Raw material sampling device for geotechnical experiment

Abstract

The utility model provides a raw material sampling device for geotechnical experiments, which belongs to the technical field of geotechnical and comprises a connecting table, a connecting handle and a connecting frame are fixedly connected to the top end of the connecting table, a convex hole is formed in the top end of the connecting table, and a sliding plate is movably clamped in the convex hole. The sliding plate is slidably connected into the connecting frame, and a connecting sleeve is fixedly connected into the sliding plate. Through cooperative work of a connecting table, a lead screw, a nut, a sliding plate, a connecting sleeve and other components and a first motor serving as a power source, an operator can accurately control the vertical position of the sampling mechanism according to a height ruler and an intelligent display screen, it is guaranteed that the sampling depth is consistent every time, and then the accuracy of the sampling amount is guaranteed; for example, when stratified sampling of soil at different depths is carried out, soil samples of all layers can be accurately obtained, the reliability of experimental data is improved, and accurate data support is provided for geologic analysis of geotechnical engineering.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of geotechnical techniques, and particularly relates to a raw material sampling device for geotechnical experiments. BACKGROUND

[0002] In the field of geotechnical experiments, the research on different consolidation state soil layers is very important. As we know, the overconsolidation ratio, which is the ratio of the preconsolidation pressure to the existing soil layer effective cover pressure, is a key indicator for dividing the consolidation state of the soil layer into the normally consolidated state, the overconsolidated state and the underconsolidated state. Among them, the normally consolidated soil has been completely consolidated under the existing self-weight pressure, and the existing self-weight pressure is equivalent to the preconsolidation pressure. When experiments and analyses are carried out on these soil layers, accurately obtaining the raw material samples for experiments is a basic and key link. However, at present, there is still a lack of a device that can accurately and efficiently obtain representative samples for different consolidation state soil layers in the raw material sampling process of geotechnical experiments.

[0003] The authorized publication number "CN218847699U" records a kind of portable geotechnical geological sampling equipment, including base, mobile assembly is equipped in the bottom of base, two hydraulic rods are fixedly connected on the top of base, the top of two hydraulic rods is connected by fixed plate, the top of fixed plate is fixedly connected with gantry and first motor respectively, adjusting rod is threadedly connected in the middle part of gantry, bearing seat is fixedly connected in the bottom end of adjusting rod, sampling cylinder is fixedly connected in the bottom of bearing seat, the improved sampling equipment, through the cooperation of hydraulic rod, first motor, main gear, secondary gear, drill bit, second motor, threaded rod and push plate, soil sample is stored in sampling cylinder, and sample is lifted by push plate, so that staff can more conveniently take out sample, the middle part of sampling cylinder is divided into multiple storage cavities by partition plate, to realize the function of sampling geological soil sample of different depth.

[0004] The above-mentioned patent lifts the sample by the push plate, so that the staff can more conveniently take out the sample, and the middle part of the sampling cylinder is divided into multiple storage cavities by the partition plate, to realize the function of sampling geological soil sample of different depth. However, the above-mentioned patent has certain limitations when in use, cannot ensure the accuracy of sampling amount and uniform distribution of particles each time, and is easy to produce deviation. When sampling powdery materials (such as cement), the dust problem not only causes material loss, but also pollutes the environment, and it is difficult to accurately control the sampling amount. For sampling blocky materials (such as bricks), the labor and time cost is high, and the regularity and size accuracy of the sample cannot be guaranteed. UTILITY MODEL CONTENTS

[0005] The utility model discloses a purpose lies in providing a raw material sampling device for geotechnical experiment, it is in existing technology with the purpose that cannot ensure that each sampling amount is accurate and particle distribution is even, and it is easy to produce deviation, when sampling to the powdery material (such as cement), the dust problem not only causes material loss, but also will pollute the environment, and it is difficult to accurately control the sampling amount, for the sampling of the massive material (such as brick), the labor and time cost are higher, and the regularity and size accuracy of the sample are difficult to guarantee.

[0006] In order to achieve the above object, the utility model provides the following technical scheme:

[0007] A raw material sampling device for geotechnical experiment, it include:

[0008] The top of connecting table is fixedly connected with connecting handle and connecting frame, the top of connecting table is provided with convex hole, the sliding plate is movably connected in the convex hole, the sliding plate is slidably connected in the connecting frame, and the connecting sleeve is fixedly connected in the sliding plate.

[0009] The screw rod is rotatably connected to the proximal end of the connecting frame and the connecting table, the proximal end of the connecting frame and the connecting table is fixedly connected with the limiting rod, and the top of the connecting frame is fixedly connected with the first motor.

[0010] The nut is threadedly connected to the circumferential surface of the screw rod, and the nut is fixedly connected in the sliding plate.

[0011] The sampling mechanism is arranged in the connecting sleeve, and the sampling mechanism is used for sampling soil samples.

[0012] As a preferred scheme of the utility model, the sampling mechanism includes:

[0013] The first motor is fixedly connected to the top of the connecting frame, and the output end of the first motor is fixedly connected to the top of the screw rod.

[0014] The fixed plate is fixedly connected in the connecting sleeve.

[0015] The rotating rod is rotatably connected to the bottom inner wall of the connecting sleeve, and the other end of the rotating rod is rotatably connected in the fixed plate.

[0016] The second motor is fixedly connected to the top of the fixed plate, and the output end of the second motor is fixedly connected to the top of the rotating rod.

[0017] The mounting plate is fixedly connected to the circumferential inner wall of the connecting sleeve.

[0018] The plastic sleeve is movably connected in the mounting plate.

[0019] The rotation sleeve is rotationally connected in the connecting sleeve, the bottom end of the rotation sleeve is fixedly connected with a conical sleeve, the circumferential surface of the conical sleeve is provided with a soil inlet, the conical sleeves are communicated with each other, the circumferential inner wall of the rotation sleeve is fixedly connected with a spiral fixed blade, and the bottom end of the spiral fixed blade is fixedly connected with a conical drill.

[0020] The transmission gears are provided with two, the two transmission gears are fixedly connected with the circumferential surfaces of the rotation sleeve and the rotation rod respectively, and the two transmission gears are engaged.

[0021] As a preferred scheme of the utility model, the top end of the connecting handle is provided with a control button, and the rear end of the connecting handle is fixedly connected with an intelligent display screen.

[0022] As a preferred scheme of the utility model, the bottom end of the connecting table is fixedly connected with moving wheels at four corners, and the outer surface of the connecting table is fixedly connected with a plastic frame.

[0023] As a preferred scheme of the utility model, the top end of the connecting table is provided with positioning holes at four corners, and the two ends of the connecting frame are fixedly connected with height scale stickers.

[0024] As a preferred scheme of the utility model, the rear end of the connecting frame is fixedly connected with a plastic transparent partition plate, and the plastic sleeve movably clamps a sealing cover.

[0025] Compared with the prior art, the utility model has the advantages that:

[0026] 1、In the scheme, through the cooperative work of the connecting table, the screw rod, the nut, the sliding plate and the connecting sleeve and the first motor as a power source, the operator can accurately control the vertical position of the sampling mechanism according to the height scale sticker and the intelligent display screen, ensure that the sampling depth is consistent each time, and then ensure the accuracy of the sampling amount, for example, when different depth soil layer sampling is carried out, each layer of soil sample can be accurately obtained, the reliability of experimental data is improved, and accurate data support is provided for geotechnical engineering geological analysis.

[0027] The second motor, the rotation rod, the rotation sleeve, the conical sleeve, the spiral fixed blade and the conical drill in the sampling mechanism are designed, so that the device can adapt to different hardness and humidity of soil conditions, efficiently obtain samples, the second motor can adjust the rotation speed and torque according to the soil properties, enhance the drilling capacity and improve the sampling efficiency, meanwhile, the stable cooperation of the components ensures the continuity and efficiency of the sampling process, for example, the transmission gears ensure that the rotation sleeve and the rotation rod rotate synchronously, so that the soil sample collection and lifting are more stable, the overall sampling quality is improved, and it is helpful to quickly obtain a large number of accurate soil samples for geotechnical experiments.

[0028] 2、In the scheme, the control button connected to the top end of the handle is convenient for the operator to directly control the start, stop and running parameter adjustment of the key components such as the first motor and the second motor, improves the operation convenience, the plastic transparent partition plate connected to the rear end of the connecting frame can prevent soil samples or sundries from splashing, protect the personal safety of the operator and the cleanliness of the clothes, and facilitate real-time monitoring of the sampling process and timely handling of abnormal situations, for example, when sampling in a complex environment in the wild, the operator can conveniently operate and timely find problems such as soil blocking the soil inlet, ensure the smooth progress of the sampling work, and improve the safety and convenience of the operation;

[0029] The plastic sleeve is movably clamped in the mounting plate, has multiple effects such as buffering, protection, isolation and increasing friction, reduces the wear of the inner wall of the connecting sleeve, prevents the soil sample from corroding or polluting the device, is convenient for cleaning and maintenance, prolongs the service life of the device, better fixes the soil sample, guarantees the sampling integrity and accuracy, avoids excessive damage to the sample structure, is beneficial to subsequent experimental analysis, after the sampling is completed, the sealing cover in the plastic sleeve can seal and store the soil sample, prevents water evaporation, component loss or impurity pollution, ensures that the original characteristics of the sample can be maintained, provides reliable sample protection for geotechnical experiments, and guarantees the accuracy and scientificity of the experimental results. BRIEF DESCRIPTION OF DRAWINGS

[0030] The accompanying drawings are used to provide a further understanding of the present application, and constitute a part of the specification, and are used together with embodiments of the present application to explain the present application, and do not constitute a limitation on the present application. In the drawings:

[0031] Figure 1 It is a perspective view of the present application;

[0032] Figure 2 It is a perspective view of the present application; Figure 1 It is a partial enlarged view of A in the present application;

[0033] Figure 3 It is a first perspective view of the present application;

[0034] Figure 4 It is a partial enlarged view of B in the present application; Figure 3 It is a first perspective view of the present application;

[0035] Figure 5 It is a first perspective view of the present application;

[0036] In the figure: 1, connecting table; 2, positioning hole; 3, moving wheel; 4, plastic frame; 5, convex hole; 6, connecting frame; 7, height scale; 8, first motor; 9, connecting handle; 10, control button; 11, screw rod; 12, nut; 13, sliding plate; 14, connecting sleeve; 15, plastic transparent partition plate; 16, intelligent display screen; 17, fixed plate; 18, mounting plate; 19, second motor; 20, rotating rod; 21, rotating sleeve; 22, spiral fixed blade; 23, conical sleeve; 24, conical drill; 25, plastic sleeve; 26, sealing cover; 27, transmission gear. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0038] Embodiment: please refer to Figures 1-5 The present application provides the following technical solutions:

[0039] A raw material sampling device for geotechnical experiment, comprising:

[0040] The connecting table 1 is fixedly connected with the connecting handle 9 and the connecting frame 6 at the top end, and the convex hole 5 is formed in the top end of the connecting table 1, the sliding plate 13 is movably connected in the convex hole 5, the sliding plate 13 is slidably connected in the connecting frame 6, and the connecting sleeve 14 is fixedly connected in the sliding plate 13;

[0041] The screw rod 11 is rotatably connected at the proximal end of the connecting frame 6 and the connecting table 1, the proximal end of the connecting frame 6 and the connecting table 1 is fixedly connected with the limiting rod, and the top end of the connecting frame 6 is fixedly connected with the first motor 8;

[0042] The nut 12 is threadedly connected to the circumferential surface of the screw rod 11, and the nut 12 is fixedly connected in the sliding plate 13; and

[0043] The sampling mechanism is arranged in the connecting sleeve 14, and the sampling mechanism is used for sampling soil samples.

[0044] In the embodiment of the utility model, the connecting table 1 is the basic supporting part of the whole device, the top fixed connecting handle 9 is convenient for the operator to move the device, the connecting frame 6 is used for installing the lead screw 11 and other components, and the convex hole 5 provides space and limiting for the movement of the sliding plate 13, ensures that the sliding plate 13 can stably slide up and down in the connecting frame 6, thereby driving the sampling mechanism to move up and down to adapt to the sampling requirement of different depths.

[0045] The lead screw 11 is rotationally connected to the connecting frame 6 and the connecting table 1 at the proximal end, and through the thread cooperation with the nut 12, when the lead screw 11 rotates, the nut 12 will drive the fixed sliding plate 13 to move along the axis direction of the lead screw 11. The limiting rod further ensures the stability of the movement of the sliding plate 13, prevents it from deviating or rotating, thereby accurately controls the vertical position of the sampling mechanism, and ensures the consistency and accuracy of the sampling depth each time.

[0046] The nut 12, due to the thread connection with the lead screw 11 and the fixed connection with the sliding plate 13, plays a role in converting the rotary motion of the lead screw 11 into the linear motion of the sliding plate 13, so that the sampling mechanism can realize accurate up-down displacement under the driving of the lead screw 11, thereby meeting the soil sampling operation of different height positions.

[0047] The first motor 8 is the power source for the rotation of the lead screw 11, and is fixed at the top end of the connecting frame 6 and fixedly connected with the top end of the lead screw 11. When the first motor 8 starts, the output shaft drives the lead screw 11 to rotate, thereby controlling the lifting of the sampling mechanism, realizing automatic depth adjustment, improving the sampling efficiency and the convenience of operation, and also ensuring the accurate control of the sampling depth, reducing the error caused by human operation.

[0048] The fixed plate 17 is fixed in the connecting sleeve 14, providing a stable installation basis for the components such as the rotating rod 20 and the second motor 19, ensuring that these components can maintain a relatively fixed positional relationship during sampling, thereby ensuring the overall stability and reliability of the sampling mechanism, so that the sampling operation can be smoothly carried out, and also conducive to the accurate cooperation between the transmission components, improving the accuracy of sampling.

[0049] The rotating rod 20 is rotationally connected to the bottom inner wall of the connecting sleeve 14 at one end and rotationally connected to the fixed plate 17 at the other end, as one of the transmission components, transmits power to the rotating sleeve 21, through the meshing with the transmission gear 27 on the rotating sleeve 21, realizes the rotation of the rotating sleeve 21, and then drives the components such as the conical sleeve 23 and the spiral fixed blade 22 to rotate, completes the drilling and collection of soil samples, and ensures the continuity and efficiency of the sampling action.

[0050] The second motor 19 is fixed at the top end of the fixed plate 17, and its output end is fixedly connected with the top end of the rotating rod 20, so as to provide power for the rotation of the rotating rod 20. During the sampling process, the start of the second motor 19 makes the rotating rod 20 rotate, thereby driving the rotating part of the whole sampling mechanism to work, realizing the drilling and sampling of the soil. The stable power output ensures the smooth progress of the sampling process, and the rotating speed and torque of the motor can be adjusted according to different soil texture and sampling requirements to obtain suitable soil samples.

[0051] The mounting plate 18 is fixed on the circumferential inner wall of the connecting sleeve 14, and is used for mounting the plastic sleeve 25. The plastic sleeve 25 is movably clamped in the mounting plate 18, which can play a buffering and protection role, reducing the wear of the inner wall of the connecting sleeve 14 during the sampling process. On the other hand, for some soil samples that may corrode or contaminate the connecting sleeve 14, the plastic sleeve 25 can play an isolation role, facilitating cleaning and maintenance after sampling and prolonging the service life of the device.

[0052] In addition to the above-mentioned protection and isolation role, the plastic sleeve 25 can also increase the friction between the connecting sleeve 14 and the soil sample to some extent, which helps to better fix the soil sample during sampling, prevents it from slipping or loosening during sampling, and thus ensures the integrity and accuracy of the sampling. At the same time, its soft material can also avoid excessive damage to the structure of the soil sample, which is beneficial to subsequent experimental analysis.

[0053] The rotating sleeve 21 is rotatably connected in the connecting sleeve 14, and the conical sleeve 23 at the bottom end is designed to facilitate easier insertion into the soil during sampling, reducing the resistance of the soil to the sampling device. The soil inlet on the circumferential surface of the conical sleeve 23 allows the soil to smoothly enter the inside of the rotating sleeve 21, while the spiral fixing blade 22 fixed on the inner wall of the circumference lifts and fixes the soil sample upward in the rotating sleeve 21 during rotation, like a propeller. At the same time, the conical drill 24 at the bottom end of the spiral fixing blade 22 further enhances the drilling capability of the soil, ensuring the efficiency and stability of the sampling, and can smoothly obtain samples in different hardness and humidity of the soil conditions.

[0054] The transmission gears 27 are provided with two, which are fixed on the circumferential surface of the rotating rod 20 and the rotating sleeve 21 and are engaged. The gear transmission structure transmits the rotating motion of the rotating rod 20 to the rotating sleeve 21, realizes effective transmission and conversion of power, ensures that the rotating sleeve 21 and the conical sleeve 23 and the spiral fixed blade 22 and other components connected thereto can rotate synchronously with the rotating rod 20, so that each part of the sampling mechanism works cooperatively, improves the efficiency and quality of sampling, and the gear transmission has high transmission accuracy and stability, which can meet the requirement of accurate control of the sampling process. It needs to be noted that the specific use of the control button 10, the intelligent display screen 16, the second motor 19 and the first motor 8 is selected by the person skilled in the art, and the above control button 10, the intelligent display screen 16, the second motor 19 and the first motor 8 all belong to the prior art, and the present scheme will not be described here.

[0055] For details, please refer to Figures 1-5 , the sampling mechanism comprises:

[0056] The first motor 8 is fixedly connected to the top end of the connecting frame 6, and the output end of the first motor 8 is fixedly connected to the top end of the lead screw 11.

[0057] The fixed plate 17 is fixedly connected in the connecting sleeve 14;

[0058] The rotating rod 20 is rotatably connected to the inner wall of the bottom of the connecting sleeve 14, and the other end of the rotating rod 20 is rotatably connected in the fixed plate 17;

[0059] The second motor 19 is fixedly connected to the top end of the fixed plate 17, and the output end of the second motor 19 is fixedly connected to the top end of the rotating rod 20;

[0060] The mounting plate 18 is fixedly connected to the circumferential inner wall of the connecting sleeve 14;

[0061] The plastic sleeve 25 is movably clamped in the mounting plate 18;

[0062] The rotating sleeve 21 is rotatably connected in the connecting sleeve 14, the bottom end of the rotating sleeve 21 is fixedly connected with the conical sleeve 23, the circumferential surface of the conical sleeve 23 is provided with the earth inlet, the conical sleeves 23 are communicated with each other, the circumferential inner wall of the rotating sleeve 21 is fixedly connected with the spiral fixed blade 22, and the bottom end of the spiral fixed blade 22 is fixedly connected with the conical drill 24;

[0063] The transmission gears 27 are provided with two, which are fixed on the circumferential surface of the rotating rod 20 and the rotating sleeve 21 and are engaged. The gear transmission structure transmits the rotating motion of the rotating rod 20 to the rotating sleeve 21, realizes effective transmission and conversion of power, ensures that the rotating sleeve 21 and the conical sleeve 23 and the spiral fixed blade 22 and other components connected thereto can rotate synchronously with the rotating rod 20, so that each part of the sampling mechanism works cooperatively, improves the efficiency and quality of sampling, and the gear transmission has high transmission accuracy and stability, which can meet the requirement of accurate control of the sampling process. It needs to be noted that the specific use of the control button 10, the intelligent display screen 16, the second motor 19 and the first motor 8 is selected by the person skilled in the art, and the above control button 10, the intelligent display screen 16, the second motor 19 and the first motor 8 all belong to the prior art, and the present scheme will not be described here.

[0064] In this embodiment: the first motor 8 output shaft and the top of the screw rod 11 fixed connection. Through the forward and reverse control screw rod 11 rotation direction, and then drive the nut 12 and the nut 12 fixed sliding plate 13 up and down, realize the accurate position adjustment of sampling mechanism in the vertical direction, to meet the different depth of soil sample collection needs, to ensure the controllability and accuracy of sampling depth, greatly improve the adaptability of the device to different working conditions and the convenience of operation;

[0065] The fixed plate 17 provides a stable rotation fulcrum for the rotating rod 20, ensuring that the rotating rod 20 does not deviate or shake during rotation, ensuring the stability and reliability of the subsequent transmission process. At the same time, it is also the installation basis of the second motor 19, so that the second motor 19 can stably output power to drive the rotating rod 20 to rotate, providing a solid structural guarantee for the rotating action of the entire sampling mechanism, which is conducive to improving sampling efficiency and quality, and reducing errors and failures caused by unstable structure;

[0066] The output torque and speed of the second motor 19 can be adjusted according to the properties of the soil, such as hardness, humidity, etc., to adapt to the sampling needs of different types of soil. In relatively hard soil, the speed and torque can be increased to enhance the drilling capacity of the sampling device;

[0067] The mounting plate 18 provides a stable mounting position for the plastic sleeve 25, ensuring that the plastic sleeve 25 can accommodate the soil to be sampled during sampling. The plastic sleeve 25 is made of transparent material and matches the mounting plate 18, allowing the plastic sleeve 25 to stably accommodate the sampled soil;

[0068] The soil inlet on the circumferential surface of the conical sleeve 23 allows the soil to smoothly enter the interior of the rotating sleeve 21, while the spiral fixing blade 22 fixed on the inner wall of the circumference lifts the incoming soil sample upward and fixes it in the rotating sleeve 21 during rotation, achieving soil sample collection and transportation. The conical drill 24 at the bottom of the spiral fixing blade 22 further enhances the drilling capacity of the soil, which can adapt to different hardness of soil conditions, ensuring that samples can be effectively obtained in various complex soil environments, providing accurate raw materials for soil engineering experiments;

[0069] The transmission gear 27 is provided with two, respectively fixed on the circumferential surface of the rotating rod 20 and the rotating sleeve 21 and engaged. This gear transmission structure accurately transmits the rotating motion of the rotating rod 20 to the rotating sleeve 21, achieving efficient transmission and conversion of power, ensuring that the rotating sleeve 21 and its connected components such as the conical sleeve 23 and the spiral fixing blade 22 can rotate synchronously with the rotating rod 20, so that each part of the sampling mechanism works cooperatively, improving the efficiency and quality of sampling.

[0070] For details, please refer to Figures 1-3The top end of the connecting handle 9 is provided with a control button 10, and the rear end of the connecting handle 9 is fixedly connected with an intelligent display screen 16.

[0071] In this embodiment: the control button 10 provides a convenient operation mode for the operator, and through these buttons, the starting, stopping and running parameter adjustment of the key components such as the first motor 8 and the second motor 19 can be directly controlled, for example, the speed of the motor is adjusted to adapt to the sampling operation of different hardness of soil.

[0072] The intelligent display screen 16 can display the running state information of the device in real time, such as the current sampling depth obtained by the sensor cooperating with the height scale 7 and displayed, the speed of the motor, and the battery capacity if the device adopts electric drive.

[0073] For details, please refer to Figure 2 The bottom end of the connecting table 1 is fixedly connected with a mobile wheel 3 at the four corners, and the outer surface of the connecting table 1 is fixedly connected with a plastic frame 4.

[0074] In this embodiment: the mobile wheel 3 is provided to make the whole device have good mobility, which is convenient for transferring and adjusting the position in different places in the laboratory or in the wild. When it is necessary to sample the soil at multiple different positions, the operator can easily push the device to the target location without having to carry it, saving manpower and time cost, and the plastic frame 4 is used to protect the outer surface of the connecting table 1 to reduce unnecessary bumps.

[0075] For details, please refer to Figures 1-5 The top end of the connecting table 1 is provided with a positioning hole 2 at the four corners, and the two ends of the connecting frame 6 are fixedly connected with a height scale 7.

[0076] In this embodiment: the positioning hole 2 can be used to accurately position and connect the device with other auxiliary equipment or fixed devices in some specific experimental scenarios, and the height scale 7 provides an intuitive height reference for the operator, which can more accurately control the lifting height of the sampling mechanism in combination with the control button 10 and the intelligent display screen 16.

[0077] For details, please refer to Figures 1-3 The rear end of the connecting frame 6 is fixedly connected with a plastic transparent partition plate 15, and the plastic sleeve 25 is movably connected with a sealing cover 26.

[0078] In this embodiment: plastic transparent partition 15 has multiple effects. On the one hand, it can be used as a protective device to prevent soil samples or other debris from splashing onto the operator during sampling, protecting the operator's personal safety and clothing cleanliness; on the other hand, due to its transparency, the operator can observe the working condition of the sampling mechanism through the partition, such as the rotation of the spiral fixed blade 22, the soil entering the rotating sleeve 21, etc., and timely discover possible abnormal conditions, such as soil blocking the soil inlet, etc., and take corresponding measures to handle, ensure the smooth progress of the sampling process;

[0079] The main function of the sealing cover 26 is to seal and preserve the soil samples in the plastic sleeve 25 after sampling is completed.

[0080] The working principle and use process of the utility model: first, the operator starts the first motor 8 through the control button 10 at the top end of the connecting handle 9. Before starting, the operator can accurately control the forward and reverse rotation of the first motor 8 according to the pre-set sampling depth, or observe the depth information displayed on the height scale sticker 7 at both ends of the connecting frame 6 and the intelligent display screen 16 at the rear end of the connecting handle 9 in real time during the operation process. Since the output shaft of the first motor 8 is fixedly connected to the top end of the lead screw 11, when the first motor 8 rotates, the lead screw 11 rotates with it. The nut 12 is threadedly connected to the circumferential surface of the lead screw 11 and is fixedly connected to the sliding plate 13, and the sliding plate 13 is slidingly connected to the connecting frame 6, so that when the lead screw 11 rotates, the nut 12 drives the sliding plate 13 to slide up and down along the axis direction of the lead screw 11. The limiting rod fixedly connected to the approaching end of the connecting frame 6 and the connecting table 1 plays a key role in this process, which ensures the stability of the movement of the sliding plate 13 and effectively prevents it from deviating or rotating, thereby realizing the accurate position adjustment of the sampling mechanism in the vertical direction and ensuring the consistency and accuracy of the sampling depth each time.

[0081] When the sampling mechanism reaches the predetermined depth under the drive of the first motor 8, the operator then starts the second motor 19 through the control button 10. The second motor 19 is fixed at the top end of the fixed plate 17, and its output end is fixedly connected with the top end of the rotating rod 20. After being started, the output power is transmitted through the rotating rod 20. The rotating rod 20 is rotationally connected to the inner wall of the bottom of the connecting sleeve 14 and rotationally connected to the fixed plate 17 at the other end, and the circumferential surface thereof is fixedly connected with a transmission gear 27. The transmission gear 27 is engaged with another transmission gear 27 fixedly arranged on the circumferential surface of the rotating sleeve 21. Through this transmission mode, the power output by the second motor 19 drives the rotating sleeve 21, the conical sleeve 23 at the bottom thereof, the helical fixed blade 22 and the conical drill 24 to rotate synchronously. Among them, the conical drill 24 first cuts into the soil, and with the continuous rotation of the rotating sleeve 21, the helical fixed blade 22 functions like a propeller to roll the soil sample into the inside of the rotating sleeve 21 from the soil inlet on the circumferential surface of the conical sleeve 23, and to lift and fix it upwards. During the whole sampling process, the operator can clearly observe the working condition of the sampling mechanism through the plastic transparent partition plate 15 fixed at the rear end of the connecting frame 6. Once abnormal conditions such as soil blocking the soil inlet occur, timely discovery and treatment can be performed. The plastic transparent partition plate 15 has multiple functions. On the one hand, it can be used as a protective device to prevent soil samples or other debris from splashing onto the operator's body during the sampling process, thereby protecting the safety of the operator and keeping the clothes clean. On the other hand, due to its transparent property, the operator can monitor the sampling process in real time, thereby ensuring the smooth progress of the sampling work.

[0082] After the sampling is completed, the operator needs to quickly close the sealing cover 26 movably clamped in the plastic sleeve 25, so as to seal and preserve the soil sample. The sealing cover 26 plays an important role in this process. It can effectively prevent the evaporation of water in the soil sample, the loss of components or the pollution of external impurities, thereby ensuring that the original characteristics of the sample are maintained, so that the parameters of the soil can be accurately analyzed in subsequent soil engineering experiments, thereby providing a reliable data basis for the experiments.

[0083] Then, the operator starts the first motor 8 again through the control button 10 to reverse it, thereby driving the sampling mechanism to rise and return to the initial position or a position convenient for subsequent operation. During the lifting process, the operator continues to observe the height scale 7 and the intelligent display screen 16, thereby ensuring that the sampling mechanism is accurately returned.

[0084] If the next sampling needs to be carried out or after a series of sampling work is completed, the operator can clean and maintain the device properly. For example, carefully check whether there is residual soil in the inside of the connecting sleeve 14 and the surface of each component, if necessary, carefully clean, at the same time check whether the plastic sleeve 25 is worn or damaged, if necessary, replace in time, through these measures to ensure the performance and service life of the device, so that it is always in good working condition, ready for the next sampling work.

[0085] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing embodiments of the present application are described in detail, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, shall be included within the scope of the present application.

Claims

1. A raw material sampling device for geotechnical experiments, characterized by, The utility model relates to a soil sampling device, including: The top of connecting table (1) is fixedly connected with connecting handle (9) and connecting frame (6), the top of connecting table (1) is provided with male hole (5), the male hole (5) is movably connected with sliding plate (13), sliding plate (13) is slidably connected in connecting frame (6), sliding plate (13) is fixedly connected with connecting sleeve (14) in, Screw rod (11) is rotatably connected with the end of connecting frame (6) and connecting table (1) close to each other, the end of connecting frame (6) and connecting table (1) close to each other is fixedly connected with limit rod, the top of connecting frame (6) is fixedly connected with first motor (8), Nut (12) is threadedly connected with the circumference surface of screw rod (11), and nut (12) is fixedly connected in sliding plate (13), and The sampling mechanism is arranged in the connecting sleeve (14), and the sampling mechanism is used for sampling soil sample.

2. A raw material sampling device for geotechnical experiments according to claim 1, characterized in that: The sampling mechanism includes: First motor (8) is fixedly connected to the top of connecting frame (6), and the output end of first motor (8) is fixedly connected to the top of screw rod (11); Fixed plate (17) is fixedly connected in connecting sleeve (14); Rotating rod (20) is rotatably connected to the inner wall of the bottom of connecting sleeve (14), and the other end of rotating rod (20) is rotatably connected in fixed plate (17); Second motor (19) is fixedly connected to the top of fixed plate (17), and the output end of second motor (19) is fixedly connected to the top of rotating rod (20); Mounting plate (18) is fixedly connected to the circumferential inner wall of connecting sleeve (14); Plastic sleeve (25) is movably connected in mounting plate (18); Rotating sleeve (21) is rotatably connected in connecting sleeve (14), the bottom end of rotating sleeve (21) is fixedly connected with conical sleeve (23), the circumferential surface of conical sleeve (23) is provided with earth inlet, conical sleeve (23) is communicated, the circumferential inner wall of rotating sleeve (21) is fixedly connected with spiral fixed blade (22), and the bottom end of spiral fixed blade (22) is fixedly connected with conical drill (24); Transmission gear (27) is provided with two, two transmission gear (27) are fixedly connected to the circumferential surface of rotating rod (20) and rotating sleeve (21) respectively, and two transmission gear (27) are engaged.

3. A raw material sampling device for geotechnical experiments according to claim 2, characterized in that: The top of connecting handle (9) is provided with control button (10), and the rear end of connecting handle (9) is fixedly connected with intelligent display screen (16).

4. A raw material sampling device for geotechnical experiments according to claim 3, characterized in that: The bottom of connecting table (1) is fixedly connected with movable wheel (3) at the four corners, and the outer surface of connecting table (1) is fixedly connected with plastic frame (4).

5. A raw material sampling device for geotechnical testing according to claim 4, wherein: The top of connecting table (1) is provided with positioning hole (2) at the four corners, and the two ends of connecting frame (6) are fixedly connected with height scale sticker (7).

6. A raw material sampling device for geotechnical experiments according to claim 5, characterized in that: The rear end of the connecting frame (6) is fixedly connected with a plastic transparent partition plate (15), and a sealing cover (26) is movably clamped in the plastic sleeve (25).

Images