Mute household elevator
By combining honeycomb sound insulation layers and active noise reduction components in home elevators, the problem of insufficient noise control in traditional home elevators has been solved, achieving full-band noise suppression and dynamic adaptive noise reduction effects.
Patent Information
- Application Number
- CN202511190074.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-25
- Publication Date
- 2025-11-21
AI Technical Summary
Traditional home elevators have inadequate noise control, especially in dealing with high-frequency vibration and structurally transmitted noise, and lack adaptability to dynamic noise control.
The method combines passive noise reduction with active noise reduction. It uses a honeycomb sound insulation layer inside the guide rail and an active noise reduction component, including acoustic sensors, controllers and multi-layer piezoelectric ceramic sheet stacked diaphragms, to collect and cancel noise in real time.
It achieves full-frequency suppression of noise from low to high frequencies, dynamically adapts to noise changes during elevator operation, and significantly reduces elevator operating noise.
Smart Images
Figure CN120987160A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the technical field of elevators, and particularly relates to a mute household elevator. BACKGROUND
[0002] The household elevator refers to an elevator installed in a private residence and used only by a single family.
[0003] When the household elevator is running, noise is generated by the friction between the traction system, the car and the guide rail, which affects the living experience. The traditional elevator mainly reduces noise in a passive way by adding sound insulation pads, and the following problems exist.
[0004] 1. The sound insulation material can only absorb part of the noise, and the high-frequency vibration and structural transmission noise are not handled well.
[0005] 2. It is impossible to intervene in real time according to the sound source during the operation of the elevator, and the noise control lacks dynamic adaptability.
[0006] 3. The mechanical connection between the guide rail and the car easily leads to vibration transmission and aggravates the noise problem.
[0007] Therefore, a mute household elevator is provided to solve the above problems. SUMMARY
[0008] The technical problem to be solved by the application is the problem of insufficient noise control of the traditional household elevator. The passive noise reduction and active noise reduction are combined to achieve the problem of all-round suppression of the noise during the operation of the elevator.
[0009] In order to realize the above functions, the technical scheme adopted by the application is as follows: a mute household elevator, comprising an elevator shaft and a car body arranged in the elevator shaft, a traction system fixedly arranged on the inner wall of the elevator shaft, guide rails fixedly arranged on the opposite two side walls in the elevator shaft, and a noise reduction mechanism arranged in the guide rail, a connecting beam fixedly connected to the upper end of the car body, guide shoes arranged at the two ends of the connecting beam and matched with the guide rails, a guide wheel arranged at the lower end of the connecting beam and matched with the traction system, and an active noise reduction assembly fixedly arranged on the inner wall of the top end of the elevator shaft.
[0010] Further, the guide rail is hollow, the noise reduction mechanism comprises a honeycomb layer fixedly arranged in the guide rail, and each unit cell of the honeycomb layer is filled with sound insulation cotton.
[0011] Further, the guide rail is T-shaped and made of metal composite material.
[0012] Further, the active noise reduction assembly comprises a vibrating plate fixedly arranged at the center position of the inner wall of the top end of the elevator shaft, and a power supply and a controller arranged on the two sides of the vibrating plate respectively to supply power and control the vibration frequency of the vibrating plate.
[0013] Furthermore, an acoustic sensor is fixedly installed on the inner wall of the top of the elevator shaft, and wires are connected between the acoustic sensor and the controller, the vibrator and the controller, and the vibrator and the power supply.
[0014] Furthermore, the controller is model TMSCDSP.
[0015] Furthermore, the vibrator adopts a multi-layer piezoelectric ceramic sheet stacked structure.
[0016] The beneficial effects achieved by the present invention using the above structure are as follows:
[0017] 1. By combining a honeycomb sound insulation layer with an active diaphragm, noise across the entire frequency range from low to high frequencies is covered. The honeycomb sound insulation layer reduces noise through its internal structure, while the diaphragm reduces noise through the principle of resonance noise reduction.
[0018] 2. Acoustic sensors and DSP controllers enable real-time noise acquisition and control, adapting to noise changes under different operating conditions such as elevator start-up, acceleration, and braking. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of a silent home elevator proposed in this solution;
[0020] Figure 2 This is a schematic diagram of the internal structure of a silent home elevator proposed in this solution;
[0021] Figure 3 This is a partial structural diagram of a silent home elevator proposed in this solution. Figure 1 ;
[0022] Figure 4 This is an embodiment of the present invention. Figure 3 Enlarged view of section A;
[0023] Figure 5 This is a partial structural diagram of a silent home elevator proposed in this solution. Figure 2 ;
[0024] Figure 6 This is a schematic diagram of the active noise cancellation component in this embodiment;
[0025] Figure 7 This is a flowchart of the active noise cancellation component in this embodiment.
[0026] The components include: 1. Elevator shaft; 2. Car body; 3. Traction system; 4. Guide rail; 5. Connecting beam; 6. Guide shoe; 7. Honeycomb layer; 8. Vibrating plate; 9. Power supply; 10. Controller; 11. Acoustic sensor; 12. Wire.
[0027] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation
[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.
[0029] Example 1:
[0030] like Figures 1-7 As shown, in order to achieve the above functions, the technical solution adopted by the present invention is as follows: A silent home elevator includes an elevator shaft 1 and a car body 2 disposed inside the elevator shaft 1. A traction system 3 is fixedly disposed on the inner wall of the elevator shaft 1. Guide rails 4 are fixedly disposed on the opposite side walls inside the elevator shaft 1, and a noise reduction mechanism is provided inside the guide rails 4. A connecting beam 5 is fixedly connected to the upper end of the car body 2, and guide shoes 6 adapted to the guide rails 4 are provided at both ends of the connecting beam 5. A guide wheel adapted to the traction system 3 is provided at the lower end of the connecting beam 5. An active noise reduction component is fixedly disposed on the inner wall at the top of the elevator shaft 1.
[0031] like Figures 1-7 As shown, the guide rail 4 is hollow inside. The noise reduction mechanism includes a honeycomb layer 7 fixed inside the guide rail 4, and each cell of the honeycomb layer 7 is filled with sound insulation cotton. The guide rail 4 is T-shaped and made of metal composite material, which has a better sound absorption effect. When the elevator is running, the car body 2 slides in the guide rail 4 through the guide shoe 6. The honeycomb layer 7 inside the guide rail 4 absorbs the friction noise generated by the sliding of the car, which is mainly mid-to-high frequency. The sound insulation cotton further attenuates the vibration transmitted through the structure of the guide rail 4. The guide rail 4 is made of T-shaped metal composite material to reduce its own vibration and reduce the amount of structural noise generated.
[0032] Example 2:
[0033] Based on Example 1, in order to achieve the function of active noise reduction, such as Figures 1-7As shown, the active noise reduction assembly includes a vibrating plate 8 fixedly arranged at the center of the inner wall of the top end of the elevator shaft 1, and a power supply 9 and a controller 10 are arranged on both sides of the vibrating plate 8 to supply power and control the vibration frequency of the vibrating plate 8, the inner wall of the top end of the elevator shaft 1 is fixedly provided with an acoustic sensor 11, and the acoustic sensor 11, the controller 10, the vibrating plate 8 and the controller 10, and the vibrating plate 8 and the power supply 9 are all connected by wires 12, the model of the controller 10 is TMS320C6748DSP, the vibrating plate 8 is arranged in a multi-layer piezoelectric ceramic sheet stacking structure, when the acoustic sensor 11 detects that the noise in the elevator shaft 1 exceeds the preset threshold value such as 40dB, the signal is immediately transmitted to the controller 10, the controller 10 generates a reverse phase sound wave signal through the built-in algorithm, drives the vibrating plate 8 to vibrate to generate a sound wave with opposite phase to the original noise, and the two are superimposed and offset each other, for example, for the 100Hz low-frequency noise of the traction motor, the vibrating plate 8 synchronously generates a 100Hz reverse phase sound wave, and the noise peak is significantly reduced.
[0034] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.
[0035] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.
[0036] The above describes the present application and its embodiments, which are not restrictive, and the embodiments shown in the drawings are only one of the embodiments of the present application, and the actual structure is not limited thereto. In general, if a person skilled in the art is inspired by it, without departing from the purpose of the present application, without creative design, similar structure and embodiments of the technical solution can be designed, which should belong to the protection scope of the present application.
Claims
1. A silent home elevator, comprising an elevator shaft (1) and a car body (2) disposed inside the elevator shaft (1), characterized in that: A traction system (3) is fixedly installed on the inner wall of the elevator shaft (1). Guide rails (4) are fixedly installed on the opposite side walls inside the elevator shaft (1). A noise reduction mechanism is provided inside the guide rails (4). A connecting beam (5) is fixedly connected to the upper end of the car body (2). Guide shoes (6) that are adapted to the guide rails (4) are provided at both ends of the connecting beam (5). A guide wheel that is adapted to the traction system (3) is provided at the lower end of the connecting beam (5). An active noise reduction component is fixedly installed on the inner wall of the top of the elevator shaft (1).
2. A silent home elevator according to claim 1, characterized in that: The guide rail (4) is hollow inside, and the noise reduction mechanism includes a honeycomb layer (7) fixedly installed inside the guide rail (4), and each cell of the honeycomb layer (7) is filled with sound insulation cotton.
3. A silent home elevator according to claim 1 or 2, characterized in that: The guide rail (4) is T-shaped and made of metal composite material.
4. A silent home elevator according to claim 1, characterized in that: The active noise reduction component includes a vibrating plate (8) fixedly installed at the center of the inner wall at the top of the elevator shaft (1), and a power supply (9) and a controller (10) are respectively provided on both sides of the vibrating plate (8) to supply power and control its vibration frequency.
5. A silent home elevator according to claim 4, characterized in that: An acoustic sensor (11) is fixedly installed on the inner wall of the top of the elevator shaft (1), and wires (12) are connected between the acoustic sensor (11) and the controller (10), the diaphragm (8) and the controller (10), and the diaphragm (8) and the power supply (9).
6. A silent home elevator according to claim 4, characterized in that: The controller (10) is a TMS320C6748DSP.
7. A silent home elevator according to claim 4, characterized in that: The vibrating plate (8) adopts a multi-layer piezoelectric ceramic sheet stacking structure.