WO2019053893A1

WO2019053893A1 - Tire inspection apparatus

Info

Publication number: WO2019053893A1
Application number: PCT/JP2017/033570
Authority: WO
Inventors: 孝明伊東; 宮崎　晋一; 雅人北本
Original assignee: 大和製衡株式会社
Priority date: 2017-09-15
Filing date: 2017-09-15
Publication date: 2019-03-21
Also published as: CN111094929B; CN111094929A; JP6804174B2; JPWO2019053893A1

Abstract

This tire inspection apparatus inspects a tire (6) held between an upper rim (2) and lower rim (4) by turning the tire (6) together with the upper rim (2) and lower rim (4) in a state in which the inside of the tire (6) has been supplied with air. The tire inspection apparatus comprises a rotating air supply unit (28, 30, 34) for supplying the inside of the tire (6) held between the upper rim (2) and lower rim (4) with air while causing the air to rotate.

Description

Tire inspection device

The present invention relates to a tire inspection device, and more particularly to measures against dust, for example, rubber scraps, which may be present in a tire when air is supplied to the tire for inspection.

Conventionally, as a tire inspection device, there is a device as disclosed, for example, in Patent Document 1. According to the technique of Patent Document 1, after the tire is held between the upper rim and the lower rim, air is supplied into the tire to inflate the tire, and then the inspection is performed. The air was supplied to the tire through the upper rim and the lower rim, and was penetrated in the radial direction of the communicating pipe in a portion positioned between the upper rim and the lower rim of the communicating pipe in which the air was supplied internally. A plurality of injection ports are provided at predetermined angles, and air is injected from the injection ports into the tire. The communication pipe is formed in a shaft inserted into the upper rim, and the shaft is fitted to the upper rim.

JP, 2013-83549, A

By the way, below the lower rim, there is provided a chuck mechanism for locking the vertical movement of the upper rim to fix the vertical distance between the lower rim and the lower rim. The change in the fixed state of the upper rim and the lower rim by the chuck mechanism affects the measurement accuracy of the load cell provided in the tire inspection device.

Therefore, for example, in order to prevent the occurrence of wear at the contact portion between the shaft and the chuck mechanism, a material having high hardness is used for the shaft, and the shaft is subjected to surface treatment such that the wear does not occur. Furthermore, a lubricant is applied to the shaft contact portion so as not to cause wear or seizing.

However, when air is supplied to the tire, rubber debris in the tire is wound up, for example, when rubber debris intrudes into the contact portion with the shaft of the chuck mechanism, the contact portion is abraded or rubber debris in the contact portion The upper rim may be fixed while biting. As a result, the fixed state of the upper rim may change, which may affect the measurement accuracy. As a cause of the rubber debris invading the chuck mechanism, for example, it is conceivable that the rubber debris intrudes into the chuck mechanism through the gap between the lower rim and the shaft.
Although Patent Document 1 mentioned above is an example in which the shaft fitted to the upper rim is inserted into the chuck mechanism below the lower rim, an example in which the shaft mounted to the lower rim is inserted into the chuck mechanism above the upper rim There is also, in that case, the same.

An object of the present invention is to provide a tire inspection device which prevents rubber debris from entering the chuck mechanism when air is supplied to the tire.

In the tire inspection device according to one aspect of the present invention, the tire is rotated together with the upper rim and the lower rim in a state where air is supplied into the tire held between the upper rim and the lower rim, and the tire is inspected. is there. In supplying air into the tire, the air swirl supply swirls the air in the tire held by the upper rim and the lower rim. This swirling flow of air gradually forms a vortex of air.

In the tire inspection apparatus configured as described above, when air is supplied into the tire, air vortices are generated in the tire, so the vortices of the air become a wall and rubber scraps remaining in the tire are It is considered that the film is prevented from being rolled up above the air vortex, and the staying state is maintained. On the other hand, even if rubber scraps are caught in a vortex of air, the rubber scraps only rotate along the swirling flow of air. As a result, it is possible to appropriately prevent the rubber waste in the tire from intruding into the chuck mechanism due to inflation.

In the tire inspection device according to the above aspect, the air swirl supply unit includes an injection unit that injects air substantially along a tangent direction of a virtual curve virtually drawn in the tire.

In the tire inspection device configured as described above, the air is jetted in the tangential direction of the virtual curve in the tire to generate air swirl in the tire.

Furthermore, a plurality of the injection parts can be spaced apart along the virtual curve. With such a configuration, it is possible to more reliably generate an air vortex.

The injection unit can be provided on the upper rim, the lower rim, or between the upper rim and the lower rim.

Specifically, the air swirl supply portion is formed, for example, through at least one of the upper rim and the lower rim, and has an air passage, and the virtual curve is virtually drawn around the air passage. It can be configured as shown in FIG.

Alternatively, in the air swirl supply unit, a shaft serving as the air passage is inserted between the upper rim and the lower rim, and the shaft is penetrated between the upper rim and the lower rim. The formed branched air passage may be provided, and the virtual curve may be virtually drawn around the branched air passage.

BRIEF DESCRIPTION OF THE DRAWINGS It is a partial abbreviation | omission longitudinal front view of the tire inspection apparatus of the 1st Embodiment of this invention. It is a partially-omission top view of the tire inspection device of FIG. It is a partially enlarged longitudinal elevation view of a tire inspection device of Drawing 1, and a top view of an injection part. It is a partial abbreviation longitudinal front view of a tire inspection device of a 2nd embodiment. It is a partial abbreviation longitudinal front view of a tire inspection device of a 3rd embodiment. It is a perspective view of the injection part used for 4th Embodiment.

A tire inspection apparatus 1 according to a first embodiment of the present invention is shown in FIGS. 1 to 3. In the tire inspection device 1, air is supplied into the tire 6 to inflate the tire 6 in a state where the upper rim 2 and the lower rim 4 shown in FIG. 1 sandwich the tire 6. In this inflated state, the tire 6 is rotated at a predetermined speed to inspect the dynamic balance of the tire 6.

The lower rim 4 is attached to the supporting and rotating device 5, the upper rim 2 is attached to the lifting device shown by a broken line, and with the tire 6 attached to the lower rim 4, the upper rim 2 is lowered by the lifting device, Hold the tire 6.

A through hole 8 is formed at the center of the upper rim 2, and the upper rim shaft 10 is inserted through the through hole 8, and the flange 12 at the head of the through hole 8 is a flat concave (upper portion) of the upper rim 2 Bottom surface 14) and coupled to the concave surface 14 by bolts (not shown). Inside the upper rim shaft 10, an air supply passage 16 is formed along the length direction.

The upper rim shaft 10 passes through a through hole 18 formed at the center of the lower rim 4 and enters the supporting and rotating device 5 attached to the lower portion of the lower rim 4. When the upper rim 2 is lowered by the lifting device, the upper rim shaft 10 is coupled to an air supply (not shown) inside the support and rotation device 5, and the upper rim 2, the lower rim 4 and the tire 6 are integrated. And the rotation given by the support and rotation device 5 to the lower rim 4 is transmitted to the tire 6, the upper rim shaft 10 and the upper rim 2, and the upper rim 2, the lower rim 4 and the tire 6 rotate integrally. Is configured as. A chuck mechanism for fixing the positional relationship between the upper rim 2 and the lower rim 4 in the upper and lower directions is provided in the tire inspection device 1.

That is, as a part of the chuck mechanism, a plurality of grooves 500 are formed on the lower outer peripheral surface of the upper rim shaft 10 at intervals along the length direction, and these grooves 500 are formed as other parts of the chuck mechanism. The four claw blocks 502 are located at predetermined intervals of 90 degrees at predetermined positions around the.

Each claw block 502 is attached to the housing 504 of the support and rotation device 5, and the housing 504 is attached to the lower rim 4. At the upper rim shaft 10 side end of the claw block 502, a claw 506 that can enter the groove 500 is formed. Each claw block 502 is attached to the housing 504 so as to be movable back and forth to the upper rim shaft 10. The end opposite to the upper rim shaft 10 of each claw block 502 protrudes from the housing 504 to the outside.

Guide pins 508 are attached to the projecting portions, and the guide pins 508 are inserted into guide grooves 512 of a guide block 510 disposed outside the housing 504. The guide groove 512 linearly extends from the upper part to the lower part, inclines obliquely downward from the part to the outer side, and then extends linearly to the lower part. When the guide block 510 is moved up and down by the drive mechanism of the guide block 510 (not shown) and the guide pin 508 is guided to the guide groove 512, the claw block 502 moves back and forth and the claw 506 enters the groove 500. I go backwards.

FIG. 1 shows that the claws 506 of the claw block 502 shown on the right side thereof have entered the groove 500, and the claws 506 of the claw block 502 shown on the left side thereof have been retracted from the groove 500. With the claws 506 entering one groove 500, the upper and lower positional relationship between the upper rim 2 and the lower rim 4 is fixed. With the claws 506 retracted from the grooves 500, the fixing of the upper and lower positional relationship between the upper rim 2 and the lower rim 4 is released.

Since the change in the fixed state of the upper rim 2 and the lower rim 4 affects the measurement accuracy, the upper rim shaft 10 has hardness so that wear does not occur at the contact portion between the upper rim shaft 10 and the housing 504 The surface of the upper rim shaft 10 is treated so as not to cause wear. Furthermore, a lubricant is applied to the contact portion between the upper rim shaft 10 and the housing 504 so as to prevent wear and seizing.

There is a minute gap between the lower rim 4 and the upper rim shaft 10 and between the housing 504 and the upper rim shaft 10. If rubber chips intrude into this gap, as described above, the fixed state of the upper rim 2 may change, which may affect the measurement accuracy.

A flange 22 formed at the lower end of the support shaft 20 is coupled to the flange 12 of the upper rim shaft 10 by a bolt not shown, and the support shaft 20 and the upper rim shaft 10 are arranged concentrically. The support shaft 20 is coupled to the lifting device, and the upper rim 2 is raised and lowered together with the upper rim shaft 10 by raising and lowering the support shaft 20.

An annular body 24 is disposed around the flange 12 of the upper rim shaft 10 and is fixed to the concave surface 14 of the upper rim 2 by a bolt (not shown). The annular body 24 has an annular annular bore 26 at its center. The annular bore 26 contacts the outer peripheral surface of the flange 12 of the upper rim shaft 12 to position the annular body 24. The annular body 24 has a substantially flange-like shape, and the recess forms a first air passage 28 with the concave surface 14.

An air communication passage 30 is formed in the flange 12 so that the first air passage 28 communicates with the air supply passage 16 of the upper rim shaft 10. The air communication passage 30 is formed along the radial direction of the flange 12. A plurality of, for example, six air communication passages 30 are provided as shown in FIG. The plurality of air communication passages 30 are disposed around the center of the flange 12 and are disposed, for example, at a predetermined angle, for example, every 60 degrees.

An annular groove 32 is formed on the lower surface of the upper rim 2. The groove 32 has a width from a position corresponding to the outer peripheral surface of the annular body 24 to a position slightly on the upper rim shaft 10 side, and the lower rim 4 side is open. An imaginary curve (here, an imaginary circle) is drawn by the grooves 32. For example, a plurality of, specifically, six injection parts 34 are provided in each groove 32 at predetermined angles, for example, 60 degrees. There is. This virtual circle is located outward of the outer circumferential surface of the upper rim shaft 10.

Here, the virtual curve is a curve virtually drawn in the tire 6, and in the present embodiment, the center (for example, the central axis of the upper rim shaft 10) is used as the curve of this kind, and the upper rim 2 An imaginary circle drawn on the side, the lower rim 4 side, and between the upper rim 2 and the lower rim 4 is used. As a curve of this kind, not only a circular shape but also a closed curve such as an oval shape or a cross-sectional shape of an almond can be considered. Furthermore, within the range where the effects of the present invention can be exhibited ) May be drawn. Moreover, within the range which can exhibit the effect of this invention, the closed curve which does not have a center may be drawn.

Therefore, although it is common to the second to fourth embodiments described later, instead of arranging the injection parts 34 evenly on the virtual circle 38 at equal intervals, within the range where the effects of the present invention can be exhibited, One or more injection parts 34 can be arranged on the above-mentioned open curve or closed curve such as a virtual arc or ellipse.

Each of the injection units 34 is in communication with the first air passage 28, and blows the air supplied from the first air passage 28 into the tire 6 to inflate the tire 6. Here, the air pressure and the air amount of the injection unit 34 are set in advance so as to generate a swirling flow in the tire 6 and to gradually form an air vortex. It is considered that this air vortex is at least a tornado (tornado-like) vortex in which the air flow rolls up from the imaginary circle.

As shown in FIG. 3A in an enlarged manner, in each injection portion 34, a communication hole (second air passage) 36 parallel to the upper rim shaft 10 so as to connect the first air passage 28 and the groove 32. Is formed. The first air passage 28 and the communication hole 36 form an "air passage" in the present invention.

Each communication hole 36 is located on an imaginary circle 38 drawn around the central axis of the upper rim shaft 10 in plan view. The pipe 40 which is a component of the injection part 34 is penetrated by each of these communicating holes 36. As shown in FIG. A close contact state is maintained between the communication hole 36 and the pipe 40 by sealing or the like so that air does not flow between the communication hole 36 and the pipe 40. One end of each of the pipes 40 is located on the communication hole 36 side, and the other end is located in the annular groove 32. The end of the pipe 40 on the side of the communication hole 36 is open and the end on the side of the groove 32 is closed, but a jet hole 42 is formed in the peripheral wall on the side of the groove 32. As shown by the arrows in FIG. 2, these ejection holes 42 are directed along the same tangential direction in different positions of the imaginary circle 38 and in the same direction. Each pipe 40 is attached by various methods such as welding to a fan-shaped flange 46 shown in FIG. 3 (b), and this flange 46 is fixed by a bolt 49 inserted into a long hole 48 formed in the flange 46. It is fixed to the bottom 33 of the groove 32. Air is ejected from these ejection holes 42 at the same speed and flow rate. The air communication passage 30, the first air passage 28, the communication hole 36 and the injection unit 34 constitute an air swirl supply unit.

In the tire inspection device 1, when the tire is held between the upper rim 2 and the lower rim 4 and air is supplied from the air supply source in the supporting and rotating device 5 to the air supply passage 16, the air is supplied to each air communication passage 30, The air is ejected from the ejection holes 42 of the injection unit 34 through the first air passage 28 and the communication hole 36, and the tire 6 is expanded. At this time, the jet holes 42 face the same direction along the tangential direction of the imaginary circle 38 shown in FIG. 2, so that a swirling flow is formed in the tire 6 around the upper rim shaft 10. This swirling flow gradually becomes a vortex of air.

It is considered that the air vortex becomes a wall, and rubber scraps staying in the tire are prevented from being wound up above the air vortex, and the stay state is maintained. On the other hand, even if rubber scraps are caught in a vortex of air, the rubber scraps only rotate along the swirling flow of air. As a result, it is possible to appropriately prevent the rubber waste in the tire from intruding into the chuck mechanism due to inflation.

A tire inspection apparatus 1a according to a second embodiment of the present invention is shown in FIG. In the first embodiment, the injection portion 34 is provided on the upper rim 4 and the annular body 24 is provided around the flange 12 of the upper rim shaft 10. However, in the tire inspection device 1a of the second embodiment, these are removed It is done. On the upper surface side of the lower rim 4, a groove 32 a similar to the annular groove 32 formed on the upper rim 2 of the tire inspection device 1 of the first embodiment is formed. In the tire inspection device 1a of the second embodiment, an annular groove 32a is open to the upper rim 2 side. In the groove 32a, an injection part 34a configured similarly to the injection part 34 of the first embodiment is provided in a state in which the injection part 34 is upside down.

In the tire inspection device 1a according to the second embodiment, as in the tire inspection device 1 according to the first embodiment, the injection portions 34a are positioned on the imaginary circle, and their respective ejection holes are in the tangential direction of the imaginary circle. It is provided along the same direction.

However, in the tire inspection device 1a of the second embodiment, the virtual circle is drawn on the lower rim 4 side, and the injection parts 34a are provided on the virtual circle. Moreover, in the second embodiment, as an air passage that does not affect the vertical movement of the upper rim 2, for example, the pipe 50 penetrates the lower rim 4 at a position outside the outer peripheral surface of the upper rim shaft 10. And is provided linearly toward the injection part 32a. The pipe 50 exits the housing 504 and is connected to an air supply (not shown).

In this second embodiment, not along the upper part of the upper rim shaft 10 but in the lower part, for example, along the tangential direction at different positions of an imaginary circle virtually formed around the pipe 50 for air supply. Air is injected from each of the injection units 34a. It goes without saying that each injection unit 34a may be disposed on a virtual arc also in the second embodiment.

The other configuration is the same as that of the tire inspection device according to the first embodiment, so the detailed description will be omitted.

Also in the tire inspection apparatus 1a configured as above, when the upper rim 2 and the lower rim 4 sandwich the tire and supply air from the air supply source in the support rotation device to the air supply passage 16, the air is The pressure is supplied to the injection unit 34 a via the nozzle 50 and injected to inflate the tire 6. At this time, since the jet holes are directed in the same direction along the tangential direction of the imaginary circle, a swirling flow of air is formed in the tire 6. This swirling flow gradually becomes an air vortex.

It is considered that the air vortex becomes a wall, and the rubber waste present in the tire is prevented from being wound up above the air vortex, and the rubber waste staying in the tire maintains a stagnant state. . On the other hand, even if rubber scraps are caught in a vortex of air, the rubber scraps only rotate along the swirling flow of air. As a result, it is possible to appropriately prevent the rubber waste in the tire from intruding into the chuck mechanism due to inflation.

Further, in the second embodiment, the lower rim 4 is penetrated through the pipe 50 as the air supply passage at a position outside the outer peripheral surface of the upper rim shaft 10 from the air supply source (not shown), and the injection portion Since it is provided linearly toward 32a, a pipe serving as an air flow path which penetrates the upper rim shaft 12 and traverses the inside of the tire 6 and communicates with the air supply passage 18 of the upper rim shaft 10 may be provided. However, when adjusting the chuck mechanism to adjust the upper and lower positions of the upper rim 2, the pipe 50 is not caught on the lower rim 4 and the adjustment of the upper and lower positions of the upper rim 2 is not hindered.

A tire inspection device 1b of a third embodiment is shown in FIG. In the first and second embodiments, the injection parts 34 and 34a are provided on the upper rim 2 or the lower rim 4, but in the tire inspection device 1b of the third embodiment, the upper rim 2 and the lower rim of the upper rim shaft 10 In a portion positioned between the two, an injection unit 34 b is provided. In this embodiment, a virtual circle is drawn between the upper rim 2 and the lower rim 4, and the injection portion 34b is located on the virtual circle. In the third embodiment, as in the first embodiment, virtual open curves or closed curves may be drawn, and even if one or more injection parts 34b are provided on these open curves or closed curves. Good.

In the third embodiment, a plurality of injection parts 34b are located at different positions on a virtual circle drawn about the central axis of the upper rim shaft 10, and their respective ejection holes 42a are tangents at different positions of the virtual circle. It is provided in the same direction along the direction. Each of these injection parts 34b penetrates the air supply passage 16 in the upper rim shaft 10 and bends the tip of the pipe 54 projected to the tire 6 side to the lower rim 4 side to make the injection hole 42a a first embodiment. It is formed similarly to the ejection hole 42 of a form. The other configuration is the same as that of the tire inspection device 1 of the first embodiment, and thus the detailed description will be omitted.

Also in the tire inspection apparatus 1b configured as above, when the upper rim 2 and the lower rim 4 sandwich the tire and air is supplied from the air supply source in the support rotation device to the air supply passage 16, the air is It is supplied to each injection part 34b via 54 and jetted out to inflate the tire 6. At this time, the jet holes 42 a face the same direction along the tangential direction at different positions of the imaginary circle, so that a swirling flow of air is formed in the tire 6. The swirling flow is considered to gradually become a vortex of tornado-like air.

The injection part 34c of the tire inspection apparatus of 4th Embodiment is shown in FIG. The injection portion 34c has a jet hole 42b formed on the side wall near the end of the square pipe, and an inclined wall 56 is provided inside the pipe so as to face the jet hole 42b. The other configuration is the same as any of the first to third embodiments.

Also by providing the inclined wall 56 in this manner, air can be jetted well in the tangential direction of the imaginary circle. Of course, it is also possible to provide an inclined wall inside using a circular pipe.

In the first to third embodiments, the jet holes 42, 42a, 42b are arranged to face the tangential direction of the imaginary circle, but may be arranged offset from the tangential direction. For example, the ejection holes 42, 42a, 42b may be arranged offset to the upper rim shaft 10 side or the tire 6 side with respect to the tangential direction, for example, disposed about 30 degrees offset to the upper rim shaft 10 side or the tire 6 side You can also

In the first to third embodiments, the number of the

injection units

34, 34a, 34b is six. However, the number of the

injection units

34, 34a, 34b is not limited to six. Also, in the first to third embodiments, the

injection parts

34, 34a, 34b are provided along each tangential direction of one virtual circle, but virtual curves (virtual open curves, closed curves, etc.) are concentrically formed It is also possible to provide at least one each in the tangential direction of each virtual curve.

In the first embodiment, the air passage is formed in the annular body 24. However, the air passage may be removed, and for example, the air communication passage 30 and the pipe 40 of the injection unit 34 may be connected by a pipe. Similarly, in the second embodiment, the air supply source (not shown) and the injection unit 34a are connected by the pipe 50, but the lower rim 4 has the same configuration as the air communication passage 30 as in the first embodiment. The air communication passage and the air passage (the first air passage 28 and the communication hole 36) may be formed to connect the air supply passage 16 and the injection portion 34a.

As described above, when the second embodiment is the same air supply path as the first embodiment, it is different from the case where a pipe which penetrates the shaft and serves as an air flow path crossing the inside of the tire 6 is provided. When adjusting the chuck mechanism to adjust the upper and lower positions of the upper rim, the adjustment of the upper and lower positions thereof does not occur because the pipe is not caught by the lower rim.

In the first to third embodiments, the virtual circle 38 is drawn about the central axis of the upper rim shaft 10, but if it generates a swirling flow and is within a range where air vortices can be formed in the tire Alternatively, it may be a virtual circle centered on a position shifted in the horizontal direction from the central axis of the upper rim shaft 10.

The configuration of the air flow passage in the present invention is not limited to the examples of the first to third embodiments. Any configuration may be used as long as the air can be supplied from outside the tire 6 to the injection parts 34a to 34c in the tire 6. For example, in the first to third embodiments, the air flow passage opens in the opposing area between the upper rim 2 and the lower rim 4, but the invention is not particularly limited thereto. Although this depends on the places where the injection parts 34a to 34c are provided, there may be a special case in which these injection parts are installed on the outer peripheral surface of the upper rim 2 or the lower rim 4 outside. In such a case, the air flow path may be finally opened in the direction of the injection portions 34a to 34c, so it is not particularly necessary to open in the opposite area.

Further, the structure of the air flow path is not limited to those exemplified in the first to third embodiments, and for example, one or more of the air paths having a plurality of branch flow paths from the tip of the main air flow path The upper rim 2 or the lower rim 4 may be penetrated from the outside of 6 and the branch flow paths may be opened in the direction of the injection portions 34a to 34c. In short, it is sufficient if the swirling flow can be formed by the injection parts 34a to 34c.

Alternatively, as in the third embodiment (see FIG. 5), instead of forming the air flow passage from the air supply passage 18 of the upper rim shaft 12 to be branched, an air supply not having the function of the upper rim shaft 12 A dedicated member may be provided without passing through the upper rim 2 or the lower rim 4 and opened in the direction of the jet parts 34a to 34c.

Furthermore, although the diameter of the imaginary circle 38 is also drawn to be approximately the same as or smaller than the diameter of the upper rim 2 or the lower rim 4 in the first to third embodiments, it affects the operation and effect of the present invention If not, it may be larger than the diameter of the upper rim 2 or the lower rim 4.

In the first to third embodiments of the present invention, since the air vortex is like a tornado as if the air is rolled up above the imaginary circle, rubber scraps existing below the imaginary circle (for example, tires) It is particularly useful for dealing with rubber scraps below the imaginary circle, since the bottom accumulations) are blocked by the air vortex and do not roll up in the tire 6.

Claims

In a tire inspection device for rotating and inspecting a tire,
An air swirl supply portion for supplying the air while swirling is provided in the tire held by the upper rim and the lower rim.
The tire inspection apparatus according to claim 1, wherein the air swirl supply unit includes an injection unit that injects the air substantially along a tangent direction of an imaginary curve virtually drawn in the tire.
The tire inspection device according to any one of claims 1 to 3, wherein the virtual curve is a virtual circle.
The tire inspection device according to claim 2 or 3, wherein a plurality of the injection units are arranged at intervals along the virtual curve.
The tire inspection device according to any one of claims 2 to 4, wherein the injection unit is provided on the upper rim.
The tire inspection device according to any one of claims 2 to 4, wherein the injection unit is provided on the lower rim.
The tire inspection device according to any one of claims 2 to 4, wherein the injection unit is provided between the upper rim and the lower rim.
The tire inspection device according to any one of claims 2 to 6, wherein the air swirl supply unit has an air passage formed through at least one of the upper rim and the lower rim, and the virtual A tire inspection system in which a curve is virtually drawn around the air passage.
The tire inspection device according to claim 7, wherein a shaft which doubles as the air passage is inserted between the upper rim and the lower rim, and a shaft is inserted between the upper rim and the lower rim. There is a branch air passage formed through it,
The tire inspection device in which the virtual curve is virtually drawn around the branch air passage.