Soil collector

Abstract

The utility model provides a soil collector which comprises a handle rod, a sampling tool bit, a sampling push plate and an extrusion mechanism, the upper end of the sampling tool bit is fixedly connected with the handle rod, and the sampling push plate is movably arranged in an inner cavity of the sampling tool bit in the central axis direction of the sampling tool bit; the sampling tool bit is inserted into to-be-collected soil, so that a to-be-detected soil sample enters an inner cavity of the sampling tool bit; the extrusion mechanism is used for driving the sampling push plate to move along the central axis direction of the sampling tool bit under the action of external force so as to integrally push out the to-be-detected soil sample collected in the inner cavity of the sampling tool bit. The cutting edge of the sampling tool bit can be quickly inserted into the soil by a preset depth, and the collected soil sample is integrally reserved in the inner cavity of the sampling tool bit, so that the collected soil sample can keep the original soil structure and porosity, and meanwhile, the collected soil sample can be completely and quickly pushed out through the extrusion mechanism and the sampling push plate; and the soil structure and porosity of the collected soil sample are not damaged.

Description

Technical Field

[0001] The utility model relates to the field of wetland protection equipment, in particular to a soil collector. Background Art

[0002] The purpose of collecting soil samples from swamp wetlands is to study the soil structure, porosity, and microbial changes of the soil at the bottom of the wetland. At present, ordinary ring knives are generally used to collect wetland soil samples. However, seasonal swamp wetlands have a certain water depth in the flood season, the wetland soil has a high water content, the soil samples are very sticky, and the underground plant roots are intertwined. Ordinary ring knives do not have an effective length, and it is difficult to insert ordinary ring knives into the deep soil, and it is impossible to sample soil samples at the predetermined depth; at the same time, due to the high viscosity of the soil samples, the collected soil samples need to be taken out of the ring knife with other tools, which will destroy the original soil structure and porosity, making subsequent testing work unable to be carried out accurately. In the dry season, the soil compaction is high, and it is still difficult to collect wetland soil samples using ordinary ring knives. Utility Model Content

[0003] The main purpose of the utility model is to provide a soil collector, so as to at least solve the problems in the prior art that ordinary ring cutters do not have an effective length, are difficult to insert deep into the soil for collection when collecting seasonal swamp wetland soil samples, and destroy the structure and porosity of the original soil, making it impossible to accurately carry out subsequent detection work.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a soil collector, comprising: a handle rod; a sampling knife head, the sampling knife head is a cylindrical structure with a closed upper end and an open lower end, the upper end of the sampling knife head is fixedly connected to the lower end of the handle rod, and the lower end of the sampling knife head has an annular blade; a sampling push plate, the sampling push plate is a circular plate-shaped structure and the diameter of the sampling push plate matches the inner diameter of the sampling knife head, the central axis of the sampling push plate is colinear with the central axis of the sampling knife head and the sampling push plate is movably arranged in the inner cavity of the sampling knife head along the central axis direction of the sampling knife head; an extrusion mechanism is arranged outside the upper end of the sampling knife head and connected to the sampling push plate; wherein the handle rod is used to insert the sampling knife head into the soil to be collected under the action of an external force so that the soil sample to be tested enters the inner cavity of the sampling knife head; the extrusion mechanism is used to drive the sampling push plate to move along the central axis direction of the sampling knife head under the action of an external force so as to push out the soil sample to be tested collected by the inner cavity of the sampling knife head as a whole.

[0005] Furthermore, a plurality of sliding holes are provided on the top plate of the sampling cutter head; the extrusion mechanism comprises: a connecting slide rod, a plurality of connecting slide rods, the lower ends of the plurality of connecting slide rods correspondingly pass through the plurality of sliding holes and extend to the inner cavity of the sampling cutter head and are fixedly connected to the sampling push plate; a push ring, which can be slidably mounted on the outer wall of the handle rod, and the push ring is fixedly connected to the upper ends of the plurality of connecting slide rods; wherein the push ring is used to drive the sampling push plate to move along the central axis direction of the sampling cutter head through the plurality of connecting slide rods under the action of external force.

[0006] Furthermore, there are four sliding holes and four connecting sliding rods, and the four sliding holes are evenly spaced along the circumference of the sampling cutter head.

[0007] Furthermore, the extrusion mechanism also includes: an extrusion spring, which is sleeved on the outer wall of the handle rod, the upper end of the extrusion spring is fixedly connected to the push ring, and the lower end of the extrusion spring is fixedly connected to the top plate of the sampling knife head; wherein, when the push ring moves toward the sampling knife head under the action of external force, it pushes the sampling push plate to move downward and compresses the extrusion spring, and when there is no external force, the push ring is lifted up by the rebound force of the extrusion spring to drive the sampling push plate to return to its original position.

[0008] Furthermore, the handle rod includes: an inner rod body, the lower end of which is fixedly connected to the upper end of the sampling blade; an outer cylinder body, which is slidably mounted on the outside of the inner rod body along the axial direction of the inner rod body; an adjustment mechanism, which is arranged at the upper end of the outer cylinder body and connected to the inner rod body; wherein the adjustment mechanism is used to drive the inner rod body to extend and retract along the central axis direction of the outer cylinder body to lengthen or shorten the length of the handle rod.

[0009] Furthermore, a limiting slide groove extending in a square shape along its length is provided on the outer side wall of the inner rod body, and a limiting protrusion matching the limiting slide groove is provided on the inner side wall of the outer cylinder body; wherein the limiting protrusion can be slidably embedded in the limiting slide groove.

[0010] Furthermore, there are multiple limiting grooves and multiple limiting protrusions, the multiple limiting grooves are evenly spaced along the circumference of the outer wall of the inner rod body, and the multiple limiting protrusions are evenly spaced along the circumference of the inner wall of the outer cylinder body; wherein the multiple limiting protrusions are embedded in the multiple limiting grooves one by one.

[0011] Furthermore, an adjusting screw hole extending inward along its axial direction is provided at the top end of the inner rod body, and a rotation limit hole is provided at the upper end of the outer cylinder body. The adjusting mechanism includes: an adjusting screw, which can rotatably pass through the limit sliding hole, and the lower end of the adjusting screw is cooperatively connected with the adjusting screw hole; an adjusting knob, which is fixedly mounted on the upper end of the adjusting screw; wherein the adjusting knob drives the adjusting screw to rotate under the action of external force to drive the inner rod body to telescope along the central axis direction of the outer cylinder body.

[0012] The soil collector of the utility model technical solution comprises a handle bar, a sampling cutter head, a sampling push plate and an extrusion mechanism. The sampling cutter head is a cylindrical structure with a closed upper end and an open lower end. The upper end of the sampling cutter head is fixedly connected to the lower end of the handle bar, and the lower end of the sampling cutter head has an annular blade; the sampling push plate is a circular plate-shaped structure and the diameter of the sampling push plate matches the inner diameter of the sampling cutter head. The central axis of the sampling push plate is colinear with the central axis of the sampling cutter head and the sampling push plate is movably arranged in the inner cavity of the sampling cutter head along the central axis direction of the sampling cutter head; the extrusion mechanism is arranged outside the upper end of the sampling cutter head and connected to the sampling push plate; the handle bar is used to insert the sampling cutter head into the soil to be collected under the action of external force so that the soil sample to be tested enters the inner cavity of the sampling cutter head; the extrusion mechanism is used to drive the sampling push plate to move along the central axis direction of the sampling cutter head under the action of external force so as to push out the soil sample to be tested collected by the inner cavity of the sampling cutter head as a whole. Therefore, for seasonal swamp wetlands, whether in the flood season or the dry season, the blade of the sampling cutter head can be quickly inserted into the soil to a preset depth to collect the required soil sample to be tested, and the collected soil sample is retained as a whole in the inner cavity of the sampling cutter head, thereby ensuring that the collected soil sample maintains the original soil structure and porosity. At the same time, the collected soil sample can be pushed out completely and quickly through the extrusion mechanism and the sampling push plate, which also ensures that the soil structure and porosity of the collected soil sample are not destroyed. The problem that it is difficult to insert the ordinary ring knife into the bottom of the wetland to collect soil samples when collecting seasonal swamp wetland soil samples in the prior art and destroy the structure and porosity of the original soil, making it impossible to accurately carry out subsequent detection work, is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0014] Figure 1 It is a schematic diagram of the overall structure of a soil collector that can be selected according to an embodiment of the utility model;

[0015] Figure 2 It is a schematic diagram of the split structure of a soil collector that can be selected according to an embodiment of the utility model;

[0016] Figure 3 It is a schematic diagram of the separate structure of a sampling cutter head, a sampling push plate and a squeezing mechanism of a soil collector which can be selected according to an embodiment of the utility model;

[0017] Figure 4 It is a schematic structural diagram of an outer cylinder of a soil collector which can be selected according to an embodiment of the utility model;

[0018] Figure 5 yes Figure 4 Schematic diagram of the enlarged structure at point A in the middle.

[0019] The above drawings include the following reference numerals:

[0020] 10. Handle rod; 11. Inner rod body; 111. Limit slide groove; 12. Outer cylinder body; 121. Limit protrusion; 13. Adjustment mechanism; 131. Adjustment screw; 132. Adjustment knob; 14. Rotation limit hole; 20. Sampling blade; 21. Blade; 22. Slide hole; 30. Sampling push plate; 40. Extrusion mechanism; 41. Connecting slide rod; 42. Push ring; 43. Extrusion spring. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] The soil collector of the utility model technical solution is as follows Figures 1 to 3 As shown, it includes a handle bar 10, a sampling cutter head 20, a sampling push plate 30 and an extrusion mechanism 40. The sampling cutter head 20 is a cylindrical structure with a closed upper end and an open lower end. The upper end of the sampling cutter head 20 is fixedly connected to the lower end of the handle bar 10, and the lower end of the sampling cutter head 20 has an annular blade 21; the sampling push plate 30 is a circular plate-shaped structure, and the diameter of the sampling push plate 30 matches the inner diameter of the sampling cutter head 20. The central axis of the sampling push plate 30 is colinear with the central axis of the sampling cutter head 20, and the sampling push plate 30 is along the sampling The sampling cutter head 20 is movably arranged in the inner cavity of the sampling cutter head 20 in the direction of the central axis; the squeezing mechanism 40 is arranged outside the upper end of the sampling cutter head 20 and connected to the sampling push plate 30; the handle rod 10 is used to insert the sampling cutter head 20 into the soil to be collected under the action of external force so that the soil sample to be tested enters the inner cavity of the sampling cutter head 20; the squeezing mechanism 40 is used to drive the sampling push plate 30 to move along the central axis direction of the sampling cutter head 20 under the action of external force so as to push out the soil sample to be tested collected in the inner cavity of the sampling cutter head 20 as a whole. Therefore, for seasonal swamp wetlands, whether in the flood season or the dry season, the blade 21 of the sampling cutter head 20 can be quickly inserted into the soil to a preset depth to collect the required soil sample to be tested, and the collected soil sample is retained as a whole in the inner cavity of the sampling cutter head 20, thereby ensuring that the collected soil sample maintains the original soil structure and porosity. At the same time, the collected soil sample can be pushed out completely and quickly through the squeezing mechanism 40 and the sampling push plate 30, which also ensures that the soil structure and porosity of the collected soil sample are not destroyed. The problem that it is difficult to insert the ordinary ring knife to the preset depth at the bottom of the wetland to collect soil samples and destroy the structure and porosity of the original soil when collecting seasonal swamp wetland soil samples in the prior art is solved.

[0023] When implementing it, Figure 2 and Figure 3As shown, a plurality of sliding holes 22 are provided on the top plate of the sampling cutter head 20; the extrusion mechanism 40 includes a connecting slide rod 41 and a push ring 42, there are a plurality of connecting slide rods 41, the lower ends of the plurality of connecting slide rods 41 extend to the inner cavity of the sampling cutter head 20 through the plurality of sliding holes 22 and are fixedly connected to the sampling push plate 30; the push ring 42 is slidably mounted on the outer wall of the handle rod 10, and the push ring 42 is fixedly connected to the upper ends of the plurality of connecting slide rods 41; the push ring 42 is used to drive the sampling push plate 30 to move downward along the central axis direction of the sampling cutter head 20 through the plurality of connecting slide rods 41 when sliding downward along the outer wall of the handle rod 10 under the action of external force, thereby pushing the soil sample collected inside the sampling cutter head 20 as a whole into the corresponding detection container; optionally, there are four sliding holes 22 and four connecting slide rods 41, the four sliding holes 22 are evenly spaced along the circumference of the sampling cutter head 20, and the four connecting slide rods 41 are evenly spaced along the circumference of the push ring 42.

[0024] In order to enable the sampling push plate 30 to automatically return to the initial position and thus improve the automation of the movement of the sampling push plate 30, the squeezing mechanism 40 further includes a squeezing spring 43, which is sleeved on the outer wall of the handle rod 10, the upper end of the squeezing spring 43 is fixedly connected to the push ring 42, and the lower end of the squeezing spring 43 is fixedly connected to the top plate of the sampling cutter head 20; when the push ring 42 moves toward the sampling cutter head 20 under the action of external force and pushes the sampling push plate 30 to move downward, it continuously compresses the squeezing spring 43, and when the sampling push plate 30 moves to the extreme position, the soil sample is pushed out, and at the same time the squeezing spring 43 is also compressed to the extreme position; at this time, the external force is released, and the push ring 42 is lifted up by the rebound force of the squeezing spring 43, thereby driving the sampling push plate 30 to return to its original position. When it returns to the initial position, the upper surface of the sampling push plate 30 and the inner top wall of the sampling cutter head 20 abut against each other.

[0025] Furthermore, if Figure 2 , Figure 4 and Figure 5As shown, the handle bar 10 includes an inner rod body 11, an outer cylinder body 12 and an adjustment mechanism 13. The lower end of the inner rod body 11 is fixedly connected to the upper end of the sampling cutter head 20; the push ring 42 and the extrusion spring 43 are both sleeved on the outer side wall of the inner rod body 11; the outer cylinder body 12 is slidably sleeved on the outside of the inner rod body 11 along the axial direction of the inner rod body 11; specifically, a limiting groove 111 extending in a square shape along its length is provided on the outer side wall of the inner rod body 11, and a limiting protrusion 121 matching the limiting groove 111 is provided on the inner side wall of the outer cylinder body 12; there are multiple limiting grooves 111, and the limiting protrusions 121 are provided. There are multiple starters 121, multiple limit grooves 111 are evenly spaced along the circumference of the outer wall of the inner rod body 11, and multiple limit protrusions 121 are evenly spaced along the circumference of the inner wall of the outer cylinder 12; multiple limit protrusions 121 are embedded in the multiple limit grooves 111 one by one so that the outer cylinder 12 and the inner rod body 11 can slide relative to each other along the axial direction; the adjustment mechanism 13 is arranged at the upper end of the outer cylinder 12 and connected to the inner rod body 11; the adjustment mechanism 13 is used to drive the inner rod body 11 to extend and retract along the central axis direction of the outer cylinder 12 to lengthen or shorten the length of the handle rod 10.

[0026] Furthermore, if Figure 2 As shown, the top end of the inner rod body 11 is provided with an adjusting screw hole extending inward along its axial direction, and the upper end of the outer cylinder body 12 is provided with a rotation limit hole 14. The adjusting mechanism 13 includes an adjusting screw 131 and an adjusting knob 132. The adjusting screw 131 can rotatably pass through the rotation limit hole 14, and the lower end of the adjusting screw 131 is matched and connected with the adjusting screw hole; the adjusting knob 132 is fixedly installed on the upper end of the adjusting screw 131; the adjusting screw 131 is driven to rotate by the adjusting knob 132 under the action of external force, and the adjusting screw 131 drives the inner rod body 11 to telescopically move along the central axis direction of the outer cylinder body 12 through the threaded structure, thereby lengthening or shortening the length of the handle rod 10; thereby, in the flood season, the length of the handle rod 10 can be flexibly adjusted according to the water depth of the swamp wetland.

[0027] When the soil collector of the embodiment of the utility model is used, first, a water depth detection device is used to detect the depth of the water surface to the bottom mud surface, and the adjustment length of the handle rod 10 is equal to the sum of the water depth and the thickness of the bottom mud to be inserted. The thickness of the bottom mud to be inserted is predetermined according to the experimental requirements. Therefore, after the water depth is detected, the water depth plus the thickness of the bottom mud to be inserted is the length of the handle rod 10 that needs to be adjusted. Then, the length of the handle rod 10 is adjusted according to the calculated adjustment length, and no adjustment is required during the dry season. Then, the sampling cutter head 20 is vertically inserted into the soil to be sampled through the handle rod 10. The annular blade 21 of the sampling cutter head 20 can cut the soil as a whole and quickly insert the soil. The sampled soil enters the inner cavity of the sampling cutter head 20, and then the sampling cutter head 20 is pulled out; the push ring 42 is pushed downward to drive the sampling push plate 30 to move downward so that the soil sampled in the inner cavity of the sampling cutter head 20 is pushed out as a whole into the detection container.

[0028] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A soil collector, characterized in that: include: Handle bar (10); A sampling knife head (20), the sampling knife head (20) is a cylindrical structure with a closed upper end and an open lower end, the upper end of the sampling knife head (20) is fixedly connected to the lower end of the handle rod (10), and the lower end of the sampling knife head (20) has an annular blade (21); A sampling push plate (30), the sampling push plate (30) is a circular plate-shaped structure and the diameter of the sampling push plate (30) matches the inner diameter of the sampling cutter head (20), the central axis of the sampling push plate (30) is colinear with the central axis of the sampling cutter head (20) and the sampling push plate (30) is movably arranged in the inner cavity of the sampling cutter head (20) along the central axis direction of the sampling cutter head (20); A squeezing mechanism (40) is arranged outside the upper end of the sampling blade head (20) and connected to the sampling push plate (30); The handle bar (10) is used to insert the sampling blade head (20) into the soil to be collected under the action of an external force so that the soil sample to be tested enters the inner cavity of the sampling blade head (20); the squeezing mechanism (40) is used to drive the sampling push plate (30) to move along the central axis direction of the sampling blade head (20) under the action of an external force so as to push out the soil sample to be tested collected from the inner cavity of the sampling blade head (20) as a whole.

2. The soil collector according to claim 1, characterized in that: A plurality of sliding holes (22) are provided on the top plate of the sampling blade head (20); the squeezing mechanism (40) comprises: A connecting slide rod (41), wherein the connecting slide rod (41) is a plurality of the connecting slide rods (41), and the lower ends of the plurality of connecting slide rods (41) correspondingly pass through the plurality of slide holes (22) to extend to the inner cavity of the sampling blade head (20) and are fixedly connected to the sampling push plate (30); A push ring (42) is slidably mounted on the outer wall of the handle bar (10), and the push ring (42) is fixedly connected to the upper ends of the plurality of connecting slide bars (41); The push ring (42) is used to drive the sampling push plate (30) to move along the central axis direction of the sampling blade head (20) through the plurality of connecting slide rods (41) under the action of external force.

3. The soil collector according to claim 2, characterized in that: There are four sliding holes (22) and four connecting sliding rods (41), and the four sliding holes (22) are evenly spaced along the circumference of the sampling blade head (20).

4. The soil collector according to claim 2, characterized in that: The extrusion mechanism (40) further comprises: A squeezing spring (43) is sleeved on the outer wall of the handle rod (10), the upper end of the squeezing spring (43) is fixedly connected to the push ring (42), and the lower end of the squeezing spring (43) is fixedly connected to the top plate of the sampling blade head (20); When the push ring (42) moves toward the sampling blade head (20) under the action of an external force, it pushes the sampling push plate (30) to move downward and compresses the extrusion spring (43); when there is no external force, the push ring (42) is lifted up by the rebound force of the extrusion spring (43) to drive the sampling push plate (30) to return to its original position.

5. The soil collector according to claim 1, characterized in that: The handle bar (10) comprises: An inner rod body (11), the lower end of the inner rod body (11) being fixedly connected to the upper end of the sampling blade head (20); An outer cylinder (12) is slidably sleeved on the outside of the inner rod (11) along the axial direction of the inner rod (11); An adjusting mechanism (13) is arranged at the upper end of the outer cylinder (12) and connected to the inner rod (11); The adjustment mechanism (13) is used to drive the inner rod body (11) to extend and retract along the central axis direction of the outer cylinder body (12) so as to lengthen or shorten the length of the handle rod (10).

6. The soil collector according to claim 5, characterized in that: The outer side wall of the inner rod body (11) is provided with a limiting sliding groove (111) extending in a square shape along its length, and the inner side wall of the outer cylinder body (12) is provided with a limiting protrusion (121) matching the limiting sliding groove (111); Wherein, the limiting protrusion (121) can be slidably embedded in the limiting sliding groove (111).

7. The soil collector according to claim 6, characterized in that: There are a plurality of the limiting grooves (111), and a plurality of the limiting protrusions (121); the plurality of the limiting grooves (111) are evenly spaced and distributed along the circumference of the outer side wall of the inner rod body (11); and the plurality of the limiting protrusions (121) are evenly spaced and distributed along the circumference of the inner side wall of the outer cylinder body (12); Wherein, the plurality of limiting protrusions (121) are embedded in the plurality of limiting sliding grooves (111) in a one-to-one correspondence.

8. The soil collector according to claim 6, characterized in that: The top end of the inner rod body (11) is provided with an adjusting screw hole extending inward along its axial direction, the upper end of the outer cylinder body (12) is provided with a rotation limiting hole (14), and the adjusting mechanism (13) comprises: An adjusting screw (131), wherein the adjusting screw (131) rotatably passes through the rotation limiting hole (14), and the lower end of the adjusting screw (131) is cooperatively connected with the adjusting screw hole; An adjusting knob (132) fixedly mounted on the upper end of the adjusting screw (131); Wherein, the adjusting knob (132) drives the adjusting screw (131) to rotate under the action of an external force, thereby driving the inner rod body (11) to telescopically move along the central axis direction of the outer cylinder body (12).

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