Coring device for road detection
By designing a core-taking device that includes a base, a stand, a sliding structure, and a detachable core drill bit, the problem of the large size of the core-taking machine being inconvenient to load onto a vehicle was solved, achieving the effect of easy folding and storage and adaptability to small engineering vehicles.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-05
- Publication Date
- 2026-04-14
AI Technical Summary
Existing coring machines are large and difficult to disassemble, resulting in them taking up a lot of space when loaded onto vehicles, making it difficult to fit them completely into small engineering vehicles.
A core-taking device is designed, comprising a base, a stand, a sliding structure, a drive motor, a spindle, and a detachable core drill bit. The device is folded and stored using a support rod and a locking unit, and is combined with a guide frame and casters to improve stability and portability.
With a simple structure, it is easy to use, folds and stores easily, greatly reducing its size. It is suitable for small engineering vehicles such as pickup trucks and vans, and is easy to load.
Smart Images
Figure CN224122194U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of road engineering testing equipment, and in particular to a core sampling device for road testing. Background Technology
[0002] A core extractor, also known as a core extractor, is a mechanical device used to extract core samples from road surfaces. It is widely used in road construction.
[0003] The core drill has a two-column vertical structure with the drilling direction pointing vertically downwards. It includes a drilling and core-taking structure consisting of a gasoline engine, gearbox, spindle and drill bit, columns, lifting structure, cooling water pump, and walking mechanism. The core drill is mainly used to drill cores of concrete and asphalt concrete for compressive and flexural tests.
[0004] After use, the core drilling machine needs to be installed in small engineering vehicles such as pickup trucks and engineering vans. Because the core drilling machine is large in size and not easy to disassemble, it occupies a large amount of horizontal and vertical space when loading the vehicle, and it is difficult for a regular small engineering vehicle to fully accommodate it. Utility Model Content
[0005] To address the aforementioned technical problems, this utility model provides a core sampling device for road inspection.
[0006] The technical solution includes a base and a stand that is rotatably mounted on one side of the base. A sliding structure is slidably mounted on the stand. A main shaft is rotatably mounted on the sliding structure. A drive motor is also fixedly mounted on the sliding structure. The motor shaft of the drive motor is coaxially and fixedly connected to the main shaft. A core drill bit is detachably connected to the main shaft.
[0007] A support rod is also provided between the upright frame and the base. The support rod includes an outer rod rotatably disposed in the middle of the base, an inner rod slidably disposed inside the outer rod, and the inner rod rotatably connected to the middle of the upright frame.
[0008] A locking unit is provided at the upper end of the outer rod.
[0009] Preferably, the support frame includes two parallel channel steels, with the open ends of the two channel steels facing away from each other;
[0010] The two ends of the two channel steels are fixedly connected by a connecting plate;
[0011] A lead screw is fixedly installed on the connecting plate, and the lead screw is located between the two channel steels.
[0012] Preferably, the sliding structure includes a U-shaped sliding frame, with two rollers rotatably arranged at both ends of the open end of the sliding frame, and the two rollers on the same side sliding in the groove of the channel steel respectively;
[0013] The sliding frame is fixedly mounted on the closed end, and the main shaft and drive motor are both mounted on the mounting frame.
[0014] Preferably, a slider is fixedly disposed in the middle of the sliding frame, and the slider is sleeved on the outside of the lead screw; a driven sprocket is rotatably disposed on the slider, and the driven sprocket is threadedly connected to the lead screw;
[0015] A drive sprocket is fixedly mounted on the main shaft, and the drive sprocket and the driven sprocket are connected by a chain.
[0016] Preferably, the locking unit includes a sleeve fixedly mounted on the outer rod, and two handles are rotatably mounted on the sleeve, with one end of each handle being cam-shaped;
[0017] An annular groove is formed on the inner rod, and the groove cooperates with the cam end of the handle.
[0018] Preferably, a caster is fixedly installed at each end of one side of the base, and the casters are located on both sides of the upright frame;
[0019] A handrail is fixedly installed at each of the two ends on the other side of the base.
[0020] Preferably, a guide frame is fixed at the lower end of the upright, and a guide hole is started on the guide frame, the guide hole being coaxial with the main shaft.
[0021] The beneficial effects of the technical solution provided by this utility model embodiment are: simple structure, convenient to use, easy to fold and store, greatly reduced volume, suitable for pickup trucks and vans and other small engineering vehicles, and easy to load. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model. Figure 1 .
[0023] Figure 2 This is a schematic diagram of the overall structure of an embodiment of the present utility model. Figure 2 .
[0024] Figure 3 This is a schematic diagram of the support structure of an embodiment of the present utility model.
[0025] Figure 4 This is a schematic diagram of the sliding structure according to an embodiment of the present invention.
[0026] Figure 5 This is a cross-sectional view of the sliding structure according to an embodiment of the present invention.
[0027] Figure 6 This is a cross-sectional view of the support rod according to an embodiment of the present utility model.
[0028] The reference numerals in the attached drawings are as follows: 1. Base; 2. Stand; 3. Sliding structure; 4. Main shaft; 5. Drive motor; 6. Core drill bit; 7. Support rod; 8. Outer rod; 9. Inner rod; 10. Locking unit; 11. Channel steel; 12. Lead screw; 13. Sliding frame; 14. Roller; 15. Mounting frame; 16. Slider; 17. Driven sprocket; 18. Driven sprocket; 19. Chain; 20. Sleeve; 21. Handle; 22. Caster; 23. Handrail; 24. Guide frame. Detailed Implementation
[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Of course, the specific embodiments described herein are only for explaining this utility model and are not intended to limit it.
[0030] It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this utility model can be combined with each other.
[0031] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0033] Example 1
[0034] See Figures 1 to 6 This utility model provides a core sampling device for road inspection, including a base 1 and a stand 2 rotatably disposed on one side of the base 1. A sliding structure 3 is slidably disposed on the stand 2. A main shaft 4 is rotatably disposed on the sliding structure 3. A drive motor 5 is also fixedly disposed on the sliding structure 3. The motor shaft of the drive motor 5 is coaxially and fixedly connected to the main shaft 4. A core sampling drill bit 6 is detachably connected to the main shaft 4.
[0035] A support rod 7 is also provided between the upright frame 2 and the base 1. The support rod 7 includes an outer rod 8 rotatably disposed in the middle of the base 1, an inner rod 9 slidably disposed in the outer rod 8, and the inner rod 9 is rotatably connected to the middle of the upright frame 2.
[0036] A locking unit 10 is provided at the upper end of the outer rod 8.
[0037] The support frame 2 includes two parallel channel steels 11, with the open ends of the two channel steels 11 facing away from each other;
[0038] The two ends of the two channel steels 11 are fixedly connected by a connecting plate;
[0039] A lead screw 12 is fixedly installed on the connecting plate, and the lead screw 12 is located between two channel steels 11.
[0040] The sliding structure 3 includes a U-shaped sliding frame 13, with two rollers 14 rotatably mounted at both ends of the open end of the sliding frame 13, and the two rollers 14 on the same side sliding in the groove of the channel steel 11 respectively.
[0041] The sliding frame 13 is fixedly mounted on the closed end of the mounting bracket 15, and the main shaft 4 and the drive motor 5 are both mounted on the mounting bracket 15.
[0042] Start the drive motor 5, the motor shaft drives the main shaft 4 to rotate, which in turn causes the core drill bit 6 to rotate. Through the moving sliding structure 3, the rotating core drill bit 6 gradually contacts the road surface. As the pressure increases, the core drill bit 6 cuts into the road surface structure layer and begins drilling. During the drilling process, pay close attention to the motor's operating sound, equipment vibration, and whether the core drill bit 6 is drilling vertically. If any abnormality is found, stop the machine immediately for inspection and adjustment.
[0043] Scale marks can be set on the support frame 2 or marks can be set on the core drill bit 6 in advance to accurately control the core depth. When the predetermined depth is reached, the sliding structure 3 is stopped, and the core drill bit 6 is kept in its current position and rotated for several seconds to ensure that the core sample is completely cut and shaped so that it can be smoothly brought out of the road surface structure layer.
[0044] A slider 16 is fixedly installed in the middle of the sliding frame 13, and the slider 16 is sleeved on the outside of the lead screw 12; a driven sprocket 17 is rotatably installed on the slider 16, and the driven sprocket 17 is threadedly connected to the lead screw 12.
[0045] A drive sprocket 18 is fixedly mounted on the main shaft 4, and the drive sprocket 18 and the driven sprocket 17 are connected by a chain 19.
[0046] When the main shaft 4 rotates, it drives the driven sprocket 17 to rotate through the chain 19. When the driven sprocket 17 rotates, because it is threadedly connected to the lead screw 12, it will use the transmission characteristics of the thread to convert its own circumferential rotation into linear motion along the axis of the lead screw 12, thereby driving the sliding frame 13 to move up and down along the lead screw 12 together with the driven sprocket 17. Therefore, as the sliding frame 13 moves, the main shaft 4, together with the core drill bit 6 and the drive motor 5, adjusts its position up and down along the stand 2.
[0047] When the drive motor 5 drives the core drill bit 6 to rotate, it can realize the automatic feeding of the core drill bit 6, so that the core drill bit 6 can automatically perform drilling and core extraction operations.
[0048] Furthermore, the number of teeth on the driven sprocket 17 is greater than the number of teeth on the driving sprocket 18, and the transmission ratio is greater than 1. When the driving sprocket 18 rotates at high speed with the main shaft 4, it drives the driven sprocket 17 to rotate via the chain 19, and the speed of the driven sprocket 17 will be greatly reduced.
[0049] The slower rotation speed of the driven sprocket 17 also slows down the movement of the slider 16 along the lead screw 12, which can slowly push the core drill bit 6 to perform the drilling and core extraction function.
[0050] The locking unit 10 includes a sleeve 20 fixedly mounted on the outer rod 8, and two handles 21 rotatably mounted on the sleeve 20, one end of each handle 21 being cam-shaped.
[0051] An annular groove is formed on the inner rod 9, which mates with the cam end of the handle 21.
[0052] When in use, the stand 2 is erected. At this time, the inner rod 9 is pulled out to a certain length under the action of the stand 2. The user locks the inner rod 9 by operating the locking unit 10, holding the handle 21 and rotating it so that its cam end is engaged in the annular groove of the inner rod 9, providing stable support for the stand 2 when the equipment is used in the future.
[0053] When unlocking is required, simply turn handle 21 in the opposite direction, and the housing will lay down the stand 2, making it easy to move and store the device.
[0054] A caster 22 is fixedly installed at each end of one side of the base 1, and the caster 22 is located on both sides of the upright frame 2;
[0055] When the base 1 is placed flat on the ground, the casters 22 are lifted off the ground. At this time, the entire device is in full contact with the ground thanks to the wide and flat bottom surface of the base 1, which provides solid and reliable support for subsequent road core sampling operations, enhances the friction between the device and the ground, and improves the stability of the device during use.
[0056] A handrail 23 is fixedly installed at each of the two ends on the other side of the base 1.
[0057] The design of the handle 23 and casters 22 makes it easy for users to push the device. The entire device presents a low and flat posture. Users can hold the handle 23 and push the device to change the parking position of the device, or smoothly transfer it to the storage area, maintenance site, or the next road inspection point along a predetermined route.
[0058] A guide frame 24 is fixed at the lower end of the upright 2. A guide hole is started on the guide frame 24, and the guide hole is coaxial with the main shaft 4.
[0059] When the core drill bit 6 rotates and drills downward into the road surface under the drive of the drive motor 5, the guide hole of the guide frame 24 can constrain the movement direction of the core drill bit 6. Since the guide hole is coaxial with the main shaft 4, the drill bit can only move forward in a direction perpendicular to the road surface, avoiding the problem of the drill bit tilting due to various external force factors, such as slight shaking of the equipment or uneven road surface.
[0060] When using this utility model, the user can firmly grasp the handle 23 and push the device to change the device's parking position, or smoothly transfer it to the storage area, maintenance site, or the next road inspection point along a predetermined route. Then, the stand 2 is erected. At this time, the inner rod 9 is pulled out to a certain length under the action of the stand 2. The user locks the inner rod 9 by operating the locking unit 10, grasps the handle 21, and rotates it so that its cam end is engaged in the annular groove of the inner rod 9, providing stable support for the stand 2 when the equipment is used in the future.
[0061] Start the drive motor 5, the motor shaft drives the main shaft 4 to rotate, which in turn causes the core drill bit 6 to rotate. Through the moving sliding structure 3, the rotating core drill bit 6 gradually contacts the road surface. As the pressure increases, the core drill bit 6 cuts into the road surface structure layer and begins drilling operations. When the drive motor 5 drives the core drill bit 6 to rotate, it can realize the automatic feeding of the core drill bit 6, so that the core drill bit 6 can automatically perform drilling and core extraction operations.
[0062] 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, improvements, etc., 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 core sampling device for road inspection, characterized in that, Includes a base (1) and a stand (2) rotatably mounted on one side of the base (1). A sliding structure (3) is slidably mounted on the stand (2). A main shaft (4) is rotatably mounted on the sliding structure (3). A drive motor (5) is also fixedly mounted on the sliding structure (3). The motor shaft of the drive motor (5) is coaxially fixedly connected to the main shaft (4). A core drill bit (6) is detachably connected to the main shaft (4). A support rod (7) is also provided between the upright frame (2) and the base (1). The support rod (7) includes an outer rod (8) rotatably disposed in the middle of the base (1), an inner rod (9) slidably disposed in the outer rod (8), and the inner rod (9) rotatably connected to the middle of the upright frame (2). A locking unit (10) is provided at the upper end of the outer rod (8).
2. The core sampling device for road inspection according to claim 1, characterized in that, The support frame (2) includes two parallel channel steels (11), with the open ends of the two channel steels (11) facing away from each other; The two ends of the two channel steels (11) are fixedly connected by a connecting plate; A lead screw (12) is fixedly installed on the connecting plate, and the lead screw (12) is located between the two channel steels (11).
3. The core sampling device for road inspection according to claim 2, characterized in that, The sliding structure (3) includes a U-shaped sliding frame (13), with two rollers (14) rotatably arranged at both ends of the open end of the sliding frame (13), and the two rollers (14) on the same side slide in the groove of the channel steel (11). The sliding frame (13) is fixedly mounted on the closed end of the mounting frame (15), and the main shaft (4) and the drive motor (5) are both mounted on the mounting frame (15).
4. The core sampling device for road inspection according to claim 3, characterized in that, A slider (16) is fixedly installed in the middle of the sliding frame (13), and the slider (16) is sleeved on the outside of the lead screw (12); a driven sprocket (17) is rotatably installed on the slider (16), and the driven sprocket (17) is threadedly connected to the lead screw (12); The main shaft (4) is fixedly equipped with a drive sprocket (18), and the drive sprocket (18) and the driven sprocket (17) are connected by a chain (19).
5. The core sampling device for road inspection according to claim 1, characterized in that, The locking unit (10) includes a sleeve (20) fixedly mounted on the outer rod (8), and two handles (21) are rotatably mounted on the sleeve (20), with one end of the handle (21) being cam-shaped; An annular groove is provided on the inner rod (9), and the groove cooperates with the cam end of the handle (21).
6. The core sampling device for road inspection according to claim 1, characterized in that, A caster (22) is fixedly installed at each end of one side of the base (1), and the caster (22) is located on both sides of the stand (2); A handrail (23) is fixedly installed at each of the two ends of the other side of the base (1).
7. The core sampling device for road inspection according to claim 1, characterized in that, A guide frame (24) is fixed at the lower end of the upright (2), and a guide hole is started on the guide frame (24), which is coaxial with the main shaft (4).