KR100980157B1 - Passenger conveyor - Google Patents

Abstract

In the passenger conveyor, the scaffold driving device is controlled by the driving control device. The operation control apparatus has an intermediate control part provided in the intermediate part of the longitudinal direction of the main frame. The intermediate controller includes a heat generator that generates heat during operation, such as an inverter, a converter, a reactor, and a regenerative resistor.

Passenger conveyor, scaffolding drive, main frame, middle section, middle control section

Description

Passenger Conveyor {PASSENGER CONVEYOR}

The present invention relates to a passenger conveyor for controlling the driving speed of the scaffold by, for example, a driving control device including a heating device such as an inverter.

In the conventional escalator, the inverter box and relay box for inverter control of a drive are accommodated in the upper machine room (for example, refer patent document 1).

Patent Document 1: Japanese Patent Application Laid-Open No. 2002-362872

Problems to be Solved by the Invention

In the above conventional escalator, since the inverter box and the relay box are accommodated in the upper machine room, the maintenance space in the upper machine room becomes narrow. In addition, when heat generators such as inverters are installed in the upper machine room, it is necessary to provide heat dissipation means or cooling means in the upper machine room, but it is difficult to secure the installation space of the heat dissipation means or the cooling means because of limitations caused by buildings. .

This invention is made | formed in order to solve the above subjects, and an object of this invention is to obtain the passenger conveyor which can arrange | position heat generating apparatus efficiently and can secure the maintenance space in a machine room.

Means to solve the problem

The passenger conveyor according to the present invention is provided on the main frame, the main frame, and is connected in an endless manner, and controls a plurality of scaffolds that are circulated and moved, a scaffold drive device for driving the scaffold, and a scaffold drive device. An operation control apparatus is provided, and the operation control apparatus includes an intermediate control unit installed in an intermediate portion in the longitudinal direction of the main frame, and the intermediate control unit includes a heat generator that generates heat during operation.

BRIEF DESCRIPTION OF THE DRAWINGS It is a side view which shows the escalator by Embodiment 1 of this invention.

FIG. 2 is a cross-sectional view taken along the line II-II of FIG. 1.

It is a side view which shows the escalator by Embodiment 2 of this invention.

It is a side view which shows the escalator by Embodiment 3 of this invention.

It is a side view which shows the escalator by Embodiment 4 of this invention.

FIG. 6 is a cross-sectional view taken along line VI-VI of FIG. 5.

FIG. 7 is a cross-sectional view illustrating a first example of a case of the intermediate controller illustrated in FIGS. 1 to 6.

8 is a cross-sectional view illustrating a second example of a case of the intermediate controller illustrated in FIGS. 1 to 6.

9 is a cross-sectional view illustrating a third example of a case of the intermediate control unit illustrated in FIGS. 1 to 6.

10 is a cross-sectional view illustrating a fourth example of a case of the intermediate controller illustrated in FIGS. 1 to 6.

EMBODIMENT OF THE INVENTION Hereinafter, preferred embodiment of this invention is described with reference to drawings.

Embodiment 1.

BRIEF DESCRIPTION OF THE DRAWINGS The side view which shows the escalator which concerns on Embodiment 1 of this invention, and FIG. 2 is sectional drawing along the II-II line of FIG. In the figure, the main frame (truss) 1 spans between the top and bottom floors. Moreover, the main frame 1 has an upper horizontal part, an intermediate inclination part, and a lower horizontal part. The main frame 1 is provided with a plurality of scaffolds 2 connected in an endless phase. The footrest 2 is circulated in the main frame 1. Each scaffold 2 is provided with a pair of drive rollers 3a and 3b and a pair of following rollers 4a and 4b.

In the main frame 1, a pair of drive rails 5a and 5b for guiding the drive rollers 3a and 3b and a pair of following rails 6a and 6b for guiding the following rollers 4a and 4b are provided. This is provided.

A machine room 7 is provided at the upper end of the main frame 1 (below the bottom near the upper hatch). In the machine room 7, the scaffold drive apparatus 8 which drives the scaffold 2, and the main control part (main control panel) 9 are accommodated. The scaffold drive apparatus 8 has the drive motor 8a which is a drive source.

The fixing bracket 10 is fixed to the middle part of the longitudinal direction of the main frame 1, ie, the middle part of the intermediate inclination part. The fixing bracket 10 is parallel and horizontal in the width direction of the footrest 2. An intermediate control unit (intermediate control panel) 11 is fixed to the fixing bracket 10. The intermediate | middle control part 11 is the same direction as the inclination direction of the intermediate | middle inclination part of the main frame 1, between the footrest 2 of a road side, and the foothold 2 of a home side. It is inclined. Specifically, the intermediate controller 11 is inclined in parallel with the intermediate inclined portion of the main frame 1. The intermediate controller 11 includes a device for controlling the operation speed of the scaffold 2, specifically, an inverter, a converter, a reactor, and a regenerative resistor.

Since the inverter controls the drive motor 8a, which is an AC motor, to efficiently generate the required torque, an AC current of an arbitrary voltage and frequency is generated from the DC voltage generated in the converter. In addition, since the inverter generates an alternating current by switching the DC voltage, it generates heat for switching losses.

As the converter, a diode converter or a transistor converter is used. Diode converters and transistor converters generate a direct voltage from an alternating current of a commercial power supply (constant voltage, frequency: 50 Hz or 60 Hz). In addition, the transistor converter has a function of returning regenerative energy to the power supply. In addition, the converter generates a DC voltage by switching an alternating current, thereby generating heat for switching losses.

The reactor functions as a filter that prevents the leakage of harmonics and surge voltages so that harmonics and surge voltages generated by the operation of the inverter and the converter do not adversely affect the commercial power supply or the drive motor 8a. do. The reactor generates heat because the energy of the high frequency component absorbed as a filter is converted into heat.

The regenerative resistor turns from the drive motor 8a when the drive motor 8a is driven by an external force at a speed higher than the speed to be driven, such as during the descent operation or stop of the escalator having a high ride rate. Consume the energy that comes (regenerates) into heat.

In this way, the inverter, the converter, the reactor, and the regenerative resistor disposed in the intermediate controller 11 are all heat generators that generate heat during operation. For this reason, at least one (for example, inverter) of these heat generating apparatuses is provided with the heat pipe for cooling.

The driving control device for controlling the scaffold driving device 8 has a main control unit 9 and an intermediate control unit 11. The intermediate control unit 11 is connected to the main control unit 9 via a cable 12. The main control unit 9 is connected to the drive motor 8a via a cable 20. That is, the control signal from the intermediate control part 11 is input to the drive motor 8a via the main control part 9. However, it is also possible to cable-connect the intermediate | middle control part 11 and the drive motor 8a, and to directly input the control signal from the intermediate | middle control part 11 to the drive motor 8a.

The main control unit 9 is provided with an interface unit connected to the intermediate control unit 11 so that communication is possible. The interface unit is provided with an operation unit for inputting a change of parameters of the inverter and the converter, and a display unit for confirming the inverter and converter states in the machine room 7. The main control unit 9 has a microcomputer.

In such an escalator, since the intermediate | middle control part 11 was provided in the middle part of the longitudinal direction of the main frame 1, and the inverter, the converter, the reactor, the regenerative resistor, etc. were arrange | positioned at the intermediate | middle control part 11, a heat generating apparatus can be efficiently In addition, the layout in the machine room 7 can be afforded, and the maintenance space in the machine room 7 can be sufficiently secured.

In addition, heat generated from heat generators such as an inverter, a converter, a reactor, and a regenerative resistor can be efficiently dissipated from between the scaffolding 2 located above the intermediate controller 11. Moreover, since the air around the intermediate | middle control part 11 is stirred by the movement of the scaffold 2, the heat dissipation efficiency of a heat generating apparatus can be improved. Moreover, the temperature rise in the machine room 7 is also suppressed.

In addition, since the intermediate control part 11 is inclinedly arranged, the heat pipe provided in the heat generating device is also inclinedly arranged, and the surface area of the liquid (for example, distilled water) in the heat pipe is enlarged compared with the case where it is arrange | positioned vertically. . Thereby, heat resistance falls and cooling efficiency improves.

Moreover, since the intermediate | middle control part 11 is arrange | positioned between the footrest 2 on the return side, and the footrest 2 on the return side, the intermediate | middle control part 11 is exposed only by removing the footrest 2 on the return side. Excellent conservative In addition, the intermediate controller 11 may be disposed without changing the depth of the main frame 1.

Moreover, since the interface part was provided in the main control part 9 in the machine room 7, the state control and setting change of the apparatus of the intermediate | middle control part 11 can be performed, without removing the scaffold 2. FIG.

Embodiment 2:

3 is a side view showing an escalator according to Embodiment 2 of the present invention. In this example, the first and second scaffold drive devices 13a and 13b for driving the scaffold 2 are disposed in the intermediate inclined portion. The footrest drive devices 13a and 13b are arrange | positioned between the footrest 2 on the return side, and the footrest 2 on the return side.

The intermediate control part 11 is arrange | positioned between the scaffold drive apparatus 13a, 13b. The intermediate control unit 11 is connected to the main control unit 9 via the cable 12, connected to the first scaffold drive device 13a via the cable 14a, and connected to the second control unit via the cable 14b. It is connected to the scaffold drive device 13b. In other words, the intermediate controller 11 is directly connected to the scaffold driving devices 13a and 13b without passing through the main controller 9. In addition, the scaffold drive devices 13a and 13b are controlled by a common intermediate controller 11. The other configuration is the same as that of the first embodiment.

By such a structure, a heat generating apparatus can be efficiently arrange | positioned and sufficient maintenance space in the machine room 7 can be ensured.

Embodiment 3.

4 is a side view which shows the escalator by Embodiment 3 of this invention. In the figure, the intermediate inclination portion includes a first intermediate control unit 15a for controlling the first scaffold driving device 13a and a second intermediate control unit 15b for controlling the second scaffold driving device 13b. Is arranged. The first intermediate control unit 15a is connected to the main control unit 9 via the cable 12a, and is connected to the first scaffold drive device 13a via the cable 14a. The second intermediate control unit 15b is connected to the main control unit 9 via the cable 12b, and to the second scaffold drive device 13b via the cable 14b.

In this manner, the same number of intermediate controllers 15a and 15b as the scaffold driving devices 13a and 13b may be used, and the heat generating device can be efficiently arranged to ensure sufficient repair space in the machine room 7.

Embodiment 4.

Next, FIG. 5 is a side view which shows the escalator by Embodiment 4 of this invention, and FIG. 6 is sectional drawing along the VI-VI line of FIG. In the figure, the fixing bracket 10 and the intermediate | middle control part 11 are arrange | positioned under the footrest 2 on the return side. For this reason, the depth dimension of the main frame 1 is larger than the first embodiment. The other configuration is the same as that of the first embodiment.

In such an escalator, since the intermediate | middle control part 11 is arrange | positioned under the footrest 2 at the return side, the influence of dust, rain, etc. can be made further smaller. Moreover, even when another apparatus is arrange | positioned between the footrest 2 on the return side, and the footrest 2 on the return side, the intermediate | middle control part 11 can be arrange | positioned at an intermediate inclination part.

In addition, with respect to the escalator as shown in Embodiment 2, 3, you may arrange | position an intermediate | middle control part below the return side footrest.

In addition, the intermediate control part may be divided into a plurality and arranged, for example, the inverter, the converter, the reactor, and the regenerative resistor may be configured in different half, and may be arranged separately. In this case, some of the devices may be arranged between the footrest on the return side and the footrest on the return side, and the rest of the apparatus may be disposed under the footrest on the return side.

In addition, the heating device disposed in the intermediate control unit is not limited to an inverter, a converter, a reactor, and a regenerative resistor.

In addition, only a part of the inverter, the converter, the reactor, and the regenerative resistor may be disposed in the intermediate controller. In this case, it is preferable to arrange the inverter at least in the intermediate control section in view of the amount of heat generated and the installation space.

Moreover, it is also possible to arrange | position the apparatus which does not involve heat generation especially in an intermediate control part with a heat generating apparatus.

In the above example, the escalator has been described, but the present invention can also be applied to a moving walkway.

Here, the intermediate control parts 11, 15a, and 15b as shown in Embodiments 1-4 have cases 21-24 as shown, for example in FIGS. 7-10. That is, heat generators, such as an inverter, are accommodated in the cases 21-24.

The case 21 shown in FIG. 7 has an inlet port 21a and an exhaust port 21b. The intake port 21a is provided in the lower end surface of the case 21, and is open obliquely downward. The exhaust port 21b is provided at the upper end of the bottom surface of the case 21 and is opened downward. In addition, when the case 21 is attached to the main frame 1, the inlet port 21a is disposed at a position lower than the exhaust port 21b.

The case 22 shown in FIG. 8 has an inlet port 22a and an exhaust port 22b. The intake port 22a is provided in the lower end part of the bottom face of the case 22, and is opened obliquely downward. The exhaust port 22b is provided at the upper end of the bottom surface of the case 22 and is opened obliquely downward. In addition, when the case 22 is attached to the main frame 1, the inlet port 22a is disposed at a position lower than the exhaust port 22b.

The case 23 shown in FIG. 9 has an inlet port 23a and an exhaust port 23b. The intake port 23a is provided in the lower end surface of the case 23, and is open obliquely downward. The exhaust port 23b is provided in the upper end surface of the case 23, and is open obliquely upward. In addition, when the case 23 is attached to the main frame 1, the inlet port 23a is disposed at a position lower than the exhaust port 23b. Further, above the exhaust port 23b, a shade 23c is provided to prevent intrusion of foreign matter (water or dust, etc.) into the exhaust port 23b.

The case 24 shown in FIG. 10 has an inlet port 24a and an exhaust port 24b. The inlet port 24a is provided at the lower end of the bottom surface of the case 24 and is opened obliquely downward. The exhaust port 24b is provided in the upper end surface of the case 24 and is opened obliquely upward. In addition, when the case 24 is attached to the main frame 1, the inlet port 24a is disposed at a position lower than the exhaust port 24b. Further, above the exhaust port 24b, a shade 24c is provided to prevent intrusion of foreign matter (water or dust, etc.) into the exhaust port 24b.

In such cases 21 to 24, since the inlet ports 21a to 24a are provided at positions lower than the exhaust ports 21b to 24b, the air heated in the cases 21 to 24 is quickly exhausted to the exhaust ports 21b to 24b. ), The new air is quickly taken in from the air inlets 21a to 24a, and the heat generator can be cooled efficiently.

Moreover, since the shade parts 23c and 24c are provided in the cases 23 and 24, the water and the dust which fell from the clearance gap between the footrests 2 can be prevented by the simple structure. .

Moreover, the shading part may be provided on the inlet port or on both the inlet port and the exhaust port.

Moreover, you may provide a plurality of inlet and exhaust ports, respectively.

The case may be provided with a fan for forced cooling, a fin for heat radiation, or the like.

Claims (8)

Main frame (1), A plurality of scaffolds 2 provided on the main frame 1 and connected endlessly and circulated; Scaffold driving devices (8, 13a, 13b) for driving the scaffold; and A driving control device for controlling the scaffold driving devices 8, 13a, 13b, The driving control apparatus has intermediate control units 11, 15a, 15b which are disposed in an intermediate portion in the longitudinal direction of the main frame 1 and oppose the footrest 2 in the main frame 1, The intermediate control unit (11, 15a, 15b) is a passenger conveyor that includes a heat generator that generates heat during operation. The method according to claim 1, Passenger conveyor, characterized in that at least any one of an inverter, a converter, a reactor and a regenerative resistor is included in the heating device included in the intermediate control unit (11, 15a, 15b). The method according to claim 1, A machine room 7 is provided at one end in the longitudinal direction of the main frame 1, The operation control apparatus further comprises an interface unit provided in the machine room (7) and connected to the intermediate control unit (11, 15a, 15b) so as to be communicable. The method according to claim 1, The main frame 1 has an intermediate slope, Said intermediate | middle control part (11,15a, 15b) is arrange | positioned inclined in the same direction as the inclination direction of the said intermediate inclination part, The passenger conveyor characterized by the above-mentioned. The method according to claim 1, The intermediate control part (11, 15a, 15b) is arrange | positioned between the said footrest (2) on a back road side, and the said footrest (2) on a return road side, The passenger conveyor characterized by the above-mentioned. The method according to claim 1, The intermediate control part (11, 15a, 15b) is arrange | positioned under the footrest (2) of a return side, The passenger conveyor characterized by the above-mentioned. The method according to claim 1, The intermediate controllers 11, 15a, 15b have cases 21-24 for accommodating the heat generators, The inlets 21a, 22a, 23a, 24a and the exhaust ports 21b, 22b, 23b, 24b are provided in the cases 21-24, The inlet port (21a, 22a, 23a, 24a) is provided at a position lower than the exhaust port (21b, 22b, 23b, 24b). The method according to claim 1, The intermediate controller 11 has a case 21-24 for accommodating the heat generator, The inlets 21a, 22a, 23a, 24a and the exhaust ports 21b, 22b, 23b, 24b are provided in the cases 21-24, A passenger conveyor is provided in the upper portion of at least one of the inlet port (21a, 22a, 23a, 24a) and the exhaust port (21b, 22b, 23b, 24b) to prevent foreign matter from entering.

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