CN116715128A - Step missing protection device and passenger transportation device comprising same - Google Patents
Step missing protection device and passenger transportation device comprising same Download PDFInfo
- Publication number
- CN116715128A CN116715128A CN202310501344.XA CN202310501344A CN116715128A CN 116715128 A CN116715128 A CN 116715128A CN 202310501344 A CN202310501344 A CN 202310501344A CN 116715128 A CN116715128 A CN 116715128A
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- China
- Prior art keywords
- protection device
- sensor
- receiving ends
- adjusting bolt
- truss
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- 230000001419 dependent effect Effects 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000009420 retrofitting Methods 0.000 description 2
- 208000033748 Device issues Diseases 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B29/00—Safety devices of escalators or moving walkways
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- Escalators And Moving Walkways (AREA)
Abstract
According to a first aspect of the present invention, there is provided a step missing protection device for a passenger conveyor, comprising a sensor and a controller, the sensor comprising a transmitting end and two receiving ends arranged side by side, the transmitting end and the receiving ends being respectively arranged on both sides of a horizontal section of a truss of the passenger conveyor and facing each other, wherein the transmitting end and the receiving ends are arranged on the same horizontal level below an upper surface of a step; when the passenger conveyer operates, the transmitting end of the sensor transmits a signal to the receiving end, and if the two receiving ends simultaneously receive the signals transmitted by the transmitting ends, the controller transmits a stop instruction to stop the passenger conveyer. According to a second aspect of the present invention there is also provided a passenger conveyor comprising a step-missing protection device as described above.
Description
Technical Field
The present invention relates to a step-missing protection device and a passenger conveyor comprising such a step-missing protection device. The passenger transport means is for example an escalator or a travelator.
Background
For passenger transportation devices such as escalators or moving walkways, passenger safety is a primary concern in the operation of the device. Step missing is one of the major safety problems, as this can lead to the passengers stepping empty and even the passengers' feet being caught in the elevator interior. It is therefore desirable to provide a means for detecting whether the gap between adjacent steps is within a safe range before the steps move to the exit to ensure safe operation of the passenger conveyor.
Disclosure of Invention
In view of the above, the present invention proposes a step missing protection device for a passenger conveyor for detecting whether a gap between adjacent steps is in a safe range before the steps are transferred to an exit. If the distance between adjacent steps is detected to exceed the allowed maximum safety gap, a command is issued to stop the operation of the passenger conveyor.
The step loss protection device for a passenger conveyor according to the present invention includes a sensor including a transmitting end and two receiving ends arranged side by side, the transmitting end and the receiving end being respectively arranged at both sides of a horizontal section of a truss of the passenger conveyor and facing each other, wherein the transmitting end and the receiving end are arranged at the same level below an upper surface of a step, and a controller. When the passenger conveyer operates, the transmitting end of the sensor transmits a signal to the receiving end, and if the two receiving ends simultaneously receive the signal transmitted by the transmitting end, the controller of the step loss protection device transmits a stop instruction to stop the passenger conveyer.
According to a preferred embodiment of the invention, the distance between the two receiving ends is larger than the maximum safety gap allowed between adjacent steps.
According to a preferred embodiment of the invention, the emitting and receiving ends of the sensor are located below the comb plate of the horizontal section of the truss of the passenger conveyor, whereby step missing can be detected before the steps move to the exit.
According to a preferred embodiment of the present invention, the step-missing protection device further comprises a bracket configured to be mounted to the truss of the passenger transportation device, the transmitting and receiving ends of the sensor being mounted to both sides of the truss by being mounted to the respective brackets, respectively, so as to facilitate retrofitting of the existing passenger transportation device.
According to a preferred embodiment of the present invention, each of the brackets of the step missing protection device includes a first adjustment bracket including a first mounting portion, an extension portion, and a second mounting portion, which are sequentially connected, the first mounting portion and the second mounting portion being respectively disposed at opposite sides of the extension portion and perpendicular to the extension portion, the first mounting portion being configured to be mounted on one side of the truss, the extension portion extending toward the step in a horizontal direction, the second adjustment bracket being mounted to the second mounting portion, and a transmitting end or a receiving end of the sensor being fixed to the second adjustment bracket.
According to a preferred embodiment of the present invention, the first mounting portion of the first adjustment bracket is provided with a first adjustment bolt and a second adjustment bolt penetrating the first mounting portion and the mounting member of the truss, the second adjustment bracket is provided with a third adjustment bolt and a fourth adjustment bolt penetrating the second adjustment bracket and the second mounting portion, and wherein: the first adjusting bolt and the second adjusting bolt are arranged side by side in the vertical direction, the third adjusting bolt and the fourth adjusting bolt are arranged side by side in the horizontal direction, or the first adjusting bolt and the second adjusting bolt are arranged side by side in the horizontal direction, and the third adjusting bolt and the fourth adjusting bolt are arranged side by side in the vertical direction.
According to a preferred embodiment of the invention, the distance between two adjusting bolts arranged side by side is greater than a predetermined threshold value, which predetermined threshold value depends on the size of the bracket. In this way, fine tuning of the position of the bracket and thus the flatness of the sensor can be achieved by adjusting the tightness of the bolts.
According to a preferred embodiment of the invention, the sensor is a light curtain sensor and the emitting end of the light curtain sensor emits a conical light ray, which light ray can range over two receiving ends without shielding.
According to a second aspect of the present invention there is provided a passenger transportation device, such as an escalator or a travelator, comprising a step-missing protection device as described above.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the following description will briefly explain the drawings of the embodiments of the present invention. Wherein the showings are for the purpose of illustrating some embodiments of the invention only and not for the purpose of limiting the same.
Fig. 1 shows the transmitting end of a sensor of a step missing protection device according to the invention from below the steps;
fig. 2 shows the receiving end of the sensor of the step missing protection device according to the invention from below the step;
fig. 3 shows the mounting position of the support of the step missing protection device according to the invention from above the steps with the comb plate removed;
FIG. 4 shows a bracket mounted to a truss of a passenger conveyor;
fig. 5 shows the stent of fig. 4 from another angle.
Detailed Description
In order to make the objects, technical solutions and advantages of the technical solutions of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments of the present invention. Like reference numerals in the drawings denote like parts. It should be noted that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present invention fall within the protection scope of the present invention.
Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The terms "first," "second," and the like in the description and in the claims, are not used for any order, quantity, or importance, but are used for distinguishing between different elements. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
The invention is described in detail below by way of description of example embodiments.
The step-missing protection device according to the present invention comprises a sensor comprising a transmitting end 11 and two receiving ends 12 arranged side by side and a controller. As shown in fig. 1 and 2, the transmitting end 11 of the sensor is disposed on the right side of the horizontal section of the truss of the passenger conveyor, and the two receiving ends 12 are disposed on the left side of the horizontal section of the truss facing each other. With reference to fig. 3, the emitting end 11 and the receiving end 12 of the sensor are located at the same level, respectively on both sides of the steps, immediately below the upper surface of the steps.
The sensor according to the invention is shown from above the steps in fig. 3, with the comb plate of the passenger conveyor removed in order to clearly show the mounting position of the sensor on the truss 4. In practice, the sensor of the step-missing protection device according to the invention is mounted under the comb plate of the escalator or moving walkway. The comb plate is a cover plate at the horizontal section at both ends of the truss of the escalator or the moving walkway, and is positioned at the outlet/inlet of the steps, and is a position where a passenger stands before stepping on the steps. When the steps move to the space below the comb plate, the upper surfaces of the steps adjacent to each other in front and rear are flush, i.e., come off the step exit to carry passengers. Here, the distance between the two steps should be within the maximum safety gap allowed, otherwise, if the gap between the steps is too large or even the steps are missing, the passenger may step empty, resulting in serious safety accidents.
The step missing protection device adopts a correlation sensor of 'one shot and two shot', so as to detect whether the gap between the steps which are about to leave an outlet is in a safe range, and once the gap is detected to be too large, a controller of the protection device sends out a stop instruction to stop the operation of the passenger transportation device. The "one-shot two-shot" sensor is a correlation sensor having a transmitting end 11 and two receiving ends 12, preferably a light curtain sensor. The two receiving ends 12 are arranged facing each other on both sides of the step at the same level as the transmitting end 11, the transmitting end 11 preferably being aligned exactly at the midpoint between the two receiving ends 12, and the distance between the two receiving ends 12 being slightly larger than the maximum safety gap allowed between adjacent steps to be provided to the passengers. The transmitting end 11 emits a conical light when the passenger conveyor is in operation, which light is able to cover both receiving ends 12 when not shielded. Therefore, when the gap between adjacent steps is smaller than the maximum safety gap allowed, the two receiving ends 12 cannot simultaneously receive the optical signals transmitted from the transmitting end 11. When the gap between adjacent steps is greater than the allowed maximum safety gap, the light signal emitted from the emitting end 11 will be received at the same time, and at this time, the controller of the step-missing protection device issues a stop command to stop the passenger conveyor, since the distance between the two receiving ends 12 is set to be slightly greater than the maximum safety gap. Because the sensor of step missing protection device sets up in the fishback below, consequently can detect clearance too big or step missing when the step has not moved the export yet to stop the motion of step immediately, this has effectively prevented that the passenger from stepping on the accident that the foot was taken in the elevator inside even, has improved passenger conveyor's security greatly.
Furthermore, in order to facilitate retrofitting the step-missing protection device to an existing passenger transportation device, it is preferred that the transmitting and receiving ends of the sensor are not directly mounted to the truss of the escalator or the travelator, but are provided with brackets, respectively. The bracket includes a first adjusting bracket 100 and a second adjusting bracket 200, and as can be seen from fig. 5, the first adjusting bracket 100 includes a first mounting portion 110, a second mounting portion 120, and an extension portion 130, the extension portion 130 being plate-shaped, the first mounting portion 110 and the second mounting portion 120 being disposed at opposite sides of the extension portion 130 and perpendicular to the extension portion 130, respectively. The first mounting portion 110 is configured to be mounted directly or indirectly through other mounting means to a side of the truss that is the side facing the steps such that when the bracket is mounted in place, the first mounting portion 110 is in close proximity to the truss in a vertical direction and the extension 130 extends in a horizontal direction towards the steps, the second mounting portion 120 being parallel to the first mounting portion 110 and spaced a distance from the first mounting portion 110, thereby providing a mounting space for the transmitting/receiving ends of the sensor. The second adjustment bracket 200 is mounted to the second mounting portion 120 of the first adjustment bracket 100, and the transmitting/receiving end of the sensor is fixed to the second adjustment bracket 200.
The mounting 41 of the two receiving ends 12 of the sensor to the truss by brackets is schematically shown in fig. 4 and 5. As can be seen from the figure, the second adjusting bracket 200 is provided with three mounting holes, two receiving ends 12 are respectively mounted into the mounting holes at both sides, and a middle mounting hole is located at a midpoint between the mounting holes at both sides, so it is conceivable that the transmitting end 11 may be mounted to a middle mounting hole of the same bracket. Therefore, different brackets are not required to be manufactured for the transmitting end and the receiving end respectively, and the production cost is reduced. Furthermore, as previously mentioned, the distance between the mounting holes on both sides should be slightly larger than the maximum safety gap allowed between adjacent steps below the comb plate.
The light curtain sensor has certain requirements on the flatness of the transmitting end and the receiving end, so the step missing protection device is further provided with a plurality of adjusting bolts which can finely adjust the position of the bracket. As shown in the drawing, the first mounting portion 110 of the first adjustment bracket 100 is provided with a first adjustment bolt 301 and a second adjustment bolt 302, and the first adjustment bolt 301 and the second adjustment bolt 302 are arranged side by side in the vertical direction, passing through the first mounting portion 110 and the mounting piece 41 of the truss. Thus, fine adjustment of the high and low positions of the bracket can be realized by loosening or tightening the first adjusting bolt and the second adjusting bolt. Similarly, on the second adjusting bracket 200, a third adjusting bolt 303 and a fourth adjusting bolt 304 penetrating the second mounting portion 120 of the second adjusting bracket 200 and the first adjusting bracket 100 are provided, the third adjusting bolt 303 and the fourth adjusting bolt 304 being arranged side by side in the horizontal direction, fine adjustment of the brackets in the horizontal direction being made possible by loosening or tightening the third and fourth adjusting bolts. Thereby, the positions of the transmitting end 11 and the receiving end 12 of the sensor are indirectly adjusted by adjusting the positions of the brackets, and mounting and manufacturing errors are compensated to a certain extent. It is conceivable to the person skilled in the art that in alternative embodiments, there are also opposite arrangements, for example a first adjustment bolt 301 and a second adjustment bolt 302 arranged side by side in the horizontal direction for achieving fine adjustment of the bracket in the horizontal direction; the third adjusting bolt 303 and the fourth adjusting bolt 304 are arranged side by side in the vertical direction and are used for realizing fine adjustment of the height position of the bracket.
Further, in order to ensure the effectiveness of the position adjustment of the bracket, it is also provided that for two adjustment bolts arranged side by side, the distance between the two bolts needs to be greater than a predetermined threshold value. For example, for the first and second adjusting bolts arranged side by side in the vertical direction, it may be provided that the distance between the first and second adjusting bolts needs to be greater than one third of the vertical height of the first mounting portion 110; for the third and fourth adjusting bolts arranged side by side in the horizontal direction, it may be provided that the distance between the third and fourth adjusting bolts is required to be greater than one third of the horizontal width of the second adjusting bracket 200. The predetermined threshold is not fixed and may be adjusted according to the material of the bracket and the size of the bolt.
Although the invention has been described in the specification and illustrated in the accompanying drawings on the basis of various embodiments, it will be understood by those skilled in the art that the above embodiments are merely preferred implementations, and that certain technical features in the embodiments may not be necessary to solve a particular technical problem so that these technical features may be omitted or omitted without affecting the solution of the technical problem or the formation of the technical solution; furthermore, the features, elements, and/or functions of one embodiment may be combined, or otherwise matched as appropriate with the features, elements, and/or functions of other one or more embodiments, unless such combination, or match is clearly impractical.
Claims (11)
1. A step missing protection device for a passenger conveyor, comprising a sensor and a controller, the sensor comprising a transmitting end and two receiving ends arranged side by side, the transmitting end and the receiving ends being arranged on both sides of a horizontal section of a truss of the passenger conveyor and facing each other, respectively, wherein the transmitting end and the receiving ends are arranged on the same level below an upper surface of a step,
when the passenger conveyer operates, the transmitting end of the sensor transmits a signal to the receiving end, and if the two receiving ends simultaneously receive the signal transmitted by the transmitting end, the controller transmits a stop instruction to stop the passenger conveyer.
2. The step loss protection device of claim 1 wherein the distance between the two receiving ends is greater than the maximum safety gap allowed between adjacent steps.
3. The step loss protection device of claim 1 wherein the transmitting and receiving ends of the sensor are located below a comb plate of a horizontal section of a truss of the passenger conveyor.
4. The step loss protection device of claim 1 further comprising brackets configured to be mounted to a truss of the passenger conveyor, the transmitting and receiving ends of the sensor being mounted to both sides of the truss by being mounted to respective brackets.
5. The step loss protection device of claim 4, wherein each bracket includes a first adjustment bracket including a first mounting portion, an extension portion, and a second mounting portion connected in sequence, the first and second mounting portions being disposed on opposite sides of the extension portion and perpendicular to the extension portion, respectively, the first mounting portion being configured to be mounted to one side of a truss, the extension portion extending in a horizontal direction toward a step, the second adjustment bracket being mounted to the second mounting portion, and the sensor being fixed to the second adjustment bracket.
6. The step missing protection device of claim 5, wherein the first mounting portion is provided with a first and a second adjustment bolt passing through the first and truss mounting members, the second adjustment bracket is provided with a third and a fourth adjustment bolt passing through the second adjustment bracket and the second mounting portion, and
the first adjusting bolt and the second adjusting bolt are arranged side by side in the vertical direction, the third adjusting bolt and the fourth adjusting bolt are arranged side by side in the horizontal direction, or
The first adjusting bolt and the second adjusting bolt are arranged side by side in the horizontal direction, and the third adjusting bolt and the fourth adjusting bolt are arranged side by side in the vertical direction.
7. The step loss protection device of claim 6 wherein a distance between two side-by-side arranged adjustment bolts is greater than a predetermined threshold, the predetermined threshold being dependent on a size of the bracket.
8. The step loss protection device of any preceding claim wherein the sensor is a light curtain sensor.
9. The step loss protection device of claim 8 wherein the emitting end of the light curtain sensor emits light in a conical shape.
10. A passenger transportation device comprising a step loss protection device according to any one of the preceding claims.
11. The passenger conveyor of claim 10, wherein the passenger conveyor is an escalator or an automated human-shaped walkway.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310501344.XA CN116715128A (en) | 2023-05-06 | 2023-05-06 | Step missing protection device and passenger transportation device comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310501344.XA CN116715128A (en) | 2023-05-06 | 2023-05-06 | Step missing protection device and passenger transportation device comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116715128A true CN116715128A (en) | 2023-09-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310501344.XA Pending CN116715128A (en) | 2023-05-06 | 2023-05-06 | Step missing protection device and passenger transportation device comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116715128A (en) |
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2023
- 2023-05-06 CN CN202310501344.XA patent/CN116715128A/en active Pending
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