Excavating – Digging edge – Tooth or adaptor
Patent
1996-09-16
1998-09-08
Melius, Terry Lee
Excavating
Digging edge
Tooth or adaptor
37457, E02F 928
Patent
active
058027521
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to a tooth arrangement, preferably for use with machines for earth working. Such machines are generally provided with an excavator bucket having a cutting edge and thereon a number of holders, each provided with a tooth. In such an excavator the teeth are intended to loosen a ground surface which the cutting edge then transfers to the actual bucket space. The cutting edge of an excavator generally consists of a separate plate welded to the actual bucket, a number of holders being attached to the cutter. The holders are intended to receive a point adapter that is secured to the holder with the aid of a dowel. The free end of the point adapter is in turn provided with an arrangement for securing a point. A point adapter is attached to a holder by means of a turning movement followed by a displacement movement. This is a laborious procedure and also entails the drawback that the parts of the holder and point adapter that are to cooperate with each other are dimensioned too slim from the strength point of view.
OBJECT OF THE INVENTION
The object of the present invention is to facilitate joining holder and point adapter together. According to the invention this is achieved with only a linear displacement movement, after which the two parts are locked together by means of a dowel. This procedure enables the cooperating parts of holder and point adapter to be made more robust, thereby resulting in greater strength. From a purely practical point of view the opposite ends of the holder and the point adapter each have a male part and a female part located one above the other, the male part of the holder being located opposite to a female part of the point adapter and a male part of the point adapter being located opposite to the female part of the holder. One male part is provided with a longitudinal ridge intended to cooperate with a longitudinal groove in the other male part. The two male parts are each provided with a transverse groove, said grooves providing a transverse cavity for a dowel in order to lock the joined holder and point adapter together.
SUMMARY OF THE INVENTION
According to a preferred embodiment the transverse cavity for a dowel has a predetermined cross section so that if a dowel with the same cross section is inserted into said cavity, the dowel will always assume a predetermined position.
According to a preferred embodiment the dowel may be arc-shaped and be so oriented in the cavity for the dowel that the plane of the dowel will coincide substantially with the axial plane of the holder and the point adapter.
The wall of the groove in the ridge-like part of one of the male parts may be so designed that the cavity formed when the parts are fitted together, acquires one or two pockets that can be used for snap-in members pertaining to the dowel used.
According to a preferred embodiment of the present invention the dowel is in the form of a frame with two longitudinal sides, the space between the sides being filled with a yielding material such as rubber. One longitudinal side of the dowel is suitably free from the rest of the frame, and can thus be displaced inwardly. The other longitudinal side of the frame is provided with a protrusion to limit the inward movement of the movable side.
The longitudinal side of the dowel frame that is not movable may be provided externally with a snap arrangement to be snapped into the pocket that is formed by a transverse cavity, in the wall of the groove of one of the male parts.
However, it should be evident that the dowel arrangement described for joining the parts is not limited to use with a holder and a point adapter. Other uses for it are also possible where two optional parts are to be joined in which a groove is formed that has a pocket.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 shows a point adapter;
FIG. 2 shows a holder
FIG. 3 shows the frame of a key;
FIG. 4 shows a complete key.
DETAILED DESCRIPTION OF THE INVENTION
In the figures, 1 is a point adapter provided with a male part
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Batson Victor
Componenta Wear Parts AB
Melius Terry Lee
LandOfFree
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