초록 ▼

A swiveling work machine includes a swivel deck, an engine and an operator's seat which are mounted on the swivel deck and a protector for the operator's seat mounted erect on the swivel deck. The swivel deck mounts, at a rear portion thereof, a support frame having four post portions disposed aroun

A swiveling work machine includes a swivel deck, an engine and an operator's seat which are mounted on the swivel deck and a protector for the operator's seat mounted erect on the swivel deck. The swivel deck mounts, at a rear portion thereof, a support frame having four post portions disposed around the engine. Two rear post portions of the support frame have upper ends thereof connected via a rear beam member. The rear beam member includes an attaching portion for the operator's seat protector to which portion the protector is attached.

대표청구항 ▼

The invention claimed is: 1. A swiveling work machine comprising: a swivel deck; an engine and an operator's seat which are mounted on the swivel deck; and a protector for the operator's seat mounted erect on the swivel deck; wherein the swivel deck mounts, at a rear portion thereof, a support fram

The invention claimed is: 1. A swiveling work machine comprising: a swivel deck; an engine and an operator's seat which are mounted on the swivel deck; and a protector for the operator's seat mounted erect on the swivel deck; wherein the swivel deck mounts, at a rear portion thereof, a support frame having four post portions disposed around the engine; two rear post portions of the support frame have upper ends thereof connected via a rear beam member; said rear beam member includes an attaching portion for the operator's seat protector to which portion the protector is attached; the support frame includes, at a front upper portion thereof an attaching portion for the operator's seat to which portion the operator's seat is attached; the operator's seat protector is constructed as a four-post type having right and left front post portions and right and left rear post portions, with the right and left rear support post portions being attached to said attaching portion, said right and left front post portions being attached to right and left front portions of the swivel deck, a pair of right and left upper beam portions connect upper ends of said respective front post portions with upper ends of said respective rear post portions and mount a roof member thereon, a front lower connecting portion for connecting lower portions of the right and left front post portions, and a rear lower connecting portion for connecting lower portions of the right and left rear post portions; and at said rear lower connecting portion, there is provided an attaching bracket to be attached to said attaching portion. 2. The swiveling work vehicle according to claim 1, wherein said rear lower connecting portion, the right and left rear post portions and respective latter halves of the right and left upper beam portions of the operator's seat protector are formed by bending a single pipe; a former half of said each upper beam portion and said each front post portion are formed of a single pipe, respectively; and the former half and the latter half of said each upper beam portion is connected via a connecting member. 3. The swiveling work vehicle according to claim 2, wherein the operator's seat is mounted at an upper portion of the support frame; said rear lower connecting portion of the operator's seat protector is disposed rearwardly of the operator's seat; and a lower portion of at least one of the rear post portions extends from the rear side of the driver's seat to a lateral side thereof. 4. The swiveling work vehicle according to claim 1, wherein a radiator is disposed on either right or left side of the support frame; an air cleaner and a muffler are mounted inside the support frame; and the swivel deck includes a support portion to which the support frame is detachably attached from above the engine. 5. The swiveling work vehicle according to claim 1, wherein the support frame includes, at right and left upper portions thereof, attaching portions for right and left implement controllers. 6. The swiveling work vehicle according to claim 5, wherein the support frame includes a support stay projecting from a lateral upper portion thereof to be connected with an upper portion of the radiator. 7. A swiveling work machine comprising: a swivel deck; an engine and an operator's seat which are mounted on the swivel deck; and a protector for the operator's seat mounted erect on the swivel deck; wherein the swivel deck mounts, at a rear portion thereof, a support frame having four post portions disposed around the engine; two rear post portions of the support frame have upper ends thereof connected via a rear beam member; said rear beam member includes an attaching portion for the operator's seat protector to which portion the protector is attached; the support frame includes, at right and left upper portions thereof, attaching portions for right and left implement controllers; the operator's seat protector is constructed as a four-post type having right and left front post portions and right and left rear post portions, with the right and left rear support post portions being attached to said attaching portion, said right and left front post portions being attached to right and left front portions of the swivel deck, a pair of right and left upper beam portions connect upper ends of said respective front post portions with upper ends of said respective rear post portions and mount a roof member thereon, a front lower connecting portion for connecting lower portions of the right and left front post portions, and a rear lower connecting portion for connecting lower portions of the right and left rear post portions; and at said rear lower connecting portion, there is provided an attaching bracket to be attached to said attaching portion. 8. The swiveling work vehicle according to claim 7, wherein said rear lower connecting portion, the right and left rear post portions and respective latter halves of the right and left upper beam portions of the operator's seat protector are formed by bending a single pipe; a former half of said each upper beam portion and said each front post portion are formed of a single pipe, respectively; and the former half and the latter half of said each upper beam portion is connected via a connecting member. 9. The swiveling work vehicle according to claim 8, wherein the operator's seat is mounted at an upper portion of the support frame; said rear lower connecting portion of the operator's seat protector is disposed rearwardly of the operator's seat; and a lower portion of at least one of the rear post portions extends from the rear side of the driver's seat to a lateral side thereof. 10. The swiveling work vehicle according to claim 7, wherein a radiator is disposed on either right or left side of the support frame; an air cleaner and a muffler are mounted inside the support frame; and the swivel deck includes a support portion to which the support frame is detachably attached from above the engine. 11. The swiveling work vehicle according to claim 7, wherein the support frame includes, at a front upper portion thereof, an attaching portion for the operator's seat and includes also, at a rear upper portion thereof, said attaching portion for the operator's seat protector. 12. The swiveling work vehicle according to claim 7, wherein the support frame includes a support stay projecting from a lateral upper portion thereof to be connected with an upper portion of the radiator.