WO2006080038A1

WO2006080038A1 - Fast coupling multipurpose device for tractors and agricultural machinery

Info

Publication number: WO2006080038A1
Application number: PCT/IT2005/000138
Authority: WO
Inventors: Pasqualino Pinto; Franco Pinto
Original assignee: Pasqualino Pinto; Franco Pinto
Priority date: 2005-01-28
Filing date: 2005-03-14
Publication date: 2006-08-03
Also published as: ITFO20050001A1

Abstract

The invention named “Fast Coupling Multipurpose Device for Tractors and Agricultural Machinery” has been designed in order to simplify the coupling between trailing-type farm implements and tractors that have to tow them. The device consists basically of two parts: a first one (A), attached to the rear of the tractor, having to be tilted backwards and inserted into a second one (B), attached to the front of the trailed implement.

Description

FAST COUPLING MULTIPURPOSE DEVICE FOR TRACTORS AND AGRICULTURAL MACHINERY

TECNICAL FIELD OF THE INVENTION The main application field of this invention is the agricultural one.

Specifically, it is intended for all those machines that have to be mechanically coupled with tractors for power to perform the operations they were designed for.

BACKGROUND OF THE INVENTION

The device consists of a part, which has to be attached to the rear of the tractor. This part is mobile on its horizontal axis, in order to be tilted backwards and inserted into a second part, vertical and stationary, attached to the front of the machine that has to be lifted from the ground and coupled with the tractor. This second part is provided with seats for couplers allowing to fasten tightly one part to the other.

With regard to possible historical precedents, we have no information about precursors with similar features.

BRIEF DESCRIPTION OF THE DRAWINGS For a better understanding of the technical specifications of this invention, two plates with drawings have been attached. These plates have an explanatory and non-restrictive purpose and illustrate the following:

Figs. 1 and 2 are a side and front view of the two parts of he device.

Fig. 3 is an enlarged cutaway view of the pivot pin seat. Fig. 4 is a spread out flat view of the pivot pin safetying semi cylinder.

Fig. 5 is a spread out flat view of the safetying semi cylinders seats in the front plates.

Fig. 6 is a spread out flat cutaway view of the securing device operating together with the safetying semicylinder.

Figs. 7 and 8 are a side and front view of the two coupled parts of the device.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

As shown in the drawings, this device consists of a supporting part (A), which has to be inserted into and tightly coupled with a 0 supported part (B).

Referring to figs. 1 and 2, the supporting part consists of a vertex unit (1) originating an upright tooth (2), coupling plates (3) and divergent profiles (4) where square section bars (5) and a brace beam (6) are welded. Forked ends (7) are welded to the section bars (5) 5 bottom end. As shown in fig.3, these forked ends are provided with seats (8) for the pivot pins (9) and their safetying semicylinders (10) (see fig. 4).

The safetying semi cylinders are fastened to their seats by snap rings (11) and are enabled to pivot on their longitudinal axis by 0 manually operating the rods (12).

The pins (13) and (14) are the points of attachment allowing to couple the supporting part (A) with the tractor by fastening its lower part to the bars (15) and its upper part to the hydraulic piston (16). The supporting part can then be tilted backwards to simplify its 5 insertion into the part of the device fastened to the farm implement that needs to be coupled with the tractor. '

The structure of the supported part (B) is suitable for receiving the supporting part (A) and is characterized by points of attachment having a variable position in order to allow the using of the supported 0 part (B) with different agricultural machinery. As shown in figs. 1 and 2, the supported part structure consists of a head plate (17) originating two divergent angles (18) and vertical plates (19) that join to a reinforcing forming bar (20), which is welded behind the angles and joins the blocks (21) welded at the end of these angles. The blocks originate the front plates (22), where the seats (23) are, and the back plates (24), which hold the square bars (25) with cross holes, fastened with bolts (26) to the back plates in order to allow different positions during their extension.

The square bars ends (25) support angled blocks (27) joined with bolts (28). Here the ball joints (29) are welded, serving as the lower points of attachment that allow to fasten the supported part (B) to the machine that has to be coupled with the tractor. The upper point of attachment is one of the holes in the vertical plates (19).

As shown in fig. 5, the front plates (22) originate the seats of the pivot pins (9) and their safetying semicylinders (10) (see fig. 4). The securing devices (31) seats (30) are welded on the external sides of the two external plates. As shown in fig. 6, the securing devices are thrust by springs (32) and fastened by screws (33).

The two parts (A) and (B) (see figs. 7 and 8) are coupled by inserting the tooth (2) of the vertex unit (1) into the hole of the head plate (17) and the safetying semicylinders (10) into the seats (23) in the front plates (22). To complete the coupling of the two parts and therefore operate the securing devices (31) locking the pivot pins in this position, the semicylinders have to be hand turned with the rods (12). This simple structure allows to couple agricultural machinery with tractors from the drivers' cab in a very easy and firm way.

Reversing after having inserted the supporting part (A) of the device between the angles of the supported part (B), serving as guides for the insertion of the tooth (2) into the hole of the head plate of the supported part (B), the first stage of the coupling process will be accomplished operating the hydraulic piston that moves vertically the supporting part (A). The supported part (B) will then be towed and perfectly coupled with the supporting part (A). At this point the operator can get off the tractor and complete the coupling of the two parts operating the pivot pins with the rods (12).

Claims

1) "FAST COUPLING MULTIPURPOSE DEVICE FOR TRACTORS AND AGRICULTURAL MACHINERY", a device for an easy coupling between tractors and trailing-type farm impiements that consists basically of two parts, designed in a way that it allows the insertion of the part attached to the tractor into the part attached to the trailed implement just reversing the tractor, and the subsequent coupling, thanks to a mechanical process providing, by hydraulic servomechanisms, the tractive power necessary for the part attached to the trailed implement to join the structure of the part attached to the tractor and for the coupling of the other mechanical reciprocal securing devices of the two parts in order to guarantee a firm coupling that has to be completed manually or using other auxiliary servomechanisms.

2) "FAST COUPLING MULTIPURPOSE DEVICE FOR TRACTORS AND AGRICULTURAL MACHINERY" as claimed in the previous claim and further characterized by a particular design (see figs. 1 and 2) that consists of a supporting part (A), which can be attached to the tractor and has to be inserted from the bottom upwards into the supported part (B), with a caster angle between its mid-plane (c) and the supported part (B) mid-plane (d) between 5° and 45°.

3) "FAST COUPLING MULTIPURPOSE DEVICE FOR TRACTORS AND AGRICULTURAL MACHINERY as claimed in the previous claims and further characterized by having a supporting part (A) structure (see figs. 1 and 2) that consists basically of a vertex unit (1) originating an upright tooth (2), coupling plates (3) and divergent profiles (4) where square section bars (5) and a brace beam (6) are welded. Forked ends (7) are welded to the section bars (5) bottom end. As shown in fig.3, these forked ends are provided with seats (8) for the pivot pins (9) and their safetying semi cylinders (10) (see fig. 4).

4) "FAST COUPLING MULTIPURPOSE DEVICE FOR TRACTORS AND AGRICULTURAL MACHINERY" as claimed in the previous claims and further characterized by having a supporting part (A) (see fig. 1) that has to be attached with pins (13) to the bars (15) in the lower rear part of the vehicle, along a cross axis perpendicular to the vehicle vertical mid-plane and with the possibility of oscillating along the axis, and with a pin (14) to the hydraulic piston (16), in the upper part of the vehicle, connected to and directed by the tractor, since it can be operated from the driver's cab during the different coupling stages.

5) "FAST COUPLING MULTIPURPOSE DEVICE FOR TRACTORS AND AGRICULTURAL MACHINERY as claimed in the previous claims and further characterized by having different seats (8) (see fig. 2) located in the section bars. The seats longitudinal axes are perpendicular to the section bar medial axis and convergent with the vertical medial axis of the supporting part (A), to which they belong.

6) "FAST COUPLING MULTIPURPOSE DEVICE FOR TRACTORS AND AGRICULTURAL MACHINERY" as claimed in the previous claims and further characterized by having a supported part (B) structure (see figs. 1 and 2) that consists of two angles (18) converging in the head plate (17), which originates vertical plates (19) that join the reinforcing forming bar (20) welded behind the angles.

7) "FAST COUPLING MULTIPURPOSE DEVICE FOR TRACTORS AND AGRICULTURAL MACHINERY" as claimed in the previous claims and further characterized by having blocks (21) welded to angles (18) bottom ends (see figs. 1 and 2). These blocks originate front plates (22) provided with seats (23), and back plates (24), which hold square bars (25) with cross holes, fastened with bolts (26) to the back plates.

8) "FAST COUPLING MULTIPURPOSE DEVICE FOR TRACTORS AND AGRICULTURAL MACHINERY" as claimed in the previous claims and further characterized by being provided with different points of attachment in the supported part (B) (see figs. 1 and 2) thanks to a vertical series of holes on the vertical plates (19) and to the possibility of placing the square bars (25) between the back plates (24), on a longitudinal axis, with bolts (26) inserted in their holes.

9) "FAST COUPLING MULTIPURPOSE DEVICE FOR TRACTORS AND AGRICULTURAL MACHINERY" as claimed in the previous claims and further characterized by being provided with seats (23) (see fig. 5) where the pivot pins (9) safetying semicylinders (10) shown in fig. 4 have to be inserted.

10) "FAST COUPLING MULTIPURPOSE DEVICE FOR TRACTORS AND AGRICULTURAL MACHINERY" as claimed in the previous claims and further characterized by being provided with spring (32) thrust and screw (33) fastened securing devices (31) seats (30) (see fig. 6) on the exterior sides of the exterior plates, to prevent the pivot pins from rotating at the end of the coupling process.

11) FAST COUPLING MULTIPURPOSE DEVICE FOR TRACTORS AND AGRICULTURAL MACHINERY" as claimed in the previous claims and further characterized by the fact that the two parts (A) and (B) (see figs. 7 and 8) are coupled on an almost vertical axis perpendicular to the vertical longitudinal medial axis of the towing vehicle. Thanks to its angled shape with the vertex in the upper part, it allows a direct motion transmission from the towing vehicle to the trailing implement. 12) "FAST COUPLING MULTIPURPOSE DEVICE FOR TRACTORS AND AGRICULTURAL MACHINERY" as claimed in all the previous claims and further basically explained and described for all the mentioned purposes, regardless of those modifications or changes that could be carried out without therefore departing from the present patent.