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Electromagnetic drive method and device for concrete pump truck arm fatigue tests

A concrete pump truck, electromagnetic drive technology, applied in the direction of measuring device, vibration test, machine/structural component test, etc., can solve the problems of increased test cost, high manufacturing cost, huge structure, etc., easy to implement and practical , easy operation and simple installation process

Inactive Publication Date: 2010-12-15
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the manufacturing cost of this mechanical pump truck arm frame fatigue test device is relatively high, the structure is huge, heavy, and the energy consumption is large, which brings inconvenience to the test and increases the cost of the test.

Method used

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  • Electromagnetic drive method and device for concrete pump truck arm fatigue tests
  • Electromagnetic drive method and device for concrete pump truck arm fatigue tests

Examples

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Effect test

Embodiment 1

[0024] An electromagnetic drive device for concrete pump truck boom fatigue test, which is composed of a permanent magnet 8, an electromagnet 6, a bracket 3, a frequency converter 1, a cable 2, a height adjustment device 4, a platform 5, and a protective cover 7. The magnet 8 is fixedly installed on the lower surface of the top end of the concrete pump truck arm frame 9 used for fatigue test research, the support 3 is arranged below the top end of the concrete pump truck arm frame 9, and the height adjustment device is installed on the support 3 ( 4), the height adjustment device (4) is screwed to the support (3) by one end of a screw rod, the other end of the screw rod is provided with a platform 5, and a cable 2 and frequency conversion are installed on the platform 5 One end of the inverter 1 is electrically connected to the electromagnet 6, and the other end of the frequency converter 1 is connected to 220V alternating current; a protective cover 7 is set on the electromagn...

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Abstract

The invention discloses an electromagnetic drive method and an electromagnetic drive device for concrete pump truck arm fatigue tests. The electromagnetic drive method comprises the following steps of: fixing at least one permanent magnet at the top end of a concrete pump truck arm used for the fatigue tests; arranging a bracket below the top end of the concrete pump truck arm, and arranging an electromagnet electrically connected with a frequency converter on the bracket; and starting the frequency converter, changing magnetic poles of the electromagnet electrically connected with the frequency converter according to set frequency, and periodically changing the direction of a magnetic force between the electromagnet arranged on the bracket and the permanent magnet arranged at the top end of the concrete pump truck arm to promote the concrete pump truck arm fixedly connected with the permanent magnet to swing according to the set frequency so as to realize concrete pump truck arm fatigue tests and researches. The method of the invention has the advantages of simplicity, convenient operation, small equipment volume, low cost, simple mounting process, high flexibility, easy regulation, wide application, suitability for industrial application and capability of providing a novel drive mode for the concrete pump truck arm fatigue tests.

Description

technical field [0001] The invention discloses a concrete pump truck boom fatigue test driving method and device, in particular to an electromagnetic driving method and a concrete pump truck boom fatigue test driving method and device; it belongs to the technical field of construction machinery manufacturing. Background technique [0002] The boom is one of the most important key components of a concrete pump truck, and its safety, reliability and advancement are the keys to determining the core competitiveness of the pump truck. The boom of the concrete pump truck vibrates at low frequency during operation. Under the action of alternating stress, the boom of the pump truck will crack or even break due to fatigue damage, causing heavy losses. [0003] In order to have a clearer understanding of the fatigue performance of the boom of the concrete pump truck and optimize the design of the boom, it is necessary to carry out a fatigue test on the boom of the pump truck. The cur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M7/02
Inventor 马昌训吴运新滑广军唐宏宾王帅
Owner CENT SOUTH UNIV
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