Torque spanner

Abstract

The invention provides a torque spanner, which comprises a hydraulic oil cylinder, a connecting head, a sleeve spanner body, a support frame and a plurality of rolling wheels, wherein the connecting head is connected and fixed with the sleeve spanner body and the hydraulic oil cylinder; the support frame is provided with three support arms; the three support arms are respectively connected with the hydraulic oil cylinder, the sleeve spanner body and the rolling wheels; the rolling wheels have different heights; each rolling wheel can be respectively installed and fixed with the support arms of the support frame through third pin shafts; the sleeve spanner body is provided with a plurality of pin shaft holes, and the pin shaft holes are respectively anastomotic with second pin shafts. Compared with a traditional spanner, the torque spanner has the advantages that one fulcrum is added, and the sleeve spanner body is more stable in a screw bolt screwing process; the position of the support frame is changed through converting the connection of the support arms with different pin shaft holes, and the installation requirement of more different-diameter screw bolts on a flange can be met; through replacing the rolling wheels with different diameters, the installation requirement of screw bolts arranged on flanges in different heights can be met.

Description

technical field [0001] The invention relates to a torque wrench, which can realize the pre-tightening of bolts on a flange, and belongs to the field of mechanical technology. Background technique [0002] Torque wrench, also known as torque wrench, torque wrench, torque adjustable wrench, is a kind of wrench, generally divided into two categories: electric torque wrench and manual torque wrench. [0003] The main feature of the torque wrench is that the torque can be set and the torque can be adjusted. [0004] Application of torque wrench: [0005] The torque wrench is used to fasten the bolts. High-strength bolts can be divided into torsional shear type and large hexagonal type. The national standard torsional shear type high-strength bolts are M16, M20, M22, and M24. Now there are also non-national standard M27 and M30. ; The national standard large hexagonal high-strength bolts are M16, M20, M22, M24, M27, M30 and so on. Generally, the fastening of high-strength bolts...

AI Technical Summary

Problems solved by technology

[0010] It can be seen that it is very necessary to install flanges at the joints of hardware components, and there are usually 3 to 5 bolt holes around the flanges. When in use, bolts need to be tightened, but traditional torque wrenches usually It can only be used on flat surfaces, not on uneven surfaces like flanges. As a result, when the flange is installed, the bolts on the flange can only be tightened by the most traditional manual wrench, and the tightening force is fully dependent on the operator. It is determined by feeling, and the proper tightening force of the bolts cannot be ensured. During the use of the flange, the safety cannot be guaranteed, and it is easy to be loosened by vibration. It needs irregular maintenance, which has buried a lot of trouble for large-scale equipment. Hidden danger

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