Deep groove concrete pouring liquid level real-time monitoring device and using method

Abstract

The invention discloses a deep groove concrete pouring liquid level real-time monitoring device and a use method, a mounting frame bears an electric capstan, an electronic control system and a tension sensor, a detection head is suspended at the junction of a concrete liquid level and a slurry mixing layer, and a steel wire rope is respectively connected with the detection head and the electric capstan. The tension sensor monitors tension changes of the steel wire rope in real time, and the electronic control system achieves automatic tightening by judging the loosening state of the steel wire rope. When the concrete liquid level rises, the detection head floats upwards to loosen the steel wire rope and the tension is lower than a set threshold value, the electronic control system drives the electric capstan to automatically tighten the steel wire rope to track the concrete liquid level, and the real-time liquid level height is converted through the displacement of the steel wire rope; dynamic tracking of the liquid level is achieved through tension closed-loop feedback, the defects that a traditional manual feeler lever sensing monitoring method is greatly interfered by a slurry mixing layer and depends on manpower are overcome, the functions of slurry adhesion resistance, automatic adjustment and abnormal alarm are achieved, and the deep groove pouring construction quality and efficiency are remarkably improved.

Description

Technical Field

[0001] This invention belongs to the field of underwater concrete pouring technology for seepage-proof walls, and specifically relates to a real-time monitoring device for the liquid level of deep trench concrete pouring and its usage method. Background Technology

[0002] Hydropower projects are shifting towards the geologically complex southwest region. These high dam projects generally employ ultra-deep cutoff walls as the vertical seepage prevention system for the dams. The cutoff wall is constructed by forming trenches using mud slurry, followed by underwater pouring of concrete or backfilling with other seepage-proof materials to create a continuous seepage-proof structure. During underwater concrete pouring, real-time monitoring of the concrete level is directly related to construction quality and safety—precise control of the pouring guide pipe's burial depth can prevent mud mixing or pipe blockage accidents, while adjusting the burial depth of the joint pipe can prevent the risks associated with cast pipes, thus ensuring the continuity and structural integrity of the cutoff wall concrete. With the continuous increase in the construction depth of cutoff walls, traditional methods of manually determining the concrete pouring level, such as manual probe tactile judgment, are gradually revealing significant technical limitations. During the pouring of ultra-deep trench concrete, the prolonged contact time between the concrete and the slurry leads to a hydration reaction at the interface, forming a dense, flocculated slurry layer. Actual measurements during deep trench pouring show that this slurry layer can accumulate to a thickness exceeding 3 meters. Its physical properties are highly similar to those of the concrete, making it difficult for manual probes to provide tactile feedback on the actual interface between the concrete and the slurry layer, significantly increasing the risk of elevation misjudgment. Therefore, it is necessary to design a real-time monitoring device and method for the liquid level during deep trench concrete pouring to address these issues. Summary of the Invention

[0003] The technical problem to be solved by this invention is to provide a real-time monitoring device and method for the liquid level of deep trench concrete pouring, aiming to achieve real-time monitoring of the liquid level of underwater concrete pouring in ultra-deep anti-seepage walls, and reduce the technical difficulties in concrete liquid level measurement due to differences in operator experience and interference from the accumulation of grout layer.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A real-time monitoring device for the liquid level of concrete pouring in a deep trench includes a mounting frame installed at the corner of the trench section opening. An electric winch is mounted on the top of the mounting frame, with one end of the electric winch connected to a steel wire rope and a probe. A tension sensor is installed on the surface of the steel wire rope. An electronic control system is also installed on the top of the mounting frame and connected to the electric winch and the tension sensor. The mounting frame consists of a frame structure composed of a base frame, an electric winch mounting base, a tension sensor mounting base, and an electronic control system mounting base. A steel wire rope guide assembly is installed on the top of the frame structure to cooperate with the steel wire rope.

[0005] Preferably, the wire rope guide assembly includes a wire rope guide bracket and a pulley. The pulley is fixed to the end of the wire rope guide bracket and is used to guide and constrain the movement trajectory of the wire rope to prevent the wire rope from deviating and falling off the track due to vibration of the device.

[0006] Preferably, the probe is an oval shape with a hollow upper part and a counterweight lower part, and adopts a density difference suspension structure; it has strong hydrophobicity, anti-grout adhesion and corrosion resistance. The probe includes two parts: a detachable upper hollow chamber and a lower counterweight chamber. The density of the upper hollow chamber is close to the density of the grout layer, and the density of the lower counterweight chamber is close to the density of concrete, so that the probe is stably suspended at the interface between the concrete liquid surface and the grout layer.

[0007] Furthermore, the wire rope is made of high-strength, high-toughness, wear-resistant, corrosion-resistant, and fatigue-resistant steel wire. The two ends are connected to the probe head and the electric winch, respectively. The surface is set with permanent high-precision scale markings, which can be used to quickly locate the position of the probe head by visually observing the scale.

[0008] Furthermore, the electric winch includes a servo motor, drum, rope arranger, and rotary encoder. The electric winch is the core actuator of this device. By driving the wire rope to wind up and down, it dynamically adjusts the suspension position of the probe head in the deep trench, ensuring that it accurately tracks changes in the concrete liquid level.

[0009] Furthermore, the servo motor is an AC servo motor that supports three-loop control of torque, speed, and position. It has high positioning accuracy to control the displacement of the wire rope and a high dustproof and waterproof rating to adapt to the humid and dusty environment of the construction site.

[0010] Furthermore, the roller is made of wear-resistant and corrosion-resistant alloy material, with spiral grooves on the surface to constrain the arrangement of the steel wire rope, and baffles at both ends to prevent the steel wire rope from falling off during winding. An electromagnetic brake is installed inside to achieve self-locking in the event of power failure, preventing the probe from sinking uncontrollably in the event of an accidental power failure.

[0011] Furthermore, the rope guide is fixed on the electric winch mounting base, located between the outer side of the drum and the wire rope guide bracket. By moving back and forth, it guides the wire rope to be wound and unwound in an orderly manner, preventing overlapping and tangling.

[0012] Furthermore, a rotary encoder is installed on the end of the drum shaft and adopts high-resolution multi-turn absolute encoding, which breaks through the cumulative error limitation of traditional incremental encoders and achieves accurate positioning of a large range of displacements. It is used to accurately measure the amount of wire rope retraction and release displacement and the retraction and release speed, and feeds it back to the electronic control system, thereby calculating the concrete liquid level height in real time.

[0013] Preferably, the tension sensor is fixed on a tension sensor mounting base and installed on the fixed section of the wire rope path between the electric winch and the pulley. It features high sensitivity, high accuracy, excellent linearity, strong stability, and strong overload resistance, making it suitable for construction environments with high humidity, dust, and vibration. The tension sensor collects the tension signal of the wire rope in real time and transmits it to the electronic control system. Changes in tension reflect fluctuations in buoyancy experienced by the probe, indirectly characterizing changes in liquid level.

[0014] Preferably, the electronic control system includes a control panel and a motor drive controller for data acquisition, signal processing, closed-loop control, and human-machine interaction. It calculates the concrete liquid level height in real time and drives the electric winch for adjustment by fusing data from tension sensors and encoders.

[0015] Preferably, the control panel includes a main control unit, a sensor signal processing module, and a touch screen; the main control unit is used to execute control algorithms, the sensor signal processing module is used to receive, analyze, and output encoder and tension signals, and the touch screen has built-in multi-function buttons and a display module, which are used to set the take-up and release threshold according to the changes in tension signals and drive the electric winch to automatically adjust the take-up and release distance of the wire rope. The main control unit calculates the real-time depth of the concrete slurry level based on the wire rope's winding and unwinding stroke; the touchscreen displays real-time changes in wire rope tension, winding and unwinding speed and stroke, and concrete slurry level depth; multiple control modes are available through emergency stop, manual, and automatic switching. The control panel provides an intuitive understanding of the device's operation and allows for flexible adjustment of relevant parameters according to actual needs, ensuring efficient and accurate operation.

[0016] Furthermore, the motor drive controller can precisely drive the electric winch to adjust the wire rope winding speed and stroke by receiving instructions from the control panel. It can also manually control the electric winch to achieve automatic and manual dual-mode drive.

[0017] Preferably, the method of using a real-time monitoring device for the liquid level in deep trench concrete pouring includes the following steps: S1, Probe density calibration: First, the density of the upper hollow chamber and the lower counterweight chamber of the probe head were adjusted to the density of the slurry layer and the poured concrete, respectively, and then placed in a "1:1 simulation chamber" to verify its tracking and suspension performance. It was put into use only after the requirements were met. S2, Electronic control system parameter settings: Before using the device, set the trench section information parameters, concrete parameters, pouring safety margin, and tension release threshold information in the electronic control system. S3, Mounting bracket positioning and probe head lowering: Before concrete pouring, the mounting frame is placed at the corner of the trench opening. The electronic control system is activated to drive the electric winch to lower the probe head to the bottom of the deep trench. The device is activated to measure the reference surface of the trench bottom and calibrate it with the trench depth to eliminate structural errors. The probe head is raised 50cm to prevent it from being completely buried in the concrete due to the excessive pouring speed when the concrete is opened. The mounting bracket is placed at the corner of the slot opening to prevent the probe from being subjected to the lateral pressure of the concrete, which would cause the wire rope to deviate laterally and result in inaccurate measurement of the concrete liquid level. At the same time, it also prevents the wire rope from getting tangled in the embedded pipe or the reinforcing cage and damaging the device. S4, Real-time monitoring and adjustment of the pouring process: In the initial stage of concrete pouring, the concrete level elevation is manually measured three times via the remote control button of the motor-driven controller. The device readings are automatically compared and corrected to eliminate random errors and verify the accuracy and effectiveness of the tension sensor readings and the set threshold. During the pouring process, the probe tracks the rise of the concrete level in real time, and the electric winch dynamically adjusts the wire rope winding speed and stroke by receiving instructions from the electronic control system. The concrete level elevation is manually measured three times per hour and checked and corrected against the data displayed on the control panel. S5, Data Recording and Output: During the concrete pouring process, the electronic control system automatically calculates and records the wire rope winding and unwinding stroke and the concrete liquid level elevation through a rotary encoder. The control panel displays the above parameters in real time and exports the current data in tabular form through the background at any time for data analysis.

[0018] Preferably, in step S1, the "1:1 simulation chamber" is a proportionally scaled-down slotted casting model, which is filled with concrete and grout flocculants. Concrete is poured into the model through the casting guide pipe, and the dynamic tracking capability of the probe on the concrete surface is detected and adjusted.

[0019] Preferably, in step S2, the tension threshold is used to detect the slack and tight states of the wire rope: When the tension sensor's pull is less than the lower limit of the tension release threshold, it indicates that the probe is tracking the rise of the concrete surface, causing the wire rope to slack. The control panel collects, analyzes, and processes the tension signal and sends a command to the motor drive controller to precisely drive the electric winch to tighten the wire rope. When the tension sensor's pull is greater than the upper limit of the tension release threshold, it indicates that the probe is buried and encased in concrete, causing the wire rope to be over-tightened. The motor drive controller will drive the electric winch to tighten the wire rope, allowing the probe to break free from the concrete's restraint and achieve automatic adjustment.

[0020] Preferably, in step S4, during the initial stage of concrete pouring, the grout layer is relatively thin, and the error in measuring the concrete level is negligible. Comparing and correcting the data from manual and automatic measurements can improve the detection accuracy. During the pouring process, the thickness of the grout layer will affect the accuracy of the automatic detection data. The concrete level elevation is manually measured three times per hour and checked against the data displayed on the control panel to improve the detection accuracy.

[0021] The beneficial effects of this invention are as follows: This invention provides precise tracking and detection of the concrete liquid level: a density difference suspension probe overcomes interference from the slurry layer, accurately locking the "concrete-slurry layer" interface. Dynamic closed-loop control: tension sensors and a high-precision rotary encoder provide real-time feedback, while an electric winch automatically raises and lowers the wire rope, ensuring high accuracy in liquid level tracking and reducing human measurement errors. Strong anti-interference capabilities: the probe's hydrophobic coating resists mud and air bubble adhesion; the wire rope guide assembly and rope arranger prevent deviation and entanglement, adapting to high-vibration working environments. Dual safety protection: an electromagnetic brake self-locks in case of power failure to prevent rope slippage; automatic triggering of the electric winch adjustment when tension exceeds limits prevents pipe blockage and casting accidents. Intelligent human-machine collaboration: the control panel displays the concrete liquid level depth in real time; it supports both automatic control and manual verification modes, with hourly data cross-validation improving accuracy and reliability. Increased work efficiency: fully automatic continuous monitoring replaces manual probes, with real-time tracking and recording of the concrete pouring process, making it highly applicable to shallow and deep trench anti-seepage wall construction. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a real-time monitoring device for the liquid level of deep trench concrete pouring according to the present invention. Figure 2 This is a schematic diagram of the structure of the electric winch mounting base, tension sensor mounting base, and electronic control system mounting base of the present invention; Figure 3 This is a schematic diagram of the electric winch and electronic control system of the present invention; Figure 4 This is a schematic diagram of the operation of a real-time monitoring device for the liquid level of deep trench concrete pouring according to the present invention. In the diagram: 1. Mounting frame; 2. Detector head; 3. Wire rope; 4. Electric winch; 5. Tension sensor; 6. Electronic control system; 11. Base frame; 12. Electric winch mounting base; 13. Tension sensor mounting base; 14. Electronic control system mounting base; 15. Wire rope guide assembly; 41. Servo motor; 42. Drum; 43. Rope arranger; 44. Rotary encoder; 61. Control panel; 62. Motor drive controller; 151. Wire rope guide bracket; 152. Pulley. Detailed Implementation

[0023] Example 1: like Figures 1-4As shown, a real-time monitoring device for the liquid level of deep trench concrete pouring includes a mounting frame 1, which is installed at the corner of the trench section opening. An electric winch 4 is installed on the top of the mounting frame 1, and one end of the electric winch 4 is connected to a steel wire rope 3 and a probe head 2. A tension sensor 5 is installed on the surface of the steel wire rope 3. An electronic control system 6 is also installed on the top of the mounting frame 1 and connected to the electric winch 4 and the tension sensor 5. The mounting frame 1 includes a frame structure consisting of a base frame 11, a mounting base for the electric winch 4, a mounting base for the tension sensor 5, and a mounting base for the electronic control system 6. A guide assembly for the steel wire rope 3 is installed on the top of the frame structure and cooperates with the steel wire rope 3.

[0024] Preferably, the wire rope 3 guide assembly includes a wire rope 3 guide bracket and a pulley 152. The pulley 152 is fixed to the end of the wire rope 3 guide bracket and is used to guide and constrain the movement trajectory of the wire rope 3 to prevent the wire rope 3 from deviating and leaving the track due to device vibration.

[0025] Preferably, the probe head 2 is an oval shape with a hollow upper part and a counterweight lower part, and adopts a density difference suspension structure; it has strong hydrophobicity, anti-grout adhesion and corrosion resistance. The probe head 2 includes two parts: a detachable upper hollow chamber and a lower counterweight chamber. The density of the upper hollow chamber is close to the density of the grout layer, and the density of the lower counterweight chamber is close to the density of concrete, so that the probe head 2 is stably suspended at the interface between the concrete liquid surface and the grout layer.

[0026] Furthermore, the wire rope 3 is made of high-strength, high-toughness, wear-resistant, corrosion-resistant and fatigue-resistant steel wire. The two ends are connected to the probe head 2 and the electric winch 4 respectively. The surface is set with permanent high-precision scale markings, which can quickly locate the position of the probe head 2 by visually observing the scale.

[0027] Furthermore, the electric winch 4 includes a servo motor 41, a drum 42, a rope arranger 43, and a rotary encoder 44. The electric winch 4 is the core actuator of this device. By driving the wire rope 3 to wind up and down, it dynamically adjusts the suspension position of the probe head 2 in the deep trench, ensuring that it accurately tracks changes in the concrete liquid level.

[0028] Furthermore, the servo motor 41 is an AC servo motor 41, which supports three-loop control of torque, speed and position, has a high positioning accuracy function to control the displacement of the wire rope 3, and has a high dustproof and waterproof rating to adapt to the humid and dusty environment of the construction site.

[0029] Furthermore, the roller 42 is made of wear-resistant and corrosion-resistant alloy material, and the surface is provided with spiral grooves to constrain the arrangement of the steel wire rope 3. Baffles are provided at both ends to prevent the steel wire rope 3 from falling off during winding. An electromagnetic brake is provided inside to achieve self-locking when power is cut off, preventing the probe head 2 from sinking uncontrollably in the event of an accidental power failure.

[0030] Furthermore, the rope guide 43 is fixed on the mounting base of the electric winch 4, located between the outer side of the drum 42 and the guide bracket of the wire rope 3. By moving back and forth, it guides the wire rope 3 to be wound and unwound in an orderly manner, preventing it from overlapping and tangling.

[0031] Furthermore, the rotary encoder 44 is installed on the shaft end of the drum 42. It adopts high-resolution multi-turn absolute encoding, which breaks through the cumulative error limitation of traditional incremental encoders and achieves accurate positioning of a large range of displacements. It is used to accurately measure the amount of retraction and release displacement and speed of the wire rope 3, and feeds it back to the electronic control system 6, thereby calculating the concrete liquid level height in real time.

[0032] Preferably, the tension sensor 5 is fixed on the tension sensor 5 mounting base and installed on the fixed section of the wire rope 3 between the electric winch 4 and the pulley 152. It features high sensitivity, high accuracy, excellent linearity, strong stability, and strong overload resistance, making it suitable for construction environments with high humidity, dust, and vibration. The tension sensor 5 collects the tension signal of the wire rope 3 in real time and transmits it to the electronic control system 6. The tension change reflects the buoyancy fluctuation experienced by the probe head 2, indirectly characterizing the change in liquid level.

[0033] Preferably, the electronic control system 6 includes a control panel 61 and a motor drive controller 62 for data acquisition, signal processing, closed-loop control and human-machine interaction. It calculates the concrete liquid level height in real time and drives the electric winch 4 to adjust it by fusing data from the tension sensor 5 and the encoder.

[0034] Preferably, the control panel 61 includes a main control unit, a sensor signal processing module, and a touch screen; the main control unit is used to execute control algorithms, the sensor signal processing module is used to receive, analyze, and output encoder and tension signals, and the touch screen has built-in multi-function buttons and a display module, which are used to set the take-up and release threshold according to the changes in tension signals and drive the electric winch 4 to automatically adjust the take-up and release distance of the wire rope 3. The main control unit calculates the real-time depth of the concrete liquid level based on the winding and unwinding stroke of the wire rope 3; the touch screen can display the real-time tension changes of the wire rope 3, the winding and unwinding speed and stroke of the wire rope 3, and the depth of the concrete liquid level; multiple control modes can be achieved through emergency stop, manual, and automatic mode switching. The control panel 61 allows for an intuitive understanding of the device's working status, and allows for flexible adjustment of relevant parameters according to actual needs, ensuring the efficient and accurate operation of the device.

[0035] Furthermore, the motor drive controller 62 receives instructions from the control panel 61 to precisely drive the electric winch 4 to adjust the winding speed and stroke of the wire rope 3, and can also manually control the operation of the electric winch 4 to achieve automatic and manual dual-mode drive.

[0036] Example 2: A method for using a real-time monitoring device for the liquid level in deep trench concrete pouring includes the following steps: S1, Density calibration of probe 2: First, the density of the upper hollow chamber and the lower counterweight chamber of probe head 2 were adjusted to the density of the slurry layer and the poured concrete, respectively, and then placed in a "1:1 simulation chamber" to verify its tracking and suspension performance. It was put into use only after the requirements were met. S2, Electronic Control System 6 Parameter Settings: Before using the device, set the trench section information parameters, concrete parameters, pouring safety margin, and tension release threshold information in the electronic control system 6. S3, Positioning of mounting bracket 1 and lowering of probe head 2: Before concrete pouring, the mounting frame 1 is placed at the corner of the trench opening. The electronic control system 6 is started to drive the electric winch 4 to lower the probe head 2 to the bottom of the deep trench. The device is started to measure the reference surface of the trench bottom and check it against the trench depth to eliminate structural errors. The probe head 2 is raised 50cm to prevent it from being completely buried in the concrete due to the excessive pouring speed when the concrete is opened. The mounting bracket 1 is placed at the corner of the slot opening to prevent the probe 2 from being subjected to the lateral pressure of the concrete, causing the wire rope 3 to shift laterally and resulting in inaccurate measured concrete liquid level elevation. At the same time, it also prevents the wire rope 3 from getting tangled in the embedded pipe or steel cage and damaging the device. S4, Real-time monitoring and adjustment of the pouring process: In the initial stage of concrete pouring, the concrete level elevation is manually measured three times via the remote control button of the motor drive controller 62. The device readings are automatically compared and corrected to eliminate random errors and verify the accuracy and effectiveness of the tension sensor 5 readings and the set threshold. During the pouring process, the probe 2 tracks the rise of the concrete level in real time, and the electric winch 4 dynamically adjusts the winding speed and stroke of the wire rope 3 by receiving instructions from the electronic control system 6. The concrete level elevation is manually measured three times per hour and checked and corrected against the data displayed on the control panel 61. S5, Data Recording and Output: During the concrete pouring process, the electronic control system 6 automatically calculates and records the winding and unwinding stroke of the wire rope 3 and the elevation of the concrete liquid level through the rotary encoder 44. The control panel 61 displays the above parameters in real time and exports the current data in tabular form through the background at any time for data analysis.

[0037] Preferably, in step S1, the "1:1 simulation chamber" is a scaled-down slotted casting model filled with concrete and grout flocculants. Concrete is poured into the model through the casting guide pipe, and the dynamic tracking capability of the probe head 2 on the concrete liquid surface is detected and adjusted.

[0038] Preferably, in step S2, the tension threshold is used to detect the slack and tight states of the wire rope 3: When the tension of the tension sensor 5 is less than the lower limit of the tension release threshold, it indicates that the probe 2 is tracking the rise of the concrete surface, causing the wire rope 3 to slack. The control panel 61 collects, analyzes, and processes the tension signal and sends a command to the motor drive controller 62 to precisely drive the electric winch 4 to tighten the wire rope 3. When the tension of the tension sensor 5 is greater than the upper limit of the tension release threshold, it indicates that the probe 2 is buried and wrapped in concrete, causing the wire rope 3 to be over-tightened. The motor drive controller 62 will drive the electric winch 4 to tighten the wire rope 3, allowing the probe 2 to break free from the concrete and achieve automatic adjustment.

[0039] Preferably, in step S4, during the initial stage of concrete pouring, the grout layer is relatively thin, and the error in measuring the concrete level is negligible. Comparing and correcting the data from manual and automatic measurements can improve the detection accuracy. During the pouring process, the thickness of the grout layer will affect the accuracy of the automatic detection data. The concrete level elevation is manually measured three times per hour and checked against the data displayed on the control panel 61 to improve the detection accuracy.

Claims

1. A real-time monitoring device for the liquid level in deep trench concrete pouring, characterized in that, The monitoring device includes a mounting frame (1), which is installed at the corner of the slot opening. An electric winch (4) is installed on the top of the mounting frame (1). One end of the electric winch (4) is connected to a wire rope (3) and a probe (2). A tension sensor (5) is installed on the surface of the wire rope (3). An electronic control system (6) is also installed on the top of the mounting frame (1) and connected to the electric winch (4) and the tension sensor (5). The mounting frame (1) includes a frame structure consisting of a base frame (11), an electric winch mounting base (12), a tension sensor mounting base (13), and an electronic control system mounting base (14). A wire rope guide assembly (15) is installed on the top of the frame structure and cooperates with the wire rope (3).

2. The real-time monitoring device for the liquid level in deep trench concrete pouring according to claim 1, characterized in that, The wire rope guide assembly (15) includes a wire rope guide bracket (151) and a pulley (152). The pulley (152) is fixed at the end of the wire rope guide bracket (151) and is used to guide and constrain the movement trajectory of the wire rope (3).

3. The real-time monitoring device for the liquid level in deep trench concrete pouring according to claim 1, characterized in that, The probe (2) is an oval-shaped structure with a hollow upper part and a counterweight lower part, and adopts a density difference suspension structure. The probe (2) includes two parts: a detachable upper hollow chamber and a lower counterweight chamber. The density of the upper hollow chamber is close to the density of the grout layer, and the density of the lower counterweight chamber is close to the density of the concrete, so that the probe (2) is stably suspended at the junction of the concrete liquid surface and the grout layer.

4. The real-time monitoring device for the liquid level in deep trench concrete pouring according to claim 1, characterized in that, The tension sensor (5) is fixed on the tension sensor mounting base (13) and installed on the fixed section of the wire rope (3) between the electric winch (4) and the pulley (152). The tension sensor (5) collects the tension signal of the wire rope (3) in real time and transmits it to the electronic control system (6).

5. The real-time monitoring device for the liquid level in deep trench concrete pouring according to claim 1, characterized in that, The electronic control system (6) includes a control panel (61) and a motor drive controller (62) for data acquisition, signal processing, closed-loop control and human-machine interaction. It calculates the concrete liquid level height in real time and drives the electric winch to adjust by fusing data from the tension sensor and encoder.

6. The real-time monitoring device for the liquid level in deep trench concrete pouring according to claim 1, characterized in that, The control panel (61) includes a main control unit, a sensor signal processing module and a touch screen; the main control unit is used to execute control algorithms, the sensor signal processing module is used to receive, analyze and output encoder and tension signals, and the touch screen has built-in multi-function buttons and a display module, which are used to set the take-up and release threshold according to the change of tension signal and drive the electric winch (4) to automatically adjust the take-up and release distance of the wire rope (3).

7. The method of using the real-time monitoring device for the liquid level in deep trench concrete pouring according to any one of claims 1-6, characterized in that, Includes the following steps: S1, Density calibration of probe (2): First, the density of the upper hollow chamber and the lower counterweight chamber of the probe (2) were adjusted to the density of the slurry layer and the concrete pouring, respectively, and then placed in a "1:1 simulation chamber" to verify its tracking and suspension properties. After meeting the requirements, it was put into use. S2, Electronic control system (6) parameter settings: Before using the device, set the trench section information parameters, concrete parameters, pouring safety margin, and tension release threshold information in the electronic control system (6); S3, Mounting bracket (1) positioning and probe head (2) lowering: Before concrete pouring, the mounting frame (1) is placed at the corner of the trench opening. The electronic control system (6) is started to drive the electric winch (4) to lower the probe (2) to the bottom of the deep trench. The device is started to measure the reference surface of the trench bottom and check it against the trench depth to eliminate structural errors. The fixed distance is raised to prevent the probe (2) from being completely buried in the concrete due to the excessive pouring speed when the concrete is opened. S4, Real-time monitoring and adjustment of the pouring process: In the early stage of concrete pouring, the concrete liquid level elevation is manually measured three times by the remote control button of the motor drive controller (62). The device readings are automatically compared and corrected to eliminate random errors and verify the accuracy and effectiveness of the tension sensor (5) readings and the set threshold. During the pouring process, the probe (2) tracks the rise of the concrete liquid level in real time. The electric winch (4) dynamically adjusts the wire rope winding speed and stroke by receiving instructions from the electronic control system (6). The concrete liquid level elevation is manually measured three times per hour and the data displayed on the control panel (61) is checked and corrected. S5, Data Recording and Output: During the concrete pouring process, the electronic control system (6) automatically calculates and records the wire rope (3) winding and unwinding stroke and the concrete liquid level elevation through the rotary encoder (44). The control panel (61) displays the above parameters in real time and exports the current data in tabular form through the background at any time for data analysis.

8. The method of using the real-time monitoring device for the liquid level in deep trench concrete pouring according to claim 7, characterized in that, In step S1, the "1:1 simulation chamber" is a scaled-down slotted casting model containing concrete and slurry flocculation. Concrete is poured into the model through the casting guide pipe, and the dynamic tracking ability of the probe (2) on the concrete liquid surface is detected and adjusted.

9. The method of using the real-time monitoring device for the liquid level in deep trench concrete pouring according to claim 7, characterized in that, In step S2, the tension threshold is used to detect the slack and tight states of the wire rope. When the tension of the tension sensor (5) is less than the lower limit of the tension release threshold, it indicates that the probe (2) is tracking the rise of the concrete liquid level, causing the wire rope (3) to loosen. The control panel (61) sends a command to the motor drive controller (62) by collecting, analyzing and processing the tension signal, and precisely drives the electric winch (4) to tighten the wire rope (3). When the tension of the tension sensor (5) is greater than the upper limit of the tension release threshold, it indicates that the probe (2) is buried and wrapped by the concrete, causing the wire rope (3) to be over-tightened. The motor drive controller (62) will drive the electric winch (4) to tighten the wire rope (3), so that the probe (2) can break free from the concrete and achieve automatic adjustment.

10. The method of using the real-time monitoring device for the liquid level in deep trench concrete pouring according to claim 7, characterized in that, In step S4, manual and automatic measurement data are compared and corrected in the early stage of concrete pouring; during the pouring process, the concrete liquid level elevation is manually measured three times per hour and checked and corrected against the data displayed on the control panel (61).

Images