Asphalt pavement maintenance device, maintenance truck and maintenance method

Abstract

The invention discloses an asphalt pavement maintenance device which comprises a supporting frame used for being connected with an external part; the bearing frame is arranged below the supporting frame and connected with the supporting frame through two pairs of hydraulic cylinders, and the pair of hydraulic cylinders are used for jointly controlling the bearing frame to vertically move; the stirring barrel is fixed on the bearing frame; the feeding mechanism is arranged on the bearing frame; one end of the feeding pipe is connected with the stirring barrel, and the other end is connected with the feeding mechanism; the glue filling cone is vertically connected to the bottom of the feeding mechanism, and the bottom of the glue filling cone is used for being inserted into the asphalt pavement crack; the containing cavity is formed in the glue filling cone, and the glue filling hole is formed in the lower end of the glue filling cone and communicates with the containing cavity; and the glue inlet hole is formed in the upper end of the glue filling cone and is communicated with the feeding mechanism. According to the invention, rapid repair and maintenance of asphalt pavement cracks can be realized, the burden of workers is reduced, the construction efficiency is improved, the repair effect can be ensured, and the risk of waste of repair glue can be reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of asphalt pavement maintenance, and in particular relates to an asphalt pavement maintenance device, a maintenance vehicle and a maintenance method. Background Art

[0002] During the use of roads, due to the impact, abrasion and weather changes of moving vehicles, asphalt pavement often has problems such as cracks. In order to ensure the driving safety of vehicles, the cracks in the asphalt pavement need to be repaired and maintained.

[0003] The asphalt pavement repair and maintenance method in the related art usually adopts the method of filling the cracks with repair glue, that is, filling the repair glue into the cracks of the asphalt pavement. However, this pavement maintenance method has the following defects: (1) The repair glue is manually poured into the cracks of the asphalt pavement. The degree of mechanization is relatively low, which increases the burden on the workers and affects the construction efficiency; (2) The repair glue poured into the crack is not vibrated, resulting in the repair glue not being able to fully enter the crack, affecting the repair effect; (3) It is difficult to manually inject the repair glue into the crack accurately, and there is a risk of wasting the repair glue. Summary of the invention

[0004] In order to solve all or part of the above problems, the purpose of the present invention is to provide an asphalt pavement maintenance device, a maintenance vehicle and a maintenance method, which can reduce the burden on staff, improve construction efficiency, achieve vibration stirring of the repair glue, ensure the repair effect, and reduce the risk of repair glue waste.

[0005] In a first aspect, the present invention provides an asphalt pavement maintenance device, comprising: A support frame, used for connecting with external components; A receiving frame is arranged below the supporting frame and connected to the supporting frame through two pairs of hydraulic cylinders, and the pair of hydraulic cylinders are used to jointly control the vertical movement of the receiving frame; A mixing barrel is fixed on the receiving frame; A feeding mechanism is arranged on the receiving frame; A feeding pipe, one end of which is connected to the mixing barrel and the other end of which is connected to the feeding mechanism; A glue pouring cone is vertically connected to the bottom of the feeding mechanism, and the bottom of the glue pouring cone is used to be inserted into the cracks of the asphalt pavement; The accommodating cavity is arranged inside the glue-filling cone. A glue injection hole, which is arranged at the lower end of the glue injection cone and is connected to the accommodating cavity; A glue inlet hole is provided at the upper end of the glue pouring cone and is connected to the feeding mechanism; The feeding mechanism is used to transport the repair glue in the mixing barrel into the accommodating cavity, so that the repair glue can be poured into the cracks of the asphalt pavement through the glue injection holes.

[0006] Optionally, the feeding mechanism comprises: A feeding tank is fixed on the receiving frame; A hydraulic piston is vertically slidably connected in the feeding tank, and the hydraulic piston divides the interior of the feeding tank into a glue liquid chamber and a gas chamber, and the glue liquid chamber is located below the gas chamber; A one-way valve is arranged on the feeding tank and communicated with the glue liquid cavity. One end of the feeding pipe away from the mixing barrel is connected to the one-way valve, and the one-way valve is used to limit the repair glue to enter the glue liquid cavity only through the feeding pipe; An air inlet hole is provided at the top of the feeding tank and communicated with the gas cavity; A support hole is provided at the top of the feeding tank and is communicated with the gas cavity; A hydraulic rod is vertically fixed to the top of the hydraulic piston, the hydraulic rod passes through the support hole and vertically slides with the support hole; A control member, disposed on the feeding tank and used to control the vertical movement of the hydraulic rod; A receiving hole is provided at the bottom of the feeding tank and is communicated with the glue cavity; Among them, the glue pouring cone passes through the receiving hole and is sealed and slidably matched with the receiving hole. The top of the glue pouring cone is connected to the hydraulic piston. The glue inlet hole is always located in the glue liquid cavity. A check valve is respectively arranged in each of the glue inlet holes. The check valve is used to limit the repair glue to only enter the accommodating cavity through the glue liquid cavity.

[0007] Optionally, the control component includes a hydraulic push rod fixed to the feeding tank, and a piston end of the hydraulic push rod is coaxially fixedly connected to the hydraulic rod.

[0008] Optionally, the glue pouring cone is rotatably connected to the hydraulic piston via a bearing, and a tube control is provided on the feeding tank and the glue pouring cone, and the tube control is used to control the glue pouring cone to rotate along its own axis.

[0009] Optionally, the tube control unit includes a support tube vertically fixed to the bottom of the feeding tank, the glue pouring cone passes through the support tube, the side wall of the glue pouring cone is fixedly connected with a control column, the inner wall of the support tube is provided with a spiral control groove, the control column is tightly matched with the control groove, and when the glue pouring cone moves vertically, the glue pouring cone can rotate along its own axis under the action of the control column and the control groove.

[0010] Optionally, a plurality of stirring blocks are fixedly connected to the side wall of the glue filling cone, and the plurality of stirring blocks are arranged equidistantly in the axial direction of the glue filling cone. Each group of stirring blocks is arranged in an inclined shape, and the inclination directions of two adjacent groups of stirring blocks are opposite.

[0011] Optionally, the check valve is threadedly connected to the glue inlet hole, a cleaning hole is provided on the feeding tank, the check valve can be taken out through the cleaning hole, and a sealing plug is threadedly connected to the cleaning hole.

[0012] Optionally, the one-way valve is connected to the feeding tank and the feeding pipe respectively via sealing flanges.

[0013] In a second aspect, the present invention provides an asphalt pavement maintenance vehicle, including a maintenance device, wherein the maintenance vehicle also includes a transport vehicle, and the support frame is fixed to the bottom of the transport vehicle by a plurality of sets of fastening bolts.

[0014] In a third aspect, the present invention provides an asphalt pavement maintenance method using a maintenance vehicle, the maintenance method comprising the following steps: S1, cleaning the debris in the cracks of the asphalt pavement; S2, driving the maintenance vehicle to the crack of the asphalt pavement and aligning the glue cone with the crack of the asphalt pavement; S3, controlling the glue pouring cone to move vertically downward and inserting the glue pouring cone into the crack of the asphalt pavement. At the same time, the repair glue in the mixing barrel is transported to the containing cavity of the glue pouring cone through the feeding mechanism, and then the repair glue is poured into the crack of the asphalt pavement through the glue pouring hole at the bottom of the glue pouring cone; S4, driving the maintenance vehicle along the crack of the asphalt road surface to the next location, and repeating S3; S5, repeat S3 and S4 until all cracks in the asphalt pavement are filled with glue; S6, use a scraper to scrape the repair glue flat to complete the asphalt pavement maintenance.

[0015] It can be seen from the above technical solutions that the asphalt pavement maintenance device, maintenance vehicle and maintenance method provided by the present invention have the following advantages: The maintenance device inserts the glue-filling cone into the cracks of the asphalt pavement to perform glue-filling operations, thereby improving the degree of mechanized operations, reducing the burden on workers, and improving construction efficiency. At the same time, the maintenance device can realize directional glue-filling operations, and the repair glue can be accurately poured into the cracks of the asphalt pavement, reducing the risk of repair glue waste. In addition, during the vertical movement of the glue-filling cone, multiple groups of stirring blocks can automatically vibrate and stir the repair glue to ensure the filling effect of the repair glue, thereby ensuring the road repair effect.

[0016] Other features and advantages of the present invention will be set forth in the description which follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the technical solution of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the technical solution of the present invention and do not constitute a limitation on the technical solution of the present invention.

[0018] Figure 1 This is a schematic diagram of the structure of the asphalt pavement maintenance device in the first embodiment of the present invention; Figure 2 It is a cross-sectional view of the asphalt pavement maintenance device in the first embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of an asphalt pavement maintenance vehicle in Embodiment 2 of the present invention; Figure 4 This is a flow chart of the asphalt pavement method in Example 3 of the present invention.

[0019] Description of reference numerals: 1. Support frame; 2. Undertaking frame; 3. Hydraulic cylinder; 4. Mixing barrel; 5. Feeding mechanism; 51. Feeding tank; 52. Hydraulic piston; 53. Glue liquid chamber; 54. Gas chamber; 55. One-way valve; 56. Air inlet hole; 57. Support hole; 58. Hydraulic rod; 59. Undertaking hole; 60. Check valve; 6. Feeding pipe; 7. Glue pouring cone; 8. Accommodating chamber; 9. Glue pouring hole; 10. Glue inlet hole; 11. Control part; 111. Hydraulic push rod; 12. Pipe control part; 121. Support pipe; 122. Control column; 123. Control tank; 13. Mixing block; 14. Cleaning hole; 15. Sealing plug; 16. Sealing flange; 17. Transport vehicle; 18. Fastening bolts; 100. Maintenance equipment; 200. Maintenance vehicle. DETAILED DESCRIPTION

[0020] To make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other arbitrarily without conflict.

[0021] Embodiment 1 like Figure 1 , Figure 2 The first embodiment of the present invention is shown in the figure, which discloses an asphalt pavement maintenance device, including a support frame 1, and the support frame 1 is used to connect with an external component. A receiving frame 2 is arranged below the support frame 1, and the receiving frame 2 is connected to the support frame 1 through two pairs of hydraulic cylinders 3, and the pair of hydraulic cylinders 3 is used to jointly control the vertical movement of the receiving frame 2.

[0022] like Figure 1 , Figure 2As shown, a mixing barrel 4 and a feeding mechanism 5 are provided on the receiving frame 2, and the mixing barrel 4 and the feeding mechanism 5 are connected by a flexible feeding pipe 6. A glue pouring cone 7 is vertically connected to the bottom of the feeding mechanism 5, and the bottom of the glue pouring cone 7 is used to be inserted into the cracks of the asphalt pavement.

[0023] like Figure 1 , Figure 2 As shown, the inside of the glue injection cone 7 is provided with a containing cavity 8, the lower end of the glue injection cone 7 is provided with a glue injection hole 9, and the upper end is provided with a glue inlet hole 10, the glue injection hole 9 is connected with the containing cavity 8, and the glue inlet hole 10 is connected with the feeding mechanism 5. At the same time, the feeding mechanism 5 is used to transport the repair glue in the mixing barrel 4 to the containing cavity 8, so that the repair glue can be injected into the cracks of the asphalt pavement through the glue injection hole 9, thereby realizing the repair and maintenance of the pavement.

[0024] like Figure 1 , Figure 2 As shown, the feeding mechanism 5 includes a feeding tank 51 fixed on the receiving frame 2, and a hydraulic piston 52 is vertically slidably connected in the feeding tank 51. The hydraulic piston 52 divides the interior of the feeding tank 51 into a glue chamber 53 and a gas chamber 54, and the glue chamber 53 is located below the gas chamber 54. A one-way valve 55 is provided on the feeding tank 51, and the one-way valve 55 is connected to the glue chamber 53. The end of the feeding pipe 6 away from the mixing barrel 4 is connected to the one-way valve 55, and the one-way valve 55 is used to limit the repair glue to enter the glue chamber 53 only through the feeding pipe 6. An air inlet 56 is provided on the top of the feeding tank 51, and the air inlet 56 is connected to the gas chamber 54.

[0025] like Figure 1 , Figure 2 As shown, a support hole 57 is provided on the top of the feeding tank 51, and the support hole 57 is communicated with the gas chamber 54. A hydraulic rod 58 is vertically fixedly connected to the top of the hydraulic piston 52. The hydraulic rod 58 passes through the support hole 57 and vertically slides with the support hole 57. At the same time, a control part 11 for controlling the vertical movement of the hydraulic rod 58 is provided on the feeding tank 51.

[0026] like Figure 1 , Figure 2 As shown, the bottom of the feeding tank 51 is provided with a receiving hole 59, which is connected to the glue liquid chamber 53, and the glue pouring cone 7 passes through the receiving hole 59 and is sealed and slidably matched with the receiving hole 59. The top of the glue pouring cone 7 is connected to the hydraulic piston 52, and the glue inlet hole 10 is always located in the glue liquid chamber 53. At the same time, each glue inlet hole 10 is respectively provided with a check valve 60, and the check valve 60 is used to limit the repair glue to only enter the accommodating chamber 8 through the glue liquid chamber 53.

[0027] When the cracks in the asphalt pavement need to be repaired and maintained, the two pairs of hydraulic cylinders 3 are used to control the vertical movement of the receiving frame 2, and the bottom of the glue injection cone 7 is inserted into the cracks in the asphalt pavement. Subsequently, the hydraulic rod 58 is controlled by the control member 11 to drive the hydraulic piston 52 to move downward. At this time, the repair glue in the glue liquid chamber 53 enters the accommodating chamber 8 through the glue inlet hole 10 under the action of pressure. Subsequently, the repair glue is injected into the cracks in the asphalt pavement through the glue injection hole 9. In this process, under the action of the one-way valve 55, the repair glue in the glue liquid chamber 53 cannot flow back into the feeding pipe 6.

[0028] Next, the hydraulic rod 58 is controlled by the control member 11 to drive the hydraulic piston 52 to move upward. Under the negative pressure of the glue liquid chamber 53, the repair glue in the mixing tank enters the glue liquid chamber 53 through the feeding pipe 6. During this process, under the action of the check valve 60, the repair glue in the crack of the asphalt pavement cannot flow back into the accommodating chamber 8. This process is repeated until the crack position is filled with the repair glue, and then the process can be moved to the next position until the crack of the asphalt pavement is filled with the repair glue.

[0029] like Figure 1 , Figure 2 As shown, the control member 11 includes a hydraulic push rod 111 fixed on the feeding tank 51, and the piston end of the hydraulic push rod 111 is coaxially fixedly connected with the hydraulic rod 58, so that the hydraulic rod 58 can move vertically smoothly. At the same time, the glue pouring cone 7 is rotatably connected with the hydraulic piston 52 through a bearing, and the feeding tank 51 and the glue pouring cone 7 are provided with a pipe control 12, which is used to control the glue pouring cone 7 to rotate along its own axis, so that the repair glue can be poured into the cracks of the asphalt pavement in multiple directions, which can not only improve the glue pouring efficiency, but also ensure the glue pouring effect, thereby improving the pavement repair effect.

[0030] like Figure 1 , Figure 2 As shown, the pipe control unit 12 includes a support tube 121 vertically fixed to the bottom of the feeding tank 51, and the glue filling cone 7 passes through the support tube 121, and the glue filling cone 7 is coaxially arranged with the support tube 121. The side wall of the glue filling cone 7 is fixedly connected with a control column 122, and the inner wall of the support tube 121 is provided with a spiral control groove 123, and the control column 122 and the control groove 123 are closely matched. When the glue filling cone 7 moves vertically, the glue filling cone 7 can automatically rotate along its own axis under the action of the control column 122 and the control groove 123, without adding other driving sources, which can not only realize the linkage and coordination between the various components, but also improve the efficiency of resource utilization.

[0031] like Figure 1 , Figure 2As shown, the side wall of the glue pouring cone 7 is fixedly connected with multiple groups of stirring blocks 13, and the multiple groups of stirring blocks 13 are arranged at equal intervals in the axial direction of the glue pouring cone 7. Each group of stirring blocks 13 is arranged in an inclined shape, and the inclination directions of two adjacent groups of stirring blocks 13 are opposite. At the same time, each group of stirring blocks 13 is provided with multiple stirring blocks, and the multiple stirring blocks 13 are arranged at equal intervals along the circumference of the glue pouring cone 7.

[0032] When the glue pouring cone 7 moves vertically and rotates along its own axis, the multiple groups of stirring blocks 13 can automatically vibrate and stir the repair glue in the cracks of the asphalt pavement to ensure the filling effect of the repair glue, thereby ensuring the pavement repair effect.

[0033] like Figure 1 , Figure 2 As shown, the check valve 60 is threadedly connected to the glue inlet hole 10, that is, the check valve 60 can be disassembled, and the feed tank 51 is provided with a cleaning hole 14, through which the check valve 60 can be taken out, and a sealing plug 15 is threadedly connected to the cleaning hole 14. At the same time, the one-way valve 55 is connected to the feed tank 51 and the feed pipe 6 respectively through the sealing flange 16, so that the one-way valve 55 can be disassembled.

[0034] After the repair and maintenance work is completed, the sealing plug 15 is disassembled, and then the check valve 60 is disassembled, and the check valve 60 is taken out from the cleaning hole 14, and then the check valve 60 can be cleaned. At this time, the external cleaning pipe can also be inserted into the cleaning hole 14 to allow the cleaning liquid to enter the glue cavity 53, and then the cleaning liquid enters the accommodating cavity 8 through the glue inlet hole 10, and then is discharged through the glue injection hole 9, so as to achieve the cleaning of the glue cavity 53 and the glue injection cone 7. At the same time, the one-way valve 55 can also be disassembled and cleaned to reduce the risk of blockage of the one-way valve 55.

[0035] Embodiment 2 like Figure 3 The second embodiment of the present invention is shown in this embodiment, which discloses an asphalt pavement maintenance vehicle, including the maintenance device 100 in the first embodiment. The maintenance vehicle 200 also includes a transport vehicle 17, and the support frame 1 is fixed to the bottom of the transport vehicle 17 by multiple sets of fastening bolts 18, so that the maintenance vehicle 200 can carry the maintenance device 100 for movement.

[0036] Embodiment 3 like Figure 4 The third embodiment of the present invention is shown. This embodiment discloses an asphalt pavement maintenance method. Using the maintenance vehicle 200 in the second embodiment, the maintenance method includes the following steps: S1, cleaning the debris in the cracks of the asphalt pavement; S2, driving the maintenance vehicle 200 to the crack of the asphalt pavement and aligning the glue pouring cone 7 with the crack of the asphalt pavement; S3, the receiving frame 2 is controlled to move vertically downward by two pairs of hydraulic cylinders 3, and the bottom of the glue-filling cone 7 is inserted into the crack of the asphalt pavement. Subsequently, the hydraulic rod 58 is controlled by the hydraulic push rod 111 to drive the hydraulic piston 52 and the glue-filling cone 7 to move vertically, so that the repair glue is poured into the crack of the asphalt pavement. During the vertical movement of the glue-filling cone 7, it can rotate along its own axis, so that the multiple groups of stirring blocks 13 can vibrate and stir the repair glue together to ensure the filling effect of the repair glue; S4, driving the maintenance vehicle 200 along the crack of the asphalt road surface to the next position, and repeating S3; S5, repeat S4 and S4 until all cracks in the asphalt pavement are filled with glue; S6, use a scraper to scrape the repair glue flat to complete the asphalt pavement maintenance.

[0037] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the present invention should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0038] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. An asphalt pavement maintenance device, characterized in that: include: A support frame (1), used for connecting with an external component; A receiving frame (2) is arranged below the supporting frame (1) and is connected to the supporting frame (1) via two pairs of hydraulic cylinders (3), and the pair of hydraulic cylinders (3) are used to jointly control the vertical movement of the receiving frame (2); A mixing barrel (4) is fixed on the receiving frame (2); A feeding mechanism (5) is arranged on the receiving frame (2); A feeding pipe (6), one end of which is connected to the stirring barrel (4) and the other end of which is connected to the feeding mechanism (5); A glue pouring cone (7) is vertically connected to the bottom of the feeding mechanism (5), and the bottom of the glue pouring cone (7) is used to be inserted into the cracks of the asphalt pavement; The accommodating chamber (8) is arranged inside the glue pouring cone (7). A glue injection hole (9), which is arranged at the lower end of the glue injection cone (7) and is connected to the accommodating cavity (8); A glue inlet hole (10) is arranged at the upper end of the glue pouring cone (7) and is connected to the feeding mechanism (5); The feeding mechanism (5) is used to transport the repair glue in the mixing barrel (4) into the accommodating chamber (8), so that the repair glue can be poured into the cracks in the asphalt pavement through the glue pouring holes (9).

2. The maintenance device according to claim 1, characterized in that: The feeding mechanism (5) comprises: A feeding tank (51) is fixed on the receiving frame (2); A hydraulic piston (52) is vertically slidably connected in the feeding tank (51), wherein the hydraulic piston (52) divides the interior of the feeding tank (51) into a glue chamber (53) and a gas chamber (54), and the glue chamber (53) is located below the gas chamber (54); a one-way valve (55) disposed on the feeding tank (51) and connected to the glue liquid chamber (53); an end of the feeding pipe (6) away from the stirring barrel (4) is connected to the one-way valve (55), and the one-way valve (55) is used to restrict the repair glue from entering the glue liquid chamber (53) only through the feeding pipe (6); An air inlet (56) is provided at the top of the feeding tank (51) and is communicated with the gas chamber (54); A support hole (57) is provided at the top of the feeding tank (51) and is communicated with the gas chamber (54); A hydraulic rod (58) is vertically fixed to the top of the hydraulic piston (52), and the hydraulic rod (58) passes through the support hole (57) and vertically slides with the support hole (57); A control member (11) is disposed on the feeding tank (51) and is used to control the vertical movement of the hydraulic rod (58); A receiving hole (59) is provided at the bottom of the feeding tank (51) and is communicated with the glue chamber (53); The glue injection cone (7) passes through the receiving hole (59) and is sealingly and slidably matched with the receiving hole (59). The top of the glue injection cone (7) is connected to the hydraulic piston (52). The glue inlet hole (10) is always located in the glue liquid cavity (53). A check valve (60) is respectively arranged in each of the glue inlet holes (10). The check valve (60) is used to limit the repair glue to only pass through the glue liquid cavity (53) and enter the accommodating cavity (8).

3. The maintenance device according to claim 2, characterized in that: The control component (11) comprises a hydraulic push rod (111) fixed on the feeding tank (51), and a piston end of the hydraulic push rod (111) is coaxially fixedly connected to the hydraulic rod (58).

4. The maintenance device according to claim 2, characterized in that: The glue pouring cone (7) is rotatably connected to the hydraulic piston (52) via a bearing, and a tube control unit (12) is provided on the feeding tank (51) and the glue pouring cone (7), and the tube control unit (12) is used to control the glue pouring cone (7) to rotate along its own axis.

5. The maintenance device according to claim 4, characterized in that: The tube control unit (12) comprises a support tube (121) vertically fixed to the bottom of the feeding tank (51); the glue pouring cone (7) passes through the support tube (121); a control column (122) is fixedly connected to the side wall of the glue pouring cone (7); a spiral control groove (123) is provided on the inner wall of the support tube (121); the control column (122) and the control groove (123) are tightly matched; when the glue pouring cone (7) moves vertically, the glue pouring cone (7) can rotate along its own axis under the action of the control column (122) and the control groove (123).

6. The maintenance device according to claim 4, characterized in that: A plurality of groups of stirring blocks (13) are fixedly connected to the side wall of the glue pouring cone (7), and the plurality of groups of stirring blocks (13) are arranged at equal intervals in the axial direction of the glue pouring cone (7). Each group of stirring blocks (13) is arranged in an inclined shape, and the inclination directions of two adjacent groups of stirring blocks (13) are opposite.

7. The maintenance device according to claim 2, characterized in that: The check valve (60) is threadedly connected to the glue inlet hole (10), and a cleaning hole (14) is provided on the feeding tank (51). The check valve (60) can be taken out through the cleaning hole (14), and a sealing plug (15) is threadedly connected to the cleaning hole (14).

8. The maintenance device according to claim 2, characterized in that: The one-way valve (55) is connected to the feeding tank (51) and the feeding pipe (6) respectively via sealing flanges (16).

9. An asphalt pavement maintenance vehicle, comprising the maintenance device according to any one of claims 1 to 8, characterized in that: The maintenance vehicle also includes a transport vehicle (17), and the support frame (1) is fixed to the bottom of the transport vehicle (17) by means of a plurality of sets of fastening bolts (18).

10. A method for maintaining an asphalt pavement, using the maintenance vehicle according to claim 8, characterized in that: The maintenance method comprises the following steps: S1, cleaning the debris in the cracks of the asphalt pavement; S2, driving the maintenance vehicle to the crack of the asphalt pavement and aligning the glue pouring cone (7) with the crack of the asphalt pavement; S3, controlling the glue pouring cone (7) to move vertically downward, and inserting the glue pouring cone (7) into the crack of the asphalt pavement, at the same time, conveying the repair glue in the mixing barrel (4) to the containing cavity (8) of the glue pouring cone (7) through the feeding mechanism (5), and then pouring the repair glue into the crack of the asphalt pavement through the glue pouring hole (9) at the bottom of the glue pouring cone (7); S4, driving the maintenance vehicle along the crack of the asphalt road surface to the next location, and repeating S3; S5, repeat S3 and S4 until all cracks in the asphalt pavement are filled with glue; S6, use a scraper to scrape the repair glue flat to complete the asphalt pavement maintenance.

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