A flow velocity monitoring device

Abstract

This utility model discloses a flow velocity monitoring device, belonging to the field of environmental monitoring technology. It includes a base plate, a base fixedly mounted on the base plate, a motor fixedly mounted inside the base, and a sliding block provided on the base. The output shaft of the motor is poweredly connected to the sliding block, and a positioning groove is provided on the sliding block. This utility model uses a rack and pinion mechanism to synchronously drive the fixed block to move, thereby increasing the distance between the sliding block and the flow velocity detection device, thus adjusting the distance between the flow velocity detection device and the bank, and further adjusting the position of the flow velocity detection device extending into the river. This allows for flow velocity monitoring of rivers of different widths or at different locations within the river, thereby improving the practicality and flexibility of the flow velocity monitoring device. Furthermore, when the fixed block abuts against the extension arm and the extension arm rotates into the rotation groove, it has a retractable function, reducing the size of the monitoring device and increasing its practicality and portability, thus facilitating the storage of the extension arm.

Description

Technical Field

[0001] This utility model relates to a flow velocity monitoring device, belonging to the field of environmental monitoring technology. Background Technology

[0002] In environmental monitoring, water velocity detection equipment is used to measure the flow velocity of water. However, existing water velocity detection equipment usually requires staff to fix the equipment on the bank of the river and insert the probe of the water velocity detection equipment into the water to measure the flow velocity.

[0003] The flow velocity of a river varies depending on its distance from the bank. For example, the flow velocity in the center of a river is significantly different from that near the bank. This necessitates separate monitoring. However, existing water flow velocity detection equipment generally uses fixed brackets or rigid arm structures. The horizontal distance between the probe and the bank is determined by the initial installation position. Usually, only the depth of the probe inserted into the water can be adjusted, not the position of the probe in the water, which reduces the practicality and flexibility of the water flow velocity detection equipment.

[0004] Therefore, a new solution is needed to address this problem. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a flow velocity monitoring device, which solves the problem that existing water flow velocity monitoring devices generally adopt fixed brackets or rigid arm structures, and the horizontal distance between the probe and the shore is determined by the initial installation position. Usually, only the depth of the probe inserted into the water can be adjusted, but the position of the probe inserted into the water cannot be adjusted, thus reducing the practicality and flexibility of the water flow velocity monitoring device.

[0006] The technical problem to be solved by this utility model is achieved by the following technical solution: A flow velocity monitoring device includes a base plate, a base fixedly installed on the base plate, a motor fixedly installed inside the base, a sliding block provided on the base, the output shaft of the motor being poweredly connected to the sliding block, a positioning groove provided on the sliding block, a positioning block slidably connected in the positioning groove, a rotating groove provided through the positioning block, an extension arm provided on the positioning block, rotating shafts fixedly connected to opposite sides of the extension arm, the rotating shafts being rotatably connected to the positioning block, an adjustment groove provided at one end of the extension arm, mounting grooves provided through the opposite sides of the sliding block, a rack slidably connected in the adjustment groove, a fixing block fixedly connected to the rack, a telescopic mechanism provided on the extension arm, the telescopic mechanism being used to drive the rack to move, and a detection mechanism provided on the fixing block, the detection mechanism being used to detect the flow velocity of the river.

[0007] By adopting the above technical solution, during use, the base plate is placed on the riverbank, and then the extension arm is pulled out to rotate axially around the rotation axis, causing the extension arm to extend out of the rotation groove and rotate away from the river. After the extension arm is rotated to a horizontal position, the detection mechanism is installed on the fixed block, and then the motor is started to drive the sliding block to rotate. During the rotation of the sliding block, the horizontal extension arm is rotated to the upper side of the river. When the extension arm is rotated to the appropriate position, the telescopic mechanism is rotated, and the telescopic mechanism rotates to drive the rack to slide left and right along the adjustment groove. During this process, the detection mechanism is moved simultaneously, thereby adjusting the distance between the detection mechanism and the bank, and thus adjusting the position for detecting the river flow velocity. After the detection mechanism is adjusted to the appropriate position, the positioning block is pushed down to slide, causing the detection mechanism to move downward and insert into the river. Then, the detection mechanism is used to monitor the river flow velocity. The operation is simple, and it can monitor different positions at different distances from the river and the bank, improving the flexibility of monitoring and increasing the practicality of the river monitoring equipment.

[0008] The present invention is further configured as follows: the detection mechanism includes a threaded hole through a fixed block, a threaded rod threadedly connected to the threaded hole, a fixed rod fixedly connected to one end of the threaded rod, an adjusting rod slidably connected inside the fixed rod, the end of the adjusting rod away from the threaded rod extending out of the fixed rod and fixedly mounted with a water flow rate detection device, and a fixing bolt threadedly connected to the fixed rod and penetrating its interior. The telescopic mechanism includes a second inner cavity, a fixed groove, and a first inner cavity opened within the telescopic arm. A positioning shaft is rotatably connected between the opposite inner walls of the second inner cavity, and a connecting rod is rotatably connected between the opposite inner walls of the first inner cavity. One end of the connecting rod penetrates into the fixed groove, which is connected to the adjusting groove. A gear meshing with a rack is fixedly connected to the connecting rod. A connecting hole is opened through the first inner cavity and the second inner cavity. A connecting wire is provided in the first inner cavity. One end of the connecting wire is fixedly connected to the connecting rod, and the other end of the connecting wire extends through the connecting hole into the second inner cavity and is fixedly connected to the positioning shaft. One end of the positioning shaft penetrates out of the outside of the telescopic arm and is fixedly connected to a rotating disk. A positioning mechanism for positioning the rotating disk is provided. The positioning mechanism includes a positioning bolt threaded through the rotating disk, the end of which abuts against one side surface of the extension arm, and a rotating arm fixedly connected to the rotating disk.

[0009] By adopting the above technical solution, in the initial state, the fixed block and the extension arm are in contact. At this time, rotating the extension arm can drive both the extension arm and the fixed block to rotate into the rotating groove, so that when the flow velocity monitoring equipment is idle, the space occupied by the equipment can be reduced, the volume of the flow velocity monitoring equipment can be reduced, making the flow velocity monitoring equipment easier to store and thus improving the practicality of the flow velocity monitoring equipment.

[0010] In use, rotating the rotating disk drives the positioning shaft to rotate. During the rotation of the positioning shaft, the connecting wire is wound up, and then the connecting wire is pulled and released from the connecting rod. In this process, the connecting rod rotates axially, which in turn drives the gear fixed on the connecting rod to rotate. At this time, the rotation of the gear drives the rack to move away from the sliding block. In this process, the length of the rack extending out of the adjustment groove is increased. The rack drives the fixed block to move simultaneously, thereby increasing the distance between the sliding block and the water flow velocity detection device. This adjusts the distance between the water flow velocity detection device and the bank, and thus adjusts the position of the water flow velocity detection device extending into the river. This allows for flow velocity monitoring of rivers of different widths or at different locations within the river, thereby improving the practicality and flexibility of the flow velocity monitoring device.

[0011] When the positioning bolt is rotated so that it is tightly abutted against the extension arm, the positioning bolt and the rotating disk are fixed in place, preventing the rotating disk from rotating. In turn, the tension spring and the positioning bolt work together to position the fixed block, so that the rack will not move easily after the positioning bolt is tightened. This, in turn, positions the water flow velocity detection equipment, making the monitoring process of the water flow velocity detection equipment more stable and preventing the rack from moving during the monitoring process.

[0012] By pulling the adjusting rod to extend it to a suitable length inside the fixed rod, the fixing bolt is rotated to make it tightly abut against the adjusting rod and fix it in place. By adjusting the length of the adjusting rod extending from the fixed rod, the depth at which the water flow velocity detection device is inserted into the river surface can be adjusted in advance, thereby increasing the practicality and applicability of the flow velocity monitoring device.

[0013] The present invention is further configured such that: a stabilizing groove communicating with the adjusting groove is provided on one side of the extension arm; a stabilizing box is fixedly connected to one side of the extension arm; a stabilizing block slidably connected to the stabilizing groove is fixedly connected to one side of the rack; a slider fixedly connected to the stabilizing block is slidably connected inside the stabilizing box; a limiting rod that slides through the slider is fixedly connected between the inner walls of the opposite sides of the stabilizing box; and a tension spring is fixedly connected between the side of the slider away from the fixed block and the inner wall of the stabilizing box.

[0014] By adopting the above technical solution, when the rotating disk is rotated in the forward direction, the fixed block can be moved away from the extension arm, and the rack moves during the movement, which in turn moves the stabilizing block and the slider. During this process, the tension spring is stretched, causing it to deform. When the rotating disk is rotated in the reverse direction, the rack and gear are reset under the action of the release force of the tension spring. During this process, the connecting rod is also reset, so that the connecting line is rewound onto the connecting rod. This, in turn, moves the fixed block closer to the extension arm until the fixed block abuts against the extension arm, thus facilitating the storage of the extension arm.

[0015] The present invention is further configured as follows: a positioning box is fixedly connected to one side of the positioning block, a support block is slidably connected inside the positioning box, support grooves are provided through the opposite sides of the positioning box, a limiting block is fixedly connected to one side of the support block and slidably connected to the support groove, a handle block is fixedly connected to the side of the support block away from the limiting block, two V-shaped grooves are provided through the extension arm, the limiting block is inserted into the V-shaped groove, and a fixing spring is fixedly connected between the side of the support block away from the sliding block and the inner wall of the positioning box.

[0016] By adopting the above technical solution, since the two V-grooves are set at a 90-degree angle with the rotation axis as the center, when the extension arm is in a horizontal state, the limiting block is inserted into one V-groove to fix the current state of the extension arm, preventing the extension arm from rotating axially around the rotation axis, thus keeping the extension arm in a horizontal state. At this time, the extension arm extends out of the rotation groove. When the handle block is pushed, the handle block drives the support block and the limiting block to move away from the extension arm. During this process, the fixing spring is compressed, causing the fixing spring to deform. When the limiting block slides out of the V-groove, the extension arm can be rotated. After rotating the extension arm 90 degrees, the extension arm rotates into the rotation groove. At this time, when the handle block is released, the release force of the fixing spring drives the support block and the limiting block to reset, thereby driving the limiting block to slide into the other V-groove, thus fixing the current state of the extension arm and positioning the extension arm in a vertical state. The extension arm rotating into the rotation groove has a storage function, reducing the size of the monitoring device and thus increasing the practicality and portability of the monitoring device.

[0017] The present invention is further configured such that: a limiting block is slidably connected to the sliding block and penetrates into the positioning groove; a pull block is fixedly connected to the side of the limiting block away from the sliding block; a positioning spring is fixedly connected between the pull block and the sliding block; multiple limiting grooves are opened on one side of the positioning block; the end of the limiting block away from the pull block is inserted into any limiting groove; and a positioning pin is provided through the bottom plate.

[0018] By adopting the above technical solution, the positioning nails are inserted into the soil on the riverbank to fix the base plate, thereby fixing the entire equipment to the riverbank.

[0019] Pulling the pull block causes the limiting block to slide out of the limiting groove. During this process, the positioning spring is stretched and deformed. Then, the positioning block is pushed or pulled, causing it to slide in the positioning groove, thereby adjusting the height of the positioning block. Finally, with the cooperation of the positioning spring, the pull block is pushed to drive the limiting block into the corresponding height of the limiting groove, thus fixing the positioning block at the corresponding height. This allows for adjustment of the extension height of the water flow velocity detection equipment into the river, thereby adjusting the monitoring depth and increasing the flexibility of the flow velocity monitoring equipment.

[0020] The present invention is further configured such that: a storage bucket is fixedly connected to one side of the sliding block, and the inner wall of the storage bucket on the lower side is threaded, and the end of the threaded rod can be inserted into the storage bucket and threadedly connected to the storage bucket.

[0021] By adopting the above technical solution, when in use, the water flow velocity detection device is inserted into the river to monitor the river's flow velocity. When disassembling, rotating the fixing rod causes the threaded rod to rotate, allowing the threaded rod to be unscrewed into the threaded hole. Unscrewing the threaded rod from the threaded hole allows the fixing rod to be removed from the fixing block. Then, the fixing rod and the threaded rod are inserted into the storage bucket, and the threaded rod is threadedly connected to the storage bucket, thus achieving storage of the fixing rod and the threaded rod, and also facilitating the simple storage of the water flow velocity detection device. The operation is simple, thereby increasing the practicality of the flow velocity monitoring device.

[0022] The beneficial effects of this utility model are: the rack synchronously drives the fixed block to move, thereby increasing the distance between the sliding block and the water flow velocity detection device, thereby adjusting the distance between the water flow velocity detection device and the bank, and thus adjusting the position of the water flow velocity detection device extending into the river. This allows for flow velocity monitoring for rivers of different widths or for different positions within the river, thereby improving the practicality and flexibility of the flow velocity monitoring device. Furthermore, when the fixed block abuts against the extension arm and the extension arm rotates into the rotating groove, it has a storage function for the extension arm, reducing the size of the monitoring device, thereby increasing the practicality and portability of the monitoring device, and facilitating the storage of the extension arm. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the rear structure of the sliding block of this utility model;

[0025] Figure 3 This is a schematic diagram of the sliding block structure of this utility model;

[0026] Figure 4 This is a vertical cross-sectional view of the extendable arm of this utility model;

[0027] Figure 5This is a schematic diagram of the rack structure of this utility model;

[0028] Figure 6 This is a schematic diagram of the handle block structure of this utility model;

[0029] Figure 7 This is a schematic diagram of the limiting block structure of this utility model.

[0030] In the picture:

[0031] 1. Base plate; 2. Base; 3. Sliding block; 4. Positioning block; 5. Motor; 6. Mounting slot; 7. Positioning slot; 8. Rotating slot; 9. Limiting slot; 10. Limiting block; 11. Pull-out block; 12. Positioning spring; 13. Extension arm; 14. Stabilizing box; 15. Positioning pin; 16. Fixing block; 17. Fixing rod; 18. Threaded rod; 19. Rack; 20. Adjusting rod; 21. Water flow rate detection device; 22. Fixing bolt; 23. Rotating shaft; 24. First inner cavity; 25. Fixing slot 26. Connecting hole; 27. Connecting wire; 28. Positioning shaft; 29. ​​Tension spring; 30. Slider; 31. Limiting rod; 32. Stabilizing block; 33. Stabilizing groove; 34. Positioning bolt; 35. Adjusting groove; 36. Threaded hole; 37. Rotating arm; 38. Rotating disk; 39. Connecting rod; 40. Gear; 41. Second inner cavity; 42. V-groove; 43. Positioning box; 44. Handle block; 45. Limiting block; 46. Fixing spring; 47. Support block; 48. Storage bucket; 49. Support groove. Detailed Implementation

[0032] To facilitate a clear understanding of the technical means, creative features, objectives, and effects of this utility model, the following details... Figure 1-7 As shown, this utility model is further illustrated.

[0033] like Figure 1-4As shown, this utility model is a flow velocity monitoring device, including a base plate 1, a base 2 fixedly installed on the base plate 1, a motor 5 fixedly installed inside the base 2, a sliding block 3 provided on the base 2, the output shaft of the motor 5 being poweredly connected to the sliding block 3, a positioning groove 7 provided on the sliding block 3, a positioning block 4 slidably connected in the positioning groove 7, a rotating groove 8 extending through the positioning block 4 and extending out of the side surface of the positioning block 4 away from the base 2, an extension arm 13 provided on the positioning block 4, and rotating shafts 23 fixedly connected to both opposite sides of the extension arm 13. 23 is rotatably connected to the positioning block 4. One end of the extension arm 13 is provided with an adjustment groove 35. The opposite sides of the sliding block 3 are provided with mounting grooves 6. The mounting grooves 6 extend out of the side surface of the sliding block 3 near the extension arm 13. A rack 19 is slidably connected in the adjustment groove 35. A telescopic mechanism is provided on the extension arm 13. The telescopic mechanism is used to drive the rack 19 to move. One end of the rack 19 extends out of the outside of the extension arm 13 through the adjustment groove 35 and is fixed with a fixing block 16. A detection mechanism is provided on the fixing block 16. The detection mechanism is used to detect the flow rate of the river.

[0034] In use, place the base plate 1 on the riverbank, then pull out the extension arm 13 to rotate axially around the rotating shaft 23, causing the extension arm 13 to extend out of the rotating groove 8 and rotate away from the river. After the extension arm 13 is rotated to a horizontal position, install the detection mechanism on the fixed block 16, then start the motor 5 to drive the sliding block 3 to rotate. During the rotation of the sliding block 3, the horizontal extension arm 13 is rotated to the upper side of the river. When the extension arm 13 is rotated to the appropriate position, rotate the telescopic mechanism. The telescopic mechanism rotates and drives the rack 19 to slide left and right along the adjusting groove 35. During this process, the detection mechanism is moved simultaneously, thereby adjusting the distance between the detection mechanism and the bank, and thus adjusting the position for detecting the river flow velocity. After the detection mechanism is adjusted to the appropriate position, push the positioning block 4 to slide downward, causing the detection mechanism to move downward and insert into the river. Then, use the detection mechanism to monitor the river flow velocity. The operation is simple, and it can monitor different positions at different distances from the river and the bank, improving the flexibility of monitoring and increasing the practicality of the river monitoring equipment.

[0035] like Figure 1-2As shown, the detection mechanism includes a threaded hole 36 through a fixed block 16. The fixed block 16 is fixedly connected to one end of the rack 19 extending outward from the extension arm 13. The fixed block 16 has a threaded hole 36 through it, and a threaded rod 18 is threadedly connected to the threaded hole 36. One end of the threaded rod 18 is fixedly connected to a fixed rod 17. An adjusting rod 20 is slidably connected inside the fixed rod 17. The end of the adjusting rod 20 away from the threaded rod 18 extends out of the fixed rod 17 and is fixedly installed with a water flow velocity detection device 21. The water flow velocity detection device 21 includes a probe, a connecting wire, a water flow velocity analyzer, etc. The water flow velocity detection device is the prior art in the existing published patent: an environmental monitoring water flow velocity detection device CN220471109U, which will not be described in detail here. A fixing bolt 22 is threadedly connected to the fixed rod 17 and penetrates into it. The end of the fixing bolt 22 abuts against the adjusting rod 20.

[0036] like Figure 1-5 As shown, the telescopic mechanism includes a second inner cavity 41, a fixing groove 25, and a first inner cavity 24, all located within the extension arm 13. A positioning shaft 28 is rotatably connected between the inner walls of opposite sides of the second inner cavity 41. A connecting rod 39 is rotatably connected between the inner walls of opposite sides of the first inner cavity 24. One end of the connecting rod 39 passes through the fixing groove 25, which is connected to the adjusting groove 35. A gear 40, which meshes with a rack 19, is fixedly connected to the connecting rod 39. A connecting hole 26 passes through the first inner cavity 24 and the second inner cavity 41. A connecting wire 27 is provided in the first inner cavity 24. One end of the connecting wire 27 is fixedly connected to the connecting rod 39 and is wound around the outer surface of the connecting rod 39 within the first inner cavity 24. The other end of the connecting wire 27 extends through the connecting hole 26 into the second inner cavity 41 and is fixedly connected to the positioning shaft 28. One end of the positioning shaft 28 passes through the outer side of the extension arm 13 and is fixedly connected to a rotating disk 38. A positioning mechanism for positioning the rotating disk 38 is provided on the rotating disk 38.

[0037] like Figure 5 As shown, the positioning mechanism includes a positioning bolt 34 threaded through the rotating disk 38. The end of the positioning bolt 34 abuts against one side surface of the extension arm 13. A rotating arm 37 is fixedly connected to the rotating disk 38. The rotating arm 37 is in the shape of an "L".

[0038] In the initial state, the fixed block 16 abuts against the extension arm 13. At this time, rotating the extension arm 13 can drive both the extension arm 13 and the fixed block 16 to rotate into the rotating groove 8, so that when the flow velocity monitoring equipment is idle, the space occupied by the equipment can be reduced, the volume of the flow velocity monitoring equipment can be reduced, and the flow velocity monitoring equipment can be more convenient to store and transport, thereby improving the practicality of the flow velocity monitoring equipment.

[0039] In use, rotating the rotating disk 38 causes the positioning shaft 28 to rotate. During the rotation of the positioning shaft 28, the connecting wire 27 is wound up, and the connecting wire 27 is then pulled and released from the connecting rod 39. During this process, the connecting rod 39 rotates axially, which in turn drives the gear 40 fixed on the connecting rod 39 to rotate. At this time, the rotation of the gear 40 causes the rack 19 to move away from the sliding block 3. During this process, the length of the rack 19 extending out of the adjustment groove 35 is increased. The rack 19 simultaneously drives the fixed block 16 to move, thereby increasing the distance between the sliding block 3 and the water flow velocity detection device 21. This adjusts the distance between the water flow velocity detection device 21 and the bank, and thus adjusts the position of the water flow velocity detection device 21 extending into the river. This allows for flow velocity monitoring for rivers of different widths or for different locations within the river, thereby improving the practicality and flexibility of the flow velocity monitoring device.

[0040] When the positioning bolt 34 is rotated so that it is tightly abutted against the extension arm 13, the positioning bolt 34 and the rotating disk 38 are fixed together, preventing the rotating disk 38 from rotating. In turn, the tension spring 29 and the positioning bolt 34 cooperate to position the fixing block 16, so that the rack 19 will not move easily after the positioning bolt 34 is tightened. This also positions the water flow velocity detection device 21, making the monitoring process of the water flow velocity detection device 21 more stable and preventing the rack 19 from moving during the monitoring process.

[0041] In this design, the tension spring 29 has strong elasticity. The thrust of the water flow velocity detection device 21 and the regulating rod 20 in a typical river is insufficient to cause the tension spring 29 to undergo elastic deformation, thereby improving the stability of the water flow velocity detection device 21 during the monitoring process. The "L"-shaped rotating arm 37 makes it easier to rotate the rotating disk 38, thereby improving the practicality of the flow velocity monitoring device.

[0042] like Figure 1-5 As shown, a stabilizing groove 33 communicating with the adjusting groove 35 is provided on one side of the extension arm 13. A stabilizing box 14 is fixedly connected to one side of the extension arm 13. A stabilizing block 32 that is slidably connected to the stabilizing groove 33 is fixedly connected to one side of the rack 19. The stabilizing block 32 extends into the stabilizing box 14 through the stabilizing groove 33. A slider 30 that is fixedly connected to the stabilizing block 32 is slidably connected inside the stabilizing box 14. A limiting rod 31 that slides through the slider 30 is fixedly connected between the inner walls of the opposite sides of the stabilizing box 14. A tension spring 29 is fixedly connected between the side of the slider 30 away from the fixed block 16 and the inner wall of the stabilizing box 14. The tension spring 29 is sleeved on the limiting rod 31. The extension and retraction path of the tension spring 29 is consistent with the sliding path of the slider 30.

[0043] When the rotating disk 38 is rotated in the forward direction, the fixed block 16 can be moved away from the extension arm 13. During the movement of the rack 19, the stabilizing block 32 and the slider 30 are moved. During this process, the tension spring 29 is stretched, causing the tension spring 29 to be stretched and deformed. When the rotating disk 38 is rotated in the reverse direction, the rack 19 and the gear 40 are reset under the action of the release elasticity of the tension spring 29. During this process, the connecting rod 39 is also rotated and reset, so that the connecting wire 27 is re-wound onto the connecting rod 39. This simultaneously drives the fixed block 16 to move closer to the extension arm 13 until the fixed block 16 abuts against the extension arm 13, thus facilitating the storage of the extension arm 13.

[0044] like Figure 4-7 As shown, a positioning box 43 is fixedly connected to one side of the positioning block 4. The positioning box 43 is hollow inside. A support block 47 is slidably connected inside the positioning box 43. Support grooves 49 are provided through the opposite sides of the positioning box 43. A limiting block 45 is fixedly connected to one side of the support block 47 and slidably connected to the support groove 49. A handle block 44 is fixedly connected to the side of the support block 47 away from the limiting block 45. Two V-shaped grooves 42 are provided through the extension arm 13. The two V-shaped grooves 42 are set at a 90-degree angle with the rotation shaft 23 as the center. The limiting block 45 is inserted into the V-shaped groove 42. The lower surface of the limiting block 45 abuts against the bottom wall of the V-shaped groove 42. A fixing spring 46 is fixedly connected between the side of the support block 47 away from the sliding block 3 and the inner wall of the positioning box 43. The extension path of the fixing spring 46 is consistent with the sliding path of the support block 47.

[0045] Because the two V-grooves 42 are set at a 90-degree angle with the rotation shaft 23 as the center, when the extension arm 13 is in a horizontal state, the limiting block 45 is inserted into one of the V-grooves 42 to fix the current state of the extension arm 13, so that the extension arm 13 cannot rotate axially with the rotation shaft 23 as the center, thus keeping the extension arm 13 in a horizontal state. At this time, the extension arm 13 extends out of the rotation groove 8. When the handle block 44 is pushed, the handle block 44 drives the support block 47 and the limiting block 45 to move away from the extension arm 13. During this process, the fixing spring 46 is compressed, causing the fixing spring 46 to deform under compression. When the limiting block 45 slides out of the V-groove 42, the extension arm 13 can be rotated. After rotating the extension arm 13 ninety degrees, the extension arm 13 rotates into the rotation groove 8. At this time, when the handle block 44 is released, the support block 47 and the limiting block 45 are reset under the action of the release force of the fixed spring 46. This causes the limiting block 45 to slide into another V-groove 42, thereby fixing the current state of the extension arm 13 and positioning the extension arm 13 in a vertical position. The extension arm 13 rotates into the rotation groove 8, which has a storage function, reducing the size of the monitoring device and thus increasing the practicality and portability of the monitoring device.

[0046] like Figure 3 As shown, a limiting block 10 is slidably connected to the sliding block 3 and passes through the positioning groove 7. A pull block 11 is fixedly connected to the side of the limiting block 10 away from the sliding block 3. A positioning spring 12 is fixedly connected between the pull block 11 and the sliding block 3. The extension path of the positioning spring 12 is consistent with the sliding path of the limiting block 10. Multiple limiting grooves 9 are opened on one side of the positioning block 4. The end of the limiting block 10 away from the pull block 11 is inserted into any of the limiting grooves 9. A positioning pin 15 is provided through the bottom plate 1.

[0047] Positioning nails 15 are inserted into the soil on the riverbank to fix the base plate 1, thereby fixing the entire equipment to the riverbank.

[0048] Pulling the pull block 11 causes the limiting block 10 to slide out of the limiting groove 9. During this process, the positioning spring 12 is stretched and deformed. Then, the positioning block 4 is pushed or pulled, causing it to slide in the positioning groove 7, thereby adjusting the height of the positioning block 4. Finally, with the cooperation of the positioning spring 12, the pull block 11 is pushed to drive the limiting block 10 into the corresponding height of the limiting groove 9, thereby fixing the positioning block 4 at the corresponding height. This allows the water flow velocity detection device 21 to extend into the river at a certain height, thereby adjusting the depth of river monitoring and increasing the flexibility of the flow velocity monitoring device.

[0049] like Figure 2 As shown, a storage bucket 48 is fixedly connected to one side of the sliding block 3. The inner wall of the storage bucket 48 on the lower side is threaded, and the end of the threaded rod 18 can be inserted into the storage bucket 48 and threadedly connected to the storage bucket 48.

[0050] In use, the water flow velocity detection device 21 is inserted into the river to monitor the river's flow velocity. For disassembly, rotating the fixing rod 17 causes the threaded rod 18 to rotate, allowing the threaded rod 18 to be unscrewed into the threaded hole 36. Unscrewing the threaded rod 18 removes the fixing rod 17 from the fixing block 16. Then, the fixing rod 17 and the threaded rod 18 are inserted into the storage bucket 48, ensuring the threaded rod 18 is threadedly connected to the storage bucket 48. This allows for easy storage of the fixing rod 17 and the threaded rod 18, and also facilitates the simple storage of the water flow velocity detection device 21. The operation is simple, thus increasing the practicality of the flow velocity monitoring device.

[0051] In this scheme, by pulling the adjusting rod 20 to extend it to a suitable length inside the fixed rod 17, the fixing bolt 22 is rotated to make the fixing bolt 22 tightly abut against the adjusting rod 20 to fix the adjusting rod 20. By adjusting the length of the adjusting rod 20 extending into the fixed rod 17, the depth of the water flow velocity detection device 21 inserted into the river surface can be adjusted in advance, thereby increasing the practicality and applicability of the flow velocity monitoring device.

[0052] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of this utility model. All such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A flow velocity monitoring device, comprising a base plate (1), characterized in that: A base (2) is fixedly installed on the base plate (1). A motor (5) is fixedly installed inside the base (2). A sliding block (3) is provided on the base (2). The output shaft of the motor (5) is poweredly connected to the sliding block (3). A positioning groove (7) is provided on the sliding block (3). A positioning block (4) is slidably connected inside the positioning groove (7). A rotating groove (8) is provided through the positioning block (4). An extension arm (13) is provided on the positioning block (4). Rotating shafts (23) are fixedly connected to the opposite sides of the extension arm (13). The rotating shaft (23) is rotatably connected to the positioning block (4). One end of the extension arm (13) is provided with an adjustment groove (35). The sliding block (3) is provided with mounting grooves (6) on both sides. A rack (19) is slidably connected in the adjustment groove (35). A fixing block (16) is fixedly connected on the rack (19). A telescopic mechanism is provided on the extension arm (13). The telescopic mechanism is used to drive the rack (19) to move. A detection mechanism is provided on the fixing block (16). The detection mechanism is used to detect the flow rate of the river.

2. A flow rate monitoring device according to claim 1, characterised in that: The detection mechanism includes a threaded hole (36) through a fixed block (16), a threaded rod (18) threadedly connected to the threaded hole (36), a fixed rod (17) fixedly connected to one end of the threaded rod (18), an adjusting rod (20) slidably connected inside the fixed rod (17), the end of the adjusting rod (20) away from the threaded rod (18) extending out of the fixed rod (17) and fixedly installed with a water flow rate detection device (21), and a fixed bolt (22) threadedly connected to the fixed rod (17) through its interior.

3. The flow velocity monitoring device according to claim 1, characterized in that: The telescopic mechanism includes a second inner cavity (41), a fixing groove (25), and a first inner cavity (24) opened within the extension arm (13). A positioning shaft (28) is rotatably connected between the opposite inner walls of the second inner cavity (41). A connecting rod (39) is rotatably connected between the opposite inner walls of the first inner cavity (24). One end of the connecting rod (39) passes through the fixing groove (25), which is connected to the adjusting groove (35). A gear (40) that meshes with the rack (19) is fixedly connected to the connecting rod (39). A connecting hole (26) is provided between the inner cavity (24) and the second inner cavity (41). A connecting line (27) is provided in the first inner cavity (24). One end of the connecting line (27) is fixedly connected to the connecting rod (39). The other end of the connecting line (27) extends into the second inner cavity (41) through the connecting hole (26) and is fixedly connected to the positioning shaft (28). One end of the positioning shaft (28) extends out of the outside of the extension arm (13) and is fixedly connected to the rotating disk (38). A positioning mechanism for positioning it is provided on the rotating disk (38).

4. The flow velocity monitoring device according to claim 3, characterized in that: The positioning mechanism includes a positioning bolt (34) threaded through the rotating disk (38), the end of the positioning bolt (34) abutting against one side surface of the extension arm (13), and a rotating arm (37) fixedly connected to the rotating disk (38).

5. The flow velocity monitoring device according to claim 3, characterized in that: The extension arm (13) has a stabilizing groove (33) communicating with the adjusting groove (35) on one side. A stabilizing box (14) is fixedly connected to one side of the extension arm (13). A stabilizing block (32) that is slidably connected to the stabilizing groove (33) is fixedly connected to one side of the rack (19). A slider (30) that is fixedly connected to the stabilizing block (32) is slidably connected inside the stabilizing box (14). A limiting rod (31) that slides through the slider (30) is fixedly connected between the inner walls of the opposite sides of the stabilizing box (14). A tension spring (29) is fixedly connected between the side of the slider (30) away from the fixed block (16) and the inner wall of the stabilizing box (14).

6. The flow velocity monitoring device according to claim 1, characterized in that: A positioning box (43) is fixedly connected to one side of the positioning block (4), and a support block (47) is slidably connected inside the positioning box (43). Support grooves (49) are provided through the opposite sides of the positioning box (43). A limiting block (45) is fixedly connected to one side of the support block (47) and slidably connected to the support groove (49). A handle block (44) is fixedly connected to the side of the support block (47) away from the limiting block (45). Two V-shaped grooves (42) are provided through the extension arm (13). The limiting block (45) is inserted into the V-shaped groove (42). A fixing spring (46) is fixedly connected between the side of the support block (47) away from the sliding block (3) and the inner wall of the positioning box (43).

7. The flow velocity monitoring device according to claim 1, characterized in that: A limiting block (10) is slidably connected to the sliding block (3) and passes through the positioning groove (7). A pull block (11) is fixedly connected to the side of the limiting block (10) away from the sliding block (3). A positioning spring (12) is fixedly connected between the pull block (11) and the sliding block (3). Multiple limiting grooves (9) are opened on one side of the positioning block (4). The end of the limiting block (10) away from the pull block (11) is inserted into any limiting groove (9). A positioning pin (15) is provided through the bottom plate (1).

8. The flow velocity monitoring device according to claim 2, characterized in that: A storage bucket (48) is fixedly connected to one side of the sliding block (3). The inner wall of the storage bucket (48) on the lower side is threaded, and the end of the threaded rod (18) can be inserted into the storage bucket (48) and threadedly connected to the storage bucket (48).

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