High-altitude slow descent device based on magnetic eddy current deceleration
By adopting magnetic eddy current deceleration technology in the high-altitude slow-down device, the permanent magnet and the reduction disk generate magnetic eddy current, adaptively controlling the descent speed, solving the problems of wear, poor stability and limited slow-down length in the prior art, and achieving efficient high-altitude slow-down effect without wear, long service life, and unlimited slow-down length.
Patent Information
- Application Number
- CN202510234011.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2025-04-11
AI Technical Summary
Existing high-altitude slow-down devices such as friction and hydraulics have defects such as wear problems, poor stability, and limited slow-down length, making it difficult to achieve infinite length slow-down and efficient adaptive control.
The high-altitude slow-down device based on magnetic eddy current deceleration is adopted to generate magnetic eddy current through the kinetic energy generated when a person or heavy object descends, and the permanent magnet and the reduction disc are used to generate magnetic eddy current, adaptively control the descent speed, achieving high-altitude slow-down with no wear, long service life, and unlimited slow-down length.
It achieves the advantages of slow drop of people or heavy objects at high altitudes, with no wear, long service life, and unlimited slow drop length. It is suitable for scenarios such as self-rescue of high-rise buildings, fire altitude operations and cableway rescue.
Smart Images
Figure CN119792838A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a slow descent device, in particular to a high altitude slow descent device based on magnetic eddy current deceleration. Background Art
[0002] With the acceleration of urbanization, more and more high-rise office buildings and residential buildings are appearing in front of people. However, when a fire or earthquake occurs in a high-rise building, the people in the building often do not have time to evacuate, resulting in heavy casualties. If some self-rescue equipment can be equipped in high-rise buildings, when an emergency occurs, people can choose more ways to escape the building safely, such as installing a descender on the window to facilitate people to escape from the high-rise building. In the cableway emergency rescue, passengers descend from the cabin to the ground, and such devices are also needed to complete the rescue.
[0003] The existing devices for high-altitude slow descent escape mainly include friction and hydraulic types. The friction type achieves slow descent through the friction between the friction plate and the brake disc. The friction plate is easy to wear, resulting in a shortened service life and the need for frequent replacement. The friction force is greatly affected by the environment, such as humidity and temperature, which may cause unstable slow descent speed. The length of the slow descent device is limited by the durability of the friction material, and it is impossible to achieve an infinitely long slow descent. In short, friction devices are prone to failure and have poor stability. Hydraulic devices generally use hydraulic damping to balance the gravity of a person's descent, but the volume of the internal hydraulic oil will change, resulting in empty travel or jamming, which reduces the stability of the device. Summary of the invention
[0004] In order to make up for the deficiencies of the prior art, the present invention provides a high-altitude slow-descent device based on magnetic eddy current deceleration.
[0005] The present invention is achieved through the following technical solutions: A high altitude slow descent device based on magnetic eddy current deceleration includes a rope pulley, and is characterized in that: the rope pulley is fixedly connected to a driving gear shaft, the driving gear shaft is fixedly connected to a driving gear, the driving gear is meshed with a driven gear, the driven gear is mounted on the driven gear shaft, the driven gear shaft is fixedly connected to a speed reduction plate, the driven gear shaft passes through an inner shell, and a plurality of permanent magnets are provided on the inner shell.
[0006] The inner shell is fixedly connected to the seat plate, and the seat plate is fixedly connected to the outer shell.
[0007] An inner protective cover sleeved on the driving gear is arranged between the seat plate and the outer shell.
[0008] An outer cover is arranged on the outer side of the speed reduction disc.
[0009] The permanent magnet is installed in the installation hole of the inner shell.
[0010] The beneficial effects of the present invention are: utilizing the kinetic energy generated when a person or a heavy object falls from a high altitude, generating a reverse braking torque through magnetic eddy currents, and the braking torque changes accordingly with the descending speed of the person or the heavy object, thereby realizing adaptive control of the speed of the descending person or object. The invention has the advantages of no wear, long service life, and unlimited slow descent length, and is suitable for cableway emergency rescue, high-altitude escape and other fields. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] The present invention will be further described below in conjunction with the accompanying drawings.
[0012] Attached Figure 1 It is a schematic diagram of the structure explosion of the present invention; Attached Figure 2 It is a schematic diagram of the overall structure of the present invention; In the figure, 1 is a rope pulley, 2 is a driving gear shaft, 3 is a driving gear, 4 is a driven gear, 5 is a driven gear shaft, 6 is a reduction plate, 7 is an inner housing, 8 is a permanent magnet, 9 is a seat plate, 10 is an outer housing, 11 is an inner protective cover, 12 is an outer cover, and 13 is a mounting hole. DETAILED DESCRIPTION
[0013] The accompanying drawings are a specific embodiment of the present invention. This embodiment includes a rope pulley 1, which is fixedly connected to the driving gear shaft 2, which is fixedly connected to the driving gear 3, which is meshed with the driven gear 4, which is mounted on the driven gear shaft 5, which is a whole with the driven gear shaft 5, which is fixedly connected to the reduction plate 6, which passes through the inner shell 7, and a plurality of permanent magnets 8 are provided on the inner shell 7. The inner shell 7 is fixedly connected to the seat plate 9, which is fixedly connected to the outer shell 10. An inner protective cover 11 is provided between the seat plate 9 and the outer shell 10 and is sleeved on the driving gear 3. An outer cover 12 is provided on the outer side of the reduction plate 6. The permanent magnet 8 is installed in the mounting hole 13 of the inner shell 7.
[0014] The high altitude slow descent device based on magnetic eddy current deceleration of the present invention is adopted. When a person or a heavy object descends, the rope drives the rope wheel 1 to rotate, the rope wheel 1 drives the driving gear shaft 2 and the driving gear 3 to rotate, the driving gear 3 drives the driven gear 4 and the driven gear shaft 5 to rotate, and then drives the speed reduction plate 6 to rotate. The speed reduction plate 6 rotates on the magnetic field of the permanent magnet 8, and the magnetic eddy current is generated by the alternation of the NS magnetic poles. The eddy current interacts with the magnetic field to generate resistance. The direction of the eddy current resistance is opposite to the rotation direction of the speed reduction plate 6, and the magnetic eddy current resistance is generated. According to the descending speed of the person or the heavy object, an adaptive braking torque is provided to keep the person or the heavy object descending at a uniform speed, so as to realize the high altitude slow descent of the person or the heavy object. Since the magnetic resistance of this device is basically non-contact, there is no wear problem, and the service life is significantly extended; the length of the slow descent device is not limited, and it can be designed as an infinitely long slow descent according to needs; it is suitable for self-rescue of personnel in high-rise buildings, high-altitude operations for fire fighting, cableway rescue, etc., and can improve the efficiency of self-rescue and rescue by others.
Claims
1. A high altitude slow descent device based on magnetic eddy current deceleration, comprising a rope pulley (1), characterized in that: The rope wheel (1) is fixedly connected to the driving gear shaft (2), the driving gear shaft (2) is fixedly connected to the driving gear (3), the driving gear (3) is meshed with the driven gear (4), the driven gear (4) is mounted on the driven gear shaft (5), the driven gear shaft (5) is fixedly connected to the reduction plate (6), the driven gear shaft (5) passes through the inner shell (7), and a plurality of permanent magnets (8) are provided on the inner shell (7).
2. The high altitude slow descent device based on magnetic eddy current deceleration according to claim 1 is characterized in that: The inner shell (7) is fixedly connected to the seat plate (9), and the seat plate (9) is fixedly connected to the outer shell (10).
3. The high altitude slow descent device based on magnetic eddy current deceleration according to claim 2 is characterized in that: An inner protective cover (11) sleeved on the driving gear (3) is provided between the seat plate (9) and the outer shell (10).
4. The high altitude slow descent device based on magnetic eddy current deceleration according to claim 1 is characterized in that: An outer cover (12) is provided on the outer side of the speed reduction disc (6).
5. The high altitude slow descent device based on magnetic eddy current deceleration according to claim 1 is characterized in that: The permanent magnet (8) is installed in the installation hole (13) of the inner shell (7).