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Basic working principle of the cabin tilt pump
Time:2013-5-10         Views:159

Working manual of Cabin lift pump:the first phase(oil absorption stage):hydraulic cabin pump operating rod through the shaft and cam mechanism drives the manual plunger slide up. Then the volume becomes large between manual plunger pump and the cover.Due to the atmospheric pressure,it producs a negative pressure inside the tank. Hydraulic oil of the cabin tilt pump then go into the plunger cavity through the bottom of the plunger check valve. because of the dual role of negative pressure in the plunger cavity and one-way valve spring was shut down, it prevents the return of the hydraulic fluid in the tubing. Second phase (oil pressure stage), cabin tilt pump operating rod through the shaft and cam mechanism drives the manual plunger slide down,the volume formed between the manual plunger pump cover becomes smaller, piston compress the hydraulic oil and there generates pressure.Then the bottom of the one-way valve is closed due to the pressure of the fluid and the balls own gravity. At the same time,becuase of cavity fluid pressure increases, the role of the fluid force on the ball is greater than the spring force, the check valve opens. Due to the presence of the load of the oil outlet, it leads to the outlet pressure rises. The size of the cabin tilt pump outlet pressure is decided by the size of the load. Repeat the two stages above, there will be continuously high pressure fluid outflow. The hydraulic Cabin pump through different function valve can control the direction of high-pressure fluid.So it can achieve the rise and fall of the Cabin tilt cylinder. Engineer Mr Zhang of Yueqing Hualong Mechanical Accessories Factory pointed out: the principle is very simple, if you pay attention to the details, the production line and the quality of the product will be greatly improved.


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