CN210013881U - Porous buffering hydraulic cylinder - Google Patents
Porous buffering hydraulic cylinder Download PDFInfo
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- CN210013881U CN210013881U CN201920483074.3U CN201920483074U CN210013881U CN 210013881 U CN210013881 U CN 210013881U CN 201920483074 U CN201920483074 U CN 201920483074U CN 210013881 U CN210013881 U CN 210013881U
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- cylinder body
- oil outlet
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- cylinder
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Abstract
The utility model relates to a buffer hydraulic cylinder, in particular to a porous buffer hydraulic cylinder, which comprises a piston rod, wherein the center of one end of the piston is provided with the piston rod; the piston rod is inserted on the guide sleeve in a sliding way; one end of the cylinder body is provided with a cylinder body oil outlet, the other end of the cylinder body is provided with a cylinder body oil inlet, the guide sleeve is fixed at one end of the cylinder body, and the piston is inserted into the cylinder body in a sliding manner; the oil outlet seat is fixed on the outer surface of the cylinder body, an oil outlet cavity is formed in the surface, connected with the cylinder body, of the oil outlet seat, an oil outlet hole of the oil seat is formed in the oil outlet seat, and the oil outlet hole of the oil seat is communicated with the oil outlet cavity; the diameter of cylinder body oil outlet is less than the diameter of oil seat oil outlet, and the cylinder body oil outlet is located the oil cavity, and the cylinder body oil outlet is equipped with a plurality ofly, and the axis setting of cylinder body is followed to the cylinder body oil outlet. The hydraulic cylinder reduces the flow of return oil by a multi-hole throttling mode to control the moving speed of the piston, so that the piston moves more stably, and the hydraulic cylinder has the advantages of simple structure, good buffering effect, reliable buffering, small impact force between the piston and the cylinder body, small vibration of the hydraulic cylinder and stable operation.
Description
Technical Field
The utility model relates to a buffering pneumatic cylinder, especially porous buffering pneumatic cylinder.
Background
The impact of the existing hydraulic cylinder and the cylinder body when the piston is rapidly extended out is large, so that the cylinder body is large in vibration and unstable in operation, the service life of the cylinder body is shortened, and although some hydraulic cylinders are provided with buffer devices, the buffer structure is complex at that time, and the buffer effect is poor.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problem, the utility model provides a simple structure, effectual, the stable porous buffering pneumatic cylinder of operation of buffering, concrete technical scheme is:
the porous buffer hydraulic cylinder comprises a piston rod and a piston, wherein the piston rod is arranged in the center of one end of the piston; the piston rod is inserted on the guide sleeve in a sliding manner; the piston type oil cylinder comprises a cylinder body, a piston, a guide sleeve and a piston rod, wherein one end of the cylinder body is provided with a cylinder body oil outlet, the other end of the cylinder body is provided with a cylinder body oil inlet, the guide sleeve is fixed at one end of the cylinder body, and the piston is inserted into the cylinder body in a sliding manner; the oil outlet seat is fixed on the outer surface of the cylinder body, an oil outlet cavity is formed in the surface, connected with the cylinder body, of the oil outlet seat, an oil outlet hole of the oil seat is formed in the oil outlet seat, and the oil outlet hole of the oil seat is communicated with the oil outlet cavity; the diameter of cylinder body oil outlet is less than the diameter of oil seat oil outlet, the cylinder body oil outlet is located the oil cavity, the cylinder body oil outlet is equipped with a plurality ofly, and the axis setting of cylinder body is followed to the cylinder body oil outlet.
Through adopting above-mentioned technical scheme, the cylinder body oil outlet is equipped with a plurality ofly along the axis of cylinder body, and when the piston began to contact with the cylinder body oil outlet, the cylinder body oil outlet was plugged up in proper order to the piston, along with the increase by stifled cylinder body oil outlet, the oil return volume diminishes, and oil return speed diminishes, and piston moving speed slows down, realizes the efficient buffering, and buffering effect is good, has reduced the impact force of piston with the cylinder body greatly, and the vibration is little, and the operation is stable. When the piston rod retracts, the piston sequentially leaks out of the oil outlet hole of the cylinder body, the oil inlet amount is increased along with the increase of the oil outlet holes of the cylinder body, the moving speed of the piston is increased, and the piston rod retracts rapidly.
The total oil passing area of the oil outlet hole of the cylinder body is the same as that of the oil outlet hole of the oil seat.
Preferably, the cylinder body oil outlet holes are provided with a plurality of rows along the axis of the cylinder body.
Through adopting above-mentioned technical scheme, the cylinder body oil outlet that the multirow set up avoids the oil output undersize to lead to the translation rate of piston rod too slow.
Preferably, the end of the piston is provided with a conical surface, and the conical surface is positioned at one side of the guide sleeve.
By adopting the technical scheme, the conical surface can reduce the pulse pressure when the piston enters the buffer area.
Preferably, the vertex angle of the conical surface is 5-10 °.
Preferably, the apex angle of the conical surface is 6 °.
By adopting the technical scheme, when the buffer stage is just started, the pressure of the buffer cavity rises more smoothly, and the instantaneous ultrahigh pulse pressure cannot be generated.
Preferably, be equipped with dust ring and axle on the uide bushing and use the sealing washer, dust ring and axle all are located between piston rod and the uide bushing, the dust ring is located one side of cylinder body tip, the axle is located one side of cylinder body inside with the sealing washer.
Through adopting above-mentioned technical scheme, the dust ring prevents that the dust from getting into inside the cylinder body, and the axle prevents the cylinder body oil leak with the sealing washer.
Preferably, one end of the guide sleeve, which is positioned inside the cylinder body, is provided with an oil return ring, the diameter of the oil return ring is smaller than the inner diameter of the cylinder body, and the oil return ring is positioned at an oil outlet of the cylinder body at the end part of the cylinder body.
Through adopting above-mentioned technical scheme, return oil ring and be used for holding hydraulic oil, make things convenient for the piston to retract.
Preferably, the piston is provided with a sealing ring for the hole.
Through adopting above-mentioned technical scheme, the sealing washer prevents that the cavity at piston both ends from oil mixing for the hole.
Preferably, the piston is provided with a support ring.
Through adopting above-mentioned technical scheme, the support ring prevents that the piston from removing the in-process and pulling the cylinder body inner wall.
Preferably, the other end of the piston is provided with a buffer column, and the diameter of the buffer column is smaller than the inner diameter of the cylinder body.
Through adopting above-mentioned technical scheme, the cushion column is the cavity that leaves the piston and start to impact force when buffering the withdrawal.
Compared with the prior art the utility model discloses following beneficial effect has:
the utility model provides a porous buffering pneumatic cylinder reduces the flow of oil return through porous throttle and controls the translation rate of piston, makes the piston move more steadily, and simple structure, buffering are effectual, the buffering is reliable, piston and cylinder body impact force are little, the pneumatic cylinder vibration is little, the operation is stable.
Drawings
FIG. 1 is a schematic cross-sectional view of a multi-hole cushion cylinder with its piston rod unextended;
FIG. 2 is a schematic cross-sectional view of the piston rod of the multi-hole cushion cylinder when extended;
FIG. 3 is a schematic view of the piston construction;
FIG. 4 is a schematic diagram of the arrangement of oil outlets in the cylinder.
Detailed Description
The present invention will now be further described with reference to the accompanying drawings.
The moving speed of the piston 6 is controlled by reducing the flow of return oil in a multi-hole throttling mode, so that the piston 6 moves more stably, and the impact force between the piston 6 and the cylinder body 1 is reduced.
Example one
As shown in fig. 1 to 2, the porous buffer hydraulic cylinder comprises a piston rod 5 and a piston 6, wherein the piston rod 5 is arranged in the center of one end of the piston 6; the piston rod 5 is inserted on the guide sleeve 3 in a sliding manner; the cylinder body 1, one end of the cylinder body 1 has oil outlet holes 11 of the cylinder body, another end of the cylinder body 1 has oil inlet holes 12 of the cylinder body, the guide sleeve 3 is fixed on one end of the cylinder body 1, the piston 6 is inserted in the cylinder body 1 slidably; the oil outlet base 2 is fixed on the outer surface of the cylinder body 1, an oil outlet cavity 21 is formed in the surface, connected with the cylinder body 1, of the oil outlet base 2, an oil base oil outlet hole 22 is formed in the oil outlet base 2, and the oil base oil outlet hole 22 is communicated with the oil outlet cavity 21; the diameter of cylinder body oil outlet 11 is less than the diameter of oil seat oil outlet 22, and cylinder body oil outlet 11 is located out oil pocket 21, and cylinder body oil outlet 11 is equipped with a plurality ofly, and cylinder body oil outlet 11 sets up along the axis of cylinder body 1.
Specifically, the cylinder body oil outlet holes 11 are arranged in a row and arranged along the axis of the cylinder body 1, the oil outlet cavity 21 is a rectangular oil groove, and the oil outlet cavity 21 is matched with the cylinder body oil outlet holes 11.
The piston 6 divides the cylinder body 1 into a rod cavity and a rodless cavity, the cylinder body oil outlet hole 11 is positioned in the rod cavity, and the cylinder body oil inlet hole 12 is positioned in the rodless cavity.
The guide sleeve 3 is provided with a dustproof ring 41 and a shaft sealing ring 42, the dustproof ring 41 and the shaft sealing ring 42 are both positioned between the piston rod 5 and the guide sleeve 3, the dustproof ring 41 is positioned on one side of the end part of the cylinder body 1, and the shaft sealing ring 42 is positioned on one side of the inside of the cylinder body 1. The dust seal 41 prevents dust from entering the cylinder 1, and the shaft seal 42 prevents oil from leaking from the cylinder 1.
One end of the guide sleeve 3 located inside the cylinder 1 is provided with an oil return ring 31, the diameter of the oil return ring 31 is smaller than the inner diameter of the cylinder 1, and the oil return ring 31 is located at the cylinder oil outlet 11 at the end of the cylinder 1. The oil return ring 31 is used to contain hydraulic oil to facilitate retraction of the piston 6.
The piston 6 is provided with a hole seal 62. The seal ring 62 for hole prevents oil leakage from the cavity at both ends of the piston 6.
The piston 6 is provided with a support ring 63. The support ring 63 prevents the piston 6 from pulling the inner wall of the cylinder 1 during movement.
The other end of the piston 6 is provided with a buffer column 64, the diameter of the buffer column 64 is smaller than the inner diameter of the cylinder body 1, and the buffer column 64 is positioned in the rodless cavity. The cushion column 64 is a chamber that leaves the piston 6 activated and cushions the impact force at retraction.
When the rodless cavity is filled with oil, the piston rod 5 is pushed to stretch out, when the piston 6 is in contact with the cylinder body oil outlet hole 11, the piston 6 sequentially blocks the cylinder body oil outlet hole 11, along with the increase of the blocked cylinder body oil outlet hole 11, the oil return amount is reduced, the oil return speed is reduced, the moving speed of the piston 6 is reduced, efficient buffering is realized, the buffering effect is good, the impact force between the piston 6 and the cylinder body 1 is greatly reduced, the vibration is small, and the operation is stable. When oil enters the rod cavity, the piston rod 5 retracts, the piston 6 sequentially leaks out of the oil outlet hole 11 of the cylinder body, the oil inlet amount is increased along with the increase of the oil outlet holes 11 of the cylinder body, the moving speed of the piston 6 is increased, and the piston rod 5 retracts rapidly.
Example two
In addition to the first embodiment, as shown in fig. 4, the cylinder outlet holes 11 are provided in a plurality of rows along the axis of the cylinder 1. The cylinder body oil outlet holes 11 arranged in multiple rows avoid that the moving speed of the piston rod 5 is too slow due to the fact that the oil outlet amount is too small. The arrangement of the cylinder body oil outlet hole 11 can be set according to the requirement.
Usually two rows are provided. Too many cylinder outlet holes 11 result in a large amount of oil outlet and high processing costs.
EXAMPLE III
In addition to the first or second embodiment, as shown in fig. 1 to 3, the end of the piston 6 is provided with a conical surface 61, and the conical surface 61 is located on one side of the guide sleeve 3. When the apex angle A of the conical surface 61 is 6 degrees, the pressure of the buffer area rises more smoothly when the conical surface 61 enters the buffer stage, and instantaneous ultrahigh pulse pressure cannot be generated, so that the buffer is stable.
Claims (10)
1. Porous damping hydraulic cylinder comprising
A piston rod;
the center of one end of the piston is provided with a piston rod;
the piston rod is inserted on the guide sleeve in a sliding manner; and
the piston type oil cylinder comprises a cylinder body, a piston, a guide sleeve and a piston rod, wherein one end of the cylinder body is provided with a cylinder body oil outlet, the other end of the cylinder body is provided with a cylinder body oil inlet, the guide sleeve is fixed at one end of the cylinder body, and the piston is inserted into the cylinder body in a sliding manner;
it is characterized by also comprising
The oil outlet seat is fixed on the outer surface of the cylinder body, an oil outlet cavity is formed in the surface, connected with the cylinder body, of the oil outlet seat, an oil outlet hole of the oil seat is formed in the oil outlet seat, and the oil outlet hole of the oil seat is communicated with the oil outlet cavity;
the diameter of cylinder body oil outlet is less than the diameter of oil seat oil outlet, the cylinder body oil outlet is located the oil cavity, the cylinder body oil outlet is equipped with a plurality ofly, and the axis setting of cylinder body is followed to the cylinder body oil outlet.
2. The multi-orifice cushion cylinder of claim 1, wherein said cylinder block oil outlet orifices are arranged in a plurality of rows along the axis of the cylinder block.
3. The multi-hole cushion hydraulic cylinder according to claim 1, wherein the end of the piston is provided with a conical surface, and the conical surface is located on one side of the guide sleeve.
4. The multi-orifice cushion cylinder of claim 3, wherein the apex angle of said conical surface is 5-10 °.
5. The multi-orifice cushion cylinder of claim 4, wherein the apex angle of said conical surface is 6 °.
6. The multi-hole buffering hydraulic cylinder according to claim 1, wherein a dust ring and a shaft sealing ring are arranged on the guide sleeve, the dust ring and the shaft sealing ring are both positioned between the piston rod and the guide sleeve, the dust ring is positioned on one side of the end part of the cylinder body, and the shaft sealing ring is positioned on one side of the inside of the cylinder body.
7. The multi-hole cushion hydraulic cylinder according to claim 1, wherein one end of the guide sleeve located inside the cylinder body is provided with a return ring, the diameter of the return ring is smaller than the inner diameter of the cylinder body, and the return ring is located at a cylinder body oil outlet at the end of the cylinder body.
8. The multi-orifice cushion cylinder of claim 1 wherein said piston is provided with an orifice gasket.
9. Porous cushion cylinder according to claim 1, characterized in that the piston is provided with a support ring.
10. The multi-hole cushion hydraulic cylinder according to claim 1, wherein the other end of the piston is provided with a cushion column having a diameter smaller than the inner diameter of the cylinder body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920483074.3U CN210013881U (en) | 2019-04-10 | 2019-04-10 | Porous buffering hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920483074.3U CN210013881U (en) | 2019-04-10 | 2019-04-10 | Porous buffering hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210013881U true CN210013881U (en) | 2020-02-04 |
Family
ID=69314824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920483074.3U Expired - Fee Related CN210013881U (en) | 2019-04-10 | 2019-04-10 | Porous buffering hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210013881U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111946691A (en) * | 2020-07-16 | 2020-11-17 | 中国铁建重工集团股份有限公司 | Hydraulic cylinder, centering clamping hydraulic system, clamping device and drill jumbo |
-
2019
- 2019-04-10 CN CN201920483074.3U patent/CN210013881U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111946691A (en) * | 2020-07-16 | 2020-11-17 | 中国铁建重工集团股份有限公司 | Hydraulic cylinder, centering clamping hydraulic system, clamping device and drill jumbo |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200204 |
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| CF01 | Termination of patent right due to non-payment of annual fee |