Material or article handling – Vertically swinging load support – Shovel or fork type
Patent
1982-09-27
1984-11-06
Spar, Robert J.
Material or article handling
Vertically swinging load support
Shovel or fork type
371175, E02F 396
Patent
active
044809557
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
This invention relates to a quick release and attachment assembly for earthmoving or excavating machines or the like.
BRIEF DESCRIPTION OF THE PRIOR ART
There are many types of earthmoving and excavation equipment where the operating tool, e.g. a bucket, blade or ripper pick, must be released from the machine for maintenance or replacement by a different tool. One example is an excavator, which may be operated with buckets of differing widths and/or cubic capacities.
The task of releasing the operating tools from a machine, and attaching a replacement tool thereto, is difficult and time-consuming, particularly in the field.
BRIEF SUMMARY OF THE INVENTION
It is an object of the present invention to provide an assembly which allows an operating tool to be quickly released from, or attached to, a machine.
It is a preferred object to provide an assembly which, when the tool is attached, safely locks the tool in position.
It is a further preferred object to provide an assembly which can be operated without the operator having to leave his operating station on the machine.
Other preferred objects of the present invention will become apparent from the following description.
In one aspect, the present invention resides in a quick release and attachment assembly for an earthmoving or excavating machine or the like, comprising:
a first attachment means including a base, at least two opposed stop members fixed on the base, and locating means on the base adjacent at least one of the stop members; and
a second attachment means including an attachment head adapted to engage the locating means, a fixed stop engagement means on the attachment head adapted to engage one of the stop members, a movable stop engagement means on the attachment head movable between a first position engaging the second of the stop members and a second position released from the second stop member, and means to move the movable stop engagement means;
one of the attachment means being connectable to the earthmoving or excavating machine and the other attachment means being connectable to an operating tool for the machine.
Preferably the base of the first attachment means is bolted, welded or otherwise fastened to or formed integrally of, the operating tool, e.g. a bucket, blade or ripper pick, while the attachment head of the second attachment means is pivotally mounted on the boom or the lifting arm (or arms) of the earthmoving or excavating machine.
Preferably the locating means includes a pair of laterally spaced, parallel side plates fixed on the base, the attachment head being received and located between the side plates.
The first stop member may include a transverse bar, rod, block or beam fixed between the side plates and may be spaced above the base to enable a portion of fixed stop engagement means to be engaged between the first stop member and the base.
The second stop member may include a hook or jaw welded to the base having a nose or tooth directed towards the first stop member.
The attachment head may include a housing having a pair of spaced side walls interconnected by a base plate. Mounting lugs may be provided on the side walls to receive pivot pins which pivotally connect the housing to the boom or lifting arm(s).
The fixed stop engagement means may include a pair of aligned tapered slots formed at one end of the side walls of the housing, the slots engaging the transverse bar or beam. Preferably, lateral flanges are provided along the sides of the slots to increase the load bearing area between the slots and the bar or beam.
The movable stop engagement means may include a movable jaw slidably mounted on guides or tracks, or pivotally mounted on a pin, on the base plate of the housing, and a hydraulic ram or mechanical screw may be employed to move the movable jaw into, or out of, engagement with the fixed hook or jaw.
BRIEF DESCRIPTION OF THE DRAWINGS
To enable the invention to be fully understood, a preferred embodiment will now be described with reference to the accompanying drawings, in whi
REFERENCES:
patent: 3269570 (1966-08-01), Wallberg
patent: 3512665 (1970-05-01), Westendorf
patent: 3556323 (1971-01-01), Heimmermann
patent: 3818551 (1974-06-01), Coughran, Jr.
patent: 4030624 (1977-06-01), Matthews
patent: 4034998 (1977-07-01), Iijima et al.
patent: 4085856 (1978-04-01), Westendorf
patent: 4116347 (1978-09-01), Uchida
patent: 4208163 (1980-06-01), Holmquist
patent: 4236329 (1980-12-01), Hetrick
patent: 4251181 (1981-02-01), Drott et al.
patent: 4265587 (1981-05-01), Clark
patent: 4355945 (1982-10-01), Pilch
Andrews Errol F.
Casbolt Jeffrey N.
Holt Kevin E.
McMillan John M.
Peterson Edward A.
Maroochy Shire Council
Siemens Terrance L.
Spar Robert J.
LandOfFree
Coupling for earth moving tools etc. does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Coupling for earth moving tools etc., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coupling for earth moving tools etc. will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1040248