An asphalt pavement joint treatment machine

Abstract

This invention discloses an asphalt pavement joint treatment machine, belonging to the technical field of road construction equipment. It includes: a support frame, a front-end seat fixedly connected to the front of the support frame, a traveling wheel movably connected to the bottom of the front end of the front end seat, and a caster wheel movably connected to the bottom of the rear end of the support frame; an asphalt tank fixedly installed on the top of the support frame, used for storing asphalt and discharging it to the pavement joint; a pressure-adjusting mechanism installed on the support frame and located behind the asphalt tank; and a cleaning mechanism installed at the bottom of the front end seat, which rotates and cleans as the traveling wheel rolls. This invention can automatically clean the pavement joint area while repairing it using the movement of the support frame, improving the cleanliness of the pavement joint and preventing residual impurities from affecting the quality of the asphalt filling, thereby improving the efficiency and quality of pavement joint repair work.

Description

Technical Field

[0001] This invention relates to the field of road construction equipment technology, and in particular to an asphalt pavement joint treatment machine. Background Technology

[0002] When constructing asphalt pavement, if the time interval between the asphalt paving on both sides of the pavement is too long, a joint is easily formed at the junction of the two paving sides. The existence of the joint not only affects the appearance of the pavement, but also affects the quality of the asphalt pavement and shortens its lifespan. The pavement joint treatment machine is one of the devices used for repairing pavement joints, and it can complete the repair of asphalt pavement joints.

[0003] In the existing technology, road joint treatment machines generally consist of a frame, an asphalt tank, and a rolling structure. The movement of the frame drives the asphalt tank and the rolling structure to move above the road joint. During the movement, the heated asphalt in the asphalt tank flows into the road joint, and then the rolling structure is used to repair the road joint.

[0004] Currently used road joint treatment machines have limited space under the frame, so they generally do not have sweeping brushes installed underneath. Instead, cleaning is done separately by a sweeping device before the treatment machine starts working. However, in actual operation, the working interval between the treatment machine and the sweeping machine is relatively long, making it difficult to maintain the cleanliness of the road joint area and affecting the quality of subsequent joint repair work. Furthermore, due to the limited space under the frame of current road joint treatment machines, it is difficult to install sweeping brushes, and the regular cleaning of the sweeping brushes is also difficult, making it difficult to meet the usage requirements. Therefore, an asphalt road joint treatment machine is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide an asphalt pavement joint treatment machine to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an asphalt pavement joint treatment machine, comprising:

[0007] A load-bearing frame, wherein a headstock is fixedly connected to the front end of the load-bearing frame, a driving wheel is movably connected to the bottom front end of the headstock, and a caster wheel is movably connected to the bottom rear end of the load-bearing frame;

[0008] An asphalt tank is fixedly installed on the top of the vehicle frame. The asphalt tank is used for storing asphalt and discharging it to the road joints.

[0009] A compaction mechanism is installed on the support frame and located behind the asphalt tank. The compaction mechanism is used for rolling at the road joints.

[0010] The cleaning mechanism is installed at the bottom of the front seat and can rotate and clean as the wheels roll.

[0011] Preferably, the cleaning mechanism includes:

[0012] A horizontal shaft body is fixed to the inside of the front seat. A hollow cover that can rotate around the outer wall of the horizontal shaft body is fitted on the outer wall of the horizontal shaft body. A plurality of telescopic holes are spaced apart on the annular side wall of the hollow cover. A telescopic brush body is provided in each of the plurality of telescopic holes.

[0013] The irregularly shaped disk is set inside the hollow cover. The irregularly shaped disk is fixedly connected to the outer wall of the horizontal shaft. The bottom side wall of the irregularly shaped disk is arc-shaped and the top side wall is arc-shaped. The brush body can move along the side wall of the irregularly shaped disk while the hollow cover rotates.

[0014] The cleaning comb claw is located above the hollow cover. One end of the cleaning comb claw extends downward along the arc of the side wall of the hollow cover. The cleaning comb claw is used to comb and remove impurities from the brush body.

[0015] Preferably, a detachable T-shaped connecting rod is fixedly connected to one end of the brush body facing the irregularly shaped disc. The T-shaped connecting rod is wider at the top and narrower at the bottom, and an elastic compression spring is fixedly connected between the T-shaped connecting rod and the hollow cover.

[0016] Preferably, the top of the T-shaped connecting rod is convex, and a rotatable auxiliary roller is movably connected to the top of the T-shaped connecting rod. The outer wall of the auxiliary roller can fit against the side wall of the irregularly shaped disk, and a hollow sleeve that is fixedly connected to the inner wall of the hollow cover is movably sleeved on the outer wall of the T-shaped connecting rod.

[0017] Preferably, the hollow cover has a cross-shaped cross section, and both ends of the hollow cover are fixedly connected to a first transmission gear. A second transmission gear, which is coaxially fixed to the traveling wheel, is provided below the headstock. The side wall of the second transmission gear meshes with the side wall of the first transmission gear.

[0018] Preferably, a fixing frame is fixedly connected to the rear end of the cleaning comb claw, and a jet head is fixedly installed in the middle of the fixing frame. Multiple air nozzles are fixedly installed at intervals from top to bottom on the side of the jet head facing the cleaning comb claw. The multiple air nozzles are inclined downward and connected to the inside of the jet head. An air supply mechanism is provided below the head seat and behind the hollow cover. The air supply mechanism is used to continuously supply gas into the jet head.

[0019] Preferably, the air supply mechanism includes two spaced-apart exhaust cylinders. Each exhaust cylinder has an air outlet and an air inlet on the side away from the hollow cover. A three-way connector is provided between the exhaust cylinder and the jet head. The three ends of the three-way connector are fixedly connected to the air inlet of the jet head and the air outlet of the exhaust cylinder through flexible hoses. One-way valves are installed at the air inlet and air outlet on the side wall of the exhaust cylinder. A piston shaft is movably connected to the inside of the exhaust cylinder, with one end of the piston shaft extending toward the hollow cover.

[0020] Preferably, both outer walls of the hollow cover are fixedly connected with irregularly shaped tracks. The irregularly shaped tracks have an elliptical channel on the side away from the hollow cover. The end of the piston shaft away from the exhaust cylinder is fixedly connected with a limiting shaft. One end of the limiting shaft extends into the interior of the elliptical channel, and a mounting groove is opened at the position of the limiting shaft facing the inner wall of the elliptical channel. An auxiliary ball is movably connected in the mounting groove. The outer wall of the auxiliary ball protrudes from the mounting groove and can contact the inner wall of the elliptical channel.

[0021] Preferably, the pressing mechanism includes a concave bracket fixedly connected to the top of the support frame. The concave bracket is located on the side of the asphalt tank away from the front seat. The inner side of the concave bracket is provided with a roller cover that can be vertically raised and lowered along the inner wall of the concave bracket. A pressure roller is rotatably connected to the inner side of the roller cover. An I-shaped connecting rod is movably connected to the top of the roller cover through a convex through groove. An elastic compression spring is fixedly connected between the I-shaped connecting rod and the roller cover 303. A lifting screw is threadedly connected to the middle of the top of the concave bracket. The bottom end of the lifting screw extends to the inner side of the concave bracket and is rotatably connected to the top of the I-shaped connecting rod.

[0022] Preferably, a discharge cover is fixedly connected to the side of the roller cover facing the cleaning mechanism. The discharge cover is inclined downward and communicates with the inner and outer sides of the roller cover. A scraper seat that can fit against the outer wall of the roller cover is fixedly connected to the side of the discharge cover facing the inner side of the roller cover. Limiting seats are fixedly connected to both side walls of the discharge cover. A guide rod is movably inserted into the middle of the limiting seat. Fixed seats are fixedly connected between the two ends of the guide rod and the inner wall of the roller cover. An elastic compression spring is movably sleeved on the outer wall of the guide rod. The two ends of the elastic compression spring are fixedly connected to the opposite side of the limiting seat and the fixed seat at the corresponding position.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] (1) The present invention can automatically clean the road joints while using the movement of the support frame to repair the road joints, thereby improving the cleanliness of the road joints and avoiding residual impurities from affecting the quality of asphalt filling the road joints, thus improving the work efficiency and work quality of road joint repair.

[0025] (2) The present invention provides multiple elastically extendable brush bodies at intervals on the arc sidewall of the hollow cover in the cleaning mechanism, and utilizes the hollow cover to rotate around the irregular disc, so that the brush bodies automatically extend and retract as the arc of the sidewall of the irregular disc changes. When the brush body rotates to the downward direction, it automatically extends and unfolds to clean, and when it rotates to the upward direction, it automatically retracts and stores. This reduces the space occupied by the cleaning mechanism in the vertical direction, making it more suitable for installation under the head seat. At the same time, the cleaning comb claws above the hollow cover can clean when the brush body retracts, achieving the purpose of self-cleaning.

[0026] (3) The present invention has an air nozzle installed on the fixing frame for fixing the cleaning comb claw. Then, through the irregular track with elliptical channel configured on the outer wall of both sides of the hollow cover, the hollow cover rotates while the irregular track and the limiting shaft drive the piston shaft in the two exhaust cylinders to form an alternating push-pull action, so that the intake and exhaust actions on the two exhaust cylinders alternate. Then, by using the one-way valve configured on the air inlet and air outlet of the exhaust cylinder, the two exhaust cylinders can continuously deliver gas to the air nozzle through the three-head pipe, so that the nozzle continuously blows air to clean the lint, broken leaves and other impurities on the cleaning comb claw, ensuring the quality of continuous use of the cleaning comb claw. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0028] Figure 2 This is a three-dimensional structural diagram of the cleaning mechanism of the present invention.

[0029] Figure 3 This is a side cross-sectional view of the disc cover of the present invention.

[0030] Figure 4 For the present invention Figure 3 A magnified schematic diagram of the structure at point A.

[0031] Figure 5 For the present invention Figure 2 A magnified schematic diagram of the structure at point B.

[0032] Figure 6 This is a partial three-dimensional structural diagram of the drive seat of the present invention.

[0033] Figure 7 This is a front cross-sectional view of the rolling mechanism of the present invention.

[0034] Figure 8 This is a partial three-dimensional structural diagram of the scraping mechanism of the present invention.

[0035] In the diagram: 100, load-bearing frame; 101, front seat; 102, running wheels; 103, swivel wheels;

[0036] 200. Cleaning mechanism; 201. Horizontal shaft; 202. Hollow cover; 203. Irregularly shaped disc; 204. Telescopic hole; 205. Brush body; 206. Hollow sleeve; 207. T-shaped connecting rod; 208. Elastic compression spring one; 209. Auxiliary roller; 210. Transmission gear one; 211. Transmission gear two; 212. Cleaning comb claw; 213. Fixing frame; 214. Irregularly shaped track; 215. Piston shaft; 216. Exhaust cylinder body; 217. Three-way connector; 218. Jet nozzle; 219. Air nozzle; 220. Limiting shaft; 221. Mounting groove; 222. Auxiliary ball bearing;

[0037] 300. Pressing mechanism; 301. Concave bracket; 302. Pressure roller; 303. Roller cover; 304. Lifting screw; 305. I-shaped connecting rod; 306. Elastic spring II; 307. Convex through groove; 308. Unloading cover; 309. Scraper seat; 310. Limiting seat; 311. Guide rod; 312. Fixed seat; 313. Elastic spring III;

[0038] 400. Asphalt tank. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] This invention provides, for example Figure 1-8The asphalt pavement joint treatment machine shown includes a support frame 100, an asphalt tank 400 fixedly installed on the top of the support frame 100, a pressing mechanism 300 installed on the support frame 100 and located behind the asphalt tank 400, and a cleaning mechanism 200 installed at the bottom of a cab 101. The cab 101 is fixedly connected to the front end of the support frame 100. The top and bottom of the cab 101 have inwardly recessed grooves to facilitate the installation of the structure and the placement of items. A traveling wheel 102 is movably connected to the bottom front end of the cab 101. The traveling wheels 102 are fixed wheels, capable of only rolling and without directional adjustment, maintaining stable movement. A swivel caster 103 is movably connected to the rear bottom of the support frame 100. The swivel caster 103, located behind the support frame 100, assists in movement and facilitates directional adjustment. The asphalt tank 400 is used for storing asphalt and discharging it to road joints. The asphalt tank 400 has an openable and closable top cover and a discharge pipe at its bottom, equipped with a valve to control its opening and closing. In a preferred embodiment... The valve can be an electrically controlled valve, such as a solenoid valve or other existing valves that meet the requirements; the pressure mechanism 300 is used for rolling at the road joint, and the cleaning mechanism 200 can rotate and sweep along with the traveling wheels 102; the support frame 100 can move along the road joint through the cooperation of the traveling wheels 102 and the casters 103. The cleaning mechanism 200, which is located in front of the support frame 100, cleans the impurities at the road joint during the movement, keeping the joint clean. Then the asphalt tank 400 delivers the heated asphalt... The bulk asphalt is discharged into the road joint. Finally, as the supporting frame 100 continues to move, it drives the compaction mechanism 300 to move and compact the asphalt at the road joint, thereby repairing the road joint. Since the cleaning mechanism 200 is directly located in front of the asphalt tank 400, asphalt can be directly discharged into the road joint after cleaning. The short interval can effectively prevent external impurities from accidentally entering the clean road joint, thereby reducing the impact of impurities in the road joint on asphalt repair and improving the quality of the repair work.

[0041] It should be noted that the cleaning mechanism 200 includes a horizontal shaft 201 fixed to the inner side of the headstock 101, a shaped disc 203 disposed inside the hollow cover 202, and a cleaning comb 212 disposed above the hollow cover 202. The outer wall of the horizontal shaft 201 is fitted with a hollow cover 202 that can rotate around the outer wall of the horizontal shaft 201. The annular sidewall of the hollow cover 202 is provided with a plurality of telescopic holes 204 spaced apart. Each telescopic hole 204 is provided with a telescopic brush body 205. In this embodiment, the brush body 205 is preferably flat strip-shaped, which not only has a wider cleaning width, but also cooperates better with the subsequently configured cleaning comb 212, which can help improve the cleaning comb 212's cleaning of the brush body 205. The cleaning effect is achieved by fixing the irregularly shaped disc 203 to the outer wall of the horizontal shaft 201. The bottom sidewall of the irregularly shaped disc 203 is arc-shaped, and the top sidewall is curved. The brush body 205 moves along the sidewall of the irregularly shaped disc 203 as the hollow cover 202 rotates. Since the outer wall of the irregularly shaped disc 203 facing upwards is not a complete arc, and the distance from the circular shape of the arc-shaped outer wall of the irregularly shaped disc 203 gradually increases from the center to both sides, and the junction of the arc-shaped and curved positions on the irregularly shaped disc 203 uses a large rounded corner transition, the shape characteristics of the outer wall of the irregularly shaped disc 203 can be utilized, combined with the fixed position of the irregularly shaped disc 203. As the hollow cover 202 rotates counterclockwise, the brush body 205 is driven by the shaped disc 203 to rotate downwards from a vertically upward position, gradually extending out of the hollow cover 202. It remains extended when it reaches the arc-shaped position of the shaped disc 203, allowing for cleaning of road joints. When the hollow cover 202 moves the brush body 205 from the arc-shaped position of the shaped disc 203 to the arc-shaped position, the brush body 205 gradually retracts into the hollow cover 202, achieving proper storage and reducing the space required above the hollow cover 202 during installation. This improves installation adaptability. The cleaning comb 212 extends downward along the arc of the side wall of the hollow cover 202. The cleaning comb 212 is used to comb and remove impurities from the brush body 205. The arc of the cleaning comb 212 matches the arc of the outer wall of the hollow cover 202, so that the brush body 205 moves from the downward direction to the upward direction and gradually retracts. During this process, the bristles of the brush body 205 interweave and contact with the cleaning comb 212, so that the cleaning comb 212 combs the brush body 205 and removes easily sticky impurities such as lint, broken leaves or hair on the brush body 205. After a cycle of extending and sweeping and retracting, the brush body 205 can remain neat and clean to ensure the quality of subsequent reuse.

[0042] It should be further explained that a detachable T-shaped connecting rod 207 is fixedly connected to one end of the brush body 205 facing the irregularly shaped disk 203. The T-shaped connecting rod 207 is wider at the top and narrower at the bottom, and an elastic compression spring 208 is fixedly connected between the T-shaped connecting rod 207 and the hollow cover 202. The T-shaped connecting rod 207, in conjunction with the elastic compression spring 208, enables the automatic retraction of the brush body 205. Combined with the lifting drive of the irregularly shaped disk 203, this allows for the automatic extension and retraction of the brush body 205 as it moves along the irregularly shaped disk 203. Furthermore, the ends of the brush body 205 and the T-shaped connecting rod 207 can be detachably fixed using a snap-fit ​​or bolt connection. When the brush body 205 is in the fully extended position on the hollow cover 202, it facilitates the individual replacement of the brush body 205, making subsequent maintenance more flexible and convenient. Moreover, the T-shaped connecting rod 207 can be configured with an adjustable length. For example, the T-shaped connecting rod 207 is designed as a two-section telescopic structure, and the part connected to the brush body 205 is equipped with a locking structure with a one-button unlocking function, which can achieve the purpose of adjusting the length of the T-shaped connecting rod 207. This allows the brush body 205 to adjust the extension length according to specific usage needs, making it more adaptable and better meeting usage requirements. The top of the T-shaped connecting rod 207 is convex, and a rotatable auxiliary roller 209 is movably connected to the top of the T-shaped connecting rod 207. The outer wall of the auxiliary roller 209 can fit against the side wall of the irregular disc 203. The auxiliary roller 209 can reduce the frictional resistance between the auxiliary roller 209 and the irregular disc 203, making the movement of the brush body 205 smoother. A hollow sleeve 206 is movably sleeved on the outer wall of the T-shaped connecting rod 207 and fixedly connected to the inner wall of the hollow cover 202. The hollow sleeve 206 can limit and guide the T-shaped connecting rod 207 and the brush body 205, making the extension and retraction process of the brush body 205 more stable.

[0043] Meanwhile, a fixed frame 213 is fixedly connected to the rear end of the cleaning comb 212. A jet head 218 is fixedly installed in the middle of the fixed frame 213. Multiple air nozzles 219 are fixedly installed at intervals from top to bottom on the side of the jet head 218 facing the cleaning comb 212. The multiple air nozzles 219 are inclined downward and connected to the inside of the jet head 218. An air supply mechanism is provided below the head seat 101 and behind the hollow cover 202. The air supply mechanism is used to continuously supply gas into the jet head 218. The gas is then sprayed out from the air nozzles 219. With the shape and air outlet angle of the air nozzles 219, the outer wall of the cleaning comb 212 can be cleaned more comprehensively. The impurities cleaned off the brush body 205 by the cleaning comb 212 can be blown away by the gas, thus achieving the purpose of cleaning. Preferably, the air nozzles 219 can be pressurized air nozzles, so that the sprayed gas has a certain pressure, which can improve the effect of blowing dust. In a preferred embodiment, the air supply mechanism includes two spaced-apart exhaust cylinders 216. Each exhaust cylinder 216 has an air outlet and an air inlet on the side facing away from the hollow cover 202. A three-way connector 217 is provided between the exhaust cylinder 216 and the jet nozzle 218. Each of the three ports of the three-way connector 217 is fixedly connected to the air inlet of the jet nozzle 218 and the air outlet of the exhaust cylinder 216 via flexible hoses. One-way valves are installed at the air inlet and air outlet on the sidewall of the exhaust cylinder 216. A piston shaft 215 is movably connected to the inner side of the exhaust cylinder 216. One end of the piston shaft 215 extends toward the hollow cover 202. One-way valves are installed at the air outlet and air inlet positions on the end face of the exhaust cylinder 216, so that the exhaust cylinder 216 can only exhaust from the air outlet and can only enter from the air inlet, avoiding the gas discharged from the air outlet from being sucked back from the air outlet. In this way, the two exhaust cylinders 216 can perform staggered push-pull actions to realize the continuous gas delivery operation in the jet head 218.

[0044] Further explanation of the gas supply mechanism is needed. Both outer walls of the hollow cover 202 are fixedly connected to irregularly shaped tracks 214. The side of the track 214 facing away from the hollow cover 202 has an elliptical channel with an axially symmetrical structure. An object moving from one end of the elliptical channel to the other completes a reciprocating cycle. Furthermore, the irregularly shaped tracks 214 on both sides of the hollow cover 202 have a 90-degree installation angle difference. The track 214 on one side of the hollow cover 202 is horizontal, while the track 214 on the other side is vertical. This allows for the staggered push-pull drive of the two piston shafts 215. A limiting shaft 2 is fixedly connected to the end of the piston shaft 215 away from the exhaust pipe 216. 20. One end of the limiting shaft 220 extends into the interior of the elliptical channel, and an installation groove 221 is provided at the position of the limiting shaft 220 facing the inner wall of the elliptical channel. An auxiliary ball 222 is movably connected in the installation groove 221. The outer wall of the auxiliary ball 222 protrudes from the installation groove 221 and can contact the inner wall of the elliptical channel. A ball sleeve can also be installed in the installation groove 221. By using the contact between the auxiliary ball 222 and the inner wall of the elliptical channel, frictional resistance is reduced and the smoothness of movement is improved. In this embodiment, the hollow cover 202 rotates while driving the irregular track 214 to rotate. During the rotation of the irregular track 214, the piston shaft 215 is driven to perform a cyclic push-pull action through the limiting shaft 220 and the auxiliary ball 222. Each rotation of the irregular track 214 by 180 degrees constitutes one cycle.

[0045] In some embodiments, the hollow cover 202 has a cross-shaped cross section, and both ends of the hollow cover 202 are fixedly connected to a transmission gear 210. A transmission gear 211 is provided below the headstock 101 and is coaxially fixed with the traveling wheel 102. The side wall of the transmission gear 211 meshes with the side wall of the transmission gear 210. In this embodiment, when the traveling wheel 102 rolls clockwise and drives the supporting frame 100 to move forward, the transmission action between the transmission gear 211 and the transmission gear 210 can drive the hollow cover 202 on the horizontal shaft 201 to rotate counterclockwise. In this way, the brush body 205 on it can achieve the cleaning action of the road surface joint. At the same time, the rolling of the traveling wheel 102 can be used as the driving force for the rotation of the hollow cover 202, achieving energy saving. In another embodiment, an electric motor and transmission assembly can be directly installed on the headstock 101 to drive the hollow cover 202, depending on the usage requirements.

[0046] In a preferred embodiment, the pressing mechanism 300 includes a concave bracket 301 fixedly connected to the top of the support frame 100. The concave bracket 301 is located on the side of the asphalt tank 400 away from the front seat 101. A roller cover 303, which can vertically rise and fall along the inner wall of the concave bracket 301, is provided inside the concave bracket 301. A linear lifting guide structure, such as a slide rail and slider, can be configured between the roller cover 303 and the concave bracket 301 to limit and guide the roller cover 303 during the lifting process, making the height adjustment of the roller cover 303 more stable. A pressure roller 302 is rotatably connected to the inner side of the roller cover 303. An I-shaped connecting rod 305 is movably connected to the top of the roller cover 303 through a convex through-slot 307. An elastic compression spring 306 is fixedly connected between the I-shaped connecting rod 305 and the roller cover 303. A lifting screw 304 is threadedly connected to the top center of 301. The bottom end of the lifting screw 304 extends to the inner side of the concave bracket 301 and is rotatably connected to the top of the I-shaped connecting rod 305. In this embodiment, the roller cover 303 and the pressure roller 302 exert downward pressure on the road surface due to the elastic compression action of the second elastic spring 306, thereby improving the rolling quality. At the same time, the height can be adjusted by rotating the lifting screw 304 on the concave bracket 301. In conjunction with the I-shaped connecting rod 305, the roller cover 303 can be raised and lowered in the convex through groove 307 at the top of the roller cover 303, thereby adjusting the compression deformation of the second elastic spring 306 in the initial state, thus achieving the pressure provided to the pressure roller 302, further improving the quality of the pressure roller 302 in pressing the road surface joints, and making the pressure roller 302 more adaptable.

[0047] Next, a discharge cover 308 is fixedly connected to the side of the roller cover 303 facing the cleaning mechanism 200. The discharge cover 308 is inclined downward and communicates with the inner and outer sides of the roller cover 303. A scraper seat 309 that can fit against the outer wall of the roller cover 303 is fixedly connected to the side of the discharge cover 308 facing the inner side of the roller cover 303. The surfaces of the discharge cover 308 and the scraper seat 309 are both smooth surfaces, and the smoothness can be increased by spraying paint. The two side walls of the discharge cover 308 are fixedly connected to... A limit seat 310 is connected to the roller cover 303. A guide rod 311 is movably inserted into the middle of the limit seat 310. Fixed seats 312 are fixedly connected between the two ends of the guide rod 311 and the inner wall of the roller cover 303. An elastic compression spring 313 is movably sleeved on the outer wall of the guide rod 311. The two ends of the elastic compression spring 313 are fixedly connected to the opposite side of the limit seat 310 and the fixed seat 312 at the corresponding positions. The cooperation of the fixed seat 312, the elastic compression spring 313, the guide rod 311 and the limit seat 310 is described. In use, the discharge cover 308 and the scraper seat 309 can exert a thrust towards the outer wall of the pressure roller 302, allowing the side wall of the scraper seat 309 to fit tightly against the outer wall of the pressure roller 302. Simultaneously, the tilt angle setting during the installation of the guide rod 311 ensures that the side wall of the scraper seat 309 remains tangent to the outer wall of the pressure roller 302. This allows the scraper seat 309 to scrape off the asphalt adhering to the surface of the pressure roller 302 during its rotation back to the initial position after the pressure roller 302 has completed its compression against the road surface. The scraped asphalt then slides down the slope of the discharge cover 308 towards the road surface in front of the pressure roller 302, allowing it to be further compressed and leveled by the pressure roller 302. This not only maintains the quality of the pressure roller 302 but also avoids material waste. The inner width of the discharge cover 308 gradually narrows from the direction closer to the pressure roller 302 towards the direction further away from it, serving as a material collection function and making the asphalt discharge position more accurate.

[0048] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An asphalt pavement joint treatment machine, characterized in that, include: A support frame (100) is fixedly connected to a head seat (101) at the front end of the support frame (100), a traveling wheel (102) is movably connected to the bottom of the front end of the head seat (101), and a caster wheel (103) is movably connected to the bottom of the rear end of the support frame (100). An asphalt tank (400) is fixedly installed on the top of the support frame (100), the asphalt tank (400) being used for storing asphalt and discharging it to the road joints; A compaction mechanism (300) is mounted on the support frame (100) and located behind the asphalt tank (400). The compaction mechanism (300) is used for rolling at the road joints. A cleaning mechanism (200) is installed at the bottom of the front seat (101). The cleaning mechanism (200) can rotate and clean as the walking wheel (102) rolls. The cleaning mechanism (200) includes: A horizontal shaft (201) is fixed to the inside of the headstock (101). The outer wall of the horizontal shaft (201) is fitted with a hollow cover (202) that can rotate around the outer wall of the horizontal shaft (201). The annular sidewall of the hollow cover (202) is provided with a plurality of telescopic holes (204) spaced apart. Each of the plurality of telescopic holes (204) is provided with a telescopic brush body (205). The irregularly shaped disk (203) is set inside the hollow cover (202). The irregularly shaped disk (203) is fixedly connected to the outer wall of the horizontal shaft body (201). The bottom side wall of the irregularly shaped disk (203) is arc-shaped, and the top side wall is arc-shaped. The brush body (205) can move along the side wall of the irregularly shaped disk (203) while the hollow cover (202) rotates. The cleaning comb (212) is located above the hollow cover (202). One end of the cleaning comb (212) extends downward along the arc of the side wall of the hollow cover (202). The cleaning comb (212) is used to comb and remove impurities from the brush body (205).

2. The asphalt pavement joint treatment machine according to claim 1, characterized in that, The brush body (205) is fixedly connected to a detachable T-shaped connecting rod (207) at one end facing the irregular disc (203). The T-shaped connecting rod (207) is wider at the top and narrower at the bottom, and an elastic compression spring (208) is fixedly connected between the T-shaped connecting rod (207) and the hollow cover (202).

3. The asphalt pavement joint treatment machine according to claim 2, characterized in that, The top of the T-shaped connecting rod (207) is convex, and a rotatable auxiliary roller (209) is movably connected to the top of the T-shaped connecting rod (207). The outer wall of the auxiliary roller (209) can fit against the side wall of the irregular disc (203). The outer wall of the T-shaped connecting rod (207) is movably fitted with a hollow sleeve (206) that is fixedly connected to the inner wall of the hollow cover (202).

4. The asphalt pavement joint treatment machine according to claim 2, characterized in that, The hollow cover (202) has a cross-shaped cross section, and both ends of the hollow cover (202) are fixedly connected to a first transmission gear (210). A second transmission gear (211) is provided below the headstock (101) and is coaxially fixed with the walking wheel (102). The side wall of the second transmission gear (211) meshes with the side wall of the first transmission gear (210).

5. An asphalt pavement joint treatment machine according to claim 2, characterized in that, A fixed frame (213) is fixedly connected to the rear end of the cleaning comb (212). A jet head (218) is fixedly installed in the middle of the fixed frame (213). Multiple air nozzles (219) are fixedly installed at intervals from top to bottom on the side of the jet head (218) facing the cleaning comb (212). The multiple air nozzles (219) are inclined downward and connected to the inside of the jet head (218). An air supply mechanism is provided below the head seat (101) and behind the hollow cover (202). The air supply mechanism is used to continuously supply gas into the jet head (218).

6. The asphalt pavement joint treatment machine according to claim 5, characterized in that, The air supply mechanism includes two spaced-apart exhaust cylinders (216). Each exhaust cylinder (216) has an air outlet and an air inlet on the side away from the hollow cover (202). A three-way connector (217) is provided between the exhaust cylinder (216) and the jet head (218). The three ports of the three-way connector (217) are fixedly connected to the air inlet of the jet head (218) and the air outlet of the exhaust cylinder (216) through flexible hoses. One-way valves are installed at the air inlet and air outlet on the side wall of the exhaust cylinder (216). A piston shaft (215) is movably connected to the inside of the exhaust cylinder (216). One end of the piston shaft (215) extends toward the hollow cover (202).

7. An asphalt pavement joint treatment machine according to claim 6, characterized in that, Both sides of the hollow cover (202) are fixedly connected to irregularly shaped tracks (214). The irregularly shaped tracks (214) have an elliptical channel on the side away from the hollow cover (202). The piston shaft (215) is fixedly connected to a limiting shaft (220) at the end away from the exhaust cylinder (216). One end of the limiting shaft (220) extends into the elliptical channel, and the limiting shaft (220) has an installation groove (221) at the position opposite to the inner wall of the elliptical channel. An auxiliary ball (222) is movably connected in the installation groove (221). The outer wall of the auxiliary ball (222) protrudes from the installation groove (221) and can contact the inner wall of the elliptical channel.

8. An asphalt pavement joint treatment machine according to claim 1, characterized in that, The pressure regulating mechanism (300) includes a concave bracket (301) fixedly connected to the top of the support frame (100). The concave bracket (301) is located on the side of the asphalt tank (400) away from the head seat (101). The inner side of the concave bracket (301) is provided with a roller cover (303) that can be vertically raised and lowered along the inner wall of the concave bracket (301). The inner side of the roller cover (303) is rotatably connected to a pressure roller (302). The top of the roller cover (303) is movably connected to an I-shaped connecting rod (305) through a convex through groove (307). An elastic compression spring (306) is fixedly connected between the I-shaped connecting rod (305) and the roller cover (303). The top center of the concave bracket (301) is threadedly connected to a lifting screw (304). The bottom end of the lifting screw (304) extends to the inner side of the concave bracket (301) and is rotatably connected to the top of the I-shaped connecting rod (305).

9. An asphalt pavement joint treatment machine according to claim 8, characterized in that, A discharge cover (308) is fixedly connected to the side of the roller cover (303) facing the cleaning mechanism (200). The discharge cover (308) is inclined downward and communicates with the inner and outer sides of the roller cover (303). A scraper seat (309) that can fit against the outer wall of the roller cover (303) is fixedly connected to the side of the discharge cover (308) facing the inner side of the roller cover (303). Limit seats (310) are fixedly connected to both sides of the discharge cover (308). A guide rod (311) is movably inserted into the middle of the limit seat (310). Fixed seats (312) are fixedly connected between the two ends of the guide rod (311) and the inner wall of the roller cover (303). An elastic compression spring (313) is movably sleeved on the outer wall of the guide rod (311). The two ends of the elastic compression spring (313) are fixedly connected to the opposite side of the limit seat (310) and the fixed seat (312) at the corresponding positions.

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