CN204647275U - A kind of piston structure - Google Patents
A kind of piston structure Download PDFInfo
- Publication number
- CN204647275U CN204647275U CN201520348337.1U CN201520348337U CN204647275U CN 204647275 U CN204647275 U CN 204647275U CN 201520348337 U CN201520348337 U CN 201520348337U CN 204647275 U CN204647275 U CN 204647275U
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- China
- Prior art keywords
- piston
- sleeve
- plunger
- boss
- circular groove
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- Expired - Fee Related
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Abstract
The utility model provides a kind of piston structure, belongs to piston technical field; It solve existing poor stability, technical problem that mobile accuracy is low; The technical solution of the utility model is: a kind of piston structure, comprise piston sleeve and piston rod, piston rod outer surface is provided with the first plunger, piston rod is divided into piston fixing rod and piston pin by the first plunger, shot sleeve is stretched out in piston fixing rod one end, piston pin is positioned at piston sleeve and piston pin can be against on piston sleeve, piston fixing rod external diameter is identical with piston pin external diameter, also piston cylinder is provided with in piston sleeve outside, piston sleeve runs through piston cylinder, and piston sleeve is mobile on the piston rod also can drive piston cylinder to move; Effective work area of two chambers that the first plunger separates is equal, and piston thrust is in the two directions identical with speed, makes piston rod movable more stable, and mobile also do not exist range difference, and mobile accuracy is also higher.
Description
Technical field
The utility model belongs to piston technical field, relates to a kind of piston structure.
Background technique
Piston structure is a kind of common power mechanism, and it is as power source, and can export straight line, stable power to object, it is widely used in various machinery.
Traditional piston structure comprises single-rod piston structure and through-rod piston structure, and single-rod piston structure is applicable to unidirectional drive, and through-rod piston structure is applicable to bi-directional drive, and existing piston structure is mainly based on the single-rod piston structure of unidirectional drive.
Existing single-rod piston structure mainly comprises piston cylinder, piston is provided with in piston cylinder, one end of piston is provided with piston rod, piston cylinder is stretched out in piston rod one end, oil inlet hole is offered respectively at the two ends of piston cylinder, by one of them oil inlet hole oil-feed, another oil inlet hole is fuel-displaced, realize piston to move in piston cylinder, and piston rod is moved, thus formation driving force, there is following technical problem in this piston structure, 1, because one end of piston is connected with piston rod, and the other end is plane, therefore, effective work area of two chambers separated by piston in piston cylinder is not etc., piston thrust in the two directions and speed all different, cause piston rod movable unstable, mobile exist range difference, mobile accuracy is poor, 2, traditional piston structure, piston cylinder is fixing, is moved in piston cylinder by piston, thus piston rod moves, and compare piston cylinder, the diameter of piston rod is less, and it is as actuator, when displacement distance is longer, time mobile stability and balance all poor, mobile efficiency is lower.
In sum, in order to solve the technical problem of above-mentioned piston mechanism, need to design the piston structure that a kind of the moving stability is better, mobile accuracy is high, drive efficiency is high.
Model utility content
The purpose of this utility model is the problems referred to above existed for prior art, proposes the piston structure that a kind of the moving stability is better, mobile accuracy is high, drive efficiency is high.
The purpose of this utility model realizes by following technical proposal: a kind of piston structure, comprise piston sleeve and the piston rod be arranged in piston sleeve, the first plunger being positioned at piston sleeve is provided with at piston rod outer surface, piston rod is divided into piston fixing rod and piston pin by described first plunger, shot sleeve is stretched out in piston fixing rod one end, piston pin is positioned at piston sleeve and piston pin can be against on piston sleeve, described piston fixing rod external diameter is identical with piston pin external diameter, also piston cylinder is provided with in piston sleeve outside, described piston sleeve runs through piston cylinder, described piston sleeve is mobile on the piston rod also can drive piston cylinder to move.
In above-mentioned a kind of piston structure, piston cylinder madial wall is provided with annular groove, the first boss and the second boss is formed respectively at annular groove two ends, described piston sleeve outer surface is provided with the second plunger, when piston sleeve moves, described second plunger moves in annular groove and the second plunger to be against respectively on the first boss and the second boss and to drive piston cylinder to move.
In above-mentioned a kind of piston structure, described piston cylinder comprises front-bank rotor housing and rear-bank rotor housing, described first boss is arranged at front-bank rotor housing one end and is formed with the first position limit cycle, described second boss is arranged at rear-bank rotor housing one end and is formed with the second position limit cycle, guide pin bushing is provided with between front-bank rotor housing and rear-bank rotor housing, described guide pin bushing two ends lay respectively at the first boss and contact with the second position limit cycle with the first position limit cycle respectively with on the second boss, are formed with described annular groove between described guide pin bushing and the first boss, the second boss.
In above-mentioned a kind of piston structure, described first plunger ring laterally offers multiple first circular groove around its outer surface, and described first circular groove is axial distribution, is provided with the first seal ring in the first circular groove.
In above-mentioned a kind of piston structure, described second plunger ring laterally offers multiple second circular groove around its outer surface, and described second circular groove is axial distribution, is provided with the second seal ring in the second circular groove.
In above-mentioned a kind of piston structure, first position limit cycle madial wall offers the 3rd circular groove, in the 3rd circular groove, be provided with the 3rd seal ring, the second position limit cycle madial wall offers the 4th circular groove, in the 4th circular groove, be provided with the 4th seal ring.
Compared with prior art, the utility model has following beneficial effect:
1, in the utility model, piston rod is divided into piston fixing rod and piston pin by the first plunger, piston fixing rod is identical with the external diameter of piston pin, the lifting surface area at the first plunger two ends is identical, and therefore, effective work area of two chambers separated by the first plunger is equal, piston thrust is in the two directions identical with speed, make piston rod movable more stable, mobile also do not exist range difference, and mobile accuracy is also higher.
2, piston rod is divided into piston fixing rod and piston pin, piston fixing rod and driven object are connected, make piston rod entirety fixing, and piston sleeve moves relative to piston rod, fixed by piston rod, piston sleeve moves in piston cylinder, under the positioning action of piston cylinder, better, mobile efficiency is higher for its moving stability and balance.
3, in addition, this piston structure is moved by piston sleeve thus drives piston cylinder to move, and drives driven object to move by piston cylinder, realizes two-stage drive, and two-stage drive compares one-level driving, and it more easily controls stroke and precision.
Accompanying drawing explanation
Fig. 1 is the generalized section of the utility model one preferred embodiment.
In figure, 100, piston rod; 110, the first plunger; 111, the first circular groove; 120, piston fixing rod; 130, piston pin; 200, piston sleeve; 210, piston cavity; 220, the second plunger; 221, the second circular groove; 300, piston cylinder; 310, front-bank rotor housing; 311, the first boss; 312, the first position limit cycle; 313, the 3rd circular groove; 320, rear-bank rotor housing; 321, the second boss; 322, the second position limit cycle; 323, the 4th circular groove; 330, guide pin bushing; 331, loop wire chute.
Embodiment
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As shown in Figure 1, a kind of piston structure, comprise piston rod 100, piston sleeve 200 and piston cylinder 300, there is in piston sleeve 200 piston cavity 210, piston rod 100 part is positioned at piston cavity 210, the first plunger 110 being positioned at piston cavity 210 is provided with at piston rod 100 outer surface, piston rod 100 is divided into piston fixing rod 120 and piston pin 130 by this first plunger 110, piston cavity 210 is stretched out in piston fixing rod 120 one end, the external part of piston fixing rod 120 is connected with other component as fixed end, piston pin 130 is whole is positioned at piston cavity 210, piston fixing rod 120 external diameter is identical with piston pin 130 external diameter, when in piston cavity 210 during supercharging, first plunger 110 is mobile in piston cavity 210, piston sleeve 200 is moved around on piston rod 100, in this case, because piston fixing rod 120 is identical with the external diameter of piston pin 130, therefore, the lifting surface area of two end faces of the first plunger 110 is identical, and, effective work area of two chambers separated by the first plunger 110 is also equal, piston thrust is in the two directions identical with speed, make piston rod 100 movable more stable, mobile also do not exist range difference, mobile accuracy is also higher
Piston cylinder 300 is also provided with in piston sleeve 200 outside, described piston sleeve 200 runs through piston cylinder 300, described piston cylinder 300 comprises the front-bank rotor housing 310 and rear-bank rotor housing 320 that separate, front-bank rotor housing 310 one end is provided with the first boss 311, this first boss 311 makes front-bank rotor housing 310 to be formed with the first position limit cycle 312 axially arranged, rear-bank rotor housing 320 one end is provided with the second boss 321, this second boss 321 makes rear-bank rotor housing 320 to be formed with the second position limit cycle 322 axially arranged, guide pin bushing 330 is provided with between front-bank rotor housing 310 and rear-bank rotor housing 320, the two ends of guide pin bushing 330 lay respectively at the first boss 311 and are also connected with the second position limit cycle 322 with the first position limit cycle 312 respectively with on the second boss 321, at guide pin bushing 330 and the first boss 311, annular groove 331 is formed between the second boss 321, piston sleeve 200 outer surface is provided with the second plunger 220, when piston sleeve 200 moves, described second plunger 220 mobile and second plunger 220 in annular groove 331 to be against respectively on the first boss 311 and the second boss 321 and to drive piston cylinder 300 to move, and the outside of guide pin bushing 330 is connected with driven parts, when piston sleeve 200 moves on piston rod 100, piston sleeve 200 can drive piston cylinder 300 to move, realize the mechanical transmission to parts, fixed by piston rod 100, piston sleeve 200 is mobile in piston cylinder 300, under the positioning action of piston cylinder 300, its the moving stability and balance better, mobile efficiency is higher.
It is worth mentioning that, this piston structure is moved by piston sleeve 200 thus drives piston cylinder 300 to move, and drives driven object to move by piston cylinder 300, realizes two-stage drive, and two-stage drive compares one-level driving, it more easily controls stroke and precision.
As improvement, described first plunger 110 laterally offers multiple first circular groove 111 around its outer surface, and described first circular groove 111, in axial distribution, is provided with the first seal ring (not shown) in the first circular groove 111.
Piston sleeve 200 movement on piston rod 100 is the main power source of this piston structure, and the sealing effect of piston cavity 210 directly affects size and the performance of main power source, by arranging the first seal ring, ensure that the sealing of the first plunger 110 and piston cavity 210 madial wall, make piston cavity 210 when supercharging, first plunger 110 can move normally in piston cavity 210, to ensure to provide normal power to driven parts, avoid causing power greatly to reduce because of piston cavity 210 seepage, and the first seal ring can effectively be fixed by arranging of the first circular groove 111, prevent the first seal ring from coming off.
As further improvement, the second plunger 220 laterally offers multiple second circular groove 221 around its outer surface, and described second circular groove 221, in axial distribution, is provided with the second seal ring (not shown) in the second circular groove 221.
When second plunger 220 moves with piston sleeve 200, piston cylinder 300 can be driven to move, and the parts be connected with piston cylinder 300 can be driven to move, therefore, sealing between the second plunger 220 and guide pin bushing 330 directly affects the travelling performance of piston cylinder 300, at the second plunger 220 outer surface, the second seal ring is set, effectively ensure that sealing good between the second plunger 220 and guide pin bushing 330, ensure that piston cylinder 300 is with piston sleeve 200 movement normally simultaneously, and the setting of the second circular groove 221, also the second seal ring is limited on the second plunger 220, prevent the second plunger 220 from coming off.
As further improving, first position limit cycle 312 madial wall offers the 3rd circular groove 313, the 3rd seal ring (not shown) is provided with in the 3rd circular groove 313, second position limit cycle 322 madial wall offers the 4th circular groove 323, in the 4th circular groove 323, is provided with the 4th seal ring (not shown).
Because guide pin bushing 330 is connected with rear-bank rotor housing 320 with front-bank rotor housing 310, second plunger 220 slides on guide pin bushing 330 madial wall, and driven parts move on guide pin bushing 330 outer surface, therefore, guide pin bushing 330 and can gap be produced between front-bank rotor housing 310 and rear-bank rotor housing 320, by increasing the 3rd seal ring and the 4th seal ring, effectively avoiding leaking between guide pin bushing 330 and the 3rd seal ring, the 4th seal ring, further ensuring sealing good in annular groove 331.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Claims (6)
1. a piston structure, comprise piston sleeve and the piston rod be arranged in piston sleeve, it is characterized in that: be provided with the first plunger being positioned at piston sleeve at piston rod outer surface, piston rod is divided into piston fixing rod and piston pin by described first plunger, shot sleeve is stretched out in piston fixing rod one end, piston pin is positioned at piston sleeve and piston pin can be against on piston sleeve, described piston fixing rod external diameter is identical with piston pin external diameter, also piston cylinder is provided with in piston sleeve outside, described piston sleeve runs through piston cylinder, described piston sleeve is mobile on the piston rod also can drive piston cylinder to move.
2. a kind of piston structure according to claim 1, it is characterized in that: on piston cylinder madial wall, be provided with annular groove, the first boss and the second boss is formed respectively at annular groove two ends, described piston sleeve outer surface is provided with the second plunger, when piston sleeve moves, described second plunger moves in annular groove and the second plunger to be against respectively on the first boss and the second boss and to drive piston cylinder to move.
3. a kind of piston structure according to claim 2, it is characterized in that: described piston cylinder comprises front-bank rotor housing and rear-bank rotor housing, described first boss is arranged at front-bank rotor housing one end and is formed with the first position limit cycle, described second boss is arranged at rear-bank rotor housing one end and is formed with the second position limit cycle, guide pin bushing is provided with between front-bank rotor housing and rear-bank rotor housing, described guide pin bushing two ends lay respectively at the first boss and contact with the second position limit cycle with the first position limit cycle respectively with on the second boss, are formed with described annular groove between described guide pin bushing and the first boss, the second boss.
4. a kind of piston structure according to claim 1, is characterized in that: described first plunger ring laterally offers multiple first circular groove around its outer surface, and described first circular groove is axial distribution, is provided with the first seal ring in the first circular groove.
5. a kind of piston structure according to claim 1, is characterized in that: described second plunger ring laterally offers multiple second circular groove around its outer surface, and described second circular groove is axial distribution, is provided with the second seal ring in the second circular groove.
6. a kind of piston structure according to claim 3, it is characterized in that: on the first position limit cycle madial wall, offer the 3rd circular groove, the 3rd seal ring is provided with in the 3rd circular groove, second position limit cycle madial wall offers the 4th circular groove, in the 4th circular groove, is provided with the 4th seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520348337.1U CN204647275U (en) | 2015-05-26 | 2015-05-26 | A kind of piston structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520348337.1U CN204647275U (en) | 2015-05-26 | 2015-05-26 | A kind of piston structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204647275U true CN204647275U (en) | 2015-09-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520348337.1U Expired - Fee Related CN204647275U (en) | 2015-05-26 | 2015-05-26 | A kind of piston structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204647275U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109452981A (en) * | 2018-12-26 | 2019-03-12 | 常州赛乐医疗技术有限公司 | A kind of gutta-percha filling instrument of induction heating |
-
2015
- 2015-05-26 CN CN201520348337.1U patent/CN204647275U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109452981A (en) * | 2018-12-26 | 2019-03-12 | 常州赛乐医疗技术有限公司 | A kind of gutta-percha filling instrument of induction heating |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150916 Termination date: 20200526 |