Drill hole underground water level tester

Abstract

The invention discloses a drill hole underground water level tester, and relates to the technical field of water level testing, the drill hole underground water level tester comprises a testing instrument panel, an electric winch and a mechanical probe, the testing instrument panel is electrically connected with the electric winch, and the electric winch is electrically connected with the mechanical probe; the mechanical probe comprises a probe framework, a wheel rod and a wheel, a driving part is arranged in the probe framework, the electric winch is connected through a measuring line to supply power to the driving part, one end of the wheel rod is connected with the probe framework through a connecting shaft, the other end of the wheel rod is connected with the wheel through a rotating shaft, and the driving part drives the wheel to rotate by driving the rotating shaft on the wheel rod. A spring damping fin is installed in the connecting shaft, all the wheels are tightly attached to the inner wall of the observation pipe in the working state, a rotating wheel counter is installed at the rotating shaft, and the descending distance of the mechanical probe is calculated and converted through the number of rotating turns of the wheels. By adopting a combined structure of the mechanical probe and the electric winch, the measuring line can be automatically wound and unwound, and the underground water level can be conveniently measured in a labor-saving manner for an inclined hole and a deep straight hole.

Description

Technical Field

[0001] This invention relates to the field of water level testing technology, and more specifically to a borehole groundwater level tester. Background Technology

[0002] Groundwater level is a fundamental parameter in engineering geological investigation, directly impacting foundation stability and engineering safety. The depth and variations of groundwater level determine not only the physical and mechanical properties of the soil but also its bearing capacity, shear strength, and compressibility. For example, in areas with high groundwater levels, soil is prone to seepage pressure, leading to decreased stability of engineering facilities such as slopes, foundation pits, and dam foundations. Simultaneously, periodic fluctuations in water level can trigger consolidation settlement of soft soil or cause uneven settlement of structural foundations. For underground engineering projects (such as tunnels, subways, and underground power plants), groundwater level and its variation patterns are crucial for seepage prevention, anti-surgery, and construction safety design. Therefore, groundwater level testing not only helps optimize design schemes but also provides prediction and preventative measures for potential risks during construction. In the field of environmental geology, groundwater level testing is an important tool for studying the relationship between hydrogeological conditions and the ecological environment. The level and variations of groundwater level reflect the dynamic processes of aquifer recharge, runoff, and discharge, thus providing guidance for water resource assessment and sustainable utilization. A continuous decline in groundwater levels can lead to land subsidence, wetland degradation, and ecosystem imbalance, while abnormal rises can trigger geological disasters such as landslides and collapses. Meanwhile, groundwater levels play a crucial role in controlling the migration and diffusion of pollutants, and understanding groundwater dynamics provides a scientific basis for groundwater environmental protection and pollution control. Therefore, groundwater level monitoring is not only a necessary measure to ensure regional ecological and environmental security but also a fundamental link in promoting harmonious development between humans and nature.

[0003] Currently, the most widely used methods are static water level observation, conventional electrical water level measurement, pressure sensor / water level gauge testing, float-type water level gauge, and wave generation / air pressure method.

[0004] Although the static water level observation method is simple and easy to implement, its drawback is that it requires waiting for the water level to stabilize before measurement, which is time-consuming and inefficient.

[0005] Conventional electrical water level measurement is convenient to operate and has high accuracy, but it is laborious in deep hole measurement, and the measuring line cannot be lowered and cannot be measured in boreholes with large inclinations.

[0006] Pressure sensor / water level gauge testing methods can achieve long-term, continuous monitoring, but the equipment is expensive, installation and commissioning are complex, and it is dependent on the power supply and data acquisition system. Furthermore, its applicability is limited by well diameter and water quality conditions; changes in water temperature and sediment deposition can cause sensor drift or damage, resulting in a significant maintenance workload.

[0007] Float-type water level gauges can achieve continuous water level recording, but their drawbacks include complex device structure, demanding installation conditions, and specific requirements for well diameter. If there is sediment deposition in the well or drastic water level fluctuations, the float can easily become stuck or the recording may be inaccurate. Furthermore, the equipment is relatively cumbersome to maintain, making it unsuitable for large-scale, widespread use.

[0008] The acoustic / barometric method is suitable for water level testing in special environments, but the instruments are expensive, the operation is complex, and it is quite sensitive to environmental conditions. Changes in well diameter, gas levels within the well, and temperature fluctuations can all affect measurement accuracy, thus requiring a high level of skill from the operators. This type of method is mostly used in scientific research and special engineering environments, and is difficult to extend to routine hydrogeological monitoring.

[0009] In other words, in practical applications, the commonly used methods have the following drawbacks: (1) The static water level observation method requires waiting for the water level to stabilize before measurement can be performed, which is time-consuming and inefficient; (2) Conventional electric water level gauges are difficult to replace the measuring line according to different depth requirements. If the measuring line is insufficient or damaged, the whole instrument must be purchased separately. (3) The inclined borehole water level measuring line could not be lowered, rendering it unusable; (4) When the hole depth is large, it is time-consuming and laborious to lift and store the measuring line, and the convenience of use is poor; (5) Pressure / sound wave detection systems are expensive, complicated to operate, and difficult to maintain. They are not convenient to test groundwater levels in boreholes and are not applicable.

[0010] Therefore, given the low efficiency of static water level observation, the limitations of conventional electrical water level gauges, and the high cost and complex operation of detection systems, it is necessary to develop a borehole groundwater level tester that can automatically deploy and retract measuring lines, replace measuring lines, and automatically read water level depth to improve work efficiency and data accuracy. A solution that is different from the currently used electrical water level gauges is needed, which is cost-effective and has a very wide application market. Summary of the Invention

[0011] This invention addresses the problems existing in the prior art by providing a borehole groundwater level tester; it is easy to operate, has a wide range of applications, and can realize automatic extension and retraction of the test line and automatic reading of water level depth.

[0012] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A borehole groundwater level tester includes a test instrument panel, an electric winch, and a mechanical probe. The test instrument panel is electrically connected to the electric winch, and the electric winch is electrically connected to the mechanical probe. The mechanical probe includes a probe frame, a wheel rod, and a wheel. A drive component is installed inside the probe frame, which is powered by the electric winch through a measuring line connection. One end of the wheel rod is connected to the probe frame via a connecting shaft, and the other end of the wheel rod is connected to the wheel via a rotating shaft. The drive component drives the wheel to rotate via the rotating shaft on the wheel rod. A spring damping plate is installed inside the connecting shaft, which keeps each wheel in close contact with the inner wall of the observation tube during operation. A wheel counter and an angular displacement sensor are installed at the rotating shaft, which can detect the number of wheel rotations and the change in angle in real time, and convert the signal into linear displacement information to realize the automatic acquisition and output of distance measurement data.

[0013] Based on the above technical solution, the test instrument panel is further provided with a single-pin socket, a three-pin socket, a power button, an up button, and a down button; the single-pin socket connects the test instrument panel to the water level observation tube; the three-pin socket connects the test instrument panel to the electric winch; pressing the power button on the instrument panel controls the up and down movement of the mechanical probe in the observation tube via the up and down buttons.

[0014] Based on the above technical solution, the test instrument panel is further equipped with an instrument panel LCD display, a water detection buzzer, and a charging port, through which the test instrument panel is powered.

[0015] Based on the above technical solution, the test instrument panel is further provided with a fine-tuning dial, which controls the raising and lowering of the mechanical probe in the observation tube.

[0016] Based on the above technical solution, the electric winch further includes a support and a turntable, with the turntable mounted on the support.

[0017] Based on the above technical solution, the bracket is further described as having an L-shaped structure. The bracket at the horizontal bottom contains a battery and a bidirectional motor, while the bracket at the vertical part has a rotating shaft. The battery powers the bidirectional motor, and the power output end of the bidirectional motor is connected to the rotating shaft, which is connected to the turntable.

[0018] Based on the above technical solution, the bracket is further equipped with a push-button power button, a working status indicator light, a storage compartment for storing connecting cables, a plastic cover at the opening of the storage compartment, a charging port, a charging status indicator light, an adjustable shoulder strap, a cable reel control button for controlling the cable feeding and reeling of the electric winch, a cable feeding control button, and an LCD screen that displays the battery level and the cable feeding and reeling status of the electric winch.

[0019] Based on the above technical solution, the storage compartment is further provided with a two-way three-hole socket. The inward socket is used to connect one end of the water level measuring line, and the outward socket is used to connect one end of the connection line between the electric winch and the test instrument panel.

[0020] Based on the above technical solution, the mechanical probe further includes a water contact sensor, and the water contact sensor is communicatively connected to the water contact warning buzzer.

[0021] Based on the above technical solution, the mechanical probe further includes a three-hole test line connection socket for connecting the test line.

[0022] Compared with the prior art, the present invention has the following beneficial effects: In addition to possessing the widely used functions of an electrical water level gauge, this invention employs a combination of a mechanical probe and an electric winch to achieve automatic deployment and retraction of the measuring line. It also enables labor-saving and convenient groundwater level measurement for inclined holes and deep straight boreholes. The mechanical probe incorporates a rotary counter and an angular displacement sensor, allowing direct reading of groundwater depth. The measuring line uses widely adopted three-pin connectors at both ends, enabling quick and easy replacement of measuring lines of different lengths as needed. The winch is equipped with a carrying strap for easy portability. Furthermore, this water level tester is applicable to various scenarios to meet the needs of different users, thus having a very broad market application. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the test instrument panel of the present invention; Figure 2 This is a perspective view of the electric winch of the present invention; Figure 3 This is a frontal view of the electric winch of the present invention. Figure 4 This is a side view of the electric winch of the present invention; Figure 5 This is a schematic diagram of the mechanical probe of the present invention in its stored state; Reference numerals: 1. Three-pin socket; 2. Single-pin socket; 3. Power button on instrument panel; 4. Downward button; 5. Water detection buzzer; 6. LCD display on instrument panel; 7. Fine-tuning dial; 8. Upward button; 9. Type-C charging port; 10. Adjustable shoulder strap; 11. Stand; 12. Turntable; 13. Charging port; 14. Second indicator light; 15. First indicator light; 16. Press-type power button; 17. Working status indicator light; 18. Two-way three-hole socket; 19. Storage compartment; 20. Rubber base; 21. Screw; 22. Central shaft; 23. Plastic cover; 24. Rotating shaft; 25. Nut; 26. Reel-in control button; 27. LCD display; 28. Cable release control button; 29. ​​Three-hole probe connection socket; 30. Wheel rod; 31. Wheel; 32. Rotating shaft; 33. Connecting shaft; 34. Water contact sensor; 35. Probe frame. Detailed Implementation

[0024] The present invention will be further described and illustrated below with reference to the accompanying drawings and specific embodiments. The technical features of each embodiment of the present invention can be combined accordingly, provided that there is no mutual conflict.

[0025] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below. Technical features in the various embodiments of the present invention can be combined accordingly without mutual conflict.

[0026] In the description of this invention, it should be understood that when an element is considered to be "connected" to another element, it can be a direct connection to the other element or an indirect connection, i.e., there is an intermediate element. Conversely, when an element is said to be "directly" connected to another element, there is no intermediate element.

[0027] In the description of this invention, it should be understood that the terms "first" and "second" are used only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include at least one of those features.

[0028] Example Combination Figures 1-5As shown, this embodiment provides a borehole groundwater level tester, which includes a test instrument panel, an electric winch, and a mechanical probe. The test instrument panel is electrically connected to the electric winch, and the electric winch is electrically connected to the mechanical probe. The test instrument panel is the control and data feedback component of the water level tester. Its main functions are to control the raising and lowering of the mechanical probe in the observation tube, to emit a buzzer to indicate that the mechanical probe has touched water, and to read the lowering depth of the mechanical probe. In this embodiment, the test instrument panel is equipped with an instrument panel LCD display screen 6, a single-pin socket 2, a three-pin socket 1, a water detection buzzer 5, an instrument panel power button 3, an up button 8, a down button 4, a fine-tuning dial 7, and a charging port. The body of the test instrument panel is preferably made of hard plastic, and the charging port is a type-C charging port 9, which supplies power to the instrument panel. Specifically, the instrument panel LCD display 6 is located on one side of the test instrument panel, and is used to display data such as the depth below the measuring line and the groundwater level depth; specifically, the instrument panel LCD display 6 is located on the front of the test instrument panel, above the water detection buzzer 5, and is used to display the lowering and raising depth of the mechanical probe in real time; during the lowering of the mechanical probe, when the water detection buzzer 5 sounds, the reading on the instrument panel LCD display 6 stabilizes, showing the current groundwater level depth of the test borehole. The instrument panel LCD display 6 is preferably an LCD LED screen, and can also display the current battery level of the test instrument panel; The top of the test instrument panel is equipped with a single-pin socket 2 and a three-pin socket 1, both of which are copper sockets. Specifically, the single-pin socket 2 is connected to one end of a metal wire clamp for connecting the test instrument panel and the water level observation tube, and the outer ring is wrapped with plastic. The three-pin socket 1 is connected to one end of the measuring line for connecting the test instrument panel and the electric winch. Below the LCD display screen 6 on the instrument panel, there is also a water contact warning buzzer 5. Specifically, the water contact warning buzzer 5 is located on the front of the test instrument panel. When the water contact sensor 34 on the mechanical probe comes into contact with the water surface, it will emit a buzzer warning. At the same time, the mechanical probe will stop descending, the winch will stop rotating, and the reading on the LCD display screen 6 on the instrument panel will stabilize. The water contact warning buzzer 5 consists of two buzzer alarms and is covered with an iron perforated horn mesh cover. The instrument panel also features a power button 3 on its front side, for reference. Figure 1 As shown, the power button 3 of the instrument panel is located below the water-detection buzzer 5. It is used to control the start / stop of the test instrument panel. It is controlled by pressing. Pressing it turns it on and pressing it again turns it off. The above operation is performed in a cycle. After starting, the red power symbol light of the instrument panel power button 3 lights up. After turning it off, the red light goes out. The instrument panel power button 3 is preferably made of hard frosted plastic. The front of the test instrument panel is also equipped with an up button 8 and a down button 4. The up button 8 and down button 4 are used to control the up and down movement of the mechanical probe in the borehole observation tube. Simply press the corresponding button. Preferably, the up button 8 and down button 4 are made of hard frosted plastic. When the mechanical probe is near or above the groundwater surface, the fine adjustment dial 7 can be used to adjust the mechanical probe to move up and down slightly so that it just touches the water surface. A fine-tuning dial 7 is also provided on the front of the test instrument panel. When the mechanical probe is lowered into the groundwater level or raised away from the groundwater level due to human error during the test, the rise and fall of the mechanical probe in the observation tube can be controlled by the fine-tuning dial 7, so that the water contact sensor 34 can just contact the water surface. This component is made of high-hardness plastic and has a built-in spring damping plate. It has a certain rebound effect after being flicked up or down. Its triggering mechanism is: flicking it up moves the mechanical probe up, flicking it down moves the mechanical probe down, and when it is away from the fine-tuning dial 7, the mechanical probe stops moving. A type-C charging port 9 is located at the bottom of the test instrument panel, which can be used with current electronic product charging methods to ensure compatibility.

[0029] In this embodiment, the electric winch serves as the measuring line winding and unwinding structure of the water level tester. It includes a bracket 11 and a turntable 12, with the turntable 12 mounted on the bracket 11. Both are made of high-hardness, lightweight aluminum alloy material, which reduces weight while ensuring hardness and improves portability. The surfaces are also coated with insulating paint to ensure insulation conditions. The bracket 11 is preferably L-shaped. Its horizontal bottom section houses a battery and a bidirectional motor (not shown in the figure). The vertical section of the bracket 11 has a rotating shaft 24. The battery powers the bidirectional motor, which transmits power from its output end to the rotating shaft 24 via gears or belts. The rotating shaft 24 is connected to the turntable 12. Specifically, a central shaft 22 is installed in the center hole of the turntable 12. One end of the central shaft 22 is integrally connected to one end of the rotating shaft 24. This combined structure serves both as a connection and as a load-bearing structure for the turntable 12. Therefore, it is made of high-hardness alloy steel to ensure its strength. Furthermore, the turntable 12 is surrounded by… Multiple sets of screws 21 and nuts 25 are used for fixing, and their main function is to wind and retract the test line. The maximum length of the line that can be wound and retracted is 500m. The turntable 12 is made of high-hardness lightweight aluminum alloy material with an insulating coating on the surface. That is, the driven end of the bidirectional motor is located inside the vertical support 11 and is connected to the drive motor through meshing gears. Its driving end is connected to the other end of the rotating shaft 24, thereby driving the turntable 12 fixed on it. The rotating shaft 24 is made of high-strength alloy steel. This structure controls the forward or reverse operation of the rotating shaft 24 by electric drive, providing power to the turntable 12, and powering the mechanical probe through the test line connection, thereby realizing the lowering or retraction of the test line connected to the mechanical probe. Furthermore, the bottom bracket 11 is equipped with a push-button power button 16 made of hard plastic, below which is a working status indicator light 17. On the left is a storage compartment 19 for storing the connection cable between the electric winch and the test instrument panel. After the test is completed, the connection cable between the test instrument panel and the electric winch is stored in this storage compartment 19. The opening of the storage compartment 19 is equipped with a transparent plastic cover 23 (such as an acrylic sheet). Inside the storage compartment 19 is a two-way three-hole socket 18. The inward socket is used to connect one end of the water level measuring line, and the outward socket is used to connect one end of the connection cable between the electric winch and the test instrument panel. Both are copper sockets. As for the operation of the push-button power button 16: press it to turn on, press it again to turn off. It is made of hard plastic. The bottom bracket 11 is also equipped with a charging port 13 and a charging status indicator light on its side. The charging port 13 can use a conventional three-prong plug for batteries (36V charging voltage). The charging status indicator light is used to indicate the charging status. Specifically, the charging status indicator light includes a first indicator light 15 and a second indicator light 14. The first indicator light 15 is the charging status light, and the second indicator light 14 is the fully charged status light. Both are neon lamps. The charging status indicator light is lit when the power is turned on and is turned off when the power is turned off. Each of the four corners of the bottom of the bracket 11 is equipped with a rubber base 20 to prevent grounding errors caused by the electric winch being placed on the ground during the water level test; the bases are all made of hard rubber and are fixed to the bracket 11 by screws through the center hole. Furthermore, an adjustable shoulder strap 10 made of breathable, high-elastic nylon is installed on one side of the vertical support 11 for easy carrying during field testing and to ensure comfort. The top of the vertical support 11 is equipped with a wire reel control button 26, a wire reel control button 28, and an LCD screen 27 that displays the power level and the reel status of the electric winch. Specifically, the wire reel control button 26 controls the rotation of the shaft 24, which drives the turntable 12 to rotate and complete the extraction of the test line and mechanical probe. It is made of hard frosted plastic. The wire reel control button 28 controls the rotation of the shaft 24, which drives the turntable 12 to rotate and complete the lowering of the test line and mechanical probe. It is also made of hard frosted plastic.

[0030] In this embodiment, the mechanical probe, as the core component of groundwater level testing, moves automatically along the inner wall of the observation tube under the control of the testing instrument panel. It is made of high-hardness tempered plastic, ensuring both strength and lightness. Specifically, it includes a probe frame 35, a water contact sensor 34, a wheel rod 30, and wheels 31. The probe frame 35 houses a drive unit, preferably a bidirectional drive motor, powered by an electric winch connected via a measuring line. One end of the wheel rod 30 is connected to the probe frame 35 via a connecting shaft 33, and the other end is connected to the wheels 31 via a rotating shaft 32. The bidirectional drive motor drives the rotating shaft 32 on the wheel rod 30, thereby rotating the wheels 31. The connecting shaft 33 contains a spring damping plate, ensuring that each wheel 31 is in close contact with the inner wall of the observation tube during operation. The rotating shaft 32 is equipped with a wheel counter and an angular displacement sensor, calculating and converting the number of rotations of the wheels 31 into the distance the mechanical probe descends. Specifically, the distance measurement method adopts the principle of rotating wheel distance measurement, based on the conversion relationship between rotational displacement and linear displacement. When the wheel 31 contacts and rolls along the inner wall of the observation tube, the wheel 31 maintains non-slip contact with the tube wall under ideal conditions. Each rotation of the wheel 31 corresponds to a fixed linear displacement, the length of which is equal to the circumference of the wheel. By detecting the number of rotations and angular displacement changes of the wheel 31, the length of the measured path can be calculated. Further, let the diameter of the wheel 31 be (D), and the circumference be C = D, When wheel 31 rotates n times around its own axis, the linear distance L it rolls can be expressed as: L = n × C = n × D. During implementation, the angular displacement sensor and wheel counter installed on the wheel shaft 32 can detect the number of rotations and angular changes of the wheel 31 in real time, and convert the signal into linear displacement information to realize the automatic acquisition and output of distance measurement data. Furthermore, multiple wheels 31 are provided, each wheel 31 corresponding to a wheel rod 30. At the start of operation, the connecting shafts 33 on the multiple wheel rods 30 are sequentially unfolded and placed into the observation tube. After testing, they are retracted, thereby driving the wheels 31 to move upwards or downwards. This structure is easy to store and carry, saving space. For example, refer to... Figure 5 As shown, three wheel rods 30 are mounted on the top and bottom of the mechanical probe, and are connected to the probe frame 35 via connecting shafts 33 to transmit power. All six wheel rods 30 are made of alloy material and have an insulating coating on their surface. Each wheel 31 is fixed to the rotating shaft 32 at the end of the wheel rod 30 by three sets of screws 21 and nuts 25. The rotating shaft 32 drives the wheel to rotate, enabling it to move up or down in the observation tube. All six wheels 31 are made of alloy material, with an insulating coating on their surface and a hard rubber inlay on the outer ring, which provides both insulation and anti-slip properties. Furthermore, the rotating shaft 32 is equipped with a spring damping plate. When the mechanical probe is placed into the observation tube, it can effectively ensure that each wheel 31 is in close contact with the tube wall and can rebound and buffer. The rotating shaft 32 is made of alloy material. Specifically, each wheel 31 is in contact with the tube wall of the observation tube, so that the mechanical probe is suspended in the center of the observation tube, avoiding collision damage. This solves the problem that conventional electrical water level gauges cannot lower the measuring line in inclined holes by gravity alone, and at the same time improves the overall efficiency of raising the measuring line after the groundwater level test in a deep straight hole is completed. Furthermore, the top of the mechanical probe is equipped with a three-hole measuring line connection socket 29 for connecting the measuring line, which uses a copper connector; the bottom of the mechanical probe is equipped with a water contact sensor 34, which is communicatively connected to the water contact warning buzzer 5 on the test instrument panel; specifically, the water contact sensor 34 can form a loop with the pipe wall of the observation tube, the measuring line, the metal wire clamp, the test instrument panel, and the electric winch mechanism. When the water contact warning buzzer 5 on the test instrument panel sounds an alarm, the mechanical probe stops descending, the electric winch stops rotating, and the value on the LCD display screen 6 of the test instrument panel stabilizes, indicating the water level depth of the test borehole.

[0031] In this embodiment, the mechanical probe works as follows: driven by a bidirectional drive motor inside the mechanical probe, the six connecting shafts 33 rotate synchronously. The rotating shaft 32 contains a wheel counter and an angular displacement sensor, which counts the number of rotations of the wheel 31 during the test line lowering process, converting this count into the lowering distance of the mechanical probe, and displays it in real-time on the instrument panel LCD screen 6. The wheel counter and angular displacement sensor also have a reverse counting function; when the mechanical probe moves upward, the rotating shaft 32 drives the wheel 31 to reverse, triggering the counter to count in reverse. Therefore, the distance value on the instrument panel LCD screen 6 gradually increases during the lowering process of the test line, and gradually decreases during the lifting process of the test line, until it returns to its initial position and returns to zero. The connecting shaft 33 is matched to the shaft diameter of the electric winch's rotating shaft 24 at a constant speed, ensuring that the downward or upward speed of the mechanical probe remains consistent with the lowering or retracting speed of the test line throughout the entire process, avoiding the risk of line breakage or tangling.

[0032] The overall working principle of this device is as follows: This groundwater level tester can automatically raise and lower the measuring line through the cooperation of a mechanical probe and an electric winch, and can meet the requirements of groundwater level testing in inclined holes and make deep hole water level testing more labor-saving and convenient. The number of revolutions of the rotating wheel is counted by the built-in counter in the mechanical probe and converted into distance, so that the depth of the measuring line is displayed in real time on the test instrument panel. It is easy to use, portable and has a wide range of applications. The entire operation process of this device is as follows: Step 1: Attach the clip on the metal wire clamp to the observation tube, and insert one end of the single-hole plug into the tube as shown in the image. Figure 1 On the single-hole connection socket shown; open as follows Figure 2Take out the connecting cable from the cable storage compartment 19 shown, and insert one end into it. Figure 3 In the bidirectional three-hole socket 18 shown, insert the other end as follows: Figure 1 Insert one end of the test line into the three-pin socket 1 as shown; Figure 3 The other end is inserted into the inner socket of the bidirectional three-hole socket 18 shown. Figure 5 The circuit connection is completed in the three-hole test line connection socket 29 shown. It should be noted that the metal wire clamp in this step is a connecting wire. One end of its wire is a copper spring clip, and the other end is a single-hole pin plug. One end of the spring clip is used to clamp at the opening of the observation tube, and the other end of the single-hole pin plug is used to insert into the corresponding single-hole socket 2 on the test instrument panel, thereby connecting the circuit to form a closed loop. Step 2, sequentially as follows Figure 5 The wheel rod 30 of the mechanical probe shown extends outward; Step 3, press as shown Figure 1 Turn on the test instrument panel using the power button shown on the dial, and place the mechanical probe into the observation tube. Step 4, press as shown Figure 3 The push-button power switch 16 shown indicates that the electric winch is started. Press as shown. Figure 2 The electric winch shown has a wire feeding control button 28. The turntable 12 rotates to start feeding out the measuring line. Step 5, press as shown Figure 1 As shown by button 4, the mechanical probe begins to descend along the observation tube. At this time, the mechanical probe descends along the observation tube at the same speed as the measuring line, as... Figure 1 The instrument panel LCD screen 6 in the middle begins to dynamically display the descent depth of the mechanical probe; Step 6, when Figure 5 When the water sensor 34 shown comes into contact with the groundwater level, such as Figure 1 The indicated water detection alarm 5 will sound, and the mechanical probe will stop descending. Figure 1 The reading on the instrument panel LCD screen 6 is stable, and the value at this time is the groundwater level depth of the borehole. Step 7: After recording the data, first press as follows Figure 1 The mechanical probe's upward button 8 on the test instrument panel is shown. Pressing it randomly will result in... Figure 2 The reel control button 26, as shown, will stop the alarm on buzzer 5 when water is detected. At this time, the mechanical probe and the measuring line will begin to rise at the same speed. If no water level data is recorded after the line is started to rise, immediately move the button downwards as shown. Figure 1 The fine-tuning dial 7 shown causes the mechanical probe to descend and the measuring line to continue to go down until the buzzer 5 sounds again when water is encountered. Then, the water level data is recorded in the same step 6. Step 8: After the upper part of the mechanical probe extends out of the observation tube, manually remove the mechanical probe completely and close the shutter. Figure 1Turn off the instrument panel power button 3, turn off the push-button power button 16, disconnect the test line from the two-way three-hole connector 18, and store the mechanical probe as shown. Figure 5 As shown in the diagram, remove the metal clip from the observation tube, disconnect the wire clamp from the single-pin socket 2 on the top of the test instrument panel and the connecting wire from the three-pin socket 1, and retract the connecting wire as shown. Figure 2 The connecting cable storage compartment 19 shown is fastened as follows: Figure 2 The plastic cover 23 of the storage compartment 19 shown is used to organize and store all components in a special shoulder bag. After completing the groundwater level test of the borehole, the person leaves with the measuring instrument.

[0033] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, and is not intended to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of the present invention do not depart from the essence and scope of the technical solution of the present invention.

Claims

1. A borehole groundwater level tester, characterized in that, It includes a test instrument panel, an electric winch, and a mechanical probe. The test instrument panel is electrically connected to the electric winch, and the electric winch is electrically connected to the mechanical probe. The mechanical probe consists of a probe frame, a wheel rod, and wheels. The probe frame contains a drive unit, which is powered by an electric winch connected to the measuring line. One end of the wheel rod is connected to the probe frame via a connecting shaft, and the other end of the wheel rod is connected to the wheels via a rotating shaft. The drive unit drives the wheels to rotate via the rotating shaft on the drive wheel rod. The connecting shaft contains a spring damping plate, which keeps each wheel in close contact with the inner wall of the observation tube during operation. A wheel counter is installed at the rotating shaft, and the number of wheel rotations is calculated and converted into the distance the mechanical probe is lowered.

2. The borehole groundwater level tester according to claim 1, characterized in that, The test instrument panel is equipped with a single-pin socket, a three-pin socket, a power button, an up button, and a down button. The single-pin socket connects the test instrument panel to the water level observation tube. The three-pin socket connects the test instrument panel to the electric winch. Pressing the power button on the instrument panel controls the up and down movement of the mechanical probe in the observation tube via the up and down buttons.

3. The borehole groundwater level tester according to claim 1, characterized in that, The test instrument panel is also equipped with an LCD display screen, a water detection buzzer, and a charging port, which powers the test instrument panel.

4. The borehole groundwater level tester according to claim 1, characterized in that, The test instrument panel is also equipped with a fine-tuning dial, which controls the raising and lowering of the mechanical probe in the observation tube.

5. A borehole groundwater level tester according to claim 1, characterized in that, The electric winch includes a support frame and a turntable, with the turntable mounted on the support frame.

6. A borehole groundwater level tester according to claim 5, characterized in that, The bracket has an L-shaped structure. The horizontal bottom bracket contains a battery and a bidirectional motor. The vertical part of the bracket has a rotating shaft. The battery powers the bidirectional motor. The power output end of the bidirectional motor is connected to the rotating shaft, which is connected to the turntable.

7. A borehole groundwater level tester according to claim 5, characterized in that, The bracket is equipped with a push-button power button, a working status indicator light, a storage compartment for the connecting cable, a plastic cover at the opening of the storage compartment, a charging port, a charging status indicator light, an adjustable shoulder strap, a cable reel control button for controlling the cable release and reeling of the electric winch, a cable release control button, and an LCD screen that displays the battery level and the cable release / reeling status of the electric winch.

8. A borehole groundwater level tester according to claim 7, characterized in that, The storage compartment is equipped with a two-way three-hole socket. The inward-facing socket is used to connect one end of the water level measuring line, and the outward-facing socket is used to connect one end of the connection line between the electric winch and the test instrument panel.

9. A borehole groundwater level tester according to claim 3, characterized in that, The mechanical probe includes a water contact sensor, and the water contact sensor is communicatively connected to the water contact warning buzzer.

10. A borehole groundwater level tester according to claim 1, characterized in that, The mechanical probe also includes a three-hole test line connection socket for connecting test lines.

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