WO1988005482A1 - Rotary high-lift - Google Patents
Rotary high-lift Download PDFInfo
- Publication number
- WO1988005482A1 WO1988005482A1 PCT/US1988/000021 US8800021W WO8805482A1 WO 1988005482 A1 WO1988005482 A1 WO 1988005482A1 US 8800021 W US8800021 W US 8800021W WO 8805482 A1 WO8805482 A1 WO 8805482A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- frame
- cylinder
- lift
- secured
- lock
- Prior art date
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
- E02F3/7636—Graders with the scraper blade mounted under the tractor chassis
- E02F3/765—Graders with the scraper blade mounted under the tractor chassis with the scraper blade being pivotable about a horizontal axis disposed perpendicular to the blade
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
- E02F3/7636—Graders with the scraper blade mounted under the tractor chassis
- E02F3/764—Graders with the scraper blade mounted under the tractor chassis with the scraper blade being pivotable about a vertical axis
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
- E02F3/7636—Graders with the scraper blade mounted under the tractor chassis
- E02F3/7654—Graders with the scraper blade mounted under the tractor chassis with the scraper blade being horizontally movable into a position near the chassis
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
- E02F3/7636—Graders with the scraper blade mounted under the tractor chassis
- E02F3/7659—Graders with the scraper blade mounted under the tractor chassis with the vertical centre-line of the scraper blade disposed laterally relative to the central axis of the chassis
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
- E02F3/80—Component parts
Definitions
- the present invention relates to high-lift arrangements for a blade of a motor grader.
- the invention relates to an improved method of supporting the blade beneath the frame of a grader.
- the first group uses a beam extending either side of the frame of th motor grader and pivotable about the frame
- the second group uses separate arms, one to either side of the frame, and in many cases these arms are movable to various positions.
- the fixed •position arrangements are generally limited with respect to the extent and position, either side of the grader, that the blade can be positioned.
- the grader blade In general, the most demanding specification requires that the grader blade be capable of moving to either side of the mainframe of the grader from a perpendicular position at one side to a perpendicular position at the other.
- the fixed arm or fixed beam arrangement have limited adjustability, however in many applications the extreme positions of the blade will not be used.
- the blade support arrangement should be adjustable t effect 2 to 1 and 1 to 1 banking either side of the grader as well as a ditching orientation either side of the grader
- the support arrangement for the motor grader blade should be convenient to use and adjust, between the various positions.
- the syste should be such that there is not any substantial fouling
- the ideal blade positions include the 90° high-lift to either side of the grader, a position of the blade which is approximately 63 to effect a 2 to 1 banking operation, and a further banking position of the blade at about " 45 .
- the 45 position and the 63 position are generally considered the most frequent positions of the grader blade and the positions which a system must satisfy. Therefore, the flexibility of the system and the ease of adjusting the same should be evaluated with respect to these normal positions, although some merit must be accorded the 90 position as well as the horizontal beam position.
- BSTITUTE SHEET mechanical lock are the steel to steel locking contact whi is the generally accepted standard in the industry.
- havin movable arms either side of the grader frame again uses a pin-type lock arrangement for fixing the arms at various positions relative to the frame and often these pins are either mechanically movable to allow adjustment of the arm or beam or are hydraulically actuated to effect adjustment of the components.
- the fixing of these component in a predetermined position on the frame is achieved by a mechanical type lock.
- the problem of accurate positioning for locking is compounded in the movable arm system in tha two arms must be locked rather than a single beam and freezing of locks occurs and are difficult to release.
- the present invention provides a structure for supporting the blade of a motor grader beneath the frame o the grader.
- This arrangement is of reduced complexity and provides advantages with respect to cost of manufacture as well as service in the field.
- the arrangement maintains th area beneath the frame of the—grader relatively clear and uses a link-type member disposed between the side of the grader frame and a position on the beam spaced from the central pivot location of the pivoted beam to effect locking.
- the link is an hydraulic cylinder thus allowing an infinite number of positions of the beam relative to the grader frame.
- the hydraulic cylinder also acts as an hydraulic lock, thus overcoming the precision problems associated wit a mechanical lock.
- Figure 1 is a partial perspective view of a high-lift arrangement for the blade of a motor grader
- SUBSTITUTE SHEET Figure la is a perspective view of manual lock lin Figures 2 and 3 are rear elevational views of the high-lift;
- Figure 4 is a similar rear elevational view with the high-lift rotated to one side of the motor grader
- Figure 5 is a front elevational .of a modified structure
- Figure 6 is a rear view of the high-lift; and Figure 7 is a rear view of a modified version of the beam and the connection points of components to the frame.
- the mainframe 2 of the motor grader supports adjacent the cab a generally horizontally extending support beam 4, which universally supports at 19 hydraulic lift cylinders 6 at either end of the support beam.
- the cylinders 6 are connected to a ring gear 8 via beam 7 which provides the main support of the road grader blade 9.
- Beam 7 is pulled by the grader by means of drawbar 3.
- the arrangement for supporting of the blade 9 beneath the ring gear and the ring gear are known from our earlier patent U.S. 4,340,119 and the prior art in general.
- the invention of the present application is generally directed to the high-lift arrangement 5 for the blade 9.
- the support beam 4 is pivotally .supported on the shaft 10 which extends in the fore and aft direction of the mainframe of the road grader.
- the shaft 10 is secured to the mainframe 4 by two pivoted saddle arrangements 26 to either side of the beam 4.
- the beam itself intermediate the saddles 26 includes a downwardly extending portion which includes bearings for cooperation with the shaft 10 to thereby pivotally secure the beam 4 atop the mainframe 2 of the motor grader.
- the beam 4 rotates from the generally horizontal position of Figure 1 through an angle of about 70 , 35 either side of the horizontal position.
- the lift cylinders 6 are universally supported adjacent the extremities of the bea at a position generally below shaft 10 (when the beam is horizontal).
- the points of securement are su that with a counterclockwise rotation of the beam 4 shown Figure 2, the point of securement 19 of the lefthand cylinder is below the horizontal line passing through shaf 10 and as such, will move through a further distance towar the frame 4 of the grader for a predetermined amount of rotation.
- This is desired as problems occur in achieving the 90° location and these problems are reduced by positioning the cylinders such that the far cylinder in a 90° blade position is moved as far as possible beneath the frame of the grader, while the other cylinder is rotated upwardly through the horizontal passing through shaft 10 a as such, its position is still quite spaced from the mainframe.
- Integral with beam 4 and to one side of the mainframe 4 is a downwardly and r ⁇ arwardly extending arm 1 having an end 15 which is rearwardly offset relative to th center line of the beam 4 about eight inches.
- An hydraulic shift cylinder 16 is secured to the end 15 and shifts the ring gear 8 in a generally traverse movement relative to th mainframe 4. In this way, the position of the blade, eithe beneath the grader or to the side thereof, is accomplished.
- arm 14 is spaced from the mainframe of the grader when the beam is in the generally neutral position and is positioned to allow, without interference, the desired rotation of the beam about shaft 10.
- a lock link- 20 To the other side of the frame 4 as shown in Figure 1 and Figure la, is a lock link- 20 which.
- the link 20 includes a number of circular holes 23 in the length thereo which are positioned to achieve the desired fixed positions of the beam relative to the grader.
- the link provides a manual type lock arrangement where it would be necessary for the operator to remove the pin 24 and cause rotation of the beam 4 to the desired position and effect locking by replacing the pin 24 in an appropriate aligned aperture in flange 25.
- This lock link arrangement pinned t the side of the mainframe of the grader maintains the space beneath the road grader substantially clear and allows the ring gear 8 to essentially come immediately below the grade frame (with five inches) to effect a fairly high ground clearance of the blade crirectly beneath the frame as schematically shown in Figure 4. Furthermore, this simple lock arrangement greatly reduces the cost and it can be recognized that advantages are achieved in that if wear doe occur, either pin 24 or the various connections of the link 20 to the beam 4 or the beam to the frame can be — accomplished quite easily.
- the bearings type connection associated with each of these components are common and are readily available and easily replaced by the * people in the field.
- the link 20 has been replaced by a double acting hydraulic cylinder 34 generally universally supported to the side of the frame 2 of the grader via •flange 25.
- the cylinder 34 has been secured intermediate the length of the barrel portion 36 to allow for a somewha greater stroke of the cylinder.
- the piston 38 of the cylinder 34 is secured at point 22 to the beam whereby the position of the beam relative to the mainframe 4 is accomplished by adjusting the cylinder. This results in a arrangement which effectively provides an infinite number positions of the beam between its extreme points of rotation, with the locking of the beam being accomplished the hydraulic cylinder 34.
- FIG. 5 A modified arrangement is shown in Figure 5 wherei the double acting hydraulic cylinder 34 has been relocated and repositioned to improve the load carrying capabilities of the components.
- the double acting cylinder 34a has the piston 38a pivotally secured to the frame 2 at 21a adjacent the lower edge and to one side of the frame by means of brackets 25a.
- the barrel 36a is pivotally secured to beam at 35a spaced outwardly of shaft 10 and to the same side of the frame as position 21a.
- the point of securement 35a is selected to reduce high stress concentrations and avoid cylinder fouling.
- the triangle formed by the position of securement 35a, point 21a and shaft 10 results in lower stress than the arrangements of Figure 1 through 4.
- beam 4 may be fabricated of plate steel in a box type cross-section, in which case, ports top and bottom can be provided and cylinder 34a can extend through the beam 4.
- the simplified shape of the beam 4 makes fabrication from plate steel a competitive alternative to a cast beam.
- the grader blade may be positioned to either side of the mainframe 4 and the blade positioned at 90 to either side of the. mainframe. Therefore, the support achieves the full - in ⁇
- Figure 7 is a rear view of a beam of additional depth and showing details of the mounting of the hydraulic lock cylinder.
- the particular geometry is shown in Figure 6 and includes the points of securement of the lift cylinder 6 t the beam 4, the pivot of the beam," the beam -width, the securement of the drag link 16 to the downwardly depending arm 14 and the point.s of securement of the lift cylinders the beam 7 and the securement of the drag link 16 to the beam 7.
- This geometry has proven most satisfactory.
- the beam 4 spaces the cylinders 6 apart approximately 50 inche at the beam and the lift cylinders are secured to the beam at a spacing of about 48 inches. This causes the cylinders to adopt a neutral position as shown in Figure 6 where the cylinders are initially angled slightly outwardly to generally follow the progressively opening window of the ca of the grader.
- the 50 inch spacing of the cylinders either side of the beam is substantially reduced relative to the industry, where a minimum spacing of 52 inches and a more normal spacing of 54 inches have been used.
- the narrower spacing of the beam in combination with the improved clearance beneath the frame and particular location of the points of securement of the lift cylinders below the axis 1 of the beam (about two inches), or at least in line therewith, allows the desired positioning of the blade 90° either side of the grader as well as positioning of the blade for banking at a 2 to 1 or 1 to 1 ratio and a ditching position.
- the distance between securement of each cylinder 6 to the beam and the end position of the piston portion of the cylinder at maximum stroke is about 70 inches.
- the height of the cylinder above the beam is such to allow for full retraction of the piston portion of th,e lift cylinder.
- the minimum retracted position of the drag cylinder 16 is 38 inches and this cylinder has a stroke of about 27 inches.
- the point of securement of the drag link 16 to the beam 7 is offset from the center line of the beam and the center line of the grader about 21 inches.
- the spacing of the lift cylinders on the beam 7 again are symetrical about the center line and are separated 48 inches.
- the upper securement of the drag link 16 to the depending arm 14 is about 19-1/2 inches below the horizontal passing through the axis 10-and is offset from the center line of the beam about 16-1/4 inches.
- This arrangement allows a full 90 high-lift position with the blade approximately 21 inches above the ground and the beam 7 approximately 31 inches above the ground, and the blade is positioned outwardly of the tires 101 of the grader such that the far edge of the blade is about 33 inches from the outer edge of the tire.
- the cylinders are adjusted with the beam in its fully rotated configuration and this results in the blade being lowered towards the ground and the lower outer tip of the blade will be approximately 6 inches above the ground and located exterior to the tire approximately 20 inches.
- the blade moves inwardly whereby the lower tip of the blade is approximately 10 inches spaced outwardly of the tire and again is approximately 6 inches clear of the ground.
- the lower edge of the blade can be positioned above the ground for working a bank where any excess material can accumulate to the exterior of the tire in the gap between the lower edge of the blade and the tire.
- the tire does not ride on the ridge of materi 5 that may accumulate and as such, a fairly constant slope c be achieved.
- the cylinder 36a preferably has a strok about 18 inches and is spaced outwardly of the axis 10 approximately 20.75 inches.
- the composite design of the beam which allows fabrication from plate steel and allows the hydraulic lock cylinder 36a to extend through ports 45 and 47 in the beam also provides flexibility with respect to selecting an appropriate shape for the design forces. For example, the depth of the beam and the fore and aft direction of the grader can be increased, and if additional width of the be from top to bottom is necessary, then the pivot position o the beam above the frame of the grader can be increased an the width of the beam then increased. This allows a great deal of latitude with respect to the shaping of the beam f the loads expected to be encountered.
- the composite de-sig also allows for a reinforcing of the beam in the area of securement of the lock cylinder 36a merely by adding additional plates interiorly or exteriorly.
- the cylinder 36a is preferably secured to the beam such that the pivot position of the cylinder is above the beam as shown in Figure 7.
- Mounting blocks 49 welded to the top of the beam and a bearing arrangement 51 securing the lock cylinder is bolted to the mounting blocks 49. This again increases the lever arm and as such, will reduce the stress level on the axis 1 as well as securement of the cylinder to the frame and the stress at the point of securement of the cylinder to the beam.
- the composite beam construction simplifies securemen of the downwardly extending arm 14 and selective reinforcin of the beam to carry the required force.
- the beam 4 of Figure 7 is mounted slightly higher above frame 2 to accommodate the shallower radius 57 which can be a high stress area.
- a fabricated beam 4 is preferred, however a cast beam could also benefit from the improved geometry and cooperation of components.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA000527260A CA1279989C (en) | 1987-01-13 | 1987-01-13 | Motor grader with high-lift shift cylinder and hydraulic lock means |
CA527,260 | 1987-01-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1988005482A1 true WO1988005482A1 (en) | 1988-07-28 |
Family
ID=4134750
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1988/000021 WO1988005482A1 (en) | 1987-01-13 | 1988-01-12 | Rotary high-lift |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0339051A1 (en) |
AU (1) | AU608827B2 (en) |
CA (1) | CA1279989C (en) |
WO (1) | WO1988005482A1 (en) |
ZA (1) | ZA88193B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11066809B2 (en) | 2018-10-26 | 2021-07-20 | Deere & Company | Motor grader saddle positioning system and method thereof |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114396090B (en) * | 2022-01-27 | 2023-02-10 | 江苏徐工工程机械研究院有限公司 | Revolving frame and leveler |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2655743A (en) * | 1950-11-16 | 1953-10-20 | W A Riddell Corp | Road working apparatus |
FR1054712A (en) * | 1952-04-19 | 1954-02-12 | W A Riddel Corp | Advanced leveling machine |
DE1484689A1 (en) * | 1963-09-12 | 1969-04-03 | Heise Alfelder Eisen | Hydraulic coulter adjustment device for road planer |
US3455400A (en) * | 1965-11-26 | 1969-07-15 | Deere & Co | Scraper control mechanism |
US3986563A (en) * | 1975-05-01 | 1976-10-19 | Deere & Company | Suspension and control linkage for a grade blade support frame |
-
1987
- 1987-01-13 CA CA000527260A patent/CA1279989C/en not_active Expired - Lifetime
-
1988
- 1988-01-12 WO PCT/US1988/000021 patent/WO1988005482A1/en not_active Application Discontinuation
- 1988-01-12 ZA ZA880193A patent/ZA88193B/en unknown
- 1988-01-12 EP EP88902622A patent/EP0339051A1/en not_active Withdrawn
- 1988-01-12 AU AU14820/88A patent/AU608827B2/en not_active Ceased
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2655743A (en) * | 1950-11-16 | 1953-10-20 | W A Riddell Corp | Road working apparatus |
FR1054712A (en) * | 1952-04-19 | 1954-02-12 | W A Riddel Corp | Advanced leveling machine |
DE1484689A1 (en) * | 1963-09-12 | 1969-04-03 | Heise Alfelder Eisen | Hydraulic coulter adjustment device for road planer |
US3455400A (en) * | 1965-11-26 | 1969-07-15 | Deere & Co | Scraper control mechanism |
US3986563A (en) * | 1975-05-01 | 1976-10-19 | Deere & Company | Suspension and control linkage for a grade blade support frame |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11066809B2 (en) | 2018-10-26 | 2021-07-20 | Deere & Company | Motor grader saddle positioning system and method thereof |
Also Published As
Publication number | Publication date |
---|---|
ZA88193B (en) | 1988-07-08 |
EP0339051A1 (en) | 1989-11-02 |
AU608827B2 (en) | 1991-04-18 |
CA1279989C (en) | 1991-02-12 |
AU1482088A (en) | 1988-08-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4125271A (en) | Tool suspension | |
US4405019A (en) | Adjustment and stabilizer mechanism for dozer blade | |
US4356645A (en) | Variable wing plow blade and mounting structure therefor | |
US5169278A (en) | Vertical lift loader boom | |
US5924819A (en) | Linkage mechanism for an extendable asphalt paver screed | |
US4201268A (en) | Adjustment mechanism for dozer blade | |
EP0166704B1 (en) | Attachment for wheel-mounted loaders and like machines | |
US3946506A (en) | Trimmer type road construction apparatus with pivotally connected conveyor | |
CA2270854A1 (en) | Hinged plow attachment for wheeled and tracked vehicles | |
US4852659A (en) | Motor grader with high-lift and lock arrangement | |
US4727665A (en) | Hydraulic actuated moldboard with automatic lock | |
US5732781A (en) | Mechanism to laterally tilt front end loader buckets | |
US4340119A (en) | Motor grader with bar linkage blade positioning apparatus | |
AU5336899A (en) | System for frame leveling and stabilizing a forklift | |
US4423560A (en) | Auxiliary support for heavy equipment | |
US4248311A (en) | Side shift blade arrangement | |
WO1988005482A1 (en) | Rotary high-lift | |
US6059048A (en) | Implement mounting arrangement with independent lift-roll and pitch-yaw operability | |
US4135584A (en) | Blade stabilizing linkage for a bulldozer | |
US4607862A (en) | Mobile machine comprising a stabilizing device | |
US5111888A (en) | Hammer-swinging mechanism | |
US4039095A (en) | Swing mechanism for backhoe | |
US4046209A (en) | Oscillation lockout system for track mounted rock drill | |
WO1987006288A1 (en) | Bulldozer blade mounting and stabilizing arrangement | |
US20160281321A1 (en) | Work vehicle boom lock |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AU DE NO |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE FR GB IT LU NL SE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1988902622 Country of ref document: EP |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
WWP | Wipo information: published in national office |
Ref document number: 1988902622 Country of ref document: EP |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 1988902622 Country of ref document: EP |