Hub type liquid cooling permanent magnet dynamometer

A dynamometer, liquid cooling technology, applied in power metering, measuring devices, instruments, etc., can solve problems such as difficult to adjust torque, achieve the effect of no power consumption, stable and lasting load torque, and saving copper resources

Inactive Publication Date: 2009-03-11
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The distance adjusted by this disc structure is not in a linear relationship with the torque of the dynamometer, and the load torque is very sensitive to the distance between the stator disc and the rotor disc, making it difficult to adjust to the required torque

Method used

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  • Hub type liquid cooling permanent magnet dynamometer
  • Hub type liquid cooling permanent magnet dynamometer
  • Hub type liquid cooling permanent magnet dynamometer

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with accompanying drawing:

[0016] The torque load control mode of the present invention has two structures of automatic control and manual control, which will be described in detail below in conjunction with the accompanying drawings.

[0017] The torque load automatic control structure of the present invention is as Figure 1 ~ Figure 2 As shown, it includes a housing 11 , brackets 5 and supports 13 fixed at both ends of the housing 11 , a stator and a rotor arranged in the housing 11 . The stator is composed of a stator hub 7 , a sealing cover 8 , a housing 11 and a moving disc 12 . The bracket 5 is connected with the shell 11 through bolts, the sealing cover 8 and the spiral water channel on the stator hub 7 form a liquid cooling device, the end surface of the stator hub 7 is fixedly connected with the moving plate 12, and the moving plate 12 is connected with the moving control structure through...

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PUM

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Abstract

The invention relates to a water circulation cooling hub type liquid cooling permanent magnetic dynamometer, belonging to power machine testing equipment. The dynamometer comprises a shell, a stator and a rotor; the rotor comprises a magnet retainer and a plurality of permanent magnets fixed at the periphery of the magnet retainer. The stator comprises a stator hub and a moving plate fixed at the end face of the stator hub. The outer surface of the stator hub is provided with a spiral water channel which is sealed by a sealing cover on the spiral water channel so as to form a liquid cooling device. The sealing cover and the shell are linked by a guideway mechanism, the moving plate is connected with a control mechanism, and the stator hub, the sealing cover and the moving plate can slide along the axial direction in the shell under the control of the control mechanism. Loading torque generated by the dynamometer in the invention is easy for continuous adjustment; the permanent magnet is used for replacing the magnet exciting coil of an electric eddy current dynamometer, therefore, copper resource is saved, no electrical energy consumption exists during stable operation, and the loading torque is stable for a long time during high speed; the sealed water circulation cooling system has good cooling effect, does not generate noise and is applicable for occasions having high requirement on the noise.

Description

technical field [0001] The invention belongs to power machinery testing equipment, and relates to a hub-type liquid-cooled permanent magnet dynamometer cooled by water circulation. Background technique [0002] The dynamometer, also known as the loader, is mainly used to test the power of the power machine, and can also be used as a load device for gear boxes, gearboxes, reducers and other equipment to test their dynamic parameters. At present, the widely used dynamometer is the eddy current dynamometer. The eddy current dynamometer generates the reverse load torque through the eddy current induced by the changing magnetic field, and applies the load to the output shaft of the test power machine to measure the power of the power machine. power. [0003] The Chinese patent ZL200820079243.9 titled "A Water-cooled Permanent Magnet Eddy Current Dynamometer" discloses a disc-type liquid-cooled permanent magnet dynamometer. It controls the torque of the dynamometer by moving the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L3/24
Inventor 李德胜叶乐志马元京王文武孙雷春
Owner BEIJING UNIV OF TECH
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