A pothole filling device for road and bridge maintenance

Abstract

This invention discloses a pothole filling device for road and bridge maintenance, relating to the field of road maintenance technology. It includes a trolley with a movable plate at its bottom and a moving mechanism on the movable plate. This pothole filling device, through the coordinated operation of the moving mechanism, transmission mechanism, flame gun, air supply mechanism, and asphalt supply mechanism, achieves precise heating and melting of the edges of potholes in asphalt pavement while simultaneously filling them with new asphalt, achieving full coverage filling of the pothole's perimeter. Finally, a first rotating drive component drives a first auger to fill the pothole with asphalt from the mounting box through a first discharge pipe, propelling the trolley forward to complete the internal filling. This process achieves full fusion of old and new asphalt, significantly reducing the risk of cracking at the junction of old and new asphalt, and improving the overall stability and service life of the filled pavement.

Description

Technical Field

[0001] This invention relates to road maintenance technology, specifically to a pothole filling device for road and bridge maintenance. Background Technology

[0002] Roads and bridges are important infrastructure for transportation. During long-term use, asphalt pavements are prone to potholes, cracks and other defects due to factors such as vehicle load, temperature changes and rainwater erosion. This not only affects the comfort and safety of driving, but also accelerates the further damage to the pavement structure. Therefore, it is necessary to fill and repair potholes in a timely manner.

[0003] Currently, pothole filling in road and bridge maintenance mainly relies on manual or simple mechanical methods. In manual filling, workers typically fill the pothole with asphalt mixture, roughly level it with a shovel or scraper, and finally compact it with a roller. However, this method has some drawbacks. During manual filling, there is a significant temperature difference between the newly filled asphalt and the existing old asphalt at the pothole edge. The new asphalt's adhesion to the old asphalt is insufficient during cooling, leading to cracking and detachment at the joint, severely affecting the filling quality and the road surface's service life. Therefore, there is an urgent need for a pothole filling device for road and bridge maintenance that can simultaneously and precisely heat and melt the pothole edge during the filling process, supplying new asphalt and achieving full fusion of the old and new asphalt. Summary of the Invention

[0004] The purpose of this invention is to provide a pothole filling device for road and bridge maintenance, in order to solve the problem that in the prior art, the newly filled asphalt and the original old asphalt at the edge of the pothole are not bonded due to temperature differences, and the joint is prone to cracking and falling off, thus affecting the filling quality and the service life of the road surface.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a pothole filling device for road and bridge maintenance, comprising a push trolley, a movable plate disposed at the bottom of the push trolley, a moving mechanism disposed on the movable plate, the moving mechanism being used to drive the movable plate to move horizontally, a mounting shaft rotatably connected to the bottom of the movable plate, a transmission mechanism connected to the movable plate being driven to the outer surface of the mounting shaft, the transmission mechanism being used to drive the mounting shaft to rotate, a first connecting plate being fixedly connected to the bottom end of the mounting shaft, and a first telescopic drive member being fixedly connected to the bottom of the first connecting plate. A second connecting plate is fixedly connected to the output end of the first telescopic drive component. An air supply pipe is fixedly connected to the second connecting plate. A flame gun is fixedly connected to the outer surface of the air supply pipe through a pipe. An air supply mechanism connected to the pushing trolley is connected to the outer surface of the air supply pipe. The air supply mechanism is used to supply liquefied gas to the air supply pipe. An asphalt spiral feeding pipe is fixedly connected to the second connecting plate. A baffle is fixedly connected to the bottom of the second connecting plate. An asphalt feeding mechanism connected to the second connecting plate is provided at one end of the asphalt spiral feeding pipe. The asphalt feeding mechanism is used to feed material to the asphalt spiral feeding pipe.

[0006] The top of the pusher trolley is fixedly connected to a mounting box, the bottom of the mounting box is fixedly connected to a first discharge pipe, the top of the mounting box is fixedly connected to a first rotation drive component, the output end of the first rotation drive component is fixedly connected to a first transmission shaft, the bottom end of the first transmission shaft is fixedly connected to a first screw rod, and the outer surface of the first transmission shaft is fixedly connected to a plurality of second heating rods.

[0007] Furthermore, the moving mechanism includes a second rotary drive component fixedly connected to the pushing trolley. The output end of the second rotary drive component is fixedly connected to a first threaded rod rotatably connected to the pushing trolley. A transmission box is threadedly fitted on the outer surface of the first threaded rod. A guide rod 1, fixedly connected to the pushing trolley, is slidably connected to the transmission box. A third rotary drive component is fixedly connected to one side of the transmission box. The output end of the third rotary drive component is fixedly connected to a second threaded rod rotatably connected to the transmission box. The outer surface of the second threaded rod is threadedly fitted to a moving plate. A guide rod 2, fixedly connected to the transmission box, is slidably connected to the moving plate.

[0008] Furthermore, the gas supply mechanism includes a liquefied gas tank fixedly connected to the push trolley, and the output end of the liquefied gas tank is connected to the gas supply pipe through a spring hose.

[0009] Furthermore, the asphalt feeding mechanism includes a feeding box fixedly connected to the second connecting plate, a fourth rotating drive component fixedly connected to the feeding box, a second transmission shaft fixedly connected to the output end of the fourth rotating drive component, a second spiral rod fixedly connected to the bottom end of the second transmission shaft, a second discharge pipe fixedly connected to the bottom of the feeding box, the second discharge pipe communicating with the asphalt spiral feeding pipe, a fifth rotating drive component fixedly connected to one side of the asphalt spiral feeding pipe, and a third spiral rod rotatably connected to the output end of the fifth rotating drive component.

[0010] Furthermore, a plurality of first electric heating rods are fixedly connected to the outer surface of the second drive shaft.

[0011] Furthermore, a second telescopic drive component is fixedly connected to the bottom of the second connecting plate, a push plate is fixedly connected to the output end of the second telescopic drive component, and a plurality of push columns are fixedly connected to the bottom of the push plate.

[0012] Furthermore, a third telescopic drive component is fixedly connected to the bottom of the pusher trolley, and a mounting block is fixedly connected to the output end of the third telescopic drive component. A pressure roller is rotatably connected to the mounting block.

[0013] Furthermore, the transmission mechanism includes a sixth rotation drive component fixedly connected to the movable plate. The output end of the sixth rotation drive component is fixedly connected to a drive shaft. A first gear is fixedly sleeved on the outer surface of the drive shaft. A second gear fixedly sleeved on the outer surface of the first gear is meshed with the mounting shaft.

[0014] Compared with the prior art, the pothole filling device for road and bridge maintenance provided by the present invention has the following beneficial effects:

[0015] By setting up a coordinated mechanism including a moving mechanism, a transmission mechanism, a flame gun, an air supply mechanism, and an asphalt supply mechanism, the system achieves precise heating and melting of the edges of potholes in asphalt pavement and simultaneous filling with new asphalt. This effectively solves the problem of cracking and detachment at the junction of old and new asphalt caused by temperature differences and insufficient adhesion in traditional filling methods. Specifically, the first telescopic drive component moves the flame gun downward to heat the edge of the pothole, softening the old asphalt to a molten state. Simultaneously, the fourth and fifth rotary drive components in the asphalt feeding mechanism drive the second and third augers to work together, continuously conveying the asphalt in the feeding box to the edge of the pothole through the second discharge pipe and the asphalt spiral feeding pipe. Under the obstruction of the baffle, the new asphalt fully fuses with the molten old asphalt. The moving mechanism can drive the second connecting plate to move back and forth and left and right, and the transmission mechanism can drive the installation shaft to rotate 90°, achieving full coverage filling of the pothole's edges. Finally, the first rotary drive component drives the first auger to fill the pothole with the asphalt in the installation box through the first discharge pipe, pushing the trolley to complete the internal filling. The entire process achieves full fusion of the new and old asphalt, significantly reducing the risk of cracking at the junction of the new and old asphalt, and improving the overall stability and service life of the road surface after filling.

[0016] By setting a second telescopic drive component for melting, a push plate for melting, and a push column for melting at the bottom of the second connecting plate, and setting a third telescopic drive component for melting and a pressure roller for melting at the bottom of the push trolley, semi-automatic scraping and compaction of the filled asphalt pavement is achieved, effectively solving the problem of secondary damage caused by uneven asphalt surface and uneven compaction after traditional manual filling. Specifically, after the pothole filling material is completed, the moving mechanism drives the second connecting plate to melt and move back and forth and side to side. Simultaneously, the melting of the second telescopic drive component drives the melting of the push plate and the push column to move downwards and insert into the asphalt. The melting of the push column, along with the movement of the melting second connecting plate, scrapes the asphalt in the pothole, making the asphalt surface more even. After scraping, the melting of the third telescopic drive component drives the melting of the pressure roller to move downwards and adhere to the asphalt surface. As the trolley moves forward, the melting of the pressure roller continuously compacts the asphalt, making the filled asphalt tightly bonded to the original road surface, improving the density and smoothness of the filled area. The entire scraping and compaction process does not require manual intervention and can be automatically completed through the linkage of each telescopic drive component and the moving mechanism, which greatly improves the efficiency of maintenance work, reduces labor intensity, and ensures the uniformity of the quality of the filled road surface and its long-term stability. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a first perspective view of the external structure of the present invention;

[0019] Figure 2 This is a second perspective view of the external structure of the present invention;

[0020] Figure 3 This is a third perspective view of the external structure of the present invention;

[0021] Figure 4 This is a perspective view of a portion of the internal structure of the present invention;

[0022] Figure 5 For the present invention Figure 1 A magnified view of A in the middle.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Push trolley; 2. Moving plate; 3. Mounting shaft; 4. First connecting plate; 5. First telescopic drive component; 6. Second connecting plate; 7. Air supply pipe; 8. Flamethrower; 9. Asphalt spiral feed pipe; 10. Baffle; 11. Mounting box; 12. First discharge pipe; 13. First rotation drive component; 14. First transmission shaft; 15. First spiral rod; 16. Second heating rod; 21. Second rotation drive component; 22. First threaded rod; 23. Transmission box; 24. Third rotation drive component; 25. Second threaded rod; 31. Liquefied gas tank; 32. Spring hose; 41. Feed box; 42. Fourth rotary drive component; 43. Second transmission shaft; 44. Second screw rod; 45. Second discharge pipe; 46. Fifth rotary drive component; 47. Third screw rod; 48. First electric heating rod; 51. Second telescopic drive component; 52. Push plate; 53. Push column; 61. Third telescopic drive component; 62. Mounting block; 63. Pressure roller; 71. Sixth rotary drive component; 72. Drive shaft; 73. First gear; 74. Second gear. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0026] Example 1

[0027] Please see Figures 1 to 5As shown, the device includes a pusher trolley 1, a movable plate 2 at its bottom, a moving mechanism on the movable plate 2 for horizontal movement, a mounting shaft 3 rotatably connected to the bottom of the movable plate 2, and a transmission mechanism connected to the movable plate 2 for rotating the mounting shaft 3. A first connecting plate 4 is fixedly connected to the bottom of the mounting shaft 3, and a first telescopic drive member 5 is fixedly connected to the bottom of the first connecting plate 4. The first telescopic drive member 5 is an electric telescopic rod or an electric hydraulic rod. The output end of component 5 is fixedly connected to a second connecting plate 6. An air supply pipe 7 is fixedly connected to the second connecting plate 6. A flame gun 8 is fixedly connected to the outer surface of the air supply pipe 7. An air supply mechanism connected to the push trolley 1 is connected to the outer surface of the air supply pipe 7. The air supply mechanism is used to supply liquefied gas to the air supply pipe 7. An asphalt spiral feeding pipe 9 is fixedly connected to the second connecting plate 6. A baffle 10 is fixedly connected to the bottom of the second connecting plate 6. An asphalt feeding mechanism connected to the second connecting plate 6 is provided at one end of the asphalt spiral feeding pipe 9. The asphalt feeding mechanism is used to feed material to the asphalt spiral feeding pipe 9.

[0028] A mounting box 11 is fixedly connected to the top of the pusher trolley 1. A first discharge pipe 12 is fixedly connected to the bottom of the mounting box 11. A first rotation drive component 13 is fixedly connected to the top of the mounting box 11. The first rotation drive component 13 is a servo motor. The servo motor is controlled by a PLC programming program, which can control the servo motor to rotate forward and backward and rotate at different angles. A first transmission shaft 14 is fixedly connected to the output end of the first rotation drive component 13. A first screw rod 15 is fixedly connected to the bottom end of the first transmission shaft 14. Multiple second heating rods 16 are fixedly connected to the outer surface of the first transmission shaft 14.

[0029] The moving mechanism includes a second rotation drive component 21 fixedly connected to the push trolley 1. The second rotation drive component 21 is a servo motor, which is controlled by a PLC programming program. The servo motor can be controlled to rotate forward and backward and rotate at different angles. The output end of the second rotation drive component 21 is fixedly connected to a first threaded rod 22, which is rotatably connected to the push trolley 1. A transmission box 23 is threaded onto the outer surface of the first threaded rod 22. A guide rod fixedly connected to the push trolley 1 is slidably connected to the transmission box 23. A third rotation drive component 24, which is also a servo motor, is fixedly connected to one side of the transmission box 23. The servo motor can be controlled by PLC programming to rotate forward and backward and rotate at different angles. The output end of the third rotation drive 24 is fixedly connected to a second threaded rod 25 that is rotatably connected to the transmission box 23. The outer surface of the second threaded rod 25 is threadedly engaged with the moving plate 2. A guide rod that is fixedly connected to the transmission box 23 is slidably connected to the moving plate 2. The second rotation drive 21 drives the first threaded rod 22 to rotate, and the first threaded rod 22 drives the transmission box 23 to move back and forth. Then, the third rotation drive 24 drives the second threaded rod 25 to rotate, and the second threaded rod 25 drives the moving plate 2 to move left and right.

[0030] The gas supply mechanism includes a liquefied gas tank 31 fixedly connected to the push trolley 1, and the output end of the liquefied gas tank 31 is connected to the gas supply pipe 7 through a spring hose 32.

[0031] The asphalt feeding mechanism includes a feeding box 41 fixedly connected to the second connecting plate 6. A fourth rotation drive 42, a servo motor, is fixedly connected to the feeding box 41. The servo motor is controlled by a PLC programming program, which can control the forward and reverse rotation and the rotation angle. A second transmission shaft 43 is fixedly connected to the output end of the fourth rotation drive 42. A second screw rod 44 is fixedly connected to the bottom end of the second transmission shaft 43. A second discharge pipe 45 is fixedly connected to the bottom of the feeding box 41 and is connected to the asphalt spiral feeding pipe 9. A fifth rotation drive 46, a servo motor, is fixedly connected to one side of the asphalt spiral feeding pipe 9. The servo motor is controlled by a PLC programming program, which can control the forward and reverse rotation and the rotation angle. The output end of the fifth rotation drive 46 is fixedly connected to... A third spiral rod 47 is rotatably connected to the asphalt spiral feeding pipe 9. Multiple first electric heating rods 48 are fixedly connected to the outer surface of the second drive shaft 43. The second drive shaft 43 is driven to rotate by the fourth rotation drive member 42. The second drive shaft 43 drives the second spiral rod 44 to rotate. The second spiral rod 44 drives the asphalt in the feeding box 41 to be conveyed downwards. Then, it is conveyed to the asphalt spiral feeding pipe 9 through the second discharge pipe 45. At the same time, the third spiral rod 47 in the asphalt spiral feeding pipe 9 is driven to rotate by the fifth rotation drive member 46. The third spiral rod 47 conveys the asphalt that has entered the asphalt spiral feeding pipe 9 out. At the same time, as the second drive shaft 43 rotates, the second drive shaft 43 drives the first electric heating rods 48 to rotate. The first electric heating rods 48 heat the asphalt in the feeding box 41 to prevent the asphalt inside from solidifying.

[0032] The transmission mechanism includes a sixth rotation drive component 71 fixedly connected to the movable plate 2. The sixth rotation drive component 71 is a servo motor, which is controlled by a PLC programming program. The servo motor can be controlled to rotate forward and backward and rotate at different angles. The output end of the sixth rotation drive component 71 is fixedly connected to a drive shaft 72. A first gear 73 is fixedly sleeved on the outer surface of the drive shaft 72. A second gear 74 fixedly sleeved on the outer surface of the first gear 73 is meshed with the mounting shaft 3. The sixth rotation drive component 71 drives the drive shaft 72 to rotate, and the drive shaft 72 drives the mounting shaft 3 to rotate through the first gear 73 and the second gear 74.

[0033] When potholes in the asphalt pavement need to be filled, the trolley 1 is pushed to the top of the pothole. Then, the moving mechanism moves the moving plate 2, which in turn moves the mounting shaft 3, the first connecting plate 4, the first telescopic drive 5, and the second connecting plate 6. The air supply pipe 7 and the flame gun 8 move to the top of the pothole edge. Air is then supplied to the air supply pipe 7 and the flame gun 8 through the liquefied gas tank 31 and the spring hose 32. The flame gun 8 is then ignited. After ignition, the first telescopic drive 5 moves the second connecting plate 6 downwards, causing the flame gun 8 to spray flames into the gap in the pothole, melting the asphalt at its edge. Simultaneously, asphalt is supplied into the asphalt spiral supply pipe 9 through the asphalt supply mechanism. The asphalt then enters the edge of the pothole through the spiral supply pipe 9 and, under the obstruction of the baffle 10, fuses the new asphalt with the heated and melted asphalt at the edge. Finally, the transmission box... 23 moves back and forth to fill the edges. When filling left and right, the installation shaft 3 is rotated by the transmission mechanism. The installation shaft 3 drives the first connecting plate 4, the first telescopic drive 5, and the second connecting plate 6 to rotate, causing the second connecting plate 6, the air supply pipe 7, and the flame gun 8 to rotate 90°. The above actions are repeated to achieve asphalt fusion at the left and right edges. Then, the first rotation drive 13 drives the first transmission shaft 14 to rotate, which in turn drives the first screw rod 15 to rotate. The first screw rod 15 carries the asphalt in the installation box 11 into the first discharge pipe 12, which then discharges it. The first discharge pipe 12 fills the potholes with the asphalt in the installation box 11, while simultaneously pushing the trolley 1 to fill the potholes. This achieves full fusion of the old and new asphalt at the edges of the potholes, reducing the risk of cracking at the subsequent joints and making the filled road surface more stable.

[0034] Example 2

[0035] Based on Example 1, please refer to Figures 2 to 5 As shown, a second telescopic drive member 51 is fixedly connected to the bottom of the second connecting plate 6. The second telescopic drive member 51 is an electric telescopic rod or an electric hydraulic rod. A push plate 52 is fixedly connected to the output end of the second telescopic drive member 51. Multiple push columns 53 are fixedly connected to the bottom of the push plate 52.

[0036] A third telescopic drive component 61 is fixedly connected to the bottom of the pusher trolley 1. A mounting block 62 is fixedly connected to the output end of the third telescopic drive component 61. A pressure roller 63 is rotatably connected to the mounting block 62.

[0037] After the potholes are filled, the moving mechanism drives the second connecting plate 6 to move back and forth and left and right. During the movement, the second telescopic drive 51 drives the push plate 52 and the push column 53 to move downward, so that the push column 53 is inserted into the asphalt. Then, it drives the second connecting plate 6 to move, thereby driving the push plate 52 and the push column 53 to move and scrape the asphalt filled into the pothole. After scraping, the third telescopic drive 61 drives the pressure roller 63 to move downward, so that the pressure roller 63 is in contact with the asphalt in the pothole. Then, by pushing the trolley 1, the asphalt is flattened, thereby realizing the semi-automatic flattening of the filled asphalt.

[0038] Working principle:

[0039] When potholes in asphalt pavement need to be filled, the trolley 1 is first pushed to the top of the pothole. The second rotary drive 21 in the moving mechanism drives the first threaded rod 22 to rotate, causing the transmission box 23 to move the entire second connecting plate 6 assembly back and forth to the top of the pothole edge. At the same time, the third rotary drive 24 drives the second threaded rod 25 to rotate, causing the moving plate 2 and the second connecting plate 6 to move left and right to the appropriate position. Then, liquefied gas is supplied to the gas supply pipe 7 and the flame gun 8 through the liquefied gas tank 31 and the spring hose 32 and ignited. The first telescopic drive 5 drives the second connecting plate 6 to move downward, so that the flame gun 8 can heat and melt the old asphalt by spraying flames on the edge gap of the pothole. At the same time, the fourth rotary drive 42 in the asphalt feeding mechanism drives the second spiral rod 44 to discharge the asphalt in the feeding box 41 through the second discharge pipe. 45 is conveyed into the asphalt spiral feed pipe 9. The fifth rotating drive component 46 drives the third spiral rod 47 to convey the asphalt from the asphalt spiral feed pipe 9 to the edge of the pothole. Under the obstruction of the baffle 10, the new asphalt and the old asphalt that has been heated and melted at the edge are fully integrated. When it is necessary to fill the left and right edges, the sixth rotating drive component 71 drives the drive shaft 72 to rotate. Through the meshing of the first gear 73 and the second gear 74, the mounting shaft 3 drives the entire second connecting plate 6 assembly to rotate 90°. The above actions are repeated to complete the asphalt integration of the left and right edges. Finally, the first rotating drive component 13 drives the first spiral rod 15 to rotate, and the asphalt in the mounting box 11 is discharged into the pothole through the first discharge pipe 12. While pushing the trolley 1 forward, the filling inside the pothole is completed, and the new and old asphalt are fully integrated.

[0040] After the pothole filling material is completed, the moving mechanism drives the second connecting plate 6 to move back and forth and left and right. At the same time, the second telescopic drive 51 drives the push plate 52 and the push column 53 to move downward, so that the push column 53 inserts into the asphalt. As the second connecting plate 6 moves, the push column 53 scrapes the asphalt in the pothole. After the scraping is completed, the third telescopic drive 61 drives the pressure roller 63 to move downward, so that the pressure roller 63 fits against the surface of the asphalt in the pothole. Then, the push trolley 1 is pushed forward. During the movement, the pressure roller 63 rolls and flattens the asphalt, thereby realizing semi-automatic scraping and compaction of the filled asphalt pavement, improving the smoothness and stability of the filled pavement.

[0041] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A pothole filling device for road bridge maintenance, characterized by, The device includes a pusher trolley (1), a movable plate (2) at the bottom of the pusher trolley (1), a moving mechanism on the movable plate (2) for driving the movable plate (2) to move horizontally, a mounting shaft (3) rotatably connected to the bottom of the movable plate (2), a transmission mechanism connected to the movable plate (2) for driving the mounting shaft (3) to rotate, a first connecting plate (4) fixedly connected to the bottom of the mounting shaft (3), a first telescopic drive member (5) fixedly connected to the bottom of the first connecting plate (4), and a second connecting plate (6) fixedly connected to the output end of the first telescopic drive member (5). (6) A gas supply pipe (7) is fixedly connected to the upper part. A flame gun (8) is fixedly connected to the outer surface of the gas supply pipe (7) through a pipe. A gas supply mechanism connected to the push trolley (1) is connected to the outer surface of the gas supply pipe (7). The gas supply mechanism is used to supply liquefied gas to the gas supply pipe (7). An asphalt spiral feed pipe (9) is fixedly connected to the second connecting plate (6). A baffle (10) is fixedly connected to the bottom of the second connecting plate (6). The baffle (10) is located behind the outlet of the asphalt spiral feed pipe (9). An asphalt feeding mechanism connected to the second connecting plate (6) is provided at one end of the asphalt spiral feed pipe (9). The asphalt feeding mechanism is used to feed the asphalt spiral feed pipe (9). The top of the pusher trolley (1) is fixedly connected to a mounting box (11), the bottom of the mounting box (11) is fixedly connected to a first discharge pipe (12), the top of the mounting box (11) is fixedly connected to a first rotating drive (13), the output end of the first rotating drive (13) is fixedly connected to a first transmission shaft (14), the bottom end of the first transmission shaft (14) is fixedly connected to a first screw rod (15), and the outer surface of the first transmission shaft (14) is fixedly connected to a plurality of second heating rods (16).

2. The pothole filling device for road and bridge maintenance according to claim 1, characterized in that, The moving mechanism includes a second rotating drive (21) fixedly connected to the push trolley (1). The output end of the second rotating drive (21) is fixedly connected to a first threaded rod (22) rotatably connected to the push trolley (1). The outer surface of the first threaded rod (22) is threadedly fitted with a transmission box (23). A guide rod one fixedly connected to the push trolley (1) is slidably connected to the transmission box (23). A third rotating drive (24) is fixedly connected to one side of the transmission box (23). The output end of the third rotating drive (24) is fixedly connected to a second threaded rod (25) rotatably connected to the transmission box (23). The outer surface of the second threaded rod (25) is threadedly fitted to a moving plate (2). A guide rod two fixedly connected to the transmission box (23) is slidably connected to the moving plate (2).

3. The pothole filling device for road and bridge maintenance according to claim 1, characterized in that, The gas supply mechanism includes a liquefied gas tank (31) fixedly connected to the push trolley (1), and the output end of the liquefied gas tank (31) is connected to the gas supply pipe (7) through a spring hose (32).

4. The pothole filling device for road and bridge maintenance according to claim 1, characterized in that, The asphalt feeding mechanism includes a feeding box (41) fixedly connected to the second connecting plate (6). A fourth rotating drive (42) is fixedly connected to the feeding box (41). A second transmission shaft (43) is fixedly connected to the output end of the fourth rotating drive (42). A second screw rod (44) is fixedly connected to the bottom end of the second transmission shaft (43). A second discharge pipe (45) is fixedly connected to the bottom of the feeding box (41). The second discharge pipe (45) is connected to the asphalt spiral feeding pipe (9). A fifth rotating drive (46) is fixedly connected to one side of the asphalt spiral feeding pipe (9). A third screw rod (47) is fixedly connected to the output end of the fifth rotating drive (46) and is rotatably connected to the asphalt spiral feeding pipe (9).

5. The pothole filling device for road and bridge maintenance according to claim 4, characterized by Multiple first electric heating rods (48) are fixedly connected to the outer surface of the second drive shaft (43).

6. The pothole filling device for road and bridge maintenance according to claim 1, characterized by, The bottom of the second connecting plate (6) is fixedly connected to a second telescopic drive member (51), and the output end of the second telescopic drive member (51) is fixedly connected to a push plate (52). The bottom of the push plate (52) is fixedly connected to a plurality of push columns (53).

7. The pothole filling device for road and bridge maintenance according to claim 1, characterized in that, The bottom of the pusher trolley (1) is fixedly connected to a third telescopic drive member (61), and the output end of the third telescopic drive member (61) is fixedly connected to a mounting block (62). A pressure roller (63) is rotatably connected to the mounting block (62).

8. A pothole filling device for road and bridge maintenance according to claim 1, characterized in that, The transmission mechanism includes a sixth rotation drive (71) fixedly connected to the moving plate (2). The output end of the sixth rotation drive (71) is fixedly connected to a drive shaft (72). A first gear (73) is fixedly sleeved on the outer surface of the drive shaft (72). A second gear (74) is fixedly sleeved on the outer surface of the first gear (73).

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