Hydraulic cylinder cover structure with buffer device

Abstract

The utility model discloses a hydraulic cylinder cover structure with a buffer device, which comprises a mounting plate, a hydraulic cylinder main body and a control box are arranged on the mounting plate, a piston is movably arranged in the hydraulic cylinder main body, one end of the piston extends to the outer side of an object, an anti-impact cover plate is arranged on one side of the hydraulic cylinder main body, and the other end of the piston extends to the outer side of the object. One end of the pushing column penetrates through the anti-impact cover plate and extends to the outer side of the anti-impact cover plate, thrust of the hydraulic cylinder is counteracted through elasticity of the spring, impact force on the base and even the whole anti-impact cover plate is reduced, accordingly, the influence of impact on the whole device is reduced, large-scale vibration is avoided, and the service life of the device is prolonged. In addition, the distance is measured most accurately through liquid, errors caused by time extension are avoided, the service life is long, and the accuracy is high.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic cylinder technology, and specifically relates to a hydraulic cylinder head structure with a buffer device. Background Technology

[0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy, performing linear reciprocating motion (or oscillating motion). It has a simple structure and reliable operation. When used to achieve reciprocating motion, it eliminates the need for a speed reduction device, eliminates transmission backlash, and provides smooth movement. Therefore, it is widely used in the hydraulic systems of various machines. The output force of a hydraulic cylinder is directly proportional to the effective area of ​​the piston and the pressure difference between its two sides. A hydraulic cylinder basically consists of a cylinder barrel and cylinder head, a piston and piston rod, a sealing device, a cushioning device, and a venting device.

[0003] Traditional hydraulic cylinders, due to hydraulic shock during operation, constantly and violently impact one end of the cylinder. This necessitates the manufacture of larger, more impact-resistant components at that end, which is costly. However, prolonged use can also cause significant vibrations to the hydraulic cylinder as a whole or its mounting base. In emergency rescue situations, these vibrations may affect the overall support structure, leading to potential safety hazards. Utility Model Content

[0004] The purpose of this invention is to provide a hydraulic cylinder head structure with a buffer device to solve the above-mentioned problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a hydraulic cylinder head structure with a buffer device, including a mounting plate, on which a hydraulic cylinder body and a control box are provided, a piston is movably arranged inside the hydraulic cylinder body, one end of the piston extends to the outside of the body, an impact-resistant cover plate is provided on one side of the hydraulic cylinder body, and one end of the push column extends through the impact-resistant cover plate to the outside of the impact-resistant cover plate.

[0006] The impact-resistant cover plate includes a base movably connected to a push column. A housing is fixedly connected to the outside of the base. At least one communicating hole is provided between the housing and the base. A movable body is also provided inside the housing. A spring is fixedly connected between the movable body and the housing. Liquid is provided on the side of the movable body near the hydraulic cylinder body, and the liquid is connected to the side of the piston near the impact-resistant cover plate through the communicating hole.

[0007] Preferably, when the volume of the liquid is concentrated on one side of the moving body, it will be squeezed by the piston on the base surface to form a liquid of a certain thickness. Only when the piston compresses the liquid, the moving body and the spring can the liquid come into contact with the base.

[0008] Preferably, an elastic membrane is provided between the movable body and the base, and the liquid is placed between the elastic membrane and the base without directly contacting the movable body. Both the elastic membrane and the movable body are sleeved on the outside of the push column.

[0009] Preferably, the base is provided on the side near the movable body, with the self-propelled column extending from high to low at the connecting hole.

[0010] Preferably, the control box is connected to the hydraulic cylinder body via a transmission connection, a sealing ring is provided between the side of the impact-resistant cover plate away from the hydraulic cylinder body and the push column, and mounting holes are provided on the mounting plate.

[0011] The technical effects and advantages of this utility model are as follows: When the piston is about to contact the base, the liquid is squeezed to fill the space between the elastic diaphragm and the piston. The continued movement of the piston will only push the liquid, the elastic diaphragm, and the moving body to compress the spring. The elasticity of the spring will offset the thrust of the hydraulic cylinder, thereby reducing the impact force on the base and even the entire impact-resistant cover plate. This reduces the impact on the entire device, avoids the generation of large-scale vibration, and uses liquid to measure distances. This method is the most accurate and will not produce errors over time. It has a long service life and high accuracy, and is easy to use. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a front view of the present invention;

[0014] Figure 3 For the present utility model Figure 2 Enlarged view of part A in the middle.

[0015] In the diagram: 1. Hydraulic cylinder body; 101. Piston; 102. Object; 2. Mounting plate; 3. Control box; 4. Mounting hole; 5. Impact-resistant cover plate; 501. Outer shell; 502. Spring; 503. Moving body; 504. Elastic membrane; 505. Base; 506. Connecting hole; 6. Sealing ring; 7. Push column. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] This utility model provides a hydraulic cylinder cover structure with a buffer device as shown in the figure, including a mounting plate 2, a hydraulic cylinder body 1 and a control box 3 on the mounting plate 2, a piston 101 is movably arranged inside the hydraulic cylinder body 1, one end of the piston 101 extends to the outside of the body 102, an impact-resistant cover plate 5 is provided on one side of the hydraulic cylinder body 1, and one end of the push column 7 extends through the impact-resistant cover plate 5 to the outside of the impact-resistant cover plate 5.

[0018] The impact-resistant cover plate 5 includes a base 505 movably connected to the push column 7. A housing 501 is fixedly connected to the outside of the base 505. At least one through hole 506 is provided between the housing 501 and the base 505. A movable body 503 is also provided inside the housing 501. A spring 502 is fixedly connected between the movable body 503 and the housing 501. Liquid is provided on the side of the movable body 503 near the hydraulic cylinder body 1, and the liquid is connected to the side of the piston 101 near the impact-resistant cover plate 5 through the through hole 506.

[0019] Specifically, when the volume of liquid is concentrated on one side of the moving body 503, it will be squeezed by the piston 101 on the surface of the base 505 to form a certain thickness of liquid. Only when the piston 101 compresses the liquid, the moving body 503 and the spring 502 can they come into contact with the base 505.

[0020] Specifically, an elastic membrane 504 is provided between the movable body 503 and the base 505. The liquid is placed between the elastic membrane 504 and the base 505 and does not directly contact the movable body 503. Both the elastic membrane 504 and the movable body 503 are sleeved on the outside of the push column 7.

[0021] Specifically, a 507 is provided on the side of the base 505 near the movable body 503, and the 507 extends from high to low from the push post 7 to the connecting hole 506.

[0022] Specifically, the control box 3 is connected to the hydraulic cylinder body 1 via a transmission connection, and a sealing ring 6 is provided between the side of the impact-resistant cover plate 5 away from the hydraulic cylinder body 1 and the push column 7. The mounting plate 2 is provided with mounting holes 4.

[0023] Working principle: The hydraulic cylinder body 1 is controlled by the control box 3 to push the piston 101, which in turn drives the push column 7 to move to one side. When it is about to reach the top, because there is liquid between the piston 101 and the base 505, the liquid is squeezed and fills the space between the elastic diaphragm 504 and the piston 101 when it is about to contact the base 505. The continued movement of the piston 101 will only push the liquid, the elastic diaphragm 504, and the moving body 503 to compress the spring 502. The elasticity of the spring 502 is used to offset the thrust of the hydraulic cylinder, thereby reducing the impact force on the base 505 and even the entire impact-resistant cover plate 5. This reduces the impact on the entire device, avoids the generation of large-scale vibration, and uses liquid to measure distance. This method is the most accurate and will not have errors over time. It has a long service life and high accuracy, and is easy to use.

[0024] The use of the elastic film 504 during this process effectively preserves the liquid, preventing leakage and further increasing accuracy.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hydraulic cylinder cover structure with a buffering device, comprising a mounting plate (2), a hydraulic cylinder main body (1) and a control box (3) are arranged on the mounting plate (2), characterized in that: A piston (101) is movably disposed inside the hydraulic cylinder body (1). One end of the piston (101) extends to the outside of the body (102). An impact-resistant cover plate (5) is disposed on one side of the hydraulic cylinder body (1). One end of the push column (7) extends through the impact-resistant cover plate (5) to the outside of the impact-resistant cover plate (5). The impact-resistant cover plate (5) includes a base (505) movably connected to the push column (7). A housing (501) is fixedly connected to the outside of the base (505). At least one connecting hole (506) is provided between the housing (501) and the base (505). A movable body (503) is also provided inside the housing (501). A spring (502) is fixedly connected between the movable body (503) and the housing (501). Liquid is provided on the side of the movable body (503) near the hydraulic cylinder body (1), and the liquid is connected to the side of the piston (101) near the impact-resistant cover plate (5) through the connecting hole (506).

2. The hydraulic cylinder head structure with a buffering device according to claim 1, characterized in that: When the volume of the liquid is concentrated on one side of the moving body (503), it will be squeezed by the piston (101) on the surface of the base (505) to form a certain thickness of liquid. Only when the piston (101) compresses the liquid, the moving body (503) and the spring (502) can it come into contact with the base (505).

3. The hydraulic cylinder head structure with a buffering device according to claim 2, characterized in that: An elastic membrane (504) is also provided between the moving body (503) and the base (505). The liquid is placed between the elastic membrane (504) and the base (505) and does not directly contact the moving body (503). The elastic membrane (504) and the moving body (503) are both sleeved on the outside of the push column (7).

4. The hydraulic cylinder head structure with a buffering device according to claim 3, characterized in that: The base (505) is provided with a (507) on the side near the moving body (503), and the (507) is from high to low from the push post (7) to the connecting hole (506).

5. The hydraulic cylinder head structure with a buffering device according to claim 1, characterized in that: The control box (3) is connected to the hydraulic cylinder body (1) for transmission. A sealing ring (6) is provided between the side of the impact-resistant cover plate (5) away from the hydraulic cylinder body (1) and the push column (7). A mounting hole (4) is provided on the mounting plate (2).

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