Tool for measuring threaded hole of conductive slip ring

Abstract

The invention discloses a tool for measuring a threaded hole of a conductive slip ring, which belongs to the technical field of measuring equipment and comprises a circular bottom plate, a supporting assembly and a positioning assembly are arranged on the circular bottom plate, and the threaded hole of the conductive slip ring is measured through mutual matching of the supporting assembly and the positioning assembly. Fixing of the conductive slip ring and measurement of the angle of a threaded hole can be completed through simple pressing and adjusting actions, the measurement efficiency is remarkably improved, the supporting assembly can achieve automatic centering and stable clamping of the conductive slip ring, it is ensured that the axis of the conductive slip ring is consistent with the axis of a measurement tool, an accurate reference is provided for subsequent angle measurement, and the measurement precision is improved. The positioning assembly can adapt to threaded holes of different diameters, the axis of the positioning plate and the axis of the threaded hole coincide through automatic adjustment, the measurement accuracy and applicability are effectively improved, displacement in the measurement process can be prevented by arranging the limiting unit, clamping can be rapidly released by pushing the L-shaped push plate, workpiece loading and unloading are facilitated, and the measurement accuracy and applicability are improved. And the convenience of continuous operation is improved.

Description

Technical Field

[0001] This invention relates to the field of measuring equipment technology, and in particular to a tool for measuring the threaded hole of a conductive slip ring. Background Technology

[0002] Conductive slip rings, as a key rotary electrical transmission connector, are widely used in various applications requiring the transmission of electrical signals and power between two relatively rotating structures. They maintain sliding electrical contact between the brushes in the stator and the ring plates in the rotor, thus achieving stable power and signal transmission during continuous rotation. In actual manufacturing and assembly processes, the threaded holes on the conductive slip ring housing or base are often circumferentially distributed, and the included angle between the holes is often non-standard. Traditional measurement methods typically rely on large precision instruments such as coordinate measuring machines (CMMs). While these offer high accuracy, they suffer from high equipment costs, complex operation, long measurement cycles, and high skill requirements for operators, making it difficult to meet the needs of rapid and efficient testing on production sites. Furthermore, some simple measuring tools, although structurally simple, generally suffer from inaccurate positioning, inconvenient readings, and limited applicability, failing to meet the requirements for rapid testing of threaded holes of different specifications while ensuring measurement accuracy. Therefore, this invention provides a tool for measuring the threaded holes of conductive slip rings. Summary of the Invention

[0003] This invention addresses the shortcomings of existing technologies by providing a tool for measuring the threaded holes of conductive slip rings, overcoming the problem of being unable to rapidly detect threaded holes of different specifications while ensuring measurement accuracy.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a tool for measuring the threaded hole of a conductive slip ring, comprising a circular base plate, a support assembly and a positioning assembly on the circular base plate, the support assembly including a circular support plate slidably mounted on the circular base plate, a support spring between the circular base plate and the circular support plate, three adjusting strips on the lower surface of the circular support plate, three strip grooves on the upper surface of the circular base plate, an arc-shaped clamping plate and an adjusting short column fixedly mounted on the adjusting strips, the adjusting short column and the strip grooves being movably connected, a limit unit being provided between the circular support plate and the circular base plate, the positioning assembly including an annular positioning plate, two arc-shaped rotating blocks rotatably mounted on the annular positioning plate, a positioning slide plate slidably mounted on each of the arc-shaped rotating blocks, a circular positioning plate fixedly mounted at the end of the positioning slide plate closest to the axis of the annular positioning plate, three positioning probes movably arranged in a circumferential array on the circular positioning plate, each positioning probe being provided with an unfolding push rod, and a conical push block being provided between the three unfolding push rods.

[0005] Furthermore, three telescopic support rods are arranged in a circumferential array between the circular base plate and the circular support plate. The lower end of the telescopic support rod is fixedly connected to the upper surface of the circular base plate, and the upper end of the telescopic support rod is fixedly connected to the lower surface of the circular support plate. An annular protective shell is fixedly installed on the lower surface of the circular support plate, and an annular protective shell is fixedly installed on the upper surface of the circular base plate. The annular protective shell and the annular protective shell slide together.

[0006] Furthermore, the circular support plate is provided with three strip grooves arranged in a circumferential array. The adjustment strips are slidably installed in the corresponding strip grooves. The three strip grooves are fixedly installed on the circular base plate in a circumferential array. The strip grooves are inclined on the circular base plate. The distance between the end of the strip groove closest to the axis of the circular base plate and the lower surface of the circular base plate is less than the distance between the end of the strip groove farthest from the axis of the circular base plate and the circular base plate.

[0007] Furthermore, the limiting unit includes two limiting ratchet 2s and two limiting ratchet 1s. The two limiting ratchet 2s are symmetrically fixedly installed on the lower surface of the circular support plate. A C-shaped sliding plate is also slidably installed on the circular base plate. The two limiting ratchet 1s are symmetrically fixedly installed on the C-shaped sliding plate. When the limiting ratchet 1s and the corresponding limiting ratchet 2s are engaged, they form a ratchet mechanism. An auxiliary strip is also fixedly installed on the circular base plate. Spring plates are symmetrically arranged between the C-shaped sliding plate and the auxiliary strip. An L-shaped push plate is also fixedly installed on the C-shaped sliding plate. The vertical section of the L-shaped push plate is located outside the annular protective shell 1, and the horizontal section of the L-shaped push plate is slidably engaged with the annular protective shell 1.

[0008] Furthermore, three telescopic support rods are arranged in a circumferential array between the annular positioning plate and the circular base plate. The upper end of the telescopic support rod is fixedly connected to the lower surface of the annular positioning plate, and the lower end of the telescopic support rod is fixedly connected to the upper surface of the circular base plate. The inner diameter of the annular positioning plate is larger than the diameter of the circular support plate, the annular protective shell one, and the annular protective shell two.

[0009] Furthermore, three positioning sliders are slidably mounted in a circumferential array on the circular positioning plate. A return spring is provided between the positioning slider and the circular positioning plate. Positioning probes are fixedly installed on the lower end face of the corresponding positioning slider, and unfolding push rods are fixedly installed on the upper end face of the corresponding positioning slider.

[0010] Furthermore, a positioning electric cylinder is fixedly installed on the circular positioning plate, and a conical push block is fixedly installed at the end of the piston rod of the positioning electric cylinder. The upper end of the unfolding push rod is in contact with the conical surface of the conical push block. The axes of the circular positioning plate, the conical push block, and the positioning electric cylinder on the same positioning slide are all on the same straight line.

[0011] Furthermore, each positioning slide plate is provided with a straight scale line. The extension line of the straight scale line passes through the center point of the annular positioning plate and the center point of the circular positioning plate corresponding to the straight scale line. The annular positioning plate is provided with annular scale lines.

[0012] Furthermore, both the positioning slide and the arc-shaped rotating block are made of transparent material, making it easy to observe the readings after the straight scale lines and the scale lines on the ring positioning plate are aligned.

[0013] The advantages of this invention compared with the prior art are as follows: (1) Through the cooperation of the support component and the positioning component, this invention can complete the fixing of the conductive slip ring and the measurement of the threaded hole angle by simple pressing and adjustment actions, without complicated operation or large equipment, which significantly improves the measurement efficiency. (2) By setting the support component, this invention can realize the automatic centering and stable clamping of the conductive slip ring, ensuring that its axis is consistent with the axis of the measuring tool, providing an accurate reference for subsequent angle measurement. (3) By setting the positioning component, this invention can adapt to threaded holes of different diameters and automatically adjust to make the axis of the positioning plate coincide with the axis of the threaded hole, effectively improving the measurement accuracy and applicability. (4) By setting the limiting unit, this invention can prevent displacement during the measurement process, and the L-shaped push plate can be pushed to quickly release the clamping, which is convenient for loading and unloading of workpieces and improves the convenience of continuous operation. (5) The positioning slide plate of this invention is provided with a straight scale line, and the annular positioning plate is provided with an annular scale line. The two work together to intuitively read the included angle between the two threaded holes, ensuring the reliability of the measurement results. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 This is a schematic diagram of the internal structure of the annular protective shell of the present invention.

[0016] Figure 3 This is a schematic diagram of the structure of the support component of the present invention.

[0017] Figure 4 This is a front view of the internal structure of the annular protective shell of the present invention.

[0018] Figure 5 This is a top view of the overall structure of the present invention.

[0019] Figure 6 This is a schematic diagram of the positioning component of the present invention.

[0020] Figure 7 This is a schematic diagram of the structure of the conical pusher block in this invention.

[0021] Reference numerals: 101-Circular base plate; 102-Circular support plate; 103-Strip groove; 104-Annular protective shell one; 105-Annular protective shell two; 106-Annular positioning plate; 107-Telescopic support rod one; 108-Arc-shaped clamping plate; 109-Positioning slide plate; 110-Auxiliary handle; 111-L-shaped push plate; 112-C-shaped slide plate; 113-Limiting ratchet one; 114-Limiting ratchet two; 11 5-Adjustment strip; 116-Adjustment short column; 117-Strip groove plate; 118-Telescopic support rod II; 119-Support spring; 120-Spring plate; 121-Auxiliary block; 122-Straight scale line; 123-Circular positioning plate; 124-Conical push block; 125-Expanding push rod; 126-Positioning electric cylinder; 127-Arc-shaped rotating block; 128-Reset spring; 129-Positioning probe; 130-Positioning slider. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0023] Example: Reference Figures 1-7 A tool for measuring the threaded hole of a conductive slip ring includes a circular base plate 101. A support assembly is provided on the circular base plate 101. The support assembly includes a circular support plate 102 slidably mounted on the circular base plate 101. Three telescopic support rods 118 are arranged in a circumferential array between the circular base plate 101 and the circular support plate 102. The lower end of the telescopic support rods 118 is fixedly connected to the upper surface of the circular base plate 101, and the upper end of the telescopic support rods 118 is fixedly connected to the lower surface of the circular support plate 102. A support spring 119 is provided between the circular base plate 101 and the circular support plate 102. The two ends of the support spring 119 are fixedly connected to the lower surface of the circular support plate 102 and the upper surface of the circular base plate 101, respectively.

[0024] An annular protective shell 105 is fixedly installed on the lower surface of the circular support plate 102, and an annular protective shell 104 is fixedly installed on the upper surface of the circular base plate 101. The annular protective shell 104 and the annular protective shell 105 are slidably engaged and are used to cover and protect the components between the circular base plate 101 and the circular support plate 102.

[0025] In the initial position, the support spring 119 is not compressed. At this time, the circular support plate 102 is located at the position farthest from the circular base plate 101. At this time, the telescopic support rods 118 are all in the maximum extension state. Pressing the circular support plate 102 downward, the support spring 119 is compressed, the circular support plate 102 moves towards the circular base plate 101, and the annular protective shell 105 moves downward relative to the annular protective shell 104.

[0026] The lower surface of the circular support plate 102 is provided with three adjusting strips 115, and the circular support plate 102 is provided with three strip grooves 103 arranged in a circumferential array. The adjusting strips 115 are slidably installed in the corresponding strip grooves 103. The upper end face of the adjusting strips 115 and the upper surface of the circular support plate 102 are on the same plane. The upper surface of the circular base plate 101 is provided with three strip grooves 117, and the three strip grooves 117 are fixedly installed in a circumferential array. On the circular base plate 101, an adjustment short column 116 is fixedly installed on the lower end of the adjustment strip 115. The adjustment short column 116 is movably connected to the strip groove plate 117. The strip groove plate 117 is inclined on the circular base plate 101. The distance between the end of the strip groove plate 117 closest to the axis of the circular base plate 101 and the lower surface of the circular base plate 101 is less than the distance between the end of the strip groove plate 117 farthest from the axis of the circular base plate 101 and the circular base plate 101.

[0027] In the initial position, when the circular support plate 102 is at its farthest point from the circular base plate 101, the adjusting short column 116, at the end furthest from the axis of the strip groove plate 117 and the annular positioning plate 106, presses down on the circular support plate 102. Under the action of the strip groove plate 117, the adjusting short column 116 moves towards the axis of the circular support plate 102, and the adjusting strip plate 115 moves synchronously. That is, the adjusting strip plate 115 moves towards the axis of the circular support plate 102 within the corresponding strip groove 103. Under the action of the three adjusting short columns 116 and the three strip groove plates 117, the three adjusting strip plates 115 move synchronously towards the axis of the circular support plate 102.

[0028] Arc-shaped clamping plates 108 are fixedly installed on the upper surface of the adjustment strip 115. In the initial position, the three arc-shaped clamping plates 108 are all located at the position farthest from the axis of the circular support plate 102. The end face of the conductive slip ring to be measured is placed on the upper surface of the circular support plate 102, and the circular support plate 102 is manually pressed down to move it downward, so that the three arc-shaped clamping plates 108 on the circular support plate 102 move towards the axis of the circular support plate 102. Finally, the conductive slip ring on the circular support plate 102 is fixed under the action of the three arc-shaped clamping plates 108. At this time, the axis of the conductive slip ring and the axis of the circular support plate 102 are on the same straight line.

[0029] A limiting unit is also provided between the circular support plate 102 and the circular base plate 101. The limiting unit includes two limiting ratchet bars 114 and two limiting ratchet bars 113. The two limiting ratchet bars 114 are symmetrically fixedly installed on the lower surface of the circular support plate 102. A C-shaped sliding plate 112 is also slidably installed on the circular base plate 101. The two limiting ratchet bars 113 are symmetrically fixedly installed on the C-shaped sliding plate 112. When the limiting ratchet bars 113 and the corresponding limiting ratchet bars 114 are engaged, they form a ratchet mechanism. An auxiliary strip 121 is also fixedly installed on the circular base plate 101. A spring sheet 120 is symmetrically arranged between the C-shaped sliding plate 112 and the auxiliary strip 121. An L-shaped push plate 111 is also fixedly installed on the C-shaped sliding plate 112. The vertical section of the L-shaped push plate 111 is located outside the annular protective shell 104. The horizontal section of the L-shaped push plate 111 is slidably engaged with the annular protective shell 104.

[0030] In the initial position, the spring plates 120 do not deform. At this time, the first limiting ratchet 113 is engaged with the corresponding second limiting ratchet 114. After the conductive slip ring is placed on the circular support plate 102, the circular support plate 102 is pushed to move downward. At this time, the second limiting ratchet 114 moves downward relative to the first limiting ratchet 113. When the arc-shaped clamping plate 108 completes the adjustment and fixation of the conductive slip ring position, under the action of the first limiting ratchet 113 and the second limiting ratchet 114, the second limiting ratchet 114 cannot move upward relative to the first limiting ratchet 113, thus locking the position of the arc-shaped clamping plate 108.

[0031] When the arc-shaped clamping plate 108 needs to release the fixation of the conductive slip ring on the circular support plate 102, the L-shaped push plate 111 is pushed to move closer to the axis of the circular base plate 101. The spring plate 120 is compressed, which eventually causes the limiting ratchet 113 to disengage from the limiting ratchet 114. At this time, under the action of the support spring 119, the circular support plate 102 moves away from the circular base plate 101, so that the arc-shaped clamping plate 108 moves away from the axis of the circular support plate 102. That is, the arc-shaped clamping plate 108 releases the fixation of the conductive slip ring on the circular support plate 102 and releases the push of the L-shaped push plate 111, so that the limiting ratchet 113 re-engages with the corresponding limiting ratchet 114 to form a ratchet mechanism.

[0032] A positioning assembly is provided on the circular base plate 101. The positioning assembly includes an annular positioning plate 106. Three telescopic support rods 107 are arranged in a circumferential array between the annular positioning plate 106 and the circular base plate 101. There is friction between the telescopic sections of the telescopic support rods 107, which can maintain any position when the annular positioning plate 106 moves up and down relative to the circular base plate 101. The upper end of the telescopic support rod 107 is fixedly connected to the lower surface of the annular positioning plate 106, and the lower end of the telescopic support rod 107 is fixedly connected to the upper surface of the circular base plate 101. The inner diameter of the annular positioning plate 106 is larger than the diameter of the circular support plate 102, the annular protective shell 104, and the annular protective shell 105.

[0033] Since the inner diameter of the annular positioning plate 106 is larger than the diameter of the circular support plate 102, the annular protective shell 104, and the annular protective shell 105, the positioning assembly is located below the upper surface of the circular support plate 102 in the initial position, which makes it easier to place the conductive slip ring onto the circular support plate 102.

[0034] Two arc-shaped rotating blocks 127 are rotatably mounted on the annular positioning plate 106. Positioning slide plates 109 are slidably mounted on each of the arc-shaped rotating blocks 127. An auxiliary handle 110 is fixedly provided at the end of the positioning slide plate 109 furthest from the annular positioning plate 106. The position of the positioning slide plate 109 relative to the annular positioning plate 106 and the arc-shaped rotating blocks 127 can be manually adjusted by the auxiliary handle 110. A circular positioning plate 123 is fixedly provided at the end of the positioning slide plate 109 closest to the axis of the annular positioning plate 106. Three positioning probes 129 are movably arranged in a circumferential array on the circular positioning plate 123. Each positioning probe 129 is provided with an unfolding push rod 125. A conical push block 124 is provided between the three unfolding push rods 125.

[0035] Three positioning sliders 130 are slidably mounted in a circular array on the circular positioning plate 123. A return spring 128 is provided between each positioning slider 130 and the circular positioning plate 123. In the initial position, the return springs 128 do not deform. At this time, the positioning sliders 130 are all located at the position closest to the axis of the circular positioning plate 123. Positioning probes 129 are fixedly installed on the lower end face of the corresponding positioning sliders 130, and unfolding push rods 125 are fixedly installed on the upper end face of the corresponding positioning sliders 130.

[0036] A positioning electric cylinder 126 is fixedly installed on the circular positioning plate 123. A conical push block 124 is fixedly installed on the piston rod end of the positioning electric cylinder 126. The upper end of the unfolding push rod 125 is in contact with the conical surface of the conical push block 124. The axes of the circular positioning plate 123, the conical push block 124, and the positioning electric cylinder 126 on the same positioning slide plate 109 are all on the same straight line.

[0037] In the initial position, the conical pusher 124 is located at the position furthest from the corresponding circular positioning plate 123. At this time, the unfolding push rods 125 are all located at the position closest to the axis of the corresponding circular positioning plate 123. The positioning electric cylinder 126 is activated to drive the conical pusher 124 to move closer to the corresponding circular positioning plate 123. Under the action of the conical pusher 124, the three corresponding unfolding push rods 125 move away from the axis of the corresponding circular positioning plate 123. The three corresponding positioning sliders 130 move synchronously, and the reset spring 128 is compressed, so that the three corresponding positioning probes 129 move away from the axis of the corresponding circular positioning plate 123.

[0038] After the arc-shaped clamping plate 108 completes the adjustment and fixation of the conductive slip ring on the circular support plate 102, first adjust the position of the annular positioning plate 106 so that it moves to the specified height. Then, manually adjust the auxiliary handle 110 so that the center positions of the circular positioning plates 123 on the two positioning slides 109 are directly above the threaded holes to be measured. Then, press the annular positioning plate 106 so that the positioning probes 129 on the two circular positioning plates 123 are respectively located inside the threaded holes to be measured. Finally, activate the two positioning electric cylinders 126 so that the conical push blocks 124 are both downward. Under the action of the unfolding push rod 125, the three positioning probes 129 on the same circular positioning plate 123 move away from the axis of the circular positioning plate 123. The three positioning probes 129 on the same circular positioning plate 123 contact the inner wall of the corresponding threaded hole. Under the action of the three positioning probes 129, the position of the corresponding circular positioning plate 123 is adjusted, so that the axis of the circular positioning plate 123 and the axis of the corresponding threaded hole are on the same straight line. During the adjustment of the position of the circular positioning plate 123, the positioning slide plate 109 and the arc-shaped rotating block 127 move synchronously.

[0039] The positioning slide plate 109 is provided with straight scale lines 122. The extension of the straight scale line 122 passes through the center point of the annular positioning plate 106 and the center point of the circular positioning plate 123 corresponding to the straight scale line 122. The annular positioning plate 106 is provided with annular scale lines. The positioning slide plate 109 and the arc-shaped rotating block 127 are both made of transparent material, so as to facilitate the observation of the reading after the straight scale line 122 and the scale line on the annular positioning plate 106 are aligned.

[0040] After the positioning probe 129 makes the axis of the circular positioning plate 123 and the axis of the corresponding threaded hole collinear, the angle of the projection of the straight scale line 122 on the two positioning slide plates 109 onto the annular positioning plate 106 can be read, thereby realizing the measurement of the angle between the two threaded holes.

[0041] Working principle: The conductive slip ring to be measured is placed on the upper surface of the circular support plate 102, with the threaded hole to be measured directly above it. Then, the circular support plate 102 is pressed down, causing the three arc-shaped clamping plates 108 to adjust and fix the position of the conductive slip ring. Next, the positions of the annular positioning plate 106 and the positioning slide plate 109 are adjusted so that the positioning probe 129 on the circular positioning plate 123 is located inside the threaded hole to be measured. Then, the positioning electric cylinder 126 is activated to drive the conical push block 124 to move downwards, thus... Three positioning probes 129 adjust the position of the corresponding circular positioning plate 123, so that the axis of the circular positioning plate 123 and the corresponding threaded hole are on the same straight line. When the circular positioning plate 123 moves under the action of the positioning probes 129, the positioning slide plate 109 and the arc-shaped rotating block 127 move synchronously. After the two threaded holes to be measured have completed the automatic adjustment of the position of the positioning slide plate 109, the angle of the projection of the two straight scale lines 122 on the annular positioning plate 106 is read, which is the angle between the two threaded holes being measured.

[0042] This invention is not limited to the specific embodiments described above. Any modifications made by those skilled in the art based on the above concept without creative effort are within the protection scope of this invention.

Claims

1. A tool for measuring the threaded hole of a conductive slip ring, comprising a circular base plate (101), characterized in that: The circular base plate (101) is provided with a support assembly and a positioning assembly. The support assembly includes a circular support plate (102) slidably mounted on the circular base plate (101). A support spring (119) is provided between the circular base plate (101) and the circular support plate (102). Three adjustment strips (115) are provided on the lower surface of the circular support plate (102). Three strip grooves (117) are provided on the upper surface of the circular base plate (101). An arc-shaped clamping plate (108) and an adjustment short column (116) are fixedly mounted on the adjustment strips (115). The adjustment short column (116) and the strip groove (117) are movably connected. The circular support plate (102) A limiting unit is also provided between the circular base plate (101). The positioning component includes an annular positioning plate (106). Two arc-shaped rotating blocks (127) are rotatably installed on the annular positioning plate (106). A positioning slide plate (109) is slidably installed on each of the arc-shaped rotating blocks (127). A circular positioning plate (123) is fixedly provided at the end of the positioning slide plate (109) closest to the axis of the annular positioning plate (106). Three positioning probes (129) are movably arranged in a circular array on the circular positioning plate (123). An unfolding push rod (125) is provided on each of the positioning probes (129). A conical push block (124) is provided between the three unfolding push rods (125).

2. The tool for measuring the threaded hole of a conductive slip ring according to claim 1, characterized in that: Three telescopic support rods (118) are arranged in a circumferential array between the circular base plate (101) and the circular support plate (102). The lower end of the telescopic support rod (118) is fixedly connected to the upper surface of the circular base plate (101), and the upper end of the telescopic support rod (118) is fixedly connected to the lower surface of the circular support plate (102). An annular protective shell (105) is fixedly installed on the lower surface of the circular support plate (102), and an annular protective shell (104) is fixedly installed on the upper surface of the circular base plate (101). The annular protective shell (104) and the annular protective shell (105) are in sliding fit.

3. The tool for measuring the threaded hole of a conductive slip ring according to claim 2, characterized in that: The circular support plate (102) is provided with three strip grooves (103) arranged in a circular array. Adjustment plates (115) are slidably installed in the corresponding strip grooves (103). The three strip groove plates (117) are fixedly installed in a circular array on the circular base plate (101). The strip groove plates (117) are inclined on the circular base plate (101). The distance between the end of the strip groove plate (117) closest to the axis of the circular base plate (101) and the lower surface of the circular base plate (101) is less than the distance between the end of the strip groove plate (117) farthest from the axis of the circular base plate (101) and the circular base plate (101).

4. The tool for measuring the threaded hole of a conductive slip ring according to claim 3, characterized in that: The limiting unit includes two limiting ratchet 2 (114) and two limiting ratchet 1 (113). The two limiting ratchet 2 (114) are symmetrically fixedly installed on the lower surface of the circular support plate (102). A C-shaped sliding plate (112) is also slidably installed on the circular base plate (101). The two limiting ratchet 1 (113) are symmetrically fixedly installed on the C-shaped sliding plate (112). When the limiting ratchet 1 (113) and the corresponding limiting ratchet 2 (114) are engaged, they form a... The ratchet mechanism is further provided with an auxiliary strip (121) fixedly mounted on the circular base plate (101). Spring plates (120) are symmetrically arranged between the C-shaped slide plate (112) and the auxiliary strip (121). An L-shaped push plate (111) is also fixedly mounted on the C-shaped slide plate (112). The vertical section of the L-shaped push plate (111) is located outside the annular protective shell (104), and the horizontal section of the L-shaped push plate (111) slides in cooperation with the annular protective shell (104).

5. A tool for measuring the threaded hole of a conductive slip ring according to claim 1, characterized in that: Three telescopic support rods (107) are arranged in a circumferential array between the annular positioning plate (106) and the circular base plate (101). The upper end of the telescopic support rod (107) is fixedly connected to the lower surface of the annular positioning plate (106), and the lower end of the telescopic support rod (107) is fixedly connected to the upper surface of the circular base plate (101). The inner diameter of the annular positioning plate (106) is larger than the diameter of the circular support plate (102), the annular protective shell (104), and the annular protective shell (105).

6. A tool for measuring the threaded hole of a conductive slip ring according to claim 5, characterized in that: Three positioning sliders (130) are slidably mounted in a circular array on the circular positioning plate (123). A reset spring (128) is provided between the positioning slider (130) and the circular positioning plate (123). Positioning probes (129) are fixedly installed on the lower end face of the corresponding positioning slider (130), and unfolding push rods (125) are fixedly installed on the upper end face of the corresponding positioning slider (130).

7. A tool for measuring the threaded hole of a conductive slip ring according to claim 6, characterized in that: A positioning electric cylinder (126) is fixedly installed on the circular positioning plate (123). The conical push block (124) is fixedly installed at the end of the piston rod of the positioning electric cylinder (126). The upper end of the unfolding push rod (125) is in contact with the conical surface of the conical push block (124). The axes of the circular positioning plate (123), the conical push block (124), and the positioning electric cylinder (126) on the same positioning slide plate (109) are all on the same straight line.

8. A tool for measuring the threaded hole of a conductive slip ring according to claim 7, characterized in that: The positioning slide (109) is provided with a straight scale line (122). The extension line of the straight scale line (122) passes through the center point of the annular positioning plate (106) and the center point of the circular positioning plate (123) corresponding to the straight scale line (122). The annular positioning plate (106) is provided with annular scale lines.

9. A tool for measuring the threaded hole of a conductive slip ring according to claim 8, characterized in that: Both the positioning slide plate (109) and the arc-shaped rotating block (127) are made of transparent material, which makes it easy to observe the reading after the straight scale line (122) and the scale line on the ring positioning plate (106) are aligned.

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