50results about How to "Reduce sealing links" patented technology

The invention relates to an integrated lift translation protective sealing door. Wherein, its hinge leaf is fixed with upper axle base and lower axle base; said two bases are connected to the prolonged hinge leaf axle via bearings; the upper and lower hinge leaf plates are connected to the upper and lower connecting base plates via the upper and lower torque balance translation support bases; one end of upper and lower torque balance translation support bases is connected to the upper and lower connecting base plate pin axles, while the another end sheathes the prolonged hinge leaf axle; there are spaces between the balance translation support bases and the hinge leaf axle base, and between the pin axle holes and the connecting base plate pin axles; the jack lifter is arranged between the upper hinge leaf and the lower hinge leaf, while its square head of lift end is supported inside the supporting translation base; there is space between the square head and the wall of supporting groove; the inner wall of supporting groove has concave rolling channel embedded with rolling balls. The invention can be widely used in protective projects.

This invention relates to a spring hydraulic operating unit used in a high voltage breaker including an oil tank, disk reed set, a working cylinder, an energy stored piston and a cylinder, in which, the working cylinder is set in the hole of the cylinder to be spaced by a circular truncated cone end face with the diameter of phia, an oil tank is fixed above the cylinder, the energy-stored piston is installed between the working cylinder and the cylinder to form a bush-like energy stored mode of the piston and the working cylinder, a press board is set under the energy stored piston on the working cylinder, the phim end face of the board is contacted with the end surface of the piston, the phin face is contacted with the disk reed set, a round plate is set outside of the phin cylinder of the press board, a plate is jacketed on the other end of the working cylinder, the disk reed set is sleeved between the press board and the plate and all sides of the cylinder is set with a reversing valve, an oil pump, a safety pressure releasing valve and a travel switch.

The invention relates to a combined type hydraulic cylinder design structure capable of supplying positive and negative bending roller force, comprising end cylinder bodies 1, pistons 2, a middle cylinder body 3, a dustproof ring 4, connecting rods 5, flange covers 8, a guide strap 9 and seal elements 11, wherein the end cylinder bodies are symmetrically installed at both ends of the middle cylinder body and provided with respective oil passages; the pistons are arranged in all cylinder barrels; the seal elements are configured on the pistons, and one end surface of each piston 2 is provided with a counter bore 7; all the pistons are fixed by the flange covers, and different annular concave grooves are arranged at the inner diameter of the flange covers and used for being respectively provided with the dustproof ring and the guide strap; the connecting rods are inserted into the counter bores of the two pistons which are adjacently, symmetrically and reversely installed; a space limited by the connecting rods can contain a lug boss of an upper roller bearing support 6 or a lower roller bearing support 10 so that the two pistons which are adjacently, symmetrically and reversely installed can supply positive and negative bending roller force; and the same pistons are installed in the cylinder barrel of the middle cylinder body back to back and share an oil passage of the middle cylinder body. The invention has simple structure and few seal steps and auxiliary pipelines and reduces the control degree.