Mining or in situ disintegration of hard material – Ice-working devices
Patent
1983-01-17
1986-06-17
Novosad, Stephen J.
Mining or in situ disintegration of hard material
Ice-working devices
299 36, 299 40, 299 67, 371175, 405180, E02F 532
Patent
active
045952400
DESCRIPTION:
BRIEF SUMMARY
This invention relates to a bucket to be attached to the dipper arm of an excavator or corresponding machine, at which arm also a so-called frozen soil scarifier or cable plough is provided, so that it is possible by means of this combined arrangement of bucket and scarifier both to excavate with the bucket and to scarify frozen soil or corresponding material with the scarifier without excavating with the bucket.
Telecommunication cables, electric cables or the like often are laid in cable trenches or pipe trenches in the ground. The width of these trenches is substantially smaller than their depth. The trenches are digged a.o. by means of a cable plough or scarifier, which is attached to an excavator or corresponding machine and consists of a relatively narrow, slightly curved arm, which at its free end is provided with a tooth or the like, and a trench is digged or ploughed by means of the arm. The arm is adapted to digging in frozen soil and also is used for scarifying holes in the frozen soil before digging with a bucket can commence.
Arrangements are known, for example, where a frozen soil scarifier and a bucket are intended to be attached to the digger arm of an excavator and where, when the scarifier is to be used, the bucket is removed manually for rendering free use of the scarifier possible. These arrangements show several disadvantages, as they require, for example, heavy and tedious manual working moments.
The present invention relates to a combined bucket and frozen soil scarifier/cable plough, at which the aforesaid disadvantages have been eliminated and where the switching between scarifying/ploughing and digging, or vice versa, can be effected rapidly and automatically. According to the invention, also single objects such as a stone or log can be gripped by co-operation between the bucket and scarifier. According to one embodiment of the invention, the bucket and the scarifier are hingedly suspended at said attachment and can be rotated, swung outward, so that an object, for example a log, gripped by the bucket and scarifier can be swung in a plane from horizontal to, for example, vertical direction.
The present invention, thus, relates to a device at a combined bucket and frozen soil scarifier/cable plough, where the bucket and the scarifier are intended to be attached to a digger arm of an excavator or corresponding machine, and where the width of the scarifier is substantially smaller than the width of the bucket, and where the bucket in digging position is intended to rest at its rear edge against the scarifier, and where the bucket is hingedly suspended at its upper portion by means of an axle or corresponding member and can be folded, preferably by hydraulic means, in the direction from the scarifier, whereby the scarifier can be used without the bucket being engaged.
The device according to the invention is substantially characterized in that a separate attachment is provided to be attached, preferably by a quick-coupling arrangement, to a corresponding controllable attachment means at the digger arm, and that the bucket and the scarifier are located at said separate attachment and extend downward therefrom, so that the bucket and the scarifier can assume either of two positions, which are offset through 180.degree. relative to each other in relation to the longitudinal direction of the digger arm.
The invention is described in greater detail in the following, with reference to the accompanying drawings, in which
FIG. 1 is a schematic lateral view of a device according to the invention,
FIG. 2 is a view from the right in FIG. 1 of the device according to FIG. 1, where certain details have been excluded for the sake of clearness, and where to the right in FIG. 2 the forward cylinder attachments, and to the left in FIG. 2 the rearward cylinder attachments are shown,
FIG. 3 is a section A--A in FIG. 1,
FIG. 4 shows schematically a device for scarifying asphalt surfacing,
FIG. 5 is a schematic lateral view of a combined bucket and scarifier with a first embodiment of a rotating means acc
REFERENCES:
patent: 3209474 (1965-10-01), Artman
patent: 3209475 (1965-10-01), Salna
patent: 3343693 (1967-09-01), Becker
patent: 3344540 (1967-10-01), Ulrich
patent: 3486344 (1969-12-01), Ylinen
patent: 3854608 (1974-12-01), Arnold
patent: 3959900 (1976-06-01), Luck
patent: 4076314 (1978-02-01), Dodich
Goodwin Michael A.
Logos Export AB
Novosad Stephen J.
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