Sampling device for highway engineering test detection

Abstract

The invention discloses a sampling device for highway engineering test detection, and belongs to the technical field of highway engineering application, the sampling device comprises a mounting table, the surface of the mounting table is fixedly connected with two supporting rods, the upper ends of the two supporting rods are fixedly connected with a fixing plate, and the bottom of the fixing plate is provided with a transmission mechanism; the sampling device comprises a mounting table, two L-shaped plates are fixedly connected to the bottom of the mounting table, motors are fixedly connected to the surfaces of the two L-shaped plates, threaded rods penetrating through the surface of the mounting table are fixedly connected to the output ends of the two motors, the upper ends of the two threaded rods are rotationally connected with the bottom of a fixing plate, and a sampling mechanism is arranged between the two threaded rods. When the device is used and used for sampling, soil at different depths can be sampled, and samples at different depths can be independently stored, so that the situation that the samples at different depths are mutually mixed when the samples are taken out, and subsequent research and analysis on the samples are influenced is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of highway engineering application, in particular to a sampling device for highway engineering test detection. Background Art

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

[0003] Patent No.: CN113804484A, discloses a highway engineering test sampling device, which facilitates sampling of the soil of the highway engineering through the action of the set sampling mechanism, facilitates the stable removal of the sampled soil in the sampling hole, facilitates the operation of the workers, and improves the sampling efficiency. Through the action of the set guide mechanism, the movable frame is guaranteed to move stably along the guide rod, which is convenient for limiting the opposite sides of the guide cylinder, and ensures that the guide cylinder moves stably in the vertical direction.

[0004] However, during the implementation of the above scheme, the baffle is pushed by the electric push rod to slide along the inner wall of the sampling hole to take out the sampled soil in the sampling hole, so that the soil at different layers is pushed out together, resulting in the mixing of soil at different depths. The soil samples at different depths are different from each other. Since the samples are mixed together, the subsequent research and analysis of the samples by the staff is affected. Therefore, a sampling device for highway engineering test detection is proposed. Summary of the invention

[0005] The object of the present invention is to provide a sampling device for highway engineering test detection to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: A sampling device for highway engineering test detection comprises a mounting platform, wherein two support rods are fixedly connected to the surface of the mounting platform, the upper ends of the two support rods are fixedly connected to a fixing plate, a transmission mechanism is arranged at the bottom of the fixing plate, two L-shaped plates are fixedly connected to the bottom of the mounting platform, motors are fixedly connected to the surfaces of the two L-shaped plates, the output ends of the two motors are fixedly connected to threaded rods penetrating the surface of the mounting platform, the surfaces of the threaded rods are rotatably connected to the inside of the mounting platform, the upper ends of the two threaded rods are rotatably connected to the bottom of the fixing plate, and a sampling mechanism is arranged between the two threaded rods; The sampling mechanism includes a lifting cylinder, the lower end of which is conical, and the inner wall of the lifting cylinder is rotatably connected to two rows of second bevel gears arranged at equal intervals. A moving sleeve is provided inside the lifting cylinder, and the surface of the moving sleeve is slidably connected to the first bevel gears arranged at equal intervals. The surface of the first bevel gear is meshed with the surface of the second bevel gear, and a spiral groove is provided on the surface of the moving sleeve. A fixing rod is fixedly connected to the inner wall of the first bevel gear, and the fixing rod is hemispherical away from the inner wall of the first bevel gear. The surface of the fixing rod and the inner wall of the spiral groove slide with each other, and the inner wall of the second bevel gear is slidably connected to the sampling cylinder, and the surface of the sampling cylinder is slidably connected to the inside of the lifting cylinder, and a spiral groove and a fixing rod are also provided between the sampling cylinder and the second bevel gear.

[0007] As a further solution of the present invention, a movable plate is slidably connected to the surface of the lifting cylinder, the movable plate and the sampling cylinder correspond to each other, the side of the movable plate close to the sampling cylinder is an inclined surface, the surface of the movable plate is fixedly connected to a covering plate, and the surface of the covering plate is slidably connected to the interior of the lifting cylinder.

[0008] As a further solution of the present invention, an L-shaped rod is fixedly connected to the inner wall of the lifting cylinder, and the surface of the L-shaped rod is slidably connected to the inside of the first bevel gear.

[0009] As a further solution of the present invention, sliders are fixedly connected on both sides of the movable plate, the surfaces of the sliders are slidably connected to the interior of the lifting cylinder, the surface of the slider is fixedly connected to a spring, and one end of the spring away from the slider is fixedly connected to the interior of the lifting cylinder.

[0010] As a further solution of the present invention, a sample tube is placed inside the sampling barrel, and a connecting sleeve is fixedly connected to the inner wall of the sample tube. The connecting sleeve is tapered at one end away from the sample tube, and a fixing column is fixedly connected to the inner wall of the sample tube. The surface of the fixing column slides with the inner wall of the connecting sleeve.

[0011] As a further solution of the present invention, a vertical groove is provided on the surface of the fixed column, an arc groove is provided on the surface of the fixed column, one end of the arc groove is connected to the lower end of the vertical groove, a fixed block is fixedly connected to the inner wall of the connecting sleeve, and the surface of the fixed block slides with the inner walls of the vertical groove and the arc groove.

[0012] As a further scheme of the present invention, the transmission mechanism includes a lifting box, the threaded rod penetrates the surface of the lifting box and is connected to the internal thread of the lifting box, the upper end of the lifting cylinder penetrates into the interior of the lifting box and is rotatably connected to the interior of the lifting box, the internal rotation of the lifting box is connected to two pulleys, the surfaces of the two pulleys are transmission-connected with belts, one of the threaded rods is slidably connected to the inner wall of one pulley, the lifting cylinder is fixedly connected to the other pulley, the inner wall of the pulley mounted on the threaded rod is fixedly connected to a limiting strip, and the surface of the limiting strip is slidably connected to the interior of the threaded rod.

[0013] As a further solution of the present invention, spiral blades are fixedly connected to the surface of the lifting cylinder.

[0014] As a further solution of the present invention, an electric telescopic rod is fixedly connected to the surface of the fixed plate, and the output end of the electric telescopic rod passes through the surface of the fixed plate and is slidably connected to the interior of the fixed plate. The output end of the electric telescopic rod is fixedly connected to a push-pull plate, and the push-pull plate and the inner wall of the movable sleeve slide relative to each other.

[0015] As a further solution of the present invention, universal wheels are arranged at the bottom of the mounting platform, and a handrail is fixedly connected to the surface of the mounting platform.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. When the present invention is used, the device can sample soil at different depths during sampling, and the samples at different depths can be stored separately, thereby avoiding the mixing of samples at different depths when the samples are taken out, which affects the subsequent research and analysis of the samples, and ensures the purity of samples at different depths, which is convenient for subsequent research on the samples.

[0017] 2. When the present invention is used, when installing the sample tube into the sampling barrel, the staff only needs to insert the sample tube into the sampling barrel, and then slightly rotate the sample tube or the connecting sleeve to fix the sample tube in the sampling barrel. The operation is simple, which makes it convenient for the staff to install and remove the sample tube, and further improves the use effect of the device.

[0018] 3. When the present invention is used, when the threaded rod rotates, it can synchronously drive the lifting cylinder to rotate, so that the lifting cylinder can be inserted into the soil while rotating, so that the lifting cylinder can be relatively easily inserted into the soil for sampling, thereby improving the use effect of the device and is worthy of promotion.

[0019] 4. When the present invention is used, it can cover the moving path of the moving plate, thereby preventing the soil from filling the groove on the lifting cylinder after the lifting cylinder is inserted into the soil, that is, filling the moving path of the moving plate, thereby affecting the subsequent sliding of the moving plate on the surface of the lifting cylinder, thereby ensuring the orderly operation of the device and improving the use effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The present invention is a schematic diagram of the structure of a sampling device for highway engineering test and detection.

[0021] Figure 2 The bottom diagram of a sampling device for highway engineering test and inspection is shown in FIG.

[0022] Figure 3 The present invention is a schematic diagram of the structure of a transmission mechanism in a sampling device for highway engineering test and detection.

[0023] Figure 4 The present invention is a schematic diagram of the structure of a sampling mechanism in a sampling device for highway engineering test and detection.

[0024] Figure 5 A sampling device for highway engineering test and inspection Figure 4 A magnified schematic diagram of center A.

[0025] Figure 6 The figure is a schematic diagram of the interior of the first bevel gear in a sampling device for highway engineering test and detection.

[0026] Figure 7 The figure is a schematic diagram of the interior of a sampling tube in a sampling device for highway engineering test and inspection.

[0027] Figure 8 A sampling device for highway engineering test and inspection Figure 7 A magnified schematic diagram of point B in the middle.

[0028] Fig. 9 The figure is a schematic diagram of the interior of a movable sleeve in a sampling device for highway engineering test and inspection.

[0029] In the figure: 1. mounting table; 2. handrail; 3. universal wheel; 4. fixing plate; 5. support rod; 6. threaded rod; 7. transmission mechanism; 8. sampling mechanism; 9. spiral blade; 10. electric telescopic rod; 11. L-shaped plate; 12. motor; 13. push-pull plate; 701, lifting box; 702, pulley; 703, belt; 704, limiting strip; 801, lifting cylinder; 802, moving plate; 803, covering plate; 804, moving sleeve; 805, spiral groove; 806, L-shaped rod; 807, first bevel gear; 808, second bevel gear; 809, sampling cylinder; 810, fixing rod; 811, spring; 812, sliding block; 813, sample tube; 814, connecting sleeve; 815, fixing column; 816, vertical groove; 817, fixing block; 818, arc groove. DETAILED DESCRIPTION

[0030] 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.

[0031] See also Figures 1 to 3 In an embodiment of the present invention, a sampling device for highway engineering test detection includes a mounting platform 1, a universal wheel 3 is arranged at the bottom of the mounting platform 1, and a handrail 2 is fixedly connected to the surface of the mounting platform 1, and then the cooperation between the handrail 2 and the universal wheel 3 facilitates the staff to push the device to move; Two support rods 5 are fixedly connected to the surface of the mounting platform 1, and the upper ends of the two support rods 5 are fixedly connected to a fixing plate 4, and a transmission mechanism 7 is provided at the bottom of the fixing plate 4. Two L-shaped plates 11 are fixedly connected to the bottom of the mounting platform 1, and the surfaces of the two L-shaped plates 11 are fixedly connected to motors 12, and the output ends of the two motors 12 are fixedly connected to threaded rods 6 that penetrate the surface of the mounting platform 1, and the surfaces of the threaded rods 6 are rotatably connected to the inside of the mounting platform 1, and the upper ends of the two threaded rods 6 are rotatably connected to the bottom of the fixing plate 4, and a sampling mechanism 8 is provided between the two threaded rods 6; Specifically, the sampling mechanism 8 includes a lifting cylinder 801, the lower end of which is tapered, so that the lifting cylinder 801 can be inserted into the soil relatively easily, the transmission mechanism 7 includes a lifting box 701, the threaded rod 6 penetrates the surface of the lifting box 701 and is connected to the internal thread of the lifting box 701, the upper end of the lifting cylinder 801 penetrates into the interior of the lifting box 701 and is rotatably connected to the interior of the lifting box 701, the interior of the lifting box 701 is rotatably connected to two pulleys 702, the surfaces of the two pulleys 702 are transmission-connected with belts 703, a threaded rod 6 is slidably connected to the inner wall of one pulley 702, the lifting cylinder 801 is fixedly connected to the other pulley 702, so that when the threaded rod 6 rotates, it can synchronously drive the lifting cylinder 801 to rotate synchronously, so that the lifting cylinder 801 can be inserted into the soil while rotating, so that the lifting cylinder 801 can be inserted into the soil relatively easily for sampling, thereby improving the use effect of the device, which is worthy of promotion; Furthermore, the inner wall of the pulley 702 sleeved on the threaded rod 6 is fixedly connected with a limiting strip 704, and the surface of the limiting strip 704 is slidably connected with the inside of the threaded rod 6. Then, by setting the limiting strip 704, when the threaded rod 6 rotates, it can push the limiting strip 704 to drive the pulley 702 to rotate synchronously, and will not affect the sliding of the pulley 702 and the threaded rod 6, thereby ensuring the smooth operation of the device; See also Figure 1 More specifically, the surface of the lifting cylinder 801 is fixedly connected with a spiral blade 9, and through the setting of the spiral blade 9, the soil can be discharged while the lifting cylinder 801 is rotated and inserted into the soil, which further facilitates the drilling of holes on the ground by the lifting cylinder 801; See also Figures 4 to 6 The inner wall of the lifting cylinder 801 is rotatably connected with two rows of second bevel gears 808 arranged at equal distances. A moving sleeve 804 is arranged inside the lifting cylinder 801. The surface of the moving sleeve 804 is slidably connected with the first bevel gears 807 arranged at equal distances. The surface of the first bevel gear 807 is meshed with the surface of the second bevel gear 808. A spiral groove 805 is provided on the surface of the moving sleeve 804. A fixing rod 810 is fixedly connected to the inner wall of the first bevel gear 807. The inner wall of the fixing rod 810 away from the first bevel gear 807 is hemispherical. The surface of the fixing rod 810 and the inner wall of the spiral groove 805 slide against each other. Then, by setting the hemispherical end of the fixing rod 810, the friction between the fixing rod 810 and the spiral groove 805 is reduced, thereby improving the smoothness of the device when in use. Furthermore, a sampling cylinder 809 is slidably connected to the inner wall of the second bevel gear 808, and the surface of the sampling cylinder 809 is slidably connected to the inside of the lifting cylinder 801. A spiral groove 805 and a fixing rod 810 are also provided between the sampling cylinder 809 and the second bevel gear 808, so that the sampling cylinder 809 can be smoothly pushed out of the lifting cylinder 801 for sampling; The surface of the lifting cylinder 801 is slidably connected with a moving plate 802, and the moving plate 802 corresponds to the sampling cylinder 809. The side of the moving plate 802 close to the sampling cylinder 809 is an inclined surface. The surface of the moving plate 802 is fixedly connected with a covering plate 803, and the surface of the covering plate 803 is slidably connected to the inside of the lifting cylinder 801. Then, by setting the covering plate 803, the moving path of the moving plate 802 can be covered, thereby preventing the soil from filling the groove on the lifting cylinder 801 after the lifting cylinder 801 is inserted into the soil, that is, filling the moving path of the moving plate 802, thereby affecting the subsequent sliding of the moving plate 802 on the surface of the lifting cylinder 801, thereby ensuring the orderly operation of the device and improving the use effect of the device; Specifically, the movable plate 802 and the spiral blade 9 can slide against each other, and when the sampling tube 809 slides out, it is located in the gap of the spiral blade 9, thereby not affecting the smooth sampling of the sampling tube 809; An L-shaped rod 806 is fixedly connected to the inner wall of the lifting cylinder 801, and the surface of the L-shaped rod 806 is slidably connected to the inside of the first bevel gear 807, so as to fix the position of the first bevel gear 807 in the lifting cylinder 801; More specifically, both sides of the moving plate 802 are fixedly connected with sliders 812, the surfaces of the sliders 812 are slidably connected to the inside of the lifting cylinder 801, and can cooperate with the cover plate 803 to guide the movement of the moving plate 802, and the surface of the sliders 812 is fixedly connected with a spring 811, and one end of the spring 811 away from the sliders 812 is fixedly connected to the inside of the lifting cylinder 801, so as to reset the moving plate 802; Please refer to Figures 7-8 A sample tube 813 is placed inside the sampling tube 809, and a connecting sleeve 814 is fixedly connected to the inner wall of the sample tube 813. The end of the connecting sleeve 814 away from the sample tube 813 is tapered, so that the connecting sleeve 814 can be inserted into the soil more easily, thereby improving the smoothness of the device when in use; The inner wall of the sample tube 813 is fixedly connected with a fixing column 815, and the surface of the fixing column 815 slides with the inner wall of the connecting sleeve 814. A vertical groove 816 is provided on the surface of the fixing column 815, and an arc groove 818 is provided on the surface of the fixing column 815. One end of the arc groove 818 is connected with the lower end of the vertical groove 816. The inner wall of the connecting sleeve 814 is fixedly connected with a fixing block 817. The surface of the fixing block 817 slides with the inner walls of the vertical groove 816 and the arc groove 818. Then, through the setting of the fixing block 817, the vertical groove 816 and the arc groove 818, when the staff installs the sample tube 813 into the sampling barrel 809, they only need to insert the sample tube 813 into the sampling barrel 809, and then slightly rotate the sample tube 813 or the connecting sleeve 814 to fix the sample tube 813 in the sampling barrel 809. The operation is simple, which makes it convenient for the staff to install and remove the sample tube 813, and further improves the use effect of the device. Please refer to Figure 1 and Fig. 9 The surface of the fixed plate 4 is fixedly connected with an electric telescopic rod 10, the output end of the electric telescopic rod 10 penetrates the surface of the fixed plate 4 and is slidably connected with the inside of the fixed plate 4, the output end of the electric telescopic rod 10 is fixedly connected with a push-pull plate 13, the push-pull plate 13 and the inner wall of the movable sleeve 804 slide with each other, and in the initial state of the device, the push-pull plate 13 and the inner bottom wall of the movable sleeve 804 are in contact with each other; Specifically, when sampling, the threaded rod 6 is driven to rotate, thereby driving the pulley 702 and the lifting cylinder 801 to rotate synchronously. At the same time, the rotation of the threaded rod 6 drives the lifting box 701 to descend, thereby driving the lifting cylinder 801 to rotate and descend at the same time, thereby drilling a hole on the ground. At the same time, the push-pull plate 13 and the inner wall of the movable sleeve 804 slide against each other. When the drilling depth of the lifting cylinder 801 is sufficient, the electric telescopic rod 10 is started to make the push-pull plate 13 push the movable sleeve 804, thereby driving the movable sleeve 804 to descend in the lifting cylinder 801. At the same time, the inner wall of the spiral groove 805 pushes the surface of the fixed rod 810, thereby driving the first bevel gear 807 to rotate, and driving the second bevel gear 808 to rotate through the meshing connection. At the same time, since the spiral groove 805 and the fixed rod 810 are also provided between the second bevel gear 808 and the sampling cylinder 809, the second bevel gear 808 drives the sampling cylinder 809 to slide in the lifting cylinder 801 while rotating, thereby The inclined surface of the movable plate 802 is pushed to make the movable plate 802 slide on the surface of the lifting cylinder 801 and stretch the spring 811. The movement of the movable plate 802 enables the sampling cylinder 809 to be smoothly pushed out of the lifting cylinder 801 and then inserted into the soil at different depths to sample the soil. After the sampling is completed, the push-pull plate 13 is raised in the movable sleeve 804 and the inner top wall of the movable sleeve 804 is pushed to retract the sampling cylinder 809 into the lifting cylinder 801 again. Then, the staff can pull the lifting cylinder 801 out of the soil and take out the sample tube 813 in the sampling cylinder 809 to obtain soil samples of different depths. Therefore, the device can sample soil of different depths when sampling, and the samples of different depths can be stored separately, thereby avoiding the mixing of samples of different depths when taking out, which affects the subsequent research and analysis of the samples, ensuring the purity of samples of different depths, and facilitating the subsequent research on the samples.

[0032] The working principle of the present invention is: The threaded rod 6 is driven to rotate, thereby driving the pulley 702 and the lifting cylinder 801 to rotate synchronously. At the same time, the rotation of the threaded rod 6 drives the lifting box 701 to descend, thereby driving the lifting cylinder 801 to rotate and descend at the same time, thereby drilling a hole on the ground. At the same time, the push-pull plate 13 and the inner wall of the movable sleeve 804 slide against each other. When the drilling depth of the lifting cylinder 801 is sufficient, the electric telescopic rod 10 is started to make the push-pull plate 13 push the movable sleeve 804, thereby driving the movable sleeve 804 to descend in the lifting cylinder 801. At the same time, the inner wall of the spiral groove 805 pushes the surface of the fixed rod 810, thereby driving the first bevel gear 8 07 rotates, and drives the second bevel gear 808 to rotate through the meshing connection. At the same time, since the spiral groove 805 and the fixing rod 810 are also provided between the second bevel gear 808 and the sampling tube 809, the second bevel gear 808 drives the sampling tube 809 to slide in the lifting tube 801 while rotating, and then pushes the inclined surface of the moving plate 802, so that the moving plate 802 slides on the surface of the lifting tube 801, and stretches the spring 811. The movement of the moving plate 802 enables the sampling tube 809 to be smoothly pushed out of the lifting tube 801, and then inserted into the soil at different depths to sample the soil.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A sampling device for highway engineering test and detection, comprising a mounting platform (1), characterized in that: The surface of the mounting platform (1) is fixedly connected to two support rods (5), the upper ends of the two support rods (5) are fixedly connected to a fixing plate (4), the bottom of the fixing plate (4) is provided with a transmission mechanism (7), the bottom of the mounting platform (1) is fixedly connected to two L-shaped plates (11), the surfaces of the two L-shaped plates (11) are fixedly connected to motors (12), the output ends of the two motors (12) are fixedly connected to threaded rods (6) that penetrate the surface of the mounting platform (1), the surfaces of the threaded rods (6) are rotatably connected to the inside of the mounting platform (1), the upper ends of the two threaded rods (6) are rotatably connected to the bottom of the fixing plate (4), and a sampling mechanism (8) is provided between the two threaded rods (6); The sampling mechanism (8) comprises a lifting cylinder (801), the lower end of the lifting cylinder (801) is conical, the inner wall of the lifting cylinder (801) is rotatably connected to two rows of second bevel gears (808) arranged at equal intervals, a moving sleeve (804) is arranged inside the lifting cylinder (801), the surface of the moving sleeve (804) is slidably connected to first bevel gears (807) arranged at equal intervals, the surface of the first bevel gear (807) is meshingly connected to the surface of the second bevel gear (808), and the surface of the moving sleeve (804) is provided with a spiral groove (805). A fixing rod (810) is fixedly connected to the inner wall of the first bevel gear (807); the fixing rod (810) is hemispherical and away from the inner wall of the first bevel gear (807); the surface of the fixing rod (810) and the inner wall of the spiral groove (805) slide on each other; a sampling tube (809) is slidably connected to the inner wall of the second bevel gear (808); the surface of the sampling tube (809) is slidably connected to the inside of the lifting tube (801); and a spiral groove (805) and a fixing rod (810) are also provided between the sampling tube (809) and the second bevel gear (808).

2. A sampling device for highway engineering test and detection according to claim 1, characterized in that: The surface of the lifting cylinder (801) is slidably connected to a moving plate (802), the moving plate (802) and the sampling cylinder (809) correspond to each other, the side of the moving plate (802) close to the sampling cylinder (809) is an inclined surface, the surface of the moving plate (802) is fixedly connected to a covering plate (803), and the surface of the covering plate (803) is slidably connected to the inside of the lifting cylinder (801).

3. A sampling device for highway engineering test and detection according to claim 2, characterized in that: An L-shaped rod (806) is fixedly connected to the inner wall of the lifting cylinder (801), and the surface of the L-shaped rod (806) is slidably connected to the inside of the first bevel gear (807).

4. A sampling device for highway engineering test and detection according to claim 3, characterized in that: Both sides of the movable plate (802) are fixedly connected with sliders (812), the surfaces of the sliders (812) are slidably connected to the inside of the lifting cylinder (801), the surface of the sliders (812) is fixedly connected with a spring (811), and one end of the spring (811) away from the sliders (812) is fixedly connected to the inside of the lifting cylinder (801).

5. A sampling device for highway engineering test and detection according to claim 4, characterized in that: A sample tube (813) is placed inside the sampling cylinder (809), and a connecting sleeve (814) is fixedly connected to the inner wall of the sample tube (813), and the end of the connecting sleeve (814) away from the sample tube (813) is tapered, and a fixing column (815) is fixedly connected to the inner wall of the sample tube (813), and the surface of the fixing column (815) and the inner wall of the connecting sleeve (814) slide against each other.

6. A sampling device for highway engineering test and detection according to claim 5, characterized in that: A vertical groove (816) is formed on the surface of the fixing column (815), an arc-shaped groove (818) is formed on the surface of the fixing column (815), one end of the arc-shaped groove (818) is communicated with the lower end of the vertical groove (816), a fixing block (817) is fixedly connected to the inner wall of the connecting sleeve (814), and the surface of the fixing block (817) slides with the inner walls of the vertical groove (816) and the arc-shaped groove (818).

7. A sampling device for highway engineering test and detection according to claim 6, characterized in that: The transmission mechanism (7) comprises a lifting box (701), the threaded rod (6) passes through the surface of the lifting box (701) and is threadedly connected to the inside of the lifting box (701), the upper end of the lifting cylinder (801) passes through the inside of the lifting box (701) and is rotatably connected to the inside of the lifting box (701), the inside of the lifting box (701) is rotatably connected to two pulleys (702), the surfaces of the two pulleys (702) are transmission-connected with belts (703), one of the threaded rods (6) is slidably connected to the inner wall of one pulley (702), the lifting cylinder (801) is fixedly connected to the other pulley (702), the inner wall of the pulley (702) sleeved on the threaded rod (6) is fixedly connected to a limiting strip (704), and the surface of the limiting strip (704) is slidably connected to the inside of the threaded rod (6).

8. A sampling device for highway engineering test and detection according to claim 7, characterized in that: A spiral blade (9) is fixedly connected to the surface of the lifting cylinder (801).

9. A sampling device for highway engineering test and detection according to claim 8, characterized in that: The surface of the fixed plate (4) is fixedly connected to an electric telescopic rod (10), the output end of the electric telescopic rod (10) passes through the surface of the fixed plate (4) and is slidably connected to the interior of the fixed plate (4), the output end of the electric telescopic rod (10) is fixedly connected to a push-pull plate (13), and the push-pull plate (13) and the inner wall of the movable sleeve (804) slide relative to each other.

10. A sampling device for highway engineering test and detection according to claim 9, characterized in that: Universal wheels (3) are provided at the bottom of the mounting platform (1), and a handrail (2) is fixedly connected to the surface of the mounting platform (1).

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