JP6751380B2 - Passenger conveyor equipment - Google Patents

Description

The present invention relates to a passenger conveyor device.

An escalator, which is one form of a passenger conveyor device, includes a frame body that is installed on the upper and lower floors of a building structure in an inclined manner, and a plurality of steps that are cyclically connected to an endless step chain that is guided inside the frame body. A driving sprocket and a driven sprocket provided on an upper part or a lower part of a frame around which the step chain is wound, and a drive device for driving the drive sprocket through the drive chain, and the driving force from the drive device is a drive sprocket. When the drive sprocket is rotationally driven, the step chain and the step move in a circulating manner between the upper floor side and the lower floor side.

In such an escalator, in FIGS. 2 and 5 of Patent Document 1, when the drive chain is broken, an engaging body such as a hook is engaged with a rotating body that rotates integrally with the driving sprocket, and this rotating body It is disclosed that the movement of the step is braked by braking the rotation of the.

JP, 2010-18419, A

However, in the one described in Patent Document 1, when the drive chain is broken, the engaging body such as a hook is engaged with the rotating body to perform braking, so that there is no choice but to make a sudden stop, and passengers on the step There was a problem that there was a high risk of falling.

Further, since a relatively large torque is applied, the engaging body and the rotating body may be damaged, and in the event of damage, it takes a long time to recover.

It is an object of the present invention to provide a passenger conveyor device capable of braking a step when the drive chain is cut without depending on the engagement between the engaging body and the rotating body.

In order to solve the above-mentioned problems and achieve the above-mentioned object, the present invention is connected to a frame body installed at an upper and lower floors of a building structure, and an endless step chain guided in the frame body. A plurality of steps that circulate and move, a drive sprocket and a driven sprocket provided on the upper or lower part of the frame around which the step chain is wound, a drive device that drives the drive sprocket via a drive chain, and the drive device. An endless moving handrail guided along the periphery of the balustrade and driven in synchronization with the steps, and a moving handrail safety device that detects the movement of the moving handrail and outputs a detection signal. A passenger conveyor device including a control device for controlling the passenger conveyor in a unified manner, wherein a sub-brake device for slidingly contacting a rotating body that rotates integrally with the drive sprocket to brake the rotation of the rotating body is provided, The device outputs an operation command to the main braking device when the driving chain is broken and during the ascending operation, and interlocks with the moving handrail and the moving handrail based on a detection signal of the moving handrail safety device. after determining that the footstep is stopped, the outputs an operation command to the auxiliary brake device, upon lowering operation, characterized in that simultaneously outputs an operation command to each of the main brake device and the auxiliary brake device ..

According to the passenger conveyor device having the above structure, when the drive chain is cut, the steps can be braked without the engagement between the engaging body and the rotating body.

The problems, configurations, and effects other than those described above will be clarified by the following description of the embodiments.

The side view which shows the passenger conveyor apparatus of Example 1. 1 is a configuration diagram of a main part of a passenger conveyor device according to a first embodiment. The flowchart which shows the control procedure when a drive chain cut|disconnects during ascent operation. The flowchart which shows the control procedure when a drive chain cut|disconnects during descent|fall operation.

Embodiments for carrying out the passenger conveyor device of the present invention will be described below with reference to the drawings.

FIG. 1 is a side view showing an embodiment of the passenger conveyor device according to the present embodiment.

An escalator 1, which is one form of a passenger conveyor device, is installed in a building structure and includes a frame body 2 including an upper horizontal frame 2A, a lower horizontal frame 2B, and an intermediate inclined portion frame 2C, and is vertically guided by being guided into the frame body 2. A plurality of steps 3 circulatingly moving between floors, a drive device 4 installed on the upper horizontal frame 2A for driving the steps 3, and a pair of left and right balustrades 5 standing upright on the frame body 2 along the moving direction of the steps 3. And an endless moving handrail 6 which is guided along the periphery of the balustrade 5 and driven in synchronization with the steps 3.

The steps 3 are connected on both sides in the width direction to a pair of left and right endless step chains 7, and these left and right step chains 7 are a drive sprocket 8 and a lower horizontal frame 2B pivotally supported in an upper horizontal frame 2A. It is wound around a driven sprocket 9 which is axially supported inside. The drive device 4 and the drive sprocket 8 may be provided in the lower horizontal frame 2B, and the driven sprocket 9 may be provided in the upper horizontal frame 2A.

FIG. 2 is a main part configuration diagram of the passenger conveyor device according to the present embodiment. As shown here, the escalator 1 includes the above-described drive device 4, the main electromagnetic brake device 10, the sub electromagnetic brake device 11, the inverter 12, the moving handrail safety device 13, and the control device 14. There is.

The drive device 4 drives the motor 15, a speed reducer 16 that reduces the rotation of the motor 15, a power transmission sprocket 17 provided on the output shaft of the speed reducer 16, and a power transmission from the power transmission sprocket 17 to the drive sprocket 8. And a chain 18.

The main electromagnetic brake device 10 is provided in the drive device 4 and is supported by, for example, a brake disk that rotates together with the motor shaft, a housing fixed to the motor pedestal, and a housing that is movable with respect to the housing only in the motor axial direction. An armature, a push spring that pushes the armature toward the brake disc, an electromagnet that is fixed to the housing and separates the armature from the brake disc by resisting the push spring, and is located between the brake disc and the armature It consists of a brake lining fixed to one side.

Such a main electromagnetic brake device 10 generates a braking force when the motor is stopped. To generate the braking force, the current to the electromagnet is cut off. At this time, since the push spring presses the armature toward the brake disc, the brake disc and the motor shaft are held in position with respect to the housing by the frictional force with the brake lining.

On the other hand, when the motor is rotating, the braking of the electromagnetic brake is released. To release the braking, a predetermined amount of current is passed through the electromagnet. The amateur is attracted by the magnetic force generated from the electromagnet by this current. Since the load to be attracted is set to be larger than the load that the push spring pushes the armature toward the brake disc, the brake lining is separated, the frictional force is not generated, and the brake disc and the motor shaft can rotate.

The sub electromagnetic brake device 11 is provided on the drive sprocket 8, and is, for example, a brake disk 19 that rotates together with the drive sprocket shaft, a housing fixed to the drive sprocket pedestal, and movable only in the motor axial direction with respect to the housing. An armature being supported, a push spring for pushing the armature towards the brake disc 19, an electromagnet fixed to the housing and separating the armature from the brake disc 19 and arranged between the brake disc 19 and the armature The brake lining is fixed to either one of the two.

The sub electromagnetic brake device 11 as described above generates a braking force when the drive chain 18 is disconnected. In order to generate a braking force using the sub electromagnetic brake device 11, the electric current to the electromagnet is cut off. At this time, since the push spring presses the armature toward the brake disc 19, the brake disc 19 and the motor shaft are held in position with respect to the housing by the frictional force with the brake lining.

On the other hand, the braking of the electromagnetic brake is released when the drive sprocket makes eight revolutions. To release the braking, a predetermined amount of current is passed through the electromagnet. The amateur is attracted by the magnetic force generated from the electromagnet by this current. Since the load to be attracted is set to be larger than the load for the push spring to push the armature toward the brake disc 19, the brake lining is separated, the frictional force is not generated, and the brake disc 19 and the drive sprocket 8 are rotatable. .. The sub electromagnetic brake device 11 is preset to have a braking force (for example, deceleration of 0.6 m/s ² ) or less that does not cause sudden braking when the brake lining slides on the brake disc 19.

The inverter 12 controls the motor 15 at a variable speed based on a command output from the control device 14.

The moving handrail safety device 13 detects the movement of the moving handrail 6 and outputs a detection signal to the control device 14.

The control device 14 integrally controls the escalator 1, and outputs various commands to the main electromagnetic brake device 10, the sub electromagnetic brake device 11, the inverter 12, and the like.

Here, a flow of braking the step 3 when the drive chain 18 is cut will be described.

FIG. 3 is a flowchart showing a control procedure when the drive chain 18 is disconnected during the ascending operation of the escalator 1.

If the drive chain 18 is disconnected due to some cause while the escalator 1 is in the ascending operation, the inverter 12 detects a rapid torque fluctuation, and the controller 14 detects the disconnection of the drive chain 18 based on this (S1). Then YES). Next, the control device 14 cuts off the power supply of the motor 15 (S2) and outputs an operation command to the main electromagnetic brake device 10 (S3). In response to this, the main electromagnetic brake device 10 performs a braking operation (S4). That is, the electric current to the electromagnet is cut off, the armature is pressed toward the brake disc by the pressing force of the pressing spring, and the brake lining is brought into sliding contact with the brake disc for braking. At this point, the sub electromagnetic brake device 11 is in the non-braking state.

When the moving handrail safety device 13 detects that the moving handrail safety device 13 has stopped (YES in S5), the moving handrail safety device 13 sends a handrail stop signal to the control device 14 when the step 3 that is raised by the braking of the main electromagnetic brake device 10 is decelerated. Output. In response to this, the control device 14 determines that the moving handrail 6 and the step 3 interlocking with the moving handrail 6 have stopped, and outputs an operation command to the sub electromagnetic brake device 11 (S6). The braking device 11 performs a braking operation (S7). That is, the current to the electromagnet is cut off, the armature is pressed against the brake disc 19 by the pressing force of the pressing spring, and the brake lining is brought into sliding contact with the brake disc 19 for braking.

In this way, when the escalator 1 is in the ascending operation, even if the drive chain 18 is disconnected, the step 3 rises and decelerates due to the traveling inertial force. The step 3 is braked at a deceleration, and after the step 3 is stopped, the auxiliary electromagnetic brake device 11 brakes the step 3 to reliably prevent the step 3 from descending.

On the other hand, FIG. 4 is a flowchart showing a control procedure when the drive chain 18 is disconnected during the descending operation of the escalator 1.

If the drive chain 18 is disconnected due to some cause while the escalator 1 is in the descending operation, the inverter 12 detects a rapid torque fluctuation, and the control device 14 detects the disconnection of the drive chain 18 based on this (S11). Then YES). Next, the control device 14 shuts off the power of the motor 15 (S12) and outputs an operation command to each of the main electromagnetic braking device 10 and the sub electromagnetic braking device 11 (S13). In response to this, the main electromagnetic brake device 10 and the sub electromagnetic brake device 11 perform the braking operation (S14). That is, each of the main electromagnetic brake device 10 and the sub electromagnetic brake device 11 cuts off the current to the electromagnet, presses the armature toward the brake disc by the pressing force of the pressing spring, and slides the brake lining onto the brake disc for braking. To do.

As described above, if the drive chain 18 is cut while the escalator 1 is in the descending operation, the steps 3 may be rapidly lowered due to its own weight, the load, and the traveling inertial force. Therefore, the main electromagnetic brake device 10 and the sub electromagnetic brake device Each of 11 is braked to brake the step 3. On the other hand, at this time as well, the braking force of the sub electromagnetic brake device 11 is preset to a value that does not result in sudden braking, so that it is possible to perform emergency braking of the step 3 while reducing the risk of the passengers on the step 3 falling. You can

According to the present embodiment, the rotating body that rotates integrally with the drive sprocket 8, that is, the auxiliary electromagnetic brake device 11 that slidably contacts the brake disc 19 and brakes the rotation of the brake disc 19, is provided. When the disconnection of 18 is detected, the operation command is output to the main electromagnetic braking device 10 during the ascending operation, the operation command is output to the sub electromagnetic braking device 11 after the step 3 is stopped, and the main electromagnetic braking device is provided during the descending operation. By simultaneously outputting the operation command to each of the brake device 10 and the sub electromagnetic brake device 11, when the drive chain 18 is disconnected, the step 3 can be braked without the engagement of the engaging body and the rotating body. It is possible to realize a relatively gentle emergency braking, reduce the risk of the passengers on the steps 3 falling, and have a structure in which the device is not damaged during the emergency braking.

That is, when the escalator 1 is in the ascending operation, even if the drive chain 18 is disconnected, the step 3 is elevated by the traveling inertia force and decelerates. Therefore, the main electromagnetic brake device 10 is first braked, and the relatively slow deceleration is performed. The step 3 is braked by, and after the step 3 is stopped, the auxiliary electromagnetic brake device 11 brakes the step 3 to reliably prevent the step 3 from descending.

Further, if the drive chain 18 is cut while the escalator 1 is in the descending operation, the steps 3 may be rapidly lowered due to its own weight, loading load and traveling inertial force. Therefore, the main electromagnetic brake device 10 and the sub electromagnetic brake device 11 may be Although the steps 3 are braked by braking each of them, the braking force of the sub electromagnetic braking device 11 is set to a value that does not result in sudden braking at this time as well, so that the passengers on the steps 3 may fall down. It is possible to apply emergency braking to the steps 3 while reducing the number of steps. In this way, the escalator 1 having high safety and durability can be obtained by using the electromagnetic brake as the auxiliary brake that is operated when the drive chain 18 is disconnected.

Next, a second embodiment of the present invention will be described. In the first embodiment, the sub electromagnetic brake device 11 is used as the sub brake, whereas in the present embodiment, the hydraulic brake device is used as the sub brake. Since the other configurations are common to those of the first embodiment, redundant description of common points is omitted below.

When the electromagnetic brake device is used as in the first embodiment, the control device 14 cannot adjust the braking force of the brake, and can only switch the brake on/off. Therefore, in order to prevent the passengers from falling due to sudden braking when the brakes are applied, it is necessary to set the braking force of the auxiliary brake to a small value (for example, deceleration=0.6 m/s ² or less) in advance. there were.

On the other hand, when the hydraulic brake device is used as in the present embodiment, the braking force of the auxiliary brake can be finely adjusted. For example, a control signal for gradually increasing the braking force or a step It is also possible to give a control signal from the control device 14 to the sub-brake so that a braking force that is substantially inversely proportional to the speed is obtained. As a result, in the present embodiment, it is possible to generate an appropriate braking force according to the speed of the step and stop the step more smoothly, so that it is possible to prevent the passenger from falling and to shorten the braking time at the same time. You can

The embodiments of the passenger conveyor device according to the present invention have been described above, including the effects thereof. However, the passenger conveyor device of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention described in the claims.

DESCRIPTION OF SYMBOLS 1 escalator 2 frame 2A upper horizontal frame 2B lower horizontal frame 2C middle inclined frame 3 step 4 driving device 5 balustrade 6 moving handrail 7 step chain 8 driving sprocket 9 driven sprocket 10 main electromagnetic braking device 11 sub electromagnetic braking device 12 inverter 13 Safety device for moving handrails 14 Control device 15 Motor 16 Reducer 17 Power transmission sprocket 18 Drive chain 19 Brake disc

Claims (5)

A frame body that is installed on the upper and lower floors of a building structure in an inclined manner, a plurality of steps connected to an endless step chain guided in the frame and circulatingly moved, and the frame body around which the step chain is wound. Drive sprocket and driven sprocket provided in the upper or lower part of the, the drive device for driving the drive sprocket via the drive chain, the main brake device provided in the drive device, and guided to the periphery of the balustrade, the step. A passenger conveyor device including an endless moving handrail that is driven in synchronization, a moving handrail safety device that detects the movement of the moving handrail and outputs a detection signal, and a control device that integrally controls the passenger conveyor. hand,
A sub-brake device is provided that slidably contacts a rotating body that rotates integrally with the drive sprocket and brakes the rotation of the rotating body.
When the controller detects a break in the drive chain,
Ascent operation outputs an operation command to the main brake device, after the footstep in conjunction with the moving handrail and the handrail on the basis of a detection signal of the moving handrail safety device is judged to have stopped, the auxiliary brake While outputting the operation command to the device,
A passenger conveyer device characterized by simultaneously outputting an operation command to each of the main braking device and the sub braking device during a descent operation. The passenger conveyor device according to claim 1, wherein the sub-brake device is an electromagnetic brake device, and is preset to a braking force that does not result in sudden braking. The passenger conveyor device according to claim 1, wherein the sub-brake device is an electromagnetic brake device, and a deceleration is preset to a braking force of 0.6 m/s2 or less. The sub-brake device is a hydraulic brake device,
The control device controls the hydraulic brake device so that a braking force according to the speed of the step or a gradually increasing braking force is obtained. Passenger conveyor equipment. The passenger conveyor device according to claim 1, further comprising: an inverter device that performs variable speed control of the drive device, wherein the control device detects disconnection of the step chain based on a torque fluctuation of the inverter device.

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