JP6567734B1 - Elevator rope connection method - Google Patents

Abstract

The time required for connecting an elevator rope is shortened. An elevator rope connecting method according to an embodiment includes a step of drawing a plurality of strands from each of a first rope and a second rope, and each strand drawn from the first rope is mutually The step of fixing the ends of the plurality of strands so that the ends of the strands constituting the strands are in close contact with each other and the strands drawn from the second rope are joined together. The step of fixing the tip portions of the plurality of strands so that the tip portions of the strands constituting the strand are in close contact with each other, and weaving the strand of the first rope and the strand of the second rope, Connecting the first rope and the second rope. [Selection] Figure 4

Description

  Embodiments described herein relate generally to an elevator rope connection method.

  When the rope connecting the elevator car and the counterweight is damaged or during regular maintenance, it is necessary to replace the rope. Generally, when replacing a rope used in an elevator, the old rope is recovered by connecting the new rope to the old rope installed and winding the old rope along the rope construction path. A new rope will be installed.

  As a method of connecting old and new ropes, a method of connecting old and new ropes by weaving strands forming old and new ropes is known.

Japanese Patent Laid-Open No. 4-327383

  The strands forming the rope are formed from a plurality of strands that are twisted together. When the strands are knitted, the strands forming the strands may be separated. When the strands are knitted in this state, some of the broken wires protrude from the knitted strand. When a rope is exchanged with some strands protruding from the strand, the protruding strands may get entangled in the rope construction path. In order to prevent this, it is necessary to knit the strands by putting the separated wires together. Since each of the strands is thin and hard, there is a risk of piercing the finger when braiding the strands. Therefore, it took a lot of time to connect the old and new ropes by weaving the strands while aligning the separated wires.

  This invention is made | formed under the above-mentioned situation, and makes it a subject to shorten the time required for the connection of the rope for elevators.

The method for connecting elevator ropes according to the embodiment of the present invention connects an existing first rope and a new second rope when exchanging ropes formed from a plurality of more connected strands. This is a rope connection method. The elevator rope connection method according to the embodiment includes a step of drawing a plurality of strands from each of the first rope and the second rope, and strands that are combined with each other for each strand drawn from the first rope. The strands are joined together for each strand drawn from the second rope and the step of fixing the distal ends of the strands so that the tips of the strands constituting A step of fixing the tip portions of the plurality of strands so that the tip portions of the plurality of strands are in close contact with each other, and a first rope strand and a second rope strand are knitted into the first rope when a step of connecting the second rope, when the first rope and the second rope are coated with a resin, the resin coating the first rope and the second rope removal Including that a step. In the removing step, the resin of the specified length is left at the tip of the first rope and the second rope, and the length of the resin specified in the opposite direction from the tip of the first rope and the second rope. Remove the resin.

It is a figure for demonstrating the exchange operation | work of the rope for elevators which concerns on one Embodiment. It is a figure for demonstrating the structure of the rope for elevators. It is a figure for demonstrating the structure of a strand. It is a figure for demonstrating the structure of a strand. It is a flowchart for demonstrating the connection method of the rope for elevators which concerns on one Embodiment. It is a figure for demonstrating the connection method of the rope for elevators which concerns on one Embodiment. It is a figure for demonstrating the connection method of the rope for elevators which concerns on one Embodiment. It is a figure for demonstrating the connection method of the rope for elevators which concerns on one Embodiment. It is a figure for demonstrating the connection method of the rope for elevators which concerns on one Embodiment. It is a figure for demonstrating the connection method of the rope for elevators which concerns on one Embodiment. It is a figure for demonstrating the connection method of the rope for elevators which concerns on one Embodiment. It is a figure for demonstrating the connection method of the rope for elevators which concerns on one Embodiment.

(Embodiment 1)
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  First, the overall configuration of the elevator apparatus 100 will be described with reference to FIG. As shown in FIG. 1, the elevator apparatus 100 includes a car 2 and a counterweight 3 disposed in a hoistway 101 surrounded by a hoistway wall 102. Above the hoistway 101, a hoisting machine 1 and a control device 9 for driving an existing rope 4 (first rope) or a new rope 5 (second rope) for raising and lowering the car 2 are installed. A machine room 103 is provided. The control device 9 controls the entire elevator device 100, and controls the hoisting machine 1 according to a landing call or a car call to land the car 2 on the floor where the call was made. In the elevator apparatus 100, an entrance / exit 105 leading to the car 2 in the hoistway 101 is provided at a landing provided on the floor 104 of each floor of the building.

  Next, an outline of an elevator rope replacement operation will be described with reference to FIG. The existing rope 4 connects the elevator car 2 and the counterweight 3 via the hoisting machine 1. The rope 4 is, for example, a rope to be exchanged that has been damaged or deteriorated. When the rope 4 is exchanged, a new rope drum 6 around which a new rope 5 is wound and an old rope drum 8 around which the rope 4 is wound are prepared at an entrance 105 of an arbitrary floor. The upper surface of the car 2 is stopped so as to be at the same position as the floor of the floor on which the new rope drum 6 is prepared, and the rope 4 is separated from the car 2 and the counterweight 3. One end of the rope 4 is connected to the old rope drum 8, and the other end is connected to the rope 5 wound around the new rope drum 6. By winding the rope 4 around the old rope drum 8, the rope 5 is installed at the position where the rope 4 was. The cage 2 and the counterweight 3 are connected to the rope 5 to complete the exchange of the rope.

  Next, the configuration of the ropes 4 and 5 will be described. FIG. 2 shows a cross-sectional view of the ropes 4 and 5. As shown in FIG. 2, the ropes 4 and 5 are formed of a core network 12, a strand 15, and a coating 11. In the example shown in FIG. 2, the ropes 4 and 5 are formed from eight strands 15. 3A and 3B are sectional views of the strand 15. The strand 15 is formed of a plurality of strands 16 that are more closely combined. The strand 16 is formed of a hard material such as carbon steel. The thickness and the number of the strands 16 are not limited. In the example shown in FIGS. 3A and 3B, the strand 15 is formed of 19 strands 16. As shown in FIG. 2, the coating 11 covers the periphery of the plurality of strands 15. The covering 11 is made of a resin such as vinyl. The coating 11 prevents the twisted strands 15 and the strands 16 from breaking apart. L1 shown in FIG. 2 is the diameter of the ropes 4 and 5. L2 is the diameter of the strand 15.

  Next, a method for connecting the rope 4 and the rope 5 will be described with reference to FIG. First, the covering 11 of the rope 4 and the rope 5 is removed (step S11). At this time, as shown in FIG. 5, the covering 11 a is left with a specified length at the distal ends of the ropes 4 and 5. Specifically, when the length of the coating 11a to be left is L3, the coating 11a is left so that L3 is about 10 to 30 times the diameter L2 of the strand 15. L3 is, for example, about 20 mm to 60 mm.

  If the coating 11a is not left, the joined strands 15 and strands 16 may be separated, and the operation described later may be difficult. If L3 is too short, when the target strand 15 is pulled out from the remaining coating 11a, other strands 15 may be pulled out together. If L3 is too long, it becomes difficult to draw out the target strand 15 from the remaining coating 11a. Experience has shown that working efficiency can be improved when L3 is about 10 to 30 times longer than L2.

  The length L4 of the coating 11 to be removed is, for example, 30 cm to 70 cm. The longer L4 is, the higher the connection strength of the ropes 4 and 5 can be. On the other hand, the longer L4 is, the longer the work time is. Therefore, the length of L4 is determined according to the load applied to the connecting portions of the ropes 4 and 5.

  Next, a plurality of strands are pulled out from each of the ropes 4 and 5 (step S12). Specifically, one of the plurality of strands 15 that are more combined is pulled out from the remaining coating 11a. When the strand 15 is the even-numbered strand 15 drawn (step S13: Yes), the drawn strand 15 is cut (step S14). Specifically, the strand 15 drawn out at the position 11b where the coating 11 shown in FIG. 6 is removed is cut. On the other hand, when the strand 15 is an odd-numbered strand 15 drawn (step S13: No), the process proceeds to step S15.

  Since the drawn strand 15 is not covered with the coating 11a, when the tip portion of the strand 15 is not processed, the strands 16 forming the strand 15 may be separated as shown in FIG. In order to prevent this, for each strand 15 drawn out from the rope 4, the tip portions of the plurality of strands 16 are joined together so that the tip portions of the plurality of strands 16 constituting the strand 15 are in close contact with each other. Fix each other. Next, for each strand 15 drawn out from the rope 5, the tips of the plurality of strands 16 are fixed so that the tips of the strands 16 that are joined together to form the strand 15 are in close contact with each other. . (Step S15). Specifically, as shown in FIG. 7, for each strand 15 drawn from the rope 4, the end portion of the strand 15 is covered with a heat-shrinkable tube 40, and the heat-shrinkable tube 40 is heated to thereby form the strand 15. The tip portions of the plurality of strands 16 are fixed so that the tip portions of the plurality of strands 16 that are formed are in close contact with each other. The same processing is performed for the rope 5.

  When the strand 15 that has not been processed in step S14 or step S15 remains (step S16: Yes), the processing from step S12 to step S16 is repeated. On the other hand, when the strand 15 which has not been processed in step S14 or step S15 does not remain (step S16: No), the process proceeds to step S17.

  When the processing of all the strands 15 is completed (step S16: No), the tip portions of the ropes 4 and 5 are in a state as shown in FIG. Next, the coating 11a left at the tip of the core mesh 12 of each of the ropes 4 and 5 is removed.

  Next, as shown in FIG. 9, the core 12 of the rope 5 (or the rope 4) is cut at the position 11b where the covering 11 is removed (step S17). Next, the rope 4 and the rope 5 are connected by weaving the strand 15 drawn from the rope 4 and the strand 15 drawn from the rope 5 (step S18). Specifically, as shown in FIG. 10, the remaining strands 15 of the ropes 4 and 5 are knitted using the remaining core 12 as a core. Since the distal end portion of the strand 15 is covered with the heat shrinkable tube 40, the strand 16 of the distal end portion of the strand 15 does not fall apart when the strand 15 is knitted. Therefore, the efficiency of the operation of weaving the strands 15 can be improved.

  Next, a portion where the rope 4 and the rope 5 are connected is covered (step S19). Specifically, the tip of the strand 15 covered with the heat shrinkable tube 40 is covered with a stretchable taping 30. At this time, as shown in FIG. 11, the diameter L5 of the portion covered with the taping 30 is set to be equal to or smaller than the diameter L1 of the ropes 4 and 5. As a result, when the rope 4 is wound around the old rope drum 8, it is possible to prevent the connecting portions of the ropes 4 and 5 from being caught on the construction path of the hoisting machine 1 or the like. With the above operation, the connecting operation of the ropes 4 and 5 is completed.

(Modification 1)
In the above description, the case where the distal end portion of the cut strand 15 is covered with the heat shrinkable tube 40 has been described. However, it is not necessary to limit the method for preventing the strands 16 forming the strands 15 from falling apart. For example, for each strand 15 drawn from the ropes 4 and 5, the strand 15 is covered with a rubber cap so that the tips of the strands 16 constituting the strand 15 are in close contact with each other. You may make it use for fixing the front-end | tip parts. In this case, as shown in FIG. 11, it is necessary to select the rubber cap so that the diameter L5 of the portion covered with the taping 30 is equal to or less than the diameter L1 of the ropes 4 and 5. Moreover, you may fix the front-end | tip part of the strand 15 with a vinyl tape etc.

(Modification 2)
In addition, for each drawn strand 15, a plurality of strands 16 are used by using a resin such as paint, adhesive, rubber, or plastic so that the tips of the strands 16 constituting the strand 15 are in close contact with each other. You may make it fix the front-end | tip parts. When fixing the front-end | tip part of the strand 15 with resin, resin osmose | permeates between the strand 16 and the strand 16, and strand 16 is fixed.

(Modification 3)
Alternatively, the ends of the strands 16 may be melted by arc welding or the like to fuse the strands 16 together. Moreover, you may weld the front-end | tip part of the strand 15 with a solder etc. In this case, as shown in FIG. 11, it is necessary to pay attention so that the diameter L5 of the portion covered with the taping 30 is equal to or smaller than the diameter L1 of the ropes 4 and 5.

  As described above, in the elevator rope connection method according to the present embodiment, the step of fixing the tip portions of the plurality of strands 16 so that the strands 16 at the tips of the strands 15 are not separated. Provide. Thereby, the operation | work which knits the strand 15 of the ropes 4 and 5 becomes easy, and the time required for the connection of the rope for elevators can be shortened.

  Further, when the covering 11 of the ropes 4 and 5 is removed, the covering 11 a is left at the tip of the strand 15. Thereby, the strand 15 can be pulled out one by one from the remaining coating 11a. The strands 15 other than the drawn strands 15 are maintained in a bundled state by the remaining coating 11a. Therefore, the strands 16 of the other strands 15 are not separated during the process of hardening the leading end portion of the drawn strands 15.

  Note that the flowchart shown in FIG. 4 is an example of a work procedure, and need not be limited to this. For example, the covering 11 is deleted with the length L3 shown in FIG. And the front-end | tip parts of the strand 16 of all the strands 15 are fixed. Thereafter, the covering 11 is deleted with a length L4 shown in FIG. Then, every other strand 15 is cut. The ropes 4 and 5 are connected by weaving the remaining strands 15 of the ropes 4 and 5. Also in this work procedure, it is possible to prevent the strands 16 from being separated by providing a step of fixing the tip portions of the strands 16, and the work time for knitting the strands 15 of the ropes 4 and 5 can be shortened. .

  In the above description, the case where the ropes 4 and 5 having the coating 11 are connected has been described. Even when a rope that does not have the coating 11 is connected, it is possible to prevent the strands 16 from being separated when the strands 15 are cut or knitted by providing a step of hardening the ends of the strands 16. Thereby, the work time which braids the strand 15 of the ropes 4 and 5 can be shortened.

  In the above description, the case has been described in which the length L3 of the coating 11a remaining at the tip of the strand 15 is about 10 to 30 times the diameter L2 of the strand 15. The force that the strands 15 and the strands 16 tend to break apart varies depending on the type of rope. The length L3 of the coating 11a to be left at the tip of the strand 15 may be determined based on the force with which the strand 15 and the strand 16 tend to be separated.

  Although several embodiments of the present invention have been described, these embodiments have been presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1 ... Hoisting machine 2 ... Riding car 3 ... Balance weight 4 ... Rope 5 ... Rope 6 ... New rope drum 8 ... Old rope drum 11 ... Coating | cover 11a ... Coating | cover left on the front-end | tip part of a strand 12 ... Heart net 15 ... Strand 16 ... Wire 30 ... Taping 40 ... Heat-shrinkable tube 100 ... Elevator device 101 ... Hoistway 102 ... Hoistway wall 103 ... Machine room 104 ... Floor 105 ... Entrance / exit

Claims (7)

A rope connection method for connecting an existing first rope and a new second rope when exchanging a rope formed from a plurality of strands that are more combined,
Extracting a plurality of the strands from each of the first rope and the second rope;
The step of fixing the tip portions of the plurality of strands so that the strands pulled out from the first rope are closely joined to each other and the tip portions of the strands constituting the strand are in close contact with each other. When,
For each of the strands drawn out from the second rope, the tip portions of the plurality of strands are fixed so that the tip portions of the plurality of strands constituting the strand are closely joined to each other. Process,
Knitting the strand of the first rope and the strand of the second rope to connect the first rope and the second rope;
If the first rope and the second rope is covered with a resin, it saw including a step of removing the resin coating the first rope and the second rope,
In the removing step,
Leaving the resin of the designated length at the tip of the first rope and the second rope, and of the length designated in the opposite direction from the tip of the first rope and the second rope Remove the resin,
How to connect the elevator rope. Each time the one strand is pulled out from the first rope, the tip portions of the plurality of strands are fixed so that the tip portions of the plurality of strands constituting the drawn strand are in close contact with each other. Process,
Each time the one strand is pulled out from the second rope, the tip portions of the plurality of strands are fixed so that the tip portions of the plurality of strands constituting the drawn-out strand are in close contact with each other. Process,
The method for connecting elevator ropes according to claim 1. For each of the strands drawn from the first rope, the tip of the strand is covered with a heat-shrinkable tube, and the heat-shrinkable tube is heated so that the tips of the strands constituting the strand are Fixing the tip portions of the plurality of strands so as to be in close contact with each other;
For each strand drawn from the second rope, the tip of the strand is covered with a heat-shrinkable tube, and the heat-shrinkable tube is heated so that the tips of the strands constituting the strand are Fixing the tip portions of the plurality of strands so as to be in close contact with each other;
The method for connecting an elevator rope according to claim 1, comprising: For each of the strands drawn from the first rope, the tip of each strand is covered with a rubber cap, and the plurality of strands of the plurality of strands are in close contact so that the tips of the plurality of strands constituting the strand are in close contact with each other. A step of fixing the tips,
For each of the strands drawn from the second rope, the tip of each strand is covered with a rubber cap, and the plurality of strands of the plurality of strands are in close contact so that the tips of the plurality of strands constituting the strand are in close contact with each other. A step of fixing the tips,
The method for connecting an elevator rope according to claim 1, comprising: For each strand drawn from the first rope, fixing the tip portions of the plurality of strands with resin so that the tip portions of the plurality of strands constituting the strand are in close contact with each other;
For each strand drawn from the second rope, fixing the tip portions of the plurality of strands with resin so that the tip portions of the plurality of strands constituting the strand are in close contact with each other;
The method for connecting an elevator rope according to claim 1, comprising: Fixing the tip portions of the plurality of strands by welding so that the tip portions of the plurality of strands constituting the strand are in close contact with each strand drawn from the first rope;
Fixing the tips of the plurality of strands by welding so that the tips of the strands constituting the strand are in close contact with each strand drawn from the second rope;
The method for connecting an elevator rope according to claim 1, comprising: The specified length is 10 to 30 times the length of the diameter of the strand;
The connection method of the rope for elevators as described in any one of Claim 1 to 6 .

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