| WO/2000/073125 | FOUR-WHEEL DRIVE MOTOR VEHICLE WITH ARTICULATED VEHICLE STEERING |
| WO/2011/108948 | PROPULSION DEVICE AND METHOD |
| WO/2007/146929 | SUBSCRIPTION-BASED PRE-PROVISIONED TOWABLE UNIT FACILITATION METHOD |
CHRISTENSEN, Søren (Oestre Industrivej 2, Tjaereborg, DK-6731, DK)
| Patent Claims 1 . Method for establishing contact between the driving wheel (9) of a trailer mover (1 ), which is mounted on a trailer and a tyre surface (8) of a tire (6) on the trailer characterized in that the driving wheel (9) through a nonlinear movement is pushed into the tyre surface (8). Method according to claim 1 characterized in that the nonlinear movement is circular. Trailer mover (1 ) with driving wheel (9) for contact in a tyre surface (9) on a trailer for implementation of the method according to claim 1 or 2 characterized in that the trailer mover (1 ) consists of a part (12), mounted to the trailer, and a movable part (26) where the driving wheel (9) is placed, where the mounted part (12) and the movable part (26) via turning joint (17,18,19,20) is connected with at least 2 parallel guys (14,15), and where the movable part (26) can be moved in relation to the fixed part (12) by activation of an actuator (27), which in one end is connected to the fixed mounted part (12) and in the other end is connected to the movable part (26). Trailer mover (1 ) according to claim 3 characterized in that the parallel guys (14,15) via turning joints (21 ,22) are connected with a transverse guy (16), which is also provided with a guiding track (24) for contact with a pin (25), which is connected to one end (13) of the actuator (27). 5. 5. Trailer mover (1 ) according to claim 4 characterized in that the fixed part (12) is provided with a guiding track (23) for contact with the pin (25), which is connected to one end (13) of the actuator (27). Trailer mover (1 ) according to one or more of claims 3 to 5 characterized in that that movable part (26) in relation to the fixed part (12) can be moved in a nonlinear way in the vertical level between 5 and 25 mm preferably 1 1 mm and in the horizontal level between 25 and 75 mm preferably 47 mm. Application of trailer mover (1 ) according to one or more of claims 3 to 6 for moving of caravans and trailers for transportation of goods, animal transport or transportation of people. |
The invention relates to a method for establishing contact between the driving wheel of a trailer mover, which is mounted on a trailer and a tyre surface of a tire on the trailer.
Moreover, the invention relates to a trailer mover with driving wheel for contact in a tyre surface on a trailer for implementation of the method. Furthermore, the invention relates to application of trailer mover.
From patent nr. EP 1 714 858 B1 is known a trailer mover, where the driving wheel on the trailer mover, which is used to turn a wheel on the trailer, through a linear movement is pressed into the tyre surface of the wheel, which is to be turned.
The linear movement approximately follows a straight line, which goes through the centre of the wheel, which is to be turned. It has been found, however, that there are some drawbacks connected to the hitherto known technique, including that the tyre surface produces maximum resistance under influence of force as the one described in EP 1 714 858 B1. This means that a relatively large force must be applied to achieve the necessary mechanical contact between the driving wheel of the trailer mover and the tyre surface of the wheel, which is to be turned.
For the same reason, all components, which are included in the power transmission, must be able to handle the relatively large influences of force, which again results in that the components become relatively heavy and expensive in consumption of materials.
Also, relatively much energy must be used in order to establish the necessary mechanical contact.
It is therefore an object of the invention to improve the known method and trailer mover and application.
The object of the invention is achieved by a method of the type stated in the introductory portion of claim 1 , which is characterized in that the driving wheel through a nonlinear movement is pushed into the tyre surface.
In this way it thus becomes possible to press the driving wheel of the trailer mover into the tyre surface of the wheel, which is to be turned, in a direction where the tyre surface produces less resistance than it is the case by a linear effect as described above.
It is thereby achieved that less power and thereby energy must be used to establish the necessary mechanical contact between the driving wheel of the trailer mover and the tyre surface of the wheel, which is to be turned.
Moreover, the components, which are part of the power transmission, can be manufactured cheaper and lighter since they must not transmit as large powers as demanded by the hitherto known technique.
Further appropriate embodiments of the method are stated in claim 2.
As mentioned the invention also relates to a trailer mover. This trailer mover is characterized in that the trailer mover consists of a part, mounted to the trailer, and a movable part where the driving wheel is placed, where the mounted part and the movable part via turning joint is connected with at least 2 parallel guys, and where the movable part can be moved in relation to the fixed part by activation of an actuator, which in one end is connected to the mounted part and in the other end is connected to the movable part.
It hereby becomes possible to establish a nonlinear movement of the trailer mover's driving wheel in preparation for establishing the necessary mechanical contact between the trailer mover driving wheel and the surface of the tyre on the wheel, which is to be turned.
Further appropriate embodiments appear from claims 4 to 6.
As mentioned, the invention also relates to application of trailer mover for moving caravans and trailers for commodities, animal transport or transportation of people.
It is hereby achieved that these trailer types simply, inexpensively and energy efficiently can be moved with the trailer mover.
The invention will now be explained more fully with reference to the drawings, in which:
Fig. 1 shows a simplified diagram of a wheel pair from a trailer where a trailer mover is mounted at each wheel.
Fig. 2 shows a trailer mover where the driving wheel is in slight contact with the tyre surface of the wheel, which is to be turned. Fig. 3 shows a sectional drawing of a trailer mover, where an actuator, which is used to move the trailer mover, is depicted. Fig. 4 shows a trailer mover in a passive state with a large space between the driving wheel of the trailer mover and the tyre surface of the wheel, which is to be turned.
Fig. 5 shows a trailer mover where the driving wheel, in relation to fig. 1 , in a nonlinear movement is moved in direction towards the tyre surface of the wheel, which is to be turned. Fig. 6 shows a trailer mover where the driving wheel, in relation to fig. 1 and fig. 2, is in mechanical contact with the tyre surface of the wheel, which is to be turned.
In fig. 1 is with 1 shown a trailer mover, which is mounted on a chassis 5, which consists a part of the foundation for a trailer, which should be able to be moved by using the trailer mover.
The trailer mover 1 is mounted in connection to a wheel 6. In fig. 1 a trailer mover 3 can in addition be seen, which is mounted to the chassis part 5 near the trailer's other wheel 6A.
The trailer mover 3 is technically a mirror image of the trailer mover 1 and is therefore encompassed by the same characteristics, which are described for trailer mover 1 .
From fig. 1 is furthermore seen that the trailer mover 1 has a side 2, which is shown on side 1 , and that the trailer mover 3 has a side 4, which corresponds to the hidden side of the trailer mover 1 , which is situated opposite in relation to side 2. In fig. 2 is shown a trailer mover 1 in a close-up picture corresponding to the side 2 in fig. 1 .
The trailer mover 1 consists of a part 12, mounted to the trailer, including for example the trailer chassis 1 1 , mounted part 12 and a movable part 26, where the driving wheel 9 is placed, where the mounted part 12 and the movable part 26 via turning joints 17,18,19,20 is connected with at least 2 parallel guys 14,15 and where the movable part 26 can be moved in relation to the fixed part 12 by activation of an actuator 27, which in one end is connected to the fixed mounted part 12 and in the other end is connected to the movable part 26.
It is furthermore seen in fig. 2 that the parallel guys 14,15 via turning joints 21 ,22 are connected with a transverse guy 16, which is also provided with a guiding track 24 for contact with a pin 25, which is connected to one end 13 of the actuator 27.
In a preferred embodiment, the trailer mover is provided with guys such as 14,15 on two opposite sides corresponding to for example 2 and 4 from fig. 1 , whereby the movement of the trailer mover is efficiently and inexpensively stabilised.
In fig. 3 is shown a sectional drawing of the trailer mover etc. from fig. 1 whereby an actuator 27 is depicted, which can be moved in relation to an end 13.
In a preferred embodiment, the end 13 is connected with the fixed trailer mover part 12 and the actuator 27 is connected with the movable part 26, whereby activation of the actuator 27 can create movement between the fixed part 12 of the trailer mover and the movable part 26. In fig. 2 is shown that the fixed part 12 is provided with a guiding track 23 for contact with the pin 25, which is connected to one end 13 of the actuator 27. Hereby, the actuator 27 and the end 13, by activation of the trailer mover, can interact mutually according to an optimum pattern of movement.
By coupling of the fixed part 12 and the movable part 26 with those in fig. 1 shown guys 14,15, the movable part 26 will in relation to the fixed part 12 perform a nonlinear movement, which will be a part of a circular arc qua the geometry of the guys 14,15 and their mounting.
Since the trailer mover's driving wheel 9 follows the movable part 26, the driving wheel will go through a nonlinear movement by contact with the tyre surface 8.
Since the tyre surface 8 is most resistant to a linear influence of force in direction of the center line of the wheel, the nonlinear movement of the driving wheel, as stated in the construction depicted in fig. 1 , will be significantly more efficient.
With the nonlinear movement, the influence of force is reduced and thereby the energy consumption for the necessary mechanical connection between driving wheel 9 and the tyre surface 8 is reduced, and the trailer mover's components must resist less force and can thereby be manufactured smaller and thereby less costly by application of identical materials.
In fig. 4 to fig. 6 is shown a sequence of different phases of the trailer mover's 1 nonlinear movement, which constitutes a part of a circular arc and which minimises the influences of force of the necessary mechanical connection between the driving wheel 9 and the tyre surface 8. Tests have shown that optimum functionality of the trailer mover can be achieved when the movable part 26 in relation to the fixed part 12 can be moved in a nonlinear way in the vertical level between 5 and 25 mm preferably 1 1 mm and in the horizontal level between 25 and 75 mm preferably 47 mm.
The invention includes application of trailer mover for moving caravans and trailers and trailers for transportation of goods, animal transport of transportation of people.
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