KR102510538B1 - System for operating synchronous motor of escalator - Google Patents

Abstract

The present invention provides a permanent magnet synchronous motor driving system exclusively for escalators, which reduces a machine room space and weight. According to the present invention, the permanent magnet synchronous motor driving system exclusively for escalators comprises: a machine room disposed at the upper level of an escalator having a pair of steps rotated by connecting the lower level and the upper level, and having an installation space formed therein; a staple-shaped support unit disposed in the installation space; a rotating shaft disposed in the installation space and having both ends rotatably supported by both ends of the support unit; a pair of sprocket gears installed on both ends of the rotating shaft and engaged with a pair of steps, respectively; a synchronous motor installed on the rotating shaft and receiving a driving signal to rotate the rotating shaft; a brake unit disposed at both ends of the support unit to be adjacent to the pair of sprocket gears, and receiving a stop signal to pressurize the rotating shaft to stop rotation; and a control unit transmitting the drive signal to the synchronous motor and transmitting the stop signal to the brake unit.

Description

High-efficiency energy-saving direct-coupled drive system for escalator-only permanent magnet synchronous motor {System for operating synchronous motor of escalator}

The present invention relates to a permanent magnet synchronous motor driving system for an escalator, and more particularly, a synchronous motor is integrally configured with an axis that provides rotational force to a step to form a direct connection, thereby reducing the size of the machine room of the escalator while maintaining it. It relates to a permanent magnet synchronous motor drive system exclusively for escalators with a high-efficiency energy-saving direct drive type that can facilitate maintenance.

Typically, escalators are installed in buildings such as department stores, subways, officetels, airports, and are widely used as devices for conveniently moving passengers from one point to another.

Escalators are mainly used in cases where passengers have to use the stairs to solve the inconvenience of connecting a point with a difference in height or between different floors.

1 is a view showing a driving unit installed in a machine room applied to a conventional escalator.

Referring to Figure 1, in the conventional escalator, a machine room (1) is disposed on the upper floor. A certain space is formed inside the machine room.

A rotating shaft 10 having a certain length is disposed in the machine room 1. Both ends of the rotating shaft 10 are rotationally supported by the top track module 20 .

A pair of sprocket gears 30 are installed at both ends of the rotating shaft 10 . A power transmission gear 40 is installed on each of the pair of sprocket gears 30 .

The pair of sprocket gears 30 are meshed with the step chain.

In addition, an upright induction motor 50 is disposed behind the rotating shaft 10 . The induction motor 50 includes a reduction gear (not shown). In the induction motor 50, a rotating shaft protrudes along a horizontal direction.

The shaft is connected to a gear, and the gear forms a structure connected to the power transmission gear 40 through a power transmission belt.

Also, in the machine room 1, a control panel 60 is disposed near the induction motor 50. The control panel 60 performs a function of controlling driving of the induction motor 50 .

As such, in the related art, a rotational shaft 10 to which a pair of sprocket gears 30 are installed, an induction motor 50 disposed at a position spaced apart from the rotational shaft 10, a gear for power transmission, a power transmission belt and power Due to the arrangement of the transmission gear 40, there is a problem that the internal space of the machine room 1 must be increased to a certain level or more.

Accordingly, in the related art, as a machine room is enlarged and a plurality of parts for power transmission are disposed in a limited space, maintenance work is difficult.

In addition, there is a problem in that mechanical loss occurs as the power used for step driving of the escalator is transmitted to the induction motor -> shaft -> gear -> power transmission belt -> power transmission gear -> sprocket gear -> step.

In addition, when an induction motor is used as one, it is transmitted through one sprocket gear and rotates the rotation shaft through it to rotate the other sprocket gear, so there is a possibility of loss of rotational force depending on the length of the rotation shaft. When it is increased beyond a certain level, there is also a problem that deformation of the rotating shaft may occur, causing physical deformation between the steps on both sides.

In order to solve this problem, conventionally, a method of configuring two induction motors and rotating each sprocket gear using the two induction motors has been introduced, but this also increases the space in the machine room as the number of induction motors increases. There is an increasing problem.

In addition, when two induction motors are used, if the control panel does not control the driving of each induction motor to be consistent, as described above, the rotational driving between the steps on both sides is not uniform, which may cause physical deformation.

In addition, in the prior art, the rotation shaft and the induction motor are spaced apart from each other, and the induction motor is installed on the floor of the machine room as it is. Therefore, in the prior art, vibration due to driving of the induction motor is transmitted to the machine room floor and the vibration is transmitted to the power transmission belt, resulting in power transmission loss and mechanical abnormality.

In addition, in the prior art, when replacing an induction motor due to problems such as vibration and mechanical failure, maintenance is difficult and time consuming as the machine room cover is opened and all other parts connected to the induction motor are dismantled to replace the induction motor. In addition to this increasing problem, there is also a problem in which work is performed after the administrator recognizes the time of failure.

Republic of Korea Patent Publication No. 10-2012-0031705 (published on April 04, 2012)

The present invention has been made to solve the above problems, and the object of the present invention is as follows.

An object of the present invention is a permanent magnet synchronous motor drive system exclusively for escalators of a high-efficiency energy-saving direct drive type that can reduce and lighten the space of a machine room by directly connecting a synchronous motor to a rotating shaft that rotates steps inside an escalator machine room. is to provide

Another object of the present invention is a permanent dedicated escalator of a high-efficiency energy-saving direct drive type that can achieve uniform rotation of steps on both sides by uniformly transmitting rotational force to both sides of the rotation shaft by directly connecting a synchronous motor to an air motor on a rotation shaft. It is to provide a magnet synchronous motor drive system.

Another object of the present invention is to provide a replacement synchronous motor in the internal space of the machine room, monitor the operating state of the synchronous motor in real time, and immediately replace the corresponding synchronous motor with another synchronous motor when a problem occurs in the synchronous motor. It is to provide a permanent magnet synchronous motor drive system exclusively for escalators of a high-efficiency energy-saving direct drive type that can provide

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention not mentioned above can be understood by the following description and will be more clearly understood by the examples of the present invention. Furthermore, it will be readily apparent that the objects and advantages of the present invention may be realized by means of the instrumentalities and combinations indicated in the claims.

In order to achieve the above objects, the present invention provides a permanent magnet synchronous motor drive system for escalators.

'형상의 지지부와; 상기 설치 공간에 배치되며, 양단이 상기 지지부의 양단에 회전 지지되는 회전축과; 상기 회전축의 양단에 설치되며, 상기 한 쌍의 스텝 각각에 기어치 연결되는 한 쌍의 스프라켓 기어와; 상기 회전축 상에 설치되며, 구동 신호를 받아 상기 회전축을 회전시키는 동기 전동기와; 상기 한 쌍의 스프라켓 기어에 인접하도록 상기 지지부의 양단에 배치되어, 정지 신호를 받아 상기 회전축을 가압하여 회전을 정지시키는 브레이크 부; 및 상기 동기 전동기로 구동신호를 전송하고, 상기 브레이크 부로 상기 정지 신호를 전송하는 제어부를 포함한다.The permanent magnet synchronous motor driving system for the escalator includes a machine room disposed on an upper part of an escalator having a pair of steps connected to a lower part and an upper part and rotating, and having an installation space therein; placed in the installation space '

'with the support of the shape; a rotating shaft disposed in the installation space and having both ends rotatably supported at both ends of the support part; a pair of sprocket gears installed at both ends of the rotating shaft and gear teeth connected to each of the pair of steps; a synchronous motor installed on the rotating shaft and receiving a drive signal to rotate the rotating shaft; a brake unit disposed at both ends of the support unit so as to be adjacent to the pair of sprocket gears and stopping rotation by pressing the rotation shaft upon receiving a stop signal; and a control unit transmitting a driving signal to the synchronous motor and transmitting the stop signal to the brake unit.

Here, a pair of circular breaking members are installed on the rotating shaft,

Preferably, each of the pair of braking members is integrally formed on a side portion of the pair of sprocket gears.

And each of the pair of breaking parts,

It is preferable to include a pressing module that presses outer circumferences of the pair of braking members under the control of the control unit.

In addition, the circumferential size of the synchronous motor,

It is preferable to be smaller than the circumferential size of the pair of sprocket gears.

In addition, on the axis of rotation,

It is preferable to provide an auxiliary gear disposed in the vicinity of the synchronous motor.

In addition, positioning holes are disposed at multiple positions of the rotation shaft,

At both sides of the synchronous motor, a pair of fixing members having a cylindrical shape in which fixing holes are formed are formed,

The fixing hole formed in the pair of fixing members coincides with one of the positioning holes,

Preferably, one of the fixing hole and the positioning hole formed in the pair of fixing members is fastened through a fastening member.

In addition, the synchronous motor,

Transmitting a driving signal according to driving to the control unit through a wireless or wired communication method;

The control unit,

When the transmitted driving signal is out of the range of the preset normal driving signal, information on the motor abnormality is transmitted to the management server through a wireless communication method,

The pair of braking units are driven to stop the rotation of the rotating shaft.

In addition, in the machine room,

Preferably, a vibration absorbing unit is disposed to absorb vibration by elastically gripping the lower portion of the synchronous motor.

In particular, the rotation shaft has a pair of first rotation shafts connected to the center of the pair of sprocket gears, and a second rotation shaft detachably connected to an end of the pair of first rotation shafts and having the synchronous motor installed thereon.

Polygonal coupling grooves are formed at ends of the pair of first rotational shafts.

At both ends of the second rotational shaft, cylinders having an expandable shaft are respectively installed.

A polygonal coupling protrusion is formed at the shaft end of each of the cylinders. As the shaft protrudes, the coupling protrusion is inserted into the coupling groove and coupled thereto.

Here, a replacement device for replacing the synchronous motor is disposed on the floor of the inner space of the machine room.

The replacement device includes a movable rail, a first replacement unit movably disposed on the movable rail, a second replacement unit movably disposed on the movable rail at a distance from the first replacement unit, and a control unit. It has first and second moving motors for moving the first and second replacing parts according to a control signal.

The first replacement part has a first lifting cylinder having a first lifting shaft to be moved up and down, and a first clamp installed on an upper end of the first lifting shaft. The first clamp may clamp the synchronous motor according to the control of the control unit.

The second body part has a second lifting cylinder having a second lifting shaft to be moved up and down, and a second clamp installed on an upper end of the second lifting shaft.

The replacement synchronous motor installed on the replacement second rotating shaft is clamped in the second clamp. At both ends of the replacement second rotating shaft, replacement cylinders are installed so that the replacement shaft can expand and contract. A replacement coupling protrusion having a polygonal shape that can be coupled to the coupling groove is installed on the replacement shaft.

After the control unit stops the rotation of the rotating shaft by driving the pair of braking units when the transmitted driving signal is out of the range of the preset normal driving signal,

lifting the first lifting shaft to clamp the synchronous motor using the first clamp;

Separating the pair of first rotational shafts and the second rotational shafts by inserting the shafts of the respective cylinders and separating the coupling protrusions from the coupling grooves;

lowering the first lifting shaft to move the synchronous motor clamped to the first clamp downward;

moving the first replacement part along the moving rail to a preset standby position using the moving motor;

moving the second replacement unit to a preset replacement position along the moving rail by using the moving motor;

The second lifting shaft is raised using the second lifting cylinder to position the replacement second rotation shaft on the same axis as the pair of first rotation shafts,

The replacement shaft of each of the replacement cylinders protrudes to both sides to engage the replacement coupling protrusions into the replacement coupling grooves formed at the ends of the pair of first rotation shafts;

After the clamping state of the second clamp is released, the second lifting shaft is returned to its original position using the second lifting cylinder,

The stopped rotation of the rotating shaft is started using the pair of braking units.

In addition, in the machine room,

A vibration absorbing unit for absorbing vibration by elastically gripping the lower portion of the synchronous motor is disposed,

The vibration absorbing part is installed on the first clamp.

In addition, in the inner space of the machine room,

An auxiliary motor having a drive gear connected to the auxiliary gear in a gear tooth manner is provided,

On one of the pair of first rotation shafts,

A rotation speed measuring device is installed to measure the number of rotations of any one of the first rotation shafts and transmit the measured number of rotations to the control unit,

The control unit,

Controlling the rotation of the drive gear using the auxiliary motor when the measured number of rotations is out of the range of the preset reference number of rotations;

By rotating the auxiliary gear through rotation of the driving gear, the number of revolutions of the rotation shaft is variably controlled.

Through the means of solving the above problems, the present invention has an effect of reducing and lightening the space of the machine room by directly connecting the synchronous motor to the rotating shaft for rotating the step inside the machine room of the escalator.

In addition, the present invention has the effect of uniformly transmitting the rotational force to both sides of the rotation shaft by directly connecting the synchronous motor to the air motor on the rotation shaft to achieve uniform rotation of the steps on both sides.

In addition, the present invention provides a replacement synchronous motor in the internal space of the machine room, monitors the operating state of the synchronous motor in real time, and can immediately replace the corresponding synchronous motor with another synchronous motor when a problem occurs in the synchronous motor. have an effect

In addition to the effects described above, specific effects of the present invention will be described together while explaining specific details for carrying out the present invention.

1 is a conventional

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings so that those skilled in the art can easily carry out the present invention.

This invention may be embodied in many different forms and is not limited to the embodiments set forth herein.

In order to clearly describe the present invention, parts irrelevant to the description are omitted, and the same reference numerals are assigned to the same or similar components throughout the specification.

Hereinafter, the provision or arrangement of an arbitrary element on the "upper (or lower)" or "upper (or lower)" of the base material means that the arbitrary element is provided or disposed in contact with the upper (or lower) surface of the base material. means that

In addition, it is not limited to not including other components between the substrate and any components provided or disposed on (or under) the substrate.

Next, a permanent magnet synchronous motor driving system for escalators of the present invention will be described with reference to the accompanying drawings.

2 to 4 are side views showing an escalator-only permanent magnet synchronous motor driving system according to the present invention.

Referring to FIG. 2, the escalator-only permanent magnet synchronous motor driving system according to the present invention includes a machine room 100, a support part 200, a rotating shaft 300, a pair of sprocket gears 400, and a synchronous motor ( 500), a braking unit 600, and a control unit 700.

The above configurations are described.

Referring to Figures 2 to 4, the machine room 100 according to the present invention is disposed in the upper part of the escalator having a pair of steps (not shown) rotated by connecting the lower part and the upper part, and an installation space is formed therein.

'형상으로 형성되며, 상기 기계실(200)의 설치 공간에 별도의 고정 수단을 통해 고정될 수 있다.The support part 200 is disposed in the installation space '

It is formed in a 'shape' and can be fixed to the installation space of the machine room 200 through a separate fixing means.

The rotary shaft 300 is disposed in the installation space of the machine room 100, and both ends are rotatably supported at both ends of the support part 200 that are bent.

The pair of sprocket gears 400 are installed at both ends of the rotating shaft 300 and gear teeth are connected to each of the pair of steps.

The synchronous motor 400 is installed on the rotating shaft 300 and rotates the rotating shaft 300 by receiving a driving signal. Through this, the synchronous motor 500 is installed in a state in which it is directly connected to the rotation shaft 300, and a space gain can be obtained.

The pair of brake parts 600 are disposed at both ends of the support part 200 so as to be adjacent to the pair of sprocket gears 400, and pressurize the rotating shaft 300 to stop rotation when a stop signal is received. do

The control unit 700 transmits a drive signal to the synchronous motor 500 and transmits the stop signal to the brake unit 600 .

The pair of brake units 600 include rotation support members 610 installed at both ends of the support unit 200 and a pressing module 620 .

The press module 620 has a pair of press members 621 and a press cylinder 622 . One end of the pair of pressing members 621 may be rotatably connected to the rotation support member 610 in a hinged manner.

The pair of pressing members 610 are disposed to surround upper and lower portions of the circular breaking member 301 disposed on both ends of the rotating shaft 300 .

The pressure cylinder 622 is fixed to the support part 200 and has a pressure shaft 622a that expands and contracts according to a control signal from the controller 700 .

The lower end of the pressure cylinder 622 is fixed on the pressure member 621 located at the lower part of the pair of pressure members 621 .

The upper end of the pressing shaft 622a is fixed to the pressing member 621 located at the upper part of the pair of pressing members 621 .

Through this, when the pressing shaft 622a of the pressing cylinder 622 is inserted, the pair of pressing members 621 press the outer circumference of the corresponding braking member 301 to achieve a brake operation.

In addition, each of the pair of braking members 301 is integrally formed on the side of the pair of sprocket gears 400 .

In addition, the synchronous motor 500 may have a circumferential size smaller than that of the pair of sprocket gears 400 .

In addition, an auxiliary gear 302 disposed near the synchronous motor 500 is installed on the rotating shaft 300 .

5 is a diagram showing an example of another fixing of a synchronous motor according to the present invention.

Referring to FIG. 5 , positioning holes 303 are disposed at multiple positions of the rotational shaft 300 according to the present invention.

At both sides of the synchronous motor 500, a pair of fixing members 510 having a cylindrical shape in which fixing holes 511 are formed are formed.

The fixing hole 511 formed in the pair of fixing members 510 coincides with any one of the positioning holes 303 .

Any one of the fixing hole 511 and the positioning holes 303 formed in the pair of fixing members 510 may be fastened through a fastening member (not shown).

Through this, the synchronous motor 500 can variably move and fix the installation position on the rotation shaft 300 .

The synchronous motor 500 configured as described above may transmit a driving signal according to being driven to the control unit 700 through a wireless or wired communication method.

The control unit 700 transmits information on motor failure to the management server 800 through a wireless communication method when the transmitted driving signal is out of the range of a preset normal driving signal.

Subsequently, the control unit 700 may stop the rotation of the rotating shaft by driving the pair of braking units 600 .

6 is a view showing an example in which the rotating shaft according to the present invention is detachable. 7 is a view showing a state in which the second rotational shaft is separated from the first rotational shaft.

6 and 7, the rotation shaft 300 according to the present invention includes a pair of first rotation shafts 310 connected to the center of the pair of sprocket gears 400, and the pair of first rotation shafts 310 ) Is detachably connected to the end of the synchronous motor 500 and has a second rotational shaft 320 installed thereon.

A polygonal coupling groove 311 is formed at an end of the pair of first rotational shafts 310 .

Cylinders 330 having an expandable shaft 331 are respectively installed at both ends of the second rotational shaft 320 .

A polygonal coupling protrusion 321 is formed at an end of the shaft 331 of each cylinder 330 . As the shaft 331 protrudes, the coupling protrusion 321 is inserted into the coupling groove 311 and coupled thereto.

8 to 11 are diagrams showing a process in which a synchronous motor is replaced through a replacement device according to the present invention.

Referring to FIG. 8 , a replacement device 900 for replacing the synchronous motor 500 is disposed at the bottom of the inner space of the machine room 100 according to the present invention.

The replacement device 900 includes a movable rail 930, a first replacement part 910 movably disposed on the movable rail 930, and a gap between the first replacement part 910 and the movable rail The second replacement part 920 movably disposed in 930, and the first and second moving motors for moving the first and second replacement parts 910 and 920 according to a control signal from the control unit 700 ( 940, 950).

The first replacement unit 910 includes a first lifting cylinder 911 having a first lifting shaft 911a that moves up and down, and a first clamp 912 installed at an upper end of the first lifting shaft. The first clamp 912 may clamp the synchronous motor 500 under the control of the control unit 700 .

The second replacement part 920 has a second lifting cylinder 921 having a second lifting shaft 921a that is lifted, and a second clamp 922 installed on the upper end of the second lifting shaft 921a. .

The replacement synchronous motor 500' installed on the replacement second rotary shaft 320' is clamped in the second clamp 922. Replacement cylinders 330 to which replacement shafts 331' are stretchably installed are installed at both ends of the replacement second rotary shaft 320'. A replacement coupling protrusion 321' having a polygonal shape that can be coupled to the coupling groove 311 is installed on the replacement shaft 331'.

Next, a process of replacing a synchronous motor through a replacement device according to the present invention will be described.

Referring to FIGS. 8 to 11 , the control unit 700 according to the present invention drives the pair of braking units 900 when the above-described driving signal transmitted is out of the range of the preset normal driving signal to control the rotating shaft. After stopping the rotation of 300, the first lifting shaft 911a is raised and the synchronous motor 500 is clamped using the first clamp 912.

Subsequently, the control unit 700 inserts the shaft 331 of each cylinder 330 to separate the coupling protrusion 321 from the coupling groove 311, thereby rotating the pair of first and second rotation shafts. separate

The control unit 700 lowers the first lifting shaft 911a to move the synchronous motor 500 clamped to the first clamp 912 downward, and moves the first replacement unit 910 to the first movement. The motor 940 is used to move the moving rail 930 to a preset standby position, and the second replacement part 920 is moved to the moving rail 930 using the second moving motor 950. It moves to the preset replacement position according to the

Here, the standby position and replacement position may be preset in the control unit 700 .

The controller 700 raises the second lifting shaft 921a using the second lifting cylinder 921 so that the replacement second rotational shaft 320' is coaxial with the pair of first rotational shafts 310. place on the line.

Subsequently, the controller 700 protrudes the replacement shafts 311' of each replacement cylinder 330' to both sides to form the replacement coupling protrusions 321' formed at the ends of the pair of first rotational shafts 310. It is fitted into the coupling groove 311.

Further, the control unit 700 releases the clamping state of the second clamp 922 and returns the second lifting shaft 921a to its original position using the second lifting cylinder 921, The stopped rotation of the rotating shaft 300 using the braking unit 600 may be started.

Through this, it is possible to automatically replace a new replacement synchronous motor that is replaced after removing the faulty synchronous motor.

In the present invention, when an error occurs in the synchronous motor, it is possible to replace the synchronous motor with another synchronous motor without opening the machine room, so that maintenance time due to manual work can be prevented from being prolonged.

In addition, a vibration absorbing part (not shown) for absorbing vibration by elastically gripping the lower part of the synchronous motor 500 is disposed in the machine room 100, and the vibration absorbing part is installed on the inner surface of the first clamp 912. It can be. Through this, vibration caused by the rotation shaft 300 rotated during operation of the synchronous motor 500 can be efficiently absorbed to prevent mechanical failure.

The above-described first and second clamps may have the same configuration.

Although not shown in the drawing, the first and second clamps have a seating surface on which the lower end of the synchronous motor is seated, and a pair of clamp bodies disposed to face each other and a pair of clamp bodies receiving a control signal from the controller It may be provided with a telescopic cylinder to be in close contact or spaced apart. Accordingly, when the pair of clamp bodies come into close contact, the seated synchronous motor may be clamped.

12 is a diagram schematically illustrating an example of correcting the number of revolutions of a rotation shaft through rotation of an auxiliary gear.

Referring to FIG. 12 , an auxiliary motor 350 having a driving gear 351 connected to the auxiliary gear 302 in a gear tooth manner is provided in the inner space of the machine room 100 .

Rotation speed measuring device 1100 for measuring the number of rotations of any one of the pair of first rotation shafts 310 and transmitting the measured number of rotations to the control unit 700 ) is installed.

The control unit 700 controls the rotation of the drive gear 351 using the auxiliary motor 350 when the measured rotation speed is out of the preset reference rotation speed range, and the driving gear 351 The number of rotations of the rotating shaft 300 may be variably controlled by rotating the auxiliary gear 302 through the rotation of .

According to the above configuration and operation, the present invention can reduce and lighten the space of the machine room by directly connecting the synchronous motor to the rotating shaft for rotating the step inside the machine room of the escalator.

In addition, according to the present invention, the synchronous motor is directly connected to the air motor on the rotating shaft to uniformly transmit the rotational force to both sides of the rotating shaft so that the rotation of the steps on both sides can be made uniform.

In addition, the present invention provides a replacement synchronous motor in the internal space of the machine room, monitors the operating state of the synchronous motor in real time, and can immediately replace the corresponding synchronous motor with another synchronous motor when a problem occurs in the synchronous motor. there is.

The present invention is not limited to the specific preferred embodiments described above, and various modifications can be made by anyone skilled in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes are within the scope of the claims.

100: machine room
200: support
300: axis of rotation
301: breaking member
302: auxiliary gear
303: positioning hole
310: 1st rotating shaft
311: coupling groove
320: 2nd rotation axis
321: coupling protrusion
330: cylinder
331 axis
350: auxiliary motor
351: drive gear
400: sprocket gear
500: synchronous motor
510: fixed member
511: fixed hole
600: breaking part
610: rotation support member
620: pressurization module
621: pressing member
622: pressurized cylinder
622a: pressing shaft
700: control unit
800: server
900: replacement device
910: first replacement part
911: first lifting cylinder
911a: first lifting shaft
912: first clamp
920: second replacement part
921: second lifting cylinder
921a: second lifting shaft
922: 2nd clamp
1100: RPM meter

Claims (8)

A machine room disposed in the upper part of an escalator having a pair of steps connected to a lower part and an upper part and rotating, and having an installation space therein;
placed in the installation space '

'Support of shape;
a rotating shaft disposed in the installation space and having both ends rotatably supported at both ends of the support part;
a pair of sprocket gears installed at both ends of the rotating shaft and gear teeth connected to each of the pair of steps;
a synchronous motor installed on the rotating shaft and receiving a drive signal to rotate the rotating shaft;
a brake unit disposed at both ends of the support unit so as to be adjacent to the pair of sprocket gears and stopping rotation by pressing the rotation shaft upon receiving a stop signal; and,
A permanent magnet synchronous motor driving system for escalators, characterized in that it comprises a control unit for transmitting a drive signal to the synchronous motor and transmitting the stop signal to the brake unit.
According to claim 1,
A pair of circular breaking members are installed on the rotating shaft,
Each of the pair of braking members is a permanent magnet synchronous motor drive system for escalators, characterized in that integrally formed on the side of the pair of sprocket gears.
According to claim 2,
Each of the pair of breaking parts,
A permanent magnet synchronous motor driving system for an escalator, characterized in that it comprises a pressing module for pressing the outer circumference of the pair of braking members under the control of the control unit.
According to claim 1,
The circumferential size of the synchronous motor is
A permanent magnet synchronous motor drive system for escalators, characterized in that formed smaller than the circumferential size of the pair of sprocket gears.
According to claim 1,
On the axis of rotation,
A permanent magnet synchronous motor drive system for escalators, characterized in that an auxiliary gear disposed in the vicinity of the synchronous motor is installed.
According to claim 1,
Positioning holes are disposed at a plurality of positions of the rotating shaft,
At both sides of the synchronous motor, a pair of fixing members having a cylindrical shape in which fixing holes are formed are formed,
The fixing hole formed in the pair of fixing members coincides with one of the positioning holes,
The permanent magnet synchronous motor driving system for escalators, characterized in that one of the fixing hole and the positioning hole formed in the pair of fixing members is fastened through a fastening member.
According to claim 5,
The synchronous motor,
Transmitting a driving signal according to driving to the control unit through a wireless or wired communication method;
The control unit,
When the transmitted driving signal is out of the range of the preset normal driving signal, information on the motor abnormality is transmitted to the management server through a wireless communication method,
A permanent magnet synchronous motor driving system for escalators, characterized in that for stopping the rotation of the rotating shaft by driving the pair of braking units.
According to claim 7,
In the machine room,
A permanent magnet synchronous motor drive system for escalators, characterized in that a vibration absorbing unit for absorbing vibration by elastically gripping the lower portion of the synchronous motor is disposed.

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