KR20120133686A

KR20120133686A - Circular elevator system using worm elevator

Info

Publication number: KR20120133686A
Application number: KR1020110052452A
Authority: KR
Inventors: 남 영 김; 주성준; 지현조
Original assignee: 코리엘리베이터 주식회사
Priority date: 2011-05-31
Filing date: 2011-05-31
Publication date: 2012-12-11

Abstract

In a building including a first lifting space and a second lifting space, an elevator system that operates an elevator to circulate the first lifting space and the second lifting space is a ropeless moving along the first and second lifting spaces. An elevator and a switch frame provided on at least one side of the top and bottom of the lifting space, the switch frame transfers the ropeless elevator between the first and second lifting space.

Description

Worm elevator circulation system {CIRCULAR ELEVATOR SYSTEM USING WORM ELEVATOR}

The present invention relates to an elevator or other lifting device, and more particularly, to an elevator system capable of transporting passengers or cargo while circulating a car of an elevator without wires or ropes.

An elevator (Elevator) is a device for transporting people or cargo vertically and vertically in response to gravity, and is used throughout high-rise buildings as well as low-rise buildings. In general, the elevator has a rope type elevator and a hydraulic elevator according to the driving method, in addition, there is a screw type, rack and pinion type, and a ropeless elevator using a linear motor instead of a hoist.

The rope elevator has a machine room for driving the elevator on the top floor, and a traction machine of the machine room moves the cabin up and down by connecting a car and a balance weight with a rope. Such a machine room may be detrimental to the building for several reasons, such as height limitations.

Recently, high-performance elevators have emerged along with the construction boom of high-rise buildings, and high-speed elevators moving at a high speed of about 60 km / h (1000 m / min) or more have been developed. There are also double-deck elevators that have two elevators connected up and down to improve their transport capacity, and there are twin elevators that operate two elevators independently in one elevator passage.

Skyscrapers require faster moving elevators to facilitate vertical copper transportation. To speed up an elevator, tension is applied to the wires that is proportional to the square of the speed, and the higher the elevator, the greater the tension. Therefore, the cross section of the rope becomes larger and the weight of the rope increases. In addition, because the length of the rope must be as long as the long distance of the skyscraper, the rope must be thicker by increasing the weight of the rope itself. In skyscrapers, the rope may be heavier than the elevator cabin.

For reference, the elevator is a low-speed elevator moving to less than 45m / min, a normal speed elevator moving to 60 ~ 105m / min, a high-speed elevator moving to about 120 ~ 300m / min, and moving to about 360m / min or more It can be classified as a high speed elevator.

In fact, among the high-speed elevators installed in the Buzz Dubai Building, the rope weighs only 20 tons (t). In addition, the weight of the counterweight is added, which requires a great deal of power to accelerate the elevator at high speed. After all, the elevator, which is too heavy due to the rope, must be accelerated at a very high speed, and therefore the motor of the hoist must also be provided with a significantly larger capacity than a general motor.

In addition, when the rope is lengthened by several hundred meters or more, it becomes difficult to stop at the correct position because the length of the rope varies according to the degree of wear of the rope or the temperature change. Therefore, the characteristics of the wire rope become more difficult and the control method thereof becomes complicated.

Conventional screw-type elevators utilize a structure in which a long post that is threaded is erected and a sleeve corresponding to the nut is installed in the cabin. In a screw-type elevator, the cabin is moved up and down by rotating the prop, so that it is used in a small simple elevator or when the fluid is difficult to move.

Already, skyscrapers of more than 100 stories are expected to use ropeless elevators instead of conventional rope elevators. US Patent No. 5234079 discloses an elevator using a linear motor. However, since these linear elevators move in the air without a rope, the safety device must be firmly tripled and tripled, and horizontal movement is possible because there is no physical contact. There are not many elements and it is very difficult to overcome.

The present invention provides an elevator system capable of circulating an elevator using a ropeless elevating device.

The present invention provides an elevator system that can safely support the cabin using physical contact and can increase elevator efficiency without friction.

The present invention provides an eco-friendly elevator system that can be practically high and can expect an energy regeneration effect.

According to an exemplary embodiment of the present invention, in a building including a first lifting space and a second lifting space, the elevator system for operating an elevator to circulate the first lifting space and the second lifting space, the first And a ropeless elevator moving along the second lifting space and a switch frame provided on at least one of upper and lower ends of the lifting space, wherein the switch frame transfers the ropeless elevator between the first and second lifting spaces.

In the case of rope type elevators, the rope acts as a structural limit, and the elevator is forced to move up and down. However, in the ropeless elevator, since there is no rope, two or more elevators may be arranged in one accommodation space, that is, a twin type elevator may be implemented.

In addition, as described above, it is possible to install a switch frame at the top or bottom of the hoisting space, and use the switch frame to allow the ropeless elevator to move to another hoisting space at the top and / or bottom of the hoisting space. Although the first and second lifting spaces are called in this embodiment, these lifting spaces may be provided in two, three or more, and these relationships may remain the same.

By allowing transfer between lifting spaces, the elevator can be controlled to circulate in one direction. For example, the first lifting space may provide one or two or more elevators that move only upwards, and the second lifting space may provide one or two or more elevators that move only downwards. When the elevator circulates only in one direction, the waiting time for the elevator can be significantly reduced, and the problem of rope entanglement can be solved by not using the rope.

In addition, the switch frame can transport the ropeless elevator with a linear reciprocating or rotational circulation. In addition, when the transfer is carried out by circulating a plurality of ropeless elevators, the elevator still receives the ropeless elevator that is continuously rising or falling. Can be prevented, and a plurality of switch frames can be used to process the entering elevator and the sending elevator simultaneously or between short time intervals.

The switch frame can be rotated in the moving member while performing linear reciprocating movement, rotational circulation, plural horizontal circulations, and the like, and the rotation of the door can be changed to the desired direction.

Ropeless elevators can be provided with a variety of elevators. For example, it may be manufactured by a method using a linear motor, or may be manufactured by a method using a worm driving unit described later. In the case of using a worm driving unit, the ropeless elevator includes a worm driving unit moving along the lifting space, the cab moving together with the cabin, and a rotation axis parallel to the moving path of the cabin, and the lifting space and the switch frame. It may include a main guide and an extension guide corresponding to the worm driving unit.

The worm driving unit includes a wormgear body in the form of a wormgear, and the worm gear may be engaged with the support of the worm supporting parts arranged at equal intervals to provide a force for lifting. . The worm drive unit alone can provide sufficient force for lifting, and assuming that the support values of the worm supports are arranged at intervals of about 40 cm, the worm gear body is about 360 m / min suitable for high speed elevators at a rotation speed of about 900 rpm. Speed can be implemented sufficiently. Of course, the ultra high speed of 600 ~ 1500m / min can also be fully implemented.

Basically, the cabin part can be vertically moved by the interaction between the worm drive unit and the worm support unit, and a rope as in the prior art is not used. Therefore, it can overcome the inefficiency according to the rope weight even when used in a high-rise building, and can use energy efficiently because it does not have to move tens of tons of rope.

Various methods can be used for low resistance contact between the worm drive and the worm support. For example, rolling contact using a roller may be used, and magnetic levitation may be formed using a permanent magnet, an electromagnet or the like. Both the roller or the magnetic levitation slides over the worm support teeth, so that the moving parts can be moved without noise or vibration, and the life of the parts can be increased by preventing wear between the parts.

In the present specification, a building may be understood as a concept including a connection structure connecting a building or a place, in addition to a general building, a tower, an apartment, and the like, and a lift space is not limited to only a closed space in the building, but partially. It may also include open spaces.

In addition, the cabin (car) is to support and protect the person or cargo, and transport, it can be provided in a state in which the space in the cabin is temporarily closed or partially open, the structure for transporting the cabin without shaking Or rails may also be provided.

Since the lifting device of the present invention does not use a rope or a wire, it is possible to improve the inefficiency according to the huge weight of the rope, and a skyscraper or a high-speed elevator can expect a greater energy saving effect.

In particular, it is possible to transfer the ropeless elevator between the lifting space by using a switch frame, it is possible to provide a circulation structure of the elevator, it is possible to increase the transportation efficiency in the building.

By increasing the transport efficiency, the number of lifting spaces in the building can be reduced or optimally maintained, and the reduction of the lifting spaces allows the building's internal space to be more extensively reflected. That is, the lifting device of the present invention can reduce the number of lifting spaces by increasing the transport efficiency, and can effectively use its own area occupied by each lifting space, thereby ensuring a lot of living or living space in the same space. As a building owner, it is possible to secure more pre-sale space while maintaining the same amount of transportation, which is why the economic effect is very high.

In addition, the elevating device of the present invention can prevent the accidental fall of the cabin part even if the worst-case situation that the power is cut off or the braking device is disabled. Due to the characteristics of the worm gear, even if it is descending, when the motor stops, the descending speed is reduced smoothly and physically stopped.Even if the descending speed is maintained at a safe low speed even when moving, it is also excellent for occupant protection. Do. In this case, the burden on the stability of the braking device can be reduced, and a new need for braking can be applied.

In addition, when descending can move the room with very little energy, it is possible to reuse and accumulate energy using induction power generation. In particular, as described above, when the external power supply is accidentally cut off, power can be generated from the rotation of the worm drive due to the fall, and through the power produced by itself, the minimum control in the emergency situation, the minimum communication, the minimum It can be used for magnetic relief. In particular, when magnetic levitation is used for low resistance contact, the best effect can be obtained with a simple structure.

In the related art, as the building becomes higher, the length and the number of ropes increase, and as the rope lengths and speeds increase, complicated and expensive advanced technologies must be applied, and accordingly, many problems can be exponentially derived. However, the present invention using the worm drive unit can sufficiently cope with the high rise by the installation of the worm support, and the installation cost and burden does not increase even if the high rise continues. In addition, it is very easy to control the low speed, high speed, acceleration, deceleration by adjusting the rotational speed of the worm drive unit.

The lifting device of the present invention does not need a machine room on the top floor, and the machine room on the top floor does not need to be separately provided, so that the utilization of the top floor can be increased even in the architectural design, and free design is possible even in the height limit of the building.

In addition, in the worm drive unit, the drive motor may be applied to the outside and inside of the worm gear body. When the drive motor is applied to the inside of the worm gear body, that is, when the housing of the drive motor is formed as the worm gear body, the weight and volume of the worm drive unit may be increased. While significantly reducing, the output and efficiency of the worm drive can be greatly increased.

When a ropeless lifting system is developed, several cabins on a single track can run continuously at regular intervals, like trains running on rails. There is no limit and it can eliminate the inconvenience of having to change the rope periodically.

In addition, since the worm drive unit and the cabin part move independently along the arrangement of the worm support, the cabin part may be moved in an inclined direction rather than in a vertical direction, or may be moved along a curved path rather than a straight line. If a shift structure is developed, driving may be realized not only in the vertical direction but also in the horizontal direction.

1 is a block diagram of a recirculating elevator system according to an embodiment of the present invention.
2 is a schematic diagram for explaining an elevator system of a building to which a circular elevator system is applied.
3 is an enlarged view illustrating an upper portion of the elevator system of FIG. 1.
4 is a plan view illustrating an upper portion of the elevator system of FIG.
5 is a configuration diagram illustrating the ropeless elevator of FIG. 1.
6 is a plan view for explaining a worm driving unit of the ropeless elevator of FIG.
FIG. 7 is a front view illustrating the worm driving unit of FIG. 5.
FIG. 8 is a plan view illustrating the elevator of FIG. 5.
9 is a cross-sectional view for explaining the interior of the worm drive unit.
10 is a view for explaining a worm driving unit according to another embodiment of the present invention.
11 is a configuration diagram for explaining the circulation elevator system according to another embodiment of the present invention.
12 is a top view of the elevator system of FIG.
FIG. 13 is an enlarged front view of the upper portion of the elevator system of FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments. For reference, the same numbers in this description refer to substantially the same elements and can be described with reference to the contents described in the other drawings under these rules, and the contents which are judged to be obvious to the person skilled in the art or repeated can be omitted.

1 is a configuration diagram of a recirculating elevator system according to an embodiment of the present invention, Figure 2 is a schematic diagram for explaining the elevator system of a building to which the circular elevator system is applied, Figure 3 is a top of the elevator system of Figure 1 It is an enlarged view for demonstrating a part, and FIG. 4 is a top view for demonstrating the upper part in the elevator system of FIG.

In Figure 1 (a) it can be seen that the circulating elevator system is shown from the front, (b) is shown from the side.

1 to 4, the circular elevator system 100 may assume a building including two or three or more lifting spaces. In the description of the present embodiment, the first lifting space 110 and the second lifting space 120 are described as a reference, and the first lifting space 110 is responsible for the lift of the elevator and the second lifting space 120 is the elevator. It is assumed that it is in charge of the descent, but it is also possible to operate three hoisting spaces or form them in various combinations.

The elevator system 100 includes a ropeless elevator 200 and a switch frame 300. In the present embodiment, the ropeless elevator 200 uses a worm drive, which may be desirable, and describes the advantages of using a worm drive. However, different driving methods, for example, a linear motor or a rack and pinion type rope, are described. A lease elevator can also be constructed.

The elevator 200 rises through the first lifting space 110, and the lifted elevator 200 may move to the second lifting space 120 or another lifting space by the switch frame 300. The switch frame 300 located at the upper end of the switch frame 300 is opened to enable the entry of the elevator 200, and after the position movement, enables the downward transmission of the elevator 200.

In addition, as shown, the elevator 200 descending along the second lifting space 120 may enter the other switch frame 300 at the bottom, the position by the switch frame 300 after entering After the change, it may move upward along the first lifting space 110 again.

In the present embodiment, the three switch frames 300 may be positioned at the upper or lower ends of the first lifting space 110 and the second lifting space 120 while horizontally circulating. In the upper case, when the elevator 200 enters one of the three switch frames 300, it moves to another lifting space, and after the movement, another switch frame 300 is located in the empty space to enter another elevator 200. You can do that. In addition, the elevator 200 moved at the same time can send the elevator 200 down in another lifting space.

In the present embodiment, the switch frame 300 is circulated in the clockwise direction, but can also buffer the elevator 200 continuously enters while circulating in the counterclockwise direction, and various rails such as a rotary rail and a square rail can be applied for this purpose. have.

Referring to FIG. 2, one or more circulating elevator systems may be provided in one building, and may be mixed with a non-circulating linear reciprocating elevator system.

The circulating elevator system may also be classified according to a high speed or a low speed circulation, and in the case of a high speed circulation or a high speed mobile elevator, it may be configured to pass through a certain number of floor units or a specific floor instead of all the floors.

In the case of the circulation type, several ropeless elevators 200 can move together in one lifting space, and because they move only in one direction, users can also quickly move between floors by minimizing waiting time.

Referring to FIG. 3, when the switch frame 300 is positioned on a specific lifting space, the joint 320 may protrude from a lower end or an upper end of the switch frame 300 so that the switch frame 300 may be engaged with the lifting space in the correct position. After the position binding, the elevator 200 may move smoothly by maintaining the state in which the main guide 470 and the extension guide in the shape of the worm support are aligned.

5 is a configuration diagram for explaining the ropeless elevator of FIG. 1, FIG. 6 is a plan view for explaining a worm driving unit of the ropeless elevator of FIG. 5, and FIG. 7 is a front view for explaining the worm driving unit of FIG. 5. 8 is a plan view for explaining the elevator of FIG.

5 to 8, the ropeless elevator 400 includes a cabin unit 410, a lifting frame 420, a worm drive unit 430, and a worm support unit 470, and the ropeless elevator 400 may include The cabin 410 may move along the lifting space in the building by the interaction between the worm driving unit 430 and the worm supporting unit 470. The ropeless elevator 400 may further include an independent controller 480, an air conditioner 485, a wireless communication module 490, and the like, and may smoothly drive and control the ropeless elevator 400.

The worm drive unit 430 includes a worm gear body 440 having a wormgear shape, and teeth 442 are formed on an outer surface of the worm gear body 440. The worm gear body 440 includes a rotating shaft arranged side by side in the ropeless elevator 400 in a traveling direction, and is rotatably mounted about the rotating shaft. The worm support portion 470 is provided in the lifting space corresponding to the teeth 442 of the worm gear body 440. In the present embodiment, the teeth 442 and the worm support portion 470 of the worm gear body 440 have the same polarity. Permanent magnets or electromagnets may be provided.

The worm driving unit 430 rotates the worm gear body 440 in the elevating device, and the tooth surface of the worm gear body 440 may receive a force that can rise without being in close contact with each other by the repulsive force with the worm support 470. As the worm gear body 440 rotates, it may rise or fall as if it slides together with the cabin part 410 in the injured state on the worm support part 470.

Since the cabin part 410 can be elevated using the worm drive part 430, it does not use the conventional rope or wire, and it does not need to install a hoist or a machine room on the uppermost floor. That is, using the worm driving unit 430 installed on the upper or lower portion of each room portion 410, it is possible to switch the rotation of the worm driving unit 430 to the vertical movement of the room portion 410 without depending on the rope. .

Therefore, the drive system of the ropeless elevator 400 is simplified, and by eliminating the rope, it is possible to eliminate the burden on the weight of the huge rope when applied to the skyscraper. In addition, the structure can also remove the burden on the smooth movement of the rope and counterweight hypothesis.

In terms of efficiency, it rotates instead of friction, so that rotation can be converted into potential energy without substantially losing energy. On the contrary, when descending, desired speed and control can be performed with minimum energy. In the case of initial acceleration, the presently developed drive motor can provide sufficient maneuverability, and the initial control, low speed maintenance, high speed maintenance and deceleration can be easily performed through motor control.

In response to one rotation of the worm gear body 440, the pitch of the support tooth of the worm support part 470 may be moved. Therefore, assuming that the pitch of the worm support part 470 is about 25 to 40 cm, the worm driving part 430 can provide a sufficient speed of about 500 to 800 m / min with only about 2000 rpm of rotation. That is, as shown on the left side, it is possible to easily implement the ultra-high speed elevator.

It is possible to easily implement a twin system that can move two or more cabin units 410 in one lifting space. Since no rope is used, two or more cabin parts 410 may be freely arranged in the same space, and the ropeless elevator 400 may be installed by using a wireless communication module 490 mounted on the mutual cabin part 410. Control can be easily performed. In particular, since there are no obstacles in the lifting space, the use of the wireless communication module 490 may be easier.

The ropeless elevator 400 according to the present exemplary embodiment may prevent an accident in which the cabin part 410 falls down forcefully even when a worst-case situation occurs in which power is cut off or the braking device is disabled. Due to the characteristics of the worm gear, even if it is descending, if the motor stops, the lowering of the motor can be smoothly decelerated, as well as physically stopped.Even if the lowering continues, the descending speed is maintained at a safe low speed. Can be protected safely.

The cabin 410 may be stably moved in the lifting space by the lifting frame 420, and the lifting frame 420 may be guided to move without shaking in the lifting space by using the roller 424 located at the corner. have. In this embodiment, the worm driving unit 430 is mounted on the support frame 426, the room portion 410 and the lifting frame 420 may move together by the worm driving unit 430. Of course, a rail having a T-shaped cross section parallel to the movement path of the compartment 410 may be formed as in the related art, and the compartment 410 may be moved along the T-shaped rail.

The lifting frame 420 protecting the cabin part 410 can be accommodated by moving together in the above-described switch frame 300, and the switch frame 300 also corresponds to the shape of the lifting frame 420 to rollers and rails. I can provide it.

The worm driving unit 430 may mount the drive motor and the transmission to the outside, but in the present embodiment, the worm gear body 440 may include a motor structure capable of generating a driving force therein. To this end, the worm gear body 440 may be provided in a hollow form, and both ends of the worm gear body 440 may be rotatably mounted using a bearing on a rotation shaft. In addition, it may include a stator 452 fixed to the rotating shaft for driving and a rotor 454 mounted on the inner surface of the worm gear body 440, the stator 452 and the rotor 454 of the magnet and coil Combinations, coils and coil combinations, and the like.

The tooth surface of the worm gear body 440 is supported by the roller 475 exposed as the upper surface of the support structure 472, and rides on the roller 475 of the worm support part 470 as the worm gear body 440 rotates. 410 may slide up or down as if sliding.

The worm support 470 may include magnets or electromagnets disposed at equal intervals, and rollers may be provided at or around the contact surface of the worm support 470. The roller may prevent direct contact with the tooth surface of the worm support part 470 and the worm gear body, and may prevent the magnet structure from being damaged at the mutual contact surface.

9 is a cross-sectional view for explaining the interior of the worm drive unit.

9, the driving module 450 formed inside the worm gear body 440 includes two pairs of stators and rotors. To this end, the worm gear body 440 may be provided in a hollow form. In the upper portion of the worm gear body 440, a coil stator 452 and a coil rotor 454 are provided as a coil-coil combination, and a coil stator 456 and a magnet rotor are provided as a coil-magnet combination. The former 458 may be provided. Of course, the coil rotor 454 may also be provided in the form of an iron core rather than a coil.

Two or more pairs of stators and rotors may be used to appropriately adjust the rotational torque and the rotational speed, and induction power generation may be expected due to the rotation of the worm gear body 440. For example, when the elevating device is lowered, power generation may be caused in the relative rotation of the stator and the rotor, and the energy may be efficiently used while repeating the elevating.

10 is a view for explaining a worm driving unit according to another embodiment of the present invention.

Referring to FIG. 10, when the electromagnet is used, power may be applied to the coils on the teeth of all the worm gear bodies, but this may result in excessive electric field generation and power consumption.

Therefore, as shown in the figure, the coil is vertically interlocked with the tooth surface of the worm, and power can be selectively applied to the electromagnet coil located at the vertical tooth surface. At this time, the lower connection terminal may be sequentially connected to or disconnected from the power source according to the rotation of the worm gear body.

One or more connection terminals connected to the power source may be provided, and the angle to which the power source is applied may also be variously changed, such as an angle of 10 ° or less to 3 to 40 ° or less.

Of course, the electromagnet coil may be mounted in the worm support in relation to the portion to which the power is applied, and power may be supplied corresponding to a specific position where the elevator is located, instead of supplying power to the supports in all the lifting spaces.

FIG. 11 is a schematic view illustrating a recirculating elevator system according to still another embodiment of the present invention. FIG. 12 is a plan view of the elevator system of FIG. 11, and FIG. 13 is an enlarged view of an upper portion of the elevator system of FIG. 11. It is the front view shown.

11 to 13, a turntable type, that is, a switch frame that rotates and rotates may be provided at an upper end and a lower end of the circulating elevator system. The upper portion of the switch frame is mounted on the turntable, and after the elevator enters the switch frame, the elevator, which rotates from the first lifting space, may be transferred to the second lifting space.

Since the door of the elevator can be rotated 180 degrees, the switch frame can be rotated 180 degrees while the turntable rotates, in which case the position of the door can be adjusted immediately. A fixing device may be provided to fix the posture in response to the turntable rotation before and after the turntable, and the joint may be selectively protruded from the lower end of the switch frame to fix the rotation.

According to another embodiment, three or more switch frames may be provided on one turn table or turn bar, and the elevator transport may be simply enabled in two or more lifting spaces according to the rotation of the switch frame.

As described above, although described with reference to the preferred embodiment of the present invention, those skilled in the art various modifications and variations of the present invention without departing from the spirit and scope of the invention described in the claims below I can understand that you can.

100: elevator system 110: first lifting space
120: 2nd lifting space 200,400: Lopris elevator
300: Switch frame

Claims

In a building including a first lifting space and a second lifting space, the elevator system for operating an elevator to circulate the first lifting space and the second lifting space,
A ropeless elevator moving along the first and second lifting spaces; And
And a switch frame provided on at least one of upper and lower ends of the first and second lifting spaces.
The switch frame is an elevator system, characterized in that for transporting the ropeless elevator between the first and second lifting space.

The method of claim 1,
The switch frame provided at the upper end of the first and second lifting space is the lower opening, the elevator system, characterized in that for transporting the ropeless elevator entered from the lower to another lifting space.

The method of claim 1,
The switch frame provided at the lower end of the first and second lifting space is the top of the elevator system, characterized in that for transporting the ropeless elevator entered from the top to another lifting space.

The method of claim 1,
The switch frame is an elevator system characterized in that the linear reciprocating movement to convey the ropeless elevator.

The method of claim 1,
The switch frame is a plurality of the horizontal circulation system elevator characterized in that for transporting the ropeless elevator.

The method of claim 1,
The switch frame is rotated horizontally and the elevator system characterized in that for conveying the ropeless elevator.

The method of claim 1,
The switch frame is an elevator system, characterized in that for switching the door position by rotating the ropeless elevator.

The method of claim 1,
And the switch frame includes a joint selectively protruding at an end for engagement with the first or second lifting space.

The method of claim 1,
The first and second lifting spaces include a main guide for transporting the ropeless elevator, and the switch frame further includes an extension guide detachably connected to the main guide for transporting the ropeless elevator. And the ropeless elevator is held together with the extension guide and is conveyed together with the switch frame.

10. The method of claim 9,
The ropeless elevator includes a car room moving along the first and second lifting spaces and a worm driving unit moving along with the room and having a rotation axis parallel to the moving path of the room.
The main guide and the extension guide includes a worm support part including a plurality of support teeth formed to correspond to the teeth of the worm drive part at intervals of teeth of the worm drive part.
And the worm drive and the worm support maintain low resistance contact.

The method of claim 10,
The worm drive unit and the worm support unit is an elevator system, characterized in that to maintain a low resistance contact by using the rolling contact.

The method of claim 10,
The worm drive unit and the worm support unit is an elevator system, characterized in that to maintain a low resistance contact by using a magnetic force.

The method of claim 12,
The worm drive unit and the worm support unit includes an electromagnet coil, the elevator system, characterized in that to maintain a low resistance contact by using the repulsive force or attraction between the electromagnet coil.

The method of claim 10,
The worm driving unit includes a worm gear body providing a tooth surface of the worm gear and a drive motor for rotating the worm gear body outside the worm gear body.

The method of claim 10,
The worm driving unit includes a worm gear body that provides a tooth surface of the worm gear and a driving unit for rotating the worm gear body inside the worm gear body, wherein the driving unit includes a stator and the stator mounted to the rotating shaft fixed to the cabin part. And a rotor mounted on an inner surface of the worm gear body, wherein the worm gear body rotates around the rotating shaft by the interaction of the stator and the rotor.

The method of claim 1,
An elevator system, characterized in that it further comprises a wireless communication module for communicating with the lifting device of the central control system or other cabin.