A protective shed for steel box girder construction

Abstract

The present invention discloses a protective shed for steel box girder construction, which relates to the field of detection technology. The protective shed comprises two symmetrically arranged steel frame members which are connected by means of a connecting rod, the other end of the steel frame member is rotatably connected with a retractable support arm, the end of the support arm is rotatably connected with an end plate for connecting with a pier of a bridge, the upper end of the steel frame member is also provided with a slide rail, a plurality of springboards are laid on the slide rail, two adjacent springboards are locked by means of a locking member, the two closest springboards on the two steel frame members are connected together by means of a foldable plate group and can limit the lateral displacement of the springboards, the present invention reduces the space occupied by transportation and significantly reduces the difficulty of transportation by arranging the steel frame member to be foldable, and also adopts a retractable support arm design so that it can adapt to the construction of piers of different spans and can be reused, thereby greatly reducing the cost.

Description

Technical Field

[0001] The invention belongs to the field of detection technology, and in particular relates to a protective shed used for steel box girder construction. Background Art

[0002] Protective sheds are widely used in the construction process of steel box girders of bridges. Their main function is to provide a construction platform without affecting the traffic requirements under the steel box girder. Conventional protective sheds usually use steel sections and steel pipes to support the steel box girder. Although they can meet the requirements of providing support for the steel box girder, the existing technology requires more road space, which will not only increase the traffic pressure on the existing roads, but also increase the safety hazards of on-site construction. For this reason, the bottom protective shed of the steel box girder with Chinese patent publication number CNCN216920059U uses arched support beams to support the shed support beams and protective shed boards, and transfer the load to the roadside piers, reducing the impact of engineering construction on the road under the bridge. However, the arched support beams and shed support beams that serve as support and construction platforms are all non-foldable designs, which are difficult to transport. Moreover, because they are highly related to the steel box girder being constructed, the design size is relatively fixed and difficult to reuse. Therefore, it is necessary to design a protective shed structure that can be reused, has wide applicability and is easy to transport. Summary of the invention

[0003] The purpose of the present invention is to provide a protective shed for steel box girder construction to solve the above-mentioned defects caused by the prior art.

[0004] A protective shed for steel box girder construction, comprising two symmetrically arranged steel frame members connected by a connecting rod, wherein two ends of the connecting rod are rotatably connected to the two steel frame members respectively, and the other end of the steel frame member is rotatably connected to a retractable support arm, and the end of the support arm is rotatably connected to an end plate for connecting to a pier of a bridge, wherein a plurality of mounting holes are provided on the end plate, and a slide rail is further provided at the upper end of the steel frame member, and a plurality of springboards are laid on the slide rail, wherein two adjacent springboards are locked by a locking member, and the two closest springboards on the two steel frame members are connected together by a foldable plate group and can limit the lateral displacement of the springboards.

[0005] Preferably, the steel frame member includes two "mouth"-shaped steel frame plates arranged up and down and welded from four horizontal steel pipes. The two steel frame plates are connected together by means of vertical steel pipes and two connecting plates. The two connecting plates are located at both ends of the steel frame plates, and the vertical steel pipe is located between the two connecting plates.

[0006] Preferably, the support arm comprises a support member 1, a support member 2 and a clamping mechanism, one end of the support member 1 is rotatably connected to a connecting plate at the outer end of the steel frame plate, a slide groove matching with the support member 2 is arranged in the support member 1, the support member 2 is slidably connected in the slide groove and the outer end of the support member 2 is rotatably connected to a support arranged on the end plate;

[0007] The support member 2 is provided with a rectangular hole arranged along its length direction, and a tooth surface 1 is provided at the upper end of the rectangular hole. The support member 1 is provided with a sliding hole penetrating the support member 1, and a bottom plate is slidably connected in the sliding hole. A boss is provided in the middle of the upper end of the bottom plate, and a tooth surface 2 matching with the tooth surface 1 is provided on the boss. Guide columns are also fixed to the bottom plate on both sides of the boss. A top plate is provided at the upper end of the support member 1, and a guide hole matching with the guide column is provided on the top plate. A spring is sleeved on the guide column between the bottom plate and the top plate, and a nut for limiting is installed on the upper end of the guide column. A chamfer is also provided at the rectangular hole below the bottom plate.

[0008] Preferably, a cushion block is further provided at the connection between the support member 1 and the connecting plate.

[0009] Preferably, the connecting plate and the steel frame plate are connected with the aid of bolts, and both ends of the connecting rod are also connected with the connecting plate with the aid of bolts.

[0010] Preferably, the locking member comprises a locking plate and a bolt, and mounting holes for mounting the bolts are provided at both ends of the locking plate, and the bolts pass through the mounting holes to be connected to corresponding springboards.

[0011] Preferably, the foldable plate set comprises two symmetrically arranged plate members, and the two plate members and the plate member and the adjacent springboard are also connected by means of locking members;

[0012] A pull rod is rotatably connected to the bolt in the locking member connecting the two plates, and the other end of the pull rod is connected to a positioning column on the connecting plate by means of a nut.

[0013] Preferably, the slide rail is an I-shaped slide rail.

[0014] Preferably, the outer end of the end plate is also provided with an anti-skid plate matching therewith.

[0015] The advantages of the present invention are:

[0016] 1. The present invention reduces the space occupied by transportation and significantly reduces the difficulty of transportation by arranging the steel frame to be foldable.

[0017] 2. The present invention also adopts a retractable support arm design, so that it can adapt to the construction of piers with different spans and can be reused, greatly reducing the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention.

[0019] Figure 2 for Figure 1 A partial enlarged view of point A in the middle.

[0020] Figure 3 for Figure 1 A partial enlarged view of point B in the middle.

[0021] Figure 4 This is a schematic diagram of the steel frame part.

[0022] Figure 5 A schematic diagram of the support arm portion.

[0023] Figure 6 for Figure 5 Cross-sectional view of .

[0024] Figure 7 A partial view of the base plate.

[0025] Figure 8 Schematic diagram of a protective shed that uses cable-stayed auxiliary supports.

[0026] Fig. 9 Schematic diagram of a protective shed that uses hangers to assist in support.

[0027] Among them: 1 steel frame, 10 horizontal steel pipe, 11 vertical steel pipe, 12 connecting plate, 2 support arm, 20 support member 1, 200 sliding hole, 21 support member 2, 22 sliding groove, 23 rectangular hole, 24 tooth surface 1, 25 bottom plate, 26 boss, 27 tooth surface 2, 28 guide column, 29 top plate, 210 spring, 211 pad, 212 support, 213 chamfer, 3 locking member, 30 locking plate, 4 folding plate group, 40 plate, 41 pull rod, 42 positioning column, 5 end plate, 6 connecting rod, 7 springboard, 8 slide rail, 9 anti-skid plate. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0029] like Figures 1 to 7 As shown, a protective shed for steel box girder construction includes two symmetrically arranged steel frame members 1 and the two are connected by means of a connecting rod 6, and the two ends of the connecting rod 6 are respectively rotatably connected to the two steel frame members 1. The steel frame member 1 includes two "mouth"-shaped steel frame plates arranged up and down and welded by four horizontal steel pipes 10. The two steel frame plates are connected together by means of a vertical steel pipe 11 and two connecting plates 12. The two connecting plates 12 are located at both ends of the steel frame plates, and the vertical steel pipe 11 is located between the two connecting plates 12;

[0030] The other end of the steel frame 1 is rotatably connected to a retractable support arm 2, and the end of the support arm 2 is rotatably connected to an end plate 5 for connecting to the pier of the bridge, and the end plate 5 is provided with a plurality of mounting holes. The upper end of the steel frame 1 is also provided with a slide rail 8, and the slide rail 8 is an I-shaped slide rail 8, and a plurality of springboards 7 are laid on the slide rail 8;

[0031] The support arm 2 includes a support member 1 20, a support member 21 and a clamping mechanism. One end of the support member 1 20 is rotatably connected to the connecting plate 12 at the outer end of the steel frame plate. In order to reduce the wear of the connecting plate 12, a cushion block 211 can be provided at the connection between the support member 1 20 and the connecting plate 12. A slide groove 22 matching the support member 21 is provided in the support member 1 20. The support member 21 is slidably connected in the slide groove 22 and the outer end of the support member 21 is rotatably connected to the support 212 provided on the end plate 5.

[0032] The support member 21 is provided with a rectangular hole 23 arranged along its length direction, and a tooth surface 24 is provided at the upper end of the rectangular hole 23. The support member 20 is provided with a sliding hole 200 penetrating the support member 20, and a bottom plate 25 is slidably connected in the sliding hole 200. A boss 26 is provided in the middle of the upper end of the bottom plate 25, and a tooth surface 27 matching the tooth surface 24 is provided on the boss 26. Guide pillars 28 are also fixed on the bottom plate 25 on both sides of the boss 26. A top plate 29 is provided at the upper end of the support member 20. The top plate 29 is provided with a guide hole matched with the guide column 28. A spring 210 is sleeved on the guide column 28 between the bottom plate 25 and the top plate 29, and a nut for limiting is installed on the upper end of the guide column 28. A chamfer 213 is also provided at the rectangular hole 23 below the bottom plate 25. After adjusting the position of the support member 20, a pad is inserted from the chamfer 213 to force the bottom plate 25 to move toward the tooth surface 1 24 until the tooth surface 1 24 is meshed with the tooth surface 27, thereby completing the locking of the support member 20.

[0033] Two adjacent springboards 7 are locked by means of a locking member 3, wherein the locking member 3 comprises a locking plate 30 and a bolt. Both ends of the locking plate 30 are provided with mounting holes for mounting the bolts, and the bolts pass through the mounting holes and are connected to the corresponding springboards 7;

[0034] The two closest springboards 7 on the two steel frame members 1 are connected together by means of a foldable plate group 4 and can limit the lateral displacement of the springboard 7. The foldable plate group 4 includes two symmetrically arranged plate members 40. The two plate members 40 and the plate member 40 and the adjacent springboard 7 are also connected by means of a locking member 3.

[0035] A pull rod 41 is rotatably connected to the bolt in the locking member 3 connecting the two plate members 40 , and the other end of the pull rod 41 is connected to a positioning column 42 located on the connecting plate 12 by means of a nut.

[0036] In this embodiment, the connecting plate 12 is connected to the steel frame plate by means of bolts, and both ends of the connecting rod 6 are also connected to the connecting plate 12 by means of bolts.

[0037] In this embodiment, in order to increase the friction between the end plate 5 and the pier column and prevent them from sliding relative to each other, an anti-slip plate 9 matching with the end plate 5 is provided at the outer end of the end plate 5 .

[0038] The assembly method of the present invention is as follows:

[0039] In the initial state, the two steel frame members 1 are connected only by the two connecting rods 6 located at the bottom and folded together to reduce the volume for transportation. After arriving at the destination, the two steel frame members 1 are slowly raised and unfolded by the hydraulic jacking equipment until they reach a horizontal state. At this time, the other two connecting rods 6 are assembled to the connecting plate 12; then the length and angle of the support arm 2 are adjusted to form an obtuse angle between the support arm 2 and the steel frame member 1 until the end plate 5 contacts the pier column, and then the end plate 5 is connected to the secondary end plate 5 located on the other side of the pier column by means of bolts to complete the connection between the steel frame member 1 and the pier column, and finally the steel frame member 1 is kept in a horizontal state; finally, multiple springboards 7 are installed on the slide rails 8 and connected with the locking member 3, the two plate members 40 in the foldable plate group 4 are connected to the springboard 7 and then laid flat, and then the other end of the pull rod 41 is connected and fixed to the positioning column 42.

[0040] The construction environment of the upper span bridge is complex. In order to cope with the upper span construction under different span conditions, inclined cables can be set at both ends of the steel frame member 1 or a hanger can be set in the middle of the steel frame member and connected with the steel box girder, such as Figure 8 and Fig. 9 As shown, it can effectively ensure that the rigidity of the protective shed meets the use requirements, while reducing the shaking degree of the protective shed in a strong wind environment.

[0041] It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the above disclosed embodiments are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. A protective shed for steel box girder construction, characterized in that: The invention comprises two symmetrically arranged steel frame members (1) which are connected by means of a connecting rod (6), the two ends of the connecting rod (6) are respectively rotatably connected to the two steel frame members (1), the other end of the steel frame member (1) is rotatably connected to a telescopic support arm (2), the end of the support arm (2) is rotatably connected to an end plate (5) for connecting to a pier of a bridge, a plurality of mounting holes are provided on the end plate (5), a slide rail (8) is further provided at the upper end of the steel frame member (1), a plurality of springboards (7) are laid on the slide rail (8), two adjacent springboards (7) are locked by means of a locking member (3), the two closest springboards (7) on the two steel frame members (1) are connected together by means of a foldable plate group (4) and can limit the lateral displacement of the springboards (7); The steel frame member (1) comprises two "mouth"-shaped steel frame plates arranged up and down and welded by four transverse steel pipes (10), the two steel frame plates are connected together by means of vertical steel pipes (11) and two connecting plates (12), the two connecting plates (12) are located at both ends of the steel frame plates, and the vertical steel pipe (11) is located between the two connecting plates (12); The support arm (2) comprises a support member 1 (20), a support member 2 (21) and a clamping mechanism, one end of the support member 1 (20) is rotatably connected to a connecting plate (12) at the outer end of the steel frame plate, a slide groove (22) matching with the support member 2 (21) is arranged in the support member 1 (20), the support member 2 (21) is slidably connected in the slide groove (22) and the outer end of the support member 2 (21) is rotatably connected to a support (212) arranged on the end plate (5); The support member 2 (21) is provided with a rectangular hole (23) arranged along its length direction, and a tooth surface 1 (24) is provided at the upper end of the rectangular hole (23). The support member 1 (20) is provided with a sliding hole (200) penetrating the support member 1 (20), and a bottom plate (25) is slidably connected in the sliding hole (200). A boss (26) is provided at the middle part of the upper end of the bottom plate (25), and a tooth surface 2 (27) matching with the tooth surface 1 (24) is provided on the boss (26). Guide pillars (28) are also fixed on the bottom plate (25) on both sides of the boss (26), a top plate (29) is provided at the upper end of the support member (20), a guide hole matched with the guide pillar (28) is provided on the top plate (29), a spring (210) is sleeved on the guide pillar (28) between the bottom plate (25) and the top plate (29), and a nut for limiting is installed on the upper end of the guide pillar (28), and a chamfer (213) is also provided at the rectangular hole (23) below the bottom plate (25); A cushion block (211) is also provided at the connection between the support member 1 (20) and the connecting plate (12); The connecting plate (12) is connected to the steel frame plate by means of bolts, and the two ends of the connecting rod (6) are also connected to the connecting plate (12) by means of bolts.

2. A protective shed for steel box girder construction according to claim 1, characterized in that: The locking member (3) comprises a locking plate (30) and a bolt. Both ends of the locking plate (30) are provided with mounting holes for mounting the bolts. The bolts pass through the mounting holes and are connected to corresponding springboards (7).

3. A protective shed for steel box girder construction according to claim 2, characterized in that: The foldable plate group (4) comprises two symmetrically arranged plate members (40), and the two plate members (40) and the plate member (40) and the adjacent springboard (7) are also connected by means of a locking member (3); A pull rod (41) is rotatably connected to the bolt in the locking member (3) connecting the two plates (40), and the other end of the pull rod (41) is connected to a positioning column (42) located on the connecting plate (12) by means of a nut.

4. The protective shed for steel box girder construction according to claim 1, characterized in that: The slide rail (8) is an I-shaped slide rail (8).

5. The protective shed for steel box girder construction according to claim 1 is characterized in that: The outer end of the end plate (5) is also provided with an anti-slip plate (9) that matches the end plate (5).

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