TWI736963B - Elevator device and method for modifying elevator - Google Patents

Abstract

Provided are an elevator device and a method for modifying an elevator. The method for modifying an elevator, which modifies an existing elevator device into an elevator device having a different roping type and a different kind of traction machine, includes a first step of installing a machine beam and installing a traction machine to be newly installed on the machine beam in a space formed within a machine room by demolishing the existing traction machine, a second step of installing a car suspension sheave on the car, installing a counterweight suspension sheave on a counterweight, and disposing the car the counterweight within a hoistway, and a third step of winding a main rope around the car suspension sheave, the main sheave provided on the traction machine, and the counterweight suspension sheave to fix both ends of the main rope to the machine beam. In the first step or the second step, the traction machine and the car suspension sheave are disposed so that a first direction that is a direction of a rotation axis of the main sheave disposed on the traction machine and a second direction that is a direction of a rotation axis of the car suspension sheave are inclined with respect to each other.

Description

Lifting device and method of transforming lift

The present invention relates to a lifting device and a method for transforming an elevator.

According to the type of rope ratio, the lifting system can be classified into 1:1 rope ratio type lifting system and 2:1 rope ratio type lifting system. According to the type of tractor, it can also be classified into gear traction type lifting system and gearless traction machine Type lifting system.

A lift renovation work aims to ensure the quality required by customers by replacing the whole or part of the worn-out lift during operation. Generally speaking, when performing retrofitting work, the existing rope ratio method and tractor type can be maintained at the time of replacement.

The existing dilapidated lifting system is mainly a 1:1 rope ratio type lifting system using a geared tractor. In this rope ratio type lifting system, the geared tractor is installed in a machine room, and a suspension pulley is not installed in a machine cabin and a counterweight. In addition to a main pulley, a pair of pulleys can also be installed to separate and operate a rope according to the position of the cabin and the balance weight.

Geared tractors have problems such as low efficiency and environmental pollution (due to the use of lubricants). In recent years, more and more use of a gearless tractor is one of the 2:1 rope ratio type lifting system. However, the 1:1 rope ratio type lifting system is transformed into a 2:1 rope ratio type lifting system In the reconstruction work, because the existing counterweight guide rails must be moved, there is a problem of increasing the working cycle and cost.

One aspect of the present invention provides a lifting device and a method of transforming an elevator. The lifting device can transform an existing lifting device into the lifting device according to the present invention without involving moving a position of a counterweight guide rail. In the case of reinstalling one of the procedures of the counterweight guide rail, the lifting device is different from the existing lifting device in terms of a rope ratio type and a type of tractor.

Another aspect of the present invention provides a lifting device and a method for transforming an elevator, in which a rope ratio type and a type of tractor can be easily changed when performing an elevator transformation work, and the replacement of a guide rail is reduced. 1. Work cycle and cost.

According to another aspect of the present invention, there is provided a lifting device, which includes: a carriage configured to lift along a carriage rail in a hoistway; and a carriage suspension pulley coupled to the carriage An upper part; a counterweight, which rises and descends along a counterweight guide rail in the hoistway; a counterweight suspension pulley, which is coupled to an upper part of the counterweight; and a tractor, which has a main rope through To be connected to the main pulley of the cabin suspension pulley and the counterweight suspension pulley, and the tractor is configured to rotate the cabin suspension pulley and the counterweight suspension pulley to provide lifting and lowering of the cabin and the counterweight suspension pulley. The driving force of the counterweight, in which the tractor and the carriage suspension pulley are arranged in a first direction (which is a direction of a rotation axis of the main pulley arranged on the tractor) and a second direction (It is a direction of a rotation axis of the suspension pulley of the cabin) is inclined with respect to each other.

According to another aspect of the present invention, there is provided a method of transforming an elevator, which transforms an existing elevator device into an elevator device having a different rope ratio type and a different type of tractor, the method includes: a first Step, it installs a machine beam and removes the existing pull The traction machine is installed in a space formed in a machine room, a tractor newly installed on the machine beam; a second step, it installs a carriage suspension pulley on the carriage, and suspends a balance weight The hanging pulley is installed on a counterweight, and the carriage and the counterweight are placed in a hoistway; and a third step, which surrounds the carriage suspension pulley, the main pulley set on the tractor, and The balance weight suspension pulley winds a main rope to fix both ends of the main rope to the machine beam, wherein in the first step or the second step, the tractor and the cabin suspension pulley are arranged Make a first direction (which is a direction of a rotation axis of the main pulley placed on the tractor) and a second direction (which is a direction of a rotation axis of the cabin suspension pulley) relative to Tilt to each other.

1: shaft

2: Carriage

3: Carriage rail

4: balance weight

5: Counterweight guide rail

6: Machine beam

7: Machine base

11: Tractor with gear

12: Drive pulley

13: lanyard secondary pulley

21: Tractor

22: Main pulley

23: Carriage suspension pulley

25: Balance weight suspension pulley

C1: Center

C2: Center

CP: Center plane

R1: Rotation axis

R2: Rotation axis

R3: Rotation axis

RP: reference surface

Fig. 1 is a view of a 1:1 rope ratio type lifting device according to one of the related technologies; Fig. 2 is a view of a 2:1 rope ratio type lifting device according to a comparative example of the present invention; Fig. 3 is a view according to the present invention A view of a lifting device according to a first embodiment of the present invention; and FIG. 4 is a view of a lifting device according to a second embodiment of the present invention.

Hereinafter, the preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First of all, the embodiments to be described below are embodiments suitable for understanding the technical features of a lifting device of the present invention and a method of modifying an elevator. However, the technical features of the present invention are not limited to the application or detailed description of the embodiments of the present invention, and various modifications can be made within the technical scope of the present invention.

One purpose of the present invention is to transform the existing lifting device into a lifting device that is different from the existing lifting device in terms of a rope ratio type and a type of tractor 21. For example, a lifting system using the 1:1 rope ratio type geared tractor 11 in Figure 1 can be transformed into the application of Figure 2: 2:1 A lifting system of the rope ratio type tractor 21.

The geared tractor 11 may be a tractor with a reducer attached thereto, and the tractor 21 may be a tractor in which one of the main pulleys 22 is directly coupled to a rotating shaft of a motor and does not use a reducer.

However, in order to transform the tractor of FIG. 1 into the tractor of FIG. 2, a procedure of moving and installing a counterweight guide rail 5 is required.

Specifically, referring to Figure 1, the use of a 1:1 rope ratio type lifting device with a geared tractor 11 can eliminate the use of a carriage suspension pulley 23 and a counterweight suspension pulley 25. Therefore, one carriage 2 is one The center C1 and the center C2 of a counterweight 4 can be placed in the same line. A driving pulley 12 and a lanyard auxiliary pulley 13 of the geared tractor 11 can be further provided.

Here, one carriage guide rail 3 in a hoistway 1 can be vertically arranged in a pair in the hoistway 1. When a virtual surface that connects the pair of carriage guide rails 3 vertically arranged in the hoistway 1 to each other is referred to as a reference plane RP, and a surface extending from the center C1 of the carriage 2 in a direction perpendicular to the reference plane RP is referred to as a center plane In CP, the center C2 of the counterweight 4 can be placed on the center plane CP.

On the other hand, referring to Figure 2, a 2:1 rope ratio type lifting device can use the carriage suspension pulley 23 and the counterweight suspension pulley 25, therefore, the center C1 of the carriage 2 and the center C2 of the counterweight 4 may not be installed In the same line. That is, the center C2 of the balance weight 4 may not be placed on the center plane CP.

Therefore, in order to transform the 1:1 rope ratio type lifting device according to the related technology to the 2:1 rope ratio type lifting device according to the related technology, it is necessary to move and reinstall the counterweight guide rail that guides the counterweight 4 A program of 5. Therefore, when the renovation work is performed, the work cycle and cost increase.

Therefore, in order to solve the above-mentioned problems, the present invention provides a lifting device and a modification One method of the elevator is to convert the 1:1 rope ratio type lifting device into the 2:1 rope ratio type lifting device without moving the position of the counterweight guide rail 5 in the lifting device.

Hereinafter, with reference to FIG. 3 and FIG. 4, a lifting device and a method of transforming an elevator will be described. For ease of description, the tractor 11 before the renovation work refers to an existing tractor, and the tractor 21 after the renovation work refers to a newly installed tractor or a tractor.

First, referring to FIG. 3, a lifting device according to the present invention includes: a carriage 2 which is lifted and lowered along a carriage guide rail 3 in a hoistway 1; and a carriage suspension pulley 23 coupled to one of the carriages 2 The upper part; a counterweight 4, which is raised and lowered along a counterweight guide rail 5 in the hoistway 1; and a counterweight suspension pulley 25, which is coupled to an upper part of the counterweight 4. Here, each of the cabin guide rail 3 and the counterweight guide rail 5 can be arranged vertically in the hoistway 1 and spaced apart from each other in pairs.

For ease of description, a virtual surface connecting the pair of car guide rails 3 to each other is referred to as a reference plane RP, and a surface extending from the center C1 of the car 2 in a direction perpendicular to the reference plane RP is referred to as a center plane CP.

In addition, the lifting device further includes a tractor 21. The tractor 21 rotates the cabin suspension pulley 23 and the balance weight suspension pulley 25 to provide the driving force of the elevator cabin 2 and the balance weight 4. In addition, the tractor 21 further includes a main pulley 22, and the main pulley 22 is connected to the cabin suspension pulley 23 and the counterweight suspension pulley 25 through a main rope. In the tractor 21 according to the present invention, a drive shaft of a motor and a rotation axis R1 of the main pulley 22 can be matched with each other. Therefore, when the tractor 21 is adjusted according to the installation angle, the main pulley 22 can be adjusted according to the installation angle.

Here, according to the present invention, the tractor 21 and the carriage suspension pulley 23 are arranged in a first direction (which is one direction of the rotation axis R1 of the main pulley 22 provided on the tractor 21) and a second direction (It is one direction of the rotation axis R2 of the cabin suspension pulley 23) is inclined with respect to each other.

As described above, in the lifting device according to the present invention, the tractor 21 or the cabin suspension pulley 23 can be adjusted according to the installation angle to position the main pulley 22, the counterweight suspension pulley 25, and the cabin suspension at an appropriate angle. Each of the pulleys 23 has a rope position that matches one of the balance weight suspension pulley 25 and the cabin suspension pulley 23.

In particular, if the lifting device according to the present invention is used, when the existing lifting device is transformed into the lifting device according to the present invention (which is different from the existing lifting device in terms of a rope ratio type and a type of tractor), The transformation work can be performed without involving a procedure of moving one of the positions of the counterweight guide rail 5 to reinstall one of the counterweight guide rails 5.

Therefore, according to the present invention, when performing the elevator renovation work, the rope ratio type and the type of the tractor 21 can be easily changed, and the work cycle and cost of replacing the guide rail can be reduced.

In particular, according to the present invention, when the tractor 21 or the cabin suspension pulley 23 is installed, the main pulley 22 and the cabin suspension pulley 23 can be arranged such that at least one of the first direction or the second direction is relative to the reference The surface RP is inclined. Here, one of the inclination of the first direction and the second direction can be appropriately adjusted according to the positions of the machine car 2 and the counterweight 4.

More specifically, referring to the first embodiment of FIG. 3, the cabin suspension pulley 23 can be arranged to extend so that the second direction extends in a direction parallel to the reference plane RP. In addition, the tractor 21 may be arranged such that the first direction of the main pulley 22 extends in a direction inclined with respect to the reference plane RP.

As described above, because the tractor 21 is installed obliquely, the center C2 of the counterweight 4 and the center of the counterweight suspension pulley 25 can be placed on the center plane CP. That is, just like the elevator using the 1:1 rope ratio type geared tractor 11 before the transformation, according to the present invention, the center C2 of the counterweight 4 can be placed on the center plane CP, and the counterweight guide rail 5 can also be placed at the same position Place.

Referring to the second embodiment of FIG. 4, a tractor 21 can be arranged such that a first direction of a main pulley 22 extends in a direction parallel to a reference plane RP. In addition, a cabin suspension pulley 23 may be arranged such that a second direction extends in a direction inclined with respect to the reference plane RP.

In particular, when the cabin suspension pulley 23 is installed on an upper surface of the cabin 2, the second direction can be installed to tilt in view of the lanyard position of each of the main pulley 22 and the counterweight guide 5. As described above, because the cabin suspension pulley 23 is installed obliquely, the center C2 of the balance weight 4 and the center of the balance weight suspension pulley 25 can be placed on the center plane CP.

As in the embodiment of FIGS. 3 and 4, because the first direction and the second direction are arranged to be inclined relative to each other, the center C2 of the balance weight 4 and the center of the balance weight suspension pulley 25 can be placed on the center plane CP.

However, the manner in which the first direction and the second direction are arranged to be inclined is not limited to the embodiment of FIG. 3 and FIG. 4. Therefore, as long as the center C2 of the balance weight 4 and the center of the balance weight suspension pulley 25 are placed on the center plane CP, the embodiment can be modified in various ways. For example, all the first direction and the second direction may be arranged to extend in a direction inclined with respect to the reference plane RP.

As in the above embodiment, the rotation axis R1 of the main pulley 22 and the rotation axis R3 of the counterweight suspension pulley 25 can be set to be perpendicular to each other. Therefore, one of the suspension angles of the balance weight 4 can be changed according to one of the installation angles of the tractor 21. However, the angle between the rotation axis R1 of the main pulley 22 and the rotation axis R3 of the counterweight suspension pulley 25 is not limited to this.

Like the above-mentioned embodiment, a plurality of cabin suspension pulleys 23 can be provided. A plurality of cabin suspension pulleys 23 can be arranged in a row. Here, the rotation axes of the plurality of cabin suspension pulleys 23 may be parallel to each other.

Hereinafter, a method of modifying the elevator according to the present invention will be described. According to this The method of retrofitting an elevator is related to a method of transforming an existing elevator device into the elevator device according to the present invention. The description overlapping with the above description will be omitted below.

One method of modifying an elevator according to the present invention is based on modifying an existing elevator into a lifting device with a different rope ratio type and a different tractor. For example, in the method for upgrading an elevator according to the present invention, the existing elevator device can be set to a 1:1 rope ratio type and include a geared tractor 11 (see FIG. 1). The lifting device modified to be newly installed can be set to a 2:1 rope ratio type and includes a tractor 21 (see Fig. 3 or Fig. 4).

The method for upgrading an elevator according to the present invention may include a first step, a second step, and a third step.

The first step is a step of installing a machine beam 6 and installing a tractor 21 newly installed on the machine beam 6 in a space formed in a machine room by removing the existing tractor 11.

In the first step, the existing tractor 11, a main rope, a carriage 2 and a counterweight 4 can be disassembled, and the existing tractor 11 can be removed from the machine room. A machine base 7 and a machine beam 6 can be installed in the space from which the existing tractor 11 is removed, and the tractor 21 fixed to the machine beam 6 can be placed.

The second step is to install a cabin suspension pulley 23 on the cabin 2, install a counterweight suspension pulley 25 on a counterweight 4, and place the cabin 2 and the counterweight 4 in a hoistway 1. One step.

The third step is a step of winding the main rope around the cabin suspension pulley 23, the main pulley 22 provided on the tractor 21, and the balance weight suspension pulley 25 to fix the two ends of the main rope to the machine beam 6.

In particular, in the third step, the main pulley 22 of the tractor 21 can be used to The main rope is wound from the cabin suspension pulley 23 to the balance weight suspension pulley 25 and hung on the balance weight suspension pulley 25, and both ends of the main rope can be fixed to a fastening part of the machine beam 6. Therefore, when the main pulley 22 of the tractor 21 is rotated, the cabin suspension pulley 23 and the counterweight suspension pulley 25 can be rotated, and the main ropes can be moved at the same time. Here, the carriage 2 and the counterweight 4 can move vertically along a carriage rail 3 and a counterweight guide rail 5, respectively, and the carriage 2 and the counterweight 4 can move vertically through each other.

In the first step or the second step, the tractor 21 and the carriage suspension pulley 23 are arranged such that a first direction (which is a direction of a rotation axis R1 of the main pulley 22) and a second direction (which is a direction of the rotation axis R1 of the main pulley 22) One direction of the rotation axis R2 of the cabin suspension pulley 23 is inclined with respect to each other.

In particular, the main pulley 22 and the cabin suspension pulley 23 may be arranged such that at least one of the first direction or the second direction is inclined with respect to a reference plane RP (refer to FIGS. 3 and 4).

As described above, because the first direction and the second direction are arranged to be inclined with respect to each other, in a state in which the balance weight 4 is arranged to be guided by the existing balance weight guide rail 5, a center C2 of the balance weight 4 And a center of the balance weight suspension pulley 25 is arranged on a center plane CP. Therefore, there is no need to move the existing counterweight guide rail 5 when performing the renovation work.

In the lifting device according to the present invention, the tractor or the carriage suspension pulley can be adjusted according to the installation angle to position the main pulley, the counterweight suspension pulley and the carriage suspension pulley at an appropriate angle to match the balance weight suspension The position of the lanyard for each of the hanging pulley and the cabin hanging pulley.

In particular, if the lifting device according to the present invention is used, when the existing lifting device is transformed into the lifting device according to the present invention (which is different from the existing lifting device in terms of rope ratio and type of tractor), it can be used in Perform the transformation work without involving the procedure of moving the position of the counterweight guide to reinstall the counterweight guide.

Therefore, according to the present invention, when performing the elevator renovation work, the rope ratio type and the tractor type can be easily changed, and the work cycle and cost of replacing the guide rail can be reduced.

In the lifting device according to the present invention, the tractor or the carriage suspension pulley can be adjusted according to the installation angle to position the main pulley, the counterweight suspension pulley and the carriage suspension pulley at an appropriate angle to match the balance weight suspension The position of the lanyard for each of the hanging pulley and the cabin hanging pulley.

In particular, if the lifting device according to the present invention is used, when the existing lifting device is transformed into the lifting device according to the present invention (which is different from the existing lifting device in terms of rope ratio and type of tractor), it can be used in Perform the transformation work without involving the procedure of moving the position of the counterweight guide rail to reinstall the counterweight guide rail.

Therefore, according to the present invention, when performing the elevator renovation work, the rope ratio type and the tractor type can be easily changed, and the work cycle and cost of replacing the guide rail can be reduced.

Although the present invention has been described in conjunction with what is currently regarded as a preferred embodiment, it should be understood that the present invention is not limited to the disclosed embodiments, but various modifications can be made without departing from the spirit of the present invention And changes.

1: shaft

2: Carriage

3: Carriage rail

4: balance weight

5: Counterweight guide rail

6: Machine beam

7: Machine base

21: Tractor

22: Main pulley

23: Carriage suspension pulley

25: Balance weight suspension pulley

C1: Center

C2: Center

CP: Center plane

R1: Rotation axis

R2: Rotation axis

R3: Rotation axis

RP: reference surface

Claims (5)

A lifting device comprising: a carriage configured to lift along a carriage rail in a hoistway; a carriage suspension pulley coupled to an upper part of the carriage; a counterweight, which It is configured to move up and down along a counterweight guide rail in the hoistway; a counterweight suspension pulley coupled to an upper part of the counterweight; and a tractor with a main rope connected to the cabin A main pulley of the suspension pulley and the counterweight suspension pulley, the traction machine is configured to rotate the cabin suspension pulley and the counterbalance suspension pulley to provide driving force for lifting the cabin and the counterweight, The tractor and the carriage suspension pulley are arranged such that a first direction and a second direction are inclined with respect to each other, and the first direction is a direction of a rotation axis of the main pulley arranged on the tractor , The second direction is a direction of a rotation axis of the suspension pulley of the carriage, wherein when the carriage guide rails are arranged in a pair and vertically arranged in the hoistway, a virtual surface connecting the pair of carriage guide rails to each other Referred to as a reference plane, and a surface extending from a center of the carriage in a direction perpendicular to the reference plane is referred to as a central plane, and the carriage suspension pulley is arranged such that the second direction is parallel Extending in a direction of the reference plane, the tractor is arranged so that the first direction of the main pulley extends in a direction inclined with respect to the reference plane, and a center of the balance weight and the balance weight suspension pulley A center and a center of the cabin suspension pulley are arranged on the center plane because the first direction and the second direction are arranged to be inclined to each other. Such as the lifting device of claim 1, wherein the rotation axis of the main pulley and the rotation axis of the counterweight suspension pulley are set to be perpendicular to each other. Such as the lifting device of claim 1, in which a plurality of the carriage suspension pulleys are arranged, and the plurality of carriage suspension pulleys are arranged in a row. A method for transforming an elevator, which transforms an existing elevator device into an elevator device with a different rope ratio type and a different type of tractor. The existing elevator device has an existing counterweight guide rail and is installed on the existing elevator device. There is one existing counterweight and an existing tractor on the counterweight guide rail. The method includes: a first step of installing a machine beam and removing the existing tractor to install it in a machine room formed A tractor newly installed on the machine beam in a space; in a second step, it installs a carriage suspension pulley on the carriage, and installs a counterweight suspension pulley on a counterweight, and Placing the carriage and the counterweight in a hoistway; and a third step of winding a main rope around the carriage suspension pulley, the main pulley set on the tractor, and the counterbalance suspension pulley To fix both ends of the main rope to the machine beam, wherein in the first step or the second step, the tractor and the carriage suspension pulley are arranged so that a first direction and a second direction are opposite Are inclined to each other, the first direction is a direction of a rotation axis of the main pulley disposed on the tractor, and the second direction is a direction of a rotation axis of the cabin suspension pulley. When a virtual surface of the carriage guide rails is referred to as a reference surface, and a surface extending from a center of the carriage in a direction perpendicular to the reference surface is referred to When called a center plane, the first direction and the second direction are arranged to be inclined to each other, and in a state in which the balance weight is arranged to be guided by an existing balance weight guide rail, a center of the balance weight And a center of the balance weight suspension pulley and a center of the cabin suspension pulley are arranged on the center plane. Such as the method of claim 4, wherein the existing lifting device is set to a 1:1 rope ratio type and includes a geared tractor, and is modified to be a newly installed lifting device set to a 2:1 rope ratio Type and includes a gearless tractor.

Images