Precast beam protective shed

Abstract

The utility model relates to the technical field of precast beam construction equipment, and provides a precast beam protective shed which comprises a shed body frame, a shed top layer and an outer side shed wall. The bottom of the shed body frame is connected with supporting legs, and the top of the shed body frame is provided with a hoisting structure which is suitable for being connected with hoisting equipment. The shed top layer is laid on the top of the shed body frame. The outer side shed wall surrounds the periphery of the shed body frame, and the space defined by the shed body frame, the shed top layer and the outer side shed wall in a precast beam formwork pouring area is closed. The precast beam protective shed provided by the utility model can be directly hoisted to a construction site, so that early-stage building and subsequent dismantling work are omitted, and the protection work of the precast beam can be realized more simply and conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of equipment for prefabricated beam construction, in particular to a prefabricated beam protection shed. Background Art

[0002] At present, the construction method of prefabricated beam production and assembly is widely used in the construction of bridges, railways and other projects in my country. Prefabricated beams are easily affected by the environment during the production process of beam making sites. For example, if there is sudden rain during the concrete pouring process or the weather is too hot and the sun shines directly on the concrete, it will affect the quality of the concrete and have an adverse effect on the performance of the prefabricated beams.

[0003] In the related art, sometimes construction is avoided on rainy days or at different time periods to minimize the adverse effects of rain or direct sunlight on concrete, but the above methods will seriously affect the construction progress; therefore, sometimes a protective shed is built in the beam manufacturing site for protection, but the construction and subsequent dismantling of the protective shed are cumbersome.

[0004] Therefore, how to simply and conveniently realize the protection of prefabricated beams is an important issue that needs to be solved urgently. Utility Model Content

[0005] The utility model provides a prefabricated beam protection shed, which is used to effectively solve the defects of the prior art that the early stage construction and later stage demolition of the protection shed are complicated, and can simply and conveniently realize the protection work of the prefabricated beams.

[0006] The utility model provides a prefabricated beam protection shed, comprising: a shed body frame, a shed top layer and an outer shed wall;

[0007] The bottom of the shed frame is connected with supporting legs, and the top is provided with a lifting structure, and the lifting structure is suitable for connecting with lifting equipment;

[0008] The top layer of the shed is laid on the top of the shed body frame;

[0009] The outer shed wall surrounds the shed body frame on all sides, and the space enclosed by the shed body frame, the shed top layer and the outer shed wall in the prefabricated beam formwork casting area is closed.

[0010] According to a prefabricated beam protection shed provided by the utility model, the shed body frame includes a shed roof frame, and the shed top layer is laid on the shed roof frame; the shed roof frame includes:

[0011] A plurality of arch frames are arranged at intervals along a first direction, and in a second direction, the height of the top of the arch frames gradually decreases from the middle to both sides, and the second direction is perpendicular to the first direction;

[0012] The main beams are arranged on both sides of the arch frame along the second direction, the main beams extend along the first direction, and a plurality of the arch frames are connected into a whole through the main beams;

[0013] The purlins are connected to the tops of the arch frames, the purlins extend along the first direction, and a plurality of the purlins are arranged at intervals in the second direction.

[0014] According to a precast beam protection shed provided by the present utility model, the shed top frame further includes:

[0015] The tie bars are connected to the tops of the arch frames, the tie bars extend along the second direction, and a plurality of the tie bars are arranged at intervals along the first direction. A plurality of the purlins are connected into a whole through the tie bars.

[0016] According to a precast beam protection shed provided by the present utility model, the shed top frame further includes:

[0017] The strengthening beams extend along the first direction and are arranged at intervals along the second direction. A plurality of the arch frames are fixedly connected to the strengthening beams.

[0018] According to a precast beam protection shed provided by the present utility model, the shed body frame further includes a side frame, the outer shed wall is laid on the side frame, and the side frame includes:

[0019] The columns are arranged outside the shed top frame, and a plurality of the columns are arranged at intervals along the first direction and the second direction. The tops of the columns are fixedly connected to the shed top frame;

[0020] The cross beams are perpendicularly and fixedly connected to the columns.

[0021] According to a precast beam protection shed provided by the present utility model, the legs are fixedly connected to the bottom ends of the columns and are adapted to be supported on the support points of the precast beam formwork.

[0022] According to a precast beam protection shed provided by the present utility model, it further includes a diagonal brace, one end of the diagonal brace is connected to the shed body frame, and the other end is used for connecting to the precast beam formwork.

[0023] According to a precast beam protection shed provided by the present utility model, the lifting structure includes a lifting beam and lifting bars;

[0024] The lifting beam is arranged at the middle position of the arch frame and extends along the first direction;

[0025] The lifting bars are used for connecting the lifting beam and the shed top frame. A plurality of lifting points are arranged on the lifting beam, and the plurality of lifting points are symmetrically arranged with the midpoint of the lifting beam along the first direction as the center.

[0026] A precast beam protective shed provided by the present utility model further includes a ladder disposed on the shed top layer, and the ladder extends from one side of the shed top layer in the second direction to the position of the lifting structure.

[0027] A precast beam protective shed provided by the present utility model, the shed top layer includes color steel tiles, and the outer shed wall includes foam insulation boards.

[0028] During construction of the precast beam protective shed provided by the present utility model, a hoisting device is used to connect the lifting structure at the top of the protective shed to hoist the protective shed to a preset position in the beam yard. The shed top layer can provide protection for the top of the protective shed, and the outer shed wall can provide protection for the side of the protective shed. The construction of the precast beam is carried out within the space enclosed by the shed top layer and the outer shed wall. In this way, the damage to the concrete caused by rain or direct sunlight is effectively avoided; when the construction temperature is low in winter, the shed top layer and the outer shed wall can also play a certain heat preservation effect, ensuring the construction temperature inside the shed and reducing the adverse impact of low temperature on the concrete. In addition, due to the enclosed environment provided by the shed top layer and the outer shed wall, the protective shed can also be used as a steam curing shed, and the concrete can enter the steam curing stage after pouring, which is beneficial to improving the strength of the concrete. Compared with the related technology, the protective shed can be directly hoisted to the construction site, eliminating the previous construction and subsequent demolition work, and can more simply and conveniently realize the protection work of the precast beam. Description of the Drawings

[0029] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0030] Figure 1 It is the front view of the precast beam protective shed provided by the embodiment of the present utility model.

[0031] Figure 2 It is Figure 1 The sectional view of the precast beam protective shed along the A-A direction in

[0032] Figure 3 It is Figure 1 The sectional view of the precast beam protective shed along the B-B direction in

[0033] Figure 4 It is the top view of the precast beam protective shed provided by the embodiment of the present utility model.

[0034] Reference Signs:

[0035] 10. Roof frame; 100. Arch frame; 101. Main beam; 102. Slats; 103. Reinforcement beam; 11. Side frame; 110. Columns; 111. Crossbeam; 12. Top roof; 13. Outer wall; 14. Legs; 15. Lifting structure; 16. Diagonal brace; 17. Ladder; 20. Support point. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] In order to facilitate understanding of the prefabricated beam protection shed provided by the utility model, its application background is first introduced. Prefabricated beams, as a prefabricated component, are widely used in bridges, railways and other projects. Prefabricated beams are easily affected by the environment during the production process. For example, sudden rain or overheated weather and direct sunlight on the concrete during the concrete pouring process will affect the quality of the concrete and have an adverse effect on the performance of the prefabricated beams.

[0038] In the related technology, sometimes construction is avoided on rainy days or during staggered time periods to minimize the adverse effects of rain or direct sunlight, but the above methods will seriously affect the construction progress; sometimes a protective shed is built at the beam manufacturing site for protection, but the early construction and later removal of the protective shed are cumbersome. Therefore, how to simply and conveniently realize the protection of prefabricated beams is an important issue that needs to be solved urgently.

[0039] In view of the above problems, the utility model provides a prefabricated beam protection shed, which can simply and conveniently realize the protection work of the prefabricated beams.

[0040] Combine the following Figures 1 - 4 The utility model is described as a prefabricated beam protection shed.

[0041] Reference Figure 1 and Figure 2 A prefabricated beam protection shed includes a shed frame, a shed top layer 12 and an outer shed wall 13; wherein the shed frame constitutes the skeleton of the protection shed, and its bottom is connected with a support leg 14, and the top is connected with a lifting structure 15, and the lifting structure 15 is used to connect with the lifting equipment; the shed top layer 12 is laid on the top of the shed frame; the outer shed wall 13 is surrounded by the shed frame, and the space enclosed by the shed frame, the shed top layer 12 and the outer shed wall 13 is closed in the prefabricated beam formwork casting area.

[0042] During actual construction, a hoisting device is used to connect the hoisting structure 15 at the top of the protective shed to hoist the protective shed to the preset position in the beam yard. The top layer 12 of the shed can provide protection for the top of the protective shed, and the outer shed wall 13 can provide protection for the side of the protective shed. The construction of the precast beam is carried out in the space enclosed by the top layer 12 of the shed and the outer shed wall 13. In this way, the damage to the concrete caused by rain or direct sunlight is effectively avoided. When the construction temperature is low in winter, the top layer 12 of the shed and the outer shed wall 13 can also play a certain heat preservation effect, ensuring the construction temperature in the shed and reducing the adverse impact of low temperature on the concrete. In addition, due to the closed environment provided by the top layer 12 of the shed and the outer shed wall 13, the protective shed can also be used as a steam curing shed. After the concrete is poured, it can enter the steam curing stage, which is beneficial to improving the strength of the concrete. Compared with the related technology, the protective shed can be directly hoisted to the construction site, eliminating the previous construction and subsequent demolition work, and can more simply and conveniently realize the protection work of the precast beam.

[0043] In one embodiment of the present invention, referring to Figures 1 to 3 , the shed body frame includes a shed top frame 10 and a side frame 11; wherein, the shed top frame 10 constitutes the top support of the protective shed, and the top layer 12 of the shed is laid on the shed top frame 10. Specifically, the shed top frame 10 includes arch frames 100, main beams 101 and purlins 102; wherein, a plurality of arch frames 100 are arranged at intervals along the first direction x, and in the second direction y, the height of the top of the arch frames 100 gradually decreases from the middle to both sides. The second direction y is perpendicular to the first direction x; the main beams 101 are arranged on both sides of the arch frames 100 along the second direction y, and the main beams 101 extend along the first direction x. A plurality of arch frames 100 are connected into a whole through the main beams 101; the purlins 102 are connected to the tops of the arch frames 100, and the purlins 102 extend along the first direction x and are arranged at intervals in the second direction y.

[0044] More specifically, the above-mentioned first direction x is the length direction of the shed top frame 10, and the second direction y is the width direction of the shed top frame 10, and also the width direction of the arch frames 100. Through the arch frames 100 with gradually decreasing height from the middle to both sides, the top layer 12 of the shed presents a structure that is high in the middle and low on both sides, which is beneficial to ensuring the drainage effect of the shed top.

[0045] The specific material, structure and forming method of the arch frames 100 can be selected according to actual needs. For example, the arch frames 100 can be formed by welding steel pipes or other profiles. Its cross-section can be triangular or arc-shaped. Diagonal bracing beams, strengthening rods and other strengthening members can also be connected between the profiles to ensure the structural strength of the arch frames 100. In addition, the length, height, layout quantity of the arch frames 100 and the distance between adjacent arch frames 100 can all be flexibly designed in combination with the actual working conditions, and no specific restrictions are made in the embodiments of the present invention.

[0046] There are two main beams 101, which are distributed on both sides of the arch frame 100 along the length direction. The main beam 101 is arranged along the first direction x and is fixedly connected to a plurality of arch frames 100 at the same time. For example, it can be fixed by welding. In this way, a plurality of arch frames 100 are connected into a whole through the main beam 101. The specific material, structure and forming method of the main beam 101 can be designed according to actual needs. In this embodiment, the main beam 101 is set as a rectangular truss structure, which is formed by welding square steel. In addition, diagonal bracing beams, reinforcing bars and other reinforcing members can be connected in the main beam 101 to ensure the structural strength of the main beam 101.

[0047] The specific material and structure of the purlin 102 can also be configured according to actual needs. For example, metal profiles can be selected as the purlin 102. The purlin 102 is fixedly connected to the top of the arch frame 100. Specifically, welding can be used, or connecting members such as angle steel and bolts can be used for connection. In addition, the specific number of the purlins 102 and the spacing between two adjacent purlins 102 can be flexibly designed according to actual needs, such as the length and strength requirements of the arch frame 100. In this embodiment, square steel is used as the purlin 102, and the purlin 102 is fixedly connected to the arch frame 100 by welding, and the spacing between two adjacent purlins 102 is 1.4 meters.

[0048] In an embodiment of the present utility model, the shed top frame 10 further includes tension bars connected to the top of the arch frame 100. The tension bars extend along the second direction y, and a plurality of them are arranged at intervals along the first direction x. A plurality of purlins 102 are connected into a whole through the tension bars. Through the tension bars, the purlins 102 at the top of the arch frame 100 can be connected into a whole, thereby further improving the structural strength of the shed top frame 10. Specifically, the tension bars are made of steel bars.

[0049] In an embodiment of the present utility model, the shed top frame 10 further includes a strengthening beam 103. The strengthening beam 103 extends along the first direction x and is arranged at intervals along the second direction y. A plurality of arch frames 100 are fixedly connected to the strengthening beam 103 at the same time, thereby further improving the structural strength of the shed top frame 10. The specific material, structure, arrangement quantity and interval of the strengthening beam 103 can be designed according to actual needs. In this embodiment, the strengthening beam 103 is made of steel pipe, and three of them are arranged at intervals along the second direction y. The strengthening beam 103 is fixedly connected to the arch frame 100 by welding.

[0050] Through the above technical solutions, the structure of the shed top frame 10 is formed. The shed top layer 12 is laid on the shed top frame 10. Specifically, the shed top layer 12 can be made of color steel tiles. Of course, according to different needs, other materials can also be selected for the shed top layer 12. For example, when the heat preservation performance requirements of the protective shed are relatively high, some composite boards with better heat preservation performance can also be used for the shed top layer 12.

[0051] The side frame 11 constitutes the side support of the protective shed, and can provide an installation foundation for the outer shed wall 13, and the outer shed wall 13 is laid on the side frame 11.

[0052] In an embodiment of the present utility model, the side frame 11 includes columns 110 and cross beams 111. Among them, the columns 110 are arranged on the periphery of the shed top frame 10, and a plurality of them are arranged at intervals along the first direction x and the second direction y. The top ends of the columns 110 are fixedly connected to the shed top frame 10, and the cross beams 111 are perpendicularly and fixedly connected to the columns 110, thereby forming the side frame 11 surrounding the shed top frame 10 on all four sides.

[0053] The number of columns 110 arranged in the first direction x and the second direction y can be selected according to actual needs, but at least four columns 110 are respectively arranged at the four corners of the shed top frame 10, that is, at least two columns 110 are arranged along both the first direction x and the second direction y. Since the first direction x is the length direction of the shed top frame 10 and the length is longer, therefore, the number of columns 110 arranged along the first direction x can be appropriately increased. While the second direction y is the width direction of the shed top frame 10 and the length is shorter, relatively speaking, the number of columns 110 arranged along the second direction y can be appropriately reduced. In the embodiment of the present utility model, the number of columns 110 arranged along the first direction x and the second direction y is not specifically limited.

[0054] In addition, the top end of the column 110 can be fixed to the arch frame 100 or to the cross beam 111. Specifically, it can be flexibly designed according to actual needs. In this embodiment, the top end of the column 110 is fixedly connected to the arch frame 100. Specifically, the column 110 and the arch frame 100 can be fixed by welding.

[0055] Through the cross beam 111 and the column 110, the side frame 11 surrounding the shed top frame 10 on all four sides is formed, and the outer shed wall 13 is connected to the side frame 11. Specifically, the outer shed wall 13 can be made of color steel plate. In the case of higher requirements for heat preservation performance, the outer shed wall 13 can also be made of composite board, foam insulation board or insulation tarpaulin.

[0056] It can be understood that the outer shed wall 13 and the side frame 11 can be connected in a detachable manner to improve the flexibility of application. For example, during construction in summer, it may only be necessary to prevent rain or sun, and at this time, the outer shed wall 13 can be disassembled. When the wind and rain are relatively large or the heat preservation requirements are high during winter construction, the outer shed wall 13 can be connected to the side frame 11 to ensure the heat preservation performance of the protective shed and enable the protective shed to be used as a steam curing shed.

[0057] In one embodiment of the present utility model, the outriggers 14 are fixedly connected to the bottom end of the vertical column 110 and are used to provide bottom support for the protective shed. The specific number and connection position of the outriggers 14 can be selected according to actual needs, but at least four outriggers 14 are respectively connected to the bottom ends of the vertical columns 110 at the four corners of the shed top frame 10 to provide stable support for the protective shed. When the size of the protective shed is large, the number of outriggers 14 can be appropriately increased as long as it can provide stable support for the protective shed.

[0058] Specifically, support points 20 corresponding to the number and position of the outriggers 14 are arranged on or outside the precast beam formwork. When hoisting the protective shed, the outriggers 14 at the bottom of the protective shed are made to correspond to the support points 20, and then the outriggers 14 of the protective shed are supported on the support points 20 to achieve effective protection for the pouring area of the precast beam formwork.

[0059] It can be understood that since the precast beam formwork itself has a certain height, the heights of the outriggers 14 and the support points 20 can be flexibly set so that the protective shed and the precast beam formwork can cooperate better, ensuring that the space enclosed by the shed top layer 12 and the outer shed wall 13 of the protective shed in the pouring area of the precast beam formwork is enclosed.

[0060] More specifically, the support point 20 is arranged in a trough-shaped structure with an upward opening to provide stable support for the outriggers 14 of the protective shed.

[0061] Refer to Figure 2 and Figure 3 , the protective shed further includes a diagonal brace 16. One end of the diagonal brace 16 is connected to the shed body frame, and the other end is used to connect to the precast beam formwork to further improve the stability of the protective shed on the precast beam formwork.

[0062] Specifically, the end of the diagonal brace 16 is connected to the main beam 101 of the shed body frame. The specific connection method between the diagonal brace 16 and the main beam 101 can be selected according to actual needs. For example, connection members such as ear plates and pin shafts or bolts can be used for connection, and no specific limitation is made in this embodiment.

[0063] For the convenience of hoisting, a plurality of lifting points can be arranged on the shed top frame 10, and the plurality of lifting points are symmetrically arranged with the center of the shed body frame 10 as the symmetry point. More specifically, the lifting structure 15 can include a lifting beam and lifting bars; wherein, the lifting beam is arranged at the middle position of the arch frame 100 and extends along the first direction x, and the lifting bars are used to connect the lifting beam and both sides of the protective shed along the second direction y. A plurality of lifting points are arranged on the lifting beam, and the plurality of lifting points are symmetrically arranged with the midpoint of the length of the lifting beam along the first direction x as the center. During hoisting, the hoisting equipment is connected to the plurality of lifting points to achieve stable hoisting of the protective shed.

[0064] Specifically, the lifting bars can be made of φ22mm round steel.

[0065] For the convenience of connecting the hoisting equipment to the lifting points, refer to Figure 4 , the protective shed further includes a ladder 17. The ladder 17 extends from the edge of the top layer 12 of the shed along one side of the second direction y to the middle position, that is, the position of the hoisting structure 15. Workers can reach the position of the hoisting structure 15 along the ladder 17 to more conveniently connect the hoisting equipment and the lifting points.

[0066] Specifically, the ladder 17 is arranged at the middle position of the top layer 12 of the shed in the first direction x. There are two ladders 17, and the two ladders 17 are respectively located on both sides of the top layer 12 of the shed along the second direction y. In the second direction y, the ladder 17 extends towards the middle position of the top layer 12 and reaches the position of the hoisting structure 15.

[0067] It can be understood that, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0068] Through the precast beam protection structure provided by the present utility model, during construction, the hoisting equipment is used to connect the hoisting structure 15 at the top of the protective shed to hoist the protective shed to the preset position in the beam yard. The top layer 12 of the shed can provide protection for the top of the protective shed, and the outer shed wall 13 can provide protection for the side of the protective shed. The construction of the precast beam is carried out in the space enclosed by the top layer 12 of the shed and the outer shed wall 13. In this way, the damage to the concrete caused by rain or direct sunlight is effectively avoided; when the construction temperature is low in winter, the top layer 12 of the shed and the outer shed wall 13 can also play a certain heat preservation effect, ensuring the construction temperature in the shed and reducing the adverse impact of low temperature on the concrete. In addition, due to the closed environment provided by the top layer 12 of the shed and the outer shed wall 13, the protective shed can also be used as a steam curing shed. After the concrete is poured, it can enter the steam curing stage, which is beneficial to improving the strength of the concrete. Compared with the related technology, the protective shed can be directly hoisted to the construction site, eliminating the previous construction and subsequent demolition work, and can more simply and conveniently realize the protection work of the precast beam.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A precast beam protection shed, characterized in that, Comprising: A shed body framework, a shed top layer (12) and an outer shed wall (13); The bottom of the shed body framework is connected with support legs (14), and a lifting structure (15) is arranged at the top, and the lifting structure (15) is suitable for connecting with a hoisting device; The shed top layer (12) is laid on the top of the shed body framework; The outer shed wall (13) is arranged around the shed body framework, and the space enclosed by the shed body framework, the shed top layer (12) and the outer shed wall (13) is closed in the precast beam formwork pouring area.

2. The protective shed according to claim 1, wherein The shed body framework includes a shed top framework (10), and the shed top layer (12) is laid on the shed top framework (10); The shed top framework (10) includes: Arch frames (100), which are arranged at intervals along a first direction, and in a second direction, the height of the top of the arch frames (100) gradually decreases from the middle to both sides, and the second direction is perpendicular to the first direction; Main beams (101), which are arranged on both sides of the arch frames (100) along the second direction, the main beams (101) extend along the first direction, and the plurality of arch frames (100) are connected into a whole through the main beams (101); Purlins (102), which are connected to the tops of the arch frames (100), the purlins (102) extend along the first direction, and a plurality of purlins (102) are arranged at intervals in the second direction.

3. The protective shed according to claim 2, characterized in that, The shed top framework (10) further includes: Tension bars, which are connected to the tops of the arch frames (100), the tension bars extend along the second direction, and a plurality of tension bars are arranged at intervals along the first direction, and the plurality of purlins (102) are connected into a whole through the tension bars.

4. The protective shed according to claim 3, characterized in that, The shed top framework (10) further includes: Reinforcing beams (103), which extend along the first direction and are arranged at intervals along the second direction, and the plurality of arch frames (100) are fixedly connected to the reinforcing beams (103).

5. The protective shed according to claim 2, characterized in that, The shed body framework further includes a side framework (11), the outer shed wall (13) is laid on the side framework (11), and the side framework (11) includes: Columns (110), which are arranged outside the shed top framework (10), and a plurality of columns (110) are arranged at intervals along the first direction and the second direction, and the tops of the columns (110) are fixedly connected to the shed top framework (10); Cross beams (111), which are perpendicularly and fixedly connected to the columns (110).

6. The protective shed according to claim 5, characterized in that, The support legs (14) are fixedly connected to the bottoms of the columns (110) and are suitable for supporting at the support point (20).

7. The protective shed according to claim 6, characterized in that, It further includes a diagonal brace (16), one end of the diagonal brace (16) is connected to the shed body framework, and the other end is used for connecting with the precast beam formwork.

8. The protective shed according to claim 2, wherein The lifting structure (15) includes a lifting beam and lifting bars; The lifting beam is arranged at the middle position of the arch frames (100) and extends along the first direction; The lifting bars are used for connecting the lifting beam and the shed top framework (10), a plurality of lifting points are arranged on the lifting beam, and the plurality of lifting points are symmetrically arranged with the midpoint of the lifting beam along the first direction as the center.

9. The protective shed according to claim 1, characterized in that, It further includes a ladder (17) disposed on the shed top layer (12), and the ladder (17) extends from one side of the shed top layer (12) in the second direction to the position of the lifting structure (15).

10. The protective shed according to claim 1, characterized in that, The shed top layer (12) includes color steel tiles, and the outer shed wall (13) includes foam insulation boards.

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