Abstract: A pressure-compensation controlled hydraulic pump, comprising an electric proportional pressure compensator, a hydraulic pump, a hydraulic control reversing valve and a servo cylinder; the electric proportional pressure compensator can be electrically connected to a controller, a first hydraulic control port of the hydraulic control reversing valve is connected to an internal oil drain path, and is connected to an internal output oil path by means of a hydraulic control oil inlet path provided with a first throttle valve, a second hydraulic control port is connected to the internal output oil path, and the pressure difference between an opening pressure of the electric proportional pressure compensator and an oil outlet pressure of the hydraulic pump can drive the hydraulic control reversing valve to perform reversing, and selectively enable a piston chamber of the servo cylinder to be in communication with the internal output oil path or the internal oil drain path.

Abstract: The present invention relates to construction machinery, and relates in particular to an operation device of a skid-steer loader, and a skid-steer loader. The operation device of a skid-steer loader can be disposed on a frame structure (3) of the skid-steer loader, and is located on a side of an operator cab (5) of the skid-steer loader. The operation device comprises a lift arm (16) comprising a clearance section (10). When the lift arm (16) is in a traveling position, the clearance section (10) is located in a region of the lift arm (16) adjacent to a side window of the operator cab. A top portion of the clearance section (10) is recessed toward a bottom portion of the frame structure (3) of the skid-steer loader. The operation device of the skid-steer loader can reduce the area on the side of the operator cab blocked by the lift arm, thereby increasing the peripheral vision of a driver.