Boom system and pumping machinery

A boom and pumping technology, which is applied in the field of boom systems and pumping machinery, can solve the problems of not being able to reduce concrete pulses and the limited effect of vibration reduction technology solutions, and achieve the goal of slowing down turbulence, reducing vibration and improving stability Effect

Active Publication Date: 2010-11-17
SANY HEAVY IND CO LTD (CN)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The technical solutions disclosed in these patent documents are only from the perspective of controlling the attitude of the boom to contain the amplitude of the vibration at the...

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  • Boom system and pumping machinery
  • Boom system and pumping machinery
  • Boom system and pumping machinery

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Embodiment Construction

[0027] The present invention will be described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present invention. The technical solution provided by the present invention is described below taking the concrete pump truck as an example, but the technical solution provided by the present invention is not limited to the application in the concrete pump truck, and can also be applied to pumps for conveying ash, mud and other viscous materials sent to the machine.

[0028] The basic core of the present invention lies in: reducing the back pressure of the concrete flow field in an appropriate way at the appropriate position where the concrete flows through can effectively improve the turbulent flow of the concrete flow field, reduce the concrete pulsation amplitude, and reduce the vibration of the fluid itself energy. Based on this ba...

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Abstract

The invention discloses a boom system and pumping machinery provided with the boom system. The boom system comprises a delivery pipe and a vibration damper connected with the delivery pipe; the vibration damper forms a pressure reduction segment and an inlet and an outlet communicated with the pressure reduction segment; and the through-flow section of the pressure reduction segment is larger than that of the inlet and that of the outlet. In the preferential technical scheme, the vibration damper also comprises an expansion segment positioned between the inlet and the pressure reduction segment, and a contracted segment positioned between the pressure reduction segment and the outlet, wherein, the through-flow section of the front end of the expansion segment is smaller than that of the back end thereof; the through-flow section of the front end of the pressure reduction segment is not smaller than that of the back end of the expansion segment; the through-flow section of the front end of the contracted segment is larger than that of the back end thereof; and the through-flow section of the back end of the pressure reduction segment is not smaller than that of the front end of the contracted segment. In the boom system, the pressure reduction segment of the vibration damper can reduce the pulsation amplitude of fluid, thus further reducing vibration of the boom system caused by fluid pulsation.

Description

technical field [0001] The invention relates to a technique for pumping viscous fluids such as concrete, in particular to an arm support system and a pumping machine with the arm support system. Background technique [0002] Concrete pump truck is one of the most widely used concrete machinery. Concrete pump trucks generally include pumping devices and boom systems. The pumping device generally includes a hopper, a delivery cylinder and a distribution valve. The hopper is used to store concrete. The distribution valve can be driven by the swing cylinder to perform state conversion and form the output port of the pumping device. The boom system includes a boom and a conveying pipe. The boom includes a section arm formed by sequentially hinged and connected through a transverse hinge shaft. It has an input port and an output port, the input port communicates with the output port of the distribution valve, and the output port is provided with a corresponding hose, so as to ac...

Claims

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Application Information

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IPC IPC(8): E04G21/02F16L55/02
Inventor 周翔喻志平
Owner SANY HEAVY IND CO LTD (CN)
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