CN220568901U - Load testing device suitable for small torque motor - Google Patents

Abstract

The utility model provides a load testing device suitable for a small torque motor, which comprises a testing bench, a supporting rod, a tension meter fixing seat, a tension meter, a loading rope, a motor mounting seat, a motor and a loading disc, wherein the supporting rod is arranged at the top of the testing bench, the tension meter fixing seat is arranged at the tail end of the supporting rod, the tension meter fixing seat is connected with the tension meter, the tension meter is connected with the loading rope, the load is fixed at the tail end of the loading rope, the motor mounting seat is arranged on the testing bench, the motor is fixed on the motor mounting seat, the output end of the motor is fixedly connected with the loading disc, and the loading rope is contacted with the loading disc. The load testing device suitable for the small torque motor is low in cost, easy to realize, high in reliability, simple in equipment maintenance and almost free from the influence of assembly precision.

Description

Load testing device suitable for small torque motor

Technical Field

The utility model relates to the technical field of power machine testing, in particular to a load testing device suitable for a small-torque motor.

Background

The frames of the current mainstream motor load performance testing equipment in the market are shown in fig. 1 and 2, and are divided into the following two types;

the hysteresis dynamometer scheme adopts a hysteresis brake or a magnetic powder brake, torque is obtained by leading different currents into the brake, and then a torque value is monitored by a torque sensor, so that torque parameters loaded by a motor are obtained;

according to the scheme of the servo dynamometer, torque is obtained by feeding current to a standard load motor, then a torque value is monitored through a torque sensor, so that a motor loaded torque parameter and a motor loaded test system are obtained, the two schemes adopt a mode of feeding current to loading equipment to obtain torque and then checking and adjusting through the torque sensor, the mode has the advantages that the cost of the torque sensor and the loading equipment is high, the testing precision depends on the precision of the torque sensor, meanwhile, the cost is high, maintenance and checking are required to be carried out by a professional equipment factory, the coaxiality of the motor to be tested and the loading equipment is required to be in a certain range, if the installation size deviates, the testing result is greatly influenced by the assembly precision, the loading equipment has certain resistance, the testing accuracy of the small torque motor is greatly influenced, and the like, so that the design of the load testing device suitable for the small torque motor is very necessary.

Disclosure of Invention

In order to solve the problems, the utility model provides the following scheme:

the utility model provides a load testing arrangement suitable for little moment of torsion motor, includes, test bench, bracing piece, tensiometer fixing base, tensiometer, loading rope, motor mount pad, motor and loading dish, test bench top sets up the bracing piece, the bracing piece end sets up the tensiometer fixing base, the tensiometer fixing base is connected the tensiometer, the tensiometer is connected the loading rope, loading rope end-to-end is fixed with the load, set up on the test bench the motor mount pad, the motor is fixed on the motor mount pad the motor, the output fixed connection of motor the loading dish, loading rope contact the loading dish.

Optionally, the test bench includes test base and fixed column, the fixed column is fixed test base top one side middle part, the fixed column top is connected through the connecting block the bracing piece, test base top is fixed for fixed column one side middle part the motor mount pad.

Optionally, a groove is formed in the loading disc, the groove is circular, and the loading rope is tangent to the groove.

Optionally, the tensiometer accuracy is substantially greater than the load weight.

According to the specific embodiment provided by the utility model, the utility model discloses the following technical effects: the load testing device suitable for the small-torque motor, provided by the utility model, has the advantages that the tension meter is matched with the loading disc, so that the torque of the small motor can be simply and conveniently measured, the cost is low, and self-control can be easily realized; the testing precision is ensured by the dimensional precision of the jig, so that the reliability is high; the equipment is simple to maintain; the test result is hardly affected by the assembly accuracy; the jig has no resistance, and can greatly improve the test precision.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a hysteresis dynamometer scheme;

FIG. 2 is a schematic diagram of a servo dynamometer scheme;

FIG. 3 is a front view of a load testing apparatus for a low torque motor according to an embodiment of the present utility model;

FIG. 4 is a left side view of a load testing apparatus for a low torque motor according to an embodiment of the present utility model;

fig. 5 is a schematic structural diagram of a load testing device suitable for a small torque motor according to an embodiment of the present utility model;

FIG. 6 is a schematic diagram of a loading tray according to an embodiment of the present utility model;

fig. 7 is a schematic diagram of the operation of the present utility model.

Reference numerals: 1. a test base; 2. fixing the column; 3. a connecting block; 4. a support rod; 5. a tension meter fixing seat; 6. a tension meter; 7. a loading rope; 8. a motor mounting seat; 9. a motor; 10. loading a disc; 11. a load; 12. a groove; 13. a control computer; 14. a motor power supply; 15. a power analyzer; 16. loading a controller; 17. a motor driver to be tested; 18. a junction box; 19. a motor to be tested; 20. a dynamometer portion; 21. a refrigerating device; 22. a servo driver and a control module; 23. an adjustable clamp; 24. a torque sensor; 25. and a load motor.

Detailed Description

The utility model aims to provide a load testing device suitable for a small-torque motor, which has the advantages of low cost, easy realization, high reliability, simple equipment maintenance and almost no influence on the test result by the assembly precision.

In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.

Fig. 1 is a schematic diagram of a conventional hysteresis dynamometer scheme, which comprises a control computer 13, a motor power supply 14, a power analyzer 15, a loading controller 16, a motor driver 17 to be tested, a junction box 18, a motor 19 to be tested, a dynamometer part 20 and a refrigerating device 21; the scheme of the conventional servo dynamometer shown in fig. 3 comprises a control computer 13, a motor power supply 14, a power analyzer 15, a motor driver 17 to be tested, a junction box 18, a motor 19 to be tested, a servo driver and control module 22, an adjustable clamp 23, a torque sensor 24 and a load motor 25.

As shown in fig. 3-5, the simple small motor 9 testing device provided by the embodiment of the utility model comprises a testing bench, a supporting rod 4, a tension meter fixing seat 5, a tension meter 6, a loading rope 7, a motor mounting seat 8, a motor 9 and a loading disc 10, wherein the supporting rod 4 is arranged at the top of the testing bench, the tension meter fixing seat 5 is arranged at the tail end of the supporting rod 4, the tension meter fixing seat 5 is connected with the tension meter 6, the tension meter 6 is connected with the loading rope 7, a load 11 is fixed at the tail end of the loading rope 7, the motor mounting seat 8 is arranged on the testing bench, the motor 9 is fixed on the motor mounting seat 8, the output end of the motor 9 is fixedly connected with the loading disc 10, and the loading rope 7 contacts the loading disc 10. The size of the loading plate 10 can be adjusted according to the torque value of the actual test motor 9, and the larger the torque, the larger diameter of the loading plate 10 can be suitably used.

The test bench comprises a test base 1 and a fixed column 2, the fixed column 2 is fixed at the middle part of one side of the top of the test base 1, the top of the fixed column 2 is connected with the support rod 4 through a connecting block 3, and the top of the test base 1 is fixed relative to the middle part of one side of the fixed column 2, and the motor mounting seat 8 is fixed.

One embodiment of the utility model is: the middle part of the connecting block 3 is provided with a fixing hole which is vertically penetrated, the fixing column 2 penetrates through the fixing hole, the middle part of the right side of the connecting block 3 is provided with an opening groove which is vertically penetrated, the front end and the rear end of the opening groove are provided with holes for penetrating through the clamping device to clamp and fix the opening groove, and the opening groove is communicated with the fixing hole; the left part of the connecting block 3 is provided with a supporting hole which is communicated with the front part and the back part, the supporting column penetrates through the supporting hole, the middle part of the left side of the connecting block 3 is provided with a left-right communicated open slot, the upper end and the lower end of the open slot are provided with holes for penetrating through the clamping device to clamp and fix the open slot, and the open slot is communicated with the supporting hole. The clamping means may be a bolt and nut or a pin.

The tension meter fixing seat 5 is of a convex structure, a front-back through hole is formed in the top of the tension meter fixing seat in a protruding mode and used for penetrating and fixing the supporting rod 4, and the tension meter fixing seat 5 is connected with the tension meter 6 through bolts and nuts.

As shown in fig. 6, the loading disc 10 is provided with a groove 12, the groove 12 is circular, so that the constant stress radius of the loading disc 10 in the rotation process can be ensured, meanwhile, the loading rope 7 can be ensured to be kept stable in the groove 12, and the loading rope 7 is tangential to the groove 12.

The tension meter 6 is much more accurate than the load 11 weight.

The working principle of the utility model is as follows: the weight of the load 11 is denoted as M, the inner diameter radius of the load disc 10 is denoted as r, the number of the tension meters 6 is denoted as n, the device starts the motor 9 to drive the load disc 10 to rotate clockwise, when the load 11 is kept stationary in the air, the load disc 10 is stressed and balanced, at this time, the side contacting the load rope 7 gives the load rope 7 an upward tension T1, the tension meters 6 give the load rope 7 an upward tension T2, at this time, m=t1+t2, and the torque born by the motor 9 at this time is t=r×t1=r (M-T2) =r×m-n.

The load testing device suitable for the small-torque motor, provided by the utility model, has the advantages that the tension meter is matched with the loading disc, so that the torque of the small motor can be simply and conveniently measured, the cost is low, and self-control can be easily realized; the testing precision is ensured by the dimensional precision of the jig, so that the reliability is high; the equipment is simple to maintain; the test result is hardly affected by the assembly accuracy; the jig has no resistance, and can greatly improve the test precision.

The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to assist in understanding the methods of the present utility model and the core ideas thereof; also, it is within the scope of the present utility model to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the utility model.

Claims (4)

1. The utility model provides a load testing arrangement suitable for little moment of torsion motor, its characterized in that, includes, test bench, bracing piece, tensiometer fixing base, tensiometer, loading rope, motor mount pad, motor and loading dish, test bench top sets up the bracing piece, the bracing piece end sets up the tensiometer fixing base, the tensiometer fixing base is connected the tensiometer, the tensiometer is connected the loading rope, loading rope end-to-end is fixed with the load, set up on the test bench the motor mount pad, the motor is fixed on the motor mount pad the output fixed connection of motor the loading dish, loading rope contact the loading dish.

2. The load testing device for small torque motors according to claim 1, wherein the test bench comprises a test base and a fixing column, the fixing column is fixed at one side middle of the top of the test base, the top of the fixing column is connected with the supporting rod through a connecting block, and the top of the test base is fixed with the motor mounting seat relative to one side middle of the fixing column.

3. The load testing device for small torque motors according to claim 1, wherein the loading disc is provided with grooves, the grooves are circular, and the loading rope is tangent to the grooves.

4. The load testing device for small torque motors of claim 1, wherein the tensiometer accuracy is substantially greater than the load weight.