The gear pump and bypass hydraulic controlling system analysis

controlled double pump and bypass hydraulic system introduction: there are two main sources of power, the hydraulic system for the pneumatic valve control in distribution systems. For work pump and the gear pump, steering and hydraulic pressure system to add a work control pneumatic valve, controlled shunt pneumatic valve to a double pump electromagnetic control pneumatic valve such as the appended drawings of electromagnet interface connected to the machine level 3 alarm system. This is a P - pneumatic valve PF normally open, PF with T oil mouth always breath valve, pressure PF the right end and the main pneumatic valve core are interlinked, if the steering system does not work, turn pressure oil from the priority of pneumatic valve controlled double pump and shunt PF pneumatic valve P mouth into the work of the hydraulic system for double pump confluence, advances the work efficiency of the machine, when the machine to dig up or overload, working hydraulic system pressure beyond the Mpa and through the function at the right end of the pneumatic valve throttle mouth, if the force F is greater than the spring setting, controllable double pump and bypass pneumatic valve core is left, P oil mouth and T oil are interlinked, steering system for low pressure overflow, prevent steering system at high pressure relief, reduce the power loss and hydraulic oil temperature. If the machine for a long time in the high-pressure overflow condition, system oil temperature rise high into the system setting, the oil temperature sensor signal to the controller, level 3 alarm system, the controller controlled gear oil pump for E send electrical signals and shunt electric, pneumatic valve electromagnet drive pneumatic valve core moves to the right, P oil mouth and T mouth are interlinked, steering system for low pressure relief. Gear pump flow differences, prevent system oil temperature is high, system damage caused by the
the dual pump confluence. When the machine is in a state of dug up, gear pump pressure oil into the working system. Working pressure rise sharply, pressure exceeds rating, hydraulic system at high pressure relief, energy greatly stretched out, and make the hydraulic system oil temperature rise sharply, fatal damage to the system. Another to control the gear oil pump, there are three main hydraulic power source in the system. Improve the shoe when the loader arm lifting state, pneumatic valve switch shift to the left, the double pump confluence, the work device of the flow of traffic, in order to progress bucket lifting speed; If the machine in the mining, loading condition, the control oil pressure into the mouth K, pneumatic valve switch to the right, the work device of the flow of oil is reduced, the branch switch pump flow of hydraulic oil flow back to the fuel tank, hydraulic load, reduce the power department is assigned to the drive wheels, improved the traction. This system is able to save energy, but in the world outside of movable arm lifting state is difficult to obtain high work efficiency, and under the mining condition is still under high-pressure overflow, cause fatal damage to the machine. And the system is complex, interest rate increase is larger, economic benefit is poor.
pump hydraulic system control and shunt
lower interest rates, in order to save energy. Reduce high oil temperature rise of the damage to the hydraulic system, make the whole machine is in a highly efficient and reliable running state, and to prevent when turning or work pressure rating, the whole system under the high pressure relief, energy greatly stretched out, and the hydraulic system oil temperature rise sharply, fatal damage to the system, invented the hydraulic system, the system low interest, high reliability, greatly the progress of the engine power utilization, and with high-pressure automatic overflow, high temperature automatic block confluence, maintenance system, at the same time, still can obtain larger dug up. Improved the high pressure large flow of large tonnage loader hydraulic system function, make the power efficiency has great progress. The function of the whole machine has greatly improved, and and so the intelligent control is possible.