An escalator with an entrance step-off monitoring structure

Abstract

The utility model is used in the technical field of escalator, disclose a kind of automatic escalator with entrance place boarding step empty step level monitoring structure, including escalator main body and comb tooth fixed plate, the comb tooth fixed plate is fixedly installed in the inner side of the lower end of escalator main body, and the inner side of the lower end of the escalator main body of the one side of comb tooth fixed plate is fixedly provided with comb tooth positioning plate.The automatic escalator with entrance place boarding step empty step level monitoring structure, by fixing photoelectric opposite emission probe in the inner side of the lower end of the escalator main body below comb tooth positioning plate, and being arranged in the edge of the intersection line of comb tooth plate and movable step, make monitoring position directly close to the transition area of passenger step, when the missing of movable step occurs, the opposite emission signal of both sides probe is connected instantaneously, compared with the proximity switch of traditional arrangement in return section, signal can be transmitted to main controller and escalator is stopped in the first time of step missing, effectively shorten detection response time, avoid the accident of step empty accident caused by stop stagnation.

Description

Technical Field

[0001] This utility model relates to the field of escalator technology, specifically an escalator with a step-missing detection structure at the entrance. Background Technology

[0002] During the operation of escalators, the transition area where passengers step from the fixed floor platform onto the moving steps is a critical safety point. Ideally, the steps should smoothly and continuously enter the platform. However, in actual operation, due to reasons such as missing steps during maintenance or step jamming, the steps may not be accurately positioned when entering the platform, creating a "stepping into the empty step" hazard. Passengers are prone to accidents such as stepping into the empty step, falling, or even being caught in the escalator. Currently, the step missing detection device of escalators is usually arranged in the return section of the drive station or turning station according to existing standards, and it must ensure that the operation stops before the step protrudes from the comb plate. Since the stopping distance of escalators is 0.2m-1.5m, the device generally needs to be arranged at least 1.5m away from the intersection of the comb plate and the step. Within this 1.5m distance, the step may get stuck and fall when passing through the escalator and the comb plate fixing plate, or it may be missing after maintenance and disassembly, creating a significant safety hazard. Traditional monitoring devices mostly use proximity switches, relying on the pulse interval when a step passes through to determine its absence. This is a form of "post-event protection," which is delayed and prone to false alarms due to small detection distances and difficulties in adjustment. For example, proximity switches may miss detections due to step misalignment or impacts from steps due to excessive proximity. They cannot monitor the state of the steps at the intersection of the comb plate in real time and accurately. In addition, while the assembly relationship between the comb plate fixing plate, comb plate positioning plate, and comb plate in existing escalator structures ensures the stability of the basic structure, it lacks an immediate monitoring mechanism for steps entering the comb plate area. Although the cooperation between the step wheel guide rail and the step guide wheel guides the steps, existing monitoring devices do not have sensors at the intersection of the comb plate, so they cannot trigger protection at the first moment when a step is missing. In summary, existing escalator monitoring for missing steps at the entrance suffers from problems such as delayed detection location, untimely response, and structural design not matching the needs of real-time monitoring. There is an urgent need to optimize the placement and structural design of the monitoring device to achieve real-time and accurate detection of missing steps. Utility Model Content

[0003] The purpose of this utility model is to provide an escalator with a step-miss detection structure at the entrance, so as to solve the problems mentioned in the background art, such as delayed detection position, untimely response, high false alarm rate, and structural design not matching the real-time monitoring requirements.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an escalator with an entrance step misstep monitoring structure, comprising an escalator body and a comb tooth fixing plate, wherein the comb tooth fixing plate is fixedly installed on the inner side of the lower end of the escalator body, and a comb tooth positioning plate is fixedly installed on the inner side of the lower end of the escalator body on one side of the comb tooth fixing plate; a comb tooth plate is fixedly installed on the inner side of the lower end of the escalator body between the comb tooth fixing plate and the comb tooth positioning plate; a protective support plate is fixedly installed inside the lower end of the escalator body below the comb tooth fixing plate, and guide rail side plates are fixedly installed at both ends of the protective support plate.

[0005] Preferably, a stepped wheel guide rail is fixedly installed on the outer surface of the guide rail side plate, and a stepped guide wheel is installed on the inner side of the stepped wheel guide rail. A movable stepped wheel is connected to one end of each stepped guide wheel facing each other.

[0006] Using the above technical solution, the step wheel guide rail and the step guide wheel form a sliding guide structure. The movable step runs smoothly along the step wheel guide rail through the step guide wheels on both sides. The guide rail side plate and the protective support plate jointly support the running trajectory of the step, preventing the movable step from falling due to the blockage of the ladder path, thus achieving the basic safety guarantee of "running guidance + structural support".

[0007] Preferably, the movable step and the step guide wheel are rotatably connected, and a gap is left between the outer surfaces of the guide rail side plates at both ends of the movable step.

[0008] Using the above technical solution, the movable steps achieve cyclic movement along the guide rail through a rotating connection. The gap design between the two ends and the side plates of the guide rail avoids friction and jamming between the steps and the side plates during operation, ensuring that the movable steps roll with the guide wheels without obstruction, reducing the risk of steps stopping or falling due to mechanical interference.

[0009] Preferably, a fixed bracket is fixedly installed on the inner side of the lower end of the escalator body below the comb positioning plate, and a probe is fixedly installed on the outer surface of the fixed bracket facing the movable step.

[0010] Using the above technical solution, the fixed bracket precisely fixes the probe below the comb tooth positioning plate, so that the probe is located at the edge of the intersection line between the comb tooth plate and the movable step. When the movable step is missing, the probe can immediately detect the change in the beam path and transmit the signal to the main controller to realize the monitoring of step loss.

[0011] Preferably, the comb tooth fixing plate and the comb tooth positioning plate are designed in a C-shape, and the outer surfaces of both ends of the comb tooth plate are in contact with the inner surfaces of the comb tooth fixing plates on both sides.

[0012] Using the above technical solution, the C-shaped structure provides a rigid assembly reference for the comb plate. The two ends of the comb plate are attached to the inner side of the comb fixing plate to ensure the meshing position accuracy between the comb plate and the movable step. At the same time, it provides a stable installation base for the fixed bracket and probe, avoiding detection deviations caused by structural displacement.

[0013] Preferably, the comb plate is inclined downward at one end, and the downward inclined end of the comb plate is arc-shaped.

[0014] By adopting the above technical solution, the inclined arc end of the comb plate smoothly transitions with the upper surface of the movable step, reducing the jerking sensation when passengers step on the stairs. At the same time, the arc design reduces the probability of the step getting stuck when entering the comb plate area. Combined with the monitoring structure, it further enhances the safety and comfort of the entrance area.

[0015] Preferably, the probes on both sides are arranged facing each other, and the probes are positioned directly opposite the movable step.

[0016] Using the above technical solution, the two probes face each other and form a photoelectric beam path to the movable step. When the movable step is running normally, it blocks the beam. When it is missing, the beam is instantly connected. It does not need to rely on pulse interval judgment to realize real-time monitoring of step missteps. Compared with traditional proximity switches, it responds more promptly and has no mechanical contact loss, reducing false alarm rate and maintenance costs.

[0017] Compared with the prior art, the beneficial effects of this utility model are: the escalator with a step misstep monitoring structure at the entrance: 1. By fixing the photoelectric beam probes to the inner side of the escalator body below the comb positioning plate and arranging them on both sides of the edge of the intersection line between the comb plate and the movable step, the monitoring position is directly close to the transition area of ​​the passenger step. When the movable step is missing, the beam signals of the probes on both sides are connected instantly. Compared with the traditional proximity switches arranged in the return section, the signal can be transmitted to the main controller and the escalator can be stopped at the first time the step is missing, which effectively shortens the detection response time and avoids the accident of stepping on the ground due to the stop. 2. The comb positioning plate and the comb fixing plate are fixed to the inner side of the lower end of the escalator body through a C-shaped design. The two ends of the comb plate fit against the inner side of the comb fixing plate to form a precise assembly reference. One end of the fixing bracket is connected to the comb positioning plate through a thread, and the other end is fixed with a probe to ensure the accuracy of the probe position relative to the intersection line of the comb plate and the step, so as to avoid missed detection due to step deviation or false alarm caused by improper distance adjustment. 3. A photoelectric beam detector is used to replace the traditional proximity switch. It uses the principle of beam blocking by the continuous operation of the ladder to monitor in real time. When a ladder is missing, the beam path is instantly connected. There is no need to rely on pulse interval timing, avoiding the lag of "post-event protection". At the same time, photoelectric detection has no mechanical contact, which can prevent sensor damage caused by ladder impact and reduce maintenance costs. 4. The protective support plate is fixed below the comb tooth fixing plate, and the two ends are connected to the guide rail side plates. The outer side of the guide rail side plate is equipped with the step wheel guide rail, and the inner side is rotatably connected to the movable step through the step guide wheel. This structure ensures that the movable step runs smoothly along the guide rail, reducing the risk of step falling due to ladder path obstruction. Together with the front-end photoelectric monitoring device, it forms a dual safety guarantee of "running guidance + real-time detection". 5. The comb plate adopts an arc design with one end tilted downwards, which makes the engagement with the moving steps smoother, further reducing the jerking sensation when passengers step on the stairs, and at the same time reducing the probability of the steps getting stuck when entering the comb plate area, and working with the photoelectric monitoring device to improve the safety of the entrance area. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall front view of the present invention; Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle; Figure 3 This is a schematic diagram of the overall side view structure of this utility model; Figure 4 This is a side view of the connection between the fixed bracket and the probe of this utility model.

[0019] In the diagram: 1. Escalator body; 2. Comb tooth fixing plate; 3. Comb tooth positioning plate; 4. Comb tooth plate; 5. Movable step; 6. Fixed bracket; 7. Probe; 8. Protective support plate; 9. Guide rail side plate; 10. Step wheel guide rail; 11. Step guide wheel. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-4 This utility model provides a technical solution: an escalator with an entrance step misstep monitoring structure.

[0022] Example 1: This example discloses: an escalator body 1 and a comb tooth fixing plate 2. The comb tooth fixing plate 2 is fixedly installed on the inner side of the lower end of the escalator body 1, and a comb tooth positioning plate 3 is fixedly installed on the inner side of the lower end of the escalator body 1 on one side of the comb tooth fixing plate 2. A comb tooth plate 4 is fixedly installed on the inner side of the lower end of the escalator body 1 between the comb tooth fixing plate 2 and the comb tooth positioning plate 3. A protective support plate 8 is fixedly installed inside the lower end of the escalator body 1 below the comb tooth fixing plate 2, and guide rail side plates 9 are fixedly installed at both ends of the protective support plate 8. A stepped wheel guide rail 10 is fixedly installed on the outer surface of the guide rail side plate 9, and a stepped guide wheel 11 is installed on the inner side of the stepped wheel guide rail 10. A movable step 5 is connected to one end of the stepped guide wheels 11 facing each other. The movable step 5 and the step guide wheel 11 are rotatably connected, and there is a gap between the outer surfaces of the guide rail side plates 9 at both ends of the movable step 5. The comb tooth fixing plate 2 and the comb tooth positioning plate 3 are designed in a C-shape, and the outer surfaces of both ends of the comb tooth plate 4 are in contact with the inner surfaces of the comb tooth fixing plates 2 on both sides. The comb plate 4 is inclined downward at one end, and the downward inclined end of the comb plate 4 is arc-shaped. A comb tooth fixing plate 2 is fixedly installed on the inner side of the lower end of the escalator body 1, and a comb tooth positioning plate 3 is set on one side of it. The two are designed in a C-shape and together clamp the comb tooth plate 4. The two ends of the comb tooth plate 4 are in contact with the inner side of the comb tooth fixing plate 2, and its lower end is an arc that slopes downward and smoothly meshes with the upper surface of the movable step 5. The comb tooth fixing plate 2 is connected to the guide rail side plate 9 through the protective support plate 8. The outer side of the guide rail side plate 9 is fixed with the step wheel guide rail 10, and the inner side is installed with the step guide wheel 11. The step guide wheel 11 is rotatably connected to both ends of the movable step 5, so that the movable step 5 can run smoothly along the step wheel guide rail 10. During normal operation, when the escalator is running, the movable step 5 moves cyclically along the step wheel guide rail 10 via the step guide wheel 11. The step wheel guide rail 10 is supported by the guide rail side plate 9, which is fixed to the escalator body 1 by the protective support plate 8 to ensure the stability of the step's running trajectory. The movable step 5 and the step guide wheel 11 are rotatably connected, and there is a gap between its two ends and the outer surface of the guide rail side plate 9 to avoid jamming during operation. The arc-shaped inclined end of the comb plate 4 guides the passenger's feet to smoothly transition from the fixed platform to the movable step 5, reducing the feeling of jerkiness when stepping on the escalator, and at the same time reducing the probability of jamming when the step enters the area of ​​the comb plate 4.

[0023] Example 2: This example discloses, based on Example 1, that a fixed bracket 6 is fixedly installed on the inner side of the lower end of the escalator body 1 below the comb positioning plate 3, and a probe 7 is fixedly installed on the outer surface of the fixed bracket 6 facing the movable step 5. The two probes 7 are set facing each other, and the probes 7 are set directly opposite the movable step 5; Inside the escalator body 1 below the comb positioning plate 3, probes 7 are installed facing each other via a fixed bracket 6. The probes 7 face the movable step 5 and are located on both sides of the edge of the intersection line between the comb plate 4 and the step. The probes 7 adopt the photoelectric beam principle: when the movable step 5 is running normally, the step body blocks the beam between the two probes 7, and the signal is disconnected. If the movable step 5 is missing, such as due to maintenance failure or obstruction during operation, the beam path is instantly connected, and the probes 7 immediately send an electrical signal to the main controller to trigger the escalator emergency stop. The C-shaped design of the comb tooth fixing plate 2 and the comb tooth positioning plate 3 provides a precise assembly reference for the comb tooth plate 4. At the same time, the fixing bracket 6 is connected to the comb tooth positioning plate 3 by threads to ensure the accuracy of the intersection line of the probe 7 position relative to the comb tooth plate 4, avoiding missed detection due to step misalignment or false alarm caused by improper distance adjustment. Compared with traditional proximity switches, the photoelectric beam probe 7 does not need to rely on the pulse interval of the step passage to judge, but directly monitors in real time through beam obstruction. The response time is shorter, and the signal can be triggered at the moment of step missing. Moreover, there is no mechanical contact, which prevents the sensor from being damaged by step impact and reduces maintenance costs. The structure consisting of the protective support plate 8, the guide rail side plate 9, and the step wheel guide rail 10 not only supports the smooth operation of the movable step 5 and reduces the risk of step falling, but also forms a dual protection mechanism of "running guidance + real-time detection" with the front probe 7. When a step is missing, the signal from the probe 7 is transmitted to the main controller. Combined with the escalator braking system, the machine can be stopped in an emergency before the step reaches the comb plate 4, avoiding the accident of stepping into the air caused by the braking stop at the traditional detection position.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An escalator with a step-miss detection structure at the entrance, comprising an escalator body (1) and a comb tooth fixing plate (2), wherein the comb tooth fixing plate (2) is fixedly installed on the inner side of the lower end of the escalator body (1), and a comb tooth positioning plate (3) is fixedly provided on the inner side of the lower end of the escalator body (1) on one side of the comb tooth fixing plate (2), and a comb tooth plate (4) is fixedly installed on the inner side of the lower end of the escalator body (1) between the comb tooth fixing plate (2) and the comb tooth positioning plate (3), characterized in that: A protective support plate (8) is fixedly installed inside the lower end of the escalator body (1) below the comb tooth fixing plate (2), and guide rail side plates (9) are fixedly installed at both ends of the protective support plate (8).

2. The escalator with a step-miss detection structure at the entrance as described in claim 1, characterized in that: The outer surface of the guide rail side plate (9) is fixedly installed with a step wheel guide rail (10), and a step guide wheel (11) is installed on the inner side of the step wheel guide rail (10). The two sides of the step guide wheel (11) are connected to a movable step (5) at the opposite end.

3. An escalator with a step-miss detection structure at the entrance, as described in claim 2, characterized in that: The movable step (5) is rotatably connected to the step guide wheel (11), and there is a gap between the outer surfaces of the guide rail side plates (9) at both ends of the movable step (5).

4. An escalator with a step-miss detection structure at the entrance, as described in claim 1, characterized in that: A fixed bracket (6) is fixedly installed on the inner side of the lower end of the escalator body (1) below the comb positioning plate (3), and a probe (7) is fixedly installed on the outer surface of the fixed bracket (6) facing the movable step (5).

5. An escalator with a step-miss detection structure at the entrance, as described in claim 1, characterized in that: The comb tooth fixing plate (2) and the comb tooth positioning plate (3) are designed in a C-shape, and the outer surfaces of both ends of the comb tooth plate (4) are in contact with the inner surfaces of the comb tooth fixing plates (2) on both sides.

6. An escalator with a step-miss detection structure at the entrance, as described in claim 1, characterized in that: The comb plate (4) is inclined downward at one end, and the downward inclined end of the comb plate (4) is arc-shaped.

7. An escalator with a step-miss detection structure at the entrance, as described in claim 4, characterized in that: The probes (7) on both sides are set facing each other, and the probes (7) are set directly opposite the movable step (5).

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