An uncompressed soil sampling device for soil investigation

Abstract

The present invention provides a non-compressed soil collection device for soil investigation, which relates to the technical field of soil sampling. The soil collection device includes a collection frame, a collection cylinder body, an upper fixing plate, a chassis component, a collection movable frame and a collection driving part; the collection cylinder body is formed by buckling two semi-circular sampling plates together, and further includes an opening and closing switching mechanism and at least one pressing part. The side part of the opening and closing switching mechanism is connected to both outer extension rods. When the bottom of the collection cylinder body is on the upper side of the chassis component, the end of the pressing part away from the collection frame contacts the top of the opening and closing switching mechanism and acts on the opening and closing switching mechanism. When acted upon by the pressing part, the opening and closing switching mechanism can drive the two semi-circular sampling plates to rotate around the connection between the outer extension rod and the rotating seat. The structure of the present invention is simple, the collected soil sample can be automatically ejected from the inside of the collection cylinder body, and the integrity of the sample is maintained, which is easy for subsequent sample detection, and the operation is convenient and the practicability is strong.

Description

Technical Field

[0001] The present invention relates to the technical field of soil sampling, and particularly relates to a non-compressed soil collection device for soil investigation. Background Art

[0002] Soil collection devices are the general term for various tools and equipment used to collect soil samples, and are mainly used in fields such as environmental monitoring, agricultural research, and geological exploration. These devices can help researchers and technicians effectively obtain soil samples for subsequent analysis and research.

[0003] Existing soil collection devices have two methods. One is to drill the soil with a soil drill, but this sampling method easily causes the soil to break and cannot guarantee its integrity. The other is to press the sampling cylinder into the soil, pull out the sampling cylinder, and the soil sample inside the sampling cylinder can ensure the integrity of the sample. However, the sample is taken out by pushing the sample from the inside of the sampling cylinder so that it comes out of the port of the sampling cylinder. Therefore, taking out the sample is more troublesome and the soil sample is subjected to an axial thrust, resulting in a change in the density of the soil sample and affecting subsequent analysis and research. Summary of the Invention

[0004] The purpose of the present invention is to provide a non-compressed soil collection device for soil investigation to solve the technical problems existing in the background art.

[0005] To solve the above technical problems, the present invention provides a non-compressed soil collection device for soil investigation, which includes a collection frame, a collection cylinder, an upper fixing plate, a chassis component, a collection movable frame and a collection driving part. The chassis component is fixed at the bottom of the collection frame, and the upper fixing plate is arranged at the top of the collection cylinder. A rotating shaft is arranged on the top surface of the upper fixing plate, and the rotating shaft is connected to the collection movable frame. A guiding vertical rod part is arranged on the collection frame, and the collection movable frame is slidably matched with the guiding vertical rod part. The collection driving part is arranged on the collection frame, and both the collection movable frame and the rotating shaft are connected to the collection driving part. The collection driving part can drive the collection movable frame to move along the guiding vertical rod part, and the collection driving part can drive the rotating shaft in the moving state to rotate; The collection cylinder is composed of two semi-circular sampling plates buckled together. An outer extension rod is arranged on the side wall of the top of each semi-circular sampling plate, and sampling teeth are arranged at the bottom edge of the semi-circular sampling plate. The outer extension rod is rotatably connected to a rotating seat arranged on the outer wall of the upper fixing plate. It also includes an opening and closing switching mechanism and at least one pressing part. The opening and closing switching mechanism is arranged on the top of the upper fixing plate, and the side part of the opening and closing switching mechanism is connected to both outer extension rods. The pressing part is arranged on the top of the collection frame, and the end of the pressing part far from the collection frame extends to the upper side of the opening and closing switching mechanism. When the bottom of the collection cylinder is on the upper side of the chassis component, the end of the pressing part far from the collection frame contacts the top of the opening and closing switching mechanism and acts on the opening and closing switching mechanism. When acted on by the pressing part, the opening and closing switching mechanism can drive the two semi-circular sampling plates to rotate around the connection between the outer extension rod and the rotating seat.

[0006] On the basis of the above technical solution, the present invention also provides the following optional technical solutions:

[0007] In an optional solution: A plurality of upper guiding columns are arranged circumferentially along the edge of the top of the upper fixing plate. The opening and closing switching mechanism includes a vertical moving part, a rotating part and two side extension connecting parts. The vertical moving part is arranged above the upper fixing plate, and the vertical moving part is vertically slidably matched with a plurality of upper guiding columns. The rotating part is rotatably arranged on the top of the upper fixing plate, and the rotating part is connected to the vertical moving part. The end of the pressing part far from the collection frame can act on the rotating part and make the rotating part rotate. The rotating part in the rotating state can act on the vertical moving part and make it vertically move along the upper guiding column. The two side extension connecting parts are respectively arranged on the outer wall of the vertical moving part, and the side extension connecting part is connected to the outer extension rod on the same side.

[0008] In an alternative embodiment: The vertical movable part includes a movable ring and a plurality of convex ring parts. The plurality of convex ring parts are correspondingly sleeved on the upper guide posts, and the inner wall of the movable ring is fixedly connected to the plurality of convex ring parts. A pull-down spring is connected between the convex ring part and the top of the upper fixed disk. Two side extension connecting parts are respectively arranged on the outer wall of the movable ring. The rotating part includes a rotating ring, at least one load-bearing convex part, and a plurality of push-pull connecting rods. The rotating ring is rotatably arranged on the top of the upper fixed disk, and the height of the upper surface of the vertical movable part is lower than the height of the lower surface of the movable ring. The load-bearing convex part is arranged on the rotating ring, and the upper surface of the load-bearing convex part is an inclined surface. One end of the push-pull connecting rod is movably connected to the side part of the rotating ring, and the other end is movably connected to the inner wall of the movable ring.

[0009] In an alternative embodiment: The outer extension rod includes a vertical part and an inclined part. One end of the vertical part is rotatably connected to the rotating seat and fixedly connected to the outer wall of the semi-circular sampling plate. The inclined part is arranged at the top of the vertical part and is bent away from the semi-circular sampling plate; The side extension connecting part includes an outer extension frame and two limiting rollers. The outer extension frame is fixed on the side wall of the movable ring, and the two limiting rollers are rotatably arranged on the outer extension frame. A avoiding gap is formed between the two limiting rollers, and both the vertical part and the inclined part can pass through the avoiding gap.

[0010] In an alternative embodiment: Reserved grooves are formed on the adjacent side edges of the two semi-circular sampling plates. When the two semi-circular sampling plates are buckled together, the corresponding two reserved grooves form a slot. The opening and closing switching mechanism further includes two limiting plug rod parts. The top of the limiting plug rod part is fixed on the movable ring, and the limiting plug rod part slidably penetrates through the upper fixed disk. The limiting plug rod part can be inserted into the slot.

[0011] In an alternative embodiment: A transmission shaft that rotates therewith is arranged on the collection movable frame, and one end of the transmission shaft is connected to the rotating shaft through a bevel gear pair. A gear part is arranged at the other end of the transmission shaft. A guide sleeve and a spiral sleeve are also arranged on the collection movable frame. The guide sleeve is sleeved on it. The collection driving part includes a sampling lead screw part, a sampling motor, and a vertical rack. The sampling lead screw part is rotatably arranged on the side of the collection frame, and the spiral sleeve is spirally sleeved on the sampling lead screw part. The sampling motor is arranged on the top of the collection frame, and the output end of the sampling motor is connected to the end of the sampling lead screw part. The vertical rack is arranged on the side of the collection frame, and the vertical rack meshes with the gear part.

[0012] In an alternative embodiment: The pressing part includes a pressing rod and a pressing seat. One end of the pressing rod is fixedly connected to the collection frame and the other end extends to the upper side of the opening and closing switching mechanism. The pressing seat is arranged at the end of the pressing rod away from the collection frame, and a pressing roller that is rotationally matched therewith is arranged on the pressing seat.

[0013] In an alternative solution: the chassis component is hollow, and an avoidance opening is provided on the chassis component directly below the collection cylinder body for the collection cylinder body to pass through. A bearing plate assembly is also provided on the chassis component, and the bearing plate assembly includes a movable supporting plate provided inside the chassis component and an electric control adjustment cylinder provided on the side of the collection frame. A guiding opening is provided on the upper surface of the chassis component, and a protruding portion passing through the guiding opening is provided on the movable supporting plate. The end of the electric control adjustment cylinder away from the collection frame is connected to the protruding portion, and a pressure sensing sheet electrically connected to the electric control adjustment cylinder is provided at the end of the pressing portion away from the collection frame.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] 1. When the two semi-circular sampling plates in the present invention are in the closed state, they can be inserted into the soil for sample collection by rotation and downward movement. The collection is convenient, and the collected soil samples can maintain integrity.

[0016] 2. When the two semi-circular sampling plates in the present invention are in the unfolded state, the collected samples can be automatically separated without being pushed out from the inside, avoiding axial compression of the soil samples and affecting the subsequent detection of the soil samples.

[0017] 3. The structure of the present invention is simple. The collected soil samples can be automatically taken out of the inside of the collection cylinder body and maintain the integrity of the samples, which is easy for subsequent sample detection, convenient to operate and has strong practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a schematic structural diagram of one perspective of the soil collection device in an embodiment of the present invention.

[0020] Figure 2 It is a schematic structural diagram of another perspective of the soil collection device in an embodiment of the present invention.

[0021] Figure 3 It is a schematic connection structure diagram of the collection movable frame and the opening / closing switching mechanism in an embodiment of the present invention.

[0022] Figure 4 It is a schematic structural diagram of the opening / closing switching mechanism and the collection cylinder body in an embodiment of the present invention.

[0023] Figure 5Schematic diagram of the semi-circular sampling plate structure in an embodiment of the present invention.

[0024] Figure 6 Schematic diagram of the opening and closing switching mechanism structure in an embodiment of the present invention.

[0025] Figure 7 Schematic diagram of the pressing part structure in an embodiment of the present invention.

[0026] Reference numerals:

[0027] Collection frame 100, guiding vertical rod part 110, collection cylinder 200, semi-circular sampling plate 210, sampling teeth 220, outer extension rod 230, vertical part 231, inclined part 232, reserved groove 240, upper fixing plate 300, rotating shaft 310, upper guiding column 320, rotating seat 330, chassis component 400, avoiding through hole 410, guiding through hole 420, bearing plate assembly 430, collection movable frame 500, transmission shaft 510, bevel gear pair 520, guiding sleeve 530, gear part 540, spiral sleeve 550, collection driving part 600, sampling screw rod part 610, sampling motor 620, vertical rack 630, opening and closing switching mechanism 700, vertical moving part 710, moving ring 711, convex ring part 712, pulling spring 713, rotating part 720, rotating ring 721, bearing convex part 722, pushing and pulling connecting rod 723, side extension connecting part 730, outer extension frame 731, limiting roller 732, avoiding gap 733, limiting inserting rod part 740, pressing part 800, pressing rod 810, pressing seat 820, pressing roller 830. Detailed implementation manners

[0028] Next, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] The following further explains and illustrates the present invention in combination with specific embodiments.

[0032] In one embodiment, as Figures 1-4 shown, a non-compressed soil collection device for soil investigation includes a collection frame 100, a collection cylinder 200, an upper fixing plate 300, a chassis component 400, a collection movable frame 500, and a collection driving part 600. The chassis component 400 is fixed at the bottom of the collection frame 100, and the upper fixing plate 300 is arranged at the top of the collection cylinder 200. A rotating shaft 310 is arranged on the top surface of the upper fixing plate 300, and the rotating shaft 310 is connected to the collection movable frame 500. A guiding vertical rod part 110 is arranged on the collection frame 100, and the collection movable frame 500 is slidably matched with the guiding vertical rod part 110. The collection driving part 600 is arranged on the collection frame 100, and both the collection movable frame 500 and the rotating shaft 310 are connected to the collection driving part 600. The collection driving part 600 can drive the collection movable frame 500 to move along the guiding vertical rod part 110, and the collection driving part 600 can drive the rotating shaft 310 in a moving state to rotate. The collection cylinder 200 is composed of two semi-circular sampling plates 210 buckled together. An outer extension rod 230 is arranged on the side wall of the top of each semi-circular sampling plate 210, and a sampling tooth 220 is arranged at the bottom edge of the semi-circular sampling plate 210. The outer extension rod 230 is rotatably connected to a rotating seat 330 arranged on the outer wall of the upper fixing plate 300. It further includes an opening and closing switching mechanism 700 and at least one pressing part 800. The opening and closing switching mechanism 700 is arranged on the top of the upper fixing plate 300, and the side part of the opening and closing switching mechanism 700 is connected to both outer extension rods 230. The pressing part 800 is arranged on the top of the collection frame 100, and the end of the pressing part 800 away from the collection frame 100 extends to the upper side of the opening and closing switching mechanism 700. When the bottom of the collection cylinder 200 is on the upper side of the chassis component 400, the end of the pressing part 800 away from the collection frame 100 contacts the top of the opening and closing switching mechanism 700 and acts on the opening and closing switching mechanism 700. When acted on by the pressing part 800, the opening and closing switching mechanism 700 can drive the two semi-circular sampling plates 210 to rotate around the connection part of the outer extension rod 230 and the rotating seat 330.

[0033] In an embodiment of the present invention, in the initial state, two semi-circular sampling plates 210 are in a buckled state and form a cylindrical collection cylinder 200. At this time, the end of the pressing part 800 far away from the collection frame 100 just contacts the opening and closing switching mechanism 700. When collecting soil, the collection driving part 600 starts to work and drives the collection movable frame 500 to move downward along the guiding vertical rod part 110, and the collection movable frame 500 drives the collection cylinder 200 and the upper fixing plate 300 to move downward. The opening and closing switching mechanism 700 moves away from the pressing part 800 and is in a disengaged state. The rotating shaft 310 moving downward rotates itself under the drive of the collection driving part 600 and drives the collection cylinder 200 to rotate. The rotating shaft 310 drives the collection cylinder 200 to rotate, and the sampling teeth 220 at the bottom of the semi-circular sampling plate 210 act on the soil on the ground. Then, the collection cylinder 200 gradually inserts into the soil and the soil sample is stored inside the collection cylinder 200. Then, the collection driving part 600 drives the collection movable frame 500 to move upward along the guiding vertical rod part 110, and the soil inside the collection cylinder 200 moves upward with the collection cylinder 200. When the collection cylinder 200 moves to the upper side of the chassis component 400, the opening and closing switching mechanism 700 contacts the end of the pressing part 800 far away from the collection frame 100. The opening and closing switching mechanism 700 continues to move upward with the collection cylinder 200, and the pressing part 800 starts to act on the opening and closing switching mechanism 700. Under the action of the pressing part 800, the opening and closing switching mechanism 700 drives two outer extension rods 230 and makes the two semi-circular sampling plates 210 rotate around the connection between the outer extension rods 230 and the rotating seat 330. Then, the two semi-circular sampling plates 210 unfold, so that the columnar soil sample between the two semi-circular sampling plates automatically disengages from the inside of the collection cylinder 200, which is convenient for taking out the collected soil sample, and the soil sample is not compressed radially and circumferentially.

[0034] In one embodiment, as Figures 1-6As shown, a plurality of upper guide columns 320 are circumferentially arranged along the edge of the top of the upper fixed disk 300. The opening and closing switching mechanism 700 includes a vertical moving part 710, a rotating part 720 and two side extending connecting parts 730. The vertical moving part 710 is arranged on the upper side of the upper fixed disk 300, and the vertical moving part 710 is vertically slidably matched with the plurality of upper guide columns 320. The rotating part 720 is rotatably arranged on the top of the upper fixed disk 300, and the rotating part 720 is connected with the vertical moving part 710. The end of the pressing part 800 away from the collecting frame 100 can act on the rotating part 720 and cause the rotating part 720 to rotate. The rotating part 720 in the rotating state can act on the vertical moving part 710 and make it vertically move along the upper guide column 320. The two side extending connecting parts 730 are respectively arranged on the outer wall of the vertical moving part 710, and the side extending connecting part 730 is connected with the outer extending rod 230 on the same side; In the embodiment of the present invention, when the opening and closing switching mechanism 700 moves upward and contacts the end of the pressing part 800 away from the collecting frame 100, the pressing part 800 acts on the rotating part 720 and causes the rotating part 720 to rotate. The rotating 750 drives the vertical moving part 710 to move upward. The rotating part 720 moving upward drives the side extending connecting part 730 to move upward. The side extending connecting part 730 makes the semi-circular sampling plate 210 rotate outward around the connection between the outer extending rod 230 and the rotating seat 330 through the outer extending rod 230, so that the two semi-circular sampling plates 210 move away from each other and unfold, facilitating the extraction of the soil sample inside the collecting cylinder 200; When the opening and closing switching mechanism 700 moves away from the pressing part 800, the rotating part 720 automatically rotates back and the vertical moving part 710 moves downward. The vertical moving part 710 acts on the outer extending rod 230 and drives the semi-circular sampling plate 210 to rotate back through the outer extending rod 230, so that the two semi-circular sampling plates 210 are closed into a cylindrical collecting cylinder 200.

[0035] In one embodiment, as Figures 1-6As shown, the vertical movable part 710 includes a movable ring 711 and a plurality of convex ring parts 712. The plurality of convex ring parts 712 are correspondingly sleeved on the upper guide post 320, and the inner wall of the movable ring 711 is fixedly connected to the plurality of convex ring parts 712. A pull-down spring 713 is connected between the convex ring part 712 and the top of the upper fixed plate 300. Two side extension connecting parts 730 are respectively arranged on the outer wall of the movable ring 711. The rotating part 720 includes a rotating ring 721, at least one load-bearing convex part 722 and a plurality of push-pull connecting rods 723. The rotating ring 721 is rotatably arranged on the top of the upper fixed plate 300, and the height of the upper surface of the vertical movable part 710 is lower than the height of the lower surface of the movable ring 711. The load-bearing convex part 722 is arranged on the rotating ring 721, and the upper surface of the load-bearing convex part 722 is an inclined surface. One end of the push-pull connecting rod 723 is movably connected to the side part of the rotating ring 721, and the other end is movably connected to the inner wall of the movable ring 711. In an embodiment of the present invention, when the opening and closing switching mechanism 700 moves upward, the end of the pressing part 800 away from the collection frame 100 will abut against the upper surface of the load-bearing convex part 722. Since the upper surface of the load-bearing convex part 722 is an inclined surface, when the load-bearing convex part 722 moves upward, under the push of the pressing part 800, the load-bearing convex part 722 and the rotating ring 721 rotate around the axis of the collection cylinder 200. The rotating rotating ring 721 pushes the movable ring 711 upward through a plurality of push-pull connecting rods 723, so that the side extension connecting part 730 moves upward and the two semi-circular sampling plates 210 are unfolded. When the opening and closing switching mechanism 700 moves downward and away from the pressing part 800, under the elastic force of the pull-down spring 713, the movable ring 711 moves downward, and the rotating ring 721 pushes the rotating ring 721 to rotate back through the push-pull connecting rod 723, so that the rotating ring 721 rotates back to its original position. The side extension connecting part 730 moves downward along with the movable ring 711, and the side extension connecting part 730 makes the two semi-circular sampling plates 210 rotate relative to each other and close into a cylindrical collection cylinder 200 through the outer extension rod 230.

[0036] In one embodiment, as Figures 1-6As shown, the outer extension rod 230 includes a vertical portion 231 and an inclined portion 232. One end of the vertical portion 231 is rotatably connected to the rotating seat 330 and is fixedly connected to the outer wall of the semi-circular sampling plate 210. The inclined portion 232 is provided at the top of the vertical portion 231 and is fixedly connected, and the inclined portion 232 is bent away from the semi-circular sampling plate 210; the side extension connecting portion 730 includes an outer extension frame 731 and two limiting rollers 732. The outer extension frame 731 is fixed on the side wall of the movable ring 711, and the two limiting rollers 732 are rotatably provided on the outer extension frame 731. A clearance 733 is formed between the two limiting rollers 732, and both the vertical portion 231 and the inclined portion 232 can pass through the clearance 733; in the embodiment of the present invention, the width of the clearance 733 is slightly larger than the thickness of the vertical portion 231 and the inclined portion 232. When the side extension connecting portion 730 moves upward and contacts the inclined portion 232, the limiting roller 732 can push the inclined portion 232, and due to the bending of the inclined portion 232, the vertical portion 231 and the semi-circular sampling plate 210 rotate around the connection portion of the rotating seat 330 and the vertical portion 231; when the clearance 733 moves to the vertical portion 231, the side extension connecting portion 730 moves downward. Due to the vertical state of the vertical portion 231, the two semi-circular sampling plates 210 remain in the closed state.

[0037] In one embodiment, as Figures 1-6 shown, reserved grooves 240 are formed on the adjacent sides of the two semi-circular sampling plates 210. When the two semi-circular sampling plates 210 are closed, the corresponding two reserved grooves 240 form a slot. The opening and closing switching mechanism 700 further includes two limiting plug rod portions 740. The top of the limiting plug rod portion 740 is fixed on the movable ring 711, and the limiting plug rod portion 740 slidably penetrates through the upper fixed plate 300. The limiting plug rod portion 740 can be inserted into the slot; in the embodiment of the present invention, when the two semi-circular sampling plates 210 remain in the closed state, the movable ring 711 continues to move downward. The movable ring 711 drives the limiting plug rod portion 740 to move downward, and the end of the limiting plug rod portion 740 away from the movable ring 711 is inserted into the slot formed by the two reserved grooves 240, so as to effectively limit the two semi-circular sampling plates 210 from opening.

[0038] In one embodiment, as Figures 1-3As shown, a transmission shaft 510 rotatable therewith is provided on the collecting movable frame 500, and one end of the transmission shaft 510 is connected to the rotating shaft 310 through a bevel gear pair 520. A gear portion 540 is provided at the other end of the transmission shaft 510. A guide sleeve 530 and a spiral sleeve 550 are also provided on the collecting movable frame 500. The guide sleeve 530 is sleeved on the guide vertical rod portion 110. The collecting driving portion 600 includes a sampling lead screw member 610, a sampling motor 620 and a vertical rack 630. The sampling lead screw member 610 is rotatably provided on the side of the collecting frame 100, and the spiral sleeve 550 is spirally sleeved on the sampling lead screw member 610. The sampling motor 620 is provided on the top of the collecting frame 100, and the output end of the sampling motor 620 is connected to the end of the sampling lead screw member 610. The vertical rack 630 is provided on the side of the collecting frame 100 and the vertical rack 630 meshes with the gear portion 540. In the embodiment of the present invention, the sampling motor 620 drives the sampling lead screw member 610 to rotate. The rotating sampling lead screw member 610 can make the collecting movable frame 500 move vertically through the spiral cooperation with the spiral sleeve 550 and the guiding restriction of the guide vertical rod portion 110, thereby driving the collecting cylinder 200 to move vertically. The transmission shaft 510 rotates with the collecting movable frame 500, and under the meshing of the vertical rack 630 and the gear portion 540, the transmission shaft 510 rotates itself and the transmission shaft 510 drives the rotating shaft 310 to rotate through the bevel gear pair 520, thereby driving the upper fixed disk 300 and the collecting cylinder 200 to rotate. Furthermore, through the action of the sampling teeth 220 on the soil, the collecting cylinder 200 can be screwed into the soil.

[0039] In one embodiment, as Figure 1 、 Figure 2 and Figure 7 shown, the pressing portion 800 includes a pressing rod 810 and a pressing seat 820. One end of the pressing rod 810 is fixedly connected to the collecting frame 100 and the other end extends to the upper side of the opening and closing switching mechanism 700. The pressing seat 820 is provided at the end of the pressing rod 810 away from the collecting frame 100, and a pressing roller 830 rotatably matched therewith is provided on the pressing seat 820. In the embodiment of the present invention, the opening and closing switching mechanism 700 moves upward and the inclined surface of the load-bearing protrusion 722 is in rolling contact with the corresponding pressing roller 830. Under the pushing of the pressing roller 830, the load-bearing protrusion 722 drives the rotating ring 721 to rotate, and the rolling contact between the load-bearing protrusion 722 and the pressing roller 830 reduces the frictional force of the relative movement between the two.

[0040] In one embodiment, as Figure 1 and Figure 2As shown, the chassis component 400 is hollow, and an avoidance opening 410 is provided on the chassis component 400 and is located directly below the collection cylinder 200 for the collection cylinder 200 to pass through. A bearing plate assembly 430 is further provided on the chassis component 400, and the bearing plate assembly 430 includes a movable support plate 431 provided inside the chassis component 400 and an electric control adjustment cylinder 433 provided on the side of the collection frame 100. A guiding opening 420 is provided on the upper surface of the chassis component 400, and a protruding portion 432 passing through the guiding opening 420 is provided on the movable support plate 431. The end of the electric control adjustment cylinder 433 away from the collection frame 100 is connected to the protruding portion 432. A pressure sensing sheet electrically connected to the electric control adjustment cylinder 433 is provided at the end of the pressing portion 800 away from the collection frame 100. In the embodiment of the present invention, when the collection cylinder 200 moves downward to perform soil sample collection, the collection cylinder 200 passes through the avoidance opening 410. When the soil sample collection is completed and the collection cylinder 200 moves upward to the upper side of the chassis component 400, after the opening and closing switching mechanism 700 contacts the end of the pressing portion 800 away from the collection frame 100, the pressure sensing sheet generates an induction and controls the electric control adjustment cylinder 433 to start working. The electric control adjustment cylinder 433 pulls the protruding portion 432 to move, and the protruding portion 432 drives the movable support plate 431 to move inside the chassis component 400 toward the avoidance opening 410. Further, the movable support plate 431 covers the avoidance opening 410. At this time, the two semi-circular sampling plates 210 open, so that the movable support plate 431 can support the collected soil sample.

[0041] The above embodiments provide a non-compression soil collection device for soil investigation. Among them, when collecting soil, the collection driving part 600 starts to work and drives the collection movable frame 500 to move downward along the guiding vertical rod part 110, and the collection movable frame 500 drives the collection cylinder body 200 and the upper fixing plate 300 to move downward. The opening and closing switching mechanism 700 moves away from the top pressing part 800 and is in a disengaged state. The rotating shaft 310 moving downward rotates itself under the drive of the collection driving part 600 and drives the collection cylinder body 200 to rotate. The rotating shaft 310 drives the collection cylinder body 200 to rotate, and the sampling teeth 220 at the bottom of the semi-circular sampling plate 210 act on the soil on the ground. Then, the collection cylinder body 200 gradually inserts into the soil and the soil sample is stored inside the collection cylinder body 200. Then, the collection driving part 600 drives the collection movable frame 500 to move upward along the guiding vertical rod part 110. The soil inside the collection cylinder body 200 moves up with the collection cylinder body 200. When the collection cylinder body 200 moves to the upper side of the chassis component 400, the opening and closing switching mechanism 700 contacts the end of the top pressing part 800 away from the collection frame 100. The opening and closing switching mechanism 700 continues to move up with the collection cylinder body 200, and the top pressing part 800 starts to act on the opening and closing switching mechanism 700. Under the action of the top pressing part 800, the opening and closing switching mechanism 700 drives the two outer extension rods 230 and makes the two semi-circular sampling plates 210 rotate around the connection between the outer extension rods 230 and the rotating seat 330. Then, the two semi-circular sampling plates 210 unfold, so that the columnar soil sample between the two semi-circular sampling plates automatically disengages from the inside of the collection cylinder body 200, which is convenient for taking out the collected soil sample, and the soil sample is not compressed radially and circumferentially.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A non-compressed soil collection device for soil investigation, comprising a collection frame (100), a collection cylinder (200), an upper fixed plate (300), a chassis component (400), a collection movable frame (500) and a collection drive unit (600), wherein the chassis component (400) is fixed to the bottom of the collection frame (100) and the upper fixed plate (300) is arranged on the top of the collection cylinder (200), a rotating shaft (310) is arranged on the top surface of the upper fixed plate (300) and the rotating shaft (310) is connected to the collection movable frame (500), characterized in that: A guide vertical rod portion (110) is provided on the collection frame (100), and the collection movable frame (500) is slidably matched with the guide vertical rod portion (110); The collection drive unit (600) is arranged on the collection frame (100), and the collection movable frame (500) and the rotating shaft (310) are both connected to the collection drive unit (600); the collection drive unit (600) can drive the collection movable frame (500) to move along the guide vertical rod portion (110), and the collection drive unit (600) can drive the rotating shaft (310) in a moving state to rotate; The collection cylinder (200) is composed of two semicircular sampling plates (210) that are buckled together, each semicircular sampling plate (210) is provided with an outer extension rod (230) on the top side wall, and the bottom edge of the semicircular sampling plate (210) is provided with a sampling tooth (220), and the outer extension rod (230) is rotatably connected to a rotating seat (330) provided on the outer wall of the upper fixed plate (300); It also includes an opening and closing switching mechanism (700) and at least one pressing portion (800); The opening and closing switching mechanism (700) is arranged on the top of the upper fixed plate (300), and the side of the opening and closing switching mechanism (700) is connected to both of the two outer extension rods (230); the pressing portion (800) is arranged on the top of the collection rack (100), and the end of the pressing portion (800) away from the collection rack (100) extends to the upper side of the opening and closing switching mechanism (700); When the bottom of the collection cylinder (200) is located on the upper side of the chassis component (400), the end of the pressing portion (800) away from the collection frame (100) contacts the top of the opening and closing switching mechanism (700) and acts on the opening and closing switching mechanism (700). When the pressing portion (800) acts, the opening and closing switching mechanism (700) can drive the two semicircular sampling plates (210) to rotate around the connection between the outer extension rod (230) and the rotating seat (330).

2. The non-compressed soil sampling device for soil investigation according to claim 1, characterized in that: A plurality of upper guide posts (320) are arranged on the top of the upper fixed plate (300) along the circumferential direction of its edge; The opening and closing switching mechanism (700) comprises a vertical movable part (710), a rotating part (720) and two side extension connecting parts (730); the vertical movable part (710) is arranged on the upper side of the upper fixed plate (300) and the vertical movable part (710) and the plurality of upper guide columns (320) are vertically slidably matched; The rotating part (720) is rotatably arranged on the top of the upper fixed plate (300) and is connected to the vertical movable part (710). The end of the pressing part (800) away from the collecting frame (100) can act on the rotating part (720) and cause the rotating part (720) to rotate. The rotating portion (720) in a rotating state can act on the vertical movable portion (710) and cause it to move vertically along the upper guide column (320); The two side extension connection parts (730) are respectively arranged on the outer wall of the vertical movable part (710), and the side extension connection parts (730) are connected to the outer extension rod (230) on the same side.

3. The non-compressed soil sampling device for soil investigation according to claim 2, characterized in that: The vertical movable portion (710) comprises a movable ring (711) and a plurality of convex ring portions (712); A plurality of convex ring parts (712) are correspondingly slidably sleeved on the upper guide column (320), and the inner wall of the movable ring (711) is fixedly connected to the plurality of convex ring parts (712), the convex ring part (712) and the top of the upper fixed plate (300) are connected via a pull-down spring (713), and two side extension connection parts (730) are respectively arranged on the outer wall of the movable ring (711); The rotating part (720) comprises a rotating ring (721), at least one bearing protrusion (722), and a plurality of push-pull connecting rods (723); The rotating ring (721) is rotatably arranged on the top of the upper fixed plate (300) and the height of the upper surface of the vertical movable part (710) is lower than the height of the lower surface of the movable ring (711); the bearing protrusion (722) is arranged on the rotating ring (721) and the upper surface of the bearing protrusion (722) is an inclined surface; one end of the push-pull connecting rod (723) is movably connected to the side of the rotating ring (721) and the other end is movably connected to the inner wall of the movable ring (711).

4. The non-compressed soil sampling device for soil investigation according to claim 3, characterized in that: The outer extension rod (230) comprises a vertical portion (231) and an inclined portion (232); One end of the vertical portion (231) is rotatably connected to the rotating seat (330) and fixedly connected to the outer wall of the semicircular sampling plate (210); the inclined portion (232) is arranged on the top of the vertical portion (231) and fixedly connected thereto; and the inclined portion (232) is bent toward a side away from the semicircular sampling plate (210); The side extension connection portion (730) comprises an outer extension frame (731) and two limiting rollers (732); The outer extension frame (731) is fixed on the side wall of the movable ring (711) and two limiting rollers (732) are rotatably arranged on the outer extension frame (731), and an avoidance gap (733) is formed between the two limiting rollers (732), and both the vertical portion (231) and the inclined portion (232) can pass through the avoidance gap (733).

5. The non-compressed soil sampling device for soil investigation according to claim 1, characterized in that: The adjacent sides of the two semicircular sampling plates (210) are each provided with a reserved groove (240); When the two semicircular sampling plates (210) are buckled together, the two corresponding reserved grooves (240) form a slot, and the opening and closing switching mechanism (700) further comprises two limiting insertion rod portions (740); The top of the limiting rod portion (740) is fixed on the movable ring (711) and the limiting rod portion (740) slides through the upper fixed plate (300), and the limiting rod portion (740) can be inserted into the interior of the slot.

6. The non-compressed soil sampling device for soil investigation according to claim 1, characterized in that: The collection movable frame (500) is provided with a transmission shaft (510) that rotates therewith, and one end of the transmission shaft (510) is connected to the rotating shaft (310) via a bevel gear pair (520), and the other end of the transmission shaft (510) is provided with a gear portion (540); The collection movable frame (500) is also provided with a guide sleeve (530) and a spiral sleeve (550), wherein the guide sleeve (530) is sleeved on the guide vertical rod portion (110); The sampling drive unit (600) comprises a sampling screw rod (610), a sampling motor (620) and a vertical rack (630); The sampling screw member (610) is rotatably arranged on the side of the collection frame (100) and the spiral sleeve (550) is spirally sleeved on the sampling screw member (610). The sampling motor (620) is arranged on the top of the collection frame (100) and the output end of the sampling motor (620) is connected to the end of the sampling screw member (610). The vertical rack (630) is arranged on the side of the collection frame (100) and the vertical rack (630) is meshed with the gear part (540).

7. The non-compressed soil sampling device for soil investigation according to claim 1, characterized in that: The pressing portion (800) comprises a pressing rod (810) and a pressing seat (820); One end of the pressing rod (810) is fixedly connected to the collection frame (100) and the other end extends to the upper side of the opening and closing switching mechanism (700). The pressing seat (820) is arranged at the end of the pressing rod (810) away from the collection frame (100) and a pressing roller (830) rotatably matched therewith is arranged on the pressing seat (820).

8. The non-compressed soil collecting device for soil investigation according to any one of claims 1 to 7, characterized in that: The chassis component (400) is hollow, and is provided with an escape opening (410) located directly below the collection cylinder (200) and allowing the collection cylinder (200) to pass through. The chassis component (400) is also provided with a bearing plate assembly (430), and the bearing plate assembly (430) comprises a movable supporting plate (431) provided inside the chassis component (400) and an electrically controlled regulating cylinder (433) provided on the side of the collection frame (100); The upper surface of the chassis component (400) is provided with a guide opening (420), and the movable supporting plate (431) is provided with a protrusion (432) passing through the guide opening (420); The end of the electrically controlled regulating cylinder (433) away from the collection rack (100) is connected to the protruding portion (432), and the end of the pressing portion (800) away from the collection rack (100) is provided with a pressure sensing sheet electrically connected to the electrically controlled regulating cylinder (433).

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