Ship-shore connection protection device and use method

Abstract

The invention provides a ship-shore connection protection device and a using method, the ship-shore connection protection device comprises a connection input pipe and a receiving transmission pipe, the outer wall of the receiving transmission pipe is sleeved with a movable sleeve and a baffle pressure spring, and the baffle pressure spring can provide elastic force for the movable sleeve to be close to the connection input pipe. The end part of the baffle pressure spring is connected with a sealing baffle through a traction strip, and when the baffle pressure spring is in a free state, the sealing baffle can block the connecting input pipe, and the pipeline is closed, so that the pipeline is isolated from the outside; when the receiving transmission pipe is inserted into the connecting input pipe, the end of the connecting input pipe pushes the movable sleeve to compress the baffle compression spring, the traction strip can pull the sealing baffle to be contained in the inner wall open groove of the connecting input pipe, and the pipeline is opened. The connecting input pipe and the receiving transmission pipe can be rapidly locked through the limiting assembly, stable transmission is achieved, the elastic potential energy of the compression spring is reasonably used in the whole process, and the needed purpose is achieved while each process can be simply operated to form a closed loop.

Description

Technical Field

[0001] The present invention relates to the technical field of ship transmission systems, and in particular to a ship-to-shore connection protection device and a use method thereof. Background Art

[0002] During the use of various transport ships, it is often necessary to load and unload various gases or liquids on the ships. The receiving and transmission pipes are directly exposed to the air for cargo transmission, which may cause leakage or other dangerous situations without being easily discovered. Therefore, it is necessary to design a ship-shore connection protection device to improve the sealing of the receiving and transmission pipes, while enhancing the locking convenience and unlocking speed during the transmission process.

[0003] Therefore, how to design a ship-shore connection protection device with good sealing performance, automatic locking of the connection, and quick unlocking and detachment is a technical problem that technical personnel in this field need to solve. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a ship-shore connection protection device, comprising a connecting input pipe and a receiving transmission pipe, wherein an annular groove is provided on the inner wall of the end where the connecting input pipe and the receiving transmission pipe are connected, and the annular groove is used to insert the receiving transmission pipe;

[0005] The outer wall of the receiving transmission tube is sleeved with a movable sleeve and a baffle compression spring, which are connected along the length direction of the receiving transmission tube, and the baffle compression spring is located at an end of the movable sleeve away from the connecting input tube. The movable sleeve can move along the length direction of the receiving transmission tube, and the baffle compression spring can provide elastic force for the movable sleeve to approach the connecting input tube;

[0006] The end of the baffle compression spring close to the movable sleeve is connected with a pulling strip, and the end of the pulling strip away from the baffle compression spring obliquely penetrates the movable sleeve and the receiving and transmitting tube into the inner cavity of the receiving and transmitting tube, and the end of the pulling strip away from the baffle compression spring is connected with a sealing baffle. When the baffle compression spring is in a free state, the sealing baffle can block the receiving and transmitting tube, and the pipeline is closed; when the receiving and transmitting tube is inserted into the annular groove of the connecting input tube, the end of the connecting input tube pushes the movable sleeve to compress the baffle compression spring, and the pulling strip can pull the sealing baffle to be accommodated in the inner wall groove of the receiving and transmitting tube, and the pipeline is opened.

[0007] Optionally, a limiting assembly is installed on the side wall of the annular groove along the radial direction of the connecting input pipe, and when the connecting input pipe is docked with the receiving transmission pipe, the limiting assembly can be snapped into a limiting groove located on the outer wall of the receiving transmission pipe to achieve locking.

[0008] Optionally, the limiting assembly includes a mounting hole opened on the side wall of the annular groove, the damping pull bolt passes through the mounting hole along the radial direction of the connecting input pipe, a pressure plate is fixed to the side wall of the damping pull bolt, and a pull bolt compression spring is connected to the surface of the pressure plate away from the inner cavity of the connecting input pipe to provide elastic force to the damping pull bolt toward the inner cavity of the connecting input pipe, and the limiting groove on the outer wall of the receiving transmission tube matches the damping pull bolt, thereby locking the receiving transmission tube.

[0009] Optionally, the mounting hole also accommodates a limit pin, which includes a pin body and a pressure block. The pressure block is fixed to the end of the pin body away from the inner cavity of the connecting input pipe. The surface of the pressure block away from the pin body is connected to a pin compression spring to provide elastic force for the pin body toward the inner cavity of the connecting input pipe. The pin body is arranged at a certain angle to the damping pull bolt, and the end of the damping pull bolt close to the inner cavity of the connecting input pipe is formed with an inclined surface that fits with the pin body, and the end of the pin body away from the pressure block is a round end.

[0010] Optionally, when the damping bolt is pulled outward and the end of the damping bolt close to the inner cavity of the connecting input pipe is retracted into the mounting hole, the locking of the receiving transmission pipe by the damping bolt can be released, so that the connecting input pipe is separated from the receiving transmission pipe, and the pin body is ejected under the action of the bayonet compression spring until the circular end of the pin body enters the inner cavity of the connecting input pipe. At this time, the limit bayonet is completely reset, and the inclined surface of the end of the damping bolt is in contact with the pin body, so that the pin body presses the damping bolt;

[0011] When the connecting input pipe is docked with the receiving transmission pipe, the end of the receiving transmission pipe contacts the circular end head and presses down on the circular end head, thereby releasing the pin body from pressing the damping pull bolt. The damping pull bolt pops out and enters the limiting groove under the action of the pull bolt compression spring, thereby locking the receiving transmission pipe.

[0012] Optionally, the inner diameters of the connecting input pipe and the receiving transmission pipe are the same, and the inner diameter of the annular groove is the same as the outer diameter of the receiving transmission pipe.

[0013] Optionally, when the baffle compression spring is in a free state, the end of the movable sleeve is aligned with the end of the receiving transmission tube.

[0014] Optionally, there are at least two pulling bars arranged opposite to each other, and when the sealing baffle is in a blocking state, the sealing baffle connected by the two pulling bars is arranged along the length direction of the receiving and transmitting tube.

[0015] Optionally, when the two sealing baffles are in a blocked state, a pressure alarm and a gas detector are installed on the inner wall of the receiving transmission pipe between the two sealing baffles.

[0016] The present invention also provides a method for using the ship-shore connection protection device, comprising the following steps:

[0017] S1: The transmission valves connecting the input pipe and the receiving transmission pipe remain closed, ready for docking;

[0018] S2: Connect the input pipe and the receiving transmission pipe horizontally, and the annular groove at the end of the input pipe fits with the outer wall of the receiving transmission pipe;

[0019] S3: Push the connecting input pipe toward the receiving transmission pipe, so that the end of the connecting input pipe squeezes the movable sleeve sleeved on the outer wall of the receiving transmission pipe, and the baffle compression spring contracts, driving the sealing baffle to move and be accommodated in the inner wall groove of the receiving transmission pipe;

[0020] S4: When the connecting input pipe and the receiving transmission pipe are connected to a certain position, the end of the receiving transmission pipe squeezes the circular end of the limit bayonet pin body, and the bayonet pin compression spring contracts downward to store elastic potential energy, and the damping pull bolt restriction is released. When the damping pull bolt is facing the limit groove, the pull bolt compression spring releases the elastic potential energy to insert it into the limit groove, and the connection is locked;

[0021] S5: The receiving transmission tube is locked by the damping bolt and the limiting groove, and will not slip or move in the axial and radial directions;

[0022] S6: Open the transmission valve connecting the input pipe and the receiving transmission pipe to start transmission;

[0023] S7: After the transmission is completed, the transmission valve connecting the input pipe and the receiving transmission pipe is closed;

[0024] S8: Pull down the damping bolt, the baffle compression spring releases elastic potential energy to push the connecting input pipe and the receiving transmission pipe to separate, and the sealing baffle gradually resets; when it moves to a certain position, the bayonet compression spring releases elastic potential energy until the limit bayonet resets, and the damping bolt is constrained;

[0025] S9: The transmission operation ends.

[0026] As described above, the ship-shore connection protection device and use method provided by the present invention have the following beneficial effects:

[0027] 1. Good safety. When the receiving transmission pipe end leaks in the non-connected state, it can be discovered and corresponding measures can be taken immediately to avoid greater safety hazards.

[0028] 2. Good sealing. When the goods are not being transported, the sealing baffle can isolate the outside world and protect the internal components. When connected, the damping bolt fits the positioning groove to prevent axial displacement during the transmission process, so that the entire pipeline is always in a sealed state during the connection process to prevent leakage during transmission in the pipe.

[0029] 3. The connection is fast. The connection is locked quickly through the squeezing of the movable sleeve by the input pipe and the operation of the limit device. The connection and locking can be completed in a very short time.

[0030] 4. Easy to disengage. When the transmission is finished and ready to disengage, by pulling the damping bolt, the elastic potential energy inside the system is released, and the connecting input pipe and the receiving transmission pipe are automatically disengaged.

[0031] 5. Easy to operate. The elastic potential energy of the compression spring is used rationally throughout the process, so that each process can be simply operated to form a closed loop and achieve the desired purpose. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It shows a schematic diagram of the structure before the input tube and the receiving transmission tube are connected to each other in the first embodiment of the present invention.

[0033] Figure 2 It shows a schematic diagram of the structure of the receiving transmission tube in the first embodiment of the present invention.

[0034] Figure 3 It is a schematic diagram of the structure after the input tube and the receiving transmission tube are connected and docked in the first embodiment of the present invention.

[0035] Figure 4 It is a schematic diagram of the structure of the damping pull bolt in the first embodiment of the present invention when it is pulled out.

[0036] Figure 5 It is a schematic diagram showing the state structure of the damping pull bolt being stuck in the limiting groove in the first embodiment of the present invention.

[0037] Component number description

[0038] Connecting input pipe 11; receiving transmission pipe 12; movable sleeve 13; baffle compression spring 14; limiting assembly 31; limiting groove 32; pulling strip 103; sealing baffle 102; annular groove 101; pressure alarm 104; gas detector 105; damping pull bolt 301; pull bolt compression spring 302; limiting bayonet 303; bayonet compression spring 304; pressure plate 3011; pin body 3031; pressure block 3032. DETAILED DESCRIPTION

[0039] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0040] For example, when describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional view showing the device structure will not be partially enlarged according to the general scale, and the schematic view is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional space dimensions of length, width and depth should be included.

[0041] For ease of description, spatial relational terms such as "under", "below", "below", "below", "above", "on", etc. may be used herein to describe the relationship of one element or feature shown in the drawings to other elements or features. It will be understood that these spatial relational terms are intended to include other directions of the device in use or operation in addition to the directions depicted in the drawings. In addition, when a layer is referred to as being "between" two layers, it can be the only layer between the two layers, or there can be one or more intervening layers. As used herein, "between..." means including the end point values.

[0042] In the context of the present application, a structure in which a first feature is described as being "above" a second feature may include embodiments in which the first and second features are formed in direct contact, and may also include embodiments in which additional features are formed between the first and second features, such that the first and second features may not be in direct contact.

[0043] It should be noted that the illustrations provided in this embodiment are only used to illustrate the basic concept of the present invention in a schematic manner, and therefore the illustrations only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0044] Embodiment 1

[0045] like Figures 1 to 5 As shown, this embodiment provides a ship-shore connection protection device, including a connecting input pipe 11 and a receiving transmission pipe 12;

[0046] An annular groove 101 is provided on the inner wall of the end where the connecting input pipe 11 and the receiving transmission pipe 12 are connected. The annular groove 101 is used to insert the receiving transmission pipe 12. The inner diameters of the connecting input pipe 11 and the receiving transmission pipe 12 are the same, and the inner diameter of the annular groove is the same as the outer diameter of the receiving transmission pipe.

[0047] The outer wall of the receiving and transmitting tube 12 is sleeved with a movable sleeve 13 and a baffle compression spring 14, which are connected along the length direction of the receiving and transmitting tube 12, and the baffle compression spring 14 is located at the end of the movable sleeve 13 away from the connecting input tube 11, and the end of the baffle compression spring 14 away from the movable sleeve 13 is fixedly connected to the receiving and transmitting tube 12; the movable sleeve 13 can move along the length direction of the receiving and transmitting tube 12, and the baffle compression spring 14 can provide elastic force for the movable sleeve 13 to approach the connecting input tube 11. When the baffle compression spring 14 is in a free state, the end of the movable sleeve 13 is aligned with the end of the receiving and transmitting tube 12.

[0048] Furthermore, a limiting component 31 is installed on the side wall of the annular groove along the radial direction of the connecting input pipe, and the limiting component 31 can be inserted into a limiting groove 32 located on the outer wall of the receiving transmission pipe 12 to achieve locking.

[0049] Furthermore, the end of the baffle compression spring 14 close to the movable sleeve 13 is connected to a pulling strip 103, and the end of the pulling strip 103 away from the baffle compression spring 14 obliquely penetrates the movable sleeve 13 and the receiving and transmitting tube 12 to enter the inner cavity of the receiving and transmitting tube 12, and the end of the pulling strip 103 away from the baffle compression spring 14 is connected to a sealing baffle 102. When the baffle compression spring 14 is in a free state, the sealing baffle 102 can block the receiving and transmitting tube 12, and the pipeline is closed; when the receiving and transmitting tube 12 is inserted into the annular groove of the connecting input tube 11, the end of the connecting input tube 11 pushes the movable sleeve 13 to compress the baffle compression spring 14, and the pulling strip 103 can pull the sealing baffle 102 to be received in the inner wall groove of the receiving and transmitting tube 12, and the pipeline is opened.

[0050] Furthermore, the pulling bars 103 are at least two oppositely arranged, and the sealing baffles 102 connected to the two pulling bars 103 are arranged along the length direction of the receiving and transmitting tube 12. That is, a double-layer sealing baffle is provided to isolate the receiving and transmitting tube from the outside when it is not in use, to prevent dust, water vapor, etc. from entering the pipeline, thereby achieving the purpose of protecting the internal components.

[0051] When the end of the movable sleeve 13 is under pressure, it can move along the receiving and transmitting pipe 12 and squeeze the baffle compression spring 14. The baffle compression spring 14 is compressed and deformed, driving the sealing baffle 102 to move. The sealing baffle 102 is received in the inner wall groove of the connecting input pipe, and the receiving and transmitting pipe 12 is connected with the connecting input pipe 11. When the end of the movable sleeve 13 is no longer under force, the elastic potential energy of the baffle compression spring 14 is released, and the sealing baffle 102 returns to its original position along the limiting track, achieving a sealing effect and isolating from the outside.

[0052] Specifically, as an implementation, the pull bar and the sealing baffle can be an integrally formed flexible component, so that they can be deformed under the push-pull action of the end of the baffle compression spring, and cooperate with the limiting track set on the pipe wall to achieve the storage or expansion of the sealing baffle and the opening and closing of the pipeline; as another implementation, the pull bar can be a connecting rod structure, and the connecting rod structure cooperates with the limiting track set on the pipe wall to achieve the change of the rotation angle of the sealing baffle relative to the pull bar, so as to achieve the storage or expansion of the sealing baffle. Regarding the opening and closing design of the sealing baffle, there are mature solutions in the prior art, which will not be introduced here.

[0053] Furthermore, when the two sealing baffles 102 are in a blocked state, a pressure alarm 104 and a gas detector 105 are installed on the inner wall of the receiving transmission pipe section between the two sealing baffles 102 .

[0054] In the non-connected state, that is, the connection input pipe 11 and the receiving transmission pipe 12 are disconnected, the sealing baffle is in a blocked state, and the pressure alarm 104 is turned on. When gas leakage or volatile gas overflow occurs in the receiving transmission pipe, and the pressure change between the two baffles exceeds the set warning value, the pressure alarm sends an alarm signal to the local control station and the ship integrated control system. The setting of the alarm pressure warning value is related to the material of the receiving transmission pipe, the goods transmitted by the pipeline, and the temperature of the goods in the pipeline.

[0055] In the non-connected state, the gas detector 105 is also turned on synchronously. The gas detector is used to detect the gas composition between the two sealing baffles so that gas leakage can be discovered in time.

[0056] Furthermore, the limiting assembly 31 includes a mounting hole opened on the side wall of the annular groove 101, the damping bolt 301 passes through the mounting hole along the radial direction of the connecting input pipe 11, a pressure plate 3011 is fixed to the side wall of the damping bolt 301, and a bolt compression spring 302 is connected to the surface of the pressure plate 3011 away from the inner cavity of the connecting input pipe to provide elastic force for the damping bolt 301 toward the inner cavity of the connecting input pipe. The outer wall of the receiving transmission pipe 12 is provided with a limiting groove 32 matching the damping bolt, so as to achieve locking of the receiving transmission pipe 12.

[0057] The mounting hole also accommodates a limit pin 303, which includes a pin body 3031 and a pressure block 3032. The pressure block 3032 is fixed to the end of the pin body 3031 away from the inner cavity of the connecting input pipe. The surface of the pressure block 3032 away from the pin body 3031 is connected to a pin compression spring 304 to provide elastic force for the pin body 3031 toward the inner cavity of the connecting input pipe. The pin body 3031 is arranged at a certain angle to the damping pull bolt 301. The end of the damping pull bolt 301 close to the inner cavity of the connecting input pipe is formed with an inclined surface that fits the pin body 3031, and the end of the pin body 3031 away from the pressure block is a round end.

[0058] When the damping bolt 301 is pulled outward and the end of the damping bolt 301 close to the inner cavity of the connecting input pipe retracts into the mounting hole, the locking of the damping bolt 301 on the receiving transmission pipe 12 can be released, so that the connecting input pipe 11 is separated from the receiving transmission pipe 12, and the pin body 3031 pops out under the action of the pin compression spring 304 until the circular end of the pin body 3031 enters the inner cavity of the connecting input pipe, that is, the limit pin 303 is completely reset, and the inclined surface at the end of the damping bolt 301 fits with the pin body 3031, so that the pin body 3031 forms a constraint and suppression on the damping bolt 301.

[0059] When the connecting input pipe 11 is connected to the receiving transmission pipe 12, the end of the receiving transmission pipe 11 contacts the circular end head and presses down the circular end head, thereby releasing the pressing of the damping pull bolt 301 by the pin body 3031. The damping pull bolt 301 pops out and enters the limiting groove under the action of the pull bolt compression spring 302, thereby locking the receiving transmission pipe. Figure 5 shown.

[0060] Embodiment 2

[0061] Based on the ship-shore connection protection device in the first embodiment, this embodiment provides a method for using the ship-shore connection protection device, including the following steps:

[0062] S1: The transmission valves connecting the input pipe 11 and the receiving transmission pipe 12 are kept closed, and the input pipe 11 and the receiving transmission pipe 12 are connected to each other.

[0063] S2: The input pipe 11 is connected horizontally with the receiving transmission pipe 12, and the annular groove at the end of the input pipe 11 is fitted with the outer wall of the receiving transmission pipe 12, and the axial movement of the pipe is constrained, and the pipe can move axially forward and backward.

[0064] S3: Push the connecting input tube 11 toward the receiving transmission tube 12, the end of the connecting input tube 11 squeezes the movable sleeve 13 sleeved on the outer wall of the receiving transmission tube 12, and the baffle compression spring 14 contracts, driving the sealing baffle 102 to move and be accommodated in the inner wall groove of the receiving transmission tube 12.

[0065] S4: When the connecting input pipe 11 and the receiving transmission pipe 12 are connected to a certain position, the end of the receiving transmission pipe 12 squeezes the circular end of the limit pin 303, and the pin compression spring 304 contracts downward to store elastic potential energy, and the restriction of the damping pull bolt 301 is released. When the damping pull bolt 301 is facing the limit groove, the pull bolt compression spring releases the elastic potential energy to insert it into the limit groove 32, and the connection is locked.

[0066] S5: The receiving transmission tube 12 is locked by the damping pull bolt 301 and the limiting groove 32, and will not slip or move in the axial direction or radial direction.

[0067] S6: Open the transmission valves of the connecting input pipe 11 and the receiving transmission pipe 12 to start transmission. During the transmission process, when the connecting input pipe moves or stretches, the damping pull bolt limits and constrains it.

[0068] S7: After the transmission is completed, the transmission valve connecting the input pipe 11 and the receiving transmission pipe 12 is closed.

[0069] S8: Pull down the damping bolt 301, the baffle compression spring 14 releases elastic potential energy to push the connecting input pipe 11 and the receiving transmission pipe 12 to separate, and the sealing baffle 102 gradually returns to its original position. When it moves to a certain position, the bayonet compression spring 304 releases elastic potential energy until the limit bayonet 303 returns to its original position, and the damping bolt 301 is constrained.

[0070] S9: The transmission operation ends.

[0071] Before or after the connection, the sealing baffle isolates the internal components from the outside world to protect the internal components. When a gas leak occurs, the gas detector and pressure alarm can be used to know the leak so that relevant measures can be taken as soon as possible. In addition, this connection protection device can also be used for liquid transmission and electrical component protection to prevent circuit short circuits.

[0072] In summary, the present invention provides a ship-shore connection protection device and a method of use. The ship-shore connection protection device includes a connecting input pipe and a receiving transmission pipe. The outer wall of the receiving transmission pipe is provided with a movable sleeve and a baffle compression spring. The baffle compression spring can provide elastic force for the movable sleeve to approach the connecting input pipe. The end of the baffle compression spring is connected to a sealing baffle through a pulling strip. When the baffle compression spring is in a free state, the sealing baffle can block the connecting input pipe, and the pipeline is closed, thereby isolating the receiving transmission pipe from the outside when the receiving transmission pipe is not in use; when the receiving transmission pipe is inserted into the connecting input pipe, the end of the connecting input pipe pushes the movable sleeve to compress the baffle compression spring, and the pulling strip can pull the sealing baffle to be stored in the inner wall groove of the connecting input pipe, and the pipeline is opened. The limit assembly can quickly lock the connecting input pipe and the receiving transmission pipe to achieve stable transmission. The elastic potential energy of the compression spring is reasonably used in the whole process, so that each process can be simply operated to form a closed loop while achieving the desired purpose.

[0073] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A ship-shore connection protection device, characterized in that: It includes a connecting input pipe and a receiving transmission pipe, wherein the inner wall of the end where the connecting input pipe and the receiving transmission pipe are connected is provided with an annular groove, and the annular groove is used for plugging the receiving transmission pipe; The outer wall of the receiving transmission tube is sleeved with a movable sleeve and a baffle compression spring, which are connected along the length direction of the receiving transmission tube, and the baffle compression spring is located at an end of the movable sleeve away from the connecting input tube. The movable sleeve can move along the length direction of the receiving transmission tube, and the baffle compression spring can provide elastic force for the movable sleeve to approach the connecting input tube; The end of the baffle compression spring close to the movable sleeve is connected with a pulling strip, and the end of the pulling strip away from the baffle compression spring obliquely penetrates the movable sleeve and the receiving and transmitting tube into the inner cavity of the receiving and transmitting tube, and the end of the pulling strip away from the baffle compression spring is connected with a sealing baffle. When the baffle compression spring is in a free state, the sealing baffle can block the receiving and transmitting tube, and the pipeline is closed; when the receiving and transmitting tube is inserted into the annular groove of the connecting input tube, the end of the connecting input tube pushes the movable sleeve to compress the baffle compression spring, and the pulling strip can pull the sealing baffle to be accommodated in the inner wall groove of the receiving and transmitting tube, and the pipeline is opened.

2. The ship-shore connection protection device according to claim 1, characterized in that: The side wall of the annular groove is provided with a limiting assembly along the radial direction of the connecting input pipe. When the connecting input pipe is docked with the receiving transmission pipe, the limiting assembly can be inserted into the limiting groove on the outer wall of the receiving transmission pipe to achieve locking.

3. The ship-shore connection protection device according to claim 2, characterized in that: The limiting assembly includes a mounting hole opened on the side wall of the annular groove, and the damping pull bolt passes through the mounting hole along the radial direction of the connecting input pipe. A pressure plate is fixed to the side wall of the damping pull bolt, and a pull bolt compression spring is connected to the surface of the pressure plate away from the inner cavity of the connecting input pipe to provide elastic force to the damping pull bolt toward the inner cavity of the connecting input pipe, and the limiting groove on the outer wall of the receiving transmission tube matches the damping pull bolt, thereby locking the receiving transmission tube.

4. The ship-shore connection protection device according to claim 3, characterized in that: The mounting hole also accommodates a limit pin, which includes a pin body and a pressure block. The pressure block is fixed to the end of the pin body away from the inner cavity of the connecting input pipe. The surface of the pressure block away from the pin body is connected with a pin compression spring to provide elastic force for the pin body toward the inner cavity of the connecting input pipe. The pin body is arranged at a certain angle to the damping pull bolt, and the end of the damping pull bolt close to the inner cavity of the connecting input pipe is formed with an inclined surface that fits with the pin body, and the end of the pin body away from the pressure block is a round end.

5. The ship-shore connection protection device according to claim 4, characterized in that: When the damping bolt is pulled outward and the end of the damping bolt close to the inner cavity of the connecting input pipe is retracted into the mounting hole, the locking of the receiving transmission pipe by the damping bolt can be released, so that the connecting input pipe is separated from the receiving transmission pipe, and the pin body is ejected under the action of the bayonet compression spring until the circular end of the pin body enters the inner cavity of the connecting input pipe. At this time, the limit bayonet is completely reset, and the inclined surface of the end of the damping bolt is in contact with the pin body, so that the pin body presses the damping bolt; When the connecting input pipe is docked with the receiving transmission pipe, the end of the receiving transmission pipe contacts the circular end head and presses down on the circular end head, thereby releasing the pin body from pressing the damping pull bolt. The damping pull bolt pops out and enters the limiting groove under the action of the pull bolt compression spring, thereby locking the receiving transmission pipe.

6. The ship-shore connection protection device according to claim 1, characterized in that: The inner diameters of the connecting input pipe and the receiving transmission pipe are the same, and the inner diameter of the annular groove is the same as the outer diameter of the receiving transmission pipe.

7. The ship-shore connection protection device according to claim 1, characterized in that: When the baffle compression spring is in a free state, the end of the movable sleeve is aligned with the end of the receiving transmission tube.

8. The ship-shore connection protection device according to claim 1, characterized in that: There are at least two pulling bars arranged opposite to each other. When the sealing baffle is in a blocking state, the sealing baffle connected by the two pulling bars is arranged along the length direction of the receiving and transmitting tube.

9. The ship-shore connection protection device according to claim 8, characterized in that: When the two sealing baffles are in a blocking state, a pressure alarm and a gas detector are installed on the inner wall of the receiving transmission pipe between the two sealing baffles.

10. A method for using the ship-shore connection protection device according to any one of claims 4 to 8, characterized in that: The steps include: S1: The transmission valves connecting the input pipe and the receiving transmission pipe remain closed, ready for docking; S2: Connect the input pipe and the receiving transmission pipe horizontally, and the annular groove at the end of the input pipe fits with the outer wall of the receiving transmission pipe; S3: Push the connecting input pipe toward the receiving transmission pipe, so that the end of the connecting input pipe squeezes the movable sleeve sleeved on the outer wall of the receiving transmission pipe, and the baffle compression spring contracts, driving the sealing baffle to move and be accommodated in the inner wall groove of the receiving transmission pipe; S4: When the connecting input pipe and the receiving transmission pipe are connected to a certain position, the end of the receiving transmission pipe squeezes the circular end of the limit bayonet pin body, and the bayonet pin compression spring contracts downward to store elastic potential energy, and the damping pull bolt restriction is released. When the damping pull bolt is facing the limit groove, the pull bolt compression spring releases the elastic potential energy to insert it into the limit groove, and the connection is locked; S5: The receiving transmission tube is locked by the damping bolt and the limiting groove, and will not slip or move in the axial and radial directions; S6: Open the transmission valve connecting the input pipe and the receiving transmission pipe to start transmission; S7: After the transmission is completed, the transmission valve connecting the input pipe and the receiving transmission pipe is closed; S8: Pull down the damping bolt, the baffle compression spring releases elastic potential energy to push the connecting input pipe and the receiving transmission pipe to separate, and the sealing baffle gradually resets; when it moves to a certain position, the bayonet compression spring releases elastic potential energy until the limit bayonet resets, and the damping bolt is constrained; S9: The transmission operation ends.

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