A soil sampling device for detecting the compaction degree of earthwork in hydraulic engineering

Abstract

This invention relates to a soil sampling device for testing the compaction degree of earthwork in water conservancy projects. The invention addresses the problem of ring cutter misalignment during slope sampling, which reduces the accuracy of compaction degree testing results. This invention facilitates compaction degree sampling on slopes. When sampling earthwork on a slope, three conical nails are first driven into the soil surface, forming a tripod-like stable support between the frame and the three nails, preventing swaying during sampling. After adjusting the angle between the guide sleeve and the frame, a hammer is used to strike a hammering pad, causing the hammer rod, hammer seat, and ring cutter to advance together onto the slope. During this advance, the hammer seat provides axial and circumferential positioning for the ring cutter, preventing misalignment during impact, thus reducing disturbance to the soil and improving the accuracy of slope compaction degree testing results. This invention belongs to the field of earthwork compaction degree testing technology.

Description

Technical Field

[0001] This utility model relates to a soil sampling device, specifically a soil sampling device for testing the compaction degree of earthwork in water conservancy projects, belonging to the field of earthwork compaction testing technology. Background Technology

[0002] When water conservancy embankment projects are being managed or reconstructed, the original slopes need to be heightened and thickened. If the slope compaction is insufficient, abnormal pore water pressure will be generated under the influence of rainfall, resulting in uneven settlement or landslides on the slope, which will eventually lead to soil erosion and slope collapse. Therefore, it is necessary to test the soil compaction on the slope.

[0003] The ring cutter method for determining compaction is widely used in engineering sites due to its simple operation. However, the ring cutter method is usually used on flat earthworks, requiring the ring cutter to be driven vertically into the soil to reduce detection errors. However, when workers drive the ring cutter into the soil on slopes, the inconvenience of operation inevitably leads to ring cutter deviation, which in turn causes greater disturbance to the soil during soil sampling on the slope, reducing the accuracy of slope compaction test results.

[0004] In summary, how to propose a novel soil compaction sampling device to address the aforementioned technical problems has become a pressing issue for those skilled in the art. Utility Model Content

[0005] This invention addresses the shortcomings of the prior art by providing a soil sampling device for testing the compaction degree of earthwork in water conservancy projects.

[0006] The technical solution of this utility model is: a soil sampling device for testing the compaction degree of earthwork in water conservancy projects, including a frame, adjusting screws, hammer rods, ring cutters, guide sleeves, and two lead screws.

[0007] The frame is equipped with a level bubble and an angle adjustment plate. The lower surfaces of the frame and the lead screw are fixed with tapered nails, and the three tapered nails are arranged in an isosceles triangle.

[0008] The lead screw runs through the frame, and two adjusting nuts are mounted on the lead screw, with the two adjusting nuts respectively located on the upper and lower surfaces of the frame.

[0009] The angle adjustment plate has concentrically arranged arc-shaped slide rails and through holes; the guide sleeve is integrally provided with a pin, which is hinged to the through hole, and the adjustment screw passes through the arc-shaped slide rail and is screwed onto the guide sleeve.

[0010] The hammer rod is slidably connected to the guide sleeve, and the end of the hammer rod is coaxially fixed to the hammer seat, with the ring cutter coaxially embedded in the hammer seat.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] 1. This utility model brings convenience to the compaction sampling work on the slope. When taking soil from the earthwork on the slope, three conical nails 200 are first driven into the soil surface of the slope, so that the frame 100 and the three conical nails 200 form a stable support similar to a tripod, so as to avoid shaking during the sampling process.

[0013] After adjusting the angle between the guide sleeve 800 and the frame 100, the hammer is used to strike the hammer pad 620, causing the hammer rod 600, hammer seat 610 and ring cutter 700 to feed together toward the slope. During the feeding process, the hammer seat 610 can provide axial and circumferential positioning for the ring cutter 700, preventing it from deviating during the hammering process, thereby reducing the disturbance to the soil and improving the accuracy of the slope compaction test results. Attached Figure Description

[0014] Figure 1 This is an isometric drawing of this utility model;

[0015] Figure 2 yes Figure 1 A magnified view of section I in the image;

[0016] Figure 3 This is a cross-sectional view of the hammer seat 610 and the ring cutter 700 in this utility model;

[0017] Figure 4 This is a schematic diagram of the method for taking soil from a slope according to this utility model.

[0018] In the diagram: 100, frame; 110, first frame; 120, second frame; 130, third frame; 200, tapered nail; 300, lead screw; 310, adjusting nut; 400, spirit level; 500, angle adjusting plate; 510, arc-shaped slide rail; 520, through hole; 530, adjusting screw; 600, hammer rod; 610, hammer seat; 611, inspection hole; 620, hammer pad; 700, ring cutter; 800, guide sleeve. Detailed Implementation

[0019] To make the invention objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0020] Specific implementation method one: Combining Figures 1 to 4 This embodiment describes a soil sampling device for testing the compaction degree of earthwork in a water conservancy project, which includes a frame 100, an adjusting screw 530, a hammer rod 600, a ring cutter 700, a guide sleeve 800, and two lead screws 300.

[0021] A level bubble 400 and an angle adjustment plate 500 are installed on the frame 100. Tapered nails 200 are fixed to the lower surfaces of the frame 100 and the lead screw 300. The three tapered nails 200 are arranged in an isosceles triangle. This arrangement makes it easy for the present invention to be driven into the soil surface and form a stable support.

[0022] The lead screw 300 passes through the frame 100. Two adjusting nuts 310 are mounted on the lead screw 300, and the two adjusting nuts 310 are respectively arranged on the upper and lower surfaces of the frame 100.

[0023] The angle adjustment plate 500 has concentrically arranged arc-shaped slide rails 510 and through holes 520, and the angle adjustment plate 500 is provided with scale.

[0024] The guide sleeve 800 is integrally equipped with a pin and a scale alignment line. The pin is hinged to the through hole 520. The included angle between the guide sleeve 800 and the frame 100 is identified by the scale alignment line and the scale of the angle adjustment plate 500. The adjusting screw 530 passes through the arc-shaped slide rail 510 and is screwed onto the guide sleeve 800.

[0025] The hammer rod 600 is slidably connected to the guide sleeve 800, and the end of the hammer rod 600 is coaxially fixed to the hammer seat 610. The ring cutter 700 is coaxially embedded in the hammer seat 610.

[0026] Specific Implementation Method Two: Combining Figures 1 to 4 This embodiment describes a rack 100 that includes a first frame 110, a second frame 120, and two third frames 130.

[0027] Both third frames 130 are vertically fixed to the first frame 110, and the two ends of the second frame 120 are fixed to one of the third frames 130 respectively. The horizontal bubble 400 is installed on the first frame 110.

[0028] The guide sleeve 800 is arranged between the two third frames 130, and the angle adjustment plate 500 is installed on the third frame 130.

[0029] The lower surface of the second frame 120 is fixed with a tapered nail 200, and two lead screws 300 are respectively arranged at both ends of the first frame 110.

[0030] The other components and connections are the same as in Specific Implementation Method 1.

[0031] Specific implementation method three: Combining Figures 1 to 4 In this embodiment, the hammer base 610 has a viewing hole 611. This setting facilitates observation of whether the soil fills the ring cutter 700, ensuring that a soil sample of a certain volume is obtained.

[0032] Furthermore, a hammering pad 620 is installed at the end of the hammering rod 600, and the hammering pad 620 and the hammering seat 610 are respectively arranged at both ends of the hammering rod 600.

[0033] Furthermore, the axial height of the hammer base 610 is less than the axial height of the ring cutter 700, and the end face of the hammer base 610 facing the ring cutter 700 is provided with an annular cutting edge. This arrangement facilitates the hammer base 610 to enter the soil on the slope under external impact.

[0034] The other components and connections are the same as in specific implementation method one or two.

[0035] Working principle

[0036] Combination Figures 1 to 4 To explain the working principle of this utility model, the following steps should be followed when taking soil from a slope:

[0037] Step 1: When sampling soil on a slope, first drive three conical nails 200 into the soil surface of the slope to form a stable support similar to a tripod between the frame 100 and the three conical nails 200; then adjust the position of the adjusting nut 310 on the lead screw 300 so that the bubble in the level bubble 400 is located at the center of the level bubble 400 to ensure that the frame 100 is level.

[0038] Step 2: Adjust the angle between the guide sleeve 800 and the frame 100 according to the slope ratio of the construction site. For example, if the slope ratio is 1:1.5, the corresponding slope angle β is... Adjust the included angle between the guide sleeve 800 and the frame 100 to 90°-β, at which point the hammer rod 600 remains perpendicular to the slope.

[0039] Step 3: Place the ring cutter 700 on the slope, with the end face of its cutting edge abutting against the slope, and the other end face coaxially embedded in the hammer seat 610.

[0040] Step 4: Strike the hammer pad 620 with a hammer several times to make the hammer rod 600, hammer seat 610 and ring cutter 700 feed together toward the slope. During the feeding process, the hammer seat 610 can provide axial and circumferential positioning for the ring cutter 700 to prevent it from deviating during the hammering process.

[0041] Step 5: Observe through the viewing hole 611 whether the ring cutter 700 is full of soil sample. If the soil sample overflows from the upper end face of the ring cutter 700, pull out the hammer rod 600 along the axis of the guide sleeve 800. The ring cutter 700 will remain in the slope. Remove the utility model, dig out the ring cutter 700 with a shovel, and then use a knife to flatten the excess soil on both ends of the ring cutter 700. This completes the soil sampling work for slope compaction testing.

[0042] The present invention has been disclosed above with reference to preferred embodiments, but it is not intended to limit the present invention. Any simple modifications, equivalent changes and alterations made by those skilled in the art to the above embodiments without departing from the technical solution of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A soil sampling device for detecting the compaction degree of earthwork in hydraulic engineering, characterized in that: it comprises a frame (100), an adjusting screw (530), a hammering rod (600), a cutting ring (700), a guide sleeve (800) and two lead screws (300); the frame (100) is provided with a level bubble (400) and an angle adjusting plate (500), and the lower surfaces of the frame (100) and the lead screws (300) are fixedly connected with three conical nails (200) arranged in an isosceles triangle; the lead screws (300) penetrate through the frame (100), and two adjusting nuts (310) are arranged on the lead screws (300) and located on the upper and lower surfaces of the frame (100) respectively; the angle adjusting plate (500) is provided with an arc-shaped sliding rail (510) and a through hole (520) arranged concentrically; the guide sleeve (800) is integrally provided with a pin shaft hinged to the through hole (520), and the adjusting screw (530) penetrates through the arc-shaped sliding rail (510) and is screwed on the guide sleeve (800); the hammering rod (600) is slidingly connected with the guide sleeve (800), and the end of the hammering rod (600) is coaxially fixedly connected with a hammering seat (610), and the cutting ring (700) is coaxially embedded in the hammering seat (610). The frame (100) comprises a first frame body (110), a second frame body (120) and two third frame bodies (130); the two third frame bodies (130) are perpendicularly fixedly connected with the first frame body (110), and the two ends of the second frame body (120) are fixedly connected with one third frame body (130) respectively; the guide sleeve (800) is arranged between the two third frame bodies (130), and the angle adjusting plate (500) is mounted on the third frame body (130); the lower surface of the second frame body (120) is fixedly connected with the conical nail (200), and the two lead screws (300) are arranged at the two ends of the first frame body (110) respectively. The level bubble (400) is mounted on the first frame body (110). The end of the hammering rod (600) is provided with a hammering pad (620), and the hammering pad (620) and the hammering seat (610) are arranged at the two ends of the hammering rod (600) respectively. The hammering seat (610) is provided with a peephole (611). The axial height of the hammering seat (610) is less than the axial height of the cutting ring (700), and the end face of the hammering seat (610) facing the cutting ring (700) is provided with an annular cutting edge. The angle adjusting plate (500) is provided with a scale.

2. The soil sampling device for detecting earthwork compaction degree of hydraulic engineering according to claim 1, characterized in that: ​ ​ ​ ​ 3. The soil sampling device for detecting earthwork compaction degree of hydraulic engineering according to claim 2, characterized in that: ​ 4. The soil sampling device for detecting earthwork compaction degree of hydraulic engineering according to claim 3, characterized in that: ​ 5. The soil sampling device for detecting earthwork compaction degree of hydraulic engineering according to claim 4, characterized in that: ​ 6. The soil sampling device for detecting earthwork compaction degree of hydraulic engineering according to claim 5, characterized in that: ​ 7. The soil sampling device for detecting earthwork compaction degree of hydraulic engineering according to claim 6, characterized in that: ​

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