Hydraulic tongs are professional hydraulic tools specially used for crimping cables and terminals in power engineering. There are integral, split, electric, manual and so on. Hydraulic tongs are divided into separate/integral cable hydraulic tongs, mechanical cable wiring tongs, steel core cable hydraulic tongs, manual hydraulic tongs and electric hydraulic tongs.

The charging hydraulic clamp is a kind of hydraulic tools with the lightest design, which can be operated by one hand and applied to the crimping of distribution terminals. Lightweight and durable, the maintenance probability is the lowest among all hydraulic tools. When the set pressure is reached, it can automatically release the pressure. The head can rotate and is suitable for different workplaces. Mechanical hydraulic head ensures crimping quality. Among them, the rechargeable hydraulic pliers Guda hydraulic pliers are relatively good.

Structure principle of hydraulic tongs

The hydraulic tongs consist of an oil tank, a power mechanism, a reversing valve, a pressure reducing valve and a pumping mechanism. The pumping mechanism consists of an oil pump body, high and low pressure oil outlets, an eccentric shaft, an eccentric bearing, a driven gear, a pair of high and low pressure oil pumps and an oil pump. The oil pump body is hung on the oil tank cover. The high and low pressure oil outlets are arranged on the oil pump body and connected with the oil circuit of the pressure reducing valve. The eccentric shaft is longitudinally arranged, and the upper end is pivoted in the center of the oil pump body.

The driven gear is fixedly installed at the top of the eccentric shaft and connected with the power mechanism; The high-pressure oil pump and the low-pressure oil pump are hung on the oil pump body, and each of them has an actuating piece in contact with the eccentric bearing; Pump cavities of high-pressure and low-pressure oil pumps are respectively communicated with high-pressure and low-pressure oil outlets. The connection between the pumping mechanism and the power mechanism is vertical, which can make full use of space, reduce the occupied area and be beneficial to operation and transportation; Changing the pumping form of high and low pressure oil pump into the driving form of eccentric bearing has the advantages of simple structure, few parts and easy assembly.

Refer to Baidu Encyclopedia-Hydraulic Clamp for the above contents.