Pavement repairing device for highway engineering

Abstract

The invention relates to a pavement patching device for highway engineering, which comprises a material storage pipe, the material storage pipe is provided with a material storage space, the material storage pipe is provided with a feeding pipe, the side wall of the material storage pipe is provided with a material injection hole, a partition plate and a hanging plate are fixed in the material storage space, and a passage for materials to pass through is formed between the hanging plate and the inner wall of the material storage pipe; the two ends of the rotating shaft are rotationally connected to the partition plate and the hanging plate correspondingly, and a spiral blade is fixed to the rotating shaft; the driving end of the first driving assembly is in transmission connection with the rotating shaft; the inserting rod coaxially slides and is rotationally connected to the rotating shaft, and the sliding direction of the inserting rod is the same as the opening direction of the material injection hole; and the second driving assembly is installed on the hanging plate, and the driving end of the second driving assembly is in transmission connection with the inserting rod so as to drive the inserting rod to stretch out of the material injection hole or retract into the material storage space. The crack repairing device can be used for inserting a crack repairing material entering a crack, so that the crack repairing effect is improved, and the possibility of cavity formation is reduced.

Description

Technical Field

[0001] This invention relates to the field of road maintenance technology, and more specifically to a road surface repair device for highway engineering. Background Technology

[0002] Over long-term use, highways inevitably develop cracks, potholes, and other defects due to a combination of factors, including vehicle loads and environmental conditions such as temperature changes, precipitation erosion, and material aging. If not repaired promptly, these minor damages will accelerate under the repeated effects of moisture and loads, eventually leading to the overall destruction of the pavement structure, seriously threatening driving safety and significantly shortening the highway's lifespan. Therefore, efficient and reliable daily maintenance and repair are crucial.

[0003] Currently, handheld crack filling equipment is widely used in the industry for repairing road cracks. The basic working principle of this type of equipment is as follows: Specialized repair materials (such as asphalt sealant, polymer-modified asphalt, etc.) that are heated to melt or used at room temperature are loaded into the equipment's storage container. The material is then manually squeezed, pneumatically compressed, or pushed mechanically, causing it to flow from the storage tube through the injection nozzle at the front end. The operator then uses the equipment to fill the cracks with the material. For example, Chinese invention patent CN121519397A discloses a road maintenance pavement repair device, including a storage tube. The front end of the storage tube is detachably and sealed with an injection nozzle, and the rear end is detachably and sealed with a connecting sleeve. A reduction motor is fixedly installed on the outer wall of the connecting sleeve. The output shaft of the reduction motor passes through the storage tube and is fixedly connected to a square rod. A rotating shaft is installed inside the storage tube, and a spiral blade is fixedly installed on the outer circumferential wall of the rotating shaft. The end of the rotating shaft facing the reduction motor is fitted onto the square rod through a square hole.

[0004] However, while existing road repair devices can fill cracks with repair materials in practical engineering applications, they rely entirely on the material's own fluidity for natural penetration and filling during the repair process. This cannot guarantee the filling effect and can easily create voids inside, leaving structural weak points. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a road surface repair device for highway engineering, which can be used to insert the repair material into the crack, improve the crack repair effect, and reduce the possibility of void formation.

[0006] This invention is achieved through the following technical solution: A road surface repair device for highway engineering, comprising: A storage pipe is provided with a storage space. A feed pipe communicating with the storage space is provided on the side wall of the storage pipe. An injection hole communicating with the storage space is opened on the side wall of the storage pipe. A partition and a hanging plate are fixed in the storage space. A passage for material to pass through is formed between the hanging plate and the inner wall of the storage pipe. A rotating shaft, whose two ends are respectively rotatably connected to the partition and the hanging plate, and the rotating shaft is fixed with helical blades; The first drive assembly has its drive end connected to the rotating shaft; The insert rod is coaxially and rotatably connected to the rotating shaft, and the sliding direction of the insert rod is in the same direction as the opening direction of the injection hole; The second drive assembly is mounted on the hanging plate, and its drive end is connected to the insert rod to drive the insert rod to extend out of the injection hole or retract into the storage space.

[0007] Furthermore, the hanging plate has a stepped hole through it, the large-diameter end of which allows the end of the rotating shaft to rotate, and the small-diameter end of which allows the insertion rod to pass through. A limiting strip extending axially is fixed to the wall of the small-diameter end of the stepped hole. The rotating shaft has a insertion hole through it for mounting the insertion rod. A limiting groove is formed on the side wall of the insertion rod, and the limiting strip is adapted to and slidably connected to the limiting groove.

[0008] Furthermore, a positioning block is fixedly connected inside the limiting groove. The positioning block is correspondingly arranged with the limiting strip, and in the retracted state of the insertion rod, the positioning block is located at the other end of the insertion rod relative to the limiting strip.

[0009] Furthermore, the diameter of the injection hole is equal to the diameter of the insert rod.

[0010] Furthermore, the insert rod has an installation groove at its axial end facing the injection hole. A spring is fixed in the installation groove, and an extension plate is slidably connected thereto. One end of the extension plate is fixedly connected to the spring, and the other end slides radially along the insert rod to extend out of the installation groove or retract into the installation groove.

[0011] Furthermore, the inner wall of the storage space connected to the injection hole has a conical surface structure; the side of the extension plate near the groove wall of the mounting groove has an inclined surface.

[0012] Furthermore, the extension plate is detachably connected to a baffle, which abuts against the end side of the insertion rod and seals the opening of the mounting slot.

[0013] Furthermore, the first drive assembly includes a first motor, a first helical gear coaxially fixedly connected to the first motor, and a second helical gear meshing with the first helical gear, wherein the second helical gear is coaxially fixedly connected to the end of the rotating shaft.

[0014] Furthermore, the second drive assembly includes a second motor, a third helical gear coaxially fixedly connected to the second motor, and a fourth helical gear meshing with the third helical gear. The third helical gear is rotatably connected to the hanging plate, and the fourth helical gear is threadedly connected to the rotating shaft.

[0015] Furthermore, a vibration motor is installed inside the end of the insertion rod near the injection hole.

[0016] The beneficial effects of this invention are at least as follows: This road surface repair device for highway engineering uses the rotation of spiral blades to stably push the repair material, and through the axial extension of the insertion rod, it can be directly inserted into the uncured repair material in the crack for active compaction. This changes the traditional filling mode that simply relies on the self-leveling of the material. It can break the air bubbles trapped inside the material and force the material to the sidewalls, bottom and irregular corners of the crack, thereby reducing the formation of structural weak points such as voids and looseness inside the repair body, and effectively improving the density, integrity and durability of the crack repair.

[0017] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0018] Figure 1 This is a first structural diagram of the road surface repair device for highway engineering of the present invention, showing the retracted state of the insertion rod; Figure 2 This is a second structural diagram of the road surface repair device for highway engineering of the present invention, showing the inserted rod in the extended state; Figure 3 For the present invention Figure 2 A magnified view of the local structure; Figure 4 For the present invention Figure 1 A sectional view; Figure 5 For the present invention Figure 4 Enlarged view of section A; Figure 6 For the present invention Figure 4 A magnified view of the local structure; Figure 7For the present invention Figure 6 Enlarged view of section B; Figure 8 For the present invention Figure 2 A sectional view; Figure 9 This is a partial exploded view of the road surface repair device for highway engineering according to the present invention; Figure 10 For the present invention Figure 9 A magnified view of the local structure; Figure 11 For the present invention Figure 10 Enlarged view of the first partial structure; Figure 12 For the present invention Figure 10 The second enlarged view of the local structure.

[0019] In the diagram: 1. Storage pipe; 11. Storage space; 12. Feed pipe; 13. Injection hole; 131. Conical surface structure; 14. Partition plate; 15. Hanging plate; 151. Stepped hole; 152. Limiting strip; 16. Passageway; 17. First handle; 171. First switch; 172. Second switch; 173. Third switch; 18. Second handle; 181. Ring; 182. Screw; 2. Shaft; 21. Insertion rod hole; 3. Spiral blade; 4. First drive assembly; 41. First motor; 42. First helical gear; 43. Second helical gear; 5. Insertion rod; 51. Limiting groove; 52. Positioning block; 53. Mounting groove; 54. Spring; 55. Extension plate; 551. Inclined surface; 552. Baffle; 56. Vibration motor; 6. Second drive assembly; 61. Second motor; 62. Third helical gear; 63. Fourth helical gear. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] In the above description of the present invention, it should be noted that the terms "one side," "the other side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is conventionally placed during use. These terms are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] Furthermore, terms such as "identical" do not imply that components must be absolutely identical; minor differences are permissible. The term "perpendicular" simply means that the positional relationship between components is more perpendicular than "parallel," not that the structure must be perfectly perpendicular; a slight tilt is acceptable.

[0025] Please see Figures 1-12 The present invention provides a technical solution: a road surface repair device for highway engineering, comprising: The storage pipe 1 has a storage space 11. The side wall of the storage pipe 1 is provided with a feed pipe 12 that communicates with the storage space 11. The side wall of the storage pipe 1 has an injection hole 13 that communicates with the storage space 11. A partition 14 and a hanging plate 15 that are close to the injection hole 13 relative to the partition 14 are fixed in the storage space 11. A passageway 16 for material to pass through is formed between the hanging plate 15 and the inner wall of the storage pipe 1. The rotating shaft 2 is rotatably connected to the partition plate 14 and the hanging plate 15 at its two ends, and the rotating shaft 2 is fixed with a spiral blade 3. The first drive assembly 4 has its drive end connected to the rotating shaft 2; Insert rod 5 is coaxially slidably and rotatably connected to rotating shaft 2, and the sliding direction of insert rod 5 is in the same direction as the opening direction of injection hole 13; The second drive assembly 6 is mounted on the hanging plate 15, and its drive end is connected to the insert rod 5 to drive the insert rod 5 to extend out of the injection hole 13 or retract into the storage space 11.

[0026] The operator injects molten repair material into the storage space 11 through the feed pipe 12. The first drive assembly 4 is activated, driving the rotating shaft 2 and its spiral blades 3 to rotate. Under the stable propulsion of the spiral blades 3, the repair material is uniformly and controllably extruded from the injection hole 13 through the passageway 16 and begins to flow into the road surface cracks. This process replaces the unstable discharge that relies on gravity or simple extrusion, ensuring the continuity and controllable flow of the initial filling material.

[0027] After the repair material is initially filled into the crack, the operator controls the second drive assembly 6 to move, driving the insertion rod 5 to slide forward along the axis of the rotating shaft 2, so that the front end of the insertion rod 5 extends out of the injection hole 13 and directly inserts into the repair material that has just been filled into the crack. Subsequently, the second drive assembly 6 can drive the insertion rod 5 to reciprocate and extend, or in conjunction with the first drive assembly 4, the insertion rod 5 can rotate while extending and retracting. The operator can hold the device to change the insertion direction of the insertion rod 5. The insertion rod 5 acts like an "internal vibrator," stirring and tamping inside the material, breaking up the air trapped in the material, and pushing the material towards the crack sidewalls, bottom, and irregular corners, forcing the material to fill these areas where gaps are easily left. This allows the fluid repair material to make more thorough contact and penetration with the old concrete or asphalt interface of the crack, enhancing the adhesion between the new and old materials. At the same time, for wider and deeper cracks, the naturally flowing material may form layers or "bridging" phenomena. The intervention of the insertion rod 5 can destroy this poor structure, ensuring that a dense whole is formed from bottom to top.

[0028] After the current section of the crack is compacted, the second drive assembly 6 drives the insert rod 5 to retract into the storage space 11. The device can move along the crack direction and repeat the "extrusion-tamping" process to repair the next section of the crack. After the insert rod 5 retracts, the spiral blade 3 can continue to extrude a small amount of material to smooth the surface of the fine marks left by the insert rod, making the repair surface smooth.

[0029] The repair material can be modified bitumen sealant.

[0030] By employing the above-described scheme, when repairing a small number of cracks, a storage hopper can be installed on the feed pipe 12, and an appropriate amount of cold patching material can be injected into the hopper. During the rotation of the spiral blade 3, the cold patching material in the storage hopper can be automatically drawn into the storage pipe 1. When repairing large-area cracks, a suction hose can be installed on the feed pipe 12, and the feed end of the suction hose can be inserted into a container containing cold patching material. During the rotation of the spiral blade 3, the cold patching material in the container can be continuously drawn into the storage pipe 1, thereby facilitating continuous crack filling and repair operations without the need for manual addition of cold patching material to the storage pipe 1.

[0031] In one embodiment, a first handle 17 is fixedly connected to the side wall of the storage tube 1 away from the injection hole 13, and a second handle 18 is rotatably connected to the other end near the injection hole 13. The second handle 18 is sleeved on the storage tube 1 via a ring 181 and is tightened against the storage tube 1 by a screw 182 threaded to the ring 181. Therefore, the position of the second handle 18 can be adjusted by rotating the ring 181. In use, the operator can hold the first handle 17 with one hand and the second handle 18 with the other hand to improve the stability of the equipment during operation. The position of the second handle 18 on the storage tube 1 is adjustable, making it more convenient for the user.

[0032] Based on the above embodiment, the partition 14 divides the storage space 11 into a material area and a drying area. The feed pipe 12 connects to the material area, and the hanging plate 15 is installed in the material area. The first drive assembly 4 is installed in the drying area. The material area and the drying area are separated into wet and dry areas, which can protect the first drive assembly 4.

[0033] Please see Figures 6-12 The hanging plate 15 has a stepped hole 151 through it. The large diameter end of the stepped hole 151 is for the end of the rotating shaft 2 to rotate, and the small diameter end is for the insertion rod 5 to pass through. The small diameter end of the stepped hole 151 is fixed with a limiting strip 152 extending along its axial direction. The rotating shaft 2 has an insertion hole 21 through it for installation on the insertion rod 5. The side wall of the insertion rod 5 has a limiting groove 51, and the limiting strip 152 is adapted to and slidably connected to the limiting groove 51.

[0034] When the insert rod 5 extends to perform the tamping operation, the limiting strip 152 fixed to the small diameter end wall of the stepped hole 151 cooperates with the limiting groove 51 on the side wall of the insert rod 5 to restrict the radial degree of freedom of the insert rod 5, forcing it to slide linearly only along the extension direction of the limiting strip 152, that is, in the same direction as the opening of the injection hole 13, so that the tamping action is precise, efficient and can reliably reach the deep part of the crack.

[0035] Furthermore, the stepped hole 151 design integrates the bearing mounting position of the rotating shaft 2 and the guide channel of the insertion rod 5 into a single component, the hanging plate 15. This results in a compact structure, saving valuable installation space within the storage space 11 and improving the alignment accuracy between components. The cooperation between the limiting strip 152 and the limiting groove 51 provides precise guidance and also serves as a circumferential positioning structure for the insertion rod 5, preventing accidental rotation due to vibration or force during operation and ensuring the controllability of the drive connection.

[0036] A positioning block 52 is fixedly connected inside the limiting groove 51. The positioning block 52 is set in correspondence with the limiting strip 152. When the insertion rod 5 is retracted, the positioning block 52 is located at the other end of the insertion rod 5 relative to the limiting strip 152.

[0037] When the insertion rod 5 is extended by the second drive assembly 6 for tamping, the positioning block 52 moves with the insertion rod 5 until it abuts against the end of the limiting strip 152. The limiting strip 152 prevents the insertion rod 5 from sliding forward further, thus effectively preventing the insertion rod 5 from completely dislodging from the insertion rod hole 21 of the rotating shaft 2 due to excessive stroke. This ensures that the connection between the insertion rod 5 and the drive assembly remains safe and reliable during repeated, high-load tamping operations, avoiding equipment jamming, damage, or work interruption caused by component detachment.

[0038] The diameter of the injection hole 13 is equal to the diameter of the insert rod 5.

[0039] First, when the insert rod 5 extends or retracts, the wall of the matching injection hole 13 fits tightly against the rod body, forming effective radial support. This helps maintain the stability of the insert rod end during forceful insertion and prevents breakage. Second, when the insert rod 5 is extended and the storage tube 1 is injecting material normally, a controllable discharge channel is formed between the limiting groove 51 on the side wall of the insert rod 5 and the inner wall of the injection hole 13. Since the diameter of the injection hole 13 is equal to the diameter of the insert rod 5, the cross-sectional area of ​​this discharge channel is relatively fixed and small. According to fluid dynamics principles, under the same pushing pressure of the spiral blade 3, this will produce a "throttling" effect at the discharge port, thereby increasing the injection speed and pressure of the repair material, allowing the material to penetrate deeper into the crack more forcefully and improving the initial filling permeability.

[0040] It should be noted that in existing technologies, the hot-melt asphalt sealant and other materials used to repair road cracks are designed as high-viscosity non-Newtonian fluids with good pumpability. Their rheological properties determine that, under the stable and sufficient mechanical extrusion provided by the helical blades 3, they can smoothly pass through the discharge channel with a controlled cross-sectional area formed between the injection hole 13 and the insert rod 5. The smaller discharge port not only does not hinder the flow, but also builds up higher pressure in the channel due to the "throttling effect," which is precisely what enables "pressurized injection" filling and enhances the material's penetration ability into the cracks.

[0041] Please see Figures 10-11 The insertion rod 5 has an installation groove 53 at its axial end facing the injection hole 13. A spring 54 is fixed in the installation groove 53 and an extension plate 55 is slidably connected thereto. One end of the extension plate 55 is fixedly connected to the spring 54, and the other end slides along the radial direction of the insertion rod 5 to extend out of the installation groove 53 or retract into the installation groove 53.

[0042] When the insert rod 5 extends out of the injection hole 13 and is inserted into the repair material inside the crack for compaction, the irregular space or resistance inside the crack will cause the extension plate 55 to be subjected to lateral compression, thereby overcoming the elastic force of the spring 54 and retracting into the mounting groove 53. When the insert rod 5 moves or vibrates in the material, once the lateral space allows, the spring 54 will automatically eject the extension plate 55, causing it to extend radially. This allows the end of the insert rod 5 to automatically adjust its effective working width according to the internal morphology of the crack during operation: maintaining a streamlined shape in narrow areas to reduce resistance, and expanding in wider areas to increase the agitation area. This can more effectively push and compact the material against the sidewalls of the crack, eliminate lateral voids, and greatly improve the compaction effect and adaptability for cracks of different widths.

[0043] The inner wall of the storage space 11 connected to the injection hole 13 is a conical surface structure 131; the side of the extension plate 55 near the groove wall of the mounting groove 53 is an inclined surface 551.

[0044] First, when the insert rod 5 extends to perform the tamping operation, the extended plate 55 will first contact the conical surface structure 131. The gradually converging conical surface structure 131 will generate a centripetal guiding force on the extended plate 55, smoothly "converging" it and guiding it to a direction coaxial with the axis of the insert rod 5. This ensures that the insert rod 5, together with the extended plate 55 at its end, can smoothly and centrally extend from the injection hole 13 of the storage pipe 1, avoiding the extension plate 55 from getting stuck or colliding with the opening of the injection hole 13.

[0045] Secondly, when the insert rod 5 completes insertion and retracts into the storage space 11, as the extension plate 55 retracts past the opening of the injection hole 13 and the stepped hole 151 on the rear hanging plate 15, its inclined surface 551 will preferentially contact the edges of these openings. Under the continuous action of the axial retraction force, the interaction force generated by the inclined surface 551 and the edge of the opening will form a component force that forces the extension plate 55 to retract into the mounting groove 53, thereby achieving reliable forced retraction and ensuring that the extension plate 55 can be completely retracted into the insert rod 5, smoothly pass through each channel, return to the initial position, and prepare for the next extension operation.

[0046] The extension plate 55 is detachably connected to a baffle 552, which abuts against the end of the insertion rod 5 and seals the opening of the mounting groove 53.

[0047] The baffle 552 blocks the mounting groove 53, effectively preventing most of the repair material from entering the mounting groove 53, thereby protecting the internal spring 54 and improving the long-term reliability of the adaptive telescopic mechanism under harsh working conditions.

[0048] The side opening of the mounting slot 53 facilitates the inspection, replacement, or lubrication of the internal spring 54 and extension plate 55. The baffle 552 is detachably connected to the extension plate 55 via screws, allowing for easy removal of the baffle 552 for maintenance, enabling direct access to the internal mechanism through the side opening. After maintenance, reinstalling the baffle 552 restores the seal.

[0049] Please see Figures 4-5 The first drive assembly 4 includes a first motor 41, a first helical gear 42 coaxially fixedly connected to the first motor 41, and a second helical gear 43 meshing with the first helical gear 42. The second helical gear 43 is coaxially fixedly connected to the end of the rotating shaft 2.

[0050] The first motor 41 serves as a power source, with its output shaft fixed coaxially with the first helical gear 42. It transmits power to the second helical gear 43 that meshes with it, thereby driving the rotating shaft 2 to rotate and realizing the rotation of the spiral blade 3.

[0051] Based on the above embodiments, a first switch 171 is provided on the first handle 17. The first switch 171 is connected to the first motor 41 so as to control the first motor 41 to start or stop.

[0052] Please see Figures 6-7 The second drive assembly 6 includes a second motor 61, a third helical gear 62 coaxially fixedly connected to the second motor 61, and a fourth helical gear 63 meshing with the third helical gear 62. The third helical gear 62 is rotatably connected to the hanging plate 15, and the fourth helical gear 63 is threadedly connected to the rotating shaft 2.

[0053] The second motor 61 drives the fourth helical gear 63 to rotate through the meshing of the third helical gear 62 and the fourth helical gear 63. When the fourth helical gear 63 is driven to rotate, the shaft 2 itself is restricted from axial movement by the partition plate 14 and the hanging plate 15, and the insertion rod 5 is restricted from circumferential rotation by the cooperation of the limiting strip 152 and the limiting groove 51. Therefore, according to the motion principle of the threaded pair, the rotating fourth helical gear 63 will drive the shaft 2 that is threadedly engaged with it to produce a precise linear axial displacement, thereby causing the insertion rod 5, which is coaxially slidably connected to the shaft 2, to extend or retract.

[0054] Based on the above embodiment, a second switch 172 is provided on the first handle 17. The second switch 172 is connected to the second motor 61 so as to control the second motor 61 to start or stop.

[0055] Please see Figures 6-7 A vibration motor 56 is installed inside the end of the insertion rod 5 near the injection hole 13.

[0056] When the insert 5 extends and is inserted into the repair material within the crack, the vibration motor 56 is activated to drive the end of the insert 5 to generate high-frequency micro-amplitude vibration. This vibration is directly transmitted to the surrounding repair material, which can more effectively break up the air trapped inside the material, eliminate air bubbles, and significantly reduce the apparent viscosity of the material. This makes the material's fluidity instantly enhanced under the vibration liquefaction effect, thus allowing it to fill every tiny gap and irregular interface of the crack more smoothly.

[0057] Based on the above embodiment, a third switch 173 is provided on the first handle 17. The third switch 173 is connected to the vibration motor 56 so as to control the vibration motor 56 to start or stop. The third switch 173 can be connected to the vibration motor 56 by a cable or controlled by an electrical signal. The specific connection method is a conventional method in the art and will not be described in detail again.

[0058] Among them, the vibration motor 56 can be a micro motor.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A road surface repair device for highway engineering, characterized in that, include: A storage pipe (1) is provided with a storage space (11). A feed pipe (12) communicating with the storage space (11) is provided on the side wall of the storage pipe (1). An injection hole (13) communicating with the storage space (11) is opened on the side wall of the storage pipe (1). A partition (14) and a hanging plate (15) are fixed in the storage space (11) and are close to the injection hole (13) relative to the partition (14). A passage (16) for material to pass through is formed between the hanging plate (15) and the inner wall of the storage pipe (1). A rotating shaft (2) is rotatably connected at both ends to the partition plate (14) and the hanging plate (15), and a spiral blade (3) is fixed on the rotating shaft (2). The first drive assembly (4) is driven by the shaft (2). Insert rod (5), which is coaxially slidably and rotatably connected to the rotating shaft (2), and the sliding direction of the insert rod (5) is in the same direction as the opening direction of the injection hole (13); The second drive assembly (6) is mounted on the hanging plate (15) and its drive end is connected to the insert rod (5) to drive the insert rod (5) to extend out of the injection hole (13) or retract into the storage space (11).

2. The road surface repair device for highway engineering according to claim 1, characterized in that: The hanging plate (15) has a stepped hole (151) through it. The large diameter end of the stepped hole (151) is for the end of the rotating shaft (2) to rotate, and the small diameter end is for the insertion rod (5) to pass through. The small diameter end of the stepped hole (151) is fixed with a limiting strip (152) extending along its axial direction. The rotating shaft (2) has a insertion hole (21) through it for installation on the insertion rod (5). The side wall of the insertion rod (5) has a limiting groove (51), and the limiting strip (152) is adapted to and slidably connected to the limiting groove (51).

3. The road surface repair device for highway engineering according to claim 2, characterized in that: A positioning block (52) is fixedly connected inside the limiting groove (51). The positioning block (52) is correspondingly set with the limiting strip (152). In the retracted state of the insertion rod (5), the positioning block (52) is located at the other end of the insertion rod (5) relative to the limiting strip (152).

4. The road surface repair device for highway engineering according to claim 2, characterized in that: The diameter of the injection hole (13) is equal to the diameter of the insert (5).

5. The road surface repair device for highway engineering according to claim 1, characterized in that: The insertion rod (5) has an installation groove (53) at its axial end facing the injection hole (13). A spring (54) is fixed in the installation groove (53) and an extension plate (55) is slidably connected thereto. One end of the extension plate (55) is fixedly connected to the spring (54), and the other end slides along the radial direction of the insertion rod (5) to extend out of the installation groove (53) or retract into the installation groove (53).

6. The road surface repair device for highway engineering according to claim 5, characterized in that: The inner wall of the storage space (11) connected to the injection hole (13) is a conical structure (131); the side of the extension plate (55) near the groove wall of the mounting groove (53) is an inclined surface (551).

7. The road surface repair device for highway engineering according to claim 5, characterized in that: The extension plate (55) is detachably connected to a baffle (552), which abuts against the end of the insertion rod (5) and seals the opening of the mounting groove (53).

8. The road surface repair device for highway engineering according to any one of claims 1-7, characterized in that: The first drive assembly (4) includes a first motor (41), a first helical gear (42) coaxially fixedly connected to the first motor (41), and a second helical gear (43) meshing with the first helical gear (42). The second helical gear (43) is coaxially fixedly connected to the end of the rotating shaft (2).

9. The road surface repair device for highway engineering according to any one of claims 1-7, characterized in that: The second drive assembly (6) includes a second motor (61), a third helical gear (62) coaxially fixedly connected to the second motor (61), and a fourth helical gear (63) meshing with the third helical gear (62). The third helical gear (62) is rotatably connected to the hanging plate (15), and the fourth helical gear (63) is threadedly connected to the rotating shaft (2).

10. The road surface repair device for highway engineering according to any one of claims 1-7, characterized in that: A vibration motor (56) is installed inside the end of the insert (5) near the injection hole (13).

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