Road surface trimming machine and method

Abstract

The invention belongs to the technical field of road surface finishing, and particularly relates to a road surface finishing machine and method.The road surface finishing machine comprises a mounting frame, supporting frames are arranged at the four corners of the mounting frame, oil cylinders are arranged in the supporting frames, walking wheels are connected to the ends of piston rods of the oil cylinders, and a pressing cavity is formed in the mounting frame in a penetrating mode; a pressing plate used for pressing the asphalt filler is arranged in the pressing cavity, the pressing plate is located in the pressing cavity and slides up and down, mounting blocks are arranged on the top of the mounting frame in a bilateral symmetry mode, mounting grooves are formed in the mounting blocks, connecting blocks are fixedly connected to the ends of the pressing plate, the connecting blocks are slidably connected with the mounting grooves, and first springs are arranged on the tops of the connecting blocks; a mounting hole is formed in the top of the mounting block; the pressing plate is lifted in the filling process, the previous tamping work of operators on the asphalt surface is replaced, the lifting height of the pressing plate can be determined through scale observation, and therefore whether the asphalt surface is flush with the ground or not is judged, and dependence on experience of constructors is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of road surface finishing, and in particular relates to a road surface finishing machine and a method. Background Art

[0002] Highway or municipal asphalt pavement is easily damaged due to many factors such as rain and snow erosion, vehicle load, etc., and requires regular maintenance.

[0003] At present, in order to carry out local repair of damaged asphalt pavement, the damaged pavement is usually dug up and cleaned, and then new asphalt filler is poured into the dug pit and scraped and compacted. The compacted asphalt surface will be slightly lower than the surrounding road surface, so multiple filling, scraping and compacting are required. The operation is cumbersome and requires relatively high construction experience of the construction workers. This is the shortcoming of the existing technology. Summary of the invention

[0004] The present invention aims to provide a road finishing machine and method. The present invention is easy to operate, and the finished road surface has high density and strength, which can meet the needs of existing vehicles.

[0005] In order to solve the above technical problems, the specific solution adopted by the present invention is: A road finishing machine comprises a mounting frame, wherein four corners of the mounting frame are provided with a support frame, an oil cylinder is provided inside the supporting frame, and a walking wheel is connected to the end of the piston rod of the oil cylinder, a pressing chamber is opened through the interior of the mounting frame, a pressing plate for pressing asphalt filler is provided inside the pressing chamber, the pressing plate slides up and down inside the pressing chamber, mounting blocks are provided at the top four corners of the mounting frame, a mounting groove is provided inside the mounting block, a connecting block is fixedly connected to the end of the pressing plate, the connecting block is slidably connected to the mounting groove, a first spring is provided on the top of the connecting block, a mounting hole is provided on the top of the mounting block, an adjusting rod is threadedly connected to the mounting hole, a pressing block for pressing the first spring to provide pressure to the pressing plate is provided at the bottom of the adjusting rod, the adjusting rod is rotatably connected to the pressing block, a scale for marking the position of the pressing block is provided on the mounting block, a feeding pipe for filling asphalt filler is provided on the top of the pressing plate, the feeding pipe is used to be connected to the asphalt pump, the feeding pipe passes through the pressing plate and is connected to the bottom thereof, and four plugging rods for marking the pressing range of the pressing plate are provided at the bottom of the mounting frame.

[0006] Preferably, one side of the mounting frame is provided with storage boxes distributed at intervals, and the inner wall of the pressing cavity is provided with wire outlet grooves corresponding to the positions of the storage boxes and of equal number, a rotatably connected winding roller is provided inside the storage box, a hose is wound on the winding roller, a punching device for punching holes in the hose is provided in the wire outlet groove, and a vacuum device for providing suction to the punched hose is provided on the inner wall on the side opposite to the wire outlet groove in the pressing cavity, and the hose passes through the bottom of the pressing plate after being punched and is connected to the vacuum device.

[0007] Preferably, the inner cavity of each wire outlet groove is rotatably connected with a rotating roller and a rotating block, the rotating roller is provided with a receiving groove for the hose to pass through, and the circumferential surface of the rotating block is provided with insert tubes for punching holes in the hose at intervals. When the hose passes through the receiving groove, the rotating roller and the rotating block are driven to rotate synchronously, so that the insert tube punches holes in the hose, and anti-slip protrusions are also provided on the circumferential surface of the receiving groove.

[0008] Preferably, the vacuum extraction device includes a vacuum pump, a placement plate is provided on the top of the mounting frame, the vacuum pump is fixed on the placement plate, the mounting frame is provided with a socket corresponding to the outlet groove, a connector for connecting to a hose is provided inside the socket, a connecting groove for connecting the connectors in sequence is provided inside the mounting frame, a connecting pipe connected to the inside of the connecting groove is provided on the top of the mounting frame, and the connecting pipe is connected to the vacuum pump.

[0009] Preferably, upper and lower arc blocks corresponding to each other are provided inside the socket, and connecting ear plates are fixedly connected to the ends of the arc blocks. The arc blocks are symmetrically arranged on the circumferential surface of the connecting head, and the two connecting ear plates corresponding to the positions in the two arc blocks are connected by a connecting rod. The connecting rod passes through the two connecting ear plates, and the two ends of the connecting rod are respectively threadedly connected with limiting nuts, and a third spring for separating the two arc blocks is sleeved on the connecting rod. Two slots are correspondingly provided on the side of the mounting frame, and a connecting hole is provided between the socket and the slot. The top of the arc block extends out from the connecting hole, and a ball is provided at the protruding end of the top of the arc block, and an insertion rod for pushing the ball to squeeze the arc block is slidably connected inside the slot.

[0010] Preferably, mounting grooves are provided on both sides of the end portion of the mounting bracket close to the wire outlet groove, one of the mounting grooves is rotatably connected to one end of a rotating rod, a handle is provided at the end of the rotating rod, a pressing rod for pressing a hose is provided at the bottom of the rotating rod, a cutting groove is provided at the top of the rotating rod which runs through the bottom of the pressing rod, a cutting knife is provided inside the cutting groove for sliding connection, a limiting rod is provided on the top of the cutting knife, movable columns are provided at both ends of the limiting rod which extend downward and are inserted into the rotating rod, the movable column is slidably connected to the rotating rod, a second spring is sleeved on the movable column, and the second spring is located between the limiting rod and the rotating rod.

[0011] Preferably, sliding grooves are provided on both sides of the mounting frame, one end of the sliding groove extends obliquely upward along the side of the mounting frame, a slidingly connected roller is provided inside the sliding groove, a rotatably connected connecting shaft is provided on the roller, a supporting wheel is provided on one end of the connecting shaft located outside the sliding groove, an electric winch is provided inside the mounting frame, the electric winch pulls the supporting wheel along the sliding groove through the connecting rope, and when the supporting wheel moves along the sliding groove, it drives the mounting frame to be gradually lifted along one side so that the asphalt is gradually separated from the bottom surface of the pressing plate, and a control switch for controlling the synchronous operation of the electric winches on both sides is provided on the side of the mounting frame.

[0012] Preferably, a handle is provided on the top of the pressing plate.

[0013] The present invention also provides a road surface finishing method based on the road surface finishing machine, comprising the following steps: Step 1: Move the mounting frame to the top of the asphalt pavement that needs to be repaired, and use the oil cylinder to control the mounting frame to descend so that the rod is inserted into the ground to mark the working range of the pressing plate. After the marking is completed, the mounting frame is raised and pushed away by the oil cylinder. Then, the staff will dig up and clean the asphalt pavement that needs to be repaired; Step 2: Pull the hoses out of the storage box one by one, and make the hoses pass through the punching device to make holes, and then pass the punched hoses under the pressing plate and connect them to the corresponding connectors; Step 3: Push the mounting frame to move above the excavated asphalt pavement, then connect the asphalt tank truck with the asphalt pump, connect the output pipe of the asphalt pump with the feed pipe, and then turn the adjusting rod to make the pressing block compress the first spring to provide pressure for the pressing plate. At this time, the pressing plate is pressed in the pit dug on the asphalt pavement, and the pressing plate fits around the pit; Step 4: Rotate the rotating rod so that the pressing rod presses on the top of the hose to seal the end of the hose; Step 5: Turn on the asphalt pump to fill the feed pipe. The asphalt flows from the feed pipe into the bottom of the pressing plate. As the asphalt filler is filled, the pressing plate gradually rises. Step 6: Turn on the vacuum pump, which will evacuate the inside of the connecting groove. On the one hand, the gas in the repair pit can be reduced through the hose, so that the air in the asphalt becomes less and its density increases. On the other hand, part of the asphalt enters the hose, so that the hose can enhance the tensile strength of the asphalt. When the asphalt surface is flush with the ground, the asphalt pump and the vacuum pump can be turned off, and then the limit rod can be pressed to make the cutter cut off the hose. Step 7: Press the control switch to start the electric winch. When the electric winch is working, pull the connecting rope to pull the connecting shaft, thereby driving the support wheel to move. During the movement of the support wheel, one end of the mounting frame will be gradually lifted, so that one end of the pressing plate is lifted first, and then the pressing plate is gradually separated from the asphalt surface along the lifted end, thereby reducing the tension generated during the separation of the pressing plate and the asphalt. After the pressing plate is separated from the asphalt surface, the asphalt pavement is repaired.

[0014] Beneficial effects of the present invention: 1. The pressing plate is raised during the filling process, thus replacing the operator's previous work of compacting the asphalt surface. The lifting height of the pressing plate can be determined by observing the scale, so as to judge whether the asphalt surface is flush with the ground, reducing the dependence on the construction workers' experience; Second, by combining the hose with asphalt filler, the tensile strength of the asphalt is enhanced. The hose is punched with a punching device, the hose is laid on the bottom of the asphalt, and the inside of the hose is evacuated with a vacuum pump, so that the excess air in the hose and the asphalt is discharged, and the asphalt is sucked into the hose to make the adhesion between the hose and the asphalt higher, thereby further increasing the tensile strength of the asphalt; 3. The electric winch drives the support wheel to move, so that the mounting plate and the asphalt bonding surface are slowly raised, gradually reducing the contact area when the mounting plate and the asphalt are separated, reducing the tension generated when the mounting plate and the asphalt surface are separated, and more completely preserving the bonding strength between the asphalt and the pit. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The three-dimensional structure of the road finishing machine of the present invention is shown in FIG. Figure 1 ; Figure 2 for Figure 1 The enlarged view of point A in the middle; Figure 3 for Figure 1 The enlarged view of point B in the middle; Figure 4 The three-dimensional structure of the road finishing machine of the present invention is shown in FIG. Figure 2 ; Figure 5 It is a schematic diagram of the cross-section structure of the road finishing machine in the present invention; Figure 6 It is a working schematic diagram of the electric winch in the road finishing machine of the present invention; Figure 7 It is a schematic diagram of the arrangement of the support wheels in the road finishing machine of the present invention; Figure 8 It is a working schematic diagram of the arc block in the road finishing machine of the present invention; Fig. 9 It is a schematic diagram of the internal structure of the storage box in the road finishing machine of the present invention; Fig.10 The figure is a schematic diagram of the positional relationship between the slot and the connecting slot in the road finishing machine of the present invention.

[0016] Figure numerals: mounting frame 1; push rod 101; pressing plate 2; supporting frame 3; piston rod of oil cylinder 4; walking wheel 5; handle 6; feeding pipe 7; connecting block 8; mounting block 9; mounting groove 10; adjusting rod 11; pressing block 12; first spring 13; rotating rod 14; grip 15; mounting groove 16; sliding groove 17; supporting wheel 18; slot 19; placing plate 20; vacuum pump 21; connecting pipe 22; control switch 25; storage box 26; rotating block 27; intubation 28; rotating roller 29; accommodating groove 30; outlet groove 301; hose 31; pressing rod 32; cutter 33; limiting rod 34; movable column 35; second spring 36; jack 37; connector 38; plug rod 39; limiting block 40; connecting rope 42; scale 43; electric winch 44; roller 45; connecting shaft 46; arc block 47; third spring 48; connecting ear plate 49; limiting nut 50; ball 51; winding roller 52; connecting groove 53; connecting rod 54. DETAILED DESCRIPTION

[0017] In order to clearly illustrate the technical features of this solution, this solution is described below through specific implementation methods and in conjunction with the accompanying drawings.

[0018] like Figure 1-10 As shown, a road finishing machine includes a mounting frame 1, which is a square frame structure. The four corners of the mounting frame 1 are provided with support frames 3. A cylinder (not shown in the figure) is installed inside the support frame 3. The end of the piston rod 4 of the cylinder is connected to a travel wheel 5. The piston rod 4 of the cylinder extends along the bottom of the support frame 3 and is connected to the travel wheel 5. The travel wheel 5 is convenient for moving the mounting frame 1. The travel wheel 5 can be raised and lowered by the cylinder to facilitate the mounting frame 1 to fit the ground for later construction. A pressing chamber is opened through the interior of the mounting frame 1. The pressing chamber is a square structure. A pressing plate 2 is provided inside the pressing chamber. The pressing plate 2 is a square structure. The pressing plate 2 is mainly used to pressurize the asphalt filler. A feeding pipe 7 for filling the asphalt filler is provided on the top of the pressing plate 2.

[0019] Mounting blocks 9 are provided at the top four corners of the mounting frame 1. Figure 5As shown, a mounting groove 10 is provided inside the mounting block 9, a connecting block 8 is fixedly connected to the end of the pressing plate 2, the connecting block 8 is slidably connected to the mounting groove 10, a first spring 13 is provided on the top of the connecting block 8, the first spring 13 is located inside the mounting groove 10, a mounting hole is provided on the top of the mounting block 9, an adjusting rod 11 is threadedly connected to the mounting hole, a pressing block 12 is provided at the bottom of the adjusting rod 11, the pressing block 12 is rotatably connected to the adjusting rod 11, and the pressing block 12 can be moved downward or upward by rotating the adjusting rod 11. By compressing the first spring 13 by the pressing block 12, pressure can be provided to the pressing plate 2, and the pressing plate 2 compacts the asphalt filled in the repaired road surface. Four insertion rods (not shown in the figure) are also provided at the bottom of the mounting frame 1. The four insertion rods can be inserted into the ground to form marks when the mounting frame 1 is pressed down, thereby recording the working range of the pressing plate 2. The staff refers to the marks formed to dig holes and clean the road surface that needs to be repaired. A handle 6 is provided on the top of the pressing plate 2. In order to facilitate the movement of the mounting frame 1, a push rod 101 is also installed on the mounting frame 1.

[0020] One side of the mounting frame 1 is provided with storage boxes 26 distributed at intervals, such as Fig. 9 As shown, a rotatably connected winding roller 52 is provided inside the storage box 26, and the winding roller 52 is rotatably connected to the inner wall of the storage box 26. A hose 31 is wound around the winding roller 52, and the hose 31 is made of a high temperature resistant material. Figure 1 As shown, the inner wall of the pressing cavity is provided with outlet grooves 301 corresponding to the positions of the storage box 26 and having the same number. The positions of the outlet grooves 301 correspond to the positions of the storage box 26, and a through hole is provided between the outlet grooves 301 and the storage box 26. The fixed end of the hose 31 is located on the winding rod 52, and the free end of the hose 31 passes through the through hole and passes out from the outlet grooves 301. The outlet grooves 301 are also provided with a punching device for punching holes in the hose 31. A vacuum device for providing suction to the punched hose 31 is provided on the inner wall of the pressing cavity on the side opposite to the outlet grooves 301. After being punched, the hose 31 passes along the bottom of the pressing plate 2 and is connected to the vacuum device.

[0021] like Figure 1 and Figure 2 As shown, the inner cavity of each outlet groove 301 is rotatably connected with a rotating roller 29 and a rotating block 27. The rotating roller 29 is provided with a receiving groove 30 for the hose 31 to pass through. The circumferential surface of the rotating block 27 is provided with insert pipes 28 for punching holes in the hose 31 at intervals. When the hose 31 passes through the receiving groove 30, the rotating roller 29 and the rotating block 27 are driven to rotate synchronously, so that the insert pipe 28 punches holes in the hose 31. The circumferential surface of the receiving groove 30 is also provided with anti-slip protrusions.

[0022] A placement plate 20 is provided on the top of the mounting frame 1, and a vacuum extraction device includes a vacuum pump 21, which is fixed on the placement plate 20. A socket 37 corresponding to the outlet groove 301 is provided on the mounting frame 1, and a connector 38 for connecting to the hose 31 is provided inside the socket 37. A connecting groove 53 for connecting the connector 38 in sequence is provided inside the mounting frame 1. A connecting pipe 22 connected to the inside of the connecting groove 53 is provided on the top of the mounting frame 1, and the connecting pipe 22 is connected to the vacuum pump 21. The connecting groove 53 is vacuumed by the vacuum pump 21, thereby providing suction for the hose 31, expelling air from the asphalt, and sucking the asphalt into the hose.

[0023] like Figure 8 As shown, the jack 37 is provided with upper and lower corresponding arc blocks 47, and the ends of the arc blocks 47 are fixedly connected with connecting ear plates 49. The arc blocks 47 are symmetrically arranged on the circumference of the connector 38. The two connecting ear plates 49 corresponding to the positions of the two arc blocks 47 are connected by a connecting rod 54. The connecting rod 54 passes through the two connecting ear plates 49, and the two ends of the connecting rod 54 are respectively threadedly connected with limit nuts 50. The connecting rod 54 is sleeved with a third spring 48 for separating the two arc blocks 47. When the two arc blocks 47 are separated, it is convenient to connect the hose 31 with the connector 38. Two slots 19 are correspondingly provided on the side of the mounting frame 1, and a connecting hole is provided between the jack 37 and the slot 19. The top of the arc block 47 extends from the connecting hole, and the protruding end of the top of the arc block 47 is provided with a ball 51. The slot 19 is slidably connected with a plug 39 for pushing the ball 51 to squeeze the arc block 47. The rod 39 is inserted into the slot 19, and the rod 39 pushes the two balls 51 toward each other, so that the two arc blocks 47 move toward each other to fix the hose 31. Figure 8 As shown, the end of the insertion rod 39 that contacts the ball 51 is set as an inclined surface.

[0024] like Figure 1 and Figure 3 As shown, the mounting frame 1 is provided with mounting grooves 16 on both sides of the end near the outlet groove 301, one of the mounting grooves 16 is rotatably connected to one end of the rotating rod 14, and the end of the rotating rod 14 is provided with a handle 15, and the operator can rotate the rotating rod 14 by holding the handle 15, and the bottom of the rotating rod 14 is provided with a pressing rod 32 for pressing the hose 31, and the hose 31 can be pressed by the pressing rod 32, so that the leaking end of the hose 31 is in a closed state, so as to facilitate the asphalt suction operation. Figure 3As shown, the top of the rotating rod 14 is provided with a cutting groove that runs through to the bottom of the pressing rod 32, and a slidably connected cutter 33 is provided inside the cutting groove. A limit rod 34 is provided on the top of the cutter 33, and both ends of the limit rod 34 are provided with movable columns 35 that extend downward and are inserted into the rotating rod 14. The movable column 35 is slidably connected to the rotating rod 14, and a second spring 36 is sleeved on the movable column 35, and the second spring 36 is located between the limit rod 34 and the rotating rod 14. After the press-sealing work of the hose 31 is completed, the limit rod 34 can be pressed by hand to make the cutter 33 extend from the bottom of the pressing rod 32 to cut the hose 31. After the cutting is completed, the second spring 36 is reset and drives the limit rod 34 and the cutter 33 to reset. In this way, the press-sealing of the hose 31 can be achieved, and the hose 31 can also be cut after completion.

[0025] Both sides of the mounting frame 1 are provided with a sliding groove 17, one end of the sliding groove 17 extends obliquely upward along the side of the mounting frame 1, and a sliding roller 45 is provided inside the sliding groove 17, and a rotationally connected connecting shaft 46 is provided on the roller 45, and a supporting wheel 18 is provided on one end of the connecting shaft 46 located outside the sliding groove 17. When the supporting wheel 18 is located inside the horizontal sliding groove 17, the bottom of the supporting wheel 18 contacts the ground to lift the mounting frame 1, and when the supporting wheel 18 is located inside the obliquely upward extension section of the sliding groove 17, the supporting wheel 18 is out of contact with the ground, so that the mounting frame 1 cannot be lifted. Figure 1 and Figure 6 As shown, an electric winch 44 is provided inside the mounting frame 1, and the electric winch 44 pulls the support wheel 18 to move along the sliding groove 17 through the connecting rope 42. When the support wheel 18 moves along the sliding groove 17, it drives the mounting frame 1 to gradually lift up along one side so that the asphalt and the bottom surface of the pressing plate 2 are gradually separated. Since the bottom surface of the pressing plate 2 is in contact with the top surface of the asphalt, the asphalt is in a viscous state under high temperature conditions, and the contact area between the pressing plate 2 and the asphalt is large, and the viscosity will be stronger. Therefore, if the pressing plate 2 is directly lifted, it will cause the pressing plate 2 to lift the asphalt out of the pit, thereby affecting the bonding strength between the asphalt and the ground in the pit. Therefore, the present invention is provided with a support wheel 18, and through the traction of the electric winch 44, the support wheel 18 can drive one side of the pressing plate 2 to slowly lift up, gradually reducing the contact area between the pressing plate 2 and the asphalt surface, thereby reducing the impact of the pressing plate 2 on the asphalt when it is lifted. A control switch 25 for controlling the synchronous operation of the electric winches 44 on both sides of the mounting frame 1 is provided on the side.

[0026] The road surface to be repaired is marked by the mounting frame 1. When marking, the mounting frame 1 is lowered to mark the ground with the bottom rod. The operator digs the road surface according to the mark and cleans the pit surface to be repaired. After cleaning, the mounting frame 1 is moved to the marked position, and then the mounting frame 1 is lowered. After the lowering is completed, the adjustment rod 11 is adjusted so that the adjustment rod 11 presses the first spring 13 to compress the first spring 13. Next, the pipeline on the asphalt tank truck is connected to the asphalt pump, and then the delivery pipe of the asphalt pump is connected to the discharge pipe 7. After the connection is completed, the filling is started. During the filling process, the asphalt will be squeezed out of the discharge pipe and the pressing plate 2 will be raised. This operation method can make the pressing plate 2 generate pressure on the asphalt road surface, making the asphalt filler more compact, and the density of the crushed gravel and asphalt mixed inside the asphalt is higher, so that the repaired road surface is more solid and durable. The scale 43 can penetrate the rising length of the pressing plate 2, so as to judge whether the asphalt below the pressing plate is parallel to the ground. When the asphalt is parallel to the ground, the filling can be stopped and the delivery pipe of the asphalt pump can be separated from the discharge pipe 7.

[0027] In order to enhance the tensile strength of the asphalt-finished pavement, we use a combination of a hose 31 and asphalt to further enhance the tensile strength of the asphalt. The hose 31 used in the present invention is made of high temperature resistant material, and the aperture of the hose 31 is adapted to the aperture of the connector 38. Before filling the asphalt, the operator lifts the pressing plate 2 by pulling the handle 6, and pulls the hose 31, passes multiple hoses 31 from the bottom of the pressing plate 2, connects the hose 31 with the connector 38, and then passes the asphalt filler into the discharge pipe 7 for filling. After the filling is completed, the vacuum pump 21 is turned on to evacuate the hose 31. The purpose of vacuuming is to extract the excess air in the hose 31 and the asphalt, and to draw a small amount of asphalt into the hose 31, thereby strengthening the bonding strength between the asphalt and the hose 31, improving the tensile strength of the asphalt, and making the repaired pavement more solid and durable. After the suction operation is completed, the plug 39 can be pulled out from the slot 19.

[0028] After the asphalt pavement is repaired, the connecting rope 42 is pulled by the electric winch 44 to drive the support wheel 18 to work. At this time, the bottom surface of the pressing plate 2 is in full contact with the asphalt surface. Due to the large contact area, the adhesion is stronger. If the pressing plate 2 is directly lifted, the pressing plate 2 will bring up the asphalt, thereby reducing the bonding strength between the asphalt and the pit. For this reason, the support wheel 18 is used to gradually lift the pressing plate 2, slowly reducing the contact area between the pressing plate 2 and the top surface of the asphalt, so that the pressing plate 2 is slowly separated from the asphalt surface, and the bonding strength between the repaired asphalt filler and the pit is more completely preserved.

[0029] The present invention also provides a road surface finishing method based on the road surface finishing machine, comprising the following steps: Step 1: Move the mounting frame 1 to the top of the asphalt pavement that needs to be repaired, and use the oil cylinder to control the mounting frame 1 to descend so that the insertion rod is inserted into the ground to mark the working range of the pressing plate 2. After the marking is completed, the mounting frame 1 is raised and pushed away by the oil cylinder. Then, the staff will dig up and clean the asphalt pavement that needs to be repaired; Step 2: Pull the hose 31 out of the storage box 26 one by one, and make the hose 31 be punched by a punching device, and the punched hose 31 passes under the pressing plate 2 and is connected to the corresponding connector 38; Step 3: Push the mounting frame 1 to move above the excavated asphalt pavement, then connect the asphalt tank truck with the asphalt pump, connect the output pipe of the asphalt pump with the discharge pipe 7, and then rotate the adjusting rod 11 to make the pressing block 12 compress the first spring 13 to provide pressure for the pressing plate 2. At this time, the pressing plate 2 is pressed in the pit dug on the asphalt pavement, and the pressing plate 2 fits around the pit; Step 4: Rotate the rotating rod 14 so that the pressing rod 32 presses on the hose 31 to seal the end of the hose 31; Step 5: Turn on the asphalt pump to fill the feed pipe 7. The asphalt enters the bottom of the pressing plate 2 from the inside of the feed pipe 7. As the asphalt filler is filled, the pressing plate 2 gradually rises. Step 6: Turn on the vacuum pump 21, which evacuates the inside of the connecting groove 53. On the one hand, the gas in the repair pit can be reduced through the hose 31, so that the air in the asphalt becomes less and its density increases. On the other hand, part of the asphalt enters the hose 31, so that the hose 31 can enhance the tensile strength of the asphalt. When the asphalt surface is flush with the ground, the asphalt pump and the vacuum pump 21 can be turned off, and then the limit rod 34 is pressed to make the cutter 33 cut off the hose 31. Step 7: Press the control switch 25 to start the electric winch 44. During the operation of the electric winch 44, the connecting rope 42 is pulled to pull the connecting shaft 46, thereby driving the support wheel 18 to move. During the movement of the support wheel 18, one end of the mounting frame 1 will be gradually lifted, so that one end of the pressing plate 2 is lifted first, and then the pressing plate 2 is gradually separated from the asphalt surface along the lifted end, thereby reducing the tension generated during the separation of the pressing plate 2 and the asphalt. After the pressing plate 2 is separated from the asphalt surface, the asphalt pavement is repaired.

[0030] Technical features not described in the present invention can be implemented by existing technologies and will not be described in detail here. The present invention is not limited to the above specific embodiments, and changes, modifications, additions or substitutions made by ordinary technicians in the field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A road finishing machine, characterized by: The invention comprises a mounting frame (1), wherein support frames (3) are arranged at the four corners of the mounting frame (1), an oil cylinder is arranged inside the support frame (3), and the end of the piston rod (4) of the oil cylinder is connected to a walking wheel (5), a pressing cavity is opened through the inside of the mounting frame (1), a pressing plate (2) for pressing the asphalt filler is arranged inside the pressing cavity, and the pressing plate (2) is located inside the pressing cavity and slides up and down, mounting blocks (9) are arranged at the four corners of the top of the mounting frame (1), a mounting groove (10) is arranged inside the mounting block (9), a connecting block (8) is fixedly connected to the end of the pressing plate (2), the connecting block (8) is slidably connected to the mounting groove (10), and a first spring (13) is arranged on the top of the connecting block (8), A mounting hole is provided at the top of the mounting block (9), an adjusting rod (11) is threadedly connected to the mounting hole, a pressing block (12) is provided at the bottom of the adjusting rod (11) for pressing a first spring (13) to provide pressure to the pressing plate (2), the adjusting rod (11) and the pressing block (12) are rotatably connected, a scale (43) is provided on the mounting block (9) for marking the position of the pressing block (12), a feed pipe (7) for filling asphalt filler is provided at the top of the pressing plate (2), the feed pipe (7) is used to be connected to an asphalt pump, the feed pipe (7) passes through the pressing plate (2) and is connected to the bottom thereof, and four plug rods are provided at the bottom of the mounting frame (1) for marking the pressing range of the pressing plate (2).

2. The road finishing machine according to claim 1, characterized in that: One side of the mounting frame (1) is provided with storage boxes (26) distributed at intervals, the inner wall of the pressing cavity is provided with outlet grooves (301) corresponding to the positions of the storage boxes (26) and having an equal number of outlet grooves (301), a rotatably connected winding roller (52) is provided inside the storage box (26), a hose (31) is wound around the winding roller (52), a punching device for punching holes in the hose (31) is provided inside the outlet groove (301), a vacuum device for providing suction to the hose (31) after the holes are punched is provided on the inner wall of the pressing cavity on the side opposite to the outlet groove (301), and the hose (31) passes through the bottom of the pressing plate (2) after the holes are punched and is connected to the vacuum device.

3. The road finishing machine according to claim 2, characterized in that: The inner cavity of each outlet groove (301) is rotatably connected to a rotating roller (29) and a rotating block (27); a receiving groove (30) for the hose (31) to pass through is provided on the rotating roller (29); and inserting tubes (28) for punching holes in the hose (31) are distributed at intervals on the circumference of the rotating block (27); when the hose (31) passes through the receiving groove (30), the rotating roller (29) and the rotating block (27) are driven to rotate synchronously, so that the inserting tube (28) punches holes in the hose (31); and anti-slip protrusions are also provided on the circumference of the receiving groove (30).

4. The road finishing machine according to claim 3, characterized in that: The vacuum extraction device comprises a vacuum pump (21); a placement plate (20) is provided on the top of the mounting frame (1); the vacuum pump (21) is fixed on the placement plate (20); a socket (37) corresponding to the outlet groove (301) is provided on the mounting frame (1); a connector (38) for connecting to a hose (31) is provided inside the socket (37); a connecting groove (53) for connecting the connectors (38) in sequence is provided inside the mounting frame (1); a connecting pipe (22) connected to the inside of the connecting groove (53) is provided on the top of the mounting frame (1); the connecting pipe (22) is connected to the vacuum pump (21).

5. The road finishing machine according to claim 4, characterized in that: The jack (37) is provided with upper and lower corresponding arc blocks (47) inside, and the ends of the arc blocks (47) are fixedly connected with connecting ear plates (49). The arc blocks (47) are symmetrically arranged on the circumference of the connector (38). The two connecting ear plates (49) at corresponding positions in the two arc blocks (47) are connected by a connecting rod (54). The connecting rod (54) passes through the two connecting ear plates (49), and the two ends of the connecting rod (54) are respectively threadedly connected to the limiting nuts (50). A third spring (48) is sleeved on the upper portion (54) for separating the two arc-shaped blocks (47). Two slots (19) are correspondingly provided on the side of the mounting frame (1). A connecting hole is provided between the insertion hole (37) and the slot (19). The top of the arc-shaped block (47) extends out from the connecting hole. A ball (51) is provided at the extended end of the top of the arc-shaped block (47). An insertion rod (39) for pushing the ball (51) to squeeze the arc-shaped block (47) is slidably connected inside the slot (19).

6. The road finishing machine according to claim 5, characterized in that: The mounting frame (1) is provided with mounting grooves (16) on both sides of the end portion close to the outlet groove (301), wherein one of the mounting grooves (16) is rotatably connected to one end of the rotating rod (14), a grip (15) is provided at the end portion of the rotating rod (14), a pressing rod (32) for pressing the hose (31) is provided at the bottom of the rotating rod (14), a cutting groove penetrating to the bottom of the pressing rod (32) is provided at the top of the rotating rod (14), a cutting knife (33) slidably connected is provided inside the cutting groove, a limiting rod (34) is provided at the top of the cutting knife (33), movable columns (35) extending downward and inserted into the rotating rod (14) are provided at both ends of the limiting rod (34), the movable column (35) is slidably connected to the rotating rod (14), a second spring (36) is sleeved on the movable column (35), and the second spring (36) is located between the limiting rod (34) and the rotating rod (14).

7. The road finishing machine according to claim 6, characterized in that: Both sides of the mounting frame (1) are provided with sliding grooves (17), one end of the sliding groove (17) extends obliquely upward along the side of the mounting frame (1), a slidingly connected roller (45) is provided inside the sliding groove (17), a rotatably connected connecting shaft (46) is provided on the roller (45), and a supporting wheel (18) is provided on one end of the connecting shaft (46) located outside the sliding groove (17), and an electric winch (44) is provided inside the mounting frame (1), and the electric winch (44) pulls the supporting wheel (18) to move along the sliding groove (17) through a connecting rope (42), and when the supporting wheel (18) moves along the sliding groove (17), it drives the mounting frame (1) to be gradually lifted along one side so that the asphalt is gradually separated from the bottom surface of the pressing plate (2), and a control switch (25) for controlling the synchronous operation of the electric winches (44) on both sides is provided on the side of the mounting frame (1).

8. The road finishing machine according to claim 7, characterized in that: A handle (6) is provided on the top of the pressing plate (2).

9. A road finishing method based on the road finishing machine according to any one of claims 1 to 8, comprising the following steps: Step 1: Move the mounting frame (1) to the top of the asphalt pavement to be repaired, and control the mounting frame (1) to descend by means of a hydraulic cylinder so that the insertion rod is inserted into the ground to mark the working range of the pressing plate (2). After the marking is completed, the mounting frame (1) is raised and pushed away by means of the hydraulic cylinder, and then the staff digs up and cleans the asphalt pavement to be repaired; Step 2: Pull the hose (31) out of the storage box (26) in sequence, and make the hose (31) be punched by a punching device, and the punched hose (31) is passed through the bottom of the pressing plate (2) and connected to the corresponding connector (38); Step 3: Push the mounting frame (1) to move above the excavated asphalt pavement, then connect the asphalt tank truck to the asphalt pump, and then connect the output pipe of the asphalt pump to the feed pipe (7), and then rotate the adjustment rod (11) so that the pressing block (12) compresses the first spring (13) to provide pressure for the pressing plate (2). At this time, the pressing plate (2) is pressed into the pit dug in the asphalt pavement, and the pressing plate (2) fits the periphery of the pit; Step 4: Rotate the rotating rod (14) so ​​that the pressing rod (32) presses on the top of the hose (31) to seal the end of the hose (31); Step 5: Turn on the asphalt pump to fill the feed pipe (7), and the asphalt enters the bottom of the pressing plate (2) from the inside of the feed pipe (7). As the asphalt filler is filled, the pressing plate (2) gradually rises; Step 6: Turn on the vacuum pump (21), and the vacuum pump (21) evacuates the interior of the connecting groove 53. On the one hand, the gas in the repair pit can be reduced through the hose (31), so that the air in the asphalt becomes less and the density of the asphalt itself is increased. On the other hand, part of the asphalt enters the hose (31), so that the hose (31) can enhance the tensile strength of the asphalt. When the asphalt surface is flush with the ground, the asphalt pump and the vacuum pump (21) can be turned off, and then the limit rod (34) is pressed to make the cutter (33) cut off the hose (31); Step 7: Press the control switch (25) to start the electric winch (44). During the operation of the electric winch (44), the connecting rope (42) is pulled to pull the connecting shaft (46), thereby driving the support wheel (18) to move. During the movement of the support wheel (18), one end of the mounting frame (1) is gradually lifted, so that one end of the pressing plate (2) is first lifted, and then the pressing plate (2) is gradually separated from the asphalt surface along the lifted end, thereby reducing the tension generated during the separation of the pressing plate (2) and the asphalt. After the pressing plate (2) is separated from the asphalt surface, the asphalt pavement is finished.

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