A kind of cogging torque test deviceTechnical field
The utility model relates to electromechanical testing field, in particular to a kind of cogging torque test device.
Background technique
The cogging torque permanent magnet that is magneto winding when the power supply line of no motor simultaneously of being powered keeps open circuit and fixedInteract the torque of generation between sub- iron core, is caused by the tangential component of interaction force between permanent magnet and armature tooth's.
Cogging torque can make motor generate vibration and noise, the fluctuation of speed occur, prevent motor from even running, influence electricityThe performance of machine.In variable speed drives, when torque pulsation frequency is consistent with the mechanical resonance frequency of stator or rotor, it can generate altogetherVibration phenomenon, so that vibration and noise will be amplified.The presence of cogging torque equally affects motor in speed control systemHigh accuracy positioning in low-speed performance and position control system.It is thus quicker on these influences of cogging torque generation at someCogging torque will be considered how to test in the application of sense to which whether test design meets the requirements, or going out for productFactory examines, to guarantee not will cause practical application undesirable influence.
Utility model content
For the above defect of the existing technology, the main purpose of the utility model is to overcome the deficiencies in the prior artPlace discloses a kind of cogging torque test device, including workbench, motor mounting rack, test line wheel, tensiometer and testLine, the motor mounting rack setting on the workbench, are mounted on the motor mounting rack, the survey to measured motorExamination line wheel is mounted on the output shaft to measured motor, and the p-wire is in the test line wheel, and one end and the drawingThe connection of power meter.
Further, further include regulating device, drive the motor mounting rack vertical shift using the regulating device.
Further, the regulating device includes guide part, elevating mechanism and actuator, and the motor mounting rack is verticalSetting on the guide part and elevating mechanism, drive the elevating mechanism to make the motor installation branch using the actuatorFrame vertical shift.
Further, it is horizontally disposed with guide rail on the workbench, the tensiometer is slidably disposed in the guide railOn.
Further, the elevating mechanism is screw rod, and the actuator is motor.
It further, further include infrared transmitter and infrared remote receiver, the infrared transmitter and infrared remote receiver are arrangedOn the same line, and it is parallel with the guide rail.
The utility model obtain the utility model has the advantages that
The utility model structure is simple, and easy to operate manufacturing cost is low, and is general part, convenient later maintenance.It utilizesRegulating device driving motor mounting bracket enables the device to the motor for measuring each size, applied widely.In addition, passing throughThe cooperation of infrared transmitter and infrared remote receiver makes to test tangent line when line wheel pulls with tensiometer glide direction in same straight lineOn, greatly improve measuring accuracy.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of cogging torque test device of the utility model；
Fig. 2 is the structural schematic diagram of regulating device；
Appended drawing reference is as follows:
1, workbench, 2, motor mounting rack, 3, test line wheel, 4, tensiometer, 5, p-wire, 6, regulating device, 7, leadRail, 9, to measured motor, 11, through-hole, 61, guide part, 62, elevating mechanism, 63, actuator, 81, infrared transmitter, 82, infrared connectReceive device.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, with reference to the accompanying drawing and implementExample is described in further detail the utility model.It should be appreciated that specific embodiment described herein is only to explain this realityWith novel, it is not used to limit the utility model.
A kind of cogging torque test device of the utility model, as shown in Figs. 1-2, including workbench 1, motor mounting rack2, line wheel 3, tensiometer 4 and p-wire 5 are tested, motor mounting rack 2 is arranged on workbench 1, is mounted on motor to measured motor 9In mounting bracket 2, test line wheel 3 is mounted on the output shaft to measured motor 9, and p-wire 5 is in test line wheel 3, and oneEnd is connect with tensiometer 5.When measuring cogging torque, tensiometer 4 is slowly pulled, is recorded required when test line wheel 3 rotatesPower, measured by tensiometer 5.Then the torque of tooth socket is can be obtained into multiplied by the radius of test line wheel 3 in the pulling force measured.
In order to adapt to more motors, in one embodiment, is opened up on the desktop of workbench 1 and allow motor mounting rack2 through-holes 11 passed through adjust the height of the prominent through-hole 11 of motor mounting rack 2 by regulating device 6, to meet various sizes electricityIn addition the installation of machine cooperates matching test line wheel 3 to measure.Specifically, regulating device 6 includes two guide parts61, elevating mechanism 62 and actuator 63, motor mounting rack 2 are arranged on guide part 61 and elevating mechanism 62, and guide part 61 canTo be column, 2 vertical shift of motor mounting rack is used to support and guided；Elevating mechanism 62 can be screw rod, two screw rods withColumn is arranged in parallel, and distribution triangular in shape；Actuator 63 can be motor, and driving screw rod rotation makes motor installation branchFrame 2 moves up and down vertically.
In the above-described embodiments, guide rail 7 is horizontally disposed on workbench 1, tensiometer 4 is arranged on guide rail 7, and 7, guide railSupport and guidance tensiometer 7 are moved along the tangential direction of test line wheel 3.Due in the different sizes to measured motor 9 of replacement, needing pairThe position of motor mounting rack 2 is adjusted, and infrared transmitter 81 and infrared remote receiver 82, the two are also set up on workbench 1It is arranged on the same line, and parallel with guide rail 7.When in use, the position of motor mounting rack 2 is adjusted by regulating device 6It sets, the test line wheel 3 after being installed is in higher position, and infrared remote receiver 82 can receive the transmitting of infrared remote receiver 81Signal is moved down by 6 driving motor mounting bracket 2 of regulating device, until the lower edge of test line wheel blocks infrared transmitter 81The signal of sending, infrared remote receiver 82 can not receive signal again, and regulating device 6 stops working and locks, at this point, pulling out testThe p-wire 5 of line wheel 3 is parallel with guide rail 7, and when tensiometer 4 pulls, p-wire is maintained at pulling direction with always always in this wayOn line, the accuracy of measurement is improved.
When the utility model is used, being moved up motor mounting rack 2 by regulating device 6, will pacify to measured motor 9On motor mounting rack 2, and the installation test line wheel 3 on the output shaft to measured motor 9, by p-wire 5 wound on surveyIt tries in line wheel 3, and one end is connect with tensiometer 4, is then moved down again by 6 driving motor mounting bracket 2 of regulating device,Until infrared remote receiver 82 can not receive the signal of the transmitting of infrared transmitter 81 just.Then it measures, slowly pullsPower meter 4 moves horizontally tensiometer 4 along guide rail 7, when measured motor 9 rotate when, read tensiometer 4 on numerical value, then multiplied byThe radius for testing line wheel 3, can be obtained cogging torque.In order to keep measurement data more accurate, p-wire 5 is pulled to make to test line wheel3 rotation, one circle, take wherein pulling force it is maximum primary.
The above is only the preferred embodiments of the utility model, are not used to limit the scope of the utility model；IfThe spirit and scope for not departing from the utility model, are modified or replaced equivalently the utility model, should all cover in this realityIn novel scope of protection of the claims.