Hydraulic mechanical ramp for rail cart
AssigneeTotal Truck & Machine LLC
InventorKevin Wehrli
Life of this patent
Estimating the term…
Abstract
A tow cart includes a main frame, first and second bogies, a ramp frame, and an actuator. The first bogie supports the main frame. The ramp frame includes first and second opposing ends and a guide member. The ramp frame is operable to shift relative to the main frame between a ramp position in which an end of the ramp frame is proximal to the ground and a stowed position in which the end of the ramp frame is distal to the ground. The second bogie shiftably supports the main frame and includes a ramp engagement surface. The actuator is connected to the main frame and the second bogie and is configured to shift the second bogie so that the ramp engagement surface engages the guide member to shift the ramp frame from the ramp position to the stowed position.
Claims20
A tow cart comprising:
- a main frame having a first end and a second end opposite the first end;
- a first bogie supporting the main frame proximal the first end of the main frame;
- a ramp frame comprising:
- a first end proximal to the second end of the main frame,
- a second end opposite to the first end of the ramp frame, the ramp frame being shiftably connected to the second end of the main frame between a ramp position in which the second end of the ramp frame is proximal to the ground and a stowed position in which the second end of the ramp frame is distal to the ground, and
- one or more guide members;
- a second bogie shiftably supporting the main frame proximal the second end of the main frame and including one or more ramp engagement surfaces operable to engage the one or more guide members;
- and
- one or more actuators connected to the main frame and the second bogie and configured to shift the second bogie so that the one or more ramp engagement surfaces engage the one or more guide members to shift the ramp frame from the ramp position to the stowed position.
A tow cart comprising:
- a main frame having a first end and a second end opposite the first end;
- a first bogie supporting the main frame proximal the first end of the main frame;
- a ramp frame comprising:
- a first end proximal to the second end of the main frame,
- a second end opposite to the first end of the ramp frame, the ramp frame being shiftably connected to the second end of the main frame between a ramp position in which the second end of the ramp frame is proximal to the ground and a stowed position in which the second end of the ramp frame is distal to the ground, and
- one or more guide members;
- and
- a second bogie shiftably supporting the main frame proximal the second end of the main frame and comprising:
- a pair of longitudinally spaced axles;
- wheels connected to the axles;
- a plurality of bearings rotatably attached to the axles;
- a base assembly supported on the plurality of bearings;
- a middle assembly rotatably mounted on the base assembly so that the middle assembly is operable rotate about a longitudinal axis;
- a top assembly rotatably mounted on the middle assembly so that the top assembly is operable rotate about a vertical axis;
- and
- one or more ramp engagement surfaces operable to engage the one or more guide members to shift the ramp frame from the ramp position to the stowed position.
A tow cart comprising:
- a main frame having a first end and a second end opposite the first end;
- a first bogie supporting the main frame proximal the first end of the main frame;
- a ramp frame comprising:
- a first end proximal to the second end of the main frame,
- a second end opposite to the first end of the ramp frame, the ramp frame being shiftably connected to the second end of the main frame between a ramp position in which the second end of the ramp frame is proximal to the ground and a stowed position in which the second end of the ramp frame is distal to the ground, and
- one or more guide members;
- a plurality of track rollers connected proximal to the second end of the main frame;
- and
- a second bogie having two or more roller engagement surfaces that support the plurality of track rollers so that the second bogie is shiftable relative to the main frame and one or more ramp engagement surfaces operable to engage the one or more guide members to shift the ramp frame from the ramp position to the stowed position.
Dependencies are inferred from the claim text.