The hydraulic motor is a machine that converts the hydraulic pressure energy into the mechanical energy of the mechanical equipment. It outputs torque and transmission ratio, and is the electronic device for the implementation of the hydraulic transmission system software. The basic concept of motor and pump is crossed, but there are some structural differences due to different application scope: the motor requires positive and reverse rotation, and its structure is symmetric; The pump is convenient to ensure its self-priming characteristics, and some protective measures are selected in the structure.
The classification of hydraulic motor motors in Ningbo: ns>500r/min is high speed hydraulic motor: gear motor, vane motor, radial piston pump motor; Ns ＜ 500r/min is low speed gear Marine hydraulic motor : Variable plunger pump motor (single acting engine crankshaft type variable plunger pump motor, multi acting internal trend diagram variable plunger pump motor)
Cycloidal hydraulic motor brake The establishment of air displacement, whether it is a closed system software or an open system software, whether it is a qualitative study of hydraulic motors or variable hydraulic motors, the selection of air displacement of hydraulic motors is generally based on the very large load torque when working in a balanced way, or the operating torque when working in extreme conditions. Whether it is closed system software or open system software, whether it is a variable plunger pump or a variable plunger pump, the very large displacement of the pump is based on the diesel engine as the rated voltage reduction ratio, and the hydraulic motor's displacement is at the highest safe driving speed.
Why use variables Connecting rod free radial piston motor Although the closed system software tries to apply the qualitative research hydraulic motor with small model, low cost and high efficiency Hydraulic transmission The quality strategic decision of the system software of the system software, in some cases, the output reduction ratio obtained by adjusting the input end (diesel engine+variable plunger pump) is limited by factors such as high efficiency and cost. Therefore, everyone in some industrial equipment tries to take the output end into consideration and carry out adjustment in addition. Generally, the output torque of system software is sufficient, and the output terminal is adjusted in favor of the range of output reduction ratio in high expansion efficiency.
What are the adjustment methods of the output end and the key adjustment methods of the characteristic output end are the methods of changing the exhaust volume of the hydraulic motor, changing the reduction ratio of the rear industrial equipment transmission, and adjusting the total number of hydraulic motors on the network. The following are discussed respectively. The mechanical equipment of the control board of the static four column hydraulic machine is used for the diesel engine. The speed regulation ratio of the diesel engine can be about 2~4 (for example, the reduction ratio is from 800 to 3000), and the professional skill of pitch change around the center point of the circle is only 1.15~1.3 for high-power work. Therefore, the ratio of variable pitch of diesel engine can be used to damage the key element of the coverage area of the reduction ratio of walking industrial equipment. Variable plunger pump+qualitative research of hydraulic motor, the displacement of variable plunger pump changes from about 25~100, after matching with diesel engine, the proportion of total speed regulation is about 8~16, and the proportion of total pitch is about 4~6.
