Be used for accurate box sensor welded location frock clamp

The utility model discloses a be used for accurate box sensor welded location frock clamp sets up the observation window at the middle position of upper plate, set up heat dissipation clamping device on the lower surface of upper plate and around observing the window, the stand passes the guide rail sleeve and runs through upper plate, medium plate and hypoplastron, and the stand both ends are fixed respectively on upper plate and hypoplastron, on the stand of spring setting between vertical portion of medium plate and the vertical portion of hypoplastron. Compared with the prior art, adopt the spring in this patent scheme, press from both sides and heat dissipation clamping device cooperates jointly fast, accomplishes box sensor body tightly with the clamp of apron subassembly, can prevent effectively that it from taking place relative slippage, adopt heat dissipation clamping device, when utilizing the clamp force, can realize heat conduction in welding process, avoid the harm of welding energy to the box sensor, set up direct observation window, make things convenient for the observation and the adjustment of the size of butt weld requirement.