A sampling device for saline-alkali land

Abstract

The invention relates to the technical field of saline-alkali soil sampling, and specifically to a sampling device for saline-alkali soil, comprising a support plate, a sampling tube, a drill bit and a handle, wherein the support plate is provided with a through hole, and the top of the sampling tube passes through the through hole, the drill bit is fixedly installed at the bottom of the sampling tube, and two handles are provided; the sampling device for saline-alkali soil can directly drill the sampling tube into the sampling point, and make multiple sampling ports of the sampling tube respectively located at the surface layer, middle layer and bottom layer of the soil, and when sampling, the surface layer, middle layer and bottom layer of the soil can be sampled simultaneously through the provided moving block, closing mechanism, driving mechanism and pushing mechanism, which can not only realize the maximum protection of the soil at the sampling point, but also realize the precise sampling of the surface layer, middle layer and bottom layer of the soil at the sampling point, and there is no need to drill into the sampling point for sampling multiple times, thereby further ensuring the sampling efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of saline-alkali land sampling, in particular to a sampling device for saline-alkali land. Background Art

[0002] Saline-alkali land is a type of soil with special properties, and corresponding measures need to be taken for its management and utilization. Therefore, it is necessary to regularly sample the saline-alkali land to understand the soil characteristics, and then formulate soil improvement plans based on the analysis results of the sampling, and monitor the improvement effects during the improvement process.

[0003] In addition, when sampling saline-alkali land soil, it is usually necessary to collect soil samples from the surface, middle and bottom layers to fully understand the distribution of soil salt and nutrients. However, when sampling saline-alkali land soil, although a sampling rod is used manually to drill and sample each layer of soil in turn, in this process, on the one hand, the drill rod needs to be drilled into the soil at different depths for sampling many times. This sampling method is likely to cause the soil at the sampling point to be unable to remain in its original state, and multiple drilling and sampling are likely to cause the removed samples to be mixed with soil from different layers, affecting the effect of soil sampling. At the same time, after the sampling is completed, it is necessary to use external tools to dig out the soil at the sampling rod in turn, and for multi-point sampling, this sampling method takes a long time. Summary of the invention

[0004] The object of the present invention is to provide a sampling device for saline-alkali land to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a sampling device for saline-alkali land, comprising a support plate, a sampling tube, a drill bit and a handle, wherein the support plate is provided with a through hole, and the top of the sampling tube passes through the through hole, the drill bit is fixedly installed at the bottom of the sampling tube, and two handles are provided, and the two handles are fixedly installed on the outside of the support plate, characterized in that:

[0006] The sampling tube is provided with a plurality of cavities, and sampling ports are provided on the sampling tube and at corresponding cavities, and the sampled soil enters through the sampling ports;

[0007] A moving block is slidably connected inside the cavity, and a moving groove in the shape of an I is provided on the moving block, and a closing mechanism is provided at the moving groove, and the closing mechanism opens or closes the sampling port, and a driving mechanism for synchronously driving a plurality of closing mechanisms is provided on the sampling tube, and the driving mechanism is used to connect the plurality of moving blocks;

[0008] A pushing mechanism is installed at the bottom of the moving block, and the pushing mechanism assists the soil to enter the sampling port when soil sampling is performed, and assists in pushing the soil down when the soil is taken out from the sampling port;

[0009] A matching mechanism is installed at the bottom of the cavity, and the matching mechanism matches with the pushing mechanism.

[0010] In some embodiments, the closing mechanism includes a closing plate, a first connecting seat, a connecting rod, a second connecting seat, a threaded sleeve and a threaded rod, and two closing plates are provided. When the sampling ports are in a closed state, the two closing plates are slidably connected to the two sampling ports, and the closing plates are slidably connected to the moving grooves, and the opposite sides of the two closing plates are both arranged in an arc shape;

[0011] The first connecting seat is provided with a plurality of first connecting seats, and the plurality of first connecting seats are respectively fixedly connected to the sides of the two closing plates close to each other. One end of the connecting support rod is hinged to the first connecting seat through a pin shaft, and the other end of the connecting support rod is hinged to the second connecting seat through a pin shaft. The second connecting seats are fixedly installed on the outside of the threaded sleeve, and the threaded sleeve is threadedly sleeved on the outside of the threaded rod. The threaded rod passes through the moving block and is connected to the driving mechanism. The threaded rod is rotatably connected to the moving block through a bearing, and the closing mechanism is provided to achieve the function of adjusting the sampling port.

[0012] In some embodiments, the pushing mechanism includes a synchronous housing, a fixed ring, a guide rod, a disturbance rod and an adjustment mechanism, the synchronous housing is fixedly mounted on the bottom of the moving block, the fixed ring is fixedly mounted on the bottom of the synchronous housing, a plurality of guide rods are provided, and the plurality of guide rods are respectively fixedly mounted on both sides of the fixed ring, a moving groove is provided at one end of the disturbance rod, and the disturbance rod is slidably sleeved on the outside of the guide rod through the moving groove;

[0013] The synchronous shell is provided with movable openings at positions corresponding to the plurality of disturbance rods, and the disturbance rods pass through the sampling openings through the movable openings when soil sampling is performed and are used to disturb the soil;

[0014] The adjusting mechanism is installed at the bottom of the moving block and located at the top of the synchronous shell. The adjusting mechanism is used to synchronously adjust multiple disturbance rods, and through the provided pushing mechanism, the function of assisting in taking out the sampled soil is achieved.

[0015] In some embodiments, a sealing ring is provided at the moving port, and the sealing ring is sleeved on the outside of the disturbance rod. Through the provided sealing ring, the disturbance rod is sealed relative to the inside of the moving port.

[0016] In some embodiments, the adjustment mechanism includes a rotating tube, a rotating disk, a limit rod and a rotating member. The rotating tube is rotatably connected to the top of the fixed ring, and the rotating disk is fixedly installed on the top of the rotating tube. Multiple arc grooves are respectively provided at both ends of the rotating disk. The limit rod is provided with multiple limit rods, and the limit rod slides through the arc grooves. The bottom of the limit rod is fixedly connected to the disturbance rod. The rotating member is installed at the bottom of the moving block and is used to drive the rotating disk. Through the provided adjustment mechanism, the function of adjusting multiple disturbance rods is realized.

[0017] In some embodiments, the rotating member includes a first rotating gear, a second rotating gear and a motor. A receiving groove is provided at the bottom of the moving block and deviated from its center. The motor is installed in the receiving groove. The output end of the motor is fixedly connected to the first rotating gear. The outer side of the first rotating gear is meshed with the second rotating gear, and the second rotating gear is fixedly installed on the rotating disk. The rotating disk is driven by the rotating member.

[0018] In some embodiments, the matching mechanism includes a telescopic part, a pushing block and a snap-in part. There are multiple telescopic parts, and the multiple telescopic parts are all installed inside the cavity. The tops of the multiple telescopic parts are fixedly installed on the bottom of the pushing block. The pushing block is slidably connected to the cavity. A positioning groove is provided on the pushing block, and the snap-in part is located at the positioning groove. Through the matching mechanism, the bottom of the cavity is relatively sealed.

[0019] In some embodiments, the telescopic member includes a supporting sleeve, a circular plate, a round rod and a buffer spring fixedly mounted inside the accommodating cavity. The circular plate is slidably connected inside the supporting sleeve, the round rod is fixedly mounted on the circular plate, and one end of the round rod passes through the supporting sleeve and is fixedly connected to the pushing block. The buffer spring is sleeved on the outside of the round rod, and the two ends of the buffer spring are respectively fixedly connected to the supporting sleeve and the circular plate. The pushing block is connected by the telescopic member.

[0020] In some embodiments, the clamping member includes an installation fixing plate, a clamping spring, a clamping plate and a clamping rod. Two fixing plates are provided, and the two fixing plates are fixedly installed inside the positioning groove. One end of the clamping spring is fixedly connected to the fixing plate, and the other end of the clamping spring is fixedly connected to the clamping plate. One end of the clamping rod is fixedly installed on the clamping plate, and when sampling the soil, one end of the clamping rod passes through the positioning groove and is clamped at the bottom of the sampling port, and the clamping member is provided to limit the bottom of the cavity by the clamping plate.

[0021] In some embodiments, the driving mechanism includes a first connecting sleeve, a second connecting sleeve, a synchronization rod, a stretching mechanism, a top plate and a rotating motor. The first connecting sleeve is provided with multiple first connecting sleeves, and the first connecting sleeve is used to fixedly connect multiple moving blocks. The bottom of the second connecting sleeve is fixedly installed on the moving block at the top of the sampling tube. The stretching mechanism is installed on the support plate, and the stretching mechanism is used to drive the second connecting sleeve. The synchronization rod is provided with multiple synchronization rods, and the multiple synchronization rods are respectively fixedly connected to two adjacent threaded rods at the head and tail, and the multiple synchronization rods are respectively rotatably connected to the corresponding first connecting sleeve and the second connecting sleeve. The top plate is installed on the top of the second connecting sleeve, and the rotating motor is fixedly installed on the top plate. The rotating motor is used to drive the synchronization rod at the top, and through the provided driving mechanism, the multiple moving blocks are pulled, and the multiple threaded rods can also be driven.

[0022] The present invention has at least the following beneficial effects:

[0023] When the present invention is in use, through the support plate and the sampling tube, and the multiple cavities and sampling ports connected to the cavities are equidistantly arranged at the sampling tube, so that when sampling saline-alkali soil, the sampling tube can be directly drilled into the sampling point, and the multiple sampling ports of the sampling tube are respectively located at the surface layer, middle layer and bottom layer of the soil, and when sampling, through the provided moving block, closing mechanism, driving mechanism and pushing mechanism, the surface layer, middle layer and bottom layer of the soil can be sampled simultaneously, which can not only achieve the maximum protection of the soil at the sampling point, but also achieve accurate sampling of the surface layer, middle layer and bottom layer of the soil at the sampling point, and there is no need to drill into the sampling point for sampling multiple times, which further ensures the sampling efficiency.

[0024] The sampling tube in the present invention, and its internal moving blocks and other mechanisms, not only realize multi-point sampling of the soil, but also after the sampling is completed, through the cooperation of the matching mechanism, the sampled soil can be quickly separated from the sampling port without manual digging, thereby speeding up the sampling entry and ensuring the rapid sampling of soil in saline-alkali land. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a side view of the overall structure of the present invention;

[0027] Figure 3 This is a schematic diagram of the internal structure of the sampling tube of the present invention;

[0028] Figure 4 This is a front view of the internal structure of the sampling tube of the present invention;

[0029] Figure 5 This is a schematic diagram of the sampling tube structure of the present invention;

[0030] Figure 6 It is a schematic diagram of the side cross-sectional structure of the moving block of the present invention;

[0031] Figure 7 For the present invention Figure 6 A schematic diagram of the enlarged structure of the middle A area;

[0032] Figure 8 It is a schematic diagram of the side cross-sectional structure of the moving block of the present invention;

[0033] Fig. 9 It is a schematic diagram of the closed plate structure of the present invention;

[0034] Fig.10 This is a schematic diagram of the structure of the rotating disk of the present invention;

[0035] Fig.11 It is a schematic diagram of the structure of the regulating mechanism of the present invention;

[0036] Fig.12 It is a schematic diagram of the side cross-sectional structure of the push block of the present invention;

[0037] Fig.13 It is a schematic diagram of the structure of the stretching mechanism of the present invention;

[0038] Fig.14 For the present invention Fig.13 Schematic diagram of the enlarged structure of area B in the middle.

[0039] In the figure: 1, support plate; 2, sampling tube; 21, cavity; 22, sampling port; 3, drill bit; 4, handle; 5, moving block; 51, moving groove; 52, receiving groove; 6, closing mechanism; 61, closing plate; 62, first connecting seat; 63, connecting support rod; 64, second connecting seat; 65, threaded sleeve; 66, threaded rod; 7, pushing mechanism; 71, synchronous housing; 711, moving port; 712, sealing ring; 72, fixing ring; 73, guide rod; 74, disturbance rod; 75, adjustment mechanism; 751, rotating tube; 752, rotating disk; 753, limit rod; 754, rotating member; 7541, first rotating gear; 7542, second rotating gear Moving gear; 7543, motor; 8, matching mechanism; 81, telescopic member; 811, supporting sleeve; 812, round plate; 813, round rod; 814, buffer spring; 82, pushing block; 821, positioning groove; 83, clamping member; 831, fixing plate; 832, clamping spring; 833, clamping plate; 834, clamping rod; 9, driving mechanism; 91, first connecting sleeve; 92, second connecting sleeve; 93, synchronous rod; 94, stretching mechanism; 941, protective shell; 942, synchronous motor; 943, first synchronous gear; 944, second synchronous gear; 945, synchronous sleeve; 946, limit strip; 95, top plate; 96, rotating motor. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Embodiment 1

[0041] See also Figures 1 to 3 A sampling device for saline-alkali land comprises a support plate 1, a sampling tube 2, a drill bit 3 and a handle 4. A through hole is provided on the support plate 1, and the top of the sampling tube 2 passes through the through hole. The drill bit 3 is fixedly installed at the bottom of the sampling tube 2. Two handles 4 are provided, and the two handles 4 are fixedly installed on the outer side of the support plate 1.

[0042] Specifically, when sampling the soil at the sampling point of saline-alkali land, the drill bit 3 at the bottom of the sampling tube 2 is aligned with the position of the sampling point. Then, by turning the handle 4 with force and applying downward pressure at the same time, the sampling tube 2 can be rotated along the inside of the soil along with the drill bit 3. The sampling tube 2 is provided with a plurality of cavities 21, and a sampling port 22 is provided on the sampling tube 2 and corresponding to the cavity 21. The sampled soil enters through the sampling port 22, and in the process of the sampling tube 2 moving downward along the soil of the saline-alkali land, the sampling port 22 remains in a relatively closed state. In this embodiment, the sampling port 22 is provided with three groups, that is, three cavities 21 correspond to two sampling ports 22 respectively, so as to be used for sampling the surface, middle and bottom layers of the saline-alkali land.

[0043] See also Figures 3 to 5 , a moving block 5 is slidably connected inside the cavity 21, and in this example, the moving block 5 is relatively matched and connected with the inside of the cavity 21, a moving groove 51 in the shape of an I is provided on the moving block 5, and a closing mechanism 6 is provided at the moving groove 51, and the closing mechanism 6 opens or closes the sampling port 22, and a driving mechanism 9 for synchronously driving a plurality of closing mechanisms 6 is provided on the sampling tube 2, and the driving mechanism 9 is used to connect the plurality of moving blocks 5;

[0044] See also Figures 8 to 9 The closing mechanism 6 includes a closing plate 61, a first connecting seat 62, a connecting support rod 63, a second connecting seat 64, a threaded sleeve 65 and a threaded rod 66. Two closing plates 61 are provided. The two closing plates 61 are slidably connected at the two sampling ports 22 when the sampling port 22 is in a closed state, and the closing plates 61 are slidably connected to the moving groove 51. The opposite sides of the two closing plates 61 are both set in an arc shape. In this embodiment, the top of the closing plate 61 and the connection with the sampling port 22 are set in an arc shape, so that the closing plate 61 can seal the sampling port 22. At the same time, the outer side of the closing plate 61 can also be set to be made of sealing material, so that when the two closing plates 61 move to the sampling port 22, the outer surface of the closing plate 61 is the same size as the outer surface of the sampling tube 2 to prevent the entry of soil. At the same time, in the closed state, the closing plate 61 is relatively sealed with the sampling port 22 to maintain a minimum gap, which further prevents the entry of other soil.

[0045] A plurality of first connecting seats 62 are provided, and the plurality of first connecting seats 62 are respectively fixedly connected to the sides of the two closing plates 61 close to each other, one end of the connecting support rod 63 is hinged to the first connecting seat 62 through a pin shaft, and the other end of the connecting support rod 63 is hinged to the second connecting seat 64 through a pin shaft, and the second connecting seats 64 are all fixedly installed on the outside of the threaded sleeve 65, the threaded sleeve 65 is threadedly sleeved on the outside of the threaded rod 66, the threaded rod 66 passes through the moving block 5, and the threaded rod 66 is connected to the driving mechanism 9, and the threaded rod 66 is rotatably connected to the moving block 5 through a bearing;

[0046] Specific implementation process: when the sampling tube 2 has been moved down to the sampling position, that is, the three groups of sampling ports 22 of the sampling tube 2 are respectively moved down to the surface layer, middle layer and bottom layer of the saline-alkali soil, that is, the two sampling ports at the top of the sampling tube 2 are located at the surface layer of the soil, and the two sampling ports at the bottom of the sampling tube 2 are located at the bottom layer of the soil;

[0047] At this time, it is necessary to sample the soil of the corresponding layer. At this time, the driving mechanism 9 is operated to make the three threaded rods 66 rotate synchronously. When the threaded rod 66 rotates, a driving force is provided to the threaded sleeve 65 on its outer side. Since the threaded sleeve 65 is limited by the multiple connecting rods 63 and the two closing plates 61 on its outer side, the threaded sleeve 65 moves upward along the moving groove 51. When the threaded sleeve 65 moves upward, the two closing plates 61 are driven to separate from the sampling port 22 by the multiple connecting rods 63, and the two closing plates 61 move to the inside of the moving groove 51.

[0048] Please refer to Figures 8 to 11 A pushing mechanism 7 is installed at the bottom of the moving block 5. When the pushing mechanism 7 is sampling the soil, it assists the soil to enter the sampling port 22, and when the soil is taken out from the sampling port 22, the pushing mechanism 7 assists in pushing the soil down;

[0049] The pushing mechanism 7 includes a synchronous housing 71, a fixed ring 72, a guide rod 73, a disturbance rod 74 and an adjustment mechanism 75. The synchronous housing 71 is fixedly mounted on the bottom of the moving block 5, the fixed ring 72 is fixedly mounted on the bottom of the synchronous housing 71, and a plurality of guide rods 73 are provided. In this embodiment, six guide rods 73 are provided, and the six guide rods 73 are distributed on one side of the fixed ring 72 in a group of three. The plurality of guide rods 73 are fixedly mounted on both sides of the fixed ring 72, respectively. A moving groove 51 is provided at one end of the disturbance rod 74, and the disturbance rod 74 is slidably sleeved on the outer side of the guide rod 73 through the moving groove 51.

[0050] A moving opening 711 is provided on the synchronous housing 71 and corresponds to the positions of the plurality of disturbance rods 74. A sealing ring 712 is provided at the moving opening 711. The sealing ring 712 is sleeved on the outside of the disturbance rod 74, and the sealing ring 712 is relatively sealed with the moving opening 711. Thus, when the disturbance rod 74 reciprocates along the moving ring, the sealing ring 712 also scrapes the soil on the outside of the disturbance rod 74 to prevent the disturbance rod 74 from carrying soil into the synchronous housing 71. When the disturbance rod 74 is sampling soil, the disturbance rod 74 passes through the sampling port 22 through the moving opening 711 and is used to disturb the soil.

[0051] Please refer to Figure 10 to Figure 11The adjustment mechanism 75 is installed at the bottom of the moving block 5 and located at the top of the synchronization housing 71 . The adjustment mechanism 75 is used to synchronously adjust the multiple disturbance rods 74 .

[0052] The adjusting mechanism 75 includes a rotating tube 751, a rotating disk 752, a limiting rod 753 and a rotating member 754. The rotating tube 751 is rotatably connected to the top of the fixed ring 72, and the rotating disk 752 is fixedly installed on the top of the rotating tube 751. Both ends of the rotating disk 752 are respectively provided with a plurality of arc grooves, and the limiting rod 753 is provided with a plurality of arc grooves. In this example, three arc grooves are respectively provided at both ends of the rotating disk 752, and the arc grooves at both ends of the rotating disk 752 face opposite directions, and the limiting rod 753 slides through the arc groove, and the bottom of the limiting rod 753 is fixedly connected to the disturbance rod 74, and the rotating member 754 is installed at the bottom of the moving block 5 and is used to drive the rotating disk 752.

[0053] The rotating member 754 includes a first rotating gear 7541, a second rotating gear 7542 and a motor 7543. A receiving groove 52 is provided at the bottom of the moving block 5 and deviated from its center. The motor 7543 is installed in the receiving groove 52. The output end of the motor 7543 is fixedly connected to the first rotating gear 7541. The second rotating gear 7542 is meshedly connected to the outer side of the first rotating gear 7541, and the second rotating gear 7542 is fixedly installed on the rotating disk 752.

[0054] Specific implementation process: when it is necessary to sample the surface, middle and bottom layers of the saline-alkali land, and the three groups of sampling ports 22 at the corresponding sampling tube 2 are moved to the corresponding sampling depths respectively, as the three moving blocks 5 move up along the cavity 21 respectively, at this time, the synchronous shell 71 at the bottom of the moving block 5 moves up along the cavity 21 synchronously, and until the synchronous shell 71 moves to the sampling port 22 and continues to move up along the sampling port 22, the corresponding motor 7543 runs, thereby driving the first rotating gear 7541 to rotate, and when the first rotating gear 7541 rotates, it synchronously drives the second rotating gear 7542 to rotate, and the second rotating gear 7542 drives the rotating gear 7543 to rotate. The rotating disk 752 rotates, and when the six arc grooves on the rotating disk 752 rotate respectively relative to the limiting rod 753, and because the limiting rod 753 is connected to the disturbance rod 74, and the disturbance rod 74 is limited by the guide rod 73, one end of the plurality of disturbance rods 74 passes through the moving port 711 and the sampling port 22 respectively, and tamper the soil at the required sampling position to prevent the formation of a borehole due to the downward movement of the sampling tube 2, resulting in the sampled soil being unable to enter the sampling port 22. In this embodiment, the motor 7543 reciprocates, so that the plurality of disturbance rods 74 reciprocate at the sampling port 22 and tamper the soil structure, so that the soil is scattered and enters the sampling port 22;

[0055] When the bottom of the synchronous housing 71 and the bottom of the sampling port 22 are at the same level, the motor 7543 stops running, so that one end of the plurality of disturbance rods 74 moves to the inside of the synchronous housing 71;

[0056] When the bottom of the synchronous shell 71 and the bottom of the sampling port 22 are at the same level, the moving block 5 stops moving. At this time, as the sampling rod moves upward along the soil, the soil of the corresponding depth is further completely accumulated at the sampling port 22, thereby realizing accurate sampling of multiple layers of soil.

[0057] When sampling is completed, the sampling tube 2 is lifted horizontally, and a sampling bag is placed on the outside of the sampling port 22. The moving block 5 is moved along the sampling port 22, and the soil at the sampling port 22 is pushed simultaneously, and the soil falls into the sampling bag along the sampling port 22, so that the sampled soil can be quickly collected.

[0058] See also Figures 3 to 5 , Figure 8 as well as Fig.12 A matching mechanism 8 is installed at the bottom of the cavity 21, and the matching mechanism 8 cooperates with the pushing mechanism 7. The matching mechanism 8 includes a telescopic member 81, a pushing block 82 and a clamping member 83. A plurality of telescopic members 81 are provided, and the plurality of telescopic members 81 are all installed inside the cavity 21, and the tops of the plurality of telescopic members 81 are fixedly installed on the bottom of the pushing block 82. The pushing block 82 is slidably connected with the cavity 21. A positioning groove 821 is provided on the pushing block 82, and the clamping member 83 is located at the positioning groove 821. In this embodiment, the pushing block 82 and the cavity 21 are relatively matched, so that the pushing block 82 and the cavity 21 are kept relatively sealed, thereby preventing soil from entering.

[0059] The telescopic member 81 includes a supporting sleeve 811, a circular plate 812, a round rod 813 and a buffer spring 814 fixedly installed inside the accommodating cavity. The circular plate 812 is slidably connected inside the supporting sleeve 811, the round rod 813 is fixedly installed on the circular plate 812, and one end of the round rod 813 passes through the supporting sleeve 811 and is fixedly connected to the pushing block 82. The buffer spring 814 is sleeved on the outside of the round rod 813, and the two ends of the buffer spring 814 are respectively fixedly connected to the supporting sleeve 811 and the circular plate 812.

[0060] The clamping member 83 includes an installation fixing plate 831, a clamping spring 832, a clamping plate 833 and a clamping rod 834. Two fixing plates 831 are provided. The two fixing plates 831 are fixedly installed inside the positioning groove 821. One end of the clamping spring 832 is fixedly connected to the fixing plate 831, and the other end of the clamping spring 832 is fixedly connected to the clamping plate 833. One end of the clamping rod 834 is fixedly installed on the clamping plate 833, and when sampling the soil, one end of the clamping rod 834 passes through the positioning groove 821 and is clamped at the bottom of the sampling port 22.

[0061] Specific implementation process: when the moving block 5 moves upward along the inside of the cavity 21, the synchronous shell 71 is separated from the pushing block 82. At this time, the pushing block 82 is connected by the round rod 813, the buffer spring 814, the circular plate 812 and the supporting sleeve 811. At this time, the buffer spring 814 has a reverse driving force, so that the pushing block 82 is pushed by the round rod 813 to move upward along the inside of the cavity 21 synchronously, and until the synchronous shell 71 is separated from the pushing block 82, the pushing block 82 moves to the sampling port 22. At this time, the clamping spring 832 inside the pushing block 82 has a reverse elastic force, so that the clamping rod 834 moves along the positioning groove 821 to the sampling port 22. At this time, the pushing block 82 is clamped at the sampling port 22 due to the limiting action of the two clamping rods 834 thereon, thereby realizing the sealing of the cavity 21 at the bottom of the sampling port 22 to prevent soil from entering the cavity 21 at the bottom of the pushing block 82.

[0062] Please refer to Figures 4 to 7 as well as Figure 13 to Figure 14 The driving mechanism 9 includes a first connecting sleeve 91, a second connecting sleeve 92, a synchronous rod 93, a stretching mechanism 94, a top plate 95 and a rotating motor 96. The first connecting sleeve 91 is provided with a plurality of first connecting sleeves 91, and the first connecting sleeve 91 is used to fix the plurality of moving blocks 5. The bottom of the second connecting sleeve 92 is fixedly mounted on the moving block 5 at the top of the sampling tube 2. The stretching mechanism 94 is mounted on the support plate 1, and the stretching mechanism 94 is used to drive the second connecting sleeve 92. There are a plurality of synchronous rods 93, and the plurality of synchronous rods 93 are respectively fixedly connected to the two threaded rods 66 adjacent to each other at the head and tail, and the plurality of synchronous rods 93 are respectively rotatably connected to the corresponding first connecting sleeve 91 and the second connecting sleeve 92. The top plate 95 is mounted on the top of the second connecting sleeve 92, and the rotating motor 96 is fixedly mounted on the top plate 95. The rotating motor 96 is used to drive the synchronous rod 93 at the top.

[0063] That is, in this example, the three moving blocks 5, the two moving blocks 5 at the bottom are connected to each other through two first connecting sleeves 91, and the bottom of the moving block 5 at the top is fixedly connected to the moving block 5 at the bottom thereof through the first connecting sleeve 91, and the top thereof is connected to the stretching mechanism 94 through the second connecting sleeve 92, so that the three moving blocks 5 can be operated synchronously through the stretching mechanism 94, and the first connecting sleeve 91 in the middle does not affect the sampling of the soil when the moving block 5 deviates from the sampling port 22;

[0064] At the same time, in this example, the synchronization housing 71, the cavity 21, the rotating disk 752, and the second rotating gear are all provided with movable holes for the synchronization rod 93 to pass through, so that when the rotating motor 96 drives the synchronization rod 93 to run, it can ensure that the synchronization rod 93 drives multiple threaded rods 66 to rotate synchronously. Embodiment 2

[0065] Please refer to Fig.14 , Embodiment 2 is a further supplementary description of Embodiment 1, specifically: the stretching mechanism 94 includes a protective shell 941, a synchronous motor 942, a first synchronous gear 943, a second synchronous gear 944, a synchronous sleeve 945 and a limit bar 946, the protective shell 941 is fixedly mounted on the support plate 1, and the synchronous motor 942 is fixedly mounted inside the protective shell 941, the output end of the synchronous motor 942 is fixedly connected to the first synchronous gear 943, and the first synchronous gear 943 is meshed with the second synchronous gear 944, and the second synchronous gear 944 is fixedly sleeved on the outside of the synchronous sleeve 945;

[0066] An internal thread is provided inside the synchronization sleeve 945, and an external thread is provided on the outer side of the top of the second connecting sleeve 92. The second connecting sleeve 92 is rotatably connected to the top of the sampling tube 2 through a bearing seat. The synchronization sleeve 945 is threadedly sleeved on the outer side of the second connecting sleeve 92. Two limit grooves are provided on the outer side of the second connecting sleeve 92. Two limit bars 946 are respectively slidably connected to the limit grooves, and the limit bars 946 are respectively fixedly connected to the top of the sampling tube 2.

[0067] Therefore, in the process of moving multiple moving blocks 5 up or down along the cavity 21, the synchronous motor 942 is operated, so that the first synchronous gear 943 drives the second synchronous gear 944 to rotate, and further causes the synchronous sleeve 945 to rotate relative to the second connecting sleeve 92, and provides driving force for the second connecting sleeve 92. Since the second connecting sleeve 92 is limited by the two limit bars 946, the second connecting sleeve 92 further drives the top moving block 5 to move, and the remaining moving blocks 5 are moved synchronously under the connection of the first connecting sleeve 91.

[0068] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0069] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sampling device for saline-alkali land, comprising a support plate (1), a sampling tube (2), a drill bit (3) and a handle (4), wherein the support plate (1) is provided with a through hole, and the top of the sampling tube (2) passes through the through hole, the drill bit (3) is fixedly mounted on the bottom of the sampling tube (2), and two handles (4) are provided, and the two handles (4) are fixedly mounted on the outside of the support plate (1), characterized in that: The sampling tube (2) is provided with a plurality of cavities (21), and sampling ports (22) are provided on the sampling tube (2) and corresponding to the cavities (21), and the sampled soil enters through the sampling ports (22); A moving block (5) is slidably connected inside the cavity (21), the moving block (5) is provided with an I-shaped moving groove (51), and a closing mechanism (6) is provided at the moving groove (51), the closing mechanism (6) opens or closes the sampling port (22), and a driving mechanism (9) for synchronously driving a plurality of closing mechanisms (6) is provided on the sampling tube (2), and the driving mechanism (9) is used to connect the plurality of moving blocks (5); A pushing mechanism (7) is installed at the bottom of the moving block (5), and when soil sampling is performed, the pushing mechanism (7) assists the soil to enter the sampling port (22), and when the soil is taken out from the sampling port (22), the pushing mechanism (7) assists in pushing the soil to fall; A matching mechanism (8) is installed at the bottom of the cavity (21), and the matching mechanism (8) and the pushing mechanism (7) cooperate with each other; The matching mechanism (8) comprises a telescopic member (81), a pushing block (82) and a clamping member (83); a plurality of the telescopic members (81) are provided, and the plurality of telescopic members (81) are all installed inside the cavity (21), and the tops of the plurality of telescopic members (81) are fixedly installed on the bottom of the pushing block (82) with respect to each other; the pushing block (82) is slidably connected to the cavity (21); a positioning groove (821) is provided on the pushing block (82), and the clamping member (83) is located at the positioning groove (821).

2. A sampling device for saline-alkali land according to claim 1, characterized in that: The closing mechanism (6) comprises a closing plate (61), a first connecting seat (62), a connecting support rod (63), a second connecting seat (64), a threaded sleeve (65) and a threaded rod (66), wherein two closing plates (61) are provided, and the two closing plates (61) are slidably connected to the two sampling ports (22) when the sampling ports (22) are in a closed state, and the closing plates (61) are slidably connected to the moving groove (51), and opposite sides of the two closing plates (61) are both arranged in an arc shape; A plurality of the first connecting seats (62) are provided, and the plurality of the first connecting seats (62) are respectively fixedly connected to the sides of the two closing plates (61) close to each other. One end of the connecting support rod (63) is hinged to the first connecting seat (62) via a pin, and the other end of the connecting support rod (63) is hinged to the second connecting seat (64) via a pin. The second connecting seats (64) are fixedly mounted on the outside of a threaded sleeve (65). The threaded sleeve (65) is threadedly sleeved on the outside of a threaded rod (66). The threaded rod (66) passes through the moving block (5), and the threaded rod (66) is connected to the driving mechanism (9). The threaded rod (66) is rotatably connected to the moving block (5) via a bearing.

3. A sampling device for saline-alkali land according to claim 1, characterized in that: The pushing mechanism (7) comprises a synchronous housing (71), a fixed ring (72), a guide rod (73), a disturbance rod (74) and an adjustment mechanism (75); the synchronous housing (71) is fixedly mounted on the bottom of the moving block (5); the fixed ring (72) is fixedly mounted on the bottom of the synchronous housing (71); a plurality of guide rods (73) are provided, and the plurality of guide rods (73) are respectively fixedly mounted on both sides of the fixed ring (72); a moving groove (51) is provided at one end of the disturbance rod (74), and the disturbance rod (74) is slidably sleeved on the outer side of the guide rod (73) through the moving groove (51); The synchronous housing (71) is provided with a moving opening (711) at positions corresponding to the plurality of disturbance rods (74), and when the disturbance rods (74) are sampling soil, they pass through the sampling opening (22) through the moving opening (711) and are used to disturb the soil; The adjustment mechanism (75) is installed at the bottom of the moving block (5) and located at the top of the synchronization housing (71), and the adjustment mechanism (75) is used to synchronously adjust the multiple disturbance rods (74).

4. A sampling device for saline-alkali land according to claim 3, characterized in that: A sealing ring (712) is provided at the moving opening (711), and the sealing ring (712) is sleeved on the outside of the disturbance rod (74).

5. A sampling device for saline-alkali land according to claim 3, characterized in that: The regulating mechanism (75) comprises a rotating tube (751), a rotating disk (752), a limiting rod (753) and a rotating member (754); the rotating tube (751) is rotatably connected to the top of the fixed ring (72); the rotating disk (752) is fixedly mounted on the top of the rotating tube (751); two ends of the rotating disk (752) are respectively provided with a plurality of arc grooves; the limiting rod (753) is provided with a plurality of limiting rods (753), and the limiting rod (753) slides through the arc grooves; the bottom of the limiting rod (753) is fixedly connected to the disturbance rod (74); and the rotating member (754) is mounted on the bottom of the moving block (5) and is used to drive the rotating disk (752).

6. A sampling device for saline-alkali land according to claim 5, characterized in that: The rotating member (754) comprises a first rotating gear (7541), a second rotating gear (7542) and a motor (7543); a receiving groove (52) is provided at the bottom of the moving block (5) and deviated from the center of the circle; the motor (7543) is mounted at the receiving groove (52); an output end of the motor (7543) is fixedly connected to the first rotating gear (7541); the second rotating gear (7542) is meshedly connected to the outer side of the first rotating gear (7541); and the second rotating gear (7542) is fixedly mounted on the rotating disk (752).

7. A sampling device for saline-alkali land according to claim 1, characterized in that: The telescopic member (81) comprises a supporting sleeve (811), a circular plate (812), a round rod (813) and a buffer spring (814) fixedly mounted inside the accommodating cavity; the circular plate (812) is slidably connected inside the supporting sleeve (811); the round rod (813) is fixedly mounted on the circular plate (812); one end of the round rod (813) passes through the supporting sleeve (811) and is fixedly connected to the pushing block (82); the buffer spring (814) is sleeved outside the round rod (813); and two ends of the buffer spring (814) are respectively fixedly connected to the supporting sleeve (811) and the circular plate (812).

8. A sampling device for saline-alkali land according to claim 1, characterized in that: The clamping member (83) comprises a mounting fixing plate (831), a clamping spring (832), a clamping plate (833) and a clamping rod (834); two fixing plates (831) are provided, and the two fixing plates (831) are fixedly mounted inside the positioning groove (821); one end of the clamping spring (832) is fixedly connected to the fixing plate (831), and the other end of the clamping spring (832) is fixedly connected to the clamping plate (833); one end of the clamping rod (834) is fixedly mounted on the clamping plate (833); and when soil sampling is performed, one end of the clamping rod (834) passes through the positioning groove (821) and is clamped to the bottom of the sampling port (22).

9. A sampling device for saline-alkali land according to claim 2, characterized in that: The driving mechanism (9) comprises a first connecting sleeve (91), a second connecting sleeve (92), a synchronization rod (93), a stretching mechanism (94), a top plate (95) and a rotating motor (96), wherein a plurality of the first connecting sleeves (91) are provided, and the first connecting sleeves (91) are used to fixedly connect a plurality of moving blocks (5), and the bottom of the second connecting sleeve (92) is fixedly mounted on the moving block (5) at the top end of the sampling tube (2), and the stretching mechanism (94) is mounted on the support plate (1), and the stretching mechanism (94) is used to The second connecting sleeve (92) is driven by the synchronous rod (93), a plurality of the synchronous rods (93) are provided, the plurality of the synchronous rods (93) are respectively fixedly connected to two threaded rods (66) adjacent to each other at the head and tail, and the plurality of the synchronous rods (93) are respectively rotatably connected inside the corresponding first connecting sleeve (91) and the second connecting sleeve (92), the top plate (95) is mounted on the top of the second connecting sleeve (92), and the rotating motor (96) is fixedly mounted on the top plate (95), and the rotating motor (96) is used to drive the synchronous rod (93) at the top.

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