Torque wrench 2 for connecting graphite electrodes

In actual use, first open the two semi-circular arc frames 2, and after the cylindrical graphite electrode is sleeved between the two semi-circular arc frames 2, the two wrench units are buckled together through the connecting piece 4. At this time, the two semi-circular arc frames 2 form an annular electrode ring 6, and the electrode ring 6 firmly clamps the graphite electrode. Next, the operator can rotate the wrench unit by holding the handle 3, so as to rotate the connecting disk at the end of the graphite electrode together, thereby realizing one-time installation, continuous circulation and one-time completion of the graphite electrode installation process. Since the corresponding handles 3 are arranged 180° symmetrically, that is, no matter what the angle state of the electrode ring 6 is, the operator can easily find a nearby handle 3, so as to continue to rotate the above-mentioned electrode ring 6. This improvement overcomes the technical defect of the traditional equipment that can only rotate half a circle.
Of course, in order to further realize convenient rotation, such a scheme can be selected: each wrench unit has two handles 3, and the handles 3 are arranged near the connecting piece 4. As shown in FIG1 , such an improved structure has the following advantages: first, it can be conveniently started to rotate after the connection member 4 is buckled, that is, after the connection member 4 is buckled, the operator can find a convenient handle 3 near the connection member 4 to perform the rotation operation; second, the number of handles 3 arranged on the periphery of the semicircular arc surface frame 2 is increased, which can also bring convenience during the rotation operation.
Since the surface lubricity of the graphite electrode is good and the arc surface fixing frame is smooth, in order to prevent the wrench from sliding during rotation and locking and ensure the safety of operation, it is possible to choose to fix an anti-slip block 5 on the inner wall surface of the two semicircular arc surface frames 2. As shown in FIG1 , the anti-slip block 5 directly contacts the graphite electrode, thereby effectively preventing sliding during rotation. Of course, further, it is possible to choose to set an anti-slip tooth groove on the anti-slip block 5, and the anti-slip tooth grooves of two adjacent anti-slip blocks 5 are in opposite directions. Such an improved anti-slip effect is better.
In addition, in order to ensure the rigidity of the semicircular arc surface frame 2 during rotation, a reinforcing ring 1 can be provided on the outer wall surface of the semicircular arc surface frame 2. As shown in FIG1 , the reinforcing ring 1 greatly increases the rigidity of the semicircular frame 2, thereby improving the ability of the semicircular frame 2 to resist deformation.
Based on practical experience, in order to simplify the relevant structure while ensuring the buckling effect of the two semicircular frames 2, the connecting member 4 can be designed as a connecting bolt. This not only makes it easy to buckle and open the two semicircular frames 2, but also greatly reduces the cost of production.