3results about How to "Realize control regulation" patented technology

The utility model belongs to the technical field of elevator shaft construction, and particularly relates to a liftable landing leg type elevator shaft construction platform. The liftable supporting leg type elevator shaft construction platform comprises a construction table, a bearing assembly used for supporting the construction table is installed on the front side of the bottom of the construction table, and the bearing assembly comprises two fixing frames; an adjusting assembly used for adjusting the position of the construction table is installed on the outer side of the fixing frame. A driving assembly used for providing power input for the adjusting assembly is installed at the bottom of the construction table. The bearing assembly further comprises two moving frames, buffer blocks are fixedly connected to the two ends of the outer wall of each moving frame, the two fixing frames are arranged on the two sides of the bottom of the construction table correspondingly, and the fixing blocks can be driven by the driving assembly to move in the vertical direction, so that the supporting plate is driven to move up and down through the synergistic effect of the adjusting assembly; and meanwhile, the bearing assemblies work synchronously, and the construction position of the construction table is controlled to be adjusted through movement of the movable frame and the supporting plate.

The utility model relates to the technical field of vacuum pumps, in particular to a replaceable motor type single-stage rotary vane vacuum pump which comprises a base, a cylinder body is fixedly connected to the upper surface of the base, a rotor input shaft is rotatably connected to the inner wall of the cylinder body, and a fixed box is fixedly connected to the side, close to the cylinder body, of the base. A horizontal motor is installed on the upper surface of the base, a first rotating rod is fixedly connected to the output end of the horizontal motor, a driving belt wheel is fixedly connected to the other end of the first rotating rod, and a first driven belt wheel is fixedly connected to the end, away from the cylinder body, of a rotor input shaft; the side, close to the driving belt wheel, of the fixing box is rotationally connected with a second rotating rod, and the other end of the second rotating rod is fixedly connected with a second driven belt wheel. According to the utility model, the problem that the vacuum pump is relatively high in use cost due to the fact that the vacuum pump is relatively poor in adaptability and difficult to adapt to the use requirements of different pumping speeds and the vacuum pump with adaptive requirements needs to be used under the different pumping speed requirements is solved.

The application discloses a kind of water-resisting layer-pressurized water layer interbedded sudden gushing whole process simulation test device, comprising: box, the opposite side of the box is respectively fixed with backpack water tank, each backpack water tank is fixed with constant pressure water source supply component;The plate of one opposite face of the box is stainless steel, the plate of the other opposite face is transparent glass, and the inside of the box is divided into clay water-resisting layer and pressurized water layer, and the position of backpack water tank is located at pressurized water layer;The plate adjacent to the box and backpack water tank is water-permeable sand filter plate, a plurality of water-permeable holes are formed in the water-permeable sand filter plate;The bottom plate of the box is stainless steel plate, and the bottom plate is provided with sudden gushing simulation component.According to the application, different pressurized water pressure, pressurized water layer thickness, sudden gushing crack width, i.e., sudden gushing water sand volume can be controlled and adjusted, stratum displacement, stratum strain and sudden gushing water sand volume can be collected and monitored in real time, stratum water and soil pressure can be collected and monitored in real time without disturbance, and sudden gushing catastrophe whole process can be monitored and recorded in real time.