Agricultural work vehicle

1 . An agricultural work vehicle, comprising:

a vehicle body; and

a cabin coupled to the vehicle body, and provided with a driver's seat therein;

wherein the cabin includes:

a lower frame configured to form a lower part of the cabin;

an upper frame configured to form an upper part of the cabin;

a lower window selectively and detachably coupled to a rear of the lower frame, and configured to be selectively opened and closed; and

an upper window hinged to a rear of the upper frame on one side thereof, and openably coupled to the upper frame,

wherein:

the lower window is coupled to the lower frame to close a rear portion of the lower frame; and

the upper window closes a rear portion of the upper frame to partially overlap the lower window after the lower window has closed the rear portion of the lower frame.

2 . The agricultural work vehicle of claim 1 , wherein:

the cabin includes a rear frame configured such that one side thereof is coupled to the rear of the lower frame and a remaining side thereof is coupled to the rear of the upper frame, and an opening and closing device configured to open or close the upper window;

the opening and closing device includes a stop member coupled to the rear frame to protrude toward the upper window, and an opening and closing part coupled to the upper window; and

the opening and closing part is supported on the stop member so that the upper window can be opened or closed.

3 . The agricultural work vehicle of claim 2 , wherein:

the opening and closing part includes:

an opening and closing body rotatably coupled to the upper window;

a closing member configured to be supported on the stop member so that the upper window can be placed in a closed position where the upper window comes into close contact with the rear frame; and

an opening member arranged to be spaced apart from the closing member, and configured to be supported on the stop member so that the upper window can be placed in a first partially open position where the upper window is spaced apart from the rear frame; and

the opening member and the closing member extend in different directions from the opening and closing body.

4 . The agricultural work vehicle of claim 2 , wherein:

the cabin includes a gas spring coupled to each of the rear frame and the upper window to adjust a distance by which the upper window is spaced from the rear frame; and

the opening and closing part is supported on the stop member, and thus supports the upper window that is pressed by the gas spring and moved toward the rear frame.

5 . The agricultural work vehicle of claim 1 , wherein the cabin includes:

a rear frame configured such that one side thereof is coupled to the rear of the lower frame and a remaining side thereof is coupled to the rear of the upper frame;

a gas spring coupled to each of the rear frame and the upper window to adjust a distance by which the upper window is spaced from the rear frame; and

an adjusting member coupled to each of the upper window and the rear frame.

6 . The agricultural work vehicle of claim 1 , wherein:

the cabin includes a rear frame configured such that one side thereof is coupled to the rear of the lower frame and a remaining side thereof is coupled to the rear of the upper frame, and a gas spring coupled to each of the rear frame and the upper window to adjust a distance by which the upper window is spaced from the rear frame; and

the upper window is pressed by the gas spring and is placed in a fully open position where the rear portion of the upper frame is fully opened.

7 . The agricultural work vehicle of claim 1 , wherein:

the vehicle body includes a work machine installed at a rear of the vehicle body, and an operation lever installed on the work machine to operate the work machine;

one end of the upper window is coupled to the cabin by a hinge; and

the upper window is arranged such that a remaining end of the upper window does not interfere with the operation lever during a process in which the upper window is opened while rotating around the hinge.

8 . The agricultural work vehicle of claim 1 , wherein:

the upper window includes a pressing member that protrudes toward the lower window;

the lower window includes a pressed member that protrudes toward the upper window; and

the pressing member presses the pressed member toward the cabin so that the upper window and the lower window can come into close contact with the cabin.

9 . The agricultural work vehicle of claim 1 , wherein:

the lower frame includes a passage member configured such that a part of an operator's body can protrude out of the cabin beyond a top of the rear of the lower frame therethrough, and connection members coupled to both sides of the passage member; and

the passage member is formed at a lower height than the connection members.

10 . The agricultural work vehicle of claim 9 , wherein:

the lower frame includes support members coupled to the connection members, and coupling members arranged to be spaced apart from the connection members; and

the lower window is inserted into coupling depressions formed between the coupling members and the connection members and comes into close contact with the lower frame.

11 . An agricultural work vehicle, comprising:

a vehicle body; and

a cabin coupled to the vehicle body, and provided with a driver's seat therein;

wherein the cabin includes:

a lower frame configured to form a lower part of the cabin;

an upper frame configured to form an upper part of the cabin;

a lower window selectively and detachably coupled to a rear of the lower frame, and configured to be selectively opened and closed; and

an upper window hinged to a rear of the upper frame on one side thereof, and openably coupled to the upper frame,

wherein:

the cabin includes a rear frame configured such that one side thereof is coupled to the rear of the lower frame and a remaining side thereof is coupled to the rear of the upper frame, and an opening and closing device configured to open or close the upper window,

the opening and closing device includes a stop member coupled to the rear frame to protrude toward the upper window, and an opening and closing part coupled to the upper window; and

the opening and closing part is supported on the stop member so that the upper window can be opened or closed.

12 . An agricultural work vehicle, comprising:

a vehicle body; and

a cabin coupled to the vehicle body, and provided with a driver's seat therein;

wherein the cabin includes:

a lower frame configured to form a lower part of the cabin;

an upper frame configured to form an upper part of the cabin;

a lower window selectively and detachably coupled to a rear of the lower frame, and configured to be selectively opened and closed; and

an upper window hinged to a rear of the upper frame on one side thereof, and openably coupled to the upper frame,

wherein:

the lower frame includes a passage member configured such that a part of an operator's body can protrude out of the cabin beyond a top of the rear of the lower frame therethrough, and connection members coupled to both sides of the passage member; and

the passage member is formed at a lower height than the connection members.