3results about How to "Effective height adjustment" patented technology

An electric hoist with a fall-prevention structure effectively solves the problem of the risk of electric hoist falling. It includes a track, an electric trolley, and a hoist body. The hoist body is equipped with protective devices located on the front and rear sides of the electric trolley. Each protective device includes a frame, which is fixedly connected to the hoist body. A rotating shaft is mounted on the frame, and a first screw and a second screw with opposite thread directions are coaxially fixed to the rotating shaft. The first screw is threadedly connected to a first nut, and a first frame is fixed to the upper end of the first nut. A first roller in contact with the track is rotatably connected to the lower end of a first positioning plate. Multiple third screws are fixed to the lower end of the first frame, inserting vertically into the interior of the first frame. A second screw is threadedly connected to a second nut, and a second frame is fixed to the upper end of the second nut. A second roller in contact with the track is rotatably connected to the lower end of a second positioning plate. Multiple fourth screws are fixed to the lower end of the second frame, inserting vertically into the interior of the second frame.

The utility model discloses adjustable height formula fruit tree support for picking experience, it includes bottom plate: the top welding of bottom plate has the vertical pole and is fixedly connected with two symmetrical setting slide rails through bolt, the surface sliding connection of slide rail has the sliding block, the bottom installation of bottom plate has universal wheel, the surface sliding connection of vertical pole has the transverse board, the common rotation connection of hinge board is passed through the pivot between transverse board and sliding block, the top welding of bottom plate has fixed block, the surface rotation connection of fixed block has the threaded rod. The utility model discloses through rotating threaded rod and drives threaded block movement, makes threaded block through cross bar and drives sliding block in horizontal direction and slide appropriate distance, at this moment under the limiting effect of vertical pole, makes sliding block through hinge board and drives transverse board and moves appropriate movement in vertical direction, can reach the effective height of fruit tree support and be adjusted to the purpose that makes the support height can be adapted to the height of actual picking experience fruit tree, and then improves the applicability of support.

This utility model discloses a tooling trolley for changing the head of a molding machine, comprising: a base plate, a top plate directly above the base plate, protrusions installed at the four corners of the top of the base plate and the four corners of the bottom of the top plate, lifting support frames installed on the sides of the base plate and the top plate through the protrusions, a rotating disk at the front end of the top of the top plate, a bracket plate installed on the top of the rotating disk, two symmetrical support grooves on the surface of the bracket plate, a stabilizing mechanism installed on the surface of the top plate, the stabilizing mechanism including a locking component and a supporting component, a rectangular groove opened on the surface of the top plate near the rear, the locking component being movably disposed in the rectangular groove, and the supporting component being disposed at the front end of the top plate. When using this device, through mechanized drive, precise positioning, structural reinforcement and functional integration, the efficiency, safety and adaptability problems of existing devices are systematically solved.