Material or article handling – Vertically swinging load support – Shovel or fork type
Patent
1988-08-03
1990-09-11
Spar, Robert J.
Material or article handling
Vertically swinging load support
Shovel or fork type
403324, 137595, 13761404, B66C 2300, E02F 396
Patent
active
049557793
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a connector for the connection of an implement, e.g. a tool, such as a bucket or a clamshell, to a machine, e.g. an excavator or for the connection of an attachment member, e.g. front end boom arm and dipper stick to a machine, e.g. an excavator. The connector comprises a carrier associated with the machine and holder associated with the tool or attachment. The connector incorporates remotely controlled means for its connection to the implement or attachment member.
Known connectors have various disadvantages known to persons skilled in the art including the following: they are welded and consequently inaccurate and expensive, they comprise of an open structure for dirt entrapment during operation, the hydraulic services cannot be fully controlled from the operator's cabin and they are not sufficiently universal, versatile or failsafe in use.
The invention provides a connector comprising a carrier adapted for fitment to a machine and a holder adapted for fitment to a tool or an attachment, the carrier comprising two elongate hollow members, each of which contains a slide situated displaceably therein, a chamber, which is situated between the hollow members, and displacement means for displacement of the slides, the connector comprising connection means for the interconnection and disconnection of the carrier and holder, the connection means including at least one first connection member on the holder engageable with at least one first connection element on the carrier, and at least one second connection member on the holder engageable with at least one second connection element attached to the slides.
The aim of the invention is to avoid, or at least to mitigate, these and other disadvantages of known connectors.
This is achieved by a connector having the features claimed in the claims.
The invention will now be described, by way of example, with reference to the accompanying diagrammatic drawings, in which:
FIG. 1 is a side elevation of a connector comprising a carrier and holder;
FIG. 2 is a similar embodiment with two displaceable eyes;
FIG. 3 is a partial end view to FIG. 2;
FIG. 4 is an end view to FIG. 1;
FIG. 5 is a longitudinal section along line III--III in FIG. 4;
FIG. 6 is a longitudinal section along line II--II in FIG. 5;
FIG. 7 is a transverse section along line V--V in FIG. 6;
FIG. 8 is a longitudinal section along line IV--IV in FIG. 4;
FIG. 9 is the same section as in FIG. 8 of another embodiment;
FIG. 10 is a transverse section along line VI--VI in FIG. 6;
FIG. 11 is an axial section through a seal;
FIG. 12 is a circuit for controlling active tools and an auxiliary circuit of a working equipment;
FIG. 13 is a section through a carrier with a drive assembly;
FIG. 14 is a section through a further embodiment of a connector;
FIG. 15 is a section through a further embodiment of a connector;
FIG. 16 is a section through a further embodiment of a connector;
FIG. 17 is a view along the arrow A in FIG. 16;
FIG. 18 is a section through a further embodiment of a connector; and
FIGS. 19 and 20 show a further embodiment which is a modification of that shown in FIGS. 5 and 8.
FIG. 21 is a front view of a connector with a two-part holder;
FIG. 22 is a side view to FIG. 21;
FIG. 23 is a plan to FIGS. 21 and 22;
FIG. 24 is a front view of a connector with a two-part carrier; and
FIG. 25 is a front view of a connector with an auxiliary mounting.
The carrier 1 shown inn FIGS. 1 to 10 is fitted in the arm (not shown) of an excavator and can in use assume various positions. It will be described, for the sake of simplicity, as if it were permanently in the horizontal position shown in FIG. 1, using words like "top" and "bottom". The carrier 1 comprises two elongate, mutually parallel lateral members 2 between which is situated a sealed chamber 4 which is delimited by the members 2, a top wall 5, a removable bottom wall 6, a rear end wall 14 and a front end wall 14A. On top of each member 2 are provided two eyes 7 which in all FIGS., except in FIGS. 2 and 3, have a fixed spacing from e
REFERENCES:
patent: 3243066 (1966-03-01), Gardner et al.
patent: 3269570 (1966-08-01), Wallberg
patent: 3279827 (1966-10-01), Brown
patent: 3512665 (1970-05-01), Westendorf
patent: 4332094 (1982-06-01), Mieger
patent: 4345872 (1982-08-01), Arnold
patent: 4355945 (1982-10-01), Pilch
patent: 4480955 (1964-11-01), Andrews et al.
patent: 4488850 (1984-12-01), Wernimont
patent: 4545720 (1985-10-01), Cochran et l.
Drazil Jaromir Vaclav
Spar Robert J.
Underwood Donald W.
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