CN114295390A - Measuring point positioning device for noise test of exhaust tail pipe - Google Patents
Measuring point positioning device for noise test of exhaust tail pipe Download PDFInfo
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- CN114295390A CN114295390A CN202111482020.3A CN202111482020A CN114295390A CN 114295390 A CN114295390 A CN 114295390A CN 202111482020 A CN202111482020 A CN 202111482020A CN 114295390 A CN114295390 A CN 114295390A
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Abstract
The invention discloses a positioning device for a noise test point of an exhaust tail pipe, which comprises a supporting plate, wherein an L-shaped plate is fixedly connected to the middle part of the outer wall of the bottom of the supporting plate, a fixing mechanism is arranged at one end of the L-shaped plate, a rectangular frame is fixedly connected to the outer wall of the top of the supporting plate, an installation block adaptive to the rectangular frame is arranged in the rectangular frame, a threaded hole is formed in the top end of the installation block, a vertical block is fixedly connected to the right side of the top end of the rectangular frame, a supporting block is fixedly connected to the upper end of the outer wall of one side of the vertical block, a first installation hole is formed in the top end of the supporting block, a bolt is connected to the inner wall of the first installation hole through threads, a moving rod is fixedly connected to the outer wall of one side of the installation block, the moving rod penetrates through the vertical block, and positioning holes distributed equidistantly are formed in the outer part of the moving rod. The acoustic sensor is arranged on the mounting block through the threaded hole, the distance between the mounting block and the exhaust pipe can be adjusted through the movement of the moving rod, and the flexibility is good.
Description
Technical Field
The invention relates to the technical field of test measuring point positioning measuring tools, in particular to a tail pipe noise test measuring point positioning device.
Background
Currently, automobile noise is one of the main pollution sources of urban environmental noise. Among the many noise sources of automobiles, exhaust noise accounts for a large proportion. Testing of automotive exhaust noise provides an important data reference for NVH quality design of vehicles. NVH is one of the concerns of various large vehicle manufacturing enterprises and component enterprises in the international automotive industry. Statistics show that 1/3 failure problem of the whole vehicle is related to NVH problem of the vehicle, and nearly 20% of research and development cost of each large company is consumed for solving the NVH problem of the vehicle. Therefore, accurate testing of exhaust noise is an important issue to be addressed by various automotive manufacturers.
In the measuring process, the acoustic sensor needs to be fixedly positioned, so that a positioning device is needed, and the distance between the acoustic sensor and the exhaust pipe cannot be adjusted after the existing positioning device is installed, so that certain limitation exists.
Disclosure of Invention
The invention aims to provide a measuring point positioning device for a tail pipe noise test, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the following technical scheme:
a measuring point positioning device for a noise test of an exhaust tail pipe comprises a supporting plate, wherein an L-shaped plate is fixedly connected to the middle of the outer wall of the bottom of the supporting plate, a fixing mechanism is arranged at one end of the L-shaped plate, a rectangular frame is fixedly connected to the top of the supporting plate, a mounting block adaptive to the rectangular frame is arranged in the rectangular frame, the mounting block is located at the outlet of the tail pipe, an acoustic sensor is mounted on the mounting block, a vertical block is fixedly connected to the top of one end of the rectangular frame, a supporting block is fixedly connected to the upper end of the outer wall of one side of the vertical block, a first mounting hole is formed in the top end of the supporting block, a bolt is connected to the inner wall of the first mounting hole through threads, the outer wall of one side of the mounting block is fixedly connected with one end of a moving rod, the other end of the moving rod penetrates through the vertical block, and positioning holes which are distributed equidistantly are formed in the surface of the moving rod, which is opposite to the bolt, the positioning hole is matched with the bolt.
As a further improvement scheme of the technical scheme: and a graduated scale is fixedly arranged on the outer wall of one side of the rectangular frame.
As a further improvement scheme of the technical scheme: the inner walls of two sides of the rectangular frame are fixedly connected with guide rods which are symmetrically distributed, and the guide rods penetrate through the mounting blocks.
As a further improvement scheme of the technical scheme: the fixing mechanism comprises a base fixedly connected to the L-shaped plate, connecting plates are fixedly connected to two sides of the top end of the base, two bidirectional lead screws are connected to the upper ends of the outer walls of the two opposite sides of the connecting plates through bearings, the outer portions of the bidirectional lead screws are connected with moving blocks which are symmetrically distributed through threads, and arc-shaped clamping plates are fixedly connected to the top ends of the moving blocks.
As a further improvement scheme of the technical scheme: the lower ends of the outer walls of the two opposite sides of the connecting plates are fixedly connected with limiting rods together, and the limiting rods penetrate through the moving blocks.
As a further improvement scheme of the technical scheme: and one outer wall of one side of one connecting plate is fixedly connected with a motor, and one end of an output shaft of the motor is fixedly connected with one end of the bidirectional screw rod.
As a further improvement scheme of the technical scheme: two the equal fixedly connected with of relative one side outer wall of splint presss from both sides tight pad, the material that presss from both sides tight pad is rubber.
Compared with the prior art, the invention has the beneficial effects that:
1. the measuring point positioning device for the tail pipe noise test is fixedly arranged on an exhaust pipe through a fixing mechanism, an acoustic sensor is arranged on an installation block through a threaded hole, the distance between the installation block and the exhaust pipe can be adjusted through the movement of a moving rod, the adjusted distance can be limited through a bolt and a positioning hole, and the flexibility is good;
2. this be used for tail pipe noise test measurement station positioner, through being provided with the motor, the motor drives two-way lead screw and rotates, and then can make the movable block relative or back of the body removal mutually, can adjust splint and press from both sides tightly and loosen the blast pipe, and is simple and convenient, adsorbs on the bumper more firmly reliable for current with the sucking disc.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings. The detailed description of the present invention is given in detail by the following examples and the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 is a schematic overall structure diagram of a positioning device for noise test points of a tail pipe according to the present invention.
Fig. 2 is an enlarged structural diagram of a position a of the positioning device for noise test points of the tail pipe provided by the invention.
Fig. 3 is a schematic structural view of a guide rod of the positioning device for noise test points of the tail pipe.
Fig. 4 is a schematic structural diagram of a fixing mechanism of the positioning device for noise test points of the tail pipe.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a base; 2. a motor; 3. a splint; 4. a rectangular frame; 5. mounting blocks; 6. an L-shaped plate; 7. a travel bar; 8. a support plate; 9. a graduated scale; 10. a vertical block; 11. a bolt; 12. positioning holes; 13. a guide bar; 14. a bidirectional screw rod; 15. a moving block; 16. a limiting rod.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention. The invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 4, in the embodiment of the present invention, an exhaust tail pipe noise test point positioning device includes a support plate 8, an L-shaped plate 6 is fixedly connected to a middle portion of an outer wall of a bottom portion of the support plate 8, a fixing mechanism is disposed at one end of the L-shaped plate 6 to fix the device on an exhaust pipe, a rectangular frame 4 is fixedly connected to an outer wall of a top portion of the support plate 8, a mounting block 5 adapted to the rectangular frame 4 is disposed inside the rectangular frame 4, the mounting block 5 is movable inside the rectangular frame 4, a threaded hole is disposed at a top end of the mounting block 5, a vertical block 10 is fixedly connected to a right side of the top end of the rectangular frame 4, a support block is fixedly connected to an upper end of an outer wall of one side of the vertical block 10, a first mounting hole is disposed at a top end of the support block, a bolt 11 is connected to an inner wall of the first mounting hole through a thread, a moving rod 7 is fixedly connected to an outer wall of one side of the mounting block 5, the moving rod 7 passes through the vertical block 10, the moving rod 7 is slidable along the vertical block 10, positioning holes 12 are disposed at equal intervals outside the moving rod 7, the positioning hole 12 is matched with the bolt 11, namely the bolt 11 can be just inserted into the positioning hole 12, the device is fixedly mounted on the exhaust pipe through a fixing mechanism, the acoustic sensor is mounted on the mounting block 5 through a threaded hole, the distance between the mounting block 5 and the exhaust pipe can be adjusted through the movement of the moving rod 7, the adjusted distance can be limited through the bolt 11 and the positioning hole 12, namely the bolt 11 is rotated to enable the bolt 11 to move downwards and be screwed into the positioning hole 12 to limit the bolt, and the flexibility is good.
In the invention, the outer wall of one side of the rectangular frame 4 is fixedly provided with the graduated scale 9, so that the distance can be accurately adjusted.
According to the invention, the inner walls of two sides of the rectangular frame 4 are fixedly connected with the guide rods 13 which are symmetrically distributed, the guide rods 13 penetrate through the mounting block 5, and the mounting block 5 can move along the guide rods 13, so that the stability of the guide rods 13 is improved.
According to the exhaust pipe clamping device, the fixing mechanism comprises a base 1 fixedly connected to an L-shaped plate 6, connecting plates are fixedly connected to two sides of the top end of the base 1, the upper ends of the outer walls of two opposite sides of the two connecting plates are jointly connected with a bidirectional screw rod 14 through bearings, the outer portion of the bidirectional screw rod 14 is connected with symmetrically distributed moving blocks 15 through threads, the top end of each moving block 15 is fixedly connected with an arc-shaped clamping plate 3, the bidirectional screw rod 14 is rotated to enable the moving blocks 15 to move relatively, and the two clamping plates 3 clamp and fix the exhaust pipe.
In the invention, the lower ends of the outer walls of the two opposite sides of the two connecting plates are fixedly connected with the limiting rods 16 together, and the limiting rods 16 penetrate through the moving block 15 to limit the moving block 15, so that the moving block 15 can only move along the limiting rods 16, thereby improving the stability of the moving block 15.
According to the invention, the outer wall of one side of one connecting plate is fixedly connected with the motor 2, one end of an output shaft of the motor 2 is fixedly connected with one end of the bidirectional screw rod 14, and the motor 2 can drive the bidirectional screw rod 14 to rotate so as to realize automatic clamping and loosening.
In the invention, the outer walls of the two opposite sides of the two clamping plates 3 are fixedly connected with clamping pads, and the clamping pads are made of rubber, so that the clamping stability is improved.
The working principle of the invention is as follows:
aim at the suitable position of blast pipe with two splint 3 earlier, starter motor 2, motor 2 can drive two-way lead screw 14 and rotate, two-way lead screw 14 acts on movable block 15 and makes its relative movement, let two splint 3 press from both sides tight fixed to the blast pipe, install acoustic sensor on installation piece 5 through the screw hole, the distance of installation piece 5 and blast pipe can be adjusted in the removal of carriage release lever 7, adjust the distance between acoustic sensor and the blast pipe promptly, can carry out spacingly to the distance of adjusting through bolt 11 and locating hole 12, carry out noise detection at last.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (7)
1. A measuring point positioning device for a tail pipe noise test comprises a supporting plate (8) and is characterized in that an L-shaped plate (6) is fixedly connected to the middle of the outer wall of the bottom of the supporting plate (8), a fixing mechanism is arranged at one end of the L-shaped plate (6), a rectangular frame (4) is fixedly connected to the top of the supporting plate (8), a mounting block (5) matched with the rectangular frame (4) is placed inside the rectangular frame (4), the mounting block (5) is located at an outlet of a tail pipe, an acoustic sensor is mounted on the mounting block (5), a vertical block (10) is fixedly connected to the top of one end of the rectangular frame (4), a supporting block is fixedly connected to the upper end of the outer wall of one side of the vertical block (10), a first mounting hole is formed in the top end of the supporting block, a bolt (11) is connected to the inner wall of the first mounting hole through threads, and the outer wall of one side of the mounting block (5) is fixedly connected to one end of a moving rod (7), the other end of the moving rod (7) penetrates through the vertical block (10), positioning holes (12) which are distributed at equal intervals are formed in the surface, opposite to the bolt (11), of the moving rod (7), and the positioning holes (12) are matched with the bolt (11).
2. The tail pipe noise test point positioning device according to claim 1, characterized in that a graduated scale (9) is fixedly arranged on the outer wall of one side of the rectangular frame (4).
3. The tail pipe noise test point positioning device according to claim 1, wherein two symmetrically distributed guide rods (13) are fixedly connected to the inner walls of two sides of the rectangular frame (4), and the guide rods (13) penetrate through the mounting block (5).
4. The device for positioning the measuring points of the tail pipe noise test according to claim 1, wherein the fixing mechanism comprises a base (1) fixedly connected to an L-shaped plate (6), connecting plates are fixedly connected to two sides of the top end of the base (1), the upper ends of the outer walls of two opposite sides of the two connecting plates are commonly connected with a bidirectional screw rod (14) through bearings, symmetrically distributed moving blocks (15) are connected to the outer portions of the bidirectional screw rod (14) through threads, and arc-shaped clamping plates (3) are fixedly connected to the top ends of the moving blocks (15).
5. The positioning device for the noise test measuring point of the tail pipe according to claim 4, wherein the lower ends of the outer walls of the two opposite sides of the connecting plates are fixedly connected with limiting rods (16), and the limiting rods (16) penetrate through the moving block (15).
6. The positioning device for the noise test measuring points of the tail pipe according to claim 5, wherein one end of one of the connecting plates is fixedly connected with a motor (2), and one end of an output shaft of the motor (2) is fixedly connected with one end of a bidirectional screw rod (14).
7. The tail pipe noise test station positioning device according to claim 4, wherein clamping pads are fixedly connected to the outer walls of the two clamping plates (3) on the opposite sides, and the clamping pads are made of rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111482020.3A CN114295390A (en) | 2021-12-06 | 2021-12-06 | Measuring point positioning device for noise test of exhaust tail pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111482020.3A CN114295390A (en) | 2021-12-06 | 2021-12-06 | Measuring point positioning device for noise test of exhaust tail pipe |
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| Publication Number | Publication Date |
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| CN114295390A true CN114295390A (en) | 2022-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111482020.3A Pending CN114295390A (en) | 2021-12-06 | 2021-12-06 | Measuring point positioning device for noise test of exhaust tail pipe |
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Citations (9)
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| CN204115752U (en) * | 2014-09-15 | 2015-01-21 | 浙江师范大学 | A kind of sensor stand for detecting automobile exhaust pipe NVH index |
| CN204141191U (en) * | 2014-09-15 | 2015-02-04 | 浙江师范大学 | A kind of sensor stand for automobile exhaust pipe noise measuring |
| CN105675127A (en) * | 2012-09-06 | 2016-06-15 | 浙江吉利汽车研究院有限公司杭州分公司 | Noise testing device and testing method for automobile exhaust tail pipe |
| KR101826853B1 (en) * | 2017-10-31 | 2018-02-08 | 한국건설기술연구원 | Dock for measuring noise |
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| CN208238927U (en) * | 2018-05-22 | 2018-12-14 | 襄阳达安汽车检测中心有限公司 | A kind of tailpipe noise fest measuring point positioning device |
| CN209875269U (en) * | 2019-04-26 | 2019-12-31 | 金华欧仑催化科技有限公司 | Automobile silencer with anti-drop noise testing device |
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2021
- 2021-12-06 CN CN202111482020.3A patent/CN114295390A/en active Pending
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| CN105675127A (en) * | 2012-09-06 | 2016-06-15 | 浙江吉利汽车研究院有限公司杭州分公司 | Noise testing device and testing method for automobile exhaust tail pipe |
| CN204115752U (en) * | 2014-09-15 | 2015-01-21 | 浙江师范大学 | A kind of sensor stand for detecting automobile exhaust pipe NVH index |
| CN204141191U (en) * | 2014-09-15 | 2015-02-04 | 浙江师范大学 | A kind of sensor stand for automobile exhaust pipe noise measuring |
| CN207019674U (en) * | 2017-05-19 | 2018-02-16 | 奇瑞汽车股份有限公司 | A kind of microphone positioner for automobile exhaust port noise testing |
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| KR101826853B1 (en) * | 2017-10-31 | 2018-02-08 | 한국건설기술연구원 | Dock for measuring noise |
| CN208238927U (en) * | 2018-05-22 | 2018-12-14 | 襄阳达安汽车检测中心有限公司 | A kind of tailpipe noise fest measuring point positioning device |
| CN209875269U (en) * | 2019-04-26 | 2019-12-31 | 金华欧仑催化科技有限公司 | Automobile silencer with anti-drop noise testing device |
| CN214703858U (en) * | 2021-03-18 | 2021-11-12 | 郭振 | Substation equipment running state detection device |
Non-Patent Citations (1)
| Title |
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