What is a concrete pump truck?

A concrete pump truck is usually a boom pump mounted on a mobile truck that is used to move liquid concrete by pumping it using electrical and hydraulic systems integrated in the pump. Concrete moves from the hooper, into the transmission pipes to the discharge hooper from where it is placed on the required area. The pump length usually varies coming with lengths of 35, 50, and 65 or in rare cases 100 meters. The pump is usually folded for ease during transit but usually unfolds and can be controlled and directed to the area where the concrete is to be placed.

The distribution pump is usually mounted on the chassis of a truck to aid in the mobility and to facilitate the movement of the pump to the project site for concrete pumping. The pump can be operated by controls mounted on the truck or remotely using radio control. Distributor boom pumps on concrete pump trucks are usually available in various designs. The most common designs are the multifold, Z fold and roll fold designs.

 

 

The pump works by having a concrete truck empty its concrete in a hooper that is usually on the rear end of the pump truck. To prevent rocks that would clog the pump hoses from getting through the hooper contains a mesh grate. The pump also has an augur that churns the concrete so that it remains in the liquid form so that it can easily flow through the transmission pipes. After being emptied into the hooper, the concrete is subsequently sucked into the valve system through strokes. It is then pushed into the conveyor of hose pipes in liquid form until it reaches the end of the pump pipe. The discharge hooper usually deposits the concrete and it is places it where it is needed.

The operation of the concrete pump truck involves the use of electric and hydraulic systems. There is usually interlinked material and hydraulic cylinders. The material cylinder fetches concrete from the hooper by retracting. Material loaded onto the cylinder is ushered into the S-tube and consequently into the delivery lines by the concrete piston. The material cylinders work interchangeably and simultaneously to ensure continuous concrete movement. Usually the engine provides the operation power of the pump.

To ensure safety and stability the pump usually has front and back outriggers which it can mount on for extra support and balance during concrete pumping. Some outriggers can be extended upto the front of the vehicle. This increases the working range during pumping. The outriggers also minimise the force exerted on the chassis by the distributor boom.

A concrete pump truck is hence is a pumping system mounted onto a truck chassis that employs hydraulic and electrical systems to move concrete deposited into the hooper by a concrete truck to the desired placement position. Precision control and high pump outputs usually ensure the efficient delivery of concrete. Surely a concrete pump truck is the most reliable and efficient means of placing concrete on a construction site.

How does a concrete pump truck work?

A concrete pump truck contains a concrete pump that is fixed to the chassis of a truck. This means the truck drives to the site with the mounted pump on it for concrete pumping to begin. The pump is usually hydraulic and can lift and place concrete pipes straight into the pour location. During set up at the site the concrete pump truck’s outriggers at the front and rear are drawn to anchor and provide stability during the concrete pumping.

The first step is usually the dumping of wet concrete from a mixer truck onto a hooper at the rear end of the concrete pump truck. Large rocks are prevented from falling through by a mesh grate located in the hooper. This is crucial as it prevents large rocks from blocking the hoses during complete pumping. An augur in the hooper also keeps churning the concrete so that it is in a liquid state.

The concrete will then flow into the piston pump’s twin cylinders. The twin material cylinders work in coordination. On the forward stroke, one cylinder push the concrete into the pipeline while the other retracts drawing material from the hooper. To ensure that concrete flows freely and to keep the pressure consistent the pistons move in opposite directions.

Once the material cylinder has retracted a signal is sent to the S-tube swing cylinder and the drive cylinder directional valves. The S-tube moves to the loaded material cylinder. Consequently, the concrete material on the loaded cylinder is pushed through the S-tube by the loaded cylinders’ concrete piston. The concrete is pushed further forward onto the delivery lines.

The pump can be operated by remote control or can be operated from the control panel. Hydraulic oil flow push the cylinder pistons. The drive cylinder pistons and concrete pistons move at the same time as they are linked. When a drive cylinder is drawn in the same will happen to the concrete piston. Concrete is drawn into the cylinder in the process. The concrete is subsequently moved onto the S-tube and through the concrete pipes. The S-tube valve switches to the other material cylinder at the end of the stroke continuing the cycle.

The engine provides the power to drive the hydraulic pumps. All controls can be done locally as they are mounted on the truck. It is also possible to use remote radio control from a distance to specify the pour, to direct the pour to the desired location and for all other operations. At the end of pour reverse pumping can be done to clean the hoses.

A concrete pump truck can be used to pump concrete at the rate of one meter cubed per minute. The hydraulic pump also guarantees a precise pour and the ability to navigate various obstacles. Integration of electrical and hydraulic systems in the concrete pump truck ensure that seamless performance is achieved. Lastly the inherent advantages of using a concrete pump truck are self-evident. There is quick delivery, adequate time to work on concrete and cost savings on manpower.