A lubricating structure of a hydraulic device

By using the snap-fit ​​structure and threaded connection between the snap-fit ​​block and the snap-fit ​​frame, the problems of cumbersome disassembly and assembly of the lubrication structure of hydraulic equipment and inconvenient lubricant delivery are solved, realizing rapid disassembly and assembly and stable lubricant delivery, thereby improving maintenance efficiency and automation.

CN224579586UActive Publication Date: 2026-07-31SHANGHAI QUNHE HYDRAULIC EQUIP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI QUNHE HYDRAULIC EQUIP CO LTD
Filing Date
2025-09-04
Publication Date
2026-07-31

AI Technical Summary

Technical Problem

The disassembly and assembly process of the existing hydraulic equipment lubrication structure is cumbersome, time-consuming and inconvenient, and the lubricant delivery is not automated enough, resulting in low maintenance efficiency and high risk of lubricant leakage.

Method used

The lubrication assembly, which uses a snap-fit ​​structure of snap-fit ​​blocks and snap-fit ​​frames combined with threaded connections, enables quick assembly and disassembly and stable delivery of lubricant. It includes snap-fit ​​blocks, snap-fit ​​springs, snap-fit ​​connectors, snap-fit ​​frames, oil pump body, oil storage tank, and output oil pipe. The assembly achieves quick installation and sealed connection through snap-fit ​​and threaded connections.

Benefits of technology

It enables quick assembly and disassembly of lubrication devices and stable lubricant delivery, reduces labor costs and the risk of lubricant leakage, and improves maintenance efficiency and automation.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224579586U_ABST
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Abstract

This utility model discloses a lubrication structure for hydraulic equipment, relating to the field of hydraulic equipment lubrication. It includes a hydraulic equipment body, with an installation component fixedly connected to the outer side of the body. An oiling component is fixedly connected to the lower end of the installation component. The installation component includes a snap-fit ​​block disposed on the outer side of the hydraulic equipment body. Circular grooves are formed on both sides of the snap-fit ​​block, and snap-fit ​​springs are fixedly connected inside the grooves. This utility model, employing the above structure, allows for quick assembly and disassembly without tools, eliminating the cumbersome operations of traditional bolt tightening or welding connections, significantly shortening installation and maintenance time. The snap-fit ​​structure automatically locks through the spring force, ensuring both tightness and stability of the connection. When disassembly is needed, the locking can be easily released by pressing the snap-fit ​​connector, making operation flexible and convenient, effectively improving the maintenance efficiency of the lubrication device and reducing labor costs.
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Description

Technical Field

[0001] This utility model belongs to the field of hydraulic equipment lubrication, and specifically relates to a lubrication structure for hydraulic equipment. Background Technology

[0002] In the long-term operation of hydraulic equipment, the friction and wear of various moving parts, such as the rotor and housing of the hydraulic pump, the piston and cylinder of the hydraulic cylinder, and the valve core and valve hole of the control valve, are key factors affecting the lifespan and operating efficiency of the equipment. Good lubrication is the core guarantee for reducing wear, reducing energy consumption, and preventing overheating and corrosion of parts.

[0003] Chinese Patent No. CN213900667U discloses a hydraulic device with an automatic lubrication structure for parts production. The device includes a base, a rod, and a motor. The base, rod, and motor constitute the main body of the hydraulic push rod. A lubrication mechanism is installed on the top of the rod, comprising an annular plate whose bottom end is fixedly connected to the rod. A first oil tank is sleeved on the outside of the rod, and a connecting plate is installed inside the first oil tank. The surface of the connecting plate has oil passage holes, and a brush is fixedly connected to the side of the connecting plate near the rod. A connecting hole is provided on the top of the first oil tank. This invention features an automatic lubrication structure, which automatically lubricates the inner rod during hydraulic push rod operation. It is simple to operate and convenient for users. Furthermore, the device has a cooling function, improving the motor's heat dissipation efficiency and extending its service life.

[0004] As can be seen from the above structure, the connection between its lubrication pipeline and the equipment body and each lubrication point is mostly a fixed rigid structure, such as welding or multiple sets of fastening bolts. The multi-bolt fastening method requires unscrewing many bolts one by one during disassembly, which consumes a lot of time. During installation, precise alignment and tightening one by one are required, which is very time-consuming. During disassembly and assembly, multiple connecting parts need to be loosened one by one. In addition, some pipelines are blocked by other parts due to space constraints, and the operation requires repeated adjustment of the tool angle, which leads to the problem of not being able to disassemble and assemble quickly. Utility Model Content

[0005] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a lubrication structure for hydraulic equipment to solve the problems mentioned in the background art.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A lubrication structure for a hydraulic device includes a hydraulic device body. An installation assembly is fixedly connected to the outer side of the hydraulic device body. An oiling assembly is fixedly connected to the lower end of the installation assembly. The installation assembly includes a snap-fit ​​block disposed on the outer side of the hydraulic device body. Circular grooves are formed on both sides of the snap-fit ​​block. A snap-fit ​​spring is fixedly connected inside the circular groove. A snap-fit ​​connector is fixedly connected to the other end of the snap-fit ​​spring. A snap-fit ​​frame is fixedly connected to the upper end of the oiling assembly. A snap-fit ​​hole is formed on the inner side of the snap-fit ​​frame. The snap-fit ​​connector and the snap-fit ​​hole snap together.

[0008] As a preferred technical solution, the refueling component includes a frame disposed at the lower end of the snap-fit ​​frame, an oil pump body fixedly connected inside the frame, a storage oil tank disposed at the lower end of the frame, an input oil pipe fixedly connected through the lower end of the oil pump body and extending into the storage oil tank, and an output oil pipe fixedly connected to the other end of the oil pump body, the output oil pipe being fixedly connected to the hydraulic equipment body.

[0009] As a preferred technical solution, the lower end of the frame is threadedly connected to the upper end of the oil storage tank, an external threaded cylinder is fixedly connected to the lower end of the frame, and an internal threaded cylinder is fixedly connected to the upper end of the oil storage tank. The internal threaded cylinder and the external threaded cylinder are threadedly connected to each other.

[0010] As a preferred technical solution, the output oil pipe is threadedly connected to the hydraulic equipment body, the other end of the output oil pipe is fixedly connected to a first threaded cylinder, and the outer side of the hydraulic equipment body is fixedly connected to a second threaded cylinder, with the first threaded cylinder and the second threaded cylinder being threadedly connected to each other.

[0011] As a preferred technical solution, the lower end of the snap-fit ​​frame is fixedly connected to the upper end of the frame, and a fixing through hole is provided inside the upper end of the frame. A fixing screw is inserted into the fixing through hole, and the fixing screw passes through the fixing through hole and is threadedly connected to the snap-fit ​​frame.

[0012] As a preferred technical solution, release springs are fixedly connected to both sides of the snap-fit ​​hole on the outer side of the snap-fit ​​frame, and a pressing plate is fixedly connected to the other end of the release spring. A release block is fixedly connected inside the pressing plate, and the release block is inserted into the snap-fit ​​hole.

[0013] As a preferred technical solution, both sides of the snap-fit ​​block are fixedly connected to mounting edges. The surface of the mounting edge is provided with a hidden groove, and the inside of the hidden groove is provided with a mounting through hole. A mounting screw is inserted into the mounting through hole, and the mounting screw passes through the mounting through hole and is threadedly connected to the hydraulic equipment body.

[0014] In summary, the present invention has the following main advantages:

[0015] Firstly, this utility model, through its installation components, allows the snap-fit ​​block to be inserted into the snap-fit ​​frame. During insertion, the snap-fit ​​connector is squeezed into the circular groove. After the snap-fit ​​block is fully inserted into the snap-fit ​​frame, the position of the snap-fit ​​hole aligns with the position of the circular groove. At this point, the snap-fit ​​connector will pop out of the circular groove under the action of the snap-fit ​​spring, allowing the snap-fit ​​connector to engage with the snap-fit ​​hole, thus achieving the snap-fit ​​effect. This enables the installation of the lubrication component. This structure allows for quick assembly and disassembly without the need for tools, eliminating the tedious operation of traditional bolt tightening or welding connections, significantly shortening installation and maintenance time. The snap-fit ​​structure automatically locks through the spring force, ensuring both the tightness and stability of the connection. When disassembly is required, the snap-fit ​​connector can be easily released by pressing it. The operation is flexible and convenient, effectively improving the maintenance efficiency of the lubrication device and reducing labor costs.

[0016] Secondly, the frame position is fixed by the snap-fit ​​block and the snap-fit ​​frame. The oil pump body inside the frame serves as the power source, and its lower end input oil pipe extends into the storage oil tank to draw lubricant from the tank. When the oil pump body is working, it delivers the lubricant to the hydraulic equipment body through the output oil pipe. The connection between the output oil pipe and the hydraulic equipment body is achieved through the threaded engagement of the first and second threaded cylinders to achieve a tight seal, ensuring that the lubricant is stably delivered to the parts of the equipment that need lubrication. The threaded connection between the output oil pipe and the hydraulic equipment body ensures a tight connection, reducing the risk of lubricant leakage. The storage oil tank can store a certain amount of lubricant, which, together with the oil pump body, enables continuous oil supply without frequent manual addition, thus improving the automation of lubrication. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the installation component of this utility model;

[0019] Figure 3 This is a schematic diagram of the refueling component of this utility model;

[0020] Figure 4 This is a utility model Figure 3 A schematic diagram of the structure viewed from below.

[0021] Reference numerals: 1. Hydraulic equipment body; 2. Mounting assembly; 21. Snap-fit ​​block; 22. Circular groove; 23. Snap-fit ​​spring; 24. Snap-fit ​​connector; 25. Snap-fit ​​frame; 26. Snap-fit ​​hole; 3. Oil filling assembly; 31. Frame; 32. Oil pump body; 33. Output oil pipe; 34. Input oil pipe; 35. Storage oil tank; 4. Mounting edge; 5. Concealed groove; 6. Mounting through hole; 7. Mounting screw; 8. Release spring; 9. Pressing plate; 10. Release block; 11. Internal threaded cylinder; 12. External threaded cylinder; 13. Fixing through hole; 14. Fixing screw; 15. First threaded cylinder; 16. Second threaded cylinder. Detailed Implementation

[0022] Example

[0023] refer to Figures 1 to 4 This embodiment provides a lubrication structure for a hydraulic device, including a hydraulic device body 1. An installation assembly 2 is fixedly connected to the outer side of the hydraulic device body 1. An oiling assembly 3 is fixedly connected to the lower end of the installation assembly 2. The installation assembly 2 includes a snap-fit ​​block 21 disposed on the outer side of the hydraulic device body 1. Circular grooves 22 are formed on both sides of the snap-fit ​​block 21. A snap-fit ​​spring 23 is fixedly connected inside the circular groove 22. A snap-fit ​​connector 24 is fixedly connected to the other end of the snap-fit ​​spring 23. A snap-fit ​​frame 25 is fixedly connected to the upper end of the oiling assembly 3. A snap-fit ​​hole 26 is formed on the inner side of the snap-fit ​​frame 25. A snap-fit ​​connector... 24 is engaged with the snap-fit ​​hole 26. The lower end of the snap-fit ​​frame 25 is fixedly connected to the upper end of the frame 31. The upper end of the frame 31 has a fixed through hole 13. A fixing screw 14 is inserted into the fixed through hole 13. The fixing screw 14 passes through the fixed through hole 13 and is threadedly connected to the snap-fit ​​frame 25. Both sides of the snap-fit ​​block 21 are fixedly connected with mounting edges 4. The surface of the mounting edge 4 has a hidden groove 5. The hidden groove 5 has a mounting through hole 6. A mounting screw 7 is inserted into the mounting through hole 6. The mounting screw 7 passes through the mounting through hole 6 and is threadedly connected to the hydraulic equipment body 1.

[0024] refer to Figure 1 , Figure 3 and Figure 4The refueling component 3 includes a frame 31 located at the lower end of the snap-fit ​​frame 25. An oil pump body 32 is fixedly connected inside the frame 31. A storage oil tank 35 is located at the lower end of the frame 31. An input oil pipe 34 is fixedly connected through the frame 31 and extends into the storage oil tank 35. An output oil pipe 33 is fixedly connected to the other end of the oil pump body 32. The output oil pipe 33 is fixedly connected to the hydraulic equipment body 1. The oil pump body 32 inside the frame 31 serves as a power source. The input oil pipe 34 at its lower end extends into the storage oil tank 35 and can draw lubricant from the oil tank. When the oil pump body 32 is working, it delivers the lubricant to the hydraulic equipment body 1 through the output oil pipe 33. The connection between the output oil pipe 33 and the hydraulic equipment body 1 ensures that the lubricant is stably delivered to the parts of the equipment that need lubrication.

[0025] refer to Figure 4 The lower end of the frame 31 is threadedly connected to the upper end of the storage tank 35. An external threaded cylinder 12 is fixedly connected to the lower end of the frame 31, and an internal threaded cylinder 11 is fixedly connected to the upper end of the storage tank 35. The internal threaded cylinder 11 and the external threaded cylinder 12 are threadedly connected to each other. The external threaded cylinder 12 at the lower end of the frame 31 matches the internal threaded cylinder 11 at the upper end of the storage tank 35. During assembly, by rotating the storage tank 35, the internal threaded cylinder 11 is screwed along the thread track of the external threaded cylinder 12 until the two are tightly connected, thereby fixing the storage tank 35 to the lower end of the frame 31.

[0026] refer to Figure 2 and Figure 3 The output oil pipe 33 is threadedly connected to the hydraulic equipment body 1. The other end of the output oil pipe 33 is fixedly connected to the first threaded cylinder 15, and the outside of the hydraulic equipment body 1 is fixedly connected to the second threaded cylinder 16. The first threaded cylinder 15 and the second threaded cylinder 16 are threadedly connected to each other. The threaded engagement of the first threaded cylinder 15 and the second threaded cylinder 16 achieves a tight seal, ensuring that the lubricant is stably delivered to the parts of the equipment that need lubrication. The threaded connection between the output oil pipe 33 and the hydraulic equipment body 1 ensures the tightness of the connection and reduces the risk of lubricant leakage.

[0027] refer to Figure 3 Release springs 8 are fixedly connected to both sides of the snap-fit ​​frame 25 on both sides of the snap-fit ​​hole 26. A pressing plate 9 is fixedly connected to the other end of the release spring 8. A release block 10 is fixedly connected inside the pressing plate 9. The release block 10 is inserted into the snap-fit ​​hole 26. By pressing the pressing plate 9 inward, the release block 10 moves into the snap-fit ​​hole 26. After the release block 10 enters the snap-fit ​​hole 26, it can squeeze out the snap-fit ​​connector 24. After the snap-fit ​​connector 24 is disengaged from the snap-fit ​​hole 26, the refueling component 3 can be easily disassembled.

[0028] Operating principle and advantages: First, the refueling component 3 is installed to the hydraulic equipment body 1. The snap-fit ​​block 21 is inserted into the snap-fit ​​frame 25. During insertion, the snap-fit ​​connector 24 is squeezed into the circular groove 22. After the snap-fit ​​block 21 is fully inserted into the snap-fit ​​frame 25, the snap-fit ​​hole 26 aligns with the circular groove 22. At this point, the snap-fit ​​connector 24 is ejected from the circular groove 22 under the action of the snap-fit ​​spring 23, allowing it to snap into the snap-fit ​​hole 26, thus achieving the snap-fit ​​effect. This allows the refueling component 3 to be installed. After installation, the refueling component 3 is connected to the hydraulic equipment body 1. Once connected, the structure can be used normally. The oil in the frame 31... The pump body 32 serves as the power source, and its lower end input oil pipe 34 extends into the storage oil tank 35 to draw lubricant from the tank. When the pump body 32 is working, it delivers lubricant to the hydraulic equipment body 1 through the output oil pipe 33. The connection between the output oil pipe 33 and the hydraulic equipment body 1 is achieved through the threaded engagement of the first threaded cylinder 15 and the second threaded cylinder 16 to ensure a tight seal, ensuring that the lubricant is stably delivered to the parts of the equipment that require lubrication. The threaded connection between the output oil pipe 33 and the hydraulic equipment body 1 ensures a tight connection, reducing the risk of lubricant leakage. The storage oil tank 35 can store a certain amount of lubricant, which, together with the pump body 32, enables continuous oil supply without the need for frequent manual replenishment, thus improving the automation of lubrication.

Claims

1. A lubrication structure for a hydraulic device, characterized in that: The device includes a hydraulic equipment body (1), an installation component (2) is fixedly connected to the outside of the hydraulic equipment body (1), an oiling component (3) is fixedly connected to the lower end of the installation component (2), the installation component (2) includes a snap-fit ​​block (21) disposed on the outside of the hydraulic equipment body (1), a circular groove (22) is provided on both sides of the snap-fit ​​block (21), a snap-fit ​​spring (23) is fixedly connected inside the circular groove (22), a snap-fit ​​connector (24) is fixedly connected to the other end of the snap-fit ​​spring (23), a snap-fit ​​frame (25) is fixedly connected to the upper end of the oiling component (3), a snap-fit ​​hole (26) is provided on the inner side of the snap-fit ​​frame (25), and the snap-fit ​​connector (24) and the snap-fit ​​hole (26) snap-fit ​​to each other.

2. The lubrication structure of a hydraulic device according to claim 1, characterized in that: The refueling assembly (3) includes a frame (31) located at the lower end of the snap-fit ​​frame (25). An oil pump body (32) is fixedly connected inside the frame (31). A storage oil tank (35) is provided at the lower end of the frame (31). An input oil pipe (34) is fixedly connected through the frame (31) and extends into the storage oil tank (35). An output oil pipe (33) is fixedly connected to the other end of the oil pump body (32). The output oil pipe (33) is fixedly connected to the hydraulic equipment body (1).

3. The lubrication structure of a hydraulic device according to claim 2, characterized in that: The lower end of the frame (31) is threadedly connected to the upper end of the storage tank (35). An external threaded cylinder (12) is fixedly connected to the lower end of the frame (31), and an internal threaded cylinder (11) is fixedly connected to the upper end of the storage tank (35). The internal threaded cylinder (11) and the external threaded cylinder (12) are threadedly connected to each other.

4. The lubrication structure of a hydraulic device according to claim 3, characterized in that: The output oil pipe (33) is threadedly connected to the hydraulic equipment body (1). The other end of the output oil pipe (33) is fixedly connected to a first threaded cylinder (15). The outside of the hydraulic equipment body (1) is fixedly connected to a second threaded cylinder (16). The first threaded cylinder (15) and the second threaded cylinder (16) are threadedly connected to each other.

5. The lubrication structure of a hydraulic device according to claim 4, characterized in that: The lower end of the snap-fit ​​frame (25) is fixedly connected to the upper end of the frame (31). The upper end of the frame (31) is provided with a fixing through hole (13). A fixing screw (14) is inserted into the fixing through hole (13). The fixing screw (14) passes through the fixing through hole (13) and is threadedly connected to the snap-fit ​​frame (25).

6. The lubrication structure of a hydraulic device according to claim 1, characterized in that: The outer side of the snap-fit ​​frame (25) is fixedly connected to both sides of the snap-fit ​​hole (26) with release springs (8), and the other end of the release spring (8) is fixedly connected to a pressing plate (9). The inside of the pressing plate (9) is fixedly connected to a release block (10), and the release block (10) is inserted into the snap-fit ​​hole (26).

7. The lubrication structure of a hydraulic device according to claim 1, characterized in that: The two sides of the snap-fit ​​block (21) are fixedly connected to the mounting edge (4). The surface of the mounting edge (4) is provided with a hidden groove (5). The inside of the hidden groove (5) is provided with a mounting through hole (6). The mounting through hole (6) is inserted with a mounting screw (7). The mounting screw (7) passes through the mounting through hole (6) and is threaded to the hydraulic equipment body (1).