43results about How to "Sliding limit" patented technology

The application provides a limited rock mass passive earth pressure test device and a use method, which comprises a bottom plate and a box body fixed on the bottom plate, a baffle plate is slidably arranged in the box body, a retaining wall plate is arranged on one side of the box body, the retaining wall plate is connected with a horizontal driving mechanism, four linearly arranged pressure sensors are fixedly arranged on the retaining wall plate, a space with an open upper end is formed between the retaining wall plate and the baffle plate, a pressing plate one is slidably arranged along the depth direction of the box body, a pressing plate two is slidably arranged in the pressing plate one, and the pressing plate two is slidably matched with a T-shaped groove arranged on the baffle plate. The baffle plate which can slide in the box body is arranged, so that the volume of the soil during the test can be flexibly adjusted, and the structure is simple and the operation is convenient.

The utility model relates to the technical field of welding roller carriers, in particular to an angle-adjustable welding roller carrier. According to the technical scheme, the device comprises a U-shaped moving seat and a rotating plate, one side of the lower surface of the rotating plate is rotationally connected with a multi-stage hydraulic cylinder, the output end of the multi-stage hydraulic cylinder is rotationally connected with the bottom of the inner wall of the U-shaped moving seat, and the side, away from the multi-stage hydraulic cylinder, of the outer surface of the rotating plate is rotationally connected with the inner wall of the U-shaped moving seat; u-shaped moving frames are symmetrically arranged at the positions, close to the front surface and the rear surface, of the upper surface of the rotating plate, a supporting rotating roller is rotationally installed in each U-shaped moving frame, sliding rings are slidably connected to the positions, close to the two ends, of the outer surface of each supporting rotating roller in a sleeving mode, and a limiting baffle ring is fixedly connected to the inner side of each sliding ring. The angle of a weldment can be adjusted, so that welding work is facilitated, meanwhile, the limiting effect on the weldment after angle adjustment is achieved, and the inclined weldment is prevented from sliding off from the roller carrier.