Disclosure of Invention
The invention aims to overcome the problems in the prior art and provide a soil sampling device for ecological environment monitoring, which can only accurately sample soil at a required sampling depth in a soil layer.
The technical scheme of the invention is as follows: a soil sampling device for ecological environment monitoring includes:
the drilling barrel is internally of a hollow structure, and the lower end of the wall of the drilling barrel is provided with a soil sample inlet;
the drilling handle is arranged at the upper end of the drilling barrel and used for applying drilling power to the drilling barrel during soil sampling and drilling so as to drill to a required sampling depth;
soil sample sampling mechanism includes:
the rotary power rod is longitudinally arranged inside the drilling cylinder, a rotary handle is arranged at the upper end of the rotary power rod, and external threads are arranged at the lower end of the rotary power rod;
the soil sample inlet plugging mechanism comprises a gear, and the gear is coaxially connected to the lower end head of the rotating power rod; the gear is meshed with the rack, the rack is connected with the sliding rail in a sliding manner, the sliding rail is fixed on the support, and the support is fixed on the inner side wall of the drilling barrel; one end of the rack close to the side wall of the drilling cylinder is provided with a soil sample inlet plugging cover;
the nut is in threaded connection with the rotating power rod, the side wall of the nut is fixedly connected with one end of the connecting rod, the middle part of the connecting rod is provided with a sliding block, the sliding block is in sliding connection with the longitudinal guide rail, and the longitudinal guide rail is fixedly connected with the inner side wall of the drilling cylinder through a fixing frame;
the soil sampling mechanism comprises a cutter head, the cutter head is hinged to the other end of the connecting rod, a supporting spring is connected between the cutter head and the connecting rod, when the nut is positioned at the upper end of the external thread, the cutter back of the cutter head is pressed against and contacted with the inner side wall of the drilling barrel under the supporting force of the supporting spring, a cutter head limiting block is further arranged at one end of the connecting rod, which is connected with the cutter head, and the cutter head limiting block is used for preventing the cutter head from being excessively propped open along the supporting force direction of the supporting spring when the cutter head is separated from the inner side wall of; under the blade back of the tool bit and the state that the inner side wall of the drilling barrel is pressed and contacted under the action of the supporting spring supporting force, the soil sample inlet is located below the tool bit.
The soil sample inlets are at least 2 and distributed along the circumferential direction of the drilling cylinder, and the number of the soil sampling mechanisms is equal to that of the soil sample inlets and corresponds to that of the soil sample inlets one to one.
The rotary power rod is arranged in the drilling barrel through a support frame, and the rotary power rod is rotatably connected to the support frame through a bearing.
The upper end of the drilling cylinder body is provided with a cover body, and the upper end of the rotating power rod penetrates out of the cover body.
The soil sample inlets are 2 and are distributed in bilateral symmetry by taking the central axis of the drilling cylinder as a symmetry line.
The outer side wall of the drilling cylinder is provided with length scales along the longitudinal direction.
The invention has the beneficial effects that: the invention provides a soil sampling device for monitoring ecological environment, which is characterized in that a drilling cylinder is drilled to the depth to be sampled, then a rotating power rod in the drilling cylinder is rotated clockwise, a nut moves downwards along the rotating power rod, meanwhile, a blocking cover can move towards the middle of the drilling cylinder under the drive of a gear and a rack, so that a soil sample inlet is opened, meanwhile, a cutter head slides towards the soil sample inlet, extends out of the soil sample inlet under the action of a support spring and is contacted with soil to be collected, and the cutter head which moves downwards continuously cuts a soil sample from top to bottom along with the continuous downward movement of the nut along the rotating power rod, so that the soil sample falls into a soil sample storage cavity at the lower end in the drilling cylinder from the soil sample inlet; after soil sample collection ends, anticlockwise rotation rotates the power rod, then realization of synchronous linkage the shutoff cover shutoff soil sample entry and tool bit upward movement slide into and creep into inside the barrel, accomplish soil sampling. According to the invention, the opening of the soil sample inlet 21 and the automatic collection of the soil sample can be realized while linkage is realized through the rotation of the rotating power rod 19, and when the soil sample is not collected in the drilling process, the soil sample inlet 21 can be firmly blocked through the blocking cover 7, so that soil scraps at a non-sampling point in the drilling process are prevented from falling into the soil sample storage cavity 10. The invention realizes the purpose of effectively collecting the soil sample at the target sampling point by using as few structural components and as few operation steps as possible, has simple and convenient operation and is very suitable for being carried to the field for soil sampling operation at a specific depth.
Detailed Description
An embodiment of the present invention will be described in detail below with reference to the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the embodiment.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing technical solutions of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1-4, the embodiment of the invention provides a soil sampling device for monitoring ecological environment, which comprises a drilling cylinder 1, a drilling handle 20, a soil sample sampling mechanism and the like, wherein a drill bit 2 is arranged at the lower end of the drilling cylinder 1, a spiral chip groove and a spiral blade 18 are arranged on the side wall of the drilling cylinder 1, the soil is drilled into the soil through the drill bit 2 and the spiral blade 18, and the soil above a target sampling point is discharged out of the ground through the chip groove in the drilling process. The drilling cylinder 1 is of a hollow structure, the lower end of the cylinder wall of the drilling cylinder 1 is provided with a soil sample inlet 21, and when the drilling cylinder 1 drills downwards, the soil sample inlet 21 enters a target sampling point area, and a soil sample can be collected; the drilling handle 20 is arranged at the upper end of the drilling cylinder body 1 and is used for applying drilling power to the drilling cylinder body 1 during soil sampling and drilling so as to drill to a required sampling depth; the soil sample sampling mechanism comprises a rotating power rod 19, a soil sample inlet plugging mechanism, a nut 3, a soil sampling mechanism and the like, wherein the rotating power rod 19 is longitudinally arranged inside the drilling cylinder 1, the upper end of the rotating power rod 19 is provided with a rotating handle 11, and the lower end of the rotating power rod is provided with an external thread 6; the soil sample inlet plugging mechanism comprises a gear 9, and the gear 9 is coaxially connected to the lower end of the rotating power rod 19; the gear 9 is meshed with the rack 8, the rack 8 is connected with the sliding rail 22 in a sliding manner, the sliding rail 22 is fixed on the support 23, and the support 23 is fixed on the inner side wall of the drilling barrel 1; a soil sample inlet plugging cover 7 is arranged at one end of the rack 8 close to the side wall of the drilling cylinder body 1; the nut 3 is in threaded connection with the rotating power rod 19, the side wall of the nut 3 is fixedly connected with one end of the connecting rod 4, the middle part of the connecting rod 4 is provided with a sliding block 17, the sliding block 17 is in sliding connection with a longitudinal guide rail 16, and the longitudinal guide rail 16 is fixedly connected with the inner side wall of the drilling cylinder 1 through a fixing frame 25; the soil mining mechanism comprises a cutter head 15, the cutter head 15 is hinged to the other end of the connecting rod 4, a supporting spring 5 is connected between the cutter head 15 and the connecting rod 4, when the nut 3 is positioned at the upper end of the external thread 6, the cutter back of the cutter head 15 is pressed against and contacted with the inner side wall of the drilling barrel 1 under the supporting force of the supporting spring 5, a cutter head limiting block 14 is further arranged at one end of the connecting rod 4, which is connected with the cutter head 15, and the cutter head limiting block 14 is used for preventing the cutter head 15 from being excessively propped open along the supporting force direction of the supporting spring 5 when the cutter head 15 is separated from the inner; when the knife back of the knife head 15 is pressed against the inner side wall of the drilling cylinder 1 under the supporting force of the supporting spring 5, the soil sample inlet 21 is positioned below the knife head 15; when the rotating power rod 19 rotates clockwise under the overlooking state, the nut 3 moves downwards along the rotating power rod 19, meanwhile, the blocking cover 7 moves towards the center of the drilling cylinder 1 under the driving of the gear 9 and the rack 8, so as to open the soil sample inlet 21, meanwhile, the cutter head 15 moves towards the direction of the soil sample inlet 21 and extends out of the soil sample inlet 21 under the supporting force of the supporting spring 5 to be contacted with soil to be collected, the collection of the soil sample is started, the cutter head 15 of the extending soil sample inlet 21 cuts the soil sample from top to bottom along with the continuous downward movement of the nut 3 along the rotating power rod 19, so that the soil sample falls into the soil sample storage cavity 10 arranged at the lower end inside the drilling cylinder 1 through the soil sample inlet 21 until the cutter head 15 moves to the lower end position of the soil sample inlet 21, the collection of the soil sample is finished and then the rotating power lever 19 is rotated counterclockwise, so that the soil sample inlet 21 is gradually blocked by the blocking cover 7 and the cutter head 15 gradually moves upward and slides into the interior of the drilling cylinder 1 from the soil sample inlet 21. According to the invention, the opening of the soil sample inlet 21 and the automatic collection of the soil sample can be realized while linkage is realized through the rotation of the rotating power rod 19, and when the soil sample is not collected in the drilling process, the soil sample inlet 21 can be firmly blocked through the blocking cover 7, so that soil scraps at a non-sampling point in the drilling process are prevented from falling into the soil sample storage cavity 10. When the soil sample in the soil sample storage cavity 10 needs to be taken out, the drilling cylinder body 1 is inverted to pour the soil sample from the upper end of the drilling cylinder body, or the rotating power rod 19 is rotated clockwise, and when the blocking cover 7 is opened, the soil sample is poured from the soil sample inlet 21.
Further, the number of the soil sample inlets 21 is at least 2, the soil sample inlets are circumferentially distributed along the drilling cylinder body 1, the number of the soil sampling mechanisms is equal to that of the soil sample inlets 21, the soil sampling mechanisms are in one-to-one correspondence, and the soil samples can be efficiently collected through the plurality of soil sampling mechanisms and the soil sample inlets 21.
Furthermore, the rotating power rod 19 is arranged inside the drilling cylinder 1 through the support frame 13, and the rotating power rod 19 is rotatably connected to the support frame 13 through the bearing 24, so that the rotating power rod 19 can stably rotate, and meanwhile, a locking mechanism (for example, a clamping structure for clamping the rotating power rod to prevent the rotating power rod from rotating) can be set at the upper end of the rotating power rod, so that the rotating power rod can be firmly locked when the rotating power rod is not required to rotate.
Further, the upper end of the drilling cylinder body 1 is provided with a cover body 12, the upper end of the rotating power rod 19 penetrates out of the cover body 12, the middle part of the cover body is provided with a through hole for the rotating power rod 19 to penetrate out, and the cover body can be lifted upwards along the rotating power rod 19 so as to pour out a soil sample collected in the cover body or clean the inside of the cover body.
Further, the number of the soil sample inlets 21 is 2, and the soil sample inlets are symmetrically distributed on the left and right sides by taking the central axis of the drilling cylinder 1 as a symmetry line.
Furthermore, the length scales are arranged on the outer side wall of the drilling barrel 1 along the longitudinal direction of the drilling barrel, so that whether the drilling barrel 1 drills to the sampling depth of the sampling point or not is convenient to determine.
In summary, the invention provides a soil sampling device for monitoring ecological environment, a drilling cylinder is drilled to a depth to be sampled, then a rotating power rod in the drilling cylinder is rotated clockwise, a nut moves downwards along the rotating power rod, meanwhile, a plugging cover moves towards the middle of the drilling cylinder under the drive of a gear and a rack, so as to open a soil sample inlet, and meanwhile, after sliding towards the soil sample inlet, a cutter head extends out of the soil sample inlet under the action of a support spring and contacts with soil to be collected, and as the nut continues to move downwards along the rotating power rod, the cutter head which continues to move downwards cuts the soil sample from top to bottom, so that the soil sample falls into a soil sample storage cavity at the lower end in the drilling cylinder from the soil sample inlet; after soil sample collection ends, anticlockwise rotation rotates the power rod, then realization of synchronous linkage the shutoff cover shutoff soil sample entry and tool bit upward movement slide into and creep into inside the barrel, accomplish soil sampling. The invention realizes the purpose of effectively collecting the soil sample at the target sampling point by using as few structural components and as few operation steps as possible, has simple and convenient operation and is very suitable for being carried to the field for soil sampling operation at a specific depth.
The above disclosure is only for a few specific embodiments of the present invention, however, the present invention is not limited to the above embodiments, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.