Pavement maintenance device and method for urban road

Abstract

The invention belongs to the technical field of municipal engineering, and discloses a pavement maintenance device for urban roads, the pavement maintenance device comprises a bottom plate, vertical rods are fixedly mounted on the front and rear sides of the top of the bottom plate, and the outer surfaces of the vertical rods are movably sleeved with connecting plates. By arranging a spring, a hinge rod, a rolling cylinder and a spray head, when an operator walks on a road, filler sprayed by the spray head can gradually cover the whole gap along with overall advancing of a bottom plate, the bottom of the rolling cylinder makes contact with the ground due to descending of a lifting plate, at the moment, the hinge rod pushes two movable plates to move in the opposite directions, and the movable plates can move in the opposite directions; according to the device, a spring is arranged on the base plate, so that the spring is stretched, the spring can exert reverse pulling force on the movable plate under the elastic force recovery effect, a hinge rod can push a mounting frame downwards, a rolling cylinder is tightly attached to the ground, when the base plate moves forwards integrally, filler is flattened, the repairing efficiency is improved, and the labor intensity of operators is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of municipal engineering, and specifically relates to a road surface maintenance device and method for urban roads. Background Art

[0002] Urban roads are an organic part of urban infrastructure construction. Their main function is to provide services for traffic activities within the city, including the passage of various vehicles and pedestrians. These roads constitute the blood vessels of the city and are the link between various areas and functional areas of the city.

[0003] Urban roads, as the main arteries of urban traffic, will inevitably have various problems after long-term use and erosion by various environmental factors. Among them, road surface gaps are a more common one. These gaps not only affect the aesthetics of the road, but more importantly, they will weaken the road's bearing capacity and driving safety, thereby affecting the smoothness of urban traffic and the safety of citizens' travel. The traditional method of repairing road surface gaps is mainly to cover the entire gap with filling materials, and then the operator uses a roller or other tools to flatten the filling material to form a flat whole with the surrounding road surface. However, this maintenance method greatly increases the labor intensity of the operators, and the repair efficiency is very low, so it needs to be improved. Summary of the invention

[0004] The object of the present invention is to provide a road surface maintenance device and method for urban roads to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical scheme: a road surface maintenance device for urban roads, comprising a base plate, vertical rods are fixedly installed on the front and rear sides of the top of the base plate, and a connecting plate is movably sleeved on the outer surface of the vertical rod, the number of the connecting plates is two, a lifting plate is fixedly connected between the two connecting plates, the front and rear sides of the right side of the bottom of the lifting plate are fixedly installed with fixed blocks, a rectangular rod is fixedly connected between the fixed blocks, the front and rear sides of the outer surface of the rectangular rod are movably sleeved with movable plates, the number of the movable plates is two, the outer sides of the two movable plates are fixedly connected with springs, the other end of the spring is fixedly connected to the outer surface of the fixed block, the bottom of the movable plate is hinged with an articulated rod, the bottom of the articulated rod is hinged with an installation frame, the interior of the installation frame is movably sleeved with a circular shaft, the outer surface of the circular shaft is fixedly sleeved with a rolling cylinder, and the bottom of the lifting plate is fixedly connected with a spray head.

[0006] Preferably, a barrel is fixedly installed on the right side of the top of the base plate, a stuffing pump is fixedly installed on the bottom of the barrel, a feed pipe is fixedly installed on the top of the stuffing pump, the outer surface of the feed pipe is fixedly socketed with the inner surface of the barrel, a discharge hose is fixedly connected to the left side of the stuffing pump, and the left end of the discharge hose passes through the lifting plate and is fixedly connected to the top of the nozzle.

[0007] Preferably, fixing rods are fixedly installed on both the front and rear sides of the bottom of the lifting plate, there are four fixing rods, round wheels are movably installed inside the bottom ends of the four fixing rods, and universal wheels are movably installed at the four corners of the bottom of the base plate.

[0008] Preferably, a shell is fixedly installed on the top of the lifting plate, a fan is fixedly installed on the top of the right side of the shell, an air outlet duct is fixedly installed on the right side of the fan, an air inlet duct is fixedly installed on the left side of the fan, the outer surface of the air inlet duct is fixedly sleeved with the inner wall of the shell, a dustproof plate is fixedly sleeved inside the air inlet duct, and a top plate is hinged on the top of the shell.

[0009] Preferably, a collecting box is movably installed inside the shell, a connecting tube is fixedly sleeved inside the top left side of the shell, a baffle is hinged inside the right end of the connecting tube, the bottom end of the connecting tube passes through the lifting plate and extends to the bottom of the lifting plate and is fixedly installed with a fixing box, and a wear-resistant rubber frame is fixedly installed at the bottom of the fixing box.

[0010] Preferably, mounting blocks are fixedly installed on both the front and rear sides of the left side of the top of the base plate, a motor located on the rear side of the base plate is fixedly installed on the right side of the mounting block, the other end of the motor output shaft is fixedly connected to a first threaded rod, the outer surface of the first threaded rod is movably socketed with the inner surface of the mounting block, and a second threaded rod located on the front side of the top of the base plate is movably socketed between the mounting blocks.

[0011] Preferably, a first transmission wheel is fixedly sleeved on the left end of the first threaded rod, a second transmission wheel is fixedly sleeved on the left end of the second threaded rod, and the second transmission wheel is transmission-connected to the first transmission wheel via a transmission belt.

[0012] Preferably, a movable plate is threadedly sleeved on the outer surfaces of the first threaded rod and the second threaded rod, and the bottom of the movable plate is movably connected to the top of the bottom plate.

[0013] Preferably, a push-pull rod is hinged inside the top end of the movable plate, and the top end of the push-pull rod is hinged to the bottom end of the connecting plate.

[0014] Preferably, the steps include:

[0015] When the operator is repairing the road gap, he first starts the motor, so that the first threaded rod drives the first transmission wheel to rotate, and the first transmission wheel drives the second transmission wheel and the second threaded rod to rotate through the transmission belt, so that the movable plate can be driven to move, so that the push-pull rod can pull the connecting plate to move downward along the outer surface of the vertical rod, and then the lifting plate is lowered. At this time, the round wheel will contact the ground, so that the wear-resistant rubber frame is close to the ground. Then, the operator starts the fan, so that the air inlet pipe can generate suction, so that the fixed box can generate suction through the connecting pipe, and then the dust and debris at the road gap can be sucked into the inside of the collection box as the bottom plate moves forward as a whole;

[0016] As the lifting plate descends, the bottom of the roller cylinder will touch the ground, and the hinged rod will push the two movable plates to move toward each other, so that the spring is stretched, and then the spring can apply a reverse pulling force to the movable plate under the action of elastic recovery, so that the hinged rod can push the installation frame downward, so that the roller cylinder can be close to the ground;

[0017] The operator then pours the filler into the barrel and starts the filler pump so that the feed pipe can suck the filler and then transport it to the inside of the nozzle through the discharge hose. At this time, as the base plate moves forward as a whole, the filler sprayed by the nozzle can cover the entire gap, and the roller can flatten the filler on the ground while moving forward, and at the same time allow the filler to be squeezed into the gap, thereby improving the road repair effect.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. The present invention provides a spring, an articulated rod, a roller cylinder and a nozzle. When the operator is repairing the road, as the base plate moves forward as a whole, the filler sprayed by the nozzle will gradually cover the entire gap, and due to the descent of the lifting plate, the bottom of the roller cylinder contacts the ground. At this time, the articulated rod will push the two movable plates to move towards each other, so that the spring is stretched, and then the spring can apply a reverse pulling force to the movable plate under the action of elastic recovery, so that the articulated rod can push the installation frame downward, so that the roller cylinder is close to the ground, so that when the base plate moves forward as a whole, the filler is flattened, thereby improving the repair efficiency and reducing the labor intensity of the operator.

[0020] 2. The present invention provides a connecting pipe, a fixing box, a fan and an air inlet pipe. After the lifting plate is lowered, the wear-resistant rubber frame can be close to the ground. At this time, by starting the fan, the air inlet pipe will generate suction, so that the connecting pipe can generate suction, and then the fixing box can suck the dust and debris on the ground into the inside of the collection box before the nozzle sprays out the filler, thereby avoiding the dust and debris affecting the adhesion between the filler and the road surface, and improving the repair quality.

[0021] 3. The present invention sets a motor, a first threaded rod, a second threaded rod and a push-pull rod. When not in use, the operator can start the motor to make the first threaded rod drive the first transmission wheel to rotate, and the first transmission wheel will drive the second transmission wheel and the second threaded rod to rotate through the transmission belt, so that the first threaded rod and the second threaded rod can drive the two movable plates to move at the same time, and the push-pull rod pushes the connecting plate to rise, so that the roller cylinder, the nozzle and the fixed box are away from the ground to avoid collision with obstacles and damage when moving forward. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the lifting plate of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the side surface of the lifting plate of the present invention;

[0025] Figure 4 It is a cross-sectional structural schematic diagram of the front side of the present invention;

[0026] Figure 5 It is a structural schematic diagram of the back side of the present invention;

[0027] Figure 6 for Figure 4 A schematic diagram of the local enlarged structure at point A in the middle;

[0028] Figure 7 for Figure 4 Schematic diagram of the local enlarged structure at point B in the middle.

[0029] In the figure: 1, bottom plate; 2, vertical rod; 3, connecting plate; 4, lifting plate; 5, fixed block; 6, rectangular rod; 7, movable plate; 8, spring; 9, hinged rod; 10, mounting frame; 11, round shaft; 12, roller cylinder; 13, nozzle; 14, barrel; 15, stuffing pump; 16, feed pipe; 17, discharge hose; 18, fixed rod; 19, round wheel; 20, shell; 21, collecting box; 22, baffle; 23, connecting pipe; 24, fixed box; 25, fan; 26, air outlet pipe; 27, air inlet pipe; 28, dustproof plate; 29, top plate; 30, mounting block; 31, motor; 32, first threaded rod; 33, first transmission wheel; 34, second threaded rod; 35, second transmission wheel; 36, transmission belt; 37, moving plate; 38, push-pull rod; 39, universal wheel; 40, wear-resistant rubber frame. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] like Figures 1 to 7 As shown, an embodiment of the present invention provides a road surface maintenance device for urban roads, including a base plate 1, vertical rods 2 are fixedly installed on the front and rear sides of the top of the base plate 1, and a connecting plate 3 is movably sleeved on the outer surface of the vertical rod 2. There are two connecting plates 3, and a lifting plate 4 is fixedly connected between the two connecting plates 3. Fixed blocks 5 are fixedly installed on the front and rear sides of the right side of the bottom of the lifting plate 4, and rectangular rods 6 are fixedly connected between the fixed blocks 5. Movable plates 7 are movably sleeved on the front and rear sides of the outer surfaces of the rectangular rods 6. There are two movable plates 7, and springs 8 are fixedly connected to the outer sides of the two movable plates 7. The other end of the spring 8 is fixedly connected to the outer surface of the fixed block 5. An articulated rod 9 is hinged inside the bottom end of the movable plate 7, and a mounting frame 10 is hinged at the bottom of the articulated rod 9. A circular shaft 11 is movably sleeved inside the mounting frame 10, and a roller cylinder 12 is fixedly sleeved on the outer surface of the circular shaft 11. A nozzle 13 is fixedly connected to the bottom of the lifting plate 4.

[0032] The operator can spray the filler onto the gap in the ground through the nozzle 13, and then as the bottom plate 1 moves forward as a whole, the filler sprayed by the nozzle 13 can cover the entire gap. At this time, since the roller cylinder 12 contacts the ground, the hinged rod 9 will push the two movable plates 7 to move towards each other, so that the spring 8 is stretched, and then the spring 8 can apply a reverse pulling force to the movable plate 7 under the action of elastic recovery, so that the hinged rod 9 can push the mounting frame 10 downward, so that the roller cylinder 12 can flatten the filler on the ground when moving forward, and at the same time allow the filler to be squeezed into the gap.

[0033] Among them, a barrel 14 is fixedly installed on the right side of the top of the base plate 1, a stuffing pump 15 is fixedly installed on the bottom of the barrel 14, a feed pipe 16 is fixedly installed on the top of the stuffing pump 15, the outer surface of the feed pipe 16 is fixedly connected to the inner surface of the barrel 14, and a discharge hose 17 is fixedly connected to the left side of the stuffing pump 15, and the left end of the discharge hose 17 passes through the lifting plate 4 and is fixedly connected to the top of the nozzle 13.

[0034] The operator starts the filling pump 15 so that the feeding pipe 16 can suck the filling in the barrel 14 and then input it into the nozzle 13 through the discharge hose 17 so as to be sprayed out through the nozzle 13 .

[0035] Among them, fixed rods 18 are fixedly installed on the front and rear sides of the bottom of the lifting plate 4. There are four fixed rods 18. Round wheels 19 are movably installed inside the bottom ends of the four fixed rods 18, and universal wheels 39 are movably installed at the four corners of the bottom of the base plate 1.

[0036] By providing the round wheel 19, the round wheel 19 can touch the ground after the lifting plate 4 is lowered, thereby preventing the bottom of the nozzle 13 from contacting the ground and being worn.

[0037] Among them, a shell 20 is fixedly installed on the top of the lifting plate 4, a fan 25 is fixedly installed on the top of the right side of the shell 20, an air outlet duct 26 is fixedly installed on the right side of the fan 25, and an air inlet duct 27 is fixedly installed on the left side of the fan 25. The outer surface of the air inlet duct 27 is fixedly sleeved with the inner wall of the shell 20, and a dustproof plate 28 is fixedly sleeved inside the air inlet duct 27. The top of the shell 20 is hinged with a top plate 29.

[0038] The operator can start the fan 25 so that the air inlet pipe 27 can generate suction. At the same time, due to the design of the dustproof plate 28, dust can be prevented from entering the interior of the fan 25.

[0039] Among them, a collecting box 21 is movably installed inside the shell 20, a connecting pipe 23 is fixedly sleeved inside the top left side of the shell 20, a baffle 22 is hinged inside the right end of the connecting pipe 23, the bottom end of the connecting pipe 23 passes through the lifting plate 4 and extends to the bottom of the lifting plate 4 and is fixedly installed with a fixing box 24, and a wear-resistant rubber frame 40 is fixedly installed at the bottom of the fixing box 24.

[0040] When the fan 25 is started, negative pressure is generated inside the collecting box 21 , which causes the baffle 22 to rotate rightward, thereby releasing the seal on the connecting pipe 23 .

[0041] Among them, mounting blocks 30 are fixedly installed on both the front and rear sides of the left side of the top of the base plate 1, and a motor 31 located on the rear side of the base plate 1 is fixedly installed on the right side of the mounting block 30. The other end of the output shaft of the motor 31 is fixedly connected to a first threaded rod 32. The outer surface of the first threaded rod 32 is movably connected to the inner surface of the mounting block 30, and a second threaded rod 34 located on the front side of the top of the base plate 1 is movably connected between the mounting blocks 30.

[0042] The operator can start the motor 31 to rotate the first threaded rod 32 , and the thread directions of the first threaded rod 32 and the second threaded rod 34 are the same.

[0043] The left end of the first threaded rod 32 is fixedly sleeved with a first transmission wheel 33 , the left end of the second threaded rod 34 is fixedly sleeved with a second transmission wheel 35 , and the second transmission wheel 35 is transmission-connected to the first transmission wheel 33 via a transmission belt 36 .

[0044] When the motor 31 is started, the first threaded rod 32 drives the first transmission wheel 33 to rotate, and then the first transmission wheel 33 drives the second transmission wheel 35 to rotate through the transmission belt 36 .

[0045] The outer surfaces of the first threaded rod 32 and the second threaded rod 34 are both threadedly sleeved with a movable plate 37 , and the bottom of the movable plate 37 is movably connected to the top of the bottom plate 1 .

[0046] When the first threaded rod 32 and the second threaded rod 34 rotate, they can drive the moving plate 37 to move.

[0047] A push-pull rod 38 is hinged inside the top end of the moving plate 37 , and the top end of the push-pull rod 38 is hinged to the bottom end of the connecting plate 3 .

[0048] When the moving plate 37 moves, the push-pull rod 38 will drive the connecting plate 3 to move downward along the outer surface of the vertical rod 2 .

[0049] The steps include:

[0050] When the operator is repairing the road gap, he first starts the motor 31, so that the first threaded rod 32 drives the first transmission wheel 33 to rotate, and the first transmission wheel 33 drives the second transmission wheel 35 and the second threaded rod 34 to rotate through the transmission belt 36, so that the movable plate 37 can be driven to move, so that the push-pull rod 38 can pull the connecting plate 3 to move downward along the outer surface of the vertical rod 2, so that the lifting plate 4 is lowered, and the round wheel 19 will contact the ground at this time, so that the wear-resistant rubber frame 40 is close to the ground, and then the operator starts the fan 25, so that the air inlet pipe 27 can generate suction, so that the fixing box 24 can generate suction through the connecting pipe 23, so that the dust and debris at the road gap can be sucked into the inside of the collecting box 21 as the bottom plate 1 moves forward as a whole;

[0051] As the lifting plate 4 descends, the bottom of the roller cylinder 12 will contact the ground, and the hinged rod 9 will push the two movable plates 7 to move toward each other, so that the spring 8 is stretched, and then the spring 8 can apply a reverse pulling force to the movable plate 7 under the action of elastic recovery, so that the hinged rod 9 can push the installation frame 10 downward, so that the roller cylinder 12 can be close to the ground;

[0052] Then the operator pours the filler into the barrel 14, and then starts the filler pump 15 so that the feed pipe 16 can suck the filler, and then transport it to the inside of the nozzle 13 through the discharge hose 17. At this time, as the base plate 1 moves forward as a whole, the filler sprayed by the nozzle 13 can cover the entire gap, and the roller cylinder 12 can flatten the filler on the ground while moving forward, and at the same time allow the filler to be squeezed into the gap, thereby improving the road repair effect.

[0053] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A road surface inspection device for urban roads, comprising a base plate (1), characterized in that: The front and rear sides of the top of the bottom plate (1) are fixedly mounted with vertical rods (2), the outer surface of the vertical rod (2) is movably sleeved with a connecting plate (3), there are two connecting plates (3), a lifting plate (4) is fixedly connected between the two connecting plates (3), the front and rear sides of the right side of the bottom of the lifting plate (4) are fixedly mounted with fixed blocks (5), rectangular rods (6) are fixedly connected between the fixed blocks (5), the front and rear sides of the outer surface of the rectangular rod (6) are movably sleeved with a movable plate (7), the movable plate (7) ) are two in number, the outer sides of the two movable plates (7) are fixedly connected with springs (8), the other ends of the springs (8) are fixedly connected with the outer surface of the fixed block (5), the bottom end of the movable plate (7) is internally hinged with a hinge rod (9), the bottom of the hinge rod (9) is hinged with a mounting frame (10), the interior of the mounting frame (10) is movably sleeved with a round shaft (11), the outer surface of the round shaft (11) is fixedly sleeved with a roller (12), and the bottom of the lifting plate (4) is fixedly connected with a nozzle (13).

2. A road surface inspection device for urban roads according to claim 1, characterized in that: A barrel (14) is fixedly mounted on the right side of the top of the base plate (1), a stuffing pump (15) is fixedly mounted on the bottom of the barrel (14), a feed pipe (16) is fixedly mounted on the top of the stuffing pump (15), the outer surface of the feed pipe (16) is fixedly sleeved with the inner surface of the barrel (14), a discharge hose (17) is fixedly connected to the left side of the stuffing pump (15), and the left end of the discharge hose (17) passes through the lifting plate (4) and is fixedly connected to the top of the nozzle (13).

3. A road surface inspection device for urban roads according to claim 1, characterized in that: Fixed rods (18) are fixedly installed on both the front and rear sides of the bottom of the lifting plate (4), and there are four fixed rods (18). Round wheels (19) are movably installed inside the bottom ends of the four fixed rods (18), and universal wheels (39) are movably installed at the four corners of the bottom of the base plate (1).

4. A road surface inspection device for urban roads according to claim 1, characterized in that: A shell (20) is fixedly mounted on the top of the lifting plate (4), a fan (25) is fixedly mounted on the top of the right side of the shell (20), an air outlet pipe (26) is fixedly mounted on the right side of the fan (25), an air inlet pipe (27) is fixedly mounted on the left side of the fan (25), the outer surface of the air inlet pipe (27) is fixedly sleeved with the inner wall of the shell (20), a dustproof plate (28) is fixedly sleeved inside the air inlet pipe (27), and a top plate (29) is hingedly mounted on the top of the shell (20).

5. A road surface inspection device for urban roads according to claim 4, characterized in that: A collecting box (21) is movably installed inside the shell (20), a connecting pipe (23) is fixedly sleeved inside the top left side of the shell (20), a baffle (22) is hinged inside the right end of the connecting pipe (23), the bottom end of the connecting pipe (23) passes through the lifting plate (4) and extends to the bottom of the lifting plate (4) and is fixedly installed with a fixing box (24), and a wear-resistant rubber frame (40) is fixedly installed at the bottom of the fixing box (24).

6. A road surface inspection device for urban roads according to claim 1, characterized in that: The front and rear sides of the left side of the top of the base plate (1) are both fixedly mounted with mounting blocks (30); the right side of the mounting block (30) is fixedly mounted with a motor (31) located at the rear side of the base plate (1); the other end of the output shaft of the motor (31) is fixedly connected with a first threaded rod (32); the outer surface of the first threaded rod (32) is movably sleeved with the inner surface of the mounting block (30); and a second threaded rod (34) located at the front side of the top of the base plate (1) is movably sleeved between the mounting blocks (30).

7. A road surface inspection device for urban roads according to claim 6, characterized in that: The left end of the first threaded rod (32) is fixedly sleeved with a first transmission wheel (33), the left end of the second threaded rod (34) is fixedly sleeved with a second transmission wheel (35), and the second transmission wheel (35) is transmission-connected to the first transmission wheel (33) via a transmission belt (36).

8. A road surface inspection device for urban roads according to claim 6, characterized in that: The outer surfaces of the first threaded rod (32) and the second threaded rod (34) are both threadedly sleeved with a movable plate (37), and the bottom of the movable plate (37) is movably connected to the top of the bottom plate (1).

9. A road surface inspection device for urban roads according to claim 8, characterized in that: A push-pull rod (38) is hinged inside the top end of the movable plate (37), and the top end of the push-pull rod (38) is hinged to the bottom end of the connecting plate (3).

10. A method for using a road surface maintenance device for urban roads according to any one of claims 1 to 9, characterized in that: The following steps are involved: When repairing the road gap, the operator first starts the motor (31) so that the first threaded rod (32) drives the first transmission wheel (33) to rotate, and the first transmission wheel (33) drives the second transmission wheel (35) and the second threaded rod (34) to rotate through the transmission belt (36), thereby driving the movable plate (37) to move, so that the push-pull rod (38) can pull the connecting plate (3) to move downward along the outer surface of the vertical rod (2), thereby causing the lifting plate (4) to descend, and at this time the round wheel (19) will contact the ground, so that the wear-resistant rubber frame (40) is close to the ground, and then the operator starts the fan (25) so that the air inlet pipe (27) can generate suction, thereby generating suction in the fixed box (24) through the connecting pipe (23), and then the dust and debris at the road gap can be sucked into the inside of the collection box (21) as the bottom plate (1) moves forward as a whole; As the lifting plate (4) descends, the bottom of the roller cylinder (12) will contact the ground, and the hinged rod (9) will push the two movable plates (7) to move towards each other, so that the spring (8) is stretched, and then the spring (8) can apply a reverse pulling force to the movable plate (7) under the action of elastic recovery, so that the hinged rod (9) can push the installation frame (10) downward, so that the roller cylinder (12) can be close to the ground; The operator then pours the filler into the interior of the barrel (14), and then starts the filler pump (15) so that the feed pipe (16) can suck the filler, and then transport it to the interior of the nozzle (13) through the discharge hose (17). At this time, as the bottom plate (1) moves forward as a whole, the filler sprayed by the nozzle (13) can cover the entire gap, and the roller (12) can flatten the filler on the ground while moving forward, and at the same time, the filler can be squeezed into the gap, thereby improving the road repair effect.

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