CN220816124U - Hydraulic cylinder with buffering performance - Google Patents
Hydraulic cylinder with buffering performance Download PDFInfo
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- CN220816124U CN220816124U CN202322533219.5U CN202322533219U CN220816124U CN 220816124 U CN220816124 U CN 220816124U CN 202322533219 U CN202322533219 U CN 202322533219U CN 220816124 U CN220816124 U CN 220816124U
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- fixedly connected
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- piston
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- 230000003139 buffering effect Effects 0.000 title claims abstract description 26
- 238000007789 sealing Methods 0.000 claims abstract description 20
- 230000000694 effects Effects 0.000 claims 1
- 239000012530 fluid Substances 0.000 claims 1
- 230000007306 turnover Effects 0.000 claims 1
- 230000010349 pulsation Effects 0.000 abstract description 5
- 238000004146 energy storage Methods 0.000 abstract description 3
- 230000035939 shock Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 9
- 238000009434 installation Methods 0.000 description 8
- 239000010720 hydraulic oil Substances 0.000 description 5
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
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Abstract
The utility model provides a hydraulic cylinder with buffering performance, and belongs to the technical field of hydraulic cylinders. The hydraulic cylinder is respectively and thoroughly connected with the base and the mounting cylinder, a piston rod is movably arranged in the hydraulic cylinder, and oil inlet and outlet ports are respectively and thoroughly arranged on the base and the mounting cylinder; through cooperation use between safety collar, piston sealing ring, buffer and the slip stop device, can also increase hydraulic system to the hydraulic pressure atress of piston rod when having guaranteed that the piston rod can smooth motion in the hydraulic cylinder body, avoided hydraulic pressure pulsation and the valve to open the influence of hydraulic shock when closing to the piston rod, through the cooperation use between the slip limit structure and the buffer, the device can also retrieve partial energy through the energy storage principle of spring when providing multistage buffering to the piston rod, improved energy utilization, compared with existing equipment, more energy-conserving high efficiency.
Description
Technical Field
The utility model relates to the technical field of hydraulic cylinders, in particular to a hydraulic cylinder with buffering performance.
Background
Hydraulic cylinders are a common type of hydraulic actuator used to convert hydraulic energy into mechanical energy. It consists of a sealed metal cylinder and a piston. When hydraulic oil enters the cylinder, the piston is forced to move, thereby creating force and motion. Hydraulic cylinders are widely used in various industrial fields such as mechanical manufacturing, construction engineering, metallurgy, etc. The device has the advantages of simple structure, high reliability, large bearing capacity and the like, and is widely applied to various engineering and mechanical equipment.
However, the existing hydraulic cylinder has the following disadvantages when in use: firstly, when the mass of a moving part is large and the moving speed is high, the piston rod has large momentum due to the action of inertia force, and when the piston rod moves to the terminal end of the cylinder barrel, the piston rod can always mechanically collide with the cylinder cover, and long-term collision can possibly cause oil leakage of the cylinder body; secondly, because the hydraulic system has certain hydraulic pulsation and hydraulic impact when the valve is opened and closed, the piston rod movement process is not necessarily stable and continuous, larger vibration and noise can be caused, the working precision and the service life of the mechanism are influenced, and the whole oil supply process is basically constant pressure after a high-pressure oil source of the hydraulic system is opened, so that the energy utilization rate is not high.
How to develop a hydraulic cylinder with buffering performance to improve these problems is a problem to be solved urgently by those skilled in the art.
Disclosure of utility model
In order to remedy the above-mentioned drawbacks, the present utility model provides a hydraulic cylinder with cushioning properties, which aims to improve the problems mentioned in the background above.
The utility model is realized in the following way:
The utility model provides a hydraulic cylinder with buffering performance, which comprises a hydraulic cylinder body, a base and an installation cylinder, wherein the hydraulic cylinder body is respectively and thoroughly connected with the base and the installation cylinder, a piston rod is movably arranged in the hydraulic cylinder body, oil inlet and outlet ports are respectively and thoroughly arranged on the base and the installation cylinder, a safety ring is fixedly connected to the top end of the hydraulic cylinder body, a fixed sleeve is fixedly connected to the lower wall of the safety ring, a reset spring is fixedly connected to the bottom of an inner cavity of the fixed sleeve, the fixed sleeve is slidably connected with a pressure rod through the reset spring, a piston is fixedly connected to the end part of the piston rod, a piston sealing ring is fixedly connected to the edge of the piston, a buffering device is fixedly connected to the bottom of the base, a sliding groove is formed in the bottom of the base, and a sliding limiting device is arranged in the sliding groove.
Preferably, the buffer device comprises a telescopic sleeve fixedly connected with the inner wall of the base, a pressure spring is fixedly connected with the bottom of the telescopic sleeve, the telescopic sleeve is slidably connected with a telescopic rod through the pressure spring, and a bearing plate is fixedly connected with the end part of the telescopic rod.
Preferably, the lateral wall fixedly connected with installation piece under the bearing plate, swing joint has the connecting rod on the installation piece, two of homonymy fixedly connected with connecting spring between the connecting rod, the bearing plate cross-section is multistage arc setting, there is the clearance between bearing plate and the hydraulic cylinder body inner wall.
Preferably, the sliding limiting device comprises a limiting slide rod fixedly connected with the inner wall of the chute and a limiting slide block in sliding connection with the limiting slide rod, and a limiting spring is fixedly connected between the side wall of the limiting slide block and the side wall of the chute.
Preferably, the other end of the connecting rod far away from the mounting block is rotationally connected with the limiting slide block through the mounting bolt, and the limiting slide block positioned on the limiting slide rod is symmetrically arranged.
Preferably, the edge of the piston sealing ring abuts against the inner wall of the hydraulic cylinder body, a round hole is formed in the safety ring, the round hole is matched with the piston rod, and the fixed sleeve is in sealing arrangement with the pressure rod and the telescopic sleeve is in sealing arrangement with the telescopic rod.
The beneficial effects of the utility model are as follows:
Through the cooperation use between the safety ring, the piston sealing ring and the reset spring, when the piston rod moves, the edge of the piston sealing ring is propped against the inner wall of the hydraulic cylinder body, so that the hydraulic pressure stress of the hydraulic system on the piston rod can be increased while the piston rod can move in the hydraulic cylinder in a stable manner, the influence of hydraulic pulsation and hydraulic impact on the piston rod when the valve is opened and closed is avoided, and due to the arrangement of the piston sealing ring and the safety ring, the piston rod cannot mechanically collide with the cylinder cover, the situation that the oil leakage of the cylinder body possibly occurs due to long-term collision between the piston rod and the cylinder cover of the traditional device is avoided, the working precision of the device is improved, and the service life of the device is prolonged;
When the piston rod moves upwards, the reset spring is in a compression state, when the piston rod switches the moving direction, the reset spring recovers deformation to apply downward elasticity to the piston rod, accordingly, when the piston rod moves downwards, the pressure spring, the connecting spring and the limiting spring which are arranged on the buffer device can generate corresponding deformation at the same time, when the piston rod switches the moving direction, the pressure spring, the connecting spring and the limiting spring recover deformation to provide upward elasticity for the piston rod, multistage buffering of the piston rod is achieved, the situation that the bottom of the piston rod directly collides with the inner wall of the base is avoided, the device can provide multistage buffering for the piston rod through the cooperation between the sliding limiting structure and the buffer device, and meanwhile partial energy can be recovered through the energy storage principle of the spring, so that the energy utilization rate is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an overall structure of a hydraulic cylinder with buffering performance according to an embodiment of the present utility model;
FIG. 2 is a schematic cross-sectional view of a hydraulic cylinder with damping capability according to an embodiment of the present utility model;
fig. 3 is an enlarged schematic view of a hydraulic cylinder a with buffering performance according to an embodiment of the present utility model;
fig. 4 is an enlarged schematic view of a hydraulic cylinder B with buffering performance according to an embodiment of the present utility model;
FIG. 5 is a schematic view of an internal structure of a hydraulic cylinder with a damping performance according to an embodiment of the present utility model;
fig. 6 is a schematic structural diagram of a hydraulic cylinder buffering device and a sliding limiting device with buffering performance according to an embodiment of the present utility model.
In the figure: 1. a hydraulic cylinder; 2. a base; 3. a mounting cylinder; 4. a piston rod; 5. a piston; 501. a piston seal ring; 6. a telescoping sleeve; 601. a pressure spring; 602. a telescopic rod; 7. a bearing plate; 8. a fixed sleeve; 801. a return spring; 802. a pressure rod; 9. a mounting block; 901. a connecting rod; 902. a connecting spring; 903. a limit sliding block; 10. a chute; 1001. a limit spring; 1002. a limit slide bar; 11. a safety ring.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.
Examples
Referring to fig. 1-4, a hydraulic cylinder with buffering performance comprises a hydraulic cylinder body 1, a base 2 and an installation cylinder 3, wherein the hydraulic cylinder body 1 is respectively and thoroughly connected with the base 2 and the installation cylinder 3, a piston rod 4 is movably arranged in the hydraulic cylinder body 1, the base 2 and the installation cylinder 3 are respectively and thoroughly provided with an oil inlet and outlet, the top end of the hydraulic cylinder body 1 is fixedly connected with a safety ring 11, the safety ring 11 can limit the maximum travel of the piston rod 4, the piston rod 4 can be prevented from falling out of a working cavity under certain limit conditions, a mechanism can work normally, the lower wall of the safety ring 11 is fixedly connected with a fixed sleeve 8, the bottom of the inner cavity of the fixed sleeve 8 is fixedly connected with a return spring 801, the fixed sleeve 8 is slidably connected with a pressure rod 802 through the return spring 801, the piston rod 4 can be buffered, the condition that the piston rod 4 directly collides with a cylinder cover is avoided, the end part of the piston rod 4 is fixedly connected with a piston 5, the edge of the piston 5 is fixedly connected with a piston sealing ring 501, the bottom of the base 2 is fixedly connected with a buffering device, the bottom of the base 2 is provided with a sliding chute 10, and a sliding limiting device is arranged in the sliding chute 10;
Further, the buffer device comprises a telescopic sleeve 6 fixedly connected with the inner wall of the base 2, a pressure spring 601 is fixedly connected to the bottom of the telescopic sleeve 6, a telescopic rod 602 is slidably connected to the telescopic sleeve 6 through the pressure spring 601, a bearing plate 7 is fixedly connected to the end of the telescopic rod 602, when the bottom of the piston rod 4 impacts the bearing plate 7, the bearing plate 7 moves downwards at the moment, and the pressure spring 601 enters a compressed state;
It should be noted that: the lower side wall of the bearing plate 7 is fixedly connected with a mounting block 9, the mounting block 9 is movably connected with a connecting rod 901, a connecting spring 902 is fixedly connected between the two connecting rods 901 on the same side, the section of the bearing plate 7 is in a multi-section arc-shaped arrangement, a gap exists between the bearing plate 7 and the inner wall of the hydraulic cylinder body 1, and the hydraulic oil can be ensured to act on the piston 5 and the piston sealing ring 501 beyond the bearing plate 7;
Referring to fig. 1-6, the sliding limiting device comprises a limiting slide bar 1002 fixedly connected with the inner wall of a chute 10 and a limiting slide bar 903 slidingly connected with the limiting slide bar 1002, a limiting spring 1001 is fixedly connected between the side wall of the limiting slide bar 903 and the side wall of the chute 10, the other end of a connecting rod 901 far away from a mounting block 9 is rotationally connected with the limiting slide bar 903 through a mounting bolt, and the limiting slide bars 903 positioned on the limiting slide bar 1002 are symmetrically arranged;
It should be noted that: the edge of the piston sealing ring 501 is propped against the inner wall of the hydraulic cylinder body 1, so that the piston rod 4 can move stably in the hydraulic cylinder body 1, the hydraulic stress of a hydraulic system on the piston 5 can be increased, the influence of hydraulic pulsation and hydraulic impact when a valve is opened and closed on the piston rod 4 is avoided, a round hole is formed in the safety ring 11 and is matched with the piston rod 4, and the sealing arrangement between the fixed sleeve 8 and the pressure rod 802 and between the telescopic sleeve 6 and the telescopic rod 602 is realized, so that the liquid in the hydraulic cylinder body 1 can not enter the fixed sleeve 8 and the telescopic sleeve 6.
The working principle of the hydraulic cylinder with the buffering performance is as follows: starting an external pump, wherein the filled hydraulic oil is driven by the external pump to generate higher pressure, the pressure acts on the piston 5 and the piston sealing ring 501 through an oil inlet port to drive the piston 5 and the piston sealing ring 501 to generate axial movement to push the piston rod 4 to move towards one direction, the edge of the piston sealing ring 501 is propped against the inner wall of the hydraulic cylinder body 1, so that the piston rod 4 can move in the hydraulic cylinder body 1 stably and simultaneously the hydraulic pressure stress of a hydraulic system on the piston rod 4 can be increased, the influence of hydraulic pulsation and hydraulic impact when a valve is opened and closed on the piston rod 4 can be avoided, when the piston rod 4 is gradually extended to the maximum arm length, the piston sealing ring 501 can be gradually extruded to a pressure rod 802, the pressure rod 802 can slide in the fixed sleeve 8, the return spring 801 is in a compressed state, the piston rod 4 can be buffered, and when the mass of a moving part is large and the moving speed is high, the piston rod 4 has great momentum due to the action of inertia force, the piston 5 and the piston sealing ring 501 can not mechanically collide with a cylinder cover, the situation that oil leakage of the cylinder cover of the piston rod 4 and the cylinder cover of the traditional device can be avoided, and the working accuracy of the device is prolonged, and the service life of the device is prolonged;
When hydraulic oil is discharged to an oil return interface and the pressure is reduced, the piston rod 4 moves in the opposite direction, when the bottom of the piston rod 4 contacts with the upper wall of the bearing plate 7 in the hydraulic cylinder body 1, the bearing plate 7 moves downwards at the moment, the connecting spring 902 correspondingly stretches under the drive of the connecting rod 901, meanwhile, the limit sliding block 903 also slides to two sides in the sliding chute 10 along the limit sliding rod 1002, the limit sliding block 903 continuously compresses the limit spring 1001 fixedly connected with the side wall of the sliding chute 10, and correspondingly, the telescopic rod 602 also extrudes the pressure spring 601, so that the multistage buffering of the piston rod 4 is realized, and the condition that the bottom of the piston rod 4 directly collides with the inner wall of the base 2 is avoided;
The pressure, speed and position of the piston rod 4 can be controlled by adjusting the pressure and direction of hydraulic oil so as to realize accurate thrust control, the piston rod 4 is controlled to reciprocate, the return spring 801 is in a compressed state when the piston rod 4 moves upwards, when the piston rod 4 switches the moving direction, the return spring 801 is restored to deform so as to apply downward elastic force to the piston rod 4, correspondingly, when the piston rod 4 moves downwards, the pressure spring 601, the connecting spring 902 and the limiting spring 1001 arranged on the buffer device are correspondingly deformed at the same time, when the piston rod 4 switches the moving direction, the pressure spring 601, the connecting spring 902 and the limiting spring 1001 are restored to deform so as to provide upward elastic force for the piston rod 4, and the device can also recover part of energy through the energy storage principle of the spring while providing multistage buffering for the piston rod 4, so that the energy utilization rate is improved.
It should be noted that, specific model specifications of the motor need to be determined by selecting a model according to actual specifications of the device, and a specific model selection calculation method adopts the prior art in the field, so detailed description is omitted.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, and various modifications and variations may be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (6)
1. The utility model provides a pneumatic cylinder with buffer performance, includes hydraulic cylinder body (1), base (2) and mounting cylinder (3), hydraulic cylinder body (1) link up with base (2) and mounting cylinder (3) respectively, a serial communication port, the inside activity of hydraulic cylinder body (1) is equipped with piston rod (4), link up respectively on base (2) and mounting cylinder (3) and be equipped with business turn over hydraulic fluid port, hydraulic cylinder body (1) top fixedly connected with safety ring (11), wall fixedly connected with fixed sleeve (8) under safety ring (11), fixed sleeve (8) inner chamber bottom fixedly connected with reset spring (801), fixed sleeve (8) are through reset spring (801) sliding connection pressure bar (802), piston rod (4) tip fixedly connected with piston (5), piston (5) edge fixedly connected with piston sealing ring (501), base (2) bottom fixedly connected with buffer, base (2) bottom is equipped with spout (10), be equipped with slip stop device in spout (10).
2. The hydraulic cylinder with the buffering performance according to claim 1, wherein the buffering device comprises a telescopic sleeve (6) fixedly connected with the inner wall of the base (2), a pressure spring (601) is fixedly connected with the bottom of the telescopic sleeve (6), a telescopic rod (602) is slidably connected with the telescopic sleeve (6) through the pressure spring (601), and a bearing plate (7) is fixedly connected with the end portion of the telescopic rod (602).
3. The hydraulic cylinder with the buffering performance according to claim 2, wherein a mounting block (9) is fixedly connected to the lower side wall of the bearing plate (7), a connecting rod (901) is movably connected to the mounting block (9), a connecting spring (902) is fixedly connected between the two connecting rods (901) on the same side, the section of the bearing plate (7) is in a multi-section arc-shaped arrangement, and a gap exists between the bearing plate (7) and the inner wall of the hydraulic cylinder body (1).
4. A hydraulic cylinder with buffering performance according to claim 3, wherein the sliding limiting device comprises a limiting slide rod (1002) fixedly connected with the inner wall of the chute (10) and a limiting slide block (903) slidingly connected with the limiting slide rod (1002), and a limiting spring (1001) is fixedly connected between the side wall of the limiting slide block (903) and the side wall of the chute (10).
5. The hydraulic cylinder with buffering performance according to claim 4, wherein the other end of the connecting rod (901) far away from the mounting block (9) is rotationally connected with the limit sliding block (903) through a mounting bolt, and the limit sliding blocks (903) on the limit sliding rod (1002) are symmetrically arranged.
6. The hydraulic cylinder with the buffering performance according to claim 1, wherein the edge of the piston sealing ring (501) abuts against the inner wall of the hydraulic cylinder body (1), a round hole is formed in the safety ring (11), the round hole is matched with the piston rod (4), and sealing arrangement is achieved between the fixing sleeve (8) and the pressure rod (802) and between the telescopic sleeve (6) and the telescopic rod (602).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322533219.5U CN220816124U (en) | 2023-09-19 | 2023-09-19 | Hydraulic cylinder with buffering performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322533219.5U CN220816124U (en) | 2023-09-19 | 2023-09-19 | Hydraulic cylinder with buffering performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220816124U true CN220816124U (en) | 2024-04-19 |
Family
ID=90704606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322533219.5U Active CN220816124U (en) | 2023-09-19 | 2023-09-19 | Hydraulic cylinder with buffering performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220816124U (en) |
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2023
- 2023-09-19 CN CN202322533219.5U patent/CN220816124U/en active Active
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