JPH0859161A - Inclined type passenger conveyor device - Google Patents

Abstract

PURPOSE: To provide an inclined type passenger conveyor device capable of stopping and holding a footstep in the stopped condition with a compact device, and easily applicable to an existing product with simple constitution. CONSTITUTION: In an inclined type passenger conveyor device where a plurality of footsteps 3 connected to a footstep chain 2 and turned thereby and a driving machine 8 to stretch the footstep chain 2 to a sprocket 4 and drive it are arranged in a main frame provided between floors which are vertically distant in an inclined manner, and a braking device to provide the braking force to a rotary shaft of the driving machine 8 is provide, a means 18 to restrict a rotating part of the driving machine 8 by the engagement.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inclined passenger conveyor device such as an escalator or an electric road installed obliquely between floors which are separated from each other vertically, and in particular, ensures that the tread plate is fixed while stopped. The present invention relates to an inclined passenger conveyor device.

[0002]

2. Description of the Related Art Conventionally, an inclined passenger conveyor device such as an escalator rotates a drive sprocket through a speed reducer by an electric motor, and rotates a tread plate chain wound around the drive sprocket and a driven sprocket paired with the drive sprocket. , A plurality of treads connected to the tread chain are moved.

When the vehicle is stopped, the braking device provided in the drive device is operated to stop and hold the tread.

Furthermore, when the passengers get in and a load is applied when the braking device loses its function due to a failure or other reasons when the tread is stopped, the tread may descend, which is prevented. For this reason, there is an escalator that locks the drive sprocket when stopped (Japanese Patent Laid-Open No. 59-97985).

[0005]

In the above prior art, the structure itself directly locks a large-diameter drive sprocket, so the size of the apparatus itself becomes large, and further, a space for arranging these special locking mechanisms around the drive sprocket. However, there is a problem of increasing the size of the escalator when applied to an actual machine.

An object of the present invention is to provide a slant type passenger conveyor device in which a tread plate can be stopped and held when stopped by a small device.

Another object of the present invention is to provide an inclined passenger conveyor device which has a simple structure and can be easily applied to already delivered products.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a plurality of pivoting gears connected to a tread chain in a main frame installed at an angle between floors separated vertically. In an inclined passenger conveyor device including a tread and a drive device for driving the tread chain by winding the tread chain on a sprocket, a rotation of the drive device is provided. The means for restraining the portion by engagement is provided.

[0009]

According to the above construction, since the restraint means by engagement is provided on the small-diameter rotating portion on the side of the drive machine, which is separated from the sprocket around which the tread chain is wound, the rotational force acting on the restraint means is reduced. As a result, it is possible to stop and hold the tread with a small device. Further, since there is a relatively large space around the driving machine, it can be easily applied to delivery.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the inclined passenger conveyor device according to the present invention will be described below with reference to FIGS. The inclined passenger conveyor device shown here is an escalator, and is endlessly connected by a tread chain 2 in a main frame 1 installed obliquely between an upper floor UF and a lower floor LF that are vertically separated. The plurality of treads 3 are guided to rotate. The guide of the treads 3 is performed by a guide rail (not shown) supported by the main frame 1.

The tread chain 2 is driven by being wound around a drive sprocket 4 and a driven sprocket 5 which are axially supported in the upper machine chamber 1A and the lower machine chamber 1B formed at both ends of the main frame 1. .

The drive sprocket 4 has a driven sprocket 6 coaxially fixed thereto, and a drive chain 7 is wound around the driven sprocket 6 to transmit the rotational force of a drive machine 8.

The driving machine 8 is provided with a braking device 9 that generates a braking force by a spring force such as an electromagnetic disc brake that applies a braking force to a rotating shaft, and releases the braking force by an electromagnetic force supplied to a coil. There is.

Further, balustrade panels 10 are erected on both sides of the endless tread plate 3 along the direction of rotation thereof, and a movable handrail 11 which is driven in synchronization with the tread plate 3 is provided on the peripheral edge thereof.
Is supported.

Then, the upper machine room 1A and the lower machine room 1B
Are closed by landing floors 12A and 12B, respectively.

On the other hand, the drive unit 8 is composed of an electric motor 13 and a speed reducer 14. A rotary shaft 16 of the electric motor 13 is connected to an input shaft of the speed reducer 14, and a sprocket 15 is attached to an output shaft of the speed reducer 14. The drive chain 7 is provided and wound around the drive chain 7. The braking device 9 is attached to the input shaft of the speed reducer 14.
Is provided.

The speed reducer 14 is a so-called parallel shaft gear speed reducer in which an input shaft and an output shaft are arranged in parallel, and a helical gear is used.

Although the above-described structure is a standard escalator structure, the feature of this embodiment is that a means for restraining the rotating portion of the drive unit 8 by engagement with the fixed portion is provided. That is, the ratchet wheel 17 is attached to the rotary shaft 16 of the electric motor 13.
Is provided, and the latch 18 is attached to the fixing member facing the ratchet wheel 17.
By providing a restraint means by engaging the two while the tread plate 3 of the escalator is stopped, even if the braking device 9 becomes inoperable, the tread plate 3 can be stopped and held. I did it.

The claw wheel 17 has a large number of claw portions 17C formed on its outer peripheral portion. The ratchet wheel 17 is the electric motor 1
By forming a large number of claw portions 17C on the outer periphery of the coupling that connects the rotary shaft 16 of No. 3 and the input shaft of the speed reducer 14, it is not necessary to newly install a dedicated ratchet wheel, and the newly installed ratchet wheel is newly provided. There is no need to secure a space for installation.

However, when the rotary shaft 16 of the electric motor 13 and the input shaft of the speed reducer 14 are integral shafts and it is not necessary to use a coupling, a dedicated ratchet wheel must be installed. Is the electric motor 13 and the speed reducer 14.
Since it is only necessary to slightly increase the distance between the two and the length of the integral shaft, in this case as well, it is not necessary to secure a large installation space for newly installing the ratchet wheel.

The latch 18 is formed in a substantially L-shape, and one end of the L-shape has a claw portion 17C of the ratchet wheel 17.
An engaging portion 19 for engaging with is formed, and the L-shaped bent portion is rotatably supported by the box of the speed reducer 14 by a support shaft 20.

The other end of the L-shape of the latch 18 is connected to an electromagnetic drive device 21 which is a means for operating the latch 18. The electromagnetic drive device 21 is fixed to the box of the speed reducer 14, and includes a coil (not shown) that generates a magnetic force by supplying electric power, a plunger 22 that is driven by the magnetic force generation, and a driven plunger 22. It includes a return spring 18S for returning to the original position, and the plunger 22
The free end of is connected to the L-shaped other end of the latch 18 by a pin. Further, in the return spring 18S, the engagement portion 19 at one end portion of the L-shaped L of the latch 18 is always the ratchet wheel 17.
The pressing force is generated so as to engage with the claw portion 17C of
The coil is configured to generate a magnetic force that drives the plunger 22 in a direction in which the engagement between the engagement portion 19 and the claw portion 17C is released.

A detection switch 23 is fixed to the box of the speed reducer 14, and an engaging portion 19 at one end of the latch 18 is provided.
And opposite to.

In the above construction, when the escalator is stopped, the electric power of the electric motor 13 is cut off.
3 is restrained by the braking device 9 via the input shaft of the speed reducer 14. Since the driving machine 8 is thus restrained, the treads 3 also stop moving via the drive chain 7 and the tread chain 2.

At this time, if the reduction ratio between the driven sprocket 6 and the sprocket 15 is about 1/4 and the reduction ratio between the sprocket 15 and the rotary shaft 16 is about 1/16 to 1/17, the total reduction ratio is 1. / 64 to 1/68. Then, the passenger load that tries to rotate the driven sprocket 6 is F
Then, the rotational force F ′ acting on the ratchet wheel 17 of the rotary shaft 16
Becomes extremely small as F '= F / 64 to F / 68. Therefore, the ratchet wheel 17 and the latch 18 can be made small.

As described above, when the tread plate 3 is stopped and held by the braking device 9, the latch 18 also causes the engaging portion 19 of the ratchet wheel 17 to be engaged by the pressing force of the return spring 18S in the electromagnetic drive device 21. 17C is engaged. For this reason, even if a large number of passengers board the stop-holding capacity of the braking device 9 or even if a large number of passengers board when the braking device 9 is out of order and loses the stop-holding capacity, the driving machine Since the rotary shaft of No. 8 is restrained by the latch 18, the tread plate 3 does not move in the descending direction.

Next, when an operation command is issued in the stopped state of the escalator, the coil of the electromagnetic drive device 21 generates magnetic force by energization via the control device 24,
Depending on the pressing force of the return spring 18S, the plunger 22
Attract. When the plunger 22 is attracted, the L-shaped other end of the latch 18 rotates about the support shaft 20,
The engagement portion 19 at one end of the L-shape is separated from the top of the ratchet wheel 17 to release the engagement. In this way, when the latch 18 is rotated to a position where the engagement portion 19 and the claw portion 17C are disengaged, the L-shaped one end of the latch 18 actuates the detection switch 23, and the detection switch 23 Is operated, electric power is supplied to the braking device 9 to release the braking force, and the electric motor 13
To activate the escalator.

Further, when the escalator in operation is stopped, when the operation stop command is issued, the control device 24
The electric motor 13 starts decelerating via this, and the electric motor 13 stops or immediately before the stop, the energization of the braking device 6 is stopped to apply the braking force, and the rotation shaft of the driving device 8 is stopped and held. At the same time as applying the braking force of the braking device 9, in other words, the braking device 9
At the same time that the power supply to the coil is stopped, the power supply to the coil of the electromagnetic drive device 21 is cut off. When the coil of the electromagnetic drive device 21 is de-energized, the coil loses its magnetic force to release the attraction of the plunger 22, and the plunger 22 is pushed by the return spring 18S in the electromagnetic drive device 21 to cause L of the latch 18 to move. The other end of the character shape is pushed to rotate the latch 18 around the support shaft 20. By the rotation of the latch 18, the engaging portion 19 on the one end side of the L-shape approaches the pawl wheel 17 side and engages with the pawl portion 17C to restrain the rotating shaft of the drive machine 8.

In the above description, the rotation shaft of the driving machine 8 is restrained by cutting off the power supply to the coil of the electromagnetic drive device 21 at the same time as applying the braking force of the braking device 9. In this case, there is no problem if the energization of the braking device 9 and the electromagnetic drive device 21 is stopped at the same time when the electric motor 13 is stopped.

However, when the energization of the braking device 9 is stopped immediately before the stop of the electric motor 13, the escalator is slightly moving due to the inertia even if the braking force is applied. Electromagnetic drive device 21
When the energization to both is stopped at the same time, the engaging portion 19 and the claw portion 17
At the moment of engagement with C, a stop impact may occur, causing the engagement portion 19 and the claw portion 17C to be destroyed, or even peripheral devices such as the speed reducer 14 to be damaged.

Such an inconvenience is solved by delaying the stop of energization of the coil of the electromagnetic drive device 21 by the delay means. That is, the control device 24 is braked so that the energization of the electromagnetic drive device 21 is stopped after a certain time (longer than the time until the escalator stops after applying the braking force) after the power supply to the braking device 9 is stopped. It is preferable to provide a timer 25 that operates based on the power-off signal of the device 9. To confirm the stop of the escalator, for example, the rotary encoder 26 provided on the rotary shaft of the electric motor 13
This is used as a confirmation signal to the control device 24. By providing the timer 25 as described above, the engagement between the engaging portion 19 and the claw portion 17C can be performed after the movement due to the inertia of the escalator disappears.
It is possible to prevent the destruction of the device.

Although the above-mentioned delay means is an electric delay means by the control device 24, it may be performed by a mechanical delay means as shown in FIG. That is, the rod 28 of the one-way damper 27 is pin-connected to the L-shaped other end of the latch 18 which is pin-connected to the plunger 22 of the electromagnetic drive device 21. The one-way damper 27 has a damper function only in one direction, and the electromagnetic drive device 2
When the L-shaped other end of the latch 18 is attracted through the plunger 22 by the excitation of the coil of No. 1, it operates promptly without the damper function, and on the contrary, by the demagnetization of the coil of the electromagnetic drive unit 21. Built-in return spring is plunger 22
When the L-shaped other end of the latch 18 is pushed out by pushing out, it has a damper function and is constructed so as to operate slowly. The L-shaped other end of the latch 18 is pushed back slowly. As a result, it is possible to lengthen the time until the engaging portion 19 engages with the claw portion 17C, and as a result, the engagement between the engaging portion 19 and the claw portion 17C is stopped after the movement due to the inertia of the escalator disappears. It can be carried out. If the slow operation time is adjusted after the elapse of a certain time after the braking force is applied to the braking device 9, the peripheral devices can be prevented from being destroyed, as in the case described above.

The above description is for the escalator, but it goes without saying that it can be applied to an electric road if it is installed at an angle.

As described above, according to this embodiment, since the means for restraining the driving machine by the engagement is provided between the rotating portion and the fixed portion, it is possible to stop and hold the tread when the vehicle is stopped by a small device. In addition, since the device is small and provided around the rotating part of the driving machine, it can be easily applied to an existing passenger conveyor.

[0035]

As described above, according to the present invention, it is possible to stop and hold the treads at the time of stopping with a small device, and also to simplify the structure and easily apply it to already delivered products. The device can be obtained.

[Brief description of drawings]

FIG. 1 is a schematic side view in vertical section according to the present invention showing the periphery of a driving machine provided with restraint means.

FIG. 2 is an enlarged plan view of the drive machine shown in FIG.

FIG. 3 is a schematic side view showing the entire escalator.

FIG. 4 is a conceptual diagram of a control system of each device shown in FIGS. 1 and 2.

FIG. 5 is a schematic side view in vertical section according to the present invention showing the periphery of a driving machine provided with another restraint means.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Main frame, 2 ... Tread chain, 3 ... Tread, 7 ... Drive chain, 8 ... Drive machine, 9 ... Braking device, 13 ... Electric motor, 14
... reducer, 17 ... claw wheel, 17C ... claw part, 18 ... latch,
19 ... Engaging part, 21 ... Electromagnetic drive device, 22 ... Plunger, 23 ... Detection switch, 27 ... One-way damper.

Claims (14)

[Claims] 1. A plurality of treads that are connected to a tread chain and rotate in a main frame installed slantingly between floors that are vertically separated from each other, and a drive that winds the tread chain around a sprocket. An inclined passenger conveyor device having a braking device for applying a braking force to the rotating shaft of the driving machine, and a means for restraining the rotating portion and the fixed portion of the driving machine by engagement is provided. An inclined passenger conveyor device characterized by: 2. A plurality of treads connected to a tread chain to rotate and a drive unit for driving the tread chain are arranged in a main frame installed slantedly between floors vertically separated from each other. ,
A braking device for applying a braking force to the rotary shaft of the drive machine,
The drive machine is an inclined passenger conveyor device including a speed reducer having a sprocket around which the tread chain is wound, and an electric motor driving the speed reducer. In the inclined passenger conveyor device, the rotating portion and the fixed portion of the drive machine are restrained by engagement. An inclined passenger conveyer device comprising means for activating the restraint means. 3. The actuating means is configured to release the restraint by the engagement of the restraint means by the supply of electric power, and enable the restraint by the engagement of the restraint means by shutting off the electric power. The inclined passenger conveyor device according to claim 2. 4. The inclined passenger conveyor device according to claim 2, wherein the restraint means is provided on the input shaft side of the speed reducer. 5. A plurality of treads that are connected to a tread chain to rotate in a main frame installed slantingly between floors that are vertically separated from each other, and a drive that winds the tread chain around a sprocket to drive it. In the inclined passenger conveyor device provided with a braking device that applies a braking force to the rotating shaft of the drive machine, with a means for restraining the rotating portion and the fixed portion of the drive machine by engagement, An inclined passenger conveyor device comprising: a means for confirming the release of the restraint of the restraint means; and a controller for releasing the braking of the braking device based on a confirmation signal of the restraint release confirming means. 6. A plurality of treads which are connected to a tread chain and rotate in a main frame installed slantingly between floors which are vertically separated from each other, and a drive which winds the tread chain around a sprocket to drive it. In the inclined passenger conveyor device provided with a braking device that applies a braking force to the rotating shaft of the drive machine, with a means for restraining the rotating portion and the fixed portion of the drive machine by engagement, An inclined passenger conveyor device comprising means for operating the restraint means in conjunction with the operation of the braking device. 7. A drive for driving a plurality of treads connected to a tread chain and rotating in a main frame tilted between floors separated vertically and a sprocket for winding the tread chain. In the inclined passenger conveyor device provided with a braking device that applies a braking force to the rotating shaft of the drive machine, with a means for restraining the rotating portion and the fixed portion of the drive machine by engagement, An inclined passenger conveyor device comprising means for operating the restraint means and means for controlling the operation means. 8. The inclined passenger conveyor apparatus according to claim 7, wherein the control means is configured to give a restraint release command to the actuating means after confirming that the movement of the treads has stopped. . 9. A plurality of treads which are connected to a tread chain and rotate in a main frame installed slantingly between floors which are vertically separated from each other, and a drive which winds the tread chain around a sprocket to drive it. A tilting type passenger conveyor device provided with a braking device that applies a braking force to the rotating shaft of the driving machine, and a means for restraining the rotating portion and the fixed portion of the driving machine by engagement is provided, An inclined passenger characterized by comprising means for activating the restraint means, means for confirming the stop of the tread, and means for controlling the operation of the actuating means based on a confirmation signal from the confirmation means. Conveyor device. 10. The inclined passenger conveyor apparatus according to claim 9, wherein the control means is configured to operate the actuating means after a predetermined time based on a confirmation signal from the confirming means. . 11. A drive for driving a plurality of treads connected to a tread chain and rotating in a main frame installed slantingly between floors vertically separated from each other and winding the tread chain around a sprocket. In the inclined passenger conveyor device provided with a braking device that applies a braking force to the rotating shaft of the drive machine, with a means for restraining the rotating portion and the fixed portion of the drive machine by engagement, An inclined passenger conveyor device comprising means for activating the restraint means and means for controlling the actuation means, and means for delaying the actuation means in the control means. 12. A drive for driving a plurality of treads connected to a tread chain and rotating in a main frame installed slantedly between floors vertically separated from each other, and winding the tread chain around a sprocket to drive it. In the inclined passenger conveyor device provided with a braking device that applies a braking force to the rotating shaft of the drive machine, with a means for restraining the rotating portion and the fixed portion of the drive machine by engagement, An inclined passenger conveyor device comprising means for activating the restraint means, means for controlling the actuating means, and means for delaying the restraint operation in the restraint means. 13. The one-way cushioning mechanism according to claim 12, wherein the restraint operation delay means is a one-way buffer mechanism that operates slowly in the restraint direction of the restraint means and operates swiftly in the restraint release direction. Inclined passenger conveyor system. 14. A main frame installed obliquely between floors which are vertically separated from each other, and a drive which is axially supported by an upper machine room and a lower machine room formed at both longitudinal ends of the main frame. A sprocket, a driven sprocket, a tread chain wound between these two sprockets and endlessly connecting a plurality of treads, a driven sprocket fixed coaxially with the driving sprocket, and a drive wrapped around the driven sprocket. A tilt provided with a chain, a speed reducer having a sprocket around which the drive chain is wound, an electric motor for giving rotational power to the speed reducer, and a braking device for giving a braking force to a rotary shaft of either the electric motor or the speed reducer. In the type passenger conveyor device, a ratchet wheel is provided on a rotary shaft of either the drive motor or the electric motor, and a latch supported by a fixed portion facing the claw portion of the ratchet wheel, A pressing body that constantly pushes the latch toward the claw portion side of the ratchet wheel, an electromagnetic drive unit that separates the latch that is pressed by the pressing body from the claw portion of the ratchet wheel, and a separated from the claw portion An inclined passenger conveyor device, comprising: a damper for separating a speed at which the latch is returned to the claw portion of the ratchet wheel to make the speed slower than the speed.