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Pressure compensation device for concrete pumping and concrete pumping device

A technology for pressure compensation and concrete pumps, which is applied in the direction of pumps, pump control, liquid variable displacement machinery, etc., and can solve problems such as structural fatigue that cannot be eliminated, and the life of boom vibration vulnerable parts is reduced.

Active Publication Date: 2016-01-27
ZOOMLION HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, according to the time-pressure curve diagram of accompanying drawing 5 of this patent document, the concrete pipeline buffer structure can only alleviate the pressure change during the concrete pumping process, but cannot eliminate the structural fatigue, boom vibration, and vulnerability. The root cause of reduced component life

Method used

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  • Pressure compensation device for concrete pumping and concrete pumping device
  • Pressure compensation device for concrete pumping and concrete pumping device
  • Pressure compensation device for concrete pumping and concrete pumping device

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Embodiment Construction

[0028] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0029] like figure 2 and 3 As shown, the pressure compensation device for concrete pumping provided by the present invention includes a cylinder 11 and a hydraulic control unit, wherein,

[0030] A piston is arranged in the cylinder body 11, and the piston divides the inner cavity of the cylinder body 11 into a hydraulic chamber 12 and a concrete chamber 13, and the opening 14 of the concrete chamber 13 can be in fluid communication with the concrete pumping pipeline; The hydraulic control part controls the hydraulic pressure in the hydraulic chamber 12 according to the pumping pressure in the concrete pumping pipeline, so as to control the movement of the pi...

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Abstract

The invention discloses a pressure compensation device for concrete pumping. The pressure compensation device comprises a cylinder body (11) and a hydraulic control part; a piston is arranged inside the cylinder body and divides an inner cavity of the cylinder body (11) into a hydraulic cavity (12) and a concrete cavity (13); an opening (14) of the concrete cavity (13) can be communicated with fluid in a concrete pumping pipeline; the hydraulic control part controls hydraulic pressure in the hydraulic cavity (12) according to pumping pressure in the concrete pumping pipeline so as to control the movement of the piston. The pressure compensation device can keep pressure in the concrete conveying pipeline constant during concrete pumping. The invention further discloses a concrete pumping device with the pressure compensation device.

Description

technical field [0001] The invention relates to the technical field of concrete construction equipment, in particular to a concrete pumping pressure compensation device capable of maintaining a constant pressure in a concrete delivery pipeline, and a concrete pumping device with the pressure compensation device. Background technique [0002] The concrete pumping device of the concrete pump truck is usually connected with the concrete delivery pipe, and a part of the concrete delivery pipe is fixed by the bracket on the concrete pump truck and the boom system, so that the concrete is pumped to the designated location through the concrete delivery pipe by the concrete pumping device . [0003] figure 1 A structural form of an existing concrete pumping device is shown. like figure 1 As shown, in this concrete pumping device, the piston rod of the main cylinder 1 is connected to the concrete cylinder 4 through the water tank 3 , and at the same time, the piston rod of the oth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B15/02F04B49/08
Inventor 邢志钢余德海王佳茜邝昊
Owner ZOOMLION HEAVY IND CO LTD
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