Water quality sampling device for freezing period of lake in cold and arid region

Abstract

The invention discloses a water quality sampling device for the freezing period of a lake in a cold and arid region, which is convenient to walk on an ice surface through the movement of a crawler-type robot chassis, and is capable of sequentially replacing tools for drilling, reaming and sampling for a main shaft assembly through a tool changing mechanical arm, so that the main shaft assembly can sequentially complete the drilling, reaming and sampling work, and the working efficiency is improved. Under the condition of the same trepanning input power, a larger hole can be conveniently formed in an ice layer through drilling and reaming in sequence, subsequent sampling work is facilitated, sample storage work can be completed through cooperation of the main shaft assembly, the connecting hook, the push-pull mechanism and the rotating disc, and the working efficiency is improved. Through cooperation of the main shaft assembly, the tool changing mechanical arm, the push-pull mechanism and the rotating disc, trepanning and sampling work can be automatically completed, a water pump and a water pipe do not need to be used, the defect that the water pump and the water pipe are prone to freezing and blocking in the freezing period is overcome, the labor intensity of detection personnel is reduced, the automation level is improved, and the safety of the detection personnel is improved.

Description

Technical Field

[0001] The invention relates to the technical field of water quality detection, and in particular to a water quality sampling device used in lakes in cold and arid areas during the ice-covered period. Background Art

[0002] Water quality sampling of lakes in cold and arid areas is a key step in assessing the health of water bodies in these areas and monitoring the types and concentrations of pollutants and their changing trends. However, lakes in cold and arid areas have an ice period of 5-7 months. During the ice period, a thick ice cover gradually forms on the lake surface as the temperature continues to drop, which greatly hinders testers from directly obtaining lake water samples.

[0003] In the prior art, in order to collect lake water samples under the ice, inspectors need to first use tools to drill through the ice, and then use water pumps and water pipes to extract the lake water under the ice. During the ice period, the water pump pipes are very likely to freeze and become clogged. Once the water pumps and water pipes are clogged, they need to be repeatedly disassembled, cleaned and debugged, which has the disadvantages of high labor intensity and complicated sampling work. In addition, when working on the cold and frozen lake surface, inspectors face safety hazards such as slipping and falling.

[0004] Therefore, it is necessary to design a device that can automatically complete water quality sampling during the ice-covered period of lakes in cold and arid areas without the need to use water pumps and water pipes. Summary of the invention

[0005] The object of the present invention is to provide a water quality sampling device for lakes in cold and arid areas during the ice-covered period, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: comprising a crawler robot chassis, wherein a frame is fixed in the middle of the crawler robot chassis.

[0007] A tool outlet is provided under the frame, a spindle assembly is provided in the frame for lifting, and a tool changing mechanical arm is provided in the frame for rotating. The tool changing mechanical arm can clamp three kinds of tools, namely, a guide drill, a reamer and a connecting hook, at the same time; A turntable is rotatably arranged on the frame at one side of the tool outlet, a plurality of sliding slots are arranged on the turntable, a bracket is slidably arranged in each sliding slot, a sampling bottle is arranged in each bracket, and a push-pull mechanism is arranged on the frame; An upper pressing plate is fixed at the lower end of the connecting hook, a V-shaped piece is fixed under the upper pressing plate, and an interface is provided between the upper pressing plate and the V-shaped piece; The sampling bottle includes a bottle body, which can be vertically slidably arranged in a bracket. A rotating handle is fixed on the bottle body, and the rotating handle can enter the V-shaped groove of the V-shaped piece through the interface of the connecting hook. The rotating handle can rotate in the V-shaped groove of the V-shaped piece. A tilting counterweight is fixed at the bottom of the bottle body, and the tilting counterweight can keep the bottle body tilted in a free state.

[0008] Preferably, a protective sheet is rotatably provided on the upper pressure plate at the interface, a torsion spring is provided between the protective sheet and the upper pressure plate, one end of the torsion spring is fixed on the protective sheet, and the other end is fixed on the upper pressure plate, and the protective sheet can close the interface.

[0009] Preferably, the sampling bottle also includes a bottle cap, the bottle body opening is upward, the bottle cap is rotatably arranged on one side of the bottle cap, a balancing weight is fixed on the side of the bottle cap, the balancing weight can balance the weight of the bottle cap, and a horizontal weight is fixed under the bottle cap, the horizontal weight can keep the bottle cap level in a free state.

[0010] Preferably, the push-pull mechanism includes a push-pull arm and a return plate. The return plate is slidably arranged on the frame. When the return plate is extended to the tool outlet, the inclined sampling bottle can be restored to a vertical state. The push-pull arm is slidably arranged on the frame at the center of the turntable. When the push-pull arm is extended, the bracket can be pushed above the tool outlet. When the push-pull arm is retracted, the bracket can be pulled above the sliding groove. The push-pull arm and the return plate can move simultaneously.

[0011] Preferably, a push-pull rack is fixed on the push-pull arm, the push-pull rack is meshedly connected with a push-pull gear, the push-pull gear is driven by a push-pull motor, and the push-pull motor is fixed on the frame; The tilting counterweight is fixed on the side of the sampling bottle facing the center of the turntable, and the sampling bottle tilts toward the outside of the turntable in a free state; When the correcting plate is extended, it slides toward the center of the turntable, and a correcting rack is fixed on the correcting plate, which is meshed with a correcting gear. The correcting gear is rotatably arranged on the frame, and the correcting gear is meshed with an A gear. The A gear is rotatably arranged on the frame, and the A gear is meshed with a B gear. The B gear is rotatably arranged on the frame, and the B gear is coaxially fixed with a correcting output bevel gear. The correcting output bevel gear is meshed with a correcting input bevel gear. The correcting input bevel gear is rotatably arranged on the frame, and the correcting input bevel gear is coaxially fixed with a push-pull output bevel gear. The push-pull output bevel gear is meshed with a push-pull input bevel gear. The push-pull bevel input gear is rotatably arranged on the frame, and the push-pull input bevel gear is coaxially fixed on the push-pull gear.

[0012] Preferably, a lock tongue and a cam plate are provided in the push-pull arm for lifting and lowering, the retracted position of the lock tongue is in the push-pull arm, the extended position of the lock tongue is below the push-pull arm, the extended position of the lock tongue is the initial position of the lock tongue, the initial position of the cam plate is outside the push-pull arm, the lock tongue and the cam plate are fixed to each other, and the cam plate can drive the lock tongue to retract into the push-pull arm when it rises, the lock tongue is at one end of the push-pull arm close to the tool outlet, and the cam plate is in the middle of the push-pull arm; The cam plate is provided with a cam groove, which includes a left transition groove, a left oblique groove, a retracting groove, a right oblique groove and a right transition groove, the left transition groove, the left oblique groove, the retracting groove, the right oblique groove and the right transition groove are sequentially connected, and the left end of the left transition groove and the right end of the right transition groove are open; A control bracket is fixed on the frame at the center of the turntable, and a control bracket is fixed on the frame at the center of the turntable. A roller is rotatably arranged on the control bracket, and when the push-pull arm slides, the cam groove of the cam plate can be driven to contact the roller. When the roller is in the left transition groove, the cam plate is in the initial position. When the roller is in the left inclined groove, the cam plate is between the initial position and the upper limit position. When the roller is in the retraction groove, the cam plate is in the upper limit position and drives the lock tongue to retract into the push-pull arm. When the roller is in the right inclined groove, the cam plate is again between the initial position and the upper limit position. When the roller is in the right transition groove, the cam plate is again in the initial position. A push plate is vertically fixed on the bracket, and the push plate can contact one end of the push-pull arm close to the tool outlet. A pull plate is horizontally fixed on the push plate, and a locking hole is opened on the pull plate, and a lock tongue can be inserted into the locking hole.

[0013] Preferably, one end of a telescopic rod is fixed on the turntable, and the other end of the telescopic rod is fixed on the bracket. A positioning notch is provided at the bottom of each bracket. A sleeve is fixed on the side of each sliding slot. The tail of a positioning pin is slidably arranged in the sleeve. A spring is provided between the positioning pin and the sleeve. One end of the spring is fixed on the sleeve, and the other end is fixed on the positioning pin. The spring keeps the positioning pin extending out of the sleeve in a free state. A positioning inclined surface is provided on the head of the positioning pin. When the bracket is above the sliding slot, the head of the positioning pin can be inserted into the positioning notch.

[0014] Preferably, the spindle assembly includes a lifting platform, a spindle seat is fixed on the lifting platform, a mechanical spindle is rotatably arranged in the spindle seat, the mechanical spindle is driven by a spindle motor through a belt, the spindle motor is fixed on the lifting platform, and a knife-beating cylinder is fixed on the spindle seat; The lifting platform is slidably arranged on a guide shaft, the guide shaft is fixed in the frame, a lead screw is threadedly connected to the lifting platform, the lead screw is rotatably arranged in the frame, the lead screw is driven by a lifting motor, and the lifting motor is fixed on the frame; A laser distance measuring sensor is fixed under the lifting platform, a baffle is fixed on the handle of the connecting hook, and when the laser distance measuring sensor is aligned with the baffle, the interface of the connecting hook faces the turntable.

[0015] Preferably, an ice thickness measuring assembly is provided in the frame.

[0016] Preferably, the ice thickness measuring assembly comprises an ice thickness gauge, which is fixed in a sheath, the sheath is lifted and lowered on a frame, one end of an electric push rod is fixed on the sheath, and the other end of the electric push rod is fixed in the frame.

[0017] Compared with the prior art, the beneficial effects of the present invention are: the crawler robot chassis moves, which makes it convenient to walk on the ice surface; the tool changing robot arm successively replaces the tools used for drilling, reaming and sampling for the spindle assembly, so that the spindle assembly can complete the drilling, reaming and sampling tasks in sequence; under the same hole opening input power, by drilling first and then reaming, it is convenient to open a larger hole in the ice layer, which is convenient for subsequent sampling work.

[0018] When sampling, the spindle assembly first installs the connecting hook, and then the push-pull mechanism pushes out the sampling bottle and the bracket, so that the sampling bottle is connected to the connecting hook. Then the spindle assembly drives the connecting hook to rise, and then drives the sampling bottle to rise, so that the sampling bottle is separated from the bracket. Then the push-pull mechanism pulls back the empty bracket, and then the spindle assembly drives the connecting hook and the sampling bottle to descend, so that the sampling bottle enters under the ice layer to complete the sampling work. After the sampling work is completed, the sample storage work can be completed through the cooperation of the spindle assembly, the connecting hook, the push-pull mechanism and the turntable. The cooperation of the spindle assembly, the tool changing robot arm, the push-pull mechanism and the turntable can automatically complete the work of opening holes and sampling, without the need to use water pumps and water pipes, avoiding the disadvantages of easy ice blockage of water pumps and water pipes during the ice period, reducing the labor intensity of the inspectors, improving the level of automation, and improving the safety of the inspectors; When the connecting hook is connected to the sampling bottle, the rotating handle of the sampling bottle first enters the V-shaped groove of the V-shaped plate, and then the main shaft assembly drives the connecting hook to rise, and then drives the sampling bottle to rise, so that the sampling bottle is separated from the bracket. After the sampling bottle is separated from the bracket, the bottle body is tilted under the action of the tilting counterweight. Since the bottle body enters under the ice layer in a tilted state to complete the sampling work, and returns to a vertical state after returning to the bracket, it can prevent the sample of the sampling bottle from overflowing, prevent the overflowed sample from spilling onto the moving parts, and prevent the spilled sample from freezing the moving parts, thereby causing the moving parts to fail. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is an axonometric view of the present invention; Figure 2 This is an axonometric view of the present invention, with the side wall of the frame removed, wherein the spindle assembly is in the upper limit position; Figure 3 It is an axonometric view of the internal structure of the frame of the present invention, wherein the spindle assembly is in the lower limit position; Figure 4 It is an axonometric view of the turntable and sampling bottle of the present invention; Figure 5 It is an axonometric view of the connecting hook of the present invention; Figure 6 It is a front view of the connecting hook of the present invention; Figure 7 For the present invention Figure 4 A local enlarged view of point A; Figure 8It is an axonometric diagram of the turntable, sampling bottle and push-pull mechanism of the present invention; Fig. 9 It is an axonometric view of the internal structure of the rack of the present invention, wherein the correction plate is restoring the tilted sampling bottle to a vertical state; Fig.10 It is an axonometric diagram of the push-pull mechanism of the present invention; Fig.11 For the present invention Fig.10 A partial enlarged view of point B; Fig.12 It is a cross-sectional view of the bracket of the present invention in the bottom direction; Fig.13 is an axonometric view of the spindle assembly of the present invention; Fig.14 A bottom view of the tool changing robot arm of the present invention; Fig.15 For the present invention Fig. 9 A partial enlarged view of point C.

[0020] In the figure: 101, crawler robot chassis, 102, frame, 103, tool outlet, 104, guide drill, 105, reamer, 106, guide shaft, 107, lead screw, 108, lifting motor, 200, ice thickness measuring assembly, 201, ice thickness gauge, 202, sheath, 203, electric push rod, 300, spindle assembly, 301, lifting platform, 302, spindle seat, 303, mechanical spindle, 304, spindle motor, 305 , belt, 306, knife cylinder, 307, laser distance sensor, 308, baffle, 401, turntable, 402, sliding groove, 403, bracket, 404, push plate, 405, pull plate, 406, locking hole, 407, telescopic rod, 408, positioning notch, 409, sleeve, 410, positioning pin, 411, intermediate gear, 412, indexing motor, 500, connecting hook, 501, connecting rod, 502, knife handle, 503, upper pressure plate , 504, V-shaped piece, 505, protective piece, 600, sampling bottle, 601, bottle body, 602, handle, 603, bottle cap, 604, balance weight, 605, horizontal weight, 700, push-pull mechanism, 701, push-pull arm, 702, return plate, 703, push-pull rack, 704, push-pull gear, 705, push-pull motor, 706, return rack, 707, return gear, 708, return output bevel gear, 709, return input Bevel gear, 710, push-pull output bevel gear, 711, push-pull input bevel gear, 712, lock tongue, 713, cam plate, 714, left transition groove, 715, left oblique groove, 716, retraction groove, 717, right oblique groove, 718, right transition groove, 719, control bracket, 720, roller, 721, A gear, 722, B gear, 800, tool changing robot arm, 801, hook-shaped tool changing robot, 802, rotating shaft, 803, tool changing motor. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0022] The present invention provides a technical solution: a water quality sampling device for lakes in cold and arid areas during the ice-covered period, such as Figure 1 , 2 As shown, it includes a tracked robot chassis 101 . The tracked robot chassis 101 is a commonly used unmanned vehicle with communication and navigation functions. A frame 102 is fixed in the middle of the tracked robot chassis 101 .

[0023] like Figure 2 , 3 As shown, a tool outlet 103 is provided under the frame 102, a spindle assembly 300 is provided in the frame 102 for lifting, and a tool changing robot arm 800 is provided in the frame 102 for rotating. The tool changing robot arm 800 can simultaneously clamp three kinds of tools, namely, a guide drill 104, a reamer drill 105 and a connecting hook 500. Figure 3 The middle guide drill 104 is installed on the spindle assembly 300, and the tool changing robot arm 800 clamps the reamer 105 and the connecting hook 500. The spindle assembly 300 can replace the tool installed on the spindle assembly 300 through the tool changing robot arm 800, and the tools for the spindle assembly 300 are replaced successively through the tool changing robot arm 800.

[0024] When the spindle assembly 300 installs the tool, the tool changing robot arm 800 first rotates the tool required by the spindle assembly 300 to the bottom of the spindle assembly 300, and then the spindle assembly 300 descends and clamps the tool directly below the spindle assembly 300. Then the tool changing robot arm 800 moves away and separates from the tool clamped by the spindle assembly 300, and the spindle assembly 300 completes the installation of the tool.

[0025] When the spindle assembly 300 releases the tool, the spindle assembly 300 descends to the location of the tool changing robot arm 800, the tool changing robot arm 800 rotates and clamps the tool to be released, and then the spindle assembly 300 releases the tool clamped by the tool changing robot arm 800, and then the spindle assembly 300 rises, and the spindle assembly 300 completes the release of the tool, and the tool is replaced for the spindle assembly 300 in turn through the tool changing robot arm 800, so that the spindle assembly 300 can complete the drilling work through the guide drill 104, complete the reaming work through the reaming drill 105, and complete the sampling work through the connecting hook 500.

[0026] like Figure 2 , 4 As shown, a turntable 401 is rotatably provided on the frame 102 on one side of the tool outlet 103, and a plurality of sliding grooves 402 are provided on the turntable 401. A bracket 403 is slidably provided in each sliding groove 402, and a sampling bottle 600 is provided in each bracket 403. A push-pull mechanism 700 is provided on the frame 102, and the push-pull mechanism 700 can push the bracket 403 to the top of the tool outlet 103, and the connecting hook 500 can be detachably connected to the sampling bottle 600.

[0027] When the guide drill 104 is installed on the main shaft assembly 300, the guide drill 104 can be driven to drill a guide hole in the ice layer. When the reaming drill 105 is installed on the main shaft assembly 300, the reaming drill 105 can be driven to expand the guide drill 104. When the connecting hook 500 is installed on the main shaft assembly 300, the connecting hook 500 can be driven to connect the sampling bottle 600. Under the condition of the same hole opening input power, by drilling first and then reaming, it is convenient to open a larger hole in the ice layer, which is convenient for subsequent sampling work.

[0028] When sampling, the spindle assembly 300 first installs the connecting hook 500, and then the spindle assembly 300 lowers the connecting hook 500 to the sampling bottle 600, and then the turntable 401 rotates an empty sampling bottle 600 to the side of the tool outlet 103, and then the push-pull mechanism 700 pushes out the sampling bottle 600 on the side of the tool outlet 103 and the bracket 403 in which it is located, so that the sampling bottle 600 is connected to the connecting hook 500, and then the spindle assembly 300 drives the connecting hook 500 to rise, and then drives the sampling bottle 600 to rise, so that the sampling bottle 600 is separated from the bracket 403, and then the push-pull mechanism 700 pulls back the empty bracket 403, and then the spindle assembly 300 drives the connecting hook 500 and the sampling bottle 600 to descend, so that the sampling bottle 600 enters under the ice layer to complete the sampling work.

[0029] After the sampling bottle 600 has finished sampling, when storing the sample, the main shaft assembly 300 first drives the connecting hook 500 and the sampling bottle 600 to rise, and then the push-pull mechanism 700 pushes the empty bracket 403 to the bottom of the sampling bottle 600, and the main shaft assembly 300 drives the connecting hook 500 and the sampling bottle 600 to descend, and inserts the sampling bottle 600 into the empty bracket 403, and then the push-pull mechanism 700 pulls back the sampling bottle 600 and the bracket 403 storing the sample, so that the sampling bottle 600 is separated from the connecting hook 500, and the work of storing the sample is completed.

[0030] like Figure 5As shown, the connecting hook 500 includes a connecting rod 501, the upper end of which is clamped in a tool handle 502. The tool handle 502 is a standard part that assists in clamping a tool. In this embodiment, the guide drill 104 includes a guide drill bit and a tool handle 502, the reaming drill 105 includes a reaming drill bit and a tool handle 502, an upper pressure plate 503 is fixed to the lower end of the connecting rod 501, a V-shaped piece 504 is fixed under the upper pressure plate 503, and an interface is provided between the upper pressure plate 503 and the V-shaped piece 504.

[0031] like Figure 4-7 As shown, the sampling bottle 600 includes a bottle body 601, which can be vertically slidably arranged in the bracket 403, a rotating handle 602 is fixed on the bottle body 601, and the rotating handle 602 can enter the V-shaped groove of the V-shaped piece 504 through the interface of the connecting hook 500, and the rotating handle 602 can rotate in the V-shaped groove of the V-shaped piece 504, and a tilting counterweight is fixed at the bottom of the bottle body 601, and the tilting counterweight can keep the bottle body 601 tilted in a free state (such as Figure 6 as shown).

[0032] When the connecting hook 500 is connected to the sampling bottle 600, the spindle assembly 300 drives the connecting hook 500 to descend, so that the interface of the connecting hook 500 is highly aligned with the rotating handle 602 of the sampling bottle 600, and then the turntable 401 rotates an empty sampling bottle 600 to the side of the tool outlet 103, and then the push-pull mechanism 700 pushes out the sampling bottle 600 and the bracket 403 on the side of the tool outlet 103, so that the rotating handle 602 of the sampling bottle 600 enters the V-shaped groove of the V-shaped plate 504, and then the spindle assembly 300 drives the connecting hook 500 to rise, and then drives the sampling bottle 600 to rise, so that the sampling bottle 600 is separated from the bracket 403, completing the connection work between the connecting hook 500 and the sampling bottle 600.

[0033] After the sampling bottle 600 is separated from the bracket 403, the bottle body 601 is tilted under the action of the tilting counterweight, and then the push-pull mechanism 700 pulls back the empty bracket 403, and then the main shaft assembly 300 drives the connecting hook 500 and the sampling bottle 600 to descend, so that the bottle body 601 enters under the ice layer in a tilted state to complete the sampling work.

[0034] Since the bottle body 601 enters the ice layer in a tilted state to complete the sampling work, and returns to a vertical state after returning to the bracket 403, it can prevent the sample in the sampling bottle 600 from overflowing, prevent the overflowed sample from spilling onto the moving parts, and prevent the spilled sample from freezing the moving parts, thereby causing the moving parts to malfunction.

[0035] When the connecting hook 500 is separated from the sampling bottle 600, the main shaft assembly 300 and the push-pull mechanism 700 cooperate to first insert the sampling bottle 600 into the empty bracket 403, and then the main shaft assembly 300 drives the connecting hook 500 to descend, so that the interface of the connecting hook 500 is highly aligned with the rotating handle 602 of the sampling bottle 600, and then the push-pull mechanism 700 pulls back the sampling bottle 600 and the bracket 403 storing the sample, and then drives the rotating handle 602 of the sampling bottle 600 to separate from the V-shaped piece 504, completing the separation of the sampling bottle 600 and the connecting hook 500.

[0036] like Figure 5 , 6 As shown, in order to prevent the rotating handle 602 of the sampling bottle 600 from accidentally falling off from the connecting hook 500, the upper pressure plate 503 at the interface is rotatably provided with a protective sheet 505, and a torsion spring is provided between the protective sheet 505 and the upper pressure plate 503, one end of the torsion spring is fixed on the protective sheet 505, and the other end is fixed on the upper pressure plate 503, and the protective sheet 505 can close the interface.

[0037] When connecting, the rotating handle 602 of the sampling bottle 600 first pushes open the protective sheet 505 of the interface of the connecting hook 500 and enters the V-shaped groove of the V-shaped sheet 504 (the schematic diagram of the rotating handle 602 pushing open the protective sheet 505 is shown in FIG. Figure 6 The dotted line portion located inside the interface in the figure), and then the protection sheet 505 closes the interface again under the action of the torsion spring. When separating, the rotating handle 602 of the sampling bottle 600 pushes the protection sheet 505 open (the schematic diagram of the rotating handle 602 pushing the protection sheet 505 is shown in FIG. Figure 6 The dashed line on the outside of the interface).

[0038] like Figure 6 , 7 As shown, the sampling bottle 600 also includes a bottle cap 603, the bottle body 601 is opened upward, and the bottle cap 603 is rotatably arranged on one side of the bottle body 601. A balancing weight 604 is fixed on the side of the bottle cap 603, and the balancing weight 604 can balance the weight of the bottle cap 603. A horizontal counterweight 605 is fixed under the bottle cap 603, and the horizontal counterweight 605 can keep the bottle cap 603 horizontal in a free state.

[0039] The bottle cap 603 can prevent foreign matter from entering the bottle body 601. The bottle cap 603 can be kept in a horizontal state through the cooperation of the balancing weight 604 and the horizontal weight 605. Since the bottle body 601 enters the ice layer in an inclined state to complete the sampling work, and the horizontal weight 605 allows the bottle cap 603 to remain in a horizontal state when the bottle body 601 is inclined, the sampling bottle 600 can remain open during sampling (such as Figure 6As shown in the figure, since the bottle body 601 is in a vertical state in the bracket 403, and the horizontal counterweight 605 enables the bottle cap 603 to remain in a horizontal state when the bottle body 601 is in a vertical state, the sampling bottle 600 can remain closed after storing the sample, thereby realizing the automatic opening and closing of the sampling bottle 600.

[0040] like Figure 8 As shown, the push-pull mechanism 700 includes a push-pull arm 701 and a return plate 702. The return plate 702 is slidably arranged on the frame 102. When the return plate 702 is extended to the tool outlet 103, the inclined sampling bottle 600 can be restored to a vertical state. The push-pull arm 701 is slidably arranged on the frame 102 at the center of the turntable 401. When the push-pull arm 701 is extended, the bracket 403 can be pushed above the tool outlet 103. When the push-pull arm 701 is retracted, the bracket 403 can be pulled above the sliding groove 402. The push-pull arm 701 and the return plate 702 can move simultaneously.

[0041] When the sampling bottle 600 stores the sample after sampling, the spindle assembly 300 first drives the connecting hook 500 and the tilted sampling bottle 600 to rise, so that the bottom of the tilted sampling bottle 600 and the top of the bracket 403 are at the same horizontal plane, and then the push-pull mechanism 700 pushes the empty bracket 403 to the bottom of the sampling bottle 600. At the same time, the return plate 702 extends to the tool outlet 103 and contacts the tilted sampling bottle 600, and then gradually pushes the tilted sampling bottle 600 to a vertical position. Then the spindle assembly 300 drives the connecting hook 500 and the vertical sampling bottle 600 to descend, and inserts the sampling bottle 600 into the empty bracket 403.

[0042] like Figure 8 , 9 As shown, a push-pull rack 703 is fixed on the push-pull arm 701, and the push-pull rack 703 is meshedly connected with a push-pull gear 704 (shown in FIG. Fig. 9 ), the push-pull gear 704 is driven by a push-pull motor 705, and the push-pull motor 705 is fixed on the frame 102.

[0043] like Fig. 9 As shown, the tilting weight is fixed on the side of the sampling bottle 600 facing the center of the turntable 401, and the sampling bottle 600 is tilted toward the outside of the turntable 401 in a free state.

[0044] like Fig. 9 , 10 As shown, the return plate 702 slides toward the center of the rotating disk 401 when extended, and a return rack 706 (shown in FIG. Fig.10), the aligning rack 706 is meshedly connected with the aligning gear 707, and the aligning gear 707 is rotatably set on the frame 102. The aligning gear 707 is meshedly connected with the A gear 721, and the A gear 721 is rotatably set on the frame 102. The A gear 721 is meshedly connected with the B gear 722, and the B gear 722 is rotatably set on the frame 102. The B gear 722 is coaxially fixed with the aligning output bevel gear 708, and the aligning output bevel gear 708 is meshedly connected with the aligning input bevel gear 709, and the aligning input bevel gear 709 is rotatably set on the frame 102. The aligning input bevel gear 709 is coaxially fixed with the push-pull output bevel gear 710, and the push-pull output bevel gear 710 is meshedly connected with the push-pull input bevel gear 711, and the push-pull input bevel gear 711 is rotatably set on the frame 102, and the push-pull input bevel gear 711 is coaxially fixed on the push-pull gear 704.

[0045] The push-pull motor 705 can drive the push-pull gear 704 to rotate, and then drive the push-pull rack 703 to move, and then drive the push-pull arm 701 to move. The rotation of the push-pull gear 704 can drive the push-pull input bevel gear 711 to rotate, and then drive the push-pull output bevel gear 710 to rotate, and then drive the return input bevel gear 709 to rotate, and then drive the return output bevel gear 708 to rotate, and then drive the B gear 722 to rotate, and then drive the A gear 721 to rotate, and then drive the return gear 707 to rotate, and then drive the return rack 706 to move, and then drive the return plate 702 to move, that is, the push-pull arm 701 and the return plate 702 can move at the same time.

[0046] like Fig.11 As shown, a locking tongue 712 and a cam plate 713 are provided in the push-pull arm 701 for lifting and lowering. The retracted position of the locking tongue 712 is inside the push-pull arm 701, and the extended position of the locking tongue 712 is below the push-pull arm 701. The extended position of the locking tongue 712 is the initial position of the locking tongue 712, and the initial position of the cam plate 713 is outside the push-pull arm 701. The locking tongue 712 and the cam plate 713 are fixed to each other. When the cam plate 713 rises, it can drive the locking tongue 712 to retract into the push-pull arm 701. The locking tongue 712 is at one end of the push-pull arm 701 close to the tool outlet 103, and the cam plate 713 is in the middle of the push-pull arm 701.

[0047] like Fig.11 As shown, the cam plate 713 is provided with a cam groove, which includes a left transition groove 714, a left oblique groove 715, a retraction groove 716, a right oblique groove 717 and a right transition groove 718. The left transition groove 714, the left oblique groove 715, the retraction groove 716, the right oblique groove 717 and the right transition groove 718 are connected in sequence, and the left end of the left transition groove 714 and the right end of the right transition groove 718 are open.

[0048] like Fig.11As shown, a control bracket 719 is fixed on the frame 102 at the center of the turntable 401, and a roller 720 is rotatably set on the control bracket 719. When the push-pull arm 701 slides, it can drive the cam groove of the cam plate 713 to contact the roller 720. When the roller 720 is in the left transition groove 714, the cam plate 713 is in the initial position. When the roller 720 is in the left inclined groove 715, the cam plate 713 is between the initial position and the upper limit position. When the roller 720 is in the retraction groove 716, the cam plate 713 is in the upper limit position and drives the lock tongue 712 to retract into the push-pull arm 701. When the roller 720 is in the right inclined groove 717, the cam plate 713 is again between the initial position and the upper limit position. When the roller 720 is in the right transition groove 718, the cam plate 713 is again in the initial position.

[0049] like Figure 7 , 12 As shown, a push plate 404 is vertically fixed on the bracket 403, and the push plate 404 can contact the end of the push-pull arm 701 close to the tool outlet 103. A pull plate 405 is horizontally fixed on the push plate 404, and a locking hole 406 is opened on the pull plate 405, and the locking tongue 712 can be inserted into the locking hole 406.

[0050] When the push-pull arm 701 is connected to the bracket 403, the push-pull arm 701 first extends toward the direction of the tool outlet 103, thereby driving the cam groove of the cam plate 713 to contact the roller 720. When the roller 720 is in the left transition groove 714, the cam plate 713 is in the initial position. When the roller 720 is in the left inclined groove 715, the cam plate 713 rises. When the roller 720 is in the retraction groove 716, the cam plate 713 rises to the limit position and drives the lock tongue 712 to retract to the push-pull arm 701. 01, at this time, the end of the push-pull arm 701 close to the tool outlet 103 contacts the push plate 404 of the bracket 403, thereby driving the bracket 403 to move, and when the roller 720 is in the right inclined groove 717, the cam plate 713 descends, and when the roller 720 is in the right transition groove 718, the cam plate 713 is in the initial position, and the locking tongue 712 extends from the push-pull arm 701 and extends into the locking hole 406 of the bracket 403, completing the connection between the push-pull arm 701 and the bracket 403.

[0051] When the push-pull arm 701 is separated from the bracket 403, the push-pull arm 701 retracts toward the center of the turntable 401. At this time, since the locking tongue 712 still extends into the locking hole 406 of the bracket 403, the retraction of the push-pull arm 701 can drive the bracket 403 to move, thereby driving the cam groove of the cam plate 713 to contact the roller 720. When the roller 720 is in the right transition groove 718, the cam plate 713 is in the initial position. When the roller 720 is in the right inclined groove 717, the cam plate 713 rises. When the roller 720 is in the retraction groove 716, the cam plate 713 rises to the extreme position and drives the locking tongue 712 to retract into the push-pull arm 701, thereby disengaging from the locking hole 406 of the bracket 403 and separating the push-pull arm 701 from the bracket 403, completing the separation of the push-pull arm 701 and the bracket 403. During this process, the bracket 403 is pulled back to the initial position.

[0052] Then, the push-pull arm 701 continues to retract, and when the roller 720 is in the left inclined groove 715, the cam plate 713 descends. When the roller 720 is in the left transition groove 714, the cam plate 713 is in the initial position, and the cam plate 713 and the locking tongue 712 are reset.

[0053] like Figure 7 , 8 As shown, one end of a telescopic rod 407 is fixed on the turntable 401, and the other end of the telescopic rod 407 is fixed on the bracket 403. The telescopic rod 407 in this embodiment is a multi-stage telescopic rod. Figure 8 As shown, the retracted state is Figure 7 As shown, the telescopic rod 407 guides the bracket 403. When the bracket 403 is pushed out by 701, the telescopic rod 407 is in an extended state, and when the bracket 403 is pulled back to the initial position, the telescopic rod 407 is in a retracted state.

[0054] like Fig.12 As shown, each bracket 403 has a positioning notch 408 at the bottom, and a sleeve 409 is fixed to the side of each sliding groove 402 (also shown in FIG. Figure 7 ), the tail of the positioning pin 410 is slidably arranged in the sleeve 409, a spring is arranged between the positioning pin 410 and the sleeve 409, one end of the spring is fixed on the sleeve 409, and the other end is fixed on the positioning pin 410, the spring keeps the positioning pin 410 extending out of the sleeve 409 in a free state, the head of the positioning pin 410 is provided with a positioning inclined surface, when the bracket 403 is above the sliding groove 402, the head of the positioning pin 410 can be inserted into the positioning notch 408.

[0055] The positioning pin 410 can prevent the bracket 403 from accidentally falling off the sliding slot 402 . When the push-pull arm 701 drives the bracket 403 to move and the bracket 403 is separated from the sliding slot 402 , the positioning notch 408 of the bracket 403 can push open the positioning pin 410 .

[0056] like Fig. 9 , 13 As shown, the spindle assembly 300 includes a lifting platform 301, on which a spindle seat 302 is fixed, and a mechanical spindle 303 is rotatably arranged in the spindle seat 302. The mechanical spindle 303 is driven by a spindle motor 304 through a belt 305. The spindle motor 304 is fixed on the lifting platform 301, and a tool-beating cylinder 306 is fixed on the spindle seat 302. The mechanical spindle 303 is a component with a built-in rear-pull clamping tool handle mechanism (for clamping and releasing the tool handle 502). The tool-beating cylinder 306 is a component that is matched with the mechanical spindle, and the tool-beating cylinder 306 can drive the mechanical spindle 303 to clamp and release the tool handle 502.

[0057] like Fig. 9 As shown, the lifting platform 301 is slidably set on the guide shaft 106, the guide shaft 106 is fixed in the frame 102, the lifting platform 301 is threadedly connected with a screw 107, the screw 107 is rotatably set in the frame 102, the screw 107 is driven by the lifting motor 108, and the lifting motor 108 is fixed on the frame 102.

[0058] The rotation of the lifting motor 108 can drive the lead screw 107 to rotate, thereby driving the lifting platform 301 to move up and down, thereby realizing the lifting and lowering of the main shaft assembly 300.

[0059] like Figure 5 , 9 , 13, in order to make the interface of the connecting hook 500 face the turntable 401, a laser distance sensor 307 (shown in Fig.13 ), a baffle 308 is fixed to the handle 502 of the connecting hook 500 (shown in Figure 5 ), when the laser distance measuring sensor 307 is aligned with the baffle 308, the interface of the connecting hook 500 faces the turntable 401.

[0060] like Figure 3 , 14 As shown, the tool changing robot arm 800 in this embodiment includes a rotating shaft 802, one end of which is rotatably arranged in the frame 102, and the other end is fixed with three hook-shaped tool changing robots 801. The hook-shaped tool changing robot is a commonly used automatic tool changing fixture, which is provided with a spring plunger at the hook-shaped opening to prevent the tool handle from accidentally falling off. The hook-shaped tool changing robot 801 can clamp the tool handle 502, and the rotating shaft 802 is driven by a tool changing motor 803, and the tool changing motor 803 is fixed on the frame 102.

[0061] like Figure 2 As shown, in order to facilitate finding a solid position for subsequent work, an ice thickness measuring assembly 200 is provided in the frame 102, and the ice thickness is measured by the ice thickness measuring assembly 200.

[0062] like Figure 3 As shown, the ice thickness measuring assembly 200 includes an ice thickness gauge 201, which is fixed in a sheath 202. The ice thickness gauge is a commonly used measuring instrument. The sheath 202 is raised and lowered on a frame 102, and one end of an electric push rod 203 is fixed on the sheath 202, and the other end of the electric push rod 203 is fixed in the frame 102.

[0063] The extension of the electric push rod 203 can drive the sheath 202 to descend, and then drive the ice thickness gauge 201 to descend. After the ice thickness gauge 201 contacts the ice surface, it can measure the thickness of the ice layer. The retraction of the electric push rod 203 can drive the sheath 202 to rise, and then drive the ice thickness gauge 201 to rise, so that the ice thickness gauge 201 is retracted into the frame 102.

[0064] like Fig.15 As shown, a ring gear is coaxially fixed outside the turntable 401, and the ring gear is meshed with an intermediate gear 411, which is rotatably set on the frame 102. The intermediate gear 411 is meshed with an indexing input gear, which is rotatably set on the frame 102, and the output shaft of the indexing motor 412 is fixed on the indexing input gear, and the indexing motor 412 is fixed on the frame 102.

[0065] The rotation of the indexing motor 412 can drive the indexing input gear to rotate, thereby driving the intermediate gear 411 to rotate, thereby driving the ring gear to rotate, and thereby driving the turntable 401 to rotate.

[0066] Working process: The crawler robot chassis 101 measures the thickness of the ice layer through the ice layer thickness measuring component 200 and finds a solid position for subsequent work.

[0067] The spindle assembly 300 first installs the guide drill 104, which is driven to drill a guide hole in the ice layer through the tool outlet 103, and then replaced with the reaming drill 105 through the tool changing robot arm 800, which drives the reaming drill 105 to expand the guide drill 104, and then replaced with the connecting hook 500 through the tool changing robot arm 800.

[0068] When sampling, the spindle assembly 300 first installs the connecting hook 500, and then the spindle assembly 300 lowers the connecting hook 500 to the plane where the turntable 401 is located. Then the turntable 401 rotates an empty sampling bottle 600 to the side of the tool outlet 103, and then the push-pull mechanism 700 pushes out the sampling bottle 600 and the bracket 403 on the side of the tool outlet 103, so that the sampling bottle 600 is connected to the connecting hook 500, and then the spindle assembly 300 drives the connecting hook 500 to rise, thereby driving the sampling bottle. The sample bottle 600 rises, so that the sampling bottle 600 is separated from the bracket 403. After the sampling bottle 600 is separated from the bracket 403, the push-pull mechanism 700 pulls back the empty bracket 403 and drives the return plate 702 to move at the same time, so that the return plate 702 is separated from the sampling bottle 600. Then the bottle body 601 tilts under the action of the tilting counterweight, and then the main shaft assembly 300 drives the connecting hook 500 and the sampling bottle 600 to descend, so that the bottle body 601 enters under the ice layer in a tilted state to complete the sampling work.

[0069] After the bottle body 601 is tilted, the bottle cap 603 can be kept in a horizontal state by the cooperation of the balancing weight 604 and the horizontal weight 605, so that the sampling bottle 600 can be opened.

[0070] When storing samples, the main shaft assembly 300 first drives the connecting hook 500 and the sampling bottle 600 to rise, and then the push-pull mechanism 700 pushes the empty bracket 403 to the bottom of the sampling bottle 600, and at the same time, the push-pull arm 701 extends to drive the return plate 702 to move, so that the return plate 702 restores the tilted sampling bottle 600 to a vertical state, and then the main shaft assembly 300 drives the connecting hook 500 and the vertical sampling bottle 600 to descend, and inserts the sampling bottle 600 into the empty bracket 403. After the bottle body 601 is vertical, the bottle cap 603 can be kept in a horizontal state with the cooperation of the balancing weight 604 and the horizontal weight 605, so that the sampling bottle 600 is closed, and then the push-pull mechanism 700 pulls back the sampling bottle 600 and the bracket 403 storing the sample, so that the sampling bottle 600 is separated from the connecting hook 500, and the work of storing the sample is completed.

[0071] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water quality sampling device for lakes in cold and arid areas during the ice-covered period, characterized by: It comprises a crawler robot chassis (101), wherein a frame (102) is fixed in the middle of the crawler robot chassis (101); A tool outlet (103) is provided under the frame (102); a spindle assembly (300) is provided in the frame (102) for lifting; a tool changing mechanical arm (800) is provided in the frame (102) for rotating; the tool changing mechanical arm (800) is capable of simultaneously clamping three kinds of tools, namely, a guide drill (104), a reamer drill (105) and a connecting hook (500); A rotating disk (401) is rotatably disposed on the frame (102) at one side of the tool outlet (103), a plurality of sliding slots (402) are disposed on the rotating disk (401), a bracket (403) is slidably disposed in each sliding slot (402), a sampling bottle (600) is disposed in each bracket (403), and a push-pull mechanism (700) is disposed on the frame (102); An upper pressing plate (503) is fixed to the lower end of the connecting hook (500), a V-shaped plate (504) is fixed below the upper pressing plate (503), and an interface is provided between the upper pressing plate (503) and the V-shaped plate (504); The sampling bottle (600) comprises a bottle body (601), which can be vertically slidably arranged in a bracket (403), a rotating handle (602) is fixed on the bottle body (601), and the rotating handle (602) can enter the V-shaped groove of the V-shaped piece (504) through the interface of the connecting hook (500), and the rotating handle (602) can rotate in the V-shaped groove of the V-shaped piece (504), and a tilting counterweight is fixed at the bottom of the bottle body (601), and the tilting counterweight can keep the bottle body (601) tilted in a free state.

2. The water quality sampling device for lakes in cold and arid areas during the ice-covered period according to claim 1 is characterized by: The upper pressing plate (503) at the interface is rotatably provided with a protective sheet (505), a torsion spring is provided between the protective sheet (505) and the upper pressing plate (503), one end of the torsion spring is fixed on the protective sheet (505), and the other end is fixed on the upper pressing plate (503), and the protective sheet (505) can close the interface.

3. The water quality sampling device for lakes in cold and arid areas during the ice-covered period according to claim 2 is characterized by: The sampling bottle (600) further comprises a bottle cap (603). The bottle body (601) is opened upward. The bottle cap (603) is rotatably arranged on one side of the bottle body (601). A balancing weight (604) is fixed on the side of the bottle cap (603). The balancing weight (604) can balance the weight of the bottle cap (603). A horizontal weight (605) is fixed under the bottle cap (603). The horizontal weight (605) can keep the bottle cap (603) horizontal in a free state.

4. The water quality sampling device for lakes in cold and arid areas during the ice-covered period according to claim 3 is characterized by: The push-pull mechanism (700) comprises a push-pull arm (701) and a return plate (702). The return plate (702) is slidably arranged on the frame (102). When the return plate (702) is extended to the tool outlet (103), the inclined sampling bottle (600) can be restored to a vertical state. The push-pull arm (701) is slidably arranged on the frame (102) at the center of the turntable (401). When the push-pull arm (701) is extended, the bracket (403) can be pushed to the top of the tool outlet (103). When the push-pull arm (701) is retracted, the bracket (403) can be pulled to the top of the sliding groove (402). The push-pull arm (701) and the return plate (702) can move simultaneously.

5. The water quality sampling device for lakes in cold and arid areas during the ice-covered period according to claim 4 is characterized by: A push-pull rack (703) is fixed on the push-pull arm (701), the push-pull rack (703) is meshedly connected with a push-pull gear (704), the push-pull gear (704) is driven by a push-pull motor (705), and the push-pull motor (705) is fixed on the frame (102); The tilting counterweight is fixed on a side of the sampling bottle (600) facing the center of the rotating disk (401), and the sampling bottle (600) is tilted toward the outside of the rotating disk (401) in a free state; When the return plate (702) is extended, it slides toward the center of the rotating disk (401). A return rack (706) is fixed on the return plate (702). The return rack (706) is meshedly connected with a return gear (707). The return gear (707) is rotatably arranged on the frame (102). The return gear (707) is meshedly connected with an A gear (721). The A gear (721) is rotatably arranged on the frame (102). The A gear (721) is meshedly connected with a B gear (722). The B gear (722) is rotatably arranged on the frame (102). On the frame (102), the B gear (722) is coaxially fixed with a return output bevel gear (708), the return input bevel gear (709) is rotatably arranged on the frame (102), the return input bevel gear (709) is coaxially fixed with a push-pull output bevel gear (710), the push-pull output bevel gear (710) is meshingly connected with a push-pull input bevel gear (711), the push-pull input bevel gear (711) is rotatably arranged on the frame (102), and the push-pull input bevel gear (711) is coaxially fixed on the push-pull gear (704).

6. The water quality sampling device for lakes in cold and arid areas during the ice-covered period according to claim 5 is characterized by: A locking tongue (712) and a cam plate (713) are provided in the push-pull arm (701) for lifting and lowering, wherein the retracted position of the locking tongue (712) is located in the push-pull arm (701), and the extended position of the locking tongue (712) is located below the push-pull arm (701). The extended position of the locking tongue (712) is the initial position of the locking tongue (712), and the initial position of the cam plate (713) is located outside the push-pull arm (701). The locking tongue (712) and the cam plate (713) are fixed to each other, and when the cam plate (713) rises, it can drive the locking tongue (712) to retract into the push-pull arm (701). The locking tongue (712) is located at one end of the push-pull arm (701) close to the tool outlet (103), and the cam plate (713) is located in the middle of the push-pull arm (701); The cam plate (713) is provided with a cam groove, which includes a left transition groove (714), a left oblique groove (715), a retracting groove (716), a right oblique groove (717) and a right transition groove (718). The left transition groove (714), the left oblique groove (715), the retracting groove (716), the right oblique groove (717) and the right transition groove (718) are connected in sequence, and the left end of the left transition groove (714) and the right end of the right transition groove (718) are open; A control bracket (719) is fixed on the frame (102) at the center of the turntable (401). A roller (720) is rotatably provided on the control bracket (719). When the push-pull arm (701) slides, the cam groove of the cam plate (713) can be driven to contact the roller (720). When the roller (720) is in the left transition groove (714), the cam plate (713) is in the initial position. When the roller (720) is in the left inclined groove (715), the cam plate (713) is in the initial position. ) is between the initial position and the upper limit position, when the roller (720) is in the retraction groove (716), the cam plate (713) is in the upper limit position and drives the lock tongue (712) to retract into the push-pull arm (701), when the roller (720) is in the right inclined groove (717), the cam plate (713) is again between the initial position and the upper limit position, and when the roller (720) is in the right transition groove (718), the cam plate (713) is again in the initial position; A push plate (404) is vertically fixed on the bracket (403), and the push plate (404) can contact one end of the push-pull arm (701) close to the tool outlet (103). A pull plate (405) is horizontally fixed on the push plate (404), and a locking hole (406) is formed on the pull plate (405), and a locking tongue (712) can be inserted into the locking hole (406).

7. The water quality sampling device for lakes in cold and arid areas during the ice-covered period according to claim 6 is characterized by: One end of a telescopic rod (407) is fixed on the turntable (401), and the other end of the telescopic rod (407) is fixed on the bracket (403). A positioning notch (408) is provided at the bottom of each bracket (403). A sleeve (409) is fixed on the side of each sliding groove (402). The tail of a positioning pin (410) is slidably arranged in the sleeve (409). A spring is arranged between the positioning pin (410) and the sleeve (409). One end of the spring is fixed on the sleeve (409), and the other end is fixed on the positioning pin (410). In a free state, the spring keeps the positioning pin (410) extending out of the sleeve (409). A positioning inclined surface is provided on the head of the positioning pin (410). When the bracket (403) is located above the sliding groove (402), the head of the positioning pin (410) can be inserted into the positioning notch (408).

8. The water quality sampling device for lakes in cold and arid areas during the ice-covered period according to claim 1 is characterized by: The spindle assembly (300) comprises a lifting platform (301), a spindle seat (302) is fixed on the lifting platform (301), a mechanical spindle (303) is rotatably arranged in the spindle seat (302), the mechanical spindle (303) is driven by a spindle motor (304) via a belt (305), the spindle motor (304) is fixed on the lifting platform (301), and a knife-beating cylinder (306) is fixed on the spindle seat (302); The lifting platform (301) is slidably arranged on a guide shaft (106), the guide shaft (106) is fixed in the frame (102), a lead screw (107) is threadedly connected to the lifting platform (301), the lead screw (107) is rotatably arranged in the frame (102), the lead screw (107) is driven by a lifting motor (108), and the lifting motor (108) is fixed on the frame (102); A laser distance sensor (307) is fixed under the lifting platform (301), and a baffle (308) is fixed on the handle (502) of the connecting hook (500). When the laser distance sensor (307) is aligned with the baffle (308), the interface of the connecting hook (500) faces the rotating disk (401).

9. The water quality sampling device for lakes in cold and arid areas during the ice-covered period according to claim 1 is characterized by: An ice thickness measuring assembly (200) is arranged in the frame (102).

10. The water quality sampling device for lakes in cold and arid areas during the ice-covered period according to claim 9, characterized in that: The ice thickness measuring assembly (200) comprises an ice thickness gauge (201), wherein the ice thickness gauge (201) is fixed in a sheath (202), the sheath (202) is arranged on a frame (102) for lifting, one end of an electric push rod (203) is fixed on the sheath (202), and the other end of the electric push rod (203) is fixed in the frame (102).

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