Automatic switching type tire sealing performance testing device

Abstract

The invention relates to the technical field of tire sealing performance testing, in particular to an automatic switching type tire sealing performance testing device. The invention provides an automatic switching type tire sealing performance testing device which can automatically switch tires so as to improve the tire testing continuity, save manpower and improve the testing efficiency. An automatic switching type tire sealing performance testing device comprises a mounting rack, rotating shafts, belt pulleys and the like, the left part and the right part of the mounting rack are rotatably connected with the rotating shafts, and the front sides of the rotating shafts are connected with the belt pulleys. After tire detection is completed, an electric push rod is started, a limiting frame moves downwards to be reset, a tire is placed on a conveying belt again, the conveying belt continues to convey the tire, a next to-be-tested tire is conveyed to the position between rotating pieces, and the purposes that the tire can be automatically switched, so that the tire testing continuity is improved, manpower is saved, and the tire testing efficiency is improved are achieved. And the test efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of tire sealing test, and in particular to an automatic switching type tire sealing test device. Background Art

[0002] Tires are an indispensable and important component of vehicles, and their performance directly affects the safety, comfort and fuel economy of vehicles. After the tires are produced, they need to be tested for sealing. Tire sealing test is an important step to ensure that the tires will not leak during use. This test can be used for quality control of new tires, maintenance inspection of old tires, and tire performance verification in special applications.

[0003] Existing tire sealing test devices usually place the tire in water inside a test box to observe whether bubbles are generated, thereby testing the tire sealing. However, after the tire is tested in the test box, the staff needs to take the tire out and replace it with the next tire to be tested, which is time-consuming and labor-intensive, reduces the continuity of the tire test, and causes low efficiency of the tire sealing test.

[0004] Therefore, an automatic switching tire sealing test device has been developed which can automatically switch tires in order to improve the continuity of tire testing, save manpower, and improve testing efficiency. Summary of the invention

[0005] In order to overcome the disadvantages of the existing tire sealing test device, after the tire is tested in the test box, the staff needs to take out the tire and replace it with the next tire to be tested, which is time-consuming and labor-intensive, reduces the continuity of the tire test, and leads to low efficiency of the tire sealing test. The present invention provides an automatic switching tire sealing test device which can automatically switch tires so as to improve the continuity of the tire test, save manpower, and improve the test efficiency.

[0006] The technical solution is: an automatic switching tire sealing test device, including a mounting frame, a rotating shaft, a pulley, a conveyor belt and a rotating mechanism. The left and right parts of the mounting frame are rotatably connected to the rotating shaft, the front sides of the rotating shafts are connected to pulleys, and the rotating shafts are connected with front and rear conveyor belts via transmission wheels. The mounting frame is provided with a rotating mechanism that can test tires.

[0007] As an improvement of the above scheme, the rotating mechanism includes a support frame, a motor, a rotating member, a support plate, an electric push rod and a limit frame. The upper rear side of the mounting frame is connected to the support frame, the front side of the upper part of the support frame is connected to the motor, the rotating member is connected to the motor output shaft, the lower part of the mounting frame is connected to the support plate, the left and right sides of the support plate are connected to the electric push rods, the limit frame is connected between the telescopic ends of the electric push rods, the rotating member is rotatably connected to the limit frame, and the upper rotating member is rotatably connected to the support frame. When the tire moves between the rotating members, the electric push rod on the support plate is started to push the limit frame to move upward, so that the rotating members are close to each other to clamp the tire, so that the tire moves upward and leaves the conveyor belt, and then the motor is started to drive the rotating member to rotate, so that the tire rotates. While the tire rotates, bubble liquid is sprayed onto the tire surface, and the tire sealing is tested by observing whether bubbles are generated on the tire surface. When the tire is tested, the electric push rod is started to move the limit frame downward and reset, so that the tire is placed on the conveyor belt again, so that the conveyor belt continues to convey the tire, and the next tire to be tested is conveyed between the rotating members.

[0008] As an improvement of the above solution, a pressing block is provided on each rotating member.

[0009] As an improvement of the above scheme, it also includes an adjustment mechanism, which includes a fixed frame, a cylinder, a first connecting frame and a first rotating wheel. The front side of the support frame is connected to the fixed frame, the lower side of the front of the fixed frame is connected to the cylinder, the telescopic end of the cylinder is connected to the first connecting frame, and the first rotating wheel is rotatably connected to the first connecting frame. After the bubble liquid is sprayed on the surface of the tire, the cylinder on the fixed frame is started to move the first connecting frame, driving the first rotating wheel to move and squeeze the tire.

[0010] As an improvement of the above scheme, it also includes a knocking mechanism, which includes a fixed plate, a rotating frame, a knocking block and a torsion spring. The left and right sides of the upper part of the support frame are connected to the fixed plates, the fixed plates are rotatably connected to the rotating frames, the rotating frames are connected to the knocking blocks, and the rotating frames are connected to the fixed plates with torsion springs. After the tire moves upward, it is located between the knocking blocks. When the upper rotating part rotates, it squeezes the rotating frame. The rotating frame rotates, and the torsion spring is deformed. At this time, the knocking block is separated from the tire. After the rotating part is separated from the rotating frame, the torsion spring is restored, so that the knocking block is reset.

[0011] As an improvement of the above solution, the striking blocks are all wedge-shaped.

[0012] As an improvement of the above scheme, an auxiliary mechanism is also included, which includes a guide plate, a guide frame, a second connecting frame and a second rotating wheel. The guide plates are connected to the front sides of the left and right parts and the rear sides of the left and right parts of the mounting frame. Multiple guide frames are connected to the limiting frame. The guide plates are all slidably connected to the second connecting frames. The second connecting frames are movably connected to adjacent guide frames. The second connecting frames are all rotatably connected to the second rotating wheels. When the limiting frame moves upward, it drives the guide frame to move upward, so that the second connecting frame moves on the guide plate close to the tire, so that the second rotating wheel contacts the tire, and when the tire rotates, it drives the second rotating wheel to rotate.

[0013] As an improvement of the above scheme, a spraying mechanism is also included, which includes a fixing part, a connecting pipe, a liquid spraying frame and a camera. The fixing part is connected to the right side of the upper part of the support frame, the connecting pipe is connected to the fixing part, the liquid spraying frame is connected to the front side of the upper part of the support frame, the connecting pipe is connected to the liquid spraying frame, the camera is connected to the front side of the upper part of the support frame, the camera is located above the liquid spraying frame, a water pipe is connected to the connecting pipe, bubble liquid is introduced into the connecting pipe through the water pipe, so that the liquid spraying frame sprays the bubble liquid onto the tire surface, and the tire spraying situation is observed through the camera.

[0014] As an improvement of the above solution, a connecting plate is provided on the right side of the connecting pipe.

[0015] As an improvement of the above scheme, it also includes an anti-deviation mechanism, which includes a support member, a telescopic rod, a pressure spring, a third connecting frame and a third rotating wheel. The left and right sides of the limit frame are connected to the support members, the upper side of the support members is connected to the telescopic rod, the telescopic end of the telescopic rod is connected to the third connecting frame, the third connecting frame and the connected telescopic rod are connected with a pressure spring, and the third connecting frame is rotatably connected with a third rotating wheel. When the limit frame moves upward, it drives the support member to move upward, so that the third rotating wheel on the third connecting frame contacts the tire, and the third rotating wheel always keeps in contact with the tire through the action of the pressure spring.

[0016] The present invention has the following advantages: 1. After the tire is tested, the present invention starts the electric push rod to move the limit frame downward and reset, so that the tire is placed back on the conveyor belt, and the conveyor belt continues to convey the tire, and the next tire to be tested is conveyed between the rotating parts, thereby achieving the effect of automatically switching tires, so as to improve the continuity of tire testing, save manpower, and improve testing efficiency.

[0017] 2. After the bubble liquid is sprayed on the tire surface, the present invention starts the cylinder on the fixed frame to move the first connecting frame, driving the first rotating wheel to move and squeeze the tire, thereby achieving the effect of being able to adjust the pressure on the tire and facilitating the testing of the sealing performance of the tire under different pressures.

[0018] 3. In the present invention, after the tire moves upward, it is located between the knocking blocks. When the rotating part on the upper side rotates, it squeezes the rotating frame, and the rotating frame rotates, causing the torsion spring to deform. At this time, the knocking block is separated from the tire. After the rotating part is separated from the rotating frame, the torsion spring recovers, so that the knocking block is reset, thereby achieving the effect of being able to knock on the tire to facilitate the detection of tire leakage points.

[0019] 4. When the limit frame of the present invention moves upward, it drives the guide frame to move upward, so that the second connecting frame moves on the guide plate close to the tire, so that the second rotating wheel contacts the tire. When the tire rotates, it drives the second rotating wheel to rotate, thereby achieving the effect of stabilizing the tire and avoiding tire deviation.

[0020] 5. The present invention connects a water pipe to a connecting pipe, introduces bubble liquid into the connecting pipe through the water pipe, and enables the spray frame to spray the bubble liquid onto the tire surface. The tire spraying situation is observed through a camera, thereby achieving the effect of automatically spraying the bubble liquid onto the tire surface, saving manpower, and improving test efficiency.

[0021] 6. When the limit frame of the present invention moves upward, it drives the support member to move upward, so that the third rotating wheel on the third connecting frame contacts the tire. The third rotating wheel always keeps in contact with the tire through the action of the pressure spring, thereby achieving the effect of compacting and balancing the tire and preventing the tire from shifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0023] Figure 2 It is a partial three-dimensional structural schematic diagram of the present invention.

[0024] Figure 3 It is a schematic diagram of the three-dimensional structure of the first part of the rotating mechanism of the present invention.

[0025] Figure 4 It is a schematic diagram of the three-dimensional structure of the second part of the rotating mechanism of the present invention.

[0026] Figure 5 It is a schematic diagram of the three-dimensional structure of the adjustment mechanism of the present invention.

[0027] Figure 6 It is a partial three-dimensional structural schematic diagram of the striking mechanism of the present invention.

[0028] Figure 7 It is a schematic diagram of the three-dimensional structure of the first part of the auxiliary mechanism of the present invention.

[0029] Figure 8 It is a schematic diagram of the three-dimensional structure of the second part of the auxiliary mechanism of the present invention.

[0030] Fig. 9It is a schematic diagram of the three-dimensional structure of the spraying mechanism of the present invention.

[0031] Fig.10 It is a schematic diagram of the three-dimensional structure of the first part of the anti-deflection mechanism of the present invention.

[0032] Fig.11 It is a schematic diagram of the three-dimensional structure of the second part of the anti-deflection mechanism of the present invention.

[0033] Label names in the figure: 0-tire, 1-mounting frame, 2-rotating shaft, 21-pulley, 3-conveyor belt, 4-rotating mechanism, 41-support frame, 42-motor, 43-rotating member, 44-support plate, 45-electric push rod, 46-limiting frame, 5-adjusting mechanism, 51-fixed frame, 52-cylinder, 53-first connecting frame, 54-first rotating wheel, 6-knocking mechanism, 61-fixed plate, 62-rotating frame, 63-knocking block, 64-torsion spring, 7-auxiliary mechanism, 71-guide plate, 72-guide frame, 73-second connecting frame, 74-second rotating wheel, 8-spraying mechanism, 81-fixed member, 82-connecting pipe, 83-liquid spray frame, 84-camera, 9-anti-bias mechanism, 91-support member, 92-telescopic rod, 93-pressure spring, 94-third connecting frame, 95-third rotating wheel. DETAILED DESCRIPTION

[0034] The technical solution is further described below in conjunction with specific embodiments. It should be noted that the words indicating directions such as up, down, left, and right mentioned in this article are only for the position of the structure shown in the corresponding drawings. The serial numbers of the parts in this article, such as first, second, etc., are only used to distinguish the objects described and do not have any order or technical meaning. The words such as connection and coupling in this application include direct and indirect connection (coupling) unless otherwise specified.

[0035] An automatic switching tire sealing test device, such as Figure 1 and Figure 2 As shown, it includes a mounting frame 1, a rotating shaft 2, a pulley 21, a conveyor belt 3 and a rotating mechanism 4. The left and right parts of the mounting frame 1 are both rotatably connected to the rotating shaft 2, the front side of the rotating shaft 2 is connected to the pulley 21, and the front and rear conveyor belts 3 are connected between the rotating shafts 2 through a transmission wheel. The mounting frame 1 is provided with a rotating mechanism 4.

[0036] like Figure 1 , Figure 3 and Figure 4As shown, the rotating mechanism 4 includes a support frame 41, a motor 42, a rotating member 43, a support plate 44, an electric push rod 45 and a limit frame 46. The support frame 41 is connected to the upper rear side of the mounting frame 1, the motor 42 is connected to the front side of the upper part of the support frame 41, the rotating member 43 is connected to the output shaft of the motor 42, and the rotating member 43 is provided with a pressure block for pressing the tire 0. The lower part of the mounting frame 1 is connected to the support plate 44, and the electric push rod 45 is connected to the left and right sides of the support plate 44. The limit frame 46 is connected between the telescopic ends of the electric push rod 45, and the rotating member 43 is rotatably connected to the limit frame 46. The upper rotating member 43 is rotatably connected to the support frame 41.

[0037] When using the present invention, firstly place the mounting frame 1 in the tire 0 sealing test area, then place the tire 0 to be tested on the conveyor belt 3, then use a belt to wrap it between the pulley 21 and the output shaft of the external motor 42, start the external motor 42, drive the external motor 42 to rotate, so that the rotating shaft 2 and the conveyor belt 3 rotate to convey the tire 0, when the tire 0 moves between the rotating parts 43, start the electric push rod 45 on the support plate 44, push the limit frame 46 to move upward, so that the rotating parts 43 are close to each other to clamp the tire 0, so that the tire 0 moves upward and leaves the conveyor belt 3, and then start the electric push rod 45 on the support plate 44. The machine 42 drives the rotating member 43 to rotate, so that the tire 0 rotates. While the tire 0 rotates, the bubble liquid is sprayed onto the surface of the tire 0. By observing whether bubbles are generated on the surface of the tire 0, the sealing of the tire 0 is tested. When the tire 0 is tested, the electric push rod 45 is started to move the limit frame 46 downward and reset, so that the tire 0 is placed on the conveyor belt 3 again, and the conveyor belt 3 continues to convey the tire 0, and the next tire 0 to be tested is conveyed between the rotating members 43, thereby playing a role in automatically switching the tire 0, so as to improve the continuity of the tire 0 test, save manpower, and improve the test efficiency.

[0038] like Figure 1 and Figure 5 As shown, it also includes an adjusting mechanism 5, which includes a fixed frame 51, a cylinder 52, a first connecting frame 53 and a first rotating wheel 54. The front side of the support frame 41 is connected to the fixed frame 51, the lower front side of the fixed frame 51 is connected to the cylinder 52, the telescopic end of the cylinder 52 is connected to the first connecting frame 53, and the first connecting frame 53 is rotatably connected to the first rotating wheel 54.

[0039] The adjustment mechanism 5 of the device can be used to adjust the pressure on the tire 0. After the bubble liquid is sprayed on the surface of the tire 0, the cylinder 52 on the fixed frame 51 is started to move the first connecting frame 53, driving the first rotating wheel 54 to move and squeeze the tire 0, thereby adjusting the pressure on the tire 0 and facilitating the testing of the sealing performance of the tire 0 under different pressures.

[0040] like Figure 1 and Figure 6 As shown, it also includes a knocking mechanism 6, which includes a fixed plate 61, a rotating frame 62, a knocking block 63 and a torsion spring 64. The left and right sides of the upper part of the support frame 41 are connected to the fixed plates 61, the rotating frames 62 are rotatably connected to the fixed plates 61, the rotating frames 62 are connected to the knocking blocks 63, the knocking blocks 63 are wedge-shaped, which are convenient for contacting with the tire 0, and the torsion springs 64 are connected between the rotating frames 62 and the connected fixed plates 61.

[0041] The knocking mechanism 6 of the device can be used to knock on the tire 0. After the tire 0 moves upward, it is located between the knocking blocks 63. When the upper rotating part 43 rotates, it squeezes the rotating frame 62. The rotating frame 62 rotates, and the torsion spring 64 is deformed. At this time, the knocking block 63 is separated from the tire 0. After the rotating part 43 is separated from the rotating frame 62, the torsion spring 64 is restored, so that the knocking block 63 is reset, thereby achieving the effect of being able to knock on the tire 0 to facilitate the detection of the tire 0 leakage point.

[0042] like Figure 1 , Figure 7 and Figure 8 As shown, an auxiliary mechanism 7 is also included, and the auxiliary mechanism 7 includes a guide plate 71, a guide frame 72, a second connecting frame 73 and a second rotating wheel 74. The guide plates 71 are connected to the front sides of the left and right parts and the rear sides of the left and right parts of the mounting frame 1, and four guide frames 72 are connected to the limiting frame 46. The guide plates 71 are all slidably connected to the second connecting frames 73, and the second connecting frames 73 are movably connected to the adjacent guide frames 72. The second connecting frames 73 are all rotatably connected to the second rotating wheels 74.

[0043] By using the auxiliary mechanism 7 of the device, the tire 0 can be stabilized. When the limit frame 46 moves upward, it drives the guide frame 72 to move upward, so that the second connecting frame 73 moves on the guide plate 71 close to the tire 0, so that the second rotating wheel 74 contacts the tire 0. When the tire 0 rotates, it drives the second rotating wheel 74 to rotate, thereby stabilizing the tire 0 and preventing the tire 0 from deviating.

[0044] like Figure 1 and Fig. 9 As shown, a spray mechanism 8 is also included, and the spray mechanism 8 includes a fixing part 81, a connecting pipe 82, a liquid spray frame 83 and a camera 84. The fixing part 81 is connected to the right side of the upper part of the support frame 41, and a connecting pipe 82 is connected to the fixing part 81. A connecting plate is provided on the right side of the connecting pipe 82 to facilitate the connection of a water pipe. The liquid spray frame 83 is connected to the front side of the upper part of the support frame 41, and the connecting pipe 82 is connected to the liquid spray frame 83. The camera 84 is connected to the front side of the upper part of the support frame 41, and the camera 84 is located above the liquid spray frame 83.

[0045] The spraying mechanism 8 of the device can automatically spray the bubble liquid. The water pipe is connected to the connecting pipe 82, and the bubble liquid is introduced into the connecting pipe 82 through the water pipe, so that the spraying frame 83 sprays the bubble liquid onto the surface of the tire 0. The spraying situation of the tire 0 is observed through the camera 84, thereby playing the role of automatically spraying the bubble liquid onto the surface of the tire 0, saving manpower and improving the test efficiency.

[0046] like Figure 1 , Fig.10 and Fig.11 As shown, an anti-deviation mechanism 9 is also included, and the anti-deviation mechanism 9 includes a support member 91, a telescopic rod 92, a pressure spring 93, a third connecting frame 94 and a third rotating wheel 95. The left and right sides of the limit frame 46 are connected to the support members 91, the upper side of the support member 91 is connected to the telescopic rod 92, the telescopic end of the telescopic rod 92 is connected to the third connecting frame 94, the third connecting frame 94 is connected to the telescopic rod 92 connected thereto with a pressure spring 93, and the third connecting frame 94 is rotatably connected to the third rotating wheel 95.

[0047] The anti-deviation mechanism 9 of the device can prevent the tire 0 from deviating. When the limit frame 46 moves upward, it drives the support member 91 to move upward, so that the third rotating wheel 95 on the third connecting frame 94 contacts the tire 0. The third rotating wheel 95 always keeps in contact with the tire 0 through the action of the pressure spring 93, thereby playing the role of pressing and balancing the tire 0 and preventing the tire 0 from deviating.

[0048] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic switching tire sealing test device, characterized in that: The invention comprises a mounting frame (1), a rotating shaft (2), a belt pulley (21), a conveyor belt (3) and a rotating mechanism (4); the left and right parts of the mounting frame (1) are both rotatably connected to the rotating shaft (2); the front side of the rotating shaft (2) is connected to the belt pulley (21); two front and rear conveyor belts (3) are wound around the rotating shaft (2) via a transmission wheel; and the mounting frame (1) is provided with a rotating mechanism (4) capable of testing a tire (0).

2. The automatic switching tire sealing test device according to claim 1, characterized in that: The rotating mechanism (4) comprises a support frame (41), a motor (42), a rotating member (43), a support plate (44), an electric push rod (45) and a limiting frame (46). The upper rear side of the mounting frame (1) is connected to the support frame (41), the upper front side of the support frame (41) is connected to the motor (42), the output shaft of the motor (42) is connected to the rotating member (43), the lower part of the mounting frame (1) is connected to the support plate (44), the left and right sides of the support plate (44) are connected to the electric push rod (45), the limiting frame (46) is connected between the telescopic ends of the electric push rod (45), the rotating member (43) is rotatably connected to the limiting frame (46), the upper rotating member (43) is rotatably connected to the supporting frame (41), when the tire (0) moves between the rotating members (43), the support plate is started The electric push rod (45) on the tire (44) pushes the limit frame (46) to move upward, so that the rotating parts (43) are close to each other to clamp the tire (0), so that the tire (0) moves upward and leaves the conveyor belt (3), and then the motor (42) is started to drive the rotating part (43) to rotate, so that the tire (0) rotates. While the tire (0) rotates, the bubble liquid is sprayed onto the surface of the tire (0), and the sealing of the tire (0) is tested by observing whether bubbles are generated on the surface of the tire (0). After the tire (0) is tested, the electric push rod (45) is started to move the limit frame (46) downward to reset, so that the tire (0) is placed on the conveyor belt (3) again, so that the conveyor belt (3) continues to transport the tire (0), and the next tire (0) to be tested is transported between the rotating parts (43).

3. The automatic switching tire sealing test device according to claim 2, characterized in that: The rotating member (43) is provided with a pressing block.

4. The automatic switching tire sealing test device according to claim 2, characterized in that: The invention also comprises an adjusting mechanism (5), which comprises a fixing frame (51), a cylinder (52), a first connecting frame (53) and a first rotating wheel (54). The front side of the supporting frame (41) is connected to the fixing frame (51), the front lower side of the fixing frame (51) is connected to the cylinder (52), the telescopic end of the cylinder (52) is connected to the first connecting frame (53), and the first connecting frame (53) is rotatably connected to the first rotating wheel (54). After the bubble liquid is sprayed on the surface of the tire (0), the cylinder (52) on the fixing frame (51) is started to move the first connecting frame (53), thereby driving the first rotating wheel (54) to move and squeeze the tire (0).

5. The automatic switching tire sealing test device according to claim 4, characterized in that: The invention also comprises a knocking mechanism (6), which comprises a fixed plate (61), a rotating frame (62), a knocking block (63) and a torsion spring (64). The left and right sides of the upper part of the support frame (41) are connected to the fixed plate (61), the rotating frame (62) is rotatably connected to the fixed plate (61), the knocking block (63) is connected to the rotating frame (62), and the torsion spring (64) is connected between the rotating frame (62) and the connected fixed plate (61). After the tire (0) moves upward, it is located between the knocking blocks (63). When the upper rotating member (43) rotates, it squeezes the rotating frame (62), the rotating frame (62) rotates, and the torsion spring (64) is deformed. At this time, the knocking block (63) is separated from the tire (0). After the rotating member (43) is separated from the rotating frame (62), the torsion spring (64) is restored, so that the knocking block (63) is reset.

6. The automatic switching tire sealing test device according to claim 5, characterized in that: The knocking blocks (63) are all wedge-shaped.

7. The automatic switching tire sealing test device according to claim 5, characterized in that: The auxiliary mechanism (7) also includes a guide plate (71), a guide frame (72), a second connecting frame (73) and a second rotating wheel (74). The front sides of the left and right parts of the mounting frame (1) and the rear sides of the left and right parts are both connected to the guide plates (71). The limiting frame (46) is connected to a plurality of guide frames (72). The guide plates (71) are all slidably connected to the second connecting frames (73). The second connecting frames (73) are all movably connected to adjacent guide frames (72). The second connecting frames (73) are all rotatably connected to the second rotating wheels (74). When the limiting frame (46) moves upward, it drives the guide frame (72) to move upward, so that the second connecting frame (73) moves on the guide plate (71) close to the tire (0), so that the second rotating wheel (74) contacts the tire (0). When the tire (0) rotates, it drives the second rotating wheel (74) to rotate.

8. The automatic switching tire sealing test device according to claim 7, characterized in that: The invention also comprises a spraying mechanism (8), the spraying mechanism (8) comprising a fixing member (81), a connecting pipe (82), a liquid spraying frame (83) and a camera (84); the fixing member (81) is connected to the right side of the upper part of the support frame (41); the connecting pipe (82) is connected to the fixing member (81); the liquid spraying frame (83) is connected to the front side of the upper part of the support frame (41); the connecting pipe (82) is connected to the liquid spraying frame (83); the camera (84) is connected to the front side of the upper part of the support frame (41); the camera (84) is located above the liquid spraying frame (83); a water pipe is connected to the connecting pipe (82); bubble liquid is introduced into the connecting pipe (82) through the water pipe, so that the liquid spraying frame (83) sprays the bubble liquid onto the surface of the tire (0); and the liquid spraying situation of the tire (0) is observed through the camera (84).

9. The automatic switching tire sealing test device according to claim 8, characterized in that: A connecting plate is provided on the right side of the connecting pipe (82).

10. The automatic switching tire sealing test device according to claim 8, characterized in that: The anti-deflection mechanism (9) also includes a support member (91), a telescopic rod (92), a pressure spring (93), a third connecting frame (94) and a third rotating wheel (95). The left and right sides of the limiting frame (46) are connected to the support member (91). The upper side of the supporting member (91) is connected to the telescopic rod (92). The telescopic end of the telescopic rod (92) is connected to the third connecting frame (94). The third connecting frame (94) is connected to the connected telescopic rod (92) with a pressure spring (93). The third connecting frame (94) is rotatably connected to the third rotating wheel (95). When the limiting frame (46) moves upward, it drives the support member (91) to move upward, so that the third rotating wheel (95) on the third connecting frame (94) contacts the tire (0). The third rotating wheel (95) always keeps in contact with the tire (0) through the action of the pressure spring (93).

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