Hydraulic clamp structure principle

The crimping pliers are composed of an oil tank, a power mechanism, a reversing valve, a pressure relief valve, and an oil pump mechanism. The oil pump mechanism consists of an oil pump body, high and low pressure oil outlet holes, eccentric shafts, eccentric bearings, driven gears and a pair of high pressure The oil pump and a low-pressure oil pump are formed. The oil pump body is suspended on the oil tank cover. The high and low pressure oil outlet holes are opened on the oil pump body and connected with the pressure relief valve oil circuit. The eccentric shaft is arranged longitudinally, and the upper end is pivoted in the center of the oil pump body. , The lower end is fixed with an eccentric bearing, the driven gear is fixed on the top of the eccentric shaft, and is connected with the power mechanism. The high and low pressure oil pumps are suspended on the oil pump body, each with an actuator that touches the eccentric bearing, high and low pressure oil pumps The pump chambers are respectively communicated with the high and low pressure oil outlet holes.

The connection between the pumping mechanism and the power mechanism is a vertical connection, which can make full use of space and reduce the footprint, which is conducive to operation and transportation; the pumping form of high and low pressure oil pumps is changed to the actuation form of eccentric bearing, which has a structure The advantages of simplicity, fewer parts, and ease of assembly.