Inner-wall rope-pressing cable drum

Abstract

The invention provides an inner-wall rope-pressing cable drum, which comprises a drum provided with a drum shaft, wherein, the drum is provided with a rope return ring; the inner side of the drum is provided with a plurality of cable pressing plates; and the drum is further provided with a rope outlet. In the invention, the tail end of a cable is fixed at the inner side of the drum, thus shortening the length of the drum and lowering the weight of the drum. Compared with the prior art, the inner-wall rope-pressing cable drum simplifies the structure of the drum, reducing the link for processing an oblique rope groove, lowering technological difficulty and saving production cost. The cable is in a natural shape and the cable pressing plates at the inner side of the drum are stressed evenly, thus the strength of the cable is not lowered due to buckling or distortion.

Description

technical field [0001] The invention relates to a crane steel wire rope drum, in particular to an inner wall pressure rope type steel wire rope drum. Background technique [0002] The overall size and self-weight of large lifting capacity and high-lift crane equipment increase the difficulty of manufacturing, transportation and installation, and the cost of the whole machine is also very expensive. How to reduce the overall size and self-weight of the equipment has become an increasingly prominent problem. The wire rope is an important part of the crane. Its function is to be wound on the drum, bear all the lifting load, and perform power transmission to complete the task of lifting and lowering heavy objects. Therefore, the fixing method of the wire rope on the drum will directly affect To the size of the reel, which affects the layout of the whole machine structure, overall dimensions, and installation methods. At present, there are mainly three methods for fixing the ste...

AI Technical Summary

Problems solved by technology

At present, there are mainly three methods for fixing the steel wire rope on the crane. One is to fix the rope tail on the outer wall of the drum with a pressure plate and bolts. It takes up a lot of space and can only be used for two layers of winding at most; one is that the wire rope is wound on the wedge and put into the wedge hole of the reel together with the wedge, and is wedged tightly under the tension of the wire rope

This method is also more complex in the structure of the drum, and it is more troublesome to replace the wire rope.

[0003] For hoisting cranes with large lifting capacity and high lift, the steel wire rope is usually wound in multiple layers on the drum, and there are return rope rings in the middle and at both ends. The steel wire rope is usually directly fixed on the outer circle of the drum with a pressure plate, and then The reel has a rope groove with a rotating direction for winding, but the middle and both sides of the multi-layer winding reel are equipped with a return rope ring device. The steel wire rope must pass through the return rope ring from the pressure rope end to the working end. This requires that the steel wire rope must first be folded over an angle, and then a rope groove and a gap must be made at the corresponding position on the reel and the return rope ring. The steel wire rope passes through the gap from the pressure rope section to the working section. Figure 5 , Image 6 and Figure 7 , at this time, if the diameter of the wire rope is too large, the bending angle should not be too large, because the steel wire rope with a large diameter is too rigid. If you want to pass through the return rope ring, you must cooperate with some auxiliary tools to thread the rope, and the reel and the return rope ring Opening oblique grooves on the top increases the difficulty of the process. At the same time, the steel wire rope is pressed on the outer wall of the drum. For the rope pressing at the end of the double drum, a total of 6 rope grooves are added. For the rope pressing in the middle of the double drum, not only the rope ring is added. 3 turns, and 2 return rope rings in the middle, which will increase the axial length of the reel and increase the weight of the reel

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