78results about How to "Realize free lifting" patented technology

The invention discloses a simple dining trolley, which belongs to the technical field of catering equipment. The technical problem to be solved by the invention is to solve the problem that the distance between the partitions of each layer in the prior art cannot be freely adjusted according to the height and volume of the items The problem of distance. The technical scheme adopted is: including the top box, support frame, bottom plate and universal wheels; a pair of support frames are symmetrically arranged between the top box and the bottom plate, and the bottom surface of the top box and the top surface of the bottom plate are respectively fixedly connected with the support frame, The direction wheels are arranged on the four top corners of the bottom plate; the characteristic is that there is a lifting device between the top box and the bottom plate, and the lifting device includes a lifting horizontal plate and connecting pieces; the connecting pieces are vertically arranged and multiple connecting pieces are sleeved on the On the supporting frame, the lifting horizontal plate is arranged parallel to the bottom plate, and the top corners of at least two lifting horizontal plates are respectively connected with the connecting piece.

The invention relates to the technical field of doors and windows, and particularly relates to an electric lifting door and window. The electric lifting door and window comprises a window frame / door frame and a movable window sash capable of sliding up and down along the window frame / door frame. A driving device is provided with a transmission shaft driven by a lifting motor. The transmission shaft is horizontally arranged, and the two ends of the transmission shaft extend out of the two opposite side faces of the movable window sash correspondingly and are each fixedly provided with a gear. Racks are fixedly arranged on the left inner side wall and the right inner side wall of the window frame / door frame correspondingly. The gears are engaged with the racks. Along with rotation of the lifting motor, under the interaction of the gears and the racks, the movable window sash is driven to slide up and down along a sliding rail on the inner side face of the window frame / door frame, and accordingly the movable window sash is opened or closed. According to the electric lifting door and window, the transmission shaft is driven by the lifting motor to extend out in two directions, the movable window sash is driven to slide up and down in cooperation with the gears and the racks, movement is stable, friction force is small, simpleness and high efficiency are achieved, movement is flexible, the clamping stagnation delay phenomenon is avoided, the occupied space is small, and cost is saved.

The invention discloses a sludge cleaning device for water conservancy ecological environment protection and a cleaning method thereof, belonging to the technical field of water conservancy engineering. A sludge cleaning device for water conservancy and ecological environment protection, comprising a hull and a swirl column, the other end of the swirl column is fixedly connected with a negative pressure column, the side wall of the swirl column is fixedly connected with a feed pipe, and one end of the feed pipe is rotatably connected There is a diversion pipe, the bottom of the diversion pipe is connected with a dredging column, the dredging column is fixedly connected with a first motor, the output end of the first motor is fixedly connected with a drive shaft, one end of the drive shaft is fixedly connected with a spiral plate, and the drive shaft The other end is fixedly connected to the propeller; the worm drives the dredging column to rotate through the rocker mechanism; the negative pressure column is fixedly connected to the spray pipe, the top of the spray pipe is provided with a spray assembly for irrigation, and the positioning shaft is provided with a device for adjusting the rotation angle of the diversion pipe. The adjustment assembly; the invention not only reduces the difficulty of dredging, but also further ensures the high efficiency, rationality and accuracy of sludge cleaning.

The invention relates to a lifting automatic pre-overhaul device for water conservancy projects, which belongs to the technical field of water conservancy pre-overhaul equipment, and includes a support frame. An inspection box is vertically moved on the support frame. The upper part of the inspection box is opened and the interior is hollow. , the support frame is provided with a lifting assembly that drives the inspection box to lift in the vertical direction, and a storage box for storing decorative panels is arranged in the inspection box, and a side opening is opened on one side of the inspection box. A hammering device is provided on the side of the box close to the side opening, and the hammering device is used to crush the damaged decorative panels. A debris groove is provided on the storage box and directly below the hammering device. It has the advantages of reducing the risk system for workers and facilitating the removal of decorative panels.