GRAVEL SCARIFYING AND LEVELLING DEVICE WITH INTEGRATED ROLLER DEVICE AND METHODS OF USE THEREOF
20210277612 · 2021-09-09
Inventors
Cpc classification
E01C19/266
FIXED CONSTRUCTIONS
E01C19/268
FIXED CONSTRUCTIONS
International classification
Abstract
A scarifier device includes a scarifier comprising a scarifier support frame having a plurality of downwardly depending axially secured scarifying teeth. An integrated roller device having a compaction roller on a roller support frame is pivotally coupled to the scarifier support frame. A hydraulic arm is positioned between the scarifier support frame and the roller support frame to articulate the roller device between a deployed position and a retracted position. Methods of making and using the scarifier device are also disclosed.
Claims
1. A scarifier device comprising: a scarifier comprising a scarifier support frame having a plurality of downwardly depending axially secured scarifying teeth; an integrated roller device having a compaction roller on a roller support frame, the integrated roller device pivotally coupled to the scarifier support frame; and a hydraulic arm positioned between the scarifier support frame and the roller support frame to articulate the roller device between a deployed position and a retracted position.
2. The scarifier device of claim 1 further comprising: a cam lock located on the the scarifier support frame and configured to securely hold the integrated roller device in the retracted position.
3. The scarifier device of claim 2, wherein the cam lock comprises a mainframe and a locking portion coupled at a pivot point, wherein the pivot point is offset from a centerline of the mainframe.
4. The scarifier device of claim 3, wherein the pivot point is offset from the centerline of the mainframe by at least 8 degrees.
5. The scarifier device of claim 1, wherein the scarifier support frame is connected in loose fitting relation to a driving mechanism, the loose fitting relation imparting a first component of lateral play at respective scarifier tip ends, and wherein the scarifier support frame includes a bracket portion engaging respective shank portions of the scarifying teeth in an axially secured relation with sufficient degrees of lateral freedom, imparting a second component of lateral play to spaced apart scarifying points of respective ones of the plurality of teeth.
6. The scarifier device of claim 1, wherein the bracket portion provides lateral freedom of about 30 degrees of movement from side to side for the respective shank portions.
7. The scarifier device of claim 1 further comprising: a vibration device located on the integrated roller device and configured to provide vibration of the integrated roller device during use.
8. The scarifier device of claim 1 further comprising: at least one unloader arm coupled to the scarifier support and configured to couple the scarifier device to a tractor, wherein the unloader arm comprises a hydraulic cylinder comprising a piston rod, wherein the unloader arm comprises a locking mechanism configured to protect the piston from impacts during operation of the scarifier device.
9. A method of making a scarifier device comprising: providing a scarifier comprising a scarifier support frame having a plurality of downwardly depending axially secured scarifying teeth; pivotally coupling an integrated roller device having a compaction roller on a roller support frame to the scarifier support frame; and positiong a hydraulic arm between the scarifier support frame and the roller support frame to articulate the roller device between a deployed position and a retracted position.
10. The method of claim 9 further comprising: locating a cam lock on the the scarifier support frame configured to securely hold the integrated roller device in the retracted position.
11. The method of claim 10, wherein the cam lock comprises a mainframe and a locking portion coupled at a pivot point, wherein the pivot point is offset from a centerline of the mainframe.
12. The method of claim 11, wherein the pivot point is offset from the centerline of the mainframe by at least 8 degrees.
13. The method of claim 9, wherein the scarifier support frame is connected in loose fitting relation to a driving mechanism, the loose fitting relation imparting a first component of lateral play at respective scarifying tip ends, and wherein the scarifier support frame includes a bracket portion engaging respective shank portions of the scarifying teeth in an axially secured relation with sufficient degrees of lateral freedom, imparting a second component of lateral play to spaced apart scarifying points of respective ones of the plurality of teeth.
14. The method of claim 9, wherein the bracket portion provides lateral freedom of about 30 degrees of movement from side to side for the respective shank portions.
15. The method of claim 9 further comprising: providing a vibration device located on the integrated roller device configured to provide vibration of the integrated roller device during use.
16. The method of claim 9 further comprising: providing at least one unloader arm coupled to the scarifier support and configured to couple the scarifier device to a tractor, wherein the unloader arm comprises a hydraulic cylinder comprising a piston rod, wherein the unloader arm comprises a locking mechanism configured to protect the piston from impacts during operation of the scarifier device.
17. A method of compacting a surface, the method comprising: providing a scarifier device comprising: a scarifier comprising a scarifier support frame having a plurality of downwardly depending axially secured scarifying teeth; an integrated roller device having a compaction roller on a roller support frame, the integrated roller device pivotally coupled to the scarifier support frame; and a hydraulic arm positioned between the scarifier support frame and the roller support frame to articulate the roller device between a deployed position and a retracted position; positiong the roller device in the deployed position using the hydraulic arm; suspending the scarifier device above the surface to apply a downward force on the roller device; and varying the downward force on the roller by manipulating the roller device using the hydraulic arm.
18. The method of claim 17, wherein the integrated roller device further comprises a vibration device located thereon configured to provide vibration of the integrated roller device during use, the method further comprising: activating the vibration device during the application of the downward force on the roller device.
19. A method of scarifying a survace, the method comprising: providing a scarifier device comprising: a scarifier comprising a scarifier support frame having a plurality of downwardly depending axially secured scarifying teeth; an integrated roller device having a compaction roller on a roller support frame, the integrated roller device pivotally coupled to the scarifier support frame; and a hydraulic arm positioned between the scarifier support frame and the roller support frame to articulate the roller device between a deployed position and a retracted position; and positiong the roller device in one or more positions between the deployed position and the retracted position using the hydraulic arm to variably restrict lifting friction of the scarifying teeth during movement of the scarifier device.
20. The method of claim 19 further comprising: positiong the roller device in the retracted position using the hydraulic arm to provide additional weight over the scarifying teeth; and moving the scarifier device to scarify the surface with the roller device positioned in the retracted position.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0013]
[0014]
[0015]
[0016]
[0017]
[0018]
[0019]
[0020]
[0021]
[0022]
[0023]
[0024]
DETAILED DESCRIPTION
[0025] Referring to
[0026] The scarifier device 10 advantageously provides an improved scarifier for scarifying and levelling gravel roadways, parking lots, and the like, that incorporates the integrated roller device 12 that can be manipulated by articulation to provide a number of advantages as discussed herein. For example, the scarifier device 10 can be used to scarify and/or level any granular surfaces such as gravel, crushed coral and sea shells, flint, sandstone, granite, shale, or limestone, although the scarifier device 10 could be used on other granular surfaces. The scarifier device 10 provides improved efficiency and an improved finished product during scarifying and/or levelling operations. Specifically, the user can control the position of the integrated roller device 12 to improve scarifying and leveling functions as described herein.
[0027] In this example, the scarifier 12 includes a support frame 18, bracket member 20, teeth 22, hydraulic arms 24, and a blade 25 although the scarifier 12 can include other types and/or other numbers of elements in other combinations. The scarifier 12 is configured for scarifying and levelling gravel roadways, parking lots, and the like, by way of example only. In one example, the scarifier 12 is similar in structure and operation to the scarifier disclosed in U.S. Pat. No. 5,265,975, the disclosure of which is incorporated herein by reference, except as discussed below.
[0028] In particular, as discussed in detail below, the scarifier 12 is advantageously configured as part of the scarifier device 10 that includes the fully integrated roller device 14 to allow for manipulation of the roller device 14 in an articulated manner to provide improved functionality of the scarifier 12. Further, although the scarifier 12 is shown in cross-section, it is to be understood for the purposes of the disclosure that symmetrical aspects may described in the plural form although only one of the elements is illustrated.
[0029] The support frame 18 in this example includes lower horizontal support frame portions 26, vertical support frame portions 28, and upper horizontal support frame portions (not shown). The terms horizontal, vertical, upper, and lower are utilized with respect to the standard orientation of the elements during operation of the scarifier device 10 and are not intended to be limiting. The support frame 18 is configured to be coupled to the integrated roller device 14 as described in further detail below. The vertical support frame portions 28 include vertically extending channels (as shown in cross-section) that allow for linear movement of the bracket portion 20 within the channels of vertical support frame portions 28 using hydraulic arms 24.
[0030] The bracket portion 20 holds the plurality of teeth 22 (although a single tooth is shown in
[0031] As illustrated in
[0032] The teeth 22 include the shank 31 and tips 32 that are utilized in the scarifying and leveling operations as described herein.
[0033] Referring again to
[0034] The blade 25 is secured to the support frame 18 of the scarifier 12 through a second frame 34 that is rigidly co-joined to the support frame 18. The blade 25 includes a trailing shoe 36 that can be usefully employed in free floating the blade during levelling operations, as will be apparent to persons skilled in the art in light of the present invention. In this frame arrangement, the scarifier 12 and the blade 25 are co-operable in a mutually dependent relation.
[0035] The roller device 14 includes a roller support frame 38, roller 40, and vibration device 42, although the roller device 14 can include other types and/or other numbers of elements in other combinations. The roller support frame 38 is configured to be coupled to the support frame 18 of the scarifier 12 as discussed in further detail below. The roller support frame 38 also supports the roller 40. The roller 40 may be any roller known in the art for levelling operations and is coupled to the roller support frame by an axle 43. In one example, the roller 40 provides a 12 inch drum, although other size rollers may be employed.
[0036] In one example, as illustrated in
[0037] The scarifier 12 is coupled to the roller device 14 at a pivot 44. The pivot 44 allows for articulation of the roller device 14 between the fully extended position as shown in
[0038] In this example, the hitch device 16 provides a three-point hitch connection for the scarifier device 10. The hitch device 16 is pivotally coupled to the vertical frame portion 28 through oversize holes configured to receive an undersized connection pin to allow for lateral displacement of the teeth 22 during operation. The hitch device 16 includes hydraulic cylinders 46a-46c that allow for operation various operations of the hitch device 16. The hitch device 16 allows for the scarifier device 10 to be coupled to a tractor, by way of example only.
[0039] In one example, the hitch device 16 also includes arm 17, which is shown in detail in
[0040] As a result, in operation, extension of the hydraulic cylinder 80 causes the barrel of the hydraulic cylinder 80 to move toward the rear of the tractor to which the scarifier device 10 is attached to by hitch device 16, by way of example. As the barrel of the hydraulic cylinder 80 moves rearward, the lugs 82 attached to the hydraulic cylinder 80 actuate the toggle 84, which releases the lock 86 on the extension arm. When the barrel of the hydraulic cylinder 80 reaches the end of its stroke in the slot 88, the piston rod 90 moves away from the rear of the tractor and angles the scarifier device 10, which may be employed in any of the operations described herein. The hydraulic cylinder 80 may then be moved in the opposite direction to reverse the process.
[0041] Referring now more specifically to
[0042] Referring more specifically to
[0043] The locking force is generated by hydraulic pressure, the use of leverage, and the weight of the roller device 14. In one example, the locking force is sufficient to securely hold the roller device 14 in position during use of the vibration device 42, which may be a 3500 psi vibro unit. The face of the cam lock 48 is convex and protrudes at the point 68 where it contacts the pin 62. This feature, along with the 8 degree offset of the pivot hole 70 allows for part wear and will ensure the tightness of the cam lock 48 as it wears over time.
[0044] In one example, the scarifier 12 is sized and configured to allow the cam lock 48 to hold the roller device 14 securely in place. In one example, in the retracted position shown in
[0045] Exemplary operations of the scarifier device 10 will now be described. The scarifier device 10 can be put into the fully deployed position, as a shown in
[0046] Further, in the deployed position the vibration mechanism 42 can be utilized to further enhance compaction as the vibration mechanism 42 provides vibrations that provide particle dispersion and settlement. Accordingly, the use of the vibration mechanism 42 provides for better surface performance and longevity for the surface worked upon by the roller device 14.
[0047] The user can operate the integrated roller device 14, through the hydraulic arm 15, to move the roller device 14 to various positions between the fully deployed position shown in
[0048]
[0049] Next, the user can manipulate the roller device 14 using the hydraulic arm 15 to the fully retracted position as shown in
[0050] In the fully retracted position, the vibration force during use of the vibration mechanism 42 is directed to the teeth 22 through the cam lock 48. Additionally, as shown in
[0051] Accordingly, as illustrated and described by way of the examples herein, this technology provides an improved scarifier for scarifying and levelling gravel roadways, parking lots, and the like, that incorporates an integrated roller device that can be manipulated by articulation to provide greater efficiency and improved scarifying and/or levelling operations.
[0052] Having thus described the basic concept of the invention, it will be rather apparent to those skilled in the art that the foregoing detailed disclosure is intended to be presented by way of example only and is not limiting. Various alterations, improvements, and modifications will occur and are intended to those skilled in the art, though not expressly stated herein. These alterations, improvements, and modifications are intended to be suggested hereby, and are within the spirit and scope of the invention. Additionally, the recited order of processing elements or sequences, or the use of numbers, letters, or other designations therefore, is not intended to limit the claimed processes to any order except as may be specified in the claims. Accordingly, the invention is limited only by the following claims and equivalents thereto.