Under-vehicle air storage system mounting framework and under-vehicle air storage system

By designing the "sandwich" structure and beam body connection of the air cylinder mounting frame and the air circuit control module mount in the under-vehicle air storage system of rail vehicles, the problem of insufficient structural strength in the existing technology is solved, and higher mounting frame strength and stiffness are achieved, which improves the service life and safety of the equipment.

CN120327573APending Publication Date: 2025-07-18CRRC QINGDAO SIFANG CO LTD
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Patent Information

Application Number
CN202510696265.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-05-27
Publication Date
2025-07-18

AI Technical Summary

Technical Problem

In existing rail vehicles, the air circuit control module mount is bolted to the air cylinder mounting frame, resulting in low structural strength, affecting the service life of the equipment and the safety of the vehicle operation.

Method used

A skeleton of undercarrier air storage system is designed, using air cylinder mounting frame and air circuit control module mount. By welding the mounting plate and rib plate in the horizontal direction, forming a "sandwich" structure, increasing the structural strength, and using plug-in and welded beam body connection in the longitudinal direction to form a rectangular outer frame and improving the overall stiffness.

Benefits of technology

The structural strength and stiffness of the mounting frame are improved to ensure the service life of the equipment and the safety of the vehicle operation.

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Abstract

The invention discloses an under-vehicle air storage system mounting framework and an under-vehicle air storage system, and relates to the technical field of vehicle engineering. In the mounting framework, a first end beam is arranged at one transverse end of the air cylinder mounting frame; the gas circuit control module mounting seat comprises a mounting plate and a first rib plate which are sequentially arranged in the transverse direction, the mounting plate comprises an upper mounting plate part and a lower mounting plate part which are sequentially arranged from top to bottom, and the first rib plate comprises an upper rib plate part and a lower rib plate part which are sequentially arranged from top to bottom; the upper mounting plate part and the upper rib plate part are transversely welded to the two opposite vertical faces of the first end beam, and the lower rib plate part is transversely welded to one side of the lower mounting plate part. At the moment, the upper structure of the gas circuit control module mounting seat comprises an upper mounting plate part and an upper rib plate part, the upper mounting plate part and the upper rib plate part are clamped and welded to the first end beam from the two sides in the transverse direction, a sandwich structure is formed, the structural strength and rigidity are guaranteed, and in the lower structure, one side of a lower mounting plate part can be supported and reinforced through the lower rib plate part; therefore, the structural strength of the mounting framework can be improved.
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Description

Technical Field

[0001] The present invention relates to the technical field of vehicle engineering, and particularly relates to an installation skeleton for an underbody air storage system and an underbody air storage system. Background Art

[0002] In an existing rail vehicle, it includes an underbody air storage system, and its installation skeleton includes a cylinder mounting frame and an air circuit control module mounting seat. The cylinder mounting frame is used to mount a cylinder, and the air circuit control module mounting seat is used to mount an air circuit control module, and the air circuit control module can perform corresponding control on the cylinder.

[0003] Among them, in an existing assembly method, the air circuit control module mounting seat is hoisted onto the cylinder mounting frame by means of bolt fixation, resulting in relatively low structural strength, affecting the service life of the equipment and the safety of vehicle operation.

[0004] Therefore, how to improve the structural strength of the installation skeleton is a technical problem that those skilled in the art need to solve at present. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide an installation skeleton for an underbody air storage system and an underbody air storage system, and the installation skeleton has relatively high structural strength.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] An installation skeleton for an underbody air storage system includes a cylinder mounting frame and an air circuit control module mounting seat; one end of the cylinder mounting frame in the transverse direction is a first end beam; the air circuit control module mounting seat includes a mounting plate and a first rib plate arranged in sequence in the transverse direction. The mounting plate includes an upper mounting plate portion and a lower mounting plate portion arranged in sequence from top to bottom, and the first rib plate includes an upper rib plate portion and a lower rib plate portion arranged in sequence from top to bottom. The upper mounting plate portion and the upper rib plate portion are welded to two opposite vertical surfaces of the first end beam in the transverse direction, and the lower rib plate portion is welded to one side of the lower mounting plate portion in the transverse direction.

[0008] Exemplarily, the first end beam includes a first top plate, a first vertical plate, and a first bottom plate arranged in sequence from top to bottom; the first top plate and the first bottom plate are fixed to the first side of the first vertical plate in the transverse direction, and a notch is provided on the first bottom plate; the upper rib plate portion extends upward through the notch above the first vertical plate and is welded to the first vertical plate and the first top plate; the upper mounting plate portion is fixed to the second side of the first vertical plate in the transverse direction.

[0009] Exemplarily, the upper mounting plate portion includes a first mounting seat vertical plate; the lower mounting plate portion includes a first mounting seat side plate and a second mounting seat vertical plate arranged in sequence from top to bottom; one end of the first mounting seat side plate in the transverse direction is fixed to the bottom end of the first mounting seat side plate, and the other end is fixed to the top end of the second mounting seat vertical plate; in the transverse direction, a part of the top surface of the lower rib plate portion is fixed below the upper rib plate portion, and a part of the top surface is also welded to the bottom surface of the first mounting seat side plate.

[0010] Exemplarily, the air cylinder mounting bracket includes a mounting beam, two end beams and two cross beams. One of the two end beams is the first end beam; the two end beams are arranged in sequence along the transverse direction, and the two cross beams are arranged in sequence along the longitudinal direction; both ends of the cross beam are inserted and welded into the two end beams respectively; the mounting beam is located between the two end beams in the transverse direction, and both ends are inserted and welded into the two cross beams respectively.

[0011] Exemplarily, the end beam is a U-shaped beam, and the concave surfaces of the two end beams are arranged opposite to each other in the transverse direction; first groove portions are respectively provided at both ends of the concave surface of the end beam in the longitudinal direction, and a second groove portion is in the middle; the internal height of the first groove portion is greater than the internal height of the second groove portion; the end of the cross beam has a cross beam insertion plate; the cross beam insertion plate is inserted and welded into the first groove portion and abuts against the end surface of the second groove portion in the longitudinal direction along the longitudinal direction.

[0012] Exemplarily, the mounting beam includes a mounting beam bottom plate and two mounting beam vertical plates. The two mounting beam vertical plates are fixed above both ends of the mounting beam bottom plate in the transverse direction, and both ends of the mounting beam vertical plates extend relative to the mounting beam bottom plate in the longitudinal direction to respectively form mounting beam insertion plates, and the mounting beam insertion plates are inserted and welded into the corresponding cross beam interiors.

[0013] Exemplarily, both the end beam and the mounting beam are longitudinal beams; the air cylinder mounting bracket further includes a layered plate, and the layered plate is provided above at least one of the longitudinal beams; the layered plate includes an inverted U-shaped plate with the concave surface facing down; the two free ends of the inverted U-shaped plate are sequentially fixed to the top surfaces of both ends of the longitudinal beam in the transverse direction, or are respectively fixed to the top surfaces of the two cross beams.

[0014] An undercarriage air storage system includes the above-mentioned undercarriage air storage system mounting skeleton as described above; it further includes an air cylinder fixed to the air cylinder mounting bracket; a suspension seat is provided at the top of the air cylinder, and the suspension seat is hoisted and fixed to the air cylinder mounting bracket. An annular reinforcing belt is sleeved outside the air cylinder, and a part of the structure of the suspension seat extends into the space between the reinforcing belt and the air cylinder, so that the suspension seat is fixed to the air cylinder through the reinforcing belt.

[0015] Exemplarily, a drain seat is further provided on the air cylinder; the drain seat is an outwardly convex drain seat, the air cylinder includes an outer layer and an inner bladder disposed in the outer layer, the bottom of the inner bladder has a downwardly convex mounting portion, the top of the outwardly convex drain seat is embedded in the mounting portion, and the bottom of the outwardly convex drain seat protrudes downward from the outer surface of the air cylinder; and / or, the drain seat is a pipe-type drain seat, the pipe-type drain seat includes a drain pipe and a drain cock, the drain pipe is disposed in the inner cavity of the air cylinder, and the inlet of the drain pipe faces the lowest point inside the air cylinder, the outlet of the drain pipe is connected to the drain cock, and the drain cock passes through and is fixed to the air cylinder.

[0016] Exemplarily, a fireproof layer and / or a light-proof layer and / or an end strengthening protection layer are provided on the outer side of the air cylinder.

[0017] The underbody air storage system installation skeleton provided by the present invention includes an air cylinder mounting bracket and a gas circuit control module mounting seat; one end of the air cylinder mounting bracket in the transverse direction is a first end beam; the gas circuit control module mounting seat includes a mounting plate and a first rib plate arranged in sequence in the transverse direction, the mounting plate includes an upper mounting plate portion and a lower mounting plate portion arranged in sequence from top to bottom, the first rib plate includes an upper rib plate portion and a lower rib plate portion arranged in sequence from top to bottom, the upper mounting plate portion and the upper rib plate portion are welded to two opposite vertical surfaces of the first end beam in the transverse direction, and the lower rib plate portion is welded to one side of the lower mounting plate portion in the transverse direction.

[0018] In the above-mentioned underbody air storage system installation skeleton, the upper structure of the gas circuit control module mounting seat includes an upper mounting plate portion and an upper rib plate portion, which clamp and weld to the first end beam from both sides in the transverse direction to form a "sandwich" structure, ensuring the structural strength and stiffness. Moreover, in the lower structure of the gas circuit control module mounting seat, one side of the lower mounting plate portion can also be supported and reinforced by the lower rib plate portion, thereby improving the structural strength of the installation skeleton.

[0019] The underbody air storage system provided by the present invention includes the above-mentioned underbody air storage system installation skeleton, and the structural strength of its installation skeleton is also relatively high. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0021] Figure 1 It is a schematic structural diagram of the first specific embodiment of the underbody air storage system provided by the present invention;

[0022] Figure 2The front view of the first specific embodiment of the underbody air storage system provided by the present invention;

[0023] Figure 3 The partial structural schematic diagram of the first specific embodiment of the underbody air storage system provided by the present invention;

[0024] Figure 4 The structural schematic diagram of the first perspective of the mounting skeleton of the underbody air storage system provided by the present invention in the first specific embodiment;

[0025] Figure 5 The structural schematic diagram of the second perspective of the mounting skeleton of the underbody air storage system provided by the present invention in the first specific embodiment;

[0026] Figure 6 For Figure 5 The partial enlarged view;

[0027] Figure 7 The exploded view of the mounting skeleton of the underbody air storage system provided by the present invention in the first specific embodiment;

[0028] Figure 8 The partial sectional view of the mounting skeleton of the underbody air storage system provided by the present invention in the first specific embodiment;

[0029] Figure 9 The structural schematic diagram of the first end beam in the first specific embodiment of the mounting skeleton of the underbody air storage system provided by the present invention;

[0030] Figure 10 The structural schematic diagram of the cross beam in the first specific embodiment of the mounting skeleton of the underbody air storage system provided by the present invention;

[0031] Figure 11 The assembly drawing of the cross beam and the end beam in the first specific embodiment of the mounting skeleton of the underbody air storage system provided by the present invention;

[0032] Figure 12 The structural schematic diagram of the air cylinder in the first specific embodiment of the underbody air storage system provided by the present invention;

[0033] Figure 13 The structural schematic diagram of the hanging seat in the first specific embodiment of the underbody air storage system provided by the present invention;

[0034] Figure 14 The structural schematic diagram of the air cylinder in the second specific embodiment of the underbody air storage system provided by the present invention;

[0035] Figure 15 The structural schematic diagram of the convex drainage seat in the first specific embodiment of the underbody air storage system provided by the present invention;

[0036] Figure 16 The sectional view of the air cylinder in the first specific embodiment of the underbody air storage system provided by the present invention;

[0037] Figure 17 For Figure 16 an enlarged view of part A;

[0038] Figure 18 This is a schematic structural view of the air cylinder in the third specific embodiment of the underbody air storage system provided by the present invention.

[0039] Reference numerals:

[0040] Air circuit control module mounting seat 1, mounting plate 1-1, upper mounting plate part 1-11, first mounting seat vertical plate 1-111, lower mounting plate part 1-12, first mounting seat side plate 1-121, second mounting seat vertical plate 1-122, second mounting seat side plate 1-123, first rib plate 1-2, upper rib plate part 1-21, lower rib plate part 1-22, second rib plate 1-3;

[0041] Air cylinder mounting bracket 2, first end beam 2-1, first top plate 2-11, first vertical plate 2-12, first bottom plate 2-13, notch 2-131, second end beam 2-2, cross beam 2-3, cross beam insertion plate 2-31, cross beam top plate 2-32, cross beam vertical plate 2-33, cross beam bottom plate 2-34, mounting beam 2-4, mounting beam bottom plate 2-41, weight reduction hole 2-411, mounting beam vertical plate 2-42, mounting beam insertion plate 2-421, end beam 2-6, end beam top plate 2-61, middle part of top plate 2-611, side part of top plate 2-612, first groove part 2-62, second groove part 2-63, layered plate 2-7, inverted U-shaped plate 2-71, intermediate reinforcement plate 2-72, T-shaped threaded fastener 2-8;

[0042] Air cylinder 3, hanging seat 3-1, connecting plate 3-11, hanging ear 3-12, reinforcing plate 3-13, baffle 3-14, reinforcing belt 3-2, outer layer 3-3, inner bladder 3-4, mounting part 3-41, outwardly convex drainage seat 3-5, pipe-type drainage seat 3-6, drainage pipe 3-61, drainage stop valve 3-62, end part strengthening protective layer 3-7, fire and light prevention coating 3-8;

[0043] Pipeline 4;

[0044] Air circuit control module 5;

[0045] Brake control device 6;

[0046] Horizontal X, vertical Y. Detailed implementation manners

[0047] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to 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.

[0048] The core of the present invention is to provide an underbody air storage system mounting skeleton and an underbody air storage system, and the mounting skeleton has relatively high structural strength.

[0049] For a specific embodiment one of the underbody air storage system mounting skeleton provided by the present invention, please refer to Figures 1 to 11 , including: a cylinder mounting bracket 2 and a gas circuit control module mounting seat 1 fixed to one end of the cylinder mounting bracket 2 in the transverse direction X. Specifically, one end of the cylinder mounting bracket 2 in the transverse direction X is a first end beam 2-1, and the gas circuit control module mounting seat 1 is fixed to the first end beam 2-1. Among them, the cylinder mounting bracket 2 is used to mount the air cylinder 3, specifically below the cylinder mounting bracket 2; the gas circuit control module mounting seat 1 is used to mount the gas circuit control module 5.

[0050] As Figures 6 to 8 shown, the gas circuit control module mounting seat 1 includes a mounting plate 1-1 and a first rib plate 1-2 arranged in sequence in the transverse direction X. The mounting plate 1-1 and the first rib plate 1-2 can be integrally formed structures respectively, and the two are welded and fixed together.

[0051] Among them, the mounting plate 1-1 includes an upper mounting plate portion 1-11 and a lower mounting plate portion 1-12 arranged in sequence from top to bottom. The first rib plate 1-2 includes an upper rib plate portion 1-21 and a lower rib plate portion 1-22 arranged in sequence from top to bottom. As Figure 1 and Figure 8 shown, the upper mounting plate portion 1-11 and the upper rib plate portion 1-21 are welded to two opposite vertical surfaces of the first end beam 2-1 in the transverse direction X, and the lower rib plate portion 1-22 is welded to one side of the lower mounting plate portion 1-12 in the transverse direction X, and the other side can be used to mount the gas circuit control module 5.

[0052] It should be noted that the transverse direction X and the longitudinal direction Y are two different directions, such as perpendicular directions, and the longitudinal direction Y can correspond to the direction of the vehicle length.

[0053] In the mounting skeleton provided in this embodiment, the upper structure of the gas circuit control module mounting seat 1 includes an upper mounting plate portion 1-11 and an upper rib plate portion 1-21, which clamp and weld to the first end beam 2-1 from both sides in the transverse direction X to form a "sandwich" structure, as Figure 8The part within the virtual frame can ensure the structural strength and stiffness. In the lower structure of the air circuit control module mounting base 1, one side of the lower mounting plate part 1-12 can also be supported and reinforced by the lower rib plate part 1-22, thereby improving the structural strength of the mounting skeleton.

[0054] Furthermore, as Figures 6 to 8 shown, in the air circuit control module mounting base 1, it includes a mounting plate 1-1 and a first rib plate 1-2. The first rib plate 1-2 and the first end beam 2-1 are arranged on the same side of the mounting plate 1-1 in the transverse direction X.

[0055] In some embodiments, to achieve the connection with the first end beam 2-1, as Figure 8 shown, the first end beam 2-1 includes a first top plate 2-11, a first vertical plate 2-12, and a first bottom plate 2-13 that are sequentially arranged from top to bottom and fixed together. The first top plate 2-11 and the first bottom plate 2-13 are fixed on the first side of the first vertical plate 2-12 in the transverse direction X, corresponding to Figure 8 the right side in Figure 8 , and the upper mounting plate 1-11 is fixed on the second side of the first vertical plate 2-12 in the transverse direction X, corresponding to

[0056] the left side in Figure 9 shown. Additionally, as

[0057] shown, a notch 2-131 is provided on the first bottom plate 2-13, which penetrates the first bottom plate 2-13 up and down. The upper rib plate part 1-21 extends upward through the notch 2-131 above the first vertical plate 2-12 and is welded to the first vertical plate 2-12 and the first top plate 2-11. At this time, the first rib plate 1-2 is inserted into the first end beam 2-1, and the upper rib plate part 1-21 can serve as a reinforcing rib for the inserted first end beam 2-1, which can increase the structural strength and mode of the air circuit control module mounting base 1, improve the torsional resistance characteristics of the first end beam 2-1, and reduce the need for separately provided reinforcing ribs. Figure 8 shown, the upper mounting plate part 1-11 includes a first mounting seat vertical plate 1-111. The lower mounting plate part 1-12 includes a first mounting seat side plate 1-121 and a second mounting seat vertical plate 1-122 that are sequentially arranged from top to bottom. One end of the first mounting seat side plate 1-121 in the transverse direction X is fixed to the bottom end of the first mounting seat side plate 1-121, and the other end is fixed to the top end of the second mounting seat vertical plate 1-122. Specifically, in the transverse direction X, the first mounting seat vertical plate 1-111 and the second mounting seat vertical plate 1-122 are sequentially arranged along the direction away from the first end beam -21. In the transverse direction X, part of the top surface of the lower rib plate part 1-22 is fixed below the upper rib plate part 1-21, and part of the top surface is also welded to the bottom surface of the first mounting seat side plate 1-121. At this time, the lower rib plate part 1-22 can provide strengthening support for the lower mounting plate part 1-12 to prevent the lower mounting plate part 1-12 from deforming.

[0058] In some embodiments, as Figure 8 shown, the lower mounting plate portion 1-12 further includes a second mounting seat side plate 1-123, and the second mounting seat side plate 1-123 is fixed to the bottom end of the second mounting seat vertical plate 1-122. In the transverse direction X, the first mounting seat side plate 1-121 and the second mounting seat side plate 1-123 are located on the same side of the second mounting seat vertical plate 1-122, and the bottom surface of the lower rib plate portion 1-22 is welded to the top surface of the second mounting seat side plate 1-123. At this time, the lower mounting plate portion 1-12 is U-shaped, and the lower rib plate portion 1-22 is attached to and supported within the concave surface of the lower mounting plate portion 1-12 to further improve the structural strength.

[0059] In some embodiments, as Figure 7 shown, in the mounting plate 1-1, the first mounting seat vertical plate 1-111, the first mounting seat side plate 1-121, the second mounting seat vertical plate 1-122, and the second mounting seat side plate 1-123 are formed by bending or flanging the same plate member to ensure the structural strength and reduce the structural welds. Alternatively, different parts of the mounting plate 1-1 can also be welded or bolted together. In addition, the mounting plate 1-1 can be adaptively designed according to the shape of the air cylinder 3, and the width in the longitudinal direction Y is increased as much as possible.

[0060] In some embodiments, as Figure 8 shown, in the first rib plate 1-2, both the upper rib plate portion 1-21 and the lower rib plate portion 1-22 are plate members, and the first rib plate 1-2 can be a one-piece structure, for example, formed by bending. Alternatively, different parts of the first rib plate 1-2 can also be welded or bolted together.

[0061] In some embodiments, to improve the structural strength, as Figure 5 shown, a plurality of first rib plates 1-2 are arranged at intervals in the longitudinal direction Y in sequence, for example, 3.

[0062] In some embodiments, to improve the structural strength, as Figure 7 and Figure 8 shown, the air circuit control module mounting seat 1 further includes a second rib plate 1-3. The first rib plate 1-2 and the second rib plate 1-3 are respectively located on both sides of the mounting plate 1-1 in the transverse direction X, and the second rib plate 1-3 is welded to the first mounting seat vertical plate 1-111, the first mounting seat side plate 1-121, and the second mounting seat vertical plate 1-122. At this time, the second rib plate 1-3 is generally L-shaped, which can effectively increase the structural strength and stiffness of the air circuit control module mounting seat 1.

[0063] At this time, the air circuit control module 5 can be arranged on one side of the air circuit control module mounting seat 1 in the transverse direction, and the air cylinder 3 and the air circuit control module 5 are respectively arranged on both sides of the mounting plate 1-1 in the transverse direction X, so that the panel of the air circuit control module 5 can be fully exposed, facilitating the operation of the air circuit control module 5. At this time, the air circuit control module mounting seat 1 is in a cantilever structure relative to the air cylinder mounting frame 2. Since it is necessary to ensure that the air circuit control module 5 has a sufficiently large mounting area, the air circuit control module mounting seat 1 needs to extend to a lower position, resulting in a longer cantilever structure. Through the cooperation and strengthening of the first rib plate 1-2 and the second rib plate 1-3, and the clamping connection between the first rib plate 1-2 and the mounting plate 1-1, the modal of the air circuit control module mounting seat 1 can be effectively improved.

[0064] Further, in the air cylinder mounting frame 2, as Figure 4 and Figure 5 shown, there are a mounting beam 2-4, two end beams 2-6 and two cross beams 2-3. The two end beams 2-6 are respectively the first end beam 2-1 and the second end beam 2-2. Among them, the cross beam 2-3 is a beam body extending along the transverse direction X, and the end beams 2-6 and the mounting beam 2-4 are both longitudinal beams extending along the longitudinal direction Y. The mounting beam 2-4 and / or the end beam 2-6 can be used to connect the air cylinder 3. One or multiple mounting beams 2-4 can be set along the transverse direction X according to the number of air cylinders 3. For example, 2 are set. One longitudinal beam can connect one or multiple air cylinders 3. In addition, one air cylinder 3 can be simultaneously connected and lifted by one or multiple longitudinal beams.

[0065] In some embodiments, as Figure 5 and Figure 6 shown, the two end beams 2-6 are arranged in sequence along the transverse direction X, the two cross beams 2-3 are arranged in sequence along the longitudinal direction Y, and are located between the two end beams 2-6, and these four beam bodies form a rectangular outer frame. The two ends of the cross beam 2-3 are respectively inserted and welded into the two end beams 2-6. In addition, the mounting beam 2-4 is located between the two end beams 2-6 in the transverse direction X, and the two ends in the longitudinal direction Y are respectively inserted and welded into the two cross beams 2-3. At this time, the beam bodies are fixedly connected together by insertion and welding, and the entire mounting skeleton is mainly borne by the base material, which can effectively avoid the welds from bearing and improve the structural strength.

[0066] In some embodiments, as Figure 5 、 Figures 9 to 11As shown, the end beam 2-6 is a U-shaped beam. The concave surfaces of the two end beams 2-6 are arranged opposite to each other in the transverse direction X. At both ends of the concave surface of the end beam 2-6 in the longitudinal direction Y, there are respectively provided first groove portions 2-62, and in the middle is a second groove portion 2-63. The internal height of the first groove portion 2-62 is greater than the internal height of the second groove portion 2-63. In addition, the end of the cross beam 2-3 has a cross beam insertion plate 2-31. The cross beam insertion plate 2-31 is inserted and welded into the first groove portion 2-62, and abuts against the end surface of the second groove portion 2-63 in the longitudinal direction Y. At this time, the second groove portion 2-63 can be used to position and support the cross beam insertion plate 2-31 in the longitudinal direction Y. In addition, the cross beam 2-3 extending into the cross beam insertion plate 2-31 of the end beam 2-6 can serve as a reinforcing rib of the end beam 2-6, preventing the torsional deformation of the end beam 2-6 and reducing the separately provided reinforcing ribs.

[0067] Exemplarily, to realize the setting of the first groove portion 2-62 and the second groove portion 2-63, as Figure 9 shown, the end beam 2-6 includes an end beam top plate 2-61, an end beam vertical plate and an end beam bottom plate. The end beam top plate 2-61 and the end beam bottom plate are arranged on one side of the end beam vertical plate in the transverse direction X to form a U-shaped beam. The end beam bottom plate is a flat plate body, while the end beam top plate 2-61 includes an uneven structure, specifically including a top plate middle portion 2-611 and two top plate side portions 2-612 on both sides of the top plate middle portion 2-611 in the longitudinal direction Y. The two top plate side portions 2-612 are higher than the top plate middle portion 2-611. A first groove portion 2-62 is formed between the top plate side portion 2-612 and the end beam bottom plate, and a second groove portion 2-63 is formed between the top plate middle portion 2-611 and the end beam bottom plate. At this time, in the end beam top plate 2-61, the top plate side portion 2-612 and the top plate middle portion 2-611 are disconnected, and the cross beam insertion plate 2-31 abuts against the end surface of the top plate middle portion 2-611 in the longitudinal direction Y.

[0068] Among them, in the first end beam 2-1, the first top plate 2-11, the first vertical plate 2-12, and the first bottom plate 2-13 respectively correspond to the end beam top plate 2-61, the end beam vertical plate, and the end beam bottom plate of the end beam 2-6.

[0069] In some embodiments, as Figures 5 to 7As shown, the mounting beam 2-4 includes a mounting beam bottom plate 2-41 and two mounting beam vertical plates 2-42. The two mounting beam vertical plates 2-42 are fixed above the two ends of the mounting beam bottom plate 2-41 in the transverse direction X. At this time, the mounting beam 2-4 specifically forms a U-shaped beam with a concave surface facing upward. The two ends of the mounting beam vertical plates 2-42 extend relative to the mounting beam bottom plate 2-41 in the longitudinal direction Y to respectively form mounting beam insertion plates 2-421, and the mounting beam insertion plates 2-421 are inserted and welded inside the corresponding cross beam 2-3. Such a structural design of the mounting beam 2-4 can not only improve the vertical stiffness of the mounting beam 2-4, but also use the mounting beam insertion plates 2-421 extending into the cross beam 2-3 as the stiffeners of the cross beam 2-3 to prevent the torsional deformation of the cross beam 2-3 and reduce the separately provided stiffeners.

[0070] Exemplarily, as Figure 6 shown, a weight reduction hole 2-411 is further provided on the mounting beam bottom plate 2-41, which has a lightweight effect.

[0071] Exemplarily, since the mounting beam 2-4 has a mounting beam bottom plate 2-41, a relatively large width can be set, and multiple air cylinders 3 can share one mounting beam. For example, as Figure 3 shown, one mounting beam 2-4 is used to connect two air cylinders 3. Specifically, two air cylinders 3 are respectively connected on both sides of the weight reduction hole 2-411 in the transverse direction X, and can be specifically fixedly connected to the hanging seats 3-1 on the air cylinders 3.

[0072] Exemplarily, the mounting beam 2-4 is an integrally formed structure, for example, formed by upward turning and bending to ensure the structural strength. In addition, mounting beam stiffeners can be added at appropriate positions on the mounting beam 2-4.

[0073] In some embodiments, as Figure 5 shown, the cross beam 2-3 includes a cross beam top plate 2-32, a cross beam vertical plate 2-33, and a cross beam bottom plate 2-34 arranged in sequence from top to bottom to form a U-shaped beam type cross beam 2-3. The concave surfaces of the two cross beams 2-3 face each other in the longitudinal direction Y for the two ends of the mounting beam 2-4 to extend into the concave surfaces of the two cross beams 2-3 for fixed connection. Among them, the two ends of the cross beam vertical plate 2-33 extend out of the cross beam top plate 2-32 and the cross beam vertical plate 2-33 in the transverse direction X to respectively form cross beam insertion plates 2-31.

[0074] In some embodiments, as Figures 1 to 5 shown, the air cylinder mounting frame 2 further includes a layered plate 2-7 to serve as an upper pipe clamping seat. At this time, pipelines 4 are respectively arranged on the upper and lower sides of the layered plate 2-7 to realize the layered arrangement of the pipelines 4 and improve the space utilization rate. Among them, there are multiple pipelines 4, which can be used to connect the air cylinders 3 and the air circuit control module 5.

[0075] Exemplarily, as Figure 4As shown, the mounting beam 2-4 and the end beam 2-6 are both longitudinal beams, and the layered plate 2-7 is arranged above at least one longitudinal beam. Specifically, one layered plate 2-7 can be arranged on each longitudinal beam or on some of the longitudinal beams.

[0076] Exemplarily, as Figure 4 shown, the layered plate 33 includes an inverted U-shaped plate 2-71 with a concave surface facing downwards. The two free ends of the inverted U-shaped plate 2-71 are sequentially fixed to the top surfaces of the two ends of the longitudinal beam along the transverse direction X, or are respectively fixed to the top surfaces of two cross beams 2-3. Specifically, they can be welded or bolted. Among them, the welding can be specifically carried out by first inserting into the corresponding top surface and then welding. A through space for the pipeline 4 in the lower layer is formed between the inverted U-shaped plate 2-71 and the longitudinal beam.

[0077] Exemplarily, as Figure 4 shown, to ensure the supporting capacity, an intermediate reinforcement plate 2-72 is also arranged at the middle position of the inverted U-shaped plate 2-71 of the layered plate 33. Specifically, one or multiple intermediate reinforcement plates 2-72 can be arranged sequentially in the transverse direction X. The intermediate reinforcement plate 2-72 is fixed below the inverted U-shaped plate 2-71, and it is located between the two free ends of the inverted U-shaped plate 2-71. The bottom end of the intermediate reinforcement plate 2-72 supports and is fixed to the top surface of the longitudinal beam.

[0078] Exemplarily, as Figure 1 and Figure 3 shown, on the end beam top plate 2-61 of the end beam 2-6, the layered plate 2-7 is located in the middle of the middle part 2-611 of the top plate, and in the longitudinal direction Y, there is a gap between the layered plate 2-7 and the side part 2-612 of the top plate. This gap can be used for some pipelines in the lower layer to pass through, and can be positioned by the layered plate 2-7 and the side part 2-612 of the top plate that is higher than the middle part 2-611 of the top plate. In addition, the side part 2-612 of the top plate can be higher than the top surface of the cross beam 2-3 and the top surface of the mounting beam 2-4.

[0079] In some embodiments, the cylinder mounting bracket 2 is an aluminum alloy bracket, and other metal materials can also be selected according to needs.

[0080] In addition to the above-mentioned underbody air storage system installation skeleton, the present invention also provides an underbody air storage system. The underbody air storage system is applied to a vehicle, specifically a rail vehicle. This underbody air storage system includes an underbody air storage system installation skeleton. The underbody air storage system installation skeleton can specifically be the underbody air storage system installation skeleton provided in any of the above embodiments, and the beneficial effects can be correspondingly referred to the above respective embodiments.

[0081] As Figures 1 to 3 、 Figures 12 to 18 shown, in the underbody air storage system, there is also a cylinder 3 fixed to the cylinder mounting bracket 2, specifically fixed below the cylinder mounting bracket 2.

[0082] As Figure 12As shown, a hanger 3-1 is provided on the top of the air cylinder 3, and the hanger 3-1 is suspended and fixed to the air cylinder mounting frame 2. An annular reinforcing belt 3-2 is provided on the outer side of the air cylinder 3, and a part of the structure of the hanger 3-1 extends between the reinforcing belt 3-2 and the air cylinder 3, so that the hanger 3-1 is fixed to the air cylinder 3 through the reinforcing belt 3-2. At this time, the reinforcing belt 3-2 binds the hanger 3-1 to the air storage cylinder 3, which can ensure the reliability of the connection. At the same time, the use of the annular reinforcing belt 3-2 to fix the hanger 3-1 can make the air cylinder 3 evenly stressed, reducing the risk of deformation and damage to the body of the air cylinder 3.

[0083] It should be noted that the under-vehicle air storage system also includes a brake control device 6. In the horizontal direction X, the brake control device 6 and the air circuit control module 5 are respectively located on both sides of the mounting frame, and the brake control device 6, the air circuit control module 5 and the air cylinder 3 are matched. In terms of size selection and design, the size of the mounting frame can be matched with the size of the brake control device 6. For example, in the longitudinal direction Y, the length of the brake control device 6, the spacing between the two crossbeams 2-3 in the longitudinal direction Y, and the length of the air cylinder 3 can be the same or close. The longitudinal direction Y usually corresponds to the vehicle length direction. In addition, the air cylinder 3 is generally a cylindrical structure, and the diameter of the air cylinder 3 can be selected according to the available space in the equipment compartment and the required volume of the air cylinder 3.

[0084] In some embodiments, a plurality of air cylinders 3 are provided and arranged in sequence in the transverse direction X. The axial direction of the air cylinder 3 may extend along the longitudinal direction Y. For example, Figure 1 As shown, three air cylinders 3 are provided, namely a brake air cylinder, a main air cylinder, and an auxiliary air cylinder.

[0085] In some embodiments, in order to meet the requirements of lightweight, the air cylinder 3 is a carbon fiber air cylinder. Specifically, the carbon fiber air cylinder includes an outer layer 3-3 and an inner liner 3-4 arranged in the outer layer 3-3. The outer layer 3-3 is a carbon fiber outer layer, and the inner liner 3-4 can be a HDPE (high-density polyethylene) inner liner. In addition, the suspension seat 3-1 is a carbon fiber seat or a stainless steel seat, and the reinforcement belt 3-2 is a carbon fiber belt.

[0086] In some embodiments, the reinforcement belt 3 - 2 is wrapped around the outside of the air cylinder 3 , specifically, it can be wrapped around one circle or multiple circles.

[0087] In some embodiments, Figure 12 and Figure 13 As shown, the hanger 3-1 includes a connecting plate 3-11 and a lifting ear 3-12 fixed to the connecting plate 3-11. The connecting plate 3-11 is attached to the outer surface of the air cylinder 3, and can be a curved plate adapted to the outer peripheral shape of the air cylinder 3. The reinforcing belt 3-2 binds the connecting plate 3-11 to the air cylinder 3. The lifting ear 3-12 is used to fix the air cylinder mounting frame 2.

[0088] In some embodiments, the suspension seat 3-1 is fixed to the air cylinder mounting bracket 2 by a T-shaped threaded fastener 2-8. During installation, the T-shaped threaded fastener 2-8 is inverted and installed through the suspension seat 3-1 and the air cylinder mounting bracket 2 from bottom to top. The air cylinder 3 is convenient to install and disassemble. When the air cylinder 3 needs to be repaired, it is not necessary to disassemble the air cylinder mounting bracket 2, which is convenient for off-vehicle maintenance of the air cylinder 3.

[0089] In some embodiments, in the circumferential direction of the air cylinder 3, a plurality of suspension seats 3-1 are sequentially arranged on the air cylinder 3, for example, two. As Figure 12 and 13 shown, in the axial direction of the air cylinder 3, the middle part of the connecting plate 3-11 is fixedly provided with a lifting lug 3-12, specifically, two lifting lugs 3-12 can be connected; both ends of the connecting plate 3-11 are respectively fixed to the air cylinder 3 through two reinforcing belts 3-2.

[0090] In addition, the suspension seat 3-1 further includes a reinforcing plate 3-13 fixed between the connecting plate 3-11 and the lifting lug 3-12. Specifically, a plurality of reinforcing plates 3-13 can be provided, which can effectively increase the structural strength and stiffness. At this time, the axial direction of the air cylinder 3 can be parallel to the longitudinal direction Y.

[0091] Or, in other embodiments, as Figure 14 shown, in the suspension seat 3-1, it also includes a connecting plate 3-11 and a lifting lug 3-12. And, in the axial direction of the air cylinder 3, the lifting lug 3-12 is fixed to one end of the connecting plate 3-11, and a baffle 3-14 is further fixed to the other end of the connecting plate 3-11. The reinforcing belt 3-2 is connected between the baffle 3-14 and the lifting lug 3-12, and specifically, one reinforcing belt 3-2 can be used. At this time, the suspension seat 3-1 is a U-shaped plate and can be an integrally formed structure. For example, the lifting lug 3-12, the connecting plate 3-11 and the baffle 3-14 can be bent and formed by a single plate member. In addition, during assembly, the axial direction of the air cylinder 3 can correspond to the up and down direction, and only one suspension seat 3-1 can be provided and arranged at a position close to the top of the air cylinder 3 for connecting the air cylinder 3 mounting seat.

[0092] Furthermore, a drain seat is also provided at the bottom of the air cylinder 3. Since the air compressed by the air compressor is stored in the air cylinder 3, and the compressed air contains water vapor, condensed water is formed in the air cylinder 3 and stored at the bottom of the air cylinder 3. By providing a drain seat, the drainage of the air cylinder 3 can be realized, and specifically, it can be drained regularly to avoid corrosion of the braking elements in the air cylinder 3.

[0093] It should be noted that for the drain seat of the traditional aluminum alloy air cylinder 3, its top extends into and protrudes from the inner bottom surface of the air cylinder 3 and is then ground flat after welding to ensure that the accumulated water can be completely drained. However, for a carbon fiber air cylinder, its inner liner 3-4 is usually formed by rotational molding or blow molding processes. Due to process and material limitations, the drain seat cannot be processed in the above traditional manner, and the protruding part will affect the drainage of the accumulated water. By setting the outwardly convex drain seat 3-5 or the pipe-leading drain seat 3-6 described below, it can be adapted to the carbon fiber air cylinder to ensure the drainage of the accumulated water; of course, according to requirements, it can also be applied to air cylinders 3 made of other materials.

[0094] In some embodiments, the drain seat is set as the outwardly convex drain seat 3-5. As Figure 15 shown, the air cylinder 3 includes an outer layer 3-3 and an inner liner 3-4 provided in the outer layer 3-3, and the outer layer 3-3 is specifically a carbon fiber outer layer. The bottom of the inner liner 3-4 has a downwardly convex mounting portion 3-41, and the top of the outwardly convex drain seat 3-5 is embedded in the mounting portion 3-41, that is, in the wall surface of the mounting portion 3-41. The bottom of the outwardly convex drain seat 3-5 protrudes downward from the outer surface of the air cylinder 3.

[0095] Specifically, the outwardly convex drain seat 3-5 is embedded in the inner liner 3-4 by rotational molding. The outer layer 3-3 formed by winding the carbon fiber outer layer on the outside of the inner liner 3-4 can enhance the connection between the outwardly convex drain seat 3-5 and the inner liner 3-4 to improve airtightness and effectively solve the drainage problem.

[0096] In some other embodiments, the drain seat is set as the pipe-leading drain seat 3-6. As Figures 16 to 17 shown, the pipe-leading drain seat 3-6 includes a drain pipe 3-61 and a drain cock 3-62. The drain pipe 3-61 is provided in the inner cavity of the air cylinder 3. The inlet of the drain pipe 3-61 faces the lowest point inside the air cylinder 3. The outlet of the drain pipe 3-61 is connected to the drain cock 3-62, and the drain cock 3-62 passes through and is fixed to the air cylinder 3. When draining water is required, the drain cock 3-62 is opened. Since the internal pressure of the air cylinder 3 is usually greater than the atmospheric pressure, under the action of the air pressure, the accumulated water in the air cylinder 3 can be pressed into the inlet of the drain pipe 3-61 and discharged through the drain pipe 3-61 and the drain cock 3-62.

[0097] Specifically, the drain cock 3-62 is arranged on one side in the circumferential direction of the drain pipe 3-61. For example, it is at a position deviated by 30° from the lowest point of the inner bottom surface of the air cylinder 3.

[0098] Furthermore, as Figure 18As shown in the figure, to improve the service life of the air cylinder 3, an end strengthening protective layer 3-7 is further provided on the outer side of the air cylinder 3. Specifically, the end strengthening protective layer 3-7 can be provided at both ends of the air cylinder 3 in the axial direction to protect against dropping during transportation and installation of the air cylinder 3. Optionally, the end strengthening protective layer 3-7 is an EPP (Expanded polypropylene) foam protective layer, which can be sprayed on the outer side of the air cylinder 3 and can minimize weight gain.

[0099] In addition, a fireproof layer and / or a light-proof layer are also provided on the outer side of the air cylinder 3. Specifically, a layer of dark and light-impermeable fireproof paint can be provided to form a fireproof and light-proof coating 3-8. At this time, the air cylinder 3 mainly includes an inner tank 3-4, an outer layer 3-3 made of carbon fiber, a fireproof and light-proof coating 3-8, and an end strengthening protective layer 3-7 from the inside to the outside. Since the resin material of the carbon fiber air cylinder is afraid of light and fire, by providing the fireproof and light-proof coating 3-8, the fireproof and light-proof effects of the carbon fiber air cylinder can be effectively achieved, and the service life of the carbon fiber air cylinder can be extended.

[0100] It should be noted that when an element is referred to as "fixed" to another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be intermediate elements at the same time. In addition, in the description of the present invention, unless otherwise specified, the meanings of "multiple", "multiple roots", and "multiple groups" are two or more.

[0101] The orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features.

[0102] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0103] The various embodiments in this specification are described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other.

[0104] The above has introduced in detail the underbody air storage system installation framework and the underbody air storage system provided by the present invention. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can still be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. An installation skeleton of an under-vehicle air storage system, characterized in that, It includes an air cylinder mounting bracket (2) and a pneumatic circuit control module mounting base (1); One end of the air cylinder mounting bracket (2) in the transverse direction (X) is a first end beam (2-1); The pneumatic circuit control module mounting base (1) includes a mounting plate (1-1) and a first rib plate (1-2) arranged in sequence in the transverse direction (X). The mounting plate (1-1) includes an upper mounting plate part (1-11) and a lower mounting plate part (1-12) arranged successively from top to bottom. The first rib plate (1-2) includes an upper rib plate part (1-21) and a lower rib plate part (1-22) arranged successively from top to bottom. The upper mounting plate part (1-11) and the upper rib plate part (1-21) are welded to two opposite vertical surfaces of the first end beam (2-1) in the transverse direction (X), and the lower rib plate part (1-22) is welded to one side of the lower mounting plate part (1-12) in the transverse direction (X).

2. The under-vehicle air storage system installation skeleton according to claim 1, wherein The first end beam (2-1) includes a first top plate (2-11), a first vertical plate (2-12) and a first bottom plate (2-13) arranged successively from top to bottom; the first top plate (2-11) and the first bottom plate (2-13) are fixed to the first side of the first vertical plate (2-12) in the transverse direction (X), and a notch (2-131) is provided on the first bottom plate (2-13); the upper rib plate part (1-21) extends upward through the notch (2-131) above the first vertical plate (2-12) and is welded to the first vertical plate (2-12) and the first top plate (2-11); the upper mounting plate part (1-11) is fixed to the second side of the first vertical plate (2-12) in the transverse direction (X).

3. The under-vehicle air storage system installation skeleton according to claim 1, characterized in that, The upper mounting plate part (1-11) includes a first mounting seat vertical plate (1-111); the lower mounting plate part (1-12) includes a first mounting seat side plate (1-121) and a second mounting seat vertical plate (1-122) arranged successively from top to bottom; one end of the first mounting seat side plate (1-121) in the transverse direction (X) is fixed to the bottom end of the first mounting seat side plate (1-121), and the other end is fixed to the top end of the second mounting seat vertical plate (1-122); in the transverse direction (X), part of the top surface of the lower rib plate part (1-22) is fixed below the upper rib plate part (1-21), and part of the top surface is also welded to the bottom surface of the first mounting seat side plate (1-121).

4. The under-vehicle air storage system installation skeleton according to any one of claims 1 to 3, characterized in that The air cylinder mounting bracket (2) includes a mounting beam (2-4), two end beams (2-6) and two cross beams (2-3). One of the two end beams (2-6) is the first end beam (2-1); the two end beams (2-6) are arranged in sequence in the transverse direction (X), and the two cross beams (2-3) are arranged in sequence in the longitudinal direction (Y); both ends of the cross beam (2-3) are inserted and welded into the two end beams (2-6) respectively; the mounting beam (2-4) is located between the two end beams (2-6) in the transverse direction (X), and both ends are inserted and welded into the two cross beams (2-3) respectively.

5. The under-vehicle air storage system installation framework according to claim 4, characterized in that, The end beam (2-6) is a U-shaped beam, and the concave surfaces of the two end beams (2-6) are arranged opposite to each other in the transverse direction (X); at both ends of the concave surface of the end beam (2-6) in the longitudinal direction (Y), there are respectively provided first groove portions (2-62), and in the middle is a second groove portion (2-63); the internal height of the first groove portion (2-62) is greater than the internal height of the second groove portion (2-63); the end of the cross beam (2-3) has a cross beam insertion plate (2-31); the cross beam insertion plate (2-31) is inserted and welded in the first groove portion (2-62), and abuts against the end face of the second groove portion (2-63) in the longitudinal direction (Y) along the longitudinal direction (Y).

6. The under-vehicle air storage system installation skeleton according to claim 4, characterized in that, The mounting beam (2-4) includes a mounting beam bottom plate (2-41) and two mounting beam vertical plates (2-42), the two mounting beam vertical plates (2-42) are fixed above both ends of the mounting beam bottom plate (2-41) in the transverse direction (X), and both ends of the mounting beam vertical plates (2-42) in the longitudinal direction (Y) extend relative to the mounting beam bottom plate (2-41) to respectively form mounting beam insertion plates (2-421), and the mounting beam insertion plates (2-421) are inserted and welded inside the corresponding cross beam (2-3).

7. The under-vehicle air storage system installation skeleton according to claim 4, characterized in that, The end beam (2-6) and the mounting beam (2-4) are both longitudinal beams; the air cylinder mounting frame (2) further includes a layered plate (2-7), and at least one layered plate (2-7) is provided above the longitudinal beam; the layered plate (2-7) includes an inverted U-shaped plate (2-71) with the concave surface facing down; the two free ends of the inverted U-shaped plate (2-71) are sequentially fixed to the top surfaces of both ends of the longitudinal beam in the transverse direction (X), or are respectively fixed to the top surfaces of the two cross beams (2-3).

8. An under-vehicle air storage system, characterized in that, It includes the undercarriage air storage system mounting skeleton according to any one of claims 1 to 7; it further includes an air cylinder (3) fixed to the air cylinder mounting frame (2); a hanging seat (3-1) is provided at the top of the air cylinder (3), the hanging seat (3-1) is hoisted and fixed to the air cylinder mounting frame (2), an annular reinforcing belt (3-2) is sleeved outside the air cylinder (3), and a part of the structure of the hanging seat (3-1) extends into the space between the reinforcing belt (3-2) and the air cylinder (3), so that the hanging seat (3-1) is fixed to the air cylinder (3) through the reinforcing belt (3-2).

9. The under-vehicle air storage system according to claim 8, characterized in that, A drain seat is further provided on the air cylinder (3). The drain seat is an outwardly convex drain seat (3-5), the air cylinder (3) includes an outer layer (3-3) and an inner bladder (3-4) provided in the outer layer (3-3), the bottom of the inner bladder (3-4) has a downwardly convex mounting portion (3-41), the top of the outwardly convex drain seat (3-5) is embedded in the mounting portion (3-41), and the bottom of the outwardly convex drain seat (3-5) protrudes downward from the outer surface of the air cylinder (3). And / or, the drain seat is a pipe-leading drain seat (3-6), and the pipe-leading drain seat (3-6) includes a drain pipe (3-61) and a drain cock (3-62). The drain pipe (3-61) is arranged in the inner cavity of the air cylinder (3), and the inlet of the drain pipe (3-61) faces the lowest part inside the air cylinder (3). The outlet of the drain pipe (3-61) is connected to the drain cock (3-62), and the drain cock (3-62) passes through and is fixed to the air cylinder (3).

10. The under-vehicle air storage system according to claim 8 or 9, characterized in that, A fireproof layer and / or a light-proof layer and / or an end strengthening protection layer (3-7) is arranged on the outer side of the air cylinder (3).