Paving equipment

Abstract

The invention discloses paving equipment. The paving equipment comprises a rack, the walking structure is arranged at the lower part of the rack and is used for driving the rack to move; the paving assembly is arranged on the rack; the paving assembly comprises a stirring and distributing structure, and the stirring and distributing structure is provided with a first discharge port and a third discharge port which are used for paving a polyurethane mixture, and a second discharge port used for discharging glass fibers; wherein the first discharge port, the second discharge port and the third discharge port are arranged at intervals front and back in the advancing direction of the rack, so that when the paving equipment advances, glass fibers scattered from the second discharge port fall on a bottom polyurethane mixture paving layer paved from the first discharge port; and the glass fiber is covered by an upper polyurethane mixture paving layer which is paved from the third discharge hole, so that the glass fiber is mixed between the two polyurethane mixture paving layers. Compared with the prior art, polyurethane mixture paving and glass fiber blending can be completed at a time.

Description

Technical Field

[0001] This invention relates to the field of road engineering technology, and more specifically to a paving device. Background Technology

[0002] New modified polyurethane mixtures require the simultaneous incorporation of glass fibers during paving to enhance interlayer tensile strength, and the immediate application of small aggregates after paving to form an abrasive layer. Due to the extremely rapid setting speed of modified polyurethane, each construction process must be quickly integrated. Traditional pavers lack integrated fiber addition mechanisms and simultaneous surface sand spreading systems, failing to meet these specific process requirements. Currently, polyurethane mixture paving operations mainly rely on traditional asphalt pavers combined with manual assistance or some modified equipment, resulting in poor coordination, low efficiency, and high labor costs.

[0003] Chinese utility model patent application number 202120880627.6 discloses a synchronous vehicle-mounted spreading-paving integrated device, including an asphalt tank, a fiber bin, and a crushed stone bin mounted on a mobile platform. The bottom of the mobile platform is provided with a first nozzle connected to the asphalt tank and a second nozzle connected to the fiber bin. The rear of the mobile platform is also provided with a discharge pipe connected to the crushed stone bin. It can simultaneously spread asphalt binder, glass fiber, and crushed stone surface sand on the base layer of newly built roads.

[0004] While this patent is based on asphalt paving, it can also be applied to the paving of polyurethane mixtures to some extent. However, it still has two significant shortcomings: First, the glass fiber is spread on top of the paving layer, rather than being internally blended as required by polyurethane mixtures; second, the device does not integrate a vibratory leveling structure, requiring other equipment for leveling after spreading. Given the rapid solidification of modified polyurethane mixtures, ideal paving equipment should be able to complete paving and vibratory leveling operations simultaneously. Furthermore, the optimal vibratory leveling should be performed after paving and incorporating glass fiber, but before spreading the topsand, the device disclosed in this patent, even with subsequent vibratory leveling using other equipment, cannot meet this stringent process timing requirement. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to propose a paving equipment that integrates polyurethane mixture paving and vibration leveling with simultaneous mixing of glass fiber, in response to the above-mentioned technical status.

[0006] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: A paving device, including frame; A walking structure is provided at the lower part of the frame for driving the frame to move; A paving assembly is mounted on the frame; The paving assembly is characterized in that it includes a mixing fabric structure; the mixing fabric structure is provided with a first outlet and a third outlet for paving polyurethane mixture, and a second outlet for discharging glass fiber. The first, second, and third discharge ports are arranged at intervals along the traveling direction of the frame, such that when the paving equipment is traveling, the glass fiber spread from the second discharge port falls onto the bottom layer of polyurethane mixture laid from the first discharge port and is subsequently covered by the upper layer of polyurethane mixture laid from the third discharge port, thereby incorporating the glass fiber between the two layers of polyurethane mixture.

[0007] Compared with existing technologies, the polyurethane mixture of this invention is discharged from the first outlet, forming a bottom layer of polyurethane mixture in the direction of travel. Glass fibers are then discharged from the second outlet, evenly spread on the freshly laid bottom layer of polyurethane mixture. Next, the polyurethane mixture is discharged from the third outlet, covering the glass fibers and embedding them between the two layers of polyurethane mixture, achieving simultaneous blending of the glass fibers. This invention, through integrated continuous operation, completes the polyurethane mixture laying and glass fiber blending in one step, fundamentally avoiding the problems of poor coordination and integration in traditional multi-equipment, step-by-step construction. This significantly improves construction efficiency and interlayer bonding quality, ensuring timely and uniform embedding of glass fibers into the polyurethane mixture.

[0008] To enable simultaneous spreading of the surface sand and to place the leveling process after paving and incorporating glass fiber and before spreading the surface sand, the paving equipment further includes a leveling structure located behind the mixing and spreading structure for leveling the paved polyurethane mixture; and a spreading structure located behind the leveling structure, which has a fourth discharge port for spreading the surface sand.

[0009] To improve the uniformity of polyurethane mixture distribution, preferably, the mixing and feeding structure includes a mixing tank for containing the polyurethane mixture, and a first spiral distributing device for mixing the polyurethane mixture is provided inside the mixing tank; the first discharge port and the third discharge port are spaced apart at the bottom of the mixing tank along the travel direction.

[0010] To maintain the dryness and dispersion of the fibers throughout the conveying and dispensing process, preferably, the mixing fabric structure further includes a glass fiber hopper independently disposed within the mixing tank, the glass fiber hopper being isolated from the polyurethane mixture containing space within the mixing tank; the glass fiber hopper is connected to a feed pipe for inputting glass fibers, the feed pipe passing through the mixing tank, and the second discharge port being located at the bottom of the glass fiber hopper.

[0011] To ensure that the glass fibers fall evenly, preferably, the glass fiber hopper is equipped with a stirring device for stirring the glass fibers.

[0012] Preferably, the spreading structure includes a sand hopper for containing sand, and a second spiral distributing device for stirring the sand is provided inside the sand hopper; the fourth discharge port is located at the bottom of the sand hopper.

[0013] To control the amount of surface sand spread, preferably, an adjustable material gate is provided at the fourth discharge port, and the material gate is connected to an adjusting cylinder that drives its opening and closing.

[0014] To limit the travel of the material gate, preferably, the material gate is located at the free end of a swing arm, the piston rod of the adjusting cylinder is connected to the swing arm in a transmission manner, and the hinged end of the swing arm is connected to the cylinder body of the adjusting cylinder via a pull rod.

[0015] Preferably, the fourth discharge port is provided with a spreading roller for evenly spreading the surface sand.

[0016] To facilitate adjustment of the paving thickness, preferably, the mixing and spreading structure and the vibratory leveling structure are connected together to a lifting arm, which is rotatably hinged to the frame to drive the mixing and spreading structure and the vibratory leveling structure to be raised or lowered as a whole. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the paving component according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the paving component in working state according to an embodiment of the present invention; Figure 4 for Figure 3 Enlarged diagram of point A in the middle. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0019] like Figures 1 to 4 The image shows a preferred embodiment of a paving device according to the present invention.

[0020] This embodiment includes a frame 1, a traveling structure 2, a material feeding and conveying system, a power unit, a control unit, and a paving component 3.

[0021] The frame 1 serves as the basic support frame for the entire paving equipment. The traveling structure 2 is installed at the bottom of the frame 1 and is used to drive the entire paving equipment to move, providing the power for paving operations.

[0022] The feeding and conveying system is installed on the frame 1 and consists of a feeding module and a conveying module. The feeding module includes a polyurethane mixture hopper 41 and a surface sand hopper 42 located at the front of the frame 1, which are used to store the modified polyurethane mixture and surface sand, respectively. The conveying module includes a first conveyor belt 43 and a second conveyor belt 44, which continuously convey the polyurethane mixture and surface sand to the paving assembly 3 at the rear.

[0023] The power unit, including an oil tank 51 and an engine 52, is located at the front of the frame 1 and is used to provide power to the equipment.

[0024] The control unit includes a control cabinet 61 and an operating console 62, which are located at the rear of the frame 1 and are used to monitor and adjust the operation of the equipment.

[0025] The paving component 3 is located at the rear of the frame 1 and is the core device for realizing the paving and leveling of polyurethane mixture, simultaneous mixing of glass fiber and simultaneous spreading of surface sand. It includes a mixing and spreading structure 31, a leveling structure 32 and a spreading structure 33.

[0026] The mixing and spreading structure 31 is mainly used for the temporary storage, mixing and spreading of polyurethane mixture, and to achieve synchronous blending of glass fiber. The mixing and spreading structure 31 includes a mixing tank 311, which contains a first spiral distributing device 312 for mixing and uniformly distributing the polyurethane mixture.

[0027] The bottom of the mixing tank 311 is provided with a first discharge port 313 and a third discharge port 314 spaced apart along the direction of travel, which are used for spreading the bottom layer and the top layer of polyurethane mixture, respectively.

[0028] A separate glass fiber hopper 315 is also provided inside the mixing hopper 311, which is isolated from the polyurethane mixture containing space. The glass fiber hopper 315 is connected to a feed pipe 316 for feeding glass fiber from the outside, and is equipped with a dispersing device 317 inside to disperse the fed glass fiber.

[0029] The bottom of the glass fiber hopper 315 is provided with a second discharge port 318, located between the first discharge port 313 and the third discharge port 314, which is used to evenly spread glass fiber between the two layers of polyurethane mixture to achieve the mixing of glass fiber.

[0030] The vibratory leveling structure 32 is located behind the mixing and spreading structure 31 and includes a vibratory motor 321 and a vibratory plate 322. The vibratory motor 321 drives the vibratory plate 322 to scrape, compact, and level the spread polyurethane mixture, ensuring a dense and flat layer. A rubber support 323 is installed above the vibratory leveling structure 32 to reduce vibration transmission to the operating table 62 and avoid affecting user operation.

[0031] The spreading structure 33 is located behind the vibrating and leveling structure 32 and is used for the temporary storage, mixing, and spreading of the sand. The spreading structure 33 includes a sand hopper 331, which contains a second spiral distributing device 332 for mixing and ensuring the sand falls evenly. A fourth discharge port 333 is provided at the bottom of the sand hopper 331, and a spreading roller 334 is provided at the outlet to ensure the sand is evenly spread.

[0032] To precisely control the amount of surface sand spread, an adjustable material gate 335 is installed at the fourth discharge port 333. This material gate 335 is driven by a linkage mechanism consisting of a swing arm 336, a pull rod 337, and an adjusting cylinder 338. The material gate 335 itself is located at the free end of the swing arm 336, and the hinged end of the swing arm 336 is connected to the cylinder body of the adjusting cylinder 338 via the pull rod 337. Simultaneously, the piston rod of the adjusting cylinder 338 is drive-connected to the swing arm 336. By driving the adjusting cylinder 338, the swing arm 336 can rotate around its hinge point, thereby controlling the opening or closing of the material gate 335 fixed at its free end, achieving precise adjustment of the discharge port opening size.

[0033] To accommodate different paving thicknesses, the mixing and spreading structure 31 and the vibratory leveling structure 32 are connected to a lifting boom 34, which is hinged to the frame 1. The mixing and spreading structure 31 and the vibratory leveling structure 32 can be raised or lowered as a whole by rotation.

[0034] This embodiment utilizes integrated continuous operation to complete multiple processes in one go, including polyurethane mixture paving, glass fiber blending, and surface sand spreading. The specific workflow is as follows: The polyurethane mixture and the surface sand are supplied by the polyurethane mixture hopper 41 and the surface sand hopper 42, respectively, and are continuously transported to the mixing tank 311 and the surface sand tank 331 of the rear paving component 3 via the first conveyor belt 43 and the second conveyor belt 44; the glass fiber is continuously fed into the glass fiber tank 315 from the feed pipe 316.

[0035] like Figure 4 As shown, the polyurethane mixture enters the mixing box 311 of the mixing cloth structure 31, and after being mixed and distributed by the first spiral distributor 312, it is discharged from the first outlet 313 at the bottom, forming the bottom layer of polyurethane mixture a in the direction of travel.

[0036] Next, the mixing device 317 keeps the glass fiber b in a dispersed state, and the glass fiber b is discharged from the second discharge port 318 at the bottom of the glass fiber box 315 and evenly spread on the newly laid bottom polyurethane mixture layer a.

[0037] Following the direction of travel, the polyurethane mixture in the mixing tank 311 is discharged from the third outlet 314, covering the glass fiber b to form an upper polyurethane mixture layer c, so that the glass fiber b is embedded between the two polyurethane mixture layers, achieving synchronous mixing of the glass fiber.

[0038] After the composite layer is laid, it is then placed under the vibratory leveling structure 32. The vibratory plate 322 is driven by the vibration motor 321 to level and compact the layer, thereby improving its density and surface smoothness.

[0039] Following the leveling process, the surface sand in the surface sand box 331 of the spreading structure 33 is evenly distributed by the second spiral distributor 332 and falls through the fourth outlet 333, where it is evenly spread onto the surface of the still-uncured polyurethane mixture by the spreading roller 334. By adjusting the opening of the material gate 335 driven by the cylinder 338, the amount of surface sand spread can be controlled in real time to ensure that the surface sand is embedded into the adhesive layer in a timely and even manner.

[0040] The entire process is completed continuously in a single pass of the paving equipment. Each material layer is tightly bonded before the polyurethane mixture initially sets, and the surface sand is embedded in the surface to form a wear-resistant layer, thereby achieving reliable interlayer bonding and integrated surface function in the pavement structure.

Claims

1. A paving device, comprising Rack (1); A walking structure (2) is provided at the lower part of the frame (1) for driving the frame (1) to move; A paving assembly (3) is mounted on the frame (1); Its features are, The paving assembly (3) includes a mixing fabric structure (31); the mixing fabric structure (31) is provided with a first outlet (313) and a third outlet (314) for paving polyurethane mixture, and a second outlet (318) for discharging glass fiber. The first discharge port (313), the second discharge port (318), and the third discharge port (314) are arranged at intervals along the traveling direction of the frame (1), such that when the paving equipment is traveling, the glass fiber spread from the second discharge port (318) falls on the bottom layer of polyurethane mixture laid from the first discharge port (313) and is subsequently covered by the upper layer of polyurethane mixture laid from the third discharge port (314), thereby incorporating the glass fiber into the space between the two layers of polyurethane mixture.

2. The paving equipment according to claim 1, characterized in that, Also includes A leveling structure (32) is located behind the mixing and spreading structure (31) for leveling the polyurethane mixture. The spreading structure (33) is located behind the vibrating and leveling structure (32) and has a fourth discharge port (333) for spreading the surface sand.

3. The paving equipment according to claim 1, characterized in that, The mixing fabric structure (31) includes a mixing tank (311) for containing polyurethane mixture, and a first spiral distributing device (312) for mixing polyurethane mixture is provided inside the mixing tank (311); the first discharge port (313) and the third discharge port (314) are opened at intervals along the travel direction at the bottom of the mixing tank (311).

4. The paving equipment according to claim 3, characterized in that, The mixing fabric structure (31) also includes a glass fiber hopper (315) independently disposed in the mixing hopper (311). The glass fiber hopper (315) is isolated from the polyurethane mixture containing space in the mixing hopper (311). The glass fiber hopper (315) is connected to a feed pipe (316) for inputting glass fiber. The feed pipe (316) passes through the mixing hopper (311). The second discharge port (318) is located at the bottom of the glass fiber hopper (315).

5. The paving equipment according to claim 4, characterized in that, The glass fiber hopper (315) is equipped with a stirring device (317) for stirring glass fibers.

6. The paving equipment according to claim 2, characterized in that, The spreading structure (33) includes a sand hopper (331) for containing sand, and a second spiral distributing device (332) for stirring sand is provided inside the sand hopper (331); the fourth discharge port (333) is opened at the bottom of the sand hopper (331).

7. The paving equipment according to claim 6, characterized in that, An adjustable material gate (335) is provided at the fourth discharge port (333), and the material gate (335) is connected to an adjusting cylinder (338) that drives it to open and close.

8. The paving equipment according to claim 7, characterized in that, The material gate (335) is located at the free end of a swing arm (336). The piston rod of the regulating cylinder (338) is connected to the swing arm (336) in a transmission manner. The hinge end of the swing arm (336) is connected to the cylinder body of the regulating cylinder (338) through a pull rod (337).

9. The paving equipment according to claim 6, characterized in that, The fourth discharge port (333) is equipped with a spreading roller (334) for evenly spreading the surface sand.

10. The paving equipment according to claim 2, characterized in that, The mixing fabric structure (31) and the vibrating and leveling structure (32) are connected together to a lifting arm (34), which is rotatably hinged to the frame (1) to drive the mixing fabric structure (31) and the vibrating and leveling structure (32) to be raised or lowered as a whole.

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