JP2004224540A - Passenger conveyor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a passenger conveyor which incorporates an inverter control device and does not expand the dimension of a main frame. <P>SOLUTION: The passenger conveyor is equipped with the main frame 2 extending in a slender shape, a machine room 3a formed at the end part in the main frame 2, the inverter control device 16, a motor 4 and a reduction mechanism 6 disposed in the machine room 3a. The mounting columns 19a, 19b supporting the inverter control device 16 are vertically provided in the machine room 3a. The inverter control device 16 is liftable along the mounting columns 19a, 19b. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a passenger conveyor having a main frame, and more particularly to a passenger conveyor in which a machine room in the main frame is relatively narrow.
[0002]
[Prior art]
2. Description of the Related Art In general, a passenger conveyor having a main frame having a machine room therein is known. The operating speed of the steps of the passenger conveyor was constant, 30 m / min. However, the Building Standards Law has been revised, and the upper limit of the rated speed of steps has become possible up to 45 m / min. Due to this revision, in places where a large number of users need to be transported in a short time, such as in a station building, a passenger conveyor having a high operating speed with a rated step speed of 45 m / min has been demanded.
[0003]
In addition, in an automatic driving type passenger conveyor, the passenger conveyor is operated at a very low speed rather than stopped at the time of standby, indicating a driving direction of the passenger conveyor to the user, so that the user can easily use the conveyor. Passenger conveyors have also been desired in recent years. In order to satisfy both functions, a method is known in which the frequency is controlled using an inverter control device to control the rotation speed of the electric motor.
[0004]
However, in order to secure an output at a maximum speed of 45 m / min, it is necessary to increase the output of the inverter control device, and the external dimensions of the inverter control device will inevitably increase. In this case, it is necessary to enlarge the machine room in the main frame to accommodate the inverter control device, but the only way to enlarge the machine room in the passenger conveyor system is to extend the main frame. The area becomes large.
[0005]
On the other hand, according to the current situation in the architectural world, it is desired that a passenger conveyor be as small as possible.
[0006]
[Problems to be solved by the invention]
As described above, a recent passenger conveyor having a large inverter control device is desired. On the other hand, as a passenger conveyor, a reduction in the occupied area is desired.
[0007]
The present invention has been made in view of such points, and requires an inverter control device installed in a machine room in the main frame without extending the main frame, and a space required for maintenance work such as periodic inspection. It is an object of the present invention to provide a passenger conveyor capable of securing a passenger.
[0008]
[Means for Solving the Problems]
The present invention provides an elongated main frame, a machine room formed at an end in the main frame, an inverter control device, an electric motor, and a speed reduction mechanism arranged in the machine room, and a vertical direction arranged in the machine room. And a mounting portion for supporting the inverter control device, wherein the inverter control device can move up and down along the mounting portion.
[0009]
The present invention is a passenger conveyor characterized in that a rail guide is provided on a mounting portion, a rail engaging with the rail guide is mounted on an inverter control device, and the inverter control device can be moved up and down along the mounting portion.
[0010]
The present invention is a passenger conveyor characterized in that a jack installation base is detachably provided near an inverter control device in a main frame.
[0011]
The present invention is a passenger conveyor characterized in that a jack for raising and lowering an inverter control device is provided on a jack installation base.
[0012]
According to the present invention, the speed reduction mechanism has an elongated shape, and the speed reduction mechanism is arranged along the longitudinal direction of the main frame, and the inverter control device and the electric motor are directed to the outside of the main frame beside the speed reduction mechanism. It is a passenger conveyor characterized by being arranged sequentially.
[0013]
The present invention is a passenger conveyor characterized in that an electric motor and a speed reduction mechanism are lifted and installed from the bottom of a machine room, and a wiring system is arranged below the motor and the speed reduction mechanism.
[0014]
The present invention is a passenger conveyor characterized in that a receiver for supporting the inverter control device from below is mounted on the mounting portion.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 6 are views showing an embodiment of a passenger conveyor according to the present invention.
[0016]
The passenger conveyor 1 has an elongated main frame 2 between an upper floor 1a and a lower floor 1b, a machine room 3a formed at an end of the upper frame 1a in the main frame 2, and a lower frame in the main frame 2. And a machine room 3b formed at the end of the floor 1b.
[0017]
The main frame 2 is connected to the upper floor 1a by a support fitting 2a, and further connected to the lower floor 1b by a support fitting 2b.
[0018]
In the machine room 3a on the upper floor 1a side of the main frame 2, the electric motor 4, a transmission mechanism 5 connected to the electric motor 4, a reduction mechanism 6 connected to the transmission mechanism 5, and a sprocket 7 extending from the reduction mechanism 6 Is provided. The speed reduction mechanism 6 has an elongated shape, and is arranged in the machine room 3 a along the longitudinal direction of the main frame 2. An electric motor 4 is arranged on the side of the speed reduction mechanism 6, and an inverter control device 16 described later is provided inside the electric motor 4.
[0019]
Thus, in the machine room 3 a of the main frame 2, the speed reduction mechanism 6 extends in the longitudinal direction of the main frame 2, and the inverter control device 16 and the electric motor 4 are located outside the main frame 2 on the side of the speed reduction mechanism 6. It is arranged sequentially toward.
[0020]
A power drive chain 7 is connected to the sprocket 7a of the speed reduction mechanism 6, and the drive chain 7 drives a drive sprocket 8 disposed in the main frame 2. Since the upper surface of the speed reduction mechanism 6 in the machine room 3a is covered with a horizontal and rigid outer box, it is possible for an operator to work with a stable posture by placing his feet on the upper surface of the speed reduction mechanism 6. .
[0021]
Further, a driven sprocket 9 is provided in the lower floor 1b side machine room 3b of the other end of the main frame 2 in the longitudinal direction, and an endless step chain 10 is wound around the driving sprocket 8 and the driven sprocket 9. I have. Further, a large number of steps 11 are connected to the step chain 10 at equal intervals.
[0022]
A front wheel 11a and a rear wheel 11b are attached to the front and rear of each step 11, and the step 11 is provided with a forward guide rail, a return guide rail, and a rear guide rail provided in the main frame 2 via the front wheel 11a and the rear wheel 11b. It is guided by a guide rail (not shown) composed of a reverse guide rail. In this manner, the large number of steps 11 circulate and travel in conjunction with the movement of the step chain 10.
[0023]
In the vicinity of the position where the steps 11 are reversed, the entrances and exits 30a and 30b of the passengers are provided, and entrance and exit boards 12a and 12b are provided on the main frame 2 of each entrance and exit 30a and 30b. A pair of balustrades 13 are erected from both upper sides of the main frame 2, and a handrail belt 14 that runs in synchronization with the steps 11 is provided above each balustrade 13. The drive of the handrail belt 14 and the steps 11 is controlled by a control device 15 installed in the machine room 3a on the upper floor 1a side and an inverter control device 16 for controlling the operating frequency of the electric motor 4. Among them, the inverter control device 16 is provided between the entrance / exit 30a and the electric motor 4, and the control device 15 is provided outside the electric motor 4.
[0024]
Next, a mounting structure of the inverter control device 16 will be described with reference to FIGS. Here, FIG. 3 is a sectional view of the inside of the machine room 3a on the upper floor 1a side. The main frame 2 is provided with a main frame upper horizontal beam 17 and a main frame lower horizontal beam 18 at a position separating the step reversing section (entrance 30a) and the upper floor 1a side machine room 3a. The inverter control device mounting columns (inverter control device mounting portions) 19a and 19b are rigidly mounted between the lower cross beams 18 by bolts or welding. The inverter control device 16 is held on the inverter control device mounting columns 19a and 19b by bolts or the like.
[0025]
Under the inverter control device mounting columns 19a and 19b, a receiver 20 is provided at a position where the inverter control device 16 is held at a height that can be accommodated in the main frame 2, and the inverter controller 16 is supported by the receiver 20. ing.
[0026]
In addition, rail guides 21a and 21b are provided on the inverter control device mounting columns 19a and 19b over the entire length of the inverter mounting columns 19a and 19b in the longitudinal direction. The cross sections of the rail guides 21a and 21b are U-shaped, and a folded portion is formed on an open surface. A back plate 16a is fixed to the back surface of the inverter control device 16. The back plate 16a has a larger size than the inverter control device 16, and the back plate 16a has rails 22a, 22b protruding downward from the inverter control device 16. Is installed. The rails 22a and 22b are inserted into rail guides 21a and 21b on the side of the inverter control device mounting columns 19a and 19b.
[0027]
The rails 22a and 22b are configured to have dimensions slightly smaller than the rail guides 21a and 21b in both the width direction and the thickness direction, and the difference in the dimensions allows free insertion and projection in the longitudinal direction. Also, the cross section of the rail guides 21a and 21b has a U-shape in the front-rear direction as described above, and a folded portion is also formed on the open surface, so that the rail guides 21a and 21b wrap the rails 22a and 22b. It is composed of shapes. Thus, the rail guides 21a and 21b can guide the rails 22a and 22b even on an open surface, and can restrict the movement of the rails 22a and 22b in the front-rear direction.
[0028]
The rails 22a and 22b on the inverter control device 16 side and the rail guides 21a and 21b on the inverter control device mounting columns 19a and 19b side are preferably made of members having little friction because they slide with each other. It is necessary to regulate the movement of the rails 22a and 22b by providing a slight difference, and to ensure low friction. Familiar items that can satisfy such conditions include a railing belt and railing rails of a passenger conveyor. That is, the above conditions can be satisfied by applying the handrail belt as the rail guides 21a and 21b and applying the handrail rail as the rails 22a and 22b. In addition, since the products normally used in passenger conveyors can be applied, no special products are required, which can contribute to cost reduction.
[0029]
Next, a wiring route between the inverter control device 16, the electric motor 4, and the control device 15 will be described with reference to FIG. Usually, the electric wire used for the electric motor 4 varies depending on the power supply voltage, electric motor capacity, and the like. However, the electric wire size applied to the passenger conveyor is 8 mm ² or more, and depending on the capacity, 38 mm ² or more may be applied. When the size of the electric wire increases, wiring cannot be performed with the dimensions of the main frame 2 of a normal passenger conveyor, and it is necessary to increase the dimensions of the main frame 2 in order to secure a wiring space. On the other hand, the present invention is configured to be able to cope with a case where an electric wire of 38 mm ² or more is applied. That is, in FIG. 3, the driving device 4a including the electric motor 4, the transmission mechanism 5, and the reduction mechanism 6 is fixed on a machine base 23 installed in the machine room 3a. The machine base 23 is formed by assembling grooved steel or the like in a girder shape. The machine base 23 is attached to the bottom of the machine room 3a via a main frame bottom beam 24 disposed in the longitudinal direction at the bottom of the machine room 3a. Fixed.
[0030]
With such a configuration, the groove steel forming the machine base 23 and the main frame bottom beam 24 are orthogonal to each other, and the drive unit 4a can be lifted from the bottom of the machine room 3a without interrupting the wiring path in the height direction. , It can be fixed at a position higher than the position where it is normally installed. By setting the driving device 4a at a position higher than usual, a wiring path can be secured below the driving device 4a. Therefore, the electric wires 25a and 25b can be wired as shown in FIG. 3, and the wiring to the electric motor 4 can be performed without increasing the size of the main frame 2.
[0031]
Further, as described above, since the inverter control device 16 is provided between the step reverse portion (the entrance / exit 30a) of the upper floor 1a and the electric motor 4, the inverter control device can be provided without extending the dimension of the main frame 2 in the longitudinal direction. 16 can be installed in the main frame 2. However, referring to FIG. 2, it is difficult for maintenance personnel to enter the main frame 2 during maintenance such as periodic inspection of the passenger conveyor, and to perform maintenance of each device. In such a case, the inverter control device 16 is raised using a jack at the time of maintenance, and the inverter control device 16 is fixed at the raised position to secure a space in the main frame 2 where maintenance personnel can perform maintenance.
[0032]
Such a maintenance and inspection method by maintenance personnel will be further described with reference to FIGS.
[0033]
FIG. 4 is an enlarged plan view of the machine room 3a on the upper floor 1a during maintenance and inspection, and FIG. 5 is a cross-sectional view of the machine room 3a on the upper floor 1a during maintenance and inspection. 4 and 5, a mounting portion board 12z is provided at the boarding opening 30a of the main frame 2. The mounting portion board 12z is installed at the time of maintenance and inspection, and at the same time, a jack installation base 26 is installed between the main frame upper horizontal beams 17.
[0034]
In this case, the jack installation base 26 is installed so as to be hooked on the mounting portion board 12z. Note that the jack mounting base 26 is provided with a slip prevention plate 27 that engages with the main frame upper cross beam 17 so that even if the jack mounting base 26 is displaced after being hooked, the jack mounting base 26 does not come off from the mounting portion board 12z. Have been. Also, the jack installation base 26 is subjected to a bending process so as not to interfere with the jack installation base 26 even when the steps 11 move.
[0035]
After the jack installation base 26 is installed between the mounting part boarding / leaving plate 12z and the main frame upper horizontal beam 17, a jack-up support 28 is installed and fixed on the upper surface of the inverter control device 16. The jack-up support 28 is made of a steel material such as a groove steel and an equilateral angle steel, and has sufficient strength to hold the inverter control device 16. Also, the members constituting the jack-up support 28 are connected by screws, and can be disassembled and compactly carried for each member.
[0036]
Next, a jack 29 is installed between the jack installation stand 26 and the jack-up support 28. In this state, the bolts fixed to the inverter control device mounting columns 19a, 19b are removed, and the inverter control device 16 can be moved relative to the inverter control device mounting columns 19a, 19b. Thereafter, by operating the jack 29, the rising portion 29a of the jack 29 rises, and the rising portion 29a pushes up the jack-up support 28 fixed to the inverter control device 16. At this time, the jack-up support 28 raises the inverter control device 16. At this time, the rails 22a and 22b attached to the back plate 16a of the inverter control device 16 and the rail guides 21a and 21b provided on the inverter control device mounting columns 19a and 19b slide with each other, and the inverter control device 16 Rises directly above. At this time, by reducing the friction between the rails 22a, 22b and the rail guides 21a, 21b, the jack 29 can bear only the load corresponding to the weight of the inverter control device 16, and the inverter control device 16 can be easily lifted. Can be performed.
[0037]
FIG. 6 is a diagram in which the inverter control device 16 is raised to a position where a maintenance person can perform a periodic inspection at the time of the above-described maintenance inspection. In the position shown in FIG. 6, the inverter control device 16 is fixed to the inverter control device mounting columns 19a and 19b with bolts. When lowering the inverter control device 16, the jack 29 is operated and lowered. At this time, since the lowest position of the inverter control device 16 is defined by the receiving money 20, the inverter control device 16 can always be lowered to the fixed position.
[0038]
【The invention's effect】
As described above, according to the present invention, the inverter control device can be housed in the main frame without extending the main frame dimensions. Further, at the time of maintenance and inspection, the maintenance and inspection work can be easily performed by raising the inverter control device.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram showing an embodiment of a passenger conveyor according to the present invention.
FIG. 2 is an enlarged plan view of a machine room on the upper floor side of the passenger conveyor shown in FIG.
FIG. 3 is a sectional view of the machine room on the upper floor side shown in FIG. 2;
FIG. 4 is an enlarged plan view of a machine room on the upper floor side of the passenger conveyor shown in FIG. 1 during maintenance.
5 is a cross-sectional view of the upper-floor machine room during maintenance and inspection of the passenger conveyor shown in FIG.
FIG. 6 is a cross-sectional view of the machine room on the upper floor when the inverter control device is raised during maintenance and inspection of the passenger conveyor shown in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Passenger conveyor 1a Upper floor 1b Lower floor 2 Main frame 2a, 2b Support fitting 3a Machine room 3b Machine room 4 Electric motor 4a Drive unit 5 Transmission coupling 6 Reduction mechanism 7 Drive chain 8 Drive sprocket 9 Follower sprocket 10 Step chain 11 Step 12a, 12b Boarding board 12z Mounting section boarding board 13 Balustrade 14 Railing belt 15 Control device 16 Inverter control device 16a Backboard 17 Main frame upper cross beam 18 Main frame lower cross beam 19a, 19b Inverter control device mounting column 20 Receptacles 21a, 21b Rail guide 22a , 22b Rail 24 Main frame bottom beam 25a, 25b Electric wire 26 Jack installation stand 28 Jack up support 29 Jack

Claims (7)

An elongated main frame,
A machine room formed at an end in the main frame,
An inverter control device, an electric motor, and a reduction mechanism arranged in the machine room;
A mounting portion that is disposed vertically in the machine room and supports the inverter control device.
A passenger conveyor, wherein the inverter control device is movable up and down along the mounting portion. 2. The rail according to claim 1, wherein a rail guide is provided on the mounting portion, and a rail engaging with the rail guide is mounted on the inverter control device, so that the inverter control device can be moved up and down along the mounting portion. Passenger conveyor. The passenger conveyor according to claim 1, wherein a jack installation base is detachably provided near the inverter control device in the main frame. 4. The passenger conveyor according to claim 3, wherein a jack for raising and lowering the inverter control device is provided on the jack installation base. The speed reduction mechanism has an elongated shape, and the speed reduction mechanism is arranged along a longitudinal direction of the main frame, and the inverter control device and the electric motor are disposed laterally of the speed reduction mechanism toward the outside of the main frame. The passenger conveyor according to claim 1, wherein the passenger conveyors are sequentially arranged. Lifting and installing the motor and the reduction mechanism from the bottom of the machine room,
The passenger conveyor according to claim 1, wherein a wiring system is arranged below the electric motor and the speed reduction mechanism. The passenger conveyor according to claim 1, wherein a receiver for supporting the inverter control device from below is mounted on the mounting portion.

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