High-speed train anti-drag apron board with efficient anti-drag function

Abstract

The utility model discloses a high-speed train anti-drag apron board with an efficient anti-drag function, which belongs to the technical field of rail transit and is characterized by comprising an apron board body, a flow guide mechanism is fixedly connected to the surface of the apron board body, and moving mechanisms are arranged at the top and the bottom of the inner side of the flow guide mechanism respectively. The apron board body can support and limit the flow guide mechanism, the protection plate is fixedly connected to the surface of the apron board body, direct physical protection is provided for the apron board body, damage of external impact to the apron board body is reduced, and for example, when a train runs into an area with large sand dust, part of sand dust can be prevented from directly impacting the apron board body; the service life of the apron board body is prolonged, the moving mechanism can be supported and limited, the flow guide groove is formed in the side, away from the apron board body, of the protection plate, airflow can be guided to flow through the apron board body and the protection plate more smoothly, airflow separation and turbulent flow are reduced, and therefore air resistance is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transit, and particularly relates to a drag reduction skirt board for a high-speed train with an efficient drag reduction function. Background Art

[0002] With the increase in the speed of EMUs, the influence of air resistance on EMUs is becoming greater and greater. It is necessary to install bogie skirt boards on both sides of the bogies under the car body of high-speed EMUs for drag reduction.

[0003] The existing installation structure of the skirt board of high-speed EMUs is to set fixed brackets under the car body underframe, install skirt board locks on the bogie skirt board, and fix the bogie skirt board through the skirt board locks. The essence of its connection and fixation scheme is threaded connection. In actual operation, there are often the following problems: the skirt board locks are prone to thread loosening, the bogie skirt board is prone to vibration noise, the positions where the skirt board locks are installed on the bogie skirt board are often damaged, and if the skirt board is not properly maintained during long-term operation, the skirt board may fall off, posing a great potential safety hazard.

[0004] The existing patent (Publication No.: CN206344827U) for an installation structure of a bogie skirt board of a high-speed EMU includes a bogie skirt board, a fixed bracket, an anti-rotation slider, a fastening bolt, a locknut, and a safety pin. There are 4 socket seats on the bogie skirt board, and 4 fixed pins on the fixed bracket. The 4 socket seats of the bogie skirt board and the 4 fixed pins of the fixed bracket are inserted and installed. A chute is provided on the inner side surface of the bogie skirt board, and an anti-rotation slider is arranged in the chute. The fastening bolt is placed in the anti-rotation slider and passes through the fixed bracket, and the bogie skirt board and the fixed bracket are fastened together through the locknut and the safety pin to form a stable anti-loosening structure. The utility model ensures that the bogie skirt board does not loosen, improves the safety of the bogie skirt board, and a nylon sleeve is provided between the socket seat and the fixed pin to reduce the movement noise of the bogie skirt board. The utility model provides a chute on the inner side surface of the bogie skirt board, and the exposed surface remains smooth, improving the appearance visual effect and air drag reduction effect of the bogie skirt board.

[0005] In view of the above problems, the existing patent provides a solution, but it lacks a structure for protecting the skirt board body. When the train enters an area with large dust, the dust impacts the skirt board body, thereby reducing the service life and drag reduction effect of the skirt board.

[0006] Therefore, a drag reduction skirt board for a high-speed train with an efficient drag reduction function is proposed. Utility Model Content

[0007] The purpose of the utility model is to provide a drag reduction skirt board for a high-speed train with an efficient drag reduction function, which can solve the problem that the existing rail transit lacks a structure for protecting the skirt board body, resulting in the dust impacting the skirt board body when the train enters an area with large dust, thereby reducing the service life and drag reduction effect of the skirt board.

[0008] To achieve the above object, the present utility model provides the following technical solution: A drag reduction skirt for a high-speed train with an efficient drag reduction function, including a skirt body, wherein a flow guiding mechanism is fixedly connected to the surface of the skirt body, and moving mechanisms are respectively arranged at the top and bottom inside the flow guiding mechanism;

[0009] The flow guiding mechanism includes a protection plate, a flow guiding groove, a moving plate and a dust baffle. The protection plate is fixedly connected to the surface of the skirt body. The flow guiding groove is arranged on the side of the protection plate away from the skirt body. The moving plate is slidably connected to both sides inside the moving mechanism. The dust baffle is welded to one side of two identical moving plates facing each other.

[0010] Preferably, the moving mechanism includes a limit sliding groove, a limit sliding block, a fixed block and an electric telescopic rod. The limit sliding grooves are respectively arranged at the top and bottom inside the protection plate.

[0011] Preferably, the limit sliding blocks are welded to the top and bottom of the moving plate. The limit sliding blocks are slidably connected to the inside of the limit sliding groove. The fixed block is fixedly connected to the inside of the limit sliding groove.

[0012] Preferably, the electric telescopic rods are fixedly connected to both sides of the fixed block. The side of the electric telescopic rod away from the fixed block is bolted to the surface of the limit sliding block.

[0013] Preferably, clamping grooves are arranged on both sides inside the limit sliding groove, and a buffer pad is bolted to the inside of the clamping groove.

[0014] Preferably, clamping blocks are bolted to both sides of the limit sliding block. The surface of the clamping block is coated with an anti-corrosion coating. The clamping block is used in cooperation with the clamping groove.

[0015] Preferably, a reinforcement ring is bolted to the side of the electric telescopic rod close to the fixed block. The reinforcement ring is made of a carbon fiber reinforced composite material.

[0016] Preferably, the skirt body is in a honeycomb shape and is made of a carbon fiber reinforced composite material.

[0017] Compared with the prior art, the beneficial effects of the present utility model are:

[0018] 1. The skirt board body of this application can support and limit the diversion mechanism. The protective board is fixedly connected to the surface of the skirt board body, providing direct physical protection for the skirt board body, reducing the damage to the skirt board body caused by external impacts. For example, when the train enters an area with large dust, it can block some dust from directly hitting the skirt board body, extending the service life of the skirt board body. And it can support and limit the moving mechanism. The diversion groove is opened on the side of the protective board away from the skirt board body, which can guide the air flow to flow more smoothly over the skirt board body and the protective board, reducing the separation and turbulence of the air flow, thereby reducing air resistance and improving the operation efficiency of the high-speed train. And in a dusty environment, the diversion groove can change the flow direction of the dust, reducing the accumulation and adhesion of dust on the surfaces of the skirt board body and the protective board, and reducing the damage of the dust to the skirt board. The moving board is slidably connected to both sides inside the moving mechanism and can be adjusted according to different operating conditions and environments. When encountering a large amount of dust, it can cooperate with the dust baffle and be adjusted to a suitable position to enhance the dust blocking effect. The dust baffle is welded to the opposite sides of two identical moving boards, forming an effective dust protection barrier. When the train enters a dusty area, it can block most of the dust, reducing the direct impact of the dust on the skirt board body and protecting the skirt board body from dust abrasion. The limiting sliding grooves are respectively opened at the top and bottom inside the protective board, providing a stable sliding track for the limiting sliding blocks to ensure the stability and directionality of the moving board during the moving process. The limiting sliding blocks are connected to the top and bottom of the moving board and cooperate with the limiting sliding grooves to enable the moving board to slide smoothly within a specified range. When adjusting the position of the moving board, the limiting sliding blocks ensure the accuracy and reliability of the movement. The fixed blocks are fixedly connected to the inside of the limiting sliding grooves, providing a stable installation foundation for the electric telescopic rods and ensuring that the electric telescopic rods will not displace or shake during operation, guaranteeing the accuracy and stability of the position adjustment of the moving board. The electric telescopic rods are fixedly connected to both sides of the fixed blocks, and the position of the limiting sliding blocks and the moving board can be controlled through telescopic movement, thereby adjusting the positions of the moving board and the dust baffle to achieve the best drag reduction and protection effects;

[0019] 2. Compared with the existing drag reduction skirt board of high-speed trains with efficient drag reduction functions, this application achieves the effect of protecting the skirt board body through the cooperation of the diversion mechanism and the moving mechanism, reducing the impact of dust on the skirt board body when the train enters an area with large dust, thereby improving the service life and drag reduction effect of the skirt board. Brief Description of the Drawings

[0020] Figure 1 It is the overall structure diagram of the drag reduction skirt board of the high-speed train with efficient drag reduction function of the present utility model;

[0021] Figure 2 It is the overall structure diagram of the diversion mechanism of the present utility model;

[0022] Figure 3 Structural schematic diagram of the clamping groove of the present utility model;

[0023] Figure 4 The present utility model Figure 3 Enlarged schematic diagram at position A in;

[0024] Figure 5 Structural schematic diagram of the skirt board body of the present utility model;

[0025] Figure 6 Structural schematic diagram of the clamping block of the present utility model.

[0026] In the figure, 1, skirt board body; 2, flow guiding mechanism; 201, protection board; 202, flow guiding groove; 203, moving plate; 204, dust baffle; 3, moving mechanism; 301, limit sliding groove; 302, limit sliding block; 303, fixing block; 304, electric telescopic rod; 4, clamping groove; 5, buffer pad; 6, clamping block; 7, reinforcing ring. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0028] Please refer to Figures 1-6 , the present utility model provides a technical solution:

[0029] A high-speed train drag reduction skirt board with an efficient drag reduction function, including a skirt board body 1, a flow guiding mechanism 2 is fixedly connected to the surface of the skirt board body 1, and moving mechanisms 3 are respectively arranged at the top and bottom inside the flow guiding mechanism 2;

[0030] The flow guiding mechanism 2 includes a protection board 201, a flow guiding groove 202, a moving plate 203 and a dust baffle 204. The protection board 201 is fixedly connected to the surface of the skirt board body 1, the flow guiding groove 202 is arranged on the side of the protection board 201 away from the skirt board body 1, the moving plate 203 is slidably connected to both sides inside the moving mechanism 3, and the dust baffle 204 is welded to the opposite sides of two identical moving plates 203.

[0031] In this embodiment: By providing the skirt body 1, the flow guiding mechanism 2 can be supported and positioned. By providing the protective plate 201 fixedly connected to the surface of the skirt body 1, direct physical protection is provided for the skirt body 1, reducing damage to the skirt body 1 caused by external impacts. For example, when the train enters an area with large amounts of dust, it can block some dust from directly hitting the skirt body 1, extending the service life of the skirt body 1. Also, it can support and position the moving mechanism 3. By providing the flow guiding groove 202 on the side of the protective plate 201 away from the skirt body 1, the airflow can be guided to flow more smoothly over the skirt body 1 and the protective plate 201, reducing the separation and turbulence of the airflow, thereby reducing air resistance and improving the running efficiency of the high-speed train. Moreover, in a dusty environment, the flow guiding groove 202 can change the flow direction of the dust, reducing the accumulation and adhesion of dust on the surfaces of the skirt body 1 and the protective plate 201, and reducing the damage of dust to the skirt. By providing the moving plate 203 slidably connected to both sides inside the moving mechanism 3, it can be adjusted according to different operating conditions and environments. In the case of large amounts of dust, it can cooperate with the dust baffle 204 and be adjusted to a suitable position to enhance the dust blocking effect. By providing the dust baffle 204 welded to the opposite sides of two identical moving plates 203, an effective dust protection barrier is formed. When the train enters a dusty area, it can block most of the dust, reducing the direct impact of dust on the skirt body 1 and protecting the skirt body 1 from dust abrasion.

[0032] Specifically, as Figure 4 、 Figure 5 、 Figure 6 shown, the moving mechanism 3 includes a limit sliding groove 301, a limit sliding block 302, a fixed block 303, and an electric telescopic rod 304. The limit sliding grooves 301 are respectively opened at the top and bottom inside the protective plate 201.

[0033] Specifically, as Figure 4 、 Figure 5 shown, the limit sliding blocks 302 are welded to the top and bottom of the moving plate 203. The limit sliding blocks 302 are slidably connected to the inside of the limit sliding groove 301, and the fixed block 303 is fixedly connected to the inside of the limit sliding groove 301.

[0034] Specifically, as Figure 4 、 Figure 5 shown, the electric telescopic rods 304 are fixedly connected to both sides of the fixed block 303. The sides of the electric telescopic rods 304 away from the fixed block 303 are bolted to the surface of the limit sliding blocks 302.

[0035] In this embodiment, by setting the limiting slide grooves 301 respectively opened at the top and bottom of the inner side of the protective plate 201, a stable sliding track is provided for the limiting slider 302, ensuring the stability and directionality of the moving plate 203 during movement. By setting the limiting slider 302 connected to the top and bottom of the moving plate 203, and cooperating with the limiting slide grooves 301, the moving plate 203 can slide smoothly within a specified range. When adjusting the position of the moving plate 203, the accuracy and reliability of the movement are guaranteed by setting the limiting slider 302. The fixed block 303 is fixedly connected to the inner side of the limiting slide groove 301, providing a stable installation foundation for the electric telescopic rod 304, and ensuring that the electric telescopic rod 304 will not be displaced or shaken during operation, thereby ensuring the accuracy and stability of the position adjustment of the movable plate 203. By setting the electric telescopic rod 304 to be fixedly connected to both sides of the fixed block 303, the position of the limiting slider 302 and the movable plate 203 can be controlled through telescopic movement, thereby adjusting the position of the movable plate 203 and the dust baffle 204 to achieve the best drag reduction and protection effect.

[0036] Specifically, Figure 6 As shown, the two sides of the inner side of the limiting sliding groove 301 are provided with clamping grooves 4, and the inner side of the clamping grooves 4 is bolted with a buffer pad 5.

[0037] Specifically, Figure 6 As shown, the two sides of the limit slider 302 are bolted with clamping blocks 6 , the surface of the clamping blocks 6 is coated with anti-corrosion paint, and the clamping blocks 6 are used in conjunction with the clamping grooves 4 .

[0038] In this embodiment: by setting the clamping groove 4, which is opened on both sides of the inner side of the limiting slide groove 301, a specific installation and operation space is provided for the clamping block 6, ensuring that the limiting slider 302 will not separate from the limiting slide groove 301 during the movement, thereby improving the stability and reliability of the entire moving mechanism 3, and the buffer pad 5 is bolted to the inner side of the clamping groove 4. When the limiting slider 302 contacts the clamping groove 4 during the movement, the buffer pad 5 can play a buffering role, reduce impact and vibration, and reduce the generation of noise. The clamping block 6 is bolted to both sides of the limiting slider 302 and the clamping groove 4, the stability of the limit slider 302 in the limit slide groove 301 is further enhanced, and the clamping block 6 can prevent the limit slider 302 from escaping from the limit slide groove 301 when subjected to a large external force, ensuring that the movable plate 203 can maintain a correct position under various operating conditions. By setting an anti-corrosion coating and applying it on the surface of the clamping block 6, the clamping block 6 can be effectively prevented from being corroded by the external environment, such as moisture, chemicals, etc. In the complex environment of high-speed train operation, the anti-corrosion coating can extend the service life of the clamping block 6 and ensure its stable performance.

[0039] Specifically, Figure 5As shown, a reinforcement ring 7 is bolted to the side of the electric telescopic rod 304 close to the fixed block 303, and the reinforcement ring 7 is made of carbon fiber reinforced composite material.

[0040] Specifically, as Figure 1 , Figure 3 , Figure 5 shown, the skirt body 1 is provided in a honeycomb shape, and the skirt body 1 is made of carbon fiber reinforced composite material.

[0041] In this embodiment: By setting the reinforcement ring 7, the connection strength between the electric telescopic rod 304 and the fixed block 303 can be enhanced, preventing loosening or damage of the connection part due to excessive force during the telescopic process of the electric telescopic rod 304. By setting the reinforcement ring 7 to be made of carbon fiber reinforced composite material, the carbon fiber reinforced composite material reinforcement ring 7 can withstand greater tensile and compressive forces, ensuring that the electric telescopic rod 304 can work stably. By setting the skirt body 1 in a honeycomb shape, this structure has high strength and stiffness, and at the same time is light in weight. The honeycomb structure can reduce the amount of material used and the weight of the entire drag reduction skirt while ensuring the strength of the skirt body 1. Moreover, the honeycomb structure can also improve the flow state of the air flow on the surface of the skirt body 1, reducing air resistance. The air flow can flow more smoothly in the honeycomb voids, reducing the separation and turbulence of the air flow and improving the drag reduction effect. By setting the skirt body 1 to be made of carbon fiber reinforced composite material, this material has extremely high strength and stiffness, is more durable than traditional materials such as metals, and can withstand greater air pressure and external force impacts during the operation of high-speed trains, and is not easily deformed or damaged.

[0042] Working principle: First, the user firmly fixes and installs the skirt body 1 on both sides of the bottom of the high-speed train. Then, when the high-speed train is put into operation, the drag-reducing skirt starts to play an important role. The skirt body 1 adopts a honeycomb design, and this structure can significantly improve the flow state of the air flow on its surface and reduce air resistance. After that, when the train enters different operating environments such as those with large amounts of dust, in order to enhance the protection effect, the user powers on and activates the electric telescopic rod 304. The electric telescopic rod 304 starts to push the limit slider 302. Under its pushing action, the limit slider 302 moves smoothly in the limit chute 301, and then drives the moving plate 203 to adjust to a suitable position. During the movement, the clamping blocks 6 on both sides of the limit slider 302 slide smoothly in the clamping grooves 4 on the inner side of the limit chute 301. When the moving plate 203 is adjusted to a suitable position, the dust baffle plates 204 welded on the opposite sides of the two moving plates 203 together form an effective dust protection barrier, which can block most of the dust, greatly reducing the direct impact and abrasion of the dust on the skirt body 1. Then, when the position adjustment of the moving plate 203 is completed, the user stops the operation of the electric telescopic rod 304. At this time, the dust baffle plates 204 provide all-round wind and sand blocking for the front and rear sides of the skirt body 1, providing reliable protection for the skirt body 1. Finally, when the train leaves the dusty area or needs to adjust the drag-reducing effect, the user powers on and activates the electric telescopic rod 304 again to make it work in reverse. The electric telescopic rod 304 pulls the limit slider 302 backward, prompting the dust baffle plates 204 and the moving plates 203 to return to their original positions for readjustment according to different operating conditions.

[0043] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A high-speed train drag reduction skirt with efficient drag reduction function, comprising a skirt body (1), characterized in that: A flow guiding mechanism (2) is fixedly connected to the surface of the skirt plate body (1), and a moving mechanism (3) is respectively provided at the top and the bottom of the inner side of the flow guiding mechanism (2); The flow guide mechanism (2) comprises a protective plate (201), a flow guide groove (202), a movable plate (203) and a dust shield (204); the protective plate (201) is fixedly connected to the surface of the skirt plate body (1); the flow guide groove (202) is provided on a side of the protective plate (201) away from the skirt plate body (1); the movable plate (203) is slidably connected to both sides of the inner side of the movable mechanism (3); and the dust shield (204) is welded to opposite sides of two identical movable plates (203).

2. The high-speed train drag reduction skirt with efficient drag reduction function according to claim 1, characterized in that: The moving mechanism (3) comprises a limiting slide groove (301), a limiting slider (302), a fixing block (303) and an electric telescopic rod (304); the limiting slide groove (301) is respectively arranged at the top and the bottom of the inner side of the protective plate (201).

3. The high-speed train drag reduction skirt with efficient drag reduction function according to claim 2, characterized in that: The limiting slider (302) is welded to the top and bottom of the movable plate (203), the limiting slider (302) is slidably connected to the inner side of the limiting slide groove (301), and the fixed block (303) is fixedly connected to the inner side of the limiting slide groove (301).

4. The high-speed train drag reduction skirt with efficient drag reduction function according to claim 2, characterized in that: The electric telescopic rod (304) is fixedly connected to both sides of the fixed block (303), and the side of the electric telescopic rod (304) away from the fixed block (303) is bolted to the surface of the limiting slider (302).

5. The high-speed train drag reduction skirt with efficient drag reduction function according to claim 2, characterized in that: The two sides of the inner side of the limiting sliding groove (301) are provided with clamping grooves (4), and the inner side of the clamping groove (4) is bolted with a buffer pad (5).

6. The high-speed train drag reduction skirt with efficient drag reduction function according to claim 2, characterized in that: The two sides of the limit sliding block (302) are bolted with clamping blocks (6), the surface of the clamping block (6) is coated with anti-corrosion paint, and the clamping block (6) is used in conjunction with the clamping groove (4).

7. The high-speed train drag reduction skirt with efficient drag reduction function according to claim 2, characterized in that: A reinforcement ring (7) is bolted to one side of the electric telescopic rod (304) close to the fixing block (303), and the reinforcement ring (7) is made of carbon fiber reinforced composite material.

8. The high-speed train drag reduction skirt with efficient drag reduction function according to claim 1, characterized in that: The skirt plate body (1) is designed to be honeycomb-shaped, and the skirt plate body (1) is made of carbon fiber reinforced composite material.

Images