Forest shallow soil sampling device
By designing a forest shallow soil sampling device driven by an impact head and a counterweight, and utilizing impulse to convert shear force, the problem of difficult sampling in hard soil was solved, and efficient and accurate soil collection was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2026-03-31
AI Technical Summary
Existing shallow forest soil sampling devices have difficulty effectively reaching the designated depth in hard or gravelly soils, resulting in low sampling accuracy and efficiency.
A forest shallow soil sampling device was designed, which adopts a combination structure of impact head, connecting rod, counterweight and sampling tube. The impulse of the counterweight is converted into the shear force of the sampling tube to assist the sampler in entering the soil. The soil sample is easily removed through the detachable sampling tube structure.
It enables easy sampling in hard soil layers, improves sampling accuracy and efficiency, enhances the shear force on the soil layer, and facilitates soil sample extraction.
Smart Images
Figure CN224066365U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of soil sampling technology, and in particular to a shallow forest soil sampling device. Background Technology
[0002] A shallow soil sampling device is a tool used to collect soil samples from the surface to a relatively shallow depth. The term "shallow" does not usually have a strict depth definition, but generally refers to the soil layer from the surface to a depth of several meters, such as 0-2 meters in some cases. Its purpose is to obtain samples relatively close to the surface soil layer for use in many fields such as soil composition analysis, preliminary stages of geological exploration, and environmental monitoring.
[0003] Existing technology discloses a shallow soil sampling device for geological exploration, including a sampler, a rotating rod, and a fixed column. The sampler is fixedly installed at the lower part of the rotating rod, and the sampler and the rotating rod are connected and fixed by the fixed column. The sampler is a hollow cylindrical structure, and a scraper for collecting soil is movably installed on the outer side of the sampler. One outer surface of the scraper is arc-shaped. An arc-shaped draw plate is movably installed on the inner side of the sampler. The outer side of the sampler has an inlet for use with the arc-shaped draw plate. A limiting slide plate for limiting the soil sampling depth is movably installed on the outer side of the fixed column. This improves the soil sampling effect, avoids mixing soil from other depths during the sampling process, and provides an auxiliary limiting structure to improve the soil sampling accuracy, allowing it to accurately reach the corresponding depth.
[0004] When the surface soil is hard or contains a lot of gravel, the sampler faces greater resistance when entering the soil, and it is difficult to push the sampler to a specific depth by hand.
[0005] Therefore, it is necessary to provide a forest shallow soil sampling device to solve the above-mentioned technical problems. Utility Model Content
[0006] In view of the above situation and to overcome the defects of the existing technology, this utility model provides a forest shallow soil sampling device that can assist manual pushing of the sampler into the soil.
[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0008] A forest shallow soil sampling device includes: an impact head, a connecting rod at the upper end of the impact head, a tail rod at the upper end of the connecting rod, a sleeve at the lower end of the impact head, a sampling tube inside the sleeve, the sampling tube being open at both ends, the length of the sampling tube being greater than that of the sleeve, a counterweight being slidably mounted on the connecting rod, and a handle being fixedly mounted on the side wall of the counterweight.
[0009] Preferably, the sampling tube consists of two symmetrical parts.
[0010] Preferably, an extension rod is provided between the connecting rod and the tail rod, the upper end of the extension rod being threadedly connected to the tail rod, and the lower end of the extension rod being threadedly connected to the connecting rod.
[0011] Preferably, the sampling tube has a blade at its lower end.
[0012] Preferably, the connecting rod is threadedly connected to the impact head.
[0013] Preferably, an additional weight block is threaded onto the counterweight block.
[0014] Compared with the prior art, the present invention has the following beneficial effects:
[0015] (1) This utility model achieves the effect of the sampling tube entering the hard soil layer by setting counterweight and other related components. Compared with the existing method of sampling directly by manpower, this device makes the sampling tube obtain a larger soil shear force by converting impulse, making it easier to sample on hard soil. At the same time, it can also control the depth of the sampling tube entering the soil more flexibly and sample accurately.
[0016] (2) This utility model divides the sampling tube into two parts, left and right. After sampling, the sampling tube is broken open and the pattern is exposed, which makes it convenient for staff to take out soil samples.
[0017] (3) By setting an extension rod, the stroke of the counterweight is increased. The higher the initial position of the counterweight, the greater its speed when it falls on the impact head, and the greater the shear force of the sampling cylinder on the soil layer. Attached Figure Description
[0018] Figure 1 A schematic diagram of the forest shallow soil sampling device provided by this utility model;
[0019] Figure 2 Cross-sectional view of the impact head, sampling cylinder and casing of the forest shallow soil sampling device provided by this utility model;
[0020] Figure 3 An exploded view of the forest shallow soil sampling device provided by this utility model.
[0021] The corresponding names of the reference numerals in the attached drawings are as follows: 101, impact head; 102, connecting rod; 103, tail rod; 104, handle; 105, sleeve; 106, sampling cylinder; 107, extension rod; 108, counterweight; 109, blade; 110, weight-adding block. Detailed Implementation
[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments. The embodiments of the present invention include, but are not limited to, the following embodiments.
[0023] First embodiment:
[0024] like Figure 1-3 As shown, the forest shallow soil sampling device provided by this utility model includes: an impact head 101, which is cylindrical; a connecting rod 102 at the upper end of the impact head 101, which is a smooth round rod; a tail rod 103 at the upper end of the connecting rod 102, which has the same shape as the connecting rod 102; a sleeve 105 at the lower end of the impact head 101, which is open at the lower end and has a hollow interior; and a sampling cylinder 106 inside the sleeve 105. 6 is a device for penetrating deep into the soil and extracting soil samples. The outer diameter of the sampling cylinder 106 is the same as the inner diameter of the sleeve 105. The sampling cylinder 106 is fitted inside the sleeve 105. The sampling cylinder 106 is open at both ends and its length is greater than that of the sleeve 105. A counterweight 108 is slidably installed on the connecting rod 102. A circular through hole is provided in the middle of the counterweight 108, and the connecting rod 102 passes through the circular through hole. A handle 104 is fixedly installed on the side wall of the counterweight 108. In use, the sampling cylinder 106 is first inserted into the sleeve 105. In the process, the sampling cylinder 106 is brought into contact with the soil layer at the point to be measured. Then, the worker holds the handle 104 and lifts the counterweight 108 upwards along the connecting rod 102 to the middle of the tail rod 103. Finally, the handle 104 is pushed downwards, and the counterweight 108 accelerates downwards until it contacts the impact head 101 and collides. During this process, the impulse of the counterweight 108 accelerating downwards is transferred to the sampling cylinder 106 when the impact head 101 contacts it. A large amount of friction is generated between the sampling cylinder 106 and the ground. The shear force is similar to the principle of a stone falling from a height and creating a small crater in the ground. After repeated operation, the sampling cylinder 106 and the sleeve 105 gradually enter the soil under the action of the counterweight 108. After reaching the designated depth, the connecting rod 102 is lifted upwards, and the connecting rod 102 drives the sleeve 105 to move upwards. Finally, the sampling cylinder 106 is pulled out of the soil, and the soil in the sampling cylinder 106 is taken out of the soil layer along with the sampling cylinder 106, thus completing the sampling.
[0025] By setting up counterweights 108 and other related components, the sampling cylinder 106 can enter the hard soil layer. Compared with the existing method of sampling directly by manpower, this device uses impulse conversion to enable the sampling cylinder 106 to obtain a larger soil shear force, making it easier to sample in hard soil. At the same time, it can also flexibly control the depth of the sampling cylinder 106 into the soil for accurate sampling.
[0026] Second embodiment:
[0027] like Figure 2As shown, the sampling tube 106 is a cylindrical structure, and it is divided into two parts, left and right, from the middle. After sampling, the soil is located in the hollow part of the sampling tube 106.
[0028] By dividing the sampling tube 106 into two parts, the pattern is exposed after the sampling is completed, making it easier for staff to take out the soil sample.
[0029] Third embodiment:
[0030] like Figure 1 , Figure 3 As shown, an extension rod 107 is provided between the connecting rod 102 and the tail rod 103. The upper end of the extension rod 107 is threadedly connected to the tail rod 103, and the lower end of the extension rod 107 is threadedly connected to the connecting rod 102.
[0031] By setting the extension rod 107 to increase the stroke of the counterweight 108, the higher the initial position of the counterweight 108, the greater its speed when it falls on the impact head 101, and the greater the shear force of the sampling cylinder 106 on the soil layer.
[0032] Fourth embodiment:
[0033] like Figure 2 As shown, the sampling tube 106 has a blade 109 at the lower end. The tube wall of the sampling tube 106 with the blade 109 is thinner and the contact area with the soil layer is smaller. Under the same pressure, the thinner blade 109 can exert greater pressure on the soil layer and the shearing effect on the soil layer is more obvious. This is the same principle as using a sharper kitchen knife to cut vegetables, which saves more effort.
[0034] Fifth embodiment:
[0035] like Figure 3 As shown, the connecting rod 102 is threadedly connected to the impact head 101. The impact head 101 can be detached from the connecting rod 102, the extension rod 107 can be detached from the connecting rod 102, and the tail rod 103 can be detached from the extension rod 107. At the same time, the counterweight 108 can also be removed from the connecting rod 102. That is to say, the device can be disassembled into parts, which are more portable than the whole. It is assembled on site during use. The counterweight 110 is threadedly installed on the counterweight 108. Both are made of iron. The counterweight 110 has the same structure as the counterweight 108 and has a circular through hole in the middle. During use, it is screwed onto the counterweight 108 to increase the weight, thereby making the counterweight 108 generate a greater impact force on the impact head 101, and the cutting effect on hard soil layers is more obvious.
[0036] Working principle: First, the sampling tube 106 is inserted into the sleeve 105 and the sampling tube 106 is brought into contact with the soil layer at the point to be measured. Then, the operator holds the handle 104 and lifts the counterweight 108 up along the connecting rod 102 to the middle of the tail rod 103. Finally, the operator pushes the handle 104 downward with force, and the counterweight 108 accelerates downward until it contacts the impact head 101 and collides. During this process, the impulse of the counterweight 108 accelerating downward is transferred to the sampling tube 106 when it contacts the impact head 101. A large shear force is generated between the sampling tube 106 and the ground. This process is similar to the principle of a stone falling from a height and making a small pit in the ground. After repeated operation, the sampling tube 106 and the sleeve 105 gradually enter the soil under the action of the counterweight 108.
[0037] The above embodiments are merely one of the preferred embodiments of this utility model and should not be used to limit the scope of protection of this utility model. Any modifications or refinements made to the main design concept and spirit of this utility model that are not of substantial significance, but solve the same technical problem as this utility model, should be included within the scope of protection of this utility model.
Claims
1. A forest shallow soil sampling device, characterized by, The utility model relates to a sampling device for soil and rock, which comprises: The utility model relates to a sampling device for soil and rock, which comprises:
2. The forest soil-sampling device according to claim 1, characterized in that, The utility model relates to a sampling device for soil and rock, which comprises:
3. The forest soil-sampling device of claim 1, wherein The utility model relates to a sampling device for soil and rock, which comprises:
4. The forest soil-sampling device of claim 2, wherein The utility model relates to a sampling device for soil and rock, which comprises:
5. The forest soil-sampling device of claim 3, wherein The utility model relates to a sampling device for soil and rock, which comprises:
6. The forest soil-sampling device of claim 3, wherein,