Large-span combined-section bailey beam capable of achieving accurate positioning

Abstract

The utility model provides a large-span combined-section bailey beam capable of accurately positioning, which belongs to the technical field of bailey trusses and comprises a bailey beam, a plurality of beam bodies and a plurality of beam bodies, the bailey beam comprises two chord members and two vertical rods, and the two vertical rods are welded at two ends of the two chord members to form a rectangular frame structure; the reinforcing frames are arranged between the two vertical rods and are sequentially arranged at intervals; the two positioning mechanisms are detachably arranged outside the vertical rod, and each positioning mechanism comprises two positioning pieces. The novel bailey truss has the advantages that the two detachable positioning mechanisms are arranged, the problems of difficulty and errors existing when a traditional bailey truss is used for welding and positioning a reinforcing frame are effectively solved, the positioning mechanisms can be rapidly mounted and dismounted through the opening design of the sliding frame, the locking structures abut against the side faces of the vertical rods through the locking rods, and the locking effect is good. It is ensured that the positioning mechanism is stable and reliable in the using process, the inclined supporting face on the positioning block provides a precise abutting position for the bent end of the reinforcing frame, and the positioning precision during welding is remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of bailey frame, especially to a large-span combined section bailey beam of accurate positioning. BACKGROUND

[0002] Bailey frame is a kind of fabricated steel truss structure widely used in bridge, building and other engineering fields, with the characteristics of simple structure, convenient transportation, rapid erection, strong bearing capacity and the like.

[0003] The main structural components of bailey frame include chord, vertical rod, reinforcing frame and connecting component, wherein the reinforcing frame and vertical rod are alternately arranged to form stable triangular structure, which enhances the overall stability and shear capacity of truss, and the reinforcing frame is welded with vertical rod through connecting plate, and positioning is needed before welding, which is placed according to the design position, and the reinforcing frame is supported for welding, in the traditional bailey frame processing, the positioning of reinforcing frame mainly depends on manual operation, and manual positioning needs repeated adjustment, which increases construction time and labor cost, and the error of manual positioning may cause the decline of welding quality and increase the risk of weld defects. SUMMARY

[0004] Therefore, the embodiment of the utility model provides a large-span combined section bailey beam of accurate positioning to solve the complicated and complex welding pre-positioning.

[0005] The embodiment of the utility model provides a large-span combined section bailey beam of accurate positioning, which comprises:

[0006] The bailey beam comprises two chords and two vertical rods, and the two vertical rods are welded at the two ends of the two chords to form a rectangular frame structure.

[0007] A plurality of reinforcing frames are arranged between the two vertical rods and are sequentially and spacedly arranged.

[0008] Two positioning mechanisms are detachably arranged outside the vertical rods, each positioning mechanism comprises two positioning pieces, and the two positioning pieces are symmetrically arranged, each positioning piece comprises a sliding frame, a positioning block and a locking structure, the sliding frame has an opening portion on one side, so that it can be detachably buckled outside the vertical rod, the positioning block is connected with the side surface of the sliding frame, so that the positioning block can be located on the side of the vertical rod corresponding to the reinforcing frame, and the locking structure is arranged at the lateral position of the opening portion of the sliding frame to limit the position of the sliding frame outside the vertical rod, by arranging the two positioning mechanisms on the vertical rod, the two positioning blocks are close to the recess abutting position to provide a top corner of a reinforcing frame for abutting positioning, so as to determine the welding position of the top corner of the reinforcing frame and the vertical rod.

[0009] Further, the locking structure comprises a mounting frame and a locking rod, the mounting frame is connected with the side surface of the sliding frame, and the locking rod is threadedly connected with the sliding frame.

[0010] Further, a through hole is formed in the sliding frame, and the end of the locking rod passes through the through hole and abuts against the side surface of the vertical rod.

[0011] Further, a supporting surface is formed in each of the positioning blocks, the supporting surface is arranged to be inclined to the vertical surface, and the supporting surfaces of the two positioning blocks are arranged to face each other.

[0012] Further, a connecting rod is arranged between the two sliding frames, a sliding groove is formed in the interior of the sliding frame, and the end of the connecting rod is provided with a sliding block which is slidingly connected to the sliding groove.

[0013] Further, an angle plate is arranged on the adjacent surfaces of the sliding frame and the positioning block.

[0014] Further, a handle is arranged on the end of the locking rod which extends to the outside of the mounting frame.

[0015] Further, a connecting plate is arranged on the inner side of the bailey beam, and the connecting plate is connected with the reinforcing frame.

[0016] Further, the chord rod comprises a first channel steel and a second channel steel, and the first channel steel and the second channel steel are both welded by double channel steels.

[0017] Further, two pairs of connectors are arranged on the upper and lower ends of the bailey beam, and the upper and lower pairs of connectors are arranged to face each other in opposite directions.

[0018] The beneficial effects brought by the technical scheme provided by the embodiment of the utility model are as follows: the utility model precise positioning large-span combined section bailey beam effectively solves the problems of difficulty and error in the welding positioning of the traditional bailey frame on the reinforcing frame by arranging two detachable positioning mechanisms, the opening design of the sliding frame enables the positioning mechanism to be quickly installed and detached, the locking structure abuts against the side surface of the vertical rod through the locking rod, thereby ensuring that the positioning mechanism is stable and reliable during use, the inclined supporting surface on the positioning block provides an accurate abutting position for the bent end of the reinforcing frame, thereby significantly improving the positioning precision during welding, in addition, the design of the connecting rod enables the spacing between the two positioning mechanisms to be adjustable, thereby enabling the device to be adapted to reinforcing frames of different sizes, thereby enhancing the versatility and flexibility of the device, the angle plate between the sliding frame and the positioning block further enhances the stability of the structure, and the design of the handle facilitates the manual adjustment of the position of the locking rod by the operator, thereby improving the convenience of use. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is the structure perspective view of the utility model precise positioning large-span combined section bailey beam.

[0020] Figure 2 is the positioning mechanism structure perspective view of the large-span combined section bailey beam of the utility model precise positioning;

[0021] Figure 3 is the longitudinal section view of the sliding frame of the large-span combined section bailey beam of the utility model precise positioning;

[0022] Figure 4 is the large-span combined section bailey beam of the utility model precise positioning Figure 1 Structure enlarged view of A in the middle.

[0023] In the figure: 1, chord; 11, first channel steel; 12, second channel steel; 2, vertical rod; 3, reinforcing frame; 4, connecting plate; 6, joint; 7, positioning mechanism; 71, sliding frame; 72, positioning block; 721, support surface; 722, angle plate; 73, mounting frame; 74, locking rod; 741, handle; 75, connecting rod; 76, sliding groove; 77, sliding block; 8, connecting piece. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the utility model more clear, the following will combine the drawings to make further description to the utility model embodiment. The following introduction is one of the more optimal ones in multiple possible embodiments of the utility model, and is intended to provide basic understanding of the utility model, but is not intended to confirm the key or decisive elements of the utility model or limit the scope of protection.

[0025] In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary, and not as a limitation. Thus, other examples of example embodiments can have different values.

[0026] Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail herein, but should be considered as part of the specification, where appropriate.

[0027] It should be noted that like reference numerals and letters refer to like items in the several views of the drawings, and as such, definitions of those items in one view are deemed to be incorporated in the other views to the extent that they do not conflict with the definitions in the other views. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not necessarily to scale.

[0028] It should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Please refer to Figures 1 to 3 The present invention provides a Bailey beam with a large span composite section for precise positioning, comprising two chords 1, two vertical members 2, and a reinforcing frame 3. The chords 1 include a first channel steel 11 and a second channel steel 12, which are connected by connectors 8. The two vertical members 2 are welded to the two chords 1 at both ends to form a stable frame structure. The two ends of the first channel steel 11 and the second channel steel 12 are provided with joints 6 for splicing Bailey frames.

[0030] Specifically, the connector 6 includes a female connector and a male connector. The female connector and the male connector are distributed at both ends of a chord 1. The connectors 6 on the upper and lower chords 1 are arranged in opposite directions, so that when multiple Bailey bridges are connected across the span, their ends can be connected accordingly without changing the direction.

[0031] Example 1: The first channel steel 11 and the second channel steel 12 have the same structure. They are both welded together by two channel steels of different sizes. The smaller channel steel abuts against the inside of the larger channel steel. This design allows each first channel steel 11 and second channel steel 12 to adopt a composite section, which can effectively improve the moment of inertia of the section, increase the strength, and increase the spanning capacity.

[0032] Example 2: The first channel steel 11 and the second channel steel 12 have the same structure. They are both welded together by channel steel and angle steel. The angle steel is welded to the inner side of the channel steel to increase the modulus, so that each first channel steel 11 and the second channel steel 12 is a composite section, which effectively improves the moment of inertia of the section, increases the strength, and increases the spanning capacity. Moreover, the setting of angle steel and channel steel is easier to weld than the setting of double channel steel.

[0033] In this embodiment, the vertical rod 2 is vertically connected between the chord rods 1, and the reinforcing frame 3 is a rectangular frame formed by continuous welding of the web members. The reinforcing frame 3 is inclined and connected between the vertical rods 2 at a certain angle to form the basic structure of the entire Bailey bridge. At this time, the web members formed by the reinforcing frame 3 are located between the adjacent chord rods 1 and vertical rods 2 to form a triangular structure.

[0034] The inner side of the Bailey beam is provided with a connecting plate 4, which is welded to the vertical rod 2 to increase the welding area between the vertical rod 2 and the reinforcing frame 3, thereby further enhancing the stability of the reinforcing frame 3 structure.

[0035] In order to facilitate the welding positioning of the reinforcing frame 3, the outer part of the two vertical rods 2 is provided with a detachable positioning mechanism 7, which comprises two positioning members, each of which comprises a sliding frame 71, a positioning block 72 and a locking structure. The sliding frame 71 has an opening on one side and is in a U-shaped structure, which is convenient for detachable buckling on the outer part of the vertical rod 2.

[0036] It should be noted that the opening of the sliding frame 71 is designed to be buckled on the outer part of the vertical rod 2 from the front of the vertical rod 2 for installation and removal, while ensuring close contact with the vertical rod 2 during use.

[0037] Further, the positioning block 72 is connected to the side of the sliding frame 71 and can be located on one side of the vertical rod 2 and correspond to the reinforcing frame 3. A supporting surface 721 is formed on each positioning block 72, which is inclined to the vertical surface and the supporting surfaces 721 of the two positioning blocks 72 face each other.

[0038] Such design makes the end of the reinforcing frame 3 stably abut on the supporting surface 721, ensuring the positioning accuracy of the reinforcing frame 3 and the vertical rod 2 during welding.

[0039] In an optional embodiment, the locking structure comprises a mounting bracket 73 and a locking rod 74. The mounting bracket 73 is connected to the side of the sliding frame 71, and the locking rod 74 is threadedly connected to the sliding frame 71. A through hole is formed in the sliding frame 71, and the end of the locking rod 74 passes through the through hole and abuts against the side of the vertical rod 2, thereby realizing the fixation of the sliding frame 71.

[0040] The end of the locking rod 74 extending to the outside of the mounting bracket 73 is provided with a handle 741, which is convenient for manual adjustment by the operator.

[0041] In order to further improve the flexibility of positioning, a connecting rod 75 is arranged between the two positioning members, so that the two positioning members can relatively move to change the distance. A sliding groove 76 is formed in the inside of the sliding frame 71, and a sliding block 77 is arranged at the end of the connecting rod 75 and is slidably connected to the sliding groove 76, thereby realizing the adjustability of the distance between the two positioning members.

[0042] In addition, angle plates 722 are arranged on the adjacent surfaces of the sliding frame 71 and the positioning block 72 to enhance the stability of the structure.

[0043] In actual use, the operator first installs two positioning members outside the vertical rod 2, and the specific operation steps are as follows: first, the opening part of the sliding frame 71 is aligned with the vertical rod 2, and then it is buckled outside the vertical rod 2, ensuring that the sliding frame 71 is tightly attached to the vertical rod 2, next, by rotating the handle 741, the locking rod 74 is screwed into the perforation of the sliding frame 71, and the end part is abutted with the side surface of the vertical rod 2, so as to fix the position of the sliding frame 71, according to the size and position of the reinforcing frame 3, the distance between the two positioning blocks 72 is adjusted, so that the supporting surface 721 can accurately correspond to the end part of the reinforcing frame 3, finally, the end part of the reinforcing frame 3 is abutted on the supporting surface 721 of the positioning block 72, ensuring that the position of the reinforcing frame 3 is accurate, the connecting plate 4 and the reinforcing frame 3 are welded, the installation and fixation of the reinforcing frame 3 and the connecting plate 4 on one side are completed, then the positioning mechanism 7 is removed from the front of the vertical rod 2, and the other connecting plate 4 is welded with the reinforcing frame 3.

[0044] In this paper, the front, back, up, down and other orientation words are defined by the position of the parts in the drawing and the position of the parts relative to each other in the drawing, only to express the clarity and convenience of the technical scheme. It should be understood that they are relative concepts, which can be changed accordingly according to different ways of use and placement, and the use of orientation words should not limit the scope of the application.

[0045] In the case of no conflict, the above-mentioned embodiments and features in the embodiments can be combined with each other.

[0046] The above is only the preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A Bailey beam with a large span composite section and precise positioning, characterized in that, include: A Bailey beam comprises two chords (1) and two vertical members (2), with the two vertical members (2) welded to the two ends of the two chords (1) to form a rectangular frame structure; A reinforcing frame (3) is disposed between the two vertical bars (2); The positioning mechanism (7) is detachably disposed outside the vertical rod (2). The positioning mechanism (7) includes two positioning components, which are symmetrically arranged. Each positioning component includes a sliding frame (71), a positioning block (72), and a locking structure. The sliding frame (71) has an opening on one side so that it can be detachably fastened to the outside of the vertical rod (2). The positioning block (72) is connected to the side of the sliding frame (71) so that the positioning block (72) can be located on one side of the vertical rod (2) and correspond to the reinforcing frame (3). The locking structure is disposed on the side of the opening of the sliding frame (71) to limit the position of the sliding frame (71) outside the vertical rod (2). By setting the two positioning mechanisms (7) on the vertical rod (2), the two positioning blocks (72) are close to provide a recessed abutment position so that a corner of the reinforcing frame (3) can be abutted and positioned, thereby determining the welding position of a corner of the reinforcing frame (3) and the vertical rod.

2. The Bailey beam with precise positioning and large-span composite section as described in claim 1, characterized in that: The locking structure includes a mounting bracket (73) and a locking rod (74). The mounting bracket (73) is connected to the side of the sliding frame (71), and the locking rod (74) is threadedly connected to the sliding frame (71).

3. The Bailey beam with precise positioning and large-span composite section as described in claim 2, characterized in that: The sliding frame (71) has a through hole, and the end of the locking rod (74) passes through the through hole and abuts against the side of the vertical rod (2).

4. The Bailey beam with precise positioning and large-span composite section as described in claim 1, characterized in that: Each of the positioning blocks (72) is provided with a support surface (721), the support surface (721) is inclined to the vertical plane, and the support surfaces (721) of the two positioning blocks (72) are facing each other.

5. The Bailey beam with precise positioning and large-span composite section as described in claim 2, characterized in that: A connecting rod (75) is provided between the two sliding frames (71). A sliding groove (76) is provided inside the sliding frame (71). A slider (77) is provided at the end of the connecting rod (75). The slider (77) is slidably connected to the sliding groove (76).

6. The Bailey beam with precise positioning and large-span composite section as described in claim 5, characterized in that: Angle plates (722) are provided on the adjacent surfaces of the sliding frame (71) and the positioning block (72).

7. The Bailey beam with precise positioning and large-span composite section as described in claim 2, characterized in that: The locking bar (74) has a handle (741) at one end extending to the outside of the mounting bracket (73).

8. The Bailey beam with precise positioning and large-span composite section as described in claim 1, characterized in that: The inner side of the Bailey beam is provided with a connecting plate (4), which is connected to the reinforcing frame (3).

9. The Bailey beam with precise positioning and large-span composite section as described in claim 1, characterized in that: The chord (1) includes a first channel steel (11) and a second channel steel (12), both of which are welded from double channel steel.

10. The Bailey beam with precise positioning and large-span composite section as described in claim 1, characterized in that: The upper and lower ends of the Bailey beam are provided with two pairs of joints (6), and the upper and lower pairs of joints (6) are arranged in opposite directions.

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