Environmental geological surveying and mapping auxiliary device

Abstract

The present application relates to a kind of environmental geology surveying and mapping auxiliary device, including multifunctional detection module, sample collection module, auxiliary support, wherein multifunctional detection module includes high-precision positioning submodule, geological radar submodule, spectral analysis submodule, sample collection module includes drill arm, drilling drive system, automatic depth following device, sample storage and identification system, drill arm bottom end is installed with core drill bit or soil sampler, drilling drive system is connected with the drive of drill arm, automatic depth following device includes hydraulic telescopic link, the bottom of the pressure plate of telescopic end is fixed with the limiting boss inserted in the top end of drill arm, limiting boss can follow drill arm axial downward displacement;Sample storage and identification system record sample's collection location, depth, time information;Auxiliary support provides the installation place of power equipment transmission, it is convenient to install the whole set of device in surveying and mapping target area quickly.The present application can accurately and quickly provide remote sensing feedback information and field sample for geology surveying and mapping.

Description

Technical Field

[0001] This invention relates to the field of geological surveying equipment technology, and specifically to an environmental geological surveying auxiliary device. Background Technology

[0002] In environmental geological mapping, workers often need to collect data, analyze samples, and create maps under complex and diverse terrain and environmental conditions. Traditional geological surveying and mapping auxiliary equipment has played a vital role in geological work over a long period. However, as geological exploration becomes deeper, broader, and more complex, and with increasing demands for accuracy, efficiency, and environmental protection, some shortcomings have gradually emerged, mainly in the following aspects:

[0003] In terms of technical performance, traditional equipment suffers from limitations in accuracy and resolution, failing to meet the high precision requirements of modern geological exploration. For instance, it often acquires only a limited range of geological parameters. Conventional drilling equipment, primarily used for core sampling, focuses on understanding rock lithology and stratigraphy, but has limited ability to acquire other crucial parameters such as geophysical properties and geochemical characteristics. This hinders geologists from comprehensively analyzing geological conditions and increases the difficulty of gaining a holistic understanding of geological bodies.

[0004] Insufficient deep exploration capabilities: As geological exploration expands into deeper areas, traditional equipment faces numerous challenges in deep exploration. For example, the depth and accuracy of deep strata exploration are significantly reduced. Although drilling equipment can directly obtain deep rock cores, the drilling depth is limited, and the costs are high and the efficiency is low, making it difficult to meet the needs of large-scale deep geological exploration.

[0005] In terms of work efficiency, data acquisition is slow, and the data acquisition process of some traditional geological exploration equipment is cumbersome and time-consuming. For example, some early field geological data acquisition equipment required manual operation and data recording, which was not only inefficient but also prone to human error. In large-scale geological mapping work, relying on traditional manual observation and recording methods to complete the survey of a region requires a significant amount of time and manpower.

[0006] Data processing and analysis lags behind: Data collected by traditional equipment often requires extensive manual processing and analysis indoors due to the limited functionality and outdated nature of the equipment. This process is not only time-consuming and labor-intensive, but also, due to limitations in data processing methods and tools, may fail to extract valuable information from massive amounts of data in a timely and effective manner. For example, for large amounts of data obtained from geophysical exploration, traditional manual drawing and simple data analysis methods are insufficient to quickly and accurately identify anomalies and geological patterns, thus delaying the progress of exploration work. Summary of the Invention

[0007] In view of this, the purpose of the present invention is to provide an environmental geological mapping auxiliary device to solve the problems in the prior art of environmental geological mapping, such as relatively simple survey information, insufficient sampling data, and large workload of manual recording, and can significantly improve the overall level of environmental geological mapping work.

[0008] This invention is achieved through the following technical solution:

[0009] An environmental geological mapping auxiliary device includes a multi-functional detection module, a sample acquisition module, and an auxiliary support. The multi-functional detection module comprises a high-precision positioning submodule, a ground-penetrating radar submodule, and a spectral analysis submodule. The high-precision positioning submodule is used for GPS positioning of the device. The ground-penetrating radar submodule can transmit and receive electromagnetic waves to detect geological structures and target objects at different underground depths. The spectral analysis submodule integrates a hyperspectral imager, capable of multi-band spectral scanning of ground targets. The sample acquisition module includes a drill arm, a drilling drive system, an automatic depth-following device, and a sample storage and labeling system. A core drill bit or soil sample is detachably mounted at the bottom of the drill arm. The soil sampler is connected to the drilling drive system via a transmission to allow the drilling arm to drill downwards. An automatic depth-following device includes a hydraulic telescopic rod and a pressure plate fixed to the telescopic end of the hydraulic telescopic rod. A limiting boss, axially slidingly fitted to the top of the drilling arm, is rotatably mounted on the bottom of the pressure plate and can move axially downwards with the drilling arm. A sample storage and labeling system includes a storage box and an electronic tag affixed to the outside of the storage box. The electronic tag records the sample collection location, depth, and time information. An auxiliary support is centrally mounted to the drilling drive system. Several vertically arranged drilling arms are rotatably mounted on the auxiliary support, all arranged in a circular array outside the drilling drive system.

[0010] Furthermore, the drilling drive system includes a motor, a drive wheel, and a driven wheel that surrounds and meshes with the drive wheel, the driven wheel being rotatably mounted on an auxiliary support; the drill arm includes several arm sections connected in series, each arm section having a lead screw that slides axially through the driven gear, the surface of the lead screw having a transmission groove along its length, the transmission groove having a sliding engagement with a guide key fixed to the shaft hole wall of the driven gear, and the threads on two arm sections that are inserted into each other being connected to each other; the auxiliary support also has a threaded seat fixed therethrough for the arm sections to threadedly pass through.

[0011] Furthermore, each boom section has a positioning post and a socket on both ends, which are coaxially arranged. The positioning posts of the two connected boom sections are inserted into the sockets, and the cross-section of the positioning post is rectangular.

[0012] Furthermore, the bottom of the limiting boss also has the positioning post.

[0013] Furthermore, the bottom of the auxiliary support is provided with several cleaning rings, each through which a drill arm passes. The inner wall of the cleaning ring has spray holes for spraying clean water or compressed air to clean the drill cuttings adhering to the drill arm.

[0014] Furthermore, the driving wheel is a circular gear disc, and the driven wheel is a cylindrical gear. The cylindrical gear and the circular gear disc are driven by several speed-changing gears meshing together. The speed-changing gears, the circular gear disc, and the cylindrical gear are all rotatably mounted inside the auxiliary support.

[0015] Furthermore, both the driving wheel and the driven wheel are worm gears, with the driving wheel being larger than the driven wheel. Several worm shafts arranged in a circular array are meshed on the outer side of the driving wheel. These worm shafts are rotatably mounted within an auxiliary support. A first telescopic column is coaxially fixed to the end of each worm shaft, and a section of worm gear is coaxially fixed to the end of the first telescopic column. The driven gear is rotatably mounted within a bearing housing, which is fixed to the end of a second telescopic column. The second telescopic column is parallel to the first telescopic column, and the two telescopic columns move synchronously, ensuring that the worm gear section and the driven wheel mounted on the two telescopic columns remain meshed at all times.

[0016] Furthermore, each of the two telescopic columns includes an outer tube and an inner column. The inner wall of the outer tube is provided with several guide grooves arranged in a ring array. Several guide sliders are fixed on the side wall of the inner column, and the guide sliders slide in cooperation with the guide grooves. The tube wall of the outer tube is provided with a strip-shaped screw hole, and the locking bolt passes through the strip-shaped screw hole and is fastened in the guide slider and the inner column.

[0017] Furthermore, the outer sleeve of the second telescopic column has an L-shaped structure, with one end perpendicular to the end face of the auxiliary support and the other end fixed to the bearing seat; the auxiliary support has a strip-shaped through hole that runs through the upper and lower end faces, and the strip-shaped through hole allows the bearing seat and the driven gear to move.

[0018] Furthermore, each of the auxiliary supports has a downward-protruding blind tube foot near its bottom edge. The hydraulic cylinder of the hydraulic telescopic rod is installed inside the blind tube foot, and an adjustment base is fixed to the bottom of the blind tube foot to support the auxiliary support.

[0019] The beneficial effects of this invention are as follows:

[0020] This environmental geological mapping auxiliary device, through the integration of currently mature high-precision positioning submodules, ground-penetrating radar submodules, and spectral analysis submodules, can intelligently, accurately, and timely acquire more comprehensive and accurate geological information, greatly improving the efficiency and accuracy of environmental geological mapping and providing reliable data support for subsequent geological research and environmental assessment.

[0021] Furthermore, the drill arm and automatic depth-following device of the sample acquisition module of this invention enable the maintenance of stability during long drill arm drilling while flexibly adjusting the sampling depth. Only one motor is needed to sample multiple points, and unlike traditional surveying and sampling equipment, the motor does not have to move downwards with the drill rod while driving its rotation, which significantly limits the motor's installation height and makes operation difficult. Axial pressure is applied via a trapezoidal thread screw drive, and the hydraulic telescopic rod, which straightens the drill arm and maintains stability, can be achieved using a low-pressure cylinder, making it safer. In other words, this invention greatly improves work efficiency, enabling multi-point synchronous sampling, flexible adjustment of the concentrated sampling area size, significantly shortening the surveying cycle, and improving work efficiency and sampling accuracy.

[0022] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0023] Figure 1 This is the front view of the present invention;

[0024] Figure 2 A diagram showing a transmission structure between a driving wheel and a driven wheel;

[0025] Figure 3 This is another transmission design diagram for the driving wheel and the driven wheel;

[0026] Figure 4 This is a partial structural sectional view of the expansion joint;

[0027] Figure 5 This is a schematic diagram of a cross-section of an expansion joint;

[0028] Figure 6 This is a simplified structural diagram of the auxiliary support when using a worm gear drive.

[0029] Figure 7 A schematic diagram of installing the worm gear section for the second telescopic column;

[0030] Figure 8 This is a schematic diagram of a cross-section of a cleaning ring.

[0031] In the diagram: 1. Auxiliary support; 2. Drill arm; 201. Arm section; 20101. Transmission groove; 3. Core drill; 4. Hydraulic telescopic rod; 5. Pressure plate; 6. Limiting boss; 7. Positioning post; 8. Motor; 9. Drive wheel; 9a. Circular gear disc; 9b. Main worm gear; 10. Driven wheel; 10a. Cylindrical gear; 10b. Driven worm gear; 11. Variable speed gear; 12. Cleaning ring; 13. Blind tube foot; 14. Adjustment base; 15. Worm shaft; 16. First telescopic post; 17. Second telescopic post; 18. Worm section; 19. Bearing seat; 20. Outer sleeve; 21. Inner insert post; 22. Guide slider; 23. Locking bolt; 24. Guide groove; 25. Strip screw hole; 26. Threaded seat sleeve. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0034] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0035] This invention provides a technical solution: an environmental geological mapping auxiliary device, mainly comprising the following parts:

[0036] Firstly, it features a multi-functional detection module, specifically including a high-precision positioning submodule: employing advanced GNSS and INS (Inertial Navigation System) technologies, it can continuously provide accurate location information even in areas where satellite signals are blocked, ensuring centimeter-level positioning accuracy. Simultaneously, it is equipped with a high-precision barometer for real-time altitude measurement, further improving the accuracy of three-dimensional positioning. This detection module also includes a ground-penetrating radar submodule, equipped with high-resolution ground-penetrating radar capable of emitting and receiving electromagnetic waves to detect geological structures and target objects at different depths. Through analysis of reflected waves, it can clearly identify stratigraphic layers, underground cavities, rock distribution, and other information, with a detection depth of tens of meters. It also features a spectral analysis submodule, integrating a hyperspectral imager, capable of multi-band spectral scanning of ground targets; by analyzing the reflection characteristics of different substances in specific spectral bands, it can quickly and accurately identify rock types, soil composition, and vegetation cover, providing rich geochemical information for geological mapping.

[0037] Secondly, a sample collection module is provided, combined with Figure 1 As shown, its specific structure is as follows: It includes a drill arm 2, which is made of high-strength, lightweight material and serves as a sampling arm. The end of the drill arm 2 is equipped with various sampling tools, such as core drill bits and soil samplers, which can be replaced according to different sampling needs. Furthermore, this module features an automatic depth-following device, specifically including a hydraulic telescopic rod 4 and a pressure plate 5 fixed to the telescopic end of the hydraulic telescopic rod 4. A limiting boss 6 is rotatably installed at the bottom of the pressure plate 5. This limiting boss 6 is axially and slidably inserted into a groove at the top of the drill arm 2. Under the action of the hydraulic telescopic rod, the limiting boss 6 can automatically move axially downwards along with the drill arm 2. That is, in this embodiment, the limiting boss 6 is driven by the hydraulic telescopic rod 4, allowing it to follow the top of the drill arm 2 without separating, thus maintaining its vertical stability when replacing or extending the drill arm 2 and preventing the upper part from swinging during drilling. This design allows for automatic adjustment of the sampling depth according to geological conditions, ensuring accurate sample collection at different depths. Meanwhile, a pressure sensor can be installed on the arm section between the drill arm 2 and the core drill 3, which serves as the drill bit, so that the sampling resistance can be monitored in real time during the sampling process, avoiding damage to the sampling tool due to excessive force.

[0038] Furthermore, this embodiment also includes a dedicated sample storage and labeling system. The collected samples are automatically placed into a sample storage box with an electronic tag. The electronic tag records detailed information such as the sample collection location, depth, and time, which facilitates subsequent sample management and analysis.

[0039] Furthermore, this embodiment includes an auxiliary support 1 used as a carrier, such as... Figure 1The auxiliary support 1 is used to install the drilling drive system in the center, and several vertically arranged drill arms 2 are rotatably mounted on the auxiliary support 1. All drill arms 2 are arranged in a circular array outside the drilling drive system to simultaneously drill the predetermined area in one go, so as to obtain geological exploration samples more comprehensively and accurately. Of course, if necessary, some of these drill arms 2 can be removed without affecting the sampling of the remaining drill arms 2.

[0040] In this embodiment, as Figure 1 Its drilling drive system includes a motor 8, a drive wheel 9, and driven wheels 10 surrounding and meshing with the drive wheel 9. The driven wheels 10 are rotatably mounted on the auxiliary support 1, and the drive wheel 9 drives all the driven wheels 10 to rotate synchronously. Specifically, as Figure 1 The drill arm 2 comprises several arm sections 201 connected in series. Each arm section 201 is a lead screw that slides axially through a driven gear. Thus, the drill arm 2 is composed of several lead screws connected in series, achieving an adjustable length. During drilling, the sections can be added gradually. In specific manufacturing, lead screws with trapezoidal threads are preferred. Furthermore, as... Figure 1 Furthermore, a transmission groove 20101 needs to be formed along the length of the lead screw surface. This transmission groove 20101 slides into contact with a guide key fixed to the shaft hole wall of the driven gear. That is, when the driven gear rotates, the guide key drives the lead screw to rotate. Moreover, the threads on the two interlocking arm sections 201 are connected to each other, meaning the threads can smoothly transition and form a continuously meshing threaded pair. Based on the above structural design, a threaded sleeve 26 must also be fixed on the auxiliary support 1 for the threaded arm section 201 to pass through. The threaded sleeve 26 mainly combines the functions of the guide key and the transmission groove 20101 to drive the drill arm 2 to move downward, allowing the drill arm 2 to drill axially to the corresponding depth for sampling.

[0041] In this embodiment, as Figure 1 As shown, each arm segment 201 has a positioning post 7 and a receiving slot coaxially at both ends. The positioning posts 7 of the two connected arm segments 201 are inserted into the receiving slots, and the cross-section of the positioning post 7 is rectangular. In specific manufacturing, the bottom of the limiting boss 6 can also have a positioning post 7 to control the stability of the top arm segment 201.

[0042] To allow drill arm 2 to retract from the drilling operation, the drill cuttings on drill arm 2 must be cleaned and removed, such as... Figure 1 As shown, several cleaning rings 12 are also provided at the bottom of the auxiliary support 1. These cleaning rings 12 are all connected to a water pump or an air compressor. A drill arm 2 passes freely through each cleaning ring 12. Figure 8As shown, there are spray holes on the inner wall of the cleaning ring 12. These spray holes are used to spray clean water or compressed air to clean the drill cuttings adhering to the drill arm 2. If necessary, lubricating oil or rust-preventive oil or other protective liquids can be added to the clean water.

[0043] In this embodiment, the transmission design of the driving gear and the driven gear is mainly implemented in two ways:

[0044] The first design: such as Figures 1-2 As shown, the driving gear 9 is a circular gear disc 9a, and the driven gear 10 is a cylindrical gear 10a; that is, both are circular gear structures. This is done to increase the distribution area of ​​the drill arm 2, or in other words, to improve speed regulation. Figure 2 As shown, the cylindrical gear 10a and the circular gear disk 9a are driven by several speed-changing gears 11. The speed-changing gears 11, the circular gear disk 9a, and the cylindrical gear 10a are all rotatably mounted inside the auxiliary support 1.

[0045] The second design aims to flexibly adjust the distribution of sampling sites, specifically as follows: Figure 3 As shown, both the driving wheel 9 and the driven wheel 10 are worm gears, and the driving wheel 9 is larger than the driven wheel 10. That is, the driving wheel 9 is the master worm gear 9b, and the driven wheel 10 is the driven worm gear 10b. Several worm shafts 15 arranged in a circular array are meshed on the outer side of the master worm gear 9b. The worm shafts 15 are rotatably mounted inside or outside the auxiliary support 1. A first telescopic column 16 is coaxially fixed to the end of the worm shaft 15, and a section of worm 18 is coaxially fixed to the end of the first telescopic column 16. (See also...) Figure 7 The worm gear 10b is rotatably mounted in the bearing housing 19, and the bearing housing 19 is fixed to the end of the second telescopic column 17, which is fixedly mounted on the auxiliary support 1. It is also necessary to ensure that the second telescopic column 17 in each pair of telescopic columns is parallel to the first telescopic column 16, and that the two telescopic columns move synchronously. This ensures that the worm section 18 mounted on the first telescopic column 16 and the worm gear 10b mounted on the second telescopic column 17 remain engaged at all times, allowing for adjustment to any position and flexible adjustment of the sampling area size and sampling point interval.

[0046] In this embodiment, as Figure 4As shown, each of the two telescopic columns includes an outer tube 20 and an inner insert 21. The inner wall of the outer tube 20 is provided with several guide grooves 24 arranged in a ring array. Several guide sliders 22 are fixed to the side wall of the inner insert 21, and the guide sliders 22 slide in contact with the guide grooves 24 one by one. A strip-shaped screw hole 25 is provided on the wall of the outer tube 20. The locking bolt 23 passes through the strip-shaped screw hole 25 and is fastened in the guide slider 22 and the inner insert 21, thereby locking and fixing them. In use, when the size of the sampling area needs to be adjusted, the inner insert 21 of each column can be pulled out by the same length. Scale lines can be drawn on the inner insert 21. Alternatively, in practice, due to the meshing of the worm gear, the pulled-out length of the inner insert 21 of the two telescopic columns will also adaptively maintain consistency to a certain extent.

[0047] Specifically, during installation, such as Figure 7 As shown, in this embodiment, the outer sleeve 20 of the second telescopic column 17 has an L-shaped structure, with one end perpendicular to the end face of the auxiliary support 1, and the other end fixed to the bearing seat 19. Specifically, a set of bearing seats 19 can be provided to install two bearings. To accommodate the moving design of the drill arm 2, it can be configured as follows: Figure 6 As shown, the auxiliary support 1 has a strip-shaped through hole 101 extending through the upper and lower end faces. The strip-shaped through hole 101 allows the bearing housing 19 and the driven gear to move, thus enabling the drill arm 2 to be rotatably installed even when its position can be flexibly changed. Finally, to facilitate installation and ensure the load-bearing capacity and stability of the entire device during drilling, as... Figure 1 As shown, at the bottom edge of the auxiliary support 1, each has a downward-protruding blind pipe foot 13. A hydraulic cylinder for the hydraulic telescopic rod 4 is installed inside the blind pipe foot 13, and an adjusting base 14 is fixed to the bottom of the blind pipe foot 13 to support the auxiliary support 1 and firmly install the device. This surveying auxiliary device adopts the aforementioned drill arm 2 drive structure, which allows for simultaneous sampling with a single high-power motor 8. This avoids the shortcomings of traditional methods where multiple motors 8 are required for multiple sampling points when the drill arm 2 is directly connected to the motor 8. Furthermore, to keep the drill arm 2 in operation, it does not need to move the motor 8 vertically along with it, unlike existing equipment. This greatly simplifies the installation and wiring of the motor 8.

[0048] In the above description of the present invention, it should be noted that the terms "one side," "the other side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is conventionally placed during use. These terms are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0049] Furthermore, terms such as "identical" do not imply that components must be absolutely identical; minor differences are permissible. The term "perpendicular" simply means that the positional relationship between components is more perpendicular than "parallel," not that the structure must be perfectly perpendicular; a slight tilt is acceptable.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An environmental geological mapping auxiliary device, characterized in that: It includes a multi-functional detection module, a sample acquisition module, and an auxiliary support (1), wherein, The multi-functional detection module includes a high-precision positioning submodule, a ground-penetrating radar submodule, and a spectral analysis submodule. The high-precision positioning submodule is used for GPS positioning of the device; the ground-penetrating radar submodule can transmit and receive electromagnetic waves to detect geological structures and target objects at different depths underground; the spectral analysis submodule integrates a hyperspectral imager, which can perform multi-band spectral scanning of ground targets. The sample collection module includes a drill arm (2), a drilling drive system, an automatic depth following device, and a sample storage and labeling system. A core drill bit or soil sampler is detachably installed at the bottom end of the drill arm (2). The drilling drive system is connected to the drill arm (2) in a transmission manner, and the drill arm (2) drills downwards. The automatic depth following device includes a hydraulic telescopic rod (4) and a pressure plate (5) fixed to the telescopic end of the hydraulic telescopic rod (4). A limiting boss (6) is rotatably installed at the bottom of the pressure plate (5). The bottom end of the limiting boss (6) is axially slidably inserted into the top end of the drill arm (2), and the limiting boss (6) can move axially downwards with the drill arm (2). The sample storage and labeling system includes a storage box and an electronic tag attached to the outside of the storage box. The electronic tag records the sample collection location, depth, and time information. The auxiliary support (1) is used to install the drilling drive system in the center. Several vertically arranged drill arms (2) are rotatably installed on the auxiliary support (1). All drill arms (2) are arranged in a ring array outside the drilling drive system. The drilling drive system includes a motor (8), a drive wheel (9), and a driven wheel (10) that surrounds and meshes with the drive wheel (9). The driven wheel (10) is rotatably mounted on an auxiliary support (1). The drill arm (2) includes several arm sections (201) connected in series. Each arm section (201) is a lead screw that slides through the driven gear in an axial sliding fit. The surface of the lead screw has a transmission groove (20101) along its length. The transmission groove (20101) slides into a guide key fixed to the shaft hole wall of the driven gear. The threads on the two arm sections (201) that are inserted into each other are connected to each other. The auxiliary support (1) is also fixed with a threaded sleeve (26) through which the arm section (201) passes in a threaded fit. Both the driving wheel (9) and the driven wheel (10) are worm gears, and the driving wheel (9) is larger than the driven wheel (10). Several worm shafts (15) arranged in a ring are meshed on the outside of the driving wheel (9). The worm shafts (15) are rotatably installed in the auxiliary support (1). The end of the worm shaft (15) is coaxially fixed with a first telescopic column (16). The end of the first telescopic column (16) is coaxially fixed with a section of worm (18). The driven gear is rotatably installed in the bearing seat (19). The bearing seat (19) is fixed to the end of the second telescopic column (17). The second telescopic column (17) is parallel to the first telescopic column (16). The two telescopic columns move synchronously to extend and retract, so that the worm section (18) and the driven wheel (10) installed on the two telescopic columns respectively always remain meshed.

2. The environmental geological mapping auxiliary device according to claim 1, characterized in that: Each arm section (201) has a positioning post (7) and a socket on both ends, respectively. The positioning posts (7) of the two connected arm sections (201) are inserted into the socket, and the cross-section of the positioning post (7) is rectangular.

3. The environmental geological mapping auxiliary device according to claim 2, characterized in that: The bottom of the limiting boss (6) also has the positioning post (7).

4. The environmental geological mapping auxiliary device according to claim 1, characterized in that: The bottom end of the auxiliary support (1) is also provided with several cleaning rings (12), each of which is through which a drill arm (2) passes. The inner wall of the cleaning ring (12) has a spray hole, which is used to spray out clean water or compressed air to clean the drill cuttings adhering to the drill arm (2).

5. The environmental geological mapping auxiliary device according to claim 1, characterized in that: The driving wheel (9) is a circular gear disc (9a), and the driven wheel (10) is a cylindrical gear (10a). The cylindrical gear (10a) and the circular gear disc (9a) are driven by meshing through several speed-changing gears (11). The speed-changing gears (11), the circular gear disc (9a), and the cylindrical gear (10a) are all rotatably installed inside the auxiliary support (1).

6. The environmental geological mapping auxiliary device according to claim 1, characterized in that: Each of the two telescopic columns includes an outer tube (20) and an inner column (21). The inner wall of the outer tube (20) is provided with several guide grooves (24) arranged in a ring array. The side wall of the inner column (21) is fixed with several guide sliders (22), and the guide sliders (22) slide with the guide grooves (24). The tube wall of the outer tube (20) is provided with a strip screw hole (25). The locking bolt (23) passes through the strip screw hole (25) and is fastened in the guide slider (22) and the inner column (21).

7. The environmental geological mapping auxiliary device according to claim 1, characterized in that: The outer sleeve (20) of the second telescopic column (17) has an L-shaped structure, with one end perpendicular to the end face of the auxiliary support (1) and the other end fixed to the bearing seat (19); the auxiliary support (1) has a strip-shaped through hole (101) that runs through the upper and lower end faces, and the strip-shaped through hole (101) allows the bearing seat (19) and the driven gear to move.

8. The environmental geological mapping auxiliary device according to claim 1, characterized in that: Each of the auxiliary supports (1) has a downward-protruding blind tube foot (13) at the bottom edge. The hydraulic cylinder of the hydraulic telescopic rod (4) is installed inside the blind tube foot (13), and the bottom end of the blind tube foot (13) is fixed with an adjustment base (14) to support the auxiliary support (1).

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