Motor rotor comprehensive test bench and test method

Abstract

The invention discloses a motor rotor comprehensive test bench and a test method, and relates to the technical field of motor rotor detection equipment, the motor rotor comprehensive test bench comprises a workbench, the top surface of the workbench is provided with a magnetic field probe and a radar probe; a supporting beam is arranged at the top end of the supporting rack; the force sensor is used for detecting the stress state of the supporting beam; the output end of the driving device is connected with a transmission shaft which is connected with the motor rotor through a transmission belt; the control table is arranged on one side of the workbench; and the handheld sensor is connected with the console through a signal line. According to the motor rotor comprehensive test board and the test method, the technical problem that time and labor are wasted due to the fact that all parameters of the motor rotor are measured independently in the prior art is solved, and all the parameters of the motor rotor are measured through the force sensor, the magnetic field probe, the radar probe and the handheld sensor at the same time; and the measurement efficiency of main performance parameters of the motor rotor is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of motor rotor detection equipment, and in particular to a motor rotor comprehensive test bench and a test method. Background Art

[0002] The motor rotor is a key component of the motor, and the relevant performance parameters of the motor rotor directly affect the motor performance. The main performance parameters of the motor rotor include: rotor weight, surface magnetic size and distribution, hardness, coaxiality, natural frequency measurement, etc. The existing technology uses special equipment to measure each parameter separately. When measuring each parameter of the motor rotor, it is necessary to frequently change the equipment, which is time-consuming and labor-intensive. Therefore, a motor rotor comprehensive test bench and test method for solving the above problems are proposed. Summary of the invention

[0003] The purpose of the present invention is to provide a motor rotor comprehensive test bench and test method, which solves the technical problem that the prior art uses special equipment to measure each parameter separately, requires frequent equipment replacement, and is time-consuming and labor-intensive.

[0004] To achieve the above object, the present invention provides a motor rotor comprehensive test bench, comprising:

[0005] A workbench, the top surface of which is provided with a magnetic field probe and a radar probe;

[0006] A support frame is arranged on the top surface of the workbench, and a support beam is arranged on the top of the support frame;

[0007] A force sensor is provided on the support beam, and is used to detect the force state of the support beam;

[0008] A driving device, arranged on the support beam, wherein the output end of the driving device is connected to a transmission shaft, and the transmission shaft is connected to a motor rotor via a transmission belt;

[0009] A control console is arranged at one side of the workbench, and the control console is connected to the driving device, the force sensor, the magnetic field probe and the radar probe;

[0010] A handheld sensor is connected to the console via a signal line, and the handheld sensor is used to detect the hardness and natural frequency of the motor rotor.

[0011] Preferably, a slide rail is provided on the top surface of the workbench, and the slide rail slidably connects the radar probe and the magnetic field probe.

[0012] Preferably, a driving cylinder is provided inside the workbench, the driving cylinder is connected to a support frame via a piston rod, and the support frame is connected to the radar probe and the magnetic field probe.

[0013] Preferably, a display screen is provided on the console, and the display screen is used for data display and parameter adjustment.

[0014] Preferably, an assembly seat is provided on the support beam, the assembly seat is slidably connected to the support beam, a threaded hole is provided on the side of the assembly seat, the threaded hole is threadedly connected to a positioning bolt, and one end of the positioning bolt abuts against the side of the support beam.

[0015] Preferably, transmission pulleys are sleeved on both ends of the transmission shaft, and the transmission pulleys are transmission-connected to the lower end of the transmission belt.

[0016] Preferably, two limit plate groups are provided at the lower end of the support beam, the limit plate groups are slidably connected to the support beam, rolling bearings are embedded in the sides of the two limit plate groups, and the sides of the two rolling bearings respectively abut the two end surfaces of the motor rotor.

[0017] Preferably, the limit plate group includes: a first limit plate, a connecting groove is provided on the bottom surface of the first limit plate, a second limit plate is slidably connected in the connecting groove, and a fastening bolt is provided on the side of the first limit plate, one end of the fastening bolt abuts against the side of the second limit plate.

[0018] Correspondingly, the technical solution of the present invention further provides a motor rotor comprehensive testing method, which is applied to any of the above-mentioned motor rotor comprehensive testing benches, comprising:

[0019] S1: The control console controls the device to start up, places the motor rotor at the lower end of the transmission belt, and the force sensor measures the weight of the motor rotor. The drive device is controlled to drive the motor rotor to rotate through the transmission shaft.

[0020] S2: Control the magnetic field probe and the radar probe to move from the first end of the motor rotor to the second end of the motor rotor, the magnetic field probe measures the surface magnetic size and surface magnetic distribution of the motor rotor, the radar probe measures the coaxiality of the motor rotor, and the handheld sensor touches the surface of the motor rotor to measure the hardness of the motor rotor and the natural frequency of the motor rotor.

[0021] Preferably, after the step of turning on the console control device, the method further includes: controlling the force sensor reading to return to zero and controlling the radar probe and the magnetic field probe to move to the first end of the motor rotor.

[0022] Compared with the above background technology, the motor rotor comprehensive test bench provided by the present invention has the following beneficial effects: the control console controls the magnetic field probe to measure the surface magnetic size and surface magnetic distribution of the motor rotor, controls the radar probe to measure the coaxiality of the motor rotor, and touches the surface of the motor rotor with a handheld sensor to measure the hardness of the motor rotor and the natural frequency of the motor rotor. It can simultaneously measure the weight, surface magnetic size and surface magnetic distribution, hardness, coaxiality and natural frequency of the motor rotor, without the need to frequently replace equipment, thereby improving the measurement efficiency of the main performance parameters of the motor rotor and effectively saving time costs. The motor rotor comprehensive test method used in the present invention also has the above beneficial effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0024] FIG1 is a three-dimensional structural diagram of a comprehensive test bench provided in an embodiment of the present invention;

[0025] FIG. 2 is a schematic plan view of a limit plate assembly provided in an embodiment of the present invention.

[0026] Specifically, 1-control console; 2-support beam; 3-drive device; 4-transmission shaft; 5-transmission belt; 6-support stand; 7-slide rail; 8-radar probe; 9-motor rotor; 10-magnetic field probe; 11-limiting plate group; 1101-first limiting plate; 1102-second limiting plate; 1103-fastening bolt; 1104-rolling bearing; 12-workbench; 13-assembly seat. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0029] As shown in FIG1 , in order to achieve the above-mentioned purpose, the present invention provides a comprehensive test bench for a motor rotor 9, comprising: a workbench 12 and a support frame 6 arranged on the workbench 12, wherein the support frame 6 is arranged on the top surface of the workbench 12, wherein a support beam 2 is provided at the top end of the support frame 6, and the support beam 2 is used to provide a support carrier.

[0030] Specifically, a force sensor is arranged on the support beam 2, and the force sensor is used to detect the stress state of the support beam 2. Preferably, the force sensor is arranged on the bottom surface of the support beam 2, and the bottom surface of the force sensor abuts against the top surface of the support frame 6. When the support beam 2 is subjected to a downward pulling force, the force sensor can obtain the magnitude of the pulling force on the support beam 2 in time.

[0031] In one embodiment of the present invention, a driving device 3 is arranged on the support beam 2, and the output end of the driving device 3 is connected to the transmission shaft 4, and the transmission shaft 4 is connected to the motor rotor 9 through the transmission belt 5, wherein the transmission shaft 4 is transmission-connected to the upper end of the transmission belt 5, and the upper end of the transmission belt 5 is transmission-connected to the motor rotor 9, and the driving device 3 drives the transmission shaft 4 to rotate, and the transmission shaft 4 is connected to the motor rotor 9 through the transmission belt 5 to rotate.

[0032] Preferably, the driving device 3 adopts a servo motor, which takes advantage of the servo motor's precise speed control to ensure that the transmission shaft 4 can operate stably, thereby ensuring that the motor rotor 9 can operate stably driven by the transmission belt 5 .

[0033] A magnetic field probe 10 and a radar probe 8 are provided on the top surface of the workbench 12, wherein the magnetic field probe 10 is used to detect the magnetic field strength of the motor rotor 9; and the radar probe 8 is used to detect the linear distance between the surface of the motor rotor 9 and the probe. Preferably, the radar is a microwave radar, which uses the good directivity of microwaves and a speed equal to the speed of light, thereby being able to quickly and accurately measure the linear distance between the surface of the motor rotor 9 and the probe.

[0034] A control console 1 is provided on one side of the workbench 12. Specifically, the control console 1 is connected to the driving device 3, the force sensor, the magnetic field probe 10 and the radar probe 8. A display screen is provided on the control console 1. The display screen is mainly used for data display. At the same time, the parameters of the driving device 3, the force sensor, the magnetic field probe 10 and the radar probe 8 can be adjusted through the display screen.

[0035] In addition, the console 1 is connected to a handheld sensor via a signal line, and the handheld sensor is used to detect the hardness of the motor rotor 9 and the natural frequency of the motor rotor 9. When the force sensor, the magnetic field probe 10 and the radar probe 8 measure the various parameters of the motor rotor 9 respectively, the staff also measures the hardness of the motor rotor 9 and the natural frequency of the motor rotor 9 through the handheld sensor at the same time, and various measurements can be carried out synchronously.

[0036] During operation, the motor rotor 9 is placed at the lower end of the transmission belt 5, the force sensor measures the weight of the motor rotor 9, the control console 1 controls the drive device 3 to start, and the drive device 3 drives the motor rotor 9 to rotate through the transmission shaft 4; the magnetic field probe 10 and the radar probe 8 move from the left end of the motor rotor 9 to the right end of the motor rotor 9, the magnetic field probe 10 measures the surface magnetic size and surface magnetic distribution of the motor rotor 9, the radar probe 8 measures the coaxiality of the motor rotor 9, and the handheld sensor touches the surface of the motor rotor 9 to measure the hardness of the motor rotor 9 and the natural frequency of the motor rotor 9, and at the same time, the weight of the motor rotor 9, the surface magnetic size and surface magnetic distribution, the hardness of the motor rotor 9, the coaxiality of the motor rotor 9 and the natural frequency of the motor rotor 9 are measured, without the need to frequently replace equipment, thereby improving the measurement efficiency of the main performance parameters of the motor rotor 9.

[0037] In one embodiment of the present invention, a slide rail 7 is provided on the top surface of a workbench 12, and the slide rail 7 is slidably connected to a radar probe 8 and a magnetic field probe 10, and the movement paths of the radar probe 8 and the magnetic field probe 10 are limited by the slide rail 7, while ensuring that the radar probe 8 and the magnetic field probe 10 can slide freely on the top surface of the workbench 12. Specifically, the length direction of the slide rail 7 is the same as the axial direction of the motor rotor 9, thereby ensuring that the radar probe 8 and the magnetic field probe 10 can move along the axial direction of the motor rotor 9 from the left end of the motor rotor 9 to the right end of the motor rotor 9, and then comprehensively measure the surface magnetic size and surface magnetic distribution of the motor rotor 9 and the coaxiality of the motor rotor 9, thereby effectively improving the accuracy of detection of various parameters of the motor rotor 9.

[0038] It should be noted that a driving cylinder is provided inside the workbench 12, and the driving cylinder is connected to the support frame through a piston rod, and the support frame is connected to the radar probe 8 and the magnetic field probe 10. When the driving device 3 drives the motor rotor 9 to rotate through the transmission shaft 4, the driving cylinder drives the support frame to move from left to right through the piston rod, that is, under the pushing action of the driving cylinder, the radar probe 8 and the magnetic field probe 10 move at a uniform speed from the left end of the motor rotor 9 to the right end of the motor rotor 9 in turn.

[0039] In one embodiment of the present invention, an assembly seat 13 is provided on the support beam 2. Specifically, two assembly seats 13 are provided. The two assembly seats 13 are respectively connected to the two ends of the transmission shaft 4 through the transmission shaft 4 bearings (not shown in the figure). Preferably, a driving device 3 is provided on the side of the assembly seat 13. The driving device 3 drives the transmission shaft 4 to rotate, and then drives the transmission belt 5 to rotate through the transmission shaft 4, and the transmission belt 5 drives the motor rotor 9 to move.

[0040] It should be noted that the assembly seat 13 is slidably connected to the upper flange of the support beam 2, and the distance between the two assembly seats 13 can be adjusted. Further, by replacing the length of the transmission shaft 4 and adjusting the distance between the transmission belts 5 at both ends of the transmission shaft 4, it can adapt to motor rotors 9 of different lengths, sizes and specifications, thereby improving the applicability of the overall test bench and making it more practical.

[0041] In addition, a threaded hole is provided on the side of the assembly seat 13, and the threaded hole is threadedly connected by a positioning bolt, and one end of the positioning bolt abuts against the side of the support beam 2. When it is necessary to adjust the position of the assembly seat 13 on the support beam 2 or the distance between two assembly seats 13, the positioning bolt is rotated in the reverse direction, and one end of the positioning bolt no longer abuts against the side of the support beam 2, and the assembly seat 13 can slide freely on the support beam 2. When the assembly seat 13 is adjusted to a specified position, the positioning bolt is rotated forward until one end of the positioning bolt abuts against the side of the support beam 2, locking the position of the assembly seat 13 on the support beam 2.

[0042] In one embodiment of the present invention, transmission belt wheels 5 are sleeved on both ends of the transmission shaft 4. Specifically, the upper end of the transmission belt wheel 5 is connected to the transmission belt wheel 5, and the lower end of the transmission belt 5 is connected to the motor rotor 9. The setting of the transmission belt wheel 5 can limit the position of the transmission belt 5 on the transmission shaft 4, avoiding axial movement of the transmission belt 5 on the transmission shaft 4, so as to ensure the stability of the motor rotor 9 during rotation.

[0043] As shown in Figure 1, two limiting plate groups 11 are provided at the lower end of the support beam 2. Specifically, the limiting plate group 11 is slidably connected to the support beam 2. Specifically, the upper end surface of the limiting plate group 11 is provided with a slide groove, and the slide groove is slidably connected to the lower flange of the support beam 2, and the side surfaces of the lower end of the limiting plate group 11 are pressed against the two end surfaces of the motor rotor 9, thereby limiting the motor rotor 9 in the axial line direction, preventing the motor rotor 9 from shaking back and forth when it is driven by the transmission belt 5 to rotate, and improving the stability of the motor rotor 9 when rotating.

[0044] In addition, rolling bearings 1104 are embedded in the side surfaces of the lower ends of the two limit plate groups 11. When the side surfaces of the lower ends of the limit plate groups 11 are pressed against the two end surfaces of the motor rotor 9, the side surfaces of the two rolling bearings 1104 respectively abut against the two end surfaces of the motor rotor 9, thereby ensuring that there is no mutual friction between the motor rotor 9 and the side surfaces of the limit plate groups 11, thereby improving the stability of the motor rotor 9 during operation and protecting the motor rotor 9.

[0045] It should be noted that a locking bolt is provided on the side of the limit plate group 11. When the position of the limit plate group 11 on the support beam 2 needs to be adjusted, the locking bolt is rotated in the reverse direction, and one end of the locking bolt no longer abuts against the side of the support beam 2, and the limit plate group 11 can slide freely on the support beam 2. When the limit plate group 11 is adjusted to a specified position, the sides of the rolling bearings 1104 on the two limit plate groups 11 respectively abut against the two ends of the motor rotor 9, and the locking bolt is rotated forward until one end of the locking bolt abuts against the side of the support beam 2, thereby locking the position of the limit plate group 11 on the support beam 2.

[0046] Preferably, the side surface of the rolling bearing 1104 is set as an inner concave surface to ensure that the motor rotor 9 is fully limited in all directions, further improving the stability of the motor rotor 9 when rotating.

[0047] In one embodiment of the present invention, the limit plate group 11 includes: a first limit plate 1101, a connection groove is provided on the bottom surface of the first limit plate 1101, and a second limit plate 1102 is slidably connected in the connection groove, and a fastening bolt 1103 is provided on the side of the first limit plate 1101, and one end of the fastening bolt 1103 abuts against the side of the second limit plate 1102, which is used to lock the length of the limit plate group 11. Specifically, the rolling bearing 1104 is arranged at the lower end of the second limit plate 1102, and the overall length of the limit plate group 11 is flexibly adjusted according to demand to ensure that the rolling bearing 1104 can stably abut against the two end surfaces of the motor rotor 9, thereby ensuring the stable operation of the motor rotor 9.

[0048] It should be noted that by adjusting the overall length of the limit plate group 11, the transmission belt 5 can be always in a stretched state, further ensuring the stability of the rotation speed of the motor rotor 9. In addition, a retaining ring is sleeved on the motor rotor 9, and the retaining ring cooperates with the limit plate to limit the relative axial position of the transmission belt 5 on the motor rotor 9, so as to prevent the transmission belt 5 from moving back and forth when driving the motor rotor 9 to rotate, resulting in unstable rotation speed of the motor rotor 9.

[0049] The comprehensive testing method of the motor rotor 9 adopted by the present invention specifically includes the following steps: the control console 1 controls the equipment to start up, the force sensor reading is reset to zero, the radar probe 8 and the magnetic field probe 10 are both moved to the left end of the motor rotor 9, the motor rotor 9 is placed on the lower end of the transmission belt 5, the force sensor measures the weight of the motor rotor 9, and the two limit plate groups 11 are moved until the rolling bearing 1104 is pressed against the two end surfaces of the motor rotor 9, the control console 1 controls the driving device 3 to start, and the driving device 3 drives the motor rotor 9 to rotate through the transmission shaft 4. At the same time, the control console 1 controls the driving cylinder to drive the piston rod to extend, and the radar probe 8 and the magnetic field probe 10 move at a uniform speed from the left end of the motor rotor 9 to the right end of the motor rotor 9 in turn, the magnetic field probe 10 measures the surface magnetic size and surface magnetic distribution of the motor rotor 9, the radar probe 8 measures the coaxiality of the motor rotor 9, and the surface of the motor rotor 9 is touched by a handheld sensor to measure the hardness of the motor rotor 9 and the natural frequency of the motor rotor 9.

[0050] In summary, the weight of the motor rotor 9, the surface magnetic size and distribution of the motor rotor 9, the coaxiality of the motor rotor 9, the hardness of the motor rotor 9, and the natural frequency of the motor rotor 9 are respectively measured by the force sensor, the magnetic field probe 10, the radar probe 8 and the handheld sensor, thereby improving the measurement efficiency of the main performance parameters of the motor rotor 9 and effectively saving time costs.

[0051] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0052] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the method and core ideas of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the scope of protection of the present invention.

Claims

1. A motor rotor comprehensive test bench, characterized in that: include: A workbench, the top surface of which is provided with a magnetic field probe and a radar probe; A support frame is arranged on the top surface of the workbench, and a support beam is arranged on the top of the support frame; A force sensor is provided on the support beam, and is used to detect the force state of the support beam; A driving device, arranged on the support beam, wherein the output end of the driving device is connected to a transmission shaft, and the transmission shaft is connected to a motor rotor via a transmission belt; A control console is arranged at one side of the workbench, and the control console is connected to the driving device, the force sensor, the magnetic field probe and the radar probe; A handheld sensor is connected to the console via a signal line, and the handheld sensor is used to detect the hardness and natural frequency of the motor rotor.

2. A motor rotor comprehensive test bench according to claim 1, characterized in that: A slide rail is provided on the top surface of the workbench, and the slide rail is slidably connected to the radar probe and the magnetic field probe.

3. A motor rotor comprehensive test bench according to claim 2, characterized in that: A driving cylinder is arranged inside the workbench, and the driving cylinder is connected to a support frame through a piston rod, and the support frame is connected to the radar probe and the magnetic field probe.

4. A motor rotor comprehensive test bench according to any one of claims 1-3, characterized in that: The console is provided with a display screen, which is used for data display and parameter adjustment.

5. A motor rotor comprehensive test bench according to any one of claims 1-3, characterized in that: An assembly seat is provided on the support beam, and the assembly seat is slidably connected to the support beam. A threaded hole is provided on the side of the assembly seat, and the threaded hole is threadedly connected to a positioning bolt, and one end of the positioning bolt abuts against the side of the support beam.

6. A motor rotor comprehensive test bench according to claim 5, characterized in that: The two ends of the transmission shaft are sleeved with transmission pulleys, and the transmission pulleys are transmission-connected to the lower end of the transmission belt.

7. The motor rotor comprehensive test bench according to claim 6, characterized in that: Two limit plate groups are provided at the lower end of the support beam, and the limit plate groups are slidably connected to the support beam. Rolling bearings are embedded in the sides of the two limit plate groups, and the sides of the two rolling bearings respectively abut against the two end surfaces of the motor rotor.

8. The motor rotor comprehensive test bench according to claim 7, characterized in that: The limiting plate group includes: a first limiting plate, a connecting groove is provided on the bottom surface of the first limiting plate, a second limiting plate is slidably connected in the connecting groove, a fastening bolt is provided on the side of the first limiting plate, and one end of the fastening bolt abuts against the side of the second limiting plate.

9. A comprehensive testing method for a motor rotor, characterized in that: The motor rotor comprehensive test bench used in any one of claims 1 to 8 comprises: S1: The control console controls the device to start up, places the motor rotor at the lower end of the transmission belt, and the force sensor measures the weight of the motor rotor. The drive device is controlled to drive the motor rotor to rotate through the transmission shaft. S2: Control the magnetic field probe and the radar probe to move from the first end of the motor rotor to the second end of the motor rotor, the magnetic field probe measures the surface magnetic size and surface magnetic distribution of the motor rotor, the radar probe measures the coaxiality of the motor rotor, and the handheld sensor touches the surface of the motor rotor to measure the hardness of the motor rotor and the natural frequency of the motor rotor.

10. A motor rotor comprehensive testing method according to claim 9, characterized in that: After the step of starting up the console control device, the method further includes: controlling the force sensor to return to zero and controlling the radar probe and the magnetic field probe to move to the first end of the motor rotor.

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