Load responsive damping system
First Claim
1. In a vehicle (10) of the load carrying type including a horizontally disposed frame (14) having first (16) and second (18) end portions, an axle (28 or 28'"'"') mounted to said frame second end portion (18), and a load carrying device (30) being connected to said frame first end portion (16), an improvement comprising:
- sensing means (44) for sensing a variable load (12) imposed on said load carrying device (30) and communicating a variable signal in response to said variable load; and
,damping means (45 or 45'"'"') for receiving said variable signal communicated by said sensing means (44) and responsively moving said axle (28, 28'"'"') and said frame second end portion (18) in directions vertically and relative to each other in response to said variable signal.
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Accused Products
Abstract
A damping system (43) for use in a lift truck (10) to damp oscillating motions of the vehicle frame (14). The system includes a pair of hydraulic tilt cylinders (46a, 46b) which sense moments of force of a carried load (12). A pair of second hydraulic cylinders (72a, 72b) are in communication to a rear axle (28) of the vehicle. The rear axle is resiliently mounted from a second end portion (18) of the vehicle frame (14), and is moved by the second cylinders in directions substantially normal to the vehicle frame. Such movement is responsive to sensed moments of force of the lifted load.
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Citations
12 Claims
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1. In a vehicle (10) of the load carrying type including a horizontally disposed frame (14) having first (16) and second (18) end portions, an axle (28 or 28'"'"') mounted to said frame second end portion (18), and a load carrying device (30) being connected to said frame first end portion (16), an improvement comprising:
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sensing means (44) for sensing a variable load (12) imposed on said load carrying device (30) and communicating a variable signal in response to said variable load; and
,damping means (45 or 45'"'"') for receiving said variable signal communicated by said sensing means (44) and responsively moving said axle (28, 28'"'"') and said frame second end portion (18) in directions vertically and relative to each other in response to said variable signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 12)
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11. In a vehicle (10) of the load carrying type including a horizontally disposed frame (14) having first (16) and second (18) end portions, an axle (28 or 28'"'"') resiliently mounted to said frame second end portion (18), and a load carrying device (30) being connected to said frame first end portion (16), an improvement comprising:
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sensing means (44) for sensing a variable load (12) imposed on said load carrying device (30) and communicating a variable signal in response to said variable load; and
,damping means (45 or 45'"'"') for receiving said variable signal communicated by said sensing means (44) and responsively moving said axle (28, 28'"'"') and said frame second end portion (18) in directions vertically and relative to each other in response to said variable signal.
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Specification