A road surface construction device for municipal road engineering

Abstract

The present invention relates to a pavement construction device for municipal road engineering, comprising a transport vehicle provided with an insulation barrel rotatable along its axis; a mixing barrel with a tilting device inside the insulation barrel, a corresponding barrel fixing plate fixedly connected to the inner side of the mixing barrel, a stirring shaft rotatably mounted on the barrel fixing plate, the outer end of the stirring shaft extending to the outer side of the insulation barrel and fixedly connected to a driven helical gear; a stirring drive mechanism comprising a fixed bracket fixed to the transport vehicle inside the insulation barrel, and a second drive motor fixed to the fixed bracket, the output shaft of the second drive motor being located on the axis of the insulation barrel, and the output shaft fixing device of the second drive motor being provided with an active helical gear meshing with the driven helical gear; and a material heating mechanism. The present invention can effectively improve the heating and mixing efficiency of asphalt binder and its heating uniformity, and can effectively improve the spreading uniformity of asphalt binder during the discharging process.

Description

Technical Field

[0001] The present invention relates to a municipal road engineering pavement construction device, which is mainly used for heating and mixing asphalt binder and paving the heated and mixed asphalt binder on the engineering pavement of the corresponding municipal road. Background Art

[0002] "White to black" refers to the conversion of existing cement concrete pavement (off-white) to asphalt concrete pavement (black). With the continued advancement of this "white to black" project, my country's municipal road pavement construction has largely shifted to asphalt concrete pavement construction. The traditional asphalt concrete municipal road pavement construction process involves mixing the asphalt binder at a designated mixing station and then transporting it to the paving site for pavement construction. Due to the rapid temperature loss of the asphalt binder during transportation, subsequent paving, leveling, and compaction processes can be difficult. The finished pavement often falls short of quality standards, leading to a high rate of rework. To address this issue, municipal road pavement construction equipment has begun to be used that can heat and mix the asphalt binder directly at the construction site, and then discharge and compact the heated and mixed material.

[0003] Existing municipal road engineering pavement construction equipment for asphalt concrete pavement construction generally includes a transport vehicle and a mixing drum loaded on the transport vehicle. Hot steam is transmitted to the mixing drum through a steam generator installed on the transport vehicle to contact the material in the mixing process, and then the material is heated and mixed in the mixing drum; then the transport vehicle is moved to spread the asphalt binder that has completed heating and mixing onto the road surface, and then the asphalt binder is compacted by a compaction roller connected to the rear of the transport vehicle. Such pavement construction equipment for asphalt concrete pavement construction has the following defects during actual use: 1) During the heating and mixing process of the asphalt binder, the heating and mixing efficiency is low, and the heating uniformity of the asphalt binder is insufficient. Therefore, there is often a problem of overheating of some materials and insufficient heating of some materials, resulting in low pavement construction efficiency and relatively low pavement quality after construction; 2) It is difficult to discharge the material after heating and mixing, and the discharge is mostly at a fixed point, which makes spreading the material difficult and the spreading effect is poor, resulting in a large amount of manual labor required to level the material after spreading and dropping, which not only further affects the pavement construction efficiency, but also has an adverse effect on the subsequent pavement compaction operation, thereby further reducing the pavement quality after construction. Summary of the Invention

[0004] In view of the problems existing in the above-mentioned prior art, the present invention provides a municipal road engineering pavement construction device, which can effectively solve the problems existing in the above-mentioned prior art.

[0005] The technical solution of the present invention is:

[0006] A municipal road engineering pavement construction device, comprising

[0007] A transport vehicle, wherein the transport vehicle is provided with an insulation cylinder rotatable along its axis, the insulation cylinder being driven by a corresponding first drive motor, the inner side of the insulation cylinder being closed, the outer side of the insulation cylinder being provided with a corresponding opening, and the opening being openably and closably provided with a corresponding sealing plate;

[0008] A mixing barrel, a tilting device is inside the insulation barrel, a corresponding barrel fixing plate is fixedly connected to the inner side of the mixing barrel, the top of the mixing barrel is upwardly connected to a corresponding feeding pipe, the feeding end of the feeding pipe extends to the top of the insulation barrel and is detachably mounted with a corresponding cover plate; a corresponding stirring shaft is rotatably mounted on the barrel fixing plate, the inner end of the stirring shaft extends into the mixing barrel and is fixedly connected to a plurality of corresponding mixing rods, the outer end of the stirring shaft extends through the outer side of the insulation barrel and is fixedly connected to a corresponding driven helical gear;

[0009] The stirring drive mechanism includes a fixed bracket fixed to the transport vehicle inside the heat-insulating cylinder, and a second drive motor fixed to the fixed bracket, wherein the output shaft end of the second drive motor faces the heat-insulating cylinder, and the output shaft of the second drive motor is located on the axis of the heat-insulating cylinder. The output shaft fixing device of the second drive motor has a driving helical gear meshing with the driven helical gear. When the heat-insulating cylinder rotates about its axis, the mixing cylinder moves in a circular arc trajectory about the axis of the heat-insulating cylinder, and the driven helical gear moves in a circular arc trajectory about the output shaft of the second drive motor and is driven by the driving helical gear.

[0010] The material heating mechanism is used to heat the material in the mixing cylinder inside the heat preservation cylinder.

[0011] The transport vehicle is fixed with a group of spaced fixing seats at positions corresponding to the insulation cylinder, and the insulation cylinder is rotatably mounted on the fixing seats through corresponding fixed bearings. The insulation cylinder is fixed to a corresponding annular rack between a group of fixing seats, and the bottom of the annular rack is engaged with a driving gear driven by the first driving motor.

[0012] The mixing cylinder is tilted in the interior of the heat-insulating cylinder through a group of corresponding support plates, and a plurality of corresponding air holes are provided on the support plates.

[0013] The material heating mechanism includes a steam generator and a steam delivery pipe for delivering the hot steam generated by the steam generator to between the insulation cylinder and the mixing cylinder. The steam delivery pipe is connected to the center of the insulation cylinder through a corresponding rotary joint.

[0014] The output end of the steam delivery pipe is arranged on the upper side of the bottom of the insulation cylinder at an angle of 15-35 degrees clockwise. Four photoelectric sensors for sensing the driven helical gear are arranged at the upper, lower, left and right ends of the fixed bracket along the running path of the driven helical gear. The first drive motor is a forward and reverse drive motor.

[0015] It also includes a material spreading and flattening mechanism, which includes a material spreading frame that can be swingably mounted on the outer end of the transport vehicle, and the end of the material spreading frame that is not connected to the transport vehicle is tilted downward and rotatably mounted with a corresponding flattening roller, and the inner fixing device of the material spreading frame has a material spreading guide hopper that is adapted to the outer end of the mixing barrel.

[0016] The downwardly inclined device on the spreading frame at the lower side of the material spreading guide hopper is provided with a corresponding discharging spreading plate, and a number of corresponding spreading shafts are installed in the spreading guide hopper above the discharging spreading plate and rotated side by side. The spreading shafts are respectively provided with spiral feeding plates for guiding materials, and the adjacent two spreading shafts are respectively connected by gear meshing, and one of the spreading shafts is transmission-connected to the third drive motor fixed on the outside of the material spreading frame.

[0017] The outer end of the discharging spreading plate is hinged downwardly with a corresponding blanking plate, and the end of the blanking plate not hinged to the discharging spreading plate is connected to both sides of the spreading frame through a group of corresponding connecting springs.

[0018] The cover plate is detachably mounted to the feed end of the feeding pipe by means of bolt locking. The top of the outer end of the insulation cylinder is fixedly connected to a corresponding first support block. The top of the sealing plate is hinged to the first support block. The bottom of the outer end of the insulation cylinder is fixedly connected to a corresponding second support block. A corresponding fixing groove is provided in the middle of the second support block. A plug-in portion adapted to the fixing groove is provided at the bottom of the sealing plate, and the plug-in portion is fixed to the second support block by a corresponding pin.

[0019] The middle part of the sealing plate is provided with an encapsulating cone which is adapted to the outer end of the mixing barrel, and the outer bottom of the sealing plate is fixed outward with a corresponding handle. When the plug-in part of the sealing plate is fixed to the second support block, the encapsulating cone is closed and fixed to the outer end of the mixing barrel; the outer end of the first support block extends outward to the outside of the insulation barrel, and the outer side of the first support block is fixed downward with an L-shaped clamping shaft. The upper side of the sealing plate is hinged upward with a corresponding fixing hook, and a corresponding reset spring is connected between the upper part of the fixing hook and the sealing plate. When the sealing plate is opened upward, the fixing hook abuts against the L-shaped clamping shaft, and the reset spring is compressed until the fixing hook is buckled onto the L-shaped clamping shaft, and the reset spring is reset.

[0020] Advantages of the present invention:

[0021] 1) The transport vehicle of the present invention is provided with an insulation cylinder that can rotate along its axis, and a mixing cylinder is installed obliquely inside the insulation cylinder. During the mixing process, the raw materials constituting the asphalt binder are fed into the mixing cylinder through the feeding pipe, and then the cover is fixed in place, and the material heating mechanism can be turned on to heat the material in the mixing cylinder inside the insulation cylinder; during the heating process, the first drive motor is started to drive the insulation cylinder to rotate around its axis, so that the mixing cylinder moves in a circular trajectory around the axis of the insulation cylinder, thereby turning the material; at the same time, the driven helical gear can move in a circular trajectory around the output shaft of the second drive motor. Under the drive of the second drive motor, the stirring shaft can be driven to rotate without affecting the circular trajectory movement of the mixing cylinder.

[0022] Firstly, it can significantly stir the asphalt binder during the mixing process, reducing the mixing difficulty and significantly improving the mixing effect. Secondly, it can effectively increase the kinetic energy of the material, thereby improving the heat absorption efficiency and uniformity of the material, significantly improving the heat exchange efficiency, heat exchange effect, and heat exchange uniformity of the material. This effectively and significantly improves the heating efficiency, heating effect, and heating uniformity of the asphalt binder during the heating and mixing process, thereby improving road construction efficiency and the quality of the road surface after construction.

[0023] 2) The present invention uses a steam generator in conjunction with a steam delivery pipe to deliver hot steam directly between the insulation cylinder and the mixing cylinder, which can directly heat the material in the mixing cylinder without affecting the mixing process. However, the provision of the steam delivery pipe will have an adverse effect on the mixing and subsequent discharge of the material. To this end, the output end of the steam delivery pipe of the present invention is arranged on the upper side of the bottom of the insulation cylinder at an angle of 15-35 degrees clockwise; thereafter, the present invention is provided with four photoelectric sensors for sensing the driven helical gear at the upper, lower, left and right ends of the fixed bracket along the running path of the driven helical gear, and the first drive motor is set as a forward and reverse drive motor.

[0024] When mixing materials, the first drive motor starts to rotate forward to drive the insulation cylinder to rotate clockwise through 180°. After the photoelectric sensor at the bottom of the fixed bracket senses the driven bevel gear, the first drive motor starts to rotate reversely to drive the insulation cylinder to rotate counterclockwise through 180°. After the photoelectric sensor at the top of the fixed bracket senses the driven bevel gear, the first drive motor starts to rotate forward again. By repeating the above actions, the mixing cylinder is effectively driven to perform a longitudinal 180° circular arc motion around the axis of the insulation cylinder, thereby effectively forming a sufficient turning effect on the material during the heating process without affecting the heating.

[0025] When discharging, the first drive motor starts to rotate forward to drive the insulation cylinder to rotate clockwise over 90°. After the photoelectric sensor on the right side of the fixed bracket senses the driven bevel gear, the first drive motor starts to rotate reversely to drive the insulation cylinder to rotate counterclockwise over 180°. After the photoelectric sensor on the left side of the fixed bracket senses the driven bevel gear, the first drive motor starts to rotate forward again to drive the insulation cylinder to rotate clockwise over 180°. By repeating the above actions to effectively drive the mixing cylinder to perform a horizontal 180° circular trajectory around the axis of the insulation cylinder, the material can be effectively discharged in a state of horizontally uniform distribution. Under the premise of ensuring smooth discharging, the material spreading effect of the discharging process is effectively improved, and the amount of subsequent manual leveling of the material after spreading can be greatly reduced, thereby further greatly improving the construction efficiency of the road surface and further improving the quality of the road surface after construction.

[0026] 3) The present invention also includes a material spreading and flattening mechanism. After heating and mixing, the asphalt binder is evenly distributed horizontally onto a discharge plate below the material guide hopper of the spreading and flattening mechanism. The rotation of the spreading shaft and the spiral feed plate flattens the thicker material, further leveling it. The flattened material then passes through the discharge plate and onto a feed plate, where it is guided onto the road surface. Because the discharge process can result in uneven material flow, the present invention further incorporates an articulated mounting system for the feed plate, which is elastically supported and connected via a connecting spring.

[0027] In this way, during the unloading process, when the material discharge volume is large, the stretching amount of the connecting spring increases, and the material is evenly spread inward; when the material discharge volume is small, the stretching amount of the connecting spring decreases, causing the material to be spread outward, thereby performing reverse stacking and laying of the material when the material discharge volume is small, so as to further improve the spreading effect of the material discharge process, thereby further significantly improving the road construction efficiency and further improving the road quality after construction.

[0028] 4) The top of the sealing plate is hinged to the first support block, and the bottom is fixed to the second support block via a corresponding latch. After heating and mixing, the latch is manually pulled out with a handheld clamp, and then a long rod with a hook engages the handle on the outside of the sealing plate to effectively open the sealing plate. The L-shaped clamping shaft, fixed hook, and return spring are used to secure the opened sealing plate to the L-shaped clamping shaft, which is very convenient and effectively ensures the safety of the present invention during the unloading and pressing processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the present invention.

[0030] Figure 2 It is a cross-sectional view of the present invention.

[0031] Figure 3 This is a structural diagram of a material spreading shaft installed in a material spreading guide hopper.

[0032] Figure 4 This is a structural diagram of the steam delivery pipe connected to the insulation cylinder.

[0033] Figure 5 It is a structural diagram of the insulation cylinder rotating clockwise.

[0034] Figure 6 It is a structural diagram of the insulation cylinder rotating counterclockwise. DETAILED DESCRIPTION

[0035] In order to facilitate understanding by those skilled in the art, the structure of the present invention is further described in detail with reference to the embodiments and the accompanying drawings:

[0036] refer to Figure 1-6 , a municipal road engineering pavement construction device, comprising

[0037] A transport vehicle 1 is provided with a heat preservation cylinder 2 that can rotate along its axis. The heat preservation cylinder 2 is driven by a corresponding first drive motor 3. The inner side of the heat preservation cylinder 2 is closed, and the outer side of the heat preservation cylinder 2 is provided with a corresponding opening. A corresponding sealing plate 4 is installed at the opening to be opened and closed;

[0038] A mixing barrel 5, with a tilting device inside the heat-insulating barrel 2, is fixedly connected to the inner side of the mixing barrel 5 with a corresponding barrel fixing plate 6, and the top of the mixing barrel 5 is upwardly connected to a corresponding feeding pipe 7, the feeding end of the feeding pipe 7 extends to the top of the heat-insulating barrel 2 and is detachably mounted with a corresponding cover plate 8; a corresponding stirring shaft 9 is rotatably mounted on the barrel fixing plate 6, the inner end of the stirring shaft 9 extends into the mixing barrel 5 and is fixedly connected to a plurality of corresponding mixing rods 10, and the outer end of the stirring shaft 9 extends through the outer side of the heat-insulating barrel 2 and is fixedly connected to a corresponding driven helical gear 11;

[0039] The stirring drive mechanism 12 includes a fixed bracket 1201 fixed to the transport vehicle 1 on the inner side of the heat-insulating cylinder 2, and a second drive motor 1202 fixed to the fixed bracket 1201. The output shaft end face of the second drive motor 1202 is arranged to face the heat-insulating cylinder 2, and the output shaft of the second drive motor 1202 is located on the axis of the heat-insulating cylinder 2. The output shaft fixing device of the second drive motor 1202 has a driving bevel gear 1203 meshing with the driven bevel gear 11. When the heat-insulating cylinder 2 rotates around its axis, the mixing cylinder 5 moves in a circular trajectory around the axis of the heat-insulating cylinder 2. The driven bevel gear 11 moves in a circular trajectory around the output shaft of the second drive motor 1202 and is driven by the driving bevel gear 1203.

[0040] The material heating mechanism 13 is used to heat the material in the mixing cylinder 5 inside the heat preservation cylinder 2.

[0041] The transport vehicle 1 is fixed with a group of spaced fixing seats 14 at positions corresponding to the insulation cylinder 2, and the insulation cylinder 2 is rotatably mounted on the fixing seats 14 through corresponding fixed bearings 15. The insulation cylinder 2 is fixed to a corresponding annular rack 16 between a group of fixing seats 14, and the bottom of the annular rack 16 is meshed with a driving gear 17 driven by the first driving motor 3.

[0042] The mixing cylinder 5 is tilted inside the heat preservation cylinder 2 through a set of corresponding support plates 18 , and a plurality of corresponding air holes 1801 are provided on the support plates 18 .

[0043] The material heating mechanism 13 includes a steam generator 1301 and a steam delivery pipe 1302 for delivering the hot steam generated by the steam generator 1301 to between the insulation cylinder 2 and the mixing cylinder 5. The steam delivery pipe 1302 is connected to the center of the insulation cylinder 2 through a corresponding rotary joint 19.

[0044] The output end of the steam delivery pipe 1302 is arranged at an angle of 22.5° clockwise on the upper side of the bottom of the insulation cylinder 2. Four photoelectric sensors 20 for sensing the driven bevel gear 11 are arranged at the upper, lower, left and right ends of the fixed bracket 1201 along the running path of the driven bevel gear 11. The first drive motor 3 is a forward and reverse drive motor.

[0045] The bottom of the heat preservation cylinder 2 is downwardly connected to a corresponding pressure relief pipe 31 , and a corresponding pressure relief valve 32 is fixed on the pressure relief pipe 31 .

[0046] It also includes a material spreading and flattening mechanism 21, which includes a material spreading frame 2101 that can be swingably mounted on the outer end of the transport vehicle 1. The end of the material spreading frame 2101 that is not connected to the transport vehicle 1 is tilted downward and rotatably mounted with a corresponding flattening roller 2102. The inner fixing device of the material spreading frame 2101 has a material spreading hopper 2103 that is adapted to the outer end of the mixing barrel 5.

[0047] The material spreading frame 2101 on the lower side of the material spreading guide hopper 2103 is provided with a corresponding discharging spreading plate 2104 on the downwardly inclined device, and three corresponding material spreading shafts 2105 are installed in the material spreading guide hopper 2103 on the upper part of the material spreading plate 2104 to rotate side by side. The material spreading shafts 2105 are respectively provided with spiral feeding plates 2106 for guiding materials, and the adjacent two material spreading shafts 2105 are respectively connected by gear meshing. One of the material spreading shafts 2105 is transmission-connected to the third drive motor 2107 fixed on the outside of the material spreading frame 2101.

[0048] The outer end of the discharge spreading plate 2104 is hinged downward to have a corresponding blanking plate 22 , and the end of the blanking plate 22 that is not hinged to the discharge spreading plate 2104 is connected to both sides of the spreading frame 2101 through a set of corresponding connecting springs 23 .

[0049] The cover plate 8 is detachably mounted to the feed end of the feeding pipe 7 by means of bolt locking. The top of the outer end of the insulation cylinder 2 is fixedly connected to a corresponding first support block 24. The top of the sealing plate 4 is hinged to the first support block 24. The bottom of the outer end of the insulation cylinder 2 is fixedly connected to a corresponding second support block 25. The middle part of the second support block 25 is provided with a corresponding fixing groove. The bottom of the sealing plate 4 is provided with a plug-in portion adapted to the fixing groove, and the plug-in portion is fixed to the second support block 25 by a corresponding pin 26 (to ensure that the pin 26 does not fall off during the rotation of the insulation cylinder 2, the outer side wall of the pin 26 used in this embodiment is provided with an external thread, and the pin 26 is fixed to the two support blocks 25 by a thread locking method).

[0050] The middle part of the sealing plate 4 is provided with an encapsulating cone 401 which is adapted to the outer end of the mixing barrel 5, and the outer bottom of the sealing plate 4 is fixed outward with a corresponding handle 27. When the plug-in part of the sealing plate 4 is fixed to the second support block 25, the encapsulating cone 401 is closed and fixed to the outer end of the mixing barrel 5; the outer end of the first support block 24 extends outward to the outside of the insulation barrel 2, and the outer side of the first support block 24 is fixed downward with an L-shaped clamping shaft 28. The upper side of the sealing plate 4 is hinged upward with a corresponding fixing hook 29, and a corresponding reset spring 30 is connected between the upper part of the fixing hook 29 and the sealing plate 4. When the sealing plate 4 is opened upward, the fixing hook 29 abuts against the L-shaped clamping shaft 28, and the reset spring 30 is compressed until the fixing hook 29 is buckled onto the L-shaped clamping shaft 28, and the reset spring 30 is reset.

[0051] The above-mentioned construction method of a municipal road engineering pavement construction device includes the following specific steps:

[0052] S1, feed the raw materials for the asphalt binder into the mixing drum 5 through the feeding pipe 7, and then fix the cover plate 8 in place;

[0053] S2, the steam generator 1301 is started to deliver hot steam to the space between the heat preservation cylinder and the mixing cylinder;

[0054] S3, the first drive motor 3 starts to rotate forward to drive the insulation cylinder 2 to rotate clockwise through 180°. After the photoelectric sensor 20 at the bottom of the fixed bracket 1201 senses the driven bevel gear 11, the first drive motor 3 starts to rotate reversely to drive the insulation cylinder 2 to rotate counterclockwise through 180°. After the photoelectric sensor 20 at the top of the fixed bracket 1201 senses the driven bevel gear 11, the first drive motor 3 starts to rotate forward again. By repeating the above actions, the mixing cylinder 5 is effectively driven to perform a longitudinal 180° circular arc motion around the axis of the insulation cylinder 2;

[0055] During this process, the second drive motor 1202 is started to drive the stirring shaft 9 to rotate, thereby stirring the material during the heating and turning process, so as to effectively and synchronously heat, turn and stir the material.

[0056] S4, after the material is heated and mixed, the heat preservation cylinder 2 is reset to the upper part of the fixed bracket 1201, and the photoelectric sensor 20 senses the driven helical gear 11, and the first drive motor 3 stops rotating;

[0057] S5, manually pull out the latch 26 by holding the clamp, and then cooperate with the handle 27 on the outside of the sealing plate 4 through the long rod with the hook, so that the sealing plate 4 of the present invention can be effectively opened upward until the fixed hook (29) connected to the sealing plate 4 is buckled onto the L-shaped clamping shaft (28);

[0058] S6, the transport vehicle 1 starts to move forward to perform asphalt binder paving and compaction operations on the corresponding road surface;

[0059] During this process, when the transport vehicle 1 moves forward, the first drive motor 3 starts to rotate forward to drive the insulation cylinder 2 to rotate clockwise by 90°. At the same time, the second drive motor 1202 starts to break up the material to increase the material discharge kinetic energy. After the photoelectric sensor 20 on the right side of the fixed bracket 1201 senses the driven bevel gear 11, the first drive motor 3 starts to rotate backward to drive the insulation cylinder 2 to rotate counterclockwise by 180°. After the photoelectric sensor 20 on the left side of the fixed bracket 1201 senses the driven bevel gear 11, the first drive motor 3 starts to rotate forward again to drive the insulation cylinder 2 to rotate clockwise by 180°. By repeating the above actions, the mixing cylinder 5 is effectively driven to perform a horizontal 180° arc trajectory around the axis of the insulation cylinder 2, and the material is evenly discharged in a state of horizontally uniform distribution.

[0060] S7, the material is evenly distributed horizontally onto the discharging plate 2104 on the lower side of the material spreading hopper 2103. Under the action of the material spreading shaft 2105 and the spiral feeding plate 2106, the thicker material is flattened, thereby further leveling the material.

[0061] S8, the further leveled material enters the blanking plate 22 through the discharging plate 2104, and then falls onto the road surface under the guidance of the blanking plate 22. During this process, the uneven position of the material can be manually trimmed;

[0062] S9, under the traction of the transport vehicle 1, the flattening roller (2102) passes over the road surface paved with asphalt binder to compact the asphalt binder paved on the road surface.

[0063] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A municipal road engineering pavement construction device, characterized by: include A transport vehicle (1), wherein the transport vehicle (1) is provided with a heat-insulating cylinder (2) that can rotate along its axis, the heat-insulating cylinder (2) is driven by a corresponding first drive motor (3), the inner side of the heat-insulating cylinder (2) is closed, and the outer side of the heat-insulating cylinder (2) is provided with a corresponding opening, and a corresponding sealing plate (4) is installed at the opening that can be opened and closed; A mixing barrel (5) is provided with a tilting device inside the heat-insulating barrel (2); a corresponding barrel fixing plate (6) is fixedly connected to the inner side of the mixing barrel (5); a corresponding feeding pipe (7) is connected upwardly to the top of the mixing barrel (5); a feeding end of the feeding pipe (7) extends to the top of the heat-insulating barrel (2) and is detachably mounted with a corresponding cover plate (8); a corresponding stirring shaft (9) is rotatably mounted on the barrel fixing plate (6); the inner end of the stirring shaft (9) extends into the mixing barrel (5) and is fixedly connected to a plurality of corresponding mixing rods (10); the outer end of the stirring shaft (9) extends through the outer side of the heat-insulating barrel (2) and is fixedly connected to a corresponding driven helical gear (11); A stirring drive mechanism (12) comprises a fixed bracket (1201) on a transport vehicle (1) fixedly connected to the inner side of the heat-insulating cylinder (2), and a second drive motor (1202) fixedly connected to the fixed bracket (1201), wherein the output shaft end of the second drive motor (1202) is arranged facing the heat-insulating cylinder (2), and the output shaft of the second drive motor (1202) is located on the axis of the heat-insulating cylinder (2), and the output shaft fixing device of the second drive motor (1202) has a driving helical gear (1203) meshing with the driven helical gear (11), when the heat-insulating cylinder (2) rotates around its axis, the mixing cylinder (5) performs a circular arc motion around the axis of the heat-insulating cylinder (2), and the driven helical gear (11) performs a circular arc motion around the output shaft of the second drive motor (1202) and is driven by the driving helical gear (1203); A material heating mechanism (13) is used to heat the material in the mixing cylinder (5) inside the heat-insulating cylinder (2); The mixing cylinder (5) is tilted inside the heat-insulating cylinder (2) via a set of corresponding support plates (18), and the support plates (18) are provided with a plurality of corresponding air holes (1801); The material heating mechanism (13) comprises a steam generator (1301) and a steam delivery pipe (1302) for delivering hot steam generated by the steam generator (1301) to between the heat preservation cylinder (2) and the mixing cylinder (5); the steam delivery pipe (1302) is connected to the center of the heat preservation cylinder (2) via a corresponding rotary joint (19); The output end of the steam delivery pipe (1302) is arranged on the upper side of the bottom of the heat preservation cylinder (2) at an angle of 15-35 degrees clockwise. Four photoelectric sensors (20) for sensing the driven helical gear (11) are arranged at the upper, lower, left and right ends of the fixed bracket (1201) along the running path of the driven helical gear (11). The first drive motor (3) is a forward and reverse drive motor.

2. A municipal road engineering pavement construction device according to claim 1, characterized in that: The transport vehicle (1) is fixed with a group of spaced fixing seats (14) at positions corresponding to the heat-insulating cylinder (2). The heat-insulating cylinder (2) is rotatably mounted on the fixing seats (14) via corresponding fixed bearings (15). The heat-insulating cylinder (2) is fixed to a corresponding annular rack (16) between the group of fixing seats (14). The bottom of the annular rack (16) is meshedly connected with a driving gear (17) driven by the first driving motor (3).

3. A municipal road engineering pavement construction device according to claim 1, characterized in that: The material spreading and flattening mechanism (21) is further included. The material spreading and flattening mechanism (21) comprises a material spreading frame (2101) that is swingably mounted on the outer end of the transport vehicle (1). The end of the material spreading frame (2101) that is not connected to the transport vehicle (1) is tilted downward and rotatably mounted with a corresponding flattening roller (2102). The inner fixing device of the material spreading frame (2101) has a material spreading guide hopper (2103) that is adapted to the outer end of the mixing barrel (5).

4. A municipal road engineering pavement construction device according to claim 3, characterized in that: The material spreading frame (2101) on the lower side of the material spreading guide hopper (2103) is provided with a corresponding material discharging plate (2104) on a downwardly inclined device, and a plurality of corresponding material spreading shafts (2105) are installed in the material spreading guide hopper (2103) on the upper part of the material discharging plate (2104) for rotation side by side. The material spreading shafts (2105) are respectively provided with spiral feeding plates (2106) for guiding the material, and the adjacent two material spreading shafts (2105) are respectively connected by gear meshing, and one of the material spreading shafts (2105) is connected to the third drive motor (2107) fixed on the outer side of the material spreading frame (2101).

5. A municipal road engineering pavement construction device according to claim 4, characterized in that: The outer end of the discharging spreading plate (2104) is hinged downwardly to a corresponding blanking plate (22), and the end of the blanking plate (22) not hinged to the discharging spreading plate (2104) is connected to both sides of the spreading frame (2101) through a set of corresponding connecting springs (23).

6. A municipal road engineering pavement construction device according to claim 1, characterized in that: The cover plate (8) is detachably mounted to the feed end of the feeding pipe (7) by means of bolt locking, the top of the outer end of the heat-insulating cylinder (2) is fixedly connected to a corresponding first support block (24), the top of the sealing plate (4) is hinged to the first support block (24), the bottom of the outer end of the heat-insulating cylinder (2) is fixedly connected to a corresponding second support block (25), the middle of the second support block (25) is provided with a corresponding fixing groove, the bottom of the sealing plate (4) is provided with a plug-in portion adapted to the fixing groove, and the plug-in portion is fixed to the second support block (25) by a corresponding latch (26).

7. A municipal road engineering pavement construction device according to claim 6, characterized in that: The middle part of the sealing plate (4) is provided with a sealing cone (401) adapted to the outer end of the mixing barrel (5), and the outer bottom of the sealing plate (4) is fixedly connected to a corresponding handle (27) outwardly. When the plug-in portion of the sealing plate (4) is fixed to the second support block (25), the sealing cone (401) is sealed and fixed to the outer end of the mixing barrel (5); the outer end of the first support block (24) extends outward to the outside of the heat preservation barrel (2), and the outer side of the first support block (24) is fixedly connected downwardly to the outer side of the heat preservation barrel (2). An L-shaped clamping shaft (28) is provided, and the upper side of the closing plate (4) is hingedly connected to a corresponding fixing hook (29) in an upward tilt. A corresponding return spring (30) is connected between the upper part of the fixing hook (29) and the closing plate (4). When the closing plate (4) is opened upward, the fixing hook (29) abuts against the L-shaped clamping shaft (28), and the return spring (30) is compressed until the fixing hook (29) is buckled onto the L-shaped clamping shaft (28), and the return spring (30) is reset.

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