Work vehicles

Abstract

The inventors noticed that, for work vehicles such as tractors, implements may not be attachable. More specifically, the inventors noticed that, for work vehicles such as tractors, only implements of one type of coupling, either pin-type or hook-type, can be attached. [Solution] The tractor 10 comprises a vehicle body 11 and a connecting unit 20 attached to the vehicle body 11, and a work implement 50 of any connecting type selected from pin-connection type and hook-connection type can be connected to the connecting unit 20.

Claims

1. The vehicle body and A coupling unit to be attached to the vehicle body, It is equipped with, A work vehicle characterized in that a work machine of any type of connection type, arbitrarily selected from pin-connection type and hook-connection type, can be connected to the connection unit.

2. The work vehicle according to claim 1, characterized in that the connecting unit has a hook connecting portion to which the pin-connected type work machine is connected, and a pin connecting portion to which the hook-connected type work machine is connected.

3. The work vehicle according to claim 2, characterized in that the connecting unit comprises a base member, a left link plate member on which the hook connecting portion and the pin connecting portion are arranged, attached to the left side of the base member with reference to the front-rear direction of the vehicle body, and a right link plate member on which the hook connecting portion and the pin connecting portion are arranged, attached to the right side of the base member with reference to the front-rear direction of the vehicle body.

4. The left link plate member and the right link plate member are mounted so as to be rotatable around a pivot axis in the left-right direction of the vehicle body. One of the aforementioned hook connecting portion and one of the aforementioned pin connecting portion are arranged on the left link plate member so as to face each other across the pivot axis. The work vehicle according to claim 3, characterized in that one of the hook connecting portion and one of the pin connecting portion are arranged on the right link plate member so as to face each other across the pivot axis.

5. The left link plate member and the right link plate member are mounted so as to be slidable in the vertical direction. One of the aforementioned hook connecting portions and one of the aforementioned pin connecting portions are arranged on the left link plate member so as to be aligned in the vertical direction. The work vehicle according to claim 3, characterized in that one of the hook connecting portion and one of the pin connecting portion are arranged on the right link plate member so as to be aligned in the vertical direction.

6. The left link plate member and the right link plate member are fixedly attached. The aforementioned hook connecting portion is positioned behind the aforementioned pin connecting portion with reference to the front-to-rear direction of the vehicle body. The work vehicle according to claim 3, characterized in that a space is formed on the rear surface of the base member so that the pin-connected type work machine can be connected at the hook connection portion without interference.

7. The connecting unit has a rotating box member that is rotatably attached to the vehicle body around a rotation axis in the longitudinal direction of the vehicle body, The work vehicle according to claim 2, characterized in that the two hook connecting portions and the two pin connecting portions are alternately arranged at equal intervals on the outer edge of the rotating box member.

8. The connecting unit comprises a base member, a left hook attachment member on which the hook connecting portion is disposed and detachably attached to the left side of the base member with respect to the front-rear direction of the vehicle body, a right hook attachment member on which the hook connecting portion is disposed and detachably attached to the right side of the base member with respect to the front-rear direction of the vehicle body, a left pin attachment member on which the pin connecting portion is disposed and detachably attached to the left side of the base member with respect to the front-rear direction of the vehicle body, and a right pin attachment member on which the pin connecting portion is disposed and detachably attached to the right side of the base member with respect to the front-rear direction of the vehicle body. This is the work vehicle according to claim 2.

9. The base member has recesses provided on the left and right sides, respectively. The work vehicle according to claim 8, characterized in that the left hook attachment member, the right hook attachment member, the left pin attachment member, and the right pin attachment member each have a substantially ball-shaped portion that is detachably fitted into the recess.

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