AU598556B2 - Mounting frame for linear impact ripper assembly - Google Patents

Description

Melbourne -To: I MAIL OFFICER,/ The Commissioner of Patents, COMMONWEALTH OF AUSTRALIA.

Patent Attorneys for CATERPILLAR

INC.

i i- P/00/011 598556 Form PATENTS ACT 1952-1973 COMPLETE SPECIFICATION

(ORIGINAL)

FOR OFFICE USE Class: Int. CI: Application Number: Lodged: Complete Specification-Lodged: Accepted: Published: This document contains the ar 'dmcnts rnade under Setion 49 and is correct for printing.

Priority: Related Art: Name of Applicant: Address of Applicant: TO BE COMPLETED BY APPLICANT CATERPILLAR INC., a corporation organized and existing under the laws of the State of Delaware, of .100 N.E. Adams Street, Peoria, Illinois, United States of America MICHAEL ANTHONY ROUSSIN JERRY DALE FIDLER Care of: COWIE, THOMSON CARTER, Patent Attorneys, 71 Queens Road, Melbourne, Vic., 3004.

Australia.

Actual Inventor: Address for Service: Complete Specification for the invention entitled: MOUNTING FRAME FOR LINEAR IMPACT RIPPER ASSEMBLY The following statement is a full description of this invention, including the best method of performing it known to 1 *Note: The description is to be typed in double spacing, pica type face, in an area not exceeding 250 mm in depth and 160 mm in width, on tough white paper of good quality and it is to be inserted inside this form.

11710/76-L C, J. THOMPSON. Commonwealh iGovernment Printer. Canberra l- -luc u~ -2- Description Mounting-Frame-for-Linear-Impact Ripper Assembly Technical Field This invention relates to impact rippers of the type carried on the rearward end of an earthmoving vehicle, and more particularly to a mounting frame for a linear impacting ripper assembly and is for a Patent Of Addition to No. 60320/86.

Background Art In one form of conventional earth penetrating ripper, a shank is pivotally mounted to an elevationally adjustable support structure carried on the rear of an earthworking vehicle. As a result of the shank moving through the earth and impacting rocks and other obstructions, the mounting frame must withstand relatively high forces. In U.S. Patent No. 4,453,772 by Roussin, forces created by the ripper element pivoting rearwardly must be absorbed by the impactor apparatus and all forces from the individual components must be absorbed by the two swivel pins. The present invention is directed to overcoming one or more of the problems as set forth above.

Disclosure of-the Invention According to the invention there is provided a mounting frame adapted for supporting an impact ripper on a vehicle providing an elevationally adjustable support frame having a pair of rearwardly extended transversely spaced legs, said impact ripper including a ripper shank for engaging the ground and an impactor, said mounting frame comprising: a main crossbeam having laterally spaced opposite ends; a pair of end plates mounted on each end of the crossbeam and forwardly extended therefrom and adapted for pivotal connection to said legs of the support frame; a mounting structure mounted on said crossbeam Sintermediate said pairs of end plates, said mounting i I i structure includes a pair of ripper shank mounting plates mounted on said crossbeam in forwardly extended relation from the crossbeam and a pair of impactor mounting plates mounted outwardly on said pair of ripper shank mounting plates in rearwardly extending relation thereto; and a shank pivot mounting on said shank mounting plates and adapted for supporting the ripper shank in depending relation therefrom, Brief-Description of -theDrawings Fig. 1 is a side elevational view of a mounting t: frame for a linear impact ripper assembly; Fig. 2 is a top elevational view of the mounting frame of Fig. 1 for a linear impact ripper assembly; ~Fig. 3 is a partial side sectional view taken 15 along plane 3-3 of Fig. 2; and Fig. 4 is a fragmentary sectional view taken along plane 4-4 of Fig. 3.

BestMode+For -Carrying-Out -the Invention In the illustrated embodiment the mounting frame 10' includes a mounting structure 66 mounted on the t crossbeam 18' intermediate the end plates 20' which are mounted on laterally spaced opposite ends of the crossbeam 18'.

The mounting structure 66 includes a pair of ripper shank mounting plates 68 mounted on the crossbeam 18' and a pair of impactor mounting plates 70 mounted outwardly on the ripper shank mounting plates 68. The pair of impactor mounting plates 70 straddle the pair of ripper shank mounting plates 68. The pair of ripper shank mounting plates 68 are attached to the crossbeam 18' by a weld 72. A plurality of bosses 74 and a spacer plate 76 are attached to an outer surface 78 of the shank mounting plates 68. The impactor mounting plates 70 have a plurplity of apertures 80 for receiving the plurality of bosses 74 to position the impactor mounting plates.

A pair of stiffener plates 82 are attached to the impactor mounting plates 70 and have a plurality of apertures 84 for also A -4receiving the plurality of bosses 74. A plurality of welds 86 attach the mounting plates 70 and stiffener plates 82 to the plurality of bosses 74. The pair of impactor mounting plates 70 are considered to be mounted on the crossbeam 18' by virtue of their being mounted on the pair of ripper shank mounting plates 68 which are mounted on the crossbeam 18'.

Industrial Applicability The linear impact ripper mounting structure may be utilized as an impact energy source such as is typically mounted to a bracket 14' at the rear of an earthworking vehicle (not shown). During forward movement of the ripper structure 10', the apex 32' of the ripper shank 29' is selectively engageable with the earth. As the ripper structure 10', moves forward, the ripper shank 1 29' is pivoted rearwardly about the pivot pin 34' until I the impact surface 30' of the shank 29' contacts the linear reciprocating impact hammer 54'. The impact hammer 54' 4 strikes the impact surface 30' driving the shank 29' forward with the apex 32' breaking rock.

SForward movement pivots the ripper shank 29' rearward putting force on the ripper shank 29' which is transferred into the impact hammer 54'. As force on the ripper shank 29' and impact hammer 54' increases, the mounting blocks 52' will deflect to allow the impact hammer 54' to move rearward. As the ripper shank 29' and impact hammer 54' move rearward, the ripper shank 29' will contact the rear stop 58', therefore transferring all forces over a predetermined level away from the impact hammer 54' into the impactor mounting plates 70 and crossbeam 18' which serves to absorb such forces and isolate any resulting shock from the hydraulic jacks 16' and 24' and the frame mounting bracket 14' on the vehicle.

It should now be apparent that the linear impact ripper structure 10' transfers forces into the crossbeam 18'.

Other aspects, objects and advantages of this invention can be obtained from a study of the drawings, the disclosure and the appended claims.

Claims (3)

1. A mounting frame adapted for supporting an impact ripper on a vehicle providing an elevationally adjustable support frame having a pair of rearwardly extended transversely spaced legs, said impact ripper including a ripper shank for engaging the ground and an impactor, said mounting frame comprising: a main crossbeam having laterally spaced opposite ends; a pair of end plates mounted on each end of the crossbeam and forwardly extended therefrom and adapted ifor pivotal connection to said legs of the support frame; a mounting structure mounted on said crossbeam intermediate said pairs of end plates, said mounting structure includes a pair of ripper shank mounting plates mounted on said crossbeam in forwardly extended relation from the crossbeam and a pair of impactor mounting plates mounted outwardly on said pair of ripper shank mounting I plaLes in rearwardly extending relation thereto; and a shank pivot mounting on said shank mounting *r* t Iplates and adapted for supporting the ripper shank in j r, depending relation therefrom. t

2. The mounting frame of claim 1 wherein said pair of impactor mounting plates straddle said pair of ripper shank mounting plates.

3. A mounting frame adapted for supporting an impact ;i ripper on a vehicle substantially as herein described with reference to the accompanying drawings. DATED this 4th day of April, 1990. CATERPILLAR-INC. SCOWE, CARTER HENDY SPATENT TRADEMARK ATTORNEYS 71 QUEENS ROAD, MELBOURNE, 3004, AUSTRALIA