Hydraulic pumping system and concrete-pumping equipment comprising same

Abstract

The invention discloses a hydraulic pumping system for concrete-pumping equipment, which comprises a first main oil cylinder (1), a second main oil cylinder (2), a main oil pump (10) and a pressure-stabilizing device (12), wherein the main oil pump (10) is used for alternately supplying oil for the first main oil cylinder (1) and the second main oil cylinder (2); and the pressure-stabilizing device (12) is used for supplying high-pressure hydraulic oil for the first main oil cylinder (1) or the second main oil cylinder (2) and realizing rapid concrete compaction when the hydraulic pumping system is reversed, and an oil outlet of the pressure-stabilizing device (12) is communicated with an oil-supplying path of the main oil pump (10). Concrete in a conveying cylinder can be rapidly compacted by the hydraulic pumping system, so that the generation of concrete impacts at the stage of concrete compaction is avoided, and the working stability of the pumping system is improved. The invention also discloses the concrete-pumping equipment which comprises the hydraulic pumping system and has the same effect.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a pumping hydraulic system for concrete pumping equipment. In addition, the present invention also relates to a concrete pumping equipment comprising the above pumping hydraulic system. Background technique [0002] With the rapid development of economic construction, various large-scale projects in my country are gradually increasing, and concrete pump trucks are also developing in the direction of high pressure and large displacement. In particular, more stringent requirements are put forward for the stability of the pumping hydraulic system. [0003] Please refer to figure 1 , figure 1 It is a working principle diagram of a pumping hydraulic system in the prior art; the following briefly introduces the working defects of this pumping hydraulic system. [0004] Such as figure 1 As shown, the pumping hydraulic system includes a first master oil cylinder 1, a se...

AI Technical Summary

Problems solved by technology

[0012] However, since the pumping hydraulic system reduces the displacement of the hydraulic pump to the minimum when reversing, the displacement of the hydraulic pump gradually increases from the minimum after reversing at a slow speed, which takes a certain amount of time and cannot meet the needs of the delivery cylinder. The need for compacted concrete will cause strong concrete impact due to discontinuous concrete pressure, which will cause large vibrations in the delivery pipe, arm frame, oil cylinder and other components of the concrete pumping equipment, which will reduce the service life of the equipment and affect the construction efficiency. certain security risks

Images