Hand wheel reducing clamp for valve screwing and adjusting method of hand wheel reducing clamp

Abstract

The invention discloses a hand wheel reducing clamp for valve screwing and an adjusting method of the hand wheel reducing clamp, and relates to the technical field of machines. The device comprises circular supporting legs, a workbench is fixedly connected to the tops of the circular supporting legs, a rotating motor is fixedly connected to the bottom of the workbench, a clamping disc is fixedly connected to an output shaft of the rotating motor, a notch is formed in the top of the clamping disc, a sliding rod is slidably connected into the notch, and a clamping device is fixedly connected to the top of the sliding rod. The rotating force of a reciprocating screw rod driven by a three-phase asynchronous motor is matched with a strip-shaped fixing block, the three-phase asynchronous motor, the reciprocating screw rod, a moving plate, a sliding groove, an L-shaped limiting rod, an L-shaped connecting strip, a connecting rod and other assemblies in the adjusting device, and the adjusting effect of the connecting rod and the strip-shaped connecting strip is achieved; and therefore, the L-shaped connecting strip and the connecting rod drive the clamping device to be adjusted, the clamping device can be adjusted according to different sizes of the hand wheel, and the adjusting effect is achieved.

Description

Technical Field

[0001] The invention belongs to the field of mechanical technology, and in particular relates to a hand wheel diameter reducing fixture for valve screwing and an adjustment method thereof. Background Art

[0002] During the installation, maintenance or commissioning of valves, it is often necessary to use a handwheel to rotate, tighten or loosen the valve. Due to differences in valve specifications, types, installation locations and external environments, the diameter and rotation force of the handwheel may need to be adjusted to ensure smooth operation and valve sealing performance. Traditional valve handwheels are mostly manual tools of fixed sizes, which cannot be flexibly adjusted according to different valve specifications. Therefore, when faced with valves of different diameters or specifications, operators often need to choose appropriate tools based on experience, or use different auxiliary tools to adapt and adjust the handwheel. Traditional handwheels lack versatility and adaptability, especially when it is necessary to finely control the rotation torque and adjust the rotation range, which often leads to problems of inefficiency and safety hazards.

[0003] According to the disclosure, a variable diameter clamp for a drilling machine (Announcement No.: CN 114273940 A) includes a base plate, a clamping mechanism, an adjusting mechanism and a pushing mechanism, wherein the clamping mechanism is arranged on the top of the base plate; in the present invention, the clamping assembly is arranged to be used for clamping materials, and the same clamp can be used to clamp multiple specifications, which can not only be used on a large scale for standard parts and general parts, but also reduce non-standard customization, facilitate operation and provide production efficiency, and the adjusting mechanism can be arranged to adjust the angle of the material during the clamping process or during the processing process, so as to facilitate drilling work at different angles according to the needs of the operator, so that it has the diversity of drilling, and the pushing mechanism can be used to adjust the front and rear positions of the clamp to facilitate better drilling work, and can be used to adjust the appropriate position of materials of different thicknesses, thereby increasing its convenience and applicability, but the invention cooperates with each other through the base plate and the clamping mechanism and other components, making it difficult for him to adjust the clamping assembly to adapt to things of different sizes, which needs to be improved. Summary of the invention

[0004] The object of the present invention is to provide a handwheel reducing clamp for valve screwing and an adjustment method thereof, wherein the rotational force of the reciprocating screw driven by a three-phase asynchronous motor cooperates with the components such as the bar-shaped fixed block, the three-phase asynchronous motor, the reciprocating screw, the movable plate, the slide groove, the L-shaped limit rod, the L-shaped connecting strip and the connecting rod inside the adjustment device to achieve the adjustment function of the connecting rod and the bar connecting strip, so that the L-shaped connecting strip and the connecting rod drive the clamp to be adjusted, so that the clamp can be adjusted according to the different sizes of the handwheel, thereby achieving the adjustment effect and solving the existing problems.

[0005] To solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention relates to a handwheel diameter-changing clamp for valve screwing and an adjustment method thereof, comprising a circular supporting leg, the top of the circular supporting leg is fixedly connected to a workbench, the bottom of the workbench is fixedly connected to a rotating motor, the output shaft of the rotating motor is fixedly connected to a clamping disk, the top of the clamping disk is provided with a notch, a sliding rod is slidably connected in the notch, a clamper is fixedly connected to the top of the sliding rod, and an adjustment device is arranged on the top of the clamping disk; the adjustment device comprises a strip-shaped fixed block, the strip-shaped fixed block is fixedly connected to the top of the clamping disk, the outer surface of the strip-shaped fixed block is fixedly connected to a three-phase asynchronous motor, the output shaft of the three-phase asynchronous motor is fixedly connected to a reciprocating screw, the outer surface of the reciprocating screw is threadedly connected to a moving plate, and the above-mentioned design is conducive to the three-phase asynchronous motor driving the reciprocating screw to rotate, and the reciprocating screw driving the moving plate to move.

[0007] Furthermore, a slide groove is provided on the top of the clamping plate, and one end of an L-shaped limiting rod is fixedly connected to the outer surface of the movable plate, and the end of the L-shaped limiting rod away from the slide groove is slidably connected in the slide groove. The above design is conducive to the movable plate being limited by the L-shaped limiting rod.

[0008] Furthermore, an L-shaped connecting strip is fixedly connected to the outer surface of the movable plate, a connecting rod is fixedly connected to the outer surface of the L-shaped connecting strip, and one end of the connecting rod away from the L-shaped connecting strip is fixedly connected to the outer surface of the clamp. The above design is conducive to the movable plate driving the L-shaped connecting strip to move, and the L-shaped connecting strip driving the connecting rod to move.

[0009] Furthermore, a lubrication device is provided on the top of the clamping plate, and the lubrication device includes a lubrication box, and the lubrication box is fixedly connected to the top of the clamping plate. An oil pump is fixedly connected inside the lubrication box. The above design is conducive to the lubrication box supporting the oil pump to work.

[0010] Furthermore, an L-shaped oil delivery rod is fixedly connected to the outer surface of the lubrication box, an oil outlet plate is fixedly connected to the outer surface of the L-shaped oil delivery rod, and a push switch is arranged on the outer surface of the lubrication box. The above design is conducive to the lubrication box supporting the push switch to work.

[0011] Furthermore, an L-shaped touch rod is fixedly connected to the outer surface of the L-shaped limit rod, and the push switch is located on the movement track of the L-shaped touch rod. The above design is conducive to the L-shaped limit rod driving the L-shaped touch rod to move.

[0012] Furthermore, a cleaning device is provided at the bottom of the clamp, and the cleaning device includes a strip rod, which is fixedly connected to the bottom of the clamp, and the bottom of the strip rod is rotatably connected to an electrically controlled telescopic brush plate. The above design is conducive to the strip rod supporting the electrically controlled telescopic brush plate to work.

[0013] Furthermore, a circular support plate is fixedly connected to the top of the workbench, and a rotating rod is rotatably connected to the top of the circular support plate. The above design is conducive to the workbench supporting the circular support plate to work.

[0014] Furthermore, a rope is fixedly connected to the outer surface of the rotating rod, and one end of the rope away from the rotating rod is fixedly connected to the telescopic end of the electrically controlled telescopic brush plate. The above design is conducive to the rotating rod driving the rope to rotate, and the rope drives the electrically controlled telescopic brush plate to work.

[0015] A method for adjusting a handwheel diameter-changing fixture for valve screwing, comprising the following steps:

[0016] Step 1: First, the three-phase asynchronous motor starts, which drives the reciprocating screw to move. The movement of the reciprocating screw will drive the moving plate to move. The movement of the moving plate will drive the L-shaped connecting strip to move. The movement of the L-shaped connecting strip will drive the connecting rod to move. The movement of the connecting rod will drive the clamp to move and stop after moving to the appropriate position.

[0017] Step 2: The L-shaped limit rod will drive the L-shaped touch rod to move during the movement, and the movement of the L-shaped touch rod will touch the push switch. After the push switch is touched, the oil pump starts to pump the lubricating oil in the lubrication box, and the oil pump pumps the lubricating oil to the L-shaped oil delivery rod, and the L-shaped oil delivery rod transports the lubricating oil to the oil delivery plate, and the oil delivery plate sprays the lubricating oil into the slot.

[0018] Step 3: When the clamp moves, it will drive the bar to move, the movement of the bar will drive the electric telescopic brush plate to move, the movement of the electric telescopic brush plate will clean the workbench, the movement of the electric telescopic brush plate will drive the rope to move, the movement of the rope will drive the rotating rod to rotate on the circular support plate, and the rotation of the rope will drive the electric telescopic brush plate to rotate.

[0019] The present invention has the following beneficial effects:

[0020] 1. The present invention realizes the adjustment function of the connecting rod and the strip connecting rod by driving the rotational force of the reciprocating screw rod through the three-phase asynchronous motor and cooperating with the components such as the bar-shaped fixed block, the three-phase asynchronous motor, the reciprocating screw rod, the moving plate, the slide groove, the L-shaped limit rod, the L-shaped connecting strip and the connecting rod inside the adjusting device, so that the L-shaped connecting strip and the connecting rod drive the clamp to be adjusted, so that the clamp can be adjusted according to the different sizes of the hand wheel, thereby achieving the adjustment effect.

[0021] 2. The present invention uses the L-shaped limit rod to drive the L-shaped touch rod to move, and the lubrication box, oil pump, L-shaped oil delivery rod, oil outlet plate, push switch and L-shaped touch rod and other components inside the lubrication device cooperate with each other, so as to realize the lubrication of the oil outlet plate and the L-shaped oil delivery rod, so that the oil outlet plate can spray the notch and the slide rod to avoid rust due to long-term use, thereby achieving the lubrication effect.

[0022] 3. The present invention drives the moving force of the strip rod through the clamp and cooperates with the strip rod, electric-controlled telescopic brush plate, circular support plate, rotating rod and rope components inside the cleaning device, thereby realizing the cleaning function of the electric-controlled telescopic brush plate and rope, so that the electric-controlled telescopic brush plate cleans the lubricating oil on the workbench and achieves the cleaning effect.

[0023] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the three-dimensional overall structure of the present invention;

[0026] Figure 2 A bottom view of the three-dimensional overall structure of the present invention;

[0027] Figure 3 It is a schematic diagram of the three-dimensional overall structure of the regulating device of the present invention;

[0028] Figure 4 For the present invention Figure 3 A three-dimensional enlarged schematic diagram of the overall structure at point A;

[0029] Figure 5 For the present invention Figure 3 A three-dimensional enlarged schematic diagram of the overall structure at B;

[0030] Figure 6 It is a schematic diagram of the three-dimensional overall structure of the lubrication device of the present invention;

[0031] Figure 7 For the present invention Figure 6 A three-dimensional enlarged schematic diagram of the overall structure at C;

[0032] Figure 8 It is a schematic diagram of the three-dimensional overall structure of the cleaning device of the present invention.

[0033] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0034] 1. Round support leg; 2. Workbench; 3. Rotating motor; 4. Clamping plate; 5. Notch; 6. Slide rod; 7. Clamp; 8. Adjustment device; 81. Bar fixing block; 82. Three-phase asynchronous motor; 83. Reciprocating screw rod; 84. Moving plate; 85. Slide groove; 86. L-shaped limit rod; 87. L-shaped connecting strip; 88. Connecting rod; 9. Lubricating device; 91. Lubrication box; 92. Oil pump; 93. L-shaped oil delivery rod; 94. Oil outlet plate; 95. Press switch; 96. L-shaped touch rod; 10. Cleaning device; 100. Bar rod; 101. Electric telescopic brush plate; 102. Round support plate; 103. Rotating rod; 104. Rope. DETAILED DESCRIPTION

[0035] 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.

[0036] See also Figure 1-8 The present invention is a handwheel diameter reducing clamp for valve screwing, comprising a circular supporting leg 1, a workbench 2 is fixedly connected to the top of the circular supporting leg 1, a rotating motor 3 is fixedly connected to the bottom of the workbench 2, a clamping plate 4 is fixedly connected to the output shaft of the rotating motor 3, a notch 5 is provided on the top of the clamping plate 4, a slide rod 6 is slidably connected in the notch 5, a clamper 7 is fixedly connected to the top of the slide rod 6, and an adjusting device 8 is arranged on the top of the clamping plate 4; the adjusting device 8 comprises a bar-shaped fixed block 81, the bar-shaped fixed block 81 is fixedly connected to the top of the clamping plate 4, a three-phase asynchronous motor 82 is fixedly connected to the outer surface of the bar-shaped fixed block 81, a reciprocating screw 83 is fixedly connected to the output shaft of the three-phase asynchronous motor 82, and a moving plate 84 is threadedly connected to the outer surface of the reciprocating screw 83, and the above-mentioned design is conducive to the three-phase asynchronous motor 82 driving the reciprocating screw 83 to rotate, and the reciprocating screw 83 drives the moving plate 84 to move.

[0037] A slide groove 85 is set on the top of the clamping plate 4, and one end of an L-shaped limiting rod 86 is fixedly connected to the outer surface of the movable plate 84. The end of the L-shaped limiting rod 86 away from the slide groove 85 is slidably connected in the slide groove 85. The above design is conducive to the movable plate 84 being limited by the L-shaped limiting rod 86.

[0038] An L-shaped connecting strip 87 is fixedly connected to the outer surface of the movable plate 84, and a connecting rod 88 is fixedly connected to the outer surface of the L-shaped connecting strip 87. One end of the connecting rod 88 away from the L-shaped connecting strip 87 is fixedly connected to the outer surface of the clamp 7. The above design is conducive to the movable plate 84 driving the L-shaped connecting strip 87 to move, and the L-shaped connecting strip 87 drives the connecting rod 88 to move.

[0039] A lubrication device 9 is provided on the top of the clamping plate 4. The lubrication device 9 includes a lubrication box 91. The lubrication box 91 is fixedly connected to the top of the clamping plate 4. An oil pump 92 is fixedly connected inside the lubrication box 91. The above design is conducive to the lubrication box 91 supporting the oil pump 92 to work.

[0040] An L-shaped oil delivery rod 93 is fixedly connected to the outer surface of the lubrication box 91, an oil outlet plate 94 is fixedly connected to the outer surface of the L-shaped oil delivery rod 93, and a push switch 95 is arranged on the outer surface of the lubrication box 91. The above design is conducive to the lubrication box 91 supporting the push switch 95 to work.

[0041] An L-shaped touch rod 96 is fixedly connected to the outer surface of the L-shaped limit rod 86 , and the push switch 95 is located on the movement trajectory of the L-shaped touch rod 96 . The above design is conducive to the L-shaped limit rod 86 driving the L-shaped touch rod 96 to move.

[0042] A cleaning device 10 is provided at the bottom of the clamp 7, and the cleaning device 10 includes a strip rod 100, which is fixedly connected to the bottom of the clamp 7, and an electrically controlled telescopic brush plate 101 is rotatably connected to the bottom of the strip rod 100. The above design is conducive to the strip rod 100 supporting the electrically controlled telescopic brush plate 101 to work.

[0043] A circular support plate 102 is fixedly connected to the top of the workbench 2, and a rotating rod 103 is rotatably connected to the top of the circular support plate 102. The above design is conducive to the workbench 2 supporting the circular support plate 102 to work.

[0044] A rope 104 is fixedly connected to the outer surface of the rotating rod 103, and one end of the rope 104 away from the rotating rod 103 is fixedly connected to the telescopic end of the electrically controlled telescopic brush plate 101. The above design is conducive to the rotating rod 103 driving the rope 104 to rotate, and the rope 104 drives the electrically controlled telescopic brush plate 101 to work.

[0045] A method for adjusting a handwheel diameter-changing fixture for valve screwing, comprising the following steps:

[0046] Step 1: First, the three-phase asynchronous motor 82 starts to start, and the three-phase asynchronous motor 82 starts to drive the reciprocating screw 83 to move. The movement of the reciprocating screw 83 will drive the moving plate 84 to move. The movement of the moving plate 84 will drive the L-shaped connecting strip 87 to move. The movement of the L-shaped connecting strip 87 will drive the connecting rod 88 to move. The movement of the connecting rod 88 will drive the clamp 7 to move and stop after moving to the appropriate position.

[0047] Step 2: The L-shaped limit rod 86 will drive the L-shaped touch rod 96 to move during the movement. The movement of the L-shaped touch rod 96 will touch the push switch 95. After the push switch 95 is touched, the oil pump 92 starts to pump the lubricating oil in the lubrication box 91. The oil pump 92 pumps the lubricating oil to the L-shaped oil delivery rod 93. The L-shaped oil delivery rod 93 transports the lubricating oil to the oil outlet plate 94, and the oil outlet plate 94 sprays the lubricating oil into the slot 5.

[0048] Step three: when the clamp 7 moves, it will drive the strip rod 100 to move, the movement of the strip rod 100 will drive the electric telescopic brush plate 101 to move, the movement of the electric telescopic brush plate 101 will clean the workbench 2, the movement of the electric telescopic brush plate 101 will drive the rope 104 to move, the movement of the rope 104 will drive the rotating rod 103 to rotate on the circular support plate 102, and the rotation of the rope 104 will drive the electric telescopic brush plate 101 to rotate.

[0049] A specific application of this embodiment is: the user puts the hand wheel that needs to be screwed on the valve into the clamp 7, and the three-phase asynchronous motor 82 starts to start, and the three-phase asynchronous motor 82 starts to drive the reciprocating screw 83 to move, and the movement of the reciprocating screw 83 drives the moving plate 84 to move, and the movement of the moving plate 84 drives the L-shaped connecting strip 87 to move, and the movement of the L-shaped connecting strip 87 drives the connecting rod 88 to move, and the movement of the connecting rod 88 drives the clamp 7 to move, and stops after moving to a suitable position, and the clamp 7 is clamped. The hand wheel is clamped by the device 7, and then the motor 3 is rotated to start rotating, the motor 3 drives the clamping plate 4 to rotate, and the rotation of the clamping plate 4 drives the clamping device 7 to rotate, so that the L-shaped connecting strip 87 and the connecting rod 88 drive the clamping device 7 to adjust, so that the clamping device 7 can be adjusted according to the different sizes of the hand wheel. The sliding rod 6 will rust in the notch 5 after long-term use. At this time, the L-shaped limit rod 86 will drive the L-shaped touch rod 96 to move during the movement, and the movement of the L-shaped touch rod 96 will touch the press switch 95 After the push switch 95 is touched, the oil pump 92 starts to pump the lubricating oil in the lubrication box 91, and the oil pump 92 pumps the lubricating oil to the L-shaped oil delivery rod 93, and the L-shaped oil delivery rod 93 delivers the lubricating oil to the oil outlet plate 94, and the oil outlet plate 94 sprays the lubricating oil on the slot 5, so that the oil outlet plate 94 sprays the slot 5 and the slide bar 6 to avoid rusting due to long-term use. After the lubricating oil is sprayed, there will be excess residue of the lubricating oil flowing from the clamping plate 4 to the workbench 2. At this time, the clamp 7 will drive the bar when moving. The rod 100 moves, and the movement of the strip rod 100 drives the electric-controlled telescopic brush plate 101 to move, and the electric-controlled telescopic brush plate 101 moves downward. The movement of the electric-controlled telescopic brush plate 101 cleans the workbench 2, and the movement of the electric-controlled telescopic brush plate 101 drives the rope 104 to move. The movement of the rope 104 drives the rotating rod 103 to rotate on the circular support plate 102. The rotation of the rope 104 drives the electric-controlled telescopic brush plate 101 to rotate, so that the electric-controlled telescopic brush plate 101 cleans the lubricating oil on the workbench 2.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0051] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A hand wheel reducing fixture for valve tightening, comprising a circular support leg (1), characterized in that: The top of the circular support leg (1) is fixedly connected to a workbench (2), the bottom of the workbench (2) is fixedly connected to a rotating motor (3), the output shaft of the rotating motor (3) is fixedly connected to a clamping disk (4), a notch (5) is provided on the top of the clamping disk (4), a slide rod (6) is slidably connected in the notch (5), a clamp (7) is fixedly connected to the top of the slide rod (6), and an adjusting device (8) is provided on the top of the clamping disk (4); The adjusting device (8) comprises a strip-shaped fixing block (81), the strip-shaped fixing block (81) is fixedly connected to the top of the clamping plate (4), a three-phase asynchronous motor (82) is fixedly connected to the outer surface of the strip-shaped fixing block (81), a reciprocating screw (83) is fixedly connected to the output shaft of the three-phase asynchronous motor (82), and a moving plate (84) is threadedly connected to the outer surface of the reciprocating screw (83).

2. A hand wheel diameter reducing fixture for valve screwing according to claim 1, characterized in that: A slide groove (85) is provided on the top of the clamping plate (4); one end of an L-shaped limiting rod (86) is fixedly connected to the outer surface of the movable plate (84); and one end of the L-shaped limiting rod (86) away from the slide groove (85) is slidably connected in the slide groove (85).

3. A hand wheel diameter reducing fixture for valve screwing according to claim 2, characterized in that: The outer surface of the movable plate (84) is fixedly connected to an L-shaped connecting strip (87), the outer surface of the L-shaped connecting strip (87) is fixedly connected to a connecting rod (88), and one end of the connecting rod (88) away from the L-shaped connecting strip (87) is fixedly connected to the outer surface of the clamp (7).

4. A hand wheel diameter reducing fixture for valve screwing according to claim 3, characterized in that: A lubrication device (9) is provided on the top of the clamping plate (4), and the lubrication device (9) comprises a lubrication box (91). The lubrication box (91) is fixedly connected to the top of the clamping plate (4), and an oil pump (92) is fixedly connected inside the lubrication box (91).

5. A hand wheel diameter reducing fixture for valve screwing according to claim 4, characterized in that: An L-shaped oil delivery rod (93) is fixedly connected to the outer surface of the lubrication box (91), an oil outlet plate (94) is fixedly connected to the outer surface of the L-shaped oil delivery rod (93), and a push switch (95) is provided on the outer surface of the lubrication box (91).

6. A hand wheel diameter reducing fixture for valve screwing according to claim 5, characterized in that: An L-shaped touch rod (96) is fixedly connected to the outer surface of the L-shaped limit rod (86), and the push switch (95) is located on the movement track of the L-shaped touch rod (96).

7. A hand wheel diameter reducing fixture for valve tightening according to claim 6, characterized in that: A cleaning device (10) is provided at the bottom of the clamp (7), and the cleaning device (10) comprises a strip rod (100), the strip rod (100) is fixedly connected to the bottom of the clamp (7), and the bottom of the strip rod (100) is rotatably connected to an electrically controlled telescopic brush plate (101).

8. The hand wheel reducing fixture for valve tightening according to claim 6, characterized in that: A circular support plate (102) is fixedly connected to the top of the workbench (2), and a rotating rod (103) is rotatably connected to the top of the circular support plate (102).

9. The hand wheel diameter reducing fixture for valve screwing according to claim 6, characterized in that: A rope (104) is fixedly connected to the outer surface of the rotating rod (103), and one end of the rope (104) away from the rotating rod (103) is fixedly connected to the telescopic end of the electrically controlled telescopic brush plate (101).

10. A method for adjusting a hand wheel diameter reducing fixture for valve screwing according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: First, the three-phase asynchronous motor (82) starts to start, and the three-phase asynchronous motor (82) starts to drive the reciprocating screw rod (83) to move, and the movement of the reciprocating screw rod (83) drives the moving plate (84) to move, and the movement of the moving plate (84) drives the L-shaped connecting strip (87) to move, and the movement of the L-shaped connecting strip (87) drives the connecting rod (88) to move, and the movement of the connecting rod (88) drives the clamp (7) to move, and stops after moving to a suitable position. Step 2: The L-shaped limit rod (86) drives the L-shaped touch rod (96) to move during the movement, and the L-shaped touch rod (96) moves to touch the push switch (95). After the push switch (95) is touched, the oil pump (92) starts to pump the lubricating oil in the lubrication box (91), and the oil pump (92) pumps the lubricating oil to the L-shaped oil delivery rod (93). The L-shaped oil delivery rod (93) delivers the lubricating oil to the oil outlet plate (94), and the oil outlet plate (94) sprays the lubricating oil into the slot (5). Step 3: When the clamp (7) moves, it will drive the strip rod (100) to move, and the movement of the strip rod (100) will drive the electric-controlled telescopic brush plate (101) to move, and the movement of the electric-controlled telescopic brush plate (101) will clean the workbench (2), and the movement of the electric-controlled telescopic brush plate (101) will drive the rope (104) to move, and the movement of the rope (104) will drive the rotating rod (103) to rotate on the circular support plate (102), and the rotation of the rope (104) will drive the electric-controlled telescopic brush plate (101) to rotate.

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