CN217111633U - Lake water quality testing for hydraulic engineering uses sampling device - Google Patents

Abstract

The utility model provides a hydraulic engineering uses lake sampling device for water quality testing relates to water quality testing technical field. This sampling device for lake water quality testing for hydraulic engineering, including frame and bearing seat, bearing seat fixed connection is in the frame top, frame top fixedly connected with backup pad, backup pad one side fixedly connected with connecting seat, the standing groove has been seted up at the connecting seat top, the inside rack that is provided with of standing groove, the rack bottom is provided with the sampler barrel, be provided with the connecting rod between sampler barrel and the rack, the inside suction subassembly that is equipped with of sampler barrel. This sampling device for lake water quality testing for hydraulic engineering, the rack can move down and adjust to the sampler barrel that drives the rack bottom and set up can adjust suitable position downwards, and the device of being convenient for can take a sample to the water of the different degree of depth of lake, has improved the scope of sample and water quality testing's effect.

Description

Lake water quality testing for hydraulic engineering uses sampling device

Technical Field

The utility model relates to a sampling device specifically is sampling device for lake water quality testing for hydraulic engineering belongs to water quality testing technical field.

Background

Among the influencing factors of lake water quality, there are the form and size of lake itself and the biological activity process in lake, in addition to the influencing factors common to other natural water qualities (such as chemical composition of make-up water source, climate, geology and soil conditions). These factors have a great influence on the quality of lake water, especially on the temperature, dissolved gases and biological protoplasm of lakes, which is a main characteristic that the quality of lake water is different from the quality of river water and the quality of underground water.

Sampling device for lake water quality testing for hydraulic engineering is used for taking to the water in the lake, has just personnel to carry out subsequent detection, and current sampling device can only take a sample to the water on lake surface, can not take a sample to the water of the different degree of depth of lake, has restricted the scope of sample, has reduced water quality testing's effect.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model aims at providing a sampling device for lake water quality testing for hydraulic engineering in order to solve above-mentioned problem to solve for the hydraulic engineering in the prior art sampling device for lake water quality testing, be used for taking to the water in the lake, just there is the personnel to carry out subsequent detection, current sampling device can only take a sample to the water on lake surface, can not take a sample to the water of the different degree of depth in lake, the scope of sample has been restricted, the problem of water quality testing's effect has been reduced.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: sampling device for lake water quality testing for hydraulic engineering, including frame and bearing seat, bearing seat fixed connection is in the frame top, frame top fixedly connected with backup pad, backup pad one side fixedly connected with connecting seat, the standing groove has been seted up at the connecting seat top, the inside rack that is provided with of standing groove, the rack bottom is provided with the sampler barrel, be provided with the connecting rod between sampler barrel and the rack, the inside suction subassembly that is equipped with of sampler barrel, the sampler barrel top is provided with the limiting plate, limiting plate top fixedly connected with ring, limiting plate one side is equipped with spacing subassembly, rack one side is provided with the bull stick, the rack opposite side is provided with the winding drum, the winding of winding drum outside has the rope, be equipped with drive assembly between bull stick and the winding drum, the connecting seat top is equipped with the pulling subassembly.

Preferably, the inside both sides of standing groove all are moulded there is first spout, the equal fixedly connected with slide bar in rack both sides, two the slide bar all through two first spouts and connecting seat sliding connection, two slide bars all through two first spouts and connecting seat sliding connection mode, the rack of being convenient for adjust the stability when removing from top to bottom.

Preferably, the connecting rod both ends respectively with rack and sampler barrel fixed connection, the second spout has been seted up in the connecting rod outside, the inside shaping of second spout has the draw-in groove.

Preferably, the sampling tube is provided with a suction pipe, the outer side of the suction pipe is provided with a one-way water inlet valve, the outer side of the sampling tube is provided with a water drainage pipe, and the outer side of the water drainage pipe is provided with a one-way water outlet valve.

Preferably, the suction subassembly is including taking out the dish, take out the dish sliding connection inside the sampler barrel, it is equipped with two and takes out the pole, two to take out the pole for taking out the vertical central line symmetric distribution of dish, two take out pole one end all pass the sampler barrel top and with sampler barrel sliding connection, two take out the equal fixed connection in limiting plate bottom of pole one end, two take out the pole outside all the cover and be equipped with first reset spring, two first reset spring both ends respectively with limiting plate and sampler barrel fixed connection, two first reset spring's setting is convenient for play the effect that elastic stretching and elastic resetting reset.

Preferably, spacing subassembly includes spacing groove and gag lever post, the connecting rod passes the spacing groove, gag lever post one end is passed limiting plate one side and is extended to the limiting groove inside, gag lever post other end fixedly connected with draws the piece, gag lever post outside cover is equipped with buffer spring, the buffer spring both ends respectively with draw piece and limiting plate fixed connection, gag lever post one end is passed through second spout and connecting rod sliding connection, gag lever post one end and draw-in groove looks adaptation mode, and the gag lever post one end card of being convenient for is gone into the limiting plate and is spacing in the draw-in groove.

Preferably, the through-hole has been seted up at the frame top, rope one end and a winding section of thick bamboo fixed connection, the rope other end passes the through-hole, the rope other end and ring fixed connection, connecting seat top fixedly connected with third support, third support one side is rotated and is connected with two pulleys, two the pulley is for the horizontal central line symmetric distribution of third support, the rope sets up in two the pulley outside, the rope other end and ring fixed connection are convenient for through rope pulling ring to make the limiting plate can reciprocate certain position.

Preferably, a first gear is fixedly connected to one end of the rotating rod, the first gear is meshed with the rack and connected with the rotating rod, a first belt pulley is fixedly connected to the outer side of the rotating rod, a first support is arranged between the first belt pulley and the first gear, the first support is rotatably connected to the outer side of the rotating rod, the first support is fixedly connected to the top of the connecting seat, a positive and negative motor is fixedly connected to the top of the connecting seat, the output end of the positive and negative motor is fixedly connected with the other end of the rotating rod, and the rack can be conveniently adjusted to move up and down through a first gear and rack meshing connection mode.

Preferably, transmission assembly includes the dwang, dwang fixed connection is in the winding reel bottom, the dwang rotates to be connected in the connecting seat top, dwang outside fixedly connected with worm wheel, the meshing of the worm wheel outside is connected with the worm, the worm outside rotates and is connected with the second support, second support fixed connection is at the connecting seat top, worm one end fixedly connected with second belt pulley, be connected through belt transmission between first belt pulley and the second belt pulley, through belt transmission connected mode between first belt pulley and the second belt pulley, be convenient for receive the reel and carry out corotation and reversal, be favorable to the unwrapping wire and the receipts line of rope.

Preferably, the pulling assembly comprises a pull rod, the pull rod is arranged between the two pulleys, one end of the pull rod is fixedly connected with a pull ring, the rope penetrates through the pull ring, a fourth support is slidably connected to the outer side of the pull rod, the fourth support is fixedly connected to the top of the connecting seat, one end of the pull rod is fixedly connected with a pull handle, a second reset spring is sleeved on the outer side of the pull rod, two ends of the second reset spring are respectively fixedly connected with the fourth support and the pull handle, and the second reset spring is arranged to play roles of elastic stretching and elastic resetting.

The utility model provides a lake sampling device for water quality testing for hydraulic engineering, its beneficial effect who possesses as follows:

1. this sampling device for lake water quality testing for hydraulic engineering, the rack can move down and adjust to the sampler barrel that drives the rack bottom and set up can adjust suitable position downwards, and the device of being convenient for can take a sample to the water of the different degree of depth of lake, has improved the scope of sample and water quality testing's effect.

2. This sampling device for lake water quality testing for hydraulic engineering, gag lever post one end card is gone into in the inside fashioned draw-in groove of second spout, and the water of being convenient for inhale in the sampling tube can not receive the effect that two first reset spring elasticity reset, discharges the water in the sampling tube, has improved the stability of sampling tube sample, has prevented the rivers play of inhaling in the sampling tube, the stability of the sampling tube sample of being convenient for.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the structure of the rotating rod of the present invention;

FIG. 3 is an enlarged view of the structure of part A of FIG. 1 according to the present invention;

fig. 4 is a schematic view of the worm structure of the present invention;

FIG. 5 is a schematic view of the sampling tube structure of the present invention;

fig. 6 is a schematic structural view of the limiting assembly of the present invention.

In the figure: 1. a frame; 2. a load bearing seat; 3. a support plate; 4. a connecting seat; 5. a placement groove; 7. a rack; 8. a slide bar; 9. a connecting rod; 10. a sampling tube; 11. a limiting plate; 12. a circular ring; 13. drawing the plate; 14. drawing a rod; 15. a first return spring; 16. a suction tube; 17. a drain pipe; 19. a limiting rod; 20. a buffer spring; 21. a second chute; 22. a card slot; 23. a first gear; 24. a rotating rod; 25. a first support; 27. a second support; 28. a worm; 29. rotating the rod; 30. a worm gear; 31. winding the roll; 32. a rope; 33. a pull ring; 34. a pulley; 35. a third support; 36. a fourth support; 37. a pull rod; 38. a second return spring; 39. a limiting groove.

Detailed Description

The embodiment of the utility model provides a hydraulic engineering uses lake sampling device for water quality testing.

Referring to fig. 1, 2, 3, 4, 5 and 6, the sampling device comprises a vehicle frame 1 and a bearing seat 2, the bearing seat 2 is fixedly connected to the top of the vehicle frame 1, a support plate 3 is fixedly connected to the top of the vehicle frame 1, a connecting seat 4 is fixedly connected to one side of the support plate 3, a placing groove 5 is formed in the top of the connecting seat 4, a rack 7 is arranged in the placing groove 5, first sliding grooves are formed in two sides of the placing groove 5, sliding rods 8 are fixedly connected to two sides of the rack 7, the two sliding rods 8 are slidably connected to the connecting seat 4 through the two first sliding grooves, a sampling tube 10 is arranged at the bottom of the rack 7, a suction tube 16 is arranged on the sampling tube 10, a one-way water inlet valve is arranged on the outer side of the suction tube 16, a drain tube 17 is arranged on the outer side of the drain tube 17, a one-way water outlet valve is arranged on the outer side of the drain tube 17, a connecting rod 9 is arranged between the sampling tube 10 and the rack 7, two ends of the connecting rod 9 are respectively fixedly connected to the rack 7 and the sampling tube 10, second spout 21 has been seted up in the connecting rod 9 outside, and the inside shaping of second spout 21 has draw-in groove 22, and the inside suction subassembly that is equipped with of sampler barrel 10, and sampler barrel 10 top is provided with limiting plate 11, and limiting plate 11 top fixedly connected with ring 12, limiting plate 11 one side are equipped with limiting assembly, and rack 7 one side is provided with bull stick 24, and rack 7 opposite side is provided with take-up reel 31.

A rope 32 is wound on the outer side of the winding drum 31, a through hole is formed in the top of the frame 1, one end of the rope 32 is fixedly connected with the winding drum 31, the other end of the rope 32 penetrates through the through hole, the other end of the rope 32 is fixedly connected with the ring 12, a third support 35 is fixedly connected with the top of the connecting seat 4, one side of the third support 35 is rotatably connected with two pulleys 34, the two pulleys 34 are symmetrically distributed relative to the horizontal central line of the third support 35, the rope 32 is arranged on the outer sides of the two pulleys 34, one end of the rotating rod 24 is fixedly connected with a first gear 23, the first gear 23 is meshed with the rack 7, a first belt pulley is fixedly connected with the outer side of the rotating rod 24, a first support 25 is arranged between the first belt pulley and the first gear 23, the first support 25 is rotatably connected with the outer side of the rotating rod 24, the first support 25 is fixedly connected with the top of the connecting seat 4, a positive and negative motor is fixedly connected with the top of the connecting seat 4, and the output end of the positive and negative motor is fixedly connected with the other end of the rotating rod 24, a transmission component is arranged between the rotating rod 24 and the winding drum 31, and a pulling component is arranged at the top of the connecting seat 4.

The transmission assembly comprises a rotating rod 29, the rotating rod 29 is fixedly connected to the bottom of the winding drum 31, the rotating rod 29 is rotatably connected to the top of the connecting seat 4, a worm wheel 30 is fixedly connected to the outer side of the rotating rod 29, a worm 28 is meshed to the outer side of the worm wheel 30, a second support 27 is rotatably connected to the outer side of the worm 28, the second support 27 is fixedly connected to the top of the connecting seat 4, a second belt pulley is fixedly connected to one end of the worm 28, and the first belt pulley and the second belt pulley are connected through belt transmission.

It is specific, move frame 1 to suitable position, through starting positive and negative motor, do not specifically prescribe a limit to positive and negative motor model, use adapter equipment as the standard, positive and negative motor output drives bull stick 24 forward rotation, fixed connection is connected with the meshing of rack 7 at the first gear 23 of 24 one ends of bull stick, make rack 7 can the downstream regulation, thereby it can the suitable position of downstream regulation to drive the sampling tube 10 that rack 7 bottom set up, the device of being convenient for can take a sample to the water of the different degree of depth lakes, the scope of the sample and water quality testing's effect have been improved.

The output end of the positive and negative motor drives the rotating rod 24 to rotate positively, the first gear 23 is meshed with the rack 7 to be connected, so that the sampling cylinder 10 can move downwards, the first belt pulley fixedly connected with the outer side of the rotating rod 24 is connected with the second belt pulley fixedly connected with one end of the worm 28 through belt transmission, the worm 28 is meshed with the worm wheel 30 to be connected, the worm wheel 30 drives the rotating rod 29 to rotate positively, so that the winding cylinder 31 can rotate positively, because the rope 32 is wound outside the winding cylinder 31, one end of the rope 32 is fixedly connected with the winding cylinder 31, the other end of the rope 32 penetrates through a through hole formed in the top of the connecting seat 4 to be fixedly connected with the ring 12, so that when the rack 7 drives the sampling cylinder 10 arranged at the bottom to move downwards, the rotation of the winding cylinder 31 can rotate along with the rotation, the rope 32 is paid off, the winding cylinder 31 rotates positively, and when the rope 32 is paid off, the cable 32 is fed slowly over one of the pulleys 34 to facilitate stability of the cable 32 payout.

Please refer to fig. 1, fig. 3, fig. 5 and fig. 6, the pumping assembly includes a pumping disc 13, the pumping disc 13 is slidably connected inside the sampling tube 10, two pumping rods 14 are arranged on the top of the pumping disc 13, the two pumping rods 14 are symmetrically distributed relative to the vertical central line of the pumping disc 13, one ends of the two pumping rods 14 penetrate the top of the sampling tube 10 and are slidably connected with the sampling tube 10, one ends of the two pumping rods 14 are fixedly connected to the bottom of the limiting plate 11, the outer sides of the two pumping rods 14 are respectively sleeved with a first return spring 15, and two ends of the two first return springs 15 are respectively fixedly connected with the limiting plate 11 and the sampling tube 10.

Spacing subassembly includes spacing groove 39 and gag lever post 19, connecting rod 9 passes spacing groove 39, 19 one ends of gag lever post pass 11 one sides of limiting plate and extend to inside the spacing groove 39, 19 other end fixedly connected with of gag lever post draws the piece, 19 outside covers of gag lever post are equipped with buffer spring 20, 20 both ends of buffer spring respectively with draw piece and 11 fixed connection of limiting plate, 19 one ends of gag lever post are passed through second spout 21 and 9 sliding connection of connecting rod, 19 one end of gag lever post and draw-in groove 22 looks adaptation.

The pulling assembly comprises a pull rod 37, the pull rod 37 is arranged between the two pulleys 34, one end of the pull rod 37 is fixedly connected with a pull ring 33, the rope 32 penetrates through the pull ring 33, a fourth support 36 is slidably connected to the outer side of the pull rod 37, the fourth support 36 is fixedly connected to the top of the connecting seat 4, one end of the pull rod 37 is fixedly connected with a pull handle, a second return spring 38 is sleeved on the outer side of the pull rod 37, and two ends of the second return spring 38 are respectively fixedly connected with the fourth support 36 and the pull handle.

Specifically, when rack 7 moves down, drive bottom fixed connection's connecting rod 9 and move down, because sampler barrel 10 fixed connection is in connecting rod 9 one end to make sampler barrel 10 move down, when sampler barrel 10 reachd a certain position, the rotation of winding cylinder 31 was to certain degree of rope 32 unwrapping wire.

When the sampling tube 10 is adjusted to reach a certain position and sampling is to be performed, a person can pull the pull handle to enable the pull rod 37 to be slidably connected with the fourth support 36, the pull rod 37 moves in one direction, so that the pull ring 33 fixedly connected with one end of the pull rod 37 can pull the rope 32 to move in one direction, at the moment, the other pulley 34 is arranged to protect the rope 32, the rope 32 is prevented from rubbing against the connecting seat 4 when the rope 32 is pulled, one end of the rope 32 can pull the limiting plate 11 upwards, the limiting plate 11 pulls the two pull rods 14 fixedly connected with the bottom upwards when pulled upwards, at the moment, the first return springs 15 sleeved on the outer sides of the two pull rods 14 are in an elastic stretching state, so as to drive the pull disc 13 to slide upwards in the sampling tube 10, the suction tube 16 mounted at the bottom of the sampling tube 10, and the one-way water inlet valve mounted on the outer side of the suction tube 16 is opened, facilitating the drawing of water into the sampling tube 10.

When the limiting plate 11 moves upwards, because the connecting rod 9 passes through the limiting groove 39 arranged at the top of the limiting plate 11, the buffer spring 20 arranged between the pulling block and the limiting plate 11 is in an elastic compression state at the moment, the buffer spring 20 fixedly connected with one side of the pulling block passes through one side of the limiting plate 11 and extends into the limiting groove 39, one end of the limiting rod 19 is in sliding connection with the second chute 21 arranged at the outer side of the connecting rod 9, when the pulling handle is pulled to a certain position in one direction, the limiting plate 11 moves upwards to a proper position, so that water in the sampling barrel 10 is absorbed to a certain degree, the limiting rod 19 is elastically reset by the buffer spring 20, one end of the limiting rod 19 is clamped into the clamping groove 22 formed in the second chute 21, the water absorbed into the sampling barrel 10 is conveniently prevented from being elastically reset by the two first reset springs 15, the water in the sampling barrel 10 is discharged, and the sampling stability of the sampling barrel 10 is improved, the water sucked into the sampling tube 10 is prevented from flowing out, and the sampling stability of the sampling tube 10 is facilitated.

When the water in the sampling tube 10 is to be taken out after sampling is finished, when the output end of the positive and negative motor drives the rotating rod 24 to rotate reversely for a certain position, the first gear 23 is meshed and connected with the rack 7, so that the rack 7 is lifted to a certain position, so that the sampling tube 10 is lifted to a certain position, the first belt pulley fixedly connected with the outer side of the rotating rod 24 is in transmission connection with the second belt pulley fixedly connected with one end of the worm 28 through a belt, the winding tube 31 is in reverse direction, the rolling cylinder 31 is rolled to a certain degree, so that a person can pull the pull block to make one end of the limiting rod 19 far away from the clamping groove 22, at the moment, the first return springs 15 sleeved on the outer sides of the two pull rods 14 are in an elastic return state, so that the drawing disc 13 slides downwards in the sampling cylinder 10, the drain pipe 17 arranged outside the sampling cylinder 10 and the one-way water outlet valve arranged outside the drain pipe 17 are opened, and the water in the sampling cylinder 10 is conveniently discharged.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. Lake sampling device for water quality testing for hydraulic engineering includes frame (1) and bearing seat (2), its characterized in that: the bearing seat (2) is fixedly connected to the top of the vehicle frame (1), the top of the vehicle frame (1) is fixedly connected with a supporting plate (3), one side of the supporting plate (3) is fixedly connected with a connecting seat (4), the top of the connecting seat (4) is provided with a placing groove (5), a rack (7) is arranged in the placing groove (5), the bottom of the rack (7) is provided with a sampling tube (10), a connecting rod (9) is arranged between the sampling tube (10) and the rack (7), a suction component is arranged in the sampling tube (10), the top of the sampling tube (10) is provided with a limiting plate (11), the top of the limiting plate (11) is fixedly connected with a ring (12), one side of the limiting plate (11) is provided with a limiting component, one side of the rack (7) is provided with a rotating rod (24), and the other side of the rack (7) is provided with a take-up tube (31), the rope (32) is wound on the outer side of the winding drum (31), a transmission assembly is arranged between the rotating rod (24) and the winding drum (31), and a pulling assembly is arranged at the top of the connecting seat (4).

2. The lake water quality detection sampling device for the hydraulic engineering as claimed in claim 1, wherein: the utility model discloses a rack, including standing groove (5), rack (7), rack (8), connecting seat (4), rack (5) inside both sides all the shaping have first spout, rack (7) both sides all fixedly connected with slide bar (8), two slide bar (8) all through two first spouts and connecting seat (4) sliding connection.

3. The lake water quality detection sampling device for the hydraulic engineering as claimed in claim 1, wherein: connecting rod (9) both ends respectively with rack (7) and sampling tube (10) fixed connection, second spout (21) have been seted up in connecting rod (9) outside, second spout (21) inside shaping has draw-in groove (22).

4. The lake water quality detection sampling device for the hydraulic engineering as claimed in claim 1, wherein: the sampling tube (10) is provided with a suction pipe (16), a one-way water inlet valve is arranged on the outer side of the suction pipe (16), a drain pipe (17) is arranged on the outer side of the sampling tube (10), and a one-way water outlet valve is arranged on the outer side of the drain pipe (17).

5. The lake water quality detection sampling device for the hydraulic engineering as claimed in claim 1, wherein: the suction assembly is including taking out dish (13), it is inside in sampler barrel (10) to take out dish (13) sliding connection, it is equipped with two and takes out pole (14), two to take out pole (14) for taking out the vertical central line symmetric distribution of dish (13), two take out pole (14) one end all pass sampler barrel (10) top and with sampler barrel (10) sliding connection, two take out the equal fixed connection in limiting plate (11) bottom of pole (14) one end, two it is equipped with first reset spring (15), two to take out pole (14) outside all the cover first reset spring (15) both ends respectively with limiting plate (11) and sampler barrel (10) fixed connection.

6. The lake water quality detection sampling device for the hydraulic engineering as claimed in claim 1, wherein: spacing subassembly includes spacing groove (39) and gag lever post (19), spacing groove (39) are passed in connecting rod (9), limiting plate (11) one side is passed and inside limiting groove (39) is extended to gag lever post (19) one end, gag lever post (19) other end fixedly connected with draws the piece, gag lever post (19) outside cover is equipped with buffer spring (20), buffer spring (20) both ends respectively with draw piece and limiting plate (11) fixed connection, gag lever post (19) one end is through second spout (21) and connecting rod (9) sliding connection, gag lever post (19) one end and draw-in groove (22) looks adaptation.

7. The lake water quality detection sampling device for the hydraulic engineering as claimed in claim 1, wherein: the through-hole has been seted up at frame (1) top, rope (32) one end and take-up drum (31) fixed connection, the through-hole is passed to the rope (32) other end, rope (32) other end and ring (12) fixed connection, connecting seat (4) top fixedly connected with third support (35), third support (35) one side is rotated and is connected with two pulley (34), two pulley (34) are for third support (35) horizontal center line symmetric distribution, rope (32) set up in two the pulley (34) outside.

8. The lake water quality detection sampling device for hydraulic engineering of claim 1, characterized in that: the utility model discloses a motor, including bull stick (24), first gear (23) of bull stick (24) one end fixedly connected with, first gear (23) are connected with rack (7) meshing, the first belt pulley of bull stick (24) outside fixedly connected with, be provided with between first belt pulley and first gear (23) first support (25), first support (25) rotate to be connected in the bull stick (24) outside, first support (25) fixed connection is in connecting seat (4) top, connecting seat (4) top fixedly connected with positive and negative motor, positive and negative motor output and bull stick (24) other end fixed connection.

9. The lake water quality detection sampling device for the hydraulic engineering of claim 8, which is characterized in that: the transmission assembly comprises a rotating rod (29), the rotating rod (29) is fixedly connected to the bottom of the winding drum (31), the rotating rod (29) is rotatably connected to the top of the connecting seat (4), the rotating rod (29) is fixedly connected with a worm wheel (30) on the outer side, the worm wheel (30) is meshed with a worm (28) on the outer side, the worm (28) is rotatably connected to a second support (27) on the outer side, the second support (27) is fixedly connected to the top of the connecting seat (4), a second belt pulley is fixedly connected to one end of the worm (28), and the first belt pulley and the second belt pulley are connected through belt transmission.

10. The lake water quality detection sampling device for the hydraulic engineering of claim 7, which is characterized in that: pulling assembly includes pull rod (37), pull rod (37) set up in two between pulley (34), pull rod (37) one end fixedly connected with pull ring (33), pull ring (33) are passed in rope (32), pull rod (37) outside sliding connection has fourth support (36), fourth support (36) fixed connection is in connecting seat (4) top, pull rod (37) one end fixedly connected with draws handle, pull rod (37) outside cover is equipped with second reset spring (38), second reset spring (38) both ends respectively with fourth support (36) and draw handle fixed connection.

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