A concrete core drilling apparatus

Abstract

This utility model discloses a concrete core drilling device, belonging to the field of core drilling, including a working frame and a core drilling assembly. The core drilling assembly includes a support plate installed at the top of the working frame and a core drilling rod. A ring plate is slidably connected to the inner wall of the core drilling rod. A pressure plate is fixedly connected to the lower end of the ring plate by a compression spring. A locking block is fixedly connected inside the pressure plate by a compression spring. A locking groove is provided on the inner wall of the core drilling rod corresponding to the locking block. Through the coordinated use of these devices, the efficiency and integrity of core drilling are improved, and the phenomenon of low core drilling efficiency caused by bumps and vibrations is avoided. Through the mutual cooperation of the ring plate, compression spring, pressure plate, locking block, locking groove and stranded wire set inside the core drilling rod, after the core is drilled, the stranded wire is pulled to drive the pressure plate to vibrate the core sample, thereby pushing the core sample from the inside out, thus improving the efficiency and integrity of its extraction.

Description

Technical Field

[0001] This utility model relates to the field of core drilling technology, specifically a concrete core drilling device. Background Technology

[0002] Concrete core drilling is a technique that uses specialized drilling equipment (such as a diamond drill) to drill cylindrical concrete core samples from hardened concrete structures (such as walls, floors, bridges, and roads). Its core purpose is to obtain representative concrete samples for subsequent quality testing, performance analysis, or structural evaluation.

[0003] An investigation revealed a utility model patent for a concrete core drilling machine (publication number: CN218381695U), comprising a processing table and a core drilling device. The top of the processing table is fixedly connected to the core drilling device. Through holes are provided on both sides of the top of the processing table. A pushing component is located on the left side of the processing table. The pushing component includes a fixed base fixedly connected to the processing table. A cylinder is fixedly connected to one side of the fixed base, and two symmetrically arranged fixed plates are fixedly connected to the surface of the cylinder's output end. This utility model offers the advantage of ease of use. In actual use, it automatically clamps and limits the movement of workpieces of different sizes, avoiding the need for manual support and external equipment for fixation during processing. This saves time and effort, improves user efficiency, and in the long run, reduces the user's workload and increases their profits.

[0004] Although the aforementioned patent improves the limiting and clamping effect during concrete core sampling by setting up components such as the pusher assembly, cylinder, and fixing plate, and through the cooperation of these components, thus avoiding the need for manual support during operation, the core sampling process is still difficult. As the core sampling drill bit rotates and presses down to extract the core, the friction between the drill rod and the core sample is relatively large after the core sampling is completed, and the contact area between the external sample and the core sample is small. Therefore, it is difficult to remove the core sample from the drill rod. Continuous bumping and vibration are often required to remove the core sample. This operation is not only inefficient but also increases the labor intensity of the operators.

[0005] Therefore, this utility model provides a concrete core drilling device to solve the above problems. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] This utility model provides a concrete core drilling device, which aims to solve the problems mentioned in the background art.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A concrete drilling and coring device includes a working frame and a coring assembly, wherein the coring assembly includes a support plate mounted on the top of the working frame;

[0011] The core sampling assembly also includes a core sampling drill rod, an inner wall of which is slidably connected to a ring plate. The bottom end of the ring plate is fixedly connected to a pressure plate by a compression spring. The inside of the pressure plate is fixedly connected to a locking block by a compression spring. The inner wall of the core sampling drill rod is provided with a locking groove corresponding to the locking block. There are multiple locking grooves. The outer wall of the support plate is provided with a driving assembly.

[0012] As a preferred technical solution of this application, the outer wall of the core drill rod is slidably sleeved with a pressing rod corresponding to two of the slots, the outer wall of the core drill rod is provided with a threaded groove, and the upper top end of the pressure plate is fixedly connected with a stranded wire, which passes through the ring plate and the core drill rod and is clamped to the upper top end of the core drill rod.

[0013] As a preferred technical solution of this application, the drive assembly includes a retainer mounted on the outer wall of the support plate, a hydraulic rod installed inside the retainer, and a connecting plate fixedly sleeved at the output end of the hydraulic rod.

[0014] As a preferred technical solution of this application, a drilling motor is installed at the bottom end of the connecting plate, and the output end of the drilling motor is connected to the outer wall of the core drill rod through a coaxial sleeve.

[0015] As a preferred technical solution of this application, a water storage tank is fixedly connected to the top of the work frame, a water pump is installed inside the water storage tank, a water injection pipe is installed on the outer side wall of the connecting plate, and the input end of the water injection pipe is fixedly connected to the output end of the water pump through a flexible hose.

[0016] As a preferred technical solution of this application, a sample storage seat is installed at the top of the work frame, and a core storage slot is formed at the top of the sample storage seat. The number of core storage slots is multiple.

[0017] As a preferred technical solution of this application, a push rod is installed at the top of the work frame, and a caster wheel is fixedly connected to the bottom of the work frame.

[0018] (III) Beneficial Effects

[0019] 1. By designing the core extraction assembly, the efficiency and integrity of core extraction can be improved through the cooperation of various components, avoiding the phenomenon of low core extraction efficiency caused by bumps and vibrations. Through the cooperation of the annular plate, compression spring, pressure plate, clamping block, clamping groove and stranded wire set in the core extraction drill rod, after the core extraction is completed, the above components work together to pull the stranded wire to drive the pressure plate to vibrate the core sample, thereby pushing the core sample from the inside out, thus improving the efficiency and integrity of its extraction.

[0020] 2. Through the cooperation of the water storage tank, water pump, water injection pipe and hose, water can be pumped into the core sampling point during the core drilling process. This can improve the lubrication of core drilling and provide heat dissipation for the drill rod, avoiding overheating and damage to the drill rod due to continuous core drilling, and further improving the efficiency and stability of core drilling. Attached Figure Description

[0021] Figure 1 A schematic diagram of the overall structure of a concrete core drilling and sampling device;

[0022] Figure 2 This is a schematic diagram of the internal structure of a core drilling rod in a concrete core drilling and sampling device.

[0023] Figure 3 This is a schematic diagram of the stranded wire in a concrete core drilling and sampling device.

[0024] Figure 4 This is a schematic diagram of the internal structure of a water storage tank in a concrete core drilling device.

[0025] In the picture:

[0026] 1. Working frame; 2. Support plate; 3. Core drill rod; 4. Ring plate; 5. Compression spring; 6. Pressure plate; 7. Compression spring; 8. Clamping block; 9. Clamping slot; 10. Pressing rod; 11. Stranded wire; 12. Cage; 13. Hydraulic rod; 14. Connecting plate; 15. Drilling motor; 16. Coaxial sleeve; 17. Water tank; 18. Water pump; 19. Water injection pipe; 20. Hose; 21. Sample storage seat; 22. Core storage slot; 23. Push rod. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] This utility model provides a concrete core drilling and sampling device, such as... Figures 1-4 As shown, the concrete drilling and coring equipment includes a working frame 1 and a coring assembly, the coring assembly including a support plate 2 installed on the top of the working frame 1;

[0029] The core sampling assembly also includes a core sampling drill rod 3. A ring plate 4 is slidably connected to the inner wall of the core sampling drill rod 3. A pressure plate 6 is fixedly connected to the bottom end of the ring plate 4 by a compression spring 5. A locking block 8 is fixedly connected to the inside of the pressure plate 6 by a compression spring 7. A locking groove 9 is opened on the inner wall of the core sampling drill rod 3 corresponding to the locking block 8. There are multiple locking grooves 9. A drive assembly is provided on the outer wall of the support plate 2.

[0030] The outer wall of the core drill rod 3 is slidably fitted with a pressing rod 10 corresponding to two of the slots 9. The outer wall of the core drill rod 3 is provided with a threaded groove. The top end of the pressure plate 6 is fixedly connected with a stranded wire 11, which passes through the ring plate 4 and the core drill rod 3 and is clamped at the top end of the core drill rod 3.

[0031] The drive assembly includes a retainer 12 mounted on the outer wall of the support plate 2, a hydraulic rod 13 installed inside the retainer 12, and a connecting plate 14 fixedly sleeved at the output end of the hydraulic rod 13.

[0032] A drilling motor 15 is installed at the bottom of the connecting plate 14. The output end of the drilling motor 15 is connected to the outer wall of the core drill rod 3 via a coaxial sleeve 16.

[0033] Specifically, the work frame 1 provides sufficient stability for the core sampling assembly, ensuring its safety during the core sampling process. The core sampling assembly, through the coordinated operation of its components, improves the core sample extraction speed and avoids sampling difficulties caused by excessive friction. Pulling the stranded wire 11 causes the pressure plate 6 to shift inside the core sampling drill rod 3. Releasing the wire allows the compression spring 5 to reset, causing the pressure plate 6 to strike the end of the core sample, generating an outward pushing force and thus improving extraction efficiency. During core sampling, the core sample is gradually generated inside the core sampling drill rod 3. The pressure plate 6 moves upward, which in turn causes the compression spring 5 to be continuously compressed. The locking blocks 8 on both sides of the pressure plate 6, together with the compression spring 7 and the locking groove 9, can lock the core drill rod 3 with the pressure plate 6. The locking can be disengaged by pressing the pressing rod 10, which makes it easier to take out the core sample. With the setting of the retainer 12, hydraulic rod 13, connecting plate 14 and drilling motor 15, the hydraulic rod 13 can drive the core drill rod 3 to move longitudinally. With the rotation of the drilling motor 15, the core drill rod 3 can quickly perform core extraction on the concrete.

[0034] A water storage tank 17 is fixedly connected to the top of the work frame 1. A water pump 18 is installed inside the water storage tank 17. A water injection pipe 19 is installed on the outer side wall of the connecting plate 14. The input end of the water injection pipe 19 is fixedly connected to the output end of the water pump 18 through a hose 20.

[0035] A sample storage seat 21 is installed at the top of the work frame 1. A core storage slot 22 is opened at the top of the sample storage seat 21. There are multiple core storage slots 22.

[0036] A push rod 23 is installed at the top of the work frame 1, and a caster wheel is fixedly connected to the bottom of the work frame 1.

[0037] Specifically, the water tank 17, water pump 18, water injection pipe 19, and hose 20 work together to improve efficiency during core drilling by using the impact of water. This lubricates the borehole and reduces the high temperature generated by friction in the drill rod, further improving the stability of the borehole. After sampling, the core sample can be stored in the sample storage seat 21 and multiple core storage slots 22 to prevent the core sample from breaking during transport. The push rod 23 and casters further enhance the flexibility and applicability of the device.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A concrete core drilling device, comprising a working frame (1) and a core drilling assembly, characterized in that: The core extraction assembly includes a support plate (2) mounted on the top of the work frame (1); The core sampling assembly also includes a core sampling drill rod (3), an inner wall of which is slidably connected to a ring plate (4), the bottom end of which is fixedly connected to a pressure plate (6) by a compression spring (5), and the inside of the pressure plate (6) is fixedly connected to a snap-fit ​​block (8) by a compression spring (7). The inner wall of the core sampling drill rod (3) is provided with a snap-fit ​​groove (9) corresponding to the snap-fit ​​block (8), and there are multiple snap-fit ​​grooves (9). The outer wall of the support plate (2) is provided with a drive assembly.

2. The concrete core drilling equipment according to claim 1, characterized in that: The outer wall of the core drill rod (3) is slidably fitted with a pressing rod (10) corresponding to two of the slots (9). The outer wall of the core drill rod (3) is provided with a threaded groove. The top end of the pressure plate (6) is fixedly connected with a stranded wire (11), and the stranded wire (11) passes through the ring plate (4) and the core drill rod (3) and is clamped to the top end of the core drill rod (3).

3. The concrete core drilling equipment according to claim 1, characterized in that: The drive assembly includes a retainer (12) mounted on the outer wall of the support plate (2), and a hydraulic rod (13) is installed inside the retainer (12). The output end of the hydraulic rod (13) is fixedly sleeved with a connecting plate (14).

4. The concrete core drilling equipment according to claim 3, characterized in that: A drilling motor (15) is installed at the bottom of the connecting plate (14), and the output end of the drilling motor (15) is connected to the outer wall of the core drill rod (3) through a coaxial sleeve (16).

5. A concrete core drilling device according to claim 3, characterized in that: A water storage tank (17) is fixedly connected to the top of the work frame (1). A water pump (18) is installed inside the water storage tank (17). A water injection pipe (19) is installed on the outer side wall of the connecting plate (14). The input end of the water injection pipe (19) is fixedly connected to the output end of the water pump (18) through a hose (20).

6. The concrete core drilling equipment according to claim 1, characterized in that: The upper top of the work frame (1) is equipped with a sample storage seat (21), and the upper top of the sample storage seat (21) is provided with a core storage groove (22), and there are multiple core storage grooves (22).

7. A concrete core drilling device according to claim 6, characterized in that: A push rod (23) is installed at the top of the work frame (1), and a caster wheel is fixedly connected to the bottom of the work frame (1).

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