Elevator weighing overload protection device
By using high-strength detection wires to monitor load changes in elevators, combined with early warning and automatic repair mechanisms, the problem of low accuracy in traditional elevator weighing devices is solved, enabling safe, timely, and efficient overload detection in elevators and ensuring passenger safety.
Patent Information
- Application Number
- CN202423162771.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2034-12-20
AI Technical Summary
Traditional elevator overload protection devices have low accuracy and are easily affected by wear and tear of mechanical parts and environmental factors, making it impossible to detect overload situations in a timely and effective manner, leading to safety hazards.
An overload protection mechanism is adopted, which uses the resistance change of a high-strength detection line to monitor the load in real time. The signal is transmitted to the detection and analysis device through a signal transmission line. Combined with an early warning and automatic repair mechanism, it ensures that the elevator brakes in time and operates safely before overload.
It enables precise sensing of elevator load, provides early warning of overload, ensures safe elevator operation, reduces safety risks caused by overload, lowers maintenance costs, and improves elevator efficiency and safety.
Smart Images
Figure CN223836842U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of elevator safety, and in particular to an elevator weighing overload protection device. Background Technology
[0002] As an indispensable vertical transportation tool in modern buildings, elevators have always received much attention in the field of safety technology. In the past few decades, with the vigorous development of the construction industry, the application scope of elevators has continued to expand, and they are widely used in various types of buildings, from residential buildings and commercial office buildings to industrial plants. Elevator safety technology covers many key aspects. Among the many aspects of elevator safety, weighing overload protection is a key area that cannot be ignored. Therefore, there is a special need for an elevator weighing overload protection device.
[0003] However, traditional elevator weighing overload protection devices mostly use simple mechanical lever structures. Although the principle is intuitive, this method has low accuracy and is easily affected by wear and deformation of mechanical parts and environmental factors, resulting in inaccurate weighing and inability to detect overload in a timely and effective manner. Utility Model Content
[0004] The purpose of this utility model is to provide an elevator weighing overload protection device to solve the problem that traditional elevator weighing overload protection devices mentioned in the background art mostly adopt a simple mechanical lever structure. Although the principle of this method is intuitive, the accuracy is low and it is easily affected by the wear and deformation of mechanical parts and environmental factors, resulting in inaccurate weighing and the inability to detect overload in a timely and effective manner.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an elevator weighing overload protection device, including a car, a sliding door connected to one side surface of the car, an audible alarm light fixedly connected to the inner surface of the car, a touch screen elevator control button provided on the inner surface of the car, and an overload protection mechanism provided on the upper surface of the car.
[0006] The overload protection mechanism includes a lower foundation fixing plate, a lower foundation fixing ring, a rigid chain link, an upper foundation fixing ring, an upper foundation fixing plate, a driving plane, a detection fixing plate, a buffer spring, an air spring, a connecting ring, a convenient buckle, a high-strength connecting rope, a detection steel ring, a high-strength detection line, a signal transmission line, and a detection and analysis device. The lower foundation fixing plate is fixedly connected to the upper surface of the car. The lower foundation fixing ring is fixedly connected to the upper surface of the lower foundation fixing plate. A rigid chain link is interlocked with the upper surface of the lower foundation fixing ring. The upper foundation fixing ring is interlocked with the upper surface of the rigid chain link. The upper foundation fixing plate is fixedly connected to the upper surface of the upper foundation fixing ring. A driving plane is fixedly connected to the square surface. A detection plate is fixedly connected to the lower surface of the driving plane. A buffer spring is fixedly connected to one side surface of the detection plate. An air spring is fixedly connected to one side surface of the detection plate. A connecting ring is fixedly connected to one side surface of the air spring. A convenient buckle is fixedly connected to one side surface of the connecting ring. A high-strength connecting rope is fastened to one side surface of the convenient buckle. A detection steel ring is fastened to one side surface of the convenient buckle. A high-strength detection line is fixedly connected to one side surface of the detection steel ring. A signal transmission line is fixedly connected to one side surface of the high-strength detection line. A detection and analysis device is fixedly connected to one side surface of the signal transmission line.
[0007] Preferably, two sets of the opening and closing doors are symmetrically slidably arranged on one side of the car, and the audible alarm light is located on the inner upper surface opposite the opening and closing doors in the car.
[0008] Preferably, the lower foundation fixing ring and the lower foundation fixing plate are fixedly connected to the upper surface of the car by six sets of bolts, and the upper foundation fixing plate and the upper foundation fixing ring are fixedly connected to one side surface of the driving plane by six sets of bolts.
[0009] Preferably, multiple sets of rigid links are provided between the lower foundation fixing ring and the upper foundation fixing ring, and they are interlocked with each other. The detection fixing plate and other mechanisms are provided at each of the four corners of the upper surface of the car.
[0010] Preferably, the driving plane is provided with a set of detection fixing plates and other mechanisms at each of the four corners of the car, and the connecting ring forms a telescopic structure with the detection fixing plates through the setting of buffer springs and air springs.
[0011] Preferably, the high-strength connecting rope is in a slack state under normal circumstances, and a set of detection steel rings is provided above each set of convenient buckles.
[0012] Preferably, the convenient buckle is connected to each other by the cooperation of a high-strength detection line and a detection steel ring, and a set of detection and analysis devices is provided on each side of the detection fixing plate.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This elevator weighing overload protection device, through the setting of the overload protection mechanism, when the elevator car begins to bear weight, due to the effect of gravity, the plane will have a downward displacement tendency, causing the air spring and buffer spring connected to the detection fixed plate to begin to be compressed, thereby driving the connecting ring and the convenient buckle connected to it to move. This movement causes the high-strength detection line to be stretched or undergo slight deformation. According to the resistance strain effect of the material, its resistance value changes, generating an electrical signal corresponding to the load. This electrical signal is transmitted to the detection and analysis device in real time through the signal transmission line. The detection and analysis device quickly calculates the current load situation in the car based on the pre-set correspondence between the resistance value and the load, and determines the remaining load capacity. The load information is sent to the screen above the touchscreen elevator control buttons for display, allowing passengers to intuitively understand the remaining load capacity of the car. As the number of people or goods in the car continues to increase, the load gradually approaches the elevator's rated overload limit. The tensile or deformable degree of the high-strength detection line also approaches its limit. The detection and analysis device continuously monitors the resistance change of the high-strength detection line. When the resistance value approaches the preset overload critical resistance value, the detection and analysis device immediately sends a warning signal to the elevator control system. After receiving the signal, the elevator control system activates the elevator's alarm system, reminding passengers that the car is full and no further entry is allowed through voice or visual alarms. At the same time, the screen above the touchscreen elevator control buttons displays a flashing red "Overload Warning" message. The system displays warning signs to further alert passengers that if the load continues to increase and exceeds the limit of the high-strength detection line, the line will break. At this point, the previously slack high-strength connecting rope will begin to stretch. Because the high-strength connecting rope has sufficient strength, it can withstand the overloaded weight inside the car, preventing a dangerous fall due to overloading and ensuring passenger safety. Simultaneously, the detection and analysis device will immediately detect the sudden interruption of the signal at the moment the detection line breaks, determining it as an overload fault and quickly sending this signal to the elevator control system. Upon receiving the signal, the elevator control system will immediately take emergency braking measures, stopping the elevator while keeping the doors open to ensure passenger safety. Once fully evacuated, the audible alarm lights continuously emit loud alarms and begin flashing to attract the attention of surrounding personnel and warn of the elevator's dangerous condition. Furthermore, the elevator control system automatically triggers a communication mechanism with maintenance personnel, sending detailed data such as fault information and elevator location via the internal communication system to notify maintenance personnel to arrive as soon as possible for repairs. This ensures the elevator can return to normal operation after the fault is resolved, guaranteeing the safety of subsequent passengers. Traditional methods are susceptible to wear and tear on mechanical parts and environmental factors, leading to delayed or inaccurate detection. This design, however, utilizes resistance changes in high-strength detection lines to accurately sense load changes, providing early warnings when approaching overload, instantly identifying and braking when overloaded, and automatically reporting a repair request.This greatly improves the timeliness and effectiveness of overload detection. Attached Figure Description
[0014] Figure 1 This is a side view of the appearance structure of this utility model;
[0015] Figure 2 This is a schematic diagram of the internal structure of this utility model;
[0016] Figure 3 This is a schematic diagram of the overload protection mechanism in this application.
[0017] Figure 4 This is a schematic diagram of the central support chain structure of this practical application;
[0018] Figure 5 This is a schematic diagram of the overall structure of the practical overload protection mechanism.
[0019] In the diagram: 1. Elevator car; 2. Door opener / closer; 3. Audible alarm light; 4. Touchscreen elevator control buttons; 5. Overload protection mechanism; 501. Lower foundation fixing plate; 502. Lower foundation fixing ring; 503. Rigid chain link; 504. Upper foundation fixing ring; 505. Upper foundation fixing plate; 506. Drive plane; 507. Detection fixing plate; 508. Buffer spring; 509. Air spring; 510. Connecting ring; 511. Convenience buckle; 512. High-strength connecting rope; 513. Detection steel ring; 514. High-strength detection line; 515. Signal transmission line; 516. Detection and analysis device. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Please see Figure 1-4 This utility model provides a technical solution: an elevator weighing overload protection device, including a car 1, a sliding door 2 connected to one side surface of the car 1, an audible alarm light 3 fixedly connected to the inner surface of the car 1, a touch screen elevator control button 4 provided on the inner surface of the car 1, and an overload protection mechanism 5 provided on the upper surface of the car 1.
[0022] The overload protection mechanism 5 includes a lower foundation fixing plate 501, a lower foundation fixing ring 502, a rigid chain link 503, an upper foundation fixing ring 504, an upper foundation fixing plate 505, a driving plane 506, a detection fixing plate 507, a buffer spring 508, an air spring 509, a connecting ring 510, a convenient buckle 511, a high-strength connecting rope 512, a detection steel ring 513, a high-strength detection line 514, a signal transmission line 515, and a detection and analysis device 516. The lower foundation fixing plate 501 is fixedly connected to the upper surface of the car 1. A lower foundation fixing ring 502 is fixedly connected to the upper surface of the fixed plate 501. A rigid link 503 is interlocked with the upper surface of the lower foundation fixing ring 502. An upper foundation fixing ring 504 is interlocked with the upper surface of the rigid link 503. An upper foundation fixing plate 505 is fixedly connected to the upper surface of the upper foundation fixing ring 504. A driving plane 506 is fixedly connected to the upper surface of the upper foundation fixing plate 505. A detection fixing plate 507 is fixedly connected to the lower surface of the driving plane 506. A buffer spring is fixedly connected to one side surface of the detection fixing plate 507. 508. An air spring 509 is fixedly connected to one side of the detection mounting plate 507. A connecting ring 510 is fixedly connected to one side of the air spring 509. A convenient buckle 511 is fixedly connected to one side of the connecting ring 510. A high-strength connecting rope 512 is fastened to one side of the convenient buckle 511. A detection steel ring 513 is fastened to one side of the convenient buckle 511. A high-strength detection line 514 is fixedly connected to one side of the detection steel ring 513. A signal transmission line 515 is fixedly connected to one side of the high-strength detection line 514. A detection and analysis device 516 is fixedly connected to one side surface of the signal transmission line 515. Through the arrangement of the lower foundation fixing plate 501, lower foundation fixing ring 502, rigid chain link 503, upper foundation fixing ring 504, upper foundation fixing plate 505, driving plane 506, detection fixing plate 507, buffer spring 508, air spring 509, connecting ring 510, convenient buckle 511, high-strength connecting rope 512, detection steel ring 513, high-strength detection line 514, signal transmission line 515, and detection and analysis device 516, in the car 1... When bearing weight, the plane 506 compresses the air spring 509 and the buffer spring 508, causing the connecting ring 510 and the convenient buckle 511 to deform the high-strength detection line 514, resulting in a change in resistance. The electrical signal is transmitted to the detection and analysis device 516 via the signal transmission line 515. The device calculates the load and sends the remaining load information to the screen above the touch-screen elevator control button 4. When the load approaches the overload limit, the detection device 516 detects that the resistance is close to the critical value and issues a warning signal. The elevator control system activates the alarm, and the screen above the touch-screen button 4 displays "Overload Warning". If the load exceeds the limit and the detection line 514 breaks, the high-strength connecting rope 512 stretches to prevent the car 1 from falling. The detection device 516 determines the fault and transmits a signal. The elevator control system brakes and opens / closes the door 2.The audible alarm light flashes and automatically contacts maintenance personnel. This design utilizes a 514-channel detector to accurately measure load changes, providing early warnings, immediate braking, and automatic repair alerts. This effectively improves the timeliness and accuracy of overload detection, ensuring safe elevator operation, providing passengers with a reliable riding environment, reducing safety risks caused by overload, enhancing elevator stability and reliability, reducing maintenance costs and downtime, and improving elevator efficiency and safety.
[0023] Furthermore, two sets of sliding doors 2 are symmetrically installed on one side of the car 1. The audible alarm light 3 is installed on the inner upper surface opposite the sliding doors 2 in the car 1. With the installation of the audible alarm light 3, when in use, whether it is a passenger who has just entered the car or other passengers in the car, they can see the flashing light and hear the alarm sound immediately, obtain alarm information in time, and make corresponding reactions. This effectively avoids potential dangers caused by passengers not noticing the alarm in time, and enhances the safety guarantee capability of the elevator.
[0024] Furthermore, the lower foundation fixing ring 502 and the lower foundation fixing plate 501 are fixedly connected to the upper surface of the car 1 by six sets of bolts, and the upper foundation fixing plate 505 and the upper foundation fixing ring 504 are fixedly connected to one side surface of the driving plane 506 by six sets of bolts. Through the setting of the foundation fixing plate 505 and the upper foundation fixing ring 504, in use, the lower foundation fixing ring 502 and the lower foundation fixing plate 501 are fixed to the upper surface of the car 1 by six sets of bolts, and the upper foundation fixing plate 505 and the upper foundation fixing ring 504 are connected to the driving plane 506. This multi-bolt connection method can provide strong fastening force. During the operation of the elevator, especially when the car 1 frequently starts, stops, accelerates and decelerates, forces in various directions will be generated. The stable connection can ensure that the overload protection mechanism will not loosen or shift due to these forces, ensuring the stability of the overload protection device structure, thereby ensuring the safe operation of the elevator.
[0025] Furthermore, multiple sets of rigid chain links 503 are arranged between the lower foundation fixing ring 502 and the upper foundation fixing ring 504, and they are interlocked with each other. The detection fixing plate 507 and other mechanisms are arranged at each of the four corners of the upper surface of the car 1. Through the arrangement of rigid chain links 503, this structure can evenly distribute the force to each chain link during use. Compared with a single-point force structure, this distributed force transmission method can effectively reduce local stress concentration and avoid damage to components due to excessive pressure at a certain point. At the same time, the connection between the chain links can play a buffering role to a certain extent, absorbing the impact force generated by load changes, acceleration or deceleration during elevator operation, thereby protecting the structural integrity of the entire overload protection device and the elevator car.
[0026] Furthermore, the four corners of the car 1 are equipped with a set of detection and fixing plates 507, and the connecting ring 510 forms a telescopic structure with the detection and fixing plates 507 through the setting of buffer springs 508 and air springs 509. Through the setting of springs 508 and air springs 509, during use, the buffer spring 508 can quickly generate elastic deformation when the load changes, absorbing the instantaneous impact force. For example, when the elevator starts or stops quickly or when passengers enter or exit the car 1 and generate a large impact force, the buffer spring 508 can effectively reduce the impact force on the device and the structure of the car 1. The air spring 509 has good elasticity and adjustability. It can adaptively adjust its elastic coefficient according to the size and speed of load change, providing stable buffering and support under long-term load action, and the buffering effect can be optimized by adjusting the air pressure.
[0027] Furthermore, the high-strength connecting rope 512 is in a slack state under normal circumstances. Each set of detection steel rings 513 is set above each set of convenient buckles 511. With the setting of the high-strength connecting rope 512, during normal operation, the load of the elevator is borne by other main load-bearing structures and detection devices. The connecting rope 512 does not participate in the regular load-bearing work. This can avoid fatigue and wear of the connecting rope 512 due to long-term stress during normal operation, thereby extending the service life of the connecting rope 512. It also reduces the risk of safety accidents caused by accidental breakage of the connecting rope 512.
[0028] Furthermore, the convenient buckle 511 is connected to the high-strength detection line 514 and the detection steel ring 513 through their cooperation. The detection and analysis device 516 is provided on one side of the detection fixing plate 507. With the setting of the convenient buckle 511, if the high-strength detection line 514 is damaged during use, the staff can quickly replace the high-strength detection line 514 through the convenient buckle 511, which speeds up the replacement efficiency.
[0029] Working Principle: This elevator weighing overload protection device, through the setting of the overload protection mechanism, when the elevator car 1 begins to bear weight, due to gravity, the plane 506 will have a downward displacement tendency, causing the air spring 509 and buffer spring 508 connected to the detection fixed plate 507 to begin to compress, thereby driving the connecting ring 510 and the convenient buckle 511 connected to it to move. This movement causes the high-strength detection line 514 to be stretched or undergo slight deformation. According to the resistance strain effect of the material, its resistance value changes, generating an electrical signal corresponding to the load. This electrical signal is transmitted in real time to the detection and analysis device 516 through the signal transmission line 515. The detection and analysis device 516 quickly calculates the current load situation in the car 1 based on the pre-set correspondence between the resistance value and the load, and sends the remaining load information to the screen above the touch screen elevator control button 4 for display, allowing passengers to intuitively understand the remaining load capacity of the car 1. As the number of people or goods inside continues to increase, the load gradually approaches the elevator's rated overload limit. The tension or deformation of the high-strength detection line 514 also approaches its limit. The detection and analysis device 516 continuously monitors the resistance change of the high-strength detection line 514. When the resistance value approaches the preset overload critical resistance value, the detection and analysis device 516 immediately sends a warning signal to the elevator control system. Upon receiving the signal, the elevator control system activates the alarm system inside the elevator, reminding passengers that the car 1 is full and no further entry is allowed through voice or visual alarms. At the same time, the screen above the touch-screen elevator control button 4 displays a flashing red "Overload Warning" message to further warn passengers. If the load continues to increase and exceeds the limit that the high-strength detection line 514 can withstand, the detection line 514 will break. At this time, the originally slack high-strength connecting rope 512 begins to be stretched. Because the high-strength connecting rope 512 has sufficient strength, it can withstand the overload weight inside the car 1 and prevent the car 1 from breaking. In case of dangerous falls due to overload, ensuring personnel safety, the detection and analysis device 516 will immediately detect the sudden interruption of the signal the instant the detection line 514 breaks, determining it as an overload fault state, and quickly send this signal to the elevator control system. Upon receiving the signal, the elevator control system will immediately take emergency braking measures to stop the elevator's operation, while keeping the door 2 open to allow passengers to evacuate safely. The audible alarm light 3 will continuously emit a loud alarm and begin flashing to attract the attention of surrounding personnel and warn of the elevator's dangerous state. In addition, the elevator control system will automatically trigger a communication mechanism with maintenance personnel, such as sending fault information and detailed data such as the elevator's location to maintenance personnel through the internal communication system, notifying them to come for repairs as soon as possible.To ensure the elevator can return to normal operation after a fault is resolved and to guarantee the safety of subsequent passengers, traditional methods are susceptible to wear and tear on mechanical parts and environmental factors, leading to delayed or inaccurate detection. This design, however, utilizes the resistance changes of a high-strength 514-strength detection cable to accurately sense load changes, providing early warnings when overload is imminent. Overload can be detected and stopped instantly, and automatic repair reporting is also possible, greatly improving the timeliness and effectiveness of overload detection.
[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An elevator overload protection device, comprising a car (1), characterized in that: A sliding door (2) is slidably connected to one side surface of the car (1), an audible alarm light (3) is fixedly connected to the inner surface of the car (1), a touch screen elevator control button (4) is provided on the inner surface of the car (1), and an overload protection mechanism (5) is provided on the upper surface of the car (1). The overload protection mechanism (5) includes a lower foundation fixing plate (501), a lower foundation fixing ring (502), a rigid chain link (503), an upper foundation fixing ring (504), an upper foundation fixing plate (505), a driving plane (506), a detection fixing plate (507), a buffer spring (508), an air spring (509), a connecting ring (510), a convenient buckle (511), a high-strength connecting rope (512), a detection steel ring (513), a high-strength detection line (514), and a signal transmission line (515). The car (1) is equipped with a detection and analysis device (516). A lower foundation fixing plate (501) is fixedly connected to the upper surface of the car (1). A lower foundation fixing ring (502) is fixedly connected to the upper surface of the lower foundation fixing plate (501). A rigid link (503) is interlocked with the upper surface of the lower foundation fixing ring (502). An upper foundation fixing ring (504) is interlocked with the upper surface of the rigid link (503). An upper foundation fixing plate (505) is fixedly connected to the upper surface of the upper foundation fixing ring (504). A driving plane (506) is fixedly connected to the upper surface of the upper base fixing plate (505), and a detection fixing plate (507) is fixedly connected to the lower surface of the driving plane (506). A buffer spring (508) is fixedly connected to one side surface of the detection fixing plate (507), and an air spring (509) is fixedly connected to one side surface of the detection fixing plate (507). A connecting ring (510) is fixedly connected to one side surface of the air spring (509), and a connecting ring (510) is fixedly connected to one side surface of the connecting ring (510). A convenient buckle (511) is fixedly connected to one side of the convenient buckle (511), a high-strength connecting rope (512) is fastened to one side of the convenient buckle (511), a detection steel ring (513) is fastened to one side of the detection steel ring (513), a high-strength detection line (514) is fixedly connected to one side of the high-strength detection line (514), a signal transmission line (515) is fixedly connected to one side of the signal transmission line (515), and a detection and analysis device (516) is fixedly connected to one side of the signal transmission line (515).
2. The elevator weighing overload protection device according to claim 1, characterized in that: Two sets of the switch doors (2) are symmetrically slidably arranged on one side of the car (1), and the audible alarm lights (3) are arranged on the inner upper surface opposite the switch doors (2) in the car (1).
3. The elevator weighing overload protection device according to claim 1, characterized in that: The lower foundation fixing ring (502) and the lower foundation fixing plate (501) are fixedly connected to the upper surface of the car (1) by six sets of bolts, and the upper foundation fixing plate (505) and the upper foundation fixing ring (504) are fixedly connected to one side surface of the driving plane (506) by six sets of bolts.
4. The elevator weighing overload protection device according to claim 1, characterized in that: The rigid link (503) is provided in multiple sets between the lower foundation fixing ring (502) and the upper foundation fixing ring (504), and they are interlocked with each other. The detection fixing plate (507) is provided in one set at each of the four corners of the upper surface of the car (1).
5. An elevator weighing overload protection device according to claim 1, characterized in that: The driving plane (506) is provided with a set of detection fixing plates (507) at each of the four corners of the car (1). The connecting ring (510) forms a telescopic structure with the detection fixing plates (507) through the setting of buffer spring (508) and air spring (509).
6. The elevator weighing overload protection device according to claim 1, characterized in that: The high-strength connecting rope (512) is in a slack state under normal circumstances, and the detection steel ring (513) is set above each set of convenient buckles (511).
7. The elevator weighing overload protection device according to claim 1, characterized in that: The convenient buckle (511) is connected to each other by the cooperation of the high-strength detection line (514) and the detection steel ring (513). The detection and analysis device (516) is provided on one side of the detection fixing plate (507).