Squeegee border area compaction

Abstract

The present disclosure relates to screed border area compaction. A screed assembly can include a screed plate having a first portion for compacting an asphalt mix into a compacted mat that is flush with a paving surface. The screed plate can also include a second portion for compacting a border area adjacent to the compacted mat and on the paving surface.

Description

Technical Field

[0001] This disclosure relates in general to asphalt paving, and, for example, to a leveling assembly for compacting boundary areas. Background Technology

[0002] Asphalt paving is the process of laying a mixture of asphalt (asphalt) and aggregates (such as sand, gravel, or crushed stone) onto a surface to form a durable and smooth road surface. The asphalt mixture can be heated, conveyed, and spread on a prepared surface (such as a roadbed or driveway) and then compacted to achieve the desired thickness and density.

[0003] A paving machine is a machine that lays paving materials, such as asphalt mixtures, as a compacted subbase onto a prepared surface. A paving machine may include a hopper for receiving the paving material, a distribution system for spreading the material, and a scraper for leveling and compacting the material to achieve the desired thickness and surface finish of the compacted subbase. The scraper has a flat bottom surface to uniformly compact the asphalt mixture, but it cannot compact the seam at the boundary between the compacted subbase and the prepared surface.

[0004] For example, U.S. Patent Application Publication No. 20240229374A1 ('374 Publication) discloses a leveling system including a scraper and a plurality of pressure sensors coupled to the scraper and configured to sense the weight of the scraper. A method for positioning the leveling system includes: receiving pressure information from the plurality of pressure sensors engaged with the scraper; determining a pressure distribution on the scraper based on the pressure information; determining an angle of attack of the scraper based on the determined pressure distribution on the scraper; and adjusting the angle of attack of the scraper.

[0005] The scraping assembly disclosed herein solves one or more of the problems set forth above and / or other problems in the art. Summary of the Invention

[0006] A leveling assembly may include: a first portion for compacting asphalt mixture into a compacted pad flush with the paving surface; and a second portion for compacting a boundary region adjacent to the compacted pad and located on the paving surface.

[0007] A paving machine may include: a tractor having a hopper for storing asphalt mixture; and a leveling assembly for receiving the asphalt mixture from the hopper and spreading the asphalt mixture onto a paving surface, wherein the leveling assembly includes: a first leveling portion for compacting the asphalt mixture into a compacted pad layer parallel to the paving surface; and a second leveling portion for compacting a boundary region adjacent to the compacted pad layer and located on the paving surface. Attached Figure Description

[0008] Figure 1 This is an illustration associated with an example paving machine having a leveling component for compacting the boundary area of ​​the paved surface.

[0009] Figures 2 to 4 This is an illustration of an example of a scraper used to compact the boundary area of ​​a paved surface.

[0010] Figure 5 This is an illustration of an example associated with a conical groove having a textured scraper.

[0011] Figure 6 This is an illustration of an example associated with a safety edge having a textured scraper.

[0012] Figure 7 This is an illustration of an example associated with a mud tank having a textured scraper. Detailed Implementation

[0013] This disclosure relates to a leveling assembly suitable for use with any machine used for asphalt paving. For example, the machine might be an asphalt paving machine.

[0014] Figure 1 This is a schematic diagram associated with an example paving machine 100 having a leveling assembly for compacting the boundary areas of the paved surface. (See diagram for example.) Figure 1 As shown in Example 100, the paving machine 100 may include a tractor 105 comprising a front hopper 110 and a leveling assembly 115. A conveying system 120 having belts, chains, and / or augers may be configured to convey material (e.g., hot asphalt mixture 125) from the hopper 110 to the leveling assembly 115. The leveling assembly 115 may be configured to level the asphalt mixture and shape it into a layer (e.g., a compacted pad 130) having a desired thickness and width. For example, the leveling assembly 115 may include a scraper 135 configured to compact the asphalt mixture into the compacted pad 130 parallel to the paving surface. Furthermore, as will be discussed in more detail below, the scraper 135 may be configured to compact boundary regions adjacent to the compacted pad 130 and located on the paving surface. As indicated above, Figure 1 This is provided as an example. Other examples may differ from those provided. Figure 1 The example described.

[0015] Figures 2 to 4 These are illustrations of examples 200, 300, and 400, respectively, associated with scraper 135 used to compact the boundary area adjacent to and located on the paving surface of the compaction subbase. Figure 2 This is an isometric view of example scraper 135. Figure 3 This is a side view of example scraper 135. Figure 4This is a front view of the example scraper 135.

[0016] Examples 200, 300, and 400 include a scraper 135 having a first portion 205 and a second portion 210. The first portion 205 may be configured to transfer asphalt mixture (e.g., Figure 1 The asphalt mixture 125) is compacted into a compacted subbase that is flush with (e.g., parallel to) the paving surface. Figure 1 The compacted subbase 130). The second part 210 may be configured to compact the boundary area adjacent to the compacted subbase and located on the paving surface.

[0017] As shown in Examples 200, 300, and 400, the first portion 205 and the second portion 210 may be parts of a single scraper 135. For example, the first portion 205 and the second portion 210 may be a single piece of metal or other material constituting the scraper 135. Alternatively, the first portion 205 and the second portion 210 may be separate blocks that can be joined together to form the scraper 135. For example, the first portion 205 and the second portion 210 may be welded together, bonded together with adhesive, secured together using one or more fasteners, and / or combinations thereof, etc.

[0018] The second portion 210 of the scraper 135 may extend from the first portion 205 of the scraper 135. For example, the second portion 210 may be angled relative to the first portion 205 and toward the paving surface. Extension. Angle. It may have a size that is related to (e.g., proportional to) the thickness of the compacted pad.

[0019] The second portion 210 may have a textured bottom surface 220. For example, the textured bottom surface 220 of the second portion 210 may be flat or curved to provide a boundary region 405 of a desired shape. The first portion may also have a bottom surface 225, which may be flat or curved to provide a compacted pad layer 130 of a desired shape. One or more textured bottom surfaces 220, 225 may include ridges (e.g., see...). Figure 6 (or other textures) to further compact the asphalt mixture. Different sections of scraper 135 may have different textures to provide different degrees of compaction.

[0020] The scraper 135 may also include a third portion 215. The second portion 210 and the third portion 215 may be disposed on opposite sides of the first portion 205 of the scraper 135. Thus, the third portion 215 may be configured to compact a boundary region 410 that is different from the boundary region 405 compacted by the second portion 210.

[0021] As indicated above, Figures 2 to 4This is provided as an example. Other examples may differ from those provided. Figures 2 to 4 The example described.

[0022] Figure 5 This is a diagram of an example 500 associated with a tapered groove 505 having a textured scraper 135. For example, the scraper 135 may extend below the tapered groove 505, and the tapered groove 505 may apply a force to compact the asphalt mixture at the boundary region below the tapered groove 505. Alternatively, the scraper 135 may be divided into multiple blocks such that the portion of the scraper 135 below the tapered groove 505 is separate from the rest of the scraper 135. Even when separated, the multiple blocks of the scraper 135 may be adjacent to each other or spaced apart from each other. The shape of the boundary region can be adjusted by adjusting the angle of the tapered groove 505 relative to the paving surface. The force and / or angle of the tapered groove 505 may be adjusted via one or more actuators 510. As indicated above, Figure 5 This is provided as an example. Other examples may differ from those provided. Figure 5 The example described.

[0023] Figure 6 This is an illustration of example 600 associated with a safety edge 605 having a textured scraper 135. As shown in example 600, the bottom surface 220 of the scraper 135 attached to the safety edge 605 includes ridges 610. The safety edge 605 provides force to compact the asphalt mixture at the boundary region below the safety edge 605. Although shown as a separate block, the portion of the scraper 135 attached to the safety edge 605 may be attached to a portion of the scraper 135 below the paver 100, or become part of that scraper. The shape of the boundary region can be adjusted by adjusting the angle of the safety edge 605 relative to the paving surface. The force and / or angle of the safety edge 605 can be adjusted via one or more actuators 610. As indicated above, Figure 6 This is provided as an example. Other examples may differ from those provided. Figure 6 The example described.

[0024] Figure 7This is an illustration of an example 700 associated with a slurry box 705 having a textured scraper. For example, a scraper 135 may extend below the slurry box 705, which may apply a force to compact the asphalt mixture at a boundary region below the slurry box 705. Alternatively, the scraper 135 may be divided into multiple sections, such that the portion of the scraper 135 below the slurry box 705 is separate from the rest of the scraper 135. Even when separated, the multiple sections of the scraper 135 may be adjacent to each other or spaced apart. The shape of the boundary region can be adjusted by adjusting the angle of the slurry box 705 relative to the paving surface. The angle of the slurry box 705 can be adjusted by changing the length of the tether 710 attached to the paver 100 and to the slurry box 705. The tether may include ropes, cables, chains, straps, cords, or combinations thereof. The force applied by the slurry box 705 can be adjusted by increasing or decreasing the weight of the slurry box 705. For example, the weight of the mud tank 705 can be increased by adding stones 715 or other objects. Furthermore, the weight of the mud tank 705 can be decreased by removing stones 715 or other objects. As indicated above, Figure 7 This is provided as an example. Other examples may differ from those provided. Figure 7 The example described.

[0025] Industrial applicability The leveling assembly 115 of this disclosure can compact asphalt mixture 125 into a compacted pad 130, and compact the boundary region 405 adjacent to the compacted pad 130 and located on the paving surface. By compacting the asphalt mixture 125 on the paving surface, for example, using tapered grooves, safety edges, or slurry boxes with textured surfaces (e.g., textured scraper 135), the paving machine 100 can improve the density and stability of the boundary region 405.

[0026] The foregoing disclosure provides examples and descriptions, but is not intended to be exhaustive or to limit the implementations to the precise forms disclosed. Modifications and variations can be made based on the foregoing disclosure, or can be derived from practice of the implementations. Furthermore, any implementation described herein can be combined unless the foregoing disclosure expressly provides a reason why one or more implementations cannot be combined. Even if specific combinations of features are listed in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of various implementations. While each dependent claim listed below may directly depend on only one claim, the disclosure of various implementations includes every dependent claim combined with every other claim in the group of claims.

[0027] As used herein, the terms “a,” “one,” and “a group” are intended to include one or more items and may be used interchangeably with “one or more.” Furthermore, as used herein, the article “the” is intended to include one or more items associated with the article “the” and may be used interchangeably with “one or more.” Further, the phrase “based on” is intended to mean “at least partially based on,” unless otherwise expressly stated. Additionally, as used herein, the term “or,” when used serially, is intended to be inclusive and may be used interchangeably with “and / or,” unless otherwise expressly stated (e.g., if used in combination with “any one” or “only one of”).

[0028] Furthermore, for ease of description, this document may use spatially relative terms such as “below,” “lower,” “above,” “upper,” etc., to describe the relationship of an element or feature to other elements or features illustrated in the figures. In addition to the orientations depicted in the figures, spatially relative terms are intended to encompass different orientations of devices, apparatuses, and / or elements in use or operation. Devices may be oriented in other ways (rotated 90 degrees or otherwise), and the spatially relative descriptions used herein may be interpreted accordingly.

Claims

1. A leveling assembly, the leveling assembly comprising: The first part is used to compact the asphalt mixture into a compacted pad layer flush with the paving surface; and The second part is used to compact the boundary area adjacent to the compacted subbase and located on the paving surface.

2. The leveling assembly according to claim 1, wherein the first portion and the second portion are portions of a single scraper.

3. The leveling assembly according to any one of claims 1 to 2, wherein the second portion extends from the first portion.

4. The leveling assembly according to any one of claims 1 to 3, wherein the second portion extends toward the paving surface at an angle relative to the first portion, wherein the magnitude of the angle is related to the thickness of the compaction layer.

5. The leveling assembly according to any one of claims 1 to 4, wherein the second portion has one of a flat bottom surface, a curved bottom surface, or a textured bottom surface.

6. The leveling assembly of claim 5, wherein the textured bottom surface includes one or more ridges.

7. The leveling assembly according to any one of claims 1 to 6, wherein the first portion has one of a flat bottom surface or a textured bottom surface.

8. The leveling assembly according to any one of claims 1 to 7, the leveling assembly further comprising a third portion, wherein the second portion and the third portion are disposed on opposite sides of the first portion.

9. A paving machine, the paving machine comprising: A tractor unit having a hopper for storing asphalt mixture; and A leveling assembly for receiving the asphalt mixture from the hopper and spreading the asphalt mixture onto the paving surface. The leveling component includes a first leveling part and a second leveling part. The first leveling part is used to compact the asphalt mixture into a compacted pad layer parallel to the paving surface. The second leveling part is used to compact the boundary area adjacent to the compacted pad layer and located on the paving surface.

10. The paving machine of claim 9, wherein the second leveling portion extends toward the paving surface at an angle relative to the first leveling portion, and the magnitude of the angle is related to the thickness of the compacted pad.

Images