Bidirectional water retaining buoyancy tank gate fixing device and using method

Abstract

The invention relates to a bidirectional water retaining buoyancy tank gate fixing device and a using method. The device comprises a gate port bank pier, a buoyancy tank gate, a threshold and a cable winch. The gate port bank piers are located on the two banks, one side of each gate port bank pier protrudes to form an L shape, the other side of each gate port bank pier is provided with a hidden door bolt and is of a concave structure when necessary, the cable winches are arranged on the gate port bank piers on the two banks, and steel wire ropes are arranged on the cable winches. A tackle connected with the steel wire rope is arranged on the buoyancy tank gate, and a tide tank, a water ballast tank, a water pump room and a water injection valve are arranged in the buoyancy tank gate. The hidden bolt is arranged on the side, which is less used, of the gate port bank pier, so that the gate port bank pier has a bidirectional water retaining function; the cable winches are arranged on the two sides of the gate port bank pier, the tackles with the adjustable positions are arranged, and the stability of the device and the stability of the device in the using process are guaranteed in multiple aspects. A water pump house used for pumping water in the water ballast space is arranged in the buoyancy tank gate, so that the water retaining buoyancy tank floats upwards to ensure that the navigation requirement is still met in the storm surge.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic gates, and in particular to a bidirectional water retaining pontoon gate fixing device and a use method thereof. Background Art

[0002] Some important cities in my country are coastal cities with a large number of rivers flowing into the sea. The terrain is low-lying and some cities are even below sea level. As the global sea level continues to rise, the climate becomes increasingly severe, and storm surges invade seriously, there is an urgent need to build tide gates at the city’s estuary.

[0003] Commonly used tide gates include vertical gates, horizontal sliding gates and lying gates. For rivers with seagoing vessels in estuaries, the limited clearance of vertical gates affects the size of ships, the long closing time of horizontal sliding gates affects navigation, and the lying gates are inconvenient to maintain and have a short service life, all of which have major defects. The floating box-type tide gate, which was created based on the dry dock gate, can meet the navigation needs of large ships and the span requirements of large estuaries. It can withstand large horizontal loads, is flexible to tugboats, and reduces the closing time.

[0004] Existing pontoon-type tide gates are usually one-way water retaining gates. The operation of tide gates is often accompanied by astronomical tides, with high tides rising quickly and then immediately receding to form low tides. A large head difference will appear on both sides of the gate in a short period of time, but large pontoon gates take a long time to open, and the traditional process structure determines that opening too quickly will lead to greater safety risks.

[0005] Chinese utility model patent CN218027529U (publication date: December 13, 2022) discloses an automatic device suitable for underwater fixation of river pontoon gates. The device can provide electromagnetic force to the water retaining of the pontoon gates. It has the advantages of fast application speed, convenient operation, and small power load during operation. There are no protruding buildings in the riverbed, which can meet the requirements of river navigation.

[0006] Although the above patent is easy to operate, it does not solve the problem that the existing pontoon-type tide gate can only block water in one direction and cannot adapt to storm surge conditions. Based on this, the present invention provides a two-way water-blocking pontoon gate fixing device and a method of use. Summary of the invention

[0007] The purpose of the present invention is to overcome the problem that the existing pontoon-type tide gate can only block water in one direction, resulting in a large head difference on both sides of the gate in a short period of time under high tide conditions, thereby causing safety hazards. A two-way water-blocking pontoon gate fixing device and a use method are provided. The device has a two-way water-blocking function and high stability, and can meet the navigation requirements under storm surge conditions.

[0008] A two-way water retaining pontoon gate fixing device comprises a gate pier, a pontoon gate, a threshold and a mooring machine;

[0009] The gate piers are located on both sides, one side of which is convex to form an L shape, and the other side is provided with a hidden bolt to form a concave structure for emergency reverse water blocking;

[0010] The mooring machine is located on the gate piers on both sides, and a steel wire rope is arranged on it; the present application installs mooring machines on both sides, the purpose is to prevent the floating box gate from tilting when switching the water retaining direction and the fixed position;

[0011] The buoy gate can be filled with water and drained. It has three layers inside. The top layer is a tidal tank, the middle layer is a ballast tank and a pump room, and the bottom layer is a ballast tank and a water filling valve.

[0012] The pontoon gate is used to resist storm surges and provide navigation conditions;

[0013] The ballast water tank can store a large amount of water to control the overall weight of the pontoon gate;

[0014] The pump room is used to pump out water from the ballast tank after the storm surge ends.

[0015] The tidal tank can ensure that changes in tides do not cause changes in buoyancy to the gate. The pumping speed of the pontoon gate when it floats up and the filling speed of the filling valve when it sinks are adapted to the self-flowing speed of the water in the tidal tank to ensure the safety of the structure when it floats up and sinks.

[0016] The threshold is used to provide the support reaction force required by the pontoon gate with a longer total length;

[0017] Furthermore, the protruding side of the gate pier is the side where the water level often rises, that is, the upstream side.

[0018] Furthermore, the length of the pontoon gate is more than 0.5m smaller than the widest part of the gate, which facilitates the pontoon gate to enter a fixed position. The top of its upper deck is consistent with the top of the gate pier. Its thickness is designed according to the length of the pontoon gate and needs to have a certain longitudinal stability.

[0019] Furthermore, during the closed use of the pontoon gate, the total weight at the highest water level, that is, the sum of the water weight when fully loaded and the deadweight of the structure should be greater than the total buoyancy, and the surplus value should not be less than 5% of the total weight of the pontoon gate when the ballast tank is empty.

[0020] Furthermore, the water injection valve is divided into two types: manual valve and electric valve. The manual valve is used to accelerate the sinking speed to prevent emergency situations, and the electric valve is used to control the sinking stability of the gate.

[0021] Furthermore, the threshold is constructed by the immersed tube method to ensure that the structure is installed without affecting navigation. The depth of its gate groove is not more than one-fifth of the height of the pontoon gate. When the pontoon gate floats with a light draft, there is a surplus depth of not less than 0.5m between its bottom component and the top of the threshold. Its width is more than 0.5m larger than the width of the pontoon gate, so that the pontoon gate can smoothly enter the groove in the threshold when it sinks through the water injection valve, and provide a certain space for the pontoon gate to float slightly.

[0022] Furthermore, a pulley is provided on the pontoon gate, and the position of the pulley can be adjusted on the pontoon gate so as to fix various positions of the pontoon gate.

[0023] Furthermore, the steel wire rope on the mooring machine is connected to the pulley on the buoy gate.

[0024] A method for using a two-way water retaining pontoon gate fixing device, characterized in that it comprises the following steps:

[0025] Step S1: Preliminary preparation; clean up the debris and stones in the groove between the thresholds to facilitate the sinking of the pontoon gate; inspect the tidal tank to prevent foreign objects from blocking the vents and connecting water pipes; empty the water in the ballast tank in the pump room to form a cavity to provide buoyancy;

[0026] Step S2: After receiving the warning, before the storm surge arrives, according to the direction of the rising tide, the tugboat drags the pontoon gate to the side of the raised structure or the side of the hidden bolt, and uses the electric water filling valve to fully ballast the ballast water tank to control the gate to sink into the threshold, and then fix it with a winch and a pulley. When the pontoon gate is filled with water and gradually sinks, the tightened wire rope is gradually relaxed;

[0027] Step S3: When the storm tide recedes, the water level difference between the upstream and downstream is reversed. At this time, the hidden bolt can be extended as needed, and part of the water in the ballast tank is discharged through the pump room to balance the buoyancy and gravity of the floating gate. The floating gate is dragged to the side of the raised structure of the gate pier or the side of the hidden bolt, and the pulley is adjusted on the floating gate to fix the various positions of the floating gate so that it is close to the structure, the bolt and the bottom groove, so that the structure is evenly stressed;

[0028] Step S4: After the storm surge ends, the hidden bolt is retracted, and the water pump in the pump room pumps out the water inside the ballast water tank, causing the pontoon gate to float up slowly, and then it is removed by a tugboat to restore navigation.

[0029] Furthermore, in step S2, the mooring machine is used only when the pontoon gate enters the threshold and cannot be used to accelerate the towing process to avoid unbalanced forces on the upper and lower sides of the pontoon gate.

[0030] Compared with the prior art, the advantages and effects of this application are as follows:

[0031] 1. A two-way water retaining pontoon gate fixing device provided by the present invention has a hidden bolt arranged on the less used side of the gate pier for emergency reverse water retaining, so that the present invention has a two-way water retaining function.

[0032] 2. The bidirectional water retaining pontoon gate fixing device provided by the present invention ensures the stability of the device from multiple angles: ① The water injection valve is divided into manual valves and electric valves, wherein the manual valve is used to accelerate the sinking speed in case of emergency, and the electric valve is used to control the sinking stability of the gate; ② The position of the pulley on the pontoon gate can be adjusted to fix the various positions of the pontoon gate; ③ The present invention installs a mooring machine on both sides of the gate pier to prevent the pontoon gate from tilting when switching the water retaining direction and the fixed position.

[0033] 3. The present invention provides a method for using a two-way water retaining pontoon gate fixing device. When the electric water injection valve controls the gate to sink into the threshold, it is fixed by a winch and a pulley to prevent the pontoon gate from tilting outward when sitting, thereby improving the stability of the device during use; when the storm tide recedes, the water level difference is reversed, and the pump room inside the pontoon gate can pump out the water inside the ballast tank to float the water retaining pontoon, and then move it to the other side to provide blocking capacity in the opposite direction. This technical solution enables the present application to meet the two-way water retaining requirements when the storm tide rises and falls.

[0034] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application so that it can be implemented in accordance with the contents of the specification, and to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following is a detailed description of the preferred embodiments of the present application in conjunction with the accompanying drawings as follows.

[0035] Based on the detailed description of the specific embodiments of the present application in combination with the accompanying drawings below, those skilled in the art will become more aware of the above and other objects, advantages and features of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings without creative work. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0037] in:

[0038] Figure 1It is a schematic diagram of the bidirectional water retaining buoyancy box gate of the present invention blocking the water surface in the forward direction;

[0039] Figure 2 It is a schematic diagram of the reverse blocking water plane of the bidirectional water retaining buoy gate of the present invention;

[0040] Figure 3 yes Figure 1 AA elevation diagram of the;

[0041] Figure 4 yes Figure 2 BB elevation diagram;

[0042] Figure 5 yes Figure 1 Schematic diagram of CC section;

[0043] Figure 6 yes Figure 2 DD section schematic diagram;

[0044] Figure 7 It is a schematic diagram of the internal structure of the bidirectional water retaining pontoon gate of the present invention.

[0045] Figure numerals: 1-gate pier; 2-hidden bolt; 3-floating tank gate; 4-ballast water tank; 5-water filling valve; 6-pump room; 7-tidal tank; 8-threshold; 9-motor winch; 10-wire rope; 11-pulley. DETAILED DESCRIPTION

[0046] To make the purpose, technical scheme and advantages of the embodiment of the present application clearer, the technical scheme in the embodiment of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the present application. Obviously, the described embodiment is a part of the embodiment of the present application, rather than all of the embodiments. In the following description, specific details such as specific configuration and components are provided only to help fully understand the embodiments of the present application. Therefore, it should be clear to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, for clarity and brevity, the description of known functions and structures is omitted in the embodiment.

[0047] It should be understood that the references to "one embodiment" or "this embodiment" throughout the specification mean that the specific features, structures, or characteristics associated with the embodiment are included in at least one embodiment of the present application. Therefore, the references to "one embodiment" or "this embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0048] In addition, the present application may repeat reference numerals and / or letters in different examples. This repetition is for the purpose of simplicity and clarity, and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0049] The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist at the same time. The term " / and" in this article describes another type of association object relationship, indicating that there can be two relationships. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0050] The term "at least one" in this article is merely a description of the association relationship of associated objects, indicating that there may be three relationships. For example, at least one of A and B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0051] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusions.

[0052] Example 1

[0053] This embodiment introduces a two-way water retaining pontoon gate fixing device. The schematic diagram of the positive water retaining plane is shown in Figure 1 , please refer to the reverse block horizontal plane diagram Figure 2 , Figure 1 Please refer to the AA elevation diagram of Figure 3 , Figure 2 Please refer to the BB elevation diagram for Figure 4 , Figure 1 For the CC section diagram, please refer to Figure 5 , Figure 2 For a DD section diagram, please refer to Figure 6 The device comprises a gate pier 1, a pontoon gate 3, a threshold 8 and a mooring machine 9.

[0054] The gate pier 1 is located on both sides of the revetment, with one side protruding near the upstream to form an L shape, and a hidden bolt 2 is provided on the other side, which is concave when necessary to provide an emergency reverse water blocking function;

[0055] The mooring machine 9 is located on the gate pier 1 on both sides, and a steel wire rope 10 is arranged on it; in this embodiment, the mooring machine 9 is arranged on both sides to prevent the buoy gate 3 from tilting when switching the water retaining direction and the fixed position;

[0056] The buoy gate 3 can be filled with water and drained, and has three layers inside. Figure 7 The top layer is a tidal tank 7, the middle layer is a ballast tank 4 and a pump room 6, and the bottom layer is a ballast tank 4 and a water injection valve 5; the buoy gate 3 is placed in the threshold 8 for support during the closed use;

[0057] The buoy gate 3 is used to resist storm surges and provide navigation conditions;

[0058] The ballast water tank 4 can store a large amount of water to control the overall weight of the pontoon gate 3;

[0059] The pump house 6 is used to pump out the water in the ballast water tank 4 after the storm surge ends.

[0060] The tidal chamber 7 can ensure that changes in tides do not cause changes in the buoyancy of the gate. The pumping speed of the water pump when the pontoon gate 3 floats and the filling speed of the water filling valve 5 when sinking are adapted to the self-flowing speed of the water in the tidal chamber 7 to ensure the safety of the structure when floating or sinking.

[0061] See also Figure 3 The threshold 8 is used to provide the support reaction force required by the pontoon gate 3 with a longer total length. Its depth h1 is designed according to the height of the pontoon gate 3, and its elevation 0+h1 is more than 0.5m below the bottom structure of the lower water level pontoon gate 3 when it is unloaded;

[0062] Furthermore, the protruding side of the gate pier 1 is the side that is often flooded.

[0063] Furthermore, the length of the pontoon gate 3 is more than 0.5m smaller than the widest part of the gate, which facilitates the pontoon gate 3 to enter a fixed position. The top of its upper deck is consistent with the top of the gate pier 1, and its thickness is designed according to the length of the pontoon gate 3, and needs to have a certain longitudinal stability.

[0064] Furthermore, during the closed use of the pontoon gate 3, the total weight at the highest water level, that is, the sum of the water weight when fully loaded and the deadweight of the structure should be greater than the total buoyancy, and the surplus value should not be less than 5% of the total weight of the pontoon gate 3 when the ballast tank 4 is empty.

[0065] Furthermore, the water injection valve 5 is divided into two types: a manual valve and an electric valve. The manual valve is used to accelerate the sinking speed to prevent emergency situations, and the electric valve is used to control the sinking stability of the gate.

[0066] Furthermore, the threshold 8 is constructed by the immersed tube method, and the structure can be installed without affecting navigation as much as possible. The depth of its gate groove is not more than one-fifth of the height of the pontoon gate 3. When the pontoon gate 3 floats with a light draft, there is a surplus depth of not less than 0.5m between its bottom component and the top of the threshold 8; its width needs to be more than 0.5m greater than the width of the pontoon gate 3, so that the pontoon gate 3 can smoothly enter the groove in the threshold 8 when sinking through the water injection valve 5, and provide a certain space for the pontoon gate 3 to float slightly.

[0067] Furthermore, a pulley 11 is provided on the buoyancy gate 3 , and the position of the pulley 11 can be adjusted on the buoyancy gate 3 so as to fix various positions of the buoyancy gate 3 .

[0068] Furthermore, the steel wire rope 10 on the mooring machine 9 is connected to the pulley 11 on the buoy gate 3 .

[0069] The technical effect achieved by this embodiment is: the present invention arranges a hidden bolt on the side of the gate pier that is less used, which is used for emergency reverse water blocking, so that the present application has a two-way water blocking function; the water injection valve of the present invention is divided into manual and electric types, among which the manual valve is used to accelerate the sinking speed to prevent emergency situations, and the electric valve is used to control the sinking stability of the gate to improve the stability of the device.

[0070] Example 2

[0071] Based on Example 1, this example introduces a method for using a two-way water retaining pontoon gate fixing device, and the steps are as follows:

[0072] Step S1: Preliminary preparation; clean the debris and stones in the groove of the threshold 8 to facilitate the sinking of the pontoon gate 3; inspect the tidal tank 7 to prevent foreign objects from getting stuck in the vent and the connecting water pipe; the pump room 6 drains the water in the ballast tank 4 to form a cavity to provide buoyancy;

[0073] Step S2: After receiving the warning, before the storm surge arrives, according to the direction of the rising tide, the tugboat drags the pontoon gate 3 to the side of the raised structure or the side of the hidden bolt 2, and uses the electric water filling valve 5 to fully ballast the ballast water tank 4 to control the gate to sink into the threshold 8, and then fix it through the mooring machine 9 and the pulley 11. When the pontoon gate 3 is filled with water and gradually sinks, the tightened wire rope 10 is gradually relaxed;

[0074] During this process, the mooring machine 9 is only used when the pontoon gate 3 enters the threshold and cannot be used to accelerate the towing process to avoid unbalanced upper and lower forces on the pontoon gate 3; the sinking time is not less than 10 minutes.

[0075] Step S3: When the storm tide recedes, the water level difference between the upstream and downstream is reversed. At this time, the hidden bolt 2 can be extended as needed, and part of the water in the ballast tank 4 can be discharged through the pump room 6, so that the buoyancy and gravity of the pontoon gate 3 are balanced, and the pontoon gate 3 is dragged to the side of the protruding structure of the gate pier 1 or the side of the hidden bolt 2. The pulley 11 is adjusted on the pontoon gate 3 to fix the various positions of the pontoon gate 3 so that it is close to the structure, the bolt and the bottom groove, so that the structure is evenly stressed;

[0076] Step S4: After the storm surge ends, the hidden bolt 2 is retracted, and the water pump in the pump room 6 pumps out the water in the ballast tank 4, so that the pontoon gate 3 slowly floats up, and is removed by a tugboat to restore navigation;

[0077] The floating time is not less than 15 minutes.

[0078] The technical effect achieved by this embodiment is: when the electric water injection valve controls the gate to sink into the threshold, it is fixed by a winch and a pulley to prevent the pontoon gate from tilting outward when it is seated, thereby improving the stability of the device during use; after the storm surge is over, the pump room inside the pontoon gate can pump out the water inside the ballast tank to float the water retaining pontoon, and then move it away with a tugboat. This technical solution enables the present application to still meet the navigation requirements during storm surges.

[0079] The above description is only the preferred embodiment of the present invention, which does not limit the protection scope of the present invention. For those skilled in the art, the present invention can be modified and varied in various ways. Within the spirit and principle of the present invention, any change, modification, replacement, integration and parameter change of these embodiments by conventional substitution or capable of achieving the same function without departing from the principle and spirit of the present invention shall fall within the protection scope of the present invention.

Claims

1. A two-way water retaining pontoon gate fixing device, characterized in that: It comprises a gate pier (1), a buoy gate (3), a threshold (8), and a mooring machine (9); The gate pier (1) is located on both sides, one side of which is convex to form an L shape, and the other side is provided with a hidden bolt (2) to form a concave structure; The mooring machine (9) is located on the gate piers (1) on both sides of the river, and a steel wire rope (10) is arranged on the mooring machine; The buoy gate (3) has three layers inside, the top layer is a tidal tank (7), the middle layer is a ballast water tank (4) and a water pump room (6) arranged in intervals, and the bottom layer is a ballast water tank (4) and a water injection valve (5).

2. A two-way water retaining pontoon gate fixing device according to claim 1, characterized in that: The protruding side of the gate pier (1) is the side that is often flooded.

3. A two-way water retaining pontoon gate fixing device according to claim 1, characterized in that: The length of the pontoon gate (3) is more than 0.5 m smaller than the widest part of the gate, and the top of the upper deck of the pontoon gate (3) is at the same elevation as the top of the gate pier (1).

4. A two-way water retaining pontoon gate fixing device according to claim 3, characterized in that: The sum of the water weight and the deadweight of the structure of the ballast water tank (4) when fully loaded is greater than the total buoyancy, and the surplus value is not less than 5% of the total weight of the buoyancy gate (3) when the ballast water tank (4) is unloaded.

5. A two-way water retaining pontoon gate fixing device according to claim 1, characterized in that: The water injection valve (5) is divided into two types: a manual valve and an electric valve. The manual valve is used to accelerate the sinking speed, and the electric valve is used to control the sinking stability of the gate.

6. A two-way water retaining pontoon gate fixing device according to claim 1 or 3, characterized in that: The threshold (8) is constructed by a submerged tube method, the depth of the door slot is no more than one fifth of the height of the pontoon gate (3), and the width is more than 0.5 m greater than the width of the pontoon gate (3).

7. A two-way water retaining pontoon gate fixing device according to claim 6, characterized in that: The buoyancy gate (3) is provided with a pulley (11), and the pulley (11) is used to fix various positions of the buoyancy gate (3).

8. A two-way water retaining pontoon gate fixing device according to claim 7, characterized in that: The steel wire rope (10) is connected to the pulley (11).

9. A method for using a two-way water retaining pontoon gate fixing device according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step S1: Preliminary preparation; clean the debris and stones in the groove between the threshold (8) to facilitate the sinking of the pontoon gate (3); inspect the tidal tank (7) to prevent foreign objects from getting stuck in the vent and the connecting water pipe; empty the water in the ballast tank (4) in the pump room (6) to form a cavity to provide buoyancy; Step S2: After receiving an early warning, before the storm surge arrives, according to the direction of the rising tide, the tugboat tows the pontoon gate (3) to the side of the raised structure or the side of the hidden bolt (2), and uses the electric water injection valve (5) to fully ballast the ballast water tank (4) to control the gate to sink into the threshold (8), and then fix it with a mooring machine (9) and a pulley (11). When the pontoon gate (3) is filled with water and gradually sinks, the tightened wire rope (10) is gradually relaxed; Step S3: When the storm tide recedes, the water level difference between the upstream and downstream is reversed. At this time, the hidden bolt (2) can be extended as needed to discharge part of the water in the ballast tank (4) through the pump room (6) so that the buoyancy and gravity of the pontoon gate (3) are balanced. The pontoon gate (3) is dragged to the side of the protruding structure of the gate pier (1) or the side of the hidden bolt (2). The pulley (11) is adjusted on the pontoon gate (3) to fix the various positions of the pontoon gate (3) so that it is close to the structure, the bolt and the bottom groove, so that the structure is evenly stressed. Step S4: After the storm surge ends, the hidden bolt (2) is retracted, and the water pump in the pump room (6) pumps out the water inside the ballast tank (4), causing the pontoon gate (3) to slowly float up, and is removed by a tugboat to restore navigation.

10. The method for using the bidirectional water retaining pontoon gate fixing device according to claim 9, characterized in that: In the step S2, the mooring machine (9) is used only when the pontoon gate (3) enters the threshold, and cannot be used to accelerate the towing process to avoid unbalanced forces on the upper and lower parts of the pontoon gate (3).

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