CN211925222U

CN211925222U - Hemisphere envelope method noise test support

Info

Publication number: CN211925222U
Application number: CN202020394213.8U
Authority: CN
Inventors: 徐睿枫; 孙博; 赵曦; 张谦; 李晓谦; 王灏瀚
Original assignee: Keyuan Environmental Technology Co Ltd Of Liaoning Environmental Protection Group
Current assignee: Keyuan Environmental Technology Co Ltd Of Liaoning Environmental Protection Group
Priority date: 2020-03-25
Filing date: 2020-03-25
Publication date: 2020-11-13
Anticipated expiration: 2030-03-25

Abstract

The utility model discloses a hemisphere envelope method noise test support, including the crossbeam, the arc beam is all fixedly installed at the left and right ends of crossbeam, crossbeam and arc beam all are equipped with the rectangle mouth, are equipped with the screw rod in the rectangle mouth, the bottom fixed mounting of screw rod has testing arrangement, fixedly install the solid fixed ring on the lateral wall of screw rod, the cover is equipped with the clamping ring on the lateral wall of screw rod, the inside wall of clamping ring is equipped with the locating part, the spiro union has the interior screw thread ring on the lateral wall of screw rod, the utility model discloses a through all being equipped with the rectangle mouth on crossbeam and the arc beam, be equipped with the screw rod in the rectangle mouth, the screw rod lateral wall is equipped with solid fixed ring, clamping ring and interior screw thread ring then through rotating the interior screw thread ring, makes the clamping ring compress tightly at crossbeam or arc beam, and then accomplishes the fixing of testing arrangement, even, reasonable in design, the practicality is stronger.

Description

Hemisphere envelope method noise test support

Technical Field

The utility model relates to an acoustic characteristic measures technical field, specifically is a hemisphere envelope method noise test support.

Background

The sound power test is widely used in the fields of industrial products such as automobiles, aerospace, household appliances and the like, carries out noise test and acoustic test on the industrial products, a common sound power test method is a free field method, when the noise of a certain sound source is tested, the sound source is eliminated in a room sound or semi-eliminated free field,

the existing detachable test support structure can change the position of a measuring device after deformation, so that errors are caused in subsequent sound wave measurement, and therefore the hemisphere envelope method noise test support is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a hemisphere envelope method noise test support to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a hemisphere envelope method noise test support, includes the crossbeam, the equal fixed mounting in both ends has the arc-shaped beam about the crossbeam, all be equipped with the rectangle mouth on crossbeam and the arc-shaped beam, be equipped with the screw rod in the rectangle mouth, the bottom fixed mounting of screw rod has testing arrangement, fixed mounting has solid fixed ring on the lateral wall of screw rod, the cover is equipped with the clamping ring on the lateral wall of screw rod, the inside wall of clamping ring is equipped with the locating part, the spiro union has the internal thread ring on the lateral wall of screw rod, the bottom laminating of internal thread ring is at the top of clamping ring, the bottom of clamping ring is laminated respectively in the upper and lower both sides of crossbeam.

Preferably, the locating part includes the slider, slider fixed mounting is on the inside wall of clamping ring, both ends all are equipped with the spout about the lateral wall of screw rod, slider slidable mounting is in the spout.

Preferably, the bottom fixed mounting of slider has the spring, the bottom fixed mounting of spring is on the diapire of spout.

Preferably, the bottom of the compression ring and the top of the fixing ring are both fixedly provided with a rubber layer.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a all be equipped with the rectangle mouth on crossbeam and the arc roof beam, be equipped with the screw rod in the rectangle mouth, be equipped with solid fixed ring on the screw rod lateral wall, clamping ring and internal thread ring, the inside wall of clamping ring is equipped with the locating part, when whole deformation, the change of screw rod position can be carried out, then through rotating the internal thread ring, make the clamping ring compress tightly at crossbeam or arc roof beam, and then accomplish testing arrangement's fixed, even holistic change can not lead to testing arrangement's position change yet, avoid causing test error, keep subsequent sound wave measurement accuracy, and reasonable design, therefore, the practicality is stronger.

Drawings

Fig. 1 is an overall schematic view of the present invention.

Fig. 2 is a schematic view of the present invention at a.

In the figure: 1. the device comprises a cross beam, 2, an arc-shaped beam, 3, a rectangular opening, 4, a screw rod, 5, a testing device, 6, a fixing ring, 7, a pressing ring, 8, a limiting part, 9, an internal thread ring, 10, a sliding block, 11, a sliding groove, 12, a spring, 13 and a rubber layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 and fig. 2, the present invention provides a technical solution: a semi-sphere envelope method noise test support comprises a cross beam 1, wherein arc-shaped beams 2 are fixedly arranged at the left end and the right end of the cross beam 1, rectangular openings 3 are formed in the cross beam 1 and the arc-shaped beams 2, a screw rod 4 is arranged in each rectangular opening 3, the screw rod 4 can move left and right in each rectangular opening 3, further conveniently changing the position of the testing device 5, the bottom end of the screw rod 4 is fixedly provided with the testing device 5, the side wall of the screw rod 4 is fixedly provided with the fixing ring 6, the side wall of the screw rod 4 is sleeved with the pressing ring 7, the inner side wall of the pressing ring 7 is provided with the limiting part 8, the arrangement of the limiting part 8 can avoid the rotation of the pressing ring 7 and the direct rotation of the top of the pressing beam 1, wear and tear are caused to crossbeam 1, arc roof beam 2, and the spiro union has internal thread ring 9 on the lateral wall of screw rod 4, and the laminating of the bottom of internal thread ring 9 is at the top of clamping ring 7, and the laminating is respectively in crossbeam 1's upper and lower both sides at the bottom of clamping ring 7 and the top of solid fixed ring 6.

Specifically, the limiting part 8 includes a slider 10, the slider 10 is fixedly mounted on the inner side wall of the pressing ring 7, the left and right ends of the side wall of the screw rod 4 are respectively provided with a sliding groove 11, the slider 10 is slidably mounted in the sliding groove 11, the slider 10 is in a rectangular parallelepiped shape, and the front side and the rear side of the slider 10 respectively slide relative to the front side wall and the rear side wall of the sliding groove 11.

Specifically, the bottom fixed mounting of slider 10 has spring 12, and the bottom fixed mounting of spring 12 is on the diapire of spout 11, and spring 12 shown in fig. 2 is in compression state, can make clamping ring 7 upward movement when interior thread ring 9 no longer compresses tightly clamping ring 7, no longer contacts crossbeam 1, is convenient for remove screw rod 4 from side to side.

Specifically, the rubber layer 13 is fixedly mounted at the bottom of the pressing ring 7 and the top of the fixing ring 6, and the rubber layer 13 is arranged to increase the fixing effect of the pressing ring 7 and the fixing ring 6 on the beam 1.

The working principle is as follows: when removing testing arrangement 5, rotate internal thread ring 9, internal thread ring 9 no longer compresses tightly clamping ring 7, through the resilience force of spring 12, makes clamping ring 7 upward movement, no longer contacts crossbeam 1, then removes screw rod 4, and then changes testing arrangement 5's position, removes the back, rotates internal thread ring 9, makes internal thread ring 9 compress tightly clamping ring 7 again, fixes testing arrangement 5.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a hemisphere envelope method noise test support which characterized in that: including crossbeam (1), the equal fixed mounting in both ends has arc roof beam (2) about crossbeam (1), all be equipped with rectangle mouth (3) on crossbeam (1) and arc roof beam (2), be equipped with screw rod (4) in rectangle mouth (3), the bottom fixed mounting of screw rod (4) has testing arrangement (5), fixed mounting has solid fixed ring (6) on the lateral wall of screw rod (4), the cover is equipped with clamping ring (7) on the lateral wall of screw rod (4), the inside wall of clamping ring (7) is equipped with locating part (8), the spiro union has interior screw thread ring (9) on the lateral wall of screw rod (4), the bottom laminating of interior screw thread ring (9) is at the top of clamping ring (7), the bottom of clamping ring (7) is laminated respectively in the upper and lower both sides of crossbeam (1) with the top of solid fixed ring (6).

2. The hemispherical envelope method noise test stand of claim 1, wherein: locating part (8) include slider (10), slider (10) fixed mounting is on the inside wall of clamping ring (7), both ends all are equipped with spout (11) about the lateral wall of screw rod (4), slider (10) slidable mounting is in spout (11).

3. The hemispherical envelope method noise test stand of claim 2, wherein: the bottom fixed mounting of slider (10) has spring (12), the bottom fixed mounting of spring (12) is on the diapire of spout (11).

4. The hemispherical envelope method noise test stand of claim 1, wherein: the bottom of the compression ring (7) and the top of the fixing ring (6) are fixedly provided with rubber layers (13).