JP6323935B2 - Tire testing apparatus and tire testing method - Google Patents

Description

  The present invention relates to a tire testing apparatus and a tire testing method.

2. Description of the Related Art In recent years, in a tire test method for testing a tire disposed inside a test chamber whose room temperature is set to 0 ° C. or less against a pressing portion disposed inside the test chamber, the tire pressing portion When pressing against the tire, it is desired to adjust the load applied to the tire from the pressing portion, or the slip angle or camber angle with respect to the pressing portion of the tire.
As a tire testing apparatus used in this type of tire testing method, for example, as shown in Patent Document 1 below, a test load loading unit that applies a load to a tire when the tire is pressed against the pressing unit includes a test chamber. A configuration arranged inside is known. The test load load unit applies a load from the pressing unit to the tire by advancing a carriage equipped with a tire support unit that supports the tire toward the pressing unit and pressing the cart against the pressing unit. .

Japanese Patent No. 4076380

However, in the conventional tire test apparatus, the load applied to the tire is accurately determined because the test load load unit sets the load applied to the tire by advancing the carriage by the weight load. There is a problem that it is difficult to set well and it is difficult to test the tire with high accuracy.
Therefore, it is conceivable that the test load load unit is provided with a drive unit instead of a weight body, and the test load load unit is configured to change the load applied to the tire by operating the drive unit. When the room temperature of the test chamber was set to 0 ° C. or less, it was difficult to operate the drive unit with high accuracy, and even in this case, it was difficult to test the tire with high accuracy.

  This invention is made | formed in view of the situation mentioned above, The objective is to provide the tire testing apparatus which can test a tire with high precision.

In order to solve the above problems, the present invention proposes the following means.
The tire test apparatus according to the present invention is disposed inside a test chamber capable of setting the room temperature to 0 ° C. or less, and is disposed within the test chamber, a tire support portion that supports a tire, and the tire support portion. A pressing portion to which the tire supported by the driving portion is pressed, a driving portion disposed outside the test chamber, and an extension extending from the outside to the inside of the testing chamber to connect the driving portion and the tire supporting portion. And a link member rotatably supported about a rotation axis disposed outside the test chamber, the link members extending in a direction perpendicular to the vertical direction and perpendicular to each other. An upper link member and a lower link member that are shifted to each other, and when the link member is rotated around each rotation axis, the tire support portion is moved in the vertical direction and supported by the tire support portion. Tire is pressed against the pressing portion, the driving portion, the push to the link member by moving the tire support unit is rotated around the rotation axis, a tire which is supported by the tire supporting portion The load applied from the contact portion or the slip angle or the camber angle with respect to the pressing portion of the tire is changed . In a state where the room temperature of the test chamber is set to −50 ° C., the tire supported by the tire support portion may be pressed against the pressing portion.

According to this invention, the drive unit rotates the link member around the rotation axis and moves the tire support unit, whereby the load applied to the tire supported by the tire support unit from the pressing unit, or Since it is configured to change the slip angle or the camber angle with respect to the pressing portion of the tire, it is more accurate than the case where the aforementioned load, slip angle or camber angle is changed based on, for example, the weight load. Can change well.
In addition, since the drive unit is disposed outside the test chamber, the drive unit can be operated with high accuracy even when the room temperature of the test chamber is 0 ° C. or lower.
From the above, the tire can be tested with high accuracy.

  In addition, when the tire supported by the tire support portion is pressed against the pressing portion in a state where the room temperature of the test chamber is 0 ° C. or less, the tire is used while continuously running or stopped. Also good.

In this case, when the tire supported by the tire support portion is pressed against the pressing portion, the tire is kept running, so that the performance of the tire in a temperature environment of 0 ° C. or less is tested or the tire is kept stopped. Thus, it is possible to test a flat spot generated when the tire is stopped in a temperature environment of 0 ° C. or less.
By the way, in the conventional tire testing apparatus, when the tire supported by the tire support portion is pressed against the pressing portion, the tire is kept running or stopped while the load applied to the tire is kept equal. Continuously, when the carriage is held at the same position for a long period of time, the carriage becomes difficult to move thereafter, and it becomes difficult to change the load smoothly.
However, in the tire test apparatus, since the link member is supported so as to be rotatable around the rotation axis, the link member can be smoothly moved even after the link member is held at the same position for a long time. It is easy to move. Therefore, when the tire supported by the tire support portion is pressed against the pressing portion, the tire is kept running or stopped in the state where the load, slip angle or camber angle is maintained equal. However, the load, slip angle or camber angle can then be changed smoothly, and the tire can be efficiently tested.

  In addition, a rotation support portion that supports the link member rotatably around the rotation axis may be disposed outside the test chamber.

  In this case, since the rotation support portion is arranged outside the test chamber, the rotation support portion is hardly affected by the room temperature of the test chamber even when the room temperature of the test chamber is 0 ° C. or less. The tire can be smoothly rotated around the rotation axis, and the tire can be tested with higher accuracy.

  In addition, a test drum in which a part of the outer peripheral surface projects into the inside of the test chamber through a projecting opening formed in a wall that defines the test chamber is disposed outside the test chamber, The abutting portion is constituted by a portion of the outer peripheral surface of the test drum that protrudes into the inside of the test chamber through the protruding opening, and the test drum is provided by a drum support portion disposed outside the test chamber. It may be supported so as to be rotatable around the drum axis.

  In this case, since the drum support portion is arranged outside the test chamber, the drum support portion is hardly affected by the room temperature of the test chamber even if the room temperature of the test chamber is 0 ° C. or less. The tire can be smoothly rotated around the drum axis, and the tire can be tested with higher accuracy.

  In the tire test method according to the present invention, the tire test apparatus is used to press the tire supported by the tire support portion against the pressing portion in a state where the room temperature of the test chamber is 0 ° C. or less. The tire test method is characterized in that when the tire supported by the tire support portion is pressed against the pressing portion, the tire is continuously run or stopped.

According to the present invention, when the tire supported by the tire support portion is pressed against the pressing portion, the tire is kept running to test the performance of the tire in a temperature environment of 0 ° C. or lower, or By continuing to stop, it is possible to test a flat spot generated when the tire stops in a temperature environment of 0 ° C. or lower.
By the way, in the tire test apparatus used in the conventional tire test method, when the tire supported by the tire support portion is pressed against the pressing portion, the tire is maintained in the state where the load applied to the tire is maintained at the same level. If the carriage is kept running or stopped and the carriage is held at the same position for a long period of time, then the carriage becomes difficult to move and it is difficult to change the load smoothly.
However, in the tire test method, the tire test apparatus is used, and the link member is supported so as to be rotatable around the rotation axis. Therefore, after the link member is held at the same position for a long period of time. Even if it exists, it becomes easy to move a link member smoothly. Therefore, when the tire supported by the tire support portion is pressed against the pressing portion, the tire is kept running or stopped in the state where the load, slip angle or camber angle is maintained equal. However, the load, slip angle or camber angle can be changed smoothly thereafter, and the tire can be efficiently tested.

  According to the present invention, a tire can be tested with high accuracy.

It is a fragmentary longitudinal cross-sectional view of the tire testing apparatus which concerns on one Embodiment of this invention. FIG. 2 is a partial cross-sectional view of a main part of the tire testing apparatus shown in FIG. 1. It is a fragmentary longitudinal cross-sectional view of the tire testing apparatus shown in FIG.

Hereinafter, a tire testing apparatus according to an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the tire test apparatus 10 is disposed inside a test chamber 11 that can set the room temperature to 0 ° C. or less, and is disposed inside the test chamber 11 and a tire support portion 12 that supports the tire T. A pressing portion 13 that is provided and pressed against a tire T supported by the tire support portion 12; a driving portion 14 disposed outside the test chamber 11; and a drive that extends from the outside of the test chamber 11 to the inside. In addition to connecting the portion 14 and the tire support portion 12, there are provided link members 15 and 16 that are rotatably supported around the rotation axes O 1 and O 2.

  The test chamber 11 is disposed inside an outer chamber 18 that is partitioned from the outside by an outer partition wall portion 17 disposed on a foundation B on which the tire testing apparatus 10 is installed. A portion of the base B located inside the outer chamber 18 is formed with a concave portion 19 having a rectangular shape in a vertical cross-sectional view along the vertical direction D1 and a drum axis O3 direction described later. Above, a thermal heater B1 that suppresses freezing of the foundation B is laid. An inner chamber 21 that is partitioned from the interior of the outer chamber 18 by an inner partition wall portion 20 is provided on the thermal heater B1. In the test chamber 11, the interior of the inner chamber 21 is partitioned by a partition wall portion (wall portion defining the test chamber) 22. In the illustrated example, the partition wall 22 divides the inner chamber 21 into two spaces in the vertical direction D1, and the test chamber 11 is a space located on the upper side of these two spaces. The room temperature of each of the test chamber 11 and the outer chamber 18 is adjusted by air conditioning means (not shown).

Of the two spaces formed by dividing the inner chamber 21, the lower space is a drum storage chamber 24 in which the test drum 23 that constitutes the pressing portion 13 is stored. In the illustrated example, a support body 22 a that supports the partition wall portion 22 is also disposed in the drum storage chamber 24.
The test drum 23 is housed in the drum housing chamber 24 so that a part of the outer peripheral surface projects into the test chamber 11 through a projecting opening 25 formed in the partition wall 22. The pressing portion 13 is formed by a portion of the surface that protrudes into the test chamber 11 through the protruding opening 25.

  The test drum 23 is supported by a drum support portion 26 arranged outside the test chamber 11 so as to be rotatable around the drum axis O3. In the present embodiment, the test drum 23 is provided with a rod-shaped drum power transmission portion 28 that protrudes coaxially with the drum shaft O3 from a drum drive mechanism 27 disposed outside the outer chamber 18. The drum support unit 26 supports the test drum 23 via the drum power transmission unit 28.

  A pair of drum support portions 26 are arranged on the foundation B via a thermal heater B1 so as to sandwich the test drum 23 in the drum axis O3 direction. Of the pair of drum support portions 26, the drum support portion 26 extends in the drum axis O3 direction. One drum support portion 26 located on one side, which is the drum drive mechanism 27 side, is disposed outside the drum storage chamber 24, and the other drum support portion located on the other side opposite to the one side. 26 is disposed inside the drum storage chamber 24. In the illustrated example, the one drum support portion 26 is disposed in a hollow portion 29 in which a portion of the inner partition wall portion 20 that defines the drum storage chamber 24 is recessed toward the other side. ing.

  Above the drum power transmission portion 28, a rotation support portion 30 is provided that supports the link members 15 and 16 so as to be rotatable around the rotation axes O1 and O2. The rotation support portion 30 is disposed outside the test chamber 11 and inside the outer chamber 18. In the example shown in the drawing, the one side of the portion defining the test chamber 11 in the inner partition wall portion 20. Is disposed with a gap in the direction of the drum axis O3 between the one side portion (the wall portion defining the test chamber) 31 facing the surface. The rotation support portion 30 extends in the vertical direction D1, and the lower end portion of the rotation support portion 30 is connected to the partition wall portion 22 and from the one side portion 31 of the inner partition wall portion 20 to the one side. It is fixed to the protruding fixing part 32.

  A plurality of link members 15 and 16 are provided and are formed in a bar shape having the same shape and the same size. In the present embodiment, the link members 15 and 16 include an upper link member 15 and a lower link member 16 that extend in the drum axis O3 direction and are shifted in the vertical direction D1. These link members 15 and 16 extend in parallel with each other, and the positions in the orthogonal direction D2 perpendicular to both the vertical direction D1 and the drum axis O3 direction and the positions in the drum axis O3 direction are the same. It has become. Each link member 15, 16 is inserted through an insertion window 33 formed in the one side portion 31 of the inner partition wall portion 20, and one end portion of the link member 15, 16 positioned on the one side is connected to the test chamber. 11, and the other end of the link members 15, 16 located on the other side is located inside the test chamber 11.

  Further, as shown in FIG. 2, two upper link members 15 and two lower link members 16 are arranged with the rotation support portion 30 sandwiched in the orthogonal direction D2. The upper link members 15 and the lower link members 16 sandwiching the rotation support portion 30 are parallel to each other, and the respective positions in the drum axis O3 direction and the vertical direction D1 are equal to each other. The positions of the central part in the direction of the drum axis O3 and the rotation support part 30 in 15, 16 are equal to each other in the direction of the drum axis O3.

  And the said rotating shaft O1 of the both upper link member 15 is located on the common axis | shaft extended in the said orthogonal direction D2 through the center part and the rotation support part 30 of the both upper link member 15, and both lower link members The 16 rotation shafts O2 are positioned on a common shaft that extends in the orthogonal direction D2 through the center portion of the lower link members 16 and the rotation support portion 30. The rotation axes O1 and O2 of the upper link member 15 and the lower link member 16 extend in parallel with each other, and the positions in the direction of the drum axis O3 are equal to each other.

Further, the link members 15 and 16 are passed through an insertion window 33 between the inside and the outside of the test chamber 11 by contacting the first seal portion 34 provided on the one side portion 31 of the inner partition wall portion 20. A second seal portion 35 that blocks communication is provided.
The first seal portion 34 is formed separately from the one side portion 31 of the inner partition wall portion 20 by, for example, an elastic material, and is formed in an annular shape coaxial with the insertion window 33 in the illustrated example. It arrange | positions inside the test chamber 11, and is being fixed to the opening peripheral part of the penetration window 33 in the said one side part 31. FIG.

  The second seal portion 35 is disposed so as to close the first seal portion 34 from the other side with respect to the first seal portion 34. In the present embodiment, the second seal portion 35 is formed in a plate shape whose front and back surfaces extend perpendicular to the direction of the drum axis O3, and the outer peripheral edge portion of the second seal portion 35 is the first over the entire circumference. Link members 15 and 16 are provided in the center portion of the second seal portion 35 located inside the outer peripheral edge portion in the direction of the drum shaft O3 while slidably contacting the first seal portion 34. .

  The tire support portion 12 supports the tire T so as to be rotatable around the support axis O4. The support shaft O4 extends in the direction of the drum shaft O3. In this embodiment, the support shaft O4 extends in parallel to the drum shaft O3, and the position in the orthogonal direction D2 is equivalent to the drum shaft O3. ing. The tire support 12 includes a connecting portion 36 connected to the link members 15 and 16, a mounting portion 37 on which the tire T is externally mounted, and the mounting portion 37 is fixed to the connecting portion 36 and the mounting portion 37 rotates around the support shaft O4. And a main body 38 that can be arranged.

  The mounting portion 37 is located above the pressing portion 13, and the mounting portion 37 has a portion defining the test chamber 11 in the inner partition wall portion 20 on the other side portion facing the other side. The tire T is attached and detached through an opening / closing port 39 formed to be openable and closable. The tire shaft of the tire T mounted on the mounting portion 37 coincides with the support shaft O4.

  As shown in FIG. 2, the connecting portion 36 is sandwiched between the other end portions of the upper link members 15 and between the other end portions of the lower link members 16. The two first pin members 40, 41 that are formed and extend in the orthogonal direction D2 are connected to the other end portions of the upper link members 15 and the other end portions of the lower link members 16, respectively. Yes. As shown in FIG. 1, the first pin members 40, 41 are inserted into upper first insertion holes formed coaxially with the other end portions of the upper link members 15 and the connecting portions 36, respectively. 1 pin member 40, and the lower 1st pin member 41 inserted integrally in the lower 1st penetration hole formed coaxially in each other end of both lower link members 16, and each connection part 36, respectively. .

In the present embodiment, the drive unit 14 rotates the link members 15 and 16 around the rotation axes O1 and O2 to move the tire support unit 12, thereby causing the tire T supported by the tire support unit 12 to move to the tire T. It is comprised so that the load provided from the said pressing part 13 may be changed.
The drive unit 14 is disposed above an intermediate portion located between the drum drive mechanism 27 and the test drum 23 in the drum power transmission unit 28. In the illustrated example, the intermediate unit of the drum power transmission unit 28 is used as an intermediate unit. It is fixed on a fixed leg 44 straddling the orthogonal direction D2.

  The drive unit 14 is advanced and retracted by a fluid pressure source 45 disposed outside the outer chamber 18, a cylinder unit 46 to which a fluid is supplied from the fluid pressure source 45, and a fluid pressure of the fluid supplied to the cylinder unit 46. The drive unit 14 may be, for example, a hydraulic cylinder or an air cylinder. The cylinder portion 46 is disposed on the fixed leg portion 44. The rod part 47 can advance and retreat in the vertical direction D1 upward from the main body part 38.

  The distal end portion of the rod portion 47 is connected to the one end portion of the link members 15 and 16 via the link power transmission portion 48. The link power transmission portion 48 includes a rod connecting portion 49 connected to the tip portion of the rod portion 47 and a link connecting portion 50 connected to one end portions of the link members 15 and 16 extending in the orthogonal direction D2. The second pin members 51 are connected to each other.

  The rod connecting portion 49 extends in the vertical direction D1, and the lower end portion of the rod connecting portion 49 is formed by a pair of mounting portions 52 erected on the tip end portion of the rod portion 47 with a gap in the orthogonal direction D2. It is located between and is connected to both attachment portions 52 by a third pin member 53 extending in the orthogonal direction D2. The third pin member 53 is integrally inserted into a third insertion hole formed coaxially with the lower end portion of the rod connecting portion 49 and both the attachment portions 52.

  The size of the link connecting portion 50 along the vertical direction D1 gradually increases from the one side toward the other side, and the link connecting portion 50 is a side view as viewed from the orthogonal direction D2. One end located on one side has a triangular shape projecting on the one side. As shown in FIG. 2, the link connecting portion 50 is disposed at an interval in the orthogonal direction D2 so that the one end portion sandwiches the upper end portion of the rod connecting portion 49 in the orthogonal direction D2. One end of the portion 50 and the upper end of the rod connecting portion 49 are connected by the second pin member 51. The second pin member 51 is integrally inserted through a second insertion hole formed coaxially at one end of the link connecting portion 50 and the upper end of the rod connecting portion 49.

  Moreover, the other end part located in the said other side in the link connection part 50 is respectively between the said one end parts of the upper link members 15 and between the said one end parts of the lower link members 16. It is sandwiched and connected to one end of both upper link members 15 and one end of both lower link members 16 by two fourth pin members 56, 57 extending in the orthogonal direction D2. As shown in FIG. 1, the fourth pin members 56, 57 are integrated with upper fourth insertion holes formed coaxially at the respective one end portions of the upper link members 15 and the respective other end portions of the link connecting portions 50. The upper fourth pin member 56 inserted into the lower link member 16 and the lower fourth insertion holes formed coaxially at the one end portions of the lower link members 16 and the other end portions of the link connection portions 50 are integrally inserted. A lower fourth pin member 57.

  Next, using the tire test apparatus 10 configured as described above, the test is performed by pressing the tire T supported by the tire support portion 12 against the pressing portion 13 while the room temperature of the test chamber 11 is 0 ° C. or less. The tire test method to perform is demonstrated.

First, the tire T is supported by the tire support 12 and the room temperatures of the outer chamber 18 and the test chamber 11 are set to desired temperatures, respectively. At this time, for example, the room temperature of the outer chamber 18 is set to about 24 ± 3 ° C., and the room temperature of the test chamber 11 is set to about −50 ° C.
Further, the drum driving mechanism 27 is operated to rotate the test drum 23 around the drum axis O3.

  Thereafter, as shown in FIG. 3, when the fluid is supplied from the fluid pressure source 45 of the drive unit 14 to the cylinder unit 46 and the drive unit 14 is operated so that the rod unit 47 is raised, the link power transmission unit 48 The rod connecting portion 49 moves upward while moving its upper end to the other side, and the rod portion 47 lifts the one end portion of each link member 15, 16 via the rod connecting portion 49 and the link connecting portion 50. As a result, the link members 15 and 16 are rotated around the rotation axes O1 and O2.

Then, while the second seal portion 35 slides on the first seal portion 34 and the communication between the test chamber 11 and the outside through the insertion window 33 is maintained, the tire support portion 12 is supported by the tire support portion 12. In a state where the shaft O4 and the drum shaft O3 are maintained parallel to each other, the tire T that is lowered together with the other end portions of the link members 15 and 16 and supported by the tire support portion 12 is pressed against the pressing portion 13. Thus, a desired load is applied to the tire T from the pressing portion 13.
The load applied to the tire T from the pressing portion 13 can be controlled by, for example, a load cell for tire load control (not shown).

  In this embodiment, when the tire T supported by the tire support portion 12 is pressed against the pressing portion 13 as described above, the test drum 23 is continuously rotated around the drum axis O3, so that the tire T is Keep running. Thereby, the performance of the tire T in a temperature environment of 0 ° C. or less, for example, the running performance and the durability performance are tested.

As described above, according to the tire testing apparatus 10 according to the present embodiment, the drive unit 14 rotates the link members 15 and 16 around the rotation axes O1 and O2 and moves the tire support unit 12. The load applied from the pressing portion 13 to the tire T supported by the tire support portion 12 is changed, so that the load is changed based on, for example, the weight load. Can be changed with high accuracy.
In addition, since the drive unit 14 is disposed outside the test chamber 11, the drive unit 14 can be accurately operated even when the room temperature of the test chamber 11 is 0 ° C. or less.
From the above, the tire T can be tested with high accuracy.

Moreover, since the rotation support part 30 is arrange | positioned outside the test room 11, even if the room temperature of the test room 11 is 0 degrees C or less, the rotation support part 30 is hard to be influenced by the room temperature of the test room 11. The link members 15 and 16 can be smoothly rotated around the rotation axes O1 and O2, and the tire T can be tested with higher accuracy.
Further, since the drum support portion 26 is disposed outside the test chamber 11, the drum support portion 26 is hardly affected by the room temperature of the test chamber 11 even when the room temperature of the test chamber 11 is 0 ° C. or less. The test drum 23 can be smoothly rotated around the drum axis O3, and the tire T can be tested with higher accuracy.

By the way, in the tire test apparatus used in the conventional tire test method, when the tire supported by the tire support portion is pressed against the pressing portion, the tire is maintained in the state where the load applied to the tire is maintained at the same level. If the carriage is kept running and held at the same position for a long period of time, then the carriage becomes difficult to move and it is difficult to change the load smoothly.
However, in the tire test apparatus 10 and the tire test method according to the present embodiment, the link members 15 and 16 are supported so as to be rotatable around the rotation axes O1 and O2, and therefore the link members 15 and 16 are long-term. Even after being held at the same position, the link members 15 and 16 are easily moved smoothly. Therefore, when the tire T supported by the tire support portion 12 is pressed against the pressing portion 13, even if the tire T continues to run with the above-described load maintained equivalently, The load can be changed smoothly, and the tire T can be efficiently tested.

The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
For example, the tire test apparatus 10 may further include a mechanism for applying a driving force or a braking force.

Further, the thermal heater B1, the support 22a, the first seal portion 34, and the second seal portion 35 may be omitted.
Furthermore, in the said embodiment, although the link power transmission part 48 shall be provided with the rod connection part 49 and the link connection part 50, it is not restricted to this, For example, there is no rod connection part 49, a rod part The front end portion of 47 may be directly connected to the one end portion of the link connecting portion 50.

In the above embodiment, a plurality of link members 15 and 16 are provided. However, the present invention is not limited to this, and one link member may be provided.
Further, the drive unit 14 is supported by the tire support unit 12 by rotating the link members 15 and 16 about the rotation axes O1 and O2 and moving the tire support unit 12 about the rotation axes O1 and O2. As long as it is comprised so that the load provided to the tire T from the pressing part 13 may be changed, it is not restricted to what was shown to the said embodiment.

  The drive unit 14 may be configured to change the slip angle or the camber angle of the tire T with respect to the pressing unit 13 instead of changing the load. Even in these cases, the slip angle or the camber angle can be accurately changed, and the tire T can be tested with high accuracy. In addition, when changing a slip angle and a camber angle, it is not based on a drive part, The drive mechanism different from a drive part may be incorporated in a tire support part, and you may change with this drive mechanism.

In the above-described embodiment, the test drum 23 is stored in the drum storage chamber 24. However, the test drum 23 is not limited thereto, and may be stored in the test chamber 11, for example.
Furthermore, in the said embodiment, although the drum support part 26 shall be arrange | positioned outside the test chamber 11, it is not restricted to this, For example, you may accommodate in the inside of the test chamber 11.
Furthermore, in the above-described embodiment, the rotation support unit 30 is disposed outside the test chamber 11, but is not limited thereto, and may be accommodated inside the test chamber 11, for example.

In the above embodiment, when the tire T supported by the tire support portion 12 is pressed against the pressing portion 13, the tire T is continuously driven. However, the present invention is not limited to this. For example, the tire T is stopped. You may continue. In this case, a flat spot generated when the tire T is stopped in a temperature environment of 0 ° C. or lower can be tested.
Furthermore, the tire T may be stopped and then run.

  In addition, it is possible to appropriately replace the constituent elements in the embodiment with known constituent elements without departing from the spirit of the present invention, and the above-described modified examples may be appropriately combined.

DESCRIPTION OF SYMBOLS 10 Tire test apparatus 11 Test chamber 12 Tire support part 13 Pushing part 14 Drive part 15, 16 Link member 30 Rotation support part O1, O2 Rotating shaft T Tire

Claims (5)

A tire support that is disposed inside a test chamber capable of setting the room temperature to 0 ° C. or less and supports the tire;
A pressing portion disposed inside the test chamber and pressed against a tire supported by the tire supporting portion;
A drive unit disposed outside the test chamber;
A link member that extends from the outside of the test chamber to the inside, connects the drive unit and the tire support unit, and is rotatably supported around a rotation axis disposed outside the test chamber. ,
The link member includes an upper link member and a lower link member that extend in a direction orthogonal to the vertical direction and are shifted in the vertical direction from each other,
By rotating the link member around each rotation axis, the tire support portion is moved in the vertical direction, and the tire supported by the tire support portion is pressed against the pressing portion,
The drive unit rotates the link member around the rotation axis to move the tire support unit, whereby the load applied to the tire supported by the tire support unit from the pressing unit, or the tire A tire testing apparatus configured to change a slip angle or a camber angle with respect to the pressing portion. The tire testing device according to claim 1,
When the tire supported by the tire support portion is pressed against the pressing portion in a state where the room temperature of the test chamber is 0 ° C. or less, the tire is used while continuously running or stopped. Tire testing equipment. The tire testing device according to claim 1 or 2,
A tire testing apparatus, wherein a rotation support portion that supports the link member rotatably about the rotation axis is disposed outside the test chamber. The tire testing device according to any one of claims 1 to 3 ,
A tire testing apparatus, wherein a tire supported by the tire support portion is pressed against the pressing portion in a state where the room temperature of the test chamber is set to -50 ° C. A tire test method for testing a tire by pressing a tire supported by the tire support portion against the pressing portion in a state where the room temperature of the test chamber is 0 ° C. or less using the tire test apparatus according to claim 1. There,
A tire test method, wherein when the tire supported by the tire support portion is pressed against the pressing portion, the tire is continuously run or stopped.

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