CN217516486U

CN217516486U - Alarm device for preventing passengers from falling into elevator shaft

Info

Publication number: CN217516486U
Application number: CN202221542005.3U
Authority: CN
Inventors: 梁军; 欧其斌; 黄凯东
Original assignee: Yungtay Elevator Equipment China Co Ltd
Current assignee: Yungtay Elevator Equipment China Co Ltd
Priority date: 2022-06-20
Filing date: 2022-06-20
Publication date: 2022-09-30
Anticipated expiration: 2032-06-20

Abstract

The utility model discloses an alarm device for preventing passengers from falling into an elevator shaft, which comprises a hall detection switch, a hall detection switch sensing element, a car detection switch sensing element and an audible and visual alarm; each hall detection switch and each hall detection switch sensing element form a group of hall door detection devices for detecting the opening and closing states of two hall doors of a hall, and each hall detection switch sensing element are respectively arranged on the two hall doors of a hall; a car detection switch sensing element and a car detection switch arranged at the position of a shaft corresponding to a lobby form a car door detection device of the opening and closing state of a car door, and the car detection switch sensing element is arranged on the car; an audible and visual alarm is arranged at a proper position of each entrance hall; the audible and visual alarm, the hall detection switch and the car detection switch of each hall are connected in series and then are connected with a power supply.

Description

Alarm device for preventing passengers from falling into elevator shaft

Technical Field

The utility model relates to an elevator technical field, in particular to prevention takes advantage of alarm device that field personnel fall elevartor shaft.

Background

In an elevator accident, the door closing fault is caused mostly, and the consequences are also serious. To this, the elevator is listened through self sensor (for example door lock switch), again through MPU logic judgement processing, can effectively discern if: and in the operation process, the elevator stops operating in time due to dangers such as abnormal opening of the hall door, opening of the elevator door and the like.

The protection described above also has some drawbacks:

one is as follows: when the hoistway door is abnormally opened, only the elevator is stopped, and the danger cannot be effectively avoided, so that passengers still have great risk of falling into the hoistway;

the second step is as follows: the elevator relies on the combination of a sensor and an MPU (micro processing unit) and the like to detect the door faults, and the elevator is relatively inconvenient for upgrading the existing elevator.

To this end, the chinese patent application publication No. CN107364773A discloses a voice sound and light warning device for preventing elevator from falling down, which comprises a sound warning device and a light warning device, and further comprises an abnormality detection switch device, wherein the abnormality detection switch device adopts a landing door sensor and a car sensor to detect the opening and closing of the landing door and the stopping and separation of the car, and judges the detection signals through a logic switch mainly composed of the landing door sensor and the car sensor, when the abnormal conditions of the landing door opening and the car separation occur at the same time, the detection signals of the landing door sensor and the car sensor for opening the door and separating the car are judged as abnormal through the logic switch, and immediately switches on the power supply of the sound warning device and the light warning device, so that the sound warning device can send out voice warning sound or/and warning sound for warning people, meanwhile, the light warning device emits flashing warning light to remind people of paying attention to safety, so that the purpose of safety protection is achieved.

Although the floor door sensor and the car sensor of the patent application both adopt reed pipe sensors with induction magnets, the reed pipe sensors also need to adopt magnetic isolation plates as detected objects, and the circuit structure is complex, and a time base integrated circuit, a relay, a plurality of triodes, a plurality of resistors, a plurality of capacitors and a plurality of diodes are needed, so that the cost is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the circuit structure that exists to the device that is used for preventing to take advantage of the field personnel to fall into the well among the prior art is complicated, with high costs problem and provide a simple structure and with low costs prevention and take advantage of the alarm device that the field personnel fall the elevartor shaft.

In order to achieve the purpose, the utility model discloses a prevent that personnel in the field fall alarm device of elevartor shaft, including at least one entrance hall detection switch, at least one entrance hall detection switch response element, at least one car detection switch, a car detection switch response element and at least a sound-light alarm; each hall detection switch and each hall detection switch sensing element form a group of hall and hall door detection devices for detecting the opening and closing states of two hall doors of one hall, and each hall detection switch sensing element are respectively arranged on the two hall doors of one hall; a car detection switch sensing element and a car detection switch mounted at a hoistway position corresponding to a lobby form a car door detection device of a car door opening and closing state, and the car detection switch sensing element is mounted on the car; an audible and visual alarm is arranged at a proper position of each entrance hall; the audible and visual alarm, the hall detection switch and the car detection switch of each hall are connected in series and then connected with a power supply; when the hall detection switch sensing element is close to or a hall detection switch corresponding to the principle, the hall detection switch is switched on and off; when the car detection switch sensing element approaches a car detection switch arranged at a shaft position corresponding to a hall, the car detection switch is switched on and off.

In a preferred embodiment of the present invention, the hall detection switch and the car detection switch of each hall are dry reed type proximity switches; the hall detection switch sensing element is hall detection switch sensing magnet, and car detection switch sensing element is car detection switch sensing magnet.

In a preferred embodiment of the present invention, the reed switch proximity switch is a reed normally closed electromagnetic switch.

Since the technical scheme as above is used, the utility model discloses only need dry reed tube proximity switch and magnet, detect car position and room door state respectively, when the car is in the lobby of the present rank, then the car detection switch in the lobby of the present rank is opened, and when the room door was in the open mode, the lobby detection switch was in the closure.

The utility model discloses a detection of two sets of detection switches can discern the room door of working as the entrance hall and open, and the car is not here dangerous, carries out acousto-optic warning through two sets of detection switches drive audible-visual annunciator this moment, prevents that the personnel from weighing down into the elevartor shaft. The utility model discloses need not components and parts such as time base integrated circuit, relay, triode, resistance and electric capacity and diode for simple structure and with low costs.

Drawings

Fig. 1 is the utility model discloses a prevention takes advantage of the alarm device's of the personnel elevator shaft that falls installation schematic diagram.

Fig. 2 is the utility model discloses an alarm device that prevention personnel fell elevator shaft opens, does not have the electric principle sketch map that dangerous not reported to the police at 10 storeys of halls.

Fig. 3 is the utility model discloses an alarm device that prevention personnel fell elevator shaft closes, does not have the electric principle sketch map of dangerous not reporting to the police in 10 halls.

Fig. 4 is the utility model discloses an electric principle schematic diagram that alarm device that prevention personnel fell the elevartor shaft was opened, had danger warning in 9 storeys of the family room.

Fig. 5 is the utility model discloses an alarm device that prevention personnel fell elevator shaft closes, does not have the electric principle sketch map that dangerous not reported to the police in the 9 halls.

Detailed Description

The invention is further described below with reference to the accompanying drawings and the detailed description.

Referring to fig. 1 to 5, the alarm device for preventing passengers from falling into the elevator shaft of the present invention is described as being installed on the 9 th floor and the 10 th floor.

An audible and visual alarm 1 is arranged at proper positions of

hallways

9 and 10 of the 9 th and the 10 th buildings, a car detection switch 2 is arranged at the position of a hoistway 20 corresponding to the hallway 9 and the hallway 10 of the 9 th building respectively, and a car detection switch sensing element 4 is arranged at a proper position of a car 30 and moves along with the car 30. One hall detection switch 3 is arranged on each hall door of the 9-floor hall 9 and the 10-floor hall 10 and moves along with the opening of the hall door. A hall detection switch sensing element (not shown) is mounted on each hall door of the 9-th hall 9 and the 10-th hall 10, and moves with the opening of the hall door.

The car detection switch 2 and the hall detection switch 3 are reed pipe normally closed electromagnetic switches, the car detection switch inductive element 4 is a car detection switch inductive magnetic strip, and the hall detection switch inductive element is a hall detection switch inductive magnet.

When the car 30 moves to the 10 th hall and the hall door of the 10 th hall 10 is opened, the car detection switch sensing element 4 on the car 30 is far away from the car detection switch 2 in the hoistway 20 corresponding to the 10 th hall 10, at this time, the car detection switch 2 in the hoistway 20 corresponding to the 10 th hall 10 is in an off state under the driving of the car detection switch sensing element 4, and the car detection switch 2 in the hoistway 20 corresponding to the 9 th hall 9 is in a normally-closed state. Since the hall detection switch 3 on one hall door of the 10-th hall 10 is in a normally closed state as the hall door of the 10-th hall 10 is opened, the power supply of the audible and visual alarm 1 on the 10 th floor is cut off, and no alarm is given.

If the hall door of the 9-building hall 9 is opened abnormally at the moment, the hall detection switch 3 on one hall door of the 9-building hall 9 is switched to the normally closed state from the off state, and the hall detection switch 3 on one hall door of the 9-building hall 9 is in the normally closed state at the moment, the power supply of the audible and visual alarm 1 of the 9-building is switched on, and the alarm is given out.

Claims

1. An alarm device for preventing passengers from falling into an elevator shaft is characterized by comprising at least one hall detection switch, at least one hall detection switch sensing element, at least one car detection switch, a car detection switch sensing element and at least one audible and visual alarm; each hall detection switch and each hall detection switch sensing element form a group of hall and hall door detection devices for detecting the opening and closing states of two hall doors of one hall, and each hall detection switch sensing element are respectively arranged on the two hall doors of one hall; a car detection switch sensing element and a car detection switch arranged at the position of a shaft corresponding to a lobby form a car door detection device of a car door opening and closing state, and the car detection switch sensing element is arranged on the car; an audible and visual alarm is arranged at a proper position of each entrance hall; the audible and visual alarm, the hall detection switch and the car detection switch of each hall are connected in series and then connected with a power supply; when the hall detection switch sensing element is close to or a hall detection switch corresponding to the principle, the hall detection switch is switched on and off; when the car detection switch sensing element approaches a car detection switch installed at a hoistway position corresponding to a lobby, the car detection switch is switched on and off.

2. The alarm device for preventing passengers from falling down into an elevator shaft as claimed in claim 1, wherein the hall detection switch and the car detection switch of each hall are reed type proximity switches; the hall detection switch sensing element is hall detection switch sensing magnet, and car detection switch sensing element is car detection switch sensing magnet.

3. An alarm unit for preventing personnel from falling into an elevator shaft as claimed in claim 2, wherein said reed-type proximity switch is a reed-normally closed electromagnetic switch.