JP2000226173A - Hoisting machine for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress propagation of generated noise to the inside of a hoistway by covering an electric motor and a driving sheave connected and constituted by mounting a hoisting machine on a beam provided on guide rails within an elevator hoistway with a box-body shaped cover. SOLUTION: A hoisting machine 9 is mounted on a beam 5 between each one pair of guide rails 21, 31 within an elevator hoistway 1. The whole of an electric motor 91 and a driving sheave 92 connected, that is, both of an upper surface and each front, rear, left and right side surface are covered with a box-body shaped cover 93 with an opened bottom part from an upper side. In the cover 93, the bottom part is fixed to the beam 5 by a fastening tool 93a, and a through port for taking out wiring cable 7 and an opening and closing door 93c for maintenance and inspection are provided on a left side surface and a front surface, respectively. As a result, the cover 93 suppresses propagation of noise generated in the electric motor 91, noise within a car is lowered and passengers can comfortably utilize an elevator.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator hoist having a structure in which an electric motor supported by a guide rail in an elevator shaft and a drive sheave are connected.

[0002]

2. Description of the Related Art In a rope type elevator installed in a building, a machine room is generally installed on a rooftop on a hoistway.
However, in recent years, from the viewpoint of sunshine rights, landscape or space saving for buildings, and effective utilization of building volume, for example, hoisting machines are installed in elevator hoistways and elevator control panels are stopped. There is a case where it is housed in a building and does not have a machine room on the roof.

A schematic structure of a conventional rope type elevator in which a hoist is installed in a hoistway will be described with reference to FIGS.

FIG. 6A is a plan view of a rope-type elevator in which a car 2 and a counterweight (C / W) 3 are arranged in a hoistway 1.
A pair of car guide rails 21 and C / W guide rails 31 for guiding the vertical movement of / W3 are provided side by side in the vertical direction. FIG. 6B is a left side view of the elevator shown in FIG. 6A, and the drive sheave 42 connected to the electric motor 41 of the hoist 4 has the car 2 and the C / W 3. The main rope (cord) 6 which is fixed to both ends is wound. As shown in FIGS. 6 (a) and 6 (b), among the car frames constituting the car 2, as shown in FIGS. Also C
A / W guide device 32 is provided, and the car 2 and the C / W 3 are guided by the respective guide devices (23, 32) to move up and down in the hoistway 1 in the vertical direction.

Accordingly, as shown in the plan view of FIG. 7A and the front view of FIG. 7B, the upper rails of the pair of car guide rails 21 and the C / W guide rails 31 are respectively shown. A wide plate-shaped beam 5 is interposed and fixed between the beams, and a hoisting machine 4 is mounted on the beam 5, and a main rope wound around a drive sheave 42 of the hoisting machine 4. Reference numeral 6 denotes a car 2 and a C / W 3 through a through hole provided in the beam 5.
Is suspended and connected.

Although not shown, an elevator control panel is housed in a door pocket of a three-way landing on the top floor of the stop, and a wiring cable 7 between the control panel and the electric motor 41 is shown in FIG.
As shown in the figure, the wiring is routed through a plurality of relay terminals (brackets) 8 provided on the shaft wall 11.

The length of the distribution cable 7 depends on not only the size of the hoistway of the elevator but also the relay or distribution route of the distribution cable 7. Therefore, in arranging the wiring cable 7 performed prior to the installation work of the elevator, the person in charge goes to the elevator installation site one by one, and the position of the hoisting machine 4 on the beam 5, the structural dimensions, the mounting position of the relay terminal, and the like. , The distance was measured, and the length of the distribution cable was calculated.

[0008]

As described above, in a rope-type elevator in which the machine room is not provided on the roof, the motor is provided on a beam extending across the guide rail, so that the drive noise generated from the motor is not changed. Since it spread in the hoistway and propagated especially in the car, the room noise in the car was large, giving the passengers discomfort.

Accordingly, an object of the present invention is to provide an elevator hoist capable of suppressing the generated noise from propagating into a hoistway.

[0010]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems.
An elevator hoist comprising a connection between an electric motor and a drive sheave mounted on a beam provided on a guide rail in an elevator hoistway, wherein the connected electric motor and the drive sheave are box-shaped. Characterized by being configured to be covered with a cover in the shape of a letter.

As described above, the elevator hoist according to the first aspect of the present invention is configured such that the whole of the connected electric motor and the drive sheave are covered by the box-shaped cover, so that the noise generated by the electric motor is obtained. Is suppressed from propagating in the hoistway, particularly in the car, and passengers can use the elevator comfortably.

According to a second aspect of the present invention, in the elevator hoist according to the first aspect of the present invention, the box-shaped cover is constituted by a combination of a plurality of cover members.

According to the second aspect of the present invention, the box-shaped cover is formed by combining a plurality of cover members.
In addition to the effect of the invention of (1), there is an advantage that the worker can easily perform the installation and disassembly work.

According to a third aspect of the present invention, in the elevator hoist according to the first or second aspect, the box-shaped cover has at least one of a top surface and front, rear, left and right side surfaces. An open / close door is provided on the vehicle.

According to the third aspect of the present invention, the door is provided on at least one of the upper surface and the front, rear, left and right side surfaces of the box-shaped cover. In addition to the effect of the invention, the inspection work of the connection part of the wiring cable and the connection part of the electric motor and the drive sheave can be performed without removing the entire special cover, and the worker can efficiently perform the maintenance and inspection work. Can be.

According to a fourth aspect of the present invention, in the elevator hoist according to any one of the first to third aspects, one end of the box-shaped cover is fixed to the cover. It is characterized in that a brace supporting a wiring cable connected between the electric motor and the elevator control panel is attached and fixed so that the other end reaches the latest guide rail.

According to the fourth aspect of the present invention, the arm is attached and fixed to the cover so as to reach the latest guide rail. Therefore, at least in addition to the operation of the first aspect, the electric motor and the elevator are provided. The length of the wiring cable laid between the control panel and the control panel can be calculated more easily.

The length (wiring length) of the wiring cable connected between the motor and the elevator control panel greatly depends on the size of the hoistway (car) as described above.
Normally, from the viewpoint of effective use of the building itself and space saving, the space (interval) between the car and the hoistway wall in the hoistway
Is set substantially constant so as to be a necessary minimum. Therefore, the present inventor, even if the length of the wiring cable is necessary and depends on the size of the hoistway, the wiring length on the hoistway side is naturally determined by the size of the hoistway or car, We focused on the fact that the uncertainty of the wiring length was rather due to the uncertainty of the position of the motor on the car side.

In view of the above, according to the present invention, a brace supporting the distribution cable and reaching the guide rail closest to the size of the car is fixed to the cover. The length from the motor connection terminal of the wiring cable to the exit on the car side can be specified by the length of the arm corresponding to the size of the car, and the wiring length on the car side can be easily calculated.

As described above, according to the fourth aspect of the invention, in addition to the functions of the first to third aspects of the present invention, as in the prior art, until the person in charge confirms the installation situation at the site one by one. In addition, the length of the wiring cable on the car side can be calculated from the length of the arm bar, and the work efficiency can be improved.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of an elevator hoist according to the present invention will be described below with reference to FIGS. The same components as those of the conventional configuration shown in FIGS. 6 and 7 are denoted by the same reference numerals, and detailed description is omitted.

FIGS. 1 to 3 are schematic structural views for explaining an elevator hoist according to a first embodiment of the present invention. FIG. 1A is a plan view and FIG. As shown in the front views, the hoisting machine 9 is mounted on the beam 5 between each pair of guide rails 21 and 31 in the elevator hoistway 1. In the hoisting machine 9, the connected electric motor 91 and drive sheave 92 are entirely covered, that is, the upper surface and the front, rear, left, and right side surfaces are covered from above by a box-shaped cover 93 having an open bottom, and The cover 93 was configured to be fixed to the beam 5 by a stopper 93a at the bottom.

As shown in an enlarged view in FIG. 2, a through hole 9 for taking out the wiring cable 7 is provided on the left side of the cover 93.
3b, an opening / closing door 93c is provided in front of the cover 93, and by simply opening the opening / closing door 93c, the connection portion of the wiring cable 7 and the connection portion between the electric motor 92 and the driving sheave 91 are inspected. The operator can efficiently perform maintenance management.

In this embodiment, the opening and closing door 93c
Is provided on the front side on the front side.
3 is provided on the upper surface (ceiling surface) of the motor 3 and the electric motor 92 and the drive sheave 91
If necessary, check the connection between
It can be provided on any surface.

In this embodiment, one end is fixed to the cover 93 between the back surface of the cover 93 and the beam 5, and the other end is the closest to the guide rail 31 as shown in FIG.
Multiple pieces extending in the lateral direction with a length
), And a plurality (two in this case) of auxiliary arms 94a are crossed and combined with the arms 94, and the distribution cable 7 laid toward the elevator control panel is connected to the arms 94, It is configured to be supported by a string-like insulating tightening tool 94b along the line 94a.

As described above, the position of the hoisting machine 9 on the beam 5 and the distance between the hoisting machine 9 and the guide rail 31 differ depending on the size of the car. 5 and the guide rail 31, the wiring cable 7 is supported along these arms 94, 94a. Therefore, the length of the wiring cable on the car side is specified by the length of the arms 94, 94a to be incorporated, and Of the distribution cable 7 can be easily calculated.

The wiring cable 7 connected to the electric motor 91 includes a power line 7a of the electric motor 91 and a pulse generator line 7b as a signal line. As shown in FIG. A plurality of auxiliary arms 94
The wiring can be performed in such a manner that the wiring can be performed separately for each of a.

As described above, the wiring cable 7 wired between the motor 91 and the elevator control panel (not shown) is supported by the arms 94, 94a whose mounting position and length are specified on the car side. The cable length of the uncertain wiring route can be specified, and the person in charge can go to the site and measure the position of the hoist every time. Becomes

As described above, according to the elevator hoist of this embodiment, the cover 93 is provided, so that the noise generated by the electric motor 91 is prevented from spreading in the hoistway 1, especially in the cab. The passengers in the car can use the elevator comfortably.

Next, the cover of the hoist according to the first embodiment has been described as having a single box shape as a whole. , Within a confined, narrow space hoistway,
In addition, the guide rails are provided upright in the hoistway, which makes it necessary to work in a narrow space.

Accordingly, a second embodiment of the elevator hoist according to the present invention, in which the cover is divided into a plurality of parts in advance and which facilitates the installation work by the worker in the hoistway, is shown in FIGS. 4 and 5. This will be described with reference to FIG. In FIGS. 4 and 5, the structure of the arm to which the wiring cable is locked and the opening and closing door are the same as those in the first embodiment, and the arm or the opening and closing door is one of the divided cover members. Are different from each other only in that they can be
Only the main difference, the cover, will be described. 4 and 5 show the main part of an elevator hoist according to a second embodiment of the present invention. As shown in FIG. 2, the cover 93 has an upper surface and front, rear, left and right side surfaces. It consisted of a combination of a plurality of cover members 931 to 935.

As described above, the cover 93 has a combination of a plurality of cover members 931 to 935 and is assembled by screws or the like. In addition to the functions and effects of the first embodiment, the cover 93 can be installed. It is possible to efficiently carry out the work of removing the cover of the hoisting machine performed when the hoisting machine 9 is inspected or replaced, as well as the transport at the time.

[0033]

As described above, according to the first aspect of the present invention, since the cover suppresses the propagation of noise generated by the electric motor, the noise in the car is reduced and the passenger can use the elevator comfortably. be able to.

According to the second aspect of the present invention, since the box-shaped cover is formed by dividing and combining the upper surface and the front, rear, left and right side cover members, in addition to the effect of the first aspect, the handling of the cover is also provided. , And transportation becomes easy, and the assembling work or the inspection and maintenance work by the worker in the narrow hoistway becomes easy.

According to the third aspect of the present invention, since the cover is provided with an opening / closing door, in addition to the effects of the first or second aspect of the present invention, a worker can perform wiring without removing the entire cover. It is possible to inspect the connection portion of the cable, the connection portion between the electric motor and the drive sheave, and the like, and the efficiency of maintenance and inspection can be improved.

According to the fourth aspect of the present invention, since the arm is provided on the cover, the driving noise generated from the electric motor is reduced, and
Calculation of the length of the wiring cable required when arranging the wiring cable is facilitated, and the efficiency of the operation of arranging the wiring cable by the operator can be improved.

[Brief description of the drawings]

FIG. 1 (a) is a plan view showing a first embodiment of an elevator hoist according to the present invention, and FIG. 1 (b) is FIG.
It is a front view of (a).

FIG. 2 is an enlarged perspective view showing a hoist cover and a brace shown in FIG. 1;

FIG. 3 is an enlarged rear view of a main part of the elevator hoist shown in FIG. 1;

FIG. 4 is an exploded perspective view of a hoist cover in a second embodiment of the elevator hoist according to the present invention.

FIG. 5 is a perspective view of the hoisting machine cover shown in FIG.

6 (a) is a plan view showing a conventional rope elevator, and FIG. 6 (b) is a left side view of FIG. 6 (a).

7 (a) is a plan view showing a hoisting machine of the rope type elevator shown in FIG. 6, and FIG. 7 (b) is a front view of the hoisting machine shown in FIG. 7 (a).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hoistway 2 Riding car 21 Riding car guide rail 3 Counterweight (C / W) 31 Counterweight guide rail 4 Hoisting machine 41 Electric motor 42 Driving sheave 5 Beam 6 Main rope 7 Wiring cable 8 Relay terminal (bracket) 9 Hoisting Machine 91 Electric Motor 92 Drive Sheave 93 Cover 93b Opening / Closing Door 931 to 935 Cover Member 94 Arm 94a Auxiliary Arm

Claims (4)

[Claims] An elevator hoist comprising a motor and a drive sheave mounted on a beam provided on a guide rail in an elevator shaft, wherein the motor and the drive rope are connected. An elevator hoist, wherein the car is configured to be covered by a box-shaped cover. 2. An elevator hoist according to claim 1, wherein said box-shaped cover is formed by a combination of a plurality of cover members. 3. The elevator according to claim 1, wherein the box-shaped cover is provided with an opening / closing door on at least one of an upper surface and front, rear, left, and right side surfaces. Hoist. 4. The box-shaped cover supports a wiring cable connected between the electric motor and the elevator control panel with a length fixed at one end to the cover and the other end reaching a recent guide rail. The elevator hoist according to any one of claims 1 to 3, wherein a crosspiece is attached and fixed.