3results about How to "Reliable tension" patented technology

The invention discloses coating and shaping equipment for a high-breathability PTFE (Polytetrafluoroethylene) waterproof breathable film, which comprises a rack, a base cloth supply device arranged on the rack, a coating device arranged on the rack and used for coating a liquid raw material on the base cloth, a first coagulating basin arranged on the rack and below the coating device, and a cloth in-pool guide device arranged on the rack and at the outlet of the coating device, the cloth in-pool guiding device comprises a plurality of height-adjustable material guiding frames arranged on the machine frame side by side and a water inlet roller guiding mechanism, input material guiding rollers are arranged on the material guiding frames, a plurality of cloth tensioning transition rollers are arranged in the first coagulating tank in the feeding direction, and the connecting line of all the cloth tensioning transition rollers is in a downwards-protruding arc shape. A water outlet guide roller is arranged at one end, far away from the water inlet roller, of the first coagulating tank; a plurality of heaters and a plurality of temperature sensors are arranged in the first coagulating tank; a tension control device for controlling the tension force of the cloth is arranged on the rack, and a traction pressing vehicle for sending out the cloth is arranged on the discharging side of the tension control device on the rack.

The present application discloses a strain tower, comprising a tower body, and at least one composite crossarm assembly. The at least one composite crossarm assembly is fixedly connected to the tower body. The composite crossarm assembly comprises: at least one composite post insulator and a link fitting. The link fitting comprises an end link fitting and a wire connecting portion. The composite post insulator is fixedly connected to the end link fitting. The wire connecting portion comprises wire hanging plates and a jumper connecting piece. By providing a jumper connecting piece on the end link fitting, a jumper can be directly hung at the end of the composite crossarm, thereby omitting a jumper insulator, simplifying the composite crossarm structure, reducing the structural weight of the end of the composite crossarm, and improving the economic efficiency.

This application discloses a tensioning device for flexible scenery, comprising: a movable base; a mounting mechanism disposed on the movable base for mounting the main rattan of a rattan bridge; and a telescopic mechanism having a telescopic rod connected to the movable base for moving the movable base to tension the main rattan. When the tensioning device is in operation, the telescopic rod first controls the movable base to move closer to the rattan bridge. Then, the operator mounts the main rattan onto the mounting mechanism. Because the rattan bridge is not tensioned at this time, i.e., the main rattan is not tensioned, it is relatively easy to mount it onto the mounting mechanism. Then, the telescopic rod operates, causing the movable base to move away from the rattan bridge, at which point the main rattan can be quickly and reliably tensioned.