CN102794629A - Pin puller - Google Patents
Pin puller Download PDFInfo
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- CN102794629A CN102794629A CN2012103126591A CN201210312659A CN102794629A CN 102794629 A CN102794629 A CN 102794629A CN 2012103126591 A CN2012103126591 A CN 2012103126591A CN 201210312659 A CN201210312659 A CN 201210312659A CN 102794629 A CN102794629 A CN 102794629A
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- slide block
- chamber
- convexity
- pin
- pause switch
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Abstract
The embodiment of the invention discloses a pin puller, and relates to the field of dismounting tools. The pin puller aims to solve the problems that when the existing pin puller is adopted to pull out a locating pin, the labor intensity of an operator is high, the pin pulling process is complicated, the efficiency is low, and hands are easily bruised and scratched. The pin puller comprises an upper cylinder cover, a lower cylinder cover, a barrel-shaped cylinder body, a pause switch, a spring, a sliding block and a connection bolt. During the course of pulling out the locating pin, the connection bolt is connected with the locating pin to be pulled out; and under the action of the air pressure difference between the two ends of the cylinder body, the sliding block moves in the axial direction of the cylinder body and between the upper cylinder cover and the lower cylinder cover, so that the entire pin puller is driven to move towards the upper cylinder cover as the sliding block moves towards the upper cylinder cover rapidly, and the purpose of pulling out the locating pin is achieved. The situations that when the existing pin puller is adopted to pull out the locating pin, the labor intensity of the operator is high, the pin pulling process is complicated, the efficiency is low, and the hands are easily bruised and scratched are avoided.
Description
Technical field
The present invention relates to the extracting tool field, relate in particular to a kind of pin removal.
Background technology
The alignment pin of in frock, anchor clamps, using is used for playing the effect of locating element, and after accomplishing location tasks, the alignment pin that needs usually to use pin removal will sink in the part locating hole is extracted.
As shown in Figure 1; Sketch map for pin removal of the prior art; Comprise overhead gage 11 and the connecting rod 12 that is fixedly connected with it; Connecting rod 12 1 ends have external screw thread, are used for and alignment pin 15 screw-internal thread fit on axially, also comprise being set on the connecting rod 12 slide block 13 that can be free to slide along connecting rod and being installed in the lower baffle plate 14 on the connecting rod.When pulling pin; Connecting rod 12 is had internal thread one end screw in the internal thread of alignment pin 15 on axially, after the two closely cooperates, hold slide block 13; From lower baffle plate 14 to the overhead gage 11 folk prescriptions fast moving slide block 13 that makes progress, take alignment pin 15 out of through the slide block 13 and the bump of overhead gage 11.
When adopting above-mentioned pin removal to extract alignment pin, owing to be the process of pulling pin of leaning on manual fast moving slide block to accomplish, so labor intensity of operating personnel is big; And the process of pulling pin complicacy, the efficient of pulling pin are low; In addition, be prone to damage, scratch the situation of operating personnel's hand during the manual movement slide block.
Summary of the invention
Embodiments of the invention provide a kind of pin removal, have solved when adopting pin removal to extract the operation of alignment pin, and labor intensity of operating personnel is big, the process of pulling pin complicacy, low, the easy situation of damaging, scratching hand of efficient.
For achieving the above object, embodiments of the invention adopt following technical scheme:
A kind of pin removal comprises: upper cylinder cover; Following cylinder cap; Between said upper cylinder cover, said down cylinder cap, and by the tubular cylinder body of said upper cylinder cover, the sealing of said cylinder cap down; Be positioned at pause switch, spring, the slide block of said cylinder body; It is outer and be fixedly arranged on the connecting bolt on the said cylinder cap down to be positioned at said cylinder body; Said upper cylinder cover has first convexity, and said pause switch is set on said first convexity; One end of said spring is fixedly arranged on the said pause switch, and the other end is against said upper cylinder cover; Said slide block is located at said pause switch and said down between the cylinder cap; Said shoe surface is provided with second protruding and the 3rd convexity; Said second protruding and the 3rd protruding axially being arranged side by side along said slide block; Said second protruding and said the 3rd convexity hermetic cooperates with the inwall of said cylinder body; Between said second convexity and said upper cylinder cover, to form the first airtight chamber, at the said the 3rd protruding and said second airtight chamber of formation between the cylinder cap down; Said upper cylinder cover is provided with said first air inlet, is used for feeding Compressed Gas according to the control of said pause switch to said first chamber, and said cylinder cap down is provided with second air inlet, is used for feeding Compressed Gas to said second chamber; Said slide block is promoted along said Boring mill between the primary importance and the second place, moving back and forth by the draught head between said first chamber and said second chamber; On the cylinder wall between said pause switch and the said following cylinder cap, be provided with steam vent, when said slide block was positioned at said primary importance, said steam vent was communicated with said first chamber; On the cylinder wall between said pause switch and the said following cylinder cap, be provided with spacing hole, when said slide block was positioned at the said second place, said spacing hole was communicated with said second chamber; The free end of said connecting bolt has and waits to pull out the external screw thread of screw-internal thread fit on the alignment pin.
Preferably, described pin removal also comprises coupling assembling, and said connecting bolt is fixedly arranged on the said cylinder cap down through said coupling assembling; Said coupling assembling comprises: be installed in tight fixed bolt, first nut on the said down cylinder cap, be installed with second nut in said first nut; One end and the said tight fixed bolt of said first nut are spirally connected; The other end of said first nut has through hole; And the diameter of said through hole is less than the diameter of said screw and less than the maximum appearance and size of said second nut; Be used to pass said connecting bolt, said connecting bolt is spirally connected near said cylinder cap one end down and said second nut.
Wherein, said upper cylinder cover and said down cylinder cap are that bolt is connected with connected mode between the said cylinder body.
Preferably, the number of said steam vent is four, circumferentially evenly arranges along said cylinder body.
Preferably, be provided with piston ring between said second convexity and said the 3rd convexity, said piston ring hermetic cooperates with the inwall of said cylinder body.
Wherein, Said slide block has the 4th convexity; Said the 4th convexity is between said second protruding and said the 3rd convexity, and said piston ring has two pairs, lays respectively between the said the 4th protruding and said second convexity and between said the 4th convexity and said the 3rd convexity.
Preferably, said slide block is provided with first depressed part near said cylinder cap one end down.
Preferably, said slide block is provided with second depressed part near an end of said upper cylinder cover, is used for the said pause switch of holding portion, and said slide block has groove near the part of an end except that said second depressed part of said upper cylinder cover.
Wherein, the inwall of said cylinder body has positive stop lug boss, and when said pause switch is positioned at when treating trigger position, said pause switch is against said positive stop lug boss.
In the pin removal that the embodiment of the invention provides, pull out alignment pin and pull pin when operation when treating, slide block will be under compressed-air actuated promotion; Along Boring mill to moving towards the upper cylinder cover direction; Slide block moves to the second place always, owing on the cylinder wall between pause switch and the following cylinder cap, be provided with spacing hole, and when slide block is positioned at the second place; Spacing hole is communicated with second chamber, can the compressed air in second chamber be discharged in the air through spacing hole.First air admission hole is opened, and compressed air feeds first chamber through first air admission hole, cause first chamber pressure to raise, and second chamber pressure reduces and produces draught head, thereby slide block will be moved by the second place to primary importance.Along with the motion of slide block, first air inlet stops air inlet, and spacing hole is not communicated with second chamber.The gas of second chamber is compressed, and arrives primary importance and form high-pressure space gradually up to slide block, owing on the cylinder wall between pause switch and the following cylinder cap, be provided with steam vent; When slide block is positioned at primary importance; Steam vent is communicated with first chamber, can the compressed air in first chamber be discharged in the air, and the air pressure in first chamber reduces rapidly; And formed high-pressure space in second chamber; Pressure differential between second cavity and first cavity makes slide block drive said pin removal integral body towards the motion of upper cylinder cover direction to the motion of upper cylinder cover direction rapidly, thereby reaches the purpose of extracting alignment pin.During the operation having avoided adopting existing pin removal to extract alignment pin, labor intensity of operating personnel is big, the generation that the process of pulling pin complicacy, efficient be low, be prone to damage, scratch situation such as hand.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the sketch map of a kind of pin removal in the prior art;
The sketch map of slide block when the second place in a kind of pin removal that Fig. 2 provides for the embodiment of the invention;
The sketch map of slide block when primary importance in a kind of pin removal that Fig. 3 provides for the embodiment of the invention;
The sketch map of the another kind of pin removal that Fig. 4 provides for the embodiment of the invention.
The specific embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, the every other embodiment that those of ordinary skills are obtained under the prerequisite of not making creative work belongs to the scope that the present invention protects.
The embodiment of the invention provides a kind of pin removal; As shown in Figure 2, comprising: upper cylinder cover 21, down cylinder cap 25, the tubular cylinder body 22, the pause switch 23 that is positioned at cylinder body 22, spring 210, the slide block 24 that between upper cylinder cover 21 and following cylinder cap 25 and by upper cylinder cover 21 and following cylinder cap 25, seal, be positioned at outside the cylinder body 22 and be fixedly arranged on the connecting bolt 26 on the following cylinder cap 25.
In the pin removal that the embodiment of the invention provides, as shown in Figures 2 and 3, because said pin removal has constituted sealing integral body by upper cylinder cover 21, following cylinder cap 25 and tubular cylinder body 22.Following cylinder cap 25 is provided with second air inlet 250, is used for feeding Compressed Gas to the second chamber b, and the compressed air that feeds the second chamber b can promote slide block 24 and move to upper cylinder cover 21 directions.Upper cylinder cover 21 is provided with first air inlet 212, can be used for feeding Compressed Gas according to the control of said pause switch to the first chamber a, and the compressed air that feeds the first chamber a can play a role in promoting to slide block 24.Said pin removal also comprises pause switch 23, spring 210, the slide block 24 that is positioned at cylinder body 22 and is positioned at cylinder body 22 outer and be fixedly arranged on down the connecting bolt 26 on the cylinder cap 25.
Because upper cylinder cover 21 has first convexity 211, pause switch 23 is set on first protruding 211, makes pause switch 23 to move axially at the first protruding 211 upper edge cylinder bodies 22; One end of spring 210 is fixedly arranged on the pause switch 23, and the other end is against upper cylinder cover 21; When pause switch 23 when upper cylinder cover 21 directions move, spring 210 is compressed, and when spring 210 stretches, will produce elastic force, this elastic force will promote pause switch 23 and move towards the direction that deviates from upper cylinder cover 21.
Pull out alignment pin and pull pin when operation when treating, the free end with connecting bolt 26 is threaded with alignment pin to be pulled out earlier, again to second air admission hole, 50 feeding compressed air; Slide block 24 will be under compressed-air actuated promotion; Axially move towards upper cylinder cover 21 directions along cylinder body 22, when slide block 24 contacts with pause switch 23, slide block 24 promotes pause switches 23 and moves towards the direction of upper cylinder cover 21 along first protruding 211; Spring 210 is compressed in this course; Slide block 24 moves to second place B always, owing on cylinder body 22 walls between pause switch 23 and the following cylinder cap 25, be provided with spacing hole 220, and when slide block 24 is positioned at second place B; Spacing hole 220 is communicated with the second chamber b, and pause switch 23 is opened simultaneously.Can the compressed air in the second chamber b be discharged in the air through spacing hole 220.When slide block 24 is positioned at second place b; Because pause switch 23 is opened, to control first air admission hole 12 and open, compressed air feeds the first chamber a through first air admission hole 12; Cause the first chamber a air pressure to raise; And the second chamber b air pressure reduces, and therefore between the first chamber a and the second chamber b generation draught head is arranged, thereby slide block 24 will be moved by second place B to primary importance A.
In the pin removal that the embodiment of the invention provides, pull out alignment pin and pull pin when operation when treating, slide block will be under compressed-air actuated promotion; Along Boring mill to moving towards the upper cylinder cover direction; Slide block moves to the second place always, owing on the cylinder wall between pause switch and the following cylinder cap, be provided with spacing hole, and when slide block is positioned at the second place; Spacing hole is communicated with second chamber, can the compressed air in second chamber be discharged in the air through spacing hole.First air admission hole is opened, and compressed air feeds first chamber through first air admission hole, cause first chamber pressure to raise, and second chamber pressure reduces and produces draught head, thereby slide block will be moved by the second place to primary importance.Along with the motion of slide block, first air inlet stops air inlet, and spacing hole is not communicated with second chamber.The gas of second chamber is compressed, and arrives primary importance and form high-pressure space gradually up to slide block, owing on the cylinder wall between pause switch and the following cylinder cap, be provided with steam vent; When slide block is positioned at primary importance; Steam vent is communicated with first chamber, can the compressed air in first chamber be discharged in the air, and the air pressure in first chamber reduces rapidly; And formed high-pressure space in second chamber; Pressure differential between second cavity and first cavity makes slide block drive said pin removal integral body towards the motion of upper cylinder cover direction to the motion of upper cylinder cover direction rapidly, thereby reaches the purpose of extracting alignment pin.During the operation having avoided adopting existing pin removal to extract alignment pin, labor intensity of operating personnel is big, the generation that the process of pulling pin complicacy, efficient be low, be prone to damage, scratch situation such as hand.
The pin removal that the foregoing description provides also can comprise coupling assembling, and is as shown in Figure 4, and connecting bolt 26 is fixedly arranged on down on the cylinder cap 25 through said coupling assembling.Said coupling assembling comprises: be installed in down tight fixed bolt 43 on the cylinder cap 25, first nut 44, be installed with second nut 45 in first nut 44.One end and the tight fixed bolt 43 of first nut 44 are spirally connected; The other end of first nut 44 has through hole 442; And the diameter of through hole 442 is less than the diameter of screw 441 and less than the maximum appearance and size of second nut 45; Be used to pass connecting bolt 26, connecting bolt 26 is near cylinder cap 25 1 ends and second nut 45 are spirally connected down.
Need to prove: the assembly of same structure has identical Reference numeral among Fig. 2 to Fig. 4.
Because connecting bolt 26 is fixedly arranged on down on the cylinder cap 25 through said coupling assembling; And said coupling assembling comprises: be installed in down tight fixed bolt 43 on the cylinder cap 25, first nut 44, be installed with second nut 45 in first nut 44; Tight fixed bolt 43 becomes one structure with said pin removal; And an end and the tight fixed bolt 43 of first nut 44 are spirally connected, and the other end of first nut 44 has logical 702 holes, and the diameter of through hole 442 is less than the diameter of screw 441 and less than the maximum appearance and size of second nut 45; Screw 441 can hold second nut 45; And can guarantee that second nut 45 can not come off in screw 441, through hole 442 is used to pass connecting bolt 26, and connecting bolt 26 is near cylinder cap 25 1 ends and second nut 45 are spirally connected down.
When using said pin removal to pull out alignment pin, can earlier second nut 45 be connected with connecting bolt 26, again second nut 45 is installed with in screw 441, afterwards connecting bolt 26 is connected with alignment pin to be pulled out, again tight fixed bolt 43 is connected with screw 441.When needs adjustment pin removal and wait to pull out between the alignment pin apart from the time; Only need tight fixed bolt 43 is screwed in or screw out first nut 44; Need not directly to move said pin removal; Can directly move said pin removal, just can realize waiting to pull out the adjustable function of distance between alignment pin and the said pin removal.
In the foregoing description, upper cylinder cover 21 and down cylinder cap 25 can be connected for bolt with connected mode between the cylinder body 22.Wherein, bolt connects and can dismantle, and is convenient to the M R to cylinder body 22 and internals.
In the foregoing description, the number of steam vent 221 can be four, circumferentially evenly arranges along cylinder body 22.
Because the number of steam vent 221 is four; Circumferentially evenly arrange along cylinder body 22; Compressed Gas in the first chamber a is discharged fast, the interior gas pressure of the first chamber a is descended rapidly, thereby make the gas in the first chamber a and the second chamber b form pressure differential greatly fast.
Certainly, the number of steam vent is not limited to four, also can be can guarantee what the interior Compressed Gas of first chamber was discharged fast, other quantity that those skilled in the art knew.
Referring to Fig. 4, in the pin removal that the embodiment of the invention provides, can be provided with piston ring 41 between second the protruding the 240 and the 3rd protruding 241, piston ring 41 hermetic cooperates with the inwall of cylinder body 22.
Because piston ring 41 hermetic cooperates with the inwall of cylinder body 22.Piston ring 41 can guarantee good air tightness between slide block 24 and cylinder body 22 inwalls, the anti-limited slip block 24 long-time wearing and tearing initiation gas leak phenomenons that produce with cylinder body 22 inwall contact frictions.When cylinder body 22 inner poor air-tightness, only need more rering 41 and need not to change slide block 24.
In the foregoing description; Slide block 24 can have the 4th protruding 42; The the 4th protruding 42 between second the protruding the 240 and the 3rd protruding 241, and piston ring 41 can have two pairs, lays respectively between the 4th protruding 42 and second convexity 240 and between the 4th the protruding the 42 and the 3rd protruding 241.
Through two pairs of piston rings 41 are set, guaranteed better airtight effect between the cylinder body 22 inner first chamber a and the second chamber b.
In the pin removal that the foregoing description provides, slide block 24 can be provided with first depressed part 47 near following cylinder cap 25 1 ends.Because slide block 24 is provided with first depressed part 47 near following cylinder cap 25 1 ends, can make the second chamber b hold more gas, the more gas in the second chamber b is compressed, and makes slide block 24 obtain bigger thrust thereby can produce bigger high pressure.
Wherein, slide block 24 is provided with second depressed part 46 near an end of upper cylinder cover 21, is used for holding portion pause switch 23, and slide block 24 has groove 48 near the part of an end except that second depressed part 46 of upper cylinder cover 21.
Because slide block 24 is provided with second depressed part 46 near an end of upper cylinder cover 21; Be used for holding portion pause switch 23; Slide block 24 has groove 48 near the part of an end except that second depressed part 46 of upper cylinder cover 21; So the gas in the first chamber a can pass through groove 48, to increase the surface area that gas contacts with slide block 24.
In the pin removal that the embodiment of the invention provides, the inwall of cylinder body 22 can have positive stop lug boss 40, and when pause switch 23 is positioned at when treating trigger position, pause switch 23 is against positive stop lug boss 40.
Because cylinder body 22 inwalls have positive stop lug boss 40; When pause switch 23 is positioned at when treating trigger position, pause switch 23 is against positive stop lug boss 40, can prevent that pause switch 23 from crossing the position; If pause switch 23 is crossed the position; In the time of can causing slide block 24 not move to second place B, just open pause switch 23 too early, the second chamber b does not also get into enough gas; Just cylinder cap 25 directions motion down under the promotion of gas in the first chamber a of slide block 24, thus cause in the second chamber b compressed gas flow few and can not produce enough high pressure.
The above; Be merely the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technical staff who is familiar with the present technique field is in the technical scope that the present invention discloses; The variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of said claim.
Claims (9)
1. a pin removal is characterized in that, comprising: upper cylinder cover; Following cylinder cap; Between said upper cylinder cover, said down cylinder cap, and by the tubular cylinder body of said upper cylinder cover, the sealing of said cylinder cap down; Be positioned at pause switch, spring, the slide block of said cylinder body; It is outer and be fixedly arranged on the connecting bolt on the said cylinder cap down to be positioned at said cylinder body;
Said upper cylinder cover has first convexity, and said pause switch is set on said first convexity; One end of said spring is fixedly arranged on the said pause switch, and the other end is against said upper cylinder cover;
Said slide block is located at said pause switch and said down between the cylinder cap; Said shoe surface is provided with second protruding and the 3rd convexity; Said second protruding and the 3rd protruding axially being arranged side by side along said slide block; Said second protruding and said the 3rd convexity hermetic cooperates with the inwall of said cylinder body; Between said second convexity and said upper cylinder cover, to form the first airtight chamber, at the said the 3rd protruding and said second airtight chamber of formation between the cylinder cap down;
Said upper cylinder cover is provided with said first air inlet, is used for feeding Compressed Gas according to the control of said pause switch to said first chamber, and said cylinder cap down is provided with second air inlet, is used for feeding Compressed Gas to said second chamber; Said slide block is promoted along said Boring mill between the primary importance and the second place, moving back and forth by the draught head between said first chamber and said second chamber;
On the cylinder wall between said pause switch and the said following cylinder cap, be provided with steam vent, when said slide block was positioned at said primary importance, said steam vent was communicated with said first chamber;
On the cylinder wall between said pause switch and the said following cylinder cap, be provided with spacing hole, when said slide block was positioned at the said second place, said spacing hole was communicated with said second chamber;
The free end of said connecting bolt has and waits to pull out the external screw thread of screw-internal thread fit on the alignment pin.
2. pin removal according to claim 1 is characterized in that, also comprises coupling assembling, and said connecting bolt is fixedly arranged on the said cylinder cap down through said coupling assembling;
Said coupling assembling comprises: be installed in tight fixed bolt, first nut on the said down cylinder cap, be installed with second nut in said first nut;
One end and the said tight fixed bolt of said first nut are spirally connected; The other end of said first nut has through hole; And the diameter of said through hole is less than the diameter of said screw and less than the maximum appearance and size of said second nut; Be used to pass said connecting bolt, said connecting bolt is spirally connected near said cylinder cap one end down and said second nut.
3. pin removal according to claim 1 is characterized in that, said upper cylinder cover and said down cylinder cap are that bolt is connected with connected mode between the said cylinder body.
4. pin removal according to claim 1 is characterized in that, the number of said steam vent is four, circumferentially evenly arranges along said cylinder body.
5. pin removal according to claim 1 is characterized in that, is provided with piston ring between said second convexity and said the 3rd convexity, and said piston ring hermetic cooperates with the inwall of said cylinder body.
6. pin removal according to claim 5; It is characterized in that; Said slide block has the 4th convexity; Said the 4th convexity is between said second protruding and said the 3rd convexity, and said piston ring has two pairs, lays respectively between the said the 4th protruding and said second convexity and between said the 4th convexity and said the 3rd convexity.
7. pin removal according to claim 1 is characterized in that, said slide block is provided with first depressed part near said cylinder cap one end down.
8. pin removal according to claim 1; It is characterized in that; Said slide block is provided with second depressed part near an end of said upper cylinder cover, is used for the said pause switch of holding portion, and said slide block has groove near the part of an end except that said second depressed part of said upper cylinder cover.
9. pin removal according to claim 1 is characterized in that the inwall of said cylinder body has positive stop lug boss, and when said pause switch is positioned at when treating trigger position, said pause switch is against said positive stop lug boss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210312659.1A CN102794629B (en) | 2012-08-29 | 2012-08-29 | Pin puller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210312659.1A CN102794629B (en) | 2012-08-29 | 2012-08-29 | Pin puller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102794629A true CN102794629A (en) | 2012-11-28 |
| CN102794629B CN102794629B (en) | 2014-07-30 |
Family
ID=47194064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210312659.1A Active CN102794629B (en) | 2012-08-29 | 2012-08-29 | Pin puller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102794629B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108857342A (en) * | 2018-08-13 | 2018-11-23 | 上海宝骜工业技术服务有限公司 | A kind of Pneumatic pin puller |
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|---|---|---|---|---|
| CN2417969Y (en) * | 2000-01-31 | 2001-02-07 | 上海宝钢集团公司 | Hydraulic pin-pulling-out device |
| CN2724932Y (en) * | 2004-07-28 | 2005-09-14 | 宝山钢铁股份有限公司 | Multifunction pin puller |
| CN2734428Y (en) * | 2004-09-09 | 2005-10-19 | 扬动股份有限公司 | Quick-release pin puller |
| CN2930991Y (en) * | 2006-06-12 | 2007-08-08 | 上海三一科技有限公司 | Oil cylinder with pin |
| CN102152100A (en) * | 2011-04-28 | 2011-08-17 | 长沙中联重工科技发展股份有限公司 | Pull pin device |
| CN102328197A (en) * | 2011-05-30 | 2012-01-25 | 泰安力博机电科技有限公司 | Hydraulic automatic pin pulling device |
| CN101927429B (en) * | 2010-08-28 | 2012-05-09 | 淄博矿业集团有限责任公司 | Double-cylinder hydraulic pin remover |
| KR101156211B1 (en) * | 2011-12-16 | 2012-06-18 | 주식회사 티프렌즈 | The pin remover |
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2012
- 2012-08-29 CN CN201210312659.1A patent/CN102794629B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2417969Y (en) * | 2000-01-31 | 2001-02-07 | 上海宝钢集团公司 | Hydraulic pin-pulling-out device |
| CN2724932Y (en) * | 2004-07-28 | 2005-09-14 | 宝山钢铁股份有限公司 | Multifunction pin puller |
| CN2734428Y (en) * | 2004-09-09 | 2005-10-19 | 扬动股份有限公司 | Quick-release pin puller |
| CN2930991Y (en) * | 2006-06-12 | 2007-08-08 | 上海三一科技有限公司 | Oil cylinder with pin |
| CN101927429B (en) * | 2010-08-28 | 2012-05-09 | 淄博矿业集团有限责任公司 | Double-cylinder hydraulic pin remover |
| CN102152100A (en) * | 2011-04-28 | 2011-08-17 | 长沙中联重工科技发展股份有限公司 | Pull pin device |
| CN102328197A (en) * | 2011-05-30 | 2012-01-25 | 泰安力博机电科技有限公司 | Hydraulic automatic pin pulling device |
| KR101156211B1 (en) * | 2011-12-16 | 2012-06-18 | 주식회사 티프렌즈 | The pin remover |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108857342A (en) * | 2018-08-13 | 2018-11-23 | 上海宝骜工业技术服务有限公司 | A kind of Pneumatic pin puller |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102794629B (en) | 2014-07-30 |
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