3results about How to "Controllable size" patented technology

The application provides a straddle type bogie frame and a straddle type monorail vehicle, the straddle type bogie frame comprising a combined beam and a down bending beam, the combined beam comprising a high side beam, a low side beam, a traction beam connecting the high side beam and the low side beam, and an end beam connecting the high side beam and the low side beam, the number of the down bending beams being two, and the two down bending beams being connected with the high side beam and the low side beam respectively, and the combined beam and the down bending beam being connected in a T joint fillet welding and V type butt joint welding mode. The straddle type bogie frame and the straddle type monorail vehicle are formed by combining and welding the combined beam and the down bending beam formed in a split mode, the air chamber is independently formed in the down bending beam, the low side beam and the high side beam are decoupled, the structure is better in stress bearing, and the weld accessibility is better; the combined beam serves as a base, and when the combined beam is combined with the down bending beam, the overall welding deformation is small, the combined beam is not prone to twisting, and the size after welding is easy to control.

The invention discloses a detachable drag chain wheel fixing seat and a walking frame for a large excavator. The detachable drag chain wheel fixing seat comprises a plate body and a supporting body. The number of the supporting bodies is two, the two supporting bodies are symmetrically welded to the upper end face of the plate body in parallel, the plate body is provided with a walking frame connecting hole, and the upper end of each supporting body is provided with a wheel shaft base connecting hole; the plate body is connected with the plate body connecting hole in the walking frame welding piece through the walking frame connecting hole and the first connecting piece; the axle seat connecting holes of the supporting bodies are connected with axle seats through second connecting pieces, axles are arranged in the axle seats, and the axles are provided with drag chain wheels between the two supporting bodies. The detachable drag chain wheel fixing seat is convenient to mount, dismount and maintain, and once the detachable drag chain wheel fixing seat is damaged, the detachable drag chain wheel fixing seat can be maintained or remanufactured according to the damage degree.

The utility model discloses a valve port structure for a composite material tank car, which belongs to the technical field of transportation tank car parts and comprises a discharging flange and a composite material anti-corrosion component. The discharging flange comprises a flange main body part which is a barrel head, one end of the flange main body part is provided with an annular convex part which extends towards the inner side, and the other end of the flange main body part is provided with a flange connecting section which extends towards the outer side; the composite material anti-corrosion component comprises an anti-corrosion component body part wrapping the flange body part and the annular protruding part. An anti-corrosion part fixing section covering the surface of the flange connecting section is arranged at one end of the anti-corrosion part main body part; a flange connecting hole is formed in the end part of the flange main body part, and a hole is formed in the position, corresponding to the flange connecting hole, of the anti-corrosion part main body part. The composite material anti-corrosion component made of the composite material is arranged on the outer side of the metal flange, so that a good anti-corrosion effect can be provided. The composite anti-corrosion part made of the composite material is prepared through a mold, and the size of the composite anti-corrosion part is easy to control.