Hydraulic oil cylinder convenient for stroke adjustment

Abstract

The utility model relates to the technical field of hydraulic oil cylinders, and discloses a hydraulic oil cylinder convenient for stroke adjustment, which comprises an oil cylinder main body, a dustproof ring, a piston rod, a piston assembly, a fixing assembly, an elastic assembly and a buffer assembly, a dustproof ring is arranged at the top of the oil cylinder body, the piston rod is slidably embedded in the oil cylinder body, and the piston assembly is embedded in the piston rod. The fixing assembly is arranged at the end of the piston rod, the elastic assembly is installed on the fixing assembly, and the buffering assembly is arranged at the bottom end of the oil cylinder body. According to the oil cylinder, the elastic assembly is arranged, and the elastic rubber layer, the spring, the metal gasket, the second spring and the second rubber layer in the elastic assembly cooperatively operate, so that when the piston rod is close to an external obstacle at the tail end of the stroke, impact force can be buffered, and equipment is prevented from being damaged by hard impact; buffering is strengthened, supporting is provided for the piston rod, the performance of the oil cylinder in the scene needing buffering is optimized, and the production requirement is better met.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder technology, specifically to a hydraulic cylinder that is easy to adjust the stroke. Background Technology

[0002] A patent document with publication number CN220185507U discloses a novel hydraulic cylinder with adjustable stroke. The novel hydraulic cylinder with adjustable stroke includes: a hydraulic cylinder barrel, a cylinder base fixedly mounted at one end of the cylinder barrel, a connecting block fixedly mounted on one side of the cylinder base, a fixed plate fixedly mounted on the other side of the connecting block, the fixed plate having multiple through holes, and a cylinder cover fixedly mounted at the other end of the hydraulic cylinder barrel, the cylinder cover having multiple screws. By adjusting the space between the push block and the piston through an adjustment mechanism, and by injecting oil into the hydraulic cylinder barrel through an oil injection pipe, the position of the oil inlet is changed, thereby increasing the adjustable range of the hydraulic cylinder stroke, reducing limitations, and expanding its applicability. Furthermore, it is equipped with a first sealing ring, a second sealing ring, and a rubber gasket to increase the sealing performance during movement and improve its service life.

[0003] However, when the above-mentioned solutions and existing technologies are applied to precision instrument processing for precise pushing and some mechanical actions that are sensitive to impact and require buffering, the design of buffering elasticity still has some shortcomings. For some impact-sensitive scenarios, the lack of shock-absorbing components may affect production. Therefore, optimization and improvement are possible.

[0004] Therefore, this utility model proposes a hydraulic cylinder with easy stroke adjustment to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a hydraulic cylinder with easily adjustable stroke to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a hydraulic cylinder with easy stroke adjustment, comprising a cylinder body, a dust seal, a piston rod, a piston assembly, a fixing assembly, an elastic assembly, and a buffer assembly;

[0007] A dustproof ring is provided on the top of the cylinder body, the piston rod is adapted to slide and fit into the inside of the cylinder body, and the piston assembly is fitted onto the piston rod;

[0008] The fixing component is located at the end of the piston rod, the elastic component is fixedly installed on the fixing component, and the buffer component is located at the bottom end of the cylinder body.

[0009] Preferably, the piston in the piston assembly is fitted onto the piston rod, the piston is provided with a dirt-proof ring, and the piston is provided with an anti-wear ring in the middle.

[0010] Preferably, the fixing ring in the fixing assembly is fixedly disposed at the end of the piston rod, the piston rod is uniformly provided with threads, and the fixing ring is threadedly connected to the threads.

[0011] Preferably, the elastic rubber layer in the elastic component is fixedly disposed on the fixing ring, and a spring is uniformly fixedly disposed inside the elastic rubber layer, and a metal washer is fixedly connected to the other end of the spring.

[0012] Preferably, a second spring is fixedly disposed inside the metal gasket of the elastic component, and a second rubber layer is fixedly connected to the other end of the second spring. Both the metal gasket and the second rubber layer are fixed to the end of the fixing ring.

[0013] Preferably, the buffer layer in the buffer assembly is fixedly disposed at the bottom end of the cylinder body, and buffer pads are uniformly disposed on the buffer layer.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting up an elastic component, the internal elastic rubber layer, spring, metal gasket, and second spring and second rubber layer work together to effectively buffer the impact force when the piston rod approaches an external obstacle at the end of its stroke, avoiding damage to the equipment from hard impacts. Especially in the fine pushing scenario of precision instrument processing, it can reduce interference to the precision calibration of the instrument. The buffer layer and buffer gasket in the buffer component are fixed to the bottom end of the cylinder body, further enhancing the buffering performance and providing good buffer support for the piston rod. This optimizes the working performance of the hydraulic cylinder in the scenario requiring buffering, enabling it to better meet production needs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0017] Figure 3 This is a cross-sectional schematic diagram of the elastic component of this utility model;

[0018] Figure 4 This is a schematic diagram of the buffer component of this utility model.

[0019] In the diagram: 1. Hydraulic cylinder body; 2. Dustproof ring; 3. Piston rod; 4. Piston assembly; 5. Fixing assembly; 6. Elastic assembly; 401. Piston; 402. Anti-fouling ring; 403. Anti-wear ring; 501. Fixing ring; 502. Thread; 601. Elastic rubber layer; 602. Spring; 603. Metal gasket; 604. Second spring; 605. Second rubber layer; 7. Buffer assembly; 701. Buffer gasket; 702. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some embodiments of this utility model, not all embodiments, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. The technical solutions in the embodiments of this utility model will be clearly and completely described below.

[0021] Example 1: Please refer to Figures 1 to 2 A hydraulic cylinder with adjustable stroke includes a cylinder body 1, a dustproof ring 2, a piston rod 3, a piston assembly 4, a fixing assembly 5, an elastic assembly 6, and a buffer assembly 7. The top of the cylinder body 1 is provided with a dustproof ring 2, the piston rod 3 is adapted to slide and be embedded inside the cylinder body 1, and the piston assembly 4 is embedded on the piston rod 3. The fixing assembly 5 is provided at the end of the piston rod 3, the elastic assembly 6 is fixedly installed on the fixing assembly 5, and the buffer assembly 7 is provided at the bottom end of the cylinder body 1.

[0022] The piston 401 in the piston assembly 4 is adapted to be fitted onto the piston rod 3. The piston 401 is provided with a dirt-proof ring 402 and an anti-wear ring 403 is provided in the middle of the piston 401.

[0023] When in use, when the hydraulic system is started, hydraulic oil flows into the cylinder through the oil inlet of the cylinder body 1. The pressure is quickly applied to the piston assembly 4, pushing the piston 401 and causing the piston rod 3 to extend outward. At this time, the dust seal 2 plays a key role in blocking dust, ensuring that only pure hydraulic oil enters the cylinder. The anti-fouling ring 402 on the piston 401 tightly protects the gap between the piston and the cylinder, preventing impurities from interfering with the movement. The anti-wear ring 403 makes the movement of the piston 401 smoother. The three work together to ensure the stable and efficient operation of the hydraulic cylinder, laying a solid foundation for subsequent work tasks.

[0024] Example 2: Based on Example 1, please refer to... Figures 2 to 3The fixing ring 501 in the fixing component 5 is fixedly installed at the end of the piston rod 3. The piston rod 3 is evenly provided with threads 502, and the fixing ring 501 is threadedly connected to the threads 502.

[0025] The elastic rubber layer 601 in the elastic component 6 is fixedly mounted on the fixing ring 501. A spring 602 is uniformly fixedly mounted inside the elastic rubber layer 601. A metal washer 603 is fixedly connected to the other end of the spring 602.

[0026] In applications where impact is a significant concern, such as the precise pushing stage in precision instrument manufacturing, when the piston rod 3 is precisely pushed to the designated position according to a preset program, the elastic component 6 begins to function. The elastic rubber layer 601 first contacts the external obstruction, using its elastic deformation to buffer a portion of the impact force. Then, the spring 602 is compressed, converting the remaining impact force into elastic potential energy for storage. The metal gasket 603 effectively disperses the pressure transmitted by the spring 602, preventing deformation or damage to the end of the piston rod 3 due to uneven force distribution. This ensures that the silicon wafer can be positioned smoothly and precisely, guaranteeing the high precision requirements of precision instrument manufacturing.

[0027] A second spring 604 is fixedly installed inside the metal gasket 603 in the elastic component 6. A second rubber layer 605 is fixedly connected to the other end of the second spring 604. Both the metal gasket 603 and the second rubber layer 605 are fixed to the end of the fixing ring 501.

[0028] The buffer layer 701 in the buffer assembly 7 is fixedly installed at the bottom end of the cylinder body 1, and buffer pads 702 are evenly arranged on the buffer layer 701.

[0029] In operation, after the piston rod 3 completes its outward pushing task, it begins its return stroke. As it approaches the bottom of the cylinder body 1, the buffer assembly 7 responds quickly. The buffer layer 701, utilizing its porous structure and elasticity, absorbs the impact force from the piston rod 3 over a large area, distributing its energy into various pores. Next, the buffer pad 702 takes effect, further subdividing the impact force initially dispersed by the buffer layer 701 and evenly distributing it to the contact surface at the bottom of the cylinder body 1, effectively reducing the vibration and damage caused by the impact between the piston rod 3 and the bottom of the cylinder body 1. Simultaneously, the second spring 604 and the second rubber layer 605 in the elastic assembly 6 also work together to buffer the impact. The second rubber layer 605, with its softness, buffers part of the impact force, while the second spring 604 further absorbs energy. Together with the buffer assembly 7, they ensure the smooth return of the piston rod 3, extending the service life of the hydraulic cylinder and enabling it to adapt to more complex working conditions.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydraulic cylinder with easily adjustable stroke, characterized in that: It includes the cylinder body (1), dust seal (2), piston rod (3), piston assembly (4), fixed assembly (5), elastic assembly (6), and buffer assembly (7); The top of the cylinder body (1) is provided with a dustproof ring (2), the piston rod (3) is adapted to slide and fit into the inside of the cylinder body (1), and the piston assembly (4) is fitted onto the piston rod (3); The fixing component (5) is located at the end of the piston rod (3), the elastic component (6) is fixedly installed on the fixing component (5), and the buffer component (7) is located at the bottom end of the cylinder body (1).

2. The hydraulic cylinder with easily adjustable stroke according to claim 1, characterized in that: The piston (401) in the piston assembly (4) is adapted to be fitted onto the piston rod (3). The piston (401) is provided with a dirt-proof ring (402) and an anti-wear ring (403) is provided in the middle of the piston (401).

3. The hydraulic cylinder with easily adjustable stroke according to claim 1, characterized in that: The fixing ring (501) in the fixing component (5) is fixedly disposed at the end of the piston rod (3). The piston rod (3) is uniformly provided with threads (502), and the fixing ring (501) is threadedly connected to the threads (502).

4. The hydraulic cylinder with easily adjustable stroke according to claim 1, characterized in that: The elastic rubber layer (601) in the elastic component (6) is fixedly disposed on the fixing ring (501), and a spring (602) is uniformly fixedly disposed inside the elastic rubber layer (601). A metal washer (603) is fixedly connected to the other end of the spring (602).

5. A hydraulic cylinder with easily adjustable stroke according to claim 4, characterized in that: The metal gasket (603) in the elastic component (6) is fixedly provided with a second spring (604), and a second rubber layer (605) is fixedly connected to the other end of the second spring (604). The metal gasket (603) and the second rubber layer (605) are both fixed to the end of the fixing ring (501).

6. The hydraulic cylinder with easily adjustable stroke according to claim 1, characterized in that: The buffer layer (701) in the buffer assembly (7) is fixedly installed at the bottom end of the cylinder body (1), and buffer pads (702) are evenly arranged on the buffer layer (701).

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