A buoyancy tank and connection structure

Abstract

The present invention discloses a pontoon and a connection structure, comprising a plurality of pontoon bodies, a hub and a movable pontoon, wherein a frame plate is installed on one side of the hub, and positioning sleeve rods corresponding to the positioning rods are installed on both sides of the movable pontoon, a spring is installed on the inner wall of the positioning sleeve rod, a sliding rod matching the inner wall of the positioning sleeve rod is installed on one end of the spring, and one end of the sliding rod is connected to one side of the positioning rod, wherein two guide rods are installed with guide rods at one end, and guide plates are installed on one side of two adjacent guide rods; a monitoring module installed on the movable pontoon can monitor the outer layer of the platform through an acoustic sensor and an image recognition sensor, and can control the movable pontoon to release displacement according to the monitoring information in cooperation with a PLC control unit, so that the movable pontoon can provide a gripping platform for people who fall into the sea, and drag the patient to the floating platform, so as to facilitate timely rescue of the staff who fall into the sea and ensure the safety of the staff during operation.

Description

Technical Field

[0001] The present invention relates to the technical field of floating platforms, and in particular to a buoyancy box and a connection structure. Background Art

[0002] With the development of marine fisheries, the method of using pontoons to form floating platforms for fish farming is becoming increasingly popular;

[0003] However, such floating platforms composed of pontoons are usually in a marine environment and are continuously affected by waves and currents. In such a complex and unstable environment, workers working on the platform face a huge risk of falling into the sea. Although some existing measures are to monitor the situation around the platform in real time by setting up monitoring devices, and to sound an alarm when a person falls into the sea, this method only stays at the warning level after the problem is discovered, and cannot provide a direct and effective rescue platform for the people who fall into the sea as soon as the incident occurs. This means that before the rescue force arrives, the people who fall into the sea are in a dangerous marine environment for a long time, and their lives are seriously threatened. They may be killed or injured due to various factors such as drowning, hypothermia or damage by marine life. Therefore, there is an urgent need for a solution that can quickly provide a rescue platform and ensure the life safety of the workers after they fall into the sea. Summary of the invention

[0004] The main purpose of the present invention is to provide a buoyancy box and a connection structure.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A pontoon and connection structure, including a plurality of pontoon bodies, a hub and a movable pontoon, a frame plate is installed on one side of the hub, four guide rods that are in contact with adjacent pontoon bodies are fixedly connected to one side of the frame plate, positioning rods are slidably connected between the guide rods, a traction rope is installed and connected to the driving end of the hub, one end of the traction rope passes through the positioning rod, and one end of the traction rope is connected to one side of the movable pontoon, positioning sleeve rods corresponding to the positioning rods are installed on both sides of the movable pontoon, and springs are installed on the inner wall of the positioning sleeve rods. A sliding rod matching the inner wall of the positioning sleeve rod is installed at one end of the spring, and one end of the sliding rod is connected to one side of the positioning rod, wherein two guide rods are installed at one end, and guide plates are installed on one side of two adjacent guide rods. A rotating ring is rotatably connected to the bottom of the movable pontoon, and a rotating plate is hinged on the inner wall of the rotating ring. A monitoring module is installed on the movable pontoon, and the monitoring module includes an acoustic sensor and an image recognition sensor. A pressure sensing module is installed on the movable pontoon, and a PLC control unit is arranged in the movable pontoon.

[0007] A further improvement of the present invention is that a plurality of the pontoon bodies are interlocked and spliced ​​with each other, the movable pontoon is located between two of the pontoon bodies, the hub is fixedly connected to one side of one of the pontoon bodies, a support frame is installed between every two corresponding guide rods, and the support frame is staggered with the movable pontoon.

[0008] A further improvement of the present invention is that positioning plates are fixedly connected at both ends of the frame plate, the two positioning plates are respectively located between two adjacent guide rods, the positioning sleeve rod and both ends of the positioning rod are slidably connected to one side of the positioning plate, and the positioning sleeve rod and the positioning rod are in contact with the guide rod.

[0009] A further improvement of the present invention is that a mounting groove matching the rotating ring is provided at the bottom of the movable buoy, an annular groove is provided on the inner wall of the mounting groove, a limiting ring matching the annular groove is installed on the outer wall of the rotating ring, and the limiting ring is slidably connected to the annular groove.

[0010] A further improvement of the present invention is that the PLC control unit signal is connected to a drive motor and an adjustment motor, the drive end of the drive motor is connected to one side of the rotating plate, a connecting plate is installed on the inner wall of the rotating ring, and the drive end of the adjustment motor is connected to the connecting plate.

[0011] A further improvement of the present invention is that a buoyancy tank and a connection structure include the following steps:

[0012] S1. The floating platform is formed by splicing the pontoon bodies to facilitate the staff to carry out fish farming and other work. A hub can be installed between two adjacent pontoon bodies at a certain distance between the outermost pontoon bodies. The traction rope connected to the driving end of the hub can be connected to the movable pontoon, so that the movable pontoon can be pulled by the hub and the traction rope, so that the movable pontoon is located between the pontoon bodies and at the outermost part of the floating platform composed of the pontoon bodies. The monitoring module installed on the movable pontoon can monitor the interface between the floating platform and the sea surface under the action of the acoustic sensor and the image recognition sensor;

[0013] S2. When a worker falls into the sea accidentally, the acoustic sensor and the image recognition sensor can transmit the monitoring information of the fall to the PLC control unit, and the PLC control unit controls the hub to release the traction rope. At the same time, the PLC control unit drives and controls the rotating ring and the rotating plate connected to the bottom of the movable pontoon. The PLC control unit drives the rotating plate through the driving motor, and cooperates with the image recognition sensor to continuously transmit the monitoring information to the PLC control unit, so that the movable pontoon can be moved to the position where the worker falls into the sea, so that the movable pontoon can provide a platform for the worker to grab. When the worker who falls into the sea grabs the movable pontoon, the pressure sensor module installed on the outer wall of the movable pontoon can transmit the pressure signal of the outer wall to the PLC control unit, and the PLC control unit controls the hub to reel in the traction rope again, so that the movable pontoon can drag the worker to the floating platform composed of the pontoon body, so as to provide timely rescue for the worker who falls into the sea and ensure the safety of the worker during operation.

[0014] S3. When the movable pontoon needs to be reset, the positioning rod can be supported by the positioning sleeve rod and the sliding rod, and the spring can be used to place it at the front end of one side of the movable pontoon. When the traction rope pulls the movable pontoon, the positioning rod is displaced synchronously with it, and the positioning rod corresponds to the horizontal level of the movable pontoon. The positioning rod can be guided and positioned by the guide rods and the guide plates at this time, so that the positioning rod can slide between the guide rods, drive the movable pontoon to be pulled between the guide rods, and reset it, thereby preventing the distance between the pontoon bodies from changing easily, which affects the resetting of the movable pontoon.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the monitoring module installed on the movable pontoon can monitor the outer layer of the platform through the acoustic sensor and the image recognition sensor, and can cooperate with the PLC control unit to control the release displacement of the movable pontoon according to the monitoring information, so that when the staff accidentally falls into the sea, the movable pontoon can provide a grasping platform for the staff who fall into the sea, and under the information transmission of the pressure sensor module, the traction rope can be controlled by the hub to shrink and drag the patient to the floating platform, so as to facilitate timely rescue of the staff who fall into the sea and ensure the safety of the staff during operation.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the spacing between the installed positions of the movable floats is supported and fixed by the frame plate and the guide rods, the positioning rod and the rotating ring can be limited in cooperation with the guide rods, the positioning rod is horizontal with the movable float by the spring and the slide rod, and under the guidance of the guide rod and the guide plate on the positioning rod, the movable float can be easily pulled between the guide rods to be reset when it is reset. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1The figure is a three-dimensional structural schematic diagram of a buoyancy box and a connecting structure of the present invention.

[0018] Figure 2 The present invention is a schematic diagram of the three-dimensional structure of a buoyancy box and a hub in a connecting structure.

[0019] Figure 3 The present invention is a schematic diagram of the movement of a movable buoy in a buoy and a connecting structure.

[0020] Figure 4 The present invention is a three-dimensional structural schematic diagram of a movable buoy in a buoy and a connecting structure.

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of a buoyancy box and a rotating ring in a connecting structure of the present invention.

[0022] Figure 6 The present invention is a schematic cross-sectional structure diagram of a positioning sleeve rod in a buoyancy box and a connection structure.

[0023] Figure 7 The figure is a schematic diagram of a buoyancy box and a connection structure of the present invention.

[0024] In the figure: 1. pontoon body; 2. hub; 21. frame plate; 22. guide rod; 221. positioning plate; 23. support frame; 24. traction rope; 25. guide rod; 26. guide plate; 3. movable pontoon; 31. positioning sleeve rod; 32. spring; 33. slide rod; 34. positioning rod; 35. mounting groove; 36. rotating ring; 361. limit ring; 362. annular groove; 37. drive motor; 38. rotating plate; 39. adjustment motor; 391. connecting plate; 4. monitoring module; 41. acoustic sensor; 42. image recognition sensor; 5. pressure sensing module; 6. PLC control unit. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with specific embodiments, wherein the accompanying drawings are only used for exemplary descriptions and represent only schematic diagrams rather than actual drawings, and should not be understood as limitations on this patent. In order to better illustrate the specific embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted. Based on the specific embodiments of the present invention, all other specific embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] Example 1

[0027] See also Figure 1-Figure 7A pontoon and connection structure, including a plurality of pontoon bodies 1, a hub 2 and a movable pontoon 3, a frame plate 21 is installed on one side of the hub 2, four guide rods 22 that fit the adjacent pontoon bodies 1 are fixedly connected to one side of the frame plate 21, and positioning rods 34 are slidably connected between the guide rods 22, a traction rope 24 is installed and connected to the driving end of the hub 2, one end of the traction rope 24 passes through the positioning rod 34, and one end of the traction rope 24 is connected to one side of the movable pontoon 3, and positioning sleeve rods 31 corresponding to the positioning rods 34 are installed on both sides of the movable pontoon 3, and a spring 32 is installed on the inner wall of the positioning sleeve rod 31. A sliding rod 33 matching the inner wall of the positioning sleeve rod 31 is installed at one end of the spring 32, and one end of the sliding rod 33 is connected to one side of the positioning rod 34, wherein a guide rod 25 is installed at one end of the two guide rods 22, and a guide plate 26 is installed on one side of two adjacent guide rods 22. A rotating ring 36 is rotatably connected to the bottom of the movable pontoon 3, and a rotating plate 38 is hinged on the inner wall of the rotating ring 36. A monitoring module 4 is installed on the movable pontoon 3, and the monitoring module 4 includes an acoustic sensor 41 and an image recognition sensor 42. A pressure sensing module 5 is installed on the movable pontoon 3, and a PLC control unit 6 is arranged in the movable pontoon 3.

[0028] In the present embodiment, a plurality of pontoon bodies 1 are spliced ​​and engaged with each other and connected and fixed with connecting clips, so as to provide a relatively stable working plane for various offshore operations, so as to facilitate the workers to carry out fish farming and other work on the floating platform. When the workers are working, since the floating platform is on the sea surface, it is affected by waves and currents and will cause it to shake, so the workers are prone to the risk of falling into the sea. At this time, the outermost pontoon bodies 1 can be connected and fixed by installing a hub 2 between the two pontoon bodies 1 to tow and fix the movable pontoon 3. The hub 2 and the movable pontoon 3 are connected and fixed by a towing rope 24, so that the movable pontoon 3 can be pulled by the hub 2 and the towing rope 24, so that the movable pontoon 3 is in the pontoon body. The floating platform is located between the floating body 1 and is located at the outermost part of the floating platform composed of the floating box body 1. When the staff falls into the sea, the floating platform can be monitored by the monitoring module 4 installed on the movable floating box 3. The interface between the floating platform and the sea surface is monitored by the monitoring module 4 using the acoustic sensor 41 and the image recognition sensor 42. When the staff falls, the monitoring module 4 can collect information, and the monitoring module 4 can be connected to the PLC control unit 6 signal through the monitoring module 4. After the monitoring data is transmitted to the PLC control unit 6, the PLC control unit 6 can control the hub 2 to release the traction rope 24. At the same time, the PLC control unit 6 drives and controls the rotating ring 36 and the rotating plate 38 connected to the bottom of the movable floating box 3. The PLC The control unit 6 drives the driving motor 37 to rotate the rotating plate 38, and the rotation of the rotating plate 38 can push the movable pontoon 3 to move on the sea surface, and cooperates with the image recognition sensor 42 to continuously transmit the monitoring information to the PLC control unit 6, so that the PLC control unit 6 controls the adjusting motor 39 to adjust the rotation direction of the rotating plate 38, so that the movable pontoon 3 can be moved to the position where the staff fell into the sea, so that the movable pontoon 3 can provide a platform for the staff to grab. When the staff who fell into the sea grabs the movable pontoon 3, the pressure signal of the outer wall of the movable pontoon 3 can be transmitted to the PLC control unit 6 through the pressure sensing module 5 installed on the outer wall of the movable pontoon 3. The PLC control unit 6 controls the hub 2 to reel in the traction rope 24 again. After 24 is reeled in, the movable pontoon 3 can drag the staff to the floating platform composed of the pontoon body 1, so as to provide timely rescue for the staff who fall into the sea and ensure the safety of the staff during operation. At the same time, when the movable pontoon 3 is pulled by the contraction of the traction rope 24, the frame plate 21 and the guide rod 22 installed on one side of the hub 2 are supported and limited between the pontoon body 1, so that the two pontoon bodies 1 adjacent to the movable pontoon 3 can be supported by them, ensuring that the distance between them changes under the shaking of the platform, making it inconvenient to release the movable pontoon 3 outward and retract it. When retracting, the positioning sleeve rods 31 fixedly connected on both sides of the movable pontoon 3 install the sliding rod 33, so that the positioning rod 34 fixedly connected at one end of the sliding rod 33 is supported and fixed at its front end position.The slide bar 33 is supported by the spring 32 so that it is supported to a position with a certain distance from the movable pontoon 3. When resetting the movable pontoon 3, the positioning rod 34 can first be guided by the guide rod 25 to slide to the position between the guide rods 22, and the guide plate 26 is adjusted again to allow the positioning rod 34 to slide between the guide rods 22. The positioning rod 34 and the movable pontoon 3 correspond horizontally through the positioning sleeve rod 31 and the slide bar 33, so that after the positioning rod 34 enters between the guide rods 22, the movable pontoon 3 can be pulled by the traction rope 24, so that the positioning sleeve rod 31 slides between the guide rods 22, so that the movable pontoon 3 is supported between the guide rods 22. When the movable pontoon 3 is constantly close to the position of the hub 2, the spring 32 has the elastic deformation characteristic, so that the slide bar 33 is retracted into the positioning sleeve rod 31, ensuring the resetting of the movable pontoon 3.

[0029] Among them, several pontoon bodies 1 are spliced ​​and engaged with each other, the movable pontoon 3 is located between the two pontoon bodies 1, the hub 2 is fixedly connected to one side of one of the pontoon bodies 1, and a support frame 23 is installed between every two corresponding guide rods 22, and the support frame 23 is staggered with the movable pontoon 3; the pontoon bodies 1 are spliced ​​and engaged with each other to ensure that the floating platform composed of the pontoon bodies 1 can be tightly connected, so as to provide the required working platform for the staff, the movable pontoon 3 is located between the two pontoon bodies 1, so that it can be normally assembled between the pontoon bodies 1, so that it and the pontoon body 1 form a whole, so that the movable pontoon 3 is spliced ​​and installed at the outermost part of the pontoon body 1, so as to facilitate real-time monitoring of the edge of the floating platform, the support frame 23 is used to fix the corresponding guide rods 22, so that the support frame 23 can be supported, so that the spacing between the guide rods 22 is fixed, and it is ensured that the movable pontoon 3 can be reset and released normally.

[0030] Among them, positioning plates 221 are fixedly connected at both ends of the frame plate 21, and the two positioning plates 221 are respectively located between two adjacent guide rods 22, and both ends of the positioning sleeve rod 31 and the positioning rod 34 are slidably connected to one side of the positioning plate 221, and the positioning sleeve rod 31 and the positioning rod 34 are in contact with the guide rod 22; the positioning plates 221 fixedly connected at both ends of the frame plate 21 are used to enable the positioning rod 34 to slide between the guide rods 22, so that the positioning plates 221 can support and limit the two ends of the positioning rod 34 and the positioning sleeve rod 31, ensure that the positioning rod 34 slides horizontally between the guide rods 22, and cooperates with the connection between the sliding rod 33 and the positioning sleeve rod 31 to guide the movable buoy 3 to be towed between the guide rods 22.

[0031] Among them, a mounting groove 35 matching the rotating ring 36 is opened at the bottom of the movable buoy 3, an annular groove 362 is opened on the inner wall of the mounting groove 35, and a limiting ring 361 matching the annular groove 362 is installed on the outer wall of the rotating ring 36, and the limiting ring 361 is slidably connected with the annular groove 362; the mounting groove 35 opened at the bottom of the movable buoy 3 can be used to install the rotating ring 36, and the limiting ring 361 fixedly connected to the outer wall of the rotating ring 36 is limited in the annular groove 362 opened on the inner wall of the mounting groove 35, so that the rotating ring 36 can rotate on the inner wall of the mounting groove 35, ensuring that the rotating plate 38 can push the movable buoy 3 to adjust its position while enabling its pushing direction to adjust its position.

[0032] Among them, the PLC control unit 6 signal is connected to the driving motor 37 and the adjusting motor 39, the driving end of the driving motor 37 is connected to one side of the rotating plate 38, a connecting plate 391 is installed on the inner wall of the rotating ring 36, and the driving end of the adjusting motor 39 is connected to the connecting plate 391; the connecting plate 391 fixedly connected to the top of the inner wall of the rotating ring 36 can be connected to the driving end of the adjusting motor 39, so that the adjusting motor 39 can drive the rotating ring 36 to rotate, and adjust the rotation direction of the rotating plate 38, so that after the driving motor 37 drives the rotating plate 38 to rotate, it can cooperate with the rotating ring 36 to rotate, so that the position of the movable buoy 3 can be driven to the position where the staff falls into the water.

[0033] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A buoyancy tank and connection structure, comprising a plurality of buoyancy tank bodies (1), a hub (2) and a movable buoyancy tank (3), characterized in that: A frame plate (21) is installed on one side of the hub (2), and four guide rods (22) that are in contact with the adjacent pontoon bodies (1) are fixedly connected to one side of the frame plate (21), and positioning rods (34) are slidably connected between the guide rods (22). A traction rope (24) is installed and connected to the driving end of the hub (2), and one end of the traction rope (24) passes through the positioning rod (34), and one end of the traction rope (24) is connected to one side of the movable pontoon (3). Positioning sleeve rods (31) corresponding to the positioning rods (34) are installed on both sides of the movable pontoon (3), and a spring (32) is installed on the inner wall of the positioning sleeve rod (31), and one end of the spring (32) is installed with a spring that is connected to the positioning sleeve rod ( 31) inner wall, one end of the sliding rod (33) is connected to one side of the positioning rod (34), wherein one end of the two guide rods (22) is installed with a guide rod (25), and one side of two adjacent guide rods (22) is installed with a guide plate (26), the bottom of the movable pontoon (3) is rotatably connected with a rotating ring (36), and the inner wall of the rotating ring (36) is hinged with a rotating plate (38), the movable pontoon (3) is installed with a monitoring module (4), and the monitoring module (4) includes an acoustic sensor (41) and an image recognition sensor (42), the movable pontoon (3) is installed with a pressure sensing module (5), and the movable pontoon (3) is provided with a PLC control unit (6).

2. A buoyancy tank and connection structure according to claim 1, characterized in that: A plurality of the pontoon bodies (1) are interlocked and spliced ​​with each other, the movable pontoon (3) is located between two of the pontoon bodies (1), the hub (2) is fixedly connected to one side of one of the pontoon bodies (1), a support frame (23) is installed between every two corresponding guide rods (22), and the support frame (23) is offset from the movable pontoon (3).

3. A buoyancy tank and connection structure according to claim 1, characterized in that: Positioning plates (221) are fixedly connected to both ends of the frame plate (21), and the two positioning plates (221) are respectively located between two adjacent guide rods (22). Both ends of the positioning sleeve rod (31) and the positioning rod (34) are slidably connected to one side of the positioning plates (221), and the positioning sleeve rod (31) and the positioning rod (34) are in close contact with the guide rod (22).

4. A buoyancy tank and connection structure according to claim 1, characterized in that: The bottom of the movable buoy (3) is provided with a mounting groove (35) matching the rotating ring (36), the inner wall of the mounting groove (35) is provided with an annular groove (362), the outer wall of the rotating ring (36) is provided with a limiting ring (361) matching the annular groove (362), and the limiting ring (361) is slidably connected to the annular groove (362).

5. A buoyancy tank and connection structure according to claim 1, characterized in that: The PLC control unit (6) is signal-connected to a drive motor (37) and an adjustment motor (39); a drive end of the drive motor (37) is connected to one side of the rotating plate (38); a connecting plate (391) is installed on the inner wall of the rotating ring (36); and a drive end of the adjustment motor (39) is connected to the connecting plate (391).

6. A buoyancy tank and connection structure according to claims 1-5, characterized in that: The following steps are involved: S1. A floating platform is formed by splicing pontoon bodies (1) to facilitate workers to carry out fish farming and other work. A hub (2) can be installed between two adjacent pontoon bodies (1) at a certain distance between the outermost pontoon bodies (1). A traction rope (24) connected to the driving end of the hub (2) can be connected to a movable pontoon (3), so that the movable pontoon (3) can be pulled by the hub (2) and the traction rope (24), so that the movable pontoon (3) is located between the pontoon bodies (1) and at the outermost part of the floating platform formed by the pontoon bodies (1). The monitoring module (4) installed on the movable pontoon (3) can monitor the interface between the floating platform and the sea surface under the action of an acoustic sensor (41) and an image recognition sensor (42); S2. When a worker accidentally falls into the sea, the acoustic sensor (41) and the image recognition sensor (42) can transmit the monitoring information of the falling into the sea to the PLC control unit (6), and the PLC control unit (6) controls the hub (2) to release the traction rope (24). At the same time, the PLC control unit (6) drives the rotating ring (36) and the rotating plate (38) connected to the bottom of the movable buoy (3). The PLC control unit (6) drives the rotating plate (38) to rotate through the driving motor (37), and cooperates with the image recognition sensor (42) to continuously transmit the monitoring information to the PLC control unit (6), so that the movable buoy (3) can be moved. The pontoon (3) can be displaced to the position where the staff member falls into the sea, so that the movable pontoon (3) can provide a platform for the staff member to grab. When the staff member who falls into the sea grabs the movable pontoon (3), the pressure signal received by the outer wall of the movable pontoon (3) can be transmitted to the PLC control unit (6) through the pressure sensor module (5) installed on the outer wall of the movable pontoon (3). The PLC control unit (6) controls the hub (2) again to reel in the traction rope (24), so that the movable pontoon (3) can drag the staff member to the floating platform formed by the pontoon body (1), so as to provide timely rescue for the staff member who falls into the sea and ensure the safety of the staff member during operation. S3. When the movable buoy (3) needs to be reset, the positioning rod (34) can be supported by the positioning sleeve rod (31) and the sliding rod (33) and the spring (32) to be located at the front end of one side of the movable buoy (3). When the traction rope (24) pulls the movable buoy (3), the positioning rod (34) is synchronously displaced therewith, and the positioning rod (34) corresponds to the horizontal position of the movable buoy (3). At this time, the positioning rod (34) can be guided and positioned by the guide rod (25) and the guide plate (26), so that the positioning rod (34) can slide between the guide rods (22), drive the movable buoy (3) to be pulled between the guide rods (22), and reset it, thereby preventing the distance between the buoy bodies (1) from changing easily and affecting the reset work of the movable buoy (3).

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