Valve rod positioning device of hydraulic valve

Abstract

The utility model relates to the technical field of mechanical engineering, and provides a valve rod positioning device of a hydraulic valve, which comprises a hydraulic cylinder and a plurality of stand columns, the outer surface of the hydraulic cylinder is fixedly sleeved with a first supporting block, the bottom of the hydraulic cylinder is provided with a telescopic rod, the outer surface of the telescopic rod is fixedly connected with a connecting rod, and the connecting rod is fixedly connected with the stand columns. The side, away from the telescopic rod, of the connecting rod is fixedly connected with a toothed plate, the outer surface of the toothed plate is movably sleeved with a fixing plate, the outer surface of the toothed plate is in meshed connection with a first gear, the inner surface of the first gear is movably sleeved with a positioning rod, and the outer surface of the first supporting block is fixedly connected with a first supporting plate. Abnormal movement of the valve rod is avoided, precision of pressure and flow is improved, fluctuation and deviation of the flow and the pressure are avoided, stability and precision of a system are guaranteed, meanwhile, the situation that when the hydraulic valve stops working, the system associated with the hydraulic valve cannot be put into use is avoided, and normal operation of equipment is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical engineering technical field especially relates to a valve rod positioner of hydraulic valve. BACKGROUND

[0002] The valve rod positioner is to ensure the accurate operation of the valve in the hydraulic system, improve the stability, efficiency and reliability of the system.

[0003] Although the present technology has many advantages, the present technology has the disadvantage that some hydraulic valves lack valve rod positioners, which may not achieve high-precision control requirements when adjusting flow and pressure, and cannot accurately control the opening of the valve, which may cause fluctuations or deviations in fluid flow and pressure, affecting the stability and accuracy of the system. When the hydraulic valve fails, the hydraulic valve will stop working, and the system associated with the hydraulic valve cannot be put into use, affecting the normal operation of the equipment and delaying production. UTILITY MODEL CONTENTS

[0004] The utility model discloses a valve rod positioner of hydraulic valve, which solves the problem of lack of valve rod positioner in some hydraulic valves in the prior art, which may not achieve high-precision control requirements when adjusting flow and pressure, and cannot accurately control the opening of the valve, which may cause fluctuations or deviations in fluid flow and pressure, affecting the stability and accuracy of the system. When the hydraulic valve fails, the hydraulic valve will stop working, and the system associated with the hydraulic valve cannot be put into use, affecting the normal operation of the equipment and delaying production.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a valve rod positioner of hydraulic valve, comprising a hydraulic cylinder, further comprising: a plurality of columns, a support block one is fixedly sleeved on the outer surface of the hydraulic cylinder, a telescopic rod is arranged at the bottom of the hydraulic cylinder, a connecting rod is fixedly connected to the outer surface of the telescopic rod, a tooth plate is fixedly connected to the side away from the telescopic rod of the connecting rod, a fixed plate is movably sleeved on the outer surface of the tooth plate, a gear one is movably connected to the outer surface of the tooth plate, a positioning rod is movably sleeved on the inner surface of the gear one, a support plate one is fixedly connected to the outer surface of the support block one, a motor one is fixedly connected to the top of the support plate one, and a rotating shaft one is arranged on the output shaft of the motor one, which avoids abnormal movement of the valve rod, improves the accuracy of pressure and flow, and avoids fluctuations and deviations in flow and pressure.

[0006] As a preferred embodiment, the outer surface of the telescopic rod is threadedly connected with a gear two, the outer surface of the gear two is movably connected with a gear three, and the inner surface of the gear three is fixedly connected with a rotating shaft two, which avoids the situation that when the hydraulic valve stops working, the system associated with the hydraulic valve cannot be put into use.

[0007] As a preferred implementation form, the outer surface of the rotating shaft one is fixedly installed with a limiting plate, and the outer surface of the limiting plate is fixedly connected with a spring.

[0008] As a preferred implementation form, the top of the supporting block one is fixedly connected with a fixed plate, and the bottom of the supporting block one is fixedly connected with a plurality of columns, and the fixed plate can position the tooth plate.

[0009] As a preferred implementation form, the outer surface of the tooth plate is fixedly connected with a pointer, and the outer surface of the supporting block one is fixedly connected with a positioning rod, and the pointer can indicate the opening value on the fixed plate with the movement of the tooth plate.

[0010] As a preferred implementation form, the top of the rotating shaft two is fixedly installed with a motor two, and the top of the motor two is fixedly connected with a supporting plate two, and the supporting plate two can fix the motor two.

[0011] As a preferred implementation form, the inner surface of the supporting block one is movably embedded with the rotating shaft one, and the top of the supporting block one is fixedly connected with the spring, and the rotating shaft one can transmit the power of the motor one to the limiting plate.

[0012] As a preferred implementation form, the outer surface of the supporting plate two is fixedly connected with a supporting block two, and the bottom of the supporting block two is fixedly connected with a plurality of columns, and the supporting plate two can position the motor two.

[0013] Compared with the prior art, the utility model has the advantages and positive effects that:

[0014] 1、the utility model discloses, when using, the motor one is driven rotating shaft one rotation through the output shaft, and rotating shaft one drives the limiting plate rotation, makes the limiting plate no longer card in the outer surface of gear one, and the limiting plate will stretch the spring, and the spring obtains greater elastic potential energy, then stops the motor one and starts the hydraulic cylinder, and the hydraulic cylinder makes the telescopic rod telescopic, and the telescopic rod moves the tooth plate through the connecting rod, and the tooth plate drives gear one to make the circumferential movement with the positioning rod as the center, when the opening of hydraulic valve satisfies the process demand, starts the motor one, and the motor one makes the limiting plate re -card on gear one, and makes gear one no longer rotate, and then position the tooth plate, thereby the opening of the hydraulic valve keeps constant, and the spring releases the elastic potential energy even if the limiting plate rotates back to the initial position, and makes the limiting plate card on gear one, and position the tooth plate, and also position the telescopic rod, and the fixed plate can position the tooth plate, and the pointer can indicate the opening indicating digit on the fixed plate, and the opening of the hydraulic valve is digitized, avoids the abnormal movement of the valve rod, improves the precision of pressure and flow, and does not appear the fluctuation and deviation of flow and pressure, guarantees the stability and precision of the system.

[0015] 2. In this utility model, when the hydraulic cylinder fails, the second motor is started. The second motor drives the second rotating shaft to rotate through the output shaft. The second rotating shaft drives the second gear to rotate through the third gear. Because the second gear is threadedly connected to the telescopic rod, the telescopic rod will reciprocate up and down when the second gear rotates. The second support block can support the second support plate, and the column can position the second support block. This avoids the system associated with the hydraulic valve from being unable to be put into use when the hydraulic valve stops working, thus ensuring the normal operation of the equipment. Attached Figure Description

[0016] Figure 1 A schematic diagram of the main structure of a valve stem positioning device for a hydraulic valve provided by this utility model;

[0017] Figure 2 A schematic diagram of the column position structure of a valve stem positioning device for a hydraulic valve provided by this utility model;

[0018] Figure 3 This utility model provides a valve stem positioning device for a hydraulic valve. Figure 1 Enlarged structural diagram at point A;

[0019] Figure 4 This utility model provides a valve stem positioning device for a hydraulic valve. Figure 2 A magnified structural diagram at point B in the middle.

[0020] Legend:

[0021] 1. Hydraulic cylinder; 2. Support block one; 3. Telescopic rod; 4. Connecting rod; 5. Gear plate; 6. Fixing plate; 7. Pointer; 8. Gear one; 9. Positioning rod; 10. Support plate one; 11. Motor one; 12. Rotating shaft one; 13. Limiting plate; 14. Spring; 15. Gear two; 16. Gear three; 17. Rotating shaft two; 18. Motor two; 19. Support plate two; 20. Support block two; 21. Column. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-4The utility model provides a technical scheme: a valve rod positioning device of hydraulic valve, it includes: hydraulic cylinder 1, still include: a plurality of stand 21, the outer surface of hydraulic cylinder 1 is fixedly provided with support block one 2, the bottom of hydraulic cylinder 1 is provided with telescopic link 3, the outer surface of telescopic link 3 is fixedly connected with connecting rod 4, the side away from telescopic link 3 of connecting rod 4 is fixedly connected with the toothed plate 5, the outer surface of toothed plate 5 is movably provided with fixed plate 6, the outer surface of toothed plate 5 is engagedly connected with gear one 8, the inner surface of gear one 8 is movably provided with positioning rod 9, the outer surface of support block one 2 is fixedly connected with support plate one 10, the top of support plate one 10 is fixedly connected with motor one 11, motor one 11 is provided with the shaft one 12 through output shaft, avoids the abnormal movement of valve rod, improves the precision of pressure and flow, will not appear the fluctuation and deviation of flow and pressure, guarantees the stability and precision of system.

[0024] As Figures 1-4 Shown, the outer surface of telescopic link 3 is threadedly connected with gear two 15, the outer surface of gear two 15 is engagedly connected with gear three 16, the inner surface of gear three 16 is fixedly installed with the shaft two 17, avoids the system associated with hydraulic valve when hydraulic valve stops working, guarantees the normal operation of equipment.

[0025] As Figures 1-4 Shown, the outer surface of the shaft one 12 is fixedly installed with the limit stop 13, the outer surface of limit stop 13 is fixedly connected with spring 14, spring 14 can make limit stop 13 always be clamped on the outer surface of gear one 8 when motor one 11 does not work, and the gear one 8 is positioned.

[0026] As Figures 1-4 Shown, fixed plate 6 is fixedly connected at the top of support block one 2, a plurality of stand 21 are fixedly connected at the bottom of support block one 2, and fixed plate 6 can position toothed plate 5, to provide good working environment for toothed plate 5.

[0027] As Figures 1-4 Shown, the outer surface of toothed plate 5 is fixedly connected with pointer 7, and positioning rod 9 is fixedly connected to the outer surface of support block one 2, pointer 7 can indicate the opening value on fixed plate 6 along with the movement of toothed plate 5, to facilitate operation.

[0028] As Figures 1-4 Shown, the top of the shaft two 17 is fixedly installed with motor two 18, and the top of motor two 18 is fixedly connected with support plate two 19, and support plate two 19 can fix motor two 18, to provide good working environment for motor two 18.

[0029] As Figures 1-4As shown, the rotating shaft 12 is movably embedded in the inner surface of the support block 2, and the spring 14 is fixedly connected to the top of the support block 2. The rotating shaft 12 can transmit the power of the motor 11 to the limiting plate 13, so that the limiting plate 13 rotates.

[0030] like Figures 1-4 As shown, a support block 20 is fixedly connected to the outer surface of the support plate 2 19. The support block 20 is fixedly connected to the bottom of multiple columns 21. The support plate 2 19 can position the motor 2 18 and provide a good working environment for the motor 2 18.

[0031] Working Principle: This device is a valve stem positioning device for hydraulic valves. During use, the motor 11 on the support plate 10 is turned on. Motor 11 model: DC-RS775-4548, power: 22.39W. Starting the motor 11 causes the output shaft to drive the rotating shaft 12 to rotate. The rotating shaft 12 then drives the limiting plate 13 to rotate, preventing the limiting plate 13 from being stuck on the outer surface of the gear 8. The limiting plate 13 also stretches the spring 14, giving it greater elastic potential energy. Then, the motor 11 is stopped, and the power to the hydraulic cylinder 1 on the support block 2 is turned on. Hydraulic cylinder 1, model ZG40 / 30-62-QR, power: 94W. Starting hydraulic cylinder 1 causes the telescopic rod 3 to extend and retract. The telescopic rod 3, through connecting rod 4, drives the gear plate 5 to move. The gear plate 5 drives gear 8 to perform a circular motion around the positioning rod 9. When the hydraulic valve opening meets the process requirements, motor 11 is started, causing it to rotate in the opposite direction. Motor 11 causes the limit plate 13 to re-lock onto gear 8, preventing gear 8 from rotating and thus positioning gear 5. This maintains the hydraulic valve opening unchanged. Spring 14 prevents the limit plate 13 from rotating back to its initial position. At the initial position, it also releases elastic potential energy, causing the limiting plate 13 to lock onto gear 8, positioning gear 8, which in turn positions the toothed plate 5, and thus positions the telescopic rod 3. The fixing plate 6 can limit the toothed plate 5, and the pointer 7 can indicate the opening degree indicator number on the fixing plate 6, making the hydraulic valve opening degree digital, avoiding abnormal movement of the valve stem, improving the accuracy of pressure and flow, and preventing fluctuations and deviations in flow and pressure, thus ensuring the stability and accuracy of the system. When hydraulic cylinder 1 fails, the power supply to motor 18 on support plate 19 is connected, and motor 18... Model: DC-RS775-6522, Power: 168W, Starter motor 18, Motor 18 drives shaft 17 to rotate via output shaft, Shaft 17 drives gear 15 to rotate via gear 16. Because gear 15 is threadedly connected to telescopic rod 3, the rotation of gear 15 causes telescopic rod 3 to reciprocate up and down. Support block 20 can support support plate 19, and column 21 can position support block 20, preventing the hydraulic valve from being unable to be used when the hydraulic valve stops working, thus ensuring the normal operation of the equipment.

[0032] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application without departing from the technical scheme of the present application still falls within the protection scope of the present application.

Claims

1. A valve stem positioning device for a hydraulic valve, characterized by, Include: Hydraulic cylinder (1) further comprises: a plurality of column (21), the outer surface of the hydraulic cylinder (1) is fixedly sleeved with support block one (2), the bottom of the hydraulic cylinder (1) is provided with telescopic rod (3), the outer surface of the telescopic rod (3) is fixedly connected with connecting rod (4), the side, away from the telescopic rod (3) of the connecting rod (4) is fixedly connected with the toothed plate (5), the outer surface of the toothed plate (5) is movably sleeved with fixed plate (6), the outer surface of the toothed plate (5) is engagedly connected with gear one (8), the inner surface of the gear one (8) is movably sleeved with positioning rod (9), the outer surface of the support block one (2) is fixedly connected with support plate one (10), the top of the support plate one (10) is fixedly connected with motor one (11), the motor one (11) is provided with rotating shaft one (12) through output shaft.

2. A hydraulic valve stem positioning device as defined in claim 1, wherein: The outer surface of the telescopic rod (3) is threadedly connected with gear two (15), the outer surface of the gear two (15) is engagedly connected with gear three (16), the inner surface of the gear three (16) is fixedly installed with rotating shaft two (17).

3. A hydraulic valve stem positioning device as defined in claim 1 wherein: The outer surface of the rotating shaft one (12) is fixedly installed with limiting plate (13), the outer surface of the limiting plate (13) is fixedly connected with spring (14).

4. A hydraulic valve stem positioning device as defined in claim 1 wherein: The fixed plate (6) is fixedly connected at the top of the support block one (2), and a plurality of the column (21) is fixedly connected at the bottom of the support block one (2).

5. A hydraulic valve stem positioning device as defined in claim 1 wherein: The outer surface of the toothed plate (5) is fixedly connected with pointer (7), and the positioning rod (9) is fixedly connected to the outer surface of the support block one (2).

6. A hydraulic valve stem positioning device as defined in claim 2 wherein: The top of the rotating shaft two (17) is fixedly installed with motor two (18), and the top of the motor two (18) is fixedly connected with support plate two (19).

7. A hydraulic valve stem positioning device as defined in claim 3 wherein: The rotating shaft one (12) is movably embedded in the inner surface of the support block one (2), and the spring (14) is fixedly connected to the top of the support block one (2).

8. A hydraulic valve stem positioning device as defined in claim 6 wherein: The outer surface of the support plate two (19) is fixedly connected with support block two (20), and the support block two (20) is fixedly connected to the bottom of a plurality of the column (21).

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