Height-adjusted support for semitrailers or similar facilities

FIELD: transport.

SUBSTANCE: proposed support incorporates fixed outside tubular body housing inner tube translating there inside. The aforesaid outside tubular trough-shaped body has U-shaped section with its bends' ends furnished with two flanges coming outward parallel to the U-shaped section back. Open part of the said U-shaped section is closed by rear wall (15) to form a guide duct for the aforesaid inner tube (13).

EFFECT: simpler design.

9 cl, 5 dwg

 

The technical field to which the invention relates.

The invention relates to a height-adjustable (sliding) support for semi-trailers and other Such bearings usually come in pairs in front of the trailer.

The level of technology

The so-called breakaway bearing S 2000 described in the prospectus 098060 company Haacon, D-97896 Freudenberg.

The outer tubular body for this support, which moves and draws the inner tube of square cross section, consists of a longitudinal trough-shaped profile, the front side of the knees which are welded with approximately the same length, solid and serving both sides of the bolt-plate.

In this construction, the resulting bending forces and above all the huge efforts of the shift that occurs when removing the reference load should almost exclusively in the power flow transmitted through the welded seams first to bolt the plate before they pass through the threaded connection will be transferred to the chassis of the trailer. To achieve the necessary and advertised Flexural rigidity of the welded joint should be performed by respectively metre thick load-bearing welded joints, which leads to high production costs from the point of view of welding equipment.

This breakaway support has a vertical edge zones bolt-on plate with ebaystore one row of holes for individual height fixing. Each of the rows of holes has a bolt hole, which is more than twice the number required for actually fixing holes, so that more than half of all holes and/or over placed during Assembly mounting bolts remains unused, i.e. free, and besides having conspicuous from the front side of thick welds additionally negatively affect the appearance of support.

Disclosure of inventions

The basis of the invention lies in the task of creating support for semi-trailers with the outer tubular body, which, if possible, would have no bearing welds and it would be optimal for the design, cost and design.

According to the invention proposed height-adjustable support for semitrailers or the like (transport) vehicles containing still posted the outer tubular body and an inner tube installed in it with the possibility of longitudinal movement up and down by the drive mechanism. The outer tubular body consists of a trough-shaped profile with a U-shaped section, from all tribes of which is parallel to the backrest leave out two rectangular shelves and which is closed between the shelves vertical solid back wall (mostly by welding) to form the guide channel to put it inside the second pipe, which may be made primarily of standard tube with a square cross section.

A special advantage of this design is that the trough-shaped profile as a one-piece bearing parts perceives the greater part of the above loads and displays effort is not the same as before, adversely through weld on bolt-on plate, and directly using the screw connections on the frame of the trailer. This means that to accommodate the rear wall requires only slightly loaded and therefore thin welds, which after installation of the support is essentially not visible.

Another idea of the invention consists in that the bolt holes in the manufacture are not free, but only to outline the perforation and only when installing bearings to break through or break depending on necessity, i.e. locations along the height of the holes connected to the chassis of the semitrailer coupling, in order to introduce the bolts. In order to release the bolt holes with their edges in the manufacture of the outer tubular body supports using stamping only make an incision that it is advisable to back at the mounting side. This method provides high flexibility for the individual to fix the foot, so then available, i.e. Neapolitan is e, the holes in the shelves are not visible.

The application of the trough-shaped profile provides other benefits. For example, the back wall, when viewed in vertical longitudinal section, curves in the upper end zone of the outer tubular body supports back so that there are over mainly square guide channel occurs enlarged cross-section, which when assembling the parts of the gear mechanism can be beneficial.

With the reduced budget, the thickness of the wall of the trough-shaped profile, such as the transitions from the knees to the shelves, can be minted angular corrugations that an optimum use of the material imparts rigidity.

According to the above, in preferred versions of the invention, the trough-shaped profile may be in the form of pressed parts.

In the upper area of the outer tubular body portion rear wall bent outward, and the cross section of the outer tubular body in this area has the extension.

Trough-shaped profile and/or the rear wall have local extruded hollows.

On the rear edges of the trough-shaped profile, bordering on shelves made amplification of angular corrugations.

In each shelf trough-shaped profile made a vertical row of bolt holes or area of bolt holes, in which the profile is in the manufacture of a support pretreated with easy subsequent removal of such zones of material of the profile with the formation of the bolt holes. Bolt holes can be made with cut, essentially, through the edges with the possibility of easy removal (knockout or breaking) the remaining material to release the bolt holes.

Brief description of drawings

Figure 1 - front view of a support according to the invention.

Figure 2 is a side view of a support figure 1.

Figure 3 is a section along the line A-a in figure 1.

Figure 4 is a section similar to figure 3 of the known supports.

5 is a front view of a support according to the invention similar to figure 1, but installed deeper.

The implementation of the invention

Depicted in figure 1-3 and 5 bearing 10 pairs mounted on the chassis of the trailer 11 in its front part, and in the transport position it is pushed, i.e. is in a shortened state. Before the semi-trailer 11 will be when separated from the tractor, a support 10 is put forward.

Since the supports 10 of each pair of the same design described only one bearing 10.

Bearing 10 includes an external tubular body 12 and installed it with the possibility of longitudinal movement of the inner tube 13.

The outer tubular body 12 consists of a trough-shaped (having a U-shaped section formed "back" and the two radiating parallel "knees") profile 14 with two opposite shelves 14a and one rear wall 15, welded with a trough-shaped profile 14, so that it formed nab alausi channel of square cross section, in which with a small gap also placed a square inner tube 13. Trough-shaped profile 14 is supplied to the rigidity vertically remote from each other an angular corrugations 14C.

In each shelf 14a made a number of vertical bolt holes 14b, previously cut by stamping.

The support 10 is fixed by means of shelves 14a her outer tubular body 12 by bolts 16 on the semi-trailer 11 and a back longitudinal 17 and 18 cross braces.

On the lower end of the inner tube 13 is fixed to the sole 19 for bearing on the ground.

In support 10 in this exemplary embodiment of the invention is integrated actuator with lead screw 20, whereby to move the inner tube 13 or raise and lower the load.

For this purpose above the lead screw 20 in the support 10 is integrated transfer mechanism including a drive shaft 21, is installed on the handle 22, and a driven shaft 23, through which by means of the coupling shaft 24 also lead opposite the support.

Figure 4 for comparison, similar to figure 3, shows a section of a support in accordance with the above-mentioned prospectus, clearly explaining the already described disadvantages of this support.

U-profile 25 with a thick load bearing welds 26, which are under high load at full power flow and must take all efforts welded to p is evincive plate 27. Only through bolt-on plate 27 efforts through bolts 28 are displayed on the chassis of the trailer 11.

1. Height-adjustable support for semitrailers or similar products containing still posted the outer tubular body and an inner tube installed in it with the possibility of longitudinal movement up and down by a drive mechanism, wherein the outer tubular body (12) consists of a trough-shaped profile (14) with a U-shaped section, from all tribes of which is parallel to the backrest leave out two shelves (14a) and which is closed between the shelves (14a) vertical solid rear wall (15) forming a guide channel for the inside of the inner tube (13).

2. Bearing according to claim 1, characterized in that the trough-shaped profile (14) is pressed the item.

3. Bearing according to claim 1, characterized in that in the upper zone of the outer tubular body (12) of the rear wall (15) bent outward, and the cross section of the outer tubular body (12) in this zone has an extension.

4. Bearing according to claim 1, characterized in that the trough-shaped profile (14) has a local deepening.

5. Bearing according to claim 1, characterized in that the rear wall (15) has a local deepening.

6. Bearing according to claim 1, characterized in that the rear edges of the trough-shaped profile (14), bordering on the shelves (14a), made by amplifying the corner corrugations (14C).

7. Bearing according to claim 1, characterized in that each shelf (14a), the trough-shaped profile (14) performed a vertical row of bolt holes (14b).

8. Bearing according to claim 6, characterized in that the shelf (14a), the trough-shaped profile (14) is the area of bolt holes (14b), in which the profile in the manufacture of a support pretreated with easy subsequent removal of such zones of material of the profile with the formation of bolt holes (14b).

9. Bearing according to claim 7 or 8, characterized in that the bolt holes (14b) completed with a slotted essentially through the edges with the ability to easily remove the remaining material to release the bolt holes (14b).



 

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