A road surface sampling device for site supervision

Abstract

The utility model discloses a road surface sampling device for construction site supervision relates to road surface sampling technical field, including the bottom plate, the inner wall welding of bottom plate has the support frame, one side welding of support frame has the fixed base, the upper end fixed connection of fixed base has the first servo motor, one end of first servo motor is provided with the first bevel gear. The utility model discloses a protective cover is set up to the sampling drill bit plays the barrier broken stone chippings splashing effect, and the second servo motor runs and exports the rotary power, and this power is steadily transmitted to the rotating shaft, drives the rotating shaft synchronous rotation, and the rotary motion of rotating shaft further acts on first telescopic link and second telescopic link, makes both complete the compound action of rotation and telescopic simultaneously, forms the efficient transmission link, and the movement of second telescopic link will drive third telescopic link to carry out synchronous telescopic rotation, and third telescopic link forms the stable connection through the connecting block and the protective cover.

Description

Technical Field

[0001] This utility model relates to the field of road engineering technology, specifically a road surface sampling device for construction site supervision. Background Technology

[0002] In road construction, pavement quality is a key factor in ensuring road safety and durability. Pavement sampling and testing is an important means of assessing pavement quality. It is necessary to obtain pavement samples through professional pavement sampling devices for testing to ensure that the strength and quality of the road meet the construction and traffic requirements, thereby improving the road's safety and durability. Therefore, a pavement sampling device for construction site supervision is needed.

[0003] When operating existing road sampling devices for construction site supervision, it is difficult to keep the frame of the sampling device level when the road surface is uneven. The outriggers are not in contact with the ground and the force is uneven, which can easily cause shaking, tilting or even tipping over. In addition, during the sampling process, the drill bit rotates at high speed to cut the road surface, which will generate a large amount of stone chips. These chips fly at high speed in all directions and can easily hit the operators or surrounding construction workers, causing personal injury. Therefore, there is an urgent need for a road sampling device for construction site supervision. Summary of the Invention

[0004] Based on this, the purpose of this utility model is to provide a road surface sampling device for construction site supervision, so as to solve the problems that when the existing road surface sampling devices for construction site supervision are used, the frame of the sampling device is difficult to keep level when the road surface is uneven, the outriggers are not in contact with the ground and the force is uneven, which easily leads to shaking, tilting or even tipping over. In addition, during the sampling process, the drill bit rotates at high speed to cut the road surface, which generates a large amount of stone chips. These chips fly around at high speed, which can easily hit the operator or the surrounding construction workers and cause personal injury.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a road surface sampling device for construction site supervision, comprising a base plate, a support frame welded to the inner wall of the base plate, a fixed base welded to one side of the support frame, a first servo motor fixedly connected to the upper end of the fixed base, a first bevel gear provided at one end of the first servo motor, a second bevel gear meshing with the outer wall of the first bevel gear, a reciprocating screw welded to one end of each of the second bevel gears, a third bevel gear meshing with the outer wall of the second bevel gear, and a rotating rod welded to one side of the third bevel gear. A fixing plate is installed on the inner wall of the reciprocating lead screw. A motor is fixedly connected to the upper end of the fixing plate. A sampling drill bit is provided at one end of the motor. A second servo motor is fixedly connected to the inner wall of the base plate. A rotating shaft is provided at one end of the second servo motor. A fixing rod is provided on the outer wall of the rotating shaft. A first telescopic rod is provided inside the fixing rod. A second telescopic rod is provided inside the first telescopic rod. A third telescopic rod is provided on the outer wall of the second telescopic rod. A connecting block is installed at one end of the third telescopic rod. A protective cover is installed on the inner wall of the connecting block. A positioning rod is provided on the inner wall of the protective cover. The bottom of each base plate is welded with a hinge seat. The hinge seat has a first slot inside. The inner wall of the hinge seat is provided with a first support rod. The outer wall of the first support rod has a second slot. The inner wall of the first support rod has a third slot. The inner wall of the third slot is welded with a telescopic spring. The other side of the telescopic spring is welded with a pressing block. The inner wall of the first support rod is provided with a second support rod. The inner wall of the second support rod is welded with a block. The inner wall of the second support rod is fitted with a bolt. The outer wall of the bolt is fitted with a nut. One end of the second support rod is provided with a foot support.

[0006] Preferably, the fixed plate is threadedly connected to the reciprocating lead screw, and the reciprocating lead screw is symmetrically arranged about the central axis of the fixed plate.

[0007] Preferably, the pressing block is engaged with the first support rod, and the pressing block is symmetrically arranged about the central axis of the first support rod.

[0008] Preferably, the blocks are arranged in a ring array on the inner wall of the second support rod, and the inner wall diameter of the second support rod is larger than the outer wall diameter of the first support rod.

[0009] Preferably, the first telescopic rod forms a telescopic structure with the fixed rod via a rotating shaft, and the inner wall of the fixed rod has a slotted design.

[0010] Preferably, the third telescopic rod forms a lifting structure with the second telescopic rod via a rotating shaft, and the outer wall of the second telescopic rod is threaded.

[0011] Preferably, the connecting block is engaged with the protective cover via a positioning rod, and the outer wall of the positioning rod is threaded.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This invention uses a protective cover to prevent the sampling drill bit from splashing stone chips. A second servo motor operates and outputs rotational power, which is smoothly transmitted to the rotating shaft, causing it to rotate synchronously. The rotational motion of the rotating shaft further acts on the first and second telescopic rods, enabling them to simultaneously complete a compound action of rotation and extension, forming an efficient transmission link. The movement of the second telescopic rod drives the third telescopic rod to rotate and extend synchronously. The third telescopic rod is firmly connected to the protective cover through a connecting block, allowing the protective cover to flexibly adjust its position according to the movement of each telescopic rod, ultimately achieving a tight fit with the sampling ground. When the sampling drill bit operates at high speed to sample the road surface, the large amount of stone chips generated will be firmly blocked within a limited space by the protective cover that fits against the ground, preventing them from splashing in all directions. This avoids the safety hazard of stone chips hitting the operator and causing injury. When the protective cover needs to be replaced, it can be separated from the corresponding connecting part simply by manually rotating the positioning rod, without the need for tools to disassemble and replace it, greatly shortening the replacement time. This invention provides stable support to the base plate by setting up a first support rod and a second support rod. By pressing the pressing block, the pressing block is compressed and disengages from the first slot inside the hinge seat, releasing the first support rod and allowing it to rotate freely. After the operator rotates it to the appropriate position, the pressing block is released, and the telescopic spring quickly releases its elasticity, causing the pressing block to precisely engage with the corresponding first slot inside the hinge seat, achieving a stable lock on the first support rod and ensuring that it will not easily shift during subsequent operations. After the first support rod is locked, the operator operates on the second support rod. The operator adjusts the second support rod up and down to the appropriate height and then rotates it, causing the locking block on the inner wall of the second support rod to engage with the second slot on the outer wall of the first support rod, forming a preliminary fixation. To make the connection even more secure, bolts and nuts are used for secondary fixation. This double fixing mechanism greatly improves the stability of the support structure and allows for timely adjustments based on uneven ground, effectively preventing the device from shaking, tilting, or even tipping over during operation. Attached Figure Description

[0013] Figure 1 This is a perspective view of the present utility model; Figure 2 This is a schematic diagram of the structure of this utility model from a vertical sectional view; Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle; Figure 4This is a cross-sectional structural diagram of some parts of this utility model; Figure 5 This utility model Figure 2 Enlarged structural diagram at point B; Figure 6 This is a structural diagram showing the disassembled parts of this utility model; Figure 7 This utility model Figure 6 Enlarged structural diagram at point C.

[0014] In the diagram: 1. Base plate; 2. Support frame; 3. Fixed base; 4. First servo motor; 5. First bevel gear; 6. Second bevel gear; 7. Reciprocating screw; 8. Third bevel gear; 9. Rotating rod; 10. Fixed plate; 11. Motor; 12. Sampling drill bit; 13. Second servo motor; 14. Rotating shaft; 15. Fixed rod; 16. First telescopic rod; 17. Second telescopic rod; 18. Third telescopic rod; 19. Connecting block; 20. Protective cover; 21. Positioning rod; 22. Hinge seat; 23. First slot; 24. First support rod; 25. Second slot; 26. Third slot; 27. Telescopic spring; 28. Pressing block; 29. ​​Second support rod; 30. Block; 31. Bolt; 32. Nut; 33. Foot support. Detailed Implementation

[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0016] The embodiments of this utility model will be described below based on its overall structure.

[0017] Please see Figure 1-7A road surface sampling device for construction site supervision includes a base plate 1. A support frame 2 is welded to the inner wall of the base plate 1. A fixed base 3 is welded to one side of the support frame 2. A first servo motor 4 is fixedly connected to the upper end of the fixed base 3. A first bevel gear 5 is provided at one end of the first servo motor 4. A second bevel gear 6 is meshed with the outer wall of the first bevel gear 5. A reciprocating screw 7 is welded to one end of each of the second bevel gears 6. A third bevel gear 8 is meshed with the outer wall of the second bevel gear 6. A rotating rod 9 is welded to one side of the third bevel gear 8. A fixing plate 10 is installed on the inner wall of the reciprocating screw 7. The fixing plate 10 is threadedly connected to the reciprocating screw 7, and the reciprocating screw 7 is symmetrically arranged about the central axis of the fixing plate 10. A motor 11 is fixedly connected to the upper end of the base plate 1. A sampling drill bit 12 is installed at one end of the motor 11. A second servo motor 13 is fixedly connected to the inner wall of the base plate 1. A rotating shaft 14 is installed at one end of the second servo motor 13. A fixed rod 15 is installed on the outer wall of the rotating shaft 14. A first telescopic rod 16 is installed inside the fixed rod 15. The first telescopic rod 16 and the fixed rod 15 form a telescopic structure through the rotating shaft 14. The inner wall of the fixed rod 15 is slotted. A second telescopic rod 17 is installed inside the first telescopic rod 16. A third telescopic rod 18 is installed on the outer wall of the second telescopic rod 17. The third telescopic rod 18 and the second telescopic rod 17 form a lifting structure through the rotating shaft 14. The outer wall of the second telescopic rod 17 is threaded. A connecting block 19 is installed at one end of the third telescopic rod 18. A protective cover 20 is installed on the inner wall of the connecting block 19, and a positioning rod 21 is provided on the inner wall of the protective cover 20. The connecting block 19 is engaged with the protective cover 20 through the positioning rod 21, and the outer wall of the positioning rod 21 is threaded. The protective cover 20 serves to prevent the sampling drill bit 12 from splashing stone chips. The second servo motor 13 operates and outputs rotational power. This power is smoothly transmitted to the rotating shaft 14, causing the rotating shaft 14 to rotate synchronously. The rotational motion of the rotating shaft 14 further acts on the first telescopic rod 16 and the second telescopic rod 17, enabling them to simultaneously complete the combined action of rotation and extension, forming an efficient transmission link. The second telescopic rod 17... The movement will drive the third telescopic rod 18 to rotate and extend synchronously. The third telescopic rod 18 is connected to the protective cover 20 through the connecting block 19, so that the protective cover 20 can flexibly adjust its position according to the movement of each telescopic rod, and finally achieve a tight fit with the sampling ground. When the sampling drill bit 12 rotates at high speed to sample the road surface, a large amount of gravel will be firmly blocked by the protective cover 20 that is in contact with the ground and will not be able to fly around. This avoids the safety hazard of gravel hitting the operator and causing injury. When the protective cover 20 needs to be replaced, it can be separated from the corresponding connecting part by simply rotating the positioning rod 21 manually. No tools are needed for disassembly and replacement, which greatly shortens the replacement time.

[0018] Please see Figure 1-7A road surface sampling device for construction site supervision includes a base plate 1 with hinge seats 22 welded to the bottom. A first slot 23 is formed inside the hinge seat 22. A first support rod 24 is provided on the inner wall of the hinge seat 22. A second slot 25 is formed on the outer wall of the first support rod 24. A third slot 26 is formed on the inner wall of the first support rod 24. A telescopic spring 27 is welded to the inner wall of the third slot 26. A pressing block 28 is welded to the other side of the telescopic spring 27. The pressing block 28 engages with the first support rod 24, and the pressing block 28 is connected to the first support rod 24 by the first support rod 24. The support rods 24 are symmetrically arranged along their central axis. A second support rod 29 is installed on the inner wall of the first support rod 24. A locking block 30 is welded to the inner wall of the second support rod 29, and the locking blocks 30 are arranged in a circular array on the inner wall of the second support rod 29. The inner diameter of the second support rod 29 is larger than the outer diameter of the first support rod 24. Bolts 31 are installed on the inner wall of the second support rod 29, and nuts 32 are installed on the outer wall of the bolts 31. A foot support 33 is installed at one end of the second support rod 29. The arrangement of the first support rod 24 and the second support rod 29 provides support for the base plate 1. For stable support, pressing the pressing block 28 compresses it, disengaging it from the first slot 23 inside the hinge seat 22. This releases the first support rod 24, allowing it to rotate freely. After rotating it to the appropriate position, releasing the pressing block 28 causes the telescopic spring 27 to quickly release its elasticity, precisely engaging the pressing block 28 into the corresponding first slot 23 inside the hinge seat 22. This securely locks the first support rod 24, ensuring it won't easily shift during subsequent operations. After the first support rod 24 is locked, the second support rod... When the support rod 29 is operated, the operator adjusts the second support rod 29 up and down to a suitable height, and then rotates it so that the locking block 30 on the inner wall of the second support rod 29 engages with the second locking groove 25 on the outer wall of the first support rod 24, forming a preliminary fixation. In order to make the connection between the two more secure, a second fixation is made by bolts 31 and nuts 32. The double fixation mechanism greatly improves the stability of the support structure, and can be adjusted in time according to uneven ground, effectively preventing the device from shaking, tilting or even tipping over during operation.

[0019] Working principle: In use, the pressing block 28 is pressed first, quickly disengaging it from the first slot 23 on the inner wall of the first support rod 24. The first support rod 24 is rotated to a specified angle, and the pressing block 28 is released, causing the telescopic spring 27 installed inside the first support rod 24 to release its elasticity. The pressing block 28 is then pushed into the first slot 23 inside the hinge seat 22 for engagement and fixation. Next, the second support rod 29 is moved to a specified position and rotated. The locking block 30 on the inner wall of the second support rod 29 engages and fixes with the third slot 26 on the outer wall of the first support rod 24. A secondary fixation is then achieved using bolts 31 and nuts 32. During sampling, the first servo motor 4 is activated, driving the first bevel gear 5 to rotate. The first bevel gear 5 then drives the second bevel gear 6 to rotate, which in turn drives the first bevel gear 6 to rotate. The reciprocating screw 7 rotates synchronously, which in turn drives the third bevel gear 8 to rotate synchronously via the second bevel gear 6. The third bevel gear 8 then drives the rotating rod 9 to rotate, which in turn drives the symmetrically arranged third bevel gear 8 to rotate. The fixed plate 10 is lowered to the designated position via the reciprocating screw 7. Then, the second servo motor 13 is turned on, which drives the rotating shaft 14 to rotate. The rotating shaft 14 drives the first telescopic rod 16 to rotate and lower. At the same time, the rotating shaft 14 drives the second telescopic rod 17 to rotate, which in turn drives the third telescopic rod 18 to rotate and lower. The connected protective cover 20 is then synchronously moved to the designated position. Finally, the motor 11 is turned on, which drives the sampling drill bit 12 to rotate and sample the road surface. This completes the use of the device. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0020] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A road surface sampling device for site supervision, comprising a base plate (1), characterized in that: A support frame (2) is welded to the inner wall of the base plate (1). A fixed base (3) is welded to one side of the support frame (2). A first servo motor (4) is fixedly connected to the upper end of the fixed base (3). A first bevel gear (5) is provided at one end of the first servo motor (4). A second bevel gear (6) is meshed with the outer wall of the first bevel gear (5). A reciprocating screw (7) is welded to one end of each of the second bevel gears (6). A third bevel gear (8) is meshed with the outer wall of the second bevel gear (6). A rotating rod (9) is welded to one side of the third bevel gear (8). A fixed plate (10) is installed on the inner wall of the reciprocating screw (7). A motor (11) is fixedly connected to the upper end of the fixed plate (10). A sampling drill bit (12) is provided at one end of the motor (11), a second servo motor (13) is fixedly connected to the inner wall of the base plate (1), a rotating shaft (14) is provided at one end of the second servo motor (13), a fixing rod (15) is provided on the outer wall of the rotating shaft (14), a first telescopic rod (16) is provided inside the fixing rod (15), a second telescopic rod (17) is provided inside the first telescopic rod (16), a third telescopic rod (18) is provided on the outer wall of the second telescopic rod (17), a connecting block (19) is installed at one end of the third telescopic rod (18), a protective cover (20) is installed on the inner wall of the connecting block (19), and a positioning rod (21) is provided on the inner wall of the protective cover (20). The bottom of the base plate (1) is welded with a hinge seat (22). The hinge seat (22) has a first slot (23) inside. The inner wall of the hinge seat (22) is provided with a first support rod (24). The outer wall of the first support rod (24) has a second slot (25). The inner wall of the first support rod (24) has a third slot (26). The inner wall of the third slot (26) is welded with a telescopic spring (27). The other side of the telescopic spring (27) is welded with a pressing block (28). The inner wall of the first support rod (24) is provided with a second support rod (29). The inner wall of the second support rod (29) is welded with a block (30). The inner wall of the second support rod (29) is installed with a bolt (31). The outer wall of the bolt (31) is installed with a nut (32). One end of the second support rod (29) is provided with a foot support (33).

2. The road surface sampling device for site supervision according to claim 1, characterized in that: The fixed plate (10) is threadedly connected to the reciprocating screw (7), and the reciprocating screw (7) is symmetrically arranged about the central axis of the fixed plate (10).

3. The road surface sampling device for site supervision according to claim 1, characterized in that: The pressing block (28) is engaged with the first support rod (24), and the pressing block (28) is symmetrically arranged about the central axis of the first support rod (24).

4. The road surface sampling device for site supervision according to claim 1, characterized in that: The card blocks (30) are arranged in a ring array on the inner wall of the second support rod (29), and the inner wall diameter of the second support rod (29) is larger than the outer wall diameter of the first support rod (24).

5. The road surface sampling device for site supervision according to claim 1, characterized in that: The first telescopic rod (16) forms a telescopic structure with the fixed rod (15) through the rotating shaft (14), and the inner wall of the fixed rod (15) is designed with a slot.

6. The road surface sampling device for site supervision according to claim 1, characterized in that: The third telescopic rod (18) forms a lifting structure with the second telescopic rod (17) through a rotating shaft (14), and the outer wall of the second telescopic rod (17) is threaded.

7. The road surface sampling device for site supervision according to claim 1, characterized in that: The connecting block (19) is engaged with the protective cover (20) via a positioning rod (21), and the outer wall of the positioning rod (21) is threaded.

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