Geological disaster reconnaissance sampling device

Abstract

The present application relates to the technical field of geological disaster investigation, and particularly relates to a geological disaster investigation sampling device, which comprises a lifting support, a first mounting table and a second mounting table are respectively slidably installed in the lifting support, and the first mounting table and the second mounting table are fixedly connected, a jacking cylinder is fixedly installed on the first mounting table, a rotating disc is rotatably installed at the bottom of the second mounting table, a plurality of storage and taking integrated mechanisms are installed at the bottom of the rotating disc, a first motor for driving the rotating disc to rotate is fixedly installed at the top of the second mounting table, and when the jacking cylinder jacks up the storage and taking integrated mechanism, the storage and taking integrated mechanism penetrates into a target soil layer to obtain and automatically save part of soil layer samples. The present application adopts a vertical penetration sampling mode, directly penetrates into a target soil layer through a sampling tube to obtain samples, changes a sampling mode to improve the purity of obtained samples, and avoids the problem of reduced purity of obtained samples caused by mixing of upper and lower soil layers due to stirring of a spiral drill bit in the prior art.

Description

Technical Field

[0001] This invention relates to the field of geological disaster investigation technology, specifically to a geological disaster survey and sampling device. Background Technology

[0002] Geological hazard investigation is a fundamental task that involves systematically surveying the geological environment and hazard characteristics to identify the risks of geological hazards such as landslides, mudslides, and debris flows. The most common method used in geological environment surveys is soil sampling. However, current soil sampling methods require multiple repeated sampling, which is not only cumbersome but also leads to mixing of samples, resulting in a certain degree of error in the geological survey results.

[0003] Chinese invention patent CN117109977B discloses a geological disaster survey and sampling device, including a support base and a telescopic rod. The telescopic rod extends and retracts under tension. The bottom end of the telescopic rod is fixedly connected to the support base, and the top end of the telescopic rod is fixedly connected to an installation component. A protective component is fixedly connected to the installation component away from the support base. A pressing frame is fixedly connected to the top of the protective component. A sampling rod is rotatably connected to the inner surface of the protective component. A collection component is fixedly connected to the outer surface of the sampling rod, and a cleaning component is rotatably connected to the outer surface of the collection component. The support base guides the movement of the installation component. When the collection component moves with the sampling rod, it contacts the cleaning component, allowing the cleaning component to clean the soil adhering to the surface of the collection component, avoiding soil residue from affecting reuse and thus improving the quality of soil sampling.

[0004] However, the above technical solution still has shortcomings: the patent uses a spiral excavation method to excavate the soil, which causes the upper soil to mix with the lower soil under the spiral agitation of the drill bit and adhere to the tunnel wall. When the mixed soil adhering to the tunnel wall is scraped as an analysis sample, it is very easy for the lower soil to be mixed with the upper soil, which will lead to errors in the geological survey results. Summary of the Invention

[0005] The purpose of this invention is to provide a geological disaster survey and sampling device to solve the problems in the prior art.

[0006] To solve the above-mentioned technical problems, the present invention specifically provides the following technical solution: A geological disaster survey and sampling device includes a lifting support. A first mounting platform and a second mounting platform are slidably installed inside the lifting support and are fixedly connected. A top-support cylinder is fixedly installed on the first mounting platform. A turntable is rotatably installed at the bottom of the second mounting platform. Multiple integrated storage and retrieval mechanisms are installed at the bottom of the turntable. Each integrated storage and retrieval mechanism includes a sampling component and a sample storage component. A first motor for driving the turntable to rotate is fixedly installed on the top of the second mounting platform. When the top-support cylinder supports the sampling component, the sampling component penetrates the target soil layer to obtain a soil sample and automatically saves the soil sample in conjunction with the sample storage component.

[0007] Based on a preferred embodiment of a geological disaster survey and sampling device, the sampling component includes an extension bracket slidably installed in a turntable, a passage groove for the extension bracket to slide in the turntable, a sampling tube installed at the bottom of the extension bracket, and an elastic support component for driving the sampling tube to reset in the passage groove.

[0008] Based on a preferred embodiment of a geological disaster survey sampling device, a cutting steel strip is fixedly connected to the end of the sampling tube. A combined sliding groove is formed on the outer wall of the sampling tube, which includes a straight groove and a spiral groove, and the spiral groove communicates with the straight groove. A strip plate is fixedly installed on the outer periphery of the turntable, and a collar is fixedly connected to the bottom of the strip plate. A ball for cooperating with the combined sliding groove is fixedly installed on the inner wall of the collar. The sampling tube is hinged to the extension bracket through a sample storage assembly. When the top support cylinder pushes the sampling tube forward through the collar, the ball slides along the combined sliding groove and drives the sampling tube to deflect within the sample storage assembly.

[0009] Based on a preferred embodiment of a geological disaster survey and sampling device, the elastic support assembly includes a crossbar fixedly installed in a passageway, a spring sleeved on the outside of the crossbar, the two ends of the spring respectively abutting against the side wall of the extension bracket and the side wall of the passageway, and the extension bracket slidably sleeved on the outside of the crossbar.

[0010] Based on a preferred embodiment of a geological disaster exploration and sampling device, the sample storage assembly includes a sliding sleeve rotatably fitted onto the outer wall of a sampling tube. A rotating rod is fixedly connected to the outer wall of the sliding sleeve. The bottom of the extension bracket is hinged to the sliding sleeve via the rotating rod. A rubber ring for limiting the sliding sleeve is fixedly installed on the outer wall of the sampling tube. A weight block is fixedly fitted onto the outer side of the end of the sampling tube near the top support cylinder. A pull ring is fixedly connected to the outside of the weight block. A hook seat for engaging the pull ring is fixedly connected to the bottom of the turntable.

[0011] Based on a preferred embodiment of a geological disaster survey and sampling device, the bottom of the hook base includes a base body and a torsion spring rod, and a hook claw is fixedly connected to the outside of the torsion spring rod, and the hook claw can hook a pull ring.

[0012] Based on a preferred embodiment of a geological disaster survey and sampling device, the lifting support includes a top plate and a bottom plate. A guide rod is fixedly connected to the top of the bottom plate, and the top of the guide rod is fixedly connected to the bottom of the top plate. A screw is rotatably connected to the top of the bottom plate, and a receiving gear is fixedly connected through the top of the screw. A drive gear is rotatably connected inside the top plate, and the drive gear meshes with the receiving gear. A second motor is fixedly installed on the top of the top plate, and the output end of the second motor extends into the top plate and is fixedly connected to the drive gear. The same end of the first mounting platform and the second mounting platform are slidably sleeved on the guide rod, and the other end is matched with the screw.

[0013] Compared with the prior art, the present invention has the following advantages: 1. This invention adopts a vertical piercing sampling method, which obtains samples by directly piercing the target soil layer through a sampling tube. By changing the sampling method, the purity of the obtained samples is improved, avoiding the problem of reduced sample purity caused by the mixing of upper and lower soil layers due to the agitation of the auger bit in the existing technology.

[0014] 2. This invention uses a lifting support to precisely control the sampling depth. Combined with the multi-station design of the turntable, it can independently sample soil layers at different depths within the same exploration hole, avoiding cross-contamination of samples and improving the accuracy of stratified data.

[0015] 3. The present invention adopts a rotary cutting design of cutting steel bar. During the insertion / extraction of the sampling tube, the two rotary cutting actions effectively sever the adhesion between the sample and the surrounding soil, significantly improving the retention rate of the sample in the sampling tube. Attached Figure Description

[0016] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the present invention without the lifting bracket; Figure 3 for Figure 2 A bottom view; Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 for Figure 3Enlarged view of point B in the middle; Figure 6 for Figure 4 Enlarged view of point C in the middle; Figure 7 This is a three-dimensional structural diagram of the sampling tube in this invention; Figure 8 for Figure 2 Enlarged view of point D in the middle; Figure 9 This is a schematic diagram of the top structure of the lifting bracket in this invention.

[0018] In the diagram: 1. Lifting bracket; 2. First mounting platform; 3. Second mounting platform; 4. Top support cylinder; 5. Turntable; 6. First motor; 7. Extension bracket; 8. Through slot; 9. Sampling tube; 10. Cutting steel strip; 11. Straight slot; 12. Spiral slot; 13. Strip plate; 14. Ring; 15. Ball; 16. Crossbar; 17. Spring; 18. Sliding sleeve; 19. Rotating rod; 20. Rubber ring; 21. Weight block; 22. Pull ring; 23. Hook seat; 24. Torsion spring rod; 25. Hook claw. Detailed Implementation

[0019] 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. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] The concepts involved in this application will first be described with reference to the accompanying drawings. It should be noted that the following descriptions of various concepts are only for the purpose of making the content of this application easier to understand and do not constitute a limitation on the scope of protection of this application; furthermore, the embodiments and features in the embodiments of this application can be combined with each other unless otherwise specified. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] Example like Figures 1 to 9As shown, the present invention provides a geological disaster survey and sampling device, including a lifting support 1. A first mounting platform 2 and a second mounting platform 3 are slidably installed inside the lifting support 1, and the first mounting platform 2 and the second mounting platform 3 are fixedly connected. A top support cylinder 4 is fixedly installed on the first mounting platform 2. A turntable 5 is rotatably installed on the bottom of the second mounting platform 3. Multiple storage and retrieval integrated mechanisms are installed on the bottom of the turntable 5. The storage and retrieval integrated mechanism includes a sampling component and a sample storage component. A first motor 6 for driving the turntable 5 to rotate is fixedly installed on the top of the second mounting platform 3. When the top support cylinder 4 supports the sampling component, the sampling component penetrates into the target soil layer to obtain a soil sample and automatically saves the soil sample in conjunction with the sample storage component.

[0022] As a further explanation of this embodiment of the invention, there are various methods in the prior art to excavate an exploration tunnel in the soil. Therefore, the excavation method of the exploration tunnel will not be described in detail. After the exploration tunnel is excavated, the device is placed into the entrance of the exploration tunnel to start the soil sampling operation. The specific workflow is as follows: In this embodiment, the lifting support 1 is placed and fixed along the entrance of the exploration tunnel. In order to improve the stability of the lifting support 1, the depth of the excavated exploration tunnel is approximately the same as the stroke length of the lifting support 1 during the soil excavation operation, so as to ensure that the lifting support 1 can be stably erected in the exploration tunnel. Once the lifting support 1 is stably installed, the first mounting platform 2 and the second mounting platform 3 are lowered to the target soil depth using the lifting support 1. The top support cylinder 4, in conjunction with the sampling assembly, penetrates the soil to collect soil samples. The soil samples are then stored using the sample storage assembly, completing a single soil sampling operation. After a single soil sample collection operation is completed, the first motor 6 drives the turntable 5 to rotate, causing the integrated storage and retrieval mechanism containing the soil samples to deviate from the top support cylinder 4. The next idle integrated storage and retrieval mechanism is then rotated to the position of the top support cylinder 4. The lifting support 1 is then used to adjust the first mounting platform 2 and the second mounting platform 3 to the target soil depth, allowing the top support cylinder 4 to be activated to collect and store the soil samples. This process is repeated until samples from all target soil depths are collected. The lifting support 1 is then removed from the exploration tunnel, and different samples from each integrated storage and retrieval mechanism are collected. Based on the analysis results of the samples, relevant geological environmental data can be accurately obtained. All electrical devices used in the above sampling process are powered by a portable power supply and corresponding wiring (not shown in the figure).

[0023] As an advanced solution for geological disaster exploration and sampling equipment, the sampling component includes an extension bracket 7 that is slidably installed in a turntable 5. A through groove 8 is provided in the turntable 5 for the extension bracket 7 to slide. A sampling tube 9 is installed at the bottom of the extension bracket 7. An elastic support component is provided in the through groove 8 for driving the sampling tube 9 to reset.

[0024] As a further explanation of this embodiment of the invention, the basic principle of the sampling assembly is as follows: the sampling tube 9 is hoisted to a position coaxial with the top-support cylinder 4 via the extension bracket 7. The output end of the top-support cylinder 4 supports the sampling tube 9 and pushes it laterally into the soil. During the process of the end of the sampling tube 9 penetrating the soil, some soil is squeezed into the sampling tube 9, completing the soil sample collection. After sampling is completed, the top-support cylinder 4 retracts and resets, and the sampling tube 9 is pushed back into place by the elastic top-support assembly, causing the sampling tube 9 to detach from the soil layer and reset. Compared with scraping the mixed soil adhering to the cave wall, the soil sample obtained by the sampling method of laterally penetrating the soil through the sampling tube 9 can more accurately reflect the actual geological environment of the soil layer at that depth.

[0025] To further improve the accuracy of soil samples obtained from sampling tube 9, when removing soil samples from sampling tube 9, only the sample obtained from the front end of sampling tube 9 should be taken out to avoid the mixed soil sample at the end of sampling tube 9 reducing the accuracy of geological environmental data acquisition. Alternatively, the end of sampling tube 9 near the top support cylinder 4 can be set as an openable and closable cap. When removing soil samples from sampling tube 9, the cap at the end of sampling tube 9 should be opened first to pour out the mixed soil sampled at the end of sampling tube 9, which effectively improves the accuracy of geological environmental data obtained from soil samples.

[0026] As an advanced solution for geological disaster exploration and sampling equipment, the end of the sampling tube 9 is fixedly connected to a cutting steel strip 10. The outer wall of the sampling tube 9 is provided with a combined sliding groove, which includes a straight groove 11 and a spiral groove 12, and the spiral groove 12 is connected to the straight groove 11. A strip plate 13 is fixedly installed on the outer periphery of the turntable 5. A collar 14 is fixedly connected to the bottom of the strip plate 13. A ball 15 for matching the combined sliding groove is fixedly installed on the inner wall of the collar 14. The sampling tube 9 is hinged to the extension bracket 7 through the sample storage component. When the top support cylinder 4 pushes the sampling tube 9 forward through the collar 14, the ball 15 slides along the combined sliding groove and drives the sampling tube 9 to deflect within the sample storage component.

[0027] As a further explanation of this embodiment of the invention, under the conventional cooperation of the sampling tube 9 and the top support assembly, when the sampling tube 9 is extracted from the soil, some soil may remain in the sampling tube 9, while most of the soil sample will not be extracted from the soil along with the sampling tube 9. Therefore, to avoid the sampling tube 9 obtaining too little sample, a cutting steel strip 10 is added to the end of the sampling tube 9, so that when the sampling tube 9 is inserted into the soil, the sample soil entering the sampling tube 9 is first cut and crushed, and then the sphere 15 in the collar 14 cooperates with the combined sliding groove to make the sample... As the sampling tube 9 is inserted into the soil, it deflects. The cutting steel bar 10 follows the deflection of the sampling tube 9 to agitate and cut, severing the connection between the sample soil inside the sampling tube 9 and other soil, thus severing the sample soil. When the sampling tube 9 is pulled out of the soil, the ball 15 returns to its original position along the combined slide and drives the sampling tube 9 to rotate in the opposite direction again. The cutting steel bar 10 once again severs the connection between the sample soil and other soil. After multiple cuts, the sample soil retracts along with the sampling tube 9, thereby improving the retention rate of the sample soil inside the sampling tube 9.

[0028] In this embodiment, the end of the sampling tube 9 is supported by the collar 14, thereby improving the stability of the sampling tube 9 when it penetrates the soil.

[0029] As an advanced solution for geological disaster exploration and sampling equipment, the elastic support assembly includes a crossbar 16 fixedly installed in the passageway 8, a spring 17 sleeved on the outside of the crossbar 16, the two ends of the spring 17 respectively abutting against the side wall of the extension bracket 7 and the side wall of the passageway 8, and the extension bracket 7 slidably sleeved on the outside of the crossbar 16.

[0030] As a further explanation of this embodiment of the invention, after the sampling tube 9 is driven forward by the top support cylinder 4 and penetrates the soil, the top support cylinder 4 resets, and the sampling tube 9 cannot retract and reset with the top support cylinder 4. This allows the sampling tube 9 inserted in the soil to affect the lifting and lowering of the first mounting platform 2. Therefore, a crossbar 16 and a spring 17 are added in the passage groove 8. After sampling is completed, the spring 17 supports the extension bracket 7 and causes the sampling tube 9 to detach from the soil and reset.

[0031] As an advanced solution for geological disaster exploration and sampling equipment, the sample storage component includes a sliding sleeve 18 rotatably mounted on the outer wall of the sampling tube 9. A rotating rod 19 is fixedly connected to the outer wall of the sliding sleeve 18. The bottom of the extension bracket 7 is hinged to the sliding sleeve 18 through the rotating rod 19. A rubber ring 20 for limiting the sliding sleeve 18 is fixedly installed on the outer wall of the sampling tube 9. A weight block 21 is fixedly mounted on the outer side of the end of the sampling tube 9 near the top support cylinder 4. A pull ring 22 is fixedly connected to the outside of the weight block 21. A hook seat 23 for cooperating with the pull ring 22 is fixedly connected to the bottom of the turntable 5.

[0032] As a further explanation of this embodiment of the invention, by hinged to the sliding sleeve 18 and the extension bracket 7, the sampling tube 9 can rotate within the sliding sleeve 18 while rotating along the circumferential direction of the rotating rod 19. Therefore, the rotatable connection between the sliding sleeve 18 and the sampling tube 9 makes the sampling tube 9 more flexible. The rubber ring 20 restricts the position of the sliding sleeve 18 on the sampling tube 9, so that the sliding sleeve 18 will not slide arbitrarily on the outer wall of the sampling tube 9.

[0033] Furthermore, a weight block 21 is installed at the end of the sampling tube 9 near the top support cylinder 4. Through the hinge of the rotating rod 19 and the extension bracket 7, the sampling tube 9 will deflect towards the end with the weight block 21 after sampling, causing the end of the cutting steel strip 10 to open upwards. This is similar to the lever principle of a seesaw, causing the center of gravity of the sampling tube 9 to shift towards the end with the weight block 21, thus ensuring that the sample soil stored in the sampling tube 9 will not spill due to bumps. Simultaneously, to prevent the sampling tube 9 from rotating towards the weight block 21 before obtaining a soil sample, the hook seat 23 hooks the pull ring 22, maintaining the sampling tube 9 in a balanced state. This allows the sampling tube 9 to pass horizontally through the collar 14 when the top support cylinder 4 supports it.

[0034] As an advanced solution for geological disaster exploration and sampling equipment, the bottom of the hook base 23 includes a base body and a torsion spring rod 24. The torsion spring rod 24 is externally fixedly connected to a hook claw 25, and the hook claw 25 passes through the pull ring 22. The torsion spring rod 24 is equipped with a torsion spring.

[0035] As a further explanation of this embodiment of the invention, when the hook 25 and the pull ring 22 need to cooperate to hook the end of the sampling tube 9, the supporting cylinder 4 supports the sampling tube 9 and moves the sampling tube 9 forward. The pull ring 22 pulls the hook 25, causing the torsion spring rod 24 to rotate downward and compress the torsion spring until the hook 25 disengages from the pull ring 22. The torsion spring force in the torsion spring rod 24 causes the hook 25 to reset, and the reset hook 25 is tilted upward. The sampling tube 9 is supported and reset by the spring 17, and the hook 25 can no longer penetrate the pull ring 22 and maintain the balance of the sampling tube 9. This ensures that the sampling tube 9 resets and rotates to the upward tilted state after obtaining the soil sample, which is convenient for storing the soil sample.

[0036] During the sampling process, the spring 17 always abuts against the extension bracket 7, and the end of the sampling tube 9 is in contact with the output end of the top support cylinder 4. Therefore, when the end of the sampling tube 9 abuts against the output end of the top support cylinder 4, the sampling tube 9 is always in a balanced state.

[0037] As an advanced solution for geological disaster exploration and sampling equipment, the lifting support 1 includes a top plate and a bottom plate. A guide rod is fixedly connected to the top of the bottom plate, and the top of the guide rod is fixedly connected to the bottom of the top plate. A screw is rotatably connected to the top of the bottom plate, and a receiving gear is fixedly connected through the top of the screw. A drive gear is rotatably connected inside the top plate, and the drive gear meshes with the receiving gear. A second motor is fixedly installed on the top of the top plate, and the output end of the second motor extends into the top plate and is fixedly connected to the drive gear. The same end of the first mounting platform 2 and the second mounting platform 3 are slidably sleeved on the guide rod, and the other end is matched with the screw.

[0038] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of written expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this application.

Claims

1. A geological disaster investigation and sampling device, comprising a lifting support (1), characterized in that, The lifting bracket (1) is equipped with a first mounting platform (2) and a second mounting platform (3) which are slidably installed inside the bracket. The first mounting platform (2) and the second mounting platform (3) are fixedly connected. A top support cylinder (4) is fixedly installed on the first mounting platform (2). A turntable (5) is rotatably installed on the bottom of the second mounting platform (3). Multiple storage and retrieval integrated mechanisms are installed on the bottom of the turntable (5). The storage and retrieval integrated mechanism includes a sampling component and a sample storage component. A first motor (6) for driving the turntable (5) to rotate is fixedly installed on the top of the second mounting platform (3). When the top support cylinder (4) supports the sampling component, the sampling component penetrates the target soil layer to obtain a soil sample and automatically saves the soil sample in conjunction with the sample storage component. The sampling assembly includes an extension bracket (7) that is slidably installed in a turntable (5). A passage groove (8) for the extension bracket (7) to slide in the turntable (5) is provided. A sampling tube (9) is installed at the bottom of the extension bracket (7). An elastic support assembly for driving the sampling tube (9) to reset is provided in the passage groove (8). The sampling tube (9) is fixedly connected to a cutting steel strip (10) at its end. The outer wall of the sampling tube (9) is provided with a combined sliding groove, which includes a straight groove (11) and a spiral groove (12). The spiral groove (12) is connected to the straight groove (11). A strip plate (13) is fixedly installed on the outer periphery of the turntable (5). A collar (14) is fixedly connected to the bottom of the strip plate (13). A ball (15) for cooperating with the combined sliding groove is fixedly installed on the inner wall of the collar (14). The sampling tube (9) is hinged to the extension bracket (7) through the sample storage assembly. When the top support cylinder (4) pushes the sampling tube (9) forward through the collar (14), the ball (15) slides along the combined sliding groove and drives the sampling tube (9) to deflect within the sample storage assembly. The sample storage assembly includes a sliding sleeve (18) that is rotatably sleeved on the outer wall of the sampling tube (9). A rotating rod (19) is fixedly connected to the outer wall of the sliding sleeve (18). The bottom of the extension bracket (7) is hinged to the sliding sleeve (18) through the rotating rod (19). A rubber ring (20) for limiting the sliding sleeve (18) is fixedly installed on the outer wall of the sampling tube (9). A weight block (21) is fixedly sleeved on the outer side of the end of the sampling tube (9) near the top support cylinder (4). A pull ring (22) is fixedly connected to the outside of the weight block (21). A hook seat (23) for cooperating with the pull ring (22) is fixedly connected to the bottom of the turntable (5).

2. The geological disaster investigation and sampling equipment according to claim 1, characterized in that, The elastic support assembly includes a crossbar (16) fixedly installed in the passageway (8), and a spring (17) is sleeved on the outside of the crossbar (16). The two ends of the spring (17) abut against the side wall of the extension bracket (7) and the side wall of the passageway (8), respectively. The extension bracket (7) is slidably sleeved on the outside of the crossbar (16).

3. The geological disaster investigation and sampling equipment according to claim 1, characterized in that, The hook seat (23) includes a seat body and a torsion spring rod (24). The torsion spring rod (24) is externally fixedly connected with a claw (25), and the claw (25) can hook the pull ring (22).

4. The geological disaster investigation and sampling equipment according to claim 1, characterized in that, The lifting bracket (1) includes a top plate and a bottom plate. A guide rod is fixedly connected to the top of the bottom plate. The top of the guide rod is fixedly connected to the bottom of the top plate. A screw is rotatably connected to the top of the bottom plate. A receiving gear is fixedly connected through the top of the screw. A drive gear is rotatably connected inside the top plate and meshes with the receiving gear. A second motor is fixedly installed on the top of the top plate. The output end of the second motor extends into the top plate and is fixedly connected to the drive gear. The same end of the first mounting platform (2) and the second mounting platform (3) are slidably sleeved on the guide rod, and the other end is matched with the screw.

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