Hydraulic oil cylinder lubricating device

Abstract

The utility model discloses a hydraulic oil cylinder lubricating device, and relates to the technical field of hydraulic oil cylinders. The hydraulic oil cylinder lubricating device comprises a hydraulic oil cylinder body, the hydraulic oil cylinder body comprises a cylinder body and an output rod, an air sealing assembly used for preventing dust from entering is arranged at one end of the hydraulic oil cylinder body, and an oil return lubricating assembly used for automatically lubricating the hydraulic oil cylinder body is arranged in the middle of the air sealing assembly. The hydraulic oil cylinder body comprises a cylinder body and an output rod, the air sealing assembly is additionally arranged at the joint of the oil cylinder and the output rod, then the joint of the oil cylinder and the output rod is sealed through a sealing shell and a sealing outer plate in the air sealing assembly, and dust can be effectively prevented from entering the oil cylinder; and by arranging the sealing outer plate and the lubricating middle plate, the surface of the output rod can be cleaned in advance, dust is isolated from the outside, and the dust can be prevented from entering the oil cylinder.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic oil cylinders, in particular to a hydraulic oil cylinder lubrication device. Background Art

[0002] The existing hydraulic cylinder is an energy conversion device that converts hydraulic energy into mechanical energy of reciprocating linear motion. It converts hydraulic energy into mechanical energy. When it is used to realize reciprocating motion, the deceleration device can be eliminated, and there is no transmission gap, and the movement is smooth, so it is widely used in the hydraulic systems of various machines. The traditional shock-absorbing hydraulic cylinder can basically meet people's use needs;

[0003] A shock-absorbing hydraulic cylinder disclosed in the patent number CN217539168U is retrieved, comprising a hydraulic cylinder body and a mounting cover, the inner side of the hydraulic cylinder body is provided with a sealing arc groove, one side of the hydraulic cylinder body is provided with a mounting cover, and one side of the mounting cover is provided with a first sealing block matching the inner wall of the hydraulic cylinder body, the top and bottom ends of the hydraulic cylinder body are provided with movable grooves, and the inner wall of the hydraulic cylinder body on the side of the movable groove is provided with a fixed groove, the inner side of the mounting cover is provided with a limiting groove, and the top and bottom ends of the mounting cover are provided with movable grooves. The shock-absorbing hydraulic cylinder squeezes the movable plug through hydraulic oil so that the movable plug is squeezed toward the third spring, and the movable rod squeezes the arc elastic plate in the sleeve, so that the arc elastic plate is tightened, and then the arc elastic plate and the third spring drive the movable plug to reset under the elastic force of the elastic plate and the third spring, which has a good shock-absorbing and buffering effect;

[0004] According to the above patent, when the hydraulic cylinder is in use, when the output rod is extended, the output end of the cylinder surface will inevitably come into direct contact with the outside air, which will cause a certain amount of dust to adhere to the surface of the output rod. When the output rod is retracted, the dust attached to the outer surface will inevitably enter the interior of the cylinder, causing damage to the internal precision parts. When the output rod is retracted, the surface of the output rod can only be lubricated when the output rod is retracted, and the lubrication effect is not ideal. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a hydraulic cylinder lubrication device, which solves the problem that the output of the hydraulic cylinder cannot be well isolated from dust in the air when in use and the lubrication effect of the output rod is poor.

[0006] To achieve the above purpose, the utility model is implemented through the following technical solutions: a hydraulic cylinder lubrication device, including a hydraulic cylinder body, the hydraulic cylinder body including a cylinder body and an output rod, one end of the hydraulic cylinder body is provided with an air sealing component for blocking dust from entering, and the middle of the air sealing component is provided with an oil return lubrication component for automatically lubricating the hydraulic cylinder body;

[0007] The air sealing assembly includes a sealing shell fixedly arranged at one end of the hydraulic cylinder body, a sealing outer plate fixedly arranged on the inner surface of the sealing shell, a lubricating middle plate fixedly arranged on the inner surface of the sealing shell, and a plurality of oil cleaning rings fixedly arranged on the outer surface of the lubricating middle plate.

[0008] Preferably, the oil return lubrication assembly comprises an outer fixing ring fixedly arranged on the inner surface of the sealing shell, and an inner pressure ring is slidably arranged on the outer surface of the output rod of the oil cylinder body.

[0009] Preferably, a pressure plate is fixedly provided between the inner pressure ring and the outer fixing ring, and the pressure plate is made of chloroprene rubber.

[0010] Preferably, an oil return hole is provided on the inner surface of the sealing shell, an oil guide groove is provided on the inner surface of the sealing shell, and the oil guide groove and the oil return hole are communicated with each other.

[0011] Preferably, an oil dispersion groove is provided on the inner surface of the sealing shell, the oil guide groove and the oil dispersion groove are interconnected, and an oil through groove is provided on the inner surface of the lubricating middle plate, the oil through groove and the oil dispersion groove are interconnected.

[0012] Preferably, rubber gaskets are fixedly provided on the inner pressure ring and the inner surface of the sealing outer plate, and the cross section of the oil dispersion groove is arranged in a ring shape.

[0013] Beneficial Effects

[0014] The utility model provides a hydraulic cylinder lubrication device. Compared with the prior art, it has the following beneficial effects:

[0015] (1) By adding an air sealing assembly at the connection between the oil cylinder and the output rod, and then sealing the connection between the oil cylinder and the output rod through the sealing shell and the sealing outer plate in the air sealing assembly, dust can be effectively prevented from entering the interior of the oil cylinder. By providing the sealing outer plate and the lubricating middle plate, the surface of the output rod can be cleaned in advance, and dust can be isolated from the outside, thereby preventing dust from entering the interior of the oil cylinder.

[0016] (2) When the output rod is extended, the inner fixed ring in the oil return lubrication assembly moves with it, so that the pressure plate expands accordingly, and the air inside the sealed housing is compressed, so that the lubricating middle plate lubricates the output rod with the compressed lubricating oil. The output rod itself is lubricated through the working power of the output rod, so that the outer side of the output rod can be fully lubricated every time the oil cylinder works. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the interior of the sealed housing of the utility model;

[0019] Figure 3 It is a schematic diagram of the oil guide groove connection of the utility model;

[0020] Figure 4 It is a schematic diagram of the oil dispersion tank of the utility model;

[0021] Figure 5 It is a schematic diagram of the perspective view of the lubricating middle plate of the utility model.

[0022] In the figure: 1. Hydraulic cylinder body; 2. Air sealing assembly; 201. Sealing shell; 202. Sealing outer plate; 203. Lubricating middle plate; 204. Oil cleaning ring; 3. Oil return lubrication assembly; 301. Inner pressure ring; 302. Outer retaining ring; 303. Pressure plate; 304. Oil return hole; 305. Oil guide groove; 306. Oil dispersion groove; 307. Oil through groove. DETAILED DESCRIPTION

[0023] 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.

[0024] The utility model provides two technical solutions:

[0025] Figure 1-5 The first embodiment is shown: a hydraulic cylinder lubrication device, comprising a hydraulic cylinder body 1, the hydraulic cylinder body 1 comprising a cylinder body and an output rod, an air sealing component 2 for blocking dust from entering is provided at one end of the hydraulic cylinder body 1, and an oil return lubrication component 3 for automatically lubricating the hydraulic cylinder body 1 is provided in the middle of the air sealing component 2;

[0026] The air sealing assembly 2 includes a sealing shell 201 fixedly arranged at one end of the cylinder body of the hydraulic cylinder body 1, a sealing outer plate 202 is fixedly arranged on the inner surface of the sealing shell 201, a lubricating middle plate 203 is fixedly arranged on the inner surface of the sealing shell 201, and a plurality of oil cleaning rings 204 are fixedly arranged on the outer surface of the lubricating middle plate 203. The sealing outer plate 202, the lubricating middle plate 203 and the inner pressure ring 301 are used to isolate the sealing shell 201 into a plurality of separate sealing cavities, so that when the output rod is retracted, dust and other impurities in the air can be effectively isolated.

[0027] In the embodiment of the utility model, the oil return lubrication assembly 3 includes an outer fixed ring 302 fixedly arranged on the inner surface of the sealing shell 201, and an inner pressure ring 301 is slidably provided on the outer surface of the output rod of the cylinder body 1, wherein the inner side of the inner pressure ring 301 and the outer side of the output rod are in an interference fit, so that when compressed air is carried out, the outer side of the output rod can also be cleaned.

[0028] Figure 2-5 A second embodiment is shown, which mainly differs from the first embodiment in that a pressure plate 303 is fixed between the inner pressure ring 301 and the outer fixing ring 302, and the pressure plate 303 is made of chloroprene rubber. The high resilience and elongation of chloroprene rubber can prevent the pressure plate 303 from being broken.

[0029] In the embodiment of the utility model, an oil return hole 304 is opened on the inner surface of the sealed shell 201, and an oil guide groove 305 is opened on the inner surface of the sealed shell 201. The oil guide groove 305 and the oil return hole 304 are interconnected, and the pressure applied by the pressure plate 303 causes the lubricating oil to enter the oil guide groove 305 through the oil return hole 304.

[0030] In the embodiment of the utility model, an oil dispersion groove 306 is provided on the inner surface of the sealing shell 201, and the oil guide groove 305 and the oil dispersion groove 306 are connected to each other. An oil through groove 307 is provided on the inner surface of the lubricating middle plate 203, and the oil through groove 307 and the oil dispersion groove 306 are connected to each other. The oil dispersion groove 306 can soak the outer side of the output rod with lubricating oil through the oil through groove 307.

[0031] In the embodiment of the utility model, rubber gaskets are fixedly provided on the inner surface of the inner pressure ring 301 and the sealing outer plate 202, and sealing is performed by the rubber gaskets. The cross section of the oil dissipation groove 306 is arranged in a ring shape, and the ring shape facilitates the addition of oil to the outer side of the output rod.

[0032] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used.

[0033] When in use, the hydraulic cylinder body 1 seals the connection between the cylinder body and the output rod in 1 through the sealing shell 201 and the sealing outer plate 202 in the air sealing assembly 2 to prevent the entry of dust. When the output rod in the hydraulic cylinder body 1 is extended, an interference fit can be formed between the inner pressure ring 301 in the oil return lubrication assembly 3 and the output rod, so that when the output rod is extended, one end of the pressure plate 303 can be driven to move under the limit of the outer fixing ring 302, and the other end of the pressure plate 303 is in a stationary state, so that the pressure plate 303 is deformed, and the gas between the pressure plate 303 and the lubricating middle plate 203 is compressed, so that the lubricating oil between the pressure plate 303 of the sealing shell 201 and the lubricating middle plate 203 enters the oil guide groove 305 through the oil return hole 304, and then the lubricating oil enters the oil dispersion groove 306 through the oil guide groove 305, and then reaches the outside of the output rod through the oil through groove 307, and lubricates the outside of the output rod when the output rod is extended.

[0034] 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.

[0035] 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 hydraulic cylinder lubrication device, comprising a hydraulic cylinder body (1), wherein the hydraulic cylinder body (1) comprises a cylinder body and an output rod, characterized in that: An air sealing component (2) for blocking dust from entering is provided at one end of the hydraulic cylinder body (1), and an oil return lubrication component (3) for automatically lubricating the hydraulic cylinder body (1) is provided in the middle of the air sealing component (2); The air sealing assembly (2) comprises a sealing shell (201) fixedly arranged at one end of the cylinder body of the hydraulic cylinder body (1); a sealing outer plate (202) is fixedly arranged on the inner surface of the sealing shell (201); a lubricating middle plate (203) is fixedly arranged on the inner surface of the sealing shell (201); and a plurality of oil cleaning rings (204) are fixedly arranged on the outer surface of the lubricating middle plate (203).

2. A hydraulic cylinder lubrication device according to claim 1, characterized in that: The oil return lubrication assembly (3) comprises an outer fixing ring (302) fixedly arranged on the inner surface of the sealing shell (201), and an inner pressure ring (301) is slidably arranged on the outer surface of the output rod of the oil cylinder body (1).

3. A hydraulic cylinder lubrication device according to claim 2, characterized in that: A pressure plate (303) is fixedly arranged between the inner pressure ring (301) and the outer fixing ring (302), and the pressure plate (303) is made of chloroprene rubber.

4. A hydraulic cylinder lubrication device according to claim 3, characterized in that: An oil return hole (304) is provided on the inner surface of the sealing shell (201), an oil guide groove (305) is provided on the inner surface of the sealing shell (201), and the oil guide groove (305) and the oil return hole (304) are communicated with each other.

5. A hydraulic cylinder lubrication device according to claim 4, characterized in that: An oil dispersion groove (306) is provided on the inner surface of the sealing shell (201), and the oil guide groove (305) and the oil dispersion groove (306) are communicated with each other. An oil through groove (307) is provided on the inner surface of the lubricating middle plate (203), and the oil through groove (307) and the oil dispersion groove (306) are communicated with each other.

6. A hydraulic cylinder lubrication device according to claim 5, characterized in that: The inner pressure ring (301) and the inner surface of the sealing outer plate (202) are fixedly provided with rubber gaskets, and the cross section of the oil dispersion groove (306) is arranged in a ring shape.

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