WO2005121008A1

WO2005121008A1 - Elevator apparatus

Info

Publication number: WO2005121008A1
Application number: PCT/JP2004/007979
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: EP1754680A4; EP1754680A1; CN1802308A; JPWO2005121008A1

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. The hoist (9) is disposed at the upper part of a space (5b) in which a balance weight (6) is vertically moved, and a return pulley (8a) for a car positioned above the car (2) is disposed between two sash pulleys (2a) and (2b) for the car installed on both sides of the car (2) within a vertically projected surface and a return pulley (8b) for the balance weight positioned above the balance weight (6) is disposed between two sash pulleys (6a) and (6b) for the balance weight installed on the balance weight (6) within a vertically projected surface. Thus, the car (2) and the balance weight (6) can be suspended by a roping method of 4:1.

Description

Specification

Elevator equipment

Technical field

The present invention relates to a 4: 1 rowing-type traction-type elevator apparatus 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 layout and installation position of the equipment to be used are greatly restricted due to the space saving of the elevator system. Therefore, it is not possible to increase the driving torque by installing a large hoisting machine. It has been difficult to increase the capacity of the data device.

[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 is arranged such that a hoist is arranged above a gap where a counterweight is lifted and lowered, and a car return wheel above the car is vertically projected. The upper, the force, the two countercars on the upper side of the counterweight between the two car hoists on the upper sides of the car, and the counterweight return wheel above the counterweight on the vertical projection plane. The power beams and the counterweight are suspended in a 4: 1 roving system by placing them between weight suspension wheels.

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.

FIG. 3 is a front view showing a second embodiment of the elevator apparatus according to the present invention.

FIG. 4 is a plan view showing a second 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 car 2 is supported by a pair of car guide rails 4 erected so as to face each other over the range in which it can be raised and lowered. The horizontal movement of the car is restricted, and gaps 5a and 5b are formed between the hoistway walls lb and lc, which are opposite to each other across the hoistway wall la, and both sides of the car 2, respectively. Have been. The cage 2 is supported by a rectangular frame-shaped force (not shown) provided to surround the central portion of each of the side surfaces, the upper surface, and the lower surface. A guide roller (not shown) or the like provided on the vertical frame is engaged with a car guide rail 4 disposed on both sides of the force 2. In addition, a force provided above the elevator car 2 and provided from one side of the hoistway wall lb side of the car 2 to the other side of the hoistway wall lc side ^ The upper frame (not shown) of the car 2 Two car suspension wheels 2a and 2b are rotatably provided at a position above one side surface and another side surface of the car 2. In the two car suspension wheels 2a and 2b, the respective rotation axes are orthogonal to the hoistway wall la, and the rope grooves formed on the outer peripheral surface thereof are substantially linear on the vertical projection surface. It is arranged so that it becomes.

[0010] A counterweight 6 that moves up and down in the hoistway 1 in the direction opposite to the car 2 is provided on the hoistway wall lc side having a width larger than the gap 5a formed on the hoistway wall 1b side of the car 2. It is arranged close to the hoistway wall Id on the back side facing the hoistway wall la so as to move up and down the gap 5b. 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. It is arranged so as to be located at a substantially middle portion in the depth direction of the chin 2. The counterweight 6 is supported by a substantially square annular counterweight frame (not shown), and a guide shoe (not shown) provided on the vertical frame of the counterweight is used to raise and lower the counterweight ₆ . Road wall; side and _{1 (} engaged with the counterweight guide rail 7 arranged on the i side. Located above the counterweight 6 and passed from the hoistway wall la side of the counterweight 6 to the Id side. In the upper frame (not shown) of the provided counterweight frame, two counterweight suspension wheels 6a and 6b are rotatably provided at the end of the hoistway wall la side and at the Id side. The two counterweight suspenders 6a and 6b have their rotation axes parallel to the hoistway wall la, and the rope grooves formed on the outer peripheral surface thereof are substantially parallel to the vertical projection plane. They are arranged in a straight line.

[0011] Further, a fixed body such as a hoistway beam installed on the top of the hoistway 1 has a force and a return wheel 8a directly above the car 2 and a counterweight return directly above the counterweight 6. Each car 8b rotates It is provided as possible. Here, the return wheel 8a has a rotation axis that is substantially parallel to the rotation axes of the car suspension cars 2a and 2b that are orthogonal to the hoistway wall la, It is arranged between the suspension wheels 2a and 2b, and the rope groove formed on the outer peripheral surface thereof is arranged substantially in line with the rope groove formed on the outer peripheral surface of the car suspension vehicles 2a and 2b. . On the other hand, the counterweight return wheel 8b has a rotation axis substantially parallel to the rotation axis of the balance weight suspension wheels 6a and 6b, and is relative to the rotation axis of the car suspension wheels 2a and 2b and the car return wheel 8a. Are arranged so as to be orthogonal to each other. The counterweight return wheel 8b is disposed on the vertical projection surface between the counterweight suspension wheels 6a and 6b, and the rope groove formed on the outer peripheral surface of the counterweight suspension wheel 8b is provided for the counterweight suspension wheels 6a and 6b. It is arranged so as to be substantially linear with the rope groove formed on the outer peripheral surface. Also, on the hoistway wall lc side at the top of the hoistway 1, that is, on the top of the hoistway 1 above the gap 5b where the counterweight 6 rises and falls, a drive sheave 9a having a rope groove formed on the outer peripheral surface, A gearless hoisting machine 9 having a motor section 9b having a slightly larger diameter than the car 9a is installed. Here, the gearless hoisting machine 9 is configured such that the rotating shaft of the drive sheave 9a having a diameter substantially equal to that of the hoisting wheel or the return wheel provided in the hoistway 1 is used for the hoisting wheels 2a and 2b and the car. The drive sheave 9a is arranged substantially parallel to the rotation axis of the return sheave 8a, and the motor 9b for driving the drive sheave 9a is arranged on the hoistway wall la side of the drive sheave 9a. . In addition, the drive sheave 9a has, on a vertical projection surface, a substantially straight line with the sheave grooves of the power hoisting sheaves 2a and 2b and the sheave grooves of the car return sheave 8a, and has a hoistway wall lb. The side end is almost directly above the hoistway wall lc side end of the car hoist 2b, and the hoistway wall lc side end is almost directly above the hoistway wall la side end of the counterweight suspender 6a. It is arranged to be located.

The main rope 10 that suspends the basket 2 and the counterweight 6 in a fishing bottle manner as described above has one end of the main rope 10 that is located almost directly above the end on the lb side of the hoistway wall of the car suspension car 2a. It is elastically fixed to the fixed body at the top of the road 1 via the force ^: side stopper 10a. Then, from the car side stopper 10a side, a force, a lifting wheel 2a, a force, a returning wheel 8a, a lifting wheel 2b, a driving sheave 9a, a counterweight lifting wheel 6a, a counterweight return wheel 8b. And the other end is wound on the top fixed body of the hoistway 1, which is almost directly above the end of the hoistway wall Id side of the hoisting weight 6b for the counterweight. It is elastically fixed via the stopper 10b. That is, car 2 and counterweight 6 are 4: 1 roving The hoist is suspended in the hoistway 1 at a speed 1/4 of the rotation speed of the drive sheave 9a. The main rope 10 has excellent characteristics in bending life and traction capacity in order to correspond to a hoisting wheel, a return sheave, and a drive sheave 9a having a small diameter. Those with resin coating and high friction coefficient are used.

According to the first embodiment of the elevator apparatus according to the present invention, since the suspension is performed by the force 2, the counterweight 6, and the force S4: l roving method, the diameter of the drive sheave 9 a is The same level of driving torque can be obtained with 1/4 of the 1: 1 roving method and 1/2 of the 2: 1 roving method. For this reason, the gearless hoisting machine 9 can be downsized. For example, the diameter of the drive sheave 9a can be reduced to about 200 mm, and the diameter of the motor section 9b can be reduced to about 300 mm. When the gearless hoisting machine 9 is downsized in this way, even in a space-saving elevator apparatus, the gearless hoisting machine 9 is arranged such that the rotation axis of the drive sheave 9a is orthogonal to the hoistway wall la. At the top of the hoistway 1. That is, it is possible to install the gearless hoisting machine 9 in accordance with the position of the trolley hoisting wheel 2b provided on the upper frame of the car frame and the counterweight hoisting wheel 6a provided on the upper frame of the balancing weight frame. It becomes. This makes it possible to configure the 4: 1 roving method by minimizing the length of the main rope 10 and the number of hanging cars, etc., and to use a cage to support the hanging cars 2a and 2b. The configuration that does not need to be newly installed in 2 can be simplified. In the first embodiment, the machine room less elevator apparatus has been described. However, it goes without saying that the same effect can be obtained in an elevator apparatus having a machine room above the hoistway 1. In addition, in order to match the position of the drive sheave 9a of the gearless hoisting machine 9 with the car hoist 2b and the counterweight hoist 6a, the rotation axis of the drive sheave 9a is changed to the car hoists 2a and 2b and the car turnover. Even if the vehicle is arranged so as to have a predetermined angle with respect to the rotation axis of the vehicle 8a, the same effect as in the first embodiment can be obtained.

Example 2

FIG. 3 is a front view showing a second embodiment of the elevator apparatus according to the present invention, and FIG. 4 is a plan view thereof. In the figure, an upper frame of a car frame (not shown) supporting the elevator car 2 has two car suspension wheels 2 at positions above one side and the other side of the power beam 2. a and 2b are provided rotatably. Further, on the fixed body at the top of the hoistway 1, two car return wheels 8c and 8d are provided directly above the car 2 so as to be rotatable, respectively. Here, the power return carts 8c and 8d have a rotation axis that is substantially parallel to the rotation axes of the car suspension cars 2a and 2b that are orthogonal to the hoistway wall la. It is arranged between the car hoists 2a and 2b, and the rope grooves formed on the outer peripheral surface thereof are arranged so as to be substantially linear with the rope grooves formed on the outer peripheral surfaces of the power hoisting cars 2a and 2b. Te, ru.

On the other hand, on the upper frame of the counterweight frame (not shown) supporting the counterweight 6, two counterweight suspension wheels 6 a and 6 b are pivoted on the hoistway wall la side and the Id side end. It is provided as possible. The two counterweight suspension wheels 6a and 6b have a rotation axis substantially parallel to the rotation axis of the counterweight return wheel 8b provided at the top of the hoistway 1, and the force and the suspension wheels 2a and 2b In addition, they are arranged so as to be orthogonal to the rotation axes of the car return wheels 8c and 8d. The counterweight return wheel 8b is disposed on the vertical projection surface between the counterweight suspension wheels 6a and 6b, and has a rope groove force formed on its outer peripheral surface. The outer peripheral surface of the counterweight weight suspension wheels 6a and 6b. It is arranged so as to be substantially linear with the rope groove formed in the above.

The gearless hoisting machine 9 arranged on the hoistway wall 1c at the top of the hoistway 1 has a rotating shaft whose rotation axis is substantially equal to that of the power hoisting wheels 2a and 2b and the car return wheels 8c and 8d. They are arranged so as to be parallel. Further, in this gearless hoisting machine 9, the ropes of the drive sheave 9a are substantially in line with the ropes of the power pulleys 2a and 2b and the ropes of the car return sheaves 8c and 8d on the vertical projection surface. And the hoistway wall lb side end is almost directly above the hoistway wall lc side end of the car hoist 2b, and the hoistway wall lc side end is the counterweight hoisting wheel 6a. It is arranged so as to be located almost directly above the la-side end.

[0017] The main ropes 10 for suspending the car 2 and the counterweight 6 in a fishing bottle manner configured as described above are provided with a force, a hanging car 2a, a force, and a return car from the car side stopper 10a side. 8c and 8d, a car suspension wheel 2b, a drive sheave 9a, a counterweight suspension wheel 8a, a counterweight return wheel 8b, and a counterweight suspension wheel 6b.

[0018] According to the second embodiment of the elevator apparatus according to the present invention, even when the width of the force 2 is very large with respect to the diameter of the suspension vehicle or the return vehicle, the simple configuration of 4: 1 roving. It is possible to realize a type of elevator system. Other configurations are the same as in the first embodiment. And has an effect.

Industrial applicability

As described above, according to the present invention, the elevator apparatus of the 4: 1 roving method can reduce the size of the hoisting machine and simplify the overall configuration. Also in the device, it is possible to easily realize a large capacity.

Claims

The scope of the claims

[1] A car for ascending and descending in an elevator hoistway, two car suspension wheels respectively rotatably provided on both upper sides of the car, and rotatably provided on the hoistway top above the car. A car return wheel disposed between the two car suspension vehicles on a vertical projection plane, a balancing weight for moving up and down a hoistway wall on one side of the car and a gap formed between the cars, and Two counterweight suspenders rotatably provided above the counterweight, and two counterweights rotatably provided at the top of the hoistway above the counterweight and on a vertical projection plane. A balance wheel and a weight return wheel disposed between the weight suspension sheaves, and a rotatable drive sheave provided at the top of the hoistway above the gap where the balance and the weight rise and fall. A 4: 1 roving type elevator apparatus comprising a hoisting machine.

[2] The two car suspension wheels, the car return sheave, and the drive sheave have their respective rotation axes arranged in parallel and their respective sheave grooves arranged in a straight line on the vertical projection plane. The 4: 1 roving type elevator apparatus according to claim 1, characterized in that:

[3] The counterweight lifting wheel and the counterweight return wheel are arranged such that their respective rotation axes are orthogonal to the rotation axes of the car suspension wheel and the power return wheel, and The 4: 1 roving type elevator apparatus according to claim 1 or 2, wherein the grooves are arranged linearly on a vertical projection plane.

[4] The four-to-one according to any one of claims 1 to 3, wherein the two car suspension wheels are provided on an upper frame of the frame that supports the force ^. Roving type elevator equipment

[5] The elevator apparatus of the 4: 1 roving system according to any one of claims 1 to 4, comprising a plurality of return wheels.

[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. Crab described

4: 1 Roving type elevator system.

[7] The elevator apparatus according to any one of claims 1 to 6, wherein the hoisting machine is provided at the top of the hoistway.