Surveying underground water level measuring instrument for geotechnical engineering
By setting up protective components and elastic limiting components, the problem of the probe colliding with the well wall due to cable swinging or water fluctuations during the lowering process was solved, thus achieving probe fixation and accuracy of measurement results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-08
- Publication Date
- 2026-04-10
AI Technical Summary
During the lowering process, the probe of existing groundwater level measuring instruments is prone to collision with the well wall due to cable swinging or groundwater fluctuations, which affects the service life and accuracy of the measurement results.
Using protective components and elastic limiting components, the connecting rod unfolds by using the separation of the insertion rod and the inertial action of the insertion tube, and the elastic force of the elastic limiting component to fix the probe position and avoid collision with the well wall.
It effectively protects the probe from damage, improving the accuracy of measurement results and extending the probe's lifespan.
Smart Images
Figure CN121829700A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of underground water level measurement, in particular to a survey underground water level measuring instrument for geotechnical engineering. BACKGROUND
[0002] In the fields of geological exploration, mining and geothermal resource development, accurately grasping the change of underground water level is crucial, and the underground water level measuring instrument is an important equipment for measuring the water level of surface water, underground water and dam pressure pipe, which is suitable for straight well pipe with inner diameter of 70-150mm and buried depth of 10-500m, and requires smooth inner wall of the well pipe without concave-convex obstacles.
[0003] The underground water level measuring instrument is used by lowering the probe into the underground water through the self-retrieving device, and in the process of implementing the present application, the applicant finds that the existing underground water level measuring instrument will cause the probe to collide with the well wall due to the swing of the cable during unwinding, which will cause the probe to malfunction and affect the measurement result. In view of the above problem, the prior art has a good solution, such as a underground water level measuring instrument with publication number CN218724483U, which limits the cable during release to avoid the probe at the end of the cable from colliding with the well wall during the release of the cable due to the swing of the cable, which improves the service life of the probe and the accuracy of the measurement result. However, there are still the following defects: the cable under the well has no limiting effect, and the fluctuation of underground water will also cause the probe to collide with the well wall, which still affects the service life of the probe and the accuracy of the measurement result.
[0004] Therefore, in order to solve the above problems, a survey underground water level measuring instrument for geotechnical engineering is proposed. SUMMARY
[0005] The present application aims to provide a survey underground water level measuring instrument for geotechnical engineering, which solves the problem of the fluctuation of underground water causing the probe to collide with the well wall and affecting the service life of the probe and the measurement result. By setting the protection assembly and the elastic limiting assembly, the position of the probe is fixed after being lowered into the underground water, avoiding the probe from colliding with the well wall due to the fluctuation of underground water, which ensures the service life of the probe and the accuracy of the measurement result.
[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: The utility model provides a kind of surveying groundwater level measuring instrument for geotechnical engineering, including probe and the cable being connected with probe, further including sleeve, protection assembly and elastic limiting component, the sleeve is fixedly sleeved on cable, protection assembly and elastic limiting component are connected and are all arranged on sleeve, the protection assembly includes plug rod, the elastic limiting component includes spout, the upper end of plug rod is inserted with spout, and plug rod is separated from spout by its gravity and inertia when cable is pulled up and released to reset, the lower end of plug rod is away from sleeve and integrally moves to the lower end of spout and is contacted with the rod wall when plug rod is separated from spout.
[0007] Preferably, the protection assembly further includes a disc, a rotating shaft and a torsion spring, the disc is movably sleeved on the sleeve, the surface of the disc is provided with a notch, the rotating shaft is rotatably arranged inside the notch, the upper end of the plug rod is fixedly sleeved with the rotating shaft, and the torsion spring is arranged on the rotating shaft, the two ends of the torsion spring are fixedly connected with the side wall of the notch and the rod wall of the rotating shaft, respectively.
[0008] Preferably, the elastic limiting component further includes an annular plate and a spring, the annular plate is fixedly sleeved on the upper end of the sleeve, and the spring is sleeved on the sleeve and fixedly connected with the disc and the annular plate at both ends.
[0009] Preferably, a circular ring is movably sleeved on the sleeve, the circular ring is provided with a hinge block one, the lower end of the plug rod is provided with a hinge block two, and the hinge block one and the hinge block two are jointly connected with a connecting rod.
[0010] Preferably, the bottom of the hinge block two is provided with a guide wheel.
[0011] Preferably, the distance between the guide wheel and the sleeve when the guide wheel contacts with the well wall is greater than the distance between the lower end of the sleeve and the bottom of the probe.
[0012] Preferably, the number of notches is greater than or equal to 3.
[0013] Preferably, the spring force of the spring is greater than the sum of the gravity of the three connecting rods.
[0014] Compared with the prior art, the utility model has the beneficial effects that: Through the protection assembly and the elastic limiting component, after the probe is lowered to the predetermined depth, the operator can quickly pull and release the cable, the plug rod is separated from the spout by the gravity and inertia of the plug rod, and then the elastic force of the torsion spring drives the multiple connecting rods to open outward synchronously until the guide wheels at the ends of the connecting rods abut against the well wall, effectively solving the problem of probe shaking caused by cable swinging or underground water fluctuation, ensuring the service life of the probe and the accuracy of the measurement results. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1The overall structure of the present application is shown in the schematic diagram; Figure 2 The upper and lower isometric views of the three connecting rods of the present application are shown in the schematic diagram; Figure 3 The connection structure of the sleeve and the protection assembly in the present application is shown in the schematic diagram; Figure 3 Figure 4 The partial A part of the present application is shown in the enlarged view. Figure 2
[0016] In the figure: 1, probe; 2, cable; 3, sleeve; 31, circular ring; 32, articulated block one; 4, protection assembly; 41, insertion rod; 411, articulated block two; 412, guide wheel; 42, disc; 421, notch; 43, rotating shaft; 44, torsional spring; 5, elastic limiting assembly; 51, insertion tube; 52, annular plate; 53, spring; 6, connecting rod. DETAILED DESCRIPTION
[0017] 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 a 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 work fall within the scope of protection of the present application.
[0018] Please refer to Figures 1 to 4 , the present application provides a kind of surveying groundwater level measuring instrument for geotechnical engineering, technical scheme is as follows: Specifically, please refer to Figure 1 And Figure 2 A kind of surveying groundwater level measuring instrument for geotechnical engineering, including probe 1 and the cable 2 connected with probe 1, the upper end of cable 2 is used to connect other components of water level measuring instrument, further including sleeve 3, protection assembly 4 and elastic limiting assembly 5, the sleeve 3 is fixedly sleeved on cable 2, the protection assembly 4 and elastic limiting assembly 5 are connected and are all arranged on sleeve 3, the protection assembly 4 includes insertion rod 41, the elastic limiting assembly 5 includes insertion tube 51, the upper end of insertion rod 41 is inserted with insertion tube 51, when lifting cable 2 and releasing to reset, insertion rod 41 falls by gravity and inertia and separates from insertion tube 51, when insertion rod 41 separates from insertion tube 51, lower end is away from sleeve 3 and is integrally moved to the lower end of insertion tube 51 and is contacted with the rod wall.
[0019] As an embodiment of the present application, refer to Figure 1 、 Figure 2 And Figure 3 The protection assembly 4 further comprises a disc 42, a rotating shaft 43 and a torsion spring 44, the disc 42 is movably sleeved on the sleeve pipe 3, the surface of the disc 42 is provided with notches 421, the number of the notches 421 is greater than or equal to 3, the rotating shaft 43 is rotatably arranged in the notches 421, the upper end of the inserting rod 41 is fixedly sleeved with the rotating shaft 43, and the torsion spring 44 is arranged on the rotating shaft 43, and the two ends of the torsion spring 44 are fixedly connected with the side wall of the notches 421 and the rod wall of the rotating shaft 43 respectively.
[0020] Under the above setting condition, when the inserting rod 41 is separated from the inserting pipe 51 by the inertial effect, the torsion spring 44 drives the rotating shaft 43 to rotate by the elastic force of the torsion spring 44, in the process of the rotating of the rotating shaft 43, the upper end of the connecting rod 6 is driven to rotate around the central axis of the rotating shaft 43 by being fixedly sleeved with the connecting rod 6, so that the lower end of the connecting rod 6 is turned up in the process of moving away from the sleeve pipe 3, and the position of the sleeve pipe 3 is fixed under the action of the three connecting rods 6, the swing amplitude of the probe 1 in water is reduced, the probe 1 is prevented from being damaged by colliding with the well wall, and the accuracy of the measurement result is effectively ensured.
[0021] As an embodiment of the present application, referring to Figure 1 , Figure 2 and Figure 4 , the elastic limiting assembly 5 further comprises an annular plate 52 and a spring 53, the annular plate 52 is fixedly sleeved at the upper end of the sleeve pipe 3, the spring 53 is sleeved on the sleeve pipe 3, and the two ends of the spring 53 are fixedly connected with the disc 42 and the annular plate 52 respectively, and the elastic force of the spring 53 is greater than the sum of the gravity of the three connecting rods 6.
[0022] Under the above setting condition, when the probe 1 is lowered into the well by the cable 2, the upper end of the inserting rod 41 can keep a stable inserting state with the inserting pipe 51 under the elastic force of the spring 53, so that the volume of the whole probe 1 is limited, and the probe 1 is prevented from being affected to enter into underground water due to too large volume.
[0023] As an embodiment of the present application, referring to Figure 3 , the sleeve pipe 3 movably sleeves a circular ring 31, the circular ring 31 is provided with a hinged block one 32, the lower end of the inserting rod 41 is provided with a hinged block two 411, and the hinged block one 32 and the hinged block two 411 are jointly connected with the connecting rod 6.
[0024] Under the above setting condition, the synchronous turning of three or more connecting rods 6 (the number of the connecting rods 6 is determined by the number of the notches 421, and the number of the connecting rods 6 is equal to the number of the notches 421) can be realized, so that the lower end of the three connecting rods 6 is in a vertical state of the sleeve pipe 3 when contacting with the well wall, the probe 1 is prevented from being inclined, and the accuracy of the measurement result is further ensured.
[0025] As one embodiment of the present invention, refer to Figure 3 The bottom of the hinge block 411 is provided with a guide wheel 412.
[0026] Under the above-mentioned conditions, the guide wheel 412 can be used to reduce the friction between the lower end of the connecting rod 6 and the well wall, so that the probe 1 can be removed from the well when maintenance or repair is required after long-term use.
[0027] As one embodiment of the present invention, refer to Figure 2 and Figure 3 When the guide wheel 412 contacts the well wall, the distance between it and the casing 3 is greater than the distance between the lower end of the casing 3 and the bottom of the probe 1.
[0028] Under the above-mentioned conditions, when the guide wheel 412 at the lower end of each connecting rod 6 is in contact with the well wall, the range of motion of the probe 1 is less than the straight distance between the casing 3 and the well wall, thus avoiding the probe 1 from colliding with the well wall when the groundwater fluctuates, and achieving further protection for the probe 1.
[0029] Working principle: Before and during the descent, the entire measuring instrument is in a retracted state, and the spring 53 in the elastic limit component 5 is in a natural state. Its elastic force acts between the disc 42 and the annular plate 52, pulling the protective component 4 upward. At this time, the upper ends of the three insert rods 41 of the protective component 4 are respectively inserted into the corresponding insert tubes 51, so that the connecting rod 6, which is hinged to the lower end of the insert rod 41, retracts inward. The radial dimension of the entire device is minimized, which facilitates smooth descent along the well hole without scratching.
[0030] When probe 1 is lowered close to the predetermined water layer, the operator performs a quick, small-amplitude "lift and release" operation via cable 2 on the ground. At the instant of this "lift and release," due to inertia, the probe 41 will accelerate downwards relative to the insertion tube 51. This action causes the upper end of the probe 41 to detach from the insertion tube 51. At the moment of separation, the torsion spring 44 installed in the slot 421 of the disc 42 immediately releases its elastic force. This torque acts on the rotating shaft 43. Since the upper end of the probe 41 is fixedly connected to the rotating shaft 43... The elastic force of the torsion spring 44 drives the rotating shaft 43 to rotate. When the rotating shaft 43 rotates, it drives the lower ends of the three insertion rods 41 to expand outward through the hinge block 32 and the connecting and hinge block 411 until the guide wheel 412 at the bottom of the insertion rod 41 contacts and tightly abuts against the well wall. When the three connecting rods 6 are fully extended and supported on the well wall, the sleeve 3 and the cable 2 are effectively fixed at the measurement depth, which greatly reduces the swing caused by the upper cable 2 shaking or the fluctuation of the water flow in the well, avoids the probe 1 from colliding with the well wall, ensures the service life of the probe 1 and improves the accuracy of the measurement results.
[0031] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A groundwater level measuring instrument for geotechnical engineering, comprising a probe (1) and a cable (2) connected to the probe (1), characterized in that: It also includes a sleeve (3), a protective component (4) and an elastic limiting component (5). The sleeve (3) is fixedly sleeved on the cable (2). The protective component (4) and the elastic limiting component (5) are connected and both are set on the sleeve (3). The protective component (4) includes a rod (41). The elastic limiting component (5) includes a tube (51). The upper end of the rod (41) is inserted into the tube (51). When the cable (2) is lifted and released to reset, the rod (41) falls down by its own weight and inertia and separates from the tube (51). When the rod (41) separates from the tube (51), the lower end moves away from the sleeve (3) and moves up to the rod wall to contact the lower end of the tube (51).
2. The groundwater level measuring instrument for geotechnical engineering according to claim 1, characterized in that: The protective assembly (4) further includes a disc (42), a rotating shaft (43), and a torsion spring (44). The disc (42) is movably sleeved on the sleeve (3). The surface of the disc (42) is provided with a groove (421). The rotating shaft (43) is rotatably disposed inside the groove (421). The upper end of the insert rod (41) is fixedly sleeved with the rotating shaft (43). The torsion spring (44) is disposed on the rotating shaft (43). The two ends of the torsion spring (44) are fixedly connected to the side wall of the groove (421) and the rod wall of the rotating shaft (43), respectively.
3. The groundwater level measuring instrument for geotechnical engineering according to claim 2, characterized in that: The elastic limiting component (5) also includes an annular plate (52) and a spring (53). The annular plate (52) is fixedly sleeved on the upper end of the sleeve (3), and the spring (53) is sleeved on the sleeve (3), with its two ends fixedly connected to the disc (42) and the annular plate (52) respectively.
4. The groundwater level measuring instrument for geotechnical engineering according to claim 3, characterized in that: A ring (31) is movably sleeved on the sleeve (3), and a hinge block (32) is provided on the ring (31). A hinge block (411) is provided at the lower end of the insertion rod (41). A connecting rod (6) is connected between the hinge block (32) and the hinge block (411).
5. A groundwater level measuring instrument for geotechnical engineering according to claim 4, characterized in that: The bottom of the hinge block 2 (411) is provided with a guide wheel (412).
6. A groundwater level measuring instrument for geotechnical engineering according to claim 5, characterized in that: When the guide wheel (412) contacts the well wall, the distance between it and the casing (3) is greater than the distance between the lower end of the casing (3) and the bottom of the probe (1).
7. A groundwater level measuring instrument for geotechnical engineering according to claim 2, characterized in that: The number of slots (421) is greater than or equal to 3.
8. A groundwater level measuring instrument for geotechnical engineering according to claim 4, characterized in that: The elastic force of the spring (53) is greater than the sum of the weights of the three connecting rods (6).