Road crack pouring equipment for road repair

Abstract

The invention relates to the technical field of road crack pouring equipment, in particular to road crack pouring equipment for road repairing, which comprises a vehicle body, a push handle fixed on the vehicle body, a front wheel and a rear wheel rotatably arranged at the front end and the rear end of the vehicle body respectively, a heat preservation tank fixed on the vehicle body, and a nozzle head arranged at the bottom of the vehicle body and used for crack pouring. The nozzle head is driven by a lifting device arranged on the vehicle body to move up and down; a spiral feeding mechanism used for conveying a joint filling material in the heat preservation tank into the nozzle head is arranged on the vehicle body and comprises a spiral feeding bin fixed to the vehicle body, a rotating shaft is rotationally arranged in the spiral feeding bin, a propeller is fixed to the rotating shaft, one end of the spiral feeding bin communicates with the heat preservation tank through a feeding hose, and the other end of the spiral feeding bin communicates with the nozzle head through a discharging hose. The device solves the problems that for special structures such as deep and narrow cracks or expansion joints, traditional equipment is prone to insufficient crack pouring or material accumulation, and repairing durability is affected.

Description

Technical Field

[0001] The invention relates to the technical field of road caulking equipment, in particular to a road caulking equipment for road repair. Background Art

[0002] Road cracks are a common form of disease on asphalt or concrete pavements, caused by factors such as temperature stress, vehicle load, and material aging. If cracks are not repaired in time, water will penetrate into the base layer, which will accelerate structural damage, leading to secondary diseases such as potholes and looseness, seriously affecting the service life of the road and driving safety. At present, grouting technology has become the mainstream process for crack repair due to its low cost, high efficiency, and strong adaptability. However, traditional grouting equipment still has significant defects in construction quality, material utilization, and intelligence level.

[0003] In the early days, road crack repair mostly relied on manual operations. Workers used handheld glue injection guns or simple pouring tools to fill the cracks. This method has the following problems: 1. The manual filling speed is slow and it is difficult to meet the maintenance needs of large-scale road networks; 2. The filling depth and width depend on the workers' experience, and it is easy to have incomplete filling or material overflow; 3. In the high-temperature asphalt or sealant working environment, operators are prone to contact with high-temperature materials and there is a risk of burns; 4. Manual control of the output volume can easily lead to excessive use of materials and increase maintenance costs.

[0004] In order to improve efficiency, semi-automatic caulking machines have appeared on the market, such as the asphalt caulking machine disclosed in patent CN107829358A, which is usually composed of a heating silo, a hydraulic pump and a pouring pipe or a handheld spray gun. Although this type of equipment has partially realized the mechanization of material heating and transportation, it still has obvious shortcomings: the stability of caulking relying on manual handheld pouring pipes or spray guns is not high, especially for special structures such as deep and narrow cracks or expansion joints. The equipment is prone to insufficient caulking or material accumulation, affecting the durability of the repair. For this reason, we provide a road caulking equipment for road repair to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to provide a road grouting equipment for road repair, so as to solve the problem that the semi-automatic grouting machine proposed in the above background technology relies on manual handheld spray guns for grouting, which is not stable. Especially for special structures such as deep and narrow cracks or expansion joints, the equipment is prone to insufficient grouting or material accumulation, affecting the durability of the repair.

[0006] To achieve the above object, the present invention provides the following technical solutions: A road crack filling device for road repair comprises a vehicle body, a push handle is fixed on the vehicle body, front wheels and rear wheels are rotatably arranged at the front and rear ends of the vehicle body respectively, a heat preservation tank is fixed on the vehicle body, a nozzle head for crack filling is arranged at the bottom of the vehicle body, and the nozzle head can be moved up and down by being driven by a lifting device arranged on the vehicle body; A screw feeding mechanism for conveying the caulking material inside the heat preservation tank to the inside of the nozzle head is provided on the vehicle body. The screw feeding mechanism includes a screw feeding bin fixed on the vehicle body. A rotating shaft is rotatably arranged in the screw feeding bin. A screw propeller is fixed on the rotating shaft. One end of the screw feeding bin is communicated with the heat preservation tank through a feeding hose, and the other end is communicated with the nozzle head through a discharging hose. The rotating shaft and the rear wheel are cooperated through a linkage structure. When the rear wheel rotates, it will drive the rotating shaft to rotate synchronously.

[0007] For a road caulking device for road repair as described above: the numbers of the front wheels and the rear wheels are respectively set to at least two, and the front wheels and the rear wheels are symmetrically distributed on both sides of the vehicle body.

[0008] For a road caulking device for road repair as described above: an inner tank is fixed inside the heat preservation tank, and the caulking material is added into the inner tank. An annular cavity is formed between the inner tank and the heat preservation tank shell. High-temperature heat-conducting oil is filled in the annular cavity, and the outer wall of the heat preservation tank is wrapped with an asbestos heat-insulating layer.

[0009] For a road caulking device for road repair as described above: a feeding hopper communicated with the inside of the screw feeding bin is fixed on the screw feeding bin. One end of the feeding hose is communicated with the inside of the heat preservation tank, and the other end extends into the feeding hopper. A regulating valve is fixedly installed on the feeding hose.

[0010] For a road caulking device for road repair as described above: the outer diameter size of the screw propeller is adapted to the inner diameter size of the screw feeding bin, and the screw propeller is arranged in a serpentine spiral around the inside of the screw feeding bin.

[0011] For a road caulking device for road repair as described above: the lifting device includes a cylinder fixed on the vehicle body. A piston rod is arranged at the output end of the cylinder. The piston rod penetrates through the vehicle body and extends to the bottom of the vehicle body and is fixed to the nozzle head.

[0012] For a road caulking device for road repair as described above: the linkage structure includes a first rotating rod rotatably arranged on the vehicle body. The rear wheel is fixed on the first rotating rod. A second rotating rod is rotatably arranged on the vehicle body. The second rotating rod and the first rotating rod are cooperated and driven through a first transmission mechanism. When the first rotating rod rotates, it will drive the second rotating rod to rotate synchronously. The second rotating rod and the rotating shaft are cooperated and driven through a second transmission mechanism. When the second rotating rod rotates, it will drive the rotating shaft to rotate synchronously.

[0013] For a road caulking device for road repair as described above: the first transmission mechanism includes a first belt pulley fixed on the first rotating rod and a second belt pulley fixed on the second rotating rod. The first belt pulley and the second belt pulley are cooperated and driven through a belt.

[0014] A road crack filling device for road repair as described above: The second transmission mechanism includes a first bevel gear fixed on the rotating shaft and a second bevel gear fixed on the second rotating rod, and the first bevel gear is meshed with the second bevel gear for transmission.

[0015] A road crack filling device for road repair as described above: A positioning sensor for detecting the position of the piston rod is installed on the piston rod, a solenoid valve for controlling the extension or retraction of the piston rod is installed on the cylinder, a PLC is fixedly installed on the push handle, and the PLC controls the start and stop of the solenoid valve and the feedback of the positioning sensor signal through programming to realize the automatic extension and retraction of the piston rod for the cylinder action.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: When in use, a nozzle head for crack filling is provided at the bottom of the vehicle body, and the nozzle head is driven by a lifting device to move up and down to adjust the nozzle head to a suitable crack filling position; a spiral feeding mechanism for conveying the caulking material inside the heat preservation tank to the inside of the nozzle head is provided on the vehicle body, and the caulking material inside the heat preservation tank is continuously conveyed to the inside of the nozzle head through the spiral feeding mechanism, so that when the vehicle body cooperates with the front wheels and the rear wheels to move above the road crack, the nozzle head is used to pour the material into the crack to repair the road, and the spiral feeding mechanism can convey the caulking material to the inside of the nozzle head at a uniform rate, solving the problems of unstable quality and easy material waste due to uneven crack filling caused by the dependence on manual operation of the spray gun; In addition, the spiral feeding mechanism includes a spiral feeding bin fixed on the vehicle body. A rotating shaft is rotatably arranged in the spiral feeding bin, and a propeller is fixed on the rotating shaft. One end of the spiral feeding bin is communicated with the heat preservation tank through a feeding hose, and the other end is communicated with the nozzle head through a discharging hose. The rotating shaft and the rear wheel are cooperated through a linkage structure. When the rear wheel rotates, it will drive the rotating shaft to rotate synchronously. When the rear wheel rotates, the vehicle body moves forward. When the rotating shaft rotates, it drives the propeller to rotate to convey the caulking material inside the spiral feeding bin into the nozzle head. Thus, the present invention links the traveling speed of the vehicle body, the spiral feeding speed and the caulking speed. When the vehicle body is stationary, the nozzle head does not discharge material. When the vehicle body is moving forward, the nozzle head discharges material, and the faster the vehicle body moves forward, the faster the discharging speed of the nozzle head. Furthermore, when facing uneven cracks such as deeper cracks, after the vehicle body travels once above the crack, the rear wheel can be lifted upward to leave the ground, and the vehicle body can be reversed with the assistance of the front wheel rotation. Then, the rear wheel is lowered back to the ground and pushed forward again. In this way, the caulking material can be cyclically poured into the deeper crack, making the caulking more uniform and without material waste. At the same time, when caulking uniform cracks, only need to align the nozzle head with the crack and then directly push the vehicle body forward, without considering the traveling speed. The slower the traveling speed, the slower the discharging speed and the longer the caulking time. The faster the traveling speed, the faster the discharging speed and the shorter the caulking time. Thus, the material can always be evenly poured into the crack, preventing the problems of insufficient material pouring or accumulation, and solving the problems that for traditional equipment for special structures such as deep and narrow cracks or expansion joints, the equipment is prone to insufficient caulking or material accumulation, affecting the durability of repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is an overall structural schematic diagram of a road caulking device for road repair from the first perspective.

[0018] Figure 2 is an overall structural schematic diagram of a road caulking device for road repair from the second perspective.

[0019] Figure 3 is a front view structural schematic diagram of a road caulking device for road repair.

[0020] Figure 4 is an overall structural schematic diagram of a road caulking device for road repair from the third perspective.

[0021] Figure 5 is a road caulking device for road repair Figure 1 partial structural schematic diagram after decomposition.

[0022] Figure 6 is a road caulking device for road repair Figure 5 partial structural schematic diagram after decomposition.

[0023] Figure 7Schematic diagram of the structure of a heat preservation tank of a road crack filling device for road repair.

[0024] Figure 8 For a road crack filling device for road repair Figure 6 Partial schematic diagram of the structure after decomposition.

[0025] Figure 9 For a road crack filling device for road repair Figure 8 Partial schematic diagram of the structure after decomposition.

[0026] Figure 10 For a road crack filling device for road repair Figure 9 Schematic diagram of the structure of the middle spiral feeding bin after partial sectioning.

[0027] In the figure: 1, vehicle body; 2, push handle; 3, front wheel; 4, first rotating rod; 5, rear wheel; 6, heat preservation tank; 7, spiral feeding bin; 8, feeding hopper; 9, feeding hose; 10, regulating valve; 11, rotating shaft; 12, propeller; 13, discharging hose; 14, nozzle head; 15, cylinder; 16, piston rod; 17, second rotating rod; 18, first belt pulley; 19, second belt pulley; 20, belt; 21, first bevel gear; 22, second bevel gear; 23, plc; 24, feeding hopper. Specific implementation mode

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0029] Please refer to Figures 1 to 10 , as an embodiment of the present invention, a road crack filling device for road repair includes a vehicle body 1, a push handle 2 is fixed on the vehicle body 1, front wheels 3 and rear wheels 5 are respectively rotatably arranged at the front and rear ends of the vehicle body 1, a heat preservation tank 6 is fixed on the vehicle body 1, a nozzle head 14 for crack filling is arranged at the bottom of the vehicle body 1, and the nozzle head 14 can move up and down driven by a lifting device arranged on the vehicle body 1; A spiral feeding mechanism for conveying the caulking material inside the heat preservation tank 6 into the nozzle head 14 is arranged on the vehicle body 1. The spiral feeding mechanism includes a spiral feeding bin 7 fixed on the vehicle body 1. A rotating shaft 11 is rotatably arranged in the spiral feeding bin 7, a propeller 12 is fixed on the rotating shaft 11, one end of the spiral feeding bin 7 is communicated with the heat preservation tank 6 through a feeding hose 9, and the other end is communicated with the nozzle head 14 through a discharging hose 13; The rotating shaft 11 and the rear wheel 5 are cooperated through a linkage structure, and when the rear wheel 5 rotates, the rotating shaft 11 will be driven to rotate synchronously.

[0030] In this embodiment, during use, a nozzle head 14 for caulking is provided at the bottom of the vehicle body 1. The nozzle head 14 is driven by a lifting device to move up and down so as to adjust the nozzle head 14 to a suitable caulking position. A screw feeding mechanism for conveying the caulking material inside the heat preservation tank 6 into the nozzle head 14 is provided on the vehicle body 1. The caulking material inside the heat preservation tank 6 is continuously conveyed into the nozzle head 14 through the screw feeding mechanism. Thus, when the vehicle body 1 cooperates with the front wheels 3 and the rear wheels 5 to move forward above the road crack, the material is poured into the crack by using the nozzle head 14 to repair the road. Moreover, the screw feeding mechanism can convey the caulking material into the nozzle head 14 at a uniform rate, solving the problems of unstable quality and easy uneven caulking and material waste caused by the dependence on manual operation of the spray gun. In addition, the screw feeding mechanism includes a screw feeding bin 7 fixed on the vehicle body 1. A rotating shaft 11 is rotatably arranged in the screw feeding bin 7. A screw propeller 12 is fixed on the rotating shaft 11. One end of the screw feeding bin 7 is communicated with the heat preservation tank 6 through a feeding hose 9, and the other end is communicated with the nozzle head 14 through a discharging hose 13. The rotating shaft 11 and the rear wheel 5 are cooperated through a linkage structure. When the rear wheel 5 rotates, the rotating shaft 11 will rotate synchronously. When the rear wheel 5 rotates, the vehicle body 1 moves forward. When the rotating shaft 11 rotates, the screw propeller 12 rotates to convey the caulking material inside the screw feeding bin 7 into the nozzle head 14. Thus, the present invention links the traveling speed of the vehicle body 1, the screw feeding speed and the caulking speed. When the vehicle body 1 is stationary, the nozzle head 14 does not discharge material. When the vehicle body 1 travels, the nozzle head 14 discharges material, and the faster the vehicle body 1 travels, the faster the discharging speed of the nozzle head 14.

[0031] It should be noted that the vehicle body 1 is made of a transparent material so as to directly observe the caulking condition of the road by the nozzle head 14 through the vehicle body 1.

[0032] As a further scheme of the present invention, the numbers of the front wheels 3 and the rear wheels 5 are respectively set to at least two, and the front wheels 3 and the rear wheels 5 are symmetrically distributed on both sides of the vehicle body 1.

[0033] In this embodiment, on the one hand, the front wheels 3 and the rear wheels 5 support the vehicle body 1 from the four corners at the bottom of the vehicle body 1 to ensure the stability during caulking. On the other hand, the rotation of the front wheels 3 and the rear wheels 5 can drive the vehicle body 1 to move forward smoothly on the road.

[0034] As a further scheme of the present invention, an inner liner is fixed inside the heat preservation tank 6. The caulking material is added into the inner liner. An annular cavity is formed between the inner liner and the shell of the heat preservation tank 6. High-temperature heat-conducting oil is filled in the annular cavity. The outer wall of the heat preservation tank 6 is wrapped with an asbestos heat-insulating layer.

[0035] In this embodiment, a feeding hopper 24 is fixed to the top of the heat preservation tank 6. After the hot caulking material is added into the heat preservation tank 6 through the feeding hopper 24, the heat-conducting oil circulates by natural convection to uniformly transfer heat, avoiding local overheating and carbonization of the caulking material. Without relying on electricity, it relies on the heat conduction of the material itself to maintain the temperature. At the same time, an asbestos heat-insulating layer is wrapped around the outer wall of the heat preservation tank 6 to effectively insulate the hot caulking material inside the heat preservation tank 6.

[0036] As a further solution of the present invention, a feed hopper 8 communicating with the inside of the spiral feeding bin 7 is fixed to the spiral feeding bin 7. One end of the feed hose 9 communicates with the inside of the heat preservation tank 6, and the other end extends into the inside of the feed hopper 8. A regulating valve 10 is fixedly installed on the feed hose 9.

[0037] In this embodiment, the regulating valve 10 can be used to adjust the flow rate of the caulking material conveyed from the heat preservation tank 6 into the spiral feeding bin 7, so as to facilitate the adjustment of the discharge flow rate of the nozzle head 14. The caulking material inside the heat preservation tank 6 enters the inside of the feed hopper 8 through the feed hose 9 under the action of gravity and then enters the inside of the spiral feeding bin 7.

[0038] As a further solution of the present invention, the outer diameter of the propeller 12 is adapted to the inner diameter of the spiral feeding bin 7, and the propeller 12 is arranged in a serpentine spiral around the inside of the spiral feeding bin 7.

[0039] In this embodiment, when the rotating shaft 11 rotates, it will drive the propeller 12 to rotate synchronously, and then the propeller 12 rotates to convey the caulking material inside the spiral feeding bin 7 in a spiral manner, realizing the continuous conveyance of the caulking material.

[0040] As a further solution of the present invention, the lifting device includes a cylinder 15 fixed to the vehicle body 1. A piston rod 16 is provided at the output end of the cylinder 15. The piston rod 16 penetrates through the vehicle body 1 and extends to the bottom of the vehicle body 1 and is fixed to the nozzle head 14.

[0041] In this embodiment, a lithium battery is built into the vehicle body 1. The cylinder 15 is electrically connected to the lithium battery through a wire. Starting the cylinder 15 can drive the piston rod 16 to extend and retract, and thus can adjust the height of the nozzle head 14, so that the discharge port of the nozzle head 14 is adjusted to a suitable caulking position at the crack.

[0042] As a further solution of the present invention, the linkage structure includes a first rotating rod 4 rotatably arranged on the vehicle body 1. The rear wheel 5 is fixed to the first rotating rod 4. A second rotating rod 17 is rotatably arranged on the vehicle body 1. The second rotating rod 17 and the first rotating rod 4 are in transmission cooperation through a first transmission mechanism. When the first rotating rod 4 rotates, it will drive the second rotating rod 17 to rotate synchronously. The second rotating rod 17 and the rotating shaft 11 are in transmission cooperation through a second transmission mechanism. When the second rotating rod 17 rotates, it will drive the rotating shaft 11 to rotate synchronously.

[0043] In this embodiment, when the hand-held push handle 2 is pushed to move the vehicle body 1 forward, the rear wheel 5 will roll on the ground. When the rear wheel 5 rotates, it will drive the first rotating rod 4 to rotate. By means of the transmission cooperation between the second rotating rod 17 and the first rotating rod 4 through the first transmission mechanism, when the first rotating rod 4 rotates, it will drive the second rotating rod 17 to rotate synchronously. By means of the transmission cooperation between the second rotating rod 17 and the rotating shaft 11 through the second transmission mechanism, when the second rotating rod 17 rotates, it will drive the rotating shaft 11 to rotate synchronously. When the rotating shaft 11 rotates, it will drive the propeller 12 to rotate to perform spiral conveyance on the caulking material inside the spiral feeding bin 7.

[0044] As a further solution of the present invention, the first transmission mechanism includes a first belt pulley 18 fixed on the first rotating rod 4 and a second belt pulley 19 fixed on the second rotating rod 17. The first belt pulley 18 and the second belt pulley 19 are in transmission cooperation through a belt 20.

[0045] In this embodiment, when the first rotating rod 4 rotates, it will drive the first belt pulley 18 to rotate. By means of the transmission cooperation between the first belt pulley 18 and the second belt pulley 19 through the belt 20, the second belt pulley 19 is driven to rotate, thereby driving the second rotating rod 17 to rotate.

[0046] As a further solution of the present invention, the second transmission mechanism includes a first bevel gear 21 fixed on the rotating shaft 11 and a second bevel gear 22 fixed on the second rotating rod 17. The first bevel gear 21 and the second bevel gear 22 are in meshing transmission.

[0047] In this embodiment, when the second rotating rod 17 rotates, it will drive the second bevel gear 22 to rotate. By means of the meshing transmission between the first bevel gear 21 and the second bevel gear 22, the first bevel gear 21 is driven to rotate and further drive the rotating shaft 11 to rotate.

[0048] As a further solution of the present invention, a position sensor for detecting the position of the piston rod 16 is installed on the piston rod 16, a solenoid valve for controlling the extension or retraction of the piston rod 16 is installed on the cylinder 15, and a PLC 23 is fixedly installed on the push handle 2. The PLC 23 controls the start and stop of the solenoid valve and the feedback of the position sensor signal through programming, realizing the automatic extension and retraction of the piston rod 16 of the cylinder 15.

[0049] In this embodiment, the PLC 23, the solenoid valve, and the position sensor are all electrically connected to the lithium battery. At the same time, the cylinder 15, the solenoid valve, and the position sensor are electrically connected to the PLC 23. Through the PLC 23 controlling the start and stop of the solenoid valve and the feedback of the position sensor signal through programming, the automatic extension and retraction of the piston rod 16 of the cylinder 15 are realized, and the telescopic distance of the piston rod 16 is controlled to adjust the height position of the nozzle head 14.

[0050] The working principle of the invention is as follows: When in use, the hot caulking material is added into the interior of the heat preservation tank 6 through the feeding hopper 24. A nozzle head 14 for caulking is provided at the bottom of the vehicle body 1. The nozzle head 14 is driven by a lifting device to move up and down so as to adjust the nozzle head 14 to a suitable caulking position. A spiral feeding mechanism for conveying the caulking material inside the heat preservation tank 6 into the nozzle head 14 is provided on the vehicle body 1. The spiral feeding mechanism includes a spiral feeding bin 7 fixed on the vehicle body 1. A rotating shaft 11 is rotatably arranged inside the spiral feeding bin 7. A propeller 12 is fixed on the rotating shaft 11. One end of the spiral feeding bin 7 is communicated with the heat preservation tank 6 through a feeding hose 9, and the other end is communicated with the nozzle head 14 through a discharging hose 13. When the regulating valve 10 is opened, the material inside the heat preservation tank 6 enters the inside of the spiral feeding bin 7 through the feeding hose 9. The rotating shaft 11 and the rear wheel 5 are cooperated through a linkage structure. When the rear wheel 5 rotates, the rotating shaft 11 will rotate synchronously. When caulking, when holding the push handle 2 and pushing the vehicle body 1 forward, the rear wheel 5 will roll on the ground. When the rear wheel 5 rotates, the vehicle body 1 moves forward. When the rotating shaft 11 rotates, the propeller 12 rotates to convey the caulking material inside the spiral feeding bin 7 into the nozzle head 14. Through the spiral feeding mechanism, the caulking material inside the heat preservation tank 6 is continuously conveyed into the nozzle head 14. Thus, when the vehicle body 1 cooperates with the front wheel 3 and the rear wheel 5 to travel above the road crack, the nozzle head 14 is used to pour the material into the crack to repair the road. The spiral feeding mechanism can convey the caulking material into the nozzle head 14 at a uniform rate.

[0051] The above embodiments are exemplary rather than restrictive. Therefore, without departing from the spirit or basic characteristics of the present invention, all technical solutions that can implement the present invention in other specific forms are included in the present invention.

Claims

1. A road crack filling device for road repair, including a vehicle body (1), characterized in that, A push handle (2) is fixed on the vehicle body (1). Front wheels (3) and rear wheels (5) are respectively rotatably arranged at the front and rear ends of the vehicle body (1). A heat preservation tank (6) is fixed on the vehicle body (1). A nozzle head (14) for caulking is arranged at the bottom of the vehicle body (1), and the nozzle head (14) can move up and down driven by a lifting device arranged on the vehicle body (1). A screw feeding mechanism for conveying the caulking material inside the heat preservation tank (6) into the nozzle head (14) is arranged on the vehicle body (1). The screw feeding mechanism includes a screw feeding bin (7) fixed on the vehicle body (1). A rotating shaft (11) is rotatably arranged in the screw feeding bin (7). A screw propeller (12) is fixed on the rotating shaft (11). One end of the screw feeding bin (7) is communicated with the heat preservation tank (6) through a feeding hose (9), and the other end is communicated with the nozzle head (14) through a discharging hose (13). The rotating shaft (11) and the rear wheel (5) are cooperated through a linkage structure. When the rear wheel (5) rotates, the rotating shaft (11) will be driven to rotate synchronously.

2. The road crack filling device for road repair according to claim 1, characterized in that, The numbers of the front wheels (3) and the rear wheels (5) are respectively set to be at least two, and the front wheels (3) and the rear wheels (5) are symmetrically distributed on both sides of the vehicle body (1).

3. A road crack filling device for road repair according to claim 1, characterized in that, An inner tank is fixed inside the heat preservation tank (6), and the caulking material is added into the inner tank. An annular cavity is formed between the inner tank and the shell of the heat preservation tank (6), and high-temperature heat-conducting oil is filled in the annular cavity. An asbestos heat-insulating layer is wrapped on the outer wall of the heat preservation tank (6).

4. A road crack filling device for road repair according to claim 1, wherein, A feeding hopper (8) communicated with the inside of the screw feeding bin (7) is fixed on the screw feeding bin (7). One end of the feeding hose (9) is communicated with the inside of the heat preservation tank (6), and the other end extends into the feeding hopper (8). A regulating valve (10) is fixedly installed on the feeding hose (9).

5. A road crack filling device for road repair according to claim 1, characterized in that, The outer diameter of the screw propeller (12) is adapted to the inner diameter of the screw feeding bin (7), and the screw propeller (12) is arranged in a serpentine spiral around the inside of the screw feeding bin (7).

6. The road crack filling device for road repair according to claim 1, characterized in that, The lifting device includes a cylinder (15) fixed on the vehicle body (1). A piston rod (16) is arranged at the output end of the cylinder (15). The piston rod (16) penetrates through the vehicle body (1) and extends to the bottom of the vehicle body (1) and is fixed to the nozzle head (14).

7. The road caulking device for road repair according to claim 1, characterized in that, The linkage structure includes a first rotating rod (4) rotatably arranged on the vehicle body (1). The rear wheel (5) is fixed on the first rotating rod (4). A second rotating rod (17) is rotatably arranged on the vehicle body (1). The second rotating rod (17) and the first rotating rod (4) are cooperated and driven through a first transmission mechanism. When the first rotating rod (4) rotates, the second rotating rod (17) will be driven to rotate synchronously. The second rotating rod (17) and the rotating shaft (11) are cooperated and driven through a second transmission mechanism. When the second rotating rod (17) rotates, the rotating shaft (11) will be driven to rotate synchronously.

8. The road caulking device for road repair according to claim 7, characterized in that, The first transmission mechanism includes a first pulley (18) fixed on the first rotating rod (4) and a second pulley (19) fixed on the second rotating rod (17), and the first pulley (18) and the second pulley (19) are in cooperative transmission through a belt (20).

9. The road crack filling device for road repair according to claim 7, characterized in that, The second transmission mechanism includes a first bevel gear (21) fixed on the rotating shaft (11) and a second bevel gear (22) fixed on the second rotating rod (17), and the first bevel gear (21) is in meshing transmission with the second bevel gear (22).

10. A road crack filling device for road repair according to claim 6, characterized in that, A position sensor for detecting the position of the piston rod (16) is installed on the piston rod (16), a solenoid valve for controlling the extension or retraction of the piston rod (16) is installed on the air cylinder (15), a PLC (23) is fixedly installed on the push handle (2), and the PLC (23) controls the start and stop of the solenoid valve and the feedback of the position sensor signal through programming, so as to realize the automatic extension and retraction of the piston rod (16) for the action of the air cylinder (15).

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