New energy commercial vehicle drive motor module bearing detection device

Abstract

The present invention specifically relates to a non-disassembly bearing detection device for a new energy commercial vehicle drive motor module, and belongs to the field of bearing detection technology. The non-disassembly bearing detection device for a new energy commercial vehicle drive motor module comprises a base, a fixed component, a detection component and a moving component. The fixed component is arranged on the base, and is used to fix the motor. The detection component comprises a ring body, and the rotating shaft of the motor is inserted into the ring body. Along the circumference of the ring body, a plurality of contact parts are arranged at intervals on the inner circumferential wall of the ring body, and the contact parts abut against the outer circumferential wall of the rotating shaft. Along the radial direction of the ring body, the contact parts are movably connected to the ring body. The moving component is arranged on the base. The rotating shaft of the motor can be inserted into the ring body, and the rotating shaft of the motor can be driven to rotate. The vibration generated when the rotating shaft rotates can move the contact part. By detecting the displacement of the contact part, the vibration condition of the rotating shaft can be judged, and the vibration type of the bearing can be judged, so as to indirectly judge the working condition of the bearing and achieve the purpose of detecting the bearing without disassembly.

Description

Technical Field

[0001] The present invention belongs to the technical field of bearing detection, and in particular relates to a bearing detection device for a drive motor module of a new energy commercial vehicle. Background Art

[0002] The motor is the driving component of new energy vehicles, and the working stability of the motor directly affects the working reliability of new energy vehicles. The motor usually includes a housing and a rotor and a stator contained in the housing. A bearing is arranged on the housing so that the rotor and the housing can be rotatably connected.

[0003] In order to inspect the bearings of the motor, the common operation method is to open the housing so that the bearings can be exposed. Although this method can directly contact the bearings, the disadvantages of this method are that, on the one hand, it may damage the reliability of the housing seal, and on the other hand, the motor structure is complex and many parts need to be disassembled. Therefore, how to inspect the bearings of the motor without opening the housing is a technical problem that needs to be solved urgently. Summary of the invention

[0004] The object of the present invention is to provide a bearing detection device for a new energy commercial vehicle drive motor module, which can detect the bearing of the motor without opening the motor housing.

[0005] In order to achieve the above-mentioned purpose of the invention, the technical solution adopted by the present invention is: the embodiment of the present application provides a new energy commercial vehicle drive motor module bearing detection device, including a base, a fixed component, a detection component and a moving component. The fixed component is arranged on the base, and is used to fix the motor. The detection component includes a ring body, and the rotating shaft of the motor is inserted into the ring body. Along the circumference of the ring body, a plurality of contact parts are arranged at intervals on the inner circumferential wall of the ring body, and the contact parts abut against the outer circumferential wall of the rotating shaft. Along the radial direction of the ring body, the contact parts are movably connected to the ring body. The moving component is arranged on the base, and is used to move the ring body.

[0006] In some embodiments, the ring body is provided with a sliding hole, and the contact portion is inserted into the sliding hole.

[0007] In some embodiments, the base is provided with a vertically extending slide rail, the slide rail is slidably connected to a slide seat, the slide seat is rotatably provided with a turntable, the rotation axis of the turntable is parallel to the horizontal plane, and the fixed component is connected to the turntable.

[0008] In some embodiments, the fixing component includes two mating parts, the two mating parts are mated to form a chamber structure for accommodating the motor, and the mating parts include an inner half shell, an outer half shell and a plurality of abutting parts. The peripheral wall of the inner half shell is provided with a plurality of first through holes, the outer half shell is sleeved outside the peripheral wall of the inner half shell, the outer half shell is provided with a second through hole corresponding to the inner half shell, and the outer half shell is connected to the turntable. The plurality of abutting parts are correspondingly penetrated in the first through hole and the second through hole, the abutting parts and the second through hole are gap-matched, and the plurality of abutting parts cooperate to clamp the motor.

[0009] In some embodiments, the second through hole includes a first side located at the bottom of the abutment portion, the abutment portion includes a second side facing the first side, the first side is provided with a flexible accommodating bag, the flexible accommodating bag accommodates a sphere, and along the axial direction of the second through hole, the second side is provided with a plurality of recess combinations spaced apart, the recess combination including two recessed portions spaced apart.

[0010] In some embodiments, the inner wall surface of the recessed portion is an arc surface.

[0011] In some embodiments, the outer surface of the sphere is coated with an elastic buffer layer.

[0012] In some embodiments, the inner half shell is provided with a accommodating cavity, which is provided with an opening, the opening is facing the second side of the abutment portion, the accommodating cavity and the recessed portion cooperate to form an accommodating space, the inner half shell is also provided with an accommodating channel, the accommodating channel is connected to the accommodating cavity, a chain is provided in the accommodating channel, and the chain is configured such that when the first side is closed toward the second side, the chain enters the accommodating space enclosed by the accommodating cavity and the recessed portion.

[0013] In some embodiments, the accommodating channel is provided with a matching portion, the chain is connected to the matching portion, the outer half shell is provided with an inclined surface gradually away from the inner half shell, and the matching portion abuts against the inclined surface so that when the first side approaches the second side, the matching portion pushes the chain to move.

[0014] In some embodiments, the port of the accommodating channel is arranged on the first wall, and the accommodating cavity includes a second wall facing the port of the accommodating channel, the second wall is curved in an arc shape, one end of the second wall faces the second side, and the other end is connected to the first wall.

[0015] The present invention has the following beneficial effects:

[0016] The shaft of the motor can be inserted into the ring body to drive the motor shaft to rotate. The vibration generated when the shaft rotates can move the contact part. By detecting the displacement of the contact part, the vibration condition of the shaft can be judged, and then the vibration type of the bearing can be judged, so as to indirectly judge the working condition of the bearing and achieve the purpose of detecting the bearing without disassembling it. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a structural schematic diagram of the bearing detection device of the drive motor module of a new energy commercial vehicle of the present invention (the fixed component is not lifted);

[0018] Figure 2 It is a structural schematic diagram of the bearing detection device (fixed component lifting state) of the new energy commercial vehicle drive motor module of the present invention;

[0019] Figure 3 It is a structural schematic diagram of the fixing component of the present invention;

[0020] Figure 4 for Figure 3 A magnified image of point A;

[0021] Figure 5 It is a schematic diagram of the structure of the detection component of the present invention.

[0022] Figure numbers: 1-base, 2-slide rail, 3-detection component, 4-moving component, 5-slide seat, 6-turntable, 7-fixed component, 8-motor, 9-outer half shell, 10-inner half shell, 11-abutment portion, 12-abutment bolt, 13-first through hole, 14-second through hole, 15-recess combination, 16-recess, 17-flexible containing bag, 18-ball, 19-matching portion, 20-chain, 21-accommodating chamber, 22-second wall, 23-first wall, 24-ring body, 25-contact portion, 26-slide hole, 27-rotating shaft. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.

[0024] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] See also Figure 1 , Figure 2 and Figure 5The embodiment of the present application provides a bearing detection device for a new energy commercial vehicle drive motor module, including a base 1, a fixed component 7, a detection component 3 and a moving component 4. The fixed component 7 is arranged on the base 1, and is used to fix the motor 8. The detection component 3 includes a ring body 24, and the rotating shaft 27 of the motor 8 is inserted in the ring body 24. Along the circumference of the ring body 24, a plurality of contact portions 25 are arranged at intervals on the inner circumferential wall of the ring body 24, and the contact portion 25 abuts against the outer circumferential wall of the rotating shaft 27. Along the radial direction of the ring body 24, the contact portion 25 is movably connected to the ring body 24. The moving component 4 is arranged on the base 1, and is used to move the ring body 24.

[0026] During the rotation of the bearing, different types of vibrations will be generated due to its own structural characteristics, installation quality, working conditions and possible faults. For example, when the bearing rotates, it may generate natural vibration, which is relatively stable and is the inherent vibration of the bearing when it works normally. Forced vibration may also be generated, that is, the errors that may exist in the assembly or processing of the bearing, such as shape and position errors, will cause the bearing to have an uneven contact surface when rotating, thereby causing forced vibration. This vibration is usually manifested as a periodic change in the vibration amplitude. Impact vibration may also be generated. When the bearing has surface damage, cracks, peeling and other faults, each rotation to the damaged position will stimulate an impact vibration. This vibration is sudden, impactful and related to the speed, and is an important basis for judging whether the bearing is damaged.

[0027] The bearing sleeve is arranged on the outer peripheral wall of the rotating shaft 27, so the vibration generated by the bearing will be transmitted to the rotating shaft 27. Therefore, by detecting the vibration of the rotating shaft 27 during rotation, the working condition of the bearing can be indirectly judged, thereby achieving the purpose of detecting the bearing without disassembling it.

[0028] The motor 8 is fixed to the base 1 through the fixing component 7, and the ring body 24 is moved through the moving component 4 so that the rotating shaft 27 of the motor 8 can be inserted into the ring body 24, and the rotating shaft 27 of the motor 8 is driven to rotate. The vibration generated when the rotating shaft 27 rotates can move the contact part 25. By detecting the displacement of the contact part 25, the vibration condition of the rotating shaft 27 can be determined, and then the vibration type of the bearing can be determined.

[0029] The moving component 4 can be selected from existing devices. Its structure and working principle are well known to those skilled in the art and will not be described in detail here.

[0030] The component for detecting contact displacement can be selected from existing detection equipment. For example, a sensor can be set on the ring body 24, and the sensor detects the displacement of the contact part 25. The data of the sensor is transmitted to the processor to determine the vibration type.

[0031] See also Figure 5In some embodiments, the ring body 24 is provided with a sliding hole 26 , and the contact portion 25 is inserted into the sliding hole 26 .

[0032] The contact portion 25 is inserted into the sliding hole 26 so that the contact portion 25 can move relative to the ring body 24 . A spring may be provided between the contact portion 25 and the ring body 24 so that the contact portion 25 can maintain contact with the outer peripheral wall of the rotating shaft 27 .

[0033] In some embodiments, the base 1 is provided with a vertically extending slide rail 2, the slide rail 2 is slidably connected to a slide seat 5, the slide seat 5 is rotatably provided with a turntable 6, the rotation axis of the turntable 6 is parallel to the horizontal plane, and the fixing component 7 is connected to the turntable 6.

[0034] Under the action of the slide rail 2, the turntable 6 can move up and down with the slide seat 5, and there is no need to manually lift the motor 8, which facilitates fixing the motor 8 to the base 1. The turntable 6 allows the direction of the motor 8 to be adjusted as needed.

[0035] The driving structure of the turntable 6 can be selected from existing structures.

[0036] See also Figure 3 and Figure 4 In some embodiments, the fixing member 7 includes two mating parts, which are mated to form a chamber structure for accommodating the motor 8. The mating parts include an inner half shell 10, an outer half shell 9, and a plurality of abutting parts 11. The peripheral wall of the inner half shell 10 is provided with a plurality of first through holes 13, the outer half shell 9 is sleeved outside the peripheral wall of the inner half shell 10, the outer half shell 9 is provided with a second through hole 14 corresponding to the inner half shell 10, and the outer half shell 9 is connected to the turntable 6. The plurality of abutting parts 11 are respectively provided in the first through hole 13 and the second through hole 14, and the abutting parts 11 and the second through hole 14 are clearance-matched, and the plurality of abutting parts 11 cooperate to clamp the motor 8.

[0037] The inner half shell 10 and the outer half shell 9 can be semi-cylindrical shell structures. The two inner half shells 10 are connected by bolts so that the two can enclose a chamber structure. Similarly, the two outer half shells 9 can also be connected by bolts.

[0038] The abutting portion 11 is disposed through the first through hole 13 , so that the abutting portion 11 can move relative to the inner half shell 10 , and further the abutting portion 11 can abut against the outer surface of the motor 8 .

[0039] A spring may be provided between the abutting portion 11 and the inner half shell 10 , and the spring enables the abutting portion 11 to be kept in abutment against the outer surface of the motor 8 .

[0040] The outer half shell 9 is sleeved on the outside of the inner half shell 10, and the abutment portion 11 is passed through the second through hole 14, so that when the outer half shell 9 moves relative to the inner half shell 10, the inner wall surface of the second through hole 14 can abut against the abutment portion 11, so that the abutment portion 11 cannot move relative to the first through hole 13, so that the outer half shell 9 can lock the abutment portion 11.

[0041] In the embodiment of the present application, the outer half shell 9 can be threadedly connected with abutment bolts 12. When the second through hole 14 abuts against the abutment portion 11, the abutment bolts 12 can be rotated so that the abutment bolts 12 abut against the inner half shell 10, thereby preventing the risk of the outer half shell 9 moving relative to the inner half shell 10 when the turntable 6 rotates.

[0042] When the inner half shell 10 and the motor 8 are lifted by the outer half shell 9, the abutment portion 11 can be locked by the action of gravity, which increases the fixing efficiency on the one hand and the fixing reliability on the other hand.

[0043] See also Figure 4 In some embodiments, the second through hole 14 includes a first side located at the bottom of the abutment portion 11, the abutment portion 11 includes a second side facing the first side, the first side is provided with a flexible accommodating bag 17, the flexible accommodating bag 17 accommodates a sphere 18, and along the axial direction of the second through hole 14, the second side is provided with a plurality of recess combinations 15 at intervals, and the recess combination 15 includes two recessed portions 16 arranged at intervals.

[0044] by Figure 4 For example, the axis of the second through hole 14 is horizontal, so that a portion of the inner wall of the second through hole 14 is located below the abutting portion 11 .

[0045] The first side is located below the second side, so that when the slide 5 lifts the outer half shell 9, the first side and the second side can be closed, and then the flexible receiving bag 17 can be against the second side.

[0046] On the one hand, the flexible accommodating bag 17 can increase the friction between the inner wall of the second through hole 14 and the abutting portion 11. On the other hand, the recessed combination 15 includes two recessed portions 16, so that when the flexible accommodating bag 17 abuts against the recessed combination 15, the sphere 18 is respectively arranged in the two recessed portions 16, so that the flexible accommodating bag 17 can play an axial limiting role on the abutting portion 11.

[0047] The recess combination 15 enables the flexible receiving bag 17 to enter the two recessed portions 16 at the same time, thereby increasing the fixing reliability of the abutting portion 11 .

[0048] See also Figure 4 In some embodiments, the inner wall surface of the recessed portion 16 is an arc surface.

[0049] The arc surface can disperse the force exerted by the abutting portion 11 on the flexible containing bag 17 , thereby reducing the risk of the abutting portion 11 causing damage to the flexible containing bag 17 .

[0050] See also Figure 4 In some embodiments, the outer surface of the ball 18 is wrapped with an elastic buffer layer.

[0051] On the one hand, the elastic buffer layer can fill the flexible accommodation bag 17, thereby evenly distributing the spheres 18 in the flexible accommodation bag 17. On the other hand, it can play a buffering role, reducing the risk of the flexible accommodation bag 17 being damaged due to excessive impact force between the spheres 18 and the abutment portion 11.

[0052] See also Figure 4 In some embodiments, the inner half shell 10 is provided with a accommodating cavity 21, and the accommodating cavity 21 is provided with an opening, the opening is toward the second side of the abutting portion 11, the accommodating cavity 21 and the recessed portion 16 cooperate to form an accommodating space, and the inner half shell 10 is also provided with an accommodating channel, which is connected to the accommodating cavity 21, and a chain 20 is provided in the accommodating channel. The chain 20 is configured so that when the first side is closed toward the second side, the chain 20 enters the accommodating space surrounded by the accommodating cavity 21 and the recessed portion 16.

[0053] When the chain 20 enters the accommodating space surrounded by the accommodating cavity 21 and the recessed portion 16 , the chain 20 bends and overlaps, with part of the chain 20 being in the accommodating cavity 21 and part of the chain 20 being in the recessed portion 16 , so that the chain 20 can play an axial limiting role on the abutting portion 11 .

[0054] Furthermore, the advantage of limiting by the chain 20 is that when the abutment portion 11 moves in the first through hole 13, the portion of the recessed portion 16 facing the opening of the accommodating cavity 21 will change, thereby causing the shape of the accommodating space surrounded by the recessed portion 16 and the accommodating cavity 21 to change. At this time, the stacking shape of the portion of the chain 20 in the accommodating space can change according to the shape of the accommodating space, so that the chain 20 can still limit the abutment portion 11 even after the abutment portion 11 moves relative to the first through hole 13.

[0055] It should be noted that the positions of the recessed portions 16 need to be reasonably set so that when the abutting portion 11 is at any position, the plurality of recessed portions 16 can be selectively set to face the opening.

[0056] See also Figure 4 In some embodiments, the accommodating channel is provided with a matching portion 19, the chain 20 is connected to the matching portion 19, the outer half shell 9 is provided with an inclined surface gradually away from the inner half shell 10, and the matching portion 19 is against the inclined surface, so that when the first side approaches the second side, the matching portion 19 pushes the chain 20 to move.

[0057] A spring may be provided between the fitting portion 19 and the inner half shell 10 , so that the fitting portion 19 can partially protrude from the outer wall surface of the inner half shell 10 .

[0058] When the first side and the second side are closed, the matching portion 19 is pushed into the accommodating channel under the action of the inclined surface. Under the limitation of the accommodating channel, the portion of the chain 20 in the accommodating channel will not bend and can be pushed into the accommodating space by the matching portion 19.

[0059] See also Figure 4 In some embodiments, the port of the accommodating channel is arranged on the first wall 23, and the accommodating cavity 21 includes a second wall 22 facing the port of the accommodating channel, the second wall 22 is curved in an arc shape, one end of the second wall 22 faces the second side, and the other end is connected to the first wall 23.

[0060] On one hand, the arc surface of the second wall 22 and the recessed portion 16 cooperate to make the chain 20 stacked more smoothly in the accommodating space. On the other hand, the first wall 23 is connected to the second wall 22, which reduces the volume of the accommodating space, thereby reducing the required length of the chain 20. On the other hand, the first wall 23 is connected to the second wall 22, so that when the chain 20 is stacked in the accommodating space, the stacked volume of the part away from the abutting portion 11 is smaller, and the stacked volume of the part close to the abutting portion 11 is larger, which ensures the limiting effect on the abutting portion 11 while reducing the required length of the chain 20.

[0061] It should be noted that when the abutment portion 11 is limited by the chain 20, if there is no flexible containing bag 17, the abutment portion 11 may have a certain amount of movement relative to the first through hole 13. Under the action of the flexible containing bag 17, the abutment portion 11 is difficult to move relative to the first through hole 13. Therefore, through the cooperation of the flexible containing bag 17 and the chain 20, the fixing reliability of the motor 8 can be increased.

[0062] The above embodiments are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations, modifications, and substitutions made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A bearing detection device for a new energy commercial vehicle drive motor module, characterized in that: include: Base (1); A fixing component (7) is arranged on the base (1) and is used to fix the motor (8). The base (1) is provided with a vertically extending slide rail (2). The slide rail (2) is slidably connected to a slide seat (5). The slide seat (5) is rotatably provided with a turntable (6). The rotation axis of the turntable (6) is parallel to a horizontal plane. The fixing component (7) is connected to the turntable (6). The fixing component (7) includes two mating parts. The two mating parts are mated to form a chamber structure for accommodating the motor (8). The mating parts include an inner half shell (10), an outer half shell (9) and a plurality of abutting parts (11). The peripheral wall of the inner half shell (10) is provided with a plurality of first through holes (13). The outer half shell (9) is sleeved outside the peripheral wall of the inner half shell (10). The outer half shell (9) corresponds to the inner half shell (10). ) is provided with a second through hole (14), the outer half shell (9) is connected to the rotating disk (6), a plurality of the abutting portions (11) are arranged in a one-to-one correspondence through the first through hole (13) and the second through hole (14), the abutting portions (11) and the second through hole (14) are clearance-matched, and the plurality of the abutting portions (11) cooperate to clamp the motor (8), the second through hole (14) includes a first side located at the bottom of the abutting portion (11), the abutting portion (11) includes a second side facing the first side, the first side is provided with a flexible accommodation bag (17), the flexible accommodation bag (17) accommodates a sphere (18), and along the axial direction of the second through hole (14), the second side is provided with a plurality of recessed assemblies (15) at intervals, the recessed assembly (15) includes two recessed portions (16) arranged at intervals; A detection component (3) comprises a ring body (24), a rotating shaft (27) of a motor (8) being inserted into the ring body (24), a plurality of contact portions (25) being arranged at intervals on an inner peripheral wall of the ring body (24) along a circumferential direction of the ring body (24), the contact portions (25) being in contact with an outer peripheral wall of the rotating shaft (27), and the contact portions (25) being movably connected to the ring body (24) along a radial direction of the ring body (24); A moving component (4) is arranged on the base (1) and is used to move the ring body (24).

2. The new energy commercial vehicle drive motor module bearing detection device according to claim 1 is characterized in that: The ring body (24) is provided with a sliding hole (26), and the contact portion (25) is inserted into the sliding hole (26).

3. The new energy commercial vehicle drive motor module bearing detection device according to claim 1 is characterized in that: The inner wall surface of the recessed portion (16) is an arc surface.

4. The new energy commercial vehicle drive motor module bearing detection device according to claim 1, characterized in that: The outer surface of the sphere (18) is wrapped with an elastic buffer layer.

5. The new energy commercial vehicle drive motor module bearing detection device according to claim 1, characterized in that: The inner half shell (10) is provided with a receiving cavity (21), the receiving cavity (21) is provided with an opening, the opening is directed toward the second side of the abutting portion (11), the receiving cavity (21) cooperates with the recessed portion (16) to form a receiving space, the inner half shell (10) is further provided with a receiving channel, the receiving channel is communicated with the receiving cavity (21), a chain (20) is provided in the receiving channel, and the chain (20) is configured such that when the first side is closed toward the second side, the chain (20) enters the receiving space enclosed by the receiving cavity (21) and the recessed portion (16).

6. The new energy commercial vehicle drive motor module bearing detection device according to claim 5 is characterized in that: The accommodating channel is provided with a matching portion (19), the chain (20) is connected to the matching portion (19), the outer half shell (9) is provided with an inclined surface gradually moving away from the inner half shell (10), and the matching portion (19) abuts against the inclined surface, so that when the first side approaches the second side, the matching portion (19) pushes the chain (20) to move.

7. The new energy commercial vehicle drive motor module bearing detection device according to claim 5 is characterized in that: The port of the accommodating channel is arranged on the first wall (23), and the accommodating cavity (21) comprises a second wall (22) facing the port of the accommodating channel, the second wall (22) is curved in an arc shape, one end of the second wall (22) faces the second side, and the other end is connected to the first wall (23).

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