Patent Application
20190003149
The present disclosure relates to a scraper assembly, and in particular, to a system and method for assembling a wiper wall on the scraper assembly.
Carry-all scrapers and the like are pulled by a tractor or other mover and used to capture and redistribute portions of an underlying surface. Scrapers typically are coupled to the tractor through a hitch and are hydraulically controlled to transition between a scraping configuration, a transport configuration, and a dump configuration. In the scraping configuration, a blade digs into the underlying surface as the scraper is pulled therealong. As the blade digs into the underlying surface, a portion of the underlying surface is disrupted by the blade and deposited into a bucket of the scraper as debris. Once the bucket is full of debris, the blade is raised and no longer contacts the underlying surface during transport. Typically, the full bucket is transported to a dump site where the scraper articulates to the dump configuration and the debris within the bucket is deposited onto the underlying surface.
The typical scraper utilizes overlapping side walls between the bucket and the frame to contain debris therein and facilitate the complete removal of debris during the dump configuration. As the scraper transitions to and from the dump configuration, the overlapping side walls come into close proximity to one another, sometimes contacting one another. Further, debris may become positioned between the overlapping sidewalls.
One embodiment includes a scraper having a frame with a first removable sidewall removably coupled to the frame and a second removable sidewall removably coupled to the frame. A rear bucket may be pivotally coupled to the frame and have a dump position and a carry position, the rear bucket including a first rear sidewall positioned on a first side of the rear bucket and a second rear sidewall positioned on a second side of the rear bucket. Wherein, the first removable sidewall is positioned adjacent to the first rear sidewall and the second removable sidewall is positioned adjacent to the second rear sidewall. Further wherein, as the rear bucket transitions between the carry position and the dump position, the first and second removable sidewalls move relative to the surface of the corresponding first and second rear sidewalls.
One example of this embodiment includes a first and second bracket coupled to the frame, wherein the first and second removable sidewalls are removably coupled to the corresponding first and second bracket. Further, the first removable sidewall is coupled to the first bracket at a first bracket face, wherein the first bracket face is not planar. Further, the second removable sidewall is coupled to the second bracket at a second bracket face, wherein the second bracket face is not planar.
In another example, there may be one or more removable fastener coupling the first and second removable sidewall to the frame. Wherein the one or more removable fastener couples the first removable sidewall to the frame in a non-planar orientation and the one or more removable fastener couples the second removable sidewall to the frame in a non-planar orientation.
In yet another example, the first and second removable sidewalls each have a scraping end and a coupling end, the coupling end having an L-shaped profile.
In another example of this embodiment, a portion of the respective first and second removable sidewalls is drawn towards the respective first and second rear sidewalls when the first and second removable sidewalls are coupled to the frame.
Another embodiment includes a method of manufacturing a scraper, including providing a frame assembly, a bucket assembly having at least one sidewall, at least one removable sidewall, and fasteners, pivotally coupling the frame assembly to the bucket assembly, and removably coupling the removable sidewall to the frame with one or more fastener.
In one example, the fasteners are countersunk into the removable sidewall.
In another example, the removably coupling the removable sidewall to the frame with one or more fasteners step includes deforming an outer surface of the removable sidewall out of planar alignment when coupling at least one of the fasteners.
Another example includes providing a bracket and coupling the bracket to the frame, wherein the removable sidewall is coupled to the frame through the bracket. In this example, the bracket is positioned to avoid interference with the at least one sidewall of the bucket assembly when the scraper is in both a dump configuration and a carry configuration.
In another example, the removably coupling the removable sidewall to the frame with one or more fastener step includes deforming the removable sidewall towards the sidewall of the bucket assembly. In this example, a portion of the removable sidewall contacts the sidewall of the bucket assembly.
A different embodiment may be a scraper system having a frame assembly having a frame arm, a bucket assembly having a first sidewall, and a second sidewall removably coupled to the frame arm. Wherein, the bucket assembly is pivotally coupled to the frame arm and the second sidewall is positioned adjacent to the first sidewall.
In one example of this embodiment, the second sidewall is coupled to the frame arm with threaded fasteners.
In another example of this embodiment, the second sidewall is removable from the frame arm without using a cutting tool.
In yet another example, a bracket may be coupled to the frame arm, wherein the second sidewall is coupled to the frame arm via the bracket. Further, the bracket defines a coupling surface that is not planar. Further still, the second sidewall is coupled to the corresponding bracket along the coupling surface.
The above-mentioned aspects of the present disclosure and the manner of obtaining them will become more apparent and the disclosure itself will be better understood by reference to the following description of the embodiments of the disclosure, taken in conjunction with the accompanying drawings, wherein:
Corresponding reference numerals are used to indicate corresponding parts throughout the several views.
The embodiments of the present disclosure described below are not intended to be exhaustive or to limit the disclosure to the precise forms in the following detailed description. Rather, the embodiments are chosen and described so that others skilled in the art may appreciate and understand the principles and practices of the present disclosure.
Referring to
While the embodiment of
Among other things, the frame assembly 102 can accommodate a gate lift assembly 116. The gate lift assembly 116 may have a gate actuator 118 pivotally coupled thereto and configured to reposition a gate 120. The gate lift assembly 116 may transition the gate 120 between an opened position, where debris in the bucket assembly 104 may transition out of the bucket assembly 104 onto an underlying surface, and a closed position, where debris is substantially restricted from passing between the gate 120 and bucket assembly 104 onto the underlying surface.
The frame assembly 102 may be pivotally coupled to a roller assembly 122 at a rear end 124. More specifically, the roller assembly 122 may be one or more wheels coupled to a swingarm 126 that is pivotable about a swingarm axis 128 defined through the first and second frame arms 110, 108. Further, a swingarm actuator 130 may be pivotally coupled between each of the first and second frame arm 110, 108 and the swingarm 126. In this configuration, the swingarm actuators 130 articulate to pivot the roller assembly 122 about the swingarm axis 128, thereby altering the height of the frame assembly 102 relative to the underlying surface.
The scraper assembly 100 may form a cavity 140 in which debris may be stored. The cavity 140 may be defined by the bucket assembly 104 at the rear end 124 and the gate 120 towards a front end 142. Further, a first removable sidewall 138 or first wiper wall is shown partially overlapping a portion of a first bucket sidewall 136 along the first frame arm 110 and a second removable sidewall 132 or second wiper wall may partially overlap a portion of a second bucket sidewall 134 at the second frame arm 108 to form opposing sides of the cavity 140. In other words, the scraper assembly 100 may contain debris within the cavity 140 between the sidewalls 138, 136, 132, 134, the bucket assembly 104, and the gate 120.
Referring now to
The scraper 100 is in a carry configuration in
The scraper 100 may transition to the dump position (not particularly shown) by rotating the bucket assembly 104 about a bucket pivot or axis 204. More specifically, referring now to
Now referring to
Although not specifically shown in
The relationship between the first removable sidewall 138 and the first bucket sidewall 136 is described in more detail below. However, the following description for the first removable sidewall 138 and the first bucket sidewall 136 apply similarly to the second removable sidewall 132 and the second bucket sidewall 134. More specifically, the second removable sidewall 132 and the second bucket sidewall 134 may be substantially mirrored components of the first removable sidewall 138 and the first bucket sidewall 136. Accordingly, while this disclosure discusses the relationship of the first removable sidewall 138 and the first bucket sidewall 136 in detail below, the description applies equally to the relationship of the second removable sidewall 132 and the second bucket sidewall 134.
The first removable sidewall 138 may have a leading edge 406 that is meant to contact, or otherwise come into close proximity with, the surface of the first bucket sidewall 136. In one nonexclusive example, when the scraper assembly 100 transitions from the carry position of
Referring now to
In one embodiment, the plurality of sidewall through-holes 502 may be inwardly tapered to correspond with the fasteners. In other words, when the fasteners couple the first removable sidewall 138 to the bracket 508, the heads of the fasteners may be substantially coplanar with a surface of the first removable sidewall 138.
One embodiment of the present disclosure utilizes threaded fasteners with tapered heads on one side coupled to a threaded nut on the other. The tapered head may be positioned along any one of the plurality of sidewall through-holes 502 and the threaded nut may be positioned at an opposite side of the bracket 508 relative to the tapered head. In this embodiment, threaded fasteners may be positioned through each of the corresponding through-holes 502, 506 and the first removable sidewall 138 may be coupled to the bracket 508 by applying a torque to the fasteners.
While threaded fasteners are described above, in one embodiment the first removable sidewall 138 may be coupled to the bracket 508 via stitch welds. In this embodiment, the plurality of sidewall through-holes 502 may be one or more slots defined therethrough. Further, the bracket 508 may have extruded sections along a surface of the bracket 508 that correspond with the slots in the sidewall 138. When the sidewall 138 is properly aligned with the bracket 508, the extruded sections of the bracket 508 may be at least partially positioned within the slots of the sidewall 138. Then, the sidewall 138 may be stitch-welded to the bracket 508 or the first frame arm 110. The stitch welding may be intermittent beads positioned along the sidewall profile that can be accessed and removed from within the cavity 140 of the scraper assembly 100 to allow easy removal of the sidewall 138. Further, in one embodiment a spot weld may be positioned at each of the slots to couple the sidewall 138 to the bracket 508.
Referring now to
The bracket 508 may also have a bucket pivot cutout 604 defined therethrough. The bucket pivot cutout 604 may be positioned proximate to the bucket axis 204 when coupled to the frame arm 110, 108. Further, the bucket pivot cutout 604 may have a profile that corresponds with a bucket finger 304 (
The bracket 508 may have a top portion 606 and a side portion 608 coupled to one another. In one embodiment, the top portion 606 and the side portion 608 are integrally formed from the same material. In a different embodiment, the top portion 606 may be welded or otherwise coupled to the side portion 608. However, as shown in
Offsetting the angle 614 of the top portion plane 610 relative to the side portion plane 612 may allow the removable sidewall 138 to become biased towards the corresponding bucket sidewall 136 when the removable sidewall 138 is coupled to the bracket 508. More specifically, if the removable sidewall 138 is coupled to the bracket 508 utilizing the threaded fasteners described above, the removable sidewall 138 may become biased towards the bucket sidewall 136 as it is threadably coupled to the bracket 508. In other words, the portion of the sidewall 136 coupled to the top portion 606 of the bracket 508 may remain in the top portion plane 610 but the portion of the sidewall 136 coupled to the side portion 608 of the bracket 508 may become biased towards the side portion plane 612.
In one embodiment, the removable sidewall 138 may be defined as having a substantially coplanar body (except for the leading edge 406) when the removable sidewall 138 is not coupled to the bracket 508. However, when the removable sidewall 138 is coupled to the bracket 508, the sidewall 138 may at least partially deform, thereby no longer having a substantially coplanar body. The deformation of the sidewall 138 may bring the leading edge 406 closer to the corresponding bucket sidewall 136, thereby more efficiently scraping debris as the scraper assembly 100 transitions between the carry configuration and the dump configuration.
Deforming the removable sidewall 138 when it is fastened to the bracket 508 may also simplify manufacturing of the removable sidewall 138. As described above, the removable sidewall 138 may be more effective at removing debris if it is tapered towards the corresponding bucket sidewall 136. The above disclosure teaches a method and apparatus that allows the removable sidewall 138 to be deformed during installation instead of when the sidewall is manufactured.
One aspect of the present disclosure is a method for manufacturing the scraper assembly 100. The method includes pivotally coupling the frame assembly 102 to the bucket assembly 104 at the bucket axis 204. Further, the brackets 508 may be coupled to the corresponding frame arms 110, 108. The brackets 508 may be coupled to the corresponding frame arms 110, 108 utilizing any coupling method known in the art. More specifically, in one embodiment the brackets 508 may be welded to the frame arms 110, 108. However, in another embodiment the brackets 508 may be integrally formed with the corresponding frame arms 110, 108. Further, the brackets 508 may be positioned to avoid interference with the corresponding sidewalls 136, 134 of the bucket assembly 104 when the scraper 100 is in both the dump configuration and the carry configuration.
The removable sidewalls 138, 132 may be coupled to the corresponding frame arms 110, 108 through the brackets 508 with the one or more fasteners. As described above, the method includes deforming an outer surface of the removable sidewalls 138, 132 out of planar alignment when coupling the removable sidewalls 138, 132 to the corresponding frame arms 110, 108 with at least one of the fasteners. Further still, in one embodiment of the present disclosure the removable sidewalls 138, 132 will deform sufficiently to contact the corresponding sidewalls 136, 134 when coupled to the brackets 508.
Similarly, the removable sidewalls 138, 132 may be removed from the corresponding frame arms 110, 108 by uncoupling the fasteners from the brackets 508. In other words, the removable sidewalls 138, 132 may be removed without using a cutting tool such as a grinder, saw, torch, or other similar cutting device.
While this disclosure has been described with respect to at least one embodiment, the present disclosure can be further modified within the spirit and scope of this disclosure. This application is therefore intended to cover any variations, uses, or adaptations of the disclosure using its general principles. Further, this application is intended to cover such departures from the present disclosure as come within known or customary practice in the art to which this disclosure pertains and which fall within the limits of the appended claims.
