Rotary hemispherical microphone support

Abstract

The utility model relates to a rotary hemispherical microphone support which comprises a circular guide rail, a semi-arc truss and two bases which are combined in a segmented mode. A hinge is arranged at the combined position of the circular guide rail so as to realize an openable function; a plurality of microphone mounting clamps are arranged on the semicircular truss; the two bases are arranged at the two ends of the bottom of the semi-arc truss correspondingly, and each base is provided with a motor driving assembly, a driven wheel assembly, a guide assembly, an anti-overturning assembly, a locking assembly and a line concentration panel. Compared with the prior art, the semi-arc truss support is driven by the motor to do circular motion along the circular guide rail, so that the workload of operating a large-radius microphone support by testers can be greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of acoustic testing equipment technology, and in particular to a rotating hemispherical microphone stand. Background Technology

[0002] When acoustic testing requires the use of the "GBT 6882-2016 Acoustic Pressure Method for Determining the Sound Power Level and Sound Energy Level of a Noise Source: Precision Method for Anechoic Chambers and Semi-Anechoic Chambers", a hemispherical microphone stand needs to be built. Traditionally, for hemispherical stands with a small radius, a multi-lobed arc structure can be directly used. However, when the radius of the required microphone stand increases, especially when it is ≥3m, the operation becomes more complicated when the tester uses a multi-lobed arc structure. At the same time, the large radius of the stand also affects passage.

[0003] Patent CN202311473205.7 discloses a sound power testing device, comprising: a hemispherical support and a ball-head rod. The hemispherical support includes a base frame and several longitudinal rods, which are arc-shaped and arranged radially in an umbrella shape. The upper ends of the longitudinal rods are connected to each other, and the lower ends of the longitudinal rods are connected to the base frame. Multiple microphones are adjustablely mounted on each longitudinal rod. One end of the ball-head rod is connected to a ball joint located at the center of the hemispherical support, allowing the other end of the ball-head rod to swing freely within the hemispherical support until it aligns with the microphones. This allows for rapid adjustment of the distance and direction of each microphone from the center of the hemispherical support, ensuring that all microphones point towards the center. The distance between the microphone and the center can be determined as needed. However, this solution has a complex structure, low assembly efficiency, and the calibration accuracy relies on manual operation, resulting in limitations in the adjustment process. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a rotating hemispherical microphone stand. By driving the hemispherical truss support with a motor to move in a circular motion along a circular guide rail, the workload of testers operating a microphone stand with a large radius can be greatly reduced.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] This invention relates to a testing device for microphone stands with large radii. It employs a motor-driven truss-type stand that moves in a circular motion along a circular guide rail, equivalent to a multi-lobed arc structure stand, significantly reducing the operational complexity for testing personnel. Simultaneously, the circular guide rail is designed to open, minimizing the impact of the large-radius stand on passage.

[0007] This utility model provides a rotating hemispherical microphone stand, including a segmented circular guide rail, a semi-circular truss, and two bases;

[0008] The circular guide rail is equipped with a hinge at the assembly position to enable opening; the semi-circular truss is equipped with multiple microphone mounting clamps; two bases are respectively located at the bottom ends of the semi-circular truss and can rotate along the circular guide rail; each base is equipped with a motor drive assembly, a driven wheel assembly, a guide assembly, an anti-tipping assembly, a locking assembly, and a cable management panel.

[0009] Furthermore, the circular guide rail has a U-shaped cross-section with a crossbeam on the outside, and each section of the circular guide rail is fixedly installed by a support.

[0010] Furthermore, the semi-circular truss has a triangular cross-section. The semi-circular truss is formed by combining round tubes or other profiles.

[0011] Furthermore, the motor drive assembly includes: a motor, gears, and a drive wheel; the motor provides driving force, which drives the drive wheel to rotate through gear meshing or chain transmission. Furthermore, the driven wheel assembly is a freely steerable omnidirectional wheel structure.

[0012] Furthermore, the guide assembly includes a guide wheel that moves along the inner side of the circular guide rail, and a disc spring is mounted on the fixing screw of the guide assembly. This can accommodate unevenness in the circular guide rail caused by machining and installation errors.

[0013] Furthermore, the anti-tipping component includes a guide wheel that moves below the outer crossbeam of the circular guide rail.

[0014] Furthermore, the locking assembly includes an adjustable locking handle or threaded structure for fixing and locking the base to the circular guide rail.

[0015] Furthermore, the bottom of the openable section of the circular guide rail is equipped with rollers.

[0016] Furthermore, the cable management panel is equipped with a cable harness fixing clip. The cable management panel can gather all the microphone connection cables and lock the microphone connection cables in place through the cable harness fixing clip, preventing the cables from being pulled off during the circular motion of the bracket.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] (1) Adapting to large-radius testing requirements: The use of segmented circular guide rails and motor-driven semi-circular trusses simplifies the operation process of large-radius acoustic testing and reduces the complexity of manual operation. The circular guide rails achieve segmented opening through hinges. When closed, they form a complete test structure, and when open, they reduce the occupation of passage space, solving the problem of large-radius supports hindering site use.

[0019] (2) Precise control: The motor drive assembly, together with the driven universal wheels, enables the truss to rotate automatically along the guide rail, avoiding manual adjustment errors and improving calibration efficiency and test accuracy.

[0020] (3) The design of the U-shaped guide rail section and the universal wheel driven components is adapted to different site conditions, and it is convenient to expand or adjust the size of the bracket according to the test requirements. Attached Figure Description

[0021] Figure 1 This is an axonometric view of the rotating dome microphone stand in Example 1;

[0022] Figure 2 This is a partial enlarged view of the circular guide rail of the rotating dome microphone in Example 1;

[0023] Figure 3 This is a partial enlarged view of the bottom of the circular guide rail of the rotating hemispherical microphone in Example 1;

[0024] Figure 4 This is a partial enlarged view of the arc truss of the rotating hemispherical microphone stand in Example 1;

[0025] Figure 5 A partial enlargement of the rotating dome microphone stand base in Example 1. Figure 1 ;

[0026] Figure 6 A partial enlargement of the rotating dome microphone stand base in Example 1. Figure 2 ;

[0027] Figure 7 A partial enlargement of the rotating dome microphone stand base in Example 1. Figure 3 .

[0028] Reference numerals: 100, circular guide rail; 200, semi-circular truss; 300, base; 110, support; 120, hinge; 130, roller; 210, microphone mounting clamp; 220, round tube; 310, motor drive assembly; 320, driven wheel assembly; 330, guide assembly; 340, anti-tipping assembly; 350, locking assembly; 360, cable management panel; 311, gear; 312, drive wheel; 313, motor; 331, guide wheel; 332, disc spring; 361, wire harness fixing clamp. Detailed Implementation

[0029] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. Component models, material names, connection structures, control methods, algorithms, and other features not explicitly described in this technical solution are considered common technical features disclosed in the prior art.

[0030] Example 1

[0031] This embodiment provides a rotating dome microphone stand, such as Figure 1-7 As shown, it includes a segmented circular guide rail 100, a semi-circular truss 200, and two bases 300.

[0032] The circular guide rail 100 is provided with a hinge 120 at the assembly position to enable opening; the semi-circular truss 200 is provided with multiple microphone mounting clamps 210; two bases 300 are respectively provided at the bottom ends of the semi-circular truss 200 and can rotate along the circular guide rail 100; each base 300 is provided with a motor drive assembly 310, a driven wheel assembly 320, a guide assembly 330, an anti-tipping assembly 340, a locking assembly 350 and a cable management panel 360.

[0033] The circular guide rail 100 has a U-shaped cross-section and a crossbeam on the outside. Each section of the circular guide rail 100 is fixedly installed by a support 110. The bottom of the openable section of the circular guide rail 100 is equipped with a roller 130.

[0034] The semi-circular truss 200 has a triangular cross-section. The semi-circular truss 200 is constructed using a circular tube 220. The motor drive assembly 310 includes a motor 313, a gear 311, and a drive wheel 312; the motor 313 provides driving force, which drives the drive wheel 312 to rotate through the meshing transmission of the gear 311 or a chain transmission structure. The driven wheel assembly 320 is a freely steerable omnidirectional wheel structure. The guide assembly 330 includes a guide wheel 331 that moves along the inner side of the circular guide rail 100, and a disc spring 332 is mounted on the fixing screw of the guide assembly 330. This allows for adaptation to unevenness in the circular guide rail caused by processing and installation errors.

[0035] The anti-tipping component 340 includes a guide wheel that moves below the outer crossbeam of the circular guide rail 100. The locking component 350 includes an adjustable locking handle or threaded structure for fixing and locking the base 300 to the circular guide rail 100.

[0036] The cable management panel 360 is equipped with a cable harness fixing clip 361. The cable management panel 360 can gather all the microphone connection cables and lock the microphone connection cables through the cable harness fixing clip 361 to prevent the cable cables from being pulled off during the circular motion of the bracket.

[0037] Components not described in detail in this embodiment are all existing components that can be purchased through public channels.

[0038] The above description of the embodiments is provided to enable those skilled in the art to understand and use the utility model. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present utility model is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present utility model without departing from its scope should be within the protection scope of the present utility model.

Claims

1. A rotating dome microphone stand, characterized in that, It includes a segmented circular guide rail (100), a semi-circular truss (200), and two bases (300); The circular guide rail (100) is provided with a hinge (120) at the assembly position to enable opening; the semi-circular truss (200) is provided with multiple microphone mounting clamps (210); two bases (300) are respectively provided at the bottom ends of the semi-circular truss (200) and can rotate along the circular guide rail (100); each base (300) is provided with a motor drive assembly (310), a driven wheel assembly (320), a guide assembly (330), an anti-tipping assembly (340), a locking assembly (350), and a cable management panel (360).

2. The rotating dome microphone stand according to claim 1, characterized in that, The circular guide rail (100) has a U-shaped cross section and a crossbeam on the outside. Each section of the circular guide rail (100) is fixedly installed by a support (110).

3. A rotating dome microphone stand according to claim 1, characterized in that, The bottom of the openable section of the circular guide rail (100) is equipped with rollers (130).

4. A rotating dome microphone stand according to claim 1, characterized in that, The cross-section of the semi-circular truss (200) is triangular.

5. A rotating dome microphone stand according to claim 1, characterized in that, The motor drive assembly (310) includes: a motor (313), a gear (311), and a drive wheel (312); the motor (313) provides driving force and drives the drive wheel (312) to rotate through the meshing transmission of the gear (311) or the chain transmission structure.

6. A rotating dome microphone stand according to claim 1, characterized in that, The driven wheel assembly (320) is a swivel wheel structure that can freely turn.

7. A rotating dome microphone stand according to claim 1, characterized in that, The guide assembly (330) includes a guide wheel (331) that moves along the inner side of the circular guide rail (100), and a disc spring (332) is mounted on the fixing screw of the guide assembly (330).

8. A rotating dome microphone stand according to claim 1, characterized in that, The anti-rollover assembly (340) includes a guide wheel that moves below the outer crossbeam of the circular guide rail (100).

9. A rotating dome microphone stand according to claim 1, characterized in that, The locking assembly (350) includes an adjustable locking handle or threaded structure for securing the base (300) to the circular guide rail (100).

10. A rotating dome microphone stand according to claim 1, characterized in that, The cable management panel (360) is provided with a cable harness fixing clip (361).

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