Loading valve PP179
PURPOSE AND SCOPE
Unloading valve combines the functional possibilities of a hydraulic lock and a brake valve. The hydraulic unit is designed to provide speed stabilization of the hydraulic motor, fixation of hydromotor under the action of a load at minimum leakage and reduction of energy losses in the hydraulic drive of a mobile working machine. The unloading valve is recommended to install in hydraulic control systems of forklifts, excavators, manipulators and other hydrofoiled mobile working machines. The scope of such mobile working machines covers agricultural, construction, mining industry.
Unloading valves can be installed in the hydraulic control system of domestic and overseas mobile working machines.
THE DEVELOPMENT READINESS STATUS
A basic scheme has been developed. The experimental sample was made, the expected characteristics were confirmed and design documentation was worked out.
MAIN CHARACTERISTICS OF THE DEVELOPMENT
The developed gidroaparat is designed for maximum pressure at 20 MPa and nominal flow rate working fluid at 60 l / min. Unloading valve provides a degree of tightness of the workers Hydroline at a level of 3 - 5 drops per minute.
For hydraulic drive control system with unloading valve error stabilization the speed is 6% . Management pressure of the unloading valve is 1. 5 - 3 MPa
INTELLECTUAL PROPERTY STATUS
The patent of Ukraine for the utility model has been obtained