Fire monitoring and emergency linkage device for subway escalator shaft

Abstract

The utility model discloses a subway direct elevator shaft fire monitoring and emergency linkage device, including first smoke detector, detection box and install second smoke detector, temperature sensor, siren, power and display on the detection box, and detection box is installed above direct elevator control box, and temperature sensor is used for detecting direct elevator control box operating temperature, and display and temperature sensor electric connection, and display can set alarm temperature, when control box operating temperature is greater than or equal to alarm temperature, siren rings, first smoke detector is installed in direct elevator shaft top, is used for detecting the smoke in direct elevator shaft, second smoke detector is installed outside detection box, is used for detecting the smoke of direct elevator control box, and power and second smoke detector, temperature sensor, siren, display electric connection and are used for its power supply. Can identify direct elevator important component abnormal operating temperature, shaft environmental abnormal smoke early and alarm to ensure direct elevator safe operation.

Description

Technical Field

[0001] This utility model belongs to the field of fire monitoring technology, specifically relating to a fire monitoring and emergency response device for subway elevator shafts. Background Technology

[0002] Currently, elevators are widely used and frequently operated equipment in subway operations, providing passengers with comfortable, smooth, and safe vertical transportation. However, elevators are also specialized equipment with complex structures, high levels of automation, and require special attention to safety during operation. Installed in a relatively enclosed environment, elevators are vulnerable to emergencies such as internal circuit overload or short circuits leading to smoke or fire. This can cause the equipment to stop operating and even injure passengers inside. Currently, subway elevator products lack devices and functions for detecting, alarming, guiding evacuation in case of fire in the shaft, or linking with other related disaster prevention equipment. If a fire alarm occurs inside the elevator, the inability to promptly activate the elevator's emergency descent device hinders evacuation and poses a safety risk. This is especially true for elevators operating in subway stations, where large-scale passenger evacuation and emergency personnel operations are involved.

[0003] Therefore, a new technology is needed to address the problem that existing technologies fail to identify abnormal operating temperatures of critical elevator components and abnormal smoke in the shaft environment in a timely manner. Utility Model Content

[0004] To address the aforementioned problems in the prior art, this utility model provides a fire monitoring and emergency linkage device for subway elevator shafts. It can identify abnormal operating temperatures of important components of subway elevators and abnormal smoke in the shaft environment as early as possible, and automatically alarm and guide passengers to evacuate in such situations, thus ensuring the safe operation of the elevator.

[0005] The present invention adopts the following technical solution:

[0006] A fire monitoring and emergency response device for subway elevator shafts includes a first smoke detector, a detection box, and a second smoke detector, a temperature sensor, an alarm, a power supply, and a display mounted on the detection box. The detection box is installed above the elevator control box. The temperature sensor is used to detect the operating temperature of the elevator control box. The display is electrically connected to the temperature sensor and the alarm, and is used to set the alarm temperature. When the operating temperature of the elevator control box is greater than or equal to the alarm temperature, the alarm sounds.

[0007] The first smoke detector is installed at the top of the vertical elevator shaft to detect smoke inside the shaft; the second smoke detector is installed on the outside of the detection box to detect smoke generated by the elevator control box.

[0008] The power supply is electrically connected to and powers the second smoke detector, the temperature sensor, the alarm, and the display.

[0009] As a further improvement to the technical solution of this utility model, the second smoke detector is installed on the bottom surface of the detection box.

[0010] As a further improvement to the technical solution of this utility model, the bottom of the mounting bracket is detachably fixedly connected to the straight ladder frame, and the upper part is detachably fixedly connected to the detection box.

[0011] As a further improvement to the technical solution of this utility model, the mounting bracket includes a first support frame and a second support frame arranged at intervals and in parallel. The lower ends of the first support frame and the second support frame are detachably fixedly connected to the straight ladder frame, and the upper ends are detachably fixedly connected to the detection box. The second smoke detector is located between the first support frame and the second support frame.

[0012] As a further improvement to the technical solution of this utility model, the mounting bracket further includes several connecting columns. The upper ends of some of the connecting columns are detachably and fixedly connected to the detection box, and the lower ends are detachably and fixedly connected to the top of the first support frame. The upper ends of other connecting columns are detachably and fixedly connected to the detection box, and the lower ends are detachably and fixedly connected to the second support frame. Two adjacent connecting columns are spaced apart.

[0013] As a further improvement to the technical solution of this utility model, the cross-sections of the first support frame and the second support frame in the vertical direction are both I-shaped.

[0014] As a further improvement to the technical solution of this utility model, the control box has several through holes on one side and ventilation holes on the opposite side.

[0015] As a further improvement to the technical solution of this utility model, a fan is installed inside the ventilation hole, and the fan is used to draw air from the outside to the inside of the control box.

[0016] As a further improvement to the technical solution of this utility model, the alarm includes a buzzer, and the buzzer sounds when the temperature sensor detects that the operating temperature of the elevator control box is greater than or equal to the alarm temperature.

[0017] As a further improvement to the technical solution of this utility model, the alarm also includes a voice broadcaster, which sounds when the temperature sensor detects that the operating temperature of the elevator control box is greater than or equal to the alarm temperature.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] The fire monitoring and emergency linkage device for subway elevator shafts in this solution can identify abnormal operating temperatures of important components of subway elevators and abnormal smoke in the shaft environment in an early manner. In such cases, it can automatically alarm and guide passengers to evacuate in a timely manner, ensuring the safe operation of the elevator. It can also link with other disaster prevention equipment to enable the elevator to make a timely and safe emergency landing. Attached Figure Description

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0021] Figure 1 This is a top-down view of the internal structure of the testing chamber;

[0022] Figure 2 This is a side view of the testing box;

[0023] Figure 3 This is a bottom view of the testing box;

[0024] Figure 4 This is a schematic diagram of a fan installation.

[0025] Figure 5 This is an installation diagram for another type of fan.

[0026] Figure label:

[0027] 1-Detection box; 11-Second smoke detector; 12-Power supply; 13-Leakage protection switch; 14-Display; 141-Display screen; 15-Voice announcer; 16-Terminal block; 17-Fan. Detailed Implementation

[0028] The following will provide a clear and complete description of the concept, specific structure, and technical effects of this utility model in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, solution, and effects of this utility model. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The same reference numerals used throughout the drawings indicate the same or similar parts.

[0029] It should be noted that, unless otherwise specified, when a feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or it can be indirectly fixed or connected to the other feature. Furthermore, the descriptions of "upper," "lower," "left," and "right" used in this utility model are only relative to the relative positional relationships of the various components of this utility model in the accompanying drawings.

[0030] Reference Figures 1 to 5A fire monitoring and emergency response device for subway elevator shafts includes a first smoke detector, a detection box 1, and a second smoke detector 11, a temperature sensor, an alarm, a power supply 12, and a display 14 installed on the detection box 1. The detection box 1 is installed above the elevator control box. The temperature sensor detects the operating temperature of the elevator control box, facilitating the monitoring of the operating temperature of critical components such as the elevator control box. The display 14 is electrically connected to both the temperature sensor and the alarm, and is used to set the alarm temperature. When the operating temperature of the elevator control box is greater than or equal to the alarm temperature, the alarm sounds. When the operating temperature of a critical component such as the elevator control box exceeds the set temperature threshold, passenger evacuation can be completed as quickly as possible. The first smoke detector is installed at the top of the elevator shaft to detect smoke within the shaft, enabling overall smoke monitoring within the shaft. The second smoke detector 11 is installed outside the detection box 1 to detect smoke generated by the elevator control box, facilitating independent monitoring of smoke that may occur in the event of a malfunction in the elevator control box. The power supply 12 is electrically connected to and supplies power to the second smoke detector 11, the temperature sensor, the alarm, and the display 14. Both the first smoke detector and the second smoke detector 11 are electrically connected to the station monitoring system and can issue warnings to the system.

[0031] This solution's device can automatically link with other disaster prevention equipment such as elevator safety emergency landing, automatic alarms, and passenger evacuation guidance systems. When any of the above sounds or other alarm information is detected, the fire control room staff can be notified promptly via the buzzer on the integrated back panel of the station control room and the monitoring workstation. Upon receiving the above alarm information, the access control to the nearby mini fire station can be automatically released, allowing personnel to directly use the equipment within the mini fire station.

[0032] Specifically, the second smoke detector 11 is installed on the bottom surface of the detection box 1 to detect smoke emitted from the elevator control box located below it. Both the first and second smoke detectors 11 can be of model HM-608PC.

[0033] Specifically, the bottom of the detection box 1 is equipped with a placement slot for a temperature sensor. The slot can be placed in any available space within the detection box 1, and a cover or clip can be installed at the slot opening to secure the temperature sensor, preventing collisions with the inner wall or internal components of the detection box 1 during transport before use. The temperature sensor placed in the slot of the detection box 1 can be directly used to detect the temperature of the elevator control box. Since the temperature sensor is detachably fixed to the detection box 1, it can also be removed from the detection box 1 and installed on the elevator control box. The temperature sensor can be attached to the surface of the elevator control box or the surface of the DC power supply 12 inside the control box for real-time monitoring of the control box temperature. When an abnormal situation occurs in the control box, such as smoke, increased ambient temperature, or increased control box temperature (or one or more of these), a signal can be output to the elevator operating system to force the elevator to land. Simultaneously, the first smoke detector, the second smoke detector 11, and the alarm will sound accordingly. The temperature sensor can be a contact-type temperature measuring resistor, such as a PT100 resistance temperature detector. The display 14 can preferably be a digital display 14 or a digital display meter. The contact temperature measuring resistor serves as a component for monitoring the operating temperature of the elevator control box. The digital display meter is matched to it, forming a complete temperature monitoring mechanism. This temperature monitoring mechanism is powered by 220V. The RTD is directly connected to the digital display meter, which by default has two relay outputs. The digital display meter can be set with alarm temperatures. The temperature range that the display meter can detect is 0℃-200℃. During use, it can be set to trigger an alarm when the actual on-site temperature reading is greater than or equal to 50℃.

[0034] Specifically, the display 14 can be nested on the outer surface of the detection box 1. The display 14 is equipped with a display screen 141. The display 14 includes a display operation panel and the display screen 141. The display screen 141 is flush with or exposed outside the detection box 1 on one side of its outer surface. Figure 1 and 3 As shown. The display 14 has a control system installed inside, which can use conventional chips and related circuits.

[0035] Specifically, the detection box 1 is equipped with a leakage current protection switch 13. The power supply 12 inside the detection box 1 is preferably an integrated AV220 to DC12V / 24V DC switching power supply 12. The power source of the detection box 1 is located above the AV220 leakage current protection switch near the right side control panel of the elevator main door. The existing elevator cable trays can be used for cable laying. The display 14 is preferably a digital display 14, installed on one side inside the detection box 1, and can be nested inside the side of the box. A fire alarm signal aggregation interface can be set on the detection box 1 to send a forced landing signal to the elevator control system in case of abnormality. The forced landing signal output interface is connected in parallel to the interface relay of EMCS above to realize forced landing linkage. A terminal block 16 is installed inside the detection box 1. The terminal block 16 is used for arranging the wires inside the detection box 1 and making electrical connections with various circuit components outside the detection box 1.

[0036] Specifically, the subway elevator shaft fire monitoring and emergency linkage device of this solution also includes an installation bracket, the bottom of which is detachably fixed to the elevator frame, and the top of which is detachably fixed to the detection box 1.

[0037] Specifically, the mounting bracket includes a first support frame and a second support frame arranged at intervals and in parallel. The lower ends of the first support frame and the second support frame are detachably fixed to the straight ladder frame, and the upper ends are detachably fixed to the detection box 1. The second smoke detector 11 is located between the first support frame and the second support frame. The straight ladder control box is located between the first support frame and the second support frame and is located below the second smoke detector 11.

[0038] Specifically, the mounting bracket further includes several connecting columns. Some of these connecting columns have their upper ends detachably fixedly connected to the testing box 1 and their lower ends fixedly connected to the top of the first support frame. Other connecting columns have their upper ends detachably fixedly connected to the testing box 1 and their lower ends detachably fixedly connected to the second support frame. Adjacent connecting columns are spaced apart. The connection between the connecting columns and the support frame can be achieved by welding or bolting, and the connection between the connecting columns and the testing box 1 can be achieved by bolting.

[0039] Specifically, both the first support frame and the second support frame have an I-shaped cross-section in the vertical direction, and both the first support frame and the second support frame can be made of I-shaped steel.

[0040] Specifically, the testing box 1 has several through holes on one side and ventilation holes on the opposite side. Since the testing box 1 contains devices such as a power supply 12, convection can be formed on both sides, facilitating heat dissipation inside the testing box 1. Alternatively, a ventilation hole can be provided on each of the two opposite sides of the testing box 1, with the two ventilation holes positioned close to the diagonal of the testing box 1. In this case, the two ventilation holes are located on opposite sides of the diagonal. Or, a ventilation hole can be provided at the ends of two adjacent sides of the testing box 1 that are far apart from each other. In this case, the two ventilation holes are located on the same side of the diagonal.

[0041] Specifically, a fan 17 is installed inside the ventilation hole. The fan 17 is used to draw air from the outside to the inside of the testing box 1, which can better dissipate heat. When the testing box 1 has two ventilation holes, a fan can be installed in each of the two ventilation holes. One fan 17 draws air from the inside to the outside, and the other fan 17 draws air from the outside to the inside. When a ventilation hole is set at one end of each of two adjacent sides of the testing box 1 that is far apart from each other, the installation of the two fans can be referred to... Figure 4 and Figure 5 set up.

[0042] Specifically, since a common elevator control box typically has a fan installed on the left side to draw air inwards for cooling, and multiple circular perforations on the right side for exhaust, if smoke appears inside the control box, it will be expelled through the perforations on the right side according to the airflow direction, and the smoke will temporarily concentrate in the corner where the control box is installed. The detection box 1 or the second smoke detector 11 can be installed close to the perforations on the elevator control box.

[0043] Specifically, the alarm includes a buzzer, which sounds when the temperature sensor detects that the operating temperature of the elevator control box is greater than or equal to the alarm temperature. The circuit containing the buzzer can be implemented using conventional techniques, such as electrically connecting the temperature sensor to the buzzer and electrically connecting the temperature sensor's output terminal to the buzzer's input terminal. Alternatively, the temperature sensor's output terminal can be electrically connected to the input terminal of the control system, and the controller's output terminal can be electrically connected to the buzzer's input terminal, so that the buzzer sounds when the temperature sensor detects that the operating temperature of the elevator control box is greater than or equal to the alarm temperature. The buzzer can be installed on the detection box 1, or inside or outside the subway elevator shaft.

[0044] Specifically, the alarm also includes a voice announcer 15, which sounds when the temperature sensor detects that the operating temperature of the elevator control box is greater than or equal to the alarm temperature. The circuit containing the voice announcer 15 can be implemented using conventional techniques, such as electrically connecting the temperature sensor to the voice announcer 15 and electrically connecting the electrical signal output terminal of the temperature sensor to the input terminal of the voice announcer 15. Alternatively, the electrical signal output terminal of the temperature sensor can be electrically connected to the input terminal of the control system, and the output terminal of the controller can be electrically connected to the input terminal of the voice announcer 15, so that the voice announcer 15 sounds when the temperature sensor detects that the operating temperature of the elevator control box is greater than or equal to the alarm temperature.

[0045] This solution's subway elevator shaft fire monitoring and emergency linkage device can identify abnormal operating temperatures of critical elevator components and abnormal smoke levels within the shaft as early as possible. In such cases, it can promptly activate the elevator safety emergency landing system, automatically trigger alarms, guide passenger evacuation, and automatically activate other disaster prevention equipment to ensure the safe operation of the elevator. The device can detect the operating temperature of critical components, independently monitor smoke that may occur during malfunctions, and monitor overall smoke levels in the shaft. Electrically connecting the device to the elevator emergency landing system allows for the output of a control signal to force the elevator to land and open its doors when the operating temperature of a critical component exceeds a set threshold or a smoke detection alarm (from any smoke detector). It also automatically initiates voice announcements to guide passenger evacuation as quickly as possible, ensuring the safe operation of the elevator.

[0046] Considering that some elevator shafts are enclosed spaces, and to facilitate on-site installation and avoid affecting the normal operation of the elevators, the detection box 1 in this solution serves as an independent monitoring device. Installation is convenient; except for the first smoke detector, all other detectors can be installed on the detection box 1 or its mounting bracket. During implementation, only the power supply line 12 and the installation of the detection box 1 are required, simplifying the process and improving efficiency. All circuit components in this solution utilize conventional technologies, and the existing cabling system is used, avoiding the need to drill through walls in enclosed spaces like elevator shafts to lay cables. The smoke detectors and RTD temperature detectors in this solution both have signal output points, allowing for the addition of detection signals later through other methods, such as adding signals to the EMCS.

[0047] The device in this solution can also be automatically linked with other disaster prevention equipment such as elevator safety emergency landing, automatic alarm, and passenger evacuation guidance devices. When the above alarm information occurs, the fire control room staff can be notified in a timely manner through the buzzer on the integrated back panel of the station control room and the monitoring workstation. When the above alarm information occurs, the access control of the nearby mini fire station can also be automatically released, allowing personnel to directly use the equipment inside the mini fire station. The leakage protection switch 13, DC power supply 12, RTD, digital display meter, and various signal connection boards can be installed in the detection box 1. The second smoke detector 11, used to monitor abnormal smoke in the elevator control box, is installed below the detection box 1. Except for the first smoke detector, the detection box 1 is integrated into one unit for easy installation and will not affect the original vertical shaft elevator structure. That is, the first smoke detector is installed directly above the vertical shaft, and all other structures are integrated into the detection box 1 for easy installation and maintenance.

[0048] Other aspects of the fire monitoring and emergency response device for subway elevator shafts described in this utility model are available in the prior art and will not be repeated here.

[0049] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A fire monitoring and emergency response device for subway elevator shafts, characterized in that: The system includes a first smoke detector, a detection box, and a second smoke detector, a temperature sensor, an alarm, a power supply, and a display mounted on the detection box. The detection box is installed above the elevator control box. The temperature sensor is used to detect the operating temperature of the elevator control box. The display is electrically connected to both the temperature sensor and the alarm, and is used to set the alarm temperature. When the operating temperature of the elevator control box is greater than or equal to the alarm temperature, the alarm sounds. The first smoke detector is installed at the top of the vertical elevator shaft to detect smoke inside the shaft; the second smoke detector is installed on the outside of the detection box to detect smoke generated by the elevator control box. The power supply is electrically connected to and powers the second smoke detector, the temperature sensor, the alarm, and the display.

2. The subway elevator shaft fire monitoring and emergency response device according to claim 1, characterized in that: The second smoke detector is installed on the bottom surface of the detection box.

3. The subway elevator shaft fire monitoring and emergency response device according to claim 2, characterized in that: It also includes a mounting bracket whose bottom is detachably fixed to the straight ladder frame, and whose top is detachably fixed to the testing box.

4. The subway elevator shaft fire monitoring and emergency response device according to claim 3, characterized in that: The mounting bracket includes a first support frame and a second support frame arranged at intervals and in parallel. The lower ends of the first support frame and the second support frame are detachably fixed to the straight ladder frame, and the upper ends are detachably fixed to the detection box. The second smoke detector is located between the first support frame and the second support frame.

5. The subway elevator shaft fire monitoring and emergency response device according to claim 4, characterized in that: The mounting bracket also includes several connecting columns. The upper ends of some of the connecting columns are detachably and fixedly connected to the detection box, and the lower ends are detachably and fixedly connected to the top of the first support frame. The upper ends of other connecting columns are detachably and fixedly connected to the detection box, and the lower ends are detachably and fixedly connected to the second support frame. Two adjacent connecting columns are spaced apart.

6. The subway elevator shaft fire monitoring and emergency response device according to claim 5, characterized in that: Both the first support frame and the second support frame have an I-shaped cross-section in the vertical direction.

7. The subway elevator shaft fire monitoring and emergency response device according to claim 1, characterized in that: The control box has several through holes on one side and ventilation holes on the opposite side.

8. The subway elevator shaft fire monitoring and emergency response device according to claim 7, characterized in that: A fan is installed inside the ventilation hole, and the fan is used to draw air from the outside to the inside of the control box.

9. The subway elevator shaft fire monitoring and emergency response device according to claim 1, characterized in that: The alarm includes a buzzer, which sounds when the temperature sensor detects that the operating temperature of the elevator control box is greater than or equal to the alarm temperature.

10. The subway elevator shaft fire monitoring and emergency response device according to claim 9, characterized in that: The alarm also includes a voice announcer, which sounds when the temperature sensor detects that the operating temperature of the elevator control box is greater than or equal to the alarm temperature.

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