Water conservancy and hydropower engineering cable laying floating body platform

Abstract

The water conservancy and hydropower engineering cable laying floating body platform comprises a floating block, a side connecting table is fixedly arranged on the front side of the floating block, at least three electric propellers are evenly distributed on the lower portion of the floating block around the circumference, a plurality of U-shaped inserting structures are arranged on the side connecting table, the two ends of each U-shaped inserting structure are arranged up and down, and openings of the U-shaped inserting structures face the direction away from the floating block. The portion, close to the floating block, of the lower portion of the U-shaped inserting structure is rotationally connected with an overturning frame capable of overturning up and down, the end, away from the floating block, of the overturning frame abuts against a hooking block, a telescopic rod of an electric push rod is arranged on the hooking block, and the end, away from the telescopic rod, of the electric push rod is arranged on a distribution box at the upper end of the floating block. A bracket is arranged on the portion, located on the front side of the rotating connection position with the overturning frame, of the lower portion of the U-shaped inserting structure, an upward-pushing air bag is arranged on the bracket and communicated with an auxiliary air bag at the front end of the lower portion of the U-shaped inserting structure through an air distribution pipe, and the auxiliary air bag and the upward-pushing air bag can be inflated and expanded by controlling an inflation pump through a controller in the distribution box.

Description

Technical Field

[0001] The present invention belongs to the technical field of cable laying floating platforms, and particularly relates to a cable laying floating platform for water conservancy and hydropower projects. Background Art

[0002] In water conservancy and hydropower projects, the cable laying often needs to cross various water bodies such as rivers and reservoirs. In this case, a floating platform is required to assist in lifting the cable above the water surface. The commonly used floating platform is a cylindrical floating body with a clamping structure provided at the upper end. When using this floating body, it is often necessary to adjust and correct the position by manually driving a boat. If the water body is not in a calm state but fluctuates, the stability of the floating body will be relatively poor. Moreover, since the cable is located above the floating body, this further exacerbates the deterioration of the floating body's stability, easily causing the floating body to pull on the cable, not only making the cable deviate from the vicinity of the predetermined position but also subjecting the cable to irregular pulling and thus being damaged, affecting its service life. Therefore, at this time, a relatively large length redundancy is usually required when laying the cable, which undoubtedly increases the cable laying cost. Moreover, the laying can only be carried out when the weather, water level, etc. are in good conditions, and the construction time window is limited, increasing the uncontrollable factors and construction difficulty of the project. In order to break through this limitation and reduce the laying cost, a floating platform that can laterally arrange the construction cable on one side of the floating body is specifically designed. Summary of the Invention

[0003] In order to overcome the technical problems described in the above background art, the present invention provides a cable laying floating platform for water conservancy and hydropower projects. A plurality of electric thrusters are provided on the floating block, which is convenient for remotely controlling and adjusting the position of the floating block. Moreover, a plurality of parallel U-shaped plug-in structures are provided on the floating block, which are used to forwardly clamp the construction cable. A turning frame is provided on the lower side of the U-shaped plug-in structure, and a hook block capable of hooking up the turning frame to lock the construction cable is provided on the upper side, forming a cable supporting method for laterally clamping the construction cable, reducing the center of gravity of the combination of the floating block and the construction cable, and contributing to resisting wind and wave fluctuations.

[0004] The technical solution of the present invention lies in: a floating platform for cable laying in water conservancy and hydropower projects, including floating blocks. A side connection platform is fixedly arranged on the front side of the floating block, and not less than three electric thrusters are evenly distributed around the lower part of the floating block in a circumferential manner. A number of U-shaped plugging structures with one end up and the other end down and the openings facing away from the floating block are arranged on the side connection platform. A rotatable turnover frame that can turn up and down is rotatably connected to the part of the lower part of the U-shaped plugging structure close to the floating block. A hook scraping block is supported at the end of the turnover frame away from the floating block. The telescopic rod of an electric push rod is arranged on the hook scraping block, and the end of the electric push rod away from the telescopic rod is arranged on the distribution box at the upper end of the floating block. And a bracket is arranged on the part of the lower part of the U-shaped plugging structure in front of the rotatable connection part with the turnover frame. An upward pushing airbag is arranged on the bracket, and the upward pushing airbag is communicated with the auxiliary airbag at the front end of the lower part of the U-shaped plugging structure through a branch air pipe. The auxiliary airbag and the upward pushing airbag can be inflated and expanded by a controller in the distribution box controlling an air inflation pump.

[0005] Further, the U-shaped plugging structure includes a lower insertion pipe, an upper insertion rod, a main air pipe interface and a rotating shaft. The upper insertion rod is directly above the lower insertion pipe and the rear end is relatively bent and fixedly connected to the front end of the side connection platform. A rotating shaft laterally penetrates through the part of the lower insertion pipe close to the floating block, and the rotating shaft also penetrates through the end of the turnover frame close to the floating block, so that the end of the turnover frame away from the floating block can swing up and down around the rotating shaft between the upper insertion rod and the lower insertion pipe. And a main air pipe interface is arranged on the part of the lower insertion pipe in front of the rotating shaft. The air supply pipe in the distribution box enters the lower insertion pipe through the main air pipe interface and is communicated with the auxiliary airbag at the front end of the lower insertion pipe for air supply.

[0006] Further, a cable bending clamping block that is arc-shaped and bent towards the floating block is arranged on the upper side of the middle part of the turnover frame for clamping the construction cable passing through the U-shaped plugging structure.

[0007] Further, a torsion spring is nested on the part of the rotating shaft between the turnover frame and the lower insertion pipe, and both ends of the torsion spring are respectively embedded on the turnover frame and the lower insertion pipe. The torsion spring is in a natural state when the upward pushing airbag is in a non-inflated and expanded state and the turnover frame is pressed against the upward pushing airbag.

[0008] Further, a hook scraping end block that is bent downward is arranged at the upper end of the turnover frame. A magnetic block is arranged on the side part of the hook scraping end block, and a Hall sensor for sensing the magnetic force of the magnetic block is arranged at the end of the upper insertion rod.

[0009] Further, the hook scraping block is locked and nested at the end of the telescopic rod, and the lower end of the hook scraping block is bent backward in a shape corresponding to the bending shape of the hook scraping end block.

[0010] Further, a connecting vertical plate is fixedly arranged at the front end of the lower insertion pipe, and the upper end of the connecting vertical plate is flush with the front end of the lower insertion pipe.

[0011] Further, a gyroscope is also provided inside the distribution box. The controller is electrically connected to the electric thruster, the electric push rod, the Hall sensor, the inflator pump and the gyroscope respectively. The Hall sensor and the gyroscope serve as sensing ends. The controller controls whether the electric push rod stops contracting according to the sensing signal of the Hall sensor, and the controller controls the inflation duration of the inflator pump according to the sensing signal of the gyroscope, thereby determining the maximum inflation amount of the auxiliary airbag, that is, determining the buoyancy generated by the auxiliary airbag.

[0012] Further, a side counterweight is fixedly arranged on the upper side of the side of the auxiliary airbag away from the floating block. The side counterweight can drive the auxiliary airbag to contract below the U-shaped plug-in structure when the auxiliary airbag is in a non-inflated and expanded state.

[0013] Further, balance blocks are provided on the circumferential side wall of the floating block at a part symmetrical to the side connection platform about the axis of the floating block.

[0014] Due to the adoption of the above technologies, the present invention has the following beneficial effects.

[0015] 1. The present invention is provided with a plurality of parallel U-shaped plug-in structures on the floating block, which are clamped forward to the construction cable. A turning frame is arranged on the lower side of the U-shaped plug-in structure, and a hook block capable of hooking up the turning frame to lock the construction cable is arranged on the upper side, forming a cable support method for laterally clamping the construction cable, reducing the center of gravity after the combination of the floating block and the construction cable, and contributing to resisting wind and wave fluctuations.

[0016] 3. Through the coordinated action of the U-shaped plug-in structure, the turning frame, the electric push rod, the hook block and the airbag, the present invention realizes the automatic fixation and release of the cable, reduces the operations of manually adjusting and fixing the cable repeatedly in the traditional laying method, improves the operation efficiency, and reduces the construction time.

[0017] 4. When the cable needs to be released from the U-shaped plug-in structure, the controller controls the inflator pump and the solenoid valve to quickly deflate, and controls the action of the electric push rod, so that the turning frame and the hook block return to the initial position, and the cable can be smoothly released. At the same time, by controlling the electric thruster to move the floating block, the sliding-out speed of the cable is further accelerated.

[0018] 5. The present invention is equipped with a 4G communication module, a Beidou navigation module or a GPS module on the floating block, so that construction personnel can send control signals through a wireless terminal on the shore to realize remote control of the floating block. The controller can receive instructions from construction personnel and accurately control the position of the floating block in the water body through the electric thruster, which can reduce the need for construction personnel to operate in the water body, reduce the risk of manual operation, and improve the safety and efficiency of construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the present invention.

[0020] Figure 2 is the Figure 1 partial enlarged schematic view of part A in

[0021] Figure 3 left view of the present invention.

[0022] Figure 4 bottom view of the present invention.

[0023] Figure 5 rear view of the present invention.

[0024] Figure 6 front view of the present invention.

[0025] Figure 7 top view of the present invention.

[0026] In the figure: 1, photovoltaic panel; 2, distribution box; 3, floating block; 4, balance block; 5, connecting rib; 6, electric thruster; 7, bottom counterweight block; 8, construction cable; 9, auxiliary airbag; 10, side counterweight block; 11, lower insertion pipe; 12, hook and rake block; 13, upper insertion rod; 14, telescopic rod; 15, limit frame; 16, electric push rod; 17, side connection platform; 18, rotating shaft; 19, flipping frame; 20, main air pipe interface; 21, upper push airbag; 22, bracket; 23, branch air pipe; 24, hook and rake end block; 25, connecting vertical plate. Specific embodiments

[0027] Embodiment 1: As Figures 1 - 7As shown, the present invention provides a floating platform for laying cables in water conservancy and hydropower engineering, including a floating block 3 and a bottom counterweight block 7, the bottom of the floating block 3 is provided with a bottom counterweight block 7 for balancing, the front side of the floating block 3 is fixedly provided with a side connecting platform 17 and the lower part is evenly provided with four electric thrusters 6 around the circumference, the side connecting platform 17 is provided with two U-shaped plug-in structures with two ends, one up and one down, and the opening facing away from the floating block 3, the lower part of the U-shaped plug-in structure is rotatably connected to a flip frame 19 that can be flipped up and down, the end of the flip frame 19 away from the floating block 3 is supported by a hook block 12, the hook block 12 is nested and pinned to the end of the telescopic rod 14 of the electric push rod 16, and the end of the electric push rod 16 away from the telescopic rod 14 The upper part of the U-shaped plug-in structure is embedded in and locked on the distribution box 2 at the upper end of the floating block 3, and the lower part of the U-shaped plug-in structure is provided with a bracket 22 on the front side of the rotation connection with the flip frame 19. The bracket 22 is provided with an upward push airbag 21, and the upward push airbag 21 is connected with the auxiliary airbag 9 at the front end of the lower part of the U-shaped plug-in structure through a branch air pipe 23. The auxiliary airbag 9 and the upward push airbag 21 can be inflated by the controller in the distribution box 2 to control the air pump. The controller serves as the core control unit. The controller establishes electrical connections with the electric thruster 6, the electric push rod 16, the Hall sensor, the air pump, the solenoid valve and the gyroscope through control cables, so that it can receive and send control signals in real time and coordinate the working status of each component.

[0028] The distribution box 2 is also provided with a solenoid valve controlled by a gas pipeline, that is, the air pump, solenoid valve, gas pipeline, auxiliary airbag 9, branch air pipe 23, and push-up airbag 21 are connected in sequence to form a gas passage, and the solenoid valve is controlled by a controller to realize the inflation and deflation actions of the auxiliary airbag 9.

[0029] Among them Figure 2 As shown, the U-shaped plug-in structure includes a lower plug-in tube 11, an upper plug-in rod 13, a main air pipe interface 20 and a rotating shaft 18. The upper plug-in rod 13 is located directly above the lower plug-in tube 11 and the rear end is relatively bent and fixedly connected to the front end of the side connecting platform 17. The part of the lower plug-in tube 11 close to the floating block 3 is laterally penetrated by the rotating shaft 18, and the rotating shaft 18 also penetrates the end of the flip frame 19 close to the floating block 3, so that the end of the flip frame 19 away from the floating block 3 can flip and swing around the rotating shaft 18 between the upper plug-in rod 13 and the lower plug-in tube 11, and the main air pipe interface 20 is provided on the part of the lower plug-in tube 11 in front of the rotating shaft 18, and the air supply pipe in the distribution box 2 enters the lower plug-in tube 11 through the main air pipe interface 20 and is connected to the auxiliary air bag 9 at the front end of the lower plug-in tube 11 for air supply.

[0030] In order to enhance the clamping effect of the turning frame 19 on the construction cable 8, a cable bending clamp block curved toward the floating block 3 is provided on the middle upper side of the turning frame 19 for clamping the construction cable 8 passing through the U-shaped plug-in structure.

[0031] The upper end of the flip frame 19 is provided with a downwardly bent hook end block 24, and correspondingly, the lower end of the hook block 12 is bent backward corresponding to the bent shape of the hook end block 24, and the side of the hook end block 24 is provided with a magnetic block A, and the end of the upper plug-in rod 13 is provided with a Hall sensor for sensing the magnetic force of the magnetic block A.

[0032] In order to enhance the connection between the lower plug-in tube 11 and the auxiliary airbag 9, a connecting vertical plate 25 is welded at the front end of the lower plug-in tube 11. At the same time, in order to avoid the connecting vertical plate 25 hindering the construction cable 8 from entering and exiting the U-shaped plug-in structure, the upper end surface of the connecting vertical plate 25 is set flush with the upper side of the front end of the lower plug-in tube 11.

[0033] Among them, the Hall sensor and the gyroscope serve as the sensing end, and the controller controls whether the electric push rod 16 stops contracting according to the sensing signal of the Hall sensor. Specifically, after receiving the signal from the Hall sensor, the controller first determines whether the signal of the Hall sensor reaches a preset value, and the preset value is determined by the magnetic block A. If the preset value is not reached, the contraction action of the telescopic rod 14 on the electric push rod 16 is not stopped. If the preset value is reached, it means that the flip frame 19 has flipped upward to the point where the hook end block 24 is inserted between the ends of the two adjacent upper plug-in rods 13. At this time, the controller can control the electric push rod 16 to stop the contraction of the telescopic rod 14 and complete the buckling of the construction cable 8.

[0034] The electric push rod 16 is placed in a tilted downward manner from the distribution box 2 on the floating block 3. The telescopic rod 14 of the electric push rod 16 is above the upper plug-in rod 13. The connecting seat of the electric push rod 16 is embedded in the side wall of the distribution box 2 and fastened with bolts. The lower end of the fixed cylinder part of the electric push rod 16 is nested in the limiting frame 15. The limiting frame 15 is fixedly set on the distribution box 2 and limits the electric push rod 16 to ensure that the fixed cylinder part of the electric push rod 16 will not swing, so that the telescopic rod 14 can only be extended and retracted relative to the fixed cylinder part of the electric push rod 16, thereby ensuring the accuracy of the control action.

[0035] The four electric thrusters 6 are used to adjust the position and direction of the floating platform in the water body. The thrust directions of the four electric thrusters 6 all point to the center line of the floating block 3. Through the signal instructions of the controller and according to the principle of vector superposition, the four electric thrusters 6 change the thrust size in turn, so that the floating platform can maintain stability and precise positioning in a complex water flow environment.

[0036] In order to prevent the auxiliary airbag 9 in a non-inflated state from affecting the construction cable 8 from entering or moving out of the U-shaped plug-in structure, a side counterweight 10 is adhered to the upper side of the side of the auxiliary airbag 9 away from the floating block 3. When the auxiliary airbag 9 is in a non-inflated state, the deadweight of the side counterweight 10 can overcome the buoyancy and drive the auxiliary airbag 9 to shrink to the bottom of the U-shaped plug-in structure.

[0037] To further improve the stability and anti-overturning ability of the platform, balance blocks 4 are provided on the circumferential side wall of the floating block 3 at positions symmetric about the axis of the floating block 3 with respect to the side connection platform 17. Connecting ribs 5 for strengthening the connection are arranged between the balance blocks 4. That is, the side connection platform 17 and the three balance blocks 4 are successively located at the vertex positions of a square whose circumscribed circle is the outer circumference of the floating block 3. In the case where the construction cable 8 is not loaded, the auxiliary airbag 9 is in a contracted state, and the mass of some components on the side of the floating block 3 where the side connection platform 17 is located can be balanced with the balance blocks 4. In the case where the construction cable 8 is loaded, the auxiliary airbag 9 is in an inflated state, and the buoyancy exerted by the auxiliary airbag 9 can offset the gravity brought by the construction cable 8. Therefore, assuming there are three floating blocks 3 carrying the construction cable 8, the distances between the floating blocks 3 are all equal. The buoyancy F 浮1 generated by the auxiliary airbag 9 on the middle floating block 3 is as follows: F 浮1 =G 缆 -F 浮2 , where G 缆 is the gravity of the cable, and F 浮2 is the buoyancy of the cable.

[0038] F 浮2 =ρ 水 ·πr 2 L·g, where ρ 水 is the water density, r is the cross-sectional radius of the construction cable 8, L is the length of the construction cable 8 between two adjacent floating blocks 3, and g is the gravitational acceleration.

[0039] G 缆 =ρ 缆 ·L·g, where ρ 缆 is the unit weight of the construction cable 8, L is the length of the construction cable 8 between two adjacent floating blocks 3, and g is the gravitational acceleration.

[0040] Thus, through the buoyancy F 浮1 of the auxiliary airbag 9, the bearing effect of the floating block 3 on the construction cable 8 can be controlled. This also determines how much the span should be between two adjacent floating blocks 3 when laying the cable. That is, the larger the span, the greater the buoyancy F 浮1 required for the auxiliary airbag 9.

[0041] Among them, the gyroscope installed in the center of the distribution box 2 can detect the inclination of the floating block 3 in real time. When the floating body tilts due to the impact of water flow or waves, the gyroscope will immediately detect this attitude change and send the corresponding induction signal to the controller. The controller adjusts the inflation degree of the electric thruster 6 and the auxiliary airbag 9 according to the induction signal of the gyroscope to improve the stability of the floating block 3, which helps to reduce the risk of damage to the construction cable 8.

[0042] A photovoltaic panel 1 is horizontally arranged on the top of the distribution box 2. The distribution box 2 is also provided with a photovoltaic power generation system electrically connected to the photovoltaic panel 1. Correspondingly, a battery can be hermetically arranged in the balance block 4, which can not only store electricity but also act as a counterweight due to the relatively heavy weight of the battery itself.

[0043] During actual use, after the floating block 3 is put into the water body, the construction worker sends a control signal to the server or the cloud through a wireless terminal on the shore. The controller on the floating block 3 receives the control signal through the 4G communication module, thus realizing remote control of the floating block 3. The controller sends its own coordinates to the remote control end in real time according to the carried Beidou navigation module or GPS module. The construction worker remotely controls the electric thruster 6 to reach the designated position in the water body to calibrate the construction position of the construction cable 8. Then, when laying the construction cable 8, the construction worker sails the boat to lay the construction cable 8 to the floating block 3. At this time, the U-shaped plug-in structure on the floating block 3 is in an open state, that is, the turning frame 19 is pressed against the bracket 22, and the upper push airbag 21 and the auxiliary airbag 9 are not inflated. After the construction worker manually sends the construction cable 8 into the U-shaped plug-in structure, the construction worker uses the wireless terminal in his hand to control the telescopic rod 14 of the electric push rod 16 on the distribution box 2 to extend downward until the maximum extension length. At this time, the hook block 12 is located below the two lower insertion pipes 11. Then, after the controller controls the electric push rod 16 to stop, it further controls the air pump and the solenoid valve to start inflating the auxiliary airbag 9, and the upper push airbag 21 is also inflated and expanded, turning the turning frame 19 upward. After controlling the hook end block 24 to reach above the lower insertion pipe 11 according to the inflation amount, the controller controls the telescopic rod 14 of the electric push rod 16 to retract. After the hook block 12 hooks the hook end block 24, the turning frame 19 is turned upward until it reaches between the two upper insertion rods 13. At this time, the Hall sensor detects that the magnetic force of the magnet A reaches the preset value, and the controller stops the contraction action of the electric push rod 16 according to the induction signal of the Hall sensor, forming a state as Figure 2 shown in the figure. The construction cable 8 is constrained between the turning frame 19 and the U-shaped plug-in structure, thus completing the positioning of the construction cable 8 in the water body, and subsequent construction workers do not need to sail across the water to reach this place again.

[0044] When it is necessary to release the construction cable 8 from the U-shaped plug-in structure, the controller controls the air inflation pump and the solenoid valve to deflate and empty the auxiliary airbag 9, and then controls the telescopic rod 14 of the electric push rod 16 to extend downward. The hook scraping end block 24 falls downward under its own weight until the telescopic rod 14 reaches the maximum length, and the hook scraping block 12 is separated from the hook scraping end block 24. The hook scraping end block 24 continues to fall onto the bracket 22 along with the flipping frame 19. Then, the controller controls the electric push rod 16 to contract the telescopic rod 14, so that the opening of the U-shaped plug-in structure is opened. Since the auxiliary airbag 9 has been deflated at this time, the floating block 3 will tilt forward, facilitating the sliding out of the construction cable 8 from the U-shaped plug-in structure. To further accelerate the sliding out, the electric thruster 6 can be controlled to drive the floating block 3 to move away from the construction cable 8. After the construction cable 8 is separated from the U-shaped plug-in structure, the floating block 3 returns to the free state, and the electric thruster 6 can be used to drive the floating block 3 back to the shore for hoisting and recovery operations.

[0045] Embodiment 2: On the basis of Embodiment 1, in order to further improve the control accuracy, a magnetic block B is respectively embedded on the left and right side walls of the hook scraping block 12. The magnetic force of the magnetic block B is different from that of the magnetic block A, so that the Hall sensor on the upper plugging rod 13 can distinguish and identify the magnetic block B and the magnetic block A. When the controller receives the signal from the Hall sensor and identifies the magnetic block B, it can be determined that the hook scraping block 12 has passed the end of the upper plugging rod 13, that is, after the construction cable 8 is released from the U-shaped plug-in structure, the hook scraping end block 24 presses against the non-inflated upward pushing airbag 21 on the bracket 22 under its own weight. The controller determines the completion of the contraction action of the electric push rod 16 based on the magnetic block B passing through the upper plugging rod 13, facilitating the entry of the next construction cable 8 into the U-shaped plug-in structure.

[0046] Among them, in order to improve the return ability of the flipping frame 19 where the auxiliary hook scraping end block 24 is located, rather than relying solely on its own weight, a torsion spring is nested on the part of the rotating shaft 18 between the flipping frame 19 and the lower plugging pipe 11. The two ends of the torsion spring are respectively embedded on the flipping frame 19 and the lower plugging pipe 11. The torsion spring is in a natural state when the upward pushing airbag 21 is in a non-inflated and expanded state and the flipping frame 19 presses against the upward pushing airbag 21.

Claims

1. A floating platform for laying cables in a water conservancy and hydropower project, comprising a floating block (3), characterized in that: A side connection platform (17) is fixedly provided on the front side of the floating block (3) and at least three electric thrusters (6) are evenly distributed around the circumference of the lower part. The side connection platform (17) is provided with a plurality of U-shaped plug-in structures with two ends, one up and one down, and the openings facing away from the floating block (3). The lower part of the U-shaped plug-in structure close to the floating block (3) is rotatably connected to a flip frame (19) capable of flipping up and down. The end of the flip frame (19) away from the floating block (3) is supported by a hook block (12). The hook block (12) is provided with a telescopic rod (14) of the electric push rod (16). The end of the electric push rod (16) away from the telescopic rod (14) is arranged on the distribution box (2) at the upper end of the floating block (3), and the lower part of the U-shaped plug-in structure is provided with a bracket (22) in front of the rotation connection with the flip frame (19), and the bracket (22) is provided with an upward push airbag (21), and the upward push airbag (21) is connected to the auxiliary airbag (9) at the front end of the lower part of the U-shaped plug-in structure through a branch air pipe (23), and the auxiliary airbag (9) and the upward push airbag (21) can be inflated by an air pump controlled by a controller in the distribution box (2).

2. A floating platform for laying cables in water conservancy and hydropower projects according to claim 1, characterized in that: The U-shaped plug-in structure comprises a lower plug-in tube (11), an upper plug-in rod (13), a main air pipe interface (20) and a rotating shaft (18); the upper plug-in rod (13) is located directly above the lower plug-in tube (11) and has a rear end relatively bent and fixedly connected to the front end of the side connecting platform (17); the rotating shaft (18) penetrates the part of the lower plug-in tube (11) close to the floating block (3) in a lateral direction; the rotating shaft (18) also penetrates the end of the flip frame (19) close to the floating block (3), so that the upper plug-in rod (13) is fixedly connected to the front end of the side connecting platform (17); The end of the flip frame (19) away from the floating block (3) can flip and swing around the rotating shaft (18) between the upper plug-in rod (13) and the lower plug-in tube (11), and the main air pipe interface (20) is provided on the part of the lower plug-in tube (11) located in front of the rotating shaft (18). The air supply pipe in the distribution box (2) enters the lower plug-in tube (11) through the main air pipe interface (20) and is connected to the auxiliary air bag (9) at the front end of the lower plug-in tube (11) for air supply.

3. A floating platform for laying cables in water conservancy and hydropower projects according to claim 2, characterized in that: A cable bending clamp block that is curved in an arc shape toward the floating block (3) is provided on the middle upper side surface of the flip frame (19) and is used to clamp the construction cable (8) that passes through the U-shaped plug-in structure.

4. A floating platform for laying cables in water conservancy and hydropower projects according to claim 2, characterized in that: A torsion spring is embedded in the portion of the rotating shaft (18) between the flip frame (19) and the lower plug-in tube (11), and the two ends of the torsion spring are respectively embedded in the flip frame (19) and the lower plug-in tube (11). When the upward push airbag (21) is in a non-inflated state and the flip frame (19) is pressed against the upward push airbag (21), the torsion spring is in a natural state.

5. A floating platform for laying cables in water conservancy and hydropower projects according to claim 2, characterized in that: The upper end of the flip frame (19) is provided with a downwardly bent hook end block (24), the side of the hook end block (24) is provided with a magnetic block, and the end of the upper plug-in rod (13) is provided with a Hall sensor for sensing the magnetic force of the magnetic block.

6. A floating platform for laying cables for water conservancy and hydropower projects according to claim 4, characterized in that: The hook block (12) is locked and nested in the end of the telescopic rod (14), and the lower end of the hook block (12) is in a backward bending shape corresponding to the bending shape of the hook end block (24).

7. A floating platform for laying cables in water conservancy and hydropower projects according to claim 2, characterized in that: A connecting vertical plate (25) is fixedly provided at the front end of the lower plug-in tube (11), and the upper end of the connecting vertical plate (25) is flush with the front end of the lower plug-in tube (11).

8. A floating platform for laying cables for water conservancy and hydropower projects according to any one of claims 1 to 7, characterized in that: A gyroscope is also provided in the distribution box (2), and the controller is electrically connected to the electric propeller (6), the electric push rod (16), the Hall sensor, the air pump and the gyroscope respectively. The Hall sensor and the gyroscope serve as sensing ends. The controller controls whether the electric push rod (16) stops contracting according to a sensing signal of the Hall sensor. The controller controls the inflation time of the air pump according to the sensing signal of the gyroscope, thereby determining the inflation amount of the auxiliary airbag (9), that is, determining the buoyancy generated by the auxiliary airbag (9).

9. A floating platform for laying cables in water conservancy and hydropower projects according to claim 8, characterized in that: A side counterweight (10) is fixedly arranged on the upper side of the side of the auxiliary airbag (9) away from the floating block (3); the side counterweight (10) can drive the auxiliary airbag (9) to shrink to below the U-shaped plug-in structure when the auxiliary airbag (9) is in a non-inflated state.

10. A floating platform for laying cables in water conservancy and hydropower projects according to claim 9, characterized in that: A balancing block (4) is provided on a portion of the circumferential side wall of the floating block (3) that is symmetrical with the side connecting platform (17) about the axis of the floating block (3).

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