Sampling device for highway engineering supervision

Abstract

The invention discloses a sampling device for highway engineering supervision, and belongs to the field of sampling devices. The moving wheels are arranged at the bottom of the rack; the telescopic shaft is rotationally connected to the inner side of the rack; the sampling barrel is rotationally connected to the outer part of the telescopic shaft through a bearing; and the drill bit is fixedly connected to the bottom of the telescopic shaft. Through the linkage design of the ratchet wheel, the transmission wheel and the reciprocating lead screw, automatic lifting of the sampling barrel and synchronous rotation of the drill bit are achieved, and the soil sampling efficiency is improved; through cooperation of a fan-shaped frame, an inclined block and an elastic telescopic rod, automatic opening and closing of the bottom of the sampling barrel are achieved, it is guaranteed that soil enters smoothly, and leakage is prevented; the conveying blades convey the soil upwards to the collecting box, and the crushing device is combined to crush the soil, so that the tedious operation of traditional manual sampling is avoided, the sampling integrity and uniformity are improved, and the device is suitable for soil layers with different hardness.

Description

Technical Field

[0001] This application relates to the field of sampling devices, and more specifically, to a sampling device for highway engineering supervision. Background Technology

[0002] Highway construction, also known as highway engineering, refers to the surveying, measurement, design, construction, maintenance, and management of highway structures. Highway engineering structures include: roadbed, pavement, bridges, culverts, tunnels, drainage systems, safety protection facilities, landscaping and traffic monitoring facilities, as well as buildings, workshops, and other service facilities used for construction, maintenance, and monitoring.

[0003] For example, Chinese Patent Publication No. CN116358929A discloses the following technical solution: a soil sampling device and method for highway engineering, relating to the field of highway construction technology; a U-shaped frame, with a sampling sleeve inside the U-shaped frame, a circular blade fixedly installed at one end of the sampling sleeve, a uniformly distributed inclined channel fixedly installed at the end of the sampling sleeve away from the circular blade, and a collection box fixedly installed at the end of the sampling sleeve away from the circular blade, the collection box and one of the inclined channels being horizontally aligned; by driving a movable rod and a rotating shaft to rotate, the movable rod causes the sampling sleeve and the circular blade to rotate through the fixed sleeve and the fixed disc, the rotating shaft causes the sampling drill bit to rotate, and by driving the fixed disc to descend vertically, the fixed disc causes the sampling sleeve and the sampling drill bit to descend vertically. When the sampling drill bit contacts the ground, the sampling drill bit drills into the soil, and at the same time, the circular blade and the sampling sleeve simultaneously enter the soil, thus conveniently realizing automatic soil drilling and effectively improving the convenience of soil drilling.

[0004] The existing technology has the following problems: When the above-mentioned device is used to sample soil, once the drill bit and sampling tube come into contact with the soil, the soil will be transported into the collection box, making it impossible to sample the deeper soil separately. In addition, during the soil transportation process, the soil may stick to the inner wall of the sampling sleeve, which may cause different soil samples to mix. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a sampling device for highway engineering supervision, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, this application provides a sampling device for highway engineering supervision, comprising: a frame; movable wheels disposed at the bottom of the frame; a telescopic shaft rotatably connected to the inner side of the frame; a sampling cylinder rotatably connected to the outside of the telescopic shaft via a bearing; and a drill bit fixedly connected to the bottom of the telescopic shaft. The inner side of the frame is rotatably connected to a ratchet, a transmission wheel A, and a transmission wheel B. A pawl is provided on the inner side of transmission wheel A. The ratchet is fixedly sleeved on the outer wall of the telescopic shaft. A conveying blade is fixedly connected to the outer wall of the telescopic shaft. A belt is wound around the outer walls of transmission wheels A and B. A reciprocating screw is fixedly connected to the bottom of transmission wheel B. A connecting plate is threaded onto the outer wall of the reciprocating screw. One end of the connecting plate is connected to the outer wall of the sampling cylinder. A sector-shaped frame is fixedly connected inside the sampling cylinder. A sector-shaped plate is slidably connected inside the sector-shaped frame. An arc-shaped groove is formed on the inner wall of the sampling cylinder. An arc-shaped elastic telescopic rod is fixedly connected inside the arc-shaped groove. An inclined block A is fixedly connected to one end of the arc-shaped elastic telescopic rod. A limit block is fixedly connected to the bottom of the inclined block A. The bottom of the limit block is fixedly connected to the sector-shaped plate. A receiving groove is formed on the inner wall of the sampling cylinder. An inclined block B is slidably connected inside the receiving groove. A linear elastic telescopic rod is fixedly connected to the outer wall of the telescopic shaft.

[0007] Preferably, a spring is fixedly connected to the inner wall of the receiving groove, and the other end of the spring is fixedly connected to the inclined block B.

[0008] Preferably, the height of the linear elastic telescopic rod is the same as the height of the inclined block B, and the height of the limiting block is the same as the height of the inclined block B.

[0009] Preferably, a fixing box is fixedly connected to the outer wall of the sampling tube, and a collection box is fixedly connected to the bottom of the fixing box. A crushing device is provided inside the collection box.

[0010] Preferably, the inner side of the frame is equipped with a striking assembly, which includes a fixed plate A, which is fixedly connected to the inner side of the frame. The outer wall of the fixed plate A is provided with a guide groove, and the inner side of the connecting plate is provided with a movable groove. The inner wall of the movable groove is slidably connected to a rectangular frame. The inner wall of the rectangular frame is rotatably connected to a movable shaft, and the outer wall of the movable shaft is movably fitted with a swing rod. The upper and lower outer walls of the swing rod are respectively fixedly connected with a cam block and a striking block, and the outer wall of the telescopic shaft is fixedly connected with a trigger rod.

[0011] Preferably, a torsion spring is movably sleeved on the outer wall of the movable shaft, and the two ends of the torsion spring are fixedly connected to the inner wall of the rectangular frame and the swing rod, respectively.

[0012] Preferably, the trigger rod is at the same height as the cam block, the inner wall of the movable groove is provided with a sliding groove, and the movable shaft is slidably connected to the guide groove and the sliding groove.

[0013] Preferably, the outer wall of the fixed box is equipped with a feeding assembly, which includes an eccentric disc. The eccentric disc is fixedly sleeved on the outer wall of the telescopic shaft. A fixed plate B is fixedly connected to the upper end of the fixed box. A moving rod slides through the upper side of the fixed plate B. A moving block is fixedly connected to one end of the moving rod. A sliding shaft is fixedly connected to the bottom of the moving block. A movable plate is fixedly sleeved on the outer wall of the moving rod. A slot is opened on the outer wall of the movable plate. A rotating rod is rotatably connected to the inner wall of the fixed box. A feeding plate is fixedly sleeved on the outer wall of the rotating rod. One end of the rotating rod passes through the fixed box and is fixedly connected to a linkage block. A linkage shaft is fixedly connected to the outer wall of the linkage block.

[0014] Preferably, the end of the linkage shaft away from the linkage block is slidably connected inside the linkage shaft.

[0015] Preferably, the inner sides of the two sliding shafts are slidably connected to the eccentric disk.

[0016] The advantages of this application are: (1) This application realizes the automatic lifting of the sampling tube and the synchronous rotation of the drill bit by setting the linkage design of ratchet, transmission wheel and reciprocating screw, which improves the soil sampling efficiency; by using the cooperation of fan frame, inclined block and elastic telescopic rod, the bottom of the sampling tube is automatically opened and closed, ensuring that the soil enters smoothly and preventing leakage; the conveying blades convey the soil upward to the collection box, and the soil is crushed by the crushing device, avoiding the tedious operation of traditional manual sampling, improving the integrity and uniformity of sampling, and is suitable for soil layers with different hardness.

[0017] (2) Through the design of the striking component, after sampling, the contact between the trigger rod and the cam block drives the striking block to repeatedly strike the outer wall of the sampling cylinder, effectively shaking off the residual soil attached to the inner wall of the cylinder and reducing sample loss; the elastic reset function of the torsion spring ensures the continuity and stability of the striking action, avoids the incompleteness of manual cleaning, and further improves the sampling accuracy and the reliability of subsequent testing, especially suitable for sampling scenarios of cohesive soil.

[0018] (3) This application improves the soil processing efficiency of the equipment by setting up a feeding component. The eccentric disc design allows the soil to be evenly transported to the collection box after sampling via the feeding plate, avoiding soil accumulation in the fixed box, thereby improving the stability of the soil sample and the continuity of collection. This automatic feeding design reduces the complexity of manual operation, and through the precise coordination of sliding connection and linkage system, it enhances the reliability of the equipment, further improves the automation level of sampling and soil processing, and improves work efficiency and soil sampling accuracy. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial cross-sectional view of the present invention. Figure 1 ; Figure 3 This is a partial cross-sectional view of the present invention. Figure 2 ; Figure 4 This is the invention Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 This is a top view of the structure of the present invention; Figure 6 This is the invention Figure 5 Enlarged structural diagram at point B; Figure 7 This is the invention Figure 2 Enlarged structural diagram at point C.

[0020] In the above image, 1. Frame; 2. Casters; 3. Telescopic rod; 4. Sampling cylinder; 5. Drill bit; 61. Ratchet; 62. Drive wheel A; 63. Pawl; 64. Conveyor blade; 65. Belt; 66. Drive wheel B; 67. Reciprocating screw; 68. Connecting plate; 69. Sector frame; 610. Sector plate; 611. Arc groove; 612. Arc-shaped elastic telescopic rod; 613. Wedge block A; 614. Limiting block; 615. Receiving groove; 616. Wedge block B; 617. Spring; 618. Linear elastic telescopic rod; 7. Striking assembly; 71. 72. Fixed plate A; 73. Guide groove; 74. Movable groove; 75. Rectangular frame; 76. Movable shaft; 77. Swing rod; 78. Cam block; 79. Trigger rod; 710. Torsion spring; 711. Slide groove; 8. Feeding assembly; 81. Eccentric disc; 82. Fixed plate B; 83. Moving rod; 84. Moving block; 85. Slide shaft; 86. Movable plate; 87. Groove opening; 88. Rotating rod; 89. Feeding plate; 810. Linkage block; 811. Linkage shaft; 91. Fixed box; 92. Collection box; 93. Crushing device. Detailed Implementation

[0021] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative effort should fall within the scope of protection of the present application.

[0022] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be used interchangeably where appropriate for the purposes of describing embodiments of this application herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0023] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0024] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0025] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] Example 1, please refer to Figures 1-7 This embodiment provides a sampling device for highway engineering supervision, including: a frame 1; a movable wheel 2, the movable wheel 2 being disposed at the bottom of the frame 1; a telescopic shaft 3, the telescopic shaft 3 being rotatably connected to the inner side of the frame 1; a sampling cylinder 4, the sampling cylinder 4 being rotatably connected to the outside of the telescopic shaft 3 via a bearing; and a drill bit 5, the drill bit 5 being fixedly connected to the bottom of the telescopic shaft 3. A ratchet 61, a drive wheel A62, and a drive wheel B66 are rotatably connected to the inner side of the frame 1. A pawl 63 is provided on the inner side of the drive wheel A62. The ratchet 61 is fixedly sleeved on the outer wall of the telescopic shaft 3. A conveying blade 64 is fixedly connected to the outer wall of the telescopic shaft 3. A belt 65 is wound around the outer walls of the drive wheels A62 and B66. A reciprocating screw 67 is fixedly connected to the bottom of the drive wheel B66. A connecting plate 68 is threadedly connected to the outer wall of the reciprocating screw 67. One end of the connecting plate 68 is connected to the outer wall of the sampling cylinder 4. A sector frame 69 is fixedly connected inside the sampling cylinder 4. A sector plate 610 is slidably connected inside the frame 69. An arc groove 611 is provided on the inner wall of the sampling cylinder 4. An arc elastic telescopic rod 612 is fixedly connected inside the arc groove 611. An inclined block A613 is fixedly connected to one end of the arc elastic telescopic rod 612. A limit block 614 is fixedly connected to the bottom of the inclined block A613. The bottom of the limit block is fixedly connected to the sector plate 610. A receiving groove 615 is provided on the inner wall of the sampling cylinder 4. An inclined block B616 is slidably connected inside the receiving groove 615. A linear elastic telescopic rod 618 is fixedly connected to the outer wall of the telescopic shaft 3.

[0028] A spring 617 is fixedly connected to the inner wall of the receiving groove 615. The other end of the spring 617 is fixedly connected to the inclined block B616. The spring 617 can play a connecting and supporting role between the receiving groove 615 and the inclined block B616, and also provides elastic support for the movement of the inclined block B616, so that it can be displaced or adjusted to a certain extent when needed, thereby meeting specific functional requirements.

[0029] The height of the linear elastic telescopic rod 618 is the same as the height of the inclined block B616, and the height of the limiting block 614 is the same as the height of the inclined block B616.

[0030] A fixed box 91 is fixedly connected to the outer wall of the sampling tube 4, and a collection box 92 is fixedly connected to the bottom of the fixed box 91. A crushing device 93 is installed inside the collection box 92.

[0031] When using it, first start the motor connected to the upper end of frame 1, so as to... Figure 5The angle causes the motor's output end to drive the ratchet 61 to rotate counterclockwise, which in turn drives the telescopic shaft 3 to rotate. The telescopic shaft 3 then drives the drill bit 5 at the bottom, and the linear elastic telescopic rod 618 on the outer wall of the telescopic shaft 3 also rotates accordingly. At this point, after rotating a certain angle, the end of the rod furthest from the telescopic shaft 3 contacts the inclined surface of the inclined block A613, causing the linear elastic telescopic rod 618 to retract, thus not obstructing the rotation of the telescopic shaft 3. Simultaneously, the ratchet 61 drives the transmission wheel A62 itself to rotate via the pawl 63 on the inner wall of the transmission wheel A62, which in turn drives the transmission wheel A62 via the belt 65. The action causes the transmission wheel B66 to rotate, which in turn causes the reciprocating screw 67 at the bottom of the transmission wheel B66 to rotate. This causes the connecting plate 68, threaded onto its outer wall, to move downwards, which in turn causes the sampling cylinder 4 to descend. The sampling cylinder 4 then causes the telescopic shaft 3 to descend, which in turn causes the drill bit 5 to descend. Once the drill bit 5 reaches the required depth, the motor drives the ratchet 61 and the telescopic shaft 3 to rotate clockwise. The ratchet 61 does not drive the transmission wheel A62 to rotate via the pawl 63. At this time, the linear elastic telescopic rod on the outer wall of the telescopic shaft 3... After rotating within its range, 618 will come into direct contact with the inclined block A613, causing A613 to rotate. A613 will then push the arc-shaped elastic telescopic rod 612 to retract, and A613 will move the limiting block 614. When the limiting block 614 contacts the inclined block B616, it will push B616 to slide into the receiving groove 615. Once the limiting block 614 has passed B616, B616 will reset under the action of the spring 617, thus limiting the movement of the limiting block 614. When the time limit block 614 moves, it will cause the sector plate 610 to slide into the sector frame 69. When the sector plate 610 can no longer move into the sector frame 69, the spherical surface of the linear elastic telescopic rod 618 will cause it to contract, thereby passing over the inclined block A613. Then the bottom of the sampling cylinder 4 will open, and the soil can enter the interior of the sampling cylinder 4. Then the conveying blade 64 on the outer wall of the telescopic shaft 3 will convey the soil to the upper end of the sampling cylinder 4, and then it can enter the interior of the fixed box 91, fall into the interior of the collection box 92, and be crushed by the crushing device 93.

[0032] Example 2, please refer to Figures 1-7Based on Embodiment 1, a striking assembly 7 is assembled on the inner side of the frame 1. The striking assembly 7 includes a fixed plate A71, which is fixedly connected to the inner side of the frame 1. A guide groove 72 is provided on the outer wall of the fixed plate A71. A movable groove 73 is provided on the inner side of the connecting plate 68. The inner wall of the movable groove 73 is slidably connected to a rectangular frame 74. A movable shaft 75 is rotatably passed through the inner wall of the rectangular frame 74. A swing rod 76 is movably sleeved on the outer wall of the movable shaft 75. A cam block 77 and a striking block 78 are fixedly connected to the outer walls of the upper and lower ends of the swing rod 76, respectively. A trigger rod 79 is fixedly connected to the outer wall of the telescopic shaft 3.

[0033] A torsion spring 710 is movably sleeved on the outer wall of the movable shaft 75. The two ends of the torsion spring 710 are fixedly connected to the inner wall of the rectangular frame 74 and the swing rod 76, respectively. As an elastic element, one end of the torsion spring 710 is firmly fixed to the inner wall of the rectangular frame 74, while the other end is tightly connected to the swing rod 76. This design allows the torsion spring 710 to rotate freely on the outer wall of the movable shaft 75, while providing the necessary rebound force and stability to the entire structure through its elastic force.

[0034] The trigger rod 79 is at the same height as the cam block 77. The inner wall of the movable groove 73 is provided with a sliding groove 711. The movable shaft 75 is slidably connected to the guide groove 72 and the sliding groove 711. In use, when the connecting plate 68 descends, it will drive the rectangular frame 74 to descend simultaneously. As the rectangular frame 74 descends, it will drive the movable shaft 75 inside the sliding groove 711 and the guide groove 72. After descending a certain distance, the movable shaft 75 will be guided by the guide groove 72 to drive the rectangular frame 74 to slide outward inside the movable groove 73, thereby allowing the swing rod 76 to move away from the sampling cylinder 4. At this time, the trigger rod 79 on the outer wall of the telescopic shaft 3 will not contact the cam block 77 during rotation. After the soil sampling is completed; The connecting plate 68 drives the rectangular frame 74 to rise, and the movable shaft 75 slides inward along the slide groove 711 under the action of the guide groove 72, so that the swing rod 76 approaches the sampling cylinder 4. At this time, the telescopic shaft 3 drives the trigger rod 79 to rotate, and the trigger rod 79 contacts the cam block 77 and pushes it to rotate. The swing rod 76 swings around the movable shaft 75, and the striking block 78 is lifted upward accordingly, and the torsion spring 710 is deformed by force. When the trigger rod 79 disengages from the cam block 77, the torsion spring 710 returns to its original deformation, causing the swing rod 76 to return to its original position. The striking block 78 falls quickly and strikes the outer wall of the sampling cylinder 4. Through continuous striking, the soil attached to the inner wall of the sampling cylinder 4 is shaken off, avoiding soil residue from affecting the subsequent sampling accuracy.

[0035] Example 3, please refer to Figures 1-7Based on Embodiment 1, a feeding assembly 8 is assembled on the outer wall of the fixed box 91. The feeding assembly 8 includes an eccentric disc 81, which is fixedly sleeved on the outer wall of the telescopic shaft 3. A fixed plate B82 is fixedly connected to the upper end of the fixed box 91. A moving rod 83 slides through the upper side of the fixed plate B82. A moving block 84 is fixedly connected to one end of the moving rod 83. A sliding shaft 85 is fixedly connected to the bottom of the moving block 84. A movable plate 86 is fixedly sleeved on the outer wall of the moving rod 83. A slot 87 is opened on the outer wall of the movable plate 86. A rotating rod 88 is rotatably connected to the inner wall of the fixed box 91. A feeding plate 89 is fixedly sleeved on the outer wall of the rotating rod 88. One end of the rotating rod 88 passes through the fixed box 91 and is fixedly connected to a linkage block 810. A linkage shaft 811 is fixedly connected to the outer wall of the linkage block 810.

[0036] The end of the linkage shaft 811 away from the linkage block 810 is slidably connected inside the linkage shaft 811. This design not only ensures the stability of the overall structure of the linkage shaft 811, but also gives it a certain degree of flexibility so that it can play its due role in complex mechanical systems.

[0037] The inner sides of the two sliding shafts 85 are slidably connected to the eccentric disk 81. This sliding connection allows the sliding shafts 85 to slide relative to each other on the eccentric disk 81, thereby adapting to different positional requirements and ensuring the flexibility and functionality of the overall structure.

[0038] In use, when the telescopic shaft 3 rotates, it drives the eccentric disk 81 to rotate synchronously. Since the inner sides of the two sliding shafts 85 are slidably connected to the eccentric disk 81, the eccentric structure of the eccentric disk 81 will push the sliding shafts 85 to reciprocate in the horizontal direction, thereby driving the moving block 84 and the moving rod 83 to move left and right under the guidance of the fixed plate B82. The left and right movement of the moving rod 83 will cause the movable plate 86 to move synchronously. The slot 87 on the outer wall of the movable plate 86 cooperates with the linkage shaft 811. When the movable plate 86 moves, the slot 87 will drive the linkage block 810 to swing back and forth through the linkage shaft 811. The linkage block 810 will then drive the rotating rod 88 and the feeding plate 89 to rotate back and forth on the inner wall of the fixed box 91, thereby evenly transporting the soil in the fixed box 91 to the collection box 92, avoiding soil accumulation and blockage in the fixed box 91.

[0039] The above description is only a preferred embodiment 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 sampling device for highway engineering supervision, characterized by, Include: Frame; The moving wheel is arranged at the bottom of the frame; The telescopic shaft is rotatably connected to the inner side of the frame; The sampling cylinder is rotatably connected to the outside of the telescopic shaft by the bearing; The drill bit is fixedly connected to the bottom of the telescopic shaft; The inner side of the frame is rotatably connected with a ratchet wheel and a transmission wheel A and a transmission wheel B, the inner side of the transmission wheel A is provided with a pawl, the ratchet wheel is fixedly sleeved on the outer wall of the telescopic shaft, the outer wall of the telescopic shaft is fixedly connected with a conveying blade, the outer wall of the transmission wheel A and the transmission wheel B is provided with a belt, the bottom of the transmission wheel B is fixedly connected with a reciprocating screw rod, the outer wall of the reciprocating screw rod is threadedly connected with a connecting plate, one end of the connecting plate is fixedly connected with the outer wall of the sampling cylinder, the inside of the sampling cylinder is fixedly connected with a fan-shaped frame, the inside of the fan-shaped frame is slidably connected with a fan-shaped plate, the inner wall of the sampling cylinder is provided with an arc-shaped slot, the inside of the arc-shaped slot is fixedly connected with an arc-shaped elastic expansion rod, one end of the arc-shaped elastic expansion rod is fixedly connected with an inclined block A, the bottom of the inclined block A is fixedly connected with a limiting block, the bottom of the limiting block is fixedly connected with the fan-shaped plate, the inner wall of the sampling cylinder is provided with a receiving groove, the inside of the receiving groove is slidably connected with an inclined block B, the outer wall of the telescopic shaft is fixedly connected with a straight elastic expansion rod.

2. The sampling device for highway engineering supervision according to claim 1, characterized in that, The inner wall of the receiving groove is fixedly connected with a spring, the other end of the spring is fixedly connected with the inclined block B.

3. The sampling device for highway engineering supervision according to claim 1, characterized in that, The height of the straight elastic expansion rod is consistent with the height of the inclined block B, the height of the limiting block is consistent with the height of the inclined block B.

4. The sampling device for highway engineering supervision according to claim 1, characterized in that, The outer wall of the sampling cylinder is fixedly connected with a fixed box, the bottom of the fixed box is fixedly connected with a collection box, the inside of the collection box is provided with a crushing device.

5. The sampling device for highway engineering supervision according to claim 1, characterized in that, The inner side of the frame is provided with a knocking assembly, the knocking assembly comprises a fixed plate A, the fixed plate A is fixedly connected to the inner side of the frame, the outer wall of the fixed plate A is provided with a guide slot, the inner side of the connecting plate is provided with a movable slot, the inner wall of the movable slot is slidably connected with a rectangular frame, the inner wall of the rectangular frame is rotatably penetrated by a movable shaft, the outer wall of the movable shaft is movably sleeved with a swing rod, the upper and lower ends of the outer wall of the swing rod are respectively fixedly connected with a cam block and a knocking block, the outer wall of the telescopic shaft is fixedly connected with a trigger rod.

6. The sampling device for highway engineering supervision according to claim 5, characterized in that, The outer wall of the movable shaft is movably sleeved with a torsion spring, the two ends of the torsion spring are respectively fixedly connected with the inner wall of the rectangular frame and the swing rod.

7. The sampling device for highway engineering supervision according to claim 6, characterized in that, The height of the trigger rod is consistent with the height of the cam block, the inner wall of the movable slot is provided with a sliding groove, the movable shaft is slidably connected with the guide slot and the sliding groove.

8. The sampling device for highway engineering supervision according to claim 4, characterized in that, The outer wall of the fixed box is equipped with a feeding assembly, the feeding assembly comprises an eccentric disc, the eccentric disc is fixedly sleeved on the outer wall of the telescopic shaft, the upper end of the fixed box is fixedly connected with a fixed plate B, the upper side of the fixed plate B is slidably penetrated by a moving rod, one end of the moving rod is fixedly connected with a moving block, the bottom of the moving block is fixedly connected with a sliding shaft, the outer wall of the moving rod is fixedly sleeved with a movable plate, the outer wall of the movable plate is provided with a notch, the inner wall of the fixed box is rotatably connected with a rotating rod, the outer wall of the rotating rod is fixedly sleeved with a feeding plate, one end of the rotating rod penetrates through the fixed box and is fixedly connected with a linkage block, the outer wall of the linkage block is fixedly connected with a linkage shaft.

9. The sampling device for highway engineering supervision according to claim 8, characterized in that, The end of the linkage shaft away from the linkage block is slidably connected in the linkage shaft.

10. The sampling device for highway engineering supervision according to claim 9, characterized in that, The inner sides of the two sliding shafts are slidably connected with the eccentric disc.

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