Elevator safety control device
By installing a buffer adjustment mechanism with stabilizing and buffering components inside the elevator car, and using a stepper motor and position distance sensor to control the extension and retraction of the inner and outer car, the problem of misalignment between the car door and the floor door after emergency braking of the elevator is solved, thus achieving a safe and stable escape route and normal operation.
Patent Information
- Application Number
- CN202520429010.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-12
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-03-12
AI Technical Summary
When an elevator malfunctions and triggers emergency braking, the car stops at a certain position in the shaft, causing the car door and the floor door to become misaligned. Trapped people are unable to escape because the escape route is blocked. Existing adjustment methods pose risks of secondary falls, insufficient mechanical stability, and limited escape space.
The system employs a buffer adjustment mechanism that includes stabilizing and cushioning components. A stepper motor drives a spiral column to achieve smooth extension and retraction of the inner and outer compartments. Combined with position and distance sensors and a permanent magnet motor for control, it ensures precise adjustment and locking of the inner and outer compartments, preventing secondary falls and providing a safe escape route.
In an emergency, the car position can be safely adjusted to avoid the risk of a secondary fall, ensuring that trapped personnel can escape quickly and safely, and saving energy during normal operation.
Smart Images
Figure CN223950536U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to elevator technical field, concretely is elevator safety control device. BACKGROUND
[0002] As a vertical transport tool, the safety of elevator depends on the double braking mechanism of electromagnetic brake and safety gear. However, when the elevator triggers emergency braking due to sudden failure (such as power failure, steel wire rope fracture), the car may be suspended at a certain position in the shaft, causing the car door and the floor door (outer door) to be misaligned, and the trapped personnel cannot escape due to the blocked escape route.
[0003] The traditional rescue method usually adjusts the height of the elevator car to align with the outer door, but this process has the following risks:
[0004] 1. Secondary falling risk: if the braking system fails or external force is improperly intervened during the adjustment process, the car may lose control and fall, causing secondary injury.
[0005] 2. Insufficient mechanical stability: most existing cars are single rigid structures, lacking buffer adjustment capability in emergency situations, and forcibly moving the car may cause structural deformation or brake loosening.
[0006] 3. Limited escape space: when the car and the outer door are misaligned, only manual or external rescue equipment can forcibly enlarge the opening, which is low in efficiency and poor in safety.
[0007] Therefore, there is an urgent need for an elevator safety control device that can safely adjust the car position after emergency braking while avoiding the risk of secondary falling. INVENTION CONTENTS
[0008] The utility model aims at providing elevator safety control device, to solve the problem that when elevator triggers emergency braking due to sudden failure, the car is suspended at a certain position in the shaft, causing the car door and the floor door to be misaligned, and the trapped personnel cannot escape due to the blocked escape route.
[0009] To solve the above technical problems, the utility model provides the following technical scheme:
[0010] The elevator safety control device comprises a car, the car comprises an outer car and an inner car, the inner car is sleeved in the outer car, the outer car is connected with a traction system, the inner car is used for passenger or goods, a buffer adjusting mechanism is arranged between the inner car and the outer car, the buffer adjusting mechanism controls the extension and retraction of the inner car from the outer car, the front of the outer car is provided with a car door, the bottom of the outer car is provided with a guide opening, the buffer adjusting mechanism controls the extension and retraction of the inner car from the outer car, the outer car is provided with an electromagnetic brake and a safety gear matched with an elevator shaft, the electromagnetic brake and the safety gear are matched to be used for double emergency braking of the outer car, and the end of the inner car away from the guide opening is fixedly connected with a limiting top plate for preventing the inner car from separating from the outer car.
[0011] Preferably, the buffer adjusting mechanism comprises a stabilizing assembly and a buffer assembly, the stabilizing assembly is arranged between the inner car and the outer car, and the buffer assembly is arranged on the top of the outer car.
[0012] Preferably, the stabilizing assembly comprises a screw column and a stepping motor for driving the screw column to rotate, the stepping motor is fixedly connected to the top end of the outer car, one end of the screw column close to the stepping motor is fixedly connected to a supporting ring, the screw column passes through the top end of the outer car and enters the inner car, the supporting ring is rotationally connected to the top of the outer car, a threaded groove is formed in the position of the limiting top plate close to the screw column, and the screw column is rotationally matched with the threaded groove of the limiting top plate.
[0013] Preferably, the buffer assembly comprises a winch, a steel wire rope is arranged on the winch, and one end of the steel wire rope is fixedly connected with the limiting top plate through the top of the outer car.
[0014] Preferably, a reinforcing support is arranged on the top of the outer car, the winch is arranged on the reinforcing support, and the stepping motor is arranged on one side of the winch.
[0015] Preferably, the winch comprises a first winding shaft and a second winding shaft, the first winding shaft and the second winding shaft are arranged at two ends of the reinforcing support respectively, a double-shaft speed reducer is arranged between the first winding shaft and the second winding shaft, the double-shaft speed reducer drives the first winding shaft and the second winding shaft to rotate synchronously, the double-shaft speed reducer is fixedly connected with the reinforcing support, and a driving device is fixedly connected to the reinforcing support.
[0016] Preferably, the driving device is a permanent magnet motor, a rotating speed sensor is arranged on the permanent magnet motor, and the rotating speed sensor monitors the rotating speed and rotating number of a driving shaft of the permanent magnet motor.
[0017] Preferably, the inner car is provided with an exit, the exit of the inner car is located on the same side of the car door of the outer car and has the same shape and specification.
[0018] Preferably, a position distance sensor is arranged on the inner wall of the top end of the outer compartment, and the position distance sensor is used to monitor the distance between the inner wall of the top end of the outer compartment and the limiting top plate, and when the distance between the inner wall of the top end of the outer compartment and the limiting top plate is equal to the length of the screw column, the stepping motor drives the screw column to rotate.
[0019] Preferably, two sliding grooves are arranged on the two sides of the inner compartment of the outer compartment, and the two ends of the limiting top plate are slidingly connected to the inner sides of the sliding grooves, and the two ends of the sliding grooves limit the moving position of the limiting top plate.
[0020] Compared with the prior art, the utility model has the beneficial effects that:
[0021] The elevator safety control device can safely adjust the position of the car after emergency braking, avoiding the risk of secondary falling, and the working principle is that the stable assembly and the buffer assembly realize the precise control of the inner compartment and the outer compartment. When the elevator occurs emergency braking and causes the car to be misaligned with the floor door, the stepping motor drives the screw column to rotate reversely, so that the inner compartment and the outer compartment are telescopic, and the inner compartment is slowly adjusted to the aligned position with the elevator port through the assistance of the buffer assembly, so that the trapped personnel can escape. At the same time, the position distance sensor monitors the distance between the inner wall of the top end of the outer compartment and the limiting top plate, and when the distance is equal to the length of the screw column, the stepping motor is started to drive the screw column to rotate forward, so that the inner compartment and the outer compartment are locked, the normal operation of the elevator is ensured, and the working is automatically stopped when the time is exceeded or the distance is re-generated, so that the energy consumption is saved. The internal structure and the functions of the required components are optimized, so that the trapped personnel can be timely responded and safely rescued in any emergency. BRIEF DESCRIPTION OF DRAWINGS
[0022] Figure 1 It is a whole front structure schematic view of the utility model;
[0023] Figure 2 It is a structure schematic view of the inner compartment extending out of the outer compartment of the utility model;
[0024] Figure 3 It is a structure schematic view of the buffer assembly of the utility model;
[0025] Figure 4 It is a structure schematic view of the inner compartment extending out of the outer compartment of the utility model;
[0026] Figure 5 It is a structure schematic view of the screw column of the utility model.
[0027] The components include: 1. Outer compartment; 2. Inner compartment; 3. Exit; 4. Door; 5. Spiral column; 6. Stepper motor; 7. Support ring; 8. Limiting top plate; 9. Slide groove; 10. Threaded groove; 11. Position distance sensor; 12. Winch; 13. Wire rope; 14. Reinforcing bracket; 15. First winding shaft; 16. Second winding shaft; 17. Dual-shaft reduction gearbox. Detailed Implementation
[0028] 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.
[0029] Example 1:
[0030] Please see Figures 1-5 The present invention provides the following technical solution:
[0031] The elevator safety control device includes a car, which is the main load-bearing part of the elevator and consists of an outer car 1 and an inner car 2. The outer car 1 is connected to the traction system and bears the weight of the elevator and external forces. The inner car 2 is used for passengers or goods and is connected to the outer car 1 through a buffer adjustment mechanism. The inner car 2 is provided with an exit 3, which is located on the same side as the car door 4 of the outer car 1 and has the same shape and specifications, facilitating the entry and exit of passengers or goods.
[0032] The outer car 1 is equipped with an electromagnetic brake and a safety clamp that work in conjunction with the elevator shaft. The electromagnetic brake and the safety clamp work together for the dual emergency braking of the outer car 1.
[0033] Furthermore, a limiting top plate 8 is fixedly connected to the end of the inner compartment 2 away from the guide opening to prevent the inner compartment 2 from detaching from the outer compartment 1. Slide grooves 9 are provided on both sides of the interior of the outer compartment 1. The two ends of the limiting top plate 8 are slidably connected to the inside of the slide grooves 9. The two ends of the slide grooves 9 limit the movement position of the limiting top plate 8 to ensure the correct positional relationship between the inner compartment 2 and the outer compartment 1 and prevent the inner compartment 2 from detaching from the interior of the outer compartment 1.
[0034] The buffer adjustment mechanism ensures smooth expansion and contraction between the inner compartment 2 and the outer compartment 1. The buffer adjustment mechanism includes a stabilizing component and a buffering component. The stabilizing component is installed between the inner compartment 2 and the outer compartment 1 and includes a spiral column 5 and a stepper motor 6.
[0035] The helical column 5 is rotationally connected between the top of the outer compartment 1, the stepping motor 6 is fixedly connected to the top end of the outer compartment 1, the helical column 5 passes through the top end of the outer compartment 1 into the inner compartment 1, the end of the helical column 5 close to the stepping motor 6 is fixedly connected to the support ring 7, the support ring 7 is rotationally connected to the top of the outer compartment 1, the support ring 7 rotationally supports the helical column 5, the limiting top plate 8 is provided with a threaded groove 10 close to the position of the helical column 5, the helical column 5 is rotationally connected with the threaded groove 10 of the limiting top plate 8, when the threaded groove 10 of the limiting top plate 8 is close to the helical column 5, the stepping motor 6 drives the helical column 5 to rotate forward, so that the helical column 5 is rotationally connected with the threaded groove 10, thereby locking and fixing the inner compartment 2 and the outer compartment 1.
[0036] When an emergency occurs, and the space is too narrow for the personnel to pass due to the misalignment of the elevator suspension, the stepping motor 6 drives the helical column 5 to rotate reversely, so that the inner compartment 2 and the outer compartment 1 are telescopic, the inner compartment 2 is slowly telescopic in the outer compartment 1 through the buffer assembly, the opening of the inner compartment 2 is coincided with the elevator port, which is helpful for the trapped personnel to escape quickly.
[0037] The position distance sensor 11 is installed on the inner wall of the top end of the outer compartment 1, and is used for monitoring the distance between the inner wall of the top end of the outer compartment 1 and the limiting top plate 8.
[0038] When the distance is equal to the length of the helical column 5, the stepping motor 6 is started to drive the helical column 5 to rotate forward, so that the helical column 5 is connected with the threaded groove 10, the inner compartment 2 of the elevator is reset and locked, and the normal and stable operation of the elevator is ensured, when the distance is greater than the length of the helical column 5, the stepping motor 6 stops rotating, and the energy consumption is saved; the rotation of the helical column 5 is driven by the stepping motor 6, so that the inner compartment 2 and the outer compartment 1 are separated or combined and locked.
[0039] Further, the buffer assembly is installed on the top of the outer compartment 1, and includes a winch 12 and a steel wire rope 13, the winch 12 is connected with the limiting top plate 8 through the steel wire rope 13, and is used for assisting the telescopic of the inner compartment 2.
[0040] The reinforcing support 14 is installed on the top of the outer compartment 1, and the winch 12 is installed on the reinforcing support 14, the reinforcing support 14 fixedly supports the winch 12 and the stepping motor 6;
[0041] The winch 12 includes a first winding shaft 15 and a second winding shaft 16, the first winding shaft 15 and the second winding shaft 16 are respectively installed on the two ends of the reinforcing support 14, a double-shaft reduction box 17 is installed between the first winding shaft 15 and the second winding shaft 16, the double-shaft reduction box 17 drives the first winding shaft 15 and the second winding shaft 16 to synchronously rotate, the double-shaft reduction box 17 is fixedly connected with the reinforcing support 14, and the reinforcing support 14 is fixedly connected with a driving device.
[0042] The driving device is a permanent magnet motor, a rotating speed sensor is installed on the permanent magnet motor, the rotating speed sensor monitors the rotating speed and rotating number of the driving shaft of the permanent magnet motor; the rotating speed of the permanent magnet motor is adjusted through the control module, so that the steel wire rope 13 of the first winding shaft 15 and the second winding shaft 16 is slowly wound and unwound, the slow contraction of the inner compartment 2 in the outer compartment 1 is ensured, the safety and stability of the equipment are further ensured, the electromagnetic brake and the safety clamp brake state are kept stable, and the safety is improved.
[0043] The permanent magnet motor drives the double-shaft reduction box 17 to rotate, the two output shafts of the double-shaft reduction box 17 ensure that the winding shafts rotate synchronously, the steel wire ropes 13 of the first winding shaft 15 and the second winding shaft 16 are synchronously wound and unwound, the two steel wire ropes 13 pull the inner compartment 2 from both sides, the inner compartment 2 is uniformly stressed, and the inner compartment 2 stably slides in the outer compartment 1, and the stability is good.
[0044] Although the specific embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these specific embodiments without departing from the principles and spirits, the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. Elevator safety control device comprising a car, characterized in that: The car includes an outer car (1) and an inner car (2), the inner car (2) is slidingly sleeved in the outer car (1), the outer car (1) is connected with a traction system, the inner car (2) is used for passenger or goods riding, a buffer adjusting mechanism is installed between the inner car (2) and the outer car (1) to make the inner car (2) and the outer car (1) smoothly extend and retract, a car door (4) is arranged on the front of the outer car (1), a guide opening is arranged on the bottom of the outer car (1), the buffer adjusting mechanism controls the inner car (2) to extend and retract from the guide opening of the outer car (1), an electromagnetic brake and a safety clamp cooperating with the elevator shaft are installed on the outer car (1), the electromagnetic brake and the safety clamp are used for double emergency braking of the outer car (1), and a limiting top plate (8) is fixedly connected to the end of the inner car (2) away from the guide opening to prevent the inner car (2) from separating from the outer car (1).
2. An elevator safety control device according to claim 1, characterized in that The buffer adjusting mechanism includes a stabilizing assembly and a buffer assembly, the stabilizing assembly is installed between the inner car (2) and the outer car (1), and the buffer assembly is installed on the top of the outer car (1).
3. An elevator safety control device according to claim 2, characterised in that: The stabilizing assembly includes a screw column (5) and a stepping motor (6) driving the screw column (5) to rotate, the stepping motor (6) is fixedly connected to the top end of the outer car (1), one end of the screw column (5) close to the stepping motor (6) is fixedly connected to a supporting ring (7), the screw column (5) passes through the top end of the outer car (1) and enters the inside of the outer car (1), the supporting ring (7) is rotationally connected to the top of the outer car (1), a threaded groove (10) is formed in the position of the limiting top plate (8) close to the screw column (5), and the screw column (5) is rotationally matched with the threaded groove (10) of the limiting top plate (8).
4. An elevator safety control device according to claim 2, characterized in that: The buffer assembly includes a winch (12), a steel wire rope (13) is installed on the winch (12), and one end of the steel wire rope (13) passes through the top of the outer car and is fixedly connected with the limiting top plate (8).
5. An elevator safety control device according to claim 4, characterized in that: A reinforcing support (14) is installed on the top of the outer car, the winch (12) is installed on the reinforcing support (14), and the stepping motor (6) is installed on one side of the winch (12).
6. An elevator safety control device according to claim 5, characterized in that: The winch (12) includes first and second winding shafts (15) and (16), the first and second winding shafts (15) and (16) are respectively installed at two ends of the reinforcing support (14), a double-shaft speed reducer (17) is installed between the first and second winding shafts (15) and (16), the double-shaft speed reducer (17) drives the first and second winding shafts (15) and (16) to synchronously rotate, the double-shaft speed reducer (17) is fixedly connected with the reinforcing support (14), and a driving device is fixedly connected to the reinforcing support (14).
7. An elevator safety control device according to claim 6, characterized in that The driving device is a permanent magnet motor, a rotating speed sensor is installed on the permanent magnet motor, and the rotating speed sensor monitors the rotating speed and rotating number of a driving shaft of the permanent magnet motor.
8. The elevator safety control device of claim 1, wherein: The inner car (2) is provided with an exit (3), the exit (3) of the inner car (2) is located on the same side of the car door (4) of the outer car (1) and has the same shape and specification.
9. An elevator safety control device according to claim 8, characterised in that: The position distance sensor (11) is arranged on the inner wall of the top end of the outer compartment (1), and is used to monitor the distance between the inner wall of the top end of the outer compartment (1) and the limiting top plate (8). When the distance between the inner wall of the top end and the limiting top plate (8) is equal to the length of the spiral column (5), the step motor (6) is started to drive the spiral column (5) to rotate.
10. An elevator safety control device according to claim 9, characterized in that: The inner sides of the outer compartment (1) are provided with sliding grooves (9), and the two ends of the limiting top plate (8) are slidingly connected to the inner sides of the sliding grooves (9). The sliding grooves (9) limit the movement position of the limiting top plate (8).