초록 ▼

A method and apparatus for measuring the geometry of a rail for a railroad track which includes mounting first and second cameras in back to back relationship to create a single camera axis passing through the camera lenses and to define a coordinate system with an origin centered between the camera

A method and apparatus for measuring the geometry of a rail for a railroad track which includes mounting first and second cameras in back to back relationship to create a single camera axis passing through the camera lenses and to define a coordinate system with an origin centered between the cameras on the camera axis. First and second targets are placed on the rail to be measured and spaced an equal distance from the origin between first and second cameras respectively. The first and second cameras record the position of the first and second targets and provide position signals from which the mid-chord value of a chord extending between the first and second targets is computed.

대표청구항 ▼

A method and apparatus for measuring the geometry of a rail for a railroad track which includes mounting first and second cameras in back to back relationship to create a single camera axis passing through the camera lenses and to define a coordinate system with an origin centered between the camera

A method and apparatus for measuring the geometry of a rail for a railroad track which includes mounting first and second cameras in back to back relationship to create a single camera axis passing through the camera lenses and to define a coordinate system with an origin centered between the cameras on the camera axis. First and second targets are placed on the rail to be measured and spaced an equal distance from the origin between first and second cameras respectively. The first and second cameras record the position of the first and second targets and provide position signals from which the mid-chord value of a chord extending between the first and second targets is computed. rmation in the region of the channel opening and/or in the free space. ction parallel to an arm axis direction of the swing arm is made greater than the radial bearing rigidity in a direction orthogonal to said arm axis direction. 5. A method according to claim 4, wherein said housing is formed with a recess, thereby reducing the radial bearing rigidity of the ball bearing device.