Motorized and portable box type hydrological emergency flow measurement cableway and rapid erection method thereof

Abstract

The invention relates to a mobile and portable box type hydrological emergency flow measurement cableway and a rapid erection method thereof, and solves the problems that the existing hydrological emergency flow measurement cableway is insufficient in maneuverability and portability, and the measurement opportunity may be delayed. The device comprises a box body, a winding drum base is arranged at the position, close to one end, in the box body, a main winding drum and an auxiliary winding drum are coaxially arranged on the winding drum base, the shaft end of a main winding drum shaft and the shaft end of an auxiliary winding drum shaft are aligned and provided with detachable couplings, the same steel wire rope is wound around the main winding drum and the auxiliary winding drum, and one end of the steel wire rope is positively wound around the main winding drum; the other end of the steel wire rope is reversely wound on the auxiliary winding drum, the middle section of the steel wire rope is sleeved with a traction wheel, and the traction wheel is fixed on the opposite bank of the river channel; two directional wheels are installed on the top of the end wall of the end, corresponding to the winding drum base, of the box body, and the two sections, extending out of the main winding drum and the auxiliary winding drum, of the steel wire rope are erected on the directional wheels respectively. The hydrological emergency flow measurement cableway and components thereof are integrated in one box body, the main winding drum shaft and the auxiliary winding drum shaft can be mutually locked or separated through movement of the coupler, the hydrological cableway is rapidly erected, the steel wire rope is tightened, and the steel wire rope runs back and forth across a river.

Description

Technical Field

[0001] The invention belongs to the field of hydrological testing equipment, and relates to a hydrological emergency mobile testing equipment, in particular to a mobile and portable box-type hydrological emergency flow measurement cableway and a rapid erection method thereof. Background Art

[0002] Hydrological emergency testing is an important means to timely grasp river flood information and prevent and resolve flood disaster risks. In order to grasp flood flow information in a timely manner, it is generally necessary to carry out river crossing tests on the river section to be tested. Due to the uncertainty of the time and location of the flood, the river section to be tested may not have hydrological river crossing facilities. Usually, bridges and other water-passing structures can be used to cross the river. There are two disadvantages to the method of river crossing tests with the help of bridges and other water-passing structures. First, it is not necessarily possible to find highly suitable bridges and other water-passing structures on all test river sections. Second, when the flood water flow velocity is large and the test equipment is a navigation-type ADCP, the ADCP is subject to greater water flow resistance in the downstream direction in the water, and it often requires the cooperation of multiple people to pull it, which consumes a lot of physical strength and poses safety hazards.

[0003] Therefore, when no bridge can be found or the water flow rate is high, setting up a hydrological emergency flow measurement cableway to cross the river is a safe and labor-saving method. At present, there are many types of hydrological emergency flow measurement cableways, which can be summarized as follows: First, the mobility is not high. It is generally necessary to set up a cableway bracket to carry the river-crossing cable. The cableway bracket generally requires civil engineering or underground installation. Some of them need to be equipped with inclined cables to improve stability. The river-crossing cable needs to be customized to a specific length according to the width of the river, which is not conducive to multiple sections of reuse; second, the lack of portability. The hydrological cableways set up by traditional methods are often large in size and have many scattered parts. They need to be processed and assembled on site, and the installation, disassembly, and transportation are cumbersome and time-consuming.

[0004] Comprehensive analysis shows that the existing hydrological emergency flow measurement cableways have shortcomings to varying degrees, such as cumbersome installation, disassembly and transportation, and cannot be reused. It is difficult to meet the requirements of hydrological emergency flow measurement for mobility and portability, which affects the normal and efficient implementation of hydrological emergency tests. In the existing technology, there is still a lack of a safe, labor-saving, installation-free, mobile and portable hydrological emergency flow measurement cableway. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that the existing hydrological emergency flow measurement cableway is insufficient in mobility and portability, which may delay the test timing, and to provide a mobile and portable box-type hydrological emergency flow measurement cableway and a rapid installation method thereof. The device has high integration, quick installation, high mobility and good portability, and effectively solves the problem that hydrological emergency tests cannot be carried out when there are no river crossing facilities such as cableways or bridges.

[0006] The technical solution adopted by the present invention to solve its technical problems is: a mobile and portable box-type hydrological emergency flow measurement cableway, including a box, a drum base is arranged in the box at one end, a main drum and an auxiliary drum are coaxially arranged on the drum base, the axial ends of the main drum shaft and the auxiliary drum shaft are aligned and a detachable coupling is provided, the main drum and the auxiliary drum are wound with the same steel wire rope, one end of the steel wire rope is wound on the main drum in the forward direction, and the other end of the steel wire rope is wound on the auxiliary drum in the reverse direction, the middle section of the steel wire rope is sleeved with a traction wheel, and the traction wheel is fixed on the opposite bank of the river; two directional wheels are installed on the top of the end wall of the box corresponding to the drum base, and the two sections of the steel wire rope extending from the main drum and the auxiliary drum are respectively mounted on the directional wheels.

[0007] Preferably, a drive motor is provided at the end of the main reel shaft opposite to the coupling, and a battery for powering the drive motor is also provided in the box. The main reel shaft and the drive motor are driven by a belt, and a detachable hand crank is also provided at the end of the main reel shaft.

[0008] Preferably, a counterweight is provided at the bottom of the inner side of the box, and a ground nail hole is provided at one end of the counterweight away from the reel base, and the ground nail hole penetrates the bottom surface of the box. The counterweight can be arranged as a whole at the bottom of the box, and the reel base is installed on the counterweight to ensure that the counterweight has sufficient volume weight.

[0009] Preferably, the bottom surface of the box body is a non-flat corrugated surface or a spiked surface.

[0010] Preferably, a directional wheel hole is provided at the top of the box end wall where the directional wheel is installed, and the directional wheel and the directional wheel hole are connected with a detachable thread.

[0011] Preferably, an extension rod for raising the running height of the wire rope is provided between the bottom of the directional wheel and the top of the box end wall.

[0012] Preferably, a storage box is provided in the box at one end away from the reel base, and the storage box is used to store the directional wheel and the traction wheel. Ground nails and thin ropes are also stored in the storage box.

[0013] Preferably, the steel wire rope has a scale, and the scale changes color at intervals of a fixed length.

[0014] Preferably, the top surface and one side surface of the box body are integrated flip covers.

[0015] A method for quickly erecting a mobile and portable box-type hydrological emergency current measurement cableway, which is used to erect the above-mentioned hydrological emergency current measurement cableway, is characterized in that it includes the following steps: S1, arrive at the test site, and stabilize the box on one side of the river bank; point the end of the box with the directional wheel hole toward the river section, and drive ground nails into the ground at the ground nail holes to increase the stability of the box when it is pulled by the wire rope; a counterweight block is installed in the box to increase the weight of the box to further increase the stability; when measuring the flow in a river with a relatively turbulent water flow, the stability of the box during operation can be further increased by adding stones to the counterweight block, or driving ground nails into the ground around it to pull the box with a thin rope, or using trees or buildings to pull the box. S2, determine the maximum measurable river width; because the wire rope needs to run the flow measurement equipment from one bank to the other bank, that is, the wire rope needs to run the length of one river width, and the length of the wire rope laid across the river is two river widths; therefore, the length of the wire rope is at least three times the river width, that is, the maximum width of the river section to be measured should not be greater than 1 / 3 of the total length of the wire rope; S3, laying a steel wire rope across the river; installing two directional wheels on two directional wheel holes respectively, rotating the coupling to separate the main drum shaft and the auxiliary drum shaft from each other, pulling out the steel wire rope from the main drum and the auxiliary drum respectively, and the pulled out steel wire rope passes through the directional wheels and is sleeved onto the traction wheel on the opposite bank; when laying across the river, one end of the thin rope is pulled or projected to the opposite bank through a bridge or a shooting gun, and the other end of the thin rope is connected to the steel wire rope and the traction wheel, and the thin rope is pulled to drive the steel wire rope and the traction wheel across the river, and the traction wheel is fixed at a visible position on the opposite bank of the river by anchoring to the ground or binding to a fixed building or tree; when there are embankments or other obstacles on the flow measurement section and it is necessary to increase the running height of the steel wire rope, the height of the directional wheel is increased by installing an extension rod between the directional wheel hole and the directional wheel, thereby increasing the running height of the steel wire rope; S4, tighten the river-crossing wire rope; after the river-crossing wire rope is laid, it is in a loose state, and the excess length of the wire rope needs to be stored to make the wire rope in a taut state; keep the main drum shaft and the auxiliary drum shaft in a state of separation from each other, drive the main drum shaft to reel in the wire rope through a hand crank or a motor, the wire rope is gradually wound on the main drum, the auxiliary drum is in a stationary state, and the length of the river-crossing wire rope is gradually shortened. When the river-crossing wire rope is in a taut state, rotate the coupling to lock the main drum shaft and the auxiliary drum shaft with each other; at this time, the length of the river-crossing wire rope remains unchanged and remains taut, and the cableway laying work is completed; S5, install the flow measuring device; before installing the flow measuring device, first drive the main drum shaft to drive the auxiliary drum shaft to rotate counterclockwise at the same time by a hand crank or a motor, so that the wire rope is completely wrapped around the main drum, so as to fully utilize the length of the wire rope and ensure that the flow measuring device can be moved to the other side; install the flow measuring device on the wire rope extending from the main drum near the river bank, and the flow measuring device can be a walking ADCP or a non-contact flow measuring device such as a radar gun; when the flow measuring device is a walking ADCP, connect the walking ADCP on the water surface to the wire rope through a traction rope; when the flow measuring device is a non-contact flow measuring device such as a radar gun, directly install the non-contact flow measuring device on the wire rope through the installation component; S6, carry out current measurement operation; keep the main drum shaft and the auxiliary drum shaft in a mutually locked state, at this time the auxiliary drum shaft can only move coaxially with the main drum shaft, and the wire rope can be driven to rotate back and forth by a hand crank or a motor to drive the main drum shaft to rotate; when starting the current measurement operation, drive the drum shaft to rotate clockwise, as the wire rope on the main drum gradually rotates out, the wire rope on the auxiliary drum gradually rotates in, the length of the wire rope across the river remains unchanged, and the current measurement equipment installed on the wire rope gradually moves to the opposite bank. When the current measurement equipment reaches the opposite bank, the drum shaft is driven in the reverse direction to rotate, and the current measurement equipment begins to return; the position of the current measurement equipment from the river bank can be accurately determined by the scale on the wire rope, so as to achieve accurate positioning of the test position and improve the test accuracy; S7, storage after the operation is completed; after the flow measurement is completed, the flow measurement equipment is moved to the shore, the flow measurement equipment is removed from the wire rope, the traction wheel and wire rope on the other side of the river are recovered, the coupling is rotated to separate the main drum shaft and the auxiliary drum shaft from each other, and the main drum shaft is driven counterclockwise by a hand crank or a motor to gradually wind the wire rope around the main drum, the auxiliary drum is in a stationary state, and the length of the wire rope across the river is gradually shortened. When the wire rope is completely wound around the main drum, the coupling is rotated to lock the main drum shaft and the auxiliary drum shaft with each other, and the wire rope storage is completed; other components are sorted and put into the box, and after the box cover is closed, the box can be pushed forward by rollers to save labor for handling.

[0016] The present invention integrates the hydrological emergency flow measurement cableway and its components into a box. The main drum shaft and the auxiliary drum shaft can be locked or separated with each other by moving the coupling, so that the hydrological cableway can be quickly erected and the wire rope can be tightened, and the wire rope can be moved back and forth across the river. The present invention adopts box-type integration, which only requires one person to operate during operation. It is assembly-free, easy to transport, and has strong maneuverability and portability. It effectively solves the problem that hydrological emergency tests cannot be carried out when there are no river crossing facilities such as cableways or bridges. It has strong practical value in breaches and small watersheds caused by sudden floods, and greatly improves the timeliness of emergency tests. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below in conjunction with the accompanying drawings.

[0018] Figure 1 It is a schematic diagram of an erection structure of the present invention.

[0019] Figure 2 It is a schematic diagram of a storage state of the present invention.

[0020] In the figure: 1. main reel, 2. auxiliary reel, 3. main reel shaft, 4. auxiliary reel shaft, 5. coupling, 6. reel base, 7. wire rope, 8. drive motor, 9. battery, 10. controller, 11. hand crank, 12. directional wheel, 13. directional wheel hole, 14. extension rod, 15. traction wheel, 16. storage box, 17. counterweight, 18. ground nail, 19. ground nail hole, 20. box. DETAILED DESCRIPTION

[0021] The present invention will be further described below through specific embodiments in conjunction with the accompanying drawings.

[0022] Embodiment: A mobile and portable box-type hydrological emergency flow measurement cableway, such as Figure 1 , 2 The device comprises a box body 20, the top surface and one side surface of the box body are integrated flip covers. When the box body is unfolded, the top surface and one side surface can be operated. The bottom surface of the box body 20 that contacts the ground adopts a non-flat corrugated surface or a spiked surface.

[0023] The bottom surface of the box 20 is provided with a counterweight 17, and a drum base 6 is provided at one end of the box 20. The main drum 1 and the auxiliary drum 2 are coaxially provided on the drum base 6. The shaft ends of the main drum shaft 3 and the auxiliary drum shaft 4 are aligned and provided with a detachable coupling 5. The main drum 1 and the auxiliary drum 2 are wound with the same wire rope 7, one end of the wire rope 7 is wound on the main drum 1 in the forward direction, and the other end of the wire rope is wound on the auxiliary drum 2 in the reverse direction. The middle section of the wire rope 7 is sleeved with a traction wheel 15, and the traction wheel 15 is fixed on the opposite bank of the river. Two directional wheels 12 are installed on the top of the end wall of the box 20 corresponding to the drum base 6, and the two sections of the wire rope 7 extending from the main drum and the auxiliary drum are respectively mounted on the directional wheels 12. The wire rope 7 has a scale, and the scale changes color every fixed length of 5-10 meters, and can be changed alternately by two colors, or can be a variety of different colors. A directional wheel hole 13 is provided at the top of the end wall of the box 20 where the directional wheel is installed, and the directional wheel and the directional wheel hole are connected by a detachable thread. An extension rod 14 for raising the running height of the wire rope can be optionally provided between the bottom of the directional wheel 12 and the top of the end wall of the box. A drive motor 8 is provided at the end of the main drum shaft 3 opposite to the coupling 5, and a battery 9 for powering the drive motor is also provided in the box 20. The main drum shaft and the drive motor are driven by a belt, and a detachable hand crank 11 is also provided at the end of the main drum shaft. A ground nail hole 19 is provided at the end of the counterweight block 17 away from the drum base, and the ground nail hole penetrates the bottom surface of the box 20.

[0024] A multi-layer storage box 16 is arranged at one end of the box body 20 away from the reel base. The storage box is used to store the directional wheel, the traction wheel, and the extension rod. The storage box also stores ground nails and thin ropes.

[0025] The method for quickly erecting the above-mentioned mobile and portable box-type hydrological emergency flow measurement cableway comprises the following steps: S1, arrive at the test site, and stabilize the box on one side of the river bank; point the end of the box with the directional wheel hole toward the river section, and drive ground nails into the ground at the ground nail holes to increase the stability of the box when it is pulled by the wire rope; a counterweight block is installed in the box to increase the weight of the box to further increase the stability; when measuring the flow in a river with a relatively turbulent water flow, the stability of the box during operation can be further increased by adding stones to the counterweight block, or driving ground nails into the ground around it to pull the box with a thin rope, or using trees or buildings to pull the box. S2, determine the maximum measurable river width; because the wire rope needs to run the flow measurement equipment from one bank to the other bank, that is, the wire rope needs to run the length of one river width, and the length of the wire rope laid across the river is two river widths; therefore, the length of the wire rope is at least three times the river width, that is, the maximum width of the river section to be measured should not be greater than 1 / 3 of the total length of the wire rope; S3, laying out the cross-river wire rope; installing two directional wheels on two directional wheel holes respectively, rotating the coupling to separate the main drum shaft from the auxiliary drum shaft, pulling out the wire rope from the main drum and the auxiliary drum respectively, and the pulled out wire rope passes through the directional wheels and is sleeved onto the traction wheel on the opposite bank; when laying out across the river, one end of the thin rope is pulled or projected to the opposite bank through a bridge or a shooting gun, and the other end of the thin rope is connected to the wire rope and the traction wheel, and the thin rope is pulled to drive the wire rope and the traction wheel across the river, and the traction wheel is fixed at a visible position on the opposite bank of the river by anchoring to the ground, binding to fixed buildings or trees, etc.; when there are embankments or other obstructions on the flow measurement section and it is necessary to increase the running height of the wire rope, the height of the directional wheel can be increased by installing an extension rod between the directional wheel hole and the directional wheel, thereby increasing the running height of the wire rope; S4, tighten the river-crossing wire rope; after the river-crossing wire rope is laid, it is in a loose state, and the excess length of the wire rope needs to be stored to make the wire rope in a taut state; keep the main drum shaft and the auxiliary drum shaft in a state of separation from each other, drive the main drum shaft to reel in the wire rope through a hand crank or a motor, the wire rope is gradually wound on the main drum, the auxiliary drum is in a stationary state, and the length of the river-crossing wire rope is gradually shortened. When the river-crossing wire rope is in a taut state, rotate the coupling to lock the main drum shaft and the auxiliary drum shaft with each other; at this time, the length of the river-crossing wire rope remains unchanged and remains taut, and the cableway laying work is completed; S5, install the flow measuring device; before installing the flow measuring device, first drive the main drum shaft to drive the auxiliary drum shaft to rotate counterclockwise at the same time by a hand crank or a motor, so that the wire rope is completely wrapped around the main drum, so as to fully utilize the length of the wire rope and ensure that the flow measuring device can be moved to the other side; install the flow measuring device on the wire rope extending from the main drum near the river bank, and the flow measuring device can be a walking ADCP or a non-contact flow measuring device such as a radar gun; when the flow measuring device is a walking ADCP, connect the walking ADCP on the water surface to the wire rope through a traction rope; when the flow measuring device is a non-contact flow measuring device such as a radar gun, directly install the non-contact flow measuring device on the wire rope through the installation component; S6, carry out current measurement operation; keep the main drum shaft and the auxiliary drum shaft in a mutually locked state, at this time the auxiliary drum shaft can only move coaxially with the main drum shaft, and the wire rope can be driven to rotate back and forth by a hand crank or a motor to drive the main drum shaft to rotate; when starting the current measurement operation, drive the drum shaft to rotate clockwise, as the wire rope on the main drum gradually rotates out, the wire rope on the auxiliary drum gradually rotates in, the length of the wire rope across the river remains unchanged, and the current measurement equipment installed on the wire rope gradually moves to the opposite bank. When the current measurement equipment reaches the opposite bank, the drum shaft is driven in the reverse direction to rotate, and the current measurement equipment begins to return; the position of the current measurement equipment from the river bank can be accurately determined by the scale on the wire rope, so as to achieve accurate positioning of the test position and improve the test accuracy; S7, storage after the operation is completed; after the flow measurement is completed, the flow measurement equipment is moved to the shore, the flow measurement equipment is removed from the wire rope, the traction wheel and wire rope on the other side of the river are recovered, the coupling is rotated to separate the main drum shaft and the auxiliary drum shaft from each other, and the main drum shaft is driven counterclockwise by a hand crank or a motor to gradually wind the wire rope around the main drum, the auxiliary drum is in a stationary state, and the length of the wire rope across the river is gradually shortened. When the wire rope is completely wound around the main drum, the coupling is rotated to lock the main drum shaft and the auxiliary drum shaft with each other, and the wire rope storage is completed; other components are sorted and put into the box, and after the box cover is closed, the box can be pushed forward by rollers to save labor for handling.

Claims

1. A mobile and portable box-type hydrological emergency flow measurement cableway, comprising a box, characterized in that: A drum base is arranged at one end of the box body, and a main drum and an auxiliary drum are coaxially arranged on the drum base, the axial ends of the main drum shaft and the auxiliary drum shaft are aligned and are provided with a detachable coupling, the main drum and the auxiliary drum are wound with the same steel wire rope, one end of the steel wire rope is wound on the main drum in a forward direction, and the other end of the steel wire rope is wound on the auxiliary drum in a reverse direction, and a traction wheel is sleeved on the middle section of the steel wire rope, and the traction wheel is fixed on the opposite bank of the river channel; two directional wheels are installed on the top of the end wall of the box body corresponding to the drum base, and the two sections of the steel wire rope extending from the main drum and the auxiliary drum are respectively mounted on the directional wheels.

2. A mobile and portable box-type hydrological emergency flow measurement cableway according to claim 1, characterized in that: A driving motor is arranged at the end of the main reel shaft opposite to the coupling, and a battery for supplying power to the driving motor is also arranged in the box body. The main reel shaft and the driving motor are driven by a belt, and a detachable hand crank is also arranged at the end of the main reel shaft.

3. A mobile and portable box-type hydrological emergency flow measurement cableway according to claim 1, characterized in that: A counterweight block is arranged at the bottom of the inner side of the box body, and a ground nail hole is opened at one end of the counterweight block away from the reel base, and the ground nail hole penetrates the bottom surface of the box body.

4. A mobile and portable box-type hydrological emergency current measurement cableway according to claim 1, characterized in that: The bottom surface of the box body is a non-flat corrugated surface or a nail-punctured surface.

5. The mobile and portable box-type hydrological emergency flow measurement cableway according to claim 1 is characterized by: A directional wheel hole is provided at the top of the box end wall where the directional wheel is installed, and the directional wheel and the directional wheel hole are connected by detachable threads.

6. The mobile and portable box-type hydrological emergency current measurement cableway according to claim 1 is characterized by: An extension rod for raising the running height of the wire rope is arranged between the bottom of the directional wheel and the top of the box end wall.

7. The mobile and portable box-type hydrological emergency flow measurement cableway according to claim 1 is characterized by: A storage box is arranged at one end of the box body away from the reel base, and the storage box is used to store the directional wheel and the traction wheel. Ground nails and thin ropes are also stored in the storage box.

8. The mobile and portable box-type hydrological emergency flow measurement cableway according to claim 1 is characterized by: The steel wire rope is provided with scales, and the scales change color at intervals of fixed length.

9. The mobile and portable box-type hydrological emergency flow measurement cableway according to claim 1 is characterized by: The top surface and one side surface of the box body are integrated flip covers.

10. A method for quickly erecting a mobile and portable box-type hydrological emergency current measurement cableway, used for erecting a hydrological emergency current measurement cableway according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, arrive at the test site and secure the box on one side of the river bank; The end of the box with the directional wheel hole is facing the river section, and the stability of the box when being pulled by the wire rope is increased by driving ground nails into the ground at the ground nail holes; a counterweight block is installed in the box to increase the weight of the box to further increase the stability; when measuring the flow in a river with a relatively turbulent water flow, the stability of the box during operation can be further increased by adding stones to the counterweight block, driving ground nails into the ground around it and pulling the box with a thin rope, or pulling the box with the help of trees or buildings. S2, determine the maximum measurable river width; because the wire rope needs to run the flow measurement equipment from one bank to the other bank, that is, the wire rope needs to run the length of one river width, and the length of the wire rope laid across the river is two river widths; therefore, the length of the wire rope is at least three times the river width, that is, the maximum width of the river section to be measured should not be greater than 1 / 3 of the total length of the wire rope; S3, laying a steel wire rope across the river; installing two directional wheels on two directional wheel holes respectively, rotating the coupling to separate the main drum shaft and the auxiliary drum shaft from each other, pulling out the steel wire rope from the main drum and the auxiliary drum respectively, and the pulled out steel wire rope passes through the directional wheels and is sleeved onto the traction wheel on the opposite bank; when laying across the river, one end of the thin rope is pulled or projected to the opposite bank through a bridge or a shooting gun, and the other end of the thin rope is connected to the steel wire rope and the traction wheel, and the thin rope is pulled to drive the steel wire rope and the traction wheel across the river, and the traction wheel is fixed at a visible position on the opposite bank of the river by anchoring to the ground or binding to a fixed building or tree; when there are embankments or other obstructions on the flow measurement section and it is necessary to increase the running height of the steel wire rope, the height of the directional wheel is increased by installing an extension rod between the directional wheel hole and the directional wheel, thereby increasing the running height of the steel wire rope; S4, tighten the cross-river wire rope; After the wire rope is laid across the river, it is in a loose state. It is necessary to store the excess length of the wire rope to keep the wire rope in a taut state. Keep the main drum shaft and the auxiliary drum shaft separated from each other, drive the main drum shaft to reel in the wire rope through a hand crank or a motor, and the wire rope is gradually wound around the main drum. The auxiliary drum is in a stationary state, and the length of the wire rope across the river is gradually shortened. When the wire rope across the river is in a taut state, rotate the coupling to lock the main drum shaft and the auxiliary drum shaft with each other. At this time, the length of the wire rope across the river remains unchanged and remains taut, and the cableway laying work is completed. S5, install the flow measuring device; before installing the flow measuring device, first drive the main drum shaft to drive the auxiliary drum shaft to rotate counterclockwise at the same time by a hand crank or a motor, so that the wire rope is completely wrapped around the main drum, so as to fully utilize the length of the wire rope and ensure that the flow measuring device can be moved to the other side; install the flow measuring device on the wire rope extending from the main drum near the river bank, and the flow measuring device is a walking ADCP or a non-contact flow measuring device; when the flow measuring device is a walking ADCP, connect the walking ADCP on the water surface to the wire rope through a traction rope; when the flow measuring device is a non-contact flow measuring device, directly install the non-contact flow measuring device on the wire rope through the installation component; S6, carry out current measurement operation; keep the main drum shaft and the auxiliary drum shaft in a mutually locked state, at this time the auxiliary drum shaft can only move coaxially with the main drum shaft, and the wire rope can be driven to rotate back and forth by a hand crank or a motor to drive the main drum shaft to rotate; when starting the current measurement operation, drive the drum shaft to rotate clockwise, as the wire rope on the main drum gradually rotates out, the wire rope on the auxiliary drum gradually rotates in, the length of the wire rope across the river remains unchanged, and the current measurement equipment installed on the wire rope gradually moves to the opposite bank. When the current measurement equipment reaches the opposite bank, the drum shaft is driven in the reverse direction to rotate, and the current measurement equipment begins to return; the position of the current measurement equipment from the river bank can be accurately determined by the scale on the wire rope, so as to achieve accurate positioning of the test position and improve the test accuracy; S7, storage after the operation is completed; after the flow measurement is completed, the flow measurement equipment is moved to the shore, the flow measurement equipment is removed from the wire rope, the traction wheel and wire rope on the other side of the river are recovered, the coupling is rotated to separate the main drum shaft and the auxiliary drum shaft from each other, and the main drum shaft is driven counterclockwise by a hand crank or a motor, and the wire rope is gradually wound on the main drum, the auxiliary drum is in a stationary state, and the length of the wire rope across the river is gradually shortened. When the wire rope is completely wound on the main drum, the coupling is rotated to lock the main drum shaft and the auxiliary drum shaft with each other, and the wire rope storage is completed; other components are sorted and put into the box, and after the box cover is closed, the box is pushed forward by the rollers.

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