특허품
Detailed Description
1) The typical relief valve is used at a fixed pressure. There is a need to change the pressure when using the device for particular operations. When changing the set pressure, you use a pressure gauge directly from the outside and there is the inconvenience of having to set the pressure while watching the pressure gauge. If you adjust the signal pressure from the outside or from the driver's seat at a constant value, the pressure signal is generated. The relief valve is a device designed to change the set pressure of the relief valve at a constant value in accordance with the signal pressure in order to solve this inconvenience.
2) The relief structure allows customers to provide the desired pressure which is unlimited while the relief valve structure used in the conventional option apparatus only controls the standard pressure, boost, and 2 point pressure with on / off function. The relief valve adding to the enhancements of 1-4 as described in the above description are expected to be applicable to most future excavators.
Detailed Description
1) Problems with connecting to the plumbing drain port caused by surrounding interference are removed.
2) The structure of the above brings an energy-saving effect by removing the cause of leakage by placing the seal
on the oil leak site.
3) We remove the cause of corrosion by installing the drain port separately.
4) When the discharged pressure oil from the pump waits at ROOM D, the pressure oil is not flowing toward
the "T" due to the SEAL.
5) After setting the initial pressure, the pump pressure is low at the same time the pilot pressure switches.