Columnar oil cylinder with supporting ring with multiple functions

Abstract

The cylindrical oil cylinder comprises a front cover, a rear cover, a piston rod, a piston, a fixing column, a cylinder pipe and a CB seat, the right side of the front cover is fixedly connected with the left side of the cylinder pipe, the right side of the cylinder pipe is fixedly connected with the left side of the rear cover, and the four corners of the right side of the front cover are fixedly connected with the left side of the fixing column. The right side of the fixing column is fixedly connected with four corners of the rear cover. By arranging the first anti-pollution ring and the second anti-pollution ring and utilizing the advantages of high hardness and good wear resistance of the first anti-pollution ring and the second anti-pollution ring, the piston rod can be better supported, and the problems that when a CB installation mode is adopted, the piston rod droops due to the weight of the piston rod, the larger the shaft diameter is, the longer the stroke is, and the service life of the piston rod is influenced are solved. In the prior art, the more obvious the sagging phenomenon is, the wear-resistant ring is generally added for supporting and guiding in the industry, but the oil cylinder does not have enough space for adding the wear-resistant ring in some occasions with limited installation size and high requirements on the cleanliness of hydraulic oil.

Description

Technical Field

[0001] The utility model relates to the technical field of oil cylinders, in particular to a cylindrical oil cylinder with a supporting ring having multiple functions. Background Art

[0002] A cylindrical oil cylinder, also known as a hydraulic cylinder, is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion. It has a simple structure and reliable operation. When it is used to achieve reciprocating motion, the reduction device can be eliminated, and there is no transmission gap, and the movement is smooth. Therefore, it is widely used in the hydraulic systems of various machines. The output force of the hydraulic cylinder is proportional to the effective area of ​​the piston and the pressure difference on both sides. The hydraulic cylinder is basically composed of a cylinder barrel and a cylinder head, a piston and a piston rod, a sealing device, a buffer device and an exhaust device. The buffer device and the exhaust device depend on the specific application occasions. However, during the use of the cylindrical oil cylinder, when the CB installation method is adopted, the piston rod will cause the piston rod to sag due to its own weight. The larger the shaft diameter and the longer the stroke, the more obvious the sagging phenomenon. The industry generally installs wear-resistant rings for support and guidance, but in some occasions where the installation size is limited and there are high requirements for the cleanliness of the hydraulic oil, there is not enough space to install wear-resistant rings in the oil cylinder. Utility Model Content

[0003] In order to solve the problems raised in the above-mentioned background technology, the purpose of the utility model is to provide a cylindrical oil cylinder with a support ring having multiple functions, which has the advantages of anti-pollution, improved support strength and self-repair, and solves the problem that when the CB installation method is adopted, the piston rod will cause the piston rod to sag due to its own weight. The larger the shaft diameter and the longer the stroke, the more obvious the sagging phenomenon. The industry generally installs wear-resistant rings for support and guidance, but in some occasions where the installation size is limited and there are high requirements for the cleanliness of the hydraulic oil, there is not enough space to install wear-resistant rings in the oil cylinder.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cylindrical oil cylinder with a supporting ring having multiple functions, comprising a front cover and a rear cover, wherein the front cover and the rear cover are fixedly connected on all sides by fixing columns, one end of the fixing column is embedded in the rear cover, and the other end of the fixing column passes through the front cover and is fixed by a fixing bolt threaded connection, a cylinder tube is also provided in the middle of the front cover and the rear cover, a piston rod is provided inside the cylinder tube, a piston, a first anti-fouling ring and a second anti-fouling ring are sleeved on the piston rod built into the cylinder tube part, a CB seat is fixedly connected to one side of the rear cover by bolts, a circular ring groove is opened in the middle of the CB seat, the end of the piston rod close to the front cover is a threaded structure, and the front end of the piston rod is threadedly connected to a limiting nut.

[0005] As a preferred embodiment of the present invention, the piston is arranged between the first anti-pollution ring and the second anti-pollution ring, and the first anti-pollution ring and the second anti-pollution ring are both made of polyethylene glycol.

[0006] As a preferred embodiment of the present invention, the diameter of the cylinder tube is smaller than the side lengths of the front cover and the rear cover.

[0007] As a preferred embodiment of the present invention, the left side of the piston rod surface is inclined with an inclination of 25°.

[0008] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0009] 1. The utility model provides a first anti-contamination ring and a second anti-contamination ring, and utilizes the advantages of high hardness and good wear resistance of the first anti-contamination ring and the second anti-contamination ring, so as to better support the piston rod, solve the problem of using wear-resistant rings for support and guidance in some occasions with limited installation dimensions and high requirements for the cleanliness of hydraulic oil, and can be adapted to piston rod support in all situations, playing a revolutionary role in the development of the hydraulic cylinder industry.

[0010] 2. The utility model adopts the first anti-fouling ring and the second anti-fouling ring of polyethylene glycol, which makes use of the chemical properties of polyethylene glycol, a widely used biocompatible polymer, so that the anti-fouling ring built into the oil cylinder has excellent anti-fouling and lubricating properties, effectively reducing the friction between the piston rod and the cylinder tube, thereby supporting the piston rod without affecting the friction between the two, effectively increasing the service life of the oil cylinder without affecting its working efficiency.

[0011] 3. The utility model can conveniently and quickly disassemble and replace the mechanism in the form of bolt fixing through the CB seat, and the limiting nut at the front end of the piston rod plays a good role in limiting the piston rod of the oil cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the partial cross-sectional structure of the utility model;

[0014] Figure 3 It is a three-dimensional structural schematic diagram of the piston rod of the utility model;

[0015] Figure 4 It is a schematic diagram of the explosion of the parts of the piston rod of the utility model.

[0016] In the figure: 1. front cover; 2. rear cover; 3. piston rod; 4. piston; 5. fixing column; 6. cylinder tube; 7. CB seat; 8. first anti-pollution ring; 9. second anti-pollution ring; 10. limit nut; 11. fixing bolt. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] like Figures 1 to 4 As shown, the support ring provided by the utility model has multiple functions of the cylindrical oil cylinder, including a front cover 1 and a rear cover 2, and is characterized in that: the front cover 1 and the rear cover 2 are fixedly connected by a fixing column 5 on all sides, one end of the fixing column 5 is embedded in the rear cover 2, and the other end of the fixing column 5 passes through the front cover 1 and is threadedly fixed by a fixing bolt 11. A cylinder tube 6 is also provided in the middle of the front cover 1 and the rear cover 2, and a piston rod 3 is provided inside the cylinder tube 6. The piston rod 3 is embedded in the cylinder tube 6 and is sleeved with a piston 4, a first anti-fouling ring 8 and a second anti-fouling ring 9. One side of the rear cover 2 is fixedly connected with a CB seat 7 by bolts, and a circular ring groove is opened in the middle of the CB seat 7. The end of the piston rod 3 close to the front cover 1 is a threaded structure, and the front end of the piston rod 3 is threadedly connected to a limiting nut 10.

[0019] refer to Figure 4 The material of the first anti-contamination ring 8 and the second anti-contamination ring 9 is polyethylene glycol.

[0020] As a technical optimization scheme of the utility model, it is convenient to utilize the chemical properties of polyethylene glycol, which is a widely used biocompatible polymer, so that the anti-fouling ring built into the oil cylinder has excellent anti-fouling and lubrication properties, effectively reducing the friction between the piston rod 3 and the cylinder tube 6, so that the piston rod 3 can be supported without affecting the friction between the two, thereby improving the smoothness of use and avoiding the piston rod 3 from getting stuck during the activity.

[0021] refer to Figure 1 One side of the rear cover 2 is fixedly connected with a CB seat 7 by bolts.

[0022] As a technical optimization solution of the utility model, the right side of the rear cover 2 is fixedly connected to the CB seat 7 by bolts, so that when the user needs to replace the CB seat 7 after long-term use, the user can directly loosen the bolts with a wrench and then remove the CB seat 7 for replacement.

[0023] refer to Figure 3 The left side of the surface of the piston rod 3 is inclined with an inclination of 25°.

[0024] As a technical optimization solution of the present invention, by setting the left side of the surface of the piston rod 3 to be inclined with an inclination of 25°, scratches caused by contact can be prevented.

[0025] The working principle and use process of the utility model are as follows: in the process of using the piston rod 3 and the piston 4, the advantages of the first anti-fouling ring 8 and the second anti-fouling ring 9 having high hardness and good wear resistance are utilized, so that the piston rod 3 can be better supported to prevent the piston rod 3 from sagging, and the cylinder tube 6 can prevent foreign matter from entering the cylinder tube 6 under the action of the first anti-fouling ring 8 and the second anti-fouling ring 9. Even if the first anti-fouling ring 8 and the second anti-fouling ring 9 are damaged in harsh environments such as high / low pH values ​​or ultraviolet rays, they can quickly restore the anti-fouling performance under certain conditions such as heat treatment at 120°C for 2 hours. Polyethylene glycol is a widely used biocompatible polymer with excellent anti-fouling and lubricating properties. It can reduce the friction between the piston rod 3 and the cylinder tube 6, improve the fluency of use, and avoid the piston rod 3 from getting stuck during the activity. The CB seat 7 can be easily and quickly disassembled and replaced in the form of bolt fixing, and the limit nut 10 at the front end of the piston rod 3 plays a good role in limiting the piston rod 3 of the oil cylinder.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cylindrical oil cylinder with a support ring having multiple functions, comprising a front cover (1) and a rear cover (2), characterized in that: The front cover (1) and the rear cover (2) are fixedly connected by fixing columns (5) on all sides, one end of the fixing column (5) is embedded in the rear cover (2), the other end of the fixing column (5) passes through the front cover (1) and is threadedly fixed by fixing bolts (11), a cylinder tube (6) is also provided in the middle of the front cover (1) and the rear cover (2), a piston rod (3) is provided in the cylinder tube (6), a piston (4), a first anti-fouling ring (8) and a second anti-fouling ring (9) are sleeved on the piston rod (3) built into the cylinder tube (6), one side of the rear cover (2) is fixedly connected to a CB seat (7) by bolts, a circular ring groove is provided in the middle of the CB seat (7), one end of the piston rod (3) close to the front cover (1) is a threaded structure, and the front end of the piston rod (3) is threadedly connected to a limiting nut (10).

2. The cylindrical oil cylinder with a support ring having multiple functions according to claim 1, characterized in that: The piston (4) is arranged between the first anti-pollution ring (8) and the second anti-pollution ring (9), and both the first anti-pollution ring (8) and the second anti-pollution ring (9) are made of polyethylene glycol.

3. The cylindrical oil cylinder with a support ring having multiple functions according to claim 1, characterized in that: The diameter of the cylinder tube (6) is smaller than the side lengths of the front cover (1) and the rear cover (2).

4. The cylindrical oil cylinder with a support ring having multiple functions according to claim 1, characterized in that: The left side of the surface of the piston rod (3) is inclined at an angle of 25°.

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