Asphalt pavement milling device

Abstract

This application relates to an asphalt pavement milling device, which is used in the field of pavement maintenance. The device comprises a mobile vehicle and a roller. The mobile vehicle is equipped with a drive motor for driving the roller to rotate. The device also comprises a plurality of curved milling cutters arranged in an array along the circumference of the roller and fixedly mounted to the roller via a connecting mechanism. This device is effective in reducing the probability of re-cracking of the pavement after repair due to insufficient bonding between the new and old pavements and insufficient compaction of the mixture, which occurs under repeated rolling of vehicles.

Description

Technical Field

[0001] The present application relates to the field of road maintenance, and in particular to an asphalt road milling device. Background Art

[0002] Asphalt pavements are subject to repeated traffic over extended periods, and they are prone to surface damage such as cracks and potholes. These defects require repair before they can be used again. Currently, during asphalt pavement maintenance, cracks are often treated with simple grouting with cementitious materials. Once cracks develop again and form a network of damage, potholes are treated accordingly. Potholes are typically treated with a milling machine to remove the loose, damaged sections of the old pavement and then refilled with asphalt concrete, ensuring a good bond between the new and old surfaces.

[0003] An asphalt pavement milling machine in the related technology includes a mobile vehicle, a roller and several milling heads. The roller is rotatably connected to the bottom of the mobile vehicle, and the several milling heads are evenly distributed on the roller. The several milling heads are arrayed along the circumference of the roller. The mobile vehicle is provided with a power source for driving the roller to rotate. When the road surface needs to be milled, the construction workers push the mobile vehicle to move on the road surface to be constructed, and at the same time use the power source to drive the roller to rotate, and then the road surface is milled by the several milling heads, and the cracks in the road surface are milled to form potholes with vertical boundaries.

[0004] Regarding the above-mentioned related technologies, the inventors believe that the following defects exist: the working surface of the above-mentioned milling machine is relatively wide and is not suitable for treating road cracks. Instead, it mills the road cracks or potholes to form potholes with vertical boundaries. After the potholes are repaired later, the repaired road surface is easily subjected to the pressure of vehicles during driving, resulting in insufficient bonding between the new and old road surfaces and insufficient compaction of the mixture, which may cause cracking again. Summary of the Invention

[0005] In order to supplement the treatment of crack diseases and improve the problem of re-cracking of the road surface after repair of potholes and cracks due to insufficient bonding between the new and old road surfaces and insufficient compaction of the mixture, the present application provides an asphalt pavement milling device.

[0006] The asphalt pavement milling device provided in this application adopts the following technical solution:

[0007] An asphalt pavement milling device includes a mobile vehicle and a roller. The mobile vehicle is provided with a drive motor for driving the roller to rotate. The mobile vehicle also includes a plurality of arc-shaped milling cutters. The plurality of arc-shaped milling cutters are arrayed along the circumference of the roller. The arc-shaped milling cutters are fixedly mounted on the roller via a connecting mechanism.

[0008] By adopting the above technical solution, before construction, an arc milling cutter of appropriate size is selected according to the size of the road crack, and then the arc milling cutter is fixedly installed on the roller using a connecting mechanism.

[0009] The construction workers move the mobile vehicle to the cracks in the road surface and then start the drive motor. The drive motor drives the roller to rotate and mills the cracks in the road surface through a number of arc-shaped milling cutters. Then, as the mobile vehicle moves, the arc-shaped milling cutters mill the road surface to form arc-shaped grooves. The arc-shaped grooves are used to facilitate the subsequent repair of the arc-shaped grooves, which helps to increase the connection area with the old road surface, so that the vehicles traveling on the road surface during the operation of the road surface can compact the repaired road surface, reducing the probability of re-cracking due to insufficient bonding and insufficient compaction of the new and old road surfaces after the road surface repair, and helping to improve the compaction efficiency and adhesion of the road surface.

[0010] In a specific feasible implementation scheme, the connecting mechanism includes a mounting block and two telescopic columns, the mounting block is arranged on the side wall of the arc milling cutter, the side wall of the roller is provided with a mounting groove for inserting the mounting block, the mounting groove is connected to the inside of the roller, the side wall of the mounting block is penetrated by a telescopic groove, the two telescopic columns are relatively slidably arranged on the groove wall of the telescopic groove, the groove wall of the telescopic groove is provided with a reset block located between the two telescopic columns, the reset block and the two telescopic columns are connected to each other by a spring, the groove wall of the telescopic groove is provided with a spacing component for positioning the distance between the two telescopic columns, the axial direction of the telescopic column is in the same direction as the axial direction of the roller, and the roller is provided with a connecting component for fixedly connecting several telescopic columns.

[0011] By adopting the above technical solution, during installation, the two telescopic columns are placed in the telescopic groove. At this time, the spring is in a compressed state, so that the mounting block can be inserted into the mounting groove until the telescopic groove on the mounting block is located inside the roller. The telescopic block loses external pressure, and then the two telescopic columns slide toward the notch of the telescopic groove under the action of the elastic restoring force of the spring; then the distance between the two telescopic columns is kept stable by using the distance-fixing component, and finally the telescopic column is fixed to the inner wall of the roller by using the connecting component, and finally the mounting block is fixed in the mounting groove, so that the arc milling cutter is stably fixed on the side wall of the roller. This installation method has a simple structure and is easy to operate.

[0012] In a specific possible implementation manner, a side wall of the telescopic column is provided with a limiting groove, and a groove wall of the telescopic groove is provided with a limiting block that slides in the limiting groove.

[0013] By adopting the above technical solution, the cooperation between the limit block and the limit slot limits the sliding direction of the telescopic column in the limit slot, which helps to prevent the elastic restoring force of the spring from being too large and pushing the telescopic column out of the telescopic slot.

[0014] In a specific feasible implementation scheme, the distance component includes a first electromagnet and a first permanent magnet, the first permanent magnet is arranged on the side wall of the limit block, the first electromagnet is arranged on the slot wall of the limit slot, and the first electromagnet is magnetically adsorbed and connected to the first permanent magnet.

[0015] By adopting the above technical solution, when the free end of the telescopic column extends out of the telescopic slot, the first electromagnet is connected to the power supply, the first electromagnet generates an electromagnetic field, and then the first permanent magnet is magnetically adsorbed and connected to the first electromagnet, so that the limit block is stably fixed in the limit slot, and finally the spacing positioning between the two telescopic columns in the telescopic slot is achieved.

[0016] In a specific possible implementation scheme, a second electromagnet is provided on the side wall of the reset block, and a second permanent magnet is provided on the side walls of the two telescopic columns facing the reset block.

[0017] By adopting the above technical solution, the second electromagnet is connected to the power supply, the second electromagnet generates an electromagnetic field, and then the second permanent magnet drives the telescopic column to slide toward the reset block, thereby realizing the reset of the telescopic column and allowing the mounting block to be inserted into the mounting slot.

[0018] In a specific possible implementation scheme, the connecting assembly includes two connecting sleeves relatively arranged in the roller, and several telescopic columns constitute two groups of threaded parts, one group of the threaded parts is arranged on the side wall of the mounting block facing the drive motor, and the other group of the threaded parts is arranged on the side wall of the mounting block away from the drive motor. The two groups of threaded parts correspond one-to-one to the two connecting sleeves respectively, and the connecting sleeve is used to connect the connecting sleeve to several telescopic columns of the threaded parts. The telescopic columns are provided with connecting threads that cooperate with the connecting sleeves, and the roller is provided with a rotating part for driving the connecting sleeve to rotate and a displacement part for driving the rotating part to slide along the axial direction of the telescopic column.

[0019] By adopting the above technical solution, the connecting sleeve is driven to rotate by the rotating member, and the rotating member is driven to slide along the circumferential direction of the telescopic column by the displacement member, so that the connecting sleeve moves toward the telescopic column while rotating, so that the connecting sleeve is threadedly connected to the several telescopic columns of the threaded member, so that the several telescopic columns are fixed inside the roller.

[0020] In a specific possible implementation scheme, the rotating member includes a reduction motor, and the drive shaft of the reduction motor is coaxially and fixedly connected to the connecting sleeve.

[0021] By adopting the above technical solution, the reduction motor is started, and the reduction motor drives the connecting sleeve to rotate. When the reduction motor is then driven by the displacement member to move along the axial direction of the telescopic column, the connecting sleeve rotates so as to be threadedly connected to the plurality of telescopic columns.

[0022] In a specific possible implementation scheme, the displacement member includes a swing plate, two linkage rods and two sliding plates, the swing plate is rotatably connected to the inner wall of the roller, the two linkage rods are relatively arranged on the swing plate, the two linkage rods are hingedly connected to the swing plate, the two sliding plates are relatively slidingly connected to the inner wall of the roller, the two sliding plates are respectively corresponding to the two linkage rods, the end of the linkage rod away from the swing plate is hingedly connected to the sliding plate, the two reduction motors are respectively corresponding to the two reduction motors, the reduction motor is arranged on the sliding plate, the inner wall of the roller is provided with an electric cylinder, and the piston rod of the electric cylinder is connected to one of the sliding plates.

[0023] By adopting the above technical solution, the electric cylinder is started, and the electric cylinder drives one of the sliding plates to slide toward the swing plate, and then the swing plate is driven to rotate through the linkage rod on one of the sliding plates, so that the swing plate drives the other sliding plate to slide toward the swing plate through another linkage rod. At this time, the two sliding plates approach each other so that as the connecting sleeve rotates, the connecting sleeve is threadedly connected to several telescopic columns.

[0024] In a specific possible implementation manner, the inner cylinder wall of the roller is provided with two opposing guide rods, the two sliding plates are located between the two guide rods, and the side walls of the sliding plates are provided with guide blocks that slide on the guide rods.

[0025] By adopting the above technical solution, the cooperation between the guide rod and the guide block plays a role in guiding and limiting the sliding of the sliding plate in the roller.

[0026] In a specific feasible implementation scheme, a first vertical plate and a second vertical plate are arranged opposite to each other on the mobile vehicle, the roller is rotatably connected between the opposite side walls of the first vertical plate and the second vertical plate, the driving motor is mounted on the first vertical plate, the driving shaft of the driving motor passes through the first vertical plate and is coaxially fixedly connected to one end of the roller, and the other end of the roller is rotatably connected to the side wall of the second vertical plate.

[0027] By adopting the above technical solution, the first vertical plate and the second vertical plate are arranged so that the roller can be stably supported on the bottom of the mobile vehicle.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] 1. Use several curved milling cutters to mill the road surface to form curved grooves. This will help increase the connection area with the old road surface when the curved grooves are subsequently repaired. During the operation of the road surface, vehicles traveling on the road surface will compact the repaired road surface, reducing the probability of re-cracking due to insufficient compaction after the road surface is repaired, and helping to improve the compaction efficiency of the road surface and the adhesion of the mixture.

[0030] 2. After the mounting block is inserted into the mounting slot, the two telescopic columns in the telescopic slot extend into the roller under the action of the elastic return force of the spring. The distance between the two telescopic columns is then maintained stable using the distance component. Finally, the telescopic columns are fixed to the inner wall of the roller using the connection component. Ultimately, the mounting block is fixed in the mounting slot, so that the curved milling cutter is stably fixed to the side wall of the roller. This installation method facilitates the removal and replacement of the milling cutter, so that the appropriate size of milling cutter can be selected according to the size of the road crack.

[0031] 3. While the drive connecting sleeve rotates, the drive connecting sleeve moves toward the telescopic column so that the connecting sleeve is threadedly connected to the telescopic columns of the threaded part, so that the telescopic columns are fixed inside the roller, and then the mounting block is fixed in the mounting groove, finally realizing the installation of the arc milling cutter. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the overall structure of the asphalt pavement milling device in an embodiment of the present application.

[0033] Figure 2 This is a structural diagram illustrating the positional relationship between the arc-shaped milling cutter and the roller in an embodiment of the present application.

[0034] Figure 3 For the Figure 2 Schematic diagram of the cross-sectional structure along the AA direction.

[0035] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0036] Figure 5 This is a schematic cross-sectional structural diagram of the distance component in the embodiment of the present application.

[0037] Figure 6 For the Figure 2 Schematic diagram of the cross-sectional structure along the BB direction.

[0038] Figure 7 for Figure 6 Enlarged view of point B in the middle.

[0039] Figure 8 for Figure 6 Enlarged view of point C in the middle.

[0040] Figure 9 This is a schematic diagram of the specific structure that reflects the positional relationship between the swing plate and the two linkage rods in the embodiment of the present application.

[0041] Explanation of the accompanying drawings: 1. Moving vehicle; 2. Roller; 3. Driving motor; 4. Arc milling cutter; 5. Connecting mechanism; 51. Mounting block; 52. Telescopic column; 53. Mounting slot; 54. Telescopic slot; 55. Reset block; 56. Spring; 6. Limit block; 7. Limit slot; 8. Distance assembly; 81. First electromagnet; 82. First permanent magnet; 83. Second electromagnet; 84. Second permanent magnet; 9. Connecting assembly; 91. Connecting sleeve; 92. Reducer motor; 10. Displacement member; 101. Swinging plate; 102. Linking rod; 103. Sliding plate; 104. Electric cylinder; 11. Guide rod; 12. Guide block; 13. First vertical plate; 14. Second vertical plate. DETAILED DESCRIPTION

[0042] The following is combined with Figure 1-9 This application is described in further detail.

[0043] The embodiment of the present application discloses an asphalt pavement milling device. Figure 1 and Figure 2 The asphalt pavement milling device includes a mobile vehicle 1. A first vertical plate 13 and a second vertical plate 14 are disposed at the bottom of the mobile vehicle 1. A roller 2 is rotatably connected between the opposing side walls of the first and second vertical plates 13, 14. The roller 2 is disposed horizontally. A drive motor 3 is fixedly mounted on the side wall of the first vertical plate 13 away from the roller 2. The drive shaft of the drive motor 3 passes through the side wall of the first vertical plate 13 and is coaxially fixedly connected to the roller 2.

[0044] Reference Figure 2 and Figure 3 The peripheral wall of the roller 2 is provided with a plurality of arc-shaped milling cutters 4 in an array along its own circumference. The arc-shaped milling cutters 4 are fixedly mounted on the roller 2 through a connecting mechanism 5.

[0045] When it is necessary to repair cracks in the road surface, an arc milling cutter 4 of appropriate size is selected in advance, and the arc milling cutter 4 is fixedly installed on the side wall of the roller 2 using the connecting mechanism 5; then the drive motor 3 is started, and the drive motor 3 drives the roller 2 to rotate, so that the road surface is milled by a number of arc milling cutters 4 to form arc grooves, and then when the arc grooves are subsequently repaired, it helps to increase the connection area between the repaired new road surface and the old road surface, so that vehicles traveling on the road surface during road operation compact the repaired road surface, reducing the probability of re-cracking due to insufficient bonding and insufficient compaction of the new and old road surfaces after the road surface is repaired, and helping to improve the compaction efficiency of the road surface and the adhesion of the mixture.

[0046] Reference Figure 3 、 Figure 4 and Figure 5There are several groups of connecting mechanisms 5, and several groups of connecting mechanisms 5 correspond one-to-one to several arc milling cutters 4 respectively. One group of connecting mechanisms 5 includes a mounting block 51 and two telescopic columns 52. The mounting block 51 is arranged on the side wall of the arc milling head. The peripheral wall of the roller 2 is provided with several mounting grooves 53, and the several mounting grooves 53 correspond one-to-one to several arc milling cutters 4 respectively. The mounting grooves 53 are connected to the interior of the roller 2, and the mounting grooves 53 are used for allowing the mounting block 51 to extend into the interior of the roller 2. A telescopic slot 54 is provided through the side wall of the mounting block 51, and two telescopic columns 52 are relatively slidably arranged on the slot wall of the telescopic slot 54. The axial direction of the telescopic column 52 is in the same direction as the axial direction of the roller 2. A reset block 55 is fixedly provided on the slot wall of the telescopic slot 54 and located between the two telescopic columns 52. The reset block 55 is connected to the opposite side wall of the telescopic column 52 by a spring 56. The spring 56 is used to provide a force for the telescopic column 52 to slide out of the telescopic slot 54. A distance component 8 for positioning the distance between the two telescopic columns 52 is provided in the telescopic slot 54, and a connecting component 9 for fixedly connecting several telescopic columns 52 is provided in the roller 2.

[0047] During installation, the free end of the telescopic column 52 is extended into the telescopic groove 54. At this time, the spring 56 is in a compressed state, so that the mounting block 51 can be inserted into the mounting groove 53, and the mounting block 51 is located at the position of the telescopic groove 54 and extended into the interior of the roller 2. At this time, in the absence of external force, the telescopic column 52 uses the elastic reset force of the spring 56 to make the free end of the telescopic column 52 extend out of the telescopic groove 54, and then the distance between the two telescopic columns 52 is fixed by the distance component 8, which helps to prevent the free end of the telescopic column 52 from sliding into the telescopic groove 54. Finally, the connecting component 9 is used to fix the telescopic column 52 in the roller 2, so that the mounting block 51 is fixed in the mounting groove 53, and finally the installation of the arc milling cutter 4 is realized.

[0048] Reference Figure 4 and Figure 5 The side wall of the telescopic column 52 is provided with a limit groove 7 along its own axial direction, and the groove wall of the telescopic groove 54 is provided with a limit block 6 that slides in the limit groove 7; the cooperation between the limit block 6 and the limit groove 7 guides and limits the sliding direction of the telescopic column 52; by providing the limit block 6, it helps to prevent the telescopic column 52 from falling out of the telescopic groove 54.

[0049] In this embodiment, the distance component 8 includes a first electromagnet 81 and a first permanent magnet 82. The first permanent magnet 82 is fixedly arranged on the side wall of the limit block 6, and the first electromagnet 81 is embedded in the slot wall of the telescopic slot 54; when the free end of the telescopic column 52 slides out of the telescopic slot 54, and when the spring 56 remains in a stable state, the first permanent magnet 82 and the first electromagnet 81 are at opposite side walls. At this time, the first electromagnet 81 is powered on, and the first electromagnet 81 generates an electromagnetic field, and then the first permanent magnet 82 is magnetically adsorbed and fixed on the first electromagnet 81, thereby realizing the positioning of the limit block 6 in the limit slot 7, so as to keep the distance between the two telescopic columns 52 stable.

[0050] Reference Figure 4 In order to facilitate the removal of the mounting block 51 from the mounting groove 53, second electromagnets 83 are provided on both side walls of the reset block 55, and second permanent magnets 84 are provided on the side walls of the two telescopic columns 52 facing the second electromagnets 83; when the second electromagnets 83 are powered on, the second electromagnets 83 generate an electromagnetic field, which in turn drives the telescopic columns 52 to slide into the telescopic groove 54, so that the free ends of the telescopic columns 52 extend into the telescopic groove 54, thereby facilitating the removal of the mounting block 51 from the mounting groove 53.

[0051] Reference Figure 4 and Figure 6 The connecting assembly 9 includes two connecting sleeves 91, which are arranged relative to each other inside the roller 2. The axial direction of the connecting sleeves 91 is in the same direction as the axial direction of the telescopic columns 52. In this embodiment, two sets of threaded members are provided inside the roller 2, and the two sets of threaded members correspond one-to-one with the two connecting sleeves 91. One set of threaded members includes the telescopic columns 52 on the side of the mounting blocks 51 inside the roller 2 away from the drive motor 3, and the other set of threaded members includes the telescopic columns 52 on the side of the mounting blocks 51 inside the roller 2 facing the drive motor 3.

[0052] In this embodiment, the inner side wall of the connecting sleeve 91 and the side walls of the telescopic columns 52 are provided with mutually cooperating connecting threads, and the roller 2 is provided with a rotating part for driving the connecting sleeve 91 to rotate and a displacement part 10 for driving the rotating part to slide axially along the telescopic column 52.

[0053] When the free end of the telescopic column 52 extends into the interior of the roller 2 and the spacing between the two telescopic columns 52 in the telescopic groove 54 is positioned, the rotating member is used to drive the connecting sleeve 91 to rotate, and the displacement member 10 is used to drive the connecting sleeve 91 to move toward the multiple telescopic columns 52, so that the connecting sleeve 91 is threadedly connected to the multiple telescopic columns 52, thereby fixing the mounting block 51 in the mounting groove 53, thereby realizing the fixed installation of the arc milling cutter 4.

[0054] Reference Figure 6There are two groups of rotating parts, and the two groups of rotating parts correspond to the two connecting sleeves 91 one by one. One group of rotating parts includes a reduction motor 92, and the drive shaft of the reduction motor 92 is coaxially fixedly connected to the connecting sleeve 91; start the reduction motor 92, and the reduction motor 92 drives the connecting sleeve 91 to rotate so that the connecting sleeve 91 is threadedly connected to the plurality of telescopic columns 52.

[0055] Reference Figure 6 、 Figure 7 and Figure 8 The displacement member 10 includes a swing plate 101, two linkage rods 102 and two sliding plates 103. The swing plate 101 is rotatably connected to the side wall of the roller 2. The swing plate 101 in this embodiment is a fan-shaped plate, and the two linkage rods 102 are relatively arranged along the length direction of the swing plate 101. The two linkage rods 102 correspond to the two sliding plates 103 one by one. The two sliding plates 103 are both slidably arranged on the inner cylinder wall of the roller 2, and the two sliding plates 103 are relatively arranged along the axial direction of the roller 2. The swing plate 101 is located between the two sliding plates 103, one end of the linkage rod 102 is hingedly connected to the swing plate 101, and the other end of the linkage rod 102 is hingedly connected to the sliding plate 103. An electric cylinder 104 is fixedly installed on the inner cylinder wall of the roller 2, and the piston rod of the electric cylinder 104 is connected to one of the sliding plates 103. The telescopic direction of the piston rod of the electric cylinder 104 is in the same direction as the axial direction of the roller 2. The two sliding plates 103 correspond to the two reduction motors 92 respectively, and the bodies of the reduction motors 92 are fixedly mounted on the side walls of the sliding plates 103 .

[0056] The electric cylinder 104 is started, and the piston rod of the electric cylinder 104 is extended. The electric cylinder 104 drives one of the sliding plates 103 to slide along the axial direction of the roller 2, so that one of the sliding plates 103 slides toward the linkage rod 102, and then the linkage rod 102 on one of the sliding plates 103 drives the swing plate 101 to rotate. At the same time, the swing plate 101 drives the other sliding plate 103 to slide toward the swing plate 101 through the other linkage rod 102. At this time, the two sliding plates 103 approach each other, causing the connecting sleeve 91 to slide toward the telescopic column 52, so that the connecting sleeve 91 can be threadedly connected to the plurality of telescopic columns 52 while rotating.

[0057] In this embodiment, the angles between the two linkage rods 102 and the swing plate 101 are the same, and the two linkage rods 102 are respectively arranged opposite to the hinge points of the side walls of the two sliding plates 103, so that the electric cylinder 104 drives one of the sliding plates 103 to slide a distance that is the same as the sliding distance of the other sliding plate 103, so that the moving distances of the two connecting sleeves 91 are the same, so that the connecting sleeve 91 can be threadedly connected to the telescopic column 52.

[0058] Reference Figure 7 、 Figure 8 and Figure 9Two guide rods 11 are fixedly provided on the inner wall of the roller 2. The axial direction of the guide rods 11 is in the same direction as the axial direction of the roller 2. The side walls of the two sliding plates 103 are located between the two guide rods 11. The side walls of the sliding plates 103 are provided with guide blocks 12 that slide on the guide rods 11; the cooperation between the guide blocks 12 and the guide rods 11 realizes the sliding connection between the sliding plates 103 and the inner wall of the roller 2.

[0059] The implementation principle of an asphalt pavement milling device in an embodiment of the present application is as follows: first, an arc-shaped milling cutter 4 of appropriate size is selected according to the size specifications of the pavement crack, and then the second electromagnet 83 is powered on, the second electromagnet 83 generates an electromagnetic field, and then the second permanent magnet 84 drives the telescopic column 52 to slide into the telescopic slot 54. At this time, the mounting block 51 can be inserted into the mounting slot 53, and then the second electromagnet 83 is powered off. At this time, the telescopic column 52 extends out of the telescopic slot 54 under the elastic force of the spring 56. At this time, the first electromagnet 81 and the first permanent magnet 82 are in contact with each other, and the first electromagnet 81 is powered on, and the first electromagnet 81 generates an electromagnetic field, thereby realizing the fixation of the limit block 6 in the limit slot 7, so as to keep the distance between the two telescopic columns 52 fixed.

[0060] Then start the electric cylinder 104, which drives one of the sliding plates 103 to slide toward the other sliding plate 103, and then drives the other sliding plate 103 to slide toward the swing plate 101 through the swing plate 101 and the linkage rod 102. At this time, the two sliding plates 103 approach each other, so that the connecting sleeve 91 gradually approaches the telescopic column 52, and at the same time start the reduction motor 92, so that the connecting sleeve 91 is threadedly connected to the plurality of telescopic columns 52, so that the mounting block 51 is fixed in the mounting groove 53, and finally the installation of the arc milling cutter 4 is realized.

[0061] Finally, the construction workers push the mobile vehicle 1 to move and start the drive motor 3 at the same time. The drive motor 3 drives the roller 2 to rotate. As the roller 2 rotates, the road surface is milled to form arc-shaped grooves through a number of arc-shaped milling cutters 4, so that when the arc-shaped grooves are repaired later, it helps to increase the connection area with the old road surface, so that the vehicles traveling on the road surface during the operation of the road surface can compact the repaired road surface, reducing the probability of cracking again due to insufficient bonding and insufficient compaction of the new and old road surfaces after the road surface is repaired, which helps to improve the compaction efficiency of the road surface and the adhesion of the mixture.

[0062] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An asphalt pavement milling device, comprising a mobile vehicle (1) and a roller (2), wherein the mobile vehicle (1) is provided with a drive motor (3) for driving the roller (2) to rotate, and characterized in that: The roller (2) further comprises a plurality of arc-shaped milling cutters (4), wherein the plurality of arc-shaped milling cutters (4) are arranged in an array along the circumference of the roller (2), and the arc-shaped milling cutters (4) are fixedly mounted on the roller (2) via a connecting mechanism (5); the connecting mechanism (5) comprises a mounting block (51) and two telescopic columns (52); the mounting block (51) is arranged on the side wall of the arc-shaped milling cutter (4), the side wall of the roller (2) is provided with a mounting groove (53) for inserting the mounting block (51), the mounting groove (53) is communicated with the interior of the roller (2), and a telescopic groove (54) is provided through the side wall of the mounting block (51). The two telescopic columns (52) are relatively slidably arranged on the groove wall of the telescopic groove (54); a reset block (55) is provided on the groove wall of the telescopic groove (54) and located between the two telescopic columns (52); the reset block (55) and the two telescopic columns (52) are connected via a spring (56); a spacing component (8) for positioning the distance between the two telescopic columns (52) is provided on the groove wall of the telescopic groove (54); the axial direction of the telescopic column (52) is in the same direction as the axial direction of the roller (2); and a connecting component (9) for fixedly connecting a plurality of telescopic columns (52) is provided inside the roller (2).

2. The asphalt pavement milling device according to claim 1, characterized in that: The side wall of the telescopic column (52) is provided with a limiting groove (7), and the groove wall of the telescopic groove (54) is provided with a limiting block (6) that slides in the limiting groove (7).

3. The asphalt pavement milling device according to claim 2, characterized in that: The distance component (8) comprises a first electromagnet (81) and a first permanent magnet (82), wherein the first permanent magnet (82) is arranged on the side wall of the limiting block (6), and the first electromagnet (81) is arranged on the slot wall of the limiting slot (7), and the first electromagnet (81) and the first permanent magnet (82) are connected by magnetic attraction.

4. The asphalt pavement milling device according to claim 1, characterized in that: A second electromagnet (83) is provided on the side wall of the reset block (55), and a second permanent magnet (84) is provided on the side walls of the two telescopic columns (52) facing the reset block (55).

5. The asphalt pavement milling device according to claim 1, characterized in that: The connecting assembly (9) comprises two connecting sleeves (91) relatively arranged in the roller (2); a plurality of the telescopic columns (52) constitute two groups of threaded parts, wherein one group of the threaded parts is arranged on the side wall of the mounting block (51) facing the drive motor (3); and the other group of the threaded parts is arranged on the side wall of the mounting block (51) away from the drive motor (3). The two groups of the threaded parts correspond to the two connecting sleeves (91) respectively. The connecting sleeves (91) are connected to the plurality of telescopic columns (52) of the threaded parts. The telescopic columns (52) are provided with connecting threads matching the connecting sleeves (91). A rotating part for driving the connecting sleeve (91) to rotate and a displacement part (10) for driving the rotating part to slide along the axial direction of the telescopic column (52) are provided in the roller (2).

6. The asphalt pavement milling device according to claim 5, characterized in that: The rotating member comprises a reduction motor (92), and a drive shaft of the reduction motor (92) is coaxially fixedly connected to a connecting sleeve (91).

7. The asphalt pavement milling device according to claim 6, characterized in that: The displacement member (10) comprises a swing plate (101), two linkage rods (102) and two sliding plates (103), wherein the swing plate (101) is rotatably connected to the inner wall of the roller (2), the two linkage rods (102) are relatively arranged on the swing plate (101), the two linkage rods (102) are hingedly connected to the swing plate (101), the two sliding plates (103) are relatively slidably connected to the inner wall of the roller (2), and the two sliding plates (103) are relatively slidably connected to the inner wall of the roller (2). 3) are respectively in one-to-one correspondence with two linkage rods (102), one end of the linkage rod (102) away from the swing plate (101) is hingedly connected to the sliding plate (103), the two reduction motors (92) are respectively in one-to-one correspondence with the two sliding plates (103), the reduction motors (92) are arranged on the sliding plates (103), the inner side wall of the roller (2) is provided with an electric cylinder (104), and the piston rod of the electric cylinder (104) is connected to one of the sliding plates (103).

8. The asphalt pavement milling device according to claim 7, characterized in that: The inner cylinder wall of the roller (2) is provided with two opposing guide rods (11), the two sliding plates (103) are located between the two guide rods (11), and the side walls of the sliding plates (103) are provided with guide blocks (12) that slide on the guide rods (11).

9. The asphalt pavement milling device according to claim 1, characterized in that: The mobile vehicle (1) is provided with a first vertical plate (13) and a second vertical plate (14) opposite to each other, the roller (2) is rotatably connected between the opposite side walls of the first vertical plate (13) and the second vertical plate (14), the drive motor (3) is mounted on the first vertical plate (13), the drive shaft of the drive motor (3) passes through the first vertical plate (13) and is coaxially fixedly connected to one end of the roller (2), and the other end of the roller (2) is rotatably connected to the side wall of the second vertical plate (14).

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