Elevator unbalanced load detection and voice correction device thereof
By using weight sensors and voice prompt systems combined with a correction mechanism in elevators, the problem of elevator off-center load detection has been solved, enabling real-time detection and precise correction of off-center loads, thus improving the safety and comfort of elevators.
Patent Information
- Application Number
- CN202522214427.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-20
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-10-20
AI Technical Summary
Existing elevators cannot effectively detect off-center loading, which can damage the guide rails and car under off-center loading, increasing passenger injury and rescue difficulty.
The system combines a weight sensor and a voice prompt system with a correction mechanism. The weight sensor detects the weight distribution of the support plate, the controller analyzes the data and prompts passengers to adjust their positions through a speaker, and the system uses a motor to drive the slide rail and counterweight for automatic correction.
It enables real-time detection and precise correction of elevator eccentricity, reducing damage to guide rails and car, and improving passenger safety and rescue efficiency.
Smart Images

Figure CN224677564U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of elevator off-center load detection technology, and in particular to an elevator off-center load detection device and its voice correction device. Background Technology
[0002] Elevators, as an indispensable vertical transportation tool in modern buildings, are widely used in high-rise buildings, residential communities, shopping malls, and many other fields. With the development of elevator technology, the safety and comfort of elevators have become the focus of public attention. Elevator safety systems, including speed governors, safety clamps, and overload protection devices, can play a crucial role in emergencies and prevent serious safety accidents from occurring. When an elevator is running at overspeed, the speed governor will automatically activate, triggering the braking device to stop the elevator quickly. In the event of an elevator malfunction or other emergency, the safety clamp can quickly clamp the guide rails and prevent the elevator car from sliding down, thereby avoiding greater danger.
[0003] However, most existing elevators cannot detect uneven loading. If an elevator is unevenly loaded and triggers the safety brake, it will cause greater damage to the guide rails and the car than when the car is balanced. This can result in derailment, car deformation, guide rail deformation, etc., causing greater harm to passengers in the car and directly increasing the difficulty of subsequent rescue work. Utility Model Content
[0004] The purpose of this invention is to provide an elevator off-center load detection and voice correction device to solve the problems existing in the background technology.
[0005] The objective of this utility model is achieved through the following technical solution: An elevator off-center load detection and voice correction device includes a car and a base plate. The base plate is installed at the bottom of the car, and a detection mechanism is installed inside the car for off-center load detection. The detection mechanism includes: The support plate is installed inside the car cavity; A weight sensor is installed between the base plate and the support plate to detect the weight distribution on the surface of the support plate. A loudspeaker, installed inside the car, is used to issue voice prompts.
[0006] Preferably, the number of weight sensors is four, and the weight sensors are installed at the four corners of the support plate.
[0007] Preferably, a controller is installed in the car cavity, and the controller is electrically connected to the weight sensor and the speaker respectively.
[0008] Preferably, the surface of the support plate is affixed with numerical markings for dividing the support plate into sections.
[0009] Preferably, a top plate is installed on the surface of the car, and a correction mechanism is installed on the surface of the top plate for actively correcting the off-center load. The correction mechanism includes a first slide rail and a second slide rail. The first slide rails are symmetrically fixedly installed on the surface of the top plate, and a first slider is slidably installed in the inner cavity of each of the two first slide rails. The second slide rail is fixedly installed between the two first sliders.
[0010] Preferably, a first lead screw is rotatably mounted in the inner cavity of the first slide rail, a first threaded block is fixedly mounted on the surface of the first slider, the first lead screw is threadedly connected to the first threaded block, a first motor is fixedly mounted on the side wall of the first slide rail, and the output end of the first motor is fixedly connected to the first lead screw.
[0011] Preferably, a second slider is slidably mounted in the inner cavity of the second slide rail, and a counterweight is fixedly mounted on the surface of the second slider.
[0012] Preferably, a second lead screw is rotatably mounted in the inner cavity of the second slide rail, a second threaded block is fixedly mounted on the surface of the second slider, the second lead screw is threadedly connected to the second threaded block, a second motor is fixedly mounted at one end of the second slide rail, and the output end of the second motor is fixedly connected to the second lead screw.
[0013] The beneficial effects of this utility model are: 1) By setting up a detection mechanism and dividing the load-bearing plate into zones using digital labels, when people ride the elevator, four weight sensors can detect the weight distribution on the surface of the load-bearing plate and transmit the weight data to the controller. The controller analyzes the data and sets a weight error. When the difference between the weight sensors is greater than the weight error, it indicates that there is an off-center load. A sound is emitted through a speaker to prompt people to move to the area where the weight sensor with the smaller weight value is located, thereby adjusting the off-center load.
[0014] 2) By setting up a correction mechanism, the first motor can drive the first lead screw to rotate, thereby driving the first slider to move the second slide rail along the X-axis direction for lateral position adjustment. The second motor can drive the second lead screw to rotate, thereby driving the second slider to move the counterweight along the Y-axis direction for longitudinal position adjustment. The counterweight is moved towards the area where the weight sensor with the smaller weight value is located for secondary correction, thereby improving the correction accuracy. Attached Figure Description
[0015] Figure 1 A frontal perspective view provided for an embodiment of this utility model; Figure 2 A side sectional view provided for an embodiment of this utility model; Figure 3 A cross-sectional view of the bearing plate provided for an embodiment of this utility model; Figure 4 A cross-sectional view of the second slide rail provided for an embodiment of this utility model.
[0016] In the diagram, 1. Car; 2. Floor plate; 3. Top plate; 4. Detection mechanism; 401. Bearing plate; 402. Weight sensor; 403. Controller; 404. Speaker; 405. Digital identifier; 5. Correction mechanism; 501. First slide rail; 502. First slider; 503. First lead screw; 504. First threaded block; 505. First motor; 506. Second slide rail; 507. Second slider; 508. Second lead screw; 509. Second threaded block; 510. Second motor; 511. Counterweight. Detailed Implementation
[0017] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0018] See Figures 1-4 This utility model provides a technical solution: like Figures 1-4 As shown, an elevator off-center load detection and voice correction device includes a car 1 and a base plate 2. The base plate 2 is installed at the bottom of the car 1, and a top plate 3 is installed on the surface of the car 1. A detection mechanism 4 is installed in the inner cavity of the car 1 for off-center load detection. The detection mechanism 4 includes a support plate 401, a weight sensor 402, and a speaker 404. The support plate 401 is installed in the inner cavity of the car 1, and the weight sensor 402 is installed between the base plate 2 and the support plate 401 for detecting the weight distribution on the surface of the support plate 401. There are four weight sensors 402, which are installed at the four corners of the support plate 401.
[0019] like Figures 1-4 As shown, a speaker 404 is installed in the inner cavity of the car 1 to issue voice prompts. A controller 403 is installed in the inner cavity of the car 1. The controller 403 is electrically connected to the weight sensor 402 and the speaker 404 respectively. A digital label 405 is affixed to the surface of the support plate 401 to divide the support plate 401 into sections.
[0020] With the above technical solution, during use, the support plate 401 is divided into sections by digital identifiers 405. When people ride the elevator, the weight distribution on the surface of the support plate 401 can be detected by four weight sensors 402, and the weight data is transmitted to the controller 403. The controller 403 analyzes the data and sets a weight error. When the difference between the weight sensors 402 is greater than the weight error, it indicates that there is an off-center load. The speaker 404 emits a sound to prompt people to move to the area where the weight sensor 402 with the smaller weight value is located, thereby adjusting the off-center load.
[0021] like Figures 1-4 As shown, a correction mechanism 5 is further installed on the surface of the top plate 3 for actively correcting the off-center load. The correction mechanism 5 includes a first slide rail 501 and a second slide rail 506. The first slide rails 501 are symmetrically fixedly installed on the surface of the top plate 3. A first slider 502 is slidably installed in the inner cavity of each of the two first slide rails 501. The second slide rail 506 is fixedly installed between the two first sliders 502. A first lead screw 503 is rotatably installed in the inner cavity of the first slide rail 501. A first threaded block 504 is fixedly installed on the surface of the first slider 502. The first lead screw 503 is threadedly connected to the first threaded block 504. A first motor 505 is fixedly installed on the side wall of the first slide rail 501. The output end of the first motor 505 is fixedly connected to the first lead screw 503. The first motor 505 can drive the first lead screw 503 to rotate, thereby driving the first slider 502 to move the second slide rail 506 along the X-axis direction for lateral position adjustment.
[0022] like Figures 1-4 As shown, further, a second slider 507 is slidably installed in the inner cavity of the second slide rail 506, a counterweight 511 is fixedly installed on the surface of the second slider 507, a second lead screw 508 is rotatably installed in the inner cavity of the second slide rail 506, a second threaded block 509 is fixedly installed on the surface of the second slider 507, the second lead screw 508 is threadedly connected to the second threaded block 509, a second motor 510 is fixedly installed at one end of the second slide rail 506, the output end of the second motor 510 is fixedly connected to the second lead screw 508, the second motor 510 can drive the second lead screw 508 to rotate, thereby driving the second slider 507 to move the counterweight 511 along the Y-axis direction for longitudinal position adjustment.
[0023] With the above technical solution, after prompting the personnel to move to the correct position for correction, there may still be a weight deviation in the car 1. At this time, the first motor 505 can drive the first lead screw 503 to rotate, thereby driving the first slider 502 to move the second slide rail 506 along the X-axis direction for lateral position adjustment. The second motor 510 can drive the second lead screw 508 to rotate, thereby driving the second slider 507 to move the counterweight 511 along the Y-axis direction for longitudinal position adjustment. The counterweight 511 is moved towards the area where the weight sensor 402 with a smaller weight value is located for secondary correction, thereby improving the correction accuracy.
[0024] Preferably, during use, the support plate 401 is divided into sections by digital identifiers 405. When people ride the elevator, the weight distribution on the surface of the support plate 401 can be detected by four weight sensors 402, and the weight data is transmitted to the controller 403. The controller 403 analyzes the data and sets a weight error. When the difference between the weight sensors 402 is greater than the weight error, it indicates that there is an off-center load. The speaker 404 emits a sound to prompt people to move to the area where the weight sensor 402 with the smaller weight value is located, thereby adjusting the off-center load.
[0025] Preferably, after the personnel are prompted to move to the correct position, there may still be a weight deviation in the car 1. At this time, the first motor 505 can drive the first lead screw 503 to rotate, thereby driving the first slider 502 to move the second slide rail 506 along the X-axis direction for lateral position adjustment. The second motor 510 can drive the second lead screw 508 to rotate, thereby driving the second slider 507 to move the counterweight 511 along the Y-axis direction for longitudinal position adjustment. The counterweight 511 is moved towards the area where the weight sensor 402 with a smaller weight value is located for secondary correction, thereby improving the correction accuracy.
[0026] The above are merely preferred embodiments of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or the technology or knowledge in related fields. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.
Claims
1. An elevator off-center load detection and voice correction device, comprising a car (1) and a base plate (2), wherein the base plate (2) is installed at the bottom of the car (1), characterized in that, The inner cavity of the car (1) is equipped with a detection mechanism (4) for off-center load detection. The detection mechanism (4) includes: A support plate (401) is installed in the inner cavity of the car (1); A weight sensor (402) is installed between the base plate (2) and the support plate (401) to detect the weight distribution on the surface of the support plate (401); A loudspeaker (404) is installed inside the car (1) for issuing voice prompts.
2. The elevator off-center load detection and voice correction device according to claim 1, characterized in that: The number of weight sensors (402) is four, and the weight sensors (402) are installed at the four corners of the support plate (401).
3. The elevator off-center load detection and voice correction device according to claim 1, characterized in that: The inner cavity of the car (1) is equipped with a controller (403), which is electrically connected to a weight sensor (402) and a speaker (404).
4. The elevator off-center load detection and voice correction device according to claim 1, characterized in that: The surface of the support plate (401) is affixed with digital labels (405) for dividing the support plate (401) into sections.
5. The elevator off-center load detection and voice correction device according to claim 1, characterized in that: The car (1) is equipped with a top plate (3), and the top plate (3) is equipped with a correction mechanism (5) for actively correcting the off-center load. The correction mechanism (5) includes a first slide rail (501) and a second slide rail (506). The first slide rail (501) is symmetrically fixedly installed on the surface of the top plate (3). The inner cavity of each of the two first slide rails (501) is slidably equipped with a first slider (502). The second slide rail (506) is fixedly installed between the two first sliders (502).
6. The elevator off-center load detection and voice correction device according to claim 5, characterized in that: The first slide rail (501) has a first lead screw (503) rotatably mounted inside its inner cavity. The first slider (502) has a first threaded block (504) fixedly mounted on its surface. The first lead screw (503) is threadedly connected to the first threaded block (504). The first slide rail (501) has a first motor (505) fixedly mounted on its side wall. The output end of the first motor (505) is fixedly connected to the first lead screw (503).
7. The elevator off-center load detection and voice correction device according to claim 6, characterized in that: The second slide rail (506) has a second slider (507) slidably installed in its inner cavity, and a counterweight (511) is fixedly installed on the surface of the second slider (507).
8. The elevator off-center load detection and voice correction device according to claim 7, characterized in that: The second slide rail (506) has a second lead screw (508) rotatably mounted inside its inner cavity. The second slider (507) has a second threaded block (509) fixedly mounted on its surface. The second lead screw (508) is threadedly connected to the second threaded block (509). The second slide rail (506) has a second motor (510) fixedly mounted at one end. The output end of the second motor (510) is fixedly connected to the second lead screw (508).