CN118329516B - Portable investigation sampling device for Gobi soil - Google Patents

Abstract

The invention relates to the technical field of soil sampling, in particular to a portable investigation sampling device for gobi soil, which comprises a hollow rod body, a soil sample collector and two support rods, wherein the lower ends of the support rods are provided with folding pedals, the upper ends of the two support rods are provided with a connecting seat, an interlayer is arranged in the side wall of the soil sample collector, the lower end of the soil sample collector is connected with a soil breaking head, a plurality of anti-falling claws are arranged on the inner wall of the lower end of the soil sample collector, a long push rod is arranged in the interlayer, a center rod is arranged in the hollow rod body, the top of the inner side of the soil sample collector is provided with a soil withdrawing plate, and the top of the soil sample collector is also provided with a lever mechanism. The invention realizes portability of the hard soil sampler in a split assembly mode, is provided with the anti-falling claw to finish pinch-off separation of the hard soil sample, and can conveniently and rapidly push the hard soil sample out of the soil sample collector by matching with the soil withdrawing plate, thereby realizing labor-saving effect by matching the handle with the screw thread and greatly improving soil sampling efficiency.

Description

A portable survey sampling device for Gobi soil

Technical Field

The invention relates to the technical field of soil sampling, and in particular to a portable survey sampling device for Gobi soil.

Background Art

There are roughly two types of existing soil samplers. One has an extremely simple structure, with a "T"-shaped main body and a hollow tube in the lower part, which is suitable for softer coatings. The operation process is to step on the top crossbar of the "T"-shaped soil sampler, step the lower hollow tube into the soil, and finally grab the crossbar and rotate it several times before pulling it upward to complete the soil sampling. The other is a vehicle-mounted type, with the soil sampling mechanism set on a carrier vehicle, which is equipped with complex equipment such as a hydraulic system. This type is suitable for hard soil layers and situations where deep sampling is required. The soil quality of the Gobi soil is between the soft soil layer and the hard soil layer. It is difficult for the traditional simple "T"-shaped soil sampler to step into the soil layer at the target depth. The harsh environment makes it impossible for the exploration vehicle to carry a large-scale vehicle-type hydraulic soil sampler, and most of other non-vehicle-type soil samples for hard soil layers need to be coordinated with a hydraulic system, which has extremely poor portability and is not competent for sampling harder soil under harsh conditions.

Summary of the invention

Based on this, it is necessary to provide a portable survey sampling device for Gobi soil in response to the existing technical problems.

In order to solve the problems of the prior art, the technical solution adopted by the present invention is:

A portable survey and sampling device for Gobi soil, comprising a hollow shaft, a soil sample collector and two support rods symmetrically arranged on both sides of the hollow shaft, each support rod having a folding pedal at the lower end, the upper ends of the two support rods being hinged to a connecting seat, the hollow shaft passing through the connecting seat and the upper half of the hollow shaft being threadedly matched with the connecting seat, the upper end of the hollow shaft being provided with a first handle, the soil sample collector being arranged at the lower end of the hollow shaft, the soil sample collector being a cylindrical structure with an opening at the lower end and a sandwich layer being arranged in the side wall thereof, the lower end of the soil sample collector being connected to a soil breaking head, and a plurality of anti-falling claws evenly distributed in a circumferential direction being hingedly arranged on the inner wall of the lower end of the soil sample collector, The interlayer is provided with a plurality of long push rods for squeezing out the anti-fall claws from the inner wall of the soil sample collector, and the inner wall of the lower end of the soil sample collector is provided with a plurality of rectangular openings for the anti-fall claws to turn inward. A center rod is provided in the hollow rod body, and the upper end of the center rod extends upward from the hollow rod body. A soil withdrawal plate is provided on the inner top of the soil sample collector, and the lower end of the center rod is axially connected to the center of the soil withdrawal plate. The top of the soil sample collector is also provided with a plurality of groups of lever mechanisms for connecting the soil withdrawal plate and the long push rod, and the lever mechanism is used to make the movement directions of the long push rod and the soil withdrawal plate opposite, the lower end of the center rod is threadedly matched with the top of the soil sample collector, and the upper end of the center rod is connected to a second handle.

Preferably, the lever mechanism includes a first vertical rod, a second vertical rod, a fixed pin rod located therebetween, and a seesaw connecting the three, the lower end of the first vertical rod downwardly passing through the top of the soil sample collector and extending into the interlayer and fixedly connected to the top of the long push rod, the fixed pin rod is vertically fixedly arranged on the top of the soil sample collector, the lower end of the second vertical rod downwardly passing through the top of the soil sample collector and contacting the top of the soil retreating plate, one end of the seesaw is hinged to the upper end of the second vertical rod, the free end of the seesaw is provided with a strip through groove consistent with its own length direction, the upper ends of the first vertical rod and the fixed pin rod are fixedly connected with pin shafts extending into the strip through groove and slidably matched therewith, and the upper end of the first vertical rod is connected to the outer wall of the hollow rod body by a tension spring.

Preferably, a filling cylinder is embedded in the interlayer, and a plurality of accommodating grooves for accommodating a long push rod are provided on the side wall of the filling cylinder. A first hinge groove is provided at the lower end of the long push rod, and a short connecting rod is hinged in the first hinge groove. The free end of the short connecting rod is hinged downward to the outer side of the anti-fall claw, and the top end of the anti-fall claw is hinged to the two side groove walls of the accommodating groove.

Preferably, the hollow rod body is composed of two first hollow tubes that are threadedly connected together, a threaded column for upwardly connecting the first hollow tube is provided at the top center of the soil sample collector, a hollow short rod is provided at the upper end of the hollow rod body and is threadedly connected to the corresponding first hollow tube, the first handle passes through the hollow short rod horizontally, and the center rod passes through the first handle upwardly, and a positioning sleeve is embedded at the joint between the first hollow tube and the threaded column, the joint between the first hollow tube and the first hollow tube, and the joint between the first hollow tube and the hollow short rod, a circle of positioning grooves is formed on the outer wall of the positioning sleeve, and corresponding thread holes are opened on the side walls of the first hollow tube, the threaded column and the hollow short rod, and two symmetrically distributed first top screws are provided on both sides of each positioning sleeve, and each first top screw is screwed into the corresponding thread hole and abuts against the positioning groove of the corresponding positioning sleeve.

Preferably, the support rod is composed of two second hollow tubes screwed together, and two symmetrically distributed second hinge grooves are provided on the outer wall of the connecting seat, and the two second hinge grooves are respectively hinged to the upper ends of the corresponding two second hollow tubes, and the folding pedal is composed of two anti-slip flat plates, which are connected by a hinge, and a hinge seat for hingedly connecting the lower end of the second hollow tube is fixedly provided on the top of one of the anti-slip flat plates.

Preferably, the center rod is composed of three solid rods connected together, one ends of two adjacent solid rods are plugged into each other and fixed by a second top screw, wherein the lower end of the solid rod located at the bottom is provided with an external threaded portion, and the external threaded portion is threadedly matched with a lowest positioning sleeve, and a connecting disc is also provided below the external threaded portion, and a limiting sleeve for covering the connecting disc is provided at the top center of the soil-removing plate, and the connecting disc is axially connected to the limiting sleeve, and the middle part of the second handle is sleeved on the upper end of the top solid rod, and the two are fixed by a third top screw.

Preferably, a flange sleeve is provided at the lower end of the hollow rod body, and a plurality of support columns evenly distributed along the circumferential direction are provided between the flange sleeve and the soil sample collector, and the upper and lower ends of the support columns are respectively inserted into the top of the flange sleeve and the soil sample collector, and a U-shaped seat axially connected to the corresponding pin shaft is provided at the upper end of the first vertical rod, and the two ends of the tension spring are respectively connected to the U-shaped seat and the flange sleeve.

Preferably, the soil sample collector is composed of a tubular lining and a tubular outer lining, the interlayer is formed between the outer wall of the tubular lining and the inner wall of the tubular outer lining, a top cover is fixedly provided on the upper ends of the tubular lining and the tubular outer lining, an annular portion embedded downwardly in the interlayer is formed on the bottom of the outer edge of the top cover, an avoidance through hole for avoiding the center rod is formed at the center of the top cover, an annular beveled portion for contacting the outer side of the lower end of the anti-fall claw is formed on the inner wall of the lower end of the tubular outer lining, an annular flange is formed on the outer edge of the lower end of the tubular lining, a groove for accommodating the annular flange is formed at the bottom of the annular beveled portion, the depth of the groove is greater than the thickness of the annular flange, and a threaded connection portion for threaded cooperation with the inner wall of the groove is formed on the top inner edge of the soil breaking head.

Preferably, the width of the rectangular opening is greater than the width of the anti-fall claw, and the lower end of each accommodating groove is formed with two inlays symmetrically distributed on the inner wall of the filling cylinder, and a connecting shaft for the anti-fall claw to be hinged is provided between the upper ends of the two inlays, and the two inlays are respectively embedded in the gap between the anti-fall claw and the rectangular opening.

Preferably, spiral blades are formed on the outer wall of the soil sample collector.

Compared with the prior art, the present invention has the following beneficial effects:

Firstly, the present invention realizes the purpose of portability and quick on-site assembly through the form of split assembly, which greatly improves the portability of the soil extractor;

Secondly, the present invention applies downward pressure to the soil sample collector by the body weight and then cooperates with the thread to make the hollow shaft drive the soil sample collector to smoothly extend under the soil surface to collect samples during the rotation of the soil breaking head;

Thirdly, the present invention is equipped with an anti-fall claw to complete the pinching and separation of the soil sample of the hard soil layer, and can conveniently and quickly push the hard soil sample out of the soil sample collector in conjunction with the soil withdrawal plate.

Fourthly, the present invention achieves a labor-saving effect by matching the handle with the thread, thereby greatly improving the soil taking efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a three-dimensional structure of the present invention;

FIG2 is a schematic plan cross-sectional view of the present invention;

FIG3 is a partial cross-sectional view of the lifting principle of the hollow shaft of the present invention;

FIG4 is a schematic diagram of the three-dimensional structure of the foldable footrest of the present invention;

FIG5 is a perspective exploded schematic diagram of a soil sample collector according to the present invention;

FIG6 is an enlarged schematic diagram of the structure at A in FIG5 ;

7 is a cross-sectional view of the lower end structure of the soil sample collector of the present invention;

FIG8 is a plan cross-sectional view of the lever mechanism of the present invention;

FIG9 is a perspective schematic diagram of a lever mechanism of the present invention;

FIG10 is a plan cross-sectional view of the first handle of the present invention;

FIG11 is a plan cross-sectional view of the second handle of the present invention;

The numbers in the figure are: 1-hollow rod body; 2-soil sample collector; 3-support rod; 4-connecting seat; 5-first handle; 6-soil breaking head; 7-anti-fall claw; 8-long push rod; 9-rectangular opening; 10-soil withdrawal plate; 11-lever mechanism; 12-second handle; 13-first vertical rod; 14-second vertical rod; 15-fixed pin rod; 16-rocker; 17-strip through groove; 18-pin shaft; 19-tension spring; 20-filling cylinder; 21-accommodating groove; 22-first hinge groove; 23-short connecting rod; 24-first hollow tube; 25-threaded column; 26-hollow short rod; 27-positioning sleeve; 28-positioning groove; 29-first top screw nail; 30-second hollow tube; 31-second hinge groove; 32-anti-slip plate; 33-hinge; 34-hinge seat; 35-solid rod; 36-second top screw; 37-external threaded portion; 38-connecting disc; 39-limiting sleeve; 40-third top screw; 41-flange sleeve; 42-support column; 43-U-shaped seat; 44-tubular lining; 45-tubular outer lining; 46-top cover; 47-annular portion; 48-avoidance through hole; 49-annular bevel portion; 50-annular flange; 51-sunk groove; 52-threaded connection portion; 53-embedded strip; 54-connecting shaft; 55-spiral leaf; 56-center rod; 57-folding pedal.

DETAILED DESCRIPTION

In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

Referring to Figures 1 to 11, a portable investigation and sampling device for Gobi soil is shown, comprising a hollow shaft 1, a soil sample collector 2 and two support rods 3 symmetrically arranged on both sides of the hollow shaft 1, each support rod 3 is provided with a folding pedal 57 at the lower end, and the upper ends of the two support rods 3 are hinged to a connecting seat 4, the hollow shaft 1 passes through the connecting seat 4 and the upper half of the hollow shaft 1 is threadedly matched with the connecting seat 4, the upper end of the hollow shaft 1 is provided with a first handle 5, the soil sample collector 2 is arranged at the lower end of the hollow shaft 1, the soil sample collector 2 is a cylindrical structure with an opening at the lower end and a sandwich is arranged in its side wall, the lower end of the soil sample collector 2 is connected to a soil breaking head 6, and a plurality of anti-fall claws 7 evenly distributed along the circumferential direction are hingedly arranged on the inner wall of the lower end of the soil sample collector 2, A plurality of long push rods 8 for squeezing out the anti-fall claws 7 from the inner wall of the soil sample collector 2 are arranged in the interlayer, and a plurality of rectangular openings 9 for the anti-fall claws 7 to be turned inward are opened on the inner wall of the lower end of the soil sample collector 2. A central rod 56 is arranged in the hollow shaft 1, and the upper end of the central rod 56 extends upward from the hollow shaft 1. A soil-rejecting plate 10 is arranged on the inner top of the soil sample collector 2, and the lower end of the central rod 56 is axially connected to the center of the soil-rejecting plate 10. A plurality of groups of lever mechanisms 11 for connecting the soil-rejecting plate 10 and the long push rod 8 are also arranged on the top of the soil sample collector 2. The lever mechanism 11 is used to make the movement directions of the long push rod 8 and the soil-rejecting plate 10 opposite, and the lower end of the central rod 56 is threadedly matched with the top of the soil sample collector 2 and the upper end of the central rod 56 is connected to a second handle 12.

The device is simple and light. After the device is assembled, the hollow rod 1 is erected in an upright state through the support rods 3 on both sides. After opening the folding pedal 57, the worker steps on it with both feet, and the soil-breaking head 6 at the bottom of the soil sample collector 2 is pressed into the soil surface by the weight of the whole body. Then, the hollow rod 1 is driven to rotate by the first handle 5, and the upper half of the hollow rod 1 is threadedly connected with the connecting seat 4 at the upper end of the two support rods 3. Therefore, the hollow rod 1 will move downward along its own axis during the rotation process, thereby driving the soil sample collector 2 to rotate and move downward. During the rotation and downward movement process, the soil sample collector 2 breaks the soil downward through the soil-breaking head 6 at the bottom and extends below the soil surface until the soil sample collector 2 is completely screwed into the soil layer. Then, the center rod 56 is driven to rotate by the second handle 12, and the lower end of the center axis cooperates with the top thread of the soil sample collector 2. The soil-removing plate 10 is moved downward by the rotation of the central axis. During this process, the soil-removing plate 10 pries the long push rod 8 downward through the lever mechanism 11. As the long push rod 8 moves downward, a circle of anti-falling claws 7 at the inner bottom of the soil sample collector 2 is turned inward and buckled into the soil sample. Then, the hollow rod body 1 is reversed by the first handle 5 to move the soil sample collector 2 upward out of the soil layer. Finally, the soil-removing plate 10 is moved downward by reversing the second handle 12. During this process, the long push rod 8 is reset upward by the lever mechanism 11, so that the anti-falling claws 7 are retracted into the inner wall of the soil sample collector 2. Finally, the second handle 12 is continued to be rotated to separate the threaded cooperation between the lower end of the central rod 56 and the top of the soil sample collector 2 to make the soil-removing plate 10 free. Then, the second handle 12 is pressed down to drive the soil-removing plate 10 downward through the central rod 56 until the soil sample is pushed downward out of the soil sample collector 2.

In order to make the soil-removing plate 10 and the long push rod 8 have a relationship of moving toward each other, that is, the soil-removing plate 10 moves up to drive the long push rod 8 to move down, and the soil-removing plate 10 moves down to drive the long push rod 8 to move up and reset, the following features are specifically set:

The lever mechanism 11 includes a first vertical rod 13, a second vertical rod 14, a fixed pin rod 15 located therebetween, and a seesaw 16 connecting the three. The lower end of the first vertical rod 13 passes downward through the top of the soil sample collector 2 and extends into the interlayer to be fixedly connected to the top of the long push rod 8. The fixed pin rod 15 is fixedly arranged on the top of the soil sample collector 2 in a vertical state. The lower end of the second vertical rod 14 passes downward through the top of the soil sample collector 2 and contacts the top of the soil-removing plate 10. One end of the seesaw 16 is hinged to the upper end of the second vertical rod 14. A strip through groove 17 consistent with its own length direction is opened at the free end of the seesaw 16. The upper ends of the first vertical rod 13 and the fixed pin rod 15 are fixedly connected with a pin shaft 18 extending into the strip through groove 17 and slidingly cooperating therewith. The upper end of the first vertical rod 13 is connected to the outer wall of the hollow shaft 1 by a tension spring 19.

When the earth-removing plate 10 moves upward, it contacts the second vertical rod 14 to make it move vertically upward, thereby lifting one end of the rocker plate 16 hinged thereto, while the fixing pin 15 is fixed, so that the rocker plate 16 uses the pin shaft 18 at the top of the fixing pin 15 as a fulcrum to make the end of the rocker plate 16 connected to the first vertical rod 13 move downward, thereby pressing the first vertical rod 13 downward through the rocker plate 16, and then driving the long push rod 8 to move downward through the downward movement of the first vertical rod 13. In this process, the strip through groove 17 slides with the pin shaft 18 at the top of the first vertical rod 13 and the fixing pin 15 to adapt to the position change of the rocker plate 16 during the rotation process; when the earth-removing plate 10 moves downward, it loses the upper pressure on the second vertical rod 14. At this time, under the action of the tension spring 19, the tension spring 19 will lift the first vertical rod 13 upward, thereby moving the long push rod 8 upward and resetting, thereby achieving the reversing effect of the movement direction of the earth-removing plate 10 and the long push rod 8.

In order to ensure that the long push rod 8 can stably move along the generatrix direction of the soil sample collector 2 and can smoothly push the anti-fall claw 7 to turn outward, the following features are specifically set:

A filling cylinder 20 is embedded in the interlayer, and a plurality of accommodating grooves 21 for accommodating the long push rod 8 are provided on the side wall of the filling cylinder 20. A first hinge groove 22 is provided at the lower end of the long push rod 8, and a short connecting rod 23 is hinged in the first hinge groove 22. The free end of the short connecting rod 23 is hinged downward to the outer side of the anti-fall claw 7, and the top end of the anti-fall claw 7 is hinged to the two side groove walls of the accommodating groove 21.

The interlayer cavity is filled by arranging a filling cylinder 20 in the interlayer, and a receiving groove 21 is opened on it for the long push rod 8 to stably translate up and down therein. During the downward movement of the long push rod 8, the short connecting rod 23 at the bottom pushes the outer side of the anti-fall claw 7. Since the inner upper end of the anti-fall claw 7 is hinged at a fixed point, during the downward movement of the long push rod 8, the short connecting rod 23 or the outside applies a thrust to make the anti-fall claw 7 buckle inward around the hinge point and embed into the soil sample, thereby grasping the soil sample inside the soil sample collector 2 from the bottom, so that the soil sample collector 2 can smoothly separate the soil sample from the soil layer during the subsequent rotation and ascent; and during the upward movement and resetting process, the long push rod 8 will pull the outer side of the anti-fall claw 7 upward through the short connecting rod 23, so that the anti-fall claw 7 rotates again with the hinge point as the rotation center and is retracted into the rectangular opening 9, thereby not affecting the next extension of the soil sample collector 2 into the soil layer.

In order to achieve the portability of the device and the integrity of the assembled hollow shaft 1, the following features are specifically set:

The hollow shaft 1 is composed of two first hollow tubes 24 connected by threads. A threaded column 25 for upwardly connecting the first hollow tube 24 is provided at the top center of the soil sample collector 2. A hollow short rod 26 connected by threads to the corresponding first hollow tube 24 is provided at the upper end of the hollow shaft 1. The first handle 5 passes through the hollow short rod 26 horizontally. The center rod 56 passes through the first handle 5 upward. The joint between the first hollow tube 24 and the threaded column 25, the first hollow tube 24 and the first hollow tube 24 and the joint of the first hollow tube 24 and the hollow short rod 26 are embedded with a positioning sleeve 27, a circle of positioning grooves 28 are formed on the outer wall of the positioning sleeve 27, and corresponding threaded holes are opened on the side walls of the first hollow tube 24, the threaded column 25 and the hollow short rod 26. Two symmetrically distributed first top screws 29 are provided on both sides of each positioning sleeve 27, and each first top screw 29 is screwed into the corresponding thread hole and abuts against the positioning groove 28 of the corresponding positioning sleeve 27.

The hollow rod body 1 is formed by connecting two half-meter long first hollow tubes 24, and the ends of the two are screwed together by threads. In order to ensure that the connected first hollow tubes 24 will not loosen or separate during the soil excavation process, thread holes are opened and first top screws 29 are used to limit the rotation of the two connected first hollow tubes 24, thereby preventing relative rotation between the two and causing looseness or separation. A positioning sleeve 27 with a positioning groove 28 is embedded on the inner side of the connecting part of the first hollow tubes 24 to limit the first top screw 29, so that the first top screw completely enters the inner side of the first hollow tube 24 at that time, thereby ensuring that the first top screw 29 can be simultaneously located in the corresponding thread holes on the two first hollow tubes 24 to achieve a limiting effect.

In order to realize the portability and quick release characteristics of the support rod 3 and the folding pedal 57, the following features are specifically set:

The support rod 3 is composed of two second hollow tubes 30 screwed together, and two symmetrically distributed second hinge grooves 31 are provided on the outer wall of the connecting seat 4. The two second hinge grooves 31 are respectively hinged to the upper ends of the two corresponding second hollow tubes 30. The folding pedal 57 is composed of two anti-slip flat plates 32, and the two anti-slip flat plates 32 are connected by a hinge 33. A hinge seat 34 for hingedly connecting the lower end of the second hollow tube 30 is fixedly provided on the top of one of the anti-slip flat plates 32.

Each support rod 3 is also composed of two second hollow tubes 30 threadedly connected together. The folding pedal 57 can be folded by the middle hinge 33 when not in use, thereby reducing the packing area by half, greatly improving the portability and the speed of on-site assembly. In addition, the folding pedal 57 is connected to the lower end of the support rod 3 through an articulated seat 34, which adds a degree of freedom of movement to the folding pedal 57, so that no matter at what angle the support rod 3 supports the soil sample collector 2, the folding pedal 57 can always be laid flat on the ground for stepping on.

In order to realize the split assembly and disassembly of the center rod 56 to achieve the purpose of portability and space saving, the following features are specifically set:

The center rod 56 is composed of three solid rods 35 connected together, one ends of two adjacent solid rods 35 are plugged into each other and fixed by a second top screw 36, wherein the lower end of the solid rod 35 located at the bottom is provided with an external threaded portion 37, and the external threaded portion 37 is threadedly matched with a lower positioning sleeve 27, and a connecting disc 38 is also provided below the external threaded portion 37. A limiting sleeve 39 for covering the connecting disc 38 is provided at the top center of the soil-removing plate 10, and the connecting disc 38 is axially connected to the limiting sleeve 39. The middle part of the second handle 12 is sleeved on the upper end of the uppermost solid rod 35, and the two are fixed by a third top screw 40.

The three solid rods 35 are butted together to form a complete long center rod 56, and are radially fixed at the connection point by a second top screw 36 to prevent the solid rods 35 from separating, making disassembly and assembly convenient. In addition, the lower end of the solid rod 35 located at the bottom is formed with an external thread portion 37 with a diameter thicker than the rod diameter of the solid rod 35, and the corresponding inner wall of the positioning sleeve 27 is provided with an internal thread matched therewith, so that the solid rod 35 can be driven to rotate by the second handle 12 above, and then the solid rod 35 can be moved up and down by thread matching, thereby driving The soil-removing plate 10 connected thereto below is lifted and displaced. During the rising process of the soil-removing plate 10, the anti-falling claw 7 is turned outward by the lever mechanism 11 and the long push rod 8. During the descending process of the soil-removing plate 10, the push rod 8 is stretched by the action of the tension spring 19 to make the anti-falling claw 7 flip inward and reset. As the center rod 56 continues to rotate, the soil-removing plate 10 is driven to move downward until the external threaded portion 37 is separated from the positioning sleeve 27, thereby losing the threaded connection effect. At this time, the center rod 56 can drive the soil-removing plate 10 to move downward quickly, thereby pushing the columnar soil sample in the soil sample collector 2 downward to realize the soil-removing process.

In order to make the long push rod 8 have the effect of automatic reset so as to achieve the purpose of driving the anti-fall claw 7 to retract the rectangular opening 9, the following features are specifically set:

A flange sleeve 41 is sleeved on the lower end of the hollow rod body 1, and a plurality of support columns 42 evenly distributed along the circumferential direction are arranged between the flange sleeve 41 and the soil sample collector 2. The upper and lower ends of the support columns 42 are respectively inserted into the top of the flange sleeve 41 and the soil sample collector 2. A U-shaped seat 43 axially connected to the corresponding pin shaft 18 is arranged on the upper end of the first vertical rod 13, and the two ends of the tension spring 19 are respectively connected to the U-shaped seat 43 and the flange sleeve 41.

The flange sleeve 41 is fixedly mounted above the soil sample collector 2 by means of a plurality of support columns 42, serving as a fixed hanging point for the upper end of the tension spring 19, and the lower end of the tension spring 19 is connected to the top of the first vertical rod 13 via a U-shaped seat 43, thereby achieving a pulling effect on the long push rod 8, thereby achieving the purpose of automatically lifting the long push rod 8 upward, and then driving the anti-fall claw 7 to automatically retract into the rectangular opening 9 by the upward movement and resetting of the long push rod 8.

In order to realize the reasonable assembly of the components of the soil sample collector 2 and further limit the position of each movable part, the following features are specifically set:

The soil sample collector 2 is composed of a tubular liner 44 and a tubular outer liner 45, wherein the interlayer is formed between the outer wall of the tubular liner 44 and the inner wall of the tubular outer liner 45, and a top cover 46 is fixedly provided on the upper ends of the tubular liner 44 and the tubular outer liner 45, and an annular portion 47 embedded downwardly in the interlayer is formed on the outer bottom of the outer edge of the top cover 46, and an avoidance through hole 48 for avoiding the center rod 56 is formed at the center of the top cover 46, and an annular bevel portion 49 for contacting the outer side of the lower end of the anti-fall claw 7 is formed on the inner wall of the lower end of the tubular outer liner 45, and an annular flange 50 is formed on the outer edge of the lower end of the tubular liner 44, and a sink 51 for accommodating the annular flange 50 is formed at the bottom of the annular bevel portion 49, and the depth of the sink 51 is greater than the thickness of the annular flange 50, and the top inner edge of the soil breaking head 6 is formed with a threaded connection portion 52 for threaded cooperation with the inner wall of the sink 51.

The tubular outer lining 45 and the annular portion 47 are connected by threads or interference fit to prevent the aperture of the through hole 48 from being larger than the diameter of the limiting sleeve 39 to prevent obstruction of the upward movement of the soil retreating plate 10. The annular bevel portion 49 is used for the anti-fall claw 7 to abut against it during the retraction of the interlayer. When the outer side of the anti-fall claw 7 abuts against the annular bevel portion 49, the inner side wall of the anti-fall claw 7 is flush with the inner wall of the tubular liner 44, thereby preventing obstruction of the soil sample from entering the tubular liner 44. At the same time, the soil breaking head 6 is screwed into the sinking groove 51 through the threaded connection portion 52, so that the soil breaking head 6 can be flexibly disassembled and assembled so that it can be conveniently replaced. During the tightening process of the soil breaking head 6, the annular flange 50 at the lower end of the tubular liner 44 will be pressed upward into the sinking groove 51, further ensuring the integrity of the soil sample collector 2 after assembly.

In order to prevent soil samples from entering the interlayer from both sides of the rectangular opening 9, the following features are specifically set:

The width of the rectangular opening 9 is greater than that of the anti-fall claw 7. The lower end of each accommodating groove 21 is formed with two inlays 53 symmetrically distributed on the inner wall of the filling cylinder 20. A connecting shaft 54 for hinged connection of the anti-fall claw 7 is provided between the upper ends of the two inlays 53. The two inlays 53 are respectively embedded in the gap between the anti-fall claw 7 and the rectangular opening 9.

Since the connecting shaft 54 for the anti-fall claw 7 to be axially connected is arranged close to the tubular liner 44, the anti-fall claw 7 needs to be covered by two inserts 53 on both sides of the anti-fall claw 7, and the upper ends of the two inserts 53 are used for fixing the connecting shaft 54. In this way, it is ensured that the anti-fall claw 7 can be kept flush with the inner wall of the tubular liner 44 when not in use. At the same time, due to the sealing effect of the inserts 53 on both sides of the rectangular opening 9, it is also ensured that a large amount of soil debris will not enter the interlayer during the soil excavation process.

In order to further increase the efficiency of the soil sample collector 2 entering the soil, spiral leaves 55 are formed on the outer wall of the soil sample collector 2. When the first handle 5 drives the hollow shaft 1 to rotate and drives the soil sample collector 2 to break through the soil and sink into the soil through threaded cooperation, spiral leaves 55 are added to the outer side of the soil sample collector 2 so that the soil sample collector 2 can further increase the force of rotation and sinking after entering the soil, thereby further improving the efficiency of sinking sampling of the soil sample collector 2.

The above embodiments only express one or several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims (9)

1. A portable survey sampling device for Gobi soil, characterized in that it comprises a hollow shaft (1), a soil sample collector (2) and two support rods (3) symmetrically arranged on both sides of the hollow shaft (1), each support rod (3) being provided with a folding pedal (57) at the lower end of each support rod (3), the upper ends of the two support rods (3) being hingedly connected to a connecting seat (4), the hollow shaft (1) passing through the connecting seat (4) and the upper half of the hollow shaft (1) being threadedly engaged with the connecting seat (4), the upper end of the hollow shaft (1) being provided with a first handle (5), the soil sample collector (2) being arranged at the lower end of the hollow shaft (1), the soil sample collector (2) being a cylindrical structure with an opening at the lower end and a sandwich layer being arranged in the side wall thereof, the lower end of the soil sample collector (2) being connected with a soil breaking head (6), the lower end inner wall of the soil sample collector (2) being hingedly provided with a plurality of anti-fall claws (7) evenly distributed in the circumferential direction, the sandwich layer being provided with A plurality of long push rods (8) are provided for squeezing out the anti-fall claws (7) from the inner wall of the soil sample collector (2); a plurality of rectangular openings (9) are provided on the inner wall of the lower end of the soil sample collector (2) for allowing the anti-fall claws (7) to be turned inward; a central rod (56) is provided in the hollow rod body (1); the upper end of the central rod (56) extends upward out of the hollow rod body (1); a soil return plate (10) is provided on the inner top of the soil sample collector (2); the central rod (56) is provided on the inner top of the soil sample collector (2); The lower end of the rod (56) is axially connected to the center of the soil-removing plate (10); the top of the soil sample collector (2) is also provided with a plurality of groups of lever mechanisms (11) for connecting the soil-removing plate (10) and the long push rod (8); the lever mechanisms (11) are used to make the long push rod (8) and the soil-removing plate (10) move in opposite directions; the lower end of the center rod (56) is threadedly matched with the top of the soil sample collector (2); and the upper end of the center rod (56) is connected to a second handle (12); The lever mechanism (11) comprises a first vertical rod (13), a second vertical rod (14), a fixed pin rod (15) located between the first vertical rod (13), and a seesaw (16) connecting the three. The lower end of the first vertical rod (13) passes downward through the top of the soil sample collector (2) and extends into the interlayer to be fixedly connected to the top of the long push rod (8). The fixed pin rod (15) is fixedly arranged on the top of the soil sample collector (2) in a vertical state. The lower end of the second vertical rod (14) passes downward through the top of the soil sample collector (2). The first vertical rod (13) and the fixed pin rod (15) are both fixedly connected to the upper ends of the first vertical rod (13) and the fixed pin rod (15), and the upper ends of the first vertical rod (13) and the fixed pin rod (15) are both fixedly connected to the outer wall of the hollow rod body (1) via a tension spring (19). 2. A portable survey and sampling device for Gobi soil according to claim 1, characterized in that a filling cylinder (20) is embedded in the interlayer, and a plurality of accommodating grooves (21) for accommodating a long push rod (8) are provided on the side wall of the filling cylinder (20), and a first hinge groove (22) is provided at the lower end of the long push rod (8), and a short connecting rod (23) is hinged in the first hinge groove (22), and the free end of the short connecting rod (23) is hinged downward to the outer side of the anti-fall claw (7), and the top end of the anti-fall claw (7) is hinged to the two side groove walls of the accommodating groove (21). 3. A portable survey sampling device for Gobi soil according to claim 1, characterized in that the hollow shaft (1) is composed of two first hollow tubes (24) threadedly connected to each other, a threaded column (25) for upwardly connecting to the first hollow tube (24) is provided at the top center of the soil sample collector (2), a hollow short rod (26) threadedly connected to the corresponding first hollow tube (24) is provided at the upper end of the hollow shaft (1), the first handle (5) passes through the hollow short rod (26) horizontally, the center rod (56) passes through the first handle (5) upwardly, the first hollow tube (24) and the threaded column (25) are connected to each other. A positioning sleeve (27) is embedded in the joint, the joint between the first hollow tube (24) and the first hollow tube (24), and the joint between the first hollow tube (24) and the hollow short rod (26). A circle of positioning grooves (28) is formed on the outer wall of the positioning sleeve (27). Corresponding thread holes are opened on the side walls of the first hollow tube (24), the threaded column (25), and the hollow short rod (26). Two symmetrically distributed first top screws (29) are provided on both sides of each positioning sleeve (27). Each first top screw (29) is screwed into the corresponding thread hole and contacts the positioning groove (28) of the corresponding positioning sleeve (27). 4. A portable survey and sampling device for Gobi soil according to claim 1, characterized in that the support rod (3) is composed of two second hollow tubes (30) screwed together, and two symmetrically distributed second hinge grooves (31) are provided on the outer wall of the connecting seat (4), and the two second hinge grooves (31) are respectively hinged to the upper ends of the corresponding two second hollow tubes (30), and the folding pedal (57) is composed of two anti-skid flat plates (32), and the two anti-skid flat plates (32) are connected by a hinge (33), and a hinge seat (34) for hingedly connecting the lower end of the second hollow tube (30) is fixedly provided on the top of one of the anti-skid flat plates (32). 5. A portable survey sampling device for Gobi soil according to claim 3, characterized in that the central rod (56) is composed of three solid rods (35) connected together, one ends of two adjacent solid rods (35) are plugged into each other and fixed by a second top screw (36), wherein the lower end of the solid rod (35) located at the bottom is provided with an external threaded portion (37), the external threaded portion (37) is threadedly matched with a lower positioning sleeve (27), a connecting disc (38) is further provided below the external threaded portion (37), a limiting sleeve (39) for covering the connecting disc (38) is provided at the top center of the soil-removing plate (10), the connecting disc (38) is axially connected to the limiting sleeve (39), the middle part of the second handle (12) is sleeved on the upper end of the uppermost solid rod (35), and the two are fixed by a third top screw (40). 6. A portable survey and sampling device for Gobi soil according to claim 1, characterized in that a flange sleeve (41) is sleeved on the lower end of the hollow rod body (1), and a plurality of support columns (42) are arranged between the flange sleeve (41) and the soil sample collector (2) and are evenly distributed in the circumferential direction, and the upper and lower ends of the support columns (42) are respectively inserted into the top of the flange sleeve (41) and the soil sample collector (2), and the upper end of the first vertical rod (13) is provided with a U-shaped seat (43) axially connected to the corresponding pin shaft (18), and the two ends of the tension spring (19) are respectively connected to the U-shaped seat (43) and the flange sleeve (41). 7. A portable survey sampling device for Gobi soil according to claim 1, characterized in that the soil sample collector (2) is composed of a tubular liner (44) and a tubular outer liner (45), the interlayer is formed between the outer wall of the tubular liner (44) and the inner wall of the tubular outer liner (45), a top cover (46) is fixedly provided at the upper end of the tubular liner (44) and the tubular outer liner (45), the outer edge bottom of the top cover (46) is formed with an annular portion (47) embedded downwardly in the interlayer, and the center of the top cover (46) is formed with a central rod for avoiding the central rod. The tubular outer liner (45) is provided with an annular beveled portion (49) on the inner wall of the lower end for contacting the outer side of the lower end of the anti-fall claw (7), the tubular inner liner (44) is provided with an annular flange (50) on the outer edge of the lower end, the bottom of the annular beveled portion (49) is provided with a sinking groove (51) for accommodating the annular flange (50), the depth of the sinking groove (51) is greater than the thickness of the annular flange (50), and the top inner edge of the soil breaking head (6) is provided with a threaded connection portion (52) for threadably cooperating with the inner wall of the sinking groove (51). 8. A portable survey sampling device for Gobi soil according to claim 2, characterized in that the width of the rectangular opening (9) is greater than the width of the anti-fall claw (7), and the lower end of each accommodating groove (21) is formed with two inserts (53) symmetrically distributed on the inner wall of the filling cylinder (20), and a connecting shaft (54) for the anti-fall claw (7) to be hinged is provided between the upper ends of the two inserts (53), and the two inserts (53) are respectively embedded in the gap between the anti-fall claw (7) and the rectangular opening (9). 9. A portable survey sampling device for Gobi soil according to claim 1, characterized in that spiral blades (55) are formed on the outer wall of the soil sample collector (2).