Hose operation process should pay attention to the following three aspects:
First, start or stop pumping concrete should contact the front hose operator. The bending radius of the front hose should be greater than 1m, and the operator should not stand at the exit of the pipe to prevent the sudden ejection of concrete material.
The conveying pipe of the small concrete pump truck should be fixed and padded, and it is strictly prohibited to bend the conveying hose to avoid the hose explosion. When the pipeline is blocked and pumped after treatment, the end of the soft joint will swing rapidly, the concrete may be sprayed instantly, and the staff shall not be near the hose.
Do not stand on the corner of the building with the end hose in hand. The shaking of the hose or the concrete spray may cause the operator to fall.
Second, before the small concrete pump truck pumps concrete, first pump water, check the pipe card, to ensure that the seal is not permeable, and then pump the pipeline lubricant, generally use mortar, can also use cement slurry. The mortar is poured into the hopper for pressing. When the mortar is about to be pressed, it can be poured into the concrete that meets the requirements for normal pressing. If the mortar pressing is blocked, the front section of the pipe can be removed, the internal dewatering block can be removed, and the pipe can be connected properly.
Third, when the small concrete pump truck is running, it is strictly prohibited to put your hand into the hopper and water tank. During the pumping process, the concrete material should be guaranteed to be above the mixing axis, and it is not allowed to suck or pump without material. If the pump is suspended for a long time, the pump must be turned on every (15-30)min, and the reverse pump is 1-2 strokes, and the positive pump is 1-2 strokes to prevent the concrete in the pipe from condensing.
There are also a lot of hose precautions for small concrete pump trucks, reminding everyone to often check whether the hose safety chain is firmly connected to the boom, and pay attention to preventing rubber hoses from bending and blocking when the pump trucks are operating. Safe operation standards, civilized construction, safe construction.
