A cold patching and repairing coring detection device for asphalt pavement
The integrated cold patch repair core sampling and testing device enables non-destructive core sampling and efficient backfilling of asphalt pavement, solving the problems of frequent equipment relocation and poor backfilling quality in traditional repair processes, and improving repair efficiency and quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CCCC FIRST HIGHWAY XIAMEN ENGINEERING CO LTD
- Filing Date
- 2026-06-09
- Publication Date
- 2026-07-14
AI Technical Summary
Traditional asphalt pavement inspection and repair processes require frequent relocation of various equipment, resulting in high labor intensity. Furthermore, the quality of pothole backfilling is difficult to guarantee, cold patch material is prone to overflow, and insufficient compaction can easily lead to secondary damage.
An integrated cold patch repair coring and testing device was designed, comprising a positioning base, a support column, a transverse guide main beam, a translation drive mechanism, a lifting drive module, and a feeding module, to achieve non-destructive coring and wall-guided backfilling. It employs multi-state reusable actuators and a high-frequency vibrator for cutting and compaction.
It achieves non-destructive core sampling, precise cutting, and efficient backfilling, ensuring clear repair boundaries and high compaction, reducing the labor intensity of construction workers, and improving repair efficiency and quality.
Smart Images
Figure CN122385242A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the technical field of highway maintenance and engineering quality testing equipment, specifically a core sampling and testing device for cold patch repair of asphalt pavement. Background Technology
[0002] With the continuous improvement and development of my country's highway transportation network, the workload of asphalt pavement maintenance and repair is increasing day by day. In the routine process of asphalt pavement quality inspection and pothole repair, it is often necessary to go through three independent stages: First, a core sample is obtained by destructively drilling the pavement with a core drill; second, the core sample is sent to the laboratory for mechanical property testing such as compressive strength and density; finally, additional filling equipment and compaction machinery need to be deployed to the site to backfill and compact the potholes left after core sampling with cold patch material.
[0003] This traditional work method has many significant drawbacks: First, construction workers need to frequently move between sites carrying a variety of heavy equipment such as core drills and compactors, which not only increases the labor intensity but also seriously reduces the overall efficiency of road maintenance. Secondly, the quality of backfilling potholes is difficult to guarantee. When filling potholes using traditional manual labor or small compaction equipment, the lack of lateral rigid wall restraint makes it easy for cold-filled material to overflow into the surrounding loose gaps, resulting in blurred edges and insufficient compaction of the repaired potholes, which can easily lead to secondary damage.
[0004] Therefore, there is an urgent need for a new type of automated equipment that can break through the functional limitations of single components and highly integrate non-destructive coring and wall-guided backfilling. Summary of the Invention
[0005] This invention provides a core sampling and testing device for cold patch repair of asphalt pavement, which solves the problems mentioned in the background art.
[0006] To achieve the above objectives, the present invention provides the following technical solution: A core sampling and testing device for cold patch repair of asphalt pavement includes two sets of positioning bases and support columns fixed on the positioning bases to provide a stable overall support structure. A transverse guide rail main beam is installed across the top of the two sets of support columns to support the upper moving mechanism. The device also includes: A translation drive mechanism is mounted on the transverse guide rail main beam to achieve precise horizontal positioning of the core working components; The lifting drive module is slidably mounted on the translation drive mechanism. The lifting drive module includes a main mounting plate, a power control box set on the top of the main mounting plate, and a main lifting rod and an auxiliary lifting rod controlled by the power control box, providing independent vertical lifting power for the main and auxiliary working mechanisms. A multi-state multiplexing execution component is connected below the lifting drive module. The multi-state multiplexing execution component includes an outer multiplexing cutting sleeve that is driven to rise and fall by the main lifting rod, and a compaction block that is driven by the auxiliary lifting rod and slides coaxially within the outer multiplexing cutting sleeve, thereby realizing the multiplexing of the functions of cutting the wall and compaction detection. The feeding module is used for automated conveying of repair materials. The feeding module includes a cold repair material storage hopper. An outer feeding pipe is connected between the outer reusable cutting sleeve and the cold repair material storage hopper. A telescopic feed pipe is provided between the cold repair material storage hopper and the outer feeding pipe to accommodate the lifting and lowering movements of the actuator.
[0007] Preferably, the translation drive mechanism includes a translation guide rail, a translation slider, and a suspension mounting block; a horizontally arranged horizontal displacement groove is provided in the main beam of the transverse guide rail, and the translation slider is slidably disposed in the horizontal displacement groove to provide translation guidance; the back of the main mounting plate is fixedly connected to the translation slider through the suspension mounting block.
[0008] Preferably, the translation drive mechanism further includes a transverse drive motor and a translation lead screw; the transverse drive motor is fixed to the end of the transverse guide rail main beam, the output shaft of the transverse drive motor is coaxially and fixedly connected to the translation lead screw, the translation lead screw passes through the translation slider and is threadedly connected to it, and high-precision displacement is achieved through lead screw transmission.
[0009] Preferably, the lifting drive module further includes a Z-axis lifting guide assembly, an upper connecting bracket, and a lower connecting bracket; the Z-axis lifting guide assembly is fixed to the front side of the main mounting plate, the upper connecting bracket is fixedly disposed at the bottom of the front side of the main mounting plate, the lower connecting bracket is located directly below the upper connecting bracket, the telescopic part of the main lifting rod passes through the upper connecting bracket and is fixedly connected to the top of the auxiliary lifting rod, the auxiliary lifting rod is vertically installed on the lower connecting bracket, and its output end extends vertically downward and is fixedly connected to the compaction block.
[0010] Preferably, the lifting drive module further includes a linear guide sleeve and a guide column; the bottom of the power control box is fixedly provided with a linear guide sleeve, and a guide column is fixedly provided on the lower connecting bracket. The guide column passes through the upper connecting bracket and extends to the linear guide sleeve, effectively preventing swaying during the lifting process.
[0011] Preferably, a guide sleeve is coaxially fixed to the top center of the outer reusable cutting sleeve, and an external gear ring is fixedly sleeved on the outside of the guide sleeve; a rotary drive motor is fixedly installed on the top surface of the lower connecting bracket, and a drive gear is coaxially fixedly connected to the output shaft of the rotary drive motor. The drive gear meshes with the external gear ring to transmit rotary cutting torque.
[0012] Preferably, the bottom edge of the outer reusable cutting sleeve is provided with a ring of cutting teeth; the bottom of the compaction block is a flat force-bearing surface, and a high-frequency vibrator is embedded inside the compaction block to acquire force data and provide high-frequency compaction vibration.
[0013] Preferably, the feeding module further includes a feeding motor fixedly installed at the end of the feeding outer tube. The output shaft of the feeding motor extends into the feeding outer tube and is coaxially and fixedly connected to the feeding auger to realize the quantitative screw conveying of cold replenishment material.
[0014] Preferably, the feeding module further includes a support plate fixedly disposed between two sets of positioning bases. The support plate is fixedly provided with an mounting frame for installing the cold replenishment material storage hopper. The bottom end of the mounting frame is fixedly provided with an upper mounting seat. The bottom end of the upper mounting seat is fixedly connected to a following cylinder. The telescopic end of the following cylinder is fixedly connected to a lower mounting seat. The lower mounting seat is located between the feeding outer pipe and the feeding motor, thereby providing dynamic support compensation during the lifting process.
[0015] Preferably, the two sets of positioning bases are arranged in parallel to each other, and each positioning base is equipped with universal casters and leveling anchor feet at both ends of its bottom, which facilitates on-site movement and rigid anchoring of the equipment.
[0016] The present invention has the following advantages: This invention breaks away from the single function by setting an outer reusable cutting sleeve, which can be directly used as an anti-overflow wall protector after cutting; in conjunction with the high-frequency vibrator in the compaction block, it can perform in-situ strong compaction of the cold-filled material without dead angles, resulting in clear repair boundaries and extremely high compaction.
[0017] This invention employs a structure with dual guide columns and main and auxiliary lifting rods to ensure absolute verticality and stability during heavy-duty cutting and pressing. The innovative design of the following cylinder and telescopic feed pipe enables the screw feeding system to perfectly adapt to the complex lifting and lowering movements of the sleeve, ensuring that materials can be accurately and smoothly automatically poured at any stroke height. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural diagram of the front part of a core sampling and testing device for cold patch repair of asphalt pavement according to the present invention. Figure 2 This is a three-dimensional structural diagram of the rear part of the core sampling and testing device for cold patch repair of asphalt pavement according to the present invention. Figure 3 This is a partial three-dimensional structural diagram of the transverse guide rail main beam and translation drive mechanism in this invention; Figure 4 This is a three-dimensional structural diagram of the front lifting drive module in a cold patch repair core sampling and testing device for asphalt pavement according to the present invention. Figure 5This is a three-dimensional structural diagram of the rear lifting drive module in a core sampling and testing device for cold patch repair of asphalt pavement according to the present invention. Figure 6 This is a partial cross-sectional perspective view of the polymorphic multiplexing execution component and the feeding module in this invention.
[0019] In the diagram: 1. Positioning base; 2. Support column; 3. Transverse guide rail main beam; 4. Universal caster wheel; 5. Leveling anchor foot; 6. Z-axis lifting guide assembly; 7. Multi-state multiplexing execution assembly; 8. Cold replenishment material storage hopper; 9. Support plate; 10. Transverse drive motor; 11. Horizontal displacement groove; 12. Translation guide rail; 13. Translation slider; 14. Main mounting plate; 15. Main lifting rod; 16. Power control box; 17. Upper connecting bracket; 18. Linear guide sleeve; 9. Guide column; 20. Lower connecting bracket; 21. Secondary lifting rod; 22. Outer reusable cutting sleeve; 23. Guide sleeve; 24. Cutting gear ring; 25. External gear ring; 26. Rotary drive motor; 27. Drive gear; 28. Feeding outer tube; 29. Upper mounting base; 30. Lower mounting base; 31. Follower cylinder; 32. Feeding motor; 33. Telescopic feed pipe; 34. Suspension matching slide; 35. Compactor block; 36. High-frequency vibrator; 37. Feeding auger. Detailed Implementation
[0020] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.
[0021] It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and 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.
[0022] Please see Figure 1-6 A core sampling and testing device for cold patch repair of asphalt pavement includes two sets of positioning bases 1 and support columns 2 fixed on the positioning bases 1. A transverse guide beam 3 is installed across the top of the two sets of support columns 2. The two sets of positioning bases 1 are arranged parallel to each other. Universal casters 4 and leveling anchor feet 5 are respectively installed at both ends of the bottom of each positioning base 1 to facilitate flexible movement of the equipment on the road surface and fixation during operation.
[0023] A translation drive mechanism is installed on the transverse guide main beam 3.
[0024] Specifically, the translation drive mechanism includes a transverse guide main beam 3, within which a horizontally positioned horizontal displacement groove 11 is formed. The translation drive mechanism includes a translation guide rail 12, a translation slider 13, and a suspension mounting slide 34. The translation slider 13 is slidably disposed within the horizontal displacement groove 11, and the back of the main mounting plate 14 is fixedly connected to the translation slider 13 via the suspension mounting slide 34. To achieve precise lateral movement control, the translation drive mechanism also includes a transverse drive motor 10 and a translation lead screw. The transverse drive motor 10 is fixed to the end of the transverse guide main beam 3, and its output shaft is coaxially fixedly connected to the translation lead screw. The translation lead screw passes through the translation slider 13 and is threadedly connected to it. By controlling the start of the transverse drive motor 10, the translation lead screw can be rotated, thereby moving the translation slider 13.
[0025] The lifting drive module is slidably mounted on the aforementioned translation drive mechanism. The lifting drive module includes a main mounting plate 14, a power control box 16 located on top of the main mounting plate 14, and a main lifting rod 15 and an auxiliary lifting rod 21 controlled by the power control box 16. To improve the absolute stability of operation, the lifting drive module also includes a Z-axis lifting guide assembly 6, an upper connecting bracket 17, and a lower connecting bracket 20.
[0026] The Z-axis lifting guide assembly 6 is fixed to the front side of the main mounting plate 14. The upper connecting bracket 17 is fixedly installed at the bottom of the front side of the main mounting plate 14, and the lower connecting bracket 20 is located directly below the upper connecting bracket 17. The telescopic part of the main lifting rod 15 passes through the upper connecting bracket 17 and is fixedly connected to the top of the auxiliary lifting rod 21. The auxiliary lifting rod 21 is vertically installed on the lower connecting bracket 20. In addition, a linear guide sleeve 18 is fixedly provided at the bottom of the power control box 16, and a guide post 19 is fixedly provided on the lower connecting bracket 20. The guide post 19 passes upward through the upper connecting bracket 17 and extends to slide into the linear guide sleeve 18. Through the guiding structure of the Z-axis lifting guide assembly 6, vibration and deviation during cutting and pressing can be effectively avoided.
[0027] The multi-state multiplexing execution component 7 is connected below the lifting drive module. The multi-state multiplexing execution component 7 includes an outer multiplexing cutting sleeve 22 driven to rise and fall by the main lifting rod 15, and a compaction block 35 driven by the auxiliary lifting rod 21 and sliding coaxially within the outer multiplexing cutting sleeve 22. The output end of the auxiliary lifting rod 21 extends vertically downward and is fixedly connected to the compaction block 35. A guide sleeve 23 is coaxially fixed to the top center of the outer multiplexing cutting sleeve 22, and an external gear ring 25 is fixedly fitted onto the outside of the guide sleeve 23. A rotary drive motor 26 is fixedly mounted on the top surface of the lower connecting bracket 20, and a drive gear 27 is coaxially fixedly connected to the output shaft of the rotary drive motor 26. The drive gear 27 meshes with the external gear ring 25 to transmit cutting power. Cutting gear rings 24 are distributed in a circular array along the bottom edge of the outer multiplexing cutting sleeve 22 for cutting asphalt pavement. The bottom of the compaction block 35 is a flat bearing surface, and a high-frequency vibrator 36 is embedded inside the compaction block 35 for subsequent high-frequency compaction operations.
[0028] The feeding module includes a cold repair material storage hopper 8, with an outer reusable cutting sleeve 22 connected to the cold repair material storage hopper 8 by a feeding outer pipe 28, and a telescopic feed pipe 33 between the cold repair material storage hopper 8 and the feeding outer pipe 28. The feeding module also includes a support plate 9 fixedly mounted between two sets of positioning bases 1. A mounting bracket for installing the cold repair material storage hopper 8 is fixedly mounted on the support plate 9. The feeding module also includes a feeding motor 32 fixedly mounted at the end of the feeding outer pipe 28, with the output shaft of the feeding motor 32 extending into the feeding outer pipe 28 and coaxially fixedly connected to a feeding auger 37.
[0029] In addition, to accommodate height changes, an upper mounting base 29 is fixedly installed at the bottom of the mounting frame. A following cylinder 31 is fixedly connected to the bottom of the upper mounting base 29, and a lower mounting base 30 is fixedly connected to the telescopic end of the following cylinder 31. The lower mounting base 30 is located between the outer feeding pipe 28 and the feeding motor 32. When the outer reusable cutting sleeve 22 rises and falls, the following cylinder 31 performs synchronous compensation telescopic movement, allowing the outer feeding pipe 28 to move smoothly and ensuring that the telescopic feed pipe 33 remains unobstructed at all times.
[0030] The entire workflow is as follows: Construction workers use the omnidirectional casters 4 to push the device to the damaged pothole in the asphalt pavement, and lower the leveling anchors 5 to rigidly lock the equipment to the road surface. The lateral drive motor 10 is started, which drives the main mounting plate 14 to move laterally via the translation screw, allowing the multi-state multiplexing actuator 7 to precisely align with the work area. Subsequently, the rotary drive motor 26 starts, driving the outer multiplexing cutting sleeve 22 to rotate at high speed through gear meshing. Simultaneously, the power control box 16 controls the main lifting rod 15 to extend downwards, causing the entire actuator to slowly descend, and the cutting gear ring 24 cuts into the road surface, completing the cutting and separation of the standard cylindrical asphalt core sample.
[0031] After the core sample is extracted, it can be stored and then tested using specialized equipment.
[0032] After the core sample is removed, the outer reusable cutting sleeve 22 moves down into the core extraction pit, acting as a protective mold to prevent material spillage. The feeding motor 32 starts, driving the feeding auger 37 to rotate. The repair material stored in the cold patch material storage hopper 8 falls into the feeding outer pipe 28 through the telescopic feed pipe 33 and is quantitatively delivered into the outer reusable cutting sleeve 22. After the feeding is completed, the auxiliary lifting rod 21 drives the compaction block 35 to press down onto the surface of the cold patch material again, and the high-frequency vibrator 36 is turned on simultaneously. Under the dual action of the sleeve's protective wall and high-frequency vibration, the cold patch material is compacted with high density. Finally, the main and auxiliary lifting rods 21 retract synchronously, completing the backfilling operation.
[0033] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A core sampling and testing device for cold patch repair of asphalt pavement, comprising two sets of positioning bases (1) and support columns (2) fixed on the positioning bases (1), wherein a transverse guide rail main beam (3) is installed across the top of the two sets of support columns (2), characterized in that, Also includes: A translation drive mechanism is mounted on the transverse guide rail main beam (3); The lifting drive module is slidably mounted on the translation drive mechanism. The lifting drive module includes a main mounting plate (14), a power control box (16) set on the top of the main mounting plate (14), and a main lifting rod (15) and an auxiliary lifting rod (21) controlled by the power control box (16). A multi-state multiplexing execution component (7) is connected below the lifting drive module. The multi-state multiplexing execution component (7) includes an outer multiplexing cutting sleeve (22) driven to rise and fall by the main lifting rod (15), and a compaction block (35) driven by the auxiliary lifting rod (21) and sliding coaxially within the outer multiplexing cutting sleeve (22). The bottom edge of the outer reusable cutting sleeve (22) is provided with a ring of cutting teeth (24). The bottom of the compaction block (35) is a flat force-bearing surface, and a high-frequency vibrator (36) is embedded inside the compaction block (35). The feeding module includes a cold repair material storage hopper (8), and a feeding outer pipe (28) is connected between the outer reusable cutting sleeve (22) and the cold repair material storage hopper (8). A telescopic feed pipe (33) is provided between the cold repair material storage hopper (8) and the feeding outer pipe (28).
2. The core sampling and testing device for cold patch repair of asphalt pavement according to claim 1, characterized in that: The translation drive mechanism includes a translation guide rail (12), a translation slider (13), and a suspension mounting block (34). The transverse guide main beam (3) is provided with a horizontally arranged horizontal displacement groove (11), and the translation slider (13) is slidably arranged in the horizontal displacement groove (11). The back of the main mounting plate (14) is fixedly connected to the translation slider (13) through the suspension matching slide (34).
3. The core sampling and testing device for cold patch repair of asphalt pavement according to claim 2, characterized in that: The translation drive mechanism also includes a transverse drive motor (10) and a translation lead screw; The transverse drive motor (10) is fixed to the end of the transverse guide main beam (3). The output shaft of the transverse drive motor (10) is coaxially fixedly connected to the translation screw. The translation screw passes through the translation slider (13) and is threadedly connected to it.
4. The core sampling and testing device for cold patch repair of asphalt pavement according to claim 1, characterized in that: The lifting drive module also includes a Z-axis lifting guide assembly (6), an upper connecting bracket (17), and a lower connecting bracket (20). The Z-axis lifting guide assembly (6) is fixed on the front side of the main mounting plate (14). The upper connecting bracket (17) is fixedly set at the bottom of the front side of the main mounting plate (14). The lower connecting bracket (20) is located directly below the upper connecting bracket (17). The telescopic part of the main lifting rod (15) passes through the upper connecting bracket (17) and is fixedly connected to the top of the auxiliary lifting rod (21). The auxiliary lifting rod (21) is vertically installed on the lower connecting bracket (20), and its output end extends vertically downward and is fixedly connected to the compaction block (35).
5. The core sampling and testing device for cold patch repair of asphalt pavement according to claim 4, characterized in that: The lifting drive module also includes a linear guide sleeve (18) and a guide column (19). The bottom end of the power control box (16) is fixedly provided with a linear guide sleeve (18), and a guide post (19) is fixedly provided on the lower connecting bracket (20). The guide post (19) passes through the upper connecting bracket (17) and extends to the linear guide sleeve (18).
6. The core sampling and testing device for cold patch repair of asphalt pavement according to claim 4, characterized in that: The outer reusable cutting sleeve (22) is coaxially fixed with a guide sleeve (23) at the top center, and an external toothed ring (25) is fixedly sleeved on the outside of the guide sleeve (23). A rotary drive motor (26) is fixedly installed on the top surface of the lower connecting bracket (20). A drive gear (27) is coaxially fixedly connected to the output shaft of the rotary drive motor (26). The drive gear (27) meshes with the external gear ring (25).
7. The core sampling and testing device for cold patch repair of asphalt pavement according to claim 1, characterized in that: The feeding module also includes a feeding motor (32) fixedly installed at the end of the feeding outer tube (28). The output shaft of the feeding motor (32) extends into the feeding outer tube (28) and is coaxially fixedly connected to the feeding auger (37).
8. The core sampling and testing device for cold patch repair of asphalt pavement according to claim 7, characterized in that: The feeding module also includes a support plate (9) fixedly set between two sets of positioning bases (1). The support plate (9) is fixedly provided with an installation frame for installing the cold replenishment material storage hopper (8). The bottom end of the installation frame is fixedly provided with an upper mounting seat (29). The bottom end of the upper mounting seat (29) is fixedly connected to a following cylinder (31). The telescopic end of the following cylinder (31) is fixedly connected to a lower mounting seat (30). The lower mounting seat (30) is located between the feeding outer pipe (28) and the feeding motor (32).
9. The core sampling and testing device for cold patch repair of asphalt pavement according to claim 1, characterized in that: The two sets of positioning bases (1) are arranged in parallel to each other, and each positioning base (1) is equipped with a universal moving wheel (4) and a leveling anchor foot (5) at both ends of its bottom.