Expressway roadbed gravel tamping and sampling device and sampling method thereof

Abstract

The invention relates to the technical field of expressways, in particular to an expressway subgrade gravel tamping and sampling device and a sampling method thereof.The expressway subgrade gravel tamping and sampling device comprises a core drilling machine body and a drilling pipe, and further comprises a sampling ring arranged below the drilling pipe and used for taking out samples; according to the highway subgrade gravel tamping and sampling device, through the arrangement of the sleeving assembly, especially the application of the telescopic piece, the distance between the sampling ring and the top of the drill pipe can be controlled, so that the specification of a sample is not limited by a synchronous plate in the sampling process of the drill pipe, and the sampling can be performed to the maximum extent according to the height of the drill pipe; due to the flexibility, the device can adapt to roadbed gravel layers with different depths, the sampling accuracy and practicability are improved, a bottom supporting assembly can automatically trigger a control panel through cooperation of a trigger piece and a control piece when a second telescopic plate descends to a certain position, the control panel is driven to lift the bottom of a sample, and the sampling accuracy is improved. The sample is prevented from falling or being damaged in the sampling process, and the sampling efficiency and the integrity of the sample are improved.

Description

Technical Field

[0001] The invention relates to the technical field of expressways, in particular to an expressway roadbed gravel compaction sampling device and a sampling method thereof. Background Art

[0002] The main purpose of highway roadbed gravel tamping sampling is to evaluate the compaction degree of the roadbed, the strength and stability of the gravel, so as to ensure the quality and safety of the highway. Through sampling and analysis, key indicators such as the density, moisture content, and particle grading of the roadbed gravel can be understood, so as to determine whether the roadbed meets the design requirements. In the prior art, a road surface coring machine is usually used to drill holes in the roadbed for sampling. After the drilling is completed, the sample is usually left on the drilled roadbed or in the drill pipe. When the sample is left in the hole drilled on the roadbed, it can be clamped by a special pliers and then taken out. If the sample is left in the drill pipe, the staff needs to use a rubber hammer to knock on the outer wall of the drill pipe to vibrate the drill pipe and then take out the sample; However, we found in actual use that the highway roadbed gravel does not have the same adhesion as concrete after compaction. When the staff uses a rubber hammer to hit the drill pipe, the sample in the drill pipe is very likely to be shaken and scattered, thereby destroying the integrity of the sample in the drill pipe and affecting the subsequent detection of the sample. For this reason, we propose a highway roadbed gravel compaction sampling device. Summary of the invention

[0003] A technical problem to be solved by the present application is: how to complete sample collection without affecting the integrity of the sample in the drill pipe and avoid affecting the subsequent detection of the sample.

[0004] In order to solve the above technical problems, the present application provides a highway roadbed gravel compaction sampling device, including a core drilling machine body and a drill pipe, and also includes A sampling ring is arranged below the drill pipe and is used to take out samples; A plurality of cutting plates are provided, and the plurality of cutting plates are all provided at the bottom end of the sampling ring, and the samples are cut out by using the plurality of cutting plates; A sheathing assembly is arranged in the drill pipe, and the sample is sheathed by the sheathing assembly, so that the sample can be taken out of the drill pipe together with the sampling ring; The bottom supporting component is arranged below the sampling ring, and is used to lift the bottom of the sample.

[0005] In some embodiments, the sleeve assembly includes a telescopic member arranged in the drill pipe, and the telescopic member is used to adjust the distance between the sampling ring and the top of the drill pipe. A synchronization member is arranged in the drill pipe, and the synchronization member is used to drive the synchronous movement of the telescopic member. A locking member is arranged on the top of the drill pipe, and the position of the sampling ring is locked by the locking member.

[0006] In some embodiments, the telescopic member includes a sliding groove opened in the drill pipe, and the sliding grooves are provided in plurality, a first telescopic plate is slidably provided in each of the plurality of sliding grooves, the bottom ends of the plurality of first telescopic plates are provided at the top of the sampling ring, telescopic grooves are opened in the plurality of first telescopic plates, a second telescopic plate is slidably provided in the plurality of telescopic grooves, the opposite sides of the plurality of first telescopic plates are slightly smaller in diameter than the inner wall of the drill pipe, the distance between the plurality of first telescopic plates and the axis of the drill pipe is shorter, the inner walls of the plurality of cutting plates and the inner walls of the sampling ring are located on the same arc surface as the inner walls of the plurality of first telescopic plates.

[0007] In some embodiments, the synchronization component includes connecting plates respectively arranged at the top of multiple second telescopic plates, synchronization plates are arranged at the opposite ends of the multiple connecting plates, a synchronization spring is arranged on the top of the inner wall of the drill pipe, the bottom end of the synchronization spring is in contact with the top of the synchronization plate, and multiple vertical plates are arranged on the top of the synchronization plate, and the opposite sides of the tops of the multiple vertical plates are all inclined surfaces.

[0008] In some embodiments, the locking member includes a protective cover arranged on the top of the drill pipe, a plurality of support frames are arranged on the top of the drill pipe, and a locking rod is slidably arranged in each of the support frames, a plurality of the vertical plates are provided with a locking groove used in conjunction with the plurality of the locking rods, and the lower parts of the opposite ends of the plurality of locking rods are inclined surfaces, a first limiting plate is arranged on the opposite ends of the plurality of locking rods, and the plurality of the first limiting plates are in contact with the outer side of the protective cover, a second limiting plate is arranged on the outer side of the plurality of locking rods, and the plurality of the second limiting plates are respectively located between the plurality of support frames and the plurality of the first limiting plates, a locking spring is arranged on the outer side of the plurality of locking rods, one end of the plurality of locking springs is arranged on the inner wall of the protective cover, and the other end thereof is arranged on one side of the second limiting plate corresponding thereto; Multiple locking rods are provided with oblique grooves on the top, and an extrusion plate is slidably provided on the top of the protective cover for use with the multiple oblique grooves. The bottom ends of the multiple extrusion plates are inclined surfaces, and extrusion springs are provided on the outside of the multiple extrusion plates. Extrusion rings are provided on the tops of the multiple extrusion plates, and the bottom ends of the multiple extrusion springs are provided on the top of the protective cover, and the other ends thereof are provided on the bottom of the extrusion ring.

[0009] In some embodiments, the bottom supporting assembly includes a trigger member disposed in the sampling ring, and the trigger member is used to generate power to support the bottom of the sample. A control member used in conjunction with the trigger member is disposed below the sampling ring, and the control member is respectively located in multiple groups of cutting plates, and the control member is used to lift the bottom of the sample.

[0010] In some embodiments, the trigger member includes trigger plates that are respectively slidably arranged in the plurality of telescopic grooves, a transmission plate is arranged at the bottom of the plurality of trigger plates, the plurality of transmission plates penetrate and are slidably arranged in the sampling ring, the bottom ends of the plurality of transmission plates are inclined surfaces, and the plurality of transmission plates are slidably arranged in the cutting plate.

[0011] In some embodiments, the control member includes control plates that are slidably arranged in the plurality of cutting plates respectively, control springs are arranged on the back sides of the plurality of control plates, the other ends of the plurality of control springs are arranged on the corresponding cutting plates, control grooves for use with the plurality of transmission plates are opened on the tops of the plurality of control plates, and the plurality of control grooves are all inclined surfaces, guide plates are arranged at both ends of the plurality of control plates, and guide grooves for use with the plurality of guide plates are opened in the plurality of cutting plates.

[0012] In some embodiments, a circular shaft is provided on the top of the protective cover, a cushion block is rotatably provided on the outer side of the circular shaft, and the cushion block is located below the extrusion ring, a torsion spring is provided on the outer side of the circular shaft, and the other end of the torsion spring is provided in the cushion block.

[0013] A highway roadbed gravel compaction sampling method: S1: Start the core drilling machine body to drive the drill pipe to rotate; S2: Control the drill pipe to move slowly downward, driving the cutting plate to cut the roadbed until the required depth is reached; S3: Close the core drilling machine body and control the drill pipe to rise; S4: Press the squeeze ring; S5: Pull the sampling ring to drive the sampling ring away from the drill pipe; S6: lift the synchronization board and drive the control board to reset; S7: Pour out the sample and complete sampling.

[0014] The present invention has at least the following beneficial effects: By setting up the sleeve assembly, especially the use of the telescopic part, the distance between the sampling ring and the top of the drill pipe can be controlled, so that during the sampling process of the drill pipe, the specifications of the sample are not limited by the synchronization plate, and the maximum sampling can be performed according to the height of the drill pipe. This flexibility enables the device to adapt to different depths of roadbed gravel layers, thereby improving the accuracy and practicality of sampling. The bottom support assembly can automatically trigger the control board when the second telescopic plate descends to a certain position through the cooperation of the trigger part and the control part, driving the control board to lift the bottom of the sample, thereby avoiding the sample from falling or being damaged during the sampling process, and improving the sampling efficiency and the integrity of the sample. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a side cross-sectional schematic diagram of the drill pipe structure of the present invention; Figure 3 It is a side sectional schematic diagram of a part of the structure of the sleeve taking component of the present invention; Figure 4 It is a schematic diagram of the exploded structure of the locking member of the present invention; Figure 5 It is a partial structural schematic diagram of the telescopic member of the present invention; Figure 6 It is a schematic diagram of the telescopic slot structure of the present invention; Figure 7 This is a schematic diagram of the sliding groove structure of the present invention; Figure 8 This is an exploded schematic diagram of the control component structure of the present invention; Fig. 9 This is a schematic diagram of the cushion block structure of the present invention; Fig.10 It is a schematic diagram of the torsion spring structure of the present invention.

[0016] In the figure: 1-core drilling machine body; 2-drill pipe; 3-sampling ring; 4-cutting plate; 5-sleeve assembly; 6-bottom support assembly; 7-telescopic member; 71-sliding groove; 72-first telescopic plate; 73-telescopic groove; 74-second telescopic plate; 8-synchronizing member; 81-connecting plate; 82-synchronizing plate; 83-synchronizing spring; 84-vertical plate; 9-locking member; 91-protective cover; 92-support frame; 93-locking rod; 94-locking groove ;95-first limit plate;96-second limit plate;97-locking spring;98-bevel groove;99-extrusion plate;910-extrusion spring;911-extrusion ring;10-trigger;101-trigger plate;102-transmission plate;11-control member;111-control plate;112-control spring;113-control groove;114-guide plate;115-guide groove;12-round shaft;13-pad;14-torsion spring. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example 1: Please refer to Figure 1-8 The present invention provides a technical solution: a highway roadbed gravel compaction sampling device, including a core drilling machine body 1 and a drill pipe 2, and also includes A sampling ring 3 is arranged below the drill pipe 2, and a sample is taken out by using the sampling ring 3; A plurality of cutting plates 4 are provided, and the plurality of cutting plates 4 are all provided at the bottom end of the sampling ring 3, and the samples are cut out by using the plurality of cutting plates 4; The sleeve assembly 5 is arranged in the drill pipe 2, and the sample is sleeved by the sleeve assembly 5, so that the sample can be taken out of the drill pipe 2 together with the sampling ring 3; The bottom supporting component 6 is arranged below the sampling ring 3, and is used to support the bottom of the sample.

[0018] The sleeve assembly 5 includes a telescopic member 7 arranged in the drill pipe 2, and the telescopic member 7 is used to adjust the distance between the sampling ring 3 and the top of the drill pipe 2. A synchronous member 8 is arranged in the drill pipe 2, and the synchronous member 8 is used to drive the synchronous movement of the telescopic member 7. A locking member 9 is arranged on the top of the drill pipe 2, and the locking member 9 is used to lock the position of the sampling ring 3.

[0019] The telescopic member 7 includes a sliding groove 71 provided in the drill pipe 2, and a plurality of sliding grooves 71 are provided, a first telescopic plate 72 is slidably provided in each of the plurality of sliding grooves 71, a plurality of bottom ends of the first telescopic plates 72 are provided at the top of the sampling ring 3, a telescopic groove 73 is provided in each of the plurality of first telescopic plates 72, a second telescopic plate 74 is slidably provided in each of the plurality of telescopic grooves 73, the opposite sides of the plurality of first telescopic plates 72 are slightly smaller than the diameter of the inner wall of the drill pipe 2, the plurality of first telescopic plates 72 are shorter at a distance from the axis of the drill pipe 2, the inner walls of the plurality of cutting plates 4 and the inner walls of the sampling ring 3 are located on the same arc surface as the inner walls of the plurality of first telescopic plates 72, and when the plurality of second telescopic plates 74 move downward, the plurality of second telescopic plates 74 will slide in the corresponding telescopic grooves 73 at the same time, and through the plurality of first telescopic plates The first telescopic plate 72 is guided to directly hit the corresponding trigger plate 101. Since the first telescopic plate 72 is closer to the axis of the drill pipe 2 than the drill pipe 2, the samples between the multiple first telescopic plates 72 can avoid the friction between the inner wall of the drill pipe 2 and the samples, so that it is more convenient for the staff to take out the samples. The multiple sliding grooves 71 opened in the drill pipe 2 can not only limit the first telescopic plate 72, but also prevent the first telescopic plate 72 from sliding horizontally when the cutting plate 4 at the bottom of the sampling ring 3 cuts the sample, resulting in the cutting plate 4 being unable to cut the sample. Its function is that through the sliding between the first telescopic plate 72 and the second telescopic plate 74, it can avoid the synchronization plate 82 from limiting the height of the sample, so that the cutting plate 4 can cut and sample deeper samples.

[0020] The synchronous member 8 includes connecting plates 81 respectively arranged at the top ends of the plurality of second telescopic plates 74, and synchronous plates 82 are arranged at the opposite ends of the plurality of connecting plates 81. A synchronous spring 83 is arranged at the top of the inner wall of the drill pipe 2, and the bottom end of the synchronous spring 83 is in contact with the top of the synchronous plate 82. A plurality of vertical plates 84 are arranged at the top of the synchronous plate 82, and the opposite sides of the top ends of the plurality of vertical plates 84 are all inclined surfaces. When the locking groove 94 on the vertical plate 84 is not controlled by the locking rod 93, the synchronous spring 83 will push the synchronous plate 82, so that the synchronous plate 82 moves downward under the action of the synchronous spring 83, and when the synchronous plate 82 moves downward, it will drive the plurality of connecting plates 81 on its outer side to move downward synchronously, thereby causing the plurality of second telescopic plates 74 at the opposite ends of the plurality of connecting plates 81 to move downward synchronously. Its function is to drive the plurality of connecting plates 81 to move downward simultaneously through the synchronous plate 82, thereby causing the plurality of second telescopic plates 74 to move downward synchronously, thereby causing the plurality of control plates 111 to be triggered simultaneously.

[0021] The locking member 9 includes a protective cover 91 arranged on the top of the drill pipe 2, a plurality of support frames 92 are arranged on the top of the drill pipe 2, and a locking rod 93 is slidably arranged in each of the plurality of support frames 92, a plurality of vertical plates 84 are provided with a locking groove 94 used in conjunction with the plurality of locking rods 93, the lower parts of the opposite ends of the plurality of locking rods 93 are all inclined, a first limiting plate 95 is arranged on the opposite ends of the plurality of locking rods 93, and the plurality of first limiting plates 95 are fitted with the outer side of the protective cover 91, a second limiting plate 96 is arranged on the outer side of the plurality of locking rods 93, and the plurality of second limiting plates 96 are respectively located between the plurality of support frames 92 and the plurality of first limiting plates 95, a locking spring 97 is arranged on the outer side of the plurality of locking rods 93, one end of the plurality of locking springs 97 is arranged on the inner wall of the protective cover 91, and the other end thereof is arranged on the side of the second limiting plate 96 corresponding thereto; The tops of the multiple locking rods 93 are all provided with inclined grooves 98, and the top of the protective cover 91 is slidably provided with extrusion plates 99 used in conjunction with the multiple inclined grooves 98. The bottom ends of the multiple extrusion plates 99 are all inclined surfaces, and the outer sides of the multiple extrusion plates 99 are provided with extrusion springs 910. The tops of the multiple extrusion plates 99 are provided with extrusion rings 911, and the bottom ends of the multiple extrusion springs 910 are all set on the top of the protective cover 91, and the other ends are all set at the bottom of the extrusion ring 911. The extrusion ring 911 is pressed downward. When the extrusion ring 911 is squeezed, the extrusion plate 99 at the bottom thereof will be controlled to move downward. When the extrusion plate 99 moves downward, it will be inserted into the inclined groove 98 of the locking rod 93 through the inclined surface at its bottom, so that the locking rod 93 moves outward. When the locking rod 93 moves outward, the locking rod 93 will be separated from the locking groove 94 on the vertical plate 84, so that the vertical plate 84 is not restricted by the locking rod 93 and can fall freely. The protective cover set on the drill pipe 2 91 can prevent the accidental separation of the drill pipe 2 and the sampling ring 3 caused by the staff's accidental touch or other flying debris. The squeezing spring 910 arranged at the bottom of the squeezing ring 911 can control the squeezing ring 911 to reset after the staff disengages from squeezing the squeezing ring 911, and make the squeezing plate 99 disengage from squeezing the inclined groove 98 on the locking rod 93. The locking spring 97 arranged on the outside of the locking rod 93 can control the locking rod 93 to reset in time after the squeezing plate 99 releases the squeezing of the inclined groove 98. The first limiting plate 95 and the second limiting plate 96 arranged at one end and the outside of the locking rod 93 can prevent the locking rod 93 from deviating from the predetermined trajectory under the action of the locking spring 97 and the squeezing plate 99, thereby ensuring the stable operation of the locking rod 93. Its function is to fix the position of the sampling ring 3 when the drill pipe 2 cuts the sample, and to control the separation of the sampling ring 3 and the drill pipe 2 during the sampling process.

[0022] The bottom supporting assembly 6 includes a trigger member 10 arranged in the sampling ring 3, and the trigger member 10 is used to generate power to support the bottom of the sample. A control member 11 used in conjunction with the trigger member 10 is arranged below the sampling ring 3, and the control member 11 is respectively located in multiple groups of cutting plates 4, and the control member 11 is used to lift the bottom of the sample.

[0023] The trigger member 10 includes trigger plates 101 that are respectively slidably arranged in multiple telescopic grooves 73, and transmission plates 102 are arranged at the bottom of the multiple trigger plates 101. The multiple transmission plates 102 penetrate and are slidably arranged in the sampling ring 3. The bottom ends of the multiple transmission plates 102 are inclined surfaces, and the multiple transmission plates 102 are all slidably arranged in the cutting plate 4. When the second telescopic plate 74 hits the trigger plate 101, the trigger plate 101 will slide downward in the telescopic groove 73, and the downward sliding trigger plate 101 will drive the transmission plate 102 at its bottom to move downward together, so that the transmission plate 102 slides in the sampling ring 3, and the downward moving transmission plate 102 will squeeze the control groove 113 at the top of the control plate 111 through the inclined surface at its bottom, and its function is to transmit the downward force of the second telescopic plate 74, so as to make the control plate 111 slide in the corresponding cutting plate 4.

[0024] The control member 11 includes control plates 111 that are respectively slidably arranged in the plurality of cutting plates 4, the plurality of control plates 111 are each provided with a control spring 112 on the opposite sides thereof, the other ends of the plurality of control springs 112 are arranged on the corresponding cutting plates 4, the tops of the plurality of control plates 111 are each provided with a control groove 113 that is used in conjunction with the plurality of transmission plates 102, and the plurality of control grooves 113 are all inclined surfaces, the two ends of the plurality of control plates 111 are each provided with a guide plate 114, the plurality of cutting plates 4 are each provided with a guide groove 115 that is used in conjunction with the plurality of guide plates 114, when the control groove 113 on the top of the control plate 111 is squeezed by the transmission plate 102, the control plate 11 The guide plates 114 at both ends of the control plate 111 slide in the guide grooves 115, thereby making the control plate 111 slide in the corresponding cutting plate 4, so that the multiple control plates 111 move toward the opposite side and drive the multiple control plates 111 to support the bottom of the sample, so as to prevent the sample from sliding off the axis of the sampling ring 3 during the sampling process, and the control spring 112 arranged on one side of the control plate 111 can drive the control plate 111 to reset after the transmission plate 102 is released from the squeezing of the control groove 113, and its function is that, through the movement of the multiple control plates 111, the bottom of the sample can be supported, so as to prevent the sample from sliding off suddenly and ensure the integrity of the sample.

[0025] When in use, the core drilling machine body 1 is started to control the drill pipe 2 at its output end to rotate. When the drill pipe 2 rotates, the drill pipe 2 is controlled to move slowly downward by the core drilling machine body 1, and the roadbed is cut by the cutting plate 4. When the cutting is completed, the drill pipe 2 is controlled to rise, and the core drilling machine body 1 is closed. At this time, the cut sample will rise together with the drill pipe 2. When the sample follows the drill pipe 2 to leave the roadbed and the sample in the drill pipe 2 needs to be sampled, the squeezing ring 911 is pressed downward. When the squeezing ring 911 is squeezed, the squeezing plate 99 at the bottom thereof will be controlled to move downward, and the squeezing plate 99 will be inserted into the locking rod 93 through the inclined surface at its bottom when moving downward. The locking rod 93 is in the inclined groove 98, so that the locking rod 93 moves outward. When the locking rod 93 moves outward, the locking rod 93 will be separated from the locking groove 94 on the vertical plate 84, so that the vertical plate 84 is not restricted by the locking rod 93 and can fall freely. The protective cover 91 arranged on the drill pipe 2 can prevent the staff from accidentally touching or other splashing debris from hitting, resulting in the accidental separation of the drill pipe 2 and the sampling ring 3. The extrusion spring 910 arranged at the bottom of the extrusion ring 911 can control the extrusion ring 911 to reset after the staff is separated from the extrusion ring 911, and make the extrusion plate 99 separate from the extrusion of the inclined groove 98 on the locking rod 93. The locking spring 97 arranged on the outside of the locking rod 93 can release the extrusion plate 99 from the inclined groove 98 After squeezing, the control lock rod 93 is reset in time, and the first limit plate 95 and the second limit plate 96 arranged at one end and the outer side of the lock rod 93 can prevent the lock rod 93 from deviating from the predetermined trajectory under the action of the locking spring 97 and the squeezing plate 99, thereby ensuring the stable operation of the lock rod 93. When the lock groove 94 on the vertical plate 84 is not controlled by the lock rod 93, the synchronization spring 83 will push the synchronization plate 82, so that the synchronization plate 82 moves downward under the action of the synchronization spring 83. When the synchronization plate 82 moves downward, it will drive the multiple connecting plates 81 on its outer side to move downward synchronously, thereby making the multiple second telescopic plates 74 at the opposite ends of the multiple connecting plates 81 move downward synchronously. When the retractable plate 74 moves downward, the multiple second retractable plates 74 will slide in the corresponding retractable grooves 73 at the same time, and directly hit the corresponding trigger plate 101 through the guidance of the multiple first retractable plates 72. Since the first retractable plates 72 are closer to the axis of the drill pipe 2 than the drill pipe 2, the samples between the multiple first retractable plates 72 can avoid friction between the inner wall of the drill pipe 2 and the samples, so that it is more convenient for the staff to take out the samples. The multiple sliding grooves 71 provided in the drill pipe 2 can not only limit the first retractable plates 72, but also prevent the first retractable plates 72 from sliding horizontally when the cutting plate 4 at the bottom of the sampling ring 3 cuts the sample, so that the cutting plate 4 cannot cut the sample. When the second telescopic plate 74 hits the trigger plate 101, the trigger plate 101 will slide downward in the telescopic groove 73, and the downward sliding trigger plate 101 will drive the transmission plate 102 at its bottom to move downward together, so that the transmission plate 102 slides in the sampling ring 3, and the downward moving transmission plate 102 will squeeze the control groove 113 at the top of the control plate 111 through the inclined surface of its bottom end. When the control groove 113 at the top of the control plate 111 is squeezed by the transmission plate 102, the guide plates 114 at both ends of the control plate 111 will slide in the guide groove 115, and then the control plate 111 will slide in the corresponding cutting plate 4, so that the multiple control plates 111 move to their opposite sides at the same time, driving the multiple control plates 111 to support the bottom of the sample, so as to prevent the sample from sliding off the axis of the sampling ring 3 during the sampling process, and the control spring 112 arranged on one side of the control plate 111 can drive the control plate 111 to reset after the transmission plate 102 is free from squeezing the control groove 113; When the staff needs to take out the sample, they pull the sampling ring 3 to separate the sampling ring 3 from the drill pipe 2, and then gently pull the synchronization plate 82 upward to separate the plurality of second telescopic plates 74 from squeezing the trigger plate 101, so that the control plate 111 can be reset and the sample can be taken out.

[0026] A highway roadbed gravel compaction sampling method: S1: Start the core drilling machine body to drive the drill pipe to rotate; S2: Control the drill pipe to move slowly downward, driving the cutting plate to cut the roadbed until the required depth is reached; S3: Close the core drilling machine body and control the drill pipe to rise; S4: Press the squeeze ring; S5: Pull the sampling ring to drive the sampling ring away from the drill pipe; S6: lift the synchronization board and drive the control board to reset; S7: Pour out the sample and complete sampling.

[0027] Example 2: Please refer to Fig. 9 , Fig.10 , the present invention provides a technical solution: A round shaft 12 is provided on the top of the protective cover 91, and a pad 13 is rotatably provided on the outer side of the round shaft 12, and the pad 13 is located below the extrusion ring 911. A torsion spring 14 is provided on the outer side of the round shaft 12, and the other end of the torsion spring 14 is provided in the pad 13. When it is necessary to press the extrusion ring 911 downward, the pad 13 is rotated to make the position of the pad 13 leave the bottom of the extrusion ring 911, and then the extrusion ring 911 is pressed downward. The torsion spring 14 provided in the pad 13 can control the pad 13 to reset after the staff releases the force applied to the pad 13. Its function is to prevent the staff from accidentally touching the extrusion ring 911, which will cause the control board 111 to reset suddenly.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0029] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A highway roadbed gravel compaction sampling device, comprising a core drilling machine body (1) and a drill pipe (2), characterized in that: Also includes A sampling ring (3) is arranged below the drill pipe (2), and a sample is taken out by using the sampling ring (3); A plurality of cutting plates (4) are provided, and the plurality of cutting plates (4) are all provided at the bottom end of the sampling ring (3), and the samples are cut out by using the plurality of cutting plates (4); A sheathing assembly (5) is arranged in the drill pipe (2), and the sheathing assembly (5) is used to sheath the sample, so that the sample can be taken out of the drill pipe (2) together with the sampling ring (3); A bottom supporting component (6) is arranged below the sampling ring (3), and the bottom of the sample is supported by the bottom supporting component (6).

2. The highway roadbed gravel compaction sampling device according to claim 1 is characterized in that: The sleeve assembly (5) comprises a telescopic member (7) arranged in the drill pipe (2), and the distance between the sampling ring (3) and the top of the drill pipe (2) is adjusted by using the telescopic member (7). A synchronous member (8) is arranged in the drill pipe (2), and the synchronous member (8) is used to drive the synchronous movement of the telescopic member (7). A locking member (9) is arranged at the top of the drill pipe (2), and the locking member (9) is used to lock the position of the sampling ring (3).

3. The highway roadbed gravel compaction sampling device according to claim 2 is characterized in that: The telescopic member (7) comprises a sliding groove (71) provided in the drill pipe (2), and the sliding groove (71) is provided in plurality, a first telescopic plate (72) is slidably provided in each of the plurality of sliding grooves (71), the bottom ends of the plurality of first telescopic plates (72) are provided at the top of the sampling ring (3), a telescopic groove (73) is provided in each of the plurality of first telescopic plates (72), a second telescopic plate (74) is slidably provided in each of the plurality of telescopic grooves (73), the opposite sides of the plurality of first telescopic plates (72) are slightly smaller in diameter than the inner wall of the drill pipe (2), the distance between the plurality of first telescopic plates (72) and the axis of the drill pipe (2) is shorter, and the inner walls of the plurality of cutting plates (4) and the inner wall of the sampling ring (3) are located on the same arc surface as the inner walls of the plurality of first telescopic plates (72).

4. The highway roadbed gravel compaction sampling device according to claim 3 is characterized in that: The synchronous member (8) comprises connecting plates (81) respectively arranged at the top ends of the plurality of second telescopic plates (74); synchronous plates (82) are arranged at opposite ends of the plurality of connecting plates (81); a synchronous spring (83) is arranged at the top of the inner wall of the drill pipe (2); the bottom end of the synchronous spring (83) is in contact with the top of the synchronous plate (82); a plurality of vertical plates (84) are arranged at the top of the synchronous plate (82); and the opposite sides of the top ends of the plurality of vertical plates (84) are inclined surfaces.

5. The highway roadbed gravel compaction sampling device according to claim 4 is characterized in that: The locking member (9) comprises a protective cover (91) arranged on the top of the drill pipe (2), a plurality of support frames (92) are arranged on the top of the drill pipe (2), and a locking rod (93) is slidably arranged in each of the plurality of support frames (92), a locking groove (94) for use with the plurality of locking rods (93) is opened on each of the plurality of vertical plates (84), the lower sides of the plurality of locking rods (93) are inclined, the opposite ends of the plurality of locking rods (93) are arranged with a first limit plate (95), and the plurality of first limit plates (95) are provided on the opposite ends of the plurality of locking rods (93). The plate (95) is fitted with the outer side of the protective cover (91), the outer sides of the plurality of locking rods (93) are each provided with a second limiting plate (96), and the plurality of second limiting plates (96) are respectively located between the plurality of supporting frames (92) and the plurality of first limiting plates (95), the outer sides of the plurality of locking rods (93) are each provided with a locking spring (97), one end of the plurality of locking springs (97) is each provided on the inner wall of the protective cover (91), and the other end thereof is each provided on a side of the second limiting plate (96) corresponding thereto; The tops of the plurality of locking rods (93) are each provided with an inclined groove (98); the top of the protective cover (91) is slidably provided with an extrusion plate (99) for use in conjunction with the plurality of inclined grooves (98); the bottom ends of the plurality of extrusion plates (99) are all inclined surfaces; the outer sides of the plurality of extrusion plates (99) are each provided with an extrusion spring (910); the tops of the plurality of extrusion plates (99) are provided with an extrusion ring (911); the bottom ends of the plurality of extrusion springs (910) are each provided at the top of the protective cover (91), and the other ends thereof are each provided at the bottom of the extrusion ring (911).

6. The highway roadbed gravel compaction sampling device according to claim 5, characterized in that: The bottom supporting assembly (6) comprises a triggering member (10) arranged in the sampling ring (3), and the triggering member (10) is used to generate power for supporting the bottom of the sample. A control member (11) for use with the triggering member (10) is arranged below the sampling ring (3), and the control member (11) is respectively located in a plurality of groups of cutting plates (4), and the control member (11) is used to support the bottom of the sample.

7. The highway roadbed gravel compaction sampling device according to claim 6, characterized in that: The trigger member (10) comprises a trigger plate (101) which is slidably arranged in a plurality of the telescopic grooves (73), a transmission plate (102) is arranged at the bottom of each of the trigger plates (101), the transmission plates (102) penetrate through and are slidably arranged in the sampling ring (3), the bottom ends of each of the transmission plates (102) are inclined surfaces, and the transmission plates (102) are slidably arranged in the cutting plate (4).

8. The highway roadbed gravel compaction sampling device according to claim 7, characterized in that: The control member (11) comprises control plates (111) respectively slidably arranged in the plurality of cutting plates (4); control springs (112) are arranged on opposite sides of the plurality of control plates (111); the other ends of the plurality of control springs (112) are arranged on the corresponding cutting plates (4); control grooves (113) for use in conjunction with the plurality of transmission plates (102) are provided on the tops of the plurality of control plates (111); the plurality of control grooves (113) are inclined surfaces; guide plates (114) are provided at both ends of the plurality of control plates (111); and guide grooves (115) for use in conjunction with the plurality of guide plates (114) are provided in the plurality of cutting plates (4).

9. The highway roadbed gravel compaction sampling device according to claim 8, characterized in that: A round shaft (12) is arranged on the top of the protective cover (91), a cushion block (13) is rotatably arranged on the outside of the round shaft (12), and the cushion block (13) is located below the extrusion ring (911), a torsion spring (14) is arranged on the outside of the round shaft (12), and the other end of the torsion spring (14) is arranged inside the cushion block (13).

10. A sampling method applied to the highway roadbed gravel compaction sampling device according to claim 9, characterized in that: The steps include: S1: Start the core drilling machine body to drive the drill pipe to rotate; S2: Control the drill pipe to move slowly downward, driving the cutting plate to cut the roadbed until the required depth is reached; S3: Close the core drilling machine body and control the drill pipe to rise; S4: Press the squeeze ring; S5: Pull the sampling ring to drive the sampling ring away from the drill pipe; S6: lift the synchronization board and drive the control board to reset; S7: Pour out the sample and complete sampling.

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