A folding steel shell for closure of a double-rotor continuous beam

Abstract

The utility model relates to bridge component technical field, concretely relates to a kind of folding steel shell for double-rotor continuous beam closure, including first embedded section and second embedded section, the side of first embedded section is embedded in the end of first rotor bridge, the bottom edge edge of first embedded section is provided with several groups of rotary hinges, the other side of first embedded section is installed with folding steel shell assembly by rotary hinge, folding steel shell assembly and embedded section end are processed into tongue-and-groove form, folding steel shell assembly rotates around first embedded section by rotary hinge, the folding steel shell assembly of rotation and second embedded section interlock can form closed plane, to form complete closure part, solve the safety risk and steel shell thickness encroachment beam section size problem existing in field hoisting operation, welding longitudinal stiffened plate on the complete closed plane shell cavity surface, shell can not be transversely welded connection for tongue-and-groove connection, improve operation safety and construction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of bridge component technology, specifically to a folding steel shell for closure of a double-rotating continuous beam. Background Technology

[0002] In the construction of rotating continuous beams, the mid-span closure segment is a crucial link in controlling the bridge's alignment and structural stress. Traditional closure construction often employs conventional prefabricated steel shell structures, which have the following problems:

[0003] Traditional modular steel shells require on-site hoisting and assembly, which is complex and time-consuming, and prone to hoisting accidents. During the assembly process, the joints need to be welded and fixed. The welding of the bottom joint of the folded steel shell is much more dangerous than the side welding. Therefore, a flip-folding steel shell device is proposed. Utility Model Content

[0004] In order to solve the technical problems existing in the prior art, the present invention provides a folding steel shell for closure of a double-rotating continuous beam, including a first embedded section and a second embedded section. One side of the first embedded section is embedded at the end of the first rotating bridge. Several sets of rotating hinges are provided at the bottom edge of the first embedded section. A folding steel shell assembly is installed on the other side of the first embedded section through the rotating hinges. One side of the second embedded section is embedded at the end of the second rotating bridge.

[0005] The folding steel shell assembly rotates around the first pre-embedded section via a rotating hinge, and the rotating folding steel shell assembly engages with the second pre-embedded section to form a closed plane.

[0006] Preferably, several sets of the rotating hinges are respectively arranged on the horizontal section, vertical section and inclined section of the first pre-embedded section, and at least two sets of rotating hinges are provided on the surface of the horizontal section of the first pre-embedded section, and at least one set of rotating hinges are provided on the surface of the vertical section and inclined section of the first pre-embedded section.

[0007] Preferably, the rotating hinge includes a first rotating page, a second rotating page, and a rotating shaft. The first rotating page is fixed to the bottom surface of the first pre-embedded section by welding. The second rotating page is nested inside the first rotating page. The rotating shaft passes through both the first and second rotating pages to connect the first rotating page and the rotating shaft. At the same time, the rotating shaft is welded to the second rotating page.

[0008] Preferably, the first rotating page has a transverse connecting groove inside, and the rotating shaft, which is fixedly connected to the second rotating page, is sleeved in the groove inside the first rotating page. The width of the connecting groove is the same as the diameter of the rotating shaft, and the length of the connecting groove is longer than the diameter of the rotating shaft.

[0009] Preferably, the side of the first rotating page extends toward the second rotating page, the second rotating page fits against the extension of the first rotating page, and the first rotating page limits the maximum rotation range of the second rotating page.

[0010] Preferably, the folding steel shell assembly includes a steel shell bottom plate, steel shell side plates, and a steel shell top plate. The steel shell bottom plate is connected to the second rotating hinge of a rotating hinge disposed on the bottom surface of the horizontal section of the first pre-embedded section. Two sets of steel shell side plates are respectively disposed on both sides of the steel shell bottom plate. The steel shell side plates are connected to the second rotating hinge of a rotating hinge disposed on the surface of the vertical section of the first pre-embedded section. Two sets of steel shell top plates are respectively disposed on the sides of the two sets of steel shell side plates. The steel shell top plate is connected to the second rotating hinge of a rotating hinge disposed on the surface of the inclined section of the first pre-embedded section.

[0011] Preferably, the bottom end of the steel shell side plate is provided with an arc-shaped transition section for cooperating with the steel shell bottom plate, and the top end of the steel shell side plate is provided with an arc-shaped transition section for cooperating with the steel shell top plate.

[0012] Preferably, the top surface of the steel shell base plate is provided with a top surface tongue and groove, and the bottom surface of the second embedded section is provided with a bottom surface tongue and groove that cooperates with the steel shell base plate. After the second embedded section and the steel shell base plate are flipped and overlapped, they are engaged to form a complete plane.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model includes a first embedded section and a second embedded section. One side of the first embedded section is embedded at the end of the first swing bridge. Several sets of rotating hinges are provided at the bottom edge of the first embedded section. A folding steel shell assembly is installed on the other side of the first embedded section through the rotating hinges. One side of the second embedded section is embedded at the end of the second swing bridge. The folding steel shell assembly rotates around the first embedded section through the rotating hinges, forming a complete closure part through folding and rotation. This solves the problems of safety risks in on-site hoisting operations and the problem of steel shell thickness encroaching on the beam cross-sectional dimensions.

[0015] 2. In this utility model, the rotating folding steel shell assembly engages with the second pre-embedded section to form a closed plane. Through the formed complete closed plane shell cavity, longitudinal stiffening plates are welded on the surface of the complete closed plane shell cavity. The tongue and groove connected shell does not need to be connected by transverse welding, which further improves the safety of operation and construction efficiency. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the folding steel shell assembly structure of this utility model;

[0018] Figure 3 This is a three-dimensional structural diagram of the rotating hinge of this utility model;

[0019] Figure 4 This is a side-view perspective three-dimensional structural diagram of the rotating hinge of this utility model;

[0020] Figure 5 This is a three-dimensional structural diagram of the steel shell side plate of this utility model;

[0021] Figure 6 This is a three-dimensional structural diagram of the steel shell top plate of this utility model;

[0022] Figure 7 This is a three-dimensional structural diagram of the folded state of this utility model;

[0023] Figure 8 This is a schematic diagram showing the fit between the top tongue and groove of the steel shell base plate and the bottom tongue and groove of the second pre-embedded section of this utility model.

[0024] Figure 9 This is the purpose of this utility model.

[0025] The numbers in the image represent:

[0026] 1. First embedded section; 2. Rotating hinge; 21. First rotating hinge; 22. Second rotating hinge; 23. Rotating shaft; 3. Folding steel shell assembly; 31. Steel shell bottom plate; 32. Steel shell side plate; 33. Steel shell top plate; 4. Second embedded section. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments, highlighting the above and other technical features and advantages of the present invention. However, the following embodiments are merely preferred embodiments of the present invention and are not exhaustive.

[0028] Example:

[0029] like Figures 1-9 As shown, this utility model provides a folding steel shell for closure of a double-rotating continuous beam, including a first embedded section 1 and a second embedded section 4. One side of the first embedded section 1 is embedded at the end of the first rotating bridge. Several sets of rotating hinges 2 are provided at the bottom edge of the first embedded section 1. The other side of the first embedded section 1 is equipped with a folding steel shell assembly 3 through the rotating hinges 2. One side of the second embedded section 4 is embedded at the end of the second rotating bridge.

[0030] The folding steel shell assembly 3 rotates around the first embedded section 1 via the rotating hinge 2, and the rotating folding steel shell assembly 3 engages with the second embedded section 4 to form a closed plane.

[0031] Several sets of rotating hinges 2 are respectively arranged in the horizontal section, vertical section and inclined section of the first pre-embedded section 1. At least two sets of rotating hinges 2 are provided on the surface of the horizontal section of the first pre-embedded section 1, and at least one set of rotating hinges 2 is provided on the surface of the vertical section and inclined section of the first pre-embedded section 1. The rotating hinge 2 includes a first rotating page 21, a second rotating page 22 and a rotating shaft 23.

[0032] The first rotating page 21 is fixed to the bottom surface of the first embedded section 1 by welding. The second rotating page 22 is nested inside the first rotating page 21. The rotating shaft 23 passes through both the first rotating page 21 and the second rotating page 22 to connect the first rotating page 21 and the rotating shaft 23. At the same time, the rotating shaft 23 is welded to the second rotating page 22. When rotating, the first rotating page 21 can cooperate with the rotating shaft 23 to serve as the fulcrum for the second rotating page 22 to rotate around the rotating shaft 23.

[0033] The first rotating page 21 has a transverse connecting groove inside. The rotating shaft 23, which is fixedly connected to the second rotating page 22, is fitted into the groove inside the first rotating page 21. The width of the connecting groove is the same as the diameter of the rotating shaft 23, and the length of the connecting groove is longer than the diameter of the rotating shaft 23. The second rotating page 22 can be moved laterally relative to the first rotating page 21 to a certain extent by pulling it, so that the second rotating page 22 can adjust the rotation point according to the rotation needs to better adapt to the rotation.

[0034] The side of the first rotating page 21 extends toward the second rotating page 22. The second rotating page 22 fits into the extension of the first rotating page 21. The first rotating page 21 limits the maximum rotation range of the second rotating page 22. When the second rotating page 22 rotates, the first rotating page 21 can limit the rotation of the second rotating page 22, preventing the second rotating page 22 from rotating excessively around the rotation axis 23 and forming a negative angle.

[0035] The folding steel shell assembly 3 includes a steel shell bottom plate 31, a steel shell side plate 32, and a steel shell top plate 33;

[0036] The steel shell base plate 31 is connected to the second rotating hinge 22 of the rotating hinge 2 set on the bottom surface of the horizontal section of the first pre-embedded section 1. Two sets of steel shell side plates 32 are respectively set on both sides of the steel shell base plate 31. The steel shell side plates 32 are connected to the second rotating hinge 22 of the rotating hinge 2 set on the surface of the vertical section of the first pre-embedded section 1. Two sets of steel shell top plates 33 are respectively set on the sides of the two sets of steel shell side plates 32. The steel shell top plates 33 are connected to the second rotating hinge 22 of the rotating hinge 2 set on the surface of the inclined section of the first pre-embedded section 1. After the first rotating bridge rotates into place, the steel shell side plates 32, steel shell base plate 31 and steel shell top plates 33 are pushed in sequence. Under the support of the second rotating hinge 22, the steel shell side plates 32, steel shell base plate 31 and steel shell top plates 33 unfold into place in sequence. The unfolded steel shell side plates 32, steel shell base plate 31 and steel shell top plates 33 form a complete folded steel shell assembly 3.

[0037] The bottom end of the steel shell side plate 32 is provided with an arc-shaped transition section for cooperating with the steel shell bottom plate 31, and the top end of the steel shell side plate 32 is provided with an arc-shaped transition section for cooperating with the steel shell top plate 33. After the steel shell bottom plate 31 and steel shell top plate 33 are rotated and unfolded, the transition sections at the bottom and top of the steel shell side plate 32 can cooperate with the steel shell bottom plate 31 and steel shell top plate 33 to form a complete and closed folded steel shell assembly 3.

[0038] The top surface of the steel shell base plate 31 is provided with a top tongue and groove, and the bottom surface of the second embedded section 4 is provided with a bottom tongue and groove that mates with the steel shell base plate 31. After the second embedded section 4 and the steel shell base plate 31 are flipped and overlapped, they can be locked together to form a complete plane. The complete plane allows the joint between the second embedded section 4 and the steel shell base plate 31 to be sealed without welding. In the sealed state, the joint between the second embedded section 4 and the steel shell base plate 31 is sealed with glue. After sealing, shear nails are welded to the surface of the second embedded section 4 and the steel shell base plate 31 to facilitate subsequent concrete pouring operations.

[0039] In use, after the first and second rotating bridges have rotated into position in sequence, assembly is performed. The restrictions on the steel shell bottom plate 31, steel shell side plates 32, and steel shell top plate 33 are released. The steel shell side plates 32, bottom plate 31, and top plate 33 are then pushed sequentially, causing the second rotating page 22 to rotate around the rotation axis 23. When the second rotating page 22 contacts the first rotating page 21, the steel shell bottom plate 31, side plate 32, and top plate 33 have rotated into position. Then, pull the rotated steel shell bottom plate 31, steel shell side plate 32 and steel shell top plate 33 in sequence so that the steel shell bottom plate 31, steel shell side plate 32 and steel shell top plate 33 are aligned with the side of the first pre-embedded section 1 in sequence. When the steel shell bottom plate 31 is rotated into place, the top surface tongue and groove of the top surface of the steel shell bottom plate 31 and the bottom surface tongue and groove of the second pre-embedded section 4 cooperate to close each other, forming a complete closed planar shell cavity. On the surface of the complete closed planar shell cavity, longitudinal stiffening plates are welded. The shell with tongue and groove connection does not need to be connected by transverse welding.

[0040] After the steel shell bottom plate 31, steel shell side plate 32 and steel shell top plate 33 are rotated into place and adjusted, the steel shell side plate 32 is fixed to the joint between the steel shell bottom plate 31 and steel shell top plate 33 by welding, and the steel shell side plate 32 and steel shell top plate 33 are fixed to the side of the second rotating bridge.

[0041] The above description is merely a preferred embodiment of the present utility model and is illustrative rather than restrictive. Those skilled in the art will understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present utility model, all of which will fall within the protection scope of the present utility model.

Claims

1. A folding steel shell for closure of a double-rotating continuous beam, characterized in that, It includes a first embedded section and a second embedded section. One side of the first embedded section is embedded at the end of the first swing bridge. Several sets of rotating hinges are provided at the bottom edge of the first embedded section. A folding steel shell assembly is installed on the other side of the first embedded section through the rotating hinges. One side of the second embedded section is embedded at the end of the second swing bridge. The folding steel shell assembly rotates around the first pre-embedded section via a rotating hinge, and the rotating folding steel shell assembly engages with the second pre-embedded section to form a closed plane.

2. The folding steel shell for closure of a double-rotating continuous beam as described in claim 1, characterized in that, Several sets of rotating hinges are respectively arranged on the horizontal, vertical and inclined sections of the first pre-embedded section. At least two sets of rotating hinges are provided on the surface of the horizontal section of the first pre-embedded section, and at least one set of rotating hinges are provided on the surface of the vertical and inclined sections of the first pre-embedded section.

3. A folding steel shell for closure of a double-rotating continuous beam as described in claim 2, characterized in that, The rotating hinge includes a first rotating page, a second rotating page, and a rotating shaft. The first rotating page is fixed to the bottom surface of the first pre-embedded section by welding. The second rotating page is nested inside the first rotating page. The rotating shaft passes through both the first and second rotating pages to connect the first rotating page and the rotating shaft. At the same time, the rotating shaft is welded to the second rotating page.

4. A folding steel shell for closure of a double-rotating continuous beam as described in claim 3, characterized in that, The first rotating page has a horizontal connecting groove inside. The rotating shaft, which is fixedly connected to the second rotating page, is sleeved in the groove inside the first rotating page. The width of the connecting groove is the same as the diameter of the rotating shaft, and the length of the connecting groove is longer than the diameter of the rotating shaft.

5. A folding steel shell for closure of a double-rotating continuous beam as described in claim 3, characterized in that, The side of the first rotating page extends toward the second rotating page, and the second rotating page fits into the extension of the first rotating page. The first rotating page limits the maximum rotation range of the second rotating page.

6. A folding steel shell for closure of a double-rotating continuous beam as described in claim 1, characterized in that, The folding steel shell assembly includes a steel shell bottom plate, steel shell side plates, and a steel shell top plate. The steel shell bottom plate is connected to the second rotating hinge of a rotating hinge located on the bottom surface of the horizontal section of the first pre-embedded section. Two sets of steel shell side plates are respectively located on both sides of the steel shell bottom plate. The steel shell side plates are connected to the second rotating hinge of a rotating hinge located on the surface of the vertical section of the first pre-embedded section. Two sets of steel shell top plates are respectively located on the sides of the two sets of steel shell side plates. The steel shell top plate is connected to the second rotating hinge of a rotating hinge located on the surface of the inclined section of the first pre-embedded section.

7. A folding steel shell for closure of a double-rotating continuous beam as described in claim 6, characterized in that, The bottom end of the steel shell side plate is provided with an arc-shaped transition section for cooperating with the steel shell bottom plate, and the top end of the steel shell side plate is provided with an arc-shaped transition section for cooperating with the steel shell top plate.

8. A folding steel shell for closure of a double-rotating continuous beam as described in claim 6, characterized in that, The top surface of the steel shell base plate is provided with a top surface tongue and groove, and the bottom surface of the second embedded section is provided with a bottom surface tongue and groove that cooperates with the steel shell base plate. After the second embedded section and the steel shell base plate are flipped and overlapped, they are engaged to form a complete plane.

Images