Structural beam and overhanging protective shed for building thereof

Abstract

The utility model discloses a structural beam and a cantilever protective shed for a building thereof, which comprises a keel body and an outer covering part, and the outer covering part can be attached to the keel body in a manner of being matched with the keel body in an inserting manner and covers the outer part of the keel body after being matched in the inserting manner; the outer covering piece is provided with a connection matching part used for being connected with an external structural beam. On the basis of insertion matching of the outer covering part and the keel body, the structural beam can be quickly assembled on a construction site; meanwhile, due to the fact that the connecting and matching part is arranged outside the outer covering piece, after the structural beam is assembled, the structural beam and the outer structural beam can be rapidly assembled based on the connecting and matching part, and therefore rapid assembling of the whole frame is achieved. Therefore, the operation time can be greatly shortened, the working intensity can be greatly reduced, the installation difficulty of an existing overhanging protective shed for the building is lowered, the probability of installation accidents is lowered, and the safety of operators is protected.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of building outdoor protection, and particularly relates to a structural beam and a cantilever protective shed for buildings. BACKGROUND

[0002] The protective shed (also known as a sunshade or a rain shed) is a protective structure for buildings, which is arranged in a cantilever manner outside the entrance or window of a building, and is mainly used for sun-shading, rain-shielding, wind-shielding and / or preventing falling objects from the sky from hurting people.

[0003] Most of the existing protective sheds are made of steel structures, and the protective shed made of a steel structure is usually heavy, and needs professional equipment and more manpower during installation. For example, during the installation of a large protective shed made of a steel structure, a crane and professional operators may be needed, which undoubtedly increases the installation difficulty and cost.

[0004] Secondly, since the protective shed made of a steel structure is directly exposed to the external environment, it is easy to be eroded by the external environment. Even if relevant anti-corrosion measures are taken, the anti-corrosion layer is easy to be damaged over time and under the influence of environmental factors. Once the anti-corrosion layer is damaged, the protective shed made of a steel structure will start to be corroded and rusted, which not only affects the appearance of the protective shed, but also damages the original protective shed structure strength, greatly weakens the load-bearing capacity of the protective shed, and finally may cause the protective shed to collapse, affecting people's life and property safety.

[0005] In addition, the protective shed made of a steel structure will produce a large noise when it is impacted by the external environment, such as rain, hail and sandstorm, which will affect the environment around the protective shed, especially when the protective shed is installed near a hospital, a residential area or a school, which may cause people's dissatisfaction.

[0006] In addition, when the protective shed made of a steel structure is built, the builders usually need to perform high-altitude operations, and the weight of the steel structure itself will slow down the building speed, thereby increasing the time of high-altitude operation and posing a potential threat to the life and property of the personnel. SUMMARY

[0007] In view of the above shortcomings of the prior art, the utility model aims to provide a structural beam and a cantilever protective shed for buildings, which can effectively protect the keel body of the structural beam, thereby ensuring the structural strength of the keel body; at the same time, it can realize the rapid assembly of the structural beam body itself at the construction site, and can realize the rapid connection between the structural beams (such as longitudinal beams and transverse beams) by means of the connecting and matching parts provided on the outer cover, thereby realizing the rapid assembly of the frame as a whole.

[0008] The utility model discloses a first aspect discloses a kind of structural beams, including keel body and outer cover, outer cover can be attached on keel body with the way of with keel body plug-in cooperation, and form coating outside keel body after plug-in cooperation;Connecting cooperation part for being mutually connected with external structural beam is provided on outer cover.

[0009] The structural beam of the utility model is usually longitudinal beam, and the keel body therein can be attached to the wall of building. In use, the keel body is connected with the wall of building, or the plug-in cooperation of outer cover and keel body can be used to quickly attach the outer cover to the keel body, thereby forming the assembly of longitudinal beam itself. Meanwhile, since the connecting cooperation part for being mutually connected with external structural beam is provided on the outer cover, the structural beam of the utility model after assembly can be quickly connected with external structural beam by the connecting cooperation part. It should be particularly pointed out that the so-called "external structural beam" usually refers to crossbeam, which can be the structural beam disclosed by the utility model, i.e. the beam structure including keel body and outer cover, or the structural beam without keel body but only with outer cover. Of course, those skilled in the art can also understand that the so-called "external structural beam" can also be the structural beam of other disclosed structures in the prior art.

[0010] Of course, those skilled in the art can understand that the structural beam of the utility model can also be used as crossbeam.

[0011] Further, the keel body includes vertical plug-in part, the outer cover includes top plate body part and plug-in cooperation part connected with the top plate body part, and the plug-in cooperation part has plug-in slot with downward opening and capable of accommodating the vertical plug-in part. That is, in specific assembly, the vertical plug-in part of the keel body can be accommodated in the plug-in slot, which can form quick and reliable connection, thereby greatly reducing the operation difficulty, further reducing the operation time, and reducing the potential danger to personnel life and property.

[0012] Further, the plug-in cooperation part includes upper top part and two extension plate body parts arranged opposite and parallel and extending downward from the side edge of the upper top part, and the height position of the upper top part is higher than the position of the top plate body part, and the plug-in slot is surrounded by the space between the upper top part and the two extension plate body parts.

[0013] Further, the keel body further comprises a horizontal receiving part connected to the lower end of the vertical inserting part and forming an inverted T-shaped structure with the vertical inserting part; the outer cover further comprises two abutting plate parts formed by bending the lower ends of the two extension plate parts in the horizontal direction and extending away from each other, and the two abutting plate parts can abut against the horizontal receiving part on both sides of the vertical inserting part of the keel body. This makes the outer cover and the keel body quickly assembled in place, that is, when assembling, as the vertical inserting part of the keel body is inserted into the inserting slot, when the horizontal receiving part of the keel body abuts against the abutting plate part of the outer cover, it means that the assembly between the outer cover and the keel body is in place; at the same time, by means of the abutting cooperation of the horizontal receiving part of the keel body and the abutting plate part of the outer cover, the keel body can receive the outer cover, thereby ensuring the structural strength and working stability of the outer cover.

[0014] Further, the outer cover further comprises a connecting plate part parallel to the extension plate part, and one connecting plate part is arranged between the top plate part and the abutting plate part on both sides of the inserting and cooperating part, and the connecting cooperating part is configured on the connecting plate part. Wherein, the upper and lower sides of the connecting plate part are connected with the top plate part and the abutting plate part respectively, so as to have better overall structural strength, thereby increasing the structural strength of the connecting plate part. That is to say, in the utility model, the top plate part, the extension plate part, the abutting plate part and the connecting plate part of the outer cover are integrally formed.

[0015] Further, the connecting cooperating part is configured with an inserting part receiving slot extending in the length direction of the connecting plate part, the outer side of the connecting plate part is provided with a lower constraint part, the lower side of the top plate part is formed with an upper constraint part, and the upper constraint part, the lower constraint part and the connecting plate part jointly enclose the inserting part receiving slot. Wherein, the upper constraint part is a long strip structure, the lower constraint part is an L-shaped structure, and a limiting flange opposite to the upper constraint part is formed at the edge, and the gap between the upper constraint part and the lower constraint part forms the size of the inserting part receiving slot, and at the same time, the limiting flanges of the upper constraint part and the lower constraint part form limiting, thereby preventing the connecting part from being pulled out of the inserting part receiving slot.

[0016] In the utility model, the inserting slot can accelerate the lapping speed of the longitudinal beam and the transverse beam, when the transverse beam needs to be lapped, the connecting part is only inserted into the inserting slot and slid to the specified position of lapping, and then the transverse beam can be lapped, and this way greatly improves the lapping efficiency of the longitudinal beam and the transverse beam.

[0017] Further, the structural beam further comprises a connecting piece, the connecting piece comprising a body connecting plate body part and an external connecting plate body part in L-shaped structure, wherein the body connecting plate body part can be received in the corresponding plug-in receiving slot and can be moved along the plug-in receiving slot, and the width of the external connecting plate body part is configured to be smaller than the width of the body connecting plate body part and allow the opening between the two limiting flanges to extend out of the plug-in receiving slot for inserting into the corresponding plug-in receiving slot of the external structural beam.

[0018] Further, there is a cavity between the connecting plate body part and the extending plate body part. The cavity structure can form a buffering effect and can be used for slow energy dissipation. Specifically, when encountering the collision of external objects or strong winds, due to the cavity effect of the outer cover, the collision energy can be slowly dissipated by extruding the cavity, that is, the energy generated by the collision is slowly released through the deformation of the cavity, protecting the stability of the structural beam structure and the safety of the people below the beam body. Compared with the existing steel beam component directly absorbing energy through rigid contact, this energy dissipation method can effectively avoid the internal steel main support from being damaged by impact, thereby ensuring the carrying capacity and stability of the overall structural beam and improving the safety of the overall structural beam protection.

[0019] Further, the keel body is made of steel material, and the outer cover is made of aluminum alloy material. This makes the structural beam of the utility model form an aluminum-clad steel structure as a whole, and the steel material keel body can ensure the structural strength of the overall structural beam, and the external aluminum alloy material cover can not only ensure the connection with the external structural beam, but also has a certain ornamental value after erection due to the metallic luster of aluminum, which can be more coordinated with the surrounding buildings and has high aesthetic value. In addition, the outer cover of the aluminum alloy material can form good protection for the keel body, prevent the erosion of the external environment to the internal keel body, thereby ensuring the structural strength of the overall structural beam and prolonging the service life of the structural beam. Moreover, the aluminum shell can reduce the noise generated by interaction when encountering external harsh environment, avoiding affecting the people around.

[0020] Further, the outer cover further comprises a side cover plate, the upper part of the side cover plate is clamped with the top plate body part, and the lower part is clamped on the abutting plate body part; the outer cover further comprises a folded edge plate body part formed by bending and extending downward from the side edge of the abutting plate body part, and the horizontal receiving part of the keel body is received between the two side edge plate body parts; the outer cover further comprises a bottom cover plate, which can be clamped on the two side edge plate body parts.

[0021] Further, the top plate body is provided with two upper limiting plate body parts extending upward and arranged side by side, and the outer covering part further comprises an upper cover plate capable of being clamped on the two upper limiting plate body parts, and a space for accommodating an external shielding member is formed between the upper cover plate and the top plate part.

[0022] The utility model discloses a second aspect further discloses a kind of cantilever protective sheds for building, including shed frame and the sheltering member of erecting on shed frame, and shed frame is assembled by the structural beam disclosed according to the utility model first aspect.

[0023] The utility model has the advantages of the following:

[0024] In the structural beam of the utility model, based on the plug-in cooperation of the outer covering part and the keel body, each component of the structural beam can be prefabricated in the factory, and then quickly assembled at the construction site. Meanwhile, since the connecting fitting part is arranged outside the outer covering part, the structural beam can be quickly assembled based on the connecting fitting part and the external structural beam after the self-assembly of the structural beam is completed, thereby realizing the quick assembly of the frame as a whole. This can greatly reduce the operation time and work intensity, thereby reducing the installation difficulty of the existing cantilever protective shed for building and reducing the probability of installation accidents, which is beneficial to the safety of workers.

[0025] In the utility model, since the outer covering part is arranged outside the keel body to form a covering, the keel body is protected from the external environment, thereby prolonging the service life of the keel body while ensuring the structural strength. Meanwhile, since the outer covering part is arranged, the structural beam of the utility model is more aesthetically pleasing as a whole.

[0026] The horizontal longitudinal beam of the utility model and the cantilever protective shed for building will be disclosed in detail below in combination with the embodiments shown in the drawings and the reference numerals. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 A cross-sectional structure schematic diagram of the structural beam of the utility model is shown.

[0028] Figure 2 An assembly schematic diagram of the structural beam of the utility model and the external structural beam is shown.

[0029] Figure 3 A three-dimensional structure schematic diagram of the structural beam in the utility model is shown, wherein the keel body has not been plug-in assembled with the outer covering part.

[0030] Figure 4 A three-dimensional structure schematic diagram of the structural beam in the utility model is shown, wherein the keel body has been plug-in assembled with the outer covering part.

[0031] Figure 5The use state schematic view of the building cantilever protective shed is shown.

[0032] Reference signs

[0033] 1 keel body, 2 outer cover, 3 external structural beam, 4 connecting piece, 5 shed frame, 6 shielding component.

[0034] 101 vertical insertion part, 102 horizontal receiving part.

[0035] 201 top plate body part, 202 extension plate body part, 203 insertion slot, 204 abutting plate body part, 205 connecting plate body part, 206 plug-in receiving slot, 207 upper restraint part, 208 lower restraint part, 209 limiting flange, 210 cavity, 211 side cover plate, 212 folded edge plate body part, 213 bottom cover plate, 214 upper top part, 215 upper limiting plate body part, 216 upper cover plate.

[0036] 401 body connecting plate body part, 402 external connecting plate body part. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0038] In the utility model, Figure 1 The cross-sectional structure schematic view of the structural beam of the utility model is shown, Figure 2 The assembly schematic view of the structural beam and the external structural beam of the utility model is shown, Figure 3 The three-dimensional structure schematic view of the structural beam in the utility model is shown, wherein the keel body has not formed insertion assembly with the outer cover, Figure 4 The three-dimensional structure schematic view of the structural beam in the utility model is shown, wherein the keel body has formed insertion assembly with the outer cover.

[0039] The utility model discloses a structural beam, including keel body 1 and outer cover 2, outer cover 2 can be attached on keel body 1 with the insertion cooperation of keel body 1, and forms the cladding to the outside of keel body 1 after insertion cooperation, be provided with the connecting cooperation department for being connected with external structural beam 3 on outer cover 2.

[0040] The structural beam of the utility model is usually longitudinal beam, the keel body 1 in it can be attached to the building wall. In use, the keel body 1 is connected with the building wall or can be attached to the keel body 1 with the aid of the plug-in cooperation of the outer cover 2 and the keel body 1, and the outer cover 2 is quickly attached to the keel body 1, thereby forming the assembly of the longitudinal beam itself. At the same time, since the outer cover 2 is provided with the connecting cooperation part connected with the external structural beam 3, this makes the structural beam of the utility model assembled to form the quick connection with the external structural beam 3 with the aid of the connecting cooperation part. It is particularly pointed out that the so-called "external structural beam 3" usually refers to the cross beam, which can be the structural beam disclosed by the utility model, i.e. the beam body structure including the keel body 1 and the outer cover 2, and also can be the structural beam without the keel body 1 and only with the outer cover 2, of course, the person skilled in the art can also understand that the so-called "external structural beam 3" can also be the structural beam of other disclosed structures in the prior art.

[0041] Of course, the person skilled in the art can understand that the structural beam of the utility model can also be used as a cross beam.

[0042] In the embodiment, the keel body 1 includes the vertical plug-in part 101, the outer cover 2 includes the top plate body part 201 and the plug-in cooperation part connected with the top plate body part 201, and the plug-in cooperation part has the plug-in slot 203 opening downward and capable of accommodating the vertical plug-in part 101. That is, in specific assembly, the vertical plug-in part 101 of the keel body 1 can be accommodated in the plug-in slot 203, which can form quick and reliable connection, thereby greatly reducing the operation difficulty, further reducing the operation time, and reducing the potential danger to the life and property of personnel.

[0043] In the embodiment, the plug-in cooperation part includes the upper top part 214 and is formed by the two extension plate body parts 202 oppositely arranged and extending downward from the side edge of the upper top part 214, and the plug-in slot 203 capable of accommodating the vertical plug-in part is constructed between the two extension plate body parts 202.

[0044] In the embodiment, the keel body 1 further comprises a horizontal receiving part 102 connected to the lower end of the vertical inserting part 101 and forming an inverted T-shaped structure with the vertical inserting part 101; and the outer cover 2 further comprises two abutting plate body parts 204 formed by bending the lower ends of the two extension plate body parts 202 in the horizontal direction and extending away from each other, and the two abutting plate body parts 204 can abut against the horizontal receiving part 102 on both sides of the vertical inserting part 101 of the keel body 1, respectively. This makes the outer cover 2 and the keel body 1 quickly assembled in place, that is, when assembling, as the vertical inserting part 101 of the keel body 1 is inserted into the inserting groove 203, when the horizontal receiving part 102 of the keel body 1 abuts against the abutting plate body part 204 of the outer cover 2, it means that the assembly between the outer cover 2 and the keel body 1 is in place; at the same time, by means of the abutting cooperation of the horizontal receiving part 102 of the keel body 1 and the abutting plate body part 204 of the outer cover 2, the keel body 1 can receive the outer cover 2, thereby ensuring the structural strength and working stability of the outer cover 2.

[0045] In the embodiment, the outer cover 2 further comprises a connecting plate body part 205 parallel to the extension plate body part 202, and one connecting plate body part 205 is arranged between the top plate body part 201 and the abutting plate body part 204 on both sides of the inserting and cooperating part, and the inserting and cooperating part is configured on the connecting plate body part 205. Among them, the upper and lower sides of the connecting plate body part 205 are connected with the top plate body part 201 and the abutting plate body part 204, respectively, so as to have better overall structural strength, thereby increasing the structural strength of the connecting plate body part 205. That is to say, in the utility model, the top plate body part 201, the extension plate body part 202, the abutting plate body part 204 and the connecting plate body part 205 of the outer cover 2 are integrally formed.

[0046] In the embodiment, the inserting part receiving groove 206 extending in the length direction of the connecting plate body part 205 is configured on the connecting part, and the upper constraint part 207 and the lower constraint part 208 are arranged on the outer side of the connecting plate body part 205, and the upper constraint part 207, the lower constraint part 208 and the connecting plate body part together enclose the inserting part receiving groove; the upper constraint part 207 is a long strip structure, the lower constraint part 208 is an L-shaped structure, and a limiting flange 209 opposite to the upper constraint part 207 is formed at the edge, and the gap between the upper constraint part 207 and the lower constraint part forms the size of the inserting part receiving groove 206, and at the same time, the limiting flange 209 of the upper constraint part 207 and the lower constraint part 208 forms a limit, thereby preventing the connecting part from being pulled out of the inserting part receiving groove 206.

[0047] In the embodiment, the structural beam further comprises a connecting piece 4, the connecting piece 4 comprises a body connecting plate body part 401 and an external connecting plate body part 402 in an L-shaped structure, wherein the body connecting plate body part 401 can be received in the corresponding plug-in receiving groove 206 and can move along the plug-in receiving groove 206, and the width of the external connecting plate body part 402 is configured to be smaller than the width of the body connecting plate body part 401 and allows the opening between the two limiting flanges 209 to extend out of the plug-in receiving groove 206 for inserting into the corresponding plug-in receiving groove 206 of the external structural beam 3.

[0048] In the utility model, the connecting piece 4 is L-shaped, and the plug-in receiving groove arranged can accelerate the lapping speed of the longitudinal beam and the cross beam, when the cross beam needs to be lapped, only the connecting piece 4 is inserted into the plug-in receiving groove and slid to the specified position of lapping, and the cross beam can be lapped, and the lapping efficiency of the longitudinal beam and the cross beam is greatly improved.

[0049] A plurality of connecting pieces can be arranged in a plug-in receiving groove, so that the structural beam of the utility model can be connected with the external structural beam at the length position thereof. The mounting position can be reserved on the fixed position of the outer cover, and the mounting hole is reserved on the mounting position. When the body connecting plate body part of the connecting piece is moved to the mounting position, it can be locked by the fastening bolt, and then the end of the external structural beam is correspondingly mounted on the mounting position, so that the external connecting plate body part of the connecting piece is inserted into the corresponding plug-in receiving groove of the external structural beam from the end of the external structural beam. Similarly, the connection and fastening of the connecting piece and the external structural beam can also be realized by the fastening bolt.

[0050] In the embodiment, the cavity 210 is arranged between the connecting plate body part 205 and the extension plate body part 202. The structure of the cavity 210 can form a buffering effect and can be used for slowly dissipating energy. Specifically, when colliding with external objects or strong winds, due to the effect of the cavity 210 of the outer cover 2, the collision energy can be slowly dissipated by extruding the cavity 210, that is, the energy generated by the collision is slowly released through the deformation of the cavity 210, thereby protecting the stability of the structure of the structural beam and the safety of the person below the beam body. Compared with the existing steel beam component directly contacting and absorbing energy, the energy dissipation mode can effectively avoid the internal steel main support from being damaged due to impact, thereby ensuring the carrying capacity and stability of the whole structural beam and improving the safety of the whole structural beam.

[0051] In the embodiment, the keel body 1 is made of steel material, and the outer cover 2 is made of aluminum alloy material. This makes the structural beam of the utility model form an aluminum-clad steel structure as a whole, and the steel material keel body 1 can ensure the structural strength of the overall structural beam, and the outer cover 2 of the aluminum alloy material can not only ensure the connection with the external structural beam 3, but also has a certain ornamental value for the erected horizontal longitudinal beam due to the metallic luster of aluminum itself, can be more coordinated with the surrounding buildings, and has high aesthetic degree. In addition, the outer cover 2 of the aluminum alloy material can form good protection for the keel body 1, prevent the erosion of the external environment on the internal keel body 1, thereby ensuring the structural strength of the overall structural beam and prolonging the service life of the structural beam. Moreover, the aluminum shell can reduce the noise generated by interaction when encountering external harsh environment, and avoid affecting the people around the environment.

[0052] In the embodiment, the outer cover 2 further comprises a side cover plate 211, the upper part of the side cover plate 211 is clamped with the top plate body part 201, and the lower part is clamped on the abutting plate body part 204; the outer cover 2 further comprises a folded edge plate body part 212 formed by being bent downward from the side edge of the abutting plate body part 204, and the horizontal receiving part 102 of the keel body 1 is received between the two side folded edge plate body parts 212; the outer cover 2 further comprises a bottom cover plate 213, which can be clamped on the two side folded edge plate body parts 212.

[0053] In the embodiment, the top plate body part is provided with two upper limiting plate body parts which are arranged side by side and extend upward, the outer cover further comprises an upper cover plate, the upper cover plate can be clamped on the two upper limiting plate body parts, and a space for receiving an external shielding member is formed between the upper cover plate and the top plate part. When installed, the edge of the external shielding member (such as transparent glass) will be supported on the upper side of the top plate body part, and be limited transversely by the upper limiting plate body parts, then the upper cover plate will clamp the external shielding member by clamping with the upper limiting plate body parts, so that the external shielding member is fixed on the structural beam of the utility model.

[0054] The utility model discloses a kind of buildings with cantilever protective sheds, as shown in figure Figure 5 The outer cover 2 is made of aluminum alloy material. The outer cover 2 of the aluminum alloy material can not only ensure the connection with the external structural beam 3, but also has a certain ornamental value for the erected horizontal longitudinal beam due to the metallic luster of aluminum itself, can be more coordinated with the surrounding buildings, and has high aesthetic degree. In addition, the outer cover 2 of the aluminum alloy material can form good protection for the keel body 1, prevent the erosion of the external environment on the internal keel body 1, thereby ensuring the structural strength of the overall structural beam and prolonging the service life of the structural beam.

[0055] Finally, it is explained that the above embodiments are only used to illustrate the technical solutions of the present application and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced by equivalents without departing from the purpose and scope of the present application. The technical solutions of the present application should be covered in the scope of the claims of the present application.

Claims

1. A structural beam, characterized by The structure beam comprises a keel body and an outer cover, the outer cover is capable of being attached to the keel body in a plug-in manner and forms a covering outside the keel body after the plug-in.

2. The structural beam of claim 1, wherein, The keel body comprises a vertical plug-in part, the outer cover comprises a top plate body part and a plug-in part connected to the top plate body part, the plug-in part has an opening downward and is capable of accommodating the plug-in groove of the vertical plug-in part.

3. The structural beam of claim 2, wherein, The plug-in part comprises an upper top part and two extension plate body parts arranged oppositely and extending downward from the side edges of the upper top part, the height position of the upper top part is higher than that of the top plate body part, and the plug-in groove is formed by the space between the upper top part and the two extension plate body parts.

4. The structural beam of claim 3, wherein, The keel body further comprises a horizontal receiving part connected to the lower end of the vertical plug-in part and forming an inverted T-shaped structure with the vertical plug-in part, and the outer cover further comprises two abutting plate body parts formed by bending the lower ends of the two extension plate body parts in the horizontal direction and extending away from each other, the two abutting plate body parts are capable of abutting on the horizontal receiving part on both sides of the vertical plug-in part of the keel body respectively.

5. The structural beam of claim 4, wherein, The outer cover further comprises a connecting plate body part parallel to the extension plate body part, one connecting plate body part is arranged between the top plate body part and the abutting plate body part on both sides of the plug-in part respectively, and the connecting part is configured on the connecting plate body part.

6. The structural beam of claim 5, wherein, The connecting part is configured with a plug receiving groove extending in the length direction of the connecting plate body part, the outer side of the connecting plate body part is provided with a lower constraint part, and the lower side of the top plate body part is formed with an upper constraint part, the upper constraint part, the lower constraint part and the connecting plate body part jointly form the plug receiving groove.

7. The structural beam of claim 6, wherein, The structure beam further comprises a connecting piece, the connecting piece comprises a body connecting plate body part and an external connecting plate body part in an L-shaped structure, the body connecting plate body part is capable of being received in the corresponding plug receiving groove and is capable of moving along the plug receiving groove, and the width of the external connecting plate body part is configured to be smaller than the width of the body connecting plate body part and allows the opening between the two limiting flanges to extend out of the plug receiving groove for inserting into the corresponding plug receiving groove of the external structure beam.

8. The structural beam according to any one of claims 1-7, characterized in that, The keel body is made of steel material, and the outer cover is made of aluminum alloy material.

9. The structural beam of claim 8, wherein, The outer cover further comprises a side cover plate, the upper part of the side cover plate is clamped to the top plate body part, and the lower part is clamped to the abutting plate body part. The outer cover further comprises a folded edge plate body part formed by bending and extending downward from the side edges of the abutting plate body part, and the horizontal receiving part of the keel body is received between the two side folded edge plate body parts; the outer cover further comprises a bottom cover plate capable of being clamped to the two side folded edge plate body parts. The top plate body part is provided with two upper limiting plate body parts extending upward and arranged side by side, the outer cover further comprises an upper cover plate capable of being clamped to the two upper limiting plate body parts, and a space for receiving an external shielding member is formed between the upper cover plate and the top plate body part.

10. A building overhang protection canopy characterized by, The structure beam comprises a keel body and an outer cover, the outer cover is capable of being attached to the keel body in a plug-in manner and forms a covering outside the keel body after the plug-in.

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