CN112061935A - High-speed elevator car front side current noise reduction device - Google Patents
High-speed elevator car front side current noise reduction device Download PDFInfo
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- CN112061935A CN112061935A CN202010924054.2A CN202010924054A CN112061935A CN 112061935 A CN112061935 A CN 112061935A CN 202010924054 A CN202010924054 A CN 202010924054A CN 112061935 A CN112061935 A CN 112061935A
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- car
- front side
- flow
- reduction device
- sill
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/02—Cages, i.e. cars
- B66B11/0226—Constructional features, e.g. walls assembly, decorative panels, comfort equipment, thermal or sound insulation
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- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
- Elevator Door Apparatuses (AREA)
Abstract
The invention discloses a front side guide flow noise reduction device of a high-speed elevator car, which is characterized by at least comprising a flow guide noise reduction device, wherein the flow guide noise reduction device is arranged in an area above a door machine of the car or/and in an area below a sill of the car. The invention solves the problem of overlarge aerodynamic noise in the lift car in the running process of the high-speed elevator, simultaneously has smaller volume, does not occupy the space of the top or the bottom of the lift car, avoids completely coating the top or the bottom of the lift car, is beneficial to reducing the total weight and the total height of the lift car, and is very beneficial to the installation of the lift car and the maintenance of the elevator.
Description
Technical Field
The invention relates to the technical field of elevators, in particular to a high-speed elevator car front side current noise reduction device for realizing high-speed elevator noise reduction.
Background
When the speed of the elevator exceeds 4m/s, the airflow speed in the hoistway can flow at a high speed along with the operation of the elevator, and the high-speed airflow and the elevator car act to generate obvious airflow noise, so that the riding sense in the elevator car is poor. At present, the main method for solving the problem of the pneumatic noise of the high-speed elevator in the industry is to add air guide hoods at the top and the bottom of the elevator car, and completely coat the top or the bottom of the elevator car in the air guide hoods, so that the movement of air flow passing through the elevator car becomes gentle, and the pneumatic noise is reduced. However, this type of method brings about a number of problems: the car is significantly weighted by the presence of such a conventional air guide sleeve, thereby causing waste of resources and an increase in cost; the presence of a conventional fairing increases the overall height of the car, requiring an increase in the height of the top floor and pit of the building; the traditional dome can increase the difficulty of elevator maintenance because of being installed at the top or bottom of the car, and the return rope wheel and the guide shoe of the dismounting and mounting of the car top become abnormal difficult and the like.
In order to solve the problems, after researching the pneumatic noise of the high-speed elevator, the pneumatic noise caused by the left side and the right side of the elevator car and the rear side far away from the elevator door is not obvious in the running process of the high-speed elevator, the pneumatic noise caused by the front side of the elevator car, namely the elevator door side is especially obvious, and the elevator door side is a main source of the pneumatic noise in the running process of the high-speed elevator.
The elevator door driving device is characterized in that a car door motor protrudes out of a car and is closest to a well wall, when an elevator moves upwards at a high speed, the door motor structure pushes air at the upper part to flow at a high speed, and when the door motor passes through a landing door head and a landing door sill protruding on the well wall at a high speed, high-speed airflow around the door motor collides with the structures protruding in the well to generate obvious pneumatic noise. Since the door machine is located close to the car door, the aerodynamic noise is transmitted into the car through the car door, causing discomfort to passengers. In the car that does not have the measure of making an uproar, when the elevator was run at high speed, every when passing through layer door sill and door head at car door machine, all can appear obvious rumbling in the car, and the comfort is relatively poor.
When the lift car descends at a high speed, the principle of pneumatic noise generation is similar to that described above because the lift car sill protrudes out of the lift car.
Disclosure of Invention
The invention aims to solve the technical problem of providing a high-speed elevator car front side current noise reduction device which has a simple structure, does not occupy the space of a car top and a car bottom, and can obviously reduce the aerodynamic noise in a car.
The technical problem to be solved by the invention can be realized by the following technical scheme:
the utility model provides a high-speed elevator car front side water conservancy diversion noise reduction device, its characterized in that includes a water conservancy diversion at least and falls the device of making an uproar, the water conservancy diversion noise reduction device sets up in the door machine top region of car or/and the sill below region of car.
In a preferred embodiment of the invention, the flow guiding and noise reducing device protrudes from the car door side of the car.
In a preferred embodiment of the invention, the flow guiding and noise reducing device is fused with other structures on the top of the car or/and other structures on the bottom of the car to form an integrated structure, so as to shield the area below the sill of the car and protrude out of the side of the car door of the car.
In a preferred embodiment of the invention, the flow guiding and noise reducing device is mounted on a door machine of the car or/and a sill of the car.
In a preferred embodiment of the invention, the flow-guiding and noise-reducing device has at least one flow-guiding surface on the windward side during the ascending or descending process of the elevator.
In a preferred embodiment of the present invention, the flow guiding surface has at least one flow guiding inclined surface.
In a preferred embodiment of the present invention, the number of the guide slopes is two, two guide slopes meet at a middle position of the door machine or a middle position of the sill, the meeting point is highest or lowest, and the two guide slopes incline from the meeting point to both sides of the car.
In a preferred embodiment of the invention, the width of the flow guiding and noise reducing device is the same as the thickness of the door machine or the thickness of the sill, the length of the flow guiding and noise reducing device does not exceed the width of the door machine or the width of the sill, and the height of the flow guiding and noise reducing device does not exceed the net height of the elevator car.
In a preferred embodiment of the present invention, the flow guiding and noise reducing device includes a housing, and the housing is provided with a plurality of sound absorbing holes.
In a preferred embodiment of the present invention, the inside of the outer case is filled with a sound absorbing material.
By adopting the technical scheme, the invention solves the problem of overlarge aerodynamic noise in the lift car in the running process of the high-speed elevator, has smaller volume, does not occupy the space of the top or the bottom of the lift car, avoids completely coating the top or the bottom of the lift car, is favorable for reducing the total weight of the lift car and the total height of the lift car, and is very favorable for mounting the lift car and maintaining the elevator.
Drawings
Fig. 1 is a schematic view of an installation position of the flow guiding and noise reducing device of the present invention.
Fig. 2 is a side view of fig. 1.
Detailed Description
The invention is further described below in conjunction with the appended drawings and detailed description.
Referring to fig. 1 and 2, the high-speed elevator car front side flow noise reduction device for realizing high-speed elevator noise reduction shown in the figures comprises a flow guiding noise reduction device which is divided into a door machine flow guiding noise reduction device 10 and a sill flow guiding noise reduction device 20.
The door machine flow guiding and noise reducing device 10 is installed above a door machine 40 of the car 30, and the sill flow guiding and noise reducing device 20 is installed below a sill 50 of the car 30.
The gantry crane diversion noise reduction device 10 and the sill diversion noise reduction device 20 both comprise a shell 11, 21 and sound absorption materials filled in the shell 11, 21; the housings 11, 21 are provided with a plurality of sound absorbing holes 11a, 21 a. In particular, the housing 11, 21 is prepared using a perforated plate on which a plurality of sound absorbing holes 11a, 21a are formed.
The width of the whole gantry crane diversion noise reduction device 10 is the same as the thickness of the gantry crane 40, and the length does not exceed the width of the gantry crane 40. The width of the whole sill flow-guiding noise-reducing device 20 is the same as the thickness of the sill 50, and the length does not exceed the width of the sill 50. The heights of the door machine flow guiding noise reduction device 10 and the sill flow guiding noise reduction device 20 do not exceed the net height of the cage 30.
The windward side of the door motor diversion noise reduction device 10 and the sill diversion noise reduction device 20 in the ascending or descending process of the elevator is provided with two diversion inclined planes 12, 13, 22 and 23. The two flow guiding inclined planes 12 and 13 of the door motor flow guiding noise reduction device 10 are intersected at the middle position of the door motor 40, the position of an intersection point A is the highest, and the two flow guiding inclined planes 12 and 13 are inclined downwards from the intersection point A to the two sides of the elevator car 30. The two diversion inclined planes 22 and 23 of the sill diversion noise reduction device 20 are intersected at the middle position of the door machine 40, the position of an intersection point B is the lowest, and the two diversion inclined planes 22 and 23 are inclined upwards from the intersection point B to the two sides of the elevator car 30.
The working principle of the invention is as follows:
through a large amount of research and test analysis, when the car 30 of the traditional square elevator goes up at a high speed, the contribution degree of the front side, the rear side, the left side and the right side of the car 30 to the pneumatic noise inside the car 30 is different, and the main source of the pneumatic noise in the car 30 is the front side (the door side) of the car 30: because the door machine 40 protrudes out of the car 30 and the landing sill 60 and the landing door head 70 protrude out of the wall surface of the hoistway wall 80, when the door machine 40 of the car 30 passes through the landing sill 60 and the landing door head 70 at a high speed, the high-speed airflow at the door machine 40 is blocked at the landing sill 60 and the landing door head 70 to generate turbulence, and then, a large pneumatic noise is generated at the door machine 40. Since the door machine 40 is close to the door of the car 30, the noise is very likely to be transmitted into the car 30 to cause discomfort to passengers. Similarly, when the car 30 travels at a high speed, the aerodynamic noise mainly originates from the sill 50 protruding from the car 30.
The shells 11 and 21 of the door machine diversion and noise reduction device 10 and the sill diversion and noise reduction device 20 are made of perforated plates, and sound-absorbing materials are filled in the shells 11 and 21 and are arranged on the upper part of the door machine 30 or the lower part of the sill 50.
As shown in fig. 1 and 2. When the car 30 moves upward: (only the ascending part will be described below, and in the descending, the diversion and noise reduction device 20 of the sill below the landing sill 50 functions similarly to the ascending)
In the first aspect, the guiding and noise reducing device 10 of the gantry crane installed above the gantry crane 40 enables high-speed airflow to flow to both sides of the car 30 due to the guiding inclined surface 12 and the guiding inclined surface 13, which not only reduces airflow flowing into the front part of the car 30 but also reduces the flow velocity of airflow in the front part of the car 30, thereby reducing aerodynamic noise from the source.
In the second aspect, since the guiding and noise reducing device 10 of the gantry crane is installed above the gantry crane 40 and has a certain height, when the car door passes through the landing sill 60 and the landing door head 70, the pneumatic noise is generated at the position which is no longer at the gantry crane 40 but is higher than the guiding inclined plane 12 and the guiding inclined plane 13 of the guiding and noise reducing device 10 of the gantry crane 40. Thus, the distance between the pneumatic noise source and the car door is increased by the presence of the door guiding sound absorbing device 10, and the noise conducted into the car 30 is reduced.
In the third aspect, because the two diversion inclined planes 12 and 13 of the gantry crane diversion noise reduction device 10 are inclined planes, the airflow at the upper part of the gantry crane diversion noise reduction device 10 does not simultaneously pass through the landing door head 70 or the landing door sill 60 (the airflow at the upper part of the traditional gantry crane 40 simultaneously passes through the landing door head 70 or the landing door sill 60), so that the generated aerodynamic noise is much lower than that of the non-inclined plane (the upper edge of the traditional gantry crane).
In the fourth aspect, since the housing 11 of the door motor flow guiding and noise reducing device 10 is a perforated plate filled with sound absorbing material, the aerodynamic noise generated near the device is partially absorbed by the door motor flow guiding and noise reducing device 10, so that the noise transmitted to the inside of the car 30 is reduced.
The shapes and structures of the gantry crane flow guiding and noise reducing device 10 and the sill flow guiding and noise reducing device 20 on the front side of the lift car 30 can also have other forms:
the shells 11 and 21 of the elevator car can greatly improve the aerodynamic noise in the car 30 by only utilizing the characteristics of the first, second and third aspects without using perforated plates (and without filling sound absorbing materials inside);
the two diversion inclined planes 12, 13, 22 and 23 can adopt non-inclined planes (or can adopt a part of inclined planes and a part of non-inclined planes), and the pneumatic noise in the car can be greatly improved only by utilizing the characteristics of the second aspect.
The structures of the door machine guiding noise reduction device 10 and the sill guiding noise reduction device 20 can not be directly contacted with the door machine 40 or the sill 50, and only need to be arranged in the area above the door machine 40 or the sill 50 and protrude out of the front side of the car 30, so that the pneumatic noise in the car 30 can be improved;
the structure of the door machine flow guiding and noise reducing device 10 can be fused with other structures at the top of the car 30 or the structure of the sill flow guiding and noise reducing device 20 can be fused with other structures at the bottom of the car 30 to form an integrated structure, so that the upper area of the door machine 40 or the lower area of the sill 40 is shielded and protrudes out of the front side of the car 30, and the aerodynamic noise in the car 30 can also be improved;
the door machine guiding noise reduction device 10 and the sill guiding noise reduction device 20 can be simultaneously or respectively applied to the upper part of the door machine 40 and the lower part of the sill 50 of the car 30 according to the requirements, and the principle is consistent with the above.
The invention solves the problem of overlarge aerodynamic noise in the car 30 in the running process of the high-speed elevator, simultaneously has smaller volume, does not occupy the space of the car top or the car bottom, avoids completely coating the car top or the car bottom, is beneficial to reducing the total weight of the car 30 and the total height of the car, and is very beneficial to the installation of the car 30 and the maintenance of the elevator.
Claims (10)
1. The utility model provides a high-speed elevator car front side current noise reduction device, its characterized in that includes a water conservancy diversion noise reduction device at least, the water conservancy diversion noise reduction device sets up in the door machine top region of car or/and the sill below region of car.
2. A high speed elevator car front side flow noise reducer as defined in claim 1, wherein said flow noise reducer protrudes from the side of the car door of said car.
3. The front side flow noise reducer of high-speed elevator car of claim 1, wherein the flow noise reducer is integrated with other structures on the top of the car or/and other structures on the bottom of the car to form an integrated structure, and the integrated structure shields the area below the sill of the car and protrudes out of the car door side of the car.
4. The front side flow noise reduction device of the high-speed elevator car is characterized in that the flow noise reduction device is mounted on a door machine of the car or/and a sill of the car.
5. The front side flow noise reducer of high-speed elevator car according to claim 1, wherein the flow noise reducer has at least one flow guide surface on the windward side during ascending or descending of the elevator.
6. The high-speed elevator car front side flow noise reduction device according to claim 1, wherein the flow guide surface has at least one flow guide slope.
7. The front side flow noise reduction device of the high-speed elevator car according to claim 5, wherein the number of the flow guiding slopes is two, the two flow guiding slopes meet at the middle position of the door motor or the middle position of the sill, the meeting point is highest or lowest, and the two flow guiding slopes incline from the meeting point to the two sides of the car.
8. The front side flow noise reducer of high-speed elevator car as claimed in any one of claims 1 to 7, wherein the width of the flow noise reducer is the same as the thickness of the door machine or the thickness of the sill, the length of the flow noise reducer does not exceed the width of the door machine or the width of the sill, and the height of the flow noise reducer does not exceed the net height of the car.
9. The front side flow-guiding and noise-reducing device of the high-speed elevator car as claimed in any one of claims 1 to 7, wherein the flow-guiding and noise-reducing device comprises a housing, and a plurality of sound-absorbing holes are formed in the housing.
10. The high-speed elevator car front side flow noise reducing device according to claim 9, wherein sound absorbing material is filled inside the outer casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010924054.2A CN112061935A (en) | 2020-09-04 | 2020-09-04 | High-speed elevator car front side current noise reduction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010924054.2A CN112061935A (en) | 2020-09-04 | 2020-09-04 | High-speed elevator car front side current noise reduction device |
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| Publication Number | Publication Date |
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| CN112061935A true CN112061935A (en) | 2020-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010924054.2A Pending CN112061935A (en) | 2020-09-04 | 2020-09-04 | High-speed elevator car front side current noise reduction device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115367592A (en) * | 2022-08-16 | 2022-11-22 | 康力电梯股份有限公司 | Turbulent flow noise reduction device for high-speed elevator car |
-
2020
- 2020-09-04 CN CN202010924054.2A patent/CN112061935A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115367592A (en) * | 2022-08-16 | 2022-11-22 | 康力电梯股份有限公司 | Turbulent flow noise reduction device for high-speed elevator car |
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