Granted Patent B2

US 12,241,808 · App. 17/718,589 · Granted Mar 4, 2025

Inventors: Sigeru Matsumoto (Tokyo, JP); Hiroshi Miyashita (Tokyo, JP); Kazuhiro Murauchi (Tokyo, JP); Shuichi Tokita (Kanagawa, JP); Naonori Oishi (Kanagawa, JP)

Assignee: KOKUSAI KEISOKUKI KABUSHIKI KAISHA

G01M17/021F16C13/006F16C29/008

Abstract

Claims (44)

1. A tire testing device comprising:

a road surface;

a carriage configured to rotatably hold a test wheel on which a test tire is mounted and capable of traveling along the road surface in a state where the test tire is in contact with the road surface; and

a plurality of guide mechanisms including a first guide mechanism and a second guide mechanism, which are configured to guide movement of the carriage in a traveling direction,

wherein each of the plurality of guide mechanisms includes:

a rail extending in the traveling direction of the carriage, the rail having a first side facing in a first direction and a second side facing in a second direction opposite the first direction; and

a runner fixed to the carriage and capable of travelling on the rail,

wherein the runner includes:

a plurality of rollers capable of rolling on the rail; and

a plurality of bearings configured to rotatably support the rollers,

wherein each bearing is a rolling bearing including rolling elements rolling on a circular track,

wherein the plurality of rollers include:

a first roller capable of rolling on an upper surface of a head of the rail; and

at least one of a second roller capable of rolling on a lower surface of the head of the rail and a third roller capable of rolling on a side surface of the head of the rail,

wherein the rail of the first guide mechanism and the rail of the second guide mechanism are arranged parallel to each other,

wherein, in the first guide mechanism, all of the rollers except for the first roller are disposed only on the first side of the rail of the first guide mechanism, and

wherein, in the second guide mechanism, all of the rollers except for the first roller are disposed only on the second side of the rail of the second guide mechanism.

2. The tire testing device according to claim 1 ,

wherein, in the first guide mechanism, all of the rollers except for the first roller are disposed on a side of the rail opposite to the second guide mechanism, and

wherein, in the second guide mechanism, all of the rollers except for the first roller are disposed on a side of the rail opposite to the first guide mechanism.

3. The tire testing device according to claim 1 ,

wherein, in the first guide mechanism, all of the rollers except for the first roller are disposed on a same side of the rail as the second guide mechanism, and

wherein, in the second guide mechanism, all of the rollers except for the first roller are disposed on a same side of the rail as the first guide mechanism.

4. The tire testing device according to claim 1 ,

wherein the plurality of rollers are grouped into a plurality of sets, and

wherein the plurality of sets of rollers are arranged in the traveling direction of the carriage, and

wherein each the plurality of sets of rollers includes the first roller and at least one of the second roller and the third roller.

5. The tire testing device according to claim 1 ,

wherein the runner includes:

a frame attached to the carriage; and

a plurality of rods supported by the frame,

wherein each bearing includes:

an inner ring fitted to a respective one of the rods;

an outer ring fitted to an inner peripheral surface of a respective one of the rollers; and

a plurality of the rolling elements interposed between an outer peripheral surface of the inner ring and an inner peripheral surface of the outer ring.

6. The tire testing device according to claim 1 ,

wherein the plurality of guide mechanisms include a third guide mechanism, and

wherein, in the third guide mechanism, all of the rollers except for the first roller are disposed only on the first side of the rail.

7. The tire testing device according to claim 6 ,

wherein the third guide mechanism is disposed between the first guide mechanism and the second guide mechanism.

8. The tire testing device according to claim 6 ,

wherein the second guide mechanism is disposed between the first guide mechanism and the third guide mechanism.

9. The tire testing device according to claim 1 ,

wherein the rail is a railway rail.

Assignments (1)

Priority Claims (1)

Continuity (2)

References Cited (86)