A geotechnical investigation sampling instrument

Abstract

The present application relates to the technical field of geological exploration, in particular to a kind of geotechnical investigation sampling instrument, including engine, the switch of control engine start is fixedly installed in one end of engine side wall, the hand puller of detachably fixedly installed in engine can drive engine rotation, the mounting bracket of detachably connected in engine bottom, the hand-held pipe of fixedly connected in both ends of mounting bracket, the protective shell of fixedly installed in the middle of engine bottom, the transmission rod of detachably fixedly connected in the engine output end in protective shell, the soil sampler of detachably fixedly connected in the bottom end of transmission rod, the stabilizing device of slidingly connected in protective shell.The present application is by adding stabilizing device, ensure that geotechnical investigation sampling instrument keeps vertical sampling, guarantee the accuracy of the geotechnical sample of sampling, while stabilizing device provides support to machine, avoid machine accident of falling off hand.

Description

Technical Field

[0001] This invention relates to the field of geological exploration technology, specifically to a rock and soil exploration sampling instrument. Background Technology

[0002] Before any land construction project is implemented, a geological survey is conducted in advance to determine whether the local land is suitable for the project. This geological survey requires the use of a geotechnical sampling instrument. There are various types of geotechnical sampling instruments on the market, with portable geotechnical sampling instruments being the most common.

[0003] Common portable geotechnical surveying and sampling instruments mainly consist of an engine, a transmission rod, and a soil sampler connected together. For ease of carrying, they are rarely equipped with fixed support devices. Also, due to the presence of mountainous areas in the surveyed regions, portable geotechnical surveying and sampling instruments are often used. During routine geotechnical surveying and sampling, the machine is started manually and a downward pressure is applied to drive the soil sampler to the ground, thereby achieving the purpose of geotechnical sampling.

[0004] The entire geotechnical surveying and sampling instrument is mostly made of metal. Excluding other structural components, the motor alone weighs around 25 kg, making it quite heavy even for a portable model compared to manual operation. When the soil is soft, the operator only needs to operate the machine for 1-2 minutes to complete the sampling. However, when the soil contains hard rocks, the operator needs to support the machine for 5-6 minutes. During this time, the impact frequency of the sampler is 1500 times per minute, generating relative vibration and causing the geotechnical surveying and sampling instrument to swing at a certain angle. This prevents the required sampling depth from being reached, affecting the sampling results and compromising sample accuracy. Furthermore, prolonged high-frequency vibration can cause muscle fatigue in the operator, potentially leading to the machine slipping from their hands.

[0005] To address this issue, a soil and rock exploration sampling instrument is proposed. By adding a stabilizing device, the instrument can be controlled to maintain vertical sampling and also provides support, thus solving the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide a geotechnical exploration and sampling instrument. By setting a stabilizing device, the geotechnical exploration and sampling instrument is kept vertically sampled within the stabilizing device after it is started. At the same time, the geotechnical exploration and sampling instrument is supported. The operator only needs to apply downward pressure to perform vertical feeding and exploration sampling, thereby solving the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A soil and rock exploration sampling instrument, comprising:

[0009] Engine, switch, hand lever, mounting bracket, protective housing, hand handle, drive rod, and soil scraper;

[0010] Also includes:

[0011] A stabilizing device is slidably connected to the protective shell to restrict the entire geotechnical surveying and sampling instrument to only move vertically up and down.

[0012] Preferably, the stabilizing device includes a sleeve fitted over the outer side of the protective shell. A limiting groove is fixedly formed on the protective shell to cooperate with the sleeve. A leveling device is fixedly installed on the sleeve. Multiple support rods are rotatably connected to the bottom end of the sleeve, and each support rod has a support foot rotatably installed at its bottom end. The stabilizing device is fixed to the sampling ground by the multiple support feet and support rods. Then, the leveling device is adjusted to make the sleeve horizontal, ensuring that the geotechnical sampling within the sleeve always maintains vertical movement, thus ensuring the accuracy of the sampling depth.

[0013] Preferably, a graphite pad is fixedly installed on the inner wall of the sleeve to control the stable vertical movement of the soil and rock exploration sampler. The outer contour shape of the graphite pad matches the limiting groove. The graphite pad makes the movement of the soil and rock exploration sampler within the sleeve smoother, and at the same time, the graphite pad can offset some of the vibrations generated during the operation of the soil and rock exploration sampler, maintaining the stability of the entire device.

[0014] Preferably, the support rod includes multiple fixed rods rotatably connected to the bottom end of the sleeve. Each fixed rod has a groove fixedly formed therein, and a movable rod is slidably installed within the groove. Multiple threaded holes are evenly formed on the bottom side wall of each fixed rod, and multiple circular holes that mate with the threaded holes are fixedly formed on the side wall of each movable rod. The movable rod and the fixed rod are bolted together using a Hardlock nut. When the support rod is opened to a suitable angle, the length of the support rod can be changed by sliding the movable rod within the groove. When the movable rod is extended to a suitable length, it can be bolted together using the Hardlock nut. The Hardlock nut has excellent anti-loosening properties, effectively fixing the movable rod within the fixed rod and preventing vibrations during the operation of the geotechnical sampling instrument from altering the length of the support rod.

[0015] Preferably, each of the fixed rods has multiple connecting plates symmetrically and rotatably mounted on its sidewall. Each connecting plate has a threaded hole. Adjacent fixed rods are connected and fixed to each other via two connecting plates, which are then bolted together using Hardlock nuts. After each support rod is opened to a suitable angle and its length is fixed, each rotating plate is rotated until they are in contact with each other. The two connecting plates are then bolted together using Hardlock nuts. The anti-loosening properties of Hardlock nuts ensure a secure connection and fixation of each support rod, giving the entire stabilizing device good stability and preventing rotation of each support rod due to vibrations generated during the operation of the geotechnical sampling instrument.

[0016] Preferably, a pointed cone for stabilizing the support foot is fixedly installed at the bottom end of the support foot, and a feedback device for indicating whether the support foot is stably connected to the ground is fixedly installed on the pointed cone. The pointed cone fully penetrating the ground ensures that the support foot is in contact with the ground, while the feedback device ensures that the support foot is fully connected and fixed to the ground, preventing the support foot from shifting due to vibrations during operation and affecting the stability of the entire device.

[0017] Preferably, the feedback device includes a pressure sensor mounted on the cone, and an indicator light electrically connected to the pressure sensor is mounted on the support leg. From the moment the cone penetrates the ground, the pressure sensor is subjected to pressure from the surrounding rock and soil. When the pressure reaches a certain value, the support leg will no longer shift due to vibration. At this point, the pressure sensor sends an electrical signal to the indicator light, which illuminates, indicating to the operator that the stability of the support leg has met the working requirements and the next step can be performed.

[0018] Preferably, the leveling device includes a level embedded and fixedly mounted on the top of the sleeve for quick detection of whether the sleeve is balanced, and a stepless leveling mechanism that ensures the balance of the sleeve is telescopically installed between the bottom end of the sleeve and the support rod. The balance of the sleeve can be quickly determined based on the display on the level. After identifying which end of the sleeve is tilted, the stepless leveling mechanism on the corresponding end of the support rod can be adjusted to control the sleeve to maintain balance, ensuring that the geotechnical survey sampling instrument can stably and vertically sample.

[0019] Preferably, the stepless leveling mechanism includes a mounting block fixedly installed at the bottom of the sleeve, a movable block rotatably installed inside the mounting block, a sliding groove II fixedly opened inside the movable block, and a fixed rod slidably inserted into the sliding groove II. Two threaded holes III are symmetrically opened on the side walls at both ends of the movable block. A sliding block is slidably installed in one end of each threaded hole III. Multiple mounting grooves are fixedly opened on one end of each sliding block. A locking rod is fixedly connected to each mounting groove by a spring, and one end of the locking rod extends to the outside of the sliding block. Multiple locking grooves that cooperate with the locking rod are correspondingly opened on the side walls at both ends of the fixed rod. A screw that controls the locking rod to move closer to or away from the locking groove is engaged in the other end of the threaded hole III. A corresponding Hardlock nut III is engaged in the screw. The relative sliding and fixing of the movable rod within the fixed rod controls a wide range of height changes. Once the approximate height is determined, the movable block is controlled to slide on the movable rod to achieve fine adjustments to the height, keeping the sleeve balanced. At this point, the Hardlock nut three is engaged with the screw, increasing the engagement depth of the screw within the threaded hole three. This pushes the sliding block to compress multiple springs, controlling multiple locking rods to engage in the slots at that position, fixing the movable rod in the corresponding position within the movable block. This ensures the sleeve remains stable and balanced, facilitating vertical sampling by the geotechnical survey sampling instrument.

[0020] Preferably, the level is symmetrically equipped with two indicator lights at both ends to indicate sleeve imbalance, and each indicator light is electrically connected to the level. When the geotechnical sampling instrument is performing vertical sampling inside the sleeve, the vibration generated may cause the sleeve to tilt due to insufficient precision in the operator's assembly of the stabilizing device. It becomes inconvenient for the operator to detect whether the sleeve is balanced using the level. In this case, the level will send an electrical signal to the corresponding indicator light to illuminate and warn the operator that the sleeve is tilted at that end. This allows the operator to adjust the balance at that end and prevents the geotechnical sampling instrument from swinging during sampling, which could affect the accuracy of the sampling.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] 1. The rock and soil exploration sampling instrument of the present invention ensures that the rock and soil exploration sampling instrument can maintain vertical sampling during operation by adding a stabilizing device, controlling the exploration and sampling depth to be constant, ensuring the accuracy of the exploration and sampling results, and at the same time providing support for the rock and soil exploration sampling instrument to prevent the operator from dropping the machine due to prolonged high-frequency vibration.

[0023] 2. The geotechnical exploration sampling instrument of the present invention has a level installed on the sleeve that can quickly detect whether the sleeve is horizontal during installation. At the same time, the depth of the screw engagement into the threaded hole is adjusted by the Hardlock nut three, and the slider is pushed to compress the spring so that the locking rod is fully engaged in the locking groove at different positions, realizing the relative sliding of the movable block on the movable rod, controlling the change of the height of the corresponding end of the sleeve, so as to balance the sleeve and facilitate the vertical sampling of the geotechnical exploration sampling instrument.

[0024] 3. The rock and soil exploration sampling instrument of the present invention has a pressure sensor fixedly installed on the pointed cone. When the soil pressure reaches the set target value, it sends an electrical signal to the electrically connected indicator light. The indicator light lights up to indicate that the support foot is completely stable on the ground, thus avoiding the vibration generated during operation that causes the support foot to shift and affects the stability of the entire device. Attached Figure Description

[0025] Figure 1 A schematic diagram of the overall structure of the stabilizing device;

[0026] Figure 2 A schematic diagram of the main structure of a geotechnical investigation sampling instrument;

[0027] Figure 3 The stabilizing device is attempting to;

[0028] Figure 4 Top view of the stabilizing device;

[0029] Figure 5 for Figure 1 Enlarged view of section A in the middle;

[0030] Figure 6 for Figure 1 Enlarged view of section B;

[0031] Figure 7 for Figure 3 Enlarged section view of part C in the middle;

[0032] Figure 8 for Figure 7 Enlarged view of section D in the middle.

[0033] In the diagram: 1. Engine; 2. Switch; 3. Hand lever; 4. Mounting bracket; 5. Handrail; 6. Protective shell; 7. Transmission rod; 8. Soil scraper; 9. Limiting groove; 10. Sleeve; 11. Support foot; 12. Graphite pad; 13. Fixed rod; 14. Movable rod; 15. Hardlock nut one; 16. Connecting plate; 17. Hardlock nut two; 18. Cone; 19. Indicator light; 20. Level; 21. Mounting block; 22. Movable block; 23. Sliding block; 24. Spring; 25. Locking rod; 26. Locking groove; 27. Screw; 28. Hardlock nut three; 29. ​​Indicator light. Detailed Implementation

[0034] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0035] Example 1, refer to Figure 2 When using the geotechnical sampling instrument to sample the ground, first, connect and fix the transmission rod 7 to the soil sampler 8 on the ground. Then, connect and fix the transmission rod 7 to the output end of the geotechnical sampling instrument's engine 1. At this time, you can start the switch 2, pull the lever 3, and control the engine 1 to rotate, so that the entire geotechnical sampling instrument starts to run. The operator directly holds the handles 5 at both ends to stand the geotechnical sampling instrument upright, controlling the geotechnical sampling instrument to be vertical on the ground to be measured. Then, the operator applies a downward pressure to the handles 5 to ensure that the soil sampler 8 can impact and rotate the ground under the drive of the motor. During this process, since the geotechnical sampling instrument's engine 1 alone weighs about 25KG, the operator not only... Applying pressure and a supporting force to the geotechnical sampling instrument is necessary to ensure its proper impact and rotation sampling operation on the ground. Because the sampling device operates at an impact frequency of 1500 times per minute, the impact rotation time increases when there is a large amount of rock in the sampled area. Prolonged high-frequency impacts can cause muscle fatigue for the operator, inevitably leading to the instrument swaying at an angle and affecting the accuracy of the soil and rock samples. This necessitates repeated sampling of the area and calculation of the average data to ensure accuracy. While this method of directly using the geotechnical sampling instrument saves installation time for the stabilization device, the sampling accuracy is lower. When lower accuracy is required for the soil and rock samples and the sampling height is not critical, the geotechnical sampling instrument can be used directly for ground sampling.

[0036] Example 2, refer to Figure 1When a stabilizing device needs to be installed before using the geotechnical surveying and sampling instrument, first repeat the steps described above for assembling the geotechnical surveying and sampling instrument. After assembling the instrument, place it aside. Then begin installing the stabilizing device. First, open each support rod to a suitable angle, then apply pressure to each support foot 11, ensuring the cone 18 is fully embedded in the ground for sampling. Continue until the pressure sensor receives enough pressure to ensure the support foot 11 is completely stable on the ground. The pressure sensor then sends an electrical signal to the indicator light 19, causing it to illuminate. Only then can the relative length of the movable rod 14 be adjusted, allowing it to slide within the groove and extend to a certain length to ensure proper engagement and disengagement. The appropriate height facilitates operator surveying and sampling. During this process, Hardlock nuts 15 are used to fix the movable rod 14 inside the fixed rod 13 with bolts, ensuring the stability of the support rod length and preventing changes in the length of the support rod due to vibration during operation, which would affect normal surveying and sampling. At the same time, the connecting plates 16 on each fixed rod 13 are rotated so that the connecting plates 16 fit together in pairs. Similarly, Hardlock nuts 27 are used to fix the two connecting plates 16 with bolts, further reinforcing the structural stability between each support rod and controlling the stability of each support rod at this opening angle, which facilitates surveying and sampling. At this time, the results displayed on the level 20 can be clearly observed, showing that the sleeve 10 will move due to each support rod. The different lengths of the support legs 11 cause a certain angle of tilt. First, adjust the sleeve 10 to a horizontal position. Then, engage the two screws 27 into the threaded holes at both ends until it is clearly impossible to rotate them. Next, use the Hardlock nut 28 to engage and secure the screws 27, completely locking them in place. During this process, because the screws 27 are engaged and rotating within the threaded holes, there is some relative movement, which pushes the sliding block 23 to compress the spring 24. This controls the locking rods 25 on both sides to engage into the corresponding slots 26, completely fixing the fixed rod 13 within the movable block 22. This allows for fine adjustment of the relative height of the movable rod 14 in this situation, ensuring the sleeve 10 remains completely balanced. Finally, the operator can directly lift the soil and rock exploration sampling instrument and place it into the sleeve 10 to ensure that vertical exploration and sampling can be carried out continuously, ensuring that the exploration and sampling height remains unchanged and the soil and rock samples are highly accurate. At the same time, the graphite pad 12 installed on the inner wall of the sleeve 10 facilitates the smooth movement of the soil and rock exploration sampling instrument within the sleeve 10 and can also offset some of the vibrations generated during operation. During operation, the operator can observe that the indicator light 29 is always in the off state to ensure that the balance of the sleeve 10 remains unchanged and to ensure the accuracy of sampling. Once the indicator light 29 lights up, the operator will know in time that the sleeve 10 has tilted and can temporarily stop the work to adjust the sleeve 10.This method of vertical sampling, which uses a stabilizing device to keep the soil and rock sampler at a certain height, requires the installation of an additional stabilizing device, which must be disassembled after operation. However, it ensures that the soil and rock samples are of good accuracy, eliminating the need for repeated sampling operations to obtain accurate soil and rock data. At the same time, it provides some support for the soil and rock exploration sampler, and the operator only needs to apply a small amount of support and pressure to complete the exploration and sampling. Even if the operation time is too long, it is not easy to cause muscle fatigue to the operator.

Claims

1. A soil and rock exploration sampling instrument, comprising: Engine, switch, hand lever, mounting bracket, hand handle, protective housing, drive rod, and soil scraper; Its characteristic is that it further includes: The stabilizing device is connected to the protective shell, which limits the entire geotechnical survey sampling instrument to vertical movement only. The stabilizing device includes a sleeve fitted on the outside of the protective shell. The protective shell has a limiting groove that cooperates with the sleeve. A leveling device is installed on the sleeve. Multiple support rods are connected to the bottom of the sleeve, and a support foot is installed at the bottom of each support rod. The inner wall of the sleeve is equipped with a graphite pad to control the stable vertical movement of the soil and rock exploration sampling instrument. The outer contour shape of the graphite pad matches the limiting groove. The support rod includes multiple fixed rods connected to the bottom end of the sleeve. Each fixed rod has a groove and a movable rod installed in each groove. Multiple threaded holes are evenly provided on the side wall of the bottom end of the fixed rod. Multiple round holes that cooperate with the threaded holes are provided on the side wall of the movable rod. The movable rod and the fixed rod are bolted together and fixed by a Hardlock nut. Two connecting plates are symmetrically installed on the side wall of each fixed rod. Each connecting plate has a threaded hole. Two adjacent fixed rods are connected and fixed to each other through the two connecting plates. The two connecting plates are bolted together and fixed by Hardlock nuts. The bottom of the support foot is equipped with a pointed cone for stabilizing the support foot, and a feedback device is installed on the pointed cone to indicate whether the support foot is stably connected to the ground; The feedback device includes a pressure sensor mounted on a pointed cone, and an indicator light electrically connected to the pressure sensor is mounted on the support foot; The leveling device includes a level installed on the top of the sleeve to indicate whether the sleeve is level, and a stepless leveling mechanism installed between the bottom of the sleeve and the support rod to ensure the balance of the sleeve. The stepless leveling mechanism includes a mounting block installed at the bottom of the sleeve, a movable block installed inside the mounting block, a sliding groove II opened in the movable block, and a fixed rod inserted into the sliding groove II. Two threaded holes III are symmetrically opened on the side walls at both ends of the movable block. A sliding block is installed in one end of each threaded hole III. Multiple mounting grooves are opened on one end of each sliding block. A locking rod is connected to each mounting groove by a spring, and one end of the locking rod extends to the outside of the sliding block. Multiple locking grooves that cooperate with the locking rod are opened on the side walls at both ends of the fixed rod. A screw rod that controls the locking rod to move closer to or away from the locking groove is installed in the other end of the threaded hole III. A corresponding Hardlock nut III is installed on the screw rod. Two indicator lights are symmetrically installed at both ends of the level to warn of unbalanced sleeves, and the two indicator lights are electrically connected to the level.

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