Detection equipment for air tightness of automobile inner tube

Abstract

The utility model belongs to the technical field of automobile inner tubes, and particularly relates to an automobile inner tube air tightness detection device, which comprises a workbench, a water tank is fixedly arranged in the workbench, an inner tube to be detected is placed in a placing frame, an air inlet pipe of the inner tube is fixed by a fixing assembly, and the air tightness of the inner tube is detected. The multiple limiting hoops are rotated to the surface of the inner tube, the electromagnets are used for magnetically attracting and fixing the limiting hoops, then the inflation assembly is used for inflating the inner tube, in the process, resilience force generated by the first springs enables the limiting hoops to press the inner tube downwards, and therefore the inner tube is limited and fixed. The two first electric push rods are used for driving the containing frame to enter water in the water tank, then the air tightness of the inner tube is judged by observing whether bubbles emerge on the surface of the inner tube in the water or not, and in the process, workers do not need to manually inflate the inner tube and press the inner tube into the water; therefore, the effect of facilitating the batch detection of the air tightness of the inner tubes by workers is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile inner tubes, and particularly relates to a detection device for the air tightness of an automobile inner tube. Background Technique

[0002] The automobile inner tube, commonly known as the inner tire, refers to a circular elastic tube used to maintain the internal pressure of the tire and equipped with a tire valve. The valve is used for inflation and keeping a certain pressure of air inside the inner tube. The inner tube should have good air tightness, heat resistance, elasticity, aging resistance and small permanent deformation. Generally, it is made of butyl rubber. The main properties of the butyl rubber inner tube: the butyl rubber inner tube has good self-sealing performance of the colloid, high air tightness. The air pressure in the inner tube is above 8MPA after loading. The high air tightness tire body reduces the natural leakage of gas, reduces the inflation frequency of the inner tube made of natural rubber during use, and is more fuel-efficient during driving.

[0003] For example, the Chinese patent with the publication number CN209181968U discloses a detection device for the air tightness of an automobile inner tube. This patent conveys the tire to the port of the detection water tank through a conveyor belt. Workers align the air nozzle of the tire with the inflation nozzle to inflate the tire, and then put the inflated tire into the detection water tank to observe whether there are bubbles in the water tank to judge the air tightness of the automobile inner tube.

[0004] The above patent has the following problems:

[0005] This patent has some disadvantages when in use. For example, workers need to manually inflate the tire and then immerse it in water to detect the air tightness. Furthermore, the inflated tire floats in the water. At this time, workers may need to manually press it into the water. Then, when the floating tire is pressed into the water, it may turn over due to the floating state. Moreover, in batch detection, workers may need to spend a long time controlling the tire to enter the water tank, so it may not be easy for batch detection of tires.

[0006] In view of this, we propose a detection device for the air tightness of an automobile inner tube. Summary of the Invention

[0007] The purpose of the utility model is to provide a detection device for the air tightness of an automobile inner tube to solve the problems put forward in the above background technique.

[0008] In view of this, the present utility model provides a detection device for the air tightness of an automobile inner tube, comprising: a workbench, inside which a water tank is fixedly installed, inside the water tank there is a placement rack, on the top surface of the workbench there is a transmission box fixedly installed, on the top surface of the workbench there are two positioning holes opened, inside each of the two positioning holes there is a first electric push rod fixedly installed, on the top surface of the telescopic rod of each of the two first electric push rods there is a first connecting plate fixedly installed, and one side of each of the two first connecting plates is fixedly installed with the placement rack;

[0009] A number of first positioning columns, all of the number of first positioning columns are fixedly installed on the inner bottom surface of the water tank, on the outer circumferential wall surface of each of the number of first positioning columns there is a connecting sleeve slidably connected, and one side of each of the number of connecting sleeves is fixedly installed with the placement rack;

[0010] A number of limiting hoops, all of the number of limiting hoops are arranged on the top surface of the placement rack, on the inner circumferential wall surface of the placement rack there are a number of first mounting plates fixedly installed, on the bottom surface of each of the number of limiting hoops there is a fixed plate rotatably connected, on the top surface of each of the number of connecting sleeves there is a mounting sleeve, inside each of the number of mounting sleeves there is an electromagnet fixedly installed, on the bottom surface of each of the number of mounting sleeves and on the bottom surface of each of the fixed plates there is a second positioning column, the second positioning columns respectively penetrate through the connecting sleeves and the first mounting plates, and on the outer circumferential wall surface of each of the number of second positioning columns there is a first spring movably sleeved;

[0011] A fixing component, which is arranged on the inner circumferential wall surface of the placement rack and is used for fixing the air inlet pipe of the inner tube;

[0012] An inflation component, which is arranged inside the transmission box and is used for inflating the inner tube.

[0013] In this technical solution, the staff places the inner tube to be detected inside the placement rack. Then, the staff uses the fixing component to fix the air inlet pipe of the inner tube. After that, the staff rotates multiple limiting hoops to the surface of the inner tube. At this time, the staff uses an electromagnet. When the electromagnet is powered on, it will magnetically fix the limiting hoops. Then, the staff uses the inflation component to inflate the inner tube. During this process, since the inner tube expands when inflated, the inner tube will push the limiting hoops to move upward. Then, the upward movement of the limiting hoops will drive the fixing plate and the mounting sleeve to move upward, and at the same time, the first spring will be compressed. At this time, the resilience generated by the first spring will cause the limiting hoops to press down on the inner tube, thereby limiting and fixing the inner tube inside the placement rack. After the above steps are completed, the staff uses two first electric push rods. When the telescopic rods of the first electric push rods retract, they will drive two first connecting plates and the placement rack to move. Then, the placement rack will enter the water inside the water tank. At this time, the staff can judge the airtightness of the inner tube by observing whether bubbles emerge from the surface of the inner tube in the water, so as to achieve the effect of detecting the airtightness of the inner tube. During this process, the staff does not need to manually inflate the inner tube and then press it into the water. Instead, the staff only needs to pick up and place the inner tube, thus achieving the effect of facilitating the staff to batch-detect the airtightness of the inner tube.

[0014] In the above technical solution, further, the fixing component includes:

[0015] A second mounting plate, which is fixedly installed on the inner circular wall surface of the placement rack. One side of the second mounting plate is provided with a mounting block. One side of the mounting block is fixedly installed with two limiting plates. Between the two limiting plates, there are two clamping blocks. One side of each of the two clamping blocks is fixedly installed with two guide posts. A number of the guide posts all penetrate through the limiting plates, and the outer circular wall surfaces of a number of the guide posts are all movably sleeved with second springs.

[0016] In this technical solution, after the staff places the inner tube inside the placement rack, the staff presses the air inlet pipe of the inner tube between the two clamping blocks. Then, the two clamping blocks will move under extrusion, and at the same time, the second springs will be compressed. Thus, the resilience of the second springs will drive the two clamping blocks to clamp and fix the air inlet pipe of the inner tube, thereby facilitating the subsequent inflation of the inner tube.

[0017] In the above technical solution, further, the inflation component includes:

[0018] A moving plate, which is slidably connected inside the transmission box. A lead screw is rotatably connected inside the transmission box. A driving motor is fixedly installed on the top surface of the transmission box. The bottom surface of the driving shaft of the driving motor is fixedly installed with the lead screw. A threaded hole is opened on the top surface of the moving plate, and the threaded hole is threadedly connected with the lead screw. One side of the moving plate is slidably connected with an adjusting plate. A circular through hole is opened on the top surface of the adjusting plate, and an insertion tube is fixedly sleeved on the inner circular wall surface of the circular through hole.

[0019] In this technical solution, when the staff needs to inflate the inner tube, the staff installs the air pipe of the external air pump to the outside of the insertion tube. Then the staff uses the driving motor. Then the rotation of the driving shaft of the driving motor will drive the lead screw to rotate. At this time, under the action of the threaded transmission of the lead screw and the threaded hole, the moving plate will drive the adjusting plate to move up and down. Then the insertion tube at the bottom of the adjusting plate will be inserted into the air inlet pipe of the inner tube and inflate the inner tube, so as to achieve the effect of inflating the inner tube.

[0020] In the above technical solution, further, an adjusting hole is opened on one side of the mounting block. An adjusting bolt is rotatably connected inside the adjusting hole. A threaded groove is opened on one side of the second mounting plate, and the threaded groove is threadedly connected with the adjusting bolt. A second electric push rod is fixedly installed on the top surface of the moving plate. A second connecting plate is fixedly installed on the top surface of the adjusting plate. One side of the second connecting plate is fixedly installed with the telescopic rod of the second electric push rod.

[0021] In this technical solution, the staff can rotate the adjusting bolt. Then, under the threaded transmission of the adjusting bolt and the guiding hole, the use positions of the two clamping blocks are changed. At the same time, the use position of the adjusting plate is changed by the telescopic rod of the second electric push rod and its position is kept corresponding, so as to facilitate the inflation of inner tubes of different sizes.

[0022] In the above technical solution, further, two guiding holes are opened on one side of the second mounting plate. Two second guiding rods are fixedly installed on one side of the mounting block. The two second guiding rods are respectively slidably connected with the two guiding holes.

[0023] In this technical solution, it is convenient to guide and limit the mounting block when it moves.

[0024] In the above technical solution, further, two circular through holes are opened on the top surface of the first mounting plate. Two first guiding rods are fixedly installed on the bottom surface of the fixing plate. The first guiding rods are movably sleeved with the circular through holes.

[0025] In this technical solution, it is convenient to guide and limit the fixing plate when it moves.

[0026] The beneficial effects of the utility model are:

[0027] The detection device for the air tightness of the inner tire of an automobile fixes the air inlet pipe of the inner tire to be detected by placing the inner tire to be detected inside the placement rack, rotates a plurality of limiting hoops to the surface of the inner tire and magnetically fixes the limiting hoops by using an electromagnet, and then inflates the inner tire by using an inflation assembly. During this process, the resilience generated by the first spring will cause the limiting hoop to press down on the inner tire, so as to limit and fix the inner tire. After the above steps are completed, two first electric push rods are used to drive the placement rack into the water inside the water tank, and then whether bubbles emerge from the surface of the inner tire in the water is observed to judge the air tightness of the inner tire. During this process, the staff does not need to manually inflate the inner tire and then press it into the water, thus achieving the effect of facilitating the staff to batch detect the air tightness of the inner tire. Description of the Drawings

[0028] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0029] Figure 2 is a schematic diagram of the water tank structure of the present utility model;

[0030] Figure 3 is a schematic diagram of the placement rack structure of the present utility model;

[0031] Figure 4 is a schematic diagram of the mounting block structure of the present utility model;

[0032] Figure 5 is a schematic diagram of the transmission box structure of the present utility model.

[0033] The marks in the figure are shown as:

[0034] 1, workbench; 2, water tank; 3, transmission box; 4, positioning hole; 5, first electric push rod; 6, placement rack; 7, first connecting plate; 8, first positioning column; 9, second connecting plate; 10, connecting sleeve; 11, limiting hoop; 12, first mounting plate; 13, fixing plate; 14, first guide rod; 15, second mounting plate; 16, mounting sleeve; 17, electromagnet; 18, second positioning column; 19, first spring; 20, mounting block; 21, adjusting hole; 22, adjusting bolt; 23, thread groove; 24, guide hole; 25, second guide rod; 26, limiting plate; 27, guide column; 28, second spring; 29, clamping block; 30, driving motor; 31, lead screw; 32, moving plate; 33, threaded hole; 34, second electric push rod; 35, adjusting plate; 36, insertion tube. Detailed Embodiments

[0035] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0036] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, rather than intending to limit the exemplary embodiments of the present application. For the convenience of description, the sizes of the various parts shown in the drawings are not drawn in actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0037] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same category, and do not limit the number of objects. For example, the first object can be one or multiple. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally means an "or" relationship between the associated objects before and after.

[0038] It should be noted that in the description of the present application, the orientation or positional relationships indicated by the orientation terms such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal", and "top, bottom" are usually based on the orientation or positional relationships shown in the drawings. It is only for the convenience of describing the present application and simplifying the description. Without contrary explanation, these orientation terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present application; the orientation terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0039] It should be noted that in this application, the terms "comprising", "including" or any other variants thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the presence of additional identical elements in the process, method, article or device comprising that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described method may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples. Embodiment

[0040] Please refer to Figures 1 - 5 As shown, this embodiment provides a detection device for the airtightness of an automobile inner tube, including: a workbench 1, a water tank 2 is fixedly installed inside the workbench 1, a placement rack 6 is arranged inside the water tank 2, a transmission box 3 is fixedly installed on the top surface of the workbench 1, two positioning holes 4 are opened on the top surface of the workbench 1, first electric push rods 5 are fixedly installed inside both of the two positioning holes 4, first connecting plates 7 are fixedly installed on the top surfaces of the telescopic rods of the two first electric push rods 5, and one sides of the two first connecting plates 7 are respectively fixedly installed with the placement rack 6;

[0041] A plurality of first positioning columns 8, all of the plurality of first positioning columns 8 are fixedly installed on the inner bottom surface of the water tank 2, connecting sleeves 10 are slidably connected to the outer circumferential wall surfaces of all of the plurality of first positioning columns 8, and one sides of all of the plurality of connecting sleeves 10 are fixedly installed with the placement rack 6;

[0042] A plurality of limiting hoops 11, all of the plurality of limiting hoops 11 are arranged on the top surface of the placement rack 6, a plurality of first mounting plates 12 are fixedly installed on the inner circumferential wall surface of the placement rack 6, the bottom surfaces of all of the plurality of limiting hoops 11 are rotatably connected with fixing plates 13, mounting sleeves 16 are arranged on the top surfaces of all of the plurality of connecting sleeves 10, electromagnets 17 are fixedly installed inside all of the plurality of mounting sleeves 16, second positioning columns 18 are fixedly installed on the bottom surfaces of all of the plurality of mounting sleeves 16 and the bottom surfaces of all of the plurality of fixing plates 13, the second positioning columns 18 respectively penetrate through the connecting sleeves 10 and the first mounting plates 12, and first springs 19 are movably sleeved on the outer circumferential wall surfaces of all of the plurality of second positioning columns 18;

[0043] A fixing component, the fixing component is arranged on the inner circumferential wall surface of the placement rack 6 and is used for fixing the air inlet pipe of the inner tube;

[0044] An inflation assembly is arranged inside the transmission case 3 and is used to inflate the inner tube.

[0045] Among them, the staff places the inner tube to be detected inside the placement rack 6. Then, the staff uses the fixing component to fix the air inlet pipe of the inner tube. After that, the staff rotates multiple limiting hoops 11 to the surface of the inner tube. At this time, the staff uses the electromagnet 17. When the electromagnet 17 is powered on, it will magnetically fix the limiting hoop 11. Then, the staff uses the inflation assembly to inflate the inner tube. During this process, since the inner tube expands when inflated, the inner tube will push the limiting hoop 11 to move upward. Then, the upward movement of the limiting hoop 11 will drive the fixing plate 13 and the mounting sleeve 16 to move upward. At the same time, the first spring 19 will be compressed. At this time, the resilience generated by the first spring 19 will cause the limiting hoop 11 to press down on the inner tube, thereby limiting and fixing the inner tube inside the placement rack 6. After the above steps are completed, the staff uses two first electric push rods 5. When the telescopic rods of the first electric push rods 5 retract, they will drive two first connecting plates 7 and the placement rack 6 to move. Then, the placement rack 6 will enter the water inside the water tank 2. At this time, the staff can judge the airtightness of the inner tube by observing whether bubbles emerge from the surface of the inner tube in the water, so as to achieve the effect of detecting the airtightness of the inner tube. During this process, the staff does not need to manually inflate the inner tube and then press it into the water. Instead, the staff only needs to pick up and place the inner tube, thus achieving the effect of facilitating the staff to batch-detect the airtightness of the inner tube. Embodiment

[0046] This embodiment provides a detection device for the airtightness of an automobile inner tube. In addition to including the technical solutions of the above embodiment, it also has the following technical features. The fixing component includes:

[0047] A second mounting plate 15 is fixedly installed on the inner circumferential wall surface of the placement rack 6. A mounting block 20 is arranged on one side of the second mounting plate 15. Two limiting plates 26 are fixedly installed on one side of the mounting block 20. Two clamping blocks 29 are arranged between the two limiting plates 26. Two guide posts 27 are fixedly installed on one side of each of the two clamping blocks 29. A number of guide posts 27 penetrate through the limiting plates 26, and the outer circumferential wall surfaces of a number of guide posts 27 are movably sleeved with second springs 28.

[0048] Among them, after the staff places the inner tube inside the placement rack 6, the staff presses the air inlet pipe of the inner tube between the two clamping blocks 29. Then, the two clamping blocks 29 will move under extrusion. At the same time, the second spring 28 will be compressed. In this way, the resilience of the second spring 28 will drive the two clamping blocks 29 to clamp and fix the air inlet pipe of the inner tube, thus facilitating subsequent inflation of the inner tube. Embodiment

[0049] This embodiment provides a detection device for the airtightness of an automobile inner tube. In addition to including the technical solutions of the above embodiment, it also has the following technical features. The inflation assembly includes:

[0050] A moving plate 32 is slidably connected inside a transmission box 3. A lead screw 31 is rotatably connected inside the transmission box 3. A drive motor 30 is fixedly installed on the top surface of the transmission box 3. The bottom surface of the drive shaft of the drive motor 30 is fixedly installed with the lead screw 31. A threaded hole 33 is opened on the top surface of the moving plate 32. The threaded hole 33 is threadedly connected with the lead screw 31. One side of the moving plate 32 is slidably connected with an adjusting plate 35. A circular through hole is opened on the top surface of the adjusting plate 35. A plug tube 36 is fixedly sleeved on the inner wall surface of the circular through hole.

[0051] Among them, when the staff needs to inflate the inner tube, the staff installs the air pipe of an external air pump to the outside of the plug tube 36. Then the staff uses the drive motor 30. Then the rotation of the drive shaft of the drive motor 30 will drive the lead screw 31 to rotate. At this time, under the threaded transmission of the lead screw 31 and the threaded hole 33, the moving plate 32 will drive the adjusting plate 35 to move up and down. Then the plug tube 36 at the bottom of the adjusting plate 35 will be inserted into the air inlet pipe of the inner tube and inflate the inner tube, thereby achieving the effect of inflating the inner tube. Embodiment

[0052] This embodiment provides a detection device for the airtightness of an automobile inner tube. In addition to including the technical solutions of the above embodiment, it also has the following technical features. An adjusting hole 21 is opened on one side of the mounting block 20. An adjusting bolt 22 is rotatably connected inside the adjusting hole 21. A threaded groove 23 is opened on one side of the second mounting plate 15. The threaded groove 23 is threadedly connected with the adjusting bolt 22. A second electric push rod 34 is fixedly installed on the top surface of the moving plate 32. A second connecting plate 9 is fixedly installed on the top surface of the adjusting plate 35. One side of the second connecting plate 9 is fixedly installed with the telescopic rod of the second electric push rod 34.

[0053] Among them, the staff can rotate the adjusting bolt 22. Then, under the threaded transmission of the adjusting bolt 22 and the guiding hole 24, the use positions of the two clamping blocks 29 are changed. At the same time, the use position of the adjusting plate 35 is changed through the telescopic rod of the second electric push rod 34 and its position is kept corresponding, so as to facilitate the inflation of inner tubes of different sizes. Embodiment

[0054] This embodiment provides a detection device for the airtightness of an automobile inner tube. In addition to including the technical solutions of the above embodiment, it also has the following technical features. Two guiding holes 24 are opened on one side of the second mounting plate 15. Two second guiding rods 25 are fixedly installed on one side of the mounting block 20. The two second guiding rods 25 are respectively slidably connected with the two guiding holes 24.

[0055] Among them, it is convenient to guide and limit the movement of the mounting block 20. Embodiment

[0056] This embodiment provides a detection device for the air tightness of an automobile inner tube. In addition to including the technical solutions of the above embodiment, it also has the following technical features. Two circular through holes are opened on the top surface of the first mounting plate 12, and two first guide rods 14 are fixedly installed on the bottom surface of the fixed plate 13. The first guide rods 14 are movably sleeved in the circular through holes.

[0057] Among them, it is convenient to guide and limit the movement of the fixed plate 13.

[0058] When the detection device for the air tightness of an automobile inner tube in this embodiment is in use, the staff places the inner tube to be detected into the interior of the placement rack 6. Then, the staff uses the fixing component to fix the air inlet pipe of the inner tube. After that, the staff rotates a plurality of limiting hoops 11 to the surface of the inner tube. At this time, the staff uses the electromagnet 17. Then, when the electromagnet 17 is powered on, it will magnetically fix the limiting hoops 11. After that, the staff uses the inflation component to inflate the inner tube. During this process, since the inner tube expands when inflated, the inner tube will push the limiting hoops 11 to move upward. Then, when the limiting hoops 11 move upward, they will drive the fixed plate 13 and the mounting sleeve 16 to move upward. At the same time, the first spring 19 will be compressed. At this time, the resilience generated by the first spring 19 will cause the limiting hoops 11 to press down on the inner tube, so as to limit and fix the inner tube inside the placement rack 6. After the above steps are completed, the staff uses two first electric push rods 5. Then, when the telescopic rods of the first electric push rods 5 retract, they will drive the two first connecting plates 7 and the placement rack 6 to move. Then, the placement rack 6 will enter the water inside the water tank 2. At this time, the staff can judge the air tightness of the inner tube by observing whether bubbles emerge from the surface of the inner tube in the water, so as to achieve the effect of detecting the air tightness of the inner tube. During this process, the staff does not need to manually inflate the inner tube and then press it into the water. Then, the staff only needs to take and place the inner tube, so as to achieve the effect of facilitating the staff to batch detect the air tightness of the inner tube.

[0059] The above describes the embodiments of the present application in conjunction with the accompanying drawings. Without conflict, the embodiments and the features in the embodiments in the present application can be combined with each other. The present application is not limited to the above specific embodiments. The above specific embodiments are only illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all belong to the protection scope of the present application.

Claims

1. A device for detecting air tightness of automobile inner tubes, characterized in that: include: A workbench (1), wherein a water tank (2) is fixedly installed inside the workbench (1), a placement rack (6) is arranged inside the water tank (2), a transmission box (3) is fixedly installed on the top surface of the workbench (1), two positioning holes (4) are provided on the top surface of the workbench (1), a first electric push rod (5) is fixedly installed inside the two positioning holes (4), a first connecting plate (7) is fixedly installed on the top surfaces of the telescopic rods of the two first electric push rods (5), and one side of the two first connecting plates (7) is fixedly installed on the placement rack (6) respectively; A plurality of first positioning columns (8), each of which is fixedly mounted on the inner bottom surface of the water tank (2), each of which has a connecting sleeve (10) slidably connected to its outer circular wall surface, and each of which has one side fixedly mounted on the placement rack (6); A plurality of limiting hoops (11), wherein the plurality of limiting hoops (11) are arranged on the top surface of the placement rack (6), the inner circular wall surface of the placement rack (6) is fixedly mounted with a plurality of first mounting plates (12), the bottom surfaces of the plurality of limiting hoops (11) are rotatably connected with a fixing plate (13), the top surfaces of the plurality of connecting sleeves (10) are provided with mounting sleeves (16), the interiors of the plurality of mounting sleeves (16) are fixedly mounted with electromagnets (17), the bottom surfaces of the plurality of mounting sleeves (16) and the bottom surfaces of the plurality of fixing plates (13) are fixedly mounted with second positioning columns (18), the second positioning columns (18) respectively penetrate the connecting sleeve (10) and the first mounting plate (12), and the outer circular wall surfaces of the plurality of second positioning columns (18) are movably sleeved with first springs (19); A fixing component, the fixing component is arranged on the inner circular wall surface of the placement frame (6) and is used to fix the air intake pipe of the inner tube; An inflation component is arranged inside the transmission case (3) and is used to inflate the inner tube.

2. The air tightness detection device for automobile inner tube according to claim 1, characterized in that: The fixing assembly comprises a second mounting plate (15), the second mounting plate (15) being fixedly mounted on the inner circular wall surface of the placement rack (6), a mounting block (20) being arranged on one side of the second mounting plate (15), two limiting plates (26) being fixedly mounted on one side of the mounting block (20), two clamping blocks (29) being arranged between the two limiting plates (26), two guide columns (27) being fixedly mounted on one side of the two clamping blocks (29), a plurality of the guide columns (27) all passing through the limiting plates (26), and a second spring (28) being movably sleeved on the outer circular wall surfaces of the plurality of the guide columns (27).

3. The air tightness detection device for automobile inner tube according to claim 2, characterized in that: The inflatable component comprises a movable plate (32), the movable plate (32) being slidably connected to the interior of the transmission box (3), a screw rod (31) being rotatably connected to the interior of the transmission box (3), a driving motor (30) being fixedly mounted on the top surface of the transmission box (3), a bottom surface of a driving shaft of the driving motor (30) being fixedly mounted on the screw rod (31), a threaded hole (33) being provided on the top surface of the movable plate (32), the threaded hole (33) being threadedly connected to the screw rod (31), an adjusting plate (35) being slidably connected to one side of the movable plate (32), a circular through hole being provided on the top surface of the adjusting plate (35), a plug tube (36) being fixedly sleeved on the inner circular wall surface of the circular through hole.

4. The air tightness detection device for automobile inner tube according to claim 3 is characterized in that: An adjustment hole (21) is provided on one side of the mounting block (20), and an adjustment bolt (22) is rotatably connected inside the adjustment hole (21); a threaded groove (23) is provided on one side of the second mounting plate (15), and the threaded groove (23) is threadedly connected to the adjustment bolt (22); a second electric push rod (34) is fixedly mounted on the top surface of the movable plate (32); a second connecting plate (9) is fixedly mounted on the top surface of the adjustment plate (35), and one side of the second connecting plate (9) is fixedly mounted to the telescopic rod of the second electric push rod (34).

5. The air tightness detection device for automobile inner tube according to claim 4, characterized in that: Two guide holes (24) are provided on one side of the second mounting plate (15), and two second guide rods (25) are fixedly mounted on one side of the mounting block (20), and the two second guide rods (25) are slidably connected to the two guide holes (24) respectively.

6. The air tightness detection device for automobile inner tube according to claim 1, characterized in that: The top surface of the first mounting plate (12) is provided with two circular through holes, and the bottom surface of the fixing plate (13) is fixedly mounted with two first guide rods (14), and the first guide rods (14) are movably sleeved with the circular through holes.

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