A geothermal detection device suitable for various terrain and soil layers

Abstract

The present invention discloses a geothermal detection device applicable to various terrains and soil layers, belonging to the field of geothermal detection technology. The invention comprises a supporting straight plate, wherein two symmetrical supporting feet are fixedly connected to the lower side of the supporting straight plate, and two symmetrical first slideways are provided in the supporting straight plate, wherein a first sliding frame is slidably connected in the first slideway, and a supporting base plate is fixedly connected to one side of the first sliding frame, and a first circular hole is provided on the upper surface of the supporting base plate, and a detection drilling assembly is installed in the first circular hole, and the detection drilling assembly rotates in the first circular hole, and as the first sliding frame descends, the detection drilling assembly will contact the surface of the soil layer and start to drill into the ground. When the detection drilling assembly reaches a predetermined depth, the detection drilling assembly will transport the underground soil sample to the inside of the device for analysis, so that it can adapt to different terrain conditions and ensure the accuracy and reliability of detection.

Description

Technical Field

[0001] The invention belongs to the field of geothermal detection technology, and in particular relates to a geothermal detection device suitable for various terrains and soil layers. Background Art

[0002] Geothermal resources are natural heat energy inside the earth with extremely high temperatures, such as lava from volcanic eruptions and natural hot springs. This heat can be converted into energy. In order to detect geothermal resources, geothermal detection devices are usually required. These devices mainly detect heat by measuring infrared rays from the surface through sensors. However, due to the obstruction of the surface soil, infrared rays sometimes cannot be transmitted to the ground, resulting in some geothermal resources being unable to be detected, thus missing the opportunity to mine.

[0003] For deep geothermal resources, drilling is required for detection. If the drill rod is pulled out after drilling and then inserted into the detection equipment, the borehole will be lost, affecting the detection effect. When the geothermal detection head is drilled directly into the ground, the detection head may be damaged by hard materials such as underground rocks during the drilling process, affecting its service life. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides a geothermal detection device applicable to various terrains and soil layers, which has the advantage of being able to directly detect deep geothermal resources underground, thus solving the problems of the prior art.

[0005] The present invention is implemented as follows: a geothermal detection device suitable for various terrains and soil layers comprises a supporting straight plate, two symmetrical supporting feet are fixedly connected to the lower side of the supporting straight plate, and two symmetrical first slideways are provided in the supporting straight plate;

[0006] A first sliding frame is slidably connected in the first slideway, a supporting bottom plate is fixedly connected to one side of the first sliding frame, and a first circular hole is opened on the upper surface of the supporting bottom plate;

[0007] A detection drilling assembly is installed in the first circular hole.

[0008] As a preferred embodiment of the present invention, the detection drilling assembly includes a first rotating shaft, and the first rotating shaft is installed in the first circular hole;

[0009] A first spiral blade is fixedly connected to the outer surface of the first rotating shaft, and the first spiral blade is located at the lower side of the supporting bottom plate;

[0010] A drill bit is fixedly connected to the bottom end of the first rotating shaft;

[0011] A first cavity is provided in the first rotating shaft, a feed groove is provided on the surface of the drill bit, and the first cavity is communicated with the feed groove.

[0012] As a preferred embodiment of the present invention, first drill rods are installed on both sides of the supporting straight plate, and the first drill rods are placed in a triangle;

[0013] The outer surface of the first drill rod is fixedly connected with a second spiral blade, the inside of the first drill rod is threadedly connected with a first screw rod, and one end of the first screw rod is installed with a first motor.

[0014] As a preferred embodiment of the present invention, the outer surface of each of the first drill rods is rotatably connected with a first fixing sleeve, and each of the first fixing sleeves is sleeved on the outer surface of each of the first drill rods;

[0015] A first airbag is disposed on the outer side of the first fixing sleeve, the first fixing sleeve penetrates the first airbag, and the inner side of the first airbag is slidably connected to the supporting straight plate;

[0016] The upper end of the first rotating shaft is rotatably connected to a sealing cavity cover;

[0017] A flexible hose is installed between the sealing cavity cover and the first airbag, and the flexible hose is connected to the first cavity.

[0018] As a preferred embodiment of the present invention, the upper side of the first airbag is made of hard material, and the lower side of the first airbag is made of rubber material.

[0019] As a preferred embodiment of the present invention, a second screw rod is connected to the internal thread of the first sliding frame, and a second motor is installed on the upper end of the second screw rod.

[0020] As a preferred embodiment of the present invention, a first gear is fixedly connected to the outer surface of the first rotating shaft, the first gear is located on the upper side of the supporting base plate, a second gear is meshed with one side of the first gear, the axial portion of the second gear is fixedly connected to the second rotating shaft, a third motor is provided at one end of the second rotating shaft, and the output end of the third motor is fixedly connected to the second rotating shaft.

[0021] As a preferred embodiment of the present invention, a first bracket is installed on both sides of the supporting straight plate, a second bracket is provided on the lower side of the first bracket, one side of the second bracket is fixedly connected to the supporting bottom plate, the first screw rod passes through the second bracket, the first drill rod is located on the lower side of the second bracket, one side of the first motor is fixedly connected to the first bracket, and one side of the first bracket and the second bracket are fixedly connected to a hand-held rod.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] When performing soil layer detection, first place the detection device above the target soil layer. If the ground is uneven, it is necessary to manually adjust the ground to a flat state. Then, use the support straight plate and support feet to ensure that the device is horizontal and stable in this area. Then, operate the first sliding frame to move downward along the first slide, and the support base plate will also descend synchronously. The detection drilling assembly rotates in the first circular hole. As the first sliding frame descends, the detection drilling assembly will contact the surface of the soil layer and begin to drill into the ground. When the detection drilling assembly reaches the predetermined depth, the detection drilling assembly will transport the underground soil sample to the inside of the device for analysis, so that it can adapt to different terrain conditions and ensure the accuracy and reliability of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of a first-view stereoscopic structure of a geothermal detection device applicable to various terrains and soil layers provided by an embodiment of the present invention;

[0025] Figure 2 The present invention provides a geothermal detection device suitable for various terrains and soil layers. Figure 1 Part A in the middle is a partial enlarged schematic diagram of the three-dimensional structure;

[0026] Figure 3 is a schematic diagram of a second perspective stereoscopic structure of a geothermal detection device applicable to various terrains and soil layers provided by an embodiment of the present invention;

[0027] Figure 4 It is a schematic diagram of a planar structure from a right-view perspective of a geothermal detection device applicable to various terrains and soil layers provided by an embodiment of the present invention;

[0028] Figure 5 The present invention provides a geothermal detection device suitable for various terrains and soil layers. Figure 4 Part B in the middle is a partial enlarged schematic diagram of the plane structure;

[0029] Figure 6 It is a schematic diagram of the internal cross-sectional three-dimensional structure of a geothermal detection device applicable to various terrains and soil layers provided by an embodiment of the present invention;

[0030] Figure 7 The present invention provides a geothermal detection device suitable for various terrains and soil layers. Figure 6 The schematic diagram of the partially enlarged three-dimensional structure of part C in the middle;

[0031] Figure 8 It is a schematic diagram of the internal cross-sectional plan structure from a main viewing angle of a geothermal detection device applicable to various terrains and soil layers provided by an embodiment of the present invention;

[0032] Fig. 9 It is a schematic diagram of the planar structure from a top-down perspective of a geothermal detection device applicable to various terrains and soil layers provided by an embodiment of the present invention.

[0033] In the figure: 1. support straight plate; 2. support foot; 3. first slide; 4. first sliding frame; 5. support bottom plate; 6. first rotating shaft; 7. first spiral blade; 8. drill bit; 9. first cavity; 10. feed trough; 11. first drill rod; 12. second spiral blade; 13. first screw rod; 14. first motor; 15. first fixing sleeve; 16. first air bag; 17. sealing chamber cover; 18. flexible hose; 19. second screw rod; 20. second motor; 21. first gear; 22. second gear; 23. second rotating shaft; 24. third motor; 25. first bracket; 26. second bracket; 27. hand-held rod. DETAILED DESCRIPTION

[0034] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0035] The structure of the present invention is described in detail below in conjunction with the accompanying drawings.

[0036] See also Figures 1 to 9 A geothermal detection device suitable for various terrains and soil layers provided in an embodiment of the present invention includes a support straight plate 1, two symmetrical support feet 2 are fixedly connected to the lower side of the support straight plate 1, and two symmetrical first slideways 3 are provided in the support straight plate 1; a first sliding frame 4 is slidably connected in the first slideway 3, a support base plate 5 is fixedly connected to one side of the first sliding frame 4, and a first circular hole is provided on the upper surface of the support base plate 5; a detection drilling assembly is installed in the first circular hole.

[0037] The above scheme is adopted: when in use, when it is necessary to detect the soil layer, first place the device above the soil layer to be detected. If the ground is uneven, make the ground level by manual adjustment. Then, use the support straight plate 1 and the support foot 2 to ensure that the device is horizontally stable in this area. Then drive the first sliding frame 4 to move downward along the first slide 3, and at the same time drive the supporting bottom plate 5 to descend synchronously. The detection drilling assembly rotates in the first circular hole. As the first sliding frame 4 descends, the detection drilling assembly contacts the surface of the soil layer and starts to drill into the ground.

[0038] When the detection drilling assembly reaches the appropriate depth, the detection drilling assembly will transport underground soil samples inside for soil analysis, thereby being able to adapt to various terrain conditions and ensuring the accuracy and reliability of detection.

[0039] It should be noted that: first, if geothermal fluid is to be detected, the detection drilling assembly can also be drilled into the ground for sampling. Second, if geothermal fluid is to be detected, an instrument can be used on the ground in advance to detect whether there is geothermal fluid underground, such as using a ground electromagnetic detector to detect. The specific adjustment can be made according to actual needs. Third, a horizontal bubble can be installed on the support straight plate 1 to detect whether the device is tilted.

[0040] Furthermore, the detection drilling assembly includes a first rotating shaft 6, which is installed in the first circular hole; a first spiral blade 7 is fixedly connected to the outer surface of the first rotating shaft 6, and the first spiral blade 7 is located on the lower side of the supporting base plate 5; a drill bit 8 is fixedly connected to the bottom end of the first rotating shaft 6; a first cavity 9 is opened in the first rotating shaft 6, and a feed groove 10 is opened on the surface of the drill bit 8, and the first cavity 9 and the feed groove 10 are connected to each other.

[0041] The above scheme is adopted: when in use, when it is necessary to detect the soil layer, the first sliding frame 4 moves downward in the first slide 3, thereby driving the first rotating shaft 6 to move downward synchronously, so that the drill bit 8 at the lower end of the first rotating shaft 6 contacts and penetrates the surface of the soil layer. As the drill bit 8 rotates, the drill bit 8 and the first spiral blade 7 work together to transport the drilled soil to the ground for staff to sample and subsequently analyze. When the drill bit 8 penetrates to an appropriate depth, since the feed trough 10 and the first cavity 9 are interconnected, the soil sample enters the first cavity 9 through the feed trough 10, which is convenient for detecting soil components. In addition, for the detection of geothermal fluid, the geothermal fluid can also enter the first cavity 9 through the feed trough 10 for analysis, effectively preventing the phenomenon of drilling lost due to pulling out the drill rod after drilling and then inserting it into the detection equipment.

[0042] It should be noted that: first, the length of the first rotating shaft 6 can be adjusted according to actual needs, and the length of the first rotating shaft 6 can directly affect the depth of the borehole. Second, a temperature sensor, a pressure sensor, a flow meter and a chemical composition analyzer can be installed in the first cavity 9, and the temperature, pressure, flow rate and chemical composition of the geothermal fluid can be directly detected in the first cavity 9. Third, any one of the above-mentioned sensors can be used. Of course, multiple sensors can be used according to actual needs, and the detected data can be uploaded to the terminal. Fourth, a one-way valve can be installed in the first cavity 9. This one-way valve can be placed on the side close to the feed trough 10 to control the inflow of soil.

[0043] Furthermore, first drill rods 11 are installed on both sides of the supporting straight plate 1, and the first drill rods 11 are placed in a triangular manner; the outer surface of the first drill rod 11 is fixedly connected to the second spiral blade 12, and the first drill rod 11 is threadedly connected to the first screw rod 13, and one end of the first screw rod 13 is installed with a first motor 14.

[0044] The above scheme is adopted: when in use, after the device is placed above the soil layer to be detected, the first rotating shaft 6 has not yet moved downward, and the output end of the first motor 14 drives the first screw 13 to rotate. At this time, the first screw 13 starts to rotate through the drive of the first motor 14, thereby driving the three first drill rods 11 arranged in a triangle to move downward synchronously and approach the soil layer. Therefore, after the drill bit 8 of the first drill rod 11 contacts the soil layer, the first drill rod 11 drives the second spiral blade 12 to continue drilling the soil layer. Therefore, the three first drill rods 11 can stably and evenly apply force to the soil layer, effectively avoiding the deviation caused by single-point drilling.

[0045] The three first drill rods 11 are inserted into the ground in a triangular configuration. When the device is tilted due to uneven terrain, the first drill rod 11 on the tilted side will suspend drilling, while the first drill rod 11 on the other side that is not tilted will continue drilling. By using differentiated drilling methods, the device is adjusted to gradually return to a balanced state, thereby enhancing its stability. When it is no longer in a tilted state, the first rotating shaft 6 can be driven to drill into the ground.

[0046] When multiple first drill rods 11 are inserted into the ground, since the multiple first drill rods 11 are arranged around the first rotating shaft 6, the first drill rods 11 can detect the soil layer or other geothermal fluid around the first rotating shaft 6, thereby increasing the detection area or providing multi-point data collection.

[0047] It should be noted that: first, if the device is in an inclined state, the first rotating shaft 6 can drill a hole underground only after the multiple first drill rods 11 drill into the soil layer to adjust the device angle, thereby improving the accuracy of sampling using the first rotating shaft 6. Second, detection sensors can also be installed inside the multiple first drill rods 11, and the sensors used can be the same as the sensors mentioned above, and can be adjusted according to actual needs.

[0048] Furthermore, the outer surface of the first drill rod 11 is rotatably connected with a first fixing sleeve 15, and the first fixing sleeve 15 is sleeved on the outer surface of the first drill rod 11; a first airbag 16 is provided on the outer side of the first fixing sleeve 15, and the first fixing sleeve 15 penetrates into the first airbag 16, and the inner side of the first airbag 16 is slidably connected to the supporting straight plate 1; a sealing cavity cover 17 is rotatably connected to the upper end of the first rotating shaft 6; a flexible hose 18 is installed between the sealing cavity cover 17 and the first airbag 16, and the flexible hose 18 is connected to the first cavity 9.

[0049] Furthermore, the upper side of the first airbag 16 is made of hard material, and the lower side of the first airbag 16 is made of rubber material.

[0050] The above scheme is adopted: when in use, when the multiple first drill rods 11 move downward and gradually approach the soil layer, until they are close to the soil layer. Before contacting the soil layer, the multiple first drill rods 11 keep moving synchronously and drive the first airbag 16 to move downward together. As the first drill rods 11 continue to drill, the first airbag 16 begins to contact the soil layer. Since the bottom of the first airbag 16 is made of rubber material, it can prevent small stones from causing damage to the airbag. As the first airbag 16 is compressed, the upper part of its hard material causes the bottom of the first airbag 16 to gradually deform to adapt to different terrain conditions.

[0051] Here are some examples:

[0052] For example, when the first airbag 16 encounters a concave or convex soil layer, the first airbag 16 can expand or contract accordingly to fill the concave area, and at the same time form a depression in the convex area to match the irregular shape of the soil layer. The deformation of the first airbag 16 further indirectly adjusts the angle of the supporting straight plate 1 to maintain the stability of the overall structure.

[0053] When the first airbag 16 is compressed, the gas inside it will be transported to the first cavity 9 through the flexible hose 18 connected to it. During this process, when the first rotating shaft 6 rotates, the sealing cavity cover 17 is rotatably connected to it but does not rotate with it, thereby ensuring that the gas in the flexible hose 18 can enter the first cavity 9.

[0054] The above scheme has the following effects:

[0055] First, if the above scheme is not used, when the first rotating shaft 6 is gradually pulled out of the soil layer, there is still soil in the first cavity 9 that needs to be removed, and manual removal will increase the work intensity. After using the above scheme, when the first rotating shaft 6 is pulled out of the soil layer, the first airbag 16 is compressed by external pressure, and the gas inside it is then introduced into the first cavity 9. This process uses the pressure of the gas to effectively dredge and push the soil in the cavity, so that it can be discharged smoothly through the feed trough 10, thereby avoiding soil accumulation in the first cavity 9 and causing blockage.

[0056] Second, if the above scheme is not used, when the soil or other geothermal fluid uses its own natural flow to enter the first cavity 9 through the feed trough 10, it is difficult for the soil to enter the first cavity 9, and it will also cause blockage. By using the above scheme, the first airbag 16 is no longer compressed, and the gas in the first cavity 9 will be transmitted to the first airbag 16. At this time, the negative pressure generated in the first cavity 9 is used to suck the surrounding soil or geothermal heat into the cavity, and the pressure in the cavity is changed by changing the volume of the airbag, thereby achieving the suction of soil or geothermal heat.

[0057] It should be noted that: first, when the soil in the first cavity 9 is not needed, the above scheme can be used to remove the soil in the first cavity 9. Second, the part where the first fixing sleeve 15 is connected to the first airbag 16 can be equipped with a bearing on the outer surface of the first fixing sleeve 15, so that the first airbag 16 is not rotating and can move downward or upward through the first drill rod 11. Third, after the first drill rod 11 is inserted into the ground, since the first drill rod 11 is installed in the first airbag 16 and overlaps with the first airbag 16, the first airbag 16 will block the hole drilled by the first drill rod 11, so that no soil in the hole is output to the ground. If the first airbag 16 does not cover the hole drilled by the first drill rod 11, the diameter of the first drill rod 11 can be enlarged, which can be adjusted according to actual needs. Fourth, since the first airbag 16 is connected to the support straight plate 1, the first airbag 16 can slide on the support straight plate 1. Fifth, the length of the flexible hose 18 can be adjusted according to actual needs.

[0058] Furthermore, the first sliding frame 4 is internally threadedly connected with a second screw rod 19 , and a second motor 20 is installed at the upper end of the second screw rod 19 .

[0059] Adopting the above scheme: during use, when the first sliding frame 4 needs to move downward, when the output end of the second motor 20 drives the second screw rod 19 to rotate, since the second screw rod 19 and the first sliding frame 4 are threadedly connected, the second screw rod 19 will drive the first sliding frame 4 to move downward or upward.

[0060] It should be noted that the length of the second screw rod 19 may affect the downward or upward movement distance of the first sliding frame 4 , and may be adjusted according to actual needs.

[0061] Furthermore, a first gear 21 is fixedly connected to the outer surface of the first rotating shaft 6, the first gear 21 is located on the upper side of the supporting base plate 5, a second gear 22 is meshed on one side of the first gear 21, the axial portion of the second gear 22 is fixedly connected to a second rotating shaft 23, a third motor 24 is provided at one end of the second rotating shaft 23, and an output end of the third motor 24 is fixedly connected to the second rotating shaft 23.

[0062] The above scheme is adopted: when in use, when the first rotating shaft 6 needs to rotate, the output end of the third motor 24 drives the second rotating shaft 23 to rotate synchronously, and when the second rotating shaft 23 rotates, it will synchronously drive the second gear 22 to drive the first gear 21 to rotate synchronously. Due to the connection relationship between the first gear 21 and the first rotating shaft 6, when the first gear 21 rotates, it can synchronously drive the first rotating shaft 6 to rotate.

[0063] Furthermore, a first bracket 25 is installed on both sides of the support straight plate 1, a second bracket 26 is provided on the lower side of the first bracket 25, one side of the second bracket 26 is fixedly connected to the support base plate 5, the first screw rod 13 passes through the second bracket 26, the first drill rod 11 is located on the lower side of the second bracket 26, one side of the first motor 14 is fixedly connected to the first bracket 25, and one side of the first bracket 25 and the second bracket 26 are fixedly connected with a hand-held rod 27.

[0064] The above scheme is adopted: when in use, when the device needs to be moved, the device can be moved by manually holding the handle 27, and when the first motor 14 drives the first screw rod 13 to rotate, the first screw rod 13 rotates in the second bracket 26, thereby clamping the first screw rod 13.

[0065] Working principle of the present invention:

[0066] Before detecting the soil layer, first install the detection device above the target soil layer. If the ground is uneven, it needs to be manually leveled to ensure that the ground is flat. Next, use the support straight plate 1 and the support foot 2 to ensure the horizontal stability of the device in this area. Then, operate the first sliding frame 4 to move downward along the first slide 3, and the support base plate 5 will also descend synchronously. During the descent, the detection drilling assembly will rotate in the first circular hole. As the first sliding frame 4 continues to descend, the detection drilling assembly will contact the surface of the soil layer and begin to drill into the ground.

[0067] When the detection drilling assembly reaches the predetermined depth, the detection drilling assembly will transport the underground soil sample into the device for soil analysis. This process ensures that the detection work can adapt to different terrain conditions, thereby ensuring the accuracy and reliability of the detection.

[0068] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0069] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A geothermal detection device suitable for various terrains and soil layers, comprising a support straight plate (1), wherein two symmetrical support legs (2) are fixedly connected to the lower side of the support straight plate (1), characterized in that: The supporting straight plate (1) is provided with two symmetrical first slideways (3); A first sliding frame (4) is slidably connected inside the first slideway (3), a supporting base plate (5) is fixedly connected to one side of the first sliding frame (4), and a first circular hole is formed on the upper surface of the supporting base plate (5); A detection drilling assembly is installed in the first circular hole; The detection drilling assembly comprises a first rotating shaft (6), wherein the first rotating shaft (6) is installed in the first circular hole; A first spiral blade (7) is fixedly connected to the outer surface of the first rotating shaft (6), and the first spiral blade (7) is located at the lower side of the supporting bottom plate (5); A drill bit (8) is fixedly connected to the bottom end of the first rotating shaft (6); A first cavity (9) is provided in the first rotating shaft (6), a feed groove (10) is provided on the surface of the drill bit (8), and the first cavity (9) and the feed groove (10) are communicated with each other; First drill rods (11) are installed on both sides of the supporting straight plate (1), and the first drill rods (11) are arranged in a triangle; The outer surface of each of the first drill rods (11) is fixedly connected to a second spiral blade (12); the inside of each of the first drill rods (11) is threadedly connected to a first screw rod (13); and one end of each of the first screw rods (13) is mounted with a first motor (14); The outer surface of each of the first drill rods (11) is rotatably connected to a first fixing sleeve (15), and each of the first fixing sleeves (15) is sleeved on the outer surface of each of the first drill rods (11); A first air bag (16) is provided on the outer side of the first fixing sleeve (15), the first fixing sleeve (15) penetrates the first air bag (16), and the inner side of the first air bag (16) is slidably connected to the supporting straight plate (1); The upper end of the first rotating shaft (6) is rotatably connected to a sealing cavity cover (17); A flexible hose (18) is installed between the sealing cavity cover (17) and the first airbag (16), and the flexible hose (18) is connected to the first cavity (9); The upper side of the first airbag (16) is made of a hard material, and the lower side of the first airbag (16) is made of a rubber material.

2. A geothermal detection device applicable to various terrains and soil layers as claimed in claim 1, characterized in that: The first sliding frame (4) is internally threadedly connected to a second screw rod (19), and a second motor (20) is mounted on the upper end of the second screw rod (19).

3. A geothermal detection device applicable to various terrains and soil layers as claimed in claim 2, characterized in that: A first gear (21) is fixedly connected to the outer surface of the first rotating shaft (6); the first gear (21) is located on the upper side of the supporting base plate (5); a second gear (22) is meshed with one side of the first gear (21); a second rotating shaft (23) is fixedly connected to the axial center of the second gear (22); a third motor (24) is provided at one end of the second rotating shaft (23); an output end of the third motor (24) is fixedly connected to the second rotating shaft (23).

4. A geothermal detection device applicable to various terrains and soil layers as claimed in claim 3, characterized in that: First brackets (25) are installed on both sides of the support straight plate (1), and second brackets (26) are provided on the lower side of the first brackets (25). One side of the second bracket (26) is fixedly connected to the support bottom plate (5), the first screw rod (13) passes through the second bracket (26), the first drill rod (11) is located on the lower side of the second bracket (26), one side of the first motor (14) is fixedly connected to the first bracket (25), and one side of the first bracket (25) and the second bracket (26) are fixedly connected to a hand-held rod (27).

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