Testing tool for sound insulation performance of superfine glass fiber material

Abstract

The utility model discloses a tool for testing the sound insulation performance of a superfine glass fiber material, and relates to the technical field of glass fiber testing. The testing tool for the sound insulation performance of the superfine glass fiber material comprises a rectangular channel, a limiting mechanism and an abutting mechanism, a rectangular groove is formed in the front side of the rectangular channel, a fixing frame is clamped in the rectangular groove, a mounting groove is formed in the front side of the fixing frame, a movable plate is clamped in the mounting groove, and the abutting mechanism is arranged on the outer surface of the front side of the rectangular channel. The abutting mechanism comprises a movable rod, a connecting piece and a connecting rod, and at least two sets of grooves are formed in the front side of the rectangular channel. According to the testing tool for the sound insulation performance of the superfine glass fiber material, through cooperation of the fixed frame, the movable plate, the abutting mechanism and the limiting mechanism, the fixed frame with the mounting grooves of different sizes can be replaced on the tool, so that the movable plates of different specifications can be replaced for testing, the application range is wider, and the practicability of the tool is improved.

Description

Technical Field

[0001] This utility model relates to the field of glass fiber testing technology, and in particular to a testing fixture for the sound insulation performance of ultrafine glass fiber materials. Background Technology

[0002] Chinese patent document CN216771607U discloses a testing fixture for testing the sound insulation performance of sound-insulating and heat-insulating glass fiber cotton. The fixture includes a fixed frame, the outer side of which is connected to the walls of an anechoic chamber and a reverberation chamber. A connecting channel is provided in the middle of the fixed frame, connecting the anechoic chamber and the reverberation chamber. A movable plate is embedded in the connecting channel at one end near the reverberation chamber. The movable plate is fixed to the fixed frame by quick clamps. The movable plate sequentially includes a sealing element, a first aluminum plate layer, a first lamination frame, a first wire mesh, a sample layer, a second wire mesh, a second lamination frame, and a second aluminum plate layer. The sealing element is located near the reverberation chamber side, and the second aluminum plate layer is located near the anechoic chamber side. This fixture can simulate the actual sound insulation performance of sound-insulating and heat-insulating glass fiber cotton during application, while reducing the influence of lateral sound transmission from traditional components on the test results. It closely approximates actual usage conditions, and the test data can better reflect the actual effect.

[0003] However, the fixed frame of the above-mentioned fixture can only be used to install movable plates of fixed size and specifications, that is, it can only test samples of glass fiber materials with a fixed area. This results in a single testing method of the fixture, which cannot meet different needs. Therefore, we propose a testing fixture for the sound insulation performance of ultrafine glass fiber materials. Utility Model Content

[0004] The purpose of this invention is to provide a testing fixture for the sound insulation performance of ultrafine glass fiber materials, which can solve the problem of existing fixtures testing only a single object.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a testing fixture for the sound insulation performance of ultrafine glass fiber materials, comprising:

[0006] A rectangular channel with a rectangular groove on its front side, a fixed frame is snapped into the rectangular groove, and a mounting groove is opened on the front side of the fixed frame, a movable plate is snapped into the mounting groove.

[0007] A limiting mechanism is provided on the front outer surface of the fixed frame. The limiting mechanism is used to assist the moving plate in the installation groove for assembly and disassembly.

[0008] The abutting mechanism is located on the front outer surface of the rectangular channel. The abutting mechanism includes a movable rod, a connecting piece, and a connecting rod. At least two sets of grooves are provided on the front side of the rectangular channel. A set of movable rods is inserted into each set of grooves. A set of connecting pieces is fixedly installed on one end of each set of movable rods on the front side of the rectangular channel. A set of connecting rods is fixedly installed on the rear outer surface of each set of connecting pieces.

[0009] Preferably, the abutment mechanism further includes springs and anti-slip pads. One end of each set of connecting rods is fixedly installed with a set of anti-slip pads. Each set of anti-slip pads abuts against the front outer surface of the fixed frame. Each set of movable rods is fitted with a set of springs. One end of each set of springs is fixedly connected to the corresponding connecting piece. The other end of each set of springs is fixedly connected to the front outer surface of the rectangular channel. Each set of springs is in a stretched state.

[0010] Preferably, the limiting mechanism includes a limiting plate, a rotating handle, and a magnet. A set of limiting plates is rotatably mounted on the front outer surface of the fixed frame. A set of rotating handles is fixedly mounted on the front outer surface of each set of limiting plates. A set of circular grooves is opened on the rear outer surface of each set of limiting plates. A set of magnets is fixedly mounted in each set of circular grooves. Each set of magnets is in contact with the front outer surface of the movable plate.

[0011] Preferably, the front outer surface of the fixing frame has two sets of finger grooves communicating with the mounting groove, and the front outer surface of the fixing frame has two sets of handle grooves.

[0012] Preferably, two sets of flanges are fixedly installed on the outer surface of the rectangular channel.

[0013] Preferably, a set of sealing gaskets is fixedly installed on the opposite sides of both sets of flanges.

[0014] Preferably, the interior of the fixed frame is filled with sound-insulating material, and the movable plate is composed of a sealing element, a metal plate layer, a pressure frame, a wire mesh, and a sample layer of ultra-fine glass fiber material.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] (1) The test fixture for the sound insulation performance of the ultrafine glass fiber material, through the cooperation of the fixed frame, the movable plate, the contact mechanism and the limiting mechanism, can replace the fixed frame with different size mounting slots on the fixture so as to replace the movable plate of different specifications for testing. It has a wider range of applications and solves the problem that the fixed frame of some existing fixtures can only be used for the installation of movable plates of fixed size specifications, that is, it can only test samples of glass fiber material with a fixed area, resulting in a single testing method of the fixture and failing to meet different needs. This improves the practicality of the fixture.

[0017] (2) The test fixture for the sound insulation performance of the ultra-fine glass fiber material, through the cooperation of the flange and the sealing gasket, enables the fixture to be compatible with the docking requirements of different sound source boxes, which improves the flexibility of the fixture. At the same time, with the help of the finger groove and handle groove, the fixed frame and the moving plate can be easily disassembled, ensuring the effectiveness of the fixture and facilitating its promotion and use. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0019] Figure 1 This is a frontal perspective view of the present invention;

[0020] Figure 2 for Figure 1 Enlarged view of the structure at point A in the middle;

[0021] Figure 3 for Figure 1 Enlarged view of the structure at point B in the middle.

[0022] Reference numerals: 1. Rectangular channel; 2. Fixed frame; 3. Moving plate; 4. Abutting mechanism; 41. Movable rod; 42. Connecting piece; 43. Spring; 44. Connecting rod; 45. Anti-slip pad; 5. Limiting mechanism; 51. Limiting piece; 52. Rotating handle; 53. Magnet; 6. Finger groove; 7. Handle groove; 8. Flange; 9. Sealing gasket. Detailed Implementation

[0023] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0024] Please see Figure 1-3 This utility model provides a technical solution: a testing fixture for the sound insulation performance of ultrafine glass fiber material, including a rectangular channel 1, a limiting mechanism 5, and an abutting mechanism 4. A rectangular groove is formed on the front side of the rectangular channel 1, and a fixed frame 2 is engaged within the rectangular groove. An installation groove is formed on the front side of the fixed frame 2, and a movable plate 3 is engaged within the installation groove. The limiting mechanism 5 is located on the outer front surface of the fixed frame 2 and assists in the assembly and disassembly of the movable plate 3 within the installation groove. Two sets of finger grooves 6 communicating with the installation groove are formed on the outer front surface of the fixed frame 2, and two sets of handle grooves 7 are formed on the outer front surface of the fixed frame 2. Two sets of flanges 8 are fixedly installed on the outer surface of channel 1. A set of sealing gaskets 9 are fixedly installed on the opposite side of the two sets of flanges 8. The interior of the fixed frame 2 is filled with sound insulation material. The movable plate 3 is composed of sealing elements, metal plate layer, pressure frame, wire mesh and ultra-fine glass fiber material sample layer. Through the cooperation of flanges 8 and sealing gaskets 9, the tooling can be compatible with the docking requirements of different sound source boxes, improving the flexibility of the tooling. At the same time, with the help of finger grooves 6 and handle grooves 7, the fixed frame 2 and movable plate 3 can be easily disassembled, ensuring the use effect of the tooling and facilitating the promotion and use of the tooling.

[0025] The abutting mechanism 4 is disposed on the front outer surface of the rectangular channel 1. The abutting mechanism 4 includes a movable rod 41, a connecting piece 42 and a connecting rod 44. At least two sets of grooves are opened on the front side of the rectangular channel 1. A set of movable rods 41 is inserted into each set of grooves. A set of connecting pieces 42 is fixedly installed on one end of each set of movable rods 41 on the front side of the rectangular channel 1. A set of connecting rods 44 is fixedly installed on the rear outer surface of each set of connecting pieces 42.

[0026] The contact mechanism 4 also includes a spring 43 and an anti-slip pad 45. One end of each set of connecting rods 44 is fixedly installed with an anti-slip pad 45. Each set of anti-slip pads 45 abuts against the front outer surface of the fixed frame 2. Each set of movable rods 41 is fitted with a spring 43. One end of each set of springs 43 is fixedly connected to the corresponding connecting piece 42. The other end of each set of springs 43 is fixedly connected to the front outer surface of the rectangular channel 1. Each set of springs 43 is in a stretched state.

[0027] The limiting mechanism 5 includes a limiting plate 51, a rotating handle 52, and a magnet 53. A set of limiting plates 51 are rotatably mounted on the front outer surface of the fixed frame 2. A set of rotating handles 52 are fixedly mounted on the front outer surface of each set of limiting plates 51. A set of circular grooves are opened on the rear outer surface of each set of limiting plates 51. A set of magnets 53 are fixedly mounted in each set of circular grooves. Each set of magnets 53 is in contact with the front outer surface of the movable plate 3. Through the cooperation of the fixed frame 2, the movable plate 3, the abutting mechanism 4, and the limiting mechanism 5, the fixed frame 2 with different sized mounting grooves can be replaced on the tooling to replace the movable plate 3 of different specifications for testing, thus expanding the scope of application and improving the practicality of the tooling.

[0028] Working principle: Rectangular channel 1 is connected to the anechoic chamber and reverberation chamber via flange 8, making the two chambers interconnected. The anechoic chamber generates a controllable sound source, and the sound waves enter the reverberation chamber through rectangular channel 1. The ultra-fine glass fiber material in the movable plate 3 blocks the sound propagation. By comparing the input sound pressure level of the anechoic chamber with the received sound pressure level of the reverberation chamber, the sound insulation of the material is calculated. When different sizes of movable plates 3 need to be installed, pull the connecting piece 42 to pull it outward through the movable rod 41 and stretch the spring 43. Then rotate the connecting piece 42 so that the anti-slip pad 45 no longer presses against the fixed frame 2, and the fixed frame 2 can be removed and replaced with a fixed frame 2 with a corresponding size installation slot. When disassembling and assembling the movable plate 3, rotate the handle 52 to drive the limit piece 51 to rotate so that the magnet 53 no longer presses against the movable plate 3.

[0029] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A testing fixture for the sound insulation performance of ultrafine glass fiber materials, characterized in that, include: A rectangular channel (1) has a rectangular groove on its front side, and a fixed frame (2) is snapped into the rectangular groove. A mounting groove is opened on the front side of the fixed frame (2), and a movable plate (3) is snapped into the mounting groove. The limiting mechanism (5) is located on the front outer surface of the fixed frame (2). The limiting mechanism (5) is used to assist the moving plate (3) in being disassembled and assembled in the mounting groove. The abutting mechanism (4) is located on the front outer surface of the rectangular channel (1). The abutting mechanism (4) includes a movable rod (41), a connecting piece (42) and a connecting rod (44). At least two sets of grooves are provided on the front side of the rectangular channel (1). A set of movable rods (41) is inserted into each set of grooves. A set of connecting pieces (42) is fixedly installed on the front side of each set of movable rods (41). A set of connecting rods (44) is fixedly installed on the rear outer surface of each set of connecting pieces (42).

2. The testing fixture for the sound insulation performance of ultrafine glass fiber material according to claim 1, characterized in that: The contact mechanism (4) also includes a spring (43) and an anti-slip pad (45). One end of each connecting rod (44) is fixedly installed with an anti-slip pad (45). Each anti-slip pad (45) abuts against the front outer surface of the fixed frame (2). Each movable rod (41) is fitted with a spring (43). One end of each spring (43) is fixedly connected to the corresponding connecting piece (42). The other end of each spring (43) is fixedly connected to the front outer surface of the rectangular channel (1). Each spring (43) is in a stretched state.

3. The testing fixture for the sound insulation performance of ultrafine glass fiber material according to claim 2, characterized in that: The limiting mechanism (5) includes a limiting plate (51), a rotating handle (52) and a magnet (53). A set of limiting plates (51) are rotatably installed on the front outer surface of the fixed frame (2). A set of rotating handles (52) are fixedly installed on the front outer surface of each set of limiting plates (51). A set of circular grooves are opened on the rear outer surface of each set of limiting plates (51). A set of magnets (53) are fixedly installed in each set of circular grooves. Each set of magnets (53) is attached to and attracted to the front outer surface of the moving plate (3).

4. The testing fixture for the sound insulation performance of ultrafine glass fiber material according to claim 3, characterized in that: The front outer surface of the fixed frame (2) is provided with two sets of finger grooves (6) that communicate with the mounting groove, and the front outer surface of the fixed frame (2) is provided with two sets of handle grooves (7).

5. The testing fixture for the sound insulation performance of ultrafine glass fiber material according to claim 4, characterized in that: Two sets of flanges (8) are fixedly installed on the outer surface of the rectangular channel (1).

6. The testing fixture for the sound insulation performance of ultrafine glass fiber material according to claim 5, characterized in that: A set of sealing gaskets (9) is fixedly installed on the opposite side of the two sets of flanges (8).

7. The testing fixture for the sound insulation performance of ultrafine glass fiber material according to claim 6, characterized in that: The interior of the fixed frame (2) is filled with sound-insulating material.

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