A skirt structure

Abstract

The application discloses a skirt structure for a maglev train, which comprises a first skirt, a second skirt, a third skirt and a skirt framework; the skirt framework is used for being connected with a suspension frame of the maglev train, and the first skirt is used for being connected with a train body of the maglev train; the second skirt and the third skirt are arranged on the skirt framework, and the second skirt is located between the first skirt and the third skirt. The skirt structure meets the displacement requirement of the high-speed maglev train.

Description

Technical Field

[0001] This invention relates to the field of high-speed maglev train technology, and in particular to a skirt structure. Background Technology

[0002] The high-speed maglev train has suspension frames, electromagnets, and other equipment under its body, and the skirts need to cover these components. Moreover, when the train is running, especially when it needs to turn, go uphill, or go downhill, displacement will occur between the car body and the suspension frames, between the suspension frames, and between the suspension frame support arms and the electromagnets. The single-piece skirt structure of existing EMU projects cannot meet the operating requirements of high-speed maglev trains.

[0003] Therefore, how to provide a skirt structure that meets the displacement requirements of high-speed maglev trains is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a skirt structure to meet the displacement requirements of high-speed maglev trains.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A skirt structure for a maglev train includes a first skirt, a second skirt, a third skirt, and a skirt frame;

[0007] The skirt frame is used to connect with the suspension frame of the maglev train, and the first skirt is used to connect with the car body of the maglev train.

[0008] The second and third skirt panels are set on the skirt panel frame, with the second skirt panel located between the first and third skirt panels.

[0009] Optionally, in the above-mentioned skirt structure, a buffer structure is provided between the first skirt and the second skirt.

[0010] Optionally, in the above-mentioned skirt structure, the buffer structure is a ramp, or a gap structure along the height and width directions of the maglev train.

[0011] Optionally, in the above-mentioned skirt structure, a rubber strip is provided at at least one of the following locations: the connection between the first skirt and the second skirt, between each pair of adjacent second skirts, between each pair of adjacent third skirts, between the second skirt and the third skirt, and at the connection between the third skirt and the electromagnet of the maglev train.

[0012] Optionally, in the above-mentioned skirt structure, a skirt mounting seat and a fixing seat are provided on the vehicle body;

[0013] The first skirt board is connected to the skirt board mounting base and rotates around the skirt board mounting base to switch between the open and locked states of the first skirt board.

[0014] The first skirt panel is connected to the fixed seat via a locking structure to support the first skirt panel when it is in the open state and to tighten the first skirt panel when it is in the locked state.

[0015] Optionally, in the above-mentioned skirt structure, the locking structure includes a rotating plate, a first telescopic member, a second telescopic member, and a skirt locking seat;

[0016] The first end of the rotating plate is connected to the fixed base and rotates around the fixed base; the second end of the rotating plate is connected to the fixed base through the first telescopic member.

[0017] One end of the skirt locking seat is connected to the third end of the rotating plate, and the other end is engaged with the locking seat located on the first skirt to tighten the first skirt when the first skirt is in the locked state.

[0018] One end of the second telescopic component is connected to the first skirt panel, and the other end is connected to the fixed base.

[0019] Optionally, the above-described skirt structure further includes an elastic element, one end of the skirt locking seat is hinged to the third end of the rotating plate, one end of the elastic element is connected to the skirt locking seat, and the other end is connected to the second telescopic element; and / or,

[0020] A first positioning block is provided on the rotating plate to limit the angle of rotation of the rotating plate around the fixed base; and / or,

[0021] A second positioning block is provided on the rotating plate to keep the skirt locking seat in a horizontal state.

[0022] Optionally, in the above-mentioned skirt structure, a sealing strip is provided between the first skirt and the vehicle body.

[0023] Optionally, in the above-described skirt structure, the second skirt is connected to the skirt frame and rotates around the skirt frame to switch between the open and closed states of the second skirt; and / or,

[0024] The second skirt panel is connected to the skirt panel frame via hinges.

[0025] Optionally, in the above-described skirt structure, a locking seat is provided on the skirt frame, and a skirt lock is provided on the second skirt. The skirt lock and the locking seat cooperate to open or lock the second skirt; and / or,

[0026] The skirt board frame is equipped with a locking seat, and the third skirt board is equipped with a skirt board lock. The skirt board lock and the locking seat cooperate to open or lock the third skirt board.

[0027] Optionally, in the above-mentioned skirt structure, the skirt lock includes a lock body, gears, and a locking pin;

[0028] The lock body is connected to the gear, and the gear meshes with the teeth on the lock pin. Rotating the lock body causes the gear to rotate, which in turn causes the lock pin to move.

[0029] Optionally, in the above-described skirt structure, the skirt lock further includes guide seats, which are disposed on both sides of the locking pin to allow the locking pin to move along the guide seats; and / or,

[0030] The skirt panel lock also includes a protective cover, inside which the lock body, gears, and locking pins are housed.

[0031] Optionally, in the above-described skirt structure, the third skirt is connected to the skirt frame and rotates around the skirt frame to switch between the open and closed states of the third skirt; and / or,

[0032] The third skirt panel is connected to the skirt panel frame via a third telescopic component to support the third skirt panel when it is in the open state and to tighten the third skirt panel when it is in the locked state.

[0033] The skirt structure provided by the present invention includes a first skirt, a second skirt, a third skirt, and a skirt frame. The second and third skirts are connected to the suspension frame of the maglev train through the skirt frame, and the first skirt is connected to the car body of the maglev train. This satisfies the displacement requirements between the car body and the suspension frame, between different suspension frames, and between the suspension frame and the electromagnet, thus satisfying the overall vehicle operation requirements.

[0034] Furthermore, the skirt structure provided by this invention can shield and protect electrical equipment such as electrical boxes, batteries, and electromagnets located beneath the body of the high-speed maglev train. It also reduces air resistance during train operation, solving problems such as the large area requiring protection due to the numerous under-vehicle devices in high-speed maglev vehicles. This achieves aerodynamic design for the entire vehicle, meeting the aerodynamic requirements of maglev trains and improving the overall aesthetics. Simultaneously, it provides waterproofing and dustproofing, enabling the maglev train to operate in extreme weather conditions such as rain, snow, and sandstorms. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is an overall structural diagram of the skirt structure disclosed in an embodiment of the present invention;

[0037] Figure 2 This is a structural diagram of the skirt frame disclosed in an embodiment of the present invention;

[0038] Figure 3 This is a structural diagram of the first skirt panel disclosed in an embodiment of the present invention;

[0039] Figure 4 This is a structural diagram of the second skirt plate disclosed in an embodiment of the present invention;

[0040] Figure 5 This is a structural diagram of the third skirt plate disclosed in an embodiment of the present invention;

[0041] Figure 6 This is an exploded view of the first skirt panel disclosed in an embodiment of the present invention;

[0042] Figure 7 This is an exploded view of the locking structure disclosed in an embodiment of the present invention;

[0043] Figure 8 This is a structural diagram of the first skirt panel in the open state as disclosed in an embodiment of the present invention;

[0044] Figure 9 This is an exploded view of the skirt lock disclosed in an embodiment of the present invention;

[0045] Figure 10 This is a structural diagram of the first and second skirt panels in the open state as disclosed in an embodiment of the present invention;

[0046] Figure 11 This is a structural diagram of the third skirt panel in the open state as disclosed in an embodiment of the present invention;

[0047] in:

[0048] 100 is the skirt frame; 101 is the locking seat;

[0049] 200 is the first skirt board;

[0050] 300 is the second skirt board; 301 is the ramp;

[0051] 400 is the third skirt panel; 401 is the third telescopic component;

[0052] 500 is a rubber strip;

[0053] 601 is the skirt panel mounting bracket; 602 is the fixing bracket;

[0054] 701 is a rotating plate; 702 is a first telescopic component; 703 is a second telescopic component; 704 is a skirt locking seat; 705 is an elastic component; 706 is a first positioning block; 707 is a second positioning block;

[0055] 800 is the skirt panel lock; 801 is the lock body; 802 is the gear; 803 is the locking pin; 804 is the guide seat; 805 is the protective cover. Detailed Implementation

[0056] The following will refer to the appendices in the embodiments of the present invention. Figures 1-11 The technical solutions in the embodiments of the present invention are clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without novelty are within the scope of protection of the present invention.

[0057] In the description of this invention, it should be understood that the terms "upper," "lower," "top surface," "bottom surface," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the indicated position or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0058] like Figure 1 As shown, the present invention discloses a skirt structure for a maglev train, including a first skirt 200, a second skirt 300, a third skirt 400, and a skirt frame 100; the skirt frame 100 is used to connect with the suspension frame of the maglev train, and the first skirt 200 is used to connect with the car body of the maglev train; the second skirt 300 and the third skirt 400 are disposed on the skirt frame 100, with the second skirt 300 located between the first skirt 200 and the third skirt 400.

[0059] The second skirt 300 and the third skirt 400 are connected to the suspension frame of the maglev train through the skirt frame 100, and the first skirt 200 is connected to the car body of the maglev train. This satisfies the displacement requirements between the car body and the suspension frame, between different suspension frames, and between the suspension frame and the electromagnet, thus meeting the overall vehicle operation requirements.

[0060] Furthermore, the skirt structure provided by this invention can shield and protect electrical equipment such as electrical boxes, batteries, and electromagnets located beneath the body of the high-speed maglev train. It also reduces air resistance during train operation, solving problems such as the large area requiring protection due to the numerous under-vehicle devices in high-speed maglev vehicles. This achieves aerodynamic design for the entire vehicle, meeting the aerodynamic requirements of maglev trains and improving the overall aesthetics. Simultaneously, it provides waterproofing and dustproofing, enabling the maglev train to operate in extreme weather conditions such as rain, snow, and sandstorms.

[0061] When a maglev train traverses curves with small radii or steep gradients, the car body and bogies will shift, meaning their relative positions will change. Consequently, the first skirt 200 will move relative to the second skirt 300 due to this shift, potentially causing interference and impact. Therefore, in one embodiment of the present invention, a buffer structure is provided between the first skirt 200 and the second skirt 300 to reduce or even prevent interference and impact caused by the shift.

[0062] To optimize the above technical solution, the buffer structure can be configured as ramp 301, or it can be a gap structure along the height and width directions of the maglev train. (See reference...) Figure 1 In the direction of the middle, a ramp 301 is provided on the top of the second skirt 300, and a certain gap is reserved between the height direction and width direction of the maglev train and the lower edge of the first skirt 200, which can meet the displacement requirements between the car body and the suspension frame.

[0063] Furthermore, rubber strips 500 are provided at at least one of the following locations: the connection between the first skirt 200 and the second skirt 300, between each pair of adjacent second skirts 300, between each pair of adjacent third skirts 400, between the second skirt 300 and the third skirt 400, and at the connection between the third skirt 400 and the electromagnet of the maglev train, in order to reduce interference impact.

[0064] For details, please refer to Figure 1 In the direction of the suspension frame, rubber strips 500 can be installed at the lower end of the first skirt 200 and the upper end of the second skirt 300 to reduce interference and impact between the car body and the suspension frame, thus meeting the displacement requirements between the car body and the suspension frame. Rubber strips 500 are also installed on the left and right sides of the second skirt 300 and the third skirt 400. These rubber strips 500 can be compressed during suspension frame displacement, meeting the displacement requirements for rotation between the suspension frames. A rubber strip 500 is installed at the lower end of the third skirt 400 to meet the displacement requirements between the third skirt 400 and the electromagnet of the maglev train. Rubber strips 500 are installed at both the upper and lower ends of the skirt frame 100 so that after the second skirt 300 and the third skirt 400 are installed with the skirt frame 100, the rubber strips 500 are in a compressed state, preventing abnormal noises during the operation of the maglev train. It should be noted that the rubber strips 500 can be installed into corresponding positions via sliding grooves.

[0065] In one embodiment of the present invention, a skirt mounting seat 601 and a fixing seat 602 are provided on the vehicle body. The first skirt 200 is connected to the skirt mounting seat 601 and can rotate around the skirt mounting seat 601, thereby realizing the switching between the open state and the locked state of the first skirt 200. Figure 6As shown, pin grooves are machined in sections on the skirt mounting base 601 and the first skirt 200. When the two are assembled, pins are inserted so that the first skirt 200 can rotate around the pins.

[0066] The locking structure ensures that the first skirt 200 remains open after rotating open around the skirt mounting base 601, facilitating the maintenance of the maglev train's internal equipment. When the first skirt 200 is in the locked state, the locking structure keeps the first skirt 200 taut, preventing it from loosening or opening due to vibration or other reasons during train operation.

[0067] Specifically, the locking structure includes a rotating plate 701, a first telescopic member 702, a second telescopic member 703, and a skirt locking seat 704. The first end of the rotating plate 701 is connected to the fixed seat 602 and rotates around the fixed seat 602. The second end of the rotating plate 701 is connected to the fixed seat 602 through the first telescopic member 702. One end of the skirt locking seat 704 is connected to the third end of the rotating plate 701, and the other end cooperates with the locking seat located on the first skirt 200 to tighten the first skirt 200 when the first skirt 200 is in the locked state. One end of the second telescopic member 703 is connected to the first skirt 200, and the other end is connected to the fixed seat 602.

[0068] When the first skirt panel 200 is in the locked state, on the one hand, the skirt panel locking seat 704 cooperates with the locking seat on the first skirt panel 200. The locking seat can be a locking pin, etc. The first skirt panel 200 is connected and fixed to the skirt panel locking seat 704, keeping the first skirt panel 200 in the locked state. At the same time, the second telescopic member 703 tightens the first skirt panel 200, maintaining the locked state of the first skirt panel 200 through the second telescopic member 703. In this way, even if the cooperation between the skirt panel locking seat 704 and the locking seat fails, the second telescopic member 703 can maintain the locked state of the first skirt panel 200, greatly improving the safety of the maglev train.

[0069] Furthermore, the skirt locking seat 704 includes a mounting seat and a skirt locking seat body. The skirt locking seat body is threaded into the mounting seat, and the position of the skirt locking seat body on the mounting seat can be adjusted in the vehicle width direction using the threads to ensure that the skirt locking seat 704 can cooperate with the locking seat.

[0070] It should be noted that the first telescopic component 702, the second telescopic component 703, and the third telescopic component 401 can be gas springs. A gas spring consists of a piston rod, a piston, a sealing guide sleeve, a filler, a pressure cylinder, and a connector. The gas spring can utilize the pressure difference between the two sides of the piston to realize the movement of the piston rod.

[0071] The first skirt panel 200 can be opened manually. First, disengage the skirt panel locking seat 704 from the locking seat. After unlocking, manually flip the first skirt panel 200. Once the flipping angle exceeds the locking stop point of the second telescopic member 703, the first skirt panel 200 can remain open. Simultaneously, because the engagement between the skirt panel locking seat 704 and the locking seat is released, the pressure of the first skirt panel 200 on the skirt panel locking seat 704 disappears. The skirt panel locking seat 704 moves in the direction in which the first skirt panel 200 opens, causing the rotating plate 701 to rotate, thus changing the length of the first telescopic member 702.

[0072] To optimize the above technical solution, when one end of the skirt locking seat 704 is hinged to the third end of the rotating plate 701, an elastic element 705 is provided to ensure that the skirt locking seat 704 is in a horizontal position. One end of the elastic element 705 is connected to the skirt locking seat 704, and the other end is connected to the second telescopic element 703 to tighten the skirt locking seat 704.

[0073] Furthermore, such as Figure 7 As shown, a second positioning block 707 is provided on the rotating plate 701. The second positioning block 707 is located above the skirt locking seat 704 and is fixed on the rotating plate 701 to prevent the skirt locking seat 704 from rotating around the rotating plate 701 under the tension of the elastic member 705, so as to keep the skirt locking seat 704 in a horizontal state.

[0074] like Figure 7 As shown, a first positioning block 706 is also provided on the rotating plate 701. The first positioning block 706 is used to limit the angle of rotation of the rotating plate 701 around the fixed seat 602, and can limit the rotation plate 701 to prevent the elongation of the first telescopic member 702 from exceeding its specified range.

[0075] To improve the waterproof performance of the skirt structure, a sealing strip is installed between the first skirt 200 and the car body to prevent water from entering the maglev train through the gap between the first skirt 200 and the car body.

[0076] The first skirt panel 200, the second skirt panel 300, and the third skirt panel 400 can all be opened or locked. In one embodiment of the invention, the second skirt panel 300 is connected to the skirt panel frame 100 and rotates around the skirt panel frame 100 to switch between the open and locked states of the second skirt panel 300. Figure 10 As shown, the lower end of the second skirt panel 300 is provided with a hook-shaped groove, which can cooperate with the skirt panel frame 100 to rotate and fix the second skirt panel 300.

[0077] Similarly, the third skirt panel 400 is connected to the skirt panel frame 100 and rotates around the skirt panel frame 100 to switch between the open and locked states of the third skirt panel 400. The upper end of the third skirt panel 400 is provided with a hook-shaped groove, which can cooperate with the skirt panel frame 100 to rotate and fix the third skirt panel 400.

[0078] Furthermore, a hinge is provided, and the second skirt panel 300 is connected to the skirt panel frame 100 via the hinge. The hinge can limit the second skirt panel 300 when it is in the open state, preventing it from falling off. When the hinge is opened, the second skirt panel 300 can be directly removed from the skirt panel frame 100 at a certain angle, facilitating the maintenance of internal equipment.

[0079] To optimize the above solution, a locking seat 101 is provided on the skirt frame 100, and a skirt lock 800 is provided on the second skirt 300. The skirt lock 800 and the locking seat 101 cooperate to open or lock the second skirt 300. Similarly, the third skirt 400 can also be opened and locked by the skirt lock 800 and the locking seat 101.

[0080] Specifically, such as Figure 9 As shown, the skirt lock 800 includes a lock body 801, a gear 802, and a locking pin 803. The lock body 801 and the gear 802 are connected. By rotating the lock body 801, the gear 802 is driven to rotate. The gear 802 engages with the teeth on the locking pin 803, causing the locking pin 803 to move. Thus, the rotation of the lock body 801 is converted into the left and right movement of the locking pin 803.

[0081] The second skirt 300 and the third skirt 400 use a skirt lock 800 controlled by a gear 802 to extend and retract the locking pin 803. This lock will not fail due to vibration of the maglev train. Even if the skirt lock 800 of the second skirt 300 fails, the upper part of the second skirt 300 will lock the lower part of the first skirt 200 and will not fall off.

[0082] Furthermore, a protective cover 805 is provided on the outside of the lock body 801, gear 802 and locking pin 803. The presence of the protective cover 805 can prevent foreign objects and dust from entering the skirt lock 800 and affecting its function.

[0083] To ensure that the movement of the locking pin 803 does not deviate from the preset trajectory and to achieve the engagement between the locking pin 803 and the locking seat 101 on the skirt frame 100, guide seats 804 are provided on both sides of the locking pin 803, and the locking pin 803 moves along the guide seats 804. It should be noted that the guide seats 804 can be located on either the inner or outer side of the protective cover 805.

[0084] A third telescopic member 401 is provided between the third skirt panel 400 and the skirt panel frame 100. When the third skirt panel 400 is in the open state, the third telescopic member 401 supports the third skirt panel 400. When the third skirt panel 400 is in the locked state, the third telescopic member 401 tightens the third skirt panel 400. In this way, even if the skirt panel lock 800 of the third skirt panel 400 fails, the third telescopic member 401 will tighten the third skirt panel 400 to keep the third skirt panel 400 in the locked state.

[0085] It should be noted that the second skirt panel 300 can only be opened after the first skirt panel 200 is opened. After opening the first skirt panel 200, the skirt panel lock 800 on the second skirt panel 300 can be opened by flipping it downwards. After opening the hinge and removing the second skirt panel 300, the skirt panel lock 800 on the third skirt panel 400 can be opened. After unlocking, the third skirt panel 400 can be manually flipped upwards to open. After exceeding the locking stop point of the third telescopic member 401, the third skirt panel 400 can remain open, which can improve the efficiency and safety of component maintenance.

[0086] It should be noted that the above-mentioned elastic element 705 can be a spring, torsion spring or other structure with elastic function. In the embodiment of the present invention, the above-mentioned elastic element 705 is a spring.

[0087] It should be noted that the skirt structure provided by this invention can be used in the field of high-speed maglev train technology or other fields. Other fields refer to any field other than the field of high-speed maglev train technology. The above are merely examples and do not limit the application areas of the skirt structure provided by this invention.

[0088] 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.

[0089] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. 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 the invention. Therefore, the invention 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.

[0090] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," 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 the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0091] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A skirt structure for a maglev train, characterized in that, It includes a first skirt panel (200), a second skirt panel (300), a third skirt panel (400), and a skirt panel frame (100); The skirt frame (100) is used to connect with the suspension frame of the maglev train, and the first skirt (200) is used to connect with the car body of the maglev train. The second skirt board (300) and the third skirt board (400) are disposed on the skirt board frame (100), with the second skirt board (300) located between the first skirt board (200) and the third skirt board (400).

2. The skirt structure as described in claim 1, characterized in that, A buffer structure is provided between the first skirt board (200) and the second skirt board (300).

3. The skirt structure as described in claim 2, characterized in that, The buffer structure is a ramp (301), or a gap structure along the height and width directions of the maglev train.

4. The skirt structure as described in any one of claims 1-3, characterized in that, A rubber strip (500) is provided at at least one of the following locations: the connection between the first skirt board (200) and the second skirt board (300), between every two adjacent second skirt boards (300), between every two adjacent third skirt boards (400), between the second skirt board (300) and the third skirt board (400), and at the connection between the third skirt board (400) and the electromagnet of the maglev train.

5. The skirt structure as described in claim 1, characterized in that, The vehicle body is provided with a skirt mounting bracket (601) and a fixing bracket (602); The first skirt board (200) is connected to the skirt board mounting base (601) and rotates around the skirt board mounting base (601) to switch between the open state and the locked state of the first skirt board (200); The first skirt panel (200) is connected to the fixed seat (602) through a locking structure to support the first skirt panel (200) when it is in the open state and to tighten the first skirt panel (200) when it is in the locked state.

6. The skirt structure as described in claim 5, characterized in that, The locking structure includes a rotating plate (701), a first telescopic member (702), a second telescopic member (703), and a skirt locking seat (704); The first end of the rotating plate (701) is connected to the fixed base (602) and rotates around the fixed base (602); the second end of the rotating plate (701) is connected to the fixed base (602) through the first telescopic member (702); One end of the skirt locking seat (704) is connected to the third end of the rotating plate (701), and the other end is engaged with the locking seat located on the first skirt (200) to tighten the first skirt (200) when the first skirt (200) is in the locked state. One end of the second telescopic member (703) is connected to the first skirt panel (200), and the other end is connected to the fixed base (602).

7. The skirt structure as described in claim 6, characterized in that, It also includes an elastic element (705), one end of the skirt locking seat (704) is hinged to the third end of the rotating plate (701), one end of the elastic element (705) is connected to the skirt locking seat (704), and the other end is connected to the second telescopic element (703); and / or, A first positioning block (706) is provided on the rotating plate (701) to limit the angle of rotation of the rotating plate (701) around the fixed base (602); and / or, The rotating plate (701) is provided with a second positioning block (707) to keep the skirt locking seat (704) in a horizontal state.

8. The skirt structure as described in claim 1, characterized in that, A sealing strip is provided between the first skirt panel (200) and the vehicle body.

9. The skirt structure as described in claim 1, characterized in that, The second skirt panel (300) is connected to the skirt panel frame (100) and rotates around the skirt panel frame (100) to switch between the open and closed states of the second skirt panel (300); and / or, The second skirt panel (300) is connected to the skirt panel frame (100) via a hinge.

10. The skirt structure as described in claim 1, characterized in that, A locking seat (101) is provided on the skirt frame (100), and a skirt lock (800) is provided on the second skirt (300). The skirt lock (800) and the locking seat (101) cooperate to open or lock the second skirt (300); and / or, The skirt frame (100) is provided with a locking seat (101), and the third skirt (400) is provided with a skirt lock (800). The skirt lock (800) and the locking seat (101) cooperate to open or lock the third skirt (400).

11. The skirt structure as described in claim 10, characterized in that, The skirt lock (800) includes a lock body (801), a gear (802), and a locking pin (803); The lock body (801) and the gear (802) are connected. The gear (802) engages with the teeth on the locking pin (803). Rotating the lock body (801) drives the gear (802) to rotate, thereby driving the locking pin (803) to move.

12. The skirt structure as described in claim 11, characterized in that, The skirt lock (800) further includes guide seats (804), which are disposed on both sides of the locking pin (803) to allow the locking pin (803) to move along the guide seats (804); and / or, The skirt lock (800) also includes a protective cover (805), and the lock body (801), the gear (802) and the locking pin (803) are disposed inside the protective cover (805).

13. The skirt structure as described in claim 1, characterized in that, The third skirt panel (400) is connected to the skirt panel frame (100) and rotates around the skirt panel frame (100) to switch between the open and closed states of the third skirt panel (400); and / or, The third skirt panel (400) is connected to the skirt panel frame (100) via a third telescopic member (401) to support the third skirt panel (400) when it is in the open state and to tighten the third skirt panel (400) when it is in the locked state.

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