Sampling device for hydrogeological exploration

Abstract

The invention discloses a sampling device for hydrogeological exploration, and particularly relates to the technical field of geological exploration, the sampling device comprises an engine, a handrail is arranged on the surface of the engine, a speed reducer is fixed at the lower end of the engine, and the speed reducer is connected with the engine through a clutch and a bevel gear set; a torque limiter is arranged at the output end of the speed reducer, and a sampling assembly is fixed to the output end of the torque limiter. According to the sampling device for hydrogeological exploration, through the splicing design of the limiting blocks and the limiting grooves of the extension rods, the number of the extension rods can be increased or decreased according to exploration requirements, the sampling depth can be flexibly adjusted, geological sampling scenes with different depths can be adapted without replacing the whole device, operation is convenient, and diversified exploration requirements can be met. And meanwhile, the conical design of the second spiral conveying rod facilitates cutting into soil, the reverse transmission characteristic of the planetary gear set is matched, and the drilling and feeding efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of geological exploration, in particular to a sampling device for hydrogeological exploration. Background Art

[0002] Hydrogeology refers to the various changes and movements of groundwater in nature. It primarily studies the science of groundwater, including its distribution and formation patterns. Hydrogeological exploration, also known as "hydrogeological survey," refers to the investigation and research conducted to determine the hydrogeological conditions of a region. Its goal is to understand the causes, distribution, and movement patterns of groundwater and surface water. This provides a basis for the rational exploitation and utilization of water resources and the accurate design and construction of foundation and piling projects. It encompasses both underground and surface hydrological surveys.

[0003] Traditional hydrogeological sampling often presents challenges such as limited sampling depth, easily disturbed samples, and equipment prone to overload damage. For example, fixed-length sampling rods are inadequate for deep geological exploration; air and moisture in the soil can cause the sample to loosen during sampling, affecting detection accuracy; and excessive torque can damage equipment components if a hard object is encountered during drilling. To address these issues, the present invention designs a sampling device with adjustable depth, controllable sample state, and safety features. Summary of the Invention

[0004] The main purpose of the present invention is to provide a sampling device for hydrogeological exploration, which can effectively solve the problems of being unable to adapt to the needs of deep geological exploration and easily causing damage to equipment components due to excessive torque.

[0005] To achieve the above object, the technical solution adopted by the present invention is: A sampling device for hydrogeological exploration includes an engine, an armrest is provided on the surface of the engine, a reducer is fixed to the lower end of the engine, the reducer and the engine are connected through a clutch and a bevel gear set, a torque limiter is provided at the output end of the reducer, and a sampling assembly is fixed to the output end of the torque limiter.

[0006] Preferably, the sampling assembly includes a device housing, a planetary gear set is arranged inside the device housing, a plurality of extension rods are arranged in sequence on the upper and lower ends of the lower end of the device housing, the lower end of the lowest extension rod is connected to the sampling rod, the torque limiter and the reducer are both hollow in design, a connecting shaft 1 is fixed to the reducer housing, and a fixing plate is fixed to the lower end of the connecting shaft.

[0007] Preferably, the sun gear and the planetary gears of the planetary gear set both rotate on the lower end of the fixed plate, and the ring gear of the planetary gear set is fixedly connected to the output end of the torque limiter.

[0008] Preferably, the extension rod includes a hollow tube 1 connected to the device shell, two brackets 1 are fixed inside the hollow tube 1, and a connecting shaft 2 coaxial with the hollow tube is rotatably installed between the two brackets 1.

[0009] Preferably, a limiting block is provided at the upper end of the second connecting shaft, and a limiting groove cooperating with the limiting block is provided at the lower end of the second connecting shaft.

[0010] Preferably, the sampling rod comprises a hollow tube 2, two upper and lower brackets 2 are fixed to the inner surface of the hollow tube 2, a spiral conveying rod 1 is arranged between the two brackets 2, and a spiral conveying rod 2 is fixed to a lower end of the spiral conveying rod.

[0011] Preferably, the pitch of the first spiral conveying rod gradually shortens from bottom to top, and the lower portion of the second spiral conveying rod is conical in design.

[0012] Preferably, the pitch of the spiral conveying rod 1 is evenly set, and the lower part of the spiral conveying rod 2 is conical in design.

[0013] Preferably, a limiting block that matches the limiting groove is fixed to an upper end of the spiral conveying rod.

[0014] Compared with the prior art, the present invention has the following beneficial effects: This sampling device uses the limit block and limit groove splicing design of the extension rod. The number of extension rods can be increased or decreased according to exploration needs, and the sampling depth can be flexibly adjusted. It can adapt to geological sampling scenarios at different depths without replacing the entire device. It is easy to operate and can meet diverse exploration needs. This sampling device offers two options for the sampling rod's spiral feed rod (first screw): a gradual pitch and a uniform pitch. The gradual pitch squeezes air and moisture out of the soil, making it suitable for density testing; the uniform pitch preserves the soil's original moisture and structure, making it suitable for moisture testing. Furthermore, the tapered design of the second screw feed rod facilitates soil penetration, and combined with the reverse transmission characteristics of the planetary gear set, improves drilling and feeding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the engine part of the present invention; Figure 3 Schematic diagram of the structure of the sampling component of the present invention Figure 1 ; Figure 4 Schematic diagram of the structure of the sampling component of the present invention Figure 2 ; Figure 5 Schematic diagram of the structure of the sampling component of the present invention Figure 3 ; Figure 6 Schematic diagram of the structure of the sampling component of the present invention Figure 4 ; Figure 7 It is a structural schematic diagram of the extension rod of the present invention; Figure 8 It is a structural schematic diagram of the sampling rod of the present invention; Figure 9 It is a cross-sectional view of the sampling rod of the present invention.

[0016] In the figure: 1. Engine; 2. Armrest; 3. Reducer; 4. Clutch; 5. Bevel gear set; 6. Torque limiter; 7. Sampling assembly; 71. Device housing; 72. Planetary gear set; 73. Extension rod; 74. Sampling rod; 75. Connecting shaft 1; 76. Fixing plate; 731. Hollow tube 1; 732. Bracket 1; 733. Connecting shaft 2; 741. Hollow tube 2; 742. Bracket 2; 743. Screw conveyor rod 1; 744. Screw conveyor rod 2. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0018] like Figure 1 and Figure 2 As shown, a sampling device for hydrogeological exploration includes an engine 1, a handrail 2 is provided on the surface of the engine 1, and a reducer 3 is fixed to the lower end of the engine 1. The reducer 3 is a prior art and can play a role in reducing speed and increasing torque to prevent the device from having insufficient torque when drilling and sampling, thereby affecting the normal operation of the device. The reducer 3 is connected to the engine 1 through a clutch 4 and a bevel gear set 5. The clutch 4 is a prior art. Since the engine 1 will always be in a started state when working, but it is not necessary to drill and sample all the time, the clutch 4 is required to switch the transmission between the engine 1 and the reducer 3. The output end of the reducer 3 is provided with a torque limiter 6. The torque limiter 6 is a prior art and can play a role in torque limitation. When the hollow tube is stuck, the torque limiter 6 can slip to prevent the reverse force from accidentally injuring the operator when the drill bit is stuck. A sampling component 7 is fixed to the output end of the torque limiter 6.

[0019] like Figure 3 - Figure 9As shown, the sampling assembly 7 includes a device housing 71, a planetary gear set 72 is provided inside the device housing 71, and a plurality of extension rods 73 are sequentially provided on the upper and lower ends of the device housing 71. The design of multiple extension rods 73 being spliced ​​with each other can perform sampling at different depths. The lower end of the lowest extension rod 73 is connected to a sampling rod 74. The torque limiter 6 and the reducer 3 are both hollow in design. A connecting shaft 75 is fixed to the reducer 3 housing. The connecting shaft 75 passes through the torque limiter 6 and the reducer 3 without hindering the normal operation of the torque limiter 6 and the reducer 3. A fixing plate 76 is fixed to the lower end of the connecting shaft 75. The sun gear and the planetary gears of the planetary gear set 72 rotate on the lower end of the fixing plate 76. The ring gear of the planetary gear set 72 is fixedly connected to the output end of the torque limiter 6. When the ring gear of the planetary gear set 72 rotates, it can rotate with the planetary gear. Due to the characteristics of the planetary gear set 72 itself, the sun gear and the ring gear rotate in opposite directions. The gear meshing characteristics are used to achieve "reverse rotation of the ring gear and the sun gear", providing reverse power for the sampling rod 74 and improving drilling efficiency.

[0020] like Figure 7 As shown, the extension rod 73 includes a hollow tube 731 connected to the device housing 71, two brackets 732 are fixed inside the hollow tube 731, and a connecting shaft 733 coaxial with the hollow tube 731 is rotatably installed between the two brackets 732, wherein the bracket 732 is used to support the connecting shaft 733, and a limiting block is provided at the upper end of the connecting shaft 733, and a limiting groove cooperating with the limiting block is provided at the lower end of the connecting shaft 733 to facilitate the connection between multiple extension rods 73, so that the device can sample soil at different depths through the connection between multiple extension rods 73 when in use.

[0021] like Figure 8 and Figure 9As shown, the sampling rod 74 includes a hollow tube 2 741, and two brackets 2 742 arranged up and down are fixed on the inner surface of the hollow tube 2 741. A spiral conveying rod 1 743 is provided between the two brackets 2 742, wherein the bracket 2 742 is used to support the spiral conveying rod 1 743, and the lower end of the spiral conveying rod 1 743 is fixed with a spiral conveying rod 2 744. Furthermore, in order to facilitate the drilling and sampling of the soil, the lower part of the spiral conveying rod 2 744 is conical in design. The conical design can facilitate the insertion of the spiral conveying rod 1 743 into the soil, and also facilitates the spiral conveying rod 1 743 to drill the soil, thereby improving the working efficiency of the device. The pitch of the spiral conveying rod 743 gradually shortens from bottom to top. Since the inner diameter of the hollow tube 741 remains unchanged, when the pitch at the feed end is large (more material capacity) and the pitch at the discharge end is small (less material capacity), the soil is continuously pushed forward, and the material capacity space gradually shrinks. The blades and the casing will squeeze the soil, forcing the air and moisture in the soil to be discharged, achieving compression (if the device needs to detect the moisture in the soil during use, the pitch of the spiral conveying rod 743 is always equal). The pitch of the spiral conveying rod 743 is evenly set to maintain the original moisture and structure of the soil, which is suitable for groundwater-related sediments or moisture content monitoring samples.

[0022] Furthermore, in order to facilitate the connection between the sampling rod 74 and the lowest extension rod 73, a limiting block that matches the limiting groove is fixed to the upper end of the spiral conveying rod 743.

[0023] At the same time, due to the design of the connection between the spiral conveying rod and the connecting shaft 2 733, the spiral conveying rod and the hollow tube can rotate in opposite directions, so that the spiral conveying rod 2 744 can drill the soil, and it can also facilitate the spiral conveying rod 1 743 to transport the soil upward.

[0024] The specific implementation of this embodiment is as follows: When actually operating the hydrogeological exploration sampling device, the entire device is first carried to the sampling point using the handrail 2 on the device surface. After starting the engine 1, the power generated by the engine 1 can be transmitted to the reducer 3 through the clutch 4 and the bevel gear set 5.

[0025] Reducer 3 utilizes existing speed reduction and torque increase technology to convert the high-speed, low-torque power of engine 1 into a low-speed, high-torque output, providing sufficient power for subsequent drilling and sampling, and preventing drilling interruptions due to insufficient torque. After processing by reducer 3, the power is transmitted to torque limiter 6, which provides safety protection for the device: if the sampling rod 74 or the spiral conveying structure accidentally gets stuck during sampling, torque limiter 6 automatically slips, preventing the reverse force from being transmitted to engine 1 and transmission components, effectively reducing the risk of equipment damage.

[0026] After passing through the torque limiter 6, the power enters the sampling assembly 7. At this time, the ring gear of the planetary gear set 72 fixedly connected to the output end of the torque limiter 6 begins to rotate. Since the sun gear and the planetary gears of the planetary gear set 72 are both rotatably mounted on the lower end of the fixed plate 76, the rotation of the ring gear will drive the sun gear to rotate in the opposite direction through gear meshing (the direction switching is achieved by utilizing the transmission characteristics of the planetary gear set 72 itself).

[0027] The extension rod 73 of the sampling assembly 7 and the sampling rod 74 are quickly connected through the cooperation of the limit block and the limit groove. The operator can increase or decrease the number of extension rods 73 according to the sampling depth requirements: the hollow tube 1 731 of the extension rod 73 is the main structure, and the internal bracket 1 732 provides stable support for the connecting shaft 2 733. The connecting shaft 2 733 is connected to the spiral conveying rod 1 743 of the adjacent extension rod 73 or sampling rod 74 through the limit structure at the end to ensure stable power transmission.

[0028] During sampling, the tapered lower end of the auger 744 of the sampling rod 74 allows for easy penetration into the soil. As the connecting shaft 733 and auger 744 rotate (in the opposite direction of hollow tube 1 731 and hollow tube 2 741, achieved through the direction switching of the planetary gear set 72), the soil is continuously drawn into the spiral structure. If soil compression is required (e.g., to remove air and excess moisture to improve sampling density), the pitch of auger 743 gradually decreases from bottom to top—the feed end (lower end) has a larger pitch, providing ample material storage, while the discharge end (upper end) has a smaller pitch, constricting material storage. As the soil is transported upward, it is squeezed between the blades and the tube wall, achieving dehydration and degassing. If it is necessary to retain the original soil moisture for testing, auger 743 with a more uniform pitch can be replaced.

[0029] During the entire sampling process, connecting shaft 1 (75) passes through reducer 3 and torque limiter 6, maintaining stable power transmission between them. It also provides stable support for planetary gear set 72 via a fixed plate 76 at its lower end, ensuring stable operation of the transmission structure. After sampling is complete, engine 1 is shut down, clutch 4 is disengaged, and the sample can be removed by removing the extension rod 73 and sampling rod 74 using the armrest 2.

[0030] It should be noted that the specific installation methods, circuit connection methods and control methods of the engine 1, armrest 2, reducer 3 and clutch 4 in the present invention are all conventional designs and will not be elaborated in detail in the present invention.

Claims

1. A sampling device for hydrogeological exploration, comprising an engine (1), characterized in that: The engine (1) is provided with an armrest (2) on its surface, a reducer (3) is fixed to the lower end of the engine (1), the reducer (3) and the engine (1) are connected via a clutch (4) and a bevel gear set (5), a torque limiter (6) is provided at the output end of the reducer (3), and a sampling assembly (7) is fixed to the output end of the torque limiter (6).

2. A sampling device for hydrogeological exploration according to claim 1, characterized in that: The sampling assembly (7) includes a device housing (71), a planetary gear set (72) is provided inside the device housing (71), a plurality of extension rods (73) are sequentially provided on the upper and lower ends of the lower end of the device housing (71), and the lower end of the lowest extension rod (73) is connected to a sampling rod (74), the torque limiter (6) and the reducer (3) are both hollow in design, the reducer (3) housing is fixed with a connecting shaft (75), and the lower end of the connecting shaft (75) is fixed with a fixing plate (76).

3. A sampling device for hydrogeological exploration according to claim 2, characterized in that: The sun gear and the planetary gears of the planetary gear set (72) both rotate on the lower end of the fixed plate (76), and the ring gear of the planetary gear set (72) is fixedly connected to the output end of the torque limiter (6).

4. A sampling device for hydrogeological exploration according to claim 2, characterized in that: The extension rod (73) includes a hollow tube (731) connected to the device housing (71), two brackets (732) are fixed inside the hollow tube (731), and a connecting shaft (733) coaxial with the hollow tube (731) is rotatably installed between the two brackets (732).

5. The sampling device for hydrogeological exploration according to claim 4, characterized in that: A limiting block is provided at the upper end of the second connecting shaft (733), and a limiting groove cooperating with the limiting block is provided at the lower end of the second connecting shaft (733).

6. The sampling device for hydrogeological exploration according to claim 5, characterized in that: The sampling rod (74) includes a second hollow tube (741), and two brackets (742) arranged upper and lower are fixed on the inner surface of the second hollow tube (741). A spiral conveying rod (743) is arranged between the two brackets (742), and a spiral conveying rod (744) is fixed to the lower end of the first spiral conveying rod (743).

7. The sampling device for hydrogeological exploration according to claim 6, characterized in that: The pitch of the first spiral conveying rod (743) gradually shortens from bottom to top, and the bottom of the second spiral conveying rod (744) is conical in design.

8. The sampling device for hydrogeological exploration according to claim 6, characterized in that: The pitch of the first spiral conveying rod (743) is evenly arranged, and the lower portion of the second spiral conveying rod (744) is conical in design.

9. The sampling device for hydrogeological exploration according to claim 6, characterized in that: A limiting block that matches the limiting groove is fixed to the upper end of the spiral conveying rod (743).

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