Hydraulic torque wrench is composed of working head, hydraulic pump and high-pressure oil pipe. Through the high-pressure oil pipe, the hydraulic pump transmits the power to the working head, and drives the working head to tighten or loosen the rotating nut. Hydraulic pumps can be powered by electricity or compressed air.
The working head of the hydraulic wrench is mainly composed of three parts, the frame (also called the shell), the oil cylinder and the transmission part. The output force of the oil cylinder, the piston rod of the oil cylinder and the transmission part form a motion pair. The distance from the center of the oil cylinder to the center of the transmission part is the amplified force arm of the hydraulic wrench. The output force of the oil cylinder is multiplied by the force arm, which is the theoretical output torque of the hydraulic wrench. The actual output torque is smaller than the theoretical output torque.
Hydraulic torque wrench (hydraulic torque wrench, referred to as hydraulic wrench) is a professional bolt tightening tool that is powered by hydraulic pressure and provides large torque output. It is used for bolt installation and removal. It is often used to tighten and loosen bolts larger than one inch. Thyssen Hydraulics tells you that the maximum output torque of the hydraulic torque wrench can reach 110,000Nm, which not only improves work efficiency and reduces labor intensity, but also greatly improves the installation quality and is also conducive to on-site safety management.
Hydraulic wrenches are widely used. Hydraulic wrench is a very important tool for the installation and disassembly of large-size bolts in the construction, maintenance, and rush repair of shipbuilding, petrochemical, construction, electric power, mining, metallurgy and other industries. Irreplaceable with other tools. Not only is it easy to use and lightweight, but the torque it provides is huge and accurate. Torque repeatability is about 3%. According to the relevant statistics of the factory, about 50% of the equipment failures are caused by bolt problems. At the same time, the number of major equipment accidents caused by bolt problems is also very alarming. Therefore, in the process of equipment installation, maintenance and gun repair, In most cases, the torque requirements for bolt fastening and disassembly are relatively strict, and it is difficult to meet the requirements by manual methods. Hydraulic wrench is an ideal choice for bolts to provide large torque.
Because hydraulic wrenches are often used in small spaces and inconvenient locations during construction, the volume and weight of the wrench are the most important indicators. In order to reduce the size of components, the use of high-strength alloy materials and heat treatment are common methods.