A highway pavement crack asphalt repairing device

Abstract

The utility model relates to a kind of road surface crack repair technical field, specifically related to a kind of highway road surface crack asphalt repair device. Including multiple positioning parts, positioning part can be stably installed in the slot in the upper end of road surface, vertical screw rod is detachably fixedly connected on the upper end of positioning part, screw rod penetrates the hole on pressing plate, the upper end of the road surface on the both sides of slot is contacted with the lower end of pressing plate, pressing plate is fixed in arc plate, first aperture corresponding with screw rod is set up on arc plate, nut is threadedly connected on the screw rod above pressing plate, extrusion nozzle is installed on flat plate, second aperture corresponding with extrusion nozzle is set up on arc plate. The positioning part of the utility model is composed of two inserting rods and flat plate, inserting rod is inserted into the inclined hole on the both sides of road surface slot, and is limited by flat plate, forming mechanical locking structure. This design makes inserting rod and flat plate play the role similar to anchor rod, prevent sealant displacement or fall off in crack, to improve the overall stability and durability after repair.

Description

Technical Field

[0001] This utility model relates to the field of road surface crack repair technology, specifically to an asphalt repair device for highway road surface cracks. Background Technology

[0002] During use, asphalt pavements on highways will develop cracks due to various factors such as localized settlement, freezing damage, and overloading. If these cracks are not treated promptly, water will seep through them, causing significant damage to the road base and structure. Therefore, timely repair of cracks in asphalt pavements is necessary. Cracks in highway asphalt pavements are an unavoidable problem and a regular task in maintenance work.

[0003] Currently, the repair methods for asphalt pavement cracks on highways are mainly limited to joint injection, i.e., hot injection. Hot injection refers to cutting a U-shaped joint along the crack, pouring hot asphalt, sealing the crack, and preventing moisture from entering the pavement structure through the crack. According to the existing asphalt pavement crack repair scheme design, there are four types: (1) Standard groove non-sealing type, i.e., the groove is 20-50mm deep and 20mm wide, and the sealant is filled to the same level as the groove without adding a sealing layer; (2) Standard groove sealing type, i.e., the groove is 20-50mm deep and 20mm wide, and after the sealant is filled to the top of the crack, a sealing layer of 2-3mm thick and 80-100mm wide is added to the pavement; (3) Shallow groove sealing type, the groove is 5mm deep and 40mm wide, and the crack is filled and then a sealing layer is added; (4) Simple grooveless sealing type, which is suitable for cracks with a width of less than 3mm, i.e., no groove is cut and only a 12.7mm wide sealant is applied to the crack. When using standard groove sealing for crack repair, during the process of injecting sealant after grooving, it is generally necessary to fill the sealant along the extension direction of the groove, and the sealant is prone to uneven filling during the filling process. Utility Model Content

[0004] The main purpose of this invention is to provide a device for repairing asphalt cracks in highway pavement that facilitates the extrusion of sealant.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0006] A road surface crack asphalt repair device includes multiple positioning components. The positioning components can be stably installed in a groove at the upper end of the road surface. The groove is connected to the crack and is a V-shaped groove. A vertical screw is detachably fixed to the upper end of the positioning component. The screw passes through a hole in the pressure plate. The lower end of the pressure plate contacts the upper end of the road surface on both sides of the groove. The pressure plate is fixed in an arc-shaped plate. A first opening corresponding to the screw is opened on the arc-shaped plate. A nut is threaded onto the screw above the pressure plate. An injection nozzle is installed on the plate and is connected to the groove. A second opening corresponding to the injection nozzle is opened on the arc-shaped plate.

[0007] Specifically, the left and right ends of the arc-shaped plate are flush with the lower end of the pressure plate, and the left and right ends of the arc-shaped plate are in contact with the upper end of the road surface.

[0008] Specifically, the upper end of the pressure plate is fixedly connected to the inner edge of the arc-shaped plate through multiple support plates.

[0009] Specifically, the positioning component includes two insert rods with their lower ends far apart from each other. Each insert rod has a flat groove at its upper end. The left and right sides of the plate are respectively inserted into the flat grooves of the two insert rods. The plate contacts the groove wall. Multiple inclined holes are opened on the two inclined groove walls on the left and right sides of the groove. The inclined holes on the left and right sides correspond one-to-one. The two insert rods of the positioning component are respectively inserted into the two corresponding inclined holes.

[0010] Specifically, the lower end of the inclined hole is inclined in a direction away from the crack.

[0011] Specifically, the lower outer side of the screw has a lower thread, and the upper outer side of the screw has an upper thread. The upper thread and the lower thread have opposite helical directions. The plate has a threaded hole, and the lower part of the screw is threaded into the threaded hole of the plate. The nut is connected to the upper thread of the screw.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. The positioning component consists of two insert rods and a plate. The insert rods are inserted into the inclined holes on both sides of the road surface groove and are limited by the plate to form a mechanical locking structure. This design allows the insert rods and plate to act like anchor bolts, preventing the sealant from shifting or falling off in the cracks, thereby improving the overall stability and durability after repair.

[0014] 2. The curved plate covers the repair area, with its left and right ends in contact with the road surface, forming a protective barrier. During the injection and curing of the sealant, the curved plate can block the running over by passing vehicles and external impacts, preventing the sealant from being damaged and ensuring reliable repair quality.

[0015] 3. The device adopts a detachable design, such as the threaded connection between the screw and the plate, and the fixing of the nut and the pressure plate, which facilitates quick installation and disassembly. The operation steps are standardized, reducing construction complexity, improving repair efficiency, and reducing labor costs.

[0016] 4. The pressure plate seals the upper port of the groove, and the sealant is injected through the second opening using the injection nozzle. This allows the sealant to fill every corner of the crack and V-shaped groove evenly, reducing gaps and leakage risks, and enhancing the sealing and repair integrity of the crack. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the device after installation.

[0018] Figure 2 This is a top view of the device after installation.

[0019] Figure 3 for Figure 2 Sectional view along line AA.

[0020] Figure 4 for Figure 2 Sectional view along the BB direction.

[0021] Figure 5 This is a schematic diagram of the insertion rod.

[0022] The components in the attached diagram are named as follows: 1. Crack, 2. Pressure plate, 3. Arc plate, 4. First opening, 5. Second opening, 6. Injection nozzle, 7. Screw, 8. Nut, 9. Insert rod, 10. Flat plate, 11. Flat groove, 12. Groove, 13. Support plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Reference Figures 1-5 As shown, a highway pavement crack asphalt repair device includes multiple positioning components. Each positioning component is stably installed within a groove 12 at the upper end of the pavement. The groove 12 communicates with the crack 1 and is a V-shaped groove. A vertical screw 7 is detachably and fixedly connected to the upper end of each positioning component. The screw 7 passes through a hole in a pressure plate 2. The lower end of the pressure plate 2 contacts the upper ends of the pavement on both sides of the groove 12. The pressure plate 2 is fixed within an arc-shaped plate 3. The upper end of the pressure plate 2 is fixedly connected to the inner edge of the arc-shaped plate 3 via multiple support plates 13. The left and right ends of the arc-shaped plate 3 are flush with the lower ends of the pressure plate 2 and contact the upper ends of the pavement. A first opening 4 corresponding to the screw 7 is provided on the arc-shaped plate 3. A nut 8 is threaded onto the screw 7 above the pressure plate 2. An injection nozzle 6 is installed on a flat plate 10, communicating with the groove 12. A second opening 5 corresponding to the injection nozzle 6 is provided on the arc-shaped plate 3.

[0025] The positioning component includes two insert rods 9, with their lower ends spaced apart. Each insert rod 9 has a flat groove 11 at its upper end. A flat plate 10 is inserted into the flat grooves 11 on both sides of the two insert rods 9, with the plate 10 contacting the groove walls. Multiple inclined holes are formed on the two inclined groove walls on both sides of the slot 12, with the lower ends of the inclined holes inclined away from the side away from the crack 1. The inclined holes on the left and right sides correspond one-to-one, and the two insert rods 9 of the positioning component are inserted into the corresponding two inclined holes.

[0026] The lower outer side of the screw 7 is provided with a lower thread, and the upper outer side of the screw 7 is provided with an upper thread. The upper thread and the lower thread have opposite helical directions. The plate 10 is provided with a threaded hole. The lower part of the screw 7 is threadedly connected to the threaded hole of the plate 10. The nut 8 is connected to the upper thread of the screw 7.

[0027] When it is necessary to repair crack 1 in the road surface, a V-shaped groove 12 is made at the upper end of the road surface at crack 1. Then, multiple inclined holes are made on the inclined groove walls on both sides of the groove 12, so that the inclined holes on the left and right sides correspond one-to-one. The two insertion rods 9 of the positioning member are respectively inserted into the two corresponding inclined holes, and the plate 10 is inserted into the flat groove 11 of the insertion rod 9. At this time, the plate 10 limits the two insertion rods 9, and the two insertion rods 9 cannot be withdrawn from the inclined holes on both sides.

[0028] The lower part of the screw 7 is threaded to the threaded hole on the plate 10. The pressure plate 2 and the arc plate 3 are placed on the upper end of the road surface and the screw 7 passes through the hole on the pressure plate 2. The nut 8 is threaded to the upper part of the screw 7 through the first opening 4 and the nut 8 presses the pressure plate 2. At this time, the pressure plate 2 and the arc plate 3 are positioned on the road surface and the pressure plate 2 seals the upper port of the slot 12.

[0029] The sealant is injected into the groove 12 and crack 1 through the second opening 5 using the injection nozzle 6, and the sealant can fill the crack 1 and groove 12. At this time, the arc plate 3 can prevent passing vehicles from running over the sealant.

[0030] After the sealant has hardened, remove nut 8 and disassemble pressure plate 2 and arc plate 3. Then rotate screw 7 to separate screw 7 from plate 10.

[0031] The insert rod 9 in the plate 10 and the slot 12 can act as an anchor rod, which can improve the stability of the sealant in the crack 1 and the slot 12.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for repairing asphalt cracks in highway pavement, characterized in that, It includes multiple positioning components, which can be stably installed in the groove (12) at the upper end of the road surface. The groove (12) is connected to the crack (1). The upper end of the positioning component is detachably fixedly connected to a vertical screw (7). The screw (7) passes through the hole on the pressure plate (2). The lower end of the pressure plate (2) contacts the upper end of the road surface on both sides of the groove (12). The pressure plate (2) is fixed in the arc plate (3). The arc plate (3) has a first opening (4) corresponding to the screw (7). The screw (7) above the pressure plate (2) is threaded with a nut (8). The plate (10) is equipped with an injection nozzle (6). The injection nozzle (6) is connected to the groove (12). The arc plate (3) has a second opening (5) corresponding to the injection nozzle (6).

2. The asphalt repair device for road surface cracks according to claim 1, characterized in that, The upper end of the pressure plate (2) is fixedly connected to the inner edge of the arc plate (3) through multiple support plates (13).

3. The asphalt repair device for road surface cracks according to claim 1, characterized in that, The left and right ends of the arc plate (3) are flush with the lower end of the pressure plate (2), and the left and right ends of the arc plate (3) are in contact with the upper end of the road surface.

4. The asphalt repair device for road surface cracks according to claim 1, characterized in that, The slot (12) is a V-shaped slot.

5. The asphalt repair device for road surface cracks according to claim 4, characterized in that, The positioning component includes two insert rods (9), with their lower ends far apart from each other. Each insert rod (9) has a flat groove (11) at its upper end. The left and right sides of the plate (10) are respectively inserted into the flat grooves (11) of the two insert rods (9). The plate (10) contacts the groove wall of the flat groove (11). Multiple inclined holes are opened on the two inclined groove walls on the left and right sides of the groove (12). The inclined holes on the left and right sides correspond one to one. The two insert rods (9) of the positioning component are respectively inserted into the corresponding two inclined holes.

6. The asphalt repair device for road surface cracks according to claim 5, characterized in that, The lower end of the inclined hole is inclined in a direction away from the crack (1).

7. The asphalt repair device for road surface cracks according to claim 1, characterized in that, The screw (7) has a lower thread on the outer side of its lower part and an upper thread on the outer side of its upper part. The upper thread and the lower thread have opposite helical directions. A threaded hole is provided on the plate (10). The lower part of the screw (7) is threaded into the threaded hole of the plate (10). The nut (8) is connected to the upper thread of the screw (7).

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