Soil sampling device for road detection

Abstract

The utility model provides a soil sampling device for road detection, which comprises a frame seat, a lifting mechanism arranged on the top surface of the frame seat, a screw shaft in the lifting mechanism in threaded connection with the middle of a mounting rack, a driving cylinder arranged at one end of the mounting rack, a sampling barrel upper end rotatably connected in the driving cylinder, and a driven gear arranged on a pipe body at the upper end of the sampling barrel. A top pipe opening of the sampling barrel is inserted into an evacuation pipe in the suction cup assembly, the upper end of the evacuation pipe is connected with a vacuum pump, and the vacuum pump is installed on a supporting plate at the other end of the installation frame; according to the device, the driving motor drives the sampling barrel to rotate, and the lifting mechanism is matched for up-down adjustment, so that the function of rotationally cutting a sample on a road is realized, and a road sample embedded into the road surface can be adsorbed through the suction cup assembly in the sampling barrel, so that the road sample can be taken away from the road surface along with the sampling barrel, and an operator does not need to clamp the sample through a clamp; not only is the pavement prevented from being further damaged, but also the sampling efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of road testing equipment technology, specifically to a soil sampling device for road testing. Background Technology

[0002] Road soil sampling refers to drilling cylindrical core samples of specified dimensions from the road surface using a specific sampling cylinder to obtain information on the physical properties and distribution of the road surface concrete layer, subgrade layer, and other structural elements. This information is then used for experimental analysis, evaluation, and design applications. Currently, road soil core sampling has become an indispensable and important technical method in highway engineering. The principle involves using a sampling cylinder to rotate and cut a homogeneous core sample to a certain depth from the surrounding road surface structure layer. The sample is then removed from the road surface using a clamp. However, the sample clamping stage requires manual operation by technicians, which is easily affected by the concrete thickness and the operator's experience. This process is typically time-consuming and labor-intensive, and the iron clamps can further damage the sample and the road surface, affecting the final sampling results. Therefore, a new type of sampling device is needed to address these issues. Utility Model Content

[0003] To address the aforementioned problems, this utility model proposes a soil sampling device for road testing, comprising a frame base, a lifting mechanism on the top surface of the frame base, a spiral shaft in the lifting mechanism threadedly connected to the middle of the mounting frame, a drive cylinder at one end of the mounting frame, a sampling cylinder rotatably connected to the upper end of the sampling cylinder, a driven gear on the upper end of the sampling cylinder, the driven gear meshing with the output gear of the drive motor, an evacuation tube in the suction cup assembly inserted into the top opening of the sampling cylinder, a vacuum pump connected to the upper end of the evacuation tube, and the vacuum pump mounted on a support plate at the other end of the mounting frame.

[0004] Furthermore, the lifting mechanism includes a frame, with a vertically threaded screw shaft connected to the crossbeam of the frame. The top of the screw shaft passes through the crossbeam and is connected to a turntable. The bottom of the screw shaft is rotatably connected to the top surface of the frame base. The columns on both sides of the frame are vertically slidably connected to the sliding cylinders on both sides of the mounting frame.

[0005] Furthermore, the suction cup assembly includes a negative pressure suction cup, the side of which is fitted with the inner wall of the sampling cylinder with a clearance. The top center of the negative pressure suction cup is connected to the bottom end of the evacuation tube. The upper end of the evacuation tube is connected to the input end of the vacuum pump via a telescopic spring tube. The evacuation tube is vertically slidably connected to the central hole groove of the cylinder head via a side key. The evacuation tube is locked to the side wall of the cylinder seat on the top surface of the cylinder head via positioning bolts. The cylinder head flange is connected to the threaded hole circumferentially arranged in the top through hole of the drive cylinder via bolts. The bottom surface of the cylinder head is connected to the top port of the sampling cylinder via an upper bearing.

[0006] Furthermore, the threaded hole in the bottom through hole of the drive cylinder is connected to the bearing ring cover by bolts. The bearing ring cover is connected to the sampling cylinder through the lower bearing. The sampling cylinder passes through the ring opening of the bearing ring cover and points to the frame opening on the frame seat.

[0007] Furthermore, the four corner sidewalls of the frame are connected to pulley seats by bolts, and the vertical screw holes at the four corners of the frame are threaded to threaded support rods. The upper end of the threaded support rod is connected to the lifting plate, and the lower end of the threaded support rod is connected to the support plate.

[0008] The beneficial effects of this utility model are as follows: This utility model drives the sampling cylinder to rotate via a drive motor, and then adjusts it up and down in conjunction with a lifting mechanism, realizing the function of rotary cutting samples on the road. It can also adsorb road samples embedded in the road surface through the suction cup component inside the sampling cylinder, so that the samples can be taken off the road surface along with the sampling cylinder. This eliminates the need for the operator to use clamps to pick up the samples, thus avoiding further damage to the road surface and improving sampling efficiency. The threaded support rods at the four corners of the frame can lift the pulleys in the pulley seat off the ground, ensuring the stability of the device during operation. Attached Figure Description

[0009] Figure 1 This is a front view structural diagram of the present utility model;

[0010] Figure 2 for Figure 1 A magnified view of the area circled in the center;

[0011] Figure 3 This is a side view of the structure of this utility model.

[0012] The reference numerals in the attached drawings are explained as follows: 1. Frame base; 101. Frame opening; 2. Spiral shaft; 3. Mounting bracket; 301. Drive cylinder; 302. Support plate; 303. Sliding cylinder; 4. Sampling cylinder; 401. Driven gear; 5. Drive motor; 6. Evacuation pipe; 601. Side key; 7. Vacuum pump; 8. Frame; 801. Column; 9. Turntable; 10. Negative pressure suction cup; 11. Telescopic spring tube; 12. Cylinder head; 13. Positioning bolt; 14. Upper bearing; 15. Bearing ring cover; 16. Lower bearing; 17. Pulley seat; 18. Threaded support rod; 19. Lifting plate; 20. Support plate. Detailed Implementation

[0013] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0014] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0015] The present invention will be further described below with reference to the accompanying drawings:

[0016] like Figures 1 to 3 As shown, a soil sampling device for road testing includes a frame 1. The four corner sidewalls of the frame 1 are bolted to pulley seats 17. Vertical screw holes at the four corners of the frame 1 are threaded to threaded support rods 18. The upper end of the threaded support rods 18 is connected to a lifting plate 19, and the lower end of the threaded support rods 18 is connected to a support plate 20. A lifting mechanism is provided on the top surface of the frame 1. The lifting mechanism includes a crossbeam 8. A horizontal beam of the crossbeam 8 is vertically threaded to a spiral shaft 2. The top end of the spiral shaft 2 passes through the horizontal beam and connects to a turntable 9. The bottom end of the spiral shaft 2 is rotatably connected to the top surface of the frame 1. The two side columns 801 of the crossbeam 8 are vertically slidably connected to the two side sliding cylinders 303 of the mounting frame 3. The spiral shaft 2 is threaded to the middle of the mounting frame 3. Rotating the turntable 9 can drive the mounting frame 3 to move up and down. One end of the mounting bracket 3 is equipped with a drive cylinder 301. The upper end of the sampling cylinder 4 is inserted into the drive cylinder 301. The upper end of the sampling cylinder 4 is equipped with a driven gear 401. The driven gear 401 meshes with the output gear of the drive motor 5. The drive motor 5 is installed on the outside of the drive cylinder 301.

[0017] In this embodiment, the top opening of the sampling cylinder 4 is inserted into the vacuum tube 6 in the suction cup assembly. The suction cup assembly includes a negative pressure suction cup 10, the side of which is fitted with the inner wall of the sampling cylinder 4 with a clearance. The center of the top surface of the negative pressure suction cup 10 is connected to the bottom end of the vacuum tube 6. The upper end of the vacuum tube 6 is connected to the input end of the vacuum pump 7 via a telescopic spring tube 11. The vacuum pump 7 is mounted on the support plate 302 at the other end of the mounting bracket 3. The vacuum tube 6 is vertically slidably connected to the central hole groove of the cylinder head 12 via a side key 601. The vacuum tube 6 is locked to the side wall of the cylinder seat on the top surface of the cylinder head 12 via positioning bolts 13. The flange of the cylinder head 12 is connected to the threaded hole circumferentially arranged in the top through hole of the drive cylinder 301 via bolts. The bottom surface of the cylinder head 12 is connected to the top opening of the sampling cylinder 4 via an upper bearing 14. The threaded hole in the bottom through hole of the drive cylinder 301 is connected to the bearing ring cover 15 by bolts. The bearing ring cover 15 is connected to the sampling cylinder 4 through the lower bearing 16. The sampling cylinder 4 passes through the ring opening of the bearing ring cover 15 and points to the frame opening 101 on the frame seat 1.

[0018] The working principle of this utility model is as follows:

[0019] Push the device to the target road section and rotate the four lifting plates 19 to lift the pulley seat 17 off the ground using the threaded support rod 18. Start the drive motor 5 to rotate the sampling cylinder 4. Rotate the turntable 9 to make the sampling cylinder 4 descend with the mounting frame 3 and contact the bottom surface. The high-speed rotating sampling cylinder 4 performs rotary cutting on the road surface. The cutting depth can be controlled by the turntable 9. After the road concrete layer is completely cut through, turn off the drive motor 5, loosen the positioning bolt 13 and insert the vacuum tube 6 until the negative pressure suction cup 10 is in contact with the top surface of the cut sample. Start the vacuum pump 7 to make the suction cup assembly adsorb the sample cylinder. Tighten the positioning bolt 13, rotate the turntable 9 to move the sampling cylinder 4 to the upper stop point, loosen the positioning bolt 13 again and push the suction cup assembly down to push the sample cylinder out of the sampling cylinder 4.

[0020] This invention uses a drive motor 5 to rotate the sampling cylinder 4, and a lifting mechanism to adjust it up and down, thus realizing the function of cutting samples on the road. The suction cup assembly inside the sampling cylinder 4 can adsorb the road sample embedded in the road surface, so that it can be taken away from the road surface along with the sampling cylinder 4. The operator does not need to use a clamp to pick up the sample, which not only avoids further damage to the road surface, but also improves the sampling efficiency.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A soil sampling device for road testing, comprising a frame (1), characterized in that: The top surface of the frame (1) is provided with a lifting mechanism. The spiral shaft (2) in the lifting mechanism is threadedly connected to the middle of the mounting frame (3). One end of the mounting frame (3) is provided with a drive cylinder (301). The upper end of the sampling cylinder (4) is rotatably connected inside the drive cylinder (301). The upper end of the sampling cylinder (4) is provided with a driven gear (401). The driven gear (401) meshes with the output gear of the drive motor (5). The top opening of the sampling cylinder (4) is inserted into the vacuum tube (6) in the suction cup assembly. The upper end of the vacuum tube (6) is connected to a vacuum pump (7). The vacuum pump (7) is installed on the support plate (302) at the other end of the mounting frame (3).

2. The soil sampling device for road testing according to claim 1, characterized in that: The lifting mechanism includes a frame (8), the crossbeam of the frame (8) is vertically threaded to a spiral shaft (2), the top of the spiral shaft (2) passes through the crossbeam and is connected to a turntable (9), the bottom of the spiral shaft (2) is rotatably connected to the top surface of the frame base (1), and the columns (801) on both sides of the frame (8) are vertically slidably connected to the sliding cylinders (303) on both sides of the mounting frame (3).

3. The soil sampling device for road testing according to claim 1, characterized in that: The suction cup assembly includes a negative pressure suction cup (10). The side of the negative pressure suction cup (10) is fitted with the inner wall of the sampling cylinder (4) with a clearance. The bottom end of the vacuum tube (6) is connected to the center of the top surface of the negative pressure suction cup (10). The upper end of the vacuum tube (6) is connected to the input end of the vacuum pump (7) through a telescopic spring tube (11). The vacuum tube (6) is vertically slidably connected to the center hole groove of the cylinder head (12) through a side key (601). The side wall of the cylinder seat on the top surface of the cylinder head (12) is locked with the vacuum tube (6) through a positioning bolt (13). The flange of the cylinder head (12) is connected to the threaded hole of the top through hole of the drive cylinder (301) through bolts. The bottom surface of the cylinder head (12) is connected to the top port of the sampling cylinder (4) through an upper bearing (14).

4. The soil sampling device for road testing according to claim 1, characterized in that: The threaded hole of the bottom through hole of the drive cylinder (301) is connected to the bearing ring cover (15) by bolts. The bearing ring cover (15) is connected to the sampling cylinder (4) through the lower bearing (16). The sampling cylinder (4) passes through the ring opening of the bearing ring cover (15) and points to the frame opening (101) on the frame seat (1).

5. A soil sampling device for road testing according to claim 1, characterized in that: The four corner sidewalls of the frame (1) are connected to pulley seats (17) by bolts. The vertical screw holes at the four corners of the frame (1) are connected to threaded support rods (18). The upper end of the threaded support rod (18) is connected to the lifting plate (19), and the lower end of the threaded support rod (18) is connected to the support plate (20).

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