Swivel joint and construction machine having the same
AssigneeDoosan Infracore Co., Ltd.
InventorKwangsik BAE
Life of this patent
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Abstract
Embodiments of the present disclosure may be directed to a swivel joint for connecting hydraulic oil between a lower body of a construction machine and an upper body rotatably supported by the lower body, the swivel joint including: a rotation support body including a first body supported by the lower body and a second body rotatably coupled to the first body and rotating together with the upper body when the upper body rotates; and a sensor supported by the rotation support body to detect rotation of the upper body.
Claims17
A swivel joint for connecting hydraulic oil between a lower body of a construction machine and an upper body rotatably supported by the lower body, the swivel joint comprising:
- a rotation support body comprising a first body supported by the lower body and a second body rotatably coupled to the first body and rotating together with the upper body when the upper body rotates;
- and
- a sensor supported by the rotation support body to detect rotation of the upper body.
A construction machine comprising:
- a lower body;
- an upper body supported by the lower body;
- a swing device disposed on the lower body to rotatably support the upper body;
- and
- a swivel joint disposed at a center portion of the swing device, the swivel joint comprising:
- a rotation support body comprising a first body supported by the lower body and a second body rotatably coupled to the first body and having one area disposed to protrude with respect to one surface of the upper body to rotate together with the upper body when the upper body rotates;
- a sensor supported by the second body protruding with respect to one surface of the upper body and configured to detect rotation of the upper body;
- and
- a hydraulic guide portion configured to couple a hydraulic line to an outer circumferential surface of an area of the second body.
A swivel joint for connecting hydraulic oil between a lower body of a construction machine and an upper body rotatably supported by the lower body, the swivel joint comprising,
- a rotation support body comprising a first body supported by the lower body, and a second body rotatably coupled to the first body and rotating together with the upper body when the upper body rotates;
- a detector having a first detection through hole defined therein, and rotating together with the second body;
- a relative detector having a second detection through hole defined therein, and supported by the lower body to provide relative rotation information between the upper body and the lower body to the detector;
- a second through hole defined inside the second body;
- a securing bracket partially inserted inside the second detection through hole to support position of the relative detector;
- and
- a guide pipe at least a portion of which is inserted into the second through hole, the first detection through hole, and the second detection through hole, wherein the guide pipe comprises one side supported by the securing bracket inserted into the second detection through hole and another side detachably coupled to the first body.
Dependencies are inferred from the claim text.