A device for detecting and sampling the core of a thermal insulation layer
By introducing a piston, handle, and movable groove design into the core drilling and sampling device, combined with a scale display of the core length, and utilizing reverse torque to enhance connection stability and a multi-handle design, the problems of uncontrollable core drilling depth and dust splashing are solved, achieving accurate and safe sampling.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- MAANSHAN MCC17 ENG TECH CO LTD
- Filing Date
- 2025-08-21
- Publication Date
- 2026-07-21
AI Technical Summary
Existing core drilling and sampling devices for thermal insulation layers cannot visually display the drilling depth, and debris and dust are easily splashed during drilling, making it difficult to extract the core sample.
The drill barrel is designed with a piston, handle, and movable groove, and the core length is displayed with a scale. It is equipped with a removable cutting edge, a flared sleeve, and a transparent dust cover. The motor output end is opposite to the threaded fastening direction to enhance stability, and the multi-handle design makes it easy to operate.
It enables precise control of the core length, prevents excessive drilling depth, reduces debris and dust splashing, and improves operational safety and sampling accuracy.
Smart Images
Figure CN224535479U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of core sampling devices, and in particular to a core sampling device for thermal insulation layer testing. Background Technology
[0002] In the field of building energy conservation and structural safety, the external wall insulation layer is a core component of the building energy conservation system. Its construction quality is directly related to building energy consumption control, indoor environmental comfort, and wall structure durability. Core drilling testing of the insulation layer is a key means of assessing its thickness, bonding strength, and internal integrity. Accurate and efficient testing can not only ensure that the building meets energy conservation standards, but also detect potential safety hazards in advance, avoiding safety accidents caused by problems such as insulation layer detachment and hollowing. It is of great significance for promoting the development of green buildings and improving the quality of building projects.
[0003] In the existing technology, the core drilling and sampling device for thermal insulation layer generally has the following problems: First, the drill barrel is closed during the core sampling process, making it impossible to see the drilling depth directly, and excessive drilling depth can easily damage the device; Second, the protective structure is lacking, and the debris and dust generated during core drilling can easily fly, endangering the health of operators; In addition, the core sampling operation is cumbersome and the core sample is difficult to remove. Utility Model Content
[0004] To overcome the above shortcomings, this utility model provides a core drilling and sampling device for thermal insulation layers, which solves the problems of not being able to intuitively see the drilling depth, the easy splashing of debris and dust generated during core drilling, and the difficulty in removing the core sample.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a core drilling and sampling device for insulation layer, comprising a motor, a drill barrel, and a handle. The output end of the motor is threadedly connected to the drill barrel, and a battery is provided at the non-output end of the motor. A piston is provided inside the drill barrel, and the piston is fixedly connected to the handle. A movable groove is provided on the side of the drill barrel, and the handle passes through the movable groove and can move along it. The edge of the movable groove is provided with a scale. Handles are provided on the side and non-output end of the motor. A protective sleeve is fitted on the outer side of the motor axis, and a detachable cutting edge is provided at the end of the drill barrel.
[0006] As a further description of the above technical solution: the rotation direction of the motor output end is opposite to the threaded fastening direction of the drill barrel and the motor.
[0007] As a further description of the above technical solution: the sheath is made of rubber, is flared, with its opening facing away from the motor, and is detachably connected to the outside of the motor by a buckle.
[0008] As a further description of the above technical solution: a retractable transparent PVC dust cover is nested on the outermost front end of the sheath.
[0009] As a further description of the above technical solution: the two ends of the movable groove are provided with limit blocks, which are fixedly connected to the inner wall of the drill barrel, and the inner side of the limit block is provided with a buffer rubber pad.
[0010] As a further description of the above technical solution: the cutting edge is made of cemented carbide, the cutting edge angle is 30°~45°, and it is connected to the end of the drill barrel by hexagonal bolts.
[0011] As a further description of the above technical solution: the battery is a rechargeable lithium battery and is equipped with a Type-C fast charging interface.
[0012] As a further description of the above technical solution: the handle is welded and fixed to the motor housing, and the surface is covered with an anti-slip material layer.
[0013] This utility model has the following beneficial effects:
[0014] 1. In this utility model, the piston, handle, and movable groove inside the drill barrel work together to facilitate the easy removal of core samples, solving the problem of difficult core removal in existing devices; the displacement of the handle and the scale on the edge of the movable groove can intuitively show the core removal length, which is convenient for precise control of the core removal length, ensuring the standardization of the test sample, and preventing damage to the device due to excessive drilling depth; at the same time, the detachable cutting edge is compatible with insulation layer materials of different hardness, expanding the applicability of the equipment.
[0015] 2. In this utility model, the design of the motor output end rotating in the opposite direction to the threaded fastening direction enhances the connection stability by using reverse torque and avoids loosening of the drill barrel; the segmented flared sheath and the retractable transparent dust cover work together to form double protection, effectively blocking debris and dust and protecting the health of operators; multiple handles provide operators with more flexible gripping points, making it easier to stabilize the device during core drilling, reducing drilling deviation caused by motor vibration, and ensuring the accuracy of the sampling position. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of a core drilling and sampling device for thermal insulation layer proposed in this utility model;
[0017] Figure 2 In this utility model Figure 1 Sectional view at point AA;
[0018] Figure 3 This is a schematic diagram of the drill cylinder structure of a core drilling and sampling device for thermal insulation layer proposed in this utility model.
[0019] Legend:
[0020] 1. Motor; 2. Battery; 3. Handle; 4. Drill barrel; 41. Movable groove; 42. Scale; 43. Limit block; 5. Handle; 6. Piston; 7. Protective sleeve; 8. Retractable transparent PVC dust cover; 9. Cutting blade. Detailed Implementation
[0021] 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.
[0022] Reference Figure 1-3 This utility model provides an embodiment of a core drilling and sampling device for thermal insulation layers, comprising a motor 1, a drill cylinder 4, and a handle 5. The output end of the motor 1 is threadedly connected to the drill cylinder 4, and a battery 2 is provided at the non-output end of the motor 1. A piston 6 is provided inside the drill cylinder 4, and the piston 6 is fixedly connected to the handle 5. A movable groove 41 is provided on the side of the drill cylinder 4, and the handle 5 passes through the movable groove 41 and can move along it. A scale 42 is provided on the edge of the movable groove 41. A handle 3 is provided on the side and non-output end of the motor 1. A protective sleeve 7 is fitted on the outer side of the motor 1 along the axial direction. A detachable cutting edge 9 is provided at the end of the drill cylinder 4.
[0023] Before sampling begins, push handle 5 to the frontmost position (i.e., the end closest to the cutting edge 9). As the drilling depth of the drill barrel 4 increases, the core sample will push handle 5 backward. The core length can be visually observed by the displacement of handle 5 in conjunction with the scale 42 on the edge of the movable groove 41, facilitating precise control of the core length, ensuring the standardization of the test sample, and preventing damage to the device due to excessive drilling depth. The detachable cutting edge 9 adapts to different working conditions. The motor 1 provides drilling power, the drill barrel 4 works with the cutting edge 9 to complete the drilling, the piston 6 and handle 5 work together to remove the core sample, the battery 2 provides portable power, the sheath 7 provides safety protection, and multiple handles 3 provide operators with more flexible gripping points, facilitating device stability during core drilling, reducing drilling deviation caused by motor vibration, and ensuring the accuracy of the sampling position.
[0024] Specifically, the rotation direction of the output end of motor 1 is opposite to the thread tightening direction of drill barrel 4 and motor 1; by utilizing the reverse torque generated when motor 1 is working, the preload of the threaded connection can be enhanced, avoiding the loosening of drill barrel 4 or the increase of connection gap due to vibration during core drilling, significantly improving the operational stability of the equipment, reducing sampling interruptions caused by connection problems, and extending the service life of components.
[0025] Specifically, the protective sleeve 7 is made of rubber and is flared, with its opening facing away from the motor 1. It is detachably connected to the outside of the motor 1 by a buckle. The flared rubber protective sleeve uses its elastic buffering properties to block debris from flying during drilling. The flared structure expands the protection range (covering the operator's arm and surrounding area). The detachable structure facilitates daily maintenance, extends the service life of the protective sleeve, and continuously ensures operational safety.
[0026] Specifically, the outermost part of the sheath 7 is nested with a retractable transparent PVC dust cover 8; the transparent material ensures visibility during operation and further blocks the spread of dust without affecting the observation of the drill core position; the retractable characteristics adapt to different drill core depths, and together with the sheath 7, they form a dual protection of "anti-chip + anti-dust", reducing the impact of dust on the health of operators.
[0027] Specifically, limit blocks 43 are provided at both ends of the movable groove 41 and are fixedly connected to the inner wall of the drill barrel 4. The inner side of the limit block 43 is provided with a buffer rubber pad. During sampling, the core sample pushes the handle 5 to move along the movable groove 41. The scale 42 on the edge of the movable groove 41 can be used to visually display the core length, realize precise control of the core depth, ensure the standardization of the test sample, and avoid drilling too deep and damaging the device. The limit block 43 restricts the movement range of the handle 5 to prevent the piston 6 from moving excessively and causing structural damage. The buffer rubber pad reduces the impact of collision and further protects the inner wall of the drill barrel 4 and the piston 6, ensuring the stability of the core sampling operation.
[0028] Specifically, the cutting edge 9 is made of cemented carbide with a cutting edge angle of 40°, and is connected to the end of the drill barrel 4 by hexagonal bolts. The cemented carbide cutting edge has high hardness and strong wear resistance, and is suitable for insulation layers of different hardness (such as foamed cement, polystyrene board, etc.). The hexagonal bolt connection enables quick disassembly and replacement of the cutting edge, expands the applicability of the equipment, and the quick replacement design reduces downtime and maintenance costs.
[0029] Specifically, Battery 2 uses a rechargeable lithium battery and is equipped with a Type-C fast charging interface; the rechargeable lithium battery provides independent power supply, eliminating the limitation of external power cords, significantly improving the portability of the device, and adapting to working scenarios without external power supply, such as high-altitude and outdoor environments.
[0030] Specifically, the handle 3 is welded and fixed to the housing of the motor 1, and the surface is covered with an anti-slip material layer; the welding and fixing ensures the connection strength, and the surface anti-slip material layer (such as silicone) enhances the grip friction, reduces the risk of hand slippage, reduces hand fatigue during long-term operation, and improves the safety and comfort of operation.
[0031] Working principle: Before sampling, push the handle 5 to the front end (the end closest to the cutting edge 9). The motor 1 provides drilling power, and the drill barrel 4 works with the cutting edge 9 to complete the drilling. During the sampling process, the core sample pushes the handle 5 to move along the movable groove 41. The core length can be intuitively grasped through the scale 42 on the edge of the movable groove. When the motor 1 rotates, the output end rotates in the opposite direction to the thread tightening direction. The threaded connection becomes tighter as the torque increases, preventing the drill barrel from loosening. The sheath 7 and the retractable transparent PVC dust cover 8 block debris and dust. After the core is taken, the core sample can be easily removed by pulling the piston 6 with the handle 5.
[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.
Claims
1. A core drilling and sampling device for thermal insulation layer, comprising a motor (1), a drill barrel (4), and a handle (5), characterized in that: The output end of the motor (1) is threadedly connected to the drill barrel (4). A battery (2) is provided at the non-output end of the motor (1). A piston (6) is provided inside the drill barrel (4). The piston (6) is fixedly connected to the handle (5). A movable groove (41) is provided on the side of the drill barrel (4). The handle (5) passes through the movable groove (41) and can move along it. A scale (42) is provided on the edge of the movable groove (41). A handle (3) is provided on the side and non-output end of the motor (1). A protective sleeve (7) is provided on the outer side of the motor (1) along the axis. A detachable cutting edge (9) is provided at the end of the drill barrel (4).
2. The thermal insulation layer core drilling and sampling device according to claim 1, characterized in that: The rotation direction of the output end of the motor (1) is opposite to the thread fastening direction of the drill barrel (4) and the motor (1).
3. The thermal insulation layer core drilling and sampling device according to claim 1, characterized in that: The sheath (7) is made of rubber, is horn-shaped, and its opening faces away from the motor (1). It is detachably connected to the outside of the motor (1) by a buckle.
4. The thermal insulation layer core drilling and sampling device according to claim 3, characterized in that: The outermost part of the sheath (7) is nested with a retractable transparent PVC dust cover (8).
5. The thermal insulation layer core drilling and sampling device according to claim 1, characterized in that: The two ends of the movable groove (41) are provided with limit blocks (43), which are fixedly connected to the inner wall of the drill barrel (4). The inner side of the limit block (43) is provided with a buffer rubber pad.
6. The thermal insulation layer core drilling and sampling device according to claim 1, characterized in that: The cutting edge (9) is made of cemented carbide and has a cutting edge angle of 30°~45°. It is connected to the end of the drill barrel (4) by a hexagonal bolt.
7. The thermal insulation layer core drilling and sampling device according to claim 1, characterized in that: The battery (2) is a rechargeable lithium battery and is equipped with a Type-C fast charging interface.
8. The thermal insulation layer core drilling and sampling device according to claim 1, characterized in that: The handle (3) is welded and fixed to the motor (1) housing, and the surface is covered with an anti-slip material layer.