Pilot control handle valve group for high-pressure oil cylinder

Abstract

The pilot control handle valve group for the high-pressure oil cylinder comprises a valve body, a first pressure adjusting bolt, a second pressure adjusting bolt and a third pressure adjusting bolt are connected to the valve body in a threaded mode, the density of threads on the first pressure adjusting bolt, the density of threads on the second pressure adjusting bolt and the density of threads on the third pressure adjusting bolt are sequentially increased, and a through groove is formed in the valve body. A first blocking block, a second blocking block and a third blocking block are slidably connected into the through groove, the axis of the first blocking block, the axis of the second blocking block and the axis of the third blocking block are overlapped with the axis of the first pressure adjusting bolt, the axis of the second pressure adjusting bolt and the axis of the third pressure adjusting bolt correspondingly, and the top ends of the first pressure adjusting bolt, the second pressure adjusting bolt and the third pressure adjusting bolt are fixedly connected with hand wheels correspondingly. By means of the structure, the oil pressure in the high-pressure oil cylinder can be adjusted more conveniently and quickly, the situation that the service life of the high-pressure oil cylinder is shortened due to the fact that the same pressure adjusting bolt is frequently rotated is avoided, meanwhile, the oil pressure can be finely adjusted according to needs, and precision is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of a pilot control handle valve group for a high-pressure oil cylinder, in particular to a pilot control handle valve group for a high-pressure oil cylinder. Background Art

[0002] The existing pilot control handle valve group for high-pressure oil cylinders is often provided with a single pressure-regulating bolt to adjust the oil pressure and oil flow rate in the oil circuit. However, when in use, the oil pressure in the oil circuit cannot be quickly adjusted as needed. The pressure-regulating bolt needs to be turned quickly, which may cause fatigue during adjustment. At the same time, all adjustments rely on the same pressure-regulating bolt, which may reduce its service life. In addition, when a single pressure-regulating bolt is used for adjustment, the adjustment accuracy is low. For example, a Chinese patent discloses "a pilot-operated overflow valve" with an application number of "CN201921236103.2", which includes a main valve and a pilot valve; the main valve is fixedly connected to the pilot valve, and the main valve includes a main valve body, a main spring, a main valve core, a main valve seat, and an oil inlet; the main valve body is provided with a main valve hole, the A main spring, a main valve core and a main valve seat are arranged in the main valve hole; a plurality of oil inlets are arranged below the main valve body; the pilot valve comprises a pilot valve body, an adjusting handle, a push rod, a pilot spring, a push pin and a pilot valve seat; an insertion hole is arranged near the push pin on the pilot valve seat; a damping hole is arranged below the pilot valve port on the pilot valve body, and the damping hole connects the main valve hole and the pilot valve hole. The above structure is convenient for use and can be remotely controlled. However, when in use, the oil pressure in the oil circuit cannot be quickly adjusted as needed, and the pressure regulating bolt needs to be turned quickly, which may cause fatigue during adjustment. At the same time, all adjustments rely on the same pressure regulating bolt, which may reduce its service life. In addition, when adjusting a single pressure regulating bolt, the adjustment accuracy is low, and there are limitations during use. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art and provides a pilot control handle valve group for a high-pressure oil cylinder. By providing a pressure regulating bolt 1, a pressure regulating bolt 2 and a pressure regulating bolt 3 with increasing thread density in sequence and cooperating with a through groove, a first blocking block, a second blocking block and a third blocking block, the oil pressure in the high-pressure oil cylinder can be adjusted more conveniently and quickly to avoid frequent rotation of the same pressure regulating bolt, which reduces its service life. At the same time, the oil pressure can be finely adjusted as needed with higher precision.

[0004] The utility model also provides a pilot control handle valve group for a high-pressure oil cylinder as mentioned above, comprising: a valve body, on which pressure regulating bolt 1, pressure regulating bolt 2 and pressure regulating bolt 3 are threadedly connected, the thread density of the pressure regulating bolt 1, pressure regulating bolt 2 and pressure regulating bolt 3 increases in sequence, a through groove is provided in the valve body, a first blocking block, a second blocking block and a third blocking block are slidably connected in the through groove, the axes of the first blocking block, the second blocking block and the third blocking block overlap with the axes of the pressure regulating bolt 1, pressure regulating bolt 2 and pressure regulating bolt 3 respectively, the top ends of the pressure regulating bolt 1, pressure regulating bolt 2 and pressure regulating bolt 3 are fixedly connected with a hand wheel, and an anti-slip strip is provided on the hand wheel. Through the above structure, the oil pressure in the high-pressure oil cylinder can be adjusted more conveniently and quickly, and frequent rotation of the same pressure regulating bolt is avoided to reduce its service life. At the same time, the oil pressure can be finely adjusted as needed with higher precision.

[0005] According to the pilot control handle valve group for a high-pressure oil cylinder described in the utility model, a first movable groove is arranged in the valve body, a first adjusting rod is arranged in the first movable groove, an end of the first adjusting rod away from the pressure regulating bolt is fixedly connected to a first fixing column, an end of the first fixing column away from the first adjusting rod is fixedly connected to the side surface of the first blocking block, and through the above structure, the oil pressure and oil flow rate in the through groove can be adjusted.

[0006] According to the pilot control handle valve group for a high-pressure oil cylinder described in the utility model, a first spring is arranged in the first movable groove, and the first spring is located on the side surface of the first fixed column. Through the above structure, it is convenient to bounce up the first adjusting rod.

[0007] According to the pilot control handle valve group for a high-pressure oil cylinder described in the utility model, a second movable groove is provided in the valve body, a second adjusting rod is provided in the second movable groove, the second adjusting rod is fixedly connected to a second fixing column at one end away from the pressure regulating bolt 2, and the second fixing column is fixedly connected to a side surface of the second blocking block at one end away from the second adjusting rod. Through the above structure, the oil pressure and oil flow rate in the through groove can be adjusted.

[0008] According to the pilot control handle valve group for a high-pressure oil cylinder described in the utility model, a second spring is arranged in the second movable groove, and the second spring is located on the side surface of the second fixed column. Through the above structure, it is convenient to bounce up the second adjusting rod.

[0009] According to the pilot control handle valve group for a high-pressure oil cylinder described in the utility model, a third movable groove is arranged in the valve body, a third adjusting rod is arranged in the third movable groove, an end of the third adjusting rod away from the pressure regulating bolt three is fixedly connected to a third fixing column, an end of the third fixing column away from the third adjusting rod is fixedly connected to the side surface of the third blocking block, and through the above structure, the oil pressure and oil flow rate in the through groove can be adjusted.

[0010] According to the pilot control handle valve group for a high-pressure oil cylinder described in the utility model, a third spring is arranged in the third movable groove, and the third spring is located on the side surface of the third fixed column. Through the above structure, it is convenient to bounce up the third adjusting rod.

[0011] According to the pilot control handle valve group for a high-pressure oil cylinder described in the utility model, a first movable groove is arranged in the valve body, a first connecting rod is arranged in the first movable groove, the first connecting rod is fixedly connected to the side surface of the first adjusting rod, and the other end of the first connecting rod is fixedly connected to the side surface of the second adjusting rod. Through the above structure, when coarse adjustment is required, the first adjusting rod can drive the second adjusting rod to retreat when retreating, so as to quickly make the through groove in an unobstructed state.

[0012] According to the pilot control handle valve group for a high-pressure oil cylinder described in the utility model, a second movable groove is arranged in the valve body, a second connecting rod is arranged in the second movable groove, the second connecting rod is fixedly connected to the side surface of the second adjusting rod, and the other end of the second connecting rod is fixedly connected to the side surface of the third adjusting rod. Through the above structure, when coarse adjustment is required, the second adjusting rod can drive the third adjusting rod to retreat when retreating, so as to quickly make the through groove in an unobstructed state.

[0013] According to the pilot control handle valve group for a high-pressure oil cylinder described in the utility model, the oil outlet and the oil inlet are connected to the through groove, and the above structure facilitates the oil to pass through.

[0014] Beneficial Effects

[0015] 1. Compared with the prior art, the pilot control handle valve group for the high-pressure oil cylinder is provided with pressure regulating bolts 1, 2 and 3 with increasing thread density, and cooperates with the through groove, the first blocking block, the second blocking block and the third blocking block. It can adjust the oil pressure in the high-pressure oil cylinder more conveniently and quickly, avoid frequent rotation of the same pressure regulating bolt, which reduces its service life, and at the same time, the oil pressure can be finely adjusted as needed with higher precision.

[0016] 2. Compared with the prior art, this pilot control handle valve group for a high-pressure oil cylinder is provided with a first movable groove, a first connecting rod, a second movable groove, and a second connecting rod. When the oil pressure is too high or the flow rate of the oil in the oil circuit needs to be greatly adjusted, the oil pressure or flow rate in the oil circuit can be quickly adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0018] Figure 1 This is the overall structure diagram of a pilot control handle valve group for a high-pressure oil cylinder of the utility model;

[0019] Figure 2 This is a rear view structural diagram of a pilot control handle valve group for a high-pressure oil cylinder of the utility model;

[0020] Figure 3 This is a transverse cross-sectional structural diagram of a pilot control handle valve group for a high-pressure oil cylinder of the utility model;

[0021] Figure 4 The utility model is a longitudinal sectional structural diagram of a pilot control handle valve group for a high-pressure oil cylinder.

[0022] Legend:

[0023] 1. Valve body; 2. Pressure regulating bolt 1; 3. Pressure regulating bolt 2; 4. Pressure regulating bolt 3; 5. Hand wheel; 6. Anti-slip strip; 7. Oil inlet; 8. Through groove; 9. First adjusting rod; 10. First spring; 11. First fixed column; 12. First movable groove; 13. First blocking block; 14. First connecting rod; 15. First movable groove; 16. Second blocking block; 17. Second fixed column; 18. Second spring; 19. Second movable groove; 20. Second adjusting rod; 21. Second movable groove; 22. Third blocking block; 23. Third fixed column; 24. Third spring; 25. Second connecting rod; 26. Third adjusting rod; 27. Third movable groove; 28. Oil outlet. DETAILED DESCRIPTION

[0024] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0025] Reference Figure 1-4The utility model embodiment is a pilot control handle valve group for a high-pressure oil cylinder, which includes: a valve body 1, a pressure regulating bolt 1 2, a pressure regulating bolt 2 3, and a pressure regulating bolt 3 4 are threadedly connected to the valve body 1, which is convenient for the pressure regulating bolt 1 2, the pressure regulating bolt 2 3, and the pressure regulating bolt 3 4 to rotate, and the thread density on the pressure regulating bolt 1 2, the pressure regulating bolt 2 3, and the pressure regulating bolt 3 4 increases in sequence, which is convenient for coarse adjustment, fine adjustment, and micro adjustment of the oil pressure and the flow rate of the oil in the through groove 8. A through groove 8 is provided in the valve body 1 to facilitate the passage of oil, and a through groove 8 is slidably connected to the through groove 8. The first blocking block 13, the second blocking block 16, and the third blocking block 22 block the oil. The axes of the first blocking block 13, the second blocking block 16, and the third blocking block 22 overlap with the axes of the pressure regulating bolt 2, the pressure regulating bolt 3, and the pressure regulating bolt 4, respectively, for easy adjustment. The top ends of the pressure regulating bolt 2, the pressure regulating bolt 3, and the pressure regulating bolt 4 are fixedly connected with a hand wheel 5 for easy rotation of the pressure regulating bolt 2, the pressure regulating bolt 3, and the pressure regulating bolt 4. An anti-slip strip 6 is provided on the hand wheel 5 to prevent slipping when the hand wheel 5 is rotated.

[0026] A first movable groove 12 is provided in the valve body 1, and a first adjusting rod 9 is provided in the first movable groove 12 to facilitate the movement of the first adjusting rod 9. The end of the first adjusting rod 9 away from the pressure-adjusting bolt 2 is fixedly connected to the first fixing column 11 to fix the first fixing column 11. The end of the first fixing column 11 away from the first adjusting rod 9 is fixedly connected to the side surface of the first blocking block 13 to facilitate the movement of the first blocking block 13. A first spring 10 is provided in the first movable groove 12. The first spring 10 is located on the side surface of the first fixing column 11 to facilitate the first adjusting rod 9 to bounce up. A second movable groove 19 is provided in the valve body 1, and a second adjusting rod 20 is provided in the second movable groove 19 to facilitate the movement of the second adjusting rod 20. The end of the second adjusting rod 20 away from the pressure-adjusting bolt 3 is fixedly connected to the second fixing column 17 to fix the second fixing column 17. The second fixing column 17, one end away from the second adjusting rod 20 is fixedly connected to the side surface of the second blocking block 16, driving the second blocking block 16 to move, a second spring 18 is arranged in the second movable groove 19, and the second spring 18 is located on the side surface of the second fixed column 17 to facilitate the second adjusting rod 20 to pop up, a third movable groove 27 is arranged in the valve body 1, and a third adjusting rod 26 is arranged in the third movable groove 27 to facilitate the movement of the third adjusting rod 26, and one end of the third adjusting rod 26 away from the pressure regulating bolt three 4 is fixedly connected to the third fixed column 23 to fix the third fixed column 23, and one end of the third fixed column 23 away from the third adjusting rod 26 is fixedly connected to the side surface of the third blocking block 22, driving the third blocking block 22 to move, and a third spring 24 is arranged in the third movable groove 27, and the third spring 24 is located on the side surface of the third fixed column 23 to facilitate the third adjusting rod 26 to pop up.

[0027] A first movable groove 15 is provided in the valve body 1, and a first connecting rod 14 is provided in the first movable groove 15 to facilitate the movement of the first connecting rod 14. The first connecting rod 14 is fixedly connected to the side surface of the first adjusting rod 9, the first connecting rod 14 is fixed, and the other end of the first connecting rod 14 is fixedly connected to the side surface of the second adjusting rod 20, driving the second adjusting rod 20 to retreat. A second movable groove 21 is provided in the valve body 1, and a second connecting rod 25 is provided in the second movable groove 21 to facilitate the movement of the second connecting rod 25. The second connecting rod 25 is fixedly connected to the side surface of the second adjusting rod 20, the second connecting rod 25 is fixed, and the other end of the second connecting rod 25 is fixedly connected to the side surface of the third adjusting rod 26, which is convenient for driving the third adjusting rod 26 to retreat. The oil outlet 28 is connected to the oil inlet 7 and the through groove 8 to facilitate the passage of oil.

[0028] Working principle: When in use, according to the need to adjust the flow rate or oil pressure of the oil in the through groove 8, since the thread density on the pressure regulating bolt 2, the pressure regulating bolt 2, the pressure regulating bolt 3, and the pressure regulating bolt 3 4 is inconsistent, and the thread density increases gradually, adjustment can be made by rotating one of the pressure regulating bolt 2, the pressure regulating bolt 2, the pressure regulating bolt 3, and the pressure regulating bolt 3 4. When rapid adjustment is required, the first adjusting rod 9 is retreated by rotating the pressure regulating bolt 2, driving the first blocking block 13 to retreat, and at the same time, the second blocking block 16 and the third blocking block 22 can be retreated through the first connecting rod 14 and the second connecting rod 25, so that rapid adjustment can be made.

[0029] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A pilot control handle valve group for a high-pressure oil cylinder, characterized in that: include: A valve body (1), wherein the valve body (1) is threadedly connected with a pressure regulating bolt 1 (2), a pressure regulating bolt 2 (3), and a pressure regulating bolt 3 (4), wherein the thread density of the pressure regulating bolt 1 (2), the pressure regulating bolt 2 (3), and the pressure regulating bolt 3 (4) increases in sequence, wherein a through groove (8) is provided in the valve body (1), wherein a first blocking block (13), a second blocking block (16), and a third blocking block (22) are slidably connected in the through groove (8), wherein the axes of the first blocking block (13), the second blocking block (16), and the third blocking block (22) overlap with the axes of the pressure regulating bolt 1 (2), the pressure regulating bolt 2 (3), and the pressure regulating bolt 3 (4), respectively, and the top ends of the pressure regulating bolt 1 (2), the pressure regulating bolt 2 (3), and the pressure regulating bolt 3 (4) are fixedly connected with a hand wheel (5), and an anti-slip strip (6) is provided on the hand wheel (5).

2. A pilot control handle valve group for a high-pressure oil cylinder according to claim 1, characterized in that: A first movable groove (12) is provided in the valve body (1), a first adjusting rod (9) is provided in the first movable groove (12), one end of the first adjusting rod (9) away from the pressure regulating bolt (2) is fixedly connected to a first fixing column (11), and one end of the first fixing column (11) away from the first adjusting rod (9) is fixedly connected to a side surface of a first blocking block (13).

3. A pilot control handle valve group for a high-pressure oil cylinder according to claim 2, characterized in that: A first spring (10) is arranged in the first movable groove (12), and the first spring (10) is located on the side surface of the first fixed column (11).

4. A pilot control handle valve group for a high-pressure oil cylinder according to claim 1, characterized in that: A second movable groove (19) is provided in the valve body (1), a second adjusting rod (20) is provided in the second movable groove (19), one end of the second adjusting rod (20) away from the second pressure regulating bolt (3) is fixedly connected to a second fixing column (17), and one end of the second fixing column (17) away from the second adjusting rod (20) is fixedly connected to the side surface of the second blocking block (16).

5. A pilot control handle valve group for a high-pressure oil cylinder according to claim 4, characterized in that: A second spring (18) is arranged in the second movable groove (19), and the second spring (18) is located on the side surface of the second fixed column (17).

6. A pilot control handle valve group for a high-pressure oil cylinder according to claim 1, characterized in that: A third movable groove (27) is provided in the valve body (1), a third adjusting rod (26) is provided in the third movable groove (27), one end of the third adjusting rod (26) away from the pressure regulating bolt three (4) is fixedly connected to a third fixing column (23), and one end of the third fixing column (23) away from the third adjusting rod (26) is fixedly connected to the side surface of the third blocking block (22).

7. A pilot control handle valve group for a high-pressure oil cylinder according to claim 6, characterized in that: A third spring (24) is arranged in the third movable groove (27), and the third spring (24) is located on the side surface of the third fixed column (23).

8. The pilot control handle valve group for a high-pressure oil cylinder according to claim 1, characterized in that: A first movable groove (15) is provided in the valve body (1), a first connecting rod (14) is provided in the first movable groove (15), the first connecting rod (14) is fixedly connected to the side surface of the first adjusting rod (9), and the other end of the first connecting rod (14) is fixedly connected to the side surface of the second adjusting rod (20).

9. A pilot control handle valve group for a high-pressure oil cylinder according to claim 1, characterized in that: A second movable groove (21) is provided in the valve body (1), a second connecting rod (25) is provided in the second movable groove (21), the second connecting rod (25) is fixedly connected to the side surface of the second adjusting rod (20), and the other end of the second connecting rod (25) is fixedly connected to the side surface of the third adjusting rod (26).

10. A pilot control handle valve group for a high-pressure oil cylinder according to claim 1, characterized in that: The valve body (1) is provided with an oil outlet (28) and an oil inlet (7), and the oil outlet (28) and the oil inlet (7) are connected to the through groove (8).

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