An asphalt road pavement repairing device and repairing method

Abstract

The application discloses an asphalt road pavement repairing device and a repairing method, and belongs to the technical field of pavement repairing devices, wherein the asphalt road pavement repairing device comprises two tracks and a supporting plate arranged between the two tracks; a hopper is fixedly installed on the top of the supporting plate; and a material guiding frame is installed on the supporting plate and is aligned with the hopper; when the device is used, the staff only needs to place two magnets in the two end positions of the area filled with asphalt in the crack, and the supporting plate can quickly pass through the area through cooperation of the second gear and the second rack, which can avoid waste of the asphalt material and improve the filling efficiency of the asphalt material; when the supporting plate moves out of the area, the supporting plate is slowly moved through cooperation of the first gear and the first rack, so that the asphalt material can be filled in other areas of the crack.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of road surface repairing devices, in particular to an asphalt road surface repairing device and method. BACKGROUND

[0002] When the construction personnel repairs the road surface gap, the molten asphalt concrete is poured into the box, the handle is dragged to move the box along the extension direction of the road surface gap, the asphalt concrete in the box seeps out from the grid structure of the bottom surface of the box and is spread on the road surface, and after the asphalt concrete hardens, the repair of the road surface gap is completed.

[0003] The patent CN218667063U discloses an operation device for repairing asphalt concrete road surface, a plurality of groups of through grooves are formed in the bottom surface of the box, a baffle is inserted into the through groove, the baffle extends to the outside of the groove, and a hinge that seals the groove is installed outside the groove; when the gap of the road surface is narrow, the baffle is inserted into the through groove, the number of through groove openings is reduced, the flow of asphalt concrete is reduced, the area of the asphalt concrete laid on the uncracked road surface is reduced, and the precise repair of the road surface gap is realized.

[0004] The above device fills the asphalt material into the crack by moving the box along the crack, but in actual use, due to the differences in the width and depth of each part of the crack, some areas in the crack are filled first, and it is difficult to adjust the moving speed of the box according to different areas of the crack through the above structure, thereby affecting the progress of road surface repair. In view of the above, the above device still needs to be improved.

[0005] Therefore, it is necessary to provide an asphalt road surface repairing device and method to solve the above technical problems. SUMMARY

[0006] The present application aims to provide an asphalt road surface repairing device and method to solve the problem that the existing device fills the asphalt material into the crack by moving the box along the crack, but in actual use, due to the differences in the width and depth of each part of the crack, some areas in the crack are filled first, and it is difficult to adjust the moving speed of the box according to different areas of the crack through the above structure.

[0007] Based on the above idea, the present application provides the following technical scheme: an asphalt road surface repairing device, comprising two tracks and a support plate arranged between the two tracks, a hopper is fixedly installed on the top of the support plate, a guide frame aligned with the hopper is installed on the support plate, a rotating shaft is installed on the support plate, a first gear and a second gear are sleeved on the outside of the rotating shaft, a first gear rack engaged with the first gear and a second gear rack engaged with the second gear are fixedly arranged on the track;

[0008] The rotating shaft is elastically mounted with a sliding rod, a magnetic block is fixedly embedded at the bottom end surface of the sliding rod, the rotating shaft is provided with a clamping assembly matched with the first gear and the second gear, a limiting rod is coaxially arranged at the sliding rod, the limiting rod is fixedly connected with the rotating shaft, and the sliding rod and the limiting rod are matched through a limiting assembly, in the process of reciprocating movement of the sliding rod in the vertical direction, the limiting assembly arranged can drive the intermittent rotation of the sliding rod, and in this process, the clamping assembly can alternately cooperate with the first gear and the second gear.

[0009] As a further scheme of the present application: the clamping assembly comprises a first clamping block and a second clamping block elastically arranged at the outer side wall of the rotating shaft, the first clamping block is located at the inner side position of the first gear, and the second clamping block is located at the inner side position of the second gear, and a plurality of notches are formed in the inner walls of the first gear and the second gear.

[0010] As a further scheme of the present application: a first magnetic strip is fixedly embedded at one end surface of the first clamping block close to the sliding rod, a second magnetic strip is fixedly embedded at one end surface of the second clamping block close to the sliding rod, the side of the first magnetic strip and the second magnetic strip close to the sliding rod has different magnetic poles, a first magnetic plate and a second magnetic plate are fixedly embedded at the outer side wall of the sliding rod, the number of the first magnetic plate and the second magnetic plate is multiple, the outer side wall of the first magnetic plate and the second magnetic plate has different magnetic poles, the first magnetic plate and the second magnetic plate are staggered, the side of the first magnetic plate opposite to the first magnetic strip has the same magnetic pole, and the side of the second magnetic plate opposite to the first magnetic strip has different magnetic poles.

[0011] As a further scheme of the present application: the limiting assembly comprises a limiting block fixedly matched with the sliding rod, a plurality of inclined grooves and a plurality of straight grooves are formed in the outer side wall of the limiting rod, the inclined grooves and the straight grooves are connected in head-to-tail mode, and the limiting block can circularly slide along the inclined grooves and the straight grooves.

[0012] As a further scheme of the present application: a first inclined plate is elastically arranged at the junction of the top end of the inclined groove and the top end of the straight groove, the first inclined plate is hinged with the limiting rod, and the position where the first inclined plate is hinged with the limiting rod is located on the side of the first inclined plate away from the straight groove, a second inclined plate is elastically arranged at the junction of the bottom end of the straight groove and the bottom end of the inclined groove, the second inclined plate is hinged with the limiting rod, and the position where the second inclined plate is hinged with the limiting rod is located on the side of the second inclined plate away from the inclined groove.

[0013] As a further scheme of the present application: a plurality of insertion holes are uniformly formed in the side of the track opposite to the rotating shaft.

[0014] As a further scheme of the present application: an installation hole is formed in the bottom end surface of the rotating shaft, and the sliding rod is slidingly arranged in the installation hole.

[0015] As a further scheme of the present application, the top end surface of the slide rod is rotatably provided with an annular plate, and a second spring is fixed between the annular plate and the top wall of the mounting hole.

[0016] As a further scheme of the present application, a through slot is formed in the support plate, and the material guiding frame is located at the through slot.

[0017] A method for repairing using the asphalt road pavement repairing device, comprising the following steps: laying tracks on both sides of a road crack, and installing a support plate between the two tracks; driving the support plate to slowly move on the tracks by cooperation of the first gear and the first rack, and guiding the asphalt in the hopper into the road crack by the material guiding frame; and driving the support plate to quickly pass through the area filled with asphalt in the crack by cooperation of the second gear and the second rack.

[0018] Compared with the prior art, the present application has the following beneficial effects: when the device is used, the staff only needs to place two magnets at both ends of the area filled with asphalt in the crack, and the support plate can quickly pass through the area by cooperation of the second gear and the second rack, which can avoid waste of asphalt materials and improve the filling efficiency of the asphalt materials; after the support plate moves out of the area, the support plate slowly moves by cooperation of the first gear and the first rack, which is beneficial to filling the asphalt materials in other areas of the crack. BRIEF DESCRIPTION OF DRAWINGS

[0019] The present application will be further described below in combination with the drawings and embodiments:

[0020] Figure 1 is a schematic diagram of the overall structure of the present application;

[0021] Figure 2 is a schematic diagram of the first rack and the second rack structure of the present application;

[0022] Figure 3 is a schematic diagram of the first gear and the second gear structure of the present application;

[0023] Figure 4 is a sectional view of the shaft and the track of the present application;

[0024] Figure 5 is a schematic diagram of the enlarged structure at A of the present application; Figure 4

[0025] Figure 6 is a schematic diagram of the enlarged structure at B of the present application; Figure 5

[0026] Figure 7 is a schematic diagram of the straight slot and the inclined slot structure of the present application;

[0027] Figure 8 ​​It is the first inclined plate and the second inclined plate structure schematic diagram of the application;

[0028] Figure 9 It is the first magnetic plate and the second magnetic plate distribution diagram of the application;

[0029] Figure 10 It is the guide frame structure schematic diagram of the application;

[0030] Figure 11 It is the road surface crack schematic diagram of the application.

[0031] In the figure: 1, hopper; 2, support plate; 3, transmission unit; 4, track; 401, jack; 402, first rack; 403, second rack; 5, guide frame; 501, guide block; 6, sliding block; 7, rotating shaft; 701, first gear; 702, second gear; 8, annular plate; 9, limiting rod; 901, inclined slot; 902, straight slot; 10, notch; 11, second clamping block; 1101, second magnetic stripe; 12, sliding rod; 1201, magnetic block; 1202, limiting block; 13, protruding block; 14, first clamping block; 1401, first magnetic stripe; 15, first inclined plate; 16, second inclined plate; 17, first magnetic plate; 18, second magnetic plate; 19, control switch. DETAILED DESCRIPTION

[0032] As Figures 1-10 shown, an asphalt road pavement repairing device and method, comprising two tracks 4 and a support plate 2 arranged between the two tracks 4, the support plate 2 can move along the length direction of the track 4, a hopper 1 is fixedly installed on the top of the support plate 2, specifically, a through slot is formed on the support plate 2, a guide frame 5 is installed at the through slot, the guide frame 5 can elastically cooperate with the support plate 2, and the bottom end of the hopper 1 is fixedly arranged in the through slot. In actual use, the two tracks 4 are fixed on both sides of the crack on the road surface, then the heated asphalt material is put into the hopper 1 (of course, a heating unit can also be installed on the hopper 1 to assist in heating the asphalt material), and the support plate 2 is driven to move along the length direction of the track 4, so that the asphalt material can be filled along the length direction of the crack, and the asphalt material can flow into the crack, and the reciprocating movement of the support plate 2 on the top of the track 4 can fully fill the crack.

[0033] In order to drive the support plate 2 to slide on the track 4, the scheme is provided with a rotating shaft 7 on the support plate 2, the rotating shaft 7 is provided with a first gear 701 and a second gear 702 on the outer side, the inner side of the track 4 is provided with a first gear rack 402 engaged with the first gear 701 and a second gear rack 403 engaged with the second gear 702 along the length direction, when the rotating shaft 7 rotates, the support plate 2 can be driven to slide on the track 4 through the cooperation of the first gear 701 and the first gear rack 402 or the cooperation of the second gear 702 and the second gear rack 403, specifically, the speed of the support plate 2 driven to move through the cooperation of the second gear 702 and the second gear rack 403 is at least twice the speed of the support plate 2 driven to move through the cooperation of the first gear 701 and the first gear rack 402.

[0034] In the specific scene, since the width or depth of each part of the crack is different, in the process of filling the crack, the shallower or narrower part of the crack will be filled first, in this case, if the support plate 2 still moves at the previous speed, on the one hand, it will affect the efficiency of filling, on the other hand, it will cause waste of asphalt material, in order to solve this problem, the scheme is provided with a sliding rod 12 elastically assembled on the rotating shaft 7, the rotating shaft 7 is provided with a clamping assembly matched with the first gear 701 and the second gear 702, the sliding rod 12 is coaxially provided with a limiting rod 9, the limiting rod 9 is fixedly connected with the rotating shaft 7, and the sliding rod 12 and the limiting rod 9 are matched through a limiting assembly, in the process of reciprocating movement of the sliding rod 12 in the vertical direction, the limiting assembly can drive the sliding rod 12 to rotate intermittently, in this process, the clamping assembly alternately cooperates with the first gear 701 and the second gear 702, so as to change the moving speed of the support plate 2 relative to the track 4, specifically, when the support plate 2 moves to the narrower or shallower part of the crack, the support plate 2 can pass through this area at a faster speed, so as to avoid waste of asphalt material.

[0035] The above-mentioned clamping assembly includes a first clamping block 14 and a second clamping block 11 arranged on the outer side wall of the rotating shaft 7, the first clamping block 14 and the second clamping block 11 are elastically matched with the rotating shaft 7, specifically, the first clamping block 14 is located at the inner side of the first gear 701, and the second clamping block 11 is located at the inner side of the second gear 702, a plurality of notches 10 are formed in the inner wall of the first gear 701 and the second gear 702, specifically, when the first clamping block 14 is popped out and inserted into the notch 10 on the first gear 701, the rotating shaft 7 can drive the first gear 701 to rotate in the process of rotation, at this time, the support plate 2 can slide on the track 4 through the engagement of the first gear 701 and the first gear rack 402, and when the second clamping block 11 cooperates with the second gear 702, the support plate 2 can move on the track 4 at a faster speed through the engagement of the second gear 702 and the second gear rack 403.

[0036] Further, the first clamping block 14 is fixedly embedded with a first magnetic strip 1401 at one end surface close to the slide bar 12, and the second clamping block 11 is fixedly embedded with a second magnetic strip 1101 at one end surface close to the slide bar 12, and the first magnetic strip 1401 and the second magnetic strip 1101 have different magnetic poles at one side close to the slide bar 12;

[0037] Referring to Figure 9 As shown in the drawings, the outer side wall of the slide bar 12 is fixedly embedded with a plurality of groups of first magnetic plates 17 and second magnetic plates 18, the outer side wall of the first magnetic plates 17 and the second magnetic plates 18 has different magnetic poles, and the plurality of groups of first magnetic plates 17 and second magnetic plates 18 are staggered distributed on the outer side wall of the slide bar 12, in addition, the opposite side of the first magnetic plates 17 and the first magnetic strip 1401 has the same magnetic pole, and the opposite side of the second magnetic plates 18 and the first magnetic strip 1401 has different magnetic poles.

[0038] The above-mentioned limiting assembly comprises a limiting block 1202 fixedly matched with the slide bar 12, a cylindrical hole is formed on the top end surface of the slide bar 12, and the limiting block 1202 is fixedly arranged on the inner wall of the cylindrical hole, a plurality of groups of inclined grooves 901 and straight grooves 902 are formed on the outer side wall of the limiting rod 9, the inclined grooves 901 and the straight grooves 902 are communicated, the plurality of groups of inclined grooves 901 and straight grooves 902 are staggered distributed on the outer wall of the slide bar 12, and the plurality of inclined grooves 901 and straight grooves 902 are sequentially connected at the head and tail, specifically, when the limiting block 1202 moves downward along the inclined groove 901, the slide bar 12 can be driven to rotate;

[0039] Referring to Figure 8As shown, the first inclined plate 15 is elastically arranged at the junction of the chute 901 and the top end of the straight groove 902, the first inclined plate 15 is hinged to the limiting rod 9, and the position where the first inclined plate 15 is hinged to the limiting rod 9 is located on the side of the first inclined plate 15 away from the straight groove 902. Through this structure, in the initial state, the first inclined plate 15 can only rotate counterclockwise relative to the limiting rod 9. When the limiting block 1202 moves upward from the straight groove 902 to the first inclined plate 15, it will deflect the first inclined plate 15. After the limiting block 1202 passes the first inclined plate 15, the guiding effect of the first inclined plate 15 can promote the limiting block 1202 to slide along the chute 901. Similarly, the second inclined plate 16 is elastically arranged at the junction of the straight groove 902 and the bottom end of the chute 901, the second inclined plate 16 is hinged to the limiting rod 9, and the position where the second inclined plate 16 is hinged to the limiting rod 9 is located on the side of the second inclined plate 16 away from the chute 901. When the second inclined plate 16 is in the initial state, the second inclined plate 16 rotates clockwise relative to the limiting rod 9. When the limiting block 1202 moves downward along the chute 901 to the second inclined plate 16, it can deflect the second inclined plate 16 clockwise. After the limiting block 1202 passes the second inclined plate 16, the guiding effect of the second inclined plate 16 makes the limiting block 1202 slide along the straight groove 902.

[0040] Referring to Figure 5 As shown, the magnetic block 1201 is fixedly embedded at the bottom end face of the sliding rod 12.

[0041] Referring to Figures 1-2 As shown, a plurality of insertion holes 401 are uniformly arranged on one side of the track 4 opposite to the rotating shaft 7, and the insertion holes 401 are combined with Figure 11 As shown, the crack, wherein, Figure 11The middle ab segment is the segment that is filled first in the crack. At this time, the staff can insert two cylindrical magnets into the insertion hole 401 near the a point and the b point. When the rotating shaft 7 on the support plate 2 gradually moves the a point, because the opposite side of the magnet in the insertion hole 401 and the magnetic block 1201 at the bottom end of the sliding rod 12 have different magnetic poles, at this time, the sliding rod 12 can be driven to move downward by the magnetic attraction of the magnet to the magnetic block 1201 (in actual use, the diameter of the magnet in the insertion hole 401 is greater than the outer diameter of the rotating shaft 7, so that the magnet in the insertion hole 401 does not move out of the insertion hole 401 during cooperation with the magnetic block 1201), so that the limiting block 1202 moves downward along the inclined groove 901. Because the inclined groove 901 is in an inclined state, the extrusion force of the inclined groove 901 on the limiting block 1202 can drive the sliding rod 12 to deflect. When the limiting block 1202 moves downward and passes through the second inclined plate 16, the sliding rod 12 stops rotating. In the initial state, the first magnetic plate 17 on the outer side wall of the sliding rod 12 is in an aligned state with the first clamping block 14 and the second clamping block 11. When the limiting block 1202 slides from the top end of the inclined groove 901 to the bottom end of the inclined groove 901, the sliding rod 12 rotates by a certain angle (here, the angle of rotation of the sliding rod 12 is further described: specifically, when the total number of the first magnetic plate 17 and the second magnetic plate 18 is n, the angle of rotation of the sliding rod 12 driven by the limiting block 1202 each time along the inclined groove 901 is (360 / n)°), so that the second magnetic plate 18 on the outer side wall of the sliding rod 12 moves to a state in which it is collinear with the first clamping block 14 and the second clamping block 11. At this time, the first clamping block 14 can be driven to move toward the sliding rod 12 by the magnetic attraction of the second magnetic plate 18 to the first magnetic strip 1401, and finally disengages from the slot 10 on the first gear 701. At the same time, the second clamping block 11 can be driven to move away from the sliding rod 12 by the repulsive force of the second magnetic plate 18 to the second magnetic strip 1101. When the second clamping block 11 is inserted into the slot 10 on the second gear 702, the rotating shaft 7 can drive the second gear 702 to rotate during rotation, and the cooperation of the second gear 702 and the second rack 403 can significantly improve the moving speed of the support plate 2 on the track 4, so that the support plate 2 can quickly move from the Figure 11When the point a moves to the point b, the slide rod 12 can be reset upward as the rotating shaft 7 gradually leaves the point a, in the process, the limiting block 1202 will slide upward along the straight groove 902, and the cooperation of the straight groove 902 and the limiting block 1202 can keep the stability of the slide rod 12, so that the slide rod 12 rotates synchronously with the rotating shaft 7, and the rotating shaft 7 on the support plate 2 will gradually coincide with the magnet in the jack 401 near the point b after the support plate 2 moves to the point b, according to the above description, the slide rod 12 can drive the slide rod 12 to move downward relative to the limiting rod 9 in the process of moving downward, so that the limiting block 1202 can move downward along the inclined groove 901 again, thereby driving the slide rod 12 to deflect, so that the first magnetic plate 17 on the slide rod 12 is in an aligned state with the first clamping block 14 and the second clamping block 11, at this time, the attraction of the first magnetic plate 17 to the second magnetic strip 1101 can cause the second clamping block 11 to be separated from the second gear 702 at one end, and the repulsion of the first magnetic plate 17 to the first magnetic strip 1401 can drive the first clamping block 14 to move away from the slide rod 12 and eventually cooperate with the first gear 701, so that the rotating shaft 7 drives the support plate 2 to slowly move on the track 4 again through the cooperation of the first gear 701 and the first gear 402, which is beneficial to filling the asphalt material in the crack.

[0042] As described above, when the device is used, the staff only needs to place two magnets in the position of the two ends of the area filled with asphalt in the crack, and the support plate 2 can quickly pass through the area through the cooperation of the second gear 702 and the second gear 403, which can avoid waste of asphalt material on the one hand and improve the efficiency of filling asphalt material on the other hand, and when the support plate 2 moves out of the area, the support plate 2 slowly moves through the cooperation of the first gear 701 and the first gear 402, which is beneficial to filling the asphalt material in other areas of the crack.

[0043] As shown in Figure 1 In order to drive the rotating shaft 7 to rotate, a motor is installed on the support plate 2, the motor is in driving cooperation with the rotating shaft 7 through a transmission unit 3, and the transmission unit 3 can be a chain or a belt structure, in actual use, travel switches can be installed on both sides of the support plate 2, the travel switches are in electrical cooperation with the motor, when the motor moves to the end of the track 4, the travel switches can change the running direction of the motor, of course, it is a mature technical means in the electrical field, and the working principle thereof will not be described here, and in actual operation, the staff can also manually control the running of the motor.

[0044] Referring to Figure 2As shown, the cross section of the track 4 can be "J" type as a whole, the first rack 402 and the second rack 403 are staggered in the vertical plane, a through sliding groove can be formed on the support plate 2, a sliding block 6 is arranged in the sliding groove, the rotating shaft 7 passes through the sliding block 6 and is rotationally connected with the sliding block 6 through a bearing, the cross section of the sliding block 6 can be T-shaped, the sliding block 6 can be fixedly installed on the support plate 2 through bolts, and the structure is beneficial to the adjustment of the position of the rotating shaft 7.

[0045] In combination Figure 2 , Figure 10 As shown, the inner wall of the through groove is provided with a guide groove, and the guide block 501 is fixedly arranged on the guide frame 5 and slidably connected with the guide groove, and the limit spring is fixedly arranged between the guide block 501 and the end face of the guide groove. Through the structure, the elastic connection between the guide frame 5 and the support plate 2 can be realized, so that the guide frame 5 can be moved in close contact with the ground, and the rollers are installed at the positions of the two ends of the bottom of the support plate 2, which is beneficial to assisting the movement of the support plate 2.

[0046] Referring to Figure 5 As shown, the bottom end face of the rotating shaft 7 is provided with a mounting hole, the sliding rod 12 is slidably arranged in the mounting hole, the circumferential wall of the rotating shaft 7 is provided with a through hole communicating with the mounting hole, the first clamping block 14 and the second clamping block 11 are respectively located in the two through holes, and the inner wall of the through hole is provided with a strip-shaped groove. The outer side surface of the first clamping block 14 and the second clamping block 11 is fixedly provided with a protrusion 13, the protrusion 13 on the first clamping block 14 and the second clamping block 11 is respectively slidably arranged in the strip-shaped groove in the inner wall of the two through holes, and the first spring is fixedly arranged between the protrusion 13 and the inner end face of the strip-shaped groove corresponding to the protrusion 13. Through the structure, the elastic connection between the first clamping block 14 and the second clamping block 11 and the rotating shaft 7 can be realized.

[0047] The top end face of the sliding rod 12 is rotationally provided with an annular plate 8. In actual use, the sliding rod 12 and the annular plate 8 can be connected through a tapered roller bearing, and the second spring is fixedly arranged between the annular plate 8 and the top wall of the mounting hole. Through the structure, the sliding rod 12 can be elastically connected with the rotating shaft 7, and the sliding rod 12 can rotate relative to the limiting rod 9.

[0048] Referring to Figure 5 As shown, the inner bottom end of the mounting hole can be provided with a control switch 19 matched with the motor, and the control switch 19 can be connected with the motor through a signal. When the sliding rod 12 moves downward and contacts the control switch 19, the motor can be temporarily stopped, so as to facilitate the first clamping block 14 to be separated from the first gear 701 or the second clamping block 11 to be separated from the second gear 702. Of course, this is a mature technical means in the electrical field, and the specific connection between the control switch 19 and the motor will not be described here.

[0049] Referring toFigure 8 As shown, the first inclined plate 15 is fixed between the side of the straight slot 902 and the slide rod 12, and the second inclined plate 16 is fixed between the side of the inclined slot 901 and the slide rod 12.

Claims

1. An asphalt road pavement repair device, comprising two tracks and a support plate disposed between the two tracks, a hopper fixedly mounted on the top of the support plate, a material guide frame aligned with the hopper mounted on the support plate, and a rotating shaft mounted on the support plate, characterized in that: The outer side of the rotating shaft is sleeved with a first gear and a second gear, and the track is fixedly provided with a first rack meshing with the first gear and a second rack meshing with the second gear; The gear train is fixedly mounted on the cam frame, and the gear train is fixedly mounted on the cam frame, and the gear train is fixedly mounted on the cam frame. The gear train is fixedly mounted on the cam frame, and the gear train is fixedly mounted on the cam frame. The clamping assembly includes a first clamping block and a second clamping block elastically arranged on the outer peripheral wall of the rotating shaft, the first clamping block is located at the inner side of the first gear, and the second clamping block is located at the inner side of the second gear. The inner walls of the first gear and the second gear are both provided with a plurality of notches; The first clamping block is fixedly embedded with a first magnetic strip on an end surface close to the slide rod, and the second clamping block is fixedly embedded with a second magnetic strip on an end surface close to the slide rod, the first magnetic strip and the second magnetic strip have different magnetic poles on the side close to the slide rod, and a first magnetic plate and a second magnetic plate are fixedly embedded on the outer peripheral wall of the slide rod, the number of the first magnetic plate and the second magnetic plate is set to be multiple, the outer side walls of the first magnetic plate and the second magnetic plate have different magnetic poles, the first magnetic plate and the second magnetic plate are staggered, the first magnetic plate and the second magnetic plate are staggered, the side opposite to the first magnetic strip has the same magnetic pole, and the side opposite to the first magnetic strip has a different magnetic pole. The limiting assembly includes a limiting block fixedly matched with the slide rod, and the outer peripheral wall of the limiting rod is provided with a plurality of oblique grooves and a plurality of straight grooves, the oblique grooves are connected end to end with the straight grooves, and the limiting block can slide cyclically along the oblique grooves and the straight grooves; A first inclined plate is elastically provided at the junction of the top end of the inclined groove and the top end of the straight groove, the first inclined plate is hinged to the limit rod, and the position where the first inclined plate and the limit rod are hinged is located on the side of the first inclined plate away from the straight groove, and a second inclined plate is elastically provided at the junction of the bottom end of the straight groove and the bottom end of the inclined groove, the second inclined plate is hinged to the limit rod, and the position where the second inclined plate and the limit rod are hinged is located on the side of the second inclined plate away from the inclined groove.

2. The asphalt road pavement repair device according to claim 1, characterized in that: A plurality of insertion holes are evenly arranged on a side of the track opposite to the rotating shaft.

3. The asphalt road pavement repair device according to claim 1, characterized in that: The bottom end surface of the rotating shaft is provided with a mounting hole, and the sliding rod is slidably arranged in the mounting hole.

4. The asphalt road pavement repair device according to claim 3, characterized in that: An annular plate is rotatably mounted on the top end surface of the slide rod, and a second spring is fixedly arranged between the annular plate and the top wall of the mounting hole.

5. The asphalt road pavement repair device according to claim 1, characterized in that: A through slot is provided on the support plate, and the material guide frame is located at the through slot.

6. A method for repairing an asphalt road pavement using the asphalt road pavement repair device according to any one of claims 1 to 5, characterized in that: The method includes the following steps: laying tracks on both sides of a road crack and installing a support plate between the two tracks; driving the support plate to move slowly on the track by the cooperation of a first gear and a first rack, and guiding the asphalt in the hopper into the road crack by a material guide frame; and driving the support plate to quickly pass through the asphalt-filled area in the crack by the cooperation of a second gear and a second rack.

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