Hydrological water resource survey device and method

Abstract

The application discloses a hydrology and water resource survey device and method, relates to the technical field of ocean exploration sampling, and comprises a steel cable, a support structure, a liquid taking mechanism, a liquid containing mechanism and a moving mechanism. The liquid taking mechanism comprises a vertical slide and a sliding block. The liquid containing mechanism comprises multiple groups of sample tanks. The moving mechanism comprises a cable holding block. In the application, as the device sinks, the cable holding block in the moving mechanism rotates while moving downward, so that the sliding block is lifted upward through a transmission structure. When the sliding block contacts a pressing plate, the sliding block stops moving, and a male quick connector is connected with a female quick connector, so that seawater is input into the sample tank. Since the steel cable has a standard specified spiral angle, the sliding block is lifted to a specified height when the cable holding block rotates a specified number of turns by adjusting the gear transmission ratio, so that the device samples after moving downward to a specified depth, and the sampling depth of the sample meets the actual setting.

Description

Technical Field

[0001] This invention relates to the field of marine exploration and sampling technology, specifically to a hydrological and water resources surveying device and method. Background Technology

[0002] Hydrological and water resource surveying encompasses multiple aspects, including hydrological measurement, geological drilling, and water quality testing. Water quality testing primarily involves the detection of chemical and biological indicators. In marine hydrological and water resource surveying, key indicators include salinity, nutrients (such as nitrates and phosphates), heavy metal ions, and plankton levels in seawater. These data are crucial for assessing marine ecological conditions, analyzing the feasibility of seawater desalination, monitoring saltwater intrusion, and monitoring changes in nearshore water quality. They form a vital foundation for comprehensive marine water resource assessment and protection management. Currently, when conducting equidistant sampling of marine water, water pressure is typically used to open the valve of a designated sampling tube. This involves lowering the sampling device to a specified depth, triggering the valve via a water pressure sensor, and then closing the valve after seawater has entered the tube, thus completing the sampling of seawater at the designated depth.

[0003] However, in practical applications, triggering sampling valves by water pressure presents certain problems. While ocean water pressure increases with depth, it does not exhibit a strictly linear change in all areas, particularly in thermoclines, haloclines, or areas affected by ocean current disturbances, where the water density structure is complex, leading to localized nonlinearities in water pressure changes. If the sampling device relies solely on a preset water pressure threshold to control valve opening, adjacent sampling points may become too close due to abnormal water pressure curves, compromising the accuracy of evenly spaced sampling. This error is particularly detrimental in fine-grained stratification analysis or the detection of sensitive parameters (such as pollutant concentration gradients), potentially resulting in decreased data representativeness or distortion. Summary of the Invention

[0004] The purpose of this invention is to provide a hydrological and water resources surveying device and method to address the shortcomings of the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a hydrological and water resources surveying device, comprising a steel cable, characterized in that it further comprises:

[0006] The support structure includes a tank frame and two support plates that are movably sleeved on steel cables;

[0007] The liquid dispensing mechanism includes multiple vertical slides fixedly connected inside the tank rack. A connecting frame is fixedly connected between the vertical slide and the support plate. A slider is slidably connected inside the vertical slide. Multiple first sliding grooves are opened on the side of the vertical slide. A quick-connect male connector is slidably connected inside the slider.

[0008] A liquid holding mechanism includes multiple sample containers, with a floating plate slidably connected inside each sample container. The top of the floating plate passes through the sample container and is fixedly connected to an inclined block. A horizontal slide is slidably connected to the top surface of each sample container. A pressure plate is fixedly connected to one side of the horizontal slide, and a quick-connect female connector is fixedly connected to the side of each sample container.

[0009] The moving mechanism includes a cable gripping block movably sleeved on the outside of the steel cable, the cable gripping block being rotatably mounted inside an upper support plate, a main gear being fixedly connected to the outer side of the cable gripping block, and the cable gripping block rotating as it moves downward along the steel cable, guided by a recess on the surface of the steel cable.

[0010] Preferably, the pressure plate is slidably connected in the first slide groove, and when the inclined block moves upward, the pressure plate no longer contacts the slider when the horizontal slide moves in the direction of the vertical slide.

[0011] Preferably, a DC pump is fixedly connected to the bottom surface of the vertical slide, and a flexible hose is provided inside the vertical slide. One end of the flexible hose is connected to the DC pump, and the other end is connected to a quick-connect male connector inside the slider.

[0012] Preferably, an electric push rod is fixedly connected inside the slider. The telescopic end of the electric push rod is fixedly connected to a quick-connect male connector. One end of the electric push rod is connected to a circuit tube located inside the slider. The other end of the circuit tube is connected to the top surface of the slider and a pressure column is slidably connected inside it. After the pressure column is completely pressed into the circuit tube by the pressure plate, a contact switch inside the circuit tube is triggered, causing the telescopic end of the electric push rod to extend.

[0013] Preferably, a plurality of centrally symmetrical auxiliary gears are rotatably mounted inside the upper support plate. The auxiliary gears mesh with the main gear. A reversing gearbox and a reduction gearbox are fixedly connected to the top surface of the upper connecting frame. The input shaft of the reversing gearbox is coaxially fixed with the auxiliary gears, and its output end is connected to the input shaft of the reduction gearbox. A rope shaft is fixedly sleeved on the output shaft of the reduction gearbox. A cable is wound on the rope shaft. The free end of the cable passes through the top of the vertical slide and is connected to the top of the slider.

[0014] Preferably, an anti-rotation mechanism is fixedly installed on the top surface of the support plate. The anti-rotation mechanism includes a base fixedly connected to the top surface of the support plate, a plurality of wheel frames are rotatably installed on the base, a roller is rotatably installed at one end of the wheel frame, the roller abuts against the steel cable, and a torsion spring is sleeved between the wheel frame and the base to make the roller rotate in the direction of the steel cable.

[0015] Preferably, the quick-connect male connector has an open design, and the quick-connect female connector is provided with a pin and an elastic element. When the push of the electric push rod is lost, the quick-connect male connector separates from the quick-connect female connector, at which time the quick-connect female connector is closed by the pin.

[0016] Preferably, the DC pump is always kept on, and the battery pack driving the DC pump is fixedly connected to the bottom surface of the support plate located below.

[0017] Preferably, a counterweight is fixedly connected to the bottom end of the steel cable, and the steel cable remains vertical when the support structure slides down.

[0018] A method for hydrological and water resource surveying includes the following steps:

[0019] S1: Pass the steel cable through the support plate and the main gear;

[0020] S2: Connect the counterweight to the steel cable and lower it into the ocean via a winch, while leaving the support plate and main gear on the ship;

[0021] S3: Install the cable clamp onto the steel cable and assemble other structures;

[0022] S4: Lower the device from the horizontal plane to move it underwater and take samples;

[0023] S5: Retrieve the device and counterweight by using a winch to recover the steel cable.

[0024] In the above technical solution, the hydrological and water resources surveying device and method provided by the present invention can rotate the cable block in the moving mechanism as the device sinks, thereby lifting the slider upward through the transmission structure. When the slider contacts the pressure plate, the slider stops moving and the quick-connect male and quick-connect female connectors are connected, thereby inputting seawater into the sample tank. Since the steel cable has a standard helical angle, it is only necessary to adjust the gear transmission ratio so that the slider is lifted to a specified height when the cable block rotates a specified number of times. This allows the device to sample after sinking to a specified depth, unlike traditional devices that use water pressure to drive valves to open for sampling. This method avoids the nonlinear water pressure caused by seawater stratification and temperature changes, which can result in a short opening interval between the two valves and an excessively small actual distance between the two samples, ensuring that the sampling depth of the sample conforms to the actual setting. Attached Figure Description

[0025] 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.

[0026] Figure 1 This is a schematic diagram of the overall structure of a hydrological and water resources surveying device according to the present invention;

[0027] Figure 2 This invention relates to a hydrological and water resources surveying device. Figure 1Enlarged view of point A in the middle;

[0028] Figure 3 This is a schematic cross-sectional view of the support plate structure of a hydrological and water resources surveying device according to the present invention;

[0029] Figure 4 This invention relates to a hydrological and water resources surveying device. Figure 3 Enlarged view of point B in the middle;

[0030] Figure 5 This is a schematic diagram of the liquid sampling mechanism of a hydrological and water resources surveying device according to the present invention;

[0031] Figure 6 This is a schematic cross-sectional view of the slider structure of a hydrological and water resources surveying device according to the present invention;

[0032] Figure 7 This is a schematic diagram of the structure of the sample tank and liquid extraction mechanism of the hydrological and water resources surveying device of the present invention when they are connected;

[0033] Figure 8 This is a schematic diagram of the structure of the sample container of the hydrological and water resources surveying device of the present invention when it is not full;

[0034] Figure 9 This is a schematic diagram of the structure of the sample tank and liquid extraction mechanism of the hydrological and water resources surveying device of the present invention after the sample tank is filled;

[0035] Figure 10 This is a schematic diagram of the cable-holding block and main gear structure of a hydrological and water resources surveying device according to the present invention.

[0036] Explanation of reference numerals in the attached drawings: 1. Steel cable; 2. Support structure; 21. Tank rack; 22. Support plate; 23. Connecting frame; 3. Liquid taking mechanism; 31. Vertical slide; 32. Slider; 33. Quick-connect male connector; 34. Hoses; 35. First chute; 36. Electric push rod; 37. Circuit conduit; 38. Pressure column; 39. DC pump; 4. Liquid holding mechanism; 41. Sample tank; 42. Floating plate; 43. Inclined block; 44. Horizontal slide; 45. Pressure plate; 46. Quick-connect female connector; 5. Moving mechanism; 51. Cable holding block; 52. Main gear; 53. Secondary gear; 54. Reversing gearbox; 55. Reduction gearbox; 56. Rope shaft; 57. Cable; 6. Anti-rotation mechanism; 61. Base; 62. Wheel frame; 63. Roller. Detailed Implementation

[0037] 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.

[0038] Please see Figures 1 to 10 The present invention provides a hydrological and water resources surveying device, including a steel cable 1, and further comprising:

[0039] The support structure 2 includes a tank frame 21 and two support plates 22 that are movably sleeved on the steel cable 1;

[0040] The liquid dispensing mechanism 3 includes multiple vertical slides 31 fixedly connected inside the tank rack 21. A connecting frame 23 is fixedly connected between the vertical slides 31 and the support plate 22. A slider 32 is slidably connected inside the vertical slides 31. Multiple first slide grooves 35 are opened on the side of the vertical slides 31. A quick-connect male connector 33 is slidably connected inside the slider 32.

[0041] The liquid holding mechanism 4 includes multiple sample containers 41. A float 42 is slidably connected inside the sample container 41. The top of the float 42 passes through the sample container 41 and is fixedly connected to an inclined block 43. A horizontal slide 44 is slidably connected to the top surface of the sample container 41. A pressure plate 45 is fixedly connected to one side of the horizontal slide 44. A quick-connect female connector 46 is fixedly connected to the side of the sample container 41.

[0042] The moving mechanism 5 includes a cable gripping block 51 that is movably sleeved on the outside of the steel cable 1. The cable gripping block 51 is rotatably mounted inside the upper support plate 22. A main gear 52 is fixedly connected to the outer side of the cable gripping block 51. When the cable gripping block 51 moves downward along the steel cable 1, it is guided to rotate by the recess on the surface of the steel cable 1.

[0043] In an embodiment of the present invention, when the support structure 2, the liquid extraction mechanism 3, and the liquid holding mechanism 4 move downward in seawater under the action of gravity, as the device moves down a certain distance, the liquid holding mechanism 4 blocks the slider 32, causing it to enter the liquid extraction state to draw seawater into the sample tank 41. This enables the sampling of seawater at the current depth after the device moves down a specified distance, ensuring that the sampling depth of the sample strictly conforms to the set depth, rather than sampling at different depths by changing the seawater pressure.

[0044] When the slider 32 abuts against the bottom surface of the pressure plate 45, as the device is about to move downwards, the slider 32 is relatively fixed relative to the vertical slide 31, thereby locking the entire device in the current position, preventing the device from moving downwards. This ensures that when the device samples seawater at the current depth, it can accurately obtain the sample at the current depth, ensuring the accuracy of the sample and avoiding sampling during movement, which would result in a mixed sample of different depths, densities, and water layers.

[0045] When seawater is injected into the sample container 41, the floating plate 42 is pushed upward by the seawater, causing the horizontal slide 44 to push the pressure plate 45, so that the pressure plate 45 is no longer in contact with the pressure column 38 and the slider 32, allowing the slider 32 to continue to move upward. This allows the device to be unlocked after sampling is completed, so that it can continue to sink to sample deeper seawater.

[0046] In the embodiments of the present invention, please refer to Figures 7 to 9 The pressure plate 45 is slidably connected in the first slide groove 35. When the inclined block 43 moves upward, the pressure plate 45 no longer contacts the slider 32 when the horizontal slide 44 moves in the direction of the vertical slide 31.

[0047] The pressure plate 45 is used to prevent the slider 32 from moving upward when there is not enough sample in the corresponding sample container 41, thereby stopping the entire device from sinking and ensuring accurate sampling depth. When the sample container 41 is filled with enough water sample, the inclined block 43 pushes the horizontal slide 44, so that the slider 32 is no longer in contact with the pressure plate 45, causing the quick-connect male connector 33 to separate from the quick-connect female connector 46. Thus, when there is no sample in the current sample container 41, the device can automatically stop sinking and sample at the current height when the slider 32 contacts the pressure plate 45. After sampling is completed, it can automatically unlock, allowing the device to continue sinking to sample deeper seawater.

[0048] In the embodiments of the present invention, please refer to Figures 5 to 6 A DC pump 39 is fixedly connected to the bottom surface of the vertical slide 31. A hose 34 is installed inside the vertical slide 31. One end of the hose 34 is connected to the DC pump 39, and the other end is connected to the quick-connect male connector 33 inside the slider 32.

[0049] With the help of the hose 34, the impact force of the seawater pumped by the DC pump 39 when it is ejected from the quick-connect male 33 is the same, no matter what height the slider 32 slides to. At the same time, because the DC pump 39 is symmetrically arranged around the steel cable 1, the water flow impact force on the sample tanks 41 around the whole device is always the same when the whole device moves down along the steel cable 1. Thus, during the liquid collection process, the water flow impact forces in all directions cancel each other out, avoiding the device from tilting on the steel cable 1 due to the impact force in one direction being greater than that in other directions, thereby ensuring the stability of the whole device during collection.

[0050] In the embodiments of the present invention, please refer to Figures 6 to 9 An electric push rod 36 is fixedly connected inside the slider 32. The telescopic end of the electric push rod 36 is fixedly connected to the quick-connect male connector 33. One end of the electric push rod 36 is connected to a circuit tube 37 located inside the slider 32. The other end of the circuit tube 37 is connected to the top surface of the slider 32 and a pressure column 38 is slidably connected inside it. After the pressure column 38 is completely pressed into the circuit tube 37 by the pressure plate 45, the contact switch inside the circuit tube 37 is triggered, causing the telescopic end of the electric push rod 36 to extend.

[0051] By default, the pressure column 38 is pushed by the reset spring inside the circuit tube 37 and is in the extended state of the circuit tube 37. At this time, since the contact switch inside the circuit tube 37 is not triggered, the telescopic end of the electric push rod 36 is in the retracted state. As the slider 32 moves upward and contacts the pressure plate 45, the pressure column 38 is gradually pressed into the wiring tube 37. When the pressure column 38 is fully pressed into the wiring tube 37, it contacts the contact switch and triggers the electric push rod 36, causing the telescopic end of the electric push rod 36 to slowly extend. Since the pressure column 38 is fully pressed into the wiring tube 37, the top surface of the slider 32 abuts against the bottom surface of the pressure plate 45, thus aligning the quick-connect female connector 46 with the quick-connect male connector 33, ensuring the accurate connection between the quick-connect female connector 46 and the movable quick-connect male connector 33. As the pressure plate 45 separates from the pressure column 38, the pressure column 38 resets under the rebound drive of its internal return spring. At this time, since the contact switch is no longer triggered, the telescopic end of the electric push rod 36 retracts. The retraction of the electric push rod 36 separates the quick-connect male connector 33 from the quick-connect female connector 46, allowing the slider 32 to continue moving upward.

[0052] In the embodiments of the present invention, please refer to Figures 3 to 4 The upper support plate 22 has multiple centrally symmetrical auxiliary gears 53 rotatably mounted inside. The auxiliary gears 53 mesh with the main gear 52. The top surface of the upper connecting frame 23 is fixedly connected to a reversing gearbox 54 and a reduction gearbox 55. The input shaft of the reversing gearbox 54 is fixedly coaxially with the auxiliary gear 53, and its output end is connected to the input shaft of the reduction gearbox 55. The output shaft of the reduction gearbox 55 is fixedly sleeved with a rope shaft 56. A cable 57 is wound on the rope shaft 56. The free end of the cable 57 passes through the top of the vertical slide 31 and is connected to the top of the slider 32. The cable 57 is made of a non-elastic material to ensure that the slider 32 can be accurately pulled to move during its service life.

[0053] The reversing gearbox 54 and the reduction gearbox 55 work together to convert the power provided by the main gear 52, thereby driving the rope shaft 56 to rotate so that the cable 57 is wound around the rope shaft 56. The reduction gearbox 55 reduces the speed to prevent the rope shaft 56 from winding the cable 57 too quickly, thereby preventing the slider 32 from sliding upward quickly and impacting the pressure plate 45, thus ensuring the service life of the pressure plate 45.

[0054] Depend on Figure 3It is understood that the main gear 52 and the cable clamping block 51 are both rotatably mounted in the upper support plate 22. After the cable clamping block 51 and the main gear 52 are mounted in the support plate 22, conventional cleaning parts such as cleaning brushes and shovels are installed in the lower support plate 22 to pre-clean up any solid contaminants that may exist on the steel cable 1 (such as sand particles attached to the steel cable 1). Then, an elastic isolation block is installed in the upper support plate 22 below the cable clamping block 51, so that the upper support plate 22 provides the effect of isolating and filtering external solid objects, preventing external fixed contaminants from entering the upper support plate 22 and causing the contact surface between the cable clamping block 51 and the steel cable 1 to be scratched, thereby ensuring the service life of the cable clamping block 51.

[0055] Since the cable clamp 51 needs to slide along the steel cable 1 for a long time, it must be made of materials with high wear resistance and high hardness, such as hard tool steel, which increases its processing cost. Therefore, the cable clamp 51 needs to be protected. The cleaning parts and elastic isolation blocks (such as rubber blocks) set in the support plate 22 can use conventional parts to reduce the cost of equipment use.

[0056] In the embodiments of the present invention, please refer to Figures 1 to 2 An anti-rotation mechanism 6 is fixedly installed on the top surface of the support plate 22. The anti-rotation mechanism 6 includes a base 61 fixedly connected to the top surface of the support plate 22. Multiple wheel frames 62 are rotatably installed on the base 61. A roller 63 is rotatably installed at one end of the wheel frame 62. The roller 63 abuts against the steel cable 1. A torsion spring is sleeved between the wheel frame 62 and the base 61 to make the roller 63 rotate in the direction of the steel cable 1.

[0057] By using the anti-rotation mechanism 6, the roller 63 of the anti-rotation mechanism 6 clamps the steel cable 1 during the downward movement of the entire device, preventing the support plate 22 connected to the anti-rotation mechanism 6 from rotating. This ensures that only the cable holding block 51 and the main gear 52 located in the upper support plate 22 rotate during the sinking process. At the same time, the roller 63 applies a lateral force to the steel cable 1 under the action of the torsion spring, thereby "tightening" the steel cable 1 and helping to prevent the steel cable 1 from loosening during the downward movement of the device. This ensures that the cable holding block 51 can always pull the slider 32 up a specified distance after sinking a specified distance, ensuring the accuracy of the sampling depth.

[0058] In the embodiments of the present invention, the quick-connect male connector 33 is an open design, and the quick-connect female connector 46 is provided with a pin and an elastic element. When the quick-connect male connector 33 loses the push of the electric push rod 36, the quick-connect female connector 46 is closed by the pin.

[0059] In an embodiment of the present invention, the DC pump 39 is always kept on, and the battery pack driving the DC pump 39 is fixedly connected to the bottom surface of the support plate 22 located below.

[0060] The always-on DC pump 39 ensures that the seawater in the hose 34 is always at the bottom of the device, thus ensuring that the sample injected into the sample container 41 when the device stops sinking is a sample at the accurate height.

[0061] The battery pack is fixed to the bottom of the support plate 22 located below. On the one hand, it can serve as an auxiliary counterweight for the device. On the other hand, since the DC pump 39 is always on, the flowing water at the bottom of the device will come into contact with the battery pack's casing, thereby removing the heat from the battery pack and ensuring its health.

[0062] In an embodiment of the present invention, a counterweight is fixedly connected to the bottom end of the steel cable 1, and the steel cable 1 remains vertical when it slides down the support structure 2.

[0063] The counterweight can be a single heavy object (such as a metal block, water tank, etc.) or other equipment that needs to sample seabed materials. This allows for the immediate sampling of seawater at different depths after the seabed material is sampled, avoiding the need to hoist multiple sampling devices multiple times, improving the efficiency of the sampling work and reducing working time.

[0064] This invention also provides a hydrological and water resources survey method, implemented using the aforementioned hydrological and water resources survey device, specifically including the following steps:

[0065] S1: Pass the steel cable 1 through the support plate 22 and the main gear 52;

[0066] S2: Connect the counterweight to the steel cable 1 and lower it into the ocean via a winch, while leaving the support plate 22 and the main gear 52 on the ship;

[0067] S3: Install the cable clamp 51 onto the steel cable 1 and assemble the other structures;

[0068] S4: Lower the device from the horizontal plane to move it underwater and take samples;

[0069] S5: Retrieve the device and counterweight by using a winch to recover steel cable 1.

[0070] Therefore, the hydrological and water resources surveying method provided by this invention should also have the effects brought about by the above-mentioned hydrological and water resources surveying device, which will not be described in detail.

[0071] In an embodiment of the present invention, when the support structure 2, the liquid extraction mechanism 3, and the liquid holding mechanism 4 move downward in seawater under the action of gravity, as the device moves downward, the support plate 22 will drive the cable holding block 51 to slide downward on the steel cable 1. Because the cable holding block 51 has protrusions inside that engage with the recessed steel cable 1, it will rotate, thereby driving the main gear 52 to rotate. Through the transmission of the secondary gear 53, the reversing gearbox 54, and the reduction gearbox 55, the cable 57 will be wound around the rope shaft 56. At this time, as the cable 57 is wound, the slider 32 is pulled upward within the vertical slide frame 31. Since there is no sample in the sample container 41, the float 42 is not raised, causing the pressure plate 45 to be positioned on the upward path of the slider 32. Then, as the slider 32 slides upward, the pressure column 38 contacts the pressure plate 45 and is pressed into the line tube 37 as the slider 32 continues to rise. The air inside the conduit 37 is compressed. When the top surface of the slider 32 contacts the pressure plate 45, the telescopic end of the electric push rod 36 is triggered by the air pressure sensor connected to it and extends outward, thus pushing the quick-connect male connector 33 outward. Since the slider 32 is in contact with the pressure plate 45 at this time, the quick-connect male connector 33 will insert into the quick-connect female connector 46 after extending, thereby drawing seawater into the sample tank 41. Since the rope shaft 56 will only rotate when the cable block 51 rotates, and the helix angle (also known as the twist angle) of the steel cable 1 is strictly defined, by adjusting the transmission ratio of the moving mechanism 5, the cable block 51 can raise the slider 32 to a corresponding height after rotating one revolution. This allows the seawater to be sampled at the current depth after the device moves down a specified distance, ensuring that the sampling depth strictly conforms to the set depth, rather than sampling at different depths by changing the seawater pressure.

[0072] When the slider 32 abuts against the bottom surface of the pressure plate 45, as the device is about to move downwards, the slider 32 is relatively fixed relative to the vertical slide 31, preventing the cable 57 from continuing to be wound on the rope shaft 56. At this time, the rope shaft 56 cannot continue to rotate, and therefore the secondary gear 53, which is connected to the rope shaft 56, cannot rotate either. Consequently, the main gear 52 cannot rotate, and the cable holding block 51 cannot rotate either. Thus, under the action of the internal protrusion of the cable holding block 51, the entire device stops at the current position and remains stationary. This allows the device to accurately obtain samples at the current depth when sampling seawater at the current depth, ensuring sample accuracy and avoiding sampling during movement that results in mixed samples of different depths, densities, and water layers.

[0073] During the process of seawater being injected into the sample container 41, when the sample container 41 is about to be filled, the float 42 floats upward under the push of the seawater, thereby pushing the horizontal slide 44 towards the vertical slide 31 through the inclined block 43 connected to its top, so that the pressure plate 45 no longer contacts the pressure column 38, thereby preventing the air in the line tube 37 from being compressed, thereby causing the telescopic end of the electric push rod 36 to retract. At this time, the quick-connect male connector 33 and the quick-connect female connector 46 separate, thereby sealing the sample container 41, and allowing the slider 32 to continue to move upward to sample seawater at a deeper depth. Thus, after stopping the descent to sample, the device can automatically release the steel cable 1 as the sampling is completed, and continue to descent to sample.

[0074] Working principle: During the overall sinking of the device, as the cable holding block 51 slides downward on the steel cable 1, the protrusion inside the cable holding block 51 will rotate under the guidance of the concave surface of the steel cable 1. When the cable holding block 51 rotates, the main gear 52 will also rotate, thereby driving the secondary gear 53 to rotate. Through the conversion of the reversing gear box 54 and the reduction gear box 55, the rotation of the cable holding block 51 will eventually be converted into the rotation of the rope shaft 56. As the rope shaft 56 rotates, it will wind the cable 57, at which point the slider 32 will be lifted upward.

[0075] As the slider 32 moves upward, the top of the pressure column 38 contacts the pressure plate 45, and the pressure column 38 is pressed down, thereby compressing the gas in the circuit tube 37. When the top surface of the slider 32 contacts the bottom surface of the pressure plate 45, the slider 32 can no longer be pulled up, thus preventing the rope shaft 56 from rotating. The gear connected by the transmission fixes the cable block 51 to the steel cable 1, and the entire device stops on the steel cable 1. At this time, because the pressure column 38 is completely pressed into the circuit tube 37, the air pressure in the circuit tube 37 is sufficient to trigger the air pressure sensor connected to the electric push rod 36, thereby controlling the extension end of the electric push rod 36 to extend, so that the quick-connect male connector 33 is inserted into the quick-connect female connector 46, and the seawater pumped by the DC pump 39 is injected into the sample tank 41.

[0076] When a sufficient amount of seawater is injected into the sample tank 41, the float 42 is pushed upward, thereby pushing the horizontal slide 44 by the push of the inclined block 43, so that the pressure plate 45 is no longer in contact with the slider 32. At this time, due to the removal of the obstruction of the pressure plate 45, the gas volume in the line tube 37 expands again. At this time, the electric push rod 36 retracts, thereby causing the quick-connect male connector 33 to disconnect from the quick-connect female connector 46. At the same time, due to the removal of the obstruction of the pressure plate 45, the slider 32 can continue to slide upward.

[0077] Once slider 32 is moved to the top, the device has completed sampling seawater at different heights. Then, the winch is used to retrieve steel cable 1 and the device, and the samples are taken out of sample container 41 for testing.

[0078] 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. A hydrological and water resources surveying device, comprising a steel cable (1), characterized in that, Also includes: The support structure (2) includes a tank rack (21) and two support plates (22) that are movably sleeved on the steel cable (1). The liquid dispensing mechanism (3) includes multiple vertical slides (31) fixedly connected inside the tank rack (21). A connecting frame (23) is fixedly connected between the vertical slides (31) and the support plate (22). A slider (32) is slidably connected inside the vertical slides (31). Multiple first slide grooves (35) are opened on the side of the vertical slides (31). A quick-connect male connector (33) is slidably connected inside the slider (32). The liquid holding mechanism (4) includes multiple sample containers (41), with a float (42) slidably connected inside the sample container (41). The top of the float (42) passes through the sample container (41) and is fixedly connected to an inclined block (43). A horizontal slide (44) is slidably connected to the top surface of the sample container (41). A pressure plate (45) is fixedly connected to one side of the horizontal slide (44). A quick-connect female connector (46) is fixedly connected to the side of the sample container (41). The moving mechanism (5) includes a cable holding block (51) movably sleeved on the outside of the steel cable (1), the cable holding block (51) being rotatably mounted inside the upper support plate (22), the outer side of the cable holding block (51) being fixedly connected to a main gear (52), and the cable holding block (51) being rotated by a recess on the surface of the steel cable (1) as it moves downward along the steel cable (1); A DC pump (39) is fixedly connected to the bottom surface of the vertical slide (31). A hose (34) is provided inside the vertical slide (31). One end of the hose (34) is connected to the DC pump (39), and the other end is connected to the quick-connect male connector (33) inside the slider (32). Multiple centrally symmetrical auxiliary gears (53) are rotatably mounted inside the upper support plate (22). The auxiliary gears (53) mesh with the main gear (52). The top surface of the upper connecting frame (23) is fixedly connected to a reversing gearbox (54) and a reduction gearbox (55). The input shaft of the reversing gearbox (54) is coaxially fixed with the auxiliary gear (53), and its output end is connected to the input shaft of the reduction gearbox (55). The output shaft of the reduction gearbox (55) is fixedly sleeved with a rope shaft (56). A cable (57) is wound on the rope shaft (56). The free end of the cable (57) passes through the top of the vertical slide (31) and is connected to the top of the slider (32).

2. The hydrological and water resources surveying device according to claim 1, characterized in that, The pressure plate (45) is slidably connected in the first slide groove (35). When the inclined block (43) moves upward, the pressure plate (45) no longer contacts the slider (32) when the horizontal slide (44) moves in the direction of the vertical slide (31).

3. The hydrological and water resources surveying device according to claim 1, characterized in that, An electric push rod (36) is fixedly connected inside the slider (32). The telescopic end of the electric push rod (36) is fixedly connected to a quick-connect male connector (33). One end of the electric push rod (36) is connected to a circuit tube (37) located inside the slider (32). The other end of the circuit tube (37) is connected to the top surface of the slider (32) and a pressure column (38) is slidably connected inside it. After the pressure column (38) is completely pressed into the circuit tube (37) by the pressure plate (45), the contact switch inside the circuit tube (37) is triggered, causing the telescopic end of the electric push rod (36) to extend.

4. The hydrological and water resources surveying device according to claim 1, characterized in that, An anti-rotation mechanism (6) is fixedly installed on the top surface of the support plate (22). The anti-rotation mechanism (6) includes a base (61) fixedly connected to the top surface of the support plate (22). Multiple wheel frames (62) are rotatably installed on the base (61). A roller (63) is rotatably installed at one end of the wheel frame (62). The roller (63) abuts against the steel cable (1). A torsion spring is sleeved between the wheel frame (62) and the base (61) to make the roller (63) rotate in the direction of the steel cable (1).

5. A hydrological and water resources surveying device according to claim 1, characterized in that, The quick-connect male connector (33) is an open design, and the quick-connect female connector (46) is provided with a pin and an elastic element. When the quick-connect male connector (33) loses the push of the electric push rod (36), it separates from the quick-connect female connector (46), and at this time the quick-connect female connector (46) is closed by the pin.

6. A hydrological and water resources surveying device according to claim 1, characterized in that, The DC pump (39) is always kept on, and the battery pack that drives the DC pump (39) is fixedly connected to the bottom surface of the support plate (22) located below.

7. A hydrological and water resources surveying device according to claim 1, characterized in that, The bottom end of the steel cable (1) is fixedly connected to a counterweight, and the steel cable (1) remains vertical when the support structure (2) slides down.

8. A method for hydrological and water resources surveying, implemented based on the hydrological and water resources surveying apparatus according to any one of claims 1-7, characterized in that, Includes the following steps: S1: Pass the steel cable (1) through the support plate (22) and the main gear (52); S2: Connect the counterweight to the steel cable (1) and lower it into the ocean via a winch, while leaving the support plate (22) and the main gear (52) on the ship; S3: Install the cable clamp (51) onto the steel cable (1) and assemble the other structures; S4: Lower the device from the horizontal plane to move it underwater and take samples; S5: Retrieve the cable (1) by winch to retrieve the device and counterweight.

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