Lightweight thin-walled composite structure train air duct

Abstract

This utility model discloses a lightweight thin-walled composite structure train air duct, including a fixing assembly. The fixing assembly includes a fixing plate, and a protective plate is fixedly connected to the lower end of the fixing plate. The fixing assembly also includes a support layer fixed between the fixing plate and the protective plate. Several support components are installed at equal intervals at the lower end of the protective plate. The support components include a fixing seat fixed to the lower end of the protective plate, and a mounting seat is installed at the lower end of the fixing seat. The support assembly also includes a support frame fixed to the lower end of the mounting seat. A support arch is fixed to the inner wall of the support frame. A ventilation duct is fixed to the inner wall of the support arch. The ventilation duct consists of a protective layer, a connecting layer, and an inner layer. The connecting layer is fixed to the inner wall of the protective layer, and the inner layer is fixed to the inner wall of the connecting layer. Several support rings are provided at equal intervals at the front and back on the inner wall of the inner layer. The outer wall of the support rings fits against the inner wall of the inner layer. This utility model has the advantages of lightweight, high reliability, and easy installation and replacement.

Description

Technical Field

[0001] This utility model relates to the field of train ventilation technology, specifically a lightweight thin-walled composite structure train ventilation duct. Background Technology

[0002] In the field of rail transit, train ventilation ducts, as core components for carriage ventilation, temperature regulation and air circulation, directly affect the comfort of train passengers. As the rail transit industry develops towards high speed, energy saving and greening, overall lightweighting of trains has become one of the core technology upgrade directions.

[0003] To meet basic structural strength requirements, ordinary air ducts often use thick metal plates (such as cold-rolled steel plates) or high-density plastics, resulting in an excessively high weight ratio of the air duct itself. During train operation, under complex conditions such as vibration and impact (such as low-frequency vibration caused by uneven tracks) and temperature fluctuations, structural cracking and loosening of joints are likely to occur, requiring frequent maintenance and replacement. Due to the large size and heavy weight of ordinary heavy air ducts, more manpower and hoisting equipment are required during installation, increasing the construction period and installation costs, and raising the maintenance costs throughout the train's life cycle. Utility Model Content

[0004] The purpose of this invention is to provide a lightweight thin-walled composite structure for train ventilation ducts, which has the advantages of being lightweight, highly reliable, and easy to install and replace. It solves the problems of excessive overall weight of ventilation ducts leading to increased energy consumption and high installation and maintenance costs in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A lightweight thin-walled composite structure train air duct includes a fixing component, which includes a fixing plate. A protective plate is fixedly connected to the lower end of the fixing plate. The fixing component also includes a support layer fixed between the fixing plate and the protective plate. Several support components are installed at equal intervals at the lower end of the protective plate. The support components include a fixing seat fixed to the lower end of the protective plate. A mounting seat is installed at the lower end of the fixing seat. The support components also include a support frame fixed to the lower end of the mounting seat. A support arch is fixed to the inner wall of the support frame. A ventilation duct is fixed to the inner wall of the support arch. The ventilation duct consists of a protective layer, a connecting layer, and an inner layer. A connecting layer is fixed to the inner wall of the protective layer. An inner layer is fixed to the inner wall of the connecting layer. Several support rings are provided at equal intervals at the inner wall of the inner layer. The outer walls of the support rings are attached to the inner wall of the inner layer. Several reinforcing ribs are fixed to the support rings at equal intervals around the inner layer. The outer walls of the reinforcing ribs are attached to the inner wall of the inner layer.

[0007] Preferably, the support layer is honeycomb mesh, and the upper and lower ends of the support layer are fixed to the ends of the fixing plate and the protective plate that are close to each other.

[0008] It is worth noting that the honeycomb mesh structure of the support layer not only significantly reduces the overall weight of the fixing components, but also significantly improves the connection strength and deformation resistance between the fixing plate and the protective plate through the distributed support effect of the honeycomb grid. The upper and lower ends are fixed to the fixing plate and the protective plate respectively, which can evenly transfer the external force to the entire support layer and avoid local stress concentration. This not only meets the requirements of lightweight device, but also ensures the high reliability of the fixing components.

[0009] Preferably, a stud is fixedly connected to the lower center of the fixing base, and mounting holes are opened through the centers of the upper and lower ends of the mounting base. The inner wall of the mounting hole fits the outer wall of the stud, and a nut is threaded onto the outer wall of the stud. The upper end of the nut fits the lower end of the mounting base.

[0010] It is worth noting that the stud at the lower end of the fixing base can pass through the mounting hole of the mounting base, and the nut can be tightened and fitted to the lower end of the mounting base to achieve a quick connection between the fixing base and the mounting base. This structure does not require complicated disassembly and assembly tools, and the installation and disassembly of the support component can be completed simply by tightening or loosening the nut.

[0011] Preferably, a bearing plate is fixed to the inner wall of the left and right ends of the fixed base. The upper end of the bearing plate is attached to the lower end of the mounting base. A slot is opened through the lower end of the bearing plate. Symmetrical screw holes are opened through the lower edge of the mounting base. Bolts are provided in the slots. The bolts pass through the slots and are threaded into the screw holes.

[0012] It is worth noting that the bearing plates at both ends of the fixed seat can provide auxiliary support to the mounting seat from below, enhancing the load-bearing stability after the two are connected; the bolts pass through the slots in the bearing plates and are threaded into the screw holes in the mounting seat, which can further strengthen the connection between the fixed seat and the mounting seat and prevent them from loosening during train operation.

[0013] Preferably, the lower end of the ventilation duct has several ventilation openings that are equidistant from front to back, and each ventilation opening is fixedly connected to a ventilation pipe.

[0014] It is worth noting that the ventilation opening at the lower end of the ventilation duct provides a channel for airflow output. The ventilation pipe is fixed inside the ventilation opening and can guide the airflow to a designated area inside the train to ensure uniform ventilation inside the train. At the same time, the ventilation pipe can reinforce the edge of the ventilation opening, preventing the ventilation duct from being easily deformed or damaged due to its thin-walled structure. While ensuring the ventilation function, it also improves the structural reliability of the ventilation duct.

[0015] Preferably, the cross-section of the ventilation duct is U-shaped, and the cross-section of the connecting layer is corrugated.

[0016] It is worth noting that the ventilation duct has a U-shaped cross-section, which ensures sufficient cross-sectional strength. The connecting layer adopts a corrugated structure. While maintaining lightweight, the corrugated shape disperses the stress generated by external pressure and vibration, which greatly improves the impact resistance and toughness of the ventilation duct and avoids the problem of thin-walled structures being easily damaged. At the same time, the corrugated structure can also enhance the connection stability between the protective layer and the inner layer, and improve the overall reliability of the ventilation duct.

[0017] Preferably, the outer walls of both the support ring and the reinforcing rib are arc-shaped.

[0018] It is worth noting that the outer walls of the support ring and the reinforcing rib are arc-shaped, which can fit tightly with the inner wall of the inner layer, reducing the wind resistance generated by the support ring and the reinforcing rib in the ventilation duct. The smooth transition can also reduce the wind noise generated during ventilation in the ventilation duct.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] This utility model provides a stable installation foundation for the entire device through a fixing plate, and the protective plate at its lower end can protect the internal structure. The support layer between the two is one of the core components for achieving lightweight design, while ensuring the structural strength of the fixing components. The support components at the lower end of the protective plate are connected by the cooperation of the fixing seat and the mounting seat, so that the support frame and the support arch can stably support the ventilation duct. The support arch fits against the outer wall of the ventilation duct, which can distribute the stress on the ventilation duct and improve the reliability of the support. The ventilation duct adopts a composite thin-walled structure of protective layer, connecting layer and inner layer, which reduces the overall weight while ensuring strength. The support ring is distributed along the front and back of the ventilation duct to enhance the radial support force of the inner layer. The reinforcing rib surrounds the inner layer and connects to the support ring, which can further improve the circumferential strength of the inner layer. The combination of the two can effectively prevent the inner wall of the ventilation duct from collapsing or deforming under the impact of airflow or the bumps of a train. Attached Figure Description

[0021] Figure 1 This is an isometric view of the overall structure of this utility model;

[0022] Figure 2 This is a three-dimensional structural breakdown diagram of the fixing component of this utility model;

[0023] Figure 3 This is a three-dimensional structural disassembly diagram of the support component of this utility model;

[0024] Figure 4 This is a three-dimensional structural diagram of the ventilation duct of this utility model.

[0025] Figure 5 This is a front view of the support assembly and ventilation duct of this utility model.

[0026] Reference numerals: 101, fixing plate; 102, protective plate; 103, supporting layer; 201, fixing seat; 202, bearing plate; 203, stud; 204, slot; 205, mounting seat; 206, mounting hole; 207, nut; 208, screw hole; 209, support frame; 210, supporting arch; 211, bolt; 3, ventilation duct; 301, protective layer; 302, connecting layer; 303, inner layer; 4, ventilation opening; 5, ventilation pipe; 601, supporting ring; 602, reinforcing rib. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] To address the issues of excessive overall weight of the ductwork leading to increased energy consumption and high installation and maintenance costs in existing technologies, the following technical solution is proposed. Please refer to [link / reference]. Figures 1-5 ;

[0029] A lightweight thin-walled composite structure train air duct includes a fixing assembly. The fixing assembly includes a fixing plate 101, with a protective plate 102 fixedly connected to the lower end of the fixing plate 101. The fixing assembly also includes a support layer 103 fixed between the fixing plate 101 and the protective plate 102. Several support components are installed at equal intervals at the lower end of the protective plate 102. Each support component includes a fixing seat 201 fixed to the lower end of the protective plate 102, with a mounting seat 205 installed at the lower end of the fixing seat 201. The support assembly also includes a support frame 209 fixed to the lower end of the mounting seat 205. The inner... A supporting arch 210 is fixedly connected to the wall. A ventilation duct 3 is fixedly connected to the inner wall of the supporting arch 210. The ventilation duct 3 is composed of a protective layer 301, a connecting layer 302, and an inner layer 303. The connecting layer 302 is fixedly connected to the inner wall of the protective layer 301. The inner layer 303 is fixedly connected to the inner wall of the connecting layer 302. The inner wall of the inner layer 303 is provided with several supporting rings 601 at equal intervals. The outer wall of the supporting rings 601 is attached to the inner wall of the inner layer 303. Several reinforcing ribs 602 that are equidistantly connected around the inner layer 303 are fixedly connected to the supporting rings 601. The outer wall of the reinforcing ribs 602 is attached to the inner wall of the inner layer 303.

[0030] The fixing plate 101 provides a stable installation foundation for the entire device, and the protective plate 102 at its lower end protects the internal structure. The support layer 103 between the two is one of the core components for achieving lightweight design, while also ensuring the structural strength of the fixing components. The support components at the lower end of the protective plate 102 are connected to the mounting base 205 through the cooperation of the fixing seat 201, so that the support frame 209 and the support arch 210 can stably support the ventilation duct 3. The support arch 210 fits against the outer wall of the ventilation duct 3, which can distribute the stress on the ventilation duct 3 and improve the reliability of the support. The ventilation duct 3 adopts a protective layer 301 and a connecting layer 302. The composite thin-walled structure of the inner layer 303 reduces overall weight while ensuring strength. The support ring 601, distributed along the front and back of the ventilation duct 3, enhances the radial support force of the inner layer 303. The reinforcing rib 602 surrounds the inner layer 303 and connects to the support ring 601, further improving the circumferential strength of the inner layer 303. The combination of the two can effectively prevent the inner wall of the ventilation duct 3 from collapsing or deforming due to airflow impact or train bumps. The connection design between the components facilitates subsequent installation and replacement. Through the synergistic effect between the parts, the overall structure achieves both lightweighting to reduce energy consumption and ensuring high reliability while reducing maintenance costs.

[0031] Please see Figure 2 The support layer 103 is honeycomb mesh, and its upper and lower ends are fixed to the ends of the fixing plate 101 and the protective plate 102 that are close to each other. Through the honeycomb mesh structure of the support layer 103, the overall weight of the fixing component is greatly reduced, while the distributed support effect of the honeycomb grid significantly improves the connection strength and deformation resistance between the fixing plate 101 and the protective plate 102. Its upper and lower ends are fixed to the fixing plate 101 and the protective plate 102 respectively, which can evenly transfer the external force to the entire support layer 103, avoid local stress concentration, meet the requirements of lightweight device, and ensure the high reliability of the fixing component.

[0032] Please see Figure 3 A stud 203 is fixedly connected to the lower center of the fixed base 201. Mounting base 205 has mounting holes 206 through the centers of its upper and lower ends. The inner wall of the mounting hole 206 fits against the outer wall of the stud 203. A nut 207 is threaded onto the outer wall of the stud 203. The upper end of the nut 207 fits against the lower end of the mounting base 205. The stud 203 at the lower end of the fixed base 201 can pass through the mounting hole 206 of the mounting base 205. The nut 207 is tightened by thread and fits against the lower end of the mounting base 205, realizing a quick connection between the fixed base 201 and the mounting base 205. This structure does not require complicated disassembly and assembly tools. The installation and disassembly of the support component can be completed simply by tightening or loosening the nut 207.

[0033] The inner walls of the left and right ends of the fixed base 201 are fixed with bearing plates 202. The upper end of the bearing plate 202 is attached to the lower end of the mounting base 205. The lower end of the bearing plate 202 has a through slot 204. The lower edge of the mounting base 205 has symmetrical screw holes 208. Bolts 211 are installed in the slot 204. The bolts 211 pass through the slot 204 and are threaded into the screw holes 208. The bearing plates 202 at the left and right ends of the fixed base 201 can provide auxiliary support for the mounting base 205 from below, enhancing the load-bearing stability after the two are connected. The bolts 211 pass through the slot 204 of the bearing plate 202 and are threaded into the screw holes 208 of the mounting base 205, which can further strengthen the connection between the fixed base 201 and the mounting base 205 and prevent them from loosening during train operation.

[0034] Please see Figure 4 and Figure 5 The lower end of the ventilation duct 3 has several equidistant ventilation openings 4, and ventilation pipes 5 are fixedly connected to each ventilation opening 4. The ventilation openings 4 at the lower end of the ventilation duct 3 provide a channel for airflow output. The ventilation pipes 5 fixedly connected to the ventilation openings 4 can guide the airflow to a designated area inside the train to ensure uniform ventilation inside the train. At the same time, the ventilation pipes 5 can reinforce the edges of the ventilation openings 4 to prevent the ventilation duct 3 from being easily deformed or damaged due to its thin-walled structure. While ensuring the ventilation function, the structural reliability of the ventilation duct 3 is improved.

[0035] The cross-section of the ventilation duct 3 is U-shaped, and the cross-section of the connecting layer 302 is corrugated. The U-shaped cross-section of the ventilation duct 3 ensures sufficient cross-sectional strength. The corrugated structure of the connecting layer 302 disperses the stress generated by external pressure and vibration through the corrugated shape while maintaining lightweight, which greatly improves the impact resistance and toughness of the ventilation duct 3 and avoids the problem of easy damage to thin-walled structures. At the same time, the corrugated structure can also enhance the connection stability between the protective layer 301 and the inner layer 303, and improve the overall reliability of the ventilation duct 3.

[0036] The outer walls of the support ring 601 and the reinforcing rib 602 are both arc-shaped. The arc-shaped outer walls of the support ring 601 and the reinforcing rib 602 can fit tightly with the inner wall of the inner layer 303, reducing the wind resistance generated by the support ring 601 and the reinforcing rib 602 in the ventilation duct 3. The smooth transition can also reduce the wind noise generated during ventilation in the ventilation duct 3.

[0037] Working principle: Foundation fixing and protection: The device is installed at the designated position on the train by the fixing plate 101, providing a stable foundation; the protective plate 102 isolates external dust and vibration, and the honeycomb mesh support layer 103 between it and the fixing plate 101 evenly transmits external force while reducing weight, avoiding local stress concentration and ensuring the strength of the fixing components.

[0038] Support component load-bearing reinforcement: The stud 203 of the fixed seat 201 passes through the mounting hole 206 of the mounting seat 205 and is tightened by the nut 207 to achieve initial connection; the bearing plate 202 supports the mounting seat 205 from below, and is reinforced by bolts 211 passing through the slot 204 and screwed into the screw hole 208 to prevent loosening due to bumps; finally, the ventilation duct 3 is supported by the support frame 209 and the support arch 210, and the support arch 210 fits against the outer wall of the ventilation duct 3 to distribute the force.

[0039] Airflow delivery and structural protection: After the airflow enters the ventilation duct 3, the U-shaped cross section ensures the flow space, and the protective layer 301 protects the outer layer; the corrugated connecting layer 302 disperses vibration stress and enhances the connection stability with the inner layer 303; the support ring 601 and the reinforcing rib 602 fit the inner layer 303 with the arc surface to prevent it from deforming under the impact of airflow, while reducing wind resistance and wind noise.

[0040] Directional ventilation guarantee: Airflow enters the ventilation pipe 5 through the ventilation opening 4 at the lower end of the ventilation duct 3, and is then directionally guided to the designated area inside the vehicle by the ventilation pipe 5 to ensure uniform ventilation; at the same time, the ventilation pipe 5 reinforces the edge of the ventilation opening 4 to prevent the thin-walled ventilation duct 3 from deforming or breaking at this point, thus ensuring the ventilation function and structural reliability.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A lightweight thin-walled composite structure train duct comprising a fixed assembly, characterized in that, The fixing assembly includes a fixing plate (101), a protective plate (102) fixedly connected to the lower end of the fixing plate (101), and a support layer (103) fixedly connected between the fixing plate (101) and the protective plate (102). Several support components are installed at equal intervals at the lower end of the protective plate (102). Each support component includes a fixing seat (201) fixedly connected to the lower end of the protective plate (102), a mounting seat (205) installed at the lower end of the fixing seat (201), and a support frame (209) fixedly connected to the lower end of the mounting seat (205). A support arch (210) is fixedly connected to the inner wall of the support frame (209). (210) has a ventilation channel (3) fixedly connected to its inner wall. The ventilation channel (3) is composed of a protective layer (301), a connecting layer (302) and an inner layer (303). The inner wall of the protective layer (301) is fixedly connected to the connecting layer (302). The inner wall of the connecting layer (302) is fixedly connected to the inner layer (303). The inner wall of the inner layer (303) is provided with several support rings (601) at equal intervals. The outer wall of the support rings (601) is attached to the inner wall of the inner layer (303). Several reinforcing ribs (602) are fixedly connected to the support rings (601) at equal intervals around the inner layer (303). The outer wall of the reinforcing ribs (602) is attached to the inner wall of the inner layer (303).

2. The lightweight thin-walled composite structural train duct of claim 1, wherein, The support layer (103) is honeycomb mesh, and the upper and lower ends of the support layer (103) are fixed to the ends of the fixing plate (101) and the protective plate (102) that are close to each other.

3. The lightweight thin-walled composite structural train duct of claim 1, wherein, A stud (203) is fixedly connected to the center of the lower end of the fixed base (201). A mounting hole (206) is opened through the center of the upper and lower ends of the mounting base (205). The inner wall of the mounting hole (206) fits against the outer wall of the stud (203). A nut (207) is threaded onto the outer wall of the stud (203). The upper end of the nut (207) fits against the lower end of the mounting base (205).

4. The lightweight thin-walled composite structural train duct of claim 3, wherein, The inner walls of the left and right ends of the fixed base (201) are fixed with a bearing plate (202). The upper end of the bearing plate (202) is attached to the lower end of the mounting base (205). The lower end of the bearing plate (202) is provided with a slot (204). The lower edge of the mounting base (205) is provided with symmetrical screw holes (208). The slot (204) is provided with a bolt (211). The bolt (211) passes through the slot (204) and is threaded into the screw hole (208).

5. The lightweight thin-walled composite structure train air duct according to claim 1, characterized in that, The lower end of the ventilation duct (3) has several ventilation openings (4) that are equidistant from front to back, and ventilation pipes (5) are fixedly connected inside each ventilation opening (4).

6. The lightweight thin-walled composite structural train duct of claim 1, wherein, The cross-section of the ventilation duct (3) is U-shaped, and the cross-section of the connecting layer (302) is corrugated.

7. The lightweight thin-walled composite structural train duct of claim 1, wherein, The outer walls of both the support ring (601) and the reinforcing rib (602) are arc-shaped.

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