JP2016060547A - Escalator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an escalator that facilitates maintenance of operation heat generating equipment generating heat during an operation.SOLUTION: An escalator of one example includes: endless footsteps which are provided in a section between upper and lower entrances, including an intermediate inclined part; a main control part that includes a footstep driving part for driving the footsteps; a frame body that surrounds the footsteps; and an intermediate control part which is provided within the frame body and on the outside lateral surface of the intermediate inclined part of the footsteps, which is connected to the main control part, and in which operation heat generating equipment generating heat during an operation is built.SELECTED DRAWING: Figure 1

Description

  Embodiments described herein relate generally to an escalator.

  An escalator is a device that carries passengers, and normally drives an endless belt to which steps are fixed by a driving device including an inverter device.

  The escalator drive device includes a device that generates heat, such as the inverter device. In order to prevent noise, heat dissipation, and influence on other equipment, a device that generates heat during such operation may be installed away from a machine room containing a drive mechanism or the like.

  For example, a device that generates heat during operation (referred to as an operation heat generator) is installed between the escalator forward step and the return step, or a device that is distributed in the longitudinal direction of the escalator. It has been. However, these operating heat generating devices are often difficult to maintain.

Japanese Patent No. 2507670

  The present invention provides an escalator that facilitates maintenance of an operation heat generating device that generates heat during operation.

  An escalator according to an embodiment includes an endless step provided between an upper elevator opening and a lower elevator opening including an intermediate inclined portion, a main control unit including a step driving unit that drives the step, and a frame surrounding the step An intermediate control unit, which is provided inside the frame body, is provided on the outer side surface of the intermediate inclined portion of the step, is connected to the main control unit, and incorporates an operation heating device that generates heat during driving operation; Is provided.

It is a side view which shows the structure of the escalator of one Embodiment. FIG. 2 is a partial cross-sectional view taken along a line AA in FIG. 1. It is a figure which shows the example of the operation | movement heat generating apparatus in the intermediate | middle control part of one Embodiment. It is a figure which shows the example of the operation | movement heat generating apparatus in the intermediate | middle control part of other embodiment.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side view showing the structure of this embodiment.

  FIG. 1 is a side view of an escalator. The escalator 10 includes a step 11, an upper machine room 12, and a lower machine room 13. The steps 11 are circulated and moved between an upper machine room 12 and a lower machine room 13 which are installed inclined, for example, between the upper floor and the lower floor of the building. The steps 11 are connected without gaps, and convey passengers who have boarded the steps 11 to the upper floor or the lower floor.

  A number of steps 11 are connected by an endless chain 14 and are arranged in a frame (truss) 15 installed under the floor of the building. The frame 15 is spanned between the upper and lower floors. The steps 11 are circulated within the frame body 15. The frame 15 has an upper horizontal portion, an intermediate inclined portion, and a lower horizontal portion. Inside the frame 15, sprockets 12 a and 13 a are disposed in the upper machine chamber 12 and the lower machine chamber 13, respectively.

  A chain 14 is wound between the sprocket 12 a of the upper machine chamber 12 and the sprocket 13 a of the lower machine chamber 13. A driving device 12b having a motor, a speed reducer, or the like is connected to one of the sprockets 12a, 13a of the upper machine chamber 12 and the lower machine chamber 13, for example, the upper sprocket 12a.

  The sprocket 12a is rotated by the drive of the driving device 12b, and the driving force is transmitted to the chain 14 meshing with the sprocket. A number of steps 11 connected by the driving force transmitted to the chain 14 circulate between the entrance / exit of the upper machine room 12 and the entrance / exit of the lower machine room 13 while being guided by guide rails (not shown).

  An upper machine room 12 is provided at the upper end of the frame 15 (under the floor near the upper entrance). Although not shown, the main control unit 12m houses a drive device 12b of the upper machine room 12, a step drive device for driving the step 11, and a main control unit (main control panel). The step drive device has a drive motor as a drive source. The operation control device that controls the step drive device includes a main control unit 12m and an intermediate control unit 26 described later.

  A pair of skirt guards (not shown) are installed in the upper part of the frame 15 so as to oppose the left and right side surfaces of the step 11 along the moving direction of the step 11, and on the skirt guard, respectively. Is erected. A belt-like handrail 17 is mounted around the balustrade 16. The handrail 17 is a handrail gripped by a passenger on the step 11, and circulates around the balustrade 16 in synchronism with the movement of the step 11 by transmitting the driving force of the driving device 12 b, for example. A wall body 15 a is provided inside the frame body 15. The wall body 15a covers the step 11 and these moving mechanisms, and prevents noise from leaking to the outside. The wall body 15a may be abbreviated to the frame body 15 as an integral body.

  FIG. 2 is a cross-sectional view taken along line AA in FIG. Each step 11 is provided with a pair of drive rollers 21a and 21b and a pair of follow-up rollers 22a and 22b.

  In the frame 15, a pair of drive rails 23a and 24b for guiding the drive rollers 21a and 21b and a pair of follower rails 24a and 24b for guiding the follower rollers 22a and 22b are provided.

  A bracket is fixed to the outer side surface of the frame body 15 in the middle of the intermediate inclined portion of the escalator. An intermediate control unit 26 is provided in the bracket.

  The wall body 15a corresponding to the intermediate control unit 26 is provided with a door 27 that can be opened and closed. The state of the intermediate control unit 26 can be checked through the door 27. On the outer side surface of the frame 15 in the intermediate inclined portion, a similar escalator may not be placed on the side surface on which the door is provided. If it is an outer side surface, it is easy to open the door 27 of the wall 15a and see the operation heat generating device.

  The intermediate control unit 26 includes, for example, an inverter unit 30 as an operation heat generating device. FIG. 3 is a diagram illustrating a configuration example of the inverter unit 30. The inverter unit 30 has a function of converting power power supplied from the building into an arbitrary voltage and frequency. The inverter unit 30 includes a converter 31 and an inverter 32.

  As the converter 31, a diode converter or a transistor converter is used. The diode converter and the transistor converter generate a DC voltage from an AC current of a commercial power source (constant voltage, frequency: 50 Hz or 60 Hz). Further, the transistor converter has a function of returning regenerative energy to the power source. Furthermore, since the converter generates a DC voltage by switching an alternating current, the converter generates heat corresponding to the loss due to the switching.

  The inverter 32 generates an alternating current having an arbitrary voltage and frequency from the direct-current voltage generated by the converter 31 in order to efficiently generate a necessary torque by controlling a drive motor that is an alternating-current motor. Further, since the inverter 32 generates an alternating current by switching the direct current voltage, it generates heat corresponding to the loss due to the switching.

  In addition, since there is a support body for the handrail 17 and a support body for the balustrade 16 in the normal frame, the size and location of the inverter 32 provided in the intermediate control unit 26 may be limited. In this case, the inverter may be divided into a plurality of parts and provided in the frame of a part having a sufficient space.

  When the driving device 12b is in the upper machine room 12, the intermediate control unit 26 is preferably located as close as possible to the upper machine room 12 of the intermediate inclined portion of the escalator. This is because there is an advantage that the wiring between the main control unit and the main control unit is short.

  Here, an example will be described in which the intermediate control unit 26 includes the inverter unit 30 as an operation heating device, and the main control unit 12m includes a reactor and a regenerative resistor. However, in addition to the inverter unit 30, the intermediate control unit 26 includes a device for controlling the operation speed of the step 11, specifically an inverter and a converter, as well as a reactor 34 and a regenerative resistor 35 as shown in FIG. 4. But you can. Alternatively, only one of these may be included as the operation heat generating device. It is also possible to provide these operation heat generating portions separately on the side surface of the frame.

  The reactor 34 functions as a filter that prevents the harmonics and the surge voltage from flowing out so that the harmonics and the surge voltage generated by the operation of the inverter and the converter do not adversely affect the commercial power supply and the drive motor. Further, the reactor generates heat because the energy of the high frequency component absorbed as a filter is converted into heat.

  The regenerative resistor 35 returns from the drive motor when the drive motor is rotated by an external force at a speed faster than the speed at which it is going to be driven, such as when the escalator having a high boarding rate is lowered or stopped. Renewed energy is consumed instead of heat.

  Thus, the inverter 32, the converter 31, the reactor 34, and the regenerative resistor 35 arranged in the intermediate control unit 26 are all operation heat generating devices that generate heat during the operation. For this reason, it is preferable that at least one of these operation heat generating devices (for example, the inverter 32) is provided with a heat pipe for cooling.

  An operation control device that controls a step drive device that drives a step includes a main control unit 12 m and an intermediate control unit 26. The intermediate control unit 26 is connected to the main control unit 12m via a cable 38. A control signal from the intermediate control unit 26 is input to the drive motor via the main control unit 12m. However, it is also possible to connect the intermediate control unit 26 and the drive motor with a cable and directly input a control signal from the intermediate control unit 26 to the drive motor.

  The main control unit 12m is provided with an interface unit 36 (not shown in FIG. 3) that is communicably connected to the intermediate control unit 26. Alternatively, the interface unit is provided in the intermediate control unit 26 as shown in FIG. The interface unit 36 is connected to the main control unit 12m by a cable 38.

  Although not shown, the interface unit 36 has an operation unit for inputting parameter changes of the inverter 32 and the converter 31, and a display unit for confirming the states of the inverter 32 and the converter 31 in the upper machine room 12. Is provided. The main controller 12m has a microcomputer. A part of the wall 15a can be opened and the display on the display unit can be seen, which makes maintenance easier.

  In the escalator having such a structure, the intermediate control unit 26 is installed on the outer side of the step of the intermediate inclined portion in the length direction of the frame 15, and an inverter, a converter, a reactor, a regenerative resistor, etc. are installed in the intermediate control unit 11. Arranged the operation heating equipment. Therefore, it becomes possible to easily maintain the operation heat generating device.

  In addition, since the operation heat generating device is provided in the frame rather than the railing, the aesthetic appearance is not impaired even when the railing is made transparent.

  In this embodiment, since the operation heat generating device is provided in the intermediate inclined portion separately from the main control portion, the machine room near the upper / lower entrance / exit can be made smaller.

  Moreover, the heat generated from the operation heat generating devices such as the inverter, the converter, the reactor, and the regenerative resistor can be efficiently dissipated in the frame. Further, since the operation heat generating device is provided on the side surface of the step 11 and the surrounding air is agitated, the heat radiation efficiency of the operation heat generating device can be improved. Moreover, the temperature rise in the upper machine room or the lower machine room is also suppressed.

  Further, when the intermediate control unit 26 is inclined, the heat pipe provided in the operation heat generating device is also inclined, and the liquid (for example, distilled water) in the heat pipe is compared with the case where the heat pipe is arranged vertically. The surface area is enlarged. Thereby, thermal resistance falls and cooling efficiency improves.

  In the said embodiment, the case where it had an inverter unit and the case where it had an inverter unit, a reactor, and a regenerative resistor was demonstrated as an operation | movement heat generating apparatus incorporated in an intermediate | middle control part. However, the present invention can also be applied to the case where any one of these inverters, converters, reactors, and regenerative resistors is provided as an operation heating device in the intermediate control unit.

  In the embodiment described above, the case where the main control unit is provided in the upper machine room has been described. However, the present invention is also applicable when the main control unit is provided in the lower machine room and the steps are driven and controlled by the lower step drive control unit.

  ADVANTAGE OF THE INVENTION According to this invention, the escalator which made easy maintenance of the operation | movement heat generating apparatus which heat | fever-generates at the time of driving | operation operation | movement is obtained.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

10 .... Escalator 11 .... Step 12 .... Upper machine room 13 ... Lower machine room 12b ... Drive device 12m ... Main control unit 14 .... Chain 15. ... Frame body 15a ... Wall body 16 ... Balustrade 17 ... Hand rails 21a, 21b, 23a, 23b ... Drive rollers 22a, 22b, 24a, 24b ... Tracking Roller 26 ... Intermediate control unit 30 ... Inverter unit 31 ... Converter 32 ... Inverter 34 ... Reactor 35 ... Regenerative resistor 36- ... Interface part

An escalator according to an embodiment includes an endless step provided between an upper lift and a lower lift including an intermediate inclined portion, a main control unit including a step drive for driving the step, and both sides of the step. A balustrade erected on a pair of skirt guards provided so as to face each other, a handrail mounted around the balustrade , a frame body below the handrail and surrounding the step, and the frame body And an intermediate control unit that is provided on the outer side surface of the intermediate inclined portion of the step, is connected to the main control unit, and incorporates an operation heating device that generates heat during a driving operation.

Claims (5)

An endless step provided between the upper elevator opening including the intermediate inclined part and the lower elevator opening;
A main control unit including a step driving unit for driving the step;
A frame surrounding the steps;
An intermediate control unit that is provided inside the frame body, is provided on the outer side surface of the intermediate inclined portion of the step, is connected to the main control unit, and includes an operation heating device that generates heat during a driving operation;
An escalator equipped with.   The escalator according to claim 1, wherein the operation heat generating device is divided into a plurality of outer side surfaces of the frame body.   The escalator according to claim 1, wherein the operation heat generating device is provided so as to be openable from an outer side surface of the frame body.   The operation heat generating device is regenerated from an inverter that generates an alternating current by switching a direct current voltage, a converter that generates a direct current voltage from the alternating current, a reactor that prevents the passage of harmonics, and a drive motor that drives the steps. The escalator according to any one of claims 1 to 3, further comprising at least one regenerative resistor that replaces energy with heat.   The escalator according to claim 1, wherein the operation heat generating device is provided in an intermediate control unit, and the intermediate control unit includes an interface unit.

Images