Cylinder with improved knuckle lubrication

Abstract

The utility model belongs to the technical field of oil cylinder, concretely relates to the oil cylinder of joint node lubrication effect can promote, including cylinder barrel and the tail end of installing tail cover ring of cylinder barrel, the inside connection of cylinder barrel's opening has piston rod, one end of piston rod is connected with end head cover ring, the other end of piston rod is connected with piston, one end opening of cylinder barrel is connected with cylinder cover, the utility model discloses the pre -addition lubricating oil is carried out to the lubricating oil groove place inside cylinder cover, when piston rod drives piston to carry out reciprocating movement in cylinder barrel at this time, at the same time, the inside pre -charge air pressure of lubricating oil groove at this time, when piston reciprocating moves, the lubricating oil in cylinder barrel reduces at this time, and make pressure drop, the lubricating oil in lubricating oil groove is under pressure and enters between cylinder and piston rod at this time, realize one and add the effect of lubricating oil, realize the effect of automatic addition, and then promote the lubrication effect of joint node between cylinder and piston rod, and then promote the service life.

Description

Technical Field

[0001] This utility model belongs to the field of cable technology, specifically relating to a hydraulic cylinder that can improve the lubrication effect of joints. Background Technology

[0002] A hydraulic cylinder, also known as a hydraulic cylinder, is a hydraulic actuator that converts hydraulic energy into linear reciprocating motion (or oscillating motion) mechanical energy. It features simple structure, large output force, smooth operation, and fast response speed, and is widely used in engineering machinery, metallurgy, machine tools, shipbuilding, aerospace and other fields.

[0003] The high-pressure hydraulic oil supplied by the hydraulic pump enters the rodless chamber of the cylinder through the inlet. The pressure of the hydraulic oil acts on the effective area of ​​the piston, generating thrust. The hydraulic oil in the other chamber is discharged through the return port, completing one reciprocating cycle.

[0004] Specifically, during the use of hydraulic cylinders, the high-frequency reciprocating motion of the piston will intensify the friction between the inner wall of the cylinder and between the piston and the piston rod, causing the internal lubricating oil to be consumed rapidly due to compression and high temperature. Currently, most hydraulic cylinders rely on manual periodic lubrication, but manual operation has significant drawbacks: the lubrication cycle is easily overlooked, resulting in short-term oil shortage at the joints. This not only increases the operating resistance of the hydraulic cylinder and causes the action to stall, but also accelerates the aging of the seals, ultimately affecting the output accuracy and overall service life of the hydraulic cylinder. Utility Model Content

[0005] The purpose of this invention is to provide a hydraulic cylinder that can improve the lubrication effect of joints. It aims to solve the problem that during the use of hydraulic cylinders, the high-frequency reciprocating motion of the piston will aggravate the friction between the inner wall of the cylinder and between the piston and the piston rod, causing the internal lubricating oil to be consumed rapidly due to compression and high temperature. At present, most hydraulic cylinders rely on manual periodic lubrication, but manual operation has significant drawbacks: the lubrication cycle is easily overlooked, resulting in short-term oil shortage at joints. This not only leads to increased cylinder running resistance and jamming, but also accelerates the aging of seals, ultimately affecting the output accuracy and overall service life of the hydraulic cylinder.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a hydraulic cylinder that can improve the lubrication effect of joint points, including a cylinder barrel and a tail collar installed at the tail end of the cylinder barrel, a piston rod connected inside the opening of the cylinder barrel, an end collar connected to one end of the piston rod, a piston connected to the other end of the piston rod, and a cylinder cover connected to the opening at one end of the cylinder barrel.

[0007] The cylinder head has a lubricating oil groove on its inner wall, a filter screen is installed at the opening of the cylinder head's inner wall, a stud is connected to the surface of the cylinder head near the lubricating oil groove, a valve is connected to the surface of the stud, and a sealing ring is connected to the inner wall of the valve.

[0008] To facilitate improved lubrication at joint points, the lubricating oil groove of this invention, which improves lubrication at joint points, is preferably annular in structure and has a rectangular cross-section.

[0009] To facilitate the automatic addition of lubricating oil, and as an oil cylinder that can improve the lubrication effect of joints in this utility model, preferably, the inner wall of the lubricating oil tank is provided with an oil filling groove, which has a structure that is wider at the top and narrower at the bottom.

[0010] To facilitate the addition of lubricating oil, and as an oil cylinder of this utility model that can improve the lubrication effect of joint points, preferably, the filter screen is made of stainless steel, and the air valve is threadedly connected to the stud.

[0011] To improve the buffering effect, as a hydraulic cylinder that can improve the lubrication effect of joints in this utility model, preferably, the piston rod is connected to a docking post at one end near the piston, and a buffer pad is connected to one end of the docking post. The buffer pad is made of silicone.

[0012] To facilitate quick assembly of the buffer pad, and as an oil cylinder that can improve the lubrication effect of joint points according to this utility model, preferably, one side of the buffer pad is connected to an installation strip, and the surface of the docking post near the installation strip is provided with an installation groove, and the installation strip and the installation groove on the surface of the docking post form an interference fit structure.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention pre-fills the lubricating oil groove inside the cylinder head with lubricating oil. When the piston rod drives the piston to reciprocate inside the cylinder, the lubricating oil groove is simultaneously pre-pressurized. As the piston reciprocates, the amount of lubricating oil inside the cylinder decreases, causing the pressure to drop. At this point, the lubricating oil in the lubricating oil groove is pressurized and enters the space between the cylinder and the piston rod, achieving the effect of adding lubricating oil with each movement, thus achieving automatic addition. This improves the lubrication effect at the joint between the cylinder and the piston rod, thereby extending the service life. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the overall assembly structure of the hydraulic cylinder provided in an embodiment of this application.

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the hydraulic cylinder provided in an embodiment of this application.

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the cylinder head provided in an embodiment of this application.

[0019] Figure 4 This is an exploded view of the installation structure of the buffer pad provided in an embodiment of this application.

[0020] In the diagram: 1. Cylinder; 2. Tail collar; 3. Piston rod; 4. End collar; 5. Piston; 6. Cylinder head; 7. Lubricating oil groove; 8. Filter screen; 9. Stud; 10. Valve; 11. Sealing ring; 12. Connecting post; 13. Buffer pad; 14. Mounting strip; 15. Mounting groove. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-4 The present invention provides the following technical solution: a hydraulic cylinder that can improve the lubrication effect of joint points, including a cylinder barrel 1 and a tail collar 2 installed at the tail end of the cylinder barrel 1. A piston rod 3 is connected inside the opening of the cylinder barrel 1. One end of the piston rod 3 is connected to an end collar 4. The other end of the piston rod 3 is connected to a piston 5. A cylinder cover 6 is connected to the opening at one end of the cylinder barrel 1.

[0023] The inner wall of the cylinder head 6 is provided with a lubricating oil groove 7, a filter screen 8 is installed at the opening of the inner wall of the cylinder head 6, a stud 9 is connected to the surface of the cylinder head 6 near the lubricating oil groove 7, a valve 10 is connected to the surface of the stud 9, and a sealing ring 11 is connected to the inner wall of the valve 10.

[0024] Preferably, the lubricating oil groove 7 has a ring structure and a rectangular cross-section.

[0025] Preferably, the inner wall of the lubricating oil tank 7 is provided with an oil filling groove, which has a structure that is wider at the top and narrower at the bottom. In actual use, the use of an oil filling groove with a structure that is wider at the top and narrower at the bottom facilitates the oil filling effect.

[0026] Preferably, the filter screen 8 is made of stainless steel, and the air valve 10 is threadedly connected to the stud 9. In actual use, by threading the air valve 10 to the stud 9, it is convenient to fill the lubricating oil, and the filter screen 8 can filter the added lubricating oil, improving the performance.

[0027] Preferably, the piston rod 3 is connected to a mating post 12 at one end near the piston 5, and a buffer pad 13, made of silicone, is connected to one end of the mating post 12. In practical use, the buffer pad 13 prevents impact when the piston rod 3 moves to the end, thus extending its service life.

[0028] Preferably, a mounting strip 14 is connected to one side of the buffer pad 13, and a mounting groove 15 is formed on the surface of the mating post 12 near the mounting strip 14. The mounting strip 14 and the mounting groove 15 on the surface of the mating post 12 form an interference fit structure. In actual use, the buffer pad 13 can be easily and stably installed by using the mounting strip 14 and the mounting groove 15 on the surface of the mating post 12.

[0029] The working principle of this utility model is as follows: First, lubricating oil is pre-added to the lubricating oil groove 7 inside the cylinder head 6. When the piston rod 3 drives the piston 5 to reciprocate inside the cylinder 1, the lubricating oil groove 7 is pre-pressurized. When the piston 5 reciprocates, the lubricating oil inside the cylinder 1 decreases, causing the pressure to drop. At this time, the lubricating oil inside the lubricating oil groove 7 is pressurized and enters between the cylinder 1 and the piston rod 3, achieving the effect of adding lubricating oil with each movement, thus achieving automatic addition and improving the lubrication effect of the joint between the cylinder 1 and the piston rod 3, thereby increasing the service life. In addition, by connecting the buffer pad 13 to the docking post 12, the mounting strip 14 on one side of the buffer pad 13 is connected to the mounting groove 15 on the surface of the docking post 12. This facilitates the stable installation of the buffer pad 13 and prevents violent impact when the piston rod 3 moves to the end, improving the movement effect of the piston rod 3.

[0030] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A hydraulic cylinder that can improve the lubrication effect of joint points, comprising a cylinder barrel (1) and a tail collar (2) installed at the tail end of the cylinder barrel (1), characterized in that: A piston rod (3) is connected inside the opening of the cylinder (1). One end of the piston rod (3) is connected to an end collar (4), and the other end of the piston rod (3) is connected to a piston (5). A cylinder head (6) is connected to the opening at one end of the cylinder (1). The cylinder head (6) has a lubricating oil groove (7) on its inner wall. A filter screen (8) is installed at the opening of the inner wall of the cylinder head (6). A stud (9) is connected to the surface of the cylinder head (6) near the lubricating oil groove (7). A valve (10) is connected to the surface of the stud (9). A sealing ring (11) is connected to the inner wall of the valve (10).

2. The hydraulic cylinder for improving joint lubrication as described in claim 1, characterized in that: The lubricating oil groove (7) has an annular structure and a rectangular cross-section.

3. The hydraulic cylinder for improving joint lubrication as described in claim 1, characterized in that: The inner wall of the lubricating oil tank (7) is provided with an oil filling groove, which has a structure that is wider at the top and narrower at the bottom.

4. The hydraulic cylinder for improving joint lubrication as described in claim 1, characterized in that: The filter screen (8) is made of stainless steel, and the air valve (10) is threadedly connected to the stud (9).

5. The hydraulic cylinder for improving joint lubrication as described in claim 1, characterized in that: The piston rod (3) is connected to a docking post (12) at one end near the piston (5), and a buffer pad (13) is connected to one end of the docking post (12). The buffer pad (13) is made of silicone.

6. The hydraulic cylinder for improving joint lubrication as described in claim 5, characterized in that: The buffer pad (13) is connected to a mounting strip (14) on one side. The mating post (12) has a mounting groove (15) on its surface near the mounting strip (14). The mounting strip (14) and the mounting groove (15) on the surface of the mating post (12) form an interference fit structure.

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