JP2019059557A - Passenger conveyor device - Google Patents

Abstract

To provide a passenger conveyor device capable of braking a footstep without engaging an engagement body with a rotating body at breakage of the driving chain.SOLUTION: The passenger conveyor device comprises: a plurality of footsteps which are connected to the endless footstep chain guided by the frame body installed on the upper and lower floors of a building structure, and moves in circulation; a driving sprocket 8 and a driven sprocket around which the footstep chain is wound; a driving device 4 to drive the driving sprocket via a driving chain 18; a main brake device 10 provided in the driving device; and a control device 14 to integrally control the passenger conveyor. The passenger conveyor device provides a sub braking device 11 which is in sliding contact with a rotating body (19) rotating integrally with the driving sprocket and brakes the rotation of the rotating body. Upon detection of the breakage of the driving chain, during the rising operation the braking device gives an operating instruction to the main braking device and gives an operating instruction to the sub braking device after the footstep is stopped, and during the lowering operation simultaneously gives an operating instruction to the main and sub braking devices, respectively.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a passenger conveyor device.

  An escalator, which is a form of a passenger conveyor device, includes a frame installed obliquely on the upper and lower floors of a building structure, and a plurality of steps connected to an endless step chain guided in the frame and circulated. A drive sprocket and a driven sprocket provided at the upper or lower part of the frame on 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 the drive sprocket The step chain and steps are circulated between the upper floor and the lower floor by rotational driving of the drive sprocket.

  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 to brake the movement of the steps by braking the rotation of the stage.

JP, 2010-18419, A

  However, in the case described in Patent Document 1, when the drive chain is broken, an engaging body such as a hook is engaged with the rotating body to be braked, so a sudden stop can not be obtained, and the passenger on the step There was a problem that the risk of falling was high.

  In addition, since a relatively large torque is applied, there is a possibility that the engaging body and the rotating body may be damaged, and there is a problem that recovery may take time if it is damaged.

  An object of the present invention is to provide a passenger conveyor device capable of braking a step without engagement of an engaging body and a rotating body at the time of cutting of a drive chain.

  In order to solve the above problems and achieve the above object, the present invention is connected to a frame installed obliquely on the upper and lower floors of a building structure and an endless step chain guided in the frame. A plurality of steps moving in circulation, a drive sprocket and a driven sprocket provided at an upper portion or a lower portion of the frame on which the step chain is wound, a drive device for driving the drive sprocket through the drive chain, and the drive device A passenger conveyor device including a main brake device provided in the vehicle and a control device for overall control of the passenger conveyor, the sub device braking the rotation of the rotating body in sliding contact with the rotating body integrally rotating with the drive sprocket A brake device is provided, and the control device outputs an operation command to the main brake device during rising operation when detecting disconnection of the drive chain, and after the step stops, the sub-brake device It outputs an operation command to, during lowering operation, characterized by simultaneously outputting an operation command to each of the main brake device and the auxiliary brake device.

  According to the passenger conveyor device of the above configuration, when cutting the drive chain, it is possible to brake the steps without depending on the engagement between the engaging body and the rotating body.

  In addition, the subject except having mentioned above, a structure, and an effect are clarified by description of the following embodiment.

FIG. 1 is a side view showing a passenger conveyor device of Example 1; BRIEF DESCRIPTION OF THE DRAWINGS The principal part block diagram of the passenger-conveyor apparatus of Example 1. FIG. 10 is a flowchart showing a control procedure when the drive chain is disconnected during the upward operation. 10 is a flowchart showing a control procedure when the drive chain is disconnected during the descent operation.

  Hereinafter, an embodiment for carrying out the passenger conveyor device of the present invention will be described with reference to the drawings.

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

  Escalator 1, which is one form of the passenger conveyor device, is installed in a building structure and is guided by frame 2 including upper horizontal frame 2A, lower horizontal frame 2B and middle inclined portion frame 2C, and guided inside frame 2 A plurality of steps 3 cyclically moving between floors, a drive 4 installed in the upper horizontal frame 2A and driving the steps 3, and a pair of left and right balustrades 5 erected on the frame 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 to the left and right pair of endless step chains 7 on both sides in the width direction, and these left and right step chains 7 are drive sprockets 8 supported in the upper horizontal frame 2A and the lower horizontal frame 2B. It is wound around a driven sprocket 9 axially supported therein. The drive unit 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 schematic view of the passenger conveyor device according to the present embodiment. As shown here, the escalator 1 includes the drive device 4 described above, 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.

  Drive device 4 includes a motor 15, a reduction gear 16 for reducing the rotation of motor 15, a power transmission sprocket 17 provided on an output shaft of reduction gear 16, and a drive for transmitting the power of power transmission sprocket 17 to drive sprocket 8. And a chain 18 is provided.

  The main electromagnetic brake device 10 is provided in the drive device 4 and supported so as to be movable only in the motor axial direction with respect to the brake disc rotating with the motor shaft, the housing fixed to the motor base, and the housing, for example An armature, an urging spring for pushing the armature against the brake disc, an electromagnet fixed to the housing and resisting the urging spring to separate the armature from the brake disc, or any one of the two disposed between the brake disc and the armature It consists of a brake lining etc. fixed to one side.

  Such a main electromagnetic brake device 10 generates a braking force when the motor is stopped. In order 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 friction between the brake disc and the motor causes the brake disc and the motor shaft to be held in position with respect to the housing.

  On the other hand, when the motor rotates, the braking of the electromagnetic brake is released. To release the brake, a current of a predetermined magnitude is supplied to the electromagnet. The armature is attracted by the magnetic force generated from the electromagnet by this current. Since the load to be drawn is set larger than the load by which the push spring pushes the armature toward the brake disc, the brake lining is separated, no frictional force is generated, and the brake disc and the motor shaft can be rotated.

  The sub electromagnetic brake device 11 is provided on the drive sprocket 8 and can be moved, for example, only in the motor axial direction with respect to the brake disc 19 rotating with the drive sprocket shaft, the housing fixed to the drive sprocket pedestal, and the housing. An armature supported, an urging spring for urging the armature against the brake disc 19, an electromagnet for securing the armature to the brake disc 19 while being fixed to the housing and resisting the pressure spring, disposed between the brake disc 19 and the armature It is comprised from the brake lining etc. which are fixed and fixed to either one of both.

  Such an auxiliary electromagnetic brake device 11 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 current to the electromagnet is cut off. At this time, since the push spring presses the armature toward the brake disc 19, the friction disc with the brake lining holds the brake disc 19 and the motor shaft in position with respect to the housing.

On the other hand, when the drive sprocket 8 rotates, the braking of the electromagnetic brake is released. To release the brake, a current of a predetermined magnitude is supplied to the electromagnet. The armature is attracted by the magnetic force generated from the electromagnet by this current. Since the load to be sucked is set larger than the load by which the push spring pushes 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 become rotatable. . The sub electromagnetic brake device 11 is preset to a braking force (e.g., a deceleration of 0.6 m / s ² ) or less which does not cause sudden braking when the brake lining is in sliding contact with the brake disc 19.

  The inverter 12 variably controls the motor 15 at an arbitrary speed based on a command output from the controller 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 generally 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 disconnected will be described.

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

  When the drive chain 18 is disconnected for some reason while the escalator 1 is in the rising operation, the inverter 12 detects a rapid torque fluctuation, and based on this, the controller 14 detects the disconnection of the drive chain 18 (S1 YES). Next, the control device 14 shuts 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 current to the electromagnet is cut off, the armature is pressed against the brake disc by the pressing force of the pressure spring, and the brake lining is brought into sliding contact with the brake disc for braking. At this time, the sub electromagnetic brake device 11 is in the non-braking state.

  When the step 3 rising by the braking of the main electromagnetic brake device 10 decelerates and the moving handrail safety device 13 detects the stop of the moving handrail 6 (YES in S5), the moving handrail safety device 13 sends a handrail stop signal to the control device 14 Output. In response to this, the control device 14 determines that the moving handrail 6 and the steps 3 interlocking with the moving handrail 6 have stopped, and outputs an operation command to the sub electromagnetic brake device 11 (S6). The brake 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.

  As described above, when the escalator 1 is in the ascending operation, even if the drive chain 18 is disconnected, the steps 3 are elevated and decelerated by the traveling inertia force, so first braking is performed by the main electromagnetic brake device 10 and relatively gentle. The steps 3 are braked by deceleration, and after the steps 3 are stopped, the auxiliary electromagnetic brake device 11 is braked to reliably prevent the steps 3 from being lowered.

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

  When the drive chain 18 is disconnected for some reason while the escalator 1 is in a descent operation, the inverter 12 detects a rapid torque fluctuation, and based on this, the controller 14 detects the disconnection of the drive chain 18 (S11) YES). Next, the control device 14 shuts off the power supply of the motor 15 (S12) and outputs an operation command to each of the main electromagnetic brake device 10 and the sub electromagnetic brake 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 push spring, and makes the brake linings slide against the brake disc for braking Do.

  Thus, if the drive chain 18 is disconnected when the escalator 1 is in the descent operation, there is a possibility that the steps 3 may descend rapidly due to the own weight, the load, and the traveling inertia force. Therefore, the main electromagnetic brake device 10 and the sub electromagnetic brake device The respective steps 11 are braked to brake the steps 3. On the other hand, since the braking force of the auxiliary electromagnetic brake device 11 is also preset to a value that does not cause sudden braking at this time, emergency braking of the step 3 is performed while reducing the risk of the passenger on the step 3 falling. Can.

  According to the present embodiment, there is provided the sub electromagnetic brake device 11 which is in sliding contact with the rotating body integrally rotating with the drive sprocket 8, that is, the brake disc 19 to brake the rotation of the brake disc 19. When the disconnection of 18 is detected, an operation command is outputted to the main electromagnetic brake device 10 in the rising operation, and an operation command is outputted to the sub electromagnetic brake device 11 after the step 3 is stopped, and in the descent operation, the main electromagnetic By simultaneously outputting the operation command to each of the brake device 10 and the sub electromagnetic brake device 11, it is possible to brake the step 3 without the engagement of the engaging body and the rotating body when the drive chain 18 is disconnected. While realizing a relatively gentle emergency braking and reducing the risk of the passenger on the step 3 falling, it is possible to make the equipment not be damaged at the time of the emergency braking. That.

  That is, when the escalator 1 is in the rising operation, even if the drive chain 18 is disconnected, the steps 3 rise and decelerate by the running inertia force, so first braking is performed by the main electromagnetic brake device 10 to relatively slow deceleration The step 3 is braked at this time, and after the step 3 is stopped, the auxiliary electromagnetic brake device 11 is braked to reliably prevent the step 3 from being lowered.

  In addition, if the drive chain 18 is disconnected when the escalator 1 is in the descent operation, the steps 3 may be rapidly lowered due to the own weight, the load, and the running inertia force. Therefore, in the main electromagnetic brake device 10 and the sub electromagnetic brake device 11 Each of them is braked to brake the steps 3. Also in this case, the braking force of the sub electromagnetic brake device 11 is set in advance so that sudden braking does not occur. The step 3 can be emergencyly braked while reducing the speed. Thus, the escalator 1 with high safety and durability can be obtained by using the electromagnetic brake as the auxiliary brake operated at the time of cutting the drive chain 18.

  Next, a second embodiment of the present invention will be described. In the first embodiment, the auxiliary electromagnetic brake device 11 is used for the auxiliary brake, whereas in the present embodiment, a hydraulic brake device is used for the auxiliary brake. The other configuration is the same as that of the first embodiment, and thus the redundant description of the common points is omitted below.

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

  On the other hand, in the case of using the hydraulic brake device 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 the step A control signal may be applied from the controller 14 to the sub-brake such that the braking force is approximately inversely proportional to the speed. As a result, in the present embodiment, an appropriate braking force corresponding to the speed of the step can be generated, and the step can be stopped more smoothly. Therefore, it is possible to simultaneously prevent the fall of the passenger and shorten the braking time. Can.

  In the above, the Example of the passenger conveyor apparatus of this invention was described also including the effect. However, the passenger conveyor device of the present invention is not limited to the above-described embodiment, and various modifications are possible 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 slope part frame 3 Step 4 Drive 5 Barrel 6 Moving handrail 7 Step chain 8 Step sprocket 8 Drive sprocket 9 Main electromagnetic brake device 11 Sub electromagnetic brake device 12 Inverter 13 Moving handrail safety device 14 Control device 15 Motor 16 Reduction gear 17 Power transmission sprocket 18 Drive chain 19 Brake disc

Claims (5)

A frame installed on upper and lower floors of a building structure, a plurality of steps connected to an endless step chain guided in the frame and circulated, and the frame on which the step chain is wound A drive sprocket and a driven sprocket provided at the upper or lower part of the drive, a drive device for driving the drive sprocket through a drive chain, a main brake device provided for the drive device, and a control device for controlling the passenger conveyor A passenger conveyor device comprising:
An auxiliary brake device is provided which is in sliding contact with the rotating body integrally rotating with the drive sprocket to brake the rotation of the rotating body.
When the controller detects the breakage of the drive chain,
At the time of ascending operation, an operation command is output to the main brake device, and after the steps are stopped, an operation command is output to the auxiliary brake device.
A passenger conveyor device characterized by simultaneously outputting an operation command to each of the main brake device and the auxiliary brake device during descent operation.   The passenger conveyor device according to claim 1, wherein the auxiliary brake device is an electromagnetic brake device and is preset to a braking force that does not cause sudden braking. The passenger conveyor device according to claim 1, wherein the auxiliary brake device is an electromagnetic brake device, and the deceleration is preset to a braking force of 0.6 m / s ² or less. The auxiliary brake device is a hydraulic brake device,
2. The hydraulic control apparatus according to claim 1, wherein the control device controls the hydraulic brake device so as to obtain a braking force corresponding to the speed of the steps or a gradually rising braking force. 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 torque fluctuation of the inverter device.

Images