A soil sample collection device

Abstract

The application discloses a kind of soil sample collection equipment, it is related to soil collection technical field, including rack, limit frame and lifting plate, the limit frame is installed in the both sides position of rack, the lifting plate is slidably connected on limit frame, lifting drive assembly for driving lifting plate up and down sliding is installed on the rack, sampling tube is rotatably connected on the lifting plate, the cooperation of the present application by sampling tube, ring groove drill bit and soil conveying component carries out collection to soil sample, so that soil sample and the inner wall between sampling tube keep certain gap, avoid the influence that soil sample is subjected to the pressure and downward thrust generated by sampling tube inner wall in sampling process, so that soil sample keeps original state, improve the quality of soil sample collection and subsequent soil detection accuracy, simultaneously make the annular groove formed around soil sample, avoid sampling tube lower end portion in the process of moving downward extrude upper layer soil to soil lower layer and cause soil sample pollution.

Description

Technical Field

[0001] This invention relates to the field of soil sampling technology, and more specifically to a soil sample collection device. Background Technology

[0002] Soil sampling technology is a crucial component of soil information acquisition and a key technology in precision agriculture. Soil sampling equipment, as the foundation and carrier of soil sampling technology, is indispensable. This equipment should meet requirements as much as possible, obtaining soil samples that are as close to their original state as possible to facilitate soil fertility testing, soil structure assessment, bulk density measurement, and soil structure analysis. However, existing soil sampling equipment still has the following shortcomings:

[0003] 1. When obtaining soil samples, the sampling tube is usually inserted into the soil by impact or rotation. Since the soil sample is always in contact with the inner wall of the sampling tube, it is constantly subjected to friction and rotational disturbance as the tube moves into the soil. Under these circumstances, the original state of the soil sample cannot be guaranteed, thus affecting the quality of the soil sample. While installing a sampling head with an inner diameter smaller than that of the sampling tube can overcome this problem, this type of sampling tube will squeeze some of the upper soil to the lower layer as it moves downward in the soil, causing mixed contamination of the upper and lower soil layers, thus affecting the accuracy of soil testing.

[0004] 2. Existing soil sampling equipment requires multiple removals of the upper soil layer when collecting soil samples from deeper layers. After collecting soil samples at the predetermined depth, manual backfilling and restoration of the soil at the sampling location is required, making the operation process quite cumbersome.

[0005] Therefore, a soil sample collection device is needed to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide a soil sample collection device to solve the problems existing in the prior art as described in the background section.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A soil sample collection device includes a frame, a limiting frame, and a lifting plate. The limiting frame is installed on both sides of the frame. The lifting plate is slidably connected to the limiting frame. A lifting drive assembly for driving the lifting plate to slide up and down is installed on the frame. A sampling tube is rotatably connected to the lifting plate. A rotation drive assembly for driving the sampling tube to rotate is also provided on the lifting plate. A grooved drill bit is installed at the lower end of the sampling tube. A soil conveying assembly for conveying soil is provided on the grooved drill bit. A soil cutting assembly for cutting soil samples is also provided on the sampling tube.

[0009] Preferably, the annular groove drill bit consists of an annular plate and two annular sleeves of different diameters. The two annular sleeves are welded to the inner and outer edges of the annular plate, respectively. A through hole is provided in the middle of the annular groove drill bit and is connected to the sampling tube. The lower end face of the annular sleeve is configured with a serrated structure.

[0010] Preferably, the soil conveying assembly includes a storage hopper, a conveying pipe, and an installation plate. The storage hopper is sleeved on the sampling pipe and located on its upper side. The conveying pipe is connected between the annular groove drill bit and the storage hopper. The sampling pipe is connected to the installation plate. A spiral conveying rod is rotatably connected to the installation plate and is located inside the conveying pipe. A second toothed ring is fixedly connected to the lifting plate. A driven gear that meshes with the second toothed ring is keyed to the spiral conveying rod.

[0011] Preferably, the lifting drive assembly includes a guide column, a lead screw, and a first motor. The guide column and the lead screw are respectively connected to the limiting frames on the left and right sides of the frame. One end of the lifting plate is slidably connected to the guide column, and the other end of the lifting plate is threadedly connected to the lead screw. The first motor for driving the lead screw to rotate is installed on the frame.

[0012] Preferably, the rotary drive assembly includes a first gear ring, a second motor, and a drive gear. The first gear ring is keyed to the sampling tube, the second motor is mounted on the lifting plate via a bracket, and the output end of the second motor is keyed to a drive gear that meshes with the first gear ring.

[0013] Preferably, the soil sample cutting assembly includes a support groove block, a cutting plate, and a drive rod. The support groove block is disposed on the outer wall of the sampling tube. The cutting plate is slidably connected to the support groove block, and one end of the cutting plate extends into the interior of the sampling tube. The side wall of the sampling tube is slidably connected to the drive rod, and the lower end of the drive rod is connected to a drive block for pushing the cutting plate to slide. A cylinder for driving the drive rod to slide is installed on the sampling tube.

[0014] Preferably, it also includes a drill bit cleaning assembly for cleaning the annular groove drill bit. The drill bit cleaning assembly includes a connecting rod, a drive ring, and a cleaning frame. The connecting rod is slidably connected to the annular groove drill bit. The upper end of the connecting rod is connected to the drive ring, and the lower end of the connecting rod is connected to the cleaning frame. A return spring is connected between the drive ring and the annular groove drill bit.

[0015] Preferably, the frame includes a base plate, support columns, and a top plate, the top plate being connected to the base plate via the support columns, and the base plate having a through hole for the sampling tube to pass through.

[0016] Preferably, the cleaning frame is equipped with loose soil blocks for breaking up the soil.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. This invention collects soil samples by using a sampling tube, a grooved drill bit, and a soil delivery assembly. This maintains a certain gap between the soil sample and the inner wall of the sampling tube, preventing the soil sample from being affected by pressure generated by the inner wall of the sampling tube and rotational disturbances during the sampling process. This keeps the soil sample in its original state, improves the quality of soil sample collection and the accuracy of subsequent soil testing, and at the same time removes the soil around the soil sample to form a groove, preventing the lower end of the sampling tube from squeezing the upper soil layer to the lower soil layer and causing soil sample contamination during downward movement.

[0019] 2. The present invention facilitates the transport of soil within the annular groove drill bit through the setting of the soil transport component, making it easier for the annular groove drill bit to run into deeper soil layers. After soil sampling is completed, it can automatically backfill part of the soil in the sampling hole, preventing soil from spilling around the sampling hole. It eliminates the need for manual cleaning of the sampling site, simplifies the subsequent steps of soil sample collection, and improves the convenience of soil sample collection.

[0020] 3. This invention automatically cleans the inner wall of the annular groove drill bit by driving the drill bit cleaning component to clean the inner wall of the annular groove drill bit during the operation of the soil sample cutting component, which facilitates the next collection of soil samples by the staff. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the structure of the present invention without the frame.

[0023] Figure 3 For the present invention Figure 2 A magnified view of a portion of point A in the middle.

[0024] Figure 4 For the present invention Figure 2 A magnified view of a portion of point B in the middle.

[0025] Figure 5 This is a schematic diagram of the cross-sectional structure of the sampling tube of the present invention.

[0026] Figure 6 For the present invention Figure 5 A magnified view of a portion of point C in the middle.

[0027] Figure 7 and Figure 8 These are schematic diagrams of the annular groove drill bit of the present invention from different perspectives.

[0028] In the diagram: 1. Frame; 11. Base plate; 12. Support column; 13. Top plate; 2. Limiting frame; 3. Lifting plate; 4. Lifting drive assembly; 41. Guide column; 42. Lead screw; 43. First motor; 5. Sampling tube; 6. Rotation drive assembly; 61. First gear ring; 62. Second motor; 63. Drive gear; 7. Circular groove drill bit; 8. Soil conveying assembly; 81. Storage hopper; 82. Conveying pipe; 83. Mounting plate; 84. Spiral conveying rod; 85. Driven gear; 86. Second gear ring; 9. Soil sample cutting assembly; 91. Support groove block; 92. Cutting plate; 93. Drive rod; 94. Drive block; 95. Cylinder; 10. Drill bit cleaning assembly; 101. Connecting rod; 102. Drive ring; 103. Cleaning frame; 104. Return spring; 14. Loose soil block. Detailed Implementation

[0029] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0030] Please see Figure 1-8 The present invention provides a technical solution:

[0031] A soil sample collection device includes a frame 1, a limiting frame 2, and a lifting plate 3. The frame 1 includes a base plate 11, a support column 12, and a top plate 13. The top plate 13 is connected to the base plate 11 via the support column 12. The base plate 11 has a through hole for a sampling tube 5 to pass through. The limiting frame 2 is installed on both sides of the frame 1. The lifting plate 3 is slidably connected to the limiting frame 2. A lifting drive assembly 4 for driving the lifting plate 3 to slide up and down is installed on the frame 1. The lifting drive assembly 4 includes... The system includes a guide column 41, a lead screw 42, and a first motor 43. The guide column 41 and the lead screw 42 are respectively connected to the limiting frames 2 on the left and right sides of the frame 1. One end of the lifting plate 3 is slidably connected to the guide column 41, and the other end of the lifting plate 3 is threadedly connected to the lead screw 42. The frame 1 is equipped with a first motor 43 for driving the lead screw 42 to rotate. A sampling tube 5 is rotatably connected to the lifting plate 3. The lifting drive assembly 4 can drive the sampling tube 5 to move up and down, making it easy for the sampling tube 5 to enter and leave the soil.

[0032] The lifting plate 3 is also provided with a rotary drive assembly 6 for driving the sampling tube 5 to rotate. The rotary drive assembly 6 includes a first gear ring 61, a second motor 62, and a drive gear 63. The first gear ring 61 is keyed to the sampling tube 5. The second motor 62 is mounted on the lifting plate 3 through a bracket. The output end of the second motor 62 is keyed to the drive gear 63 that meshes with the first gear ring 61. The rotary drive assembly 6 facilitates the rotation of the sampling tube 5 and can cooperate with the lifting drive assembly 4 to allow the sampling tube 5 to enter the soil for soil sampling.

[0033] The sampling tube 5 is equipped with a grooved drill bit 7 at its lower end. The grooved drill bit 7 consists of an annular plate and two annular sleeves of different diameters. The diameter of the sampling tube 5 is between the diameters of the two annular sleeves. The two annular sleeves are welded to the inner and outer edges of the annular plate, respectively. A through hole is provided in the middle of the grooved drill bit 7 and is connected to the sampling tube 5. The lower end face of the annular sleeve is set with a serrated structure. The two annular sleeves of the grooved drill bit 7 form an annular cavity, which can separate the soil sample from the outer soil and prevent the upper soil layer from being pressed to the lower layer during the downward pressing of the grooved drill bit 7, thus avoiding soil sample contamination.

[0034] The annular groove drill bit 7 is equipped with a soil conveying assembly 8 for conveying soil. The soil conveying assembly 8 includes a storage hopper 81, a conveying pipe 82, and a mounting plate 83. The storage hopper 81 is sleeved on the sampling pipe 5 and located on its upper side. The conveying pipe 82 connects the annular groove drill bit 7 and the storage hopper 81. The sampling pipe 5 is connected to the mounting plate 83, and a spiral conveying rod 84 is rotatably connected to the mounting plate 83. The spiral conveying rod 84 is located inside the conveying pipe 82. A second toothed ring 86 is fixedly connected to the lifting plate 3. A driven gear 85 that meshes with the second toothed ring 86 is keyed to the spiral conveying rod 84. The soil conveying assembly 8 can convey soil into the annular cavity of the annular groove drill bit 7, which facilitates the annular groove drill bit 7 to enter the soil for sampling and facilitates backfilling of the soil after sampling.

[0035] The sampling tube 5 is also equipped with a soil sample cutting assembly 9 for cutting soil samples. The soil sample cutting assembly 9 includes a support groove block 91, a cutting plate 92, and a drive rod 93. The support groove block 91 is disposed on the outer wall of the sampling tube 5. The cutting plate 92 is slidably connected to the support groove block 91, and one end of the cutting plate 92 extends into the interior of the sampling tube 5. The drive rod 93 is slidably connected to the side wall of the sampling tube 5. The lower end of the drive rod 93 is connected to a drive block 94 for pushing the cutting plate 92 to slide. A cylinder 95 is installed on the sampling tube 5 for driving the drive rod 93 to slide. The soil sample cutting assembly 9 can cut and support the bottom of the soil sample, so that the soil sample can move upward synchronously with the sampling tube 5 for extraction.

[0036] The soil sampling equipment also includes a drill bit cleaning assembly 10 for cleaning the annular groove drill bit 7. The drill bit cleaning assembly 10 includes a connecting rod 101, a drive ring 102, and a cleaning frame 103. The connecting rod 101 is slidably connected to the annular groove drill bit 7. The upper end of the connecting rod 101 is connected to the drive ring 102, and the lower end of the connecting rod 101 is connected to the cleaning frame 103. A return spring 104 is connected between the drive ring 102 and the annular groove drill bit 7. Loose soil clods 14 for removing soil are connected to the cleaning frame 103. The drill bit cleaning assembly 10 can clean the inner wall of the annular groove drill bit 7 during the start of the soil sample cutting assembly 9, which facilitates the next sampling use of the sampling equipment.

[0037] The working process of this invention is as follows:

[0038] When soil samples need to be collected, the collection device is placed at the collection position, and the second motor 62 is started to drive the drive gear 63 to rotate. The drive gear 63 drives the sampling tube 5 to rotate through the first toothed ring 61, so that the annular groove drill bit 7 at the lower end of the sampling tube 5 rotates synchronously. The first motor 43 is started to drive the lead screw 42 to rotate, and the lead screw 42 drives the lifting plate 3 to slide downward, so that the lifting plate 3 drives the sampling tube 5 to move downward and enter the soil. The sawtooth structure on the annular groove drill bit 7 cuts the soil, and the loose soil block 14 set in the annular groove drill bit 7 turns up and disperses the soil, so that the soil sample in the middle of the annular groove drill bit 7 is separated from the soil on the outside of the annular groove drill bit 7, so that an annular groove is formed around the soil sample, avoiding the mixing of upper and lower soil layers and causing soil sample contamination. The soil sample in the middle of the annular groove drill bit 7 enters the sampling tube 5 and maintains a certain gap with the inner wall of the sampling tube 5 to avoid the soil sample being subjected to pressure generated by the inner wall of the sampling tube 5, thus ensuring the original state of the soil sample.

[0039] While the sampling tube 5 rotates, the driven gear 85 rotates around the second gear ring 86, causing the driven gear 85 to drive the spiral conveying rod 84 to rotate. The spiral conveying rod 84 transports the soil in the annular groove drill bit 7 to the storage hopper 81, facilitating the downward movement of the annular groove drill bit 7 and the sampling tube 5. When the sampling tube 5 reaches the required depth, the starting cylinder 95 drives the drive rod 93 to move downward. The drive rod 93 drives the drive block 94 to squeeze the cutting plate 92, causing the cutting plate 92 to enter the sampling tube 5. During the rotation of the sampling tube 5, the bottom of the soil sample is cut and supported. While the drive block 94 moves downward, it presses down on the drive ring 102, causing the connecting rod 101 to drive the cleaning frame 103 to move downward to scrape and clean the soil adhering to the inner wall of the annular groove drill bit 7, facilitating the next sampling use of the sampling equipment.

[0040] The first motor 43 is controlled to rotate in the reverse direction, causing the sampling tube 5 to move upward, which in turn causes the soil sample to move upward. The second motor 62 rotates in the reverse direction, causing the screw conveyor 84 to rotate in the reverse direction. The screw conveyor 84 backfills most of the soil in the storage hopper 81 into the sampling hole, preventing soil from falling around the sampling hole. This eliminates the need for manual cleaning of the sampling site, simplifies the subsequent steps of soil sample collection, and restores the soil sampling environment. After the sampling tube 5 is completely detached from the ground, the soil sample can be taken out by opening the side door set on the side wall of the sampling tube 5, thus realizing the soil sample collection operation.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A soil sample collection device, characterized in that, The device includes a frame (1), a limiting frame (2), and a lifting plate (3). The limiting frame (2) is installed on both sides of the frame (1). The lifting plate (3) is slidably connected to the limiting frame (2). The frame (1) is equipped with a lifting drive assembly (4) for driving the lifting plate (3) to slide up and down. A sampling tube (5) is rotatably connected to the lifting plate (3). The lifting plate (3) is also equipped with a rotation drive assembly (6) for driving the sampling tube (5) to rotate. A grooved drill bit (7) is installed at the lower end of the sampling tube (5). A soil conveying assembly (8) for conveying soil is provided on the grooved drill bit (7). A soil cutting assembly (9) for cutting soil samples is also provided on the sampling tube (5). The annular groove drill bit (7) consists of an annular plate and two annular sleeves of different diameters. The two annular sleeves are welded to the inner and outer edges of the annular plate, respectively. The annular groove drill bit (7) has a through hole in the middle and is connected to the sampling tube (5). The lower end face of the annular sleeve is set as a sawtooth structure. The soil conveying assembly (8) includes a storage hopper (81), a conveying pipe (82), and an installation plate (83). The storage hopper (81) is fitted onto the sampling pipe (5) and located on its upper side. The conveying pipe (82) is connected between the annular groove drill bit (7) and the storage hopper (81). The sampling pipe (5) is connected to the installation plate (83). The installation plate (83) is rotatably connected to the spiral conveying rod (84), and the spiral conveying rod (84) is located inside the conveying pipe (82). The lifting plate (3) is fixedly connected to a second toothed ring (86). The spiral conveying rod (84) is keyed to a driven gear (85) that meshes with the second toothed ring (86). The soil conveying assembly (8) is able to convey soil from the annular cavity of the groove drill bit (7) to the storage hopper (81).

2. The soil sample collection device according to claim 1, characterized in that: The lifting drive assembly (4) includes a guide column (41), a lead screw (42) and a first motor (43). The guide column (41) and the lead screw (42) are respectively connected to the limiting frame (2) on the left and right sides of the frame (1). One end of the lifting plate (3) is slidably connected to the guide column (41), and the other end of the lifting plate (3) is threadedly connected to the lead screw (42). The first motor (43) for driving the lead screw (42) to rotate is installed on the frame (1).

3. The soil sample collection device according to claim 1, characterized in that: The rotary drive assembly (6) includes a first gear ring (61), a second motor (62) and a drive gear (63). The first gear ring (61) is keyed to the sampling tube (5). The second motor (62) is mounted on the lifting plate (3) via a bracket. The output end of the second motor (62) is keyed to the drive gear (63) that meshes with the first gear ring (61).

4. The soil sample collection device according to claim 1, characterized in that: The soil sample cutting assembly (9) includes a support groove (91), a cutting plate (92), and a drive rod (93). The support groove (91) is disposed on the outer wall of the sampling tube (5). The cutting plate (92) is slidably connected to the support groove (91), and one end of the cutting plate (92) extends into the interior of the sampling tube (5). The side wall of the sampling tube (5) is slidably connected to the drive rod (93). The lower end of the drive rod (93) is connected to a drive block (94) for pushing the cutting plate (92) to slide. A cylinder (95) for driving the drive rod (93) to slide is installed on the sampling tube (5).

5. A soil sample collection device according to claim 1, characterized in that: It also includes a drill bit cleaning assembly (10) for cleaning the annular groove drill bit (7). The drill bit cleaning assembly (10) includes a connecting rod (101), a drive ring (102), and a cleaning frame (103). The connecting rod (101) is slidably connected to the annular groove drill bit (7). The upper end of the connecting rod (101) is connected to the drive ring (102), and the lower end of the connecting rod (101) is connected to the cleaning frame (103). A return spring (104) is connected between the drive ring (102) and the annular groove drill bit (7).

6. The soil sample collection device according to claim 1, characterized in that: The frame (1) includes a base plate (11), a support column (12) and a top plate (13). The top plate (13) is connected to the base plate (11) through the support column (12). The base plate (11) is provided with a through hole for the sampling tube (5) to pass through.

7. A soil sample collection device according to claim 5, characterized in that: The cleaning frame (103) is connected to loose soil blocks (14) for breaking up the soil.

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