Green low-carbon-based road construction asphalt paving device

Abstract

The utility model relates to bitumen paving technical field discloses a kind of road construction bitumen paving devices based on green low carbon, including tractor, the tractor front end is equipped with receiving hopper, the receiving hopper middle part is equipped with scraper conveyor belt, the scraper conveyor belt is arranged in tractor before and after, the scraper conveyor belt terminal links screw distributor, the screw distributor is installed below mounting bracket, the mounting bracket upper end is equipped with distribution heating device, distribution heating device is connected with screw distributor, the mounting bracket rear side is equipped with and ironing machine, the receiving hopper is equipped with hopper heating device, the utility model distribution heating device and hopper heating device, realize the double heating insulation of bitumen in paving process, avoid viscosity rise and aggregate segregation due to temperature reduction, to ensure paving compactness and road surface quality.

Description

Technical Field

[0001] This utility model relates to the field of asphalt paving technology, and in particular to an asphalt paving device for green and low-carbon road construction. Background Technology

[0002] Green and low-carbon road construction is based on the structural optimization of two new materials: slag binder and multifunctional asphalt pavement. Without increasing costs, it extends the design life of road structures, reduces road defects, lowers carbon emissions, and enables the utilization of solid waste from multiple sources, including industry, construction, and roads. In contrast, traditional asphalt paving construction generally suffers from high energy consumption, inaccurate asphalt temperature control, and unstable paving quality. Heating methods often result in significant heat loss, leading to substantial energy waste and an inability to effectively maintain the appropriate temperature for asphalt during paving. This can cause viscosity increases and aggregate segregation due to temperature drops, ultimately affecting paving density and road quality. Utility Model Content

[0003] The purpose of this invention is to provide a green and low-carbon asphalt paving device for road construction, which solves the problem that the asphalt cannot maintain a suitable temperature during the paving process, resulting in the asphalt temperature dropping too quickly and affecting the quality of road paving.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A green and low-carbon asphalt paving device for road construction includes a tractor unit. A receiving hopper is mounted at the front of the tractor unit, and a scraper conveyor belt is mounted in the middle of the hopper. The scraper conveyor belt is arranged at the front and rear of the tractor unit. A auger distributor is connected to the end of the scraper conveyor belt and is mounted below a mounting frame. A material distribution heating device is mounted on the upper end of the mounting frame and connected to the auger distributor. A leveling device is mounted on the rear side of the mounting frame. A hopper heating device is installed inside the receiving hopper. The auger distributor... The device includes a spiral rotor with a cavity running through it for circulating liquid heat conduction and flow. The material distribution heating device includes a rotary joint, an electric heater, a storage tank, and a circulation pump. Rotary joints are installed at both ends of the spiral rotor. One rotary joint is connected to the inlet of the electric heater via a circulation hose. The outlet of the electric heater is connected to the inlet of the storage tank. The storage tank is fixed on a mounting frame. The outlet of the storage tank is connected to the inlet of the circulation pump. The outlet of the circulation pump is connected to the other rotary joint via a circulation hose.

[0005] Preferably, the spiral distributor further includes a support base, a sprocket drive assembly, and a geared motor. The support base is fixed on both sides of the mounting frame and connected to both ends of the spiral rotor through bearing seats. One end of the sprocket drive assembly is connected to the spiral distributor, and the other end is connected to the output end of the geared motor. The geared motor is fixed on the mounting frame.

[0006] Preferably, the hopper heating device includes an electric heating tube and a connecting cable. The electric heating tube is embedded in the inner wall of the hopper and is connected to the electrical control system via the connecting cable.

[0007] Preferably, a hopper hydraulic cylinder is installed between the bottom of the receiving hopper and the tractor.

[0008] Preferably, the top of the mounting bracket is mounted to the rear of the tractor vehicle via a mounting bracket hydraulic cylinder, and the left and right sides are mounted to the tractor vehicle via traction arms.

[0009] Preferably, the mounting frame is equipped with horizontally telescopic side plate hydraulic cylinders on both the left and right sides, and a vertical side plate is fixedly installed at the outer end of the side plate hydraulic cylinder.

[0010] Preferably, temperature sensors for detecting asphalt temperature are installed inside the receiving hopper and outside the spiral distributor.

[0011] Preferably, the liquid storage tank is a double-layer insulated tank, and the circulation hose is an insulated hose.

[0012] Preferably, the circulating liquid is heat transfer oil.

[0013] This utility model has the following beneficial effects: This invention achieves dual heating and heat preservation of asphalt during the paving process by setting up a material distribution heating device and a hopper heating device. The material distribution heating device uses circulating heat transfer oil to heat the spiral distributor, ensuring that the asphalt maintains a suitable temperature during the material distribution process, avoiding viscosity increase and aggregate segregation due to temperature drop, thereby ensuring paving density and road surface quality. The hopper heating device preheats the asphalt in the hopper through an electric heating tube, further increasing the initial temperature of the asphalt and providing a good temperature foundation for the subsequent paving process. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the appearance and structure of this utility model; Figure 2 This is a schematic diagram showing the location of the material dispensing and heating device of this utility model; Figure 3 This is a schematic diagram of the structure of the spiral distributor and the distributor heating device of this utility model; Figure 4 This is a schematic diagram of the distribution of the electric heating tubes of this utility model; Icons: 1. Tractor; 2. Hopper; 201. Hopper hydraulic cylinder; 3. Scraper conveyor belt; 4. Mounting frame; 401. Mounting frame hydraulic cylinder; 402. Traction arm; 403. Side plate hydraulic cylinder; 404. Side plate; 5. Screw distributor; 501. Screw rotor; 502. Support base; 503. Sprocket drive assembly; 504. Gear motor; 6. Distributor heating device; 601. Rotary joint; 602. Electric heater; 603. Liquid storage tank; 604. Circulating pump; 7. Iron; 8. Hopper heating device; 801. Electric heating tube; 802. Connecting cable. Detailed Implementation

[0015] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] like Figure 1-4As shown in this embodiment, a green and low-carbon asphalt paving device for road construction includes a tractor 1. The tractor 1 is equipped with a cab, a power system, and an electronic control system. The electronic control system includes a PLC controller. A material receiving hopper 2 is installed at the front end of the tractor 1. A scraper conveyor belt 3 is installed in the middle of the material receiving hopper 2. The scraper conveyor belt 3 is arranged at the front and rear of the tractor 1 and is driven by a motor. The motor is electrically connected to the electronic control system to achieve precise speed control. A screw distributor 5 is connected to the end of the scraper conveyor belt 3. The spiral distributor 5 is installed below the mounting frame 4. A distribution heating device 6 is installed on the upper end of the mounting frame 4, and the distribution heating device 6 is connected to the spiral distributor 5. An ironing device 7 is installed on the rear side of the mounting frame 4. The ironing device 7 has a traditional structure and will not be described in detail here. A hopper heating device 8 is installed inside the receiving hopper 2. The hopper heating device 8 can preheat the asphalt entering the receiving hopper 2, improving the asphalt's fluidity and allowing it to be more smoothly conveyed to subsequent equipment via the scraper conveyor belt 3. The spiral distributor 5 includes... The device includes a spiral rotor 501 with a cavity inside for circulating liquid heat conduction and flow. Symmetrical spiral blades are welded to the outside of the spiral rotor 501, with the pitch gradually increasing from the middle to both ends to balance the material conveying resistance. The material distribution and heating device 6 includes a rotary joint 601, an electric heater 602, a liquid storage tank 603, and a circulating pump 604. Rotary joints 601 are installed at both ends of the spiral rotor 501. One side of the rotary joint 601 is connected to the liquid inlet of the electric heater 602 via a circulating hose. The device 602 can efficiently heat the circulating liquid. The outlet of the electric heater 602 is connected to the inlet of the liquid storage tank 603. The liquid storage tank 603 is fixed on the mounting bracket 4 and is used to store the circulating liquid. It can meet the needs of long-term construction without taking up too much space due to its large size. The outlet of the liquid storage tank 603 is connected to the inlet of the circulating pump 604. The electric heater 602 and the circulating pump 604 are electrically connected to the electrical control system. The outlet of the circulating pump 604 is connected to another rotary joint 601 through a circulating hose.

[0018] Specifically, the circulating pump 604, controlled by an electronic control system, pumps circulating liquid heated to a set temperature from the storage tank 603 into the internal cavity of the spiral rotor 501 through the fixed end of the rotary joint 601. The liquid flows along the cavity and releases heat, causing the spiral rotor 501 and the spiral distributor 5 to heat up uniformly. After heat exchange, the liquid flows out through the other end of the rotary joint 601 and returns to the storage tank 603 via the circulating hose, forming a closed loop. The circulating liquid continuously supplies heat, maintaining a stable temperature field in the spiral distributor 5 and preventing problems such as increased viscosity, aggregate segregation, and uneven paving density of asphalt caused by temperature drops. The closed loop and insulation design significantly reduce energy consumption, improving energy efficiency compared to traditional heating methods. The storage tank 603 is integrated above the mounting frame 4, shortening the pipeline and improving the thermal response speed, ensuring continuous construction capability.

[0019] The spiral distributor 5 also includes a support base 502, a sprocket drive assembly 503, and a reduction motor 504. The support base 502 is fixed to both sides of the mounting frame 4 and connected to both ends of the spiral rotor 501 through bearing seats, serving to support the spiral rotor 501 and ensure its smooth rotation. The sprocket drive assembly 503 consists of a sprocket and a chain. One end of the sprocket drive assembly 503 is fixedly connected to the spiral distributor 5, and the other end is connected to the output end of the reduction motor 504. Through sprocket drive, the reduction motor 504 is fixed to the mounting frame 4 and controlled by the electronic control system to achieve stepless speed regulation, adapting to different paving widths and asphalt flow requirements. The transmission structure is compact, has high transmission efficiency, and operates stably.

[0020] The hopper heating device 8 includes an electric heating tube 801 and a connecting cable 802. The electric heating tube 801 is embedded in the inner wall of the receiving hopper 2 and is connected to the electrical control system through the connecting cable 802 to achieve real-time temperature control. The heating tubes are evenly distributed to ensure a consistent temperature field inside the hopper, effectively preventing local cooling or adhesion and blockage of asphalt during storage and transportation. Combined with the insulation material layer, heat loss is reduced and thermal efficiency is improved.

[0021] The receiving hopper 2 is driven by the bottom hopper hydraulic cylinder 201 to rotate around the hinge joint, so that the internal asphalt flows into the scraper conveyor belt 3, realizing the automatic unloading function.

[0022] The top of the mounting frame 4 is installed to the rear of the tractor 1 via the mounting frame hydraulic cylinder 401, and the left and right sides are installed and connected to the tractor 1 via the traction arm 402, so as to realize the up and down lifting and angle adjustment of the mounting frame 4, adapt to different road slopes and paving thickness requirements, and improve paving smoothness and construction accuracy.

[0023] The mounting frame 4 is equipped with horizontally telescopic side plate hydraulic cylinders 403 on both the left and right sides. A vertical side plate 404 is fixedly installed on the outer end of the side plate hydraulic cylinder 403. The paving width can be adjusted by telescopically extending and retracting the side plate hydraulic cylinder 403 to adapt to different road construction needs.

[0024] Temperature sensors for detecting asphalt temperature are installed inside the receiving hopper 2 and outside the spiral distributor 5, and are electrically connected to the electrical control system. The PLC controller of the electrical control system processes the feedback data of the temperature sensors and adjusts the power of the electric heating tube 801 and the electric heater 602 according to the temperature deviation. The system monitors the temperature change of asphalt from the receiving hopper 2 to the paving process in real time, ensuring that it is always in the optimal construction temperature range and avoiding uneven compaction or increased energy consumption caused by temperature difference.

[0025] The liquid storage tank 603 is a double-layer insulated tank, and the circulation hose is an insulated hose to reduce heat loss of the circulating liquid.

[0026] The circulating liquid is heat transfer oil, which has good thermal stability and fluidity. It can operate at high temperatures for a long time without easily decomposing, ensuring the continuous and efficient operation of the heating system.

[0027] The working principle of this utility model is as follows: Before construction begins, the hopper heating device 8 is activated via the electrical control system. The electric heating tube 801 preheats the asphalt in the receiving hopper 2, raising the initial temperature of the asphalt. The tractor 1 moves the entire device to the construction position. After the receiving hopper 2 receives the asphalt, the hopper hydraulic cylinder 201 drives the receiving hopper 2 to rotate around the hinge point, causing the asphalt to flow into the scraper conveyor belt 3. The scraper conveyor belt 3 transports the asphalt to the screw distributor 5. At this time, the distributor heating device starts working. The electric heater 602 heats the heat transfer oil in the storage tank. The circulating pump 604 pumps the heated heat transfer oil into the internal cavity of the screw rotor 501 through the rotary joint 601. The heat transfer oil flows along the cavity, releasing heat and causing the screw distributor 5 to heat up evenly, thus heating and insulating the asphalt passing through. The sprocket drive assembly 503, driven by the reduction motor 504, drives the screw rotor 501 to rotate, distributing the asphalt evenly. Simultaneously, temperature sensors monitor the temperature of the asphalt inside the receiving hopper 2 and outside the spiral distributor 5 in real time, and feed the data back to the electrical control system. The PLC controller of the electrical control system adjusts the power of the electric heating tube 801 and the electric heater 602 according to the temperature deviation. Finally, the ironing device 7 smooths the paved asphalt, completing the road construction.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A green low-carbon-based road construction asphalt paving device, comprising a tractor (1), characterized in that, The tractor (1) is equipped with a receiving hopper (2) at the front end, and a scraper conveyor belt (3) is installed in the middle of the receiving hopper (2). The scraper conveyor belt (3) is arranged in front and behind the tractor (1). The end of the scraper conveyor belt (3) is connected to a spiral distributor (5). The spiral distributor (5) is installed below the mounting frame (4). A material distribution heating device (6) is installed on the upper end of the mounting frame (4). The material distribution heating device (6) is connected to the spiral distributor (5). A flat iron (7) is installed on the rear side of the mounting frame (4). A hopper heating device (8) is installed inside the receiving hopper (2). The spiral distributor (5) includes a spiral rotor (501), which has a cavity inside for circulating liquid heat conduction and flow. The material distribution heating device (6) includes a rotary joint (601), an electric heater (602), a liquid storage tank (603), and a circulating pump (604). Rotary joints (601) are installed at both ends of the spiral rod (501). One side of the rotary joint (601) is connected to the liquid inlet of the electric heater (602) through a circulating hose. The liquid outlet of the electric heater (602) is connected to the liquid inlet of the liquid storage tank (603). The liquid storage tank (603) is fixed on the mounting frame (4). The liquid outlet of the liquid storage tank (603) is connected to the liquid inlet of the circulating pump (604). The liquid outlet of the circulating pump (604) is connected to the other rotary joint (601) through a circulating hose.

2. The asphalt paving device for road construction based on green and low-carbon principles according to claim 1, characterized in that, The spiral distributor (5) also includes a support base (502), a sprocket drive assembly (503), and a geared motor (504). The support base (502) is fixed on both sides of the mounting frame (4) and connected to both ends of the spiral rotor (501) through a bearing seat. One end of the sprocket drive assembly (503) is connected to the spiral distributor (5), and the other end is connected to the output end of the geared motor (504). The geared motor (504) is fixed on the mounting frame (4).

3. The green low-carbon based road construction asphalt paving device according to claim 1, characterized in that, The hopper heating device (8) includes an electric heating tube (801) and a connecting cable (802). The electric heating tube (801) is embedded in the inner wall of the receiving hopper (2) and is connected to the electrical control system through the connecting cable (802).

4. The asphalt paving device for road construction based on green and low-carbon principles according to claim 1, characterized in that, A hopper hydraulic cylinder (201) is installed between the bottom of the receiving hopper (2) and the tractor (1).

5. The asphalt paving device for road construction based on green and low-carbon principles according to claim 1, characterized in that, The top of the mounting bracket (4) is installed on the rear side of the tractor (1) via the mounting bracket hydraulic cylinder (401), and the left and right sides are installed and connected to the tractor (1) via the traction arm (402).

6. The green low-carbon based road construction asphalt paving device according to claim 1, characterized in that, The mounting bracket (4) is equipped with horizontally telescopic side plate hydraulic cylinders (403) on both sides, and a vertical side plate (404) is fixedly installed on the outer end of the side plate hydraulic cylinder (403).

7. The green low-carbon based road construction asphalt paving device according to claim 1, characterized in that, Temperature sensors for detecting asphalt temperature are installed inside the receiving hopper (2) and outside the spiral distributor (5).

8. The asphalt paving device for road construction based on green and low-carbon principles according to claim 1, characterized in that, The liquid storage tank (603) is a double-layer insulated tank, and the circulation hose is an insulated hose.

9. The asphalt paving device for road construction based on green and low-carbon principles according to claim 1, characterized in that, The circulating liquid is heat transfer oil.

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