CN113481791A - Asphalt distribution truck and paving method using same - Google Patents

Abstract

The application relates to an asphalt distribution vehicle, which comprises a movable vehicle body, a tank body which is arranged on the vehicle body and stores asphalt, a heating device which is arranged in the tank body and heats the asphalt in the tank body, and a spraying device which is arranged on the vehicle body and sprays the asphalt in the tank body to the road surface, wherein the heating device comprises a plurality of heating plates which are arranged in the tank body, a plurality of heating pipes which are arranged in the heating plates in a snake shape in a one-to-one correspondence way, plate through holes which penetrate through the heating plates, a heat conduction oil tank which is arranged on the vehicle body and heats the heat conduction oil, an oil inlet pipe which is arranged in the tank body and is communicated with each heating pipe, an oil outlet pipe which is arranged in the tank body and is communicated with each heating pipe and the heat conduction oil tank, a heat conduction oil circulating pump which is arranged on the vehicle body and circularly feeds the heat conduction oil in the heat conduction oil tank into the oil inlet pipe, and a regulating and heating mechanism which is arranged on the oil outlet pipe and the oil inlet pipe and can feed the heat conduction oil into partial heating pipes, not all asphalts all heat when possessing the asphalt heating, can reduce the effect of thermal waste.

Description

Asphalt distribution truck and paving method using same

Technical Field

The application relates to the field of paving equipment, in particular to an asphalt spreading vehicle and a paving method using the same.

Background

The asphalt is a common paving material, has good toughness and strength, is simple to construct, is simple to maintain at a later stage, can be partially rebuilt when needing to be renovated at the later stage, and does not need to be rebuilt integrally like a concrete pavement, thereby consuming more resources and energy. More and more asphalt pavements with special functions appear, for example, permeable asphalt pavements are used for constructing sponge cities, so that the water environment below the pavements is not easily damaged greatly; the low-noise road surface reduces the noise generated when the vehicle runs and reduces the influence on the surrounding environment of the road surface; the long-life road surface reduces the required expense of later maintenance for pitch more and more possesses environmental protection and energy saving's characteristic, and old pitch can mix with new pitch and reuse, can better resources are saved.

When asphalt is used for paving, an asphalt spreading vehicle is used for paving large-area asphalt on a straight road, asphalt is injected into a tank body on a vehicle, then the asphalt in the tank body is kept in a liquid state through a corresponding heating system, and then the asphalt is sprayed out from a row of spray heads on a spray head frame at the tail part of the vehicle which runs forwards slowly through an asphalt pump.

In view of the above-mentioned related technologies, the inventor believes that the whole tank body is heated when a general asphalt distribution truck is heated, but the asphalt in the tank body is not used up at one time when a road is paved, and heat consumed for heating the unused asphalt is unnecessary, which results in a defect of large heat waste during heating.

Disclosure of Invention

In order to reduce the heat wasted during heating, the application provides an asphalt spreading vehicle and a paving method using the asphalt spreading vehicle.

In a first aspect, the asphalt distribution truck provided by the application adopts the following technical scheme:

the utility model provides an asphalt distribution vehicle, includes the automobile body that can move, locate the automobile body and the jar body of deposit pitch, locate jar body and carry out the heating device that heats to jar internal pitch, locate the automobile body and spray the internal pitch of jar to the sprinkler on road surface, heating device is including locating several hot plates in the jar body, several heating pipes that the one-to-one located each hot plate, run through the board via hole of seting up in the hot plate, locate the automobile body and to the heat conduction oil tank of heat conduction oil heating, locate the jar body and feed through in the oil pipe of advancing of each heating pipe, locate the jar body and feed through in the oil pipe of each heating pipe and heat conduction oil tank, locate the automobile body and with the heat conduction oil circulation of heat conduction oil tank in send into the heat conduction oil circulating pump of advancing in the oil pipe, locate the heating pipe and can make the part heating pipe in send into the regulation heating mechanism of heat conduction oil.

Through adopting above-mentioned technical scheme for when carrying out the internal pitch heating of jar, send the conduction oil into the heating pipe in the different hot plates respectively according to the approximate volume that pitch will spray for pitch between two hot plates that the temperature risees is heated and is kept liquid, need not heat whole jar of body, reduces and consumes too much unnecessary heat when heating pitch.

Optionally, the adjusting and heating mechanism comprises an inner wall block arranged at one end of each heating pipe, a spring block arranged at one side of the inner wall block, which deviates from the oil inlet pipe, a sealing block arranged between the spring block and the inner wall block, a compression spring arranged between the sealing block and the spring block and forcing the sealing block to tightly support the inner wall block, and a one-way valve arranged at the position of each heating pipe, which is communicated with the oil outlet pipe and enables heat conduction oil to flow from the heating pipe to the oil outlet pipe, wherein the inner wall block is provided with an oil passing hole in a penetrating manner, the sealing block can seal the oil passing hole, and the elastic modulus of the compression spring communicated with the spraying device is larger when the tank body is far away.

By adopting the technical scheme, when the consumption of asphalt is small, the pressure of the heat transfer oil circulating pump is adjusted to be small, so that only the compression spring close to the communication part between the tank body and the spraying device can be compressed by the heat transfer oil in the oil inlet pipe, the sealing block is far away from the inner wall block of the pipe, and the heat transfer oil in the oil inlet pipe can enter the heating pipe through the block oil passing hole; when the pitch quantity is great, promote the pressure of conduction oil circulating pump, make the conduction oil that advances in the oil pipe can be with keeping away from the compression spring compression of jar body and sprinkler intercommunication department, make originally keep away from jar body and sprinkler intercommunication department and do not play the heating plate of heating effect also can heat the pitch of keeping away from jar body and sprinkler intercommunication department in jar body this moment, so that adjust and control the quantity that the heating plate heaied up according to the pitch quantity of difference, and the setting up of check valve makes the conduction oil that goes out in the oil pipe be difficult for entering into the heating pipe to the convenience.

Optionally, the bottom of the tank body is communicated with an in-tank rod arranged at the position of the spraying device, one end, away from the inner wall of the tank body, of the in-tank rod is provided with an opening heating pipe, two ends of the opening heating pipe are respectively communicated with the oil inlet pipe and the oil outlet pipe, and heat conduction oil in the oil inlet pipe can directly flow into the oil outlet pipe through the opening heating pipe.

Through adopting above-mentioned technical scheme for when the pitch quantity is very little, the conduction oil is direct only to the pitch that jar body bottom communicates in sprinkler's position department through the oral area heating pipe and heats, need not heat the pitch through the hot plate again, reduces thermal unnecessary waste, also ensures simultaneously to have the conduction oil to carry out the circulation flow through the oral area heating pipe all the time, makes the conduction oil that advances in oil pipe and go out oil pipe can better keep the circulation flow when needs heat.

Optionally, the spring block is provided with an insertion barrel, and the sealing block is provided with a sleeve tightly sleeved on the outer wall of the insertion barrel along the length direction of the compression spring.

Through adopting above-mentioned technical scheme for sealed piece can stably remove, makes when compression spring rebounds at every turn, sealed piece can be better set moving direction in order to cross the oilhole with the piece and carry out the shutoff.

Optionally, the sprinkler is including locating the pitch pipe that communicates in jar body bottom, communicate in pitch pipe shaft and be used for the internal pitch pump of transmission tank, locate the spraying frame of automobile body afterbody department, locate and spray the frame and communicate and keep away from a jar body one end in order to face the road surface with pitch spun pitch shower nozzle in pitch pipe, pitch shower nozzle is two rows of every row's several and evenly arranges.

Through adopting above-mentioned technical scheme, when the vehicle antedisplacement carried out pitch and sprays, two rows of pitch shower nozzles can spray two-layer pitch on the road surface, promote the thickness of pitch for the pitch top layer is more wear-resisting.

Optionally, a nozzle valve is arranged between each asphalt nozzle and the asphalt pipe.

Through adopting above-mentioned technical scheme, can switch the shower nozzle valve of different quantity as required, adjust the width of pitch spraying, also can be in touchhing for example inspection shaft lid department and close several shower nozzle valves in the middle to avoid carrying out the spraying of pitch to inspection shaft lid surface.

Optionally, a heat transfer pipe is sleeved outside the asphalt pipe, a heat transfer groove is formed in the heat transfer pipe, and two ends of the heat transfer groove are communicated with the oil inlet pipe and the oil outlet pipe in a one-to-one correspondence manner.

Through adopting above-mentioned technical scheme for when carrying out pitch and spraying the internal pitch of jar and heating, the pitch pipe also can be heated by heat transmission pipe in the lump, makes and passes through the pitch pipe from pitch shower nozzle spun in-process at pitch, and pitch temperature is difficult excessively to descend, especially when temperature was lower winter, can better play and reduce pitch and the difficult possibility that bonds mutually between pitch and the road surface when pitch shower nozzle blowout.

Optionally, the heat pipe is internally provided with a plurality of lantern rings which are tightly sleeved on the outer wall of the asphalt pipe, and the outer wall of the heat pipe is provided with a plurality of fixing rods connected to the outer wall of the tank body.

Through adopting above-mentioned technical scheme for the pitch pipe that is arranged in the heat transfer pipe also can receive the better support that comes from the lantern ring at the in-process that the vehicle went, makes pitch pipe be difficult for appearing great rocking, reduces the possibility of the seepage that appears of pitch pipe and jar body junction.

Optionally, a gap exists between the upper surface of the heating plate and the upper surface of the tank body, and the upper surfaces of all the heating plates are provided with the same measuring rod.

By adopting the technical scheme, when asphalt is added into the tank body and the measuring rod is submerged by the asphalt, the injection of the asphalt is stopped, so that the tank body is not filled with excessive asphalt, and the possibility that the asphalt on the upper part of the tank body cannot be well heated by the heating plate is reduced.

In a second aspect, the present application provides a paving method using an asphalt spreading vehicle, which adopts the following technical solutions:

a paving method using an asphalt spreading vehicle specifically comprises the following steps.

Step 1, tamping a roadbed soil layer through a hydraulic tamper;

step 2, paving a coarse gravel layer and a fine gravel layer on the tamped soil layer from bottom to top in sequence, and paving a heightening layer formed by compacting industrial waste residues on the fine gravel layer;

and 3, pouring a fine stone concrete layer above the heightening layer, roughening the surface of the fine stone concrete layer, and spraying asphalt above the fine stone concrete layer by using an asphalt spraying vehicle.

Through adopting above-mentioned technical scheme, by the pitch sprinkling car that this application provided spray of pitch unnecessary thermal consumption when can well reduce pitch heating, help energy-conservation to pave industrial waste residue, waste utilization, and carry out pitch spraying on the pea gravel concrete layer surface through roughening, make the pitch layer keep under the circumstances of leveling and pea gravel concrete layer between can better firmness.

In summary, the present application includes at least one of the following benefits:

1. the asphalt between the two heating plates with the increased temperature is heated to be kept in a liquid state, the whole tank body is not required to be heated, and the consumption of too much unnecessary heat during asphalt heating is reduced;

2. the temperature of the asphalt is not easy to excessively drop in the process that the asphalt is sprayed out from the asphalt spray head through the asphalt pipe, and particularly when the temperature is low in winter, the possibility that the asphalt and the pavement are not easy to bond when the asphalt is sprayed out from the asphalt spray head can be well reduced.

Drawings

FIG. 1 is a schematic structural diagram of a main body of an asphalt distributor of the present application;

FIG. 2 is a schematic sectional view of a tank body in section to show the inside of the tank body, a heating plate near the rear of a vehicle body in section to show the inside of the heating plate, a plate pipe of the heating plate in section removed, and a heat transfer pipe and an asphalt pipe near an asphalt outlet of an asphalt pump in section;

FIG. 3 is an enlarged view at A in FIG. 2;

fig. 4 is an enlarged view at B in fig. 2.

Description of reference numerals: 1. a vehicle body; 11. an access hole; 12. a spring block lever; 13. a notch block; 14. a plate passing through the tube; 2. a tank body; 21. an asphalt spray head; 22. a nozzle valve; 23. a heat transfer pipe; 24. a heat transfer tank; 25. a measuring rod; 26. a collar; 27. fixing the rod; 28. an asphalt outlet; 29. an asphalt inlet; 3. heating plates; 31. a board via hole; 32. block oil passing holes; 33. an in-can rod; 34. an opening heating pipe; 35. inserting a cylinder; 36. a sleeve; 37. an asphalt pipe; 38. an asphalt pump; 39. a spraying frame; 4. heating a tube; 41. a heat-conducting oil tank; 42. an oil inlet pipe; 43. an oil outlet pipe; 44. a heat transfer oil circulating pump; 45. a tube inner wall block; 46. a spring block; 47. a sealing block; 48. a compression spring; 49. a one-way valve.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

The embodiment of the application discloses asphalt distribution truck, refer to fig. 1 and 2, including automobile body 1 that can antedisplacement, 1 fixedly connected with jar body 2 of automobile body, jar body 2 chooses for use the oval cross-section when the road conditions are unstable, chooses for use the rectangular cross-section when the road conditions are stable, explains with the jar body 2 of rectangular cross-section as the example in this embodiment, and jar body 2 length direction is on a parallel with 1 length direction of automobile body. Heating devices capable of heating the asphalt in the tank body 2 are arranged on the tank body 2 and the vehicle body 1. The tail part of the vehicle body 1 is provided with a spraying device for spraying the asphalt in the tank body 2 to the road surface. The middle position of the lower surface of the tank body 2 is provided with an asphalt outlet 28 in a penetrating way, the middle position of the upper surface of the tank body 2 is provided with an asphalt inlet 29 and an access hole 11 in a penetrating way, and both the asphalt inlet 29 and the access hole 11 can be sealed by corresponding sealing covers.

Referring to fig. 2, the heating apparatus includes an oil inlet pipe 42 and an oil outlet pipe 43 fixedly connected to the outer wall of the tank body 2 and horizontally arranged, the length directions of the oil inlet pipe 42 and the oil outlet pipe 43 are parallel to the length direction of the tank body 2, and the oil inlet pipe 42 and the oil outlet pipe 43 are respectively located at two vertical side surfaces of the tank body 2 in the length direction. The vehicle body 1 is detachably connected with a heat conduction oil circulating pump 44 and a heat conduction oil tank 41 through screws, an electric heating pipe is arranged inside the heat conduction oil tank 41 to heat conduction oil, an oil inlet of the heat conduction oil circulating pump 44 is communicated with the heat conduction oil tank 41, an outlet of the heat conduction oil circulating pump 44 is communicated with an oil inlet pipe 42, and an oil outlet pipe 43 is communicated with the heat conduction oil tank 41. The position, where the asphalt outlet 28 is formed, of the tank body 2 is fixedly connected with two vertical tank inner rods 33, the upper ends of the two tank inner rods 33 are fixedly connected with the same port heating pipe 34, the horizontal section of the port heating pipe 34 is annular, two opposite sides of the port heating pipe 34 are in one-to-one correspondence and are respectively communicated with the oil inlet pipe 42 and the oil outlet pipe 43 through pipelines, and the pipelines of the port heating pipe 34 are not shown in the figure.

Referring to fig. 2, the inner wall of the tank body 2 is uniformly provided with two sets of heating plates 3 along the length direction of the tank body 2, the two sets of heating plates 3 are uniformly and symmetrically provided with a plurality of heating plates with an asphalt outlet 28, the heating plates 3 are vertical and parallel to the width direction of the tank body 2, each heating plate 3 is uniformly penetrated and provided with a plurality of plate through holes 31, and a plate fixedly connected with in each plate through hole 31 passes through the pipe 14, so that the asphalt between the two adjacent heating plates 3 can flow through the pipe 14. The upper surface of each heating plate 3 has a distance with the inner upper surface of the tank body 2, the upper surfaces of all the heating plates 3 are fixedly connected with the same measuring rod 25, and the length direction of the measuring rod 25 is parallel to the length direction of the tank body 2. When asphalt is added into the tank body 2 through the asphalt adding port 29, the liquid level of the tank body 2 is checked through the access port 11, and when the measuring rod 25 is submerged by the asphalt in the tank body 2, the injection of the asphalt can be stopped.

Referring to fig. 2 and 3, a heating pipe 4 is disposed in each heating plate 3, the heating pipes 4 are arranged in a serpentine shape, and two ends of each heating pipe 4 are respectively communicated with an oil inlet pipe 42 and an oil outlet pipe 43 in a one-to-one correspondence manner. All install 4 tip departments of heating pipe and make partial heating pipe 4 in be sent into the regulation heating mechanism of conduction oil, regulation heating mechanism is including locating the heating pipe 4 intercommunication and advance the intraductal wall piece 45 of oil pipe 42 one end inner wall, the intraductal wall piece 45 is coaxial to be run through and has been seted up the piece and cross oilhole 32, the side that intraductal wall piece 45 deviates from oil pipe 42 is around the even fixedly connected with several spring block poles 12 of intraductal wall piece 45 axis, all spring block poles 12 integrated into one piece that are close to same intraductal wall piece 45 have same spring block 46, spring block 46 axis is the same with intraductal wall piece 45 axis, spring block 46 is towards the side fixedly connected with compression spring 48 of close intraductal wall piece 45, compression spring 48 keeps away from spring block 46 one end fixedly connected with seal block 47, seal block 47 axis is the same with intraductal wall piece 45 axis, seal block 47 area is greater than the area of piece oil hole 32. The side of the sealing block 47 facing the compression spring 48 is coaxially and fixedly connected with the sleeve 36, the circumferential inner wall of one end of the sleeve 36 far away from the sealing block 47 is coaxially and tightly connected with the inserting cylinder 35 in a sliding manner, one end of the inserting cylinder 35 far away from the sleeve 36 is fixedly connected with the spring block 46, and the compression spring 48 is positioned in the inserting cylinder 35 and the sleeve 36.

Referring to fig. 2 and 3, a check valve 49 is installed at one end of each heating pipe 4, which communicates with the oil outlet pipe 43, so that the conduction oil can only flow from the heating pipe 4 to the oil outlet pipe 43. The compression springs 48 in the heating pipes 4 corresponding to the two groups of heating plates 3 are farther from the asphalt outlet 28 and have larger elastic modulus. When a smaller amount of asphalt needs to be sprayed, the pressure of the conduction oil circulation pump 44 may be controlled such that the compression spring 48 having a smaller elastic modulus near the asphalt outlet 28 is compressed, so that high-temperature conduction oil can be circulated in the heating pipes 4 of several heating plates 3 near the asphalt outlet 28, so that the asphalt near the asphalt outlet 28 remains liquid to be output from the asphalt outlet 28.

Referring to fig. 2 and 4, the spraying device includes an asphalt pipe 37 with an opening at one end connected to the asphalt outlet 28 via a flange, an asphalt pump 38 is connected to a pipe body of the asphalt pipe 37 at a position close to the asphalt outlet 28 via a flange, the asphalt pump 38 is detachably connected to the vehicle body 1 via screws, a horizontal spraying frame 39 is fixedly connected to the tail of the vehicle body 1, the length direction of the spraying frame 39 is parallel to the width direction of the vehicle body 1, one end of the asphalt pipe 37 far from the asphalt outlet 28 is located above the spraying frame 39, the asphalt pipe 37 is located at one end of the spraying frame 39 and is arranged in a form of a three-way pipe, two rows of asphalt sprayers 21 are installed under the spraying frame 39, the two rows of asphalt sprayers 21 are respectively located under two sections of asphalt pipes 37 on the spraying frame 39 one by one-to-one correspondence, a plurality of asphalt sprayers 21 are evenly arranged along the length direction of the spraying frame 39, and a sprayer valve 22 is installed between each asphalt sprayer 21 and the pipe body of the corresponding asphalt pipe 37, the operation of each asphalt spraying nozzle 21 can be controlled by the nozzle valve 22.

Referring to fig. 2 and 4, a plurality of lantern rings 26 are coaxially and tightly inserted on the outer wall of the asphalt pipe 37, heat transfer pipes 23 are coaxially inserted into the asphalt pipes 37 on the two sides of the asphalt pump 38, the inner walls of the heat transfer pipes 23 are fixedly connected to the outer walls of the lantern rings 26, fixing rods 27 are fixedly connected to the outer walls of the heat transfer pipes 23, the fixing rods 27 are fixedly connected to the vehicle body 1, and the heat transfer pipes 23 directly above the spraying frame 39 are fixedly connected to the upper surface of the spraying frame 39. The end part of each heat transfer pipe 23 is coaxially provided with a heat transfer groove 24, the section of the heat transfer groove 24 is annular, the end part of the heat transfer pipe 23 provided with the heat transfer groove 24 is fixedly connected with a notch block 13 for plugging the heat transfer groove 24, and the two ends of the heat transfer groove 24 of each heat transfer pipe 23 are respectively communicated with an oil inlet pipe 42 and an oil outlet pipe 43 in a one-to-one correspondence manner. The heat transfer pipe 23 is correspondingly provided with a through hole at a position close to the asphalt spray nozzle 21 for exposing the spray nozzle valve 22.

The asphalt distribution truck of the embodiment of the application has the following implementation principle: the heat transfer oil circulating pump 44 feeds heat transfer oil into the oil inlet pipe 42 at a pressure such that the heating of the heating panel 3 is performed according to the amount of asphalt to be actually used, so that the liquid asphalt is then sprayed from the asphalt spray head 21 through the asphalt pump 38.

The embodiment of the application also discloses a paving method using the asphalt spreading vehicle, which specifically comprises the following steps:

step 1, tamping a roadbed soil layer through a hydraulic tamper;

step 2, paving a coarse gravel layer and a fine gravel layer on the tamped soil layer from bottom to top in sequence, and paving a heightening layer formed by compacting industrial waste residues on the fine gravel layer;

and 3, pouring a fine stone concrete layer above the heightening layer, roughening the surface of the fine stone concrete layer, and spraying asphalt above the fine stone concrete layer by using an asphalt spraying vehicle.

The implementation principle of the paving method using the asphalt spreading vehicle in the embodiment of the application is as follows: by this application provide a pitch sprinkling car carry out the unnecessary thermal consumption when pitch heating can be reduced better to spraying of pitch, help energy-conservingly to pave industrial waste residue, waste utilization, and carry out pitch spraying at the pea gravel concreten layer surface through the hacking, make the pitch layer keep under the circumstances of leveling and pea gravel concreten layer can be better the firmness between.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. The utility model provides an asphalt distribution truck, includes automobile body (1) that can remove, locate automobile body (1) and the jar body (2) of deposit pitch, locate jar body (2) and carry out the heating device that heats to the interior pitch of jar body (2), locate automobile body (1) and spray the sprinkler on road surface with the interior pitch of jar body (2), its characterized in that: the heating device comprises a plurality of heating plates (3) arranged in a tank body (2), a plurality of heating pipes (4) arranged in each heating plate (3) in a one-to-one correspondence manner, plate through holes (31) formed in the heating plates (3), a heat conduction oil tank (41) arranged on a vehicle body (1) and used for heating heat conduction oil, an oil inlet pipe (42) arranged on the tank body (2) and communicated with each heating pipe (4), an oil outlet pipe (43) arranged on the tank body (2) and communicated with each heating pipe (4) and the heat conduction oil tank (41), a heat conduction oil circulating pump (44) arranged on the vehicle body (1) and used for circularly feeding the heat conduction oil in the heat conduction oil tank (41) into the oil inlet pipe (42), and an adjusting and heating mechanism arranged on the heating pipes (4) and used for feeding the heat conduction oil into partial heating pipes (4).

2. An asphalt distribution truck according to claim 1, characterized in that: the adjusting and heating mechanism comprises an inner wall block (45) arranged at one end of each heating pipe (4) and communicated with the oil inlet pipe (42), a spring block (46) arranged at one side of the inner wall block (45) departing from the oil inlet pipe (42), a sealing block (47) arranged between the spring block (46) and the inner wall block (45), a compression spring (48) arranged between the sealing block (47) and the spring block (46) and used for forcing the sealing block (47) to tightly abut against the inner wall block (45), and a one-way valve (49) arranged at the position of each heating pipe (4) and communicated with the oil outlet pipe (43) and used for enabling heat conduction oil to only flow from the heating pipe (4) to the oil outlet pipe (43), the inner wall block (45) of the pipe penetrates through the oil passing hole (32), the sealing block (47) can seal the oil passing hole (32), and the elastic modulus of a compression spring (48) which is communicated with the spraying device and is farther away from the tank body (2) is larger.

3. An asphalt distribution truck according to claim 1, characterized in that: the position department that jar body (2) bottom communicates in sprinkler is equipped with a jar interior pole (33), and jar body (2) inner wall one end that close jar body (33) was kept away from to jar interior pole (33) is equipped with oral area heating pipe (34), and oral area heating pipe (34) both ends communicate respectively in advancing oil pipe (42) and play oil pipe (43), and the conduction oil that advances in oil pipe (42) can directly flow into play oil pipe (43) via oral area heating pipe (34).

4. An asphalt distribution truck according to claim 2, characterized in that: the spring block (46) is provided with an inserting barrel (35), and the sealing block (47) is provided with a sleeve (36) which is tightly sleeved on the outer wall of the inserting barrel (35) along the length direction of the compression spring (48).

5. An asphalt distribution truck according to claim 1, characterized in that: the spraying device comprises an asphalt pipe (37) communicated with the bottom of the tank body (2), an asphalt pump (38) communicated with a pipe body of the asphalt pipe (37) and used for conveying asphalt in the tank body (2), a spraying frame (39) arranged at the tail of the vehicle body (1), and an asphalt spray head (21) which is arranged on the spraying frame (39) and communicated with one end, far away from the tank body (2), of the asphalt pipe (37) to spray asphalt towards the road surface, wherein the asphalt spray head (21) is formed by uniformly arranging a plurality of each row in two rows.

6. An asphalt distribution truck according to claim 5, wherein: and a spray head valve (22) is arranged between each asphalt spray head (21) and the asphalt pipe (37).

7. An asphalt distribution truck according to claim 5, wherein: the asphalt pipe (37) is externally sleeved with a heat transfer pipe (23), a heat transfer groove (24) is formed in the heat transfer pipe (23), and two ends of the heat transfer groove (24) are communicated with the oil inlet pipe (42) and the oil outlet pipe (43) in a one-to-one correspondence mode.

8. An asphalt distribution truck according to claim 7, wherein: the inner part of the heat transfer pipe (23) is provided with a plurality of lantern rings (26) which are tightly sleeved on the outer wall of the asphalt pipe (37), and the outer wall of the heat transfer pipe (23) is provided with a plurality of fixing rods (27) which are connected with the outer wall of the tank body (2).

9. An asphalt distribution truck according to claim 1, characterized in that: a distance exists between the upper surface of the heating plate (3) and the upper surface of the tank body (2), and the upper surfaces of all the heating plates (3) are provided with the same measuring rod (25).

10. A method of paving a road using an asphalt distribution truck, comprising: the method specifically comprises the following steps:

step 1, tamping a roadbed soil layer through a hydraulic tamper;

step 2, paving a coarse gravel layer and a fine gravel layer on the tamped soil layer from bottom to top in sequence, and paving a heightening layer formed by compacting industrial waste residues on the fine gravel layer;

and 3, pouring a fine stone concrete layer above the heightening layer, roughening the surface of the fine stone concrete layer, and spraying asphalt above the fine stone concrete layer by using an asphalt spraying vehicle.

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