CN203173662U - Protecting device against mistaken opening of door of elevator out of control - Google Patents

Abstract

The utility model discloses an elevator out-of-control door opening protection device, which comprises an elevator car (1), an elevator door (2), a traction system (3), a monitoring duty room (4), and a shaft of the elevator door (2). A human pyro-infrared detection system (5) is installed on the opposite wall, and an alarm (6) is installed on the wall above the elevator door. The human body pyro-infrared detection system (5) includes a human body pyro-infrared sensor and a signal processing system , a safety fence (7) is installed on the inside or outside of the elevator door, the human body pyrolysis infrared sensor is connected to the signal processing system, and the signal processing system is respectively connected to the alarm (6), the monitoring duty room (4) and the servo drive system , the servo drive system is connected with the motor, and the motor is connected with the safety fence (7). The utility model can prevent passengers from entering the elevator and falling to the bottom of the well by issuing an alarm and opening the safety barrier when the elevator door is opened but the elevator car has not arrived, and can effectively reduce elevator accidents.

Description

Elevator runaway door opening protection device

technical field

The utility model relates to a protection device for an elevator running out of control and mistakenly opening a door.

Background technique

According to statistics, there are more than 346,000 elevators in use in China, and the annual growth rate is about 50,000 to 60,000. Elevators have served China for more than 100 years, but the rapid increase in the number of elevators in use in China occurred after the reform and opening up. At present, China's elevator technology level has been synchronized with the world, and elevators have long been common in various high-rise buildings. Widely known elevators are roughly divided into two categories: one is the escalator elevator installed and used in large shopping malls; the other is the lift elevator. The elevators installed and used in the early days have been used for decades. Although they have been overhauled and continued to run, the elevators still have unsatisfactory failures during use, and elevator casualties have occurred from time to time. According to reports, elevators Occurred for many times that the elevator door was opened but the elevator car did not arrive, causing passengers to enter the elevator due to negligence and fall to the bottom of the elevator shaft to cause injuries or even death, which brought huge losses and pain to people.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art, to provide a method that can prevent passengers from entering the elevator due to negligence and falling to the bottom of the well by issuing an alarm and opening the safety barrier when the elevator door is opened but the elevator has not arrived, which can effectively reduce the Elevator out of control and accidental door opening protection device for elevator accidents and casualties.

The purpose of this utility model is achieved through the following technical solutions: it includes an elevator car, an elevator door, a traction system and a monitoring duty room. An alarm is installed on the wall, the human body pyrolysis infrared detection system includes a human body pyrolysis infrared sensor and a signal processing system, a safety fence is installed inside or outside the elevator door, and the human body pyrolysis infrared sensor is connected with the signal processing system , the signal processing system is respectively connected with the alarm, the monitoring duty room and the servo drive system, the servo drive system is connected with the motor, and the motor is connected with the safety fence.

The alarm is also connected with the monitoring duty room.

The utility model has the advantages of:

(1) Double protection of alarm and activation of safety barriers is adopted, which can not only send out an alarm to remind passengers not to enter the elevator, but also substantially prevent passengers from entering the elevator door that the elevator car has not reached due to negligence, and fall to the bottom of the elevator shaft, resulting in casualties.

(2) The signal processing system is connected with the monitoring duty room, which can promptly notify the duty personnel of elevator operation failure, so that the duty personnel can close the main gate in time to ensure the safety of passengers, and timely repair the elevator to eliminate faults and reduce losses.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the signal processing system flowchart of the human body pyrolysis infrared detection system of the present utility model;

In the figure, 1-elevator car, 2-elevator door, 3-traction system, 4-monitoring duty room, 5-human pyroelectric infrared detection system, 6-alarm, 7-safety fence.

Detailed ways

The technical scheme of the utility model is further described below in conjunction with the accompanying drawings, but the content protected by the utility model is not limited to the following description.

As shown in Figure 1, the protection device for elevator out of control and accidental door opening includes an elevator car 1, an elevator door 2, a traction system 3 and a monitoring duty room 4, and a human body pyro-infrared detection system is installed on the wall opposite the well of the elevator door 2 5. An alarm 6 is installed on the wall above the elevator door. The human body pyrolysis infrared detection system 5 includes a human body pyrolysis infrared sensor and a signal processing system. A safety fence 7 is installed inside or outside the elevator door. The infrared sensor is connected with the signal processing system, and the signal processing system is connected with the alarm 6, the monitoring duty room 4 and the servo drive system respectively, and the servo drive system is connected with the motor, and the motor is connected with the safety fence 7.

The alarm 6 is also connected with the monitoring duty room 4. When an accident occurs in the elevator and maintenance is carried out, the elevator door 2 is opened to facilitate the maintenance personnel to enter and exit the elevator shaft, and the safety barrier 7 is in a stopped state. The monitoring duty room 4 sends an alarm signal and transmits it to the alarm 6. Alert passengers.

The working principle of the utility model is: the motor drives the elevator car 1 to run up and down through the traction system 3. When the elevator is working normally, the human body pyrolysis infrared sensor cannot detect the human body pyrolysis infrared signal, and the alarm 6 and the safety fence 7 are both in the stop state. When a passenger presses the elevator button on a certain floor, the elevator car 1 does not stop at the predetermined position due to failure or out of control, but the elevator door 2 opens automatically, and the human body pyrolysis infrared sensor installed on the opposite side of the shaft of the elevator door 2 Quickly detect the human body pyro-infrared signal, convert it into an electrical signal and perform multi-stage amplification processing, and then transmit the signal in three ways: one way transmits the alarm 6, and an alarm is issued to remind passengers not to enter the elevator; the second way Send to the servo drive system, the servo drive system controls the motor action, drives the safety fence 7 to quickly close the safety fence, thereby preventing passengers on this floor from entering the elevator; the third signal is sent to the duty monitoring room 4, and reminds the duty personnel that there is a fault in the elevator operation , Ask the staff to carry out maintenance in time to troubleshoot and reduce losses.

As shown in Figure 2, the signal processing process of the human body pyro-infrared signal of the present invention is: the human body pyro-infrared signal passes through the multi-stage amplification of the pre-amplifier circuit, the gain amplifier circuit and the variable amplifier circuit in turn, and then transmits to the trigger System, after the trigger system receives the signal, it transmits the electrical signal to the alarm, servo drive system and monitoring duty room respectively through the pump pipe system. the

Claims (2)

1. an elevator fender guard that opens by mistake out of control; it comprises lift car (1); elevator door (2); traction system (3) and monitoring watch house (4); it is characterized in that: the hoistway of elevator door (2) is provided with people's body heat to sidewalls and releases infrared detection system (5); on the wall of elevator door top annunciator (6) is installed; described people's body heat is released infrared detection system (5) and is comprised the pyroelectric infrared sensor of human body and signal handling equipment; elevator door inboard or the outside are equipped with catch fence (7); the pyroelectric infrared sensor of described human body links to each other with signal handling equipment; signal handling equipment respectively with annunciator (6); monitoring watch house (4) is connected with servo drive system; servo drive system links to each other with motor, and motor is connected with catch fence (7).

2. an elevator according to claim 1 fender guard that opens by mistake out of control is characterized in that: described annunciator (6) also is connected with monitoring watch house (4).

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