Hydraulic double-pump control valve adjusting mechanism
By using a hydraulic dual-pump control valve adjustment mechanism, and with the cooperation of an electromagnet and a shift fork, the adjustment structure of the variable displacement piston pump has been optimized, solving the problem of jamming in the adjustment mechanism in the prior art, and realizing stable operation and precise variable adjustment of the piston pump.
Patent Information
- Application Number
- CN202423276630.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-12-30
AI Technical Summary
The existing variable displacement piston pump's regulating mechanism is stuck, resulting in unstable operation and poor variable displacement accuracy.
The hydraulic dual-pump control valve adjustment mechanism uses an electromagnet to push the valve core and guide rod to move, and in combination with the cooperation of the shift fork and spring, the oil port can be opened and closed. The adjustment component and sealing nut are used for sealing connection, thus optimizing the adjustment structure.
This achieves smooth adjustment of the plunger pump during the control valve regulation process, improving the stability of the working state and the accuracy of variable parameters.
Smart Images
Figure CN223498315U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hydraulic piston pump technology, and in particular to a hydraulic dual-pump control valve adjustment mechanism. Background Technology
[0002] The hydraulic dual-pump control valve is a crucial component in a hydraulic system. It coordinates and controls the operating states of two hydraulic pumps, ensuring greater stability of the entire hydraulic system. Among existing hydraulic transmission systems, the piston pump is one of the most widely used hydraulic power components. It relies on the reciprocating motion of a piston to change the volume within the piston cylinder for fluid intake and discharge; it is a type of positive displacement hydraulic pump. The piston pump converts mechanical energy (torque and speed) into hydraulic energy (flow rate and pressure). Piston pumps are generally classified into fixed-displacement piston pumps and variable-displacement piston pumps. While existing variable-displacement piston pumps offer fast response times, their complex pump control valve structure and tendency to jam can lead to unstable operation and poor variable-displacement accuracy. Therefore, we propose a hydraulic dual-pump control valve adjustment mechanism. Utility Model Content
[0003] The main objective of this invention is to provide a hydraulic dual-pump control valve adjustment mechanism, which can effectively solve the problems in the background art.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0005] A hydraulic dual-pump control valve adjustment mechanism includes a valve body. An electromagnet mounting plate is installed on the left end of the valve body. An O-ring is provided at the connection between the valve body and the electromagnet mounting plate. An electromagnet is connected to the left end of the electromagnet mounting plate. A valve sleeve and a valve core are provided in the left part of the valve body. The valve core is located in the middle of the valve sleeve. Oil port P, oil port A, and oil port T are provided in the valve body. A guide rod is connected to the right end of the valve core. A guide sleeve and a large spring are sleeved on the left part of the outer surface of the guide rod. A small spring is sleeved on the right part of the outer surface of the guide rod. An adjustment component is sleeved on the right part of the small spring. A shift fork is movably connected to the guide sleeve. The shift fork is movably installed between the valve body and the shaft pin.
[0006] Preferably, the adjusting assembly includes an adjusting screw, a sealing nut, and a third stop ring. The adjusting screw and the third stop ring are an integral structure, and the adjusting screw is fixedly connected to the valve body through the sealing nut.
[0007] Preferably, the right side of the guide rod is provided with a first stop ring and a second stop ring, and the first stop ring and the second stop ring are integral with the guide rod.
[0008] Preferably, the large spring is located between the guide sleeve and the first stop ring, and the diameter of the large spring is smaller than the diameter of the guide sleeve and the diameter of the first stop ring.
[0009] Preferably, the small spring is located between the second and third gear rings, and the diameter of the small spring is smaller than the diameter of the second and third gear rings.
[0010] Preferably, the centers of the guide rod and the adjusting assembly are located on the same horizontal line.
[0011] Compared with the prior art, the present invention has the following beneficial effects:
[0012] This invention utilizes an electromagnet to provide thrust to the valve core, which, in conjunction with a shift fork, drives the guide sleeve and guide rod to move. The valve core moves left and right, connecting or closing oil ports P, A, and T to adjust the displacement setting. The adjustment assembly uses a sealing nut to seal the adjusting screw to the valve body, and can adjust the position of the third stop ring within the valve body, making the position of the small spring easy to adjust. This improves the original control valve's variable displacement structure, enabling the plunger pump to achieve smooth adjustment during control valve adjustment. An O-ring is provided between the electromagnet mounting plate and the valve body, strengthening the overall connection and sealing of the control valve. The optimized adjustment structure ensures stable operation of the plunger pump and improves variable displacement accuracy. Attached Figure Description
[0013] Figure 1 This is a cross-sectional view of a hydraulic dual-pump control valve adjustment mechanism according to the present invention;
[0014] Figure 2 This is a schematic diagram of the connection of the adjusting components of a hydraulic dual-pump control valve adjusting mechanism according to this utility model;
[0015] Figure 3 This is a schematic diagram of the guide rod connection structure of a hydraulic dual-pump control valve adjustment mechanism according to this utility model.
[0016] In the diagram: 1. Electromagnet; 2. Electromagnet mounting plate; 3. O-ring; 4. Valve sleeve; 5. Valve core; 6. Valve body; 7. Guide sleeve; 8. Guide rod; 9. Large spring; 10. Small spring; 11. Adjusting assembly; 12. Shaft pin; 13. Shift fork; 14. Oil port P; 15. Oil port A; 16. Oil port T; 81. First position ring; 82. Second position ring; 110. Adjusting screw; 111. Sealing nut; 112. Third position ring. Detailed Implementation
[0017] 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.
[0018] 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. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" 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 based on the specific circumstances.
[0020] Please see Figures 1-3 This utility model provides a technical solution:
[0021] A hydraulic dual-pump control valve adjustment mechanism includes a valve body 6, characterized in that: an electromagnet mounting plate 2 is installed on the left end of the valve body 6, an O-ring 3 is provided at the connection between the valve body 6 and the electromagnet mounting plate 2, an electromagnet 1 is connected to the left end of the electromagnet mounting plate 2, a valve sleeve 4 and a valve core 5 are provided in the left part of the valve body 6, the valve core 5 is located in the middle of the valve sleeve 4, an oil port P14, an oil port A15 and an oil port T16 are provided in the valve body 6, a guide rod 8 is connected to the right end of the valve core 5, a guide sleeve 7 and a large spring 9 are sleeved on the left part of the outer surface of the guide rod 8, a small spring 10 is sleeved on the right part of the outer surface of the guide rod 8, an adjustment component 11 is sleeved on the right part of the small spring 10, and a shift fork 13 is movably connected to the guide sleeve 7, the shift fork 13 is movably installed between the valve body 6 and the shaft pin 12.
[0022] The adjusting assembly 11 includes an adjusting screw 110, a sealing nut 111, and a third stop ring 112. The adjusting screw 110 and the third stop ring 112 are integral structures, and the adjusting screw 110 is fixedly connected to the valve body 6 through the sealing nut 111. A first stop ring 81 and a second stop ring 82 are provided on the right side of the guide rod 8. The first stop ring 81 and the second stop ring 82 are integral structures with the guide rod 8. A large spring 9 is located between the guide sleeve 7 and the first stop ring 81. The diameter of the large spring 9 is smaller than the diameter of the guide sleeve 7 and the diameter of the first stop ring 81. A small spring 10 is located between the second stop ring 82 and the third stop ring 112. The diameter of the small spring 10 is smaller than the diameter of the second stop ring 82 and the diameter of the third stop ring 112. The centers of the guide rod 8 and the adjusting assembly 11 are located on the same horizontal line.
[0023] It should be noted that this utility model is a hydraulic dual-pump control valve adjustment mechanism. Electromagnet 1 pushes valve core 5, causing guide rod 8 to move. The oil passages between oil port P14 and oil port A15 are disconnected, and oil port A15 and oil port T16 gradually become connected, increasing the displacement. The shift fork 13 moves to the right, causing guide sleeve 7 to move to the right. The large spring 9 compresses, causing guide rod 8 to move to the right, which in turn moves valve core 5 to the right. The gradual disconnection between oil port A15 and oil port T16 completes the displacement increase adjustment. When the force of electromagnet 1 on valve core 5 decreases, guide rod 8 moves valve core 5 to the left, and the oil... As port P14 and port A15 gradually become connected, the displacement decreases. The shift fork 13 drives the guide sleeve 7 and guide rod 8 to move to the left. The valve core 5 is driven to move to the left by the guide rod 8 and guide sleeve. As port P14 and port A15 gradually become disconnected, the displacement decreases. The sealing nut 111 on the adjusting assembly 11 seals the adjusting screw 110 to the valve body 6 and can adjust the position of the third position ring 112 inside the valve body 6, making the position of the small spring 10 easy to adjust. This improves the original control valve variable adjustment structure and enables the plunger pump to achieve smooth adjustment during the control valve adjustment process.
[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A hydraulic dual-pump control valve regulating mechanism, comprising a valve body (6), characterized in that: An electromagnet mounting plate (2) is installed on the left end of the valve body (6). An O-ring (3) is provided at the connection between the valve body (6) and the electromagnet mounting plate (2). An electromagnet (1) is connected to the left end of the electromagnet mounting plate (2). A valve sleeve (4) and a valve core (5) are provided on the left side of the valve body (6). The valve core (5) is located in the middle of the valve sleeve (4). An oil port P (14), an oil port A (15), and an oil port are provided inside the valve body (6). T(16), the right end of the valve core (5) is connected to a guide rod (8), the left side of the outer surface of the guide rod (8) is fitted with a guide sleeve (7) and a large spring (9), the right side of the outer surface of the guide rod (8) is fitted with a small spring (10), the right side of the small spring (10) is fitted with an adjusting component (11), the guide sleeve (7) is movably connected with a fork (13), and the fork (13) is movably installed between the valve body (6) and the shaft pin (12); The adjustment assembly (11) includes an adjustment screw (110), a sealing nut (111), and a third stop ring (112). The adjustment screw (110) and the third stop ring (112) are an integral structure. The adjustment screw (110) is fixedly connected to the valve body (6) through the sealing nut (111).
2. The hydraulic dual-pump control valve adjustment mechanism according to claim 1, characterized in that: The right side of the guide rod (8) is provided with a first stop ring (81) and a second stop ring (82), and the first stop ring (81) and the second stop ring (82) are integral with the guide rod (8).
3. The hydraulic dual-pump control valve adjustment mechanism according to claim 1, characterized in that: The large spring (9) is located between the guide sleeve (7) and the first stop ring (81), and the diameter of the large spring (9) is smaller than the diameter of the guide sleeve (7) and the diameter of the first stop ring (81).
4. The hydraulic dual-pump control valve adjusting mechanism according to claim 1, characterized in that, The small spring (10) is located between the second gear ring (82) and the third gear ring (112), and the diameter of the small spring (10) is smaller than the diameter of the second gear ring (82) and the diameter of the third gear ring (112).
5. The hydraulic dual-pump control valve adjustment mechanism according to claim 1, characterized in that, The centers of the guide rod (8) and the adjustment assembly (11) are located on the same horizontal line.