Motor back electromotive force energy test tool

Abstract

The utility model relates to a tool for testing counter electromotive force of a motor, and relates to the technical field of motor testing. The working platform deck is arranged on the base and can slide along the base, a positioning tool is arranged on the working platform deck, and the positioning tool comprises a set of supporting and fixing blocks and a guide base; two ends of the supporting stand column are slidably connected with the working platform deck; first linear sliding rails are arranged on the inner sides of the supporting stand columns, and lifting driving mechanisms are arranged on the outer sides of the supporting stand columns. One end of the cross beam is connected with a lifting driving mechanism arranged on the outer side of the supporting stand column; the rotation driving mechanism is arranged on the cross beam and is used for driving the to-be-tested DD motor to rotate. The DD motor counter electromotive force testing device not only can adapt to counter electromotive force tests of DD motors of various conventional sizes, but also can automatically correct concentricity errors of the DD motor and the flange plate in real time if the DD motor is not concentric with the flange plate after being placed on the working platform deck, thereby saving complexity of concentricity adjustment of the DD motor and the flange plate, and improving testing efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of motor processing, in particular to a motor back electromotive force energy testing tool. Background Art

[0002] Back EMF (back electromotive force) is a voltage that opposes the change in current that causes it. In an electric motor, the change in magnetic field or current is caused by the relative motion of its coils with respect to the alternating magnetic poles. This can be achieved by moving the coils past static magnets (linear motors) or moving magnets past static coils (torque motors). The units of the back EMF constant are usually volts per meter per second (V / m / s) or volts per angular velocity (V / kRPM). Back EMF can also be seen in generators, because motors and generators are very similar, the former converts electrical energy into mechanical energy, while the latter does the opposite, and when the motor moves at a specific speed, it produces a voltage proportional to that speed. In practical applications, it is necessary to test the voltage value that a DD motor can produce at a specific speed. However, there is no universal tooling specifically for motor back EMF energy testing for existing DD torque motors. They are all tested based on special tooling designed for DD torque motors, which is not universal. Utility Model Content

[0003] To this end, the technical problem to be solved by the utility model is to overcome the deficiencies in the prior art and provide a motor back-electromotive force energy testing tool that can adapt to the back-electromotive force testing of DD motors of various conventional sizes, and after the DD motor is placed on the work platform, if there is a situation such as non-concentricity with the flange, the concentricity error between the DD and the flange will be automatically corrected in real time, saving the tediousness of adjusting the concentricity of the DD motor and the flange and improving work efficiency.

[0004] The utility model provides a motor back electromotive force energy testing tool, comprising:

[0005] Base;

[0006] A work platform is arranged on the base and can slide along the base, and a positioning tool is provided on the work platform, and the positioning tool includes a group of supporting and fixing blocks for fixing the DD motor and a guide seat for guiding the position adjustment of the supporting and fixing blocks;

[0007] A support column, both ends of which are slidably connected to the work platform; a first linear slide rail is provided on the inner side of the support column, and a lifting drive mechanism is provided on the outer side of the support column;

[0008] A crossbeam, both ends of which are connected to the first linear slide rail and can move up and down along the first linear slide rail, and one end of the crossbeam is connected to a lifting drive mechanism disposed outside the support column;

[0009] A rotary drive mechanism is arranged on the crossbeam and is used to drive the DD motor to be tested to rotate; the rotary drive mechanism includes a servo motor, a reducer and a flange, the output end of the servo motor is connected to the reducer, an adapter flange is arranged on the flange, a flange shaft is connected to the adapter flange, the output shaft of the reducer is connected to the flange shaft through a coupling, a bearing is sleeved on the outer side of the flange shaft, a bearing seat is arranged on the outer side of the bearing, and the bearing seat is connected to the crossbeam.

[0010] In one embodiment of the utility model, the lifting drive mechanism includes a handwheel, a screw rod and a transmission nut. The screw rod is installed on the side of the support column through a fixed seat. The top end of the screw rod is connected to the handwheel, and the transmission nut is threadedly connected to the screw rod.

[0011] In an embodiment of the utility model, a cross-shaped guide slot is provided on the guide seat, and a plurality of mounting holes arranged at equal intervals for mounting the supporting fixing block are provided in the guide slot.

[0012] In an embodiment of the present invention, the guide seat includes four guide ribs symmetrically arranged in pairs, and the gap between two guide ribs forms a guide slot.

[0013] In an embodiment of the present invention, each of the guide ribs is V-shaped.

[0014] In an embodiment of the present invention, the supporting and fixing blocks include four, which are dispersedly embedded in the guiding slide grooves.

[0015] In one embodiment of the present invention, the supporting and fixing block is provided with a mounting and fixing hole for fixing the DD motor and a locking member for fixing the position of the supporting and fixing block.

[0016] In one embodiment of the utility model, second linear slide rails are provided on both sides of the base, a first slider is provided at the bottom end of the support column, and the first slider is connected to the second linear slide rail; anti-slip limit blocks are provided on both sides of the second linear slide rail on the base.

[0017] In one embodiment of the utility model, third linear slide rails are provided on both sides of the base, a second slider is provided at the bottom of the work platform, and the second slider is connected to the third linear slide rails.

[0018] In one embodiment of the utility model, an X-axis locking block and a Y-axis locking block are provided on the base, the X-axis locking block is used to lock the position of the working platform, and the Y-axis locking block is used to lock the position of the supporting column.

[0019] The above technical solution of the utility model has the following beneficial effects compared with the prior art:

[0020] The motor back-electromotive force energy testing tool described in the utility model can adapt to the back-electromotive force testing of DD motors of various conventional sizes, and after the DD motor is placed on the work platform, if there is a situation such as non-concentricity with the flange, the concentricity error between the DD and the flange will be automatically corrected in real time, saving the tediousness of adjusting the concentricity of the DD motor and the flange and improving the testing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments of the utility model in combination with the accompanying drawings.

[0022] Figure 1 It is a structural schematic diagram of a universal magnet attachment strength test tool for torque motors in a preferred embodiment of the utility model;

[0023] Figure 2 It is a structural schematic diagram of the working platform and positioning tooling of the utility model;

[0024] Figure 3 It is a structural schematic diagram of the rotary drive mechanism of the utility model;

[0025] Explanation of the markings in the specification: 1. Base; 11. Second linear slide rail; 12. Anti-slip limit block; 14. X-axis locking block; 15. Y-axis locking block; 2. Work platform; 3. Positioning tooling; 31. Support fixing block; 32. Guide seat; 321. Guide slide groove; 322. Guide rib; 4. Support column; 5. Lifting drive mechanism; 51. Handwheel; 52. Screw rod; 53. Drive nut; 6. Rotary drive mechanism; 61. Servo motor; 62. Reducer; 63. Flange; 64. Adapter flange; 65. Flange shaft; 66. Coupling; 67. Bearing seat; 7. Crossbeam. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0027] Reference Figure 1As shown, a motor back electromotive force energy testing tool described in the utility model comprises: a base 1; a working platform 2, which is arranged on the base 1 and can slide along the base 1, and a positioning tool 3 is provided on the working platform 2, and the positioning tool 3 comprises a group of supporting and fixing blocks 31 for fixing the DD motor and a guide seat 32 for guiding the position adjustment of the supporting and fixing blocks 31; a supporting column 4, both ends of which are slidably connected to the working platform 2; a first linear slide rail is provided on the inner side of the supporting column 4, and a lifting drive mechanism 5 is provided on the outer side of the supporting column 4; The lifting drive mechanism 5 includes a handwheel 51, a screw rod 52 and a transmission nut 53. The screw rod 52 is installed on the side of the support column 4 through a fixed seat, the top of the screw rod 52 is connected to the handwheel 51, and the transmission nut 53 is threadedly connected to the screw rod 52; a crossbeam 7, both ends of which are connected to the first linear slide rail 41 and can move up and down along the first linear slide rail 41, one end of the crossbeam 7 is connected to the lifting drive mechanism 5 arranged on the outside of the support column 4; a rotation drive mechanism 6 is arranged on the crossbeam 7, and is used to drive the DD motor to be tested to rotate.

[0028] like Figure 2 As shown, the rotary drive mechanism 6 includes a servo motor 61, a reducer 62 and a flange 63. The output end of the servo motor 61 is connected to the reducer 62. A transfer flange 64 is provided on the flange 63. A flange shaft 65 is connected to the transfer flange 64. The output shaft of the reducer 62 is connected to the flange shaft 65 through a coupling 66. A bearing is sleeved on the outer side of the flange shaft 65. A bearing seat 67 is provided on the outer side of the bearing. The bearing seat 67 is connected to the crossbeam 7.

[0029] like Figure 3 As shown, the guide seat 32 is provided with a cross-shaped guide slot 321, and the guide slot 321 is provided with a plurality of equally spaced mounting holes for mounting the support fixing block 31. In this embodiment, the guide seat 32 includes four guide ribs 322 symmetrically arranged in pairs, and the gap between two guide ribs 322 forms a guide slot 321, and each guide rib 322 is V-shaped.

[0030] Preferably, the supporting and fixing blocks 31 include four, which are dispersedly embedded in the guiding sliding grooves 321 .

[0031] Furthermore, the supporting and fixing block 31 is provided with a mounting and fixing hole for fixing the DD motor and a locking member for fixing the position of the supporting and fixing block 31 .

[0032] Preferably, the base 1 is provided with a second linear slide rail 11 on both sides, the bottom end of the support column 4 is provided with a first slider, the first slider is connected to the second linear slide rail 11, and the base 1 is provided with anti-slip limit blocks 12 on both sides of the second linear slide rail 11. The base 1 is provided with a third linear slide rail 13 on both sides, the bottom of the work platform 2 is provided with a second slider, the second slider is connected to the third linear slide rail 13, and the base 1 is provided with an X-axis locking block 14 and a Y-axis locking block 15, the X-axis locking block 14 is used to lock the position of the work platform 2, and the Y-axis locking block 15 is used to lock the position of the support column 4.

[0033] During specific use, the DD motor can be placed arbitrarily on the working platform 2 without considering the concentricity with the flange 63; first, push the support fixing block 31 to the outside of the guide seat 32, and then place the DD motor on the guide rib 322 above the working platform 2, push the support fixing block 31 to the bottom of the DD motor to find a suitable installation hole type, and lock the DD motor and the support fixing block 31 with screws, and then lock the support fixing block 31 with the working platform 2. After completing the above-mentioned DD motor fixing work, shake the handwheel 51 of the lifting drive mechanism 5 to make the flange 63 drop to the upper surface of the DD motor. The notch of the flange 63 is connected to the DD motor turntable, and then the flange 63 is rotated by hand to confirm whether the rotation is smooth. During the rotation process, if there is eccentricity in the installation, the supporting column 4 moves in the Y-axis direction on the second linear slide rail 11, and the working platform 2 slides horizontally in the X-axis direction. The four sets of guide rails will automatically compensate for the position of the DD motor in real time and correct the concentricity error between the DD motor and the flange 63. When they are roughly concentric, the DD motor and the flange 63 can be locked, and then the DD motor can be connected to the oscilloscope, and the test process is started to obtain the back electromotive force energy parameters of the DD motor.

[0034] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention of the utility model.

Claims

1. A motor back electromotive force energy testing tool, characterized in that: include: Base; A work platform is arranged on the base and can slide along the base, and a positioning tool is provided on the work platform, and the positioning tool includes a group of supporting and fixing blocks for fixing the DD motor and a guide seat for guiding the position adjustment of the supporting and fixing blocks; A support column, both ends of which are slidably connected to the work platform; a first linear slide rail is provided on the inner side of the support column, and a lifting drive mechanism is provided on the outer side of the support column; A crossbeam, both ends of which are connected to the first linear slide rail and can move up and down along the first linear slide rail, and one end of the crossbeam is connected to a lifting drive mechanism disposed outside the support column; A rotary drive mechanism is arranged on the crossbeam and is used to drive the DD motor to be tested to rotate; the rotary drive mechanism includes a servo motor, a reducer and a flange, the output end of the servo motor is connected to the reducer, an adapter flange is arranged on the flange, a flange shaft is connected to the adapter flange, the output shaft of the reducer is connected to the flange shaft through a coupling, a bearing is sleeved on the outer side of the flange shaft, a bearing seat is arranged on the outer side of the bearing, and the bearing seat is connected to the crossbeam.

2. The motor back electromotive force energy testing tool according to claim 1, characterized in that: The lifting drive mechanism comprises a hand wheel, a screw rod and a transmission nut. The screw rod is installed on the side of the supporting column through a fixing seat. The top end of the screw rod is connected to the hand wheel, and the transmission nut is threadedly connected to the screw rod.

3. The motor back electromotive force energy testing tool according to claim 1, characterized in that: The guide seat is provided with a cross-shaped guide slot, and the guide slot is provided with a plurality of mounting holes which are arranged at equal intervals and are used for mounting the supporting fixing block.

4. The motor back electromotive force energy testing tool according to claim 3, characterized in that: The guide seat comprises four guide ribs which are symmetrically arranged in pairs, and the gap between two guide ribs forms a guide slot.

5. The motor back electromotive force energy testing tool according to claim 4, characterized in that: Each of the guide ribs is in a V shape.

6. The motor back electromotive force energy testing tool according to claim 5, characterized in that: The supporting and fixing blocks include four blocks which are dispersedly embedded in the guiding slide grooves.

7. The motor back electromotive force energy testing tool according to claim 6, characterized in that: The supporting and fixing block is provided with a mounting and fixing hole for fixing the DD motor and a locking piece for fixing the position of the supporting and fixing block.

8. The motor back electromotive force energy testing tool according to claim 1, characterized in that: A second linear slide rail is disposed on both sides of the base, a first slider is disposed at the bottom end of the support column, the first slider is connected to the second linear slide rail, and anti-slip limit blocks are disposed on both sides of the second linear slide rail on the base.

9. The motor back electromotive force energy testing tool according to claim 8, characterized in that: A third linear slide rail is disposed on both sides of the base, a second slider is disposed at the bottom of the work platform, and the second slider is connected to the third linear slide rail.

10. The motor back electromotive force energy testing tool according to claim 9, characterized in that: An X-axis locking block and a Y-axis locking block are provided on the base, wherein the X-axis locking block is used for locking the position of the working platform, and the Y-axis locking block is used for locking the position of the supporting column.

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