Dumper chassis and top loading details analysis
Dump trucks are vehicles that are unloaded by hydraulic or mechanical lift and are also called dump trucks. It consists of a car chassis, a hydraulic lifting mechanism, a cargo box and a power take-off device. As the loading compartment can automatically tip and discharge at a certain angle, the time and labor of the dumping can be greatly saved, the transportation cycle can be shortened, the production efficiency can be improved, and the transportation cost can be reduced. This is a common transportation vehicle.
Different transportation conditions will have different requirements for dump trucks. How do you choose the right dump truck according to your own conditions? This article will give you a detailed analysis of the chassis and tops.
â— Chassis
When choosing the chassis, it is generally considered based on economic benefits, such as: chassis price, loading quality, overload capacity, fuel consumption per 100 km, fuel consumption per 100 km. In addition, the user must also consider the following parameters of the chassis:
(1) The height of the chassis frame above the ground. General 6x4 chassis frame above the ground from the height of 1050 ~ 1200. The higher the value is, the higher the vehicle's center of gravity is and the easier it is to cause a rollover. The factors affecting this value are mainly the diameter of the tire, the arrangement of the suspension and the height of the main frame section;
(2) The rear suspension of the chassis. The excessive value of this value will affect the stability of the lifting of the dump truck, resulting in lifting accidents. This value is generally between 500-1100 (except rollover dump trucks);
(3) The vehicle is well-matched and reliable to use.
â— Tops
At present, dump truck manufacturers are mixed, and choosing a dump truck is not as important as choosing a manufacturer. In addition to looking at products, we must also understand the manufacturer's equipment capabilities, design of dump trucks, the maturity of process equipment, after-sales service commitments, and whether accessories can be purchased.
(1) Cars
The choice of compartments is mainly from the use of materials, the choice of 16Mn material is better than ordinary A3 material strength, but the cost is also high. Appropriately increase the local thickness according to the different cargoes to meet the requirements. See the table below for common transport cargo thicknesses.
In order to reduce the weight of the car, some cars can be made of aluminum alloy or high-strength materials to reduce their own weight and increase their load.
(2) Selection of Lifting Organizations
1. The general purpose dump truck is recommended to choose the tripod amplification mechanism. This structure has a history of 40 years in China, and the technology is relatively mature. It is suitable for dump trucks with a length of 4-6 meters.
2. Reasonable arrangement, the stress of each part will not exceed the bearing capacity of the parts, the system oil pressure is small, in order to guarantee the service life of each seal;
3, choose a high quality hydraulic cylinder. The hydraulic cylinder is the power component for lifting the dump truck. Try to choose products with quality assurance.
4. Dump trucks with a length of more than 6 meters generally use a multi-stage cylinder top lift structure;
5. Two-cylinder lifting structure is generally used for dump trucks with a wheelbase of 3 to 4 meters.
(3) Several issues to pay attention to when uploading and selecting
1. Buckets must be used to transport large items;
2. When the length of the carriage is more than 5.4 meters, pay special attention to the height of the center of gravity of the carriage and the stability of the lift;
3, can not use the coal transport vehicles to transport earth and stone. Generally, the height of cars for special coal transportation vehicles is between 1.6 and 1.9 meters. How long these types of vehicles are designed is based on lightweight goods (specific gravity less than 1.2), which may cause poor lifting stability when transporting earth and stone. Serious Can cause lifting accidents;
4. Do not use the bucket car to transport mud, clay, and other viscous goods. The structure of the bucket car makes the sticky goods more difficult to remove.
5, when transporting iron ore powder dump truck selection with the manufacturer's statement, the best choice for iron ore powder selection of transport vehicles;
6. When used for paving asphalt transportation, the lifting mechanism requires a slow descending device.
â— Summary:
The choice of dump truck is still to choose the right type according to the specific purpose. Because the dump trucks are in a relatively difficult working environment, it is particularly important to choose a brand with excellent quality and reputation. A heavy duty truck with high attendance is a good tool for earning money.
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