2 results about "Flanging" patented technology

The invention belongs to the technical field of plastic pipe plate connecting tools, methods and gas-gas heat exchangers, and discloses a tool for connecting and sealing a plastic pipe plate, a pipe plate connecting method and a gas-gas heat exchanger. The pipe plate connecting method is characterized in that a small hole is drilled, then the plate at the periphery of the bearing hole is flanged to the outer side by heating, after cooling, the hole is expanded and a plastic pipe is inserted into the bearing hole, and the plastic pipe and the plastic plate are hermetically connected together after cooling again; and the diameter of the bearing hole in the plastic plate is reduced due to thermal expansion and cold contraction at high temperature, the diameter of the plastic pipe is increaseddue to thermal expansion and cold contraction, so that the sealing performance is better. In addition, the axial length of the plastic pipe can be lengthened at high temperature, and the flanging isarranged on the periphery of the bearing hole, therefore, the joint of the plastic pipe and the plastic pipe is a smooth surface, the plastic pipe cannot be damaged for the expansion and contraction of the plastic pipe in the axial direction, and the plastic pipe cannot be scratched when the plastic pipe moves in the plastic plate.

The invention discloses an automotive pull type clutch bearing disk assembly. The automotive pull type clutch bearing disk assembly comprises a gland, a pressing plate, a diaphragm, a bearing disk, a driving strap rivet and a driving strap, the gland and the pressing plate are directly riveted together, the bearing disk is mounted at the finger tip of the diaphragm, and the driving strap is connected with the gland through the driving strap rivet. The automotive pull type clutch bearing disk assembly further comprises a clamp spring, the clamp spring comprises a clamping ring, a left clamping leg and a right clamping leg, three square holes in uniform circumferential distribution and three flangings in uniform circumferential distribution are arranged on the bearing disk, grooves are arranged on two sides of each flanging of the bearing disk symmetrically, a right-angled hook is arranged on each flanging, two arc convex lugs of the clamp spring are inserted into two of the square holes of the bearing disk respectively, and the left clamping leg and the right clamping leg of the clamp spring are inserted into the left square hole of the bearing disk. The automotive pull type clutch bearing disk assembly is simple in structure, easy to manufacture and assemble, high in safe reliability, low in cost and long in service life.