Elevator landing door plate missing or accidental falling protection system

Abstract

The invention discloses an elevator landing door plate missing or accidental falling protection system which comprises an elevator control system, a plurality of detection devices arranged in an elevator shaft, detection switches arranged on landing door sills of all floors, and a buzzer, an emergency lamp, a left infrared sensor and a right infrared sensor which are arranged on a car door. The detection switches are arranged corresponding to closed door slots of floor doors, the detection devices correspond to the floor doors respectively, the detection switches on sill sills of the floor doors are connected with the corresponding detection devices, the detection devices are used for detecting whether the corresponding floor doors are in normal positions or not, and the MCU communicates with an elevator control system through a CAN. And the elevator control system is respectively connected with a buzzer, an emergency lamp, the left infrared sensor and the right infrared sensor on the car door. When the elevator landing door plate is lost or accidentally falls off, corresponding protection measures can be started, and personnel can be prevented from falling into a pit and human body shearing accidents can be avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of elevator safety, and in particular to a protection system for elevator door panels that are missing or accidentally fall off. Background Art

[0002] The elevator floor door panel is hit during use or the installation components are not in place, resulting in the door panel falling off or missing door panels during installation. When the floor door panel is missing or falls off, a hole appears in the floor door. It is easy for people to fall into the elevator shaft from the hole to the bottom pit and cause casualties. There have been many accidents. Children or adults enter unconsciously, or enter the hole in poor light at night or drunk. This accident mainly occurs because the current elevator is designed with electrical door circuit detection. When the floor door panel falls off or is missing, the electrical door circuit is disconnected, and the elevator stops running due to a fault. This accident is easy to occur when the position where the car stops is not the same floor as the floor door hole. Moreover, in the current center split double fold design, the electrical safety circuit can only detect the shutter. The slow door and the shutter are connected by an anti-tripping structure, but there is still a possibility of falling off after impact. In this case, the elevator will not even stop due to a fault, and the elevator can still operate normally. At this time, there is a hole in the slow door on the floor, and there will be a human shearing accident, which is a very dangerous state. In order to prevent this accident, it is necessary to provide a protection solution for the missing or accidental falling of the elevator floor door panel. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a protection system for elevator floor door panels that are missing or accidentally fall off.

[0004] The technical solution of the present invention is as follows:

[0005] A protection system for missing or accidental falling off of elevator door panels, comprising an elevator control system, a plurality of detection devices arranged in an elevator shaft, a detection switch arranged on the sill of each floor door, and a buzzer, an emergency light, a left infrared sensor and a right infrared sensor arranged on a car door, wherein the detection switch is arranged corresponding to the closed door gap of the floor door, the plurality of detection devices respectively correspond to each floor door, and the detection switch on the sill of each floor door is connected to the corresponding detection device, the detection device is used to detect whether the corresponding floor door is in a normal position, and its MCU communicates with the elevator control system via CAN, and the elevator control system is respectively connected to the buzzer, the emergency light, the left infrared sensor and the right infrared sensor on the car door.

[0006] When the door panel of a floor is not in the normal position, the corresponding detection device will feed back to the elevator control system. After receiving the signal, the elevator control system will shield the electrical door circuit detection and control the car to move to the empty layer of the corresponding floor door at a speed of 0.1m / s, and block the empty layer of the floor door with the car door to prevent people from falling into the pit.

[0007] When the car approaches the position of the landing door opening, the elevator control system controls the emergency light to turn on and receives the signals from the left infrared sensor and the right infrared sensor until it reaches the leveling position of the landing door opening. Then the elevator stops running, stops receiving the signals from the left and right infrared sensors, and keeps the emergency light on.

[0008] During the process of the car moving to the leveling position of the landing door opening, if the left and right infrared sensors detect an object around the landing door opening, the elevator control system controls the car to stop moving and turns on the buzzer. The buzzer emits a beep. When the object at the landing door opening moves away, the buzzer stops beeping, and the car continues to move to the leveling position of the landing door opening at a speed of 0.1 m / s.

[0009] Compared with the prior art, the beneficial effects of the present invention are as follows: A protection system for elevator landing door panels missing or accidentally falling off provided by the present invention will initiate corresponding protection measures when the elevator landing door panels are missing or accidentally fall off, which can avoid the occurrence of personnel falling into the pit and prevent the occurrence of human shearing accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0011] Figure 1 It is a system block diagram of a protection system for elevator landing door panels missing or accidentally falling off provided by the present invention;

[0012] Figure 2 It is a circuit schematic diagram of a protection system for elevator landing door panels missing or accidentally falling off provided by the present invention;

[0013] Figure 3 It is a structural schematic diagram of a protection system for elevator landing door panels missing or accidentally falling off provided by the present invention;

[0014] Figure 4 It is an installation schematic diagram of the detection switch of the middle landing door in the present invention;

[0015] Figure 5 It is an installation schematic diagram of the detection switch of the middle double-fold landing door in the present invention;

[0016] Figure 6 It is a schematic diagram of the landing door sill of the traditional structure;

[0017] Figure 7 It is a schematic diagram of the landing door sill of the present invention. Detailed implementation manners

[0018] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0019] In order to illustrate the technical solutions described in the present invention, the following will be described through specific embodiments.

[0020] Embodiment

[0021] Please refer to Figures 1 to 5 , this embodiment provides a protection system for the absence or accidental detachment of elevator landing door panels, including an elevator control system 1, several detection devices 2 arranged in an elevator hoistway 10, detection switches 3 arranged on the landing door sills 20 of each floor, and a buzzer 4, an emergency light 5, a left infrared sensor 6 and a right infrared sensor 7 arranged on the car door 30 of the car. The detection switches 3 are arranged corresponding to the closing gaps of the landing doors. For the middle split landing doors, two detection switches 3 are arranged on the left and right. For the middle split double-fold landing doors, four detection switches 3 are arranged on the left and right. The several detection devices 2 respectively correspond to each landing door, and the detection switch 3 on the landing door sill 20 of each floor is connected to the corresponding detection device 2. The detection device 2 is used to detect whether the corresponding landing door is in the normal position, and its MCU communicates with the elevator control system 1 through CAN. The elevator control system 1 is respectively connected to the buzzer 4, the emergency light 5, the left infrared sensor 6 and the right infrared sensor 7 on the car door 30 of the car.

[0022] When the landing door panel is not in the normal position, the corresponding detection device 2 will feedback to the elevator control system 1. After receiving the signal, the elevator control system 1 shields the detection of the electrical door circuit, controls the car to move to the void layer corresponding to the landing door at a speed of 0.1 m / s, and blocks the door void through the car door 30 of the car to prevent people from falling into the pit.

[0023] When the car approaches the position of the door void, the elevator control system 1 controls the emergency light 5 to turn on and receives the signals of the left infrared sensor 6 and the right infrared sensor 7. Until reaching the leveling position of the door void, the elevator stops running, stops receiving the signals of the left infrared sensor 6 and the right infrared sensor 7, and keeps the emergency light on.

[0024] During the process of the car moving to the leveling position of the door void, if the left infrared sensor 6 and the right infrared sensor 7 detect an object around the door void, the elevator control system 1 controls the car to stop moving and turns on the buzzer 4. The buzzer 4 emits a beep. When the object at the door void moves away, the buzzer 4 stops beeping, and the car continues to move to the leveling position of the door void at a speed of 0.1 m / s.

[0025] As Figure 6 is the landing sill of the traditional structure. The landing door slider slides with the landing door in the landing sill groove to prevent the landing door panel from falling off. When the landing door slider falls off or the hook on the landing door loosens and causes the landing door panel to fall off, the elevator car stops running immediately.

[0026] As Figure 7 is the landing sill of the system. By providing mounting holes on the landing sill and adding a detection switch on the mounting hole, the detection switch is connected to the detection device. The original landing sill groove remains unchanged. Similarly, the slider slides in the groove to prevent the landing door panel from falling off. At the same time, the detection switch detects whether the landing door panel has fallen off, adding an extra safety redundancy compared to the traditional one, and having the following features:

[0027] 1. Prevent the landing door panel from falling off. When the landing door slider falls off or the hook on the landing door loosens and causes the landing door panel to fall off, the elevator car runs according to the situation.

[0028] 2. If the floor where the landing door panel falls off is the same as the car floor, the elevator car stops at the current floor. If the floor where the landing door panel falls off is not the same as the car floor, the elevator car moves to the floor where the landing door panel falls off at a speed of 0.1 m / s.

[0029] 3. When the floor where the landing door panel falls off is not the same as the car floor, there will be a hole in the original structure landing door, which cannot prevent people from entering the hoistway and falling into the pit. However, this system can block the hole in the landing door to prevent people from entering the pit and falling into the pit.

[0030] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An elevator landing door panel missing or accidentally falling off protection system, characterized in that: It includes an elevator control system, several detection devices arranged in the elevator hoistway, detection switches arranged on the sill of each floor landing door, and a buzzer, an emergency light, a left infrared sensor and a right infrared sensor arranged on the car door. The detection switches are arranged corresponding to the closing door gaps of the floor landing doors. The several detection devices respectively correspond to each floor landing door, and the detection switches on the sill of each floor landing door are connected to the corresponding detection devices. The detection devices are used to detect whether the corresponding floor landing door is in the normal position, and its MCU communicates with the elevator control system through CAN. The elevator control system is respectively connected to the buzzer, the emergency light, the left infrared sensor and the right infrared sensor on the car door.

2. The elevator landing door panel missing or accidentally falling off protection system according to claim 1, wherein: When the floor landing door panel is not in the normal position, the corresponding detection device will feedback to the elevator control system. After receiving the signal, the elevator control system shields the detection of the electrical door circuit, controls the car to move to the void layer corresponding to the floor landing door at a speed of 0.1 m / s, and blocks the door void through the car door to prevent people from falling into the pit.

3. The elevator landing door panel missing or accidentally falling off protection system according to claim 2, characterized in that: When the car approaches the position of the door void, the elevator control system controls the emergency light to turn on and receives the signals from the left infrared sensor and the right infrared sensor until it reaches the leveling position of the door void. The elevator stops running, stops receiving the signals from the left infrared sensor and the right infrared sensor, and keeps the emergency light on.

4. The elevator landing door panel missing or accidentally falling off protection system according to claim 3, wherein: During the process of the car moving to the leveling position of the door void, if the left infrared sensor and the right infrared sensor detect an object around the door void, the elevator control system controls the car to stop moving and turns on the buzzer. The buzzer emits a sound. When the object at the door void moves away, the buzzer stops sounding, and the car continues to move to the leveling position of the door void at a speed of 0.1 m / s.

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