CN1892051A - Hydraulic damp type buffer cylinder - Google Patents
Hydraulic damp type buffer cylinder Download PDFInfo
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- CN1892051A CN1892051A CN 200510042908 CN200510042908A CN1892051A CN 1892051 A CN1892051 A CN 1892051A CN 200510042908 CN200510042908 CN 200510042908 CN 200510042908 A CN200510042908 A CN 200510042908A CN 1892051 A CN1892051 A CN 1892051A
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- damping
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- type buffer
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Abstract
The invention relates to a hydraulic damped buffer cylinder, comprising a cylinder each cavity is provided with a damper, where the damper comprises damping cavity and damping piston, and the damping piston is arranged in the damping cavity. And it solves the technical problems of the buffer cylinders in the background techniques, including bad buffering effect, speed uneasy to increase, large volume and rebounding phenomenon easy to occur.
Description
One, technical field
The present invention relates to a kind of hydraulic damp type buffer cylinder.
Two, background technique
The Pneumatic Transmission technology is own through being used widely in various industrial fields more and more as a kind of newer kind of drive.In order to increase work efficiency, at present, executive component one cylinder of pneumatic actuator system is to high-speed motor development.A principal element that influences the cylinder high-speed motion is exactly when cylinder moving arrives its terminal, the piston that kinetic energy and pressure can cause and the impact of end cap.This problem is difficult to be resolved satisfactorily always.Therefore, the buffering research of cylinder is a research focus at present domestic and international this field.The cylinder of domestic and international existing band damping device all is that the mode with exhaust throttle and oppositely back pressure effect reduces cylinder moving speed to reach the purpose that reduces or eliminates impact basically.There is following shortcoming in this method:
1, cushioning effect is poor.Because the decrement of air is big, be difficult in the short time stroke, the very low counterpressure of exhaust cavity be brought up to and can be resisted needed pressure mutually with positive pressure and kinetic energy, therefore the piston of cylinder and end cap are bumped.
2, the movement velocity of bounce cylinder is difficult for improving.Because the decrement of air is big, need the regular hour in advance, reduce air displacement, the air pressure in the exhaust cavity is raise, so it has reduced the average movement velocity of cylinder, prolonged the time of cylinder moving significantly.
3, the volume of bounce cylinder is big.Because the decrement of air is big, make back pressure rise to certain pressure needs long enclosed space, so the volume of such bounce cylinder is big.
4, the phenomenon that has a rebound easily.When the back pressure cavity good leak tightness, the energy that back pressure cavity produces during greater than malleation and kinetic energy the gas expansion can draw backlash.
Three, summary of the invention
The technical problem of the phenomenon that the invention solves that cushioning effect movement velocity poor, bounce cylinder that the bounce cylinder in the background technique exists is difficult for improving, the volume of bounce cylinder has a rebound greatly and easily.
Technical solution of the present invention is: a kind of hydraulic damp type buffer cylinder, comprise cylinder, and its special way is: respectively be provided with a damper in two cavitys of described cylinder.
Above-mentioned damper comprises damping cavity and damping piston, and damping piston is arranged in the damping cavity.
Above-mentioned piston two ends have damping cavity, and damping piston is separately positioned in the damping cavity.
When above-mentioned cylinder is the single pole cylinder, be arranged in the damping cavity after the damping piston in the rod chamber is nested on the piston rod, the damping piston in the rodless cavity is set directly in the damping cavity, and piston is provided with the fixing or adjustable damping hole that is communicated with two damping cavity.
When above-mentioned cylinder was double rod cylinder, two damping pistons were arranged in the damping cavity after being nested on the two-piston bar earlier, and piston is provided with the fixing or adjustable damping hole that is communicated with two damping cavity.
Pressurized face area in above-mentioned piston two damping cavity equates.
Above-mentioned piston rod center is provided with the fluid infusion passage, and its outer end is provided with the fluid infusion hole, and described fluid infusion hole communicates with damping cavity by the fluid infusion passage.
Be respectively arranged with damping cavity on the above-mentioned cylinder two end cap, be arranged in the damping cavity after the damping piston in the rod chamber is nested on the piston rod, the damping piston in the rodless cavity is set directly in the damping cavity, and the damping cavity of two end cap is communicated with by the damping pipeline.
Be provided with the adjustable damping hole in the above-mentioned damping pipeline.
Also be provided with the fluid infusion hole on the above-mentioned damping pipeline.
The present invention has the following advantages:
1, good buffer effect.The present invention adopts liquid as resisting medium, because the compressibility of liquid is little, viscosity is big, and its damping is a lot better than air damping effect, and the present invention can also obtain various damping characteristics by changing damping hole.
2, the movement velocity height of bounce cylinder.The present invention adopts liquid as resisting medium, because the decrement of liquid is little, cushion stroke is short, and the running length of high-speed motion is long in total travel, the time weak point that total travel is required.
3, the axial length of cylinder is short.Because the stroke of damper of the present invention is less, shared space is little, because the length that buffering needs to be increased is than much short as medium with gas.
4, the phenomenon that can not have a rebound.Because the decrement of liquid is less, can not expand basically, there is not the condition of bounce-back when external force changes.
Four, description of drawings
Fig. 1 is the structural representation of the embodiment of the invention one;
Fig. 2 is the structural representation of the embodiment of the invention two;
Fig. 3 is the structural representation of the embodiment of the invention three.
Five, embodiment
The present invention respectively is provided with a damper in two cavitys of cylinder, two dampers communicate by damping hole, absorb the impact energy that occurs when both direction moves to terminal respectively.Concrete structure mainly contains two kinds of forms, a kind of structural type is that damper is arranged on the cylinder piston both sides, another kind of structural type is that damper is separately positioned in the cylinder two end cap, and this damper comprises damping cavity and damping piston, and described damping piston is arranged in the damping cavity.
Referring to Fig. 1, when cylinder is the single pole cylinder, have damping cavity 2 at piston 3 two ends, 6, damping piston 5 in the rod chamber is nested on the piston rod 7, be arranged on then in the damping cavity 6, damping piston 1 in the rodless cavity is set directly in the damping cavity 2, also have on the piston 3 and be communicated with two damping cavity 2,6 damping hole 4, two damping cavity 2,6 communicate by damping hole 4 forms a transformable seal chamber, fills with viscous liquid in the sealing cavity, and it can absorb the impact energy that occurs when both direction moves to terminal respectively, when piston 3 moves near terminal, when damping piston 5 contacts with end cap 10, the viscous liquid pressurized in the damping cavity 6, pressure raises, produce back pressure on the one hand, motion-promotion force is reduced, on the other hand, in damping hole 4 enters the damping cavity 2 of another damper, for reverse damping creates conditions, because the movement velocity of damping function piston 3 reduces fast, reduce kinetic energy simultaneously, reach the effect of buffering.
Piston rod 7 centers are provided with fluid infusion passage 8, and its outer end is provided with fluid infusion hole 10, and fluid infusion hole 10 communicates with damping cavity 2 by fluid infusion passage 8, can replenish damp liquid by fluid infusion hole 10 in damping cavity 2.
Pressurized face area in 3 liang of damping cavity of piston 2,6 should equate, or design according to the kinetic energy of both direction.
Referring to Fig. 2, when cylinder was two bar cylinder, two damping pistons 13,16 of the present invention were nested in respectively on the piston rod 11,17 earlier, were arranged in the damping cavity 12,15 that piston 14 two ends have again, and other structure and working method are identical with the single pole cylinder.
Referring to Fig. 3, the present invention also can be respectively arranged with damping cavity 19,26 on cylinder two end cap 18,27, damping piston 25 in the rod chamber is arranged in the damping cavity 26, be nested in then on the piston rod 24, damping piston 20 in the rodless cavity is set directly in the damping cavity 19, and two damping cavity, 19,26 usefulness damping pipelines 23 are communicated with, and are provided with adjustable damping hole 22 in damping pipeline 23, form a transformable seal chamber, wherein fill with viscous liquid.When piston 21 motion near terminal when damping piston 25 in the end cap 27 contact, the viscous liquid in the damping piston squeezed air-damping chamber 26, the pressure rising, one side produces resistance, and motion-promotion force is reduced; On the other hand, viscous liquid in the damping cavity 26 enters another damping cavity 19 through damping pipeline 23 and damping hole 22, for reverse damping creates conditions, simultaneously because damping function reduces the movement velocity of piston 21 fast, reduce kinetic energy effectively, reached the effect of buffering.23 also are provided with fluid infusion hole 28 on the damping pipeline, can replenish damp liquid by fluid infusion hole 28.This mode of structure can be applicable to two bar cylinders equally.
Damper of the present invention not only can be applicable in the cylinder, also can be applicable in the fluid cylinder, and its structural type is identical.
Claims (10)
1, a kind of hydraulic damp type buffer cylinder comprises cylinder, it is characterized in that: respectively be provided with a damper in two cavitys of described cylinder.
2 hydraulic damp type buffer cylinders according to claim 1 is characterized in that: described damper comprises damping cavity and damping piston, and described damping piston is arranged in the damping cavity.
3, hydraulic damp type buffer cylinder according to claim 2 is characterized in that: described piston two ends have damping cavity, and described damping piston is separately positioned in the damping cavity.
4, hydraulic damp type buffer cylinder according to claim 3, it is characterized in that: when described cylinder is the single pole cylinder, after being nested on the piston rod, damping piston in the described rod chamber is arranged in the damping cavity, damping piston in the described rodless cavity is set directly in the damping cavity, and described piston is provided with the fixing or adjustable damping hole that is communicated with two damping cavity.
5, hydraulic damp type buffer cylinder according to claim 3, it is characterized in that: when described cylinder is double rod cylinder, described two damping pistons are arranged in the damping cavity after being nested on the two-piston bar earlier, and described piston is provided with the fixing or adjustable damping hole that is communicated with two damping cavity.
6, according to claim 4 or 5 described hydraulic damp type buffer cylinders, it is characterized in that: the pressurized face area in described piston two damping cavity equates.
7, hydraulic damp type buffer cylinder according to claim 6 is characterized in that: described piston rod center is provided with the fluid infusion passage, and its outer end is provided with the fluid infusion hole, and described fluid infusion hole communicates with damping cavity by the fluid infusion passage.
8, hydraulic damp type buffer cylinder according to claim 1, it is characterized in that: be respectively arranged with damping cavity on the described cylinder two end cap, damping piston in the described rod chamber is nested on the piston rod after being arranged in the damping cavity, damping piston in the described rodless cavity is set directly in the damping cavity, and the damping cavity of described two end cap is communicated with by the damping pipeline.
9, hydraulic damp type buffer cylinder according to claim 8 is characterized in that: be provided with the adjustable damping hole in the described damping pipeline.
10, hydraulic damp type buffer cylinder according to claim 9 is characterized in that: also be provided with the fluid infusion hole on the described damping pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510042908 CN1892051A (en) | 2005-07-08 | 2005-07-08 | Hydraulic damp type buffer cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510042908 CN1892051A (en) | 2005-07-08 | 2005-07-08 | Hydraulic damp type buffer cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1892051A true CN1892051A (en) | 2007-01-10 |
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ID=37597182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510042908 Pending CN1892051A (en) | 2005-07-08 | 2005-07-08 | Hydraulic damp type buffer cylinder |
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| Country | Link |
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| CN (1) | CN1892051A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012109769A1 (en) * | 2011-02-18 | 2012-08-23 | Norgren, Inc. | Multiple-stage fluid operated actuator |
| CN102720724B (en) * | 2011-03-29 | 2016-05-18 | 海洋王照明科技股份有限公司 | Expansion link mechanism |
-
2005
- 2005-07-08 CN CN 200510042908 patent/CN1892051A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012109769A1 (en) * | 2011-02-18 | 2012-08-23 | Norgren, Inc. | Multiple-stage fluid operated actuator |
| CN103415710A (en) * | 2011-02-18 | 2013-11-27 | 诺格伦公司 | Multiple-stage fluid operated actuator |
| CN103415710B (en) * | 2011-02-18 | 2016-01-20 | 诺格伦公司 | Multistage fluid operated actuator |
| US9644646B2 (en) | 2011-02-18 | 2017-05-09 | Norgren, Inc. | Multiple-staged fluid operated actuator |
| CN102720724B (en) * | 2011-03-29 | 2016-05-18 | 海洋王照明科技股份有限公司 | Expansion link mechanism |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |