CN1974365B - Passenger Conveyor - Google Patents

Abstract

To provide a passenger conveying device that detects abnormalities such as vibrations and shocks that occur when steps and foreign objects collide with the comb-tooth portion with a sensor, and in addition, the sensor is less likely to be damaged even when the comb-tooth portion is damaged damage, and the sensor is not easily damaged by external force and water droplets. The passenger conveying equipment has a step (3) that moves cyclically from below one entrance/exit floor (1) to under another entrance/exit floor (1), and railings erected along the moving direction of the steps (3), Wherein, the sensor (4) that detects the abnormality of the entrance floor (1) is installed on the entrance floor (1) via the base (5), and the sensor (4) and the base (5) are connected by the railing cover.

Description

Passenger Conveyor

technical field

The present invention relates to a passenger conveying apparatus having a sensor for detecting an abnormality of a comb tooth portion provided at a front end of an entrance/exit floor.

Background technique

As a prior art, there has been disclosed a passenger conveying facility that detects breakage of a comb portion at an entrance floor or clogging with foreign matter and notifies of an abnormality. For example, Japanese Patent Application Laid-Open No. Hei 5-155576, Patent Document 1, discloses a passenger conveying device in which a collision detection sensor for reporting abnormality is provided on the lower surface and the front end of the comb plate. In addition, in Patent Document 2, Japanese Patent Laid-Open No. Hei 6-171884, a passenger conveying device is disclosed. The passenger conveying device is provided with a pressure detector between the comb plate and the entrance/exit floor. Operation stopped.

Patent Document 1: Japanese Patent Application Laid-Open No. 5-155576

Patent Document 2: Japanese Patent Application Laid-Open No. 6-171884

However, in the passenger conveying device of the above-mentioned Patent Document 1, since the structure in which the collision detection sensor is directly mounted on the comb plate is adopted, when the comb plate is damaged, the collision detection sensor may also be damaged. situation, so that the replacement frequency of the collision detection sensor becomes higher. In addition, when a collision detection sensor is installed in an already installed passenger conveyor, processing of the comb plate is required, resulting in an increase in cost.

Furthermore, in the passenger conveying equipment of the above-mentioned Patent Document 2, since a pressure detector is installed between the comb plate and the entrance/exit floor, it is easy to be dragged by external force generated when passengers walk, trolleys and luggage, etc. There is a high possibility of damage to the pressure detector due to the external force generated during the test and the impact of water droplets entering.

Contents of the invention

Therefore, it is an object of the present invention to provide a passenger conveying device that detects abnormalities such as vibration and impact generated when steps and foreign objects collide with the comb-tooth portion through sensors, and even when the comb-tooth portion is damaged, The sensor is also not easy to be damaged, and the sensor is not easy to be damaged due to external force and water drop.

In order to achieve the above object, the passenger conveying equipment of the present invention has: a step that moves cyclically from under one entrance/exit floor to under the other entrance/exit floor; The sensor for the abnormality of the entrance floor is installed on the entrance floor via a sensor support part, and the sensor and the sensor support part are covered by the railing.

According to the present invention, it is possible to provide a passenger conveying device that detects abnormalities such as vibration and impact that occur when a step or a foreign object collides with the comb-tooth portion with a sensor, and in addition, even when the comb-tooth portion is damaged, The sensor is also not easy to be damaged, and the sensor is not easy to be damaged due to external force, water drops and the like.

Description of drawings

Fig. 1 is a figure showing the installation position of the sensor in the escalator of the present embodiment;

Fig. 2 is a schematic side view of the escalator of the present embodiment;

Fig. 3 is a diagram showing the inside of the handrail of the escalator of the present embodiment;

Fig. 4 is the figure that shows the base of this embodiment;

FIG. 5 is a diagram showing a base of another embodiment;

Fig. 6 is a diagram showing a protective cover according to still another embodiment.

Symbol Description

1- entrance and exit floor; 2- comb part; 3- steps; 4- sensor; 5- base; 6, 14- bolt; 7- sensor substrate; 8- railing panel; 9- handrail; 10- skirt guard ;11-frame; 12, 21-screw; 13-protective cover; 17-mechanical room; 18-inner cover; 19-outer cover; 20-L-shaped steel

Detailed ways

Fig. 1 shows the installation position of the sensor on the escalator as one of the passenger conveying equipment. In addition, FIG. 2 is a schematic side view of the escalator.

The escalator of the present embodiment has: the frame 11 that has inclined part and the substantially horizontal part above and below; A step 3 that moves circularly under another entrance and exit floor 1 ; railings that are set up erect along the moving direction of the step 3 . Moreover, the railing in this invention refers to the part comprised from the inner side cover 18, the outer side cover 19, the skirt guard 10, and the railing panel 8. As shown in FIG.

Moreover, the escalator of this embodiment is comprised so that the machine room 17 may be provided in the part which comprises the upper substantially horizontal part in the frame 11. As shown in FIG. And, the step 3 and the handrail 9 disposed on the outer peripheral side of the handrail are synchronously moved by the drive device housed in the machine room 17 and circulated. And, the comb-tooth part 2 made of comb teeth and comb-tooth plate etc. is installed on the front end of the access floor 1, at the substantially horizontal part above and below the escalator, the steps 3 pass through the lower surface of the comb-tooth part 2, after that, Rung 3 flips up and down for circular movement.

Among them, when some abnormality occurs in the step 3, causing the upper surface of the step 3 to protrude beyond the lower end of the comb-tooth part 2, if it moves in this state, the step 3 and the comb-tooth part 2 will collide and make the comb-tooth part 2 2 was damaged. Moreover, it is also possible that the collided steps 3 are stuck at the entrance and exit floor 1 and stop, thereby causing successive collisions between subsequent steps.

The above-mentioned phenomenon may also occur when foreign matter is mixed between adjacent steps 3 . Specifically, when the foreign matter caught between the steps 3 protrudes to the upper surface of the step 3, the foreign matter cannot pass through the lower end of the access floor 1, but collides with the comb part 2, causing the comb part 2 to be damaged. Moreover, it is also possible that the movement of the steps 3 is stopped due to a foreign object being caught between the entrance floor 1 and the steps 3 , thereby resulting in successive collisions between subsequent steps 3 .

Therefore, it is necessary to stop the circulation of the escalator in time at the moment when the collision phenomenon occurs at step 3. Therefore, in the escalator of the present invention, sensors are used to detect abnormalities such as impact and vibration. Hereinafter, this detection method will be described in detail.

After the step 3 collides with the comb tooth part 2 arranged at the front end of the entrance floor 1 , the impact generated during the collision causes the comb tooth part 2 to be broken and damaged, and at the same time, the generated vibration is transmitted to the entrance floor 1 . The impact and vibration are detected by the sensor 4 installed on the entrance/exit floor 1, and when the detection value is above a preset threshold, the circulation operation of the escalator is stopped immediately.

Here, the reason for setting the threshold in advance is to fully consider that in the cycle operation, not only the vibration generated by passengers walking will appear continuously on the entrance and exit floor 1 of the escalator, but also there will be vibrations caused by running, jumping and jumping. Vibration from the action known as normal walking. In addition, it is also considered that in rainy days or similar weather conditions, passengers carry umbrellas when walking, so there may be vibrations caused by knocking on umbrellas, and there may be other causes of various vibrations. Therefore, in order to avoid misjudging the above-mentioned various vibrations generated during normal operation as abnormal, the acceleration level value generated during normal operation is grasped in advance as a threshold value, so that it can be compared with that generated when it collides with the step 3. The acceleration level value is compared and judged. In this way, in the escalator of the present invention, by distinguishing vibrations generated due to other causes, it is possible to reliably detect shocks and vibrations generated when the steps 3 collide.

Moreover, the acceleration generated when the step 3 and the comb part 2 collide has a waveform with a high peak at the moment of the collision and then decays. Since the generation time of this waveform is very short, only about 0.1 to 0.2 seconds, the sensor 4 It is necessary to accurately detect the impact and vibration generated at the comb portion 2 with high sensitivity. Therefore, in this embodiment, the sensor 4 is installed at the entrance floor 1 where impact and vibration can be directly transmitted. The installation position and installation method of the sensor are explained below.

First, a sensor 4 that detects a collision of a step 3 or a foreign object with the comb portion 2 is mounted on a base 5 as a sensor support. Further, through holes are provided in the base 5 and the doorway floor 1 , and the base 5 and the doorway floor 1 are supported by the frame 11 by common bolts 6 .

Here, at a plurality of places on the outer periphery of the entrance floor 1, fastening holes for bolts for fixing to the frame 11 located below it are provided. Both sides of the front end of the tooth portion 2 and both sides of the rear end of the entrance floor 1 on the opposite side to the front end side. Since the sensor 4 is arranged in the vicinity of the collision position with the step 3, it can be detected more timely and with higher sensitivity, and the sensor 4 can also be accommodated inside the railing, so it is used for fastening the mounting base 5. The holes are preferably located on both sides of the front end of the access floor 1 . And, since the drive sprocket (sprocket) etc. which transmits power from the driving device of the escalator through the chain is arranged near the lower part of one side in the front end both sides, so considering factors such as the wiring work of the sensor signal, The sensor 4 etc. is preferably arranged inside the railing on the side opposite to the side where the drive sprocket teeth are located. However, since the purpose of the sensor 4 is to detect impact and vibration, the location of the sensor 4 is not necessarily limited to one side, and sometimes it can be arranged on both sides as required.

In this way, in this embodiment, since the existing fastening holes are used, when the sensor 4 is installed on the entrance floor 1, it is not necessary to perform new processing work on the entrance floor 1 . That is to say, the installation structure of the sensor 4 is simple, which can reduce the equipment cost. Furthermore, since the installation position of the sensor 4 is relatively close to the position of the comb portion 2, detection can be performed near the source of the shock or vibration.

Here, since an unspecified number of passengers use the escalator, there is a possibility of being hit by an unimaginable external force or mischief due to normal walking in the vicinity of the walking range of the passengers. And, considering that in rainy days or similar climatic conditions, the water droplets on the passenger's umbrella and raincoat may drip down, so there is a risk that the sensor 4 made of electronic components in particular will be damaged accordingly. With regard to water droplets, escalators installed outdoors are particularly affected.

However, in the present embodiment, since the sensor 4 and the sensor support portion are covered by the railing, even if the broken fragments of the comb tooth portion 2 or the broken fragments of the step 3 are scattered around, there will be no danger. Sensor 4 does direct damage, so it's more appropriate. Hereinafter, the structure around the sensor 4 and the sensor support portion will be described in detail with reference to FIG. 3 .

The railing is located at the top of the front end of the access floor 1. As shown in FIG. And, the skirt guard plate 10 adopts the structure that can be installed on the L-shaped steel through the screw 21, therefore, when the base 5 is installed, the railing can be easily removed or installed. According to the above configuration, since the installation location of the sensor 4 is not within the walking range of the passenger, it is possible to prevent the sensor 4 from being accidentally damaged.

Next, as a specific sensor 4 that detects an abnormality of the entrance floor 1, an acceleration sensor can be mentioned. In recent years, with the development of MEMS technology, ultra-small chips of this kind of acceleration sensors can be bought in the market at a very low price, and they have high sensitivity. The number of acceleration detection axes of the sensor 4 varies with different models, and has a fixed sensing direction. Generally speaking, since the transfer characteristic difference between the sensing direction and the non-sensing direction of the acceleration sensor is about 20-40dB, there is a sensitivity difference of 1/10-1/100 at the level of acceleration, so it is necessary to use the sensor 4 The sensing direction is aligned with the application direction of the vibration generated when colliding with the step 3. When the sensor 4 is installed on the access floor 1, since the existing fastening holes are used, the fastening direction, the hole diameter and the used bolt size are all determined in advance. Therefore, in order to adjust the sensing direction of the sensor 4 to a predetermined direction, it is installed on the entrance/exit floor 1 via the base 5 .

Hereinafter, a method of mounting the sensor 4 and the base 5 in this embodiment will be described with reference to FIG. 4 . In this embodiment, the structure of installing the sensor 4 on the side of the base 5 is adopted. Specifically, the chip of the sensor 4 is fixed on the sensor substrate 7, and then the sensor substrate is fixed by screws 12 and other fastening components. 7 is installed on the mounting seat located on the side of the base 5 having a through hole in the up and down direction. And, when it is installed on the entrance floor 1, the detection direction of the sensor 4 and the advancing direction of the step 3 corresponding to the generation direction of impact and vibration are kept parallel and coincident.

At this time, the size of the base 5 is preferably as small as possible. This is because, since the sensitivity of the sensor 4 is very good, if the base 5 is too large, the sensor 4 may detect even the resonance frequency of the sensor support part. Generally, the resonant frequency of the acceleration sensor itself is in a very high frequency band of tens of KHz, and the resonant frequency of the sensor support itself does not pose a problem in the frequency band for the purpose of impact detection. However, when the resonant frequency of the sensor support part is in a lower frequency band, such as a frequency range of about 1000 Hz, the sensitivity of the sensor 4 may be affected by the sensor support part. Therefore, the height dimension of the base 5 as the sensor supporting part is preferably controlled within the necessary minimum range. Specifically, the height dimension of the base 5 is set such that the bolts 6 used when it is installed on the entrance and exit floor 1 can It passes through and is substantially the same size as the mounting size of the sensor substrate 7 on which the sensor 4 chip is fixed. Moreover, the shape of the base 5 is not necessarily limited to the cube shown in FIG. 4 , and any shape can be used as long as the bolt 6 can be mounted and the sensor mounting surface required for wiring the sensor signal lines can be ensured.

In addition, generally speaking, since the sensitivity of the sensor 4 does not differ whether the side is used as the installation surface or the upper surface is used as the installation surface, there is no difference in the sensitivity of the sensor 4, so the installation surface is not necessarily limited to the side of the base 5, but can The upper surface of the base 5 is used as the mounting surface. Therefore, FIG. 5 shows an embodiment in which the upper surface of the base 5 is used as the mounting surface of the sensor 4 . In this embodiment, the surface of the bolt through hole of the base 5 is the same surface as the installation surface of the sensor substrate 7. When it is installed on the access floor 1, its installation form is the same as when it is installed on the side, so that the detection of the sensor 4 The direction is parallel and consistent with the forward direction corresponding to the generation direction of the impact and vibration of the steps 3 .

As mentioned above, by installing the sensor 4 in the space surrounded by the railings, the sensor 4 can be placed outside the walking range of the passengers, so it can be prevented from being damaged by unexpected external force during normal operation, and it can be prevented that water droplets and the like are directly dripping. onto the sensor. However, since the sensor 4 is mounted so as to be exposed from the sensor substrate 7 , a structure in which the sensor 4 and the base 5 are entirely covered by the protective cover 13 may be adopted as a precautionary measure.

FIG. 6 shows the structure of the protective cover 13 . This protective cover 13 is made of thin plate, and it is formed into the shape that encloses the upper surface and the side of base 5, and when installing, covers whole base 5 from above, and it is fastened on the upper end with other bolts 14 in advance. In the bolt 6 that is provided with the bolt hole. Above-mentioned protective cover 13 as shown in Figure 4 and Figure 5, even if the shape of base 5 is different, also can adopt same installation method to install. And, since the protective cover 13 itself is arranged in the space enclosed by the railing, it will not directly suffer from strong external force, so it is not necessary to be set as a firm structure, and a simple structure assembled with thin plates can achieve the purpose.

By employing the protective cover 13 as described above, it is possible to more reliably prevent the sensor 4 from being damaged. Moreover, in case the sensor 4 needs to be repaired, the protective cover 13 can be removed only by removing the bolt 14, so the sensor 4 can be easily confirmed without removing the base 5.

Moreover, the acceleration sensor adopted in this embodiment can not only detect the collision phenomenon of the step 3, but also can be used to detect the shaking caused by the earthquake, and when the vibration intensity is high, the safety device can be activated to stop the operation. When used to detect earthquakes, it is not only necessary to consider protecting the sensor from being affected by the walking of passengers, but also to fix the acceleration sensor to a solid part. In this case, the structure in which the acceleration sensor and the entrance floor 1 are supported together by the frame 11 shown in this embodiment is also effective.

In addition, in the above-mentioned present embodiment, although the escalator in which the level difference is generated between the steps has been described as an example, the same structure can also be adopted in the moving walkway as one of the passenger conveying equipment. Therefore, the term "step" used in this specification also includes the meaning of the steps in the moving walkway.

Claims (4)

1. apparatus of passenger conveyor has and circulates mobile step from the below on floor, a gangway to the below on another floor, gangway and erect the railing of setting along the moving direction of this step, it is characterized in that,

Detect the unusual sensor in floor, described gangway and be installed on the floor, described gangway via sensor support portion, described sensor and sensor support portion are covered by described railing.

2. an apparatus of passenger conveyor possesses: the framework with approximate horizontal part of sloping portion and above and below; Be installed in the floor, gangway on the approximate horizontal part of above and below of this framework; Mobile step circulates to the below on another floor, gangway from the below on floor, a gangway; And erect the railing that is arranged on this step side, it is characterized in that,

The sensor of collision divide to take place in the comb teeth part that detects described step or foreign matter and be arranged on floor, described gangway one end, be installed in and be configured in the described railing in-to-in sensor support portion, this sensor support portion and floor, described gangway are provided with through hole, and this sensor support portion and floor, gangway are supported on the described framework by shared bolt.

3. an apparatus of passenger conveyor possesses: the framework with approximate horizontal part of sloping portion and above and below; Be installed in the floor, gangway on the approximate horizontal part of above and below of this framework; Mobile step circulates to the below on another floor, gangway from the below on floor, a gangway; And erect the railing that is arranged on this step side, it is characterized in that,

Acceleration pick-up is installed in and is configured in the described railing in-to-in sensor support portion, this sensor support portion and floor, described gangway are provided with through hole, and this sensor support portion and floor, gangway are supported on the described framework by shared bolt.

4. as claim 2 or 3 described apparatus of passenger conveyor, it is characterized in that described sensor support portion is configured in the inside of railing of the opposition side of drive sprocket place one side.

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