2results 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.