Detection device, mechanical device, and work vehicle
A detection device includes a photographing unit, a first holding portion holding the photographing unit, a magnet having an attracting face facing a flow space in which fluid flows and opposed to the photographing unit via the flow space, a second holding portion holding the magnet, and a connection portion connected to the second holding portion and having an opening portion.
1. A detection device comprising:
an attracting face photographing unit;
a first holding portion holding the attracting face photographing unit;
a magnet having an attracting face facing a flow space in which fluid flows, the attracting face opposed to the attracting face photographing unit via the flow space;
a second holding portion holding the magnet; and
a connection portion connected to the second holding portion and having an opening portion.
2. The detection device according to claim 1 , further comprising:
a spacer portion which is arranged between the photographing unit and the magnet and has a magnet-side end face opposed to the attracting face via the flow space and is held by the first holding portion.
3. The detection device according to claim 1 , wherein
in a plane orthogonal to an optical axis of an optical system of the photographing unit, the optical axis and a center of the attracting face are aligned with each other.
4. The detection device according to claim 1 , further comprising:
an indicator portion provided near the magnet and used to determine a state of a liquid flowing in the flow space.
5. The detection device according to claim 1 , wherein
the magnet is annular and includes a cone portion arranged inside the magnet.
6. The detection device according to claim 1 , wherein
the first holding portion is arranged in an opening of a housing accommodating a mechanical part.
7. A mechanical device comprising:
a housing having an opening in which the detection device according to claim 1 is arranged; and
a mechanical part accommodated and oil-immersed in the housing.
8. A work vehicle comprising:
the mechanical device according to claim 7 .
9. A detection device comprising:
a photographing unit;
a first holding portion holding the photographing unit;
a magnet having an attracting face facing a flow space in which fluid flows, the attracting face opposed to the photographing unit via the flow space;
a second holding portion holding the magnet;
a connection portion connected to the second holding portion and having an opening portion; and
a spacer portion which is arranged between the photographing unit and the magnet and has a magnet-side end face opposed to the attracting face via the flow space and is held by the first holding portion.
10. A detection device comprising:
a photographing unit;
a first holding portion holding the photographing unit;
a magnet having an attracting face facing a flow space in which fluid flows, the attracting face opposed to the photographing unit via the flow space;
a second holding portion holding the magnet;
a connection portion connected to the second holding portion and having an opening portion; and
an indicator portion provided near the magnet and used to determine a state of a liquid flowing in the flow space.