Asphalt pavement drilling and sampling protection device

Abstract

This utility model belongs to the field of road drilling and core sampling technology, specifically providing a protective device for asphalt pavement drilling and sampling. It includes a water-blocking base, a filter screen, a water pump, and pressure plates. The water-blocking base confines water within its own clearance hole. The filter screen is located inside the clearance hole, and the water pump is situated in a water storage chamber between the filter screen and the clearance hole. The filter screen prevents large stones from entering the water storage chamber, thus preventing blockage of the water pump or water pipe. Two pressure plates are positioned opposite each other on both sides of the water-blocking base. These pressure plates apply downward pressure, ensuring the support is tightly fitted to the road surface and preventing water from flowing through the support to the outside. This application uses the water-blocking base to contain wastewater generated during the drilling and core sampling process within the clearance hole. The water pump and water pipe promptly remove any overflowing water and transfer it to a container. The pressure plates apply downward pressure to the water-blocking base, ensuring the support is tightly fitted to the road surface, improving the sealing of the support and helping to prevent wastewater from flowing out from the gap between the support and the road surface.

Description

Technical Field

[0001] This application belongs to the field of road drilling and coring technology, specifically a protective device for drilling and sampling of asphalt pavement. Background Technology

[0002] After the asphalt pavement is laid, it needs to be drilled and sampled. The samples are then measured to determine whether the thickness and compaction of the pavement are up to standard. The equipment used for pavement drilling and sampling is a core drill, which relies on a motor to drive the drill barrel to rotate at high speed, cutting a cylindrical core from the pavement.

[0003] To prevent the drill barrel from overheating, the coring machine requires cooling water during operation. This cooling water carries asphalt particles, mud, and other impurities that overflow from the borehole and onto the road surface. While the overflowing water evaporates and seeps in, the mud adheres to the newly paved surface, affecting its appearance and hindering subsequent road markings (such as pedestrian crossings, lane markings, and parking lines). The conventional approach is to use a water truck to clean up the mud after sampling. However, since the mud accumulation area is relatively small compared to the entire road surface, deploying a water truck alone is labor-intensive and energy-intensive. Utility Model Content

[0004] Based on the above-mentioned technical problems, this application provides an asphalt pavement drilling sampling protection device to solve the technical problem of mud overflow during drilling causing pavement dirt in the prior art.

[0005] To achieve the above objectives, the technical solution adopted in this application is: to provide a protective device for drilling and sampling of asphalt pavement, comprising: A water-blocking base includes a water-blocking part and a supporting part. The water-blocking part has a vertically penetrating clearance hole for a drill barrel to pass through. The supporting part surrounds the bottom of the water-blocking part and is used to fit against the road surface. A filter screen, in the shape of a ring, is fixedly disposed inside the clearance hole, and a water storage cavity is formed between the filter screen and the inner wall of the clearance hole; A water pump is disposed on the outer wall of the water-blocking part, and the water inlet end of the water pump is connected to a water pumping pipe, which extends into the water storage chamber; and Two pressure plates are disposed opposite each other on both sides of the water-blocking base. One end of the pressure plate is connected to the support part, and the other end extends outward along the radial direction of the water-blocking base.

[0006] In one possible implementation, the filter screen is tapered in shape with a cross-section that gradually increases from top to bottom.

[0007] In one possible implementation, the lower surface of the support portion is provided with a sealing groove around the clearance hole, and a rubber sealing ring is provided in the sealing groove.

[0008] In one possible implementation, multiple sealing grooves are spaced apart from the inside out, and the multiple sealing grooves are coaxially arranged, with each sealing groove containing a rubber sealing ring.

[0009] In one possible implementation, the bottom surface of the support portion is further provided with a felt layer between two adjacent rubber sealing rings.

[0010] In one possible implementation, the water pump is a flexible hose.

[0011] In one possible implementation, the inlet end of the water pump is provided with filter cotton.

[0012] In one possible implementation, the pressure plate is provided with a guide post, which is arranged vertically and has an external thread at its upper end. The threaded section of the guide post is threadedly engaged with a fixing nut, and a clamping space is formed between the fixing nut and the pressure plate.

[0013] In one possible implementation, the asphalt pavement drilling sampling protection device further includes a water storage tank, the outlet of the water pump is connected to the water storage tank, and the water storage tank has a drain outlet.

[0014] In one possible implementation, the water pump is detachably mounted on the outer wall of the water-blocking part.

[0015] Compared with the prior art, the beneficial effects of the asphalt pavement drilling sampling protection device provided in this application are: The asphalt pavement drilling sampling protection device provided in this application includes a water-retaining base, a filter screen, a water pump, and pressure plates. The water-retaining base is used to confine water within its own clearance hole. The filter screen is installed inside the clearance hole, and the water pump is located in the water storage chamber between the filter screen and the clearance hole. The filter screen can prevent large particles of stone from entering the water storage chamber and prevent the water pump or water pipe from becoming clogged. Two pressure plates are positioned opposite each other on both sides of the water-retaining base. The pressure plates can apply downward pressure to keep the support tightly against the road surface, preventing water from flowing through the support to the outside.

[0016] This application uses a water-blocking base to block the sewage generated during the operation of the core drilling machine within the clearance hole. A water pump and a water pipe are used to promptly pump away the overflowing water and transfer it to a container. A pressure plate applies downward pressure to the water-blocking base, making the support tightly fit against the road surface, improving the sealing of the support and helping to prevent sewage from flowing out from the gap between the support and the road surface. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the use of the asphalt pavement drilling sampling protection device provided in the embodiments of this application. Figure 1 ; Figure 2 A schematic diagram of the use of the asphalt pavement drilling sampling protection device provided in the embodiments of this application. Figure 2 ; Figure 3 Schematic diagram of the structure of the asphalt pavement drilling sampling protection device provided in the embodiments of this application. Figure 1 ; Figure 4 Schematic diagram of the structure of the asphalt pavement drilling sampling protection device provided in the embodiments of this application. Figure 2 ; Explanation of reference numerals in the attached figures: 10. Water-blocking base; 11. Water-blocking part; 12. Support part; 121. Rubber sealing ring; 20. Filter screen; 30. Water pump; 31. Water pumping pipe; 40. Pressure plate; 41. Guide column; 42. Fixing nut; 50. Water storage tank; 51. Handle; 60. Core drilling machine; 61. Drill barrel; 62. Support base frame; 63. Tightening bolt. Detailed Implementation

[0019] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0020] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0021] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "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 this application 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 this application.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" or "several" means two or more, unless otherwise explicitly specified.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0024] Please refer to the following: Figures 1 to 4 The following describes the asphalt pavement drilling and sampling protection device provided in the embodiments of this application.

[0025] Please see Figures 1 to 4 This application provides an asphalt pavement drilling and sampling protection device, including a water-blocking base 10, a filter screen 20, a water pump 30, and pressure plates 40. The water-blocking base 10 includes a water-blocking part 11 and a supporting part 12. The water-blocking part 11 has a vertically penetrating clearance hole for the drill barrel 61 to pass through. The supporting part 12 surrounds the bottom of the water-blocking part 11 and is used to fit against the road surface. The filter screen 20 is annular and fixedly disposed inside the clearance hole, forming a water storage cavity between the filter screen 20 and the inner wall of the clearance hole. The water pump 30 is disposed on the outer wall of the water-blocking part 11, and the water inlet end of the water pump 30 is connected to a water pump pipe 31, which extends into the water storage cavity. Two pressure plates 40 are disposed opposite each other on both sides of the water-blocking base 10. One end of the pressure plate 40 is connected to the supporting part 12, and the other end extends outward along the radial direction of the water-blocking base 10.

[0026] Compared with the prior art, the beneficial effects of the asphalt pavement drilling sampling protection device provided in this application embodiment are: The asphalt pavement drilling and sampling protection device provided in this application includes a water-retaining base 10, a filter screen 20, a water pump 30, and pressure plates 40. The water-retaining base 10 is used to confine water within its own clearance hole. The filter screen 20 is disposed inside the clearance hole, and the water pump 31 is located in the water storage cavity between the filter screen 20 and the clearance hole. The filter screen 20 can prevent large stones from entering the water storage cavity and prevent the water pump 31 or the water pump 30 from becoming clogged. Two pressure plates 40 are disposed opposite each other on both sides of the water-retaining base 10. The pressure plates 40 can apply downward pressure to make the support part 12 fit tightly against the road surface, preventing water from flowing to the outside through the support part 12.

[0027] In this embodiment, the wastewater generated by the core drilling machine 60 during operation is blocked in the clearance hole by the water-blocking base 10. The overflowing water is promptly pumped away and transferred to a container by the water pump 30 and the water pipe 31. The pressure plate 40 applies downward pressure to the water-blocking base 10, so that the support part 12 is tightly attached to the road surface, improving the sealing performance of the support part 12 and helping to prevent wastewater from flowing out from the gap between the support part 12 and the road surface.

[0028] Please see Figure 1 and Figure 2 The asphalt pavement drilling and sampling protection device provided in this application embodiment is used in conjunction with the existing core drilling machine 60. The core drilling machine 60 includes a support frame, a support base 62, moving wheels, a drill barrel 61, a cooling mechanism, a lifting mechanism, and a drive mechanism. The support frame and support base 62 are made of welded steel. Moving wheels can be installed under the support base 62 to facilitate the movement of the core drilling machine 60. The drive mechanism is a motor that can drive the drill barrel 61 to rotate at high speed. While the drill barrel 61 is rotating, the lifting mechanism drives the drill barrel 61 to descend, causing the drill barrel 61 to rotate downwards and cut the road surface. After cutting, a cylindrical sample can be obtained. During the operation of the drill barrel 61, in order to prevent the drill barrel 61 from overheating, cooling water is supplied to the drill barrel 61 through a cooling water pipe. The cooling water enters the borehole and overflows from the borehole onto the road surface along with the mud, gravel, etc. produced during drilling.

[0029] The water-blocking base 10 is circular or square in shape. The water-blocking base 10 has a clearance hole inside, and a filter screen 20 is installed inside the clearance hole. The diameter of both the filter screen 20 and the clearance hole is larger than the outer diameter of the drill barrel 61 so that the drill barrel 61 can pass through smoothly.

[0030] The water-blocking base 10 includes a water-blocking part 11 and a support part 12. The water-blocking part 11 and the support part 12 can be integrally formed and connected, or they can be connected by fasteners such as bolts. The water-blocking part 11 and the support part 12 can be made of metal (such as cast iron or stainless steel) or non-metal (such as engineering plastic), as long as it meets the usage requirements.

[0031] The filter screen 20 is a rigid filter screen 20, and the material of the filter screen 20 can be stainless steel or other materials that are not easily deformed. The filter screen 20 has multiple filter holes densely distributed on it for water to pass through. The filter screen 20 can be cylindrical or conical with a cross-section that gradually increases from top to bottom. The filter screen 20 can be set with one or more layers as needed. When the filter screen 20 is set with multiple layers, the diameter of the filter screen 20 increases from the inside to the outside.

[0032] There are no specific restrictions on the pore size and arrangement of the filter holes on the filter screen 20. Users can choose and set them according to their needs, as long as it can prevent impurities that may clog the water pump 30 from entering the water storage chamber.

[0033] The water pump 30 is used to remove water from the water storage chamber. The water pump 30 can be any commercially available pump, and its specific specifications and model are not limited. The water pump 30 is installed on the outside of the water-blocking part 11 using bolts or other fasteners and can be powered by an external power source such as a battery. The water inlet end of the water pump 30 is connected to a water suction pipe 31, which extends into the water storage chamber. The water suction pipe 31 can be a rigid metal pipe or a flexible plastic hose.

[0034] The water pump 30 can be detachably mounted on the outer wall of the water baffle 11 by screws, making it easy to replace if damaged.

[0035] To ensure the water-retaining base 10 adheres better to the asphalt pavement, this embodiment of the application provides pressure plates 40 on both sides of the water-retaining base 10. One end of the pressure plate 40 is connected to the support portion 12 of the water-retaining base 10, and the other end extends away from the water-retaining base 10. Downward pressure can be applied to the pressure plate 40 to make the support portion 12 adhere tightly to the pavement.

[0036] Optionally, a heavy object (such as a brick) can be placed on the pressure plate 40 to generate downward pressure during use. Alternatively, the core drill 60 can be moved onto the pressure plate 40, and its own weight can be used to apply downward pressure to the pressure plate 40. Alternatively, a tightening bolt 63 can be installed on the support frame 62 of the core drill 60. The tightening bolt 63 is threaded into the support frame 62, with the pressure plate 40 located below the support frame 62. The lower end of the tightening bolt 63 presses against the pressure plate 40, and downward pressure is applied to the pressure plate 40 by rotating the tightening bolt 63.

[0037] The pressure plate 40 and the support part 12 can be connected as a whole by welding or by screws.

[0038] Please see Figure 2 and Figure 4In some possible embodiments, the support portion 12 is used to fit against the asphalt pavement. The lower surface of the support portion 12 is provided with a sealing groove around the clearance hole, and a rubber sealing ring 121 is provided in the sealing groove. The number of sealing grooves can be one or more. When there are multiple sealing grooves, the multiple sealing grooves are arranged at intervals from the inside to the outside, and the multiple sealing grooves are coaxial with each other. Each sealing groove is provided with a rubber sealing ring 121 that matches its diameter.

[0039] Considering that even newly paved asphalt pavement has a relatively rough surface and sewage may still leak out from the gaps, in order to improve the sealing between the support part 12 and the road surface, a felt layer is provided on the bottom surface of the support part 12 between two adjacent rubber sealing rings 121. The felt layer has water absorption properties and can absorb a small amount of water that has overflowed.

[0040] The felt layer can be fixed to the bottom surface of the support part 12 by means of Velcro, glue, riveting, etc. After the felt layer absorbs water, it needs to be dried to allow the moisture to evaporate. When the felt layer is worn out, it can be removed and replaced with a new felt layer.

[0041] Since the road surface may be sloping, if the pumping position of the water pipe 31 is fixed, incomplete pumping may occur during actual use. To resolve this issue, please refer to... Figure 2 and Figure 3 The water inlet pipe 31 is a rubber hose that can be moved and adjusted to keep the water inlet end of the water inlet pipe 31 at the lowest point.

[0042] In addition, after drilling is completed and the sample is taken out, sewage will remain inside the borehole. At this time, the water pumping pipe 31 can be inserted into the borehole to pump out the water, which will facilitate subsequent filling and repair of the borehole.

[0043] To prevent the water pumping pipe 31 from becoming clogged when pumping water from the borehole, water should be pumped only after most of the impurities have settled to the bottom of the borehole. Additionally, a filter cotton can be installed at the inlet of the water pumping pipe 31. The filter cotton can filter out large particles of impurities; it can be removed and replaced if clogged.

[0044] To allow the filter cotton to be installed at the end of the flexible rubber hose, a metal tube can be glued to the end of the rubber hose. The metal tube has a gasket inside. The filter cotton is then inserted into the metal tube, and the gasket prevents the filter cotton from being sucked into the water pipe 31. If the water flow decreases, it indicates that the filter cotton is clogged; simply remove the old filter cotton and replace it with a new one.

[0045] Please see Figure 1 and Figure 3In some possible embodiments, the pressure plate 40 is provided with a guide post 41. The guide post 41 is arranged vertically and has an external thread at its upper end. The threaded section of the guide post 41 is threadedly engaged with a fixing nut 42. A clamping space is formed between the fixing nut 42 and the pressure plate 40. The guide post 41 passes through the support base 62 of the core drilling machine 60 and the pressure plate 40 is fixed to the support base 62 by the fixing nut 42. This allows the protective device provided in this embodiment to be connected to the support base 62 as a whole, which is convenient for movement.

[0046] After moving to the drilling position, loosen the fixing nut 42. The pressure plate 40 and the water-blocking base 10 fall to the road surface under the action of gravity. Rotate the tightening bolt 63 to apply downward pressure to the pressure plate 40, so that the water-blocking base 10 is further pressed against the road surface under the action of pressure.

[0047] For easier collection of the extracted wastewater, please refer to [link / reference]. Figures 1 to 4 In some possible embodiments, the asphalt pavement drilling sampling protection device also includes a water storage tank 50, with the outlet of the water pump 30 connected to the water storage tank 50. The water storage tank 50 has a drain outlet and a handle 51. The water storage tank 50, as a container, can be made of metal or plastic and is sufficient to store a certain amount of water. After pumping is completed, the water is discharged to a suitable location through the drain outlet.

[0048] It is understood that the parts in the above embodiments can be freely combined or deleted to form different combined embodiments. The specific contents of each combined embodiment will not be repeated here. After this description, it can be considered that the present utility model specification has recorded each combined embodiment and can support different combined embodiments.

[0049] 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 and improvements 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 bituminous pavement core sampling protection device, characterised in that, include: The water-blocking base (10) includes a water-blocking part (11) and a support part (12). The water-blocking part (11) has a vertically penetrating clearance hole for the drill barrel (61) to pass through. The support part (12) surrounds the bottom of the water-blocking part (11) and is used to fit against the road surface. The filter screen (20) is ring-shaped and fixed inside the clearance hole, and a water storage cavity is formed between the filter screen (20) and the inner wall of the clearance hole; A water pump (30) is disposed on the outer wall of the water-blocking part (11), and the water inlet end of the water pump (30) is connected to a water pump pipe (31), which extends into the water storage chamber; and Two pressure plates (40) are disposed opposite each other on both sides of the water-blocking base (10). One end of the pressure plate (40) is connected to the support part (12), and the other end extends outward along the radial direction of the water-blocking base (10).

2. The asphalt pavement core sampling shield of claim 1, wherein, The filter screen (20) is a cone shape with a cross-section that gradually increases from top to bottom.

3. The asphalt pavement core sampling shield of claim 1, wherein, The lower surface of the support (12) is provided with a sealing groove around the clearance hole, and a rubber sealing ring (121) is provided in the sealing groove.

4. The asphalt pavement core sampling shield of claim 3, wherein, The sealing grooves are spaced out from the inside out, and the multiple sealing grooves are coaxially arranged. Each sealing groove is provided with a rubber sealing ring (121).

5. The asphalt pavement core sampling shield of claim 4, wherein, The bottom surface of the support (12) is further provided with a felt layer between two adjacent rubber sealing rings (121).

6. The asphalt pavement drilling and sampling protection device according to claim 1, characterized in that, The water pumping pipe (31) is a flexible hose.

7. The asphalt pavement core sampling shield of claim 6, wherein, The inlet end of the pumping pipe (31) is equipped with filter cotton.

8. The asphalt pavement core sampling shield of claim 1, wherein, The pressure plate (40) is provided with a guide post (41), the guide post (41) is arranged vertically and has an external thread at the upper end, and the threaded section of the guide post (41) is threadedly fitted with a fixing nut (42), and a clamping space is formed between the fixing nut (42) and the pressure plate (40).

9. The asphalt pavement core sampling shield of claim 1, wherein, The asphalt pavement drilling and sampling protection device also includes a water storage tank (50), the outlet of the water pump (30) is connected to the water storage tank (50), and the water storage tank (50) has a drain outlet.

10. The asphalt pavement core sampling shield of claim 1, wherein, The water pump (30) is detachably mounted on the outer wall of the water-blocking part (11).

Images