Simultaneous application device for emulsified asphalt mixture paving of ultra-thin wearing course road surface

Abstract

This utility model discloses a synchronous spraying device for emulsified asphalt in ultra-thin wearing course asphalt mixture paving, solving the problem in the prior art where the number of nozzles remains constant when the spraying width of the outer spraying device is adjusted by rotation, resulting in uneven nozzle coverage density. It includes an outer spraying device positioned on the outer side of the paver's travel path, used to spray emulsified asphalt onto the outer area of ​​the travel path. The outer spraying device is mounted on the paver via a crank. Driven by a rotary drive mechanism, the crank and the outer spraying device rotate as a whole around an axis between the crank and the paver. The axis is vertically oriented, located inside the travel mechanism and close to its center line. When the crank drives the outer spraying device to rotate around the axis, the number of nozzles covering the corresponding outer area on the outer spraying device can increase or decrease accordingly with the direction of rotation.

Description

Technical Field

[0001] This utility model relates to a device for synchronously spreading emulsified asphalt mixture for paving ultra-thin wearing course asphalt mixture, which is particularly suitable for thin overlay construction of cement pavement on highways. Background Technology

[0002] NovaChip technology is an advanced thin-layer overlay construction technique for pavements. Its core lies in restoring and improving pavement performance by rapidly laying an ultra-thin, highly adhesive asphalt wearing course on the existing pavement surface. This technology aims to provide excellent skid resistance, noise reduction, and good durability, and has been widely used globally. It typically uses specially formulated emulsified asphalt as a binder layer, combined with an ultra-thin asphalt mixture surface layer, and is applied simultaneously using integrated equipment to ensure extremely strong adhesion between the old and new pavement layers, thereby extending the pavement's service life.

[0003] Patent document CN101054788A discloses a road finishing machine (actually a paver; similar pavers include the emulsified asphalt synchronous spraying paver in CN106087661A). This type of paver is the main construction equipment for the aforementioned ultra-thin wearing course pavement. The part of this type of paver used for spraying emulsified asphalt includes an outer spraying device, an inner spraying device, and a rear spraying device; the part used for laying the asphalt mixture includes a central fixed screed and telescopic screeds respectively located on both sides. The outer spraying device is located on the outer side of the paver's traveling mechanism's path, used to spray emulsified asphalt onto the outer area of ​​the traveling mechanism; the inner spraying device is located on the inner side of the paver's traveling mechanism's path, used to spray emulsified asphalt onto the inner area of ​​the traveling mechanism; the rear spraying device is located on the rear side of the paver's traveling mechanism's path, used to spray emulsified asphalt onto the rear area of ​​the traveling mechanism.

[0004] In practical use, it was found that because the outer spraying device is hinged to the outside of the machine body, the number of nozzles used on the outer spraying device remains constant when the spraying width of the emulsified asphalt is adjusted by rotating the outer spraying device. This results in uneven nozzle coverage density at different spraying widths. Specifically, at wider spraying widths, the lateral spacing between nozzles is larger, while at narrower spraying widths, the lateral spacing between nozzles is smaller. This may affect the spraying quality of the emulsified asphalt. Utility Model Content

[0005] The purpose of this invention is to provide a synchronous spraying device for emulsified asphalt mixture paving of ultra-thin wearing course asphalt mixture, which solves the problem in the prior art where the number of nozzles remains constant when the outer spraying device is rotated to adjust the spraying width, resulting in uneven nozzle coverage density.

[0006] A synchronous spraying device for emulsified asphalt in ultra-thin wearing course asphalt mixture paving includes an outer spraying device, which is positioned on the outer side of the travel path of the paver's traveling mechanism. The outer spraying device is used to spray emulsified asphalt onto the outer area of ​​the travel path. Nozzles are spaced along the length of the outer spraying device. The outer spraying device is mounted on the paver via a crank. Driven by a rotary drive mechanism, the crank and the outer spraying device rotate as a whole around a shaft between the crank and the paver. The shaft is vertically oriented and located inside the traveling mechanism, close to its center line. When the crank drives the outer spraying device to rotate around the shaft, the number of nozzles covering the corresponding outer area on the outer spraying device increases or decreases accordingly with the direction of rotation.

[0007] As an optimization and / or instantiation of the above-mentioned emulsified asphalt synchronous spraying device for ultra-thin wear layer asphalt mixture paving, further: the crank is installed between the traveling mechanism and the chassis of the paver.

[0008] As an optimization and / or instance of the above-mentioned emulsified asphalt synchronous spraying device for ultra-thin wear course asphalt mixture paving, further: the traveling mechanism has a left track and a right track; the outer side of the left track and the outer side of the right track are each provided with an independent outer spraying device.

[0009] As an optimization and / or instance of the above-mentioned emulsified asphalt synchronous spraying device for ultra-thin wear course asphalt mixture paving, it further includes: an inner spraying device, which is set on the inner side of the travel path of the paver's travel mechanism, for spraying emulsified asphalt on the inner area of ​​the travel path, and nozzles are spaced along the length of the inner spraying device.

[0010] As an optimization and / or instantiation of the above-mentioned emulsified asphalt synchronous spraying device for ultra-thin wear layer asphalt mixture paving, further: when the length direction of the outer spraying device is perpendicular to the travel route direction of the corresponding traveling mechanism, the length direction of the outer spraying device and the length direction of the inner spraying device are on the same straight line.

[0011] As an optimization and / or instantiation of the above-mentioned emulsified asphalt synchronous spraying device for ultra-thin wear layer asphalt mixture paving, further: the rotating shaft is located on the front or rear side of the inner spraying device.

[0012] As an optimization and / or instance of the above-mentioned synchronous spraying device for emulsified asphalt mixture paving of ultra-thin wearing course asphalt mixture, it further includes a rear spraying device, which is set at the rear side of the travel path of the paver's travel mechanism and is used to spray emulsified asphalt on the rear area of ​​the travel path.

[0013] The present invention provides a synchronous spraying device for emulsified asphalt mixture paving of ultra-thin wearing course asphalt mixture. Through a crank-mounted design that allows the outer spraying device to rotate around an axis, the number of nozzles covering the corresponding outer area can be increased or decreased according to the direction of rotation. This unique rotational adjustment mechanism enables the device to adjust the nozzle coverage density at different spray widths, overcoming the defect of uneven coverage caused by a fixed number of nozzles in existing technologies. This improves the uniformity of emulsified asphalt spraying quality at variable widths during the construction of ultra-thin wearing course asphalt mixtures.

[0014] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Additional aspects and advantages of the present invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice. Attached Figure Description

[0015] The accompanying drawings, which form part of this specification, are used to aid in understanding the present invention. The contents provided in the drawings and their related descriptions in this specification can be used to explain the present invention, but do not constitute an undue limitation on the present invention.

[0016] Figure 1 This is a schematic diagram of the structure of the synchronous spraying device for emulsified asphalt mixture paving of ultra-thin wear layer asphalt mixture according to an embodiment of the present invention.

[0017] Figure 2 for Figure 1 The diagram shows the structure of the emulsified asphalt synchronous spraying device for ultra-thin wear layer asphalt mixture paving in another state.

[0018] The markings in the diagram are: outer spraying device 1; walking mechanism 2; inner spraying device 3; rear spraying device 4; crank 11; rotating shaft 12; walking center line 21; fixed ironing device 51; telescopic ironing device 52. Detailed Implementation

[0019] The present invention will now be clearly and completely described in conjunction with the accompanying drawings. Those skilled in the art will be able to implement the present invention based on these descriptions. Before describing the present invention in conjunction with the accompanying drawings, it should be particularly noted that:

[0020] The technical solutions and features provided in the various sections, including the following description, can be combined with each other without conflict. Furthermore, where possible, these technical solutions, features, and related combinations can be given specific technical subject matter and protected by relevant patents.

[0021] The embodiments of the present invention described below are generally only some embodiments and not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of patent protection.

[0022] Regarding terminology and units in this specification: The term "comprising" and any variations thereof in this specification, the corresponding claims, and related sections are intended to cover a non-exclusive inclusion. Furthermore, other related terms and units can be reasonably interpreted based on the relevant information provided in this specification.

[0023] Figure 1 This is a schematic diagram of the structure of the synchronous spraying device for emulsified asphalt mixture paving of ultra-thin wear layer asphalt mixture according to an embodiment of the present invention. Figure 2 for Figure 1 The diagram shows the structure of the emulsified asphalt synchronous spraying device for ultra-thin wear layer asphalt mixture paving in another state. Figures 1-2 The shaded areas represent the sprayed and covered surfaces of the emulsified asphalt. Asphalt mixture is then spread onto these sprayed and covered surfaces using a fixed screed device 51 and a telescopic screed device 52. The emulsified asphalt is first sprayed onto the road surface to be constructed as a bonding layer. Subsequently, the asphalt mixture is spread onto the emulsified asphalt layer under the action of the fixed screed device 51 and the telescopic screed device 52. This simultaneous construction process ensures a good bond between the two layers.

[0024] like Figures 1-2 As shown, this utility model embodiment provides a synchronous spraying device for emulsified asphalt in the paving of ultra-thin wearing course asphalt mixtures, including an outer spraying device 1. The outer spraying device 1 is located on the outer side of the travel path of the paver's travel mechanism 2, and is used to spray emulsified asphalt on the outer area of ​​the travel path. Spray nozzles are spaced apart along the length of the outer spraying device 1.

[0025] Specifically, the outer spraying device 1 is mounted on the paver via a crank 11. Driven by the rotary drive mechanism, the crank 11 and the outer spraying device 1 rotate as a whole around the pivot 12 between the crank 11 and the paver. The pivot 12 is arranged vertically and is located inside the traveling mechanism 2 and close to the traveling centerline 21 of the traveling mechanism 2.

[0026] When the crank 11 drives the outer spraying device 1 to rotate around the shaft 12, the number of nozzles on the outer spraying device 1 covering the corresponding outer area can increase or decrease accordingly with the direction of rotation. This is because when the outer spraying device 1 rotates around the shaft 12, its angle relative to the outer area of ​​the travel path changes, thereby changing the number of nozzles that effectively participate in the spraying operation.

[0027] In this embodiment, the crank 11 is installed between the traveling mechanism 2 and the paver chassis. This installation position ensures the stability of the structure and facilitates maintenance and adjustment.

[0028] Furthermore, the traveling mechanism 2 has a left track and a right track; both the outer side of the left track and the outer side of the right track are equipped with independent outer spraying devices 1. This symmetrical design ensures that the emulsified asphalt spraying effect is consistent on both sides of the paver.

[0029] In a preferred embodiment, the device further includes an inner spraying device 3, which is positioned inside the travel path of the paver's traveling mechanism 2 and is used to spray emulsified asphalt onto the inner area of ​​the travel path. The inner spraying device 3 has nozzles spaced apart along its length.

[0030] When the length direction of the outer spraying device 1 is perpendicular to the travel path direction of the corresponding traveling mechanism 2, the length direction of the outer spraying device 1 and the length direction of the inner spraying device 3 are on the same straight line. This configuration ensures that when the outer spraying device 1 is at its maximum spraying width, the emulsified asphalt sprayed by the inner spraying device 3 and the outer spraying device 1 has the same curing time, and when the outer spraying device 1 is not at its maximum spraying width, the emulsified asphalt sprayed by the inner spraying device 3 and the outer spraying device 1 also has similar curing times. This ensures that a more uniform bond strength can be formed between the emulsified asphalt and the subsequent asphalt mixture throughout the entire paving width, thereby improving the construction quality of the ultra-thin wearing course.

[0031] In this embodiment, the rotating shaft 12 is located on the front or rear side of the inner spraying device 3. This arrangement does not affect the normal operation of the inner spraying device 3, and provides a reasonable support point for the rotation adjustment of the outer spraying device 1.

[0032] Reference Figure 1 and Figure 2 The two different states shown Figure 1 The outer spraying device 1 is in the position of the widest spraying width, at which time the number of nozzles on the outer spraying device 1 covering the corresponding outer area is the largest; Figure 2The display shows that the outer spraying device 1 is in a position with a narrower spraying width, at which point the number of nozzles on the outer spraying device 1 covering the corresponding outer area is relatively small. This adjustment method allows for adjustment of the spraying width according to actual construction needs, while maintaining a relatively uniform nozzle coverage density.

[0033] In another embodiment, the device further includes a rear spraying device 4, which is positioned behind the travel path of the paver's traveling mechanism 2, and is used to spray emulsified asphalt onto the rear area of ​​the travel path. The rear spraying device 4 works in conjunction with the outer spraying device 1 and the inner spraying device 3 to ensure that all areas within the paver's operating range receive sufficient emulsified asphalt spraying.

[0034] The rotary drive mechanism can be hydraulically driven, electrically driven, or pneumatically driven, depending on the overall configuration and usage requirements of the paver. This rotary drive mechanism can precisely control the rotation angle of the crank 11, thereby achieving precise adjustment of the position of the outer spraying device 1.

[0035] In practical use, operators can adjust the rotation position of the outer spraying device 1 around the rotating shaft 12 by controlling the rotary drive mechanism according to factors such as road width and construction requirements, to achieve the best emulsified asphalt spraying effect. This design not only improves construction quality but also enhances the adaptability and flexibility of the equipment.

[0036] The innovative design of the outer spraying device 1, which is mounted using a crank 11 and rotates as a whole around a rotating shaft 12, successfully solves the problem of uneven nozzle coverage density caused by a fixed number of nozzles when adjusting the spraying width. This synchronous spraying device for emulsified asphalt in ultra-thin wearing course asphalt mixture paving can automatically adjust the number of nozzles covering the corresponding outer area according to actual needs, ensuring good spraying quality at different spraying widths, thereby improving the overall effect and quality of ultra-thin wearing course construction.

[0037] The foregoing has described the relevant content of this utility model. Those skilled in the art will be able to implement this utility model based on these descriptions. All other embodiments obtained by those skilled in the art based on the foregoing content of this specification without inventive effort should fall within the scope of patent protection.

Claims

1. A synchronous spraying device for emulsified asphalt in ultra-thin wear course asphalt mixture paving, comprising an outer spraying device (1), wherein the outer spraying device (1) is located on the outer side of the travel path of the paver's traveling mechanism (2), and is used to spray emulsified asphalt on the outer area of ​​the travel path; the outer spraying device (1) is provided with nozzles spaced apart along its length; characterized in that: The outer spraying device (1) is mounted on the paver via a crank (11). Under the drive of the rotary drive mechanism, the crank (11) can drive the outer spraying device (1) and the crank (11) to rotate as a whole around the shaft (12) between the crank (11) and the paver. The shaft (12) is set in the vertical direction and is located inside the traveling mechanism (2) and close to the traveling center line (21) of the traveling mechanism (2). When the crank (11) drives the outer spraying device (1) to rotate around the shaft (12), the number of nozzles on the outer spraying device (1) covering the corresponding outer area can increase or decrease accordingly with the direction of rotation.

2. The pavement ultra-thin friction course asphalt mixture paving and emulsified asphalt synchronous spraying device of claim 1, characterized in that: The crank (11) is installed between the traveling mechanism (2) and the chassis of the paver.

3. The simultaneous paving and emulsified asphalt application device for pavement ultra-thin chip seal asphalt mixture of claim 1, wherein: The walking mechanism (2) has a left track and a right track; both the outer side of the left track and the outer side of the right track are provided with independent outer spraying devices (1).

4. A simultaneous emulsified asphalt application device for paving ultra-thin friction course asphalt mixtures as claimed in any one of claims 1 to 3, characterized in that: It includes an inner spraying device (3), which is located on the inner side of the travel path of the paver's travel mechanism (2) and is used to spray emulsified asphalt on the inner area of ​​the travel path. The inner spraying device (3) has nozzles spaced along its length.

5. The device for simultaneous application of emulsified asphalt to pave ultra-thin wearing course asphalt mixture as described in claim 4, characterized in that: When the length direction of the outer spraying device (1) is perpendicular to the walking path direction of the corresponding walking mechanism (2), the length direction of the outer spraying device (1) and the length direction of the inner spraying device (3) are on the same straight line.

6. The pavement ultra-thin friction course asphalt mixture paving and emulsified asphalt synchronous spraying device of claim 5, characterized in that: The rotating shaft (12) is located in front of or behind the inner spraying device (3).

7. The simultaneous emulsified asphalt application device for paving ultra-thin wearing layer asphalt mixture as claimed in any one of claims 1-3, characterized in that: Includes a rear spraying device (4), which is located on the rear side of the travel path of the paver's travel mechanism (2) and is used to spray emulsified asphalt on the rear area of ​​the travel path.

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