Concrete pumping equipment and arm-support-vibration semi-active control device and arm-support-vibration semi-active control method thereof

A semi-active control and active control technology, applied in vibration suppression adjustment, mechanical equipment, transportation and packaging, etc., can solve the problems of boom vibration control, fracture, sealing device damage, structural connection position, etc.
CN102493652AActive Publication Date: 2012-06-13ZOOMLION HEAVY IND CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
ZOOMLION HEAVY IND CO LTD
Publication Date
2012-06-13

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Abstract

The invention provides concrete pumping equipment and an arm-support-vibration semi-active control device and an arm-support-vibration semi-active control method thereof. The arm-support-vibration semi-active control device comprises a plurality of sections of arm supports (10) and extension mechanisms (20) connected between two adjacent sections of arm supports (10). The arm-support-vibration semi-active control device further comprises changing dampers arranged at the extension ends or fixed ends of the extension mechanisms (20) in series connection mode, sensors arranged on the arm supports (10) and controllers (40) connected with the sensors. Signal output ends of the controllers (40) are connected with the changing dampers to control damping force of the changing dampers, and the changing dampers exert damping force in the reversed direction with the vibration direction of the arm supports (10) on the arm supports (10). The arm-support-vibration semi-active control device can not only passively play the roles of damping, energy consumption and vibration reduction, but also actively play the roles of vibration control, thereby being good in control effect on arm support vibration, simple in structure and flexible and convenient to use.
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Description

technical field

[0001] The invention relates to the field of concrete pump trucks in engineering machinery, in particular to a semi-active control device and control method for concrete pump equipment and its boom vibration. Background technique

[0002] The concrete pump truck jib is a typical flexible multi-body system with large span, low stiffness and low natural frequency. In the actual pumping process, the boom system, especially its high-section boom section, is prone to severe vibrations. This severe vibration not only affects the normal construction of the pump truck, but also reduces the normal service life of the pump truck. The main reasons for the violent vibration of the boom are as follows: the posture of the boom is complex and changeable, and the natural frequency of the boom system with different postures is quite different. Stable working condition.

[0003] At present, the vibration of the boom of the pump truck has become one of the difficult problems ...

Claims

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