Pipe-joining attachment for work machine, work machine provided with same, and pipe-joining method
A pipe-joining attachment of a work machine includes an arm connecting unit connected to an arm of the work machine; a grip unit configured to grip a pipe; and a to-be-joined pipe contact unit located with respect to the grip unit in an axial direction of an insertion port of the pipe which is gripped by the grip unit and configured to come into contact with an outer peripheral surface of a to-be-joined pipe to be joined to the pipe on a receiving port side.
1 . A pipe-joining attachment of a work machine, comprising:
an arm connecting unit connected to an arm of the work machine;
a grip unit configured to be supported by the arm connecting unit and to grip a pipe;
a support portion configured to be supported by the arm connecting unit, the support portion being extending to be located in an axial direction of an insertion port of the pipe a part of which is gripped by the grip unit and extending downward with respect to the grip unit at a position in the axial direction; and
a to-be-joined pipe contact unit configured to be connected to a lower end of the support portion, to be located with respect to the grip unit in the axial direction, to come into contact with only a portion, that is located above an axis of a to-be-joined pipe, of an outer peripheral surface of the to-be-joined pipe to be joined to the pipe on a receiving port side.
2 . The pipe-joining attachment of a work machine according to claim 1 ,
wherein the to-be-joined pipe contact unit comes into contact with a portion of the outer peripheral surface of the to-be-joined pipe on the receiving port side, the portion being located in at least one of a first direction and a second direction orthogonal to the first direction when the receiving port is viewed in an axial direction of the to-be-joined pipe.
3 . The pipe-joining attachment of the work machine according to claim 1 , further comprising:
a horizontal-direction rotation mechanism configured to rotate the grip unit in a horizontal direction around a rotation axis extending in an up-down direction.
4 . The pipe-joining attachment of the work machine according to claim 1 , further comprising:
a horizontal-direction movement mechanism configured to move the grip unit in a direction that is orthogonal to an axis of the pipe gripped by the grip unit and is the horizontal direction.
5 . The pipe-joining attachment of the work machine according to claim 1 , further comprising:
an axial-direction movement mechanism configured to move the grip unit toward the to-be-joined pipe contact unit in the axial direction.
6 . A work machine comprising:
the pipe-joining attachment of the work machine according to claim 1 ; and
the arm where the pipe-joining attachment is attached to a tip portion.
7 . The work machine according to claim 6 , further comprising:
an image acquisition portion configured to acquire an image on which a position of the to-be-joined pipe contact unit of the pipe-joining attachment with respect to a receiving port of the to-be-joined pipe is able to be grasped.
8 . A pipe-joining method of joining an insertion port of a pipe to a receiving port of a to-be-joined pipe by using the pipe-joining attachment of the work machine according to claim 1 , the pipe-joining method comprising:
gripping the pipe by a grip unit; and
positioning the insertion port of the pipe with respect to the receiving port of the to-be-joined pipe by bringing a to-be-joined pipe contact unit into contact with the receiving port of the to-be-joined pipe in a state of gripping the pipe by the grip unit.