A bed load measuring device for water conservancy and hydrological measurement

Abstract

The present invention relates to the field of water conservancy measurement; a bed load measuring device for water conservancy and hydrological measurement is disclosed, comprising: an external drainage pipe and a measuring box, the measuring box is connected to the bottom of the external drainage pipe, a drainage bucket is fixedly installed at the bottom of the external drainage pipe, the bottom of the drainage bucket extends to the upper end of the measuring box, a measuring mechanism is arranged in the measuring box, and a drainage mechanism is arranged on the drainage pipe. The present invention sets a drainage mechanism as a water flow channel, sets an internal drainage pipe composed of four connected monomers as a water flow channel, and cooperates with a tension component to drive the internal drainage pipe to expand, thereby realizing the function of automatically adjusting the inner diameter size of the internal drainage pipe, so that it can perform measurement operations of different measurement areas on the same measurement area, changing the measurement method of using multiple bed load measuring devices, and is conducive to improving the measurement data deviation problem caused by differences between different bed load measuring devices.

Description

Technical Field

[0001] The present invention relates to the technical field of water conservancy measurement, and more particularly to a bed load measuring device for water conservancy and hydrological measurement. Background Art

[0002] Bedload usually refers to solid particles, such as sand and stone, that move along the riverbed or river bottom under the action of water flow. Bedload meter is an instrument specially used to measure bedload. Bedload meter has a wide range of applications in water conservancy, hydrology and environmental science, and is of great significance for understanding the sediment transport characteristics of rivers, riverbed evolution and the rational use of water resources.

[0003] The bed load meter mainly measures the bed load sediment transport rate, which refers to the mass of sediment passing through a river or flume section per unit time. During measurement, the bed load meter is buried on the riverbed, and the drainage pipe is exposed. Water and sediment enter through the drainage pipe and then slowly settle in the collection bucket in the measuring box. By measuring the mass of the collection bucket in real time, the increase in sediment per unit time can be obtained.

[0004] For the existing bed load measuring instruments, since the drainage pipes arranged thereon are integrated and non-adjustable, in the actual measurement process, in order to obtain more and more comprehensive measurement data, for the same measurement area, a plurality of bed load measuring instruments with different inner diameters of drainage pipes are generally installed. When a plurality of bed load measuring instruments are installed and used underwater at the same time, the following problems will arise: due to the differences in the structure of the bed load measuring instruments themselves and the factors of the installation positions, the flow conditions of the water passing through are different, which can easily cause deviations in the measurement results; at the same time, in the actual installation process, the installation of a plurality of bed load measuring instruments is difficult to operate, and the workload of the relevant staff is heavy. Summary of the invention

[0005] The purpose of the present invention is to provide a bed load measuring device for water conservancy and hydrological measurement with a simple structure and reasonable design in order to solve the above problems.

[0006] The present invention solves the above-mentioned technical problems through the following technical solutions:

[0007] A bed load measuring device for water conservancy and hydrological measurement, comprising: an external drainage pipe and a measuring box, the measuring box is connected to the bottom of the external drainage pipe, a drainage bucket is fixedly installed at the bottom of the external drainage pipe, the bottom of the drainage bucket extends to the upper end of the measuring box, a measuring mechanism is arranged in the measuring box, a drainage mechanism is arranged on the external drainage pipe, the drainage mechanism comprises an internal drainage pipe and a tension component, the internal drainage pipe is movably arranged in the external drainage pipe, an opening is arranged at the bottom of the internal drainage pipe, the opening is aligned with the top of the drainage bucket, the internal drainage pipe is composed of four connecting monomers, and a sealing member is installed between two adjacent connecting monomers, the sealing member is elastic, and the connecting monomer is slidably connected to the inner side of the external drainage pipe through a connecting member;

[0008] The pulling component is connected to the inner drainage pipe and is used to pull the inner drainage pipe to expand outward. The sealing component adapts to the elongation, and the size of the inner drainage pipe changes to meet the use requirements of different measurement sizes.

[0009] As a further optimization scheme of the present invention, the connecting member includes a limiting rod and a return spring, the outer side of the connecting unit is slidably connected to the external drainage pipe through the limiting rod, the return spring is sleeved on the outer side of the limiting rod, and the two ends of the return spring are respectively fixedly connected to the inner side of the connecting unit and the external drainage pipe.

[0010] As a further optimization scheme of the present invention, the pulling component includes two traction pulley groups and a power source, the two traction pulley groups are symmetrically installed at the top and bottom of the external drainage pipe, the traction ends of the traction pulley groups are connected to the two connecting monomers on the corresponding sides, and the power source is used to drive the two traction pulley groups to start synchronously.

[0011] As a further optimization scheme of the present invention, the traction pulley group includes a winding wheel and two traction pulleys, the winding wheel is fixedly installed on the outside of the external drainage pipe, the two traction pulleys are symmetrically distributed on both sides of the winding wheel, the fixed end of the traction pulley is fixedly connected to the outside of the external drainage pipe, two traction ropes are wound around the outside of the winding wheel, the ends of the traction ropes are respectively fixedly connected to the outside of the connecting monomer on the corresponding side, and the outside of the traction rope passes through the wheel groove of the traction pulley.

[0012] As a further optimization scheme of the present invention, the power source includes a cylinder, two tooth plates and two first gears. The cylinder is fixedly installed on the outside of the external drainage pipe, and the two first gears are symmetrically slidably installed on the top and bottom of the external drainage pipe, and one end of the two tooth plates is fixedly connected to the telescopic end of the cylinder, and the two first gears are fixedly installed on the rotating end of the winding wheel on the corresponding side, and the first gear is meshed with the tooth plate.

[0013] As a further optimization scheme of the present invention, the drainage mechanism also includes a cleaning component, which is used to perform linear scraping cleaning on the inner wall of the expanded internal drainage pipe. The cleaning component includes a scraping body and a driving source. The scraping body is connected to the driving source, and the driving source is used to drive the scraping body to move linearly along the inner side of the internal drainage pipe.

[0014] As a further optimization scheme of the present invention, the scraper body is a rectangular frame, the rectangular frame is vertically attached to the water outlet end of the outer drainage pipe, the inner diameter of the rectangular frame is adapted to the inner diameter of the inner drainage pipe expanded to the maximum measurement state, the outer diameter of the rectangular frame is adapted to the inner diameter of the inner drainage pipe expanded to the cleaning state, and sliders are fixedly installed at both ends of the rectangular frame, and one end of the slider is slidably connected to the inner side wall of the outer drainage pipe;

[0015] The driving source includes a driving motor and a screw rod, wherein the driving motor is fixedly mounted at the end of the external drainage pipe, one end of the screw rod is fixedly connected to the rotating end of the driving motor, and the other end is rotatably connected to the inner wall of the external drainage pipe, and one of the sliders is threadedly connected to the outer side of the screw rod.

[0016] As a further optimization scheme of the present invention, the connecting monomer is an L-shaped plate structure, and the L-shaped plate structure includes a first movable plate, a second movable plate, a pressure block and an extrusion block. The first movable plate is slidingly connected to the end of the second movable plate, and a tension spring is fixedly installed between the first movable plate and the second movable plate. The pressure block is fixedly installed on the outer side of the second movable plate, and the extrusion block is fixedly installed on the inner side of the external drainage duct. The extrusion block is used to generate downward pressure on the pressure block during movement.

[0017] As a further optimization scheme of the present invention, an auxiliary cleaning part is provided on one side of the scraping body, and the auxiliary cleaning part includes a filter part and a connecting driving source. The filter part includes two folded filters, and the two folded filters are symmetrically slidably installed on the outside of the scraping body. The connecting driving source is respectively connected to the top of the two folded filters for driving the two folded filters to unfold and fold.

[0018] As a further optimization scheme of the present invention, the connecting driving source includes a rotating rod, a second gear, a third gear and two connecting racks, one end of the rotating rod is fixedly connected to one side of the first gear, the second gear is fixedly sleeved on the end of the rotating rod, the third gear is rotatably installed on the top of the external drainage pipe, the top of the third gear is meshed with the bottom of the second gear, the connecting rack is slidably installed at one end of the external drainage pipe, the third gear is respectively meshed with the two connecting racks, a docking groove is provided on the top of the folding filter, and the bottom of the connecting rack is movably engaged in the docking groove.

[0019] The beneficial effects of the present invention are as follows: the present invention uses a drainage mechanism as a water flow channel, wherein an inner drainage pipe composed of four connected monomers is provided as the water flow channel, and is used in conjunction with a tension component to drive the inner drainage pipe to expand, thereby realizing the function of automatically adjusting the inner diameter size of the inner drainage pipe, so that it can perform measurement operations of different measurement areas on the same measurement area, changing the measurement method of using multiple bed load measuring devices, which is conducive to improving the measurement data deviation problem caused by the differences between different bed load measuring devices, and simplifying the measurement operation steps, reducing the workload of the staff, and being more convenient in use;

[0020] By setting up a cleaning component, the adsorbent on the inner wall of the inner drainage pipe can be automatically cleaned, which is beneficial to reduce the obstruction caused by the adsorbent to the sediment in the water flow, allowing the water flow to pass naturally, so as to achieve the purpose of improving the measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a bed load measuring device for water conservancy and hydrological measurement provided by the present invention;

[0022] Figure 2 It is a schematic diagram of the internal structure of a bed load measuring device for water conservancy and hydrological measurement provided by the present invention;

[0023] Figure 3 The present invention Figure 2 The enlarged schematic diagram of the middle A part;

[0024] Figure 4 It is a cross-sectional view of a bed load measuring device for water conservancy and hydrological measurement provided by the present invention;

[0025] Figure 5 It is a structural schematic diagram of a drainage mechanism in a bed load measuring device for water conservancy and hydrological measurement provided by the present invention;

[0026] Figure 6 It is a structural schematic diagram of a cleaning component in a bed load measuring device for water conservancy and hydrological measurement provided by the present invention;

[0027] Figure 7 It is a structural schematic diagram of a local position of a bed load measuring device for water conservancy and hydrological measurement provided by the present invention;

[0028] Figure 8 The present invention provides a schematic diagram of the structure between a cleaning component and an auxiliary cleaning component in a bed load measuring device for water conservancy and hydrological measurement.

[0029] In the figure: 1, external drainage pipe; 2, measuring box; 3, drainage bucket; 4, measuring mechanism; 41, collecting bucket; 42, pressure sensor; 43, sand pump; 5, drainage mechanism; 51, internal drainage pipe; 511, first movable plate; 512, second movable plate; 513, pressure block; 514, extrusion block; 515, tension spring; 52, tension component; 521, winding wheel; 522, traction pulley; 523, traction rope; 5 24. Cylinder; 525. Tooth plate; 526. First gear; 53. Cleaning component; 531. Scraper; 532. Slider; 533. Driving motor; 534. Screw; 535. Folding filter; 536. Rotating rod; 537. Second gear; 538. Third gear; 539. Connecting rack; 5310. Docking groove; 54. Opening; 55. Seal; 56. Connecting piece; 561. Limit rod; 562. Return spring. DETAILED DESCRIPTION

[0030] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Each example may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples.

[0031] like Figure 1 to Figure 2As shown, a bed load measuring device for water conservancy and hydrological measurement comprises: an external drainage pipe 1 and a measuring box 2, the measuring box 2 is connected to the bottom of the external drainage pipe 1, a drainage bucket 3 is fixedly installed at the bottom of the external drainage pipe 1, the bottom of the drainage bucket 3 extends to the upper end of the measuring box 2, and a measuring mechanism 4 is arranged in the measuring box 2, the measuring mechanism 4 comprises a collecting bucket 41, a pressure sensor 42 and a sand pump 43, the pressure sensor 42 is installed at the bottom of the collecting bucket 41, the input end of the sand pump 43 is connected to the inside of the collecting bucket 41 through a pipeline, and the output end is connected to the sand discharge pipe. A drainage mechanism 5 is arranged on the outer drainage pipe 1, and the drainage mechanism 5 includes an inner drainage pipe 51 and a tension component 52. The inner drainage pipe 51 is movably arranged in the outer drainage pipe 1. An opening 54 is arranged at the bottom of the inner drainage pipe 51, and the opening 54 is aligned with the top of the collecting bucket 41. The inner drainage pipe 51 is composed of four connecting monomers, and a seal 55 is installed in the middle of two adjacent connecting monomers. The seal 55 is elastic and can be made of rubber material. The connecting monomer is slidably connected to the inner side of the outer drainage pipe 1 through a connector 56; the tension component 52 is connected to the inner drainage pipe 51, and is used to pull the inner drainage pipe 51 to expand outward, and adapt to the elongation through the seal 55, so that the inside of the inner drainage pipe 51 remains in an integrated state, and the size of the inner drainage pipe 51 changes, which is used for use requirements of different measurement sizes.

[0032] When measuring, water flows in from the inner drainage pipe 51, and when it flows to the opening 54, the silt under the water flows enters the opening 54 under the action of gravity, passes through the drainage bucket 3 and finally settles in the collecting bucket 41. The mass change data of the collecting bucket 41 is monitored in real time by the pressure sensor 42. When the silt in the collecting bucket 41 reaches the maximum carrying capacity, the sand pump 43 starts to start and extracts the silt in the collecting bucket 41. At this time, the measuring mechanism 4 stops measuring, and the pressure data fed back in real time by the pressure sensor 42 is used to determine whether the silt in the collecting bucket 41 has been completely extracted. After measuring for a period of time, when it is necessary to adjust the inner diameter size of the inner drainage pipe 51 to adjust the water flow entry area, the four connecting monomers are driven to expand outward at the same time by the tension component 52. After reaching the set size, the tension component 52 stops moving, and the connecting monomers stop moving. At this time, the inner diameter size of the inner drainage pipe 51 changes, and the water flow entry area also changes.

[0033] In the drainage mechanism 5 of the present invention, the present invention sets a drainage mechanism 51 as a water flow channel, wherein an internal drainage pipe 51 composed of four connected monomers is set as a water flow channel, and used in conjunction with a tension component 52 to drive the internal drainage pipe 51 to expand, thereby realizing the function of automatic adjustment of the inner diameter size of the internal drainage pipe 51, so that it can perform measurement operations of different measurement areas on the same measurement area, changing the measurement method of using multiple bed load meters, which is beneficial to improving the measurement data deviation problem caused by differences between different bed load meters, and simplifying the measurement operation steps, reducing the workload of the staff, and being more convenient in use.

[0034] Please refer to Figure 2 and Figure 3 As an embodiment of the present invention, the connecting member 56 includes two limiting rods 561 and two return springs 562. The two limiting rods 561 are symmetrically distributed at both ends of the connecting unit. The outer side of the connecting unit is slidably connected to the external drainage pipe 1 through the limiting rods 561. The return spring 562 is sleeved on the outer side of the limiting rods 561. The two ends of the return spring 562 are fixedly connected to the inner side of the connecting unit and the external drainage pipe 1 respectively.

[0035] The use process of the connecting piece 56 is as follows: when the internal drainage pipe 51 is expanded, the four connecting monomers are pulled to move respectively by the pulling component 52, so that the limit rod 561 extends outward synchronously with the connecting monomer, and the reset spring 562 is squeezed and contracted synchronously by the connecting monomer. After the connecting monomer reaches the set position, it stops moving. When the connecting monomer is reset, it moves and resets synchronously with the pulling component 52 with the help of the elastic force of the reset spring 562.

[0036] Please refer to Figure 4 and Figure 5As an embodiment of the present invention, the tension component 52 includes two traction pulley groups and a power source. The two traction pulley groups are symmetrically installed at the top and bottom of the external drainage pipe 1. The traction ends of the traction pulley groups are connected to the two connecting monomers on the corresponding sides. The power source is used to drive the two traction pulley groups to start synchronously. The traction pulley group includes a winding wheel 521 and two traction pulleys 522. The winding wheel 521 is fixedly installed on the outside of the external drainage pipe 1. The two traction pulleys 522 are symmetrically distributed on both sides of the winding wheel 521. The fixed ends of the traction pulleys 522 are fixedly connected to the outside of the external drainage pipe 1. Two traction ropes 523 are wound around the outside of the winding wheel 521. The ends of the traction ropes 523 are respectively fixedly connected to the outside of the connecting monomers on the corresponding sides. The outside of the traction ropes 523 passes through the wheel groove of the traction pulley 522. The power source includes a cylinder 524, two tooth plates 525 and two first gears 526. The cylinder 524 is fixedly installed on the outside of the external drainage pipe 1. The cylinder 524 is waterproofed so that it can be used normally underwater. The two first gears 526 are symmetrically slidably installed on the top and bottom of the external drainage pipe 1. The two tooth plates 525 are symmetrically slidably installed on the top and bottom of the external drainage pipe 1, and one end of the two tooth plates 525 is fixedly connected to the telescopic end of the cylinder 524. The two first gears 526 are fixedly installed on the rotating end of the winding wheel 521 on the corresponding side, and the first gears 526 are meshed with the tooth plates 525.

[0037] When the pulling component 52 is in use, the cylinder 524 extends, which can drive the two tooth plates 525 to slide on the outside of the external drainage pipe 1, and the first gear 526 rotates synchronously with the movement of the tooth plate 525, thereby driving the winding wheel 521 to rotate. Through the rotation of the winding wheel 521, the traction rope 523 can be wound, and finally the traction rope 523 pulls the connecting monomer to move. After reaching the maximum expansion position of the inner drainage pipe 51, the cylinder 524 stops extending. Under the action of the traction and telescopic tension, the inner drainage pipe 51 maintains a stable expansion state. After the inner drainage pipe 51 is cleaned, the cylinder 524 contracts, so that the connecting rope is gradually lengthened, and under the elastic force of the reset spring 562, the inner drainage pipe 51 is reset.

[0038] Please refer to Figure 1 and Figure 6As an embodiment of the present invention, since the inner drainage pipe is placed in the water flow for a long time, the suspended matter in the water will be adsorbed on the wall of the inner drainage pipe. If the amount of these suspended matter is too much, it will affect the normal flow of water, and then cause the measurement accuracy to deviate. Therefore, in order to solve this problem, the present invention further provides a cleaning component 53, specifically: the drainage mechanism 5 also includes a cleaning component 53, the cleaning component 53 is used to perform a linear scraping cleaning on the inner wall of the expanded inner drainage pipe 51, the cleaning component 53 is arranged at the water outlet end of the outer drainage pipe 1, the cleaning component 53 includes a scraper 531 and a driving source, the scraper 531 is connected to the driving source, and the driving source is used to drive the scraper 531 to move linearly along the inner side of the inner drainage pipe 51. The rectangular frame is vertically fitted on the water outlet end of the external drainage pipe 1, the inner diameter of the rectangular frame is adapted to the inner diameter of the internal drainage pipe 51 expanded to the maximum measuring state, the outer diameter of the rectangular frame is adapted to the inner diameter of the internal drainage pipe 51 expanded to the cleaning state, sliders 532 are fixedly installed at both ends of the rectangular frame, one end of the slider 532 is slidably connected to the inner wall of the external drainage pipe 1, the height of the slider 532 is less than or equal to the gap after the two connecting monomers at the upper and lower positions are separated, so as to ensure that the scraper 531 can smoothly enter the internal drainage pipe 51; the driving source includes a driving motor 533 and a screw rod 534, the driving motor 533 is fixedly installed at the end of the external drainage pipe 1, a waterproof cover is installed on the outside of the driving motor 533, so that it can operate normally underwater, one end of the screw rod 534 is fixedly connected to the rotating end of the driving motor 533, and the other end is rotatably connected to the inner wall of the external drainage pipe 1, and one of the sliders 532 is threadedly connected to the outer side of the screw rod 534.

[0039] When the cleaning component 53 is in use, it is necessary to first adjust the inner drainage pipe 51 to the cleaning state, that is, drive the inner drainage pipe 51 to expand through the tension component 52, and expand it to the maximum state. It should be noted that when the inner drainage pipe 51 is in the cleaning state, its inner diameter size is larger than the maximum measurement size. After the inner drainage pipe 51 reaches the cleaning state, at this time, by rotating the driving motor 533, the screw rod 534 can be driven to rotate synchronously. By rotating the screw rod 534, the scraper 531 can be driven to move horizontally along the inside of the inner drainage pipe 51. After the scraper 531 enters the inner drainage pipe 51, its outer side is aligned with the inner side of the inner drainage pipe 51. The scraper body 531 slides in contact with the inner wall of the inner drainage pipe 51, and the scraped adsorbent follows the water flow and eventually flows out of the inner drainage pipe 51. When the scraper body 531 moves to the water inlet end of the inner drainage pipe 51, the motor 533 is driven to rotate in the opposite direction, so that the scraper body 531 can move in the opposite direction and continue to scrape and clean the inner wall of the inner drainage pipe 51. The scraping of the scraper body 531 can be adjusted according to actual usage requirements to ensure that the inner wall of the inner drainage pipe 51 is cleaned. After cleaning, the scraper body 531 moves out of the inner drainage pipe 51, and the inner drainage pipe 51 shrinks.

[0040] The present invention can scrape and clean the suspended matter adsorbed on the inner wall of the inner drainage pipe 51 by setting a cleaning component 53, thereby reducing the obstruction of the adsorbed matter to the sediment, so as to achieve the purpose of improving the measurement accuracy; at the same time, by setting the scraper 531 into a rectangular frame structure, in addition to being able to adapt to the inner diameter shape of the inner drainage pipe 51, it has a smaller impact on the internal water flow of the inner drainage pipe 51 during sliding cleaning. After the cleaning is completed, the water flow recovers faster, thereby shortening the cleaning waiting time; and by vertically fitting the rectangular frame at the water outlet end of the outer drainage pipe 1, it can be well hidden when not in use, that is, it will not affect the flow of water, and it is also beneficial to improve the problem of suspended matter adsorbed on the outside of the rectangular frame and causing pollution. Therefore, the cleaning component 53 can well match the state change of the inner drainage pipe 51 and the actual external use environment.

[0041] Please refer to Figure 2 and Figure 3As an embodiment of the present invention, an implementation method of a connecting monomer is disclosed, specifically: the connecting monomer is an L-shaped plate structure, the L-shaped plate structure includes a first movable plate 511, a second movable plate 512, a pressure block 513 and an extrusion block 514, the first movable plate 511 is slidably connected to the end of the second movable plate 512, a tension spring 515 is fixedly installed between the first movable plate 511 and the second movable plate 512, the pressure block 513 is fixedly installed on the outer side of the second movable plate 512, the extrusion block 514 is fixedly installed on the inner side of the external drainage pipe 1, and the extrusion block 514 is used to generate downward pressure on the pressure block 513 during movement.

[0042] The use process of the L-shaped plate structure is as follows: when cleaning the inner wall of the inner drainage pipe 51, the first movable plate 511, the second movable plate 512 and the limit rod 561 are driven together to approach the inner wall of the outer drainage pipe 1 through the tension component 52, and the reset spring 562 is squeezed to contract. At this time, the four connecting monomers are gradually separated, so that the inner diameter of the inner drainage pipe 51 is gradually expanded. After the inner drainage pipe 51 reaches the maximum measurement size, the pressure block 513 is just in contact with the extrusion block 514. As the inner drainage pipe 51 continues to expand, the extrusion block 514 begins to generate downward pressure on the pressure block 513, driving the second movable plate 512 to move downward and pulling the tension spring 515 until the inner diameter of the inner drainage pipe 51 is reduced. When the diameter expands to a degree that is compatible with the cleaning component 53, the pulling component 52 stops pulling, and the right-angle corner formed by the second movable plate 512 and the first movable plate 511 is pulled apart. After the inner drainage pipe 51 reaches the cleaning state, the second movable plate 512 and the first movable plate 511 stop moving. At this time, the adsorption accumulated at the right-angle corner is directly exposed to the outside, so that the cleaning component 53 can easily clean it up. After the cleaning is completed, the pulling component 52 moves, and under the elastic force of the reset spring 562, the first movable plate 511 and the second movable plate 512 are reset together, and the second movable plate 512 is also fitted with the first movable plate 511 under the elastic force of the connecting spring.

[0043] The present invention sets an L-shaped plate structure as a way of connecting the monomers. By cooperating with the tension component 52, it can not only complete the free expansion action to meet the adjustment action switching of the size of the inner drainage pipe 51, but also further set the pressure block 513 and the extrusion block 514. When the inner drainage pipe 51 is in the expansion and cleaning state, the downward pressure generated by the extrusion block 514 on the pressure block 513 can separate the end of the second movable plate 512 from the first movable plate 511, thereby expanding the right-angle corner between the two, and the adsorbent hidden in the right-angle corner is also directly exposed to the outside, so that the cleaning component 53 can easily clean it up, thereby improving the problem that the adsorbent at the right-angle corner of the inner drainage pipe 51 is difficult to clean. Through the further state change of the connecting monomer, the cleaning difficulty is reduced, and the cleaning effect of the cleaning component 53 is improved.

[0044] Please refer to Figure 7 and Figure 8 As an embodiment of the present invention, in the above scheme, although the cleaning component 53 can scrape off the adsorbed material, it may continue to be adsorbed on the inner wall of other positions of the inner drainage pipe 51 while following the flow of water. Therefore, in order to solve this problem, the present invention further provides an auxiliary cleaning component, specifically: the auxiliary cleaning component includes a connecting drive source and two folded filters 535, the two folded filters 535 are symmetrically slidably installed on the outside of the scraping body 531, and the connecting drive source is respectively connected to the top of the two folded filters 535, and is used to drive the two folded filters 535 to unfold and fold. The connecting driving source includes a rotating rod 536, a second gear 537, a third gear 538 and two connecting racks 539. One end of the rotating rod 536 is fixedly connected to one side of the first gear 526. The second gear 537 is fixedly sleeved on the end of the rotating rod 536. The third gear 538 is rotatably installed on the top of the external drainage pipe 1. The top of the third gear 538 is meshed with the bottom of the second gear 537. The connecting rack 539 is slidably installed at one end of the external drainage pipe 1. The third gear 538 is respectively meshed with the two connecting racks 539. A docking groove 5310 is provided at the top of the folded filter 535. The bottom of the connecting rack 539 is movably clamped in the docking groove 5310. Magnetic blocks are fixedly installed on the opposite sides of the two folded filters 535, and the magnetic poles of the two magnetic blocks are opposite.

[0045] When the auxiliary cleaning part is in use, the tension component 52 drives the inner drainage pipe 51 to expand to the cleaning state. The rotation of the winding wheel 521 can drive the rotating rod 536 to rotate synchronously, and then drive the second gear 537 and the third gear 538 to rotate synchronously, and the two connecting racks 539 follow the rotation of the third gear 538 and move horizontally close to each other, and finally drive the two folded filter screens 535 to unfold and gradually approach each other. After the inner drainage pipe 51 is expanded, the ends of the two folded filter screens 535 are just fitted together, and under the magnetic adsorption of the two magnetic blocks, they are spliced ​​to form a stable vertical filter screen, and then , the scraper body 531 begins to move into the inner drainage pipe 51, so that the connecting rack 539 is separated from the top of the folded filter 535, and the folded filter 535 follows the scraper body 531 to slide in the inner drainage pipe 51, and the fallen adsorbed matter is collected and pushed by the folded filter 535, making it difficult for it to be adsorbed on the inner wall of the inner drainage pipe 51. After cleaning, the folded filter 535 follows the scraper body 531 to move and reset, and the top of the folded filter 535 is connected to the bottom of the connecting rack 539 again. Afterwards, when the inner drainage pipe 51 shrinks, the connecting rack 539 synchronously drives the folded filter 535 to slide, fold and shrink.

[0046] The present invention further arranges an auxiliary cleaning component, which is mainly used to further assist in pushing and collecting the cleaned adsorbed material, so that the adsorbed material can follow the movement of the scraper 531 and be pushed to the outside of the inner drainage pipe 51, which is beneficial to prevent the adsorbed material from continuing to be adsorbed on the inner wall of the inner drainage pipe 51, further improving the cleaning effect of the cleaning component 53. In addition, a connecting driving source is arranged, and through the use of the pulling component 52, the synchronous adaptive changes of the use status of the inner drainage pipe 51 and the auxiliary cleaning component can be achieved.

[0047] The above describes an embodiment of the present embodiment, but the present embodiment is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present embodiment, ordinary technicians in this field can also make many forms, all of which are within the protection of the present embodiment.

Claims

1. A bed load measuring device for water conservancy and hydrological measurement, comprising: An external drainage pipe (1) and a measuring box (2), the measuring box (2) being in communication with the bottom of the external drainage pipe (1), a drainage bucket (3) being fixedly mounted on the bottom of the external drainage pipe (1), the bottom of the drainage bucket (3) extending to the upper end of the measuring box (2), a measuring mechanism (4) being arranged in the measuring box (2), characterized in that a drainage mechanism (5) is arranged on the external drainage pipe (1), the drainage mechanism (5) comprising an internal drainage pipe (51) and a tension component (52), The inner drainage pipe (51) is movably arranged in the outer drainage pipe (1); an opening (54) is provided at the bottom of the inner drainage pipe (51); the opening (54) is aligned with the top of the drainage bucket (3); the inner drainage pipe (51) is composed of four connecting monomers, and a sealing member (55) is installed between two adjacent connecting monomers; the sealing member (55) is elastic; the connecting monomers are slidably connected to the inner side of the outer drainage pipe (1) via a connecting member (56); The pulling component (52) is connected to the inner drainage pipe (51) and is used to pull the inner drainage pipe (51) to expand outwards. The sealing component (55) adapts to the extension and the size of the inner drainage pipe (51) changes, so as to meet the use requirements of different measurement sizes. The connecting member (56) comprises a limiting rod (561) and a return spring (562); the outer side of the connecting unit is slidably connected to the external drainage pipe (1) via the limiting rod (561); the return spring (562) is sleeved on the outer side of the limiting rod (561); and the two ends of the return spring (562) are respectively fixedly connected to the inner side of the connecting unit and the external drainage pipe (1); The pulling component (52) comprises two traction pulley blocks and a power source. The two traction pulley blocks are symmetrically mounted at the top and bottom of the external drainage pipe (1). The traction ends of the traction pulley blocks are connected to the two connecting monomers on the corresponding sides. The power source is used to drive the two traction pulley blocks to start synchronously.

2. A bed load measuring device for water conservancy and hydrological measurement according to claim 1, characterized in that: The traction pulley assembly comprises a winding wheel (521) and two traction pulleys (522); the winding wheel (521) is fixedly mounted on the outside of the external drainage pipe (1); the two traction pulleys (522) are symmetrically distributed on both sides of the winding wheel (521); a fixed end of the traction pulley (522) is fixedly connected to the outside of the external drainage pipe (1); two traction ropes (523) are wound around the outside of the winding wheel (521); ends of the traction ropes (523) are respectively fixedly connected to the outside of the connecting monomer on the corresponding side; and the outside of the traction ropes (523) passes through the wheel groove of the traction pulley (522).

3. A bed load measuring device for water conservancy and hydrological measurement according to claim 2, characterized in that: The power source comprises a cylinder (524), two tooth plates (525) and two first gears (526); the cylinder (524) is fixedly mounted on the outside of the external drainage pipe (1); the two first gears (526) are symmetrically slidably mounted on the top and bottom of the external drainage pipe (1) in an up-and-down manner; one end of the two tooth plates (525) is fixedly connected to the telescopic end of the cylinder (524); the two first gears (526) are fixedly mounted on the rotating ends of the winding wheel (521) on the corresponding sides; and the first gears (526) are meshed with the tooth plates (525).

4. A bed load measuring device for water conservancy and hydrological measurement according to claim 3, characterized in that: The drainage mechanism (5) further comprises a cleaning component (53), the cleaning component (53) being used to perform linear scraping cleaning on the inner wall of the expanded inner drainage pipe (51), the cleaning component (53) comprising a scraping body (531) and a driving source, the scraping body (531) being connected to the driving source, the driving source being used to drive the scraping body (531) to perform linear motion along the inner side of the inner drainage pipe (51).

5. A bed load measuring device for water conservancy and hydrological measurement according to claim 4, characterized in that: The scraper body (531) is a rectangular frame body, the rectangular frame body is vertically attached to the water outlet end of the external drainage pipe (1), the inner diameter of the rectangular frame body is compatible with the inner diameter of the internal drainage pipe (51) when expanded to the maximum measurement state, and the outer diameter of the rectangular frame body is compatible with the inner diameter of the internal drainage pipe (51) when expanded to the cleaning state, and sliders (532) are fixedly mounted at both ends of the rectangular frame body, and one end of the slider (532) is slidably connected to the inner side wall of the external drainage pipe (1); The driving source comprises a driving motor (533) and a screw rod (534); the driving motor (533) is fixedly mounted at the end of the external drainage pipe (1); one end of the screw rod (534) is fixedly connected to the rotating end of the driving motor (533); the other end is rotatably connected to the inner wall of the external drainage pipe (1); and one of the sliders (532) is threadedly connected to the outer side of the screw rod (534).

6. A bed load measuring device for water conservancy and hydrological measurement according to claim 5, characterized in that: The connecting monomer is an L-shaped plate structure, which comprises a first movable plate (511), a second movable plate (512), a pressure block (513) and an extrusion block (514); the first movable plate (511) is slidably connected to the end of the second movable plate (512); a tension spring (515) is fixedly installed between the first movable plate (511) and the second movable plate (512); the pressure block (513) is fixedly installed on the outer side of the second movable plate (512); the extrusion block (514) is fixedly installed on the inner side of the external drainage pipe (1); and the extrusion block (514) is used to generate downward pressure on the pressure block (513) during movement.

7. A bed load measuring device for water conservancy and hydrological measurement according to claim 6, characterized in that: An auxiliary cleaning part is provided on one side of the scraping body (531), the auxiliary cleaning part comprising a connecting driving source and two folding filters (535), the two folding filters (535) being symmetrically slidably mounted on the outside of the scraping body (531), the connecting driving source being respectively connected to the tops of the two folding filters (535) for driving the two folding filters (535) to unfold and fold.

8. A bed load measuring device for water conservancy and hydrological measurement according to claim 7, characterized in that: The connecting driving source comprises a rotating rod (536), a second gear (537), a third gear (538) and two connecting racks (539); one end of the rotating rod (536) is fixedly connected to one side of the first gear (526); the second gear (537) is fixedly sleeved on the end of the rotating rod (536); the third gear (538) is rotatably mounted on the top of the external drainage pipe (1); the top of the third gear (538) is meshed with the bottom of the second gear (537); the connecting rack (539) is slidably mounted on one end of the external drainage pipe (1); the third gear (538) is respectively meshed with the two connecting racks (539); a docking groove (5310) is provided at the top of the folded filter (535); and the bottom of the connecting rack (539) is movably engaged in the docking groove (5310).

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