Spraying and paving equipment for fiber sealing layer

Abstract

The invention discloses spraying and paving equipment for a fiber sealing layer. The spraying and paving equipment comprises a paving frame, a spiral material distributing machine, a fiber spraying assembly and at least two guide parts, the paving frame is composed of two material blocking plates arranged in the first horizontal direction in a spaced mode, and a paving area is formed between the two material blocking plates. The spiral distributor is mounted in the paving area in a crossing manner and is used for uniformly distributing the asphalt to the paving width in the second horizontal direction. The fiber spraying assembly is arranged on the spreading frame and used for spraying fibers to the front end of the advancing direction of the spiral material distributing machine. The two guiding pieces are oppositely arranged on the two sides of a paving area and connected with the material blocking plates respectively, each guiding piece structurally comprises a material returning face and a material guiding face, asphalt accumulated at the two ends of the spiral material distributing machine can be guided to the center, asphalt on a traveling path can be guided to the center position, asphalt materials accumulated on the paving equipment in the lateral direction are avoided, the shutdown cleaning frequency is reduced, and the paving efficiency is improved. And the working efficiency of the paving equipment is improved.

Description

Technical Field

[0001] This invention relates to the field of paving equipment technology, and in particular to a fiber seal spraying paving equipment. Background Technology

[0002] As a core piece of equipment for preventative highway maintenance, fiber seal coat spraying and paving equipment faces a significant technical bottleneck in actual continuous operation: due to the boundary effect between asphalt spraying and fiber aggregate spreading, and the limitations of the equipment structure, a small amount of excess asphalt mixture is inevitably pushed to both sides of the equipment's travel direction and accumulates continuously. As the paving process progresses, this laterally accumulated asphalt material gradually cools and solidifies, increasing its viscosity and mixing with loose aggregate to form hard, viscous clumps. This severely hinders the normal movement of the equipment's tracks or tires, leading to a sharp increase in traction resistance and engine load. This not only causes unstable equipment operation and speed fluctuations, affecting the uniformity and smoothness of the seal coat paving, but also triggers frequent shutdowns for cleaning, increasing equipment wear and labor costs, ultimately restricting construction efficiency and project quality. Current passive cleaning methods relying on manual intervention cannot fundamentally resolve the contradiction between dynamic asphalt accumulation and continuous operation.

[0003] Therefore, the present invention provides a fiber seal spraying paving device to avoid the lateral accumulation of asphalt material on the paving device, reduce the frequency of downtime for cleaning, and improve the working efficiency of the paving device. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the present invention aims to provide a fiber seal spraying paving equipment, which can reduce the asphalt material accumulating on the side of the paving equipment, reduce the frequency of downtime for cleaning, and improve the working efficiency of the paving equipment.

[0005] The objective of this invention is achieved through the following technical solution:

[0006] A fiber seal spraying and paving device includes:

[0007] A paving frame, comprising two baffles, the two baffles extending at intervals along a first horizontal direction, the interval between the two baffles being the paving area, and a direction perpendicular to the first horizontal direction being defined as the second horizontal direction;

[0008] A spiral distributor is installed in the paving area, with one of the baffle plates connected to each end of the spiral distributor. The spiral distributor is used to distribute asphalt in the direction of travel onto the paving width.

[0009] A fiber spraying assembly is mounted on and supported by the paving frame and is used to spray fibers to the front end of the spiral feeder in the direction of travel.

[0010] At least two guide members are provided, which are disposed opposite each other in the paving area and connected to one of the baffle plates. The auger and the guide members are distributed at intervals along the first horizontal direction. The two guide members extend close to each other along the second horizontal direction with a certain interval between them. Each guide member has a return surface and a guide surface. The starting end of the return surface and the starting end of the guide surface are both connected to one of the baffle plates. The ending ends of the return surface and the guide surface are the ends of the guide members extending along the second horizontal direction. The interval between the starting end of the return surface and the auger is smaller than the interval between the ending end of the return surface and the auger. The interval between the starting end of the guide surface and the auger is larger than the interval between the ending end of the guide surface and the auger. The guide surface is used to guide the asphalt on the paving equipment's travel path to the center position of the auger. The return surface is used to guide the asphalt accumulated at both ends of the auger to the center position of the auger.

[0011] Furthermore, the guide member slides against the baffle plate, and both the guide member and the baffle plate are provided with a plurality of pin holes extending along the first horizontal direction. One of the pin holes on the guide member can correspond to any of the pin holes on the baffle plate.

[0012] Furthermore, the return surface is an arc surface, which bends toward the starting end of the guide surface to form a receiving space. A rotary guide extending along the direction of gravity is provided in the receiving space. The rotary guide is used to drive the asphalt accumulated at both ends of the spiral distributor away from the spiral distributor and guide it to the center position of the spiral distributor.

[0013] Furthermore, the fiber spraying assembly includes a fiber bin, multiple spray pipes, multiple air pumps, and an adjustment mechanism. The fiber bin extends along a second horizontal direction, and each end of the fiber bin is connected to a baffle plate. The spray pipes extend along the direction of gravity, and the multiple spray pipes are spaced apart along the second horizontal direction. Each of the multiple spray pipes is connected to an air pump. One end of each spray pipe is spaced apart from the paving surface, and the other end of each spray pipe communicates with the fiber bin. The air pumps are used to spray the fibers from the fiber bins out of the spray pipes. The adjustment mechanism is installed on the paving frame and is used to adjust the position of the spray pipes in the first horizontal direction or the direction of gravity.

[0014] Further, the adjustment mechanism includes a pivot shaft, a rotary drive mechanism, at least two horizontal adjustment rods, a height adjustment rod, and a support plate. The pivot shaft extends along a second horizontal direction, and one of the baffle plates is hinged to each end of the pivot shaft. The pivot shaft is located above the screw conveyor. The rotary drive mechanism is mounted on one of the baffle plates and supported by the baffle plate. The rotary drive mechanism is driven by the pivot shaft and is used to drive the pivot shaft to rotate around its axis. The two horizontal adjustment rods are symmetrically and spaced apart. The horizontal adjustment rods extend along a first horizontal direction, and one end of each horizontal adjustment rod is hinged to the baffle plate. One end of each height adjustment rod remains relatively stationary with respect to the pivot shaft, and the other end of each height adjustment rod is connected to the horizontal adjustment rod. The support plate extends horizontally along a second horizontal direction, and one of its ends is connected to one of the horizontal adjustment rods. Multiple nozzles are connected to the support plate and remain relatively stationary with respect to the support plate.

[0015] Furthermore, the horizontal adjusting rod is provided with a sliding groove, which extends along a first horizontal direction and engages with one end of the support plate, so that the support plate can be displaced along the extension direction of the sliding groove, so that the nozzle moves closer to or further away from the spiral distributor.

[0016] Furthermore, the spiral feeder, the nozzle, and the guide are arranged sequentially along the first horizontal direction. The guide has a limiting member, one end of which remains relatively stationary with respect to the guide, and the other end of which is inserted into the support plate. The limiting member is used to maintain a preset distance between the guide and the support plate in the first horizontal direction.

[0017] Furthermore, the plurality of nozzles are movably connected to the support plate, and the nozzles are capable of rotating about their own axis.

[0018] Furthermore, the guide member is disposed between the nozzle and the spiral feeder.

[0019] Furthermore, the rotary drive mechanism is an electric motor.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. The design of spraying fibers onto the front of the spiral distributor in the direction of travel, based on the fiber spraying component, allows the fibers to be spread evenly on the pavement before paving, creating ideal conditions for subsequent asphalt coverage and bonding. This arrangement achieves sequential and layered spraying of fibers and asphalt, ensuring that the fibers are initially pressed into and evenly dispersed in the asphalt during the operation of the spiral distributor. This effectively avoids problems such as clumping and uneven distribution that may occur when fibers and asphalt are sprayed simultaneously, thereby significantly enhancing the network reinforcement effect and overall mechanical properties of the fiber seal layer, and improving the crack resistance, durability, and seal quality of the pavement.

[0022] 2. Based on the design of the guide surface and the return surface of the guide component, the guide surface, with its inclined structure of starting point away from the spiral distributor and ending point close to it, can actively and efficiently guide and collect the asphalt fluid on the path directly in front of the equipment into the effective working area of ​​the spiral distributor, ensuring sufficient and uniform material flow in the center. Simultaneously, the return surface, with its inclined surface of starting point close to and ending point far from the spiral distributor, can continuously guide excess asphalt mixture that has been pushed to both ends of the spiral distributor and begun to cool and solidify in the opposite direction, forcibly transporting it back to the central high-temperature zone for remixing and distribution. This dual-sided synergistic effect fundamentally and dynamically solves the problem of asphalt accumulation on the side of the equipment, effectively preventing the formation of hard material ridges, thereby significantly reducing equipment travel resistance and engine load, avoiding frequent shutdowns for cleaning due to material accumulation, ensuring the continuous stability and uniformity of the paving operation, and ultimately achieving the goals of improving construction efficiency, reducing maintenance costs, and improving project quality. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a fiber seal spraying and paving device according to the present invention;

[0024] Figure 2 for Figure 1 Another perspective structural diagram;

[0025] Figure 3 for Figure 1 Cross-sectional view.

[0026] In the diagram: 1. Paving frame; 101. Baffle plate; 2. Spiral feeder; 3. Fiber spraying assembly; 301. Fiber bin; 302. Spray pipe; 303. Air pump; 304. Adjustment mechanism; 311. Pivot shaft; 312. Rotary drive mechanism; 313. Horizontal adjustment rod; 321. Slide groove; 314. Height adjustment rod; 315. Support plate; 4. Guide component; 401. Return surface; 402. Guide surface; 5. Pin hole; 6. Accommodation space; 7. Rotary guide; 8. Limiting component. Detailed Implementation

[0027] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0028] It should be noted that when an element is described as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is described as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] See Figures 1-3A preferred embodiment of the fiber seal spraying paving equipment of the present invention includes a paving frame 1, a spiral distributor 2, a fiber spraying assembly 3, and at least two guide members 4. The paving frame 1 includes two baffle plates 101, which extend at intervals along a first horizontal direction, the interval between the two baffle plates 101 being the paving area, and the direction perpendicular to the first horizontal direction being defined as the second horizontal direction. The spiral distributor 2 is installed in the paving area, and its two ends are respectively connected to one of the baffle plates 101. The spiral distributor 2 is used to distribute asphalt in the direction of travel onto the paving width. The fiber spraying assembly 3 is installed on the paving frame 1 and supported by the paving frame 1. The fiber spraying assembly 3 is used to spray fibers to the front end of the spiral distributor 2 in the direction of travel. The two guide members 4 are disposed opposite each other in the paving area and connected to one of the baffle plates 101. The spiral distributor 2 and the guide members 4 extend at intervals along the first horizontal direction. Two guide members 4 are distributed at intervals in the horizontal direction, extending close to each other along the second horizontal direction with a certain gap between them. Each guide member 4 has a return surface 401 and a guide surface 402. The starting end of the return surface 401 and the starting end of the guide surface 402 are both connected to one of the baffle plates 101. The ending ends of the return surface 401 and the guide surface 402 are the ends of the guide members 4 extending along the second horizontal direction. The gap between the starting end of the return surface 401 and the spiral distributor 2 is smaller than the gap between the ending end of the return surface 401 and the spiral distributor 2. The gap between the starting end of the guide surface 402 and the spiral distributor 2 is larger than the gap between the ending end of the guide surface 402 and the spiral distributor 2. The guide surface 402 is used to guide the asphalt on the paving equipment's travel path to the center position of the spiral distributor 2. The return surface 401 is used to guide the asphalt accumulated at both ends of the spiral distributor 2 to the center position of the spiral distributor 2.

[0031] The working principle of this invention is as follows: When the equipment is moving, the fiber spraying component 3 first sprays fibers onto the asphalt in front of the spiral distributor 2; then, the spiral distributor 2 rotates and spreads the asphalt evenly along the second horizontal direction to the required width, while the spiral distributor 2 mixes the asphalt and fibers evenly during the spreading process. During this process, the guide components 4 installed on both sides of the paving area play a crucial role: their guiding surface 402, with its inclined structure (starting end away from the spiral distributor 2 and ending end close to it), effectively guides and concentrates the asphalt on the path directly in front of the equipment to the central area of ​​the spiral distributor 2; simultaneously, the return surface 401, with its inclined design (starting end close to it and ending end away from it), can guide the asphalt mixture that has accumulated at both ends of the spiral distributor 2 back into the distribution range of the spiral distributor 2. Through the double-sided guiding effect, the accumulation and solidification of asphalt on the side of the equipment is effectively avoided, ensuring the continuous and stable movement of the equipment and the paving quality, and reducing downtime and manual cleaning requirements caused by material accumulation.

[0032] Clearly, the design of the fiber spraying component 3, which sprays fibers to the front of the spiral distributor 2 in the direction of travel, allows the fibers to be spread evenly and pre-positioned on the pavement, creating ideal conditions for subsequent asphalt coverage and bonding. This arrangement achieves sequential and layered application of fibers and asphalt, ensuring that the fibers are initially pressed into and evenly dispersed within the asphalt during the operation of the spiral distributor 2. This effectively avoids problems such as clumping and uneven distribution that may occur when fibers and asphalt are sprayed simultaneously, thereby significantly enhancing the network reinforcement and overall mechanical properties of the fiber seal layer, and improving the pavement's crack resistance, durability, and seal quality.

[0033] Based on the design of the guide component 4, the return surface 401 and the guide surface 402, the guide surface 402, with its inclined structure (starting point away from the spiral distributor 2 and ending point close to it), can actively and efficiently guide and collect the asphalt fluid on the path directly in front of the equipment into the effective working area of ​​the spiral distributor 2, ensuring sufficient and uniform material flow in the center. Simultaneously, the return surface 401, with its inclined surface (starting point close to it and ending point away from it), can continuously guide excess asphalt mixture that has been pushed to both ends of the spiral distributor 2 and begun to cool and solidify in the reverse direction, forcibly transporting it back to the central high-temperature zone for remixing and distribution. This dual-sided synergistic effect fundamentally and dynamically solves the problem of asphalt accumulation on the side of the equipment, effectively preventing the formation of hard material ridges, thereby significantly reducing equipment travel resistance and engine load, avoiding frequent shutdowns for cleaning due to material accumulation, ensuring the continuous stability and uniformity of the paving operation, and ultimately achieving the goals of improving construction efficiency, reducing maintenance costs, and improving project quality.

[0034] More preferably, the guide member 4 slides against the baffle plate 101. Both the guide member 4 and the baffle plate 101 are provided with multiple pin holes 5 extending along the first horizontal direction. Each pin hole 5 on the guide member 4 can correspond to any pin hole 5 on the baffle plate 101. In this embodiment, the guide member 4 and the baffle plate 101 are slidably connected along the first horizontal direction (i.e., the direction of equipment travel) and multiple sets of pin holes 5 extending along this direction are provided, so that the operator can easily adjust the position of the guide member 4 relative to the screw conveyor 2, or move it away as a whole. This design not only enables the equipment to precisely adjust the optimal working distance between the guide surface 402 and the return surface 401 and the spiral distributor 2 according to working conditions such as asphalt temperature, viscosity and paving speed, so as to accurately control the material flow guidance and the efficiency of material recovery, but also shows significant advantages in equipment maintenance: when the spiral distributor 2 needs to be inspected or cleaned, the guide component 4 can be quickly slid away from the working area along the baffle plate 101, easily making room for sufficient and safe operation, which greatly facilitates maintenance work, avoids the cumbersome process of disassembling parts under the traditional structure, effectively shortens maintenance time, reduces downtime, and thus comprehensively improves the maintainability and overall efficiency of the equipment.

[0035] More preferably, the return surface 401 is an arc surface, which curves towards the starting end of the guide surface 402 to form a receiving space 6. A rotary guide 7 extending along the direction of gravity is provided within the receiving space 6. The rotary guide 7 is used to drive the asphalt accumulated at both ends of the screw conveyor 2 away from the screw conveyor 2 and guide it to the center position of the screw conveyor 2. The curved arc structure physically moves the accumulated asphalt mixture away from the screw conveyor 2 body, creating an independent and smooth channel for its subsequent return flow, thereby effectively avoiding interference and conflict with the asphalt flow that is being rapidly distributed in the width direction by the screw conveyor 2 during the recovery of cold material. The rotary guide 7, located within the receiving space 6, actively rotates, further crushing and pushing the cold material gathered there, stably and efficiently transporting it back to the central area along this dedicated path. This "first move away, then return" design ensures the continuous and uninterrupted material distribution function of the spiral feeder 2, while significantly improving the efficiency and reliability of cold material recovery. It fundamentally eliminates quality defects such as uneven paving and aggregate scratches caused by material flow intersection, and significantly improves the stability of equipment operation and the uniformity of the sealing layer.

[0036] More preferably, the fiber spraying assembly 3 includes a fiber bin 301, multiple spray pipes 302, multiple air pumps 303, and an adjustment mechanism 304. The fiber bin 301 extends along a second horizontal direction, and each end of the fiber bin 301 is connected to a baffle plate 101. The spray pipes 302 extend along the direction of gravity, and the multiple spray pipes 302 are spaced apart along the second horizontal direction. Each spray pipe 302 is connected to an air pump 303. One end of each spray pipe 302 is spaced apart from the paving surface, and the other end of each spray pipe 302 is connected to the fiber bin 301. The air pumps 303 are used to spray the fibers from the fiber bin 301 out of the spray pipes 302. The adjustment mechanism 304 is mounted on the paving frame 1 and is used to adjust the position of the spray pipes 302 in the first horizontal direction or the direction of gravity. The fiber bin 301 extends along the second horizontal direction (i.e., the paving width direction) and is fixed to the baffle plate 101, providing a stable supply source of fibers. Multiple nozzles 302, extending along the direction of gravity, are spaced apart in the width direction and driven by an independent air pump 303. This allows for the uniform, precise, and controllable spraying of fibers onto the paving surface using a high-pressure airflow, avoiding problems such as fiber clumping and uneven distribution that are common in traditional mechanical spreading. This ensures the continuity and consistency of the fiber network. Notably, the position of the nozzles 302 in the direction or height of the equipment's travel can be flexibly adjusted via the adjustment mechanism 304. This allows operators to optimize the fiber placement and distribution pattern in real time based on the construction speed, fiber type, and expected coverage effect. This ensures optimal timing and interlayer bonding with subsequent asphalt spraying and spiral distribution, significantly improving the reinforcement quality of the fiber seal layer and the crack resistance of the pavement. It also enhances the equipment's adaptability to complex working conditions and construction flexibility.

[0037] More preferably, the adjusting mechanism 304 includes a pivot shaft 311, a rotary drive mechanism 312, at least two horizontal adjusting rods 313, a height adjusting rod 314, and a support plate 315. The pivot shaft 311 extends along a second horizontal direction, and one of the baffle plates 101 is hinged to each end of the pivot shaft 311. The pivot shaft 311 is located above the screw conveyor 2. The rotary drive mechanism 312 is mounted on one of the baffle plates 101 and supported by the baffle plate 101. The rotary drive mechanism 312 is driven by the pivot shaft 311 and is used to drive the pivot shaft 311 around the pivot shaft 311. The axis of the paving is rotated, and two horizontal adjusting rods 313 are symmetrically and spaced apart. The horizontal adjusting rods 313 extend along the first horizontal direction, and one end of the horizontal adjusting rod 313 is hinged to the baffle plate 101. One end of the height adjusting rod 314 is kept relatively stationary with the pivot shaft 311, and the other end of the height adjusting rod 314 is connected to the horizontal adjusting rod 313. The support plate 315 extends horizontally along the second horizontal direction, and both ends of the support plate 315 are connected to one of the horizontal adjusting rods 313. Multiple nozzles 302 are connected to the support plate 315 and kept relatively stationary with respect to the support plate 315. The rotary drive mechanism 312 can drive the pivot shaft 311 extending along the paving width direction (second horizontal direction) to rotate, and then drive the horizontal adjusting rods 313 and the entire support plate 315 to move up and down through the height adjusting rod 314, thereby adjusting the height of all nozzles 302 off the ground as a whole, ensuring that the fiber can be sprayed evenly at the optimal distance under different paving thickness requirements. Meanwhile, the hinged design of the horizontal adjustment rod 313 and the baffle plate 101 allows the support plate 315 to swing at an angle along the equipment's travel direction (first horizontal direction), thereby flexibly adjusting the fiber contact point relative to the spiral distributor 2 and achieving precise matching of the fiber and asphalt spraying sequence. This integrated adjustment capability of height and forward / backward position optimizes the distribution and embedding effect of fibers in asphalt, effectively preventing problems such as fiber clumping, uneven distribution, or scattering due to asphalt impact, improving the reinforcement network quality of the fiber seal layer and the crack resistance of the pavement, while also enhancing the equipment's adaptability to complex construction conditions.

[0038] More preferably, the horizontal adjusting rod 313 is provided with a groove 321, which extends along the first horizontal direction. The groove 321 engages with one end of the support plate 315, allowing the support plate 315 to move along the extension direction of the groove 321, so that the nozzle 302 can move closer to or further away from the screw conveyor 2. By providing a groove 321 extending along the first horizontal direction (the direction of equipment travel) on the horizontal adjusting rod 313, and by engaging one end of the support plate 315 with the groove 321, the nozzle 302 assembly can be flexibly moved back and forth along the direction of travel. This allows the operator to precisely adjust the relative distance between the nozzle 302 outlet and the rotating blades of the screw conveyor 2 according to the fiber characteristics, asphalt spraying status, and paving speed. Through this displacement adjustment, the timing of the fiber contact point and the asphalt coverage point can be precisely controlled, avoiding the fiber being blown away or interfered with by the high-speed rotating screw blades, and ensuring that the fiber is effectively covered and embedded by the subsequent asphalt in a timely manner. This avoids material waste or distribution defects caused by improper placement, further enhances the equipment's adaptability to complex construction parameters, and ensures the uniformity and final road performance of the fiber-reinforced seal layer.

[0039] More preferably, the spiral feeder 2, the nozzle 302, and the guide 4 are sequentially distributed along the first horizontal direction. The guide 4 has a limiting member 8, one end of which remains relatively stationary with respect to the guide 4, and the other end of which is inserted into the support plate 315. The limiting member 8 is used to maintain a preset distance between the guide 4 and the support plate 315 in the first horizontal direction. The core function of this limiting member 8 structure is to solve the interference problem between the support plate 315 and the guide 4 in spatial movement. On the one hand, when it is necessary to adjust the horizontal forward and backward displacement of the nozzle 302 assembly through the slide groove 321, the limiting member 8 firmly maintains the preset lateral distance between the support plate 315 and the guide 4 through its insertion connection, effectively preventing the support plate 315 from colliding or getting stuck with the fixed guide 4 during movement, ensuring the smoothness and accuracy of the horizontal adjustment process. On the other hand, this plug-in design achieves motion decoupling in the vertical direction. When the adjusting mechanism 304 drives the support plate 315 to raise and lower the nozzle 302 as a whole, the limiting member 8 allows the support plate 315 to move freely upward without forcibly lifting the guide member 4. This ensures the stability of the installation height of the guide member 4 and the constant relative position between its scraping and guiding surfaces and the paving layer. This not only protects the independence of each adjustment function and avoids mutual interference, but also simplifies the operation process and enhances the reliability of the adjustment of different functional modules of the equipment and the stability of the overall structure.

[0040] More preferably, multiple nozzles 302 are movably connected to the support plate 315, and the nozzles 302 can rotate around their own axes. The movable connection between the nozzles 302 and the support plate 315 allows operators to quickly disassemble for replacement or cleaning, greatly improving maintenance convenience. More importantly, each nozzle 302 can rotate around its own axis, allowing the spray direction of the nozzle to be independently and precisely adjusted according to actual working conditions. By rotating the nozzles 302, the fiber ejection angle and diffusion pattern can be precisely controlled, ensuring that the fibers can uniformly cover the asphalt surface in the most ideal way. This effectively avoids localized accumulation, fiber scattering, or interference with other equipment components (such as the blades of the screw conveyor) caused by a fixed direction, thereby improving the uniformity of fiber distribution, material utilization, and the reinforcement effect of the final sealing layer.

[0041] More preferably, the guide component 4 is positioned between the nozzle 302 and the spiral distributor 2. This arrangement, placing the guide component 4 between the nozzle 302 and the spiral distributor 2, has the core benefit of creating an effective physical isolation zone: the asphalt mixture flowing back from both sides of the spiral distributor 2, guided by the return surface 401, is first blocked and constrained by the guide component 4 along its movement path. This barrier effectively prevents the risk of treated, potentially impurity-laden, or unevenly heated return asphalt spreading forward (i.e., towards the direction of equipment movement) into the fiber spraying area, thus preventing these return materials from contacting and mixing with the clean fibers newly sprayed from the nozzle 302. This avoids fiber contamination or clumping due to old material inclusion, ensuring the uniformity of fiber distribution and network integrity; it also prevents the repeated spraying of fibers onto asphalt that has already cooled at the edges, solving quality defects such as uneven seal thickness and reduced adhesion caused by repeated material coverage, thus improving construction quality and material utilization efficiency.

[0042] More preferably, the rotary drive mechanism 312 is an electric motor. The motor drive can output stable and controllable rotational torque, enabling precise and intelligent control of the rotation angle and speed of the pivot shaft 311. This makes the overall height adjustment process of the support plate 315 and all the nozzles 302 on it smoother and more reliable, and allows it to precisely stop at any preset position, thereby greatly improving the consistency and accuracy of the fiber spraying height adjustment, effectively ensuring the stability of construction quality and the level of automation in equipment operation.

[0043] In summary, the present invention has, but is not limited to, the following beneficial effects:

[0044] 1. This invention constructs a material guiding and isolation system by setting a guide member 4 with a unique return surface 401 and a guide surface 402, preferably positioned between the fiber nozzle 302 and the spiral distributor 2. The guide surface 402 gathers incoming material to the center, while the return surface 401 continuously guides the cold-bonded asphalt mixture accumulated on both sides back to the high-temperature zone in the center for redistribution. This design dynamically prevents the material from cooling, accumulating, and solidifying on the side of the equipment from the source, completely avoiding the formation of hard material ridges, thereby significantly reducing the equipment's travel resistance and engine load, reducing frequent shutdowns caused by cleaning accumulated material, ensuring the continuous stability and smoothness of the paving operation, and significantly improving construction efficiency and project quality.

[0045] 2. The fiber spraying assembly 3 of this invention adopts a design combining independent pneumatic spraying with multiple nozzles 302 and a multi-degree-of-freedom adjustment mechanism 304, achieving precise and controllable fiber spreading. By rotating the pivot shaft 311 driven by a motor, the ground clearance of the nozzles 302 can be adjusted as a whole; utilizing the hinge and sliding groove 321 design of the horizontal adjustment rod 313, the front-to-back position and angle of the nozzle group 302 can be finely adjusted. This allows the fiber contact point and dispersion pattern to be optimized according to vehicle speed and material characteristics, ensuring that the fibers are timely and evenly covered and embedded by subsequent asphalt, effectively preventing fiber clumping, uneven distribution, or scattering, and greatly enhancing the network reinforcement effect of the fiber seal layer and the crack resistance and durability of the road surface.

[0046] 3. The modular and adjustable structural design of this invention significantly improves the adaptability and maintainability of the equipment. The guide member 4 and the baffle plate 101 achieve rapid adjustment or separation of their front and rear positions through sliding contact and pin holes 5, providing space for maintenance of the screw conveyor 2. The nozzle 302 and the support plate 315 are movably connected and can rotate, facilitating replacement, cleaning, and angle fine-tuning. The limiting member 8 ensures the independence and positional accuracy of the nozzle 302 and guide member 4 during horizontal and vertical adjustments. These designs collectively improve adaptability to different working conditions, simplify maintenance procedures, reduce downtime, and lower operating costs.

[0047] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0048] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0049] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A fiber seal spraying and paving device, characterized in that, include: A paving frame (1) includes two baffle plates (101), which are spaced apart along a first horizontal direction. The space between the two baffle plates (101) is the paving area, and the direction perpendicular to the first horizontal direction is defined as the second horizontal direction. Spiral distributor (2), the spiral distributor (2) is installed in the paving area, and one of the baffle plates (101) is connected to each end of the spiral distributor (2). The spiral distributor (2) is used to distribute asphalt in the direction of travel to the paving width. Fiber spraying assembly (3), which is installed on and supported by the paving frame (1), is used to spray fibers to the front end of the spiral feeder (2) in the direction of travel; At least two guide members (4) are provided opposite to each other in the paving area and connected to one of the baffle plates (101). The spiral feeder (2) and the guide members (4) are distributed at intervals along the first horizontal direction. The two guide members (4) extend close to each other along the second horizontal direction and are spaced apart. Each guide member (4) has a return surface (401) and a guide surface (402). The starting end of the return surface (401) and the starting end of the guide surface (402) are both connected to one of the baffle plates (101). The ending ends of the return surface (401) and the guide surface (402) are connected to each other. The guide (4) extends along the second horizontal direction. The distance between the starting end of the return surface (401) and the spiral distributor (2) is smaller than the distance between the ending end of the return surface (401) and the spiral distributor (2). The distance between the starting end of the guide surface (402) and the spiral distributor (2) is larger than the distance between the ending end of the guide surface (402) and the spiral distributor (2). The guide surface (402) is used to guide the asphalt on the paving equipment travel path to the center position of the spiral distributor (2). The return surface (401) is used to guide the asphalt accumulated at both ends of the spiral distributor (2) to the center position of the spiral distributor (2).

2. The fiber seal spraying and paving equipment according to claim 1, characterized in that, The guide member (4) slides against the baffle plate (101). Both the guide member (4) and the baffle plate (101) are provided with a plurality of pin holes (5) extending along the first horizontal direction. One of the pin holes (5) on the guide member (4) can correspond to any pin hole (5) on the baffle plate (101).

3. The fiber seal spraying and paving equipment according to claim 1, characterized in that, The return surface (401) is an arc surface, which bends toward the starting end of the guide surface (402) to form a receiving space (6). A rotary guide (7) extending along the direction of gravity is provided in the receiving space (6). The rotary guide (7) is used to drive the asphalt accumulated at both ends of the spiral distributor (2) away from the spiral distributor (2) and guide it to the center of the spiral distributor (2).

4. The fiber seal spraying and paving equipment according to claim 1, characterized in that, The fiber spraying assembly (3) includes a fiber bin (301), multiple spray pipes (302), multiple air pumps (303), and an adjustment mechanism (304). The fiber bin (301) extends along a second horizontal direction, and each end of the fiber bin (301) is connected to a baffle plate (101). The spray pipes (302) extend along the direction of gravity, and the multiple spray pipes (302) are spaced apart along the second horizontal direction. Each of the multiple spray pipes (302) is connected to a... An air pump (303) is provided, one end of the nozzle (302) is spaced apart from the paving surface, and the other end of the nozzle (302) is connected to the fiber bin (301). The air pump (303) is used to spray the fibers in the fiber bin (301) out of the nozzle (302). An adjustment mechanism (304) is installed on the paving frame (1). The adjustment mechanism (304) is used to adjust the position of the nozzle (302) in the first horizontal direction or the direction of gravity.

5. The fiber seal spraying and paving equipment according to claim 4, characterized in that, The adjusting mechanism (304) includes a pivot shaft (311), a rotary drive mechanism (312), at least two horizontal adjusting rods (313), a height adjusting rod (314), and a support plate (315). The pivot shaft (311) extends along a second horizontal direction, and one of the baffle plates (101) is hinged to each end of the pivot shaft (311). The pivot shaft (311) is located above the screw conveyor (2). The rotary drive mechanism (312) is mounted on one of the baffle plates (101) and supported by the baffle plate (101). The rotary drive mechanism (312) is drivenly connected to the pivot shaft (311) and is used to drive the pivot shaft (311) around the pivot shaft (311). The axis of 311) rotates, and the two horizontal adjusting rods (313) are symmetrically and spaced apart. The horizontal adjusting rods (313) extend along the first horizontal direction. One end of the horizontal adjusting rod (313) is hinged to the baffle plate (101). One end of the height adjusting rod (314) remains relatively stationary with respect to the pivot shaft (311). The other end of the height adjusting rod (314) is connected to the horizontal adjusting rod (313). The support plate (315) extends horizontally along the second horizontal direction. Both ends of the support plate (315) are respectively connected to one of the horizontal adjusting rods (313). Multiple nozzles (302) are connected to the support plate (315) and remain relatively stationary with respect to the support plate (315).

6. The fiber seal spraying and paving equipment according to claim 5, characterized in that, The horizontal adjusting rod (313) is provided with a sliding groove (321), which extends along the first horizontal direction. The sliding groove (321) engages with one end of the support plate (315), so that the support plate (315) can be displaced along the extension direction of the sliding groove (321), so that the nozzle (302) moves closer to or further away from the screw feeder (2).

7. The fiber seal spraying and paving equipment according to claim 6, characterized in that, The spiral feeder (2), the nozzle (302), and the guide (4) are distributed sequentially along the first horizontal direction. The guide (4) has a limiting member (8). One end of the limiting member (8) is relatively stationary with the guide (4), and the other end of the limiting member (8) is inserted into the support plate (315). The limiting member (8) is used to keep the guide (4) and the support plate (315) at a preset distance in the first horizontal direction.

8. The fiber seal spraying and paving equipment according to claim 5, characterized in that, Multiple nozzles (302) are movably connected to the support plate (315), and the nozzles (302) are rotatable about their own axis.

9. A fiber seal spraying and paving device according to claim 6, characterized in that, The guide member (4) is located between the nozzle (302) and the spiral feeder (2).

10. A fiber seal spraying and paving device according to claim 5, characterized in that, The rotary drive mechanism (312) is an electric motor.

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