Noise-reducing elevator installation

Abstract

The application discloses a noise-reducing elevator device in the technical field of personnel transportation equipment, which comprises a car, a ventilating cylinder arranged on the car, a fan arranged at the bottom of the ventilating cylinder, a straight-edge elliptical shape of the cross section of the ventilating cylinder, an arc edge and a straight edge of the ventilating cylinder, a plurality of first rubber plates fixedly arranged on the arc edge from top to bottom, a plurality of second rubber plates fixedly arranged on the straight edge from top to bottom, a sound-absorbing cylinder arranged in the ventilating cylinder, the sound-absorbing cylinder being formed by two straight plates and two arc plates, the straight plates and the arc plates being provided with a plurality of micropores, the arc plates being fixedly connected with the plurality of first rubber plates corresponding to the arc edge, the straight plates being fixedly connected with the plurality of second rubber plates corresponding to the straight edge, gaps being arranged at the bottom of the arc plates and the bottom of the straight plates and being isolated from the fan, and the plurality of micropores, the first rubber plates and the second rubber plates being capable of achieving a better noise-reducing effect.

Description

Technical Field

[0001] This invention relates to the field of personnel transportation equipment technology, and specifically to a noise-reducing elevator device. Background Technology

[0002] Noise-reducing elevator equipment refers to permanent transportation equipment that moves within a shaft, serving several specific floors within a building, and whose car operates on at least two rigid tracks perpendicular to the horizontal plane or at an angle of less than 15 degrees to the vertical. Typically, the reciprocating motion of the elevator car within the shaft generates significant wind resistance, which, in conjunction with the car, produces wind resistance noise. Furthermore, the rapid increase in air velocity creates significant separation and discontinuous vortices in the airflow within the car, resulting in violent fluctuations and eddy noise. Existing technology typically incorporates air inlets at the top of the elevator car, with silencers installed at these inlets. This allows air from the shaft to be introduced into the elevator car through the air inlets, reducing the contact between air and the elevator car. Additionally, the silencers also reduce the noise of the incoming air, thus addressing the noise problem.

[0003] Referring to existing technology CN115339987B, a noise-reducing elevator car without a machine room, the car includes a ventilation opening at the top, a ventilation cylinder fixedly connected to the ventilation opening, a mounting plate bolted to the bottom of the ventilation cylinder, a fan fixedly mounted on the mounting plate, and a micro-perforated cylinder with multiple evenly distributed micropores coaxially arranged inside the ventilation cylinder. The mounting plate and the bottom of the micro-perforated cylinder abut against each other. In this prior art, after removing the mounting plate, the micro-perforated cylinder slides directly out of the ventilation cylinder, can be cleaned, and can be reused, ensuring the noise reduction effect of the micro-perforated cylinder.

[0004] Furthermore, the bottom of the micro-perforated cylinder is detached from the mounting plate. This is to prevent the micro-perforated cylinder from contacting the mounting plate, thus preventing vibrations generated by the fan from being transmitted to the micro-perforated cylinder through the mounting plate, thereby preventing resonance in the micro-perforated cylinder and affecting its noise reduction effect. However, the vibrations generated by the fan include both vertical and horizontal vibrations. Existing technology only isolates the micro-perforated cylinder and the mounting plate in the vertical direction. Therefore, the horizontal vibrations generated by the fan can still be transmitted to the micro-perforated cylinder through the mounting plate and ventilation duct, causing resonance in the micro-perforated cylinder and affecting its noise reduction effect. Summary of the Invention

[0005] The present invention aims to provide a noise reduction elevator device to solve the problem that the lateral vibration generated by the operation of the existing fan causes resonance in the micro-perforated cylinder, which affects its noise reduction effect.

[0006] To address the above problems, the present invention provides the following technical solution:

[0007] A noise-reducing elevator device includes a car, a ventilation duct provided in the car, and a fan disposed at the bottom of the ventilation duct. The ventilation duct has a straight-sided elliptical cross-section, including an arc edge and a straight edge. Multiple first rubber plates are fixedly mounted on the arc edge from top to bottom, and multiple second rubber plates are fixedly mounted on the straight edge from top to bottom. The device also includes a silencer disposed within the ventilation duct, which is formed by two straight plates and two arc-shaped plates. The straight plates and arc-shaped plates have multiple micro-holes, and a rubber strip is fixedly mounted at the connection between the straight plates and arc-shaped plates. The arc-shaped plates are fixedly connected to multiple first rubber plates corresponding to the arc edge, and the straight plates are fixedly connected to multiple second rubber plates corresponding to the straight edge. Both the bottom of the arc-shaped plates and the bottom of the straight plates have gaps isolating them from the fan. A cylinder is symmetrically fixedly mounted on the ventilation duct, and the movable end of the cylinder passes through the ventilation duct and is fixedly connected to the corresponding arc-shaped plate. A sound-absorbing space is formed between the arc-shaped plate and the ventilation duct, and between the straight plate and the ventilation duct.

[0008] Working principle and beneficial effects of the present invention:

[0009] This design uses a ventilation duct for car ventilation. When the car moves up and down in the hoistway, the air flowing in the hoistway enters the car through the ventilation duct. A fan is also installed at the bottom of the ventilation duct; when the fan operates, it generates suction to draw air into the car, enhancing air circulation. Both the bottom of the curved plate and the bottom of the straight plate have gaps that isolate them from the fan. Therefore, the vertical vibration generated by the fan will not be transmitted to the curved plate and the straight plate. Furthermore, the curved plate is fixedly connected to the ventilation duct via multiple first rubber plates, and the straight plate is fixedly connected to the ventilation duct via multiple second rubber plates. Since the first rubber plates are elastic, their deformation effectively buffers the lateral vibration generated by the fan, thus effectively solving the technical problem of resonance caused by lateral vibration in the silencer in existing technologies, thereby improving the silencer's noise reduction effect.

[0010] Furthermore, this application also has two usage modes. When using the noise-reducing elevator equipment during the day, because the noise-reducing elevator equipment is used frequently and there is a lot of ambient noise, people are not sensitive to noise intensity, but are more sensitive to high-pitched noise. Since the curved plate is slidably connected between the straight plates on both sides, and the ventilation cylinder is symmetrically fixed with cylinders, the moving end of the cylinder passes through the ventilation cylinder and is fixedly connected to the corresponding curved plate. The cylinder drives the curved plate to move towards the ventilation cylinder, and the curved plate squeezes all the first rubber plates to bend (arch upwards). Multiple sound-absorbing valleys are formed on the first rubber plates, and the curved shape is reduced. The sound-absorbing space between the plate and the ventilation duct remains unchanged, while the sound-absorbing space between the straight plate and the ventilation duct remains unchanged. When noise is weakened by multiple micro-holes in the straight plate and the curved plate, it propagates into the sound-absorbing space. Multiple first rubber plates and multiple second rubber plates play a role in separating noise, thereby reducing the propagation of noise in the space. This can reduce echo and noise intensity. In addition, multiple first rubber plates and multiple second rubber plates can absorb noise. The sound-absorbing space between the curved plate and the ventilation duct is small, thereby shortening the propagation path of noise and allowing noise to come into contact with the sound-absorbing valleys as much as possible. Multiple sound-absorbing valleys can absorb high-pitched noise.

[0011] When noise-reducing elevator equipment is used at night, because the equipment is not used frequently and the environment is quiet, people are more sensitive to noise intensity. At this time, the cylinder drives the arc plate back to its initial position, thereby increasing the sound-absorbing space between the arc plate and the ventilation duct. Furthermore, the first rubber plate is in an uncompressed state, so its length is longer than when used during the day. Multiple first rubber plates and multiple second rubber plates play a better role in separating noise, thereby reducing noise propagation in the space and reducing echoes and noise intensity.

[0012] 1. This application features gaps at the bottom of both the curved plate and the straight plate, isolating them from the fan. Therefore, the vertical vibrations generated by the fan are not transmitted to the curved and straight plates. Furthermore, the curved plate is fixedly connected to the ventilation duct via multiple first rubber plates, and the straight plate is fixedly connected to the ventilation duct via multiple second rubber plates. Since the first rubber plates are elastic, their deformation effectively buffers the lateral vibrations generated by the fan, thus effectively solving the technical problem of resonance in the silencer caused by lateral vibrations in existing technologies, thereby improving the silencer's noise reduction effect. 2. During daytime use, by changing the shape of the first rubber plates, multiple noise-absorbing valleys are created, and the noise-absorbing space between the curved plate and the ventilation duct is reduced, decreasing the noise propagation path in space. This allows the multiple noise-absorbing valleys to fully absorb high-pitched noise. At night, the noise-absorbing space is larger, and the length of the first rubber plates is longer than during the day. The multiple first and second rubber plates better isolate noise, reducing noise propagation in space and lowering echoes and noise intensity. 3. Multiple micropores, a first rubber plate, and a second rubber plate can achieve better noise reduction.

[0013] Furthermore, the movable end of the cylinder is fixedly connected to the corresponding arc-shaped plate via a rubber block. The rubber block serves to buffer vibrations, and this arrangement prevents vibrations generated by the fan from being transmitted to the arc-shaped plate through the movable end of the cylinder, thus preventing the arc-shaped plate from resonating.

[0014] Furthermore, multiple first and second rubber plates are evenly spaced. This optimized design can evenly distribute the noise reduction space, thereby achieving better noise absorption.

[0015] Furthermore, the car is equipped with air deflectors at both the top and bottom, and these air deflectors have multiple grooves. These grooves help reduce eddies, lower wind noise, and improve the stability of the car during operation.

[0016] Furthermore, the ventilation ducts are symmetrically arranged along the axis of the car, with one ventilation duct facing the direction of the car's upward movement and the other facing the direction of the car's downward movement. This arrangement allows for noise reduction through the micro-perforated cylinders inside the ventilation ducts during the car's vertical movement.

[0017] Furthermore, the diameter of the microholes on the straight plate is larger than the diameter of the microholes on the curved plate. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of a noise reduction elevator device according to the present invention;

[0019] Figure 2 for Figure 1 Top view of the central ventilation duct;

[0020] Figure 3 for Figure 1 Vertical cross-sectional view of the central ventilation duct;

[0021] Figure 4 for Figure 3 A schematic diagram of the structure when the silencing space is reduced. Detailed Implementation

[0022] The following detailed description illustrates the specific implementation method:

[0023] The reference numerals in the accompanying drawings include: car body 1, ventilation duct 2, straight plate 3, curved edge 4, first rubber plate 5, second rubber plate 6, straight edge 7, rubber strip 8, curved plate 9, cylinder 10, soundproof space 11, fan 12, soundproof valley 13.

[0024] In the following statements, directional terms such as "left," "right," "up," and "down" are based on the directions shown in the diagram. In practice, if the corresponding structures are changed in the same direction based on the direction while maintaining their relative positions, it will not affect the implementation of the plan.

[0025] Example: A noise-reducing elevator device, such as Figure 1 As shown, the system includes a car 1, a ventilation duct 2 fixedly mounted on the top of the car 1, and a fan 12 fixedly mounted at the bottom of the ventilation duct 2; Figure 2 As shown, the cross-sectional shape of the ventilation duct 2 is an ellipse with straight side 7. The ventilation duct 2 includes an arc side 4 and a straight side 7, as shown. Figure 3 As shown, the arc edge 4 is fixed with 7 first rubber plates 5 from top to bottom, and the straight edge 7 is fixed with 7 second rubber plates 6 from top to bottom; it also includes a silencer cylinder set in the ventilation cylinder 2, which is formed by two straight plates 3 and two arc plates 9. The straight plates 3 and arc plates 9 are provided with multiple micro holes, and a sealing rubber strip 8 is fixed at the connection between the straight plates 3 and arc plates 9. The rubber strip 8 has pleats.

[0026] The arc-shaped plate 9 and the seven first rubber plates 5 corresponding to the arc edge 4 are fixedly connected, and the straight plate 3 and the seven second rubber plates 6 corresponding to the straight edge 7 are fixedly connected. The bottom of the arc-shaped plate 9 and the bottom of the straight plate 3 are provided with gaps that isolate them from the fan 12. The ventilation cylinder 2 is symmetrically fixed with cylinders 10. The movable end of the cylinder 10 passes through the ventilation cylinder 2 and is fixedly connected to the corresponding arc-shaped plate 9. A sound-absorbing space 11 is formed between the arc-shaped plate 9 and the inner wall of the ventilation cylinder 2, and between the straight plate 3 and the inner wall of the ventilation cylinder 2. The hardness of the two ends of the first rubber plate 5 is greater than that of the middle part.

[0027] like Figure 3As shown, this scheme uses ventilation duct 2 for ventilation of car 1. When car 1 moves up and down in the shaft, the air flowing in the shaft enters car 1 through ventilation duct 2. A fan 12 is also installed at the bottom of ventilation duct 2. When the fan 12 operates, it generates suction to draw air into car 1, enhancing air circulation. The bottom of the curved plate 9 and the bottom of the straight plate 3 are provided with gaps to isolate them from the fan 12. Therefore, the vertical vibration generated by the fan 12 will not be transmitted to the curved plate 9 and the straight plate 3. Furthermore, the curved plate 9 is fixedly connected to ventilation duct 2 by seven first rubber plates 5, and the straight plate 3 is fixedly connected to ventilation duct 2 by seven second rubber plates 6. Since the first rubber plates 5 are elastic, their deformation can effectively buffer the lateral vibration generated by the fan 12, thereby effectively solving the technical problem of resonance caused by lateral vibration in the silencer in existing technologies, thus improving the noise reduction effect.

[0028] Furthermore, this application also has two usage modes, such as Figure 4 As shown, when noise-reducing elevator equipment is used during the day, due to frequent use and a lot of ambient noise, people are less sensitive to noise intensity but more sensitive to high-pitched noise. A cylinder 10 is symmetrically fixed to the ventilation duct 2. The movable end of the cylinder 10 passes through the ventilation duct 2 and is fixedly connected to the corresponding arc-shaped plate 9. The cylinder 10 drives the arc-shaped plate 9 to move towards the inner wall of the ventilation duct 2. The arc-shaped plate 9 compresses all the first rubber plates 5, causing them to bend (arch upwards). A sound-absorbing valley 13 is formed on the first rubber plate 5, and the sound-absorbing space 11 between the arc-shaped plate 9 and the inner wall of the ventilation duct 2 is reduced. Meanwhile, the straight plate 3... The sound-absorbing space 11 between the curved plate 9 and the ventilation duct 2 remains constant. After noise is weakened by the multiple micro-holes in the straight plate 3 and the curved plate 9, it propagates into the sound-absorbing space 11. The 14 first rubber plates 5 and 14 second rubber plates 6 act as noise separators, thereby reducing noise propagation in the space and lowering echo and noise intensity. Furthermore, the 14 first rubber plates 5 and 14 second rubber plates 6 can absorb noise. The smaller sound-absorbing space 11 between the curved plate 9 and the ventilation duct 2 shortens the noise propagation path, allowing the noise to contact the sound-absorbing valleys 13 as much as possible. The 14 sound-absorbing valleys 13 can absorb high-pitched noise. Moreover, a smaller sound-absorbing space 11 between the curved plate 9 and the ventilation duct 2 changes the degree to which the curved plate 9 compresses the first rubber plate 5, causing the first rubber plate 5 to generate more sound-absorbing valleys 13.

[0029] like Figure 3As shown, when noise-reducing elevator equipment is used at night, since the equipment is not used frequently and the environment is quiet, people are more sensitive to noise intensity. At this time, the cylinder 10 drives the arc plate 9 back to its initial position, thereby increasing the sound-absorbing space 11 between the arc plate 9 and the ventilation duct 2. The first rubber plate 5 is in an uncompressed state, so the length of the first rubber plate 5 is longer than that used during the day. The 14 first rubber plates 5 and 14 second rubber plates 6 play a better role in separating noise, thereby reducing the propagation of noise in the space and reducing echo and noise intensity.

[0030] This application provides gaps at the bottom of both the arc-shaped plate 9 and the straight plate 3 to isolate them from the fan 12. Therefore, the vertical vibration generated by the fan 12 will not be transmitted to the arc-shaped plate 9 and the straight plate 3. Furthermore, the arc-shaped plate 9 is fixedly connected to the ventilation duct 2 by seven first rubber plates 5, and the straight plate 3 is fixedly connected to the ventilation duct 2 by seven second rubber plates 6. Since the first rubber plates 5 are elastic, their deformation can effectively buffer the lateral vibration generated by the fan 12, thereby effectively solving the technical problem of resonance of the silencer caused by lateral vibration in the prior art, and improving the silencing effect of the silencer.

[0031] During daytime use, by altering the shape of the first rubber plate 5, multiple sound-absorbing valleys 13 are created, and the sound-absorbing space 11 between the curved plate 9 and the ventilation duct 2 is reduced, thus decreasing the noise propagation path in the space and allowing the multiple sound-absorbing valleys 13 to fully absorb high-pitched noise. At night, the sound-absorbing space 11 is larger, and the length of the first rubber plate 5 is longer than during the day. The multiple first rubber plates 5 and multiple second rubber plates 6 better isolate noise, thereby reducing noise propagation in the space and lowering echoes and noise intensity. The multiple micropores, the first rubber plate 5, and the second rubber plate 6 contribute to better noise reduction.

[0032] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

Claims

1. A noise-reducing elevator device, comprising a car, the car being provided with a ventilation duct, and further comprising a fan disposed at the bottom of the ventilation duct; characterized in that: The ventilation duct has a straight-sided elliptical cross-section and includes an arc edge and a straight edge. Multiple first rubber plates are fixedly mounted on the arc edge from top to bottom, and multiple second rubber plates are fixedly mounted on the straight edge from top to bottom. It also includes a silencer inside the ventilation duct, which is formed by two straight plates and two arc-shaped plates. The straight and arc-shaped plates have multiple micro-holes, and a rubber strip is fixedly mounted at the connection point of the straight and arc-shaped plates. The arc-shaped plates are fixedly connected to multiple first rubber plates corresponding to the arc edge, and the straight plates are fixedly connected to multiple second rubber plates corresponding to the straight edge. Both the bottom of the arc-shaped plates and the bottom of the straight plates have gaps to isolate them from the fan. A cylinder is symmetrically fixedly mounted on the ventilation duct, and the movable end of the cylinder passes through the ventilation duct and is fixedly connected to the corresponding arc-shaped plate. A sound-absorbing space is formed between the arc-shaped plate and the ventilation duct, and between the straight plate and the ventilation duct.

2. The noise-reducing elevator equipment according to claim 1, characterized in that: The movable end of the cylinder is fixedly connected by a rubber block and a corresponding arc-shaped plate.

3. The noise-reducing elevator equipment according to claim 2, characterized in that: Multiple first rubber plates and second rubber plates are evenly spaced.

4. The noise-reducing elevator equipment according to claim 3, characterized in that: The car is equipped with a flow guide at both the top and bottom, and the flow guide has multiple grooves.

5. The noise-reducing elevator equipment according to any one of claims 1 to 4, characterized in that: The ventilation ducts are symmetrically arranged along the axis of the car, with one ventilation duct facing the direction in which the car moves upward and the other ventilation duct facing the direction in which the car moves downward.

6. The noise-reducing elevator equipment according to claim 5, characterized in that: The diameter of the microholes on the straight plate is larger than that on the curved plate.

7. The noise-reducing elevator equipment according to claim 6, characterized in that: The hardness at both ends of the first rubber sheet is greater than that in the middle.

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