Geotechnical engineering exploration device and method

Abstract

The invention belongs to the field of geotechnical engineering exploration devices, and particularly relates to a geotechnical engineering exploration device which comprises a main body, wheel columns are fixedly connected to the bottom end of the main body, wheels are arranged in the wheel columns, a limiting mechanism is arranged at the bottom end of the main body, a handle is fixedly connected to the main body, and a discharging pipe is arranged on the main body. And an anti-blocking mechanism is arranged in the discharging pipe. According to the scheme, by designing parts such as the mounting strip, the rotating rod, the handle, the second bearing, the annular sleeve and the guide rod, the rotating rod is rotated to drive parts such as a stirring rod to rotate, the stirring rod rotates to stir a rock-soil sample in the discharging pipe, and then the situation that the working efficiency of the device is reduced due to the fact that the rock-soil sample is blocked in the discharging pipe is prevented.

Description

Technical Field

[0001] The present invention belongs to the field of geotechnical engineering exploration equipment, and in particular relates to a geotechnical engineering exploration equipment and method. Background Art

[0002] Engineering survey is an indispensable preliminary work for engineering construction, which plays a vital role in ensuring the safety, economy and sustainability of the project. In the field of geotechnical engineering, exploration sampling is a key step in obtaining underground soil information, which directly affects the accuracy and reliability of engineering design. With the acceleration of urbanization and the increase in the complexity of engineering construction, the performance requirements for geotechnical engineering exploration sampling devices are becoming higher and higher.

[0003] In the process of geotechnical engineering exploration, the use of exploration sampling devices is crucial. Traditional exploration sampling methods have many shortcomings, such as low efficiency, inaccurate sampling, and inability to adapt to different geological conditions. In order to solve these problems, a large number of technological innovations and equipment improvements have been carried out in the industry.

[0004] For example, the Chinese patent publication number CN217179967U proposes a geotechnical engineering exploration sampling device, which relates to the field of geological exploration technology. The geotechnical engineering exploration sampling device aims to solve the technical problems that the existing technology cannot automatically sample and process the rock and soil, and cannot sample and process the rock and soil at different depths. The geotechnical engineering exploration sampling device includes a bottom plate; a universal wheel is arranged at the bottom end of the bottom plate, and the universal wheel is arranged in four groups; a fixed side plate is fixedly installed at the upper end of the bottom plate, a handle is fixedly installed on the outer side of the fixed side plate, a lifting assembly is arranged on the inner side of the fixed side plate, and a fixed cylinder is fixedly installed on the outer side of the lifting assembly. The geotechnical engineering exploration sampling device only needs to drive the fixed cylinder downward through the lifting assembly, and the rock and soil are mined through the mining assembly. The rock and soil are introduced into the collection assembly along the fixed cylinder, and the samples are collected through the collection assembly, thereby realizing automatic sampling of the rock and soil and sampling and processing of the rock and soil at different depths.

[0005] Based on an in-depth analysis of the existing device, we found that the main problems are as follows: when the device reaches the specified position, the device has no limiting mechanism, and the wheels are inconvenient to limit, which may cause the device to be placed unstably at the specified position; and the device has no anti-blocking mechanism, and the rock and soil samples may be blocked in the discharge pipe, resulting in reduced working efficiency of the device. Summary of the invention

[0006] The object of the present invention is to provide a geotechnical engineering exploration device, which solves the problem that when the device reaches a specified position, the device has no limiting mechanism, the wheels are inconvenient to be limited, resulting in the device being placed unstably at the specified position, and the device has no anti-blocking mechanism, the geotechnical samples may be blocked in the discharge pipe, resulting in reduced working efficiency of the device.

[0007] In order to achieve the above-mentioned object, the present invention provides a geotechnical engineering exploration device, comprising a main body, a wheel column is fixedly connected to the bottom end of the main body, a wheel is arranged inside the wheel column, a limit mechanism is arranged at the bottom end of the main body, a handle is fixedly connected to the main body, a discharge pipe is arranged on the main body, and an anti-blocking mechanism is arranged inside the discharge pipe; The limiting mechanism includes a connecting sleeve, the bottom end of the main body is fixedly connected to the connecting sleeve, the interior of the connecting sleeve is slidably connected to a sliding plate, the interior of the sliding plate is threadedly connected to a screw rod, the screw rod is fixedly connected to a rotating block, the interior of the connecting sleeve is rotatably connected to the screw rod, the interior of the sliding plate is slidably connected to a guide rod, and both ends of the guide rod are fixedly connected to the connecting sleeve; The sliding plate is fixedly connected with a connecting block, the connecting block is fixedly connected with a limiting block, and the limiting block contacts a wheel; the connecting sleeve is fixedly sleeved with a first bearing inside, and the first bearing is fixedly sleeved with a screw inside; the sliding plate is clamped with an elastic clamping block inside, and the elastic clamping block is fixedly connected with a connecting sleeve; The anti-blocking mechanism includes a mounting bar, the inside of the discharge pipe is fixedly connected to the mounting bar, the inside of the mounting bar is rotatably connected to a rotating rod, the outside of the rotating rod is fixedly connected to an annular sleeve, the inside of the annular sleeve is slidably connected to a guide rod, the two ends of the guide rod are fixedly connected to the discharge pipe, the outside of the rotating rod is fixedly connected to a stirring rod; the top of the rotating rod is fixedly connected to a handle; the inside of the mounting bar is fixedly sleeved with a second bearing, and the inside of the second bearing is fixedly sleeved with a rotating rod.

[0008] The principle of the present invention is that when the device reaches the designated position, the rotating block is manually rotated, the rotating block drives the screw to rotate, the screw rotates and the sliding plate generates a threaded motion, and then the sliding plate is relatively displaced, the sliding plate moves and drives the connecting block to move, the connecting block moves and drives the limit block to move, the limit block moves and contacts the wheel, the elastic block is stuck in the sliding plate, and then the wheel is limited, so that the device is placed stably at the designated position. The sliding plate can be limited by designing the elastic block.

[0009] When the discharge pipe on the device is blocked, the handle is turned, and the rotation of the handle drives the rotating rod to rotate, and the rotation of the rotating rod drives the stirring rod and the annular sleeve to rotate, and the annular sleeve rotates and slides with the guide rod, and the stirring rod rotates to stir the rock and soil samples in the discharge pipe, thereby preventing the rock and soil samples from being blocked in the discharge pipe, which reduces the working efficiency of the device. By designing a second bearing, it can be used to support the rotation of the rotating rod. By rotating the rotating rod, the rotation of the rotating rod drives the stirring rod and other components to rotate, and the stirring rod rotates to stir the rock and soil samples in the discharge pipe, thereby preventing the rock and soil samples from being blocked in the discharge pipe, which reduces the working efficiency of the device.

[0010] The beneficial effects of the present invention are as follows: the present invention designs components such as mounting bars, rotating rods, handles, second bearings, annular sleeves and guide rods, and manually rotates the rotating rod, which drives the stirring rod and other components to rotate, and the stirring rod rotates to stir the rock and soil samples in the discharge pipe, thereby preventing the rock and soil samples from being blocked in the discharge pipe, which reduces the working efficiency of the device; by designing components such as connecting sleeves, sliding plates, screws, rotating blocks, first bearings and guide rods, the rotating screw and the sliding plate undergo threaded motion, the movement of the sliding plate drives the movement of components such as the limit block, the limit block moves and contacts the wheel, the elastic block is stuck in the sliding plate, and the wheel is limited, so that the device is placed stably at the specified position. By designing the first bearing, it can be used to support the rotation of the screw.

[0011] Furthermore, it also includes a controller and at least one first strain gauge, the first strain gauge is attached between the rotating rod and the handle, and is used to detect the resistance information during the rotation process; at least two second strain gauges are attached to the surface of the stirring rod, and the second strain gauge is used to detect the relative pressure information between the stirring rod and the rock and soil; the surface of the stirring rod is also attached to a conductive contact; the controller is connected to the conductive contact, the first strain gauge and the second strain gauge respectively; the controller is used to receive the resistance information and relative pressure information of the first strain gauge and the second strain gauge, and the controller is also used to measure the conductivity of the rock and soil sample after the second strain gauge has a reading, and determine the hardness of the rock and soil sample and the compressibility of the rock and soil according to a preset logical judgment rule.

[0012] The controller realizes real-time monitoring and control of the rotating rod and the stirring rod by connecting with the first strain gauge and at least two second strain gauges. The first strain gauge is attached between the rotating rod and the handle to detect the resistance information during the rotation process. The information reflects the resistance encountered by the rotating rod during the rotation process, so as to evaluate the hardness of the rock and soil and the working state of the device.

[0013] At least two second strain gauges are attached to the surface of the stirring rod to detect the relative pressure information between the stirring rod and the rock and soil. These strain gauges can measure the pressure changes on the stirring rod during the stirring process, thereby determining the hardness and compressibility of the rock and soil. In addition, conductive contacts are attached to the surface of the stirring rod to measure the conductivity of the rock and soil sample after the second strain gauge has a reading.

[0014] The controller receives information from the first strain gauge and the second strain gauge and processes it according to the preset logic judgment rules. When the relative pressure detected by the second strain gauge exceeds the normal range, the controller will intermittently control the force-applying part in the electromagnetic clutch to extend or shorten, thereby adjusting the rotation resistance of the rotating rod and the stirring rod to ensure the stable operation of the device.

[0015] Furthermore, the controller is also used to determine the rock and soil hardness according to the peak value of the pressure information of the second strain gauge and the value change between adjacent second strain gauges.

[0016] During the exploration process, the stirring rod contacts and stirs the rock and soil, and at least two second strain gauges detect the relative pressure at different positions. These strain gauges can sensitively capture the reaction force of the rock and soil on the stirring rod, that is, the hardness of the rock and soil.

[0017] The controller receives signals from the second strain gauge, especially the peak value of the pressure information and the numerical changes between adjacent strain gauges. The peak value usually represents the maximum reaction force of the rock and soil on the stirring rod, and the numerical changes between adjacent strain gauges reflect the distribution of this force. The algorithm in the controller analyzes these data and evaluates the hardness of the rock and soil by comparing the peak values ​​and change trends at different positions. This avoids reading erroneous data when a single second strain gauge directly reads the peak data because the position of the rock and soil changes (not the shape but the position). Through the cooperation of at least two second strain gauges, on the one hand, the efficiency of data acquisition is improved, and on the other hand, the two data can verify each other at the peak data, thereby improving the accuracy of peak data reading.

[0018] Furthermore, the controller is also used to determine the compressibility of the rock and soil according to the speed of change of the value of the second strain gauge.

[0019] Furthermore, the controller is also used to receive the reading of the first strain gauge to determine whether the rotational resistance of the rotating rod exceeds a preset threshold value, and if so, send a signal of the stabilization device; receive the reading of the second strain gauge to determine whether the relative pressure between the stirring rod and the rock and soil is within a normal range, and if so, generate a prompt instruction.

[0020] Furthermore, the controller is also used to collect the peak value of the pressure information of the second strain gauge, compare the numerical changes between adjacent second strain gauges, and determine the hardness of the rock and soil based on the numerical changes; then monitor the numerical change speed of the second strain gauge, and evaluate the compressibility of the rock and soil based on the numerical change speed.

[0021] When the resistance to the rotating rod exceeds a preset threshold, the first strain gauge detects this change and sends a signal to the controller. The controller then analyzes this reading to determine whether measures need to be taken to stabilize the device. For example, when the resistance to the rotating rod is too large, which may cause the device to move or become unstable, the controller will send a signal to activate the device's stabilization mechanism, such as starting the limit mechanism or adjusting the lifting assembly to ensure the stability of the device. The second strain gauge is attached to the surface of the stirring rod and is used to monitor the relative pressure between the stirring rod and the rock and soil. The controller receives these readings and evaluates the compressibility of the rock and soil based on the speed of change of the values. When the pressure detected by the second strain gauge exceeds the normal range, the controller will generate a prompt instruction to inform the operator that there may be a hard rock and soil layer, and it is necessary to adjust the operating parameters or take other measures. The conductive contacts on the surface of the stirring rod are used to measure the conductivity of the rock and soil samples after the second strain gauge has a reading. This data is critical to evaluating the physical properties of the rock and soil, and the controller will adjust the exploration strategy based on this data to adapt to different rock and soil conditions.

[0022] The controller can monitor the readings of the first and second strain gauges in real time and respond quickly based on these data, thereby improving the safety and efficiency of the exploration process. By analyzing the speed of change of the value of the second strain gauge, the controller can more accurately assess the compressibility of the rock and soil, which is crucial for engineering design and construction.

[0023] Furthermore, an electromagnetic clutch is provided between the rotating rod and the handle, and the rotating rod and the handle are rotationally connected, and the electromagnetic clutch includes a force-applying part, a clutch plate and a friction plate; the force-applying part is fixedly connected to the handle, and the handle is provided with a accommodating cavity for accommodating the force-applying part, the end of the force-applying part is fixedly connected to the clutch plate, the friction plate is fixedly connected to the rotating rod, and the position of the friction plate is opposite to the clutch plate; the controller is connected to the signal of the force-applying part; the controller is also used to intermittently control the extension or shortening of the force-applying part when the relative pressure between the stirring rod and the rock and soil exceeds the normal range.

[0024] The electromagnetic clutch is a key automatic actuator component used to control the power transmission between the rotating rod and the handle. The electromagnetic clutch includes a force-applying part, a clutch plate and a friction plate, wherein the force-applying part is fixedly connected to the handle and accommodated in a receiving cavity on the handle. The end of the force-applying part is fixedly connected to the clutch plate, while the friction plate is fixedly connected to the rotating rod and is located opposite to the clutch plate.

[0025] When the electromagnetic clutch is not powered, there is no contact between the clutch plate and the friction plate, and the rotating rod cannot obtain power from the rotation of the handle, that is, they are in a separated state. When the electromagnetic clutch is powered, the current flows through the electromagnetic coil of the force-applying part, generating a magnetic field, attracting the clutch plate to move toward the friction plate, thereby achieving contact and friction between the two, so that the rotating rod can rotate with the handle, that is, they are in an engaged state.

[0026] The controller is connected to the signal of the force-applying part, and can judge the relative pressure between the stirring rod and the rock and soil based on the real-time data from the second strain gauge. When this relative pressure exceeds the normal range, the controller will send a signal to intermittently control the extension or shortening of the force-applying part. This control mechanism allows the electromagnetic clutch to protect the device from damage by adjusting the degree of contact between the clutch plate and the friction plate under high pressure conditions. In addition, this pulsed combination can enable intermittent stirring and crushing when encountering rock and soil with higher hardness. On the one hand, the possibility of crushing is increased through impact force, and on the other hand, if it cannot be crushed, the possibility of passing is increased to avoid continuous blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A three-dimensional diagram of the overall structure of a geotechnical engineering exploration device according to an embodiment of the present invention; Figure 2 The geotechnical engineering exploration device of the embodiment of the present invention Figure 1 A sectional stereogram of the overall structure; Figure 3 The geotechnical engineering exploration device of the embodiment of the present invention Figure 1 A front view of Figure 4 The geotechnical engineering exploration device of the embodiment of the present invention Figure 2 A magnified image of point A; Figure 5 The geotechnical engineering exploration device of the embodiment of the present invention Figure 3 Enlarged view of the discharge pipe. DETAILED DESCRIPTION

[0029] The following is further described in detail through specific implementation methods: The marks in the drawings of the specification include: main body 1, wheel column 2, wheel 3, limiting mechanism 4, connecting sleeve 41, sliding plate 42, screw 43, rotating block 44, first bearing 45, guide rod 46, elastic block 47, connecting block 48, limiting block 49, handle 5, discharge pipe 6, anti-blocking mechanism 7, mounting strip 71, rotating rod 72, handle 73, second bearing 74, annular sleeve 75, guide rod 76, stirring rod 77.

[0030] Example 1 like Figure 1 — Figure 5 As shown, this embodiment provides a geotechnical engineering exploration device, including a main body 1, a wheel column 2 is fixedly connected to the bottom end of the main body 1, a wheel 3 is arranged inside the wheel column 2, a limiting mechanism 4 is arranged at the bottom end of the main body 1, a handle 5 is fixedly connected to the main body 1, a discharge pipe 6 is arranged on the main body 1, and an anti-blocking mechanism 7 is arranged inside the discharge pipe 6.

[0031] like Figure 4 As shown, the limiting mechanism 4 includes a connecting sleeve 41, the bottom end of the main body 1 is fixedly connected with the connecting sleeve 41, the interior of the connecting sleeve 41 is slidably connected with a sliding plate 42, the interior of the sliding plate 42 is threadedly connected with a screw 43, and the screw 43 is fixedly connected with a rotating block 44. The interior of the connecting sleeve 41 is fixedly sleeved with a first bearing 45, and the interior of the first bearing 45 is fixedly sleeved with the screw 43. The first bearing 45 is designed to support the rotation of the screw 43. The interior of the connecting sleeve 41 is rotatably connected to the screw 43, and the interior of the sliding plate 42 is slidably connected with a guide rod 46. Both ends of the guide rod 46 are fixedly connected to the connecting sleeve 41. An elastic card block 47 is clamped inside the sliding plate 42, and the upper part of the elastic card block 47 is fixedly connected to the connecting sleeve 41. By designing the elastic card block 47, the sliding plate 42 can be limited. A connecting block 48 is fixedly connected to the sliding plate 42, and a limiting block 49 is fixedly connected to the connecting block 48. The limiting block 49 contacts the wheel 3. By rotating the screw 43 and the sliding plate 42 to generate threaded motion, the sliding plate 42 moves and drives the limiting block 49 and other components to move. The limiting block 49 moves and contacts the wheel 3, and the elastic card block 47 is clamped into the sliding plate 42, so that the wheel 3 is limited, so that the device is stably placed at the specified position.

[0032] like Figure 5 The cam 72 is a substantially parallelogram of the cam 74, which is a substantially parallelogram of the cam 74. The cam 72 is a substantially parallelogram of the cam 74, which is a substantially parallelogram of the cam 74. The cam 72 is substantially parallelogram of the cam 74, which is a substantially parallelogram of the cam 74.

[0033] The specific implementation process of the present invention is as follows: geotechnical engineering exploration has been disclosed in the patent with the authorization announcement number CN217179967U; When the device reaches the designated position, the rotating block 44 is rotated, and the rotating block 44 drives the screw 43 to rotate, and the screw 43 rotates to generate a threaded motion with the sliding plate 42, so that the sliding plate 42 is relatively displaced, and the movement of the sliding plate 42 drives the connecting block 48 to move, and the movement of the connecting block 48 drives the limit block 49 to move, and the limit block 49 moves to contact the wheel 3, and the elastic block 47 is inserted into the sliding plate 42, so that the wheel 3 is limited, so that the device is placed stably at the designated position; When the discharge pipe 6 on the device is blocked, turn the handle 73. The rotation of the handle 73 drives the rotating rod 72 to rotate. The rotation of the rotating rod 72 drives the stirring rod 77 and the annular sleeve 75 to rotate. The annular sleeve 75 rotates and slides with the guide rod 76. The stirring rod 77 rotates to stir the rock and soil samples in the discharge pipe 6, thereby preventing the rock and soil samples from being blocked in the discharge pipe 6, which reduces the working efficiency of the device.

[0034] The present invention designs components such as mounting strip 71, rotating rod 72, handle 73, second bearing 74, annular sleeve 75 and guide rod 76, and rotates rotating rod 72. The rotation of rotating rod 72 drives components such as stirring rod 77 to rotate. The stirring rod 77 rotates to stir the rock and soil samples in discharge pipe 6, thereby preventing the rock and soil samples from being blocked in discharge pipe 6 and reducing the working efficiency of the device. The present invention designs components such as connecting sleeve 41, sliding plate 42, screw 43, rotating block 44, first bearing 45 and guide rod 46, and rotates screw 43 to generate threaded motion with sliding plate 42. The movement of sliding plate 42 drives components such as limit block 49 to move. Limit block 49 moves to contact wheel 3, and elastic block 47 is inserted into sliding plate 42, thereby limiting wheel 3 and making the device stably placed in the designated position.

[0035] Example 2 Compared with the embodiment 1, the only difference is that it also includes a controller and at least one first strain gauge (not shown), the first strain gauge is attached between the rotating rod 72 and the handle 73, and is used to detect the resistance information during the rotation process; at least two second strain gauges (not shown) are attached to the surface of the stirring rod 77, and the second strain gauge is used to detect the relative pressure information between the stirring rod 77 and the rock and soil; the surface of the stirring rod 77 is also attached with a conductive contact (not shown); the controller is connected to the conductive contact, the first strain gauge and the second strain gauge respectively; the controller is used to receive the resistance information and relative pressure information of the first strain gauge and the second strain gauge, and the controller is also used to measure the conductivity of the rock and soil sample after the second strain gauge has a reading, and determine the hardness of the rock and soil sample and the compressibility of the rock and soil according to the preset logical judgment rules. The controller is also used to determine the hardness of the rock and soil according to the peak value of the pressure information of the second strain gauge and the value change between adjacent second strain gauges. The controller is also used to determine the compressibility of the rock and soil according to the value change speed of the second strain gauge. The controller is also used to receive the reading of the first strain gauge, determine whether the rotation resistance of the rotating rod 72 exceeds the preset threshold, and if so, send a signal of the stabilizing device; receive the reading of the second strain gauge, determine whether the relative pressure between the stirring rod 77 and the rock and soil is within the normal range, and if it exceeds the range, generate a prompt instruction. The controller is also used to collect the peak value of the pressure information of the second strain gauge, compare the value changes between adjacent second strain gauges, and determine the hardness of the rock and soil according to the value changes; then monitor the value change speed of the second strain gauge, and evaluate the compressibility of the rock and soil according to the value change speed.

[0036] An electromagnetic clutch is provided between the rotating rod 72 and the handle 73, and the rotating rod 72 and the handle 73 are rotationally connected. The electromagnetic clutch includes a force-applying part, a clutch plate and a friction plate; the force-applying part is fixedly connected to the handle 73, and the handle 73 is provided with a accommodating cavity for accommodating the force-applying part, the end of the force-applying part is fixedly connected to the clutch plate, the friction plate is fixedly connected to the rotating rod 72, and the position of the friction plate is opposite to the clutch plate; the controller is connected to the signal of the force-applying part; the controller is also used to intermittently control the extension or shortening of the force-applying part when the relative pressure between the stirring rod 77 and the rock and soil exceeds the normal range.

[0037] When used specifically: the first strain gauge is installed between the rotating rod 72 and the handle 73, and is used to monitor the resistance during the rotation process in real time. The strain gauge can detect the force applied by the handle to the rotating rod 72 and convert the force into an electrical signal. At least two second strain gauges are installed on the surface of the stirring rod 77 to detect the relative pressure between the stirring rod 77 and the rock and soil. These strain gauges can measure the pressure response of the rock and soil at different depths to the stirring rod 77. The conductive contact is installed on the surface of the stirring rod 77, adjacent to the second strain gauge, and is used to measure the conductivity of the rock and soil sample after obtaining the second strain gauge reading.

[0038] The controller is connected to the first strain gauge, the second strain gauge and the conductive contacts via wires or wireless signals (wires in this embodiment) to receive and process the data collected by these sensors.

[0039] The controller receives the resistance change information of the first strain gauge and the second strain gauge in real time, and converts these changes into resistance and pressure values. When the second strain gauge detects the pressure information, the conductive contact starts to work, and the controller records the conductivity data.

[0040] The controller analyzes the peak value of the pressure information of the second strain gauge and the value change between adjacent strain gauges according to the preset logical judgment rules to determine the hardness of the rock and soil. The controller monitors the value change speed of the second strain gauge to evaluate the compressibility of the rock and soil. When the reading of the first strain gauge exceeds the preset threshold, the controller determines that the rotation resistance of the rotating rod 72 is too large and sends a signal of the stabilization device, such as starting the limit mechanism 4 or adjusting the lifting component. When the reading of the second strain gauge exceeds the normal range, the controller generates a prompt instruction to notify the operator to take corresponding measures (in this embodiment, the operator's smartphone is notified through the Bluetooth module).

[0041] An electromagnetic clutch is provided between the rotating rod 72 and the handle 73, including a force-applying part (a linear motor is used in this embodiment), a clutch plate and a friction plate. The force-applying part is fixedly connected to the handle 73 and accommodated in a receiving cavity on the handle 73. When the relative pressure between the stirring rod 77 and the rock and soil exceeds the normal range, the controller intermittently controls the extension or shortening of the force-applying part through the signal line, thereby adjusting the contact degree between the clutch plate and the friction plate, and realizing the control of the rotation of the rotating rod 72.

[0042] In specific use, it is assumed that the preset resistance threshold is 500 Newtons (N), which is the safety upper limit determined when the device is designed. If the resistance detected by the first strain gauge reaches or exceeds 500N, the controller will determine that the rotating rod 72 encounters excessive resistance. The controller will send a signal to the electromagnetic clutch to adjust the friction between the clutch plate and the friction plate, for example, to reduce the friction to reduce the resistance.

[0043] The pressure range detected by the second strain gauge is between 100N and 400N. The controller organizes the data collected by the second strain gauge according to a 5s cycle to determine the peak value within a cycle. The controller also analyzes the speed of change of the pressure data within the cycle. When the change speed is fast, the controller may determine that this significant value change indicates that a rock layer with higher hardness has been encountered.

[0044] When the pressure of the second strain gauge tends to be stable in multiple cycles, the pressure slowly decreases and enters the next stable state, which indicates that the rock and soil has high compressibility.

[0045] The conductive contacts read the data only when the pressure of the second strain gauge tends to be stable after multiple cycles, thus ensuring the accuracy of data collection.

[0046] It should be noted in advance that, in the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] The above is only an embodiment of the present invention, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A geotechnical engineering exploration device, comprising a main body, characterized in that: The bottom end of the main body is fixedly connected to a wheel column, a wheel is arranged inside the wheel column, a limit mechanism is arranged at the bottom end of the main body, a handle is fixedly connected to the main body, a discharge pipe is arranged on the main body, and an anti-blocking mechanism is arranged inside the discharge pipe; The limiting mechanism includes a connecting sleeve, the bottom end of the main body is fixedly connected to the connecting sleeve, the interior of the connecting sleeve is slidably connected to a sliding plate, the interior of the sliding plate is threadedly connected to a screw rod, the screw rod is fixedly connected to a rotating block, the interior of the connecting sleeve is rotatably connected to the screw rod, the interior of the sliding plate is slidably connected to a guide rod, and both ends of the guide rod are fixedly connected to the connecting sleeve; The sliding plate is fixedly connected with a connecting block, the connecting block is fixedly connected with a limiting block, and the limiting block contacts a wheel; the connecting sleeve is fixedly sleeved with a first bearing inside, and the first bearing is fixedly sleeved with a screw inside; the sliding plate is clamped with an elastic clamping block inside, and the elastic clamping block is fixedly connected with a connecting sleeve; The anti-blocking mechanism includes a mounting bar, the inside of the discharge pipe is fixedly connected to the mounting bar, the inside of the mounting bar is rotatably connected to a rotating rod, the outside of the rotating rod is fixedly connected to an annular sleeve, the inside of the annular sleeve is slidably connected to a guide rod, the two ends of the guide rod are fixedly connected to the discharge pipe, the outside of the rotating rod is fixedly connected to a stirring rod; the top of the rotating rod is fixedly connected to a handle; the inside of the mounting bar is fixedly sleeved with a second bearing, and the inside of the second bearing is fixedly sleeved with a rotating rod.

2. A geotechnical engineering exploration device according to claim 1, characterized in that: It also includes a controller and at least one first strain gauge, wherein the first strain gauge is attached between the rotating rod and the handle and is used to detect the resistance information during the rotation process; at least two second strain gauges are attached to the surface of the stirring rod, and the second strain gauge is used to detect the relative pressure information between the stirring rod and the rock and soil; the surface of the stirring rod is also attached to a conductive contact; the controller is connected to the conductive contact, the first strain gauge and the second strain gauge respectively; the controller is used to receive the resistance information and relative pressure information of the first strain gauge and the second strain gauge, and the controller is also used to measure the conductivity of the rock and soil sample after the second strain gauge has a reading, and determine the hardness of the rock and soil sample and the compressibility of the rock and soil according to a preset logical judgment rule.

3. A geotechnical engineering exploration device according to claim 2, characterized in that: The controller is also used to determine the rock and soil hardness according to the peak value of the pressure information of the second strain gauge and the value change between adjacent second strain gauges.

4. A geotechnical engineering exploration device according to claim 3, characterized in that: The controller is also used to determine the compressibility of the rock and soil according to the speed of change of the value of the second strain gauge.

5. A geotechnical engineering exploration device according to claim 4, characterized in that: The controller is also used to receive the reading of the first strain gauge to determine whether the rotational resistance of the rotating rod exceeds a preset threshold value, and if so, send a signal to the stabilization device; receive the reading of the second strain gauge to determine whether the relative pressure between the stirring rod and the rock and soil is within a normal range, and if so, generate a prompt instruction.

6. A geotechnical engineering exploration device according to claim 5, characterized in that: The controller is also used to collect the peak value of the pressure information of the second strain gauge, compare the numerical changes between adjacent second strain gauges, and determine the hardness of the rock and soil according to the numerical changes; then monitor the numerical change speed of the second strain gauge, and evaluate the compressibility of the rock and soil according to the numerical change speed.

7. A geotechnical engineering exploration device according to claim 6, characterized in that: An electromagnetic clutch is provided between the rotating rod and the handle, and the rotating rod and the handle are rotationally connected, and the electromagnetic clutch includes a force-applying part, a clutch plate and a friction plate; the force-applying part is fixedly connected to the handle, and the handle is provided with a receiving cavity for accommodating the force-applying part, the end of the force-applying part is fixedly connected to the clutch plate, the friction plate is fixedly connected to the rotating rod, and the position of the friction plate is opposite to the clutch plate; the controller is connected to the signal of the force-applying part; the controller is also used to intermittently control the extension or shortening of the force-applying part when the relative pressure between the stirring rod and the rock and soil exceeds the normal range.

8. A geotechnical engineering exploration method, characterized in that: A device as described in any one of claims 1 to 7 is used.

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