Automatic clamping device for pilot valve

Abstract

The invention discloses an automatic pilot valve clamping device which comprises a fixing base used for fixing the automatic pilot valve clamping device and fixed to a working table of an automatic pilot valve test bed. The base special for the pilot valve is fixed on the fixed base through screws and used for fixing the electromagnetic pilot valve to be tested, the base special for the pilot valve and the fixed base are both provided with pipelines which are communicated with each other, and a test connector is installed so as to facilitate the test of the electromagnetic pilot valve; the clamping blocks are arranged on two sides of the surface of the special base for the pilot valve and are used for clamping the pilot valve to be tested; the invention discloses a corner cylinder which is arranged on a special base for a pilot valve, relates to the technical field of pilot valve testing, and solves the problems that when an existing pilot valve testing device is used, the specification of the pilot valve is limited due to the fact that the distance for positioning is fixed, and a junction box needs to be manually and repeatedly connected with the pilot valve, so that the overall testing efficiency is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of pilot valve testing, in particular to an automatic clamping device for a pilot valve. Background Art

[0002] At present, the electromagnetic force of the existing electromagnetic pilot valve for mining is generally not tested, resulting in that after many electromagnetic pilot valves are put into operation, the electromagnetic thrust rod of the electromagnetic valve cannot push the pressure plate of the pilot valve, causing the valve core to be unable to open, seriously affecting the use. In the electromagnetic force effectiveness testing device of the electromagnetic pilot valve with application number CN2015106111318, the base, adjustable power supply and intelligent acquisition and display device are fixed on the bottom plate, and the front side plate and the rear side plate are fixed on the two opposite sides of the base. A high boss and a low boss are raised on the top of the front side plate and the rear side plate respectively, and the adjustment table can be movably inserted between the high boss and the low boss through two long rod bolts. The structure is simple, the operation is easy, and the debugging effect is reliable and accurate.

[0003] Although the device has the above advantages, it still has certain disadvantages in actual use. Since the spacing between the front and rear side panels used to position and determine the test station is fixed, the specifications of the pilot valve are limited during testing, and the junction box used to connect the pilot valve test requires repeated manual wiring, resulting in a decrease in the overall test efficiency. Therefore, it is necessary to solve the problems that still exist in the above device. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides an automatic clamping device for a pilot valve, which solves the problem that when the existing pilot valve testing device is used, the specifications of the pilot valve are limited due to the fixed spacing used for positioning, and the junction box needs to be manually connected to the pilot valve repeatedly, thereby reducing the overall testing efficiency.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an automatic clamping device for a pilot valve, comprising:

[0006] A fixed base for fixing the automatic clamping device of the pilot valve, wherein the fixed base is fixed on a workbench of the automatic test bench for the pilot valve;

[0007] A special base for the pilot valve, which is fixed on a fixed base by screws and is used to fix the electromagnetic pilot valve to be tested. The special base for the pilot valve and the fixed base are both provided with interconnecting pipes, and a test joint is installed to facilitate the electromagnetic pilot valve test;

[0008] Clamping blocks, which are arranged on both sides of the surface of the dedicated base of the pilot valve and are used to clamp the pilot valve to be tested;

[0009] Angle cylinder, which is arranged on a special base for the pilot valve and is used for feeding and testing the pilot valve by rotating the shaft end;

[0010] A material picking assembly, which is arranged on the shaft end of the angle cylinder and is used for feeding and picking up materials when the pilot valve is loaded;

[0011] A pressure plate, which is arranged on a special base of the pilot valve and is used for limiting and protecting the rear of the pilot valve;

[0012] The toggle assembly acts on the outside of the pressure plate, and abuts against the rear side of pilot valves of different models by toggling the pressure plate to move.

[0013] Preferably, a front plate is fixedly connected to the surface of the special base for the pilot valve, and cylinder seats are fixedly connected to both sides of the surface of the special base for the pilot valve, and telescopic cylinders are fixedly connected to the outer surfaces of the cylinder seats on both sides, and a pressure block is fixedly connected to the output end of the telescopic cylinder, and the outer surface of the pressure block abuts against the outer surface of the pressure plate, and the body of the pressure plate is threadedly connected with a knurled hand screw, and the outside of the knurled hand screw is rotatably connected with a tension spring plate, and the tension spring plate is fixed to the surface of the special base for the pilot valve, and a tension spring is fixedly connected to the outer surface of the tension spring plate, and the tension spring is sleeved on the outside of the knurled hand screw lead screw, and one end is fixedly connected to the outer surface of the pressure plate, and a plug pressure plate is fixedly connected to the axial end of the angle cylinder, and a wire pressing assembly is provided on the plug pressure plate.

[0014] Preferably, the material picking assembly includes a connecting plate, the connecting plate is fixedly connected to the shaft end of the angle cylinder, the outer surface of the connecting plate is fixedly connected with a telescopic clamp, a material box is arranged below the telescopic clamp, the interior of the material box is movably connected with a slide plate, the outer surface of the slide plate is fixedly connected with a spring rod, and the outer surface of the spring rod is fixedly connected to the interior of the material box.

[0015] Preferably, the body of the material box is provided with two through slots, and fixed frames are provided outside the through slots on both sides, and the outer surfaces of the fixed frames on both sides are fixedly connected to the outer surface of the material box, and the outer surface of the fixed frame on one side is highly connected to a push-pull cylinder, and the output end of the push-pull cylinder is fixedly connected to a sliding column, and the outer surface of the sliding column is respectively movably connected to the outer surfaces of the fixed frames on both sides, the through slots on both sides and the inside of the material box.

[0016] Preferably, the toggle assembly includes a push plate, the outer surface of the push plate is provided with a clamping groove, the interior of the clamping groove is movably connected to the screw rod portion of the knurled hand screw, the outer surface of the push plate is movably connected to a rotating plate, the rotating plate body is provided with a through sliding groove, the interior of the sliding groove is movably connected to a pin rod, and one end of the pin rod is fixedly connected to the outer surface of the push plate.

[0017] Preferably, a telescopic rod is provided on the outside of the push plate, and the outer surface of the telescopic rod is rotatably connected to two rotating racks, and the outer surfaces of the two rotating racks are respectively fixedly connected to the outside of the push plate and the angle cylinder.

[0018] Preferably, a driving unit is provided on the outside of the push plate, and the driving unit includes a fixed gear, an outer surface of the fixed gear is fixedly connected to the outer surface of the knurled hand screw, an outer surface of the fixed gear is meshed with a rotating gear, an outer surface of the rotating gear is fixedly connected to a driving motor, and an outer surface of the driving motor is fixedly connected to the outer surface of the push plate.

[0019] Preferably, the outer surface of the fixed gear is meshed with a rack, the outer surface of the rack is slidably connected with a support plate, the outer surface of the support plate is fixedly connected to the outer surface of the push plate, the outer surface of the rack is fixedly connected to a displacement sensor, and the outer surface of the displacement sensor is fixedly connected to the outer surface of the push plate.

[0020] Beneficial Effects

[0021] The present invention provides an automatic clamping device for a pilot valve. Compared with the prior art, the present invention has the following beneficial effects:

[0022] (1) By setting a clamping device, the pilot valve is positioned by using clamping blocks on both sides, and the rear of the pilot valve is abutted by sliding the pressure plate. On the one hand, the sealing of the connection between the pipeline of the pilot valve and the pipeline on the special base of the pilot valve is improved, and on the other hand, pilot valves of different specifications can be clamped, thereby expanding the scope of use.

[0023] (2) By setting up a material picking assembly and utilizing the functions of the connecting plate and the telescopic clamp, the pilot valve to be tested can be picked up and loaded and unloaded. At the same time, by utilizing the cooperation of the slide plate and the slide column, the pilot valves can be fed one by one, thereby improving the continuity and efficiency of the test.

[0024] (3) By setting up the toggle assembly, the push plate is connected to the rotating plate and the knurled thumb screw respectively through the action of the pin rod and the clamping groove. Therefore, during the process of rotating and loading, the pressure plate is pulled to move, so as to facilitate the positioning and loading of the pilot valve, and at the same time, the continuity and efficiency of the test are improved.

[0025] (4) By setting up a driving unit, the rotation of the driving motor and the transmission effect of the fixed gear and the rotating gear are utilized to make the knurled thumb screw rotate accordingly, so as to drive the pressure plate to move and adjust the abutment position of the pressure plate through the effect of the threaded connection, thereby facilitating the abutment of pilot valves of different specifications, so as to improve the use range of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional diagram of the external structure of the present invention;

[0027] Figure 2 It is a side view of the external structure of the present invention;

[0028] Figure 3It is a top view of the external structure of the present invention;

[0029] Figure 4 The external structure stereogram of the angle cylinder of the present invention;

[0030] Figure 5 The external structure stereogram of the push plate of the present invention;

[0031] Figure 6 The figure is a three-dimensional diagram of the external structure of the rack of the present invention;

[0032] Figure 7 It is a three-dimensional diagram of the internal structure of the material box of the present invention.

[0033] In the figure: 1, fixed base; 2, special base for pilot valve; 3, clamping block; 4, material picking assembly; 41, connecting plate; 42, telescopic clamp; 43, material box; 44, sliding column; 45, sliding plate; 46, spring rod; 47, through groove; 48, fixed frame; 49, push-pull cylinder; 5, front plate; 6, cylinder seat; 7, toggle assembly; 71, push plate; 72, clamping groove; 73, drive unit; 731, fixed gear; 732, rotating gear; 733, driving motor; 734, rack; 735, support plate; 736, displacement sensor; 74, rotating plate; 75, slide groove; 76, pin rod; 77, telescopic rod; 78, rotating frame; 8, telescopic cylinder; 9, pressure block; 10, pressure plate; 11, tension spring plate; 12, tension spring; 13, knurled thumb screw; 14, angle cylinder; 15, plug pressure plate; 16, wire pressing assembly. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figure 1-7 The present invention provides a technical solution: an automatic clamping device for a pilot valve:

[0036] Embodiment 1: It includes a fixed base 1 arranged on a workbench of an automatic test bench for pilot valves, the fixed base 1 is fixedly connected with a special base 2 for pilot valves by screws, two clamping blocks 3 are fixedly connected to the special base 2 for pilot valves, the clamping blocks 3 are used for positioning and placing the pilot valves to prevent the pilot valves from shaking left and right, a front plate 5 is fixedly connected to the special base 2 for pilot valves, the fixed base 1, the special base 2 for pilot valves and the front plate 5 are all provided with through and mutually connected pipes, the pipes on the front plate 5 are connected with an external high-pressure water pump system, and the pilot valves are tested by being connected with them, two cylinder seats 6 are fixedly connected to the outer surface of the special base 2 for pilot valves, telescopic cylinders 8 are installed on the two cylinder seats 6, and the telescopic cylinders 8 are connected with an external control circuit, and the output ends of the two telescopic cylinders 8 are fixedly connected with pressure blocks 9, and the surfaces of the pressure blocks 9 are provided with chamfered surfaces, and a pressure plate 10 is movably connected between the outer surfaces of the two pressure blocks 9, and two edges and corners on one side of the surface of the pressure plate 10 are provided with chamfered surfaces, which are abutted with the chamfered surfaces on the pressure blocks 9 to lift The pressing plate 10 has abutting effect on the pilot valve. The pressing plate 10 is located behind the electromagnetic pilot valve to be tested, and is used to protect the back of the electromagnetic pilot valve to be tested from being crushed. The body of the pressing block 9 is threadedly connected with a knurled hand screw 13. The knurled hand screw 13 is composed of a torsion plate that is easy to rotate by hand and a screw rod, and a hand-held anti-slip measure is provided on the arc surface of the torsion plate. The outside of the knurled hand screw 13 is threadedly connected with a tension spring plate 11, and the tension spring plate 11 is fixed on the surface of the special base 2 of the pilot valve. 1 is fixedly connected with a tension spring 12 on its outer surface, which is sleeved on the outside of the knurled hand screw 13 and fixedly connected with the surface of the pressure block 9 at one end, so that the pressure block 9 can be easily reset by rebounding. A rotation cylinder 14 is fixedly connected with the outer surface of the pilot valve dedicated base 2, and the rotation cylinder 14 is connected with the external control circuit. A plug pressing plate 15 is fixedly connected with the shaft end of the rotation cylinder 14, and a wire pressing assembly 16 is arranged on the outer surface of the plug pressing plate 15, which is composed of a lifting cylinder and a socket adapted to the pilot valve plug.

[0037] In this embodiment, when placing the pilot valve, first pull the pressure plate 10 through the torsion plate of the knurled hand screw 13, and compress the tension spring 12, then place the pilot valve between the two clamping blocks 3, and align and connect its pipeline with the pipeline on the dedicated base 2 of the pilot valve. After the pilot valve is placed, loosen the knurled hand screw 13, and then the pressure plate 10 is reset by the rebound of the tension spring 12, and the rear of the pilot valve is abutted by the pressure plate 10, thereby avoiding the problem of the rear of the pilot valve being crushed, and then the output end of the telescopic cylinder 8 on the cylinder seat 6 extends, driving the pressure block 9 to abut the pressure plate 10, thereby improving the pressure plate 10 against the pilot valve. The abutment effect of the valve, then the angle cylinder 14 drives the wire pressing assembly 16 to move to the top of the pilot valve plug through the plug pressure plate 15, and then the lifting cylinder drives the socket down to make it plugged with the plug, thereby completing the automatic power connection of the pilot valve, and then the external high-pressure water pump system is tested for the internal oil supply of the pilot valve through the fixed base 1, the special base 2 for the pilot valve and the pipeline on the front plate 5. When testing pilot valves of different specifications, the knurled hand screw 13 is turned to make the pressure plate 10 slide along the screw rod of the knurled hand screw 13, so that the abutment effect on pilot valves of different specifications is achieved by adjusting the position of the pressure plate 10.

[0038] Embodiment 2: A material picking assembly 4 is arranged outside the clamping block 3, and the material picking assembly 4 includes a connecting plate 41, and the connecting plate 41 is fixedly connected to the shaft end of the angle cylinder 14, and a telescopic clamp 42 is fixedly connected to the outer surface of the connecting plate 41, and the telescopic clamp 42 is composed of an electric push rod and an electric clamping claw, and both are electrically connected to the external control circuit, and a material box 43 is arranged below the telescopic clamp 42, and the material box 43 is used for stacking the pilot valve to be tested, and the inside of the material box 43 is movably connected with a slide plate 45, and the outer surface of the slide plate 45 is fixedly connected with a spring rod 46, and the outer surface of the spring rod 46 is fixedly connected to the inside of the material box 43, and the body of the material box 43 is provided with two through grooves 47, The size and shape of the interior of the through groove 47 are compatible with the exterior of the pilot valve. A fixed frame 48 is provided on the exterior of the through grooves 47 on both sides. The height of the side of the fixed frame 48 is less than the height of the pilot valve, so as to facilitate the telescopic clamp 42 to pick up the pilot valve. The outer surfaces of the fixed frames 48 on both sides are fixedly connected to the outer surface of the material box 43. The outer surface height of the fixed frame 48 on one side is highly connected to a push-pull cylinder 49. The push-pull cylinder 49 is made of an existing electric push rod and is electrically connected to an external control circuit. The output end of the push-pull cylinder 49 is fixedly connected to a sliding column 44. The outer surface of the sliding column 44 is respectively movably connected to the outer surfaces of the fixed frames 48 on both sides, the through grooves 47 on both sides and the interior of the material box 43.

[0039] In this embodiment, the pilot valves to be tested are randomly selected and stacked one by one inside the material box 43, and the slide plate 45 is pushed down to compress the output end of the spring rod 46. When the pilot valve needs to be fed, the output end of the push-pull cylinder 49 is extended, so that the slide column 44 slides on the two fixed frames 48 and the two through grooves 47 and the inside of the material box 43 respectively, so that the top pilot valve inside the material box 43 is pushed from the inside of the through groove 47 on one side to the fixed frame 48 on the other side. Then the telescopic clamp 42 picks up the pilot valve on the fixed frame 48 through the lifting and clamping, and follows the rotation of the shaft end of the angle cylinder 14 through the connecting plate 41, driving the pilot valve to rotate to the top of the clamping blocks 3 on both sides, and then automatically loads and unloads the pilot valve through lifting and disengaging the clamping.

[0040] When the locking cam 75 is unlocked, the locking cam 73 is unlocked, and the locking cam 73 is unlocked when the locking cam 73 is unlocked.

[0041] In this embodiment, when the axial end of the angle cylinder 14 rotates for loading, the rotating plate 74 rotates accordingly and squeezes the push pin 76 to slide inside the slide groove 75, thereby driving the push plate 71 to slide laterally. The push plate 71 is connected to the knurled hand screw 13 through the clamping groove 72, thereby driving the pressure plate 10 to slide, so as to facilitate the loading of the pilot valve. After loading, the rotating plate 74 rotates in the opposite direction to reset, and the knurled hand screw 13 disengages from the abutment, so that the pressure plate 10 resets to abut the pilot valve, thereby automating the abutment of the pilot valve and improving the continuity and efficiency of the pilot valve test.

[0042] Embodiment 4: A driving unit 73 is disposed on the outside of the push plate 71. The driving unit 73 includes a fixed gear 731. The fixed gear 731 can realize automatic adjustment of the position of the pressure plate 10 by driving the knurled hand screw 13. The outer surface of the fixed gear 731 is fixedly connected to the outer surface of the knurled hand screw 13. The outer surface of the fixed gear 731 is meshed with a rotating gear 732. The fixed gear 731 and the rotating gear 732 are arranged in a large and a small manner. By setting a certain transmission ratio, the adjustment accuracy is improved. The outer surface of the rotating gear 732 is fixedly connected to a driving motor 733. The driving motor 733 is made of a servo motor and is electrically connected to an external control circuit. The appearance of the driving motor 733 The outer surface of the support plate 735 is fixedly connected to the outer surface of the push plate 71, the outer surface of the fixed gear 731 is meshed with a rack 734, the outer surface of the rack 734 is slidably connected with a support plate 735, and the support plate 735 is arranged close to the fixed gear 731 to improve the stability of the connection between the rack 734 and the fixed gear 731, the outer surface of the support plate 735 is fixedly connected to the outer surface of the push plate 71, the outer surface of the rack 734 is fixedly connected to a displacement sensor 736, the displacement sensor 736 is electrically connected to the external control circuit, and the output end follows the synchronous movement of the rack 734 to determine the adjustment size of the pressure plate 10, and the outer surface of the displacement sensor 736 is fixedly connected to the outer surface of the push plate 71.

[0043] In this embodiment, when the position of the pressure plate 10 needs to be adjusted, the output end of the driving motor 733 rotates, and the transmission is performed through the meshing of the rotating gear 732 and the fixed gear 731, so that the knurled hand screw 13 follows the rotation to adjust the position of the pressure plate 10. At the same time, when the fixed gear 731 rotates, the rack 734 follows the synchronous sliding by meshing with it, and pulls the output end of the displacement sensor 736, so that the adjustment size of the position of the pressure plate 10 is controlled by the extension value of the output end of the displacement sensor 736, thereby improving the automation and continuity of the device during use, as well as improving the test efficiency and accuracy.

[0044] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic clamping device for a pilot valve, characterized in that: include: A fixed base (1) for fixing the automatic clamping device of the pilot valve, wherein the fixed base (1) is fixed on a workbench of the automatic test bench for the pilot valve; A dedicated base (2) for the pilot valve, the dedicated base (2) for the pilot valve being fixed to a fixed base by screws, and used to fix the electromagnetic pilot valve to be tested; the dedicated base (2) for the pilot valve and the fixed base (1) are both provided with interconnecting pipes, and a test joint is installed to facilitate the electromagnetic pilot valve test; Clamping blocks (3), the clamping blocks (3) being arranged on both sides of the surface of the pilot valve dedicated base (2) and used for clamping the pilot valve to be tested; Angle cylinder (14), the angle cylinder (14) is arranged on a special base (2) for the pilot valve, and is used for loading and testing the pilot valve by rotating the shaft end; A material picking assembly (4), the material picking assembly (4) being arranged on the shaft end of the rotary cylinder (14) and used for feeding and picking operations when the pilot valve is loaded; A pressure plate (10), the pressure plate (10) being arranged on a special base (2) for the pilot valve and used for limiting and protecting the rear of the pilot valve; A toggle assembly (7) acts on the outside of the pressure plate (10) and abuts against the rear side of pilot valves of different models by toggling the pressure plate (10) to move.

2. The automatic clamping device for a pilot valve according to claim 1, characterized in that: A front plate (5) is fixedly connected to the surface of the pilot valve dedicated base (2), and cylinder seats (6) are fixedly connected to both sides of the surface of the pilot valve dedicated base (2). The outer surfaces of the cylinder seats (6) on both sides are fixedly connected to telescopic cylinders (8). A pressure block (9) is fixedly connected to the output end of the telescopic cylinder (8), and the outer surface of the pressure block (9) is in contact with the outer surface of the pressure plate (10). The body of the pressure plate (10) is threadedly connected with a knurled hand screw (13). The knurled hand screw The outside of (13) is rotatably connected with a tension spring plate (11), the tension spring plate (11) is fixed on the surface of the special base (2) of the pilot valve, the outer surface of the tension spring plate (11) is fixedly connected with a tension spring (12), the tension spring (12) is sleeved on the outside of the screw rod of the knurled hand screw (13), and one end is fixedly connected to the outer surface of the pressure plate (10), the shaft end of the angle cylinder (14) is fixedly connected with a plug pressure plate (15), and a wire pressing assembly (16) is arranged on the plug pressure plate (15).

3. The automatic clamping device for a pilot valve according to claim 1, characterized in that: The material picking assembly (4) comprises a connecting plate (41), wherein the connecting plate (41) is fixedly connected to the shaft end of the angular cylinder (14), a telescopic clamp (42) is fixedly connected to the outer surface of the connecting plate (41), a material box (43) is arranged below the telescopic clamp (42), a slide plate (45) is movably connected to the interior of the material box (43), a spring rod (46) is fixedly connected to the outer surface of the slide plate (45), and the outer surface of the spring rod (46) is fixedly connected to the interior of the material box (43).

4. The automatic clamping device for a pilot valve according to claim 3 is characterized in that: The body of the material box (43) is provided with two through slots (47), and fixed frames (48) are arranged outside the through slots (47) on both sides. The outer surfaces of the fixed frames (48) on both sides are fixedly connected to the outer surface of the material box (43). The outer surface of the fixed frame (48) on one side is highly connected to a push-pull cylinder (49), and the output end of the push-pull cylinder (49) is fixedly connected to a slide column (44), and the outer surface of the slide column (44) is movably connected to the outer surfaces of the fixed frames (48) on both sides, the through slots (47) on both sides, and the inside of the material box (43).

5. The automatic clamping device for a pilot valve according to claim 1, characterized in that: The toggle assembly (7) includes a push plate (71), the outer surface of the push plate (71) is provided with a clamping groove (72), the interior of the clamping groove (72) is movably connected to the screw rod portion of the knurled hand screw (13), the outer surface of the push plate (71) is movably connected to a rotating plate (74), the rotating plate (74) body is provided with a through sliding groove (75), the interior of the sliding groove (75) is movably connected to a pin rod (76), and one end of the pin rod (76) is fixedly connected to the outer surface of the push plate (71).

6. The automatic clamping device for a pilot valve according to claim 5, characterized in that: A telescopic rod (77) is arranged outside the push plate (71), and the outer surface of the telescopic rod (77) is rotatably connected to two rotating racks (78), and the outer surfaces of the two rotating racks (78) are respectively fixedly connected to the outside of the push plate (71) and the angle cylinder (14).

7. The automatic clamping device for a pilot valve according to claim 5, characterized in that: A driving unit (73) is arranged outside the push plate (71), and the driving unit (73) includes a fixed gear (731), the outer surface of the fixed gear (731) is fixedly connected to the outer surface of the knurled hand screw (13), the outer surface of the fixed gear (731) is meshed with a rotating gear (732), the outer surface of the rotating gear (732) is fixedly connected to a driving motor (733), and the outer surface of the driving motor (733) is fixedly connected to the outer surface of the push plate (71).

8. The automatic clamping device for a pilot valve according to claim 7, characterized in that: The outer surface of the fixed gear (731) is meshed with a rack (734), the outer surface of the rack (734) is slidably connected with a support plate (735), the outer surface of the support plate (735) is fixedly connected to the outer surface of the push plate (71), the outer surface of the rack (734) is fixedly connected to a displacement sensor (736), and the outer surface of the displacement sensor (736) is fixedly connected to the outer surface of the push plate (71).

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