Shared servo hydraulic system

By designing structures such as sealing rings and filter sleeves in the common servo hydraulic system, the problem of poor sealing at the oil tank filling port was solved, achieving oil sealing protection and filtration, extending oil service life, and reducing maintenance costs.

CN224174339UActive Publication Date: 2026-04-28WUXI HUALI HYDRAULIC TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WUXI HUALI HYDRAULIC TECH CO LTD
Filing Date
2025-06-09
Publication Date
2026-04-28

AI Technical Summary

Technical Problem

The existing common servo hydraulic system has poor sealing at the oil tank filling port, which can easily lead to oil leakage and impurities entering, affecting the use of the device.

Method used

A common servo hydraulic system comprising an oil tank, hydraulic pump, filter, cooler, and sealing ring was designed. The oil inlet is sealed and protected by a rubber plug, knob, and sealing ring, and the oil is filtered by a mounting groove, elastic protective sleeve, and filter sleeve to reduce the entry of impurities and moisture.

Benefits of technology

It effectively prevents oil leakage and oxidation, reduces impurity content, extends oil life, reduces maintenance costs, and improves system stability and reliability.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a sharing type servo hydraulic system which comprises a device body, the device body comprises an oil tank, a hydraulic pump is arranged above the oil tank, an oil filling port and a mounting groove are formed in the oil tank, one end of the hydraulic pump is connected with a first filter, the first filter is connected with a liquid inlet pipe and a connecting pipe, and the liquid inlet pipe is connected with the connecting pipe. One end of the liquid inlet pipe is connected with the second filter, the lower portions of the first filter and the second filter are connected with the liquid pumping pipes, one end of the connecting pipe is connected with the cooler, a rubber plug is arranged in the oil filling opening, the upper portion of the rubber plug is connected with a rotary knob, an elastic protective sleeve is arranged in the mounting groove, and the lower portion of the elastic protective sleeve is connected with the filtering sleeve. Supporting legs are installed below the oil tank, a pressure gauge is installed above the first filter, an oil injection opening can be sealed and protected, the situation that dust enters the oil tank is reduced, water and air are prevented from entering the oil tank, pressure loss caused by oil leakage is prevented, oil oxidation and deterioration are reduced, and the service life of oil is prolonged.
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Description

Technical Field

[0001] This utility model belongs to the technical field of common servo hydraulic systems, and specifically relates to a common servo hydraulic system. Background Technology

[0002] A shared servo hydraulic system is a hydraulic transmission system based on servo control technology. Its core feature is that it uses a single hydraulic power source (such as a hydraulic pump or tank) to power multiple actuators (such as hydraulic cylinders or motors), while simultaneously utilizing servo valves, sensors, and a control system to achieve precise synchronous control of each actuator. This type of system is widely used in scenarios requiring multi-axis collaboration and high-precision motion control, such as industrial automated production lines, aerospace testing equipment, and high-end machine tools.

[0003] In existing shared-use servo hydraulic systems, an oil filling port is usually provided on the oil tank during use. The purpose of the oil filling port is to provide oil to the tank in real time. However, the sealing performance of the existing oil filling port is generally poor, which can easily lead to oil leakage and the entry of impurities into the tank, affecting the subsequent use of the device. Therefore, we need to upgrade and modify the existing technology. Utility Model Content

[0004] The purpose of this invention is to provide a common servo hydraulic system to solve the problems mentioned in the background art.

[0005] To solve the above problems, the following technical solutions are provided:

[0006] Design a common servo hydraulic system, including a device body containing an oil tank. A hydraulic pump is located above the oil tank, and an oil filling port and a mounting groove are provided inside the oil tank. One end of the hydraulic pump is connected to a first filter. An inlet pipe and a connecting pipe are connected to the first filter. One end of the inlet pipe is connected to a second filter. Both the first and second filters are connected to a suction pipe below. One end of the connecting pipe is connected to a cooler. A rubber stopper is provided inside the oil filling port, and a knob is connected above the rubber stopper. An elastic protective sleeve is provided inside the mounting groove, and a filter sleeve is connected below the elastic protective sleeve.

[0007] Furthermore, a support leg is installed below the fuel tank, and two sets of the support legs are symmetrically arranged. The support legs are fixedly connected to the fuel tank.

[0008] Furthermore, handles are fixedly installed on the outer walls at both the front and rear ends of the oil tank, and two sets of handles are symmetrically arranged.

[0009] Furthermore, nameplates are installed on the outer walls of the left and right ends of the fuel tank, and the nameplates are composed of rounded rectangular plates.

[0010] Furthermore, a pressure gauge is installed on top of the filter.

[0011] Furthermore, the front end of the cooler is equipped with heat dissipation fins, and multiple sets of heat dissipation fins are provided.

[0012] Furthermore, a sealing ring is connected above the rubber stopper, and a knob is provided above the sealing ring. The sealing ring is fixedly disposed at the connection between the rubber stopper and the knob.

[0013] Furthermore, both the elastic protective sleeve and the filter sleeve are provided with insertion holes, and a liquid extraction tube is inserted into the insertion holes.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model, by setting up an oil inlet, rubber stopper, knob and sealing ring, can seal and protect the oil inlet, reduce the entry of dust into the oil tank, block the entry of moisture and air, prevent oil leakage and pressure loss, reduce oil oxidation and deterioration, and extend the service life of the oil.

[0016] 2. This utility model, by setting an installation groove, an elastic protective sleeve, a plug-in hole and a filter sleeve, can filter the oil being extracted, reduce the impurity content in the oil, avoid mechanical wear, restore the oil's performance, extend its service life, reduce maintenance costs and reduce downtime losses.

[0017] Specific embodiments of the present invention are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of the present invention can be employed. It should be understood that the embodiments of the present invention are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present invention include many changes, modifications, and equivalents. Attached Figure Description

[0018] 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:

[0019] Figure 1 This is a perspective view of the overall structure of a common type servo hydraulic system according to this utility model;

[0020] Figure 2 This is a perspective view of the hydraulic system structure of a common type servo hydraulic system according to this utility model;

[0021] Figure 3 This is a perspective view of the oil tank structure of a common type servo hydraulic system according to this utility model;

[0022] Figure 4 This is an exploded view of the protective structure of a common type servo hydraulic system according to this utility model;

[0023] Figure 5 This is an exploded view of the filter structure of a common type servo hydraulic system according to this utility model.

[0024] In the diagram: 1. Device body; 2. Oil tank; 3. Support leg; 4. Handle; 5. Nameplate; 6. Hydraulic pump; 7. Filter 1; 8. Inlet pipe; 9. Pressure gauge; 10. Filter 2; 11. Connecting pipe; 12. Heat dissipation fins; 13. Cooler; 14. Suction pipe;

[0025] 15. Oil inlet; 16. Rubber stopper; 17. Knob; 18. Sealing ring; 19. Mounting groove;

[0026] 20. Elastic protective sleeve; 21. Insertion hole; 22. Filter sleeve. Detailed Implementation

[0027] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0028] like Figure 1 As shown in Figure 5, this embodiment provides a common servo hydraulic system, including a device body 1, an oil tank 2, a hydraulic pump 6 above the oil tank 2, and an oil filling port 15 and a mounting groove 19 inside the oil tank 2. One end of the hydraulic pump 6 is connected to a filter 7, an inlet pipe 8 and a connecting pipe 11 are connected to the filter 7, one end of the inlet pipe 8 is connected to a filter 10, and both the filter 7 and the filter 10 are connected to a suction pipe 14 below. One end of the connecting pipe 11 is connected to a cooler 13. A rubber stopper 16 is provided inside the oil filling port 15, a knob 17 is connected above the rubber stopper 16, an elastic protective sleeve 20 is provided inside the mounting groove 19, and a filter sleeve 22 is connected below the elastic protective sleeve 20.

[0029] Preferably, support legs 3 are installed below the fuel tank 2. Two sets of support legs 3 are symmetrically arranged. The support legs 3 are fixedly connected to the fuel tank 2. By setting the support legs 3, the stability of the fuel tank 2 is increased, ensuring the safety of the fuel tank 2 during use and preventing the fuel tank 2 from contacting the ground during use. Handles 4 are fixedly installed on the outer walls of both the front and rear ends of the fuel tank 2. Two sets of handles 4 are symmetrically arranged. By setting the handles 4, it is convenient for users to move the fuel tank 2, improving the flexibility of the device and increasing its practicality and convenience. Nameplates 5 are installed on the outer walls of the left and right ends of the fuel tank 2. The nameplates 5 are composed of rounded rectangular plates. By setting the nameplates 5, it is convenient for users to understand and know the basic information of the device.

[0030] Preferably, a pressure gauge 9 is installed above the filter 7. By setting the pressure gauge 9, the internal pressure of the filter 7 can be monitored in real time, providing convenience for users and facilitating subsequent maintenance of the device. A heat dissipation fin 12 is installed at the front end of the cooler 13. Multiple sets of heat dissipation fins 12 are set to dissipate the heat generated by the device during operation, preventing heat accumulation that could affect the subsequent operation of the device. A sealing ring 18 is connected above the rubber stopper 16, and a knob 17 is located above the sealing ring 18. The sealing ring 18 is fixedly located at the connection between the rubber stopper 16 and the knob 17. By setting the sealing ring 18, the safety and sealing performance of the device are increased, preventing oil leakage in the oil tank 2. Insertion holes 21 are opened in both the elastic protective sleeve 20 and the filter sleeve 22. A liquid extraction tube 14 is inserted into the insertion hole 21, increasing the connection and intimacy between the devices and facilitating user control and use of the device.

[0031] The working principle and process of this utility model are as follows: In use, the rubber stopper 16 is connected to the sealing ring 18 with strong glue, and then the sealing ring 18 is connected to the knob 17 with glue. After completion, the user inserts the rubber stopper 16 into the oil inlet 15 through the knob 17 until the sealing ring 18 and the oil inlet 15 are tightly sealed. Otherwise, it can be removed. This can seal and protect the oil inlet 15, reduce the entry of dust into the oil tank 2, block the entry of moisture and air, prevent oil leakage and pressure loss, reduce oil oxidation and deterioration, and extend the service life of the oil. When it is necessary to filter the oil entering the device, the user connects the filter sleeve 22 to the elastic protective sleeve 20, and then installs the filter sleeve 22 with the elastic protective sleeve 20 in the mounting groove 19. When the liquid extraction pipe 14 extracts oil, it also extracts the oil that has entered the filter sleeve 22, which can filter the oil used, reduce the impurity content in the oil, avoid mechanical wear, restore the performance of the oil, extend the service life, reduce maintenance costs, and reduce downtime losses.

[0032] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] The present invention has been described above with reference to specific embodiments. However, those skilled in the art should understand that these descriptions are exemplary and not intended to limit the scope of protection of the present invention. Those skilled in the art can make various modifications and variations to the present invention based on its spirit and principles, and these modifications and variations are also within the scope of the present invention.

Claims

1. A common type servo hydraulic system, characterized in that, The device includes a main body (1), which contains an oil tank (2). A hydraulic pump (6) is provided above the oil tank (2), and an oil inlet (15) and a mounting groove (19) are provided inside the oil tank (2). One end of the hydraulic pump (6) is connected to a first filter (7). An inlet pipe (8) and a connecting pipe (11) are connected to the first filter (7). One end of the inlet pipe (8) is connected to a second filter (10). A suction pipe (14) is connected below both the first filter (7) and the second filter (10). One end of the connecting pipe (11) is connected to a cooler (13). A rubber stopper (16) is provided inside the oil inlet (15). A knob (17) is connected above the rubber stopper (16). An elastic protective sleeve (20) is provided inside the mounting groove (19). A filter sleeve (22) is connected below the elastic protective sleeve (20).

2. The common servo hydraulic system according to claim 1, characterized in that, The oil tank (2) is equipped with a support leg (3) below it. Two sets of support legs (3) are symmetrically arranged and the support legs (3) are fixedly connected to the oil tank (2).

3. The common servo hydraulic system according to claim 1, characterized in that, The oil tank (2) is fixedly provided with handles (4) on the outer walls at both ends, and two sets of handles (4) are provided symmetrically.

4. The common servo hydraulic system according to claim 1, characterized in that, Nameplates (5) are installed on the outer walls of the left and right ends of the oil tank (2). The nameplates (5) are composed of rounded rectangular plates.

5. A common type servo hydraulic system according to claim 1, characterized in that, A pressure gauge (9) is installed above the filter (7).

6. A common type servo hydraulic system according to claim 1, characterized in that, The front end of the cooler (13) is equipped with heat dissipation fins (12), and the heat dissipation fins (12) are provided in multiple sets.

7. A common type servo hydraulic system according to claim 1, characterized in that, A sealing ring (18) is connected above the rubber stopper (16), and a knob (17) is provided above the sealing ring (18). The sealing ring (18) is fixedly set at the connection between the rubber stopper (16) and the knob (17).

8. A common type servo hydraulic system according to claim 1, characterized in that, Both the elastic protective sleeve (20) and the filter sleeve (22) are provided with insertion holes (21), and a liquid extraction tube (14) is inserted into the insertion holes (21).