Code for construction of safe concrete

During the construction of concrete pump, we should pay special attention to the safety problem of construction. Every year, a lot of people are injured or killed. Therefore, safety is urgent.

1. The pumping equipment should be placed at a certain distance from the edge of the foundation pit.

Two. When the wind is more than six and above, the concrete pump can not use the material rod. When the weather is hot application of wet sacks, straw cover pipe temperature.

Three. The pipeline laying on the horizontal pump is reasonable. The pipe and pipe support must be fastened and reliable, and the pipe joint should be sealed and reliable.

Four. The particle size of sand and gravel, cement mark and mix ratio should meet the pump requirement of concrete pump. When pumping, the material in the hopper should be higher than the height of the suction inlet to prevent the injure of the air.

Five, it is strictly prohibited to directly connect vertical pipes to the outlet of the pump. The front end of the vertical pipe should be installed at a length of not less than 10m horizontal pipe, and the horizontal pipe should be equipped with check valve near the pump. When laying a downward inclined pipe, the lower end should be fitted with a horizontal pipe, the length of which is at least five times the tilt of the high generation difference. Otherwise, the pipe can be used organically. Increase the force of the shade. If the inclination is larger, the exhaust valve should be installed at the upper end of the ramp to benefit the exhaust.

Six, the parking brake and locking brake of the pumping equipment should be used simultaneously, and the tires should be wedged tightly. The cooling water supply is normal, the water tank should be filled with clean water, the hopper should be no sundries, and the lubricating points should be lubricated normally.

Seven, prepare the cleaning tubes, cleaning supplies, the ball feeder and the related devices. Before the concrete pump operation, it is necessary to use the cement mortar to lubricate the pipe according to the regulations. The unrelated personnel must leave the pipeline.

Eight, the leg should be fully extended and supported, and the cloth rod should not be started before the support is not supported. The cloth rod can be turned away from the rear of the bracket. The cloth rod should be carried out in order when it is extended. It is strictly prohibited to use a cloth rod to lift or drag objects.

Nine. When the cloth rod is all out and fixed, the body is strictly prohibited. When the operation needs to be moved, the upper part of the cloth bar should be folded and fixed, and the moving speed is not more than 10km/h. The boom may use more than the required diameter pipe, connected with hose should be anti drop safety belt.

Ten, all kinds of instruments and indicator lights should be monitored at any time. It is found that abnormal adjustment or treatment should be made in time. If the pipeline is blocked, should make the concrete pump pump or anti return hopper, should remove the pipe blockage removing when necessary.

Eleven, pumping work should be continuous operation, when the suspension must be suspended 5~10 minutes (winter 3~5) pump to be delivered once. If the pump is stopped for a long time, the pump should be counter pump one or two times, and then pump feed. When pumping, a certain amount of concrete should be kept in the hopper, so it must not be sucked out. Eighteen, the two sides of the piston running to the cleaning room, and coated with lubricating oil.

Twelve, all parts of the control switch, the control handle, the handwheel, the control rod, the cock and so on should be reset. The hydraulic system is unloaded.

Thirteen, the two sides of the piston running to the cleaning room, and coated with lubricating oil.

Fourteen, should keep the water in the water tank and find that the water is cloudy and more sand should be checked and treated in time.

Fifteen, the bolts of the pump equipment should be fastened, the pipe joint should be tightened and sealed, and the protective device should be complete and reliable.

Sixteen, all parts of the control start, high speed handle, handwheel, control rod, cock and so on should be in the correct position. The hydraulic system should be free from leakage.

Seventeen, when the pump system is under pressure, no transport pipe and hydraulic pipe should be opened. The safety valve of the hydraulic system shall not be adjusted arbitrarily, and the accumulator can only be filled with nitrogen.

Eighteen. After the operation of the concrete pump, all the concrete in the hopper and the pipe must be exported, and then the concrete pump, the hopper and the pipe must be cleaned. Compressed air flushing pipeline, pipeline outlet not stand in front 10M, foam rubber and sand particles and application of metal basket collection out of.

Nineteen. It is strictly forbidden to use compressed air to flush the piping of the material rod. The folding and shrinkage of the cloth rod should be carried out in order.

Only by fully learning the performance and taboos of the equipment can the work be carried out safely and effectively.