Expandable rain eave structure

Abstract

The utility model discloses an extensible rain eave structure which comprises a basic rain eave, a first rain drainage cavity and a second rain drainage cavity. The expanded rain eaves are provided with second rain drainage cavities, and the multiple expanded rain eaves are detachably connected to the basic rain eaves in the width direction; when the plurality of extended rain eaves are connected with the basic rain eaves, the bracket is used for connecting the side wall of the cab with the extended rain eaves to form a triangular structure. According to the extensible rain eave structure, the extensible rain eave can be timely disassembled and assembled according to weather conditions at any time, dynamic adjustment of the size of the rain eave is achieved, the extensible rain eave structure is suitable for different boundary requirements and different rainfall, operation is easy and convenient, the structure is stable and reliable, the diversity of rain eave configuration is improved, and the comfort degree of drivers and passengers is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rain shielding equipment, and more specifically to an expandable rain eave structure. Background Art

[0002] The driver's cab is a key area in the vehicle for the driver and passengers to operate and control the train operation. In rainy weather, rain canopies are set up to prevent rainwater from flowing directly through the driver's cab and affecting the driver's and passengers' line of sight, thereby ensuring the safety of vehicle driving.

[0003] In the related art, the driver's cab rain canopy of vehicles such as locomotives or engineering vehicles is generally welded above the driver's cab side windows with sheet metal bending parts. The rain canopy can prevent rainwater from flowing directly through the side windows and affecting the driver's and passengers' sight. When working in rainy days, the driver and passengers lean out of the side windows for observation, and the rain canopy can play a certain shielding role.

[0004] However, due to the influence of the limit, the rain canopy on the side of the driver's cab can usually only be designed to be small in size. The narrow rain canopy cannot adapt to severe weather with heavy rainfall, affecting the comfort of the driver and passengers. If a larger rain canopy is configured, it will be difficult to meet the limit requirements under certain line conditions. The rain canopy designed statically as described above cannot be applied to different boundary requirements and different rainfall amounts.

[0005] In summary, how to provide a rain eave suitable for different boundary requirements and different rainfall amounts is a problem that needs to be urgently solved by those skilled in the art. Utility Model Content

[0006] In view of this, the purpose of the utility model is to provide an expandable rain eaves structure, which can be disassembled and assembled to expand the rain eaves at any time according to weather conditions, so as to realize dynamic adjustment of the size of the rain eaves, is suitable for different boundary requirements and different rainfall amounts, is simple and convenient to operate, has a stable and reliable structure, improves the diversity of rain eaves configuration, and improves the comfort of drivers and passengers.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] An expandable rain canopy structure, comprising:

[0009] A basic rain canopy, having a first row of rain chambers and used for connection with the side wall of the driver's cab;

[0010] An extended rain eaves has a second row of rain chambers, and a plurality of the extended rain eaves are detachably connected in the width direction of the basic rain eaves;

[0011] The bracket is used to connect the side wall of the driver's cab and the extended rain eaves to form a triangular structure when a plurality of the extended rain eaves are connected to the basic rain eaves.

[0012] Preferably, a sealing layer is provided on the sides of both the base rain eave and the bracket, and the sealing layer is used to fit with the side wall of the driver's cab to prevent rainwater from entering.

[0013] Preferably, the basic rain eaves includes a first base plate and a first baffle and a second baffle respectively arranged on both sides thereof, the first base plate, the first baffle and the second baffle together form the first rain row cavity, and the sealing layer is provided on the side of the first baffle away from the second baffle.

[0014] Preferably, the extended rain eaves includes a second base plate and a third baffle and a fourth baffle respectively arranged on both sides thereof, the second base plate, the third baffle and the fourth baffle together form the second row of rain chambers, and the third baffle is provided with a connecting portion for connecting with the second baffle.

[0015] Preferably, the connecting portion is a groove structure extending outward from the side of the third baffle, and the groove structure has a downward opening for buckling on the second baffle.

[0016] Preferably, the groove body width of the groove structure is greater than the width of the second baffle plate, and the groove structure is connected to the second baffle plate via a fastener.

[0017] Preferably, the top openings of the first rain row cavity and the second rain row cavity are both facing upward to receive rainwater, and the sides or bottoms of the first rain row cavity and the second rain row cavity are provided with at least one rain discharge port.

[0018] Preferably, the basic rain canopy further includes a first blocking plate, the first blocking plate is used to block one side of the first rain drainage cavity, and the other side of the first rain drainage cavity is used to drain rainwater;

[0019] The extended rain eaves also include a second blocking plate, which is used to block one side of the second row of rain chambers, and the other side of the second row of rain chambers is used to drain rainwater.

[0020] Preferably, the bracket and the second base plate, and the third baffle and the second baffle are connected by bolts.

[0021] Preferably, the bracket includes an integrally formed support portion and mounting portions on both sides thereof, and an angle between the mounting portion and the support portion is an obtuse angle.

[0022] The expandable rain eaves structure provided by the utility model comprises a basic rain eaves, an extended rain eaves and a bracket, wherein the basic rain eaves has a first row of rain chambers and is used to connect with the side wall of the driver's cab. For weather conditions with less rainfall, rainwater can be collected and discharged through the first row of rain chambers; the extended rain eaves has a second drainage chamber, and a plurality of extended rain eaves can be detachably connected in the width direction of the basic rain eaves to cope with weather conditions with heavy rainfall, and rainwater can be collected and discharged through the first row of rain chambers and the second row of rain chambers; further, when the extended rain eaves are needed, when a plurality of extended rain eaves are connected to the basic rain eaves, the side wall of the driver's cab and the extended rain eaves are connected through the bracket, and the connection between the extended rain eaves and the basic rain eaves is combined to form a triangular structure to ensure the stability of the overall structure of the expandable rain eaves. The above-mentioned expandable rain eaves structure can be disassembled and assembled at any time according to the weather conditions to realize the dynamic adjustment of the size of the rain eaves, the operation is simple and convenient, the structure is stable and reliable, the diversity of the rain eaves configuration is improved, and the comfort of the driver and passengers is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0024] Figure 1 A schematic diagram of the structure of the expandable rain eave structure provided by the utility model;

[0025] Figure 2 A schematic diagram of a use state of the expandable rain eave structure provided by the utility model;

[0026] Figure 3 A schematic diagram of another use state of the expandable rain eave structure provided by the utility model;

[0027] Figure 4 A schematic diagram of the structure of the basic rain eaves provided by the utility model;

[0028] Figure 5 A schematic diagram of the structure of the extended rain eaves provided by the utility model;

[0029] Figure 6 This is a schematic diagram of the structure of the bracket provided by the utility model.

[0030] Figure 1-Figure 6 , the reference numerals include:

[0031] 1-basic rain canopy; 2-extended rain canopy; 3-bracket; 4-side wall of the driver's cab;

[0032] 11-first blocking plate; 12-first baffle; 13-first bottom plate; 14-second baffle; 21-second blocking plate; 22-third baffle; 23-second bottom plate; 24-fourth baffle; 31-supporting part; 32-installing part;

[0033] 101-first row of rain chambers; 201-second row of rain chambers. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] The core of the utility model is to provide an expandable rain eaves structure, which can be disassembled and assembled to expand the rain eaves at any time according to weather conditions, so as to realize dynamic adjustment of the size of the rain eaves. The operation is simple and convenient, the structure is stable and reliable, the diversity of the rain eaves configuration is improved, and the comfort of the driver and passengers is improved.

[0036] The expandable rain canopy structure provided by the utility model comprises a basic rain canopy 1, an extended rain canopy 2 and a bracket 3, which is applied to the driver's cab of a vehicle to shield rain, so as to prevent rainwater from flowing through the side wall 4 of the driver's cab and affecting the driver's sight. Figure 1-Figure 3 .

[0037] The vehicle can be a rail engineering vehicle, an engineering transport vehicle, or other vehicle that requires rain canopies.

[0038] The basic rain canopy 1 is a rainproof structure originally connected to the side wall 4 of the driver's cab. The basic rain canopy 1 has a first row of rain chambers, through which rainwater is collected and discharged, and is suitable for working environments with less rainfall.

[0039] The extended rain eaves 2 have a second row of rain chambers 201, and a plurality of extended rain eaves 2 are detachably connected in the width direction of the basic rain eaves 1 to dynamically adjust the size of the entire rain eaves structure, which is suitable for different boundary requirements and different rainfall sizes. Figure 4 The front and rear directions can also be Figure 2 The specific orientation in the width direction is obtained by connecting the extended rain eaves 2 and the basic rain eaves 1.

[0040] When the rain is heavy, several extended rain eaves 2 are installed on the basic rain eaves 1. The extended rain eaves 2 can be one, two or more. The rainwater is discharged through the first row of rain chambers 101 and the second row of rain chambers 201 to provide a shielding effect, thereby preventing the rainwater from directly flowing through the driver's cab side wall 4 and affecting the driver's sight. When required by the limit, one, two or more extended rain eaves 2 can be removed to make the overall rain eaves structure smaller.

[0041] It should be noted that the plurality of extended rain eaves 2 are also detachably connected, and the specific method is not limited, as long as it is convenient for installation and disassembly.

[0042] Optionally, both the first row of rain chambers 101 and the second row of rain chambers 201 are chambers opening upward, which are used to receive rainwater and discharge it after receiving the rainwater. The discharge method can be through drain outlets, drain pipes, etc. The installation position can be designed according to actual needs without affecting the driver's line of sight and getting the people in the driver's cab wet.

[0043] Optionally, the sizes and shapes of the first row of rain chambers 101 and the second row of rain chambers 201 can be flexibly designed according to actual needs without any limitation.

[0044] When it is necessary to expand the eaves structure, several extended eaves 2 are connected to the basic eaves 1. To ensure the stability and reliability of the larger eaves structure, the driver's cab side wall 4 and the extended eaves 2 are connected through the bracket 3, so that the bracket 3, the driver's cab side wall 4, the extended eaves 2, and the basic eaves 1 form a triangular structure as a whole to ensure the stability and reliability of the structure.

[0045] When the size of the rain eaves structure needs to be reduced, all or one or more of the extended rain eaves 2 can be removed as needed, which is simple and convenient to operate with high flexibility.

[0046] Optionally, the connection between the plurality of extended rain eaves 2 and the basic rain eaves 1 may be by fasteners or by snap-on connection, which is easy to operate and disassemble.

[0047] It should be noted that no matter the bracket 3 is connected to the side wall 4 of the driver's cab, or the basic rain canopy 1 is connected to the side wall 4 of the driver's cab, if fasteners such as bolts are used, the holes on the side wall 4 of the driver's cab must be blind holes to prevent rainwater from entering the driver's cab and ensure the sealing of the driver's cab.

[0048] The above-mentioned expandable eaves structure includes a basic eaves 1, an extended eaves 2 and a bracket 3, wherein the basic eaves 1 has a first row of rain chambers 101 and is used to be connected to the side wall 4 of the driver's cab. For weather conditions with less rainfall, rainwater can be gathered and discharged through the first row of rain chambers 101; the extended eaves 2 has a second drainage chamber, and a plurality of extended eaves 2 are detachably connected in the width direction of the basic eaves 1 to cope with weather conditions with heavier rainfall, and rainwater is gathered and discharged through the first row of rain chambers 101 and the second row of rain chambers 201; further, in the case where the extended eaves 2 need to be used, when a plurality of extended eaves 2 are connected to the basic eaves 1, the side wall 4 of the driver's cab and the extended eaves 2 are connected by the bracket 3, and the connection between the extended eaves 2 and the basic eaves 1 is combined to form a triangular structure to ensure the stability of the overall structure of the expandable eaves. The above-mentioned expandable rain eaves structure can be disassembled and assembled to expand the rain eaves at any time according to weather conditions, so as to realize dynamic adjustment of the size of the rain eaves. It is suitable for different boundary requirements and different rainfall amounts. It is simple and convenient to operate, and the structure is stable and reliable. It improves the diversity of the rain eaves configuration and improves the comfort of drivers and passengers.

[0049] On the basis of the above-mentioned embodiment, a sealing layer is provided on the sides of both the basic rain eave 1 and the bracket 3, and the sealing layer is used to fit with the side wall 4 of the driver's cab to prevent rainwater from entering.

[0050] A sealing layer is provided on the sides of both the base rain canopy 1 and the bracket 3. The side here refers to the side in contact with the side wall 4 of the driver's cab. The sealing layer is provided to prevent rainwater from entering the side wall and causing corrosion.

[0051] Optionally, the sealing layer may be a sealant or a sealing gasket, as long as a sealing effect can be achieved.

[0052] When the sealing layer is a sealant, only the basic rain eaves 1 is used, and the sealant is used to seal between the basic rain eaves 1 and the driver's cab side wall 4 to ensure the sealing of the connection between the basic rain eaves 1 and the driver's side wall 4, so as to prevent rainwater from invading the connection hole on the driver's side wall 4 and causing corrosion; in addition, please refer to Figure 3 When only the basic rain canopy 1 is used, the connection hole on the driver's side wall 4 for connecting the bracket 3 and the connection hole on the basic rain canopy 1 for connecting with the extended rain canopy 2 also need to be blocked, which can be achieved by bolts to prevent water from entering the holes and causing corrosion.

[0053] Please refer to Figure 1 , Figure 2 When the basic rain canopy 1 and the extended rain canopy 2 are used at the same time, sealant is used around the connection between the basic rain canopy 1, the bracket 3, and the driver's cab side wall 4 to prevent rainwater from staying in the interlayer of the connection for a long time and causing corrosion.

[0054] Based on any of the above embodiments, the basic rain eaves 1 includes a first base plate 13 and a first baffle 12 and a second baffle 14 respectively arranged on both sides thereof. The first base plate 13, the first baffle 12, and the second baffle 14 together form a first rain row cavity 101, and a sealing layer is provided on the side of the first baffle 12 away from the second baffle 14.

[0055] Please refer to Figure 2 , Figure 3 , Figure 4 The first bottom plate 13 is connected to the first baffle 12 and the second baffle 14 on both sides thereof to form a first row rain chamber 101. The first baffle 12 and the second baffle 14 both have a certain height to collect rainwater. The specific height can be flexibly designed according to actual needs.

[0056] A sealing layer is provided on the side of the first baffle plate 12 away from the second baffle plate 14, that is, the side close to the driver's cab side wall 4, for ensuring the sealing effect between the driver's cab side wall 4 and the first baffle plate 12 to avoid rainwater corrosion.

[0057] In addition, the first baffle 12 is also provided with mounting holes for connecting to the side wall 4 of the driver's cab. The positions and number of the mounting holes need to be arranged according to the required side window length, the overall weight of the rain canopy, etc., and are not restricted.

[0058] In this embodiment, the first baffle 12 and the second baffle 14 may also be structures with an arc, so as to increase the size of the first rain drainage chamber 101 and ensure the drainage effect.

[0059] In this embodiment, the first row of rain chambers 101 formed between the first baffle plate 12, the second baffle plate 14 and the first bottom plate 13 can drain water on both sides or on one side, and can be flexibly changed according to actual needs.

[0060] Optionally, the first baffle plate 12, the second baffle plate 14 and the first bottom plate 13 may be welded into one body, or may be formed by bending a plate.

[0061] Based on any of the above embodiments, the extended rain eaves 2 includes a second base plate 23 and a third baffle 22 and a fourth baffle 24 respectively arranged on both sides thereof. The second base plate 23, the third baffle 22, and the fourth baffle 24 together form a second row of rain chamber 201, and the third baffle 22 is provided with a connecting portion for connecting to the second baffle 14.

[0062] Please refer to Figure 2 , Figure 4 , Figure 5The extended rain eaves 2 includes a second bottom plate 23, a third baffle 22 and a fourth baffle 24, which together form a second row of rain chambers 201. The second row of rain chambers 201 can drain water from both sides or from one side. The heights of the third baffle 22 and the fourth baffle 24 are preferably consistent with the heights of the first baffle 12 and the second baffle 14, so as to facilitate the coordinated installation of the extended rain eaves 2 and the basic rain eaves 1.

[0063] In this embodiment, both the third baffle 22 and the fourth baffle 24 may also be configured to have an arc structure to increase the size of the second rain chamber 201 and ensure the drainage effect.

[0064] Optionally, the second bottom plate 23, the third baffle plate 22 and the fourth baffle plate 24 may be welded into one body, or may be formed by bending a plate.

[0065] The third baffle plate 22 is provided with a connection portion connected to the second baffle plate 14 to achieve the connection between the basic rain eaves 1 and the extended rain eaves 2. The specific connection or suspension between the third baffle plate 22 and the second baffle plate 14 by snap connection or fasteners is not limited here, and it is convenient to install and disassemble the extended rain eaves 2.

[0066] On the basis of any of the above embodiments, the connecting portion is a groove structure extending outward from the side of the third baffle plate 22 , and the groove structure has a downward opening for buckling on the second baffle plate 14 .

[0067] Please refer to Figure 2 , Figure 4 , Figure 5 The connecting portion is a groove structure extending outward from the side of the third baffle plate 22. The groove structure is preferably a U-shaped groove. The U-shaped groove has a downward opening and is buckled on the second baffle plate 14 to cover the gap between the second baffle plate 14 and the connecting portion to prevent rainwater from intruding to ensure sealing.

[0068] In order to ensure the tightness of the U-shaped groove on the second baffle 14, connecting bolts can be passed through the U-shaped groove and the second baffle 14 to ensure the tightness of the connection between the basic rain eaves 1 and the extended rain eaves 2, and ensure the reliability of the overall rain eaves structure.

[0069] Preferably, the connecting portion and the third baffle 22 are an integrated structure and are integrally formed to ensure structural reliability.

[0070] On the basis of any of the above embodiments, the groove body width of the groove structure is greater than the width of the second baffle 14, and the groove structure is connected to the second baffle 14 via a fastener.

[0071] Please refer to Figure 2 , Figure 4 , Figure 5The width of the trough structure is set to be larger than the width of the second baffle 14 to reserve a certain assembly gap for easy assembly, and is adjusted with fasteners and adjustment gaskets to ensure the stability of the connection between the trough structure and the second baffle 14, that is, to ensure the stability of the connection between the third baffle 22 and the second baffle 14, and to ensure the stability of the connection between the basic rain eaves 1 and the extended rain eaves 2.

[0072] Based on any of the above embodiments, the top openings of the first row rain chamber 101 and the second row rain chamber 201 are both facing upward to receive rainwater, and the first row rain chamber 101 and the second row rain chamber 201 have at least one rain outlet on their sides or bottoms.

[0073] In this embodiment, at least one rain outlet is provided on the side or bottom of both the first drainage cavity 101 and the second drainage cavity 201. The side here refers to the left and right sides along the length direction of the first bottom plate 13 and the second bottom plate 23. The length direction here also refers to the left and right sides along the length direction of the first bottom plate 13 and the second bottom plate 23. Figure 4 , Figure 5 left and right direction.

[0074] Optionally, a drainage outlet may be provided at the bottom of the drainage cavity and a drainage pipe may be added to ensure the drainage effect of rainwater.

[0075] On the basis of any of the above embodiments, the basic rain eave 1 further includes a first blocking plate 11, the first blocking plate 11 is used to block one side of the first rain cavity 101, and the other side of the first rain cavity 101 is used to drain rainwater;

[0076] The extended rain eaves 2 further comprises a second blocking plate 21, which is used to block one side of the second row rain cavity 201, and the other side of the second row rain cavity 201 is used to drain rainwater.

[0077] Please refer to Figure 2-Figure 5 The basic rain canopy 1 and the extended rain canopy 2 are provided with a blocking plate on only one side, and the other side is an open structure, which is a rain outlet. Rainwater falls on the first bottom plate 13 and the second bottom plate 23 and is collected and discharged from the open structure side. The drainage method is open side drainage because the other side of the side window of the driver's cab of the rail vehicle is close to the entrance door of the driver's cab. If the rain canopy is drained from both sides, the falling rainwater may splash the people entering and leaving the driver's cab.

[0078] On the basis of any of the above embodiments, the bracket 3 and the second base plate 23 , and the third baffle plate 22 and the second baffle plate 14 are connected by bolts.

[0079] Please refer to Figure 2-Figure 5 By means of bolt connection, the size of the rain canopy structure can be adjusted simply and effectively, and the operation is convenient. It is convenient to disassemble and assemble the extended rain canopy 2 at any time according to weather conditions, which is convenient for inspection and maintenance and improves the comfort of drivers and passengers.

[0080] It should be noted that the bracket 3 and the driver's cab side wall 4, and the first baffle 12 and the driver's cab side wall 4 are also connected by bolts to ensure the consistency of the installation interface of the rain eaves to the driver's cab side wall, which is conducive to modular design. The rain eaves 2 and bracket 3 can be added or removed as needed.

[0081] On the basis of any of the above embodiments, the bracket 3 includes an integrally formed support portion 31 and mounting portions 32 on both sides thereof, and the included angle between the mounting portion 32 and the support portion 31 is an obtuse angle.

[0082] Please refer to Figure 1 Two brackets 3 are provided along the length direction of the extended rain eaves 2 to connect the extended rain eaves 2 and the side wall 4 of the driver's cab.

[0083] Please refer to Figure 6 , Figure 2 , Figure 5 The bracket 3 includes an integrally formed support portion 31 and mounting portions 32 arranged on both sides thereof. Both mounting portions 32 are provided with connecting holes, one of which is used to be connected to the driver's cab side wall 4 through bolts, and the other of which is used to be connected to the second bottom plate 23 through bolts.

[0084] If two extended rain eaves 2 are provided, the number of brackets 3 can be increased to respectively connect the second bottom plates 23 of the two extended rain eaves 2 and the side wall 4 of the driver's cab; or the number of brackets 3 can be kept constant, so that the brackets 3 are connected to the second bottom plate 23 of the outermost extended rain eaves 2.

[0085] In addition, the angle between the mounting portion 32 and the supporting portion 31 is an obtuse angle, so as to ensure a better supporting effect and ensure the stability and reliability of the overall rain eaves structure.

[0086] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0087] The above is a detailed introduction to an expandable rain eave structure provided by the utility model. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiment is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. An expandable rain eave structure, characterized in that: include: A basic rain canopy (1) having a first row of rain chambers (101) and being used to be connected to a side wall (4) of a driver's cab; An extended rain eave (2) having a second row of rain chambers (201), wherein a plurality of the extended rain eaves (2) are detachably connected in the width direction of the basic rain eave (1); A bracket (3), when a plurality of the extended rain eaves (2) are connected to the basic rain eaves (1), the bracket (3) is used to connect the driver's cab side wall (4) and the extended rain eaves (2) to form a triangular structure.

2. The expandable rain eave structure according to claim 1, characterized in that: The sides of both the basic rain eave (1) and the bracket (3) are provided with a sealing layer, and the sealing layer is used to fit with the side wall (4) of the driver's cab to prevent rainwater from entering.

3. The expandable rain eave structure according to claim 2, characterized in that: The basic rain eave (1) comprises a first base plate (13) and a first baffle (12) and a second baffle (14) respectively arranged on two sides thereof; the first base plate (13), the first baffle (12) and the second baffle (14) together form the first rain drainage cavity (101); and the sealing layer is provided on a side of the first baffle (12) away from the second baffle (14).

4. The expandable rain eave structure according to claim 3, characterized in that: The extended rain eave (2) comprises a second bottom plate (23) and a third baffle (22) and a fourth baffle (24) respectively arranged on two sides thereof; the second bottom plate (23), the third baffle (22) and the fourth baffle (24) together form the second row rain cavity (201); the third baffle (22) is provided with a connection portion for connecting to the second baffle (14).

5. The expandable rain eave structure according to claim 4, characterized in that: The connecting portion is a groove-like structure extending outward from the side of the third baffle plate (22), and the groove-like structure has a downward opening and is used for buckling onto the second baffle plate (14).

6. The expandable rain eave structure according to claim 5, characterized in that: The groove body width of the groove structure is greater than the width of the second baffle plate (14), and the groove structure is connected to the second baffle plate (14) via a fastener.

7. The expandable rain eave structure according to claim 6, characterized in that: The top openings of both the first row of rain chambers (101) and the second row of rain chambers (201) are facing upwards to receive rainwater, and both the first row of rain chambers (101) and the second row of rain chambers (201) have at least one rain outlet on their sides or bottoms.

8. The expandable rain eave structure according to any one of claims 5 to 7, characterized in that: The basic rain eave (1) further comprises a first blocking plate (11), wherein the first blocking plate (11) is used to block one side of the first rain drainage cavity (101), and the other side of the first rain drainage cavity (101) is used to drain rainwater; The extended rain eave (2) further comprises a second blocking plate (21), wherein the second blocking plate (21) is used to block one side of the second rain drainage cavity (201), and the other side of the second rain drainage cavity (201) is used to drain rainwater.

9. The expandable rain eave structure according to claim 8, characterized in that: The bracket (3) and the second bottom plate (23), and the third baffle plate (22) and the second baffle plate (14) are all connected via bolts.

10. The expandable rain eave structure according to claim 9, characterized in that: The bracket (3) comprises an integrally formed support portion (31) and mounting portions (32) on both sides thereof, and the included angle between the mounting portion (32) and the support portion (31) is an obtuse angle.

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