Human body skew induction graded braking protection device for escalator

Abstract

The invention discloses an escalator human body skew induction graded braking protection device which comprises a mounting plate, a driving assembly used for driving an escalator is mounted on the mounting plate, and a braking assembly used for braking the driving assembly is mounted at the position, corresponding to the driving assembly, of the mounting plate. An electronic speed regulator and a control assembly are further sequentially installed at the positions, corresponding to the driving assembly, of the installing plate, the driving assembly comprises a traction motor fixedly connected to the top of the installing plate, a traction shaft is installed on an output shaft of the traction motor, a traction roller is installed on the traction shaft, and the traction roller is connected with the driving assembly. And the end part of the traction shaft is fixedly connected with a brake disc. Through innovative structural design and intelligent control, accurate induction and graded braking of human body skew are achieved, powerful guarantee is provided for safe operation of the escalator, and the escalator skew sensing device has wide market application prospects and remarkable social benefits.

Description

Technical Field

[0001] This invention relates to the field of escalator braking technology, specifically to an escalator human tilt sensing and graded braking protection device. Background Technology

[0002] In the public transportation sector, escalators, as important vertical transportation equipment, are widely used in densely populated places such as shopping malls, subway stations, and hospitals. Their convenience and efficiency greatly enhance people's travel experience, but they also bring potential safety hazards.

[0003] In the prior art, such as an escalator with application publication number CN201411310Y, to cope with emergencies, a first emergency stop button and a second emergency stop button are installed at the upper and lower entrances of the escalator, respectively, and a third emergency stop button is set in the middle of the escalator. When an emergency occurs in the middle of the escalator, the operator can press the corresponding emergency stop button to stop the escalator in a timely and effective manner, thereby avoiding personal injury accidents.

[0004] However, in real-world use, especially in special locations like hospitals, passengers using escalators may have impaired balance due to pre-existing medical conditions, making them prone to tipping over during operation. Most existing escalators lack the ability to detect and brake tilting, significantly reducing safety and failing to effectively protect passengers' lives. Summary of the Invention

[0005] The purpose of this invention is to provide an escalator human tilt sensing and graded braking protection device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an escalator human tilt sensing and graded braking protection device, comprising a mounting plate, a drive component for driving the escalator mounted on the mounting plate, a braking component for braking the drive component mounted on the mounting plate and corresponding to the position of the drive component, and an electronic speed controller and a control component also sequentially mounted on the mounting plate and corresponding to the position of the drive component.

[0007] Optionally, the drive assembly includes a traction motor fixedly connected to the top of the mounting plate, a traction shaft mounted on the output shaft of the traction motor, a traction roller mounted on the traction shaft, and a brake disc fixedly connected to the end of the traction shaft.

[0008] Optionally, the braking assembly includes a mounting bracket fixedly connected to the top of the mounting plate, on which a braking structure one and further a braking structure two for braking the brake disc are mounted.

[0009] Optionally, the braking structure includes an electric cylinder fixedly connected to the mounting bracket, and a brake disc is fixedly connected to the output end of the electric cylinder.

[0010] Optionally, the second braking structure includes a brake frame that is fixedly and movably mounted on the mounting bracket, and brake pads are fixedly connected to the brake frame.

[0011] Optionally, limiting telescopic rods are fixedly connected to both sides of the bottom of the brake frame, and the other end of the limiting telescopic rods is fixedly connected to the side of the mounting frame.

[0012] Optionally, a transmission structure is installed on both sides of the mounting bracket at positions corresponding to the second braking structure.

[0013] Optionally, the transmission structure includes a mounting frame fixedly connected to the side of the mounting bracket, a fixed pulley rotatably mounted on the mounting frame, a steel wire rope wound on the fixed pulley, one end of the steel wire rope being fixedly connected to the side of the brake bracket, and the other end of the steel wire rope being fixedly connected to the side of the brake disc.

[0014] Optionally, the control component includes a PLC controller mounted on the mounting plate. The PLC controller is electrically connected to the electronic speed controller and the braking structure. An infrared distance sensor and a tilt sensor are connected to the side of the PLC controller via wires, and the infrared distance sensor and the tilt sensor are mounted on the escalator.

[0015] Optionally, a limiting component for limiting the traction shaft is installed on the mounting plate at a position corresponding to the drive component. The limiting component includes a limiting sleeve rotatably mounted on the traction shaft. The bottom of the limiting sleeve is fixedly connected to the top of the mounting plate, and the inner wall of the limiting sleeve is provided with limiting balls that are rotatably connected to the traction shaft.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. This invention provides an escalator human tilt sensing and graded braking protection device. By installing infrared distance sensors and tilt sensors on the escalator, it can accurately sense the passenger's standing posture and body tilt angle in real time, providing data support for graded braking. When the passenger's standing posture is tilted, the PLC controller first controls the electronic speed controller to reduce the escalator's running speed. If the passenger's tilt angle is large, while further reducing the speed, the electric cylinder drives the brake disc to initially brake the brake disc. Furthermore, the device utilizes steel wire ropes, fixed pulleys, and other structures to brake the other side of the brake disc with brake pads on the brake frame, achieving a double-sided braking effect. This device can take measures at the early stage of passenger tilt, effectively avoiding accidents such as falls and rolls, greatly improving the safety of escalators in various scenarios, especially in hospitals and other places with high safety requirements. It has broad market application prospects and social benefits.

[0018] 2. In this invention, infrared distance sensors and tilt sensors are installed on the escalator to detect passengers' posture and body tilt angle in real time and with high accuracy. These sensors can transmit the detected signals to the PLC controller in a timely manner, providing accurate data support for subsequent graded braking, thereby enabling timely detection of passengers' body tilt and preventing accidents caused by lack of detection.

[0019] 3. In this invention, when the PLC controller senses a passenger's tilted posture, it first controls the electronic speed controller to operate, thereby adjusting the speed of the traction motor and reducing the escalator's running speed. This staged braking method provides passengers with a certain buffer time, preventing them from falling due to sudden braking, and also preparing for more severe braking situations later. When a larger tilt angle is detected, the PLC controller, while controlling the electronic speed controller to further reduce the speed of the traction motor, also controls the electric cylinder to operate. The electric cylinder drives the brake disc closer to the brake disc at the end of the traction shaft, achieving initial braking of the brake disc.

[0020] 4. In this invention, during the movement of the brake disc driven by the traction shaft, the steel wire rope is stretched. Guided by the fixed pulley, the other end of the steel wire rope pulls the brake frame in the opposite direction, causing the brake pads on the brake frame to brake the other side of the brake disc. This design of simultaneously braking both sides of the brake disc greatly increases the braking effect, enabling faster and more effective emergency braking of the escalator and providing more reliable safety for passengers.

[0021] 5. In this invention, through the above-mentioned human body tilt sensing and graded braking functions, the protective device of this invention can take corresponding measures in the early stage when the passenger's body tilts, effectively avoiding serious accidents such as falls and rolling caused by the passenger's body imbalance, significantly improving the safety of escalators in various usage scenarios, and is especially suitable for places with high requirements for passenger safety such as hospitals. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the escalator human tilt sensing and graded braking protection device of the present invention; Figure 2 This is a schematic diagram of the drive component in the escalator human tilt sensing and graded braking protection device of the present invention; Figure 3 This is a schematic diagram of the braking component in the escalator human tilt sensing and graded braking protection device of the present invention; Figure 4 This is a schematic diagram of the braking structure one in the escalator human body tilt sensing and graded braking protection device of the present invention; Figure 5 This is a schematic diagram of the second braking structure in the escalator human body tilt sensing and graded braking protection device of the present invention; Figure 6 This is a schematic diagram of the transmission structure in the escalator human tilt sensing and graded braking protection device of the present invention; Figure 7 This is a schematic diagram of the control component in the escalator human tilt sensing and graded braking protection device of the present invention; Figure 8 This is a schematic diagram of the limiting component in the escalator human tilt sensing and graded braking protection device of the present invention.

[0023] In the picture: 1. Mounting plate; 2. Drive assembly; 3. Braking assembly; 4. Electronic speed governor; 5. Control assembly; 6. Limit assembly; 201. Traction motor; 2011. Traction shaft; 2012. Traction roller; 2013. Brake disc; 301. Mounting bracket; 3011. Braking structure one; 302, electric cylinder; 3021, brake disc; 303. Braking Structure Two; 3031. Brake frame; 3032. Brake pads; 304. Limiting telescopic rod; 305. Transmission structure; 3051, Mounting frame; 3052, Fixed pulley; 3053, Steel wire rope; 501, PLC controller; 5011, wires; 5012, infrared distance sensor; 5013, tilt sensor; 601, Limiting sleeve; 6011, Limiting ball. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Please see Figure 1-8 An escalator human body tilt sensing and graded braking protection device is provided, which consists of a mounting plate 1 and a drive component 2, a braking component 3, an electronic speed controller 4 and a control component 5 installed on the mounting plate 1. The components work together to sense the human body tilt during the operation of the escalator and brake it in stages to ensure passenger safety.

[0026] To achieve the driving function of the escalator, in this embodiment: a drive assembly 2 for escalator driving is installed on the mounting plate 1. The drive assembly 2 includes a traction motor 201 fixedly connected to the top of the mounting plate 1, a traction shaft 2011 mounted on the output shaft of the traction motor 201, a traction roller 2012 mounted on the traction shaft 2011, and a brake disc 2013 fixedly connected to the end of the traction shaft 2011. The traction motor 201, as a power source, drives the traction shaft 2011 to rotate through the output shaft, thereby causing the traction roller 2012 to rotate, driving the escalator track to run, and providing power support for the normal operation of the escalator.

[0027] To effectively brake the drive assembly 2, in this embodiment, a braking assembly 3 for braking the drive assembly 2 is installed on the mounting plate 1 at a position corresponding to the drive assembly 2. The braking assembly 3 includes a mounting bracket 301 fixedly connected to the top of the mounting plate 1. The mounting bracket 301 is equipped with a first braking structure 3011 and a second braking structure 303 for braking the brake disc 2013. By providing the first braking structure 3011 and the second braking structure 303, the brake disc 2013 can be braked from different directions, enhancing the braking effect and ensuring that the escalator can be quickly stopped in an emergency.

[0028] To achieve the braking function of the braking structure 3011, in this embodiment: the braking structure 3011 includes an electric cylinder 302 fixedly connected to the mounting bracket 301, and a brake disc 3021 fixedly connected to the output end of the electric cylinder 302. After receiving a control signal, the output end of the electric cylinder 302 can drive the brake disc 3021 to move, causing the brake disc 3021 to approach the brake disc 2013 and generate friction, thereby achieving the braking function. This braking method has a rapid response and can accurately control the braking force according to the control signal.

[0029] To achieve the braking function of the second braking structure 303, in this embodiment: the second braking structure 303 includes a brake frame 3031 fixedly and movably mounted on the mounting bracket 301, and a brake pad 3032 is fixedly connected to the brake frame 3031. The brake frame 3031 can move under the action of external force, driving the brake pad 3032 closer to the brake disc 2013, and working in conjunction with the first braking structure 3011 to apply braking force from the other side of the brake disc 2013, further improving the braking effect and ensuring that the escalator can stop quickly.

[0030] To limit the movement of the brake frame 3031 and ensure its stability and accuracy, in this embodiment, limiting telescopic rods 304 are fixedly connected to both sides of the bottom of the brake frame 3031, and the other end of the limiting telescopic rods 304 is fixedly connected to the side of the mounting bracket 301. The limiting telescopic rods 304 can guide and limit the movement of the brake frame 3031, preventing the brake frame 3031 from deviating and ensuring that the brake pads 3032 can accurately apply braking force to the brake disc 2013, thereby improving the reliability and stability of the brake assembly 3.

[0031] To achieve linkage between braking structure 3011 and braking structure 303, in this embodiment, a transmission structure 305 is installed on both sides of the mounting frame 301 at positions corresponding to braking structure 303. The transmission structure 305 includes a mounting frame 3051 fixedly connected to the side of the mounting frame 301. A fixed pulley 3052 is rotatably mounted on the mounting frame 3051. A steel wire rope 3053 is wound around the fixed pulley 3052, with one end of the steel wire rope 3053 fixedly connected to the side of the brake frame 3031 and the other end fixedly connected to the side of the brake disc 3021. When the brake disc 3021 moves under the action of the electric cylinder 302, it stretches the wire rope 3053. Under the guidance of the fixed pulley 3052, the other end of the wire rope 3053 pulls the brake frame 3031 to move in the opposite direction, thereby realizing the linkage between the first braking structure 3011 and the second braking structure 303, so that the brake disc 2013 is subjected to double braking force, which greatly enhances the braking effect.

[0032] To adjust the escalator's operating speed and control the operation of the braking assembly 3, in this embodiment, an electronic speed controller 4 and a control assembly 5 are sequentially installed on the mounting plate 1, corresponding to the position of the drive assembly 2. The control assembly 5 includes a PLC controller 501 mounted on the mounting plate 1. The PLC controller 501 is electrically connected to the electronic speed controller 4 and the braking structure 3011. An infrared distance sensor 5012 and a tilt sensor 5013 are connected to the side of the PLC controller 501 via wires 5011, and the infrared distance sensor 5012 and the tilt sensor 5013 are mounted on the escalator. The infrared distance sensor 5012 and the tilt sensor 5013 can monitor the passenger's standing posture and body tilt angle in real time and transmit the signals to the PLC controller 501. The PLC controller 501 analyzes and judges the received signals. When the passenger's standing posture is tilted, it controls the electronic speed controller 4 to adjust the speed of the traction motor 201 and reduce the escalator's running speed. When a large tilt angle is detected, while controlling the electronic speed controller 4 to further reduce the speed, it controls the electric cylinder 302 to operate, realizing graded braking, which improves the safety and intelligence of the escalator's operation. Specifically: 1. In this invention, the infrared distance sensor 5012 and the tilt sensor 5013 constitute a sensing module, and their detection accuracy is as follows: Infrared distance sensor 5012: With a detection accuracy of ±1cm, it can accurately measure the distance between a passenger and a specific position on the escalator, thereby determining the passenger's standing posture.

[0033] Tilt sensor 5013: With a detection accuracy of ±0.1°, it can accurately sense the tilt angle of the passenger's body, providing an accurate basis for judgment in graded braking.

[0034] 2. Staged braking parameters Tilt angle threshold: The tilt angle threshold for first-level braking is set to 5°-10°. When the passenger's body tilt angle is within this range, first-level braking is triggered. The tilt angle threshold for second-level braking is 10°-15°. When the tilt angle exceeds 10°, second-level braking is triggered.

[0035] Braking force gradient: During the first stage of braking, the electric cylinder 302 outputs a small braking force, resulting in a small friction between the brake disc 3021 and the brake disc 2013, with the braking force being 30%-50% of the normal braking force; during the second stage of braking, the electric cylinder 302 outputs a larger braking force, increasing the friction between the brake disc 3021 and the brake disc 2013, with the braking force being 70%-90% of the normal braking force.

[0036] 3. The linkage mechanism between sensor triggering and braking execution During normal operation of the escalator, the infrared distance sensor 5012 and tilt sensor 5013 installed on the escalator monitor the standing posture and body tilt angle of passengers in real time and transmit the signals to the PLC controller 501.

[0037] When the PLC controller 501 senses that the passenger's standing posture is tilted (the infrared distance sensor 5012 detects an abnormal distance) or the body tilt angle reaches the first-level braking tilt angle threshold (5°-10°), it controls the electronic speed controller 4 to operate, adjust the speed of the traction motor 201, reduce the escalator's running speed, and give the passenger a certain amount of adjustment time.

[0038] If the detected passenger tilt angle reaches the secondary braking tilt angle threshold (exceeding 10°), the PLC controller 501, while controlling the electronic speed controller 4 to further reduce the speed of the traction motor 201, also controls the operation of the electric cylinder 302. The output end of the electric cylinder 302 drives the brake disc 3021 to approach the brake disc 2013 at the end of the traction shaft 2011, initially braking the brake disc 2013. As the traction shaft 2011 moves the brake disc 2013, the brake disc 3021 stretches the wire rope 3053. Under the guidance of the fixed pulley 3052, the other end of the wire rope 3053 pulls the brake frame 3031 to move in the opposite direction, causing the brake pads 3032 on the brake frame 3031 to brake the other side of the brake disc 2013. By simultaneously braking both sides of the brake disc 2013, the braking effect is enhanced, achieving emergency braking of the escalator.

[0039] 4. Mis-triggered avoidance plan Data filtering: The PLC controller 501 filters the data transmitted by the infrared distance sensor 5012 and the tilt sensor 5013 to remove abnormal data caused by external interference (such as escalator vibration, brief swaying of passengers, etc.), improve data accuracy, and reduce the probability of false triggering.

[0040] Multiple sampling judgment: When determining whether to trigger braking, the PLC controller 501 performs multiple samplings. Only when the passenger tilt angle is detected to exceed the set threshold multiple times consecutively is it determined to be a real tilt situation and the corresponding braking measures are triggered to avoid false triggering due to a single abnormal data.

[0041] Set a delay time: When the passenger tilt angle is detected to be close to the threshold, a certain delay time (such as 1-2 seconds) is set. If the tilt angle returns to normal within the delay time, the braking will not be triggered; if the tilt angle continues to exceed the threshold, the braking will be triggered to further reduce false triggering.

[0042] By adopting the above technical solutions—precise sensing modules and reasonable graded braking parameters, combined with a sound linkage mechanism and false trigger avoidance scheme—the system can accurately sense passenger status, achieve graded braking, ensure passenger safety, and avoid false triggering that could affect the normal operation of the escalator.

[0043] To limit the movement of the traction shaft 2011 and prevent it from swaying during operation, thus ensuring the stability of the escalator, in this embodiment, a limiting component 6 for limiting the traction shaft 2011 is installed on the mounting plate 1 at a position corresponding to the drive assembly 2. The limiting component 6 includes a limiting sleeve 601 rotatably mounted on the traction shaft 2011. The bottom of the limiting sleeve 601 is fixedly connected to the top of the mounting plate 1, and the inner wall of the limiting sleeve 601 is provided with limiting balls 6011 that are rollably connected to the traction shaft 2011. The limiting sleeve 601 restricts the radial movement of the traction shaft 2011, while the limiting balls 6011 reduce the friction between the traction shaft 2011 and the limiting sleeve 601, allowing the traction shaft 2011 to rotate smoothly. This ensures the stability of the escalator operation and reduces energy consumption.

[0044] When using: During normal operation of the escalator, the traction motor 201 drives the traction shaft 2011 to rotate through the output shaft, and the traction roller 2012 on the traction shaft 2011 drives the escalator track to run. At the same time, the infrared distance sensor 5012 and the tilt sensor 5013 installed on the escalator monitor the standing posture and body tilt angle of the passengers in real time and transmit the signals to the PLC controller 501.

[0045] When the PLC controller 501 senses that the passenger's standing posture is tilted (the infrared distance sensor 5012 detects an abnormal distance) or the body tilt angle reaches the first-level braking tilt angle threshold (5°-10°), it controls the electronic speed controller 4 to operate, adjust the speed of the traction motor 201, reduce the escalator's running speed, and give the passenger a certain amount of adjustment time.

[0046] If the detected passenger tilt angle reaches the secondary braking tilt angle threshold (exceeding 10°), the PLC controller 501, while controlling the electronic speed controller 4 to further reduce the speed of the traction motor 201, also controls the operation of the electric cylinder 302. The output end of the electric cylinder 302 drives the brake disc 3021 to approach the brake disc 2013 at the end of the traction shaft 2011, initially braking the brake disc 2013. As the traction shaft 2011 moves the brake disc 2013, the brake disc 3021 stretches the wire rope 3053. Under the guidance of the fixed pulley 3052, the other end of the wire rope 3053 pulls the brake frame 3031 to move in the opposite direction, causing the brake pads 3032 on the brake frame 3031 to brake the other side of the brake disc 2013. By simultaneously braking both sides of the brake disc 2013, the braking effect is enhanced, achieving emergency braking of the escalator and ensuring passenger safety.

[0047] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A human tilt sensing and graded braking protection device for escalators, comprising a mounting plate (1), characterized in that: A drive assembly (2) for driving the escalator is installed on the mounting plate (1). A braking assembly (3) for braking the drive assembly (2) is installed on the mounting plate (1) and at the position corresponding to the drive assembly (2). An electronic speed controller (4) and a control assembly (5) are also installed on the mounting plate (1) and at the position corresponding to the drive assembly (2). The drive assembly (2) includes a traction motor (201) fixedly connected to the top of the mounting plate (1), a traction shaft (2011) is mounted on the output shaft of the traction motor (201), a traction roller (2012) is mounted on the traction shaft (2011), and a brake disc (2013) is fixedly connected to the end of the traction shaft (2011). The braking assembly (3) includes a mounting bracket (301) fixedly connected to the top of the mounting plate (1), and a braking structure one (3011) and a braking structure two (303) for braking the brake disc (2013) are mounted on the mounting bracket (301). The control component (5) includes a PLC controller (501) mounted on the mounting plate (1). The PLC controller (501) is electrically connected to the electronic speed controller (4) and the braking structure (3011). An infrared distance sensor (5012) and an inclination sensor (5013) are connected to the side of the PLC controller (501) via wires (5011). The infrared distance sensor (5012) and the inclination sensor (5013) are mounted on the escalator.

2. The escalator human tilt sensing and graded braking protection device according to claim 1, characterized in that: The braking structure (3011) includes an electric cylinder (302) fixedly connected to the mounting bracket (301), and a brake disc (3021) is fixedly connected to the output end of the electric cylinder (302).

3. The escalator human tilt sensing and graded braking protection device according to claim 2, characterized in that: The second braking structure (303) includes a brake frame (3031) fixedly and movably mounted on the mounting bracket (301), and a brake pad (3032) is fixedly connected to the brake frame (3031).

4. The escalator human tilt sensing and graded braking protection device according to claim 3, characterized in that: Both sides of the bottom of the brake frame (3031) are fixedly connected to limit telescopic rods (304), and the other end of the limit telescopic rods (304) is fixedly connected to the side of the mounting frame (301).

5. The escalator human tilt sensing and graded braking protection device according to claim 4, characterized in that: A transmission structure (305) is installed on both sides of the mounting bracket (301) at a position corresponding to the second braking structure (303).

6. The escalator human tilt sensing and graded braking protection device according to claim 5, characterized in that: The transmission structure (305) includes a mounting frame (3051) fixedly connected to the side of the mounting bracket (301), a fixed pulley (3052) rotatably mounted on the mounting frame (3051), a steel wire rope (3053) wound on the fixed pulley (3052), one end of the steel wire rope (3053) being fixedly connected to the side of the brake bracket (3031), and the other end of the steel wire rope (3053) being fixedly connected to the side of the brake disc (3021).

7. The escalator human tilt sensing and graded braking protection device according to claim 6, characterized in that: A limiting component (6) for limiting the traction shaft (2011) is installed on the mounting plate (1) at a position corresponding to the drive component (2). The limiting component (6) includes a limiting sleeve (601) rotatably mounted on the traction shaft (2011). The bottom of the limiting sleeve (601) is fixedly connected to the top of the mounting plate (1), and a limiting ball (6011) that is tactilely connected to the traction shaft (2011) is provided on the inner wall of the limiting sleeve (601).

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