A vehicle-mounted CNG cylinder protection mechanism

Abstract

The present invention provides a vehicle-mounted CNG bottle protection mechanism, which includes a CNG gas cylinder, a buffer assembly, a limit assembly, and an anti-impact assembly. The outer wall of the CNG gas cylinder is provided with a first protective shell and a second protective shell. A buffer assembly is provided in the first protective shell. The first protective shell is connected to the limit assembly, and an anti-impact assembly is connected between the first protective shell and the second protective shell. The buffer assembly includes a sliding rod, which is fixedly connected to the protective shell. Two buffer sliders are sleeved on the sliding rod. A return spring is fixedly connected between the two buffer sliders. The buffer slider is hinged with a buffer rod, and the two buffer rods are hinged on a fixed ring. The buffer slider in the first protective shell is connected to the limit assembly. The limit assembly includes a hinged rod, which is connected with a first limit rod, and the first limit rod is connected with a first limit plate. The present invention provides a vehicle-mounted CNG bottle protection mechanism that reduces fatigue damage, enhances the buffering force, and enhances the fixing stability.

Description

Technical Field

[0001] The present invention belongs to the technical field of CNG cylinders, and particularly relates to a protection mechanism for on-vehicle CNG cylinders. Background Art

[0002] A CNG vehicle refers to a vehicle in which natural gas mainly composed of methane is stored in a cylinder similar to a fuel tank in the vehicle under a pressure of about 25 Mpa and used as vehicle fuel. The main process is that at a CNG gas station, low-pressure natural gas of 0.3 - 0.8 Mpa is boosted to 25 Mpa by a natural gas compressor, controlled by a sequence control panel, stored in a gas storage cylinder group in high, medium, and low pressure sequences, and then filled into the vehicle cylinder by a CNG filling machine.

[0003] Existing on-vehicle CNG cylinders are often rigidly protected when installed on a vehicle. Under the operations of vehicle acceleration, braking, and turning, the cylinders will move forward and backward, left and right under the action of inertia, inevitably resulting in knocking, collision, and fatigue damage. And in the special case of a traffic accident, a violent impact is very likely to cause serious damage to the cylinders, posing a safety hazard. Summary of the Invention

[0004] The purpose of the present invention is to provide a protection mechanism for on-vehicle CNG cylinders, which can reduce the fatigue damage of CNG cylinders through a flexible buffer component, enhance the buffer force, enhance the left and right fixation of CNG cylinders through a limit component, enhance the fixation stability of CNG cylinders, and effectively protect the relatively fragile middle part of CNG cylinders through an anti-impact component.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A protection mechanism for on-vehicle CNG cylinders, including a CNG cylinder, a buffer component, a limit component, and an anti-impact component. A first protective shell and a second protective shell are provided on the outer wall of the CNG cylinder. The buffer component is provided in the first protective shell. The limit component is connected in the first protective shell. The anti-impact component is connected between the first protective shell and the second protective shell. The buffer component includes slide bars on both sides of the CNG cylinder. The slide bars are fixedly connected to the protective shell. Two buffer sliders are sleeved on the slide bars. A return spring is fixedly connected between the two buffer sliders. Buffer rods are hinged on the buffer sliders. The other ends of the two buffer rods are hinged to the same fixed ring. The buffer slider near the top of the CNG cylinder in the first protective shell is connected to the limit component. The limit component includes a hinged rod with one end connected to the buffer slider. The other end of the hinged rod is connected to a first limit rod. The first limit rod is connected to a first limit plate. A second limit rod is fixedly connected to the side of the buffer slider near the top of the CNG cylinder. The second limit rod passes through the top of the protective shell and is connected to a second limit plate.

[0006] As a further solution of the present invention: The anti-impact component includes a fixing plate located between the first protective shell and the second protective shell. The fixing plate is fixedly connected with an inflatable sleeve. Two inflatable pistons are slidably arranged between the inflatable sleeves. The inflatable pistons are fixedly connected with push rods. The push rods are fixedly connected with buffer sliders. An inflatable airbag is arranged on the outer wall of the CNG gas cylinder. The inflatable sleeve is connected to the inflatable airbag through an air injection port;

[0007] As a further solution of the present invention: The inner wall of the fixing ring is provided with a high-temperature resistant silica gel skin;

[0008] As a further solution of the present invention: The first limiting rod is hingedly connected to the first limiting plate, and the second limiting plate is hingedly connected to the second limiting plate;

[0009] As a further solution of the present invention: The first limiting plate is sleeved at the position of the arc head of the CNG gas cylinder, and a first anti-slip pad is provided at the sleeved position;

[0010] As a further solution of the present invention: A closed anti-impact shell is arranged outside the inflatable airbag;

[0011] As a further solution of the present invention: The second protective shell is provided with a second anti-slip pad corresponding to the bottom end of the CNG gas cylinder.

[0012] Compared with the prior art, the beneficial effects of the present invention are: By providing a buffer component on the protection mechanism of the present invention, when the CNG gas cylinder moves forward and backward due to inertia, the fixing ring on the outer wall of the gas cylinder is driven to move in the same direction. The fixing ring drives the angle of the buffer rod to change. Cooperating with the sliding column and the return spring, the buffer rod drives the connected buffer slider to move relatively or in opposite directions. The angle of the buffer rod on one side of the moving direction of the CNG gas cylinder expands, the buffer slider moves relatively, and the return spring is stretched. Under the elastic return action of the return spring, the inertia force of the CNG gas cylinder is offset. The buffer rod on the other side of the CNG gas cylinder has its angle reduced under the pulling of the gas cylinder, the buffer slider moves in opposite directions, and the return spring is compressed. Under the elastic return action of the return spring, a pulling force is generated on the gas cylinder. And a high-temperature resistant silica gel skin is provided on the inner wall of the fixing ring, and the fatigue damage of the CNG gas cylinder is reduced through the flexible buffer component, enhancing the buffer force;

[0013] In the present invention, a limiting component is provided on the protection mechanism. When the shock-absorbing slider moves on the sliding column, the articulated rod on the shock-absorbing slider is driven to move. The articulated rod drives the first limiting rod to move through being hinged to the first protective shell. The buffer sliders on both sides of the CNG gas cylinder move in opposite directions. On the side where the buffer sliders move relatively, the articulated rod drives the first limiting rod to move leftward, and the first limiting rod drives the limiting plate to move leftward. At the same time, the buffer slider drives the second limiting rod to move rightward, and the second limiting rod drives the second limiting plate to move rightward. On the side where the buffer sliders move towards each other, the articulated rod drives the first limiting rod to move rightward, and the first limiting rod drives the limiting plate to move rightward. At the same time, the buffer slider drives the second limiting rod to move leftward, and the second limiting rod drives the second limiting plate to move leftward. The CNG gas cylinder is fixed and limited by the opposite and staggered inclination of the first limiting plate and the second limiting plate. And the first limiting plate is sleeved at the position of the arc head of the CNG gas cylinder, and a first anti-slip pad is provided at the sleeved position. The second protective shell is provided with a second anti-slip pad corresponding to the bottom end of the CNG gas cylinder, enhancing the left-right fixation of the CNG gas cylinder and enhancing the fixation stability of the CNG gas cylinder;

[0014] In the present invention, an anti-impact component is provided on the protection mechanism. When the CNG gas cylinder is subjected to a large impact and generates a large displacement

[0015] when, through the sliding of the buffer slider, the push rod is driven to move. When the push rod moves into the inflation sleeve, the inflation piston is driven to move, and then gas is injected into the inflation airbag through the inflation port, wrapping around the periphery of the middle part of the CNG gas cylinder, effectively protecting the relatively fragile middle part of the CNG gas cylinder. Description of the Drawings

[0016] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings: Figure 1 is a schematic structural diagram of a vehicle-mounted CNG cylinder protection mechanism of the present invention.

[0017] Figure 2 is a schematic structural diagram of a buffer component of a vehicle-mounted CNG cylinder protection mechanism of the present invention.

[0018] Figure 3 is a schematic structural diagram of an anti-impact component of a vehicle-mounted CNG cylinder protection mechanism of the present invention.

[0019] Figure 4 is a schematic structural diagram of a limiting plate of a vehicle-mounted CNG cylinder protection mechanism of the present invention.

[0020] In the figure: 1. CNG gas cylinder; 2. First protective shell; 3. Second protective shell; 4. Slide bar; 5. Buffer slider; 6. Return spring; 7. Buffer rod; 8. Fixed ring; 9. Hinge rod; 10. First limiting rod; 11. First limiting plate; 12. Second limiting rod; 13. Second limiting plate; 14. Fixed plate; 15. Inflation sleeve; 16. Inflation piston; 17. Push rod; 18. Inflatable airbag; 19. Inflation port; 20. First anti-slip pad; 21. Impact-proof shell; 22. Second anti-slip pad. Embodiment

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1-4 , the present invention provides a technical solution: a vehicle-mounted CNG bottle protection mechanism, including a CNG gas cylinder 1, a buffer assembly, a limiting assembly, and an impact-proof assembly. The outer wall of the CNG gas cylinder 1 is provided with a first protective shell 2 and a second protective shell 3. The first protective shell 2 is internally provided with a buffer assembly, the first protective shell 2 is connected with a limiting assembly, and an impact-proof assembly is connected between the first protective shell 2 and the second protective shell 3;

[0023] The buffer assembly includes slide bars 4 located on both sides of the CNG gas cylinder 1. The slide bars 4 are fixedly connected to the protective shell. Two buffer sliders 5 are sleeved on the slide bars 4. A return spring 6 is fixedly connected between the two buffer sliders 5. Buffer rods 7 are hinged on the buffer sliders 5. The other ends of the two buffer rods 7 are hinged to the same fixed ring 8. The buffer slider 5 near the top end of the CNG gas cylinder 1 in the first protective shell 2 is connected with a limiting assembly. The limiting assembly includes a hinge rod 9 with one end connected to the buffer slider 5. The other end of the hinge rod 9 is connected with a first limiting rod 10. The first limiting rod 10 is connected with a first limiting plate 11. A second limiting rod 12 is fixedly connected to the side of the buffer slider 5 near the top end of the CNG gas cylinder 1. The second limiting rod 12 passes through the top end of the protective shell and is connected with a second limiting plate 13;

[0024] As a further solution of the present invention: The anti-impact component includes a fixing plate 14 located between the first protective shell 2 and the second protective shell. The fixing plate 14 is fixedly connected with an inflatable sleeve 15. Two inflatable pistons 16 are slidably arranged between the inflatable sleeves 15. The inflatable pistons 16 are fixedly connected with push rods 17. The push rods 17 are fixedly connected with the buffer sliders 5. An inflatable airbag 18 is arranged on the outer wall of the CNG gas cylinder 1. The inflatable sleeve 15 is connected to the inflatable airbag 18 through an air injection port 19;

[0025] As a further solution of the present invention: A high-temperature resistant silicone skin is provided on the inner wall of the fixing ring 8;

[0026] As a further solution of the present invention: The first limiting rod 10 is hingedly connected to the first limiting plate 11, and the second limiting plate 13 is hingedly connected to the second limiting plate 13;

[0027] As a further solution of the present invention: The first limiting plate 11 is sleeved at the arc head position of the CNG gas cylinder 1, and a first anti-slip pad is provided at the sleeved position;

[0028] As a further solution of the present invention: A closed anti-impact shell 21 is arranged outside the inflatable airbag 18;

[0029] As a further solution of the present invention: A second anti-slip pad 21 is provided at the bottom end of the second protective shell 3 corresponding to the CNG gas cylinder 1.

[0030] Working principle of the present invention: When the protection mechanism is in use, first, a buffer assembly is provided on the protection mechanism. When the CNG gas cylinder 1 moves back and forth under the action of inertia, it drives the fixed ring 8 on the outer wall of the gas cylinder to move in the same direction. The fixed ring 8 drives the angle of the buffer rod 7 to change. In cooperation with the sliding column and the return spring 6, the buffer rod 7 drives the connected buffer slider 5 to move relatively or towards each other. On one side of the moving direction of the CNG gas cylinder 1, the angle of the buffer rod 7 expands, the buffer slider 5 moves relatively, and the return spring 6 is stretched. Under the elastic return action of the return spring 6, the inertia force of the CNG gas cylinder 1 is offset. On the other side of the CNG gas cylinder 1, the buffer rod 7 is pulled by the gas cylinder and its angle shrinks, the buffer slider 5 moves towards each other, and the return spring 6 is compressed. Under the elastic return action of the return spring 6, a pulling force is generated on the gas cylinder. At the same time, a high-temperature resistant silica gel skin is provided on the inner wall of the fixed ring 8, and the flexible buffer assembly reduces the fatigue damage of the CNG gas cylinder 1 and enhances the buffer force. When the shock-absorbing slider moves on the sliding column, it drives the articulated rod 9 on the shock-absorbing slider to move. The articulated rod 9 drives the first limiting rod 10 to move through being articulated with the first protective shell 2. The moving directions of the buffer sliders 5 on both sides of the CNG gas cylinder 1 are opposite. On the side where the buffer sliders 5 move relatively, the articulated rod 9 drives the first limiting rod 10 to move leftward, and the first limiting rod 10 drives the limiting plate to move leftward. At the same time, the buffer slider 5 drives the second limiting rod 12 to move rightward, and the second limiting rod 12 drives the second limiting plate 13 to move rightward. On the side where the buffer sliders 5 move towards each other, the articulated rod 9 drives the first limiting rod 10 to move rightward, and the first limiting rod 10 drives the limiting plate to move rightward. At the same time, the buffer slider 5 drives the second limiting rod 12 to move leftward, and the second limiting rod 12 drives the second limiting plate 13 to move leftward. The CNG gas cylinder 1 is fixed and limited by the opposite staggered inclination of the first limiting plate 11 and the second limiting plate 13. And the first limiting plate 11 is sleeved at the position of the arc head of the CNG gas cylinder 1, and a first anti-slip pad 20 is provided at the sleeved position. The second protective shell 3 body is provided with a second anti-slip pad 21 corresponding to the bottom end of the CNG gas cylinder 1, enhancing the head and tail fixation of the CNG gas cylinder 1 and enhancing the stability of the CNG gas cylinder 1. If the CNG gas cylinder 1 is subjected to a large impact and generates a large displacement, through the sliding of the buffer slider 5, the push rod 17 is driven to move. When the push rod 17 moves into the inflation sleeve 15, the inflation piston 16 is driven to move. Then, gas is injected into the inflation airbag 18 through the air injection port 19 to wrap the periphery of the middle part of the CNG gas cylinder 1, effectively protecting the relatively fragile middle part of the CNG gas cylinder 1.

[0031] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0032] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A vehicle-mounted CNG bottle protection mechanism, comprising a CNG gas cylinder (1), a buffer assembly, a limit assembly, and an anti-shock assembly. A first protective shell (2) and a second protective shell (3) are provided on the outer wall of the CNG gas cylinder (1). A buffer assembly is provided in the first protective shell (2), a limit assembly is connected inside the first protective shell (2), and an anti-shock assembly is connected between the first protective shell (2) and the second protective shell (3). The buffer assembly includes slide bars (4) located on both sides of the CNG gas cylinder (1). The slide bars (4) are fixedly connected to the protective shell. Two buffer sliders (5) are sleeved on the slide bars (4). A return spring (6) is fixedly connected between the two buffer sliders (5). Buffer rods (7) are hinged on the buffer sliders (5). The other ends of the two buffer rods (7) are hinged to the same fixed ring (8). The buffer slider (5) near the top of the CNG gas cylinder (1) inside the first protective shell (2) is connected to a limit assembly. The limit assembly includes a hinge rod (9) with one end connected to the buffer slider (5). The other end of the hinge rod (9) is connected to a first limit rod (10). The first limit rod (10) is connected to a first limit plate (11). A second limit rod (12) is fixedly connected to the side of the buffer slider (5) near the top of the CNG gas cylinder (1). The second limit rod (12) passes through the top of the protective shell and is connected to a second limit plate (13). The anti-shock assembly includes a fixing plate (14) located between the first protective shell (2) and the second protective shell (3). The fixing plate (14) is fixedly connected to an inflatable sleeve (15). Two inflatable pistons (16) are slidably arranged between the inflatable sleeves (15). The inflatable pistons (16) are fixedly connected to push rods (17). The push rods (17) are fixedly connected to the buffer sliders (5). An inflatable airbag (18) is provided on the outer wall of the CNG gas cylinder (1). The inflatable sleeve (15) is connected to the inflatable airbag (18) through an air injection port (19).

2. The vehicle-mounted CNG cylinder protection mechanism according to claim 1, characterized in that: A high-temperature resistant silica gel skin is provided on the inner wall of the fixed ring (8).

3. The on-vehicle CNG cylinder protection mechanism according to claim 1, wherein: The first limit rod (10) and the first limit plate (11), and the second limit plate (13) and the second limit plate (13) are hinged connections.

4. A vehicle-mounted CNG cylinder protection mechanism according to claim 1, characterized in that: The first limit plate (11) is sleeved at the arc head position of the CNG gas cylinder (1), and a first anti-slip pad (20) is provided at the sleeved position.

5. The vehicle-mounted CNG cylinder protection mechanism according to claim 1, characterized in that: A closed anti-shock shell (21) is provided outside the inflatable airbag (18).

6. The protective mechanism for an in-vehicle CNG cylinder according to claim 1, characterized in that: A second anti-slip pad (22) is provided at the bottom end of the second protective shell (3) corresponding to the CNG gas cylinder (1).

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