Gully region soil sample collection device
By designing an adjustable structure between the limiting bushing and the main shaft, the problem of loose soil columns during soil sample collection in gully areas was solved, enabling accurate collection of soil samples at specific depths and improving the collection success rate.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- POWERCHINA WATER ENVIRONMENT GOVERANCE
- Filing Date
- 2025-06-17
- Publication Date
- 2026-06-05
AI Technical Summary
When collecting soil samples in gully areas, existing technologies often result in soil columns that easily loosen after being discharged, making it difficult to accurately collect soil samples at specific depths and affecting the success rate of collection.
A soil sample collection device was designed, comprising a soil drill bit, a main shaft, a limiting bushing, and an adjustable distance structure. By controlling the discharge volume of the soil column, soil samples at a specific depth can be collected. The adjustable distance structure of the limiting bushing and the main shaft ensures that the soil column remains stable during the extraction process.
Effective control of soil column discharge improves the success rate of soil sample collection and ensures the accuracy and integrity of soil samples.
Smart Images
Figure CN224327932U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of gully detection technology, specifically relating to a soil sample collection device for gully areas. Background Technology
[0002] Gullyons are areas of densely packed gullies formed by water erosion. They are created by linear water flows (such as stormwater runoff) scouring the surface and exhibit a dendritic or linear distribution of erosion gullies. To compare and analyze the soil physicochemical properties, erosion levels, water permeability, and microbial distribution at different depths, testing units need to sample the soil at the gullies to study gully development mechanisms, soil erosion patterns, and ecological restoration potential, providing a scientific basis for soil erosion prevention and land remediation.
[0003] In existing technologies, soil sample collection is mainly achieved through a soil sampling drill. Specifically, the lower end of the drill can break through and penetrate the soil, allowing the soil sample to be inserted into the tube in a columnar shape. After reaching the desired depth, the drill is pulled upwards to obtain a soil column. Finally, the soil column is removed from the drill and broken up to obtain a fragmented soil sample.
[0004] The inventors discovered that due to the special characteristics of gully areas, soil samples need to be collected from a specific depth to accurately analyze the soil properties. Therefore, after obtaining the soil column, a portion of the upper part of the soil column needs to be manually cut. However, once the soil column is completely removed by the soil auger, its circumferential constraint is lost, which causes the soil column to loosen rapidly, affecting the quantification and cutting based on different depths, resulting in a low success rate of soil sample collection. Utility Model Content
[0005] This application provides a soil sample collection device for gully areas, which aims to control the discharge volume of the soil column so as to facilitate the artificial cutting of the soil column, thereby achieving the technical objective of collecting soil samples at a specific depth and improving the success rate of soil sample collection.
[0006] To achieve the above objectives, the technical solution adopted in this application is as follows:
[0007] A soil sample collection device for gully areas is provided, comprising:
[0008] The soil sampling drill bit adopts a hollow cylindrical structure; a hand handle is coaxially connected to the upper end of the soil sampling drill bit, and the hand handle has an axial cavity that runs through the drill bit and communicates with the inside of the soil sampling drill bit.
[0009] A main shaft is coaxially inserted into the shaft cavity; the upper end of the main shaft extends to the upper side of the hand handle, and the lower end of the main shaft extends into the soil sampling drill bit, and has a pusher plate extending radially outward; and
[0010] A limiting bushing is disposed on the upper side of the hand handle and sleeved on the outer periphery of the main shaft; the limiting bushing and the main shaft have an adjustable distance structure, which is used to drive the limiting bushing to move relative to the main shaft to increase or decrease the distance between the limiting bushing and the upper end of the main shaft;
[0011] The limiting bushing is used to abut against the hand handle to restrict the movement of the main shaft, so that the pusher pushes part of the soil column out of the soil sampling drill bit and part of the soil column is inside the soil sampling drill bit.
[0012] In one possible implementation, the upper end of the spindle has a limiting disk extending radially outward;
[0013] The limiting bushing has multiple upward-extending connecting rods, each of which is slidably connected to the limiting disk in the vertical direction, and the upper end of each connecting rod extends to the upper side of the limiting disk.
[0014] In one possible implementation, the adjustment structure includes:
[0015] A lifting plate is disposed on the upper side of the limiting plate and connected to the upper end of each of the connecting rods; a transmission nut is disposed on the lifting plate, and the axial direction of the transmission nut is parallel to the vertical direction; and
[0016] A transmission screw is rotatably mounted on the upper end face of the main shaft, with its axial direction and rotational axis both parallel to the vertical direction, and the transmission screw is threadedly connected to the transmission nut; the transmission screw is driven by a rotary motor for driving its rotation.
[0017] When the transmission screw rotates, the transmission nut moves along the axial direction of the transmission screw, thereby driving the limiting bushing to move through the lifting plate and the connecting rod.
[0018] In one possible implementation, the spindle further includes:
[0019] A protective shell is installed over the upper end of the main shaft and is in contact with the outer peripheral surface of the limiting plate to form a closed structure surrounding the transmission screw.
[0020] The upper end of the protective shell has a through hole suitable for the upper end of the transmission screw to pass through; the rotating motor is fixedly mounted on the protective shell and is connected to the upper end of the transmission screw in a transmission connection.
[0021] In one possible implementation, the protective shell has two coaxially arranged positioning rings; the outer peripheral surface of each positioning ring is connected to the inner peripheral surface of the protective shell, and both are made of elastic material;
[0022] When the protective shell and the outer peripheral surface of the limiting disk come into contact to form the closed structure, the two positioning rings abut against the upper and lower sides of the limiting disk respectively to restrict the movement of the protective shell relative to the main shaft.
[0023] In one possible implementation, the limiting plate has a plurality of reserved holes corresponding one-to-one with the plurality of connecting rods; each of the reserved holes extends through the limiting plate in the vertical direction to allow the corresponding connecting rod to pass through.
[0024] The lower side of the limiting plate is also provided with a recessed groove that surrounds the main shaft and communicates with the reserved hole. The recessed groove is used for the limiting bushing to be inserted so that the lower side of the limiting bushing is aligned with the lower side of the limiting plate.
[0025] In one possible implementation, the upper end of the soil sampling drill bit has an upwardly extending mounting ring that communicates with its interior, and the lower end of the hand handle has a mating groove that communicates coaxially with the shaft cavity.
[0026] The docking groove is used for the mounting ring to be inserted so that the outer circumferential surface of the mounting ring is in contact with the inner circumferential surface of the docking groove, and restricts the radial relative movement between the soil sampling drill bit and the handheld rod.
[0027] In one possible implementation, the mounting ring has a positioning hole that extends radially and communicates with its interior; the hand handle has an alignment hole that extends radially and communicates with the mating groove.
[0028] When the mounting ring is embedded in the mating groove, the positioning hole is adapted to communicate with the alignment hole;
[0029] The handheld lever also includes:
[0030] A locking bolt, adapted to be inserted into the communicating positioning hole and the alignment hole; the head of the locking bolt abuts against the outer surface of the handle, and the end of the locking bolt extends beyond the handle; and
[0031] A connecting nut is threadedly connected to the protruding portion of the locking bolt and is used to abut against the outer surface of the hand handle;
[0032] The main shaft has a radially penetrating slot that extends along the length of the main shaft and is adapted for the locking bolt to pass through.
[0033] In one possible implementation, two elastic rings are fitted onto the locking bolt;
[0034] When the locking bolt is inserted into the connected positioning hole and the alignment hole, and the locking bolt is connected to the connecting nut, the two elastic rings are respectively located between the head of the locking bolt and the outer surface of the hand handle, and between the end of the locking bolt and the outer surface of the hand handle, so as to be suitable for elastic deformation and to fill the corresponding gap.
[0035] In one possible implementation, the handheld lever further includes:
[0036] A foot pedal, slidably mounted on the handrail along its axial direction; and
[0037] A stop ring is coaxially disposed on the hand handle to abut against the lower side of the foot pedal and restrict the downward movement of the foot pedal relative to the hand handle;
[0038] The stop ring is located above the alignment hole to restrict the foot pedal from moving to abut against the locking bolt and the connecting nut.
[0039] In this embodiment of the application, by inserting the soil sampling drill bit into the ground, soil can be introduced into the drill bit and form a soil column; then, by pulling the drill bit outward with a hand lever, the soil column can be extracted to the ground.
[0040] When removing the soil column from the soil sampling drill bit, the upper end of the soil column can be pushed by the pusher plate by manually controlling the movement of the main shaft, so that the soil column gradually exits the soil sampling drill bit until the limit sleeve abuts against the hand handle. On this basis, the distance between the limit sleeve and the upper end of the main shaft can be adjusted by adjusting the distance structure, so as to control the amount of soil column withdrawal. This achieves the technical purpose of keeping the soil column outside the soil sampling drill bit below a certain depth and inside the soil sampling drill bit above a certain depth, so as to facilitate the manual cutting of the soil column and avoid the impact of loose soil column.
[0041] The soil sample collection device for gully areas provided in this embodiment, compared with the prior art, can control the amount of soil column discharged, so as to facilitate the artificial cutting of the soil column, thereby achieving the technical objective of collecting soil samples at a specific depth and improving the success rate of soil sample collection. Attached Figure Description
[0042] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0043] Figure 1 This is a front view of the soil sampling device for gully areas provided in an embodiment of this application;
[0044] Figure 2 for Figure 1 A magnified view of a portion of the middle circle A;
[0045] Figure 3 A side view of the soil sampling device for gully areas provided in an embodiment of this application;
[0046] Figure 4 For along Figure 3 Cross-sectional view of the middle BB line;
[0047] Figure 5 for Figure 4 A magnified view of a portion of the middle circle C;
[0048] Figure 6 for Figure 4 A magnified view of a portion of the middle circle at point D;
[0049] Figure 7 This is a three-dimensional structural diagram of the soil sampling drill bit used in the embodiments of this application;
[0050] Figure 8 This is a three-dimensional structural diagram of the handheld lever used in the embodiments of this application;
[0051] Figure 9 This is a partial schematic diagram of the handheld stick used in the embodiments of this application from a stereoscopic perspective;
[0052] Figure 10 This is a three-dimensional structural diagram of the spindle used in the embodiments of this application;
[0053] Figure 11 This is a partial schematic diagram of the main axis used in the embodiments of this application from a stereoscopic perspective;
[0054] Figure 12 This is a three-dimensional structural diagram of the limiting bushing and transmission nut used in the embodiments of this application from an exploded perspective.
[0055] Figure 13 This is a cross-sectional view of the protective shell used in the embodiments of this application;
[0056] Explanation of reference numerals in the attached drawings: 1. Soil sampling drill bit; 11. Mounting ring; 111. Positioning hole; 2. Main shaft; 21. Push plate; 22. Limiting plate; 221. Reserved hole; 222. Sinking groove; 23. Strip hole; 3. Limiting bushing; 31. Connecting rod; 4. Hand handle; 41. Shaft cavity; 42. Docking groove; 43. Alignment hole; 44. Stop ring; 5. Adjustment structure; 51. Lifting plate; 511. Transmission nut; 52. Transmission screw; 521. Rotating motor; 6. Protective shell; 61. Positioning ring; 62. Through hole; 7. Locking bolt; 71. Connecting nut; 72. Elastic ring; 8. Foot pedal. Detailed Implementation
[0057] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.
[0058] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.
[0059] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0060] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0061] Please refer to the following: Figures 1 to 13 The soil sampling device for gully areas provided in this application will now be described. The soil sampling device for gully areas proposed in this application includes a soil sampling drill bit 1, a main shaft 2, and a limiting bushing 3.
[0062] The soil sampling drill bit 1 adopts a hollow cylindrical structure with an inclined lower end to facilitate insertion into the ground. Furthermore, the lower end of the cylindrical structure has a notch extending along its axial direction and communicating with its interior, so that part of the soil column can be embedded in the notch, which is beneficial for the shaping and fixation of the soil column and prevents the soil column from separating from the soil sampling drill bit 1 during the process of extracting it from the ground.
[0063] The upper end of the soil sampling drill bit 1 has a hand-held rod 4, which has a handle extending radially outward, and the hand-held rod 4 is coaxially connected to the soil sampling drill bit 1. When it is necessary to insert the soil sampling drill bit 1 into the ground, the operator applies stress to the soil sampling drill bit 1 through the hand-held rod 4 and controls the insertion depth of the soil sampling drill bit 1 relative to the ground. In order to facilitate the control of the insertion depth of the soil sampling drill bit 1, axially spaced graduation marks are also provided on the outer surface of the soil sampling drill bit 1.
[0064] The handheld lever 4 has a shaft cavity 41 that extends along the axial direction of the handheld lever 4, and when the soil sampling drill bit 1 is combined with the handheld lever 4, the shaft cavity 41 is connected to the interior of the soil sampling drill bit 1.
[0065] The main shaft 2 is coaxially inserted into the shaft cavity 41; and the upper end of the main shaft 2 extends from the opening at the upper end of the shaft cavity 41 to the upper side of the hand handle 4, while the lower end of the main shaft 2 extends into the soil sampling drill bit 1 from the opening at the lower end of the shaft cavity 41. Based on this, the lower end of the main shaft 2 has a pusher 21 extending radially outward, the outer circumferential surface of which is in contact with the inner circumferential surface of the soil sampling drill bit 1, so that when the pusher 21 moves, it pushes the soil column inside the soil sampling drill bit 1 to move until it exits the soil sampling drill bit 1; that is, by controlling the amount of movement of the main shaft 2, the length of the soil column exiting the soil sampling drill bit 1 can be controlled, and the extended part is the part that is far from the ground.
[0066] The limiting sleeve 3 is disposed on the upper side of the hand handle 4 and is fitted around the outer periphery of the main shaft 2, having the freedom to move relative to the main shaft 2 along the axial direction of the main shaft 2. Based on this, there is an adjusting structure 5 between the limiting sleeve 3 and the main shaft 2. The adjusting structure 5 is used to drive the limiting sleeve 3 to move relative to the main shaft 2, so as to increase or decrease the distance between the limiting sleeve 3 and the upper end of the main shaft 2.
[0067] During the process of pushing the soil column by the pusher 21, the limiting sleeve 3 abuts against the hand handle 4 to restrict the movement of the main shaft 2, thereby stopping the movement of the soil column out of the soil sampling drill bit 1. In this state, part of the soil column extends outside the soil sampling drill bit 1, while the other part is inside the soil sampling drill bit 1. By cutting the soil column with tools such as blades, the required depth of the soil column can be obtained. It should be noted that during the cutting process, the soil column inside the soil sampling drill bit 1 is kept in columnar shape by the action of the inner circumferential surface of the soil sampling drill bit 1, while the soil column outside the soil sampling drill bit 1, even if it becomes loose, can be effectively recovered and preserved.
[0068] In this embodiment of the application, by inserting the soil sampling drill bit 1 into the ground, soil can be introduced into the soil sampling drill bit 1 and form a soil column; on this basis, by pulling the soil sampling drill bit 1 outward with the hand handle 4, the soil column can be taken out to the ground.
[0069] When removing the soil column from the soil sampling drill bit 1, the upper end of the soil column can be pushed by the pusher plate 21 by manually controlling the movement of the main shaft 2, so that the soil column gradually exits the soil sampling drill bit 1 until the limiting sleeve 3 abuts against the hand handle 4. On this basis, the distance between the limiting sleeve 3 and the upper end of the main shaft 2 can be adjusted by adjusting the distance adjustment structure 5, so as to control the amount of soil column withdrawal. This achieves the technical purpose of keeping the soil column outside the soil sampling drill bit 1 below a certain depth and keeping the soil column inside the soil sampling drill bit 1 above a certain depth, so as to facilitate the manual cutting of the soil column and avoid the impact of loose soil column.
[0070] The soil sample collection device for gully areas provided in this embodiment, compared with the prior art, can control the amount of soil column discharged, so as to facilitate the artificial cutting of the soil column, thereby achieving the technical objective of collecting soil samples at a specific depth and improving the success rate of soil sample collection.
[0071] In some embodiments, such as Figure 6 , Figure 11 and Figure 12 As shown, the upper end of the spindle 2 has a limiting disk 22 that extends radially outward.
[0072] Based on this, the limiting bushing 3 has multiple connecting rods 31, which are spaced around the central axis of the limiting bushing 3. Each connecting rod 31 is located directly above the limiting bushing 3 and extends upward. Furthermore, the lower end of each connecting rod 31 is slidably connected to the limiting disk 22 in the vertical direction, and the upper end of each connecting rod 31 extends to the upper side of the limiting disk 22 to realize the sliding connection between the limiting bushing 3 and the main shaft 2.
[0073] In some embodiments, such as Figure 4 and Figure 6 As shown, the adjustable structure 5 includes a lifting plate 51 and a transmission screw 52.
[0074] The lifting plate 51 is positioned on the upper side of the limiting plate 22 and is connected to the upper end of each connecting rod 31 to achieve the connection between the lifting plate 51 and the limiting bushing 3. A transmission nut 511 is provided on the lifting plate 51, and the axial direction of the transmission nut 511 is parallel to the vertical direction. Specifically, the lifting plate 51 has a through-hole in the vertical direction, the cross-section of which is consistent with the cross-sectional shape of the transmission nut 511, allowing the transmission nut 511 to be fixedly embedded within it.
[0075] The transmission screw 52 is rotatably mounted on the upper end face of the main shaft 2, and its axial direction and rotation axis are parallel to the vertical direction. Specifically, the upper end face of the main shaft 2 has a slot with an inverted T-shaped cross-section, and the lower end of the transmission screw 52 has a connecting block with an inverted T-shaped cross-section that is embedded in the slot, so as to realize the connection relationship between the transmission screw 52 and the main shaft 2.
[0076] The transmission screw 52 is threadedly connected to the transmission nut 511 so that when the transmission screw 52 rotates, the transmission nut 511 moves along the axial direction of the transmission screw 52; and the transmission screw 52 is also connected to a rotary motor 521 for driving its rotation.
[0077] During the process of rotating the transmission screw 52 driven by the rotating motor 521, the transmission nut 511 can move along the axial direction of the transmission screw 52, so as to drive the limit sleeve 3 to move through the combination structure of the lifting plate 51 and the connecting rod 31, thereby achieving the technical purpose of changing the distance between the limit sleeve 3 and the upper end of the main shaft 2.
[0078] In some embodiments, such as Figure 6 and Figure 13 As shown, the spindle 2 also includes a protective shell 6.
[0079] The protective shell 6 is installed on the upper end of the main shaft 2 and is in contact with the outer peripheral surface of the limiting disk 22 to form a closed structure surrounding the transmission screw 52, thereby achieving the technical purpose of protecting the transmission screw 52.
[0080] The upper end of the protective shell 6 has a through hole 62 suitable for the upper end of the transmission screw 52 to pass through; the rotating motor 521 is fixedly mounted on the protective shell 6 and coaxially connected to the upper end of the transmission screw 52 to realize the transmission connection between the transmission screw 52 and the rotating motor 521.
[0081] In some embodiments, such as Figure 6 and Figure 13 As shown, the protective shell 6 has two coaxially arranged positioning rings 61 inside; the outer peripheral surface of each positioning ring 61 is connected to the inner peripheral surface of the protective shell 6, and both are made of elastic material.
[0082] When the protective shell 6 and the outer peripheral surface of the limiting disk 22 are in contact and form the aforementioned closed structure, the two positioning rings 61 abut against the upper and lower sides of the limiting disk 22 respectively, so as to restrict the movement of the protective shell 6 relative to the main shaft 2 and improve the stability of the connection relationship between the protective shell 6 and the main shaft 2.
[0083] In some embodiments, such as Figure 4 , Figure 11 and Figure 12As shown, the limiting plate 22 has multiple reserved holes 221 that correspond one-to-one with multiple connecting rods 31; wherein each reserved hole 221 penetrates the limiting plate 22 in the vertical direction to allow the corresponding connecting rod 31 to pass through, thereby realizing the sliding connection relationship between the limiting plate 22 and the connecting rod 31.
[0084] The lower side of the limiting plate 22 is also provided with a sinking groove 222, which extends around the central axis of the main shaft 2 and is connected to the reserved hole 221.
[0085] In practical use, the sinkhole 222 is used for the insertion of the limiting sleeve 3, so that the lower side of the limiting sleeve 3 is aligned with the lower side of the limiting plate 22. This ensures that when the limiting sleeve 3 abuts against the upper end of the hand handle 4, the limiting plate 22 also abuts against the upper end of the hand handle 4, thereby increasing the contact area. It should be noted that in this state, the pusher 21 moves to the opening of the soil sampling drill bit 1, so that all the soil column inside the soil sampling drill bit 1 is pushed out, achieving complete soil recovery at the corresponding depth.
[0086] In some embodiments, such as Figure 5 As shown, the upper end of the soil sampling drill bit 1 has an upwardly extending mounting ring 11 that communicates with its interior, and the lower end of the hand handle 4 has a docking groove 42 that is coaxially connected with the shaft cavity 41.
[0087] When the soil sampling drill bit 1 and the handheld rod 4 are combined, the mating groove 42 is used for the mounting ring 11 to be inserted so that the outer circumferential surface of the mounting ring 11 is in contact with the inner circumferential surface of the mating groove 42, and the relative radial movement between the soil sampling drill bit 1 and the handheld rod 4 is restricted, thereby improving the stability of the connection.
[0088] In some embodiments, such as Figure 5 , Figure 7 , Figure 8 and Figure 9 As shown, the mounting ring 11 has a positioning hole 111 that is radially through and communicates with its interior; based on this, the hand handle 4 has a alignment hole 43 that is radially through and communicates with the mating groove 42.
[0089] When the handheld rod 4 is combined with the soil sampling drill bit 1, the mounting ring 11 is embedded in the docking groove 42, and the alignment hole 43 is connected to the positioning hole 111.
[0090] In this embodiment, the hand lever 4 also includes a locking bolt 7 and a connecting nut 71.
[0091] The locking bolt 7 is adapted to be inserted into the connected positioning hole 111 and the alignment hole 43; the head of the locking bolt 7 is used to abut against the outer surface of the hand handle 4 and to extend the end of the locking bolt 7 (i.e. the end of the locking bolt 7 away from its head) to the outside of the hand handle 4.
[0092] The connecting nut 71 is threadedly connected to the protruding part of the locking bolt 7 and abuts against the outer surface of the handheld rod 4 to clamp the handheld rod 4 with the head of the locking bolt 7, preventing the mounting ring 11 from disengaging from the mating groove 42, thereby preventing the handheld rod 4 from separating from the soil sampling drill bit 1. It should be noted that, unlike the conventional threaded connection (i.e., an external thread structure is set on the outer circumferential surface of the mounting ring 11 and an internal thread structure is set on the inner circumferential surface of the mating groove 42), this connection method has better stability and can prevent the soil sampling drill bit 1 from loosening during the operator's repeated rotation of the handheld rod 4 (to screw the soil sampling drill bit 1 into the ground).
[0093] Based on the aforementioned structure, the spindle 2 also has a strip hole 23 that extends radially through it. The strip hole 23 extends along the length of the spindle 2 and is adapted for the locking bolt 7 to pass through, so as to avoid the locking bolt 7 affecting the movement of the spindle 2.
[0094] In some embodiments, such as Figure 5 As shown, two elastic rings 72 are fitted on the locking bolt 7.
[0095] When the locking bolt 7 is inserted into the connected positioning hole 111 and alignment hole 43, and the locking bolt 7 is connected to the connecting nut 71, the two elastic rings 72 are located on both sides of the hand handle 4, that is, between the head of the locking bolt 7 and the outer surface of the hand handle 4, and between the end of the locking bolt 7 and the outer surface of the hand handle 4.
[0096] When the locking bolt 7 and the connecting nut 71 are tightened, each elastic ring 72 can undergo elastic deformation and fill the corresponding gap.
[0097] In some embodiments, such as Figure 1 and Figure 4 As shown, the hand lever 4 also includes a foot pedal 8 and a stop ring 44.
[0098] The foot pedal 8 is slidably mounted on the hand handle 4 along the axial direction of the hand handle 4. Specifically, the foot pedal 8 includes an annular portion that is slidably sleeved on the outer periphery of the hand handle 4, and a straight plate portion that is fixed on the annular portion and extends radially along the annular portion. When in use, the operator's foot is placed on the straight plate portion to assist the hand in applying pressure and ensure that the soil drilling bit 1 can be inserted and penetrate deep into the ground.
[0099] The stop ring 44 is coaxially mounted on the hand lever 4 to abut against the lower side of the foot pedal 8 and restrict the downward movement of the foot pedal 8 relative to the hand lever 4, thereby improving the stability of the aforementioned pressure application process.
[0100] After the structure is assembled, the stop ring 44 is positioned above the alignment hole 43 to prevent the foot pedal 8 from moving to abut against the locking bolt 7 and the connecting nut 71, thereby preventing damage to the relevant structure.
[0101] The above content is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A soil sampling device for gully areas, characterized in that, include: The soil sampling drill bit adopts a hollow cylindrical structure; a hand handle is coaxially connected to the upper end of the soil sampling drill bit, and the hand handle has an axial cavity that runs through the drill bit and communicates with the inside of the soil sampling drill bit. A main shaft is coaxially inserted into the shaft cavity; the upper end of the main shaft extends to the upper side of the hand handle, and the lower end of the main shaft extends into the soil sampling drill bit, and has a pusher plate extending radially outward; and A limiting bushing is disposed on the upper side of the hand handle and sleeved on the outer periphery of the main shaft; the limiting bushing and the main shaft have an adjustable distance structure, which is used to drive the limiting bushing to move relative to the main shaft to increase or decrease the distance between the limiting bushing and the upper end of the main shaft; The limiting bushing is used to abut against the hand handle to restrict the movement of the main shaft, so that the pusher pushes part of the soil column out of the soil sampling drill bit and part of the soil column is inside the soil sampling drill bit.
2. The soil sampling device for gully areas as described in claim 1, characterized in that, The upper end of the main shaft has a limiting disc that extends radially outward; The limiting bushing has multiple upward-extending connecting rods, each of which is slidably connected to the limiting disk in the vertical direction, and the upper end of each connecting rod extends to the upper side of the limiting disk.
3. The soil sampling device for gully areas as described in claim 2, characterized in that, The adjustment structure includes: A lifting plate is disposed on the upper side of the limiting plate and connected to the upper end of each of the connecting rods; a transmission nut is disposed on the lifting plate, and the axial direction of the transmission nut is parallel to the vertical direction; and A transmission screw is rotatably mounted on the upper end face of the main shaft, with its axial direction and rotational axis both parallel to the vertical direction, and the transmission screw is threadedly connected to the transmission nut; the transmission screw is driven by a rotary motor for driving its rotation. When the transmission screw rotates, the transmission nut moves along the axial direction of the transmission screw, thereby driving the limiting bushing to move through the lifting plate and the connecting rod.
4. The soil sampling device for gully areas as described in claim 3, characterized in that, The spindle also includes: A protective shell is installed over the upper end of the main shaft and is in contact with the outer peripheral surface of the limiting plate to form a closed structure surrounding the transmission screw. The upper end of the protective shell has a through hole suitable for the upper end of the transmission screw to pass through; the rotating motor is fixedly mounted on the protective shell and is connected to the upper end of the transmission screw in a transmission connection.
5. The soil sampling device for gully areas as described in claim 4, characterized in that, The protective shell has two coaxially arranged positioning rings inside; the outer peripheral surface of each positioning ring is connected to the inner peripheral surface of the protective shell, and both are made of elastic material; When the protective shell and the outer peripheral surface of the limiting disk come into contact to form the closed structure, the two positioning rings abut against the upper and lower sides of the limiting disk respectively to restrict the movement of the protective shell relative to the main shaft.
6. The soil sampling device for gully areas as described in claim 2, characterized in that, The limiting plate has multiple reserved holes corresponding to the multiple connecting rods; each of the reserved holes passes through the limiting plate in the vertical direction to allow the corresponding connecting rod to pass through. The lower side of the limiting plate is also provided with a recessed groove that surrounds the main shaft and communicates with the reserved hole. The recessed groove is used for the limiting bushing to be inserted so that the lower side of the limiting bushing is aligned with the lower side of the limiting plate.
7. The soil sampling device for gully areas as described in claim 1, characterized in that, The upper end of the soil sampling drill bit has an upwardly extending mounting ring that communicates with its interior, and the lower end of the hand handle has a mating groove that communicates coaxially with the shaft cavity. The docking groove is used for the mounting ring to be inserted so that the outer circumferential surface of the mounting ring is in contact with the inner circumferential surface of the docking groove, and restricts the radial relative movement between the soil sampling drill bit and the handheld rod.
8. The soil sample collection device for gully areas as described in claim 7, characterized in that, The mounting ring has a positioning hole that runs radially through it and communicates with its interior; the hand handle has an alignment hole that runs radially through it and communicates with the docking groove. When the mounting ring is embedded in the mating groove, the positioning hole is adapted to communicate with the alignment hole; The handheld lever also includes: A locking bolt, adapted to be inserted into the communicating positioning hole and the alignment hole; the head of the locking bolt abuts against the outer surface of the handle, and the end of the locking bolt extends beyond the handle; and A connecting nut is threadedly connected to the protruding portion of the locking bolt and is used to abut against the outer surface of the hand handle; The main shaft has a radially penetrating slot that extends along the length of the main shaft and is adapted for the locking bolt to pass through.
9. The soil sample collection device for gully areas as described in claim 8, characterized in that, Two elastic rings are fitted onto the locking bolt; When the locking bolt is inserted into the connected positioning hole and the alignment hole, and the locking bolt is connected to the connecting nut, the two elastic rings are respectively located between the head of the locking bolt and the outer surface of the hand handle, and between the end of the locking bolt and the outer surface of the hand handle, so as to be suitable for elastic deformation and to fill the corresponding gap.
10. The soil sampling device for gully areas as described in claim 8, characterized in that, The handheld lever also includes: A foot pedal, slidably mounted on the handrail along its axial direction; and A stop ring is coaxially disposed on the hand handle to abut against the lower side of the foot pedal and restrict the downward movement of the foot pedal relative to the hand handle; The stop ring is located above the alignment hole to restrict the foot pedal from moving to abut against the locking bolt and the connecting nut.