Protective structure for oil filling port of rotational molding oil tank

Abstract

The utility model discloses a rotational molding oil tank oil filling port protection structure which comprises an oil tank shell, a conical cylinder is connected to the oil tank shell through a limiting assembly, a screw cap is connected to the top end of the conical cylinder in a screwed mode, a connecting ring is rotatably connected to the outer side wall of the screw cap in a limited mode, and a connecting plate is fixedly connected to the side wall of the connecting ring. A mounting seat is fixedly arranged on the surface of the oil tank shell, a connecting hole is formed in the surface of the mounting seat, an inserting rod is rotatably connected in the connecting hole in a limiting mode, the side wall of the inserting rod is slidably connected with one end of a connecting plate in a limiting mode, a connecting rod is movably arranged in the mounting seat, and one end of the connecting rod is fixedly connected with an inserting block. The side wall of the bottom end of the inserting rod is provided with an inserting hole connected with the inserting block in an inserted mode, the outer side wall of the connecting rod is provided with a spring, and the situation that the screw cap is contaminated by dust or is not easy to find due to the fact that the screw cap is placed at will after being opened is avoided through the screw cap connected in a limited mode.

Description

Technical Field

[0001] The utility model relates to the technical field of roto-molded oil tanks, in particular to a protective structure for a refueling port of a roto-molded oil tank. Background Art

[0002] With the optimization of plastic production technology and material properties, roto-molded fuel tanks have obvious advantages in shape, corrosion resistance and volume, and are more widely used. In order to avoid the problem of high pressure inside the fuel tank, a fuel tank cap with breathing function is usually installed. However, the existing device has certain problems when used and still needs to be continuously improved;

[0003] For example, a roto-molded fuel tank refueling port protection structure disclosed in the utility model with authorization announcement number CN220009457U includes a fuel tank, a refueling port is opened on the top of the fuel tank, a conical cylinder is arranged inside the refueling port, an outer ring plate is arranged on the circumferential outer wall of the conical cylinder, a bearing is arranged on the upper surface of the fuel tank, an inner ring plate is arranged on the circumferential inner wall of the inner ring of the bearing, a linkage bent rod is rotatably connected to the upper surface of the inner ring through a first rotating shaft, a clamping bent rod is rotatably connected to the linkage bent rod through a second rotating shaft on the upper surface of the fuel tank, and the clamping bent rod is rotatably connected to the linkage bent rod through a third rotating shaft. By arranging a plurality of linkage bent rods and clamping bent rods, the conical cylinder can be firmly installed inside the refueling port. When the conical cylinder and the screw cap are severely worn so that the two cannot be stably threaded, a new conical cylinder and screw cap can be replaced to ensure the sealing effect of the refueling port and long-term normal use.

[0004] However, the screw cap is separated from the fuel tank. When refueling, after the screw cap is opened, on the one hand, it will be placed randomly, making its surface easy to be contaminated with dust. On the other hand, the screw cap is placed randomly, making it difficult for personnel to find the fuel tank cap after refueling, which is inconvenient. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a rotationally molded fuel tank refueling port protective structure, which can solve the inconvenience technical problem that the screw cap and the fuel tank are separated. When refueling, after the screw cap is opened, on the one hand, it will be placed randomly, making its surface easily contaminated with dust. On the other hand, the screw cap is placed randomly, making it difficult for personnel to find the fuel tank cap after refueling is completed, which is quite inconvenient.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a rotationally molded fuel tank refueling port protective structure, comprising a fuel tank shell, a conical cylinder is connected to the fuel tank shell through a limiting assembly, a screw cap is screwed on the top end of the conical cylinder, a connecting ring is limited and rotatably connected to the outer wall of the screw cap, a connecting plate is fixedly connected to the side wall of the connecting ring, a mounting seat is fixedly provided on the surface of the fuel tank shell, a connecting hole is provided on the surface of the mounting seat, a plug rod is limited and rotatably connected in the connecting hole, the side wall of the plug rod is limited and slidably connected to one end of the connecting plate, a connecting rod is movably provided in the mounting seat, one end of the connecting rod is fixedly connected to an insert block, a plug hole is provided on the side wall of the bottom end of the plug rod, and a spring is provided on the outer wall of the connecting rod.

[0007] As a preferred technical solution of the utility model, a toggle block for pulling the connecting rod is connected to one end of the connecting rod and located outside the mounting seat.

[0008] As a preferred technical solution of the utility model, a refueling port connected to the conical cylinder is provided on the upper surface of the oil tank shell.

[0009] As a preferred technical solution of the utility model, the limit assembly includes an outer ring plate, an extension plate, a vertical plate, and a screw rod. The outer side wall of the conical cylinder is fixedly provided with an outer ring plate, and two extension plates are symmetrically fixedly provided on the outer side wall of the outer ring plate. Two vertical plates are fixedly provided on the upper surface of the oil tank shell and on both sides of the conical cylinder. A screw rod is threaded through the surface of the two vertical plates, and one end of the two screw rods is movably passed through the surfaces of the two extension plates.

[0010] As a preferred technical solution of the utility model, a rubber pad is provided on the bottom wall of the outer ring plate.

[0011] As a preferred technical solution of the utility model, the bottom wall of the oil tank shell is provided with an oil outlet pipe for discharging the oil in the oil tank shell.

[0012] Compared with the prior art, the utility model can achieve the following beneficial effects:

[0013] 1. The limited rotation connection of the plug rod is realized by the matching setting of the mounting seat and the connecting hole. The limited rotation connection of the plug rod and the connecting plate is realized by the matching setting of the connecting ring and the screw cap. The screw cap connected by the limited connection can prevent the screw cap from being randomly placed after opening, resulting in dust or difficulty in finding.

[0014] 2. At the same time, through the coordinated setting of the connecting rod and the spring, the plug-in connection between the plug block and the plug hole opened on the side wall of the plug rod is realized, thereby limiting the plug rod and increasing the stability of the plug rod. The stably arranged plug rod is connected to the rotary cover through the connecting plate and the connecting ring, thereby further increasing the stability of the rotary cover and improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model from the first viewing angle;

[0016] Figure 2 This is a schematic diagram of a partially disassembled three-dimensional structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the cutaway three-dimensional structure of the mounting seat of the utility model;

[0018] Figure 4 This is a schematic diagram of the three-dimensional structure of the utility model from a second viewing angle;

[0019] Among them: 1. Oil tank shell; 2. Conical cylinder; 3. Outer ring plate; 4. Rubber pad; 5. Extension plate; 6. Vertical plate; 7. Screw rod; 8. Knob; 9. Screw cover; 10. Connecting ring; 11. Mounting seat; 12. Connecting plate; 13. Insert rod; 14. Socket; 15. Insert block; 16. Connecting rod; 17. Spring; 18. Connecting hole; 19. Oil outlet pipe. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0021] Example

[0022] Please refer to Figure 1-4As shown, the utility model provides a roto-molded fuel tank filling port protection structure, a conical cylinder 2 is connected and arranged on the fuel tank shell 1 through a limiting assembly, then a rotary cover 9 is screwed and connected to the top of the conical cylinder 2, then a connecting ring 10 is rotated and connected to the outer wall of the rotary cover 9, and a connecting plate 12 is fixedly connected to the side wall of the connecting ring 10, and a mounting seat 11 is fixedly arranged on the surface of the fuel tank shell 1, and a connecting hole 18 is opened on the surface of the mounting seat 11, then a plug rod 13 is rotated and connected in the connecting hole 18, then the side wall of the plug rod 13 is slidingly connected to one end of the connecting plate 12, and a connecting rod 16 is movably arranged in the mounting seat 11, and an insert block 15 is fixedly connected to one end of the connecting rod 16, then a plug hole 14 plugged and connected to the insert block 15 is opened on the side wall of the bottom end of the plug rod 13, and finally a spring 17 is arranged on the outer wall of the connecting rod 16;

[0023] When adjusting the use, first rotate the adjusting screw cap 9, then pull the connecting rod 16, so that the plug block 15 at one end of the connecting rod 16 is released from the plug connection with the plug hole 14 opened on the side wall of the plug rod 13, and then rotate the adjusting plug rod 13, and the rotating and adjusting plug rod 13 drives the screw cap 9 to rotate and adjust through the connecting plate 12 and the connecting ring 10, so that the screw cap 9 is removed from the top of the conical cylinder 2, and then refueling is carried out into the fuel tank housing 1 through the conical cylinder 2. When it is necessary to screw and fix the screw cap 9 to the top of the conical cylinder 2 again, first rotate the plug rod 13, so that the screw cap 9 is moved to the top of the conical cylinder 2 again, and the plug hole 14 opened on the side wall of the plug rod 13 is reset while the plug rod 13 is rotated, and the plug block 15 is again inserted into the plug hole 14 under the elastic force of the spring 17, and then the screw cap 9 is rotated to screw and fix the screw cap 9 to the top of the conical cylinder 2;

[0024] As a further implementation of this embodiment, Figure 1-4 As shown, the limiting assembly includes an outer ring plate 3, an extension plate 5, a vertical plate 6, and a screw rod 7. First, the outer ring plate 3 is fixedly arranged on the outer side wall of the conical cylinder 2, and then two extension plates 5 are symmetrically fixedly arranged on the outer side wall of the outer ring plate 3. At the same time, two vertical plates 6 are fixedly arranged on the upper surface of the oil tank shell 1 and on both sides of the conical cylinder 2. Then, a screw rod 7 is threadedly penetrated on the surface of the two vertical plates 6, and one end of the two screw rods 7 is movably penetrated through the surface of the two extension plates 5, and a rubber pad 4 is arranged on the bottom wall of the outer ring plate 3. The arrangement of the rubber pad 4 can increase the friction between the outer ring plate 3 and the oil tank shell 1, thereby improving the stability of the connection between the conical cylinder 2 and the oil tank shell 1. Finally, an oil outlet pipe 19 is arranged on the bottom wall of the oil tank shell 1, and the oil in the oil tank shell 1 can be discharged through the arrangement of the oil outlet pipe 19;

[0025] When the conical cylinder 2 is installed in a limited position, the conical cylinder 2 is first inserted into the refueling port opened on the surface of the oil tank shell 1, and the rubber pad 4 provided on the bottom wall of the outer ring plate 3 is tightly pressed against the surface of the oil tank shell 1. At the same time, two extension plates 5 are provided on one side of the two screw rods 7. Then, the screw rod 7 is adjusted and rotated by the knob 8, so that the screw rod 7 is threaded through the two screw rods 7 and then movably passes through the surface of the extension plate 5, thereby limiting the extension plate 5, and then completing the limited installation of the conical cylinder 2;

[0026] Specific working principle:

[0027] When the device is installed and used, first insert the conical cylinder 2 into the refueling port opened on the surface of the oil tank shell 1, and make the rubber pad 4 set on the bottom wall of the outer ring plate 3 tightly against the surface of the oil tank shell 1, and at the same time, two extension plates 5 are set on one side of the two screw rods 7, and then the screw rod 7 is adjusted and rotated by the knob 8, so that the screw rod 7 is threaded through the two screw rods 7 and then movably passes through the surface of the extension plate 5, thereby limiting the extension plate 5, and then completing the limited installation of the conical cylinder 2. When it is necessary to refuel the oil tank shell 1, first turn the adjusting cover 9, and then pull the connecting rod 16, so that the plug block 15 at one end of the connecting rod 16 is released from the plug connection with the plug hole 14 opened on the side wall of the plug rod 13, and then turn the adjusting plug rod 13. The dynamically adjustable plug rod 13 drives the rotary cover 9 to rotate and adjust through the connecting plate 12 and the connecting ring 10, so that the rotary cover 9 is removed from the top of the conical cylinder 2, and then refueling is carried out into the fuel tank housing 1 through the conical cylinder 2. When it is necessary to screw and fix the rotary cover 9 to the top of the conical cylinder 2 again, the plug rod 13 is rotated first, so that the rotary cover 9 is moved to the top of the conical cylinder 2 again. At the same time, the insertion hole 14 opened on the side wall of the plug rod 13 is reset, and the plug block 15 is inserted into the insertion hole 14 again under the elastic force of the spring 17. Then the rotary cover 9 is rotated to screw and fix the rotary cover 9 to the top of the conical cylinder 2. By limiting the connection of the rotary cover 9, it is prevented from being placed randomly after opening, resulting in dust contamination or difficulty in finding.

[0028] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A rotationally molded fuel tank filling port protection structure, comprising a fuel tank shell (1), characterized in that: The oil tank housing (1) is provided with a conical cylinder (2) connected via a limiting assembly, the top end of the conical cylinder (2) is screwed with a rotary cover (9), the outer wall of the rotary cover (9) is connected with a connecting ring (10) in a limited rotational manner, the side wall of the connecting ring (10) is fixedly connected with a connecting plate (12), a mounting seat (11) is fixedly provided on the surface of the oil tank housing (1), a connecting hole (18) is provided on the surface of the mounting seat (11), a plug rod (13) is connected in a limited rotational manner in the connecting hole (18), the side wall of the plug rod (13) is connected to one end of the connecting plate (12) in a limited sliding manner, a connecting rod (16) is movably provided in the mounting seat (11), one end of the connecting rod (16) is fixedly connected with an insert block (15), a plug hole (14) plug-connected with the insert block (15) is provided on the side wall of the bottom end of the plug rod (13), and a spring (17) is provided on the outer wall of the connecting rod (16).

2. A roto-molded fuel tank refueling port protective structure according to claim 1, characterized in that: One end of the connecting rod (16) and the end located outside the mounting seat (11) is connected to a toggle block for pulling the connecting rod (16).

3. A roto-molded fuel tank refueling port protection structure according to claim 1, characterized in that: The upper surface of the oil tank housing (1) is provided with a refueling port connected to the conical cylinder (2).

4. A roto-molded fuel tank refueling port protection structure according to claim 1, characterized in that: The limiting assembly comprises an outer ring plate (3), an extension plate (5), a vertical plate (6), and a screw rod (7); the outer side wall of the conical cylinder (2) is fixedly provided with the outer ring plate (3); the outer side wall of the outer ring plate (3) is symmetrically fixedly provided with two extension plates (5); the upper surface of the oil tank housing (1) and located on both sides of the conical cylinder (2) are fixedly provided with two vertical plates (6); a screw rod (7) is threadedly penetrated through the surface of each of the two vertical plates (6), and one end of each of the two screw rods (7) is movably penetrated through the surfaces of the two extension plates (5).

5. A roto-molded fuel tank refueling port protective structure according to claim 4, characterized in that: The bottom wall of the outer ring plate (3) is provided with a rubber pad (4).

6. A roto-molded fuel tank refueling port protection structure according to claim 1, characterized in that: The bottom wall of the oil tank housing (1) is provided with an oil outlet pipe (19) for discharging the oil in the oil tank housing (1).

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