Rapid coring machine for road construction

Abstract

The invention relates to the technical field of coring machines, in particular to a quick coring machine for road construction, which comprises a supporting plate, a supporting frame is fixedly connected to the upper end of the supporting plate, a mounting plate is connected to the side wall of the supporting frame through a lifting assembly, a fixing plate is fixedly connected to the side wall of the mounting plate, and a rotating shaft is rotatably connected to the side wall of the fixing plate in a penetrating manner. The side wall of the rotating shaft is fixedly connected with a sampling barrel through a plurality of U-shaped rods, and the lower end of the sampling barrel is fixedly connected with a plurality of drill bits; a cooling mechanism is arranged on the sampling barrel, the cooling mechanism comprises a spiral groove formed in the inner wall of the sampling barrel, a spiral ring is connected to the inner wall of the spiral groove in a sealed and sliding mode, and a spiral cavity is formed in the spiral ring. The material taking mechanism is arranged, the material taking disc moves downwards, the sample core is pushed out of the sampling barrel, the sampling barrel does not need to be knocked, and the situation that the sample core is broken under the vibration effect caused by knocking, the integrity of the sample core is damaged, and judgment on the road quality is affected is avoided.

Description

Technical Field

[0001] This invention relates to the field of coring machine technology, and specifically to a rapid coring machine for highway construction. Background Technology

[0002] In order to prevent shoddy workmanship during highway construction, it is necessary to conduct relevant tests on the road surface after the highway is completed. Highways are usually composed of surface layer, base layer and subbase layer. Under the subbase layer is the soil foundation. In the existing technology, core samples are taken from the surface layer, base layer and subbase layer by drilling with a core drill to obtain underground core samples for testing, which can effectively determine the quality of the highway.

[0003] Currently, after a coring machine samples a road, the core remains inside the sampling cylinder. During core extraction, the sampling cylinder needs to be manually disassembled and struck to remove the core. However, the core may break due to vibration caused by the striking, damaging its integrity and affecting the assessment of road quality. At the same time, because the sampling cylinder rotates at high speed, the side wall of the sampling cylinder rubs against the road, generating heat. Currently, most systems use a single nozzle for direct cooling. This method leads to excessively rapid cooling of the outer wall of the sampling cylinder, while the inner wall and lower end remain at a higher temperature, creating a significant temperature difference. This not only shortens the service life of the sampling cylinder but also easily causes deformation of the sampling cylinder due to thermal stress, affecting the accuracy of core extraction. Summary of the Invention

[0004] The purpose of this invention is to solve the problems existing in the prior art and to propose a rapid core sampling machine for highway construction.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A rapid core sampling machine for highway construction includes a support plate, a support frame fixedly connected to the upper end of the support plate, an mounting plate connected to the side wall of the support frame via a lifting assembly, a fixing plate fixedly connected to the side wall of the mounting plate, a rotating shaft rotatably connected through the side wall of the fixing plate, a sampling cylinder fixedly connected to the side wall of the rotating shaft via multiple U-shaped rods, and multiple drill bits fixedly connected to the lower end of the sampling cylinder.

[0007] The sampling cylinder is equipped with a cooling mechanism, which includes a spiral groove formed on the inner wall of the sampling cylinder. A spiral ring is slidably connected to the inner wall of the spiral groove. A spiral cavity is formed inside the spiral ring. Multiple water outlet holes are formed near the inner wall of the sampling cylinder. The number and diameter of the multiple water outlet holes increase sequentially from top to bottom. Multiple first channels communicating with the inner wall of the spiral groove are formed on the inner wall of the sampling cylinder located between two spiral grooves. Second channels corresponding to the multiple first channels are formed on the inner wall of the spiral cavity.

[0008] The rotating shaft is equipped with a material handling mechanism.

[0009] Preferably, a through groove is provided below the inner wall of the spiral cavity, which communicates with the side wall of the spiral ring, and a rubber pad is provided on the side wall of the spiral ring located in the through groove.

[0010] Preferably, a water outlet pipe is fixedly connected through the rotating shaft, and the lower part of the inner wall of the water outlet pipe is fixedly connected to the upper part of the inner wall of the spiral cavity via a flexible hose. A rotary joint is fixedly connected to the side wall of the mounting plate via a bracket. The upper end of the water outlet pipe is fixedly connected to the lower end of the rotary joint, and the upper end of the rotary joint is fixedly connected to a water inlet pipe.

[0011] Preferably, a motor is fixedly connected to the side wall of the mounting plate, and synchronous pulleys are fixedly connected to both the side wall of the motor's movable shaft and the side wall of its rotating shaft, with a synchronous belt connecting the two synchronous pulleys.

[0012] Preferably, the material handling mechanism includes a horizontal plate fixedly connected between two U-shaped rods, an electric push rod fixedly connected to the upper end of the horizontal plate, a material handling tray fixedly connected to the movable end of the electric push rod, and the side wall of the material handling tray being in contact with the inner wall of the sampling cylinder.

[0013] Preferably, a connecting plate is fixedly connected to the upper part of the inner wall of the sampling cylinder, and two rectangular rods are fixedly connected to the upper end of the connecting plate. The side walls of the two rectangular rods are slidably connected to a first threaded plate. A circular ring is fixedly connected to the upper part of the inner wall of the spiral ring through a connecting block. An annular groove is opened on the inner wall of the circular ring. A self-rotating arc plate is slidably connected to the inner wall of the annular groove. The side wall of the arc plate away from the annular groove is fixedly connected to the side wall of the first threaded plate.

[0014] Preferably, a reciprocating screw is rotatably connected to the upper end of the connecting plate, the side wall of the reciprocating screw is threadedly connected to the side wall of the first threaded plate, a crank is fixedly connected to the upper end of the reciprocating screw, and a second threaded plate is fixedly connected to the side wall of the movable shaft of the electric push rod. The second threaded plate is threadedly connected to the crank during the downward movement process.

[0015] Preferably, the sampling cylinder is provided with a support mechanism, which includes a plurality of first grooves formed at the upper end of the sampling cylinder, a second groove communicating with the inner wall of the sampling cylinder being formed below the inner wall of each of the plurality of first grooves, an arc-shaped block being slidably connected to the inner wall of each of the plurality of second grooves, a sliding plate being slidably connected to the inner wall of each of the plurality of first grooves, the side wall of the sliding plate being fixedly connected to the side wall of the arc-shaped block, and the side wall of the sliding plate near the arc-shaped block being elastically connected to the inner wall of the first groove through a plurality of springs.

[0016] Preferably, the electric push rod is fixedly connected to a plurality of drive plates corresponding one-to-one with the plurality of slide plates on the side wall above the second threaded plate. The drive plate is fixedly connected to a first wedge plate by a bracket. The slide plate is fixedly connected to a second wedge plate on the side wall away from the electric push rod. The first wedge plate squeezes the second wedge plate during the upward movement of the first wedge plate.

[0017] Compared with existing technologies, the advantages of this invention are:

[0018] 1. A cooling mechanism is installed so that the water flow rate in the sampling tube gradually increases from top to bottom, allowing the sampling tube to be fully cooled, ensuring the sampling process and preventing the outer wall of the sampling tube from cooling too quickly while the inner wall and lower end remain too hot, thus avoiding a significant temperature difference.

[0019] 2. A material-taking mechanism is set up so that the material-taking plate moves down and pushes the sample core out of the sampling cylinder. This eliminates the need to knock on the sampling cylinder and avoids the sample core breaking under the vibration caused by knocking, which would damage the integrity of the sample core and affect the judgment of highway quality.

[0020] 3. A support mechanism is set up, with multiple arc-shaped blocks that can be easily inserted into the soil to support the lower end of the sample core inside the sampling tube. This prevents the lower part of the sample core from falling off when it is removed from the road, which would affect the subsequent test results. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a rapid coring machine for highway construction proposed in this invention;

[0022] Figure 2 for Figure 1 A bottom view of the central sampling tube;

[0023] Figure 3 for Figure 1 A schematic diagram of the central sampling cylinder, cooling mechanism, and material handling mechanism;

[0024] Figure 4 for Figure 3 A structural schematic diagram in vertical cross-section;

[0025] Figure 5 for Figure 4 Enlarged structural diagram at point A;

[0026] Figure 6 This is a schematic diagram of the structure at the spiral ring.

[0027] Figure 7 for Figure 4 Enlarged structural diagram at point B;

[0028] Figure 8 for Figure 1 A schematic diagram of the rear view structure;

[0029] Figure 9 This is a schematic diagram of the spiral ring in its initial state, viewed from below.

[0030] In the diagram: 1. Support plate; 2. Support frame; 3. Lifting assembly; 4. Mounting plate; 5. Fixing plate; 6. Rotating shaft; 7. U-shaped rod; 8. Sampling cylinder; 9. Drill bit; 10. Motor; 11. Synchronous pulley; 12. Spiral groove; 13. Spiral ring; 14. Spiral cavity; 15. Water outlet; 16. First channel; 17. Second channel; 18. Through groove; 19. Water outlet pipe; 20. Flexible hose; 21. Rotary joint; 22. Water inlet pipe; 23. 24. Horizontal plate; 25. Electric push rod; 26. Material picking tray; 27. Connecting plate; 28. Circular ring; 29. ​​Connecting block; 30. Rectangular rod; 31. First threaded plate; 32. Annular groove; 33. Arc plate; 34. Reciprocating screw; 35. Rifling rod; 36. Second threaded plate; 37. First groove; 38. Second groove; 39. Arc block; 40. Slide plate; 41. Spring; 42. Drive plate; 43. First wedge plate; 44. Second wedge plate. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Reference Figures 1-9 A rapid core sampling machine for highway construction includes a support plate 1, a support frame 2 fixedly connected to the upper end of the support plate 1, and an mounting plate 4 connected to the side wall of the support frame 2 via a lifting assembly 3. It should be noted that the lifting assembly 3 can drive the mounting plate 4 to move up and down (the patent with publication number CN219495716U has been published), which is prior art. A fixing plate 5 is fixedly connected to the side wall of the mounting plate 4, and a rotating shaft 6 is rotatably connected through the side wall of the fixing plate 5. A sampling cylinder 8 is fixedly connected to the side wall of the rotating shaft 6 via multiple U-shaped rods 7, and multiple drill bits 9 are fixedly connected to the lower end of the sampling cylinder 8.

[0033] A motor 10 is fixedly connected to the side wall of the mounting plate 4. Synchronous pulleys 11 are fixedly connected to the side wall of the movable shaft of the motor 10 and the side wall of the rotating shaft 6. A synchronous belt connects the two synchronous pulleys 11.

[0034] During the sampling and testing after highway construction, the sampling cylinder 8 is first positioned directly in front of the sampling location. Then, the drive motor 10 rotates, which in turn drives the rotating shaft 6 to rotate via the synchronous belt and two synchronous pulleys 11. This drives the sampling cylinder 8 and multiple drill bits 9 to rotate via multiple U-shaped rods 7. Subsequently, the lifting assembly 3 moves the mounting plate 4 downward, causing the sampling cylinder 8 and multiple drill bits 9 to rotate to the bottom of the highway and contact the subgrade, thus completing the highway sampling operation.

[0035] The sampling cylinder 8 is equipped with a cooling mechanism, which includes a spiral groove 12 formed on the inner wall of the sampling cylinder 8. A spiral ring 13 is slidably connected to the inner wall of the spiral groove 12. A spiral cavity 14 is formed inside the spiral ring 13. Multiple water outlet holes 15 are formed near the inner wall of the spiral cavity 14. The number and diameter of the multiple water outlet holes 15 increase from top to bottom. Multiple first channels 16 (e.g., ...) are formed on the inner wall of the sampling cylinder 8 between two spiral grooves 12, communicating with the inner wall of the spiral grooves 12. Figure 5 As shown), the inner wall of the spiral cavity 14 is provided with a second channel 17 corresponding to a plurality of first channels 16.

[0036] A water outlet pipe 19 is fixedly connected through the shaft 6. The lower part of the inner wall of the water outlet pipe 19 is fixedly connected to the upper part of the inner wall of the spiral cavity 14 through a flexible hose 20. A rotary joint 21 is fixedly connected to the side wall of the mounting plate 4 through a bracket. The upper end of the water outlet pipe 19 is fixedly connected to the lower end of the rotary joint 21. A water inlet pipe 22 is fixedly connected to the upper end of the rotary joint 21.

[0037] During the high-speed rotation of the sampling cylinder 8, external cooling water can enter the spiral cavity 14 through the inlet pipe 22, rotary joint 21, outlet pipe 19, and hose 20, and then flow out through multiple outlet holes 15. At the same time, the number of outlet holes 15 increases from top to bottom, so that the water flow in the sampling cylinder 8 gradually increases from top to bottom, allowing the sampling cylinder 8 to be fully cooled, ensuring the sampling process, and avoiding the problem of excessively rapid local cooling of the outer wall of the sampling cylinder 8 while the inner wall and lower end are too hot, resulting in a significant temperature difference.

[0038] Meanwhile, the diameter of multiple water outlet holes 15 increases sequentially from top to bottom. When the spiral ring 13 rotates at high speed with the sampling cylinder 8, the cold water inside the spiral cavity 14 is enriched along the inner wall (radial outer side) of the spiral cavity 14 due to centrifugal force, forming a "high-concentration fluid layer on the wall". Since the rotation radius of the upper and lower regions of the spiral cavity 14 is the same and the centrifugal force is the same, but the flow area of ​​the lower water outlet holes 15 is larger (more numerous and with larger diameter) and the resistance is smaller, the fluid is easier to flow out from the lower holes, forming a "resistance priority distribution" effect, ensuring that the water output in the sampling cylinder 8 gradually increases from top to bottom.

[0039] like Figure 5 As shown, when the spiral groove 12 is in the initial state, the spiral ring 13 has multiple first channels 16 facing each other with their corresponding second channels 17, so that multiple axial flow channels are formed between the sampling cylinder 8 and the spiral cavity 14, making it easier for the cold water above to collect below, further ensuring the water output below the inner wall of the sampling cylinder 8.

[0040] A through groove 18 is provided on the lower part of the inner wall of the spiral cavity 14, which connects to the side wall of the spiral ring 13 (e.g. Figure 6 As shown), the spiral ring 13 is provided with a rubber pad on the side wall of the through groove 18.

[0041] When the spiral ring 13 is in the initial state of the spiral groove 12, the lower end of the spiral ring 13 is in contact with the lower part of the inner wall of the spiral groove 12 (e.g., Figure 9 As shown, the rubber pad prevents cold water from flowing out of the through groove 18. After sampling is completed, the spiral groove 12 inside the spiral ring 13 can be rotated in the forward direction and moved upward. Water can then be delivered into the spiral cavity 14 to flush out impurities in the spiral cavity 14 and allow it to flow out through the through groove 18 for continued use.

[0042] The rotating shaft 6 is equipped with a material handling mechanism, which includes a horizontal plate 23 fixedly connected between two U-shaped rods 7 (e.g., Figure 4 As shown), an electric push rod 24 is fixedly connected to the upper end of the horizontal plate 23, and a material picking tray 25 is fixedly connected to the movable end of the electric push rod 24. The side wall of the material picking tray 25 is in contact with the inner wall of the sampling cylinder 8.

[0043] After sampling is completed and the sampling cylinder 8 is removed from the road, the electric push rod 24 can be extended to move the sampling disc 25 downward, and the sample core can be pushed out of the sampling cylinder 8. There is no need to knock on the sampling cylinder 8, so as to avoid the sample core breaking under the vibration caused by knocking, which would damage the integrity of the sample core and affect the judgment of the road quality.

[0044] A connecting plate 26 is fixedly connected to the upper part of the inner wall of the sampling cylinder 8 (e.g., Figure 7 As shown), two rectangular rods 29 are fixedly connected to the upper end of the connecting plate 26. The side walls of the two rectangular rods 29 are slidably connected to the first threaded plate 30. A circular ring 27 is fixedly connected to the upper part of the inner side wall of the spiral ring 13 through the connecting block 28. An annular groove 31 is opened on the inner side wall of the circular ring 27. A self-rotating arc plate 32 is slidably connected to the inner wall of the annular groove 31. The side wall of the arc plate 32 away from the annular groove 31 is fixedly connected to the side wall of the first threaded plate 30.

[0045] A reciprocating screw 33 is rotatably connected to the upper end of the connecting plate 26. The side wall of the reciprocating screw 33 is threadedly connected to the side wall of the first threaded plate 30. A crank rod 34 is fixedly connected to the upper end of the reciprocating screw 33. A second threaded plate 35 is fixedly connected to the side wall of the movable shaft of the electric push rod 24. The second threaded plate 35 is threadedly connected to the crank rod 34 during the downward movement process.

[0046] When the electric push rod 24 extends, it drives the second threaded plate 35 to move downward. At this time, the crank rod 34 rotates under the action of the second threaded plate 35, which drives the reciprocating screw 33 to rotate, so that the first threaded plate 30 slides up and down on the side wall of the reciprocating screw 33. At this time, the spiral ring 13 is driven to rotate forward and backward and move up and down in the spiral groove 12 through the arc plate 32, the annular groove 31, the ring 27 and the connecting block 28 (furthermore, the lead of the spiral groove 12 is large, so the spiral ring 13 can easily slide in the spiral groove 12 when subjected to vertical force), so that the side wall of the spiral ring 13 can slightly disturb the side wall of the sample core, so that the sample core is separated from the inner wall of the sampling cylinder 8, and the removal of the sample core is accelerated.

[0047] It should be noted that when the electric push rod 24 is retracted and in its initial position, the first threaded plate 30 is also in its initial position (e.g., Figure 7 As shown), at this time, the spiral ring 13 is in the initial position within the spiral groove 12 (as shown). Figure 9 (As shown).

[0048] The sampling cylinder 8 is provided with a support mechanism, which includes multiple first grooves 36 (such as...) opened at the upper end of the sampling cylinder 8. Figure 5 As shown), a second groove 37 communicating with the inner wall of the sampling cylinder 8 is opened below the inner wall of each of the multiple first grooves 36. An arc-shaped block 38 is slidably connected to the inner wall of each of the multiple second grooves 37. A sliding plate 39 is slidably connected to the inner wall of each of the multiple first grooves 36. The side wall of the sliding plate 39 is fixedly connected to the side wall of the arc-shaped block 38. The side wall of the sliding plate 39 near the arc-shaped block 38 is elastically connected to the inner wall of the first groove 36 through multiple springs 40.

[0049] As the sampling cylinder 8 and multiple drill bits 9 rotate to the bottom of the road and contact the subgrade, the subgrade becomes loose under the rotation of the drill bits 9. When the multiple arc-shaped blocks 38 approach each other, they can easily insert into the soil and support the lower end of the sample core inside the sampling cylinder 8. This prevents the sample core from falling off when it is removed from the road, which would affect the subsequent test results.

[0050] The electric push rod 24 is fixedly connected to a plurality of drive plates 41 (e.g., one-to-one with a plurality of slide plates 39) on the side wall above the second threaded plate 35. Figure 7 As shown), a first wedge plate 42 is fixedly connected to the side wall of the drive plate 41 via a bracket, and a second wedge plate 43 is fixedly connected to the side wall of the slide plate 39 away from the electric push rod 24. During the upward movement of the first wedge plate 42, the second wedge plate 43 is squeezed.

[0051] After the sampling cylinder 8 and multiple drill bits 9 rotate to the bottom of the road and contact the soil to complete the sampling, the electric push rod 24 is adjusted to retract. Through multiple drive plates 41 and multiple brackets, multiple first wedge plates 42 are moved upward, so that multiple first wedge plates 42 are squeezed against multiple second wedge plates 43 during the upward movement, causing multiple sliding plates 39 to move closer to each other. When multiple arc blocks 38 move closer to each other, multiple arc blocks 38 can be easily inserted into the soil, which can support the lower end of the sample core in the sampling cylinder 8.

[0052] When the core sample needs to be removed later, the electric push rod 24 is extended. At this time, the multiple first wedge plates 42 move downward, and the pressure exerted on the multiple second wedge plates 43 by the multiple first wedge plates 42 gradually decreases to zero. At this time, the multiple sliding plates 39 move away from each other under the action of the multiple springs 40, so that the multiple arc-shaped blocks 38 move away from each other and are in their initial positions (completely located in the second groove 37, such as...). Figure 5 As shown in the figure, it does not affect the subsequent core sampling.

[0053] During the sampling and testing after highway construction, the sampling cylinder 8 is first positioned directly in front of the sampling location. Then, the drive motor 10 rotates, which drives the rotating shaft 6 to rotate via the synchronous belt and two synchronous pulleys 11. Multiple U-shaped rods 7 drive the sampling cylinder 8 and multiple drill bits 9 to rotate. Then, the lifting assembly 3 drives the mounting plate 4 to move downward, so that the sampling cylinder 8 and multiple drill bits 9 rotate at high speed to the bottom of the highway and contact the subgrade, thus completing the sampling operation of the highway.

[0054] During the high-speed rotation of the sampling cylinder 8, external cooling water can enter the spiral cavity 14 through the inlet pipe 22, rotary joint 21, outlet pipe 19 and hose 20, and then flow out through multiple outlet holes 15. At the same time, the number of multiple outlet holes 15 increases from top to bottom, so that the water output in the sampling cylinder 8 gradually increases from top to bottom, so that the sampling cylinder 8 can be fully cooled and the sampling process is guaranteed.

[0055] Meanwhile, the diameter of multiple water outlet holes 15 increases from top to bottom. When the spiral ring 13 rotates at high speed with the sampling cylinder 8, the cold water inside the spiral cavity 14 is enriched along the inner wall (radial outer side) of the spiral cavity 14 due to centrifugal force, forming a "high-concentration fluid layer on the wall". Since the rotation radius of the upper and lower regions of the spiral cavity 14 is the same and the centrifugal force is the same, but the flow area of ​​the lower water outlet holes 15 is larger (more numerous and with larger diameter) and the resistance is smaller, the fluid is easier to flow out from the lower holes, forming a "resistance priority distribution" effect, ensuring that the water output in the sampling cylinder 8 gradually increases from top to bottom.

[0056] Furthermore, when the spiral groove 12 is in the initial state, the spiral ring 13 has multiple first channels 16 facing each other with their corresponding second channels 17, which forms multiple axial flow channels between the sampling cylinder 8 and the spiral cavity 14, making it easier for the cold water above to collect below, further ensuring the water output below the inner wall of the sampling cylinder 8.

[0057] After the sampling cylinder 8 and multiple drill bits 9 rotate to the bottom of the road and contact the soil to complete the sampling, the electric push rod 24 is adjusted to retract. Through multiple drive plates 41 and multiple brackets, multiple first wedge plates 42 are moved upward, so that multiple first wedge plates 42 are squeezed against multiple second wedge plates 43 during the upward movement, causing multiple sliding plates 39 to move closer to each other. When multiple arc blocks 38 move closer to each other, multiple arc blocks 38 can be easily inserted into the soil, which can support the lower end of the sample core in the sampling cylinder 8.

[0058] When the core sample needs to be removed later, the electric push rod 24 is extended. At this time, the multiple first wedge plates 42 move downward, and the pressure exerted on the multiple second wedge plates 43 by the multiple first wedge plates 42 gradually decreases to zero. At this time, the multiple sliding plates 39 move away from each other under the action of the multiple springs 40, so that the multiple arc-shaped blocks 38 move away from each other and are in their initial positions (completely located in the second groove 37, such as...). Figure 5 As shown in the figure, this does not affect the subsequent core sampling.

[0059] The electric push rod 24 extends and drives the material taking plate 25 to move down, pushing the sample core out of the sampling cylinder 8. There is no need to knock on the sampling cylinder 8, which avoids the sample core breaking under the vibration caused by knocking, damaging the integrity of the sample core, and affecting the judgment of highway quality.

[0060] Furthermore, when the electric push rod 24 extends, it drives the second threaded plate 35 to move downward. At this time, the rake rod 34 rotates under the action of the second threaded plate 35, driving the reciprocating screw 33 to rotate, so that the first threaded plate 30 slides up and down on the side wall of the reciprocating screw 33. At this time, the spiral ring 13 is driven to rotate forward and backward and move up and down in the spiral groove 12 through the arc plate 32, the annular groove 31, the circular ring 27 and the connecting block 28, so that the side wall of the spiral ring 13 can slightly disturb the side wall of the sample core, so that the sample core is separated from the inner wall of the sampling cylinder 8, and the removal of the sample core is accelerated.

[0061] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A rapid core sampling machine for highway construction, comprising a support plate (1), wherein a support frame (2) is fixedly connected to the upper end of the support plate (1), and an mounting plate (4) is connected to the side wall of the support frame (2) via a lifting assembly (3), characterized in that, The mounting plate (4) is fixedly connected to a fixing plate (5) on its side wall. A rotating shaft (6) is rotatably connected through the side wall of the fixing plate (5). A sampling cylinder (8) is fixedly connected to the side wall of the rotating shaft (6) through multiple U-shaped rods (7). Multiple drill bits (9) are fixedly connected to the lower end of the sampling cylinder (8). The sampling cylinder (8) is provided with a cooling mechanism, which includes a spiral groove (12) opened on the inner wall of the sampling cylinder (8). A spiral ring (13) is slidably connected to the inner wall of the spiral groove (12). A spiral cavity (14) is opened in the spiral ring (13). Multiple water outlet holes (15) are opened on the inner wall of the spiral cavity (14) near the inner wall of the sampling cylinder (8). The number and diameter of the multiple water outlet holes (15) increase from top to bottom. Multiple first channels (16) communicating with the inner wall of the spiral groove (12) are opened on the inner wall of the sampling cylinder (8) between the two spiral grooves (12). A second channel (17) corresponding to the multiple first channels (16) is opened on the inner wall of the spiral cavity (14). The rotating shaft (6) is equipped with a material handling mechanism.

2. The rapid coring machine for highway construction according to claim 1, characterized in that, The spiral cavity (14) has a through groove (18) below the inner wall, which is connected to the side wall of the spiral ring (13). The spiral ring (13) is provided with a rubber pad on the side wall of the through groove (18).

3. The rapid coring machine for highway construction according to claim 1, characterized in that, A water outlet pipe (19) is fixedly connected through the shaft (6). The lower part of the inner wall of the water outlet pipe (19) is fixedly connected to the upper part of the inner wall of the spiral cavity (14) through a hose (20). A rotary joint (21) is fixedly connected to the side wall of the mounting plate (4) through a bracket. The upper end of the water outlet pipe (19) is fixedly connected to the lower end of the rotary joint (21). The upper end of the rotary joint (21) is fixedly connected to an inlet pipe (22).

4. A rapid coring machine for highway construction according to claim 1, characterized in that, A motor (10) is fixedly connected to the side wall of the mounting plate (4). Synchronous pulleys (11) are fixedly connected to the side wall of the movable shaft of the motor (10) and the side wall of the rotating shaft (6). A synchronous belt is connected between the two synchronous pulleys (11).

5. A rapid coring machine for highway construction according to claim 1, characterized in that, The material taking mechanism includes a horizontal plate (23) fixedly connected between two U-shaped rods (7), an electric push rod (24) fixedly connected to the upper end of the horizontal plate (23), a material taking plate (25) fixedly connected to the movable end of the electric push rod (24), and the side wall of the material taking plate (25) is in contact with the inner wall of the sampling cylinder (8).

6. A rapid coring machine for highway construction according to claim 5, characterized in that, A connecting plate (26) is fixedly connected to the upper part of the inner wall of the sampling tube (8). Two rectangular rods (29) are fixedly connected to the upper end of the connecting plate (26). The side walls of the two rectangular rods (29) are slidably connected to a first threaded plate (30). A circular ring (27) is fixedly connected to the upper part of the inner wall of the spiral ring (13) through a connecting block (28). An annular groove (31) is opened on the inner wall of the circular ring (27). A self-rotating arc plate (32) is slidably connected to the inner wall of the annular groove (31). The side wall of the arc plate (32) away from the annular groove (31) is fixedly connected to the side wall of the first threaded plate (30).

7. A rapid coring machine for highway construction according to claim 6, characterized in that, The upper end of the connecting plate (26) is rotatably connected to a reciprocating screw (33), the side wall of the reciprocating screw (33) is threadedly connected to the side wall of the first threaded plate (30), the upper end of the reciprocating screw (33) is fixedly connected to a rifle rod (34), the side wall of the movable shaft of the electric push rod (24) is fixedly connected to a second threaded plate (35), and the second threaded plate (35) is threadedly connected to the rifle rod (34) during the downward movement process.

8. A rapid coring machine for highway construction according to claim 7, characterized in that, The sampling cylinder (8) is provided with a support mechanism, which includes a plurality of first grooves (36) opened at the upper end of the sampling cylinder (8). A second groove (37) communicating with the inner wall of the sampling cylinder (8) is opened below the inner wall of the plurality of first grooves (36). An arc block (38) is slidably connected to the inner wall of the plurality of second grooves (37). A sliding plate (39) is slidably connected to the inner wall of the plurality of first grooves (36). The side wall of the sliding plate (39) is fixedly connected to the side wall of the arc block (38). The side wall of the sliding plate (39) near the arc block (38) is elastically connected to the inner wall of the first groove (36) through a plurality of springs (40).

9. A rapid coring machine for highway construction according to claim 8, characterized in that, The electric push rod (24) is fixedly connected to a plurality of drive plates (41) corresponding to a plurality of slide plates (39) on the side wall above the second threaded plate (35). The side wall of the drive plate (41) is fixedly connected to a first wedge plate (42) by a bracket. The side wall of the slide plate (39) away from the electric push rod (24) is fixedly connected to a second wedge plate (43). The first wedge plate (42) squeezes the second wedge plate (43) during the upward movement.

Images