CA1103446A - Impact ripper - Google Patents
Impact ripperInfo
- Publication number
- CA1103446A CA1103446A CA336,617A CA336617A CA1103446A CA 1103446 A CA1103446 A CA 1103446A CA 336617 A CA336617 A CA 336617A CA 1103446 A CA1103446 A CA 1103446A
- Authority
- CA
- Canada
- Prior art keywords
- shank
- axis
- ripper
- pivot pin
- impact
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
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- Earth Drilling (AREA)
Abstract
Clevis-Mounted Impact Ripper Abstract of the Disclosure An improved ripper assembly wherein a ripper shank is mounted to the beam of a tractor by a clevis pin so as to minimize side forces acting on the shank pin. The vertical axis of the clevis pin may be aligned with the distal end of the ripper tip and the horizontal axis of the shank pivot pin. The impact surfaces of the impacting mechanism and shank preferably define a plane of abutment in which lies a radius from the horizontal shank pivot pin axis. This plane is further preferably accurately perpendicularity the ripper tip axis extending perpendicularly to the radius. The arrangement provides a free pivoting action of the ripper assembly about the vertical axis of the clevis pin so as to effectively minimize side loads for improved extended life of the ripper assembly.
Description
Description Impact Ripper .
Technical Field - This invention relates to earthworking machines and more specifically to impact rippers.
Background Art - In one form of conventional earth ripper, a ripper tip is mounted to a shank which is pivotally mounted to the tractor beam by a shank pivot pin. As a result of side loads acting on the ripper during the ripping operation, the shank pivot pins have worn so that the pins, at times, were lost during the ripping operation, presenting serious safety and ma;ntenance problem5.
A number of different pivoting arrangements have been utilized in connection with such ripping devices. Il-lustratively, in U. S. Letters Patent 2,797,629, issued July 2, 1957 to Carlton O. Kelley, a pivoted shank subsoil contour plow is shown wherein~the distal tips of the plow blades are disposed directly below and in vertical alignment with the pivot pin mounting the blades to a frame member so as to prevent side draft at the tips of the plows.
Donald J~ Larson, in U. S. Letters Patent
Technical Field - This invention relates to earthworking machines and more specifically to impact rippers.
Background Art - In one form of conventional earth ripper, a ripper tip is mounted to a shank which is pivotally mounted to the tractor beam by a shank pivot pin. As a result of side loads acting on the ripper during the ripping operation, the shank pivot pins have worn so that the pins, at times, were lost during the ripping operation, presenting serious safety and ma;ntenance problem5.
A number of different pivoting arrangements have been utilized in connection with such ripping devices. Il-lustratively, in U. S. Letters Patent 2,797,629, issued July 2, 1957 to Carlton O. Kelley, a pivoted shank subsoil contour plow is shown wherein~the distal tips of the plow blades are disposed directly below and in vertical alignment with the pivot pin mounting the blades to a frame member so as to prevent side draft at the tips of the plows.
Donald J~ Larson, in U. S. Letters Patent
2,998,965, issued September 5, 1961, which patent is owned by the assignee hereof, shows a push block for a~tractor-mounted ripper mounted to a tractor by a pair of draft - arms. The ripper shank is provided with a ripp~;er tip and connected with the tractor beam by a clevis pivotally con-nected to the beam by a clevis pin. The ripper tip is spaced sub.stantially rearwardly of the axis of the clevis pin.
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- la -- In U. S. Letters Patent 3,031,175, issued April 24, 1962 to Mack Wooldridge, a ripper mounting for twin crawlers is shown wherein the ripper tip is spaced rear-; wardly of the vertical axis ~f the clevis pin.
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Albert G. Bodine shows a sonic rectifier coupling for rock cutting apparatus in U. S. Letters Patent
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- la -- In U. S. Letters Patent 3,031,175, issued April 24, 1962 to Mack Wooldridge, a ripper mounting for twin crawlers is shown wherein the ripper tip is spaced rear-; wardly of the vertical axis ~f the clevis pin.
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Albert G. Bodine shows a sonic rectifier coupling for rock cutting apparatus in U. S. Letters Patent
3,367,716, wherein an impact device is engageable with an impact surface of the ripper shank at an angle thereto.
U. S. Letters Patent 3,770,322, issued Movember 6, 1973 to Delwin E. Cobb et al, shows an apparatus for fracture of material in situ with stored inertial energy which is cyclically delivered on demand to the work tool, and which energy is stored in a large flywheel and delivered to the tool by suitable transmission means. The single pivot point disclosed by Cobb et al is indicated as ~ preferably located ahead of the cutting tip to obtain the `~` desired motion.
Darrel M. Wooldridge, in U. S. Letters Patent
U. S. Letters Patent 3,770,322, issued Movember 6, 1973 to Delwin E. Cobb et al, shows an apparatus for fracture of material in situ with stored inertial energy which is cyclically delivered on demand to the work tool, and which energy is stored in a large flywheel and delivered to the tool by suitable transmission means. The single pivot point disclosed by Cobb et al is indicated as ~ preferably located ahead of the cutting tip to obtain the `~` desired motion.
Darrel M. Wooldridge, in U. S. Letters Patent
4,044,838, issued August 30, 1977t shows an automatic control for a ripper tool which is disposed substantially rearwardly of the majority of the mounting pins of the assembly.
Disclosure of Invention The present invention comprehends a ripper assembly having a beam adapted to be secured to an earth-working machine, a clevis pivot pin mounted to said beam to define a vertical pivot axis, an impact breaker mechanism, a shank provided with a shank pivot pin, a ripper tip defining a ripper tip axis, and a bracket pivotally mounted to the clevis pivot pin and carrying the impact breaker mechanism to apply an impact force to the shank urging the ripper tip about the axis of the shank pivot pin, the improvement comprising means on said bracket for mounting said shank pivot pin to define a horizontal pivot axis substantially intersecting said clevis pivot pin vertical axis.
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Brief Description of Drawin~
FIGURE 1 is a fragmentary side elevation of an earthworking apparatus including a ripper structure; and . FIGURE 2 is a fragmentary enlarged side elevation
Disclosure of Invention The present invention comprehends a ripper assembly having a beam adapted to be secured to an earth-working machine, a clevis pivot pin mounted to said beam to define a vertical pivot axis, an impact breaker mechanism, a shank provided with a shank pivot pin, a ripper tip defining a ripper tip axis, and a bracket pivotally mounted to the clevis pivot pin and carrying the impact breaker mechanism to apply an impact force to the shank urging the ripper tip about the axis of the shank pivot pin, the improvement comprising means on said bracket for mounting said shank pivot pin to define a horizontal pivot axis substantially intersecting said clevis pivot pin vertical axis.
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~ _ 3 _ :
Brief Description of Drawin~
FIGURE 1 is a fragmentary side elevation of an earthworking apparatus including a ripper structure; and . FIGURE 2 is a fragmentary enlarged side elevation
- 5 of the ripper structure.
Best Mode for Carrying Out the_Invention In the exemplary embodiment disclosed in the drawing, a ripper assembly 10 is shown as mounted to a beam 11 mounted on the rear portion 12 of a tractor 13.
The tractor includes suitable extensible elements 14 and 15r such as hydraulic cylinder devices, for controlling the .
' ~ ~ .
disposition of the beam and, thus, the positioning of the ripper assembly in the operation thereof. The in-vention is concerned with the mounting of the ripper assembly 10 to the beam 11 and, in the arrangement of the elements of the ripper assembly relative to such mounting; to provide an improved long life, troublefree operation.
More specifically, as seen in Figure 1, the ripper assembly 10 includes a brack~t 16 mounted to the beam 11 by a cleYis 17. The bracket carries a rock breaker mechanism 18 for providing an impact force-to the shank 19 of a ripper generally designated 20 and provided at its lower end with a~ripper tip 21. In nor-mal operation, as the tractor is moved forwardly to draw the ripper into the ground G to be ripped, the tip 21 is impacted by the mechanism 18 so as to provide an improved rock breaking ripping operation for facilitated earth working.
Referring now more specifically to Figure 2, the structural arrangement of the ripper assèmbly may be more clearly seen. As shown, the clevis is provided with a clevis pin 22 which is arranged to define a substan-tially vertical axis 23 extending downwardly vertically to the distal end 34 of the ripper tip 21. The clevis pin axis extends vertically upwardly to perpendicularly intercept a horizontal axis 24 of a shank pivot pin 25 pivotally mounted to the bracket 16 and carrying the shank 19 for pivotal swinging about the axis 24. Thus, the rip-per tip 21 is positionable about the vertical axis 23 of the clevis pivot and, in the illustrated embodiment, is swingable thereabout approximately 30, i.e., 15 in each direction from the centered disposition. Concurrently, the ripper tip 21 is swingable about the hori~ontal axis 24, and more specifically, is arranged to provide an impact ripping action as a result of the impact forces generated thereon by the rock breaker mechanism 18 so as to pxovide ' -~ a desired ripping force downwardly into the ground G, as shown in Figure 2 in the normal operation of the ripper assembly.
The impact force applying means may comprise a conventional rock breaker mechanism which may include a conventional operating motor 26. The motor drives a con-ventional L lywheel-crankshaft ring impactor 27 well known to those skilled in the art and, thus, no further descrip-tion thereof need be given here. However, the impactor device defines an impact surface 28 which impinges on a reaction impact surface 29 of the shank 19 in the impact-;; ing operation so as to apply an impact force to the shank so as to impact the ripper tip 21 into the ground G, as ~ illustrated in Figure 2.
: 15 As shown in Figure 2, the surfaces 28 and 29 are accurately parallel so as to define a common plane when in abutment with each other, which plane contains a radius 30 from the horizontal shank pivot pin axis 24 extending per-pendicular to the axis 31 of the ripper tip 21.
Thus, the invention comprehends mounting the ripper assembly 10 to the beam~:Ll by means of:an improved connection including the clevis pin 22 axially vertically aligned with the distal end 34 of the ripper tip 21. The horizontal shank pin axis, within the scope of the inven-tion, is disposed to substantially intersect the vertical .~ clevis pin axis 23.
It is further contemplated within the scope of the invention that the impact surfaces be accurately par-allel so as to define a common plane when in abutment in the impacting cperation, which plane defines a radius 30 of the shank pivot pin axis 24 and which perpendicularly : intersects the ripper tip axis 31 which extends perpen-dicularly to the radius 30.
As discussed above, the vertical clevis pivot pin axis Z3 is preferably vertically aligned with the dis-tal end 34 of the ripper tip and the horizontal axis 24 ~.L~
-G-of the shank pivot pin. The invention comprehends that within the concept of substantial alignment thereof, the axis of the clevis pivot pin 22 may be disposed somewhat forwardly of this line in providing the desired force moment to assure turning of the unit into the rocks, etc.
of the ground G with effectively minimized side forces tending to wear the pivot pins of the device.
In the illustrated embodiment, the impact sur-faces 28 and 29 are disposed at a 35 angle to the hori-zontal. Such disposition has been found to provide anexcellent impacting operation which, when combined with the improved reduction of side forces acting on the shank pin, provides a long, highIy efficient, troublefree life of the ripper assembly.
Industrial Applicability As indicated above, the ripper structure of the present invention may be utilized as an impact energy source, such as mounted at the rear of an earthmoving~machine. One form of machine with which the ripper structure may be advan-tageously utilized is a tractor~
~ Further more speciically, the ripper assembly may ; be mounted to the beam o~ the tractor as by clevis-type mounting.
The impact ripper may be utilized as a conversion unit wherein a conventional rockbreaker device is converted to an impact rock trencher. The apparatus, when utilized in producing trenches, advantageously produced vertical side-walls and efficiently operated as an impact rock cruncher.
Other aspects, objects and advantages of this invention can be obtained rom a study of the drawings, the disclosure and the appended claims.
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Best Mode for Carrying Out the_Invention In the exemplary embodiment disclosed in the drawing, a ripper assembly 10 is shown as mounted to a beam 11 mounted on the rear portion 12 of a tractor 13.
The tractor includes suitable extensible elements 14 and 15r such as hydraulic cylinder devices, for controlling the .
' ~ ~ .
disposition of the beam and, thus, the positioning of the ripper assembly in the operation thereof. The in-vention is concerned with the mounting of the ripper assembly 10 to the beam 11 and, in the arrangement of the elements of the ripper assembly relative to such mounting; to provide an improved long life, troublefree operation.
More specifically, as seen in Figure 1, the ripper assembly 10 includes a brack~t 16 mounted to the beam 11 by a cleYis 17. The bracket carries a rock breaker mechanism 18 for providing an impact force-to the shank 19 of a ripper generally designated 20 and provided at its lower end with a~ripper tip 21. In nor-mal operation, as the tractor is moved forwardly to draw the ripper into the ground G to be ripped, the tip 21 is impacted by the mechanism 18 so as to provide an improved rock breaking ripping operation for facilitated earth working.
Referring now more specifically to Figure 2, the structural arrangement of the ripper assèmbly may be more clearly seen. As shown, the clevis is provided with a clevis pin 22 which is arranged to define a substan-tially vertical axis 23 extending downwardly vertically to the distal end 34 of the ripper tip 21. The clevis pin axis extends vertically upwardly to perpendicularly intercept a horizontal axis 24 of a shank pivot pin 25 pivotally mounted to the bracket 16 and carrying the shank 19 for pivotal swinging about the axis 24. Thus, the rip-per tip 21 is positionable about the vertical axis 23 of the clevis pivot and, in the illustrated embodiment, is swingable thereabout approximately 30, i.e., 15 in each direction from the centered disposition. Concurrently, the ripper tip 21 is swingable about the hori~ontal axis 24, and more specifically, is arranged to provide an impact ripping action as a result of the impact forces generated thereon by the rock breaker mechanism 18 so as to pxovide ' -~ a desired ripping force downwardly into the ground G, as shown in Figure 2 in the normal operation of the ripper assembly.
The impact force applying means may comprise a conventional rock breaker mechanism which may include a conventional operating motor 26. The motor drives a con-ventional L lywheel-crankshaft ring impactor 27 well known to those skilled in the art and, thus, no further descrip-tion thereof need be given here. However, the impactor device defines an impact surface 28 which impinges on a reaction impact surface 29 of the shank 19 in the impact-;; ing operation so as to apply an impact force to the shank so as to impact the ripper tip 21 into the ground G, as ~ illustrated in Figure 2.
: 15 As shown in Figure 2, the surfaces 28 and 29 are accurately parallel so as to define a common plane when in abutment with each other, which plane contains a radius 30 from the horizontal shank pivot pin axis 24 extending per-pendicular to the axis 31 of the ripper tip 21.
Thus, the invention comprehends mounting the ripper assembly 10 to the beam~:Ll by means of:an improved connection including the clevis pin 22 axially vertically aligned with the distal end 34 of the ripper tip 21. The horizontal shank pin axis, within the scope of the inven-tion, is disposed to substantially intersect the vertical .~ clevis pin axis 23.
It is further contemplated within the scope of the invention that the impact surfaces be accurately par-allel so as to define a common plane when in abutment in the impacting cperation, which plane defines a radius 30 of the shank pivot pin axis 24 and which perpendicularly : intersects the ripper tip axis 31 which extends perpen-dicularly to the radius 30.
As discussed above, the vertical clevis pivot pin axis Z3 is preferably vertically aligned with the dis-tal end 34 of the ripper tip and the horizontal axis 24 ~.L~
-G-of the shank pivot pin. The invention comprehends that within the concept of substantial alignment thereof, the axis of the clevis pivot pin 22 may be disposed somewhat forwardly of this line in providing the desired force moment to assure turning of the unit into the rocks, etc.
of the ground G with effectively minimized side forces tending to wear the pivot pins of the device.
In the illustrated embodiment, the impact sur-faces 28 and 29 are disposed at a 35 angle to the hori-zontal. Such disposition has been found to provide anexcellent impacting operation which, when combined with the improved reduction of side forces acting on the shank pin, provides a long, highIy efficient, troublefree life of the ripper assembly.
Industrial Applicability As indicated above, the ripper structure of the present invention may be utilized as an impact energy source, such as mounted at the rear of an earthmoving~machine. One form of machine with which the ripper structure may be advan-tageously utilized is a tractor~
~ Further more speciically, the ripper assembly may ; be mounted to the beam o~ the tractor as by clevis-type mounting.
The impact ripper may be utilized as a conversion unit wherein a conventional rockbreaker device is converted to an impact rock trencher. The apparatus, when utilized in producing trenches, advantageously produced vertical side-walls and efficiently operated as an impact rock cruncher.
Other aspects, objects and advantages of this invention can be obtained rom a study of the drawings, the disclosure and the appended claims.
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Claims (14)
1. In a ripper assembly having a beam adapted to be secured to an earthworking machine, a clevis pivot pin mounted to said beam to define a vertical pivot axis, an impact breaker mechanism, a shank provided with a shank pivot pin, a ripper tip defining a ripper tip axis, and a bracket pivotally mounted to the clevis pivot pin and carrying the impact breaker mechanism to apply an impact force to the shank urging the ripper tip about the axis of the shank pivot pin, the improvement comprising:
means on said bracket for mounting said shank pivot pin to define a horizontal pivot axis substantially intersecting said clevis pivot pin vertical axis.
means on said bracket for mounting said shank pivot pin to define a horizontal pivot axis substantially intersecting said clevis pivot pin vertical axis.
2. The ripper assembly of claim 1 wherein said clevis pivot pin axis substantially intersects the distal end of the ripper tip.
3. The ripper assembly of claim 1 wherein said impact breaker mechanism is swingable about said shank pin axis and said shank defines an impact surface extending perpendicularly to the ripper tip axis, said mechanism defining an impact means impacting against said impact surface accurately perpendicularly to said ripper tip axis.
4. The ripper assembly of claim 1 wherein said impact breaker mechanism is swingable about said shank pin axis and said shank defines an impact surface extending perpendicularly to the ripper tip axis, said mechanism de-fining an impact means impacting against said impact surface accurately perpendicularly to said ripper tip axis, said impact surface extending parallel to a radius from said shank pivot pin axis extending perpendicularly to said ripper tip axis.
5. The ripper assembly of claim 1 wherein said clevis pivot pin axis substantially intersects the distal end of the ripper tip, said impact breaker mechanism is swingable about said shank pin axis and said shank defines an impact surface extending perpendicularly to the ripper tip axis, said mechanism defining an impact means impacting against said impact surface accurately perpendicularly to said ripper tip axis.
6. The ripper assembly of claim 1 wherein said clevis pivot pin axis substantially intersects the distal end of the ripper tip, said impact breaker mechanism is swingable about said shank pin axis and said shank defines an impact surface extending perpendicularly to the ripper tip axis, said mechanism defining an impact means impacting against said impact surface accurately perpendicularly to said ripper tip axis, said impact surface extending parallel to a radius from said shank pivot pin axis extending perpendicularly to said ripper tip axis.
7. In a ripper assembly having a beam adapted to be secured to an earthworking machine, a clevis pivot pin, an impact breaker mechanism, a shank provided with a shank pivot pin, a ripper tip defining a ripper tip axis and defining a distal end, and a bracket pivotally mounted to the clevis pivot pin and carrying the impact breaker mechanism to apply an impact force to the shank urging the ripper tip about the axis of the shank pivot pin, the im-provement comprising:
means on said bracket for mounting said shank pivot pin to define a horizontal pivot axis substantially vertically above the ripper tip; and means for mounting said clevis pivot pin to said beam to define a vertical pivot axis substantially inter-secting said distal end of the ripper tip.
means on said bracket for mounting said shank pivot pin to define a horizontal pivot axis substantially vertically above the ripper tip; and means for mounting said clevis pivot pin to said beam to define a vertical pivot axis substantially inter-secting said distal end of the ripper tip.
8. The ripper assembly of claim 7 wherein said shank defines an impact surface extending parallel to a radius from said shank pivot pin axis extending perpendicu-larly to said ripper tip axis.
9. In a ripper assembly having a beam adapted to be secured to an earthworking machine, a clevis pivot pin mounted to said beam to define a vertical pivot axis, an impact breaker mechanism, a shank provided with a shank pivvot pin, a ripper tip defining a ripper tip axis, and a bracket pivotally mounted to the clevis pivot pin and carrying the impact breaker mechanism to apply an impact force to the shank urging the ripper tip about the axis of the shank pivot pin, the improvement comprising:
means defining planar, confronting impact force transfer surfaces on said breaker mechanism and shank re-spectively arranged to extend transversely to said ripper tip axis, the abutment of said transfer surfaces defining a plane in which lies a radius from said shank pivot pin axis which pivot pin axis extends perpendicularly to said ripper tip axis.
means defining planar, confronting impact force transfer surfaces on said breaker mechanism and shank re-spectively arranged to extend transversely to said ripper tip axis, the abutment of said transfer surfaces defining a plane in which lies a radius from said shank pivot pin axis which pivot pin axis extends perpendicularly to said ripper tip axis.
10. The ripper assembly of claim 9 wherein said breaker mechanism comprises means defining a first of said force transfer surfaces defining a plane containing at all times said radius.
11. The ripper assembly of claim 9 wherein said breaker mechanism comprises means defining a first of said force transfer surfaces defining a plane containing at all times said radius and said shank includes an anvil portion defining the other of said surfaces, said other of said surfaces defining a plane extending perpendicularly to said ripper tip axis at all times.
12. The ripper assembly of claim 9 wherein said breaker mechanism comprises means defining a first of said force transfer surfaces defining a plane containing at all times said radius and said shank includes an anvil portion defining the other of said surfaces, said other of said surfaces defining a plane extending perpendicularly to said ripper tip axis at all times, the line between the distal end of the ripper tip and said shank pivot pin axis extending vertically.
13. The ripper assembly of claim 9 wherein said breaker mechanism comprises means defining a first of said force transfer surfaces defining a plane containing at all times said radius and said shank includes an anvil portion defining the other of said surfaces, said other of said surfaces defining a plane extending perpendicularly to said ripper tip axis at all times, the line between the distal end of the ripper tip and said shank pivot pin axis extending vertically and being substantially coincident with said clevis pivot pin axis.
14. The ripper assembly of claim 9 wherein said breaker mechanism comprises means defining a first of said force transfer surfaces defining a plane containing at all times said radius and said shank includes an anvil portion defining the other of said surfaces, said other of said surfaces defining a plane extending perpendicularly to said ripper tip axis at all times, the line between the distal end of the ripper tip and said shank pivot pin axis extending vertically and being substantially coincident with said clevis pivot pin axis, said shank and breaker mechanism being swingable as a unit approximately 30°
about said clevis pivot pin axis.
about said clevis pivot pin axis.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/US1979/000077 WO1980001637A1 (en) | 1979-02-12 | 1979-02-12 | Impact ripper |
| US31,560 | 1979-02-12 | ||
| US06/031,560 US4229044A (en) | 1979-02-12 | 1979-02-12 | Clevis-mounted impact ripper |
| USPCT79/00077 | 1979-02-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1103446A true CA1103446A (en) | 1981-06-23 |
Family
ID=26707398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA336,617A Expired CA1103446A (en) | 1979-02-12 | 1979-09-28 | Impact ripper |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1103446A (en) |
-
1979
- 1979-09-28 CA CA336,617A patent/CA1103446A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |