A folding mechanism, a vehicle equipment compartment and a railway vehicle

Abstract

The application discloses a folding mechanism, a vehicle equipment cabin and a railway vehicle, and relates to the technical field of rail transit. The folding mechanism comprises a mounting seat and a rotating shaft. The mounting seat is used for being fixed to the inner wall of a mounting beam, and the mounting seat is provided with a groove. One end of the rotating shaft is used for being connected to the inner wall of a skirt plate, and the other end of the rotating shaft is provided with a protrusion. The protrusion is detachably embedded in the groove, so that the rotating shaft and the mounting seat are located in a closed cavity formed by the skirt plate and the mounting beam when the skirt plate is in a closed state. The folding mechanism solves the problems of affecting the external smoothness of the equipment cabin, being easily hit by sand and gravel and being inconvenient to disassemble caused by the external traditional folding mechanism.

Description

Technical Field

[0001] This application relates to the field of rail transit technology, and in particular to a folding mechanism, a vehicle equipment compartment, and a rail vehicle. Background Technology

[0002] With the continuous increase in the operating speed of high-speed trains, the equipment compartment skirt, as an important protective and aerodynamic component of the lower part of the car body, places higher demands on the aerodynamic performance, operating energy consumption, and noise control of the entire vehicle in terms of its aerodynamic shape and surface smoothness. Currently, the equipment compartment skirt and the car body mounting beam generally adopt a conventional external hinged structure to achieve the opening and closing function. This structure, with the hinge exposed on the outside of the skirt, has the following shortcomings:

[0003] Firstly, the external pivot causes local bulges on the outer surface of the skirt, which disrupts the streamlined transition between the equipment compartment and the vehicle body, resulting in a decrease in the smoothness of the appearance and may cause local airflow separation, increasing aerodynamic drag and noise.

[0004] Secondly, the shaft and fasteners are exposed in the complex operating environment under the vehicle, making them extremely susceptible to impacts from high-speed objects such as sand, gravel, and ballast, which can lead to shaft wear, corrosion, or even breakage, reducing service life and increasing maintenance costs.

[0005] Third, the external hinge structure requires installation points to be arranged on the outside of the vehicle body and skirt panel. Due to space limitations, the disassembly and assembly work requires the cooperation of many people. The operating space is small, and the tools are prone to interference with the vehicle body or nearby equipment, resulting in inconvenient disassembly and assembly, low maintenance efficiency, and high labor intensity.

[0006] Therefore, there is an urgent need for a new type of equipment cabin skirt folding mechanism that can solve the above problems and meet the higher speed level operation requirements of high-speed trains. Utility Model Content

[0007] The purpose of this application is to provide a folding mechanism, a vehicle equipment compartment, and a rail vehicle, which solves the problems caused by the external placement of traditional folding mechanisms, such as affecting the external smoothness of the equipment compartment, susceptibility to sand and gravel impacts, and inconvenience in disassembly.

[0008] To achieve the above objectives, this application provides a folding mechanism, comprising:

[0009] Mounting base, used to fix to the inner wall of mounting beam, the mounting base is provided with groove;

[0010] The pivot has one end for connecting to the inner wall of the skirt panel, and the other end is provided with a protrusion. The protrusion is detachably fitted into the groove, so that when the skirt panel is closed, the pivot and the mounting base are both located in the closed cavity formed by the skirt panel and the mounting beam.

[0011] In some embodiments, the mounting base includes a first limiting portion and a second limiting portion, the first limiting portion and the second limiting portion being disposed on both sides of the groove along a first direction for forming the groove.

[0012] In some embodiments, the second limiting portion is arc-shaped, allowing the protrusion to slide into or out of the groove while closely abutting the inner arc surface of the second limiting portion.

[0013] In some embodiments, an elastic buckle is provided between the first limiting portion and the second limiting portion, the elastic buckle being used to lock the protrusion within the groove.

[0014] In some embodiments, the elastic buckle is a cantilever spring, one end of which is connected to the first limiting part, and the other end is provided with a locking boss protruding toward the second limiting part. The locking boss is used to engage with the slot on the outer peripheral surface of the protrusion.

[0015] In some embodiments, the mounting base is further provided with two baffles, which are respectively disposed on both sides of the groove along the second direction, for limiting the movement of the rotating shaft along the second direction.

[0016] In some embodiments, the rotating shaft is arc-shaped, has a plurality of spaced-apart hollow holes, and is a one-piece aluminum alloy structure.

[0017] In some embodiments, a reinforcing support is provided at the end of the pivot shaft away from the protrusion, and the reinforcing support is used to connect to the skirt panel by fasteners.

[0018] This application also provides a vehicle equipment compartment, including a skirt and a mounting beam, and further including a folding mechanism for connecting the skirt and the mounting beam, such as that described in any of the preceding claims.

[0019] This application also provides a rail vehicle including the aforementioned vehicle equipment compartment.

[0020] Compared to the aforementioned background technology, the folding mechanism provided in this application includes a mounting base and a rotating shaft. The mounting base is used to fix itself to the inner wall of the mounting beam and has a groove. One end of the rotating shaft is connected to the inner wall of the skirt panel, and the other end has a protrusion that is detachably fitted into the groove, so that when the skirt panel is closed, both the rotating shaft and the mounting base are located within a closed cavity formed by the skirt panel and the mounting beam.

[0021] The beneficial effects of this folding mechanism mainly include:

[0022] Firstly, after the skirt is closed, the pivot and mounting base are completely hidden in the closed cavity formed by the skirt and the mounting beam. There are no protrusions or visible fasteners on the outer surface of the skirt, and the bottom of the vehicle is continuously streamlined, which can significantly reduce aerodynamic drag and aerodynamic noise during high-speed operation and meet the stringent requirements of higher speed levels for smooth appearance.

[0023] Secondly, the core moving parts (shaft, groove, protrusion) are located inside a closed cavity and are no longer exposed to high-speed impact environments such as gravel, ballast, ice and snow under the vehicle. This fundamentally solves the problem of wear failure, corrosion and breakage caused by impacts to external hinges, improves service life and reduces maintenance costs.

[0024] Third, the protrusion and groove adopt an insert-locking structure, which can complete the installation / removal of the skirt without any tools; during maintenance, one person can pull the skirt down from the inside of the car to separate the protrusion and groove, which greatly reduces the disassembly and assembly time compared with the traditional external hinge, significantly reduces the train's downtime, and has high maintenance efficiency and low labor intensity. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the connection of the folding mechanism in an embodiment of this application.

[0027] in:

[0028] 10-Mounting base, 11-Groove, 12-First limiting part, 13-Second limiting part, 131-Inner arc surface, 14-Baffle plate;

[0029] 20-Spindle, 21-Protruding head, 22-Hollow hole, 23-Reinforcing support, 24-Fastener;

[0030] 30 - Installation beam;

[0031] 40 - Skirt board. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] It should be noted that the directional terms such as "upper end," "lower end," "left side," and "right side" mentioned below are defined based on the accompanying drawings in the instruction manual.

[0035] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the connection of the folding mechanism in an embodiment of this application.

[0036] The folding mechanism provided in this application embodiment includes a mounting base 10 and a rotating shaft 20.

[0037] Mounting base 10 is used to fix to the inner wall of mounting beam 30, and mounting base 10 is provided with groove 11; one end of rotating shaft 20 is used to connect to the inner wall of skirt plate 40, and the other end is provided with protrusion 21.

[0038] The protrusion 21 engages with the groove 11 to limit the movement of the rotating shaft 20. Specifically, the protrusion 21 is detachably fitted into the groove 11, so that when the skirt 40 is in the closed state, the rotating shaft 20 and the mounting seat 10 are both located in the closed cavity formed by the skirt 40 and the mounting beam 30.

[0039] The beneficial effects of this folding mechanism mainly include:

[0040] Firstly, after the skirt 40 is closed, the pivot 20 and the mounting seat 10 are completely hidden in the closed cavity formed by the skirt 40 and the mounting beam 30. The outer surface of the skirt 40 has no protrusions and no visible fasteners 24. The bottom of the vehicle is continuously streamlined, which can significantly reduce aerodynamic drag and aerodynamic noise during high-speed operation and meet the stringent requirements of higher speed levels for smooth appearance.

[0041] Secondly, the core moving parts (rotating shaft 20, groove 11, protrusion 21) are located inside a closed cavity and are no longer exposed to high-speed impact environments such as gravel, ballast, ice and snow under the vehicle. This fundamentally solves the problem of wear failure and corrosion breakage caused by impacts on external hinges, improves service life and reduces maintenance costs.

[0042] Third, the protrusion 21 and the groove 11 adopt an insert-locking structure, which can complete the installation / removal of the skirt 40 without any tools; during maintenance, one person can pull the skirt 40 down from the inside of the car to separate the protrusion 21 and the groove 11, which greatly reduces the disassembly and assembly time compared with the traditional external hinge, significantly reduces the train's downtime, and has high maintenance efficiency and low labor intensity.

[0043] In some embodiments, the mounting base 10 includes a first limiting portion 12 and a second limiting portion 13, which are respectively disposed on both sides of the groove 11 along a first direction to form the groove 11.

[0044] The so-called first direction refers to, for example Figure 1 As shown, the groove 11 is positioned on both the left and right sides. The first limiting part 12 and the second limiting part 13 are arranged opposite each other to form the groove 11 structure for accommodating the protrusion 21.

[0045] In some embodiments, the second limiting portion 13 is arc-shaped, for the protrusion 21 to slide into or out of the groove 11 in close contact with the inner arc surface 131 of the second limiting portion 13.

[0046] In this way, the second limiting part 13 is designed as an arc, and its inner arc surface 131 forms a cylindrical-surface conformal fit with the outer circle of the protrusion 21. When installing or removing the skirt 40, the protrusion 21 can slide into or out of the groove 11 tangentially along the inner arc surface 131, automatically aligning itself without visual alignment, avoiding rigid collisions, and improving the success rate of assembly on the first attempt. At the same time, the arc surface contact changes the original "end face impact" to "progressive line contact", reducing the friction pair area and theoretically reducing the insertion force. Disassembly and assembly can be completed by a single person by hand, completely eliminating the need for auxiliary tools such as rubber hammers, and achieving true tool-free quick disassembly.

[0047] In addition, the arc-shaped second limiting part 13 is equivalent to adding a "reinforcing arch" to the opening side of the groove 11. Its cross-sectional modulus is higher than that of the straight side. Under high-speed airflow negative pressure and vibration alternating load, the opening deformation is significantly reduced, preventing the protrusion 21 from accidentally falling out of the groove due to inlet expansion.

[0048] To ensure the stability and firmness of the connection between the protrusion 21 and the groove 11, an elastic buckle is provided between the first limiting part 12 and the second limiting part 13. The elastic buckle is used to lock the protrusion 21 in the groove 11.

[0049] In this embodiment, the elastic buckle is a cantilever spring. One end of the spring is connected to the first limiting part 12, and the other end is provided with a locking boss that protrudes toward the second limiting part 13. The locking boss is used to engage with the slot on the outer peripheral surface of the protrusion 21.

[0050] In this way, the cantilevered spring automatically rebounds the instant the protrusion 21 slides into its end point. The locking boss and the slot on the protrusion 21 form a bidirectional axial-radial limit, which can completely offset the high-frequency vibration and impact during train operation, achieving a "click" self-locking. No additional anti-loosening parts or inspections are required throughout the entire vehicle maintenance process, achieving a maintenance-free level. The locking / unlocking action can be completed simply by pressing the spring inward, without the need for tools to reach into the outer side of the car floor, ensuring that there are no exposed parts after the skirt 40 is closed, thus combining the advantages of a concealed appearance and quick-release by a single person.

[0051] It should be noted that the spring can provide a constant normal pressure of, for example, 20-30N. When the protrusion 21 or the groove 11 develops gaps due to long-term wear, the elastic deformation of the cantilever can automatically compensate, maintaining the locking force without decay and greatly improving the service life.

[0052] Of course, depending on actual needs, the spring and the first limiting part 12 can be integrally stamped, which can save the need for additional small parts such as pins, springs, and retaining rings.

[0053] In some embodiments, in addition to the self-locking structure described above, a magnetic attraction structure can also be used. For example, a first magnetic attracting member can be added to the outer peripheral surface of the protrusion 21, and a second magnetic attracting member can be provided in the groove 11. In this way, the magnetic attraction force of the first and second magnetic attracting members can also achieve the purpose of stable connection between the protrusion 21 and the groove 11. At the same time, during disassembly, only external force needs to be applied to overcome the magnetic attraction force of the first and second magnetic attracting members to remove the skirt plate 40.

[0054] In some embodiments, the mounting base 10 is further provided with two baffles 14, which are respectively disposed on both sides of the groove 11 along the second direction, for limiting the movement of the rotating shaft 20 along the second direction.

[0055] The so-called second direction refers to the direction perpendicular to the first direction, such as... Figure 1 As shown, this is the axial direction of the rotating shaft 20, or the front-to-back direction.

[0056] In some embodiments, the rotating shaft 20 is arc-shaped, and the rotating shaft 20 is provided with a plurality of spaced-apart hollow holes 22. The rotating shaft 20 is an integral aluminum alloy structure.

[0057] As can be seen, designing the entire pivot 20 as an arc shape facilitates the smooth rotation of the protrusion 21 of the pivot 20 into the groove 11, making it easier to install the skirt 40. At the same time, setting the hollow hole 22 on the pivot 20 also helps to reduce the overall weight and facilitates the routing of wires using the hollow hole 22.

[0058] In some embodiments, the end of the pivot 20 away from the protrusion 21 is provided with a reinforcing support 23, which is used to connect to the skirt 40 by fasteners 24.

[0059] The reinforcing support 23 can be integrated with the rotating shaft 20. The reinforcing support 23 can be fastened to the inner wall of the skirt plate 40 by fasteners 24 (such as bolts).

[0060] The vehicle equipment compartment provided in this application includes a skirt 40 and a mounting beam 30, and also includes a folding mechanism for connecting the skirt 40 and the mounting beam 30 as described in the above specific embodiments.

[0061] This application provides a rail vehicle including the aforementioned vehicle equipment compartment. Other parts of the rail vehicle can be described with reference to related technologies, and will not be elaborated upon herein.

[0062] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0063] The folding mechanism, vehicle equipment compartment, and rail vehicle provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the solution and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of this application.

Claims

1. A folding mechanism, characterized in that, include: Mounting base, used to fix to the inner wall of mounting beam, the mounting base is provided with groove; The pivot has one end for connecting to the inner wall of the skirt panel, and the other end is provided with a protrusion. The protrusion is detachably fitted into the groove, so that when the skirt panel is closed, the pivot and the mounting base are both located in the closed cavity formed by the skirt panel and the mounting beam.

2. The folding mechanism as described in claim 1, characterized in that, The mounting base includes a first limiting part and a second limiting part, which are disposed on both sides of the groove along a first direction to form the groove.

3. The folding mechanism as described in claim 2, characterized in that, The second limiting part is arc-shaped, which allows the protrusion to slide into or out of the groove closely against the inner arc surface of the second limiting part.

4. The folding mechanism as described in claim 2, characterized in that, An elastic buckle is provided between the first limiting part and the second limiting part, and the elastic buckle is used to lock the protrusion in the groove.

5. The folding mechanism as described in claim 4, characterized in that, The elastic buckle is a cantilever spring. One end of the spring is connected to the first limiting part, and the other end is provided with a locking boss that protrudes toward the second limiting part. The locking boss is used to engage with the slot on the outer peripheral surface of the protrusion.

6. The folding mechanism as described in any one of claims 1-5, characterized in that, The mounting base is also provided with two baffles, which are respectively disposed on both sides of the groove along the second direction, for limiting the movement of the rotating shaft along the second direction.

7. The folding mechanism as described in any one of claims 1-5, characterized in that, The rotating shaft is arc-shaped and has several spaced-apart hollow holes. The rotating shaft is a one-piece aluminum alloy structure.

8. The folding mechanism as described in any one of claims 1-5, characterized in that, The end of the rotating shaft away from the protrusion is provided with a reinforcing support, which is used to connect to the skirt plate by fasteners.

9. A vehicle equipment compartment, comprising a skirt and mounting beams, characterized in that, It also includes a folding mechanism for connecting the skirt and the mounting beam, as described in any one of claims 1-8.

10. A rail vehicle, characterized in that, Includes the vehicle equipment compartment as described in claim 9.

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