Steel box girder assembling jig frame

Abstract

The utility model discloses a kind of steel box girder assembling jig frames, including support device, height adjusting device, length adjusting device, the support device is spaced apart left and right with two, support device includes bottom plate, support column, support plate;The bottom plate is horizontally arranged;The support column is vertically arranged on the top surface of bottom plate;The support plate is horizontally arranged on the top surface of support column;The height adjusting device is arranged on the top surface of support plate;The length adjusting device is arranged between two support devices.The utility model can adjust the height and length of jig frame according to actual construction condition and requirement, to adapt to the installation height and width of steel box girder in actual construction, improve flexibility, facilitate use.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction, and in particular to a steel box girder assembly frame. Background Technology

[0002] Precast bridge construction technology is a construction method in which the main components of the bridge's superstructure, substructure, and ancillary structures are prefabricated in a factory and then transported to the site for assembly. This technology achieves standardized manufacturing of bridge components through industrialized production methods, combined with on-site modular assembly processes, effectively shortening the construction cycle and reducing environmental impact. Its core advantages lie in improving project quality, reducing construction safety risks, and minimizing construction waste emissions.

[0003] When precast box girders are transported to the assembly site, to ensure the accuracy of the position and outer dimensions of the steel box girder segments and the installation precision of the bridge site, the box girder segments need to be assembled and bolted together using assembly jigs. Existing assembly jigs are mostly of fixed dimensions and height. Furthermore, to resist lateral buckling and prevent slippage, two jigs are usually connected by crossbeams, which are also of fixed length and cannot be adjusted. This prevents adjustment as needed in different construction sections, necessitating the customization of various sizes and increasing construction costs. Utility Model Content

[0004] The purpose of this utility model is to provide a steel box girder assembly jig to solve the technical problems mentioned in the background art. To achieve the above objectives, the present invention adopts the following technical solution: A steel box girder assembly jig includes a support device, a height adjustment device, and a length adjustment device. Two support devices are spaced apart on the left and right sides. Each support device includes a base plate, a support column, and a support plate. The base plate is horizontally positioned. The support column is vertically positioned on the top surface of the base plate. The support plate is horizontally positioned on the top surface of the support column. The height adjustment device is located on the top surface of the support plate. The length adjustment device is located between the two support devices.

[0005] Furthermore, the height adjustment device includes a lower support, adjusting blocks, an upper support, a sleeve, a first screw, and a clamping nut; the lower support is horizontally positioned on the top surface of the support plate, and its cross-section is an isosceles trapezoid with waistlines on both the front and rear sides; two adjusting blocks are provided, each with an isosceles trapezoidal cross-section with waistlines on both the upper and lower sides, and the two adjusting blocks are mirror-symmetrically positioned on the waist of the lower support, with their lower waistlines matching the waistlines of the lower support; the sleeve is horizontally positioned inside the adjusting blocks; the screw passes through the sleeves of the two adjusting blocks, connecting the two adjusting blocks to each other; the clamping nut is located on both the front and rear sides of the screw; the upper support is horizontally positioned, and its cross-section is an isosceles trapezoidal cross-section with waistlines on both the front and rear sides, with its two side waistlines matching the upper waistlines of the two adjusting blocks respectively.

[0006] Furthermore, the height adjustment device also includes a lower connecting block, an upper connecting block, a second screw, and a tensioning nut; the lower connecting block is located on the left and right sides of the lower support; the upper connecting block is located on the left and right sides of the upper support; the second screw passes through the upper connecting block and the lower connecting block respectively, connecting the upper support and the lower support; the tensioning nut is located on the upper part and the lower part of the second screw respectively.

[0007] Furthermore, the height adjustment device also includes a mounting block and mounting bolts; the mounting block is located on the front and rear sides of the lower support, and a first mounting hole is vertically opened on the mounting block; the support plate has a second mounting hole corresponding to the position of the first mounting hole; the mounting bolts pass through the first mounting hole and the second mounting hole to connect the lower support to the support plate.

[0008] Furthermore, the height adjustment device also includes a top plate and a pad; the top plate is horizontally disposed on the top surface of the upper support, and a groove is formed on its top surface; the pad is disposed in the groove, and its top surface is higher than the top surface of the bottom plate.

[0009] Furthermore, the length adjustment device includes a fixed plate and a telescopic plate; the fixed plate is horizontally arranged, with its left end located on the right side wall of the support column of the left support device, the fixed plate is hollow inside, and the right end is open; the telescopic plate is a U-shaped structure with the opening facing forward, with its right end located on the left side wall of the support column of the right support device, the left end inserted into the fixed plate, and can move inside the fixed plate.

[0010] Furthermore, locking holes are provided on the front and rear side walls of the fixed plate and the telescopic plate; locking bolts are also included; the locking bolts pass through the locking holes of the fixed plate and the telescopic plate to fix the fixed plate and the telescopic plate to each other.

[0011] Furthermore, a limiting block is provided on the rear side wall of the right side of the fixed plate; a limiting rod is provided on the front side of the left side of the telescopic plate.

[0012] The advantages of this utility model compared to the prior art are as follows: 1. This utility model, by setting up a support device, a height adjustment device, and a length adjustment device, can support the steel box girder during construction, which facilitates the bolting and splicing of the steel box girder. At the same time, through the height adjustment device and the length adjustment device, the height and length of the jig can be adjusted according to the actual construction conditions and requirements to adapt to the installation height and width of the steel box girder in actual construction, thereby improving flexibility and ease of use.

[0013] 2. In the height adjustment device of this utility model, by setting a lower support, an adjusting block and an upper support, the adjusting block can move on the lower support, thereby changing the ground height of the adjusting block and the upper support, realizing the adjustment of the frame height. It is convenient to use and has a stable structure.

[0014] 3. In the length adjustment device of this utility model, by setting a fixed plate and a telescopic plate, the telescopic plate can move in the fixed plate, thereby adjusting the relative distance between the two support devices, and thus adjusting the length of the jig to adapt to the width of the steel box girder, further improving flexibility. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the support device of this utility model; Figure 3 This is a schematic diagram of the height adjustment device of this utility model; Figure 4 This is a schematic diagram of the length adjustment device of this utility model; Figure 5 This is a schematic diagram of the length adjustment device of this utility model from another perspective; In the attached image: 1-Support device; 101-Base plate; 102-Support column; 103-Support plate; 2-Height adjustment device; 201-Lower support; 202-Adjusting block; 203-Upper support; 204-Sleeve; 205-First screw; 206-Pressure nut; 207-Lower connecting block; 208-Upper connecting block; 209-Second screw; 210-Tightening nut; 211-Mounting block; 212-Mounting bolt; 213-Top plate; 214-Padded block; 3-Length adjustment device; 301-Fixing plate; 302-Telescopic plate; 303-Locking hole; 304-Locking bolt; 305-Limit block; 306-Limit rod; Detailed Implementation To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are merely to provide the reader with a thorough understanding of one or more aspects of the utility model, and these aspects can be achieved even without these specific details.

[0016] like Figure 1-5 As shown, a steel box girder assembly jig includes a support device 1, a height adjustment device 2, and a length adjustment device 3. Two support devices 1 are spaced apart on the left and right sides. Each support device 1 includes a base plate 101, a support column 102, and a support plate 103. The base plate 101 is horizontally positioned; the support column 102 is vertically positioned on the top surface of the base plate 101; the support plate 103 is horizontally positioned on the top surface of the support column 102; the height adjustment device 2 is located on the top surface of the support plate 103; and the length adjustment device 3 is positioned between the two support devices 1. The support device 1 bears the main load-bearing capacity. The height adjustment device 2 can be adjusted according to the required installation height of the steel box girder, and the length adjustment device 3 can be adjusted according to the actual width of the steel box girder. In use, the support device 1 is installed on the base surface. The number of jigs required for each steel box girder is determined according to the actual construction conditions, and the height and length are adjusted using the height adjustment device 2 and the length adjustment device 3.

[0017] The height adjustment device 2 includes a lower support 201, an adjusting block 202, an upper support 203, a sleeve 204, a first screw 205, and a clamping nut 206. The lower support 201 is horizontally positioned on the top surface of the support plate 103, and its cross-section is an isosceles trapezoid with its waistline on both the front and rear sides. Two adjusting blocks 202 are provided, each with an isosceles trapezoidal cross-section with its waistline on the upper and lower sides. The two adjusting blocks 202 are mirror-symmetrically positioned on the waist of the lower support 201, with their lower waistlines matching the waistline of the lower support 201. The segment 202 can slide along the waist of the lower support 201; the sleeve 204 is horizontally positioned inside the adjusting block 202; the screw passes through the sleeve 204 of the two adjusting blocks 202, connecting the two adjusting blocks 202 to each other; the clamping nut 206 is located on both sides of the screw; the upper support 203 is horizontally positioned, and its cross-section is an isosceles trapezoidal structure with the waistline on both sides, and its two waistlines match the upper waistlines of the two adjusting blocks 202 respectively. The upper support 203 can slide along the waist of the two adjusting blocks 202. When height adjustment is required, loosen the clamping nut 206 to move the two adjusting blocks 202 along the waist of the lower support 201, thereby increasing or decreasing the height of the adjusting blocks 202 from the ground, thus adjusting the height of the frame. After adjustment, tighten the clamping nut 206 to fix the two adjusting blocks 202, and finally place the upper support 203 on the top surface of the two adjusting blocks 202.

[0018] The height adjustment device 2 further includes a lower connecting block 207, an upper connecting block 208, a second screw 209, and a tensioning nut 210. The lower connecting block 207 is located on the left and right sides of the lower support 201; the upper connecting block 208 is located on the left and right sides of the upper support 203; the second screw 209 passes through the upper connecting block 208 and the lower connecting block 207 respectively, connecting the upper support 203 and the lower support 201; the tensioning nut 210 is located at the upper and lower parts of the second screw 209 respectively. By passing the second screw 209 through the upper connecting block 208 and the lower connecting block 207, and then screwing the tensioning nut 210 into the second screw 209, the upper support 203 and the lower support 201 are tightened and fixed.

[0019] The height adjustment device 2 further includes a mounting block 211 and mounting bolts 212. The mounting block 211 is located on both the front and rear sides of the lower support 201, and a first mounting hole is vertically formed on the mounting block 211. The support plate 103 has a second mounting hole corresponding to the first mounting hole. The mounting bolts 212 pass through the first and second mounting holes to connect the lower support 201 to the support plate 103. The mounting block 211 and mounting bolts 212 facilitate the disassembly and assembly of the height adjustment device 2 and the support device 1, achieving modularity and facilitating transportation and storage.

[0020] The height adjustment device 2 further includes a top plate 213 and a pad 214; the top plate 213 is horizontally disposed on the top surface of the upper support 203, and a groove is formed on its top surface; the pad 214 is disposed in the groove, and its top surface is higher than the top surface of the bottom plate 101. The pad is made of rubber material, which can provide a certain buffer when the steel box girder is placed on the jig, thus protecting the steel box girder and the jig.

[0021] In a further embodiment, the adjusting block 202 has a positioning line along the waistline on its side, and the lower support 201 has a scale line along the waistline on its side, which facilitates the determination of the adjustment height, so that multiple jigs have the same height and ensure construction accuracy.

[0022] The length adjustment device 3 includes a fixed plate 301 and a telescopic plate 302. The fixed plate 301 is horizontally positioned, with its left end attached to the right side wall of the support column 102 of the left support device 1. The fixed plate 301 is hollow inside, with an opening at its right end. The telescopic plate 302 is a U-shaped structure with its opening facing forward. Its right end is attached to the left side wall of the support column 102 of the right support device 1, and its left end is inserted into the fixed plate 301, allowing it to move within the fixed plate 301. Based on the actual length of the steel box girder under construction, the relative distance between the two support devices 1 is adjusted by moving the telescopic plate 302 on the fixed plate 301, thereby adjusting the length of the support frame.

[0023] Both the fixed plate 301 and the telescopic plate 302 have locking holes 303 on their front and rear side walls; they also include locking bolts 304; the locking bolts 304 pass through the locking holes 303 of the fixed plate 301 and the telescopic plate 302 to fix the fixed plate 301 and the telescopic plate 302 to each other. After the length is adjusted, the fixed plate 301 is fixed by passing the locking bolts 304 through the locking holes 303 of the fixed plate 301 and the telescopic plate 302. Multiple locking bolts 304 can be used as needed to improve locking stability.

[0024] A limiting block 305 is provided on the rear side wall of the right side inside the fixed plate 301; a limiting rod 306 is provided on the front side of the left side of the telescopic plate 302. The limiting block 305 and the limiting rod 306 prevent the telescopic plate 302 from coming off the fixed plate 301.

[0025] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A steel box girder assembly jig, comprising a support device, a height adjustment device, and a length adjustment device, characterized in that: Two support devices are provided at left and right intervals. Each support device includes a base plate, a support column, and a support plate. The base plate is horizontally arranged. The support column is vertically arranged on the top surface of the base plate. The support plate is horizontally arranged on the top surface of the support column. The height adjustment device is located on the top surface of the support plate. The length adjustment device is located between the two support devices. The length adjustment device includes a fixed plate and a telescopic plate; the fixed plate is horizontally set, with its left end set on the right side wall of the support column of the left support device, the fixed plate is hollow inside and open at the right end; the telescopic plate is a U-shaped structure with the opening facing forward, its right end set on the left side wall of the support column of the right support device, its left end inserted into the fixed plate and can move inside the fixed plate. A limiting block is provided on the rear side wall of the right side of the fixed plate; a limiting rod is provided on the front side of the left side of the telescopic plate.

2. The steel box girder assembly jig according to claim 1, characterized in that: The height adjustment device includes a lower support, adjusting blocks, an upper support, a sleeve, a first screw, and a clamping nut. The lower support is horizontally positioned on the top surface of the support plate, and its cross-section is an isosceles trapezoid with waistlines on both the front and rear sides. Two adjusting blocks are provided, each with an isosceles trapezoidal cross-section with waistlines on both the upper and lower sides. The two adjusting blocks are mirror-symmetrically positioned on the waist of the lower support, with their lower waistlines matching the waistlines of the lower support. The sleeve is horizontally positioned inside the adjusting blocks. The screw passes through the sleeves of the two adjusting blocks, connecting the two adjusting blocks to each other. The clamping nut is located on both the front and rear sides of the screw. The upper support is horizontally positioned, and its cross-section is an isosceles trapezoidal structure with waistlines on both the front and rear sides, with its two side waistlines matching the upper waistlines of the two adjusting blocks, respectively.

3. The steel box girder assembly jig according to claim 2, characterized in that: The height adjustment device further includes a lower connecting block, an upper connecting block, a second screw, and a tensioning nut; the lower connecting block is located on the left and right sides of the lower support; the upper connecting block is located on the left and right sides of the upper support; the second screw passes through the upper connecting block and the lower connecting block respectively, connecting the upper support and the lower support; the tensioning nut is located on the upper part and the lower part of the second screw respectively.

4. The steel box girder assembly jig according to claim 2, characterized in that: The height adjustment device further includes a mounting block and mounting bolts; the mounting block is located on the front and rear sides of the lower support, and a first mounting hole is vertically opened on the mounting block; the support plate has a second mounting hole corresponding to the position of the first mounting hole; the mounting bolts pass through the first mounting hole and the second mounting hole to connect the lower support to the support plate.

5. The steel box girder assembly jig according to claim 2, characterized in that: The height adjustment device also includes a top plate and a pad; the top plate is horizontally positioned on the top surface of the upper support, and a groove is formed on its top surface; the pad is positioned within the groove, and its top surface is higher than the top surface of the bottom plate.

6. The steel box girder assembly jig according to claim 1, characterized in that: The fixed plate and the telescopic plate are provided with locking holes on their front and rear side walls; the fixed plate and the telescopic plate are also provided with locking bolts; the locking bolts pass through the locking holes of the fixed plate and the telescopic plate to fix the fixed plate and the telescopic plate to each other.

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