7results about How to "Improve the anti-fall effect" 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.

This utility model belongs to the technical field of electric tightening gun reaction arm, and particularly relates to an anti-fall device for the reaction arm of an electric tightening gun. It includes a fixed cylinder and a sliding rod, with the sliding rod movable inside the fixed cylinder. An anti-fall mechanism is installed on the outside of the fixed cylinder. This anti-fall device for the electric tightening gun reaction arm, through the installation of the anti-fall mechanism, detects abnormal sliding behavior of the sliding rod via a detection component. The detection component then transmits a signal, controlling a hydraulic telescopic rod to push a movable plate towards the side plate. This causes the connecting shaft to move inside the movable groove. During this movement, the connecting shaft drives a clamping plate to rotate around the fixed seat, causing the clamping plate to move an anti-slip pad inward. This brings the anti-slip pad into contact with the outer surface of the sliding rod, continuously pressing inward, thus providing cushioning and auxiliary support to the sliding rod, preventing the tightening gun from falling and thus avoiding damage to the tightening gun.

The utility model relates to the technical field of high-altitude operation safety protection, in particular to a rigid guide rail falling protector which comprises a connecting frame and a pull arm, a movable cavity is formed in the connecting frame in a penetrating mode, a stabilizing wheel and a lower wheel are arranged on the inner wall of the connecting frame towards the movable cavity, the stabilizing wheel is connected to one side of the movable cavity, and the lower wheel is connected to the other side of the movable cavity. The lower wheel is positioned below the movable cavity; an upper wheel is connected between the pull arm and the connecting frame, the upper wheel is connected to the top of the movable cavity, the pull arm is eccentrically connected to the upper wheel, a locking structure is arranged on one side of the pull arm, and a lock catch hole is formed in the pull arm. According to the anti-falling device, the anti-falling device can respond quickly and stably, and the anti-falling effect is improved.

The utility model relates to power facility maintenance technical field especially relates to a kind of anti-falling commutator convenient to adjust, including commutator body, the commutator body is equipped with adjusting cavity, and it is equipped with protection part relative adjusting cavity, the protection part is wrapped in adjusting cavity, commutating track is rotatably connected in adjusting cavity, the commutating track is slidably connected in the inner wall of protection part, the protection part is equipped with multiple mounting parts along the direction of being away from commutating track, multiple the mounting part is equiangularly spaced apart along the direction of rotation of commutating track;The mounting part is equipped with mounting groove towards commutating track, moving track is equipped in the mounting groove, the mounting part is equipped with mounting structure relative moving track, the moving track is connected in commutating track.The utility model aims at improving the structural strength of entire commutator, realizes the commutation of quick and stable.

The utility model relates to the field of scaffold anti-falling device, specifically a kind of anti-falling device for attached lifting scaffold, including inner row stand and wall support;Fixedly arranged with installation guide rail on inner row stand, multiple guide rail cross bars are evenly provided on installation guide rail, wall support is installed on the wall body of support, wall support is provided with wall installation positioning mechanism, anti-falling device mechanism is slidably connected on the outer side of inner row stand, anti-falling device mechanism includes the anti-falling device support shell slidably connected in the outer side of installation guide rail, shaft body is provided on anti-falling device support shell, anti-falling pendulum block is rotatably connected on shaft body, anti-falling pendulum block is provided with shift fork limiting slot, anti-falling shift fork is provided on shift fork limiting slot, and the anti-falling shift fork is rotatably connected with the shaft body, the inside of anti-falling device support shell is fixedly provided with pendulum block limiting frame, pendulum block limiting frame is matched with anti-falling pendulum block, unloading mechanism is provided on anti-falling device support shell, can be to scaffold anti-falling protection, improve the security of construction.

The utility model relates to the technical field of tunnel light transition zone structures, in particular to a tunnel light transition zone top opening anti-falling device which comprises a double-layer stacked anti-falling structure, and the anti-falling structure is installed on the top face of a side wall of a top opening of a tunnel light transition zone through a fixing piece and covers the range of the top opening. The anti-falling structure comprises a stainless steel woven mesh located on the upper layer and a stainless steel mesh located on the lower layer, wherein the mesh size of the stainless steel woven mesh is smaller than that of the stainless steel mesh. The utility model has the advantages that the operation period safety of the perforated structure is ensured while the light transmission effect of the light transition zone is not influenced; through the design of a double-layer anti-falling structure, the anti-falling effect is improved; and the design thought is simple, the construction step sequence is concise, the structural integrity is good, good innovativeness and application value are achieved, and the method is suitable for popularization.