ES1297011U - JOINT FOR DOUBLE AXLE TRAILER (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Articulation for a double-axle trailer, characterized by an articulated structure (1) comprising; -a "U" shaped piece (4) with an extension on both sides of its base and welded to a horizontal profile (2), -a cushioning (5) fixed to the upper face of the front extension, -a hinge (6) that joins an articulated piece (7) to the free end of the rear extension, - an articulated piece (7) with a cushioning (5) on one of its faces and a free end with a hole (11) closed at the ends for two wings (Machine-translation by Google Translate, not legally binding)

Description

DESCRIPTION

JOINT FOR DOUBLE AXLE TRAILER

Description

The present invention, as its title indicates, presents a central articulation, with a damping device on both sides of the position of the turning axis that protects the chassis of the trailer from blows and an articulated support to protect the structure of the trailer from unnecessary stress. trailer.

Background of the invention

Double axle car trailers are becoming more popular in the agricultural world, especially for people with small farms. They are very practical since combined with a car they allow you to transport larger loads than with a single-axle trailer. As they are used on uneven roads and terrain, the articulation in the double axis represents an important advance.

In the state of the art, the German document DE4445612 describes some articulated solution for double axis. They are of great mechanical complexity for the simplicity of a car trailer.

Something similar occurs with the French document FR2382366 which describes a trailer for agricultural use with a double articulated axle equipped with hydraulic suspension.

The invention presents substantial improvements over what has been previously stated, it is a very simple balancing device equipped with means that reinforce the articulation and avoid unnecessary efforts and reinforcements to the structure or chassis of the trailer, especially at moments of turning and unloading.

Description of the invention

The invention described below consists of an articulated structure in the form of an inverted rocker mounted under the chassis or structure that supports the trailer box.

It consists of a "U"-shaped piece with a through hole that is mounted to a turning axis formed by a bushing welded to the bottom of the chassis and a bolt that joins the two pieces and acts as a turning axis.

At the base of this "U" it is welded to a horizontal profile at whose ends the wheels are mounted.

From the base of the "U", on both sides of it and on the surface of the horizontal profile, there is an extension on both sides of the base of the "U". Also fixed to the profile, on the surface that remains in the front part, a damping is fixed that protects from possible blows between the horizontal profile of the rocker and the chassis that supports the trailer.

An articulated piece is attached to the free end of its rear surface by means of a hinge. This articulated piece, in a normal situation, rests on the horizontal profile of the rocker, as an extension of the rear surface and in an unloaded situation it is placed in a vertical position to block the articulation of the double axis and not overload forces on the chassis of the trailer or cause unstable situations that could cause accidents.

On the upper horizontal surface in a situation of normal use another damping is mounted with the same function to avoid possible blows between the horizontal profile of the rocker and the chassis that supports the trailer. This articulated piece at its free end has a hole formed by two lateral wings that embrace the lateral walls of the horizontal profile to prevent vibrations.

This mobile part in the unloaded position fits and embraces the profile of the chassis located under the trailer.

The damping can be a solid piece made of a deformable material, a spring or a combination of both.

To reinforce the articulated structure at times of twist, the walls of the "U" can be extended and embrace the profile that forms the cassis under the trailer.

All this articulated structure, damping and locking is mounted on both sides of the trailer.

All information referring to examples or embodiments forms part of the description of the invention.

Description of the figures

In order to better understand the object of the present invention, a preferential practical embodiment of the same has been represented in the attached drawing.

Figure 1.- Shows a profile view of the trailer (9) where the different elements that make up the articulated structure (1) can be seen in the unloading position.

Figure 2.- Shows a front view of the articulated part (7) in a vertical position.

Preferred embodiment of the invention

The double axis articulation, object of the present invention, is shown in Figure 1, the trailer box (9) is shown in the unloading position with the hydraulic cylinder (10) extended. Under it, an articulated structure (1) is mounted as an inverted rocker, mounted under the chassis (3) on which the trailer body (9) rests. Under said chassis (3) a bushing is welded to which embraces a "U" shaped piece (4) with a through hole and which is passed through by a bolt that acts as a turning axis. The base of the "U" shaped piece on both sides has an extension. This "U" shaped piece is welded to a horizontal profile (2) on the horizontal face seen from the frontal extension of the "U" a cushioning (5) is fixed. An articulated piece (7) is added at the free end of the rear extension and with a hinge (6) as a joining and turning element. The articulated piece (7) appears raised in a vertical position, to show how it blocks the articulated structure (1) to prevent any unstable situation from occurring during unloading that could cause undesired events or structural damage due to stress. This articulated piece (7) embraces the structural profile of the chassis on which the trailer box (9) rests. Another damping (5) is mounted on this articulated piece (7) on the visible surface. The wheels (8) are mounted at the ends of the horizontal profile. This articulated structure is mounted on both sides of the chassis (3) under the trailer box (9).

Figure 2 shows the articulated part (7) in a front view where a section of the extension of the rear base of the "U" part (4), the hinge (6) and the damping (5) can be seen. Noteworthy in this articulated part is the hole (11) closed at its ends by walls or wings (12) designed to embrace the profile that makes up the chassis (3) on which the trailer box rests.

The person skilled in the art will easily understand that he can combine features of different embodiments with features of other possible embodiments, as long as such a combination is technically possible.

Claims (1)

1 - Articulation for a double-axle trailer, characterized by an articulated structure (1) comprising; -a "U" shaped piece (4) with an extension on both sides of its base and welded to a horizontal profile (2), -a damping (5) fixed to the upper face of the front extension, -a hinge (6) that joins an articulated part (7) to the free end of the rear extension, - An articulated piece (7) with a cushioning (5) on one of its faces and a free end with a hole (11) closed at the ends by two wings. 2 - Articulation for a double-axle trailer according to claim 1, characterized in that the "U" part (4) extends in height and embraces the structural profile that makes up the chassis (3) where the trailer box (9) rests. 3 - Articulation for double-axle trailer according to previous claims characterized in that the damping is a solid of a flexible material, a spring or both. 4 - Articulation for a double-axle trailer according to previous claims, characterized in that the articulated piece (7) in a horizontal position rests on the horizontal profile. 5 - Articulation for a double-axle trailer according to previous claims, characterized in that the articulated piece (7) in a vertical position, embraces the profile of the chassis (3).