5results about How to "Avoid Metal Fatigue" patented technology

The present invention discloses a strain clamp that can be quickly positioned and installed, and belongs to the field of electric power communication technology. The present invention includes a strain clamp, wherein the outer wall of the strain clamp is provided with a mounting assembly extending into the interior thereof, and a limiting assembly is provided inside the strain clamp below the mounting assembly. When the strain clamp of the present invention is in a relatively harsh environment, the cable body inside the strain clamp is stretched due to environmental factors. Since a portion of the cable body is wound around the outer wall of the reeling column, and the other end is limited between the first lower pressure plate and the clamping seat, the cable body between the reeling column and the clamping seat is straightened, and the reeling column can slide, and then the reeling column can be driven to rotate by the cooperation of the inner connecting tube, the protrusion and the arc-shaped slide groove, so that the cable body can be reeled in, which can effectively avoid metal fatigue caused by repeated stretching of the cable body, and greatly extend its service life.

The utility model provides a metal roof with screw clamps, which relates to the technical field of metal roof construction and comprises a roof purline, a bottom plate layer, a first functional layer and a profiled metal plate are sequentially laid on the roof purline, a plurality of protrusions are evenly distributed on the profiled metal plate in the direction perpendicular to the roof purline, a plurality of screws are vertically and fixedly arranged on the roof purline, and the screws are arranged on the first functional layer. And the screw rod extends and penetrates to the upper end of the bulge, and is locked downwards through a fastener. And a bracket clamped on two side surfaces of the bulge is arranged on the outer side of the screw rod, and is fixedly arranged on the profiled metal plate. The connecting piece is arranged between the fastening piece and the bulge and is used for pressing the profiled metal plate, and the two side walls of the connecting piece are propped against the inner wall of the bracket. A bolt is arranged in the middle of the side wall of the bracket and penetrates through the connecting piece. The metal roof is locked downwards through the fastener, so that the inner layer structure of the whole metal roof is connected more tightly, and wind uplift and overturning accidents caused by overlarge wind force are avoided.

The utility model discloses a transformer with a shockproof function, which relates to the technical field of transformers and specifically comprises a protective box body, mounting beams are arranged at the top and the bottom of an inner cavity of the protective box body, an iron core is mounted between the mounting beams, a coil is mounted on the outer side of a core column of the iron core, and a sealing top cover is arranged above the coil. A connecting column head corresponding to the coil is mounted at the top of the sealing top cover, and the bottom end of the connecting column head is connected with the coil through a wire; damping mechanisms are arranged at the two ends of the installation cross beam, the installation cross beam is connected with the protection box body through the damping mechanisms, and each damping mechanism comprises an L-shaped plate. When the transformer is used, vibration generated by the transformer assembly can be eliminated, and the problems that the transformer assembly is fastened in the shell through a bolt, so that the connecting pins are in rigid connection, and metal fatigue is caused by long-term use are solved.

The application discloses a petroleum conveying pipeline backwashing valve and relates to the technical field of valves.The petroleum conveying pipeline backwashing valve comprises a connecting pipe provided with threaded caps at two ends, a mounting box, a switching mechanism arranged on the mounting box and used for switching the filtering area of a filter plate, a circular plate slidingly connected to the mounting box, a first L-shaped plate fixedly connected to the sidewall of the circular plate, a second L-shaped plate fixedly connected to the side of the first L-shaped plate away from the connecting pipe, and a switching block fixedly connected to the side of the mounting plate close to the circular plate.The petroleum conveying pipeline backwashing valve is used for switching and cleaning the working area and the cleaning area of the filter plate, and the water inlet and the water outlet do not need to be closed and opened for multiple times, so that the metal fatigue and the water hammer effect generated in the process of closing and opening the water inlet and the water outlet for multiple times are avoided.

The utility model discloses a stranding machine for cable production, and belongs to the technical field of cable production, the stranding machine comprises a housing, a first furling disc, a second furling disc, a third furling disc and a stranding cylinder, the housing is internally provided with an accommodating cavity, the accommodating cavity forms two through ports on the housing, and the first furling disc, the second furling disc, the third furling disc and the stranding cylinder are arranged in the housing. The first furling disc, the second furling disc, the third furling disc and the wire twisting barrel are sequentially arranged in the containing cavity in sequence, and a cable core of a cable sequentially penetrates through the first furling disc, the second furling disc, the third furling disc and the wire twisting barrel and is respectively located at a first furling position, a second furling position, a third furling position and a fourth furling position. Compared with the prior art, the cable folding device has the advantages that through the formed first folding position, the second folding position, the third folding position and the fourth folding position, gradual folding in the cable twisting process is achieved, and folding of each stage can bear the deformation stretching amount of part of cable cores; therefore, the peak stress is reduced, and the problems of wire core surface scratch and metal fatigue are effectively avoided.