WORK VEHICLE

• US 20180266075A1
• Filed: 12/28/2016
• Published: 09/20/2018
• Est. Priority Date: 12/28/2016
• Status: Active Grant

• Current Assignee: Komatsu Ltd.
• Original Assignee: Komatsu Ltd.
• Inventors: MIYAMOTO, Hirofumi, SETO, Yohei
• Granted Patent: US 10,577,775 B2
• Time in Patent Office: Days
• CPC Class Codes: B60K 11/02 with liquid cooling
• CPC Class Codes: B60R 3/005 Catwalks, running boards for vehicle tops, access means for vehicle tops; Handrails therefor
• CPC Class Codes: B66C 13/52 Details of compartments for driving engines or motors or of operator's stands or cabins
• CPC Class Codes: E02F 3/283 with a single arm pivoted directly on the chassis linkage mechanism for it E02F3/3405
• CPC Class Codes: E02F 9/0833 Improving access, e.g. for maintenance, steps for improving driver's access, handrails
• CPC Class Codes: E02F 9/0866 Engine compartment, e.g. heat exchangers, exhaust filters, cooling devices, silencers, mufflers, position of hydraulic pumps in the engine compartment
• CPC Class Codes: E02F 9/0891 Lids or bonnets or doors or details thereof doors for cabins E02F9/163 takes precedence; for motor vehicles B62D25/10

Abstract

A work vehicle includes a vehicle body which has a passage including a rear passage, and a movable fence rotatably supported to the vehicle body around a rotation axis which extends in a vertical direction between a normal position which extends in a width direction of the vehicle body along a rear edge of the rear passage and a retreat position which extends backward from the vehicle body.

Claims

1. A work vehicle, comprising:

a vehicle body that has a passage including a rear passage; and

a movable fence that is rotatably supported to the vehicle body around a rotation axis extending in a vertical direction between a normal position which extends in a width direction of the vehicle body along a rear edge of the rear passage and a retreat position which extends backward from the vehicle body.

2. The work vehicle according to claim 1,

wherein a pair of movable fences are provided,

wherein one movable fence is rotatably supported around the rotation axis disposed on one side in a width direction of the rear fence,

wherein the other movable fence is rotatably supported around the rotation axis disposed on the other side in a width direction of the rear fence, and

wherein tips of the pair of movable fences at the normal position face each other in the width direction.

3. The work vehicle according to claim 1,

wherein the vehicle body includes:

an opening portion that faces backward;

the passage that extends along a lower edge portion of the opening portion; and

an opening and closing portion that is supported to be openable and closable with respect to the vehicle body between a closed position at which the opening portion is closed and an open position at which the opening portion is open,

wherein the movable fence at the normal position is positioned within an operation region of the opening and closing portion, and

wherein the movable fence at the retreat position is positioned outside the operation region of the opening and closing portion,

4. The work vehicle according to any one of claim 1, further comprising:

a rotation connection portion that connects the movable fence to the vehicle body to be rotatable around the rotation axis,

wherein the vehicle body supports the movable fence via the rotation connection portion,

wherein the rotation connection portion includes a bush that has a hole portion penetrating along the rotation axis,

wherein the movable fences includes;

a base end shaft that penetrates the hole portion; and

a flange that extends from an outer peripheral surface of the base end shaft and abuts on the bush from above.

5. The work vehicle according to claim 4,

wherein the vehicle body further includes a fixed fence that extends along an outer edge of the passage, and

wherein the rotation connection portion is fixed to the fixed fence.

6. The work vehicle according to claim 1,

wherein the vehicle body further includes an attachment/detachment fixing portion that is provided on a rear portion of the vehicle body and is configured to detachably fix a lower portion of the movable fence at the normal position.

7. The work vehicle according to any one of claim 1, further comprising:

a cooling unit that is provided inside the vehicle body,

wherein the opening and closing portion includes

a grille that is rotatably supported with respect to the vehicle body, and

a blower unit that is disposed between the grille and the cooing unit and is rotatably supported with respect to the vehicle body.

8. The work vehicle according to claim 2,

wherein the vehicle body includes:

an opening portion that faces backward;

the passage that extends along a lower edge portion of the opening portion; and

an opening and closing portion that is supported to be openable and closable with respect to the vehicle body between a closed position at which the opening portion is closed and an open position at which the opening portion is open,

wherein the movable fence at the normal position is positioned within an operation region of the opening and closing portion, and

wherein the movable fence at the retreat position is positioned outside the operation region of the opening and closing portion.

9. The work vehicle according to claim 2, further comprising:

a rotation connection portion that connects the movable fence to the vehicle body to be rotatable around the rotation axis,

wherein the vehicle body supports the movable fence via the rotation connection portion,

wherein the rotation connection portion includes a bush that has a hole portion penetrating along the rotation axis,

wherein the movable fences includes;

a base end shaft that penetrates the hole portion; and

a flange that extends from an outer peripheral surface of the base end shaft and abuts on the bush from above.)

3-1. The work vehicle according to claim 3, further comprising:

a rotation connection portion that connects the movable fence to the vehicle body to be rotatable around the rotation axis,

wherein the vehicle body supports the movable fence via the rotation connection portion,

wherein the rotation connection portion includes a bush that has a hole portion penetrating along the rotation axis,

wherein the movable fences includes;

a base end shaft that penetrates the hole portion; and

a flange that extends from an outer peripheral surface of the base end shaft and abuts on the bush from above.

11. The work vehicle according to claim 8, further comprising:

a rotation connection portion that connects the movable fence to the vehicle body to be rotatable around the rotation axis,

wherein the vehicle body supports the movable fence via the rotation connection portion,

wherein the rotation connection portion includes a bush that has a hole portion penetrating along the rotation axis,

wherein the movable fences includes;

a base end shaft that penetrates the hole portion; and

a flange that extends from an outer peripheral surface of the base end shaft and abuts on the bush from above.)

12. The work vehicle according to claim 2,

wherein the vehicle body further includes an attachment/detachment fixing portion that is provided on a rear portion of the vehicle body and is configured to detachably fix a lower portion of the movable fence at the normal position.

13. The work vehicle according to claim 3,

wherein the vehicle body further includes an attachment/detachment fixing portion that is provided on a rear portion of the vehicle body and is configured to detachably fix a lower portion of the movable fence at the normal position.

14. The work vehicle according to claim 4,

wherein the vehicle body further includes an attachment/detachment fixing portion that is provided on a rear portion of the vehicle body and is configured to detachably fix a lower portion of the movable fence at the normal position.

15. The work vehicle according to claim 5,

wherein the vehicle body further includes an attachment/detachment fixing portion that is provided on a rear portion of the vehicle body and is configured to detachably fix a lower portion of the movable fence at the normal position.

16. The work vehicle according to claim 2, further comprising:

a cooling unit that is provided inside the vehicle body,

wherein the opening and closing portion includes

a grille that is rotatably supported with respect to the vehicle body, and

a blower unit that is disposed between the grille and the cooing unit and is rotatably supported with respect to the vehicle body.)

17. The work vehicle according to claim 3, further comprising:

a cooling unit that is provided inside the vehicle body,

wherein the opening and closing portion includes

a grille that is rotatably supported with respect to the vehicle body, and

a blower unit that is disposed between the grille and the cooing unit and is rotatably supported with respect to the vehicle body.)

18. The work vehicle according to claim 4, further comprising:

a cooling unit that is provided inside the vehicle body,

wherein the opening and closing portion includes

a grille that is rotatably supported with respect to the vehicle body, and

a blower unit that is disposed between the grille and the cooing unit and is rotatably supported with respect to the vehicle body.)

5-1. The work vehicle according to claim 5, further comprising:

a cooling unit that is provided inside the vehicle body,

wherein the opening and closing portion includes

a grille that is rotatably supported with respect to the vehicle body, and

a blower unit that is disposed between the grille and the cooing unit and is rotatably supported with respect to the vehicle body.)

20. The work vehicle according to claim 6, further comprising:

a cooling unit that is provided inside the vehicle body,

wherein the opening and closing portion includes

a grille that is rotatably supported with respect to the vehicle body, and

a blower unit that is disposed between the grille and the cooing unit and is rotatably supported with respect to the vehicle body.