Oil cylinder bottom cover with high sealing performance

Abstract

The utility model relates to the technical field of oil cylinder parts, and discloses an oil cylinder bottom cover with strong sealing performance, which comprises an outer bottom cover assembly, and is characterized in that a convenient assembling assembly is arranged in the middle of the top of the outer bottom cover assembly, and an inner bottom cover assembly is limited and arranged in the outer bottom cover assembly by the convenient assembling assembly. According to the utility model, the device is changed into a combination mode of the outer bottom cover assembly and the inner bottom cover assembly, so that when the device is used and oil cylinder ports with different sizes need to be sealed and plugged through the arranged inner bottom cover assembly, the sealing effect can be better guaranteed, and the oil cylinder port sealing device is suitable for oil cylinder ports with different sizes. And adjustment can be carried out according to the diameters of different oil cylinders.

Description

Technical Field

[0001] This utility model relates to the technical field of hydraulic cylinder parts, specifically to a hydraulic cylinder bottom cover with strong sealing performance. Background Technology

[0002] The cylinder bottom cover is a key component in a hydraulic system, primarily used to seal the bottom of the cylinder, preventing hydraulic oil leakage and protecting it from external contaminants. With industrial development, the requirements for the sealing performance, durability, and reliability of cylinder bottom covers are increasingly stringent, especially in high-pressure, high-temperature, and harsh environments. Its applications are wide-ranging, including precision machining (such as CNC machine tools and laser processing to ensure high precision and consistency); 3D printing (for rapid prototyping and small-batch production of complex structures); and automated assembly (to improve production efficiency and consistency). With advancements in sealing technology, materials science, and manufacturing processes, modern cylinder bottom covers have significantly improved in sealing performance, durability, and reliability, better meeting the demands of high-pressure, high-temperature, and harsh environments.

[0003] Application number CN201220270123.3 discloses a bottom cover mechanism, particularly a bottom cover mechanism for a three-stage hydraulic cylinder. It includes a cover body, a retaining ring at the rear of the cover body with a sealing groove, a mating notch at the head of the cover body, and sealing grooves and fastening screw holes on the side walls of the cover body. The bottom cover mechanism for a three-stage hydraulic cylinder is simple in structure and easy to use; however, it has a drawback: when installing on a smaller cylinder opening, it cannot provide corresponding adjustments, thus lacking convenience and flexibility. Utility Model Content

[0004] The purpose of this invention is to provide a well-sealed cylinder bottom cover to solve the problem that when installing a small cylinder opening, the device cannot provide corresponding adjustments, thus making the device inconvenient and flexible.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a hydraulic cylinder bottom cover with strong sealing performance, including an outer bottom cover assembly. A convenient assembly component is installed in the middle of the top of the outer bottom cover assembly. The convenient assembly component limits the inner bottom cover assembly to be installed inside the outer bottom cover assembly.

[0007] The inner bottom cover assembly includes a rotating handle, the bottom of which is connected to a threaded rod. An alloy solid is mounted on the bottom of the threaded rod, and the threaded rod passes through the interior of the assembly opening.

[0008] Furthermore, the outer bottom cover assembly includes a cover body, the cover body having a combination opening in the middle, and a silicone plug installed at the bottom of the cover body.

[0009] Furthermore, the convenient assembly component includes a rotating hinge that limits the threaded half-rings on both sides to be installed on the top of the cover, and the two threaded half-rings are combined to form a ring, with a threaded rod installed in the middle of the ring, and a limit lock is installed on one side of the threaded half-ring.

[0010] Furthermore, a silicone plug is installed on the outer side of the alloy entity.

[0011] Furthermore, a limiting cavity is formed in the middle of the cover, and a reset spring is installed inside the limiting cavity, which is correspondingly formed in the inner wall of the assembly port.

[0012] Furthermore, the inner wall of the threaded semi-ring is fitted with a threaded inner wall, which is adapted to the threaded rod.

[0013] This utility model has the following beneficial effects:

[0014] (1) The present invention provides a cylinder bottom cover with strong sealing performance by replacing the device with a combination of an outer bottom cover assembly and an inner bottom cover assembly. This allows the inner bottom cover assembly to be used to seal the cylinder openings of different sizes when using the device. This not only ensures a better sealing effect, but also allows for adjustment for different cylinder diameters.

[0015] (2) The oil cylinder bottom cover with strong sealing performance of this utility model has a convenient assembly component installed in the device. When the device needs to be disassembled, the convenient assembly component can be unfolded and the inner bottom cover component can be pulled outward. Combined with the reset spring set inside the outer bottom cover component, it can provide a convenient disassembly and separation effect.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of a hydraulic cylinder bottom cover with strong sealing performance according to this utility model.

[0019] Figure 2 This is a schematic diagram of the disassembled structure of a hydraulic cylinder bottom cover with strong sealing performance according to this utility model;

[0020] Figure 3 This is a cross-sectional view of a hydraulic cylinder bottom cover with strong sealing performance according to the present invention.

[0021] Figure 4 This is a schematic diagram of the inner bottom cover assembly of a hydraulic cylinder bottom cover with strong sealing performance according to this utility model.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] In the diagram: 1. Outer bottom cover assembly; 2. Easy assembly assembly; 3. Inner bottom cover assembly; 101. Cover body; 102. Assembly port; 103. Silicone plug one; 201. Rotating hinge; 202. Threaded half ring; 203. Limiting lock; 301. Rotating handle; 302. Threaded rod; 303. Alloy solid; 304. Silicone plug two; 1011. Limiting cavity; 1012. Return spring; 2021. Threaded inner wall. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0025] Please see Figures 1-4 As shown, this utility model is a cylinder bottom cover with strong sealing performance, including an outer bottom cover assembly 1. A convenient assembly assembly 2 is installed in the middle of the top of the outer bottom cover assembly 1. The convenient assembly assembly 2 limits the inner bottom cover assembly 3 to be installed inside the outer bottom cover assembly 1.

[0026] The inner bottom cover assembly 3 includes a rotating handle 301, with a threaded rod 302 connected to the bottom of the rotating handle 301. An alloy solid 303 is mounted on the bottom of the threaded rod 302, and the threaded rod 302 is installed through the interior of the assembly port 102. The inner bottom cover assembly 3 can be raised or lowered by rotating the threaded rod 302. A limit lock 203 is used to fix the position of the threaded port semi-ring 202 to prevent it from loosening during operation. The rotating handle 301 is located on the top of the inner bottom cover assembly 3, and the user can control the threaded rod by rotating the handle. The threaded rod 302 moves up and down through the combined port 102 and engages with the threaded inner wall 2021 of the threaded half-ring 202, enabling the inner bottom cover assembly 3 to move up and down. The alloy solid 303 is installed at the bottom of the threaded rod 302 to enhance the strength and stability of the inner bottom cover. The silicone plug 304 is installed on the outside of the alloy solid 303. When the inner bottom cover assembly 3 descends to the appropriate position, the silicone plug 304 comes into close contact with the inner wall of the outer bottom cover assembly 1, forming a second sealing barrier to further enhance the sealing effect.

[0027] By replacing the device with a combination of outer bottom cover assembly 1 and inner bottom cover assembly 3, when using this device, the inner bottom cover assembly 3 can be used to seal the cylinder openings of different sizes. This not only ensures a better sealing effect, but also allows for adjustment based on different cylinder diameters.

[0028] The outer bottom cover assembly 1 includes a cover body 101, with a combination opening 102 in the middle of the cover body 101, and a silicone plug 103 installed at the bottom of the cover body 101. The cover body 101 serves as the main body of the outer bottom cover, with the combination opening 102 in the middle for installing the inner bottom cover assembly 3. The silicone plug 103 is installed at the bottom of the cover body 101 to enhance the sealing between the bottom cover and the oil cylinder.

[0029] The convenient assembly component 2 includes a rotating hinge 201, which limits the threaded half-rings 202 on both sides to be installed on the top of the cover 101. The two threaded half-rings 202 are combined to form a ring, and a threaded rod 302 is installed in the middle of the ring. At the same time, a limit lock 203 is installed on one side of the threaded half-ring 202. The rotating hinge 201 connects and limits the two threaded half-rings 202 to the top of the cover 101. The two threaded half-rings 202 are combined to form a complete ring. A threaded rod 302 is installed in the middle of the ring. The inner wall of the threaded half-ring 202 is provided with a threaded inner wall 2021, which is adapted to the thread of the threaded rod 302.

[0030] A silicone plug 304 is installed on the outside of the alloy solid 303.

[0031] A limiting cavity 1011 is provided in the middle of the cover 101. A reset spring 1012 is installed inside the limiting cavity 1011, and the limiting cavity 1011 is correspondingly provided in the inner wall of the assembly port 102.

[0032] The inner wall of the threaded semi-ring 202 is fitted with a threaded inner wall 2021, which is compatible with the threaded rod 302.

[0033] In use, the design of this cylinder bottom cover achieves strong sealing and convenient assembly through the coordinated work of multiple components. The cover body 101, as the main body of the outer bottom cover, has a central assembly port 102 for installing the inner bottom cover assembly 3. A silicone plug 103 is installed at the bottom of the cover body 101 to enhance the sealing between the bottom cover and the cylinder, preventing oil leakage. A return spring 1012 is installed in the limiting cavity 1011. When the inner bottom cover assembly 3 is installed in place, the return spring provides elastic support, ensuring a tight fit between the inner and outer bottom cover assemblies. The rotating hinge 201 connects and limits the two threaded semi-rings 202 to the top of the cover body 101. The threaded half-ring 202 is assembled to form a complete ring. A threaded rod 302 is installed in the center of the ring. The inner wall of the threaded half-ring 202 has a threaded inner wall 2021, which matches the thread of the threaded rod 302. Rotating the threaded rod 302 allows the inner bottom cover assembly 3 to be raised or lowered. A limit lock 203 is used to fix the position of the threaded half-ring 202 to prevent it from loosening during operation. A rotating handle 301 is located at the top of the inner bottom cover assembly 3. The user can control the raising and lowering of the threaded rod 302 by rotating the handle. The threaded rod 302 passes through the assembly opening 102 and engages with the threaded inner wall 2021 of the threaded half-ring 202, enabling the inner bottom cover assembly 3 to move up and down. The solid body 303 is installed at the bottom of the threaded rod 302 to enhance the strength and stability of the inner bottom cover. A second silicone plug 304 is installed on the outside of the alloy solid body 303. When the inner bottom cover assembly 3 descends to the appropriate position, the second silicone plug 304 makes tight contact with the inner wall of the outer bottom cover assembly 1, forming a second sealing barrier to further enhance the sealing effect. The inner bottom cover assembly 3 is inserted into the outer bottom cover assembly 1 through the combination port 102. Rotating the handle 301 drives the threaded rod 302 to rotate. The threaded rod 302 engages with the threaded inner wall 2021 of the threaded half-ring 202, causing the inner bottom cover assembly 3 to move downwards. When the inner bottom cover assembly 3 descends to the appropriate position, the second silicone plug 304 engages with the outer bottom cover assembly 1. The inner walls of the cylinder are in close contact to form a seal. The limiting lock 203 locks the threaded half-ring 202 to prevent the threaded rod 302 from loosening. Silicone plug one 103 and silicone plug two 304 form a double seal at the bottom and inner wall of the outer bottom cover assembly 1, respectively, effectively preventing oil leakage. The return spring 1012 provides elastic support to ensure a tight fit between the inner bottom cover assembly 3 and the outer bottom cover assembly 1. By releasing the limiting lock 203 and rotating the handle 301 in the opposite direction, the threaded rod 302 rises, causing the inner bottom cover assembly 3 to detach from the outer bottom cover assembly 1, achieving convenient disassembly. This cylinder bottom cover achieves convenient installation and disassembly of the inner bottom cover assembly through the cooperation of components such as the rotating handle, threaded rod, and threaded half-ring. At the same time, the double sealing design of silicone plug one and silicone plug two, as well as the elastic support of the return spring, ensures the high sealing performance and stability of the cylinder bottom cover.

[0034] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A strong sealing bottom cover of a cylinder, comprising an outer bottom cover assembly (1), characterized in that: The top of the outer bottom cover assembly (1) is provided with a convenient assembly assembly (2), which limits the installation of the inner bottom cover assembly (3) in the inner bottom cover assembly (1). The inner bottom cover assembly (3) comprises a rotating handle (301), the bottom of which is connected with a threaded rod (302), the bottom of which is provided with an alloy entity (303), and the threaded rod (302) penetrates and is installed in the inside of the combined port (102).

2. The strong sealing bottom cover of the oil cylinder according to claim 1, characterized in that: The outer bottom cover assembly (1) comprises a cover body (101), the middle of which is provided with a combined port (102), and the bottom of which is provided with a silica gel plug (103).

3. The strong sealing bottom cover of the oil cylinder according to claim 1, characterized in that: The convenient assembly assembly (2) comprises a rotating hinge (201), which limits the installation of the threaded port half ring (202) on both sides of the top of the cover body (101), and the two threaded port half rings (202) are combined to form a circular ring, and the threaded rod (302) is installed in the middle of the circular ring, and the threaded port half ring (202) is provided with a limiting lock (203) on one side.

4. The strong sealing bottom cover of the oil cylinder according to claim 1, characterized in that: The outer side of the alloy entity (303) is provided with a silica gel plug (304).

5. The strong sealing bottom cover of the oil cylinder according to claim 2, characterized in that: The middle of the cover body (101) is provided with a limiting cavity (1011), the inside of which is provided with a return spring (1012), and the limiting cavity (1011) is provided in the inner wall of the combined port (102).

6. The strong sealing bottom cover of the oil cylinder according to claim 3, characterized in that: The inner wall of the threaded port half ring (202) is provided with a threaded inner wall (2021), which is matched with the threaded rod (302).

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