KR20190018981A - A Sub-break System In An Escalator - Google Patents

Abstract

The present invention relates to an escalator auxiliary brake system. According to the present invention, the escalator auxiliary brake system comprises: a motor driving unit including a drive motor and a main brake which performs braking of the drive motor; and a step driving unit including a terminal gear which receives a driving force of the motor driving unit by a driving chain, step chain sprockets of both sides which are coaxial with the terminal gear and integrally rotate, and a shaft which connects the step chain sprockets of both sides so as to integrally rotate. The escalator auxiliary brake system includes: a torque regulating gear unit receiving a rotational moment of a front end connected to the step driving unit and increasing the number of rotations of a rear end to reduce a braking torque; and an auxiliary brake including a brake drum which is provided at a rear end of the torque regulating gear unit and rotates by the increased number of rotations and a brake lever which selectively brakes the brake drum to brake the escalator. According to the present invention, escalator emergency braking can be stably and safely performed.

Description

A Sub-break System In An Escalator < RTI ID = 0.0 >

The present invention relates to an escalator subordinate brake system, and more particularly, to an escalator subordinate brake system which includes a torque regulator for reducing a braking torque and an auxiliary brake at a rear end thereof, thereby minimizing the required braking force, To an escalator auxiliary brake system capable of increasing the utilization of the space in which the escalator is installed, while stably and safely performing the escalator emergency braking.

The operation sequence from the driving of the horizontal moving motor 18 to the driving of the step 120 in the conventional horizontal escalator auxiliary braking apparatus shown in Figs. 1 to 4 will be described below.

The power of the motor 18 of the horizontal moving machine is transmitted to the terminal gear 90 by the drive sprocket 70 and the drive chain 80. When the drive chain 80 is normally connected, The process of stopping is as follows.

The main brake lever 30 is opened in accordance with the horizontal walk controller driving command and at the same time the power of the motor 18 is turned on to start the rotation of the motor 18, the decelerator 50 connected to the motor 18 is rotated, The drive sprocket 70 installed in the drive sprocket 50 also rotates together.

The drive sprocket 70 is connected to the terminal gear 90 by the drive chain 80 to transmit the power and rotates together with the step chain sprocket 100 coaxially installed to rotate integrally with the terminal gear 90 .

The step chain 110 is connected to the step chain sprocket 100 and since the step 120 is connected to the step chain 110, the step 120 is also interlocked to move the passenger.

On the contrary, when the horizontal walker stop command is issued, the motor power source and the brake coil power supply are simultaneously shut off, and the motor 18 is gradually stopped by the lining friction attached to the brake lever 30, The drive sprocket 70, the drive chain 80, the terminal gear 90, the step chain sprocket 100, the step chain 110, and the step 120 in the same manner as when starting the operation, The horizontal walker is gradually stopped.

Since the power transmission for driving and stopping the horizontal moving machine is performed by the drive chain 80, when breakage occurs in the drive chain 80, the brake drum 20 and the brake lever 30, which are attached to the brake drum 20 and the brake lever 30, The step chain sprocket 100, the step chain 110, and the step chain 90, which are connected to the same axis, can not be stopped because the terminal gear 90 can not be stopped by the break of the drive chain 80 even if the motor 18 is stopped by the lining. The step 120 can not be stopped and the step 120 flows downward.

However, in order to prevent the horizontal walker from flowing down, an auxiliary brake 130 is installed on one side of the terminal gear 90 so that the drive chain 80 is broken, The terminal gear 90 can be stopped.

4 includes a disc brake 1 160 for stopping the terminal gear 90 and the step chain sprocket 100 and a disc brake 1 160 for stopping the disc brake 2 170 and the disc brake 100. The auxiliary brake 130 of the conventional walk- An auxiliary brake latch 140 for stopping the rotation and an auxiliary brake solenoid control for operating the auxiliary brake latch 140. [

4, a brake lining is provided on each contact surface of the disc brakes 1, 2, and 3, the disc brake 3 is in contact with the disc brakes 1 and 2, and the auxiliary brake latch 40 A concavo-convex structure is formed. When the auxiliary brake latch 140 is operated, the disc brake 1, 2, and 3 are attached to the terminal gear 90 and the step chain 90 by a constant friction force, The sprocket 100 is stopped.

For example, when the drive chain breaks due to any cause during the normal operation of the moving walk, the break detection switch 27 of the drive detects the break and inputs a signal to the operation control unit 10, and the auxiliary brake solenoid control unit 15, Operates the auxiliary brake latch through the auxiliary brake solenoid to stop the auxiliary brake 3 (180). That is, the disc brake 1 (160) and the disc brake 1 (170) continue to rotate by the rotational inertia together with the terminal gear 90 and the step chain sprocket 100, but are rapidly decelerated by the lining friction force with the disc brake 3 .

However, the following problems are posed in the construction of the conventional horizontal walker auxiliary brake.

As can be seen from the flowchart shown in FIG. 5, the braking distance of the auxiliary brake 130 of the moving walker varies depending on the installation angle of the moving walker, the passenger load, the traveling direction, and the traveling speed boarding the step. For example, when there are few passengers in the ascending operation or fewer passengers in the descending operation, it is possible to stop a little smoothly. However, when there are many passengers in the ascending operation, There is a danger of a safety accident because the braking distance becomes long.

That is, since the frictional force of the spring 210 of the auxiliary brake 130 is fixed constantly and is set independent of the step or the moving direction of the step, the deviation of the slip distance after the operation of the auxiliary brake latch becomes severe, I have a risk.

On the other hand, the solenoid control of the latch operation is normally operated. However, the solenoid operation may not be performed according to the system condition. If the operation is not performed properly, the auxiliary brake can not be performed properly in case of breakage of the drive chain. The risk of accidents is large, and an alternative is needed.

On the other hand, the conventional invention described in Korean Patent No. 10-1067756 (entitled "Hydraulic emergency stop and safety brake control device for escalator for heavy load") is constituted by an hydraulic system of an auxiliary brake of a horizontal walker. % Due to the hydraulic pressure, the capacity of the hydraulic pressure increases in the case of a high-load moving walkway, the volume of the hydraulic system becomes large, the system construction cost rises, and the space configuration becomes difficult.

In addition, since the conventional horizontal walker auxiliary braking system uses a battery to normally operate the hydraulic system in case of interruption of the main power source due to a power failure, the system configuration due to the installation of the accumulator becomes complicated and the system construction cost increases .

In addition, when the hydraulic brake system of the above-described conventional moving type traveling vehicle fails to properly transmit the hydraulic pressure to the disc brake of the auxiliary brake due to an abnormality in the hydraulic system, there arises a problem that the possibility of safety accident is increased due to an incapable auxiliary brake operation.

In addition, in the conventional auxiliary brake system, if the escalator is caused to reverse the running direction or to overspeed due to some cause, the escalator must be stopped safely by the auxiliary brake operation. However, if there is only one auxiliary brake failure, Or safety accidents due to overspeed occur.

In addition, since the escalator auxiliary brake system is required to be installed only in the upper machine room of the escalator, it is impossible to install the escalator in the existing escalator due to the space problem, or to maintain the space In addition to the risk of safety accidents due to the narrowness of the escalator, it is necessary to secure a space for installing an auxiliary brake even in a newly installed escalator.

In addition, the conventional escalator auxiliary brake system has a risk of a safety accident due to the operation of the auxiliary brake because the braking force is not controlled according to the traveling direction, the traveling speed and the load of the passenger because the auxiliary brake braking force is concentrated in only one place.

Further, in order to secure the braking force of the auxiliary brake, the conventional braking system of the conventional escalator must develop each auxiliary brake device corresponding to the layer height or step width according to the step width and the floor height of the escalator, .

In the conventional escalator auxiliary brake system, when a ratchet is used for braking, there is always a risk of a passenger's accident due to a momentary impact at the moment when the ratchet operates.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an escalator which is capable of stably and safely performing an emergency braking operation of an escalator by connecting a torque regulator unit to an escalator step drive unit and installing an auxiliary brake at a rear end thereof, It is possible to implement an escalator auxiliary brake system capable of increasing utilization.

According to another aspect of the present invention, there is provided an escalator auxiliary brake system including a motor driving unit including a driving motor and a main brake for performing braking of the driving motor, a terminal gear receiving a driving force of the motor driving unit via a driving chain, The present invention relates to an auxiliary brake system for an escalator having an escalator including a stepping sprocket installed coaxially with a terminal gear and integrally rotating with a step chain sprocket on both sides of the step chain sprocket, A torque regulator unit for receiving a rotational moment of a front end connected to the step drive unit and increasing a rotational speed of a rear end to reduce a braking torque; And an auxiliary brake installed at a rear end of the torque regulating unit to rotate by an increased number of revolutions and a brake lever for selectively braking the brake drum to brake the escalator.

 The escalator auxiliary brake system may include a braking unit that connects the step drive unit and the torque regulator unit, and the braking unit includes a braking sprocket installed on the shaft; A driven sprocket provided at a front end of the torque regulating member; And a braking chain connecting the braking sprocket and the driven sprocket.

Wherein each of the braking sprocket, the braking chain, the follower sprocket, the torque regulator, and the sub-brakes are each provided with two sets of the braking sprocket, the braking chain, the driven sprocket, the torque regulator, Are provided so as to correspond to the left and right sides.

Wherein each of the torque regulator unit and the sub-brakes is provided with two sets, and the respective sets of the torque regulator unit and the sub-brakes are provided so as to correspond to the right and left sides.

One of the torque regulator units is provided at the center, and the auxiliary brakes are provided on both sides of the rear end of the torque regulator.

According to another aspect of the present invention, there is provided an escalator auxiliary brake system including a motor driving unit including a driving motor and a main brake for performing braking of the driving motor, a terminal gear receiving a driving force of the motor driving unit via a driving chain, The present invention relates to an auxiliary brake system for an escalator having an escalator including a stepping sprocket installed coaxially with a terminal gear and integrally rotating with a step chain sprocket on both sides of the step chain sprocket, A first torque regulator unit that receives the rotational moment of the front end connected to the step drive unit and increases the rotational speed of the rear end first to reduce the braking torque; A second torque regulator unit that receives the rotational moment of the front end connected to the rear end of the first torque regulator unit and increases the rotational speed of the rear end secondarily to reduce the braking torque; A brake drum provided at a rear end of the second torque regulating part and rotated by an increased number of revolutions in first and second order, and an auxiliary brake including a brake lever selectively holding the brake drum to brake the escalator .

Wherein the escalator auxiliary brake system includes a braking unit that connects the step drive unit and the first torque adjuster unit, and the braking unit includes: a braking sprocket installed on the shaft; A driven sprocket disposed at a front end of the first torque regulating member; And a braking chain connecting the braking sprocket and the driven sprocket.

Wherein the braking sprocket, the braking chain, the first torque regulator, the second torque regulator, and the sub-brakes are each provided for each of the braking sprocket, the braking chain, the first torque regulator, And the respective sets of the regulator unit and the sub-brakes are provided so as to correspond to the left and right.

Wherein each of the first torque regulator unit, the second torque regulator unit and the sub-brakes is provided for each of the two sets of the torque regulator unit and the sub-brakes.

One of the first torque regulating part is provided, the second torque regulating part is connected to both ends of the rear end of the first torque regulating part, and the auxiliary brakes are installed to correspond to the left and right parts of the rear end of the respective torque regulating part .

The number of auxiliary brakes to be operated can be changed according to the magnitude of the braking force required for braking or the braking distance when the auxiliary brake must be operated.

The braking force necessary for the braking of the escalator due to the speed increasing ratio of the torque regulating member can be reduced by the braking force required for braking the escalator when the over- So that the maximum braking force of the auxiliary brake is also reduced, thereby reducing the size.

In particular, since the present invention does not occupy the upper machine room space of the escalator by installing the auxiliary brake using the clearance space between the upper step and the lower step, it is possible to prevent safety accidents due to the provision of free space to maintenance personnel or inspectors using the upper machine room And an escalator auxiliary brake system capable of enhancing the utilization of the space inside the building or the escalator upper machine room.

In the meantime, since the required auxiliary brake braking force is reduced through the combination of the number of the torque regulating unit and the combination of the first and second torque regulating unit, the total size of the auxiliary braking system is reduced and space utilization is improved. Especially, since it is possible to miniaturize the size of the auxiliary brake system so that it can be installed in the idle space between the upper step and the lower step, it is possible to additionally mount it on the escalator which is installed and operated. .

Further, since the size and braking distance of the braking force can be controlled by adjusting the number of auxiliary brakes to be controlled according to the loads of the passengers by using the respective auxiliary brakes provided corresponding to the rear end of each torque adjuster fisherman, And it is possible to reduce the risk of passage of passengers due to sudden braking.

1 is a schematic diagram illustrating a conventional escalator control configuration;
2 is a perspective view illustrating a configuration of a main part of a conventional escalator.
3 is a perspective view illustrating a configuration of a main part of a conventional escalator.
4 is an exploded perspective view illustrating the configuration of a conventional auxiliary brake of an escalator.
5 is a schematic diagram illustrating the configuration of an escalator auxiliary brake system according to the first embodiment of the present invention.
6 is a schematic diagram illustrating the configuration of an escalator auxiliary brake system according to the first embodiment of the present invention;
7 is a schematic diagram illustrating a configuration of an escalator auxiliary brake system according to a second embodiment of the present invention;
8 is a schematic diagram illustrating a configuration of an escalator auxiliary brake system according to a second embodiment of the present invention;
9 is a schematic diagram illustrating the configuration of an escalator auxiliary brake system according to a third embodiment of the present invention;
10 is a schematic diagram illustrating a position where an escalator auxiliary brake system according to the present invention is installed;
11 is a flowchart illustrating a control process performed in an escalator auxiliary brake system according to the present invention.
12 is a flowchart illustrating a control process performed in an escalator auxiliary brake system according to the present invention.

Hereinafter, the structure of a preferred embodiment of the escalator auxiliary brake system according to the present invention will be described in detail with reference to the accompanying drawings.

5 and 6, the escalator auxiliary brake system according to the first embodiment of the present invention includes a motor driving unit 310 for driving and braking the driving motor 301, A torque regulator unit 360 (for example, a speed reducer or a speed reducer) that attenuates the braking torque by receiving a rotational moment of the front end connected to the step drive unit 350 to increase the rotational speed of the rear end, And an auxiliary brake 380 installed at a rear end of the torque regulator unit 360 to perform braking with respect to the step drive unit 350.

The motor drive unit 310 of the present embodiment includes a drive motor 301 for generating power, a speed reducer 320 for receiving the rotational force of the drive motor 301 as input, reducing the number of rotations and increasing the rotational moment, And a main brake 338 that performs braking of the driving motor 301 and a driving chain 328 that transmits the driving force of the driving sprocket 325 connected to the rear end of the driving motor 320 to the step driving unit 350.

The step drive unit 350 includes a terminal gear 352 that receives a drive force from the drive chain 328 and a stepping motor 352 that rotates integrally with the terminal gear 352 and moves the step chain 358 along a predetermined trajectory A step chain sprocket 351 on both sides for moving the step chain sprocket 351 and a step chain sprocket 351 connected to both sides of the step chain sprocket 351 for moving the step chain sprocket 351, A step 359 for moving the fixed locus along with the step chain 358 when the step chain 358 is rotated by the rotation of the step chain 358, Hour).

The torque regulator unit 360 of this embodiment receives a rotational moment of the front end connected to the step drive unit 350 to increase the rotational speed of the rear end, thereby reducing the torque required for braking by the auxiliary brake.

Therefore, at the time of braking by the auxiliary brake 380, the auxiliary brakes 380 are operated in a state in which the rotational moment is sharply reduced as compared with the step driver 350, so that natural braking is enabled, And the braking force required for rapid braking by the auxiliary brakes can be minimized.

A brake actuator unit 390 for transmitting the braking force for braking the step drive unit 350 to the step drive unit 350 is provided at the front end of the torque adjuster unit 360 of the present embodiment, The auxiliary brake 380 is connected.

The braking device portion 390 of the present embodiment includes a braking sprocket 391 formed on the outer periphery of the shaft 353 of the step drive portion 350 and a braking device 390 provided on the front end shaft of the torque adjusting device portion 360, And a braking chain 398 for connecting the braking sprocket 391 and the driven sprocket 393 to transmit the braking force to the shaft 353.

The braking device portion 390 of the present embodiment has the same number of teeth of the braking sprocket 391 as the driven sprocket 393 in order to reduce the size of the torque regulating portion 360 and to reduce the braking force required by the auxiliary brake 380. [ And the braking sprocket 391 can be designed to have a maximum number of teeth (i.e., a maximum radius) that can be extracted from the space A between the upper step and the lower step (FIG. 10).

The auxiliary brake 380 of the present embodiment includes an auxiliary brake drum 383 formed at a rear end of the torque regulator unit 360 and a braking unit 383 for selectively braking the auxiliary brake drum 383 And a solenoid device (not shown) for driving the auxiliary brake lever 382. The sub-

The drive force of the drive motor 301 is transmitted to the step drive unit 350 through the drive chain 308 so that the step chain sprocket 351 and the shaft 353 rotate and the step 359 moves, The braking sprocket 391 rotates integrally with the shaft 353, and the braking chain 398 moves by the rotation of the braking sprocket 391 to drive the driven sprocket 393. At this time, since the torque adjusting unit 360 receives the rotational moment of the driven sprocket 393 at the front end and the rear end is increased at a speed corresponding to the increasing rate of the torque adjusting unit 360, the auxiliary brake drum 383, (Idle) at an increased number of revolutions corresponding to the increasing rate of the regulator unit 360.

On the other hand, when there is a situation in which the escalator should be suddenly stopped due to breakage of the drive chain 328 or the like during the normal operation of the escalator, the solenoid device holding the auxiliary brake lever 382 is turned off and the auxiliary brake lever 382 The braking force of the auxiliary brake 380 is transmitted to the shaft 353 through the torque adjusting unit 360 and the braking unit 390 so that the braking force to the step driving unit 350 .

For example, during normal operation of the escalator, since the auxiliary brake lever 392 has opened the auxiliary brake drum 382 in the same manner as the main brake 338, it receives the rotational moment of the shaft 353 through the brake mechanical part 390, The drum 383 is idle.

When the escalator is normally stopped during normal operation, the main brake 338 is operated to perform braking on the drive motor 310. Since the auxiliary brake lever 382 is not released, the auxiliary brake drum 383 is idled The rotation of the motor 310 is stopped and the rotation of the stepping driver 350 is stopped gradually as the stepping motor 350 is stopped.

On the other hand, when the escalator travels in the direction opposite to the travel direction due to the breakage of the drive chain or some influence or an overspeed over a value that is higher than the nominal speed occurs, the braking by the auxiliary brake 380 is performed. (382) to release the escalator immediately. However, if the emergency stop is necessary except for the condition of the main brake 338 under the above conditions (that is, when the escalator travels in a direction opposite to the running direction due to breakage of the driving chain or by some influence, The auxiliary brake 380 may be configured to operate at a predetermined time difference from the operation timing of the main brake 338 as needed, because of the risk of a conduction accident caused by a sudden stop.

5, in an embodiment of the present invention, the torque regulator unit 360 and the auxiliary brake 380 are installed in a space A (see FIG. 9) formed between the upper part of the step and the lower part of the step, The two driver units 360 and the auxiliary brake 380 may be constructed so that two of them are provided so as to correspond to each other to share the braking force required for braking the step drive unit 350.

5, a pair of braking sprockets 391 are provided on the outer periphery of the shaft 353, and the respective braking chains 398, the driven sprockets 393, The torque regulator unit 360 may be provided and the corresponding auxiliary brake 380 may be provided at the rear end of each torque regulator unit 360 to share the braking force required for braking the step drive unit 350.

Although the braking device portion 390 including the braking sprocket 390, the braking chain 398 and the driven sprocket 393 is provided in correspondence with each torque adjusting device portion 360 in the above embodiment, Depending on the embodiment, only one set of braking sprocket 391, braking chain 398 and follower sprocket 393 may be installed, in which case the driven sprocket 393 is connected to the torque regulator unit 360 on both sides , The auxiliary brakes 380 on both sides share the braking force necessary for the sudden braking when the braking is in progress.

For example, assuming that the auxiliary brake 380 provided at the rear end of the torque control unit 360 shares the braking force 50% required for rapid braking, if the load on the passenger is less than 50%, the auxiliary brakes The braking operation can be performed more safely if the braking is performed by operating the auxiliary brake 380 at the rear end of the two torque adjusting mechanism units 360 on both sides when the load on the passenger is 50% or more .

The driving process and the braking process of the escalator performed in the first embodiment are as follows. For example, during normal operation, when the braking sprocket 391 rotates integrally with the shaft 353, the braking chain is moved by the rotation moment of the shaft 353 to rotate the driven sprocket 393, and the braking sprocket 391, The number of revolutions on the input side of the torque regulator unit 360 is increased by the ratio of the number of teeth of the sprocket 393.

The auxiliary brake drum 383 at the rear end of the torque regulating member 360 is rotated by the rotation of the front end of the torque regulating member 360, The number of revolutions is increased by an increased number of revolutions corresponding to the rate of increase of the number of revolutions per minute.

On the other hand, when performing the braking, when the auxiliary brake lever 382 is released from the solenoid device and catches the auxiliary brake drum 383, the auxiliary brake lever 382 is gradually released from the lining friction of the auxiliary brake drum 383, The braking force applied to the auxiliary brake drum 383 due to the action and the reaction is supported by the torque adjusting unit 360 and the supporting force corresponding to the increasing rate of the torque adjusting unit 360 (I.e., braking torque) is applied to the shaft 353 through the brake mechanical section 390. [

On the other hand, the shaft 353 gradually stops rotating due to the bearing force (i.e., braking torque) transmitted through the brake gear unit 390, and the step chain sprocket integrally connected therewith is stopped together with the shaft, .

More specifically, if the number of rotations of the shaft 353 is 2 rpm and the rate of increase of the braking sprocket 391 and the driven sprocket 393 is 2 in the case of performing rapid braking by the auxiliary brake 380, When the speed increasing ratio of the torque adjusting unit 360 is 100, the output of the torque adjusting unit 360 is 400 rpm, and the brake drum 383 is rotated at 400 rpm. Conversely, when braking by the auxiliary brake 380 is performed, the rotation moment of the brake drum 383 corresponds to 2/400, so that the braking of the step drive unit 350, that is, the shaft 353, do.

That is, the total auxiliary brake braking force = necessary braking force / ((number of driven sprocket teeth / number of braking sprocket teeth) × speed increasing ratio of the torque adjusting unit) is minimized so that the auxiliary brake braking force connected to the rear end of the torque adjusting unit 360 can be minimized, The size of the display unit 380 can be minimized. As the number of torque regulator parts constituting the auxiliary brake system is increased or the speed increasing ratio is increased, the required rotational moment applied to the rear end of the last torque regulating part during the braking process becomes very small, so that the escalator step driving part 350 can be controlled.

When the torque regulator and auxiliary brake are installed on both sides, the braking force or braking torque required for both side auxiliary brakes is (1 / 2). .

7 and 8, a pair of first torque regulator unit 361 and a first torque regulator unit 361, both of which are connected to the braking unit 390 at the front end, And an auxiliary brake 380 is provided at a rear end of each second torque regulating member unit 363. The second torque regulating member unit 363 is connected to the downstream end of the second torque regulating member unit 363,

In the second embodiment, the first torque regulating member 361 and the second torque regulating member 363 are increased in speed (increase in the number of revolutions) over two stages, and the rotation of the rear end of the second torque regulating member 363 The braking by the auxiliary brake 380 at the rear stage of the second torque regulator unit 363 can be performed more naturally, so that the risk of the passenger traveling accident can be prevented in advance, and the first torque regulator- The installation direction of the auxiliary brakes 361 and 363 and the auxiliary brakes 380 can also be changed. Therefore, the space utilization is high and the torque regulator can be miniaturized, so that the auxiliary braking system can be easily installed in a narrow space between the upper and lower steps 359.

The driving process and the braking process of the escalator performed in the second embodiment are as follows. For example, during normal operation, when the braking sprocket 391 rotates integrally with the shaft 353, the braking chain is moved by the rotation moment of the shaft 353 to rotate the driven sprocket 393, and the braking sprocket 391, The number of revolutions of the input side of the first torque regulator unit 361 increases due to the ratio of the number of teeth of the sprocket 393.

The output side of the first torque regulator unit 361 is connected to the input side of the second torque regulator unit 363 with the number of revolutions increased by the increasing rate of the first torque regulator unit 361, The auxiliary brake drum 383 at the rear stage of the second torque regulator unit 363 is in the state in which the speed ratio of the first torque regulator unit is increased by the speed ratio x of the second torque regulator unit 363, Torque adjuster fish speed increase ratio).

On the other hand, when performing the braking, when the auxiliary brake lever 382 is released from the solenoid device and catches the auxiliary brake drum 383, the auxiliary brake lever 382 is gradually released from the lining friction of the auxiliary brake drum 383, The braking force applied to the auxiliary brake drum 383 due to the action and the reaction is supported by the first and second torque adjuster fishes 361 and 363 so that the speed of the first torque adjuster fisherman The step chain sprocket which is integrally rotated with the shaft is also applied to the shaft 353 through the braking device portion 390 by the shaft (not shown in the figures) x (second torque regulator fish speed increasing ratio) The braking of the escalator step is performed.

More specifically, for example, in the case of performing rapid braking by the auxiliary brake 380, if the number of revolutions of the shaft 353 is 2 rpm and the speed increasing ratio of the braking sprocket 391 and the driven sprocket 393 is 2, The rotation speed of the front end of the regulating part 361 is 4 rpm and the output of the first torque regulating part 361 becomes 80 rpm when the speed increasing ratio of the first torque regulating part 361 is 20, If the speed ratio of the second torque regulator unit 363 is 10, the brake drum 383 at the rear end of the second torque regulator unit 363 is rotated at 800 rpm. Conversely, when braking by the auxiliary brake 380 is performed, the rotation moment of the brake drum 383 corresponds to 2/800, so that the braking of the step drive unit 350, that is, the shaft 353, do.

That is, the total auxiliary brake braking force = required braking force / ((number of driven sprocket teeth / number of braking sprocket teeth)) (the rate of increase of the first torque adjuster unit x the rate of increase of the second torque adjuster unit) The auxiliary brake braking force can be minimized and the size of the auxiliary brake 380 can be minimized. As the number of torque regulator parts constituting the auxiliary brake system is increased or the speed increasing ratio is increased, the required rotational moment applied to the rear end of the last torque regulating part during the braking process becomes very small, so that the escalator step driving part 350 can be controlled.

When the torque regulator and auxiliary brake are installed on both sides, the braking force or the braking torque required for both side auxiliary brakes is (1 / 2). .

In the escalator auxiliary brake system of the third embodiment of the present invention shown in Fig. 9, a torque regulator is provided in one brake unit, and auxiliary brakes are installed on both sides of the torque regulator to perform braking.

The front end of the torque regulating unit 360 of the present embodiment is provided with a braking unit 390 for transmitting the braking force for braking the step driving unit 350 to the step driving unit 350, Respectively, the auxiliary brake 380 is connected.

In other words, auxiliary brake drums are connected to the rear ends of the torque adjuster, respectively. In the case of normal operation, the torque adjusting unit receives the rotation moment of the front end to increase the rotation speed at a constant speed increase rate. (It is idle). If the sudden stop by the auxiliary brake is required, the solenoid power is turned off and the auxiliary brake lever is released and the auxiliary brake drum is caught, the braking force of the auxiliary brake is transmitted through the torque adjusting unit and the braking unit, As shown in FIG.

The third embodiment differs from the first embodiment in that the configuration in which the brake controller and the torque controller are respectively provided for each of the brake controller and the torque controller has the same degree of acceleration at the rear end of the torque controller, All of the first and second embodiments are applicable. However, in the third embodiment, since two auxiliary brakes are connected to one torque regulating member, the magnitude of the braking force required for each of the auxiliary brakes on both sides is reduced to 1/2, and the braking torque is decreased The matters described in the first embodiment (the case of one auxiliary brake and the case of two auxiliary brakes) are equally applicable.

On the other hand, also in the case of the third embodiment, it is possible that one of the first torque regulating element units is connected to the two second torque regulating element units, as in the second embodiment, so as to reduce the acceleration and braking torques over two stages, The same matters as those in the second embodiment can be applied to the reduction of the braking torque and the increase in the number of revolutions.

It is obvious that the scope of the present invention is not limited to the above embodiments but is defined by the matters defined in the claims of the present invention and encompasses various modifications and alterations made in the scope of claims.

301 ......... drive motor 310 ......... motor drive section
320 ......... Reduction gear 325 ......... Drive sprocket
328 ......... drive chain 338 ......... main brake
350 Step drive unit 351 Step chain sprocket
352 ......... terminal gear 353 ......... shaft
358 ......... step chain 359 ......... step
360 ......... Torque regulator unit 361 .......... First torque regulator unit
363 ......... Second torque regulator unit 380 .......... Secondary brake
382 ......... auxiliary brake lever 383 ......... auxiliary brake drum
390 .........braking unit fisher unit 391 .........braking sprocket
393 ......... Actuation sprocket 398 ......... Braking chain

Claims (11)

A motor drive unit including a drive motor and a main brake for performing braking of the drive motor; a terminal gear that receives the drive force of the motor drive unit by the drive chain; and a step chain that is coaxially installed with the terminal gear, The present invention relates to an auxiliary brake system for an escalator having an escalator having a step drive including a sprocket and a shaft rotatable integrally by connecting the step chain sprockets on both sides,
A torque regulator unit for receiving a rotational moment of a front end connected to the step drive unit and increasing a rotational speed of a rear end to reduce a braking torque;
An auxiliary brake including a brake drum installed at a rear end of the torque regulator and rotated by an increased number of revolutions and a brake lever for selectively braking the brake drum to brake the escalator, Brake system.
2. The braking system according to claim 1, wherein the escalator auxiliary brake system includes a braking unit for connecting the step-driving unit and the torque regulating unit,
A braking sprocket installed on the shaft;
A driven sprocket provided at a front end of the torque regulating member;
And a braking chain for connecting the braking sprocket and the driven sprocket.
The power steering apparatus according to claim 2, wherein each of the braking sprocket, the braking chain, the driven sprocket, the torque regulator, and the sub-brakes is provided in two, and the braking sprocket, the braking chain, the driven sprocket, And each set of auxiliary brakes is provided so as to correspond to the left and right.
The escalator auxiliary brake system according to claim 2, wherein each of the torque regulator unit and the sub-brakes is provided in two, and each of the torque regulator unit and each of the sub-brakes is installed to correspond to the left and right.
The escalator auxiliary brake system according to claim 2, wherein one of the torque regulator units is provided at the center, and the auxiliary brake is provided at both ends of the rear end of the torque regulator.
A motor drive unit including a drive motor and a main brake for performing braking of the drive motor; a terminal gear that receives the drive force of the motor drive unit by the drive chain; and a step chain that is coaxially installed with the terminal gear, The present invention relates to an auxiliary brake system for an escalator having an escalator having a step drive including a sprocket and a shaft rotatable integrally by connecting the step chain sprockets on both sides,
A first torque regulator unit that receives the rotational moment of the front end connected to the step drive unit and increases the rotational speed of the rear end first to reduce the braking torque;
A second torque regulator unit that receives the rotational moment of the front end connected to the rear end of the first torque regulator unit and increases the rotational speed of the rear end secondarily to reduce the braking torque;
A brake drum provided at a rear end of the second torque regulating part and rotated by an increased number of revolutions in first and second order, and an auxiliary brake including a brake lever selectively holding the brake drum to brake the escalator And an escalator auxiliary braking system.
7. The braking system according to claim 6, wherein the escalator auxiliary brake system includes a braking unit for connecting the step-driving unit and the first torque regulating unit,
A braking sprocket installed on the shaft;
A driven sprocket disposed at a front end of the first torque regulating member;
And a braking chain for connecting the braking sprocket and the driven sprocket.
7. The braking device according to claim 6, wherein the braking sprocket, the braking chain, the first torque regulator, the second torque regulator, and the sub-brakes are each provided for the braking sprocket, the braking chain, , Each of the second torque regulating member and each of the sub-brakes is provided so as to correspond to the left and right.
[Claim 7] The apparatus of claim 7, wherein each of the first torque regulator unit, the second torque regulator unit and the sub-brakes is provided in two, and each of the torque regulator unit and the sub- Escalator auxiliary brake system.
[7] The apparatus of claim 7, wherein one of the first torque regulator is provided, the second torque regulator is connected to both ends of the first torque regulator, and the sub- And the escalator auxiliary brake system is installed so as to correspond to the escalator auxiliary brake system.
The braking device according to any one of claims 3 to 10, wherein when the auxiliary brake needs to be operated, the number of auxiliary brakes to be operated can be changed according to the magnitude of the braking force required for braking or the braking distance. system.

Images