CN203939801U - Double-piston band free buffer stroke cylinder - Google Patents
Double-piston band free buffer stroke cylinder Download PDFInfo
- Publication number
- CN203939801U CN203939801U CN201420048169.XU CN201420048169U CN203939801U CN 203939801 U CN203939801 U CN 203939801U CN 201420048169 U CN201420048169 U CN 201420048169U CN 203939801 U CN203939801 U CN 203939801U
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- China
- Prior art keywords
- piston
- secondary piston
- cylinder
- air cavity
- lock pin
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- Expired - Fee Related
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 16
- 239000010959 steel Substances 0.000 claims abstract description 16
- 230000007306 turnover Effects 0.000 description 14
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 238000013016 damping Methods 0.000 description 6
- 230000033001 locomotion Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 5
- 238000007689 inspection Methods 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 208000002925 dental caries Diseases 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
Abstract
The utility model double-piston band free buffer stroke cylinder, is comprised of secondary piston bar, screw, block, back piston bar, cylinder front cover, pneumatic lock pin, lock pin Returnning spring, baffle ring, secondary piston, steel ball, steel ball Returnning spring, narrow meshed jackscrew mother, back piston, cylinder body, cylinder rear end cover, gas port I, air cavity I, air cavity II, air cavity III, gas port II.The cylinder front cover inner side of cylinder body fills pneumatic lock pin, and pneumatic lock pin is equipped with lock pin Returnning spring.Middle part is the secondary piston that baffle ring is housed, and secondary piston is fixed on secondary piston bar, and two reverse upper unidirectional hole and lower unidirectional holes are each other set on secondary piston.Back piston is fixed on back piston bar, and back piston bar is contained in secondary piston bar center hole.
Description
Technical field
The utility model relates to the cylinder in a kind of pneumatic actuator system, particularly a kind of double-piston band free buffer stroke cylinder.
Background technique
At present, traditional cylinder only has two end-of-travel position, at cylinder to before end-of-travel position, by piston and end cap, seal a part of pressurized air, force pressurized air to extrude by aperture or finedraw, produce very large resistance, workpiece is braked, slack-off movement velocity gradually, to reach the effect of buffering.When cylinder enters into buffer stage, cylinder is input power still, the pressure correlation of its size and source of the gas.
Because China's rail motor set series is more, car body contour shape is complicated and various, in motor car inspection and repair platform turn-over plate mechanism, require the compatible all vehicles of turn-over plate mechanism, this just requires turnover panel before approaching car body, to cut off power, turnover panel is turned under freely slowly under the effect of the damping force of gravity and cylinder, avoid turnover panel that rail motor set car body is weighed wounded.Can find out, the still dynamic input in retraction cushion stroke of traditional cylinder, only depends on the buffering of traditional cylinder and the optimization of control form to be difficult to avoid turnover panel to weigh car body phenomenon wounded.
Summary of the invention
The purpose of this utility model is to overcome traditional cylinder deficiency and designs a kind of double-piston band free buffer stroke cylinder for motor car inspection and repair platform turnover panel powered actuation mechanism, after translating into a certain degree under turnover panel, cut off power, turnover panel is turned under freely slowly under the effect of the damping force of gravity and cylinder, avoid turnover panel that rail motor set car body is weighed wounded.
The utility model is comprised of secondary piston bar 1, screw 2, block 3, back piston bar 4, cylinder front cover 5, pneumatic lock pin 6, lock pin Returnning spring 7, baffle ring 8, secondary piston 9, steel ball 10, steel ball Returnning spring 11, narrow meshed jackscrew mother 12, back piston 13, cylinder body 14, cylinder rear end cover 15, gas port I16, air cavity I17, air cavity II18, air cavity III19, gas port II20.
Cylinder front cover 5 inner sides of cylinder body 14 fill pneumatic lock pin 6, and the secondary piston 9 that baffle ring 8 is equipped with at middle part is fixed on secondary piston bar 1, and the back piston bar 4 that block 3 is housed is contained in secondary piston bar 1 center hole, and back piston 13 is fixed on back piston bar 4.Pneumatic lock pin 6 is equipped with lock pin Returnning spring 7.
Secondary piston 9 is divided into air cavity I18 and two air cavitys of air cavity II19 by the space between cylinder front cover 5 and back piston 13, and two reverse upper unidirectional hole 91 and lower unidirectional holes 92 are each other set on secondary piston 9.In two unidirectional holes, all fill steel ball 10, steel ball Returnning spring 11, narrow meshed jackscrew mother 12.
The beneficial effects of the utility model are: can be good at being applied to, in motor car inspection and repair platform turn-over plate mechanism, having avoided turnover panel to weigh car body phenomenon wounded, for protection rail motor set car body provides powerful guarantee; Improve the upset performance of turnover panel simultaneously, greatly reduce turn-over plate mechanism debugging difficulty and debugging cost.
Accompanying drawing explanation
Fig. 1-cylinder body stretches out state completely.
Fig. 2-back piston and back piston bar move backward.
Fig. 3-back piston and back piston bar pull secondary piston to move backward.
Fig. 4-secondary piston free buffer state.
The complete retracted state of Fig. 5-cylinder body.
Fig. 6-be the V enlarged view in Fig. 3.
Fig. 7-the external characteristic curve of stroke (the secondary piston bar moving direction that the arrow on curve is cylinder) is schemed for the Input Forces of double-piston band free buffer stroke cylinder.
Reference character
1-secondary piston bar, 2-screw, 3-block
4-back piston bar, 5-cylinder front cover, 6-pneumatic lock pin
7-lock pin Returnning spring, 8-baffle ring, 9-secondary piston
91-upper unidirectional hole 92-lower unidirectional hole, 10-steel ball
11-steel ball Returnning spring 12-narrow meshed jackscrew mother, 13-back piston
14-cylinder body, 15-cylinder rear end cover, 16-gas port I
17-air cavity I, 18-air cavity II, 19-air cavity III
20-gas port III, 21-secondary piston burr groove
Embodiment
By reference to the accompanying drawings the embodiment of model utility is described
Accompanying drawing: 1,2,3,4,5,6
The utility model is mainly comprised of secondary piston bar 1, screw 2, block 3, back piston bar 4, cylinder front cover 5, pneumatic lock pin 6, lock pin Returnning spring 7, baffle ring 8, secondary piston 9, steel ball 10, steel ball Returnning spring 11, narrow meshed jackscrew mother 12, back piston 13, cylinder body 14, cylinder rear end cover 15, gas port I16, air cavity I17, air cavity II18, air cavity III19, gas port II20.
Cylinder front cover 5 inner sides of cylinder body 14 fill pneumatic lock pin 6, and the secondary piston 9 that baffle ring 8 is equipped with at middle part is fixed on secondary piston bar 1, by the back piston bar 4 of screw 2 fixed stops 3, are contained in secondary piston bar 1 center hole, and back piston 13 is fixed on back piston bar 4.Pneumatic lock pin 6 is equipped with lock pin Returnning spring 7.
Secondary piston 9 is divided into air cavity I18 and two air cavitys of air cavity II19 by the space between cylinder front cover 5 and back piston 13.On secondary piston 9, arrange two and in the reverse unidirectional hole in upper unidirectional hole 91 and lower unidirectional hole 92, two, all fill steel ball 10, steel ball Returnning spring 11, narrow meshed jackscrew mother 12 each other.
Accompanying drawing: 1,7
Under the initial elastic force effect of lock pin Returnning spring 7, pneumatic lock pin 6 lower ends are stuck in the secondary piston burr groove 21 on secondary piston bar 1, secondary piston bar 1 and secondary piston 9 can not moved, and piston rod 1 and secondary piston 9 are in the lock state.In this case, when gas port I16 is communicated with atmosphere, gas port II20 is communicated with pressure air source, pressurized air enters the lower unidirectional hole 92 of secondary piston 9 through gas port II20, air cavity III19, press steel ball 10, steel ball Returnning spring 11, by narrow meshed jackscrew mother 12, enters air cavity II18, compressed-air actuated pressure-acting is on back piston 13, owing to there is no load on back piston 13 and back piston bar 4, back piston 13 and back piston bar 4 can move fast backward, to slow down the pressure rise of air cavity III19.This process is cylinder interior motion.On Fig. 7 curve, do not embody.
Accompanying drawing: 2,7
Due to the motion backward fast of back piston 13 and back piston bar 4, when moving rearwards to fast the block 3 that is arranged on back piston bar 4 and being arranged on baffle ring 8 on secondary piston 9 and contacting, back piston 13 and back piston bar 4 are understood stop motions.At this moment, the volume sum of air cavity II18 and air cavity III19 no longer changes, along with compressed-air actuated continuing enters, the pressure meeting fast rise of air cavity II18 and air cavity III19, when the pressure rise of air cavity III19 is to can overcome the initial elastic force of lock pin Returnning spring 7 time, pneumatic lock pin 6 moves up, pneumatic lock pin 6 lower ends depart from the secondary piston burr groove 21 on secondary piston bar 1, the locking of releasing to secondary piston 9 and secondary piston bar 1, at this moment, back piston 13 is under the pressure of pressurized gas, by the block 3 on back piston bar 4 and the baffle ring 8 on secondary piston 9, pull secondary piston 9 and secondary piston bar 1 to continue to move backward.Corresponding c → d process in Fig. 7.
Accompanying drawing: 3,7
When back piston 13 moves to stroke terminal, back piston 13 and 4 stop motions of back piston bar, air cavity I17 disappears simultaneously.At this moment the air cavity II18 of secondary piston 9 both sides and the air pressure of air cavity III19 equate, because the both sides area of secondary piston 9 differs very little, therefore can be similar to and think that secondary piston 9 does not have active force output, and can realize the cut-out of power.The position that corresponding e is ordered in Fig. 7.
Accompanying drawing: 4,7
If the secondary piston of cylinder 9 and secondary piston bar 1 continue to move backward.At this moment the volume of air cavity II18 reduces, the increase of air cavity III19 volume, owing to existing the volume reduction of air cavity II18 to be approximately equal to the increasing amount of air cavity III19 volume, consider the compressibility of air pressure simultaneously, so the pressurized air of air cavity II18 can enter into air cavity III19 through the upper unidirectional hole 91 on secondary piston 9, thereby produces damping slow impulse force; Otherwise, by unidirectional hole 92, also can produce damping slow impulse force.Corresponding e → f process in Fig. 7.The direction of damping slow impulse force is contrary with external load power.
Accompanying drawing: 5,7
For the complete retracted state of cylinder body 14, when gas port II20 connects atmosphere, during gas port 16 cut-in pressure air-source, air pressure acts directly on back piston 13, this is that back piston 13 promotes secondary piston 9 and secondary piston bar 1 travels forward together, until move to the position stop motion of Fig. 1.Corresponding a → b process in Fig. 7.
The upper unidirectional hole 91 and the lower unidirectional hole 92 that on secondary piston 9, arrange are reverse each other, and open when cylinder body 14 starts to bounce back in lower unidirectional hole 92, pressurized gas by lower unidirectional hole 92 by pressure-acting on back piston 13; Open when secondary piston 9 free buffer in upper unidirectional hole 91, and Main Function is that the pressurized air of air cavity II18 is introduced to air cavity III19 by upper unidirectional hole 91, and produces damping force in this process.
Accompanying drawing: 7
From a → b, be the process that cylinder stretches out, cylinder thrust is F
push away;c → d is cylinder retraction process, input tensile force f
draw.the free buffer stroke that is cylinder from e → f, the power of cylinder input is approximately zero, is mainly cushion effect, and its size is relevant with the size in external load speed and unidirectional hole, and direction is contrary with external load power, adopts shadow representation.
Claims (2)
1. a double-piston band free buffer stroke cylinder, by secondary piston bar (1), screw (2), block (3), back piston bar (4), cylinder front cover (5), pneumatic lock pin (6), lock pin Returnning spring (7), baffle ring (8), secondary piston (9), steel ball (10), steel ball Returnning spring (11), narrow meshed jackscrew female (12), back piston (13), cylinder body (14), cylinder rear end cover (15), gas port I (16), air cavity I (17), air cavity II (18), air cavity III (19), gas port II (20) forms, it is characterized in that filling pneumatic lock pin (6) in cylinder front cover (5) inner side of cylinder body (14), the secondary piston (9) that baffle ring (8) are equipped with at middle part is fixed on secondary piston bar (1), the back piston bar (4) that block (3) is housed is contained in secondary piston bar (1) center hole, back piston (13) is fixed on back piston bar (4).
2. double-piston band free buffer stroke cylinder according to claim 1, it is characterized in that between secondary piston (9) and cylinder front cover (5) it being air cavity III (19), space between secondary piston (9) and back piston (13) is air cavity II (18), and two reverse upper unidirectional hole (91) and lower unidirectional holes (92) are each other set on secondary piston (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420048169.XU CN203939801U (en) | 2014-01-23 | 2014-01-23 | Double-piston band free buffer stroke cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420048169.XU CN203939801U (en) | 2014-01-23 | 2014-01-23 | Double-piston band free buffer stroke cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203939801U true CN203939801U (en) | 2014-11-12 |
Family
ID=51859117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420048169.XU Expired - Fee Related CN203939801U (en) | 2014-01-23 | 2014-01-23 | Double-piston band free buffer stroke cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203939801U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108050130A (en) * | 2017-12-30 | 2018-05-18 | 广东顺德普南气动科技有限公司 | Locking cylinder |
| CN108240370A (en) * | 2018-02-09 | 2018-07-03 | 武汉船用机械有限责任公司 | Damper piston |
| CN108860036A (en) * | 2018-07-26 | 2018-11-23 | 重庆交通职业学院 | A kind of automobile buffer beam adjustable damping formula hydraulic energy absorption mechanism |
| CN109642593A (en) * | 2016-08-05 | 2019-04-16 | 康斯博格汽车股份公司 | With the position actuator pneumatically divulged information |
-
2014
- 2014-01-23 CN CN201420048169.XU patent/CN203939801U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109642593A (en) * | 2016-08-05 | 2019-04-16 | 康斯博格汽车股份公司 | With the position actuator pneumatically divulged information |
| CN108050130A (en) * | 2017-12-30 | 2018-05-18 | 广东顺德普南气动科技有限公司 | Locking cylinder |
| CN108240370A (en) * | 2018-02-09 | 2018-07-03 | 武汉船用机械有限责任公司 | Damper piston |
| CN108860036A (en) * | 2018-07-26 | 2018-11-23 | 重庆交通职业学院 | A kind of automobile buffer beam adjustable damping formula hydraulic energy absorption mechanism |
| CN108860036B (en) * | 2018-07-26 | 2023-08-29 | 重庆交通职业学院 | Adjustable damping type hydraulic energy absorption mechanism for automobile anti-collision beam |
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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: 20141112 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |