New energy automobile motor rotor shaft runout detection device

Abstract

The invention belongs to the technical field of rotor shaft detection, and discloses a new energy automobile motor rotor shaft run-out detection device, which comprises a base for placing a motor. Through cooperation of structures such as the conversion assembly and the surveying and mapping assembly I, a rotor shaft pushes a metal ring I to swing and presses hydraulic oil in a hydraulic rod in the swing direction to enter an oil box, and the hydraulic oil pushes a push rod to swing a corresponding telescopic rod through an oil pipe I; the moving values of every two adjacent push rods can be displayed on the same surveying and mapping disc through the corresponding telescopic rods, the two push rods are vertically and transversely distributed in the metal frame respectively, and the swing amplitudes of the rotor shaft in two different directions can be visually seen. Therefore, the time for repeatedly replacing the measuring position by an operator through a micrometer and the consumed labor force are reduced, the swing amplitude of the rotor shaft of the motor at different rotating speeds can be detected at the same time, the test value is more suitable for the actual application scene, and the obtained data is more comprehensive.

Description

Technical Field

[0001] The present invention belongs to the technical field of rotor shaft detection, and in particular is a device for detecting rotor shaft runout of a new energy vehicle motor. Background Art

[0002] The motor of a new energy vehicle primarily provides the vehicle's power. The rotor shaft is the motor's core support. When the motor is operating, the rotor shaft must maintain concentricity and dynamic balance, which directly affects the efficiency and reliability of the motor's power transmission. Large fluctuations in the rotor shaft's rotation will increase the motor's iron loss and magnetic resistance, shortening its service life. The resulting vibrations and whistling will also affect the driving experience.

[0003] In the prior art, micrometers or vernier meters are used for measurement in most cases. However, this measurement method requires the rotor shaft to be stationary or slowly rotating, and manual work needs to constantly change the position of the measuring instrument to obtain different data, which increases the workload year-on-year. The obtained value may also be that the internal parts are not completely in the working position. After normal operation, whether the internal parts will slowly slide back to the corresponding position, there will be no vibration. This measurement method is also very likely to cause misjudgment, which also indirectly increases the workload of the maintenance department. Therefore, it is necessary to provide a new energy vehicle motor rotor shaft vibration detection device. Summary of the Invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides a new energy vehicle motor rotor shaft vibration detection device, which solves the need for manual operation to constantly change the position of the measuring instrument. After normal operation, whether the internal parts will slowly slide back to the corresponding position, there will be no vibration. This measurement method is also very likely to cause misjudgment.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a device for detecting rotor shaft runout of a new energy vehicle motor, comprising a base for placing the motor, and further comprising;

[0006] An interference component and a conversion component are respectively arranged at two ends of the top of the base;

[0007] A second surveying and mapping component disposed on the conflicting component;

[0008] Two surveying and mapping components symmetrically arranged on the top of the base;

[0009] The first surveying and mapping component includes a bracket slidably mounted on the top of the base, a surveying and mapping disc is fixedly mounted on the outer side of the bracket, an angle groove is provided on the surveying and mapping disc, and two telescopic rods are rotatably mounted on the outer side of the surveying and mapping disc;

[0010] The conversion assembly includes a metal ring and a metal frame slidably mounted on the top of the base. An oil box is installed on each of the four walls inside the metal frame. The oil box is filled with hydraulic oil. Two hydraulic rods connected to the ball shaft of the metal ring are provided on the oil box. The hydraulic rods are connected to the oil box through an oil guide pipe. A push rod is hinged at the end of the telescopic rod. The oil box is connected to an oil pipe. The push rod moves inside the oil pipe.

[0011] Every two adjacent push rods are respectively hinged to two telescopic rods in one surveying and mapping component;

[0012] The invention relates to a docking assembly which is slidably mounted inside a metal ring and is used for docking the end of the rotor shaft.

[0013] Preferably, the hinged portion of the push rod end is sleeved on the telescopic rod, the push rod seal moves on the end of the oil pipe 1, and the ends of every two push rods connected to two adjacent oil boxes through the oil pipe 1 are located in the same horizontal plane.

[0014] Preferably, a positioning groove is provided on the top of the base;

[0015] The conversion assembly further comprises a latch inserted into the metal frame, and the latch is matched with the positioning groove.

[0016] Preferably, the docking assembly includes a receiving ring slidably mounted inside a metal ring, the internal thread of the receiving ring is connected to a driving ring, the end of the driving ring is rotatably mounted with a supporting plate, a group of positioning plates are arranged in an equidistant array along the circumference of the supporting plate, the positioning plates can slide in the radial direction of the supporting plate, and the contact surfaces of the positioning plates and the receiving ring are inclined to each other.

[0017] Preferably, lubricating oil is applied between the receiving ring and the positioning plate, and an anti-slip groove is provided on the outer side of the driving ring.

[0018] Preferably, the interference assembly includes a positioning box mounted on the top of the base, an oil storage box is sleeved on the positioning box, a ball shaft on the side of the oil storage box is connected to a second bearing plate, the second bearing plate is made of silicone material, the positioning box is elastically connected to a pull rod that movably passes through the side thereof via a tension spring, and a sealing disk 1 is installed at one end of the pull rod located inside the oil storage box;

[0019] The interior of the positioning box is installed with an oil pipe 2 connected to the interior of the oil storage box. The oil pipe 2 is provided with a solenoid valve. The oil pipe 2 is connected to the surveying and mapping component 2. The oil storage box and the oil pipe 2 are both filled with hydraulic oil.

[0020] Preferably, the oil pipe 2 and the solenoid valve constitute an oil controller. There are two oil controllers in total and they are symmetrically distributed inside the positioning box. The oil pipe 2 located below is thicker than the oil pipe 2 above. The resistance component also includes a sealing plate elastically connected to the lower oil pipe 2 through a spring.

[0021] Preferably, the second surveying and mapping component includes a glass tube installed on the side of the positioning box and connected to the second oil pipe above, a group of scale grooves are provided on the outer circumference of the glass tube, and protective plates are symmetrically and slidably installed on the side of the positioning box, and a magnet 1 is provided inside each of the protective plates. A sealing disk 2 is slidably installed inside the glass tube, and a metal disk is placed on the top of the sealing disk 2, and a gap is reserved between the outer circumference of the metal disk and the inner wall of the glass tube.

[0022] Preferably, the second surveying and mapping component also includes a second beveled tooth plate fixedly mounted on the side of the positioning box, a second metal ring is movably sleeved on the periphery of the glass tube, the inner wall of the second metal ring is supported on the periphery of the glass tube by a spring sheet, a first beveled tooth plate meshing with the second beveled tooth plate is installed on the side of the second metal ring, and a second magnet is installed on the bottom of the second sealing disk.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present invention cooperates with a conversion component and a surveying component in a structure. The rotor shaft pushes the metal ring to swing and compresses the hydraulic oil inside the hydraulic rod in the swinging direction to enter the oil box. The hydraulic oil pushes the push rod to swing the corresponding telescopic rod through the oil pipe. The movement value of each two adjacent push rods can be displayed on the same surveying disc through the corresponding telescopic rod. The two push rods are respectively distributed vertically and horizontally inside the metal frame, and the swing amplitude of the rotor shaft in two different directions can be intuitively seen, thereby reducing the time and labor consumed by the operator to repeatedly change the measuring position through the micrometer. It can also simultaneously detect the swing amplitude of the motor's rotor shaft at different rotation speeds, so that the test value is more in line with the actual application scenario and the obtained data is more comprehensive.

[0025] The present invention cooperates with structures such as a conversion component and a docking component. The rotating drive ring pushes each positioning plate through the carrier plate 1, and the inner diameter of the positioning plate is gradually shortened. Several positioning plates will be gradually tightened on the rotor shaft. Since the drive ring is rotatably connected to the carrier plate 1, when the positioning plate is in a tightened state, the drive ring can still rotate, so that the positioning plate can be better tightened on the rotor shaft, but will not force the positioning plate to scratch the rotor shaft. This will also be applicable to rotor shafts of different sizes. When the rotor shaft is subjected to a lateral reciprocating impact, the receiving ring can also slide inside the metal ring 1, so that the metal frame will not be forced to move forcibly through the docking component and cause the pin to break. The conversion component can still record the amplitude of the rotor shaft swing, further improving the smoothness of the device operation.

[0026] The present invention cooperates with the structures of the resistance component and the surveying component. The second supporting plate is tightly attached to and fixes the end of the rotor shaft. The connection between the second supporting plate and the oil storage box ball shaft does not affect the rotation, and its end does not swing, but amplifies the amplitude of the rotation and swing of the rotor shaft, and clearly records the value pointed by the telescopic rod. When the rotor shaft reciprocates, the hydraulic oil inside the oil storage box is squeezed by the second supporting plate and enters the interior of the glass tube through the second oil pipe above. The oil pressure pushes the second magnet to rise. According to the scale groove on the glass tube, the values calibrated by the second metal ring and the metal disk can be read respectively, and the distance the rotor shaft has moved can be calculated, as well as various values that help staff identify whether the rotor shaft has abnormalities. This can effectively detect whether the rotor shaft moving distance is within the specified process requirements, thereby making the detection data more in line with the actual situation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the appearance structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the structure of the base and the conversion assembly of the present invention;

[0029] Figure 3 This is a schematic diagram of the structural coordination between the conversion assembly and the docking assembly of the present invention;

[0030] Figure 4 This is a split front view of the conversion assembly structure of the present invention;

[0031] Figure 5 Schematic diagram of the cross-section of the internal structure of the docking assembly of the present invention;

[0032] Figure 6 This is a schematic diagram of the exploded view of the docking assembly structure of the present invention;

[0033] Figure 7 This is a schematic diagram of the structure coordination between the interference component and the surveying and mapping component of the present invention;

[0034] Figure 8 Schematic diagram of the cross-section of the internal structure of the interference assembly of the present invention;

[0035] Figure 9 This is a schematic diagram of the structural coordination between the positioning box and the surveying and mapping component of the present invention;

[0036] Figure 10 This is a schematic diagram of the internal structure of the second surveying and mapping component of the present invention.

[0037] In the figure: 1. Base; 11. Positioning slot; 2. Mapping assembly 1; 21. Bracket; 22. Telescopic rod; 23. Mapping disc; 3. Conversion assembly; 31. Metal frame; 311. Latch; 32. Metal ring 1; 33. Oil box; 34. Hydraulic rod; 35. Oil pipe 1; 36. Push rod; 4. Docking assembly; 41. Adapter ring; 42. Drive ring; 43. Load plate 1; 44. Positioning plate; 5. Resistance assembly; 51. Fixed Position box; 52. Pull rod; 53. Sealing disk 1; 54. Tension spring; 55. Oil storage box; 56. Loading plate 2; 57. Oil pipe 2; 58. Spring; 59. Sealing plate; 50. Solenoid valve; 6. Surveying and mapping component 2; 61. Glass tube; 62. Protective plate; 63. Magnet 1; 64. Metal ring 2; 65. Spring sheet; 66. Bevel gear plate 1; 67. Bevel gear plate 2; 68. Sealing disk 2; 69. Metal disk; 60. Magnet 2. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0039] like Figures 1 to 10 As shown, the present invention provides a new energy vehicle motor rotor shaft runout detection device, comprising a base 1 for placing the motor, and further comprising;

[0040] The interference component 5 and the conversion component 3 are respectively arranged at two ends of the top of the base 1;

[0041] A second surveying and mapping component 6 disposed on the interference component 5;

[0042] Two surveying and mapping components 1-2 are symmetrically arranged on the top of the base 1;

[0043] The surveying and mapping component 1 2 includes a bracket 21 slidably mounted on the top of the base 1, a surveying and mapping disc 23 is fixedly mounted on the outside of the bracket 21, an angle groove is provided on the surveying and mapping disc 23, and two telescopic rods 22 are rotatably mounted on the outside of the surveying and mapping disc 23;

[0044] The conversion assembly 3 includes a metal ring 32 and a metal frame 31 slidably mounted on the top of the base 1. An oil box 33 is installed on each of the four walls inside the metal frame 31. The oil box 33 is filled with hydraulic oil. The oil box 33 is provided with two hydraulic rods 34 connected to the ball shaft of the metal ring 32. The hydraulic rods 34 are connected to the oil box 33 through an oil guide pipe. A push rod 36 is hinged at the end of the telescopic rod 22. The oil box 33 is connected to an oil pipe 35. The push rod 36 moves inside the oil pipe 35.

[0045] Every two adjacent push rods 36 are respectively hinged to two telescopic rods 22 in a surveying and mapping component 1 2;

[0046] A docking assembly 4 is slidably mounted inside the metal ring 32 and is used to dock the end of the rotor shaft.

[0047] The hinged portion of the end of the push rod 36 is sleeved on the telescopic rod 22, and the push rod 36 is sealed and movable on the end of the oil pipe 1 35. The ends of each two push rods 36 connected to two adjacent oil boxes 33 through the oil pipe 1 35 are located in the same horizontal plane.

[0048] Adopt the above solution: first place the motor on top of the base 1 and fix it;

[0049] Then, the abutment assembly 5 is controlled to abut against one end of the motor rotor shaft, and the metal frame 31 is slid so that the docking assembly 4 is sleeved and fixed on the other end of the rotor shaft;

[0050] Apply power to the motor, causing the rotor shaft inside it to spin;

[0051] When the rotor shaft swings, it pushes the metal ring 1 32 to swing in the same manner, and compresses the hydraulic rod 34 in the swinging direction, causing the hydraulic oil in the rod to enter the oil box 33 through the oil guide pipe. The hydraulic oil then pushes the push rod 36 through the oil pipe 1 35 to swing the corresponding telescopic rod 22. Since the end of the telescopic rod 22 is hinged to the axis of the surveying disk 23 and the telescopic rod 22 is also provided with an angle slot, the operator can confirm whether the working state of the rotor shaft meets the specified process values by checking the degree of swing direction of the telescopic rod 22.

[0052] Since there are four oil boxes 33 distributed inside the metal frame 31, the swing of the rotor shaft in four directions can be detected. The movement values of every two adjacent push rods 36 can be displayed on the same surveying disk 23 through the telescopic rod 22. The two push rods 36 are respectively distributed vertically and horizontally inside the metal frame 31. By comparing the values displayed by the two push rods 36 on the same surveying disk 23, the swing amplitude of the rotor shaft in two different directions can be intuitively seen.

[0053] This reduces the time and labor required for operators to repeatedly change the measurement position using a micrometer. It can also simultaneously detect the swing amplitude of the motor's rotor shaft at different rotational speeds, making the test values more suitable for actual application scenarios and the data obtained more comprehensive.

[0054] It is also important to note that the bracket 21 can slide on the top of the base 1. The operator can slide the bracket 21 so that the axis of the mapping disk 23 is located at the midpoint or end of the rotor shaft. This can be selected according to actual process requirements. Furthermore, the range of detection of the device can be wider and more suitable for different detection processes.

[0055] like Figures 1-4 As shown, a positioning groove 11 is provided on the top of the base 1;

[0056] The conversion assembly 3 further includes a latch 311 inserted into the metal frame 31 , and the latch 311 is adapted to the positioning slot 11 .

[0057] With the above solution, the end of the rotor shaft can be easily withdrawn from the docking assembly 4 by sliding the metal frame 31. When facing motors of different specifications, the metal frame 31 can also be adjusted to a suitable position and locked by the latch 311 and the positioning slot 11, so that after the position is changed, the metal frame 31 can still remain stable during the test work.

[0058] like Figures 1-6 As shown, the docking assembly 4 includes a receiving ring 41 slidably mounted inside the metal ring 32, the internal thread of the receiving ring 41 is connected to the driving ring 42, the end of the driving ring 42 is rotatably mounted with a supporting plate 43, and a group of positioning plates 44 are arranged in an equidistant array along the circumference of the supporting plate 43. The positioning plates 44 can slide in the radial direction of the supporting plate 43, and the contact surfaces of the positioning plates 44 and the receiving ring 41 are inclined to each other.

[0059] Lubricating oil is applied between the receiving ring 41 and the positioning plate 44 , and an anti-slip groove is provided on the outer side of the driving ring 42 .

[0060] The above solution is adopted: the metal frame 31 is moved so that the rotor shaft is located inside the receiving ring 41, and the driving ring 42 is rotated so that it pushes each positioning plate 44 through the supporting plate 1 43. The inclined portion of the positioning plate 44 and the receiving ring 41 gradually shortens the inner diameter of the positioning plate 44, and several positioning plates 44 are gradually tightened on the rotor shaft. Since the driving ring 42 is rotatably connected to the supporting plate 1 43, when the positioning plate 44 is in a tightened state, the driving ring 42 can still rotate, thereby enabling the positioning plate 44 to be better tightened on the rotor shaft without forcing the positioning plate 44 to scratch the rotor shaft. This is also applicable to rotor shafts of different sizes, thereby improving the applicability of the device.

[0061] Since lubricating oil is applied between the positioning plate 44 and the receiving ring 41, the loss between the receiving ring 41 and the positioning plate 44 is reduced during the rotation of the rotor shaft, thereby reducing the maintenance cycle of the device and effectively reducing the impact on the rotation speed of the rotor shaft.

[0062] When the rotor shaft experiences a lateral reciprocating impact, the receiving ring 41 can also slide inside the metal ring 32, thereby preventing the metal frame 31 from being forced to move through the docking assembly 4 and causing the pin 311 to break. The conversion assembly 3 can still record the amplitude of the rotor shaft swing, further improving the smoothness of the device operation.

[0063] like Figures 1-8 As shown, the interference assembly 5 includes a positioning box 51 mounted on the top of the base 1, and an oil storage box 55 is sleeved on the positioning box 51. The side ball shaft of the oil storage box 55 is connected to a second bearing plate 56, and the second bearing plate 56 is made of silicone. The positioning box 51 is elastically connected to a pull rod 52 that runs through its side through a tension spring 54. A sealing disk 53 is installed at one end of the pull rod 52 located inside the oil storage box 55.

[0064] The interior of the positioning box 51 is installed with an oil pipe 57 that is connected to the interior of the oil storage box 55. The oil pipe 57 is provided with a solenoid valve 50. The oil pipe 57 is connected to the surveying and mapping component 6. The oil storage box 55 and the oil pipe 57 are both filled with hydraulic oil.

[0065] Oil pipe 2 57 and solenoid valve 50 constitute an oil controller. There are two oil controllers in total and they are symmetrically distributed inside the positioning box 51. The lower oil pipe 2 57 is thicker than the upper oil pipe 2 57. The resistance component 5 also includes a sealing plate 59 elastically connected to the lower oil pipe 2 57 by a spring 58.

[0066] Adopting the above solution: closing the upper solenoid valve 50 and opening the lower solenoid valve 50, the sealing plate 1 53 is pulled by the pull rod 52. Since the oil reservoir 55 is filled with hydraulic oil, some hydraulic oil will flow into the lower oil pipe 2 57 at this time, pushing the sealing plate 59 to compress the spring 58, so that the oil reservoir 55 is driven by the oil pressure to move;

[0067] When hoisting the motor to the top of the base 1, ensure that the end of its rotor shaft is not too far away from the second bearing plate 56. After releasing the pull rod 52, the tension spring 54 forces the sealing disk 1 53 and the oil storage box 55 to return to their original positions, so that the second bearing plate 56 is close to the end of the rotor shaft, thereby fixing the end. However, since the second bearing plate 56 and the oil storage box 55 are connected by a ball shaft, this does not affect the rotation of the rotor shaft, but the fixed end will not swing, thereby amplifying the amplitude of the rotor shaft rotation and swing, so that the operator can more clearly see and record the value pointed by the telescopic rod 22;

[0068] Then, the lower solenoid valve 50 is closed and the upper solenoid valve 50 is opened. When the rotor shaft experiences a reciprocating impact, it forces the oil reservoir 55 to move through the second carrier plate 56, and squeezes the hydraulic oil inside the oil reservoir 55 into the second surveying and mapping component 6 through the second upper oil pipe 57. The hydraulic oil is then displayed by the second surveying and mapping component 6. This can effectively detect whether the rotor shaft movement distance is within the specified process requirements, thereby making the test data more in line with the actual situation.

[0069] Compared with the torque generated by the engine, the instantaneous torque generated by the motor of a new energy vehicle when it is energized is very large. The silicone material used in the bearing plate 56 can effectively bear the rotational torque of the rotor shaft without causing scratches on the end of the rotor shaft, thereby ensuring the quality of the manufactured product.

[0070] It should be noted that the material of the second carrier plate 56 is not limited to silicone. The rest of the chemical and physical properties can be the same as those of silicone. The specific material used depends on the actual application.

[0071] like Figures 1-10 As shown, the surveying and mapping component 2 6 includes a glass tube 61 installed on the side of the positioning box 51 and connected to the upper oil pipe 2 57. A group of scale grooves are provided on the outer periphery of the glass tube 61. Protective plates 62 are symmetrically slidably installed on the side of the positioning box 51. A magnet 1 63 is provided inside each protective plate 62. A sealing disk 2 68 is slidably installed inside the glass tube 61. A metal disk 69 is placed on the top of the sealing disk 2 68. A gap is reserved between the outer periphery of the metal disk 69 and the inner wall of the glass tube 61.

[0072] The surveying and mapping component 2 6 also includes a beveled tooth plate 2 67 fixed to the side of the positioning box 51. A metal ring 2 64 is movably sleeved on the periphery of the glass tube 61. The inner wall of the metal ring 2 64 is supported on the periphery of the glass tube 61 by a spring sheet 65. A beveled tooth plate 1 66 engaged with the beveled tooth plate 2 67 is installed on the side of the metal ring 2 64. A magnet 2 60 is installed at the bottom of the sealing disk 2 68.

[0073] With the above solution, when hydraulic oil enters the glass tube 61, the oil pressure pushes the second magnet 60 upward. However, due to the magnetic force between the metal disk 69 and the first magnet 63, the second magnet 60 lifts the metal disk 69 to the limit where the rotor shaft vibrates and the oil pressure rises. The metal disk 69 is then attracted by the first magnet 63 and remains at that position, clearly alerting the staff.

[0074] When the rotor shaft reciprocates, the sealing disk 68 will drop due to the gap between the metal disk 69 and the glass tube 61, but the metal disk 69 will not move.

[0075] Sealing disc 2 68 and magnet 2 60 are simultaneously forced downward by the oil pressure. The magnetic force between metal disc 69 and metal ring 2 64 causes metal ring 2 64 and bevel gear plate 1 66 to descend. Since the upper teeth of bevel gear plate 1 66 face upward, and the upper teeth of bevel gear plate 2 67 face downward, bevel gear plate 1 66 can only descend. Therefore, when sealing disc 2 68 ascends, spring plate 65 pushes bevel gear plate 1 66 to engage with bevel gear plate 2 67, and metal ring 2 64 does not descend with magnet 2 60 and sealing disc 2 68. The friction between bevel gear plate 1 66 and bevel gear plate 2 67 caused by spring plate 65 does not cause metal ring 2 64 to fall, but remains in its moved position.

[0076] Since the glass tube 61 is made of transparent material, the values calibrated by the metal ring 64 and the metal disk 69 can be read respectively according to the scale grooves on the glass tube 61, and the distance of the rotor shaft's movement and whether the reciprocating movement distances are the same can be calculated. Various values can help the staff identify whether there is any abnormality in the rotor shaft, which makes the detection data more complete.

[0077] The working principle and use process of the present invention:

[0078] Close the upper solenoid valve 50 and open the lower solenoid valve 50, pull the sealing disk 1 53 through the pull rod 52, so that the oil storage box 55 is driven by the oil pressure to move;

[0079] Hoist the motor to the top of the base 1, release the pull rod 52, and the tension spring 54 forces the sealing plate 1 53 and the oil storage box 55 back to their original positions, so that the supporting plate 2 56 is close to the end of the rotor shaft, thereby fixing the end. This does not affect the rotation of the rotor shaft, but the fixed end will not swing;

[0080] The rotating driving ring 42 pushes each positioning plate 44 through the bearing plate 1 43. The inclined portion of the positioning plate 44 and the receiving ring 41 gradually shortens the inner diameter of the positioning plate 44 and fastens it to the rotor shaft.

[0081] When the rotor shaft rotates and swings, it pushes the metal ring 1 32 to swing in the same way, and forces the hydraulic oil in the hydraulic rod 34 in the swinging direction into the oil box 33. The hydraulic oil pushes the push rod 36 through the oil pipe 1 35 to swing the corresponding telescopic rod 22. By checking the degree of the swing direction of the telescopic rod 22, it can be confirmed whether the working state of the rotor shaft meets the specified process values.

[0082] When the rotor shaft moves, the hydraulic oil pushes the second magnet 60 upward. The second magnet 60 lifts the metal disk 69 to the limit where the oil pressure rises due to the rotor shaft movement. The metal disk 69 is then attracted by the first magnet 63 and retained there.

[0083] The second sealing plate 68 and the second magnet 60 drive the second metal ring 64 to descend simultaneously. When the second sealing plate 68 ascends, the spring plate 65 pushes the first bevel plate 66 to engage with the second bevel plate 67. The second metal ring 64 does not descend with the second magnet 60 and the second sealing plate 68. The friction generated by the spring plate 65 pushing the first bevel plate 66 and the second bevel plate 67 does not cause the second metal ring 64 to fall, but instead remains in its moved position.

[0084] Since the glass tube 61 is made of transparent material, the values calibrated by the metal ring 64 and the metal disk 69 can be read respectively according to the scale grooves on the glass tube 61.

[0085] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0086] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A new energy vehicle motor rotor shaft runout detection device, comprising a base (1) for placing the motor, characterized in that: Also includes; A resistance component (5) and a conversion component (3) are respectively arranged at two ends of the top of the base (1); A second surveying and mapping component (6) disposed on the conflicting component (5); Two surveying and mapping components (2) symmetrically arranged on the top of the base (1); The surveying and mapping component 1 (2) comprises a bracket (21) slidably mounted on the top of the base (1), a surveying and mapping disc (23) is fixedly mounted on the outer side of the bracket (21), an angle groove is provided on the surveying and mapping disc (23), and two telescopic rods (22) are rotatably mounted on the outer side of the surveying and mapping disc (23); The conversion assembly (3) includes a metal ring (32) and a metal frame (31) slidably mounted on the top of the base (1); an oil box (33) is mounted on each of the four walls inside the metal frame (31); the oil box (33) is filled with hydraulic oil; two hydraulic rods (34) connected to the ball shaft of the metal ring (32) are provided on the oil box (33); the hydraulic rods (34) are connected to the oil box (33) through an oil guide pipe; a push rod (36) is hinged at the end of the telescopic rod (22); an oil pipe (35) is connected to the oil box (33); the push rod (36) moves inside the oil pipe (35); Every two adjacent push rods (36) are respectively hinged to two telescopic rods (22) in a surveying and mapping component (2); A docking assembly (4) is slidably mounted inside a metal ring (32) and is used for docking the end of a rotor shaft.

2. The new energy vehicle motor rotor shaft runout detection device according to claim 1 is characterized in that: The hinged portion of the end of the push rod (36) is sleeved on the telescopic rod (22), and the push rod (36) is sealed and movable at the end of the oil pipe (35). The ends of each two push rods (36) connected to two adjacent oil boxes (33) through the oil pipe (35) are located in the same horizontal plane.

3. The new energy vehicle motor rotor shaft runout detection device according to claim 2, characterized in that: A positioning groove (11) is provided on the top of the base (1); The conversion assembly (3) further comprises a latch (311) inserted into the metal frame (31), and the latch (311) is adapted to the positioning slot (11).

4. The new energy vehicle motor rotor shaft runout detection device according to claim 3 is characterized in that: The docking assembly (4) includes a receiving ring (41) slidably mounted inside a metal ring (32), the receiving ring (41) is internally threadedly connected to a driving ring (42), the end of the driving ring (42) is rotatably mounted with a bearing plate (43), a group of positioning plates (44) are arranged in an equidistant array along the circumference of the bearing plate (43), the positioning plates (44) can slide in the radial direction of the bearing plate (43), and the surfaces of the positioning plates (44) in contact with the receiving ring (41) are inclined to each other.

5. The new energy vehicle motor rotor shaft runout detection device according to claim 4 is characterized in that: Lubricating oil is applied between the receiving ring (41) and the positioning plate (44), and an anti-slip groove is provided on the outside of the driving ring (42).

6. The new energy vehicle motor rotor shaft runout detection device according to claim 5, characterized in that: The abutment assembly (5) comprises a positioning box (51) mounted on the top of the base (1), an oil storage box (55) is sleeved on the positioning box (51), a side ball shaft of the oil storage box (55) is connected to a second bearing plate (56), the second bearing plate (56) is made of silicone material, the positioning box (51) is elastically connected to a pull rod (52) that is movable through the side thereof via a tension spring (54), and a sealing disk (53) is mounted on one end of the pull rod (52) located inside the oil storage box (55); The interior of the positioning box (51) is provided with a second oil pipe (57) which is in communication with the interior of the oil storage box (55). The second oil pipe (57) is provided with a solenoid valve (50). The second oil pipe (57) is in communication with the second surveying and mapping component (6). The interiors of the oil storage box (55) and the second oil pipe (57) are both filled with hydraulic oil.

7. The new energy vehicle motor rotor shaft runout detection device according to claim 6, characterized in that: The oil pipe 2 (57) and the solenoid valve (50) constitute an oil controller. There are two oil controllers in total and they are symmetrically distributed inside the positioning box (51). The oil pipe 2 (57) located at the bottom is thicker than the oil pipe 2 (57) located at the top. The resistance component (5) also includes a sealing plate (59) elastically connected to the lower oil pipe 2 (57) through a spring (58).

8. The new energy vehicle motor rotor shaft runout detection device according to claim 6, characterized in that: The second surveying and mapping component (6) includes a glass tube (61) installed on the side of the positioning box (51) and connected to the second oil pipe (57) above. A group of scale grooves are provided on the outer periphery of the glass tube (61). A protective plate (62) is symmetrically and slidably installed on the side of the positioning box (51). A magnet (63) is provided inside each of the protective plates (62). A sealing disk (68) is slidably installed inside the glass tube (61). A metal disk (69) is placed on the top of the sealing disk (68). A gap is reserved between the outer periphery of the metal disk (69) and the inner wall of the glass tube (61).

9. The new energy vehicle motor rotor shaft runout detection device according to claim 8, characterized in that: The second surveying and mapping component (6) further comprises a second beveled tooth plate (67) fixedly mounted on the side of the positioning box (51); a second metal ring (64) is movably sleeved on the periphery of the glass tube (61); the inner wall of the second metal ring (64) is supported on the periphery of the glass tube (61) by a spring sheet (65); a first beveled tooth plate (66) meshing with the second beveled tooth plate (67) is mounted on the side of the second metal ring (64); and a second magnet (60) is mounted on the bottom of the second sealing disk (68).

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