Hemispherical support for measuring acoustic data

Abstract

The utility model relates to a hemispherical support for measuring acoustic data, which is characterized in that a bottom pull rod and a bottom hinge seat are mounted through a positioning pin, so that the stability of the support is improved, the support is not easy to shake in the measurement process, and the measurement result is more accurate. The detachable structure is convenient to transport, the meridian rod and the bottom pull rod can be replaced according to the size of a measured object, the top hinge and the bottom hinge do not need to be replaced, and the application range of the support is wider. When an object to be measured is placed in, only the meridian rod needs to be detached and lifted, the whole support does not need to be moved, and the burden of measuring personnel is relieved. Compared with the prior art, the device has the advantages of stability, accurate measurement, convenience in installation and operation and the like.

Description

Technical Field

[0001] The utility model relates to the field of acoustic measurement equipment, in particular to a hemispherical bracket for measuring acoustic data. Background Art

[0002] In the field of acoustics, according to standard measurement methods, some measurements require a hemispherical bracket that is machined from a single piece of metal to the required size. This shape effectively secures the acoustic measurement point and microphone, ensuring accurate measurements. However, because the parts are machined in one piece, the cost of the parts is high. Furthermore, this bracket is a fixed-size, integral unit, serving as a specialized measurement tool. Different measurement objects require different brackets, limiting its applicability. Furthermore, due to its use of metal, it is relatively heavy, making larger brackets difficult to machine and transport, and also making it difficult to replace the measurement object within the bracket during the measurement process. Therefore, ensuring a stable measurement bracket, a fixed measurement point, and ease of machining, handling, and operation remains a technical challenge. Utility Model Content

[0003] The purpose of the present utility model is to provide a hemispherical bracket for measuring acoustic data in order to overcome the defects of the above-mentioned prior art. The bracket adopts a detachable structure to facilitate transportation and use, and the size of the meridian rod and the bottom pull rod can be replaced according to the size of the measured object without replacing the top and bottom hinges, thereby enhancing the applicability of the bracket. At the same time, a rotating shaft structure is provided in the top hinge to make the measurement process more convenient.

[0004] The purpose of the utility model can be achieved through the following technical solutions:

[0005] According to one aspect of the present invention, a hemispherical bracket for measuring acoustic data is provided, comprising a top hinge seat, a meridian rod, a base pull rod and a bottom hinge seat.

[0006] There are six square grooves evenly distributed on the side of the top hinge seat for connecting six meridian rods; the bottom of each meridian rod is inserted into the bottom hinge seat and connected to each other through the base tie rod.

[0007] Furthermore, the top hinge seat includes an upper top hinge seat and a lower top hinge seat, and the upper top hinge seat is provided with a top positioning pin for fixing the upper and lower top hinge seats.

[0008] The top hinge seat further comprises a rotating shaft groove, which is arranged on both sides of the square groove.

[0009] The rotating shaft groove is formed by splicing two semi-cylindrical grooves of the top hinge seat and the lower top hinge seat. The rotating shaft is inserted into the meridian rod and placed in the rotating shaft groove.

[0010] Furthermore, the top of the meridian rod is arc-shaped and is provided with a rotating shaft socket.

[0011] The bottom of the meridian rod is hollow and connected to the column part of the bottom hinge seat.

[0012] Furthermore, grooves matching the shape of the meridian rod are provided at both ends of the bottom pull rod.

[0013] Both ends of the bottom pull rod are also provided with positioning pin mounting holes, and the base part of the bottom hinge seat is also provided with positioning pin mounting holes. The bottom pull rod and the bottom hinge seat are connected through the bottom positioning pin.

[0014] Furthermore, a microphone mounting hole is provided on the side of the meridian pole, and the microphone is inserted into a set position according to measurement requirements.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) Increase stability and improve measurement accuracy: The base pull rod and the bottom hinge seat make the bracket more stable. The side is composed of an integral meridian rod, which is not easy to loosen or shake. The microphone can be inserted into the microphone mounting hole on the meridian rod according to the measurement requirements. The position is accurate and the installation is stable, thereby reducing measurement errors and improving accuracy.

[0017] (2) Easy to operate: When placing the object to be measured during the measurement process, you only need to lift the meridian rod instead of picking up the entire metal bracket, which reduces the burden of manual operation and facilitates the operation of the measurement personnel.

[0018] (3) Easy to install and transport, with a wide range of applications: The meridian rod and bottom pull rod are assembled with the top and bottom hinges in a detachable manner. They can be disassembled and assembled for packaging and transportation. The size of the meridian rod and bottom pull rod can be replaced according to the size of the measured object. The top and bottom hinges do not need to be replaced, and it is suitable for objects of various sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a diagram of the structure of a hemispherical bracket used to measure acoustic data;

[0020] Figure 2 This is the connection structure diagram between the top anklet seat and the meridian rod;

[0021] Figure 3 It is a cross-sectional view of the top anklet seat and meridian rod;

[0022] Figure 4 The figure shows the overall structure of the bracket with the meridian pole lifted;

[0023] Figure 5This is the connection structure diagram of the bottom anklet seat, meridian rod and base pull rod;

[0024] Figure 6 This is a diagram of the working state of the hemispherical bracket used to measure acoustic data.

[0025] Explanation of the numbers in the figure: 1. Top hinge seat; 2. Microphone; 3. Meridian rod; 4. Base pull rod; 5. Bottom hinge seat; 6. Rotating shaft; 1-1. Upper top hinge seat; 1-2. Lower top hinge seat; 1-3. Top positioning pin; 1-5. Square groove; 4-1. Bottom positioning pin. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0027] In the acoustic sound pressure method for determining the sound power and energy levels of noise sources in anechoic and semi-anechoic chambers, standard methods for measuring acoustics have unified and clear standards for measuring points for acoustic data. Currently, hemispherical brackets are constructed using splicing methods. However, due to the use of soft materials or unstable meridian splicing, there are significant deviations in the positions of the acoustic measurement points and microphones, making it impossible to measure according to standard methods and resulting in inaccurate measurements. Other brackets are machined from a single piece of metal to the required size, forming a hemispherical bracket. However, since these brackets are manufactured in one piece, different brackets are required for different items being measured, and other related parts, such as microphone mounting hardware, also need to be customized. Furthermore, the brackets are relatively heavy and difficult to machine and transport.

[0028] like Figure 1 The figure shows a hemispherical bracket for measuring acoustic data, comprising a top hinge seat 1, meridian rods 3, base pull rods 4, and a bottom hinge seat 5. Six square grooves 1-5 are evenly distributed on the side of the top hinge seat 1 for connecting the six meridian rods 3. The bottom of each meridian rod 3 is hollow, inserted into the cylindrical portion of the bottom hinge seat 5, and connected to each other via the base pull rod 4. Each meridian rod 3 has a microphone mounting hole on the side, a total of 20 holes, and the microphone 2 is inserted into the set position according to measurement requirements. All components are made of metal to ensure the strength of the bracket and the accuracy of the measurement point.

[0029] The top installation and connection structure of the bracket is as follows Figure 2As shown, the top hinge base 1 includes an upper top hinge base 1-1 and a lower top hinge base 1-2. The upper top hinge base 1-1 is provided with a top positioning pin 1-3 that secures the upper and lower top hinge bases. The top hinge base 1 also includes a rotation axis groove 1-4, located on either side of the square groove 1-5. The rotation axis groove 1-4 is formed by joining two semi-cylindrical grooves of the top hinge base 1-1 and the lower top hinge base 1-2.

[0030] like Figure 3 The figure shows a cross-sectional view of the top anklet seat and the meridian rod. The top of the meridian rod 3 is arc-shaped and has a shaft socket. The shaft 6 is inserted into the meridian rod 3 and placed in the shaft groove 1-4. Figure 4 The figure shows the overall state of the bracket with the meridian rod 3 raised, so as to simplify the operation when placing and replacing the object to be measured.

[0031] like Figure 5 The diagram shows the connection structure of the bottom anklet base 5, the meridian rod 3, and the base tie rod 4. The bottom of the meridian rod 3 is hollow and connected to the cylindrical portion of the bottom hinge base 5. The ends of the bottom tie rod 4 are provided with grooves that match the shape of the meridian rod 3. The ends of the bottom tie rod 4 also have locating pin mounting holes, and the base of the bottom hinge base 5 also has locating pin mounting holes. The bottom tie rod 4 and the bottom hinge base 5 are connected by the bottom locating pin 4-1.

[0032] During the installation and measurement process of the embodiment, the bracket is assembled according to the hemispherical rule. The top hinge seat 1 is connected to the meridian rod 3 according to the equal division rule, and the base pull rod 4 is connected to the bottom hinge seat 5. After the top meridian rod 3 is connected, the bottom hinge seat 5 is spliced. The object to be measured is placed in the hemispherical bracket, and the microphone 2 is placed in the meridian rod 3 according to the measurement position point, and the installation is completed. After the microphone 2 is connected to the computer, the acoustic performance of the object to be measured is received and recorded by the microphone 2 after the sound is made. If the object to be measured needs to be replaced, the bottom of the corresponding meridian rod 3 is disassembled according to the space suitable for the size of the object to be measured, and it is lifted up without lifting the entire bracket. The working state of the bracket is as follows Figure 6 As shown in the figure, the bracket is easy to disassemble and install while ensuring stable and accurate measurements, and the measured object can be easily replaced, making measurement more convenient. The meridian rod 3 adopts an integrated design, making the bracket more stable. However, the top and bottom are detachable, making the entire bracket easy to install and transport. Different meridian rods 3 can be selected according to measurement requirements such as the size of the measured object. The other connecting parts are reusable, improving the utilization rate of each component and expanding its application range.

[0033] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A hemispherical bracket for measuring acoustic data, characterized in that: include, Top hinge base (1), meridian rod (3), base pull rod (4) and bottom hinge base (5), Six square grooves (1-5) are evenly distributed on the side of the top hinge seat (1) for connecting six meridian rods (3); the bottom of each meridian rod (3) is inserted into the bottom hinge seat (5) and connected to each other through the base pull rod (4).

2. The hemispherical bracket for measuring acoustic data according to claim 1, characterized in that: The top hinge seat (1) comprises an upper top hinge seat (1-1) and a lower top hinge seat (1-2); a top positioning pin (1-3) is provided on the upper top hinge seat (1-1) to fix the upper and lower top hinge seats.

3. The hemispherical bracket for measuring acoustic data according to claim 2, characterized in that: The top hinge seat (1) further comprises a rotating shaft groove (1-4) which is arranged on both sides of the square groove (1-5).

4. The hemispherical bracket for measuring acoustic data according to claim 3, characterized in that: The rotating shaft groove (1-4) is formed by splicing two semi-cylindrical grooves of the upper top hinge seat (1-1) and the lower top hinge seat (1-2).

5. The hemispherical bracket for measuring acoustic data according to claim 3, characterized in that: The rotating shaft (6) is inserted into the meridian rod (3) and placed in the rotating shaft groove (1-4).

6. The hemispherical bracket for measuring acoustic data according to claim 1, characterized in that: The top of the meridian rod (3) is arc-shaped and is provided with a rotating shaft socket.

7. The hemispherical bracket for measuring acoustic data according to claim 1, characterized in that: The bottom of the meridian rod (3) is hollow and connected to the column part of the bottom hinge seat (5).

8. The hemispherical bracket for measuring acoustic data according to claim 1, characterized in that: Both ends of the base pull rod (4) are provided with grooves that match the shape of the meridian rod (3).

9. The hemispherical bracket for measuring acoustic data according to claim 8, characterized in that: Both ends of the base pull rod (4) are also provided with positioning pin mounting holes, and the base portion of the bottom hinge seat (5) is also provided with positioning pin mounting holes, and the base pull rod (4) and the bottom hinge seat (5) are connected via the bottom positioning pin (4-1).

10. The hemispherical bracket for measuring acoustic data according to claim 1, characterized in that: A microphone mounting hole is provided on the side of the meridian rod (3), and the microphone (2) is inserted into a set position according to measurement requirements.

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