2results about How to "Avoid tangled rope" patented technology

The invention belongs to the technical field of electric hoists, and particularly relates to a European-style steel wire rope electric hoist which comprises a sliding rail, a sliding table is slidably connected to the outer wall of the sliding rail, an outer cover is fixedly connected to the bottom of the sliding table, and a base is fixedly connected to the bottom of the outer cover. According to the European-style steel wire rope electric hoist provided by the invention, when an object (such as a plate-shaped piece) is hoisted, the object needs to be kept stable when the first pull rope is in a straightened state, at the moment, different positions of the object are hooked and pulled through a plurality of hooks at the same time, and if one second pull rope is in a straightened state and the object is in an inclined state, the other second pull rope is not in a straightened state; if the object is in the loose state, the other second pull rope in the loose state is pulled upwards, the second pull rope penetrates out of the inserting groove, the first pull rope is wound, the object is driven to move upwards, at the moment, under the gravity effect of the object, the limiting bead abuts against the straight face of the other side of the clamping block, and the second pull rope is prevented from sliding in the inserting groove through limiting of the clamping block; therefore, the object is kept to be lifted upwards in a flat state.

The application discloses a safety type rotary arm auxiliary hoist structure for a tower crane, which is arranged between a lifting mechanism and an amplitude changing mechanism, and comprises a stand column, the stand column is rotatably arranged on a balance arm, an auxiliary basic arm is arranged on the top of the stand column, an extension arm is movably arranged on the auxiliary basic arm along the extension direction of the auxiliary basic arm, an auxiliary winch is further arranged on the top of the stand column, a steel wire rope of the auxiliary winch is sequentially connected to an auxiliary hoist hook through a rope arranging pulley, a deflecting pulley and a fixed pulley, the rope arranging pulley is arranged on the auxiliary basic arm, the deflecting pulley is arranged on the stand column, and the fixed pulley is arranged on the extension arm. The rotary arm auxiliary hoist is arranged near the lifting mechanism and the amplitude changing mechanism on the balance arm, so that the customer can conveniently maintain and repair the rotary arm auxiliary hoist.