Adjustable jig structure for curved steel box girder

Abstract

The utility model discloses a kind of adjustable jig frame structures for curve steel box girder, belong to bridge construction technical field, including the column located in the two sides of curve steel box girder, the middle part of one side of column towards curve steel box girder is equipped with support beam, curve steel box girder is placed on the support beam of two side column;Column is equipped with sleeve pipe above support beam, sleeve pipe is slidably connected with the column, connecting beam is equipped between adjacent two column, connecting beam passes in the sleeve pipe, positioning assembly is equipped on the connecting beam, positioning assembly is slidably connected with the connecting beam, positioning assembly includes sliding block and telescopic adjusting assembly located in sliding block, telescopic adjusting assembly is abutted with curve steel box girder.The utility model can flexibly adjust jig frame size by adjustable jig frame structure, adapt to different curve steel box girder, improve the versatility of jig frame;While through setting multiple rows multiple groups positioning assembly can improve the positioning accuracy of curve steel box girder.

Description

Technical Field

[0001] This utility model belongs to the field of bridge construction technology, and in particular relates to an adjustable frame structure for curved steel box girders. Background Technology

[0002] Steel box girders are usually manufactured in sections in the factory. Each section is welded together from several steel components, and the welding operation is carried out on a jig.

[0003] A steel box girder jig is an important tool or structure used for assembling steel box girders. It primarily supports and positions the various components of the steel box girder, ensuring that the girder maintains its correct shape and dimensional accuracy during welding and other fixing processes. However, existing jigs are generally fixed structures, usually only suitable for positioning and supporting straight steel box girders, and cannot be used for assembling and welding curved steel box girders. Therefore, a jig that can adapt to curved steel box girders is needed to improve the versatility of the jig and increase its efficiency. Utility Model Content

[0004] The purpose of this invention is to provide an adjustable frame structure for curved steel box girders to solve the problems existing in the prior art.

[0005] The objective of this utility model is achieved through the following technical solution: An adjustable frame structure for curved steel box girders includes columns located on both sides of the curved steel box girder, with a support beam in the middle of the side of the column facing the curved steel box girder, and the curved steel box girder is placed on the support beam of the columns on both sides. The column is provided with a sleeve above the support beam. The sleeve is slidably connected to the column vertically. A connecting beam is provided between two adjacent columns. The connecting beam passes through the sleeve. A positioning component is provided on the connecting beam. The positioning component is slidably connected to the connecting beam horizontally. The positioning component includes a sliding block and a telescopic adjustment component located in the sliding block. The telescopic adjustment component abuts against the curved steel box girder.

[0006] Furthermore, the telescopic adjustment assembly includes a rack, a spur gear, a first bevel gear, and a second bevel gear. The rack is perpendicular to the connecting beam and passes through the sliding block. One end of the rack facing the curved steel box girder is provided with an abutment rod. The spur gear is located below the rack and meshes with it. The first bevel gear and the spur gear are coaxial and rotatably connected to the inner wall of the sliding block through a rotating shaft. The second bevel gear meshes with the first bevel gear and is located below the rack. The first bevel gear is rotatably connected to the bottom of the sliding block. A knob extending out of the bottom of the sliding block is provided below the first bevel gear.

[0007] Furthermore, the middle part of the connecting beam is provided with a first sliding groove for the sliding block to slide. The sliding groove faces the curved steel box girder. The first sliding groove of the connecting beam is provided with a through first slot. The sliding block is provided with a first locking bolt assembly. The first locking bolt assembly passes through the sliding block and extends out of the first slot. The sliding block is fixed to the first sliding groove by the first locking bolt assembly.

[0008] Furthermore, the column is provided with a second sliding groove corresponding to the position of the sleeve, and the end of the sleeve near the second sliding groove is provided with a slider that cooperates with the second sliding groove.

[0009] Furthermore, the column has a through second slot in the second sliding groove, and a connecting plate is provided below the sleeve. The connecting plate has a second locking bolt assembly, which passes through the connecting plate and extends out of the second slot. The sleeve is fixed to the second sliding groove by the second locking bolt assembly.

[0010] Furthermore, the bottom of the column is connected to the ground by anchor bolts, and a support column is provided on the side of the column away from the curved steel box girder. One end of the support column is hinged to the column, and the other end of the support column is fixed to the ground.

[0011] Furthermore, a diagonal brace is provided below the support beam, with one end of the diagonal brace fixed to the crossbeam and the other end of the diagonal brace fixed to the column.

[0012] The beneficial effects of this utility model are: 1) The adjustable jig structure allows for flexible adjustment of jig size, adapting to different curved steel box girders and improving the versatility of the jig.

[0013] 2) The telescopic adjustment components are easy to adjust and simple to operate, and can flexibly adapt to the curved surface of the steel box girder; by setting multiple rows and multiple sets of positioning components, the positioning accuracy of the curved steel box girder can be improved. Attached Figure Description

[0014] Figure 1 This is a top view of an adjustable frame structure for curved steel box girders according to the present invention. Figure 2 This is a front view of an adjustable frame structure for curved steel box girders according to the present invention. Figure 3 This is a top view of the column and connecting beam of this utility model; Figure 4 This is a side view of the connecting beam in this utility model; Figure 5 This is a schematic diagram of the internal structure of the sliding block in this utility model; In the figure, 1-curved steel box girder, 2-column, 21-second slide, 22-support column, 23-support beam, 24-diagonal brace, 3-sleeve, 31-connecting plate, 32-second locking bolt assembly, 4-connecting beam, 5-positioning assembly, 51-sliding block, 52-rack, 53-spur gear, 54-first bevel gear, 55-second bevel gear, 56-knob, 57-abutment rod, 58-first locking bolt assembly. Detailed Implementation

[0015] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0016] See Figures 1-5 This utility model provides a technical solution: like Figures 1-3 As shown, an adjustable frame structure for a curved steel box girder includes columns 2 located on both sides of the curved steel box girder 1. A support beam 23 is provided in the middle of the side of the column 2 facing the curved steel box girder 1, and the curved steel box girder 1 is placed on the support beam 23 of the columns 2 on both sides. The column 2 is provided with a sleeve 3 above the support beam 23. The sleeve 3 is slidably connected to the column 2 vertically. A connecting beam 4 is provided between two adjacent columns 2. The connecting beam 4 passes through the sleeve 3. A positioning component 5 is provided on the connecting beam 4. The positioning component 5 is slidably connected to the connecting beam 4 horizontally. The positioning component 5 includes a sliding block 51 and a telescopic adjustment component located in the sliding block 51. The telescopic adjustment component abuts against the curved steel box girder 1.

[0017] Using the above technical solution, two rows of columns 2 are arranged according to the width of the curved steel box girder 1. A component of the curved steel box girder 1 is hoisted onto the support beams 23 of the two side columns 2 using a crane, and supported by the support beams 23. Sleeves 3 are installed on the columns 2, and then connecting beams 4 are inserted into the sleeves 3 of the two adjacent columns 2. The height of the sleeves 3 on the columns 2 is adjusted according to the required positioning height of the curved steel box girder 1.

[0018] Then, a corresponding number of positioning components 5 are installed on the connecting beam 4, slid to the corresponding positions, and locked. By adjusting the telescopic adjustment components, the telescopic adjustment components are brought into contact with the arc-shaped surface of the curved steel box girder 1. Multiple sets of positioning components 5 are used to achieve arc-shaped positioning of the curved steel box girder 1, forming a complete arc segment, ensuring that the curved steel box girder 1 will not shift during subsequent positioning and welding. Similarly, following the above steps, the next section of the curved steel box girder 1 is hoisted, the connection points of the two ends of the curved steel box girder 1 are aligned, and then the next section of the curved steel box girder 1 is positioned using the positioning components 5. After positioning, subsequent welding can be facilitated.

[0019] Similarly, multiple rows of connecting beams 4 can be arranged on the column 2, and multiple sleeves 3 can be placed on the column 2 to support the connecting beams 4. The positioning components 5 on the multiple rows of connecting beams 4 can improve the positioning of the curved steel box girder 1 and ensure accurate positioning.

[0020] Furthermore, such as Figure 4 and Figure 5 As shown, the telescopic adjustment assembly includes a rack 52, a spur gear 53, a first bevel gear 54, and a second bevel gear 55. The rack 52 is perpendicular to the connecting beam 4 and passes through the sliding block 51. One end of the rack 52 facing the curved steel box beam 1 is provided with an abutment rod 57. The spur gear 53 is located below the rack 52 and meshes with the rack 52. The first bevel gear 54 and the spur gear 53 are coaxial and rotatably connected to the inner wall of the sliding block 51 through a rotating shaft. The second bevel gear 55 meshes with the first bevel gear 54 and is located below the rack 52. The first bevel gear 54 is rotatably connected to the bottom of the sliding block 51. A knob 56 extending out of the bottom of the sliding block 51 is provided below the first bevel gear 54.

[0021] Through the above technical solution, rotating the knob 56 causes the second bevel gear 55 to rotate, which in turn drives the first bevel gear 54 to rotate, and then drives the coaxial spur gear 53 to rotate, which in turn drives the rack 52 to extend and retract within the sliding block 51. The extension and retraction adjustment assembly enables the extension and retraction of the abutment rod 57 to facilitate the adjustment of the distance to abut against the curved steel box girder 1, reducing the number of manual adjustments.

[0022] like Figure 5 As shown, a limiting plate is provided at the end of the rack 52 away from the curved steel box girder 1 to prevent the rack 52 from coming off the sliding block 51.

[0023] Furthermore, the middle part of the connecting beam 4 is provided with a first sliding groove for the sliding block 51 to slide. The sliding groove faces the curved steel box beam 1. The first sliding groove of the connecting beam 4 is provided with a through first slot. The sliding block 51 is provided with a first locking bolt assembly 58. The first locking bolt assembly 58 passes through the sliding block 51 and extends out of the first slot.

[0024] Through the above technical solution, the sliding block 51 is fixed to the first sliding groove by the first locking bolt assembly 58. After the sliding block 51 is locked, the telescopic adjustment assembly is adjusted to position the curved steel box girder 1.

[0025] Furthermore, the column 2 is provided with a second sliding groove 21 corresponding to the position of the sleeve 3, and the end of the sleeve 3 near the second sliding groove 21 is provided with a slider that cooperates with the second sliding groove 21.

[0026] Furthermore, the column 2 has a through second slot in the second sliding groove 21, and a connecting plate 31 is provided below the sleeve 3. The connecting plate 31 is provided with a second locking bolt assembly 32, which passes through the connecting plate 31 and extends out of the second slot.

[0027] Through the above technical solution, the sleeve 3 is fixed to the second slide groove 21 by the second locking bolt assembly 32. After the sleeve 3 is fixed, the connecting beam 4 is inserted to avoid inaccurate positioning later.

[0028] Furthermore, the bottom of the column 2 is connected to the ground by anchor bolts, and a support column 22 is provided on the side of the column 2 away from the curved steel box girder 1. One end of the support column 22 is hinged to the column 2, and the other end of the support column 22 is fixed to the ground.

[0029] Through the above technical solution, the column 2 is fixed by the support column 22, which improves the supporting effect of the column 2 on the curved steel box girder 1. At the same time, the position of the column 2 can be adjusted according to actual needs and fixed later, which can easily adapt to curved steel box girders 1 of different widths.

[0030] Furthermore, a diagonal brace 24 is provided below the support beam 23. One end of the diagonal brace 24 is fixed to the crossbeam, and the other end of the diagonal brace 24 is fixed to the column 2.

[0031] The above technical solution further enhances the supporting effect of the support beam 23 on the curved steel box girder 1 by using the diagonal brace 24.

[0032] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. An adjustable jig structure for curved steel box girders, characterized in that: Includes columns (2) located on both sides of the curved steel box girder (1), and a support beam (23) is provided in the middle of the side of the column (2) facing the curved steel box girder (1). The curved steel box girder (1) is placed on the support beam (23) of the columns (2) on both sides. The column (2) is provided with a sleeve (3) above the support beam (23). The sleeve (3) is slidably connected to the column (2) vertically. A connecting beam (4) is provided between two adjacent columns (2). The connecting beam (4) passes through the sleeve (3). A positioning component (5) is provided on the connecting beam (4). The positioning component (5) is slidably connected to the connecting beam (4) horizontally. The positioning component (5) includes a sliding block (51) and a telescopic adjustment component located in the sliding block (51). The telescopic adjustment component abuts against the curved steel box girder (1).

2. The adjustable jig structure for curved steel box girders according to claim 1, characterized in that: The telescopic adjustment assembly includes a rack (52), a spur gear (53), a first bevel gear (54), and a second bevel gear (55). The rack (52) is perpendicular to the connecting beam (4) and passes through the sliding block (51). The rack (52) has an abutment rod (57) at one end facing the curved steel box beam (1). The spur gear (53) is located below the rack (52) and meshes with the rack (52). The first bevel gear (54) and the spur gear (53) are coaxial and rotatably connected to the inner wall of the sliding block (51) through a rotating shaft. The second bevel gear (55) meshes with the first bevel gear (54) and is located below the rack (52). The first bevel gear (54) is rotatably connected to the bottom of the sliding block (51). A knob (56) extending out of the bottom of the sliding block (51) is provided below the first bevel gear (54).

3. The adjustable jig structure for curved steel box girders according to claim 1, characterized in that: The middle part of the connecting beam (4) is provided with a first groove for the sliding block (51) to slide. The groove faces the curved steel box girder (1). The first groove of the connecting beam (4) is provided with a through first slot. The sliding block (51) is provided with a first locking bolt assembly (58). The first locking bolt assembly (58) passes through the sliding block (51) and extends out of the first slot. The sliding block (51) is fixed to the first groove by the first locking bolt assembly (58).

4. The adjustable jig structure for curved steel box girders according to claim 1, characterized in that: The column (2) is provided with a second sliding groove (21) corresponding to the position of the sleeve (3), and the end of the sleeve (3) near the second sliding groove (21) is provided with a slider that cooperates with the second sliding groove (21).

5. The adjustable jig structure for curved steel box girders according to claim 4, characterized in that: The column (2) has a through second slot in the second slide groove (21). The sleeve (3) has a connecting plate (31) below it. The connecting plate (31) has a second locking bolt assembly (32). The second locking bolt assembly (32) passes through the connecting plate (31) and extends out of the second slot. The sleeve (3) is fixed to the second slide groove (21) by the second locking bolt assembly (32).

6. The adjustable jig structure for curved steel box girders according to claim 1, characterized in that: The bottom of the column (2) is connected to the ground by anchor bolts. A support column (22) is provided on the side of the column (2) away from the curved steel box girder (1). One end of the support column (22) is hinged to the column (2), and the other end of the support column (22) is fixed to the ground.

7. The adjustable jig structure for curved steel box girders according to claim 1, characterized in that: The support beam (23) is provided with a diagonal brace (24) below it. One end of the diagonal brace (24) is fixed to the crossbeam, and the other end of the diagonal brace (24) is fixed to the column (2).

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