A vacuum pump rotor detection device

Abstract

The present invention relates to the field of vacuum pump detection technology, and specifically to a vacuum pump rotor detection device, comprising a base, wherein two left-right symmetrically arranged clamping units are installed on the upper end of the base, the clamping units are used to clamp the rotor and drive the rotor to rotate, a detection unit is distributed in the middle part above the base, a vibration unit for vibrating the rotor is installed on the clamping unit, a matching unit is installed in the middle part of the upper end of the base, and the detection unit is installed on the matching unit; the present invention is used to detect the wear resistance of the rotor, the present invention can apply a constant friction force to the rotor surface, and increase the accuracy of the rotor wear resistance detection result, and at the same time, the present invention can also simulate the situation that the end and the middle of the rotor are subjected to friction during actual work, and the present invention can also continuously vibrate the rotor, and further increase the accuracy of the detection result.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum pump detection, in particular to a vacuum pump rotor detection device. Background Art

[0002] The vacuum pump is mainly composed of a pump body and a rotor. According to the rotor type, the vacuum pump can be divided into a rotary vane vacuum pump, a screw vacuum pump and a Roots vacuum pump. Among them, the Roots vacuum pump generally works in an oil-free state and will not pollute the pumped gas or system. Therefore, it is widely used in occasions that require a clean vacuum environment, such as Figure 8 As shown, the Roots vacuum pump uses two intermeshing rotors, and both rotors are set to a waist-shaped structure. The two rotors rotate to form a continuously changing volume during the operation of the pump, thereby realizing the suction and discharge of gas. Since the rotor is the core structure of the vacuum pump, it is necessary to perform wear resistance testing on the rotor to ensure the service life and sealing performance of the vacuum pump.

[0003] At present, when testing the performance of the Roots vacuum pump rotor, the rotor is usually clamped and fixed by a clamping unit to drive the rotor to rotate, and at the same time, a friction force is applied to the rotor surface through a detection device. Finally, the wear degree of the rotor surface is tested to detect whether the rotor wear resistance is qualified.

[0004] At present, there are the following problems in the wear resistance test of the rotor: 1. Since the Roots vacuum pump rotor is usually a waist-shaped structure, it is impossible to ensure that a constant friction force is applied to the rotor surface, resulting in inaccurate wear resistance test results for the rotor; 2. When the Roots vacuum pump rotor is working, the rotor end is mainly subjected to friction between the casing and the middle of the other rotor, while the middle of the rotor is mainly subjected to friction between the other rotor end. Therefore, the friction time of the end and the middle of the rotor during operation is different. The existing detection method cannot simulate the friction of the rotor during actual work, thereby affecting the quality of the rotor after passing the test; 3. In the actual working process, the rotor may vibrate, and the vibration will accelerate the wear of the rotor, while the existing detection method cannot simulate the vibration of the rotor, thereby further reducing the accuracy of the test results. Summary of the invention

[0005] In order to solve the above technical problems, the present invention adopts the following technical scheme: a vacuum pump rotor detection device, including a base, two clamping units arranged symmetrically on the left and right are installed on the upper end of the base, the clamping units are used to clamp the rotor and drive the rotor to rotate, and a detection unit is distributed in the middle part above the base, and a vibration unit for vibrating the rotor is installed on the clamping unit, and a matching unit is installed in the middle part of the upper end of the base, and the detection unit is installed on the matching unit; the matching unit includes a fixed ring fixedly installed in the middle part of the upper end of the base, and a matching ring is rotatably installed in the fixed ring through a plurality of reset springs, and matching rods are fixedly installed on the front sides of the left and right ends of the matching ring, and the matching rods are used to cooperate with the clamping unit to drive The matching ring rotates periodically, and an arc groove is opened on the upper side of the inside of the matching ring, an arc electric slider assembly is installed in the arc groove, and a connecting rod is installed at the lower end of the arc electric slider assembly; the detection unit includes a top plate fixedly installed at the lower end of the connecting rod, a sliding plate is installed on the front side of the lower end of the top plate for sliding back and forth, and a friction roller is installed on the front side of the lower end of the sliding plate through a pressure mechanism. The pressure mechanism is used to make the friction roller elastically fit on the surface of the rotor, and the pressure mechanism can also drive the friction roller to rotate. The surface of the friction roller is provided with a variety of friction materials evenly arranged in the circumferential direction, and a follow-up mechanism is installed on the rear side of the lower end of the top plate, and the follow-up mechanism is connected to the sliding plate, and the follow-up mechanism is used to automatically adjust the position of the sliding plate according to the surface contour of the rotor.

[0006] Preferably, two guide grooves symmetrically arranged on the left and right are provided above the base, and the clamping unit includes a synchronization block slidably installed in the guide groove on the left and right, an adjustment mechanism for synchronously adjusting the positions of the two synchronization blocks is commonly installed between the two synchronization blocks and the base, vertical plates are fixedly installed on opposite sides of the upper ends of the two synchronization blocks, a rotating plate is rotatably installed on the upper ends of the vertical plates, a plurality of L-shaped clamping rods uniformly arranged circumferentially are distributed on opposite sides of the two rotating plates, a synchronization mechanism for synchronously adjusting the positions of the plurality of clamping rods is commonly installed between the plurality of clamping rods and their corresponding rotating plates, and an active mechanism for driving the rotating plate to rotate is connected between the rotating plate and the vertical plate.

[0007] Preferably, the synchronization mechanism includes a synchronization plate distributed on the side of the rotating plate away from the middle of the base, the synchronization plate is installed with an adjusting screw by threaded cooperation, and the adjusting screw and the rotating plate are rotatably connected, the positions of the outer sides of the synchronization plate corresponding to the clamping rods are hinged with inclined rods, and the end of the inclined rod away from the synchronization plate is inclined toward the direction close to the rotating plate, the end of the inclined rod away from the synchronization plate is hinged with a synchronization rod, and the end of the synchronization rod away from the inclined rod slides through the rotating plate and is fixedly connected to the corresponding clamping rod.

[0008] Preferably, gear rings are fixedly sleeved on the outer sides of the two rotating plates and located on the opposite sides of the two vertical plates, and the active mechanism includes a driving gear meshed under the gear ring, and the side of the driving gear away from the middle of the base is connected to the output shaft of the No. 1 motor fixedly installed on the opposite sides of the two vertical plates by key fitting, and a plurality of circumferentially evenly arranged round rods are fixedly installed on the side of the driving gear away from the middle of the base, and the end of the round rod away from the driving gear is set to a spherical structure.

[0009] Preferably, the vibration unit includes a fixed plate fixedly installed on the opposite sides of the upper ends of the two synchronization blocks, the upper ends of the opposite sides of the two fixed plates are slidably installed with connecting plates through multiple connecting spring rods, vibration rods are fixedly installed on the lower ends of the opposite sides of the two connecting plates, and the end of the vibration rod away from the connecting plate slides left and right through the fixed plate and is arranged in close contact with the vertical plate, a toggle block is fixedly installed on the upper end of the connecting plate, and the rear ends of the opposite sides of the two toggle blocks are arranged as inclined surfaces for cooperating with the round rod to drive the two toggle blocks to move away from each other.

[0010] Preferably, two levers symmetrically arranged up and down are fixedly installed on the outer sides of the two rotating plates and on the opposite sides of the two vertical plates, and the end of the lever away from the rotating plate is set as an elastic telescopic structure, and the end of the telescopic end of the lever away from the vertical plate is fixedly installed with a pressure rod.

[0011] Preferably, arc-shaped plates are distributed at the lower ends of the opposite sides of the two vertical plates, the rear end of the arc-shaped plate is fixedly connected to an L-shaped rod fixedly installed at the lower ends of the opposite sides of the two vertical plates, and the front upper end of the arc-shaped plate is set as an inclined surface for cooperating with the pressure rod to compress the telescopic end of the lever.

[0012] Preferably, a square groove is provided on the rear side of the lower end of the top plate, and the follower mechanism includes an L-shaped clamping plate slidably installed in the square, an extension spring is connected between the rear end of the vertical section of the clamping plate and the square groove, and two fixed blocks symmetrically arranged on the left and right are fixedly installed at the front end of the horizontal section of the clamping plate, and laminating rollers are installed on opposite sides of the two fixed blocks for common rotation.

[0013] Preferably, an active rack is fixedly installed on the left end of the front side of the vertical section of the clamping plate, and a driven rack is fixed on the right end of the rear side of the sliding plate. A changing gear is meshed and installed on opposite sides of the active rack and the driven rack, and the changing gear is connected to a rotating shaft rotatably installed in the middle of the lower end of the top plate by means of a key fit.

[0014] Preferably, the pressurizing mechanism includes a pressurizing plate distributed at the lower end of the rear side of the sliding plate, the front end of the pressurizing plate is connected to the sliding plate for forward and backward sliding via a plurality of limit rods, a threaded rod is rotatably installed at the middle part of the front end of the pressurizing plate via a No. 2 motor, and the threaded rod is connected to the sliding plate via a threaded fit, a U-shaped plate is installed at the rear end of the pressurizing plate via two pressurizing spring rods symmetrically arranged on the left and right, the left and right inner walls of the U-shaped plate are rotatably connected to the friction roller on opposite sides, and the right end of the friction roller is fixedly connected to the output shaft of the No. 3 motor fixedly installed in the U-shaped plate.

[0015] The beneficial effects of the present invention are: 1. The present invention sets a pressure mechanism so that the friction roller applies a certain pressure to the rotor surface, so that the friction roller rubs the rotating rotor surface. At the same time, a follow-up mechanism is set to automatically adjust the position of the sliding plate according to the rotor surface contour, so that the friction roller applies a constant pressure to the rotor surface, so that the friction force on the rotor surface does not change, thereby increasing the accuracy of the detection result.

[0016] 2. When the two ends of the rotor rotate to a horizontal arrangement state, the present invention arranges a lever and a matching rod to cooperate to drive the matching ring to rotate synchronously, so that the matching ring finally drives the friction roller to rotate synchronously through the connecting rod, and arranges an arc-shaped electric slider assembly to drive the friction roller to move back and forth through the connecting rod, so that the friction roller continuously rubs the rotor end, thereby simulating the friction situation of the end and middle part of the rotor during actual work, thereby ensuring the quality of the rotor after passing the inspection.

[0017] 3. The present invention arranges a round rod and a toggle block to cooperate so that the connecting plate drives the vibration rod to continuously vibrate the rotor through the vertical plate, and the vibration frequency of the rotor caused by the vibration rod will increase with the increase of the rotation speed of the driving gear, that is, the faster the rotation speed of the rotor, the faster its vibration frequency, further increasing the accuracy of the test result.

[0018] 4. The present invention drives the friction roller to rotate by the No. 3 motor, and a variety of friction materials are arranged on the surface of the friction roller, so that the corresponding friction material and the rotor surface can be selected to contact according to the actual working state of the rotor, thereby increasing the applicability of the present invention. At the same time, by controlling the No. 3 motor to drive the friction roller to rotate reciprocatingly, the contact position of the friction material between the rotor surface and the friction roller can continuously change, so that the heat generated by the friction on the surface of the friction roller can be dissipated in time, preventing the friction roller from overheating and affecting the wear resistance test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the clamping unit and the vibration unit after a portion of the base is cut away according to the present invention.

[0022] Figure 3 It is a three-dimensional structural schematic diagram of the clamping unit and the vibration unit after the vertical plate and the rotating plate are partially cut away.

[0023] Figure 4 It is a three-dimensional structural schematic diagram of the active mechanism and the vibration unit after a part of the active mechanism is cut away according to the present invention.

[0024] Figure 5 It is a three-dimensional structural schematic diagram of the matching unit and the detection unit after parts of the fixing ring and the matching ring are cut away.

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the detection unit of the present invention.

[0026] Figure 7 It is a three-dimensional structural schematic diagram of the detection unit partial structure after the pressurizing mechanism is partially removed in the present invention.

[0027] Figure 8 It is a schematic diagram of the three-dimensional structure when the two rotors are meshing.

[0028] Figure numerals: 1, base; 11, guide groove; 2, clamping unit; 21, synchronization block; 22, adjustment mechanism; 23, vertical plate; 231, arc plate; 232, L-shaped rod; 24, rotating plate; 241, gear ring; 242, lever; 243, pressure rod; 25, clamping rod; 26, synchronization mechanism; 261, synchronization plate; 262, adjustment screw; 263, inclined rod; 264, synchronization rod; 27, active mechanism; 271, active gear; 272, No. 1 motor; 273, round rod; 3, detection unit; 31, top plate; 32, sliding plate; 321, driven rack; 33, pressurizing mechanism; 331, Pressure plate; 332, limit rod; 333, No. 2 motor; 334, threaded rod; 335, pressure spring rod; 336, U-shaped plate; 34, friction roller; 35, follow-up mechanism; 351, pressing plate; 352, extension spring; 353, fixed block; 354, laminating roller; 355, active rack; 356, changing gear; 4, vibration unit; 41, fixed plate; 42, connecting spring rod; 43, connecting plate; 44, vibration rod; 45, toggle block; 5, matching unit; 51, fixing ring; 52, reset spring; 53, matching ring; 54, matching rod; 55, electric slider assembly; 56, connecting rod. DETAILED DESCRIPTION

[0029] The embodiments described below are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. If no specific techniques or conditions are specified in the embodiments, the techniques or conditions described in the literature in the art or the product instructions shall be followed.

[0030] See also Figure 1 A vacuum pump rotor detection device includes a base 1, two left-right symmetrically arranged clamping units 2 are installed on the upper end of the base 1, the clamping units 2 are used to clamp the rotor and drive the rotor to rotate, a detection unit 3 is distributed in the middle of the upper part of the base 1, a vibration unit 4 for vibrating the rotor is installed on the clamping unit 2, a matching unit 5 is installed in the middle of the upper end of the base 1, and the detection unit 3 is installed on the matching unit 5.

[0031] The present invention is used to detect the wear resistance of the rotor. The present invention can apply a constant friction force to the surface of the rotor to increase the accuracy of the detection result. At the same time, the present invention can also apply friction forces to the end and middle of the rotor for different periods of time to simulate the situation where the rotor is subjected to friction during actual work. The present invention can also continuously vibrate the rotor to further increase the accuracy of the detection result.

[0032] Specifically, the rotor is first placed in the detection unit 3, and the two ends of the rotor are arranged vertically. At the same time, the shaft of the rotor is clamped and fixed by two clamping units 2. Then, the detection unit 3 is controlled to apply a certain pressure to the front surface of the rotor. Finally, the two clamping units 2 are controlled to drive the rotor to rotate counterclockwise, so that the detection unit 3 continuously rubs the rotor surface, and the vibration unit 4 can cooperate with the clamping unit 2 to continuously vibrate the rotor. When the clamping unit 2 drives the two ends of the rotor to rotate to a horizontally arranged state, the clamping unit 2 can cooperate with the matching unit 5 to drive the detection unit 3 to rotate synchronously, and the detection unit 3 is controlled to continuously rub the rotor end. After rubbing the rotor surface for a period of time, the clamping unit 2 is controlled to release the rotor, and then the rotor is taken out of the detection unit 3, and the degree of wear on the rotor surface is detected, and then whether the wear resistance of the rotor is qualified is detected.

[0033] See also Figure 1 and Figure 2 Two guide grooves 11 symmetrically arranged on the left and right are provided above the base 1. The clamping unit 2 includes a synchronization block 21 slidably installed in the guide groove 11. An adjustment mechanism 22 for synchronously adjusting the positions of the two synchronization blocks 21 is installed between the two synchronization blocks 21 and the base 1. Vertical plates 23 are fixedly installed on opposite sides of the upper ends of the two synchronization blocks 21. A rotating plate 24 is rotatably installed on the upper ends of the vertical plates 23. A plurality of L-shaped clamping rods 25 uniformly arranged in the circumferential direction are distributed on opposite sides of the two rotating plates 24. A synchronization mechanism 26 for synchronously adjusting the positions of the plurality of clamping rods 25 is installed between the plurality of clamping rods 25 and their corresponding rotating plates 24. An active mechanism 27 for driving the rotating plate 24 to rotate is connected between the rotating plate 24 and the vertical plate 23.

[0034] It should be noted that the adjustment mechanism 22 in the present invention includes a synchronous screw, which is provided with two threaded sections arranged on the left and right and with opposite rotation directions. The two synchronous blocks 21 are connected to their corresponding threaded sections by threaded cooperation, and the synchronous screw is rotatably connected to the base 1. The right end of the synchronous screw is fixedly connected to the output shaft of the No. 4 motor fixedly installed in the base 1. The synchronous screw is driven to rotate by the No. 4 motor, thereby making the two synchronous blocks 21 move synchronously.

[0035] The clamping unit 2 is used to clamp the rotor and drive the rotor to rotate; specifically, when the rotor is placed in the detection unit 3, the control adjustment mechanism 22 drives the two synchronization blocks 21 to move in a direction approaching each other, so that the synchronization block 21 finally drives its corresponding multiple clamping rods 25 to move in a direction close to the middle of the base 1 through the vertical plate 23, and then controls the synchronization mechanism 26 to drive the multiple clamping rods 25 to move synchronously in a direction approaching each other, so that the multiple clamping rods 25 clamp and fix the shaft of the rotor. When the detection unit 3 applies a certain pressure to the front surface of the rotor, the control active mechanism 27 drives the rotating plate 24 to rotate counterclockwise, so that the rotating plate 24 drives the rotor to rotate through its corresponding multiple clamping rods 25, so that the detection unit 3 can continuously rub the rotor surface. After rubbing the rotor surface for a period of time, the multiple clamping rods 25 are driven to move in a direction away from each other to the initial position by controlling the synchronization mechanism 26, so that the rotor can be taken out.

[0036] See also Figure 2 and Figure 3 The synchronization mechanism 26 includes a synchronization plate 261 distributed on the side of the rotating plate 24 away from the middle of the base 1, the synchronization plate 261 is installed with an adjusting screw 262 by threaded matching, and the adjusting screw 262 is rotatably connected to the rotating plate 24, and the positions of the outer sides of the synchronization plate 261 corresponding to the clamping rod 25 are hinged with inclined rods 263, and the ends of the inclined rods 263 away from the synchronization plate 261 are tilted toward the direction close to the rotating plate 24, and the ends of the inclined rods 263 away from the synchronization plate 261 are hinged with a synchronization rod 264, and the ends of the synchronization rods 264 away from the synchronization plate 261 slide through the rotating plate 24 and are fixedly connected to the corresponding clamping rods 25.

[0037] The synchronization mechanism 26 is used to drive the multiple clamping rods 25 to move synchronously; specifically, by screwing the adjusting screw 262, the synchronization plate 261 is driven to move left and right, so that the synchronization plate 261 drives its corresponding multiple synchronization rods 264 to move synchronously inward and outward through the inclined rod 263, and then the synchronization rod 264 drives the multiple clamping rods 25 to move synchronously inward and outward, so that the clamping rod 25 can clamp or release the shaft of the rotor.

[0038] See also Figure 2 and Figure 3A gear ring 241 is fixedly sleeved on the outer sides of the two rotating plates 24 and located on the opposite sides of the two vertical plates 23. The active mechanism 27 includes a driving gear 271 meshed with the gear ring 241 below. The side of the driving gear 271 away from the middle of the base 1 is connected to the output shaft of a motor 272 fixedly installed on the opposite sides of the two vertical plates 23 by key matching. A plurality of circumferentially evenly arranged round rods 273 are fixedly installed on the side of the driving gear 271 away from the middle of the base 1, and the end of the round rod 273 away from the driving gear 271 is set as a spherical structure.

[0039] See also Figure 1-Figure 4 The vibration unit 4 includes a fixed plate 41 fixedly mounted on the opposite sides of the upper ends of the two synchronization blocks 21, and the upper ends of the opposite sides of the two fixed plates 41 are slidably mounted with a connecting plate 43 through a plurality of connecting spring rods 42, and the lower ends of the opposite sides of the two connecting plates 43 are fixedly mounted with a vibration rod 44, and the end of the vibration rod 44 away from the connecting plate 43 slides left and right through the fixed plate 41 and is arranged in close contact with the vertical plate 23, and a toggle block 45 is fixedly mounted on the upper end of the connecting plate 43, and the rear ends of the opposite sides of the two toggle blocks 45 are arranged as an inclined surface for cooperating with the round rod 273 to drive the two toggle blocks 45 to move in a direction away from each other; wherein, the connecting spring rod 42 has a certain amount of compression at the beginning.

[0040] The active mechanism 27 is used to drive the rotating plate 24 to rotate, and the vibration unit 4 is used to vibrate the rotor; specifically, when the detection unit 3 applies a certain pressure to the front surface of the rotor, the No. 1 motor 272 is controlled to drive the active gear 271 to rotate, so that the active gear 271 drives the rotating plate 24 to rotate through the gear ring 241, and then the rotating plate 24 drives the rotor to rotate through the clamping rod 25. At the same time, the active gear 271 drives the round rod 273 to rotate. When the round rod 273 rotates to the position corresponding to the inclined surface of the toggle block 45, the round rod 273 can cooperate with the inclined surface of the toggle block 45 to drive the connecting plate 43 to move away from the fixed plate 41. The connecting spring rod 42 is moved and compressed, so that the connecting plate 43 drives the vibration rod 44 to move in the direction away from the vertical plate 23. When the round rod 273 and the toggle block 45 are separated, the connecting plate 43 drives the vibration rod 44 to pop out in the direction close to the vertical plate 23 under the action of the connecting spring rod 42, and a plurality of round rods 273 are provided, so that the vertical plate 23 continuously vibrates the rotor through the rotating plate 24 under the action of the vibration rod 44, and the faster the driving gear 271 rotates, the faster the vibration frequency of the rotor by the vibration rod 44, thereby simulating the situation that the faster the rotation speed of the rotor, the faster its vibration frequency, and further increasing the accuracy of the test results.

[0041] See also Figure 1 and Figure 5The mating unit 5 includes a fixed ring 51 fixedly installed in the middle of the upper end of the base 1, and a mating ring 53 is rotatably installed in the fixed ring 51 through a plurality of return springs 52. Mating rods 54 are fixedly installed on the front sides of the left and right ends of the mating ring 53. The mating rods 54 are used to cooperate with the clamping unit 2 to drive the mating ring 53 to rotate periodically. An arc groove is opened on the upper side of the inner part of the mating ring 53, and an arc-shaped electric slider assembly 55 is installed in the arc groove. A connecting rod 56 is installed at the lower end of the arc-shaped electric slider assembly 55.

[0042] See also Figure 1 and Figure 6 The detection unit 3 includes a top plate 31 fixedly mounted on the lower end of the connecting rod 56, a sliding plate 32 is slidably mounted on the front side of the lower end of the top plate 31, a friction roller 34 is mounted on the front side of the lower end of the sliding plate 32 through a pressure mechanism 33, the pressure mechanism 33 is used to make the friction roller 34 elastically fit on the surface of the rotor, and the pressure mechanism 33 can also drive the friction roller 34 to rotate, the surface of the friction roller 34 is provided with a variety of friction materials uniformly arranged in the circumferential direction, a follow-up mechanism 35 is installed on the rear side of the lower end of the top plate 31, and the follow-up mechanism 35 is connected to the sliding plate 32, and the follow-up mechanism 35 is used to automatically adjust the position of the sliding plate 32 according to the surface contour of the rotor.

[0043] See also Figure 1 and Figure 2 Two levers 242 symmetrically arranged up and down are fixedly installed on the outside of the two rotating plates 24 and on the opposite sides of the two vertical plates 23, and the end of the lever 242 away from the rotating plate 24 is set to an elastic telescopic structure, and the end of the telescopic end of the lever 242 away from the vertical plate 23 is fixedly installed with a pressure rod 243; arc-shaped plates 231 are distributed on the lower ends of the opposite sides of the two vertical plates 23, and the rear end of the arc-shaped plate 231 is fixedly connected to an L-shaped rod 232 fixedly installed on the lower ends of the opposite sides of the two vertical plates 23, and the upper end of the front side of the arc-shaped plate 231 is set to cooperate with the pressure rod 243 to compress the inclined surface of the telescopic end of the lever 242.

[0044] It should be noted that the arc-shaped electric slider assembly 55 in the present invention includes an arc-shaped slide rail and an electric arc-shaped slider, wherein the arc-shaped slide rail is fixedly installed on the inner wall of the arc-shaped groove of the mating ring 53, and the lower end of the electric arc-shaped slider is fixedly connected to the connecting rod 56. The electric arc-shaped slider is controlled to drive the connecting rod 56 to reciprocate relative to the mating ring 53 in the arc-shaped groove of the mating ring 53.

[0045] The matching unit 5 is used to drive the detection unit 3 to rotate synchronously with the rotating plate 24 periodically, and the detection unit 3 is used to rub the rotor surface; specifically, before clamping and fixing the rotor, the rotor is first placed between the follower mechanism 35 and the friction roller 34, and the two ends of the rotor are arranged vertically, so that the positions of the two levers 242 are aligned with the two ends of the rotor. When the clamping rod 25 clamps and fixes the rotor, the pressure mechanism 33 is controlled to drive the friction roller 34 to rotate, and then the corresponding friction material is selected to fit the front side of the rotor, and the pressure mechanism 33 is controlled to make the friction roller 34 contact the rotor surface. A certain pressure is applied. When the clamping rod 25 drives the rotor to rotate, the follower mechanism 35 can automatically adjust the position of the sliding plate 32 according to the surface contour of the rotor, so that the friction roller 34 rubs the rotor surface with a constant friction force. Since the friction roller 34 and the rotor surface are in line contact, the friction roller 34 can be driven to reciprocate by controlling the pressure-applying mechanism 33, so that the contact position of a friction material between the rotor surface and the friction roller 34 can continuously change, so that the heat generated by the friction on the surface of the friction roller 34 can be dissipated in time, preventing the friction roller 34 from overheating and affecting the wear resistance test results.

[0046] When the friction roller 34 rubs the middle part of the rotor, the rotor rotates relative to the friction roller 34, so that the friction roller 34 rubs the middle part of the rotor. When the two ends of the rotor rotate to a horizontal arrangement state, the rotating plate 24 drives the two levers 242 to rotate to a front-to-back arrangement state, so that the lever 242 located on the front side can cooperate with the matching rod 54 to drive the matching ring 53 to rotate synchronously, and then the matching ring 53 drives the connecting rod 56 to rotate through the arc-shaped electric slider assembly 55, so that the connecting rod 56 drives the friction roller 34 and the rotor to rotate synchronously through the top plate 31, and then the arc-shaped electric slider assembly 55 is started to drive the connecting rod 56 to continuously reciprocate relative to the matching ring 53 in the arc groove of the matching ring 53, so that the connecting rod 56 drives the friction roller 34 to reciprocate relative to the end of the rotor through the top plate 31, so that the friction roller 34 continuously rubs the end of the rotor, thereby simulating the situation where the end and middle of the rotor are subjected to friction during actual work.

[0047] When the lever 242 drives the pressure rod 243 to rotate to the corresponding position of the arc plate 231, the inclined surface of the arc plate 231 can cooperate with the pressure rod 243 to compress the telescopic end of the lever 242, thereby separating the lever 242 and the matching rod 54, so that the matching ring 53 returns to the initial position under the action of the reset spring 52, and finally drives the friction roller 34 to return to the initial position through the connecting rod 56.

[0048] See also Figure 5 and Figure 6A square groove is provided on the rear side of the lower end of the top plate 31, and the follower mechanism 35 includes a clamping plate 351 of an L-shaped structure slidably installed in the square, and a top extension spring 352 is connected between the rear end of the vertical section of the clamping plate 351 and the square groove, and two fixed blocks 353 arranged symmetrically on the left and right are fixedly installed at the front end of the horizontal section of the clamping plate 351, and a laminating roller 354 is installed on the opposite sides of the two fixed blocks 353 for common rotation; an active rack 355 is fixedly installed on the left end of the front side of the vertical section of the clamping plate 351, and a driven rack 321 is fixed on the right end of the rear side of the sliding plate 32, and a changing gear 356 is installed on the opposite sides of the active rack 355 and the driven rack 321 in meshing with each other, and the changing gear 356 is connected to the rotating shaft rotatably installed in the middle of the lower end of the top plate 31 by key fitting.

[0049] See also Figure 6 and Figure 7 The pressurizing mechanism 33 includes a pressurizing plate 331 distributed at the lower rear end of the sliding plate 32. The front end of the pressurizing plate 331 is connected to the sliding plate 32 for forward and backward sliding via a plurality of limit rods 332. A threaded rod 334 is rotatably installed at the middle part of the front end of the pressurizing plate 331 via a No. 2 motor 333, and the threaded rod 334 is connected to the sliding plate 32 via a threaded fit. A U-shaped plate 336 is installed at the rear end of the pressurizing plate 331 via two pressurizing spring rods 335 symmetrically arranged on the left and right. The opposite sides of the left and right inner walls of the U-shaped plate 336 are rotatably connected to the friction roller 34, and the right end of the friction roller 34 is fixedly connected to the output shaft of the No. 3 motor fixedly installed in the U-shaped plate 336.

[0050] It should be noted that the elastic force of the extension spring 352 in the present invention is much greater than the elastic force of the pressure spring rod 335 .

[0051] The follow-up mechanism 35 is used to automatically adjust the position of the sliding plate 32 according to the surface contour of the rotor; the pressure mechanism 33 is used to make the friction roller 34 apply a certain pressure to the rotor surface; specifically, before clamping and fixing the rotor, manually push the clamping plate 351 backward and compress the extension spring 352, and then place the rotor between the fitting roller 354 and the friction roller 34, so that the clamping plate 351 drives the fitting roller 354 to fit in the middle of the rear side of the rotor through the fixing block 353 under the action of the extension spring 352, and at the same time, the clamping plate 351 drives the changing gear 356 to rotate through the active rack 355, so that the changing gear 356 drives the sliding plate 32 to move synchronously through the driven rack 321, so that the sliding plate 32 finally drives the friction roller 34 to fit in the middle of the front side of the rotor through the threaded rod 334, and when the rotor is clamped and fixed, the threaded rod 334 is driven to rotate by controlling the No. 2 motor 333, and the threaded rod 334 The pressure plate 331 cooperates with the sliding plate 32 to make the pressure plate 331 move to a square away from the sliding plate 32 under the action of the limit rod 332, thereby compressing the pressure spring rod 335, so that the U-shaped plate 336 drives the friction roller 34 to apply a certain force to the rotor surface under the action of the pressure spring rod 335, and the force of the friction roller 34 on the rotor surface can be controlled according to the compression amount of the pressure spring rod 335, and the friction roller 34 is driven to rotate by controlling the No. 3 motor, so that the corresponding friction material on the friction roller 34 contacts the rotor surface, and a friction material of the friction roller 34 is in line contact with the rotor surface, and the friction roller 34 is driven to rotate back and forth by controlling the No. 3 motor, so that the contact position of a friction material on the friction roller 34 and the rotor surface can continuously change, so that the heat generated by the friction on the surface of the friction roller 34 can be dissipated in time, so as to prevent the friction roller 34 from overheating and affecting the wear resistance test result of the rotor.

[0052] See also Figure 8 The rotor has a centrally symmetrical structure. When the rotor rotates, the contact roller 354 can drive the contact plate 351 to move along the surface contour of the rotor under the action of the extension spring 352. At the same time, the contact plate 351 drives the changing gear 356 to rotate through the active rack 355, and then the changing gear 356 drives the sliding plate 32 to move synchronously through the driven rack 321, so that the compression amount of the pressure spring rod 335 will not change, so that the friction roller 34 applies a constant force to the rotor surface.

[0053] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A vacuum pump rotor detection device, comprising a base (1), wherein two clamping units (2) arranged symmetrically on the upper end of the base (1) are installed, wherein the clamping units (2) are used to clamp the rotor and drive the rotor to rotate, and a detection unit (3) is distributed in the middle of the upper part of the base (1), characterized in that: A vibration unit (4) for vibrating the rotor is installed on the clamping unit (2), a matching unit (5) is installed in the middle of the upper end of the base (1), and the detection unit (3) is installed on the matching unit (5); The matching unit (5) comprises a fixing ring (51) fixedly mounted on the middle part of the upper end of the base (1), a matching ring (53) being rotatably mounted in the fixing ring (51) via a plurality of return springs (52), matching rods (54) being fixedly mounted on the front sides of both left and right ends of the matching ring (53), the matching rods (54) being used to cooperate with the clamping unit (2) to drive the matching ring (53) to rotate periodically, an arc-shaped groove being provided on the upper side of the matching ring (53), an arc-shaped electric slider assembly (55) being mounted in the arc-shaped groove, and a connecting rod (56) being mounted on the lower end of the arc-shaped electric slider assembly (55); The detection unit (3) comprises a top plate (31) fixedly mounted on the lower end of the connecting rod (56); a sliding plate (32) is slidably mounted on the front side of the lower end of the top plate (31); a friction roller (34) is mounted on the front side of the lower end of the sliding plate (32) via a pressure mechanism (33); the pressure mechanism (33) is used to make the friction roller (34) elastically fit on the surface of the rotor, and the pressure mechanism (33) can also drive the friction roller (34) to rotate; a plurality of friction materials uniformly arranged in the circumferential direction are arranged on the surface of the friction roller (34); a follower mechanism (35) is mounted on the rear side of the lower end of the top plate (31); the follower mechanism (35) is connected to the sliding plate (32); the follower mechanism (35) is used to automatically adjust the position of the sliding plate (32) according to the surface contour of the rotor.

2. A vacuum pump rotor detection device according to claim 1, characterized in that: Two guide grooves (11) arranged symmetrically on the left and right are provided above the base (1); the clamping unit (2) comprises a synchronous block (21) slidably mounted in the guide groove (11) on the left and right; an adjusting mechanism (22) for synchronously adjusting the positions of the two synchronous blocks (21) is installed between the two synchronous blocks (21) and the base (1); vertical plates (23) are fixedly mounted on opposite sides of the upper ends of the two synchronous blocks (21); a rotating plate (24) is rotatably mounted on the upper ends of the vertical plates (23); a plurality of clamping rods (25) of L-shaped structure uniformly arranged in the circumferential direction are distributed on opposite sides of the two rotating plates (24); a synchronous mechanism (26) for synchronously adjusting the positions of the plurality of clamping rods (25) is installed between the plurality of clamping rods (25) and their corresponding rotating plates (24); and an active mechanism (27) for driving the rotating plate (24) to rotate is connected between the rotating plate (24) and the vertical plate (23).

3. A vacuum pump rotor detection device according to claim 2, characterized in that: The synchronization mechanism (26) comprises a synchronization plate (261) which is distributed on one side of the rotating plate (24) away from the middle of the base (1); the synchronization plate (261) is installed with an adjusting screw (262) by means of threaded engagement, and the adjusting screw (262) and the rotating plate (24) are rotationally connected; a slanting rod (263) is hingedly connected at a position corresponding to the clamping rod (25) on the outer side of the synchronization plate (261); and one end of the slanting rod (263) away from the synchronization plate (261) is tiltedly arranged in a direction close to the rotating plate (24); one end of the slanting rod (263) away from the synchronization plate (261) is hingedly connected to a synchronization rod (264); and one end of the synchronization rod (264) away from the slanting rod (263) slides through the rotating plate (24) and is fixedly connected to the corresponding clamping rod (25).

4. A vacuum pump rotor detection device according to claim 2, characterized in that: A gear ring (241) is fixedly sleeved on the outer sides of the two rotating plates (24) and located on the opposite sides of the two vertical plates (23); the active mechanism (27) comprises an active gear (271) meshed with the lower side of the gear ring (241); a side of the active gear (271) away from the middle of the base (1) is connected to an output shaft of a No. 1 motor (272) fixedly installed on the opposite sides of the two vertical plates (23) by means of a key fit; a plurality of circumferentially evenly arranged round rods (273) are fixedly installed on a side of the active gear (271) away from the middle of the base (1); and an end of the round rod (273) away from the active gear (271) is set as a spherical structure.

5. A vacuum pump rotor detection device according to claim 4, characterized in that: The vibration unit (4) comprises a fixed plate (41) fixedly mounted on the opposite sides of the upper ends of the two synchronization blocks (21); the upper ends of the opposite sides of the two fixed plates (41) are both slidably mounted with a connecting plate (43) via a plurality of connecting spring rods (42); the lower ends of the opposite sides of the two connecting plates (43) are both fixedly mounted with a vibration rod (44); and the end of the vibration rod (44) away from the connecting plate (43) slides left and right through the fixed plate (41) and is arranged in close contact with the vertical plate (23); the upper end of the connecting plate (43) is fixedly mounted with a toggle block (45); the rear ends of the opposite sides of the two toggle blocks (45) are arranged as inclined surfaces for cooperating with the round rod (273) to drive the two toggle blocks (45) to move in a direction away from each other.

6. A vacuum pump rotor detection device according to claim 2, characterized in that: Two levers (242) symmetrically arranged up and down are fixedly installed on the outsides of the two rotating plates (24) and on the opposite sides of the two vertical plates (23), and one end of the lever (242) away from the rotating plate (24) is provided with an elastic telescopic structure, and one end of the telescopic end of the lever (242) away from the vertical plate (23) is fixedly installed with a pressure rod (243).

7. A vacuum pump rotor detection device according to claim 6, characterized in that: The lower ends of the two vertical plates (23) on opposite sides are both provided with arc-shaped plates (231); the rear end of the arc-shaped plates (231) is fixedly connected to an L-shaped rod (232) fixedly mounted on the lower ends of the two vertical plates (23) on opposite sides; the upper end of the front side of the arc-shaped plates (231) is arranged as an inclined surface for cooperating with the pressing rod (243) to compress the telescopic end of the lever (242).

8. A vacuum pump rotor detection device according to claim 1, characterized in that: A square groove is provided at the rear side of the lower end of the top plate (31); the follower mechanism (35) comprises an L-shaped pressing plate (351) slidably mounted in the square; a top extension spring (352) is connected between the rear end of the vertical section of the pressing plate (351) and the square groove; two fixed blocks (353) arranged symmetrically on the left and right are fixedly mounted at the front end of the horizontal section of the pressing plate (351); and a pressing roller (354) is mounted on opposite sides of the two fixed blocks (353) for common rotation.

9. A vacuum pump rotor detection device according to claim 8, characterized in that: A driving rack (355) is fixedly installed at the left end of the front side of the vertical section of the pressing plate (351), and a driven rack (321) is fixedly installed at the right end of the rear side of the sliding plate (32). A direction-changing gear (356) is meshed and installed on the opposite sides of the driving rack (355) and the driven rack (321), and the direction-changing gear (356) is connected to a rotating shaft rotatably installed in the middle of the lower end of the top plate (31) by means of key matching.

10. A vacuum pump rotor detection device according to claim 1, characterized in that: The pressurizing mechanism (33) comprises a pressurizing plate (331) distributed at the lower end of the rear side of the sliding plate (32); the front end of the pressurizing plate (331) is connected to the sliding plate (32) in a forward and backward sliding manner via a plurality of limit rods (332); a threaded rod (334) is rotatably mounted on the middle part of the front end of the pressurizing plate (331) via a No. 2 motor (333); and the threaded rod (334) is connected to the sliding plate (32) via a threaded fit; a U-shaped plate (336) is mounted on the rear end of the pressurizing plate (331) via two pressurizing spring rods (335) symmetrically arranged on the left and right sides; the left and right inner walls of the U-shaped plate (336) are rotatably connected to the friction roller (34); and the right end of the friction roller (34) is fixedly connected to the output shaft of the No. 3 motor fixedly mounted in the U-shaped plate (336).

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