Tuesday, July 28, 2015

Safe use of concrete pumps



Safe use of concrete pumps:
(1) with the stability of concrete pumps: Concrete pumps running state, and hydraulic truck crane is very similar, but something more concrete pump tops, large vehicle weight, center of gravity position may be higher, thus maintaining driving stability more negative, so we should be careful to drive.
(2) fabrics work state stability: concrete pump when the fabric is absolutely necessary legs, the legs do not fight are not allowed to expand the fabric arm. Therefore, fabric work is stable zone wiring center of each leg of the drawn rectangle. Since there is no counterweight concrete pumps, tipping torque, and torque limiter no protection, so job stability must be absolutely guaranteed. The approach is to increase the span between the legs, so tipping line relocation. Since the concrete pump is calculated according to the state-wide overhanging fabric work stability, it is not the lifting operation as there is uncertainty, so it will not tilt under normal circumstances. But absolutely not allowed to lift concrete pump, concrete pump design because there is no calculated lifting conditions, uncertainties brought no lifting into account, if you go with a concrete pump crane arm will have accidents.
(3) the turn-stop: concrete pump hydraulic hoses on the lot, as well as fabrics fittings, do not allow excessive one-way rotation, usually with a limit switch to the alarm, the allowed range is 360 degrees.
(4) on the job site requirements: concrete pump job should choose a flat, solid legs playing field, there should be some distance away from the slope. Its leg support reaction force is large, so to prevent landslides. You may not have high-voltage lines or bare wire to prevent electric shock in the operating range of the boom.

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