JP2005008378A - Elevator device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elevator device capable of having traction angle of 180 degrees even if a thin type hoisting machine for an elevator, which does not require a machine room, is provided in an existing machine base provided in a machine room in the case of repairing an upper part machine room type elevator device, which is provided with the machine room in an upper part of a hoistway, by using an existing car guide rail and an existing counter weight guide rail. <P>SOLUTION: This elevator device is provided with a hoisting rope, of which one end suspends a car elevating in a hoistway along the existing car guide rail and of which the other end suspends the counter weight elevating in the hoistway along the existing counter weight guide rail, two thin type hoists, which are provided in the existing machine base provided in the machine room in an upper part of the hoistway with the predetermined space and around which the hoisting rope is wrapped, and a turn transmitting means respectively provided in each of the two thin winders to synchronously link both the hoists. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an upper machine room type elevator apparatus.
[0002]
[Prior art]
In a conventional elevator system with a drive unit installed at the upper part of the hoistway, the drive unit of a traction sheave elevator without a machine room is projected on the roof of the building with the same hoistway dimensions as an elevator with a conventional machine room. In order to have a mounting structure that firmly supports the drive device without providing a portion, the drive device has a traction sheave (hoist sheave) that engages with a suspension rope (winding rope) at both ends. In some cases, a driving device is disposed on a support beam that integrally connects a pair of guide rails for a car (car) and a pair of counterweight guide rails (see, for example, Patent Document 1).
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 11-139730
[Problems to be solved by the invention]
Since the elevator apparatus described in Patent Document 1 has a mounting structure that firmly supports a driving device such as a hoisting machine, a drive beam is driven by a support beam that integrally connects a pair of car guide rails and a counterweight guide rail. Although it has the structure which arrange | positions an apparatus, since the drive device is installed in the guide rail, the load will act on four guide rails altogether. When refurbishing an elevator using an existing guide rail, the method of installing the drive unit on the upper part of the guide rail as described above cannot support the load acting on the hoisting rope with the existing guide rail. In some cases, it was necessary to change the size of the guide rail. In order to reduce the load acting on the guide rail, the load acting on the hoisting rope can be reduced by installing a driving device such as a hoisting machine on the existing machine base in the machine room provided in the upper part of the hoistway. A refurbishment method is also conceivable in which the hoisting machine is applied to the building via a machine base. However, in such a method, the hoisting machine and the deflecting wheel are used for adjusting the suspension position of the car and the counterweight. Since the angle is smaller than 180 degrees, there is a problem that a thin hoisting machine for a machine room-less elevator that requires a traction angle of 180 degrees cannot be used.
[0005]
The present invention has been made to solve the above-described problems, and uses an existing car guide rail and an existing counterweight guide rail, and an upper machine having a machine room at the upper part of a hoistway. When refurbishing a room type elevator device, an elevator device capable of having a traction angle of 180 degrees even if a thin hoisting machine for a machine room-less elevator is installed on an existing machine base provided in the machine room Is to provide.
[0006]
[Means for Solving the Problems]
The elevator apparatus according to the present invention has one end suspended from a car that moves up and down a hoistway along an existing car guide rail, and the other end at a counterweight that moves up and down the hoistway along an existing counterweight guide rail. A hoisting rope in which the hoisting rope is suspended, two thin hoisting machines that are installed at predetermined intervals on an existing machine base provided in the machine room above the hoistway, and on which the hoisting rope is wound, Each of these two thin hoisting machines is provided with a rotation transmitting means for synchronizing and interlocking both hoisting machines.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
1 is a longitudinal sectional view of an elevator apparatus according to Embodiment 1 of the present invention, and FIG. 2 is a plan view of a machine room. In the figure, a car 10 and a counter weight 11 respectively guided by an existing car guide rail and an existing counterweight guide rail are connected by a hoisting rope 8 via two hoisting machine sheaves 12a and 12b described later. It is suspended in a fishing bottle type, and moves up and down the hoistway 9. At the upper part of the hoistway 9 is a machine room 1 in which a drive device for an upper machine room type elevator is installed before the refurbishment, and a machine in which the drive device before the renovation is fixed to the lower part of the machine room 1 A stand 2 is installed. A hoisting machine attachment 7 is fixed to the upper part of the machine base 2, and the car 10 and the counterweight 11 are wound and lowered by traction with the hoisting rope 8 on the upper part of the hoisting machine attachment 7. Two thin hoisting machines 3a and 3b for machine room-less elevators provided with hoisting machine sheaves 12a and 12b, respectively, are installed. Here, the installation positions of the two thin hoisting machines 3a and 3b are adjusted according to the hanging position of the car 10 and the counterweight 11 guided by the existing guide rails, and are provided in the thin hoisting machines 3a and 3b. A hoisting rope 8 is wound around the hoisting machine sheaves 12a and 12b. The thin hoisting machines 3a and 3b are provided with interlocking chain sprockets 5 having the same rotation center as the hoisting machine sheaves 12a and 12b. A winding machine interlocking chain 4 for synchronizing the thin hoisting machines 3 a and 3 b is wound around the interlocking chain sprocket 5, and the rotation is transmitted between the hoisting machine interlocking chain 4 and the interlocking chain sprocket 5 described above. Means. Further, on the hoisting machine attachment 7 between the thin hoisting machines 3a and 3b, a speed feedback device 6 that is interlocked with the hoisting machine interlocking chain 4 is installed. Is detected and returned to the thin hoisting machines 3a and 3b.
[0008]
According to the first embodiment of the present invention, the thin hoisting machines 3a and 3b for machine room-less elevators, which are produced in a relatively large amount, are installed inside the machine room 1 provided in the upper part of the hoistway. . Therefore, loads such as the car 10 and the counterweight 11 that are hung on the hoisting rope 8 can be applied to the building via the machine base 2 without being applied to the existing guide rail. At the same time, by adjusting the installation interval of the two thin hoisting machines 3a and 3b on the hoisting machine mounting bracket 7, the suspension position of the car 10 and the counterweight 11 can be adjusted to the existing guide rail. The existing guide rail can be used without the need for repairing the guide rail. The hoisting rope 8 is wound around the hoisting machine sheaves 12a and 12b of the two thin hoisting machines 3a and 3b synchronized by the hoisting machine interlocking chain 4, so that the traction angle is 2 It is possible to use a thin hoisting machine that can have 180 degrees and requires a traction angle of 180 degrees. Furthermore, since the driving force and the suspension load can be dispersed by the two thin hoisting machines 3a and 3b that are synchronized with the chain, it is possible to use a hoisting machine and a control device that are compact and have a low output.
[0009]
Moreover, since the suspension position of the car 10 and the counterweight 11 can be adjusted by adjusting the installation interval of the two thin hoisting machines 3a and 3b as described above, not only the guide rail but also the car 10 It is also possible to use an existing counterweight 11 or the like.
[0010]
Embodiment 2. FIG.
The thin hoisting machines 3a and 3b are respectively provided with pulleys having the same rotational center as the hoisting machine sheaves 12a and 12b, and a pulley for synchronizing the thin hoisting machines 3a and 3b is wound around the pulleys. It is hung. The belt and the pulley described above constitute the rotation transmission means, and the other effects are the same as in the first embodiment, and the same effects as in the first embodiment can be obtained.
[0011]
【The invention's effect】
As described above, the present invention provides a counterweight that has one end suspended from a car that moves up and down a hoistway along an existing car guide rail, and that moves up and down the hoistway along an existing counterweight guide rail. Two thin hoisting machines that are installed at predetermined intervals on a hoisting rope with the other end suspended and an existing machine base provided in the machine room above the hoistway, and on which the hoisting rope is wound And a rotation transmission means provided on each of the two thin hoisting machines and synchronously interlocking the hoisting machines, so that the existing car guide rail and the existing counterweight guide rail When installing and refurbishing an upper machine room type elevator device with a machine room at the top of the hoistway, install a thin hoisting machine for machine room-less elevators on the existing machine base installed in the machine room 1 It can have a traction angle of 0 degrees.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of an elevator apparatus according to Embodiment 1 of the present invention.
FIG. 2 is a plan view of a machine room of the elevator apparatus according to Embodiment 1 of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Machine room 2 Machine stand 3a, 3b Thin hoisting machine 4 Hoisting machine interlocking chain 5 Interlocking chain sprocket 6 Speed feedback device 7 Hoisting machine attachment metal 8 Hoisting rope 9 Hoistway part 10 Car 11 Counterweight 12a, 12b Winding Upper machine sheave

Claims (3)

A counterweight that raises and lowers the hoistway along the existing counterweight guide rail, and an existing machine provided in the machine room above the hoistway along with the existing elevator guideway In an upper machine room type elevator apparatus equipped with a base, a hoisting rope having one end suspended from the car and the other end suspended from the counterweight, and a predetermined interval on the machine base And two thin hoisting machines on which the hoisting ropes are wound, and a rotation transmission means provided on each of the two thin hoisting machines for synchronizing and interlocking both the hoisting machines. Elevator device characterized. A counterweight that raises and lowers the hoistway along the existing counterweight guide rail, and an existing machine provided in the machine room above the hoistway along with the existing elevator guideway In an upper machine room type elevator apparatus equipped with a base, a hoisting rope having one end suspended from the car and the other end suspended from the counterweight, and a predetermined interval on the machine base Two thin hoisting machines on which the hoisting ropes are wound, rotation transmission means provided on the two thin hoisting machines for synchronizing the hoisting machines, and the machine base. An elevator apparatus comprising a speed feedback device installed and interlocked with the rotation transmission means. 3. The elevator according to claim 1, wherein the rotation transmission means is a sprocket provided in the both hoisting machines and a chain wound around the two sprockets. 4. apparatus.

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