Bottle body fixing device, LNG assembly and vehicle

Abstract

The invention belongs to the technical field of automobile manufacturing, and discloses a bottle body fixing device, an LNG assembly and a vehicle. The support comprises a support body, the support body comprises a first supporting plate and a second supporting plate which are arranged at intervals in the axial direction of a bottle body, the first supporting plate is connected with the second supporting plate through a connecting plate, and the upper end of the first supporting plate is bent towards the side away from the second supporting plate to form a first lug plate; the side, away from the first supporting plate, of the upper end of the second supporting plate is bent to form a second lug plate, and the first lug plate and the second lug plate are of arc-shaped structures with upward openings and are used for supporting a bottle body; the problems that in the prior art, after a bottle body is installed on a supporting column, due to the fact that the contact area is too small, the bottle body is damaged, the bottle body cannot be continuously used, and the overall weight of the supporting column is high are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile manufacturing, and particularly relates to a bottle fixing device, an LNG assembly and a vehicle. Background Art

[0002] In the field of heavy commercial vehicles, in order to actively respond to the national energy conservation and emission reduction policy call, liquefied natural gas (LNG) has gradually replaced traditional diesel fuel as a clean energy source. Since LNG needs to be stored in liquid form under the low temperature condition of -162°C, its storage device needs to have both ultra-low temperature heat preservation performance and high-strength structural characteristics at the same time. At present, the industry generally uses a special bottle with a double-layer vacuum insulation structure as the storage container, and such bottles are usually arranged horizontally on the upper side of the frame at the rear of the carriage. In actual application scenarios, the fixing device of the on-vehicle LNG bottle faces multiple technical challenges, and the core contradiction stems from the balance between the extreme complexity of the vehicle operating conditions and the safety requirements of the bottle system.

[0003] The current fixing scheme mainly adopts a two-stage support structure: two groups of casting struts are symmetrically arranged at the lower part in the axial direction of the bottle, and each group of struts is rigidly connected to the longitudinal beam of the vehicle frame through high-strength bolts or other fixing forms. A connection structure with the bottle is designed at the top of the strut. To improve the overall structural stiffness, the two groups of struts are transversely connected by an I-shaped cross beam to form a stable frame structure. At the upper part of the bottle, a high-strength metal braided belt is used in cooperation with a locking mechanism to implement bundling and fixing, and theoretically a circular restraint system is formed. Although this structural system can meet the basic fixing requirements, it exposes multiple key technical defects in actual applications.

[0004] First of all, the problem of system self-weight is particularly prominent. The total mass of a single LNG bottle can reach 800 - 1200 kg in the full-load state. The additional structures such as the cast iron struts (single-piece mass about 80 kg), the reinforcing cross beam (about 50 kg) and the connection components included in the support system cumulatively increase the ineffective load by more than 200 kg. For heavy commercial vehicles that pay attention to the effective load, this directly affects the transportation economic benefits. More seriously, this gravity-concentrated support system will cause structural damage under the long-term dynamic load: the contact area between the strut and the bottle is narrow, and the actual contact area is insufficient. During the continuous driving of the vehicle, especially when encountering road bumps, high-frequency and small-amplitude vibrations will occur between the bottle and the strut, and damage will quickly appear on the bottle body of the bottle.

[0005] Secondly, there are serious hidden dangers in the dynamic stability of the existing structure. According to actual working condition test data, when heavy trucks are driving on unpaved roads, the vertical acceleration of the frame can reach 3-5g, and the lateral acceleration can reach 1.5-2g. Under this kind of composite vibration excitation, the bottle body will not only produce vertical jumps, but also induce axial movement and radial swing. Since the existing fixing belt only provides unidirectional constraints, it cannot effectively suppress multi-directional displacement, resulting in periodic collisions between the bottle body and the pillar. The long-term effect of this alternating impact load will cause two typical failure modes: first, the bottle body shell will produce plastic deformation at the local impact point, forming a dent damage with a depth of up to 3-5mm, which will cause the constraint failure in severe cases; second, fatigue cracks will appear at the root of the pillar connecting leg due to stress concentration. Typical cases show that cast iron pillars will bend and deform after a service cycle of 8-12 months, with a maximum deflection of up to 10-15mm, and completely lose the positioning function. When the vehicle is emergency braking or turning at high speed, the inertial load will cause the bottle body to produce additional displacement. The existing fixing system is difficult to effectively constrain this transient load, and there are serious safety hazards. Summary of the invention

[0006] The purpose of the present invention is to provide a bottle fixing device, an LNG assembly and a vehicle, so as to solve the problem in the prior art that after the bottle is installed on the pillar, the contact area is too low, resulting in damage to the bottle, which in turn makes the bottle unusable and the overall weight of the pillar is high.

[0007] To achieve this object, the present invention adopts the following technical solution: the present invention provides a bottle body fixing device, including a bracket main body, the bracket main body includes a first support plate and a second support plate arranged at intervals along the axial direction of the bottle body, the first support plate is connected to the second support plate through a connecting plate, the upper end of the first support plate is bent toward a side away from the second support plate to form a first ear plate, the upper end of the second support plate is bent toward a side away from the first support plate to form a second ear plate, the first ear plate and the second ear plate are arc-shaped structures with openings facing upwards, and the first ear plate and the second ear plate are used to support the bottle body.

[0008] Preferably, the first support plate, the second support plate, the connecting plate, the first ear plate and the second ear plate are integrally formed.

[0009] Preferably, the connecting plate is located at the bottom of the first supporting plate and the second supporting plate, and the first supporting plate and the second supporting plate form a U-shaped structure with an opening facing upward.

[0010] Preferably, the bottle fixing device further comprises a tray, one end of the tray is fixed to the upper surface of the first ear plate, and the other end of the tray is fixed to the upper surface of the second ear plate, and the upper surface of the tray forms an arc support surface for supporting the bottle body.

[0011] Preferably, arc-shaped edges are bent downward on both sides of the tray to form bending parts, the first ear plate is clamped between one of the bending parts and one end of the tray, and the second ear plate is clamped between the other bending part and the other end of the tray.

[0012] Preferably, a reinforcing plate is provided between the first support plate and the second support plate, one end of the reinforcing plate is connected to the first support plate, and the other end is connected to the second support plate.

[0013] Preferably, first flanges are formed by folding the two ends of the first support plate in the length direction away from the second support plate, and the first flanges are smoothly connected to the first ear plates;

[0014] And / or, second flanges are formed by folding the two ends of the second support plate in the length direction away from the first support plate, and the second flanges are smoothly connected to the second ear plates.

[0015] Preferably, the first flanges and the second flanges are connected by connecting frames, and the two connecting frames located at the two ends of the bracket body in the length direction are respectively used to connect the two ends of the same hoop band in a one-to-one correspondence.

[0016] An LNG assembly includes the bottle fixing device described above, and further includes a bottle body and two sets of hoop bands. The bottle body is filled with liquid LNG. There are two bottle fixing devices, and the bottle fixing devices are arranged at intervals along the axial direction of the bottle body;

[0017] One axial end of the bottle body is supported by the first ear plate and the second ear plate of one of the bottle fixing devices, and the other axial end of the bottle body is supported by the first ear plate and the second ear plate of the other bottle fixing device;

[0018] The two hoop bands are arranged in one-to-one correspondence with the two bottle fixing devices. One end of the hoop band is connected to one end of the bracket body in the length direction of the corresponding bottle fixing device, and the other end of the hoop band is connected to the other end of the bracket body in the length direction of the corresponding bottle fixing device.

[0019] A vehicle includes the LNG assembly described above, and further includes a vehicle body, and the bracket body is fixed to the vehicle body.

[0020] Beneficial effects: By installing two sets of bottle fixing devices on the bottle body and arranging the LNG assembly on the vehicle body, the contact area between the first ear plate and the second ear plate on the upper sides of the first support plate and the second support plate is increased, thereby improving the stability of the bottle body during vehicle driving. At the same time, the contact area between the first ear plate and the second ear plate and the bottle body is increased. Due to the increased contact area, the pressure per unit area is reduced, the impact on the bottle body is reduced, the probability of damage to the bottle body by the bottle fixing device is reduced, and thus the safety can be improved and the damage to the bottle body can be reduced. At the same time, the first ear plate and the second ear plate increase the contact length in the axial direction of the bottle body, making the two sets of bottle fixing devices on the bottle body independent of each other and reducing the total weight of the bottle fixing device. Brief Description of the Drawings

[0021] Figure 1 is the main body diagram of the bracket of the present invention;

[0022] Figure 2 is the main body diagram of the bottle fixing device of the present invention;

[0023] Figure 3 is the main body diagram of the bracket of the present invention (with the first flanging and the second flanging);

[0024] Figure 4 is the installation diagram of the bottle fixing device of the present invention;

[0025] Figure 5 is the side view of the bottle fixing device of the present invention.

[0026] In the figure: 1. Bracket main body; 11. First support plate; 112. First ear plate; 113. First flanging; 12. Second support plate; 122. Second ear plate; 123. Second flanging; 13. Connecting plate; 2. Bottle body; 3. Tray; 31. Bending part; 4. Reinforcing plate; 5. Bolt; 6. Hoop band. Detailed Description of the Invention

[0027] The present invention will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. In addition, it should be noted that only the parts related to the present invention are shown in the drawings for the convenience of description, rather than all the structures.

[0028] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0029] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over", and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath", and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0030] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0031] Under the prior art, since the contact area between the bottle body fixing device and the bottle body itself is small, when vibrations that occur frequently during vehicle driving occur, the strut impacts some areas on the bottle body, causing the bottle body to deform and resulting in the bottle body being unable to be used continuously. At the same time, in order to stably fix the bottle body to avoid shaking, the struts on the lower side of the bottle body are connected by a cross beam, which will cause the existing bottle body fixing device to be heavy and the vehicle to have high energy consumption.

[0032] To solve the above problems, as Figure 1 , Figure 2 , Figure 4 and Figure 5As shown in the figure, the present invention provides a bottle fixing device, including a bracket main body 1. The bracket main body 1 includes a first support plate 11 and a second support plate 12 arranged at intervals along the axial direction of the bottle. The first support plate 11 is connected to the second support plate 12 through a connecting plate 13. An upper end of the first support plate 11 is bent away from the second support plate 12 to form a first ear plate 112, and an upper end of the second support plate 12 away from the first support plate 11 is bent to form a second ear plate 122. The first ear plate 112 and the second ear plate 122 are arc-shaped structures with openings facing upwards, and the first ear plate 112 and the second ear plate 122 are used to support the bottle.

[0033] The bottom of the bracket main body 1 of the present invention is a connecting plate 13. The connecting plate 13 can be fixed to the vehicle frame in the form of direct screwing or welding. The first support plate 11 and the second support plate 12 on the upper side of the connecting plate 13 are simultaneously erected at the bottom of the bottle 2. At the same time, the upper edges of the first support plate 11 and the second support plate 12 are respectively turned outwards to form the first ear plate 112 and the second ear plate 122. Since the first ear plate 112 and the second ear plate 122 are arc-shaped structures with openings facing upwards, this can increase the contact area with the bottle 2, reduce the pressure of the bottle fixing device on the bottle 2, and reduce the probability of deformation of the bottle 2. At the same time, since the first ear plate 112 and the second ear plate 122 increase the contact area with the bottle 2, the bottle 2 is more stable after being connected to the bottle fixing device. Furthermore, the two groups of bottle fixing devices on the bottle 2 can be independent of each other, without the need to measure and reinforce the bottle fixing device again, which can reduce the overall weight of the bottle fixing device and reduce the energy consumption of the vehicle.

[0034] During the processing of the present invention, the first support plate 11, the second support plate 12, the connecting plate 13, the first ear plate 112 and the second ear plate 122 are integrally formed. The bottle fixing device of the present invention is formed by bending and stamping a single sheet of plate, with stronger integrity, capable of withstanding different impacts, and having a lower probability of damage, and can cope with impacts in different scenarios.

[0035] The connecting plate 13 is located at the bottom of the first support plate 11 and the second support plate 12. The first support plate 11 and the second support plate 12 form a U-shaped structure with an opening facing upwards. During the bending process, it is necessary to make the first support plate 11 perpendicular to the connecting plate 13 and the second support plate 12 perpendicular to the connecting plate 13, so that the side of the bracket main body 1 is U-shaped, which is convenient for unifying processing parameters and reducing processing difficulty. At the same time, after the first ear plate 112 and the second ear plate 122 are bent by 90° in the same way, they can be consistent and simultaneously support the bottle 2, thereby improving the stability of the bottle 2 during vehicle operation and reducing the probability of damage to the bottle 2.

[0036] The bottle fixing device of the present invention further includes a tray 3. The tray 3 is mounted between the first support plate 11 and the second support plate 12. One end of the tray 3 is fixed to the upper surface of the first ear plate 112, and the other end is fixed to the upper surface of the second ear plate 122. An arc support surface for supporting the bottle is formed on the upper surface of the tray 3, and the upper surface fits with the arc surface of the bottle 2, which can fix the bottle 2 more stably, improve the safety of the bottle 2. The tray 3 covers the gap between the first ear plate 112 and the second ear plate 122, further increasing the contact area between the bottle 2 and the bottle fixing device, so that the pressure received by the bottle 2 is smaller and the probability of damage to the bottle 2 is lower.

[0037] Arc-shaped edges are bent downward on both sides of the tray 3 to form bending parts 31. The first ear plate 112 is clamped between one of the bending parts 31 and one end of the tray 3, and the second ear plate 122 is clamped between the other bending part 31 and the other end of the tray 3. In order to fix the tray 3 on the lower first ear plate 112 and second ear plate 122, both sides of the tray 3 are bent to form bending parts 31. An insertion slot is formed between the bending parts 31 and the main body of the tray 3, so that the first ear plate 112 and the second ear plate 122 can be inserted and fixed in the insertion slot, enabling the tray 3 to be stably fixed on the first ear plate 112 and the second ear plate 122, avoiding shaking, and increasing the contact area between the bottle 2 and the tray 3 to enhance the friction force.

[0038] A reinforcing plate 4 is installed between the first support plate 11 and the second support plate 12. One end of the reinforcing plate 4 is connected to the first support plate 11, and the other end is connected to the second support plate 12. A first through hole is opened on the reinforcing plate 4, and second through holes are opened on the first support plate 11 and the second support plate 12. A bolt 5 passes through the first through hole and the second through hole and is screwed with a nut.

[0039] In order to further enhance the structural rigidity of the bottle fixing device itself, a reinforcing plate 4 is added between the first support plate 11 and the second support plate 12. Both sides of the reinforcing plate 4 of the present invention can be fixed by bolts 5, and the reinforcing plate 4 can also be installed between the first support plate 11 and the second support plate 12 by welding. Second through holes are opened at different positions on the first support plate 11 and the second support plate 12, which can change the processing position of the reinforcing plate 4. At the same time, the number of reinforcing plates 4 for reinforcement can be freely adjusted, and the appropriate number of reinforcing plates 4 and the appropriate reinforcement position can be selected according to the bottle 2 of different weights.

[0040] Such as Figure 3As shown in the figure, at both ends of the first support plate 11 in the length direction, flanges 113 are formed by folding towards the side away from the second support plate 12, and the flange 113 is smoothly connected to the first ear plate 112. The anti-bending ability of the first support plate 11 is further improved through the flange 113, enabling the installation of heavier bottles 2 on the bottle fixing device. Since the first ear plate 112 and the flange 113 are in an arc state, it is convenient for the stamping machine to bend during subsequent processing, ensuring that the flange 113, the first ear plate 112, and the first support plate 11 are integrally formed, and avoiding the fracture of the connection position between the first ear plate 112 and the flange 113 after bending. The flanges 113 are symmetrically arranged on both sides of the first support plate 11, and the first support plate 11 can be reinforced from both sides to improve the anti-bending ability.

[0041] At both ends of the second support plate 12 in the length direction, flanges 123 are formed by folding towards the side away from the first support plate 11, and the flange 123 is smoothly connected to the second ear plate 122. The anti-bending ability of the second support plate 12 is further improved through the flange 123, enabling the installation of heavier bottles 2 on the bottle fixing device. Since the second ear plate 122 and the flange 123 are in an arc state, it is convenient for the stamping machine to bend during subsequent processing, ensuring that the flange 123, the second ear plate 122, and the second support plate 12 are integrally formed, and avoiding the fracture of the connection position between the second ear plate 122 and the flange 123 after bending. The flanges 123 are symmetrically arranged on both sides of the second support plate, and the second support plate 12 can be reinforced from both sides to improve the anti-bending ability.

[0042] The first flange 113 and the second flange 123 are connected by a connecting frame. The two connecting frames located at both ends of the support body 1 in the length direction are respectively used to connect the two ends of the same hoop 6 in a one-to-one correspondence. The bottle 2 is fixed by the hoop 6 to make the bottle more stable.

[0043] An LNG assembly includes a bottle fixing device, a bottle 2, and two sets of hoops 6. The bottle 2 is filled with liquid LNG. There are two bottle fixing devices, and the bottle fixing devices are arranged at intervals along the axis of the bottle 2. One axial end of the bottle 2 is supported by the first ear plate 112 and the second ear plate 122 of one bottle fixing device, and the other axial end of the bottle 2 is supported by the first ear plate 112 and the second ear plate 122 of the other bottle fixing device. The two hoops 6 are arranged in one-to-one correspondence with the two bottle fixing devices. One end of the hoop 6 is connected to one end of the support body 1 of the corresponding bottle fixing device in the length direction, and the other end of the hoop 6 is connected to the other end of the support body 1 of the corresponding bottle fixing device in the length direction. The final fixing of the bottle 2 is achieved through the hoop 6, and the bottle is fixed on the bottle fixing device. At the same time, the LNG assembly can be stably installed on the vehicle body.

[0044] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A bottle fixing device, characterized in that: The invention comprises a support body (1), wherein the support body (1) comprises a first support plate (11) and a second support plate (12) which are arranged at intervals along the axial direction of a bottle body (2); the first support plate (11) is connected to the second support plate (12) via a connecting plate (13); the upper end of the first support plate (11) is bent away from the second support plate (12) to form a first ear plate (112); the upper end of the second support plate (12) is bent away from the first support plate (11) to form a second ear plate (122); the first ear plate (112) and the second ear plate (122) are arc-shaped structures with openings facing upwards; the first ear plate (112) and the second ear plate (122) are used to support the bottle body.

2. The bottle fixing device according to claim 1, characterized in that: The first support plate (11), the second support plate (12), the connecting plate (13), the first ear plate (112) and the second ear plate (122) are integrally formed.

3. The bottle fixing device according to claim 2, characterized in that: The connecting plate (13) is located at the bottom of the first supporting plate (11) and the second supporting plate (12), and the first supporting plate (11) and the second supporting plate (12) form a U-shaped structure with an opening facing upward.

4. The bottle fixing device according to claim 1, characterized in that: The bottle body fixing device also includes a tray (3), one end of the tray (3) is fixed to the upper surface of the first ear plate (112), and the other end is fixed to the upper surface of the second ear plate (122), and the upper surface of the tray (3) forms an arc support surface for supporting the bottle body.

5. The bottle fixing device according to claim 4, characterized in that: The tray (3) has two downwardly bent arc-shaped edges on both sides thereof to provide bent portions (31); the first ear plate (112) is clamped between one of the bent portions (31) and one end of the tray (3); and the second ear plate (122) is clamped between another of the bent portions (31) and the other end of the tray (3).

6. The bottle fixing device according to claim 1, characterized in that: A reinforcing plate (4) is provided between the first supporting plate (11) and the second supporting plate (12); one end of the reinforcing plate (4) is connected to the first supporting plate (11), and the other end is connected to the second supporting plate (12).

7. The bottle fixing device according to claim 1, characterized in that: Both ends of the first support plate (11) in the length direction are folded toward a side away from the second support plate (12) to form a first flange (113), and the first flange (113) is smoothly connected to the first ear plate (112); And / or, both ends of the second support plate (12) in the length direction are folded toward a side away from the first support plate (11) to form a second flange (123), and the second flange (123) is smoothly connected to the second ear plate (122).

8. The bottle fixing device according to claim 7, characterized in that: The first flange (113) and the second flange (123) are connected via a connecting frame, and the two connecting frames located at the two ends of the length direction of the bracket body (1) are respectively used to connect the two ends of the same hoop (6) in a one-to-one correspondence.

9. An LNG assembly, characterized in that: The bottle fixing device according to claim 8 further comprises a bottle (2) and two sets of hoops (6), wherein the bottle (2) is filled with liquid LNG, and two bottle fixing devices are provided, and the bottle fixing devices are arranged at intervals along the axial direction of the bottle (2); One axial end of the bottle body (2) is supported by the first ear plate (112) and the second ear plate (122) of one of the bottle body (2) fixing devices, and the other axial end of the bottle body (2) is supported by the first ear plate (112) and the second ear plate (122) of another of the bottle body (2) fixing devices; The two bands (6) are arranged in one-to-one correspondence with the two bottle fixing devices, one end of the band (6) is connected to one end of the bracket body (1) of the corresponding bottle fixing device in the length direction, and the other end of the band (6) is connected to the other end of the bracket body (1) of the corresponding bottle fixing device in the length direction.

10. A vehicle, characterized in that: It comprises the LNG assembly as claimed in claim 9, and also comprises a vehicle body, and the bracket body (1) is fixed to the vehicle body.

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