Elevator anti-falling device and elevator

Abstract

The utility model relates to elevator technical field, more particularly, a kind of elevator anti-falling ladder device and elevator.Elevator anti-falling ladder device is arranged in elevator shaft, for protecting when elevator falls ladder, including deceleration device, bottom buffer air bag and speed sensor;Speed sensor is arranged on elevator, for detecting the running speed of elevator;Deceleration device is arranged on the side wall of elevator shaft, and with speed sensor signal connection, can when the elevator speed detected by speed sensor is greater than set threshold, the elevator is decelerated;Bottom buffer air bag is arranged at the bottom of elevator shaft, and with speed sensor signal connection, for the buffer of elevator that falls bottom.The utility model can decelerate and buffer when falling bottom to elevator, so as to reduce car descending speed, reduce the vibration when falling, a certain degree of protection is carried out to the personnel in car, and safety is improved.

Description

Technical Field

[0001] This utility model relates to the field of elevator technology, and more specifically, to an elevator anti-fall device and an elevator. Background Technology

[0002] Extensive research has been conducted in existing technologies to prevent elevators from falling, or to ensure the safety of people in elevators in the event of a fall.

[0003] However, none of the technical solutions can completely prevent the elevator from vibrating during a fall, which could potentially injure people inside the elevator. Utility Model Content

[0004] The purpose of this utility model is to provide an elevator anti-fall device and an elevator, which can effectively reduce the vibration of the elevator when it falls, thereby ensuring the safety of users.

[0005] In the first aspect, this utility model provides an elevator anti-fall device, which is installed in the elevator shaft and is used to protect the elevator when it falls. It includes a deceleration device, a bottom buffer airbag and a speed sensor.

[0006] The speed sensor is installed on the elevator to detect the elevator's operating speed;

[0007] The deceleration device is installed on the side wall of the elevator shaft and is connected to the speed sensor signal. It can decelerate the elevator when the elevator speed detected by the speed sensor is greater than a set threshold.

[0008] The bottom buffer airbag is located at the bottom of the elevator shaft and is connected to the speed sensor signal to buffer the elevator from falling to the bottom.

[0009] In an optional embodiment, the deceleration device includes a deceleration sidewall plate, a deceleration support, a deceleration support plate, and a driving device.

[0010] Both the deceleration support and the driving device are fixedly mounted on the deceleration side wall plate;

[0011] The deceleration support plate is connected to the deceleration support and can rotate around the deceleration support;

[0012] The driving device is connected to the deceleration support plate and is used to drive the deceleration support plate to rotate.

[0013] In an optional embodiment, a hidden groove is provided on the deceleration sidewall, and the deceleration support is disposed at the bottom of the hidden groove.

[0014] In an optional embodiment, the deceleration device further includes a supporting rotating shaft and a plurality of reinforcing rods;

[0015] The hidden groove is provided with sliding grooves on two opposite side walls, and the two ends of the supporting rotating shaft are respectively slidably disposed in the two opposite sliding grooves;

[0016] One end of the reinforcing rod is rotatably connected to the support rotation shaft, and the other end of the reinforcing rod is rotatably connected to the end of the deceleration support plate away from the deceleration support.

[0017] In an optional embodiment, the deceleration device further includes a passive deceleration frame;

[0018] The passive deceleration frame is fixedly installed on the outer wall of the elevator and can abut against the deceleration support plate after it is extended.

[0019] In an optional embodiment, a deceleration shaft is provided on the deceleration support, and the deceleration support plate is connected to the deceleration shaft.

[0020] In an optional embodiment, the number of the deceleration devices is multiple, and the multiple deceleration devices are arranged in a rectangular array with a set gap between adjacent deceleration devices.

[0021] In an optional implementation, side airbags are also included;

[0022] The side airbag is disposed in the gap of the deceleration device and is connected to the speed sensor signal.

[0023] In an optional implementation, a top airbag is also included;

[0024] The top airbag is located at the top of the elevator and is connected to the speed sensor signal.

[0025] Secondly, this utility model provides an elevator, including the elevator anti-fall device described in any of the foregoing embodiments.

[0026] The beneficial effects of this utility model embodiment are:

[0027] By installing a bottom buffer airbag at the bottom of the elevator shaft, a deceleration device on the side wall of the elevator shaft, and a speed sensor on the elevator, when an elevator falls, abnormal speed is detected, and the deceleration device and bottom buffer airbag are activated to slow down the elevator and buffer the fall. This reduces the descent speed of the car, reduces vibration during the fall, and provides a certain degree of protection for the people in the car, thus improving safety. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the airbag installation of the elevator anti-fall device provided in an embodiment of the present utility model;

[0030] Figure 2 This is a schematic diagram of the installation of the deceleration device of the elevator anti-fall device provided in an embodiment of the present utility model;

[0031] Figure 3 A schematic diagram of the elevator shaft sidewall of the elevator anti-fall device provided in this embodiment of the utility model;

[0032] Figure 4 A schematic diagram of the deceleration device of the elevator anti-fall device provided in this embodiment of the utility model (folded state).

[0033] Figure 5 A schematic diagram of the deceleration device of the elevator anti-fall device provided in this embodiment of the utility model (open state).

[0034] Icons: 1-Elevator; 2-Speed ​​sensor; 3-Bottom buffer airbag; 4-Side airbag; 5-Top airbag; 6-Elevator shaft; 7-Deceleration device; 8-Deceleration side wall panel; 9-Deceleration support plate; 10-Deceleration support; 11-Deceleration shaft; 12-Reinforcing rod; 13-Support rotating shaft; 14-Sliding groove. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0037] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0038] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and 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 utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0039] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0040] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] The following is combined Figures 1-5 The following describes some embodiments of the present invention in detail. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0042] Firstly, this utility model provides an elevator fall prevention device, installed in the elevator shaft 6, for protecting the elevator 1 from falling, such as... Figure 1 , Figure 2 and Figure 3As shown, the elevator includes a deceleration device 7, a bottom buffer airbag 3, and a speed sensor 2. The speed sensor 2 is installed on the elevator 1 and is used to detect the running speed of the elevator 1. The deceleration device 7 is installed on the side wall of the elevator shaft 6 and is connected to the speed sensor 2. It can decelerate the elevator 1 when the speed of the elevator 1 detected by the speed sensor 2 is greater than a set threshold. The bottom buffer airbag 3 is installed at the bottom of the elevator shaft 6 and is connected to the speed sensor 2. It is used to buffer the elevator 1 when it falls to the bottom.

[0043] In this embodiment, speed sensor 2 is installed on elevator 1 to monitor its operating speed in real time. Once the speed of elevator 1 exceeds a set safety threshold (i.e., the elevator 1 is falling), indicating that it is about to fall, speed sensor 2 sends an over-threshold alarm signal to deceleration device 7 and bottom buffer airbag 3. Deceleration device 7, located on the side wall of elevator shaft 6, activates upon receiving the alarm signal from speed sensor 2 to decelerate elevator 1. Simultaneously, bottom buffer airbag 3, located at the bottom of elevator shaft 6, rapidly inflates upon receiving the alarm signal from speed sensor 2. This buffers the elevator 1 in case deceleration device 7 fails to stop it, reducing the impact and minimizing the risk of injury or death.

[0044] In this embodiment, the deceleration device 7 can be connected to the side wall of the elevator shaft 6 in various ways, such as by bolt fixing, welding, or using a special bracket, to ensure the firmness and stability of its installation.

[0045] In this embodiment, the bottom cushioning airbag 3 can be inflated by rapidly releasing gas from a compressed air cylinder, or by generating gas using a gas generator upon receiving a signal. The shape and size of the bottom cushioning airbag 3 can be customized according to the actual space of the elevator shaft 6 and the size of the elevator 1 to ensure sufficient cushioning area and force during a fall. For example, for a larger elevator car, multiple airbags can be used in combination, or an expandable airbag structure can be designed to adapt to different cushioning needs.

[0046] In this embodiment, the speed sensor 2 can be a non-contact sensor, such as a photoelectric sensor or a magnetic sensor, to improve the accuracy of detection and response speed.

[0047] In a preferred embodiment, such as Figure 4 and Figure 5As shown, the deceleration device 7 includes a deceleration side wall plate 8, a deceleration support 10, a deceleration support plate 9, and a driving device; the deceleration support 10 and the driving device are both fixedly mounted on the deceleration side wall plate 8; the deceleration support plate 9 is connected to the deceleration support 10 and can rotate around the deceleration support 10; the driving device is connected to the deceleration support plate 9 and is used to drive the deceleration support plate 9 to rotate.

[0048] In this embodiment, the deceleration sidewall plate 8 serves as the base of the deceleration device 7 and is fixedly installed on the sidewall of the elevator shaft 6. Its material is typically high-strength steel to withstand the significant stress generated during deceleration. The deceleration support 10 and the drive device are both fixed to the deceleration sidewall plate 8. The deceleration support 10 supports the deceleration support plate 9 and allows it to rotate around the support. The drive device is responsible for driving the deceleration support plate 9 to rotate, thereby achieving the deceleration function of the elevator 1.

[0049] Specifically, in this embodiment, the deceleration support 10 can be designed with a bearing to reduce friction when the deceleration support plate 9 rotates, thereby improving the flexibility and stability of rotation. The drive device can be a motor drive, which transmits power to the deceleration support plate 9 through gear transmission or worm gear transmission, causing it to rotate around the deceleration support 10.

[0050] During rotation, the deceleration support plate 9 contacts the side wall of the elevator car 1, generating friction and thus decelerating the elevator 1. To improve the deceleration effect, wear-resistant materials or coatings that increase the coefficient of friction, such as rubber or high-friction composite materials, can be applied to the surface of the deceleration support plate 9. Simultaneously, the drive unit's control method can be linked to the speed sensor 2, precisely adjusting the rotation angle and force of the deceleration support plate 9 based on real-time changes in the elevator 1's speed to achieve optimal deceleration.

[0051] In this embodiment, the installation location and number of deceleration devices 7 can be optimized according to the length of the elevator shaft 6 and the operating speed of the elevator 1. For example, multiple sets of deceleration devices 7 can be installed on multiple side walls of the elevator shaft 6 to form a multi-layered deceleration and protection system, ensuring that the elevator 1 can be effectively decelerated when falling at different positions. For different types of elevators 1, such as high-speed elevators 1 or heavy-duty elevators 1, the structural strength of the deceleration device 7 and the power of the drive device can be adjusted to meet the corresponding deceleration requirements.

[0052] Specifically, in this embodiment, the multiple deceleration devices 7 are installed so that when the elevator 1 falls, the deceleration devices 7 on the side wall below the elevator car also open at the same time. This not only achieves a better multi-level deceleration effect, but also the lower deceleration devices 7 support the bottom of the car, resulting in a better deceleration effect.

[0053] It is understood that in this embodiment, the driving device can be the aforementioned motor, but it is not limited to a motor. It can also be other driving power devices, such as cylinders, hydraulic cylinders, etc., as long as it can drive the deceleration support plate 9 to rotate, so as to support and decelerate the elevator car 1.

[0054] In a preferred embodiment, a hidden groove is provided on the deceleration sidewall plate 8, and the deceleration support 10 is disposed at the bottom of the hidden groove.

[0055] In this embodiment, a hidden groove is provided on the deceleration side wall plate 8. Its main function is to accommodate the deceleration support 10 and the drive device, so that the deceleration support 10 can be hidden in the groove when not in operation, keeping the elevator shaft 6 wall flat. This arrangement is not only aesthetically pleasing, but also avoids protruding parts from interfering with the normal operation of the elevator 1 and reduces the risk of accidental collisions.

[0056] The shape and size of the concealed groove should match the outer profile of the deceleration support 10 to ensure that the deceleration support 10 can be tightly embedded within it. The structure of the groove bottom needs to be designed to be sufficiently robust to support the deceleration support 10 and the forces it bears. Sealing components, such as rubber sealing strips, can be installed at the edges of the concealed groove to prevent dust, debris, or moisture from entering the groove and affecting the normal operation of the deceleration support 10. Simultaneously, the opening of the concealed groove can be designed as a removable cover structure to facilitate the installation, adjustment, and maintenance of the deceleration support 10.

[0057] In a preferred embodiment, the deceleration device 7 further includes a supporting rotating shaft 13 and a plurality of reinforcing rods 12; sliding grooves 14 are provided on the two opposite side walls of the hidden groove, and the two ends of the supporting rotating shaft 13 are respectively slidably disposed in the two opposite sliding grooves 14; one end of the reinforcing rod 12 is rotatably connected to the supporting rotating shaft 13, and the other end of the reinforcing rod 12 is rotatably connected to the end of the deceleration support plate 9 away from the deceleration support 10.

[0058] In this embodiment, sliding grooves 14 are provided on the two opposite sidewalls of the hidden groove, and the two ends of the supporting rotating shaft 13 are respectively slidably disposed in these sliding grooves 14. One end of the reinforcing rod 12 is rotatably connected to the supporting rotating shaft 13, and the other end is rotatably connected to the end of the deceleration support plate 9 away from the deceleration support 10. When the deceleration support plate 9 rotates, the reinforcing rod 12 drives the supporting rotating shaft 13 to slide in the sliding grooves 14, thereby adjusting the support position and angle of the deceleration support plate 9.

[0059] The supporting rotating shaft 13 can be made of high-strength alloy steel to ensure its strength and rigidity under heavy loads. The surface of the sliding groove 14 should be treated with wear-resistant materials, such as hard chrome plating or spraying a wear-resistant coating, to extend its service life. The reinforcing rod 12 can be designed to be adjustable, for example, through a threaded connection or telescopic structure, so that its length can be adjusted during installation and commissioning, thereby optimizing the stress on the deceleration support plate 9.

[0060] In practical applications, this configuration of the supporting rotating shaft 13 and the reinforcing rod 12 enhances the stability and reliability of the deceleration device 7. When the elevator 1 is falling at high speed, the deceleration support plate 9 needs to withstand a large impact force. Through the synergistic effect of the reinforcing rod 12 and the supporting rotating shaft 13, these forces can be distributed to the deceleration side wall plate 8, which not only increases the support strength of the deceleration support plate 9 but also prevents the deceleration support plate 9 from being damaged due to excessive local stress. At the same time, the design of the sliding groove 14 allows the supporting rotating shaft 13 to move within a certain range, enabling the deceleration support plate 9 to automatically adjust its support angle according to the position and speed changes of the elevator 1, thereby improving the deceleration effect.

[0061] In addition, a limiting device can be installed in the sliding groove 14 to prevent excessive sliding of the supporting rotating shaft 13 from causing structural instability. For example, buffer blocks or limit switches can be installed at both ends of the sliding groove 14 to limit the range of movement of the supporting rotating shaft 13. This limiting measure can further improve the safety and reliability of the deceleration device 7.

[0062] Specifically, in this embodiment, the length of the sliding groove 14 is the maximum range of motion of the supporting rotating shaft 13. A reset spring can be provided at the upper or lower end of the sliding groove 14 so that the deceleration support plate 9 can adjust the rotation angle according to the force.

[0063] In a preferred embodiment, the deceleration device 7 further includes a passive deceleration frame; the passive deceleration frame is fixedly installed on the outer wall of the elevator 1 and can abut against the deceleration support plate 9 after it is extended.

[0064] In this embodiment, the passive deceleration frame is fixedly installed on the outer wall of the elevator 1. Its main function is to abut against the deceleration support plate 9 when the deceleration support plate 9 is opened, thereby providing additional reaction force and enhancing the deceleration effect.

[0065] The passive speed reducer is typically made of high-strength metal materials, such as aluminum alloy or high-strength steel, to ensure its strength and stability under impact. Its installation position should be precisely designed according to the structure of the elevator car 1 and the location of the speed reduction device 7 to ensure accurate contact with the passive speed reducer when the speed reduction support plate 9 is extended. The shape of the passive speed reducer can be designed as a groove or a flat surface to match the speed reduction support plate 9, thereby improving the contact area and force transmission efficiency.

[0066] In practical applications, the passive speed reducer not only improves deceleration efficiency but also serves as a redundant safety design. When other safety devices in elevator 1 malfunction, the passive speed reducer, in conjunction with the speed reduction support plate 9, can still provide a certain degree of deceleration protection.

[0067] In addition, the surface of the passive deceleration frame can be provided with anti-slip texture or coating to increase the friction between it and the deceleration support plate 9, prevent the two from sliding during contact, and thus improve the stability of deceleration.

[0068] To further improve the performance of the passive speed reducer, buffer elements, such as springs or hydraulic dampers, can be installed within it. When the speed reducer support plate 9 contacts the passive speed reducer, the buffer element can absorb some of the impact energy, reducing the impact force on the elevator car and speed reducer 7, and extending the service life of the equipment.

[0069] In a preferred embodiment, a deceleration shaft 11 is provided on the deceleration support 10, and the deceleration support plate 9 is connected to the deceleration shaft 11.

[0070] In this embodiment, a deceleration shaft 11 is provided on the deceleration support 10, and the deceleration support plate 9 is connected to the deceleration shaft 11. By rotating the deceleration shaft 11, the deceleration support plate 9 is driven to rotate, thereby realizing the deceleration operation of the elevator 1.

[0071] The design of the reduction shaft 11 needs to consider the torque and bending moment it will bear. Therefore, high-strength shaft material is usually used, and precision machining is performed to ensure that its cylindricity and surface roughness meet the requirements. The connection between the reduction support plate 9 and the reduction shaft 11 can be achieved by key connection, spline connection, or interference fit to ensure the connection is robust and the transmission is accurate. Sealing devices, such as oil seals or sealing rings, can also be installed at the connection to prevent lubricating grease leakage and to prevent external impurities from entering, ensuring the normal operation of the reduction shaft 11.

[0072] In this embodiment, the deceleration shaft 11 can be rotatably connected to the deceleration support plate 9 or the deceleration bracket via bearings. The arrangement of multiple bearings can ensure balance while reducing friction during rotation and improving the rotational stability of the deceleration support plate 9.

[0073] In practical applications, this connection method allows the deceleration support plate 9 to rotate flexibly around the deceleration shaft 11, thus quickly extending when the elevator 1 overspeeds, contacting the side wall of the elevator car and generating friction to decelerate. When the elevator 1 returns to normal speed, the deceleration support plate 9 can be retracted under the action of the drive device to avoid interfering with the normal operation of the elevator 1.

[0074] In addition, to improve the wear resistance and impact resistance of the deceleration support plate 9, a wear-resistant layer, such as a polyurethane coating or a ceramic coating, can be applied to its surface in contact with the car side wall of the elevator 1. These coatings can not only extend the service life of the deceleration support plate 9, but also reduce the noise and dust generated during friction, thus improving the environmental performance of the device.

[0075] In a preferred embodiment, there are multiple speed reduction devices 7, which are arranged in a rectangular array with a set gap between adjacent speed reduction devices 7.

[0076] In this embodiment, there are multiple deceleration devices 7, arranged in a rectangular array on the side wall of the elevator shaft 6, with a predetermined gap between adjacent deceleration devices 7. This layout can expand the effective range of the deceleration devices 7, ensuring that the elevator 1 can be effectively decelerated when falling at different positions.

[0077] The specific parameters of the rectangular array arrangement can be optimized based on the dimensions of the elevator shaft 6, the operating speed of the elevator 1, and the deceleration requirements. For example, multiple deceleration devices 7 can be evenly distributed vertically on each side wall of the elevator shaft 6, and the spacing between adjacent devices can be calculated and determined based on the displacement of the elevator 1 within the maximum deceleration distance.

[0078] In this way, it can be ensured that multiple deceleration devices 7 can work in sequence during the descent of elevator 1, providing continuous deceleration force and avoiding insufficient deceleration effect due to the short working time of a single deceleration device 7.

[0079] In practical applications, the coordinated operation of multiple deceleration devices 7 can significantly improve the safety of elevator 1 against falls. The drive device of each deceleration device 7 can be independently controlled according to the signal from the speed sensor 2, or coordinated uniformly through the central control system. For example, when the speed of elevator 1 exceeds a set threshold, the central control system can trigger the corresponding deceleration device 7 to start sequentially according to the position and speed of elevator 1, forming a relay-style deceleration effect.

[0080] In addition, the gap between adjacent deceleration devices 7 can prevent interference when adjacent deceleration support plates 9 are flipped and supported, and also provides installation space for the drive device.

[0081] In a preferred embodiment, the elevator anti-fall device further includes a side airbag 4; the side airbag 4 is disposed in the gap of the deceleration device 7 and is signal-connected to the speed sensor 2.

[0082] In this embodiment, the side airbag 4 is disposed in the gap between the multiple deceleration devices 7 and is connected to the speed sensor 2. When the elevator 1 falls and the speed exceeds a set threshold, the speed sensor 2 triggers the side airbag 4 to inflate. The inflated side airbag 4 fills the gap between the deceleration device 7 and the elevator 1, providing additional lateral buffering force for the elevator 1, and also providing a certain supporting force for the deceleration support plate 9.

[0083] The inflation system of the side airbag 4 can employ various methods, such as compressed air storage cylinders, gas generators, or external air supply. To ensure rapid inflation, the airbag's structural design should minimize resistance along the inflation path, for example, by using a large-diameter air inlet and optimized internal airflow channels. Simultaneously, the material of the side airbag 4 needs to possess good elasticity and durability to withstand repeated inflation and deflation processes, as well as the frictional forces when in contact with the elevator car 1 and the deceleration device 7.

[0084] Specifically, in this embodiment, the side airbag 4 effectively fills the gaps between the deceleration devices 7, preventing the elevator car of 1 from violently colliding with the elevator shaft 6 wall during its descent. Furthermore, the side airbag 4 can work in conjunction with the deceleration support plate 9. When the deceleration support plate 9 extends, the side airbag 4 provides additional lateral support, enhancing the deceleration effect. To further improve the cushioning performance of the side airbag 4, a partition structure can be provided inside the airbag, dividing it into multiple independent air chambers. This allows the cushioning force to gradually increase during inflation, making the deceleration process of the elevator 1 smoother.

[0085] It is understandable that the shape and size of the side airbag 4 can be customized according to the layout of the deceleration device 7 and the structure of the elevator shaft 6. For example, for the deceleration device 7 arranged in a rectangular array, the side airbag 4 can be designed as a matching elongated or fan-shaped shape to ensure that it can fit tightly against the side wall of the elevator car after inflation, providing uniform cushioning force.

[0086] In a preferred embodiment, the elevator anti-fall device further includes a top airbag 5; the top airbag 5 is disposed on the top of the elevator 1, and the top airbag 5 is signal-connected to the speed sensor 2.

[0087] In this embodiment, the top airbag 5 is installed on the top of the elevator 1 and connected to the speed sensor 2. When the elevator 1 falls and the speed exceeds a set threshold, the speed sensor 2 triggers the top airbag 5 to inflate.

[0088] Specifically, in this embodiment, the volume or diameter of the top airbag 5 is larger than the diameter of the elevator shaft 6, so that after the top airbag 5 is inflated, it can be stuck in the elevator shaft 6. This can both slow down the descending elevator car and counteract the vibration force when the elevator car of the elevator 1 rebounds after falling to the bottom, reducing the feeling of vibration, mitigating the impact force, and protecting passengers and elevator 1 equipment from top impact damage.

[0089] Specifically, in this embodiment, the installation position of the top airbag 5 should ensure that it deploys within sufficient space between the top of the elevator car and the top of the hoistway, and its inflated volume and shape should effectively cover the possible collision area. The inflation system of the top airbag 5 can share a gas supply system with the bottom cushioning airbag 3 and the side airbags 4 to simplify the structure of the device and reduce costs. For example, compressed air or gas generated by a gas generator can be distributed to different airbags by controlling a three-way valve or a solenoid valve.

[0090] In practical applications, the cushioning effect of the top airbag 5 can be optimized by adjusting its inflation pressure and volume. For example, when elevator 1 begins to descend, the top airbag 5 can be quickly inflated to a certain pressure to form an initial cushioning layer; as elevator 1 approaches the bottom of the shaft, the top airbag 5 can be further inflated to increase the cushioning force and cope with possible secondary impacts. Furthermore, the surface of the top airbag 5 can be coated with anti-slip and wear-resistant materials to prevent slippage or damage upon contact with the top of the shaft.

[0091] To improve the reliability and safety of the top airbag 5, a backup inflation system, such as a small backup gas generator or gas cylinder, can be installed to prevent malfunction in case the main inflation system fails. Furthermore, the mounting structure of the top airbag 5 can be designed to be detachable for regular inspection and maintenance, ensuring it functions properly in critical situations.

[0092] Secondly, this utility model also provides an elevator 1, which includes the elevator anti-fall device described in any of the above claims.

[0093] The beneficial effects of this utility model embodiment are:

[0094] By installing a bottom buffer airbag 3 below the elevator shaft 6, a deceleration device 7 on the side wall of the elevator shaft 6, and a speed sensor 2 on the elevator 1, when the elevator 1 falls, abnormal speed is detected and the deceleration device 7 and the bottom buffer airbag 3 are opened to decelerate the elevator 1 and buffer it when it falls to the bottom. This reduces the descent speed of the car, reduces the vibration during the fall, and provides a certain degree of protection for the people in the car, thus improving safety.

[0095] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An elevator fall prevention device, installed in the elevator shaft, for protecting the elevator in the event of a fall, characterized in that, Includes a deceleration device, bottom airbags, and speed sensors; The speed sensor is installed on the elevator to detect the elevator's operating speed; The deceleration device is installed on the side wall of the elevator shaft and is connected to the speed sensor signal. It can decelerate the elevator when the elevator speed detected by the speed sensor is greater than a set threshold. The bottom buffer airbag is located at the bottom of the elevator shaft and is connected to the speed sensor signal to buffer the elevator from falling to the bottom.

2. The elevator anti-fall device according to claim 1, characterized in that, The deceleration device includes a deceleration sidewall plate, a deceleration support, a deceleration support plate, and a drive device; Both the deceleration support and the driving device are fixedly mounted on the deceleration side wall plate; The deceleration support plate is connected to the deceleration support and can rotate around the deceleration support; The driving device is connected to the deceleration support plate and is used to drive the deceleration support plate to rotate.

3. The elevator anti-fall device according to claim 2, characterized in that, A hidden groove is provided on the deceleration side wall plate, and the deceleration support is located at the bottom of the hidden groove.

4. The elevator anti-fall device according to claim 3, characterized in that, The deceleration device also includes a supporting rotating shaft and multiple reinforcing rods; The hidden groove is provided with sliding grooves on two opposite side walls, and the two ends of the supporting rotating shaft are respectively slidably disposed in the two opposite sliding grooves; One end of the reinforcing rod is rotatably connected to the support rotation shaft, and the other end of the reinforcing rod is rotatably connected to the end of the deceleration support plate away from the deceleration support.

5. The elevator anti-fall device according to claim 2, characterized in that, The deceleration device also includes a passive deceleration frame; The passive deceleration frame is fixedly installed on the outer wall of the elevator and can abut against the deceleration support plate after it is extended.

6. The elevator anti-fall device according to claim 2, characterized in that, The deceleration support is provided with a deceleration shaft, and the deceleration support plate is connected to the deceleration shaft.

7. The elevator anti-fall device according to claim 1, characterized in that, The number of the deceleration devices is multiple, and the multiple deceleration devices are arranged in a rectangular array with a set gap between adjacent deceleration devices.

8. The elevator anti-fall device according to claim 7, characterized in that, It also includes side airbags; The side airbag is disposed in the gap of the deceleration device and is connected to the speed sensor signal.

9. The elevator anti-fall device according to claim 1, characterized in that, It also includes a top airbag; The top airbag is located at the top of the elevator and is connected to the speed sensor signal.

10. An elevator, characterized in that, Includes the elevator anti-fall device as described in any one of claims 1-9.

Images