A sampling device for detecting the compaction degree of a municipal road subgrade

Abstract

The application discloses a sampling device for municipal road subgrade compactness detection and relates to the technical field of sampling devices. The sampling device comprises a rotating table, a transfer component, a transmission assembly, a quick connection assembly, a drill bit assembly, a vibrating assembly and a connecting frame. The top of the transfer component is fixedly connected with the bottom of the rotating table. The inner wall of the rotating table is rotationally connected with the connecting frame. The transmission assembly is arranged on the connecting frame. The bottom of the transmission assembly is fixedly connected with the quick connection assembly. The bottom of the quick connection assembly is fixedly connected with the drill bit assembly. The outer wall of the drill bit assembly is fixedly connected with the vibrating assembly. The sampling device is provided with the vibrating assembly. The vibration principle and the principle of elasticity are used. In the sampling process, the mechanical vibration generated by the vibrating disc is transmitted to the main cutter through the ball impact and the action of the second top spring. The resistance of the subgrade soil to the drill bit assembly is effectively reduced. The sampling device achieves the purpose of the sampling device for municipal road subgrade compactness detection.

Description

Technical Field

[0001] This invention relates to the field of sampling device technology, specifically to a sampling device for detecting the compaction degree of municipal road subgrade. Background Technology

[0002] In municipal road construction projects, subgrade compaction is one of the key indicators for measuring road quality. Accurate testing of subgrade compaction is crucial for ensuring the stability, durability, and overall performance of the road. Sampling, as the first step in compaction testing, directly affects the reliability of subsequent test results due to its accuracy and efficiency.

[0003] Currently, in terms of sampling operations, traditional drill bit structures are usually designed in a relatively simple way, and the sample removal process is complicated and can easily damage the sample. For example, after sampling, some traditional drill bits are difficult to remove the sample completely from the drill bit, and often require the assistance of additional tools. This is not only cumbersome to operate, but may also damage the original structure of the sample, affecting the accuracy of the test results and resulting in low sampling efficiency. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a sampling device for testing the compaction degree of municipal road subgrade, solving the problem...

[0006] The problem.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention provides the following technical solution: a sampling device for testing the compaction degree of municipal road subgrade, comprising a rotating table and a transfer component. The top of the transfer component is fixedly connected to the bottom of the rotating table. An integrated component is rotatably connected to the inner wall of the rotating table via a connecting frame, and the outer wall of the connecting frame is fixedly connected to the inner wall of the rotating table. The integrated component includes a transmission assembly, the outer wall of which is rotatably connected to the outer wall of the connecting frame via a hinge. A quick-connect assembly is fixedly connected to the bottom of the transmission assembly. The integrated component is fixedly connected to a drill bit assembly, and a vibration assembly is fixedly connected to the outer wall of the drill bit assembly. The transmission assembly in the integrated component can drive the drill bit assembly to rotate and feed, thereby realizing drilling and sampling of the roadbed. The vibration assembly can generate vibration during the sampling process, improving sampling efficiency and quality. The drill bit assembly includes a main cutter, and a secondary cutter is slidably connected to the wall of the main cutter through a groove. The groove is opened in the wall of the main cutter. A pressure plate is fixedly connected to the top of the secondary cutter. A pressure ring is fixedly connected to the outer wall of the pressure plate. A baffle is fixedly connected to the outer wall of the main cutter.

[0009] Preferably, the transfer component includes a mobile platform, a counterweight is inserted into the inner wall of the mobile platform, and the counterweight is arranged in a linear array along the outer wall of the mobile platform. A fixed shell is rotatably connected to the top of the mobile platform. A pin is slidably connected to the outer wall of the fixed shell through a fixed ring, and the outer wall of the fixed ring is fixedly connected to the outer wall of the fixed shell. A first top spring is fixedly connected to the outer wall of the pin.

[0010] Preferably, the end of the first top spring away from the insertion post is fixedly connected to the top of the fixing ring, the bottom of the insertion post is inserted into the top of the moving platform through an insertion hole, and the insertion hole is opened on the top of the moving platform. The outer walls on both sides of the moving platform are fixedly connected with locking blocks, the outer walls of the locking blocks are engaged with the outer walls of the counterweight blocks, and the locking blocks are made of elastic material.

[0011] Preferably, the transmission assembly includes a flip shell, with limiting buckles fixedly connected to the outer walls on both sides of the flip shell, which cooperate with the limiting plates on the connecting frame. The limiting buckles are engaged with the limiting plates to restrict the position of the flip shell and the connecting frame. A threaded shell is threadedly connected to the inner wall of the flip shell, and a fixing frame is rotatably connected to the inner wall of the threaded shell. A column is fixedly connected to the top of the fixing frame, and a stepper motor is fixedly connected to the top of the fixing frame. A compression spring is fixedly connected to the outer wall of the top of the fixing frame. A gear frame is fixedly connected to the top of the fixing frame through a connecting plate, and the bottom of the connecting plate is fixedly connected to the top of the fixing frame. A driven wheel is rotatably connected to the inner wall of the gear frame, and a driving wheel is fixedly connected to the output end of the stepper motor.

[0012] Preferably, the outer wall of the driving wheel meshes with the outer wall of the driven wheel; the inner wall of the threaded housing is fixedly connected with internal teeth, and the internal teeth are arranged in a circular array along the central axis of the threaded housing; the outer wall of the internal teeth meshes with the outer wall of the driven wheel; the top of the connecting plate is fixedly connected to the bottom of the gear frame; the output end of the bottom of the stepper motor is fixedly connected with a rotating shaft; the outer wall of the rotating shaft is rotatably connected to the inner wall of the fixed frame; the bottom of the compression spring is fixedly connected with a limit ring; the outer wall of the limit ring is fixedly connected to the outer wall of the flipping shell; the outer wall of the flipping shell is rotatably connected to the outer wall of the connecting frame through a hinge; and the outer wall of the hinge is fixedly connected to the outer wall of the flipping shell.

[0013] Preferably, the quick-connect assembly includes a rotating shell, an insert block is inserted into the inner wall of the rotating shell through a socket, and the socket is opened in the wall of the rotating shell. A rotating ring is rotatably connected to the outer wall of the rotating shell. A groove is opened in the wall of the rotating ring to increase the friction of the hand. A stop block is fixedly connected to the inner wall of the rotating ring, and the stop blocks are arranged in a circular array along the central axis of the rotating ring. A retaining ball is fixedly connected to the top of the stop block.

[0014] Preferably, the outer wall of the ball is engaged with the inner wall of the insert block, the outer wall of the insert block is in contact with the outer wall of the stop block, the outer wall of the stop block is slidably connected to the inner wall of the rotating shell, the top of the rotating shell is fixedly connected to the bottom of the rotating shaft, and the bottom of the insert block is fixedly connected to the top of the main cutter.

[0015] Preferably, the vibration assembly includes a vibratory plate, and two sets of vibratory plates are provided. Each set of vibratory plates has a mounting seat inserted into its inner wall. A fixed seat is provided on the top of the vibratory plate. The top of the fixed seat is fixedly connected to the bottom of the fixed frame. A ball is fixedly connected to the inner wall of the fixed seat through a connecting rod. The top of the connecting rod is rotatably connected to the inner wall of the fixed seat. A second top spring is fixedly connected to the outer wall of the connecting rod.

[0016] Preferably, the end of the second top spring away from the connecting rod is fixedly connected to the bottom of the fixing frame, the bottom of the connecting rod is fixedly connected to the top of the ball, a ball groove is opened in the wall of the top of each set of vibrating plates, and the ball grooves are arranged in a circular array along the central axis of the vibrating plate, the outer wall of the ball is in contact with the outer wall of the top of the vibrating plate, the outer wall of the mounting base is fixedly connected to the outer wall of the main cutter, and the ball and the vibrating plate are both made of wear-resistant material.

[0017] (III) Beneficial Effects

[0018] This invention provides a sampling device for testing the compaction degree of municipal road subgrade. It has the following beneficial effects:

[0019] (i) The sampling device for testing the compaction degree of municipal road subgrade is equipped with a drill assembly. The secondary cutter of the drill assembly can slide in the groove of the main cutter, and the sample is pressed out by the action of the pressure plate and the pressure ring. After sampling is completed, the pressure plate is moved downward by pressing the pressure ring, which can easily press the sample out from the main cutter. Compared with the traditional sampling method, the sampling efficiency can be improved and the sample is extracted more completely.

[0020] (II) The sampling device for testing the compaction degree of municipal road subgrade, by setting up a vibration component, utilizes the principles of vibration and elasticity. During the sampling process, the mechanical vibration generated by the vibrating plate is transmitted to the main cutter through the impact of the ball and the action of the second top spring. This effectively reduces the resistance of the subgrade soil to the drill bit assembly, making it easier for the drill bit to cut into the subgrade. At the same time, the vibration helps to break up the soil, improving the quality and efficiency of sampling, especially for subgrade materials with high hardness.

[0021] (III) The sampling device for testing the compaction degree of municipal road subgrade, by setting up quick-connect components and using the mechanical locking principle, makes the locking ball and the locking groove on the inner wall of the insert block engage or disengage by rotating the rotating ring, thereby realizing the quick connection and disassembly of the drill bit assembly. This connection method is simple and quick to operate, which can shorten the time for replacing the drill bit assembly and improve work efficiency. It is especially suitable for situations where drill bits need to be replaced frequently.

[0022] (iv) The sampling device for testing the compaction degree of municipal road subgrade, by setting up a transfer component, the insertion post and the insertion hole of the transfer component cooperate, combined with the release and storage of the elastic potential energy of the first top spring, realizes the rapid fixing and movement switching of the device. Lifting the insertion post upwards can move the device, and the insertion post is automatically inserted into the insertion hole fixing device under the action of the top spring. The operation is simple and quick. This flexible positioning method enables the device to quickly reach the sampling position. Compared with the traditional fixing method, it improves the positioning efficiency and saves the sampling preparation time. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a cross-sectional view of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of the transfer component of the present invention;

[0026] Figure 4 This is a schematic diagram of the drill bit assembly of the present invention;

[0027] Figure 5 This is a schematic diagram of the transmission component of the present invention;

[0028] Figure 6 This is a schematic diagram of the structure at point A of the present invention;

[0029] Figure 7 This is a schematic diagram of the quick-connect assembly of the present invention;

[0030] Figure 8 This is a schematic diagram of the structure of the vibration component of the present invention.

[0031] In the diagram: 1. Rotary table; 2. Transfer component; 3. Integrated component; 4. Connecting frame; 5. Transmission assembly; 6. Drill bit assembly; 7. Vibration assembly; 8. Quick-connect assembly; 21. Fixed shell; 22. Fixed ring; 23. Insert post; 24. First top spring; 25. Insertion hole; 26. Counterweight; 27. Locking block; 28. Moving platform; 51. Threaded shell; 52. Limiting ring; 53. Fixing frame; 54. Flip shell; 55. Compression spring; 56. Stepper motor; 57. Rotating shaft 58. Connecting plate; 59. Internal gear; 510. Gear frame; 511. Driving wheel; 512. Driven wheel; 61. Main cutter; 62. Baffle; 63. Slide groove; 64. Pressure plate; 65. Pressure ring; 66. Secondary cutter; 71. Vibrating plate; 72. Ball groove; 73. Ball; 74. Connecting rod; 75. Second top spring; 76. Fixed seat; 77. Mounting seat; 81. Rotating shell; 82. Insert; 83. Rotating ring; 84. Stop block; 85. Ball clamp; 86. Insert block. Detailed Implementation

[0032] 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.

[0033] Please see Figure 1-8 This invention provides a technical solution: a sampling device for testing the compaction degree of municipal road subgrade, comprising a rotating table 1 and a transfer component 2. The top of the transfer component 2 is fixedly connected to the bottom of the rotating table 1. An integrated component 3 is rotatably connected to the inner wall of the rotating table 1 via a connecting frame 4, and the outer wall of the connecting frame 4 is fixedly connected to the inner wall of the rotating table 1. The integrated component 3 includes a transmission assembly 5, the outer wall of which is rotatably connected to the outer wall of the connecting frame 4 via a hinge. A quick-connect assembly 8 is fixedly connected to the bottom of the transmission assembly 5, and a drill bit assembly 6 is fixedly connected to the bottom of the quick-connect assembly 8. A vibration assembly 7 is fixedly connected to the outer wall of the drill bit assembly 6. The drill bit assembly 6 includes a main cutting... The main cutting blade 61 has a secondary cutting blade 66 slidably connected to its wall via a groove 63. The groove 63 is located within the wall of the main cutting blade 61. A pressure plate 64 is fixedly connected to the top of the secondary cutting blade 66. A pressure ring 65 is fixedly connected to the outer wall of the pressure plate 64. A baffle 62 is fixedly connected to the outer wall of the main cutting blade 61. After sampling is completed, the stepper motor 56 is rotated in the reverse direction, thereby driving the drill assembly 6 to move upward. Then, by pressing the pressure ring 65, the pressure plate 64 is moved downward, thereby pressing the sample out of the main cutting blade 61. The secondary cutting blade 66 slides in the groove 63 of the main cutting blade 61, so that the square column pressure plate 64 presses the sample vertically downward.

[0034] The transfer component 2 includes a moving platform 28, a counterweight 26 inserted into the inner wall of the moving platform 28, a fixed shell 21 rotatably connected to the top of the moving platform 28, an insertion post 23 slidably connected to the outer wall of the fixed shell 21 through a fixed ring 22, and the outer wall of the fixed ring 22 is fixedly connected to the outer wall of the fixed shell 21, a first top spring 24 is fixedly connected to the outer wall of the insertion post 23, the end of the first top spring 24 away from the insertion post 23 is fixedly connected to the top of the fixed ring 22, the bottom of the insertion post 23 is inserted into the top of the moving platform 28 through an insertion hole 25, and the insertion hole 25 is opened at the top of the moving platform 28, and locking blocks 27 are fixedly connected to the outer walls on both sides of the moving platform 28, and the outer walls of the locking blocks 27 are locked to the outer walls of the counterweight 26.

[0035] The transmission assembly 5 includes a flip-up housing 54, with a threaded housing 51 threadedly connected to the inner wall of the flip-up housing 54. A fixed frame 53 is rotatably connected to the inner wall of the threaded housing 51. A stepper motor 56 is fixedly connected to the top of the fixed frame 53. A compression spring 55 is fixedly connected to the outer wall of the top of the fixed frame 53. A gear frame 510 is fixedly connected to the top of the fixed frame 53 via a connecting plate 58, and the bottom of the connecting plate 58 is fixedly connected to the top of the fixed frame 53. A driven wheel 512 is rotatably connected to the inner wall of the gear frame 510. A driving wheel 511 is fixedly connected to the output end of the stepper motor 56. The outer wall of the driving wheel 511 meshes with the outer wall of the driven wheel 512. An internal tooth 59 is fixedly connected to the inner wall of the threaded housing 51, and the internal teeth 59 are arranged in a circular array along the central axis of the threaded housing 51. The outer wall of the internal teeth 59 meshes with the outer wall of the driven wheel 512. The top of the connecting plate 58 is fixedly connected to the bottom of the gear frame 510. The output end of the stepper motor 56 is fixedly connected to the rotating shaft 57. The outer wall of the rotating shaft 57 is rotatably connected to the inner wall of the fixed frame 53. The bottom of the compression spring 55 is fixedly connected to the limit ring 52. The outer wall of the limit ring 52 is fixedly connected to the outer wall of the flip shell 54. The outer wall of the flip shell 54 is rotatably connected to the outer wall of the connecting frame 4 through a hinge. Through the meshing of the driving wheel 511 and the driven wheel 512, the high-speed rotation of the stepper motor 56 is converted into a speed suitable for sampling operation. The threaded drive converts the rotational motion into linear motion, enabling the threaded shell 51 to move up and down, thereby driving the drill assembly 6 to perform sampling and retraction operations. At the same time, the compression spring 55 absorbs and releases energy through elastic deformation according to Hooke's law, playing a role in buffering and stabilizing.

[0036] The quick-connect assembly 8 includes a rotating shell 81. A plug 86 is inserted into the inner wall of the rotating shell 81 via a socket 82, which is located within the wall of the rotating shell 81. A rotating ring 83 is rotatably connected to the outer wall of the rotating shell 81. A stop 84 is fixedly connected to the inner wall of the rotating ring 83, and the stop 84 is arranged in a circular array along the central axis of the rotating ring 83. A retaining ball 85 is fixedly connected to the top of the stop 84. The outer wall of the retaining ball 85 engages with the inner wall of the plug 86. The outer wall of the plug 86 contacts the outer wall of the stop 84. The outer wall of the stop 84 is slidably connected to the inner wall of the rotating shell 81. The top of the rotating shell 81 is... The bottom of the rotating shaft 57 is fixedly connected, and the bottom of the insert block 86 is fixedly connected to the top of the main cutter 61. Rotating the rotating ring 83 clockwise causes the stop block 84 and the chuck ball 85 to rotate together. As the rotating ring 83 rotates, the chuck ball 85 gradually gets into the pre-set slot on the inner wall of the insert block 86, thus achieving a firm connection between the rotating shell 81 and the insert block 86, and connecting the drill assembly 6 and the transmission assembly 5 together. When it is necessary to disassemble the drill assembly 6, rotate the rotating ring 83 counterclockwise to disengage the chuck ball 85 from the slot on the inner wall of the insert block 86. At this time, the drill assembly 6 can be easily removed from the rotating shell 81.

[0037] The vibration assembly 7 includes two sets of vibrating plates 71, each with a mounting base 77 inserted into its inner wall. A fixed base 76 is mounted on the top of each vibrating plate 71, and its top is fixedly connected to the bottom of a mounting frame 53. A ball 73 is fixedly connected to the inner wall of the fixed base 76 via a connecting rod 74, with the top of the connecting rod 74 rotatably connected to the inner wall of the fixed base 76. A second top spring 75 is fixedly connected to the outer wall of the connecting rod 74, with the end of the second top spring 75 away from the connecting rod 74 fixedly connected to the bottom of the mounting frame 53. The bottom of the connecting rod 74... The top of the ball 73 is fixedly connected to the top of the vibrating plate 71. Each set of vibrating plates 71 has a ball groove 72 in the top wall, and the ball groove 72 is arranged in a circular array along the central axis of the vibrating plate 71. The outer wall of the ball 73 is in contact with the outer wall of the top of the vibrating plate 71. The outer wall of the mounting base 77 is fixedly connected to the outer wall of the main cutter 61. Because the fixing frame 53 can only move vertically downward, while the vibrating plate 71 is rotating at high speed, the ball 73 can continuously hit the ball groove 72 on the vibrating plate 71, thereby forcing the vibrating plate 71 to vibrate continuously and transmitting the vibration to the main cutter 61 through the mounting base 77.

[0038] The sampling device mainly consists of a rotating platform 1, a transfer component 2, a connecting frame 4, and an integrated component 3. The transfer component 2 is stably connected to the bottom of the rotating platform 1, providing the entire device with the functions of movement and positioning. The rotating platform 1 is rotatably connected to the integrated component 3 through the connecting frame 4. The connecting frame 4 not only serves to fix and support the integrated component 3, but also allows the integrated component 3 to rotate flexibly within a 90-degree range. As the core part of the device, the integrated component 3 integrates a transmission component 5, a quick-connect component 8, a drill bit component 6, and a vibration component 7. All components cooperate with each other to complete the sampling task.

[0039] The transfer component 2 mainly includes a moving platform 28, a counterweight 26, a fixed shell 21, a fixed ring 22, a plug 23, and a first top spring 24. The moving platform 28 serves as the carrier for moving the device and has an internal structure for inserting the counterweight 26. The fixed shell 21 is rotatably connected to the top of the moving platform 28, the fixed ring 22 is fixed to the outer wall of the fixed shell 21, the plug 23 is slidably connected to the fixed ring 22, and the outer wall of the plug 23 is connected to the first top spring 24.

[0040] Before moving the device, the center of gravity and stability of the device can be adjusted by inserting or removing counterweights 26 into the inner wall of the moving platform 28, depending on the actual condition of the roadbed and the sampling requirements. For example, on a soft roadbed, adding counterweights 26 can make the device more stable and prevent tilting during sampling. The locking blocks 27 on both sides of the moving platform 28 are engaged with the outer wall of the counterweights 26 to ensure that the counterweights 26 will not fall off during the movement of the device. When the device needs to rotate the angle of the integrated component 3, simply lift the insert 23 upwards to disengage it from the insertion hole 25. At this time, the device can be moved manually. After moving to the designated sampling position, release the tension on the insert 23. Due to its own elastic force, the first top spring 24 pushes the insert 23 downwards, so that its bottom is inserted into the insertion hole 25 at the top of the moving platform 28, thereby fixing the device.

[0041] This component mainly utilizes the principles of gravity and elasticity. The counterweight 26 increases the weight of the device, changes the center of gravity of the device, and improves the stability of the device under different roadbed conditions by using gravity. The first top spring 24, as an elastic element, stores and releases elastic potential energy to realize the self-insertion and extraction of the insertion post 23, thereby completing the switching between fixing and moving the device.

[0042] The transmission assembly 5 consists of components such as a flip shell 54, a threaded shell 51, a fixed frame 53, a stepper motor 56, a compression spring 55, a connecting plate 58, a gear frame 510, a driven wheel 512, and a driving wheel 511. The inner wall of the flip shell 54 is connected to the threaded shell 51 by a thread. The inner wall of the threaded shell 51 is rotatably connected to the fixed frame 53. The stepper motor 56 is mounted on the top of the fixed frame 53. The output end of the stepper motor 56 is connected to the driving wheel 511. The driving wheel 511 meshes with the driven wheel 512 on the inner wall of the gear frame 510. The driven wheel 512 meshes with the internal teeth 59 on the inner wall of the threaded shell 51. In addition, the top of the fixed frame 53 is connected to the gear frame 510 through the connecting plate 58. The compression spring 55 connects the fixed frame 53 and the limiting ring 52. The limiting ring 52 is fixed to the outer wall of the flip shell 54.

[0043] When sampling is required, stepper motor 56 is started. The rotor of stepper motor 56 begins to rotate, driving the drive wheel 511 at the output end to rotate synchronously. The drive wheel 511 transmits power to the driven wheel 512 through its meshing relationship, causing the driven wheel 512 to also begin to rotate. Since the driven wheel 512 meshes with the internal teeth 59 on the inner wall of the threaded shell 51, the rotation of the driven wheel 512 further drives the threaded shell 51 to rotate within the flipping shell 54. According to the principle of threaded transmission, the rotation of the threaded shell 51 is converted into its vertical linear motion within the flipping shell 54. During the movement, the fixed frame 53, the connecting plate 58, and the gear frame 510 move synchronously. The compression spring 55 plays a buffering and stabilizing role in this process. When the threaded shell 51 moves downward, the compression spring 55 is compressed and stores elastic potential energy. When the threaded shell 51 moves upward, the compression spring 55 releases elastic potential energy to offset part of the impact force and ensure the stable operation of the fixed frame 53 and internal components. The column at the top of the fixed frame 53 cooperates with the limiting ring 52 on the flip shell 54 to limit the position of the fixed frame 53 and limit the position of the stepper motor 56 through the fixed frame 53.

[0044] This component utilizes the principles of gear transmission and thread transmission. Gear transmission enables the transmission of power and the conversion of speed. Through the meshing of the driving wheel 511 and the driven wheel 512, the high-speed rotation of the stepper motor 56 is converted into a speed suitable for sampling operations. Thread transmission converts rotational motion into linear motion, enabling the threaded shell 51 to move up and down, thereby driving the drill bit assembly 6 to perform sampling and retraction operations. At the same time, the compression spring 55, based on Hooke's Law, absorbs and releases energy through elastic deformation, playing a role in buffering and stabilizing.

[0045] The quick-connect assembly 8 includes a rotating shell 81, a socket 82, a plug 86, a rotating ring 83, a stop block 84, and a retaining ball 85. The inner wall of the rotating shell 81 is provided with a socket 82, into which the plug 86 can be inserted. The outer wall of the rotating shell 81 is rotatably connected to the rotating ring 83. The inner wall of the rotating ring 83 is fixed with a plurality of stop blocks 84 arranged in a circular array along its central axis. The top of the stop block 84 is connected to the retaining ball 85.

[0046] When installing the drill bit assembly 6, align the insert block 86 with the insertion port 82 of the rotating housing 81 and insert it. Then, rotate the rotating ring 83 clockwise. The rotating ring 83 drives the stop block 84 and the retaining ball 85 to rotate together. As the rotating ring 83 rotates, the retaining ball 85 gradually engages in the pre-set slot on the inner wall of the insert block 86, achieving a firm connection between the rotating housing 81 and the insert block 86, thereby connecting the drill bit assembly 6 with the transmission assembly 5. When it is necessary to disassemble the drill bit assembly 6, rotate the rotating ring 83 counterclockwise to disengage the retaining ball 85 from the slot on the inner wall of the insert block 86. At this time, the drill bit assembly 6 can be easily removed from the rotating housing 81, completing the disassembly operation. It should be noted that before operating the quick-connect assembly 8, the rotation of the stepper motor 56 must be stopped.

[0047] This component utilizes the principle of mechanical engagement. By rotating the rotating ring 83, the ball 85 engages or disengages with the groove on the inner wall of the insert block 86, enabling quick connection and disassembly of the drill bit assembly 6. This connection method is simple and quick to operate, and can effectively improve work efficiency.

[0048] The drill bit assembly 6 consists of a main cutter 61, a secondary cutter 66, a pressure plate 64, a pressure ring 65, and a baffle 62. The secondary cutter 66 is slidably connected through a groove 63 in the wall of the main cutter 61. The pressure plate 64 and the pressure ring 65 are fixed to the top of the secondary cutter 66, and the baffle 62 is fixed to the outer wall of the main cutter 61.

[0049] When the transmission assembly 5 drives the drill assembly 6 to move downward and contact the roadbed, the main cutter 61 first cuts into the roadbed and begins the sampling operation. After the main cutter 61 cuts into a certain depth and completes the sampling work, the stepper motor 56 rotates in the opposite direction, thereby driving the drill assembly 6 to move upward. Then, by pressing the pressure ring 65, the pressure plate 64 is moved downward through the pressure ring 65, thereby pressing the sample out of the main cutter 61. The secondary cutter 66 slides in the groove 63 of the main cutter 61, so that the square column pressure plate 64 presses the sample vertically downward.

[0050] The vibration assembly 7 consists of two sets of vibrating plates 71, mounting base 77, fixing base 76, connecting rod 74, ball 73 and second top spring 75. The vibrating plate 71 is fixed to the outer wall of the main cutter 61 through the mounting base 77. The top of the fixing base 76 is connected to the bottom of the fixing frame 53. The inner wall of the fixing base 76 is rotatably connected to the ball 73 through the connecting rod 74. The outer wall of the connecting rod 74 is connected to the second top spring 75. The other end of the second top spring 75 is connected to the bottom of the fixing frame 53.

[0051] When the insert block 86 drives the main cutter 61 to rotate, and during the sampling process, the vibratory feeder 71 is fixed to the main cutter 61 by the mounting base 77, so that the main cutter 61 drives the vibratory feeder 71 to rotate synchronously. The bottom of the fixing frame 53 is fixed with a fixing seat 76, and the fixing seat 76 is connected to the ball 73 by a connecting rod 74, so that the ball 73 is located at the top of the vibratory feeder 71. Since the fixing frame 53 can only move vertically downwards, and the vibratory feeder 71 is rotating at high speed, the ball 73 can continuously hit the ball groove 72 on the vibratory feeder 71, thereby forcing the vibratory feeder to rotate. Vibration 71 continuously occurs and is transmitted to the main cutter 61 through the mounting base 77. The second top spring 75 on the connecting rod 74 continuously pushes the ball 73 against the vibrating plate 71. During the sampling process, the vibration can effectively reduce the resistance of the subgrade soil to the drill bit assembly 6, making it easier for the drill bit to cut into the subgrade and helping to break up the soil, thereby improving the quality and efficiency of sampling. This assembly uses the principles of vibration and elasticity. The vibrating plate 71 generates mechanical vibration and uses the energy of the vibration to reduce the internal friction and cohesion of the soil, thereby reducing the resistance of the drill bit cutting into the soil.

[0052] When using the municipal road subgrade compaction testing sampling device in practice, firstly, according to the specific conditions of the subgrade and the sampling location, the transfer component 2 is used to move the device to a suitable location. During the movement, the number and position of the counterweights 26 are adjusted as needed to ensure the stability of the device. After reaching the sampling location, the device is fixed by the cooperation of the insertion post 23 and the insertion hole 25.

[0053] Then, rotate the rotating table 1 to align the integrated component 3 with the sampling point, start the stepper motor 56 in the transmission component 5, and drive the drill bit assembly 6 downward to cut into the roadbed through gear transmission and thread transmission. During the cutting process, vibration is used simultaneously to reduce soil resistance and improve sampling efficiency.

[0054] After sampling is completed, the stepper motor 56 is started in reverse to remove the drill bit assembly 6 from the roadbed. If the drill bit assembly 6 needs to be replaced, the new drill bit assembly 6 can be quickly disassembled and installed by operating the quick-connect component 8, and then the above sampling operation is repeated.

[0055] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0056] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sampling device for testing the compaction degree of municipal road subgrade, comprising a rotating table (1), characterized in that, It also includes a transfer component (2), the top of which is fixedly connected to the bottom of the rotating platform (1), and the inner wall of the rotating platform (1) is rotatably connected to an integrated component (3) via a connecting frame (4), and the outer wall of the connecting frame (4) is fixedly connected to the inner wall of the rotating platform (1). The integrated component (3) includes a transmission assembly (5), the outer wall of the transmission assembly (5) is rotatably connected to the outer wall of the connecting frame (4) via a hinge, a quick-connect assembly (8) is fixedly connected to the bottom of the transmission assembly (5), a drill assembly (6) is fixedly connected to the bottom of the quick-connect assembly (8), and a vibration assembly (7) is fixedly connected to the outer wall of the drill assembly (6). The drill assembly (6) includes a main cutter (61), and a secondary cutter (66) is slidably connected to the wall of the main cutter (61) through a slide groove (63). The slide groove (63) is formed in the wall of the main cutter (61). A pressure plate (64) is fixedly connected to the top of the secondary cutter (66). A pressure ring (65) is fixedly connected to the outer wall of the pressure plate (64). A baffle (62) is fixedly connected to the outer wall of the main cutter (61). The transmission assembly (5) includes a flip shell (54), the inner wall of which is threadedly connected to a threaded shell (51), the inner wall of which is rotatably connected to a fixed frame (53), the top of which is fixedly connected to a stepper motor (56), the outer wall of which is fixedly connected to a compression spring (55), the top of which is fixedly connected to a gear frame (510) via a connecting plate (58), the bottom of which is fixedly connected to the top of which is fixedly connected to the top of which is fixedly connected to the gear frame (53), the inner wall of which is rotatably connected to a driven wheel (512), and the output end of which is fixedly connected to a driving wheel (511). The outer wall of the driving wheel (511) meshes with the outer wall of the driven wheel (512). The inner wall of the threaded shell (51) is fixedly connected with an internal tooth (59), and the internal tooth (59) is arranged in a ring array along the central axis of the threaded shell (51). The outer wall of the internal tooth (59) meshes with the outer wall of the driven wheel (512). The top of the connecting plate (58) is fixedly connected to the bottom of the gear frame (510). The output end of the stepper motor (56) is fixedly connected with a rotating shaft (57). The outer wall of the rotating shaft (57) is rotatably connected to the inner wall of the fixed frame (53). The bottom of the compression spring (55) is fixedly connected with a limit ring (52). The outer wall of the limit ring (52) is fixedly connected to the outer wall of the flip shell (54). The outer wall of the flip shell (54) is rotatably connected to the outer wall of the connecting frame (4) through a hinge. The quick-connect assembly (8) includes a rotating shell (81), and a plug (86) is inserted into the inner wall of the rotating shell (81) through a socket (82). The socket (82) is located in the wall of the rotating shell (81). A rotating ring (83) is rotatably connected to the outer wall of the rotating shell (81). A stop block (84) is fixedly connected to the inner wall of the rotating ring (83). The stop blocks (84) are arranged in a circular array along the central axis of the rotating ring (83). A retaining ball (85) is fixedly connected to the top of the stop block (84). The outer wall of the ball (85) is engaged with the inner wall of the insert (86), the outer wall of the insert (86) is in contact with the outer wall of the stop (84), the outer wall of the stop (84) is slidably connected with the inner wall of the rotating shell (81), the top of the rotating shell (81) is fixedly connected with the bottom of the rotating shaft (57), and the bottom of the insert (86) is fixedly connected with the top of the main cutter (61). The vibration assembly (7) includes a vibrating plate (71), which is provided in two sets. Each set of the vibrating plate (71) has a mounting seat (77) inserted into its inner wall. The top of the vibrating plate (71) is provided with a fixed seat (76). The top of the fixed seat (76) is fixedly connected to the bottom of the fixed frame (53). The inner wall of the fixed seat (76) is fixedly connected to a ball (73) via a connecting rod (74). The top of the connecting rod (74) is rotatably connected to the inner wall of the fixed seat (76). The outer wall of the connecting rod (74) is fixedly connected to a second top spring (75). The end of the second top spring (75) away from the connecting rod (74) is fixedly connected to the bottom of the fixing frame (53). The bottom of the connecting rod (74) is fixedly connected to the top of the ball (73). A ball groove (72) is provided in the wall of the top of each set of vibrating disks (71), and the ball grooves (72) are arranged in a circular array along the central axis of the vibrating disk (71). The outer wall of the ball (73) is in contact with the outer wall of the top of the vibrating disk (71). The outer wall of the mounting base (77) is fixedly connected to the outer wall of the main cutter (61).

2. The sampling device for detecting the compaction degree of municipal road subgrade according to claim 1, characterized in that: The transfer component (2) includes a moving platform (28), a counterweight (26) is inserted into the inner wall of the moving platform (28), a fixed shell (21) is rotatably connected to the top of the moving platform (28), and a plug (23) is slidably connected to the outer wall of the fixed shell (21) through a fixed ring (22), and the outer wall of the fixed ring (22) is fixedly connected to the outer wall of the fixed shell (21), and a first top spring (24) is fixedly connected to the outer wall of the plug (23).

3. The sampling device for detecting the compaction degree of municipal road subgrade according to claim 2, characterized in that: The end of the first top spring (24) away from the insert post (23) is fixedly connected to the top of the fixing ring (22). The bottom of the insert post (23) is inserted into the top of the moving platform (28) through the insertion hole (25), and the insertion hole (25) is opened on the top of the moving platform (28). The outer walls on both sides of the moving platform (28) are fixedly connected with the locking blocks (27), and the outer wall of the locking block (27) is locked with the outer wall of the counterweight block (26).

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