Self-lubricating structure of hydraulic transmission rod

Abstract

The utility model relates to the technical field of hydraulic transmission rods, in particular to a self-lubricating structure of a hydraulic transmission rod, which comprises a cylinder body and a cylinder cover, the front end of the cylinder body is fixedly connected with the cylinder cover through bolts, the inner side of the cylinder cover is attached to the outer side of a piston rod assembly through a sealing ring, and the rear end of the piston rod assembly is fixedly connected with a piston sealing assembly. The piston rod assembly comprises a piston rod body, a liquid storage groove is formed in the inner side of the piston rod body, a filling channel is formed in the inner side of the piston rod body, a constant-pressure channel is formed in the front end, close to the liquid storage groove, of the piston rod body, a spring is fixedly connected to the side, provided with the liquid storage groove, of the piston rod body, and an outer sealing column is fixedly connected to the rear end of the spring. According to the constant-pressure piston rod, continuous oil supply to the rubber ring filling channel is achieved, long-term effective lubrication of a piston rod cylinder body is guaranteed, and the problem that frequent maintenance is needed due to the fact that the lubrication effect of a rubber ring is not lasting is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic transmission rod technical field, concretely is a kind of self-lubricating structure of hydraulic transmission rod. BACKGROUND

[0002] Hydraulic transmission rod, also known as hydraulic cylinder, is a key executive component in hydraulic system, responsible for converting hydraulic energy into mechanical energy to realize linear motion or force output, and the self-lubricating structure of hydraulic transmission rod usually refers to reducing the friction and wear between the hydraulic rod and its seal or cylinder by using materials or coatings with self-lubricating properties in the hydraulic system, thereby improving the efficiency and service life of the hydraulic system.

[0003] The existing lubricating mechanism usually uses a lubricating rubber ring to lubricate the piston rod, but the lubricating effect of the rubber ring is not durable, and it cannot provide long-term effective lubrication for the piston rod, resulting in the need to frequently add lubricating oil, which undoubtedly increases the maintenance workload, therefore, a self-lubricating structure of hydraulic transmission rod is proposed to solve the above problems. SUMMARY

[0004] The utility model aims at providing a self-lubricating structure of hydraulic transmission rod to solve the problem that the lubricating effect of the rubber ring is not durable, and it cannot provide long-term effective lubrication for the piston rod, resulting in the need to frequently add lubricating oil, which undoubtedly increases the maintenance workload.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A self-lubricating structure of hydraulic transmission rod, comprising a cylinder body and a cylinder cover, the cylinder body is fixedly connected with the cylinder cover at the front end by bolts, the inner side of the cylinder cover is attached to the outer side of the piston rod assembly through a sealing ring, the rear end of the piston rod assembly is fixedly connected with a piston sealing assembly, the piston rod assembly comprises a piston rod body, a liquid storage groove is formed in the inner side of the piston rod body, a filling channel is formed in the inner side of the piston rod body, a constant pressure channel is formed in the front end of the piston rod body near the liquid storage groove, a spring is fixedly connected to one side of the liquid storage groove formed in the piston rod body, an outer sealing column is fixedly connected to the rear end of the spring, a filter block is fixedly connected to the inner side of one end of the constant pressure channel formed in the piston rod body, a countersunk head bolt is helically attached to the inner side of one end of the filling channel formed in the piston rod body, a rubber taper block is fixedly connected to the bottom end of the countersunk head bolt, the piston sealing assembly comprises a plug column, the inner side of the front end of the plug column is attached to the outer side of a first sealing rubber ring, the inner side of the rear end of the plug column is attached to the outer side of a second sealing rubber ring, an oil inlet hole is formed in the inner side of the piston rod body, an oil distribution hole is formed in the inner side of the plug column, an oil collection groove is formed in the middle end of the plug column, and the inner side of the oil collection groove formed in the plug column is fixedly connected with an arc-shaped support plate.

[0007] As the further optimization of the utility model, wherein: the front end of the cylinder body is sealed with the rear end of the cylinder cover through a sealing ring, the inner side of the cylinder cover is hollow, the sealing ring is fixedly connected inside the cylinder cover, and the outer side of the piston rod body is attached to the inner side of the cylinder cover.

[0008] As the further optimization of the utility model, wherein: the front end of the cylinder body is sealed with the rear end of the cylinder cover through a sealing ring, the inner side of the cylinder cover is hollow, the sealing ring is fixedly connected inside the cylinder cover, and the outer side of the piston rod body is attached to the inner side of the cylinder cover.

[0009] As the further optimization of the utility model, wherein: the front end of the cylinder body is sealed with the rear end of the cylinder cover through a sealing ring, the inner side of the cylinder cover is hollow, the sealing ring is fixedly connected inside the cylinder cover, and the outer side of the piston rod body is attached to the inner side of the cylinder cover.

[0010] As the further optimization of the utility model, wherein: the front end of the cylinder body is sealed with the rear end of the cylinder cover through a sealing ring, the inner side of the cylinder cover is hollow, the sealing ring is fixedly connected inside the cylinder cover, and the outer side of the piston rod body is attached to the inner side of the cylinder cover.

[0011] As the further optimization of the utility model, wherein: the front end of the cylinder body is sealed with the rear end of the cylinder cover through a sealing ring, the inner side of the cylinder cover is hollow, the sealing ring is fixedly connected inside the cylinder cover, and the outer side of the piston rod body is attached to the inner side of the cylinder cover.

[0012] As the further optimization of the utility model, wherein: the front end of the cylinder body is sealed with the rear end of the cylinder cover through a sealing ring, the inner side of the cylinder cover is hollow, the sealing ring is fixedly connected inside the cylinder cover, and the outer side of the piston rod body is attached to the inner side of the cylinder cover.

[0013] Compared with the prior art, the utility model has the advantages of:

[0014] The utility model discloses a piston rod assembly and piston sealing assembly are set up, and the device realizes the continuous oil supply to the rubber ring filling path, ensures the long -term effective lubrication of piston rod cylinder body, and this design reduces the problem that the rubber ring lubrication effect is not durable and needs frequent maintenance, simultaneously, the lubricating oil between the first sealing rubber ring and the second sealing rubber ring is kept under the sealing effect, provides the durable lubrication effect for hydraulic system, reduces the friction between parts, improves the working efficiency and service life of system, in addition, when lubricating oil needs supplementing, through the filtering effect of filter block and the dismounting mechanism of counterbore bolt and rubber taper block, the reinstallation of lubricating oil can be conveniently carried out, ensures the simplicity of maintenance process and the long -term stable operation of system. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is whole structure schematic diagram of the utility model;

[0016] Figure 2 It is cylinder body structure schematic diagram of the utility model;

[0017] Figure 3 It is cylinder cover structure schematic diagram of the utility model;

[0018] Figure 4 It is piston rod assembly structure schematic diagram of the utility model;

[0019] Figure 5 It is A place structure schematic diagram of the utility model Figure 4 ;

[0020] Figure 6 It is B place structure schematic diagram of the utility model Figure 4 ;

[0021] In the drawing: 1, cylinder body;2, cylinder cover;

[0022] 3, piston rod assembly;31, piston rod body;32, liquid storage groove;33, filling path;34, constant pressure path;35, spring;36, outer sealing column;37, filter block;38, counterbore bolt;39, rubber taper block;

[0023] 4, piston sealing assembly;41, plug column;42, first sealing rubber ring;43, second sealing rubber ring;44, oil meeting hole;45, oil distribution hole;46, oil collection storage groove;47, arc support plate. DETAILED DESCRIPTION

[0024] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts under the premise that no creative efforts are made, belong to the scope of protection of the present application.

[0025] It is to be noted that the terms used herein are merely for the purpose of describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and it should also be understood that, when the terms "comprise" and / or "include" are used in the specification, there is a presence of a feature, step, operation, device, component and / or combination thereof.

[0026] Please refer to Figures 1-6 The present application provides a technical scheme:

[0027] The self-lubricating structure of the hydraulic transmission rod comprises a cylinder body 1 and a cylinder cover 2, the front end of the cylinder body 1 is fixedly connected with the cylinder cover 2 through bolts, the inner side of the cylinder cover 2 is attached to the outer side of a piston rod assembly 3 through a sealing ring, the rear end of the piston rod assembly 3 is fixedly connected with a piston sealing assembly 4, the piston rod assembly 3 comprises a piston rod body 31, the inner side of the piston rod body 31 is provided with a liquid storage groove 32, the inner side of the piston rod body 31 is provided with a filling channel 33, the front end of the piston rod body 31 close to the liquid storage groove 32 is provided with a constant pressure channel 34, the side of the liquid storage groove 32 provided in the piston rod body 31 is fixedly connected with a spring 35, the rear end of the spring 35 is fixedly connected with an outer sealing column 36, the inner side of one end of the constant pressure channel 34 provided in the piston rod body 31 is fixedly connected with a filter block 37, the inner side of one end of the filling channel 33 provided in the piston rod body 31 is spirally attached with a countersunk bolt 38, the bottom end of the countersunk bolt 38 is fixedly connected with a rubber taper block 39, the piston sealing assembly 4 comprises a plug column 41, the inner side of the front end of the plug column 41 is attached to the outer side of a first sealing rubber ring 42, the inner side of the rear end of the plug column 41 is attached to the outer side of a second sealing rubber ring 43, the inner side of the piston rod body 31 is provided with an oil inlet hole 44, the inner side of the plug column 41 is provided with an oil distribution hole 45, the middle end of the plug column 41 is provided with an oil collection groove 46, and the inner side of the oil collection groove 46 provided in the plug column 41 is fixedly connected with an arc-shaped supporting plate 47.

[0028] As a further implemented scheme of the present scheme, the front end of the cylinder body 1 is sealed with the rear end of the cylinder cover 2 through a sealing ring, the inner side of the cylinder cover 2 is hollow, and the inner side of the cylinder cover 2 is fixedly connected with a sealing ring, the outer side of the piston rod body 31 is attached to the inner side of the cylinder cover 2, thereby enhancing the sealing performance of the hydraulic transmission rod and ensuring the stability and reliability of the hydraulic system;

[0029] As a further implementation of the present scheme, the plug column 41 slides on the inside of the cylinder body 1, the outside of the first sealing rubber ring 42 is attached to the inside of the cylinder body 1, the outside of the second sealing rubber ring 43 is attached to the inside of the cylinder body 1, and the first sealing rubber ring 42 and the second sealing rubber ring 43 are embedded in the inside of the plug column 41, and the inside of the front end and the inside of the rear end of the plug column 41 are provided with mounting grooves, which provide an optimized design for positioning and lubrication of the assembly, helping to reduce friction and wear;

[0030] As a further implementation of the present scheme, the shape of the liquid storage tank 32 is a cylindrical body with two ends, the liquid storage tank 32 penetrates the rear end of the piston rod body 31, the filling channel 33 communicates with the rear end of the liquid storage tank 32, the constant pressure channel 34 communicates with the front end of the liquid storage tank 32, one end of the constant pressure channel 34 penetrates the outside of the piston rod body 31, the outer sealing column 36 is in the shape of a cylindrical body, a sealing ring is installed on the outside of the outer sealing column 36, the outside of the outer sealing column 36 is attached to the inside of the liquid storage tank 32 provided on the piston rod body 31 through the sealing ring, one end of the filling channel 33 penetrates the outside of the piston rod body 31, the filling channel 33 is fixed with a thread near the inside of the countersunk head bolt 38, the bottom end of the rubber taper block 39 is attached to the inside of the filling channel 33, and the shape of the rubber taper block 39 is a conical body, which ensures effective delivery and sealing of the lubricating oil, this design improves the delivery efficiency of the lubricating oil, prevents oil leakage, ensures long-term effective lubrication inside the hydraulic transmission rod, and provides convenience for storage and replenishment of lubricating oil, this design simplifies the maintenance process and makes it easier to operate the lubricating oil replenishment;

[0031] As a further implementation of the present scheme, the front end of the plug column 41 is welded and fixed to the front end of the piston rod body 31, one end of the liquid storage tank 32 communicates with the inside of the oil inlet hole 44, the oil inlet hole 44 communicates with the oil distribution hole 45, the oil distribution hole 45 communicates with the oil collection tank 46, the oil collection tank 46 is in the shape of a circular ring body, the oil collection tank 46 penetrates the outside of the plug column 41, the arc-shaped support plate 47 is in the shape of an arc body, the outside of the arc-shaped support plate 47 is attached to the inside of the cylinder body 1, the inside of the oil collection tank 46, the oil distribution hole 45, the oil inlet hole 44 and the liquid storage tank 32 is provided with hydraulic oil, which ensures the uniform distribution and long-term stability of the hydraulic oil in the system, and the circular ring body shape of the oil collection tank 46 penetrates the outside of the plug column 41, further optimizing the flow and lubrication effect of the hydraulic oil.

[0032] Work flow: when the rubber ring is provided with long-term effective lubrication, in use, the rubber block 39 seals one end of the filling channel 33, the rubber block 39 is made of rubber material, which can prevent the lubricating oil in the filling channel 33 from overflowing, under the elastic force of the spring 35, the outer sealing column 36 is provided with a continuous backward moving force, the outer sealing column 36 is provided with a sealing ring on the outside, which can prevent the lubricating oil from overflowing from the outside of the outer sealing column 36, under the pushing action of the outer sealing column 36, the lubricating oil in the liquid storage tank 32 continuously enters the oil inlet hole 44, and then enters the oil distribution hole 45, and then enters the oil collection tank 46, at this time, the lubricating oil is between the first sealing rubber ring 42 and the second sealing rubber ring 43, and flows between the first sealing rubber ring 42 and the second sealing rubber ring 43 through the gap between the arc-shaped supporting plate 47 and the cylinder body 1, so that the first sealing rubber ring 42 and the second sealing rubber ring 43 are kept full of lubricating oil, the first sealing rubber ring 42 and the second sealing rubber ring 43 play a sealing role between the cylinder body 1 and the plug column 41, and under the sealing action of the first sealing rubber ring 42 and the second sealing rubber ring 43, the lubricating oil is stored in the oil collection tank 46, when the piston rod assembly 3 and the piston sealing assembly 4 move in the cylinder body 1, long-term effective lubrication is provided, the friction between the piston sealing assembly 4, the piston rod assembly 3 and the cylinder body 1 is reduced, and the efficiency and service life of the hydraulic system are improved, when the lubricating oil between the first sealing rubber ring 42 and the second sealing rubber ring 43 is lost, the spring 35 continues to supply lubricating oil between the first sealing rubber ring 42 and the second sealing rubber ring 43, and the effect of persistent lubrication is realized, when the spring 35 moves, the external gas flows from the constant pressure channel 34, the filter block 37 plays a role in filtering external impurities, when regular maintenance is needed to add lubricating oil in the piston rod assembly 3, one end of the constant pressure channel 34 is sealed, at this time, the outer sealing column 36 is difficult to move, the screwdriver is used to remove the countersunk head bolt 38 and the rubber block 39, the syringe is inserted into one end of the filling channel 33, the lubricating oil is injected from the filling channel 33 into the liquid storage tank 32 and the oil inlet hole 44, until the lubricating oil is full, the countersunk head bolt 38 is screwed into the filling channel 33, and the rubber block 39 seals one end of the filling channel 33, the lubricating oil is added.

[0033] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A self-lubricating structure for a hydraulic transmission rod, comprising a cylinder body (1) and a cylinder head (2), characterized in that: The cylinder body (1) is fixedly connected to the cylinder head (2) by bolts at the front end. The inner side of the cylinder head (2) is fitted with the outer side of the piston rod assembly (3) by a sealing ring. The piston rod assembly (3) is fixedly connected to the piston sealing assembly (4) at the rear end. The piston rod assembly (3) includes a piston rod body (31). A liquid storage tank (32) is provided on the inner side of the piston rod body (31), a filling channel (33) is provided on the inner side of the piston rod body (31), a constant pressure channel (34) is provided on the front end of the piston rod body (31) near the liquid storage tank (32), a spring (35) is fixedly connected to one side of the liquid storage tank (32) of the piston rod body (31), an outer sealing column (36) is fixedly connected to the rear end of the spring (35), a filter block (37) is fixedly connected to the inner side of one end of the constant pressure channel (34) of the piston rod body (31), and a countersunk bolt is spirally fitted to the inner side of one end of the filling channel (33) of the piston rod body (31). (38) A rubber cone block (39) is fixedly connected to the bottom end of the countersunk bolt (38). The piston sealing assembly (4) includes a plunger (41). The inner side of the front end of the plunger (41) is in contact with the outer side of the first sealing rubber ring (42). The inner side of the rear end of the plunger (41) is in contact with the outer side of the second sealing rubber ring (43). An oil-facing hole (44) is opened on the inner side of the piston rod body (31). An oil-distributing hole (45) is opened on the inner side of the plunger (41). An oil-collecting reservoir (46) is opened at the middle end of the plunger (41). An arc-shaped support plate (47) is fixedly connected to the inner side of the oil-collecting reservoir (46) opened by the plunger (41).

2. The self-lubricating structure of a hydraulic transmission rod according to claim 1, characterized in that: The front end of the cylinder body (1) is sealed to the rear end of the cylinder head (2) by a sealing ring. The inner side of the cylinder head (2) is hollow. The sealing ring is fixedly connected inside the cylinder head (2). The outer side of the piston rod body (31) is in contact with the inner side of the cylinder head (2).

3. The self-lubricating structure of a hydraulic transmission rod according to claim 1, characterized in that: The outer side of the plunger (41) slides on the inner side of the cylinder (1), the outer side of the first sealing rubber ring (42) is in contact with the inner side of the cylinder (1), the outer side of the second sealing rubber ring (43) is in contact with the inner side of the cylinder (1), the first sealing rubber ring (42) and the second sealing rubber ring (43) are both embedded and in contact with the inner side of the plunger (41), and the inner side of the front end and the inner side of the rear end of the plunger (41) are provided with mounting grooves.

4. The self-lubricating structure of a hydraulic transmission rod according to claim 1, characterized in that: The liquid storage tank (32) is cylindrical at both ends. The liquid storage tank (32) passes through the rear end of the piston rod body (31). The filling channel (33) is connected to the rear end of the liquid storage tank (32). The constant pressure channel (34) is connected to the front end of the liquid storage tank (32). One end of the constant pressure channel (34) passes through the outside of the piston rod body (31). The outer sealing column (36) is cylindrical. A sealing ring is installed on the outside of the outer sealing column (36). The outside of the outer sealing column (36) is in contact with the inside of the liquid storage tank (32) of the piston rod body (31) through the sealing ring.

5. The self-lubricating structure of a hydraulic transmission rod according to claim 1, characterized in that: One end of the filling channel (33) passes through the outside of the piston rod body (31). The filling channel (33) is fixed with threads on the inside of the countersunk bolt (38). The bottom end of the rubber cone (39) fits against the inside of the filling channel (33). The shape of the rubber cone (39) is a cone.

6. The self-lubricating structure of a hydraulic transmission rod according to claim 1, characterized in that: The front end of the plunger (41) is welded and fixed to the front end of the piston rod body (31). One end of the liquid storage tank (32) is connected to the inside of the oil inlet (44). The oil inlet (44) is connected to the oil distribution hole (45). The oil distribution hole (45) is connected to the oil collection tank (46). The oil collection tank (46) is annular in shape and penetrates the outside of the plunger (41).

7. The self-lubricating structure of a hydraulic transmission rod according to claim 1, characterized in that: The arc-shaped support plate (47) is arc-shaped, and the outer side of the arc-shaped support plate (47) is attached to the inner side of the cylinder body (1). The oil collection tank (46), oil distribution hole (45), oil receiving hole (44) and liquid storage tank (32) are filled with hydraulic oil.

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