3results about How to "Avoid spot welding" patented technology

This invention belongs to the field of steel structure building technology, and particularly relates to a connection structure for prefabricated steel structure beams and columns with ultra-large cross-sections. The structure includes: an upper connecting column with a lower supporting column at its bottom; both the upper connecting column and the lower supporting column are hollow square steel tubes; a positioning component fixedly disposed at one end inside the upper connecting column; a clamping component fixedly disposed at one end inside the lower supporting column, which cooperates with the positioning component to clamp the positioning component; and a beam-column connection component fixedly disposed at the outer end of the upper connecting column and / or the lower supporting column, with multiple crossbeams detachably connected to the beam-column connection component. This invention can improve the construction efficiency and assembly accuracy of steel structure beams and columns.

The utility model discloses a chimney outer cylinder large hole sealing structure which comprises an outer cylinder, an outer cylinder hole is formed in the side surface of the outer cylinder, a smoke side pipe is arranged in the outer cylinder hole, one end of the smoke side pipe is fixedly connected with an inner cylinder, the inner cylinder is located in the outer cylinder, and the side surface of the outer cylinder is fixedly connected with a plurality of fixing plates. A steel plate is fixedly connected to the side surface of the fixing plate, a nut is fixedly connected to the side surface, close to the outer cylinder, of the steel plate, a hole closing plate is arranged on the side surface, away from the outer cylinder, of the steel plate, a screw is arranged on the side surface of the hole closing plate, and the screw penetrates through the hole closing plate and is in threaded connection with the nut. On-site bolt connection of the chimney opening plate is achieved, on-site welding is avoided, the installation difficulty of bolts is reduced, the installation efficiency is improved, and time is saved.

The utility model discloses a lithium battery bonding wire board spot welding machine which comprises a workbench and a lithium battery, an installation plate is arranged on the upper surface of the workbench in a sliding mode, an installation side plate is fixedly installed on the side face of the installation plate, and fixing assemblies for fixing the lithium battery are arranged on the upper surface of the installation plate and the upper surface of the installation side plate. An electric welding machine is fixedly arranged on the upper surface of the workbench and located on the side face of the mounting side plate, a containing plate is slidably arranged on the upper surface of the workbench and located on the side face of the mounting plate, and a moving assembly driving the mounting plate and the containing plate to move is arranged on the side face of the workbench. The rotating plate is driven by the operating rod to rotate, so that the rotating plate is in contact with the outer cambered surface of the lithium battery, the lithium battery is fixed through the clamping plate and the rotating plate, the placing plate is connected with the mounting plate, and then the lithium battery is electrically welded through the electric welding head, so that a worker does not need to hold the lithium battery by hand for spot welding; and therefore, the spot welding efficiency is improved while workers are protected.