Vehicle frame for work vehicle and method for manufacturing same

Abstract

The vehicle frame for work vehicle comprises a cabin frame that is assembled into a substantially box form and a base frame welded to the cabin frame.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a side view of the work vehicle;

FIG. 2 is a plan view of the work vehicle;

FIG. 3 is a side view showing frame structure of work vehicle;

FIG. 4 is a plan view showing frame structure of work vehicle;

FIG. 5 is a perspective view showing frame structure of work vehicle;

FIG. 6 is a vertical sectional front view of important section showing frame structure of work vehicle;

FIG. 7 is a vertical sectional front view of important section showing frame structure below the seat;

FIG. 8 is a cross-sectional plan view of important section showing receiving structure for the door and the front panel at the front part of the cabin;

FIG. 9 is a cross-sectional vertical view of important section showing receiving structure for the door and the roof panel at the upper part of the cabin;

FIG. 10 is a cross-sectional vertical view of important section showing receiving structure for the door and the roof panel at the rear upper part of the cabin;

FIG. 11 is a cross-sectional plan view of important section showing receiving structure for the door and the rear panel at the rear part of the cabin;

FIG. 12 is a vertical view showing important section showing connection portion between the base frame and the cabin frame

FIG. 13 is a side view of important section showing the cabin structure;

FIG. 14 is a side view of work vehicle showing the door structure in accordance with another embodiment.

Claims

1. A vehicle frame for work vehicle comprising: a cabin frame that is assembled into a substantially box form;a base frame welded to the cabin frame.

2. A vehicle frame according to claim 1, wherein the cabin frame includes:left and right side frames, each of which is formed into a loop;a plurality of cross members for connecting the left and right side frames.

3. A vehicle frame according to claim 2, wherein each of the side frames is formed with pipe material.

4. A vehicle frame according to claim 3, wherein the pipe material has an irregular shape having a recess formed along the entire length of the pipe material.

5. A vehicle frame according to claim 2, wherein each of the side frames is formed with a one-piece member.

6. A vehicle frame for work vehicle comprising: a side frame for defining an entrance and an exit of the work vehicle, said side frame is formed with pipe material that is formed into a loop.

7. A vehicle frame according to claim 6, wherein the pipe material has an irregular shape having a recess formed along the entire length of the pipe material.

8. A vehicle frame according to claim 6, wherein each of the side frames is bent three-dimensionally.

9. A vehicle frame according to claim 6 further comprising: a door pivotably attached to at least one of the side frames, the door has a transparent material having a curved surface.

10. A vehicle frame according to claim 6, wherein each of the side frames is formed with a one-piece pipe material.

11. A method of manufacturing a frame for work vehicle comprising: forming a cabin frame that is assembled into a substantially box form;forming a base frame;welding the base frame to the cabin frame.

12. A method for manufacturing a frame according to claim 11, wherein the step of forming the cabin frame includes a step of forming each of the right and left side frames into a loop, and a step of connecting the right and left side frames with a plurality of cross members.

13. A method for manufacturing a frame according to claim 12, wherein each of the side frames is formed with pipe material.

14. A method for manufacturing a frame according to claim 13, wherein the pipe material has an irregular shape having a recess formed along the entire length of the pipe material.

15. A method for manufacturing a frame according to claim 12, wherein the step of forming each of the right and left frames into a loop includes a step of forming each of the side frames with a one-piece member.

16. A method of manufacturing a frame for work vehicle comprising: preparing pipe material;forming a side frame defining an entrance into a loop with pipe material.

17. A method for manufacturing a frame according to claim 16, wherein the pipe material has an irregular shape having a recess formed along the entire length of the pipe material.

18. A method for manufacturing a frame according to claim 16, wherein the step of forming each of the side frames includes a step of bending the each side frame three dimensionally.

19. A method for manufacturing a frame according to claim 16, further comprising a step of: attaching a door pivotably to at least one of the side frames, wherein the door has a transparent material having a curved surface.

20. A method for manufacturing a frame according to claim 16, wherein each of the side frames is formed with a one-piece pipe material.