CN218407991U - Hydraulic cylinder buffer structure - Google Patents
Hydraulic cylinder buffer structure Download PDFInfo
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- CN218407991U CN218407991U CN202222244955.4U CN202222244955U CN218407991U CN 218407991 U CN218407991 U CN 218407991U CN 202222244955 U CN202222244955 U CN 202222244955U CN 218407991 U CN218407991 U CN 218407991U
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- buffer
- cylinder body
- guide sleeve
- piston
- piston rod
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Abstract
The utility model discloses a pneumatic cylinder buffer structure in pneumatic cylinder technical field aims at solving among the prior art that the buffer structure reliability is not high, and processes difficult scheduling problem, and it includes: the hydraulic cylinder comprises a cylinder body, a piston rod and a piston, wherein the piston is sleeved at the end part of the piston rod, the piston rod is arranged in the cylinder body, a guide sleeve is arranged in the cylinder body, an oil port used for being communicated with an external hydraulic system is arranged on the guide sleeve, a buffer sleeve is arranged on one side, close to the guide sleeve, of the piston, and the buffer sleeve is sleeved on the piston rod; the periphery is equipped with the mounting groove on the uide bushing, be equipped with the buffering ring in the mounting groove. The utility model discloses the resistance to pressure is good, makes life obtain promoting, can promote buffer gear's reliability.
Description
Technical Field
The utility model relates to a pneumatic cylinder buffer structure belongs to pneumatic cylinder technical field.
Background
In the operation process of the hydraulic cylinder, when a piston rod reaches the stroke end, if the operation speed is high, the piston is easy to cause mechanical impact with a guide sleeve, and great impact pressure and noise are generated, so that a certain buffer device is required to be arranged at the stroke end of the hydraulic cylinder to reduce the mechanical impact.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome not enough among the prior art, provide a pneumatic cylinder buffer gear, the resistance to pressure is good, makes life obtain promoting, can promote buffer gear's reliability.
In order to achieve the purpose, the utility model adopts the following technical proposal: the utility model provides a pneumatic cylinder buffer structure, includes cylinder body, piston rod and piston, the piston rod tip is located to the piston bush, inside the cylinder body was located to the piston rod, the inside uide bushing that is equipped with of cylinder body, be equipped with the hydraulic fluid port that is used for with outside hydraulic system intercommunication on the uide bushing, one side that the piston is close to the uide bushing is equipped with the cushion collar, the cushion collar cover is located on the piston rod. The periphery is equipped with the mounting groove on the uide bushing, be equipped with the buffering ring in the mounting groove.
Optionally, the buffer ring is provided with a plurality of pressure relief grooves, and the pressure relief grooves are uniformly distributed on one side of the buffer ring close to the piston.
Optionally, a throttling opening for draining the oil supply liquid is further formed in the buffer ring.
Optionally, the outer peripheral surface of the guide sleeve is provided with an external thread structure, the cylinder body is provided with an internal thread structure matched with the external thread structure of the guide sleeve, and the guide sleeve is in threaded connection with the cylinder body.
Optionally, the guide sleeve is located at the right side of the oil port and is in large clearance fit with the cylinder body, and the guide sleeve is located at the left side of the oil port and is in small clearance fit with the cylinder body.
Optionally, the inner circumferential surface of the cushion sleeve is stepped.
Compared with the prior art, the utility model discloses the beneficial effect who reaches:
the buffering structure provided by the utility model can make the hydraulic cylinder stop at the end of the stroke by reducing the speed, reduce the action impact, effectively prevent the mechanical impact between the piston and the guide sleeve, and generate great impact pressure and noise;
the utility model uses the buffer ring to replace the O-shaped ring or dumbbell seal in the existing structure, and the buffer ring is provided with the throttle orifice and the pressure relief groove, so that the pressure resistance is good, the service life is prolonged, and the buffer structure is more reliable; the guide sleeve on the right side of the oil port is in large clearance fit with the cylinder body, so that the fit length of the guide sleeve is reduced, and the assembly is more convenient;
the utility model discloses the part that uses, the processing degree of difficulty like uide bushing and cushion collar etc. is low, and economic suitability is stronger.
Drawings
Fig. 1 is a schematic cross-sectional structural view of a hydraulic cylinder cushion structure in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a cushion ring of the hydraulic cylinder cushion structure according to an embodiment of the present invention;
in the figure: 1 cylinder body, 2 piston rods, 3 pistons, 4 guide sleeves, 5 oil ports, 6 buffer sleeves, 7 buffer rings, 8 pressure relief grooves and 9 throttling ports.
Detailed Description
The present invention will be further described with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
Example 1:
as shown in fig. 1, the embodiment of the present invention provides a hydraulic cylinder buffer mechanism, which includes: cylinder body 1, piston rod 2 and piston 3, piston rod 2 tip are located to 3 covers of piston, and inside 1 of cylinder body was located to piston rod 2, 1 inside uide bushing 4 that is equipped with of cylinder body is equipped with the external screw thread structure to 4 outer peripheral faces of cover, and cylinder body 1 is equipped with the internal thread structure with the external screw thread structure matched with of uide bushing 4, uide bushing 4 and 1 threaded connection of cylinder body.
An oil port used for being communicated with an external hydraulic system is arranged on the guide sleeve 4, the contact part of the guide sleeve 4, which is positioned on the right side part of the oil port, and the cylinder body 1 is in large clearance fit, and the contact part of the guide sleeve 4, which is positioned on the left side part of the oil port, and the cylinder body 1 is in small clearance fit, and is a sealing area.
One side of the piston 3 close to the guide sleeve 4 is provided with a buffer sleeve 6 which is sleeved on the piston rod 2, and the inner peripheral surface of the buffer sleeve 6 is designed into a step shape. When the piston rod 2 moves, the gap size between the buffer sleeve 6 and the guide sleeve 4 is changed to perform the leakage operation.
Example 2:
as shown in fig. 2, in addition to embodiment 1, in this embodiment, an installation groove is further provided on the outer periphery of the guide sleeve 4, a cushion ring 7 is provided in the installation groove, and the inner peripheral surface thereof is stepped. The buffer ring 7 is provided with a plurality of pressure relief grooves 8, the pressure relief grooves 8 are uniformly distributed on one side of the buffer ring 7 close to the piston 3, the number of the pressure relief grooves can be 4, the pressure relief grooves are not limited to the number, and the pressure relief grooves can be formed in proper number according to actual needs. And a throttling port 9 for draining the oil supply liquid is also formed in the buffer ring 7, so that the oil supply liquid can be drained conveniently.
The utility model discloses a theory of operation does: with reference to fig. 1, after the piston rod 2 moves leftwards to perform a buffer area, the step of the buffer sleeve 6 is tightly attached to the matching surface of the piston rod 2, the buffer sleeve 6 is in small-gap fit with the guide sleeve 4, the buffer ring 7 is opened at the moment, and is tightly attached to the left side of the cylinder body 1 and the mounting groove to form a closed area, a high-pressure area is established, and the oil is discharged from the small gap formed by matching the throttling orifice with the guide sleeve 4 and the buffer sleeve 6 at the moment.
When the piston rod 2 moves rightwards, the buffer ring 7 is attached to the right side of the mounting groove, and oil passes through the pressure relief groove, the guide sleeve 4 and the large gap matched with the cylinder body 1, so that the oil cylinder is enabled to be started quickly.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.
Claims (6)
1. The utility model provides a pneumatic cylinder buffer structure, includes cylinder body (1), piston rod (2) and piston (3), piston rod (2) tip is located in piston (3) cover, inside cylinder body (1) was located in piston rod (2), its characterized in that: a guide sleeve (4) is arranged inside the cylinder body (1), an oil port used for being communicated with an external hydraulic system is formed in the guide sleeve (4), a buffer sleeve (6) is arranged on one side, close to the guide sleeve (4), of the piston (3), and the buffer sleeve (6) is sleeved on the piston rod (2);
the periphery is equipped with the mounting groove on uide bushing (4), be equipped with cushion ring (7) in the mounting groove.
2. The cushion structure of claim 1, wherein: the buffer ring (7) is provided with a plurality of pressure relief grooves (8), and the pressure relief grooves (8) are uniformly distributed on one side, close to the piston (3), of the buffer ring (7).
3. A cushioning structure of a hydraulic cylinder according to claim 2, characterized in that: and the buffer ring (7) is also provided with a throttling port (9) for draining oil supply liquid.
4. The cushion structure of claim 1, wherein: the outer peripheral face of the guide sleeve (4) is provided with an external thread structure, the cylinder body (1) is provided with an internal thread structure matched with the external thread structure of the guide sleeve (4), and the guide sleeve (4) is in threaded connection with the cylinder body (1).
5. The cushion structure of claim 4, wherein: the guide sleeve (4) is positioned on the right side part of the oil port and is in large clearance fit with the cylinder body (1), and is positioned on the left side part of the oil port and is in small clearance fit with the cylinder body (1).
6. The cushion structure of claim 1, wherein: the inner peripheral surface of the buffer sleeve (6) is designed to be step-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222244955.4U CN218407991U (en) | 2022-08-25 | 2022-08-25 | Hydraulic cylinder buffer structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222244955.4U CN218407991U (en) | 2022-08-25 | 2022-08-25 | Hydraulic cylinder buffer structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218407991U true CN218407991U (en) | 2023-01-31 |
Family
ID=85027578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222244955.4U Active CN218407991U (en) | 2022-08-25 | 2022-08-25 | Hydraulic cylinder buffer structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218407991U (en) |
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2022
- 2022-08-25 CN CN202222244955.4U patent/CN218407991U/en active Active
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