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I. Introduction to Dump Trucks: Dump trucks are vehicles that unload their cargo by hydraulic or mechanical lift. Also known as dump truck. It consists of a car chassis, a hydraulic lifting mechanism, a cargo box and a power take-off device. In civil engineering, dump trucks often work in conjunction with construction machines such as excavators, loaders, and belt conveyors to form loading, transporting, and unloading production lines for the loading and unloading of earthwork, sand, and bulk materials.
II. Sludge Dump Truck Description: The sludge dump truck is used for loading, unloading, and transportation of urban sludge to remove and transport various types of bulk materials. The rated load quality is 5 tons. Its dirt barrel lifting dumping machine can automatically put dirt and other materials into the cargo bed. After the car body is tilted and unloaded, hydraulic control is performed. The rear door of the car body can be automatically opened and locked. After the dumping mechanism of the car and the cargo bed The cover can make the sludge dump smoothly and effectively prevent the pollution to the urban environment and reduce the loss of materials on the way. The hydraulic system is easy to operate and flexible.
III. Working principle of sludge dump truck : The structure of the sludge dump truck's engine, chassis and cab is the same as that of general trucks. The hydraulic tilting mechanism of the compartment consists of a fuel tank, a hydraulic pump, a distribution valve, a lift cylinder, a control valve, and a tubing. The engine drives the hydraulic pump through gearboxes, power take-offs, and transmission shafts. High-pressure oil enters the hydraulic cylinder through the distribution valve and tubing, and pushes the piston rod to tilt the carriage and open the back door of the carriage. The control system controls the piston rod movement to open the rear door of the car through the hydraulic system. In operating the hydraulic system, the car can be stopped at any desired tilt position so that the sludge can be better unloaded. The car is reset by its own gravity and hydraulic control. . Its vehicle design is reasonable, the entire operation process is safe and convenient.
IV. Sludge Dump Truck Operation Procedures: 1. Do not suddenly push the lift handle to the “down position†in the middle of a full load lift.
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If this operation fails, the car suddenly rushes down, which will bring a lot of impact to the frame and even accidents. Therefore, you should try to avoid the above operation, if you have special circumstances need to be careful, slow down the landing as much as possible, you must not suddenly stop the car to the end. 2, can not use the car to pull - hard brake unloading. Because the inertia of the vehicle is very high (usually 5 to 20 times of the rated lifting force), it is very easy to cause permanent deformation of the frame, car and frame welding, oil pump damage, damage to the hydraulic cylinder, and damage to the hydraulic cylinder. The service life of the vehicle is reduced, and in serious cases, a rollover accident may also occur. Therefore, general dump trucks are prohibited from driving when lifted. 3. After the dump truck has unloaded the cargo, it must be removed from the power taker before it is feasible. If this operation error occurs, when the dump truck is running, since the power take-off is in the “engaged†position, the lift pump will run for a long time without load under the “small cycle†state. As a result, the temperature of the hydraulic oil rises rapidly, which can easily cause damage to the oil seal of the oil pump and even cause the phenomenon of “burning†of the oil pump. What is more serious is that the operation of the oil pump means that the hydraulic system has a power source, and the carriage automatically rises during the driving process. Accident. 4. The power take-off can't be in the "ON" position while driving. If in the "on" state (red light), the oil pump will continue to rotate, the hydraulic system will have a power source, so that due to the misoperation on the pneumatic control valve caused by the automatic lifting of the compartment; Even if the valve is in the "down" position, the oil will enter the oil pump. This will make the oil pump bad. 5. When the power take-off is connected, the clutch should be depressed first, the power take off switch should be turned on, and then the clutch should be loosened slowly so that the power takeoff gear and the transmission gear can be meshed normally.