JPS644923Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a steady rest device for a hoisting wire rope in a grab-type or polyp-type bucket used for mining, dredging, etc. of earth and sand and sludge.

Conventionally, the rope steadying device installed on this type of bucket is a rope type in which rollers are arranged parallel to each other at regular intervals on the upper plate of the bucket, and the rope is inserted through the hollow hole. , or, as illustrated in FIG. 1, two pulleys H and D are placed on the upper plate 5 of the bucket, directly below the two upper rollers A and A arranged in parallel, along the gap between the rollers, and the flanges of It was common to use pulleys, which were arranged in series with the edges E and F close to each other.

However, in the above-mentioned steady rest device with pulleys, the gap between the bottom surfaces of the grooves of both pulleys is widened, so the swing of the rope 6 during operation is large, and if the rope is bent in the same direction as the pulley shaft, , the inscribed area A between the rope and each collar of the pulley is extremely small, causing slips between the rope and the pulley, resulting in significant uneven wear of the part, which causes the rope to break, and
There have been problems such as the wire getting caught between the two pulleys or derailing due to wear of the rim.

In view of these circumstances, the present invention solves all of the problems described above by arranging the two pulleys diagonally above and below in the conventional rope steady rest device with pulleys. be.

That is, the configuration of the present invention will be explained in detail based on FIGS. 2 and 3. 1 is a base fixed on the upper plate 5 of a polyp type bucket bag (not shown), and 2 and 2 are fixed at a constant interval α. The upper rollers 3 and 4 are supported on the upper part of the base 1, respectively, and the two rollers 3 and 4 are respectively pivotally supported below the base 1, and are arranged diagonally above and below each other along the gap between the rollers 2 and 2. At the pulley 3
a, 4a are the flanges of each pulley, and 3b, 4b
indicates the bottom of the groove.

The steady rest device according to the above configuration has a pulley 3.
and 4 are arranged diagonally upward and downward, and the rope 6 passing between them is supported at two points on the groove bottoms of the upper and lower pulleys, so there is no swing of the rope 6 that occurs in the direction between the grooves of both pulleys. or keep it small,
The flanges 3a and 4a reliably prevent slips between the rope and the groove bottom surfaces 3b and 4b during normal operation, and also prevent bending of the rope in the pulley axis direction.
By keeping the contact area A with the rope on the inner surface of the rope sufficiently large, the rotation of the pulley is facilitated, and wear on the rope and the flange is greatly reduced,
This also reliably prevents the rope 6 from getting caught in the pulley gap or derailing due to wear of the flange edge.

As described above, according to the present rope steadying device, the upper and lower pulleys can reliably contact the rope over a wide range of inner surfaces of their flanges, especially against swinging or bending of the rope in the axial direction of the pulley. Since the device rotates with the same movement, there is almost no jamming, wear, or deformation of the pulley flange due to slipping between the pulley and rope, which was seen in conventional steady rest devices of this type, and therefore, wear and tear on the rope can be significantly reduced. This provides a special effect.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway front view of a conventional steady rest device using pulleys, Fig. 2 is a partially cutaway front view of the proposed device, and Fig. 3 is a plan view thereof. . In addition, in the figure 1... base, 2... upper roller,
3, 4...pulley, 5...upper board, 6...rope.

Claims (1)

[Scope of utility model registration request] In a wire rope steady rest device, two upper rollers are arranged in parallel on a base fixed to the upper surface of an upper plate such as a grab bucket, and two pulleys are arranged in series directly below the gap. A wire rope steadying device for a grab bucket cart, etc., characterized in that the above two pulleys are arranged diagonally above and below.