-06-17 | Kyoto Kikai Kogu Kk | Pulley puller |
| JP2000225579A (en) * | 1999-02-05 | 2000-08-15 | Honda Motor Co Ltd | Piston inserting device |
| CN2822893Y (en) * | 2005-08-26 | 2006-10-04 | 赵建光 | Device for extacting bush of wrist pin of oil pumping unit |
| CN2832439Y (en) * | 2005-10-18 | 2006-11-01 | 郭爱华 | Crank pin stripper of pumping unit |
| CN201082532Y (en) * | 2007-07-20 | 2008-07-09 | 宝山钢铁股份有限公司 | Shaft sleeve detaching device |
| CN201304633Y (en) * | 2008-10-31 | 2009-09-09 | 中国石油化工股份有限公司河南油田分公司第二采油厂 | Bush removing device |
| CN203527379U (en) * | 2013-11-15 | 2014-04-09 | 王旭 | Dismounting device of oil pumping unit crank pin |
| CN203945324U (en) * | 2014-06-26 | 2014-11-19 | 中国石油化工股份有限公司 | A kind of provision for disengagement of dismantling crank-pin and crank axle sleeve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108527245A (en) * | 2018-06-19 | 2018-09-14 | 泰州市铧颐特种装备有限公司 | A kind of piston pin backing-out punch |
| CN109968278A (en) * | 2019-04-29 | 2019-07-05 | 山东大学深圳研究院 | Bicycle crank and the synchronous extracting tool of crank screw |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104084926B (en) | 2016-08-03 |
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