Detection equipment for motor shaft

Abstract

The invention belongs to the technical field of motor shaft dynamic balance detection, and particularly relates to detection equipment for a motor shaft, which comprises a bottom frame, and the two ends of the bottom frame are respectively provided with a driving unit and a detection unit; the supporting modules are arranged at the two ends of the bottom frame, and the driving unit and the detection unit are fixedly connected to the bottom frame through the supporting modules; the driving unit comprises a transmission shaft fixedly connected with the output end of the motor; the driving guide wheel is fixedly connected to the transmission shaft; by arranging the driving unit and the detection unit, the rotor body can be locked depending on the self weight of the rotor body when the rotor body is placed, and then the dynamic balance of the rotor body is detected by controlling the motor to start, driving the rotor body to rotate by utilizing a belt in the driving unit and cooperating with a sensor in the detection unit. Multi-step operation is not needed, errors possibly occurring in the multi-step operation are reduced, and therefore the authenticity of dynamic balance detection of the rotor body is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of motor shaft dynamic balance detection, in particular to a detection device for a motor shaft. Background Art

[0002] The motor shaft is the motor rotor. The dynamic balancing test of the motor rotor is a key step to ensure the stable operation of the motor and reduce vibration and noise. In industrial production, the imbalance of the motor rotor directly affects the operating efficiency and life of the equipment. In practical applications, dynamic balancing machines are widely used in the field of motor manufacturing as professional equipment. When the dynamic balancing machine is used to drive the rotor to rotate, the phase and amplitude of the rotor imbalance are measured by the sensor, and then the position and size of weighting (or deweighting) are determined. After repeated tests, weighting and deweighting operations are taken to reduce the unbalanced force, and finally eliminate the unbalanced force until the ideal state is reached.

[0003] For example, the patent with publication number CN116659750A discloses a motor core dynamic balancing detection device, including a middle shell and a test shaft, a first side shell is installed on one side of the middle shell, and a second side shell is installed on the other side of the middle shell; a first motor is installed in the middle of the inner wall of the first side shell, and the output shaft of the first motor passes through the first side shell and is connected to the drive roller, and the drive roller is arranged on the outer side of the first side shell; in the present invention, a plurality of freely rotatable rubber rollers are provided on the inner walls of the first support shaft seat, the second support shaft seat and the third support shaft seat, and the two ends of the test shaft are supported by the rubber rollers, and the first support shaft seat and the second support shaft seat can be automatically opened and closed in cooperation with the cylinder, and one end of the test shaft is clamped by the first support shaft seat and the second support shaft seat to ensure that one end of the test shaft remains stable, and the other end of the test shaft is arranged at the top end of the open third support shaft seat, to ensure that one end of the test shaft can have a larger swing space when rotating, thereby improving the detection accuracy.

[0004] In the above-mentioned prior art, the installation of the test shaft includes one end passing through the first support shaft seat, and relying on the cylinder to drive the second support shaft seat to press down for positioning, while the other end is driven by a motor to control the third support shaft seat to slide and dock with the end of the test shaft. Therefore, the setting of the entire device includes physical docking, tension adjustment and other operations. From a technical perspective, if any of the steps is not performed accurately, it may cause a huge change in the accuracy of the device for rotor dynamic balancing detection; To this end, the present invention provides a detection device for a motor shaft. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve the technical problem is: a detection device for a motor shaft according to the present invention comprises: A bottom frame, with a driving unit and a detection unit respectively disposed at two ends of the bottom frame; A supporting module, wherein the supporting module is arranged at both ends of the bottom frame, and the driving unit and the detecting unit are fixedly connected to the bottom frame via the supporting module; The driving unit comprises: A transmission shaft fixedly connected to an output end of the motor; A driving guide wheel fixedly connected to the transmission shaft; Two guide wheels movably connected to the side walls of the support module, and A belt sleeved between the driving guide wheel and the guide wheel; The detection unit comprises: a fixing frame slidably connected to the supporting module, and A plurality of sensors arranged on the fixing frame are used to detect the dynamic balance of the rotor body; It also includes a trigger rod, the middle part of which is hinged in the support module via a pin shaft; a torsion spring is sleeved on the pin shaft, and a first slope is provided at one end of the trigger rod adjacent to the fixing frame; the first slope is snap-fitted with the bottom of the fixing frame.

[0007] Preferably, the support module comprises: A first supporting block provided with a driving unit; A second supporting block provided with a detection unit; Rotate a first roller connected to the first support block and the second support block; A clearance groove is provided on the surface of the first supporting block and the second supporting block.

[0008] Preferably, the driving unit further includes: A swing arm rotatably connected to the side wall of the first support block through the warp axis; A connecting shaft fixed to one end of the swing arm, and Rotating a second roller connected to one end of the connecting shaft; The other end of the swing arm is rotatably connected to the side wall of the first support block via the shaft; the transmission shaft passes through the side wall of the first support block; and the guide wheel is rotatably connected to the other end of the connecting shaft.

[0009] Preferably, the driving unit further includes: A tensioner wheel is arranged coaxially with the swing arm, and Teeth fixedly connected to the outer peripheral surface of the other end of the swing arm; The other ends of the two swing arms are meshed with teeth.

[0010] Preferably, the detection unit further comprises: A movable plate slidably connected to one side of the fixed frame; a partition fixed to one side of the fixing frame, and A spring shaft fixed to the bottom of the partition; A waist-shaped groove is provided at the bottom of the fixing frame, and a support plate is fixedly connected to one side of the movable plate adjacent to the fixing frame, and the support plate is slidably connected in the waist-shaped groove; the spring shaft is slidably connected to the top of the movable plate; and the bottom of the movable plate is engaged with the first slope.

[0011] Preferably, a guide shaft is fixedly connected to the side wall of the second support block, and the fixing frame is slidably connected to the guide shaft; a second spring is sleeved on the guide shaft, and two ends of the second spring are respectively fixedly connected to the second support block and the fixing frame.

[0012] Preferably, a movable groove is provided in the middle of the second support block, and the trigger rod is rotatably connected in the movable groove via a pin shaft; a second slope is also provided at one end of the trigger rod adjacent to the fixing frame, and the second slope is used to assist the movable plate to disengage from the first slope.

[0013] Preferably, it also includes a trigger plate; a first spring is fixed between the trigger plate and the bottom frame, and the first spring is arranged between the first support block and the second support block; spring pins are penetrated and connected at the four corners of the trigger plate, and the trigger plate is slidably connected to the side wall of the bottom frame via the spring pins.

[0014] Preferably, a connecting frame is fixedly connected to the trigger plate, and a plurality of third rollers are rotatably connected to the connecting frame; the third rollers are used to guide the rotation of the rotor body.

[0015] Preferably, a clamping plate is fixedly connected to one end of the bottom of the trigger plate adjacent to the trigger rod, and the trigger rod is clamped and matched with the clamping plate.

[0016] The beneficial effects of the present invention are as follows: 1. The detection device for a motor shaft described in the present invention, by setting a driving unit and a detection unit, can rely on the weight of the rotor body to complete the locking of the rotor body when the rotor body is placed, and then control the motor to start, use the belt in the driving unit to drive the rotor body to rotate, and cooperate with the sensor in the detection unit to detect the dynamic balance of the rotor body. It does not require multi-step operation, reducing the errors that may occur in the multi-step operation, thereby improving the authenticity of the dynamic balance detection of the rotor body, and facilitating operation. When the dynamic balance of a large number of rotor bodies needs to be detected, the detection steps are simplified.

[0017] 2. The present invention describes a detection device for a motor shaft, which is provided with a movable plate, and the movable plate maintains a sliding fit with the fixed plate via a support plate and a spring shaft. When one end of the trigger plate is tilted, the movable plate can be squeezed to move upward, thereby separating the movable plate from the first slope. When the movable plate is separated from the first slope, the fixed frame can be displaced toward the second support block, and then be sleeved on the other end of the rotor body. After the motor is started, the sensor on the fixed frame can be used to detect the dynamic balance of the rotor body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] Figure 1 is a first stereogram of the present invention; Figure 2 is a second stereogram of the present invention; Figure 3 is a top view of the present invention; Figure 4 yes Figure 3 GG section view in; Figure 5 is a first partial stereogram of the present invention; Figure 6 is a three-dimensional diagram of the drive unit in the present invention; Figure 7 is a second partial stereogram of the present invention; Figure 8 is a three-dimensional diagram of the detection unit and the trigger rod in the present invention; Fig. 9 is a schematic diagram of the driving unit not contacting the rotor body in the present invention; Fig.10 is a schematic diagram of the driving unit contacting the rotor body in the present invention; In the figure: 1. bottom frame; 11. first spring; 2. support module; 21. first support block; 22. second support block; 23. give way groove; 24. first roller; 25. guide shaft; 26. second spring; 27. movable groove; 3. rotor body; 4. drive unit; 41. belt; 42. driving guide wheel; 43. transmission shaft; 44. guide wheel; 45. second roller; 46. swing arm; 4601. teeth; 47. tensioner; 5. detection unit; 51. fixed frame; 5101. partition; 5102. waist groove; 52. sensor; 53. movable plate; 5301. support plate; 54. spring shaft; 6. trigger plate; 61. spring pin; 62. card plate; 7. third roller; 8. trigger rod; 81. pin shaft; 82. first slope; 83. second slope. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0021] like Figures 1 to 8 As shown, a detection device for a motor shaft according to an embodiment of the present invention comprises: a bottom frame 1, wherein a driving unit 4 and a detection unit 5 are respectively arranged at two ends of the bottom frame 1; a support module 2, wherein the support module 2 is arranged at two ends of the bottom frame 1, and the driving unit 4 and the detection unit 5 are fixedly connected to the bottom frame 1 via the support module 2; the driving unit 4 comprises: a transmission shaft 43 fixedly connected to the output end of the motor; a driving guide wheel 42 fixedly connected to the transmission shaft 43; two guide wheels 44 movably connected to the side wall of the support module 2, and a belt 41 sleeved between the driving guide wheel 42 and the guide wheel 44; the detection unit 5 comprises: a fixing frame 51 slidably connected to the support module 2, and a plurality of sensors 52 arranged on the fixing frame 51, for detecting the dynamic balance of the rotor body 3; It also includes a trigger rod 8, the middle part of which is hinged in the support module 2 via a pin shaft 81; a torsion spring is sleeved on the pin shaft 81, and a first slope 82 is provided at one end of the trigger rod 8 adjacent to the fixing frame 51; the first slope 82 is snap-fitted with the bottom of the fixing frame 51.

[0022] In the prior art, the installation of the test shaft includes one end passing through the first support shaft seat, and relying on the cylinder to drive the second support shaft seat to press down for positioning, while the other end is driven by a motor to control the third support shaft seat to slide and dock with the end of the test shaft. Therefore, the setting of the entire equipment includes physical docking, tension adjustment and other operations. From a technical perspective, if any of these steps is not performed accurately, it may cause a huge change in the accuracy of the equipment for rotor dynamic balancing detection; Based on the above, in one embodiment of the present invention, when the rotor body 3 is dynamically balanced, the rotor body 3 is first placed in the bottom frame 1 from top to bottom, and the two ends of the rotor body 3 will naturally rest on the support modules 2 at both ends of the bottom frame 1. Before one end of the rotor body 3 rests on the support module 2, one end of the rotor body 3 will preferentially contact the belt 41, and under the influence of the weight of the rotor body 3 itself, the belt 41 is squeezed to produce a downward concave deformation. When the belt 41 is deformed downward, the guide wheel 44 is movably connected to the support module 2. The belt 41 is supported on the support module 2, so when the belt 41 is deformed downward, it will drive the guide wheel 44 to move closer to one end of the rotor body 3, so that the belt 41 can be in large-area contact with one end of the rotor body 3, wherein the driving guide wheel 42 is driven by the transmission shaft 43, and the transmission shaft 43 is fixedly connected to the output end of the external motor. Therefore, when the external motor is started, the driving guide wheel 42 can be driven to rotate through the transmission shaft 43, thereby driving the belt 41 to rotate. Since the belt 41 is in large-area contact with one end of the rotor body 3 at this moment, the purpose of driving the rotor body 3 to rotate can be achieved; In addition, when the other end of the rotor body 3 rests on the supporting module 2, the trigger rod 8 in the bottom frame 1 is squeezed by the middle of the rotor body 3, so that the trigger rod 8 is tilted adjacent to one end of the detection unit 5. When one end of the trigger rod 8 is tilted, it can squeeze the fixing frame 51 to separate it from the first slope 82, thereby completing the unlocking of the detection unit 5, so that the detection unit 5 can be sleeved on the other end of the rotor body 3. When the rotor body 3 is driven by the driving unit 4 to rotate, the amplitude of the rotor body 3 caused by the rotation imbalance is recorded by relying on the multiple sensors 52 arranged on the fixing frame 51, thereby realizing the detection of the rotor body. 3 dynamic balance detection; therefore, by setting the driving unit 4 and the detection unit 5, when the rotor body 3 is placed, the rotor body 3 can be locked by relying on its own weight, and then the motor is started by controlling the belt 41 in the driving unit 4 to drive the rotor body 3 to rotate, and the dynamic balance of the rotor body 3 is detected in cooperation with the sensor 52 in the detection unit, without the need for multi-step operation, reducing the error that may occur in the multi-step operation, thereby improving the authenticity of the dynamic balance detection of the rotor body 3, and facilitating the operation. When the dynamic balance of a large number of rotor bodies 3 needs to be detected, the detection steps are simplified.

[0023] like Figures 1 to 4 As shown, the support module 2 comprises: a first support block 21 provided with a driving unit 4; A second support block 22 is provided with a detection unit 5; a first roller 24 rotatably connected to the first support block 21 and the second support block 22; and a clearance groove 23 is provided on the surface of the first support block 21 and the second support block 22.

[0024] For ease of understanding, in one embodiment of the present invention, the support modules 2 at both ends of the bottom frame 1 are named the first support block 21 and the second support block 22, respectively, and when the rotor body 3 is overlapped on the support module 2, considering that there may be friction between the rotor body 3 and the support module 2, when the rotor module is driven to rotate by the drive unit 4, if there is friction, it may cause the dynamic balance detection error of the rotor body 3 to increase. Therefore, a first roller 24 is arranged on the support module 2, which can guide the rotor body 3, and at the same time, a gap is generated between the two ends of the rotor body 3 and the support module 2 to reduce friction.

[0025] like Figures 5 and 6 , Fig. 9 , Fig.10 As shown, the driving unit 4 also includes: a swing arm 46 rotatably connected to the side wall of the first support block 21 via an axis; a connecting shaft fixed to one end of the swing arm 46, and a second roller 45 rotatably connected to one end of the connecting shaft; the other end of the swing arm 46 is rotatably connected to the side wall of the first support block 21 via an axis; the transmission shaft 43 passes through the side wall of the first support block 21; and the guide wheel 44 is rotatably connected to the other end of the connecting shaft.

[0026] Based on the above, when one end of the rotor body 3 contacts the belt 41, the belt 41 will be depressed downward under the action of its own weight, and when the belt 41 is depressed downward, it will drive the two guide wheels 44 to move closer to one end of the rotor body 3. In one embodiment of the present invention, a swing arm 46 rotatably connected to the side wall of the first support block 21 is used to support the guide wheel 44, that is, the guide wheel 44 is rotatably connected to one end of the swing arm 46. When the belt 41 is subjected to force, it can be transmitted to the swing arm 46 through the guide wheel 44, so that the swing arm 46 rotates on the side wall of the first support block 21 and drives The guide wheel 44 achieves the effect of approaching one end of the rotor body 3, and when the swing arm 46 is rotated under force, since one end of the connecting shaft is rotatably connected to the second roller 45, the second roller 45 and the guide wheel 44 are coaxially arranged, and when the guide wheel 44 approaches one end of the rotor body 3, the second roller 45 will also approach one end of the rotor body 3, and when the second roller 45 approaches one end of the rotor body 3, the second roller 45 actually guides the rotor body 3, that is, when the rotor body 3 is driven by the driving unit 4, the second roller 45 guides and limits one end of the rotor body 3.

[0027] like Figures 5 and 6 , Fig. 9 , Fig.10 As shown, the driving unit 4 further includes: a tensioning wheel 47 coaxially arranged with the swing arm 46 , and teeth 4601 fixedly connected to the outer peripheral surface of the other end of the swing arm 46 ; the other ends of the two swing arms 46 are meshed through the teeth 4601 .

[0028] Since the rotor body 3 may deviate from the center line of the bottom frame 1 when it is placed, that is, the rotor body 3 deviates to one side of the bottom frame 1 after it is placed, in order to make the rotor body 3 located in the middle of the bottom frame 1 when it is placed, in one embodiment of the present invention, when one end of the rotor body 3 squeezes the belt 41 and causes the belt 41 to be concave downward, it will drive the guide wheel 44 to move, and the guide wheel 44 drives the swing arm 46 to rotate on the first support block 21. Since the outer peripheral surface of the bottom of the swing arm 46 is provided with teeth 4601, and the teeth 4601 at the bottom of the two swing arms 46 are meshed, when one swing arm 46 rotates, the other swing arm 46 will synchronously deflect in the opposite direction, and then the two swing arms 46 will rotate in opposite directions. The sub-body 3 has the effect of correcting the deviation. In addition, a tensioning wheel 47 is coaxially arranged on the swing arm 46, and a torsion spring is arranged on the connecting shaft between the swing arm 46 and the side wall of the first support block 21. When the rotor body 3 does not contact the belt 41, the swing arm 46 drives the guide wheel 44 to expand outward, thereby stretching the belt 41. At this time, the tensioning wheel 47 is on the inner side of the belt 41 and does not contact the belt 41. After the rotor body 3 contacts the belt 41, the belt 41 is concave downward and the swing arm 46 is deflected. At this time, the tensioning wheel 47 squeezes the belt 41 from the inside, so that the belt 41 is tightened. After the motor is started, it can ensure that the belt 41 transmits power stably, thereby driving the rotor body 3 to rotate.

[0029] like Figure 1 to Figure 2 , Figures 7 and 8 As shown, the detection unit 5 also includes: a movable plate 53 slidably connected to one side of the fixed frame 51; a partition 5101 fixedly connected to one side of the fixed frame 51, and a spring shaft 54 ​​fixedly connected to the bottom of the partition 5101; a waist-shaped groove 5102 is provided at the bottom of the fixed frame 51, and a support plate 5301 is fixedly connected to one side of the movable plate 53 adjacent to the fixed frame 51, and the support plate 5301 is slidably connected in the waist-shaped groove 5102; the spring shaft 54 ​​is slidably connected to the top of the movable plate 53; and the bottom of the movable plate 53 is snap-fitted with the first slope 82.

[0030] When the rotor body 3 is placed on the bottom frame 1, the middle part of the rotor body 3 will squeeze the trigger plate 6, thereby causing one end of the trigger plate 6 adjacent to the detection unit 5 to tilt up, thereby unlocking the detection unit. Based on the above, in one embodiment of the present invention, a movable plate 53 is provided on one side of the fixed frame 51, and the movable plate 53 maintains a sliding fit with the fixed plate via the support plate 5301 and the spring shaft 54. When one end of the trigger plate 6 tilts up, the movable plate 53 can be squeezed to move upward, thereby separating the movable plate 53 from the first slope 82. When the movable plate 53 is separated from the first slope 82, the fixed frame 51 can be displaced toward the second support block 22, and then be sleeved on the other end of the rotor body 3. After the motor is started, the sensor 52 on the fixed frame 51 can be used to detect the dynamic balance of the rotor body 3.

[0031] like Figures 7 and 8As shown, the side wall of the second support block 22 is fixedly connected with a guide shaft 25, and the fixing frame 51 is slidably connected to the guide shaft 25; a second spring 26 is sleeved on the guide shaft 25, and the two ends of the second spring 26 are respectively fixedly connected to the second support block 22 and the fixing frame 51.

[0032] Based on the above, when the movable plate 53 is separated from the first slope 82, due to the elastic potential energy of the second spring 26, the fixing frame 51 can be pulled toward the second support block 22, so that the fixing frame 51 is sleeved on the other end of the rotor body 3, so that the dynamic balance of the rotor body 3 can be detected when the rotor body 3 rotates, wherein the fixing frame 51 is slidably matched with the guide shaft 25.

[0033] like Figures 1 to 4 , Figure 8 As shown, a movable groove 27 is opened in the middle of the second support block 22, and the trigger rod 8 is rotatably connected in the movable groove 27 via the pin shaft 81; a second slope 83 is also provided at one end of the trigger rod 8 adjacent to the fixing frame 51, and the second slope 83 is used to assist the movable plate 53 to disengage from the first slope 82.

[0034] Since the trigger rod 8 plays the function of controlling the unlocking of the detection unit 5, in one embodiment of the present invention, a movable groove 27 is opened in the middle of the second support block 22, and the trigger rod 8 is rotatably connected in the movable groove 27. When one end of the trigger rod 8 is squeezed by the rotor body 3, the other end of the trigger rod 8 can be lifted through the seesaw principle, so that the movable plate 53 is separated from the first slope 82. It is worth noting that a second slope 83 is arranged at a position adjacent to the first slope 82. The second slope 83 can be used to squeeze the movable plate 53 to move upward until the movable plate 53 is separated from the first slope 82. A torsion spring is arranged between the pin shaft 81 arranged in the movable groove 27 and the trigger rod 8, and the torsion spring can be used to assist in resetting the trigger rod 8.

[0035] like Figures 1 to 4 , Figure 7 As shown, it also includes a trigger plate 6; a first spring 11 is fixed between the trigger plate 6 and the bottom frame 1, and the first spring 11 is arranged between the first support block 21 and the second support block 22; spring pins 61 are penetrated and connected at the four corners of the trigger plate 6, and the trigger plate 6 is slidably connected to the side wall of the bottom frame 1 through the spring pins 61.

[0036] In order to prevent the trigger rod 8 from directly contacting the rotor body 3, causing the rotor body 3 to be affected during the rotation process, in one embodiment of the present invention, a trigger plate 6 is arranged in the middle of the bottom frame 1. When the rotor body 3 is placed in the bottom frame 1, the trigger plate 6 can be contacted, and then the trigger plate 6 contacts the trigger rod 8, so as to control the movement of the trigger rod 8. The spring pins 61 arranged at the four corners of the trigger plate 6 are used to connect the side wall of the bottom frame 1, and the first spring 11 arranged between the trigger plate 6 and the bottom frame 1 is used to control the reset of the trigger plate 6 when it is not under force.

[0037] like Figure 7 As shown, a connecting frame is fixedly connected to the trigger plate 6, and a plurality of third rollers 7 are rotatably connected to the connecting frame; the third rollers 7 are used to guide the rotor body 3 to rotate.

[0038] Based on the above, the contact between the trigger plate 6 and the rotor body 3 is specifically that the third roller 7 on the trigger plate 6 contacts the rotor body 3 . When the rotor body 3 rotates, the third roller 7 can be relied upon to provide guidance and limiting functions for the rotor body 3 .

[0039] like Figure 7 As shown, a clamping plate 62 is fixedly connected to one end of the bottom of the trigger plate 6 adjacent to the trigger rod 8 , and the trigger rod 8 is clamped and matched with the clamping plate 62 .

[0040] In order to facilitate accurate contact between the trigger plate 6 and the trigger rod 8, a clamping plate 62 is provided at the bottom of the trigger plate 6. When the trigger plate 6 contacts the trigger rod 8, the trigger rod 8 can be accurately controlled by clamping the clamping plate 62 with the trigger rod 8.

[0041] Working principle: When the rotor body 3 is dynamically balanced, the rotor body 3 is first placed in the bottom frame 1 from top to bottom, and the two ends of the rotor body 3 will naturally rest on the support modules 2 at the two ends of the bottom frame 1. Before one end of the rotor body 3 rests on the support module 2, one end of the rotor body 3 will preferentially contact the belt 41, and under the influence of the weight of the rotor body 3 itself, the belt 41 is squeezed to produce a downward concave deformation. When the belt 41 is deformed downward, since the guide wheel 44 is movably connected to the support module 2, when the belt 41 is deformed downward, it will drive the guide wheel 44 to move closer to one end of the rotor body 3, thereby achieving a large-area contact between the belt 41 and one end of the rotor body 3, wherein the driving guide wheel 42 is driven by the transmission shaft 43, and the transmission shaft 43 is fixedly connected to the output end of the external motor. Therefore, when the external motor is started, the driving guide wheel 42 can be driven to rotate through the transmission shaft 43, thereby driving the belt 41 to rotate. Since the belt 41 is in large-area contact with one end of the rotor body 3 at this moment, the purpose of driving the rotor body 3 to rotate can be achieved; In addition, when the other end of the rotor body 3 rests on the supporting module 2, the trigger rod 8 in the bottom frame 1 is squeezed by the middle of the rotor body 3, so that the trigger rod 8 is tilted adjacent to one end of the detection unit 5. When one end of the trigger rod 8 is tilted, it can squeeze the fixing frame 51 to separate it from the first slope 82, thereby completing the unlocking of the detection unit 5, so that the detection unit 5 can be sleeved on the other end of the rotor body 3. When the rotor body 3 is driven by the driving unit 4 to rotate, the amplitude of the rotor body 3 caused by the rotation imbalance is recorded by relying on the multiple sensors 52 arranged on the fixing frame 51, thereby realizing the detection of the rotor body. 3 dynamic balance detection; therefore, by setting the driving unit 4 and the detection unit 5, when the rotor body 3 is placed, the rotor body 3 can be locked by relying on its own weight, and then the motor is started by controlling the belt 41 in the driving unit 4 to drive the rotor body 3 to rotate, and the dynamic balance of the rotor body 3 is detected in cooperation with the sensor 52 in the detection unit, without the need for multi-step operation, reducing the error that may occur in the multi-step operation, thereby improving the authenticity of the dynamic balance detection of the rotor body 3, and facilitating the operation. When the dynamic balance of a large number of rotor bodies 3 needs to be detected, the detection steps are simplified.

[0042] When one end of the rotor body 3 contacts the belt 41, the belt 41 will be depressed downwards under the action of its own weight. When the belt 41 is depressed downwards, it will drive the two guide wheels 44 to move closer to one end of the rotor body 3. In one embodiment of the present invention, a swing arm 46 rotatably connected to the side wall of the first support block 21 is used to support the guide wheel 44, that is, the guide wheel 44 is rotatably connected to one end of the swing arm 46. When the belt 41 is subjected to force, it can be transmitted to the swing arm 46 through the guide wheel 44, so that the swing arm 46 rotates on the side wall of the first support block 21. The guide wheel 44 is driven to approach one end of the rotor body 3, and when the swing arm 46 is rotated by force, since one end of the connecting shaft is rotatably connected to the second roller 45, the second roller 45 is coaxially arranged with the guide wheel 44. When the guide wheel 44 approaches one end of the rotor body 3, the second roller 45 also approaches one end of the rotor body 3. When the second roller 45 approaches one end of the rotor body 3, the second roller 45 actually guides the rotor body 3, that is, when the rotor body 3 is driven by the driving unit 4, the second roller 45 guides the rotor body 3. 3 is guided and limited; when one end of the rotor body 3 squeezes the belt 41 and causes the belt 41 to be concave downward, it will drive the guide wheel 44 to move, and the guide wheel 44 drives the swing arm 46 to rotate on the first support block 21. Since the outer peripheral surface of the bottom of the swing arm 46 is provided with teeth 4601, and the teeth 4601 at the bottom of the two swing arms 46 are meshed, when one swing arm 46 rotates, the other swing arm 46 will synchronously deflect in the opposite direction, and then the rotor body 3 is corrected by the two swing arms 46. In addition, a tensioning wheel 4 is coaxially provided on the swing arm 46. 7. A torsion spring is arranged on the connecting shaft between the swing arm 46 and the side wall of the first support block 21. When the rotor body 3 does not contact the belt 41, the swing arm 46 drives the guide wheel 44 to expand outward, thereby stretching the belt 41. At this time, the tensioning wheel 47 is on the inner side of the belt 41 and does not contact the belt 41. After the rotor body 3 contacts the belt 41, the belt 41 is concave downward and the swing arm 46 is deflected. At this time, the tensioning wheel 47 squeezes the belt 41 from the inside, so that the belt 41 is tightened. After the motor is started, it can ensure that the belt 41 transmits power stably, thereby driving the rotor body 3 to rotate.

[0043] A movable plate 53 is provided on one side of the fixed frame 51, and the movable plate 53 maintains a sliding fit relationship with the fixed plate via the support plate 5301 and the spring shaft 54. When one end of the trigger plate 6 is tilted, the movable plate 53 can be squeezed to move upward, so that the movable plate 53 is separated from the first slope 82. When the movable plate 53 is separated from the first slope 82, the fixed frame 51 can be moved toward the second support block 22, and then be sleeved on the other end of the rotor body 3. When the motor is started, the sensor 52 on the fixed frame 51 can be used to detect the dynamic balance of the rotor body 3; when the movable plate 53 is separated from the first slope 82, due to the elastic potential energy of the second spring 26, the fixed frame 51 can be pulled to move toward the second support block 22, so that the fixed frame 51 is sleeved on the other end of the rotor body 3, so that the dynamic balance of the rotor body 3 is detected when the rotor body 3 rotates, wherein the fixed frame 51 is slidably matched with the guide shaft 25.

[0044] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A detection device for a motor shaft, comprising: A bottom frame (1), wherein two ends of the bottom frame (1) are respectively provided with a driving unit (4) and a detection unit (5); A support module (2), the support module (2) being arranged at both ends of the bottom frame (1), and the drive unit (4) and the detection unit (5) being fixedly connected to the bottom frame (1) via the support module (2); The driving unit (4) comprises: A transmission shaft (43) fixedly connected to the output end of the motor; A driving guide wheel (42) fixedly connected to a transmission shaft (43); two guide wheels (44) movably connected to the side walls of the support module (2), and A belt (41) sleeved between a driving guide wheel (42) and a guide wheel (44); The detection unit (5) comprises: a fixing frame (51) slidably connected to the supporting module (2), and A plurality of sensors (52) arranged on the fixing frame (51) and used for detecting the dynamic balance of the rotor body (3); Features: It also comprises a trigger rod (8), the middle part of which is hinged in the support module (2) via a pin shaft (81); a torsion spring is sleeved on the pin shaft (81); a first slope (82) is provided at one end of the trigger rod (8) adjacent to the fixing frame (51); and the first slope (82) is snap-fitted with the bottom of the fixing frame (51).

2. A detection device for a motor shaft according to claim 1, characterized in that: The support module (2) comprises: A first supporting block (21) provided with a driving unit (4); A second supporting block (22) provided with a detection unit (5); Rotating a first roller (24) connected to the first support block (21) and the second support block (22); A clearance groove (23) is provided on the surface of the first support block (21) and the second support block (22).

3. The detection device for a motor shaft according to claim 1, characterized in that: The driving unit (4) further comprises: A swing arm (46) rotatably connected to the side wall of the first support block (21) through the warp axis; a connecting shaft fixedly connected to one end of the swing arm (46), and Rotating a second roller (45) connected to one end of the connecting shaft; The other end of the swing arm (46) is rotatably connected to the side wall of the first support block (21) via an axis; the transmission shaft (43) passes through the side wall of the first support block (21); and the guide wheel (44) is rotatably connected to the other end of the connecting shaft.

4. The detection device for a motor shaft according to claim 3, characterized in that: The driving unit (4) further comprises: a tensioning wheel (47) arranged coaxially with the swing arm (46), and A tooth (4601) fixedly connected to the outer peripheral surface of the other end of the swing arm (46); The other ends of the two swing arms (46) are meshed via teeth (4601).

5. The detection device for a motor shaft according to claim 1, characterized in that: The detection unit (5) further comprises: A movable plate (53) slidably connected to one side of the fixed frame (51); a partition plate (5101) fixedly connected to one side of the fixing frame (51), and A spring shaft (54) fixedly connected to the bottom of the partition (5101); The bottom of the fixed frame (51) is provided with a waist-shaped groove (5102), and a support plate (5301) is fixedly connected to one side of the movable plate (53) adjacent to the fixed frame (51), and the support plate (5301) is slidably connected in the waist-shaped groove (5102); the spring shaft (54) is slidably connected to the top of the movable plate (53); and the bottom of the movable plate (53) is snap-fitted with the first slope (82).

6. The detection device for a motor shaft according to claim 2, characterized in that: A guide shaft (25) is fixedly connected to the side wall of the second support block (22), and the fixing frame (51) is slidably connected to the guide shaft (25); a second spring (26) is sleeved on the guide shaft (25), and two ends of the second spring (26) are respectively fixedly connected to the second support block (22) and the fixing frame (51).

7. The detection device for a motor shaft according to claim 2, characterized in that: A movable groove (27) is provided in the middle of the second support block (22), and the trigger rod (8) is rotatably connected in the movable groove (27) via a pin shaft (81); a second slope (83) is also provided at one end of the trigger rod (8) adjacent to the fixing frame (51), and the second slope (83) is used to assist the movable plate (53) to disengage from the first slope (82).

8. The detection device for a motor shaft according to claim 1, characterized in that: It also includes a trigger plate (6); a first spring (11) is fixedly connected between the trigger plate (6) and the bottom frame (1), and the first spring (11) is arranged between a first support block (21) and a second support block (22); spring pins (61) are penetrated and connected at four corners of the trigger plate (6), and the trigger plate (6) is slidably connected to the side wall of the bottom frame (1) via the spring pins (61).

9. The detection device for a motor shaft according to claim 8, characterized in that: A connecting frame is fixedly connected to the trigger plate (6), and a plurality of third rollers (7) are rotatably connected to the connecting frame; the third rollers (7) are used to guide the rotor body (3) to rotate.

10. The detection device for a motor shaft according to claim 9, characterized in that: A clamping plate (62) is fixedly connected to one end of the bottom of the trigger plate (6) adjacent to the trigger rod (8), and the trigger rod (8) is clamped and matched with the clamping plate (62).

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