5results 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 a height-adjustable trundle device for a low rack. The height-adjustable trundle device comprises the rack and two pairs of trundle mechanisms, the two pairs of trundle mechanisms are installed on the two sides of the rack and each comprise a support, a connecting plate is fixed to one side of the support and fixed to the side wall of the rack, an adjusting shaft is arranged in the support in an up-down sliding mode, the bottom end of the adjusting shaft is connected with a supporting plate, the adjusting shaft is arranged between the support and the supporting plate and provided with a threaded section, and the threaded section is in threaded connection with a nut. Moving wheels are installed at the bottom of the supporting plate, an installation sleeve is fixed to the supporting plate, the end, close to the supporting plate, of the adjusting shaft is inserted into the installation sleeve, a third bolt is arranged between the supporting plate and the adjusting shaft, a locking groove is formed in the support, a locking piece is arranged on the locking groove, and a second bolt is installed between the locking piece and the adjusting shaft. And a second screw hole matched with the second bolt is formed in the adjusting shaft. Through the relevant structural design, the height of the machine frame can be effectively adjusted according to actual use requirements.

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.

The utility model discloses a clamping device of a lower limb lifting device, and particularly relates to the technical field of clamping devices, a control assembly can effectively adjust the height of an inclined table, a rotating roller is connected with a fixed table through a mounting plate, the rotating roller can rotate in the mounting plate, and a locking knob at one end of the rotating roller is used for fixing. A long shaft and a short shaft of a convex seat at the other end of the rotating roller are different in length, when the locking knob is unscrewed to rotate the rotating roller, the supporting state of the convex seat between the fixed table and the inclined table is changed, so that the inclined table rises or falls, the locking knob is screwed down to lock the height after adjustment is completed, and the design can meet the requirements of different users for the lifting height of the lower limbs; the inclined table is better attached to the human body, the applicability of the device is enhanced, the design of the arc-shaped window is very gentle, the lower limbs of the human body can slide in the device along an arc-shaped path, the actions such as unfolding and folding can be achieved, the device can adapt to the actions such as slight flexion and extension and separation and folding of the legs in the using process, and the problem that blood circulation is not smooth is effectively solved.