Detection device for vacuum pump rotor

Abstract

The utility model discloses a vacuum pump rotor detection device, which relates to the technical field of vacuum pump detection and comprises a measuring table, a stepping motor is fixedly connected to the middle side of the front end of the measuring table, and an output shaft of the stepping motor is fixedly connected with a bidirectional lead screw through a connecting groove. The left side and the right side of the outer wall of the bidirectional lead screw are in threaded connection with moving blocks at equal intervals, the upper ends of the outer walls of the two moving blocks penetrate to the top of the measuring table and are provided with positioning assemblies, the inner wall of the mounting frame is fixedly connected with a rotating motor, and the opposite faces of the front mounting plate and the rear mounting plate are fixedly connected with limiting sliding rods. An adjusting assembly is arranged on the outer wall of the sliding rail, and a dial indicator is arranged in the adjusting assembly. According to the utility model, the bidirectional lead screw is driven to rotate through the output shaft of the stepping motor, so that the rotor is positioned and fixed through the positioning assemblies on the two sides, and then the clamped and positioned rotor is rotated through the rotating motor, so that detection is carried out.

Description

Technical Field

[0001] This utility model relates to the field of vacuum pump testing technology, specifically to a testing device for a vacuum pump rotor. Background Technology

[0002] Vacuum pumps, such as Roots vacuum pumps, consist of two synchronously rotating, oppositely rotating bladed rotors. Fluid flow is achieved through the pushing action of the rotors' synchronous and counter-rotating motion. Therefore, the quality of the rotors plays a crucial role in the operation of the vacuum pump. Whether a rotor meets standards mainly depends on the concentricity of the shaft and blades, and the standardity of the blade's outer arc. Currently, rotor roundness is typically measured using a three-point method. The rotor is placed in a V-block, rotated one revolution, and the maximum and minimum values ​​are read using a dial indicator during rotation. The difference between these two values ​​is the rotor's roundness.

[0003] The roundness error. The existing technology has the following problems:

[0004] During installation and testing, existing vacuum pump rotors are not convenient for positioning and fixing the connection ends according to the length of the vacuum pump rotor. Secondly, the roundness of the vacuum pump rotor is not easily tested using a dial indicator, and the existing device does not allow for adjustment of the distance between the dial indicator and the outer diameter of the vacuum pump rotor, thus affecting the test results of the roundness of the vacuum pump rotor. Utility Model Content

[0005] This invention provides a detection device for a vacuum pump rotor to solve the problems existing in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A testing device for a vacuum pump rotor includes a measuring platform. A connecting groove is formed on the top center of the measuring platform. A stepper motor is fixedly connected to the front center of the measuring platform. The output shaft of the stepper motor is fixedly connected to a bidirectional lead screw via the connecting groove. The rear end of the outer wall of the bidirectional lead screw extends into the interior of the connecting groove and is rotatably connected to the rear end of the connecting groove. Equally spaced moving blocks are threaded onto the left and right sides of the outer wall of the bidirectional lead screw. The upper ends of the outer walls of both moving blocks extend to the top of the measuring platform and are equipped with positioning components. A mounting bracket is provided at the front end of the positioning component. A rotating motor is fixedly connected to the inner wall of the mounting bracket. Two mounting plates are fixedly connected to the left and right sides of the top of the measuring platform near the connecting groove. Limiting slide rods are fixedly connected to the opposing surfaces of the front and rear mounting plates. A slide rail is fixedly connected to the right side of the top of the measuring platform away from the limiting slide rods. An adjustment component is provided on the outer wall of the slide rail. A dial indicator is installed inside the adjustment component. A control panel is provided at the left end of the measuring platform.

[0008] A further improvement of this utility model is that the positioning component includes a movable plate and a sleeve. A sleeve is fixedly connected to the top of the sleeve, and the interior of the sleeve is connected to the interior of the sleeve. A screw is provided at the top of the sleeve. The lower end of the outer wall of the screw passes through the sleeve and is threadedly connected to the interior of the sleeve. A knob is fixedly connected to the upper end of the screw, and a rubber head with the same inner diameter as the sleeve is fixedly connected to the lower end of the screw. An arc-shaped sponge pad is provided on the lower surface of the inner wall of the sleeve. Airbags are fixedly connected to the left and right sides of the inner wall of the sleeve. Limiting blocks are fixedly connected to the bottom of the left and right ends of the movable plate. Both limiting blocks have through holes extending from front to back.

[0009] A further improvement of this utility model is that the upper end of the moving block is fixedly connected to the middle side of the lower end of the moving plate, and the limiting block is slidably connected to the outer wall of the limiting slide rod through a connecting hole.

[0010] A further improvement of this utility model is that: the rear end of the mounting bracket is fixedly connected to the front end of the front movable plate, a connecting column is fixedly connected to the center of the front end of the front sleeve, and the front end of the outer wall of the connecting column extends through to the left and right ends of the movable plate and is fixedly connected to the output shaft of the rotating motor.

[0011] A further improvement of the present invention is that: a fixing ring is fixedly connected to one end of the movable plate near the sleeve, the inside of the fixing ring is sleeved with one side of the outer wall of the sleeve, an annular groove is formed on the inner wall of the fixing ring, and an annular slider is fixedly connected to one side of the outer wall of the sleeve, and the outer wall of the annular slider is slidably connected to the inner wall of the annular groove.

[0012] A further improvement of this utility model is that the adjustment assembly includes two sliders, two connecting plates, two positioning frames, and a circular sleeve. The lower ends of the two connecting plates are fixedly connected to the upper ends of the two sliders, and the lower middle sides of the two positioning frames are fixedly connected to the upper ends of the two connecting plates. A sliding groove is provided on the lower inner side of each of the two positioning frames. The circular sleeve is disposed on the opposite side of the two positioning frames. A through slot is provided on the top of the circular sleeve. Slider 2 is fixedly connected to the front and rear ends of the outer wall of the circular sleeve. The outer wall of slider 2 extends into the interior of the positioning frame and is slidably connected to the inner wall of the sliding groove. A through slot is provided on the top of the rear positioning frame. A groove is provided at the rear end of the rear positioning frame. A rubber pad is provided on the inner wall of the groove. A U-shaped sliding plate is fixedly connected to the upper end of slider 2 on the rear side, and the vertical outer wall of one side of the U-shaped sliding plate extends through the through slot to the rear end of the positioning frame.

[0013] A further improvement of this utility model is that the inner walls of both sliders are slidably connected to the outer wall of the slide rail, the dial indicator is provided with a circular sleeve, and the measuring rod of the dial indicator passes through the slot to the left side of the circular sleeve.

[0014] A further improvement of this utility model is that: a rod is provided vertically near the rear end of the positioning frame of the U-shaped slide, a clamping plate is fixedly connected to the rear end of the rod, the rear end of the outer wall of the rod extends through to the front end of the U-shaped slide vertically and is fixedly connected to a pressure plate, a spring is sleeved on the outer wall of the rod, the rear end of the spring is fixedly connected to the front surface of the clamping plate, the front end of the spring is fixedly connected to the vertical surface of the U-shaped slide, and the front end of the pressure plate overlaps with the surface of the rubber pad.

[0015] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0016] 1. This utility model provides a detection device for a vacuum pump rotor. It employs a stepper motor, a bidirectional lead screw, a moving block, a positioning component, a mounting bracket, a rotating motor, and a limit slide bar. The output shaft of the stepper motor drives the bidirectional lead screw to rotate, causing the moving block to move the positioning component along the bidirectional lead screw. This allows the rotor to be positioned and fixed by the positioning components on both sides. The rotating motor then rotates the clamped and positioned rotor for detection. This solves the problem that existing vacuum pump rotor installation and testing methods are not convenient for positioning and fixing the connection ends according to the length of the vacuum pump rotor, achieving the beneficial effect of facilitating the positioning and fixing of vacuum pumps of different lengths.

[0017] 2. This utility model provides a detection device for a vacuum pump rotor. It employs a sliding rail, a dial indicator, and an adjustment assembly. By placing the dial indicator within a circular sleeve in the adjustment assembly, and adjusting the distance of the dial indicator left and right according to the outer diameter of the vacuum pump rotor, this invention solves the problem that existing devices are inconvenient for adjusting the distance between the dial indicator and the rotor based on the outer diameter of the vacuum pump rotor, thus affecting the detection results. This invention achieves the beneficial effect of facilitating the adjustment of the distance between the dial indicator and the rotor based on the outer diameter of the vacuum pump rotor, thereby improving the detection results. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the detection device for the vacuum pump rotor of this utility model;

[0019] Figure 2 This is a three-dimensional structural diagram of the positioning component of this utility model;

[0020] Figure 3This is a partial cross-sectional view of the positioning component of this utility model.

[0021] Figure 4 This is a three-dimensional structural diagram of the adjustment component of this utility model;

[0022] Figure 5 This is a partially enlarged schematic diagram of the A-dimensional structure of this utility model.

[0023] In the diagram: 1. Measuring platform; 2. Connecting groove; 3. Stepper motor; 4. Bidirectional lead screw; 5. Moving block; 6. Positioning assembly; 61. Moving plate; 610. Fixing collar; 6101. Annular groove; 62. Sleeve; 621. Connecting column; 622. Annular slider; 63. Sleeve; 64. Screw; 65. Knob; 66. Rubber head; 67. Arc-shaped sponge pad; 68. Airbag; 69. Limiting block; 690. Connecting hole; 7. Mounting bracket; 8. 9. Rotary motor; 91. Adjustment assembly; 92. Slider 1; 93. Connecting plate; 94. Positioning frame; 95. Slide groove; 96. Connecting groove; 97. Connecting groove; 98. Groove; 99. Circular sleeve; 90. Slot; 91. Slider 2; 90. Rubber pad; 91. U-shaped slide plate; 92. Insert rod; 93. Card plate; 94. Pressure plate; 95. Spring; 10. Dial indicator; 11. Slide rail; 12. Mounting plate; 13. Limiting slide rod; 14. Control panel. Detailed Implementation

[0024] To make the technical means, creative features, objectives, and effects of this utility model easier to understand, the following describes this utility model in conjunction with specific embodiments:

[0025] like Figure 1 As shown, this utility model provides a testing device for a vacuum pump rotor, including a measuring platform 1. A connecting groove 2 is provided on the top center side of the measuring platform 1. A stepper motor 3 is fixedly connected to the front center side of the measuring platform 1. The output shaft of the stepper motor 3 is fixedly connected to a bidirectional lead screw 4 through the connecting groove 2. The rear end of the outer wall of the bidirectional lead screw 4 penetrates into the interior of the connecting groove 2 and is rotatably connected to the rear end of the connecting groove 2. Equally spaced moving blocks 5 are threaded onto the left and right sides of the outer wall of the bidirectional lead screw 4. The upper ends of the outer walls of both moving blocks 5 penetrate to the top of the measuring platform 1. The measuring platform 1 is equipped with a positioning component 6. A mounting bracket 7 is provided at the front end of the front positioning component 6. A rotating motor 8 is fixedly connected to the inner wall of the mounting bracket 7. Two mounting plates 12 are fixedly connected to the left and right sides of the top of the measuring platform 1 near the connecting groove 2. Limiting slide rods 13 are fixedly connected to the opposite surfaces of the front and rear mounting plates 12. A slide rail 11 is fixedly connected to the right side of the top of the measuring platform 1 away from the limiting slide rods 13. An adjustment component 9 is provided on the outer wall of the slide rail 11. A dial indicator 10 is provided inside the adjustment component 9. A control panel 14 is provided at the left end of the measuring platform 1.

[0026] The system includes a stepper motor 3, a bidirectional lead screw 4, a moving block 5, a positioning component 6, a rotary motor 8, an adjusting component 9, a dial indicator 10, and a slide rail 11. The stepper motor 3, the bidirectional lead screw 4, the moving block 5, and the positioning component 6 work together to clamp and fix the vacuum pump rotor according to its length. The adjusting component 9 and the slide rail 11 work together to adjust the distance between the measuring rod of the dial indicator 10 and the outer wall of the rotor after the dial indicator 10 is installed.

[0027] like Figure 2 As shown, this utility model provides a technical solution for a vacuum pump rotor detection device: the positioning component 6 includes a movable plate 61 and a sleeve 62. A sleeve 63 is fixedly connected to the top of the sleeve 62, and the interior of the sleeve 63 is in communication with the interior of the sleeve 62. A screw 64 is provided on the top of the sleeve 63. The lower end of the outer wall of the screw 64 passes through the sleeve 63 and enters the interior of the sleeve 62, and the two are threadedly connected. A knob 65 is fixedly connected to the upper end of the screw 64, and a rubber head 66 with the same inner diameter as the sleeve 63 is fixedly connected to the lower end of the screw 64. By rotating the screw 64, the rubber head 66 moves downward through the interior of the sleeve 63 into the interior of the sleeve 62, fixing the upper end face of the rotor. An arc-shaped sponge is provided on the lower surface of the inner wall of the sleeve 62. Airbags 68 are fixedly connected to the left and right sides of the inner wall of the sleeve 62, respectively. By setting the arc-shaped sponge pad 67 and airbags 68 on the inner wall of the sleeve 62, the friction between the sleeve 62 and the outer end face of the rotor is increased, while avoiding scratches on the surface of the rotor during rotation. Limiting blocks 69 are fixedly connected to the bottom of the left and right ends of the moving plate 61, respectively. Both limiting blocks 69 have through holes 690. The upper end of the moving block 5 is fixedly connected to the middle of the lower end of the moving plate 61. The limiting blocks 69 are slidably connected to the outer wall of the limiting slide rod 13 through the through holes 690. The through holes 690 slide back and forth along the outer wall of the limiting slide rod 13, thereby limiting the movement trajectory of the moving plate 61.

[0028] like Figure 3As shown, this utility model provides a technical solution for a vacuum pump rotor detection device: the rear end of the mounting bracket 7 is fixedly connected to the front end of the front moving plate 61, a connecting post 621 is fixedly connected to the center of the front end of the front sleeve 62, the front end of the outer wall of the connecting post 621 extends through to the left and right ends of the moving plate 61 and is fixedly connected to the output shaft of the rotating motor 8, a fixing ring 610 is fixedly connected to one end of the moving plate 61 near the sleeve 62, the inside of the fixing ring 610 is sleeved with one side of the outer wall of the sleeve 62, an annular groove 6101 is opened on the inner wall of the fixing ring 610, an annular slider 622 is fixedly connected to one side of the outer wall of the sleeve 62, the outer wall of the annular slider 622 is slidably connected to the inner wall of the annular groove 6101, the output shaft of the rotating motor 8 drives the sleeve 62 to rotate through the connecting post 621, so that the annular slider 622 on the sleeve 62 slides along the annular groove 6101, improving the stability of the rotation of the sleeve 62.

[0029] like Figure 4 As shown, this utility model provides a technical solution for a vacuum pump rotor detection device: the adjusting component 9 includes two sliders 91, two connecting plates 92, two positioning frames 93, and a circular sleeve 94. The lower ends of the two connecting plates 92 are respectively fixedly connected to the upper ends of the two sliders 91, and the lower middle sides of the two positioning frames 93 are respectively fixedly connected to the upper ends of the two connecting plates 92. A sliding groove 930 is provided on the lower inner side of each of the two positioning frames 93. The circular sleeve 94 is located on the opposite side of the two positioning frames 93. A through groove 940 is provided on the top of the circular sleeve 94. Slider 95 is fixedly connected to the front and rear ends of the outer wall of the circular sleeve 94. The outer wall of slider 95 extends into the interior of the positioning frame 93 and slides against the inner wall of the sliding groove 930. The slider 95... The movable circular ferrule 94 slides left and right within the slide groove 930 to adjust the distance between the measuring rod of the dial indicator 10 and the outer diameter of the rotor. The top of the rear positioning frame 93 has a through groove 931, and the rear end of the rear positioning frame 93 has a groove 932. The inner wall of the groove 932 is provided with a rubber pad 96. The upper end of the rear slider 2 95 is fixedly connected to a U-shaped slide plate 97, and the vertical outer wall of one side of the U-shaped slide plate 97 passes through the through groove 931 to the rear end of the positioning frame 93. The inner walls of the two sliders 1 91 are slidably connected to the outer wall of the slide rail 11. The sliders 1 91 slide back and forth on the slide rail 11 to adjust their position. The dial indicator 10 is provided with the interior of the circular ferrule 94, and the measuring rod of the dial indicator 10 passes through the ferrule 940 to the left side of the circular ferrule 94.

[0030] like Figure 5As shown, this utility model provides a technical solution for a vacuum pump rotor detection device: A rod 98 is vertically arranged on the U-shaped slide plate 97 near the rear end of the positioning frame 93. A clamping plate 981 is fixedly connected to the rear end of the rod 98. The rear end of the outer wall of the rod 98 extends to the front end of the U-shaped slide plate 97 in the vertical direction and is fixedly connected to a pressure plate 982. A spring 99 is sleeved on the outer wall of the rod 98. The rear end of the spring 99 is fixedly connected to the front surface of the clamping plate 981. The front end of the spring 99 is fixedly connected to the vertical surface of the U-shaped slide plate 97. The front end of the pressure plate 982 overlaps with the surface of the rubber pad 96. The U-shaped slide plate 97 slides along the connecting groove 931. The elasticity of the spring 99 presses the pressure plate 982 onto the surface of the rubber pad 96, thus fixing the dial indicator 10.

[0031] The working principle of this vacuum pump rotor detection device will be explained in detail below.

[0032] like Figure 1-5 As shown, when testing the vacuum pump rotor, the testing device is connected to the power supply. First, according to the length of the vacuum pump rotor to be tested, the stepper motor 3 is started. The output shaft of the stepper motor 3 drives the bidirectional lead screw 4 to rotate, so that when the bidirectional lead screw 4 rotates, it drives the front and rear moving plates 61 to move through the moving block 5. This causes the limiting block 69 on the moving plate 61 to slide along the limiting slide rod 13 through the connecting hole 690, causing the front and rear sleeves 62 to move closer together. During the movement, both ends of the vacuum pump rotor are inserted into the sleeves 62 respectively. Then, the stepper motor 3 is stopped, so that the arc-shaped sponge pad 67 and the air bags 68 on both sides are pressed and fitted against the rotor end face. Then, the screw 64 is rotated by the knob 65, so that the rubber head 66 moves downward to the upper end face of the rotor for pressing and fixing, thereby completing the clamping and positioning of the vacuum pump rotor. Then, the dial indicator 10 is placed in the circular ferrule 94, and the two slides are connected by the connecting plate 92. Block 91 moves along slide rail 11 to the outer diameter of vacuum pump rotor. Then, the insert rod 98 is pulled outward by clamp plate 981, causing pressure plate 982 to separate from the surface of rubber pad 96. Then, the circular clamp 94 is driven to slide left or right along slide groove 930 by U-shaped slide plate 97 and slider 95, so that the measuring rod of dial indicator 10 is pressed against the outer wall of rotor. The elasticity of spring 99 is used to press pressure plate 982 against the surface of rubber pad 96, thereby fixing dial indicator 10. Then, by starting the rotating motor 8, the output shaft of rotating motor 8 drives the front sleeve 62 to rotate through connecting column 621, so that the front and rear sleeves 62 slide along the inner wall of annular groove 6101 through annular slider 622, causing vacuum pump rotor to rotate in a circle. During the rotation, the maximum and minimum degrees are measured by the measuring rod of dial indicator 10. By calculating the absolute value of the degree difference, the roundness measurement result of vacuum pump rotor is completed.

[0033] The specific types and structures of the stepper motor 3, rotary motor 8, and dial indicator 10 used are all existing products, and the specific circuit connection structure and control relationship of the dial indicator 10 are also existing technologies, which will not be elaborated on here.

[0034] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A detection device for a vacuum pump rotor, comprising a measuring platform (1), characterized in that: A connecting groove (2) is provided on the top center side of the measuring platform (1). A stepper motor (3) is fixedly connected to the front center side of the measuring platform (1). The output shaft of the stepper motor (3) is fixedly connected to a bidirectional lead screw (4) through the connecting groove (2). The rear end of the outer wall of the bidirectional lead screw (4) extends into the interior of the connecting groove (2) and is rotatably connected to the rear end of the connecting groove (2). The left and right sides of the outer wall of the bidirectional lead screw (4) are respectively threaded with equally spaced moving blocks (5). The upper ends of the outer walls of the two moving blocks (5) extend to the top of the measuring platform (1) and are provided with positioning components (6). The positioning components (6) on the front side... The front end is provided with a mounting bracket (7), and a rotating motor (8) is fixedly connected to the inner wall of the mounting bracket (7). Two mounting plates (12) are fixedly connected to the left and right sides of the top of the measuring platform (1) near the connecting groove (2). Limiting slide rods (13) are fixedly connected to the opposite surfaces of the front and rear mounting plates (12). A slide rail (11) is fixedly connected to the right side of the top of the measuring platform (1) away from the limiting slide rod (13). An adjustment component (9) is provided on the outer wall of the slide rail (11). A dial indicator (10) is provided inside the adjustment component (9). A control panel (14) is provided on the left end of the measuring platform (1).

2. The detection device for a vacuum pump rotor according to claim 1, characterized in that: The positioning component (6) includes a movable plate (61) and a sleeve (62). A sleeve (63) is fixedly connected to the top of the sleeve (62). The interior of the sleeve (63) is connected to the interior of the sleeve (62). A screw (64) is provided at the top of the sleeve (63). The lower end of the outer wall of the screw (64) passes through the sleeve (63) into the interior of the sleeve (62) and is threaded together. A knob (65) is fixedly connected to the upper end of the screw (64). A rubber head (66) with the same inner diameter as the sleeve (63) is fixedly connected to the lower end of the screw (64). An arc-shaped sponge pad (67) is provided on the lower surface of the inner wall of the sleeve (62). Airbags (68) are fixedly connected to the left and right sides of the inner wall of the sleeve (62). Limiting blocks (69) are fixedly connected to the bottom of the left and right ends of the movable plate (61). Both limiting blocks (69) have through holes (690) that pass through the front and back.

3. The detection device for a vacuum pump rotor according to claim 2, characterized in that: The upper end of the moving block (5) is fixedly connected to the middle side of the lower end of the moving plate (61), and the limiting block (69) is slidably connected to the outer wall of the limiting slide rod (13) through the connecting hole (690).

4. The detection device for a vacuum pump rotor according to claim 2, characterized in that: The rear end of the mounting bracket (7) is fixedly connected to the front end of the front moving plate (61). A connecting post (621) is fixedly connected at the center of the front end of the sleeve (62). The front end of the outer wall of the connecting post (621) extends through to the left and right ends of the moving plate (61) and is fixedly connected to the output shaft of the rotating motor (8).

5. The detection device for a vacuum pump rotor according to claim 4, characterized in that: The movable plate (61) is fixedly connected to a fixed collar (610) at one end near the sleeve (62). The inside of the fixed collar (610) is sleeved with one side of the outer wall of the sleeve (62). An annular groove (6101) is opened on the inner wall of the fixed collar (610). An annular slider (622) is fixedly connected to one side of the outer wall of the sleeve (62). The outer wall of the annular slider (622) is slidably connected to the inner wall of the annular groove (6101).

6. The detection device for a vacuum pump rotor according to claim 1, characterized in that: The adjustment assembly (9) includes two sliders (91), two connecting plates (92), two positioning frames (93), and a circular retainer (94). The lower ends of the two connecting plates (92) are fixedly connected to the upper ends of the two sliders (91), and the lower middle sides of the two positioning frames (93) are fixedly connected to the upper ends of the two connecting plates (92). The lower sides of the interior of each of the two positioning frames (93) are provided with a sliding groove (930). The circular retainer (94) is located on the opposite side of the two positioning frames (93). The top of the circular retainer (94) is provided with a through groove (940). The front and rear ends of the outer wall are respectively fixedly connected to slider two (95). The outer wall of slider two (95) penetrates into the interior of the positioning frame (93) and is slidably connected to the inner wall of the slide groove (930). The top of the positioning frame (93) on the rear side is provided with a through groove (931) that runs through the inside and outside. The rear end of the positioning frame (93) on the rear side is provided with a groove (932). The inner wall of the groove (932) is provided with a rubber pad (96). The upper end of slider two (95) on the rear side is fixedly connected to a U-shaped slide plate (97). The outer wall of the U-shaped slide plate (97) on one side extends through the through groove (931) to the rear end of the positioning frame (93).

7. The detection device for a vacuum pump rotor according to claim 6, characterized in that: The inner walls of both sliders (91) are slidably connected to the outer wall of the slide rail (11). The dial indicator (10) is provided with the interior of a circular sleeve (94). The measuring rod of the dial indicator (10) passes through the slot (940) to the left side of the circular sleeve (94).

8. The detection device for a vacuum pump rotor according to claim 6, characterized in that: The U-shaped slide (97) has a vertically arranged insert rod (98) near the rear end of the positioning frame (93). The rear end of the insert rod (98) is fixedly connected to a clamping plate (981). The rear end of the outer wall of the insert rod (98) extends to the front end of the U-shaped slide (97) in the vertical direction and is fixedly connected to a pressure plate (982). The outer wall of the insert rod (98) is fitted with a spring (99). The rear end of the spring (99) is fixedly connected to the front surface of the clamping plate (981). The front end of the spring (99) is fixedly connected to the vertical surface of the U-shaped slide (97). The front end of the pressure plate (982) overlaps with the surface of the rubber pad (96).

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