CN109176389B - Self-locking type puller - Google Patents
Self-locking type puller Download PDFInfo
- Publication number
- CN109176389B CN109176389B CN201811087170.2A CN201811087170A CN109176389B CN 109176389 B CN109176389 B CN 109176389B CN 201811087170 A CN201811087170 A CN 201811087170A CN 109176389 B CN109176389 B CN 109176389B
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- Prior art keywords
- guide
- face
- hole
- pull rod
- guide body
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- 210000000078 claw Anatomy 0.000 claims abstract description 32
- 238000003825 pressing Methods 0.000 claims abstract description 23
- 210000001503 joint Anatomy 0.000 claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 description 7
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000283086 Equidae Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
- Clamps And Clips (AREA)
Abstract
The invention discloses a self-locking type puller which comprises a puller sleeve, a counter-force seat pressing ring, a pushing claw, a guide body, a pulling hook and a pulling rod, wherein the puller sleeve, the counter-force seat pressing ring and the guide body are fixedly connected, a plurality of guide grooves are formed in the axial direction of the guide body, guide pieces which are in matched connection with the guide grooves are arranged on the pushing claw, the bottom end face of each guide piece is a wedge-shaped end face, the pulling hook is positioned in the guide groove, the outer side face of the pulling hook is a wedge-shaped end face, the outer side face of the pulling hook is in matched connection with the bottom end face of each guide piece, the pulling rod is fixed with the pushing claw, one end of the pulling rod extends to the position of the pulling hook, the outer side face of the pulling rod is in butt joint with the inner side face of the pulling hook, and springs are arranged outside the pulling rod and are respectively in butt joint with the pushing claw and the guide body. The invention has simple structure and convenient operation, and can realize larger holding force by adopting smaller external pressure, thereby ensuring that the workpiece to be operated is clamped and not fallen off.
Description
Technical Field
The invention belongs to the technical field of manufacturing of engine crankshaft oil seal press-fit workpieces, and particularly relates to a self-locking type puller.
Background
The press mounting of the front and rear oil seals of the crankshaft is usually realized by a press mounting device. For the existing press-fitting device, if the front oil seal of the crankshaft is pressed, the rear end face of the corresponding engine cylinder body is required to be used as a reaction surface; in contrast, if the crankshaft rear oil seal is press-fitted, it is necessary to use the front end face of the corresponding engine block as the reaction face. Therefore, the prior press-fitting device has the defects of huge volume and large occupied operation space.
The puller is also an additional workpiece, has the advantages of a reaction surface and a close press-fit point, has small volume and small occupied operation space, and is widely applied to the processes of DCT transmission assembling, bearing press-fit and crankshaft oil seal press-fit. However, the existing puller has some defects: if the operation of the pulling horse is not convenient enough, the action time is long, and the production beat is prolonged; and some draw horses mainly comprising pneumatic three-jaw chucks are easy to fall off workpieces to be operated due to insufficient clamping force in the process of clamping an oil seal, and extra workload is added, and meanwhile, the preparation cost of the puller is high, and the later maintenance cost is high.
Disclosure of Invention
The invention aims to solve the technical problems of huge volume, complex structure, long action time and weak clamping force of a self-locking type puller in the prior art.
In order to solve the above-mentioned technical problems, the invention adopts the technical scheme that: the utility model provides a from locking-type draws horse which characterized in that: including drawing the cover, being located the inside counterforce seat clamping ring of drawing the cover, being located the inside pawl of counterforce seat clamping ring, being located the inside guide body of pawl, drag hook and being located the inside pull rod of guide body, draw cover, counterforce seat clamping ring and guide body fixed connection, be provided with a plurality of guide slots in the guide body axial, be provided with on the pawl with guide slot matchedly connected's guide piece, the bottom end face of guide piece is wedge terminal surface, the drag hook is located the guide slot, and the lateral surface of drag hook is wedge terminal surface, the lateral surface of drag hook and the bottom end face matchedly connected of guide piece, the pull rod is fixed with the pawl, and the one end of pull rod extends to drag hook position department, and the lateral surface of pull rod and the medial surface butt of drag hook, the outside of pull rod is provided with the spring, the one end and the pawl butt of spring, the other end and the guide body butt of spring.
Preferably, the guide body comprises a positioning part, a fixing part and a guide part, a first shaft hole is formed in the positioning part, a mounting hole for mounting the guide body is formed in the side face of the positioning part, the fixing part protrudes out of the positioning part and the guide part, the guide part is hollow, the guide groove is formed in the fixing part and the guide part and does not penetrate through the guide part, one end of the drag hook is abutted to the positioning part, and the other end of the drag hook is abutted to the guide part.
Preferably, the top end surface of the pushing claw is closed, a second shaft hole is formed in the top end surface, and a spring mounting groove is formed in the inner side of the top end surface, close to the second shaft hole.
Preferably, the diameter of the first shaft hole is larger than that of the pull rod, and the diameter of the second shaft hole is equal to that of the pull rod.
Preferably, the pull rod comprises a first equal-diameter section, a second equal-diameter section and an expanded-diameter section, and the second equal-diameter section is in contact with the expanded-diameter section and the inner side surface of the drag hook.
Preferably, a sliding guide groove is arranged in the first constant diameter section corresponding to the mounting hole, and a guide body in the mounting hole is in sliding connection with the sliding guide groove.
Preferably, one end of the pull rod extending into the drag hook is fixed with a pull rod cone, and the pull rod cone is abutted with the inner side surface of the drag hook.
Preferably, one end of the pull rod extending to the outside of the pushing claw is provided with a clamp spring groove, a clamp spring is fixed in the clamp spring groove, an adjusting pad is further arranged on the pull rod, and the adjusting pad is located between the clamp spring and the pushing claw.
Preferably, a plurality of positioning holes are formed in the outer portion of the pull sleeve, and a bushing is arranged in each positioning hole.
The invention has the beneficial effects that: the invention discloses a self-locking type puller which comprises a puller sleeve, a counter-force seat pressing ring, a pushing claw, a guide body, a pulling hook and a pulling rod, wherein the puller sleeve, the counter-force seat pressing ring and the guide body are fixedly connected, a plurality of guide grooves are formed in the axial direction of the guide body, guide pieces which are in matched connection with the guide grooves are arranged on the pushing claw, the bottom end face of each guide piece is a wedge-shaped end face, the pulling hook is positioned in the guide groove, the outer side face of the pulling hook is a wedge-shaped end face, the outer side face of the pulling hook is in matched connection with the bottom end face of each guide piece, the pulling rod is fixed with the pushing claw, one end of the pulling rod extends to the position of the pulling hook, the outer side face of the pulling rod is in butt joint with the inner side face of the pulling hook, and springs are arranged outside the pulling rod and are respectively in butt joint with the pushing claw and the guide body. According to the self-locking type puller, the pull rod is pressed down by an external power source, the pushing claw is further driven to press down, the guide piece in the pushing claw moves downwards in the guide groove, and under the matching effect of the guide piece and the wedge-shaped end face of the retractor, the retractor is folded in the radial direction after the guide piece is abutted against the retractor, and the retractor holds a workpiece to be operated tightly. The invention has simple structure and convenient operation, and can realize larger holding force by adopting smaller external pressure, thereby ensuring that the workpiece is clamped by the belt operation and does not fall off.
Drawings
FIG. 1 is a schematic diagram of a self-locking puller;
FIG. 2 is a cross-sectional view of a self-locking puller;
FIG. 3 is a schematic view of the structure of the pull sleeve;
FIG. 4 is a schematic structural view of a reaction force seat pressing ring;
FIG. 5 is a schematic view of the structure of the pusher dog;
FIG. 6 is a schematic view of the structure of the guide body;
FIG. 7 is a schematic diagram of the retractor;
FIG. 8 is a schematic structural view of a tie rod;
FIG. 9 is a schematic view of the construction of a pull rod cone;
in the figure, reference numerals are used for 1-pull sleeves, 1.1-first mounting grooves, 1.2-second mounting grooves, 1.3-third mounting grooves, 1.4-first steps, 1.5-second steps, 1.5.1-first screw fixing holes and 1.6-positioning holes; 2-counterforce seat pressing rings, 2.1-second through holes and 2.2-second screw fixing holes; 3-pushing claw, 3.1-top end surface of the pushing claw, 3.1.1-second shaft hole, 3.1.2-spring mounting groove and 3.2-guide piece; 4-guide body, 4.1-positioning part, 4.1.1-first shaft hole, 4.1.2-mounting hole, 4.2-fixing part, 4.3-guide part and 4.4-guide groove; 5-drag hook; 6-pull rod, 6.1-first equal diameter section, 6.1.1-clamp spring groove, 6.1.2-sliding guide groove, 6.2-second equal diameter section and 6.3-expanded diameter section; 7-clamping springs; 8-adjusting pad; 9-a spring; 10-a pull rod cone; 11-bushing.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below, and it is apparent that, the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1:
the self-locking puller comprises a pull sleeve 1, a counter-force seat pressing ring 2, a pushing claw 3, a guide body 4, a draw hook 5 and a pull rod 6, as shown in figures 1 and 2. In this embodiment, as shown in fig. 3, the pull sleeve 1 has a disc-shaped structure, and a first through hole is provided in the middle of the pull sleeve 1. Specifically, the first through hole sequentially comprises a first mounting groove 1.1, a second mounting groove 1.2 and a third mounting groove 1.3 from top to bottom. The diameter of the first mounting groove 1.1 is larger than the diameter of the second mounting groove 1.2, and the diameter of the second mounting groove 1.2 is larger than the diameter of the third mounting groove 1.3. A first step 1.4 is formed between the first mounting groove 1.1 and the second mounting groove 1.2, and a second step 1.5 is formed between the second mounting groove 1.2 and the third mounting groove 1.3. The second step 1.5 is provided with a first screw fixing hole 1.5.1. A plurality of positioning holes 1.6 are arranged in the pull sleeve 1 along the outer circumferential direction of the first through hole. The positioning hole is used for positioning after being connected with an external pneumatic assembly. A bushing 11 is arranged in the positioning hole 1.6, in this embodiment the bushing 11 is preferably an oil-free bushing.
As shown in fig. 4, the reaction force seat pressing ring 2 is also of a disc structure, and a second through hole 2.1 is formed inside the reaction force seat pressing ring. The external diameter of the counter-force seat pressing ring 2 is equal to the diameter of the first mounting groove 1.1 in the pull sleeve, the counter-force seat pressing ring 2 is positioned in the first mounting groove 1.1, and the bottom surface of the counter-force seat pressing ring 2 is abutted with the top surface of the first step 1.4. A plurality of second screw fixing holes 2.2 are arranged in the counter-force seat pressing ring 2 along the outer circumferential direction of the second through hole 2.1.
As shown in fig. 5, the pusher dog 3 is located inside the second through hole 2.1 in the reaction force-receiving die. In the embodiment, the top end face 3.1 of the pushing claw is closed, a second shaft hole 3.1.1 is formed in the middle of the top end face 3.1, and the diameter of the second shaft hole 3.1.1 is equal to that of the pull rod 6. A spring mounting groove 3.1.2 is arranged on the inner side of the top end surface 3.1 near the second shaft hole. A guide sheet 3.2 is arranged below the pushing claw 3, and a certain gap is reserved between the adjacent guide sheets 3.2. The bottom end face of the guide piece 3.2 is a wedge-shaped end face.
In this embodiment, as shown in fig. 6, the guide body 4 includes a positioning portion 4.1, a fixing portion 4.2, and a guide portion 4.3. The locating part 4.1 is located the inside of pushing away claw 3, and locating part 4.1 is inside to be provided with first shaft hole 4.1.1, and the diameter of first shaft hole 4.1.1 is greater than the diameter of pull rod 6. The side surface of the positioning part 4.1 is provided with a device for and a mounting hole 4.1.2 for mounting the guide body. The fixing part 4.2 protrudes from the positioning part 4.1 and the guiding part 4.3, the fixing part 4.2 is positioned in the second mounting groove 1.2 in the pull sleeve, and the bottom surface of the fixing part 4.2 is abutted with the top surface of the second step 1.5. The guide part 4.3 is positioned below the fixing part 4.2, and the guide part 4.3 is hollow. A plurality of guide grooves 4.4 are arranged in the fixing part 4.2 and the guide part 4.3. In this embodiment, the guide groove 4.4 penetrates the fixing portion 4.2 but does not penetrate the guide portion 4.3. The number of guide grooves 4.4 corresponds to the number of guide pieces 3.2 in the pusher dog. The guide piece 3.2 moves up and down in the guide groove 4.4 of the guide part. The guide groove in the fixing part is used for the screw to pass through. In the present embodiment of the present invention, the screw passes through the first screw fixing hole 1.5.1 in the pull sleeve, the guide groove 4.4 of the fixing part and the second screw fixing hole 2.2 in the counter-force seat pressing ring to fix the pull sleeve 1, the guide body 4 and the counter-force seat pressing ring 2.
As shown in figure 7 of the drawings, the drag hook 5 is positioned in the guide groove 4.4. Specifically, the upper end surface of the drag hook 5 is abutted with the guide body positioning part 4.1, and the lower end surface of the drag hook 5 is abutted with the bottom of the guide groove 4.4 of the guide body middle guide part. The outer side surface of the draw hook 5 is a wedge-shaped end surface, and the bottom end surface of the guide piece 3.2 is abutted with the outer side surface of the draw hook 5. When the guide plate moves downwards, the guide plate presses the draw hook downwards, and drives the draw hook to retract in the radial direction.
The pull rod 6 is connected with an external pneumatic component, and the pneumatic component drives the pull rod 6 to perform lifting motion. In this embodiment, the pneumatic assembly may be a cylinder. As shown in fig. 8, the pull rod 6 extends to the position of the drag hook 5 after passing through the second shaft hole 3.1.1 of the push claw and the first shaft hole 4.1.1 of the guide body, and the upper end of the pull rod 6 is fixed with the push claw 3. In this embodiment, the pull rod 6 includes a first constant diameter section 6.1, a second constant diameter section 6.2, and an expanded diameter section 6.3. Wherein the first constant diameter section 6.1 is larger in diameter than the second constant diameter section 6.2. The first constant diameter section 6.1 extending to the outside of the pushing claw closed end surface is provided with a clamp spring groove 6.1.1, and a clamp spring 7 is fixed in the clamp spring groove 6.1.1. The pull rod 6 is also provided with an adjusting pad 8, and the adjusting pad 8 is positioned between the clamp spring 7 and the top end face 3.1 of the pushing claw. The second equal diameter section 6.2 and the expanded diameter section 6.3 are in contact with the inner side surface of the drag hook 5. The outside of pull rod 6 is provided with spring 9, and spring 9's one end is located spring mounting groove 3.1.2, and spring 9's the other end and the up end butt of locating part 4.1 in the direction body.
In order to enable the pull rod to move only in the axial direction, a sliding guide groove 6.1.2 is arranged in the first constant diameter section 6.1 of the pull rod at a position corresponding to the position of the mounting hole 4.1.2, and a guide body in the mounting hole is connected with the sliding guide groove in a sliding manner.
Because the toughness of the end part of the pull rod is poor, the pull rod is prevented from being damaged after being contacted with the drag hook for a plurality of times. One end of the pull rod 6 extending into the drag hook is fixed with a pull rod cone 10, and the rigidity of the pull rod cone is larger than that of the pull rod. As shown in fig. 9, in this embodiment, the pull rod cone 10 abuts against the inner side surface of the drag hook 5.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. The utility model provides a from locking-type draws horse which characterized in that: comprises a pull sleeve, a counter-force seat pressing ring positioned in the pull sleeve, a push claw positioned in the counter-force seat pressing ring, a guide body positioned in the push claw, a draw hook and a pull rod positioned in the guide body, wherein the pull sleeve, the counter-force seat pressing ring and the guide body are fixedly connected, a plurality of guide grooves are axially arranged on the guide body, guide sheets which are in matched connection with the guide grooves are arranged on the push claw, the bottom end face of each guide sheet is a wedge-shaped end face, the draw hook is positioned in the guide groove, the outer side face of the draw hook is a wedge-shaped end face, the outer side face of the draw hook is in matched connection with the bottom end face of each guide sheet, the draw rod is fixed with the push claw, one end of the draw rod extends to the position of the draw hook, the outer side face of the draw rod is in butt with the inner side face of the draw hook, a spring is arranged outside the draw rod, one end of the spring is in butt with the push claw, the other end of the spring is in butt with the guide body,
the guide body comprises a positioning part, a fixing part and a guide part, wherein a first shaft hole is formed in the positioning part, a mounting hole for mounting the guide body is formed in the side surface of the positioning part, the fixing part protrudes out of the positioning part and the guide part, the guide part is hollow, the guide groove is formed in the fixing part and the guide part and does not penetrate through the guide part, one end of the drag hook is abutted with the positioning part, the other end of the drag hook is abutted with the guide part,
the pull rod comprises a first equal-diameter section, a second equal-diameter section and an expanded-diameter section, the second equal-diameter section is abutted with the expanded-diameter section and the inner side surface of the drag hook,
the pull sleeve is of a disc-shaped structure, a first through hole is formed in the middle of the pull sleeve, and the first through hole sequentially comprises a first mounting groove, a second mounting groove and a third mounting groove from top to bottom; a first step is formed between the first mounting groove and the second mounting groove, a second step is formed between the second mounting groove and the third mounting groove, and a first screw fixing hole is formed in the second step;
the counter force seat pressing ring is also of a disc structure, and a second through hole is formed in the counter force seat pressing ring; the pushing claw is positioned in the second through hole in the counter-force seat pressing ring; the fixed part is positioned in the second mounting groove of the pull sleeve, the bottom surface of the fixed part is in butt joint with the top surface of the second step, and the screw penetrates through the first screw fixing hole of the pull sleeve, the guide groove of the fixed part and the second screw fixing hole of the counter-force seat pressing ring to fix the pull sleeve, the guide body and the counter-force seat pressing ring.
2. A self-locking puller as set forth in claim 1 wherein: the top end face of the pushing claw is closed, a second shaft hole is formed in the top end face, and a spring mounting groove is formed in the inner side of the top end face, close to the second shaft hole.
3. A self-locking puller as set forth in claim 2 wherein: the diameter of the first shaft hole is larger than that of the pull rod, and the diameter of the second shaft hole is equal to that of the pull rod.
4. A self-locking puller as set forth in claim 3 wherein: and a sliding guide groove is arranged in the first equal-diameter section corresponding to the mounting hole, and a guide body in the mounting hole is in sliding connection with the sliding guide groove.
5. A self-locking puller as set forth in claim 1 wherein: one end of the pull rod extending into the drag hook is fixed with a pull rod cone, and the pull rod cone is abutted with the inner side surface of the drag hook.
6. A self-locking puller as set forth in claim 1 wherein: one end of the pull rod extending to the outside of the pushing claw is provided with a clamp spring groove, a clamp spring is fixed in the clamp spring groove, an adjusting pad is further arranged on the pull rod, and the adjusting pad is located between the clamp spring and the pushing claw.
7. A self-locking puller as set forth in claim 1 wherein: the outside of drawing the cover is provided with a plurality of locating holes, be provided with the bush in the locating hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811087170.2A CN109176389B (en) | 2018-09-18 | 2018-09-18 | Self-locking type puller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811087170.2A CN109176389B (en) | 2018-09-18 | 2018-09-18 | Self-locking type puller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109176389A CN109176389A (en) | 2019-01-11 |
| CN109176389B true CN109176389B (en) | 2024-04-16 |
Family
ID=64911950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811087170.2A Active CN109176389B (en) | 2018-09-18 | 2018-09-18 | Self-locking type puller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109176389B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3611540A (en) * | 1969-07-28 | 1971-10-12 | Us Air Force | Seal puller |
| US4724608A (en) * | 1986-11-20 | 1988-02-16 | Parrott Ronald J W | Extractor tool for bearings, bushings and the like |
| US5255435A (en) * | 1992-10-14 | 1993-10-26 | Shultz William E | Apparatus and method for removing bearings |
| KR19980011243U (en) * | 1996-08-19 | 1998-05-25 | 김일수 | Drill chuck |
| DE202007007352U1 (en) * | 2007-05-23 | 2007-08-02 | Klann-Spezial-Werkzeugbau-Gmbh | Bearing and bush puller for vehicle has spreading grips with limited spreading drive |
| CN101020306A (en) * | 2007-02-25 | 2007-08-22 | 刘之增 | Pulling unit |
| CN102085650A (en) * | 2011-01-27 | 2011-06-08 | 东风朝阳柴油机有限责任公司 | Appliance special for dismounting valve seat ring of diesel engine cylinder cover |
| CN203019302U (en) * | 2012-12-13 | 2013-06-26 | 贵州高峰石油机械股份有限公司 | Piston taking-out device |
| CN209190658U (en) * | 2018-09-18 | 2019-08-02 | 上海天永智能装备股份有限公司 | A kind of self-locking drawing horse |
-
2018
- 2018-09-18 CN CN201811087170.2A patent/CN109176389B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3611540A (en) * | 1969-07-28 | 1971-10-12 | Us Air Force | Seal puller |
| US4724608A (en) * | 1986-11-20 | 1988-02-16 | Parrott Ronald J W | Extractor tool for bearings, bushings and the like |
| US5255435A (en) * | 1992-10-14 | 1993-10-26 | Shultz William E | Apparatus and method for removing bearings |
| KR19980011243U (en) * | 1996-08-19 | 1998-05-25 | 김일수 | Drill chuck |
| CN101020306A (en) * | 2007-02-25 | 2007-08-22 | 刘之增 | Pulling unit |
| DE202007007352U1 (en) * | 2007-05-23 | 2007-08-02 | Klann-Spezial-Werkzeugbau-Gmbh | Bearing and bush puller for vehicle has spreading grips with limited spreading drive |
| CN102085650A (en) * | 2011-01-27 | 2011-06-08 | 东风朝阳柴油机有限责任公司 | Appliance special for dismounting valve seat ring of diesel engine cylinder cover |
| CN203019302U (en) * | 2012-12-13 | 2013-06-26 | 贵州高峰石油机械股份有限公司 | Piston taking-out device |
| CN209190658U (en) * | 2018-09-18 | 2019-08-02 | 上海天永智能装备股份有限公司 | A kind of self-locking drawing horse |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109176389A (en) | 2019-01-11 |
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