Double-acting buffer oil cylinder
By designing a combined buffer mechanism and rubber telescopic sleeve in a double-acting oil cylinder, the problem of cushioning springs being easily corroded in harsh oil environments is solved, and the bidirectional smooth cushioning and energy absorption of the piston rod is achieved, extending the service life of the equipment and improving safety.
Patent Information
- Application Number
- CN202422163159.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-04
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-09-04
AI Technical Summary
The buffer spring in the double-acting oil cylinder is in a harsh oil environment for a long time and is susceptible to erosion and corrosion by impurities, moisture and temperature changes, resulting in a decrease in elasticity and durability, affecting the buffering effect and may cause safety hazards.
A double-acting buffering oil cylinder is designed, and the bidirectional smooth buffering and energy absorption of the piston rod is achieved through the combination of the connecting block, the first spring, the first sliding block, the first elastic rod, the contact plate, the moving plate, the fixed plate, the hollow column, the second spring, the second sliding block, the second elastic rod and the rubber telescopic sleeve, and the buffering mechanism is protected by the rubber telescopic sleeve to avoid the influence of oil corrosion.
It effectively slows down the impact between the piston block and the inner wall of the cylinder, avoids mechanical damage and noise pollution, extends the service life of the oil cylinder, and blocks the invasion of impurities and corrosive substances in the oil.
Smart Images
Figure CN222977132U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of double-acting oil cylinders, and specifically relates to a double-acting buffer oil cylinder. Background Technique
[0002] A double-acting buffer oil cylinder is a special hydraulic actuator that combines the bidirectional push-pull function of a double-acting oil cylinder and a buffer device to achieve smooth movement and reduce impact during operation.
[0003] In current industrial applications, the buffer spring in a double-acting oil cylinder is in a harsh oil environment for a long time, which is a problem that cannot be ignored. Factors such as impurities, moisture, and temperature changes in the oil will erode and corrode the material of the spring. In the long run, the elasticity and durability of the spring will be greatly reduced. This will not only affect the consistency of the buffer effect, but may also cause safety hazards such as spring fracture, threatening the normal operation of the equipment. At the same time, the chemical substances in the oil may also react with the coating or material on the surface of the spring, resulting in phenomena such as rust and peeling on the spring surface, further weakening its buffer ability. Therefore, we propose a double-acting buffer oil cylinder. Content of the Utility Model
[0004] The purpose of the utility model is to provide a double-acting buffer oil cylinder to solve the problem proposed in the above background technique that in current industrial applications, the buffer spring in a double-acting oil cylinder is in a harsh oil environment for a long time, which is a problem that cannot be ignored. Factors such as impurities, moisture, and temperature changes in the oil will erode and corrode the material of the spring. In the long run, the elasticity and durability of the spring will be greatly reduced. This will not only affect the consistency of the buffer effect, but may also cause safety hazards such as spring fracture, threatening the normal operation of the equipment. At the same time, the chemical substances in the oil may also react with the coating or material on the surface of the spring, resulting in phenomena such as rust and peeling on the spring surface, further weakening its buffer ability.
[0005] To achieve the above object, the utility model provides the following technical solution: A double-acting buffer oil cylinder, including a cylinder body, on one side of the center inside the cylinder body is movably connected with a piston rod, on one side of the piston rod surface is fixedly installed a piston block, on one side of the piston block is provided a connecting block, on one side of the connecting block are opened three mounting grooves, on one side inside the mounting grooves is fixedly connected a first spring, on one side of the first spring is fixedly connected a first sliding block, on one side of the connecting block is provided a contact plate, at the center of one side of the three first sliding blocks are fixedly connected first elastic rods, between the contact plate and the connecting block is fixedly installed a first rubber telescopic sleeve, on the surface of the piston rod near one side position is fixedly connected a moving plate, on the surface of the piston rod near the other end position is sleeved with a fixing plate, on one side of the fixing plate is fixedly connected a hollow column, on one side inside the hollow column is fixedly connected a second spring, at the center of one side of the second spring is fixedly connected a second sliding block, on one side of the hollow column is provided a contact block, at the center of one side of the second sliding block is fixedly connected a second elastic rod, on one side of the contact block is fixedly installed a second rubber telescopic sleeve.
[0006] Compared with the prior art, the beneficial effects of the utility model are:
[0007] For this double-acting buffer oil cylinder, through the design of the connecting block, the first spring, the first sliding block, the first elastic rod, the contact plate, the moving plate, the fixing plate, the hollow column, the second spring, the second sliding block, the second elastic rod and the contact block, when the piston rod drives the piston block to move to the left, the buffer mechanism on the connecting block can respond quickly. Through the compression and release of the first spring, and the smooth sliding of the first sliding block guided by the first elastic rod, the impact between the piston block and the inner wall of the cylinder body is effectively reduced. When the piston rod moves to the right, the moving plate moves to the right accordingly and finally contacts the fixing plate. As the piston rod is further pushed, the fixing plate receives the pressure from the moving plate, and this pressure is effectively buffered by the second spring inside the hollow column. The force on the fixing plate causes the second elastic rod to be squeezed, thereby pushing the second sliding block to slide inside the hollow column and gradually compressing the second spring. The advantage of this design is that it realizes the smooth buffering and energy absorption when the piston rod moves to the right. The compression process of the second spring is a process of gradually releasing energy, which can effectively reduce the direct impact between the moving plate and the fixing plate, thus avoiding mechanical damage or noise pollution caused by excessive instantaneous impact force. The design of the first rubber telescopic sleeve and the second rubber telescopic sleeve provides a protective effect for the buffer mechanism of this double-acting buffer oil cylinder, effectively avoiding various adverse effects of the oil fluid on the buffer mechanism, avoiding corrosion and rust problems caused by tiny particles, moisture and corrosive chemical substances in the oil fluid to the buffer mechanism, effectively blocking the invasion of impurities and corrosive substances in the oil fluid, and prolonging the service life of this oil cylinder. Description of the Drawings
[0008] Figure 1 This is a schematic structural diagram of the present utility model;
[0009] Figure 2 For the present utility model Figure 1 A partial enlarged view of A in;
[0010] Figure 3 For the present utility model Figure 1 A partial enlarged view of B in;
[0011] Figure 4 This is a three-dimensional structural diagram of the contact plate of the present utility model;
[0012] Figure 5 This is a left view of the structure of the fixing plate of the present utility model;
[0013] Figure 6 This is the front view of the structure of the present utility model.
[0014] In the figure: 1. cylinder block; 2. piston rod; 3. piston block; 4. connecting block; 5. first spring; 6. first sliding block; 7. first elastic rod; 8. contact plate; 9. first rubber expansion sleeve; 10. moving plate; 11. fixing plate; 12. hollow column; 13. second spring; 14. second sliding block; 15. second elastic rod; 16. contact block; 17. second rubber expansion sleeve. Specific embodiments
[0015] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0016] Please refer to Figures 1-6The utility model provides a technical solution: a double-acting buffer cylinder, including a cylinder body 1, a piston rod 2 is movably connected to one side of the center of the cylinder body 1, a piston block 3 is fixedly installed on one side of the surface of the piston rod 2, a connecting block 4 is arranged on one side of the piston block 3, three installation grooves are opened on one side of the connecting block 4, a first spring 5 is fixedly connected to one side of the installation groove, a first sliding block 6 is fixedly connected to one side of the first spring 5, a contact plate 8 is arranged on one side of the connecting block 4, a first spring rod 7 is fixedly connected to the center of one side of the three first sliding blocks 6, and the contact plate 8 is connected to the connecting block 4. A first rubber telescopic sleeve 9 is fixedly installed in the middle, a movable plate 10 is fixedly connected to one side of the surface of the piston rod 2, a fixed plate 11 is sleeved on the other end of the surface of the piston rod 2, a hollow column 12 is fixedly connected to one side of the fixed plate 11, a second spring 13 is fixedly connected to one side of the hollow column 12, a second sliding block 14 is fixedly connected to the center of one side of the second spring 13, a contact block 16 is provided on one side of the hollow column 12, a second elastic rod 15 is fixedly connected to the center of one side of the second sliding block 14, and a second rubber telescopic sleeve 17 is fixedly installed on one side of the contact block 16.
[0017] The outer wall of the piston block 3 contacts the inner wall of the cylinder body 1, one end of the piston rod 2 passes through the outside of the piston block 3 and is fixedly connected to one side of the connecting block 4, and the other end of the piston rod 2 passes through the fixed plate 11 and the outside of the cylinder body 1 in turn, and the injected oil pushes the piston block 3 to move the piston rod 2.
[0018] The outer wall of the first sliding block 6 is in sliding contact with the inner wall of the mounting groove. One end of the three first elastic rods 7 respectively penetrates the outside of the three mounting grooves and is fixedly connected to one side of the contact plate 8. The first elastic rods 7 are subjected to force to drive the first sliding block 6 to slide smoothly inside the mounting groove.
[0019] The first elastic rod 7 is located inside the first rubber expansion sleeve 9, and the first rubber expansion sleeve 9 protects the buffer mechanism on the left side.
[0020] One side of the fixing plate 11 is fixedly connected to one side of the inner wall of the cylinder body 1 , and five hollow columns 12 are arranged in a circular array, thereby ensuring the stability of the right buffer mechanism when subjected to force.
[0021] The outer wall of the second sliding block 14 is slidably connected to the inner wall of the hollow column 12, and one end of the second elastic rod 15 penetrates to the outside of the hollow column 12 and is fixedly connected to the center of one side of the contact block 16. When the contact block 16 is subjected to force, the second elastic rod 15 drives the second sliding block 14 to slide smoothly inside the hollow column 12 and compresses the second spring 13.
[0022] One end of the second rubber expansion sleeve 17 is fixedly connected to one side of the fixing plate 11 , and the hollow column 12 is located inside the second rubber expansion sleeve 17 to protect the right buffer mechanism.
[0023] Working principle: When the piston block 3 drives the piston rod 2 to move to the right, the moving plate 10 moves synchronously with the piston rod 2. When the moving plate 10 contacts the five contact blocks 16 on the fixed plate 11 during the movement, the contact blocks 16 are stressed, causing the second elastic rod 15 to drive the second sliding block 14 to move to the right inside the hollow column 12. The second sliding block 14 compresses the second spring 13 at the same time. Meanwhile, the second rubber telescopic sleeve 17 also expands and contracts with the contact block 16 to buffer the piston rod 2 when it moves to the right. When the piston block 3 drives the piston rod 2 to move to the left, the contact plate 8 on one side of the connecting block 4 contacts the inner wall of the cylinder block 1. The contact plate 8 is stressed, causing the first elastic rod 7 to drive the first sliding block 6 to slide inside the installation groove, thereby compressing the first spring 5 inside the installation groove, and further buffering the force received by the piston rod 2 when it moves to the left. Meanwhile, the first rubber telescopic sleeve 9 also expands and contracts with the movement of the contact plate 8.
[0024] In summary: For this double-acting buffer cylinder, through the design of the connecting block 4, the first spring 5, the first sliding block 6, the first elastic rod 7, the contact plate 8, the moving plate 10, the fixed plate 11, the hollow column 12, the second spring 13, the second sliding block 14, the second elastic rod 15, and the contact block 16, when the piston rod 2 drives the piston block 3 to move to the left, the buffer mechanism on the connecting block 4 can respond quickly. Through the compression and release of the first spring 5, and the smooth sliding of the first sliding block 6 guided by the first elastic rod 7, the impact between the piston block 3 and the inner wall of the cylinder block 1 is effectively reduced. When the piston rod 2 moves to the right, the moving plate 10 moves to the right accordingly and finally contacts the fixed plate 11. As the piston rod 2 is further pushed, the fixed plate 11 receives the pressure from the moving plate 10. This pressure is effectively buffered by the second spring 13 inside the hollow column 12. The force on the fixed plate 11 causes the second elastic rod 15 to be squeezed, which in turn pushes the second sliding block 14 to slide inside the hollow column 12 and gradually compresses the second spring 13. The advantage of this design is that it achieves smooth buffering and energy absorption when the piston rod 2 moves to the right. The compression process of the second spring 13 is a process of gradually releasing energy, which can effectively reduce the direct impact between the moving plate 10 and the fixed plate 11, thereby avoiding mechanical damage or noise pollution caused by excessive instantaneous impact force. The design of the first rubber telescopic sleeve 9 and the second rubber telescopic sleeve 17 provides a protective effect for the buffer mechanism of this double-acting buffer cylinder, effectively avoiding various adverse effects of the oil on the buffer mechanism, and preventing corrosion and rust problems caused by tiny particles, moisture, and corrosive chemical substances in the oil. It effectively blocks the invasion of impurities and corrosive substances in the oil and extends the service life of this cylinder.
[0025] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.
[0026] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A double-acting buffer cylinder, comprising a cylinder body (1), characterized in that: A piston rod (2) is movably connected to one side of the center of the cylinder body (1); a piston block (3) is fixedly mounted on one side of the surface of the piston rod (2); a connecting block (4) is provided on one side of the piston block (3); three mounting grooves are provided on one side of the connecting block (4); a first spring (5) is fixedly connected to one side of the mounting groove; a first sliding block (6) is fixedly connected to one side of the first spring (5); a contact plate (8) is provided on one side of the connecting block (4); a first elastic rod (7) is fixedly mounted at the center of one side of the three first sliding blocks (6); a first rubber telescopic sleeve (9) is fixedly mounted between the contact plate (8) and the connecting block (4); A movable plate (10) is fixedly connected to one side of the surface of the piston rod (2); a fixed plate (11) is sleeved on the other end of the surface of the piston rod (2); a hollow column (12) is fixedly connected to one side of the fixed plate (11); a second spring (13) is fixedly connected to one side of the hollow column (12); a second sliding block (14) is fixedly connected to the center of one side of the second spring (13); a contact block (16) is provided on one side of the hollow column (12); a second elastic rod (15) is fixedly connected to the center of one side of the second sliding block (14); and a second rubber telescopic sleeve (17) is fixedly mounted on one side of the contact block (16).
2. A double-acting buffer cylinder according to claim 1, characterized in that: The outer wall of the piston block (3) contacts the inner wall of the cylinder body (1), one end of the piston rod (2) penetrates the outside of the piston block (3) and is fixedly connected to one side of the connecting block (4), and the other end of the piston rod (2) penetrates the fixing plate (11) and the outside of the cylinder body (1) in sequence.
3. A double-acting buffer cylinder according to claim 1, characterized in that: The outer wall of the first sliding block (6) is in sliding contact with the inner wall of the mounting groove, and one end of the three first elastic rods (7) respectively penetrates the outside of the three mounting grooves and is fixedly connected to one side of the contact plate (8).
4. A double-acting buffer cylinder according to claim 1, characterized in that: The first elastic rod (7) is located inside the first rubber telescopic sleeve (9).
5. A double-acting buffer cylinder according to claim 1, characterized in that: One side of the fixing plate (11) is fixedly connected to one side of the inner wall of the cylinder body (1), and the number of the hollow columns (12) is five, and the five hollow columns (12) are arranged in a ring array.
6. A double-acting buffer cylinder according to claim 1, characterized in that: The outer wall of the second sliding block (14) is slidably connected to the inner wall of the hollow column (12), and one end of the second elastic rod (15) penetrates the outside of the hollow column (12) and is fixedly connected to the center of one side of the contact block (16).
7. A double-acting buffer cylinder according to claim 1, characterized in that: One end of the second rubber expansion sleeve (17) is fixedly connected to one side of the fixed plate (11), and the hollow column (12) is located inside the second rubber expansion sleeve (17).