Escalator safety device and escalator

Abstract

The present invention discloses an escalator safety device, comprising: a connecting device, used to connect the comb plate of the escalator to the step chain of the escalator, so that the comb plate and the step chain are linked; a safety switch, arranged near the comb plate; and a control device, used to control the start and stop of the escalator. When the escalator is accidentally started, the step chain drives the comb plate to move to a trigger position to trigger the safety switch; when the safety switch is triggered, the control device controls the escalator to stop immediately, thereby effectively protecting the life safety of the escalator maintenance personnel and improving the safety of the escalator.

Description

Technical Field

[0001] The invention relates to an escalator safety device and an escalator comprising the escalator safety device. Background Art

[0002] There are many parts installed inside the upper drive side plate device of the escalator. If it is necessary to test the escalator operation, replace the friction wheel, check the handrail drive or adjust the comb plate, the worker needs to remove the steps and stand in the space between the steps and the comb plate, so as to facilitate observation, maintenance and replacement of parts. On the other hand, it is very dangerous for workers to work in this position. In recent years, many serious accidents have occurred in this area. During the maintenance process, the escalator was mistakenly activated (started). If this happens, it will be fatal. The maintenance worker will be squeezed or sheared by the steps and comb plates, causing serious casualties. Although many safety measures have been required to be implemented, such as using safety switches, cutting off the power or safety pins, such fatal accidents still occur from time to time. The main reason is that there may be communication problems between maintenance personnel. The person who turns on the power to start the escalator may not know that there are other maintenance personnel in the upper drive. And the people working in this space are not aware that someone will start the escalator. Summary of the invention

[0003] The purpose of the present invention is to solve at least one aspect of the above-mentioned problems and defects in the prior art.

[0004] According to one aspect of the present invention, there is provided an escalator safety device, comprising: a connecting device for connecting a comb plate of the escalator to a step chain of the escalator so that the comb plate and the step chain are linked; a safety switch, arranged near the comb plate; and a control device for controlling the start and stop of the escalator. When the escalator is accidentally started, the step chain drives the comb plate to move to a trigger position to trigger the safety switch; when the safety switch is triggered, the control device controls the escalator to stop immediately.

[0005] According to an exemplary embodiment of the present invention, the escalator safety device also includes a mechanical limit device installed on the truss of the escalator; when the comb plate moves to a position in contact with the mechanical limit device, the mechanical limit device prevents the comb plate from continuing to move to force the escalator to stop.

[0006] According to another exemplary embodiment of the present invention, the connecting device is suitable for being detachably connected to the step chain and the comb plate of the escalator.

[0007] According to another exemplary embodiment of the present invention, the connecting device is used to connect a link unit of the step chain of the escalator to the comb plate of the escalator.

[0008] According to another exemplary embodiment of the present invention, the link unit includes a pair of inner link plates and a pair of outer link plates, and the connecting device is used to connect the pair of inner link plates and / or the pair of outer link plates of the link unit to the comb plates of the escalator.

[0009] According to another exemplary embodiment of the present invention, the connecting device includes two sets of connecting components, and a pair of inner link plates and a pair of outer link plates of the link unit are connected to the comb plates of the escalator through a set of connecting components respectively.

[0010] According to another exemplary embodiment of the present invention, each set of the connecting components includes a first connecting member and a second connecting member, the first connecting member is connected to the comb plate, the second connecting member is connected to the pair of inner link plates or the pair of outer link plates, and the lower end of the first connecting member is connected to one end of the second connecting member.

[0011] According to another exemplary embodiment of the present invention, the upper end of the first connecting member is suitable for being threadedly connected to a threaded hole on the comb plate.

[0012] According to another exemplary embodiment of the present invention, the second connecting member includes a screw rod, which passes through the pair of inner link plates or the pair of outer link plates and is fixed to the pair of inner link plates or the pair of outer link plates by a pair of nuts threadedly connected to the screw rod.

[0013] According to another exemplary embodiment of the present invention, the second connecting member also includes a ring-shaped end portion located at one end of the screw rod, a socket or a threaded hole is formed on the ring-shaped end portion, and the lower end of the first connecting member is suitable for being inserted into the socket of the ring-shaped end portion or being threadedly connected to the threaded hole of the ring-shaped end portion.

[0014] According to another exemplary embodiment of the present invention, the first connecting member is rod-shaped and extends in a vertical direction perpendicular to the comb plate; the screw rod of the second connecting member extends in a horizontal direction perpendicular to the first connecting member.

[0015] According to another aspect of the present invention, there is provided an escalator comprising the escalator safety device described above.

[0016] In the above exemplary embodiments of the present invention, the comb plate of the escalator is connected to the step chain of the escalator by a connecting device, so that the comb plate and the step chain are linked. Therefore, once the escalator is accidentally started, the step chain drives the comb plate to move together, and the movement of the comb plate triggers the safety switch to stop the escalator, thereby effectively protecting the life safety of the escalator maintenance personnel and improving the safety of the escalator.

[0017] Other objects and advantages of the present invention will become apparent from the following description of the present invention with reference to the accompanying drawings, which will help to provide a comprehensive understanding of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A perspective schematic diagram showing an escalator according to an exemplary embodiment of the present invention;

[0019] Figure 2 A perspective schematic diagram showing a connecting device of an escalator safety device according to an exemplary embodiment of the present invention as viewed from one side;

[0020] Figure 3 A perspective schematic diagram showing a connecting device of an escalator safety device according to an exemplary embodiment of the present invention as viewed from the bottom side;

[0021] Figure 4 A front view showing a connecting device of an escalator safety device according to an exemplary embodiment of the present invention. DETAILED DESCRIPTION

[0022] The technical solution of the present invention is further specifically described below by examples and in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals indicate the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the overall inventive concept of the present invention and should not be construed as a limitation of the present invention.

[0023] In addition, in the detailed description below, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the disclosed embodiments. However, it is apparent that one or more embodiments may be implemented without these specific details. In other cases, known structures and devices are embodied in a schematic manner to simplify the accompanying drawings.

[0024] According to an overall technical concept of the present invention, an escalator safety device is provided, comprising: a connecting device for connecting a comb plate of an escalator to a step chain of the escalator so that the comb plate and the step chain are linked; a safety switch, arranged near the comb plate; and a control device for controlling the start and stop of the escalator. When the escalator is accidentally started, the step chain drives the comb plate to move to a trigger position to trigger the safety switch; when the safety switch is triggered, the control device controls the escalator to stop immediately.

[0025] Figure 1 A schematic perspective view of an escalator according to an exemplary embodiment of the present invention is shown. Figure 2 A perspective schematic diagram showing a connecting device of an escalator safety device according to an exemplary embodiment of the present invention as viewed from one side.

[0026] like Figure 1 and Figure 2 As shown, in the illustrated embodiment, the escalator safety device mainly includes: connecting devices 410, 420, 430, a safety switch (not shown) and a control device (not shown). The connecting devices 410, 420, 430 are used to connect the comb plate 100 of the escalator to the step chain 300 of the escalator, so that the comb plate 100 and the step chain 300 are linked. The safety switch is arranged near the comb plate 100. The control device is used to control the start and stop of the escalator.

[0027] like Figure 1 and Figure 2 As shown, in the embodiment shown in the figure, since the comb plate 100 of the escalator is connected to the step chain 300 of the escalator, when the escalator is accidentally started, the step chain 300 will drive the comb plate 100 to move to the trigger position. At this time, the comb plate 100 triggers the safety switch. Once the safety switch is triggered, the control device will control the escalator to stop immediately.

[0028] Figure 3 A perspective schematic diagram showing a connecting device of an escalator safety device according to an exemplary embodiment of the present invention as viewed from the bottom side; Figure 4 A front view showing a connecting device of an escalator safety device according to an exemplary embodiment of the present invention.

[0029] like Figures 1 to 4 As shown, in the illustrated embodiment, the escalator safety device also includes a mechanical stopper (not shown) installed on the truss of the escalator. When the comb plate 100 moves to a position in contact with the mechanical stopper, the mechanical stopper prevents the comb plate 100 from moving further to force the escalator to stop.

[0030] like Figures 1 to 4 As shown, in the illustrated embodiment, the connecting devices 410, 420, 430 are suitable for being detachably connected to the step chain 300 and the comb plate 100 of the escalator. In this way, it is convenient for maintenance personnel to disassemble and assemble on site.

[0031] like Figures 1 to 4 As shown, in the illustrated embodiment, the connecting devices 410, 420, 430 are used to connect a link unit of the step chain 300 of the escalator to the comb plate 100 of the escalator.

[0032] like Figures 1 to 4 As shown, in the illustrated embodiment, the link unit comprises a pair of inner link plates 310 and a pair of outer link plates 320. The connecting devices 410, 420, 430 are used to connect the pair of inner link plates 310 and / or the pair of outer link plates 320 of the link unit to the comb plate 100 of the escalator.

[0033] like Figures 1 to 4 As shown, in the illustrated embodiment, the connecting devices 410, 420, 430 include two sets of connecting components. A pair of inner link plates 310 and a pair of outer link plates 320 of the link unit are connected to the comb plates 100 of the escalator through a set of connecting components.

[0034] like Figures 1 to 4 As shown, in the illustrated embodiment, each set of connecting components includes a first connecting member 410 and a second connecting member 420. The first connecting member 410 is connected to the comb plate 100, and the second connecting member 420 is connected to a pair of inner link plates 310 or a pair of outer link plates 320. The lower end of the first connecting member 410 is connected to one end of the second connecting member 420.

[0035] like Figures 1 to 4 As shown, in the illustrated embodiment, the upper end of the first connecting member 410 is suitable for being threadedly connected to the threaded hole on the comb plate 100. The second connecting member 420 includes a screw rod 421. The screw rod 421 passes through a pair of inner link plates 310 or a pair of outer link plates 320, and is fixed to the pair of inner link plates 310 or the pair of outer link plates 320 by a pair of nuts 430 threadedly connected to the screw rod 421.

[0036] like Figures 1 to 4 As shown, in the illustrated embodiment, the second connecting member 420 further includes a ring-shaped end portion 422 located at one end of the screw rod 421. An insertion hole or a threaded hole is formed on the ring-shaped end portion 422. The lower end of the first connecting member 410 is suitable for being inserted into the insertion hole of the ring-shaped end portion 422 or being threadedly connected to the threaded hole of the ring-shaped end portion 422.

[0037] like Figures 1 to 4 As shown, in the illustrated embodiment, the first connecting member 410 is rod-shaped and extends in a vertical direction perpendicular to the comb plate 100 ; the screw rod 421 of the second connecting member 420 extends in a horizontal direction perpendicular to the first connecting member 410 .

[0038] In another exemplary embodiment of the present invention, an escalator is also disclosed, comprising the above-mentioned escalator safety device.

[0039] In one embodiment of the present invention, the maintenance worker enters Figure 1 When the escalator enters the space between the comb plate 100 and the step 200, the escalator first connects the comb plate 100 of the escalator to the step chain 300 of the escalator using the aforementioned connecting devices 410, 420, 430, and then enters the space between the comb plate 100 and the step 200 to perform maintenance work. After completing the maintenance work, the maintenance worker leaves the space between the comb plate 100 and the step 200 and removes the aforementioned connecting devices 410, 420, 430 so that the escalator can start normally.

[0040] Those skilled in the art can understand that the embodiments described above are exemplary and can be improved by those skilled in the art. The structures described in various embodiments can be freely combined without causing conflicts in structure or principle.

[0041] Although the present invention has been described in conjunction with the accompanying drawings, the embodiments disclosed in the accompanying drawings are intended to exemplify the preferred implementations of the present invention and should not be construed as limiting the present invention.

[0042] Although some embodiments of the present general inventive concept have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the present general inventive concept, the scope of which is defined by the claims and their equivalents.

[0043] It should be noted that the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. In addition, any element reference signs in the claims shall not be construed as limiting the scope of the present invention.

Claims

1. An escalator safety device, characterized in that: include: A connecting device (410, 420, 430) is used to connect the escalator comb plate (100) to the escalator step chain (300) when a maintenance worker enters the space between the escalator comb plate (100) and the step (200), so that the comb plate (100) and the step chain (300) are linked; A safety switch, arranged near the comb plate (100); and A control device for controlling the start and stop of the escalator, When the escalator is accidentally started, the step chain (300) drives the comb plate (100) to move to a triggering position to trigger the safety switch. When the safety switch is triggered, the control device controls the escalator to stop immediately.

2. The escalator safety device according to claim 1, characterized in that: The escalator safety device also includes a mechanical limit device installed on the truss of the escalator. When the comb plate (100) moves to a position where it contacts the mechanical limiting device, the mechanical limiting device prevents the comb plate (100) from continuing to move, thereby forcing the escalator to stop.

3. The escalator safety device according to claim 1 or 2, characterized in that: The connecting device (410, 420, 430) is detachably connected to the step chain (300) and the comb plate (100) of the escalator.

4. The escalator safety device according to claim 3, characterized in that: The connecting device (410, 420, 430) is used to connect a link unit of the step chain (300) of the escalator to the comb plate (100) of the escalator.

5. The escalator safety device according to claim 4, characterized in that: The link unit comprises a pair of inner link plates (310) and a pair of outer link plates (320), and the connecting device (410, 420, 430) is used to connect the pair of inner link plates (310) and / or the pair of outer link plates (320) of the link unit to the comb plate (100) of the escalator.

6. The escalator safety device according to claim 5, characterized in that: The connection device (410, 420, 430) comprises two sets of connection components, and a pair of inner chain plates (310) and a pair of outer chain plates (320) of the chain link unit are respectively connected to the comb plate (100) of the escalator through a set of connection components.

7. The escalator safety device according to claim 6, characterized in that: Each set of the connection components comprises a first connection member (410) and a second connection member (420), wherein the first connection member (410) is connected to the comb plate (100), and the second connection member (420) is connected to the pair of inner link plates (310) or the pair of outer link plates (320), and the lower end of the first connection member (410) is connected to one end of the second connection member (420).

8. The escalator safety device according to claim 7, characterized in that: The upper end of the first connecting member (410) is suitable for being threadedly connected to a threaded hole on the comb plate (100).

9. The escalator safety device according to claim 8, characterized in that: The second connecting member (420) comprises a screw rod (421), wherein the screw rod (421) passes through the pair of inner link plates (310) or the pair of outer link plates (320), and is fixed to the pair of inner link plates (310) or the pair of outer link plates (320) via a pair of nuts (430) threadedly connected to the screw rod (421).

10. The escalator safety device according to claim 9, characterized in that: The second connecting member (420) further comprises a ring-shaped end portion (422) located at one end of the screw rod (421), and a plug hole or a threaded hole is formed on the ring-shaped end portion (422). The lower end of the first connecting member (410) is inserted into the insertion hole of the eye-shaped end portion (422) or is threadedly connected to the threaded hole of the eye-shaped end portion (422).

11. The escalator safety device according to claim 10, characterized in that: The first connecting member (410) is in the shape of a rod and extends in a vertical direction perpendicular to the comb plate (100); The screw rod (421) of the second connecting member (420) extends along a horizontal direction perpendicular to the first connecting member (410).

12. An escalator, characterized in that: The escalator safety device comprises any one of claims 1-11.

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