JP2803524B2 - Elevator main rope trimming method and device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for trimming a main rope of a 1: 1 roping elevator.

[0002]

2. Description of the Related Art FIG. 7 is a sectional view of an elevator hoistway showing a conventional rope trimming method, in which (1) is a hoistway, (2) is a landing opening, (3) is a machine room, (4) is the main rope (1
The through-hole 0) and the hoisting machine 5 supported by the machine base 7 drive the sheave 6 around which the main rope 10 is wound. (8) is a car, (9) is a counterweight, and this basket and the counterweight are connected to both ends of the main rope (10) via end connecting members (11), respectively. (12) is a shock absorber outer cylinder of a counterweight, and (13) is a temporary support material, which is fixed to the side of the shock absorber outer cylinder (12) by wire or the like.

Next, a description will be given of a conventional main rope trimming method. In FIG. 7, a gap (a) that allows a worker to move in and out of the car and to move in and out of the car with respect to the landing (2) near the top floor of the hoistway (1) is formed in the car (8). The counterweight (9) on the opposite side is supported by a temporary support (13) below the hoistway (1). Next, in the machine room (3), the sheave (6) of the hoisting machine (5) and the car-side main rope (10) are tied up with a tying device (14) for preventing slippage. Next, an appropriate lifting rope (15) is erected on the machine base (7), a slinging wire (16) is hung, and the main rope through hole (4) in the machine room floor is passed. The chain block (17) is suspended from the lower loop of the wire (16), and the upper end of the slinging wire (18) hung on the car upper beam is suspended from the chain block (17).

Next, when the car (8) is lifted by operating the chain block (17), the main rope (10) between the sheave (6) and the car (8) is loosened as shown in FIG. Therefore, the main cable (10) is cut so as to have a predetermined cut amount near the end connector (11), and the cut main cable is connected to the end connector (11) of the car (8) again. After that, loosen the chain block (17) and tighten the main cable (10) to adjust the tension, then tighten the straps (14), lifting rope (15), slinging wire (16),
Remove the sling wire (18) and chain block (17). Then, the car (8) is lowered and the temporary support (13) below the hoistway (1) is removed.

[0005]

Since the conventional main rope trimming method is performed according to the above-described operation procedure, two or more workers are required to set the support material at the lower part of the hoistway and to operate the car position. In addition, there is a danger if the cooperation is not completely performed because the work is divided into upper and lower parts. In addition, the work area is wide in the machine room, the upper part of the car and the lower part of the hoistway, so that it takes time to move, and the work content is diversified, so that the number of work steps is large.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a method and an apparatus which allow one worker to safely and quickly cut a predetermined main rope. Aim.

[0007]

According to a method of cutting down a main rope of an elevator according to the present invention, a gripper is mounted on a main rope located at an appropriate height from one of end couplings, and the gripper is mounted on the main rope. The main configuration is to suspend a chain block hanging hook, lift the car or the counterweight by operating the chain block, relax the main rope below the gripper, and perform a predetermined trimming. .

The elevator main rope trimming device according to the present invention holds a gripper which grips and tightens a main rope higher than a portion to be trimmed, and lifts a car or a counterweight suspended from the gripper with the gripper as a base point. The main configuration is provided with a chain block and an end connector for connecting the main rope ends cut off to the car or the counterweight.

[0009]

According to the method and the apparatus for trimming a main rope of an elevator according to the present invention, a gripper is mounted on a main rope at a predetermined height from an end connector, and a hook for hanging a chain block is suspended from the gripper. Since the car is lifted by operating this chain block, it is not necessary to support the counterweight at the lower part of the hoistway, tie the main rope and sheave in the machine room, and erection and slinging of lifting ropes and slinging. Thus, the predetermined length of the extended main rope is safely and quickly cut off.

[0010]

【Example】

Embodiment 1 FIG. An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an overall side view showing a method and an apparatus for trimming a main rope according to an embodiment of the present invention, and FIG. 2 is a sectional view taken along line II-II in FIG. In the figure, (1) is the hoistway, (3) is the machine room, (4) is the through hole of the main rope (10), (5) is the hoisting machine supported by the machine base (7), A sheave with (10) wound around it (6)
It is for driving. (8) is a car, (9) is a counterweight, and this basket and the counterweight are connected to both ends of the main rope (10) via end connecting members (11), respectively. The end connecting member (11) may be a conventionally used one, for example, may be one that connects an elevator main rope using a wedge type fastener.

(20) is a gripper for temporarily gripping a portion of the main rope (10) higher than the portion to be cut off, and (21) is a pair of suspension units of a chain block attached to both ends of the gripper. A shackle (17) is a pair of chain blocks suspended from the shackle via hooks (17a), and hoists the basket (8) with a pair of slinging wires (18).
The pair of slinging wires (18) is held on the upper beam (8a) provided on the upper part of the vertical column (8b) on both sides of the car, so that the left and right balance is maintained. FIG. 3 is a side view of the gripper (20), FIG.
Is a plan view of the gripper (20). In the figure, (20a) (20b)
(20c) is a gripping piece, which has a gripping groove (20e) of the main rope (10) hanging in a parallel state at a position facing each gripping piece. The pair of holding grooves (20e) and the gap (g) match the size of the main rope (10). (20d) is a tightening tool consisting of bolts and nuts.
It is firmly gripped without permanent deformation or damage . The center gripping piece (20a) of the gripping pieces protrudes in a flange shape on both sides of the gripping pieces (20b) and (20c) overlapping with the gripping piece (20a). (21) is linked.

The method of the present invention implemented using the above apparatus will be described. First, each of the gripping pieces (2) of the gripper (20) is attached to the main rope (10) located at an appropriate height from one end connecting device (the end connecting device of the car in this example) of either the car or the counterweight.
0a) (20b) (20c)
Tighten. Next, a shackle (21) is set in the hole (20f), a suspension hook (17a) of the chain block (17) is suspended on the shackle, and a slinging wire (18) is attached to the upper beam (8a) of the car. Hanging, operating the chain block (17), lifting the car, relaxing the main rope (10) between the gripper (20) and the car (8) to a predetermined cut length or more, and lifting the main rope (10). Cut at a predetermined position near the coupler. Next, the terminal of the trimmed main cable (10) is connected again to the end connector (11), the chain block (17) is loosened, and the tension of the main cable (10) is reduced by the end connector (11). Adjusting sling wire (18), chain block (17), shackle
(21) Remove the gripper (20) to complete the work. In addition,
In order to increase the safety during the work, the cutting for cutting off the main rope (10) should not be performed at the same time. In other words, if cutting and reconnection to the end connector (11) are performed one by one, even if the gripping force of the main rope of the gripper (20) decreases over time,
(8) and the like can be prevented beforehand.

As described above, the end connector (1) on the car (8) side
The gripper (20) and the chain block (17) were set immediately above the (1), but these were connected to the end connector (1) on the counterweight (9) side.
The same effect can be obtained even if it is set directly above 1).
That is, if the above operation is performed, the conventional hoistway
Support for counterweight (9) at lower part of (1), machine room (3)
This eliminates the need for slewing and setting the main rope (10) on the sheave (6) to hold and restrain the skid from slipping, thereby enabling one-person work.

Embodiment 2 FIG. In the above embodiment, the chain block (17) is suspended on the shackle (21) connected to the flanges on both sides of the gripper (20). However, as shown in FIGS. 22) is separated and independent for each main rope (10) as shown by a broken line, and a retainer (23) is continuously provided above the gripper (22) to hold the main rope (10). Alternatively, both ends (24a) of the suspension rod (24) may be inserted into both sides and fixed with nuts. This suspension rod (24) is bent at the center in a V shape,
A suspension (24b) for the chain block (17) is provided. The gripper (22) has a semicircular groove (20
When e) becomes worn, only the worn parts need to be partially replaced, so that the replacement cost of the parts is reduced as compared with the first embodiment. The retainer (23) is divided into a central part (23a) and parts (23b) and (23c) on both sides, and is fastened with bolts and nuts (23d). It may have a main rope holding function similar to that described above, or may not have a main rope holding function as a semicircular groove having a diameter equal to or larger than the main rope diameter.

[0015]

As described above, according to the present invention, a gripper is mounted on a main rope located at an appropriate height from one of the end couplings, and a hook for hanging a chain block is attached to the gripper. And operate the chain block to lift the car or the counterweight, to relax the main rope below the gripper, and to perform a predetermined truncation. A gripper that grips and tightens the main rope, a chain block suspended from the gripper to lift a car or a counterweight, and an end connecting the main rope end cut to the car or the counterweight. With the connector, the work of holding and supporting the counterweight at the lower part of the hoistway, setting up slinging in the machine room, or holding and holding the main rope on the sheave as in the past is unnecessary. Work is to quickly perform effect.

[Brief description of the drawings]

FIG. 1 is an overall side view showing an apparatus for performing a main rope cutting method according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a side view of the main rope gripper according to one embodiment of the present invention.

FIG. 4 is a plan view of FIG. 3;

FIG. 5 is a side view of a main rope grasper according to another embodiment of the present invention.

FIG. 6 is a plan view of FIG. 5;

FIG. 7 is an overall side view showing an apparatus for performing a main rope cutting method according to a conventional example.

[Explanation of symbols]

 Reference Signs List 5 hoisting machine 6 sheave 8 basket 9 counterweight 10 main rope 11 end coupling tool 17 chain block 17a hook 20 gripper 21 suspension part (shackle) 22 gripper 23 holder 24b suspension part (suspension rod)

Claims (3)

(57) [Claims] 1. A main rope, one end of which is connected to a car via an end connector and the other end of which is connected to a counterweight via an end connector, is suspended from an upper sheave and lifted by a hoist. In the elevator to be driven, a gripper is attached to a main rope located at an appropriate height from one of the end couplings, a chain block hanging hook is suspended from the gripper, and the chain block is operated. Lifting the car or the counterweight, relaxing the main rope below the gripper, and performing a predetermined truncation. 2. A main rope, one end of which is connected to a car via an end connector and the other end of which is connected to a counterweight via an end connector, is suspended on an upper sheave, and is lifted by a hoist. In a driven elevator, a gripper that grips and tightens a main rope higher than a portion to be trimmed, a chain block suspended from the gripper to lift a car or a counterweight, and an upper part of the car or the counterweight. And an end connector for connecting the cut end of the main rope to the main rope. 3. The elevator main body according to claim 2, wherein the gripper comprises a plurality of gripping pieces having a gripping groove of a main rope hanging in a parallel state at opposing positions and a fastener, and has a suspension portion of the chain block. Cord trimming device.