Asphalt mixture paver and asphalt mixture paving system

Abstract

The utility model discloses an asphalt mixture paver and an asphalt mixture paving system. The asphalt mixture paver comprises a vehicle body and a paving mechanism, the vehicle body is provided with a cab and an asphalt mixture storage box, and the paving mechanism comprises a first spatula, a second spatula and a compression roller which are sequentially arranged in the moving direction of the vehicle body; the first spatula is an inclined spatula or a step-shaped spatula; the second spatula is a tooth-shaped spatula or a wave-shaped spatula; the bottom height of the first spatula > the bottom height of the second spatula > the bottom height of the compression roller; the paving mechanism further comprises a supporting plate for fixing the first spatula, the second spatula and the pressing roller, and the supporting plate is connected with the vehicle body. The asphalt mixture paver disclosed by the utility model is very reasonable in structure and configuration, and can effectively improve the paving quality and efficiency of an asphalt pavement.

Description

Technical Field

[0001] The utility model relates to the technical field of asphalt mixture paving, in particular to an asphalt mixture paver and an asphalt mixture paving system. Background Art

[0002] At present, the main process of laying asphalt mixture is as follows:

[0003] Material preparation: Asphalt mixture is made by hot mixing coarse aggregate, fine aggregate, fine filler, asphalt and various additives.

[0004] Equipment preheating: Preheating of paving equipment such as pavers, rollers, etc.

[0005] Paving preparation: Determine the paving width and thickness, and set the corresponding parameters of the paver.

[0006] Road surface cleaning: Clean the construction section to make the surface clean and dry.

[0007] Material transportation: The hot mix asphalt mixture is transported from the mixing plant to the construction site by a dump truck and fed directly to the paver using a feeder truck.

[0008] Paving operation: The paver spreads the asphalt mixture according to the designed width and thickness.

[0009] Compaction: Static rollers and vibratory rollers compact the spread asphalt layer.

[0010] Among them, the paver is the core equipment in the asphalt mixture paving process, which needs to be able to control the paving width, thickness and surface flatness. Pavers are usually divided into two categories: wheeled and crawler.

[0011] The paving mechanism of the paver is a very important key component, and its function and performance have a great influence on the quality of asphalt mixture paving. At present, the paving mechanism usually adopts a pressure roller or a spatula (or scraper), which not only has a poor paving effect, but also the spatula and pressure roller are easily damaged. Utility Model Content

[0012] The main purpose of the utility model is to provide an asphalt mixture paver and an asphalt mixture paving system to solve the technical problems in the prior art that the paving effect is not good and the spatula and the pressure roller are easily damaged.

[0013] In order to achieve the above object, according to the first aspect of the utility model, an asphalt mixture paver is provided, and the technical solution is as follows:

[0014] An asphalt mixture paver comprises a vehicle body and a paving mechanism, wherein the vehicle body has a cab and an asphalt mixture storage tank, and the paving mechanism comprises a first spatula, a second spatula and a pressure roller which are sequentially arranged along the moving direction of the vehicle body; the first spatula is a beveled spatula or a stepped spatula; the second spatula is a toothed spatula or a wavy spatula; the bottom height of the first spatula is greater than the bottom height of the second spatula and the bottom height of the pressure roller; the paving mechanism also comprises a support plate for fixing the first spatula, the second spatula and the pressure roller, and the support plate is connected to the vehicle body.

[0015] The asphalt mixture paver of the utility model has the following advantages: (1) The first trowel adopts an inclined or stepped trowel, which can better control the flow direction and distribution of the asphalt mixture, and the second trowel adopts a toothed or wavy trowel, which can optimize the leveling and compacting effect of the mixture. (2) The bottom height of the first trowel is the highest, the second trowel is the second, and the pressure roller is the lowest. This design of gradually decreasing height can better achieve the pre-compacting of the paving material; (3) The specific selection of the trowel and its height distribution with the pressure roller reduce the wear and tear of the trowel, reduce the pressure, and reduce the workload, thereby significantly extending the life of the trowel. (4) The trowel and the pressure roller are fixed on the same support plate and connected to the vehicle body, ensuring the stability and coordination of the entire paving mechanism. (5) The overall structure of the front and rear trowels, pressure rollers and other components is well coordinated, giving full play to their respective advantages, and can effectively control the key links such as the flow direction distribution, leveling and compaction of the asphalt mixture. It can be seen that the structure and configuration of the asphalt mixture paver of the utility model are very reasonable, which can effectively improve the quality and efficiency of asphalt pavement paving.

[0016] As a further improvement of the above-mentioned asphalt mixture paver: the first spatula and the support plate are detachably connected; the second spatula and the support plate are detachably connected. Therefore, spatulas of different shapes can be quickly replaced according to different engineering requirements, thereby improving the versatility and adaptability of the paver; when the spatula is worn or damaged, it can be easily replaced separately, reducing the maintenance difficulty of the entire paving mechanism and extending the overall service life of the paver; the height and other parameters of each spatula can be independently debugged and adjusted, thereby improving the accuracy of the paver debugging.

[0017] As a further improvement of the above-mentioned asphalt mixture paver: air baffles adapted to the paving surface are provided at the rear and left and right sides of the support plate, a filter adapted to the vehicle body is provided in front of the support plate, and an induced draft fan is provided on the support plate near the filter. Thus, the air baffle can prevent the splashing of asphalt mixture particles and the diffusion of smoke during the paving process, which is beneficial to protecting the workers and improving the working environment; the induced draft fan can collect the smoke generated during the paving process and improve the working environment; the filter can intercept asphalt mixture particles to prevent these particles from entering the induced draft fan and causing the induced draft fan to be blocked and malfunction.

[0018] As a further improvement of the above-mentioned asphalt mixture paver: it also includes a flue gas treatment mechanism, which includes a condensing device and an activated carbon adsorption device connected to the exhaust port of the induced draft fan in sequence, the condensing device is used to condense the tail gas and output a solid-liquid mixture, the solid-liquid mixture flows back to the asphalt mixture storage tank through a reflux pipe, and the activated carbon adsorption device is used to adsorb the non-condensable tail gas output by the condensing device. As a result, the condensing device can realize the recycling and reuse of tail gas and realize the efficient use of resources; the activated carbon adsorption device ensures that the final emission meets the standard, protects the surrounding ecological environment, and minimizes the impact on the environment.

[0019] As a further improvement of the above-mentioned asphalt mixture paver: the condensation device and the activated carbon adsorption device are arranged on the top of the cab. Thus, the space on the top of the cab is fully utilized without occupying other important areas; it is convenient for the staff to carry out daily inspection and maintenance; it is far away from the working area, reducing the risk of personnel being exposed to exhaust gas.

[0020] As a further improvement of the above-mentioned asphalt mixture paver: it also includes a lifting mechanism for controlling the lifting of the paving mechanism, the lifting mechanism includes a base arranged behind the cab, a screw rod and a vertical rod connecting the support plate and the base and arranged vertically, and a motor driving the screw rod to lift. Thus, the motor driving the screw rod to lift can achieve high-precision lifting control, so as to flexibly adjust the paving height, which is conducive to achieving accurate control of the paving quality; the core components such as the base, screw rod, and vertical rod are arranged behind the cab, and the space utilization efficiency is high.

[0021] As a further improvement of the above-mentioned asphalt mixture paving machine, it also includes a feeding mechanism, and the feeding mechanism includes a feeding port arranged at the bottom of the asphalt mixture storage tank, thereby facilitating gravity feeding and ensuring that the asphalt mixture can continuously and evenly enter the paving mechanism.

[0022] As a further improvement of the above-mentioned asphalt mixture paver: the feeding mechanism also includes a feeding roller arranged at the feeding port, and the feeding roller is provided with spiral blades or spaced blades, thereby assisting in promoting and controlling the flow direction and feeding speed of the asphalt mixture; the feeding mechanism also includes a horizontal baffle and a vertical baffle connected to the feeding port, thereby better guiding and limiting the flow direction of the asphalt mixture to avoid spilling, loss and waste.

[0023] As a further improvement of the above-mentioned asphalt mixture paver: the bottom of the asphalt mixture storage tank is provided with an inclined plate, and the discharge port is provided at the lower position of the inclined plate. Thus, the inclined plate can guide the asphalt mixture to flow naturally to the discharge port position, avoiding the accumulation of materials in the dead corner at the bottom of the storage tank, improving the overall material smoothness, and eliminating the need for manual unloading, reducing the work intensity and time cost; the discharge port is provided at the lower position of the inclined plate to ensure that the mixture in the storage tank is completely discharged, avoiding waste and quality problems caused by residual materials.

[0024] In order to achieve the above object, according to the second aspect of the utility model, an asphalt mixture paving system is provided, and the technical solution is as follows:

[0025] An asphalt mixture paving system comprises the asphalt mixture paver described in the first aspect above.

[0026] It can be seen that the asphalt mixture paver and asphalt mixture paving system of the utility model have a simple structure, are easy to use, and have a prolonged service life of the paving mechanism, can significantly improve the paving quality and efficiency, and effectively solve the technical problems in the prior art of poor paving effect and easy damage to the trowel and roller, and have good practicality.

[0027] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. Additional aspects and advantages of the present invention will be partially given in the following description, partially become apparent from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings constituting a part of the present invention are used to assist the understanding of the present invention. The contents provided in the drawings and their related descriptions in the present invention can be used to explain the present invention, but do not constitute an improper limitation on the present invention.

[0029] In the attached picture:

[0030] Figure 1 This is a schematic structural diagram of an asphalt mixture paver according to Example 1 of the utility model.

[0031] Figure 2 This is a schematic structural diagram of the second trowel in the asphalt mixture paver of Example 1 of the utility model.

[0032] Figure 3 This is a schematic diagram of the structure of the first trowel in the asphalt mixture paver of Example 2 of the utility model.

[0033] Figure 4 This is a schematic diagram of the structure of the second trowel in the asphalt mixture paver of Example 2 of the utility model.

[0034] The relevant marks in the above drawings are:

[0035] 110-cab, 120-asphalt mixture storage tank, 210-first trowel, 220-second trowel, 230-pressing roller, 240-support plate, 310-air baffle, 320-filter, 330-induced draft fan, 410-condensing device, 420-activated carbon adsorption device, 510-support platform, 520-screw rod, 530-vertical rod, 540-motor, 610-transfer roller, 620-horizontal baffle, 630-vertical baffle, 640-inclined plate. DETAILED DESCRIPTION

[0036] The utility model is described clearly and completely below in conjunction with the accompanying drawings. A person skilled in the art will be able to implement the utility model based on these descriptions. Before describing the utility model in conjunction with the accompanying drawings, it should be particularly noted that:

[0037] The technical solutions and technical features provided in each part of the utility model, including the following description, can be combined with each other if there is no conflict.

[0038] In addition, the embodiments of the present invention involved in the following description are generally only a part of the embodiments of the present invention, rather than all of the embodiments. Therefore, based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0039] About the terms and units in the present invention: The terms "include", "have" and any variations thereof in the specification and claims of the present invention and related parts are intended to cover non-exclusive inclusions.

[0040] Example 1

[0041] Figure 1 It is a schematic structural diagram of the asphalt mixture paver of this embodiment. Figure 2 It is a schematic diagram of the structure of the second trowel in the asphalt mixture paver of this embodiment.

[0042] like Figure 1-2 As shown, the asphalt mixture paver includes a vehicle body, a paving mechanism, a smoke treatment mechanism, a lifting mechanism and a feeding mechanism; the vehicle body has a cab 110 and an asphalt mixture storage tank 120.

[0043] The paving mechanism includes a first spatula 210, a second spatula 220 and a pressure roller 230 arranged in sequence along the moving direction of the vehicle body; the first spatula 210 is a bevel spatula; the second spatula 220 is a toothed spatula; the bottom height of the first spatula 210> the bottom height of the second spatula 220> the bottom height of the pressure roller 230; the paving mechanism also includes a support plate 240 for fixing the first spatula 210, the second spatula 220 and the pressure roller 230, and the support plate 240 is connected to the vehicle body; the first spatula 210 and the support plate 240 are detachably connected; the second spatula 220 and the support plate 240 are detachably connected. An air baffle 310 adapted to the paving surface is provided at the rear and left and right sides of the support plate 240, a filter screen 320 adapted to the vehicle body is provided in front of the support plate 240, and an induced draft fan 330 is provided on the support plate 240 adjacent to the filter screen 320.

[0044] The smoke treatment mechanism is used to treat the smoke generated by the heating of the asphalt mixture during the paving process; the smoke treatment mechanism includes a condensing device 410 and an activated carbon adsorption device 420 which are connected to the air outlet of the induced draft fan 330 in sequence, the condensing device 410 is used to condense the exhaust gas and output a solid-liquid mixture, and the solid-liquid mixture refluxes to the asphalt mixture storage tank 120 through a reflux pipe, and the activated carbon adsorption device 420 is used to adsorb the non-condensable exhaust gas output by the condensing device 410; the condensing device 410 and the activated carbon adsorption device 420 are arranged on the top of the cab 110.

[0045] The lifting mechanism is used to control the lifting of the paving mechanism; the lifting mechanism includes a base 510 arranged behind the cab 110, a screw rod 520 and a vertical rod 530 connecting the support plate 240 and the base 510 and arranged vertically, and a motor 540 for driving the screw rod 520 to lift and lower.

[0046] The unloading mechanism includes a unloading port at the bottom of the asphalt mixture storage tank 120 and a transfer roller 610 at the unloading port, wherein the transfer roller 610 is provided with spiral blades or spaced-apart paddles; the unloading mechanism also includes a horizontal baffle 620 and a vertical baffle 630 connected to the unloading port.

[0047] An inclined plate 640 is disposed at the bottom of the asphalt mixture storage tank 120 , and the discharge port is disposed at a lower position of the inclined plate 640 .

[0048] Example 2

[0049] Figure 3 Schematic diagram of the structure of the first trowel 210 in the asphalt mixture paver of this embodiment. Figure 4 Schematic diagram of the structure of the second trowel 220 in the asphalt mixture paver of this embodiment.

[0050] Compared with the first embodiment, the asphalt mixture paver of the present embodiment has the following differences: Figure 3-4 As shown, the first spatula 210 is a stepped spatula; the second spatula 220 is a wavy spatula.

[0051] An embodiment of the asphalt mixture paving system of the utility model includes an asphalt mixture paver according to any one of the above embodiments. In addition, it may also include ancillary equipment such as a roller, a feeder, a cutting machine, a material receiving machine, a heating device, and a spraying device.

[0052] The asphalt mixture is a composite material composed of aggregate, asphalt and some additives; the aggregate includes coarse aggregate, fine aggregate and fine filler; the additives are modifiers, anti-aging agents and other materials, such as added fiber and fly ash.

[0053] The particle size of the coarse aggregate is preferably ≥10mm and ≤25mm, so as to provide a skeleton structure and increase the compressive strength and stability of the asphalt mixture. The particle size of the fine aggregate is preferably ≥2.36 and <10mm, so as to fill the gaps between the coarse aggregates and increase the density and overall strength of the asphalt mixture. The particle size of the fine filler is preferably <2.36mm, so as to fill the gaps between the fine aggregates and further increase the density and overall strength of the asphalt mixture.

[0054] The above is an explanation of the relevant contents of the utility model. A person skilled in the art will be able to implement the utility model based on these explanations. Based on the above contents of the utility model, all other embodiments obtained by a person skilled in the art without creative work shall fall within the scope of protection of the utility model.

Claims

1. An asphalt mixture paver, comprising a vehicle body and a paving mechanism, wherein the vehicle body has a cab (110) and an asphalt mixture storage tank (120), characterized in that: The paving mechanism comprises a first spatula (210), a second spatula (220) and a pressure roller (230) which are arranged in sequence along the moving direction of the vehicle body; the first spatula (210) is a beveled spatula or a stepped spatula; the second spatula (220) is a toothed spatula or a wavy spatula; the bottom height of the first spatula (210) is greater than the bottom height of the second spatula (220) and greater than the bottom height of the pressure roller (230); The paving mechanism further comprises a support plate (240) for fixing the first spatula (210), the second spatula (220) and the pressure roller (230), and the support plate (240) is connected to the vehicle body.

2. The asphalt mixture paver according to claim 1, characterized in that: The first spatula (210) and the support plate (240) are detachably connected; the second spatula (220) and the support plate (240) are detachably connected.

3. The asphalt mixture paver according to claim 1, characterized in that: An air baffle (310) adapted to the paving surface is provided at the rear and left and right sides of the support plate (240), a filter screen (320) adapted to the vehicle body is provided in front of the support plate (240), and an induced draft fan (330) is provided on the support plate (240) adjacent to the filter screen (320).

4. The asphalt mixture paver according to claim 3, characterized in that: It also includes a flue gas treatment mechanism, which includes a condensing device (410) and an activated carbon adsorption device (420) which are sequentially connected to the exhaust port of the induced draft fan (330), the condensing device (410) being used to condense the exhaust gas and output a solid-liquid mixture, the solid-liquid mixture being refluxed into the asphalt mixture storage tank (120) through a reflux pipe, and the activated carbon adsorption device (420) being used to adsorb the non-condensable exhaust gas output by the condensing device (410).

5. The asphalt mixture paver according to claim 4, characterized in that: The condensation device (410) and the activated carbon adsorption device (420) are arranged on the top of the cab (110).

6. The asphalt mixture paver according to claim 1, characterized in that: The invention also comprises a lifting mechanism for controlling the lifting of the paving mechanism, wherein the lifting mechanism comprises a support platform (510) arranged behind the cab (110), a screw rod (520) and a vertical rod (530) connecting the support plate (240) and the support platform (510) and arranged vertically, and a motor (540) for driving the screw rod (520) to lift and lower.

7. The asphalt mixture paver according to claim 1, characterized in that: It also comprises a material discharge mechanism, wherein the material discharge mechanism comprises a material discharge port arranged at the bottom of the asphalt mixture storage tank (120).

8. The asphalt mixture paver according to claim 7, characterized in that: The material discharging mechanism further comprises a material transfer roller (610) arranged at the material discharging port, and the material transfer roller (610) is provided with spiral blades or spaced-apart paddle blades; the material discharging mechanism further comprises a horizontal baffle (620) and a vertical baffle (630) connected to the material discharging port.

9. The asphalt mixture paver according to claim 7, characterized in that: The bottom of the asphalt mixture storage tank (120) is provided with an inclined plate (640), and the discharge port is arranged at a low position of the inclined plate (640).

10. Asphalt mixture paving system, characterized by: An asphalt mixture paver comprising the asphalt mixture paver according to any one of claims 1-9.

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