A measurement and acquisition system for a sandy lake-groundwater composite system

Abstract

The present invention discloses a measurement and collection system for a sandy lake-groundwater composite system. When the system drives the collector to descend through a cable, the threaded rod drives the threaded sleeve to rotate, and the rack drives the movable ring to move downward through the gear transmission. When the movable ring descends to a predetermined position, the threaded ring engages with the inner thread of the fixed ring, driving the end face gear to rotate, and the contact plate is pushed into close contact with the well wall through the driven gear and the active screw sleeve, forming a stable support structure, which effectively improves the stability of the system in a strong wind environment. During sampling, the pumping motor drives the active incomplete gear to engage with each layer of gear in turn, driving the driven incomplete gear and the gear ring to move, so that the piston rod slides back and forth in the pumping pipe, realizing automatic collection of water samples at different depths. The system can complete multi-depth sampling by simply releasing the cable. It is easy to operate and has good stability. It is particularly suitable for groundwater collection operations in harsh desert environments and can effectively ensure the accuracy and continuity of sampling data.

Description

Technical Field

[0001] The present invention relates to the technical field of groundwater collection, and in particular to a measurement and collection system for a sandy lake-groundwater composite system. Background Art

[0002] In arid and semi-arid regions such as the Maowusu Desert, studying the evolutionary mechanisms and synergistic checks and balances of the sandy lake-groundwater complex system is a key scientific issue for desertification control and sustainable water resource utilization. These regions suffer from harsh climatic conditions, with frequent strong winds and sandstorms, resulting in complex and variable dynamic interactions between surface water and groundwater. To reveal the eco-hydrological feedback loop within the sandy land, long-term, precise monitoring and sampling of the water quantity, water quality, and dynamic changes within the sandy lake-groundwater complex system are necessary. However, in traditional measurement and collection systems for sandy lake-groundwater complex systems, groundwater collection equipment lacks stability in strong winds and is prone to shaking or tipping, making it difficult to ensure the continuity and accuracy of sampling data.

[0003] Furthermore, research on the complex lake-groundwater system in deserts requires collecting water samples at varying depths to analyze vertical water cycle characteristics and eco-hydrological coupling mechanisms. Existing measurement and collection systems often require manual intervention or complex mechanical adjustments when switching sampling depths, making operation cumbersome and inefficient. In the extreme desert environment, frequent equipment adjustments not only increase the workload but can also cause equipment damage or sampling failures, compromising the comprehensiveness and representativeness of scientific research data.

[0004] Therefore, there is an urgent need to develop a measurement and collection system specifically for the sandy lake-groundwater composite system to solve the equipment stability problem in strong wind environments and realize the automated collection of water samples at multiple depths, providing reliable technical support for the research on the coordinated checks and balances mechanism of sandy lakes and groundwater, and helping to achieve the goals of desertification prevention and control and sustainable water resources management. Summary of the Invention

[0005] The purpose of the present invention is to provide a measurement and acquisition system for a sandy lake-groundwater composite system to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a measurement and acquisition system for a sandy lake-groundwater composite system, comprising a vehicle frame;

[0007] A threaded sleeve is rotatably mounted on the frame, a main transmission gear meshing with a secondary transmission gear is fixed on the threaded sleeve, a driving bevel gear meshing with a driven bevel gear is coaxially fixed to the secondary transmission gear, a rotating gear meshing with a rack is fixed on the driven bevel gear, the threaded sleeve can be threadedly connected to the threaded rod, a cable is fixed above the threaded rod, and a collector is fixed below the threaded rod;

[0008] A fixed ring with a movable ring slidably arranged inside is fixed on the frame, the movable ring is fixedly connected to the rack, and a threaded ring that can be threadedly connected to the fixed ring is rotatably arranged on the surface of the threaded ring. An end gear is fixed to the lower end of the threaded ring, and the end gear is meshed with a driven gear coaxially fixed with a driving screw sleeve. The internal thread of the driving screw sleeve is connected to a driven screw with a contact plate installed at one end;

[0009] A pumping motor that drives the active incomplete gear to rotate is fixed inside the collector. The active incomplete gear can engage with the upper gear of the coaxially fixed driven incomplete gear. The driven incomplete gear engages with the gear ring with a piston rod fixed at one end. The piston rod is slidably installed in the pumping pipe. When the driven incomplete gear rotates, it drives the gear ring to move.

[0010] Preferably, a cable rack is rotatably provided on the vehicle frame, one end of the cable is fixedly connected to the cable rack, a main mounting frame for fixing the auxiliary mounting frame is fixed on the vehicle frame, a fixed pulley is rotatably provided on the upper end of the auxiliary mounting frame, and the surface of the fixed pulley is in contact with the surface of the cable.

[0011] Preferably, a hollow sleeve is fixedly provided on the auxiliary mounting frame, the inner surface of the hollow sleeve is in contact with the surface of the cable, the upper end of the hollow sleeve is fixedly connected to the limit frame, a protrusion is provided on the inner surface of the limit frame, a protrusion corresponding to the same is provided on the surface of the cable, and the lower end of the hollow sleeve is rotatably connected to the upper surface of the main transmission gear.

[0012] Preferably, a slide rail is fixedly provided at the lower end of the auxiliary mounting frame, and a rack is slidably installed in the slide rail, and the rack can slide up and down along the slide rail.

[0013] Preferably, a limit block is provided in the slide rail to limit the maximum movement distance of the rack to prevent it from detaching from the slide rail.

[0014] Preferably, the number of the driven gears is six, and they are arranged in a circular array with the axis of the threaded ring as the center.

[0015] Preferably, one end of the driven screw is fixedly connected to the mounting base, one end of the mounting base is fixedly provided with a longitudinal sliding plate rail, one end of the connecting rod is slidably installed in the longitudinal sliding plate rail, one end of the connecting rod is fixedly connected to one end of the vibration-damping telescopic rod and the reset spring, the other end of the vibration-damping telescopic rod and the reset spring is fixedly connected to the inner wall of the longitudinal sliding plate rail, the reset spring is sleeved on the surface of the vibration-damping telescopic rod, the other side of the longitudinal sliding plate rail is slidably connected to the contact plate, the other end of the connecting rod is fixedly connected to one side of the longitudinal sliding plate, the contact plate is slidably connected to the longitudinal sliding plate, and the contact plate can be in contact with the well wall.

[0016] Preferably, the output end of the water pumping motor is fixedly connected to one end of the driving connecting rod, the axial direction of the driving connecting rod is perpendicular to the axial direction of the output end of the water pumping motor, and the other end of the driving connecting rod is fixedly connected to the active incomplete gear.

[0017] Preferably, the number of upper gears, driven incomplete gears and ring gears are four, and they are arranged in a circular array with the axis of the output end of the pumping motor as the center. One end of the water pumping pipe is fixedly provided with one end of the first one-way valve, and the other end of the first one-way valve is fixedly connected to the water suction port, and the water suction port extends out of the collector. The surface of the water pumping pipe is fixedly connected to the second one-way valve and is connected to the second one-way valve. The second one-way valve is fixedly connected to one end of the water supply pipe, and the other end of the water supply pipe is fixedly connected to the water inlet of the water tank, and the water tank is fixedly arranged in the collector.

[0018] Preferably, the lower end of the threaded sleeve is coaxially fixedly connected to the limit plate, the limit plate is hollow cone-shaped, the threaded rod can pass through the limit plate and engage with the threaded sleeve, and a conical surface corresponding to the limit plate is provided at the upper end of the collector, and the upper end surface of the collector can contact and connect with the inner wall of the limit plate.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] When using this measurement and collection system to collect groundwater in a sandy lake-groundwater composite system, the collector is lowered by releasing the cable fixed with the threaded rod. The descent of the collector drives the threaded rod downward and then drives the threaded sleeve to rotate. The threaded sleeve drives the main transmission gear thereon to rotate at the same time. The main transmission gear drives the secondary transmission gear to rotate. The driving bevel gear coaxially arranged on the lower surface of the secondary transmission gear rotates synchronously and drives the driven bevel gear meshing with it to rotate. The driven bevel gear drives the rotating gear to rotate while rotating, and the rotation of the rotating gear drives the rack to slide downward.

[0021] When the rack descends, the rack drives the movable ring to slide downward in the fixed ring. After the movable ring descends a certain distance, the threaded ring on the surface of the movable ring is screwed with the thread on the inner wall of the fixed ring. At this time, while the movable ring drives the threaded ring to descend, the threaded ring will rotate at the same time. When the threaded ring rotates, the end gear at its lower end rotates around the axis of the movable ring. When the end gear rotates, it drives the driven gear meshing with it to rotate, and the active screw sleeve coaxially fixed with the driven gear rotates in the same direction. The rotation of the active screw sleeve drives the driven screw inside it to extend, and pushes the contact plate fixedly connected to the driven screw to move away from the movable ring until the contact plate contacts the well wall of the groundwater well and is supported on the well wall.

[0022] The above mechanism enables the contact plate to extend, open and contact the well wall while the collector descends. After the contact plate contacts and is supported on the well wall, the friction between the contact plate and the well wall improves the stability of the movable ring and the fixed ring. The stability of the movable ring and the fixed ring reacts on the frame of the measurement and collection system, thereby improving the stability of the frame. The frame of the measurement and collection system is the basic structure that supports and fixes other components of the system. The improvement of the frame stability can improve the overall stability of the measurement and collection system, thereby improving the stability of the measurement and collection system in a strong wind environment, making it less likely to shake or tip over, thereby ensuring the continuity and accuracy of the sampling data.

[0023] After the collector descends to the target sampling depth in the well, the pumping motor drives the active incomplete gear to rotate around the axis of the pumping motor's output end. The active incomplete gear first meshes with an upper gear, driving the upper gear to rotate, which in turn drives the driven incomplete gear coaxially fixed to the upper gear to rotate simultaneously. The rotation of the driven incomplete gear drives the ring gear to move, which in turn drives the piston rod fixed to the ring gear to slide within the pumping pipe, drawing the groundwater in the well into the pumping pipe, completing the water sample collection at that sampling depth. The cable is then released to allow the collector to continue descending to the next target sampling depth. The pumping motor drives the active incomplete gear to rotate until it meshes with another upper gear, repeating the above sampling process to complete the water sample collection at that target depth. The cable is then released again until water samples are collected at all target sampling depths.

[0024] The above mechanism can realize the automatic sampling of groundwater at multiple depths by simply releasing the cable to lower the collector to different sampling depths through the drive of the pumping motor. There is no need to switch the sampling depth through complex mechanical adjustments, which improves the convenience and efficiency of the sampling operation and is suitable for multi-depth water sample collection in extreme desert environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of a measurement and acquisition system for a sandy lake-groundwater composite system according to the present invention;

[0026] Figure 2 This is a structural diagram of the threaded sleeve and threaded rod of a measurement and collection system for a sandy lake-groundwater composite system according to the present invention, with the U-shaped frame and collector removed.

[0027] Figure 3 This is a schematic diagram of the limit frame structure of a measurement and acquisition system for a sandy lake-groundwater composite system of the present invention;

[0028] Figure 4 This is a schematic structural diagram of the fixed ring and movable ring of a measurement and collection system for a sandy lake-groundwater composite system according to the present invention;

[0029] Figure 5 for Figure 4 A local enlarged view of point A;

[0030] Figure 6 This is a schematic diagram of the internal structure of a collector of a measurement and collection system for a sandy lake-groundwater composite system of the present invention;

[0031] Figure 7 This is a schematic diagram of the external structure of a collector of a measurement and collection system for a sandy lake-groundwater composite system of the present invention;

[0032] Figure 8 This is a schematic structural diagram from another angle inside the collector of a measurement and collection system for a sandy lake-groundwater composite system of the present invention, showing the structure of the active incomplete gear.

[0033] In the figure: 1, frame, 101, support wheel, 102, operating handle, 103, cable, 104, cable rack, 105, fixed pulley, 106, counterweight, 107, drive motor, 201, main mounting frame, 202, auxiliary mounting frame, 204, hollow sleeve, 2041, limit frame, 205, U-shaped frame, 206, threaded sleeve, 207, main transmission gear, 208, threaded rod, 209, limit plate, 210, auxiliary transmission gear, 211, driving bevel gear, 212, driven bevel gear, 2121, transmission connecting rod, 2122, rotating gear, 213, rack, 214, slide rail, 215, collector, 216, first counterweight, 301, fixing ring, 3 02. Movable ring, 303. Threaded ring, 304. End gear, 305. Driven gear, 306. Active screw sleeve, 307. Driven screw, 308. Mounting base, 309. Longitudinal sliding plate rail, 310. Connecting rod, 311. Vibration-damping telescopic rod, 312. Return spring, 313. Longitudinal sliding plate, 3131. Contact plate, 401. Pumping motor, 402. Driving connecting rod, 403. Active incomplete gear, 404. Upper gear, 405. Driven incomplete gear, 406. Ring gear, 408. Piston rod, 409. Pumping pipe, 410. First one-way valve, 411. Water suction port, 412. Second one-way valve, 413. Water pipe, 414. Water tank. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] See also Figure 1-8 , the present invention provides a technical solution:

[0036] like Figure 1 As shown, in order to improve the stability of the measurement and collection system when sampling water samples, a measurement and collection system for a sandy lake-groundwater composite system is proposed, including a frame 1, four independently rotating support wheels 101 are rotatably arranged at the lower end of the frame 1, the support wheels 101 can contact the ground, and support the frame 1 to move on the ground, one end of the frame 1 is fixedly connected to two operating handles 102, and the operator can push the frame 1 to move through the operating handles 102, a counterweight block 106 is fixedly arranged at the rear of the frame 1, and a sampling assembly is installed in the front of the frame 1, and the setting of the counterweight block 106 can increase the weight of the frame 1 itself, so that the mass of the frame 1 is greater than the mass of the sampling assembly as a whole, thereby improving the stability of the frame 1 and achieving a balance between the frame 1 and the sampling assembly. A cable rack 104 is rotatably provided on the frame 1, and one end of the cable 103 is fixedly connected to the cable rack 104. The cable rack 104 is cylindrical, and its axis is fixedly connected to the output end of the drive motor 107. The forward and reverse rotation of the drive motor 107 is used to realize the forward and reverse rotation of the cable rack 104, thereby realizing the release and winding of the cable 103 on the cable rack 104.

[0037] A main mounting frame 201 is fixedly mounted on the end of the vehicle frame 1 away from the operating handle 102. A secondary mounting frame 202 is fixedly mounted on the main mounting frame 201. The main mounting frame 201 and the secondary mounting frame 202 are used to mount the sampling assembly. A fixed pulley 105 is rotatably mounted on the upper end of the secondary mounting frame 202. The surface of the fixed pulley 105 is in contact with the surface of the cable 103.

[0038] A U-shaped frame 205 is fixedly mounted on the auxiliary mounting frame 202. The sampling assembly includes a main transmission gear 207, an auxiliary transmission gear 210 and a threaded sleeve 206 rotatably mounted on the U-shaped frame 205 (the auxiliary transmission gear 210 is shown in FIG. Figure 2 In the middle, the U-shaped frame 205 is rotated to set the threaded sleeve 206 at the lower end, as shown in FIG. Figure 2As shown, a main transmission gear 207 is fixed on the threaded sleeve 206. When the threaded sleeve 206 rotates, it drives the main transmission gear 207 to rotate. The axis of the main transmission gear 207 is set to be hollow, which is convenient for the cable 103 to extend and pass through. The main transmission gear 207 is meshed with the auxiliary transmission gear 210. When the main transmission gear 207 rotates, it drives the auxiliary transmission gear 210 to rotate. The auxiliary transmission gear 210 plays a transmission role. The auxiliary transmission gear 210 is rotatably mounted on the U-shaped frame 205. The auxiliary transmission gear A driving bevel gear 211 is coaxially fixed on the surface of 210. The driving bevel gear 211 is meshed with the driven bevel gear 212. The driven bevel gear 212 is rotatably mounted on the U-shaped frame 205. The axial direction of the driven bevel gear 212 is perpendicular to the axial direction of the driving bevel gear 211. By setting the driving bevel gear 211 and the driven bevel gear 212, the transmission direction is changed. When the secondary transmission gear 210 drives the driving bevel gear 211 to rotate, the driven bevel gear 212 will rotate at the same time under the action of the driving bevel gear 211.

[0039] The two sides of the driven bevel gear 212 are respectively coaxially fixedly connected to one end of a transmission connecting rod 2121. There are two transmission connecting rods 2121. The other end of each transmission connecting rod 2121 extends out of the U-shaped frame 205 and is rotatably connected to the U-shaped frame 205. One end of each transmission connecting rod 2121 extending out of the U-shaped frame 205 is coaxially fixedly connected to the rotating gear 2122. A total of two rotating gears 2122 are provided. The transmission connecting rod 2121 plays the role of installing the driven bevel gear 212 and driving the rotating gear 2122 to rotate. The two rotating gears 2122 are respectively connected to a rack 213 (shown in FIG. Figure 1 The lower end of the auxiliary mounting frame 202 is fixed with two slide rails 214. The distance between the two slide rails 214 is equal to the distance between the two racks 213. A rack 213 is slidably mounted in each slide rail 214. The rack 213 can slide up and down along the slide rail 214. When the rotating gear 2122 rotates, it drives the rack 213 to move up and down in the slide rail 214 (shown in FIG. Figure 1 ), a limit block is set in the slide rail 214, which is used to limit the maximum moving distance of the rack 213 to prevent the rack 213 from being separated from the slide rail 214.

[0040] A hollow sleeve 204 is fixedly provided on the auxiliary mounting frame 202. The hollow sleeve 204 is provided above the threaded sleeve 206, and the hollow sleeve 204 is coaxially arranged with the threaded sleeve 206. The inner surface of the hollow sleeve 204 is in contact with the surface of the cable 103. The hollow sleeve 204 is used to pass through the cable 103 and install the limiting frame 2041. The lower end of the hollow sleeve 204 is rotatably connected to the upper surface of the main transmission gear 207. Since the hollow sleeve 204 is rotatably connected to the main transmission gear 207 and the hollow sleeve 204 is fixedly provided on the auxiliary mounting frame 202, the hollow sleeve 204 will not rotate when the main transmission gear 207 rotates. The upper end of the hollow sleeve 204 is fixedly connected to the limiting frame 2041. Figure 3 As shown, in order to prevent the cable 103 from rotating when descending, a protrusion is provided on the inner surface of the limit frame 2041, and a corresponding protrusion is provided on the outer surface of the cable 103. The protrusion on the surface of the cable 103 is provided between two adjacent protrusions of the limit frame 2041. The protrusion on the surface of the cable 103 is in contact and connected with the protrusion on the inner surface of the limit frame 2041. The rotational movement of the cable 103 is limited by the protrusion on the inner surface of the limit frame 2041 to prevent the cable 103 from rotating when extending into the water well. The cable 103 is released from the cable frame 104 and passes through the fixed pulley 105, and then extends into the limit frame 2041, the hollow sleeve 204, the main transmission gear 207 and the threaded sleeve 206 from top to bottom.

[0041] The cable 103 extends from top to bottom into the threaded sleeve 206 and is connected to the threaded rod 208 (shown in FIG. Figure 2 The threaded rod 208 can be threadedly connected to the threaded sleeve 206. When the threaded rod 208 rises or falls, it drives the threaded sleeve 206 to rotate. The lower end of the threaded rod 208 is connected to the collector 215 (shown in FIG. Figure 1 The collector 215 is used to collect groundwater. The lower end surface of the collector 215 is provided with a first counterweight 216 (shown in FIG. Figure 7 In the figure, the mass of the first counterweight 216 is relatively large. When the drive motor 107 is turned on and under the action of the gravity of the first counterweight 216, the first counterweight 216 will pull the threaded rod 208 downward through the collector 215 and drive the threaded sleeve 206 to rotate. Figure 2 As shown, the lower end of the threaded sleeve 206 is coaxially fixedly connected to the limit plate 209, and the limit plate 209 is hollow cone-shaped. The threaded rod 208 can pass through the limit plate 209 and engage with the threaded sleeve 206. Figure 1As shown, a conical surface corresponding to the limit plate 209 is provided at the upper end of the collector 215, and the upper end surface of the collector 215 can be in contact and connected with the inner wall of the limit plate 209. After the collector 215 rises until its upper end surface contacts the inner wall of the limit plate 209, the collector 215 reaches its highest limit position, that is, the limit plate 209 limits the collector 215 to the highest limit position to which it can rise, preventing the collector 215 from contacting the threaded sleeve 206, thereby causing damage to the components.

[0042] When the collector 215 is placed in the water well, the combined mass of the first counterweight 216 and the collector 215 is large. Therefore, when the collector 215 descends, the collector 215 drives the threaded rod 208 to move downward. Since the threaded rod 208 is meshed with the threaded sleeve 206, when the threaded rod 208 descends, the threaded sleeve 206 rotates on the U-shaped frame 205, and the threaded sleeve 206 drives the main transmission gear 207 thereon to rotate at the same time. The main transmission gear 207 drives the auxiliary transmission gear 210 The driving bevel gear 211 coaxially arranged on the lower surface of the secondary transmission gear 210 rotates and drives the driven bevel gear 212 to rotate. The driven bevel gear 212 rotates and drives the rotating gear 2122 to rotate through the transmission connecting rod 2121. The rotating gear 2122 is meshed with the rack 213, so the rack 213 slides downward in the slide rail 214 until the threaded rod 208 is completely disengaged from the threaded sleeve 206, and the threaded sleeve 206 loses kinetic energy input and stops rotating. During this period, the cable 103 does not rotate under the action of the limit frame 2041. Therefore, it does not cause the threaded rod 208 connected to the bottom of the cable 103 to rotate during the ascent or descent process, thereby preventing the threaded rod 208 from rotating and affecting the driving effect of the threaded rod 208 on the threaded sleeve 206.

[0043] like Figure 1 As shown, a fixed ring 301 is fixed on the main mounting frame 201. The position of the fixed ring 301 is fixed relative to the frame 1. Its main function is to install the movable ring 302. The fixed ring 301 is located below the U-shaped frame 205. The movable ring 302 is installed by sliding up and down inside the fixed ring 301. The upper end of the movable ring 302 is fixedly connected to the lower end of the rack 213. When the rack 213 descends, the movable ring 302 moves downward inside the fixed ring 301. Figure 4 、 5As shown, a threaded ring 303 is coaxially rotatably provided on the outer surface of the movable ring 302, and the movable ring 302 is fixedly connected to the threaded ring 303 along the axial direction, that is, the up and down movement of the movable ring 302 can drive the threaded ring 303 to rise or fall. A thread that can be threadedly connected to the threaded ring 303 is provided on the inner wall surface of the fixed ring 301. When the threaded ring 303 is screwed into the inner wall thread of the fixed ring 301, the threaded ring 303 will rotate when it rises or falls. An end gear 304 is fixedly provided at the lower end of the threaded ring 303. The end gear 304 is coaxially provided with the movable ring 302. The end gear 304 is meshed with a driven gear 305. The driven gear 305 is rotatably provided on the surface of the movable ring 302. There are six driven gears 305, and they are arranged in a circle with the threaded ring 301. 03 is arranged in a circular array with the axis of the movable ring 303 as the center. When the threaded ring 303 rotates, it drives the end gear 304 to rotate. When the end gear 304 rotates, it drives the driven gear 305 to rotate. Each driven gear 305 is coaxially fixedly connected to one end of the active screw sleeve 306 on the side away from the movable ring 302. The active screw sleeve 306 has an internal thread connected to the driven screw 307. The driven screw 307 is installed on the movable ring 302 along the radial direction of the movable ring 302. When the active screw sleeve 306 rotates, the driven screw 307 will extend.

[0044] One end of each driven screw 307 is fixedly connected to the mounting base 308 (shown in FIG. Figure 5 ), the mounting base 308 is used to install the longitudinal sliding plate rail 309, and the longitudinal sliding plate rail 309 is fixedly provided at one end of the mounting base 308, and a connecting rod 310 is slidably installed in the longitudinal sliding plate rail 309, and the connecting rod 310 can slide in the longitudinal sliding plate rail 309 along its extension direction, and one end of the connecting rod 310 is fixedly connected to the vibration-damping telescopic rod 311 and one end of the return spring 312, and the other end of the vibration-damping telescopic rod 311 and the return spring 312 is fixedly connected to the inner wall of the longitudinal sliding plate rail 309, and the return spring 312 is sleeved on the surface of the vibration-damping telescopic rod 311, and the other end of the connecting rod 310 is fixedly connected to the surface of one side of the longitudinal sliding plate 313, and the surface of the longitudinal sliding plate 313 away from the connecting rod 310 is longitudinally slidably installed with a contact plate 3131, and the side of the contact plate 3131 away from the longitudinal sliding plate 313 can be in contact and connected with the wall of the groundwater well.

[0045] When the axis of the fixed ring 301 deviates greatly from the axis of the well, one or more (less than 6) of the six contact plates 3131 first come into contact with the well wall. The resistance of the well wall to the contact plate 3131 is transmitted through the longitudinal sliding plate 313 and fed back to the vibration-damping telescopic rod 311 and the reset spring 312. After the contact plate 3131 comes into contact with the well wall, the driven screw 307 is still in the state of extending from the active screw sleeve 306, so the vibration-damping telescopic rod 311 and the reset spring 312 are extended. At this time, the movable ring 302 continues to move downward, and drives the longitudinal sliding plate 313 on the contact plate 3131 that has been in contact with the well wall to move in the contact plate. As the contact plates 3131 continue to slide downward, the provision of the vibration-damping telescopic rod 311, return spring 312, and longitudinal sliding plate 313 ensures that when some of the contact plates 3131 first contact the well wall, the driven gear 305 can continue to rotate without becoming stuck. This ensures that the movable ring 302 and the threaded ring 303 thereon can continue to descend, the face gear 304, the driven gear 305, and the active screw sleeve 306 can continue to rotate, and the driven screw rod 307 can continue to extend from the active screw sleeve 306, thereby ensuring that the remaining contact plates 3131 that have not yet contacted the well wall can continue to extend. The provision of the vibration-damping telescopic rod 311, return spring 312, and longitudinal sliding plate 313 ensures that even when there is a large deviation between the axis of the fixed ring 301 and the axis of the well, all six contact plates 3131 can still contact and be supported on the well wall.

[0046] When the threaded sleeve 206 rotates and drives the rack 213 to descend, the rack 213 drives the movable ring 302 to slide downward in the fixed ring 301. After the movable ring 302 descends a certain distance, the threaded ring 303 on the surface of the movable ring 302 is connected with the thread of the inner wall of the fixed ring 301. At this time, when the movable ring 302 descends, the threaded ring 303 will rotate at the same time. When the threaded ring 303 rotates, the end gear 304 at its lower end rotates around the axis of the movable ring 302. When the end gear 304 rotates, it drives the driven gear 305 to rotate. The main gear 303 on the surface of the driven gear 305 is connected with the main gear 304 on the surface of the driven gear 305. The movable screw sleeve 306 rotates in the same direction, the driven screw 307 in the active screw sleeve 306 extends out, and pushes the mounting base 308 to move away from the movable ring 302. When the mounting base 308 moves, the longitudinal sliding plate rail 309, the connecting rod 310 and the longitudinal sliding plate 313 move in the same direction, and push the contact plate 3131 to move in the same direction. When the contact plate 3131 contacts the well wall, the contact plate 3131 is subjected to the resistance of the well wall and feedback is sent to the vibration-damping telescopic rod 311 and the return spring 312, and the vibration-damping telescopic rod 311 and the return spring 312 are extended.

[0047] To achieve groundwater sampling at different depths, e.g. Figure 6-8As shown, a pumping motor 401 is fixedly installed in the housing of the collector 215. The pumping motor 401 is controlled by a PLC controller (not shown in the drawings). The PLC controller adopts an existing model of PLC controller. The outer shell of the collector 215 is a hollow cylinder. The pumping motor 401 is used to provide kinetic energy input. The output end of the pumping motor 401 is fixedly connected to one end of a driving connecting rod 402. The axial direction (i.e., the length direction) of the driving connecting rod 402 is perpendicular to the axial direction of the output end of the pumping motor 401. The other end of the driving connecting rod 402 is fixedly connected to an active incomplete gear 403, and the active incomplete gear 403 can be meshed with the upper gear 404. The upper gear 404 is rotatably arranged in the outer shell of the collector 215. There are four upper gears 404 in total, and they are arranged in a circular array with the axis of the output end of the pumping motor 401 as the center. A driven incomplete gear 405 is coaxially fixed on the lower surface of each upper gear 404. The driven incomplete gear 405 is meshed with the inner teeth of the ring gear 406. The inner teeth of the ring gear 406 are arranged on the inner side of two parallel straight edges of the ring gear 406. The ring gear 406 is slidably installed inside the collector 215. A slide groove corresponding to the ring gear 406 is fixedly set in the collector 215 (the slide groove is not shown in the accompanying drawings), and the ring gear 406 can slide back and forth along the radial direction of the outer shell of the collector 215. When the driven incomplete gear 405 rotates to engage with the internal teeth on one straight side of the ring gear 406, the rotation of the driven incomplete gear 405 drives the ring gear 406 to slide toward the direction close to the water pumping motor 401. When the driven incomplete gear 405 rotates to engage with the internal teeth on the other straight side of the ring gear 406, the rotation of the driven incomplete gear 405 drives the ring gear 406 to slide toward the direction away from the water pumping motor 401, thereby realizing the reciprocating sliding of the ring gear 406.

[0048] One end of the gear ring 406 away from the pumping motor 401 is fixedly connected to one end of the piston rod 408. The piston rod 408 is slidably installed in the pumping pipe 409. The pumping pipe 409 is fixedly set in the collector 215. Groundwater can be extracted through the pumping pipe 409.

[0049] One end of the water extraction pipe 409 is fixedly provided with one end of a first one-way valve 410. The function of the first one-way valve 410 is an inlet-only state, that is, groundwater in the well can only enter the water extraction pipe 409 through the first one-way valve 410, and cannot enter the water well from the water extraction pipe 409 through the first one-way valve 410. The other end of the first one-way valve 410 is fixedly connected to the water suction port 411, which extends out of the outer shell of the collector 215. A sealing strip is provided at the connection between the water suction port 411 and the outer shell of the collector 215 to prevent groundwater from entering the inner shell of the collector 215 through the connection between the water suction port 411 and the outer shell. A second one-way valve 412 (shown in FIG. 4 ) is fixedly connected to the surface of the water extraction pipe 409. Figure 8In the figure, the water extraction pipe 409 is connected to the second one-way valve 412, which is fixedly connected to one end of the water delivery pipe 413. The other end of the water delivery pipe 413 is fixedly connected to the water inlet of the water tank 414, which is fixedly mounted within the collector 215. The second one-way valve 412 is in an outflow-only state, meaning that groundwater drawn into the water extraction pipe 409 can only flow through the second one-way valve 412 and the water delivery pipe 413 into the water tank 414 and cannot flow back from the water tank 414 through the water delivery pipe 413 and the second one-way valve 412 into the water extraction pipe 409.

[0050] When the collector 215 enters the groundwater well under the action of the first counterweight 216, when it is necessary to sample the groundwater in the well in layers, the PLC controller controls the pumping motor 401 to start working, and the output end of the pumping motor 401 starts to rotate and drives the active incomplete gear 403 to rotate around the axis of the output end of the pumping motor 401 through the driving connecting rod 402. First, the active incomplete gear 403 meshes with an upper gear 404, and the active incomplete gear 403 drives the upper gear 404 to rotate. As the upper gear 404 rotates one circle, it drives the driven incomplete gear 405 fixed coaxially therewith to rotate one circle synchronously. During the first half of the rotation of the driven incomplete gear 405, the driven incomplete gear 405 first meshes with the internal teeth on a straight edge of the ring gear 406. The rotation of the driven incomplete gear 405 drives the ring gear 406 to slide toward the pumping motor 401, and the piston rod 408 on the ring gear 406 moves in the same direction. The movement of the piston rod 408 creates a negative pressure state in the pumping pipe 409, thereby pumping the underground water. Water is pumped into the pumping pipe 409 through the first one-way valve 410, completing the pumping process of the pumping pipe 409. The driven incomplete gear 405 continues to rotate. During the second half of its rotation, the driven incomplete gear 405 meshes with the inner teeth on the other straight side of the ring gear 406. The rotation of the driven incomplete gear 405 drives the ring gear 406 to move in the opposite direction, thereby sliding away from the pumping motor 401. The piston rod 408 moves in the same direction, and the piston rod 408 pushes the groundwater sample in the pumping pipe 409 through the second one-way valve 412. And the water pipe 413 enters the water tank 414. At this time, the active incomplete gear 403 loses engagement with an upper gear 404, completing the collection of groundwater samples at one depth. The length of the cable 103 continues to be lengthened. Under the action of the gravity of the first counterweight block 216, the collector 215 continues to descend. When it descends to the next depth, the pumping motor 401 drives the active incomplete gear 403 to engage with the next upper gear 404, repeating the previous layer sampling process, and so on, to complete the multi-layer sampling of groundwater samples.

[0051] Working principle:

[0052] First, the operator pushes the frame 1 to the water well by operating the handle 102 and places the fixing ring 301 above the water well. Then, the switch of the drive motor 107 is turned on to rotate the drive motor 107 forward, the cable rack 104 rotates forward, and the cable 103 on the cable rack 104 is released and extended on the cable rack 104.

[0053] At this time, the first counterweight block 216 and the collector 215 will move vertically downward under the action of gravity. Therefore, when the collector 215 descends, the collector 215 drives the threaded rod 208 to move downward. Since the threaded rod 208 is meshed with the threaded sleeve 206, when the threaded rod 208 descends, the threaded sleeve 206 will rotate on the U-shaped frame 205, and the threaded sleeve 206 drives the main transmission gear 207 thereon to rotate at the same time. The main transmission gear 207 will drive the secondary transmission gear 210 to rotate. The active bevel gear 211 coaxially arranged on the lower surface of the secondary transmission gear 210 rotates and drives the driven bevel gear 212 to rotate. While the driven bevel gear 212 rotates, it drives the rotating gear 2122 to rotate through the transmission connecting rod 2121. The rotating gear 2122 is meshed with the rack 213, so the rack 213 will slide downward in the slide rail 214 until the threaded rod 208 is completely disengaged from the threaded sleeve 206, and the threaded sleeve 206 loses kinetic energy input and stops rotating. During this period, the cable 103 does not rotate under the action of the limit frame 2041, so the threaded rod 208 connected below the cable 103 does not rotate during the rising or falling process to affect the driving effect of the threaded rod 208 on the threaded sleeve 206.

[0054] At the same time, the cable 103 does not rotate under the action of the limit frame 2041, and when the threaded sleeve 206 rotates to drive the rack 213 to descend, the rack 213 drives the movable ring 302 to slide downward in the fixed ring 301. After the movable ring 302 descends a certain distance, the threaded ring 303 on the surface of the movable ring 302 is connected with the thread of the inner wall of the fixed ring 301. At this time, when the movable ring 302 descends, the threaded ring 303 will rotate at the same time. When the threaded ring 303 rotates, the end gear 304 at its lower end rotates around the axis of the movable ring 302. When the end gear 304 rotates, it drives the driven gear 302 to rotate. 05 rotates, the active screw sleeve 306 on the surface of the driven gear 305 rotates in the same direction, the driven screw 307 in the active screw sleeve 306 extends out, and pushes the mounting base 308 to move away from the movable ring 302. When the mounting base 308 moves, the longitudinal sliding plate rail 309, the connecting rod 310 and the longitudinal sliding plate 313 move in the same direction, and push the contact plate 3131 to move in the same direction. When the contact plate 3131 contacts the well wall, the contact plate 3131 is subjected to the resistance of the well wall and feedback is sent to the vibration-damping telescopic rod 311 and the return spring 312, and the vibration-damping telescopic rod 311 and the return spring 312 are extended.

[0055] Until the threaded rod 208 is completely separated from the threaded sleeve 206, the threaded sleeve 206 loses kinetic energy input and stops rotating, the movable ring 302 stops rotating, and the driven screw rod 307 stops extending.

[0056] The cable rack 104 continues to rotate, and the collector 215 enters the groundwater well under the action of the first counterweight block 216. When it is necessary to sample the groundwater in the well in layers, the PLC controller controls the pumping motor 401 to start working. The output end of the pumping motor 401 starts to rotate and drives the active incomplete gear 403 to rotate around the axis of the output end of the pumping motor 401 through the driving connecting rod 402. First, the active incomplete gear 403 is meshed with an upper gear 404, and the active incomplete gear 403 drives the upper gear 404 to rotate. The upper gear 404 rotates one circle, and the upper gear 404 rotates one circle, which drives the driven incomplete gear 405 fixed coaxially with it to rotate one circle synchronously. During the rotation of the driven incomplete gear 405 in the first half circle, the driven incomplete gear 405 first meshes with the internal teeth on a straight edge of the ring gear 406. The rotation of the driven incomplete gear 405 drives the ring gear 406 to slide toward the pumping motor 401, and the piston rod 408 on the ring gear 406 moves in the same direction. The movement of the piston rod 408 creates a negative pressure state in the pumping pipe 409. Then, the groundwater is pumped into the pumping pipe 409 through the first one-way valve 410, completing the pumping process of the pumping pipe 409. The driven incomplete gear 405 continues to rotate. During the second half of its rotation, the driven incomplete gear 405 engages with the inner teeth on the other straight edge of the ring gear 406. The rotation of the driven incomplete gear 405 drives the ring gear 406 to move in the opposite direction, thereby sliding away from the pumping motor 401. The piston rod 408 moves in the same direction, and the piston rod 408 pushes the groundwater sample in the pumping pipe 409 through the second one-way valve 412 and the water pipe 413 enter the water tank 414. At this time, the active incomplete gear 403 loses engagement with an upper gear 404, completing the collection of groundwater samples at one depth. The length of the cable 103 continues to be lengthened. Under the action of the gravity of the first counterweight block 216, the collector 215 continues to descend. When it descends to the next depth, the pumping motor 401 drives the active incomplete gear 403 to engage with the next upper gear 404, repeating the previous layer sampling process, and so on, completing multi-layer sampling of groundwater samples.

[0057] After the collection of groundwater samples is completed, the driving motor 107 rotates in the reverse direction, the cable frame 104 rotates in the reverse direction, the cable 103 on the cable frame 104 is slowly wound around the cable frame 104, the length of the cable 103 in the well becomes shorter, the cable 103 gradually pulls the collector 215 out of the water, the threaded rod 208 extends into the threaded sleeve 206, after the threaded rod 208 extends into the threaded sleeve 206, the threaded rod 208 moves upward under the action of the cable 103, the threaded sleeve 206 rotates in the reverse direction, the main transmission gear 207 on the threaded sleeve 206 rotates in the reverse direction, the sub-transmission gear 210 rotates in the reverse direction, and the active bevel gear 211 drives the sub-transmission gear 211 to rotate in the reverse direction. The movable bevel gear 212 rotates in the opposite direction, thereby realizing the reverse rotation of the transmission rotating gear 2122. The rack 213 moves upward under the action of the transmission rotating gear 2122. The rack 213 pulls the movable ring 302 to move upward in the fixed ring 301. The movable ring 302 drives the threaded ring 303 to move upward. The threaded ring 303 rotates in the opposite direction, and the end gear 304 and the driven gear 305 rotate in the opposite direction, thereby realizing the retraction of the driven screw 307 into the active screw sleeve 306. The contact plate 3131 loses contact with the well wall. As the rack 213 continues to rise, the movable ring 302 is pulled out of the well to complete the sampling of groundwater samples.

[0058] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A measurement and acquisition system for a sandy lake-groundwater composite system, comprising a vehicle frame (1), characterized in that: A threaded sleeve (206) is rotatably mounted on the vehicle frame (1); a main transmission gear (207) meshing with a secondary transmission gear (210) is fixed on the threaded sleeve (206); a driving bevel gear (211) meshing with a driven bevel gear (212) is coaxially fixed to the secondary transmission gear (210); a rotating gear (2122) meshing with a rack (213) is fixed on the driven bevel gear (212); the threaded sleeve (206) can be threadedly connected to a threaded rod (208); a cable (103) is fixed above the threaded rod (208); A fixed ring (301) having a movable ring (302) slidably arranged therein is fixed on the vehicle frame (1). The movable ring (302) is fixedly connected to the rack (213). A threaded ring (303) capable of being threadedly connected to the fixed ring (301) is rotatably arranged on its surface. An end gear (304) is fixed to the lower end of the threaded ring (303). The end gear (304) is meshed with a driven gear (305) coaxially fixed with a driving screw sleeve (306). The driving screw sleeve (306) is internally threadedly connected to a driven screw rod (307) having a contact plate (3131) mounted on one end. One end of the driven screw rod (307) is fixedly connected to the mounting base (308), and one end of the mounting base (308) is fixedly provided with a longitudinal sliding plate rail (309), and one end of the connecting rod (310) is slidably mounted in the longitudinal sliding plate rail (309), and one end of the connecting rod (310) is fixedly connected to one end of the vibration-damping telescopic rod (311) and the return spring (312), and the other ends of the vibration-damping telescopic rod (311) and the return spring (312) are fixedly connected to the inner wall of the longitudinal sliding plate rail (309), and the return spring (312) is sleeved on the surface of the vibration-damping telescopic rod (311), and the other side of the longitudinal sliding plate rail (309) is slidably connected to the contact plate (3131), and the other end of the connecting rod (310) is fixedly connected to one side of the longitudinal sliding plate (313), and the contact plate (3131) is slidably connected to the longitudinal sliding plate (313), and the contact plate (3131) can be in contact with the well wall; A collector (215) is fixed below the threaded rod (208), and a pumping motor (401) is fixed inside the collector (215) for driving an active incomplete gear (403) to rotate. The active incomplete gear (403) can mesh with an upper gear (404) of a coaxially fixed driven incomplete gear (405). The driven incomplete gear (405) meshes with a ring gear (406) of which a piston rod (408) is fixed at one end. The piston rod (408) is slidably installed in a water pumping pipe (409). When the driven incomplete gear (405) rotates, the ring gear (406) is driven to move. One end of the water extraction pipe (409) is fixedly provided with one end of a first one-way valve (410), and the other end of the first one-way valve (410) is fixedly connected to a water suction port (411). The water suction port (411) extends out of the collector (215). The surface of the water extraction pipe (409) is fixedly connected to a second one-way valve (412) and communicates with the second one-way valve (412). The second one-way valve (412) is fixedly connected to one end of a water delivery pipe (413), and the other end of the water delivery pipe (413) is fixedly connected to a water inlet of a water tank (414). The water tank (414) is fixedly provided in the collector (215).

2. The measurement and acquisition system for a sandy lake-groundwater composite system according to claim 1, characterized in that: A cable frame (104) is rotatably provided on the vehicle frame (1), one end of a cable (103) is fixedly connected to the cable frame (104), a main mounting frame (201) for fixing a secondary mounting frame (202) is fixed on the vehicle frame (1), a fixed pulley (105) is rotatably provided on the upper end of the secondary mounting frame (202), and a surface of the fixed pulley (105) is in contact with and connected to a surface of the cable (103).

3. The measurement and acquisition system for a sandy lake-groundwater composite system according to claim 2, characterized in that: A hollow sleeve (204) is fixedly provided on the auxiliary mounting frame (202), the inner surface of the hollow sleeve (204) is in contact with the surface of the cable (103), the upper end of the hollow sleeve (204) is fixedly connected to the limit frame (2041), the inner surface of the limit frame (2041) is provided with a protrusion, and the surface of the cable (103) is provided with a corresponding protrusion, and the lower end of the hollow sleeve (204) is rotatably connected to the upper surface of the main transmission gear (207).

4. The measurement and acquisition system for a sandy lake-groundwater composite system according to claim 2, characterized in that: A slide rail (214) is fixedly provided at the lower end of the auxiliary mounting frame (202), and the rack (213) is slidably mounted in the slide rail (214). The rack (213) can slide up and down along the slide rail (214).

5. The measurement and acquisition system for a sandy lake-groundwater composite system according to claim 4 is characterized by: A limit block is provided in the slide rail (214) for limiting the maximum moving distance of the rack (213) to prevent the rack (213) from being separated from the slide rail (214).

6. The measurement and acquisition system for a sandy lake-groundwater composite system according to claim 1, characterized in that: The number of the driven gears (305) is six, and they are arranged in a circular array with the axis of the threaded ring (303) as the center.

7. The measurement and acquisition system for a sandy lake-groundwater composite system according to claim 1, characterized in that: The output end of the pumping motor (401) is fixedly connected to one end of a driving connecting rod (402), the axial direction of the driving connecting rod (402) is perpendicular to the axial direction of the output end of the pumping motor (401), and the other end of the driving connecting rod (402) is fixedly connected to the active incomplete gear (403).

8. The measurement and acquisition system for a sandy lake-groundwater composite system according to claim 1, characterized in that: The number of the upper gear (404), the driven incomplete gear (405) and the ring gear (406) is four, and they are arranged in a circular array with the axis of the output end of the pumping motor (401) as the center.

9. The measurement and acquisition system for a sandy lake-groundwater composite system according to claim 1, characterized in that: The lower end of the threaded sleeve (206) is coaxially fixedly connected to the limiting plate (209), the limiting plate (209) is hollow conical, the threaded rod (208) can pass through the limiting plate (209) and be engaged with the threaded sleeve (206), the upper end of the collector (215) is provided with a conical surface corresponding to the limiting plate (209), and the upper end surface of the collector (215) can be in contact with the inner wall of the limiting plate (209).

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