A geological exploration sampling device

Abstract

The utility model discloses a geological exploration sampling device belongs to exploration sampling equipment technical field, including hand rotary lever, sampling cylinder and fixed frame, and the fixed frame is equipped with a plurality of support legs and is surrounded in the periphery of hand rotary lever, and the top of support leg is equipped with the supporting plate, and the bottom of support leg is equipped with the locating plate, and the locating plate is equipped with the ground nail, and the supporting plate is along the vertical and is equipped with the threaded sleeve, and the hand rotary lever is equipped with the threaded section of screw thread connection with the threaded sleeve, and the sampling cylinder is equipped with the anti -rotation mechanism with hand rotary lever, and the anti -rotation mechanism includes L shape anti -rotation lever, and the anti -rotation lever is along the radial and is slid into the sampling cylinder to connect hand rotary lever and sampling cylinder, and the support leg is equipped with the limiting mechanism for limiting sampling cylinder. The utility model sampling, rotate the hand lever and drive sampling cylinder vertical and go down and sample, when leading out the earth sample, rotate the hand lever again, and the push plate can lead out the earth sample steadily along with the hand rotary lever sliding in the sampling cylinder, and the process of leading out the earth sample is controllable artificially, and the structure is complete after the earth sample is led out easily.

Description

Technical Field

[0001] This utility model belongs to the technical field of exploration and sampling equipment, and specifically relates to a geological exploration and sampling device. Background Technology

[0002] Geological exploration, as a core component of resource exploration, preliminary investigation for engineering construction, and early warning of geological disasters, directly determines the reliability of subsequent geological data analysis, resource reserve assessment, and engineering design based on the accuracy and efficiency of its sampling work. The requirements for soil sample integrity typically need to meet the "Technical Specification for Geological Exploration and Sampling of Building Engineering" (JGJ / T 87-2012). Soil sample integrity is a core prerequisite for ensuring the accuracy of laboratory test data and thus guiding engineering design and construction.

[0003] Currently, the most common exploration sampling equipment is the soil sampler. For example, Chinese utility model patent (CN222379374U) describes a soil sampler for geological exploration. During sampling, the operator holds the handle and applies downward pressure, which drives the sampling tube to insert into the soil layer for sampling through the vertical tube. During the sampling process, the support part supports the sampler to prevent the sampling tube from shaking or shifting. When extracting the soil sample after sampling, the operator holds the push handle and uses the push rod to drive the push block inside the sampling tube to push out the soil sample.

[0004] In practice, the above-mentioned existing technologies have revealed the following technical problems that require improvement: The operator needs to apply downward pressure to the push rod, which drives the push block to push the soil sample out of the sampling tube. During the soil sample extraction process, due to the instability of manual force, if the applied pressure is too small, the soil sample may not be able to be pushed out. If the applied pressure is too large, the soil sample will be pushed out quickly and detach from the sampling tube, colliding with the receiving container below, which will cause damage to the soil sample structure and destroy its integrity.

[0005] Sampling requires the operator to apply downward pressure to the handle, which mainly comes from the operator's body weight, making the sampling process quite strenuous. Utility Model Content

[0006] The purpose of this invention is to provide a geological exploration sampling device, which aims to solve the problems existing in the prior art mentioned above.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A geological exploration sampling device includes a hand-operated rotary rod, a sampling cylinder sleeved on the lower end of the rotary rod and slidably engaged with it, and a fixing frame. The fixing frame has multiple legs surrounding the rotary rod. A support plate is provided at the top of each leg, and a positioning plate is provided at the bottom of each leg. A ground nail is inserted through the positioning plate. A threaded sleeve is inserted vertically through the support plate. The rotary rod has a threaded section that is threadedly connected to the threaded sleeve. An anti-rotation mechanism is provided between the sampling cylinder and the rotary rod. The anti-rotation mechanism includes an L-shaped anti-rotation rod that slides radially into the sampling cylinder to connect the rotary rod and the sampling cylinder. The legs are provided with a limiting mechanism for limiting the position of the sampling cylinder.

[0008] Furthermore, the end of the hand-rotating rod is provided with a push plate that slides with the inner cylinder of the sampling cylinder. The push plate and the anti-rotation rod are respectively provided with a first positioning hole and a second positioning hole in the radial direction. The anti-rotation rod includes a first rod body and a second rod body. The first rod body is used to pass through the first positioning hole and the second positioning hole. The outer wall of the sampling cylinder is provided with a limiting groove, and the second rod body is used to embed into the limiting groove.

[0009] Furthermore, the limiting mechanism includes a limiting plate and a fixed plate arranged parallel to the bottom of the support plate. The support leg is fixedly connected to the fixed plate. The fixed plate has a through hole for the sampling cylinder to pass through. The limiting plate is symmetrically and rotatably arranged on the bottom surface of the fixed plate on both sides of the through hole. One end of the limiting plate on both sides rotates to the bottom of the through hole to support the bottom of the sampling cylinder.

[0010] Furthermore, the limiting plate has a Z-shaped structure, including an upper limiting plate, a connecting plate, and a lower limiting plate connected in sequence. The upper limiting plate is rotatably connected to the fixing plate via a rotating shaft, and the lower limiting plate is used to support the lower edge of the sampling cylinder wall.

[0011] Furthermore, a ring drill bit is threadedly connected to the bottom of the sampling cylinder.

[0012] Compared with the shortcomings and deficiencies of the prior art, the present invention has the following beneficial effects.

[0013] This utility model provides a geological exploration sampling device. The fixed frame is fixed to the ground by the positioning plate at the bottom of the support leg and the ground nail. The rotational motion is converted into axial linear motion by the threaded engagement structure between the threaded section of the hand-operated rod and the threaded sleeve in the center of the support plate. When sampling, the operator only needs to rotate the hand-operated rod to drive the sampling tube to move vertically downward and insert into the soil layer without the need to apply pressure with body weight. When extracting the soil sample, the operator rotates the hand-operated rod again, and the push plate slides in the sampling tube with the hand-operated rod to smoothly extract the soil sample. The soil sample extraction process is controllable and it is easy to maintain the structural integrity of the soil sample after extraction.

[0014] In this invention, the anti-rotation mechanism and the limiting mechanism work together to release the constraint of the anti-rotation rod, allowing the push plate and the sampling cylinder to slide axially. The sampling cylinder is supported by the Z-shaped limiting plate, and the sample can be extracted by rotating the hand lever to drive the push plate. The operation is convenient.

[0015] The annular drill bit with a threaded connection at the bottom of the sampling tube can reduce soil disturbance during sampling, further ensuring the original state of the soil sample and improving the reliability of subsequent sample analysis. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the geological exploration sampling device in this utility model.

[0017] Figure 2 This is a cross-sectional structural diagram of the sampling state of the geological exploration sampling device in this utility model.

[0018] Figure 3 This is a cross-sectional structural diagram of the geological exploration sampling device in the sample export state of this utility model.

[0019] Figure 4 yes Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0020] Figure 5 This is a three-dimensional structural diagram of the sampling cylinder in this utility model.

[0021] Figure 6 This is a schematic diagram of the structure of the stop-rotor of this utility model.

[0022] Figure 7 This is a schematic diagram of the structure in which the limiting protrusion contacts the limiting plate in this utility model.

[0023] In the diagram: 100, fixed frame; 110, support leg; 111, positioning plate; 112, ground nail; 120, support plate; 121, threaded sleeve; 130, fixed plate; 131, limiting plate; 132, limiting protrusion; 210, hand-operated rod; 211, threaded section; 212, push plate; 213, first positioning hole; 220, gripping rod; 300, sampling cylinder; 310, limiting groove; 320, second positioning hole; 400, ring cutter; 500, anti-rotation rod; 510, first rod body; 520, second rod body. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] Reference Figure 1This utility model discloses a geological exploration sampling device, including a sampling cylinder 300, a hand-operated rotating rod 210 and a fixed frame 100. The sampling cylinder 300 is slidably sleeved on the lower end of the hand-operated rotating rod 210. The hand-operated rotating rod 210 is threadedly engaged with the fixed frame 100. Rotating the hand-operated rotating rod 210 can drive the sampling cylinder 300 to move axially to collect samples.

[0026] Reference Figure 2 and Figure 5 The sampling cylinder 300 is a cylindrical structure that is axially connected. The top of the sampling cylinder 300 has an opening for the hand-operated rod 210 to pass through. The bottom of the sampling cylinder 300 is threadedly connected to the annular drill bit 400. Specifically, the bottom of the sampling cylinder 300 has an external thread, and the top of the annular drill bit 400 has an internal thread. The internal thread and the external thread are threadedly connected to achieve a detachable connection between the sampling cylinder 300 and the annular drill bit 400.

[0027] The top of the hand-operated lever 210 is provided with a grip 220 that is vertically connected thereto. The operator holds the grip 220 to operate the sampling. A push plate 212 is fixed to the bottom. The push plate 212 slides through the sampling cylinder 300. The shape and size of the push plate 212 are adapted to the inner cylinder of the sampling cylinder 300. The top opening of the sampling cylinder 300 is adapted to the size of the hand-operated lever 210. The diameter of the hand-operated lever 210 is smaller than the inner cylinder diameter of the sampling cylinder 300. The middle part of the hand-operated lever 210 is provided with a threaded section 211.

[0028] An anti-rotation mechanism is provided between the hand-operated rod 210 and the sampling cylinder 300. Specifically, (refer to...) Figure 6 The anti-rotation mechanism includes an L-shaped anti-rotation rod 500, which can be made of metal. The anti-rotation rod 500 includes a first rod body 510 and a second rod body 520 that are vertically connected. (Refer to...) Figure 4 The push plate 212 has a first positioning hole 213 that passes through both ends in the radial direction. The upper part of the arc-shaped cylinder wall of the sampling cylinder 300 is provided with a second positioning hole 320 that is aligned and connected on both sides. At the same time, the upper part of the arc-shaped outer wall of the sampling cylinder 300 is also provided with a positioning groove 310. The positioning groove 310 is a groove that extends axially along the outer wall of the sampling cylinder 300. One end of the positioning groove 310 is connected to the second positioning hole 320, and the other end extends upward to the upper edge of the outer wall of the sampling cylinder 300.

[0029] The push plate 212 is provided with an air hole that runs through the top and bottom. The air hole is used to vent the sampling cylinder 300 during the sampling process.

[0030] When the first rod 510 passes through the first positioning hole 213 and the second positioning hole 320 to form a radial constraint, and the second rod 520 is embedded in the positioning groove 310 to form an axial constraint, the sampling cylinder 300 and the hand-rotating rod 210 are fixedly connected. At this time, the end of the second rod 520 is located outside the positioning groove 310, which facilitates the installation and removal of the anti-rotation rod 500. When the second rod 520 separates from the positioning groove 310, and the first rod 510 passes through the first positioning hole 213 and the second positioning hole 320, the push plate 212 of the hand-rotating rod 210 can slide axially relative to the sampling cylinder 300.

[0031] The mounting frame 100 has an overall frame structure, specifically including a support plate 120 and a fixing plate 130 that are parallel to each other at different heights. Support legs 110 are vertically connected to the bottom perimeter of the support plate 120. The support legs 110 pass vertically through the fixing plate 130 and are fixedly connected to it, forming a stable support frame. A positioning plate 111 is provided at the bottom of the support legs 110. Ground spikes 112 are movably inserted through the positioning plate 111, and the ground spikes 112 fix the mounting frame 100 to the sampling area via the positioning plate 111. The ground spikes 112 are anchors that pass through the positioning plate 111, and can be made of threaded or pointed metal rods. Their function is to form a mechanical anchor by embedding into the ground, enhancing the anti-displacement capability of the mounting frame 100 and ensuring the stability of the support legs 110 during multiple sampling operations.

[0032] A threaded sleeve 121 is vertically inserted through the center of the support plate 120. The threaded sleeve 121 is threadedly connected to the threaded section 211 of the hand-rotating rod 210, converting the rotational motion into axial linear motion. The fixing plate 130 has a through hole coaxial with the threaded sleeve 121. The hand-rotating rod 210 passes through the through hole, and the diameter of the through hole is slightly larger than the diameter of the sampling cylinder 300.

[0033] The bottom of the fixing plate 130 is symmetrically provided with Z-shaped limiting plates 131 on both sides of the through hole. Each Z-shaped limiting plate 131 includes an upper limiting plate, a connecting plate, and a lower limiting plate connected to one side. The upper limiting plate is rotatably connected to the bottom of the fixing plate 130 via a rotating shaft. The end of the lower limiting plate can rotate to below the through hole, allowing the lower limiting plate to move into or out of the through hole area through rotation. (Ref.) Figure 3 When the sample is extracted, the lower edge of the side wall of the sampling cylinder 300 (located outside the external thread) is moved to the through hole. The two limiting plates 131 are rotated so that the ends of the lower limiting plates move below the through hole. At this time, the ends of the lower limiting plates form a horizontal supporting surface that contacts the lower edge of the side wall of the sampling cylinder 300, thus restricting the downward movement of the sampling cylinder 300. The operator can push the sample out of the sampling cylinder 300 using the push plate 212. When sampling is required again, the limiting plate 131 is rotated in the opposite direction to the outside of the through hole, allowing the sampling cylinder 300 to move freely downward to the area below the fixing plate 130 for sampling.

[0034] In one embodiment, refer to Figure 7 The bottom surface of the fixing plate 130 is provided with a limiting protrusion, which is symmetrically arranged on both sides of the through hole. When the limiting plate 131 rotates into the through hole area, the limiting plate 131 contacts the protrusion, which facilitates the quick positioning of the limiting plate 131.

[0035] The working process of this geological exploration sampling device: 1. Sampling stage, refer to Figure 2 The operator inserts the ground nail 112 through the reserved hole on the positioning plate 111 at the bottom of the outrigger 110 and hammers the ground nail 112 vertically into the ground until the positioning plate 111 is tightly attached to the ground. Through the mechanical anchoring effect of the ground nail 112, the fixed frame 100 is restricted from displacement or tilting during the sampling process, thus completing the fixation of the geological exploration sampling device.

[0036] Align the first rod 510 of the L-shaped anti-rotation rod 500 with the first positioning hole 213 on the push plate 212 and the second positioning hole 320 on the side wall of the sampling cylinder 300, and insert it horizontally so that the first rod 510 passes through both positioning holes at the same time, forming a radial constraint; then embed the second rod 520 of the anti-rotation rod 500 into the positioning groove 310 on the outer wall of the sampling cylinder 300, and use the axial limiting effect of the positioning groove 310 to achieve a fixed connection between the sampling cylinder 300 and the hand-rotating rod 210, so as to prevent relative rotation between the two during the sampling process.

[0037] Align the internal thread at the top of the ring drill bit 400 with the external thread at the bottom of the sampling cylinder 300, and rotate the ring drill bit 400 clockwise until the threads are tightly connected.

[0038] The operator holds the handle 220 at the top of the hand-operated rotating rod 210 with both hands, keeping the handle 220 horizontal, and rotates the hand-operated rotating rod 210 clockwise at a constant speed. Because the threaded section 211 in the middle of the hand-operated rotating rod 210 is threadedly engaged with the threaded sleeve 121 in the center of the support plate 120, the rotational motion is converted into axial linear motion, and the hand-operated rotating rod 210 drives the sampling cylinder 300 to move downwards vertically. Under the cutting action of the annular drill bit 400, the sampling cylinder 300 gradually inserts into the soil layer. As the sampling cylinder 300 continues to move downwards, soil continuously enters the interior of the sampling cylinder 300. After sampling, the hand-operated rotating rod 210 is rotated in the opposite direction to separate the sampling cylinder 300 from the soil layer, completing the sampling process.

[0039] 2. Sample export stage, refer to Figure 3 Rotate to remove the annular drill bit 400. Rotate the hand crank 210 in the opposite direction to move the lower edge of the sampling cylinder 300 to the through hole position of the fixing plate 130. Rotate the two limiting plates 131 to make them contact the limiting protrusions. At this time, the end of the lower limiting plate is directly below the through hole. Rotate the hand crank 210 in the forward direction to make the lower edge of the side wall of the sampling cylinder 300 contact the ends of the two lower limiting plates.

[0040] The operator can quickly separate the anti-rotation rod 500 from the sampling cylinder 300 by using the end of the anti-rotation rod 500 located on the outside of the sampling cylinder 300, thereby releasing the anti-rotation constraint between the hand-rotating rod 210 and the sampling cylinder 300. At this time, the hand-rotating rod 210 can slide independently relative to the sampling cylinder 300.

[0041] The operator places the container for storing the sample below the sampling tube 300 and slowly rotates the hand-operated lever 210 clockwise. Simultaneously, the push plate 212 at the lower end of the hand-operated lever 210 slides downwards within the sampling tube 300. The push plate 212 is adapted to the shape and size of the inner tube of the sampling tube 300, allowing it to fit tightly against the tube wall. Under the pushing force of the push plate 212, the soil sample inside the sampling tube 300 is gradually pushed downwards and finally exits from the bottom opening of the sampling tube 300, completing the sample extraction.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A geological exploration sampling device, comprising a hand-operated rotary rod (210), a sampling cylinder (300) sleeved on the lower end of the hand-operated rotary rod (210) and slidably engaged with the hand-operated rotary rod (210), and a fixing frame, wherein the fixing frame (100) is provided with a plurality of legs (110) surrounding the hand-operated rotary rod (210), and the top of each leg (110) is provided with a support plate (120), characterized in that, The bottom of the support leg (110) is provided with a positioning plate (111), and the positioning plate (111) is provided with a ground nail (112). The support plate (120) is provided with a threaded sleeve (121) in the vertical direction. The hand-spinning rod (210) is provided with a threaded section (211) that is threaded to the threaded sleeve (121). An anti-rotation mechanism is provided between the sampling cylinder (300) and the hand-spinning rod (210). The anti-rotation mechanism includes an L-shaped anti-rotation rod (500). The anti-rotation rod (500) is slidably inserted into the sampling cylinder (300) in the radial direction to connect the hand-spinning rod (210) and the sampling cylinder (300). The support leg (110) is provided with a limiting mechanism for limiting the sampling cylinder (300). The end of the hand-rotating rod (210) is provided with a push plate (212) that slides with the inner cylinder of the sampling cylinder (300). The push plate (212) and the sampling cylinder (300) are respectively provided with a first positioning hole (213) and a second positioning hole (320) in the radial direction. The anti-rotation rod (500) includes a first rod body (510) and a second rod body (520). The first rod body (510) is used to pass through the first positioning hole (213) and the second positioning hole (320). The outer wall of the sampling cylinder (300) is provided with a limiting groove (310). The second rod body (520) is used to embed into the limiting groove (310). The limiting mechanism includes a limiting plate (131) and a fixing plate (130) arranged parallel to the bottom of the support plate (120). The support leg (110) is fixedly connected to the fixing plate (130). The fixing plate (130) is provided with a through hole for the sampling cylinder (300) to pass through. The limiting plate (131) is symmetrically and rotatably arranged on the bottom surface of the fixing plate (130) on both sides of the through hole. One end of the limiting plate (131) on both sides rotates to the bottom of the through hole to support the bottom of the sampling cylinder (300). The limiting plate (131) has a Z-shaped structure and includes an upper limiting plate, a connecting plate and a lower limiting plate connected in sequence. The upper limiting plate is rotatably connected to the fixing plate (130) through a rotating shaft. The lower limiting plate is used to support the lower edge of the cylinder wall of the sampling cylinder (300).

2. The sampling device as described in claim 1, characterized in that, The bottom of the sampling cylinder (300) is threaded with a ring drill bit (400).

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