Flow meter positioning and fixing device for hydrological survey

Abstract

The invention discloses a hydrological survey flow velocity meter positioning and fixing device, and relates to the technical field of hydrological survey, a fixing plate is fixedly connected to the outer side of a fixing column, a supporting plate is fixedly connected to the top of the fixing column, an adjusting arm and a tensioning arm are fixedly connected to the side, away from the fixing column, of the supporting plate, and a positioning plate is slidably arranged on the inner side of the adjusting arm; a tightening plate is slidably arranged on the inner side of the tensioning arm, a positioning assembly is arranged on the fixing plate, a fixing assembly is jointly arranged on the positioning plate and the tightening plate, through cooperation of the arranged fixing assembly and the positioning assembly, the detector body can detect the water flow speeds of different depths, and the stable effect of the detector body in water can be guaranteed; through the tightening effect of the tightening wire coil, it is guaranteed that the position of the detector body in the water is always kept perpendicular to the positioning wire coil, and the capacity of the detector body for detecting the water speeds of different depths is improved.

Description

Technical Field

[0001] The invention relates to the technical field of hydrological survey, and in particular to a current meter positioning and fixing device for hydrological survey. Background Art

[0002] Hydrological survey is an important technical activity for systematically collecting and analyzing hydrological data, aiming to reveal the flow patterns, water quality and water volume changes of surface water and groundwater. By setting up observation stations and using professional equipment such as flow meters and water quality monitors, hydrological surveyors can measure and record key parameters such as water velocity, flow, water level, water depth and water quality indicators in real time. These data are extremely valuable for water conservancy project planning, water resources management, environmental protection and disaster prevention and mitigation. Through hydrological survey, we can better understand the distribution and utilization potential of water resources, and provide strong support for the formulation of scientific and reasonable water resources policies and protection measures. At the same time, hydrological survey is also an important means to prevent natural disasters such as floods and droughts, which helps to reduce disaster losses and protect people's lives and property.

[0003] After searching, the invention patent with Chinese patent number CN114353759B discloses a flow direction detection device based on a flow velocity calibration vehicle. Compared with the prior art, the invention patent with Chinese patent number CN114353759B is passed. The detector body and the fixing mechanism are arranged between the detector body and the connecting mechanism. The fixing mechanism is composed of a mounting block, two U-shaped plates, a locking plate and a plug rod. The U-shaped plate is arranged above the detector body, and the locking plate is slidably arranged on one side of the mounting block. The outer wall of the locking plate is slidably connected to the inner wall of the U-shaped plate. A socket is opened on one side of the lock plate, and the outer wall of the plug rod is movably inserted and connected with the inner wall of the socket. The present invention utilizes the arrangement of a mounting block, a U-shaped plate, a locking plate and an insertion rod. The locking plate is inserted into the U-shaped plate by sliding the locking plate on the mounting block, and then the insertion rod is inserted into the insertion hole on the locking plate, so that the locking plate can be positioned, thereby mounting the detector body on the bottom end of the mounting block. When disassembling, it is only necessary to pull out the insertion rod and then slide the locking plate from the U-shaped plate, thereby improving the convenience of disassembly and assembly of the detector.

[0004] However, in actual use, the above device is not easy to detect at multiple positions according to the depth of the water area due to the limited adjustment range of the cylinder. At the same time, due to the influence of vortices and cross currents in the water during adjustment, the detector is unstable when used in the water, which may cause errors when detecting forward water flow, resulting in inaccurate measurement results. Therefore, a current meter positioning and fixing device for hydrological survey is proposed. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art that it is difficult to perform positioning detection at multiple positions and the detector has a poor fixing effect in water, and to propose a positioning and fixing device for a current meter for hydrological survey.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A positioning and fixing device for a current meter for hydrological survey, comprising a fixing column and a detector body, wherein a fixing plate is fixedly connected to the outer side of the fixing column, and the fixing plate is used to support a positioning assembly, and a supporting plate is fixedly connected to the top of the fixing column, and the supporting plate is used to support an adjusting arm and a tensioning arm, and an adjusting arm and a tensioning arm are fixedly connected to the side of the supporting plate away from the fixing column, respectively, and the adjusting arm and the tensioning arm are used to support a positioning plate and a tightening plate, and a positioning plate is slidably provided on the inner side of the adjusting arm, and a tightening plate is slidably provided on the inner side of the tensioning arm;

[0008] The fixed plate is provided with a positioning assembly, and the positioning assembly includes a main motor, a first wire drum and a second wire drum installed on the fixed plate, the main motor is used to drive the first wire drum and the second wire drum, a transmission structure is commonly provided between the main motor, the first wire drum and the second wire drum, and the transmission structure is used for transmission among the main motor, the first wire drum and the second wire drum, and the transmission structure includes a first belt commonly installed between the first wire drum and the main motor, the first belt is used to drive the first wire drum, a second belt commonly installed between the main motor and the second wire drum, and the second belt is used to drive the second wire drum, and the positioning assembly drives the circular motion of the first belt and the second belt respectively through the rotation of the main motor, thereby controlling the retraction and extension of the first wire drum and the second wire drum, and the retraction and extension of the first wire drum and the second wire drum respectively control the repeated movement of the pulling positioning plate on the adjusting arm and the repeated movement of the tightening plate on the tensioning arm;

[0009] The positioning plate and the tightening plate are jointly provided with a fixing component, and the fixing component includes a positioning motor and a positioning wire drum installed on the positioning plate, a tightening motor and a tightening wire drum installed on the tightening plate, the positioning motor is used to drive the positioning wire drum, and the tightening motor is used to drive the tightening wire drum, and the positioning wire drum and the tightening wire drum are jointly fixedly connected with the detector body, and the fixing component drives the retraction and extension of the positioning wire drum by controlling the rotation of the positioning motor, and drives the retraction and extension of the tightening wire drum by controlling the rotation of the tightening motor, and realizes the tightening movement of the detector body through the retraction and extension of the positioning wire drum and the tightening wire drum.

[0010] The above technical solution further includes:

[0011] The first wire drum, the second wire drum and the main motor are all fixedly connected to the fixed plate, the output end of the main motor is fixedly connected to a rotating shaft, the outer sides of the rotating shaft are respectively fixedly connected to a first driving wheel and a large gear, the rotating shaft is used to drive the first driving wheel and the large gear to rotate, the first wire drum is fixedly connected to the first driven wheel at one end close to the first driving wheel, the first driving wheel and the first driven wheel are jointly connected with the first belt, the rotation of the first driving wheel drives the first belt to move in a circular motion, the circular motion of the first belt drives the first driven wheel to rotate, and the rotation of the first driven wheel drives the first wire drum to be retracted and released.

[0012] A fixed block is symmetrically fixedly connected to one side of the fixed plate close to the main motor, and a rotating rod is connected and rotated together between the two fixed blocks. The outer side of the rotating rod extends to the outer side of the fixed block and is fixedly connected to a small gear at one end close to the large gear. The small gear is meshed with the large gear, and the transmission ratio between the large gear and the small gear is less than 1, so acceleration is achieved. Since the transmission ratio between the large gear and the small gear is less than 1, the tensioning arm is designed to have an angle with the adjusting arm, so that the sliding speed of the tightening plate can be greater than the sliding speed of the positioning plate, so that the tightening plate and the positioning plate always maintain a relatively horizontal position.

[0013] A second driven wheel is fixedly connected to a side of the second wire drum close to the large gear, and a second driving wheel is fixedly connected to an outer side of the rotating rod. The second driving wheel is located between two fixed blocks. The second driving wheel and the second driven wheel are jointly sleeved and connected to the second belt. The rotation of the second driving wheel drives the second belt to move in a circular motion. The circular motion of the second belt drives the second driven wheel to rotate. The rotation of the second driven wheel drives the second wire drum to be retracted and released.

[0014] The outer side of the first wire drum is movably connected with a first steel wire rope, and the outer side of the second wire drum is movably connected with a second steel wire rope. The first steel wire rope and the second steel wire rope are respectively used to pull the positioning plate and the tightening plate to move repeatedly.

[0015] The support plate is fixedly connected to one side close to the fixed plate with a first guide wheel, and the adjustment arm is symmetrically fixedly connected to one side away from the support plate with a third guide wheel. The first guide wheel and the two third guide wheels are movably connected to the first steel wire rope, and the first guide wheel and the third guide wheels are used for changing the direction of the first steel wire rope.

[0016] The support plate is fixedly connected to one side close to the fixed plate with a second guide wheel, and the tensioning arm is symmetrically fixedly connected to one side away from the support plate with a fourth guide wheel. The fourth guide wheel and the two second guide wheels are movably connected to the second steel wire rope, and the second guide wheel, the fourth guide wheel and the third guide wheel are used for changing the direction of the second steel wire rope.

[0017] A first sliding rod is fixedly connected to the inner side of the adjusting arm, the first sliding rod is slidably connected to the positioning plate, the first steel wire rope is fixedly connected to the positioning plate, and the first sliding rod is used to assist the guiding movement of the positioning plate.

[0018] A second sliding rod is fixedly connected to the inner side of the tensioning arm, the second sliding rod is slidably connected to the tightening plate, the second steel wire rope is fixedly connected to the tightening plate, and the second sliding rod is used to help guide the movement of the tightening plate.

[0019] The positioning motor is fixedly connected to the positioning wire drum, and the positioning motor and the positioning wire drum are fixedly connected to the positioning plate together, the tightening motor is fixedly connected to the tightening wire drum, and the tightening motor and the tightening wire drum are fixedly connected to the tightening plate together. Through the joint action of the tightening wire drum and the tightening plate, the position of the detector body in the water is always maintained in a vertical state with the positioning wire drum, thereby improving the ability of the detector body to detect water velocities at different depths.

[0020] The present invention has the following beneficial effects:

[0021] 1. In the present invention, by using the positioning assembly and the transmission assembly in coordination, it is possible to ensure that the positioning positions of the tightening reel and the positioning reel remain relatively consistent when the detector body is looking for the detection position, ensure that the detector body remains stable during the process of detecting the water flow velocity, ensure that the detector body is parallel to the water flow direction, prevent the detector body from tilting in the river, and reduce the impact of the lateral water flow on the detector body, thereby improving the effect of the forward water flow on the detector body, and further improving the accuracy of the detection data of the detector body.

[0022] 2. In the present invention, by cooperating with the fixing assembly and the positioning assembly, the detector body can detect the water flow velocity at different depths and ensure the stability of the detector body in the water. By the tightening effect of the tightening reel, the position of the detector body in the water is ensured to always remain vertical to the positioning reel, thereby improving the ability of the detector body to detect water velocities at different depths. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a first overall structural schematic diagram of a current meter positioning and fixing device for hydrological survey proposed by the present invention;

[0024] Figure 2 It is a second overall structural schematic diagram of the present invention;

[0025] Figure 3 It is a schematic diagram of the structure of the regulating arm in the present invention;

[0026] Figure 4 It is a schematic diagram of the structure of the positioning component in the present invention;

[0027] Figure 5 It is a schematic diagram of the structure of the transmission structure part in the present invention;

[0028] Figure 6 It is a schematic diagram of the main structure of the tester in the present invention;

[0029] Figure 7 It is a schematic diagram of the structure of the positioning component in the present invention.

[0030] In the figure: 1. fixed column; 2. fixed plate; 3. adjusting arm; 4. tensioning arm; 5. support plate; 6. detector body; 7. first wire drum; 8. main motor; 9. first driven wheel; 10. first driving wheel; 11. first belt; 12. first steel wire rope; 13. rotating shaft; 14. large gear; 15. second wire drum; 16. second steel wire rope; 17. small gear; 18. fixed block; 19. rotating rod; 20. second driving wheel; 21. second belt; 22. first slide bar; 23. first guide wheel; 24. second guide wheel; 25. second slide bar; 26. tightening plate; 27. fourth guide wheel; 28. tightening motor; 29. ​​positioning motor; 30. tightening wire drum; 31. positioning wire drum; 32. positioning plate; 33. third guide wheel; 34. second driven wheel. DETAILED DESCRIPTION

[0031] 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.

[0032] Embodiment 1

[0033] like Figure 1-Figure 7 As shown, a positioning and fixing device for a current meter for hydrological survey proposed by the present invention comprises a fixing column 1 and a detector body 6, a fixing plate 2 is fixedly connected to the outer side of the fixing column 1, the fixing plate 2 is used to support the positioning assembly, a supporting plate 5 is fixedly connected to the top of the fixing column 1, the supporting plate 5 is used to support the adjusting arm 3 and the tensioning arm 4, the adjusting arm 3 and the tensioning arm 4 are respectively fixedly connected to the side of the supporting plate 5 away from the fixing column 1, the adjusting arm 3 and the tensioning arm 4 are used to support the positioning plate 32 and the tightening plate 26, the positioning plate 32 is slidably provided on the inner side of the adjusting arm 3, and the tightening plate 26 is slidably provided on the inner side of the tensioning arm 4;

[0034] A positioning assembly is provided on the fixed plate 2, and the positioning assembly includes a main motor 8, a first wire drum 7, and a second wire drum 15 installed on the fixed plate 2, the main motor 8 is used to drive the first wire drum 7 and the second wire drum 15, and a transmission structure is commonly provided between the main motor 8, the first wire drum 7, and the second wire drum 15, and the transmission structure is used for transmission among the main motor 8, the first wire drum 7, and the second wire drum 15. The transmission structure includes a first belt 11 commonly installed between the first wire drum 7 and the main motor 8, the first belt 11 is used to drive the first wire drum 7, and a second belt 21 commonly installed between the main motor 8 and the second wire drum 15, and the second belt 21 is used to drive the second wire drum 15. The positioning assembly drives the circular motion of the first belt 11 and the second belt 21 respectively through the rotation of the main motor 8, thereby controlling the retraction and extension of the first wire drum 7 and the second wire drum 15, and the retraction and extension of the first wire drum 7 and the second wire drum 15 respectively control the repeated movement of the pulling positioning plate 32 on the adjusting arm 3 and the repeated movement of the tightening plate 26 on the tensioning arm 4;

[0035] A fixing component is commonly provided on the positioning plate 32 and the tightening plate 26, and the fixing component comprises a positioning motor 29 and a positioning wire drum 31 installed on the positioning plate 32, and a tightening motor 28 and a tightening wire drum 30 installed on the tightening plate 26. The positioning motor 29 is used to drive the positioning wire drum 31, and the tightening motor 28 is used to drive the tightening wire drum 30. The positioning wire drum 31 and the tightening wire drum 30 are commonly fixedly connected to the detector body 6. The fixing component drives the retraction and extension of the positioning wire drum 31 by controlling the rotation of the positioning motor 29, and drives the retraction and extension of the tightening wire drum 30 by controlling the rotation of the tightening motor 28. The tightening movement of the detector body 6 is realized by the retraction and extension of the positioning wire drum 31 and the tightening wire drum 30.

[0036] The first wire drum 7, the second wire drum 15 and the main motor 8 are all fixedly connected to the fixed plate 2, the output end of the main motor 8 is fixedly connected to the rotating shaft 13, the outer sides of the rotating shaft 13 are respectively fixedly connected to the first driving wheel 10 and the large gear 14, the rotating shaft 13 is used to drive the first driving wheel 10 and the large gear 14 to rotate, the first wire drum 7 is fixedly connected to the first driven wheel 9 at one end close to the first driving wheel 10, the first driving wheel 10 and the first driven wheel 9 are jointly connected with the first belt 11, the first driving wheel 10 rotates to drive the first belt 11 to move in a circle, the first belt 11 moves in a circle to drive the first driven wheel 9 to rotate, and the first driven wheel 9 rotates to drive the first wire drum 7 to be retracted and released.

[0037] A fixed block 18 is symmetrically fixedly connected to one side of the fixed plate 2 close to the main motor 8, and a rotating rod 19 is connected between the two fixed blocks 18 for common rotation. The outer side of the rotating rod 19 extends to the outer side of the fixed block 18 and is fixedly connected to one end close to the large gear 14 with a small gear 17. The small gear 17 is meshed with the large gear 14. Since the transmission ratio between the large gear 14 and the small gear 17 is less than 1, the tensioning arm 4 is designed to have an angle with the adjusting arm 3, so that the sliding speed of the tightening plate 26 can be greater than the sliding speed of the positioning plate 32, so that the tightening plate 26 and the positioning plate 32 always maintain a relatively horizontal position.

[0038] A second driven wheel 34 is fixedly connected to one side of the second wire drum 15 close to the large gear 14, and a second driving wheel 20 is fixedly connected to the outer side of the rotating rod 19. The second driving wheel 20 is located between the two fixed blocks 18. The second driving wheel 20 and the second driven wheel 34 are jointly connected with the second belt 21. The rotation of the second driving wheel 20 drives the second belt 21 to move in a circular motion. The circular motion of the second belt 21 drives the second driven wheel 34 to rotate. The rotation of the second driven wheel 34 drives the second wire drum 15 to be retracted and released.

[0039] In this embodiment, during use, the staff first needs to determine the position of the water area to be measured, and then control the rotation of the main motor 8. The rotation of the main motor 8 drives the rotation of the first driving wheel 10, and the rotation of the first driving wheel 10 drives the movement of the first belt 11. The circular motion of the first belt 11 drives the rotation of the first driven wheel 9 mounted thereon, and the rotation of the first driven wheel 9 drives the rotation of the first wire drum 7. The rotation of the first wire drum 7 drives the retraction and release of the first steel wire rope 12. The first steel wire rope 12 is designed to be mounted on the first wire drum 7 at both ends. When one end releases the wire, the other end completes the retraction. Therefore, the movement of the first steel wire rope 12 is guided by the first guide wheel 23 and the two third guide wheels 33. The first steel wire rope 12 pulls the positioning plate 32 to slide back and forth along the guiding action of the first slide bar 22, and then positions according to the determined measuring position.

[0040] In the above process, the rotation of the main motor 8 drives the rotation of the rotating shaft 13, the rotation of the rotating shaft 13 drives the rotation of the large gear 14, the rotation of the large gear 14 drives the rotation of the small gear 17 meshing therewith, the rotation of the small gear 17 drives the rotation of the rotating rod 19, the two fixed blocks 18 provide support for the rotating rod 19, the rotation of the rotating rod 19 drives the rotation of the second driving wheel 20, the rotation of the second driving wheel 20 drives the circular motion of the second belt 21, and the circular motion of the second belt 21 drives the movement of the second driven wheel 34. Since the large gear 14 and the small gear 17 drive the small gear, similarly, the second driven wheel 34 drives the retraction and release of the second steel wire rope 16 during the rotation process, so that the tightening plate 26 slides along the second slide rod 25 under the guidance of the tensioning arm 4. Since the transmission ratio between the large gear 14 and the small gear 17 is less than 1, the tensioning arm 4 is designed to have an angle with the adjusting arm 3, so that the sliding speed of the tightening plate 26 can be greater than the sliding speed of the positioning plate 32, so that the tightening plate 26 and the positioning plate 32 always maintain a relatively horizontal position.

[0041] During the above process, it can be ensured that the positioning positions of the positioning plate 32 and the tightening plate 26 remain relatively consistent when the detector body 6 is looking for the detection position, thereby ensuring that the detector body 6 remains stable during the process of detecting the water flow velocity, ensuring that the detector body 6 is parallel to the water flow direction, preventing the detector body 6 from tilting in the river, and reducing the impact of the lateral water flow on the detector body 6, thereby improving the effect of the forward water flow on the detector body 6, and further improving the accuracy of the detection data of the detector body 6.

[0042] Embodiment 2

[0043] like Figure 1-Figure 7 As shown, based on the first embodiment, the outer side of the first wire drum 7 is movably connected with a first steel wire rope 12, and the outer side of the second wire drum 15 is movably connected with a second steel wire rope 16, and the first steel wire rope 12 and the second steel wire rope 16 are respectively used to pull the positioning plate 32 and the tightening plate 26 to move repeatedly.

[0044] The first guide wheel 23 is fixedly connected to one side of the support plate 5 close to the fixed plate 2, and the third guide wheel 33 is symmetrically fixedly connected to the side of the adjusting arm 3 away from the support plate 5. The first guide wheel 23 and the two third guide wheels 33 are jointly connected to the first steel wire rope 12 with a movable connection groove, and the first guide wheel 32 and the third guide wheel 33 are used for changing the direction of the first steel wire rope 12.

[0045] The side of the support plate 5 close to the fixed plate 2 is fixedly connected with the second guide wheel 24, and the side of the tensioning arm 4 away from the support plate 5 is symmetrically fixedly connected with the fourth guide wheel 27. The fourth guide wheel 27 and the two second guide wheels 24 are movably connected to the second steel wire rope 16. The second guide wheel and the fourth guide wheel are used for changing the direction of the second steel wire rope 16.

[0046] A first slide bar 22 is fixedly connected to the inner side of the adjusting arm 3 , the first slide bar 22 is slidably connected to the positioning plate 32 , the first steel wire rope 12 is fixedly connected to the positioning plate 32 , and the first slide bar 22 is used to help guide the movement of the positioning plate 32 .

[0047] A second slide bar 25 is fixedly connected to the inner side of the tensioning arm 4 , the second slide bar 25 is slidably connected to the tightening plate 26 , the second steel wire rope 16 is fixedly connected to the tightening plate 26 , and the second slide bar 25 is used to help guide the movement of the tightening plate 26 .

[0048] The positioning motor 29 is fixedly connected to the positioning wire drum 31, which are jointly fixedly connected to the positioning plate 32, the tightening motor 28 is fixedly connected to the tightening wire drum 30, which are jointly fixedly connected to the tightening plate 26. Through the joint action of the tightening wire drum 30 and the tightening plate 26, the position of the detector body 6 in the water is always maintained vertically with the positioning wire drum, thereby improving the ability of the detector body 6 to detect water velocities at different depths.

[0049] In this embodiment, when detecting the water inlet and outlet speeds at different water flow depths, due to the inconsistency of the water flow speeds at different water depths, when the positioning wire drum 31 is released by controlling the rotation of the positioning motor 29, the detector body 6 is placed in the water under the action of gravity. The detector body 6 will move along the water flow due to the water flow. At this time, the position of the detector body 6 will be offset. When the position of the detector body 6 in the water is offset, the detector body 6 will be affected by the lateral water flow or eddy current, causing the detector body 6 to be offset, resulting in poor detection effect. Therefore, by rotating the tightening motor 28 and controlling the retraction and release of the tightening wire drum 30, a force consistent with the water flow direction is applied to the detector body 6, so that it returns to its original position, that is, a position in the same vertical plane as the adjustment arm 3.

[0050] During the above process, the detector body 6 can detect water flow velocities at different depths and ensure the stability of the detector body 6 in the water. Through the tightening effect of the tightening wire drum 30, the position of the detector body 6 in the water is always maintained vertically with the positioning wire drum 31, thereby improving the ability of the detector body 6 to detect water velocities at different depths.

[0051] 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 positioning and fixing device for a current meter for hydrological survey, comprising a fixing column (1) and a detector body (6), characterized in that: The outer side of the fixing column (1) is fixedly connected to a fixing plate (2), the top of the fixing column (1) is fixedly connected to a supporting plate (5), the side of the supporting plate (5) away from the fixing column (1) is respectively fixedly connected to an adjusting arm (3) and a tensioning arm (4), the inner side of the adjusting arm (3) is slidably provided with a positioning plate (32), and the inner side of the tensioning arm (4) is slidably provided with a tightening plate (26); The fixed plate (2) is provided with a positioning assembly, the positioning assembly comprising a main motor (8), a first wire drum (7) and a second wire drum (15) installed on the fixed plate (2); a transmission structure is commonly provided between the main motor (8), the first wire drum (7) and the second wire drum (15); the transmission structure comprises a first belt (11) commonly installed between the first wire drum (7) and the main motor (8); and a second belt (21) commonly installed between the main motor (8) and the second wire drum (15); the positioning assembly drives the first belt (11) and the second belt (21) to move in a circular motion respectively through the rotation of the main motor (8), thereby controlling the retraction and extension of the first wire drum (7) and the second wire drum (15); and the retraction and extension of the first wire drum (7) and the second wire drum (15) respectively control the repeated movement of the pulling positioning plate (32) on the adjusting arm (3) and the repeated movement of the tightening plate (26) on the tensioning arm (4); The positioning plate (32) and the tightening plate (26) are jointly provided with a fixing assembly, the fixing assembly comprising a positioning motor (29) and a positioning wire drum (31) installed on the positioning plate (32), and a tightening motor (28) and a tightening wire drum (30) installed on the tightening plate (26); the positioning wire drum (31) and the tightening wire drum (30) are jointly fixedly connected to the detector body (6); the fixing assembly drives the retraction and extension of the positioning wire drum (31) by controlling the rotation of the positioning motor (29); the retraction and extension of the tightening wire drum (30) is driven by controlling the rotation of the tightening motor (28); and the tightening movement of the detector body (6) is realized by the retraction and extension of the positioning wire drum (31) and the tightening wire drum (30).

2. A positioning and fixing device for a current meter for hydrological survey according to claim 1, characterized in that: The first wire drum (7), the second wire drum (15) and the main motor (8) are all fixedly connected to the fixed plate (2); the output end of the main motor (8) is fixedly connected to a rotating shaft (13); the outer sides of the rotating shaft (13) are respectively fixedly connected to a first driving wheel (10) and a large gear (14); one end of the first wire drum (7) close to the first driving wheel (10) is fixedly connected to a first driven wheel (9); the first driving wheel (10) and the first driven wheel (9) are jointly sleeved and connected to a first belt (11).

3. A current meter positioning and fixing device for hydrological survey according to claim 1, characterized in that: A fixed block (18) is symmetrically fixedly connected to one side of the fixed plate (2) close to the main motor (8), a rotating rod (19) is connected between the two fixed blocks (18) for common rotation, an outer side of the rotating rod (19) extends to the outer side of the fixed block (18) and is fixedly connected to an end close to the large gear (14) with a small gear (17), and the small gear (17) is meshed with the large gear (14).

4. A positioning and fixing device for a current meter for hydrological survey according to claim 3, characterized in that: A second driven wheel (34) is fixedly connected to one side of the second wire drum (15) close to the large gear (14); a second driving wheel (20) is fixedly connected to the outer side of the rotating rod (19); the second driving wheel (20) is located between the two fixed blocks (18); and the second driving wheel (20) and the second driven wheel (34) are sleeved and connected to the second belt (21).

5. The device for positioning and fixing a current meter for hydrological survey according to claim 1, characterized in that: The outer side of the first wire drum (7) is movably connected to a first steel wire rope (12), and the outer side of the second wire drum (15) is movably connected to a second steel wire rope (16).

6. A positioning and fixing device for a current meter for hydrological survey according to claim 5, characterized in that: The side of the support plate (5) close to the fixed plate (2) is fixedly connected to a first guide wheel (23), and the side of the adjustment arm (3) away from the support plate (5) is symmetrically fixedly connected to a third guide wheel (33), and the first guide wheel (23) and the two third guide wheels (33) are movably connected to the first steel wire rope (12).

7. A positioning and fixing device for a current meter for hydrological survey according to claim 5, characterized in that: The side of the support plate (5) close to the fixed plate (2) is fixedly connected to a second guide wheel (24), and the side of the tensioning arm (4) away from the support plate (5) is symmetrically fixedly connected to a fourth guide wheel (27), and the fourth guide wheel (27) and the two second guide wheels (24) are movably connected to the second steel wire rope (16).

8. The device for positioning and fixing a current meter for hydrological survey according to claim 5, characterized in that: A first sliding rod (22) is fixedly connected to the inner side of the adjusting arm (3); the first sliding rod (22) is slidably connected to a positioning plate (32); and the first steel wire rope (12) is fixedly connected to the positioning plate (32).

9. A positioning and fixing device for a current meter for hydrological survey according to claim 5, characterized in that: A second sliding rod (25) is fixedly connected to the inner side of the tensioning arm (4), the second sliding rod (25) is slidably connected to the tightening plate (26), and the second steel wire rope (16) is fixedly connected to the tightening plate (26).

10. A positioning and fixing device for a current meter for hydrological survey according to claim 1, characterized in that: The positioning motor (29) is fixedly connected to the positioning wire drum (31), and the positioning motor (29) and the positioning wire drum (31) are fixedly connected to the positioning plate (32). The tightening motor (28) is fixedly connected to the tightening wire drum (30), and the tightening motor (28) and the tightening wire drum (30) are fixedly connected to the tightening plate (26).

Images