If the hydraulic system of the small crane is hot, first find out the reason for the heating of the hydraulic system. below Huai'an Crane Rental Company Analyze why for you!

1. The oil tank volume is too small, the heat dissipation area is not enough, the oil cooling device is not installed, or although there is a cooling device, its capacity is too small.

2. For the constant displacement pump oil supply system with oil pump capacity selected according to fast forward speed, most of the excess flow will overflow from the overflow valve under high pressure and generate heat during operation.

3. The unloading circuit in the system fails or the oil pump cannot be unloaded when it stops working because there is no unloading circuit set. All flow of the pump overflows under high pressure, causing overflow loss and heating, resulting in oil heating.

4. The system pipeline is too thin and too long, with too much bending, and large local pressure loss and pressure loss along the way.

5. The element precision is not enough and the assembly quality is poor, and the mechanical friction loss between relative movements is large.

6. The fitting clearance of the fitting parts is too small, or the clearance is too large after use, resulting in large internal and external leakage, resulting in large volume loss. For example, the volume efficiency of the pump is reduced and the heat is fast.

7. The working pressure of the hydraulic system is adjusted higher than the actual demand. Sometimes the pressure has to be increased to work because the seal is too tight, or the seal is damaged and the leakage increases.

8. The high temperature of climate and operating environment causes the oil temperature to rise.

9. The viscosity of the selected oil is improper. The viscosity is large and the viscosity resistance is large. If the viscosity is too small, the leakage will increase. Both conditions can cause oil heating.

The heating and high temperature of the oil in the hydraulic system of the small crane will cause problems such as inflexible operation, discontinuous operation, weak work and low working pressure.

The above is Huai'an Crane Leasing Company I hope the relevant introduction I have brought to you will be helpful. For more information, please pay attention to the official website of Xinyu Large Construction Machinery Leasing!