SU740678A1 - Rope drum of mine hoist - Google Patents

Description

The invention relates to lifting means.

Known rope drum mine lifting machine containing jammed and adjustable part, made with cutting under the rope

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in this drum, the surface of the hinged part has a screw thread for the rope, the surface of the wedged part near the cut has an annular groove and then also a screw thread. The rope of the rear part during winding intersects the incision of the drum, and the rope of the seized part can be wound only up to the section, not passing through it.

With this design, the drum surface is not fully used, since between the rolls there remains an empty section of the drum with a width equal to or greater than the distance from the beginning of winding the rope of the re-mounted part to the section of the drum. This limits the tightness of the drum.

The aim of the invention is to increase the cable capacity of the drum without increasing its dimensions.

For this, each part of the drum is provided with a guide protrusion, one end of which is located in the plane of the cut, and the other end adjoins the cutting ridge.

In addition, the height directed toward the protrusion exceeds the height of the ridge of the groove joined to it.

FIG. 1 shows a general view of the proposed drum in FIG. 2 - section AA; in fig. 3 - section BB; in fig. 4 - view B; in Fig. winding on the drum of the rope of the seized part when going through 15 times cut; in fig. 6 - winding of the rope of the adjustable part when passing through the incision.

The drum contains jammed 1 and adjustable 2 parts, on cylindrical surfaces of which from external flanges 3 in the direction of cut 4 there is a screw cut 5 for laying ropes 6 and 7. The screw cut ends approximately at a distance of one diameter of the rope from the cut. The further surface of the drum at the cut is made cylindrical at the level of the bottom of the cut. On this surface there are directions 30

The protrusions are 8 and 9. One end of each protrusion coincides with the cut plane, and the second one is adjacent to the cutting ridge.

The angle of elevation of the protrusion to the cut plane should be as large as possible in order to allow the greatest angle of rotation of one part of the drum relative to the other when adjusting the lengths of the ropes that are unrolled from the drum, for example, when they are pulled or chopped for testing. Therefore, the elevation angle of the protrusion must be greater than the elevation angle of the screw thread.

At the same time, it should not be greater than the value at which the angle between the protrusion and the string of rope connected to it is the maximum permissible value according to the safety rules.

Since the rope and the protrusion meet at a large angle against the usual winding, in order to improve the conditions for the passage of the ropes through the cut, the guides, the protrusions have a height greater than the height of the ridge of the screw thread.

When winding the rope b fixed on the wedged part, it is first placed in a screw thread 5, and then reaching the protrusion, is deflected by the protrusion 8 of the stuck drum to the recess 4 of the drum. Passing through the cut, the rope meets the protrusion 9 of the reversible part of the drum and then is placed in the screw thread of the reversible part. When the drum rotates in the opposite direction, the rope b is twisted off the drum. At the same time, the rope 7 fixed on the adjustable part is wound onto the drum.

When winding the rope 7, it is initially laid in the screw thread of the re-mounted part. Then, having reached the protrusion 9, passes through the incision and is guided by the protrusion 8 into the screw cutting of the jammed part of the drum. When the drum is rotated to the other side, the rope 7 is twisted off the drum, and the rope 6 is wound onto the drum, as indicated above.

The use of the proposed shaft shaft hoisting machine will allow the rope to pass through the incision and then winding it onto the drum surface located behind the incision. This creates the possibility, through the rational use of the winding surface of the drum, to increase the lifting height without increasing the dimensions of the drum.

Claims (2)

1. A rope drum of a mine hoist, comprising wedged and moving parts, cut with a rope, characterized in that, in order to increase the rope capacity without increasing its dimensions, each part of the drum is provided with a guide lug, one end of which is located in the section plane, and the other is matched with a cut rim. 2. A drum according to Claim 1, characterized in that the height of the guide protrusion exceeds the height of the ridge cut adjacent to it. Sources of information taken into account in the examination 1. Coll. Gornoode and steel-making equipment, TSINTIMASH, M., 1959, p. 34 (prototype).