Motor rotor test tool

Abstract

The utility model discloses a motor rotor testing tool, which relates to the technical field of motor rotor testing and comprises a bottom plate, a driving mechanism, a clamping assembly, a bidirectional telescopic mechanism and movable supporting assemblies which are transversely and slidably mounted on two sides of the bottom plate. And supporting plates are fixedly mounted on the inner side and the outer side of the top of the movable frame correspondingly. According to the motor rotor testing tool, the two rotating wheels are used as supporting and driving mechanisms of the motor rotor, and the fixed cylinder, the connecting rod, the rotating wheels and the displacement sensor are arranged in a matched manner, so that stable support can be provided for the motor rotor, and jumping of the motor rotor is not limited; therefore, the jerk value of the motor rotor in the rotation process can be accurately measured, the dynamic balance test result is more accurate, and the performance and the service life of the motor can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motor rotor testing, in particular to a motor rotor testing tool. Background Art

[0002] In the Chinese utility model patent application number: CN 202222801052.1, there is disclosed a motor rotor dynamic balancing test device, the structure includes a T-slot, a movable frame, a movable plate, and a positioning screw, the position of the movable plate is adjusted and positioned, so that the movable frame is placed in a suitable position to meet the length of the shaft body and ensure the stable clamping of the workpiece to be tested; the matching plate, the adjusting bolt, and the clamping arc plate are adjusted and clamped according to the shaft body with different diameters. The motor rotor dynamic balancing test device is installed by threading the adjusting bolt on the matching plate, and the lower end of the adjusting bolt is rotated to install the clamping arc plate, and the rotation of the adjusting bolt drives the clamping arc plate to press down to adapt to the clamping of the shaft body with different shaft diameters; however, by rotating the bolt to drive multiple clamping arc plates to fix the shaft body, not only the operation is complicated, but also it is difficult to make the shaft body of the motor rotor concentric with the installation cylinder, thereby affecting the test results. In addition, fixing the shaft body by the clamping arc plate will also limit the beating of the motor rotor during rotation, so that the beating of the motor rotor cannot be accurately measured.

[0003] Therefore, it is necessary to propose a motor rotor testing tool to solve the above problems. Utility Model Content

[0004] Technical problem to be solved: The purpose of the utility model is to provide a motor rotor testing tool to solve the problem that the existing motor rotor dynamic balancing test device proposed in the above-mentioned background technology drives multiple clamping arc plates to fix the shaft body by rotating bolts, which is not only complicated to operate, but also difficult to make the shaft body of the motor rotor concentric with the mounting tube, thereby affecting the test results. In addition, fixing the shaft body by clamping arc plates will also limit the vibration of the motor rotor during rotation, thereby failing to accurately measure the vibration of the motor rotor.

[0005] Technical solution: To achieve the above purpose, the utility model is implemented through the following technical solutions: a motor rotor testing fixture, including a base plate, a driving mechanism, a clamping assembly, a two-way telescopic mechanism and a movable support assembly installed on both sides of the base plate along the transverse sliding direction, the movable support assembly includes a movable frame installed on the base plate along the transverse sliding direction and fixedly connected to the output end of the two-way telescopic mechanism, support plates are fixedly installed on the inner and outer sides of the top of the movable frame, two rotating wheels are installed between the two support plates along the longitudinal interval for rotation, and the two rotating wheels in one of the movable support assemblies are both connected to the driving mechanism in a transmission manner, and the driving mechanism can synchronously drive the two rotating wheels to rotate in the same direction, thereby driving the motor rotor to rotate; the A fixed plate is fixedly installed on the top of the outer support plate, and a sliding groove is opened on the fixed plate. A moving block is installed in the sliding groove along the vertical sliding, and a top bead is fixedly installed on the inner side of the moving block; a clamping frame is provided above the rotating wheel, one end of the clamping frame is hinged to the moving frame, and the other end is clamped with the moving frame through a clamping assembly, and a fixed cylinder is fixedly installed at the bottom of the clamping frame in the enclosed area of ​​the two rotating wheels, both ends of the fixed cylinder are sealed and a slide plate is installed vertically inside, a displacement sensor is provided in the fixed cylinder above the slide plate, an external movable sleeve of the displacement sensor is provided with a top spring, and the output end of the displacement sensor is fixedly connected to the slide plate, and a connecting rod is fixedly installed at the bottom of the slide plate, and the other end of the connecting rod passes through the fixed cylinder and is rotatably installed with a rotating wheel.

[0006] Preferably, the clamping assembly includes two connecting plates fixedly mounted on the inner and outer sides of the movable frame, and sockets are provided on the two connecting plates and the clamping frame. A connecting tube with sealed ends is fixedly mounted on the outer connecting plate, and the connecting tube is concentrically arranged with the socket. A sliding rod is axially slidably mounted inside the connecting tube, and one end of the sliding rod extends out of the connecting tube away from the connecting plate and is fixedly mounted with a pull ring, and a block and a spring are sequentially mounted on the upper edge of the sliding rod in the connecting tube from the inside to the outside in a transverse direction.

[0007] Preferably, the bidirectional telescopic mechanism includes a driving box fixedly mounted on the base plate, a rotating shaft rotatably mounted in the driving box, both ends of the rotating shaft respectively pass through the driving box and are fixedly mounted with screws, the rotation directions of the two screws are opposite, the two movable frames are respectively threadedly connected to the screws on adjacent sides, a driven gear is mounted on the rotating shaft, a driving motor is fixedly mounted on the bottom of the driving box, a driving gear is mounted on the output shaft of the driving motor, and the driven gear is meshed with the driving gear for transmission.

[0008] Preferably, the driving mechanism comprises a transmission box, a pulley and a motor, the rotating shafts of the two rotating wheels and the output shaft of the motor both extend into the transmission box and are fitted with pulleys, and two adjacent pulleys are connected by a transmission belt.

[0009] Preferably, an insert block with a top surface tilted downward is fixedly mounted on one end of the slide rod close to the connecting plate, and the insert block is adapted to the insert hole.

[0010] Beneficial effect: Compared with the prior art, the utility model provides a motor rotor testing tool, which has a unique structure and is easy to use. The tool utilizes two rotating wheels as the support and driving mechanism of the motor rotor, and utilizes the coordinated arrangement of a fixed cylinder, a connecting rod, a rotating wheel and a displacement sensor. It can provide stable support for the motor rotor without limiting the vibration of the motor rotor, thereby accurately measuring the vibration amount of the motor rotor during rotation, making the result of the dynamic balancing test more accurate, which helps to improve the performance and life of the motor.

[0011] Through the design of a two-way telescopic mechanism, the tooling can adapt to motor rotors of different lengths. This flexibility means that the tooling can be used to test motor rotors of various models and sizes, increasing the scope of use and value of the tooling. In addition, the motor rotor is fixed by a clamping frame and a clamping assembly. This design reduces the time and complexity of test preparation, facilitates the rapid installation and unloading of the motor rotor, and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional front view schematic diagram of the structure of the utility model;

[0013] Figure 2 It is a three-dimensional side view schematic diagram of the structure of the utility model;

[0014] Figure 3 It is a three-dimensional cross-sectional schematic diagram of the structure of the utility model;

[0015] Figure 4 It is a cross-sectional schematic diagram of the connecting tube structure of the utility model;

[0016] Figure 5 It is a cross-sectional schematic diagram of the transmission box structure of the utility model;

[0017] Figure 6 For this utility model Figure 3 A magnified schematic diagram of the structure of the middle A area;

[0018] Figure 7 For this utility model Figure 3 A magnified schematic diagram of the structure of region B in the middle.

[0019] In the figure: 1, bottom plate; 2, moving frame; 3, rotating wheel; 4, pressing frame; 5, fixed cylinder; 6, slide plate; 7, displacement sensor; 8, connecting rod; 9, rotating wheel; 10, fixed plate; 11, moving block; 12, top ball; 13, connecting cylinder; 14, sliding rod; 15, stopper; 16, spring; 17, pull ring; 18, support plate; 19, transmission box; 20, pulley; 21, transmission belt; 22, motor; 23, drive box; 24, rotating shaft; 25, driven gear; 26, driving motor; 27, driving gear; 28, connecting plate. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Embodiment 1: This embodiment 1 provides a motor rotor test fixture, which is directly improved on the existing motor rotor dynamic balance test device and has a unique structure. Please refer to Figure 1-7 As shown, it includes a base plate 1, a driving mechanism 23, a clamping assembly, a two-way telescopic mechanism and a movable support assembly installed on both sides of the two-way telescopic mechanism along a transverse sliding manner. The movable support assembly includes a movable frame 2 installed on the base plate 1 along a transverse sliding manner and fixedly connected to the output end of the two-way telescopic mechanism. Support plates 18 are fixedly installed on both inner and outer sides of the top of the movable frame 2. Two rotating wheels 3 are installed between the two support plates 18 along a longitudinal interval for rotation, and the two rotating wheels 3 in one of the mobile support assemblies are both connected to the driving mechanism in a transmission manner. The driving mechanism can synchronously drive the two rotating wheels 3 to rotate in the same direction, thereby driving the motor rotor to rotate. The rotating wheel 3 is made of rubber material with greater friction, which can better drive the motor rotor shaft to rotate.

[0022] There are many ways to install the mobile frame 2, for example: a plurality of T-slots are provided on the top of the base plate 1 in the longitudinal direction, a T-slot slide block is slidably installed in the T-slot, the top of the T-slot slide block extends out of the T-slot and is fixedly connected to the mobile frame 2; the bidirectional telescopic mechanism includes a driving box 23 fixedly installed on the base plate 1, a rotating shaft 24 is rotatably installed in the driving box 23, both ends of the rotating shaft 24 respectively penetrate the driving box 23 and are fixedly installed with screws, the rotation directions of the two screws are opposite, the two mobile frames 2 are respectively threadedly connected with the screws on the adjacent sides, a driven gear 25 is mounted on the rotating shaft 24, a driving motor 26 is fixedly installed at the bottom of the driving box 23, a driving gear 27 is mounted on the output shaft of the driving motor 26, and the driven gear 25 is meshed with the driving gear 27 for transmission.

[0023] A fixed plate 10 is fixedly installed on the top of the outer support plate 18, and a slide groove is opened on the fixed plate 10. A moving block 11 is installed in the slide groove along the vertical sliding, and a top bead 12 is fixedly installed on the inner side of the moving block 11; a clamping frame 4 is provided above the rotating wheel 3, one end of the clamping frame 4 is hinged to the moving frame 2, and the other end is clamped with the moving frame 2 through a clamping assembly, and a fixed cylinder 5 is fixedly installed at the bottom of the clamping frame 4 in the enclosed area of ​​the two rotating wheels 3, and the two ends of the fixed cylinder 5 are sealed and a slide plate 6 is installed vertically inside, and a displacement sensor 7 is provided in the fixed cylinder 5 above the slide plate 6, and the external movable sleeve of the displacement sensor 7 is provided with a top spring, and the output end of the displacement sensor 7 is fixedly connected to the slide plate 6, and a connecting rod 8 is fixedly installed at the bottom of the slide plate 6, and the other end of the connecting rod 8 passes through the fixed cylinder 5 and is rotatably installed with a rotating wheel 9. There are many options for the displacement sensor 7, such as a pull-rope displacement sensor, the pull rope of the pull-rope displacement sensor passes through the top spring and is fixedly connected to the slide plate 6.

[0024] The clamping assembly includes two connecting plates 28 fixedly mounted on the inner and outer sides of the mobile frame 2. Plug holes are provided on the two connecting plates 28 and the clamping frame 4. A connecting tube 13 with sealed ends is fixedly mounted on the outer connecting plate 28. The connecting tube 13 is concentrically arranged with the plug hole. A slide rod 14 is axially slidably mounted inside the connecting tube 13. The end of the slide rod 14 away from the connecting plate 28 extends out of the connecting tube 13 and is fixedly mounted with a pull ring 17. A stopper 15 and a spring 16 are sequentially mounted on the upper side of the slide rod 14 in the connecting tube 13 from the inside to the outside in a horizontal direction. In the initial state, the spring 16 pushes the stopper 15, so that the end of the slide rod 14 close to the connecting plate 28 is inserted between the two connecting plates 28 through the plug hole.

[0025] The driving mechanism includes a transmission box 19, a pulley 20 and a motor 22. The rotating shafts of the two rotating wheels 3 and the output shaft of the motor 22 are extended into the transmission box 19 and are provided with pulleys 20. The two adjacent pulleys 20 are connected by a transmission belt 21. When the motor rotor is subjected to a dynamic balancing test, the motor 22 drives the two rotating wheels 3 to rotate in the same direction through belt transmission, and under the action of the rotating wheel 9, drives the motor rotor shaft placed in the enclosed area of ​​the rotating wheel 9 and the two rotating wheels 3 to rotate.

[0026] When we use this test fixture to test the motor rotor, we first adjust the distance between the two mobile frames 2 according to the length of the motor rotor. At this time, start the drive box 23. The drive box 23 drives the rotating shaft 24 to rotate through the meshing transmission of the driven gear 25 and the driving gear 27, thereby driving the screws at both ends of the rotating shaft 24 to rotate. Since the threads on the two screws rotate in opposite directions, when the rotating shaft 24 rotates, the two mobile frames 2 will move toward each other; then, pull the pull ring 17 to separate the slide bar 14 from the socket on the clamping frame 4, lift the clamping frame 4, so that the two ends of the motor rotor shaft are respectively mounted between the two rotating wheels 3 in the two mobile support assemblies, and the two top beads 12 are respectively pressed against the two ends of the motor rotor shaft to prevent the motor rotor from moving laterally, and then pull the pull ring 17 again and press the clamping frame 4 to return the clamping frame 4 to the initial position. When the clamping frame 4 and the socket on the connecting plate 28 are concentric, release the pull ring 17, and the slide bar 14 is inserted into the socket of the clamping frame 4 to fix the clamping frame 4.

[0027] The motor rotor shaft is fixed in the enclosed area formed by the rotating wheel 9 and the two rotating wheels 3. The motor 22 is started. The motor 22 drives the two rotating wheels 3 in the same movable support assembly to rotate in the same direction through belt transmission, thereby driving the motor rotor shaft to rotate. Due to the uneven mass distribution of the motor rotor, the motor rotor will generate centrifugal force when rotating, causing the motor rotor to vibrate. When the heavier side of the motor rotor rotates to the top, the centrifugal force will drive the motor rotor to jump upward, thereby pushing the rotating wheel 9 to move upward. Since in the initial state, the output end of the displacement sensor 7 is in contact with the slide plate 6, the jumping amount of the motor rotor can be detected, and then it is evaluated whether the motor rotor meets the standard.

[0028] Embodiment 2: Embodiment 2 is different from Embodiment 1 in that Figure 4 As shown, an insert block with a top surface tilted downward is fixedly mounted on one end of the slide rod 14 close to the connecting plate 28 , and the insert block is matched with the insertion hole to facilitate the clamping frame 4 to be clamped.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A motor rotor testing tool, comprising a base plate (1), a driving mechanism, a clamping assembly, a bidirectional telescopic mechanism and a movable support assembly slidably mounted on both sides of the base plate (1) in a transverse direction, characterized in that: The mobile support assembly comprises a mobile frame (2) which is slidably mounted on a bottom plate (1) in the transverse direction and fixedly connected to the output end of the bidirectional telescopic mechanism; support plates (18) are fixedly mounted on both inner and outer sides of the top of the mobile frame (2); two rotating wheels (3) are rotatably mounted between the two support plates (18) in the longitudinal direction; and the two rotating wheels (3) in one of the mobile support assemblies are both transmission-connected to a driving mechanism, and the driving mechanism can synchronously drive the two rotating wheels (3) to rotate in the same direction, thereby driving the motor rotor to rotate; a fixed plate (10) is fixedly mounted on the top of the outer support plate (18); a slide groove is provided on the fixed plate (10); a mobile block (11) is slidably mounted in the slide groove in the vertical direction; and the inner side of the mobile block (11) is fixedly mounted. A top ball is fixedly installed; a pressing frame (4) is provided above the rotating wheel (3); one end of the pressing frame (4) is hinged to the moving frame (2), and the other end is clamped to the moving frame (2) through a clamping assembly; a fixed cylinder (5) is fixedly installed at the bottom of the pressing frame (4) in the enclosed area of ​​the two rotating wheels (3); both ends of the fixed cylinder (5) are sealed and a slide plate (6) is installed vertically inside; a displacement sensor (7) is provided in the fixed cylinder (5) above the slide plate (6); an external movable sleeve of the displacement sensor (7) is provided with a top spring; an output end of the displacement sensor (7) is fixedly connected to the slide plate (6); a connecting rod (8) is fixedly installed at the bottom of the slide plate (6); the other end of the connecting rod (8) passes through the fixed cylinder (5) and is rotatably installed with a rotating wheel (9).

2. The motor rotor testing tool according to claim 1, characterized in that: The clamping assembly comprises two connecting plates (28) fixedly mounted on both sides of the movable frame (2), the two connecting plates (28) and the pressing frame (4) are provided with insertion holes, a connecting tube (13) with sealed ends fixedly mounted on the outer connecting plate (28), the connecting tube (13) and the insertion hole are arranged concentrically, a sliding rod (14) is axially slidably mounted inside the connecting tube (13), one end of the sliding rod (14) away from the connecting plate (28) extends out of the connecting tube (13) and is fixedly mounted with a pull ring (17), and a stopper (15) and a spring (16) are sequentially mounted on the upper edge of the sliding rod (14) in the connecting tube (13) in a transverse direction from the inside to the outside.

3. The motor rotor testing tool according to claim 1, characterized in that: The bidirectional telescopic mechanism comprises a driving box (23) fixedly mounted on a bottom plate (1), a rotating shaft (24) rotatably mounted in the driving box (23), screws respectively passing through the driving box (23) at both ends of the rotating shaft (24), the two screws having opposite rotation directions, the two moving frames (2) respectively being threadedly connected to the screws on adjacent sides, a driven gear (25) being sleeved on the rotating shaft (24), a driving motor (26) being fixedly mounted on the bottom of the driving box (23), a driving gear (27) being sleeved on the output shaft of the driving motor (26), and the driven gear (25) meshingly drives with the driving gear (27).

4. The motor rotor testing tool according to claim 1, characterized in that: The driving mechanism comprises a transmission box (19), a pulley (20) and a motor (22); the rotating shafts of the two rotating wheels (3) and the output shaft of the motor (22) both extend into the transmission box (19) and are fitted with the pulley (20); two adjacent pulleys (20) are connected by a transmission belt (21).

5. The motor rotor testing tool according to claim 2, characterized in that: An insert block with a top surface tilted downward is fixedly mounted on one end of the slide bar (14) close to the connection plate (28), and the insert block is adapted to the insertion hole.

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