Elevator anti-falling protection device

Abstract

The invention discloses an elevator anti-falling protection device which comprises a hoistway and a buffer structure arranged in a bottom pit in the hoistway, and further comprises an elevator car running in the hoistway, and a protection structure used for preventing falling is arranged in the elevator car; a guide sliding groove is formed in the inner side wall of the hoistway, the buffering structure comprises a supporting frame which is arranged in a crossed mode and slides in the guide sliding groove, a buffering spring and a damping assembly are arranged on the supporting frame, and the damping assembly comprises a supporting sleeve arranged on the supporting frame and a rubber column arranged in the supporting sleeve in a sliding mode. The multiple sets of buffering structures are arranged in the height direction, the buffering springs and the rubber columns of the upper set of supporting frames are connected with the buffering springs and the rubber columns of the lower set of supporting frames, and a supporting plate is arranged on the uppermost set of buffering springs and the rubber columns. The invention relates to the technical field of elevator equipment, and particularly provides an anti-falling protection device for an elevator.

Description

Technical Field

[0001] The present invention relates to the technical field of elevator equipment, and particularly to an elevator anti-falling protection device. Background Technique

[0002] An elevator is a box body that runs through rigid guide rails or fixed lines to realize the vertical lifting of people or goods in a building. Its main structures include a car, a traction system, a guiding device, a door system and other key components. In daily life, it solves the problem of going up and down stairs for the elderly, children, pregnant women and the disabled in multi-story residences, reduces the risk of falling, significantly improves home independence, and at the same time replaces stairs to reduce physical consumption. In scenarios such as office buildings and shopping malls, it shortens the travel time and improves daily efficiency.

[0003] Equipped with devices such as a speed limiter, a safety clamp, and a backup power supply to prevent the risk of falling; when the power is cut off, it will automatically slow down to the nearest floor to evacuate passengers. When the mechanical structure fails or the control system malfunctions, there will be a risk of elevator falling. In case of a sudden fall, you need to fix your body posture, protect yourself from the impact by tightly holding the handrail or supporting the side wall, and sticking closely to the car and bending your knees. However, the elevator itself lacks protection measures for passengers in case of emergencies. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that there is a lack of protection measures for passengers in the existing elevator car in the case of extreme falling.

[0005] To solve the above technical problem, the present invention provides the following technical solution: An elevator anti-falling protection device provided by this solution includes a hoistway and a buffer structure arranged in the bottom pit of the hoistway, and further includes an elevator car running in the hoistway. A protection structure for preventing falling is provided in the elevator car;

[0006] A guiding chute is provided on the inner side wall of the hoistway. The buffer structure includes a support frame arranged in a cross shape and sliding in the guiding chute. A buffer spring and a damping component are provided on the support frame. The damping component includes a support sleeve arranged on the support frame and a rubber column sliding in the support sleeve. Multiple groups of the buffer structure are arranged along the height direction. The buffer springs and rubber columns of the upper group of support frames are connected to those of the lower group of support frames. A support plate is provided on the buffer spring and rubber column of the uppermost group, and the support plate is in contact with the bottom of the elevator car.

[0007] Preferred Technical Solution 1: A fixing plate is provided in the elevator car. The bottom wall of the elevator car is open and a sliding plate slides inside. Four groups of damping springs are arranged between the fixing plate and the sliding plate, and the sliding plate is arranged at the connection with the support plate.

[0008] Preferred Technical Solution 2: Armrests are provided on both sides inside the elevator car, and a fixing component is provided on the rear wall. The fixing component includes a fixing frame provided on the rear wall inside the elevator car. A concave platform is provided on the side wall of the fixing frame, and a semi-circular fixing belt is rotatably provided inside. A protective pad is also provided in the concave platform.

[0009] Preferred Technical Solution 3: An airbag system is provided on the top wall inside the elevator car. The airbag system includes an airbag group, a gas generator, an induction module, and a control unit provided on the top wall inside the elevator car. The gas generator distributes gas to each airbag group in proportion through a flow dividing valve.

[0010] Preferred Technical Solution 4: A buffer rubber pad is also provided in the bottom pit of the hoistway.

[0011] Preferred Technical Solution 5: The stiffness coefficient of the buffer spring is K = 150 N / mm.

[0012] Preferred Technical Solution 6: The airbag group is a Kevlar fiber-reinforced bladder, and the surface is coated with a silicone wear-resistant layer.

[0013] Preferred Technical Solution 7: The control unit is provided with a three-stage trigger mechanism:

[0014] First-level response: When the leveling error > 12 cm, the airbag group is pre-charged to 50 kPa;

[0015] Second-level response: When the falling speed > 0.8 m / s, the airbag group is 50% filled;

[0016] Third-level response: When the acceleration > 1.8g or the distance from the bottom pit < 2.2 m, the airbag group is 100% filled.

[0017] For an elevator anti-falling protection device proposed by the present invention, the beneficial effects obtained by adopting the above structure are as follows:

[0018] (1) Multi-stage buffering significantly reduces the impact damage. By connecting the buffer spring (K = 150 N / mm) and the rubber column damping component in series through the cross support frame in the hoistway, and cooperating with the sliding plate and damping spring structure at the bottom of the car, the impact force is decomposed step by step, reducing the falling impact acceleration to the human tolerance range;

[0019] (2) The three-stage trigger airbag responds at different stages of falling. The pre-charge pressure prevents secondary collisions, 50% filling buffers the initial impact, and 100% filling forms the final protective layer. Combined with the fixing belt and the back protective pad, it ensures that the passengers maintain an impact-proof posture, improving the survival rate. Description of the Drawings

[0020] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention, and do not constitute a limitation to the present invention. In the drawings:

[0021] Figure 1 This is a schematic diagram of the overall structure of an anti - fall protection device for an elevator proposed by the present invention;

[0022] Figure 2 This is a perspective structural schematic diagram of an anti - fall protection device for an elevator proposed by the present invention;

[0023] Figure 3 is Figure 2 an enlarged schematic diagram of the partial structure of part A;

[0024] Figure 4 This is a side - view structural schematic diagram of an anti - fall protection device for an elevator proposed by the present invention.

[0025] Among them, 1, hoistway; 2, buffer structure; 3, elevator car; 4, guiding chute; 5, support frame; 6, buffer spring; 7, support sleeve; 8, rubber column; 9, support plate; 10, fixing plate; 11, sliding plate; 12, damping spring; 13, handrail; 14, fixing frame; 15, concave platform; 16, fixing belt; 17, protective pad; 18, airbag system; 19, buffer rubber pad. Specific embodiments

[0026] Next, the technical inventions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0027] It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings, and the words "inside" and "outside" respectively refer to the directions towards or away from the geometric center of a specific component.

[0028] Embodiment 1

[0029] As Figures 1 to 4As shown in the figure, the technical invention adopted by the present invention is as follows: A high-security sheet metal part production device includes a hoistway 1 and a buffer structure 2 provided in the pit at the bottom of the hoistway 1. It also includes an elevator car 3 running in the hoistway 1, and a protection structure for preventing falling is provided in the elevator car 3. A guiding chute 4 is provided on the inner side wall of the hoistway 1. The buffer structure 2 includes a support frame 5 arranged in a cross shape and sliding in the guiding chute 4. A buffer spring 6 and a damping component are provided on the support frame 5. The damping component includes a support sleeve 7 provided on the support frame 5 and a rubber column 8 sliding in the support sleeve 7. Multiple groups of the buffer structure 2 are arranged along the height direction. The buffer springs 6 and rubber columns 8 of the upper group of support frames 5 are connected to those of the lower group of support frames 5. A support plate 9 is provided on the buffer springs 6 and rubber columns 8 of the uppermost group, and the support plate 9 is in contact with the bottom of the elevator car 3. A buffer rubber pad 19 is also provided in the pit at the bottom of the hoistway 1. The stiffness coefficient of the buffer spring 6 is K = 150 N / mm.

[0030] As Figure 1 and Figure 2 shown in the figure, a fixing plate 10 is provided in the elevator car 3. The bottom wall of the elevator car 3 is open and a sliding plate 11 slides inside. Four groups of damping springs 12 are provided between the fixing plate 10 and the sliding plate 11. The sliding plate 11 is in contact with the support plate 9. When the elevator drops, the sliding plate 11 slides into the elevator car 3 to increase the buffer distance, and at the same time, the impact force is absorbed by the four groups of damping springs 12. Armrests 13 are provided on both sides inside the elevator car 3 and a fixing component is provided on the rear wall. The fixing component includes a fixing frame 14 provided on the rear wall inside the elevator car 3. A concave platform 15 is provided on the side wall of the fixing frame 14 and a semi-circular fixing belt 16 is rotatably provided inside. A protective pad 17 is also provided in the concave platform 15. During specific use, by inserting both arms into the two groups of fixing belts 16 and leaning against the protective pad 17, the fixing stability of the personnel during elevator fall is increased.

[0031] Embodiment 2

[0032] On the basis of Embodiment 1, as Figure 1 shown in the figure, in order to increase the protection of the top of the elevator car 3, a safety airbag system 18 is provided on the inner top wall of the elevator car 3. The safety airbag system 18 includes an airbag group, a gas generator, an induction module, and a control unit provided on the inner top wall of the elevator car 3. The gas generator distributes gas to each airbag group proportionally through a flow dividing valve.

[0033] The airbag group is a Kevlar fiber-reinforced bladder coated with a silicone wear-resistant layer on the surface. The control unit sets a three-level trigger mechanism:

[0034] First-level response: When the leveling error > 12 cm, the airbag group is pre-charged to 50 kPa;

[0035] Second-level response: When the falling speed > 0.8 m / s, the airbag group is 50% filled;

[0036] Level 3 response: When the acceleration > 1.8g or the distance from the bottom pit < 2.2m, the airbag group is 100% filled.

[0037] Specific operation process

[0038] Inspection before starting the device: Confirm that the support frames 5 of multiple sets of buffer structures in the hoistway slide smoothly without jamming in the guide chutes 4, test the contact sensitivity between the slide plate 11 at the bottom of the car and the support plate 9, ensure that the four sets of damping springs 12 have no pre-compression, and verify whether the response threshold of the three-level trigger mechanism of the airbag system 18 meets the technical parameters.

[0039] Emergency fall protection operation process: Passengers need to insert their arms into the fixing belts 16, press their backs tightly against the protective pads 17, and use the handrails 13 as auxiliary supports. The fixing belts are designed with a semi-circular rotation. A "click" locking sound needs to be heard to confirm the completion of fixing. When falling, the slide plate 11 automatically retracts into the car, absorbs the initial impact through the damping springs 12, the support frames 5 press down along the guide chutes 4, and the cross-shaped structure ensures uniform force. The rubber columns 8 and the buffer springs 6 work together to achieve a progressive deceleration with a stiffness coefficient K = 150 N / mm.

[0040] Level 1 response: When the leveling error > 12 cm, the airbag group is pre-pressurized to reduce the risk of secondary impact.

[0041] Level 2 response: When the falling speed > 0.8 m / s, the airbag group is 50% filled, and the Kevlar fiber layer prevents puncture.

[0042] Level 3 response: When the acceleration > 1.8g or the distance from the bottom pit < 2.2m, the airbag group is 100% filled, and the silicone coating reduces frictional damage.

[0043] Maintenance: After each trigger, the rubber columns 8 and the buffer springs 6 need to be replaced, the deformation of the support sleeve 7 is checked, and the airbag system needs to be reset with professional equipment.

[0044] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprises", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0045] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made in these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An elevator anti-falling protection device, characterized in that, It includes a hoistway (1) and a buffer structure (2) provided in the pit at the bottom of the hoistway (1), and also includes an elevator car (3) running in the hoistway (1). A protective structure for preventing falls is provided in the elevator car (3). A guiding chute (4) is provided on the inner side wall of the hoistway (1). The buffer structure (2) includes a support frame (5) arranged in a cross shape and sliding in the guiding chute (4). A buffer spring (6) and a damping component are provided on the support frame (5). The damping component includes a support sleeve (7) provided on the support frame (5) and a rubber column (8) sliding in the support sleeve (7). A plurality of groups of the buffer structure (2) are arranged in the height direction. The buffer springs (6) and rubber columns (8) of the upper group of the support frames (5) are connected to those of the lower group of support frames (5). A support plate (9) is provided on the buffer springs (6) and rubber columns (8) of the uppermost group. The support plate (9) is in contact with the bottom of the elevator car (3).

2. The elevator anti-falling protection device according to claim 1, characterized in that, A fixing plate (10) is provided in the elevator car (3). The bottom wall of the elevator car (3) is open and a sliding plate (11) slides inside. Four groups of damping springs (12) are arranged between the fixing plate (10) and the sliding plate (11). The sliding plate (11) is in contact with the support plate (9).

3. An elevator anti-falling protection device according to claim 2, characterized in that, Handrails (13) are provided on both sides inside the elevator car (3) and a fixing component is provided on the rear wall. The fixing component includes a fixing frame (14) provided on the rear wall inside the elevator car (3). A concave platform (15) is provided on the side wall of the fixing frame (14) and a semi-circular fixing belt (16) is rotatably provided inside. A protective pad (17) is also provided in the concave platform (15).

4. An elevator anti-falling protection device according to claim 3, characterized in that, An airbag system (18) is provided on the inner top wall of the elevator car (3). The airbag system (18) includes an airbag group, a gas generator, an induction module and a control unit provided on the inner top wall of the elevator car (3). The gas generator distributes gas to each airbag group proportionally through a flow dividing valve.

5. An anti-falling protection device for an elevator according to claim 1, characterized in that, A buffer rubber pad (19) is also provided in the pit at the bottom of the hoistway (1).

6. An anti-falling protection device for an elevator according to claim 1, characterized in that, The stiffness coefficient of the buffer spring (6) is K = 150 N / mm.

7. An elevator anti-falling protection device according to claim 4, characterized in that, The airbag group is a Kevlar fiber-reinforced bladder coated with a silicone wear-resistant layer on the surface.

8. An elevator anti-falling protection device according to claim 4, characterized in that, The control unit is provided with a three-level triggering mechanism: First-level response: When the leveling error > 12 cm, the airbag group is pre-pressurized at 50 kPa; Second-level response: When the falling speed > 0.8 m / s, the airbag group is filled by 50%; Third-level response: When the acceleration > 1.8g or the distance from the bottom pit < 2.2 m, the airbag group is filled by 100%.

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