A movable skirt and a rail vehicle

Abstract

The application discloses an active skirt and a railway vehicle. The active skirt comprises a skirt support fixed to a vehicle body frame, a connecting rod mechanism connecting the skirt support and a skirt body, and a telescopic rod for driving the connecting rod mechanism. The connecting rod mechanism comprises a driving connecting rod and a driven connecting rod. The driving connecting rod comprises a rod part and an ear part extending to a first side of the rod part. The two ends of the rod part are respectively hinged to the skirt support and the skirt body. The fixed end of the telescopic rod is hinged to a first point of the skirt support, and the movable end of the telescopic rod is hinged to a second point of the ear part. In the closed state of the active skirt, the driven connecting rod is located on the same side of the connecting line of the two end hinging points of the ear part, the distance from the driven connecting rod to the skirt body is greater than the distance from the driving connecting rod to the skirt body and the distance from the first point to the skirt body. The active skirt disclosed by the application can be well applied to a narrow structure space area and has strong universality.

Description

Technical Field

[0001] This application relates to the field of rail vehicle technology, and in particular to a movable skirt and rail vehicle. Background Technology

[0002] Skirts are plate-shaped structural components installed at the lower end of the side beams of railway vehicle underframes. Their main functions include optimizing the vehicle's appearance, protecting undercarriage equipment, improving aerodynamic performance, protecting the car body and equipment, guiding airflow inside and outside the car, and facilitating access for maintenance personnel to critical equipment. In frequently maintained areas, such as bogie areas, movable skirts are typically installed for easy access and maintenance. However, most linkage mechanisms supporting the opening and closing of movable skirts currently suffer from the drawback of large space requirements, making them unsuitable for use in areas with limited structural space, resulting in poor versatility for movable skirts. Summary of the Invention

[0003] In view of this, this application provides a movable skirt and a rail vehicle, which can be well applied in areas with limited structural space and has strong versatility.

[0004] To achieve the above objectives, this application provides the following technical solution:

[0005] A movable skirt panel includes a skirt panel bracket fixed to a vehicle chassis frame, a linkage mechanism connecting the skirt panel bracket and the skirt panel body, and a telescopic rod for driving the linkage mechanism; the linkage mechanism includes an active linkage and a driven linkage, the active linkage includes a rod portion and an ear portion extending to a first side of the rod portion, the two ends of the rod portion are respectively hinged to the skirt panel bracket and the skirt panel body, the fixed end of the telescopic rod is hinged to a first point of the skirt panel bracket, and the movable end of the telescopic rod is hinged to a second point of the ear portion;

[0006] In the closed state of the movable skirt, the driven link and the ear are located on the same side of the line connecting the hinge points at both ends of the link. The distance from the driven link to the skirt body is greater than the distance from the driving link to the skirt body and also greater than the distance from the first point to the skirt body.

[0007] Optionally, in the above-mentioned movable skirt, the first distance from the first point to the hinge point between the rod and the skirt support is less than or equal to the second distance from the second point to the line connecting the hinge points at both ends of the rod.

[0008] Optionally, in the aforementioned movable skirt, the second distance is set to 30mm~40mm.

[0009] Optionally, in the above-mentioned movable skirt, the line connecting the hinge points at both ends of the rod and the line connecting the hinge points at both ends of the driven link satisfy the parallel condition, and the line connecting the two hinge points of the rod and the driven link located on the side of the skirt body satisfies the parallel condition with the line connecting the two hinge points located on the side of the skirt support.

[0010] Optionally, in the above-mentioned movable skirt, the length of the line connecting the hinge points at both ends of the rod is the first length, and the length of the line connecting the two hinge points of the rod and the driven link located on the side of the skirt body is the second length, and the first length is 3 to 3.5 times the second length.

[0011] Optionally, in the aforementioned movable skirt, the skirt bracket is connected to the vehicle body chassis via a first slider and a first bolt assembly, so that the installation position of the skirt bracket can be adjusted in a direction perpendicular to the motion plane of the linkage mechanism.

[0012] Optionally, the above-mentioned movable skirt panel includes a connecting seat fixed to the skirt panel body, and both the rod and the driven connecting rod are hinged to the connecting seat;

[0013] The connecting seat is connected to the skirt body via a second slider and a second bolt assembly, so that the installation position of the connecting seat can be adjusted in a direction perpendicular to the motion plane of the linkage mechanism.

[0014] Optionally, in the above-mentioned movable skirt, the rod and the driven connecting rod are both hinged to the connecting seat and the skirt support via rolling bearings, and / or, the two ends of the telescopic rod are respectively hinged to the ear and the skirt support via rolling bearings.

[0015] Optionally, in the above-mentioned movable skirt, the extreme extension position of the movable end of the telescopic rod constitutes the limit for the opening and closing positions of the skirt body.

[0016] A rail vehicle includes a movable skirt disposed in the bogie region, the movable skirt being the movable skirt disclosed in any of the preceding claims.

[0017] As can be seen from the above technical solution, in the movable skirt provided by this application, the active link of the linkage mechanism includes a rod and an ear extending to a first side of the rod. The movable end of the telescopic rod used to drive the linkage mechanism is hinged to the ear. Furthermore, in the closed state of the movable skirt, the driven link and the ear are located on the same side of the line connecting the hinge points at both ends of the rod. The distance from the driven link to the skirt body is greater than both the distance from the active link to the skirt body and the distance from the first point to the skirt body. Through the above-mentioned improvements to the structure of the active link and the layout of the telescopic rod and linkage mechanism, the movable skirt of this application can achieve strong versatility, thus enabling it to be well applied in areas with limited structural space. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0019] Figure 1 This is a bottom view of the movable skirt panel according to an embodiment of this application;

[0020] Figure 2 This is an exploded view of the movable skirt panel according to an embodiment of this application;

[0021] Figure 3 This is a side view of the movable skirt in the closed state according to an embodiment of this application;

[0022] Figure 4 This is a side view of the movable skirt panel in the first open position according to an embodiment of this application;

[0023] Figure 5 This is a side view of the movable skirt in the second open position according to an embodiment of this application.

[0024] The annotations in the attached figures are explained as follows:

[0025] 100. Skirt panel body; 200. First support component; 300. Second support component; 400. Third support component;

[0026] 210. Skirt support bracket; 220. First flat washer; 230. Spring washer; 240. First bolt;

[0027] 510, Second bolt; 520, Second flat washer; 530, First nut; 540, Telescopic rod; 550, Third bolt; 560, Rolling bearing;

[0028] 610. Driving link; 611. Link section; 612. Ear section; 620. Driven link;

[0029] 710. Connecting seat; 720. Second nut; 730. Third flat washer; 740. Fourth bolt;

[0030] 810. First slider; 820. Second slider; 830. Third slider; 900. Skirt lock;

[0031] A. First hinge point; B. Second hinge point; C. Third hinge point; D. Fourth hinge point;

[0032] E, fifth hinge point; F, sixth hinge point. Detailed Implementation

[0033] 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.

[0034] In the description of this application, the references to terms such as "one embodiment," "some embodiments," "example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0035] In the description of this specification, 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 a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0036] See Figures 1-5This application provides a movable skirt, mainly including a skirt bracket 210 fixed to a car body underframe (not shown in the figure), a linkage mechanism connecting the skirt bracket 210 and the skirt body 100, and a telescopic rod 540 for driving the linkage mechanism. The car body underframe is the frame structure at the bottom of the rail vehicle body, providing the mounting base for the skirt bracket 210. The skirt bracket 210 is fixedly installed below the car body underframe and connected to the skirt body 100 via the linkage mechanism. The linkage mechanism may include an active linkage 610 and a driven linkage 620. The active linkage 610 includes a rod portion 611 and an ear portion 612 extending to a first side of the rod portion 611. The rod portion 611 is the main body of the active linkage 610, and both ends of the rod portion 611 are hinged to the skirt bracket 210 and the skirt body 100 respectively (i.e.,...). Figure 5 The fourth hinge point D and the first hinge point A in the rod 611), the ear 612 is located on one side of the width direction of the rod 611, that is, the ear 612 is located on one side of the line connecting the two hinge points of the rod 611. The fixed end of the telescopic rod 540 is hinged to the first point of the skirt bracket 210 (i.e., Figure 5 The fifth hinge point E), the movable end of the telescopic rod 540 is hinged to the second point of the ear 612 (i.e. Figure 5 The sixth hinge point F in the structure can drive the linkage mechanism to move by the telescopic movement of the telescopic rod 540, thereby causing the skirt body 100 to move relative to the skirt support 210 along a preset motion trajectory, which can realize opening and closing.

[0037] Figure 3 The example demonstrates the closed state of the movable skirt panel. Figure 4 and Figure 5 The example demonstrates two different positions of the movable skirt panel in its open state, wherein, Figure 4 The degree of openness displayed is greater than Figure 5 The degree of opening shown indicates the extent to which the skirt can move as it opens. Figure 3 The state shown Figure 5 The state transition shown can undergo the following processes: Figure 4 The state shown, that is, Figure 4 The state shown is Figure 3 The shown closed state and Figure 5 This is an intermediate state between the open states shown.

[0038] In the closed state of the movable skirt panel, the driven link 620 and the ear 612 are located on the same side of the line connecting the hinge points at both ends of the link 611. The distance from the driven link 620 to the skirt panel body 100 is greater than the distance from the driving link 610 to the skirt panel body 100, and also greater than the distance from the first point to the skirt panel body 100. That is, after the linkage mechanism is folded up, both the driven link 620 and the ear 612 are located on the side of the driving link 610's link 611 away from the skirt panel body 100. Furthermore, the end of the telescopic rod 540 away from the ear 612, that is, the end of the telescopic rod 540 hinged to the skirt panel bracket 210, is located on the side of the driven link 620 closer to the skirt panel body 100. Figure 3 As shown, in the closed state of the movable skirt panel, the telescopic rod 540 extends along the width direction of the overall structure of the movable skirt panel (i.e., Figure 3 It is located inside the folded-down linkage mechanism (in the left-right direction). See also Figure 4 and Figure 5 In the vertical direction (vertical direction in the figure), the telescopic rod 540 and the linkage mechanism after opening are relatively compact in the overall height direction, thus creating a larger range of clearance in the vertical direction. This results in a larger operating space for maintenance workers after the movable skirt is opened, meaning a larger space is exposed leading to the equipment compartment under the vehicle body after the movable skirt is opened. Compared with traditional movable skirts, the movable skirt of this application improves the structure of the active linkage 610 and the layout of the telescopic rod 540 and linkage mechanism, giving it strong versatility and making it well-suited for use in areas with limited structural space.

[0039] In some embodiments, the ear portion 612 and the rod portion 611 can be configured as an integral structure, and the extending direction of the ear portion 612 can be perpendicular to the length direction of the rod portion 611. Of course, in other embodiments, the ear portion 612 and the rod portion 611 can be configured as two independent parts and fixedly connected together by means such as welding, riveting, or bolting. The extending direction of the ear portion 612 can be configured to form an acute angle with the length direction of the rod portion 611; for example, the end of the ear portion 612 away from the rod portion 611 may be biased towards the fourth hinge point D or towards the first hinge point A.

[0040] See Figure 4 and Figure 5In some embodiments, the movable skirt can be configured such that the first distance from the first point (i.e., the fifth hinge point E) to the hinge point between the rod 611 and the skirt support 210 (i.e., the fourth hinge point D) is less than or equal to the second distance from the second point (i.e., the sixth hinge point F) to the line connecting the hinge points at both ends of the rod 611 (i.e., the line connecting the first hinge point A and the fourth hinge point D). This configuration allows for a more compact layout of the telescopic rod 540 and the linkage mechanism, efficiently saving space occupied by the movable skirt. Furthermore, the angle between the telescopic rod 540 and the active linkage 610 remains relatively small in the closed state and at all positions throughout the opening process.

[0041] In some embodiments, the second distance can be set to 30mm~40mm, for example, 35mm, 38mm, etc. That is, the point of application of the driving force of the telescopic rod 540 to the linkage mechanism is offset by 30mm~40mm relative to the rod portion 611 of the active link 610. This setting helps to ensure smooth force transmission from the telescopic rod 540 to the linkage mechanism.

[0042] In some embodiments, the linkage mechanism connecting the skirt support 210 and the skirt body 100 can be configured as a parallelogram linkage mechanism. In such an embodiment, the line connecting the hinge points at both ends of the rod 611 (i.e., the line connecting the first hinge point A and the fourth hinge point D) and the line connecting the hinge points at both ends of the driven link 620 (i.e., the line connecting the second hinge point B and the third hinge point C) satisfy the parallel condition. Furthermore, the lines connecting the two hinge points of the rod 611 and the driven link 620 located on the side of the skirt body 100 (i.e., the line connecting the first hinge point A and the second hinge point B) and the lines connecting the two hinge points located on the side of the skirt support 210 (i.e., the line connecting the fourth hinge point D and the third hinge point C) satisfy the parallel condition. See also Figures 2-5 The active link 610 and the driven link 620 are staggered along the length of the movable skirt. As the movable skirt opens, within the motion plane of the linkage mechanism, the driven link 620 can move from one side of the link 611 of the active link 610 to the other side of the link 611. That is, the driven link 620 changes from being on the same side of the link 611 as the ear 612 to being on a different side of the link 611. Since the linkage mechanism is a parallelogram linkage mechanism, the skirt body 100 does not rotate when moving along a preset trajectory within the motion plane of the linkage mechanism. In other words, as the skirt body 100 rises and falls, the angle between the skirt body 100 and the ground remains unchanged.

[0043] The length of the line connecting the hinge points at both ends of the rod 611 can be set as a first length, and the length of the line connecting the two hinge points of the rod 611 and the driven link 620 located on the side of the skirt body 100 can be set as a second length. Based on the linkage mechanism being a parallelogram linkage mechanism, the first length can be set to 3 to 3.5 times the second length, for example, it can be 3.26 times, 3.35 times, etc.

[0044] The telescopic rod 540 can be of various types; for example, it can be a gas spring, a hydraulic rod, etc. In some embodiments, the movable skirt can be configured such that the extreme extension position of the movable end of the telescopic rod 540 constitutes a limit for the opening and closing positions of the skirt body 100. Here, the extreme extension position of the movable end of the telescopic rod 540 refers to the position of the movable end when the telescopic rod 540 is extended to its maximum length, and the closing position of the skirt body 100 refers to the position of the skirt body 100 in the closed state of the movable skirt (e.g., ...). Figure 3 As shown), the opening position of the skirt body 100 refers to the position of the skirt body 100 in its maximum open state. In this embodiment, both the opening and closing positions of the skirt body 100 are limited by the maximum extension position of the movable end of the telescopic rod 540. That is, the limiting effect is achieved by utilizing the maximum stroke of the telescopic rod 540. This eliminates the need for conventional limiting structures, making the structure more compact, simple, and stable.

[0045] See Figure 2 and Figure 5 In some embodiments, the movable skirt can be configured such that the skirt bracket 210 is connected to the vehicle chassis via a first slider 810 and a first bolt assembly, so that the installation position of the skirt bracket 210 can be adjusted in a direction perpendicular to the motion plane of the linkage mechanism. For example, the first bolt assembly may include a first bolt 240, a first flat washer 220, and a spring washer 230, wherein the spring washer 230 is located between the head of the first flat washer 220 and the first bolt 240, which can play an anti-loosening role. The first bolt 240 passes through the skirt bracket 210 and the first slider 810 from bottom to top and is connected to the vehicle chassis. Since the first slider 810 can slide relative to the vehicle chassis to fine-tune the installation position, the installation position of the skirt bracket 210 can be finely adjusted in a direction perpendicular to the motion plane of the linkage mechanism.

[0046] In some embodiments, the movable skirt panel may include a connecting seat 710 fixed to the skirt panel body 100, with the rod portion 611 and the driven link 620 both hinged to the connecting seat 710. The connecting seat 710 may be configured to be connected to the skirt panel body 100 via a second slider 820 and a second bolt assembly, so that the installation position of the connecting seat 710 can be adjusted in a direction perpendicular to the plane of motion of the linkage mechanism. For example, the second bolt assembly may include a second nut 720, a third flat washer 730, and a fourth bolt 740, wherein the fourth bolt 740 passes sequentially through the third flat washer 730, the second slider 820, and the connecting seat 710 and is connected to the second nut 720. Since the second slider 820 can slide relative to the skirt panel body 100 to fine-tune the installation position, the installation position of the connecting seat 710 can be fine-tuned in a direction perpendicular to the plane of motion of the linkage mechanism.

[0047] In some embodiments, the rod 611 and the driven link 620 are both hinged to the connecting seat 710 and the skirt bracket 210 via rolling bearings 560. This arrangement ensures smoother opening and closing of the movable skirt and helps reduce abnormal noise. In some embodiments, both ends of the telescopic rod 540 are hinged to the lug 612 and the skirt bracket 210 via rolling bearings 560, respectively. Of course, in other embodiments, the telescopic rod 540 can also be hinged to the lug 612 and the skirt bracket 210 via bolt assemblies. For example, the fixed end of the telescopic rod 540 can be connected to the skirt bracket 210 via a second bolt 510, a second flat washer 520, and a first nut 530, and the movable end of the telescopic rod 540 can be connected to the lug 612 of the driving link 610 via a third bolt 550, a fourth flat washer (not shown in the figure), and a third nut (not shown in the figure).

[0048] See Figure 1 and Figure 2In some embodiments, the movable skirt may include a first support assembly 200, a second support assembly 300, and a third support assembly 400. The skirt body 100 is connected to the vehicle chassis via the first support assembly 200, the second support assembly 300, and the third support assembly 400. The first support assembly 200 and the third support assembly 400 both include the aforementioned linkage mechanism and skirt bracket 210. The second support assembly 300 and the third support assembly 400 both include a fastening interface for connection with the skirt lock 900. In other words, the third support assembly 400 has a similar structure to the first support assembly 200 and incorporates the interface function of the second support assembly 300; it can be understood as a structural combination of the first support assembly 200 and the second support assembly 300. In some embodiments, the skirt bracket 210 of the third support assembly 400 can be connected to the vehicle chassis via a third slider 830. The function of the third slider 830 is similar to that of the first slider 810, both used to adjust the installation position of the skirt bracket 210 in a direction perpendicular to the movement plane of the linkage mechanism.

[0049] This application also provides a rail vehicle including the movable skirts disclosed in the above embodiments. Since the movable skirts disclosed in the above embodiments have the aforementioned technical effects, the rail vehicle having these movable skirts also has the aforementioned technical effects, and will not be described again here. In some embodiments, the movable skirts of the rail vehicle can be disposed in the bogie region, that is, the movable skirts can be disposed on the outside of the bogies of the rail vehicle. Of course, in other embodiments, the movable skirts can also be disposed in other areas under the car body of the rail vehicle.

[0050] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0051] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A movable skirt panel, comprising a skirt panel bracket fixed to a vehicle chassis frame, a linkage mechanism connecting the skirt panel bracket and the skirt panel body, and a telescopic rod for driving the linkage mechanism, characterized in that, The linkage mechanism includes an active linkage and a driven linkage. The active linkage includes a rod portion and an ear portion extending to a first side of the rod portion. The two ends of the rod portion are respectively hinged to the skirt board bracket and the skirt board body. The fixed end of the telescopic rod is hinged to a first point of the skirt board bracket, and the movable end of the telescopic rod is hinged to a second point of the ear portion. In the closed state of the movable skirt, the driven link and the ear are located on the same side of the line connecting the hinge points at both ends of the link. The distance from the driven link to the skirt body is greater than the distance from the driving link to the skirt body and also greater than the distance from the first point to the skirt body.

2. The movable skirt board according to claim 1, characterized in that, The first distance from the first point to the hinge point between the rod and the skirt bracket is less than or equal to the second distance from the second point to the line connecting the hinge points at both ends of the rod.

3. The movable skirt board according to claim 2, characterized in that, The second distance is set to 30mm~40mm.

4. The movable skirt board according to claim 2, characterized in that, The line connecting the hinge points at both ends of the rod and the line connecting the hinge points at both ends of the driven link are parallel to each other. The line connecting the two hinge points of the rod and the driven link on the side of the skirt body is parallel to the line connecting the two hinge points on the side of the skirt support.

5. The movable skirt board according to claim 4, characterized in that, The length of the line connecting the hinge points at both ends of the rod is the first length, and the length of the line connecting the two hinge points of the rod and the driven link located on the side of the skirt body is the second length. The first length is 3 to 3.5 times the second length.

6. The movable skirt board according to claim 1, characterized in that, The skirt bracket is connected to the vehicle body chassis via a first slider and a first bolt assembly, so that the installation position of the skirt bracket can be adjusted in a direction perpendicular to the motion plane of the linkage mechanism.

7. The movable skirt board according to claim 6, characterized in that, Includes a connecting seat fixed to the skirt body, and both the rod and the driven connecting rod are hinged to the connecting seat; The connecting seat is connected to the skirt body via a second slider and a second bolt assembly, so that the installation position of the connecting seat can be adjusted in a direction perpendicular to the motion plane of the linkage mechanism.

8. The movable skirt board according to claim 7, characterized in that, Both the rod and the driven connecting rod are hinged to the connecting seat and the skirt bracket via rolling bearings, and / or, both ends of the telescopic rod are respectively hinged to the ear and the skirt bracket via rolling bearings.

9. The movable skirt board according to any one of claims 1 to 8, characterized in that, The maximum extension position of the movable end of the telescopic rod constitutes the limit for the opening and closing positions of the skirt body.

10. A rail vehicle comprising movable skirts disposed in the bogie region, characterized in that, The movable skirt is the movable skirt as described in any one of claims 1 to 9.

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