Pavement core sample extraction device

Abstract

The utility model discloses a road surface core sample extraction device, which relates to the technical field of road monitoring devices and comprises a cart device, an engine is fixedly mounted on the cart device, and a lifting component is arranged between the engine and the cart device. Through the arrangement of the machine shell, the water pump, the drill bit assembly and the first connector, after an operator moves the cart device to a preset coring position, the lifting plate is controlled to ascend and descend through the lifting assembly, then the engine drives the drill bit assembly to rotate, and when a core sample is extracted, the water pump is started and pumps cooling water from an external water tank; cooling water is pumped into the machine shell through the water outlet pipe and finally pressed into the hollow first connector at the top end of the drill bit assembly, then the cooling water is led into the drill bit assembly, an internal cooling flow channel is formed, and a large amount of heat generated by severe friction between a drill bit and a hard road surface is directly and rapidly absorbed and taken away. And the water flow also plays a role in dust catching and coagulation, so that dust particles are effectively wrapped and wetted.

Description

Technical Field

[0001] This utility model relates to the field of highway monitoring device technology, and in particular to a road surface core sample extraction device. Background Technology

[0002] In the early stages of the development of road engineering testing technology, the acquisition of pavement core samples mainly relied on traditional drilling rigs operated manually. These devices were not only bulky, but the sampling process also heavily depended on the operator's experience and physical strength, resulting in generally low sampling efficiency and difficulty in effectively guaranteeing the consistency of core sample quality. As engineering practice has continuously increased its requirements for testing accuracy and efficiency, the mechanization and automation of pavement core sample extraction technology has become an inevitable trend. Subsequently, drilling equipment mounted on mobile platforms began to appear, significantly improving the convenience of work and adaptability to different sites.

[0003] A search revealed a utility model patent with authorization announcement number CN220927788U, a road surface core sample extraction device, belonging to the technical field of highway monitoring devices. This device includes a fixing member with two clamping members symmetrically hinged on both sides. The two clamping members are used to fit around the periphery of the core sample. A vertically arranged operating rod is fixedly connected to the middle of the fixing member. A limiting structure is movably connected to the operating rod at the end of the clamping members away from the core sample. The limiting structure moves along the operating rod towards the end closer to the fixing member, pushing the tops of the two clamping members away from the operating rod. The pushed clamping members rotate around the hinged position, and the bottom end of the clamping members clamps the core sample and maintains the clamped state until the core sample is removed.

[0004] However, for road surface coring rather than soil coring, the drill bit needs to deal with hard road conditions. The drill bit will heat up rapidly when rotating at high speed. If cooling measures are not taken in time, the drill bit will become less hard due to overheating, which will affect the drilling efficiency and may even damage the drill bit and shorten its service life. In addition, the dust generated during drilling will affect the respiratory health of nearby workers. In view of this, this application proposes a road surface core sample extraction device based on the above technical problems. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a road surface core sample extraction device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A road surface core sample extraction device includes a trolley device, an engine fixedly mounted on the trolley device, a lifting assembly disposed between the engine and the trolley device, a lifting plate movably mounted on the lifting assembly, a fixed plate fixedly mounted on one side of the lifting plate, a housing fixedly mounted on one side of the fixed plate, a drill bit assembly rotatably connected to the bottom of the housing, and the engine driving the drill bit assembly to rotate.

[0008] The drill bit assembly includes a first connector that is hollow inside;

[0009] A water pump is fixedly installed on the top of the casing. A suction pipe is fixedly installed at the water pump inlet, and the suction pipe leads to an external water tank. An outlet pipe is fixedly installed at the water pump outlet, and one end of the outlet pipe is connected to the casing and leads to the inside of the first connector.

[0010] Furthermore, the drill bit assembly includes a second connector, a drill barrel, and a drill bit body. The bottom of the first connector is provided with a first external thread, and the top of the second connector is provided with a first internal thread that matches the first external thread. The upper and lower ends of the drill barrel are respectively provided with second external threads, and the bottom of the second connector and the top of the drill bit body are both provided with second internal threads that match the second external threads.

[0011] Furthermore, the drill barrel is composed of two symmetrical half-cylinders, with the upper and lower ends of the half-cylinders serving as interface sections, and the middle part of the half-cylinder serving as a core-taking section, the core-taking section having a wall thickness greater than that of the interface section.

[0012] Furthermore, the trolley device includes a base plate, on the bottom of which are fixedly mounted casters, on the upper surface of which are fixedly mounted support rods, on which are fixedly mounted handles, and on one end of which are fixedly mounted crossbeams.

[0013] Furthermore, the lifting assembly includes a lead screw rotatably mounted on the crossbeam, the lead screw being threadedly connected to the lifting plate, and a handwheel fixedly mounted at one end of the lead screw.

[0014] Furthermore, a column is fixedly installed between the crossbeam and the base plate, and a guide block is slidably installed on the column, the guide block being fixedly connected to the lifting plate.

[0015] Furthermore, a drive wheel is fixedly installed at the output end of the engine, and a driven wheel is fixedly installed on the outside of the first connector. A belt drives the driven wheel and the drive wheel.

[0016] Furthermore, a support plate is fixedly installed on one side of the lifting plate, the support plate is fixedly connected to the engine, and a cover is fixedly installed at the bottom of the engine housing.

[0017] The beneficial effects of this utility model are as follows:

[0018] 1. This utility model, by setting up a housing, a water pump, a drill bit assembly, and a first connector, allows the operator to move the trolley device to the predetermined core extraction position. The lifting assembly controls the lifting plate to rise and fall, and then the engine drives the drill bit assembly to rotate. When extracting the core sample, the water pump starts, drawing cooling water from the external water tank and pumping it into the housing through the outlet pipe. Finally, the water is pressed into the hollow first connector at the top of the drill bit assembly. The cooling water then flows into the drill bit assembly, forming an internal cooling channel that directly and quickly absorbs and carries away the large amount of heat generated by the intense friction between the drill bit and the hard road surface. The water flow also plays a role in dust capture and coagulation, effectively encapsulating and wetting dust particles, increasing their weight and preventing them from dispersing into the air.

[0019] 2. This utility model, by setting up a drill bit assembly, allows the operator to reverse the handwheel after core sampling and lift the drill bit assembly out of the road surface using the lifting assembly. Since the drill barrel adopts a design of two symmetrical half-cylinders, it can be easily separated after removal, thus allowing for the extraction of a complete road surface core sample without damage. The bottom of the first connector is connected to the top of the second connector via a first external thread, and the bottom of the second connector and the top of the drill bit body are respectively connected to the upper and lower ends of the drill barrel via second internal threads, making the drill bit assembly modularly disassembled and replaced. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a road surface core sample extraction device proposed in this utility model.

[0021] Figure 2 This utility model proposes a road surface core sample extraction device. Figure 1 Enlarged view of a portion of point A in the middle;

[0022] Figure 3 This is a schematic diagram of the lifting assembly of a road surface core sample extraction device proposed in this utility model;

[0023] Figure 4 This is an exploded view of the drill bit assembly of a road surface core sample extraction device proposed in this utility model;

[0024] Figure 5 This is a schematic diagram of a half-cylinder of a road surface core sample extraction device proposed in this utility model;

[0025] Figure 6 This is a schematic diagram of the lifting plate of a road surface core sample extraction device proposed in this utility model.

[0026] In the diagram: 1. Pushcart device; 2. Engine; 3. Lifting plate; 4. Fixing plate; 5. Machine housing; 6. First connector; 7. Water pump; 8. Suction pipe; 9. Discharge pipe; 10. Second connector; 11. Drill barrel; 12. Drill bit body; 13. First external thread; 14. Second external thread; 15. Half-cylinder; 16. Interface section; 17. Core taking section; 18. Base plate; 19. Casters; 20. Support rod; 21. Handle; 22. Crossbeam; 23. Lead screw; 24. Handwheel; 25. Column; 26. Guide block; 27. Drive wheel; 28. Driven wheel; 29. ​​Belt; 30. Support plate; 31. Machine cover. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Reference Figure 1-3 A road surface core sample extraction device includes a trolley device 1, an engine 2 fixedly mounted on the trolley device 1, a lifting assembly between the engine 2 and the trolley device 1, a lifting plate 3 movably mounted on the lifting assembly, a fixing plate 4 fixedly mounted on one side of the lifting plate 3, a housing 5 fixedly mounted on one side of the fixing plate 4, a drill bit assembly rotatably connected to the bottom of the housing 5, and the engine 2 used to drive the drill bit assembly to rotate.

[0029] The drill bit assembly includes a first connector 6 that is hollow inside;

[0030] A water pump 7 is fixedly installed on the top of the housing 5. A suction pipe 8 is fixedly installed at the inlet of the water pump 7, and the suction pipe 8 leads to an external water tank. An outlet pipe 9 is fixedly installed at the outlet of the water pump 7, and one end of the outlet pipe 9 is connected to the housing 5 and leads to the inside of the first connector 6.

[0031] After the operator moves the trolley device 1 to the predetermined core sampling position, the lifting plate 3 is raised and lowered by the lifting assembly. Then, the engine 2 drives the drill bit assembly to rotate. When the core sample is extracted, the water pump 7 starts. The water pump 7 draws cooling water from the external water tank and pumps it into the machine housing 5 through the water outlet pipe 9. Finally, it is pressed into the hollow first connector 6 at the top of the drill bit assembly. The cooling water then flows into the inside of the drill bit assembly, forming an internal cooling channel. This channel directly and quickly absorbs and carries away the large amount of heat generated by the intense friction between the drill bit and the hard road surface. The water flow also plays a role in dust capture and coagulation, effectively wrapping and wetting the dust particles, increasing their weight and preventing them from dispersing into the air.

[0032] Reference Figure 1 , Figure 4Specifically, the drill bit assembly includes a second connector 10, a drill barrel 11, and a drill bit body 12. The bottom of the first connector 10 is provided with a first external thread 13, and the top of the second connector 10 is provided with a first internal thread that matches the first external thread 13. The upper and lower ends of the drill barrel 11 are respectively provided with second external threads 14. The bottom of the second connector 10 and the top of the drill bit body 12 are both provided with second internal threads that match the second external threads 14, so that the drill bit assembly can be modularly disassembled and replaced.

[0033] Reference Figure 4-5 Specifically: the drill barrel 11 is composed of two symmetrical half-cylinders 15, the upper and lower ends of the half-cylinders 15 are set as interface parts 16, the middle part of the half-cylinders 15 is set as core taking part 17, and the wall thickness of the core taking part 17 is greater than that of the interface parts 16.

[0034] Reference Figure 1 Specifically: the trolley device 1 includes a base plate 18, with casters 19 fixedly installed at the bottom of the base plate 18, a support rod 20 fixedly installed on the upper surface of the base plate 18, a handle 21 fixedly installed on the support rod 20, and a crossbeam 22 fixedly installed at one end of the support rod 20.

[0035] Reference Figure 1 , Figure 3 Specifically: the lifting assembly includes a lead screw 23 rotatably mounted on the crossbeam 22, the lead screw 23 being threadedly connected to the lifting plate 3, and a handwheel 24 being fixedly mounted on one end of the lead screw 23;

[0036] Turning the handwheel 24 drives the lead screw 23 to rotate, which in turn converts the rotational motion into the smooth downward movement of the lifting plate 3 through the threaded transmission. This, in turn, drives the entire engine 2 and drill bit assembly to feed downward. At this time, the engine 2 starts and transmits power to the drill bit assembly through the belt 29, driving the drill barrel 11 and the drill bit body 12 to start rotating at high speed, ready to cut into the road surface. The core sample is stored inside the drill barrel 11 as the lifting plate 3 descends.

[0037] After core sampling is completed, the operator reverses the handwheel 24 and lifts the drill bit assembly out of the road surface using the lifting assembly. Since the drill cylinder 11 adopts the design of two symmetrical half-cylinders 15, it can be easily separated after being taken out, so as to extract the complete road surface core sample without damage.

[0038] Reference Figure 1 , Figure 6 Specifically: a column 25 is fixedly installed between the crossbeam 22 and the base plate 18, and a guide block 26 is slidably installed on the column 25. The guide block 26 is fixedly connected to the lifting plate 3.

[0039] Reference Figure 1 , Figure 3Specifically: a drive wheel 27 is fixedly installed at the output end of the engine 2, a driven wheel 28 is fixedly installed on the outside of the first connector 6, and a belt 29 is connected between the driven wheel 28 and the drive wheel 27.

[0040] Reference Figure 1 , Figure 3 , Figure 6 Specifically: a support plate 30 is fixedly installed on one side of the lifting plate 3, the support plate 30 is fixedly connected to the engine 2, and a cover 31 is fixedly installed at the bottom of the housing 5.

[0041] Working principle: After the operator moves the trolley device 1 to the predetermined core sampling position, the lifting plate 3 is raised and lowered by the lifting component. Then the engine 2 drives the drill bit assembly to rotate. When the core sample is extracted, the water pump 7 starts. The water pump 7 draws cooling water from the external water tank and pumps it into the machine housing 5 through the water outlet pipe 9. Finally, it is pressed into the hollow first connector 6 at the top of the drill bit assembly. The cooling water then flows into the inside of the drill bit assembly, forming an internal cooling channel. It directly and quickly absorbs and carries away a large amount of heat generated by the intense friction between the drill bit and the hard road surface. The water flow also plays a role in dust capture and coagulation, effectively wrapping and wetting the dust particles, increasing their weight and preventing them from drifting into the air.

[0042] Turning the handwheel 24 drives the lead screw 23 to rotate, which in turn converts the rotational motion into the smooth downward movement of the lifting plate 3 through the threaded transmission. This, in turn, drives the entire engine 2 and drill bit assembly to feed downward. At this time, the engine 2 starts and transmits power to the drill bit assembly through the belt 29, driving the drill barrel 11 and the drill bit body 12 to start rotating at high speed, ready to cut into the road surface. The core sample is stored inside the drill barrel 11 as the lifting plate 3 descends.

[0043] After core sampling is completed, the operator reverses the handwheel 24 and lifts the drill bit assembly out of the road surface using the lifting assembly. Since the drill cylinder 11 adopts the design of two symmetrical half-cylinders 15, it can be easily separated after being taken out, so as to extract the complete road surface core sample without damage.

[0044] The bottom of the first connector 6 is connected to the top of the second connector 10 via the first external thread 13. The bottom of the second connector 10 and the top of the drill body 12 are respectively connected to the upper and lower ends of the drill barrel 11 via the second internal thread, so that the drill assembly can be modularly disassembled and replaced.

[0045] 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.

[0046] In the description of this application, it should be understood that the terms "center", "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.

Claims

1. A road surface core sample extraction device, characterized in that, The device includes a trolley device (1), on which an engine (2) is fixedly installed. A lifting assembly is provided between the engine (2) and the trolley device (1). A lifting plate (3) is movably installed on the lifting assembly. A fixing plate (4) is fixedly installed on one side of the lifting plate (3). A housing (5) is fixedly installed on one side of the fixing plate (4). A drill bit assembly is rotatably connected to the bottom of the housing (5). The engine (2) is used to drive the drill bit assembly to rotate. The drill bit assembly includes a first connector (6) that is hollow inside. A water pump (7) is fixedly installed on the top of the housing (5). A suction pipe (8) is fixedly installed at the inlet of the water pump (7). The suction pipe (8) leads to an external water tank. A water outlet pipe (9) is fixedly installed at the outlet of the water pump (7). One end of the water outlet pipe (9) is connected to the housing (5) and leads to the inside of the first connector (6).

2. The road surface core sample extraction device according to claim 1, characterized in that, The drill bit assembly includes a second connector (10), a drill barrel (11), and a drill bit body (12). The bottom of the first connector (6) is provided with a first external thread (13), and the top of the second connector (10) is provided with a first internal thread that matches the first external thread (13). The upper and lower ends of the drill barrel (11) are respectively provided with second external threads (14). The bottom of the second connector (10) and the top of the drill bit body (12) are both provided with second internal threads that match the second external threads (14).

3. The road surface core sample extraction device according to claim 2, characterized in that, The drill barrel (11) is composed of two symmetrical half-cylinders (15). The upper and lower ends of the half-cylinders (15) are set as interface parts (16), and the middle part of the half-cylinders (15) is set as core taking part (17). The wall thickness of the core taking part (17) is greater than that of the interface part (16).

4. The road surface core sample extraction device according to claim 1, characterized in that, The trolley device (1) includes a base plate (18), on which casters (19) are fixedly installed at the bottom. A support rod (20) is fixedly installed on the upper surface of the base plate (18), and a handle (21) is fixedly installed on the support rod (20). A crossbeam (22) is fixedly installed at one end of the support rod (20).

5. A road surface core sample extraction device according to claim 4, characterized in that, The lifting assembly includes a lead screw (23) rotatably mounted on a crossbeam (22), the lead screw (23) being threadedly connected to a lifting plate (3), and a handwheel (24) being fixedly mounted on one end of the lead screw (23).

6. A road surface core sample extraction device according to claim 5, characterized in that, A column (25) is fixedly installed between the crossbeam (22) and the base plate (18). A guide block (26) is slidably installed on the column (25). The guide block (26) is fixedly connected to the lifting plate (3).

7. The road surface core sample extraction device according to claim 1, characterized in that, The engine (2) has a drive wheel (27) fixedly installed at its output end, and a driven wheel (28) is fixedly installed on the outside of the first connector (6). A belt (29) is used to drive the driven wheel (28) and the drive wheel (27).

8. A road surface core sample extraction device according to claim 1, characterized in that, A support plate (30) is fixedly installed on one side of the lifting plate (3), and the support plate (30) is fixedly connected to the engine (2). A cover (31) is fixedly installed at the bottom of the housing (5).

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