Elevator entrapment ventilation device

Abstract

The utility model provides a kind of elevator trapped ventilation device.The elevator trapped ventilation device includes: fixed plate is installed on the inner wall of elevator by bolt and surrounds in the air vent of elevator;Support cylinder is installed in the bottom of the fixed plate;Shell is movably installed on the support cylinder and extends to the air vent of elevator;Motor is fixed in the shell;Fan blade shaft is flange-mounted on the output shaft of the motor;Dust screen is arranged on the top and bottom of the shell.The elevator trapped ventilation device provided by the utility model can actively ventilate to improve ventilation efficiency and safety when elevator trapped by setting motor and fan blade shaft, support cylinder is set to support shell, and limit mechanism is used to stabilize shell, which not only ensures the stability of shell, but also reduces disassembly and maintenance difficulty.

Description

Technical Field

[0001] This utility model relates to the field of elevator accessories technology, and in particular to a ventilation device for entrapped people in elevators. Background Technology

[0002] An elevator is a mechanical device used for vertical transportation of people or goods within a building. It typically consists of a car, guide rails, drive system, control system, and safety devices. It is electrically driven to move up and down and is widely used in residential buildings, office buildings, shopping malls, and other places to improve the efficiency of vertical transportation.

[0003] Current elevators are equipped with ventilation openings, which generate convection airflow to assist ventilation when the elevator is moving up and down. However, when the elevator is stopped, ventilation through the ventilation openings alone is inefficient and poses a safety risk when people are trapped.

[0004] Therefore, it is necessary to provide a new ventilation device for elevator entrapment to solve the above-mentioned technical problems. Utility Model Content

[0005] To address the technical problem that existing elevators have ventilation openings, which generate convection airflow to assist ventilation when the elevator is moving up and down, but the ventilation efficiency is low when the elevator is stopped, and the safety is low when people are trapped, this utility model provides an elevator entrapment ventilation device.

[0006] The elevator entrapment ventilation device provided by this utility model includes: a fixed plate that is bolted to the inner wall of the elevator and surrounds the elevator vent; a support cylinder installed at the bottom of the fixed plate; a housing that is movably installed on the support cylinder and extends into the elevator vent; a motor fixed in the housing; a fan blade shaft with a flange installed on the output shaft of the motor; and dustproof nets provided at the top and bottom of the housing.

[0007] Preferably, the support cylinder is provided with an adjustment port for providing a channel for installing the housing, and a limiting plate is fixed on the outer wall of the housing to contact the inner wall and the outer wall of the support cylinder. The limiting plate is U-shaped and is provided with a limiting mechanism for stabilizing the installation position of the housing.

[0008] Preferably, the limiting mechanism includes a cylinder fixed to the bottom of the limiting plate, an isolation plate installed inside the cylinder, a spring fixed to the top of the isolation plate, a connecting plate installed on the top of the spring, and a locking rod fixed to the connecting plate and extending into the limiting plate. The supporting cylinder is provided with a slot for accommodating the locking rod.

[0009] Preferably, the bottom of the connecting plate is equipped with a guide rod extending to the bottom of the isolation plate, the bottom of the guide rod is fixed with an iron block, and the bottom of the cylinder is provided with an operating port for providing an external magnet mounting channel.

[0010] Preferably, the bottom of the housing is provided with an LED light strip for providing illumination when people are trapped in the elevator, and the bottom of the housing is detachably fitted with a U-shaped lampshade to protect the LED light strip.

[0011] Preferably, the housing contains an emergency power supply, the emergency power supply is covered with a protective shell for protecting the emergency power supply, and the fan blade shaft is provided with multiple fan blades, all of which are made of carbon fiber.

[0012] Preferably, the top and bottom of the housing are provided with mounting ports, the dustproof net is covered with a support ring for supporting the dustproof net, the support ring is attached to the mounting port by hot melt adhesive, and the inner diameter of the operating port is between 1-2 cm.

[0013] Compared with related technologies, the elevator entrapment ventilation device provided by this utility model has the following beneficial effects: This utility model provides a ventilation device for elevator entrapment: By setting up a motor and fan blade shaft, active ventilation can be provided when people are trapped in the elevator, improving ventilation efficiency and safety. By setting up a support cylinder to support the shell and using a limit mechanism to stabilize the shell, not only is the stability of the shell guaranteed, but the difficulty of disassembly and maintenance is also reduced. Attached Figure Description

[0014] Figure 1 A front sectional view of a preferred embodiment of the elevator entrapment ventilation device provided by this utility model; Figure 2 This is a schematic diagram of the front sectional view of the limiting mechanism in this utility model; Figure 3 This is a top view of the support cylinder in this utility model. Figure 4 for Figure 1 The diagram shows an enlarged view of part A.

[0015] The following are the labels in the diagram: 1. Fixing plate; 2. Support cylinder; 3. Adjustment port; 4. Housing; 5. Limiting plate; 6. Limiting mechanism; 7. Dustproof net; 8. Motor; 9. Fan blade shaft; 10. Emergency power supply; 11. LED light strip; 12. U-shaped lampshade; 13. Cylinder body; 14. Isolation plate; 15. Spring; 16. Connecting plate; 17. Clamping rod; 18. Guide rod; 19. Iron block; 20. Operating port. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Please refer to the following: Figures 1-4,in, Figure 1 A front sectional view of a preferred embodiment of the elevator entrapment ventilation device provided by this utility model; Figure 2 This is a schematic diagram of the front sectional view of the limiting mechanism in this utility model; Figure 3 This is a top view of the support cylinder in this utility model. Figure 4 for Figure 1 The diagram shows an enlarged view of part A.

[0018] The elevator entrapment ventilation device includes: a fixed plate 1 bolted to the inner wall of the elevator and surrounding the elevator ventilation opening; a support cylinder 2 installed at the bottom of the fixed plate 1; a housing 4 movably installed on the support cylinder 2 and extending into the elevator ventilation opening; a motor 8 fixed inside the housing 4; a fan blade shaft 9 with a flange mounted on the output shaft of the motor 8; and dustproof nets 7 installed at the top and bottom of the housing 4. The fixed plate 1 provides stable support for subsequent components. The support cylinder 2 connects the fixed plate 1 and the housing 4, allowing the housing 4 to be movably installed for easy disassembly and maintenance of its internal structure. The motor 8 and the fan blade shaft 9 with a flange mounted on its output shaft achieve active ventilation when the elevator stops and people are trapped, improving ventilation efficiency and enhancing safety in the trapped state. The dustproof nets 7 installed at the top and bottom of the housing 4 prevent dust from entering the elevator, ensuring clean air inside the elevator without affecting ventilation.

[0019] The support cylinder 2 is provided with an adjustment port 3 for providing an installation channel for the housing 4. A limiting plate 5 is fixed on the outer wall of the housing 4, which contacts the inner and outer walls of the support cylinder 2. The limiting plate 5 is U-shaped and is provided with a limiting mechanism 6 for stabilizing the installation position of the housing 4. By setting the adjustment port 3 on the support cylinder 2, the installation channel for the housing 4 is provided. By fixing the U-shaped limiting plate 5 on the outer wall of the housing 4, which contacts the inner and outer walls of the support cylinder 2, the position of the housing 4 is initially restricted to prevent it from shaking randomly. Furthermore, by setting the limiting mechanism 6 on the limiting plate 5, the installation position of the housing 4 is made more stable. When the elevator vibrates during operation, it can also ensure that the housing 4 will not shift, thus ensuring the normal operation of the motor 8 and the fan blade shaft 9.

[0020] The limiting mechanism 6 includes a cylinder 13 fixed to the bottom of the limiting plate 5, an isolation plate 14 installed inside the cylinder 13, a spring 15 fixed to the top of the isolation plate 14, a connecting plate 16 installed on the top of the spring 15, and a locking rod 17 fixed on the connecting plate 16 and extending into the limiting plate 5. The support cylinder 2 is provided with a slot for accommodating the locking rod 17. By setting the cylinder 13, a stable installation space is provided for the internal components. The isolation plate 14 divides the cylinder 13 and supports the spring 15. The spring 15 is installed on the top of the isolation plate 14. Utilizing its elastic properties, the connecting plate 16 can move up and down. By setting the locking rod 17 in conjunction with the slot, the installation position of the housing 4 is stabilized. When the housing 4 is installed in place, the locking rod 17 is engaged in the slot under the action of the spring 15, making the housing 4 firmly fixed and not easy to loosen, effectively preventing the housing 4 from shifting due to vibration during elevator operation.

[0021] The bottom of the connecting plate 16 is equipped with a guide rod 18 extending to the bottom of the isolation plate 14. An iron block 19 is fixed to the bottom of the guide rod 18. The bottom of the cylinder 13 is provided with an operating port 20 for providing an external magnet mounting channel. By setting the guide rod 18 extending to the bottom of the isolation plate 14, the moving direction of the connecting plate 16 is guided, ensuring that the connecting plate 16 can only move up and down in a straight line under the action of the spring 15, avoiding its deviation and enhancing the stability of the limiting mechanism 6. The iron block 19 fixed to the bottom of the guide rod 18, together with the operating port 20 at the bottom of the cylinder 13, facilitates the operation of the limiting mechanism 6 from the outside. When it is necessary to disassemble or adjust the housing 4, the iron block 19 can be attracted by the external magnet through the operating port 20, overcoming the elastic force of the spring 15 to disengage the locking rod 17 from the locking slot, thereby facilitating the removal of the housing 4 and improving the convenience and efficiency of device maintenance.

[0022] The bottom of the housing 4 is provided with an LED light strip 11 for providing illumination when people are trapped in the elevator. A U-shaped lampshade 12 is detachably installed on the bottom of the housing 4 and is fitted over the LED light strip 11 to protect it. By setting the LED light strip 11 at the bottom of the housing 4, the effect of providing illumination when people are trapped in the elevator is achieved, creating a relatively bright environment for the trapped people, alleviating their tension and anxiety, and making it easier for the trapped people to observe the surrounding situation and communicate with the outside world. The U-shaped lampshade 12, which is detachably installed on the bottom of the housing 4 and fitted over the LED light strip 11, plays a role in protecting the LED light strip 11, preventing dust, debris and other objects from directly contacting the LED light strip 11, avoiding collision damage, and extending the service life of the LED light strip 11.

[0023] An emergency power supply 10 is installed inside the housing 4. The emergency power supply 10 is covered with a protective shell to protect it. The fan blade shaft 9 is equipped with multiple fan blades, all of which are made of carbon fiber. By installing the emergency power supply 10 inside the housing 4, the ventilation device and LED light strip 11 can still be powered even when the external power supply to the elevator is interrupted, ensuring the continuous operation of ventilation and lighting functions and improving the safety and comfort of trapped personnel. The protective shell protects the emergency power supply 10 from damage such as collisions and dust erosion, extending its service life. The carbon fiber material is lightweight and high-strength, resulting in lower energy consumption and higher efficiency when the fan blades rotate. At the same time, it can reduce the load on the motor 8 while ensuring ventilation.

[0024] The housing 4 has mounting openings at both the top and bottom. The dustproof net 7 is covered with a support ring for supporting the dustproof net 7. The support ring is attached to the mounting opening with hot melt adhesive. The inner diameter of the operating port 20 is between 1-2 cm. By providing mounting openings at both the top and bottom of the housing 4, a mounting position is provided for the dustproof net 7, allowing air to pass through smoothly while effectively blocking dust. The support ring on the outside of the dustproof net 7 provides stable support for the dustproof net 7, preventing it from deforming or being damaged due to long-term use or external force, thus ensuring the filtering effect of the dustproof net 7. The short inner diameter of the operating port 20 effectively prevents elevator passengers from directly operating the iron block 19 with their hands.

[0025] It is worth noting that the circuits, electronic components, and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0026] The working principle of the elevator entrapment ventilation device provided by this utility model is as follows: When in use, when the elevator is running normally, the motor 8 (taking PMM2802 as an example) and the LED light strip 11 are in standby mode, and the emergency power supply 10 is in charging mode. Air enters and exits the elevator ventilation port through the dustproof nets 7 at the top and bottom of the housing 4. The dustproof nets 7 prevent dust from entering the elevator. When the elevator stops and people are trapped, the emergency power supply 10 starts to supply power, the motor 8 starts and drives the fan blade shaft 9 mounted on the output shaft to rotate. The multiple carbon fiber fan blades on the fan blade shaft 9 rotate to achieve active ventilation. At the same time, the LED light strip 11 at the bottom of the housing 4 lights up to provide illumination. When it is necessary to disassemble or adjust the housing 4, the iron block 19 can be attracted by an external magnet through the operation port 20 at the bottom of the cylinder 13, and the spring force of the spring 15 can be overcome to make the locking rod 17 disengage from the locking slot and remove the housing 4.

[0027] Compared with related technologies, the elevator entrapment ventilation device provided by this utility model has the following beneficial effects: This utility model provides a ventilation device for elevator entrapment. By setting a motor 8 and a fan blade shaft 9, it can actively ventilate when people are trapped in the elevator, improving ventilation efficiency and safety. By setting a support cylinder 2 to support the shell 4 and using a limiting mechanism 6 to stabilize the shell 4, not only is the stability of the shell 4 guaranteed, but the difficulty of disassembly and maintenance is also reduced.

[0028] It should be noted that the device structure and accompanying drawings of this utility model mainly describe the principle of this utility model. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, those skilled in the art who understand the principle of the above utility model can clearly understand the specific details of its power mechanism, power supply system and control system.

[0029] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A ventilation device for entrapment in elevators, characterized in that, include: A mounting plate that is bolted to the inner wall of the elevator and surrounds the elevator ventilation opening; A support cylinder installed at the bottom of the fixed plate; A housing that is mounted on the support cylinder and extends into the elevator vent. The motor is fixed inside the housing; The flange is mounted on the fan blade shaft on the motor output shaft; Dust screens are installed at the top and bottom of the housing.

2. The elevator entrapment ventilation device according to claim 1, characterized in that, The support cylinder is provided with an adjustment port for providing a channel for installing the housing. A limiting plate is fixed on the outer wall of the housing, which contacts the inner and outer walls of the support cylinder. The limiting plate is U-shaped and is provided with a limiting mechanism for stabilizing the installation position of the housing.

3. The elevator entrapment ventilation device according to claim 2, characterized in that, The limiting mechanism includes a cylinder fixed to the bottom of the limiting plate, an isolation plate installed inside the cylinder, a spring fixed to the top of the isolation plate, a connecting plate installed on the top of the spring, and a locking rod fixed to the connecting plate and extending into the limiting plate. The supporting cylinder is provided with a slot for accommodating the locking rod.

4. The elevator entrapment ventilation device according to claim 3, characterized in that, The bottom of the connecting plate is equipped with a guide rod extending to the bottom of the isolation plate, and an iron block is fixed to the bottom of the guide rod. The bottom of the cylinder is provided with an operating port for providing an external magnet mounting channel.

5. The elevator entrapment ventilation device according to claim 1, characterized in that, The bottom of the housing is provided with an LED light strip for providing illumination when people are trapped in the elevator. A U-shaped lampshade is detachably installed on the bottom of the housing to protect the LED light strip.

6. The elevator entrapment ventilation device according to claim 2, characterized in that, An emergency power supply is provided inside the housing, and a protective shell is provided to protect the emergency power supply. Multiple fan blades are provided on the fan blade shaft, and all of the fan blades are made of carbon fiber.

7. The elevator entrapment ventilation device according to claim 4, characterized in that, The top and bottom of the housing are provided with mounting ports. The dustproof net is covered with a support ring for supporting the dustproof net. The support ring is attached to the mounting port by hot melt adhesive. The inner diameter of the operating port is between 1 and 2 cm.

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