The friends who had repaired the car must have used jacks, especially the small hulls of the hydraulic jacks were able to hold up hundreds of times their own weight. There is also such a “Hercules†in the dump truck area. It can be seen whether it is a small agricultural dump truck or a mining dump truck weighing hundreds of tons. And only need to touch the button lightly, heavy objects can also be easily lifted up, as if there is always endless force, it is the hydraulic lifting mechanism. For dump trucks, the importance of the lifting mechanism is the same as that of the saddle in the hanging and transport. With it, it can greatly improve the transport efficiency of the vehicle. Some people may wonder why the tiny hydraulic lifting mechanism has such awesome power. Where is its secret? After we last talked about the suspension system of the dump truck. Today, the China Truck Network reporter will tell you about the hydraulic lift of the dump truck. Small size, high energy, hydraulic lift, three points As we all know, due to the incompressible nature of liquids, they are often used in various hydraulic transmission systems. For hydraulic lifts used in dump trucks, they usually consist of five parts, namely cylinders. And cylinder heads, pistons and piston rods, seals, buffers, and exhaust. And its working principle is also very simple, basically equivalent to an enlarged version of the jack. Hydraulic lifter uses hydraulic pump to make hydraulic oil enter a cylinder through a single valve. At this time, the hydraulic oil entering the cylinder cannot be backed up because of the single valve, forcing the cylinder rod upward, and then continuing to make the hydraulic oil continuously enter the hydraulic cylinder. , so it keeps rising. When it is going down, it will open the hydraulic valve to make the hydraulic oil return to the tank. Although the principles of the hydraulic lifter are the same, hydraulic lifters with different structures have been developed. There are mainly three kinds of domestic dump trucks, namely the mid-mounted dual-cylinder lifting mechanism and the double-sided roll-over lifting mechanism. And the top lift structure. The central double-cylinder lifter is equipped with a multi-stage hydraulic cylinder (generally grades 3 to 4) on both sides of the front axle of the second axle of the vehicle. The fulcrum on the hydraulic cylinder acts directly on the chassis of the chassis. However, the mid-level parallel bar lifter will exert great pressure on the chassis and the entire lifting system during work, and the stability of lifting is also relatively poor. Then there is the double-side rollover hydraulic lifter. Unlike the mid-mounted double-cylinder lifter, the two cylinders of the double-sided roll-over hydraulic lifter are vertically arranged at the chassis of the vehicle body. The stroke of the cylinder can be greatly reduced, and double sided roll lift can also be achieved, but it also has certain defects, that is, it is prone to rollover accidents when lifting. Hyva hydraulic cylinders are widely used for long life and high load The last is the top lift mechanism. Because of its simple structure and good stability, it is also a kind of lifting method commonly used in domestic dump trucks. We use Haiwo's front-end fuel tank as an example. At present, domestic brands such as FAW Jiefang , CNHTC , SAIC Hongyan and other dump trucks adopt Haiwo oil cylinders. It can be said that the models used are very extensive. Hyva hydraulic cylinders use multi-section cylinders and are installed at the front end of the carriage. Compared to the cylinders in the mid-mounted lifting mechanism, the required lifting force is smaller. If the load is 40 tons, the front-top multi-section cylinder needs only about 20 tons of force to lift, while the mid-mounted lifting mechanism cylinder needs more than 60 tons of force to lift it. Because the required lifting force is small, the pressure requirements for oil pumps, valves, pipelines, etc. are also lower. At the same time, the forces acting on the cylinder support shafts, carriages, and frames are also small, so that the entire lifting system and mechanism can be The service life can be extended. And this is the biggest advantage of the hydraulic oil cylinders in Haiwo. In fact, whether it is for mining dump trucks or traditional city dregs, the importance of hydraulic lifting mechanism is self-evident. Especially now that the automotive industry has developed for more than 100 years, the change in the power system of dump trucks has also shifted from fossil fuels, such as traditional diesel and natural gas, to pure electric vehicles. However, the only lifting mechanism used is still hydraulic transmission. All this is attributed to The structure of the hydraulic cylinder is simple, the performance is reliable, and the operation is also very respectable. At the same time, this is also the main reason why hydraulic cylinders shine in the dump truck. Pj Multi Wedge Belt,Multi-Groove Belt,Multi-Rib Belt,Chip Baseband Transmission Belt Jiangsu Bailite Transmission Technology Co., Ltd , https://www.bailitebelt.com
Dump Truck Lifting Mechanism 
Dump Truck Hydraulic Lift Structure 
Central double cylinder lift 
Double sided hydraulic lift 
Hyva hydraulic cylinder lifting system 
FAW Jiefang Dump Truck adopts Haiwo Hydraulic Cylinder Lifting System