ES1069050U - Quick hitch (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Quick coupler characterized in that it has a part (1) machine for attachment to a machine (2) excavator, tractor or similar and a part (3) tool to attach to a tool (4), where the piece (1) machine presents a stem (1.3) that joins two lateral plates (1.1) of the piece (1) machine and that is inserted in a few holes (3.1.1) torn present in the lateral plates (3.1) of the piece (3) tool, defining an axis of rotation that allows to face two holes (1.1.1) present in the side plates (1.1) of the piece (1) machine with separate holes (3.1.2) of the side plates (3.1) of the piece (3) tool for its unión by means of a pin (1.2). (Machine-translation by Google Translate, not legally binding)

Description

Quick hitch

Object of the invention

The present invention aims at a quick hitch for excavating machines, tractors or similar which presents a regulation system that allows the operator make the coupling with the tool quickly and simple.

Due to its special configuration, the hitch fast allows you to center the force on the tool, Especially useful in the case of hammer or hammer.

Background of the invention

They are well known in the state of technique quick hooks for buckets and hammers excavators that are attached to the lower end of the arm and the articulation piece of an excavator shovel, where the end Lower arm and joint piece are joined by connecting rods and fixed to the hitch piece by bolts externally reinforced transverse with nuts lift.

The previous systems present in the ends of the hitch piece angular housings or concavities to engage on pins located in the central upper part of the dipper or hammer or other type of excavator tool

In addition, these systems have a hook articulated that makes the closure on one of the pins of the tool, in addition to an axis that slides inside a housing due to the action of a spring, the housing carrying out the Close over the other of the tool pins.

The shaft and the hook are articulated in a point, so that the closure occurs both on both pins

However, this complex system is conditioned to the elasticity of the spring, since when it does not acts according to the initial requirements, the closure is not simultaneous on both pins, which can lead to the risk of tool drop during use, with consequent risks to people

Likewise, the previous system needs some additional retention means for hook immobilization otherwise it would return to its non-retention position of the corresponding pin.

The quick hitch of the present invention provides a simple and fast system that does not need internal elements to the frame of the same to make the hitch, in addition to presenting a simple system of regulation before the coupling

Description of the invention

The present invention relates to a hitch fast constituted in two pieces, a piece of hook to the machine that is commanded by the operator, such as an excavator or a tractor, and a part that hooks to the specific tool, which can be a firing pin, hammer, dipper or similar.

The piece of hook to the machine, formed by two side plates are fixed to the machine by means of conventional pins, this being not the object of the present invention.

This piece of hook to the machine presents a stem that joins both side plates and that is inserted into torn holes present in each side part plates of hook to the tool. This union defines an axis of rotation which allows to face two holes present in the plates sides of the piece of hook to the machine with two holes from the side plates of the hitch piece to the tool.

The side plates of the hitch piece a the machine are external to the side plates of the piece of hook to the tool, allowing you to center the force of the machine on the tool

The quick hitch presents some means of regulation that allows fine adjustment of the position relative between the tool hitch part and the hook the machine until the holes of both are completely faced to fix the union by means of a Barrette.

This fine adjustment also allows easy disassembly of both pieces facing the holes of both by fine adjustment of the regulation means.

Description of the drawings

This descriptive report is complemented, with a set of drawings, illustrative of the preferred example and never limiting the invention.

Figure 1 shows an elevation view of a embodiment of the invention where in addition to the quick hitch they are represented the machine and the tool.

Figure 2 shows a perspective view of the initial moment of the connection between the tool hitch and the machine hitch
na.

Figure 3 shows a perspective view of the  final moment of the union between the hitch piece to the tool and the hitch piece to the machine, where they are shown the regulation means that provide fine adjustment.

Preferred Embodiment of the Invention

In view of the foregoing, the The present invention relates to a quick hitch constituted in two pieces, one piece (1) machine hitch machine (2) that it is commanded by the operator, such as an excavator or a tractor, and one piece (3) tool hook to the tool (4) specific, which can be a firing pin, hammer, dipper or Similary.

The piece (1) machine, which is formed by two side plates (1.1) and fixed to the machine (2) by means of pins (1.2), also has a rod (1.3) that joins both side plates (1.1) and inserted into holes (3.1.1) Torn present in each side plates (3.1) of the piece (3)  tool.

The rod (1.3) acts as a rotation axis that allow the machine part (1) to rotate until two holes (1.1.1) present in the side plates (1.1) of the part (1) machine are faced with two holes (3.1.2) of the side plates (3.1) of the part (3) tool.

The side plates (1.1) of the piece (1) machine are external to the side plates (3.1) of the part (3) tool, which allows to center the force of the machine (2) on the tool (4).

The quick hitch presents some means of regulation that allows fine adjustment of the position relative between the part (1) machine and the part (3) tool until the holes (1.1.1, 3.1.2) of both (1, 3) remain completely facing each other to fix the joint using a pin (1.2).

These means of regulation are formed by height adjustable screws (3.2) present in the part (3) tool, where they support some projections (1.4) present in the piece (1) machine.

Likewise, height adjustable screws could be located in the part (1) machine and the projections in the piece (3) tool, not varying the object of the means of regulation.

The screws (3.2) adjustable in height and / or the  projections (1.4) have rubber stops (3.2.1, 1.4.1) that absorb machine vibrations (2) and prevent wear mechanical in the union.

They do not alter the essentiality of this invention variations in materials, shape, size and arrangement of component elements, described in a non-limiting manner, sufficient this one to proceed to its reproduction by an expert.

Claims (6)

1. Quick hitch characterized in that it has a part (1) hitch machine to a machine (2) excavator, tractor or similar and a part (3) tool to hitch a tool (4), where the part (1) machine presents a rod (1.3) that joins two lateral plates (1.1) of the machine part (1) and that is inserted into torn holes (3.1.1) present in each side plates (3.1) of the tool part (3), defining a rotation axis that allows facing two holes (1.1.1) present in the side plates (1.1) of the part (1) machine with two holes (3.1.2) of the side plates (3.1) of the part (3) tool for joining by means of a pin (1.2). 2. Quick coupling according to claim 1, characterized in that the side plates (1.1) of the machine part (1) are external to the side plates (3.1) of the tool part (3), which allows centering the force of the machine (2) ) on the tool (4). 3. Quick coupling according to claim 1 characterized in that it has adjustment means that allow fine adjustment of the relative position between the workpiece (1) and the workpiece (3) so that the holes (1.1.1, 3.1.2 ) of both (1, 3) are completely faced. 4. Quick coupling according to claim 3 characterized in that the adjustment means are formed by height adjustable screws (3.2) present in the tool part (3), where projections (1.4) present in the machine part (1) are supported. 5. Quick coupling according to claim 3 characterized in that the adjustment means are formed by projections present in the workpiece (3), where they support height adjustable screws present in the workpiece (1). 6. Quick coupling according to claim 4 or 5 characterized in that the screws (3.2) adjustable in height and / or the projections (1.4) have rubber stops (3.2.1, 1.4.1) that absorb the vibrations of the machine (2 ) and prevent mechanical wear on the joint.