4results about How to "Avoid repeated disassembly" patented technology

The invention discloses a large longitudinal slope simply supported steel truss girder high-position girder falling construction method, which relates to the technical field of bridge construction, and comprises the following steps: S1, arranging a girder falling supporting point position, manufacturing a girder falling support and supporting a steel truss girder; s2, synchronous jacking, local falling, section drawing and re-jacking are circularly and alternately conducted through a beam falling support at one end of the steel truss beam till first-stage beam falling is completed; s3, a jack arranged on a high pier end padstone of the steel truss girder is dismantled, girder falling continues, and second-stage girder falling is completed; s4, synchronous jacking, local falling, section drawing and re-jacking circulation are conducted through a beam falling support at the low pier end of the steel truss beam till third-stage beam falling is completed; s5, the jack arranged on the low pier end padstone of the steel truss girder is dismantled, girder falling continues, and fourth-stage girder falling is completed; s6, pressure grouting is conducted on the anchor bolt holes, other facilities are dismantled, and construction is completed; the technical problems that in the prior art, beam falling of a large-span steel truss girder bridge is difficult to control, and efficiency is low are solved.

The utility model relates to the technical field of supporting piece machining and positioning, in particular to a supporting piece laser surface quenching process positioning auxiliary device which comprises a bottom plate, a hydraulic telescopic rod is arranged at the upper end of the bottom plate, a supporting plate is arranged at the upper end of the hydraulic telescopic rod, and an electric rotating column is arranged at the upper end of the supporting plate. A horizontal moving device is arranged at the upper end of the electric rotating column, an angle adjusting device is arranged at the upper end of the horizontal moving device, a clamping plate is arranged at the upper end of the angle adjusting device, control plates are arranged at the four ends of the upper side wall of the clamping plate, and positioning devices are arranged on the control plates; the horizontal moving device comprises a positioning box, a magnetic sliding rail and an electromagnetic block, the angle adjusting device comprises a supporting frame, a rotating rod and an adjusting motor, the positioning device comprises a limiting box, a rotating rod, a moving block and a positioning plate, a five-degree-of-freedom space positioning system is formed, and machining errors caused by thermal deformation or mechanical vibration are effectively restrained.

This application provides a car seat cushion, which is disposed on the side of the car seat headrest closest to the passenger. The cushion includes a cushion body, a first cover with a first space inside which a first inner core is filled, a second cover, and a connecting mechanism. The second cover at least covers the side of the first cover closest to the passenger. The connecting mechanism is disposed on the first and / or the second cover for detachable connection of the first and second covers. By providing a second cover on the cushion body, which at least covers the side of the first cover closest to the passenger, the second cover effectively prevents sweat, oil, and other substances from contaminating the cushion body. Simultaneously, the connecting mechanism allows the second cover to be freely detached relative to the cushion body, facilitating cleaning and replacement. This effectively avoids repeated disassembly of the cushion and its internal structure, further increasing the lifespan of the cushion.

The utility model relates to mechanical feeding structure technical field discloses a kind of self-adapting automatic feeding structure, comprising: workbench, feeding assembly and fixture. Feeding assembly, feeding assembly includes feeding plate and side plate, feeding plate is movably arranged in workbench, side plate can be moved towards or away from the direction of feeding plate, and the guide channel for guiding material is formed between feeding plate and side plate;Clamp, clamp can be moved towards or away from the direction of guide channel, and can be rotatably arranged on workbench around its axis;Wherein, fixture first locates workpiece, then moves close to guide channel, and then adjusts workpiece to adaptive angle in the process of rotation, to make the material output by guide channel orderly fall into the predetermined position of workpiece. By setting side plate can be moved towards or away from the direction of feeding plate, the width of guide channel can be self-adaptively adjusted, to adapt to the material conveying demand of different size specifications, ensure that different models of workpiece can be accurately positioned.