Vehicle

Abstract

A vehicle having two chassis components, which are connected by a sloping plane, especially by a guidance device and/or sliding bearing along a sloping plane, a first drive wheel being situated on at least one of the chassis components, and one wheel on the other chassis component, a rotational speed differential between the rotational speed of the drive wheel and the rotational speed of the wheel being able to be induced by a device.

Claims

1. A vehicle, comprising: a plurality of chassis components, at least two of the chassis components connected by a sloping plane; a first drive wheel situated on at least one of the chassis components; another wheel situated on another one of the chassis components; and a device configured to drive the other wheel at a rotational speed different from a rotational speed of the first drive wheel.

2. A vehicle, comprising: a plurality of chassis components, at least two of the chassis components connected by a sloping plane; a first drive wheel situated on at least one of the chassis components; another wheel situated on another one of the chassis components; and a device by which a rotational speed differential between a rotational speed of the drive wheel and a rotational speed of the other wheel is brought about; wherein the at least two of the chassis components are connected by at least one of a guidance device and a sliding bearing along the sloping plane.

3. The vehicle as recited in claim 1, wherein the chassis components are situated so as to be guided along the sloping plane by a guidance device.

4. The vehicle as recited in claim 1, further comprising: a locking arrangement for one of locking and enabling a relative movement of the chassis components along the sloping plane.

5. A vehicle, comprising: a plurality of chassis components, at least two of the chassis components connected by a sloping plane; a first drive wheel situated on at least one of the chassis components; another wheel situated on another one of the chassis components; and a device by which a rotational speed differential between a rotational speed of the drive wheel and a rotational speed of the other wheel is brought about; wherein the device is a brake device that acts on the other wheel.

6. The vehicle as recited in claim 5, wherein the other wheel includes one of a fixed roller and a swivel roller.

7. A vehicle, comprising: a plurality of chassis components, at least two of the chassis components connected by a sloping plane; a first drive wheel situated on at least one of the chassis components; another wheel situated on another one of the chassis components; and a device by which a rotational speed differential between a rotational speed of the drive wheel and a rotational speed of the other wheel is brought about; wherein: the device includes one of a controlled electric motor and a regulated electric motor that drives the other wheel at a predefined setpoint speed that is the same as the rotational speed of the first drive wheel in normal driving, the normal driving occurring without a lifting movement, and that differs when executing the lifting movement.

8. A vehicle, comprising: a plurality of chassis components, at least two of the chassis components connected by a sloping plane; a first drive wheel situated on at least one of the chassis components; another wheel situated on another one of the chassis components; and a device by which a rotational speed differential between a rotational speed of the drive wheel and a rotational speed of the other wheel is brought about; wherein: the device includes one of a controlled electric motor and a regulated electric motor that drives the other wheel at a predefined setpoint speed that is the same as a setpoint rotational speed of the other wheel in normal driving, the normal driving occurring without a lifting movement, and that differs therefrom when executing the lifting movement.

9. The vehicle as recited in claim 1, wherein a direction of a normal of the sloping plane has a non-vanishing angular amount in relation to a direction of a normal of a maneuvering plane.

10. The vehicle as recited in claim 1, wherein one of the drive wheel and the other wheel is connected to one of a first one of the chassis components and a second one of the chassis components via a linear guidance.

11. A vehicle, comprising: a plurality of chassis components, at least two of the chassis components connected by a sloping plane; a first drive wheel situated on at least one of the chassis components; another wheel situated on another one of the chassis components; and a device by which a rotational speed differential between a rotational speed of the drive wheel and a rotational speed of the other wheel is brought about; and one of swivel rollers and fixed rollers situated on at least one of the chassis components.

12. A vehicle, comprising: a plurality of chassis components, at least two of the chassis components connected by a sloping plane; a first drive wheel situated on at least one of the chassis components; another wheel situated on another one of the chassis components; and a device by which a rotational speed differential between a rotational speed of the drive wheel and a rotational speed of the other wheel is brought about; and a control unit for transmitting at least one of a control signal and control information to the converter and/or the device.

13. The vehicle as recited in claim 12, wherein the one of the control signal and the control information includes one of a setpoint rotational speed and a setpoint torque.

14. A vehicle, comprising: a plurality of chassis components, at least two of the chassis components connected by a sloping plane; a first drive wheel situated on at least one of the chassis components; another wheel situated on another one of the chassis components; and a device by which a rotational speed differential between a rotational speed of the drive wheel and a rotational speed of the other wheel is brought about; and wherein the drive wheel is pressed against a maneuvering plane with the aid of one of a linear actuator and a spring element braced on one of the chassis components.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 shows a schematic illustration of a vehicle, especially a transport vehicle, for which standard driving is depicted.

(2) FIG. 2 illustrates the manner in which a lift 5 is realized in the vehicle.

(3) FIG. 3 shows normal driving for another vehicle according to the present invention, the vehicle having only one pair of drive wheels 30.

(4) FIG. 4 depicts the manner in which a lift is realized in the vehicle according to FIG. 3.

DETAILED DESCRIPTION

(5) As illustrated in FIGS. 1 and 2, the chassis of the vehicle features a sloping plane. That is to say, a first chassis component 1 and a second chassis component 2 are connected via a sloping plane, so that in a relative approach of the two chassis components (1, 2), one of chassis components 1, which is chassis component 1 in the example, is elevated. The top side of first chassis component 1 thus is able to be fitted with an object to be lifted.

(6) In this way the vehicle according to the present invention is able to replace a forklift. A load picked up at a first height is therefore able to be transported to a different position at a different level.

(7) First chassis component 1 is linked to a first drive wheel 3 via a linear guidance 6, which is able to be driven by an electric motor.

(8) Linear guidance 6 makes it possible for the first drive wheel to stay in contact with the maneuvering surface during the lifting movement. In the course of the lifting movement, first chassis component 1 is raised and guided by linear guidance 6.

(9) Second chassis component 2 likewise has a drive wheel 4, and this second drive wheel 4 is likewise able to be driven by an electric motor.

(10) Instead of the individual wheels shown in the figures, multiple wheels can be used, which have drives that are operated in synchrony, especially electric motors.

(11) As illustrated in FIG. 2, the lifting movement is produced by a relative movement toward each other, since the chassis components (1, 2) connected via the sloping plane, which may be developed to include a plain bearing or an antifriction bearing, for instance, are then moved toward each other and first chassis component 1 must therefore be raised, since the second chassis component has a second drive wheel 4 that is immovable in the lifting direction.

(12) Second drive wheel 4 is supported on second chassis component 2 by means of a bearing. A bearing supports first drive wheel 3 on linear guidance 6, which in turn is connected to second chassis component 2.

(13) The electric motors are supplied by a converter and preferably include sensors for recording the angular position of the rotor shaft of the individual electric motor or the particular drive wheel (3, 4). As a result, the angular positions of drive wheels (3, 4) are able to be regulated or controlled in a precise manner, especially when the electric motors are developed as synchronous motors. The height is thereby precisely controllable as well.

(14) Instead of the bilateral movement of both drive wheels (3, 4) toward each other as shown in FIG. 2, it is also possible to move one of the wheels more slowly than the other. As a result, the load is already able to be lifted while the vehicle is driving. Braking of one of the drive wheels (3, 4) and a simultaneous movement of the other one of the drive wheels (3, 4) induces a lifting movement as well.

(15) As illustrated in FIG. 3 and FIG. 4, a lifting movement is able to be executed also when using only a single drive wheel 30 or only one type of drive wheels 30 operated in synchrony.

(16) For if one or each of the two chassis component(s) (1, 2) is maneuverable on the maneuvering surface via fixed rollers 31, as illustrated in FIG. 3 and FIG. 4, a height adjustment by the relative movement of the two chassis components (3, 4) is also possible by decelerating one of the chassis components, in the example, first chassis component 1. A brake is disposed on this chassis component 1 for that purpose, or a brake 32 is situated on fixed roller 31 connected to first chassis component 1.

(17) If the brake force is controllable, then the lift may already be executed in the course of driving, by appropriate braking of fixed roller 31.

(18) Swivel rollers or also other wheels are usable as fixed rollers. The weight force is introduced into the maneuvering surface essentially via fixed rollers 31. Drive wheel 30 can be driven with the aid of the electric motor to which it is connected, which in turn is supplied from a converter. The drive wheel is preferably pressed against the maneuvering surface such that it does not lose traction. It is therefore not necessary to transmit the entire weight of the chassis component via drive roller 30.

(19) Drive wheels 30 are preferably disposed so as to be steerable. That is to say, the wheel axle of drive wheels 30 is rotatable parallel to the maneuvering plane. To do so, the drive wheel is linked to second chassis component 2 via a pivot bearing.

(20) The lift direction has been marked by reference numeral 5 in FIGS. 2 and 4 and takes place in the gravitational direction or counter thereto.

(21) In one further exemplary embodiment according to the present invention, the sloping plane is lockable, so that no unintentional lifting of the load occurs when driving without a height adjustment.

(22) In another exemplary embodiment according to the present invention, the two chassis components (3, 4) are guided along the sloping plane. As a result, only a relative displacement of the two chassis components (3, 4) toward each other along the sloping plane is possible.

(23) In one further exemplary embodiment of the present invention, the vehicle is developed as a rail-guided vehicle. The principle of the present invention can easily be transferred to such vehicles as well. In such a case, rail wheels are used instead of the fixed rollers, and the drive wheels (2, 4, 30) are likewise realizable as rail wheels.

LIST OF REFERENCE NUMERALS

(24) 1 first chassis component 2 second chassis component 3 first drive wheel, in particular first drive roller 4 second drive wheel, in particular second drive roller 5 lift 6 linear guidance 30 drive wheel 31 fixed roller, especially a swivel roller 32 braked fixed roller 31