Dredging equipment for reservoir and using method

Abstract

The invention discloses desilting equipment for a reservoir and a using method.The desilting equipment for the reservoir comprises a pair of high-pressure water guns, high-pressure water pipes are fixed to the water inlet ends of the high-pressure water guns correspondingly, pipe sleeves are fixed to the outer portions of the high-pressure water pipes correspondingly, the pipe sleeves are fixed to each other, and annular rails are slidably connected to the outer sides of the pipe sleeves; and a bottom cylinder is fixed at the lower end of the lifting mechanism. The lifting mechanism is arranged on the lower portion of the high-pressure water gun, the bottom plate is arranged on the lower portion of the lifting mechanism, the high-pressure water gun is supported through the bottom plate in a flat place, and the lifting mechanism can conveniently adjust the high-pressure water gun to a proper height. In this way, the ground plug can be inserted into soil, the stability of placing the high-pressure water gun is guaranteed, an operator does not need to carry the high-pressure water gun all the time for operation, the burden of the operator is relieved, and the dredging efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of dredging equipment, and particularly to a dredging equipment for reservoirs and its usage method. Background Art

[0002] With the intensification of the global water resource shortage problem, as an important fresh water reserve facility, the storage capacity of reservoirs directly affects the flood control and drought resistance efficiency and water supply safety. According to statistics, the average annual sedimentation rate of global reservoirs reaches 0.5% - 1.5%.

[0003] When dredging a reservoir, generally a high-pressure water gun is used in cooperation with a suction device for dredging. That is, the high-pressure water gun sprays high-pressure water flow to break up and wash up the silt, making it mix with water to form slurry, and then the slurry is discharged through the suction device. When using a high-pressure water gun to dredge a reservoir, the operator needs to hold the high-pressure water gun all the time and direct it towards the silt for scouring, which causes the operator to be more laborious and thus affects the dredging efficiency. Summary of the Invention

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide a dredging equipment for reservoirs and its usage method to solve the problems raised in the above background art.

[0005] The dredging equipment for reservoirs includes high-pressure water guns. There are a pair of the high-pressure water guns. The water inlet ends of the high-pressure water guns are both fixed with high-pressure water pipes. Pipe sleeves are fixed outside the high-pressure water pipes. The pipe sleeves are fixed to each other. An annular track is slidably connected to the outside of the pipe sleeves. A lifting mechanism is fixed to the lower end of the annular track. A bottom cylinder is fixed to the lower end of the lifting mechanism. A bottom plate is fixed to the lower end of the bottom cylinder. An upper bevel gear assembly is installed on the upper side inside the bottom cylinder. The upper bevel gear assembly is connected to the lifting mechanism. A lower bevel gear assembly is installed inside the bottom cylinder and below the upper bevel gear assembly. A lower screw rod is rotatably connected to the lower part inside the bottom cylinder. The upper part of the lower screw rod is connected to the lower bevel gear assembly. A ground plug is threadedly sleeved on the outside of the lower screw rod. Sliding plates are fixed to both ends of the ground plug. A guide rod is movably penetrated through the middle of the sliding plates. Both ends of the guide rod are fixed to the inner wall of the bottom cylinder.

[0006] Preferably, sliders are fixed to the mutually remote ends of the pipe sleeves. The other ends of the sliders are slidably connected to the annular track.

[0007] Preferably, the lifting mechanism includes a lifting rod, a sleeve and an upper screw rod. The lower part of the sleeve is fixed to the upper part of the bottom cylinder. The lifting rod is slidably connected inside the sleeve. The upper part of the lifting rod is fixed to the lower part of the annular track. The upper screw rod is rotatably connected inside the sleeve. A threaded channel is provided in the center of the lifting rod. The upper screw rod is located inside the threaded channel and is threadedly connected to the threaded channel.

[0008] Preferably, guide grooves are formed at both ends of the inner wall of the sleeve, guide bars are fixed at both ends of the lifting rod, and the guide bars are located inside the guide grooves and are slidably connected to the guide grooves.

[0009] Preferably, the upper bevel gear assembly includes an upper knob, an upper driven bevel gear and an upper driving bevel gear. The lower end of the upper screw rod penetrates into the bottom cylinder. The upper driven bevel gear is fixed at the lower end of the upper screw rod. The upper driving bevel gear is meshed and connected to one side of the upper driven bevel gear. The upper knob is fixed at one end of the upper driving bevel gear. The end of the upper knob penetrates through the bottom cylinder and is rotatably connected to the bottom cylinder.

[0010] Preferably, the lower bevel gear assembly includes a lower knob, a lower driving bevel gear and a lower driven bevel gear. The upper end of the lower screw rod is fixed with the lower driven bevel gear. The lower driving bevel gear is meshed and connected to one side of the lower driven bevel gear. The lower knob is fixed at one end of the lower driving bevel gear. The end of the lower knob penetrates through the bottom cylinder and is rotatably connected to the bottom cylinder.

[0011] Preferably, a bottom hole communicating with the bottom cylinder is formed at the lower end of the bottom plate. A plurality of rubber sheets are uniformly fixed on the inner wall of the bottom hole in a ring shape. The rubber sheets are fan-shaped, and the plurality of rubber sheets form a circle.

[0012] The present invention also discloses a method for using the above-mentioned reservoir dredging equipment, including: installing a wireless piezoelectric sensor on the sleeve and configuring a corresponding intelligent terminal. An application program for collecting signals of the wireless piezoelectric sensor is installed on the intelligent terminal. For different soil types, the corresponding initial insertion depth of the ground plug is set. The alarm threshold of the wireless piezoelectric sensor is set in the application program on the intelligent terminal. Start the high-pressure water gun to work. When the wireless piezoelectric sensor monitors that the vibration amplitude and vibration frequency of the sleeve reach the alarm threshold, an alarm is issued. At this time, the high-pressure water gun is paused, the lower knob is tightened to further insert the ground plug into the soil to keep it stable, and then the high-pressure water gun is started to work again. If the wireless piezoelectric sensor monitors again that the vibration amplitude and vibration frequency of the sleeve 7 reach the alarm threshold, an alarm is issued again, and so on, to ensure the stable operation of the high-pressure water gun.

[0013] The method for using the reservoir dredging equipment is also configured with a cloud platform. Data analysis and calculation are carried out through the cloud platform. The time nodes that need to be intervened are predicted for different land types, and an alarm is issued in advance. Specifically, the wireless piezoelectric sensor continuously collects data on the vibration amplitude and vibration frequency of the sleeve, transmits the data to the intelligent terminal, and then the intelligent terminal uploads it to the cloud platform. After receiving the data uploaded by the wireless piezoelectric sensor in real time, the cloud platform inputs the preprocessed feature vectors into the LSTM model for prediction. The model outputs a probability value between 0 and 1. According to the probability of the ground plug 20 loosening predicted by the model and in combination with a preset probability threshold, when the predicted probability exceeds the threshold, it is considered that the ground plug 20 is about to loosen.

[0014] Advantages of the present invention: For the reservoir dredging equipment, by arranging a lifting mechanism below the high-pressure water gun and a bottom plate below the lifting mechanism, the high-pressure water gun is supported by the bottom plate on a flat surface, and the lifting mechanism can conveniently adjust the high-pressure water gun to a suitable height. Then, if the soil is beside the reservoir, the lower knob can be rotated to move the ground plug downward out of the bottom cylinder and protrude from the bottom plate, so that the ground plug can be inserted into the soil to ensure the stability of placing the high-pressure water gun. In this way, it is not necessary for the operator to always hold the high-pressure water gun by hand, thus reducing the burden on the operator and improving the dredging efficiency. By installing a wireless piezoelectric sensor on the sleeve, the vibration condition of the equipment can be monitored in real time, and data analysis can be carried out through the intelligent terminal. When the vibration amplitude and frequency reach the set alarm threshold, the system will automatically issue an alarm to remind the operator to make adjustments. The combination of the intelligent terminal and the cloud platform enables the real-time monitoring of the equipment status, and through big data analysis and machine learning algorithms, the time node when the ground plug may become loose can be predicted, and an early warning can be issued in advance to reduce the equipment downtime and improve the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the whole of the present invention.

[0016] Figure 2 It is a schematic sectional view of the bottom cylinder of the present invention.

[0017] Figure 3 It is a schematic bottom view of the bottom plate of the present invention.

[0018] In the figure: 1 - high-pressure water gun, 2 - high-pressure water pipe, 3 - pipe sleeve, 4 - annular track, 5 - slider, 6 - lifting rod, 7 - sleeve, 8 - bottom cylinder, 9 - bottom plate, 10 - upper knob, 11 - lower knob, 12 - guide groove, 13 - guide bar, 14 - upper screw rod, 15 - upper driven bevel gear, 16 - upper driving bevel gear, 17 - lower driving bevel gear, 18 - lower driven bevel gear, 19 - lower screw rod, 20 - ground plug, 21 - slide plate, 22 - guide rod, 23 - bottom hole, 24 - rubber sheet. DETAILED DESCRIPTION OF THE INVENTION

[0019] Please refer to Figures 1-3, The reservoir dredging equipment includes a high-pressure water gun 1. There are a pair of the high-pressure water guns 1. The water inlet ends of the high-pressure water guns 1 are fixedly connected with high-pressure water pipes 2. The water inlet ends of the high-pressure water pipes 2 are connected with a high-pressure water pump. Pipe sleeves 3 are fixedly arranged outside the high-pressure water pipes 2. The pipe sleeves 3 are fixedly connected with each other. An annular track 4 is slidably connected to the outside of the pipe sleeves 3. One end of each pipe sleeve 3 away from the other is fixedly connected with a slider 5. The other end of the slider 5 is slidably connected with the annular track 4. Since the slider 5 can slide in a circular shape along the annular track 4, by rotating the two high-pressure water guns 1, the two vertically arranged high-pressure water guns 1 can be rotated to a horizontal arrangement, so as to conveniently rotate and adjust the high-pressure water guns 1 according to the dredging work.

[0020] A lifting mechanism is fixedly arranged at the lower end of the annular track 4. A bottom cylinder 8 is fixedly arranged at the lower end of the lifting mechanism. The lifting mechanism includes a lifting rod 6, a sleeve 7 and an upper screw rod 14. The lower part of the sleeve 7 is fixedly connected with the upper part of the bottom cylinder 8. The lifting rod 6 is slidably connected inside the sleeve 7. The upper part of the lifting rod 6 is fixedly connected with the lower part of the annular track 4. The upper screw rod 14 is rotatably connected inside the sleeve 7. A threaded channel is arranged in the center of the lifting rod 6. The upper screw rod 14 is located inside the threaded channel and is threadedly connected with the threaded channel. When the upper screw rod 14 rotates, with the threaded cooperation between the upper screw rod 14 and the threaded channel of the lifting rod 6, the lifting rod 6 can perform a lifting movement inside the sleeve 7.

[0021] Guide grooves 12 are formed at both ends of the inner wall of the sleeve 7. Guide bars 13 are fixedly arranged at both ends of the lifting rod 6. The guide bars 13 are located inside the guide grooves 12 and are slidably connected with the guide grooves 12. When the lifting rod 6 performs a lifting movement, the guide bars 13 can be driven to slide along the guide grooves 12. The cooperation between the guide bars 13 and the guide grooves 12 plays a guiding role.

[0022] A bottom plate 9 is fixedly arranged at the lower end of the bottom cylinder 8. An upper bevel gear assembly is installed on the upper side inside the bottom cylinder 8. The upper bevel gear assembly is connected with the lifting mechanism. The upper bevel gear assembly includes an upper knob 10, an upper driven bevel gear 15 and an upper driving bevel gear 16. The lower end of the upper screw rod 14 penetrates into the bottom cylinder 8. The upper driven bevel gear 15 is fixedly arranged at the lower end of the upper screw rod 14. The upper driving bevel gear 16 is meshed and connected to one side of the upper driven bevel gear 15. The upper knob 10 is fixedly arranged at one end of the upper driving bevel gear 16. The end of the upper knob 10 penetrates through the bottom cylinder 8 and is rotatably connected with the bottom cylinder 8. By rotating the upper knob 10, the upper knob 10 drives the upper driving bevel gear 16 to rotate. With the meshing between the upper driving bevel gear 16 and the upper driven bevel gear 15, the upper driven bevel gear 15 drives the upper screw rod 14 to rotate. Thus, by rotating the upper knob 10, the lifting of the lifting rod 6 can be adjusted, so as to ensure that the high-pressure water gun 1 is adjusted to a suitable height.

[0023] A lower bevel gear assembly is installed inside the bottom cylinder 8 and below the upper bevel gear assembly. A lower screw rod 19 is connected to the bottom of the inside of the bottom cylinder 8 by a bearing. The upper part of the lower screw rod 19 is connected to the lower bevel gear assembly. The lower bevel gear assembly includes a lower knob 11, a lower driving bevel gear 17 and a lower driven bevel gear 18. The lower driven bevel gear 18 is fixed to the upper end of the lower screw rod 19. The lower driving bevel gear 17 is meshed and connected to one side of the lower driven bevel gear 18. The lower knob 11 is fixed to one end of the lower driving bevel gear 17. The end of the lower knob 11 penetrates through the bottom cylinder 8 and is rotatably connected to the bottom cylinder 8. An earth spike 20 is sleeved on the outer thread of the lower screw rod 19. Both ends of the earth spike 20 are fixed with a sliding plate 21. A guide rod 22 is movably penetrated through the middle of the sliding plate 21. Both ends of the guide rod 22 are fixed to the inner wall of the bottom cylinder 8. When the high-pressure water gun 1 is supported by the bottom plate 9 on a flat place, and if the soil is beside the reservoir, the lower knob 11 can be rotated. The lower knob 11 drives the lower driving bevel gear 17 to rotate. As the lower driving bevel gear 17 meshes with the lower driven bevel gear 18, the lower driven bevel gear 18 drives the lower screw rod 19 to rotate. As the lower screw rod 19 is in threaded cooperation with the earth spike 20, the earth spike 20 can move up and down. In this process, the sliding plate 21 can be driven to move up and down along the guide rod 22. By moving the earth spike 20 out of the bottom cylinder 8 and protruding from the bottom plate 9, the earth spike 20 can be inserted into the soil to ensure the stability of placing the high-pressure water gun 1. In this way, the operator does not need to hold the high-pressure water gun 1 all the time. The operator only needs to hold the high-pressure water gun 1 without having to hold it forcefully, thereby reducing the burden on the operator and improving the dredging efficiency.

[0024] A bottom hole 23 communicating with the bottom cylinder 8 is opened at the lower end of the bottom plate 9. A plurality of rubber sheets 24 are evenly fixed on the inner wall of the bottom hole 23 in a ring shape. The rubber sheets 24 are fan-shaped. The plurality of rubber sheets 24 form a circle. When the bottom plate 9 is usually placed, the rubber sheets 24 can play a role in sealing the bottom hole 23. When the earth spike 20 protrudes from the bottom hole 23, the earth spike 20 will push open the rubber sheets 24 to prevent foreign objects from entering the bottom hole 23.

[0025] Support the high-pressure water gun 1 through the bottom plate 9 on a flat place. Then, if the area beside the reservoir is muddy, the lower knob 11 can be rotated. The lower knob 11 drives the lower driving bevel gear 17 to rotate. As the lower driving bevel gear 17 meshes with the lower driven bevel gear 18, the lower driven bevel gear 18 drives the lower screw rod 19 to rotate. As the lower screw rod 19 is in threaded fit with the ground plug 20, the ground plug 20 can move up and down. By moving the ground plug 20 downward out of the bottom cylinder 8 and protruding from the bottom plate 9, the ground plug 20 can be inserted into the soil to ensure the stability of placing the high-pressure water gun 1. By rotating the upper knob 10, the upper knob 10 drives the upper driving bevel gear 16 to rotate. As the upper driving bevel gear 16 meshes with the upper driven bevel gear 15, the upper driven bevel gear 15 drives the upper screw rod 14 to rotate. As the upper screw rod 14 is in threaded fit with the threaded channel of the lifting rod 6, the lifting rod 6 can move up and down inside the sleeve 7, so as to ensure that the high-pressure water gun 1 is adjusted to an appropriate height. In this way, only by holding the high-pressure water gun 1 and flushing the reservoir silt can the dredging work be carried out, and the dredging work can be completed by placing a suction device in the reservoir for silt pumping.

[0026] During use, especially when using this device on muddy ground, when the ground plug 20 is inserted into the muddy ground, due to the impact force of the high-pressure water gun 1, after using for a period of time, the ground plug 20 will become loose and manual intervention is required. Tighten the lower knob 11 to further insert the ground plug 20 into the ground to maintain stability. The whole process is time-consuming and laborious if relying on manual supervision. Therefore, a method for using a reservoir dredging device is provided.

[0027] A method for using a reservoir dredging device includes: installing a wireless piezoelectric sensor on the sleeve 7 and configuring a corresponding intelligent terminal. An application program for collecting the signals of the wireless piezoelectric sensor is installed on the intelligent terminal. For different soil qualities, set the corresponding initial insertion depth of the ground plug 20. Set the alarm threshold of the wireless piezoelectric sensor in the application program on the intelligent terminal. Start the high-pressure water gun 1 to work. When the wireless piezoelectric sensor monitors that the vibration amplitude and vibration frequency of the sleeve 7 reach the alarm threshold, an alarm is issued. At this time, pause the work of the high-pressure water gun 1, tighten the lower knob 11 to further insert the ground plug 20 into the ground to maintain stability, and then start the high-pressure water gun 1 to work again. If the wireless piezoelectric sensor monitors that the vibration amplitude and vibration frequency of the sleeve 7 reach the alarm threshold again, an alarm is issued again, and so on in a cycle to ensure the stable operation of the high-pressure water gun 1.

[0028] The initial insertion depth corresponding to the ground plug 20 is mainly set to adapt to the bearing capacities of different soil types, which vary greatly. For example, clay has a relatively high viscosity and can provide better support, while sandy soil has loose particles and weak support. By setting the initial insertion depth corresponding to the ground plug 20 for different soil types, the ground plug 20 can be inserted to an appropriate depth under various soil conditions, thus making full use of the bearing capacity of the soil and providing stable support for the high-pressure water gun 1 and the entire dredging equipment. If the insertion depth is too shallow, the equipment is likely to shake or even tip over under the impact of the high-pressure water gun 1. If the insertion depth is too deep, it will not only increase the operation difficulty but also may damage the soil structure and affect the support effect. The high-pressure water gun 1 generates a large impact force during operation, and this force is transmitted to the entire equipment. An appropriate initial insertion depth can enable the ground plug 20 to better resist this impact force and ensure the stability of the equipment during operation. For example, in soft soil, appropriately increasing the insertion depth of the ground plug 20 can increase the friction and contact area between the ground plug and the soil, effectively disperse the impact force of the high-pressure water gun, and prevent the ground plug from loosening and causing equipment displacement.

[0029] The wireless piezoelectric sensor is installed on the casing 7. When the high-pressure water gun 1 works to generate an impact force, causing the ground plug 20 to show a tendency to loosen, the casing 7 will generate corresponding vibrations. Based on the piezoelectric effect, the piezoelectric material inside the sensor will have a change in the charge distribution inside it under the stress generated by the vibration, generating charges on the two surfaces of the material, forming a weak potential difference signal related to the vibration amplitude and frequency. The magnitude of this potential difference signal is proportional to the vibration amplitude of the casing 7, and the change frequency of the signal is consistent with the vibration frequency of the casing 7. However, the initially generated signal is relatively weak, generally at the millivolt level, and is easily affected by external environmental noise. The sensor internally integrates a low-noise and high-gain amplifier circuit. An operational amplifier is used to construct the amplifier circuit, and its gain can be adjusted according to actual needs. Usually, the weak potential difference signal is amplified to a signal at the volt level for subsequent processing. In order to remove the external interference noise mixed in the signal, such as electromagnetic interference, mechanical vibration noise, etc., and ensure that the transmitted signal accurately reflects the true vibration situation of the casing 7, a band-pass filter circuit is used, and its passband range is set according to the possible vibration frequency range of the casing 7. For example, according to actual tests and analyses, the vibration frequency of the casing 7 mainly concentrates between 10 Hz and 100 Hz, then the passband of the band-pass filter circuit is set to 10 Hz - 100 Hz to effectively filter out the noise signals outside this range. The analog signal after amplification and filtering needs to be converted into a digital signal for transmission by the wireless communication module and processing by the intelligent terminal. An analog-to-digital converter (ADC) with a high resolution and sampling rate is selected. For example, a 12-bit or 16-bit ADC is used, which can accurately convert the analog signal into a digital quantity. The sampling rate is selected according to the highest frequency of the signal. Generally, the sampling rate should meet the Nyquist sampling theorem to ensure that the signal information is not lost. The signal transmission uses the ZigBee wireless communication protocol. ZigBee has the advantages of low power consumption, strong self-networking ability, and low cost, and is suitable for data transmission in the reservoir surrounding environment. The sensor internally integrates a ZigBee wireless communication module, which can establish a stable wireless communication connection with the intelligent terminal or the cloud platform. The digital signal after analog-to-digital conversion is packed according to a certain data format. The data format contains information such as the identification information of the sensor, vibration amplitude data, vibration frequency data, and acquisition time, which is convenient for the intelligent terminal to identify and process the data. The sending frequency of the signal is set according to actual needs. When the dredging equipment starts to work, in order to timely grasp the stability of the equipment, the sending frequency is set to a higher value, such as sending data once per second; after the equipment runs stably for a period of time, the sending frequency is appropriately reduced, such as sending data once every 5 seconds or 10 seconds to reduce power consumption and the amount of data transmission. After the ZigBee receiving module on the intelligent terminal receives the data packet sent by the wireless piezoelectric sensor, it analyzes and verifies the data to ensure the accuracy of the data.The application on the smart terminal displays the received vibration amplitude and frequency data in an intuitive chart form, which is convenient for operators to monitor the operating status of the equipment in real time. At the same time, the data is stored in the local database of the smart terminal for subsequent analysis and query.

[0030] The method for setting the alarm threshold of the wireless piezoelectric sensor includes the following steps: selecting representative different soil areas around the reservoir, such as clay, sand, loam, etc., installing dredging equipment respectively and starting the high-pressure water gun 1 to conduct experiments. During the experiment, the vibration amplitude and frequency data of the casing 7 collected by the wireless piezoelectric sensor are recorded, and the corresponding vibration parameters when the ground plug 20 becomes loose are recorded. The experiment is carried out multiple times to obtain sufficient sample data. The collected data are classified and sorted according to the soil type, and the change law of the vibration amplitude and frequency when the ground plug 20 works stably and starts to loosen under different soils is analyzed. In addition to considering different soil factors, it is also necessary to simulate different dredging conditions, such as different spray angles of the high-pressure water gun 1, different water flow pressures, etc. Experiments are carried out under each working condition, the vibration data of the casing 7 is recorded, and the influence of different working conditions on the vibration parameters is analyzed. The data obtained from the experiment and simulation test are summarized to establish a database containing the vibration data of the casing 7 under different soils and different working conditions, which provides a reference for the setting of the alarm threshold.

[0031] According to the vibration amplitude data of the ground plug 20 in stable operation under different soil types and working conditions in the database, its average value and standard deviation are calculated. Generally speaking, the alarm threshold of the vibration amplitude can be set to the average value plus a certain multiple of the standard deviation. For example, for clay soil, the average value of the vibration amplitude in stable operation is 5mV, and the standard deviation is 2mV. The alarm threshold can be set to 5+3×2=11mV. In this way, the signs of loosening of the ground plug 20 can be found in time while ensuring the normal operation of the equipment.

[0032] When setting the vibration amplitude threshold, a certain safety margin needs to be considered. This is because there may be some unforeseen factors in the actual working environment, such as sudden water flow impact, minor equipment failure, etc. Therefore, the threshold setting value can be appropriately increased to avoid false alarms. For example, in the above embodiment, the alarm threshold can be increased to 12mV.

[0033] Analyze the changing characteristics of the vibration frequency when the ground plug 20 is loose under different soil types and working conditions. Generally speaking, when the ground plug 20 is loose, the vibration frequency will change significantly, and will suddenly increase from the low frequency range during stable operation to the high frequency range. According to this feature, set the alarm threshold of the vibration frequency. For example, in sandy soil, the vibration frequency of the ground plug 20 is mainly between 10-30Hz when it is working stably. When the frequency exceeds 60Hz, it means that the ground plug 20 is loose, so the alarm threshold of the vibration frequency can be set to 60Hz.

[0034] To improve the accuracy of the alarm, the setting of the vibration frequency threshold needs to be comprehensively judged in combination with the vibration amplitude threshold. When the vibration amplitude reaches a certain value (such as exceeding the vibration amplitude threshold), and at the same time the vibration frequency also exceeds the set frequency threshold, the alarm is triggered. This can avoid false alarms caused by fluctuations in a single parameter.

[0035] The application program of the intelligent terminal monitors the vibration data collected by the wireless piezoelectric sensor in real time and compares the data with the set alarm threshold. When the monitored data approaches or reaches the alarm threshold, relevant information is timely fed back to the operator, such as popping up a prompt box, emitting a sound alarm, etc. The operator adjusts the alarm threshold appropriately according to the feedback information of the intelligent terminal and in combination with the actual working conditions. For example, if it is found that false alarms occur frequently in actual work, the alarm threshold can be appropriately increased; if it is found that the alarm is not timely, the alarm threshold can be appropriately decreased.

[0036] Data analysis and calculation can also be carried out through the cloud platform. For different land types, predict the time nodes that need to be intervened, and send out alarms in advance to reserve time to intervene on site, including the steps: The wireless piezoelectric sensor continuously collects the vibration amplitude and vibration frequency data of the casing 7, and transmits them to the intelligent terminal at a frequency of once per second (in the initial stage of equipment startup) or every 5 - 10 seconds (after the equipment runs stably) through the ZigBee protocol. Then the intelligent terminal uploads them to the cloud platform via Wi-Fi or 4G / 5G network.

[0037] Sort out the vibration parameter data when the ground plug 20 works stably and becomes loose under different soil qualities and working conditions recorded in the experiment, integrate them with the real-time collected data to form a comprehensive data set. Then clean and normalize the data, and extract the statistical features of the vibration amplitude and frequency, including the mean, variance, and standard deviation.

[0038] Construct a long short-term memory network (LSTM) model. LSTM is a special recurrent neural network that can effectively process long-term dependencies in sequential data. The stability of the ground plug 20 is closely related to the vibration data, environmental data, etc. in the past period of time, and the LSTM model can capture this time series information.

[0039] Input layer: Input the preprocessed feature vectors, including vibration amplitude and vibration frequency features.

[0040] LSTM layer: It contains multiple LSTM units, and controls the transmission and memory of information through a gating mechanism (input gate, forget gate, output gate).

[0041] Fully connected layer: Maps the output of the LSTM layer to a single output value, representing the probability that the ground plug 20 will become loose at a certain future time node.

[0042] Output layer: Uses the Sigmoid activation function to limit the output value within the range of [0, 1], facilitating probability prediction.

[0043] Training process: Divide the training set, validation set, and test set, and the ratio can be set to 70%, 15%, 15%.

[0044] Use the Adam optimizer to minimize the loss function, and the loss function is selected as the binary cross-entropy loss function; During the training process, use the early stopping strategy. When the loss function on the validation set does not decrease for multiple consecutive epochs, stop the training to prevent overfitting.

[0045] According to the probability that the ground plug 20 becomes loose predicted by the model, combined with the preset probability threshold, when the predicted probability exceeds this threshold, it is considered that the ground plug 20 is about to become loose.

[0046] Specifically, after the cloud platform receives the data uploaded in real time by the wireless piezoelectric sensor, it inputs the feature vector that has undergone preprocessing (cleaning, normalization, feature extraction) into the trained LSTM model for prediction. The model outputs a probability value between 0 and 1, representing the probability that the ground plug 20 will become loose at a certain future time node. For example, at a certain moment, the probability value output by the model is 0.75. The cloud platform compares the probability value predicted by the model with the preset probability threshold for the current soil quality and working conditions. If the current soil is sandy soil and the high-pressure water gun 1 works with specific parameters, the preset probability threshold is 0.7, and the model prediction probability is 0.75. Since 0.75 > 0.7, it is considered that the ground plug 20 is about to become loose at this time.

[0047] By analyzing the changing trend of the model prediction results over time, determine the time node that needs intervention. When the predicted probability starts to rise rapidly, predict how long it will be before the ground plug 20 becomes loose from the current time. When the cloud platform predicts that the ground plug 20 is about to become loose, it immediately sends a warning message to the intelligent terminal. After receiving the warning message, the intelligent terminal reminds the operator to take measures in time by means of popping up a prompt box, sounding an alarm, etc., pauses the operation of the high-pressure water gun 1, and tightens the lower knob 11 to further insert the ground plug 20 into the soil.

[0048] During the operation of the dredging equipment, the impact force of the high-pressure water gun 1 continuously acts on the ground plug 20. If the ground plug 20 becomes loose and is not dealt with in time, it will cause the overall shaking and even toppling of the equipment. By accurately predicting the time node of the loosening of the ground plug 20 through the cloud platform, the operator can take measures in advance, such as tightening the lower knob 11 to further insert the ground plug 20 into the soil before the predicted loosening time, to avoid damage to the high-pressure water gun 1, the high-pressure water pipe 2 and other components caused by the shaking of the equipment, and extend the service life of the equipment.

[0049] Dredging work usually needs to be carried out continuously. Frequent suspension of work due to the instability of the equipment caused by the loosening of the ground plug 20 will seriously affect the dredging progress. The prediction function of the cloud platform allows the operator to make preparations in advance, and reasonably arrange the time to adjust the ground plug 20 without affecting the dredging effect, reduce the equipment downtime, and ensure the continuity of the dredging work. After the cloud platform predicts the possible loosening time node of the ground plug 20, the operator can reasonably arrange the work process and personnel division of labor according to the prediction result. At the same time, the maintenance and repair work of the equipment can also be reasonably arranged according to the prediction situation. Stable equipment operation is the key to ensuring the dredging effect. When the ground plug 20 is stable, the high-pressure water gun 1 can maintain a relatively stable spraying angle and pressure, and scour the reservoir silt more accurately, improving the quality and effect of dredging. The prediction function of the cloud platform helps to maintain the stability of the equipment, thus indirectly improving the dredging effect. In the absence of the prediction function of the cloud platform, it is necessary to manually inspect the equipment regularly to find out whether the ground plug 20 is loose. This not only requires a large amount of manpower and time, but also the inspection interval may cause some potential problems to be undetected in time. The prediction function of the cloud platform can monitor the equipment status in real time, early warn the time node of the loosening of the ground plug 20, reduce the frequency and workload of manual inspection, and reduce the labor cost.

Claims

1. A reservoir desilting device, comprising a high-pressure water gun (1), wherein the high-pressure water gun (1) is a pair, and a high-pressure water pipe (2) is fixed to the water inlet end of each high-pressure water gun (1), characterized in that: The high-pressure water pipe (2) is fixed with a pipe sleeve (3) on the outside. The pipe sleeves (3) are fixed to each other. The outside of the pipe sleeve (3) is slidably connected with a circular track (4). A lifting mechanism is fixed to the lower end of the circular track (4). A bottom cylinder (8) is fixed to the lower end of the lifting mechanism. A bottom plate (9) is fixed to the lower end of the bottom cylinder (8). An upper bevel gear assembly is installed on the upper side of the bottom cylinder (8). The upper bevel gear assembly is connected to the lifting mechanism. A lower bevel gear assembly is installed inside the bottom cylinder (8) and below the upper bevel gear assembly. A lower screw rod (19) is connected to a bearing at the lower bottom of the bottom cylinder (8). The upper part of the lower screw rod (19) is connected to the lower bevel gear assembly. A ground plug (20) is provided on the outer threaded sleeve of the lower screw rod (19). Slide plates (21) are fixed at both ends of the ground plug (20). A guide rod (22) is fixed to the middle of the slide plate (21) and is movably penetrated by the guide rod (22). Both ends of the guide rod (22) are fixed to the inner wall of the bottom cylinder (8).

2. The reservoir desilting equipment according to claim 1, characterized in that: A slider (5) is fixed to one end of the pipe sleeve (3) that is away from each other, and the other end of the slider (5) is slidably connected to the annular track (4).

3. The reservoir desilting equipment according to claim 1, characterized in that: The lifting mechanism comprises a lifting rod (6), a sleeve (7) and an upper screw (14); the lower portion of the sleeve (7) is fixed to the upper portion of the bottom cylinder (8); the lifting rod (6) is slidably connected inside the sleeve (7); the upper portion of the lifting rod (6) is fixed to the lower portion of the annular track (4); the upper screw (14) is rotatably connected inside the sleeve (7); a threaded channel is provided at the center of the lifting rod (6); the upper screw (14) is located inside the threaded channel and is threadedly connected to the threaded channel.

4. The reservoir desilting equipment according to claim 3, characterized in that: Both ends of the inner wall of the sleeve (7) are provided with guide grooves (12), and both ends of the lifting rod (6) are fixed with guide bars (13), wherein the guide bars (13) are located inside the guide grooves (12) and are slidably connected to the guide grooves (12).

5. The reservoir desilting equipment according to claim 3, characterized in that: The upper bevel gear assembly comprises an upper knob (10), an upper driven bevel gear (15) and an upper driving bevel gear (16); the lower end of the upper screw rod (14) passes through the interior of the bottom cylinder (8); the upper driven bevel gear (15) is fixed to the lower end of the upper screw rod (14); the upper driving bevel gear (16) is meshedly connected to one side of the upper driven bevel gear (15); the upper knob (10) is fixed to one end of the upper driving bevel gear (16); and the rear end of the upper knob (10) passes through the bottom cylinder (8) and is rotationally connected to the bottom cylinder (8).

6. The reservoir desilting equipment according to claim 1, characterized in that: The lower bevel gear assembly comprises a lower knob (11), a lower active bevel gear (17) and a lower driven bevel gear (18); the lower driven bevel gear (18) is fixed to the upper end of the lower screw rod (19); the lower active bevel gear (17) is meshingly connected to one side of the lower driven bevel gear (18); the lower knob (11) is fixed to one end of the lower active bevel gear (17); and the lower end of the lower knob (11) passes through the bottom cylinder (8) and is rotationally connected to the bottom cylinder (8).

7. The reservoir desilting equipment according to claim 1, characterized in that: A bottom hole (23) communicating with the bottom cylinder (8) is formed at the lower end of the bottom plate (9); the inner wall of the bottom hole (23) is annular and has a plurality of rubber sheets (24) evenly fixed thereon; the rubber sheets (24) are fan-shaped, and the plurality of rubber sheets (24) form a circle.

8. The method for using the reservoir desilting equipment according to any one of claims 1 to 6, characterized in that: include: A wireless piezoelectric sensor is installed on the casing (7), and a corresponding intelligent terminal is configured. An application program for collecting wireless piezoelectric sensor signals is installed on the intelligent terminal. The initial insertion depth of the ground plug (20) is set according to different soil types. The alarm threshold of the wireless piezoelectric sensor is set in the application program on the intelligent terminal. The high-pressure water gun (1) is started. When the wireless piezoelectric sensor detects that the vibration amplitude and vibration frequency of the casing (7) reach the alarm threshold, an alarm is issued. At this time, the high-pressure water gun (1) is suspended. The lower knob (11) is tightened to further penetrate the ground plug (20) into the soil to maintain stability. Then, the high-pressure water gun (1) is started again. If the wireless piezoelectric sensor detects that the vibration amplitude and vibration frequency of the casing 7 reach the alarm threshold again, an alarm is issued again. This cycle is repeated to ensure the stable operation of the high-pressure water gun (1).

9. The method for using the reservoir desilting equipment according to claim 8, characterized in that: A cloud platform is also configured to perform data analysis and calculation through the cloud platform, predict the time nodes that require intervention for different land types, and issue an alarm in advance. Specifically, the wireless piezoelectric sensor continuously collects the vibration amplitude and vibration frequency data of the casing (7), transmits the data to the intelligent terminal, and then uploads the data to the cloud platform by the intelligent terminal. After receiving the data uploaded in real time by the wireless piezoelectric sensor, the cloud platform inputs the preprocessed feature vector into the LSTM model for prediction. The model outputs a probability value between 0 and 1. According to the probability of the ground plug 20 being loose predicted by the model and combined with a preset probability threshold, when the predicted probability exceeds the threshold, it is considered that the ground plug 20 is about to be loose.

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