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.

Active Publication Date: 2012-06-13
ZOOMLION HEAVY IND CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the vibration of the boom of the pump truck has become one of the difficult problems for construction machinery. The existing concrete pump truck does not carry out effective vibration control for the boom. During the concrete pumping process, the boom and its delivery pipe are often in severe Vibration, in severe cases, will cause damage to hydraulic components, sealing devices and breakage of structural connections

Method used

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

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Embodiment Construction

[0059] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0060] Such as figure 1 and figure 2 As shown, according to the embodiment of the present invention, the boom vibration semi-active control device includes a multi-section boom 10, a telescopic mechanism 20 arranged between two adjacent booms 10 and adjusting the swing angle of the boom 10, and a The sensors at the two ends of the boom 10, the controller 40 connected with the sensor, and the variable damper connected in series on the telescopic mechanism 20 and controlled by the controller 40, the variable damper changes its own damping under the action of the controller 40, and the arm The frame 10 applies a damping force opposite to the vibration direction of the boom 10 to minimize the vibratio...

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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.

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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Application Information

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IPC IPC(8): E04G21/04
CPCE04G21/0454F16F15/00E04G21/0436B66C13/066
Inventor 曾光吴德志刘仰清王惠科朱俊辉
Owner ZOOMLION HEAVY IND CO LTD
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