Bushing for oil cylinder assembly

Abstract

The utility model relates to the technical field of oil cylinder assemblies, and discloses a bushing for an oil cylinder assembly, which comprises an outer bushing, the inner wall of the outer bushing is fixedly connected with an inner bushing, the top end of the front side of the outer bushing is fixedly connected with an oil injection nozzle, and oil injection grooves are formed in the middle parts of the top ends of the front sides of the outer bushing and the inner bushing. The rear side of the inner wall of the oil injection groove is fixedly connected with a tension spring, the front end of the tension spring is fixedly connected with a sealing steel ball, the left side and the right side of the rear end of the inner wall of the oil injection groove communicate with transverse guide pipes, and longitudinal guide pipes communicate between the adjacent transverse guide pipes. According to the oil cylinder assembly, lubricating grease is injected through the oil injection nozzle, enters the oil injection groove and is diffused through the transverse guide pipe and the longitudinal guide pipe, finally, the lubricating grease flows out through the oil outlet hole communicated with the transverse guide pipe, the contact face between the inner bush and the oil cylinder is lubricated, and effective lubrication and protection of the oil cylinder assembly are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil cylinder assemblies, and particularly relates to a bushing for an oil cylinder assembly. Background Technique

[0002] An oil cylinder assembly is a functional whole composed of multiple components, mainly used to convert hydraulic energy into mechanical energy. When hydraulic oil enters the rodless cavity of the oil cylinder through the oil inlet and outlet, the pressure of the hydraulic oil pushes the piston to move towards the rod cavity, thereby driving the piston rod to extend. At this time, the oil cylinder does external work and converts hydraulic energy into mechanical energy. When the hydraulic oil enters the rod cavity of the oil cylinder, the piston moves towards the rodless cavity and the piston rod retracts. By controlling the flow direction and pressure of the hydraulic oil, the reciprocating motion of the oil cylinder can be achieved.

[0003] The bushing for the oil cylinder assembly is a bushing that reduces wear and seals during the operation of the oil cylinder. During the operation of the oil cylinder, relative movement will occur between the piston rod and the cylinder barrel. The bushing is installed between the piston rod and the cylinder barrel, which can effectively reduce the direct contact between the piston rod and the cylinder barrel, thereby reducing the wear between the two.

[0004] The existing bushing for the oil cylinder assembly is only composed of a bushing body and a sealing ring. When the oil cylinder assembly works for a long time, a large amount of heat will be generated due to the long-term friction between metals. The long-term accumulation of heat will affect the mechanical properties of metal components, resulting in deformation and reduced hardness of the bushing, and affecting its working efficiency. Content of the Utility Model

[0005] In order to make up for the above deficiencies, the utility model provides a bushing for an oil cylinder assembly, aiming to improve the problem that when the oil cylinder assembly works for a long time, a large amount of heat will be generated due to the long-term friction between metals, and the long-term accumulation of heat will affect the mechanical properties of metal components, resulting in deformation and reduced hardness of the bushing, and affecting its working efficiency.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: A bushing for an oil cylinder assembly includes an outer bushing, an inner bushing is fixedly connected to the inner wall of the outer bushing, an oil injection nozzle is fixedly connected to the front top end of the outer bushing, oil injection grooves are opened in the middle of the front top ends of the outer bushing and the inner bushing, a tension spring is fixedly connected to the rear side inner wall of the oil injection groove, a sealing steel ball is fixedly connected to the front end of the tension spring, transverse ducts are communicated with the left and right sides of the rear end inner wall of the oil injection groove, longitudinal ducts are communicated between adjacent ones of the plurality of transverse ducts, a plurality of oil outlet holes are equidistantly opened in the inner wall of the inner bushing, and the plurality of oil outlet holes are communicated with the plurality of transverse ducts. Fastening mechanisms are arranged on the upper and lower sides of the outer wall of the outer bushing.

[0007] As a further description of the above technical solution:

[0008] The fastening mechanism includes a fastening groove. Arc-shaped steel rings are provided on the front and rear sides of the inner wall of the fastening groove. Hinges are fixedly connected to the right ends of the two arc-shaped steel rings. Fixed blocks are fixedly connected to the left ends of the two arc-shaped steel rings. Fixing bolts penetrate through the front sides of the two fixed blocks, and fixing nuts are threadedly connected to the rear ends of the fixing bolts.

[0009] As a further description of the above technical solution:

[0010] An overflow hole is provided at the rear side of the bottom end of the inner lining sleeve, and the top of the overflow hole communicates with the bottom rear side of the bottom transverse conduit.

[0011] As a further description of the above technical solution:

[0012] A hexagonal groove is provided in the middle of the front side of the fixing bolt, and the inner wall of the hexagonal groove is a regular hexagonal groove.

[0013] As a further description of the above technical solution:

[0014] A round head is fixedly connected to the rear end of the fixing nut, and the outer wall of the round head is designed to be smooth.

[0015] As a further description of the above technical solution:

[0016] The outer wall of the outer lining sleeve adopts a frosted process, and the inner wall of the inner lining sleeve adopts a smooth process.

[0017] As a further description of the above technical solution:

[0018] The outer sides of the top and bottom ends of the outer lining sleeve and the inner sides of the top and bottom ends of the inner lining sleeve are both designed to be smooth.

[0019] As a further description of the above technical solution:

[0020] A plurality of the oil outlet holes are arranged in an annular array structure on the inner wall of the inner lining sleeve, and the inner lining sleeve is made of wear-resistant alloy material.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, grease is injected through the grease injection nozzle, so that the grease enters the grease injection groove, diffuses through the transverse conduit and the longitudinal conduit, and finally the grease flows out through the oil outlet holes communicated with the transverse conduit, lubricating the contact surface between the inner lining sleeve and the oil cylinder, realizing effective lubrication and protection of the oil cylinder assembly.

[0023] 2. In the present utility model, the fastening groove provides space for the installation and operation of the fastening mechanism. When it is necessary to fasten the oil cylinder assembly, the two arc-shaped steel rings are connected by hinges. During installation, after the arc-shaped steel rings are sleeved on the oil cylinder, they are closed, and the fixing nuts at the rear end are tightened with fixing bolts to ensure that the outer bushing and the inner bushing will not be displaced during operation, thereby ensuring the effective exertion of the protection and lubrication functions of the bushing on the oil cylinder. Description of the Drawings

[0024] Figure 1 A perspective view of a bushing for an oil cylinder assembly proposed by the present utility model;

[0025] Figure 2 A cross-sectional view of the inner bushing of a bushing for an oil cylinder assembly proposed by the present utility model;

[0026] Figure 3 A cross-sectional view of the oil injection groove of a bushing for an oil cylinder assembly proposed by the present utility model;

[0027] Figure 4 A structural schematic diagram of the fastening mechanism of a bushing for an oil cylinder assembly proposed by the present utility model;

[0028] Figure 5 A structural schematic diagram of the hinge of a bushing for an oil cylinder assembly proposed by the present utility model.

[0029] Legend Explanation:

[0030] 1. Outer bushing; 2. Fastening mechanism; 201. Fastening groove; 202. Arc-shaped steel ring; 203. Hinge; 204. Fixed block; 205. Fixed bolt; 206. Fixed nut; 3. Inner bushing; 4. Oil injection nozzle; 5. Oil injection groove; 6. Tension spring; 7. Sealing steel ball; 8. Longitudinal conduit; 9. Transverse conduit; 10. Oil outlet hole; 11. Overflow hole; 12. Hexagonal groove; 13. Round head. Detailed Embodiment

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0032] Refer to Figure 1 、 Figure 2 and Figure 3, an embodiment provided by the present utility model: a bushing for an oil cylinder assembly, including an outer bushing 1, an inner bushing 3 is fixedly connected to the inner wall of the outer bushing 1, an oil injection nozzle 4 is fixedly connected to the front top end of the outer bushing 1, oil injection grooves 5 are provided in the middle of the front top ends of the outer bushing 1 and the inner bushing 3, a tension spring 6 is fixedly connected to the rear side inner wall of the oil injection groove 5, a sealing steel ball 7 is fixedly connected to the front end of the tension spring 6, horizontal ducts 9 are communicated with the left and right sides of the rear end inner wall of the oil injection groove 5, longitudinal ducts 8 are communicated between adjacent ones of the plurality of horizontal ducts 9, a plurality of oil outlet holes 10 are equidistantly provided in the inner wall of the inner bushing 3, and the plurality of oil outlet holes 10 are communicated with the plurality of horizontal ducts 9; fastening mechanisms 2 are provided on the upper and lower sides of the outer wall of the outer bushing 1;

[0033] Specifically, the outer bushing 1 mainly plays a role of protection and support, providing an external framework for the entire bushing structure. The inner bushing 3 is in direct contact with the oil cylinder, reducing friction and wear during the operation of the oil cylinder. When lubrication of the bushing is required, grease is injected through the oil injection nozzle 4, so that the grease enters the oil injection groove 5. At this time, under the action of the tension spring 6, the sealing steel ball 7 seals the oil injection groove 5 to prevent grease leakage. When the pressure of the injected grease reaches a certain level, the sealing steel ball 7 is pushed to move backward, and the grease enters the rear side inner wall of the oil injection groove 5. From here, the grease diffuses through the horizontal ducts 9 and the longitudinal ducts 8. The plurality of horizontal ducts 9 and the longitudinal ducts 8 are interconnected to ensure that the grease can be evenly distributed in all directions. Finally, the grease flows out through the oil outlet holes 10 communicated with the horizontal ducts 9 to lubricate the contact surface between the inner bushing 3 and the oil cylinder. This can effectively reduce the friction coefficient, improve the working efficiency and service life of the oil cylinder, and at the same time reduce wear and energy loss, realizing effective lubrication and protection of the oil cylinder assembly.

[0034] Referring to Figure 2 , Figure 4 and Figure 5 , the fastening mechanism 2 includes a fastening groove 201, arc-shaped steel rings 202 are provided on the front and rear sides of the inner wall of the fastening groove 201, hinges 203 are fixedly connected to the right ends of the two arc-shaped steel rings 202, fixing blocks 204 are fixedly connected to the left ends of the two arc-shaped steel rings 202, fixing bolts 205 penetrate through the front sides of the two fixing blocks 204, and fixing nuts 206 are threadedly connected to the rear ends of the fixing bolts 205;

[0035] Specifically, the fastening groove 201 provides space for the installation and operation of the fastening mechanism 2. When the oil cylinder assembly needs to be fastened, the two arc-shaped steel rings 202 can better fit the outer shape of the oil cylinder and provide uniform fastening force. The right ends of the two arc-shaped steel rings 202 are connected by a hinge 203, which enables them to open and close like a door. During installation, the arc-shaped steel rings 202 are opened, put on the oil cylinder and then closed. The left ends of the two arc-shaped steel rings 202 are connected by a fixing block 204, and the fixing bolts 205 penetrating through the fixing block 204 tightly connect the two fixing blocks 204 together. After the fixing nuts 206 at the rear ends of the fixing bolts 205 are tightened, the connection stability is further enhanced, enabling the fastening mechanism 2 to be firmly fixed on the oil cylinder, ensuring that the outer bushing 1 and the inner bushing 3 will not be displaced during operation, and thus ensuring the effective exertion of the protection and lubrication functions of the bushing on the oil cylinder.

[0036] Refer to Figure 3 and Figure 4 , an overflow hole 11 is provided at the rear side of the bottom end of the inner bushing 3, and the top of the overflow hole 11 communicates with the bottom rear side of the bottom transverse conduit 9; a hexagonal groove 12 is provided in the middle of the front side of the fixing bolt 205, and the inner wall of the hexagonal groove 12 is a regular hexagonal groove; a round head 13 is fixedly connected to the rear end of the fixing nut 206, and the outer wall of the round head 13 is designed to be smooth;

[0037] Specifically, when there is too much lubricating oil or too high pressure in the transverse conduit 9, the overflow hole 11 can play a role in adjusting and discharging the excess lubricating oil, preventing adverse effects on the oil cylinder assembly due to excessive lubricating oil, and ensuring the stability of the lubrication system. The hexagonal groove 12 facilitates the installation and removal of the fixing bolt 205, and the design of the regular hexagonal groove enables the use of corresponding hexagonal tools for operation. The round head 13 at the rear end of the fixing nut 206 is designed to be smooth. On the one hand, it can prevent scratches and other injuries to the operators during installation and use, improving safety. On the other hand, the smooth design also makes the fastening process smoother, reducing the frictional resistance.

[0038] Refer to Figure 1 and Figure 2 , the outer wall of the outer bushing 1 adopts a frosted process, and the inner wall of the inner bushing 3 adopts a smooth process; the top and bottom outer sides of the outer bushing 1 and the top and bottom inner sides of the inner bushing 3 are both designed to be smooth; a plurality of oil outlet holes 10 are arranged in an annular array structure on the inner wall of the inner bushing 3, and the inner bushing 3 is made of wear-resistant alloy material;

[0039] Specifically, the frosted process on the outer wall of the outer bushing 1 increases the friction with the external installation environment, making the bushing more stable after installation and less likely to displace. The smooth process on the inner wall of the inner bushing 3 reduces the friction with the oil cylinder, reduces wear, and extends the service life of the oil cylinder and the bushing. The rounded design at the top and bottom of the outer bushing 1 and the inner bushing 3 can avoid harm to the operator during installation and use, and also reduce the scratching and wear when contacting other components, improving the reliability and service life of the entire bushing. The oil outlet holes 10 with an annular array structure can distribute the lubricating oil more evenly to the contact surface between the oil cylinder and the inner bushing 3, ensuring the consistency of the lubrication effect. The inner bushing 3 is made of wear-resistant alloy material, improving its wear resistance and strength, and can better withstand the friction and pressure during the operation of the oil cylinder, ensuring the long-term stable use of the bushing.

[0040] Working principle: The outer bushing 1 mainly plays a role in protection and support, providing an external framework for the entire bushing structure. The inner bushing 3 is in direct contact with the oil cylinder, reducing friction and wear during the operation of the oil cylinder. When lubricating the bushing is required, grease is injected through the grease injection nozzle 4, and the grease enters the grease injection groove 5. At this time, the sealing steel ball 7, under the action of the tension spring 6, seals the grease injection groove 5 to prevent grease leakage. When the pressure of the injected grease reaches a certain level, it pushes the sealing steel ball 7 to move backward, and the grease enters the rear side of the inner wall of the grease injection groove 5. From here, the grease diffuses through the transverse conduit 9 and the longitudinal conduit 8. Multiple transverse conduits 9 and longitudinal conduits 8 are interconnected to ensure that the grease can be evenly distributed in all directions. Finally, the grease flows out through the oil outlet holes 10 connected to the transverse conduit 9 to lubricate the contact surface between the inner bushing 3 and the oil cylinder. This can effectively reduce the friction coefficient, improve the working efficiency and service life of the oil cylinder, and at the same time reduce wear and energy loss.

[0041] Moreover, the fastening groove 201 provides space for the installation and operation of the fastening mechanism 2. When it is necessary to fasten the oil cylinder assembly, the two arc-shaped steel rings 202 can better fit the shape of the oil cylinder and provide uniform fastening force. The right ends of the two arc-shaped steel rings 202 are connected by a hinge 203, which enables them to open and close like a door. During installation, the arc-shaped steel rings 202 are opened, put on the oil cylinder and then closed. The left ends of the two arc-shaped steel rings 202 are connected by a fixing block 204, and the fixing bolts 205 passing through the fixing block 204 tightly connect the two fixing blocks 204 together. After the fixing nut 206 at the rear end of the fixing bolt 205 is tightened, the stability of the connection is further enhanced, enabling the fastening mechanism 2 to be firmly fixed on the oil cylinder, ensuring that the outer bushing 1 and the inner bushing 3 will not displace during the operation process.

[0042] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present 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 perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A bushing for a cylinder assembly, comprising an outer bushing (1), characterized in that: The inner wall of the outer bushing (1) is fixedly connected to the inner bushing (3), the front top of the outer bushing (1) is fixedly connected to an oiling nozzle (4), the middle parts of the front tops of the outer bushing (1) and the inner bushing (3) are both provided with oiling grooves (5), the rear side of the inner wall of the oiling groove (5) is fixedly connected to a tension spring (6), the front end of the tension spring (6) is fixedly connected to a sealing steel ball (7), the left and right sides of the rear end of the inner wall of the oiling groove (5) are both connected to transverse ducts (9), and the adjacent transverse ducts (9) are all connected to longitudinal ducts (8), the inner wall of the inner bushing (3) is equidistantly provided with a plurality of oil outlet holes (10), the plurality of oil outlet holes (10) are connected to the plurality of transverse ducts (9), and the upper and lower sides of the outer wall of the outer bushing (1) are both provided with fastening mechanisms (2).

2. A bushing for a cylinder assembly according to claim 1, characterized in that: The fastening mechanism (2) comprises a fastening groove (201), the front and rear sides of the inner wall of the fastening groove (201) are both provided with arc-shaped steel rings (202), the right ends of the two arc-shaped steel rings (202) are both fixedly connected with hinges (203), the left ends of the two arc-shaped steel rings (202) are both fixedly connected with fixing blocks (204), the front sides of the two fixing blocks (204) are both penetrated by fixing bolts (205), and the rear ends of the fixing bolts (205) are threadedly connected with fixing nuts (206).

3. The bushing for a cylinder assembly according to claim 1, characterized in that: An overflow hole (11) is provided at the rear side of the bottom end of the inner liner (3), and the top of the overflow hole (11) is connected to the rear bottom of the transverse conduit (9) at the bottom end.

4. A bushing for a cylinder assembly according to claim 2, characterized in that: A hexagonal groove (12) is provided in the middle of the front side of the fixing bolt (205), and the inner wall of the hexagonal groove (12) is a regular hexagonal groove.

5. The bushing for a cylinder assembly according to claim 2, characterized in that: The rear end of the fixing nut (206) is fixedly connected to a round head (13), and the outer wall of the round head (13) is designed to be smooth.

6. The bushing for a cylinder assembly according to claim 1, characterized in that: The outer wall of the outer bushing (1) is made by a frosting process, and the inner wall of the inner bushing (3) is made by a smoothing process.

7. The bushing for a cylinder assembly according to claim 1, characterized in that: The top and bottom outer sides of the outer bushing (1) and the top and bottom inner sides of the inner bushing (3) are both designed to be smooth.

8. The bushing for a cylinder assembly according to claim 1, characterized in that: The plurality of oil outlet holes (10) are arranged in an annular array structure on the inner wall of the inner bushing (3), and the inner bushing (3) is made of a wear-resistant alloy material.

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