Working principle of hydraulic torque wrench

source:Industry News release time:2021-11-08 Article author:Rosit Popular:Air band saw

　　 AW21-1200 Pneumatic Impact Wrench

　　Hydraulic torque wrenches are powered by hydraulic pump stations and provide high torque output. They are used for the installation and disassembly of bolts and nuts. Professional bolt-locking hydraulic tools are often used to lock and dismantle bolts larger than one inch. The maximum torque output of the hydraulic torque wrench can reach 160,000Nm, which not only provides work efficiency, reduces the labor intensity of on-site operators, but also greatly improves the quality of installation and is also conducive to on-site safety management!

　　Hydraulic torque wrenches have a wide range of applications. In wind power, thermal power, hydropower, nuclear power, shipbuilding, petrochemical, metallurgy, steel structure construction, mining, cement and other industries, the hydraulic The torque wrench is a very important hydraulic tool for the installation and removal of large-size bolts!

　　The hydraulic torque wrench is not only easy to use and light, but also provides very accurate torque values, with a torque repeatability of about 3%! According to relevant statistics, 50% of equipment operating failures are caused by bolt problems, and at the same time because of bolt tightening and disassembly. The torque is relatively strict in most cases. If you use an ordinary wrench, it is difficult to achieve the required accuracy! For large torque, a hydraulic torque wrench is a more ideal choice.

　　The working head of a hydraulic torque wrench is mainly composed of three parts, the frame, 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 constitute the movement pair, the distance from the center of the oil cylinder to the center of the transmission part is the hydraulic wrench amplification arm, and the oil cylinder handles Multiplied by the force arm is the theoretical output torque of the hydraulic torque wrench. Due to the friction resistance, the actual output torque of the hydraulic torque wrench is smaller than the theoretical output torque!

　　There are two series of hydraulic torque wrenches: driven hydraulic torque wrenches and hollow hydraulic wrenches! Driven hydraulic torque wrenches are used with standard sockets. They are universal hydraulic wrenches and have a wide range of applications! Hollow hydraulic torque wrenches are thinner and especially suitable In a place where the space is relatively narrow!

　　Hydraulic torque wrenches are widely used in electric power (nuclear power, wind power, hydropower, thermal power), shipbuilding, metallurgy, transportation, cement, construction, aviation and other fields.

　　Because hydraulic torque wrenches are often used in small spaces and locations that are very inconvenient for transportation during construction, the volume and weight of hydraulic torque wrenches are the most important indicators! In order to reduce the size of components, high-strength alloy materials and heat treatment are used Is the common method!