Asphalt movable type rapid heating equipment for rubber asphalt stress absorbing layer

Abstract

The utility model belongs to the field of asphalt pavement construction devices, and particularly relates to on-site mobile rapid heating equipment for rubber asphalt for a rubber asphalt stress absorption layer, which comprises a driving system, an asphalt storage tank, a heating pipe, a burner, a stirrer, a filter and a temperature controller. The heating device has the characteristics of self-driving, self-heating and large asphalt storage capacity, rubber asphalt can be quickly heated to the temperature required by construction, required asphalt can be continuously supplemented for the synchronous chip sealer on the construction site of a rubber asphalt stress absorbing layer, the asphalt supply time is shortened by times, and the construction efficiency is improved. The construction speed of the rubber asphalt stress absorbing layer is increased, the construction time is shortened, the paving cost is reduced, and the labor intensity of workers is relieved.

Description

Technical Field

[0001] The utility model belongs to the field of asphalt pavement construction equipment, and in particular relates to an on-site mobile rapid heating device for rubber asphalt used in a rubber asphalt stress absorption layer. The utility model is mainly used for the construction of rubber asphalt stress absorption layers in the maintenance and repair projects of expressways, national and provincial trunk roads, county and township roads, and municipal roads. The utility model provides a rapid supply of high-temperature asphalt at the construction site for a synchronous crushed stone sealing vehicle used in the construction of the stress absorption layer, so as to achieve the purpose of significantly optimizing the construction period and cost. Background Art

[0002] With the rapid development of my country's economy, the mileage of my country's highways is constantly increasing. Asphalt concrete pavement has the advantages of high strength, good flatness, smooth and comfortable driving, low noise, and low daily maintenance costs. It is the first choice for new construction, renovation, expansion, and maintenance and repair projects of all levels of highways in my country. But at the same time, the high-speed and heavy-loaded road transportation has brought severe challenges to the construction and operation of highway infrastructure. Since most of my country's asphalt pavements belong to semi-rigid base or rigid base asphalt pavements, the semi-rigid base or cement concrete rigid base and the asphalt surface layer are materials of different properties. Therefore, whether the two are well bonded and the continuity of the structure is the focus of this type of asphalt pavement. In addition, when the asphalt surface layer seeps water, it will mostly concentrate on the junction of the surface layer and the base layer, which will cause the asphalt pavement to be pumped, loose, and pitted. There are also asphalt pavements on semi-rigid base and rigid base pavements. Due to the characteristics of the base material, under the action of temperature, temperature shrinkage cracks cannot be avoided and are easily reflected to the asphalt surface layer, which lays the root cause of the durability of the asphalt pavement. Setting a rubber asphalt stress absorption layer between the asphalt surface layer and the base layer is one of the more effective means at present.

[0003] The rubber asphalt stress absorption layer is referred to as SAMI. It means that the single-size crushed stone (or premixed crushed stone) is evenly spread on the rubber asphalt layer by a synchronous gravel sealer, and the rubber asphalt is squeezed to about 3 / 4 of the stone height. After the stone is interlocked, it will form a structural support. The pavement with a gravel seal pattern formed at this time is the rubber asphalt stress absorption layer. The rubber asphalt stress absorption layer is mainly paved between the semi-rigid base and the asphalt pavement, between the milling and overlay layers of the asphalt pavement, or between the cement concrete pavement and the asphalt overlay layer. The rubber asphalt elastic layer with high deformation capacity can absorb the stress concentration at the cracks of the underlying layer, prevent reflective cracks from occurring on the road surface, prevent rainwater from invading the underlying layer, and greatly improve the bonding strength between the underlying layer and the pavement layer.

[0004] During the construction of the rubber asphalt stress absorption layer, the rubber asphalt needs to be heated to 200℃-220℃ to facilitate the spraying of the equipment. This is generally achieved by using the synchronous chip sealer's built-in heating system. At present, the volume of the synchronous chip sealer's asphalt storage and heating system is 6-8m 3After being filled with rubber asphalt, the spraying can be completed in 20 minutes, and the construction workload is about 4,000-5,000 square meters. However, it takes at least 3 hours to heat the rubber asphalt from 160°C to 200°C. The efficiency is low during the large-scale construction of rubber asphalt. A lot of time is consumed in the asphalt heating process. It is necessary to configure multiple synchronous chip seal vehicles to meet the progress requirements, which greatly increases the construction cost. At the same time, when the current truck of rubber asphalt is sprayed, it is necessary to go to a nearby asphalt station to replenish asphalt to the synchronous chip seal vehicle. The distance from the asphalt station to the construction site is as short as more than ten kilometers and as long as one or two hundred kilometers, which makes the asphalt replenishment of the synchronous chip seal vehicle extremely inconvenient.

[0005] In this context, it is necessary to develop a convenient rubber asphalt heating and replenishing equipment that can quickly and continuously replenish rubber asphalt at the required temperature to the synchronous gravel sealing vehicle at the construction site. Utility Model Content

[0006] The purpose of the utility model is to provide a mobile rapid heating device for rubber asphalt in view of the drawbacks of traditional heating and replenishment of rubber asphalt in the large-scale construction process of the above-mentioned rubber asphalt stress absorption layer. The heating device has the characteristics of self-propelled, self-heating and large asphalt storage capacity, and can quickly heat the rubber asphalt to the temperature required for construction. At the construction site, it can continuously replenish the required asphalt for the synchronous gravel sealing vehicle, shortening the time for asphalt replenishment by several times, accelerating the construction speed of the rubber asphalt stress absorption layer, shortening the construction time, reducing the paving cost, and alleviating the labor intensity of employees.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A mobile rapid heating device for asphalt used in a rubber asphalt stress absorption layer comprises the following systems: a travel system, an asphalt storage tank, a heating pipe, a burner, an agitator, a filter and a temperature controller.

[0009] Furthermore, the driving system is a driving system of a tank heavy-duty semi-trailer that meets the requirements of national motor vehicle standards, with a quasi-traction total mass of 40,000 kg;

[0010] Furthermore, the asphalt storage tank is installed directly above the traveling system and is fixed to the traveling system by welding;

[0011] Furthermore, the asphalt storage tank is made of 3-5 mm steel plate;

[0012] Furthermore, the outer wall of the asphalt storage tank has a 10-15 cm thick thermal insulation layer;

[0013] Furthermore, the volume of the asphalt storage tank is 20-30m 3 ;

[0014] Furthermore, the top of the asphalt storage tank is provided with two upper oil inlets, the upper oil inlets are provided with safety covers, and the tail of the storage tank is provided with an oil outlet, and a manual valve is installed at the oil outlet;

[0015] Furthermore, the heating pipe is installed inside the asphalt storage tank, the heating pipe is an inverted S-shape, one end of the heating pipe is connected to the exhaust pipe, and the other end of the heating pipe is connected to the burner;

[0016] Furthermore, the two heating pipes are connected to the same exhaust pipe;

[0017] Furthermore, there are two heating pipes, which are arranged in parallel in the asphalt storage pipe;

[0018] Furthermore, the heating tube is made of a refractory manganese steel material with a thickness of 5-8 mm, and the diameter of the heating tube is 10-20 cm;

[0019] Furthermore, the burner is a diesel burner, and each heating tube end is equipped with a burner;

[0020] Further, the diesel burner is powered by the vehicle cab of the travel system;

[0021] Furthermore, the agitator is arranged at the 1 / 4 and 3 / 4 positions in the horizontal direction of the asphalt storage tank, and the agitator is driven by a hydraulic dock;

[0022] Further, the agitator is perpendicular to the top plane of the asphalt storage tank;

[0023] Furthermore, the filter is arranged at the oil inlet and the oil outlet of the asphalt storage pipe;

[0024] Furthermore, the temperature controller is composed of a controller host and a temperature sensor;

[0025] Furthermore, the temperature controller is linked with the burner signal, and the temperature controller is arranged on the travel system.

[0026] Compared with the prior art, the utility model has the following advantages:

[0027] 1. A mobile rapid heating device for rubber asphalt stress absorption layer, which relies on a tank-type heavy-duty semi-trailer platform and has a mobile driving function. It can be synchronized with the synchronous chip seal vehicle at any time, greatly reducing the time for asphalt replenishment of the synchronous chip seal vehicle;

[0028] 2. The equipment uses double heating tubes and double burners. The burners are used to heat the heating tubes. The temperature of the heating tubes is directly transmitted to the asphalt material. The heating speed is fast, 30m 3It only takes 2 hours to heat the asphalt to 200℃, and it can keep warm continuously. During large-scale construction, it can continuously provide rubber asphalt that meets the temperature requirements for the synchronous chip sealer.

[0029] 3. The equipment is equipped with a temperature controller and a stirrer, which can effectively prevent the asphalt temperature from exceeding the set upper limit during the heating process, causing asphalt aging and deterioration. When the asphalt temperature drops to the lower limit, the burner can be automatically started to heat the asphalt to prevent the temperature from being too low and affecting the asphalt supply of the synchronous chip sealer. At the same time, the double stirrer makes the asphalt heating process more evenly heated to prevent the rubber asphalt from segregating. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the structure of the utility model equipment

[0031] Figure 2 This is a schematic diagram of the heating pipe layout of the utility model equipment

[0032] In the figure: 1-travel system; 2-upper oil inlet; 3-mixer; 4-rubber asphalt; 5-burner; 6-exhaust pipe; 7-heating pipe; 8-safety cover; 9-sensor; 10-asphalt storage tank; 11-filter; 12-manual valve; 13-oil outlet; 14-thermostat host; 15-thermal insulation layer DETAILED DESCRIPTION

[0033] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0034] Example 1

[0035] A mobile rapid heating device for asphalt rubber stress absorption layer, as shown in the attached drawings, comprises a travel system 1, an asphalt storage tank 10, a heating pipe 7, a burner 5, an agitator 3, a filter 11, and a temperature controller 14.

[0036] Furthermore, the driving system 1 is a driving system of a tank heavy-duty semi-trailer that meets the requirements of national motor vehicle standards, and has a quasi-traction total mass of 40,000 kg;

[0037] Furthermore, the asphalt storage tank 10 is installed directly above the traveling system 1 and is fixed to the traveling system 1 by welding;

[0038] Furthermore, the asphalt storage tank 10 is made of 5 mm steel plate;

[0039] Furthermore, the outer wall of the asphalt storage tank 10 has a 15 cm thick thermal insulation layer 15;

[0040] Furthermore, the volume of the asphalt storage tank 10 is 30m 3 ;

[0041] Furthermore, the top of the asphalt storage tank 10 is provided with two upper oil inlets 2, the upper oil inlets 2 are provided with safety covers 8, and the tail of the asphalt storage tank 10 is provided with an oil outlet 13, and a manual valve 12 is installed at the oil outlet 13;

[0042] Furthermore, the heating pipe 7 is installed inside the asphalt storage tank 10, and the heating pipe 7 is an inverted S-shape, one end of the heating pipe 7 is connected to the exhaust pipe 6, and the other end of the heating pipe 7 is connected to the burner 11;

[0043] Furthermore, the two heating pipes 7 are connected to the same exhaust pipe 6;

[0044] Furthermore, two heating pipes 7 are provided, and the two heating pipes 7 are arranged in parallel in the asphalt storage tank 10;

[0045] Furthermore, the heating tube 7 is made of a 5 mm thick fire-resistant manganese steel material, and the diameter of the heating tube 7 is 20 cm;

[0046] Furthermore, the burner 5 is a diesel burner, and each heating tube 7 is provided with a burner 5 at the end thereof;

[0047] Furthermore, the diesel burner 5 is powered by the vehicle cab of the travel system 1;

[0048] Furthermore, the agitator 3 is arranged at the 1 / 4 and 3 / 4 positions in the horizontal direction of the asphalt storage tank 10, and the agitator 3 is driven by a hydraulic wharf;

[0049] Furthermore, the agitator 3 is perpendicular to the top surface of the asphalt storage tank 1;

[0050] Further, the filter 11 is arranged at the oil inlet 2 and the oil outlet 13 of the asphalt storage tank 1;

[0051] Further, the temperature controller 14 is composed of a controller host 14 and a temperature sensor 9;

[0052] Furthermore, the temperature controller 14 is linked to the burner 5 signal, and the temperature controller 14 is arranged on the travel system 1 .

[0053] Example 2

[0054] A mobile rapid heating device for asphalt rubber stress absorption layer, as shown in the attached drawings, comprises a travel system 1, an asphalt storage tank 10, a heating pipe 7, a burner 5, an agitator 3, a filter 11, and a temperature controller 14.

[0055] Furthermore, the driving system 1 is a driving system of a tank heavy-duty semi-trailer that meets the requirements of national motor vehicle standards, and has a quasi-traction total mass of 40,000 kg;

[0056] Furthermore, the asphalt storage tank 10 is installed directly above the traveling system 1 and is fixed to the traveling system 1 by welding;

[0057] Furthermore, the asphalt storage tank 10 is made of 3 mm steel plate;

[0058] Furthermore, the outer wall of the asphalt storage tank 10 has a 10 cm thick thermal insulation layer 15;

[0059] Furthermore, the volume of the asphalt storage tank 10 is 20m 3 ;

[0060] Furthermore, the top of the asphalt storage tank 10 is provided with two upper oil inlets 2, the upper oil inlets 2 are provided with safety covers 8, and the tail of the asphalt storage tank 10 is provided with an oil outlet 13, and a manual valve 12 is installed at the oil outlet 13;

[0061] Furthermore, the heating pipe 7 is installed inside the asphalt storage tank 10, and the heating pipe 7 is an inverted S-shape, one end of the heating pipe 7 is connected to the exhaust pipe 6, and the other end of the heating pipe 7 is connected to the burner 11;

[0062] Furthermore, the two heating pipes 7 are connected to the same exhaust pipe 6;

[0063] Furthermore, two heating pipes 7 are provided, and the two heating pipes 7 are arranged in parallel in the asphalt storage tank 10;

[0064] Furthermore, the heating tube 7 is made of 8 mm thick fire-resistant manganese steel material, and the diameter of the heating tube 7 is 10 cm;

[0065] Furthermore, the burner 5 is a diesel burner, and each heating tube 7 is provided with a burner 5 at the end thereof;

[0066] Furthermore, the diesel burner 5 is powered by the vehicle cab of the travel system 1;

[0067] Furthermore, the agitator 3 is arranged at the 1 / 4 and 3 / 4 positions in the horizontal direction of the asphalt storage tank 10, and the agitator 3 is driven by a hydraulic wharf;

[0068] Furthermore, the agitator 3 is perpendicular to the top surface of the asphalt storage tank 1;

[0069] Further, the filter 11 is arranged at the oil inlet 2 and the oil outlet 13 of the asphalt storage tank 1;

[0070] Further, the temperature controller 14 is composed of a controller host 14 and a temperature sensor 9;

[0071] Furthermore, the temperature controller 14 is linked to the burner 5 signal, and the temperature controller 14 is arranged on the travel system 1 .

[0072] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A mobile rapid heating device for asphalt rubber stress absorption layer, characterized in that: Including travel system, asphalt storage tank, heating pipe, burner, agitator, filter and thermostat; The driving system is a driving system of a tank heavy-duty semi-trailer that meets the requirements of national motor vehicle standards, with a quasi-traction total mass of 40,000 kg; The asphalt storage tank is installed directly above the traveling system and fixed to the traveling system by welding; The asphalt storage tank is made of 3-5mm steel plate; The outer wall of the asphalt storage tank has a 10-15 cm thick thermal insulation layer; The volume of the asphalt storage tank is 20-30m 3 ; The top of the asphalt storage tank is provided with two upper oil inlets, each of which is provided with a safety cover, and the tail of the storage tank is provided with an oil outlet, at which a manual valve is installed; The heating pipe is installed inside the asphalt storage tank, and the heating pipe is an inverted S-shape, one end of the heating pipe is connected to the exhaust pipe, and the other end of the heating pipe is connected to the burner; The two heating pipes are connected to the same exhaust pipe; There are two heating pipes, which are arranged in parallel in the asphalt storage pipe; The heating tube is made of 5-8mm thick fire-resistant manganese steel material, and the diameter of the heating tube is 10-20cm; The burner is a diesel burner, and each heating tube end is equipped with a burner; The diesel burner is powered by the vehicle cab of the travel system; The agitator is arranged at the 1 / 4 and 3 / 4 positions in the horizontal direction of the asphalt storage tank, and the agitator is driven by a hydraulic wharf; The agitator is perpendicular to the top plane of the asphalt storage tank; The filter is arranged at the oil inlet and the oil outlet of the asphalt storage pipe; The temperature controller is composed of a controller host and a temperature sensor; The temperature controller is linked with the burner signal and is arranged on the travel system.

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