Disassembling and assembling clamp for automobile permanent magnet synchronous motor teaching

Abstract

The utility model discloses a dismounting clamp for automobile permanent magnet synchronous motor teaching, which comprises a supporting seat which is of a circular ring structure and is coaxial with a rotor of a permanent magnet synchronous motor, and a plurality of front supporting rods are distributed around the end face of one end of the supporting seat. The end, away from the supporting base, of the front supporting rod can abut against the front end face of the shell of the permanent magnet synchronous motor. One end of each rear supporting rod is connected with the corresponding front supporting rod, and the other end of each rear supporting rod extends towards the rear end of the permanent magnet synchronous motor and can abut against the rear end face of the shell of the permanent magnet synchronous motor; a hand wheel coaxial with the supporting seat is rotatably mounted on the supporting seat, a coaxial screw rod is mounted on the hand wheel in a screw-thread fit manner, a clamping jaw is arranged on the screw rod, and the clamping jaw is rotatably mounted at the end part of the screw rod and can be clamped with a rotating shaft of a rotor of the permanent magnet synchronous motor. The teaching demonstration device is convenient to disassemble and assemble, safe to use and good in teaching demonstration effect.

Description

Technical Field

[0001] The utility model relates to the technical field of motor teaching tools, in particular to a disassembly and assembly fixture for teaching automobile permanent magnet synchronous motors. Background Art

[0002] In the teaching process of automobile and other majors, it is often necessary to deepen students' understanding of equipment or mechanical structures through physical demonstrations. In the process of physical demonstration teaching, it is necessary to dissect the equipment or mechanical structure to help students further understand the internal structure of the equipment or mechanical structure to improve teaching effectiveness.

[0003] However, for the physical demonstration teaching of permanent magnet synchronous motor, since its rotor is a permanent magnet, and the stator also has strong magnetism due to magnetization or energization in long-term teaching, when showing the internal combination structure of the rotor and stator, it is necessary to frequently pull out the rotor for students to watch. However, in the process of pulling out the rotor, due to the influence of the magnetic field, there is suction between the first half of the rotor and the stator, and repulsion between the second half, and the suction and repulsion are both large, making it difficult to disassemble and assemble. At the same time, due to the reversal of force, it is easy to cause danger, and the safety of use is difficult to ensure. If the traditional hydraulic extraction method is adopted, on the one hand, the cost is high, the hydraulic equipment is large in size, which is not conducive to teaching demonstration and observation, and on the other hand, it is difficult for students to intuitively feel the magnetic attraction effect between the stator and rotor of the motor, so it is difficult to have a clear understanding of the rotation principle of the permanent magnet synchronous motor. Summary of the invention

[0004] In view of the deficiencies of the above-mentioned prior art, the technical problem to be solved by the utility model is: to provide a disassembly and assembly fixture for teaching automobile permanent magnet synchronous motors, which solves the problem that the permanent magnet synchronous motor rotor is difficult to pull out and install and has low safety in use in the existing motor teaching.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A disassembly and assembly fixture for teaching automobile permanent magnet synchronous motors, comprising a support seat in a circular ring structure and coaxial with a rotor of the permanent magnet synchronous motor, a plurality of front support rods distributed around one end surface of the support seat, and an end of the front support rod away from the support seat can abut against the front end surface of a housing of the permanent magnet synchronous motor; and a plurality of rear support rods, one end of the rear support rod is connected to the front support rod, and the other end extends toward the rear end of the permanent magnet synchronous motor and can abut against the rear end surface of the housing of the permanent magnet synchronous motor;

[0007] A hand wheel coaxial with the support seat is rotatably mounted on the support seat, a coaxial screw rod is threadedly mounted on the hand wheel, a claw is provided on the screw rod, the claw is rotatably mounted on the end of the screw rod and can be engaged with the rotating shaft of the permanent magnet synchronous motor rotor.

[0008] As an optimization, a U-shaped sliding groove is provided on the inner wall of the support seat and surrounds it. Correspondingly, an annular sliding block is provided on the outer wall of the handwheel and surrounds it. The sliding block is slidably fitted in the sliding groove.

[0009] As an optimization, the cross-sectional shape of the handwheel is T-shaped as a whole, one side of its horizontal section is in contact with the end surface of the support seat facing away from the front support rod, and the slider is arranged on the side wall of its vertical section.

[0010] As an optimization, a plurality of handles extending in the radial direction of the hand wheel are distributed around the side wall of the horizontal section of the hand wheel.

[0011] As an optimization, an adjusting bolt is threadedly installed at the end of the front support rod away from the support seat, and a supporting nut is provided at the end of the adjusting bolt away from the front support rod. By rotating the supporting nut, the supporting nut can be moved closer to or away from the front support rod.

[0012] As an optimization, the front support rod is hinged to the rear support rod.

[0013] As an optimization, the front support rods and the rear support rods are three corresponding ones.

[0014] As an optimization, multiple rollers are distributed on the inner side of the front support rod along its length direction, and the wheel surface of the corresponding roller on each front support rod is on the same circumference with the same diameter as the permanent magnet synchronous motor rotor, and the rotating axis of the roller is perpendicular to the radial direction of the circumference.

[0015] Compared with the prior art, this application has the following beneficial effects:

[0016] The utility model sets a front support rod and a rear support rod, and respectively presses against the front end face and the rear end face of the permanent magnet synchronous motor, and drives the screw rod to pull out the rotor by rotating the hand wheel. In the first half of pulling out the rotor, the front support rod is mainly used to provide support force, and in the transition to the second half, the rear support rod is used to provide pulling force, so as to prevent the rotor from being suddenly ejected when the magnetic force suddenly changes, thereby providing better disassembly and assembly stability, and improving the convenience of disassembly and assembly and the safety of use. At the same time, through the hand wheel, students can intuitively feel the magnetic influence effect between the rotor and the stator of the permanent magnet, which is conducive to students' understanding of the driving principle of the permanent magnet synchronous motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] In the figure, 1 is a support seat, 2 is a front support rod, 3 is a housing, 4 is a rear support rod, 5 is a handwheel, 6 is a screw rod, 7 is a claw, 8 is a slider, 9 is a handle, 10 is an adjusting bolt, 11 is a support nut, 12 is a roller, and 13 is a rotor. DETAILED DESCRIPTION

[0019] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0020] For specific implementation: see Figure 1 ,

[0021] A disassembly and assembly fixture for teaching automobile permanent magnet synchronous motors, comprising a support seat 1 in a circular ring structure and coaxial with a rotor 13 of the permanent magnet synchronous motor, a plurality of front support rods 2 are distributed around one end face of the support seat 1, in this embodiment, there are three front support rods 2, and they are distributed in a three-point manner to improve the stability of the support. The end of the front support rod 2 facing away from the support seat 1 can be against the front end face of the permanent magnet synchronous motor housing 3; and a plurality of rear support rods 4 are also included, one end of the rear support rod 4 is hinged to the front support rod 2, and the other end extends to the rear end of the permanent magnet synchronous motor and can be against the rear end face of the permanent magnet synchronous motor housing 3.

[0022] A handwheel 5 coaxial with the support seat 1 is rotatably mounted, a coaxial screw rod 6 is threadedly mounted on the handwheel 5, and a claw 7 is provided on the screw rod 6. The claw 7 is rotatably mounted on the end of the screw rod 6 and can be engaged with the rotating shaft of the permanent magnet synchronous motor rotor 13. Specifically, a U-shaped slide groove is provided on the inner side wall of the support seat 1 around it, and correspondingly, an annular slider 8 is provided on the outer side wall of the handwheel 5 around it, and the slider 8 is slidably fitted in the slide groove. In this way, the handwheel 5 can maintain stability during the magnetic force reversal process through the U-shaped slide groove. The cross-sectional shape of the handwheel 5 is T-shaped as a whole, and one side of its horizontal section is in contact with the end face of the support seat 1 away from the front support rod 2, and the slider 8 is arranged on the side wall of its vertical section. A plurality of handles 9 extending radially are distributed around the side wall of the horizontal section of the handwheel 5.

[0023] An adjusting bolt 10 is threadedly mounted on one end of the front support rod 2 away from the support seat 1, and a supporting nut 11 is provided on the end of the adjusting bolt 10 away from the front support rod 2. By rotating the supporting nut 11, the supporting nut 11 can be moved closer to or away from the front support rod 2. In this way, by adjusting the supporting nut 11, the front support rod 2 and the rear support rod 4 can be tightly pressed against the front end face and the rear end face of the permanent magnet synchronous motor to improve the overall supporting stability.

[0024] A plurality of rollers 12 are distributed along the length direction of the inner side of the front support rod 2, and the wheel surface of the corresponding roller 12 on each front support rod 2 is on the same circumference with the same diameter as the permanent magnet synchronous motor rotor 13, and the rotation axis of the roller 12 is perpendicular to the radial direction of the circumference. In this way, in the process of pulling out the rotor 13, each roller 12 can effectively support the rotor 13 and locate the position of the rotor 13, so as to facilitate the repeated pulling out and installation of the rotor 13, so as to better demonstrate to students.

[0025] When in use, first place the end of the rear support rod 4 against the rear end face of the permanent magnet synchronous motor housing 3, then place the end of the front support rod 2 against the front end face of the permanent magnet synchronous motor housing 3, and rotate the support nut 11 to make the front support rod 2 and the rear support rod 4 press against the housing 3, and then clamp the claw 7 to the bearing on the rotor 13 shaft or other positions that can be clamped and fixed, which is specifically determined according to the structural form of the rotor 13 shaft (the specific structure of the claw 7 has many in the prior art, such as a half-type, or a variety of forms that can be sleeved on a bearing from one side, which will not be described in detail in this embodiment). After the connection is fixed, turn the hand wheel 5. Since the two sides of the hand wheel 5 are supported by the two side walls of the U-shaped groove, during the process of pulling out the rotor 13 through the screw 6, it can provide good support for the sudden change of magnetic force to maintain stability. In the process of pulling out the rotor 13, the front support rod 2 provides support in the first half, and the rear support rod 4 provides pulling force in the second half due to the reversal of magnetic force to prevent the rotor 13 from being pushed out until the rotor 13 is completely separated from the stator and the rotor 13 is pulled out. At the same time, in the process of pulling out the rotor 13, the roller 12 on the front support rod 2 can support and position the rotor 13, while reducing the friction during the pulling out of the rotor 13, further improving the convenience of pulling out and installing. The installation of the rotor 13 is performed in reverse according to the above operation, which will not be repeated.

[0026] The utility model sets a front support rod and a rear support rod, and respectively presses against the front end face and the rear end face of the permanent magnet synchronous motor, and drives the screw rod to pull out the rotor by rotating the hand wheel. In the first half of pulling out the rotor, the front support rod is mainly used to provide support force, and in the transition to the second half, the rear support rod is used to provide pulling force, so as to prevent the rotor from being suddenly ejected when the magnetic force suddenly changes, thereby providing better disassembly and assembly stability, and improving the convenience of disassembly and assembly and the safety of use. At the same time, through the hand wheel, students can intuitively feel the magnetic influence effect between the rotor and the stator of the permanent magnet, which is conducive to students' understanding of the driving principle of the permanent magnet synchronous motor.

[0027] Although the embodiments of the present invention have been shown and described, it is apparent to those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and foundations of the present invention. The scope of the present invention is defined by the appended claims and their equivalents. Therefore, the embodiments of the present invention are merely illustrative examples of the present invention. The embodiments of the present invention do not constitute limitations on the present invention from any point of view.

Claims

1. A disassembly and assembly fixture for teaching automobile permanent magnet synchronous motors, characterized in that: It includes a support seat in a circular ring structure and coaxial with the rotor of the permanent magnet synchronous motor, a plurality of front support rods are distributed around one end surface of the support seat, and one end of the front support rod away from the support seat can be against the front end surface of the permanent magnet synchronous motor housing; it also includes a plurality of rear support rods, one end of the rear support rod is connected to the front support rod, and the other end extends to the rear end of the permanent magnet synchronous motor and can be against the rear end surface of the permanent magnet synchronous motor housing; A hand wheel coaxial with the support seat is rotatably mounted on the support seat, a coaxial screw rod is threadedly mounted on the hand wheel, a claw is provided on the screw rod, the claw is rotatably mounted on the end of the screw rod and can be engaged with the rotating shaft of the permanent magnet synchronous motor rotor.

2. The disassembly and assembly fixture for teaching automobile permanent magnet synchronous motor according to claim 1, characterized in that: A U-shaped sliding groove is arranged on the inner wall of the support seat, and correspondingly, an annular sliding block is arranged on the outer wall of the hand wheel, and the sliding block is slidably fitted in the sliding groove.

3. The disassembly and assembly fixture for teaching automobile permanent magnet synchronous motor according to claim 2, characterized in that: The cross-section of the hand wheel is T-shaped as a whole, one side of the horizontal section is in contact with the end surface of the support seat away from the front support rod, and the sliding block is arranged on the side wall of the vertical section.

4. The disassembly and assembly fixture for teaching automobile permanent magnet synchronous motor according to claim 3, characterized in that: A plurality of handles extending in the radial direction are distributed around the side wall of the horizontal section of the hand wheel.

5. The disassembly and assembly fixture for teaching automobile permanent magnet synchronous motor according to claim 1, characterized in that: An adjusting bolt is threadedly mounted on one end of the front support rod away from the support seat, and a supporting nut is arranged on the end of the adjusting bolt away from the front support rod. The supporting nut can be moved closer to or away from the front support rod by rotating the supporting nut.

6. The disassembly and assembly fixture for teaching automobile permanent magnet synchronous motor according to claim 1, characterized in that: The front support rod is hinged to the rear support rod.

7. The assembly and disassembly fixture for teaching automobile permanent magnet synchronous motor according to claim 1, characterized in that: There are three corresponding front support rods and three corresponding rear support rods.

8. The assembly and disassembly fixture for teaching automobile permanent magnet synchronous motor according to claim 1, characterized in that: A plurality of rollers are distributed on the inner side of the front support rod along its length direction, the wheel surface of the corresponding roller on each front support rod is on the same circumference with the same diameter as the permanent magnet synchronous motor rotor, and the rotating axis of the roller is perpendicular to the radial direction of the circumference.

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