Tower crane eddy current controller using direct current common bus voltage

A DC bus, common bus technology, applied in the direction of controlling electromechanical brakes, control systems, protection against overcurrent, etc., can solve the problems of complex overall structure, complex structure, etc. The effect of small restrictions

Pending Publication Date: 2022-05-27
浙江一通电子科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, when the common tower crane is shifting gears and parking, the power grid supplies power to the eddy current coil of the slewing mechanism motor through the slewing eddy current controller corresponding to the braking position, so as to apply braking force to the boom and trolley, but such The control method requires multiple eddy current controllers, and each eddy current controller needs to be connected to the corresponding rectification circuit, resulting in a more complex overall structure
Therefore, the existing vortex controllers for tower cranes have the problem of complex structure.

Method used

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  • Tower crane eddy current controller using direct current common bus voltage
  • Tower crane eddy current controller using direct current common bus voltage

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but not as a basis for limiting the present invention.

[0015] Example. A tower crane eddy current controller using the DC common bus voltage is composed of figure 1 and 2 As shown, a transformer 2 is electrically connected to the output end including the DC bus 1 and the DC bus 1, the output end of the transformer 2 is electrically connected to the central processing unit 3, and the output end of the central processing unit 3 is electrically connected to the eddy current coil. 4. A frequency converter 5 is electrically connected between the DC bus 1 and the transformer 2, and a braking resistor 6 and a charging circuit 7 are electrically connected between the frequency converter 5 and the transformer 2; the braking resistor 6 and the charging circuit 7 are connected in parallel connect.

[0016] The charging loop includes a voltage regulator IC, a ca...

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Abstract

The invention discloses a tower crane eddy current controller utilizing direct current common bus voltage. The tower crane eddy current controller comprises a direct current bus (1) and a transformer (2) electrically connected with the output end of the direct current bus (1). The output end of the transformer (2) is electrically connected with a central processing unit (3), and the output end of the central processing unit (3) is electrically connected with an eddy current coil (4); a frequency converter (5) is electrically connected between the direct current bus (1) and the transformer (2), and a brake resistor (6) and a charging loop (7) are electrically connected between the frequency converter (5) and the transformer (2); and the brake resistor (6) is connected in parallel with the charging loop (7). The device is simple in overall structure and has the advantages of being high in use safety, convenient to assemble and configure, good in control effect and convenient to use.

Description

technical field [0001] The invention relates to a controller for tower cranes, in particular to a tower crane eddy current controller utilizing the DC common bus voltage. Background technique [0002] At present, when the common tower crane is shifting and parking, the power grid supplies power to the eddy current coil of the slewing mechanism motor through the slewing eddy current controller corresponding to the braking position, so as to apply the braking force to the boom and the trolley, but such In the control method, multiple eddy current controllers need to be set up, and each eddy current controller needs to be connected to a corresponding rectifier circuit, resulting in a complex overall structure. Therefore, the existing eddy current controller for tower cranes has the problem of complicated structure. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to provide a tower crane eddy current controller utilizing the DC common bus voltage. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P15/00H02H3/08H02H7/00
CPCH02P15/00H02H3/08H02H7/00
Inventor 方建飞朱桂林叶志云何涛涛马孝志范俊红贾献峰
Owner 浙江一通电子科技有限公司
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