Portable deep soil stratified sampling equipment

Abstract

The invention discloses portable deep soil stratified sampling equipment, and relates to the technical field of soil sampling equipment.The portable deep soil stratified sampling equipment comprises a bottom plate, a through hole is formed in the bottom plate and used for allowing a sampling sleeve to pass through, the upper end of the sampling sleeve is rotationally connected into a lifting plate, and the lifting plate is arranged at the free end of a second lifting rod; the second lifting rod is fixedly connected to the supporting frame, and the supporting frame is fixedly connected to the bottom plate. A first lifting rod is further arranged on the supporting frame, an auger motor is arranged at the free end of the first lifting rod, a positioning auger is arranged at the output end of the auger motor, and the positioning auger is matched with the sampling sleeve. Through the arrangement, the deep soil sampling equipment which is compact in structure, high in portability and good in layering effect is provided, the transportation and operation requirements of complex terrains can be met, accurate layering sampling of deep soil can be achieved through a stable positioning and guiding structure and an efficient power transmission mechanism, the operation intensity is reduced, and the sampling efficiency is improved. The sampling efficiency and the sample quality are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of soil sampling equipment, in particular to a portable deep soil layered sampling equipment. BACKGROUND

[0002] In the fields of soil environment monitoring, agricultural production investigation, geological exploration, etc., soil sampling is a key link to obtain data of soil physicochemical properties, pollutant distribution, etc., especially the layered sampling of deep soil, which directly affects the accuracy and scientificity of the detection results. Deep soil sampling needs to break through the interference of surface soil, penetrate to a specific depth underground, and achieve the layered collection of different depth soil layers, avoiding sample mixing, thus strict requirements are put forward for the structural design and use performance of the sampling equipment.

[0003] The existing deep soil sampling equipment is mainly divided into two categories: large mechanical sampling equipment and small manual sampling equipment. The large mechanical sampling equipment usually relies on vehicles or fixed racks, is equipped with high-power driving devices and drilling tools, and has high sampling efficiency and deep depth, but has problems of large size, heavy weight, inconvenient transportation, etc., is difficult to adapt to the sampling needs of complex terrains such as fields and mountains, and has high equipment cost and complex operation process, which needs professional personnel to operate, and is not suitable for small-scale investigation or on-site rapid sampling scenarios.

[0004] The small manual sampling equipment (such as screw drill type and sleeve type sampler) has portability, but has obvious defects: first, the sampling depth is limited, and usually only shallow soil sampling can be met, and it is difficult to penetrate deep soil more than 20 cm underground; second, the layered sampling effect is poor, and soil layer collapse and sample mixing are easy to occur during manual operation, and different depth soil samples cannot be accurately distinguished; third, the operation intensity is large, manual pressure and rotating force need to be applied during deep sampling, the labor efficiency is low, and the equipment is easy to deviate during sampling, resulting in inaccurate sampling position.

[0005] Therefore, the present application proposes a deep soil sampling equipment with compact structure, strong portability and good layered effect, which can not only meet the transportation and operation needs of complex terrains, but also realize accurate layered sampling of deep soil through stable positioning and guiding structure and efficient power transmission mechanism, reduce the operation intensity, and improve the sampling efficiency and sample quality. SUMMARY

[0006] The present application aims to solve the defects in the prior art and proposes a portable deep soil layered sampling equipment.

[0007] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions: A portable deep soil layered sampling device, comprising a bottom plate, a through hole is formed on the bottom plate, the through hole is used for the passing of a sampling sleeve, the upper end of the sampling sleeve is rotationally connected in a lifting plate, the lifting plate is arranged on the free end of a second lifting rod, the second lifting rod is fixedly connected on a support frame, and the support frame is fixedly connected on the bottom plate; A first lifting rod is further arranged on the support frame, the free end of the first lifting rod is provided with an auger motor, a positioning auger is arranged at the output end of the auger motor, and the positioning auger is matched with the sampling sleeve.

[0008] Further, the bottom plate comprises a fixed plate and a hinged plate, the through hole is arranged on the fixed plate, the lower end surface of the fixed plate is provided with a positioning spike, the hinged plate is arranged symmetrically on both sides of the fixed plate, a clamping plate is fixedly connected on the hinged plate, and the clamping plate is detachably arranged on the support frame or the second lifting rod.

[0009] Further, the upper end of the sampling sleeve is provided with an outer edge, the outer edge is rotationally connected in the inner cavity of the lifting plate, the outer edge is in transmission connection with a driving wheel, the driving wheel is arranged at the output end of a driving motor, the driving motor is fixedly connected on the lifting plate, and the outer wall of the sampling sleeve is provided with an expanded bulge.

[0010] Further, a ball groove is formed on the outer edge, a ball is embedded in the ball groove, the ball is in abutment with the end wall of the inner cavity, the edge of the outer edge is provided with external teeth, and the driving wheel is in meshing with the external teeth.

[0011] Further, the second lifting rod is arranged in two groups and symmetrically arranged on both sides of the sampling sleeve, and the top of the second lifting rod is fixedly connected on the support frame.

[0012] Further, the spiral blade of the positioning auger is provided with a crushing tooth, the crushing tooth is uniformly distributed along the edge of the spiral blade, the lower end of the positioning auger is provided with a pointed conical guide head, the outer wall of the guide head is provided with a wear-resistant coating, and the length of the positioning auger is greater than the length of the sampling sleeve.

[0013] Beneficial effects

[0014] Compared with the prior art, the beneficial effects of the present application are that: The whole device is based on the bottom plate as a carrier, the support frame, the first lifting rod and the second lifting rod form a compact integrated structure with the bottom plate, there is no redundant large rack or external power component, compared with the traditional large mechanical sampling device, the volume is smaller, the weight is lighter, it is convenient to transport to the complex terrain such as field and mountain, and the use demand of small-scale investigation or on-site rapid sampling scene is met. At the same time, the second lifting rod drives the lifting plate to move downward, and the auxiliary guide of the positioning auger is matched, so that the depth limitation of the manual sampling device is broken through. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate the present application together with the embodiments thereof, and explain the present application, and do not constitute a limitation on the present application.

[0016] Figure 1 、 2 It is the overall structure schematic diagram of the portable deep soil layered sampling device.

[0017] Figure 3 It is the structure schematic diagram of the portable deep soil layered sampling device after folding.

[0018] In the figure: 1, the first lifting rod; 2, the second lifting rod; 3, the driving motor; 4, the lifting plate; 5, the sampling sleeve; 6, the support frame; 7, the fixed plate; 8, the hinged plate; 9, the clamping plate; 10, the positioning auger. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments.

[0020] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0021] REFERENCE Figure 1 - Figure 3 A portable deep soil layered sampling device, comprising a bottom plate, a through hole is formed in the bottom plate, the through hole is used for the passing of a sampling sleeve 5, the upper end of the sampling sleeve 5 is rotatably connected in a lifting plate 4, the lifting plate 4 is arranged at the free end of a second lifting rod 2, the second lifting rod 2 is fixedly connected to a support frame 6, and the support frame 6 is fixedly connected to the bottom plate; The support frame 6 is further provided with a first lifting rod 1, and a free end of the first lifting rod 1 is provided with an auger motor, and an output end of the auger motor is provided with a positioning auger 10 matched with the sampling sleeve 5.

[0022] The device takes the bottom plate as a basic carrier, and the support frame 6, the first lifting rod 1 and the second lifting rod 2 form a compact integrated structure with the bottom plate, without redundant large racks or external power components, so that the device is smaller and lighter than a traditional large-scale mechanical sampling device, and is convenient to transport to complex terrains such as fields and mountains, and meets the needs of small-scale research or on-site rapid sampling.

[0023] In use, first, the device is carried to a target sampling area, the position of the bottom plate is adjusted to align the through hole with the sampling point, the bottom plate is ensured to be flatly attached to the ground, the bottom plate and the support frame 6 form a stable reference to prevent the device from deviating, and the sampling sleeve 5 is first vertically inserted into the soil through the through hole of the bottom plate; the descent driving program of the second lifting rod 2 is started, the second lifting rod 2 drives the lifting plate 4 at the free end to synchronously descend, since the upper end of the sampling sleeve 5 is rotationally connected in the lifting plate 4, the lifting plate 4 drives the sampling sleeve 5 to vertically move downward along the through hole on the bottom plate, and gradually drills into the soil. After the sampling sleeve 5 is stably inserted into the soil (can be completely inserted or gradually inserted in multiple times), the descent program of the first lifting rod 1 is started, the first lifting rod 1 drives the auger motor and the positioning auger 10 at the free end to synchronously descend, so that the positioning auger 10 slowly enters the soil along the inner cavity of the sampling sleeve 5 (when the sampling sleeve 5 gradually enters, the positioning auger 10 descends in multiple times along with the sampling sleeve 5), the rotating positioning auger 10 can break the hard soil blocks remaining in the sampling sleeve 5 on one hand, and reduce the resistance of the subsequent sleeve to continue to penetrate on the other hand; on the other hand, the positioning auger 10 can transport the surface soil and the debris on the surface of the soil upward through the spiral blades, so as to avoid the accumulation of the debris to affect the purity of the layered sample. After the sampling sleeve 5 and the positioning auger 10 are completely inserted, the first lifting rod 1 and the second lifting rod 2 are retracted, and the soil in the sampling sleeve 5 is completely taken out through the action of the positioning auger 10.

[0024] In other preferred embodiments, the bottom plate includes a fixed plate 7 and a hinged plate 8, the through hole is arranged on the fixed plate 7, a lower end surface of the fixed plate 7 is provided with a positioning spike, the hinged plate 8 is symmetrically arranged on two sides of the fixed plate 7, and a clamping plate 9 is fixedly connected to the hinged plate 8 and detachably arranged on the support frame 6 or the second lifting rod 2.

[0025] The fixed plate 7 is used as a bottom plate core bearing part, and the positioning spike arranged on the lower end face can be inserted into the surface soil through pressing or self-weight after the device is placed at the sampling point, thereby forming multi-point fixed support and effectively preventing the device from deviating or tilting due to vibration or soil resistance during the operation of the sampling sleeve 5 into the soil and the positioning auger 10.

[0026] In other preferred embodiments, the upper end of the sampling sleeve 5 is provided with an outer edge, which is rotationally connected in the inner cavity of the lifting plate 4 and is in transmission connection with a driving wheel arranged on the output end of a driving motor 3 fixedly connected to the lifting plate 4. The outer wall of the sampling sleeve 5 is provided with a flared protrusion.

[0027] The design that the outer edge is rotationally connected in the inner cavity of the lifting plate 4 provides stable rotary support for the sampling sleeve 5. After the driving motor 3 is started, power can be quickly transmitted to the outer edge through the driving wheel to drive the sampling sleeve 5 to stably rotate or reciprocate around its own axis. Compared with the sampling sleeve 5 without power driving, the sleeve in this state can cut soil through its rotation, greatly reducing the soil resistance, especially in clay, loam and other dense soil, the soil entering speed is obviously improved.

[0028] Specifically, a ball groove is formed on the outer edge, a ball is embedded in the ball groove, the ball abuts against the end wall of the inner cavity, the edge of the outer edge is provided with external teeth, and the driving wheel is in meshing connection with the external teeth. The ball groove on the outer edge is embedded with the ball and abuts against the end wall of the inner cavity of the lifting plate 4, thereby forming a rolling friction structure. Compared with the design that the traditional outer edge directly slides in contact with the end wall of the inner cavity, the friction coefficient of the rolling friction is greatly reduced, which can reduce the friction loss of the outer edge during rotation.

[0029] In other preferred embodiments, the second lifting rod 2 is provided with two groups, which are symmetrically arranged on the two sides of the sampling sleeve 5. The free ends of the two groups of second lifting rods 2 are fixedly connected to the two ends of the lifting plate 4, and the two groups of second lifting rods 2 are electrically connected through a synchronous control module to realize synchronous lifting action. The two groups of second lifting rods 2 are symmetrically distributed on the two sides of the sampling sleeve 5 and are synchronously connected to the two ends of the lifting plate 4. Compared with single lifting rod driving, the stress of the lifting plate 4 can be dispersed to the two sides to avoid tilting or deformation of the lifting plate 4 due to unilateral stress. During the sampling sleeve 5 into the soil and the lifting process, the two groups of lifting rods synchronously apply driving force, which can ensure that the lifting plate 4 always maintains a horizontal state, thereby driving the sampling sleeve 5 to stably lift along the vertical direction.

[0030] In other preferred embodiments, the positioning auger 10 is provided with breaking teeth evenly distributed along the edges of the helical blades, the lower end of the positioning auger 10 is provided with a pointed guide head, the outer wall of the guide head is provided with a wear-resistant coating, and the length of the positioning auger 10 is greater than the length of the sampling sleeve 5. The wear-resistant coating (such as tungsten carbide coating, ceramic coating, etc.) on the outer wall of the guide head can significantly improve the hardness and wear resistance of the guide head, effectively resist the friction and impact of gravel and hard blocks in deep soil, and avoid wear and deformation of the guide head due to long-term use.

[0031] The above description is only the preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can make equivalent replacements or changes within the technical range disclosed by the present application according to the technical solutions and inventive concepts of the present application, which should be covered within the protection scope of the present application.

Claims

1. A portable deep soil stratification sampling device, characterized in that, The system includes a base plate with a through hole for a sampling sleeve to pass through. The upper end of the sampling sleeve is rotatably connected to a lifting plate. The lifting plate is located at the free end of a second lifting rod, which is fixedly connected to a support frame. The support frame is fixedly connected to the base plate. The support frame is also equipped with a first lifting rod, and the free end of the first lifting rod is equipped with an auger motor. The output end of the auger motor is equipped with a positioning auger, and the positioning auger is adapted to the sampling sleeve.

2. The portable deep soil stratification sampling device according to claim 1, characterized in that, The base plate includes a fixed plate and a hinge plate. The through hole is provided on the fixed plate. The lower end face of the fixed plate is provided with a positioning spike. There are two sets of hinge plates, which are symmetrically arranged on both sides of the fixed plate. A snap-fit ​​plate is fixedly connected to the hinge plate. The snap-fit ​​plate is detachably mounted on the support frame or the second lifting rod.

3. The portable deep soil stratification sampling device according to claim 1, characterized in that, The upper end of the sampling sleeve is provided with an outer edge, which is rotatably connected to the inner cavity of the lifting plate. The outer edge is connected to the drive wheel, which is located at the output end of the drive motor. The drive motor is fixedly connected to the lifting plate. The outer wall of the sampling sleeve is provided with a flared protrusion.

4. The portable deep soil stratification sampling device according to claim 3, characterized in that, A ball groove is provided on the outer edge, and a ball is embedded in the ball groove. The ball abuts against the end wall of the inner cavity. External teeth are provided on the edge of the outer edge, and the drive wheel meshes with the external teeth.

5. A portable deep soil stratification sampling device according to claim 1, characterized in that, The second lifting rod is provided in two sets, symmetrically arranged on both sides of the sampling sleeve, and the top of the second lifting rod is fixedly connected to the support frame.

6. A portable deep soil stratification sampling device according to claim 1, characterized in that, The positioning auger has crushing teeth on its spiral blades, which are evenly distributed along the edge of the spiral blades. The lower end of the positioning auger is provided with a pointed cone-shaped guide head, and the outer wall of the guide head is provided with a wear-resistant coating. The length of the positioning auger is greater than the length of the sampling sleeve.

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