CN202118026U - Hydraulic cylinder capable of realizing self-reversing and continuous reciprocating movement - Google Patents
Hydraulic cylinder capable of realizing self-reversing and continuous reciprocating movement Download PDFInfo
- Publication number
- CN202118026U CN202118026U CN2011200782180U CN201120078218U CN202118026U CN 202118026 U CN202118026 U CN 202118026U CN 2011200782180 U CN2011200782180 U CN 2011200782180U CN 201120078218 U CN201120078218 U CN 201120078218U CN 202118026 U CN202118026 U CN 202118026U
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- piston
- guide rod
- spool
- rod
- hydraulic cylinder
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- Expired - Fee Related
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Abstract
The utility model discloses a hydraulic cylinder capable of realizing self-reversing and continuous reciprocating movement, which comprises a cylinder barrel, an end cover, a piston, a piston rod, a valve, a valve spool and a guide rod. One end of the cylinder barrel is fixedly connected with the end cover, the other end of the cylinder barrel is fixedly connected with the valve, the piston and the piston rod are provided with center blind holes, limiting sleeves are disposed at inlets of the center blind holes, the valve spool is fixed onto the guide rod, the head of the guide rod penetrates through the limiting sleeves and is positioned inside the center blind holes of the piston and the piston rod, a stopper is arranged at the head of the guide rod, and the valve spool can change oil circuits and controls the piston and the piston rod to reverse when moving along with extension and retraction of the piston rod. The hydraulic cylinder capable of realizing self-reversing and continuous reciprocating movement is simple and reliable in control, and reduces occupied space of equipment and cost.
Description
Technical field
The utility model relates to a kind of oil hydraulic cylinder, particularly a kind of continuous reciprocating oil hydraulic cylinder that self commutates.
Background technique
In industry spot is used, constant hydraulic driving power often need be provided through the continuous to-and-fro motion of oil hydraulic cylinder or move the required function of realization equipment through this.
Conventional oil hydraulic cylinder to-and-fro motion needs selector valve to control; Usually use solenoid directional control valve at present, the characteristics of its switching-over are: when the piston arrives stroke end, with the collision block collision contact of piston rod interlock; Make the selector valve switching-over through automatical control system, and then make oil hydraulic cylinder motion switching-over.
But adopt solenoid directional control valve to control the to-and-fro motion of oil hydraulic cylinder, automatical control system need be set, so equipment occupation space is big, cost is high.
The model utility content
For addressing the above problem, the utility model provides a kind of continuous reciprocating oil hydraulic cylinder that self commutates, and need not the participation of electrical control, reduces taking of the device space.
For realizing above-mentioned purpose, the continuous reciprocating oil hydraulic cylinder that self commutates of the utility model comprises cylinder barrel, end cap, piston, piston rod, valve body, spool and guide rod, and said cylinder barrel one end is fixedly connected with said end cap, and the other end is fixedly connected with said valve body; Said piston is positioned at cylinder barrel; Said piston and piston rod are provided with central blind hole; The inlet of said central blind hole is provided with stop collar, and said spool is fixed on the said guide rod, and the head of said guide rod passes said stop collar; Be positioned at the central blind hole of said piston and piston rod, the head of said guide rod is provided with block; Said end cap is provided with first filler opening; Said valve body is provided with second filler opening and return opening; Said spool is positioned at said valve body, is provided with first distributing groove and second distributing groove in the said valve body, and said first filler opening is communicated with rod chamber; Said second filler opening can be communicated with rodless cavity through said first distributing groove; Said return opening can be communicated with rodless cavity through said second distributing groove, and said spool stretches out and withdrawal when being moved with said piston rod, can seal said first distributing groove and second distributing groove respectively.
Said block comprises two baffle plates that are enclosed within said guide rod head and is clamped in the middle spring of said two baffle plates.
Said guide rod is provided with positioning groove, and said valve body is provided with the elastic positioning pin corresponding with said positioning groove.
The continuous reciprocating oil hydraulic cylinder that self commutates of the utility model, hydraulic control unit and hydraulic pressure performance element is integrated, and need not the participation of electrical control, and control is simple, reliable, and maintenance and easy to maintenance reduces taking of the device space, has reduced cost.
Description of drawings
Fig. 1 is the structural representation of the continuous reciprocating oil hydraulic cylinder that self commutates of the utility model, and wherein piston rod is in retracted mode;
Fig. 2 is in the schematic representation of the state of stretching out for the piston rod of the continuous reciprocating oil hydraulic cylinder that self commutates among Fig. 1.
Embodiment
Referring to Fig. 1 and Fig. 2; The continuous reciprocating oil hydraulic cylinder that self commutates of the utility model comprises cylinder barrel 10; End cap 14, piston 20, piston rod 21, valve body 30, spool 40 and guide rod 41, said cylinder barrel 10 1 ends are fixedly connected with said end cap 14, and the other end is fixedly connected with said valve body 30; Said piston 20 is positioned at cylinder barrel 10, and said piston 20 is provided with central blind hole 22 with piston rod 21, and the inlet of said central blind hole 22 is provided with stop collar 23; Said spool 40 is fixed on the said guide rod 41, and the head of said guide rod 41 passes said stop collar 23, is positioned at the central blind hole 22 of said piston 20 and piston rod 21; The head of said guide rod 41 is provided with block 50, and when said piston rod 21 stretched out, said block 50 can contact with said stop collar 23; Driving said guide rod 41 moves with spool 40; When 21 withdrawals of said piston rod, said block 50 can with central blind hole 22 the bottom contact, promote said guide rod 41 and spool 40 and move; Said end cap 14 is provided with first filler opening 11, and said valve body 30 is provided with second filler opening 31 and return opening 32; Said spool 40 is positioned at said valve body 30; Be provided with first distributing groove 34 and second distributing groove 35 in the said valve body 30; Said first filler opening 11 is communicated with rod chamber 12, and said second filler opening 31 can be communicated with rodless cavity 13 through said first distributing groove 34, and said return opening 32 can be communicated with rodless cavity 13 through said second distributing groove 35; Said spool 40 stretches out and withdrawal when being moved with said piston rod 21, can seal said first distributing groove 34 and second distributing groove 35 respectively; The end of said valve body 30 is provided with valve end cap 33.
Said stop collar 23 is threaded with piston 20, is arranged on the ingress of the central blind hole 22 of said piston 20 and piston rod 21.The block 50 of said guide rod 41 heads is used for contacting with the bottom of said stop collar 23 and said central blind hole 22, drives guide rod 41 and moves, and moves in valve body 30 thereby drive spool 40, switches oil circuit, thereby reaches the purpose of switching-over.Said block 50 carries out spacing through boss and the bolt of stating guide rod 41 heads.For avoiding said block 50 to contact with the bottom rigidity of said stop collar 23 and said central blind hole 22; Said block 50 is preferably flexible block; Preferably, said block 50 comprises two baffle plates 51 that are enclosed within said guide rod 41 heads and the spring 52 that is clamped in said two baffle plates 51 centres.
Below introduce the working principle of the continuous reciprocating oil hydraulic cylinder that self commutates of the utility model.Following " left side " mentioned, " right side ", " left ", " to the right " all are the left and right directions of from Fig. 1 and Fig. 2, being seen.
The continuous reciprocating oil hydraulic cylinder that self commutates of the utility model, first filler opening 11 and second filler opening 31 are communicated with through oil pipe, together fuel feeding.During the work beginning, piston 20 is in the high order end position, and is as shown in Figure 1; Be that piston 20 is in the position near valve body 30; Spool 40 sealings second distributing groove 35, at this moment, hydraulic oil gets into rod chamber 12 and rodless cavity 13 respectively through said first filler opening 11 and second filler opening 31; Because the difference in areas at piston 20 two ends, piston 20 is protruding with piston rod 21 under the effect of pressure.Stop collar 23 is fixed on the piston 20 through being threaded, and moves with piston 20, after moving a segment distance; Stop collar 23 is collided with block 50, along with piston 20 continues to move, drives the guide rod 41 that is fixed on one and moves right with spool 40; Spool 40 moves a segment distance, seals said first distributing groove 34, and said second distributing groove 35 is then opened; This moment, piston 20 also arrived range, and piston rod 21 is in maximum extrusion, and is as shown in Figure 2.Because 34 sealings of said first distributing groove, hydraulic oil gets into rod chamber 12, promote piston 20 and be moved to the left, and piston rod 21 withdrawals, originally the hydraulic oil in the rodless cavity 13 returns fuel tank through second distributing groove 35 from return opening 32.Piston 20 is after being moved to the left certain distance, and block 50 is collided with the bottom of central blind hole 22, and piston 20 continues to be moved to the left; Promote guide rod 41 and be moved to the left with spool 40, spool 40 moves a segment distance, seals said second distributing groove 35; Said first distributing groove 34 is then opened, and this moment, piston 20 also turned back to the high order end position of cylinder barrel 10, and piston rod 21 is withdrawn fully; At this moment hydraulic oil gets into rod chamber 12 and rodless cavity 13 respectively through said first filler opening 11 and second filler opening 31 again; Repeat said process, piston rod 21 is reciprocally stretched out and withdraw do action.
The cavity volume in spool 40 left sides of said valve body 30 inside is communicated with the rodless cavity 13 in said piston 20 left sides, makes spool 40 when move left and right, not receive the effect of other axial forces
For preventing that spool 40 from piston 20 and piston rod 21 moving process axial float taking place; Can two limit positions of spool 40 move left and right be positioned, therefore, the positioning groove 42 that two limit positions to spool 40 position can be set on said guide rod 41; Said valve body 30 is provided with the elastic positioning pin 43 corresponding with said positioning groove 42; Positioning groove 42 is provided with two, the centre distance of two positioning grooves 42 and spool 40 with piston rod 21 stretch out or the distance that moves once of withdrawing equates, at spool 40 sealings second distributing groove 35; When spool 40 is positioned at the position of the leftmost side; Elastic positioning pin 43 is pressed in the positioning groove 42 on right side, and spool moves right when sealing first distributing groove 34, and elastic positioning pin 43 is pressed in the positioning groove 42 in left side.Said elastic positioning pin 43 can adopt conventional spring to add the form of steel ball, and its head is a steel ball, and steel ball is connected with spring.
Claims (3)
1. the continuous reciprocating oil hydraulic cylinder that self commutates is characterized in that, comprises cylinder barrel (10), end cap (14), piston (20), piston rod (21), valve body (30), spool (40) and guide rod (41),
Said cylinder barrel (10) one ends are fixedly connected with said end cap (14), and the other end is fixedly connected with said valve body (30);
Said piston (20) is positioned at cylinder barrel (10); Said piston (20) and piston rod (21) are provided with central blind hole (22); The inlet of said central blind hole (22) is provided with stop collar (23), and said spool (40) is fixed on the said guide rod (41), and the head of said guide rod (41) passes said stop collar (23); Be positioned at the central blind hole (22) of said piston (20) and piston rod (21), the head of said guide rod (41) is provided with block (50);
Said end cap (14) is provided with first filler opening (11); Said valve body (30) is provided with second filler opening (31) and return opening (32); Said spool (40) is positioned at said valve body (30); Be provided with first distributing groove (34) and second distributing groove (35) in the said valve body (30); Said first filler opening (11) is communicated with rod chamber (12), and said second filler opening (31) can be communicated with rodless cavity (13) through said first distributing groove (34), and said return opening (32) can be communicated with rodless cavity (13) through said second distributing groove (35); Said spool (40) stretches out and withdrawal when being moved with said piston rod (21), can seal said first distributing groove (34) and second distributing groove (35) respectively.
2. the continuous reciprocating oil hydraulic cylinder that self commutates as claimed in claim 1 is characterized in that, said block (50) comprises two baffle plates (51) that are enclosed within said guide rod (41) head and is clamped in the middle spring (52) of said two baffle plates (51).
3. the continuous reciprocating oil hydraulic cylinder that self commutates as claimed in claim 1 is characterized in that said guide rod (41) is provided with positioning groove (42), and said valve body (30) is provided with the elastic positioning pin (43) corresponding with said positioning groove (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200782180U CN202118026U (en) | 2011-03-23 | 2011-03-23 | Hydraulic cylinder capable of realizing self-reversing and continuous reciprocating movement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200782180U CN202118026U (en) | 2011-03-23 | 2011-03-23 | Hydraulic cylinder capable of realizing self-reversing and continuous reciprocating movement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202118026U true CN202118026U (en) | 2012-01-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200782180U Expired - Fee Related CN202118026U (en) | 2011-03-23 | 2011-03-23 | Hydraulic cylinder capable of realizing self-reversing and continuous reciprocating movement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202118026U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107178536A (en) * | 2017-07-14 | 2017-09-19 | 南通理工智能制造技术有限公司 | A kind of integral type automatic reciprocating air cylinder device |
| CN107327442A (en) * | 2017-08-23 | 2017-11-07 | 南通理工智能制造技术有限公司 | A kind of automatic reciprocating hydraulic cylinder of electromagnet type |
| CN107339464A (en) * | 2017-08-23 | 2017-11-10 | 南通理工智能制造技术有限公司 | A kind of automatic reciprocating fluid pressure valve device of compact type |
| CN108045432A (en) * | 2018-01-16 | 2018-05-18 | 徐工集团工程机械有限公司 | Steering cylinder, hydraulic power-assist steering system turn to vehicle bridge and vehicle |
| CN108331801A (en) * | 2018-04-13 | 2018-07-27 | 王志海 | A kind of hydraulic cylinder and the hydraulic test containing the hydraulic cylinder |
| CN108757633A (en) * | 2017-03-15 | 2018-11-06 | 桐乡市乌镇润桐嘉业机械维修中心 | A kind of hydraulic device with position-limit mechanism |
| CN109718963A (en) * | 2019-03-06 | 2019-05-07 | 上海旭玉机电设备有限公司 | A kind of hydraulic spraying pump |
-
2011
- 2011-03-23 CN CN2011200782180U patent/CN202118026U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757633A (en) * | 2017-03-15 | 2018-11-06 | 桐乡市乌镇润桐嘉业机械维修中心 | A kind of hydraulic device with position-limit mechanism |
| CN108757633B (en) * | 2017-03-15 | 2019-11-22 | 扬州三元动力机械有限公司 | A kind of hydraulic device with position-limit mechanism |
| CN107178536A (en) * | 2017-07-14 | 2017-09-19 | 南通理工智能制造技术有限公司 | A kind of integral type automatic reciprocating air cylinder device |
| CN107327442A (en) * | 2017-08-23 | 2017-11-07 | 南通理工智能制造技术有限公司 | A kind of automatic reciprocating hydraulic cylinder of electromagnet type |
| CN107339464A (en) * | 2017-08-23 | 2017-11-10 | 南通理工智能制造技术有限公司 | A kind of automatic reciprocating fluid pressure valve device of compact type |
| CN108045432A (en) * | 2018-01-16 | 2018-05-18 | 徐工集团工程机械有限公司 | Steering cylinder, hydraulic power-assist steering system turn to vehicle bridge and vehicle |
| CN108045432B (en) * | 2018-01-16 | 2023-08-25 | 江苏徐工国重实验室科技有限公司 | Steering cylinder, hydraulic power steering system, steering axle and vehicle |
| CN108331801A (en) * | 2018-04-13 | 2018-07-27 | 王志海 | A kind of hydraulic cylinder and the hydraulic test containing the hydraulic cylinder |
| CN109718963A (en) * | 2019-03-06 | 2019-05-07 | 上海旭玉机电设备有限公司 | A kind of hydraulic spraying pump |
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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 |
Granted publication date: 20120118 Termination date: 20200323 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |