Hydrographic survey device with adjustable detection depth

Abstract

The invention discloses a hydrographic survey device with adjustable detection depth, which comprises an arranged ship body, and a protective cover is mounted on the ship body; a double-shaft motor is mounted in the protective cover, a first output end of the double-shaft motor is connected with a counterweight assembly through a transmission, the counterweight assembly comprises a worm pump mounted at the end of the transmission, a first pipeline is mounted at one end of the worm pump, a valve is mounted on the first pipeline, a first connector is arranged on the first pipeline, and a second connector is arranged on the second pipeline. The first connector is connected with a second connector through a hose, and the second connector is installed at the side end of the balance weight box. According to the hydrographic measurement device with the adjustable detection depth, a valve on a first pipeline is opened, so that water resources are conveyed through a hose connected with a second connector through a first connector, the balance weight of the whole hydrographic measurement device can be conveniently adjusted according to needs, and the problem that a detector is easily influenced by buoyancy force only by moving the detector up and down through a pull rope is solved; and the overall measurement accuracy is improved.

Description

Technical Field

[0001] The invention relates to the technical field related to hydrological measurement, and in particular to a hydrological measurement device with adjustable detection depth. Background Art

[0002] In order to ensure the cleanliness of water resources, it is necessary to test hydrological and water resources, but the existing hydrological measurement devices still have certain defects when used, such as; During use, the existing detection equipment has a single function and can only detect the quality of shallow water. It is not convenient to adjust the detection depth, which not only limits the scope of application of the equipment, but also cannot monitor the vertical distribution of the water body, limiting the ability to observe the long-term trend of hydrological changes; In order to overcome the above defects, prior art 1 (Chinese patent with application number 202311431189.5 and application date 2023-10-31) is a speed and depth measuring rod for hydrological monitoring, which relates to the field of speed and depth measuring technology, including a fixing mechanism, a linkage mechanism is embedded in the internal sliding of the fixing mechanism, and a detection mechanism is fixedly connected to one side of the outer wall of the linkage mechanism. The detection mechanism includes a group of sliders, and a sliding seat is fixedly connected between one side of the outer wall of a group of sliders. A drive groove B is preset inside the sliding seat, and a group of bearings B are fixedly connected inside the drive groove B. In the belt of two drive motors B, Under the action of the movement, the winding roller can be kept rotating inside the two bearings B. When the winding roller is rotating, the steel wire can be retracted and released, thereby driving the depth detector installed at the bottom of the steel wire to move up and down. Through the cooperation of the fixing mechanism, the linkage mechanism and the detection mechanism, the device can be fixed on one side of the outer wall of the bridge through the action of its internal components, and the device can be automatically detected through the external control component, and the depth and flow rate of the hydrology can be detected anytime and anywhere, reducing labor costs, high degree of automation, and improving detection efficiency; There is also prior art 2 (Chinese patent with application number 202011252337.3 and application date 2020-11-11), a water quality detection device with adjustable detection depth and an adjustment method, comprising a bottom plate, the four corners of the bottom of the bottom plate are fixedly connected with legs, the bottom of the legs are movably connected with universal wheels, the top of the bottom plate is fixedly connected with a box, the right side of the inner cavity of the box is fixedly connected with a first motor, the left end of the first motor shaft is fixedly connected with a threaded rod, the left end of the threaded rod is threadedly sleeved with a threaded tube, the left end of the threaded tube passes through the left side of the box, the top of the box is respectively fixedly connected with a controller and a battery, and the bottom plate , legs, universal wheels, a box body, a first motor, a threaded rod, a threaded tube, a controller, a battery, a display screen, a button, a vertical plate, a second motor, a winding wheel, a pull rope, a connecting ring, a fixed box, a vertical tube, a water inlet pipe, a first one-way valve, a water outlet pipe, a second one-way valve, a detection module, a third motor, a turntable, a guide rod, a moving frame, a vertical rod and a piston cooperate to have the advantages of being able to adjust the water quality detection depth, sampling the detected water quality, and being convenient for subsequent research on the samples, and solves the problem that the existing water quality detection device can only detect shallow water quality, is not convenient for adjusting the detection depth, and cannot sample the detected water source, which is not conducive to subsequent research and processing of water quality samples; And prior art 3 (Chinese patent with application number 202420298315.8 and application date 2024-02-19) A hydrological and water resources detection device with adjustable detection depth, comprising a floating plate, a protective box is fixedly connected to the top of the floating plate, a partition is fixedly connected to the inner cavity of the protective box, a battery is fixedly connected to the top of the floating plate and located on the right side of the partition, a winding motor is fixedly connected to the left side of the top of the battery, the output shaft of the winding motor is fixedly connected to a first belt pulley, a networking module is fixedly connected to the right side of the top of the battery, a winding roller is provided in the inner cavity of the protective box and located on the left side of the partition, a second belt pulley is fixedly connected to the front end of the winding roller, the second belt pulley is connected to the first belt pulley through a belt transmission, the third belt pulley drives the screw rod to rotate, the screw rod drives the threaded block to move forward and backward, the threaded block drives the macro camera and the constraint ring to move forward and backward to move the steel cable forward and backward, and the scale on the surface of the steel cable is monitored by the macro camera at the same time, so as to achieve precise control of the upper and lower depths.

[0003] Although the existing technology can adjust the detection depth, during the operation, the detector is moved up and down by pulling a rope to facilitate measurement. The pull rope connection may cause inconsistent measurement depth due to changes in buoyancy, increasing errors. The detector is easily affected by water flow, causing the measuring piece to be unstable in the water, affecting the measurement accuracy.

[0004] In view of the above problems, it is urgently necessary to carry out innovative design based on the original hydrological measuring device with adjustable detection depth. Therefore, we proposed a hydrological measuring device with adjustable detection depth which can solve the above problems well. Summary of the invention

[0005] The purpose of the present invention is to provide a hydrological measuring device with adjustable detection depth, so as to solve the problem proposed in the above-mentioned background technology that the detector on the market is moved up and down by pulling a rope to facilitate measurement, and the pull rope connection may cause inconsistent measurement depth due to changes in buoyancy, increasing errors, and the detector is easily affected by water flow, resulting in instability of the measuring piece in the water, affecting the measurement accuracy.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a hydrological measurement device with adjustable detection depth, comprising a hull, on which a protective cover is installed; A dual-axis motor is installed inside the protective cover, and a first output end of the dual-axis motor is connected to a counterweight assembly through a transmission, and the counterweight assembly includes a worm pump installed at the end of the transmission, and a first pipe is installed at one end of the worm pump, a valve is installed on the first pipe, and a first interface is provided on the first pipe, and the first interface is connected to a second interface through a hose, and the second interface is installed at the side end of the counterweight box; A storage box is provided under the counterweight box, a storage box is provided inside the storage box, a measuring piece is installed inside the storage box, a second pipe is installed at the other end of the worm pump, an auxiliary box is provided at the end of the second pipe, the auxiliary box is installed on the hull, a nozzle is installed at the side end of the auxiliary box, a third pipe is installed at the bottom of the auxiliary box, and water is transported through the worm pump of the counterweight assembly.

[0007] Preferably, the second output end of the dual-axis motor is connected to the first rotating shaft, a support line is installed on the outside of the first rotating shaft, the support line is connected to the counterweight box, a conveying assembly is arranged inside the storage box, and the conveying assembly includes a conveying cylinder installed inside the storage box.

[0008] Preferably, a piston is provided inside the conveying cylinder, a water inlet pipe is installed at the end of the conveying cylinder, the water inlet pipe is connected to the outside of the storage box, an arc cover is provided on the outside of the water inlet pipe, the arc cover is installed on the outside of the storage box, and a first conveying pipe is installed at the end of the conveying cylinder.

[0009] Preferably, the first delivery pipe is connected through the interior of the storage box, a second delivery pipe is installed at the end of the storage box, the second delivery pipe is connected through the interior of the sampling box, and the sampling box is installed inside the storage box.

[0010] Preferably, a driving assembly is provided inside the storage box, and the driving assembly includes a first motor installed inside the storage box, and an output end of the first motor is connected to a first forward and reverse screw rod, and the first forward and reverse screw rod penetrates and is connected inside the movable plate.

[0011] Preferably, the movable plate is connected to the side end of the piston, a guide rod is connected through the interior of the movable plate, the guide rod is installed in the empty slot, and the empty slot is opened at the bottom of the storage box.

[0012] Preferably, a second rotating shaft is installed at the end of the first forward and reverse screw rods, the second rotating shaft is connected to the outside of the storage box, a cleaning rod is installed on the second rotating shaft, and the cleaning rod is located outside the arc cover.

[0013] Preferably, a first driving member is installed on the outer side of the second rotating shaft, a first auxiliary fan is installed on the first driving member, the first auxiliary fan is installed on the bottom of the storage box, and a second auxiliary fan is connected to the first auxiliary fan via a second driving member.

[0014] Preferably, a second motor is installed inside the counterweight box, and a cleaning assembly is connected to the output end of the second motor. The cleaning assembly includes a second forward and reverse screw connected to the output end of the second motor, and the second forward and reverse screw is sleeved on the outside of the support line. A sleeve is sleeved on the outside of the second forward and reverse screw, and a cutting knife is installed on the outside of the sleeve.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the hydrological measuring device with adjustable detection depth opens the valve on the first pipeline, so that water resources are transported through the hose connected to the first interface and the second interface, so that the overall weight can be adjusted as needed, and the problem of being easily affected by buoyancy by simply moving the detector up and down by pulling the rope is reduced, and the accuracy of the overall measurement is improved. The specific contents are as follows: The water source is transported through the worm pump of the counterweight assembly, so that the water resources can be transported to the counterweight box for storage, making it easy to adjust the counterweight as needed, increasing the overall weight and reducing the problem of the detector being easily affected by the water flow and causing instability; The dual-axis motor rotates in the opposite direction, so that the water source inside the counterweight box is transported to the auxiliary box through the second pipe, which not only facilitates the rapid rise of the storage box, but also sprays the water source through the nozzle on the auxiliary box, reducing the problem of inconvenience in using water source caused by more pollutants around the hull; The dual-axis motor drives the support wire to unwind and rewind through the first rotating shaft, making it easy to lift and lower the counterweight box, improving the overall driving efficiency and reducing the problem of increased costs caused by the need to set up more driving components; Turn on the first motor of the driving assembly to rotate the first forward and reverse screws, and the movable plate moves through the cooperation of the guide rod inside the empty slot, so that the piston can move inside the conveying cylinder, thereby detecting water resources at different depths and improving the overall practicality; Turn on the second motor of the cleaning component, and the second motor drives the second forward and reverse screw to rotate, so that the sleeve rotates to drive the cutting knife to rotate, thereby facilitating the removal of debris on the surface of the support line and reducing the problem of debris adhering to the support line causing inconvenience in lifting and lowering. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the protective cover of the present invention; Figure 3 It is a schematic diagram of the overall top view structure of the present invention; Figure 4 This is a schematic diagram of the connection structure between the second pipeline and the auxiliary box of the present invention; Figure 5 This is a schematic diagram of the internal structure of the storage box of the present invention; Figure 6 This is a schematic diagram of the structure of the weight box and the storage box of the present invention; Figure 7 This is a schematic diagram of the internal cross-section structure of the storage box of the present invention; Figure 8 This is a schematic diagram of the connection structure between the first motor and the first forward and reverse screw rods of the present invention; Fig. 9 This is a schematic diagram of the structure after the first forward and reverse screws rotate in the present invention; Fig.10 It is a schematic diagram of the connection structure between the second forward and reverse screws and the sleeve of the present invention.

[0017] In the figure: 1, hull; 2, protective cover; 3, dual-axis motor; 4, transmission; 5, worm pump; 6, first pipeline; 7, valve; 8, first interface; 9, second interface; 10, counterweight box; 11, storage box; 12, storage box; 13, measuring piece; 14, second pipeline; 15, auxiliary box; 16, nozzle; 17, third pipeline; 18, first rotating shaft; 19, support line; 20, conveying cylinder; 21, piston; 22, water inlet pipeline; 2 3. Arc cover; 24. First conveying pipeline; 25. Second conveying pipeline; 26. Sampling box; 27. First motor; 28. First forward and reverse screw; 29. ​​Moving plate; 30. Empty slot; 31. Guide rod; 32. Second rotating shaft; 33. Cleaning rod; 34. First driving member; 35. First auxiliary fan; 36. Second driving member; 37. Second auxiliary fan; 38. Second motor; 39. Second forward and reverse screw; 40. Sleeve; 41. Cutting knife. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0019] In this embodiment, in order to improve the overall measurement accuracy, a counterweight assembly is used to reduce the problem that the detector is easily affected by buoyancy when it is moved up and down by pulling the rope. Figure 1-Figure 6The technical solution shown in the figure includes a hull 1, a protective cover 2 is installed on the hull 1, a dual-axis motor 3 is installed inside the protective cover 2, a first output end of the dual-axis motor 3 is connected to a counterweight assembly through a transmission 4, and the counterweight assembly includes a worm pump 5 installed at the end of the transmission 4, a first pipe 6 is installed at one end of the worm pump 5, a valve 7 is installed on the first pipe 6, a first interface 8 is provided on the first pipe 6, the first interface 8 is connected to a second interface 9 through a hose, and the second interface 9 is installed at the side end of a counterweight box 10, and a storage box 11 is provided under the counterweight box 10, and the storage box 11 is inside A storage box 12 is provided at the bottom, a measuring piece 13 is installed inside the storage box 12, a second pipe 14 is installed at the other end of the worm pump 5, an auxiliary box 15 is provided at the end of the second pipe 14, the auxiliary box 15 is installed on the hull 1, a nozzle 16 is installed at the side end of the auxiliary box 15, and a third pipe 17 is installed at the bottom of the auxiliary box 15. The water source is transported by the worm pump 5 of the counterweight assembly, the hull 1 is moved to the top of the water body to be detected, the double-axis motor 3 inside the protective cover 2 is opened, and the worm pump 5 is driven by the transmission 4 to transport, so that the worm pump 5 can be easily transported through the third pipe 17. The water resource is introduced, and the water resource is transported through the cooperation of the auxiliary box 15 and the second pipe 14, and the valve 7 on the first pipe 6 is opened, so that the water resource is transported through the hose connected to the first interface 8 and the second interface 9, so that the water resource is conveniently transported to the counterweight box 10 for storage, so that the overall counterweight can be adjusted as needed, which not only reduces the problem of being easily affected by buoyancy by only moving the detector up and down by pulling the rope, but also increases the overall weight, reduces the problem of the detector being easily affected by the water flow and causing instability, and improves the accuracy of the overall measurement. At this time, the storage box 11 is convenient for storing the storage box 12, so that the measuring piece 13 is convenient for detecting the water quality conditions at different depths. When the measuring piece 13 needs to be moved up, it can be rotated in the opposite direction by the dual-axis motor 3, so that the water source inside the counterweight box 10 is transported to the auxiliary box 15 through the second pipe 14, which not only facilitates the rapid rise of the storage box 11, but also sprays the water source through the nozzle 16 on the auxiliary box 15, so that the pollutants on the side of the hull 1 are conveniently blown away, and the problem of inconvenience in using the water source caused by more pollutants around the hull 1 is reduced. Example

[0020] In this embodiment, in order to reduce the overall driving cost, a dual-axis motor 3 is used to reduce the problem of increased cost caused by the need to set more driving components. Figure 5-Figure 7As shown, the second output end of the dual-axis motor 3 is connected to the first rotating shaft 18, and a support line 19 is installed on the outside of the first rotating shaft 18, and the support line 19 is connected to the counterweight box 10. A conveying assembly is arranged inside the storage box 11, and the conveying assembly includes a conveying cylinder 20 installed inside the storage box 11, and a piston 21 is arranged inside the conveying cylinder 20. A water inlet pipe 22 is installed at the end of the conveying cylinder 20, and the water inlet pipe 22 is connected to the outside of the storage box 11. An arc cover 23 is arranged on the outside of the water inlet pipe 22, and the arc cover 23 is installed on the outside of the storage box 11. A first conveying pipe 24 is installed at the end of the conveying cylinder 20, and the first conveying pipe 24 is connected to the inside of the storage box 12. A second conveying pipe 25 is installed at the end of the storage box 12, and the second conveying pipe 25 is connected to the inside of the sampling box 26, and the sampling box 26 is installed inside the storage box 11. When the dual-axis motor 3 is in use, the dual-axis The motor 3 drives the support line 19 to unwind and reel through the first rotating shaft 18, so that the counterweight box 10 is convenient to lift and lower, and the overall driving efficiency is improved. It not only reduces the problem of increased cost caused by the need to set up more driving components, but also reduces the problem of reduced overall reeling efficiency caused by manual rotation. The piston 21 is moved inside the conveying cylinder 20, so that the water inlet pipe 22 introduces the water resources required for detection. Since an arc cover 23 is provided on the outside of the water inlet pipe 22, it is convenient for the arc cover 23 to block impurities in the water source, reducing the problem of inconvenience in detection caused by a large number of impurities inside the water resources, and the water resources are transported through the first conveying pipe 24, and the second conveying pipe 25 is used to transmit the detected water resources to the inside of the sampling box 26, which is convenient for later detection operations and water resource sampling operations, thereby improving overall practicality. Example

[0021] In this embodiment, in order to improve the efficiency of the overall drive, a cleaning component is provided for use, the purpose of which is to reduce the problem of debris adhering to the support line 19 causing inconvenience in lifting and lowering. Figure 8 , Fig. 9 and Fig.10As shown, a driving assembly is arranged inside the storage box 11, and the driving assembly includes a first motor 27 installed inside the storage box 11, and the output end of the first motor 27 is connected to a first forward and reverse screw 28, and the first forward and reverse screw 28 is connected through the inside of the moving plate 29, and the moving plate 29 is connected to the side end of the piston 21, and the moving plate 29 is connected through the inside of the moving plate 29. A guide rod 31 is installed inside the empty slot 30, and the empty slot 30 is opened at the bottom of the storage box 11. A second rotating shaft 32 is installed at the end of the first forward and reverse screw 28, and the second rotating shaft 32 is connected through the outside of the storage box 11, and a cleaning Rod 33, cleaning rod 33 is located outside arc cover 23, first driving member 34 is installed outside second rotating shaft 32, first auxiliary fan 35 is installed on first driving member 34, first auxiliary fan 35 is installed on bottom of storage box 11, first auxiliary fan 35 is connected with second auxiliary fan 37 through second driving member 36, second motor 38 is installed inside counterweight box 10, cleaning assembly is connected with output end of second motor 38, cleaning assembly comprises second forward and reverse screw 39 connected with output end of second motor 38, second forward and reverse screw 39 is sleeved on the outside of support line 19, sleeve 4 is sleeved on the outside of second forward and reverse screw 39 0, a cutting knife 41 is installed on the outside of the sleeve 40, the first motor 27 is turned on, so that the first forward and reverse screw 28 rotates, and at this time the movable plate 29 moves through the cooperation of the guide rod 31 inside the empty groove 30, which facilitates the movement of the piston 21 inside the conveying cylinder 20, so that water resources at different depths can be detected, thereby improving the overall practicality, and the first forward and reverse screw 28 is set to drive the second rotating shaft 32 to rotate, which facilitates the cleaning rod 33 to clean the outside of the arc cover 23, reducing the clogging problem caused by the arc cover 23 being affected by the external environment, and improving the overall service life, and the second rotating shaft 32 is During rotation, the first driving member 34 drives the first auxiliary fan 35 to rotate, and drives the second auxiliary fan 37 to rotate through the second driving member 36, so that the overall depth detection rigor is greatly improved, and the problem of the detection being affected by the fast water flow speed is reduced. The second motor 38 is turned on, and the second motor 38 drives the second forward and reverse screw 39 to rotate, so that the sleeve 40 outside the second forward and reverse screw 39 can rotate on its surface, so that the sleeve 40 rotates and drives the cutting knife 41 to rotate, thereby facilitating the removal of debris on the surface of the support line 19 and reducing the problem of debris adhering to the support line 19 causing inconvenience in lifting and lowering.

[0022] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hydrological measurement device with adjustable detection depth, comprising a hull (1) provided, wherein a protective cover (2) is installed on the hull (1); It is characterized in that Also includes: A dual-axis motor (3) is installed inside the protective cover (2); a first output end of the dual-axis motor (3) is connected to a counterweight assembly via a transmission (4); the counterweight assembly comprises a worm pump (5) installed at the end of the transmission (4); a first pipe (6) is installed at one end of the worm pump (5); a valve (7) is installed on the first pipe (6); a first interface (8) is provided on the first pipe (6); the first interface (8) is connected to a second interface (9) via a hose; the second interface (9) is installed at a side end of a counterweight box (10); A storage box (11) is arranged below the counterweight box (10), a storage box (12) is arranged inside the storage box (11), a measuring piece (13) is installed inside the storage box (12), a second pipe (14) is installed at the other end of the worm pump (5), an auxiliary box (15) is arranged at the end of the second pipe (14), the auxiliary box (15) is installed on the hull (1), a nozzle (16) is installed at the side end of the auxiliary box (15), and a third pipe (17) is installed at the bottom of the auxiliary box (15), and water is transported through the worm pump (5) of the counterweight assembly.

2. The hydrological measuring device with adjustable detection depth according to claim 1, characterized in that: The second output end of the dual-axis motor (3) is connected to a first rotating shaft (18), a support line (19) is installed outside the first rotating shaft (18), and the support line (19) is connected to the counterweight box (10). A conveying assembly is arranged inside the storage box (11), and the conveying assembly includes a conveying cylinder (20) installed inside the storage box (11).

3. The hydrological measuring device with adjustable detection depth according to claim 2, characterized in that: A piston (21) is arranged inside the delivery cylinder (20), a water inlet pipe (22) is installed at the end of the delivery cylinder (20), the water inlet pipe (22) penetrates and is connected to the outside of the storage box (11), an arc-shaped cover (23) is arranged on the outside of the water inlet pipe (22), the arc-shaped cover (23) is installed on the outside of the storage box (11), and a first delivery pipe (24) is installed at the end of the delivery cylinder (20).

4. The hydrological measuring device with adjustable detection depth according to claim 3, characterized in that: The first delivery pipe (24) is connected through the interior of the storage box (12); a second delivery pipe (25) is installed at the end of the storage box (12); the second delivery pipe (25) is connected through the interior of a sampling box (26); and the sampling box (26) is installed inside the storage box (11).

5. The hydrological measuring device with adjustable detection depth according to claim 1, characterized in that: A drive assembly is arranged inside the storage box (11), and the drive assembly comprises a first motor (27) installed inside the storage box (11), an output end of the first motor (27) is connected to a first forward and reverse screw rod (28), and the first forward and reverse screw rod (28) penetrates and is connected inside the moving plate (29).

6. The hydrological measuring device with adjustable detection depth according to claim 5, characterized in that: The movable plate (29) is connected to the side end of the piston (21), and a guide rod (31) is connected and penetrated inside the movable plate (29). The guide rod (31) is installed inside the empty groove (30), and the empty groove (30) is opened at the bottom of the storage box (11).

7. The hydrological measuring device with adjustable detection depth according to claim 5, characterized in that: A second rotating shaft (32) is mounted on the end of the first forward and reverse screw (28), the second rotating shaft (32) penetrates and is connected to the outside of the storage box (11), a cleaning rod (33) is mounted on the second rotating shaft (32), and the cleaning rod (33) is located outside the arc-shaped cover (23).

8. The hydrological measuring device with adjustable detection depth according to claim 7, characterized in that: A first driving member (34) is mounted on the outer side of the second rotating shaft (32); a first auxiliary fan (35) is mounted on the first driving member (34); the first auxiliary fan (35) is mounted on the bottom of the storage box (11); and a second auxiliary fan (37) is connected to the first auxiliary fan (35) via a second driving member (36).

9. The hydrological measuring device with adjustable detection depth according to claim 1, characterized in that: A second motor (38) is installed inside the counterweight box (10); an output end of the second motor (38) is connected to a cleaning assembly; the cleaning assembly comprises a second forward and reverse screw (39) connected to the output end of the second motor (38); the second forward and reverse screw (39) is sleeved on the outside of the support line (19); a sleeve (40) is sleeved on the outside of the second forward and reverse screw (39); and a cutting knife (41) is installed on the outside of the sleeve (40).

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