468results about How to "Reduce welding process" patented technology

The invention discloses a fencing post and a fencing system. The fencing post is used for fixedly installing fencing sheet bodies extending along the longitudinal direction and the horizontal direction; the fencing post comprises a first body extending along the longitudinal direction and a second body fixedly connected to the first body; the side of the first body, which is connected with the second body, is provided with a connecting surface on which a plurality of first locating pieces are distributed along the longitudinal direction; a plurality of second locating pieces matched with the first locating pieces are respectively distributed on the second body along the longitudinal direction; one locating piece of the first locating pieces and the second locating pieces is connected with the other locating pieces in a locating way after passing through the sheet bodies; and the sheet bodies are clamped and fixed between the second body and the first body. The fencing post can be used for improving the firmness and the flatness in fixing the fencing sheet bodies and has the advantage of good disassembly and damage preventing effects.

The invention discloses a device and method for replacing a track slab of a slab ballastless track. The device comprises a lateral sliding mechanism, a temporary support structure and traction equipment, wherein the temporary support structure is used for performing horizontal support on the lateral sliding mechanism; the traction equipment is used for driving a track slab which needs to be laterally moved to laterally slide on the lateral sliding mechanism; the lateral sliding mechanism is horizontally arranged on the temporary support structure; and the lateral sliding mechanism is erected above a base plate on which a damaged track slab is located through the temporary support structure. The method comprises the following steps of: I, moving up steel rails; II, moving up the damaged track slab; III, erecting the lateral sliding mechanism; IV, laying the damaged track slab flatwise; V, moving right the damaged track slab; VI, hoisting the damaged track slab away and lifting a new track slab; VII, moving left the new track slab; VIII, removing the lateral sliding mechanism; IX, installing the new track slab; and X, moving down the steel rails and mounting. The device for replacing the track slab of the slab ballastless track is reasonable in design, easy and simple in use and operation and good in using effect, and the method for replacing the track slab of the slab ballastless track can be conveniently realized, and can be used for efficiently, rapidly and simply completing the replacement process of the track slab of the slab ballastless track.

To provide a method of manufacturing a large-size sheet metal product with a three-dimensional shape such as a cover for a machine tool without a welding step, and also to provide its product. A cover unit 1 for a machine tool is manufactured by fixing edge members 110, 120, 130, 210, 220, 230 on the periphery of a cover sheet 10 by a fixing tool such as a bolt or a nut. In the cover sheet 10 or the respective edge members, the flat development based on data of a three-dimensional solid model of the cover unit 1 is nested on the sheet metal material on a laser beam machine, and laser beam machining is carried out. In the laser beam machining, the respective members are marked with information on bending lines, bending angles, or the like necessary for post processes. The members which have been precisely laser beam machined are subjected to necessary bending works, and assembled by the fixing tool, so as to obtain the large-size sheet metal product with the three-dimensional shape without the welding step.