Small concrete mixer manufacturers should not only do their own maintenance and protection in the process of application, but also consider the selection of small concrete pump truck according to the concrete project object, characteristics, the required maximum conveying interval, concrete construction scheme, concrete pump mode and detailed conditions.
The type and structure of construction and the function of concrete pump truck vary randomly. When selecting the model, in addition to considering the amount of concrete pouring, we should also consider the type and structure of construction, construction technical requirements, site conditions and environment, etc. Generally, the primary functional parameters of the selected concrete pump truck shall be consistent with or slightly larger than the construction requirements. If the capacity is too large, the utilization rate is low and too small, which will not only satisfy the requirements, but also accelerate the loss of the concrete pump truck.
Wash the inlet with water before loading each time to keep the inlet wet during loading; Fill the cleaning water tank with water during loading; Wash the inlet after loading and clean the residual concrete near the inlet; After unloading at the construction site, flush the discharge chute, and then add 30-40 l of clean water to the concrete storage tank; Keep the concrete storage tank rolling forward and slowly when the vehicle returns; Remember to discharge the sewage in the concrete storage tank before the next loading; At the end of each day, completely clean the concrete storage tank and around the inlet and outlet to ensure that there is no cement and concrete caking.
Soak a piece #600 of sandpaper in ATF oil for about 30 minutes. Be careful to knock the valve body to make the stuck valve stem fall from the valve cavity hole. It may be necessary to lever it out with a small screwdriver. When using a screwdriver, be careful not to scratch the valve hole. Check the one-way valve stem for signs of conflict. Use the #600 sandpaper soaked in ATF oil to polish the burrs on the valve stem, then clean the valve stem in solvent and blow dry with compressed air.
Roll up half a piece of #600 sandpaper soaked in ATF oil and stab it into the valve hole of the stuck valve stem. Twist the sandpaper quietly to make it loose and tightly fit on the surface of the valve hole, and then twist the sandpaper while pushing and pulling to polish the valve hole. Draw out #600 sandpaper. Completely clean all valve bodies in solvent and blow dry with compressed air. Coat the surface of the valve stem with ATF oil and drop it into the valve bore. The valve stem shall fall into the bottom of the valve hole by its own weight. Otherwise, repeat process 4 and test from scratch. If the valve stem is still stuck, replace the valve body.
Automation and intelligence are the goals of all equipment, especially the concrete pumping equipment with bad environment and high labor intensity. At present, the automatic technology of small concrete pump truck has achieved certain results.
As for the pipe blockage of pump truck, self pipe blockage is often encountered in concrete pumping. If the pipe blockage can be found early and accurate methods can be adopted, it can usually be eliminated. However, if it is found too late or accurate methods are not adopted, the pipeline may be blocked, resulting in long-term suspension of construction and even affecting the construction quality. The anti blocking pipe control selects the pressure sensor to monitor the pipeline from time to time. When the blockage occurs, the pressure in the pipeline will be abnormal. The pressure sensor will transmit this signal to the PLC, and the PLC will immediately announce the warning and take the initiative to adopt the dredging method together.
In terms of intelligent boom, at present, the operator can only directly control the action of each boom to make the boom move to the desired orientation. Each arm of the intelligent boom is equipped with an orientation sensor, which can complete closed-loop control and motion harmony control through the computer.
Because the small concrete mixer will solidify into hard blocks in a short time and have certain corrosivity to steel and paint, cleaning the concrete adhered to the concrete storage tank and the inlet and outlet after each use of the concrete storage tank is a daily protection work that must be carried out carefully. The small concrete pump truck is flexible, and the higher the boom height, the greater the pouring height and distribution radius, and the stronger the construction adaptability. The high boom concrete pump truck should be selected as far as possible in the construction.