Hydraulic oil cylinder with same pushing force and pulling force during working

Abstract

The utility model discloses a hydraulic oil cylinder with the same pushing force and pulling force during working, which comprises a cylinder cover and a cylinder barrel, the cylinder cover is arranged at the opening end of the cylinder barrel, a piston is connected in the cylinder barrel in a sliding mode, the piston is connected with a piston rod penetrating through the cylinder cover through a through hole in the cylinder cover, and the hydraulic oil cylinder further comprises a conservation structure. The conservation structure comprises a sealing structure used for connecting components and a balance structure used for keeping the same thrust and tension. By means of the mode, the hydraulic oil cylinder with the same thrust force and the same tensile force in the working process is of a conservation structure, the thrust force and the pressure in the working process of the hydraulic oil cylinder can be the same, the working efficiency is guaranteed, meanwhile, a sealing piece is protected, and the leakage risk is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of hydraulic oil cylinder, concretely relates to a hydraulic oil cylinder with same pushing force and pulling force during work. BACKGROUND

[0002] The hydraulic oil cylinder is a device that converts the pressure of liquid into mechanical energy by using hydraulic principle, and is widely used in various mechanical equipment, especially in heavy machinery and industrial automation equipment. Linear motion or pushing force is achieved through the pressure of hydraulic oil.

[0003] Although the same pressure is applied to both sides of the hydraulic oil cylinder, the entire surface area of the piston can be fully utilized for pushing on one side, while the space occupied by the piston rod needs to be considered on the other side, resulting in the pushing force being often greater than the pressure. The performance difference between the pulling force and the pushing force is too large, which may lead to a decrease in overall work efficiency, causing the sealing element to wear out too quickly under the pulling force, increasing the risk of leakage, and thus increasing the maintenance and maintenance costs. SUMMARY

[0004] The utility model mainly solves the technical problem of providing a hydraulic oil cylinder with the same pushing force and pulling force during work, which can make the pushing force and pressure of the hydraulic oil cylinder during work the same.

[0005] To solve the above technical problems, one technical scheme of the utility model is adopted: a hydraulic oil cylinder with the same pushing force and pulling force during work, comprising a cylinder cover and a cylinder barrel, the cylinder cover is installed at the opening end of the cylinder barrel, a piston is slidably connected in the cylinder barrel, the piston is connected with a piston rod that penetrates the cylinder cover through a through hole in the cylinder cover, and further comprising a conservation structure.

[0006] The conservation structure comprises a sealing structure for connecting between components and a balance structure for keeping the same pushing force and pulling force.

[0007] In a preferred embodiment of the utility model, the sealing structure comprises a first sealing ring and a second sealing ring, the first sealing ring is arranged in the through hole, the first sealing ring cooperates with the piston rod, and the second sealing ring is arranged at the opening end of the cylinder barrel and cooperates with the connecting part of the cylinder cover.

[0008] In a preferred embodiment of the utility model, the balance structure comprises a balance surface, the balance surface is arranged at the position of the piston where the piston rod is located, and the area of the balance surface is the same as the area of the side of the piston without the piston rod.

[0009] In a preferred embodiment of the utility model, the types of the balance surface include regular surface and irregular surface.

[0010] In a preferred embodiment of this utility model, a dust removal ring is installed inside the through hole, and the dust removal ring is located between the first sealing ring and the opening of the through hole.

[0011] In a preferred embodiment of the present invention, the dust removal ring is provided with scraping openings on both sides, and the scraping openings cooperate with the piston rod.

[0012] The beneficial effects of this utility model are: This utility model provides a hydraulic cylinder in which the thrust and pull are the same during operation. The hydraulic cylinder adopts a conservation structure, which enables the thrust and pressure of the hydraulic cylinder to be the same during operation. This not only ensures work efficiency, but also protects the seals and reduces the risk of leakage. Attached Figure Description

[0013] Fig. 1 This is a sectional view of the main view of Example 1.

[0014] Fig. 2 This is a front view of a dust removal ring inside a hydraulic cylinder where the thrust and pull forces are the same during operation.

[0015] Fig. 3 A sectional view of the front view of Embodiment 2

[0016] The components in the attached diagram are labeled as follows: 1. Cylinder head; 2. Cylinder barrel; 3. Piston rod; 4. Piston; 5. First sealing ring; 6. Second sealing ring; 7. Dust removal ring; 8. Scraper; 9. Balance surface. Detailed Implementation

[0017] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0018] Please see Figs. 1 to 3 The embodiments of this utility model include:

[0019] Example 1

[0020] A hydraulic cylinder with the same thrust and pull force during operation includes a cylinder head 1 and a cylinder barrel 2. The cylinder head 1 is installed at the open end of the cylinder barrel 2. A piston 4 is slidably connected inside the cylinder barrel 2. The piston 4 is connected to a piston rod 3 that passes through a through hole in the cylinder head 1. The cylinder cylinder also includes a conservation structure, which ensures that the thrust and pressure of the hydraulic cylinder are the same during operation, thus guaranteeing work efficiency, protecting the seals, and reducing the risk of leakage.

[0021] The conservation structure includes a sealing structure for connecting components and a balancing structure for maintaining the same thrust and pull.

[0022] The sealing structure comprises a first sealing ring 5 and a second sealing ring 6, the first sealing ring 5 is arranged in the through hole, the first sealing ring 5 is matched with the piston rod 3, the second sealing ring 6 is arranged at the opening end of the cylinder barrel 2, the second sealing ring 6 is matched with the connecting part of the cylinder cover 1, and the first sealing ring 5 and the second sealing ring 6 ensure the sealing of the whole hydraulic oil cylinder.

[0023] The balance structure comprises a balance surface 9, the balance surface 9 is arranged at the position where the piston 4 is located at the piston rod 3, the area of the balance surface 9 is the same as the area of the side of the piston 4 without the piston rod 3, so that the pulling force and the pushing force are the same under the same pressure, the overall working efficiency is ensured, the sealing element is protected, and the risk of leakage is reduced.

[0024] The balance surface 9 comprises a regular surface and an irregular surface, as long as the area of the balance surface 9 is the same as the area of the side of the piston 4 without the piston rod 3, it is within the protection scope of the application.

[0025] In the embodiment, the balance surface 9 adopts a regular surface, which is a chamfered surface.

[0026] The through hole is provided with a dust removal ring 7, the dust removal ring 7 is located between the first sealing ring 5 and the opening of the through hole, and the dust removal ring 7 is used for removing hydraulic oil and impurities on the piston rod 3.

[0027] The dust removal ring 7 is provided with a scraping opening 8 on both sides, the scraping opening 8 is matched with the piston rod 3, and the scraping opening 8 can better remove the hydraulic oil and impurities.

[0028] Embodiment 2

[0029] A hydraulic oil cylinder with the same pulling force and pushing force during work comprises a cylinder cover 1 and a cylinder barrel 2, the cylinder cover 1 is arranged at the opening end of the cylinder barrel 2, a piston 4 is slidably connected in the cylinder barrel 2, the piston 4 is connected with a piston rod 3 penetrating the cylinder cover 1 through a through hole in the cylinder cover 1, and the hydraulic oil cylinder further comprises a conservation structure, which can make the pushing force and the pressure the same during the work of the hydraulic oil cylinder, thereby ensuring the working efficiency, protecting the sealing element and reducing the risk of leakage.

[0030] The conservation structure comprises a sealing structure for connecting parts and a balance structure for keeping the same pushing force and pulling force.

[0031] The sealing structure comprises a first sealing ring 5 and a second sealing ring 6, the first sealing ring 5 is arranged in the through hole, the first sealing ring 5 is matched with the piston rod 3, the second sealing ring 6 is arranged at the opening end of the cylinder barrel 2, the second sealing ring 6 is matched with the connecting part of the cylinder cover 1, and the first sealing ring 5 and the second sealing ring 6 guarantee the sealing property of the whole hydraulic oil cylinder.

[0032] The balance structure comprises a balance surface 9, the balance surface 9 is arranged at the position where the piston 4 is located at the piston rod 3, the area of the balance surface 9 is same as the area of the side of the piston 4 without the piston rod 3, so that the pulling force and the pushing force are same under the same pressure, the overall working efficiency is guaranteed, the sealing part is protected, and the risk of leakage is reduced.

[0033] The balance surface 9 comprises a regular surface and an irregular surface, as long as the area of the balance surface 9 is same as the area of the side of the piston 4 without the piston rod 3, the balance surface 9 is within the protection scope of the application.

[0034] In the embodiment, the balance surface 9 adopts an irregular surface, which is a surface composed of a plurality of concave and convex pits.

[0035] A dust removal ring 7 is arranged in the through hole, the dust removal ring 7 is located between the first sealing ring 5 and the opening of the through hole, and the dust removal ring 7 is used for removing the hydraulic oil and impurities on the piston rod 3.

[0036] Scraper edges 8 are arranged on the two sides of the dust removal ring 7, the scraper edges 8 are matched with the piston rod 3, and the scraper edges 8 can better remove the hydraulic oil and impurities.

[0037] Different from the prior art, the utility model discloses a hydraulic oil cylinder with same pushing force and pulling force during working, the hydraulic oil cylinder adopts a conservation structure, can make the pushing force and the pressure of the hydraulic oil cylinder during working same, guarantees the working efficiency, protects the sealing part and reduces the risk of leakage.

[0038] In the description of the utility model, it needs to be explained that components are all general standard components or components known by the person skilled in the art, the structure and principle thereof are all known by the person skilled in the art through technical manual or through conventional test method, the orientation or position relation indicated by the terms "up", "down", "left", "right", "inner", "outer" is the orientation or position relation based on the shown in the drawing, or is the orientation or position relation when the utility model product is usually placed, is only for the convenience of describing the utility model and simplifying the description, and therefore can not be understood as the restriction on the utility model.

[0039] The above merely illustrates the embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, which are made according to the content of the present application specification and drawings, are also included in the patent protection scope of the present application.

Claims

1. A hydraulic cylinder with the same thrust and pull force in operation, comprising a cylinder cover and a cylinder barrel, the cylinder cover is installed at the open end of the cylinder barrel, a piston is slidably connected in the cylinder barrel, the piston is connected with a piston rod which penetrates the cylinder cover through a through hole on the cylinder cover, characterized in that: Also include conservation structure; The conservation structure includes a sealing structure for connecting between components and a balance structure for keeping the same thrust and tension.

2. The hydraulic cylinder with the same pushing and pulling force during operation according to claim 1, characterized in that: The sealing structure includes a first sealing ring and a second sealing ring, the first sealing ring is arranged in the through hole, the first sealing ring cooperates with the piston rod, the second sealing ring is arranged at the opening end of the cylinder, and the second sealing ring cooperates with the connecting part of the cylinder cover.

3. A hydraulic cylinder with equal pushing and pulling force during operation according to claim 2, characterized in that: The balance structure includes a balance surface, the balance surface is arranged at the piston rod of the piston, and the area of the balance surface is the same as the area of the side of the piston without the piston rod.

4. A hydraulic cylinder with equal push and pull forces during operation according to claim 3, characterized in that: The balance surface includes regular surface and irregular surface.

5. The hydraulic cylinder with the same pushing and pulling force during operation according to claim 2, characterized in that: A dust removal ring is installed in the through hole, and the dust removal ring is located between the first sealing ring and the opening of the through hole.

6. A hydraulic cylinder with equal push and pull forces during operation according to claim 5, characterized in that: The dust removal ring is provided with a scraping opening on both sides, and the scraping opening cooperates with the piston rod.

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