JP7033513B2 - Elevator main rope exchange device and elevator main rope exchange method - Google Patents

Description

The present invention relates to a main rope changing device and a main rope changing method for changing the main rope of an elevator.

In recent years, in order to save space in the installation location, an elevator called a machine room-less elevator, which has no machine room at the top of the hoistway, has become the mainstream. In this type of machine room-less elevator, both ends of the main rope are connected to the rope fixing part at the top of the hoistway, and the middle part of the main rope is provided at the weight pulley provided on the counterweight and at the bottom of the car. It is wound around the pulley under the car and the hoisting sheave of the hoisting machine installed at the bottom of the hoistway. Is configured to move up and down in the hoistway in a fishing bottle style.

In elevators, the main rope may be broken if abnormalities such as rust, wire breakage, and wear occur over time, so regular visual inspections and inspections by dedicated diagnostic equipment are carried out. If it is found that the above-mentioned abnormality exceeds the specified range, the work of replacing the main rope with a new one is carried out, but at the time of the replacement work of the main rope, the rider is an elevating body. It is necessary to temporarily fix the cage and balance weight in the hoistway.

When replacing the main rope, with the riding car and balance weight fixed in the hoistway, connect the new rope to one end of the old rope removed from the rope fixing part, and then pull the other end of the old rope. It is necessary to replace the old and new ropes, but in an elevator without a machine room at the top of the hoistway, such work must be done in the limited space inside the hoistway and at the landing.

In Patent Document 1, a drum-integrated main rope gripping device in which a feeding drum, a winding drum, and a main rope gripping device are integrated is installed at the top floor landing, and a riding car and a balancing weight are placed in the hoistway. After removing the old rope from the rope fixing part in the fixed state, guide the new rope pulled out from the sending drum with the rope guide slide attached to the top of the hoistway and connect it to one end side of the old rope. Guide the other end of the old rope with another rope guide slide attached to the top of the hoistway and attach it to the take-up drum. It describes how to replace the main rope so that it can be sent out and wound up at the same time.

Japanese Unexamined Patent Publication No. 2012-56716

However, in the case of the prior art described in Patent Document 1, since the old and new ropes are guided by the rope guide pulley attached to the top of the hoistway, the rope routing distance when connecting the old and new ropes is long. Therefore, there is a problem that workability is deteriorated. In addition, the rope transfer route from the rope guide pulley to the drum-integrated main rope gripping device installed at the landing approaches the peripheral edge of the elevator entrance / exit, and the entrance / exit is required to have a high design such as a three-way frame. Since there are parts, curing work is required to protect the parts from damage to the rope, and this also causes a problem of deteriorating workability.

Further, in the conventional technique described in Patent Document 1, since the sending drum for storing the old and new ropes and the winding drum are arranged side by side in a state where the rotation axis is oriented horizontally, the elevator can be raised and lowered. As the road journey becomes longer and the total length of the old and new ropes to be stored becomes longer, it is necessary to add the drums in the horizontal direction and connect them in a chain of beads, which is a narrow elevator like a machine room-less elevator. There is also the problem that it cannot be used.

The present invention has been made in view of the actual situation of such a prior art, and an object thereof is a main rope exchange device and a main rope exchange capable of easily performing a main rope exchange work regardless of the hoistway stroke of an elevator. To provide a method.

In order to achieve the above object, a typical main rope changing device for an elevator according to the present invention has both ends connected to a rope fixing portion at the top of the hoistway, and an intermediate portion is a hoisting sheave of the hoisting machine. It is a main rope exchange device for exchanging multiple old ropes wound around the rope with new ropes. A winding for winding the feeding drum for sending out the new rope and the old rope rotatably arranged on the sending drum on the uppermost stage, which is coaxial with the sending drum. The rope guide is provided with a picking drum, a rope guide provided on the pedestal and defining a transfer path between the new rope and the old rope, and the rope guide includes one new rope sent from the sending drum. A sorting roller for sorting is provided for each, and the sending drum and the winding drum are characterized in that they can rotate independently .

According to the present invention, the main rope replacement work can be easily performed regardless of the hoistway stroke of the elevator. Issues, configurations and effects other than those described above will be clarified by the following description of the embodiments.

It is a schematic block diagram which shows the main part of an elevator. It is a flowchart which shows the procedure of the main rope exchange method of the elevator which concerns on embodiment. It is explanatory drawing which shows the main rope exchange work of the elevator which concerns on embodiment. It is explanatory drawing which shows the main rope exchange work of the elevator which concerns on embodiment. It is a side view which shows the main rope exchange apparatus of the elevator which concerns on embodiment. It is a top view of the main rope exchange device. It is a detailed view of the rope guide provided in the main rope exchange device. It is an operation explanatory view of the rope guide.

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic configuration diagram showing a main part of an elevator to which the main rope changing device according to the embodiment of the present invention is applied.

In the machine room-less elevator 1 shown in FIG. 1, in a hoistway 2 installed in a building, a car 4 connected via a main rope 3 and a counterweight 5 move up and down by the driving force of a hoisting machine 6. It is a thing. A top beam 7 is installed in the upper part of the hoistway 2, and two top pulleys 8 are attached to the top beam 7. The hoisting machine 6 is installed at a lower position in the hoistway 2, and has a hoisting sheave 9 that rotates by using a motor (not shown) as a drive source. The balance weight 5 is guided in the vertical direction along two guide rails (not shown), and a shock absorber 10 facing the lower surface of the balance weight 5 is installed at the inner bottom of the hoistway 2. ing.

The main rope 3 passes from the rope fixing portion 11a provided on the top beam 7 to the lower cage pulley 4a provided at the lower part of the car 4, and passes through one of the top pulleys 8 to the hoisting sheave of the hoisting machine 6. A rope fixing portion 11b that is wound around 9 and passes from the hoisting machine 6 via the other top pulley 8 to the weight pulley 5a provided on the upper part of the counterweight 5 and the other end is provided on the top beam 7. Is linked to. Here, the elevator 1 is suspended by a plurality of main ropes 3, and one of the main ropes 3 is typically shown in FIG.

Next, with reference to FIGS. 3 to 8, the procedure of the main rope replacement method according to the embodiment will be described with reference to the flowchart shown in FIG. 3 and 4 are explanatory views showing the main rope replacement work of the elevator according to the embodiment.

First, as step S1, the balance weight 5 is abutted against the shock absorber 10 and fixed, and the car 4 is held so as not to move near the top of the hoistway 2 by using a chain block or the like (not shown).

Next, as step S2, as shown in FIG. 3, the drive device 12 is suspended from the top beam 7 and installed in the hoistway 2, and a pair of relay rollers 13a and 13b are attached to the upper surface of the car 4. The drive device 12 has a roller that rotates with a motor as a drive source, and the drive device 12 is connected by wire or wirelessly to a controller (not shown) operated by an operator.

Next, as step S3, both ends of the existing main rope 3 (hereinafter referred to as an old rope) suspending the car 4 and the counterweight weight 5 are removed from the rope fixing portions 11a and 11b, and the old rope 3 is used. Is guided to the rollers of the drive device 12 and the relay rollers 13a and 13b on the car 4, respectively.

Next, as step S4, as shown in FIG. 4, the main rope exchange device 14 according to the embodiment is installed at the landing 15 on the top floor. Here, the structure of the main rope changing device 14 will be described. 5 is a side view of the main rope changing device 14, FIG. 6 is a plan view of the main rope changing device 14, FIG. 7 is a detailed view of the rope guide provided in the main rope changing device 14, and FIG. 8 is an operation explanatory view of the rope guide. Is.

As shown in FIGS. 5 to 8, the main rope changing device 14 according to the embodiment has a pedestal 17 provided with a plurality of wheels 16 with a locking function, and a plurality of stages (on the pedestal 17 via a lower turntable 18). In this embodiment, four stages) The rotatable delivery drum 19 mounted in a stacked state and the rotatable winding drum 21 mounted on the uppermost delivery drum 19 via the upper turntable 20. A rope guide 23 provided at the upper end of a support column 22 erected on one end side of the pedestal 17, and a sorting device 24 erected on the pedestal 17 near the delivery drum 19 are provided. It is configured.

The pedestal 17 is configured by connecting both ends of two parallel steel materials 17a in a frame shape with a plate material 17b, and the weight is reduced by forming the frame shape in this way. Since the wheels 16 with a lock function are attached to the four corners of the pedestal 17, the pedestal 17 can be smoothly moved on the floor surface of the landing 15 by the wheels 16 and can be fixed so as not to move in a predetermined position. It is possible. Further, a stabilizing leg 26 having jack bolts 25 attached to both ends is attached to the pedestal 17, so that the pedestal 17 can be stably supported on the floor surface of the landing 15 by adjusting the jack bolts 25. It has become.

The feed drum 19 and the take-up drum 21 can rotate around a common support shaft 27, and the feed drum 19 and the take-up drum 21 are placed horizontally with their rotation shafts oriented in the vertical direction. It is arranged in layers.

A new rope 3A to be replaced with the old rope 3 is wound around the delivery drum 19, and a plurality of new ropes 3 used in the elevator 1 can be replaced at once. The rope 3A is wound around the delivery drum 19 of each stage. The lowermost feed drum 19 is placed on the lower turntable 18, and the lower turntable 18 is a rope that prevents the new rope 3A wound around the feed drum 19 from losing its shape in the outer peripheral direction. A guard 28 is provided.

The old rope 3 replaced with the new rope 3A is wound around the take-up drum 21, and the upper turntable 20 is placed between the take-up drum 21 and the uppermost delivery drum 19. Since they are interposed, the sending drum 19 and the winding drum 21 can rotate independently of each other.

The lower turntable 18 is fixed to the steel material 17a of the pedestal 17 by using a plurality of bolts 29, and when the main rope changing device 14 is carried in / out to the landing 15, the bolt 29 is removed to form a feeding drum 19 and the lower turntable 18. The unit of the lower turntable 18 including the take-up drum 21 can be disassembled from the pedestal 17. Similarly, since the above-mentioned stable legs 26 and the later-described sorting device 24 are also fixed to the steel material 17a of the pedestal 17 by using bolts 29, these stabilizing legs 26 and the sorting device are used when the main rope changing device 14 is carried in / out. 24 can be disassembled from the pedestal 17.

The sorting device 24 is provided with a plurality of pairs of guide rollers 30 at intervals in the vertical direction so as to correspond to the height positions of the delivery drums 19 arranged in a plurality of stages. As described above, a plurality of new ropes 3A are wound around the delivery drum 19, but these new ropes 3A pass through the corresponding guide rollers 30 for each rope and then end side of one end of the pedestal 17. It leads to the rope guide 23 installed in.

The rope guide 23 defines a transfer path between the new rope 3A sent out from the sending drum 19 and the old rope 3 wound around the take-up drum 21, and is the upper end portion of the support column 22 erected on the pedestal 17. It is rotatably installed via the turntable 31 (see FIG. 8). At that time, the height position H1 of the rope guide 23 is adjusted by the support column 22 so that the old and new ropes 3 and 3A defined by the rope guide 23 do not come into contact with the three-sided frame (not shown) installed at the entrance / exit of the elevator 1. It is possible. Specifically, a plurality of types of columns 22 having different length dimensions are prepared, and the columns 22 having the optimum length can be attached to the pedestal 17 according to the specifications of the elevator 1, or the length can be changed. It is sufficient to use the support column 22 of.

The rope guide 23 is provided with a sorting roller 32 for sorting the new ropes 3A that have passed through the guide roller 30 from the feeding drum 19 for each rope, and a plurality of the rope guides 23 are fed from the feeding drum 19 by the sorting roller 32. Care is taken to prevent the new rope 3A of the book from crossing. The sorting roller 32 is housed inside the box-shaped case 33, and a shackle 34 for guiding a plurality of old ropes 3 together is provided on the upper surface of the box-shaped case 33.

Here, assuming that the maximum height at which the delivery drum 19 and the take-up drum 21 are laminated, that is, the height from the floor surface of the landing 15 to the take-up drum 21 is H2, the height H1 of the rope guide 23 is The winding drum 21 is set at a position higher than the height H2. As a result, not only the intersection of the plurality of new ropes 3A sent out from the delivery drum 19 but also the intersection of the new rope 3A and the old rope 3 wound on the take-up drum 21 is prevented.

Returning to the flowchart of FIG. 2, after installing the main rope exchange device 14 at the landing 15 in step S4, as step S5, as shown in FIG. 4, the end of the old rope 3 and the end of the old rope 3 are sent out via one of the relay rollers 13b. The new rope 3A sent out from the drum 19 is connected by the connecting portion 35, and the end portion of the old rope 3 via the other relay roller 13a is attached to the winding drum 21.

Next, in step S6, the operator at the landing 15 drives the drive device 12 by operating a controller (not shown), and the old rope 3 is transferred in the direction of arrow A in FIG. 4 by driving the drive device 12. As a result, the feeding operation of the new rope 3A from the feeding drum 19 and the winding operation of the old rope 3 to the winding drum 21 are performed at the same time.

At this time, a plurality of new ropes 3A were simultaneously sent out from the feeding drum 19 to reach the rope guide 23, and after being sorted one by one by the sorting roller 32 of the rope guide 23, the new rope 3A was installed on the car 4. In order to take a transfer route guided by the relay rollers 13a and 13b and the drive device 12 installed at the top of the hoistway 2, the main ropes for a plurality of ropes used in the elevator 1 should be replaced at once. Moreover, since the rope routing distance when connecting the old and new ropes 3 and 3A is short, the main rope can be easily replaced.

Further, the rope guide 23 of the main rope changing device 14 installed at the landing 15 is adjusted to a height that does not come into contact with design parts such as a three-sided frame, and the new rope 3A and the old rope 3 pass through the rope guide 23. Since the relay rollers 13a and 13b on the car 4 are guided, the design parts can be protected from rope damage without the need for curing work.

Further, as shown in FIG. 8, since the rope guide 23 is rotatably installed at the upper end of the support column 22, the relative position change between the car 4 and the main rope changing device 14 causes the rotation of the rope guide 23. The main rope changing device 14 can be freely installed at any place in the landing 15.

Next, as step S7, the drive of the drive device 12 is stopped when the connection portion 35 approaches the take-up drum 21, and the sending operation of the new rope 3A and the take-up operation of the old rope 3 are stopped. After that, the connection portion 35 between the new rope 3A and the old rope 3 is disconnected, the new rope 3A is removed from the sending drum 19 of the main rope exchange device 14, and both ends of the removed new rope 3A are the top beam 7 of the hoistway 2. It is attached to the rope fixing portions 11a and 11b provided in the above.

Finally, as step S8, the balance weight 5 and the shock absorber 10 are released from the fixing, and the chain block or the like holding the car 4 is removed and returned to the state of being suspended by the new rope 3A, and then the test run is performed. And so on to complete.

If a large amount of the old rope 3 is wound around the take-up drum 21 during the work before the main rope replacement work is completed, the take-up drum 21 is driven while the drive device 12 is being driven. The old rope 3 is cut nearby, the rotation of the take-up drum 21 is forcibly stopped, the old rope 3 accumulated in the take-up drum 21 is taken out, and then the end of the cut old rope 3 is used for take-up. It may be reattached to the drum 21. At that time, since the delivery drum 19 and the take-up drum 21 can rotate independently, the rotation of the take-out drum 19 that sends out the new rope 3A is not stopped, and only the take-up drum 21 rotates. It can be temporarily stopped, and the old rope 3 accumulated in the take-up drum 21 can be easily taken out.

As described above, in the main rope exchange device 14 according to the present embodiment, the delivery drum 19 for storing the old and new ropes 3 and 3A and the take-up drum 21 are arranged in a horizontal position with the rotation axis oriented in the vertical direction. Therefore, even when the old and new ropes are stored because the elevator 1 has a long hoistway stroke, the drums 19 and 21 can be stacked in a string in the height direction, and the drive for rope transfer is sufficient. By separating the device 12 from the main rope changing device 14 and installing it in the hoistway 2, the width dimension of the entire device is suppressed, so that even an elevator 1 having a narrow width such as a machine room-less elevator can be used. Can be used.

Further, in the main rope exchange device 14 according to the present embodiment, a rope guide 23 that defines the transfer path of the old and new ropes 3 and 3A is installed at the upper end of the support column 22, and the old and new ropes defined by the rope guide 23 are installed. Since the height position H1 of the rope guide 23 can be adjusted by the support column 22 so that the 3 and 3A do not come into contact with the three-sided frame installed at the entrance and exit of the elevator 1, the design parts do not need to be cured. Can be protected from rope damage. Moreover, since the rope guide 23 is rotatably installed at the upper end of the support column 22, the relative position change between the car 4 and the main rope changing device 14 is absorbed by the rotation of the rope guide 23, and the main rope is replaced. The device 14 can be freely installed at a desired position of the landing 15.

Further, in the main rope exchange method according to the present embodiment, the old and new ropes 3 and 3A stored in the delivery drum 19 and the take-up drum 21 of the main rope exchange device 14 installed at the landing 15 are placed in the hoistway 2. Since the guide is guided by the relay rollers 13a and 13b installed on the car 4, the rope routing distance when connecting the old and new ropes 3 and 3A is short, and the main rope replacement work can be easily performed. can.

It should be noted that the above-described embodiments are examples for the purpose of explaining the present invention, and the scope of the present invention is not limited to those embodiments. Those skilled in the art can practice the invention in various other embodiments without departing from the gist of the invention.

For example, in the above embodiment, an elevator using a wire rope as the main rope 3 has been described, but the present invention can also be applied to an elevator using a flat belt instead of the wire rope.

1 Elevator 2 Hoistway 3 Main rope (old rope)
3A New rope 4 Rope 4a Under-cage pulley 5 Balanced weight 5a Weight pulley 6 Hoisting machine 7 Top beam 8 Top pulley 9 Hoisting sheave 10 Shock absorber 11a, 11b Rope fixing part 12 Drive device 13a, 13b Relay roller 14 Main rope Exchange device 15 Landing 16 Wheels 17 Pedestal 18 Lower turntable 19 Sending drum 20 Upper turntable 21 Winding drum 22 Strut 23 Rope guide 24 Sorting device 25 Jack bolt 26 Stabilizing leg 27 Support shaft 28 Rope guard 29 Bolt 30 Guide roller 31 Turntable 32 Sorting roller 33 Box-shaped case 34 Shackle 35 Connection

Claims (7)

Main rope exchange device for replacing multiple old ropes whose both ends are connected to the rope fixing part at the top of the hoistway and whose middle part is wound around the hoisting sheave of the hoisting machine. And,
A pedestal that can be installed at the landing and
A feeding drum for feeding the new rope, which is rotatably mounted on the pedestal in a state of being stacked in a plurality of stages,
A winding drum for winding the old rope, which is coaxial with the feeding drum and is rotatably arranged on the feeding drum at the uppermost stage .
A rope guide provided on the pedestal and defining a transfer route between the new rope and the old rope is provided.
The rope guide is provided with a sorting roller that sorts the new ropes sent out from the sending drum one by one.
The main rope changing device of an elevator, characterized in that the sending drum and the winding drum can rotate independently . In the main rope changing device of the elevator according to claim 1.
The rope guide is a main rope changing device for an elevator, characterized in that the rope guide is installed at a position higher than the maximum height at which the sending drum and the winding drum are laminated. In the main rope changing device of the elevator according to claim 2.
The rope guide is a main rope changing device for an elevator, characterized in that the rope guide is rotatably installed at the upper end of a support column erected on the pedestal. In the main rope changing device of the elevator according to claim 1.
A sorting device having a plurality of guide rollers is provided on the pedestal, and the new rope wound around the feeding drum is guided to the sorting roller via the corresponding guide roller of the sorting device. The main rope exchange device of the elevator featuring. In the main rope changing device of the elevator according to any one of claims 1 to 4.
The take-up drum is a main rope exchange device for an elevator, which is mounted on the uppermost delivery drum via a turntable. In the main rope changing device of the elevator according to claim 1.
An elevator main rope changing device characterized in that the pedestal is provided with a plurality of wheels for transfer and jack bolts for preventing falls. Both ends are connected to the rope fixing part at the top of the hoistway, and the middle part is a weight pulley provided on the counterweight, a lower cage pulley provided at the bottom of the car, and a hoisting sheave of the hoisting machine. It is a main rope replacement method that replaces multiple old ropes wound around with a new rope.
With the balance weight fixed to the lower part of the hoistway and the car held on the upper part of the hoistway, a drive device is installed on the upper part of the hoistway and a relay roller is placed on the upper part of the car. The installation process and
A step of removing the end portion of the old rope from the rope fixing portion and guiding the end portion to the drive device and the relay roller.
The process of installing the main rope changing device according to claim 1 at the elevator landing, and
The process of connecting the new rope sent out from the main rope exchange device and the ends of the old rope guided by the relay roller, and
A method for exchanging a main rope of an elevator, which comprises a step of driving the driving device to simultaneously send out the new rope and winding the old rope by the main rope exchanging device.

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