Metal roof gutter deformation joint structure
Patent Information
- Application Number
- CN202522146341.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-10
- Publication Date
- 2026-10-16
- Estimated Expiration
- 2035-10-10
AI Technical Summary
传统天沟变形缝主要采用以下两种方案：1、橡胶密封变形缝：采用弹性橡胶止水带或密封胶填充接缝，虽能适应一定变形，但长期暴露于紫外线、高低温交替环境下易老化、开裂，导致密封失效，使用寿命较短
[0018]1. In this utility model, the left and right gutters of the metal roof gutter expansion joint structure are both metal gutters, both horizontally arranged along the left-right direction and spaced apart from each other. The openings of both the left and right gutters face upwards. The expansion joint assembly is a metal expansion joint assembly including a left end plate, a right end plate, and a cover plate. Both the left and right end plates are vertically arranged along the front-back direction and spaced apart from each other. The left end plate is located on the right end of the bottom plate of the left gutter, between the right end of the front sidewall and the right end of the rear sidewall of the left gutter, and connects the right end of the front sidewall and the right end of the rear sidewall of the left gutter. The right end plate is located on the left end of the bottom plate of the right gutter, between the left end of the front sidewall and the right end of the rear sidewall of the right gutter. The cover plate is horizontally positioned along the front and rear directions, connecting the left ends of the front and rear walls of the right gutter. The left side of the cover plate is positioned on the left end cap, and the right end cap is located below the cover plate. The right side of the cover plate protrudes to the right from the right end cap. The front end of the cover plate is located behind the right end of the front wall of the left gutter and the left end of the front wall of the right gutter, connecting to the right end of the front wall of the left gutter and abutting against the left end of the front wall of the right gutter. The rear end of the cover plate is located in front of the right end of the rear wall of the left gutter and the left end of the rear wall of the right gutter, connecting to the right end of the rear wall of the left gutter and abutting against the left end of the rear wall of the right gutter. Therefore, it is corrosion-resistant, anti-aging, and can adapt to frequent expansion and contraction deformation, improving waterproof reliability and service life, while reducing construction difficulty and maintenance requirements, making it suitable for large-scale promotion and application.
Smart Images
Figure CN224859115U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building engineering technology, and in particular to the field of metal roof building expansion joint technology, specifically referring to a metal roof gutter expansion joint structure. Background Technology
[0002] Construction engineering refers to the physical engineering project formed by the construction of various types of buildings and their ancillary facilities, as well as the installation of supporting lines, pipelines, and equipment.
[0003] In large metal roof buildings (such as airports, stadiums, and industrial plants), gutter expansion joints are crucial for addressing leaks caused by structural thermal expansion and contraction, and settlement deformation. Traditional gutter expansion joints primarily employ two solutions: 1. Rubber-sealed expansion joints: These use elastic rubber waterstops or sealant to fill the joints. While they can adapt to certain deformations, long-term exposure to ultraviolet radiation and alternating high and low temperatures makes them prone to aging and cracking, leading to seal failure and a short service life. 2. Bolted or welded expansion joints: These cover the joints with galvanized steel or aluminum alloy plates and are fixed with bolts or welded connections. While this type of structure has better durability than rubber, it is difficult to construct, has high rigidity, and struggles to adapt to the frequent expansion and contraction of large-span roofs. It is prone to weld cracking, bolt loosening, or metal fatigue damage, requiring high maintenance standards.
[0004] Therefore, it is desirable to provide a metal roof gutter expansion joint structure that is corrosion-resistant, anti-aging, and can adapt to frequent expansion and contraction, thereby improving waterproofing reliability and service life, while reducing construction difficulty and maintenance requirements. Utility Model Content
[0005] In order to overcome the shortcomings of the prior art, one objective of this utility model is to provide a metal roof gutter expansion joint structure that is corrosion-resistant, anti-aging, and can adapt to frequent expansion and contraction deformation, thereby improving waterproof reliability and service life, while reducing construction difficulty and maintenance requirements, and is suitable for large-scale promotion and application.
[0006] Another objective of this utility model is to provide a metal roof gutter expansion joint structure, which is ingeniously designed, simple in structure, easy to manufacture, and low in manufacturing cost, making it suitable for large-scale promotion and application.
[0007] To achieve the above objectives, this utility model provides a metal roof gutter expansion joint structure, including a left gutter and a right gutter, both of which are metal gutters. Both the left and right gutters are horizontally arranged and positioned along the left-right direction, spaced apart from each other. The openings of both the left and right gutters face upwards. The structure is characterized by further including an expansion joint assembly, wherein:
[0008] The expansion joint assembly is a metal expansion joint assembly and includes a left end plate, a right end plate, and a cover plate. Both the left and right end plates are vertically arranged along the front-to-back direction and spaced apart from each other. The left end plate is located on the right end of the bottom plate of the left gutter, between the right end of the front sidewall and the right end of the rear sidewall of the left gutter, and connects to both the right end of the front sidewall and the right end of the rear sidewall of the left gutter. The right end plate is located on the left end of the bottom plate of the right gutter, between the left end of the front sidewall and the left end of the rear sidewall of the right gutter, and connects to both the left end of the front sidewall and the right end of the rear sidewall of the right gutter. At the left end of the sidewall, the cover plate is horizontally arranged and positioned along the front-rear direction. The left side of the cover plate is positioned on the left end plate. The right end plate is located below the cover plate. The right side of the cover plate protrudes to the right from the right end plate. The front end of the cover plate is located after the right end of the front sidewall of the left gutter and the left end of the front sidewall of the right gutter, and connects to the right end of the front sidewall of the left gutter and abuts against the left end of the front sidewall of the right gutter. The rear end of the cover plate is located before the right end of the rear sidewall of the left gutter and the left end of the rear sidewall of the right gutter, and connects to the right end of the rear sidewall of the left gutter and abuts against the left end of the rear sidewall of the right gutter.
[0009] Preferably, the expansion joint assembly further includes a right baffle, which is vertically arranged and arranged along the front-rear direction. The right side of the cover plate is disposed on the right baffle. The right baffle is located to the right of the top of the right end plate. The right baffle is located between the left end of the front sidewall of the right gutter and the left end of the rear sidewall of the right gutter, and abuts against the left end of the front sidewall of the right gutter and the left end of the rear sidewall of the right gutter, respectively.
[0010] Preferably, the expansion joint assembly further includes a front baffle, which is vertically arranged and positioned on the front end of the cover plate along the left-right direction. The front baffle is located after the right end of the front sidewall of the left gutter and the left end of the front sidewall of the right gutter, and is connected to the right end of the front sidewall of the left gutter and abuts against the left end of the front sidewall of the right gutter.
[0011] Preferably, the expansion joint assembly further includes a rear baffle, which is vertically arranged and positioned on the rear end of the cover plate along the left-right direction. The rear baffle is located in front of the right end of the rear sidewall of the left gutter and the left end of the rear sidewall of the right gutter, and is connected to the right end of the rear sidewall of the left gutter and abuts against the left end of the rear sidewall of the right gutter.
[0012] Preferably, the expansion joint assembly further includes an extension plate, which is horizontally arranged and positioned along the front-rear direction. The extension plate is located under the cover plate, with its left side disposed on the right end plate. The right side of the cover plate protrudes from the extension plate to the right. The extension plate is located between the left end of the front sidewall of the right gutter and the left end of the rear sidewall of the right gutter, and connects the left end of the front sidewall of the right gutter and the left end of the rear sidewall of the right gutter, respectively.
[0013] Preferably, the left end plate is welded to the right end of the bottom plate of the left gutter and to the right end of the front sidewall and the right end of the rear sidewall of the left gutter, respectively; the right end plate is welded to the left end of the bottom plate of the right gutter and to the left end of the front sidewall and the left end of the rear sidewall of the right gutter, respectively.
[0014] Preferably, the metal gutter is a stainless steel gutter, and the metal expansion joint assembly is a stainless steel expansion joint assembly.
[0015] Preferably, a drainage hopper is provided at the right end of the bottom plate of the left gutter, the drainage hopper being located to the left of the left end plate and between the right end of the front sidewall and the right end of the rear sidewall of the left gutter.
[0016] More preferably, the drainage hopper is a siphon drainage hopper.
[0017] The main beneficial effects of this utility model are as follows:
[0018] 1. In this utility model, the left and right gutters of the metal roof gutter expansion joint structure are both metal gutters, both horizontally arranged along the left-right direction and spaced apart from each other. The openings of both the left and right gutters face upwards. The expansion joint assembly is a metal expansion joint assembly including a left end plate, a right end plate, and a cover plate. Both the left and right end plates are vertically arranged along the front-back direction and spaced apart from each other. The left end plate is located on the right end of the bottom plate of the left gutter, between the right end of the front sidewall and the right end of the rear sidewall of the left gutter, and connects the right end of the front sidewall and the right end of the rear sidewall of the left gutter. The right end plate is located on the left end of the bottom plate of the right gutter, between the left end of the front sidewall and the right end of the rear sidewall of the right gutter. The cover plate is horizontally positioned along the front and rear directions, connecting the left ends of the front and rear walls of the right gutter. The left side of the cover plate is positioned on the left end cap, and the right end cap is located below the cover plate. The right side of the cover plate protrudes to the right from the right end cap. The front end of the cover plate is located behind the right end of the front wall of the left gutter and the left end of the front wall of the right gutter, connecting to the right end of the front wall of the left gutter and abutting against the left end of the front wall of the right gutter. The rear end of the cover plate is located in front of the right end of the rear wall of the left gutter and the left end of the rear wall of the right gutter, connecting to the right end of the rear wall of the left gutter and abutting against the left end of the rear wall of the right gutter. Therefore, it is corrosion-resistant, anti-aging, and can adapt to frequent expansion and contraction deformation, improving waterproof reliability and service life, while reducing construction difficulty and maintenance requirements, making it suitable for large-scale promotion and application.
[0019] 2. In this utility model, the left and right gutters of the metal roof gutter expansion joint structure are both metal gutters, both horizontally arranged along the left-right direction and spaced apart from each other. The openings of both the left and right gutters face upwards. The expansion joint assembly is a metal expansion joint assembly including a left end plate, a right end plate, and a cover plate. Both the left and right end plates are vertically arranged along the front-back direction and spaced apart from each other. The left end plate is located on the right end of the bottom plate of the left gutter, between the right end of the front sidewall and the right end of the rear sidewall of the left gutter, and connects the right end of the front sidewall and the right end of the rear sidewall of the left gutter. The right end plate is located on the left end of the bottom plate of the right gutter and is located on the right sidewall of the right gutter. The cover plate is positioned between the left end of the front sidewall and the left end of the rear sidewall, and connects to the left end of the front sidewall and the left end of the rear sidewall of the right gutter, respectively. The cover plate is horizontally positioned along the front-rear direction. The left side of the cover plate is set on the left end plate, and the right end plate is located below the cover plate. The right side of the cover plate protrudes to the right from the right end plate. The front end of the cover plate is located behind the right end of the front sidewall of the left gutter and the left end of the front sidewall of the right gutter, and connects to the right end of the front sidewall of the left gutter and abuts against the left end of the front sidewall of the right gutter. The rear end of the cover plate is located in front of the right end of the rear sidewall of the left gutter and the left end of the rear sidewall of the right gutter, and connects to the right end of the rear sidewall of the left gutter and abuts against the left end of the rear sidewall of the right gutter. Therefore, its design is ingenious, its structure is simple, its manufacturing is convenient, its manufacturing cost is low, and it is suitable for large-scale promotion and application.
[0020] These and other objects, features and advantages of this utility model will be fully apparent from the following detailed description and drawings, and can be achieved by the means, devices and combinations thereof specifically pointed out in the description of the utility model. Attached Figure Description
[0021] Figure 1 This is a three-dimensional sectional view of the first specific embodiment of the metal roof gutter expansion joint structure of this utility model.
[0022] Figure 2 This is a three-dimensional sectional view of the second specific embodiment of the metal roof gutter expansion joint structure of this utility model.
[0023] (Explanation of reference numerals in the attached diagram)
[0024] 1. Left gutter; 2. Right gutter; 3. Expansion joint assembly; 31. Left end cap; 32. Right end cap; 33. Cover plate; 34. Right baffle; 35. Extension plate; 36. Rear baffle; 4. Drainage hopper. Detailed Implementation
[0025] In order to better understand the technical content of this utility model, the following embodiments are provided for detailed description.
[0026] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0027] Please see Figures 1-2 As shown, in the first and second specific embodiments of this utility model, the metal roof gutter expansion joint structure of this utility model includes a left gutter 1, a right gutter 2, and an expansion joint assembly 3, wherein:
[0028] Both the left gutter 1 and the right gutter 2 are metal gutters. Both the left gutter 1 and the right gutter 2 are horizontally arranged and arranged along the left and right directions, and are spaced apart from each other. The openings of the left gutter 1 and the right gutter 2 are both facing upwards.
[0029] The expansion joint assembly 3 is a metal expansion joint assembly and includes a left end plate 31, a right end plate 32, and a cover plate 33. Both the left end plate 31 and the right end plate 32 are vertically arranged and aligned along the front-to-back direction, spaced apart from each other. The left end plate 31 is located on the right end of the bottom plate of the left gutter 1, between the right end of the front sidewall and the right end of the rear sidewall of the left gutter 1, and connects to both the right end of the front sidewall and the right end of the rear sidewall of the left gutter 1. The right end plate 32 is located on the left end of the bottom plate of the right gutter 2, between the left end of the front sidewall and the left end of the rear sidewall of the right gutter 2, and connects to both the left end of the front sidewall and the rear sidewall of the right gutter 2. At the left end of the wall, the cover plate 33 is horizontally arranged and arranged along the front-back direction. The left side of the cover plate 33 is arranged on the left end plate 31. The right end plate 32 is located below the cover plate 33. The right side of the cover plate 33 protrudes to the right from the right end plate 32. The front end of the cover plate 33 is located after the right end of the front side wall of the left gutter 1 and the left end of the front side wall of the right gutter 2, and connects to the right end of the front side wall of the left gutter 1 and abuts against the left end of the front side wall of the right gutter 2. The rear end of the cover plate 33 is located before the right end of the rear side wall of the left gutter 1 and the left end of the rear side wall of the right gutter 2, and connects to the right end of the rear side wall of the left gutter 1 and abuts against the left end of the rear side wall of the right gutter 2.
[0030] The expansion joint assembly 3 may also include any other suitable components; please refer to [link / reference]. Figures 1-2 As shown, in the first and second specific embodiments of this utility model, the expansion joint assembly 3 further includes a right baffle 34. The right baffle 34 is vertically arranged and arranged along the front-back direction. The right side of the cover plate 33 is arranged on the right baffle 34. The right baffle 34 is located to the right of the top of the right end plate 32. The right baffle 34 is located between the left end of the front sidewall of the right gutter 2 and the left end of the rear sidewall of the right gutter 2, and abuts against the left end of the front sidewall of the right gutter 2 and the left end of the rear sidewall of the right gutter 2, respectively.
[0031] The expansion joint assembly 3 may also include any other suitable configuration. In the first and second specific embodiments of this utility model, the expansion joint assembly 3 further includes a front baffle (not shown in the figure). The front baffle is vertically arranged and disposed on the front end of the cover plate 33 along the left and right directions. The front baffle is located after the right end of the front side wall of the left gutter 1 and the left end of the front side wall of the right gutter 2, and is connected to the right end of the front side wall of the left gutter 1 and abuts against the left end of the front side wall of the right gutter 2.
[0032] The expansion joint assembly 3 may also include any other suitable components; please refer to [link / reference]. Figures 1-2As shown, in the first and second specific embodiments of this utility model, the expansion joint assembly 3 further includes a rear baffle 36. The rear baffle 36 is vertically arranged and disposed on the rear end of the cover plate 33 along the left and right directions. The rear baffle 36 is located in front of the right end of the rear side wall of the left gutter 1 and the left end of the rear side wall of the right gutter 2, and is connected to the right end of the rear side wall of the left gutter 1 and abuts against the left end of the rear side wall of the right gutter 2.
[0033] The expansion joint assembly 3 may also include any other suitable components; please refer to [link / reference]. Figures 1-2 As shown, in the first and second specific embodiments of this utility model, the expansion joint assembly 3 further includes an extension plate 35. The extension plate 35 is horizontally arranged and arranged along the front-rear direction. The extension plate 35 is located below the cover plate 33. The left side of the extension plate 35 is disposed on the right end plate 32. The right side of the cover plate 33 protrudes to the right from the extension plate 35. The extension plate 35 is located between the left end of the front sidewall of the right gutter 2 and the left end of the rear sidewall of the right gutter 2, and connects the left end of the front sidewall of the right gutter 2 and the left end of the rear sidewall of the right gutter 2, respectively. When the expansion joint assembly 3 further includes a right baffle 34, the right baffle 34 is located to the right of the extension plate 35.
[0034] The left end plate 31 is disposed on the right end of the bottom plate of the left gutter 1 and is connected to the right end of the front side wall and the right end of the rear side wall of the left gutter 1 respectively. The right end plate 32 is disposed on the left end of the bottom plate of the right gutter 2 and is connected to the left end of the front side wall and the left end of the rear side wall of the right gutter 2 respectively. Any suitable structure can be adopted. In the first and second specific embodiments of this utility model, the left end plate 31 is welded to the right end of the bottom plate of the left gutter 1 and is welded to the right end of the front side wall and the right end of the rear side wall of the left gutter 1 respectively. The right end plate 32 is welded to the left end of the bottom plate of the right gutter 2 and is welded to the left end of the front side wall and the left end of the rear side wall of the right gutter 2 respectively.
[0035] The metal gutter can be made of any suitable material, and the metal expansion joint assembly can be made of any suitable material. In the first and second embodiments of this utility model, the metal gutter is a stainless steel gutter, and the metal expansion joint assembly is a stainless steel expansion joint assembly. With the above configuration, this utility model has an all-stainless steel structure, further improving corrosion resistance and UV resistance, making it suitable for harsh environments such as high humidity and high salt spray.
[0036] The right end of the base plate of the left gutter 1 can be configured in any suitable way; please refer to [reference needed]. Figure 2As shown, in the second specific embodiment of this utility model, a drainage hopper 4 is provided at the right end of the bottom plate of the left gutter 1. The drainage hopper 4 is located to the left of the left end plate 31 and between the right end of the front side wall of the left gutter 1 and the right end of the rear side wall of the left gutter 1.
[0037] The drainage hopper 4 can be any suitable drainage hopper. In the second specific embodiment of this utility model, the drainage hopper 4 is a siphon drainage hopper.
[0038] During construction, place the right end of the left gutter 1 above and to the left of the left end of the right gutter 2, so that the left end plate 31 is aligned with the left side of the right end plate 32, the cover plate 33 is aligned between the left end of the front wall and the left end of the rear wall of the right gutter 2 and is located above the right end plate 32, and the right side of the cover plate 33 is aligned with the right side of the right end plate 32. Then, move the right end of the left gutter 1 down so that the left end plate 31 is located to the left of the right end plate 32, the front end of the cover plate 33 is located behind the left end of the front wall of the right gutter 2 and abuts against the left end of the front wall of the right gutter 2, the rear end of the cover plate 33 is located in front of the left end of the rear wall of the right gutter 2 and abuts against the left end of the rear wall of the right gutter 2, and the right end plate 32 is located below the cover plate 33, with the right side of the cover plate 33 protruding to the right from the right end plate 32.
[0039] When the expansion joint assembly 3 also includes a right baffle 34, the right end of the left gutter 1 is placed to the upper left of the left end of the right gutter 2, such that the left end plate 31 is aligned with the left side of the right end plate 32, the cover plate 33 is aligned between the left end of the front side wall and the left end of the rear side wall of the right gutter 2 and is located above the right end plate 32, and the right baffle 34 is aligned with the right side of the right end plate 32. Then, the right end of the left gutter 1 is moved down so that the left end plate 31 is located to the left of the right end plate 32, the front end of the cover plate 33 is located behind the left end of the front side wall of the right gutter 2 and abuts against the left end of the front side wall of the right gutter 2, the rear end of the cover plate 33 is located in front of the left end of the rear side wall of the right gutter 2 and abuts against the left end of the rear side wall of the right gutter 2, the right end plate 32 is located below the cover plate 33, and the right baffle 34 is located to the right of the top of the right end plate 32.
[0040] When the expansion joint assembly 3 also includes a front baffle and the expansion joint assembly 3 also includes a rear baffle 36, after the right end of the left gutter 1 is moved down, the front baffle is positioned behind the left end of the front sidewall of the right gutter 2 and abuts against the left end of the front sidewall of the right gutter 2, and the rear baffle 36 is positioned in front of the left end of the rear sidewall of the right gutter 2 and abuts against the left end of the rear sidewall of the right gutter 2.
[0041] When the expansion joint assembly 3 also includes an extension plate 35, the right end of the left gutter 1 is placed to the upper left of the left end of the right gutter 2, such that the left end plate 31 is aligned with the left side of the right end plate 32, the cover plate 33 is aligned with the position between the left end of the front side wall and the left end of the rear side wall of the right gutter 2 and is located above the extension plate 35, and the right side of the cover plate 33 is aligned with the right side of the extension plate 35. Then, the right end of the left gutter 1 is moved down, so that the left end plate 31 is located to the left of the right end plate 32, the front end of the cover plate 33 is located behind the left end of the front side wall of the right gutter 2 and abuts against the left end of the front side wall of the right gutter 2, the rear end of the cover plate 33 is located in front of the left end of the rear side wall of the right gutter 2 and abuts against the left end of the rear side wall of the right gutter 2, and the extension plate 35 is located below the cover plate 33, with the right side of the cover plate 33 protruding to the right from the extension plate 35.
[0042] Therefore, by employing this invention, a relatively sliding expansion joint (located between the left and right end plates) can be created through the expansion joint assembly. While providing expansion and contraction, the expansion joint assembly also serves to shield rainwater from entering the expansion joint, solving the drainage and leakage problems caused by deformation in large-span roofs. On-site construction requires only overlapping connections, eliminating the need for welding, thus increasing construction efficiency by over 40%. The structure boasts high durability, with a service life exceeding 20 years, significantly reducing replacement frequency.
[0043] Therefore, this utility model addresses the problems of easy aging, poor corrosion resistance, insufficient deformation adaptability, and complex construction of existing metal roof gutter expansion joints by providing a metal roof gutter expansion joint structure that is structurally reasonable, easy to install, and has good weather resistance. This structure can effectively adapt to the thermal expansion and contraction deformation of the roof, improve waterproof performance, extend service life, and reduce construction difficulty and maintenance requirements.
[0044] In summary, the metal roof gutter expansion joint structure of this utility model is corrosion-resistant, anti-aging, and can adapt to frequent expansion and contraction deformation, improving waterproof reliability and service life. At the same time, it reduces construction difficulty and maintenance requirements. It is ingeniously designed, simple in structure, easy to manufacture, and has low manufacturing cost, making it suitable for large-scale promotion and application.
[0045] Therefore, it is evident that the objective of this utility model has been fully and effectively achieved. The function and structural principles of this utility model have been demonstrated and explained in the embodiments. Without departing from the stated principles, any modifications can be made to the implementation methods. Therefore, this utility model includes all modified embodiments based on the spirit and scope of the claims.
Claims
1. A metal roof gutter expansion joint structure, comprising a left gutter and a right gutter, both the left and right gutters being metal gutters, both the left and right gutters being horizontally arranged and positioned along a left-right direction and spaced apart from each other, the openings of both the left and right gutters facing upwards, characterized in that... The metal roof gutter expansion joint structure also includes expansion joint components, wherein: The expansion joint assembly is a metal expansion joint assembly and includes a left end plate, a right end plate, and a cover plate. Both the left and right end plates are vertically arranged along the front-to-back direction and spaced apart from each other. The left end plate is located on the right end of the bottom plate of the left gutter, between the right end of the front sidewall and the right end of the rear sidewall of the left gutter, and connects to both the right end of the front sidewall and the right end of the rear sidewall of the left gutter. The right end plate is located on the left end of the bottom plate of the right gutter, between the left end of the front sidewall and the left end of the rear sidewall of the right gutter, and connects to both the left end of the front sidewall and the right end of the rear sidewall of the right gutter. At the left end of the sidewall, the cover plate is horizontally arranged and positioned along the front-rear direction. The left side of the cover plate is positioned on the left end plate. The right end plate is located below the cover plate. The right side of the cover plate protrudes to the right from the right end plate. The front end of the cover plate is located after the right end of the front sidewall of the left gutter and the left end of the front sidewall of the right gutter, and connects to the right end of the front sidewall of the left gutter and abuts against the left end of the front sidewall of the right gutter. The rear end of the cover plate is located before the right end of the rear sidewall of the left gutter and the left end of the rear sidewall of the right gutter, and connects to the right end of the rear sidewall of the left gutter and abuts against the left end of the rear sidewall of the right gutter.
2. The metal roof gutter expansion joint structure as described in claim 1, characterized in that, The expansion joint assembly also includes a right baffle, which is vertically arranged and along the front-rear direction. The right side of the cover plate is disposed on the right baffle. The right baffle is located to the right of the top of the right end plate. The right baffle is located between the left end of the front sidewall of the right gutter and the left end of the rear sidewall of the right gutter, and abuts against the left end of the front sidewall of the right gutter and the left end of the rear sidewall of the right gutter, respectively.
3. The metal roof gutter expansion joint structure as described in claim 1, characterized in that, The expansion joint assembly also includes a front baffle, which is vertically arranged and positioned on the front end of the cover plate along the left-right direction. The front baffle is located after the right end of the front sidewall of the left gutter and the left end of the front sidewall of the right gutter, and is connected to the right end of the front sidewall of the left gutter and abuts against the left end of the front sidewall of the right gutter.
4. The metal roof gutter expansion joint structure as described in claim 1, characterized in that, The expansion joint assembly also includes a rear baffle, which is vertically arranged and positioned on the rear end of the cover plate along the left-right direction. The rear baffle is located in front of the right end of the rear sidewall of the left gutter and the left end of the rear sidewall of the right gutter, and is connected to the right end of the rear sidewall of the left gutter and abuts against the left end of the rear sidewall of the right gutter.
5. The metal roof gutter expansion joint structure as described in claim 1, characterized in that, The expansion joint assembly also includes an extension plate, which is horizontally arranged and positioned along the front-rear direction. The extension plate is located under the cover plate, with its left side disposed on the right end plate. The right side of the cover plate protrudes from the extension plate to the right. The extension plate is located between the left end of the front sidewall of the right gutter and the left end of the rear sidewall of the right gutter, and connects the left end of the front sidewall of the right gutter and the left end of the rear sidewall of the right gutter, respectively.
6. The metal roof gutter expansion joint structure as described in claim 1, characterized in that, The left end cap is welded to the right end of the bottom plate of the left gutter and to the right end of the front sidewall and the right end of the rear sidewall of the left gutter, respectively. The right end cap is welded to the left end of the bottom plate of the right gutter and to the left end of the front sidewall and the left end of the rear sidewall of the right gutter, respectively.
7. The metal roof gutter expansion joint structure as described in claim 1, characterized in that, The metal gutter is a stainless steel gutter, and the metal expansion joint assembly is a stainless steel expansion joint assembly.
8. The metal roof gutter expansion joint structure as described in claim 1, characterized in that, A drainage hopper is provided at the right end of the bottom plate of the left gutter. The drainage hopper is located to the left of the left end plate and between the right end of the front side wall of the left gutter and the right end of the rear side wall of the left gutter.
9. The metal roof gutter expansion joint structure as described in claim 8, characterized in that, The drainage hopper is a siphon drainage hopper.