A ship-shore connection protection device and method of use

Abstract

The application provides a ship-shore connection protection device and a use method. The ship-shore connection protection device comprises a connection input pipe and a receiving transmission pipe. An outer wall of the receiving transmission pipe is sleeved with a movable sleeve and a baffle compression spring. The baffle compression spring can provide an elastic force to the movable sleeve to make the movable sleeve close to the connection input pipe. An end of the baffle compression spring is connected with a sealing baffle through a pulling strip. When the baffle compression spring is in a free state, the sealing baffle can block the connection input pipe, the pipeline is closed, and the pipeline is isolated from the outside world. When the receiving transmission pipe is inserted into the connection input pipe, the end of the connection input pipe pushes the movable sleeve to compress the baffle compression spring. The pulling strip can pull the sealing baffle to be accommodated in a slot in the inner wall of the connection input pipe, and the pipeline is opened. A limiting assembly can quickly lock the connection input pipe and the receiving transmission pipe, realize stable transmission, and make the whole process reasonably use the elastic potential energy of the spring, so that each process can be simply operated to form a closed loop and achieve the required purpose.

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 that are not easy to be 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 needs to be solved by those skilled in the art. 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 and transmitting pipe, wherein an annular groove is formed on the inner wall of the end where the connecting input pipe and the receiving and transmitting pipe are connected, and the annular groove is used to insert the receiving and transmitting pipe;

[0005] The outer wall of the receiving and transmitting tube is provided with a movable sleeve and a baffle compression spring, which are connected along the length direction of the receiving and transmitting tube. The baffle compression spring is located at the end of the movable sleeve away from the connecting input tube. The movable sleeve can move along the length direction of the receiving and transmitting tube, and the baffle compression spring can provide an 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 to 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 to 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. When the connecting input pipe is docked with the receiving transmission pipe, the limiting assembly can be locked into the limiting groove on the outer wall of the receiving transmission pipe.

[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 achieving locking of 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 pull bolt is pulled outward and the end of the damping pull bolt close to the inner cavity of the connecting input pipe retracts into the mounting hole, the locking of the damping pull bolt on the receiving transmission pipe can be released, so that the connecting input pipe is separated from the receiving transmission pipe, and the pin body pops out 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 pull bolt is in contact with the pin body, so that the pin body presses the damping pull 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 and transmitting pipe are the same, and the inner diameter of the annular groove is the same as the outer diameter of the receiving and transmitting 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 and transmitting 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 and transmitting 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 fit the annular groove at the end of the input pipe with the outer wall of the receiving transmission pipe;

[0019] S3: Push the connecting input pipe toward the receiving transmission pipe. The end of the connecting input pipe presses against the movable sleeve on the outer wall of the receiving transmission pipe. The baffle compression spring contracts, driving the sealing baffle to move and be accommodated in the groove on the inner wall 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 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: The transmission is completed, and the transmission valve connecting the input pipe and the receiving transmission pipe is closed;

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

[0025] S9: The transfer 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 disconnected state, it can be discovered immediately and corresponding measures can be taken to avoid greater safety hazards.

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

[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 tube and the receiving transmission tube are automatically disengaged.

[0031] 5. Easy to operate. The whole process rationally utilizes the elastic potential energy of the compression spring, 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 pipe and the receiving and transmitting pipe are connected in the first embodiment of the present invention.

[0033] Figure 2 Shown is a structural schematic diagram of the receiving transmission tube in Example 1 of the present invention.

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

[0035] Figure 4 It is a schematic structural diagram of the state in which the damping pull bolt is pulled out in the first embodiment of the present invention.

[0036] Figure 5 It is a schematic structural diagram showing the state in which the damping pull bolt is locked 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. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered 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, cross-sectional views of device structures may be partially enlarged to scale for ease of explanation. Furthermore, these schematic views are merely illustrative and should not limit the scope of the present invention. Furthermore, in actual manufacturing, three-dimensional dimensions, including length, width, and depth, should be included.

[0041] For ease of description, spatially relative terms such as "under," "below," "below," "below," "above," and "on" may be used herein to describe the relationship of one element or feature to other elements or features shown in the drawings. It will be understood that these spatially relative terms are intended to encompass orientations of the device in use or operation in addition to the orientation depicted in the drawings. Additionally, when a layer is referred to as being "between" two layers, it can be the only layer between the two layers, or one or more intervening layers may be present. As used herein, "between" is inclusive of both endpoints.

[0042] In the context of the present application, a structure described as a first feature being "above" a second feature may include embodiments where the first and second features are formed in direct contact, and may also include embodiments where an additional feature is 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 schematically illustrate the basic concept of the present invention. Therefore, the illustrations only show components related to the present invention and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0044] Example 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 plug in 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 sheathed with a movable sleeve 13 and a baffle compression spring 14. The movable sleeve 13 and the baffle compression spring 14 are connected along the length of the receiving and transmitting tube 12. The baffle compression spring 14 is located at the end of the movable sleeve 13 away from the connection 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 of the receiving and transmitting tube 12, and the baffle compression spring 14 can provide elastic force to move the movable sleeve 13 closer to the connection 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 locked into a limiting groove 32 located on the outer wall of the receiving and transmitting 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 into 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 stored in the inner wall groove of the receiving and transmitting tube 12, and the pipeline is opened.

[0050] Furthermore, there are at least two pull bars 103 arranged opposite to each other, and the sealing baffle 102 connected to the two pull bars 103 is arranged along the length of the receiving and transmitting tube 12. In other words, a double-layer sealing baffle is provided to isolate the receiving and transmitting tube from the outside when it is not in use, preventing dust, moisture, etc. from entering the tube, thereby protecting the internal components.

[0051] When pressure is applied to the end of movable sleeve 13, it moves along receiving and transmitting pipe 12, squeezing baffle spring 14. This pressure deforms baffle spring 14, driving sealing baffle 102 to move. Sealing baffle 102 is then retracted into the groove in the inner wall of the connecting input pipe, connecting receiving and transmitting pipe 12 with connecting input pipe 11. When the force is removed from the end of movable sleeve 13, the elastic potential energy of baffle spring 14 is released, and sealing baffle 102 returns to its original position along the limiting track, achieving a sealed effect and isolating the device from the outside world.

[0052] Specifically, as one embodiment, the pull bar and sealing baffle can be an integrally formed flexible component, which can be deformed under the push-pull action of the end of the baffle compression spring, and cooperate with a limiting track set on the pipe wall to achieve the storage or deployment of the sealing baffle, thereby opening and closing the pipeline. As another embodiment, the pull bar can be a connecting rod structure, which 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, thereby achieving the storage or deployment of the sealing baffle. Regarding the opening and closing design of the sealing baffle, mature solutions are already available in the existing technology and will not be discussed in detail 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 and transmitting pipe section between the two sealing baffles 102 .

[0054] In the disconnected state, that is, when the input pipe 11 and the receiving and transmitting pipe 12 are disconnected and the sealing baffle is blocked, the pressure alarm 104 is activated. If a gas leak or volatile gas overflow occurs in the receiving and transmitting pipe, and the pressure change between the two baffles exceeds the set warning value, the pressure alarm will send an alarm signal to the local control station and the ship's integrated control system. The setting of the alarm pressure warning value is related to the receiving and transmitting pipe material, the product being transported through the pipe, and the temperature of the product in the pipe.

[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 stopper assembly 31 includes a mounting hole formed in the sidewall of the annular groove 101. The damping bolt 301 extends radially through the mounting hole along the connecting input pipe 11. A pressure plate 3011 is fixed to the sidewall of the damping bolt 301. A bolt compression spring 302 is connected to the surface of the pressure plate 3011 facing away from the inner cavity of the connecting input pipe to provide elastic force to urge the damping bolt 301 toward the inner cavity of the connecting input pipe. A stopper groove 32 is provided on the outer wall of the receiving and transmitting pipe 12 to match the damping bolt, thereby locking the receiving and transmitting 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 set at a certain angle to the damping pull bolt 301, and 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 with 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 lock 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 of the end of the damping bolt 301 is in contact 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 docked with 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 pressure of the pin body 3031 on the damping pull bolt 301. 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] Example 2

[0061] Based on the ship-shore connection protection device in Example 1, 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 remain 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 to the receiving and transmitting pipe 12. The annular groove at the end of the input pipe 11 fits with the outer wall of the receiving and transmitting pipe 12. The axial movement of the pipe is constrained and the pipe can move axially forward and backward.

[0064] S3: Push the connecting input pipe 11 toward the receiving transmission pipe 12. The end of the connecting input pipe 11 squeezes the movable sleeve 13 on the outer wall of the receiving transmission pipe 12. The baffle compression spring 14 contracts, driving the sealing baffle 102 to move and be accommodated in the groove on the inner wall of the receiving transmission pipe 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 connection input pipe 11, the transmission valve of the receiving transmission pipe 12, and start transmission. During transmission, the damping pull bolt limits and constrains the movement or stretching of the connection input pipe.

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

[0069] S8: pull down the damping pull bolt 301, and the blocking spring 14 releases the elastic potential energy to push the connection input pipe 11 and the receiving transmission pipe 12 to separate, and the sealing baffle 102 gradually resets. When the movable sleeve reaches a certain position, the pin spring 304 releases the elastic potential energy until the limiting pin 303 resets, and the damping pull bolt 301 is constrained.

[0070] S9: the transmission operation is completed.

[0071] Before or after connection, the sealing baffle isolates the internal components from the outside, achieving the effect of protecting the internal components. When gas leakage occurs, the leakage can be known through the gas detector and the pressure alarm, so that relevant measures can be taken as soon as possible. In addition, this connection protection device can also be applied to liquid transmission, and can also be applied to electrical component protection, and can prevent circuit short circuit.

[0072] In summary, the ship-shore connection protection device and the use method provided by the present application include a connection input pipe and a receiving transmission pipe, a movable sleeve and a baffle spring are sleeved on the outer wall of the receiving transmission pipe, and the baffle spring can provide an elastic force to the movable sleeve close to the connection input pipe. The end of the baffle spring is connected with a sealing baffle through a pull bar, when the baffle spring is in a free state, the sealing baffle can block the connection input pipe, and the pipeline is closed, so that isolation from the outside is realized when the receiving transmission pipe is not used; when the receiving transmission pipe is inserted into the connection input pipe, the end of the connection input pipe pushes the movable sleeve to compress the baffle spring, and the pull bar can pull the sealing baffle to be accommodated in the inner wall slot of the connection input pipe, and the pipeline is opened. The limiting assembly can quickly lock the connection input pipe and the receiving transmission pipe, realize stable transmission, and reasonably use the elastic potential energy of the spring in the whole process, so that each process can be simply operated to form a closed loop and achieve the required purpose.

[0073] The above embodiments only exemplarily illustrate the principles and effects of the present application, and are not used to limit the present application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the present application should be covered by the claims of the present application.

Claims

1. A ship-shore connection protection device, characterized in that: It includes a connecting input pipe and a receiving and transmitting pipe. The inner wall of the end where the connecting input pipe and the receiving and transmitting pipe are connected is provided with an annular groove, and the annular groove is used to plug in the receiving and transmitting pipe. The outer wall of the receiving and transmitting tube is provided with a movable sleeve and a baffle compression spring, which are connected along the length direction of the receiving and transmitting tube. The baffle compression spring is located at the end of the movable sleeve away from the connecting input tube. The movable sleeve can move along the length direction of the receiving and transmitting tube, and the baffle compression spring can provide an 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 to 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 to 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: A limiting assembly is installed on the side wall of the annular groove 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 locked into the limiting groove on the outer wall of the receiving transmission pipe.

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 for the damping pull bolt toward the inner cavity of the connecting input pipe. The limiting groove on the outer wall of the receiving transmission pipe matches the damping pull bolt, thereby achieving locking of the receiving transmission pipe.

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 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.

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 retracts into the mounting hole, the locking of the damping bolt on the receiving transmission pipe can be released, so that the connecting input pipe is separated from the receiving transmission pipe. The pin body pops out 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 fits 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 fit the annular groove at the end of the input pipe with the outer wall of the receiving transmission pipe; S3: Push the connecting input pipe toward the receiving transmission pipe. The end of the connecting input pipe presses against the movable sleeve on the outer wall of the receiving transmission pipe. The baffle compression spring contracts, driving the sealing baffle to move and be accommodated in the groove on the inner wall 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 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: The transmission is completed, and the transmission valve connecting the input pipe and the receiving transmission pipe is closed; S8: Pull down the damping bolt, and the baffle compression spring releases its elastic potential energy to push the connecting input pipe and the receiving transmission pipe apart, while the sealing baffle gradually returns to its original position; when it moves to a certain position, the bayonet compression spring releases its elastic potential energy until the limit bayonet returns to its original position, and the damping bolt is restrained; S9: The transfer operation ends.

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