Noise testing device for automobile exhaust tail pipe

Abstract

The utility model discloses a noise testing device for an automobile exhaust tail pipe, which relates to the technical field of automobile exhaust detection and comprises a detection handle, a fixing unit is arranged on the outer surface of the detection handle, and a protective cover is arranged at one end of the detection handle. According to the device, through cooperation of the detection handle, the detection head, the adjusting block, the protective cover, the sleeve and the clamping groove, the detection head can be protected in the detection process, the influence of dust on the detection result is prevented, the protective cover is also convenient to disassemble, assemble and clean, the protective effect is maintained, and the detection efficiency is improved. And through the cooperation of the adjusting screw rod, the connecting piece, the movable ring, the second connecting rod, the first connecting rod and the supporting block, the device can be conveniently connected and fixed with the automobile tail pipe during detection, and the device is small in size, convenient and flexible to move and rapid to disassemble and assemble, so that the detection flexibility is improved, the detection time is saved, and the detection efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive exhaust testing technology, and in particular to an automotive exhaust tailpipe noise testing device. Background Technology

[0002] A car's exhaust pipe emits the exhaust gases produced by the engine, which generate noise. If this noise exceeds a certain limit, it can affect people's living environment and cause noise pollution. Therefore, it is necessary to conduct regular noise tests on car exhaust pipes to ensure that the exhaust noise is within a safe range. For example, a Chinese patent discloses a car exhaust pipe noise testing device (publication number CN220206841U). Although this testing device is unaffected by tailpipe vibration during the testing process, it is large in size, inconvenient to move and install at any time, affecting the testing efficiency of the testing personnel and increasing the difficulty of testing. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides a vehicle exhaust tailpipe noise testing device, which solves the problems mentioned in the background section.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: a vehicle exhaust tailpipe noise testing device, including a testing handle, a fixing unit is provided on the outer surface of the testing handle, and a protective cover is provided at one end of the testing handle;

[0005] The fixing unit includes a fixing ring, and three first connecting rods are connected in a ring shape on the outer surface of the fixing ring. One end of each of the three first connecting rods is connected to a support block, and one side of each of the three support blocks is connected to a second connecting rod. One end of each of the second connecting rods is connected to a receiving block.

[0006] As a further technical solution of this utility model, a detection head is provided at one end of the detection handle, a sound sensor is provided inside the detection head, two connecting blocks are connected in a ring on the outer surface of one end of the detection handle, two rotating shafts are provided on the inner sidewalls of the two connecting blocks, and a sleeve is provided at one end of the protective cover.

[0007] As a further technical solution of this utility model, the inner walls of the three receiving blocks are connected to movable rings, one end face of the detection handle is connected to an adjusting screw, the inner walls of the movable rings are connected to two guide blocks in a ring shape, and the inner walls of the two guide blocks are connected to connectors.

[0008] As a further technical solution of this utility model, the connector is disposed on the outer surface of the adjusting screw, and a movable groove is provided inside the detection handle at the corresponding position of the sliding path of the connector. A sliding groove is provided on the outer surface of the detection handle at the corresponding position of the sliding path of the two guide blocks, and the sliding groove is connected to the movable groove.

[0009] As a further technical solution of this utility model, an adjusting block is connected between the two rotating shafts, and torsion springs are connected to the outer surface of the rotating shafts and on both sides of the connecting block. A locking block is provided at one end of the adjusting block, and two mounting grooves are formed in an annular shape at the corresponding position of the outer surface of one end of the detection handle and the sliding path of the sleeve. The outer surface of the sleeve and the two locking blocks are respectively provided with locking grooves.

[0010] As a further technical solution of this utility model, the inner diameter of the movable groove is adapted to the sliding path of the connector, the inner diameter of the sliding groove is adapted to the sliding path of the guide block, the outer diameter of the detection handle is adapted to the sliding path of the movable ring, and the movable ring is connected to the fixed ring through the second connecting rod, the support block, and the first connecting rod.

[0011] As a further technical solution of this utility model, the inner diameter of the connecting block is adapted to the outer diameter of the adjusting block, the inner diameter of the sleeve is adapted to the outer diameter of the detection handle, the inner diameter of the mounting groove is adapted to the sliding path of the sleeve, and the inner diameter of the locking groove is adapted to the outer diameter of the locking block.

[0012] This invention provides a vehicle exhaust tailpipe noise testing device, which has the following advantages compared with the prior art:

[0013] 1. The automobile exhaust tailpipe noise testing device designed in this paper, through the cooperation between the test handle, the test head and the adjustment block with the protective cover, the sleeve and the locking groove, can protect the test head during the test process, prevent dust from affecting the test results, and the protective cover is easy to disassemble and clean, thus maintaining the protective effect.

[0014] 2. The automobile exhaust tailpipe noise testing device designed in this paper can be easily connected and fixed to the automobile tailpipe during testing by adjusting the screw, connecting parts and movable ring with the second connecting rod, the first connecting rod and the support block. In addition, the device is small in size, easy to move flexibly and quickly disassemble and assemble, thereby increasing the flexibility of testing, saving testing time and improving testing efficiency. Attached Figure Description

[0015] Figure 1 A schematic diagram of a vehicle exhaust tailpipe noise testing device;

[0016] Figure 2A front view of a vehicle exhaust tailpipe noise testing device;

[0017] Figure 3 A device for testing the noise of automobile exhaust tailpipes Figure 2 AA section view in the middle;

[0018] Figure 4 This is an exploded structural diagram of a vehicle exhaust tailpipe noise testing device.

[0019] In the diagram: 1. Detection handle; 11. Movable groove; 12. Slide groove; 13. Connecting block; 14. Rotating shaft; 15. Adjusting block; 16. Torsion spring; 17. Engaging block; 18. Mounting groove; 19. Detection head; 2. Fixing unit; 21. Fixing ring; 22. First connecting rod; 23. Support block; 24. Second connecting rod; 25. Receiving block; 26. Movable ring; 27. Adjusting screw; 28. Connecting piece; 29. ​​Guide block; 3. Protective cover; 31. Sleeve; 32. Engaging groove. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4 This utility model provides a technical solution for a vehicle exhaust tailpipe noise testing device: it includes a testing handle 1, a fixing unit 2 is provided on the outer surface of the testing handle 1, a protective cover 3 is provided at one end of the testing handle 1, the fixing unit 2 includes a fixing ring 21, three first connecting rods 22 are connected in a ring on the outer surface of the fixing ring 21, one end of the three first connecting rods 22 is connected to a support block 23, one side of the three support blocks 23 is connected to a second connecting rod 24, and one end of each second connecting rod 24 is connected to a receiving block 25.

[0022] like Figure 1-3As shown, a detection head 19 is provided at one end of the detection handle 1, and a sound sensor is provided inside the detection head 19. Two connecting blocks 13 are connected in a ring on the outer surface of one end of the detection handle 1. Two rotating shafts 14 are provided on the inner sidewalls of the two connecting blocks 13. A sleeve 31 is provided at one end of the protective cover 3. An adjusting block 15 is connected between the two rotating shafts 14. Torsion springs 16 are connected to the outer surface of the rotating shafts 14 and on both sides of the connecting blocks 13. A locking block 17 is provided at one end of the adjusting block 15. Two mounting grooves 18 are formed in a ring on the outer surface of one end of the detection handle 1, corresponding to the sliding path of the sleeve 31. The outer surface of the sleeve 31... The surface and the two locking blocks 17 are each provided with a corresponding locking groove 32. The inner diameter of the connecting block 13 is adapted to the outer diameter of the adjusting block 15. The inner diameter of the sleeve 31 is adapted to the outer diameter of the detection handle 1. The inner diameter of the mounting groove 18 is adapted to the sliding path of the sleeve 31. The inner diameter of the locking groove 32 is adapted to the outer diameter of the locking block 17. It should be noted that the protective cover 3 can prevent dust from affecting the detection head 19 during the noise detection process. The cooperation between the two adjusting blocks 15 and the locking block 17 with the sleeve 31 and the locking groove 32 can facilitate the disassembly and cleaning of the protective cover 3.

[0023] like Figure 2-4 As shown, the inner walls of the three receiving blocks 25 are connected to movable rings 26. One end face of the detection handle 1 is connected to an adjusting screw 27. The inner wall of the movable ring 26 is connected to two guide blocks 29 in a ring shape. The inner walls of the two guide blocks 29 are connected to connectors 28. Connectors 28 are set on the outer surface of the adjusting screw 27. The inside of the detection handle 1 is provided with a movable groove 11 corresponding to the sliding path of the connector 28. The outer surface of the detection handle 1 is provided with a sliding groove 12 corresponding to the sliding path of the two guide blocks 29. The sliding groove 12 is connected to the movable groove 11. The inner diameter of the movable groove 11 is related to the sliding path of the connector 28. The inner diameter of the slide groove 12 is adapted to the sliding path of the guide block 29, and the outer diameter of the detection handle 1 is adapted to the sliding path of the movable ring 26. The movable ring 26 is connected to the fixed ring 21 through the second connecting rod 24, the support block 23, and the first connecting rod 22. It should be noted that the rotation of the adjusting screw 27 can drive the connecting piece 28 to slide along the inner wall of the movable groove 11, thereby allowing the movable ring 26 to slide along the outer surface of the detection handle 1. The second connecting rod 24 and the first connecting rod 22 will support the support block 23 and provide limiting support for the inner wall of the exhaust pipe, thereby achieving a fixed effect.

[0024] The working principle of this utility model is as follows: Press both adjusting blocks 15 along the inner wall of the connecting block 13, so that the adjusting blocks 15 squeeze the torsion spring 16 along the outer surface of the rotating shaft 14, and one end of the adjusting block 15 is raised, and the locking block 17 is separated from the locking groove 32 on the outer surface of the sleeve 31. Then, remove the protective cover 3 and the sleeve 31 along the outer surface of one end of the detection handle 1. The sleeve 31 slides and separates along the inner wall of the two mounting grooves 18, and the protective cover 3 can be removed for cleaning.

[0025] Insert one end of the test handle 1 into the exhaust tailpipe of the car, rotate the adjusting screw 27 so that the connecting piece 28 slides along the outer surface of the adjusting screw 27, and drives the two guide blocks 29 to slide along the slide groove 12 on the inner side wall of the movable groove 11. Meanwhile, the movable ring 26 slides along the outer surface of the test handle 1, causing the first connecting rod 22 and the second connecting rod 24 to tilt outwards, and push the support block 23 outwards until the support block 23 is in contact with and pressed against the inner side wall of the car tailpipe, thus completing the installation and fixing of the device.

[0026] The above are merely preferred embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model are implemented according to conventional methods in the art, unless otherwise specified or limited.

Claims

1. A device for testing the noise of an automobile exhaust tailpipe, characterized in that, Includes a detection handle (1): a fixing unit (2) is provided on the outer surface of the detection handle (1), and a protective cover (3) is provided at one end of the detection handle (1); The fixing unit (2) includes a fixing ring (21). The outer surface of the fixing ring (21) is connected with three first connecting rods (22) in a ring shape. One end of the three first connecting rods (22) is connected to a support block (23). One side of the three support blocks (23) is connected to a second connecting rod (24). One end of each of the second connecting rods (24) is connected to a receiving block (25).

2. The automobile exhaust tailpipe noise testing device according to claim 1, characterized in that, One end of the detection handle (1) is provided with a detection head (19), and the inside of the detection head (19) is provided with a sound sensor. The outer surface of one end of the detection handle (1) is connected in a ring with two connecting blocks (13). The inner sidewalls of the two connecting blocks (13) are provided with two rotating shafts (14). One end of the protective cover (3) is provided with a sleeve (31).

3. The automobile exhaust tailpipe noise testing device according to claim 1, characterized in that, The inner walls of the three receiving blocks (25) are connected to movable rings (26), and one end face of the detection handle (1) is connected to an adjusting screw (27). The inner walls of the movable rings (26) are connected to two guide blocks (29) in a ring shape, and the inner walls of the two guide blocks (29) are connected to connectors (28).

4. The automobile exhaust tailpipe noise testing device according to claim 3, characterized in that, The connector (28) is disposed on the outer surface of the adjusting screw (27). The inside of the detection handle (1) is provided with a movable groove (11) corresponding to the sliding path of the connector (28). The outer surface of the detection handle (1) is provided with a sliding groove (12) corresponding to the sliding path of the two guide blocks (29). The sliding groove (12) is connected to the movable groove (11).

5. The automobile exhaust tailpipe noise testing device according to claim 2, characterized in that, An adjusting block (15) is connected between the two rotating shafts (14). Torsion springs (16) are connected to the outer surface of the rotating shafts (14) and to both sides of the connecting block (13). A locking block (17) is provided at one end of the adjusting block (15). Two mounting grooves (18) are opened in a ring shape at the corresponding position of the outer surface of one end of the detection handle (1) and the sliding path of the sleeve (31). The outer surface of the sleeve (31) and the two locking blocks (17) are respectively provided with locking grooves (32).

6. The automobile exhaust tailpipe noise testing device according to claim 4, characterized in that, The inner diameter of the movable groove (11) is adapted to the sliding path of the connector (28), the inner diameter of the sliding groove (12) is adapted to the sliding path of the guide block (29), the outer diameter of the detection handle (1) is adapted to the sliding path of the movable ring (26), and the movable ring (26) is connected to the fixed ring (21) through the second connecting rod (24), the support block (23), and the first connecting rod (22).

7. The automobile exhaust tailpipe noise testing device according to claim 5, characterized in that, The inner diameter of the connecting block (13) is adapted to the outer diameter of the adjusting block (15), the inner diameter of the sleeve (31) is adapted to the outer diameter of the detection handle (1), the inner diameter of the mounting groove (18) is adapted to the sliding path of the sleeve (31), and the inner diameter of the engaging groove (32) is adapted to the outer diameter of the engaging block (17).

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