Bearing device of protective shed and protective shed structure
By using a combination of portal frames and brackets in bridge construction, the inconvenience and safety hazards of column-supported protective canopies were solved, enabling convenient and efficient installation and dismantling of protective canopies and reducing construction risks.
Patent Information
- Application Number
- CN202520443188.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-13
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-13
AI Technical Summary
In existing technologies, due to limited space during bridge construction, using columns to support protective canopies presents inconvenience and safety hazards.
The system employs a combination of portal frames and brackets. The portal frames are fitted onto the outside of the cap beam, while the brackets are located on the opening side of the portal frames to support the protective canopy, replacing column supports, reducing the installation height of the protective canopy, and simplifying the construction process.
It improves the ease of installation and safety of protective sheds at bridge construction sites, saves space, and reduces construction safety hazards.
Smart Images

Figure CN223867115U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bridge engineering, and in particular to a support device and structure for a protective canopy. Background Technology
[0002] Because bridge construction across existing highways will result in situations where construction is carried out on the upper level while traffic flows underneath, it is necessary to erect protective sheds within the construction impact area to protect the existing highway before commencing upper level construction. Current technology generally involves erecting columns to support the protective sheds, but bridge construction sites often have limited space, and there are significant inconveniences and safety hazards in the erection or dismantling of columns and protective sheds. Utility Model Content
[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology, which generally uses the erection of columns to support the protective shed. However, the construction site of bridges is often limited in space, and there are great inconveniences and safety hazards in the process of erecting or dismantling the columns and protective sheds. This utility model provides a support device and structure for the protective shed.
[0004] In a first aspect, the present invention provides a support device for a protective shed, comprising a portal frame and a bracket, wherein the width of the portal frame is adapted to the width of the cover beam along the longitudinal direction of the bridge, the portal frame is used to be fitted onto the outside of the cover beam, the bracket is disposed on the outside of the portal frame, and the bracket is located near the opening side of the portal frame.
[0005] The portal frame includes horizontal bars and vertical bars. When the portal frame is placed on the cap beam, the horizontal bars extend in a direction parallel to the longitudinal direction of the cap beam, so that the bottom surface of the horizontal bars contacts the top surface of the cap beam. The vertical bars extend downward in a vertical direction. The vertical bars are installed on two sides of the cap beam in the longitudinal direction.
[0006] The connection between the bracket and the vertical rod can be set as a welding connection, a riveting connection, or a bolt connection, etc., and the bracket can be set as a cuboid component, a rectangular plate, or a circular plate, etc.
[0007] The opening side of the supporting device of the protective shed is the end of the two vertical poles away from the horizontal pole.
[0008] The protective canopy can be connected to the bracket by means of erection or binding.
[0009] By placing the bracket near the opening side of the portal frame, the installation height of the protective canopy is reduced when it is installed on the device, thereby reducing the likelihood of the protective canopy obstructing the cap beam and facilitating on-site construction operations.
[0010] Both the portal frame and the bracket can be made of steel or iron components, etc.
[0011] This design allows the portal frame to be fitted onto the outside of the cap beam, and the protective canopy to be erected on the bracket. This replaces the existing method of supporting the protective canopy by erecting columns, avoiding the need to lift or lower the columns when erecting and dismantling the protective canopy. It improves the convenience of installing and dismantling the protective canopy at the bridge construction site, reduces the safety hazards of installing and dismantling the protective canopy at the bridge construction site, and saves space at the bridge construction site.
[0012] Preferably, the portal frame includes a first horizontal bar and two vertical bars. The two ends of the first horizontal bar are respectively connected to the two vertical bars. The bracket is connected to the portal frame through the vertical bars. The ends of the two vertical bars away from the first horizontal bar are connected through a second horizontal bar. The second horizontal bar is detachably connected to the vertical bars.
[0013] The connection method between the first horizontal bar and the vertical bar can be set as welding connection, riveting connection, bolt connection, etc.
[0014] Before the support device of the protective canopy is installed on the cap beam, the second horizontal bar can be removed from the vertical bar, making the installation position of the support device of the protective canopy open. This open side facilitates the installation of the support device of the protective canopy on the cap beam from the open side. When the support device of the protective canopy is installed on the cap beam, the second horizontal bar can be connected to the vertical bar. This setting improves the convenience of installing the support device of the protective canopy. After installation, the two vertical bars can be tightened through the second horizontal bar, making the two vertical bars tend to move closer to each other, which improves the clamping degree of the portal frame on the cap beam, thereby improving the installation stability of the device.
[0015] The connection between the second horizontal bar and the vertical bar can be configured as a snap-fit, bolt connection, or connection through a socket, etc.
[0016] When the second horizontal bar is connected to the vertical bar through a socket, both vertical bars are provided with sockets. The second horizontal bar is connected to the two vertical bars through the sockets, and the vertical bars and the second horizontal bar can be fixed together with bolts.
[0017] The bolted and socketed connections simplify the connection process between the second horizontal bar and the vertical bar, improve assembly efficiency, and reduce loosening caused by vibration or external forces, thus improving connection stability.
[0018] The number of brackets is 2, with one bracket for each of the 2 vertical rods.
[0019] This design allows protective canopies to be erected on both sides of the protective canopy support device, facilitating the continuous construction of protective canopies when they need to be erected between several cap beams.
[0020] The bottom of the bracket is provided with a first stiffening plate, which is connected to the bracket and the corresponding vertical rod respectively.
[0021] By setting the first stiffening plate, the rigidity of the bracket can be improved, making the bracket deform less when bearing load, thereby improving the stability and load-bearing capacity of the structure. At the same time, the stress at the connection between the bracket and the vertical rod is effectively dispersed, avoiding excessive stress concentration, thereby reducing the risk of failure of the connection due to excessive stress.
[0022] The top of the first crossbar is provided with a second stiffening plate, which is connected to the first crossbar and the corresponding vertical bar respectively.
[0023] By setting a second stiffening plate, the stress at the connection between the first horizontal bar and the vertical bar can be effectively dispersed, avoiding excessive stress concentration and thus reducing the risk of damage to the connection due to excessive stress.
[0024] The first horizontal bar, the vertical bar, and the bracket are all I-beams, and the second horizontal bar is a round steel bar.
[0025] I-beams, due to their I-shaped cross-section, have high bending resistance and are suitable for bearing large loads. They can better withstand pressure and shear force and have high bending, torsional and shear resistance. Round steel can undergo large deformations without breaking under stress, allowing it to absorb some energy when subjected to impact or vibration, reducing damage to the device.
[0026] I-beams are used in the main load-bearing parts (first horizontal bar, vertical bar, and bracket) to provide sufficient strength and stability, while round steel is used in the second horizontal bar to reduce the structural weight while ensuring a certain level of strength.
[0027] The first horizontal bar, the vertical bar, the second horizontal bar, and the bracket can also be made of steel plates or rectangular steel bars, etc.
[0028] The vertical bar comprises two sections of I-beams, which are connected to each other laterally along the I-beams.
[0029] By connecting two sections of I-beams laterally, the load-bearing capacity of the vertical members can be further enhanced.
[0030] In a second aspect, the present invention provides a protective shed structure, including a protective shed body and a plurality of supporting devices for the protective shed, wherein the plurality of supporting devices for the protective shed are arranged longitudinally along the cap beam, and the supporting devices for the protective shed are disposed between two adjacent pad stones on the top surface of the cap beam, and the protective shed body is supported on the supporting devices for the protective shed by the bracket.
[0031] This feature improves the ease of setting up protective sheds.
[0032] The protective shed body includes a protective shed frame, which includes several first members arranged along the length of the cap beam and second members arranged along the longitudinal direction of the bridge. The first members are supported by the bracket of the supporting device of the protective shed, and the second members are supported by the first members. The length of the bracket extending out of the portal frame is greater than the width of the first members.
[0033] When the first member is erected on the support bracket of the protective shed on the same side of the cap beam, the first member can simultaneously contact the support brackets of several protective sheds located on the same side of the cap beam. The length direction of the first member can be perpendicular to the direction in which the bracket extends out of the portal frame. By setting the length of the bracket extending out of the portal frame to be greater than the width of the first member, the length direction of the first member can also be at a certain angle to the direction in which the bracket extends out of the portal frame, which improves the fault tolerance rate during the assembly of the protective shed structure and thus improves the convenience of erecting the protective shed.
[0034] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0035] 1. This utility model provides a support device for a protective shed. With this setting, the support device for the protective shed can be hoisted and placed on the cap beam. The direction of the horizontal bar is parallel to the width direction of the cap beam, so that the bottom surface of the first horizontal bar contacts the top surface of the cap beam. The two vertical bars are clamped on the two sides of the cap beam along the length direction of the cap beam. By setting the protective shed on the bracket, the existing solution of supporting the protective shed by erecting columns is replaced. This improves the convenience of setting up the protective shed at the bridge construction site, saves the space of the bridge construction site, reduces the safety hazards of setting up the protective shed at the bridge construction site, and reduces the impact on the on-site construction operation.
[0036] 2. This utility model provides a protective shed structure, which improves the convenience of erecting the protective shed. Attached Figure Description
[0037] Figure 1 This is a three-dimensional schematic diagram of the protective shed support device provided in Embodiment 1 of this utility model.
[0038] Figure 2 This is a three-dimensional schematic diagram of the protective canopy support device of Embodiment 1 of this utility model installed on the cover beam.
[0039] Figure 3 A three-dimensional schematic diagram of the protective canopy structure of Embodiment 2 provided by this utility model (the cover plate is not shown).
[0040] Marked in the image:
[0041] 1-Gantry frame, 11-First horizontal bar, 12-Vertical bar, 2-Bracket, 3-Second horizontal bar, 4-First stiffening plate, 5-Second stiffening plate, 6-Cap beam, 7-Protective canopy, 71-First member, 72-Second member, 8-Slab. Detailed Implementation
[0042] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.
[0043] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.
[0044] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.
[0045] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.
[0046] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.
[0047] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.
[0048] Example 1
[0049] like Figures 1-2 As shown, this embodiment provides a support device for a protective shed, including a portal frame 1 and a bracket 2. The portal frame 1 has a U-shaped structure and is used to be placed on a cover beam 6. The distance between the two sides of the portal frame 1 is adapted to the width of the cover beam 6, so that the two sides of the portal frame 1 can clamp the two sides of the cover beam 6 along the length direction of the cover beam 6. The bracket 2 is disposed on the outside of the portal frame 1, and the bracket 2 is located near the opening side of the portal frame 1.
[0050] The portal frame 1 has a portal-shaped structure, that is, the portal frame 1 includes a horizontal bar and two vertical bars 12 respectively set vertically at both ends of the horizontal bar. When the portal frame 1 is placed on the cap beam 6, the horizontal bar extends in a direction parallel to the width direction of the cap beam 6, the bottom surface of the horizontal bar contacts the top surface of the cap beam 6, and the two vertical bars 12 extend downward in a vertical direction and are clamped on the two sides of the cap beam 6 along the length direction of the cap beam 6.
[0051] The bracket 2 and the vertical rod 12 are connected by welding. The bracket 2 can be provided with a cuboid component. One end of the bracket 2 is connected to the vertical rod 12 and the length direction of the bracket 2 is away from the vertical rod 12.
[0052] The opening side of the supporting device of the protective shed is the end of the two vertical rods 12 away from the horizontal rod.
[0053] By placing the bracket 2 near the opening side of the portal frame 1, when the protective canopy is installed on the device, the top surface of the protective canopy is lower than the top surface of the cap beam 6, which also reduces the chance of the protective canopy obstructing the cap beam 6 and facilitates on-site construction operations.
[0054] Both the portal frame 1 and the bracket 2 are made of steel.
[0055] With this setup, the support device for the protective shed can be hoisted and placed on the cap beam 6. The direction of the horizontal bar extension is parallel to the width direction of the cap beam 6, so that the bottom surface of the first horizontal bar 11 contacts the top surface of the cap beam 6. The two vertical bars 12 are clamped on the two sides of the cap beam 6 along the length direction of the cap beam 6. By setting the protective shed on the bracket 2, the existing technology of supporting the protective shed by erecting columns is replaced, which improves the convenience of setting up the protective shed at the bridge construction site, saves the space of the bridge construction site, reduces the safety hazards of setting up the protective shed at the bridge construction site, and reduces the impact on on-site construction operations.
[0056] The first horizontal bar 11 and the vertical bar 12 are connected by screws.
[0057] The portal frame 1 includes a first horizontal bar 11 and two vertical bars 12. The two ends of the first horizontal bar 11 are respectively connected to the two vertical bars 12. The bracket 2 is connected to the portal frame 1 through the vertical bars 12. The ends of the two vertical bars 12 away from the first horizontal bar 11 are connected through a second horizontal bar 3. The second horizontal bar 3 is detachably connected to the vertical bars 12.
[0058] Before the support device of the protective shed is installed on the cover beam 6, the second horizontal bar 3 can be removed from the vertical bar 12, so that the installation position of the support device of the protective shed at the second horizontal bar 3 is open. This makes it easier for the support device of the protective shed to be installed on the cover beam 6 from the open side. When the support device of the protective shed is installed on the cover beam 6, the second horizontal bar 3 can be connected to the vertical bar 12. This setting improves the convenience of installing the support device of the protective shed, and the second horizontal bar 3 improves the installation stability of the device after installation.
[0059] The second horizontal bar 3 is connected to the vertical bar 12 through a socket. Both vertical bars 12 are provided with sockets, and the second horizontal bar 3 is connected to the two vertical bars 12 through the sockets.
[0060] The socket connection method simplifies the connection process between the second horizontal bar 3 and the vertical bar 12, improves assembly efficiency, and reduces the loosening of the connection caused by vibration or external force, thereby improving the stability of the connection.
[0061] Nuts and washers are respectively fitted at both ends of the second crossbar 3.
[0062] The second crossbar 3 can also be screwed with a nut. When the second crossbar 3 is installed on the vertical bar 12, the cooperation of the nut and the washer can provide a more reliable fastening force, ensuring that the connection between the second crossbar 3 and the vertical bar 12 is more secure and reducing the occurrence of loosening or falling off during use.
[0063] There are two brackets 2, with one bracket 2 on each of the two vertical rods 12.
[0064] This design allows protective sheds to be erected on both sides of the protective shed support device. When the protective shed needs to be erected between several cap beams 6, it facilitates the continuous construction of the protective shed.
[0065] The bottom of the bracket 2 is provided with a first stiffening plate 4, which is connected to the bracket 2 and the corresponding vertical rod 12 respectively.
[0066] By setting the first stiffening plate 4, the rigidity of the bracket 2 can be improved, so that the bracket 2 deforms less when bearing load, thereby improving the stability and load-bearing capacity of the structure. At the same time, the stress at the connection between the bracket 2 and the vertical rod 12 is effectively dispersed to avoid excessive stress concentration, thereby reducing the risk of failure of the connection due to excessive stress.
[0067] The top of the first horizontal bar 11 is provided with a second stiffening plate 5, which is connected to the first horizontal bar 11 and the corresponding vertical bar 12 respectively.
[0068] By setting the second stiffening plate 5, the stress at the connection between the first horizontal bar 11 and the vertical bar 12 can be effectively dispersed, avoiding excessive stress concentration and thus reducing the risk of damage to the connection due to excessive stress.
[0069] The first horizontal bar 11, the vertical bar 12 and the bracket 2 are all I-beams, and the second horizontal bar 3 is a threaded round bar.
[0070] Threaded round steel bars allow for easy connection between the round steel bars and bolts through the threaded opening.
[0071] I-beams, due to their I-shaped cross-section, have high bending resistance and are suitable for bearing large loads. They can better withstand pressure and shear force and have high bending, torsional and shear resistance. Round steel can undergo large deformations without breaking under stress, allowing it to absorb some energy when subjected to impact or vibration, reducing damage to the device.
[0072] I-beams are used in the main load-bearing parts (first horizontal bar 11, vertical bar 12 and bracket 2) to provide sufficient strength and stability, while round steel is used in the second horizontal bar 3 to reduce the structural weight while ensuring a certain strength.
[0073] The vertical rod 12 includes two sections of I-beams, which are connected to each other along the flanges of the I-beams.
[0074] By connecting the two sections of the I-beam along the flanges of the I-beam, the load-bearing capacity of the vertical member 12 can be further enhanced.
[0075] Example 2
[0076] As attached Figure 3 As shown, this embodiment provides a protective shed structure, including a protective shed body and a plurality of supporting devices for the protective shed. The plurality of supporting devices for the protective shed are arranged longitudinally along the cap beam 6, and the supporting devices for the protective shed are located between two adjacent pad stones 8 on the top surface of the cap beam 6. The protective shed body is supported on the supporting devices for the protective shed by the bracket 2.
[0077] The length of the vertical rod 12 is slightly greater than the thickness of the cap beam 6, so that the vertical rod 12 can extend out of the bottom surface of the cap beam. This allows the second horizontal rod 3 to pass through the two vertical rods along the bottom surface of the cap beam 6, enabling the portal frame 1 to enclose the cap beam 6 and improving the stability of the portal frame 1 installed on the cap beam 6.
[0078] The protective shed support devices are staggered with the pad stones 8 on the cap beam 6, which reduces the degree of interference of the protective shed support devices with the construction.
[0079] This setup improves the convenience of erecting protective sheds.
[0080] The protective shed body includes a protective shed frame 7. The protective shed frame 7 includes several first rods 71 arranged along the length of the cover beam 6 and second rods 72 arranged along the longitudinal direction of the bridge. The first rods 71 are supported by the brackets 2 of the supporting device of the protective shed, and the second rods 72 are supported by the first rods 71. The length of the brackets 2 extending out of the portal frame 1 is greater than the width of the first rods 71.
[0081] The first member 71 is erected on the bracket 2 of the protective canopy support device located on the same side of the cap beam 6. One end of the second member 72 is erected on the first member 71 and the other end is erected on the first member set on another cap beam 6. At the same time, the length of the first member 71 is greater than the length of the cap beam 6. The part that exceeds the length of the cap beam 6 can still be used to erect the second member 72, so that the two ends of the cap beam 6 are also provided with protective canopy frames 7. That is, the protective canopy frames 7 can be set around the cap beam 6. In this way, the protective canopy frames 7 are continuously set along the longitudinal direction of the bridge.
[0082] The bracket 2 is located at one-third of the lower end of the vertical rod, that is, the length of the vertical rod 12 is 3 meters. The bracket 2 is set at 1 meter of the lower end of the vertical rod 12, with the lower end of the vertical rod 12 as the origin.
[0083] The protective shed body includes a cover plate (not shown in the figure), which is mounted on the protective shed frame 7 and is made of plastic.
[0084] When the first member 71 is erected on the bracket 2 of the protective shed support device on the same side of the cap beam 6, the first member 71 can simultaneously contact several brackets 2 of the protective shed support devices located on the same side of the cap beam 6. The length direction of the first member 71 can be perpendicular to the direction in which the bracket 2 extends out of the portal frame 1. By setting the length of the bracket 2 extending out of the portal frame 1 to be greater than the width of the first member 71, the length direction of the first member 71 can also be at a certain angle to the direction in which the bracket 2 extends out of the portal frame 1, which improves the fault tolerance rate during the assembly of the protective shed structure and thus improves the convenience of erecting the protective shed frame 7.
[0085] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A support device for a protective shed, characterized in that, It includes a portal frame (1) and a bracket (2). The width of the portal frame (1) is adapted to the width of the cap beam (6) along the longitudinal direction of the bridge. The portal frame (1) is used to be fitted on the outside of the cap beam (6). The bracket (2) is set on the outside of the portal frame (1) and the bracket (2) is located near the opening side of the portal frame (1).
2. The supporting device for a protective shed according to claim 1, characterized in that, The portal frame (1) includes a first horizontal bar (11) and two vertical bars (12). The two ends of the first horizontal bar (11) are connected to the two vertical bars (12) respectively. The bracket (2) is connected to the portal frame (1) through the vertical bars (12). The ends of the two vertical bars (12) away from the first horizontal bar (11) are connected through a second horizontal bar (3). The second horizontal bar (3) is detachably connected to the vertical bars (12).
3. The supporting device for a protective shed according to claim 2, characterized in that, Both of the vertical rods (12) are provided with insertion holes, and the second horizontal rod (3) is connected to the two vertical rods (12) through the insertion holes.
4. A support device for a protective shed according to claim 2 or 3, characterized in that, The number of brackets (2) is 2, and each of the 2 vertical rods (12) is provided with one of the brackets (2).
5. The supporting device for a protective shed according to claim 4, characterized in that, The bottom of the bracket (2) is provided with a first stiffening plate (4), which is connected to the bracket (2) and the corresponding vertical rod (12) respectively.
6. The supporting device for a protective shed according to claim 4, characterized in that, The top of the first horizontal bar (11) is provided with a second stiffening plate (5), which is connected to the first horizontal bar (11) and the corresponding vertical bar (12) respectively.
7. The supporting device for a protective shed according to claim 4, characterized in that, The first horizontal bar (11), the vertical bar (12) and the bracket (2) are all I-beams, and the second horizontal bar (3) is a round bar.
8. The supporting device for a protective shed according to claim 7, characterized in that, The vertical rod (12) includes two sections of I-beams, which are connected to each other in the transverse direction of the I-beams.
9. A protective shed structure, characterized in that, The protective shed includes a protective shed body and several supporting devices for the protective shed as described in any one of claims 1-8. The supporting devices for the protective shed are arranged longitudinally along the cover beam (6), and the supporting devices for the protective shed are located between two adjacent pad stones (8) on the top surface of the cover beam (6). The protective shed body is supported on the supporting devices for the protective shed by the bracket (2).
10. A protective shed structure according to claim 9, characterized in that, The protective shed body includes a protective shed frame (7), the protective shed frame (7) includes several first rods (71) arranged along the length direction of the cap beam (6) and second rods (72) arranged along the longitudinal direction of the bridge. The first rods (71) are erected on the brackets (2) of the supporting device of the protective shed, and the second rods (72) are erected on the first rods (71). The length of the brackets (2) extending out of the portal frame (1) is greater than the width of the first rods (71).