Excavating tool suitable for surveying and sampling surface soil with high gravel content

Abstract

The utility model belongs to the technical field of soil geological survey equipment, and particularly relates to a digging tool suitable for surveying and sampling surface soil with high gravel content, which comprises a shovel handle and a shovel head, one side and / or two sides of the shovel head are / is provided with concave air guide grooves, and the concave air guide grooves can effectively reduce the contact area between the surface of the shovel head and the soil, so that the surface of the shovel head can be effectively protected. Soil hardening stripping is helped, so that a surface soil sampling surface is vertical and flat. The excavating tool overcomes the defects that an existing sampling tool is difficult to excavate surface soil with high gravel content, disturbance to the surface soil is large if the soil is excavated forcibly, and even the sampling tool is damaged, does not need to be assembled, is good in firmness, can realize simple, rapid and efficient excavation, can effectively reduce soil disturbance, and improves the working efficiency. For surface soil sampling and subsequent soil detection, acquisition of soil environment data is crucial, low cost is taken into account, and large-scale popularization is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of soil geological survey equipment, and in particular relates to a digging tool suitable for surveying and sampling surface soil with high gravel content, and is suitable for soil surveying and sampling in mountainous areas, hilly areas and the like. Background Art

[0002] Soil is one of the natural resources that humans depend on for survival, and it is also the material basis for the sustainable development of the economy and society. With the full launch of the third national soil census, soil survey sampling has entered the public eye. The purpose of the soil census is to identify soil types and distribution patterns. The soil census is an important method to find out the quantity and quality of soil resources. The census results can provide scientific support for the scientific classification, planned utilization, improvement and fertilization, protection and management of soil, and can also provide a decision-making basis for the formulation of major policies for economic, social and ecological construction.

[0003] However, for sampling of surface soil with a high gravel content, traditional sampling tools are difficult to dig, and forced digging will cause great disturbance to the surrounding soil, making it difficult to ensure the sampling quality. For example, a Chinese utility model patent with authorization announcement number CN205404170U and authorization announcement date 2016.07.27 discloses a surface soil sampling shovel, including a shovel handle and a shovel body, the top of the shovel handle is a gripping portion, and the bottom of the shovel handle is provided with a threaded connection sleeve; the top of the shovel body is provided with a threaded column adapted to the threaded connection sleeve, the shovel body is fixedly connected to the shovel handle through the threaded column and the threaded connection sleeve, and the bottom of the shovel body is arc-shaped or pointed; and foot pedals are also provided on both sides of the top of the shovel body. The surface soil sampling shovel can quickly collect surface soil samples through a simple fixed connection. However, due to the high gravel content of the surface soil in mountainous and hilly areas, the surface soil sampling shovel cannot be dug downward, and forced digging may disturb the surrounding soil or damage the soil sampling shovel.

[0004] Therefore, the existing surface soil sampling shovel cannot currently meet the needs of surface soil survey sampling with high gravel content. Summary of the invention

[0005] The technical problem to be solved by the utility model is to provide an excavation tool suitable for surveying and sampling surface soil with a high gravel content in view of the shortcomings of the prior art. The utility model overcomes the shortcomings of the prior sampling tools that are difficult to excavate and have high disturbance, does not require assembly, can achieve simple and efficient excavation, and can effectively reduce soil disturbance.

[0006] The present invention is realized by the following technical measures: an excavation tool suitable for surveying and sampling surface soil with high gravel content, comprising a shovel handle and a shovel head, wherein one side and / or both sides of the shovel head are provided with concave air guide grooves.

[0007] Preferably, the longitudinal cross-sectional area of the air guide groove accounts for 15-35% of the surface area of the shovel head on its corresponding side.

[0008] Preferably, two concave air guide grooves are respectively formed on both sides of the shovel head.

[0009] Preferably, the two concave air guide grooves on both sides of the shovel head are aligned.

[0010] Preferably, a tapered head is provided at one end of the shovel handle opposite to the shovel head.

[0011] Preferably, 40 cm depth scale lines are provided on the shovel handle.

[0012] Preferably, 20 cm depth scale lines are provided on both sides of the shovel head.

[0013] Preferably, the shovel head has a length of 30 cm, a width of 8 cm, and a thickness of 2 cm.

[0014] Preferably, the shovel handle is a steel shovel handle with spiral patterns, chevron patterns or crescent patterns, and the shovel head is a steel shovel head.

[0015] Preferably, the shovel head and the shovel handle are integrally cast or non-detachably fixedly connected.

[0016] Advantages of the present utility model:

[0017] The present utility model overcomes the defects of existing sampling tools, such as difficult excavation of surface soil with high gravel content, large disturbance to surface soil and even damage to sampling tools if forced excavation is carried out. The excavation tool of the present utility model does not need to be assembled, has good reliability, can realize simple, fast and efficient excavation, can effectively reduce soil disturbance, is crucial for surface soil sampling and subsequent soil detection and obtaining soil environmental data, and also takes into account low cost and is convenient for large-scale popularization. It can be seen that the present utility model has substantial features and progress compared with the prior art, and the beneficial effects of its implementation are also obvious. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the front view structural schematic diagram of the specific embodiment of the present utility model.

[0019] Figure 2 It is the partial structural schematic diagram of the specific embodiment of the present utility model.

[0020] Figure 3 It is the bottom view structural schematic diagram of the specific embodiment of the present utility model.

[0021] In the figure, 1 - tapered head, 2 - shovel handle, 3 - 40 cm depth scale line, 4 - shovel head, 5 - 20 cm depth scale line, 6 - air guide groove. Detailed implementation manners

[0022] To clearly illustrate the technical features of this solution, the following will elaborate on this solution through specific implementation manners and in conjunction with its attached drawings.

[0023] An excavation tool applicable to the investigation and sampling of surface soil with a high gravel content, which includes a shovel handle 2 and a shovel head 4. Preferably, the length of the shovel head 4 is 30 cm, the width is 8 cm, and the thickness is 2 cm. A 40-cm depth scale line 3 is provided on the shovel handle 2, and 20-cm depth scale lines 5 are provided on both sides of the shovel head 4 to meet the current requirements for soil census sampling, which requires a sampling depth of 40 cm for garden plots and 20 cm for cultivated forest grasslands.

[0024] One side and / or both sides of the shovel head 4 are provided with concave air guide grooves 6. Preferably, two concave air guide grooves 6 are respectively provided on both sides of the shovel head 4, and the positions of the two concave air guide grooves 6 on both sides of the shovel head are aligned. The longitudinal cross-sectional area of the air guide groove 6 accounts for 15 - 35% of the surface area of the shovel head 4 on its corresponding side. Preferably, the longitudinal cross-sectional area of the air guide groove 6 accounts for 20% of the surface area of the shovel head 4 on its corresponding side. The concave air guide grooves 6 can effectively reduce the contact area between the surface of the shovel head 4 and the soil, and help to peel off the soil crust to ensure that the sampling surface of the surface soil is vertical and flat.

[0025] A tapered head 1 is provided at one end of the shovel handle 2 opposite to the shovel head 4, and the tapered head 1 can be used to break or pry up larger and firm gravel.

[0026] The shovel head 4 is a steel shovel head. The length of the shovel handle 2 can be processed and adjusted according to the different heights of users. Preferably, the length of the shovel handle 2 is 130 cm. The shovel handle 2 is a steel shovel handle with spiral patterns, herringbone patterns or crescent patterns. Of course, the pattern form can also be changed according to needs, as long as it can enhance the frictional force of holding and the compressive and anti-bending abilities.

[0027] The shovel head 4 and the shovel handle 2 are integrally cast or non-detachably fixedly connected (such as welded) to ensure the strength and compressive and anti-bending abilities of the excavation tool.

[0028] After selecting the position to be sampled, hold the shovel handle 2 with both hands and keep the shovel head 4 downward. Lift it vertically upward until the shovel head 4 is about 30 cm above the ground. Relying on the gravity of the excavation tool itself, exert force vertically downward to make the shovel head 4 penetrate into the soil. Shake it slowly and lift it upward. Ordinary gravel will be broken by the shovel head 4. If encountering surface soil with larger gravel particles, the tapered head 1 can be used for auxiliary excavation. The tapered head 1 can be used to break or pry up larger and firm gravel. Repeat this action until the sampling depth is met. During this process, keep the sampling surface as vertical and smooth as possible to meet the sampling requirements.

[0029] The technical features not described in this utility model can be realized by the prior art and will not be elaborated here. This utility model is not limited to the above specific embodiments, and the changes, modifications, additions or substitutions made by those of ordinary skill in the art within the essence of this utility model should also fall within the protection scope of this utility model.

Claims

1. An excavation tool suitable for surveying and sampling surface soil with high gravel content, comprising a shovel handle and a shovel head, characterized in that: One side and / or both sides of the shovel head are provided with a concave air guide groove.

2. The excavation tool suitable for surveying and sampling surface soil with high gravel content according to claim 1 is characterized by: The longitudinal cross-sectional area of ​​the air guide groove accounts for 15-35% of the surface area of ​​the shovel head on the side where the air guide groove is located.

3. The excavation tool suitable for surveying and sampling surface soil with high gravel content according to claim 1 or 2, characterized in that: Two concave air guide grooves are respectively arranged on both sides of the shovel head.

4. The excavation tool suitable for surveying and sampling surface soil with high gravel content according to claim 3 is characterized by: The two inwardly concave air guide grooves on both sides of the shovel head are aligned.

5. The excavation tool suitable for surveying and sampling surface soil with high gravel content according to claim 4, characterized in that: A cone head is arranged at one end of the shovel handle opposite to the shovel head.

6. The excavation tool suitable for surveying and sampling surface soil with high gravel content according to claim 5, characterized in that: A 40 cm depth mark is provided on the shovel handle.

7. The excavation tool suitable for surveying and sampling surface soil with high gravel content according to claim 6, characterized in that: Both sides of the shovel head are provided with 20 cm depth scale lines.

8. The excavation tool suitable for surveying and sampling surface soil with high gravel content according to claim 7, characterized in that: The shovel head has a length of 30 cm, a width of 8 cm and a thickness of 2 cm.

9. The excavation tool suitable for surveying and sampling surface soil with high gravel content according to claim 8, characterized in that: The shovel handle is a steel shovel handle with a spiral pattern, a herringbone pattern or a crescent pattern, and the shovel head is a steel shovel head.

10. The excavation tool suitable for surveying and sampling surface soil with high gravel content according to claim 9, characterized in that: The shovel head and the shovel handle are integrally cast or non-detachably fixedly connected.

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