Dynamic stability control systems and methods for industrial lift trucks
First Claim
Patent Images
1. A system for stabilizing a lift truck, the system comprising:
- at least one caster to provide lift truck stability;
a sensor to provide a value of motion of the lift truck in at least one of an X-axis and a Y-axis;
a control system, the control system to determine which direction the lift truck is moving in the at least one of the X-axis and the Y-axis by comparing the value of motion to a stationary value of motion;
the control system also compares the value of motion to a threshold value of motion; and
an actuator to lock movement of the caster on a side of the lift truck based on the direction that the control system determined the lift truck to be moving.
1 Assignment
0 Petitions
Accused Products
Abstract
A lift truck includes systems and methods for improved stability control. Stability control features reduce or eliminate motion of the truck in one or more of the X-axis, Y-axis, and Z-axis. Some embodiments may include, alone or in combination with the stability control, vibration control to further stabilize the motion of the truck.
-
Citations
28 Claims
-
1. A system for stabilizing a lift truck, the system comprising:
-
at least one caster to provide lift truck stability; a sensor to provide a value of motion of the lift truck in at least one of an X-axis and a Y-axis; a control system, the control system to determine which direction the lift truck is moving in the at least one of the X-axis and the Y-axis by comparing the value of motion to a stationary value of motion; the control system also compares the value of motion to a threshold value of motion; and an actuator to lock movement of the caster on a side of the lift truck based on the direction that the control system determined the lift truck to be moving. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A method for stabilizing a lift truck having at least one caster, the method comprising:
-
measuring a value of motion of the lift truck in at least one of an X-axis and a Y-axis; determining which direction the lift truck is moving by comparing the measured value of motion to a stationary value of motion; comparing the measured value of motion to a threshold value of motion; and locking movement of the caster on a side of the lift truck that is determined to be moving. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
-
-
28. A lift truck having stability control, the lift truck comprising:
-
at least one caster to provide lift truck stability; a vertical support for mounting electrical components, the vertical support including two or more cylinders that function as a mass-damper system; a sensor to provide a value of motion of the lift truck in at least one of an X-axis and a Y-axis and a Z-axis; a control system, the control system to control the mass-damper and to determine which direction the lift truck is moving in the at least one of the X-axis and the Y-axis and the Z-axis by comparing the value of motion to a stationary value of motion; the control system also to compare the value of motion to a threshold value of motion; and an actuator to lock movement of the caster on a side of the lift truck based on the direction that the control system determined the lift truck to be moving.
-
Specification