Vehicle with at least three axles
AssigneeKlockner-Humboldt-Deutz Aktiengesellschaft
InventorsJes-Ernst Carstensen, Walter Nau
Life of this patent
Estimating the term…
Abstract
A vehicle with at least three axles two of which are combined to form a double-axle unit and which are resiliently connected to a frame. The vehicle furthermore comprises a first device for automatically lifting and lowering one axle of the double-axle unit while a control element is provided for controlling the lifting and lowering device in conformity with the respective axle load. The vehicle also comprises a second device which ascertains the respective total vehicle load to be taken over by the respective double-axle unit or the measured values of the vehicle load and actuates the control element in conformity with the total vehicle load or ascertained measured values.
Claims9
An automatic control apparatus for a lifting device of a liftable axle of a double-axle unit of multiple axle vehicles, including also a non-liftable axle and which controls the lifting dependent upon axle loading, comprising in combination:
- a frame having two of the axles combined in a double-axle unit yieldingly connected to said frame;
- a lifting device for lifting and lowering the liftable axle of the double-axle unit;
- a sensor for determining magnitude of load carried by the liftable axle in elevated and lowered positioning respectively separately emitting corresponding control values for the particular loading of both the liftable axle and the non-liftable axle, said sensor adding the total load of the double-axle unit collectively for purposes of emitting thereof;
- and
- a control element for actuating said lifting device only in response to and dependent upon the total load control value emitted collectively from said sensor to eliminate oscillating pendulum action in lift positioning and to assure stable traveling behavior of the multiple axle vehicles.
An automatic control apparatus for a lifting device of a liftable axle of a double-axle unit of multiple axle vehicles, including also a non-liftable axle and which controls the lifting dependent upon axle loading, comprising:
- a frame having two of the axles combined in a double-axle unit yieldingly connected to said frame;
- a lifting device for lifting and lowering the liftable axle of the double-axle unit;
- a sensor for determining magnitude of load carried by the liftable axle in elevated and lowered positioning respectively separately emitting corresponding control values for the particular loading of the liftable axle and the non-liftable axle, said sensor adding the total load of the double-axle unit for purposes of emitting thereof;
- a control element for actuating said lifting device in response to and dependent upon the total load control value emitted from said sensor and;
- a stepped piston and spring bellows as axle springs having load dependent pressure therein for the non-liftable axle and having further spring bellows pressureless in lifted condition as well as pressure-loaded dependent upon load in lowered condition for the liftable axle, said bellows pressure being effective upon said stepped piston separately in identical direction against spring force with longitudinal shifting and displacement of said stepped piston being transmitted to said control element.
An automatic control apparatus for a lifting device of a liftable axle of a double-axle unit of multiple axle vehicles, including also a non-liftable axle and which controls the lifting dependent upon axle loading, comprising:
- a frame having two of the axles combined in a double-axle unit yieldingly connected to said frame;
- a lifting device for lifting and lowering the liftable axle of the double-axle unit;
- a sensor for determining magnitude of load carried by the liftable axle in elevated and lowered positioning respectively separately emitting corresponding control values for the particular loading of the liftable axle and the non-liftable axle, said sensor adding the total load of the double-axle unit for purposes of emitting thereof;
- a control element for actuating said lifting device in response to and dependent upon the total load control value emitted from said sensor, and;
- mechanical springs as axle springs having load-dependent paths thereof serving as control values whereby said lifting device engages the liftable axle such that axle springs of the liftable axle in lifted condition of this liftable axle are unloaded.
Dependencies are inferred from the claim text.