Automatic monitoring device for water level and water temperature of underground water

Abstract

The invention discloses an automatic monitoring device for the water level and the water temperature of underground water, and relates to the field of hydrogeological monitoring. The flexible extending arm comprises a plurality of rotating shafts and a plurality of extending blocks, and every two adjacent extending blocks are hinged to each other through the corresponding rotating shaft; the direction-changing sliding assembly comprises a direction-changing slide way and a plurality of followers, and the followers are connected with the rotating shaft and connected to the direction-changing slide way in a sliding mode; a driving device; and the locking mechanism is used for locking every two adjacent extension blocks to form a horizontal detection arm when the extension blocks are pushed to a horizontal posture. According to the device, the driving device is matched with the flexible stretching arm and the direction-changing sliding assembly, the posture conversion from vertical lowering to horizontal unfolding is achieved, and a stable horizontal detection arm is formed through the locking mechanism, so that the probe can be far away from the well wall in the horizontal direction to monitor the highest water level; the problem that local highest water level data are difficult to accurately obtain by an existing underground water monitoring method is solved.

Description

Technical Field

[0001] This invention relates to the field of hydrogeological monitoring technology, specifically to an automatic monitoring device for groundwater level and temperature. Background Technology

[0002] Accurate monitoring of groundwater levels and temperatures is crucial for water resource management, geological research, and environmental assessment. Currently, the conventional monitoring method involves placing probes in monitoring wells to measure the water level and temperature. Groundwater temperature monitoring is primarily used to reveal the thermal dynamics of the groundwater system, serving as an important indicative parameter for tracking geothermal activity, pollution migration, groundwater circulation processes, and interactions with surface water. Groundwater level monitoring is mainly used to understand the dynamic changes in groundwater, providing a scientific basis for water resource management, geological environmental protection, and geological disaster prevention.

[0003] However, single, fixed-location monitoring wells cannot accurately capture spatial changes in groundwater levels. Their measurements only represent the head at the filter location and cannot directly reflect the precise elevation and distribution of the groundwater level. Furthermore, the "local highest water level" (i.e., the apex of the water level mound) is a key hydraulic feature point, containing information on the maximum potential energy difference driving water flow, which is crucial for diagnosing environmental problems and providing early warnings of risks. Traditionally, to obtain data at this point, wells need to be drilled directly at the predicted apex; however, this area often has special hydrogeological conditions (such as loose soil and easy collapse), resulting in high construction difficulty and costs, and the drilling process itself is very likely to disturb and damage the natural seepage field. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic groundwater level and temperature monitoring device, which solves the problem that existing groundwater monitoring methods are unable to accurately obtain local maximum water level data.

[0005] To achieve the above objectives, the present invention provides the following technical solution: An automatic groundwater level and temperature monitoring device includes: Rotary derrick; A flexible extension arm, comprising several pivots and several extension blocks, with adjacent extension blocks hinged together by pivots. The monitoring device includes cables laid along the flexible extension arm and probes located at the ends; The reversing sliding assembly includes a reversing slide rail disposed on a rotary derrick and a follower fixedly connected to a rotating shaft. The follower is slidably connected to the reversing slide rail, which is used to guide the extension block from a vertically lowered state to a horizontally extended state. Drive unit, which is used to push the extension block to move along the reversing slide; A locking mechanism is used to lock two adjacent extension blocks together to form a horizontal probe arm when the extension blocks are pushed to a horizontal position.

[0006] Furthermore, the reversing slide includes a downward section, a transition section, and a lateral section; Furthermore, the transition section is inclined to guide the follower to gradually turn the extension block to the horizontal direction.

[0007] Furthermore, the locking mechanism includes: The first hydraulic cylinder is fixedly connected to one end of the extension block; A slot is located at the other end of the extension block; A pin, which is fixedly connected to the output end of the first hydraulic cylinder, and corresponds to the slot; The signal module is fixedly connected to the lateral section.

[0008] Furthermore, the locking mechanism includes a latching component, the latching component comprising: A locking lever, which is slidably connected to one end of the extension block; A locking slot is located at the other end of the extension block; The first spring is disposed between the locking rod and the inner wall of the extension block; A stop block is slidably connected inside the extension block, and its sliding direction is perpendicular to the sliding direction of the locking rod. The stop block is used to prevent the locking rod from extending to the outside of the extension block. The second spring is located between the locking rod and the inner wall of the stop; The second hydraulic cylinder is fixedly connected to the side-moving section; The push block is fixedly connected to the output end of the second hydraulic cylinder and is used to push the stop block to the outside of the locking lever.

[0009] Furthermore, the locking mechanism also includes an unlocking component, which includes an unlocking port formed on the side wall of the extension block, and the unlocking port communicates with the locking groove; When the flexible extension arm needs to be retracted, the locking rod located in the side-shifting section is engaged in the locking groove by the first spring. An unlocking gap is formed between the inner wall of the locking groove and the extension block. The second hydraulic cylinder drives the push block to move through the unlocking port to the unlocking gap. The driving device drives several extension blocks to move upward, thereby causing the extension blocks located in the side-shifting section to move towards the transition section, so that the locking rod moves between the stop block and the first spring. The stop block abuts against the locking rod under the action of the second spring.

[0010] Furthermore, the driving device includes: The drive motor is fixedly connected to the rotary derrick. Two rotating wheels are respectively rotatably connected to the upper and lower ends of the rotary derrick, with the upper wheel of the rotary derrick being fixedly connected to the output end of the drive motor. The conveyor belt is driven by two pulleys; Several limiting strips are fixedly connected to the conveyor belt. The limiting strips are spaced apart along the length of the conveyor belt, and a limiting gap is formed between two adjacent limiting strips to accommodate and push an extension block.

[0011] Furthermore, a float is fixedly connected to the probe, and the probe and the bottom of the cable are connected to the extension block at the end of the flexible extension arm via a connecting line through at least one set of cable delivery assemblies. The top and middle of the cable are fixedly connected to several extension blocks.

[0012] Furthermore, the wire feeding assembly includes: A winding frame, which is fixedly connected to the extension block at the end of the flexible extension arm; At least one winding shaft is rotatably connected to the winding frame; A waterproof motor is used to drive the winding shaft to rotate; There are at least two connecting wires, one end of which is wound around a spool, and the other end is fixedly connected to the bottom of the probe and the cable, respectively.

[0013] Compared with existing technologies, the automatic groundwater level and temperature monitoring device provided by this invention, through a drive device in conjunction with a flexible extension arm and a directional sliding component, achieves a posture transformation from vertical lowering to horizontal unfolding. Under the action of a locking mechanism, a stable horizontal detection arm is formed, enabling the probe to perform multi-point in-situ monitoring along the horizontal direction away from the well wall. This breaks through the limitations of traditional single-point vertical monitoring, and can accurately capture the spatial variation characteristics of groundwater level. In particular, it can effectively detect the distribution of the "local highest water level surface", improving the comprehensiveness and accuracy of monitoring.

[0014] The device eliminates the need to drill multiple monitoring wells directly in high-risk areas prone to collapse. It can detect groundwater within a radius of tens of meters around the well simply by utilizing existing wells and extending the flexible extension arm horizontally. This not only reduces construction risks and costs but also minimizes disturbance to the underground environment.

[0015] The device is equipped with a reliable locking mechanism that automatically locks the flexible extension arm into a rigid structure after it is horizontally extended, ensuring the stability of the probe during the measurement process and thus ensuring the accuracy of data acquisition. At the same time, the locking mechanism has an unlocking function, which makes it easy to safely and smoothly retract the extension arm into the wellbore after monitoring is completed, improving the reusability and ease of operation of the equipment. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure provided in Embodiment 1 of the present invention; Figure 2 Provided for Embodiment 1 of the present invention Figure 1 Enlarged view of section A in the middle; Figure 3 This is a partial structural diagram of the flexible extendable arm provided in Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of the internal structure of the rotary derrick provided in an embodiment of the present invention; Figure 5 Provided for embodiments of the present invention Figure 4 Enlarged view of section B; Figure 6 This is a schematic diagram of the structure of the driving device provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the wire feeding assembly provided in an embodiment of the present invention; Figure 8 This is a schematic diagram of the overall structure provided in Embodiment 2 of the present invention; Figure 9 This is a schematic diagram of the flexible extension arm, monitoring mechanism, and driving device provided in Embodiment 2 of the present invention; Figure 10 Provided for Embodiment 2 of the present invention Figure 9 Enlarged view of section C; Figure 11 This is a schematic diagram of the interior of the two extension blocks provided in Embodiment 2 of the present invention; Figure 12 This is a schematic diagram of the snap-fit ​​assembly provided in Embodiment 2 of the present invention.

[0018] Explanation of reference numerals in the attached figures: 1. Rotary derrick; 2. Flexible extension arm; 3. Monitoring mechanism; 4. Directional sliding assembly; 5. Drive unit; 6. Locking mechanism; 7. Cable release assembly; 21. Rotary shaft; 22. Extension block; 31. Cable; 32. Probe; 33. Float; 41. Directional slide; 411. Lowering section; 412. Transition section; 413. Lateral section; 42. Follower; 51. Drive motor; 52. Rotary wheel; 53. Conveyor belt; 54. Limiting strip ; 61. First hydraulic cylinder; 62. Slot; 63. Pin; 64. Signal module; 65. Snap-fit ​​assembly; 651. Locking rod; 652. Locking groove; 653. First spring; 654. Stop block; 655. Second spring; 656. Second hydraulic cylinder; 657. Push block; 66. Unlocking assembly; 661. Unlocking port; 662. Unlocking gap; 71. Winding frame; 72. Winding shaft; 73. Waterproof motor; 74. Connecting wire. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0020] Example 1: Please see Figures 1 to 7 An automatic groundwater level and temperature monitoring device, comprising: Rotary derrick 1; The flexible extension arm 2 includes a plurality of pivots 21 and a plurality of extension blocks 22, with adjacent extension blocks 22 being hinged to each other via pivots 21. The monitoring device 3 includes a cable 31 laid along the flexible extension arm 2 and a probe 32 located at the end. The reversing sliding assembly 4 includes a reversing slide 41 disposed on the rotary frame 1 and a follower 42 fixedly connected to the rotating shaft 21. The follower 42 is slidably connected to the reversing slide 41. The reversing slide 41 is used to guide the extension block 22 from the vertical lowering state to the horizontal unfolding state. Drive unit 5, which is used to push extension block 22 to move along direction change slide 41; The locking mechanism 6 is used to lock two adjacent extension blocks 22 when the extension blocks 22 are pushed to a horizontal position, forming a horizontal probe arm.

[0021] The device drives the flexible extension arm 2 to extend horizontally and lock it through the drive device 5, so that the probe 32 can monitor the groundwater level and water temperature at multiple points along the horizontal direction, so as to accurately capture the spatial changes of the groundwater level and the local highest water level.

[0022] The deflection slide 41 includes a downward section 411, a transition section 412, and a side-moving section 413; the transition section 412 is inclined and is used to guide the follower 42 to drive the extension block 22 to gradually turn to the horizontal direction.

[0023] When the device is working in the monitoring well, the drive unit 5 first pushes the flexible extension arm 2 vertically down to the target depth along the downward section 411 of the directional slide 41; then, the follower 42 enters the inclined transition section 412, guiding each extension block 22 to deflect around the rotating shaft 21 in sequence, so that the extension arm gradually changes from a vertical posture to a horizontal posture; when the follower 42 slides into the side-shifting section 413 and fully unfolds, the locking mechanism 6 is automatically activated, rigidly locking the two adjacent extension blocks 22, thus forming a stable horizontal detection arm; finally, the probe 32 moves away from the well wall in the horizontal direction, realizing accurate, multi-point in-situ monitoring of the spatial distribution of the "local highest water level" of groundwater, overcoming the limitations of traditional single-point monitoring and the high risk and high cost of drilling directly in the water level mound area.

[0024] Locking mechanism 6 includes: The first hydraulic cylinder 61 is fixedly connected to one end of the extension block 22; Slot 62 is located at the other end of extension block 22; Pin 63 is fixedly connected to the output end of the first hydraulic cylinder 61 and corresponds to slot 62; Signal module 64 is fixedly connected to the side shift section 413.

[0025] When the flexible extension arm 2 is horizontally extended to the end of the lateral section 413, the follower 42 triggers the signal module 64, which automatically starts the hydraulic cylinder to push the pin 63 into the slot 62 of the adjacent extension block 22, thereby locking the flexible extension arm 2 into a stable horizontal rigid arm, ensuring the structural stability and data accuracy of the probe 32 during measurement.

[0026] The drive unit 5 includes: The drive motor 51 is fixedly connected to the rotary derrick 1; Two rotating wheels 52 are rotatably connected to the upper and lower ends of the rotating frame 1, respectively. The rotating wheel 52 located at the upper end of the rotating frame 1 is fixedly connected to the output end of the drive motor 51; the conveyor belt 53 is driven by the two rotating wheels 52. A plurality of limiting strips 54 are fixedly connected to the conveyor belt 53. The plurality of limiting strips 54 are spaced apart along the length of the conveyor belt 53, and a limiting gap is formed between two adjacent limiting strips 54 to accommodate and push an extension block 22.

[0027] The drive motor 51 drives the wheel 52 to make the conveyor belt 53 rotate. The limiting strips 54 set at intervals on the conveyor belt 53 use the limiting gaps between them to accommodate and push each extension block 22 in sequence, thereby providing a smooth and controllable downward power for the entire flexible extension arm 2, ensuring that it is accurately lowered to the target depth.

[0028] A float 33 is fixedly connected to the probe 32. The probe 32 and the bottom of the cable 31 are both connected to the extension block 22 at the end of the flexible extension arm 2 via a connecting line 74 through at least one set of cable delivery assemblies 7. The top and middle of the cable 31 are fixedly connected to several extension blocks 22. The cable delivery assembly 7 includes: The winding frame 71 is fixedly connected to the extension block 22 at the end of the flexible extension arm 2; At least one winding shaft 72 is rotatably connected to the winding frame 71; A waterproof motor 73 is used to drive the winding shaft 72 to rotate; At least two connecting wires 74, one end of each connecting wire 74 is wound around a winding shaft 72, and the other end is fixedly connected to the bottom of the probe 32 and the cable 31 respectively.

[0029] Once the flexible extension arm 2 is locked in a horizontal position at the target depth, the waterproof motor 73 drives the winding shaft 72 to release the connecting line 74, causing the probe 32 with the float 33 to float vertically to the groundwater level under the action of buoyancy, or to stay at a specific water temperature layer for measurement by reeling in and releasing the line; this component enables a single probe 32 to flexibly and accurately measure different depths or directly reach the highest water level, realizing vertical multi-parameter detection under the fixed position of the horizontal extension arm.

[0030] Working principle: First, the rotary derrick 1 is installed in the well using external mechanical equipment. The drive motor 51 is then started, causing the upper and lower rotating wheels 52 and the conveyor belt 53 to rotate in a cycle. Equidistantly fixed limiting strips 54 on the conveyor belt 53 form limiting gaps, sequentially accommodating and pushing the interconnected extension blocks 22, causing the entire flexible extension arm 2 to descend along the rotary derrick 1 to the preset target depth. Then, the deployment and locking phase begins: the follower 42 connected to the rotating shaft 21 of the extension block 22 moves with the flexible extension arm... 2. Moving downwards, the arm first slides along the vertical downward section 411 of the deflection slide 41, and then enters the inclined transition section 412. Guided by the inclined transition section 412, each extension block 22 begins to deflect sequentially around the pivot 21, causing the entire arm to gradually change from a vertical state to a horizontally extended state. When the follower 42 fully enters the horizontal lateral section 413 and the arm is fully extended, the signal module 64 located at the end of the lateral section 413 is triggered, which then activates the locking mechanism 6. The first hydraulic cylinder 61 actuates, locking the pin. 63 is pushed into the slot 62 of the adjacent extension block 22, thereby rigidly locking the hinge point and forming a stable horizontal probe arm extending towards the aquifer outside the well, with a portion of the extension block 22 reserved at the limiting gap; finally, the measurement execution stage: after the horizontal arm is locked, the wire release assembly 7 fixed at its end starts to work, and the waterproof motor 73 drives the winding shaft 72 to release the connecting wire 74; the lower end of the connecting wire 74 is attached to the probe 32 with a float 33, and under the action of buoyancy, the probe 32 floats vertically until it reaches the groundwater level. Meanwhile, the cables 31, which are segmented and connected to the flexible extension arm 2, ensure stable signal transmission. After the measurement is completed, the probe 32 is retracted. The flexible extension arm 2 is lifted by the drive device 5. When the locked extension block 22 retracts to the lateral displacement section 413, the signal module 64 is triggered, causing the first hydraulic cylinder 61 to move and disengage the pin 63 from the slot 62. Subsequently, under the guidance of the transition section 412, the flexible extension arm 2 bends at the hinge, ultimately restoring all extension blocks 22 to a vertically folded state and pulling them out of the wellhead. In this device, the groundwater level within a range of tens of meters around the wellhead can be monitored by rotating the rotary well frame 1. This overcomes the limitations of traditional single-point monitoring and eliminates the need for direct drilling in high-risk areas prone to collapse. It can obtain the spatial distribution information of the "local highest water level" and vertical water temperature parameters of groundwater in situ with precision.

[0031] Example 2: The difference between this embodiment and Embodiment 1 is that the locking mechanism 6 adopts the first embodiment.

[0032] Please see Figures 8 to 12 The locking mechanism 6 includes a snap-fit ​​assembly 65, which includes: Locking lever 651 is slidably connected to one end of extension block 22; A locking slot 652 is provided at the other end of the extension block 22; The first spring 653 is disposed between the locking rod 651 and the inner wall of the extension block 22; The stop block 654 is slidably connected inside the extension block 22, and its sliding direction is perpendicular to the sliding direction of the locking rod 651. The stop block 654 is used to prevent the locking rod 651 from extending to the outside of the extension block 22. The second spring 655 is disposed between the locking rod 651 and the inner wall of the stop 654; The second hydraulic cylinder 656 is fixedly connected to the side displacement section 413; Push block 657 is fixedly connected to the output end of second hydraulic cylinder 656 and is used to push stop block 654 to the outside of locking lever 651.

[0033] When the flexible extension arm 2 is horizontally extended into place, the second hydraulic cylinder 656 on the lateral section 413 drives the push block 657 to move, pushing the stop block 654 to slide away from its original position; after the stop block 654 is released from obstruction, the locking rod 651 is quickly ejected under the action of the first spring 653 and inserted into the locking groove 652 of the adjacent extension block 22, thereby realizing the automatic mechanical engagement and locking of the adjacent extension blocks 22.

[0034] The locking mechanism 6 also includes an unlocking component 66, which includes an unlocking port 661 opened on the side wall of the extension block 22, and the unlocking port 661 communicates with the locking groove 652. When the flexible extension arm 2 needs to be retracted, the locking rod 651 located in the side-shifting section 413 is engaged in the locking groove 652 by the first spring 653. An unlocking gap 662 is formed between the inner wall of the locking groove 652 and the extension block 22. The second hydraulic cylinder 656 drives the push block 657 to move through the unlocking port 661 to the unlocking gap 662. The driving device 5 drives several extension blocks 22 to move upward, thereby driving the extension blocks 22 located in the side-shifting section 413 to move towards the transition section 412, so that the locking rod 651 moves between the stop block 654 and the first spring 653. The stop block 654 abuts against the locking rod 651 under the action of the second spring 655.

[0035] During the recovery operation, the second hydraulic cylinder 656 drives the pusher 657 to extend into the unlocking port 661 and abut against the unlocking gap 662 near the locking groove 652. Then, the drive device 5 pulls the extension arm upward, causing the locking rod 651, which has been stuck in the locking groove 652, to retract relatively to the inside of the stop block 654. Under the action of the second spring 655, the stop block 654 automatically resets and blocks the front end of the locking rod 651 again, thereby realizing the reliable release of the mechanical engagement and providing a guarantee for the safe and smooth recovery of the extension arm into the wellbore.

[0036] Working principle: When the flexible extension arm 2 is horizontally extended to its position, the locking mechanism 6 is activated. The second hydraulic cylinder 656 on the lateral section 413 drives the push block 657 to move forward, pushing the stop block 654 away from its initial blocking position. After the stop block 654 is removed, the locking rod 651 pops outward under the elastic force of the first spring 653 and locks into the locking groove 652 of the adjacent extension block 22, thereby realizing automatic mechanical interlocking of the hinge point and forming a reliable horizontal rigid detection arm. After the measurement task is completed, a retrieval operation is performed. At this time, the second hydraulic cylinder... The drive pusher 657 extends through the unlocking port 661 and abuts against the unlocking gap 662. Then, the drive unit 5 pulls the extension arm upwards. This action causes the locking rod 651, which is already engaged in the locking groove 652, to retract relatively until its front end is behind the stop block 654. The stop block 654 then automatically resets under the action of the second spring 655, blocking the front end of the locking rod 651 again, thus reliably releasing the mechanical engagement. Afterwards, guided by the transition section 412, the extension arm gradually returns to its vertical folded state and is finally safely pulled back into the wellbore. This design, through the combination of purely mechanical engagement and hydraulically triggered unlocking, provides locking assurance and a convenient recovery mechanism, enhancing the system's operational robustness and maintainability under long-term, complex operating conditions.

[0037] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An automatic groundwater level and temperature monitoring device, characterized in that, include: Rotary derrick (1); The flexible extension arm (2) includes several pivots (21) and several extension blocks (22), with adjacent extension blocks (22) hinged to each other via pivots (21); The monitoring device (3) includes a cable (31) laid along the flexible extension arm (2) and a probe (32) located at the end. The reversing sliding assembly (4) includes a reversing slide (41) provided on the rotary derrick (1) and a follower (42) fixedly connected to the rotating shaft (21). The follower (42) is slidably connected to the reversing slide (41). The reversing slide (41) is used to guide the extension block (22) from the vertical lowering state to the horizontal unfolding state. Drive device (5), which is used to push the extension block (22) to move along the reversing slide (41); The locking mechanism (6) is used to lock two adjacent extension blocks (22) to form a horizontal probe arm when the extension blocks (22) are pushed to a horizontal position.

2. The automatic groundwater level and temperature monitoring device according to claim 1, characterized in that, The deflection slide (41) includes a downward section (411), a transition section (412), and a side-moving section (413).

3. The automatic groundwater level and temperature monitoring device according to claim 2, characterized in that, The transition section (412) is inclined to guide the follower (42) to drive the extension block (22) to gradually turn to the horizontal direction.

4. The automatic groundwater level and temperature monitoring device according to claim 3, characterized in that, The locking mechanism (6) includes: The first hydraulic cylinder (61) is fixedly connected to one end of the extension block (22); A slot (62) is provided at the other end of the extension block (22); A pin (63) is fixedly connected to the output end of the first hydraulic cylinder (61) and corresponds to a slot (62); The signal module (64) is fixedly connected to the side-shifting section (413).

5. The automatic groundwater level and temperature monitoring device according to claim 3, characterized in that, The locking mechanism (6) includes a snap-fit ​​assembly (65), which includes: A locking lever (651) is slidably connected to one end of an extension block (22); A locking slot (652) is provided at the other end of the extension block (22); The first spring (653) is disposed between the locking rod (651) and the inner wall of the extension block (22); The stop (654) is slidably connected inside the extension block (22), and its sliding direction is perpendicular to the sliding direction of the locking rod (651). The stop (654) is used to prevent the locking rod (651) from extending to the outside of the extension block (22). The second spring (655) is disposed between the locking rod (651) and the inner wall of the stop (654); The second hydraulic cylinder (656) is fixedly connected to the side-shifting section (413); Push block (657), which is fixedly connected to the output end of the second hydraulic cylinder (656), is used to push the stop block (654) to the outside of the locking lever (651).

6. The automatic groundwater level and temperature monitoring device according to claim 5, characterized in that, The locking mechanism (6) further includes an unlocking component (66), which includes an unlocking port (661) opened on the side wall of the extension block (22), and the unlocking port (661) is connected to the locking groove (652). When the flexible extension arm (2) needs to be retracted, the locking rod (651) located in the side shift section (413) is engaged in the locking groove (652) by the first spring (653). An unlocking gap (662) is formed between the inner wall of the locking groove (652) and the extension block (22). The second hydraulic cylinder (656) drives the push block (657) to move through the unlocking port (661) to the unlocking gap (662). The driving device (5) drives several extension blocks (22) to move upward, thereby driving the extension block (22) located in the side shift section (413) to move towards the transition section (412), so that the locking rod (651) moves between the stop block (654) and the first spring (653). The stop block (654) abuts against the locking rod (651) under the action of the second spring (655).

7. The automatic groundwater level and temperature monitoring device according to claim 1, characterized in that, The driving device (5) includes: The drive motor (51) is fixedly connected to the rotary well frame (1); Two rotating wheels (52) are respectively rotatably connected to the upper and lower ends of the rotary derrick (1). The rotating wheel (52) located at the upper end of the rotary derrick (1) is fixedly connected to the output end of the drive motor (51). The conveyor belt (53) is driven by two pulleys (52); A plurality of limiting strips (54) are fixedly connected to the conveyor belt (53). The plurality of limiting strips (54) are spaced apart along the length of the conveyor belt (53), and a limiting gap is formed between two adjacent limiting strips (54) for accommodating and pushing an extension block (22).

8. The automatic groundwater level and temperature monitoring device according to claim 1, characterized in that, A float (33) is fixedly connected to the probe (32). The bottom of the probe (32) and the cable (31) are connected to the extension block (22) at the end of the flexible extension arm (2) via a connecting line (74) through at least one set of cable laying assemblies (7). The top and middle of the cable (31) are fixedly connected to several extension blocks (22).

9. The automatic groundwater level and temperature monitoring device according to claim 8, characterized in that, The wire feeding assembly (7) includes: A winding frame (71) is fixedly connected to an extension block (22) at the end of the flexible extension arm (2); At least one winding shaft (72) is rotatably connected to the winding frame (71); A waterproof motor (73) is used to drive the winding shaft (72) to rotate; At least two connecting wires (74) are provided, with one end of each connecting wire (74) wound around a winding shaft (72) and the other end fixedly connected to the bottom of the probe (32) and the cable (31).

Images