Novel electro-hydraulic linkage double-proportion control pilot valve handle

Abstract

The utility model relates to the technical field of pilot valve handles, in particular to a novel electro-hydraulic linkage double-proportion control pilot valve handle which comprises a valve body, a handle assembly, a transmission module, a plurality of cartridge valve modules, a plurality of sensor modules and a synchronous connecting rod. The transmission module is arranged on the valve body; the handle assembly is arranged on the transmission module; the plurality of cartridge valve modules are arranged on the valve body and are connected with the transmission module; the sensor modules are arranged on the valve body and located on the outer side of the cartridge valve module. The two ends of the synchronous connecting rod are connected with any cartridge valve module and one sensor module respectively. The utility model overcomes the defect of poor convenience in disassembly and maintenance in the prior art, and has the characteristics of convenience in disassembly and maintenance, low production cost and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of pilot valve handles, and particularly relates to a new type of pilot valve handle with electro-hydraulic linkage double-proportion control. Background Technique

[0002] The pilot valve handle is an important operating component in the hydraulic system. It directly connects and controls the opening, closing or adjusting functions of the pilot valve, and is used to control the pilot oil circuit of the main valve of construction machinery such as cranes, excavators, and loaders, playing a role in remote control.

[0003] In the prior art, the Chinese utility model patent with the authorization announcement number: CN221299655U proposed a new type of pilot valve handle with electro-hydraulic double-proportion control, which relates to the technical field of pilot valve handles, including a handle assembly, a valve body assembly, and a sensor assembly. Among them, the handle assembly and the sensor assembly are both installed on the valve body assembly. The sensor of the sensor assembly is coaxially arranged with the cartridge valve assembly. The relative position change between the sensor element in the sensor and the permanent magnet of the cartridge valve assembly can convert the change in magnetic flux into an electrical signal. The sensor and the cartridge valve assembly work together to convert the angular position signal of the handle assembly into a hydraulic signal and an analog electrical signal for double-proportion output.

[0004] However, for the above-mentioned new type of pilot valve handle with electro-hydraulic double-proportion control, since its sensor element and cartridge valve assembly are both arranged inside the sensor housing, it has the defect of poor disassembly, assembly and maintenance convenience. Content of the Utility Model

[0005] In view of the technical problem of poor disassembly, assembly and maintenance convenience existing in the prior art, the embodiment of the utility model provides a new type of pilot valve handle with electro-hydraulic linkage double-proportion control, which includes: a valve body, a handle assembly, a transmission module, a plurality of cartridge valve modules, a plurality of sensor modules, and a synchronous connecting rod;

[0006] The transmission module is arranged on the valve body;

[0007] The handle assembly is arranged on the transmission module;

[0008] A plurality of cartridge valve modules are arranged on the valve body, and the plurality of cartridge valve modules are connected to the transmission module;

[0009] A plurality of sensor modules are arranged on the valve body, and the sensor modules are located outside the cartridge valve modules;

[0010] Both ends of the synchronous connecting rod are respectively connected to any one of the cartridge valve modules and one of the sensor modules.

[0011] Furthermore, a plurality of first assembly counterbores and a plurality of second assembly counterbores are formed in the top of the valve body;

[0012] A plurality of first assembly counterbores are arranged along the axial direction of the valve body, and a plurality of cartridge valve modules are respectively arranged in the plurality of first assembly counterbores;

[0013] A plurality of second assembly counterbores are arranged along the axial direction of the valve body. The central axis of the second assembly counterbore is parallel to the central axis of the first assembly counterbore, and a plurality of sensor modules are respectively arranged in the plurality of second assembly counterbores.

[0014] Furthermore, a first assembly hole and a second assembly hole are formed in the synchronous connecting rod;

[0015] The first assembly hole is located at the head end of the synchronous connecting rod, and the first assembly hole is connected to the cartridge valve module;

[0016] The second assembly hole is located at the tail end of the synchronous connecting rod. The second assembly hole is connected to the sensor module. The central axis of the second assembly hole is parallel to the central axis of the first assembly hole. The central distance between the second assembly hole and the first assembly hole is equal to the central distance between the first assembly counterbore and the second assembly counterbore.

[0017] Furthermore, the cartridge valve module includes: a cartridge valve body, an assembly plunger, a first return spring, a compression cap and a stud;

[0018] The cartridge valve body is fixedly arranged in the inner cavity of the first assembly counterbore. The assembly plunger of the cartridge valve body protrudes from the top surface of the valve body, and the top of the assembly plunger is inserted into the first assembly hole;

[0019] The first return spring is sleeved on the assembly plunger. One end of the first return spring is connected to the cartridge valve body, and the other end of the first return spring is connected to the synchronous connecting rod;

[0020] The compression cap is covered on the top end face of the assembly plunger. The compression cap is connected to the transmission module. The first assembly hole is located between the compression cap and the first assembly counterbore;

[0021] The stud is fixedly arranged at the bottom of the compression cap. The stud is connected to the assembly plunger and is used to fixedly assemble the compression cap on the top of the assembly plunger;

[0022] The synchronous connecting rod and the cartridge valve module are pre-assembled to form a pre-assembled first assembly component.

[0023] Furthermore, a necking portion is formed on the circumferential side wall of the assembly plunger. The necking portion is located at the top of the assembly plunger, and the synchronous connecting rod is movably sleeved on the necking portion through the first assembly hole;

[0024] An assembly screw hole is formed on the top end face of the assembly plunger, and the stud is threadedly connected to the assembly screw hole.

[0025] Furthermore, the sensor module includes: an assembly housing, a guiding plunger, a second return spring, a sensor, a permanent magnet and a guiding sleeve shaft;

[0026] The assembly housing is fixedly arranged in the inner cavity of the second assembly counterbore. The assembly housing is a hollow cylindrical part, and the top of the assembly housing is designed in an open manner;

[0027] The guiding plunger is movably inserted into the inner cavity of the assembly housing. The guiding plunger matches the shape of the inner cavity of the assembly housing, and the top end of the guiding plunger protrudes from the top end face of the assembly housing;

[0028] The second return spring is arranged in the inner cavity of the assembly housing. One end of the second return spring is connected to the bottom wall of the inner cavity of the assembly housing, and the other end of the second return spring is connected to the bottom end of the guiding plunger, for elastically supporting the guiding plunger;

[0029] The sensor is fixedly arranged inside the assembly housing;

[0030] The permanent magnet is fixedly arranged on the guiding plunger, and the permanent magnet is located in the inner cavity of the assembly housing;

[0031] The axial cross-sectional shape of the guiding sleeve shaft is convex-shaped. The outer diameter of the top end of the guiding sleeve shaft is smaller than the outer diameter of the bottom end of the guiding sleeve shaft. A limiting groove is opened at the bottom end of the guiding sleeve shaft. The top end of the guiding sleeve shaft is movably inserted into the second assembly hole, and the guiding sleeve shaft is movably sleeved on the top end of the guiding plunger through the limiting groove.

[0032] Furthermore, a wire groove is opened on the circumferential side wall of the valve body. The wire groove penetrates through the outer wall of the valve body and communicates with the second assembly counterbore. The wire groove is exposed on the top end face of the valve body, for accommodating the connecting wire of the sensor.

[0033] Furthermore, the top end surface of the guiding plunger and the inner surface of the limiting groove are both spherical surfaces.

[0034] Furthermore, the sensor module further includes: a plurality of adjusting shims. The plurality of adjusting shims are movably sleeved on the top end of the guiding sleeve shaft. The plurality of adjusting shims are arranged in sequence along the axial direction of the guiding sleeve shaft. The plurality of adjusting shims are located between the synchronous connecting rod and the guiding plunger.

[0035] A pilot valve handle with a novel electro-hydraulic linkage double proportional control according to an embodiment of the present invention has the following beneficial effects:

[0036] 1. By arranging the permanent magnet and the sensor on the sensor module located outside the cartridge valve module, it is convenient for the user to disassemble and maintain the cartridge valve module or the sensor module according to the maintenance needs during the disassembly and maintenance process of the device, improving the convenience of disassembly and maintenance of the device, and solving the technical problem of poor convenience of disassembly and maintenance in the prior art.

[0037] 2. By arranging the permanent magnet and the sensor on the sensor module located outside the cartridge valve module, the selection range of the sensor is expanded, making the device suitable for assembling a general-purpose and lower-cost standard Hall sensor, thereby reducing the production cost of the device.

[0038] It is to be understood that both the foregoing general description and the following detailed description are exemplary and are intended to provide further explanation of the claimed technology. Brief Description of the Drawings

[0039] Figure 1 Assembly schematic diagram according to an embodiment of the present utility model (the protective cover is hidden);

[0040] Figure 2 For Figure 1 Partial enlarged schematic diagram of area A in

[0041] Figure 3 Assembly schematic diagram among the sensor module, the cartridge valve module and the synchronous link according to an embodiment of the present utility model;

[0042] Figure 4 Part schematic diagram of the valve body according to an embodiment of the present utility model;

[0043] Figure 5 Part schematic diagram of the synchronous link according to an embodiment of the present utility model;

[0044] Figure 6 Assembly schematic diagram between the cartridge valve module and the synchronous link according to an embodiment of the present utility model;

[0045] Figure 7 Partial assembly schematic diagram according to an embodiment of the present utility model;

[0046] Figure 8 Internal structure schematic diagram of the sensor module according to an embodiment of the present utility model.

[0047] Explanation of the drawing reference numerals:

[0048] 1 - Valve body, 2 - Handle assembly, 3 - Cartridge valve module, 31 - First assembly counterbore, 32 - Cartridge valve body, 321 - Assembly plunger, 33 - First return spring, 341 - First assembly hole, 342 - Compression cap, 343 - Stud, 344 - Necking-down part, 345 - Assembly screw hole, 4 - Sensor module, 41 - Second assembly counterbore, 42 - Assembly housing, 43 - Guide plunger, 44 - Second return spring, 45 - Sensor, 451 - Connecting wire, 46 - Permanent magnet, 471 - Second assembly hole, 472 - Guide sleeve shaft, 473 - Adjusting gasket, 474 - Limiting groove 474, 48 - Wire groove, 5 - Transmission module, 51 - Universal joint, 52 - Assembly plate (cross plate), 531 - Assembly nut, 532 - Assembly screw, 54 - Pressure plate, 55 - Fastening screw, 6 - Synchronous connecting rod, 100 - First pre-assembly component. Detailed implementation manners

[0049] The preferred embodiments of the present utility model will be described in detail below in conjunction with the accompanying drawings, and the present utility model will be further elaborated.

[0050] The foregoing and other technical contents, features and effects of the present utility model will be clearly presented in the following detailed description of the embodiments with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or rear, etc., are only with reference to the direction of the accompanying drawings. Therefore, the directional terms used are for illustration and not for limiting the present utility model. In addition, in all the embodiments, the same reference numerals represent the same elements.

[0051] As Figure 1 、 2 shown, the pilot valve handle with novel electro-hydraulic linkage double-proportion control according to the embodiment of the present utility model includes: a valve body 1, a handle assembly 2, a transmission module 5, a plurality of cartridge valve modules 3, a plurality of sensor modules 4 and a synchronous connecting rod 6.

[0052] Specifically, as Figure 1 、 2 shown, the transmission module 5 is arranged on the valve body 1 and is used to drive the plurality of cartridge valve modules 3 to operate; the handle assembly is arranged on the transmission module 5; the plurality of cartridge valve modules 3 are arranged on the valve body 1, and the plurality of cartridge valve modules 3 are connected to the transmission module 5; the plurality of sensor modules 4 are arranged on the valve body 1, and the sensor module 4 is located outside the cartridge valve module 3; both ends of the synchronous connecting rod 6 are respectively connected to any one of the cartridge valve modules 3 and one of the sensor modules 4.

[0053] Preferably, as Figure 1 、 2As shown in the figure, the transmission module 5 includes: a universal joint 51, an assembly plate 52, a number of assembly components, a pair of pressure plates 54, a number of fastening screw holes (not shown in the figure), a number of fastening screws 55 and a protective sleeve (not shown in the figure); the universal joint 51 is fixedly arranged at the top of the valve body 1, and the tail end of the handle assembly is fixedly connected to the universal joint 51; the assembly plate 52 is fixedly sleeved on the tail end of the handle assembly. In this embodiment, the assembly plate 52 is preferably a cross plate; a number of assembly components are respectively arranged at a number of ends of the assembly plate 52, and a number of assembly components are respectively connected to a number of cartridge valve modules 3; a pair of pressure plates 54 are movably sleeved at the bottom end of the universal joint 51, and one of the pressure plates 54 is located between the other pressure plate 54 and the valve body 1 and is fixedly connected to the top of the valve body 1; a number of fastening screw holes are opened on one of the pressure plates 54; a number of fastening screws 55 are rotatably arranged on the other pressure plate 54, and a number of fastening screws 55 are respectively threadedly connected to a number of fastening screw holes; the protective sleeve is movably sleeved on the outside of the universal joint 51, the top edge of the protective sleeve is fixedly connected to the tail end of the handle assembly, and the bottom edge of the protective sleeve is clamped and fixed between a pair of pressure plates 54.

[0054] Preferably, as Figure 1 , 2 shown, the assembly component includes: a number of assembly nuts 531 and a number of assembly screws 532; a number of assembly nuts 531 are respectively fixedly arranged at a number of ends of the assembly plate 52; a number of assembly screws 532 are respectively inserted into the inner cavities of a number of assembly nuts 531, a number of assembly screws 532 are respectively threadedly connected to a number of assembly nuts 531, and the bottom ends of a number of assembly screws 532 are respectively connected to a number of cartridge valve modules 3 for driving the cartridge valve modules 3 to operate.

[0055] Furthermore, as Figure 1 , 2 , Figure 4 shown, a number of first assembly counterbores 31 and a number of second assembly counterbores 41 are opened at the top of the valve body 1; a number of first assembly counterbores 31 are arranged along the axial direction of the valve body 1, and a number of cartridge valve modules 3 are respectively arranged in a number of first assembly counterbores 31; a number of second assembly counterbores 41 are arranged along the axial direction of the valve body 1, the central axis of the second assembly counterbore 41 is parallel to the central axis of the first assembly counterbore 31, and a number of sensor modules 4 are respectively arranged in a number of second assembly counterbores 41.

[0056] Furthermore, as Figure 1 , 2As shown in FIGS. 4 and 5, a first assembly hole 341 and a second assembly hole 471 are formed in the synchronous connecting rod 6; the first assembly hole 341 is located at the head end of the synchronous connecting rod 6 and is connected to the cartridge valve module 3; the second assembly hole 471 is located at the tail end of the synchronous connecting rod 6 and is connected to the sensor module 4. The central axis of the second assembly hole 471 is parallel to the central axis of the first assembly hole 341, and the central distance between the second assembly hole 471 and the first assembly hole 341 is equal to the central distance between the first assembly counterbore 31 and the second assembly counterbore 41.

[0057] Furthermore, as Figures 1 to 7 shown, the cartridge valve module 3 includes: a cartridge valve body 32, a first return spring 33, a compression cap 342 and a stud 343; the cartridge valve body 32 is fixedly arranged in the inner cavity of the first assembly counterbore 31, and the assembly plunger 321 of the cartridge valve body 32 protrudes from the top surface of the valve body 1. The top of the assembly plunger 321 is inserted into the first assembly hole 341. In this embodiment, the cartridge valve body 32 is an elastic telescopic device, and preferably, the cartridge valve body 32 in the Chinese utility model patent with the authorization publication number of CN221299655U in the prior art is used; the first return spring 33 is sleeved on the assembly plunger 321, one end of the first return spring 33 is connected to the cartridge valve body 32, and the other end of the first return spring 33 is connected to the synchronous connecting rod 6; the compression cap 342 covers the top end face of the assembly plunger 321, the first assembly hole 341 is located between the compression cap 342 and the first assembly counterbore 31, and the top of the compression cap 342 abuts against the bottom of one of the assembly screws 532 of the transmission module 5; the stud 343 is fixedly arranged at the bottom of the compression cap 342, and the stud 343 is connected to the assembly plunger 321 for fixedly assembling the compression cap 342 on the top of the assembly plunger 321; the synchronous connecting rod 6 and the cartridge valve module 3 are pre-assembled to form a pre-assembled first assembly component 100.

[0058] Furthermore, as Figure 6 、 7 shown, a reduced neck portion 344 is formed on the circumferential side wall of the assembly plunger 321. The reduced neck portion 344 is located at the top of the assembly plunger 321, and the synchronous connecting rod 6 is movably sleeved on the reduced neck portion 344 through the first assembly hole 341; an assembly screw hole 345 is formed on the top end face of the assembly plunger 321, and the stud 343 is threadedly connected to the assembly screw hole 345.

[0059] Furthermore, as Figures 1 to 5, as shown in Fig. 8, the sensor module 4 includes: an assembly housing 42, a guiding plunger 43, a second return spring 44, a sensor 45, a permanent magnet 46 and a guiding sleeve shaft 472; the assembly housing 42 is fixedly arranged in the inner cavity of the second assembly counterbore 41, the assembly housing 42 is a hollow cylindrical part, and the top of the assembly housing 42 is designed in an open manner; the guiding plunger 43 is movably inserted into the inner cavity of the assembly housing 42, the guiding plunger 43 matches the shape of the inner cavity of the assembly housing 42, and the top end of the guiding plunger 43 protrudes from the top end face of the assembly housing 42; the second return spring 44 is arranged in the inner cavity of the assembly housing 42, one end of the second return spring 44 is connected to the bottom wall of the inner cavity of the assembly housing 42, and the other end of the second return spring 44 is connected to the bottom end of the guiding plunger 43 for elastically supporting the guiding plunger 43; the sensor 45 is fixedly arranged inside the assembly housing 42, and in this embodiment, the sensor 45 preferably uses a Hall linear displacement sensor 45; the permanent magnet 46 is fixedly arranged on the guiding plunger 43, and the permanent magnet 46 is located in the inner cavity of the assembly housing 42; the axial cross-sectional shape of the guiding sleeve shaft 472 is convex, the outer diameter of the top end of the guiding sleeve shaft 472 is smaller than the outer diameter of the bottom end of the guiding sleeve shaft 472, a limiting groove 474 is formed at the bottom end of the guiding sleeve shaft 472, the top end of the guiding sleeve shaft 472 is movably inserted into the second assembly hole 471, and the guiding sleeve shaft 472 is movably sleeved on the top end of the guiding plunger 43 through the limiting groove 474.

[0060] Further, as Figures 1 to 4 shown, a wire groove 48 is formed on the circumferential side wall of the valve body 1, the wire groove 48 penetrates through the outer wall of the valve body 1 and communicates with the second assembly counterbore 41, and the wire groove 48 is exposed on the top end face of the valve body 1 for accommodating the connecting wire 451 of the sensor 45.

[0061] Further, as Figures 1 to 3 shown in Fig. 8, the top surface of the top end of the guiding plunger 43 and the inner surface of the limiting groove 474 are both spherical surfaces. In this embodiment, the top surface of the top end of the guiding plunger 43 and the inner surface of the limiting groove 474 are both designed as spherical surfaces, so as to provide angle compensation for the cartridge valve module 3 of the device, reduce the assembly precision of the device, and achieve the purpose that even when the cartridge valve module 3 of the device is slightly deformed under external force impact, it will still not have a great impact on the linkage relationship between the cartridge valve module 3 and the sensor module 4 of the device.

[0062] Further, as Figures 1 to 3 shown in Fig. 8, the sensor module 4 further includes: a plurality of adjusting shims 473, the plurality of adjusting shims 473 are movably sleeved on the top end of the guiding sleeve shaft 472, the plurality of adjusting shims 473 are arranged in sequence along the axial direction of the guiding sleeve shaft 472, and the plurality of adjusting shims 473 are located between the synchronous connecting rod 6 and the guiding plunger 43.

[0063] The working principle of the device is as follows:

[0064] The user pulls the handle assembly 2 to deflect it by a certain angle, driving the assembly plate 52 (cross plate) connected thereto to deflect synchronously by a certain angle, and then driving the assembly screw 532 provided at the end of the assembly plate 52 (cross plate) to press down the compression cap 342 of the cartridge valve module 3, thereby compressing the assembly plunger 321 and the first return spring 33 of the cartridge valve module 3; during the process of the screw pressing down the compression cap 342 of the cartridge valve module 3, the compression cap 342 drives the synchronous link 6 to press down the guide plunger 43 and the second return spring 44 of the sensor module 4 synchronously, so that the guide plunger 43 retracts into the inner cavity of the assembly housing 42 by a certain distance. During this process, the permanent magnet 46 provided on the guide plunger 43 gradually approaches the sensor 45, resulting in a change in magnetic flux, causing the sensor 45 to generate an analog electrical signal output proportional to the deflection angle of the handle assembly.

[0065] As above, with reference to Figures 1 to 8 A pilot valve handle with a novel electro-hydraulic linkage double-proportion control according to an embodiment of the present invention is described, having the following beneficial effects:

[0066] 1. By arranging the permanent magnet and the sensor on the sensor module located outside the cartridge valve module, it is convenient for the user to disassemble and maintain the cartridge valve module or the sensor module as needed during the disassembly and maintenance process of the device, improving the convenience of disassembly and maintenance of the device and solving the technical problem of poor convenience of disassembly and assembly and maintenance in the prior art.

[0067] 2. By arranging the permanent magnet and the sensor on the sensor module located outside the cartridge valve module, the applicable range of sensor selection is expanded, making the device suitable for assembling general-purpose and lower-cost standard Hall sensors, thereby reducing the production cost of the device.

[0068] It should be noted that in this specification, the terms "including", "comprising" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising..." does not exclude the presence of additional identical elements in the process, method, article or device including the said element.

[0069] Although the content of the present utility model has been described in detail through the above preferred embodiments, it should be recognized that the above description should not be construed as a limitation of the present utility model. After those skilled in the art have read the above content, various modifications and alternatives to the present utility model will be obvious. Therefore, the protection scope of the present utility model shall be defined by the appended claims.

Claims

1. A new type of electro-hydraulic linkage dual proportional control pilot valve handle, characterized in that: It includes: valve body, handle assembly, transmission module, several cartridge valve modules, several sensor modules and synchronous connecting rod; The transmission module is arranged on the valve body; The handle assembly is arranged on the transmission module; The plurality of cartridge valve modules are arranged on the valve body, and the plurality of cartridge valve modules are connected to the transmission module; The plurality of sensor modules are arranged on the valve body, and the sensor modules are located outside the cartridge valve module; The two ends of the synchronization connecting rod are respectively connected to any one of the cartridge valve modules and one of the sensor modules.

2. The new electro-hydraulic dual proportional control pilot valve handle as claimed in claim 1 is characterized in that: The top of the valve body is provided with a plurality of first assembly countersunk holes and a plurality of second assembly countersunk holes; The plurality of first assembly counterbores are arranged along the axial direction of the valve body, and the plurality of cartridge valve modules are respectively arranged in the plurality of first assembly counterbores; The plurality of second assembly counterbores are arranged along the axial direction of the valve body, the central axes of the second assembly counterbores are parallel to the central axis of the first assembly counterbores, and the plurality of sensor modules are respectively arranged in the plurality of second assembly counterbores.

3. The new electro-hydraulic dual proportional control pilot valve handle as claimed in claim 2 is characterized in that: The synchronous connecting rod is provided with a first assembly hole and a second assembly hole; The first assembly hole is located at the head end of the synchronization connecting rod, and the first assembly hole is connected to the cartridge valve module; The second assembly hole is located at the tail end of the synchronization connecting rod, the second assembly hole is connected to the sensor module, the center axis of the second assembly hole is parallel to the center axis of the first assembly hole, and the center distance between the second assembly hole and the first assembly hole is equal to the center distance between the first assembly countersunk hole and the second assembly countersunk hole.

4. The new electro-hydraulic dual proportional control pilot valve handle as claimed in claim 3 is characterized in that: The cartridge valve module comprises: a cartridge valve body, an assembly plunger, a first return spring, a pressure cap and a stud; The cartridge valve body is fixedly disposed in the inner cavity of the first assembly counterbore, the assembly plunger of the cartridge valve body protrudes from the top surface of the valve body, and the top of the assembly plunger is plugged into the first assembly hole; The first return spring is sleeved on the assembly plunger, one end of the first return spring is connected to the cartridge valve body, and the other end of the first return spring is connected to the synchronization connecting rod; The pressure cap cover is arranged on the top end surface of the assembly plunger, the pressure cap is connected to the transmission module, and the first assembly hole is located between the pressure cap and the first assembly countersunk hole; The stud is fixedly arranged at the bottom of the pressing cap, and the stud is connected to the assembly plunger, and is used for fixing the pressing cap on the top of the assembly plunger.

5. The new electro-hydraulic dual proportional control pilot valve handle as claimed in claim 4 is characterized in that: A constricted neck portion is provided on the circumferential side wall of the assembly plunger, the constricted neck portion is located at the top of the assembly plunger, and the synchronous connecting rod is movably sleeved on the constricted neck portion through the first assembly hole; An assembly screw hole is provided on the top end surface of the assembly plunger, and the stud is threadedly connected to the assembly screw hole.

6. The new type of electro-hydraulic dual proportional control pilot valve handle as claimed in claim 3 is characterized in that: The sensor module comprises: an assembly housing, a guide plunger, a second return spring, a sensor, a permanent magnet and a guide sleeve shaft; The assembly shell is fixedly arranged in the inner cavity of the second assembly counterbore, the assembly shell is a hollow cylindrical member, and the top of the assembly shell adopts an open design; The guide plunger is movably inserted into the inner cavity of the assembly shell, the guide plunger matches the shape of the inner cavity of the assembly shell, and the top end of the guide plunger protrudes from the top end surface of the assembly shell; The second return spring is arranged in the inner cavity of the assembly housing, one end of the second return spring is connected to the bottom wall of the inner cavity of the assembly housing, and the other end of the second return spring is connected to the bottom end of the guide plunger, for elastically supporting the guide plunger; The sensor is fixedly arranged inside the assembly housing; The permanent magnet is fixedly arranged on the guide plunger, and the permanent magnet is located in the inner cavity of the assembly shell; The axial cross-section of the guide sleeve is in a convex shape, the outer diameter of the top end of the guide sleeve is smaller than the outer diameter of the bottom end of the guide sleeve, a limiting groove is provided at the bottom end of the guide sleeve, the top end of the guide sleeve is movably connected with the second assembly hole, and the guide sleeve is movably sleeved on the top end of the guide plunger through the limiting groove.

7. The new electro-hydraulic dual proportional control pilot valve handle as claimed in claim 6 is characterized in that: A wire groove is provided on the circumferential side wall of the valve body, the wire groove passes through the outer wall of the valve body and is connected with the second assembly counterbore, and the wire groove is exposed on the top end surface of the valve body for accommodating the connecting wire of the sensor.

8. The new electro-hydraulic dual proportional control pilot valve handle as claimed in claim 6 is characterized in that: The top surface of the guide plunger and the inner surface of the limiting groove are both spherical surfaces.

9. The new electro-hydraulic dual proportional control pilot valve handle as claimed in claim 6 is characterized in that: The sensor module further comprises: a plurality of adjustment gaskets, which are movably sleeved on the top end of the guide sleeve shaft, are arranged in sequence along the axial direction of the guide sleeve shaft, and are located between the synchronous connecting rod and the guide plunger.

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