A pre-spraying device for a fiber wearing course construction vehicle

Abstract

The utility model provides a kind of pre-spraying device of fiber wearing layer construction car, comprising: outer frame, several asphalt sprayers are fixedly connected on outer frame, the lowermost of asphalt sprayer is equipped with the limiting mechanism fixed on outer frame, limiting mechanism is used to guide fiber and to carry out recovery to asphalt and soak fiber;When pre-spraying fiber wearing layer, untwisted roving type glass fiber of fiber wearing layer is uniformly distributed by limiting mechanism limiting guidance, so that untwisted roving type glass fiber is pre-sprayed by asphalt sprayer, while limiting mechanism is used to recover asphalt, and the untwisted roving type glass fiber is soaked by recovered asphalt, so that the center of untwisted roving type glass fiber can also be soaked by asphalt, so that the overall structural strength is improved.

Description

Technical Field

[0001] This utility model relates to the field of ultra-thin wear-resistant layer paving technology, and in particular to a pre-spraying device for a fiber wear-resistant layer construction vehicle. Background Technology

[0002] In the field of road engineering, fiber-reinforced wear-resistant course is widely used as a high-performance preventive maintenance technology for pavements due to its excellent crack resistance, wear resistance, and waterproofing properties. The key to this technology is to uniformly spread and embed glass fibers while spraying asphalt binder, forming a high-strength composite structural layer.

[0003] Currently, the common technique used in the construction of fiber wearing courses is to first spray a layer of asphalt onto the road surface using asphalt spraying equipment, then loosely spread untwisted roving glass fibers onto the asphalt film using fiber spreading equipment, and finally cover with another layer of asphalt and spread aggregate. However, this traditional step-by-step process of "spraying oil first, then spreading fibers" has several inherent defects: untwisted roving glass fibers are composed of hundreds or even thousands of monofilaments bundled together, with a dense structure. The traditional spreading method means that the fiber bundles simply fall onto the asphalt surface, and the asphalt slowly penetrates from the outside in mainly through capillary action and surface tension. This easily leads to the monofilaments in the central area of ​​the fiber bundle not being fully wetted and wrapped by the asphalt, resulting in a "dry core" phenomenon. The strength potential of the insufficiently wetted fiber bundles cannot be fully realized within the layer, and may become weak points in the interlayer bonding, affecting the overall structural strength and long-term durability of the fiber wearing course. Therefore, a pre-spraying device for fiber wearing course construction vehicles is proposed. Utility Model Content

[0004] To address at least one of the aforementioned technical shortcomings, this utility model provides a pre-spraying device for a fiber wear layer construction vehicle, comprising: an outer frame, on which a plurality of asphalt nozzles are fixedly connected, and at the bottom of the asphalt nozzles, a limiting mechanism fixed to the outer frame is provided, the limiting mechanism being used to guide the fibers and to recycle the asphalt and soak the fibers.

[0005] Furthermore, the limiting mechanism includes a U-shaped frame fixedly connected to the outer frame. A guide wheel is rotatably connected to the bottom of the U-shaped frame. The guide wheel and the U-shaped frame form a fixed pulley structure. A receiving block is located at the bottom of the guide wheel. Springs are fixedly connected to the lower surfaces of both ends of the receiving block. The bottom ends of the springs are fixedly connected to the outer frame. The middle of the upper surface of the receiving block is recessed, and a fiber groove is formed on the upper surface of the receiving block. The guide wheel is located inside the fiber groove.

[0006] Furthermore, the edges of the fiber groove and the guide wheel 32 are both rounded.

[0007] Furthermore, both ends of the outer frame are fixedly connected to fixing plates, and the fixing plates are provided with through holes for through bolts.

[0008] Furthermore, the asphalt nozzle is located next to the guide wheel and above the fiber channel.

[0009] Furthermore, the inner wall of the fiber channel is provided with a smooth layer. Beneficial effects

[0010] During the pre-spraying of the fiber wear layer, the untwisted roving glass fibers of the fiber wear layer are evenly distributed by the limiting mechanism, so that the untwisted roving glass fibers are pre-sprayed through the asphalt nozzle. At the same time, the asphalt is recovered by the limiting mechanism, and the recovered asphalt is used to soak the untwisted roving glass fibers, so that the fibers located at the center of the untwisted roving glass fibers can also be soaked in asphalt, thereby improving the overall structural strength.

[0011] When the limiting mechanism guides the untwisted roving glass fiber, it causes the untwisted roving glass fiber to be stuck between the guide wheel and the fiber passage groove. The guide wheel presses down on the untwisted roving glass fiber, while the asphalt nozzle sprays asphalt onto the untwisted roving glass fiber. Excess asphalt is collected through the fiber passage groove and flows into the concave area in the middle of the fiber passage groove. When the untwisted roving glass fiber passes through the concave area, it is soaked.

[0012] The purpose, features, and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Attached Figure Description

[0013] Figure 1 This is an isometric view of the entire utility model.

[0014] Figure 2 This is an isometric drawing of the limiting mechanism of this utility model.

[0015] Figure 3 This is a cross-sectional view of the limiting mechanism of this utility model.

[0016] exist Figures 1 to 3 The correspondence between the component names or lines and the attached drawing numbers is as follows: outer frame 1, fixing plate 11, asphalt nozzle 2, limiting mechanism 3, U-shaped frame 31, guide wheel 32, receiving block 33, fiber channel 331, spring 34. Detailed Implementation

[0017] Combined with appendix Figures 1 to 3 A pre-spraying device for a fiber wear layer construction vehicle includes: an outer frame 1, on which a plurality of asphalt nozzles 2 are fixedly connected, and at the bottom of the asphalt nozzles 2 is a limiting mechanism 3 fixed to the outer frame 1. The limiting mechanism 3 is used to guide the fiber and to recycle the asphalt and soak the fiber.

[0018] In specific implementation, when pre-spraying the fiber wear layer, the untwisted roving glass fibers of the fiber wear layer are evenly distributed by the limiting mechanism 3, so that the untwisted roving glass fibers are pre-sprayed through the asphalt nozzle 2. At the same time, the asphalt is recovered by the limiting mechanism 3, and the recovered asphalt is used to soak the untwisted roving glass fibers, so that the center of the untwisted roving glass fibers can also be soaked by the asphalt, thereby improving the overall structural strength.

[0019] Furthermore, the limiting mechanism 3 includes a U-shaped frame 31 fixedly connected to the outer frame 1. A guide wheel 32 is rotatably connected to the bottom of the U-shaped frame 31. The guide wheel 32 and the U-shaped frame 31 form a fixed pulley structure. A receiving block 33 is located at the bottom of the guide wheel 32. Springs 34 are fixedly connected to the lower surfaces of both ends of the receiving block 33. The bottom ends of the springs 34 are fixedly connected to the outer frame 1. The middle part of the upper surface of the receiving block 33 is recessed, and a fiber groove 331 is opened on the upper surface of the receiving block 33. The guide wheel 32 is located inside the fiber groove 331.

[0020] In specific implementation, when the limiting mechanism 3 guides the untwisted roving glass fiber, it causes the untwisted roving glass fiber to be stuck between the guide wheel 32 and the fiber passage groove 331. The guide wheel 32 presses down on the untwisted roving glass fiber, while the asphalt nozzle 2 sprays asphalt onto the untwisted roving glass fiber. Excess asphalt is collected through the fiber passage groove 331 and flows into the concave area in the middle of the fiber passage groove 331. When the untwisted roving glass fiber passes through the concave area, it is soaked.

[0021] With the spring 34 in place, when it is necessary to put untwisted roving glass fiber between the fiber channel 331 and the guide wheel 32, the receiving block 33 is pressed down, causing the spring 34 to press down and briefly separating the fiber channel 331 and the guide wheel 32. At this time, the untwisted roving glass fiber is put in, and the receiving block 33 is released. Under the elastic force of the spring 34 itself, the fiber channel 331 and the guide wheel 32 return to their original state.

[0022] Furthermore, the edges of the fiber groove 331 and the guide wheel 32 are both rounded.

[0023] In practice, rounded corners are used to reduce damage to untwisted roving glass fibers.

[0024] Furthermore, both ends of the outer frame 1 are fixedly connected to a fixing plate 11, and the fixing plate 11 is provided with a through hole for a through bolt.

[0025] In practice, the outer frame 1 is fixed to the construction vehicle as one unit by the fixing plate 11.

[0026] Furthermore, the asphalt nozzle 2 is located next to the guide wheel 32 and above the fiber groove 331.

[0027] In practice, asphalt is sprayed from the asphalt nozzle 2 to pre-spray the untwisted roving-type glass fiber.

[0028] Furthermore, the inner wall of the fiber channel 331 is provided with a smooth layer.

[0029] In practical implementation, the smooth layer allows the fiber groove 331 to better knock off the asphalt during cleaning.

Claims

1. A pre-spraying device for a fiber abrasion layer construction vehicle, characterized in that: include: The outer frame (1) is fixedly connected to several asphalt nozzles (2). At the bottom of the asphalt nozzles (2) is a limiting mechanism (3) fixed on the outer frame (1). The limiting mechanism (3) is used to guide the fiber and recycle the asphalt by soaking the fiber.

2. The pre-spraying device for the fiber abrasion layer construction vehicle according to claim 1, characterized in that: The limiting mechanism (3) includes a U-shaped frame (31) fixedly connected to the outer frame (1). A guide wheel (32) is rotatably connected to the bottom of the U-shaped frame (31). The guide wheel (32) and the U-shaped frame (31) form a fixed pulley structure. A receiving block (33) is provided at the bottom of the guide wheel (32). Springs (34) are fixedly connected to the lower surfaces of both ends of the receiving block (33). The bottom ends of the springs (34) are fixedly connected to the outer frame (1). The middle part of the upper surface of the receiving block (33) is recessed, and a fiber groove (331) is opened on the upper surface of the receiving block (33). The guide wheel (32) is located inside the fiber groove (331).

3. The pre-spraying device for the fiber abrasion layer construction vehicle according to claim 2, characterized in that: The edges of the fiber groove (331) and the guide wheel (32) are both rounded.

4. The pre-spraying device for the fiber abrasion layer construction vehicle according to claim 3, characterized in that: Both ends of the outer frame (1) are fixedly connected to a fixing plate (11), and the fixing plate (11) is provided with a through hole for a through bolt.

5. The pre-spraying device for the fiber abrasion layer construction vehicle according to claim 4, characterized in that: The asphalt nozzle (2) is located next to the guide wheel (32) and above the fiber channel (331).

6. The pre-spraying device for the fiber abrasion layer construction vehicle according to any one of claims 2 to 5, characterized in that: The inner wall of the fiber channel (331) is provided with a smooth layer.

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