Oxygen sensor function testing device

Abstract

The utility model discloses an oxygen sensor function testing device, which relates to the technical field of oxygen sensor testing, and comprises a bottom plate, a flame gun mounted on the bottom plate, and a driving mechanism mounted on the bottom plate and positioned on one side of the flame gun, the driving mechanism comprises a support, a driving motor, a transmission assembly and an installation assembly used for installing an oxygen sensor to be detected, the driving motor and the transmission assembly are both installed on the support, the driving motor is in transmission connection with the transmission assembly, the installation assembly is installed on the transmission assembly, and the oxygen sensor to be detected is installed on the installation assembly. The driving motor drives the to-be-tested oxygen sensor to reciprocate in the flame range of the flame gun, changes of lean and rich oil in automobile exhaust are simulated by reciprocating in the flame range of the flame gun, so that whether the quality of the to-be-tested oxygen sensor is qualified or not is detected, the testing device is simple in structure, the size and the weight of the device are reduced, and the testing efficiency is improved. And the device is convenient to carry for testing in different application scenes.

Description

Technical Field

[0001] The present application relates to the technical field of oxygen sensor testing, and in particular to an oxygen sensor function testing device. Background Art

[0002] After the oxygen sensor is manufactured, it needs to be placed in the combustion chamber. By changing the gas concentration to simulate the performance indicators of the automobile exhaust rich and poor oil change detection sensor, the quality of the oxygen sensor can be judged.

[0003] Currently, the oxygen sensor testing device of related technology needs to be connected to a natural gas or coal gas pipeline to simulate the changes in the fuel-rich state of automobile exhaust by changing the fuel gas concentration. This testing device has a complex structure and cannot meet the customer's needs for convenient testing according to different usage scenarios.

[0004] Therefore, how to provide a convenient test according to different scenarios is a technical problem that those skilled in the art currently need to solve. Utility Model Content

[0005] In order to help solve the problem of convenient testing in different application scenarios, this application provides an oxygen sensor function test device, which adopts the following technical solutions:

[0006] An oxygen sensor function test device includes a base plate, a flamethrower mounted on the base plate, and a drive mechanism mounted on the base plate on one side of the flamethrower. The drive mechanism includes a bracket, a drive motor, a transmission assembly, and a mounting assembly for mounting the oxygen sensor to be tested. The drive motor and the transmission assembly are both mounted on the bracket and are in transmission connection with the transmission assembly. The mounting assembly is mounted on the transmission assembly. The drive motor drives the oxygen sensor to be tested to reciprocate within the flame range of the flamethrower.

[0007] By adopting the above technical solution, the driving motor drives the transmission assembly to move, so that the oxygen sensor to be tested on the installation assembly moves back and forth within the flame range of the flame spray gun. By moving back and forth within the flame range of the flame spray gun, the changes in the rich and poor fuel levels of automobile exhaust are simulated, thereby detecting whether the quality of the oxygen sensor to be tested is qualified. The test device has a simple structure, which helps to reduce the size and weight of the device, making it convenient to carry and use for testing in different application scenarios.

[0008] Optionally, the transmission assembly includes a transmission shaft, a crank, a connecting plate and a guide rod, the transmission shaft is rotatably arranged on the bracket, one end of the transmission shaft is transmission-connected to the output shaft of the drive motor, and the other end is fixedly connected to one end of the crank, the other end of the crank is hinged to one end of the connecting plate, the other end of the connecting plate is hinged to one end of the guide rod, the guide rod is slidably connected to the bracket, and the mounting assembly is installed on the end of the guide rod away from the connecting plate.

[0009] By adopting the above technical solution, the driving motor transmits power to the transmission shaft, so that the transmission shaft drives the crank to rotate together, and the crank drives the connecting plate to swing, so that the guide rod at the other end of the connecting plate moves back and forth on the bracket, and then the mounting assembly installed on the guide rod moves back and forth, and finally the oxygen sensor to be tested installed on the mounting assembly moves back and forth. The structure is simple and the operation is reliable.

[0010] Optionally, a guide seat is provided on the bracket, and the end of the guide rod away from the connecting plate can slide in the guide seat, and the sliding direction of the guide rod is perpendicular to the direction of the flamethrower.

[0011] By adopting the above technical solution, the guide rod is guided by the guide seat, which helps to improve the reliability of the reciprocating movement of the guide rod. The sliding direction of the guide rod is perpendicular to the direction of the flamethrower, so that the reciprocating movement can better simulate the changes in the rich and poor oil content of automobile exhaust, which helps to improve the accuracy of the test.

[0012] Optionally, the mounting assembly includes a fixing seat and a mounting bracket, the fixing seat is used to fix the oxygen sensor to be tested, the mounting bracket is fixedly mounted on one end of the fixing seat, and the end of the mounting bracket away from the fixing seat is detachably fixed to the end of the guide rod away from the connecting plate.

[0013] By adopting the above technical solution, the oxygen sensor to be tested is installed on the fixing seat, one end of the mounting bracket is fixedly connected to the fixing seat, and the other end is detachably fixed to the guide rod, which facilitates the installation of the oxygen sensor to be tested and the guide rod, helps to ensure the stability of the test, and improves the convenience of installing and removing the oxygen sensor to be tested.

[0014] Optionally, the fixing seat is provided with a through hole for passing the oxygen sensor to be tested, and a hexagonal hole is coaxially arranged with the through hole and adapted to the outer hexagon of the oxygen sensor to be tested, and a step is formed between the hexagonal hole and the through hole. One side of the fixing seat is also provided with a wire passing opening that passes through the through hole and the hexagonal hole, and the wire passing opening is used to pass through the wire sleeve of the oxygen sensor to be tested.

[0015] By adopting the above technical solution, when installing the oxygen sensor to be tested, the wire sleeve of the oxygen sensor to be tested passes through the wire passing port of the fixing seat, and the outer hexagonal corner of the oxygen sensor to be tested is inserted into the hexagonal hole and supported on the step, which helps to improve the convenience of installing the oxygen sensor to be tested.

[0016] Optionally, the mounting bracket is provided with a mounting hole and a waist-shaped hole on a side away from the mounting hole, the fixing seat is provided with a mounting thread, the mounting bracket is fixedly connected to the mounting thread on the fixing seat by passing a fastener through the mounting hole, the guide rod is provided with an external thread on one end away from the connecting plate, the external thread passes through the waist-shaped hole, and the mounting bracket is pressed onto the guide rod by installing a nut on the external thread.

[0017] By adopting the above technical solution, the mounting hole of the mounting bracket and the mounting thread on the fixing seat are fastened by fasteners, the waist-shaped hole of the mounting bracket is penetrated by the external thread of the guide rod, and the mounting bracket and the guide rod are pressed and fixed by a nut. The setting of the waist-shaped hole helps to facilitate the adjustment of the installation position of the mounting bracket, and thus facilitates the adjustment of the position of the oxygen sensor to be tested and the flame spraying position of the flamethrower.

[0018] Optionally, a test power supply for supplying power to the oxygen sensor to be tested and an oscilloscope for receiving signals transmitted by the oxygen sensor to be tested are electrically connected to the oxygen sensor to be tested, respectively.

[0019] By adopting the above technical solution, the test power supply and the oscilloscope are electrically connected to the oxygen sensor to be tested, respectively. The signal sensed by the oxygen sensor to be tested is transmitted to the oscilloscope, so that the signal generated by the oxygen sensor to be tested displays a corresponding waveform on the oscilloscope, which helps to judge whether the quality of the oxygen sensor to be tested is qualified based on the waveform.

[0020] Optionally, the testing device further comprises a shell fixedly mounted on the base plate and covering the driving mechanism, the shell being provided with a through hole passing through the guide rod and a handle being placed on the top of the shell.

[0021] By adopting the above technical solution, the shell is fixedly mounted on the bottom plate and covers the driving mechanism, which is conducive to the safety of transmission. A handle is provided on the top of the shell for easy carrying and mobile use.

[0022] Optionally, the testing device further comprises a spray gun cover mounted on the bottom plate and covering the spray gun, wherein the spray gun cover is located at an opening on one side of the spray gun nozzle, opposite to an adjustment hole on one side of the opening.

[0023] By adopting the above technical solution, one side of the spray gun cover is open to facilitate the spray flame to facilitate sensing by the oxygen sensor to be measured, and the other side is provided with an adjustment hole to facilitate adjustment of the regulating valve of the spray gun to generate an appropriate spray flame for sensing by the oxygen sensor to be measured.

[0024] Optionally, a base is provided under the flamethrower, the lower end of the base is fixed to the bottom plate, the upper end of the base is provided with a limiting hole, and the flamethrower is fixed in the limiting hole.

[0025] By adopting the above technical solution, a limiting hole is provided on the upper end of the base, and the flamethrower is fixed in the limiting hole, which helps to prevent the position of the flamethrower from changing during carrying and movement, so that the flamethrower remains in the correct position in the next test.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. This test device, through the cooperation of the flamethrower and the drive mechanism, can more realistically simulate the temperature changes of the oxygen sensor in the actual working environment, thereby improving the accuracy of the test. At the same time, it simplifies the device structure, greatly reduces the size and weight of the device, and is easy to carry and use for testing in different application scenarios;

[0028] 2. This test device has a simple structure and is easy to operate. It can significantly improve the efficiency of oxygen sensor performance testing. At the same time, the design of each part of the device fully considers the convenience of use and the stability of the test, making the testing process smoother and more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a structural schematic diagram of the front view of an oxygen sensor function test device disclosed in this application.

[0030] Figure 2 This is a front view of a cutaway shell of an oxygen sensor function test device disclosed in this application.

[0031] Figure 3 for Figure 2 A partial enlarged view of the middle I position.

[0032] Figure 4 This is a schematic diagram of the exploded structure of the installation assembly disclosed in this application.

[0033] Figure 5 This is a structural schematic diagram of the rear view of an oxygen sensor function test device disclosed in this application.

[0034] Description of reference numerals:

[0035] 1. Base plate; 2. Flame spray gun; 3. Driving mechanism; 31. Bracket; 311. Guide seat; 32. Driving motor; 33. Transmission assembly; 331. Transmission shaft; 332. Crank; 333. Connecting plate; 334. Guide rod; 3341. External thread; 34. Mounting assembly; 341. Fixing seat; 3411. Through hole; 3412. Hexagonal hole; 3413. Step; 3414. Wire passage; 3415. Mounting thread; 3416. Screw hole; 3417. Butterfly screw; 342. Mounting bracket; 3421. Mounting hole; 3422. Waist-shaped hole; 4. Test power supply; 5. Oscilloscope; 6. Housing; 61. Through hole; 62. Handle; 7. Spray gun cover; 71. Opening; 72. Adjustment hole; 8. Base; 81. Limit hole; 9. Oxygen sensor to be tested. DETAILED DESCRIPTION

[0036] The following combination Figures 1 to 5 This application is described in further detail.

[0037] The embodiment of the present application discloses an oxygen sensor function testing device.

[0038] An oxygen sensor function test device. Figure 1 and Figure 2 , including a base plate 1, a flamethrower 2, and a driving mechanism 3. The flamethrower 2 is installed on the base plate 1, and the driving mechanism 3 is installed on the base plate 1 on one side of the flamethrower 2. The driving mechanism 3 includes a bracket 31, a driving motor 32, a transmission assembly 33 and a mounting assembly 34. The oxygen sensor 9 to be tested is installed on the mounting assembly 34. The driving motor 32 and the transmission assembly 33 are both installed on the bracket 31. The driving motor 32 is transmission-connected to the transmission assembly 33. The mounting assembly 34 is installed on the transmission assembly 33. The driving motor 32 drives the oxygen sensor 9 to be tested to reciprocate within the flame range of the flamethrower 2. By reciprocating within the flame range of the flamethrower 2, the changes in the rich and poor fuel levels of automobile exhaust are simulated to detect whether the quality of the oxygen sensor 9 to be tested is qualified. The test device has a simple structure, which helps to reduce the volume and weight of the device and is convenient to carry and use for testing in different application scenarios.

[0039] Reference Figure 3The transmission assembly 33 includes a transmission shaft 331, a crank 332, a connecting plate 333 and a guide rod 334. The transmission shaft 331 is rotatably set on the bracket 31, and one end of the transmission shaft 331 is connected to the output shaft of the driving motor 32. It should be noted that this transmission connection can adopt gear transmission, belt transmission or chain transmission, which is not limited in this application. The other end of the transmission shaft 331 is fixedly connected to one end of the crank 332, and the two can be fixed together by welding or key connection. The other end of the crank 332 is hinged to one end of the connecting plate 333, and the other end of the connecting plate 333 is hinged to one end of the guide rod 334. The connecting plate 33 The hinges at both ends of the 3 are hinged via hinge shafts. The guide rod 334 is slidably connected to the bracket 31. The mounting assembly 34 is mounted on the end of the guide rod 334 away from the connecting plate 333. In this way, the driving motor 32 transmits power to the transmission shaft 331, causing the transmission shaft 331 to drive the crank 332 to rotate together. The crank 332 drives the connecting plate 333 to swing, thereby causing the guide rod 334 at the other end of the connecting plate 333 to reciprocate on the bracket 31, thereby causing the mounting assembly 34 mounted on the guide rod 334 to reciprocate, and finally causing the oxygen sensor 9 to be tested, which is mounted on the mounting assembly 34, to reciprocate. The structure is simple and the operation is reliable.

[0040] Reference Figure 3 The bracket 31 is provided with a guide seat 311, and the end of the guide rod 334 away from the connecting plate 333 can slide in the guide seat 311. The sliding direction of the guide rod 334 is perpendicular to the direction of the flamethrower 2. The guide seat 311 guides the guide rod 334, which helps to improve the reliability of the reciprocating movement of the guide rod 334. The sliding direction of the guide rod 334 is perpendicular to the direction of the flamethrower 2, so that the reciprocating movement can better simulate the changes in the rich and poor oil content of automobile exhaust, which helps to improve the accuracy of the test.

[0041] Reference Figure 4 The mounting assembly 34 includes a fixing seat 341 and a mounting bracket 342. The fixing seat 341 is used to fix the oxygen sensor 9 to be tested. The mounting bracket 342 is fixedly mounted on one end of the fixing seat 341. The end of the mounting bracket 342 away from the fixing seat is detachably fixed to the end of the guide rod 334 away from the connecting plate 333, which facilitates the installation of the oxygen sensor 9 to be tested and the guide rod 334, helps to ensure the stability of the test, and improves the convenience of installing and removing the oxygen sensor 9 to be tested.

[0042] Reference Figure 4The fixing seat 341 is provided with a through hole 3411 for passing the oxygen sensor 9 to be measured, a hexagonal hole 3412 coaxially arranged with the through hole 3411 and adapted to the outer hexagon of the oxygen sensor 9 to be measured, a step 3413 is formed between the hexagonal hole 3412 and the through hole 3411, and a wire opening 3414 passing through the through hole 3411 and the hexagonal hole 3412 is further provided on one side of the fixing seat 341. The wire opening 3414 is used to pass the wire sleeve of the oxygen sensor 9 to be measured. The fixing seat 341 is also provided with a There is a screw hole 3416 connected to the hexagonal hole 3412, and a butterfly screw 3417 is installed on the screw hole 3416. When installing the oxygen sensor 9 to be tested, the wire sleeve of the oxygen sensor 9 to be tested passes through the wire opening 3414 of the fixing seat 341, and the outer hexagonal corner of the oxygen sensor 9 to be tested is inserted into the hexagonal hole 3412 and supported on the step 3413. Tightening the butterfly screw 3417 to tighten the outer hexagonal corner of the oxygen sensor 9 to be tested helps to improve the convenience and firmness of installing the oxygen sensor 9 to be tested.

[0043] Reference Figure 4 The mounting bracket 342 is provided with a mounting hole 3421 and a waist-shaped hole 3422 on the side away from the mounting hole 3421. The fixing seat 341 is provided with a mounting thread 3415. The mounting bracket 342 is fixedly connected to the mounting thread 3415 on the fixing seat 341 by passing a fastener through the mounting hole 3421. The end of the guide rod 334 away from the connecting plate 333 is provided with an external thread 3341. The external thread 3341 passes through the waist-shaped hole 3422. The mounting bracket 342 is fixed on the external thread 3341. The mounting nut is pressed against the guide rod 334, and the mounting hole 3421 of the mounting bracket 342 and the mounting thread 3415 on the fixing seat 341 are fastened by fasteners. The waist-shaped hole 3422 of the mounting bracket 342 is penetrated by the external thread 3341 of the guide rod 334, and the mounting bracket 342 and the guide rod 334 are pressed and fixed by the nut. The setting of the waist-shaped hole 3422 helps to facilitate the adjustment of the installation position of the mounting bracket 342, and thus facilitates the adjustment of the position of the oxygen sensor 9 to be tested and the flame spraying position of the flamethrower 2.

[0044] Reference Figure 1 and Figure 2 The testing device also includes a testing power supply 4 and an oscilloscope 5. The testing power supply 4 is used to supply power to the oxygen sensor 9 to be tested. The testing power supply 4 is installed on the base plate 1. The oscilloscope 5 is used to receive the signal transmitted by the oxygen sensor 9 to be tested and is installed on the housing 6. The testing power supply 4 and the oscilloscope 5 are electrically connected to the oxygen sensor 9 to be tested respectively. The signal sensed by the oxygen sensor 9 to be tested is transmitted to the oscilloscope 5, so that the signal generated by the oxygen sensor 9 to be tested displays a corresponding waveform on the oscilloscope 5, which helps to judge whether the quality of the oxygen sensor 9 to be tested is qualified according to the waveform.

[0045] Reference Figure 5The testing device also includes a shell 6, which is fixedly mounted on the base plate 1 and covers the driving mechanism 3. The shell 6 is provided with a through hole 61 through which the guide rod 334 passes, and a handle 62 is placed on the top of the shell 6. The shell 6 is fixedly mounted on the base plate 1 and covers the driving mechanism 3, which contributes to the safety of the transmission. The handle 62 is provided on the top of the shell 6 for easy carrying and mobile use.

[0046] Reference Figure 5 The test device also includes a spray gun cover 7, which is installed on the base plate 1 to cover the spray gun 2. The spray gun cover 7 has an opening 71 on one side of the nozzle of the spray gun 2 and an adjustment hole 72 on the side opposite to the opening 71. The opening 71 on one side of the spray gun cover 7 is convenient for spraying flame to facilitate sensing by the oxygen sensor 9 to be tested, and the adjustment hole 72 is provided on the other side to facilitate adjustment of the regulating valve of the spray gun 2 to generate an appropriate spray flame for sensing by the oxygen sensor 9 to be tested.

[0047] Reference Figure 5 A base 8 is provided under the flamethrower 2, the lower end of the base 8 is fixed on the bottom plate 1, and a limiting hole 81 is provided at the upper end of the base 8. The flamethrower 2 is fixed in the limiting hole 81. The upper end of the base 8 is provided with a limiting hole 81. The flamethrower 2 is fixed in the limiting hole 81, which helps to prevent the position of the flamethrower 2 from changing during carrying and moving, so that the flamethrower 2 remains in the correct position in the next test.

[0048] The working process of an oxygen sensor function test device is as follows: the outer hexagonal corner of the oxygen sensor 9 to be tested is inserted into the step 3413 in the hexagonal hole 3412 on the fixing seat 341, the butterfly screw 3417 is tightened to tighten the outer hexagonal corner of the oxygen sensor 9 to be tested, the power line of the oxygen sensor 9 to be tested is connected to the test power supply 4, the signal line of the oxygen sensor 9 to be tested is connected to the oscilloscope 5, the flamethrower 2 is ignited, and the oxygen sensor 9 to be tested is preheated. When the waveform is displayed on the oscilloscope 5, the drive motor 32 is started, and the drive motor 32 transmits power to the transmission shaft 331, so that the transmission shaft 331 drives the crank 332 to rotate together. The crank 332 drives the connecting plate 333 to swing, thereby causing the guide rod 334 at the other end of the connecting plate 333 to reciprocate in the guide seat 311, thereby causing the oxygen sensor 9 to be tested mounted on the fixing seat 341 to reciprocate. The oxygen sensor 9 to be tested sends a sensing signal to the oscilloscope 5. The quality of the oxygen sensor 9 to be tested is determined based on the changes in the waveform displayed on the oscilloscope 5.

[0049] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application in sequence. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An oxygen sensor function test device, characterized by: The invention comprises a base plate (1), a flamethrower (2) mounted on the base plate (1), and a driving mechanism (3) mounted on the base plate (1) and located on one side of the flamethrower (2). The driving mechanism (3) comprises a bracket (31), a driving motor (32), a transmission assembly (33), and a mounting assembly (34) for mounting an oxygen sensor (9) to be measured. The driving motor (32) and the transmission assembly (33) are both mounted on the bracket (31). The driving motor (32) is in transmission connection with the transmission assembly (33). The mounting assembly (34) is mounted on the transmission assembly (33). The driving motor (32) drives the oxygen sensor (9) to be measured to move back and forth within the flame range of the flamethrower (2).

2. The oxygen sensor function test device according to claim 1, characterized in that: The transmission assembly (33) comprises a transmission shaft (331), a crank (332), a connecting plate (333) and a guide rod (334); the transmission shaft (331) is rotatably arranged on the bracket (31); one end of the transmission shaft (331) is transmission-connected to the output shaft of the drive motor (32); the other end is fixedly connected to one end of the crank (332); the other end of the crank (332) is hinged to one end of the connecting plate (333); the other end of the connecting plate (333) is hinged to one end of the guide rod (334); the guide rod (334) is slidably connected to the bracket (31); and the mounting assembly (34) is mounted on one end of the guide rod (334) away from the connecting plate (333).

3. The oxygen sensor function test device according to claim 2, characterized in that: A guide seat (311) is provided on the bracket (31), and one end of the guide rod (334) away from the connecting plate (333) can slide in the guide seat (311), and the sliding direction of the guide rod (334) is perpendicular to the direction of the flame spraying of the flame spray gun (2).

4. The oxygen sensor function test device according to claim 3, characterized in that: The mounting assembly (34) comprises a fixing seat (341) and a mounting frame (342), wherein the fixing seat (341) is used for fixing and mounting the oxygen sensor (9) to be tested, and the mounting frame (342) is fixedly mounted on one end of the fixing seat (341), and the end of the mounting frame (342) away from the fixing frame is detachably fixed to the end of the guide rod (334) away from the connecting plate (333).

5. The oxygen sensor function test device according to claim 4, characterized in that: The fixing seat (341) comprises a through hole (3411) for passing the oxygen sensor (9) to be measured, a hexagonal hole (3412) coaxially arranged with the through hole (3411) and adapted to the outer hexagon of the oxygen sensor (9) to be measured, a step (3413) being formed between the hexagonal hole (3412) and the through hole (3411), and a wire passing opening (3414) passing through the through hole (3411) and the hexagonal hole (3412) is further provided on one side of the fixing seat (341), the wire passing opening (3414) being used to pass the wire sleeve of the oxygen sensor (9) to be measured.

6. The oxygen sensor function test device according to claim 5, characterized in that: The mounting frame (342) is provided with a mounting hole (3421) and a waist-shaped hole (3422) on a side away from the mounting hole (3421); the fixing seat (341) is provided with a mounting thread (3415); the mounting frame (342) is fixedly connected to the mounting thread (3415) on the fixing seat (341) by passing a fastener through the mounting hole (3421); the guide rod (334) is provided with an external thread (3341) at one end away from the connecting plate (333); the external thread (3341) passes through the waist-shaped hole (3422); the mounting frame (342) is pressed onto the guide rod (334) by installing a nut on the external thread (3341).

7. The oxygen sensor function test device according to claim 1, characterized in that: The testing device further comprises a testing power supply (4) for supplying power to the oxygen sensor (9) to be tested and an oscilloscope (5) for receiving signals transmitted by the oxygen sensor (9) to be tested, wherein the testing power supply (4) and the oscilloscope (5) are respectively electrically connected to the oxygen sensor (9) to be tested.

8. The oxygen sensor function test device according to claim 2, characterized in that: The testing device further comprises a housing (6) fixedly mounted on the base plate (1) and covering the driving mechanism (3); the housing (6) is provided with a through hole (61) through which the guide rod (334) passes, and a handle (62) is placed on the top of the housing (6).

9. The oxygen sensor function test device according to claim 1, characterized in that: The testing device further comprises a spray gun cover (7) mounted on the base plate (1) and covering the spray gun (2); the spray gun cover (7) is located at an opening (71) on one side of the nozzle of the spray gun (2) and an adjustment hole (72) on a side opposite to the opening (71).

10. The oxygen sensor function test device according to claim 1, characterized in that: A base (8) is provided under the flame spray gun (2), the lower end of the base (8) is fixed on the bottom plate (1), the upper end of the base (8) is provided with a limiting hole (81), and the flame spray gun (2) is fixed in the limiting hole (81).

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