Concrete machinery includes concrete mixing plant, concrete mixer truck, trailer pump, truck-mounted pump, boom concrete truck, etc. Among them, the concrete pump trailer, truck mounted concrete pump and concrete pump truck are all concrete conveying equipment, which pump concrete to the designated pouring point.
The boom concrete pump truck is to install the pumping system, hydraulic system, electric control system and boom system on the truck to transport the concrete to a certain height or distance.
In terms of construction efficiency, the pump truck is also the highest. The maximum driving speed of the pump truck chassis can reach 80Km/h, and the boom is controlled by a wireless remote control system. The operator can control the pump truck boom within a distance of 100 meters.
Because of its flexibility, and the higher the boom height, the larger the pouring height and the distribution radius, and the stronger the construction adaptability. The boom with a length of 20-33m is a large-scale and wide-ranging product on the market, accounting for about 75%. The long boom will be the main model in construction.
In addition, due to the limitation of the bearing capacity of the vehicle chassis, the cost of the boom increases greatly when the height of the boom exceeds 42m, and is limited by the construction site space, so it is generally rarely used.
Most engineers hope that the concrete will be finished as soon as possible. Therefore, the theoretical pumping volume of the pump truck needs to be clarified. The theoretical pumping volume is obtained under severe conditions, therefore, the actual pumping volume per unit time must be smaller than this.
During the actual working, the pumping volume is inversely proportional to the pumping concrete pressure, which mainly depends on the constant power of the pumping system, the working state of the placing boom, and the inevitable downtime and intermittent time in actual engineering construction.
The technical difficulty of the long-boom pump truck is how to ensure the rigidity of the boom and how to deal with the vibration problem of the boom during operation. The more the number of booms, the better the flexibility. 20m concrete pump from Haomei Machinery is such a pump.