WO2005121009A1

WO2005121009A1 - Elevator apparatus

Info

Publication number: WO2005121009A1
Application number: PCT/JP2004/007980
Authority: WO
Inventors: Shigeru Abe
Original assignee: Mitsubishi Denki Kabushiki Kaisha
Priority date: 2004-06-08
Filing date: 2004-06-08
Publication date: 2005-12-22
Also published as: EP1754681A1; JPWO2005121009A1; EP1754681A4; CN1802309A

Abstract

A space-saved elevator apparatus enabling an increase in capacity by reducing the size of a hoist (9) and simplifying the overall structure thereof. A return pulley (9a) for a car having a rotating shaft parallel with a sash pulley (2a) for the car positioned above the car (2) and having a pulley groove in alignment with the pulley groove of the sash pulley (2a) for the car within a vertically projected surface is disposed above the car (2) and a return pulley (9b) for the balance weight having a rotating shaft parallel with the sash pulley (6a) for the balance weight positioned above the balance weight (6) and having a pulley groove in alignment with the pulley groove of the balance weight within a vertically projected surface is disposed above the balance weight (6). Also a hoist (10) and a deflector pulley (11) are disposed at the top part of a hoistway in alignment with the positions of the sash pulley (2a) for the car and the sash pulley (6a) for the balance weight. Thus, the car (2) and the balance weight (6) can be suspended by a roping method of 3:1.

Description

Specification

Elevator equipment

Technical field

The present invention relates to a 3: 1 rowing-type traction elevator system in which an elevator car and a counterweight are suspended by a main rope.

Background art

[0002] In recent years, in order to use a building as efficiently as possible, an elevator device has a vertical projection area of a machine room installed above a hoistway approximately equal to a vertical projection area of a hoistway. The equipment installed in the room is placed in the hoistway to eliminate the need for the machine room, thereby saving space. However, the space saving of the elevator system places great restrictions on the layout and installation position of the equipment used, so it is not possible to increase the driving torque by installing a large hoisting machine. It has been difficult to increase the capacity of a personal computer.

[0003] On the other hand, in order to cope with an increase in the capacity of an elevator device, in addition to a method of increasing the driving torque of a hoist, a roping method of a main rope for suspending an elevator car and a counterweight is used. What can be realized is also conceivable. For example, a traction sheave elevator disclosed in Japanese Patent Application Publication No. 2000-153975 discloses a traction-type elevator device in which a force and a counterweight are suspended by a 4: 1 roving method. When suspending the force ^ and the counterweight by the 4: 1 roping method, the driving torque required for the hoisting machine is, for example, 1/4 for the 1: 1 roving method, and 2: 1 for the roving method. Since it can be reduced to 1Z2, it is possible to realize a large-capacity elevator system without installing a large hoist. However, in the 4: 1 roving method, the moving distance of the main rope becomes much longer than the moving distance of the power and the car, and the number of hanging and returning vehicles that fold the main rope increases. There has been a problem that the arrangement becomes very complicated.

[0004] It is an object of the present invention to provide a traction-type elevator apparatus capable of coping with a large-capacity elevator in a space-saving elevator apparatus by reducing the size of the winding machine and simplifying the configuration. To provide. Patent Document 1: Japanese Patent Application Laid-Open No. 2000-153975

Disclosure of the invention

[0006] In order to achieve the above object, an elevator apparatus according to the present invention has a rotation axis parallel to a car suspension car at an upper part of a car, and has a car suspension car rope on a vertical projection plane. A car return wheel having a groove and a straight rope groove is provided above the car, and has a rotation axis parallel to the counterweight suspender above the counterweight, and is positioned on the vertical projection plane. A counterweight return wheel having a rope line straight with the rope groove of the weight suspension wheel is arranged above the counterweight, and a hoisting machine and a deflector wheel having rotation axes parallel to each other are attached to the car suspension wheel and the counterbalance. The car and the counterweight are suspended in a 3: 1 roving system by placing them at the top of the hoistway in accordance with the position of the weight suspender.

Brief Description of Drawings

FIG. 1 is an overall configuration diagram showing a first embodiment of an elevator apparatus according to the present invention.

FIG. 2 is a plan view showing a first embodiment of the elevator apparatus according to the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION

[0008] In order to explain the present invention in more detail, the present invention will be described with reference to the accompanying drawings. In each of the drawings, the same or corresponding portions are denoted by the same reference characters, and a repeated description thereof will be simplified or omitted as appropriate.

Example 1

FIG. 1 is an overall configuration diagram showing a first embodiment of an elevator apparatus according to the present invention, and FIG. 2 is a plan view thereof. In the figure, a car 2 that rises and descends in an elevator hoistway 1 that has a substantially square cross section is connected to the elevator hall on each floor of the building and the hoistway 1 on the hoistway wall la side where a hall entrance 3 is provided. Are located in The horizontal movement of the chin 2 is restricted by a pair of car guide rails 4 erected so as to face each other over the range in which the chin can be raised and lowered. There are slight gaps 5a and 5b between the hoistway walls lb and lc and the car 2 Is formed. In addition, the car 2 is supported by a square ring-shaped power frame (not shown) provided so as to surround the central portion of each of the side surfaces, the upper surface, and the lower surface, and is provided on the vertical frame of the car frame. The provided guide rollers (not shown) and the like are guided in the vertical direction by engaging with the car guide rails 4 arranged so as to pass through the gaps 5a and 5b on both sides of the car 2. In addition, the force provided from the upper side of the hoistway wall lb side to the upper side of the hoistway wall lc side of the force 2, and the upper frame (not shown) of the frame can be rotated by the force and the lifting wheel 2 a. It is provided in. The car suspension car 2a has a rotation axis parallel to the hoistway wall la, and is disposed above the center of the car 2.

[0010] A counterweight 6 that moves up and down in the hoistway 1 in the direction opposite to the car 2 is between the hoistway wall Id and the car 2 on the back side facing the hoistway wall la with the car 2 interposed therebetween. It is arranged so as to move up and down the gap 5c formed at the bottom. That is, since a sufficient distance is not provided between the car 2 and the hoistway wall Id, the counterweight 6 has a structure that is longer in the width direction than in the depth direction of the car 2. The horizontal movement of the counterweight 6 is restricted by a pair of counterweight guide rails 7 erected so as to face each other over the range in which the counterweight can be raised and lowered. The counterweight 6 is supported by a counterweight frame (not shown) having a substantially rectangular ring shape, and a guide shoe (not shown) provided on a vertical frame of the counterweight is provided on both sides of the counterweight 6. By being engaged with the counterweight guide rail 7 arranged in the vertical direction, it is guided in the vertical direction. A counterweight suspending wheel 6a is rotatably provided at an end of the hoistway wall lc on an upper frame (not shown) of the counterweight frame provided above the counterweight 6. The counterweight suspender 6a has a pivot axis orthogonal to the pivot axis of the power suspender 2a substantially parallel to the longitudinal direction of the counterweight 6, and the hoistway wall lc side end is The cage 2 is arranged so as to be located substantially at the center in the width direction.

[0011] Further, in a machine room 8 provided at the top of the hoistway 1 and having a vertical projected area substantially the same as the vertical projected area of the hoistway 1, a car return wheel 9a is provided immediately above the power goose 2, Immediately above the counterweight 6, a counterweight return wheel 9b is rotatably provided. Here, the car return wheel 9a has a rotation axis that is substantially parallel to the rotation axis of the force and the suspension car 2a, and the vertical path on the vertical projection plane is higher than that of the force and the suspension car 2a. In addition to being placed on the wall la side, the rope groove formed on the outer peripheral surface is substantially in line with the rope groove formed on the outer peripheral surface of the car hoist 2a. It is arranged as follows. Further, the end of the power return wheel 9a on the hoistway wall Id side is disposed so as to be located substantially immediately above the center of the car suspension vehicle 2a. On the other hand, the return wheel 9b for the counterweight is substantially parallel to the rotation axis of the suspension wheel 6a for the counterweight and orthogonal to the rotation axes of the suspension wheel 2a and the return wheel 9a. It has a moving axis and is arranged on the hoistway wall lb side of the counterweight suspender 6a on the vertical projection surface, and a rope groove formed on its outer peripheral surface is formed on the outer peripheral surface of the counterweight suspender 6a. It is arranged so as to be substantially in line with the formed rope groove. The machine room 8 includes a drive sheave 10a having a sheave groove formed on the outer peripheral surface thereof, and a gearless hoisting machine 10 having a motor portion 10b for controlling the rotation of the drive sheave 10a in an arbitrary direction and at any speed. And a deflector car 11 are installed. Here, the drive sheave 10a of the gearless hoisting machine 10 has substantially the same diameter as the suspension sheave and return sheave provided in the hoistway 1, and has a force pulling sheave 2a and a car return sheave 9a. It has a rotation axis substantially parallel to the rotation axis. In addition, the drive sheave 10a has, on the vertical projection surface, its rope groove almost in line with the rope groove of the car suspension sheave 2a and the rope groove of the car return sheave 9a, and the end of the hoistway wall la side. However, it is arranged on the hoistway wall Id side of the rickshaw 2a so as to have a predetermined distance from the hoistway wall Id side end of the ram 2a. On the other hand, the deflector sheave 11 has a rotation axis substantially parallel to each rotation axis of the drive sheave 10a, the car suspension wheel 2a, and the car return wheel 9a, and is formed on the outer peripheral surface thereof. The rope grooves are arranged on the vertical projection plane so as to be substantially in line with the respective rope grooves of the power dropper 2a, the car return wheel 9a, and the drive sheave 10a. Further, the end of the hoistway wall Id side is arranged and positioned so as to be located almost immediately above the end of the hoistway wall lc side of the counterweight suspender 6a.

One end of the main rope 12 for hanging the basket 2 and the counterweight 6 in a fishing bottle manner as described above has a force, a force for supporting the rotating shaft of the suspension car 2a, and It is sexually fixed to the frame via the force ^: side stopper 12a. Then, the main rope 12 is, from the side of the force, the side stopper 12a, the force ^: the return wheel 9a, the force, the suspension wheel 2a, the drive sheave 10a, the deflector wheel 11, the suspension weight for the counterweight 6a, the counterweight. The other end portion is wound around the return wheel 9b in sequence, and the other end is elastically fixed to the upper frame of the counterweight frame that supports the counterweight 6 via the counterweight side stopper 12b. Here, the main rope 12 is a counterweight from the force, the part from the stopper 12a to the force, the end of the return wheel 9a to the end of the hoistway wall Id side, and the deflector wheel 11 from the end of the hoistway wall Id side. The part extending from the hoistway wall 6c end of the hoisting wheel 6a to the end of the hoistway wall 1b side of the counterweight return wheel 9b from the end of the hoisting road wall 1b side of the counterweight weight return wheel 9b is substantially vertical. It is located at In addition, the portion from the end of the hoistway wall la side of the car return car 9a of the main rope 12 to the end of the hoistway wall la side of the car suspension car 2a, the force, the end of the hoistway wall Id side of the car suspension car 2a From the section to the end of the drive sheave 10a on the side of the hoistway wall la, so that it is symmetrical with respect to a vertical plane having the axis of rotation of the force sheave 2a. Are arranged so as to have a predetermined angle.

[0013] As described above, the car 2 and the counterweight 6 are suspended by the main rope 12 in a 3: 1 roving manner, and the speed in the hoistway 1 is 1Z3 with respect to the rotation speed of the drive sheave 10a. Up and down. The main cable 12 has excellent bending life and traction capability in order to be compatible with a hoisting wheel, a return sheave, and a drive sheave 10a having a small diameter.For example, the core wire made of steel is coated with a resin. And a material having a high coefficient of friction is used.

According to the first embodiment of the elevator apparatus according to the present invention, since the car 2, the counterweight 6, and the force 1 are suspended by a roving method, the diameter of the drive sheave 10 a is reduced by 1: 1. The same driving torque can be obtained even when the ratio is 1/3 in the case of the roving system and 1 / 1.5 in the case of the 2: 1 roving system, and the gearless winding machine 10 can be reduced in size. By reducing the size of the gear hoist 10 in this way, it is possible to install the gearless hoist 10 and the deflecting wheel 11 in the machine room 8 having a vertical projection area substantially equal to that of the hoistway 1. Become. That is, the gearless hoisting machine 10 and the deflecting wheel 11 are installed in accordance with the positions of the power hoisting wheel 2a provided on the upper frame of the car frame and the balancing weight hoisting wheel 6a provided on the upper frame of the balancing weight frame. Putting power S can. Therefore, the length of the main ropes 12 and the number of hanging cars can be minimized to form a 3: 1 port / single-bing system, and a fixed body for supporting the power hanging cars 2a is used as a car 2 It is possible to simplify the configuration which does not need to be newly installed. In the first embodiment, the force S described in the case where the machine room 8 having a vertical projected area substantially equal to that of the hoistway 1 is installed at the top of the hoistway 1, and the machine room-less elevator device is used. However, it is needless to say that the same effect as in the first embodiment can be obtained by installing the gearless hoisting machine 10, the deflector 11 and the like in the hoistway 1. The positions of the drive sheave 10a and the deflecting sheave 11 of the gearless hoisting machine 10 are changed to the car suspension wheel 2a and the counterweight suspension wheel 6a. Even if the rotation axis of the drive sheave 10a is arranged so as to have a predetermined angle with respect to the rotation axes of the car suspension sheave 2a and the car return sheave 9a, the first embodiment It is possible to obtain the same effect as.

Industrial applicability

As described above, according to the present invention, the elevator apparatus of the 3: 1 roving system can reduce the size of the hoisting machine and simplify the entire configuration, thereby saving space in the elevator. Also in the device, it is possible to easily realize a large capacity.

Claims

The scope of the claims

[1] An elevator hoist, which is rotatably provided at the top of the car, and a force for raising and lowering the elevator hoistway, and the car is rotatably provided at the top of the hoistway above the car. The car has a pivot axis parallel to the pivot axis of the hoisting car, and the rope of the rope, the force, the force arranged in a straight line with the rope groove of the hoisting car on the vertical projection surface, A car, a counterweight for raising and lowering the car in the hoistway in the opposite direction, a counterweight suspender rotatably provided above the counterweight, and a hoistway top above the counterweight. The balance weight suspension wheel has a rotation axis parallel to the rotation axis of the counterweight suspension wheel, and its rope groove is formed on a vertical projection plane. A counterweight return wheel arranged in a straight line with the hoistway A hoist having a moving sheave, and a rotating shaft provided at the top of the hoistway, the rotating shaft being parallel to the rotating shaft of the driving sheave; A 3: 1 roving type elevator apparatus, comprising: a sheave groove of a drive sheave; and a deflector wheel arranged in a straight line.

[2] The 3: 1 roving type elevator apparatus according to claim 1, wherein the counterweight moves up and down a gap formed between the hoistway wall and the car on the back side.

[3] The counterweight lifting wheel and the counterweight return wheel are characterized in that their respective rotation axes are arranged so as to be orthogonal to the rotation axes of the car suspension wheel, the force and the return wheel. 3. A 3: 1 roving type elevator apparatus according to claim 1 or 2.

[4] The drive sheave and the deflecting sheaves are such that their respective rotation axes are arranged in parallel to the rotation axes of the car suspension wheel and the car return wheel, and the respective sheave grooves are positioned on the vertical projection plane. 3. The 3: 1 roving type elevator apparatus according to claim 3, wherein the elevator car is arranged in a straight line with respect to the ropes of the car suspension car, the power and the return car.

[5] The power transmission device according to any one of claims 1 to 4, wherein the suspension vehicle is provided on the upper frame of the frame, the force for supporting the vehicle, and the force for supporting the vehicle. : 1 roving type elevator device.

[6] The main rope for suspending a car and a counterweight, the surface of which is made of resin and which has a high coefficient of friction is applied. The 3: 1 roving type elevator device described in or. [7] The 3: 1 roving-type machine room-less elevator device according to any one of claims 1 to 6, wherein the hoisting machine is provided in a hoistway.