Large concrete delivery equipment for high-rise concrete delivery work, high-speed, overpasses and other large concrete projects. By the pump and delivery tube. Press structure is divided into piston, squeeze, pressure diaphragm. Pump mounted on the vehicle chassis, and then boom equipped with retractable or inflection, it is composed of pump. Category: divided according to the structure and use of towed concrete pump, vehicle pumps and pump, divided according to the type of electric power and diesel-powered concrete pump concrete pump. Concrete pump Features 1, triple pump open system, hydraulic circuit without disturbing each other, the system is running. 2, with anti-pump function, plugging in favor and remove the fault, and a short period of downtime to be expected. 3, the use of advanced S tube distribution valve, which automatically compensate for wear gap, good sealing performance. 4, wear-resistant alloy glasses plate cutting ring and float, and long service life. 5, expected long-stroke cylinder, extending the life of the pot and the piston. 6, optimal design of the hopper for easy cleaning, better suction performance. 7, automatic centralized lubrication system to ensure the effective operation of the machine lubrication. 8, with remote control action, the operation more safe and convenient. 9, all the components used in all GB, interchangeability good. Concrete Pump second-generation transportation technology: fully hydraulic control commutation technology The first generation pumping technology: electronically controlled commutation technology, PLC control solenoid valve switches to achieve pumping, S tube allocated to pay to replace. Machine assembly is simple, low production costs, but the electrical control complexity, high failure rate and maintenance cost, easy to delay the progress of the project is the biggest drawbacks. The second generation pumping technology: concrete mixer and loader hydraulic reversing technology, relies entirely on the master cylinder, hydraulic cylinder distribution of small signal changes to achieve action commutation. 1, pumping, S pipe distribution without PLC electrical components involved in concrete, lower failure rate, control is more reliable product life greatly improved. 2, fully hydraulic pump control technology, there is no constant pressure pump control box is not PLC, no nitrogen gas tank, water tank at no proximity switch, simple structure, maintenance costs are significantly reduced. 1) concrete pump should be placed on a solid flat surface, lay down the legs, the body placed stable. Should be checked before 2) work, make sure electrical equipment and instrument, various parts of the switch button, the handles are in the correct position, the mechanical part of the fastening point solid, reliable, chain and belt tension to meet the requirements, transmission parts in normal operation. 3) concrete delivery pipe joints should be sealed tight, the card should be securely connected pipe. Not less than 10m front vertical pipe horizontal pipe with a check valve, non-vertical pipe directly connected to the concrete pump outlet. 4) pipe blockage, should evacuate personnel around. Should be taken to counter before removing the pipe cleaning method, remove the pressure pipeline. When removing the nozzle of people prohibited. 5) Do not remove the hopper grille net and other safety devices work. Can not climb and ride-pressure transmission pipeline, extending into the valve body can not handle the work, it is strictly prohibited disassemble pipeline pumping. 6) when cleaning pipes, the operator should leave the pipe outlet and elbow joints. When cleaning with compressed air, such as pipes, pipe within 10m at the exit can not be someone and equipment. 7) After operation, the hydraulic pressure relief system, the entire control switch back to the original position. Concrete pump operation (1) sand particle size, grade and Mix cement factory specification shall be required to meet the mechanical performance requirements of the pump. Parking brake and locking brake (2) pumping equipment shall be used simultaneously, tires should wedge, water supply and water tanks should be properly stocked with water, should be no debris in the hopper, the lubrication points should be lubricated properly. Ministries bolt (3) pumping equipment should be tightened, sealing pipe joints should be tightened, guards should be complete and reliable. (4) operated at the beginning of each part, types of concrete mixers for sale adjust the handles, hand wheels, levers, cocks, etc. should be in the correct position. Hydraulic system should normally be no leakage. (5) Prepare a good cleaning pipes, cleaning supplies and other related devices. Before the job, you must use the required preparation of cement mortar lubrication line. Non-essential personnel to leave the pipeline. (6) leg should be fully extended and supported the prison, not fixed may not start before the boom. After the boom elevated stand before rotation. When the order boom should extend. Do not use boom lift or drag objects. (7) When the boom is in the fully extended state, non-moving body. When a job needs to be moved, it should be fixed on the segment boom collapsed, moving no faster than 10km / h. Boom may not use more than a predetermined diameter pipe, tube should be attached to the wheel off prevention safety rope system. (8) should be ready to monitor a variety of instruments and indicators, we found not normal, timely adjustment or treatment. In case of duct blockage, the reverse operation of the concrete should return the hopper, when necessary, to exclude demolition tube blockage. (9) under pressure pumping system can not open any pipelines and hydraulic pipes. Valve hydraulic system must not be adjusted. Accumulator filled only ammonia. (10) job, it must be concrete and pipes inside the hopper full output, and then pumps, hoppers, pipe cleaning. When using compressed air flushing pipes, pipe within 10m exit end can not stand in front of people, and applications and other metal basket to collect out of foam rubber and sand grains. (11) Do not use compressed air to flush boom pipe. Fold contraction shall be the order boom. (12) each part of the operation switch, adjust the handles, hand wheels, control sweat, cocks, etc. should be reset. Hydraulic system unloading. Output capacity 1, concrete pump output Calculation The actual average output of concrete pumps, according to the maximum output of concrete pumps, piping conditions and operational efficiency, calculated as follows: Q1 = 0max * a * η Where the actual average output per Q1- a concrete pump (m / h); Qmax- maximum output of each concrete pumps (m / h); a-- pipe condition factor. Preferably 0.8~0.9; η- working efficiency. High quality engine hydraulic concrete mixer A concrete mixer truck to concrete pump intermittent feeding time, removable concrete output tube and fabric stop, etc., it is desirable 0.5~0.7. 2, each equipped with a stirring concrete pump required to calculate the number of truck When concrete pump continuous operation, each with concrete pump required number of units of concrete mixer truck can be calculated as follows: N = (Q1 / V) * (L / S + Tt) Where the number of units concrete mixer truck N- (Taiwan); The actual average output per Q1 a concrete pump (m / h); V- each concrete mixer truck capacity (m); S- concrete mixer truck average traffic speed (km / h); L a concrete mixer truck and from distance (km); Each Tt a concrete mixer truck total down time (h).

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