JP3780467B2 - Passenger conveyor equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to passenger conveyor devices such as escalators and electric roads.
[0002]
[Prior art]
Conventionally, the brake provided in the driving means of the passenger conveyor device is stopped by an unmanned operation with the overload or the safety device activated when the passenger is on a passenger foot, for example, an escalator step. Or, when stopping by manned operation to stop driving, the system operates with a constant braking force regardless of the driving direction and load state. Further, the braking force of the brake is set so as to be a braking distance that can sufficiently stop even at the maximum load when many passengers are riding. For this reason, when the load applied to the brake is small, there is a problem that the braking distance is shortened, the deceleration at the time of stopping is large, and the passenger may fall down.
[0003]
As a countermeasure for this, there is known a passenger conveyor device that changes the braking force of the brake depending on the magnitude of the load applied to the driving means, for example, an escalator disclosed in JP-A-7-252074.
[0004]
[Problems to be solved by the invention]
The conventional passenger conveyor device has not been considered for the idea of slowly stopping when a safety device related to the passenger is activated and protecting the passenger, or preventing accidents in which the passenger falls due to an unexpected stop during operation. .
[0005]
An object of the present invention is to safely protect and stop a passenger when stopping while the passenger is on the passenger foot.
[0006]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention provides an endless shape in which a plurality of passenger treads on which passengers are placed are sequentially installed adjacent to each other in a main frame installed between two getting-on / off floors located apart from each other. In a passenger conveyor apparatus that includes a driving unit that drives a conveying unit to move and rotate between the two getting-on / off floors, the driving unit includes a brake that generates a plurality of different braking forces.
[0007]
The driving means of the passenger conveyor device is an endless conveying means provided endlessly between the two landing floors in the main frame installed between the two landing floors positioned apart from each other, i.e., one connected endless shape, For example, the escalator's step chain is driven to move and rotate between two landings. Since the endless transport means is installed with a plurality of passenger footings on which passengers are placed sequentially adjacent to each other, when the endless transport means is driven by the drive means, the plurality of passenger footsteps are configured to pass passengers between the two landing floors. Move and rotate on board.
[0008]
And, when the passenger conveyor device is stopped by the stop signal generated from the safety device of the passenger conveyor device, etc., since the brake of the driving means generates a plurality of different braking forces, the braking force according to the emergency level of the stop signal Brake, unnecessary, without applying excessive braking force, that is, operate under a slow stop condition where the braking force is weakened by the emergency level of the stop signal, or operate under a sudden stop condition when an emergency stop is required Since it can operate and stop with braking characteristics as required, it is possible to safely protect passengers riding on the passenger foot and increase safety for passengers and overall reliability of the braking system.
[0009]
Furthermore, the brake includes a first electromagnetic coil that generates a braking force when the power is turned off, and a second electromagnetic coil that generates a braking force when the power is turned on, and the first electromagnetic coil and the first electromagnetic coil The plurality of different braking forces are generated by a combination of two electromagnetic coils. Since the brake includes the first electromagnetic coil and the second electromagnetic coil, the braking force generated by the first electromagnetic coil when the power is turned off and the braking force generated by the second electromagnetic coil when the power is turned on. , And a plurality of different braking forces such as a braking force obtained by combining the first electromagnetic coil and the second electromagnetic coil. In this case, the first electromagnetic coil and the second electromagnetic coil may be provided separately. In this case, the number of combinations of the first electromagnetic coil and the second electromagnetic coil is increased, and a plurality of the electromagnetic coils are increased. Generate different braking forces.
[0010]
Furthermore, a braking content selection device is provided that discriminates a plurality of stop signals of the passenger conveyor device, selects a predetermined braking pattern, and causes the brake to generate a braking force corresponding to the braking pattern. By providing a braking content selection device, when the passenger conveyor device is operating, when a stop signal is input from the safety device, control device, or other device of the passenger conveyor device, these multiple stop signals are discriminated. Then, a predetermined braking pattern is selected, and a braking force corresponding to the braking pattern is generated in the brake. With this control, the passenger conveyor device can be stopped according to the urgency of the stop signal.
[0011]
Furthermore, when an emergency stop signal is input, the braking content selection device selects a braking pattern for operating both the first electromagnetic coil and the second electromagnetic coil of the brake, and performs an emergency stop. When a stop signal that is not required is input, a braking pattern for operating only the first electromagnetic coil of the brake is selected. When an emergency stop signal is input to the braking content selection device, the braking content selection device selects a braking pattern that activates both the first electromagnetic coil and the second electromagnetic coil of the brake. The braking force works simultaneously, and the passenger conveyor device can be stopped urgently by simple means. When a stop signal that does not require an emergency stop is input to the braking content selection device, a braking pattern that activates only the first electromagnetic coil of the brake is selected, so that the braking force can be further reduced and moderately Can be braked. Therefore, the braking pattern is simplified and the braking control is simplified.
[0012]
In addition, when the brake sequentially generates and brakes a plurality of different braking forces, the brake includes a control device that shifts after a certain time when shifting from one braking pattern to the next. By providing a control device that shifts from one braking pattern to the next braking pattern after a certain period of time, passengers riding on the passenger foot can be prepared to prevent falling by stopping, etc. A passenger conveyor device.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a passenger conveyor device of the present invention will be described with reference to FIGS.
[0014]
FIG. 3 is a schematic side view showing an embodiment of a passenger conveyor device according to the present invention. FIG. 4 is a side view of the periphery of the upper drive unit of the passenger conveyor apparatus of FIG.
[0015]
As shown in FIG. 3, this passenger conveyor device is an escalator E, and is endless in a main frame 1 installed at an inclination between an upper floor UF and a lower floor LF separated vertically. A step 3 which is a passenger tread that is attached in succession by a step chain 2 as a state conveying means is guided to move or move with a passenger and to rotate. These steps 3 are guided by guide rails (not shown) supported by the main frame 1. The step chain 2 is wound and driven by a drive sprocket 4 that is pivotally supported in the upper machine chamber 1A formed at both ends of the main frame 1 and a driven sprocket 5 that is pivotally supported in the lower machine chamber 1B. The upper machine room 1A and the lower machine room 1B are respectively closed by the getting-on / off floors 12A and 12B. Further, in the upper machine room 1A, there are provided a control device 20 for controlling each device of the escalator and a braking content selection device 21 (also referred to as “braking pattern selection device”) to be described later. The device 21 may be built in the control device 20.
[0016]
As shown in FIG. 4, the drive sprocket 4 has a driven sprocket 6 coaxially fixed, and a drive chain 7 is wound around the driven sprocket 6 to transmit the rotational force of the drive machine 8 as a drive means. To do. The upper machine room 1A also stores a control device 20 that controls the drive unit 8 based on control signals from safety devices (not shown) and driving operation devices (not shown) arranged in various places on the escalator. . A balustrade panel 10 is erected on both sides of the endless step 3 along the moving and rotating direction, and a moving handrail 11 driven in synchronization with the step 3 is supported on the periphery thereof.
[0017]
FIG. 5 is a plan view of FIG. The drive machine 8 includes an electric motor 13, a reduction gear 14, a brake 50, and the like. A rotation shaft 16 of the electric motor 13 is connected to an input shaft 17 of the reduction gear 14 via a shaft joint 18, and an input shaft 17 of the reduction gear. Is extended to a side opposite to the side where the electric motor 13 is located, and a brake 50 is provided on the input shaft 17 on the opposite side. The reducer 14 is a so-called parallel shaft gear reducer in which the input shaft 17 and the output shaft 14a are arranged in parallel, and a so-called helical gear is used. A sprocket 15 is provided on the output shaft 14 a of the speed reducer 14 and the drive chain 7 is wound around the sprocket 15.
[0018]
FIG. 1 is a cross-sectional view showing an embodiment of a brake included in a driver of a passenger conveyor device according to the present invention. The escalator E of the present embodiment has a very general structure, but the brake 50 provided on the input shaft 17 of the drive machine has the following characteristics. In other words, the brake 50 can switch the braking force between two levels of high and low, and is incorporated in the input shaft 17 of the speed reducer so as to be slidable in the longitudinal direction of the shaft by a spline 17A or the like, and rotates together with the input shaft 17. A disc-like disc 51 that is fixed, a brake lining 51L that is fixedly attached to both surfaces of the disc 51, a push disc 52 that presses the brake lining 51L to generate a braking force, and a push spring 53 that pushes the push disc 52 The negatively acting electromagnetic coil 54 as the first electromagnetic coil and the positively acting electromagnetic coil 55 as the second electromagnetic coil for attracting (or adsorbing) the push disk 52, the body 56A constituting the entire brake 50, and 56B etc. are included. The negative operation type electromagnetic coil 54 generates a braking force when the power source of the electromagnetic coil is cut off. Further, the positive operation type electromagnetic coil 55 generates a braking force when power is supplied to the electromagnetic coil. The body 56B is fixed to the body 56A with a bolt 56C as shown in FIG.
[0019]
Next, a case where braking is released for starting up the escalator E will be described. As shown in FIG. 1, the power is supplied to the electromagnetic coil 54 by the start command to be in an excited state, and the push disk 52 is compressed by the electromagnetic force to compress the push spring 53 and attracted to the negative operation type electromagnetic coil 54 side (FIG. 1). In the illustrated state). As a result, a gap is created between the push disc 52 and the brake lining 51L, the braking state is released, and the input shaft 17 can be rotated and activated. At this time, the positive operation type electromagnetic coil 55 is kept in a non-excited state without being supplied with power.
[0020]
FIG. 2 is a schematic control system diagram of the brake of FIG. The operation of braking for stopping the escalator E will be described. First, a braking pattern for slowly stopping the escalator E (referred to as “slow stop pattern”) and a braking pattern for suddenly stopping (referred to as “sudden stop pattern”) are input to the braking content selection device 21 in advance. Specifically, the braking pattern is a pattern corresponding to a braking force determined by combining a plurality of different braking forces. In the present embodiment, the pattern is two, that is, a two-stage type. is there.
[0021]
Next, the braking content selection device 21 discriminates stop signals from the plurality of safety devices 19 and stop signals from the control device 20 and classifies (or selects) them into a slow stop pattern and a sudden stop pattern. The slow stop pattern is set for a case where a safety device (not shown) such as a malfunction on the device side or a step running abnormality detection device is operated that does not need to be stopped as urgently as a sudden stop. Only be braked. On the other hand, the sudden stop pattern is set when emergency stop is required, for example, when an emergency stop switch or a moving handrail advance entrance safety device (not shown) is operated, and the negative action type electromagnetic coil 54 and the positive action type electromagnetic coil are set. Both coils 55 are actuated simultaneously to be braked. The sudden stop pattern has the same level of braking characteristics (braking force) as the conventional one.
[0022]
As shown in FIG. 1, in the operation of the slow stop pattern, the power supply of the negative operation type electromagnetic coil 54 is cut off by the slow stop command to release the excitation state of the negative operation type electromagnetic coil 54. As a result, the push disk 52 attracted to the negative operation type electromagnetic coil 54 side is pushed in the direction of the arrow A by the push spring 53, and the rotating brake lining 51L is pressed to be braked. This braking force is determined by the spring force of the push spring 53. Therefore, if the spring force of the push spring 53 is set to a spring force that is smaller than the conventional braking force, a braking pattern of a gentle stop condition with a gentle braking characteristic can be obtained. Further, when the power supply to the passenger conveyor device is cut off due to a power failure or the like, the power supply of the negative operation electromagnetic coil 54 is cut off, resulting in a braking pattern of a slow stop condition of braking by the spring force of the push spring 53, for example It is possible to prevent passengers from falling due to a sudden power outage, which increases safety.
[0023]
Next, in the operation of the sudden stop pattern, the power source of the negative operation type electromagnetic coil 54 is cut off by the sudden stop command, the excitation state of the electromagnetic coil 54 is released, and the disc 51 is braked by the spring force of the push spring 53. Is the same as the slow stop pattern described above, but simultaneously with the sudden stop command, power is supplied to the positive operation type electromagnetic coil 55 to bring it into an excited state, and the push disk 52 is moved to the arrow shown in FIG. Aspirate in direction A. As a result, the push disc 52 is added to the braking force by the push spring 53 and the braking force by the attracting (or attracting) of the positive operation type electromagnetic coil 55 to add the braking force larger than that of the slow stop. Press. Therefore, the braking characteristic is quicker than the slow stop pattern.
[0024]
Further, as another embodiment of the sudden stop, in order to prevent the passenger from falling by an unexpected sudden stop, the power supply to the positive action type coil 55 for the sudden stop is delayed for a certain period (for example, 0.5 seconds). is there. That is, in response to a sudden stop command, the excitation state of the negative operation type electromagnetic coil 54 is released and braking is started by the spring force of the push spring 53, and then a positive operation type electromagnetic coil 55 for sudden stop after a certain period of time. Is supplied with an electric current to bring it into an excited state, and braking force is increased to apply sudden stop braking. As a result, the braking starts slowly and then suddenly brakes, so that the passenger on the step can feel the speed change and hold it by grasping the moving handrail by the deceleration by the first small braking force. You can avoid falling by slowing down.
[0025]
Further, the escalator E according to the present embodiment is configured such that when the power supply to the escalator E is interrupted due to a power failure or the like, the negative operation type electromagnetic coil 54 is turned off and the braking force is gently stopped by the spring force of the push spring 53. It becomes a pattern, and it is possible to prevent the passenger from falling even in an unexpected stop (power failure). Thus, the escalator E can be braked with an optimal stop pattern as necessary, such as braking with a slow stop pattern with weak braking force, or braking with a sudden stop pattern when emergency stop is required. As a result, the safety for passengers and the reliability of the entire control system can be improved.
[0026]
In the above-described embodiment, the escalator E is described as an example of the passenger conveyor device. However, the present invention can be applied to an inclined electric road installed across upper and lower floors and an electric road installed horizontally. Of course.
[0027]
【The invention's effect】
According to the passenger conveyor device of the present invention, when the passenger stops on the passenger foot, the passenger can be safely protected and stopped, and the reliability and safety of the passenger conveyor device can be improved. .
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an embodiment of a brake included in a driver of a passenger conveyor device according to the present invention.
FIG. 2 is a schematic control system diagram of the brake of FIG.
FIG. 3 is a schematic side view showing an embodiment of a passenger conveyor device according to the present invention.
4 is a side view of the periphery of the upper drive unit of the passenger conveyor apparatus of FIG. 3; FIG.
FIG. 5 is a plan view of FIG. 4;
[Explanation of symbols]
E Escalator (passenger conveyor device)
1 Main frame 2 Step chain (endless conveying means)
3 steps (passenger treads)
8 Drive (drive means)
12A, 12B Boarding / alighting floor 20 Control device 21 Braking content selection device 50 Brake 54 Negative action type electromagnetic coil (first electromagnetic coil)
55 Direct acting electromagnetic coil (second electromagnetic coil)

Claims (4)

In the main frame installed between two boarding floors that are located apart from each other, a plurality of passenger treads on which passengers are placed are sequentially installed adjacent to each other to drive endless transport means provided endlessly. In the passenger conveyor device comprising driving means for moving and rotating between the floors,
The drive means has a brake that generates a plurality of different braking forces ,
The brake includes a first electromagnetic coil that generates a braking force when the power is turned off, a second electromagnetic coil that generates a braking force when the power is turned on, and the first electromagnetic coil and the second electromagnetic coil. A passenger conveyor device comprising one pushing disk to be sucked and one disk that rotates together with the input shaft of the driving means and is pressed against the pushing disk through a lining . In claim 1 ,
A passenger conveyor device comprising a braking content selection device for determining a plurality of stop signals of the passenger conveyor device, selecting a predetermined braking pattern, and causing the brake to generate a braking force corresponding to the braking pattern. In claim 2 ,
When an emergency stop signal is input, the braking content selection device selects a braking pattern for operating both the first electromagnetic coil and the second electromagnetic coil of the brake and does not require an emergency stop. When a stop signal is input, the passenger conveyor apparatus which selects the braking pattern which operates only the 1st electromagnetic coil of the said brake device. In claim 2 or 3 ,
The brakes when the braking sequentially generating a plurality of different braking forces, the passenger conveyor device including a controller for shifting at a certain time when the transition from one brake pattern to the next brake pattern.

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