Mixer hydraulic pump pressure regulating device

We all know that the hydraulic device of a concrete mixer is a key component, but how is the hydraulic oil injected? How can such a large pressure be produced? There are still many people who are not very clear. Today we are concrete mixers. The experts of the factory answer some questions for you:

The automatic injection system of the concrete pump hydraulic pump must establish the oil pressure adjustment device, on the one hand because of the oil pump, the oil pump is changed. Automatic transmission oil pump drive engine direct theoretical oil pump, the speed of the oil pump is proportional to the engine in order to ensure normal operation, the engine of the automatic transmission is a condition of the minimum speed laziness, oil supply system) oil.

Just as the automatic transmission pressure should be able to meet their needs in every part of the automatic transmission, the oil pressure is very low, clutches and brakes slip, affect the spread of power transmission; but if only consider the idle process, due to the engine in the idle speed The speed (about 750 rpm) and the maximum speed (around 6,000 rpm) are too large, so the oil pump will have a big impact when the engine is running at high speeds. Hydraulic pressure and hydraulic pressure are too high, increasing the load on the engine and causing changes in the block. Our cement mixer on the other hand is due to part of the hydraulic requirements of the automatic transmission is not the same. Therefore, the requirements of the supply system.

The hydraulic pressure and flow rate of various parts provided by the hydraulic system of the concrete mixer truck shall be adjustable.

The hydraulic oil supply system adjustment device inside the hydraulic pump is a main line pressure regulator (also called a regulating valve), a secondary pressure regulating valve (also called a secondary regulating valve), an inspection and a safety valve, and the like. The basic composition of the pressure regulator -a regulator valve 2-4-3-the safety valve pump 5-check the second regulator valve oil pressure regulator valve main line, said a regulator regulator valve, its role is based on speed and carbureted oil Throttle valve opening change, automatic adjustment of the hydraulic system hydraulic pressure to ensure the stability of the hydraulic system, so that the smooth operation of the signal valve. Generally by the oil pressure regulator valve core, body and spring and other components. The following is a simplified structure of the hydraulic regulator.