Steel box girder segment assembly jig

Abstract

The utility model discloses a kind of steel box girder section group splicing jig, belong to bridge construction technical field.It includes jig body, the middle part of jig body is beam trolley passage, jig body includes left jig, right jig and the intermediate jig between left jig and right jig, intermediate jig corresponds beam trolley passage, left jig and right jig bottom are fixed with multiple first support columns and are fixed to ground by first support column, the bottom of intermediate jig is provided with multiple detachable second support columns and is supported on ground by second support column, intermediate jig is detachably arranged between left jig and right jig, the both ends of intermediate jig respectively abut with left jig and right jig, the abutment of intermediate jig and left jig and right jig is arranged on first support column, the abutment surface of intermediate jig and left jig and right jig is matched bevel, and the two inclined surfaces on left jig and right jig are inverted eight character shape.

Description

Technical Field

[0001] This utility model relates to a steel box girder segment assembly jig, which is mainly used for assembling steel box girder segments and belongs to the field of bridge construction technology. Background Technology

[0002] Steel box girders are a common structural form for long-span bridges, generally used on bridges with large spans. During construction, steel box girder segments are typically assembled in advance on-site, then transported to the construction site for welding and assembly.

[0003] When assembling steel box girder segments, assembly is carried out on an assembly jig. The middle section of the jig serves as a passageway for the girder transport trolley. After assembly, the girder transport trolley moves the steel box girder segments out from under the jig. Currently, the middle section and sides of the existing assembly jig are fixed structures. During girder transport, the middle section must be manually disassembled before the transport trolley can enter under the girder for the transfer operation. Manual disassembly of the middle jig is labor-intensive, inefficient, and requires workers to work at the bottom of the jig for extended periods, posing a significant safety hazard. Utility Model Content

[0004] To address the aforementioned deficiencies in the existing technology, this utility model provides a steel box girder segment assembly jig that is simple to operate, easy to disassemble, and highly safe.

[0005] This utility model is achieved through the following technical solution: a steel box girder segment assembly jig, including a jig body, the middle of which is a beam transport trolley passage, characterized in that: the jig body includes a left jig, a right jig, and an intermediate jig located between the left jig and the right jig, the intermediate jig corresponding to the beam transport trolley passage, the bottom of the left jig and the right jig are each fixed with multiple first support columns and fixed to the ground by the first support columns, the bottom of the intermediate jig is provided with multiple detachable second support columns and supported to the ground by the second support columns, the intermediate jig is detachably set between the left jig and the right jig, the two ends of the intermediate jig abut against the left jig and the right jig respectively, the abutment of the intermediate jig with the left jig and the right jig is set on the first support columns, the abutment surface of the intermediate jig with the left jig and the right jig is a matching inclined surface, and the two inclined surfaces on the left jig and the right jig are inverted V-shape.

[0006] In this invention, the intermediate frame is designed so that its two ends abut against the left and right frames respectively. By setting the abutment surfaces of the intermediate frame with the left and right frames as matching inclined surfaces, and by placing the two ends of the intermediate frame on the first support column, the intermediate frame can be reliably supported and is easy to disassemble.

[0007] Furthermore, the bottom of the left and right tire frames is provided with multiple bottom cross braces, and the middle tire frame has multiple intermediate cross braces corresponding to the bottom cross braces of the left and right tire frames. The two ends of the intermediate cross braces abut against the corresponding bottom cross braces of the left and right tire frames, respectively.

[0008] Furthermore, a fixing slot is provided on the first support column at the junction of the intermediate jig and the left and right jigs to restrict the movement of the intermediate jig. The movement of the intermediate jig can be restricted by the fixing slot.

[0009] Furthermore, the fixing slot is formed by two fixing plates set on both sides of the middle cross brace, and the fixing plates are fixedly connected to the first support column.

[0010] Furthermore, both the intermediate cross brace and the second support column are H-beams.

[0011] The beneficial effects of this utility model are as follows: This utility model has a simple structure. By making the intermediate support frame detachable, and with both ends of the intermediate support frame abutting against the left and right support frames, disassembly of the intermediate support frame is more convenient. By setting the abutting surfaces of the intermediate support frame with the left and right support frames as matching inclined surfaces, and by placing both ends of the intermediate support frame on the first support column, the two ends of the intermediate support frame can reliably transmit force and receive reliable support, ensuring the overall structural strength and load-bearing capacity of the support frame, and guaranteeing the construction safety of the steel box girder assembly. This utility model has a simple structure, and the intermediate support frame is easy to disassemble, which can greatly improve work efficiency, reduce the time construction personnel spend working under the beam, and improve the safety of construction operations. Attached Figure Description

[0012] Figure 1 This is a top view of the present invention;

[0013] Figure 2 This is a side view of the present invention;

[0014] Figure 3 This is an enlarged schematic diagram of the present invention;

[0015] Figure 4 yes Figure 3 AA section view diagram;

[0016] In the diagram, 1 is the steel box girder segment, 2 is the left side support frame, 3 is the middle support frame, 4 is the right side support frame, 5 is the first support column, 6 is the second support column, 7 is the fixing plate, and 8 is the girder transport trolley track.

[0017] 2.1 Diagonal brace; 2.2 Reinforcing diagonal bar; 2.3 Vertical support; 2.4 Bottom horizontal brace; 2.5 Bottom longitudinal connecting brace;

[0018] 3.1. Intermediate cross brace. Detailed Implementation

[0019] The present invention will be further described below through non-limiting embodiments and in conjunction with the accompanying drawings:

[0020] As shown in the attached diagram, a steel box girder segment assembly jig includes a jig body with a girder transport trolley passage in the middle. The jig body includes a left jig 2, a right jig 4, and an intermediate jig 3 located between the left jig 2 and the right jig 4, corresponding to the girder transport trolley passage. Multiple first support columns 5 are fixed to the bottom of both the left jig 2 and the right jig 4, and both are fixed to the ground via these first support columns 5. Multiple detachable second support columns 6 are provided at the bottom of the intermediate jig 3, and the intermediate jig 3 is supported to the ground via these second support columns 6. The intermediate jig 3 is detachably installed between the left jig 2 and the right jig 4. Its two ends are not fixedly connected to the left jig 2 and the right jig 4. The two ends of the intermediate jig 3 abut against the left jig 2 and the right jig 4 respectively. The abutment points of the intermediate jig 3 with the left jig 2 and the right jig 4 are located on the first support column 5. The first support column 5 reliably supports the abutment points of the intermediate jig 3 with the left jig 2 and the right jig 4. Furthermore, the abutment surfaces of the intermediate jig 3 with the left jig 2 and the right jig 4 are designed as matching inclined surfaces, and the two inclined surfaces on the left jig 2 and the right jig 4 form an inverted V-shape. This design, on the one hand, facilitates the lifting of the intermediate jig and prevents jamming, and on the other hand, increases the load-bearing capacity of the inclined surfaces of the left and right jigs, ensuring the overall stability and reliability of the structure. The heights of the first support column 5 and the second support column 6 should meet the height requirements of the beam transport trolley.

[0021] In this invention, preferably, the bottom of both the left-side frame 2 and the right-side frame 4 includes multiple bottom horizontal supports 2.4 arranged along the beam transport direction. The bottom horizontal supports 2.4 are connected by multiple longitudinal connecting supports to form a bottom frame. An oblique support 2.1 is provided on the upper part of the bottom horizontal support 2.4. The oblique support 2.1 is fixedly connected to the bottom horizontal support 2.4 via a vertical support 2.3 and a reinforcing diagonal rod 2.2. A first support column 5 is fixedly connected to the bottom of the bottom horizontal support 2.4. The bottom horizontal support 2.4, oblique support 2.1, vertical support 2.3, and first support column 5 are all H-beams. The left-side frame 2 and the right-side frame 4 are symmetrically arranged. The intermediate frame 3 consists of multiple intermediate cross braces 3.1, which are also made of H-beams. The number of intermediate cross braces 3.1 is the same as the number of bottom cross braces 2.4 of the left and right frames. The two ends of the intermediate cross braces 3.1 abut against the bottom cross braces of the corresponding left and right frames 2 and 4, respectively. The second support column 6 is connected to the bottom of the intermediate cross braces 3.1, and the second support column 6 is also preferably made of H-beams.

[0022] When this utility model adopts the above structure, after the left jig 2, the middle jig 3, and the right jig 4 are assembled, the steel box girder segments can be assembled on top of them. When it is necessary to transport the beam, the middle jig 3 can be moved along the beam transport direction to disassemble it. A beam transport trolley can be used to assist in the disassembly.

[0023] To prevent the intermediate support frame 3 from moving, preferably, a fixing groove for restricting the movement of the intermediate support frame 3 is provided on the first support column 5 at the abutment point of the intermediate support frame 3 with the left support frame 2 and the right support frame 4. The groove of the fixing groove faces upward, so that the intermediate support frame 3 can only move upward. The fixing groove is formed by two fixing plates 7 set on both sides of the intermediate cross brace 3.1, and both fixing plates 7 are fixedly connected to the first support column 5.

[0024] When this utility model adopts this structure, the disassembly of the intermediate jig can be carried out by a combination of a beam transport trolley and manual labor. In addition to the box girder lifting device, the beam transport trolley is also equipped with an intermediate jig lifting device. The intermediate jig is initially disassembled manually. Then, the beam transport trolley enters the beam transport channel, and the intermediate jig is lifted and disassembled by the cooperation of the box girder lifting device and the intermediate jig lifting device. The disassembled intermediate jig is carried out from the side, and then the beam transport trolley continues to move forward to continue the disassembly.

[0025] The other parts in this embodiment are all existing technologies and will not be described in detail here.

Claims

1. A steel box girder segment assembly jig, comprising a jig body, wherein the middle part of the jig body is a girder transport trolley passage, characterized in that: The jig body includes a left jig, a right jig, and an intermediate jig located between the left and right jigs. The intermediate jig corresponds to the beam transport trolley passage. The bottom of the left and right jigs is fixed with multiple first support columns and is fixed to the ground through the first support columns. The bottom of the intermediate jig is provided with multiple detachable second support columns and is supported to the ground through the second support columns. The intermediate jig is detachably set between the left and right jigs. The two ends of the intermediate jig abut against the left and right jigs respectively. The abutment points of the intermediate jig with the left and right jigs are located on the first support columns. The abutment surfaces of the intermediate jig with the left and right jigs are matching inclined surfaces, and the two inclined surfaces on the left and right jigs are inverted V-shapes.

2. The steel box girder segment assembly jig as claimed in claim 1, wherein: The bottom of the left and right tire frames is equipped with multiple bottom cross braces. The middle tire frame has multiple middle cross braces corresponding to the bottom cross braces of the left and right tire frames. The two ends of the middle cross braces abut against the bottom cross braces of the corresponding left and right tire frames, respectively.

3. The steel box girder segment assembly jig of claim 2, wherein: A fixing slot is provided on the first support column at the junction of the middle frame with the left and right frames to restrict the movement of the middle frame.

4. The steel box girder segmental assembly jig as claimed in claim 3, wherein: The fixing slot is formed by two fixing plates set on both sides of the middle cross brace, and the fixing plates are fixedly connected to the first support column.

5. The steel box girder segment assembly jig of any one of claims 2-4, wherein: The middle cross brace and the second support column are both H-beams.

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