Soil sample collecting device for cultivated land investigation

Abstract

The invention discloses a soil sample collection device for cultivated land investigation, and relates to the technical field of soil sample collection, the soil sample collection device comprises a frame, two pipe frames are welded to the outer wall of the frame, a concentric-square-shaped frame is fixed to the inner wall of each pipe frame, the pipe frames are used for supporting the concentric-square-shaped frame, and an upper plate is fixed to the top of the outer wall of each concentric-square-shaped frame; a lower plate is fixed to the bottom of the outer wall of the concentric-square-shaped frame, a machine shell is fixed to the inner wall of the lower plate, the top of the outer wall of the machine shell is fixedly connected with the inner wall of the upper plate, a mud squeezing cover is fixed to the bottom of the inner wall of the machine shell, a servo motor is fixedly installed at the top of the inner wall of the machine shell, and a circular groove rod is fixed to the bottom end of a rotating shaft of the servo motor. An inner screw tube is fixed to the inner wall of the machine shell, a threaded groove is formed in the inner wall of the inner screw tube, and the threaded groove of the inner screw tube is arranged to be of a non-self-locking type, the outer screw shell drives the spiral blade tube to rotate downwards, and therefore the problem that collection is not easy and convenient due to the fact that an operator needs tedious and strenuous operation is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of soil sample collection, and particularly to a soil sample collection device for cultivated land investigation. Background Technique

[0002] The soil sample collection device for cultivated land investigation is a key tool for soil general surveys, environmental monitoring, and agricultural management. It mainly drills soil samples in agricultural cultivated land. By inserting a core sampler into the soil, it uses its thin-walled structure to cut the soil and retain the original structure, improving the efficiency and quality of soil sampling.

[0003] The patent with the publication number CN218035726U discloses a soil sample collection device for cultivated land investigation, including a bracket. A cross plate is fixed inside the bracket. A storage battery and an electric push rod are respectively fixed on the top of the cross plate. The top end of the electric push rod slidably penetrates through the cross plate and is fixed with a surrounding frame. A motor is fixed inside the surrounding frame. By setting a support plate, a cross plate, a storage battery, an electric push rod, a surrounding frame, a motor, a screw conveyor, a cylinder, a control switch, and a reinforcement component, when collecting soil samples in cultivated land, after placing this device on the cultivated land to be collected, it can automatically collect soil without manual excavation. The support range of the bracket is increased through the reinforcement component, so that when the screw conveyor samples the soil layer, it can be more stable and the bracket will not shake. When the device is not in use, the reinforcement component can be folded, making it convenient to carry.

[0004] However, the current soil sample collection device for cultivated land investigation has the following problems: In the process of drilling underground samples of cultivated land soil, the surface of the cultivated land soil dries and solidifies into lumps, forming a hard surface. When using ordinary equipment, operators need to hold the equipment to ensure that the sampling drill bit points downward, making the operation of the operators cumbersome and laborious, and thus leading to the problem that the equipment is not easy to collect. Therefore, we propose a soil sample collection device for cultivated land investigation. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a soil sample collection device for cultivated land investigation, which solves the problems raised in the above background technique.

[0006] To achieve the above object, the present invention is realized through the following technical solutions: A soil sample collection device for cultivated land investigation, including a vehicle frame, two pipe racks are welded on the outer wall of the vehicle frame, a return frame is fixed on the inner wall of the pipe rack, the pipe rack is used to support the return frame, an upper plate is fixed on the top of the outer wall of the return frame, a lower plate is fixed on the bottom of the outer wall of the return frame, a machine shell is fixed on the inner wall of the lower plate, the top of the outer wall of the machine shell is fixedly connected with the inner wall of the upper plate, a mud extrusion cover is fixed on the bottom of the inner wall of the machine shell, a servo motor is fixedly installed on the top of the inner wall of the machine shell, the bottom end of the rotating shaft of the servo motor is fixed with a round groove rod, an internal screw pipe is fixed on the inner wall of the machine shell, a thread groove is opened on the inner wall of the internal screw pipe, the thread groove of the internal screw pipe is set as non-self-locking, a spiral leaf pipe is sleeved on the outer wall of the round groove rod, an external screw shell is fixed on the top of the outer wall of the spiral leaf pipe, the outer wall of the external screw shell meshes with the inner wall of the internal screw pipe, a U-shaped block is fixed on the top surface of the external screw shell, the outer wall of the U-shaped block is slidably connected with the inner wall of the round groove rod, the spiral leaf pipe can quickly drill to the lower part of the cultivated land through the rotation and extrusion of the external screw shell, the round groove rod drives the U-shaped block to rotate forward, the U-shaped block drives the external screw shell to rotate forward, under the restriction of the thread groove of the internal screw pipe, the external screw shell drives the spiral leaf pipe to rotate downward, the U-shaped block slides in the chute of the round groove rod, the sharp cone of the spiral leaf pipe drills the hard soil on the surface of the cultivated land, the spiral blade of the spiral leaf pipe spirals into the cultivated land, and the rotating shaft of the servo motor rotates reversely, and the spiral leaf pipe rotates upward to bring out the soil sample. According to the above technical solution, the machine shell is located between the two pipe racks, the mud extrusion cover is located above the vehicle frame, and the internal screw pipe is located below the servo motor.

[0007] According to the above technical solution, exhaust holes are provided at the bottom of the machine shell, two round holes are opened at the top of the outer wall of the machine shell, two power interfaces are provided on the top surface of the servo motor, and the power interfaces of the servo motor are aligned with the two round holes of the machine shell.

[0008] According to the above technical solution, a sharp cone is provided at the bottom end of the spiral leaf pipe, spiral blades are provided on the outer wall of the spiral leaf pipe, the spiral blades of the spiral leaf pipe are in sliding contact with the outer wall of the mud extrusion cover, and the mud extrusion cover is used to squeeze off the excess soil on the spiral leaf pipe.

[0009] According to the above technical solution, the vehicle frame includes a bottom frame, rollers and a bottom plate, the rollers are rotatably installed in the inner wall of the bottom frame, the bottom plate is fixed at the bottom of the inner wall of the bottom frame, and a round opening is opened on the bottom surface of the bottom plate.

[0010] According to the above technical solution, a mud scraping device is provided on the inner wall of the external screw shell, the mud scraping device is used to scrape foreign objects in the thread groove of the internal screw pipe, and a lubricating device is provided at one end of the mud scraping device, and the lubricating device is used to apply lubricating oil to the outer wall of the round groove rod.

[0011] According to the above technical solution, the sludge scraping device includes a short rod, the short rod penetrates and is fixed at the bottom end of the outer spiral shell, a tooth block is fixed at the bottom end of the short rod, the outer wall of the tooth block meshes with the inner wall of the inner spiral tube, the tooth block is used for scraping foreign objects, a plurality of circular rings are fixed on the outer wall of the tooth block, a sliding rod is fixed on the outer wall of the circular ring, the bottom surface of the outer spiral shell penetrates and is fixed with a long rod, the circular ring is used for supporting the tooth block, the short rod drives the tooth block to rotate downward, the tooth block rotates downward in the thread groove of the inner spiral tube, the long rod drives the circular ring to rotate downward, and the circular ring supports the tooth block to rotate downward.

[0012] According to the above technical solution, a ring plate is fixed at the bottom end of the long rod, the outer wall of the ring plate is fixedly connected to the bottom end of the tooth block, a plurality of springs are fixed on the bottom side of the ring plate, the ring plate is sleeved on the spiral blade tube, one end of the spring away from the ring plate is fixed with a wide ring, the wide ring is sleeved on the spiral blade tube, a plurality of sliding rods are fixed on the top side of the wide ring, the sliding rods penetrate and are slidably installed on the bottom side of the ring plate, the wide ring pushes the soil to move outwards, the wide ring contacts the soil sample in the inner spiral tube, under the action of the extrusion force, the wide ring drives the sliding rod to move upwards, the sliding rod slides upwards in the ring plate, and the spring on the wide ring starts to contract.

[0013] According to the above technical solution, the lubrication device includes a cylinder, the cylinder is fixed at the top end of the long rod, a concave arc block is embedded on the side of the cylinder away from the long rod, a ring shell is fixed on the top surface of the concave arc block, the ring shell is sleeved on the circular groove rod, a sponge block is fixed on the inner wall of the ring shell, the inner wall of the sponge block is in sliding contact with the outer wall of the circular groove rod, the cylinder drives the concave arc block to rotate downward, the concave arc block drives the ring shell to rotate downward, the ring shell drives the sponge block to rotate downward, and the sponge block applies lubricating oil on the surface of the circular groove rod.

[0014] According to the above technical solution, a long plate is fixed at the top end of the concave arc block, a short tube is fixed on the inner wall of the exhaust hole of the machine shell, a semi-circular arc block is fixed on the bottom surface of the long plate, the semi-circular arc block is located below the short tube, the long plate drives the semi-circular arc block to rotate downward, the semi-circular arc block leaves the short tube, the air port on the short tube is opened, under the action of the atmospheric pressure, the power for the outer spiral shell to rotate downward is increased, when the rotating shaft of the servo motor reverses, the semi-circular arc block contacts the surface of the short tube, and the long plate blocks the air port of the short tube, and the long plate is used for blocking the upper part of the short tube.

[0015] The present invention provides a soil sample collection device for cultivated land investigation. It has the following beneficial effects: (1) In the present invention, through the cooperation of a frame, a pipe rack, a return-shaped rack, an upper plate, a lower plate, a machine shell, a mud extrusion cover, a servo motor, a round groove rod, an internal screw tube, a spiral blade tube, and an external screw shell with a U-shaped block, the round groove rod drives the U-shaped block to rotate forward, the U-shaped block drives the external screw shell to rotate forward. Under the restriction of the thread groove of the internal screw tube, the external screw shell drives the spiral blade tube to rotate downward. The U-shaped block slides in the chute of the round groove rod. The pointed cone of the spiral blade tube drills the hard soil on the surface of the cultivated land, and the spiral blades of the spiral blade tube are screwed into the cultivated land, enabling the operator to break the hard soil on the surface without applying pressure, preventing the operator from having to perform cumbersome and laborious operations that make collection inconvenient. Moreover, when the rotating shaft of the servo motor rotates in reverse, the spiral blade tube rotates upward to take out the soil sample, and the mud extrusion cover shovels the excess soil on the rotating blades of the spiral blade tube, preventing a large amount of soil from being carried out by the spiral blade tube and causing soil blockage in the machine shell.

[0016] (2) In the present invention, through the setting of the mud scraping device, the short rod, the tooth block, and the ring cooperate with the long rod. The short rod drives the tooth block to rotate downward, the tooth block rotates downward in the thread groove seam of the internal screw tube, the long rod drives the ring to rotate downward, and the ring supports the tooth block to rotate downward, enabling the tooth block to scrape out foreign objects in the thread groove of the internal screw tube, preventing foreign objects in the thread groove of the internal screw tube from causing the spiral blade tube to drill into the cultivated land slowly.

[0017] (3) In the present invention, through the setting of the mud scraping device, the ring plate, the spring, and the wide ring cooperate with the sliding rod. The wide ring contacts the soil sample in the internal screw tube. Under the action of the extrusion force, the wide ring drives the sliding rod to move upward, the sliding rod slides upward in the ring plate, the spring on the wide ring starts to contract, and under the elastic force of the spring, the wide ring pushes out the soil sample in the machine shell, preventing the soil sample from accumulating in the machine shell and making it cumbersome to take out the soil sample from the equipment.

[0018] (4) In the present invention, through the setting of the lubrication device, the cylinder, the concave arc block, and the ring shell cooperate with the sponge block. The cylinder drives the concave arc block to rotate downward, the concave arc block drives the ring shell to rotate downward, the ring shell drives the sponge block to rotate downward, and the sponge block applies lubricating oil to the surface of the round groove rod, preventing the surface of the round groove rod from oxidizing and rusting, which may cause the equipment to run smoothly.

[0019] (5) In the present invention, through the setting of the lubrication device, the long plate and the short tube cooperate with the semi-circular block. The long plate drives the semi-circular block to rotate downward, the semi-circular block leaves the short tube, and the air port on the short tube is opened. Under the action of the atmospheric pressure, the power for the external screw shell to rotate downward is increased. When the rotating shaft of the servo motor rotates in reverse, the semi-circular block contacts the surface of the short tube, and the long plate blocks the air port of the short tube, reducing the entry of moisture into the internal screw tube, preventing moisture from entering the internal screw tube and causing the parts inside the internal screw tube to be damaged by moisture. Brief Description of the Drawings

[0020] Figure 1 is a schematic diagram of the whole of the present invention; Figure 2 is a schematic diagram of the internal components of the present invention; Figure 3 It is a schematic view of the left side of the whole invention; Figure 4 It is a schematic cross-sectional view of the machine shell of the present invention; Figure 5 It is a schematic view of the mud scraping device of the present invention; Figure 6 It is a schematic view of the lubrication device of the present invention; Figure 7 For the present invention Figure 6 A partial enlarged schematic view at position A in;

[0021] In the figure: 1, frame; 101, chassis; 102, rollers; 103, bottom plate; 2, pipe rack; 3, return-shaped rack; 4, upper plate; 5, lower plate; 6, machine shell; 7, mud extrusion cover; 8, servo motor; 9, round groove rod; 10, internal screw tube; 11, spiral blade tube; 12, external screw shell; 13, U-shaped block; 14, mud scraping device; 141, short rod; 142, tooth block; 143, ring; 144, long rod; 145, ring plate; 146, spring; 147, wide ring; 148, slide rod; 15, lubrication device; 151, cylinder; 152, concave arc block; 153, ring shell; 154, sponge block; 155, long plate; 156, short tube; 157, semi-arc block. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0023] Please refer to Figures 1 - 7 , an embodiment of the present invention is: A soil sample collection device for cultivated land investigation, including a frame 1, the frame 1 includes a chassis 101, rollers 102 and a bottom plate 103, the rollers 102 are rotatably installed in the inner wall of the chassis 101, the bottom plate 103 is fixed at the bottom of the inner wall of the chassis 101, a round opening is provided on the bottom surface of the bottom plate 103, and two pipe racks 2 are welded to the outer wall of the frame 1, and a return-shaped rack 3 is fixed on the inner wall of the pipe rack 2, and the pipe rack 2 is used to support the return-shaped rack 3; The top of the outer wall of the clip-shaped frame 3 is fixed with an upper plate 4, and the bottom of the outer wall of the clip-shaped frame 3 is fixed with a lower plate 5. The inner wall of the lower plate 5 is fixed with a machine shell 6. The top of the outer wall of the machine shell 6 is fixedly connected to the inner wall of the upper plate 4. The machine shell 6 is located between the two pipe racks 2. There is an exhaust hole at the bottom of the machine shell 6. There are two round holes opened at the top of the outer wall of the machine shell 6. The bottom of the inner wall of the machine shell 6 is fixed with a mud extrusion cover 7. The mud extrusion cover 7 is located above the vehicle frame 1. A servo motor 8 is fixedly installed at the top of the inner wall of the machine shell 6. There are two power interfaces on the top surface of the servo motor 8. The power interfaces of the servo motor 8 are aligned with the two round holes of the machine shell 6. The bottom end of the rotating shaft of the servo motor 8 is fixed with a round groove rod 9. An inner screw tube 10 is fixed to the inner wall of the machine shell 6. The inner screw tube 10 is located below the servo motor 8. A thread groove is provided on the inner wall of the inner screw tube 10. The thread groove of the inner screw tube 10 is set as non-self-locking. A spiral blade tube 11 is sleeved on the outer wall of the round groove rod 9. An outer screw shell 12 is fixed to the top of the outer wall of the spiral blade tube 11. The outer wall of the outer screw shell 12 meshes with the inner wall of the inner screw tube 10. A U-shaped block 13 is fixed to the top surface of the outer screw shell 12. The outer wall of the U-shaped block 13 is slidably connected to the inner wall of the round groove rod 9. The spiral blade tube 11 can quickly drill to the lower part of the cultivated land through the rotation and extrusion of the outer screw shell 12. A pointed cone is provided at the bottom end of the spiral blade tube 11. Spiral blades are provided on the outer wall of the spiral blade tube 11. The spiral blades of the spiral blade tube 11 are in sliding contact with the outer wall of the mud extrusion cover 7. The mud extrusion cover 7 is used to extrude the excess soil on the spiral blade tube 11; The operator pushes the chassis 101, and the roller 102 on the chassis 101 starts to roll on the ground. The chassis 101 drives the bottom plate 103. The operator pushes the frame 1 to the cultivated land. The chassis 101 supports the pipe rack 2, and the pipe rack 2 supports the circular frame 3. The circular frame 3 supports the upper plate 4 and the lower plate 5. The upper plate 4 and the lower plate 5 support the casing 6. The chassis 101 is rotated downward. The chassis 101 rotates downward on the rotating shaft of the roller 102. The chassis 101 drives the pipe rack 2 to rotate downward. The pipe rack 2 The circular frame 3 is driven to rotate downward, the circular frame 3 drives the lower plate 5 to rotate downward, the lower plate 5 drives the casing 6 to rotate downward, the casing 6 drives the mud squeezing cover 7 to rotate downward, the operator holds the other hand on the circular frame 3 to adjust the downward position of the casing 6, the operator starts the servo motor 8 in the casing 6, the shaft of the servo motor 8 starts to rotate forward, the shaft of the servo motor 8 drives the circular groove rod 9 to rotate forward, the circular groove rod 9 drives the U-shaped block 13 to rotate forward, and the U-shaped block 13 drives the outer screw shell 12 to rotate forward Under the restriction of the thread groove of the inner spiral tube 10, the outer spiral shell 12 drives the spiral blade tube 11 to rotate downward. At the same time, the U-shaped block 13 slides in the slide groove of the circular groove rod 9. During the downward rotation of the pointed cone of the spiral blade tube 11, the pointed cone of the spiral blade tube 11 drills the hard soil on the surface of the cultivated land, and the spiral blades of the spiral blade tube 11 are screwed into the cultivated land, so that the operator does not need to apply pressure to break the hard surface soil, thereby avoiding the problem that the operator needs to perform cumbersome and laborious operations when the soil sample collection device collects cultivated land soil, resulting in inconvenient collection. When the spiral blades of the spiral blade tube 11 are screwed into the deep layer of the cultivated land, the operator starts the servo motor 8 again, and the rotating shaft of the servo motor 8 begins to reverse. At this time, the spiral blade tube 11 rotates upward to bring out the soil sample, and the mud squeezing cover 7 shovels off the excess soil on the rotating blades of the spiral blade tube 11, thereby avoiding the spiral blade tube 11 bringing out a large amount of soil when the soil sample collection device collects cultivated land soil, causing the soil to be blocked in the casing 6.

[0024] The inner wall of the outer spiral shell 12 is provided with a scraper 14 for scraping off foreign matter in the thread groove of the inner spiral tube 10 . One end of the scraper 14 is provided with a lubricating device 15 for applying lubricating oil to the outer wall of the circular groove rod 9 .

[0025] Working principle: The operator pushes the vehicle frame 1 to the cultivated land and rotates the underframe 101 downward. The underframe 101 rotates downward on the rotating shaft of the roller 102. The underframe 101 drives the pipe rack 2 to rotate downward. The pipe rack 2 drives the loop-shaped rack 3 to rotate downward. The loop-shaped rack 3 drives the lower plate 5 to rotate downward. The lower plate 5 drives the machine shell 6 to rotate downward. The machine shell 6 drives the mud extrusion cover 7 to rotate downward. Hold the loop-shaped rack 3 by hand to adjust the downward orientation of the machine shell 6. The rotating shaft of the servo motor 8 drives the round groove rod 9 to rotate forward. The round groove rod 9 drives the U-shaped block 13 to rotate forward. The U-shaped block 13 drives the outer screw shell 12 to rotate forward. Under the restriction of the thread groove of the inner screw tube 10, the outer screw shell 12 drives the spiral blade tube 11 to rotate downward. The U-shaped block 13 slides in the chute of the round groove rod 9. The pointed cone of the spiral blade tube 11 drills the hard soil on the surface of the cultivated land. The spiral blades of the spiral blade tube 11 are screwed into the cultivated land. When the spiral blades of the spiral blade tube 11 are screwed into the deep layer of the cultivated land, the rotating shaft of the servo motor 8 starts to rotate in reverse. At this time, the spiral blade tube 11 rotates upward to bring out the soil sample.

[0026] Please refer to Figures 1 - 7 , on the basis of the above embodiment, in another embodiment of the present invention, the mud scraping device 14 includes a short rod 141. The short rod 141 penetrates and is fixed at the bottom end of the outer screw shell 12. A tooth block 142 is fixed at the bottom end of the short rod 141. The outer wall of the tooth block 142 meshes with the inner wall of the inner screw tube 10. A plurality of rings 143 are fixed on the outer wall of the tooth block 142. A sliding rod 148 is fixed on the outer wall of the ring 143. The bottom surface of the outer screw shell 12 penetrates and is fixed with a long rod 144. While the outer screw shell 12 drives the spiral blade tube 11 to rotate downward, the outer screw shell 12 drives the short rod 141 to rotate downward. The outer screw shell 12 drives the long rod 144 to rotate downward. The short rod 141 drives the tooth block 142 to rotate downward. The tooth block 142 is used to scrape foreign objects. The tooth block 142 rotates downward in the thread groove of the inner screw tube 10. At the same time, the ring 143 is used to support the tooth block 142. The long rod 144 drives the ring 143 to rotate downward. The ring 143 supports the tooth block 142 to rotate downward, so that the tooth block 142 scrapes out the foreign objects in the thread groove of the inner screw tube 10, thus avoiding the problem that when the soil sample collection device collects the cultivated land soil, there are foreign objects in the thread groove of the inner screw tube 10, resulting in slow drilling of the spiral blade tube 11 into the cultivated land.

[0027] A ring plate 145 is fixed to the bottom end of the long rod 144. The outer wall of the ring plate 145 is fixedly connected to the bottom end of the tooth block 142. A plurality of springs 146 are fixed to the bottom side of the ring plate 145. The ring plate 145 is sleeved on the spiral blade tube 11. One end of the spring 146 away from the ring plate 145 is fixed with a wide ring 147. The wide ring 147 is sleeved on the spiral blade tube 11. A plurality of sliding rods 148 are fixed to the top side of the wide ring 147. The sliding rods 148 penetrate and are slidably installed on the bottom side of the ring plate 145. The wide ring 147 pushes the soil to move outwards. When it is necessary to take out the soil sample for detection, while the outer spiral shell 12 drives the long rod 144 to rotate downwards, the long rod 144 drives the ring plate 145 to rotate downwards, the ring plate 145 drives the spring 146 to rotate downwards, and the spring 146 drives the wide ring 147 to rotate downwards. During the downward rotation of the wide ring 147, the wide ring 147 contacts the soil sample in the inner spiral tube 10. Under the action of the extrusion force, the wide ring 147 drives the sliding rod 148 to move upwards, and the sliding rod 148 slides upwards in the ring plate 145. The spring 146 on the wide ring 147 starts to contract. Under the elastic force of the spring 146, the wide ring 147 pushes out the soil sample in the machine shell 6, thus avoiding the problem that when the soil sample collection device takes samples for detection, the soil sample accumulates in the machine shell 6, making it cumbersome to take out the soil sample by the device.

[0028] The lubricating device 15 includes a cylinder 151. The cylinder 151 is fixed to the top end of the long rod 144. A concave arc block 152 is embedded on the side of the cylinder 151 away from the long rod 144. A ring shell 153 is fixed to the top surface of the concave arc block 152. The ring shell 153 is sleeved on the circular groove rod 9. A sponge block 154 is fixed to the inner wall of the ring shell 153. The inner wall of the sponge block 154 is in sliding contact with the outer wall of the circular groove rod 9. While the outer spiral shell 12 drives the long rod 144 to rotate downwards, the long rod 144 drives the cylinder 151 to rotate downwards, the cylinder 151 drives the concave arc block 152 to rotate downwards, the concave arc block 152 drives the ring shell 153 to rotate downwards, and the ring shell 153 drives the sponge block 154 to rotate downwards. During the downward rotation of the sponge block 154, the sponge block 154 applies lubricating oil to the surface of the circular groove rod 9, thus avoiding the problem that when the soil sample collection device collects cultivated land soil, the surface of the circular groove rod 9 oxidizes and rusts, causing the equipment to run stuck.

[0029] A long plate 155 is fixed to the top end of the concave arc block 152. A short pipe 156 is fixed to the inner wall of the exhaust hole of the machine housing 6. A semi-circular arc block 157 is fixed to the bottom surface of the long plate 155. The semi-circular arc block 157 is located below the short pipe 156. The long plate 155 is used to block the upper part of the short pipe 156. While the cylinder 151 drives the concave arc block 152 to rotate downward, the concave arc block 152 drives the long plate 155 to rotate downward, the long plate 155 drives the semi-circular arc block 157 to rotate downward, the semi-circular arc block 157 leaves the short pipe 156, and the air port on the short pipe 156 is opened. Under the action of the atmospheric pressure, the downward rotation power of the outer spiral shell 12 is increased. When the rotating shaft of the servo motor 8 starts to reverse, the semi-circular arc block 157 contacts the surface of the short pipe 156, and the long plate 155 blocks the air port of the short pipe 156, reducing the moisture entering the inner spiral pipe 10, thereby avoiding the moisture entering the inner spiral pipe 10 and causing the parts in the inner spiral pipe 10 to be damaged by moisture when the soil sample collection device is not in use.

[0030] Working principle: The outer spiral shell 12 drives the short rod 141 to rotate downward, the outer spiral shell 12 drives the long rod 144 to rotate downward, the short rod 141 drives the tooth block 142 to rotate downward, the tooth block 142 rotates downward in the thread groove of the inner spiral pipe 10, the long rod 144 drives the circular ring 143 to rotate downward, and the circular ring 143 supports the tooth block 142 to rotate downward.

[0031] When it is necessary to take out the soil sample for detection, the long rod 144 drives the ring plate 145 to rotate downward, the ring plate 145 drives the spring 146 to rotate downward, the spring 146 drives the wide ring 147 to rotate downward, the wide ring 147 contacts the soil sample in the inner spiral pipe 10, and under the action of the extrusion force, the wide ring 147 drives the sliding rod 148 to move upward, the sliding rod 148 slides upward in the ring plate 145, and the spring 146 on the wide ring 147 starts to contract.

[0032] The long rod 144 drives the cylinder 151 to rotate downward, the cylinder 151 drives the concave arc block 152 to rotate downward, the concave arc block 152 drives the ring shell 153 to rotate downward, the ring shell 153 drives the sponge block 154 to rotate downward, and the sponge block 154 applies lubricating oil on the surface of the circular groove rod 9.

[0033] The concave arc block 152 drives the long plate 155 to rotate downward, the long plate 155 drives the semi-circular arc block 157 to rotate downward, the semi-circular arc block 157 leaves the short pipe 156, the air port on the short pipe 156 is opened, when the rotating shaft of the servo motor 8 reverses, the semi-circular arc block 157 contacts the surface of the short pipe 156, and the long plate 155 blocks the air port of the short pipe 156.

[0034] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An earth sample collection device for cultivated land investigation, comprising a vehicle frame (1), and two pipe racks (2) are welded to the outer wall of the vehicle frame (1), characterized in that: The inner wall of the pipe support (2) is fixed with a return-shaped frame (3), and the pipe support (2) is used to support the return-shaped frame (3). The top of the outer wall of the return-shaped frame (3) is fixed with an upper plate (4), the bottom of the outer wall of the return-shaped frame (3) is fixed with a lower plate (5), the inner wall of the lower plate (5) is fixed with a machine shell (6), the top of the outer wall of the machine shell (6) is fixedly connected with the inner wall of the upper plate (4), the bottom of the inner wall of the machine shell (6) is fixed with a mud extrusion cover (7), a servo motor (8) is fixedly installed at the top of the inner wall of the machine shell (6), the bottom end of the rotating shaft of the servo motor (8) is fixed with a round groove rod (9), an internal screw tube (10) is fixed on the inner wall of the machine shell (6), a thread groove is formed in the inner wall of the internal screw tube (10), the thread groove of the internal screw tube (10) is set as a non-self-locking type, a spiral blade tube (11) is sleeved on the outer wall of the round groove rod (9), an external screw shell (12) is fixed at the top of the outer wall of the spiral blade tube (11), the outer wall of the external screw shell (12) meshes with the inner wall of the internal screw tube (10), a U-shaped block (13) is fixed on the top surface of the external screw shell (12), the outer wall of the U-shaped block (13) is slidably connected with the inner wall of the round groove rod (9), and the spiral blade tube (11) can quickly drill to the lower part of the cultivated land through the rotation and extrusion of the external screw shell (12).

2. The earth sample collection device for cultivated land investigation according to claim 1, characterized in that: The machine shell (6) is located between two pipe supports (2), the mud extrusion cover (7) is located above the vehicle frame (1), and the internal screw tube (10) is located below the servo motor (8).

3. The earth sample collection device for cultivated land investigation according to claim 2, characterized in that: The bottom of the machine shell (6) is provided with exhaust holes, two round holes are opened at the top of the outer wall of the machine shell (6), two power supply interfaces are arranged on the top surface of the servo motor (8), and the power supply interfaces of the servo motor (8) are aligned with the two round holes of the machine shell (6).

4. The earth sample collection device for cultivated land investigation according to claim 3, characterized in that: The bottom end of the spiral blade tube (11) is provided with a sharp cone, spiral blades are arranged on the outer wall of the spiral blade tube (11), and the spiral blades of the spiral blade tube (11) are in sliding contact with the outer wall of the mud extrusion cover (7), and the mud extrusion cover (7) is used to extrude the excess soil on the spiral blade tube (11).

5. The earth sample collection device for cultivated land investigation according to claim 4, characterized in that: The vehicle frame (1) includes a bottom frame (101), rollers (102) and a bottom plate (103), the rollers (102) are rotatably installed in the inner wall of the bottom frame (101), the bottom plate (103) is fixed at the bottom of the inner wall of the bottom frame (101), and a round opening is formed in the bottom surface of the bottom plate (103).

6. The earth sample collection device for cultivated land investigation according to claim 5, characterized in that: A mud scraping device (14) is arranged on the inner wall of the external screw shell (12), and the mud scraping device (14) is used to scrape the foreign matters in the thread groove of the internal screw tube (10). One end of the mud scraping device (14) is provided with a lubricating device (15), and the lubricating device (15) is used to apply lubricating oil to the outer wall of the round groove rod (9).

7. The earth sample collection device for cultivated land investigation according to claim 6, characterized in that: The sludge scraping device (14) includes a short rod (141) which penetrates and is fixed to the bottom end of the outer screw shell (12). A tooth block (142) is fixed to the bottom end of the short rod (141). The outer wall of the tooth block (142) meshes with the inner wall of the inner screw tube (10). The tooth block (142) is used for scraping foreign matters. A plurality of rings (143) are fixed to the outer wall of the tooth block (142). Slide rods (148) are fixed to the outer walls of the rings (143). A long rod (144) penetrates and is fixed to the bottom surface of the outer screw shell (12). The rings (143) are used for supporting the tooth block (142).

8. The earth sample collection device for cultivated land investigation according to claim 7, characterized in that: A ring plate (145) is fixed to the bottom end of the long rod (144). The outer wall of the ring plate (145) is fixedly connected to the bottom end of the tooth block (142). A plurality of springs (146) are fixed to the bottom side of the ring plate (145). The ring plate (145) is sleeved on the spiral blade tube (11). One end of the spring (146) away from the ring plate (145) is fixed to a wide ring (147). The wide ring (147) is sleeved on the spiral blade tube (11). A plurality of slide rods (148) are fixed to the top side of the wide ring (147). The slide rods (148) penetrate and are slidably installed on the bottom side of the ring plate (145). The wide ring (147) pushes the soil to move outwards.

9. The earth sample collection device for cultivated land investigation according to claim 8, characterized in that: The lubricating device (15) includes a cylinder (151) which is fixed to the top end of the long rod (144). A concave arc block (152) is embedded on the side of the cylinder (151) away from the long rod (144). A ring shell (153) is fixed to the top surface of the concave arc block (152). The ring shell (153) is sleeved on the circular groove rod (9). A sponge block (154) is fixed to the inner wall of the ring shell (153). The inner wall of the sponge block (154) is in sliding contact with the outer wall of the circular groove rod (9). The sponge block (154) applies lubricating oil to the surface of the circular groove rod (9).

10. The earth sample collection device for cultivated land investigation according to claim 9, characterized in that: A long plate (155) is fixed to the top end of the concave arc block (152). A short tube (156) is fixed to the inner wall of the exhaust hole of the machine shell (6). A semi-arc block (157) is fixed to the bottom surface of the long plate (155). The semi-arc block (157) is located below the short tube (156). The long plate (155) is used for blocking the upper part of the short tube (156).

Images