Motor shaft run-out testing device
By designing a motor shaft jump test device containing vertical and horizontal shaking mechanisms, simulating car shaking and combining pressure sensors for detection, the problem of the inability to accurately detect motor shaft jumping in the prior art is solved, and a more accurate motor shaft jumping test is achieved.
Patent Information
- Application Number
- CN202411733856.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-02-28
AI Technical Summary
The prior art cannot simulate the detection of motor shaft jumping when the motor is shaken in different horizontal and vertical directions in a vehicle, resulting in inaccurate results of motor shaft jumping tests.
A motor shaft jump test device is designed, including a vertical shaking mechanism and a horizontal shaking mechanism. The second motor drives the sprocket to rotate, simulates the car's shaking, drives the fixed shell and the fixing plate to shake vertically and horizontally, and conducts the detection of the motor shaft with a pressure sensor.
This device can accurately simulate the use environment of the motor in the vehicle, improve the accuracy of the motor shaft jump test, make the test results closer to reality, and detect unqualified motors when shaking horizontally and vertically.
Smart Images
Figure CN119533827A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of motor shaft testing, and in particular to a motor shaft runout testing device. Background Art
[0002] With the development of society, motors are used more and more frequently. The output component of the motor is the motor shaft. In order to ensure that the motor can output smoothly, it is necessary to ensure that the rotational deviation of the motor shaft is within the specified range. Therefore, after the motor is produced, the motor shaft needs to be tested for vibration. The current method for testing the motor shaft for vibration is mainly to first fix the motor on a workbench, then fix the vibration measuring equipment on the motor shaft, start the motor, and use the vibration measuring equipment to detect the vibration of the motor shaft.
[0003] In the actual use of motors, a large portion of the motors are installed in vehicles. The motors in the vehicles will be subjected to horizontal and vertical shaking during output, and the horizontal and vertical shaking will also greatly affect the motor shaft vibration. However, there is no device in the prior art that can simulate the detection of the motor shaft vibration when the motor is subjected to different horizontal and vertical shaking. Summary of the invention
[0004] The purpose of the present invention is to solve the shortcomings existing in the background technology and to propose a motor shaft runout testing device.
[0005] To achieve the above objectives, the technical solution adopted by the present invention is: a motor shaft runout testing device, comprising a main body shell, the upper end of the main body shell is an open structure, a vertical shaking mechanism for adjusting the up and down shaking of the motor is arranged in the main body shell, the vertical shaking mechanism comprises two groups of symmetrically arranged rotating rods, each group of the rotating rods consists of three equidistantly arranged rotating rods, the ends of the two groups of the rotating rods are rotatably arranged in the main body shell, a fixed shell is slidably arranged in the main body shell, the end face of the fixed shell is provided with a horizontal shaking mechanism for horizontally shaking the motor, the horizontal shaking mechanism comprises a fixed plate slidably arranged on the end face of the fixed shell, and a clamping detection mechanism for fixing the motor and detecting the motor shaft is provided at the upper end of the fixed plate.
[0006] Preferably, a placement groove is provided on the side of the main body shell at a position close to the rotating rod, and a plurality of sprockets corresponding to the position of the rotating rod are rotatably arranged in the placement groove, and a transmission chain is meshed on the side of each of the sprockets. The main body shell is provided with a connecting plate on the side of the placement groove by bolts, and a second motor is fixedly connected to the connecting plate, and a transmission shaft of the second motor is fixedly connected to the side of one of the sprockets.
[0007] Preferably, the side surfaces of each group of the rotating rods are respectively fixedly connected with the first ellipsoid, the second ellipsoid and the third ellipsoid, the cross-sections of the first ellipsoid, the second ellipsoid and the third ellipsoid increase successively, the inner side surfaces of several of the sprockets are respectively fixedly connected with the third electric telescopic rod, the telescopic ends of several of the third electric telescopic rods are respectively fixedly connected with the limiting bodies, and the side surfaces of several of the rotating rods are respectively provided with limiting holes that cooperate with the limiting bodies.
[0008] Preferably, the lower end of the fixed plate is provided with two symmetrically arranged empty grooves, the fixed plate is fixedly connected with connecting rods in the empty grooves respectively, rollers are rotatably arranged on the sides of the two connecting rods, and the end surface of the fixed shell is provided with a sliding groove that cooperates with the rollers in a rolling manner.
[0009] Preferably, a plurality of fourth electric telescopic rods are fixedly connected to the side surface of the fixed shell, and telescopic ends of the plurality of fourth electric telescopic rods are fixedly connected to the side surface of the fixed plate.
[0010] Preferably, a plurality of symmetrically distributed springs are fixedly connected to the upper end of the fixed shell, an electromagnetic protection plate is rotatably provided on the upper end of the main body shell, and the electromagnetic protection plate is fixed to the upper end of the main body shell by bolts.
[0011] Preferably, the upper end of the fixed plate is fixedly connected to two symmetrically placed support plates, the inner sides of the two support plates are respectively fixedly connected to first electric telescopic rods, and the telescopic ends of the two first electric telescopic rods are respectively fixedly connected to anti-slip plates.
[0012] Preferably, a first limiting groove is provided at the upper end of the fixing plate, a first motor is fixedly connected to the side surface of the fixing plate, a transmission shaft end of the first motor is fixedly connected to a threaded rod in the first limiting groove, a limiting block which is slidably matched with the first limiting groove is provided on the side surface of the threaded rod through threaded cooperation, a second electric telescopic rod is fixedly connected to the upper end of the limiting block, and a pressure sensor is fixedly connected to the telescopic end portion of the second electric telescopic rod.
[0013] Compared with the prior art, the present invention has the following beneficial effects:
[0014] 1. A sprocket is driven to rotate by the second motor, and the sprocket drives other sprockets to rotate through the transmission chain. A third electric telescopic rod is fixedly connected to the side of each sprocket. When in use, a suitable ellipsoid is selected according to the shaking amplitude of the car to be simulated, and the third electric telescopic rod close to the two ellipsoids is extended. The limiting bodies at the telescopic ends of the two third electric telescopic rods cooperate to enter the limiting holes, thereby driving the two ellipsoids to rotate. The sides of the two ellipsoids are in direct contact with the fixed shell, thereby driving the fixed shell to shake up and down. At the same time, a number of fourth electric telescopic rods are controlled to extend and retract. The lower end of the fixed plate is fixedly connected to a roller through a connecting rod. The two rollers roll with the slide groove on the end face of the fixed shell, thereby facilitating the horizontal shaking of the fixed plate in the fixed shell, ensuring that the device can drive the motor to be tested to shake vertically and horizontally, thereby more accurately simulating the use environment of the motor placed in the vehicle, so that the motor shaft runout test result is closer to reality.
[0015] 2. Closing the electromagnetic protection plate on the upper end of the main shell can prevent the external electromagnetic field from interfering with the motor to be detected. At the same time, the electromagnetic protection plate will press the spring on the upper end of the fixed shell to ensure that the fixed shell can fall in time when the third ellipsoid shakes. Then start the motor to be detected and the first motor. The first motor drives the threaded rod to rotate. The threaded rod and the limit block are arranged in cooperation to drive the limit block to move along the first limit groove. Before the detection, the second electric telescopic rod is extended to the value of the pressure sensor within the specified range. During the detection, the mobile pressure sensor can detect various positions of the motor shaft. When the motor shaft jumps beyond the specified value, the value of the pressure sensor also exceeds the safety value. At this time, the pressure sensor will remind the staff that the motor does not reach the safety range, ensuring that the device can accurately detect unqualified motors when subjected to horizontal and vertical shaking. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;
[0017] Figure 2 The present invention is a sectional view of the whole Figure 1 ;
[0018] Figure 3 The present invention is a sectional view of the whole Figure 2 ;
[0019] Figure 4 It is a partial structural cross-sectional view of the present invention;
[0020] Figure 5 for Figure 2 A magnified image of point A;
[0021] Figure 6 for Figure 4 Enlarged view of point B.
[0022] 1. Main body shell; 11. Electromagnetic protection plate; 2. Clamping detection mechanism; 3. Vertical shaking mechanism; 4. Horizontal shaking mechanism; 21. First limiting groove; 22. Threaded rod; 23. Support plate; 24. First electric telescopic rod; 25. Anti-slip plate; 26. Limiting block; 27. Second electric telescopic rod; 28. Pressure sensor; 29. First motor; 31. Second motor; 32. Connecting plate; 33. First ellipsoid; 34. Second ellipsoid; 35. Third ellipsoid; 37. Spring; 38. Rotating rod; 39. Fixed shell; 310. Sprocket; 311. Transmission chain; 312. Placement groove; 313. Third electric telescopic rod; 314. Limiting body; 315. Limiting hole; 41. Fixed plate; 42. Fourth electric telescopic rod; 43. Slide groove; 44. Connecting rod; 45. Roller; 46. Empty groove. DETAILED DESCRIPTION
[0023] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.
[0024] See also Figure 1-Figure 6 A motor shaft runout test device comprises a main body shell 1, the upper end of the main body shell 1 is an open structure, and a vertical shaking mechanism 3 for adjusting the up and down shaking of the motor is arranged in the main body shell 1.
[0025] In this embodiment, the vertical shaking mechanism 3 includes two groups of symmetrically arranged rotating rods 38, each group of the rotating rods 38 is composed of three equidistantly arranged rotating rods 38, and the ends of the two groups of rotating rods 38 are rotatably arranged in the main body shell 1, and a fixed shell 39 is slidably arranged in the main body shell 1.
[0026] A placement groove 312 is provided on the side of the main body shell 1 near the rotating rod 38, and a plurality of sprockets 310 corresponding to the position of the rotating rod 38 are rotatably arranged in the placement groove 312, and a transmission chain 311 is meshed on the side of each of the sprockets 310. A connecting plate 32 is provided on the side of the placement groove 312 of the main body shell 1 through bolts, and a second motor 31 is fixedly connected to the connecting plate 32, and a transmission shaft of the second motor 31 is fixedly connected to the side of one of the sprockets 310.
[0027] The side surfaces of each group of the rotating rods 38 are respectively fixedly connected with the first ellipsoid 33, the second ellipsoid 34 and the third ellipsoid 35, and the cross-sections of the first ellipsoid 33, the second ellipsoid 34 and the third ellipsoid 35 increase successively. The inner side surfaces of several sprocket wheels 310 are respectively fixedly connected with the third electric telescopic rods 313, and the telescopic ends of several third electric telescopic rods 313 are respectively fixedly connected with the limiting bodies 314. The side surfaces of several rotating rods 38 are respectively provided with limiting holes 315 that cooperate with the limiting bodies 314.
[0028] Specifically, a sprocket 310 is driven to rotate by the second motor 31, and this sprocket 310 drives other sprockets 310 to rotate through the transmission chain 311. A third electric telescopic rod 313 is fixedly connected to the side of each sprocket 310. When in use, a suitable third ellipsoid 35 is selected according to the shaking amplitude of the car to be simulated, and the third electric telescopic rod 313 close to the two third ellipsoids 35 is extended. The limiting bodies 314 at the telescopic ends of the two third electric telescopic rods 313 cooperate to enter the limiting holes 315, thereby driving the two third ellipsoids 35 to rotate.
[0029] In this embodiment, a horizontal shaking mechanism 4 for horizontally shaking the motor is disposed on the end surface of the fixed shell 39 , and the horizontal shaking mechanism 4 includes a fixing plate 41 slidably disposed on the end surface of the fixed shell 39 .
[0030] The lower end of the fixing plate 41 is provided with two symmetrically arranged empty grooves 46, and the fixing plate 41 is fixedly connected with connecting rods 44 in the empty grooves 46 respectively. Rollers 45 are rotatably arranged on the sides of the two connecting rods 44, and the end surface of the fixing shell 39 is provided with a sliding groove 43 that rolls with the rollers 45.
[0031] A plurality of fourth electric telescopic rods 42 are fixedly connected to the side surface of the fixed shell 39 , and telescopic ends of the plurality of fourth electric telescopic rods 42 are fixedly connected to the side surface of the fixed plate 41 .
[0032] The upper end of the fixed shell 39 is fixedly connected with a plurality of symmetrically distributed springs 37 , and the upper end of the main shell 1 is rotatably provided with an electromagnetic protection plate 11 , which is fixed to the upper end of the main shell 1 by bolts.
[0033] Specifically, several fourth electric telescopic rods 42 are extended and retracted, and the lower end of the fixed plate 41 is fixedly connected to a roller 45 through a connecting rod 44. The two rollers 45 roll with the slide groove 43 on the end surface of the fixed shell 39, thereby facilitating the horizontal shaking of the fixed plate 41 in the fixed shell 39.
[0034] In this embodiment, a clamping detection mechanism 2 for fixing the motor and detecting the motor shaft is disposed at the upper end of the fixing plate 41 .
[0035] The upper end of the fixing plate 41 is fixedly connected to two symmetrically placed supporting plates 23 , the inner sides of the two supporting plates 23 are respectively fixedly connected to first electric telescopic rods 24 , and the telescopic ends of the two first electric telescopic rods 24 are respectively fixedly connected to anti-slip plates 25 .
[0036] A first limiting groove 21 is provided at the upper end of the fixing plate 41, a first motor 29 is fixedly connected to the side of the fixing plate 41, a transmission shaft end of the first motor 29 is fixedly connected to a threaded rod 22 in the first limiting groove 21, a limiting block 26 which is slidably matched with the first limiting groove 21 is provided on the side of the threaded rod 22 through threaded cooperation, a second electric telescopic rod 27 is fixedly connected to the upper end of the limiting block 26, and a pressure sensor 28 is fixedly connected to the telescopic end of the second electric telescopic rod 27.
[0037] Specifically, the motor to be tested and the first motor 29 are started, the first motor 29 drives the threaded rod 22 to rotate, and the threaded rod 22 is cooperated with the limit block 26 to drive the limit block 26 to move along the first limit groove 21. Before testing, the second electric telescopic rod 27 is extended to the value of the pressure sensor 28 within the specified range.
[0038] When in use, the motor to be detected is placed on the upper end of the fixing plate 41, and it is ensured that the motor to be detected is placed between the two support plates 23, and then the two first electric telescopic rods 24 are extended at the same time, and the motor to be detected is clamped by the anti-slip plate 25, and then the second motor 31 is started, and a sprocket 310 is driven to rotate by the second motor 31, and this sprocket 310 drives other sprockets 310 to rotate through the transmission chain 311, and each side of the sprocket 310 is fixedly connected with a third electric telescopic rod 313. When in use, according to the shaking amplitude of the car to be simulated, a suitable third ellipsoid 35 is selected, and the third electric telescopic rod 313 close to the two third ellipsoids 35 is extended. The two third electric telescopic rods 31 The limiting bodies 314 at the telescopic ends fit into the limiting holes 315, thereby driving the two third ellipsoids 35 to rotate. The sides of the two third ellipsoids 35 are in direct contact with the fixed shell 39, thereby driving the fixed shell 39 to shake up and down. At the same time, the plurality of fourth electric telescopic rods 42 are controlled to extend and retract. The lower end of the fixed plate 41 is fixedly connected with a roller 45 through a connecting rod 44. The two rollers 45 roll with the slide grooves 43 on the end surface of the fixed shell 39, thereby facilitating the horizontal shaking of the fixed plate 41 in the fixed shell 39, ensuring that the device can drive the motor to be tested to shake vertically and horizontally, thereby more accurately simulating the use environment of the motor placed in the vehicle, and making the motor shaft runout test result closer to reality.
[0039] When the vertical shaking mechanism 3 and the horizontal shaking mechanism 4 drive the motor to be detected to shake vertically and horizontally, the electromagnetic protection plate 11 on the upper end of the main shell 1 is closed to prevent the external electromagnetic field from interfering with the motor to be detected. At the same time, the electromagnetic protection plate 11 will press the spring 37 on the upper end of the fixed shell 39 to ensure that the fixed shell 39 can fall in time when the third ellipsoid 35 shakes. Then, the motor to be detected and the first motor 29 are started, and the first motor 29 drives the threaded rod 22 to rotate. The threaded rod 22 is arranged in cooperation with the limit block 26 to drive the limit block 26 to move along the first limit groove 21. Before the detection, the second electric telescopic rod 27 is extended to the value of the pressure sensor 28 within the specified range. During the detection, the moving pressure sensor 28 can detect various positions of the motor shaft. When the motor shaft jumps beyond the specified value, the value of the pressure sensor 28 also exceeds the safety value. At this time, the pressure sensor 28 will remind the staff that the motor does not reach the safety range, ensuring that the device can accurately detect unqualified motors when subjected to horizontal and vertical shaking.
[0040] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.
Claims
1. A motor shaft runout test device, comprising a main body shell (1), characterized in that: The upper end of the main shell (1) is an open structure. A vertical shaking mechanism (3) for adjusting the up and down shaking of the motor is arranged in the main shell (1). The vertical shaking mechanism (3) includes two groups of symmetrically arranged rotating rods (38). Each group of the rotating rods (38) is composed of three equidistantly arranged rotating rods (38). The ends of the two groups of rotating rods (38) are rotatably arranged in the main shell (1). A fixed shell (39) is slidably arranged in the main shell (1). The end surface of the fixed shell (39) is provided with a horizontal shaking mechanism (4) for horizontally shaking the motor. The horizontal shaking mechanism (4) includes a fixed plate (41) slidably arranged on the end surface of the fixed shell (39). The upper end of the fixed plate (41) is provided with a clamping detection mechanism (2) for fixing the motor and detecting the motor shaft.
2. A motor shaft runout test device according to claim 1, characterized in that: A placement groove (312) is provided on the side of the main body shell (1) at a position close to the rotating rod (38), and a plurality of sprockets (310) corresponding to the position of the rotating rod (38) are rotatably arranged in the placement groove (312), and a transmission chain (311) is meshedly arranged on the side of each of the sprockets (310). The main body shell (1) is provided with a connecting plate (32) on the side of the placement groove (312) by bolts, and a second motor (31) is fixedly connected to the connecting plate (32), and a transmission shaft of the second motor (31) is fixedly connected to the side of one of the sprockets (310).
3. A motor shaft runout test device according to claim 2, characterized in that: The side surfaces of each group of the rotating rods (38) are respectively fixedly connected with a first ellipsoid (33), a second ellipsoid (34) and a third ellipsoid (35); the cross sections of the first ellipsoid (33), the second ellipsoid (34) and the third ellipsoid (35) are increased in sequence; the inner side surfaces of a plurality of the sprocket wheels (310) are respectively fixedly connected with a third electric telescopic rod (313); the telescopic ends of a plurality of the third electric telescopic rods (313) are respectively fixedly connected with a limiting body (314); and the side surfaces of a plurality of the rotating rods (38) are respectively provided with limiting holes (315) matched with the limiting body (314).
4. A motor shaft runout test device according to claim 1, characterized in that: The lower end of the fixed plate (41) is provided with two symmetrically arranged empty grooves (46), the fixed plate (41) is fixedly connected with connecting rods (44) in the empty grooves (46), rollers (45) are rotatably arranged on the sides of the two connecting rods (44), and the end surface of the fixed shell (39) is provided with a sliding groove (43) that rolls with the rollers (45).
5. The motor shaft runout test device according to claim 1, characterized in that: A plurality of fourth electric telescopic rods (42) are fixedly connected to the side surface of the fixed shell (39), and the telescopic ends of the plurality of fourth electric telescopic rods (42) are fixedly connected to the side surface of the fixed plate (41).
6. A motor shaft runout test device according to claim 1, characterized in that: The upper end of the fixed shell (39) is fixedly connected to a plurality of symmetrically distributed springs (37), and the upper end of the main shell (1) is rotatably provided with an electromagnetic protection plate (11), which is fixed to the upper end of the main shell (1) by bolts.
7. The motor shaft runout test device according to claim 1, characterized in that: The upper end of the fixed plate (41) is fixedly connected to two symmetrically placed support plates (23), the inner side surfaces of the two support plates (23) are respectively fixedly connected to first electric telescopic rods (24), and the telescopic ends of the two first electric telescopic rods (24) are respectively fixedly connected to anti-slip plates (25).
8. The motor shaft runout test device according to claim 1, characterized in that: A first limiting groove (21) is provided at the upper end of the fixing plate (41); a first motor (29) is fixedly connected to the side of the fixing plate (41); a transmission shaft end of the first motor (29) is fixedly connected to a threaded rod (22) in the first limiting groove (21); a limiting block (26) which is slidably matched with the first limiting groove (21) is provided on the side of the threaded rod (22) through threaded matching; a second electric telescopic rod (27) is fixedly connected to the upper end of the limiting block (26); and a pressure sensor (28) is fixedly connected to the telescopic end of the second electric telescopic rod (27).