Concrete pump truck and control method thereof as well as pumping system and distribution mechanism thereof

Abstract

The invention discloses a distribution mechanism of a pumping system, the pumping system, a concrete pump truck and a control method of the pumping system. The disclosed distribution mechanism of the pumping system comprises a wear-resistant plate and at least two distribution pipes; the output ends of the distribution pipes are rotatablely connected to form a rotation axis; the input ends of thedistribution pipes deviate from the rotation axis, and the end surface of each input end is matched with the wear-resistant surface of the wear-resistant plate; and the wear-resistant plate is provided with at least three feeding holes, and when each distribution pipe rotates around the rotation axis, the input end of each distribution pipe can be communicated with at least two feeding holes. When the distribution mechanism of the pumping system provided by the invention is utilized, the pumping action of at least two feeding cylinders can be coordinated by rotating the distribution pipes, sothat the pumping system can continuously pump materials outward; and furthermore, by controlling the kinematic relation among feeding cylinder pistons, the pumping system can uniformly pump materialsoutward, thereby reducing or avoiding the vibration caused by pulsating flow of the materials.

Description

technical field [0001] The present invention relates to a technology for pumping concrete or other viscous materials, in particular to a distribution mechanism of a pumping system, a pumping system including the distribution mechanism, and a concrete pump truck including the pumping system; also provides a A control method for a pumping system. Background technique [0002] Concrete pump truck is one of the most widely used concrete machinery. Concrete pump trucks generally include a pumping system and a boom system. The pumping system generally includes a hopper, a conveying cylinder and a distribution valve; the boom system includes a boom and a conveying pipe. The boom includes a plurality of sections hinged sequentially through a transverse hinge shaft, and the conveying pipe includes a plurality of sequentially connected pipes. The pipes are respectively fixed on the joint arms. The hopper is used to store concrete; the distributing valve can be driven by the swing c...

AI Technical Summary

Problems solved by technology

Although this technology can reduce or eliminate the intermittent flow of concrete through the cooperation of two sets of mechanisms, when the delivery cylinder is pumping material, the piston of the delivery cylinder will have a change process of acceleration, average speed and deceleration, which will make the concrete Perform pulsating and unstable flow, and unstable flow will still cause the boom to vibrate; in addition, the pumping system is essentially a combination of two mechanisms, not only failing to substantially change the structure of the pumping system, Moreover, the structure of the pumping system is complicated, resulting in a very complicated control process

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