DE3324437A1 - Adjustable rung straps for long material - Google Patents

Abstract

The invention relates to the control of the mobility of rung straps for transporting long material, with particular reference to the transport units in which the actual payload constitutes at the same time the connection between the lorry power unit and the trailer. The device according to the invention for rung straps for long material is based in its main claim on the fact that by means of an adjustment device the position of the rung strap can be corrected with respect to the vehicle as a function of the terrain, as a result of which hitherto customary and inconvenient bracings between the load and the rung strap on the one hand and the rung strap and the vehicle on the other are avoided.

Description

GENERAL DESCRIPTION

The invention is essentially concerned with storage and mobility of stool stools.

Stake stools are especially useful for transporting long material and in especially known for long timber transport.

The stanchion stool usually consists of a lower cross to the direction of travel arranged stool (1) and two laterally attached to this stool Stanchions (2). A load (13), e.g. tree trunks, lies on the stanchion stool are fixed and held by the stanchions to the side. See for explanation the cross-sectional drawing of Figure 1 showing the loading and delimitation of a long timber load in the stool area, u.z. seen in the direction of travel represents.

In connection with the invention must be taken to the restrictive fact it should be noted that only long material or. Long timber transport vehicles addressed where the load as such represents the connection between the truck and the trailer. That is, starting from the truck stanchion bolster via the load (13) is the trailer stanchion bolster and thus also the trailer is connected to the truck as a pulling unit.

In hindsight, the explanation and the variation of different will be discussed like long materials are dispensed with and only to simplify the long timber transport Reference is made as this mode of transport is essentially all for the sake of explanation and the invention addresses related problems.

As can be clearly seen from Figure 1, the load (13) (round timber long material) pressed or pressed against the side stanchions (2). As a result, the The stanchion stool, seen as a whole, is clamped or, better said, wedged with the load is. That means that the side stanchions can hardly be seen in the direction of travel move the charge and consequently form a unit with the charge, which is otherwise for the trailer steering coupled therewith is regarded as desirable, with the steering device as such was only mentioned in this context for Explanation of the invention, however, can be excluded.

On the other hand, this described clamping effect is between stanchion bolsters and charge also a negative phenomenon that comes into effect on uneven terrain occurs and circumventing it is an essential feature of the invention.

The negative phenomenon already mentioned is shown in FIG. 2 and FIG 3 and described below: If, for example, a log pull on a Load the dome (see Figure 2), then, as can be seen, the truck (3) is forward inclined and the trailer (4) inclined backwards. The stanchions (2) are each before and after the loading process perpendicular to the chassis. After loading have the stanchions (2) with the load (13) in this inclined position depending on the terrain jammed and form an angle (5) and (6) to the load. Will now be the complete Then brought the log train from the top to a level roadway (see Figure 3) want the stanchions (2) towards the load (13) to keep their firmly clamped position and consequently form an angle (5) or (6) to the respective vehicle perpendicular.

In this context it must be added that it is explanatory There are essentially only two stanchion and stool mountings on the vehicle. at a rigid connection must in the aforementioned case with force against the stanchion (2) the cargo will be displaced, which will either damage the cargo or cause deformation the stanchion leads.

With the second alternative with an elastic stanchion bearing, must the spring-loaded bearing absorb the rotation by the angle (5) or (6).

However, elastic stanchion bearings must be centered. These Centering of the stanchions must not be too small in terms of strength, because the stanchion must be held securely vertically when empty and when loading and it has in addition, in connection with the load, it can also absorb starting and braking torques.

This means that with elastically mounted stanchions, e.g. a Loading according to Figure 2 and a subsequent driving position, according to Figure 3, over the springs (22) and (23) a moment of force (7) on the truck and a moment of force (8) is initiated on the trailer via the stanchions. The moment (7) leads to an additional load on the front of the truck (9) and to relieve the load on the rear of the truck (lo). In the case of a trailer, the torque (8) relieves the load on the trailer's front axle (7) and an additional burden on the trailer Rear axle (12).

If the complete Langholzzug in contrast to Figure 2 instead of a crest in a trough is loaded, then this inevitably leads to level Roadway compared to Figure 3 to opposite moments of force.

Introduced by the moments of force (7) and (8), whether positive or negative, undesired additional or relief forces are generated on the individual axes, which can lead to the inability to drive the train. Exactly this negative appearance is now turned off by the idea of the invention in a meaningful and simple way.

Since with off-road loading and off-road driving, as already explained, Very large angular movements are required of the stanchion bolster to avoid this of the aforementioned disadvantages, a way to be found is the stanchion-bolster angular movement beyond the mobility of elastic elements to increase force-free and if necessary to steer without force.

In the following description of the invention and its function, the Solution explained in terms of its effect and function.

Adjustable long material - stanchions - stool Description of the invention and function In Figure 4 is an inventive adjustable long material stake stool in Section, transverse to the direction of travel, drawn in a simplified way that the essentials Features of the invention and functions are clearly visible.

This schematic drawing can be used for both the truck (3) and the Trailer (4) are used, which is why these two units are separated will only be addressed in the following description if necessary.

The rigid stanchion stool is still excluded because this differs from the elastic stanchion stool essentially only by eliminating it of elastic intermediate elements, represented by us as springs (22) and (23), differs. The freedom of movement of the adjustable long material stanchion stool is shown optically via the center line (19) to the center line (21). To the invention To be able to explain the effect and innovation in more detail, this scope of movement must be in detail to be examined more closely.

In the case of a rigid and inelastic stanchion stool, there is movement of the stool (1) and consequently also the stanchions (2) towards the vehicle (3) or (4) seen, not possible because elastic elements, such as springs (22) and (23) miss.

In the case of elastic stanchion stools, the stool (1) can move around its Turn the pivot point (29) as far as the springs (22) and (23) allow. In this case the two border center lines are marked with (16) and (17). This freedom of movement is often not enough, especially when driving off-road.

The invention now increases this freedom of movement in which the Pivot point (29) is also used as a double pivot point for a pivot part (25). The springs (22) and (23) are now on the one hand on the stool (1) and on the other hand Pivoting part (25) attached or stored, i.e. the stool (1) and its stanchions (2) move elastically stabilized by the springs (22) and (23) with the pivoting part (25).

The movement of the swivel tail (25) is, for example, controlled by a cylinder (26), whose piston rod engages in the pivot bearing (24), triggered. This takes place the actuation of the cylinder via a switching valve (28), which is directly, remotely controlled and can also be operated automatically.

An extension of the inventive concept is that the control the switching valve (28) can take place via terrain-dependent vehicle movements, where the differential movement between the vehicle and the stool is used, among other things could be. Furthermore, an overpressure valve built into the switching valve (28) can be used be set in such a way that this happens automatically with a certain stanchion and bolster load responds and thus not only an overload of the stanchion bolsters of the vehicles and also avoids the axes.

For the sake of completeness, there is also a so-called switching valve float position addressed, with which, under certain circumstances, the stanchion stool swings without force is possible.

A limitation of the freedom of movement with the new adjustable The stanchion bolster is due to the maximum piston rod movement in the pivot bearing (24) given, the pivot bearing moves by the adjustment angle (27) and as an end position reaches the center lines (18) or (20).

The stanchion bolster is now elastically fixed in these end positions and can, in turn, take advantage of springs (22) and (23) from the center line (18) swing out towards the center line (17) or (19), spring-loaded. On the opposite side, this is done in the same way, starting from the center line (20) to the center line (16) or (21).

I.e. from the central center line (15) the stanchion stool can, depending as required, largely stepless and force-free up to the center lines (18) or (20) can also be swiveled out.

The elastic stanchion stool bearings then allow another, however powerful additional movement to.

Of course, the stool can also be controlled purely mechanically and done by hand, using known aids such as socket pins, racks, Transmission, etc. can replace the hydraulic system mentioned. It is important here, the force-free adjustment possibility according to the invention, the individual and exemplary addressed in connection with the hydraulic control and in an easily understandable way was explained.

Elastic elements such as springs (22) and (23) produce at increasing movement of the stanchion stool, forces that ultimately also affect the Vehicles are transmitted and this is precisely what is undesirable.

In this context I would like to point out the resulting negative axle overloads or axle loads referred to.

Due to the force-free adjustment option, this becomes a negative phenomenon considerably weakened or, depending on the type of control, even completely switched off, which ultimately represents the state of the art, inter alia. in connection with road safety, Significantly improved, especially for long material trains.

To conclude the description of the invention and its function, let me add that Automatic adjustment of the stanchion bolsters depending on the vehicle movement addressed in detail and explained using a control option in FIG.

The extended switching valve lever (31) is attached via a linkage (30) actuated directly by the relative movement of the stool (1) to the vehicle (3) or (4) and thus controls the cylinder (26) via the switching valve (28), which then in turn readjusts the pivoting part (25) towards the stanchion bolster so that the springs (22) and (23) are relieved as much as possible and come into the middle position, by a Longitudinal slot (32) in the linkage (30) can be used to control the switching valve lever (31) can be regulated depending on the travel of springs (22) and (23).

Figure 5 shows a one-sided stanchion stool movement with a compressed Spring (22), shortly before the switching valve lever movement, which then leads to the readjustment reaction of the pivoting part (25) leads in the direction of the arrow (33).

That such an automatic readjustment is extraordinary when driving off-road The advantage should be mentioned as well as the possibility of the truck and trailer stanchion stool also in mutual dependence or in dependence on braking and starting torques or to switch to axle load torques.

Finally, another advantage should be mentioned. About the invention The stanchion bolster can be adjusted immediately before loading, depending on the terrain be aligned towards the load so that there are no detrimental effects on a level roadway Angular position towards the load is given.

Adjustable long material - stanchions - stool Explanation of drawings Figure 1 shows a long material stanchion stool seen in the direction of travel, with a payload (13) mounted on a vehicle (3) or (4).

The payload (13), shown in this case as tree trunks, lies on the stool (1) and is held on the left and right by the stanchions (2).

Figure 2 shows a Langholzzug in side view, which is on a knoll was loaded and its stanchion due to the top loading at an angle (6) to Payload (13) stand.

FIG. 3 shows the log truck loaded according to FIG. 2 on a level roadway, whereby the angle (6) to the charge (13) is retained and at the same time now also the Angle (6) to the vehicle perpendicular comes into effect.

FIG. 4 shows an elastic one supported by springs (22) and (23) Stake bolster with a hydraulic adjustment device. The whole thing in terms of strength balanced middle position.

Figure 5 shows the stanchion stool shown in Figure 4 with already to the left biased stanchion (see vehicle 3, from Figure 3) and slightly to the left swiveled-out swivel part (25) immediately before a further adjustment in Direction of arrow (33). The adjustment takes place via the linkage (30) and by the Switching valve lever (31), seen over the vehicle differential movement towards the stool. The adjustment device shown in FIG. 5 represents a hydraulic type of solution represent.

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Claims (1)

Adjustable long material stanchion stool 7 Claims Claim S Adjustable Long material stanchion bolsters for mounting on truck-trailer combinations, mainly suitable for holding long material and logs, with the load as such takes over the actual connection between truck and trailer, characterized by: that the stanchion stool can be adapted to uneven terrain by means of an adjustment device can be corrected and adjusted in their angular position to the vehicle. Claim 2 adjustable long material stanchion stool according to claim 1 characterized in that the adjustment device is based on different The angular positions of the stanchion bolsters to the vehicle can also be locked with the vehicle. Claim 3 adjustable long material stanchion stool according to claim 1 + 2 characterized: that the locking process between stanchion bolsters and Vehicle automatically depending on various vehicle dynamic conditions, such as driving speed, braking, starting, terrain-dependent movements, controlled can be. Claim 4 adjustable long material stanchion stool according to claim 1 to 3 characterized in that the adjustment device for the stanchion bolsters, e.g. can be remotely controlled from the truck cab. Claim 5 adjustable long material stanchion stool according to claim 1 characterized in that the adjustment device to terrain-dependent differential movements reacts automatically between the chassis and rug stool. Claim 6 adjustable long material stanchion stool according to claim 1 characterized in that the adjustment device also react depending on the axle load can. Claim 7 adjustable long material stanchion stool according to claim 1 to 6 characterized: that the adjustment devices from the truck stanchion bolster and from the trailer-stanchion-bolster in terms of control in mutual dependency with one another can be coupled.