On-site compaction soil sampling instrument

Abstract

The utility model discloses an on-site compaction soil sampling instrument, which relates to the field of soil sampling instruments, and comprises an outer sleeve, a soil sampling unit, an upper end cover, an inner end cover, a first rod and a handle, the soil sampling unit comprises at least one cutting ring, two ends of the outer sleeve are respectively provided with an upper through hole and a lower through hole, and the upper through hole and the lower through hole are coaxially arranged and are communicated with each other; a plurality of spiral soil discharging grooves are formed in the outer wall of the outer sleeve, a blade is arranged at the lower end of the outer sleeve, the soil taking unit is sleeved with the upper through hole, the upper end cover is detachably arranged at the end, away from the lower through hole, of the upper through hole, the soil taking unit is clamped between the upper end cover and the inner wall of the upper through hole, the upper end cover is provided with a groove, and the handle is detachably arranged at the upper end of the upper end cover. The inner end cover is slidably arranged in the groove, the first rod sequentially penetrates through the handle and the upper end cover from top to bottom, and the lower end of the first rod is fixed to the center of the upper end face of the inner end cover. The sampling soil in the cutting ring is prevented from being influenced during soil sampling.

Description

Technical Field

[0001] This utility model relates to the field of grassroots soil sampling instruments, and in particular to an instrument for measuring soil compaction on site. Background Technology

[0002] The ring cutter method is one of the commonly used methods for testing the compaction degree of earthwork. The ring cutter method is particularly suitable for testing the compaction degree of fine-grained soil. The basic principle of the ring cutter method is as follows: the surface of the earthwork to be tested is cleaned, and then a thin-walled ring cutter body is placed at the test location. A hammer is placed on top of the ring cutter body to prevent it from being hammered. The hammer is used to hammer the cover plate until the ring cutter body is completely chiseled into the earthwork. Then, the soil layer around the ring cutter body is dug out and the ring cutter body is removed. The soil at the top and bottom ends of the ring cutter body is scraped level to obtain qualified soil samples.

[0003] Existing soil sampling equipment uses an auger to drill a thin-walled cylinder into the soil. However, because the auger is located inside the thin-walled cylinder, the undisturbed soil is easily disturbed and damaged when sampling through the cylinder, preventing the soil from maintaining its original shape. This results in the auger affecting the compaction of the sampled soil, leading to inaccurate sampling.

[0004] Therefore, a field compaction sampling instrument is provided to avoid affecting the sampled soil inside the ring cutter during soil sampling. Utility Model Content

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a field compaction soil sampling instrument, comprising: an outer sleeve, a soil sampling unit, an upper end cover, an inner end cover, a first rod, and a handle. The soil sampling unit includes at least one ring cutter. The outer sleeve has an upper through hole and a lower through hole at both ends, which are coaxially arranged and interconnected. The diameter of the upper through hole is equal to the outer diameter of the ring cutter, and the diameter of the lower through hole is equal to the inner diameter of the ring cutter. The outer wall of the outer sleeve has multiple spiral soil discharge grooves. The lower end of the outer sleeve has a blade. The soil sampling unit is fitted inside the upper through hole. The upper end cover is detachably disposed at the end of the upper through hole away from the lower through hole. The soil sampling unit is sandwiched between the upper end cover and the inner wall of the upper through hole. The upper end cover has a groove. The handle is detachably disposed at the upper end of the upper end cover. The inner end cover is slidably disposed inside the groove. The first rod passes through the handle and the upper end cover from top to bottom. The lower end of the first rod is fixed at the center position of the upper surface of the inner end cover.

[0006] Preferably, the handle includes two vertical rods and at least one horizontal rod. The two vertical rods are respectively disposed through both ends of the horizontal rod. The lower end of the vertical rod is detachably disposed on the upper end cover. The vertical rod and the horizontal rod are detachably connected by set screws. The horizontal rod has a third through hole for the first rod to pass through.

[0007] Preferably, the diameter of the groove is greater than or equal to the inner diameter of the ring cutter, and the diameter of the groove is less than the outer diameter of the ring cutter.

[0008] Preferably, the upper end cover has first threaded holes at both ends of its upper end face, and the lower end of the vertical rod is threadedly connected to the first threaded holes.

[0009] Preferably, the inner end cap is cylindrical, and both ends of the upper surface of the inner end cap are provided with receiving grooves, with the lower ends of the vertical rods correspondingly disposed inside the receiving grooves.

[0010] Preferably, the inner end cap has a vent hole around the first rod.

[0011] Preferably, the outer sleeve includes a lower cylinder, an upper cylinder, and a connector. The lower end of the upper cylinder is integrally formed with a first ring, and the upper end of the lower cylinder and the lower end of the upper cylinder are both integrally formed with a second ring. The projection of the second ring along the axis of the cylinder is inside the first ring. The lower cylinder and the upper cylinder are detachably connected by the connector, and two adjacent upper cylinders are detachably connected by the connector. The connector passes through the second ring and the first ring in sequence along the radial direction of the ring cutter. The end of the connector near the axis of the cylinder abuts against the outer wall of the ring cutter.

[0012] Preferably, the upper end cover and the outer sleeve are detachably connected by screws, and the circumferential surface of the upper end cover is provided with a second threaded hole that mates with the screws.

[0013] Preferably, the connector is a countersunk pin, and the end of the connector near the axis of the cylinder is provided with an arc-shaped curved surface that fits against the outer wall of the ring cutter.

[0014] Preferably, the lower end of the ring cutter is provided with a lower cutting edge, and the upper end of the ring cutter is provided with a receiving groove for accommodating the lower cutting edge.

[0015] Preferably, the upper end of the first rod is provided with a scale line. When the lower end face of the inner end cap is coplanar with the upper end face of the uppermost ring cutter, the zero mark of the scale line is coplanar with the upper end face of the crossbar.

[0016] The beneficial effects of this invention are as follows: The inner end cap is placed on the ground. Since multiple ring cutters are fixed inside the outer sleeve, the ring cutters will rotate with the outer sleeve and drill into the soil. By rotating the outer sleeve, the soil sampling instrument is drilled into the soil. During the drilling process, the soil is discharged along the discharge groove on the outer wall of the outer sleeve. When the first rod rises relative to the crossbar to the preset position, both the outer sleeve and the ring cutters are submerged in the soil. Reversing the rotation of the outer sleeve removes it from the soil. Simultaneously, pushing the first rod allows the soil to be pushed out from inside the ring cutters through the inner end cap, facilitating the removal of the sampled soil. Attached Figure Description

[0017] The accompanying drawings further illustrate the present invention, but the embodiments in the drawings do not constitute any limitation on the present invention.

[0018] Figure 1 This is a schematic diagram of the structure of a field compaction soil sampling instrument provided in an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the outer sleeve provided in an embodiment of the present utility model;

[0020] Figure 3 This is a schematic diagram of the structure of a ring cutter provided in an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the upper end cover provided in an embodiment of the present utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the inner end cap provided in one embodiment of the present utility model.

[0023] Reference numerals: 1: Outer sleeve; 2: Soil sampling unit; 3: Upper end cap; 4: Inner end cap; 5: Handle; 6: First rod; 7: Lower through hole. Detailed Implementation

[0024] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0025] It should be noted that, in this utility model, unless otherwise stated, when an element is referred to as "fixed to" or "set on" another element, it can be directly on the other element or may have a central element present simultaneously. The directional terms used, such as "upper," "lower," "left," and "right," generally refer to... Figure 1 The directions shown are up, down, left, and right. "Inner" and "outer" refer to the inner and outer parts of the specific outline.

[0026] like Figures 1-5As shown in the figure, an embodiment of the present invention provides a field compaction soil sampling instrument, comprising: an outer sleeve 1, a sampling unit 2, an upper end cover 3, an inner end cover 4, a first rod 6, and a handle 5. The sampling unit 2 includes at least one ring cutter. The outer sleeve 1 has an upper through hole and a lower through hole 7 at both ends, which are coaxially arranged and interconnected. The diameter of the upper through hole is equal to the outer diameter of the ring cutter, and the diameter of the lower through hole 7 is equal to the inner diameter of the ring cutter. The outer wall of the outer sleeve 1 is provided with multiple spiral-shaped grooves. The soil trough has a blade at the lower end of the outer sleeve 1. The soil sampling unit 2 is fitted inside the upper through hole. The upper end cover 3 is detachably installed at the end of the upper through hole away from the lower through hole 7. The soil sampling unit 2 is sandwiched between the upper end cover 3 and the inner wall of the upper through hole. The upper end cover 3 has a groove. The handle 5 is detachably installed at the upper end of the upper end cover 3. The inner end cover 4 is slidably installed inside the groove. The first rod 6 passes through the handle 5 and the upper end cover 3 from top to bottom. The lower end of the first rod 6 is fixed at the center of the upper surface of the inner end cover 4.

[0027] The handle 5 includes two vertical rods and at least one horizontal rod. The two vertical rods are respectively installed through both ends of the horizontal rod. The lower end of the vertical rod is detachably installed on the upper end cover 3. The vertical rod and the horizontal rod are detachably connected by a set screw. The horizontal rod has a third through hole for the first rod 6 to pass through.

[0028] The diameter of the groove is greater than or equal to the inner diameter of the ring cutter, and the diameter of the groove is less than the outer diameter of the ring cutter.

[0029] The upper end cover 3 has first threaded holes at both ends of its upper end face, and the lower end of the vertical rod is threadedly connected to the first threaded holes.

[0030] The inner end cover 4 is cylindrical, and both ends of the upper surface of the inner end cover 4 are provided with receiving grooves, and the lower ends of the vertical rods are respectively set inside the receiving grooves.

[0031] The inner end cap 4 has ventilation holes around the first rod 6.

[0032] The outer sleeve 1 includes a lower cylinder, an upper cylinder, and a connector. The lower end of the upper cylinder is integrally formed with a first ring. The upper end of the lower cylinder and the lower end of the upper cylinder are both integrally formed with a second ring. The projection of the second ring along the axis of the cylinder is inside the first ring. The lower cylinder and the upper cylinder are detachably connected by the connector. Two adjacent upper cylinders are detachably connected by the connector. The connector passes through the second ring and the first ring in sequence along the radial direction of the ring cutter. The end of the connector near the axis of the cylinder abuts against the outer wall of the ring cutter.

[0033] The upper cover 3 and the outer sleeve 1 are detachably connected by screws, and the upper cover 3 has a second threaded hole on its circumferential surface that mates with the screws.

[0034] The connector is a countersunk pin, and the end of the connector near the axis of the cylinder is provided with an arc-shaped curved surface that fits against the outer wall of the ring cutter.

[0035] The lower end of the ring cutter is provided with a lower cutting edge, and the upper end of the ring cutter is provided with a receiving groove for accommodating the lower cutting edge.

[0036] The first rod 6 has a scale line on its upper end. When the lower end face of the inner end cover 4 is coplanar with the upper end face of the uppermost ring cutter, the zero mark of the scale line is coplanar with the upper end face of the crossbar.

[0037] The technical features of the embodiments described above can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these should all be considered to be within the scope of this specification.

Claims

1. A soil compaction measurement instrument, characterized in that: include: The device comprises an outer sleeve, a soil sampling unit, an upper end cap, an inner end cap, a first rod, and a handle. The soil sampling unit includes at least one ring cutter. The outer sleeve has an upper through hole and a lower through hole at both ends, which are coaxially arranged and interconnected. The diameter of the upper through hole is equal to the outer diameter of the ring cutter, and the diameter of the lower through hole is equal to the inner diameter of the ring cutter. The outer wall of the outer sleeve has multiple spiral soil discharge grooves. The lower end of the outer sleeve has a cutting edge. The soil sampling unit is fitted inside the upper through hole. The upper end cap is detachably located at the end of the upper through hole away from the lower through hole. The soil sampling unit is sandwiched between the upper end cap and the inner wall of the upper through hole. The upper end cap has a groove. The handle is detachably located at the upper end of the upper end cap. The inner end cap is slidably located inside the groove. The first rod passes through the handle and the upper end cap sequentially from top to bottom. The lower end of the first rod is fixed at the center of the upper surface of the inner end cap.

2. The on-site compaction soil sampling instrument according to claim 1, characterized in that: The handle includes two vertical rods and at least one horizontal rod. The two vertical rods are respectively installed through both ends of the horizontal rod. The lower end of the vertical rod is detachably installed on the upper end cover. The vertical rod and the horizontal rod are detachably connected by set screws. The horizontal rod has a third through hole for the first rod to pass through.

3. The on-site compaction soil sampling instrument according to claim 1, characterized in that: The diameter of the groove is greater than or equal to the inner diameter of the ring cutter, and the diameter of the groove is less than the outer diameter of the ring cutter.

4. The on-site compaction soil sampling instrument according to claim 2, characterized in that: The upper end cover has first threaded holes at both ends of its upper end face, and the lower end of the vertical rod is threadedly connected to the first threaded holes.

5. The on-site compaction soil sampling instrument according to claim 4, characterized in that: The inner end cap is cylindrical, and both ends of the upper surface of the inner end cap are provided with receiving grooves. The lower ends of the vertical rods are respectively set inside the receiving grooves.

6. The on-site compaction soil sampling instrument according to claim 1, characterized in that: The inner end cap has ventilation holes around the first rod.

7. The on-site compaction soil sampling instrument according to claim 1, characterized in that: The outer sleeve includes a lower cylinder, an upper cylinder, and a connector. The lower end of the upper cylinder is integrally formed with a first ring. The upper end of the lower cylinder and the lower end of the upper cylinder are both integrally formed with a second ring. The projection of the second ring along the axis of the cylinder is inside the first ring. The lower cylinder and the upper cylinder are detachably connected by the connector. Two adjacent upper cylinders are detachably connected by the connector. The connector passes through the second ring and the first ring in sequence along the radial direction of the ring cutter. The end of the connector near the axis of the cylinder abuts against the outer wall of the ring cutter.

8. The on-site compaction soil sampling instrument according to claim 1, characterized in that: The upper end cover and the outer sleeve are detachably connected by screws, and the circumferential surface of the upper end cover is provided with a second threaded hole that mates with the screws.

9. The on-site compaction soil sampling instrument according to claim 7, characterized in that: The connector is a countersunk pin, and one end of the connector near the axis of the cylinder has an arc-shaped curved surface that fits against the outer wall of the ring cutter.

10. The on-site compaction soil sampling instrument according to claim 5, characterized in that: The lower end of the ring cutter is provided with a lower cutting edge, and the upper end of the ring cutter is provided with a receiving groove for accommodating the lower cutting edge.

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