Linkage type emergency alarm device for elevator car

Abstract

The application discloses a linkage type emergency alarm device for an elevator car, which comprises a box body, a light supplementing groove, an air detection box and a third cavity, a light supplementing groove is arranged on the top of the box body, an air detection box is mounted on the outer wall of the box body, a linkage box is mounted on the inner wall of the first cavity, a detection cavity is mounted on the inner wall of the air detection box, and a photosensitive device is mounted on the top of the box body. The light supplementing groove and the photosensitive device are installed, so that light can be supplemented; when the elevator fails, the resistance of the photoresistor changes, then the motor is started, the motor rotates to drive the driving gear to rotate, the driving gear rotates to drive the gear groove to move, the gear groove moves to drive the lifting rod to move, the lifting rod moves upward to drive the circuit board to move, the circuit board moves to drive the protective cover to move upward, the protective cover contacts the roller, then the shielding plate is pressed, so that the shielding plate no longer shields the protective cover, so that the LED lamp can emit light outward, and the lighting function is realized.

Description

Technical Field

[0001] This invention relates to the field of elevator technology, specifically to a linkage-type emergency alarm device for elevator cars. Background Technology

[0002] An elevator is a permanent transportation device that serves several specific floors within a building. Its car moves on at least two rigid tracks that are perpendicular to the horizontal plane or have an angle of inclination of less than 15° to the vertical. Elevators are common transportation devices in daily life, and most modern high-rise residential buildings are equipped with elevators. Elevators are powered by electricity, which requires corresponding emergency alarm and rescue devices to promptly alert authorities when an elevator malfunctions.

[0003] The existing elevator emergency alarm devices have the following defects:

[0004] 1. Patent document CN110054060A discloses an automatic alarm device for entrapment in an elevator car. The protected claim "includes a car, a processor, a relay, a human body sensor, and a speaker. The outer wall of the human body sensor is fixedly connected to the inner wall of the car. The top of the speaker, away from the inner display, is snapped into the inner wall of the car. The side of the relay, away from the processor, is fixedly connected to the top of the car. This automatic alarm device for entrapment in an elevator car, after the elevator stops running and the car door remains closed, automatically sends an alarm signal when the human body sensor detects that the interior lighting is off, there is human movement, abnormal sound, or abnormal vibration. This signal can be directly connected to various existing alarm devices in the elevator, thereby enabling trapped personnel to send automatic alarm signals to the duty room of the user unit, the elevator maintenance unit, emergency rescue agencies, etc., without actively operating any device." However, the device lacks a lighting structure. When the elevator malfunctions and the interior of the car is dark, it will cause panic among the trapped people, requiring lighting.

[0005] 2. Patent document CN103420244A discloses an automatic alarm device for elevator car leveling misalignment. The protected claim is that "an infrared receiver I is installed on the upper inner wall of the elevator hall door opening, an infrared receiver II is installed on the lower inner corner of the elevator hall door opening, and infrared transmitters I and II are installed on the elevator shaft wall opposite the elevator hall door opening at positions corresponding to the infrared receivers I and II. The infrared receivers I and II are connected to the alarm circuit; the elevator hall door frame is equipped with an elevator hall door opening detection switch, and the alarm circuit is equipped with a main control chip. The infrared receivers I and II and the detection switch are respectively connected to the main control chip through wires, and the main control chip is also connected to the alarm device through wires; when the elevator hall door is opened and the elevator car is leveled misaligned, the alarm device will be activated automatically to warn users who are about to enter the elevator car to stop, thereby reducing safety risks." However, when trapped people are in a state of tension, their breathing rate is faster, and coupled with the closed elevator car, they are prone to hypoxia for a long time, requiring oxygen supply.

[0006] 3. Patent document CN107010505A discloses an elevator car door status detection alarm device and method based on an acceleration sensor. The protected claim "includes an exhaust gas treatment tower, an exhaust gas inlet pipe, an exhaust gas outlet pipe, a reaction tower support frame, and a treated gas outlet pipe. The outer wall of the exhaust gas inlet pipe is embedded and connected to the inner wall of the exhaust gas treatment tower, the outer wall of the exhaust gas treatment tower is welded to the inner side wall of the reaction tower support frame, and the outer walls of the treated gas outlet pipe and the exhaust gas outlet pipe are embedded and connected to the inner wall of the exhaust gas treatment tower. This invention, by combining a sealing push block and a heating regulating cavity, increases the temperature of the treated liquid inside the main spray pipe, making the molecular reaction more active and allowing the treated liquid to react more fully with the industrial waste gas. The combination of an airflow guide block and an air inlet pipe ensures that the gas entering the exhaust gas outlet pipe can be evenly distributed, and the filter column set inside the air inlet pipe can effectively filter out larger particles in the industrial waste gas." However, most existing elevators rely on automatic alarms, and trapped personnel cannot independently call for help, which is inconvenient.

[0007] 4. Patent document CN210214458U discloses an elevator car accidental movement alarm device. The protected claim "includes an elevator control cabinet, the device further includes: a signal acquisition unit and a measurement unit; the measurement unit is installed inside the elevator car, the signal acquisition unit is set on the back panel of the elevator control cabinet, the measurement unit includes: an acceleration sensor, a first microprocessor, and a first wireless communication module, the signal acquisition unit includes: a car door position switch, an elevator door lock circuit detection circuit, a second microprocessor, an audible and visual alarm, and a second wireless communication module, the car door position switch, the elevator door lock circuit detection circuit, the audible and visual alarm, and the second wireless communication module are all connected to the second microprocessor, the elevator door lock circuit detection circuit is connected to the elevator control cabinet, and the first wireless communication module communicates wirelessly with the second wireless communication module; it can effectively alarm for accidental movement of the elevator car when the elevator door opens and passengers get on and off, thereby ensuring the safety of elevator use." However, most existing elevators lack a temperature control structure, and when a malfunction occurs, they cannot control the temperature inside the car, which is inconvenient. Summary of the Invention

[0008] The purpose of this invention is to provide a linkage-type emergency alarm device for elevator cars to solve the problems mentioned in the background art, such as the lack of lighting structure, lack of oxygen supply structure, lack of autonomous rescue structure, and lack of temperature control structure.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a linkage-type emergency alarm device for elevator cars, comprising a housing, a supplementary light slot, an air detection box, and a third cavity, wherein the top of the housing is provided with a supplementary light slot, and a lifting rod is installed through the bottom wall of the inner wall of the supplementary light slot;

[0010] The outer wall of the lifting rod is provided with a gear groove, the bottom of the supplementary lighting groove is equipped with a motor, the output end of the motor is equipped with a drive gear, and the drive gear meshes with the gear groove. The top of the lifting rod is equipped with a circuit board, the top of the circuit board is equipped with multiple LED lights, and the top of the circuit board is equipped with a protective cover.

[0011] An air detection chamber is installed on the outer wall of the box. A first cavity is installed on the top wall of the box. A second cavity is installed on the inner wall of the box. A third cavity is installed on the bottom wall of the box. A fourth cavity is installed on the bottom wall of the box. A linkage box is installed on the inner wall of the first cavity. A detection chamber is installed on the inner wall of the air detection chamber. A photosensitive sensor is installed on the top of the box.

[0012] Preferably, a baffle plate is installed through the outer wall of the supplementary lighting slot, a first spring is installed around the outer wall of the baffle plate, and a roller is installed at one end of the baffle plate.

[0013] Preferably, a light-transmitting plate is installed on the inner top wall of the photosensor, a support plate is installed on the inner bottom wall of the photosensor, and multiple photoresistors are installed on the top of the support plate.

[0014] Preferably, the air detection box has an air inlet at the top, a power chamber installed on the inner wall of the air detection box, two sets of first air pumps installed on the top wall of the power chamber, an air inlet pipe installed at the input end of the first air pump, one end of the air inlet pipe connected to the air inlet, two sets of air outlet pipes installed at the output end of the first air pump, and the bottom of the air outlet pipe extends out of the bottom of the fixing plate. Control valves are fitted on the outer walls of both the air outlet pipe and the air inlet pipe.

[0015] Preferably, a weight sensor is installed on the inner bottom wall of the detection chamber, a fixing groove is installed on the top of the weight sensor, a detection tube is installed on the inner top wall of the fixing groove, and the top of the detection tube is connected to the outlet pipe of the first air pump. An absorption chamber is installed on the outer wall of the detection chamber, and the inside of the absorption chamber is filled with an absorbent liquid. A conversion chamber is installed on the inner bottom wall of the air detection box, and two sets of second air pumps are installed on the inner bottom wall of the conversion chamber. An air inlet pipe is installed at the input end of the second air pump, and one end of the air inlet pipe is connected to the outer wall of the detection tube. An air outlet pipe is installed at the output end of the second air pump, and one end of the air outlet pipe extends into the interior of the absorption chamber. Control valves are fitted on the outer walls of both the air inlet pipe and the air outlet pipe.

[0016] Preferably, a partition plate is installed on the top wall of the fourth cavity, and the two side chambers of the partition plate are respectively filled with reactant. An electric telescopic rod is installed on the top wall of the fourth cavity, and the bottom of the electric telescopic rod is connected to the top of the partition plate. A first fan is installed on the inner wall of the fourth cavity, and an air inlet pipe is installed at the input end of the first fan, with one end of the air inlet pipe extending into the interior of the reactant chamber.

[0017] Preferably, a push rod is installed through the outer wall of the second cavity, a return spring is installed around the outer wall of the push rod, a conductive groove is installed on the inner wall of the second cavity, a conductive rod is installed at one end of the push rod, a No. 1 battery is installed on the inner bottom wall of the second cavity, a buzzer is installed on the inner rear wall of the second cavity, and a loudspeaker is installed on the inner wall of the second cavity.

[0018] Preferably, a second fan is installed on the bottom wall of the third cavity, a fixed column is installed on the top wall of the third cavity, an electric heating wire is installed around the outer wall of the fixed column, and ventilation holes are provided on the outer wall of the third cavity.

[0019] Preferably, an electric push rod is installed on the inner bottom wall of the first cavity, a lifting block is installed on the top of the electric push rod, a camera is installed on the inner wall of the lifting block, a second battery is installed on the inner bottom wall of the first cavity, and a display screen is installed on the front of the box.

[0020] Preferably, a motor is installed on the outer wall of the linkage box, and the output end of the motor extends into the interior of the linkage box. A rotating shaft is installed on the output end of the motor, and a metal rod is installed on the outer wall of the rotating shaft. A signal receiver is installed on the top of the motor. Multiple cables are installed on the inner top wall and inner bottom wall of the linkage box. A second spring is installed around the outer wall of the cable, and a conductive plate is installed on one end of the cable.

[0021] Preferably, the operating steps of the device are as follows:

[0022] S1. When the elevator malfunctions, the interior of the elevator car is dimly lit, and less light passes through the light-transmitting panel. This causes a change in the resistance of the photoresistor, which then starts the motor. The motor rotates, which drives the drive gear to rotate. The drive gear rotates, which moves the gear slot. The gear slot moves, which moves the lifting rod. The lifting rod moves upward, which moves the circuit board. The circuit board moves, which moves the protective cover upward. The protective cover comes into contact with the roller and then presses against the shielding plate, so that the shielding plate no longer blocks the protective cover, allowing the LED light to emit light outward and achieve the lighting function.

[0023] S2. When an elevator malfunctions, the air detection box begins to detect the air. It starts the first air pump, which delivers air from the elevator car through the outlet pipe to the detection tube. At this time, all control valves are closed, and the weight sensor detects the weight of the detection tube. Then, the second air pump is started, drawing the air from the detection tube into the absorption chamber. The absorbent liquid absorbs carbon dioxide from the air. After absorption, the control valves are adjusted so that the first air pump delivers the absorbed air back into the detection tube. The weight sensor detects the tube again, and the difference between the two weight readings is the mass of carbon dioxide. Since the volume of the detection tube is fixed, the carbon dioxide concentration can be calculated. When the carbon dioxide concentration is high, the electric telescopic rod shortens, causing the partition plate to rise. The two reactants react to produce oxygen. Then, the first fan is started, delivering the oxygen to the elevator car, thus providing oxygen supply.

[0024] S3. Trapped people in the elevator car can rhythmically tap the button. The button moves, causing the conductive rod to move. Then the conductive rod contacts the conductive groove, energizing the buzzer. The buzzer emits a sound through the loudspeaker to the outside of the elevator car, making it easier for trapped people to call for help.

[0025] S4. When it is necessary to cool down the interior of the elevator car, the second fan can be started. The second fan drives the airflow, allowing outside air to flow into the interior of the elevator car. The airflow can carry away some heat, thereby achieving the cooling function. When it is necessary to heat up, the heating wire can be started, and the second fan drives hot air to flow into the interior of the elevator car, thereby achieving the heating function.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] 1. This invention provides supplementary lighting by installing a photosensitive sensor and a supplementary lighting slot. When an elevator malfunctions, the brightness inside the elevator car is low, and less light passes through the light-transmitting plate, causing a change in the resistance of the photoresistor. Subsequently, the motor is started, and the rotation of the motor drives the drive gear to rotate. The rotation of the drive gear drives the gear slot to move, which in turn drives the lifting rod to move. The upward movement of the lifting rod drives the circuit board to move, and the movement of the circuit board drives the protective cover to move upward. The protective cover contacts the roller and then presses the shielding plate, so that the shielding plate no longer blocks the protective cover, allowing the LED light to emit light outward and achieve the lighting function.

[0028] 2. This invention utilizes an air detection box and a fourth chamber for both detection and oxygen supply. When an elevator malfunctions, the air detection box begins detecting air quality. It activates a first air pump, which draws air from the elevator car through an outlet pipe into the detection tube. At this point, all control valves are closed, and a weight sensor detects the weight of the detection tube. Then, a second air pump is activated, drawing air from the detection tube into an absorption chamber. The absorption liquid absorbs carbon dioxide from the air. After absorption, the control valves are adjusted so that the first air pump delivers the absorbed air back into the detection tube. The weight sensor detects the tube again, and the difference between the two weight readings represents the mass of carbon dioxide. Since the volume of the detection tube is fixed, the carbon dioxide concentration can be calculated. When the carbon dioxide concentration is high, the electric telescopic rod shortens, causing the partition plate to rise. The two reactants react to produce oxygen. Then, a first fan is activated, delivering the oxygen into the elevator car, thus providing oxygen supply.

[0029] 3. The invention, by installing a second cavity, facilitates trapped personnel to call for help independently. Trapped personnel in the elevator car can rhythmically tap the button, which moves the conductive rod, causing it to contact the conductive groove. The buzzer is then powered on and emits sound through the loudspeaker to the outside of the elevator car, facilitating trapped personnel to call for help independently.

[0030] 4. This invention allows for temperature control through the installation of a third cavity. When it is necessary to cool the interior of the elevator car, the second fan can be activated. The second fan drives airflow, allowing outside air to flow into the interior of the elevator car. This airflow can carry away some heat, thereby achieving the cooling function. When it is necessary to heat up, the heating wire can be activated, and the second fan drives hot air to flow into the interior of the elevator car, thereby achieving the heating function. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the external structure of the present invention;

[0032] Figure 2 This is a front view structural diagram of the present invention;

[0033] Figure 3 This is a schematic diagram of the photosensitive structure of the present invention;

[0034] Figure 4 This is a schematic diagram of the supplementary lighting groove structure of the present invention;

[0035] Figure 5 This is a schematic diagram of the air detection box structure of the present invention;

[0036] Figure 6 This is a schematic diagram of the second cavity structure of the present invention;

[0037] Figure 7 This is a schematic diagram of the linkage box structure of the present invention;

[0038] Figure 8 For the present invention Figure 2 Schematic diagram of the middle section.

[0039] In the diagram: 1. Box body; 101. First chamber; 102. Electric push rod; 103. Lifting block; 104. Camera; 105. No. 2 battery; 106. Display screen; 2. Photosensitive sensor; 201. Light-transmitting plate; 202. Support plate; 203. Photoresistor; 3. Light-filling slot; 301. Shielding plate; 302. First spring; 303. Roller; 4. Lifting rod; 401. Motor; 402. Circuit board; 403. LED light; 404. Protective cover; 5. Air detection box; 501. Air inlet; 502. Power chamber; 503. First air pump; 6. Detection chamber; 601. Weight sensor; 602. Fixing slot; 603. Detection tube; 604. Rotary... 605. Second suction pump; 606. Absorption chamber; 7. Second chamber; 701. Conductive groove; 702. Press rod; 703. Return spring; 704. Conductive rod; 705. Battery No. 1; 706. Buzzer; 707. Megaphone; 8. Fourth chamber; 801. Partition plate; 802. Electric telescopic rod; 803. First fan; 9. Third chamber; 901. Second fan; 902. Fixed column; 903. Heating wire; 904. Ventilation hole; 10. Linkage box; 1001. Motor; 1002. Signal receiver; 1003. Rotating shaft; 1004. Metal rod; 1005. Cable; 1006. Second spring; 1007. Conductive plate. Detailed Implementation

[0040] 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.

[0041] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0042] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0043] Example 1: Please refer to Figure 1 The present invention provides an embodiment of an elevator car linkage emergency alarm device, comprising a housing 1, a supplementary lighting slot 3, an air detection box 5, and a third cavity 9. The supplementary lighting slot 3 is provided on the top of the housing 1, and a lifting rod 4 is installed through the bottom wall of the inner wall of the supplementary lighting slot 3. The air detection box 5 is installed on the outer wall of the housing 1. A first cavity 101 is installed on the top wall of the inner wall of the housing 1. A second cavity 7 is installed on the inner wall of the housing 1. A third cavity 9 is installed on the bottom wall of the inner wall of the housing 1. A fourth cavity 8 is installed on the bottom wall of the inner wall of the housing 1. A linkage box 10 is installed on the inner wall of the first cavity 101. A detection cavity 6 is installed on the inner wall of the air detection box 5. A photosensitive sensor 2 is installed on the top of the housing 1. The housing 1 can protect the internal devices, the lifting rod 4 can be raised and lowered, and the supplementary lighting slot 3 can provide illumination.

[0044] Example 2: Please refer to Figure 2 , Figure 3 and Figure 4An embodiment of the present invention provides a linkage-type emergency alarm device for an elevator car. The outer wall of the lifting rod 4 has a gear groove. A motor 401 is installed at the bottom of the supplementary lighting groove 3. A drive gear is installed at the output end of the motor 401, and the drive gear meshes with the gear groove. A circuit board 402 is installed on the top of the lifting rod 4. Multiple LED lights 403 are installed on the top of the circuit board 402. A protective cover 404 is installed on the top of the circuit board 402. A baffle plate 301 is installed through the outer wall of the supplementary lighting groove 3. A first spring 302 is installed around the outer wall of the baffle plate 301. A roller 303 is installed at one end of the baffle plate 301. A light-transmitting plate 201 is installed on the inner top wall of the photosensitive sensor 2, and a support plate 2 is installed on the inner bottom wall of the photosensitive sensor 2. 02. Multiple photoresistors 203 are installed on the top of the support plate 202. When the elevator malfunctions, the brightness inside the elevator car is low, and less light passes through the light-transmitting plate 201, causing the resistance of the photoresistors 203 to change. Subsequently, the motor 401 is started. The rotation of the motor 401 drives the drive gear to rotate, which in turn moves the gear slot. The movement of the gear slot moves the lifting rod 4, which moves upward and moves the circuit board 402. The movement of the circuit board 402 moves the protective cover 404 upward. The protective cover 404 contacts the roller 303 and then presses the shielding plate 301, so that the shielding plate 301 no longer blocks the protective cover 404, allowing the LED light 403 to emit light outward and achieve the lighting function.

[0045] Example 3: Please refer to Figure 2 , Figure 5 and Figure 8An embodiment of the present invention provides a linkage-type emergency alarm device for an elevator car. An air inlet 501 is provided on the top of an air detection box 5. A power chamber 502 is installed on the inner wall of the air detection box 5. Two sets of first suction pumps 503 are installed on the inner top wall of the power chamber 502. An air inlet pipe is installed at the input end of each first suction pump 503, and one end of the air inlet pipe is connected to the air inlet 501. Two sets of air outlet pipes are installed at the output end of each first suction pump 503, and the bottom of the air outlet pipes extends out of the bottom of a fixing plate. Control valves are fitted onto the outer walls of both the air outlet pipes and the air inlet pipes. A weight sensor 601 is installed on the inner bottom wall of the detection chamber 6. A fixing groove 602 is installed on the top of the weight sensor 601. The inner top of the fixing groove 602... A detection tube 603 is installed on the wall, and the top of the detection tube 603 is connected to the outlet pipe of the first air pump 503. An absorption chamber 606 is installed on the outer wall of the detection chamber 6, and the inside of the absorption chamber 606 is filled with absorbent liquid. A conversion chamber 604 is installed on the inner bottom wall of the air detection box 5. Two sets of second air pumps 605 are installed on the inner bottom wall of the conversion chamber 604. An air inlet pipe is installed at the input end of the second air pump 605, and one end of the air inlet pipe is connected to the outer wall of the detection tube 603. An air outlet pipe is installed at the output end of the second air pump 605, and one end of the air outlet pipe extends into the interior of the absorption chamber 606. Control valves are fitted on the outer walls of both the air inlet pipe and the air outlet pipe. A partition plate 801 is installed on the top wall of the interior of the fourth chamber 8. The two side chambers of chamber 1 are filled with reactants. An electric telescopic rod 802 is installed on the inner top wall of chamber 4 (8), and the bottom of the electric telescopic rod 802 is connected to the top of the partition plate 801. A first fan 803 is installed on the inner wall of chamber 4 (8), and an air inlet pipe is installed at the input end of the first fan 803, with one end of the air inlet pipe extending into the interior of the reactant chamber. When the elevator malfunctions, the air detection box 5 starts detecting the air, activating the first air pump 503. The first air pump 503 delivers air from the elevator car to the detection tube 603 through the air outlet pipe. At this time, all control valves are closed, and the weight sensor 601 detects the weight of the detection tube 603. Subsequently, the second air pump 605 is activated. 05. Air from the detection tube 603 is pumped into the absorption chamber 606. The absorbent liquid absorbs carbon dioxide from the air. After absorption, the control valve is adjusted so that the first air pump 503 delivers the absorbed air back into the detection tube 603. The weight sensor 601 detects the detection tube 603 again. The difference between the two weights is the mass of carbon dioxide. Since the volume of the detection tube 603 is fixed, the concentration of carbon dioxide can be calculated. When the concentration of carbon dioxide is high, the electric telescopic rod 802 shortens, causing the partition plate 801 to rise. The two reactants react to produce oxygen. Then, the first fan 803 is started, and the first fan 803 delivers oxygen into the elevator car to achieve the oxygen supply function.

[0046] Example 4: Please refer to Figure 2 and Figure 6 This invention provides an embodiment of a linkage-type emergency alarm device for an elevator car. A push rod 702 is installed through the outer wall of a second cavity 7. A return spring 703 is installed around the outer wall of the push rod 702. A conductive groove 701 is installed on the inner wall of the second cavity 7. A conductive rod 704 is installed at one end of the push rod 702. A No. 1 battery 705 is installed on the inner bottom wall of the second cavity 7. A buzzer 706 is installed on the inner rear wall of the second cavity 7. A loudspeaker 707 is installed on the inner wall of the second cavity 7. Trapped personnel in the elevator car can rhythmically strike the push rod 702. The push rod 702 moves, causing the conductive rod 704 to move. Subsequently, the conductive rod 704 contacts the conductive groove 701, energizing the buzzer 706. The buzzer 706 emits sound through the loudspeaker 707 to the outside of the elevator car, facilitating self-rescue by trapped personnel.

[0047] Example 5: Please refer to Figure 2 The present invention provides an embodiment of a linkage-type emergency alarm device for an elevator car. A second fan 901 is installed on the bottom wall of the third cavity 9, and a fixed column 902 is installed on the top wall of the third cavity 9. An electric heating wire 903 is installed around the outer wall of the fixed column 902. A ventilation hole 904 is provided on the outer wall of the third cavity 9. When it is necessary to cool down the interior of the elevator car, the second fan 901 can be activated. The second fan 901 drives the air to flow, so that the outside air flows into the interior of the elevator car. The air flow can carry away some heat, thereby achieving the cooling function. When it is necessary to heat up, the electric heating wire 903 can be activated, and the second fan 901 drives the hot air to flow into the interior of the elevator car, thereby achieving the heating function.

[0048] Example 6: Please refer to Figure 2 and Figure 7An embodiment of the present invention provides a linkage-type emergency alarm device for an elevator car. An electric push rod 102 is installed on the inner bottom wall of a first cavity 101. A lifting block 103 is installed on the top of the electric push rod 102. A camera 104 is installed on the inner wall of the lifting block 103. A second-generation battery 105 is installed on the inner bottom wall of the first cavity 101. A display screen 106 is installed on the front of the housing 1. A motor 1001 is installed on the outer wall of the linkage box 10, and the output end of the motor 1001 extends into the interior of the linkage box 10. A rotating shaft 1003 is installed on the output end of the motor 1001. A metal rod 1004 is installed on the outer wall of the rotating shaft 1003. A signal receiver 1002 is installed on the top of the motor 1001. The inner top wall of the linkage box 10 and... Multiple cables 1005 are installed on the inner bottom wall. A second spring 1006 is installed around the outer wall of each cable 1005. A conductive plate 1007 is installed at one end of each cable 1005. When the photosensitive sensor 2 detects a malfunction in the elevator, the electric push rod 102 extends, causing the lifting block 103 and the camera 104 to rise and take pictures of the interior of the car, which are then saved. At the same time, the signal receiver 1002 receives the signal, and the motor 1001 rotates, causing the rotating shaft 1003 to rotate. The rotating shaft 1003 drives the metal rod 1004 to rotate. The rotating metal rod 1004 then contacts the conductive plate 1007, and the No. 2 battery 105 supplies power to the cable 1005. The circuit of the cable 1005 is connected, allowing all parts of the device to start working and achieve linkage.

[0049] Furthermore, the operating steps of this device are as follows:

[0050] S1. When the elevator malfunctions, the interior of the elevator car is dimly lit, and less light passes through the light-transmitting plate 201. As a result, the resistance of the photoresistor 203 changes, and the motor 401 is then started. The rotation of the motor 401 drives the drive gear to rotate, which in turn moves the gear slot. The movement of the gear slot moves the lifting rod 4, which in turn moves the circuit board 402. The movement of the circuit board 402 moves the protective cover 404 upward. The protective cover 404 comes into contact with the roller 303, which then presses against the shielding plate 301, so that the shielding plate 301 no longer blocks the protective cover 404, allowing the LED light 403 to emit light outward and achieve the lighting function.

[0051] S2. When an elevator malfunctions, the air detection box 5 begins to detect air quality. It starts the first air pump 503, which delivers air from the elevator car through the exhaust pipe to the detection tube 603. At this time, all control valves are closed, and the weight sensor 601 detects the weight of the detection tube 603. Then, the second air pump 605 is started, drawing the air from the detection tube 603 into the absorption chamber 606. The absorption liquid absorbs carbon dioxide from the air. After absorption, the opening and closing of the control valves are adjusted. The first air pump 503 delivers the absorbed air back into the detection tube 603. The weight sensor 601 detects the detection tube 603 again, and the difference between the two weights is the mass of carbon dioxide. Since the volume of the detection tube 603 is fixed, the concentration of carbon dioxide can be calculated. When the concentration of carbon dioxide is high, the electric telescopic rod 802 shortens, causing the partition plate 801 to rise. The two reactants react to produce oxygen, and then the first fan 803 is started. The first fan 803 delivers oxygen into the elevator car to achieve the oxygen supply function.

[0052] S3. Trapped personnel in the elevator car can rhythmically tap the push rod 702. The push rod 702 moves, causing the conductive rod 704 to move. Then, the conductive rod 704 contacts the conductive groove 701, energizing the buzzer 706. The buzzer 706 emits a sound to the outside of the elevator car through the loudspeaker 707, making it easier for trapped personnel to call for help.

[0053] S4. When it is necessary to cool down the interior of the elevator car, the second fan 901 can be activated. The second fan 901 drives the airflow, allowing outside air to flow into the interior of the elevator car. The airflow can carry away some heat, thereby achieving the cooling function. When it is necessary to heat up, the heating wire 903 can be activated, and the second fan 901 drives hot air to flow into the interior of the elevator car, thereby achieving the heating function.

[0054] Working principle: First, when the elevator malfunctions, the brightness inside the elevator car is low, and less light passes through the light-transmitting plate 201, causing a change in the resistance of the photoresistor 203. Subsequently, the motor 401 is started. The rotation of the motor 401 drives the drive gear to rotate, which in turn moves the gear slot. The movement of the gear slot moves the lifting rod 4, which moves upward and moves the circuit board 402. The movement of the circuit board 402 moves the protective cover 404 upward, and the protective cover 404 contacts the roller 303, which then presses against the shielding plate 301, so that the shielding plate 301 no longer blocks the protective cover 404, allowing the LED light 403 to emit light outward and achieve the lighting function.

[0055] Subsequently, when the elevator malfunctions, the air detection box 5 begins to detect the air. The first air pump 503 is activated, drawing air from the elevator car through the exhaust pipe into the detection tube 603. At this time, all control valves are closed, and the weight sensor 601 detects the weight of the detection tube 603. Then, the second air pump 605 is activated, drawing air from the detection tube 603 into the absorption chamber 606. The absorption liquid absorbs carbon dioxide from the air. After absorption, the opening and closing of the control valves are adjusted to... The first air pump 503 delivers the absorbed air back into the detection tube 603. The weight sensor 601 detects the detection tube 603 again, and the difference between the two weights is the mass of carbon dioxide. Since the volume of the detection tube 603 is fixed, the concentration of carbon dioxide can be calculated. When the concentration of carbon dioxide is high, the electric telescopic rod 802 shortens, causing the partition plate 801 to rise. The two reactants react to produce oxygen. Then, the first fan 803 is started, and the first fan 803 delivers oxygen into the elevator car to achieve the oxygen supply function.

[0056] Then, the trapped people inside the elevator car can rhythmically tap the button 702. The button 702 moves, causing the conductive rod 704 to move. Subsequently, the conductive rod 704 contacts the conductive groove 701, and the buzzer 706 is powered on. The buzzer 706 emits a sound to the outside of the elevator car through the loudspeaker 707, making it convenient for the trapped people to call for help.

[0057] Finally, when it is necessary to cool down the interior of the elevator car, the second fan 901 can be activated. The second fan 901 drives the airflow, allowing outside air to flow into the interior of the elevator car. The airflow can carry away some heat, thereby achieving the cooling function. When it is necessary to heat up, the heating wire 903 can be activated, and the second fan 901 drives hot air to flow into the interior of the elevator car, thereby achieving the heating function.

[0058] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A linkage-type emergency alarm device for elevator cars, comprising a housing (1), a supplementary lighting slot (3), an air detection box (5), and a third cavity (9), characterized in that: The top of the box (1) is provided with a supplementary lighting groove (3), and a lifting rod (4) is installed through the bottom wall of the supplementary lighting groove (3). The outer wall of the lifting rod (4) is provided with a gear groove, the bottom of the supplementary lighting groove (3) is equipped with a motor (401), the output end of the motor (401) is equipped with a drive gear, and the drive gear meshes with the gear groove. The top of the lifting rod (4) is equipped with a circuit board (402), the top of the circuit board (402) is equipped with multiple LED lights (403), and the top of the circuit board (402) is equipped with a protective cover (404). An air detection box (5) is installed on the outer wall of the box (1). A first cavity (101) is installed on the top wall of the box (1). A second cavity (7) is installed on the inner wall of the box (1). A third cavity (9) is installed on the bottom wall of the box (1). A fourth cavity (8) is installed on the bottom wall of the box (1). A linkage box (10) is installed on the inner wall of the first cavity (101). A detection cavity (6) is installed on the inner wall of the air detection box (5). A photosensitive sensor (2) is installed on the top of the box (1). A light-transmitting plate (201) is installed on the inner top wall of the photosensitive sensor (2), a support plate (202) is installed on the inner bottom wall of the photosensitive sensor (2), and a plurality of photoresistors (203) are installed on the top of the support plate (202). The air detection box (5) is provided with an air inlet (501) on the top. The inner wall of the air detection box (5) is equipped with a power chamber (502). The inner top wall of the power chamber (502) is equipped with two sets of first air pumps (503). The input end of the first air pump (503) is equipped with an air inlet pipe, and one end of the air inlet pipe is connected to the air inlet (501). The output end of the first air pump (503) is equipped with two sets of air outlet pipes, and the bottom of the air outlet pipe extends out of the bottom of the fixed plate. The outer walls of the air outlet pipe and the air inlet pipe are both fitted with control valves.

2. The linkage-type emergency alarm device for elevator cars according to claim 1, characterized in that: A shield (301) is installed through the outer wall of the supplementary lighting slot (3), a first spring (302) is installed around the outer wall of the shield (301), and a roller (303) is installed at one end of the shield (301).

3. The linkage-type emergency alarm device for elevator cars according to claim 1, characterized in that: A weight sensor (601) is installed on the inner bottom wall of the detection chamber (6). A fixing groove (602) is installed on the top of the weight sensor (601). A detection tube (603) is installed on the inner top wall of the fixing groove (602). The top of the detection tube (603) is connected to the outlet pipe of the first air pump (503). An absorption chamber (606) is installed on the outer wall of the detection chamber (6). The absorption chamber (606) is filled with an absorption liquid. A conversion chamber (604) is installed on the inner bottom wall of the air detection box (5). Two sets of second air pumps (605) are installed on the inner bottom wall of the conversion chamber (604). An air inlet pipe is installed at the input end of the second air pump (605). One end of the air inlet pipe is connected to the outer wall of the detection tube (603). An outlet pipe is installed at the output end of the second air pump (605). One end of the outlet pipe extends into the interior of the absorption chamber (606). Control valves are fitted on the outer walls of both the air inlet pipe and the outlet pipe.

4. The linkage-type emergency alarm device for elevator cars according to claim 1, characterized in that: The top wall of the fourth chamber (8) is equipped with a partition plate (801). The two side chambers of the partition plate (801) are filled with reactants. The top wall of the fourth chamber (8) is equipped with an electric telescopic rod (802), and the bottom of the electric telescopic rod (802) is connected to the top of the partition plate (801). The inner wall of the fourth chamber (8) is equipped with a first fan (803). The input end of the first fan (803) is equipped with an air inlet pipe, and one end of the air inlet pipe extends into the interior of the reactant chamber.

5. The linkage-type emergency alarm device for elevator cars according to claim 1, characterized in that: A push rod (702) is installed through the outer wall of the second cavity (7). A reset spring (703) is installed around the outer wall of the push rod (702). A conductive groove (701) is installed on the inner wall of the second cavity (7). A conductive rod (704) is installed at one end of the push rod (702). A No. 1 battery (705) is installed on the inner bottom wall of the second cavity (7). A buzzer (706) is installed on the inner rear wall of the second cavity (7). A loudspeaker (707) is installed on the inner wall of the second cavity (7).

6. The linkage-type emergency alarm device for elevator cars according to claim 1, characterized in that: The bottom wall of the third cavity (9) is equipped with a second fan (901), the top wall of the third cavity (9) is equipped with a fixed column (902), the outer wall of the fixed column (902) is surrounded by an electric heating wire (903), and the outer wall of the third cavity (9) is provided with a ventilation hole (904).

7. The linkage-type emergency alarm device for elevator cars according to claim 1, characterized in that: An electric push rod (102) is installed on the inner bottom wall of the first cavity (101), a lifting block (103) is installed on the top of the electric push rod (102), a camera (104) is installed on the inner wall of the lifting block (103), a second battery (105) is installed on the inner bottom wall of the first cavity (101), and a display screen (106) is installed on the front of the box (1).

8. The linkage-type emergency alarm device for elevator cars according to claim 1, characterized in that: The outer wall of the linkage box (10) is equipped with a motor (1001), and the output end of the motor (1001) extends into the interior of the linkage box (10). The output end of the motor (1001) is equipped with a rotating shaft (1003). The outer wall of the rotating shaft (1003) is equipped with a metal rod (1004). The top of the motor (1001) is equipped with a signal receiver (1002). The inner top wall and inner bottom wall of the linkage box (10) are equipped with multiple cables (1005). The outer wall of the cable (1005) is surrounded by a second spring (1006). One end of the cable (1005) is equipped with a conductive plate (1007).

9. A linkage-type emergency alarm device for an elevator car according to any one of claims 1-8, characterized in that, The working steps of this device are as follows: S1. When the elevator malfunctions, the brightness inside the elevator car is low, and less light passes through the light-transmitting plate (201), causing the resistance of the photoresistor (203) to change. Then the motor (401) is started. The motor (401) rotates, which drives the drive gear to rotate. The drive gear rotates, which drives the gear groove to move. The gear groove moves, which drives the lifting rod (4) to move. The lifting rod (4) moves upward, which drives the circuit board (402) to move. The circuit board (402) moves, which drives the protective cover (404) to move upward. The protective cover (404) contacts the roller (303) and then squeezes the shielding plate (301), so that the shielding plate (301) no longer blocks the protective cover (404), thereby causing the LED light (403) to emit light outward and realize the lighting function. S2. The air detection box (5) starts detecting air when the elevator malfunctions. It starts the first air pump (503), which delivers the air from the elevator car to the inside of the detection tube (603) through the air outlet pipe. At this time, all control valves are closed, and the weight sensor (601) detects the weight of the detection tube (603). Then, the second air pump (605) is started, which draws the air from the detection tube (603) into the absorption chamber (606). The absorption liquid absorbs the carbon dioxide in the air. After absorption, the opening and closing of the control valves are adjusted. The first air pump (503) delivers the absorbed air back into the detection tube (603). The weight sensor (601) detects the detection tube (603) again. The difference between the two weights is the mass of carbon dioxide. The volume of the detection tube (603) is fixed, so the concentration of carbon dioxide can be calculated. When the concentration of carbon dioxide is high, the electric telescopic rod (802) shortens, causing the partition plate (801) to rise. The two reactants react to produce oxygen. Then the first fan (803) is started, and the first fan (803) delivers oxygen into the elevator car to achieve the oxygen supply function. S3. The trapped person in the elevator car knocks on the button (702) in a regular manner. The button (702) moves and drives the conductive rod (704) to move. Then the conductive rod (704) contacts the conductive groove (701), the buzzer (706) is powered on, and the buzzer (706) emits a sound to the outside of the elevator car through the loudspeaker (707) to facilitate the trapped person to call for help. S4. When it is necessary to cool down the interior of the elevator car, start the second fan (901). The second fan (901) drives the air to flow, so that the outside air flows into the interior of the elevator car. The air flow takes away some heat, thereby achieving the cooling function. When it is necessary to heat up, start the heating wire (903). The second fan (901) drives the hot air to flow into the interior of the elevator car, thereby achieving the heating function.

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