CN210510782U

CN210510782U - Array support

Info

Publication number: CN210510782U
Application number: CN201920242448.2U
Authority: CN
Inventors: 刘振宇; 李福洋; 周祎; 张二亮
Original assignee: Zhengzhou University
Current assignee: Zhengzhou University
Priority date: 2019-02-26
Filing date: 2019-02-26
Publication date: 2020-05-12
Anticipated expiration: 2029-02-26

Abstract

The utility model relates to a belong to sound test technical field, concretely relates to support structure of near field acoustic holography test among noise test environment. The support is integrally divided into five parts, namely an array panel, a transverse support, a vertical support, a horizontal plate and a flange connecting piece. The microphone sensors can be placed in the supporting holes distributed on the array panel and can be used for measuring signals. The horizontal support and the vertical support are connected with the horizontal plate and the flange connecting piece to support and fix the array panel. The whole design can be finally fixed on an adjustable platform such as a tripod, and finally the microphone sensor is ensured to be fixed in position, adjustable in height and horizontal to the ground after being installed. The support is integrally aligned with a sound source to collect signals, and the collected signals are used for reconstructing sound field characteristics. The design structure is simple, the precision is high, and the actual test effect is good.

Description

Array support

Technical Field

The invention belongs to the technical field of mechanical vibration noise test. In particular to a support structure for near-field acoustic holographic test of mechanical structure test environments such as an engine or a gear box.

Background

Planar near-field acoustic holography (NAH) is a technique based on fourier-acoustic imaging of recorded holographic data in close proximity to the surface of an object under measurement. And identifying information such as the position of a noise source through testing and reconstruction of a sound field, and processing acoustic experimental data.

The planar near-field acoustic holography measurement needs a certain number and positions of microphone sensors to form an array surface. The fixation of the microphone sensor position requires a suitable support. The size and shape of the microphone array face are determined according to the experimental equipment, objects and environment. The specifications of the commonly purchased support are fixed, the flexibility is poor, and the requirements of some specific scenes on the support cannot be met.

Disclosure of Invention

1. The invention aims to provide an array support. The microphone sensor testing device is simple and firm in structure, easy to disassemble and transport, and capable of placing or disassembling microphone sensors in different positions and quantities according to different practical application conditions to form different signal testing schemes. The overall accuracy of the support is high, and the design can be matched with other instruments such as a level meter to meet specific testing environments.

2. In order to achieve the purpose, the invention adopts the following technical scheme:

the array support is including bearing array panel, horizontal support, vertical braces, horizontal plate and the flange joint spare of microphone sensor, and the array panel is circular, and its central shape is hollow out construction, mainly has thick skeleton and thin skeleton to constitute, and the distribution of holding hole follows random evenly distributed, and every holding hole is the through-hole that the size is the same and the center of array panel is opened has connecting hole and screw.

The front part of the transverse support is provided with a connecting column which can be connected with a connecting hole of the array panel for supporting connection, the connecting column is arranged at the front end of a boss, the boss is provided with a screw hole, the middle part of the transverse support is provided with an upper plane and a lower plane, the upper plane is provided with two groups of holes which are linearly distributed, and the two groups of holes are respectively a first group of screw holes which are communicated with the lower plane and a connecting hole, and a second group of screw holes which are connected with the horizontal plate.

The vertical support is provided with an upper boss structure and a lower boss structure which are respectively used for connecting the transverse support and the flange connecting piece.

The horizontal plate is T-shaped, the upper surface and the lower surface of the horizontal plate are horizontal, and the front section of the horizontal plate is provided with a screw hole.

The flange connecting piece has upper boss structure and lower boss structure, and upper boss structure goes up to open has screw and the spliced pole that distributes, and the center of lower boss structure has the screw hole that is used for the connection.

Drawings

Further details, features and advantages of the inventive subject matter are disclosed in the dependent claims and the following description of the respective figures, which, in conjunction with the figures, show preferred embodiments in an exemplary manner of the subject matter according to the invention. In the drawings, FIG. 1 is a schematic view of the structure of an array support; FIG. 2 is a left side view of FIG. 1; FIG. 3 is a schematic structural diagram of an array panel; FIG. 4 is a schematic view of a portion of the structure of FIG. 3; FIG. 5 is a schematic view of a portion of the structure of FIG. 3; FIG. 6 is a schematic structural view of the lateral support; FIG. 7 is a left side view of FIG. 6; FIG. 8 is a top view of FIG. 6; FIG. 9 is a schematic view of the structure of the vertical support; FIG. 10 is a left side view of FIG. 9; FIG. 11 is a top view of FIG. 9; FIG. 12 is a schematic view of the structure of a horizontal plate; FIG. 13 is a schematic view of a flange connection; fig. 14 is a top view of fig. 13.

Detailed Description

The description is made according to the attached drawings, as shown in fig. 1 and 2. An array support comprises an array panel 10, a transverse support 20, a vertical support 30, a horizontal plate 40 and a flange connector 50.

As shown in fig. 3 and 4, the array panel 10 is a circular surface, and five thick frameworks 11 are uniformly distributed therein. The thick frame 11 is connected with the uniformly distributed support holes 12 through the thin frame 13, and the support holes 12 are through holes and are vertical to the surface of the array panel 10. A hollow structure is formed between the thick and thin frameworks, the hollow structure and the supporting holes 12 can stably support the inserted microphone sensor and keep the microphone sensor fixed, the precision of the point signal can be ensured when a measurement experiment is carried out, and an irrelevant wave directly passes through the hollow part of the array panel 10, so that the interference of the non-measurement point wave is reduced as much as possible.

As shown in fig. 5, the array panel 10 is provided with a connecting hole 14 and a screw hole 15 in the middle for connecting with a connecting post 211 on a boss 21 at the front end of the lateral support 20 and fixedly connecting with a screw hole 212, respectively.

As shown in fig. 6 to 8, the front section of the transverse support 20 has a boss 21 connected with the array panel 10, the boss 21 has a connection post 211 and a distribution screw hole 212, and the connection post has a supporting and positioning function for the array panel 10, so as to prevent the rotation or sliding of the array panel, and the two parts are kept in a mutually perpendicular state after being connected. The middle section of the transverse support 20 is provided with an upper plane 22 and a lower plane 23, the processing planeness of the two planes is very high, and the two planes are ensured to be perpendicular to the vertical support 30 after being connected with the vertical support. The upper plane 22 has two sets of through holes arranged in the same straight line. The first group of through holes are connecting holes 222 and screw holes 221, which are communicated with the lower plane 23 and can be connected with the vertical support 30 through the flat lower plane 23 for fixing and supporting and positioning. The second set of screw holes 223 are used to connect with the horizontal plate 40.

As shown in fig. 9 to 11, the vertical support 30 is a column, and an upper boss structure 31 and a lower boss structure 32 are formed at both ends thereof. The upper boss structure 31 has a screw hole 311 capable of being fixedly connected with the transverse support 20 and a connecting column 312 for assembling and fixing. The lower boss structure 32 is formed with a screw hole 321 and a connection hole 322 to be connected to the flange connection member 50.

As shown in fig. 12, the horizontal plate 40 has a T-shape, and a screw hole 41 for connecting with the lateral support 20 is formed at the front end thereof. The flatness of the upper and lower surfaces of the horizontal plate 40 is high, and the horizontal plate can be matched and connected with the upper surface of the transverse support 20 through bolts, so that the upper surface of the horizontal plate 40 and the upper surface of the transverse support 20 can be ensured to be parallel. By placing a measuring device such as a level gauge on the horizontal plate 40 and adjusting, it is indirectly detected whether the array panel 10 is vertical to the ground and the position of the microphone sensor is horizontal.

As shown in fig. 13 and 14, the flange connector 50 is composed of an upper boss structure 51 and a lower boss structure 52, the upper boss structure 51 is provided with screw holes 511 and connecting columns 512, and the upper boss structure can be fixedly connected with the vertical supports 30 through bolts. The center of the lower boss 52 is provided with a threaded hole 521, which can be externally connected with an adjusting device such as a tripod.

Claims

1. An array support, comprising: the support is including bearing array panel (10) of microphone sensor, horizontal support (20), vertical braces (30), horizontal plate (40) and flange joint spare (50), array panel (10) are circular, its central shape is hollow out construction, mainly there are thick skeleton (11) and thin skeleton (13) to constitute, the distribution of support hole (12) is followed random evenly distributed, every support hole (12) are the through-hole that the size is the same and the center of array panel (10) is opened there are connecting hole (14) and screw (15).

2. The array support according to claim 1, characterized in that the front of the lateral support (20) is provided with a connecting column (211) which can be connected with the connecting hole (14) of the array panel (10) for supporting connection, the connecting column (211) is arranged at the front end of the boss (21), the boss (21) is provided with a screw hole (212), the middle of the lateral support (20) is provided with an upper plane (22) and a lower plane (23), the upper plane (22) is provided with two groups of linearly distributed holes, namely a first group of screw holes (221) and connecting holes (222) which are communicated with the lower plane (23) and a second group of screw holes (223) which are connected with the horizontal plate (40).

3. The array holder as claimed in claim 1 or claim, characterised in that the vertical supports (30) have upper (31) and lower (32) boss formations for connecting the lateral supports (20) and the flange connectors (50), respectively.

4. The array holder as claimed in claim 1, wherein the horizontal plate (40) is T-shaped and has horizontal upper and lower surfaces, and a front section having a screw hole (41).

5. The array support according to claim 1, wherein the flange connector (50) has an upper convex structure (51) and a lower convex structure (52), the upper convex structure (51) is provided with screw holes (511) and connecting posts (512) distributed, and the center of the lower convex structure (52) is provided with a threaded hole (521) for connection.