Analysis of the collaborative working mechanism and operation coordination between the fabric system of the concrete pump truck boom and the pumping system

Concrete pump truck is an efficient equipment that integrates concrete pumping and cloth functions on a dedicated chassis. Its core lies in the precise collaborative work of the boom cloth system and the pumping system.Understanding how these two systems coordinate and cooperate, and mastering the main points of coordination in operation, is the key to achieving continuous, efficient and safe concrete pouring.The pumping system is the "heart”. It pushes the concrete piston through the reciprocating movement of the hydraulic cylinder, sucks the concrete in the hopper into the pumping cylinder, and then alternately presses it into the conveying pipe through the S-pipe valve or skirt valve, and finally delivers it to the hose at the end of the boom.Its working parameters such as pumping pressure and displacement (frequency) can be adjusted according to the concrete label, conveying distance and height.

The boom cloth system is an "arm”, which consists of a multi-section hydraulically driven boom, which precisely moves the end hose to the designated pouring point through actions such as rotation, folding, and expansion (some models).Its operation requires smooth and accurate.The synergy between the two systems is that the pumping system provides a continuous concrete flow, and the boom system is responsible for guiding this flow to the desired location.The operator needs to coordinate and control the movement of the boom and the pumping displacement.For example, when pouring, the pumping should be started first, and after the concrete flows out stably from the end hose, the boom should be operated for spraying; before stopping pouring, the boom should be stopped moving, then the pumping should be stopped, and the pump should be reversed several times to remove the residual pressure in the pipe and prevent concrete splashing.During the pumping process, the boom should be avoided from moving significantly and quickly, because this will produce impact loads, affect the stability of the pump truck, and may lead to concrete segregation.

The coordination of operation is also reflected in the interaction between the attitude of the boom and the pumping pressure.The longer the boom is unfolded and the higher the vertical height, the greater the pumping resistance and the higher the pumping pressure.When the boom needs to change its attitude, the pumping speed should be appropriately reduced or the pumping should be suspended, and the boom should be stabilized before resuming to prevent suffocation.In addition, the operator needs to always pay attention to the stability of the outriggers of the pump truck and the safe distance between the boom and the surrounding obstacles.Through training and practice, the operator's perception of subtle dynamics such as pumping pressure changes and boom vibration is cultivated, so as to realize the natural tacit cooperation of the two systems like hands and feet, which is the essence of the technique to ensure smooth, safe and efficient concrete pumping operations.