1、 Selection method
1. Selection method of transmission and slewing device
1) Selection of hydraulic system
A. HY series transmission system and HYH series Hydraulic slewing The device uses an effective HGM with zhuanli technology Low speed high torque hydraulic motor Push the single-stage or multi-stage planetary reducer, and then output torque in the form of various connecting shafts or external pinions.
B. When users need large power, single-stage planetary reduction drive can be adopted. When the power is small and the output speed is very low, two-stage or even multi-stage planetary reduction drive should be adopted.
C.HY Hydraulic transmission device The "Y" function shall be generally selected for the middle position function of the directional control valve of the hydraulic slewing device and HYH. That is, when the reversing valve is in the middle position, the motor inlets and outlets A and B shall be interconnected with the "T" port of the fuel tank. Thus, the balance valve with the function of overpressure protection can also play the role of overpressure protection while playing the role of braking, so as to reduce the inertia impact force of the machine in the braking link, It will be beneficial to increase the service life and work safety and reliability of transmission and rotary devices. In order to ensure that the transmission system can operate within a relatively low pressure range, it is generally necessary to install a two-way overpressure protection valve in the middle of A and B ports of the transmission system, so that it can adjust the working pressure of the transmission system at will. Users should adjust the overpressure protection valve according to the design points or the transmission system model or instructions to ensure the safety and reliability of the product performance supporting equipment, If this point is ignored, it will also cause serious damage to running parts. Therefore, it is recommended to install a pressure gauge in the hydraulic system, which can monitor whether the pressure setting of each valve is feasible.
2) Selection of models and specifications
There are many options for various basic models of this series of products. Only a part of the specifications and models listed in the model are actually the same type with the same specifications Hydraulic motor There are many kinds of displacement, and the planetary reducer with the same specification also has a variety of transmission ratios. If the two are properly matched, many kinds of total displacement can be obtained (that is, hydraulic motor displacement times transmission ratio)
3) Adoption of the model of the valve distributor
Refer to our HGM low-speed valve for specific data of the valve distributor High torque hydraulic motor model. The model of the valve distributor for each type of product listed in this model is only a recommended model. Users can select other more appropriate models according to their actual conditions, but they should pay attention to the flow supplied by the pump. The allowable flow of various types of valve distributors is mainly limited by the flow of the two-way balance valve imported by Sun Corporation of the United States, The flow specifications and models of Sun's valves are 0, 60, 0120, 0240 and 0480L/min, and the corresponding models of our distributors are D602, D1202, D2402 and D90+F4802 in turn. Under the condition of not exceeding 70% of the flow value, users can use smaller specifications and models as far as possible, which can reduce regional specifications and costs.
