Soil layer sampling device for forestry

Abstract

The utility model discloses a soil layer sampling device for forestry, and relates to the technical field of soil sampling. The device comprises a soil layer sampling pipe and an auxiliary sampling hammer, the soil layer sampling pipe comprises a circular pipe body; an annular blade is arranged at the lower end of the circular tube body; channels which are axially symmetric are formed in the circular tube body from the lower end to the upper end; a hit ring is fixed to the outer wall of the upper end of the round pipe body, and the top of the channel is located below the hit ring. Internal threads in threaded connection with the auxiliary sampling hammer are arranged on the inner wall of the upper end of the circular tube body, and the upper end surface of the hit ring is higher than that of the circular tube body. According to the forestry soil sampling device, the soil layer sampling pipe, the auxiliary sampling hammer, the ground positioning seat and the soil unloading device are combined for use, so that a soil layer and fine tree roots can be accurately cut, the damage to a soil structure in the sampling process is avoided, and the scientificity and the accuracy of forestry soil sampling can be effectively improved through the application of the forestry soil sampling device; and an efficient and low-disturbance modern tool is provided for forestry management and environmental monitoring.

Description

Technical Field

[0001] The utility model belongs to the technical field of soil sampling, in particular to a soil layer sampling device for forestry. Background Art

[0002] Soil sampling is a basic and critical task in forestry management and ecological environment research. The analysis of soil samples can provide important information about soil fertility, moisture content, organic matter level, and pollutant concentration. However, traditional soil sampling methods often have some problems, which not only affect the sampling efficiency, but also may affect the quality and representativeness of the samples, and thus affect the accuracy and reliability of the research results.

[0003] First, traditional soil sampling relies on simple hand tools such as shovels and drills, which often make it difficult to ensure the integrity of the soil layer when sampling, especially in forest soils that contain a large number of root systems. Using these tools is not only labor-intensive, but also easy to destroy the soil structure, causing the collected samples to lose their original layer information, thus affecting subsequent data analysis and interpretation.

[0004] Secondly, traditional sampling methods also have difficulties in depth control and sample extraction. Due to the lack of accurate depth measurement and control mechanisms, operators often find it difficult to accurately reach the target sampling depth, or cross-contamination of samples or misreading of depth due to improper operation during sampling. In addition, samples are easily scattered or damaged when removed from the soil due to improper operation, further damaging the analytical value of the samples.

[0005] Furthermore, for research projects that require continuous monitoring of soil changes at the same location, the poor repeatability and large soil disturbance of traditional methods are particularly prominent. Frequent manual excavation and rough sampling techniques may cause long-term damage to soil structure, affecting the ecological function of the soil and the growth of vegetation, and also affecting the time series comparison of monitoring data.

[0006] In order to solve the above problems and improve the efficiency and quality of soil sampling, it is particularly important to develop a soil sampling device specifically for forestry use. Utility Model Content

[0007] The utility model aims to provide a soil layer sampling device for forestry, which can accurately perform soil layer sampling at a sampling position through the combined use of a soil layer sampling tube, an auxiliary sampling hammer, a ground positioning seat and a soil unloader.

[0008] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0009] The utility model relates to a soil layer sampling device for forestry, which comprises a soil layer sampling tube and an auxiliary sampling hammer; the soil layer sampling tube comprises a circular tube body; a ring blade is arranged at the lower end of the circular tube body; a symmetrically arranged channel is arranged on the circular tube body from the lower end to the upper end; a struck ring is fixed on the outer wall of the upper end of the circular tube body, and the top of the channel is located below the struck ring; an internal thread for threadedly connecting with the auxiliary sampling hammer is arranged on the inner wall of the upper end of the circular tube body, and the upper end surface of the struck ring is higher than the upper end surface of the circular tube body.

[0010] As a preferred technical solution of the utility model, annularly arranged tooth grooves are arranged at the lower end of the circular tube body.

[0011] As a preferred technical solution of the utility model, the auxiliary sampling hammer comprises a sliding rod and a heavy hammer matched with the sliding rod; an upper end plate and a lower end plate are respectively fixed at the upper and lower ends of the sliding rod; an external thread column for connecting with the internal thread is fixed on the lower surface of the lower end plate; a holding part is arranged on the circumferential side of the heavy hammer; the thickness of the lower end plate is less than the height difference between the upper end surface of the struck ring and the upper end surface of the circular tube body.

[0012] As a preferred technical solution of the utility model, scale marking lines and scales are engraved on the outer wall of the circular tube body from the lower end to the upper end.

[0013] As a preferred technical solution of the utility model, it further comprises a ground positioning seat; the ground positioning seat comprises a circular plate; a coaxial guiding circular tube is fixedly arranged through the circular plate; the inner diameter of the guiding circular tube is not less than the outer diameter of the circular tube body; extension plates are symmetrically fixed on the circumferential side of the circular plate.

[0014] As a preferred technical solution of the utility model, it further comprises a soil unloading device; the soil unloading device comprises a circular cake; the outer ring surface of the circular cake is a spherical surface, and the diameter of the spherical surface is not greater than the inner diameter of the circular tube body; the thickness of the circular cake is not greater than the width of the channel; two cylindrical rods are symmetrically fixed on the outer wall of the circular cake by bearings.

[0015] The utility model has the following beneficial effects:

[0016] 1. The utility model can sample the soil layer without other power equipment by combining the soil layer sampling tube and the auxiliary sampling hammer. By using the soil layer sampling tube with a ring blade and tooth groove design, the soil layer and small tree roots can be accurately cut, avoiding the damage to the soil structure during the sampling process.

[0017] 2. The auxiliary sampling hammer of the utility model is threadedly connected with the soil layer sampling tube, which simplifies the operation process and makes the assembly and disassembly of the sampling device fast and convenient. At the same time, the heavy hammer provided with a holding part is convenient for the operator to grasp and apply force, reducing the working intensity.

[0018] 3. Through the design of the channel, the utility model can easily discharge the soil sample while maintaining the soil structure. The channel not only helps to determine the actual depth of the collected soil layer, but also protects the structure of the soil sample when discharging the soil, thus providing high-quality samples for subsequent research.

[0019] 4. Through the design of the channel and the scale marking lines and scales engraved on the soil layer sampling tube, the user can accurately read the depth of the collected soil layer without using additional measuring tools. This design improves the convenience of on-site work and the accuracy of sampling data.

[0020] 5. The ground positioning seat set in the utility model can effectively prevent the soil layer sampling tube from tilting too much during the sampling process, and at the same time avoid disturbing the surrounding soil layer when pulling out the sampling tube. This ensures the stability of the soil layer around the sampling point and the representativeness of the sample.

[0021] 6. By using the soil discharger, the utility model can take out the core sample of the soil layer completely without damage. This step is particularly important for research that requires maintaining soil layers and structures, such as studies on soil microbial activities and soil organic matter stratification, providing good sample conditions.

[0022] 7. The device of the utility model is applicable to different forest and land conditions. Whether it is hard soil or land with more roots, it can effectively conduct soil sampling. Its durability and versatility make it an important tool in forestry research and soil investigation.

[0023] Of course, it is not necessary for any product implementing the utility model to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following will briefly introduce the drawings required for describing the embodiments. Obviously, the following drawings are only some embodiments of the utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 It is a schematic structural diagram of a soil layer sampling device for forestry of the utility model.

[0026] Figure 2 It is a schematic diagram of the implementation state of Embodiment 1.

[0027] Figure 3 It is a schematic structural diagram of the soil layer sampling tube.

[0028] Figure 4 For Figure 3 The partial enlarged schematic diagram at A in

[0029] Figure 5 It is a schematic structural diagram of an auxiliary sampling hammer.

[0030] Figure 6 It is a schematic structural diagram of a ground positioning seat.

[0031] Figure 7 It is a schematic structural diagram of the second embodiment.

[0032] Figure 8 It is a schematic structural diagram of a soil discharger.

[0033] In the drawings, the list of components represented by each reference numeral is as follows:

[0034] 1 - Soil layer sampling tube, 2 - Auxiliary sampling hammer, 3 - Ground positioning seat, 4 - Soil discharger, 11 - Circular tube body, 12 - Ring blade, 13 - Channel, 14 - Struck ring, 15 - Tooth groove, 21 - Slide bar, 22 - Weight, 23 - Upper end plate, 24 - Lower end plate, 25 - External threaded column, 26 - Holding part, 31 - Circular plate, 32 - Guide circular tube, 33 - Extension plate, 41 - Circular cake, 42 - Cylindrical rod. Specific embodiments

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Specific embodiment one:

[0037] Please refer to Figures 1-6 As shown, the present invention is a soil layer sampling device for forestry, including a soil layer sampling tube 1 and an auxiliary sampling hammer 2. The soil layer sampling tube 1 is used for the segmented collection of underground soil layers, and the auxiliary sampling hammer 2 is used to drive the soil layer sampling tube 1 into the soil and apply force during the process of taking the soil layer sampling tube 1 out of the soil layer upward.

[0038] The specific structure of the soil layer sampling tube 1 includes a circular tube body 11. A ring blade 12 is provided at the lower end of the circular tube body 11. The ring blade 12 is used for cutting soil layers and small tree roots.

[0039] The circular tube body 11 is provided with axially symmetrically arranged channels 13 from the lower end to the upper end. The channels 13 are provided to determine the actual depth of the soil layer collected inside the circular tube body 11. At the same time, when discharging the soil layer inside the circular tube body 11, it is convenient to apply force to the uppermost end of the soil inside the circular tube body 11, so that the soil can be taken out in a columnar shape, maintaining the structure of the soil at the corresponding depth. It provides an effective sample for the later study of the soil layer.

[0040] A striking ring 14 is fixed to the outer wall of the upper end of the circular tube body 11, and the top of the groove 13 is located below the striking ring 14. An internal thread for threadedly connecting with the auxiliary sampling hammer 2 is provided on the inner wall of the upper end of the circular tube body 11, and the upper end face of the striking ring 14 is higher than the upper end face of the circular tube body 11.

[0041] The auxiliary sampling hammer 2 includes a sliding rod 21 and a weight 22 that cooperates with the sliding rod 21. Upper and lower end plates 23 and 24 are respectively fixed to the upper and lower ends of the sliding rod 21. An external thread post 25 for connecting with the internal thread is fixed to the lower surface of the lower end plate 24. A gripping portion 26 is provided on the circumferential side of the weight 22. The thickness of the lower end plate 24 is less than the height difference between the upper end face of the striking ring 14 and the upper end face of the circular tube body 11, effectively preventing the weight 22 from impacting the lower end plate 24 and avoiding external force damage to the connection between the auxiliary sampling hammer 2 and the soil layer sampling tube 1. The provision of the striking ring 14 can extend the service life of the circular tube body 11.

[0042] During sampling, the external thread post 25 is threadedly connected with the internal thread, and the auxiliary sampling hammer 2 and the soil layer sampling tube 1 are connected as a whole. Hold the gripping portion 26 of the weight 22 with the hand and lift the weight 22 upward. Release the hand or apply a downward force to the weight 22 to strike the striking ring 14 at the upper end of the circular tube body 11, pressing the circular tube body 11 into the ground. Continuously lift the weight 22 to do work on the lower soil layer sampling tube 1, insert the circular tube body 11 into the soil. After reaching the sampling depth, lift the weight 22 to strike the upper end plate 23 above. After the frictional suction force of the formation on the circular tube body 11 decreases, the entire sampling device can be pulled out upward to complete the process of collecting the soil layer. Actually measure and obtain the actual sampling soil layer depth, the depth of installing the sampling sample. Take out the sample soil as a whole and place it in a sample storage tube with the same inner diameter as the circular tube body 11 according to the depth to effectively preserve the soil sample.

[0043] In order to quickly cut thicker roots, annularly arranged tooth grooves 15 are provided at the lower end of the circular tube body 11. Rotate the auxiliary sampling hammer 2 to drive the rotation of the soil layer sampling tube 1. During the rotation process, the circular blade 12 and the tooth grooves 15 alternately penetrate to cut the tree roots to achieve the purpose of quickly disconnecting the tree roots.

[0044] In order to read the depth of the collected soil layer without using a measuring scale, scale marking lines and scales are engraved on the outer wall of the circular tube body 11 from the lower end to the upper end.

[0045] In order to accurately locate the sampling point, prevent the soil sampling tube 1 from tilting too much during the sampling process, and prevent the surrounding soil layer from changing when the soil sampling tube 1 is pulled out of the soil layer, a ground positioning seat 3 is also provided. The ground positioning seat 3 includes a circular plate 31. A guiding circular tube 32 arranged coaxially is fixedly penetrated through the circular plate 31. The inner diameter of the guiding circular tube 32 is not less than the outer diameter of the tube body 11. Symmetrically fixed to the circumferential side surface of the circular plate 31 are extension plates 33. Before sampling, the guiding circular tube 32 is inserted into the soil layer at the sampling position to effectively guide the soil sampling tube 1, and the circular plate 31 and the extension plates 33 are attached to the upper side of the soil layer to effectively stabilize the soil layer around the sampling point. Specific Embodiment Two:

[0047] Based on Specific Embodiment One, the difference in this embodiment lies in:

[0048] As Figures 7-8 shown, it further includes a soil unloading device 4. The soil unloading device 4 includes a circular cake 41. The outer ring surface of the circular cake 41 is spherical, and the diameter of the spherical surface is not greater than the inner diameter of the tube body 11. The thickness of the circular cake 41 is not greater than the width of the groove 13. Symmetrically fixed to the outer wall of the circular cake 41 by bearings are two cylindrical rods 42.

[0049] After the soil sampling tube 1 is pulled out of the soil layer, take the soil unloading device 4, pass one of the cylindrical rods 42 through the two grooves 13, leave the circular cake 41 inside the tube body 11, rotate the cylindrical rod 42 until the circular cake 41 is in a coaxial state with the tube body 11, attach the circular cake 41 to the uppermost end of the soil sample inside the tube body 11, and simultaneously apply force to the cylindrical rods 42 on both sides outside the tube body 11 to press out the soil layer inside the tube body 11, and the intact and undamaged soil sample core cannot be taken out.

[0050] In the description of this specification, the description with reference to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0051] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not elaborate on all the details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. The present specification selects and specifically describes these embodiments to better explain the principle and practical application of the present invention, so that those skilled in the relevant technical field can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A soil sampling device for forestry, characterized in that: It comprises a soil layer sampling tube (1) and an auxiliary sampling hammer (2); The soil layer sampling tube (1) comprises a circular tube body (11); a ring blade (12) is arranged at the lower end of the circular tube body (11); a groove (13) is arranged axially symmetrically from the lower end to the upper end of the circular tube body (11); a striking ring (14) is fixed to the outer wall of the upper end of the circular tube body (11), and the top of the groove (13) is located below the striking ring (14); An inner wall at the upper end of the circular tube (11) is provided with an internal thread which is threadably connected to the auxiliary sampling hammer (2), and an upper end surface of the striking ring (14) is higher than an upper end surface of the circular tube (11).

2. A soil sampling device for forestry according to claim 1, characterized in that: The lower end of the circular tube (11) is provided with tooth grooves (15) arranged in an annular pattern.

3. A soil sampling device for forestry according to claim 1, characterized in that: The auxiliary sampling hammer (2) comprises a slide bar (21) and a weight (22) matched with the slide bar (21); an upper end plate (23) and a lower end plate (24) are fixed to the upper and lower ends of the slide bar (21) respectively; an external thread column (25) connected to the internal thread is fixed to the lower surface of the lower end plate (24); a gripping portion (26) is provided on the peripheral side of the weight (22); and the thickness of the lower end plate (24) is smaller than the height difference between the upper end surface of the impact ring (14) and the upper end surface of the circular tube (11).

4. A soil sampling device for forestry according to claim 1, characterized in that: The outer wall of the circular tube (11) is engraved with scale marking lines and scale marks from the bottom to the top.

5. A soil sampling device for forestry according to claim 1, characterized in that: It also comprises a ground positioning seat (3); the ground positioning seat (3) comprises a circular plate (31); a coaxially arranged guide circular tube (32) is fixedly penetrated through the circular plate (31); the inner diameter of the guide circular tube (32) is not less than the outer diameter of the circular tube body (11); and an extension plate (33) is axially symmetrically fixedly disposed on the circumferential side surface of the circular plate (31).

6. A soil sampling device for forestry according to claim 1, characterized in that: It also comprises a soil unloader (4); the soil unloader (4) comprises a round cake (41); the outer ring surface of the round cake (41) is a spherical surface, and the diameter of the spherical surface is not greater than the inner diameter of the circular tube (11); the thickness of the round cake (41) is not greater than the width of the groove (13); and two cylindrical rods (42) are symmetrically fixed to the outer wall bearing of the round cake (41).

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