CN201654192U - Caseless Motor Test Set - Google Patents

Abstract

This utility model discloses a casing-less motor testing device, including a testing platform and a dynamometer mounted on the testing platform. The device further includes a bearing housing mounted on the testing platform, with a universal motor spindle mounted in a bearing within the bearing housing. One end of the universal motor spindle is connected to the test shaft of the dynamometer, and the other end is a test end. The test end has a clamp for mounting the rotor, and a removable stator is fitted over the test end. This device is simple to operate when testing motors and significantly improves the accuracy of casing-less motor testing. It can be widely used by manufacturers of motors for products such as refrigerators, air conditioners, electric bicycles, and power tools, as well as by various user industries and quality supervision and inspection agencies for performance testing of casing-less motors.

Description

Caseless Motor Test Set

technical field

The utility model relates to a motor performance test device, in particular to a shellless motor performance test device.

Background technique

All countries in the world attach great importance to the energy consumption indicators of refrigerators, air conditioners, electric bicycles, electric tools and other products, and the requirements are becoming more and more stringent. To this end, the motor must be precisely selected, which relies on accurate measurement of motor performance: torque, speed and output power at no-load, stalled and at various load points.

The common feature of the products in these industries is that the motor does not have its own separate shell, shaft, bearing, end cover and other parts, it is integrated with the host machine of the machine, and shares the shell, shaft, bearing, end cover and other parts. During production, the complete ordinary motor is not purchased from the motor factory, only the stator and rotor are purchased (this article is called a shellless motor). At present, the detection equipment of this type of motor is basically the same as that of the motor with a shell, and usually consists of the following parts: regulated power supply 6, dynamometer 2, dynamometer controller 3, motor under test 1, electrical parameter measuring instrument 5 1. Computer 4 (for processing test data), see Figure 1, its detection method is also according to the detection method of ordinary motors with shells: detect complete ordinary motors and change the parts such as shells, shafts, bearings, end covers and so on. The actual structure of the machine is unknown, and there are too many intermediate links and manual operations of the machine. These factors fluctuate greatly, and they account for a huge proportion in the test results of micro motors, resulting in serious errors, especially for the relative error of micro motor detection.

These errors make it impossible to accurately select the motor. If the torque, speed and output power are too small, the function of the product will not meet the requirements; if the torque, speed and output power are too large, the energy consumption will not meet the standard or be in a competitive disadvantage. Due to the improper method of testing this main link, the important indicator of product energy consumption of many enterprises has become a weakness, which directly leads to lower product grades.

Utility model content

The purpose of this utility model is to:

The technical scheme of the utility model is: to provide a test device for a caseless motor, which is different from the traditional device, can be used for testing the caseless motors in various industries, and improves the test accuracy of the caseless motor.

A test device for a shellless motor, including a test platform, a dynamometer installed on the test platform, characterized in that: the device also includes a bearing seat installed on the test platform, and the universal motor main shaft is installed in the bearing in the bearing seat One end of the universal motor spindle is connected to the test shaft of the dynamometer, and the other end is the test end. There is a fixture for installing the rotor on the test end, and a removable stator is outside the test end.

The preferred technical scheme of the utility model is as follows:

Preferably, the bearing seat is located in the headstock, and the headstock is fixed on the test platform.

Preferably, the fixture includes a threaded hole on the end face of the universal motor spindle at the test end, a shoulder on the universal motor spindle at the test end, a bushing and a baffle that is sleeved outside the universal motor spindle at the test end, and there is a baffle in the middle of the baffle. The through hole, the bolt passes through the through hole to fix the baffle plate and the axle sleeve on the universal motor main shaft.

The beneficial effects of the utility model are as follows:

1. The traditional technical solution needs to assemble the motor every time, and multiple pieces of shafts, bearings and end covers need to be prepared. The difference in diameter between them is reflected in the difference in radial clearance, which is attributed to the power fluctuation of the motor can reach 10W (prepare multiple pieces The reason is that due to the long assembly time, it needs to be assembled while testing). And use the device of the present utility model to measure not to reinstall the transmission part, this item is a constant, and the fluctuation is 0.

2. For the same shaft in the traditional technical solution, the difference in the actual deployment of the axial clearance in each assembly is reflected in the difference in the axial clearance, which makes a great difference in the degree of flexibility. It requires an experienced mechanic to assemble and adjust, which comes down to The motor power fluctuation also exceeds 30W. And use the device of the present utility model to measure not to reinstall the transmission part, this item is a constant, and the fluctuation is 0.

3. The traditional technical solution needs to fill the bearings with grease every time the motor is assembled, which must be just right, otherwise these high-speed motors will either burn the bearings, or the motor power will soar, and the fluctuation can reach 15W. And use the device of the present utility model to measure not to reinstall the transmission part, this item is a constant, and the fluctuation is 0.

4. In the traditional technical solution, each time the motor is assembled, it needs to be connected with the dynamometer with a coupling. The inclination and misalignment between the two shafts will cause the power of the motor to fluctuate by 2-5W. And use the device of the present utility model to measure not to reinstall the transmission part, this item is a constant, and the fluctuation is 0.

The traditional technical solution will cause the motor power test value to fluctuate by 10W-40W every time the motor is assembled, and some can reach 70W, while the motor power of various specifications of the refrigerator compressor is only 50-150W. Therefore, it is impossible to accurately select indicators such as the energy consumption of the motor and the product, and the competitiveness of the product is low. However, the total fluctuation value measured by the device of the utility model does not exceed 10W, which improves the test accuracy of the shellless motor.

Description of drawings

The utility model will be explained by way of example and with reference to the accompanying drawings, wherein:

Fig. 1 is a system connection diagram for detecting motor equipment in the prior art.

Fig. 2 is a front view of an embodiment of the test device for a caseless motor of the present invention.

Fig. 3 is a top view of the device shown in Fig. 2 after the stator is installed.

FIG. 4 is a side view of the device shown in FIG. 2 .

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

The specific embodiment of the utility model, as shown in Fig. 2, 3, 4, is a test device for a shellless motor. The utility model mainly improves the transmission part in the test system. The improved test device for a shellless motor Including a test platform 10, a dynamometer 2 installed on the test platform 10, the device also includes a spindle box 9 installed on the test platform 10, a universal motor spindle 8 is installed in the spindle box 9 through a bearing seat and a bearing, and the universal motor One end of the main shaft 8 is connected with the test shaft of the dynamometer 2, and the other end is a test end. There is a fixture for installing the rotor on the test end, and a removable stator 11 is placed over the test end.

When testing each motor, it is only necessary to install the rotor on the test end of the universal motor main shaft 8. After the rotor is stuck on the shaft shoulder, put the sleeve on the test end, and then fix it with the baffle bolts, and then put the stator 11 on the main shaft. The box body of box 9 is installed on the outer mold of the rotor, and finally the motor and the dynamometer are started for measurement. The whole measurement process is extremely simple, and there is no need to replace the transmission part. In the process of testing different motors, the motor power and torque The friction loss with a large ratio becomes constant, which can reduce the error of detection.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (3)

1. shellless motor proving installation, comprise test platform, be installed in the dynamometer machine on the test platform, it is characterized in that: this device also comprises the bearing seat that is installed on the test platform, the general-purpose machine main shaft is installed in the bearing in the bearing seat, and an end of general-purpose machine main shaft is connected with the test axle of dynamometer machine, and the other end is a test lead, be useful on the anchor clamps that rotor is installed on the test lead, outside test lead, be with the stator that to remove.

2. shellless motor proving installation according to claim 1 is characterized in that: described bearing seat is in main spindle box, and main spindle box is fixed on the test platform.

3. shellless motor proving installation according to claim 1, it is characterized in that: described anchor clamps are included in threaded hole, the shaft shoulder on the test lead general-purpose machine main shaft, axle sleeve and the baffle plate of axle sleeve outside test lead general-purpose machine main shaft on the test lead general-purpose machine main shaft end face, having through hole, bolt to pass through hole in the middle of the baffle plate is fixed on baffle plate and axle sleeve on the general-purpose machine main shaft.

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