A drilling device for insulation detection
By introducing an elastic guiding mechanism and a composite buffer interface into the insulation layer inspection device, the problem of borehole axis deviation was solved, and standardized and mechanized insulation layer inspection was achieved, improving inspection accuracy and structural integrity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SINO SINGAPORE TIANJIN ECO CITY ENVIRONMENT & GREEN BUILDING EXPERIMENTAL CENT CO LTD
- Filing Date
- 2025-07-25
- Publication Date
- 2026-07-07
AI Technical Summary
The existing drilling equipment for thermal insulation layer testing lacks a guiding device, which causes the drilling axis to be non-perpendicular to the surface of the thermal insulation layer, affecting the accuracy of the test data and potentially damaging the structural integrity of the thermal insulation layer.
The device employs a drive motor, drive rod, drill bit, external sleeve, elastic guide mechanism, and handheld support. It utilizes a ring spring and guide frame to form an elastic tension network, combined with a composite buffer interface of rubber pad and slide bar, to achieve self-centering and axial trajectory stability, and to perform standardized controlled drilling through mechanical elastic properties.
It effectively eliminates random tilting errors caused by manual operation, ensures the verticality of the drilling axis, improves the accuracy of test data, and has adaptive characteristics for curved walls, reducing damage to the insulation layer.
Smart Images
Figure CN224471303U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of building inspection technology, and in particular relates to a drilling device for inspecting insulation layers. Background Technology
[0002] A drilling device for thermal insulation layer inspection is a tool specifically designed to obtain core samples or perform opening inspections on building insulation systems (such as external wall insulation, roof insulation, etc.). Its core purpose is to allow inspectors to visually observe the internal structure of the insulation layer, measure its thickness, sample and analyze material properties (such as density, moisture content, thermal conductivity, composition, etc.), and check the bonding quality through minimally invasive or controlled destructive methods.
[0003] Because the drilling equipment used for insulation layer inspection in related technologies lacks a guiding device, it is easy for the drill axis to be non-perpendicular to the surface of the insulation layer, resulting in tilted drilling. The tilt generated during operation increases the measurement path, causing the measured thickness value to be greater than the true thickness of the insulation layer, severely affecting the accuracy of the inspection data. Furthermore, tilted drilling may also damage the internal structural integrity of the insulation layer, causing secondary damage such as hollowing or delamination, further affecting the subsequent repair effect. Summary of the Invention
[0004] In view of this, the present invention aims to at least partially solve one of the related technical problems.
[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:
[0006] A drilling device for detecting thermal insulation layers includes a drive motor, a drive rod, a drill bit, an outer sleeve, a drive sleeve, an elastic guide mechanism, a mounting structure, and two handheld supports.
[0007] The drive sleeve is provided at the tail of the drill bit. One end of the drive rod is connected to the drive sleeve by a pin. The other end of the drive rod is provided with a direction shaft, which is connected to the output end of the drive motor.
[0008] The drive rod is located at the axial position inside the outer sleeve. One end of the outer sleeve is provided with a flared sleeve, which is rotatably engaged with the drive sleeve. The other end of the outer sleeve is provided with a thickened sleeve. Two hand-held brackets are symmetrically arranged on both sides of the thickened sleeve, and each hand-held bracket is detachably connected to the thickened sleeve.
[0009] One end of the elastic guide mechanism is slidably engaged with the outer sleeve, and the other end of the elastic guide mechanism is connected to the mounting structure. The mounting structure is provided with an adsorption component, which is used to adsorb onto the wall surface.
[0010] Furthermore, the elastic guiding mechanism includes two annular springs, multiple guide frames, multiple roller structures, and multiple sliding guide structures. The multiple guide frames are evenly arranged circumferentially outside the outer sleeve. The outer wall of the outer sleeve is evenly arranged with multiple guide grooves. One end of each guide frame slides in contact with a guide groove through a roller structure, and the other end of each guide frame is connected to the mounting structure through a sliding guide structure. Both annular springs are sleeved on the outside of the multiple guide frames.
[0011] Furthermore, the roller structure includes two pulleys, the guide frame includes a support frame and two support rods, the two support rods are arranged side by side at one end of the support frame, the other end of the support frame is provided with a thickened pad, the sliding guide structure is provided on the thickened pad, each support rod is provided with a pulley at its inner end, the pulley is slidably engaged with the guide groove, and the outer end face of the support frame (210) is provided with two grooves that can engage with the annular spring.
[0012] Furthermore, the sliding guide structure includes a slide rod, a stop block, and a rubber pad. The slide rod passes through the thickened pad block and the rubber pad and is threadedly connected to the mounting structure. The stop block is disposed at the outer end of the slide rod, and the rubber pad is disposed between the thickened pad block and the mounting structure.
[0013] Furthermore, the mounting structure includes a mounting sleeve and an annular mounting plate. The inner side of the annular mounting plate is integrally connected to the end of the mounting sleeve. The adsorption component is disposed on the outer end face of the annular mounting plate. The mounting sleeve is threadedly connected to the slide rod of the sliding guide structure.
[0014] Furthermore, the adsorption assembly comprises multiple vacuum suction cups, which are evenly distributed on the outer end face of the annular mounting plate.
[0015] Furthermore, the adsorption component is a fast-curing adhesive layer.
[0016] Furthermore, the number of guide frames is three.
[0017] Compared with existing technologies, the drilling device for detecting thermal insulation layers described in this utility model has the following advantages:
[0018] 1. The ring spring and the circumferentially distributed guide frame together form an elastic tension network, which enables the outer sleeve to achieve self-centering through the slight floating of the roller in the guide groove when it is subjected to the drilling load. This not only eliminates the instantaneous deviation caused by local unevenness of the wall surface or uneven force applied by the operator, but also maintains the reference stability of the axial trajectory through the spring tension.
[0019] 2. The rubber pad and the threaded sliding rod in the sliding guide structure form a composite buffer interface. The rigid connection between the sliding rod and the thread creates a precise guiding reference for axial displacement. The viscoelastic interlayer formed by the rubber pad between the stop and the installation structure cleverly transforms the off-center load torque caused by the operator's force fluctuations or the micro-undulations of the wall into heat dissipation due to friction within the molecular chains. This not only does not hinder necessary micro-tilt adjustment, but also continuously corrects and returns to the axis through the elastic memory effect.
[0020] 3. The statically determinate support system with three sets of guide frames forms a closed force flow ring under the prestressing clamping of the annular spring, giving the device a ball joint-like self-aligning characteristic under external force disturbance; while the viscoelastic deformation characteristics of the rubber pad transform the sudden load into a continuously decaying damped oscillation, ultimately maintaining the axial orientation capability during the transient impact stage when the drill bit cuts into the insulation layer. Its comprehensive effect is that it effectively eliminates the random tilting error caused by manual operation, and gives the device topological adaptive characteristics for curved walls and loose insulation substrates, thereby upgrading the traditional open drilling operation that relies on technician experience to a standardized and controlled process based on the intrinsic mechanical elasticity. Attached Figure Description
[0021] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:
[0022] Figure 1 This is a schematic diagram of a drilling device for detecting thermal insulation layers according to an embodiment of the present invention;
[0023] Figure 2 This is a schematic diagram of the guide frame structure according to an embodiment of the present utility model;
[0024] Figure 3 This is a schematic diagram of the vacuum suction cup structure described in an embodiment of the present invention;
[0025] Figure 4 This is a schematic diagram of the sliding guide structure described in an embodiment of the present invention;
[0026] Figure 5 This is a schematic diagram of the drill bit and drive sleeve structure described in an embodiment of the present utility model.
[0027] Explanation of reference numerals in the attached figures:
[0028] 100. Outer sleeve; 110. Handheld bracket; 120. Guide groove; 200. Guide frame; 210. Support frame; 220. Support rod; 230. Pulley; 300. Ring spring; 400. Mounting structure; 410. Vacuum suction cup; 500. Sliding guide structure; 610. Drive rod; 620. Drill bit; 621. Pin. Detailed Implementation
[0029] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0030] 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 of 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.
[0031] 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.
[0032] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0033] A drilling device for detecting thermal insulation layers, such as Figure 1 As shown, it includes a drive motor, a drive rod 610, a drill bit 620, an outer sleeve 100, a drive sleeve, an elastic guide mechanism, a mounting structure 400, and two handheld supports 110; the drill bit 620 is provided with a drive sleeve at its tail end, one end of the drive rod 610 is connected to the drive sleeve through a pin 621, and the other end of the drive rod 610 is provided with a directional shaft, which is connected to the output end of the drive motor;
[0034] The drive rod 610 is located at the axial position inside the outer sleeve 100. One end of the outer sleeve 100 is provided with a flared sleeve, which is rotatably engaged with the drive sleeve. The other end of the outer sleeve 100 is provided with a thickened sleeve. Two hand-held supports 110 are symmetrically arranged on both sides of the thickened sleeve, and each hand-held support 110 is detachably connected to the thickened sleeve.
[0035] One end of the elastic guiding mechanism is slidably engaged with the outer sleeve 100, and the other end is connected to the mounting structure 400. The mounting structure 400 is equipped with an adsorption component for adsorbing the wall surface. The elastic guiding mechanism includes two annular springs 300, multiple guide frames 200, multiple roller structures, and multiple sliding guide structures 500. The multiple guide frames 200 are evenly arranged circumferentially outside the outer sleeve 100. Multiple guide grooves 120 are evenly arranged circumferentially on the outer wall of the outer sleeve 100. One end of the guide frame 200 is slidably engaged with a guide groove 120 through a roller structure, and the other end of the guide frame 200 is connected to the mounting structure 400 through a sliding guide structure 500. Both annular springs 300 are sleeved on the outside of the multiple guide frames 200. The annular spring 300 and the circumferentially distributed guide frames 200 together form an elastic tension network, enabling the outer sleeve 100 to achieve self-centering through the slight floating of the rollers within the guide groove 120 when subjected to drilling eccentric loads. This not only eliminates instantaneous offsets caused by local unevenness of the wall surface or uneven force applied by the operator, but also continuously maintains the baseline stability of the axial trajectory through spring tension. There are three guide frames 200.
[0036] The statically determinate support system constructed by the three sets of guide frames 200 forms a closed force flow ring under the prestressing clamping of the annular spring 300, giving the device a ball joint-like self-aligning characteristic under external force disturbance; while the viscoelastic deformation characteristics of the rubber pad further transform the sudden load into a continuously decaying damped oscillation, ultimately maintaining the axial orientation capability during the transient impact stage when the drill bit 620 cuts into the insulation layer. Its comprehensive effect is that it effectively eliminates the random tilting error caused by manual operation, and endows the device with topological adaptive characteristics for curved walls and loose insulation substrates, thereby upgrading the traditional open drilling operation that relies on technician experience to a standardized and controlled process based on the intrinsic mechanical elasticity.
[0037] The roller structure includes two pulleys 230. The guide frame 200 includes a support frame 210 and two support rods 220. The two support rods 220 are arranged side by side at one end of the support frame 210. The other end of the support frame 210 is provided with a thickened pad. The sliding guide structure 500 is provided on the thickened pad. Each inner end of the support rod 220 is provided with a corresponding pulley 230. The pulley 230 slides in cooperation with the guide groove 120. The outer end face of the support frame 210 is provided with two grooves that can cooperate with the annular spring 300.
[0038] The sliding guide structure 500 includes a slide rod, a stop block, and a rubber pad. The slide rod passes through the thickened pad and the rubber pad and is threadedly connected to the mounting structure 400. The stop block is located at the outer end of the slide rod, and the rubber pad is located between the thickened pad and the mounting structure 400. The rubber pad and the threaded engagement of the slide rod in the sliding guide structure 500 form a composite buffer interface. The rigid connection between the slide rod and the thread establishes a precise guiding reference for axial displacement. The viscoelastic interlayer formed by the rubber pad between the stop block and the mounting structure 400 cleverly converts the off-center load torque caused by operator force fluctuations or micro-undulations of the wall surface into heat dissipation due to intramolecular friction. This not only does not hinder necessary micro-tilt adjustments but also continuously corrects and returns to the axis through the elastic memory effect.
[0039] The mounting structure 400 includes a mounting sleeve and an annular mounting plate. The inner side of the annular mounting plate is integrally connected to the end of the mounting sleeve. An adsorption assembly is provided on the outer end face of the annular mounting plate. The mounting sleeve is threadedly connected to the slide rod of the sliding guide structure 500. The adsorption assembly consists of multiple vacuum suction cups 410, which are evenly distributed on the outer end face of the annular mounting plate.
[0040] How this example works
[0041] Step 1: Connect the output end of the drive motor to the drive rod 610 via the directional shaft, and hinge the other end of the drive rod 610 to the drive sleeve via the pin shaft 621; embed the tail of the drill bit 620 into the drive sleeve and lock it to form a rotary cutting unit; insert the assembly unit into the inner sleeve 100 so that the flared sleeve and the drive sleeve rotate and engage; symmetrically install the two handheld brackets 110 on both sides of the thickened sleeve with bolts to complete the integration of the handheld operation module.
[0042] Step 2: Embed the pulleys 230 of the three guide frames 200 into the guide grooves 120 of the outer sleeve 100, ensuring that each support rod 220 rolls in contact with the groove; fit the two annular springs 300 onto the outside of the three sets of guide frames 200, apply pretension to make the springs evenly tighten the guide frames 200; connect the thickened pad of the guide frame 200 to the mounting sleeve through the sliding rod, during which a rubber pad is pressed between the pad and the annular mounting plate, and tighten the stop block to make the rubber pad produce initial compression deformation.
[0043] Step 3: Clean the surface of the insulation layer to be tested, press the ring mounting plate to make the vacuum suction cup 410 adhere to the wall; start the vacuum pump to draw in pressure ≤-80kPa (or remove the protective film of the quick-curing adhesive layer); observe the level, gently tap the mounting sleeve to fine-tune the angle until the adsorption component is in full contact with the wall.
[0044] Step 4: Hold the support with both hands and start the drive motor at low speed to rotate the drill bit 620; advance the hand support 110 forward at a constant speed, and slide the outer sleeve 100 along the roller of the guide frame 200. At this time, the ring spring 300 cancels the fluctuation of the operating thrust through elastic contraction; after the drill bit 620 cuts into the insulation layer, the rubber pad absorbs the vibration energy, and the slide rod maintains the axial feed trajectory under the threaded guidance; when the flared sleeve contacts the surface of the insulation layer, stop feeding and maintain rotation for 5 seconds to obtain a complete core sample.
[0045] Step 5: Turn off the drive motor, slowly pull back the handheld bracket 110, and the drive rod 610 will drive the drill bit 620 out of the hole; use the core sample ejector rod to push out the residual core sample through the outer sleeve 100; turn off the vacuum pump to release the suction cup (or heat to 80℃ to soften the adhesive layer), disassemble the device and proceed to the next measurement point.
[0046] The above are merely preferred embodiments of the present utility model and are 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 shall be included within the protection scope of the present utility model.
Claims
1. A drilling device for detecting thermal insulation layers, characterized in that: It includes a drive motor, a drive rod (610), a drill bit (620), an outer sleeve (100), a drive sleeve, an elastic guide mechanism, a mounting structure (400), and two hand-held supports (110); The drive sleeve is provided at the tail of the drill bit (620), one end of the drive rod (610) is connected to the drive sleeve through a pin (621), and the other end of the drive rod (610) is provided with a direction shaft, which is connected to the output end of the drive motor. The drive rod (610) is located at the axial position inside the outer sleeve (100). One end of the outer sleeve (100) is provided with a flared sleeve, which is rotatably engaged with the drive sleeve. The other end of the outer sleeve (100) is provided with a thickened sleeve. Two handheld brackets (110) are symmetrically arranged on both sides of the thickened sleeve. Each handheld bracket (110) is detachably connected to the thickened sleeve. One end of the elastic guide mechanism is slidably engaged with the outer sleeve (100), and the other end of the elastic guide mechanism is connected to the mounting structure (400). The mounting structure (400) is provided with an adsorption component, which is used to adsorb the wall surface.
2. The drilling device for detecting thermal insulation layers according to claim 1, characterized in that: The elastic guiding mechanism includes two annular springs (300), multiple guide frames (200), multiple roller structures, and multiple sliding guide structures (500). The multiple guide frames (200) are evenly arranged circumferentially outside the outer sleeve (100). The outer wall of the outer sleeve (100) is evenly arranged with multiple guide grooves (120). One end of each guide frame (200) is slidably engaged with a guide groove (120) through a roller structure. The other end of each guide frame (200) is connected to the mounting structure (400) through a sliding guide structure (500). The two annular springs (300) are both sleeved on the outside of the multiple guide frames (200).
3. The drilling device for detecting thermal insulation layers according to claim 2, characterized in that: The roller structure includes two pulleys (230), the guide frame (200) includes a support frame (210) and two support rods (220), the two support rods (220) are arranged side by side at one end of the support frame (210), the other end of the support frame (210) is provided with a thickened pad, the sliding guide structure (500) is provided on the thickened pad, each support rod (220) is provided with a pulley (230) corresponding to its inner end, the pulley (230) is slidably engaged with the guide groove (120), and the outer end face of the support frame (210) is provided with two grooves that can engage with the annular spring (300).
4. The drilling device for detecting thermal insulation layers according to claim 3, characterized in that: The sliding guide structure (500) includes a slide rod, a stop block and a rubber pad. The slide rod passes through the thickened pad block and the rubber pad and is threadedly connected to the mounting structure (400). The stop block is located at the outer end of the slide rod, and the rubber pad is located between the thickened pad block and the mounting structure (400).
5. A drilling device for detecting thermal insulation layers according to any one of claims 2-4, characterized in that: The mounting structure (400) includes a mounting sleeve and an annular mounting plate. The inner side of the annular mounting plate is integrally connected to the end of the mounting sleeve. The adsorption component is provided on the outer end face of the annular mounting plate. The mounting sleeve is threadedly connected to the slide rod of the sliding guide structure (500).
6. A drilling device for detecting thermal insulation layers according to claim 5, characterized in that: The adsorption assembly consists of multiple vacuum suction cups (410), which are evenly distributed on the outer end face of the annular mounting plate.
7. A drilling device for detecting thermal insulation layers according to claim 5, characterized in that: The adsorption component is a fast-curing adhesive layer.
8. A drilling device for detecting thermal insulation layers according to claim 5, characterized in that: The number of guide frames (200) is 3.