Fuel filling device for inland ship

Abstract

The invention relates to the technical field of fuel filling devices, in particular to a fuel filling device for an inland river ship, which comprises an oil drum, a fuel bin and a roller bin are arranged in the oil drum, an oil outlet is formed in the surface of the oil drum, the oil outlet is communicated with the fuel bin, a drum cover is movably inserted into the oil outlet, and a first anti-opening device is arranged on the drum cover. A roller plate is movably inserted into the roller bin, and a balancing weight is fixed to one end of the roller plate; the oil drum has the beneficial effects that when the fuel bin formed in the oil drum is filled with fuel and the oil drum is temporarily stacked outdoors, the drum cover blocks the oil outlet, the safety lock is matched with the first anti-opening device for use, the drum cover can be prevented from retreating from the oil outlet, and therefore oil is prevented from being taken out of the fuel bin; meanwhile, a balancing weight is fixed to the bottom end of the roller plate, and the roller plate is installed on the oil drum through a second anti-opening device, so that the oil drum has large weight and is difficult to lift up, and lawbreakers are prevented from lifting away the oil drum.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fuel filling device, in particular to a fuel filling device for inland river ship. BACKGROUND

[0002] Ship refers to the general term of various types of ships that can sail, berth or work on water, is an important water transport vehicle and engineering equipment, is the key foundation in the fields of shipping industry, ocean development, national defense security, etc. Inland river ship refers to the ship that can sail on inland river, usually includes non-motorized ships such as barge, and also includes motorized ships using diesel or electricity and LNG energy, among which the ships using diesel as fuel are the most. There are a large number of speedboats using diesel as fuel in various scenic spots, and it is impossible to build a gas station in the scenic spot, so for the speedboat as an inland river ship, fuel is usually filled by using oil drums to take fuel from the gas station, then transported to the shore, and then the speedboat on the shore is filled with fuel. Because the scenic spot often uses a large number of oil drums to take fuel at one time, and a large number of oil drums are often stacked on the shore during fuel filling, and each oil drum is used, fuel has high economic value, which can easily cause the covet of illegal personnel, and thus the fuel is stolen.

[0003] In the prior art, a patent document with application number CN201310096825.3 discloses an anti-theft oil drum, which comprises a drum body, an oil outlet is arranged eccentrically on the top wall of the drum body, an oil drum cover is rotatably arranged on the oil outlet, a drum cover anti-opening device is arranged between the oil drum cover and the drum body, the drum cover anti-opening device comprises a first connecting piece fixedly arranged on the top of the oil drum cover and a second connecting piece inserted and matched with the first connecting piece along the axial or radial direction of the oil drum cover, a lock is arranged for preventing the separation of the first and second connecting pieces, the first and second connecting pieces are rotationally matched with the lock, and a cantilever is arranged on the second connecting piece and extends outward along the radial direction of the oil drum cover, and a locking arm is protruded downward on the cantilever and arranged outside the drum body and used for stopping the drum body in the circumferential direction. The present application provides an anti-theft oil drum which can prevent oil loss in the oil drum.

[0004] However, the anti-theft oil drum can only prevent illegal personnel from pouring oil out of the oil drum, and the oil drum is usually small in size and light in weight for convenient use, and can be lifted by a single person when full of oil, so that the oil drum cover anti-opening device is arranged on the oil outlet of the oil drum alone, and there is still a risk that the illegal person will take the oil drum away, hide it in a secret place, and then break open the oil drum and steal the fuel, and the fuel cannot be truly prevented from being stolen. SUMMARY

[0005] The present application aims to provide a fuel filling device for inland river ship to solve the problems in the background art.

[0006] In order to achieve the above object, the present application provides the following technical scheme: An inriver ship fuel filling device, comprising: a fuel tank, a fuel bin and a roller bin are arranged in the fuel tank, an oil outlet is arranged on the surface of the fuel tank, the oil outlet is communicated with the fuel bin, a barrel cover is movably inserted in the oil outlet, a first anti-opening device is arranged on the barrel cover, a roller plate is movably inserted in the roller bin, a counterweight is fixed to one end of the roller plate, a roller is arranged at the other end of the roller plate, and a second anti-opening device is arranged between the fuel tank and the roller plate.

[0007] Preferably, the first anti-opening device comprises: a barrel cover mounting plate, a lock plate, a lock plate insertion hole and a lock hole, one end of the barrel cover mounting plate is rotatably connected to the outer wall of the fuel tank, the barrel cover is fixed to the surface of the barrel cover mounting plate, the lock plate insertion hole is arranged on the surface of the barrel cover mounting plate, the lock plate is fixed to the outer wall of the fuel tank, the lock plate is movably inserted in the lock plate insertion hole, and the lock hole is arranged on the lock plate.

[0008] Preferably, the second anti-opening device comprises: a lock rod, a lock rod mounting hole is arranged on the fuel tank, the lock rod mounting hole is communicated with the roller bin, the lock rod mounting hole is in a circular hole structure, one end of the lock rod is rotatably inserted in the lock rod mounting hole, the lock rod is in a circular rod structure, a lock groove is arranged on the roller plate, the lock groove is in a circular groove structure, the groove diameter of the lock groove is the same as the hole diameter of the lock rod mounting hole, and one end of the lock rod extending out of the lock rod mounting hole is rotatably inserted in the lock groove.

[0009] Preferably, a limiting groove is arranged on the inner wall of the lock groove, the limiting groove is in a sector groove structure, the limiting groove is arranged at ninety degrees along the inner wall of the lock groove, a limiting block is fixed to the rod body of the lock rod, the limiting block is rotatably connected in the limiting groove, and the limiting block is in a rectangular block structure.

[0010] Preferably, a limiting block passing groove is arranged on the inner wall of the lock groove, one end of the limiting block passing groove is communicated with the limiting groove, the limiting block passing groove cooperates with the limiting block, and a limiting block receiving groove is arranged on the inner wall of the lock rod mounting hole, the limiting block receiving groove cooperates with the limiting block.

[0011] Preferably, the limiting groove and the limiting block passing groove are both arranged in two groups, the two groups of limiting grooves and the two groups of limiting block passing grooves are both distributed in a circular array about the center line of the lock groove, the two groups of limiting block passing grooves and the two groups of limiting grooves are both spaced by one hundred and eighty degrees, and the limiting block receiving groove is aligned with one of the two groups of limiting block passing grooves.

[0012] Preferably, one end of a spring is fixed in the lock groove, the other end of the spring abuts against the surface of the lock rod, and a key hole is arranged on the end of the lock rod away from the spring.

[0013] Preferably, the roller plate is in a rectangular plate structure, the roller bin is in a rectangular groove structure, the roller bin cooperates with the roller plate, four groups of supporting legs are fixed to one end of the roller plate, and the four groups of supporting legs are arranged at the four corners of the roller plate.

[0014] Preferably, a roller mounting base is fixed to the end of the roller plate away from the support foot, and a roller shaft is rotatably connected to the roller mounting base. The roller shaft has a circular rod structure, and the roller is fixed to both ends of the roller shaft.

[0015] Preferably, the top of the oil drum is fixed with a handle, which has a "U"-shaped plate structure.

[0016] Compared with the prior art, the beneficial effects of the present invention are: The inland waterway vessel fuel refueling device proposed in this invention, when the fuel tank inside the oil drum is full of fuel and temporarily stored outdoors, has the drum lid sealed in the oil outlet. The safety lock, in conjunction with the first anti-opening device, prevents the lid from coming off the oil outlet, thus preventing fuel from being taken out of the fuel tank. Simultaneously, a counterweight is fixed to the bottom of the roller plate, which is mounted on the oil drum via a second anti-opening device, giving the drum significant weight and making it difficult to lift, thus preventing unauthorized removal. When workers need to move the oil drum, they open the second anti-opening device with a key, remove the roller plate from the roller compartment, rotate it 180 degrees, and then reinstall it. The drum can then be easily moved by the rolling of the rollers. When it is necessary to lift the oil drum for refueling the inland waterway vessel, the second anti-opening device can be opened again, the roller plate removed from the roller compartment, and the drum can be lifted using the handle and refueled. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention; Figure 3 A schematic diagram of the cross-sectional structure of the roller plate after it has been rotated 180°. Figure 4 The diagram shows a cross-sectional structure of a lock groove, in which the lock rod is omitted. Figure 5 for Figure 4 Enlarged schematic diagram of the structure at point A in the middle; Figure 6 for Figure 4 Enlarged schematic diagram of the structure at point B.

[0018] In the diagram: 1. Oil drum; 2. Fuel compartment; 3. Roller compartment; 4. Oil outlet; 5. Drum lid mounting plate; 6. Drum lid; 7. Lock plate insertion hole; 8. Lock hole; 9. Roller plate; 10. Counterweight; 11. Roller mounting base; 12. Roller shaft; 13. Roller; 14. Lock rod mounting hole; 15. Lock groove; 16. Lock rod; 17. Keyhole; 18. Limiting groove; 19. Limiting block; 20. Limiting block storage groove; 21. Limiting block passage groove; 22. Handle; 23. Support leg; 24. Spring; 25. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions of the present application, and the advantages more clearly, completely and obviously, the embodiments of the present application are further described in detail below with reference to the drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present application, rather than all the embodiments, and are only used to explain the embodiments of the present application, and do not limit the embodiments of the present application, and all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0020] Embodiment one: please refer to Figures 1 to 6 The present application provides a technical solution: a fuel filling device for inland river ships, comprising: a oil drum 1, the oil drum 1 is provided with a fuel bin 2 and a roller bin 3, an oil outlet 4 is provided on the surface of the oil drum 1, the oil outlet 4 is through the fuel bin 2, a barrel cover 6 is movably inserted in the oil outlet 4, a first anti-opening device is provided on the barrel cover 6, a roller plate 10 is movably inserted in the roller bin 3, a counterweight 11 is fixed to one end of the roller plate 10, a roller 14 is provided at the other end of the roller plate 10, a second anti-opening device is provided between the oil drum 1 and the roller plate 10, a handle 23 is fixed to the top end of the oil drum 1, the handle 23 is in the form of a "U" shaped plate body structure.

[0021] When the fuel bin 2 in the oil drum 1 is full of fuel and is temporarily stacked outdoors, the barrel cover 6 is blocked in the oil outlet 4, and the safety lock is used in cooperation with the first anti-opening device to prevent the barrel cover 6 from being withdrawn from the oil outlet 4, thereby preventing the oil from being taken out of the fuel bin 2; at the same time, the counterweight 11 is fixed to the bottom end of the roller plate 10, and the roller plate 10 is installed on the oil drum 1 through the second anti-opening device, so that the oil drum 1 has a large weight and is difficult to be lifted, thereby preventing the oil drum 1 from being taken away by illegal persons; when the staff needs to move the oil drum 1, the second anti-opening device is opened by a key, the roller plate 10 is taken out of the roller bin 3 and turned one hundred and eighty degrees, and then the roller plate 10 is installed back into the roller bin 3, at this time, the oil drum 1 can be easily pushed to move by the rolling of the roller 14, when the oil drum 1 needs to be lifted for fuel filling of the inland river ship, the second anti-opening device can be opened again, the roller plate 10 is taken out of the roller bin 3, and then the oil drum 1 is lifted by the handle 23 and filled into the inland river ship.

[0022] In order to realize the connection between the roller 14 and the roller plate 10, the roller plate 10 is in a rectangular plate structure, the roller bin 3 is in a rectangular groove structure, the roller bin 3 is matched with the roller plate 10, one end of the roller plate 10 is fixed with four groups of supporting legs 24, the four groups of supporting legs 24 are respectively arranged at the four corners of the roller plate 10, the end of the roller plate 10 away from the supporting legs 24 is fixed with the roller mounting seat 12, the roller mounting seat 12 is rotatably connected with the roller shaft 13, the roller shaft 13 is in a circular rod structure, and the roller 14 is fixed at both ends of the roller shaft 13.

[0023] When the oil bucket 1 needs to be placed, the four groups of supporting legs 24 at one end of the roller plate 10 are placed on the ground to support the oil bucket 1; the roller 14 is fixed at both ends of the roller shaft 13, and the roller shaft 13 is rotatably connected with the roller mounting seat 12 fixed at the other end of the roller plate 10, so as to realize the connection between the roller 14 and the roller plate 10.

[0024] In order to realize the application of the first anti-opening device, the first anti-opening device comprises a bucket cover mounting plate 5, a lock plate 7, a lock plate insertion hole 8 and a lock hole 9, one end of the bucket cover mounting plate 5 is rotatably connected with the outer wall of the oil bucket 1, the bucket cover 6 is fixed on the surface of the bucket cover mounting plate 5, the lock plate insertion hole 8 is arranged on the surface of the bucket cover mounting plate 5, the lock plate 7 is fixed on the outer wall of the oil bucket 1, the lock plate 7 is movably inserted into the lock plate insertion hole 8, and the lock hole 9 is arranged on the lock plate 7.

[0025] When the bucket cover 6 is filled in the oil outlet 4, the lock plate 7 is inserted into the lock plate insertion hole 8, the lock ring of the safety lock is inserted into the lock hole 9 and locked, then the key of the safety lock is taken away, so as to realize the closing of the first anti-opening device; the safety lock is opened by the key, and the lock ring is taken out of the lock hole 9, so as to open the first anti-opening device, then the bucket cover mounting plate 5 is turned over, the bucket cover mounting plate 5 drives the bucket cover 6 to exit from the oil outlet 4, and then the fuel in the fuel bin 2 can be poured into or added into the fuel bin 2 through the oil outlet 4.

[0026] In order to realize the application of the second anti-opening device, the second anti-opening device comprises: a lock rod 17, a lock rod mounting hole 15 is opened on the oil drum 1, the lock rod mounting hole 15 is through with the roller bin 3, the lock rod mounting hole 15 is a round hole structure, one end of the lock rod 17 is rotatably inserted into the lock rod mounting hole 15, the lock rod 17 is a round rod structure, a lock slot 16 is opened on the roller plate 10, the lock slot 16 is a circular groove structure, and the groove diameter of the lock slot 16 is the same as the hole diameter of the lock rod mounting hole 15, one end of the lock rod 17 extending from the lock rod mounting hole 15 is rotatably inserted into the lock slot 16, a limiting slot 19 is opened on the inner wall of the lock slot 16, the limiting slot 19 is a sector groove structure, the limiting slot 19 is opened on the inner wall of the lock slot 16 by ninety degrees, a limiting block 20 is fixed on the rod body of the lock rod 17, the limiting block 20 is rotatably connected in the limiting slot 19, the limiting block 20 is a rectangular block structure, a limiting block passing groove 22 is opened on the inner wall of the lock slot 16, one end of the limiting block passing groove 22 is through with the limiting slot 19, the limiting block passing groove 22 is matched with the limiting block 20, a limiting block receiving groove 21 is opened on the inner wall of the lock rod mounting hole 15, the limiting block receiving groove 21 is matched with the limiting block 20, the limiting slot 19 and the limiting block passing groove 22 are both opened with two groups, the two groups of limiting slot 19 and the two groups of limiting block passing groove 22 are both circumferentially arrayed about the center line of the lock slot 16, the two groups of limiting block passing groove 22 and the two groups of limiting slot 19 are both spaced by one hundred and eighty degrees, the limiting block receiving groove 21 is aligned with one of the two groups of limiting block passing groove 22, one end of a spring 25 is fixed in the lock slot 16, the other end of the spring 25 abuts against the surface of the lock rod 17, and a key hole 18 is opened on the end of the lock rod 17 away from the spring 25.

[0027] When the one end of the lock rod 17 is inserted into the lock rod mounting hole 15, the other end of the lock rod 17 is inserted into the lock slot 16, and the limiting block 20 is rotationally connected in the limiting slot 19, the first anti-opening device is in the locked state, and the spring 25 is in the compressed state at this time. The spring 25 generates a pushing force on the lock rod 17, the pushing force of the lock rod 17 is transmitted to the limiting block 20, a large friction force is generated between the limiting block 20 and the inner wall of the limiting slot 19, and the rotation of the lock rod 17 caused by the friction of the lock rod 17 by the illegal person is prevented. The slot body shape of the key hole 18 adopts a special shape, so that the illegal person is difficult to obtain the tool that can be inserted into the key hole 18 from the daily necessities. Meanwhile, the key hole 18 is provided with a key with a shape matched with the key hole 18. The key is kept by the staff. When the staff needs to open the second anti-opening device, the key is inserted into the key hole 18, the key is screwed, the key drives the lock rod 17 to rotate, the lock rod 17 drives the limiting block 20 to rotate, and when the limiting block 20 is aligned with the limiting block through slot 22, the spring 25 pushes the lock rod 17 outward, so that the lock rod 17 is withdrawn from the lock rod 17. The limiting block 20 also enters the limiting block storage slot 21 along the limiting block through slot 22. After that, the second anti-opening device is in the opened state. After the roller plate 10 is turned over by 180° and then inserted into the roller bin 3, the limiting block storage slot 21 is aligned with the other limiting block through slot 22. The lock rod 17 is pushed to the depth of the lock rod mounting hole 15, so that one end of the lock rod 17 is pushed into the lock slot 16 again. The limiting block 20 also enters the other limiting slot 19 through the other limiting block through slot 22. Then, the key is rotated, the key drives the lock rod 17 to rotate, the limiting block 20 is deviated from the limiting block through slot 22, and the lock rod 17 is limited in the lock slot 16 again, so that the locking of the second anti-opening device is realized.

[0028] In actual use, when the fuel tank 2 in the oil drum 1 is full of fuel and temporarily placed outdoors, the cover 6 is blocked in the oil outlet 4, and the safety lock is used in cooperation with the first anti-opening device to prevent the cover 6 from being withdrawn from the oil outlet 4, thereby preventing the oil from being taken out of the fuel tank 2. At the same time, the counterweight 11 is fixed to the bottom end of the roller plate 10, and the roller plate 10 is installed on the oil drum 1 through the second anti-opening device, so that the oil drum 1 has a large weight and is difficult to be lifted, thereby preventing the oil drum 1 from being taken away by illegal persons. When the staff needs to move the oil drum 1, the second anti-opening device is opened by a key, the roller plate 10 is taken out of the roller tank 3 and turned by one hundred and eighty degrees, and then the roller plate 10 is installed back into the roller tank 3. At this time, the oil drum 1 can be easily pushed to move by the rolling of the rollers 14. When the oil drum 1 needs to be lifted for fuel filling of an inland ship, the second anti-opening device is opened again, the roller plate 10 is taken out of the roller tank 3, and then the oil drum 1 is lifted by the handle 23 and filled into the inland ship. When the oil drum 1 needs to be stationary, the four groups of feet 24 at one end of the roller plate 10 are placed on the ground to support the oil drum 1. The rollers 14 are fixed to both ends of the roller shaft 13, and the roller shaft 13 is rotationally connected to the roller mounting seat 12 fixed to the other end of the roller plate 10, thereby realizing the connection between the rollers 14 and the roller plate 10. When the cover 6 is blocked in the oil outlet 4, the lock plate 7 is inserted into the lock plate insertion hole 8, the lock ring of the safety lock is inserted into the lock hole 9 and locked, and then the key of the safety lock is taken away, thereby realizing the closing of the first anti-opening device. The first anti-opening device is opened by opening the safety lock with a key and taking out the lock ring from the lock hole 9, and then the cover mounting plate 5 is turned over, the cover 6 is withdrawn from the oil outlet 4 by the cover mounting plate 5, and the fuel in the fuel tank 2 can be poured into or added to the fuel tank 2 through the oil outlet 4. When the one end of the lock rod 17 is inserted into the lock rod mounting hole 15, the other end of the lock rod 17 is inserted into the lock groove 16, and the limiting block 20 is rotationally connected in the limiting groove 19, the first anti-opening device is in a locked state, the spring 25 is in a compressed state, the spring 25 generates a pushing force on the lock rod 17, the pushing force of the lock rod 17 is transmitted to the limiting block 20, a large friction force is generated between the limiting block 20 and the inner wall of the limiting groove 19, and the rotation of the lock rod 17 caused by the friction of the lock rod 17 by illegal persons is prevented.The slot shape of the keyhole 18 is specially shaped, so that it is difficult for the illegal to obtain the tool which can be inserted into the keyhole 18 from the daily necessities, and the keyhole 18 is provided with a key which is matched with the keyhole 18 in shape, and the key is kept by the staff, when the staff needs to open the second anti-opening device, the key is inserted into the keyhole 18, and the key is twisted, the key drives the lock rod 17 to rotate, the lock rod 17 drives the limiting block 20 to rotate, when the limiting block 20 is aligned with the limiting block through the slot 22, the spring 25 pushes the lock rod 17 outward, so that the lock rod 17 is withdrawn from the lock rod 17, and the limiting block 20 also enters the limiting block storage slot 21 along the limiting block through the slot 22, and then the second anti-opening device is in the opened state; after the roller plate 10 is turned over 180° and then inserted into the roller warehouse 3, the limiting block storage slot 21 is aligned with the other set of limiting block through the slot 22, the lock rod 17 is pushed to the depth of the lock rod mounting hole 15, so that one end of the lock rod 17 is pushed into the lock slot 16 again, and the limiting block 20 also enters the other set of limiting slot 19 through the other set of limiting block through the slot 22, then the key is rotated, the key drives the lock rod 17 to rotate, so that the limiting block 20 is deviated from the limiting block through the slot 22, that is, the lock rod 17 can be limited in the lock slot 16 again, so as to realize the locking of the second anti-opening device.

[0029] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fuel refueling device for inland waterway vessels, comprising: An oil drum (1) is characterized in that: a fuel chamber (2) and a roller chamber (3) are provided in the oil drum (1), an oil outlet (4) is provided on the surface of the oil drum (1), the oil outlet (4) is connected to the fuel chamber (2), a barrel cover (6) is movably inserted in the oil outlet (4), a first anti-opening device is provided on the barrel cover (6), a roller plate (10) is movably inserted in the roller chamber (3), a counterweight (11) is fixed at one end of the roller plate (10), a roller (14) is provided at the other end of the roller plate (10), and a second anti-opening device is provided between the oil drum (1) and the roller plate (10).

2. The inland waterway vessel fuel refueling device according to claim 1, characterized in that: The first anti-opening device includes: a lid mounting plate (5), a locking plate (7), a locking plate insertion hole (8), and a locking hole (9). One end of the lid mounting plate (5) is rotatably connected to the outer wall of the oil drum (1). The lid (6) is fixed on the surface of the lid mounting plate (5). The locking plate insertion hole (8) is opened on the surface of the lid mounting plate (5). The locking plate (7) is fixed on the outer wall of the oil drum (1). The locking plate (7) is movably inserted into the locking plate insertion hole (8). The locking plate (7) has a locking hole (9).

3. The inland waterway vessel fuel refueling device according to claim 1, characterized in that: The second anti-opening device includes: a locking rod (17), a locking rod mounting hole (15) is provided on the oil drum (1), the locking rod mounting hole (15) is connected to the roller chamber (3), the locking rod mounting hole (15) is a round hole structure, one end of the locking rod (17) is rotatably inserted into the locking rod mounting hole (15), the locking rod (17) is a round rod structure, a locking groove (16) is provided on the roller plate (10), the locking groove (16) is a circular groove structure, and the groove diameter of the locking groove (16) is the same as the hole diameter of the locking rod mounting hole (15), and one end of the locking rod (17) extending from the locking rod mounting hole (15) is rotatably inserted into the locking groove (16).

4. The inland waterway vessel fuel refueling device according to claim 3, characterized in that: A limiting groove (19) is provided on the inner wall of the locking groove (16). The limiting groove (19) has a fan-shaped groove structure. The limiting groove (19) is opened at a 90-degree angle along the inner wall of the locking groove (16). A limiting block (20) is fixed on the rod of the locking rod (17). The limiting block (20) is rotatably connected in the limiting groove (19). The limiting block (20) has a rectangular block structure.

5. The inland waterway vessel fuel refueling device according to claim 4, characterized in that: A limiting block passage groove (22) is provided on the inner wall of the lock groove (16). One end of the limiting block passage groove (22) is connected to the limiting groove (19). The limiting block passage groove (22) cooperates with the limiting block (20). A limiting block storage groove (21) is provided on the inner wall of the lock rod mounting hole (15). The limiting block storage groove (21) cooperates with the limiting block (20).

6. The inland waterway vessel fuel refueling device according to claim 5, characterized in that: The limiting groove (19) and the limiting block through groove (22) are each provided in two sets. The two sets of limiting grooves (19) and the two sets of limiting block through grooves (22) are arranged in a circular array about the center line of the locking groove (16). The two sets of limiting block through grooves (22) and the two sets of limiting grooves (19) are spaced 180 degrees apart. The limiting block receiving groove (21) is aligned with one of the sets of limiting block through grooves (22).

7. The inland waterway vessel fuel refueling device according to claim 6, characterized in that: One end of a spring (25) is fixed in the lock groove (16), and the other end of the spring (25) abuts against the surface of the lock rod (17). A keyhole (18) is provided at the end of the lock rod (17) away from the spring (25).

8. The inland waterway vessel fuel refueling device according to claim 1, characterized in that: The roller plate (10) has a rectangular plate structure, and the roller compartment (3) has a rectangular groove structure. The roller compartment (3) cooperates with the roller plate (10). One end of the roller plate (10) is fixed with four sets of support legs (24), and the four sets of support legs (24) are respectively set at the four corners of the roller plate (10).

9. A fuel refueling device for inland waterway vessels according to claim 8, characterized in that: The roller plate (10) is fixed with a roller mounting seat (12) at one end away from the support foot (24). A roller shaft (13) is rotatably connected to the roller mounting seat (12). The roller shaft (13) has a circular rod structure, and the roller (14) is fixed at both ends of the roller shaft (13).

10. A fuel refueling device for inland waterway vessels according to claim 1, characterized in that: The top of the oil drum (1) is fixed with a handle (23), which has a "U" shaped plate structure.

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