On-site soil sampling device for municipal road construction

Abstract

The present invention relates to the field of soil sampling technology, specifically to a field soil sampling device for municipal road construction, comprising a gantry bracket, the right bottom end of the gantry bracket is fixedly connected to an electric telescopic rod, the movable end of the electric telescopic rod is fixedly connected to a connecting plate, the left bottom end of the gantry bracket and the bottom surface of the connecting plate are both hinged with a cross bottom plate; a downward movement mechanism is installed between the two arms of the gantry bracket, a detection box is installed on the downward movement mechanism, a leveling feedback mechanism is installed inside the detection box, the leveling feedback mechanism includes a feedback rod and two pressure sensors, the feedback rod is hinged on the inner top surface of the detection box, and the bottom end of the feedback rod is fixedly connected to a counterweight. In this field soil sampling device for municipal road construction, when the rectangular sampling tube is retracted, the soil inside the rectangular sampling tube is prone to breakage with the external soil, which can prevent the soil inside the rectangular sampling tube from falling out of the rectangular sampling tube.

Description

Technical Field

[0001] The invention relates to the technical field of soil sampling, in particular to an on-site soil material sampling device for municipal road construction. Background Art

[0002] During the municipal road construction process, soil is the main material for building the roadbed and base, and its physical, chemical and mechanical properties are directly related to the safety, stability and durability of the road structure. Therefore, municipal road construction soil sampling and testing is an important part of ensuring the quality of the project. Through comprehensive and meticulous testing, we can accurately grasp the various properties of the soil and provide a scientific basis for road design, construction and later maintenance.

[0003] The traditional method of soil sampling in municipal road construction is to align the sampling tube vertically with the soil and press the sampling tube so that the sampling tube is inserted into the soil to a certain depth. The soil will then enter the sampling tube and the sampling tube is then pulled up to complete the soil sampling. When the adhesion between the soil is relatively strong, the soil sample may fall out of the sampling tube.

[0004] In order to solve the above problems, we have made improvements and proposed an on-site soil sampling device for municipal road construction. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] The present invention provides an on-site soil sampling device for municipal road construction, comprising a gantry bracket, a right bottom end of the gantry bracket is fixedly connected to an electric telescopic rod, a movable end of the electric telescopic rod is fixedly connected to a connecting plate, and a cross bottom plate is hingedly connected to the left bottom end of the gantry bracket and the bottom surface of the connecting plate;

[0007] A downward movement mechanism is installed between the two arms of the gantry bracket, a detection box is installed on the downward movement mechanism, a leveling feedback mechanism is installed inside the detection box, and the leveling feedback mechanism includes a feedback rod and two pressure sensors, the feedback rod is hinged to the inner top surface of the detection box, a counterweight is fixedly connected to the bottom end of the feedback rod, and the two pressure sensors are symmetrically installed on both sides of the feedback rod and contact the side of the feedback rod;

[0008] The bottom surface of the detection box is fixedly connected with a movable plate, and the bottom surface of the movable plate is rotatably connected with a soil drilling tube. Two guide rods are fixedly connected to the inner wall of the lower part of the soil drilling tube, and a rectangular sampling tube is slidably connected to the two guide rods. A negative pressure mechanism is installed inside the rectangular sampling tube, and the negative pressure mechanism includes a piston plate, and the piston plate is slidably connected to the inside of the rectangular sampling tube. A concave plate is fixedly connected to the right side of the piston plate, and an L-shaped plate is fixedly connected to the right side of the concave plate, and the L-shaped plate is slidably connected to the right side of the rectangular sampling tube. The inner bottom surface of the soil drilling tube is fixedly connected with a limit plate, and a rectangular hole for the rectangular sampling tube to extend is opened at the lower part of the soil drilling tube;

[0009] A driving motor is fixedly installed on the bottom surface of the movable plate, the output shaft of the driving motor is coaxially fixedly connected to a rotating rod, the bottom end of the rotating rod is coaxially fixedly connected to a disc, and the bottom surface of the disc is fixedly connected to a sliding column;

[0010] A straight slot is fixedly connected to the top surface of the rectangular sampling tube, and the sliding column is slidably connected to the straight slot;

[0011] A through hole is provided at the center of the piston plate, two limit rods are fixedly connected between the side surface of the piston plate and the concave plate, the outer wall of the limit rod is slidably connected with the same sealing plate, and a return spring is sleeved on the outer wall of the limit rod located between the sealing plate and the concave plate;

[0012] A partition is fixedly connected to the inner upper part of the drilling tube, the rotating rod is rotatably connected to the partition, a ratchet is coaxially fixedly connected to the outer wall of the rotating rod, a plurality of spring rods are fixedly connected to a circular array on the bottom surface of the partition, a chamfer is provided at the movable end of the spring rod, and the movable end of the spring rod can be engaged with the ratchet.

[0013] As a preferred technical solution of the present invention, through holes are opened at four ends of the cross bottom plate, positioning screws are passed through the through holes of the cross bottom plate, and the top end of the positioning screws is coaxially fixedly connected with a hand wheel.

[0014] As a preferred technical solution of the present invention, the downward movement mechanism includes a bidirectional threaded rod, and two displacement blocks that are in sliding contact with the inner top surface of the gantry bracket are symmetrically threadedly connected on the outer wall of the bidirectional threaded rod, and the bottom surface of the displacement block is hinged with a connecting rod, and the other end of the connecting rod is symmetrically hinged on the top surface of the detection box;

[0015] A reduction motor is fixedly mounted on the side of the gantry bracket, and an output shaft of the reduction motor is coaxially fixedly connected with the bidirectional threaded rod.

[0016] As a preferred technical solution of the present invention, both arms of the gantry bracket are provided with sliding grooves, a sliding rod is fixedly connected between the inner top surface and the inner bottom surface of the sliding groove, connecting ears are slidably connected to the outer walls of the two sliding rods, and the connecting ears are integrally connected to the side of the movable plate.

[0017] As a preferred technical solution of the present invention, a fixing rod is symmetrically fixedly connected to the inner top surface of the detection box, and the pressure sensor is fixedly installed on the bottom end of the fixing rod, and the pressure sensor is electrically connected to an external controller.

[0018] The beneficial effects of the present invention are:

[0019] 1. This type of on-site soil sampling device for municipal road construction, during the extension of the rectangular sampling tube, the limit plate will resist the L-shaped plate, the piston plate and the rectangular sampling tube will move relative to each other, the piston plate moves to the right, and the air pressure between the soil inside the rectangular sampling tube and the piston plate becomes smaller. After the rectangular sampling tube reaches the maximum position, the air pressure between the soil inside the rectangular sampling tube and the piston plate is the smallest. When the rectangular sampling tube is retracted, the soil inside the rectangular sampling tube and the external soil are easily broken, which can prevent the soil inside the rectangular sampling tube from falling out of the rectangular sampling tube.

[0020] 2. For this type of on-site soil sampling device for municipal road construction, when the land is uneven, first turn on the leveling function through the external controller. The feedback rod inside the detection box tends to rotate, and the feedback rod will apply pressure to the pressure sensor on the right. The external controller will control the electric telescopic rod to extend to achieve leveling, so that the drilling tube is vertically aligned with the land. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 It is a three-dimensional schematic diagram of an on-site soil material sampling device for municipal road construction according to the present invention;

[0023] Figure 2 It is a top view schematic diagram of an on-site soil sampling device for municipal road construction according to the present invention;

[0024] Figure 3 It is a front view schematic diagram of an on-site soil material sampling device for municipal road construction of the present invention;

[0025] Figure 4 The invention is a field soil sampling device for municipal road construction. Figure 2 AA section view in FIG.

[0026] Figure 5It is a cross-sectional schematic diagram of a detection box of an on-site soil material sampling device for municipal road construction according to the present invention;

[0027] Figure 6 It is a schematic diagram of the clamping connection between the ratchet and the spring rod of an on-site soil sampling device for municipal road construction of the present invention;

[0028] Figure 7 The invention is a field soil sampling device for municipal road construction. Figure 4 A is an enlarged schematic diagram;

[0029] Figure 8 It is a three-dimensional schematic diagram of a rectangular sampling tube of an on-site soil material sampling device for municipal road construction according to the present invention;

[0030] Fig. 9 It is a schematic diagram of the tilt of a portal bracket of a field soil sampling device for municipal road construction according to the present invention;

[0031] Fig.10 It is a schematic diagram of a door-type bracket of a field soil sampling device for municipal road construction after leveling according to the present invention;

[0032] In the figure: 1. gantry bracket; 2. cross bottom plate; 3. electric telescopic rod; 4. connecting plate; 5. positioning screw; 6. detection box; 7. movable plate; 8. sliding rod; 9. feedback rod; 10. pressure sensor; 11. counterweight block; 12. two-way threaded rod; 13. displacement block; 14. connecting rod; 15. soil drilling tube; 16. guide rod; 17. rectangular sampling tube; 18. piston plate; 19. concave plate; 20. L-shaped plate; 21. limit plate; 22. rotating rod; 23. disc; 24. sliding column; 25. straight slot; 26. limit rod; 27. sealing plate; 28. partition; 29. ​​ratchet; 30. spring rod. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0034] Example: Figure 1 As shown, a soil sampling device for on-site municipal road construction includes a gantry bracket 1, a right bottom end of the gantry bracket 1 is fixedly connected to an electric telescopic rod 3, a movable end of the electric telescopic rod 3 is fixedly connected to a connecting plate 4, and a cross bottom plate 2 is hingedly connected to the left bottom end of the gantry bracket 1 and the bottom surface of the connecting plate 4;

[0035] like Figure 5As shown, a downward movement mechanism is installed between the two arms of the gantry bracket 1, a detection box 6 is installed on the downward movement mechanism, a leveling feedback mechanism is installed inside the detection box 6, and the leveling feedback mechanism includes a feedback rod 9 and two pressure sensors 10. The feedback rod 9 is hinged to the inner top surface of the detection box 6, and a counterweight block 11 is fixedly connected to the bottom end of the feedback rod 9. The two pressure sensors 10 are symmetrically installed on both sides of the feedback rod 9 and contact the side surfaces of the feedback rod 9.

[0036] A fixing rod is symmetrically fixedly connected to the inner top surface of the detection box 6, and a pressure sensor 10 is fixedly installed on the bottom end of the fixing rod. The pressure sensor 10 is electrically connected to an external controller.

[0037] Through holes are formed at the four ends of the cross bottom plate 2 , positioning screws 5 are passed through the through holes of the cross bottom plate 2 , and a hand wheel is coaxially fixedly connected to the top end of the positioning screws 5 .

[0038] like Figure 5 , Fig. 9 and Fig.10 As shown, the sampling device is placed on the ground. When the ground is uneven, the leveling function is first turned on through the external controller. The feedback rod 9 inside the detection box 6 tends to rotate. The feedback rod 9 will apply pressure to the pressure sensor 10 on the right, and the external controller will control the electric telescopic rod 3 to extend to achieve leveling, so that the drilling tube 15 is vertically aligned with the ground. After the leveling is completed, the leveling function is turned off through the external controller, and the positioning screw 5 is rotated by the hand wheel to fix the sampling device on the ground.

[0039] The downward movement mechanism includes a bidirectional threaded rod 12, on the outer wall of which are symmetrically threadedly connected two displacement blocks 13 in sliding contact with the inner top surface of the gantry bracket 1, and the bottom surface of the displacement block 13 is hinged with a connecting rod 14, and the other end of the connecting rod 14 is symmetrically hinged to the top surface of the detection box 6;

[0040] A reduction motor is fixedly mounted on the side of the portal bracket 1 , and the output shaft of the reduction motor is coaxially fixedly connected to the bidirectional threaded rod 12 .

[0041] Both arms of the gantry bracket 1 are provided with a slide groove, a slide rod 8 is fixedly connected between the inner top surface and the inner bottom surface of the slide groove, and connecting ears are slidably connected to the outer walls of the two slide rods 8, and the connecting ears are integrally connected to the side of the movable plate 7.

[0042] A partition 28 is fixedly connected to the inner upper part of the drilling tube 15, and the rotating rod 22 is rotatably connected to the partition 28. A ratchet 29 is coaxially fixedly connected to the outer wall of the rotating rod 22. A plurality of spring rods 30 are fixedly connected to the bottom surface of the partition 28 in a circular array. The movable end of the spring rod 30 is chamfered and can be engaged with the ratchet 29.

[0043] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the reduction motor and the driving motor are electrically connected to the external controller. The reduction motor is started by the external controller, and the reduction motor drives the bidirectional threaded rod 12 to rotate, driving the two displacement blocks 13 to approach each other, so that the angle of the connecting rod 14 changes, and the movable plate 7 and the detection box 6 move downward accordingly. The movable plate 7 will move downward along the sliding rod 8 to press the soil drilling tube 15 into the soil;

[0044] like Figure 6 As shown, at the same time, the external controller controls the drive motor to start, and the drive motor drives the rotating rod 22 to rotate counterclockwise. The ratchet 29 on the rotating rod 22 rotates synchronously with the soil drilling tube 15 under the clamping action of the spring rod 30, so that the soil drilling tube 15 is pressed into the soil, and a drill bit is installed at the bottom of the soil drilling tube 15. It should be noted that the disc 23 and the rectangular sampling tube 17 will also rotate synchronously with the soil drilling tube 15. During the synchronous rotation of the disc 23 and the rectangular sampling tube 17, the position of the sliding column 24 in the straight slot 25 will not change.

[0045] A movable plate 7 is fixedly connected to the bottom surface of the detection box 6, and a drilling tube 15 is rotatably connected to the bottom surface of the movable plate 7. Two guide rods 16 are fixedly connected to the lower inner wall of the drilling tube 15, and a rectangular sampling tube 17 is slidably connected to the two guide rods 16. A rectangular hole is opened at the bottom of the drilling tube 15 for the rectangular sampling tube 17 to extend out.

[0046] A driving motor is fixedly mounted on the bottom surface of the movable plate 7, the output shaft of the driving motor is coaxially fixedly connected to a rotating rod 22, the bottom end of the rotating rod 22 is coaxially fixedly connected to a disc 23, and the bottom surface of the disc 23 is fixedly connected to a sliding column 24;

[0047] A straight slot 25 is fixedly connected to the top surface of the rectangular sampling tube 17 , and the sliding column 24 is slidably connected to the straight slot 25 .

[0048] like Figure 6 and Figure 8 As shown, after the soil drilling tube 15 reaches the specified depth, the external controller controls the driving motor, and the driving motor controls the rotating rod 22 to rotate clockwise. The ratchet 29 on the rotating rod 22 will not be clamped by the spring rod 30, and the soil drilling tube 15 will not rotate under the friction between it and the soil. The rotating rod 22 will rotate relative to the soil drilling tube 15, and the rotating rod 22 drives the disc 23 to rotate. The disc 23 cooperates with the straight slot 25 through the sliding column 24, driving the rectangular sampling tube 17 to extend to the outside of the soil drilling tube 15, squeezing the soil into the rectangular sampling tube 17, completing the soil sampling and storing it in the soil drilling tube 15.

[0049] A negative pressure mechanism is installed inside the rectangular sampling tube 17, and the negative pressure mechanism includes a piston plate 18, which is slidably connected to the inside of the rectangular sampling tube 17. A concave plate 19 is fixedly connected to the right side of the piston plate 18, and an L-shaped plate 20 is fixedly connected to the right side of the concave plate 19. The L-shaped plate 20 is slidably connected to the right side of the rectangular sampling tube 17, and a limiting plate 21 is fixedly connected to the inner bottom surface of the drilling tube 15.

[0050] A through hole is provided at the center of the piston plate 18, and two limit rods 26 are fixedly connected between the side surface of the piston plate 18 and the concave plate 19. The outer wall of the limit rod 26 is slidably connected to the same sealing plate 27, and a reset spring is sleeved on the outer wall of the limit rod 26 located between the sealing plate 27 and the concave plate 19. When the soil enters the rectangular sampling cylinder 17, the air inside the rectangular sampling cylinder 17 will overcome the elastic force of the reset spring and push the sealing plate 27, so that the air inside the rectangular sampling cylinder 17 can be discharged from the through hole of the piston plate 18 and enter the internal space of the rectangular sampling cylinder 17 located on the right side of the piston plate 18, so that the soil can enter the rectangular sampling cylinder 17 easily. When the piston plate 18 and the rectangular sampling cylinder 17 move relative to each other, the reset spring will return the sealing plate 27 to its original position.

[0051] like Figure 7 As shown, during the extension of the rectangular sampling tube 17, the limit plate 21 will contact the L-shaped plate 20, the piston plate 18 and the rectangular sampling tube 17 will move relative to each other, the piston plate 18 moves to the right, and the air pressure between the soil inside the rectangular sampling tube 17 and the piston plate 18 becomes smaller. After the rectangular sampling tube 17 reaches the maximum position, the air pressure between the soil inside the rectangular sampling tube 17 and the piston plate 18 is the smallest. Under the action of the external atmospheric pressure, the soil entering the rectangular sampling tube 17 is sucked. When the rectangular sampling tube 17 is further retracted, the soil inside the rectangular sampling tube 17 and the external soil are more likely to break. After the break occurs, the rectangular sampling tube 17 is retracted, and the soil inside the rectangular sampling tube 17 will not be extracted, thereby preventing the soil inside the rectangular sampling tube 17 from falling out of the rectangular sampling tube 17.

[0052] It should be noted that the on-site soil sampling device for municipal road construction is suitable for sampling soft soil layers.

[0053] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A soil sampling device for on-site municipal road construction, comprising a gantry support (1), characterized in that: The right bottom end of the gantry bracket (1) is fixedly connected to an electric telescopic rod (3), the movable end of the electric telescopic rod (3) is fixedly connected to a connecting plate (4), and the left bottom end of the gantry bracket (1) and the bottom surface of the connecting plate (4) are both hingedly connected to a cross bottom plate (2); A downward movement mechanism is installed between the two arms of the gantry bracket (1), a detection box (6) is installed on the downward movement mechanism, a leveling feedback mechanism is installed inside the detection box (6), and the leveling feedback mechanism includes a feedback rod (9) and two pressure sensors (10), the feedback rod (9) is hinged to the inner top surface of the detection box (6), a counterweight block (11) is fixedly connected to the bottom end of the feedback rod (9), and the two pressure sensors (10) are symmetrically installed on both sides of the feedback rod (9) and are in contact with the side surfaces of the feedback rod (9); The bottom surface of the detection box (6) is fixedly connected to a movable plate (7), the bottom surface of the movable plate (7) is rotatably connected to a soil drilling tube (15), two guide rods (16) are fixedly connected to the inner wall of the lower part of the soil drilling tube (15), and a rectangular sampling tube (17) is slidably connected to the two guide rods (16), and a negative pressure mechanism is installed inside the rectangular sampling tube (17), and the negative pressure mechanism comprises a piston plate (18), and the piston plate (18) is slidably connected to the inside of the rectangular sampling tube (17), and the right side of the piston plate (18) is fixedly connected to a concave plate (19), and the right side of the concave plate (19) is fixedly connected to an L-shaped plate (20), and the L-shaped plate (20) is slidably connected to the right side of the rectangular sampling tube (17), and the inner bottom surface of the soil drilling tube (15) is fixedly connected to a limiting plate (21), and the lower part of the soil drilling tube (15) is provided with a rectangular hole for the rectangular sampling tube (17) to extend out; A driving motor is fixedly mounted on the bottom surface of the movable plate (7); the output shaft of the driving motor is coaxially fixedly connected to a rotating rod (22); the bottom end of the rotating rod (22) is coaxially fixedly connected to a circular disc (23); and the bottom surface of the circular disc (23) is fixedly connected to a sliding column (24); A straight slot (25) is fixedly connected to the top surface of the rectangular sampling tube (17), and the sliding column (24) is slidably connected to the straight slot (25); A through hole is provided at the center of the piston plate (18); two limit rods (26) are fixedly connected between the side surface of the piston plate (18) and the concave plate (19); the outer wall of the limit rod (26) is slidably connected to the same sealing plate (27); and a return spring is sleeved on the outer wall of the limit rod (26) located between the sealing plate (27) and the concave plate (19); A partition plate (28) is fixedly connected to the inner upper portion of the soil drilling tube (15); the rotating rod (22) is rotatably connected to the partition plate (28); a ratchet (29) is coaxially fixedly connected to the outer wall of the rotating rod (22); a plurality of spring rods (30) are fixedly connected in a circular array on the bottom surface of the partition plate (28); a chamfer is provided at a movable end of the spring rod (30); and the movable end of the spring rod (30) can be engaged with the ratchet (29).

2. The on-site soil sampling device for municipal road construction according to claim 1 is characterized in that: Through holes are provided at the four ends of the cross bottom plate (2), positioning screws (5) are passed through the through holes of the cross bottom plate (2), and a hand wheel is coaxially fixedly connected to the top end of the positioning screws (5).

3. The on-site soil sampling device for municipal road construction according to claim 1 is characterized in that: The downward movement mechanism comprises a bidirectional threaded rod (12), the outer wall of the bidirectional threaded rod (12) being symmetrically threaded with two displacement blocks (13) in sliding contact with the inner top surface of the gantry bracket (1), the bottom surface of the displacement block (13) being hinged with a connecting rod (14), the other end of the connecting rod (14) being symmetrically hinged to the top surface of the detection box (6); A reduction motor is fixedly mounted on the side of the portal bracket (1), and the output shaft of the reduction motor is coaxially fixedly connected to the bidirectional threaded rod (12).

4. The on-site soil sampling device for municipal road construction according to claim 1 is characterized in that: Both arms of the door-type bracket (1) are provided with a slide groove, a slide rod (8) is fixedly connected between the inner top surface and the inner bottom surface of the slide groove, and connecting ears are slidably connected on the outer walls of the two slide rods (8), and the connecting ears are integrally connected to the side of the movable plate (7).

5. The on-site soil sampling device for municipal road construction according to claim 1 is characterized in that: A fixing rod is symmetrically fixedly connected to the inner top surface of the detection box (6), and the pressure sensor (10) is fixedly mounted on the bottom end of the fixing rod. The pressure sensor (10) is electrically connected to an external controller.

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