RU2409512C1 - Method of installing and replacing equalising ropes of lifting installations - Google Patents

Abstract

FIELD: transport.

SUBSTANCE: proposed method comprises installing the winch of rope replacement with rope to be suspended, and installing lifting vessels nearby extreme receiving platforms. Then, ropes to be installed and replaced are connected by clips and passed in the shaft sump section to be locked on mounting bridge for replaced rope end to be cut. Now, replaced rope end is disconnected from the bottom lifting vessel and carried on the winch for rope replacement, end of the rope to be suspended is connected to the winch, vessels are transferred into opposite extreme position. One rope is mounted and that to be replaced is removed.

EFFECT: ease of rope replacement.

8 dwg

Description

The invention relates to the mining industry, and in particular to devices and methods for hanging and changing ropes.

There is a method of hanging and changing ropes of hoisting machines [1], according to which the hanging ropes are lowered with simultaneous dismantling of the replaced ropes, which is achieved by placing hoists on the lower horizon for receiving ropes guided by special pulleys, and above using ropes reels, a friction winch , devices for regulating the traction ability of the pulley.

The disadvantages of this method are:

- the use of a large number of additional equipment;

- the difficulty in synchronizing the work of coils in the head, winches on the horizon, a friction winch and a friction pulley of a lifting machine;

- the difficulty of lowering the flat balancing ropes due to the design features of this type of ropes, determining the order of their multilayer winding and winding under load from the winches;

- the impact on the replaced rope of variable magnitudes of torques when replacing round-strand ropes, due to the difference in the load perception of the replaced and attached ropes;

- the hanging rope experiences additional loads when hinged, which leads to its preliminary drawing, while modern rope manufacturers supply, if necessary, pre-drawn cables, in which the preliminary drawing process is strictly maintained both in magnitude and in frequency of the pulling force exerted on the rope.

The closest in the set of essential features and the achieved positive effect to the claimed method is a method for individually replacing the head ropes of a multi-rope hoist [2], according to which the hanged rope on the transport coil is installed at the upper receiving platform, and the lifting vessels of the multi-rope hoist in extreme positions at the upper and lower receiving areas. The end of the hanging rope is fed through the friction pulley and is attached to the lifting vessel located at the upper receiving platform, after which the lifting vessels are moved to another extreme position by rotating the friction pulley. In this case, the hanging rope and the ropes above the lowering lifting vessel are fastened by the device for clamping the ropes. At the lower receiving platform, a replaceable rope is detached from the lifting vessel, and the end of the hanging rope is put in its place in the thimble. At the same time, a replaceable rope is pinched on the mounting bridge at the upper receiving platform, after which this cable is detached from the lifting vessel at the upper receiving platform, and the end of the hanging cable is put in its place. The replaceable rope is released from the clamp. The mounting bridge is dismantled, the lifting vessels begin to move to another extreme position. At the same time, devices for clamping the ropes are gradually dismantled, and the replaced rope is wound onto a transport reel.

The disadvantages of this method are:

- an increase in the pressure of the ropes on the friction pulley due to the placement of the hanging rope on it during the first movement of the vessels;

- the difficulty of eliminating the difference in linear movements of the hanging and replaced rope due to the differences in the placement of these ropes on the friction pulley;

- asymmetric load distribution between the ropes when moving vessels;

- preservation in the hanging rope when moving along the trunk of the torques due to the connection of the ropes along the entire length of the devices for clamping the ropes, which is undesirable for some types of ropes;

- the presence in the method of a significant number of operations for moving the lifting vessels with the installation and removal of rope clamping devices that require synchronization of the operation of the lifting installation and the transport coil, which increases the risk of safe work.

In connection with the general direction in the mining industry to increase mining depths and, as a result, to a more rational use of the capabilities of lifting equipment, there is a need to develop optimal methods for replacing ropes, which save time and labor.

The objective of the invention is to reduce the duration of the process of hanging and changing ropes through the use of their traction and guiding properties to form a loop and eliminate the possibility of its twisting in the sump.

The technical result of the proposed method of hitching and changing the balancing ropes of lifting installations is achieved by winding the replaceable rope using the traction ability of the lifting machine while pulling the hanging rope, attaching one end of the hanging rope to the towing device of the first vessel, and its other end to the towing device of the second vessel after driving, looping in the sump. According to the invention, before pulling the entire hinged rope into the trunk, it is connected over the mounting bridge by successively mounted clamps to the replaceable rope using the movement of the lifting vessels to form a balancing rope loop in the lower part of the trunk, after which a support clip is mounted on the ropes connected by the clamps, the loop of the replaceable rope is cut above mounting bridge, then the end of the rope to be replaced under the lower lifting vessel is wound onto a rope change winch (SNK), in its place they dance the end of the hanging rope, and the end of the section of the removable rope forming a loop, start up on the SNK, when it is unrolled, the clamps are removed as they exit above the mounting bridge, then the end of the replaceable rope attached to the upper lifting vessel on the SNK is started and the winding is performed simultaneously interchangeable and pulling the hanging ropes.

According to the invention (see figure 1) SNK 1 with a hanging rope and SNK 2 for winding a replaceable rope are placed on the lower receiving platform 3, after which the mounting bridge 4 is mounted. The lifting vessel 5 is set up at the lower receiving platform 3, and the lifting vessel 6 is in copra. A pulley 7 is mounted, through which the end of the hinged rope 8 is bypassed. The end of the hinged rope 8 is connected by a clamp 9, which is identical to that used in the towing devices of the lifting vessels, to the removable rope 10. By moving the lifting machine (see Fig. 2), the lifting vessel 6 is lowered, and the lifting vessel 5 rises. The interchangeable rope sets in motion. At the same time, the hanging rope 8 is pulled by the movement of the lifting machine with SNK 1. At the same time, it is attached by clamps 11 to the replaceable rope 10. The movement of the lifting machine stops (see Fig. 3) when the end of the attached rope reaches a height sufficient to be fixed in the hitch under the lifting vessel 5. A support clamp 12 is installed on the removable and hanging ropes on the mounting bridge 4. The replaceable rope is cut above the clamps 11 and the support clamp 12. The lower end 13 of the upper part of the replaceable rope through the pulley 14 lifting vessels are returned to the original position (see FIG. 4) on oditsya SNK 2. Movement of the lifting machine. The replaceable rope 10 under the lifting vessel 5 is wound onto SNK 2. From the towing device 15 of the lifting vessel 5, the end 16 of the attached rope is fixed to the place of the dismantled end of the replaceable rope. The end 17 of the removable rope fixed on the mounting bridge is drawn through the pulley 14 and attached by a clamp 18 to the end of the removable rope on the SNK 2. The support clamp 12 is dismantled (see Fig. 5). With the simultaneous movement of SNK 1, SNK 2 and the lifting machine, the lifting vessels move to positions when the entire cut-off lower part of the replaceable rope 10 will be wound on SNK 2. At the same time, the clamps 11 are removed from the removable and hanging ropes above the mounting bridge. The cut end 19 of the replaceable rope of the lifting vessel 6 is connected by the clamp 20 to the end 21 of the replaceable a rope for CPC 2 (see FIG. 6) of synchronous motions CPC 1, CPC 2 and hoist lifting vessels are moved in the direction of copra and the lower receiving area. A support clip 12 is installed on the hinged rope. With SNK 1, the end 22 of the hinged rope is wound (see Fig. 7). From the towing device of the lifting vessel 6, the end 23 of the replaceable rope is dismantled. In its place (see Fig. 8) the end 24 of the hanging rope is mounted. The support clamp 12 and the mounting bridge 4 are dismantled.

When testing the proposed method of linking and changing the balancing ropes of hoisting installations on hoisting machines TsSh3.25 × 4 rock-laying shaft and MK5 × 4, TsSh4 × 4 cage shaft No. 3 of the Taimyrsky mine, having depths of about 1,500 meters, of the Polar Division of OJSC MMC Norilsk Nickel ”, significant savings were obtained in time (about 12 hours) and resources (auxiliary winches were not used) in the course of work.

The inventive method allows to increase the reliability of the process of hanging and changing balancing ropes, reduce the amount of attraction of auxiliary equipment and tools, and can be easily adapted without cost to existing projects for the replacement of ropes.

Information sources

1. USSR author's certificate No. 707881, cl. B66B 19/02, 1980

2. USSR copyright certificate No. 1158472, cl. B66B 19/02, 1982

Claims (1)

The method of hanging and changing the balancing ropes of hoisting installations, including winding the rope to be replaced using the towing capacity of the hoisting machine while pulling the hanging rope, attaching one end of the hanging rope to the towing device of the first vessel, and its other end to the towing device of the second vessel after they are driven, formation hinges in the sump, characterized in that before pulling the entire hanging rope into the trunk above the mounting bridge they are connected in series poured clamps with a replaceable rope using the movement of lifting vessels to form a loop of a balancing rope in the lower part of the barrel, after which a support clamp is installed on the ropes connected by clamps, the loop of the replaceable rope is cut off over the mounting bridge, then the end of the replaceable rope under the lower lifting vessel is wound onto a shift winch weighed ropes, in its place attach the end of the hanging rope, and the end of the section of the removable rope, forming a loop, lead to the winch of changing the rope weights, with atyvanii which produce lifting clamps as they are released on the mounting bridge, after which the plant a removable end of the rope attached to the upper lifting vessel, the winch rope hitch change and produce simultaneous winding-hang a removable and pulling ropes.

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