High-precision servo valve transmission mechanism

Abstract

The invention belongs to the technical field of transmission mechanisms, and particularly relates to a high-precision servo valve transmission mechanism which comprises a supporting and connecting assembly. The power input module is arranged on the supporting and connecting assembly, and the power input module is used for providing power input; the valve is arranged on the supporting and connecting assembly; the power transmission module is arranged on the supporting and connecting assembly and located between the power input module and the valve, and the power transmission module is used for transmitting power of the power input module to the valve so as to control the valve to be opened or closed; the motion direction of the power transmission module comprises rotary motion on the horizontal plane and up-down motion on the vertical plane, and the power transmission module converts the rotary motion of the power input module into up-down motion to achieve opening or closing of the valve. The structural size of the transmission mechanism can be reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of transmission mechanisms, and in particular relates to a high-precision servo valve transmission mechanism. Background Art

[0002] Traditional manual needle valves are primarily used for continuous and fine-grained adjustment of gas flow. During intelligent transformation, they need to be integrated with servo motors for remote, digital control. When adjusting the needle valve's opening, the valve stem moves up and down, necessitating a floating mechanism to compensate for the stem's movement. Existing technologies often achieve this by directly connecting the valve stem and motor shaft with a coupling, with the motor mounted on a guide rail. The primary drawback is that the addition of the guide rail and slider significantly increases the radial dimension of the structure relative to the motor, significantly limiting its applicability in compact spaces.

[0003] Therefore, it is necessary to design a high-precision servo valve transmission mechanism to solve the above problems. Summary of the Invention

[0004] The object of the present invention is to provide a high-precision servo valve transmission mechanism to solve the above-mentioned problems and achieve the purpose of reducing the volume of the transmission connection structure.

[0005] To achieve the above-mentioned objectives, the present invention provides the following solution: a high-precision servo valve transmission mechanism, comprising: a support and connection assembly; a power input module, arranged on the support and connection assembly, the power input module being used to provide power input; a valve, arranged on the support and connection assembly; a power transmission module, arranged on the support and connection assembly, the power transmission module being located between the power input module and the valve, the power transmission module being used to transmit the power of the power input module to the valve to control the opening or closing of the valve; the movement direction of the power transmission module includes rotational movement in the horizontal plane and up and down movement in the vertical plane, and the power transmission module realizes the opening or closing of the valve by converting the rotational movement of the power input module into up and down movement.

[0006] A high-precision servo valve transmission mechanism based on the present invention, the power transmission module includes a shell, a cavity is opened inside the shell, a center hole is opened at the top of the shell, the center hole is connected to the cavity, a plurality of needle rollers are fixedly arranged in the cavity, a plurality of the needle rollers are located at the edge of the cavity, and a plurality of the needle rollers are arranged at equal intervals along the circumference of the cavity, a cycloid wheel is also arranged inside the cavity, the cycloid wheel is coaxially fixedly connected to the power input module, the cycloid wheel is movably matched with the plurality of the needle rollers, a rotating shaft is fixedly connected to the bottom end of the outer wall of the shell, the rotating shaft is coaxially fixedly connected to the valve, the rotating shaft is coaxially arranged with the shell, and the cycloid wheel is eccentrically arranged with the shell and the rotating shaft.

[0007] According to a high-precision servo valve transmission mechanism of the present invention, a plurality of arcuate grooves are provided on the side wall of the trochoid wheel. The arcuate grooves are arranged at equal intervals along the circumference of the trochoid wheel side wall, and the arcuate grooves are adapted to the needle roller wheel.

[0008] According to a high-precision servo valve transmission mechanism of the present invention, the valve is detachably connected to the support connection assembly via a fixing nut, the valve is threadedly connected to a knob screw, and the knob screw is coaxially fixedly connected to the rotating shaft.

[0009] According to the high-precision servo valve transmission mechanism of the present invention, the knob screw is coaxially fixedly connected to the rotating shaft through a coupling.

[0010] According to a high-precision servo valve transmission mechanism of the present invention, the power input module includes a servo motor, the servo motor is fixedly connected to the support connection assembly, and the output shaft of the servo motor is coaxially fixedly connected to the trochoid wheel.

[0011] Based on a high-precision servo valve transmission mechanism of the present invention, the supporting and connecting assembly includes a vertical plate, and one side wall of the vertical plate is fixedly connected to an upper plate, a bottom plate, and a middle plate. The upper plate is spaced apart from the middle plate and is located above the middle plate, and the bottom plate is spaced apart from the middle plate and is located below the middle plate. The power input module is fixedly connected to the upper plate, the rotating shaft is rotatably and slidingly connected to the middle plate, and the valve is fixedly connected to the bottom plate.

[0012] According to the high-precision servo valve transmission mechanism of the present invention, the rotating shaft is rotatably and slidingly connected to the middle plate through a guide bearing.

[0013] Compared with existing technologies, the present invention offers the following advantages and technical effects: By securing the valve and power input module to the same supporting connection assembly and utilizing a power transmission module to provide a floating connection between the valve and the power input module, the present invention minimizes the radial dimensions of the power input module. This ensures a compact transmission mechanism while ensuring high-precision transmission, resulting in a smoother transmission process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 It is an overall schematic diagram of the present invention.

[0016] Figure 2 Schematic diagram of the power transmission module of the present invention.

[0017] Figure 3 Schematic diagram of the trochoid wheel and the needle roller wheel of the present invention.

[0018] Figure 4 Schematic diagram of the valve of the present invention.

[0019] Among them, 1. Vertical plate; 2. Upper plate; 3. Bottom plate; 4. Middle plate; 5. Servo motor; 6. Housing; 7. Rotating shaft; 8. Guide bearing; 9. Coupling; 10. Valve; 11. Fixing nut; 12. Knob screw; 13. Cycloid wheel; 14. Needle roller; 15. Arc groove. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Reference Figures 1 to 4 As shown, the present invention provides a high-precision servo valve transmission mechanism, including: a support and connection assembly; a power input module, which is arranged on the support and connection assembly, and is used to provide power input; a valve 10, which is arranged on the support and connection assembly; a power transmission module, which is arranged on the support and connection assembly, and is located between the power input module and the valve 10, and is used to transmit the power of the power input module to the valve 10 to control the opening or closing of the valve 10; the movement direction of the power transmission module includes rotational movement in the horizontal plane and up and down movement in the vertical plane, and the power transmission module realizes the opening or closing of the valve 10 by converting the rotational movement of the power input module into up and down movement.

[0023] By fixing the valve and power input module to the same supporting connection assembly and using the power transmission module to provide a floating connection between the valve and the power input module, the radial structural dimensions of the power input module are minimized. This ensures a compact transmission structure while ensuring high-precision transmission and a smoother transmission process.

[0024] Furthermore, the power transmission module includes a shell 6, a cavity is opened inside the shell 6, a center hole is opened at the top of the shell 6, the center hole is connected to the cavity, a number of needle rollers 14 are fixedly arranged in the cavity, the number of needle rollers 14 are located at the edge of the cavity, and the number of needle rollers 14 are arranged at equal intervals along the circumference of the cavity. A cycloid wheel 13 is also arranged inside the cavity, the cycloid wheel 13 is coaxially fixedly connected to the power input module, and the cycloid wheel 13 is movably matched with the number of needle rollers 14. A rotating shaft 7 is fixedly connected to the bottom end of the outer wall of the shell 6, the rotating shaft 7 is coaxially fixedly connected to the valve 10, the rotating shaft 7 is coaxially arranged with the shell 6, and the cycloid wheel 13 is eccentrically arranged with the shell 6 and the rotating shaft 7.

[0025] When the power input module drives the cycloid wheel 13 to rotate, it further drives the housing 6 to rotate through the needle roller 14, thereby driving the knob screw 12 to rotate through the rotating shaft 7. During the rotation of the knob screw 12, it in turn drives the housing 6, the rotating shaft 7, and the needle roller 14 to float up and down, realizing the floating connection function of the power transmission module.

[0026] Furthermore, a plurality of arcuate grooves 15 are formed on the side wall of the trochoid wheel 13 . The arcuate grooves 15 are arranged at equal intervals along the circumference of the side wall of the trochoid wheel 13 . The arcuate grooves 15 are matched with the needle roller wheel 14 .

[0027] The trochoid wheel 13 and the outer needle wheel 14 can also form a reduction device through the gear ratio, and the power can be transmitted more smoothly through the reduction device.

[0028] Furthermore, the valve 10 is detachably connected to the supporting connection assembly via a fixing nut 11 , and the valve 10 is threadedly connected to a knob screw 12 , which is coaxially fixedly connected to the rotating shaft 7 .

[0029] When the knob screw 12 rotates relative to the valve 10, it can move up and down at the same time.

[0030] Furthermore, the knob screw 12 is coaxially fixedly connected to the rotating shaft 7 through the coupling 9.

[0031] Furthermore, the power input module includes a servo motor 5 , the servo motor 5 is fixedly connected to the support connection assembly, and the output shaft of the servo motor 5 is coaxially fixedly connected to the trochoid wheel 13 .

[0032] When the servo motor 5 rotates the trochoid wheel 13, it further rotates the housing 6 via the needle roller 14, which in turn rotates the knob screw 12 via the rotating shaft 7 and coupling 9. The rotation of the knob screw 12 in turn causes the housing 6, rotating shaft 7, coupling 9, and needle roller 14 to float up and down, achieving the floating connection function of the power transmission module. As the needle roller 14 floats up and down, it slides in contact with the trochoid wheel 13.

[0033] Furthermore, the supporting connection assembly includes a vertical plate 1, and one side wall of the vertical plate 1 is fixedly connected to an upper plate 2, a bottom plate 3, and a middle plate 4. The upper plate 2 and the middle plate 4 are spaced apart and located above the middle plate 4, and the bottom plate 3 and the middle plate 4 are spaced apart and located below the middle plate 4. The power input module is fixedly connected to the upper plate 2, the rotating shaft 7 is rotatably and slidingly connected to the middle plate 4, and the valve 10 is fixedly connected to the bottom plate 3.

[0034] Furthermore, the rotating shaft 7 is rotatably and slidingly connected to the middle plate 4 through a guide bearing 8 .

[0035] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the scope of protection of the present invention.

Claims

1. A high-precision servo valve transmission mechanism, characterized in that: include: Support connection components; A power input module is provided on the supporting connection assembly, and is used to provide power input; A valve (10) is provided on the supporting connection assembly; A power transmission module is provided on the supporting connection assembly, the power transmission module is located between the power input module and the valve (10), and the power transmission module is used to transmit the power of the power input module to the valve (10) to control the opening or closing of the valve (10); the movement direction of the power transmission module includes rotational movement in the horizontal plane and up and down movement in the vertical plane, and the power transmission module realizes the opening or closing of the valve (10) by converting the rotational movement of the power input module into up and down movement.

2. A high-precision servo valve transmission mechanism according to claim 1, characterized in that: The power transmission module includes a shell (6), a cavity is provided inside the shell (6), a center hole is provided at the top of the shell (6), and the center hole is communicated with the cavity. A plurality of needle rollers (14) are fixedly arranged in the cavity, and the plurality of needle rollers (14) are located at the edge of the cavity. The plurality of needle rollers (14) are arranged at equal intervals along the circumference of the cavity. A cycloid wheel (13) is also provided inside the cavity, and the cycloid wheel (13) is coaxially fixedly connected to the power input module, and the cycloid wheel (13) is movably matched with the plurality of needle rollers (14). A rotating shaft (7) is fixedly connected to the bottom end of the outer wall of the shell (6), and the rotating shaft (7) is coaxially fixedly connected to the valve (10). The rotating shaft (7) is coaxially arranged with the shell (6), and the cycloid wheel (13) is eccentrically arranged with the shell (6) and the rotating shaft (7).

3. A high-precision servo valve transmission mechanism according to claim 2, characterized in that: The side wall of the cycloid wheel (13) is provided with a plurality of arcuate grooves (15), which are arranged at equal intervals along the circumference of the side wall of the cycloid wheel (13), and the arcuate grooves (15) are adapted to the needle roller wheel (14).

4. A high-precision servo valve transmission mechanism according to claim 2, characterized in that: The valve (10) is detachably connected to the supporting connection assembly via a fixing nut (11), and the valve (10) is threadedly connected to a knob screw (12), which is coaxially fixedly connected to the rotating shaft (7).

5. The high-precision servo valve transmission mechanism according to claim 4, characterized in that: The knob screw (12) is coaxially fixedly connected to the rotating shaft (7) via a coupling (9).

6. The high-precision servo valve transmission mechanism according to claim 2, characterized in that: The power input module comprises a servo motor (5), the servo motor (5) is fixedly connected to the support connection assembly, and the output shaft of the servo motor (5) is coaxially fixedly connected to the trochoid wheel (13).

7. The high-precision servo valve transmission mechanism according to claim 2, characterized in that: The supporting connection assembly includes a vertical plate (1), a side wall of the vertical plate (1) is fixedly connected to an upper plate (2), a bottom plate (3), and a middle plate (4), the upper plate (2) and the middle plate (4) are spaced apart and located above the middle plate (4), the bottom plate (3) and the middle plate (4) are spaced apart and located below the middle plate (4), the power input module is fixedly connected to the upper plate (2), the rotating shaft (7) is rotatably and slidingly connected to the middle plate (4), and the valve (10) is fixedly connected to the bottom plate (3).

8. The high-precision servo valve transmission mechanism according to claim 7, characterized in that: The rotating shaft (7) is connected to the middle plate (4) in a rotational and sliding manner via a guide bearing (8).

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