A road maintenance device

Abstract

The application belongs to the technical field of road maintenance, and particularly relates to a road maintenance device, which comprises a base frame, rotatingly connected with rollers at both ends of the base frame, a repairing device arranged on the upper surface of the base frame near the left end, a heating device arranged on the right side of the repairing device, and a motor arranged on the right side of the heating device. The repairing device comprises: a feeding frame fixedly connected to the upper end of the base frame, and used for placing thermoplastic plastic for repairing road pits and depressions; and a feeding pipe arranged at the lower end of the feeding frame and communicated with the feeding frame. The thermoplastic plastic for filling road pits and depressions is connected with the heating device to form a device, and the device is movable. After the raw material filling in the road pits and depressions is completed, rapid heating treatment can be realized, and the leveling plate arranged below the device can scrape the raw material during the raw material filling, so that the raw material is prevented from overflowing and waste of the raw material is avoided.

Description

Technical Field

[0001] This invention belongs to the field of road maintenance technology, specifically a road maintenance device. Background Technology

[0002] As the number of vehicles increases and the roads age, various defects such as cracks and potholes will appear on the roads. These defects may pose a threat to driving safety. Through road maintenance, these defects can be detected and repaired in a timely manner, providing a safe road environment for drivers and pedestrians.

[0003] A patent application with publication number CN114775395A discloses an automatic pothole filling and repair device for roads and bridges. The device includes a repair vehicle body and a loading chamber inside the vehicle body. The bottom surface of the loading chamber is designed with an inclined structure. The loading chamber is used to fill cement slurry. A fixed box is fixedly connected to the lower side of the loading chamber. This device enables the cement slurry to flow out at a specific point. Because the cement slurry only flows out to the pothole and not onto the intact road surface, it not only avoids waste of cement slurry, but also allows workers to simply control the repair vehicle body to drive over the pothole to achieve the purpose of repairing and filling the pothole, saving workers' time and labor.

[0004] The above solution still has some problems in practical application. If this device is used to fill small potholes on the road, since the pothole filler is not cement but a thermoplastic, it needs to be heated when filling the pothole. During the heating process, the adhesive in the thermoplastic will combine with the asphalt of the road to achieve road repair. However, since the device is not equipped with a heat treatment device, the heating needs to be carried out separately. Moreover, thermoplastic is a lightweight material. If it is not heated in time, the thermoplastic in the pothole may be blown away by the wind, resulting in economic losses.

[0005] Therefore, the present invention provides a road maintenance device. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: A road maintenance device of the present invention includes a base frame, with rollers rotatably connected to both ends of the base frame. A repair device is provided on the upper surface of the base frame near the left side, and a heating device is provided on the right side of the repair device. A motor is provided on the right side of the heating device. The repair device includes: a feeding frame, which is fixedly connected to the upper end of the base frame, and the interior of the feeding frame is used to place thermoplastic plastic for repairing road potholes; a conveying pipe, which is located at the lower end of the feeding frame and is connected to the feeding frame, with a baffle at the lower opening of the conveying pipe; and a leveling plate, which is slidably connected to the bottom of the base frame and is located below the conveying pipe. The heating device includes: a heating head, which is located at the bottom of the base frame near the leveling plate.

[0008] Preferably, the heating device further includes: a fixed frame, which is fixedly connected to the upper end of the base frame near the feed frame; a gas cylinder, which is installed inside the fixed frame and connected to the heating head; a second rotating shaft, which is fixedly connected to the inside of the base frame; a rotating disk, which is rotatably connected to one end of the second rotating shaft; an auxiliary circular block, which is disposed on the surface of the rotating disk and is located away from the position of the second rotating shaft; a first rotating shaft, which is fixedly connected to the inside of the base frame near the end of the second rotating shaft; and an arc-shaped gear plate, which rotates... A movable connection is made to the arc surface of the first rotating shaft; a movable groove is formed on the surface of the arc-shaped gear plate, and an auxiliary circular block slides on the inner wall of the movable groove, with the auxiliary circular block initially located at the upper end of the movable groove; a connecting plate is provided on the flat plate near the arc-shaped gear plate; a swing plate is fixedly connected to one end of the connecting plate and meshes with the arc-shaped gear plate; a second connecting arm is rotatably connected to both sides of the swing plate; a first connecting arm is rotatably connected inside the base frame near the second rotating shaft; and a connecting shaft has the first and second connecting arms sleeved on its arc surface.

[0009] Preferably, the feed frame is rotatably connected to a worm gear, and one end of the worm gear extends into the inside of the feed pipe.

[0010] Preferably, a positioning block is provided on one side of the lower end of the conveying pipe, and an extension tube is sleeved on the arc surface of the lower end of the conveying pipe. A sliding groove is provided on the inner wall of the extension tube, and the positioning block slides on the inner wall of the sliding groove. In the initial state, the positioning block is located at the upper end of the inner wall of the sliding groove.

[0011] Preferably, a limiting gear is rotatably connected to one end of the base frame near the feed frame, and a lifting plate is slidably connected to one end of the base frame near the limiting gear. A rack is provided on one side of the lifting plate, and the rack meshes with the limiting gear. A limiting cone is fixedly connected to the lower end of the lifting plate, and the limiting cone is flush with the lower surface of the base frame in the initial state.

[0012] Preferably, a lifting frame is fixedly connected to one side of the feed frame, a lifting plate is slidably connected inside the lifting frame, a tension spring is connected to the upper end of the lifting plate, and the tension spring is in a taut state in the initial state. A sensor is provided on the lower surface of the base frame near the end of the limiting gear, and a fixed rod is slidably connected inside the sensor. The sensor is used to control the movement of the fixed rod, and the fixed rod moves inside the limiting gear.

[0013] Preferably, the limiting cone is inclined toward the end of the base frame away from the feed frame.

[0014] Preferably, each side of the base frame near the heating head is fixedly connected to a snap-fit ​​shaft, and the arc surface of the snap-fit ​​shaft is fixedly connected to a splash guard.

[0015] Preferably, the upper end of the fixed frame is fixedly connected to several fixed shafts, and the arc surface of the fixed shaft is rotatably connected to a fixed plate, and the fixed plate is "L" shaped and contacts the gas cylinder.

[0016] Preferably, the surfaces of several of the fixing plates are provided with anti-slip pads, and the anti-slip pads are in contact with the sidewalls of the gas cylinder.

[0017] The beneficial effects of this invention are as follows:

[0018] 1. The road maintenance device of the present invention connects the thermoplastic filling material for road potholes with a heating device into a single device, and is designed to be movable. This allows for rapid heating after the material filling is completed, and the flat plate located below the device will scrape the material during filling to prevent overflow and waste.

[0019] 2. The road maintenance device of the present invention, by incorporating sensors and a limiting cone, allows the limiting cone located inside the device to automatically pop out after the device is moved to the location where pothole filling is needed. This causes the limiting cone to contact the ground. Because the limiting cone is angled, the force between the device and the road surface is increased when the limiting cone contacts the road surface, allowing the device to be fixed in place and thus enabling more stable pothole filling.

[0020] 3. The road maintenance device of the present invention, by setting a fixing plate and an anti-slip pad, since the gas canister is a consumable and needs to be replaced frequently when the thermoplastic is heated, when the gas canister is placed inside the fixing frame, it will contact the plate below the fixing plate, thereby causing the fixing plate to rotate around the fixing axis. Finally, the plate above the fixing plate will contact the side wall of the gas canister, and finally abut against the gas canister. The anti-slip pad on the surface of the fixing plate will also reduce the friction between the fixing plate and the gas canister, thereby better fixing the gas canister. Attached Figure Description

[0021] The invention will now be further described with reference to the accompanying drawings.

[0022] Figure 1 This is a perspective view of Embodiment 1 of the present invention;

[0023] Figure 2 This is a partial view of Embodiment 1 of the present invention;

[0024] Figure 3 This is a bottom view of Embodiment 1 of the present invention;

[0025] Figure 4 yes Figure 3 Enlarged view of a portion of point A in the middle;

[0026] Figure 5 yes Figure 3 Enlarged view of a section at point B in the middle;

[0027] Figure 6 This is an internal view of the feed frame of the present invention;

[0028] Figure 7 This is a perspective view of the material conveying pipe and the extension pipe of the present invention;

[0029] Figure 8 yes Figure 7 Enlarged view of a section at point C;

[0030] Figure 9 This is a connection diagram of the lifting plate and the lifting frame of the present invention;

[0031] Figure 10 This is a partial view of the heating device of the present invention;

[0032] Figure 11 This is a connection diagram of the arc-shaped gear plate and the flat plate of the present invention;

[0033] Figure 12 This is a diagram showing the connection between the fixing frame and the gas cylinder of the present invention;

[0034] In the diagram: 1. Base frame; 2. Repair device; 201. Feed frame; 202. Lifting plate; 203. Limiting cone; 204. Limiting gear; 205. Lifting frame; 206. Sensor; 207. Conveying pipe; 208. Flat plate; 209. Worm gear; 210. Extension pipe; 211. Sliding groove; 212. Positioning block; 213. Tension spring; 214. Rack; 215. Fixing rod; 3. Heating device; 301. Fixing frame; 302. Anti- 303. Splash plate; 304. Heating head; 305. Connecting plate; 306. Rotating disk; 307. Auxiliary round block; 308. Moving groove; 309. First rotating shaft; 310. Swing plate; 311. Second rotating shaft; 312. Snap-fit ​​shaft; 313. Fixed shaft; 314. Arc-shaped gear plate; 315. First connecting arm; 316. Second connecting arm; 317. Connecting shaft; 318. Fixed plate; 319. Anti-slip mat; 310. Gas cylinder; 4. Motor; 5. Roller. Detailed Implementation

[0035] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments. Example 1

[0036] like Figures 1 to 3 As shown, a road maintenance device according to an embodiment of the present invention includes a base frame 1, with rollers 5 rotatably connected to both ends of the base frame 1. A repair device 2 is provided on the upper surface of the base frame 1 near the left end, and a heating device 3 is provided on the right side of the repair device 2. A motor 4 is provided on the right side of the heating device 3. The repair device 2 includes: a feeding frame 201, which is fixedly connected to the upper end of the base frame 1, and the interior of the feeding frame 201 is used to place thermoplastic plastic for repairing road potholes; a conveying pipe 207, which is located at the lower end of the feeding frame 201 and is connected to the feeding frame 201, with a baffle at the lower opening of the conveying pipe 207; and a leveling plate 208, which is slidably connected to the bottom of the base frame 1 and is located below the conveying pipe 207. The heating device 3 includes: a heating head 303, which is located at the bottom of the base frame 1 near the leveling plate 208.

[0037] Specifically, pothole repair is an important part of road maintenance. It involves filling and repairing damaged parts of the road surface, such as potholes and cracks, to restore the road's smoothness and usability. Current pothole repair methods involve placing a filling device on the pothole, filling material such as cement or asphalt mixture inside the device, and then activating the device to allow the material to fall into the pothole. After filling, the material is processed to integrate with the road surface. However, this method is only suitable for larger potholes. Smaller potholes are typically repaired using thermoplastics. Thermoplastics are placed in the pothole and heated periodically, causing the binder within the thermoplastic to bond with the asphalt, thus repairing the road. While this method is quick, thermoplastics are generally lightweight, and if not processed promptly... Heating the material can cause the thermoplastic to be blown away by the wind. Therefore, in existing technology, potholes are usually covered before heating. However, this increases the work cycle, and if the pothole is in a critical part of the road, it can also affect traffic. To address this, the thermoplastic is placed inside the feed box 201, which is located on top of the base frame 1. When potholes need to be filled, thermoplastic is simply added to the feed box 201, and then the base frame 1 is pushed. Since the lower left side of the base frame 1 has 360° rotating rollers 5, the base frame 1 can be moved easily. When the base frame 1 moves the feed box 201 to the pothole, the baffle at the lower opening of the conveying pipe 207 is opened, and the thermoplastic will fall down through the conveying pipe 207. At this time, the leveling plate 208 is activated, and the leveling plate 208 will move along the... Figure 11 The flattening plate 208, which is mounted on several small rollers, swings along the trajectory indicated by the arrow. When the thermoplastic falls from the conveying pipe 207, it will first fall onto the surface of the flattening plate 208, and then fall into the potholes through the gaps between the rollers on the surface of the flattening plate 208. Since the lower opening of the conveying pipe 207 is close to the bottom surface of the roller 5, the thermoplastic will fall into the pothole more smoothly. The flattening plate 208 can also smooth the thermoplastic in the pothole through continuous movement. Then, when the pothole is full of thermoplastic, the base frame 1 can be pushed forward, so that the heating head 303 moves to the upper end of the pothole. The heating head 303 is activated to heat the thermoplastic, so that the adhesive in the thermoplastic combines with the asphalt of the road, thereby achieving road repair. Then, the base frame 1 can be moved by pushing it, thereby achieving faster pothole filling work.

[0038] like Figures 1 to 11As shown, the heating device 3 further includes: a fixed frame 301, which is fixedly connected to the upper end of the base frame 1 near the feed frame 201; a gas cylinder 319, which is installed inside the fixed frame 301 and connected to the heating head 303; a second rotating shaft 310, which is fixedly connected to the inside of the base frame 1; a rotating disk 305, which is rotatably connected to one end of the second rotating shaft 310; an auxiliary circular block 306, which is disposed on the surface of the rotating disk 305 and is positioned away from the position of the second rotating shaft 310; a first rotating shaft 308, which is fixedly connected to the inside of the base frame 1 near the end of the second rotating shaft 310; and an arc-shaped gear plate 313, which is rotatably connected to the first rotating shaft 308. The moving shaft 308 has an arcuate surface; a moving groove 307 is formed on the surface of the arcuate gear plate 313, and an auxiliary circular block 306 slides on the inner wall of the moving groove 307. The auxiliary circular block 306 is initially located at the upper end of the moving groove 307; a connecting plate 304 is provided on one end of the flat plate 208 near the arcuate gear plate 313; a swing plate 309 is fixedly connected to one end of the connecting plate 304, and the swing plate 309 meshes with the arcuate gear plate 313; a second connecting arm 315 is rotatably connected to both sides of the swing plate 309; a first connecting arm 314 is rotatably connected to one end of the base frame 1 near the second rotating shaft 310; and a connecting shaft 316 has the first connecting arm 314 and the second connecting arm 315 sleeved on its arcuate surface.

[0039] Specifically, when the thermoplastic material falls from the feed pipe 207, the rotating disk 305 is activated to rotate. The auxiliary circular block 306 on the surface of the rotating disk 305 will also be driven, moving downwards along the inner wall of the moving groove 307. At this time, the arc-shaped gear plate 313 will oscillate around the first rotating shaft 308. Since the arc-shaped gear plate 313 meshes with the oscillating plate 309, it will move along with the oscillating plate 309. After the rotating disk 305 rotates half a revolution, the auxiliary circular block 306 will... Moving upward along the moving groove 307, the arc-shaped gear plate 313 will also move in the opposite direction. Finally, the arc-shaped gear plate 313 will drive the flat plate 208 to swing through the connecting plate 304, thereby smoothing the thermoplastic. After the thermoplastic fills the pothole, the base frame 1 can be pushed forward, so that the heating head 303 moves to the upper end of the road pothole. Then, the gas tank 319 inside the fixed frame 301 is connected to the heating head 303. Starting the heating head 303 can heat the thermoplastic, and finally complete the filling of the road pothole.

[0040] like Figure 6As shown, a worm gear 209 is rotatably connected inside the feed frame 201, and one end of the worm gear 209 extends into the inside of the feed pipe 207.

[0041] Specifically, since thermoplastic plastic is placed inside the feed frame 201, a worm gear 209 is installed inside the feed frame 201. When the baffle at the lower opening of the conveying pipe 207 is opened, the worm gear 209 is started to rotate. The worm gear 209 will drive the thermoplastic plastic to move downward, so that the thermoplastic plastic can be transferred more quickly and avoid blockage caused by the thermoplastic plastic.

[0042] like Figures 7 to 8 As shown, a positioning block 212 is provided on one side of the lower end of the conveying pipe 207. An extension pipe 210 is sleeved on the arc surface of the lower end of the conveying pipe 207. A sliding groove 211 is provided on the inner wall of the extension pipe 210, and the positioning block 212 slides on the inner wall of the sliding groove 211. In the initial state, the positioning block 212 is located at the upper end of the inner wall of the sliding groove 211.

[0043] Specifically, because the lower opening of the conveying pipe 207 is close to the bottom surface of the roller 5, the thermoplastic will fall more smoothly into the pothole. However, if the road surface is uneven, the base frame 1 will tilt, resulting in a certain distance between the bottom of the conveying pipe 207 and the road surface. This will cause the thermoplastic to deviate when it falls from the inside of the conveying pipe 207. Therefore, an extension pipe 210 is provided on the arc surface of the conveying pipe 207. When the distance between the bottom of the conveying pipe 207 and the road surface is large, simply pull the extension pipe 210. Since the positioning block 212 at the lower end of the conveying pipe 207 slides on the inner wall of the sliding groove 211, the extension pipe 210 can extend the length of the conveying pipe 207, thereby shortening the distance between the bottom of the conveying pipe 207 and the road surface.

[0044] like Figures 1 to 9 As shown, a limiting gear 204 is rotatably connected to one end of the surface of the base frame 1 near the feed frame 201, and a lifting plate 202 is slidably connected to one end of the surface of the base frame 1 near the limiting gear 204. A rack 214 is provided on one side of the lifting plate 202, and the rack 214 meshes with the limiting gear 204. A limiting cone 203 is fixedly connected to the lower end of the lifting plate 202, and the limiting cone 203 is flush with the lower surface of the base frame 1 in the initial state.

[0045] Specifically, when it is necessary to fill potholes in the road, since the base frame 1 can be moved by the rollers 5, after the base frame 1 moves to the designated position, the limit gear 204 is activated to rotate. Since the limit gear 204 meshes with the rack 214, the limit gear 204 will drive the lifting plate 202 to move downward during the rotation, so that the limit cone 203 contacts the ground and fixes the base frame 1, so that the base frame 1 no longer moves, thus allowing for more stable pothole filling.

[0046] like Figures 1 to 9 As shown, a lifting frame 205 is fixedly connected to one side of the feed frame 201. A lifting plate 202 is slidably connected inside the lifting frame 205. A tension spring 213 is connected to the upper end of the lifting plate 202. The tension spring 213 is in a taut state in the initial state. A sensor 206 is provided on the lower surface of the base frame 1 near the end of the limiting gear 204. A fixed rod 215 is slidably connected inside the sensor 206. The sensor 206 is used to control the movement of the fixed rod 215. The fixed rod 215 moves inside the limiting gear 204.

[0047] Specifically, after the base frame 1 moves to the designated position, the sensor 206 at the lower end of the base frame 1 is an infrared distance sensor. The sensor 206 will emit infrared rays towards the road surface and receive the reflected infrared signals to measure the distance. When the distance changes significantly, it indicates that there is a pothole at that location. The sensor 206 will then transmit the signal to the fixed rod 215. The fixed rod 215 will move away from the limiting gear 204, allowing the limiting gear 204 to be released from the constraint of the fixed rod 215 and rotate. Since the tension spring 213 above the lifting plate 202 is initially taut, the limiting gear 204 can rotate at this time. Therefore, the tension spring 213 will release its elasticity, ultimately pushing the lifting plate 202 downward, so that the limiting cone 203 contacts the ground and fixes the base frame 1.

[0048] like Figures 1 to 9 As shown, the limiting cone 203 is tilted toward the end of the base frame 1 away from the feed frame 201.

[0049] Specifically, since some road surfaces are made of hard materials, the base frame 1 cannot be fixed by simply relying on the contact between the limiting cone 203 and the road surface. Therefore, the limiting cone 203 is set to be inclined. When the limiting cone 203 contacts the road surface, it can increase the force between the base frame 1 and the road surface, so that the base frame 1 can be fixed better.

[0050] like Figures 1 to 10As shown, both sides of the base frame 1 are fixedly connected to the end near the heating head 303 with a snap-fit ​​shaft 311, and the arc surface of the snap-fit ​​shaft 311 is fixedly connected to a splash guard 302.

[0051] Specifically, by setting splash guards 302 on both sides of the base frame 1, when the heating head 303 heats the thermoplastic, the heat source can be blocked to prevent the heat source from causing harm to nearby workers. Example 2

[0052] like Figures 1 to 12 As shown in the first embodiment, another embodiment of the present invention is as follows: a plurality of fixed shafts 312 are fixedly connected to the upper end of the fixed frame 301, and a fixed plate 317 is rotatably connected to the arc surface of the fixed shaft 312, and the fixed plate 317 is "L" shaped and contacts the gas cylinder 319.

[0053] Specifically, since energy is required from the gas cylinder 319 when heating thermoplastics, the gas cylinder 319 is a consumable and needs to be replaced frequently. Therefore, a fixing plate 317 is installed inside the fixing frame 301, and the fixing plate 317 is "L" shaped. When the gas cylinder 319 is placed inside the fixing frame 301, it will contact the plate below the fixing plate 317, causing the fixing plate 317 to rotate around the fixing shaft 312. Finally, the plate above the fixing plate 317 will contact the side wall of the gas cylinder 319, thus abutting the gas cylinder 319. This method not only fixes the gas cylinder 319 but also facilitates its replacement.

[0054] like Figure 12 As shown, the surfaces of several fixing plates 317 are provided with anti-slip pads 318, and the anti-slip pads 318 are in contact with the side wall of the gas cylinder 319.

[0055] Specifically, since the gas cylinder 319 will abut against the gas cylinder 319 when it is placed inside the fixed frame 301, an anti-slip pad 318 is provided at the end of the fixed plate 317 near the gas cylinder 319 to reduce the friction between the fixed plate 317 and the gas cylinder 319, thereby better fixing the gas cylinder 319.

[0056] Working principle: When potholes need to be filled, thermoplastic is added inside the feed frame 201, and then the base frame 1 is pushed. Since the lower left side of the base frame 1 has a 360° rotatable roller 5, the base frame 1 can be easily moved. When the base frame 1 moves the feed frame 201 to the pothole, the sensor 206 transmits a signal to the fixing rod 215. The fixing rod 215 then moves away from the limiting gear 204, causing the limiting gear 204 to disengage. The lifting plate 202 is released from its restraint by the fixed rod 215 and can rotate. Since the tension spring 213 above the lifting plate 202 is initially taut, the limiting gear 204 can rotate, causing the tension spring 213 to release its elasticity. This pushes the lifting plate 202 downwards, causing the limiting cone 203 to contact the ground and fix the base frame 1. The baffle at the lower opening of the conveying pipe 207 is then opened, allowing the thermoplastic plastic to fall downwards through the conveying pipe 207. At this point, the rotating disk 305 is activated to rotate. The auxiliary circular block 306 located on the surface of the rotating disk 305 will also be driven, and the auxiliary circular block 306 will move downward along the inner wall of the moving groove 307. At this time, the arc-shaped gear plate 313 will swing around the first rotating shaft 308 as the center. Since the arc-shaped gear plate 313 meshes with the swing plate 309, the arc-shaped gear plate 313 will move together with the swing plate 309. After the rotating disk 305 rotates half a revolution, the auxiliary circular block 306 will move upward along the moving groove 307, and the arc-shaped gear plate 313 will also move upward. Moving in the opposite direction, the final arc-shaped gear plate 313 will also drive the flat plate 208 to swing through the connecting plate 304, thereby smoothing the thermoplastic. After the thermoplastic fills the pothole, the base frame 1 can be pushed forward, so that the heating head 303 moves to the top of the pothole. The gas canister 319 inside the fixed frame 301 is connected to the heating head 303. The heating head 303 can be started to heat the thermoplastic, and finally the pothole filling work is completed. Then, the base frame 1 can be moved by pushing it.

[0057] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A road maintenance device, characterized in that: Includes a base frame (1), with rollers (5) rotatably connected to both ends of the base frame (1), a repair device (2) is provided on the upper surface of the base frame (1) near the left end, a heating device (3) is provided on the right side of the repair device (2), and a motor (4) is provided on the right side of the heating device (3). The repair device (2) includes: The feed frame (201) is fixedly connected to the upper end of the base frame (1), and the inside of the feed frame (201) is used to place thermoplastic plastic for repairing road potholes; The conveying pipe (207) is located at the lower end of the feed frame (201) and is connected to the feed frame (201). A baffle is provided at the lower opening of the conveying pipe (207). A flat plate (208) is slidably connected to the bottom of the base frame (1) and is located below the conveying pipe (207); The heating device (3) includes: Heating head (303), the heating head (303) is located at the bottom of the base frame (1) near one end of the flat plate (208); The heating device (3) also includes: A fixed frame (301) is fixedly connected to the upper end of the base frame (1) near the feed frame (201); A gas cylinder (319) is installed inside a fixed frame (301) and is connected to a heating head (303); The second rotating shaft (310) is fixedly connected to the inside of the base frame (1); A rotating disk (305) is rotatably connected to one end of a second rotating shaft (310); An auxiliary circular block (306) is disposed on the surface of the rotating disk (305), and the position of the auxiliary circular block (306) is far away from the position of the second rotating shaft (310); The first rotating shaft (308) is fixedly connected to one end of the base frame (1) near the second rotating shaft (310); Arc-shaped gear plate (313), said arc-shaped gear plate (313) is rotatably connected to the arc surface of the first rotating shaft (308); The movable groove (307) is formed on the surface of the arc-shaped gear plate (313), and the auxiliary circular block (306) slides on the inner wall of the movable groove (307). The auxiliary circular block (306) is located at the upper end of the movable groove (307) in the initial state. A connecting plate (304) is provided at one end of the flat plate (208) near the arc-shaped gear plate (313); A swing plate (309) is fixedly connected to one end of a connecting plate (304), and the swing plate (309) meshes with an arc-shaped gear plate (313); The second connecting arm (315) is rotatably connected to both sides of the swing plate (309); The first connecting arm (314) is rotatably connected to one end of the base frame (1) near the second rotating shaft (310); A connecting shaft (316) is provided, and a first connecting arm (314) and a second connecting arm (315) are fitted on the arc surface of the connecting shaft (316).

2. The road maintenance device according to claim 1, characterized in that: The feed frame (201) is rotatably connected to a worm gear (209), and one end of the worm gear (209) extends into the inside of the feed pipe (207).

3. A road maintenance device according to claim 2, characterized in that: A positioning block (212) is provided on one side of the lower end of the conveying pipe (207). An extension pipe (210) is fitted on the arc surface of the lower end of the conveying pipe (207). A sliding groove (211) is provided on the inner wall of the extension pipe (210), and the positioning block (212) slides on the inner wall of the sliding groove (211). In the initial state, the positioning block (212) is located at the upper end of the inner wall of the sliding groove (211).

4. A road maintenance device according to claim 1, characterized in that: The end of the base frame (1) near the feed box (201) is rotatably connected to a limiting gear (204). The end of the base frame (1) near the limiting gear (204) is slidably connected to a lifting plate (202). A rack (214) is provided on one side of the lifting plate (202), and the rack (214) meshes with the limiting gear (204). The lower end of the lifting plate (202) is fixedly connected to a limiting cone (203), and the limiting cone (203) is flush with the lower surface of the base frame (1) in the initial state.

5. A road maintenance device according to claim 1, characterized in that: Both sides of the base frame (1) near the heating head (303) are fixedly connected to a snap-fit ​​shaft (311), and the arc surface of the snap-fit ​​shaft (311) is fixedly connected to a splash guard (302).

6. A road maintenance device according to claim 1, characterized in that: The upper end of the fixed frame (301) is fixedly connected to several fixed shafts (312), and the arc surface of the fixed shafts (312) is rotatably connected to a fixed plate (317), and the fixed plate (317) is "L" shaped, and the fixed plate (317) is in contact with the gas cylinder (319).

7. A road maintenance device according to claim 6, characterized in that: The surfaces of several of the fixing plates (317) are provided with anti-slip pads (318), and the anti-slip pads (318) are in contact with the side wall of the gas cylinder (319).

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