Angle-recognizable two-dimensional electromagnetic directional valve element zeroing device

Abstract

The invention relates to the technical field of valve element zeroing tools, in particular to an angle-recognizable 2D electromagnetic directional valve element zeroing device which comprises an oil supply base, a containing cavity used for installing a valve body is formed in the oil supply base, a positioning support is arranged on the upper portion of the oil supply base, and a valve element zeroing rod is arranged on the positioning support. The angle detection module is arranged above the valve element zeroing rod, the angle adjusting assembly is arranged on the lower portion of the valve element zeroing rod, the rotating angle of the valve element zeroing rod can be detected and then displayed in real time through the design of the angle detection module, compared with a traditional valve element zeroing tool, the rotating angle of a valve element can be observed in the debugging process, and the valve element zeroing efficiency and accuracy are improved.

Description

Technical Field

[0001] The invention relates to the technical field of valve core zeroing tooling, and in particular to a 2D electromagnetic reversing valve valve core zeroing device capable of identifying angles. Background Art

[0002] The angle-recognizable 2D electromagnetic reversing valve spool zeroing device is mainly used in the new generation of 2D electromagnetic reversing valves with magnetic suspension structure, and is used for the process of adjusting the spool zero position of the 2D electromagnetic reversing valve. During the operation of the 2D electromagnetic reversing valve, the spool has rotation and axial movement. Specifically, the high-pressure hole and low-pressure hole opened on the spool sensitive cavity and the straight groove on the valve body form a hydraulic resistance half-bridge. At this time, the pressure of the sensitive cavity is half of the system pressure, and the balance cavity at the other end of the spool is the system pressure and the pressure action area is half of the sensitive cavity. At this time, the spool is balanced axially under the action of liquid pressure. When the spool rotates, the opening amount of the high-pressure hole and the low-pressure hole on the spool of the sensitive cavity changes, so that the pressure of the sensitive cavity is no longer half of the system pressure. At this time, the spool moves axially to realize the reversing function of the electromagnetic valve. The spool end of the new generation of 2D electromagnetic reversing valves with magnetic suspension structure is located inside the valve body, and there is always high-pressure oil at the end of the spool. The rotation angle of the spool cannot be observed during the spool zeroing process, and the zeroing is inaccurate and the zeroing efficiency is very low. Summary of the invention

[0003] In order to solve the above problems, an embodiment of the present invention provides a 2D electromagnetic reversing valve valve core zeroing device that can recognize angles, which solves the problems in the background technology that the rotation angle of the valve core cannot be observed during the valve core zeroing process, the zeroing is inaccurate, and the zeroing efficiency is very low.

[0004] In order to achieve the above-mentioned purpose, the embodiment of the present invention specifically adopts the following technical scheme: a 2D electromagnetic reversing valve valve core zeroing device that can recognize an angle, comprising an oil supply base, the oil supply base is provided with a storage chamber for installing the valve body, the upper part of the oil supply base is provided with a positioning bracket, the positioning bracket is provided with a valve core zeroing rod, the upper part of the valve core zeroing rod is provided with an angle detection module, and the lower part is provided with an angle adjustment component.

[0005] As a further improvement of the above technical solution:

[0006] The angle detection module comprises a dial, an angle detector is arranged above the dial, a magnet is arranged below the dial, and a gap is reserved between the magnet and the dial.

[0007] A mounting seat for mounting a magnetic steel is arranged on the upper part of the valve core zero adjustment rod. The magnetic steel is installed with an interference fit on the mounting seat. A steel wire retaining ring for the shaft is arranged below the mounting seat.

[0008] The positioning bracket comprises a cross brace, a thrust ball bearing for mounting a valve core zero adjustment rod is arranged in the middle of the cross brace, and supporting feet are arranged at both ends of the cross brace, and the supporting feet are detachably connected to the oil supply base by bolts.

[0009] The thrust ball bearing, the storage chamber and the valve core zero adjustment rod are coaxially distributed.

[0010] The angle adjustment assembly includes a connecting portion and a transmission portion. The lower end of the connecting portion extends into the valve body and is connected to the valve core. The transmission portion is provided with a rotating handle.

[0011] The side wall of the connecting portion is provided with a sealing groove, and a sealing ring located in the low-pressure chamber of the valve body is provided in the sealing groove.

[0012] The connecting portion is a prism structure.

[0013] A positioning block for mounting a rotating handle is arranged on the outer side wall of the transmission part.

[0014] The oil supply base is provided with a high-pressure oil passage and a low-pressure oil passage which are communicated with the storage chamber, and the lower part of the oil supply base is provided with an oil drain hole which is communicated with the storage chamber.

[0015] The beneficial effects of the present invention are as follows: the angle-recognizable 2D electromagnetic reversing valve spool zeroing device comprises an oil supply base, a storage chamber for mounting a valve body is provided on the oil supply base, a positioning bracket is provided on the upper part of the oil supply base, a spool zeroing rod is provided on the positioning bracket, an angle detection module is provided above the spool zeroing rod, and an angle adjustment component is provided at the lower part. The design of the angle detection module can detect the rotation angle of the spool zeroing rod and display it in real time. Compared with the traditional spool zeroing tooling, the spool rotation angle can be observed during the debugging process, thereby improving the efficiency and accuracy of the spool zeroing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention (with a valve installed);

[0017] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 3 is a cross-sectional view of the present invention;

[0019] Figure 4 It is a schematic diagram of the installation mechanism of the valve core zero adjustment rod in the present invention;

[0020] Figure 5 It is a cross-sectional view of the valve core zero adjustment rod in the present invention.

[0021] In the figure: 1. Oil supply base; 2. Storage chamber; 3. Positioning bracket; 4. Valve core zero adjustment rod; 5. Dial; 6. Angle detector; 7. Magnet; 8. Mounting seat; 9. Cross brace; 10. Thrust ball bearing; 11. Wire retaining ring; 12. Connecting part; 13. Transmission part; 14. Rotating handle; 15. Sealing groove; 16. Sealing ring; 17. Positioning block; 18. Support foot; 19. High-pressure oil channel; 20. Low-pressure oil channel; 21. Oil drain hole; 22. Clearance. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0023] like Figure 1-5 As shown, the angle-recognizable 2D electromagnetic reversing valve spool zeroing device of the present embodiment comprises an oil supply base 1, on which is provided a storage chamber 2 for mounting a valve body, a positioning bracket 3 is provided on the upper portion of the oil supply base 1, on which is provided a spool zeroing rod 4, an angle detection module is provided above the spool zeroing rod 4, and an angle adjustment component is provided at the lower portion. The design of the angle detection module is capable of detecting the rotation angle of the spool zeroing rod 4 and displaying it in real time. Compared with the traditional spool zeroing tooling, the spool rotation angle can be observed during the debugging process, thereby improving the efficiency and accuracy of the spool zeroing.

[0024] The angle detection module includes a dial 5, an angle detector 6 is provided above the dial 5, a magnet 7 is provided below the dial 5, a gap 22 is reserved between the magnet 7 and the dial 5, and the angle detector 6 includes a signal transmission device on the upper surface of the dial 5 and a Hall angle detection plate located on the lower surface of the dial 5. The Hall angle detection plate detects the rotation angle of the magnet 7 and then transmits the information to the display through the signal transmission module, so as to monitor the valve rotation angle.

[0025] A mounting seat 8 for mounting the magnet 7 is provided on the upper part of the valve core zero adjustment rod 4. The magnet 7 and the mounting seat 8 are installed with interference fit to ensure that the magnet 7 can rotate synchronously with the valve core zero adjustment rod 4 to prevent the magnet 7 from rotating or shaking during operation and affecting the detection result. A shaft wire retaining ring 11 is provided below the mounting seat 8. The shaft wire retaining ring 11 is located between the cross support 9 and the dial 5, and its diameter is larger than the through hole on the cross support 9 to prevent the valve core from being unable to detect the angle after the gap 22 increases after the valve core zero adjustment rod 4 falls downward.

[0026] The positioning bracket 3 includes a cross brace 9, a thrust ball bearing 10 for mounting the valve core zero adjustment rod 4 is provided in the middle of the cross brace 9, and support feet 18 are provided at both ends of the cross brace 9. The support feet 18 are detachably connected to the oil supply base 1 by bolts. The function of the positioning bracket 3 is to avoid positioning the valve core zero adjustment rod 4 during the detection process and to overcome the upward thrust applied to the valve core zero adjustment rod 4 by the low-pressure chamber during operation.

[0027] The thrust ball bearing 10, the storage chamber 2 and the valve core zero adjustment rod 4 are coaxially distributed.

[0028] The angle adjustment assembly includes a connecting portion 12 and a transmission portion 13. The lower end of the connecting portion 12 extends into the valve body and is connected to the valve core. A rotating handle 14 is provided on the transmission portion 13. The rotating handle 14 provides a rotational thrust to the valve core zeroing rod 4 to drive the pilot valve core to rotate, and finally the high-pressure oil channel 19 and the low-pressure oil channel 20 are aligned with the oil channels on the side wall of the valve body. At this time, the zeroing operation is completed.

[0029] A sealing groove 15 is provided on the side wall of the connecting portion 12. A sealing ring 16 is provided in the sealing groove 15 and is located in the low-pressure chamber of the valve body. The design of the sealing ring 16 can prevent the hydraulic oil in the valve body from leaking from the low-pressure chamber.

[0030] The connecting portion 12 is a hexagonal column, which drives the valve core to rotate after being plugged into the valve core.

[0031] A positioning block 17 for mounting the rotating handle 14 is disposed on the outer side wall of the transmission part 13 , and a through hole sleeved on the positioning block 17 is formed at the end of the rotating handle 14 .

[0032] The oil supply base 1 is provided with a high-pressure oil passage 19 and a low-pressure oil passage 20 connected to the storage chamber 2, and the lower part of the oil supply base 1 is provided with an oil drain hole 21 connected to the storage chamber 2, and the outside of the high-pressure oil passage 19 and the low-pressure oil passage 20 are connected to pressure gauges.

[0033] Working principle / assembly process of this scheme: install the valve body with zero adjustment in the storage chamber 2, and then connect the positioning bracket 3 with the oil supply base 1. After the installation is completed, the thrust ball bearing 10, the storage chamber 2 and the valve core zero adjustment rod 4 are coaxially distributed, and the valve core zero adjustment rod 4 is connected to the valve core in the valve body. At this time, oil is supplied to the valve body through the high-pressure oil channel 19 and the low-pressure oil channel 20 and the oil supply pressure value is recorded. The valve core is driven to rotate by turning the rotating handle 14. As the valve core rotates, the oil supply pressure will change accordingly. When the oil supply pressure reaches the set value, it means that the high-pressure oil channel 19 and the low-pressure oil channel 20 are connected to the valve body and the oil channel on the valve core, and the zeroing operation is completed. Through multiple zeroing operations, the data value of each time is recorded, and the rotation angle of the valve core can be calculated according to the change of the oil pressure display data, so as to improve the efficiency and accuracy of the subsequent zeroing operation of the same valve core.

[0034] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0035] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion, such that a process, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, article, or apparatus / device.

[0037] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A 2D electromagnetic reversing valve core zeroing device capable of recognizing an angle, comprising an oil supply base (1), wherein the oil supply base (1) is provided with a storage chamber (2) for mounting a valve body, wherein: A positioning bracket (3) is arranged on the upper part of the oil supply base (1), a valve core zero adjustment rod (4) is arranged on the positioning bracket (3), an angle detection module is arranged above the valve core zero adjustment rod (4), and an angle adjustment component is arranged at the lower part.

2. The 2D electromagnetic reversing valve core zeroing device capable of recognizing an angle according to claim 1 is characterized in that: The angle detection module comprises a dial (5), an angle detector (6) is arranged above the dial (5), a magnetic steel (7) is arranged below the dial (5), and a gap (22) is reserved between the magnetic steel (7) and the dial (5).

3. The 2D electromagnetic reversing valve core zeroing device capable of recognizing angles according to claim 2 is characterized in that: A mounting seat (8) for mounting a magnetic steel (7) is arranged on the upper part of the valve core zero adjustment rod (4); the magnetic steel (7) and the mounting seat (8) are interference-mounted; and a shaft wire retaining ring (11) is arranged below the mounting seat (8).

4. The 2D electromagnetic reversing valve core zeroing device capable of recognizing angles according to claim 1 is characterized in that: The positioning bracket (3) comprises a cross brace (9), a thrust ball bearing (10) for mounting a valve core zero adjustment rod (4) is arranged in the middle of the cross brace (9), and supporting feet (18) are arranged at both ends of the cross brace (9), and the supporting feet (18) are detachably connected to the oil supply base (1) by bolts.

5. The 2D electromagnetic reversing valve core zeroing device capable of recognizing angles according to claim 4 is characterized in that: The thrust ball bearing (10), the storage chamber (2) and the valve core zero adjustment rod (4) are coaxially distributed.

6. The 2D electromagnetic reversing valve core zeroing device capable of recognizing angles according to claim 1 is characterized in that: The angle adjustment assembly comprises a connecting portion (12) and a transmission portion (13); the lower end of the connecting portion (12) extends into the valve body and is connected to the valve core; and the transmission portion (13) is provided with a rotating handle (14).

7. The 2D electromagnetic reversing valve core zeroing device capable of recognizing angles according to claim 6 is characterized in that: A sealing groove (15) is provided on the side wall of the connecting portion (12), and a sealing ring (16) located in the low-pressure chamber of the valve body is provided in the sealing groove (15).

8. The 2D electromagnetic directional valve core zeroing device capable of recognizing an angle according to claim 6, characterized in that: The connecting portion (12) is a prism structure.

9. The 2D electromagnetic reversing valve core zeroing device capable of recognizing angles according to claim 6, characterized in that: A positioning block (17) for mounting the rotating handle (14) is provided on the outer side wall of the transmission part (13).

10. The 2D electromagnetic reversing valve core zeroing device capable of recognizing angles according to claim 1, characterized in that: The oil supply base (1) is provided with a high-pressure oil passage (19) and a low-pressure oil passage (20) which are in communication with the storage chamber (2), and the lower part of the oil supply base (1) is provided with an oil drain hole (21) which is in communication with the storage chamber (2).

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