DE202010008603U1 - Support leg device for semi-trailer or the like - Google Patents

Abstract

Support leg device for semitrailers or the like with at least one preferably telescoping support leg (1, 1 '), wherein the support leg (1, 1') has a fastening head (11) to which it is attached to the semitrailer and a load balancing device (2) on the support leg (2). 1, 1 ') is provided, which laterally compensating movements on the support leg allows for load differences, characterized in that as load compensation device (2) the support leg (1, 1') at its attachment head (11) about a substantially horizontal and perpendicular to the longitudinal extent the semitrailer arranged pivot axis (21) is pivotally mounted.

Description

The The invention relates to a support leg device for semi-trailers or the like with at least one preferably telescopic Support leg, taking the support leg has a mounting head to which it attaches to the semitrailer is and a load balancing device is provided on the support leg, the laterally compensating movements on the support leg in the event of load differences allows.

Outrigger devices or seat posts called, serve for support from saddled semi-trailers or are also in rigid drawbar trailers in uncoupled state used to accommodate the support loads and later on Allow coupling again. Such support leg devices have at least one, but usually two preferably telescopic support legs on, between a folded or retracted position for the Driving operation and a deployed or extended position for supporting of the trailer / trailer are designed adjustable. In the extended or unfolded supporting position stands the support leg firmly on the ground and directs the loads in the underground. Now if the semi-trailer or trailer is loaded or unloaded or longer Stopping time the air suspension of the semitrailer sinks in, changes by the relative movement on the chassis of the semitrailer / trailer of the Distance between the braked wheels of the trailer and the attachment point of the or the support legs by a few inches.

For this are in the State of the art various load balancing known. For example are support legs known on semi-trailers, with a steel wheel on the Support the ground. Such steel wheels However, have the disadvantage that the support surface is relatively small, which fast damage of the parking space surface covering can arise. Furthermore, there is a risk that the support leg with its steel wheel sinks deep into the ground and thus a renewed coupling makes a tractor on the semi-trailer difficult or even impossible. Furthermore, so-called pendulum feet are known at the lower end of the support leg pivotable about an axis perpendicular to the direction of load balance movement are arranged, thus allowing a load-compensating movement of about +/- 80 mm. Are similar so-called "module feet" formed, which also allow lateral displacement of the footplate relative to the support leg.

adversely in these devices is that with appropriate deflection the load balancing means, namely Pendulum foot or module base, an uneven load on the resting on the ground Transfer foot plate becomes. There is thus the danger that, despite the larger footprint of the foot plate an undesirable Sinking, at least in the area of higher load on the footplate he follows. In addition, the range of motion for load balancing at module feet and Pendulum feet in the Usually to a maximum of +/- 80 mm limited.

outgoing From this prior art, it is an object of the invention, a Indicate support leg device, in spite of a relatively large one Movement range for load balancing always a balanced central Strain on the foot of the support leg is reached.

Is solved This object with a support leg device mentioned above in that as a load balancing device, the support leg at its attachment head around a substantially horizontal and perpendicular to the longitudinal extent the semitrailer arranged pivot axis is pivotally mounted. In a change the load situation on the semi-trailer and / or when lowering The air suspension of the semitrailer can now be the support leg device resulting lateral movements of the semi-trailer in the direction of his longitudinal extension without the support leg over the Ground is dragged or bent.

If the support leg has a spring preload in the mounting head, so that the outrigger without external force in the pivoting area in its middle position ensures that when parking the semi-trailer / trailer and parking on the support leg device the support legs too Both sides can be swung out depending on load change. Preferred is the pivoting range around the middle position of the support leg in the range +/- 5 ° degrees to +/- 10 degrees, especially +/- 7 degrees.

Thereby, that the support leg a load distribution foot to load-distributing installation on the ground at the lower end having the load distribution foot about a horizontal and vertical to the longitudinal extent the semitrailer arranged pivot axis movably mounted is is enabled that the load distribution foot with its entire surface always gets up on the ground and thus optimal load distribution ensures. Thus, even at maximum pivoting of the support leg no uneven load transferred to the ground.

An embodiment of the invention will now be described with reference to the accompanying drawings.
It shows:

1 a support leg device in a spatial view in the extended state,

2 in the 1 shown support leg device in a side view, deflected to one side and

3 in the 2 illustrated support leg device, deflected to the other side.

In 1 is a support leg device in a spatial view in an embodiment with a pneumatic / hydraulic actuator for extending and retracting both support legs 1 . 1' shown in extended state. Because the two support legs 1 . 1' are identically formed, hereinafter only the technical features of a support leg 1 explained.

The support leg 1 has a mounting head 11 on, which is fixed to a side member of a semi-trailer, which is not shown here. At the attachment head 11 is then the telescopic support leg consisting of an outer tube 12 and a lower, inner tube 13 , when retracting the support leg device in the outer tube 12 is drawn. At the lower end of the telescopic inner tube 13 is a load distribution foot 14 with large footprint pivoting about a pivot axis 15 arranged.

In 2 is the support leg 1 shown in a side view, wherein the semitrailer is moved due to load-balancing movements by an amount of about 100 mm in drawing planes to the left. In 3 the same situation is shown with a semitrailer shifted to the right in the drawing plane to the right. In the fastening head 11 is a load balancer 2 intended. The load balancing device 2 has an axis of rotation 21 on, which is arranged substantially horizontally and perpendicular to the longitudinal extent of the semitrailer. The rotation axis 21 is orthogonal to the plane of the 2 and 3 , Accordingly, the support leg 1 around the axis of rotation 21 to be pivoted in drawing plane. The pivoting range is provided by stops provided on both sides 23 limited. The attacks 23 . 23 are in the mounting head 11 designed as contact surfaces.

Furthermore, the load balancing device 2 a feather 22 on, that's about the axis of rotation 21 pivotally mounted support leg 1 without external force in its middle position, as in 1 presented, holds. Next is in the 2 and 3 seen that, despite the deflection of the support leg 1 around the axis of rotation 21 always the load distribution foot 14 can rest with its entire footprint on the ground, since it is about pivot axis 15 can move accordingly. The pivot axis 15 is also orthogonal to the plane of the drawing 2 and 3 aligned.

The support leg device according to the invention allows lateral compensation movements of the semitrailer in the direction of its longitudinal axis (direction of travel) with movement amounts of +/- 100 mm by the load compensation device integrated therein in the illustrated embodiment. This corresponds to a pivoting of +/- 7 ° degrees to the axis of rotation 21 , Thus, it is safely avoided that subsequent to the parking of a semi-trailer on the support leg device subsequent load changes and / or a decrease in the air suspension of the trailer results in a displacement or bending of the support leg device. In contrast to the known load balancing devices, while maintaining the largest possible contact surface on the ground, an always equally loaded support is ensured.

1, 1'

outrigger

11

fastening head

12

outer tube

13

inner pipe

14

Lastverteilungsfuß

15

swivel axis

2

Load balancer

21

axis of rotation

22

feather

23

attack

Claims (4)

Support leg device for semi-trailers or the like with at least one preferably telescoping support leg ( 1 . 1' ), wherein the support leg ( 1 . 1' ) a fastening head ( 11 ), to which it is attached to the semitrailer and a load balancing device ( 2 ) on the support leg ( 1 . 1' ) is provided, the laterally resulting compensating movements on the support leg allows for load differences, characterized in that as load balancing device ( 2 ) the support leg ( 1 . 1' ) at its mounting head ( 11 ) about a substantially horizontal and perpendicular to the longitudinal extent of the semitrailer arranged rotary axis ( 21 ) is pivotally mounted. Support leg device according to claim 1, characterized in that the support leg ( 1 . 1' ) in the fastening head ( 11 ) a spring preload ( 22 ), so that the support leg is in the middle position in the pivoting area without any external force effect. Support leg device according to claim 1 or 2, characterized in that the pivoting area about the central position of the support leg ( 1 . 1' ) in the range +/- 5 degrees to +/- 10 degrees, in particular +/- 7 degrees. Support leg device according to one of the preceding claims, characterized in that the support leg ( 1 . 1' ) a load distribution foot ( 14 ) for load-distributing installation on the ground at the lower end, wherein the load distribution foot ( 14 ) about a horizontal and perpendicular to the longitudinal extent of the semitrailer arranged pivot axis ( 15 ) is movably mounted.