CN217647827U - A precise positioning device for longitudinally reinforced U-ribs of steel box girder for bridges - Google Patents

Abstract

The utility model relates to a longitudinally reinforced U-rib precise positioning device for a steel box girder for bridges, which comprises an H-shaped steel, a fixing seat and a jacking device. The H-shaped steel is welded on a tire frame, the fixing seat is slidably clamped on the H-shaped steel, and the fixing seat is arranged There are two, and the jacking device is connected between the two fixing bases. The utility model has ingenious and reasonable structural design and strong practicability. The positioning device realizes the precise positioning of the U-shaped reinforcing plate on the bottom plate of the steel box girder, and the U-shaped reinforcing plate is limited and fixed on the bottom plate of the steel box girder, which can ensure The U-shaped reinforcement plate will not be displaced during welding, thus effectively ensuring the welding accuracy and welding quality, and improving the overall structural strength and bearing performance after welding.

Description

A precise positioning device for longitudinally reinforced U-ribs of steel box girder for bridges

technical field

The utility model belongs to the technical field of assembling of steel box beams, in particular to a precise positioning device for longitudinally reinforced U-ribs of steel box beams for bridges.

Background technique

With the rapid development of my country's economy, the transportation industry has gained a broad space for development, and the scale of bridge construction is increasing day by day. As a common structural form of steel structure girder bridges, steel box girder contains many plates. U-shaped reinforcement plates will be installed on the bottom plate of steel box girder to strengthen the structural strength and firmness of the entire steel box girder. In the traditional processing process, for the U-shaped reinforcement plate in the steel box girder, the auxiliary line is often drawn manually to assemble the U-shaped reinforcement plate on the bottom plate of the steel box girder. When it is moved into place, it wastes manpower, and the placement position is not accurate enough, which affects the actual processing quality. Moreover, when the U-shaped reinforcement plate is welded to the bottom plate of the steel box girder, the U-shaped reinforcement plate is prone to displacement, which affects the actual welding operation.

SUMMARY OF THE INVENTION

The purpose of the utility model is to provide a technical scheme of a precise positioning device for longitudinally reinforcing U-ribs of steel box girder for bridges, aiming at the shortcomings of the prior art. The structural design is ingenious and reasonable, and the practicability is strong. The precise positioning of the plate on the bottom plate of the steel box girder, and the limit fixing of the U-shaped reinforcement plate on the bottom plate of the steel box girder can ensure that the U-shaped reinforcement plate will not be displaced during welding, thereby effectively ensuring the welding accuracy and welding quality. Improve the overall structural strength and load-bearing performance after welding.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical solutions:

A precise positioning device for longitudinally reinforced U-ribs of steel box girder for bridges is characterized in that: it comprises H-shaped steel, a fixing seat and a jacking device, the H-shaped steel is welded on a tire frame, the fixing seat is slidingly clamped on the H-shaped steel, and the fixing seat is There are two, and the jacking device is connected between the two fixed seats; the H-shaped steel beam is directly welded on the tire frame, forming an integrated structure with the tire frame, which is jointly used for the overall splicing and assembly of the steel box beam, and the design is ingenious and reasonable. In addition, welding and fixing the H-beam and the tire frame can ensure the overall structural strength and firmness of the positioning device, and ensure the precise positioning of the positioning device on the U-shaped reinforcement plate. The position of the fixing seat on the H-shaped steel can adjust the position of the jacking device, so as to realize the precise positioning and adjustment of different U-shaped reinforcing plates. Precise positioning and fixing on the bottom plate of the steel box girder; the positioning device realizes the precise positioning of the U-shaped reinforcing plate on the bottom plate of the steel box girder, and the U-shaped reinforcing plate is limited and fixed on the bottom plate of the steel box girder, which can ensure During welding, the U-shaped reinforcement plate will not be displaced, thereby effectively ensuring the welding accuracy and welding quality, and improving the overall structural strength and bearing performance after welding.

Further, the fixed seat includes a positioning column and a limiting pressure plate, the bottom end of the positioning column is provided with a bottom support plate, one end of the bottom support plate is provided with a slot, and the bottom support plate is clamped on the upper flange plate of the H-shaped steel through the slot. , The limit pressure plate and the positioning column are detachably connected, and the limit pressure plate is firmly fixed with the web plate of the H-beam through the set screw, and the positioning column is realized on the upper flange plate of the H-beam through the slot on the bottom support plate. The preliminarily clamped limit, and then fixed between the limit pressure plate and the positioning column, and cooperated with the limit of the set screw to effectively ensure the installation firmness and reliability of the fixed seat on the H-beam. When it is necessary to adjust the clamping device When it is in position, loosen the set screw and adjust the position of the jacking device by moving the position of the fixed seat on the H-beam.

Further, the limit pressure plate includes a first vertical section, a horizontal section and a second vertical section, the horizontal section is connected between the first vertical section and the second vertical section, the first vertical section is connected with the positioning column, and the horizontal section limit sticks. Attached to the bottom surface of the upper flange plate of the H-beam, the second vertical section is attached to the web plate of the H-beam, and the end of the set screw passes through the second vertical section and interferes with the web of the H-beam. The structure design is ingenious and reasonable. The horizontal section is limited to the bottom surface of the upper flange plate, and the second vertical section is limited to the web plate of the H-beam. Effectively limit the displacement of the fixing seat on the H-beam, so that the fixing seat can only slide horizontally along the H-beam, and then through the tightening limit of the set screw, the fixing seat is fixed at the upper position of the H-beam, effectively ensuring the jacking device. The stability and reliability of the structure can ensure the precise positioning and fixing of the U-shaped reinforcement plate by the jacking device.

Further, a perforation and a slot hole are arranged on the first vertical section, a limit rod is arranged on the positioning column, the limit rod is matched with the perforation, the limit rod passes through the perforation, and the end of the limit rod is provided with a tightening nut, and the slot The hole matches the bottom support plate, and the limit pressure plate is clamped on the bottom support plate through the slot hole. The tightening limit of the fixing nut ensures the firmness of the installation between the limit pressure plate and the positioning column, and the slot hole cooperates with the bottom support plate to realize the plug connection between the limit pressure plate and the bottom support plate, effectively improving the relationship between the limit pressure plate and the bottom support plate. The connection and assembly between the positioning columns are firm and reliable, the design is ingenious and reasonable, and the limit pressure plate and the positioning column can be detachably installed. The removal of the H-beam does not affect the use of the tire frame, and can realize the recycling of the device, thereby effectively saving the construction cost.

Further, the jacking device includes a side plate group and a moving plate, the side plate group is clamped on the positioning column, a fixed plate is fixedly connected between the two side plate groups, the moving plate is connected to the fixed plate, and the moving plate and the fixed plate can be connected together. Adjust the connection, press the end face of the limit U-shaped reinforcement plate through the moving plate, install a side plate group on each fixed seat, and connect the two side plate groups through the fixed plate to ensure the structural balance and firmness of the jacking device At the same time, the fixed plate is convenient for the installation of the movable plate. The end face of the U-shaped reinforcement plate can be pressed against the limit through the movable plate, and the movable plate can be adjusted and connected to the fixed plate, so that the movable plate can be installed on the bottom plate of the steel box girder according to the U-shaped reinforcement plate. The actual installation position of the U-shaped reinforcement plate can be adjusted, which has a wide range of applications and ensures the precise positioning of the U-shaped reinforcement plate.

Further, an adjusting rod is arranged on the moving plate, the adjusting rod is connected to the fixed plate through, and the adjusting rod is limited and fixed on the fixed plate by the clamping nut. The structure design is ingenious and reasonable. The two clamping nuts are limited and fixed on the fixed plate to ensure the firmness of the connection between the moving plate and the fixed plate, and the position of the moving plate can be adjusted in this way, so that the moving plate can be placed in the steel box according to the U-shaped reinforcement plate. The actual installation position on the beam bottom plate is adjusted to ensure the precise limit of the end face of the U-shaped reinforcement plate by the moving plate. adjustment operation.

Further, the side plate group includes a plug-in board and a U-shaped card board, the fixed board is connected between the two U-shaped card boards, a T-shaped slot is provided on the positioning column, and the T-shaped plug at the end of the plug-in board is matched and plugged in. In the T-shaped slot, the plug-in board is matched in the U-shaped card slot of the U-shaped card board, and the plug-in board is fixedly connected to the U-shaped card board through fixing bolts, and the U-shaped card slot is used to realize the plug-in and U-shaped card board. The initial insertion limit of the plug-in board is fixed, and then fixed with the fixing bolts, which can effectively ensure the installation firmness between the plug-in board and the U-shaped card board, and ensure the overall structural strength. The plug-in board is realized through the cooperation of the T-shaped slot and the T-shaped plug The precise tenon joint with the positioning column can effectively ensure the firmness and stability of the connection, and the installation and disassembly are convenient and simple.

Further, a top plate is fixedly connected to the two U-shaped clamping plates, and the top plate is provided with a top-tightening bolt. The top plate is designed to facilitate the setting of the top-tightening bolt, and the side of the limit U-shaped reinforcement plate is pressed against the top-tightening bolt. The tightening bolt thread is connected through the top plate, and the two sides of the end of the U-shaped reinforcing plate can be tightened and limited by the tightening bolt, which cooperates with the tightening limit of the moving plate on the end face of the U-shaped reinforcing plate to further improve the U-shaped The positioning accuracy and placement stability of the reinforcement plate on the bottom plate of the steel box girder are more convenient for subsequent welding operations, and each top plate can be provided with multiple jacking bolts. The jacking design of multiple jacking bolts can improve the Actual top tight limit effect.

Further, at least two sets of connecting hole groups are arranged on the plug board and the U-shaped card board, and each set of connecting hole groups includes at least two connecting holes evenly distributed up and down, the connecting holes are matched with the fixing bolts, and the fixing bolts pass through the corresponding connection holes. The connecting hole connects the plug-in board and the U-shaped card board fixedly, and the structure design is ingenious and reasonable. The length of the group is adjustable to expand the scope of application, and each group of connection holes contains multiple connection holes distributed up and down, so that the connection and installation between the plug-in board and the U-shaped card board are realized by multiple fixing bolts, which effectively ensures the overall structure. Strength and firmness.

The utility model has the following beneficial effects due to the adoption of the above-mentioned technical solutions:

The utility model has ingenious and reasonable structural design and strong practicability. The positioning device realizes the precise positioning of the U-shaped reinforcing plate on the bottom plate of the steel box girder, and the U-shaped reinforcing plate is limited and fixed on the bottom plate of the steel box girder, which can ensure During welding, the U-shaped reinforcement plate will not be displaced, thereby effectively ensuring the welding accuracy and welding quality, and improving the overall structural strength and bearing performance after welding. In actual use, the positioning device is provided at both ends of the U-shaped reinforcement plate, and the two ends of the U-shaped reinforcement plate are limited and fixed by the positioning devices on both sides, which effectively ensures the positioning accuracy and firmness. The moving plate in the middle clamps the corresponding end face of the U-shaped reinforcement plate to limit the position. The two moving plates just clamp the two ends of the U-shaped reinforcement plate to the limit, and then tighten the bolts to clamp the end of the U-shaped reinforcement plate The two sides are further tightened and limited, and cooperate with the moving plate to effectively limit the displacement of the U-shaped reinforcement plate, and realize the precise positioning and limit fixation of the U-shaped reinforcement plate on the steel box beam, which is more convenient for the actual welding process. , improve machining accuracy and machining quality.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described:

Fig. 1 is a kind of state structure schematic diagram of the utility model when a steel box girder longitudinally reinforced U-rib precise positioning device for bridges is applied;

Fig. 2 is the structural representation of the utility model;

FIG. 3 is a schematic diagram of the installation structure between the jacking device and the fixing seat in the utility model;

Fig. 4 is the exploded view of the fixed seat in the utility model;

FIG. 5 is a schematic diagram of the installation structure of the plug-in board and the U-shaped card board in the utility model.

In the picture: 1-H-beam; 2-fixed seat; 3-top tightening device; 4-tire frame; 5-positioning column; 6-limiting plate; 7-bottom support plate; 8-slot; Screw; 10-first vertical segment; 11-horizontal segment; 12-second vertical segment; 13-perforation; 14-slotted hole; 15-limiting rod; 16-fastening nut; 17-side plate group; 18- Moving plate; 19-fixing plate; 20-adjusting rod; 21-clamping nut; 22-insert plate; 23-U-type card board; 24-T-type slot; 25-T-type plug; 26-fixing bolt; 27-top plate; 28-top tightening bolt; 29-connection hole; 30-steel box girder bottom plate; 31-U-shaped reinforcement plate; 32-U-shaped card slot.

Detailed ways

As shown in FIGS. 1 to 5 , it is a precise positioning device for longitudinally reinforced U-ribs of steel box girder for bridges of the present invention, comprising H-shaped steel 1 , a fixed seat 2 and a jacking device 3 , and the H-shaped steel 1 is welded on the tire frame 4 On the upper, the fixed seat 2 is slidably clamped on the H-shaped steel 1, there are two fixed seats 2, and the clamping device 3 is connected between the two fixed seats 2; the H-shaped steel 1 beam is directly welded on the tire frame 4, and the tire The frame 4 forms an integrated structure and is used for the overall splicing and assembly of the steel box beam. The design is ingenious and reasonable, and the welding and fixing of the H-beam 1 and the tire frame 4 can ensure the overall structural strength and firmness of the positioning device. The precise positioning function of the U-shaped reinforcing plate 31, and the fixed seat 2 is slidably clamped on the H-shaped steel 1, and the position of the pressing device 3 can be adjusted by adjusting the position of the fixed seat 2 on the H-shaped steel 1. For the precise positioning and adjustment of different U-shaped reinforcing plates 31, the jacking device 3 realizes the pressing and fixing of the U-shaped reinforcing plates 31, so as to ensure the precise positioning and fixing of the U-shaped reinforcing plates 31 on the bottom plate 30 of the steel box girder; The precise positioning of the U-shaped reinforcing plate 31 on the bottom plate 30 of the steel box girder is realized, and the U-shaped reinforcing plate 31 is limited and fixed on the bottom plate 30 of the steel box girder, which can ensure that the U-shaped reinforcing plate 31 will not be displaced during welding. In this way, the welding accuracy and welding quality are effectively ensured, and the overall structural strength and bearing performance after welding are improved.

The fixed seat 2 includes a positioning column 5 and a limit pressure plate 6. The bottom end of the positioning column 5 is provided with a bottom support plate 7, and one end of the bottom support plate 7 is provided with a slot 8, and the bottom support plate 7 is clamped to the H through the slot 8. On the upper flange plate of the section steel 1, the limit pressure plate 6 is detachably connected with the positioning column 5, and the limit pressure plate 6 is tightly fixed with the web plate of the H section steel 1 through the set screw 9, Slot 8, to realize the preliminary clamping limit of the positioning column 5 on the upper flange plate of the H-shaped steel 1, and then fix the limit pressure plate 6 and the positioning column 5, and cooperate with the limit of the set screw 9 to effectively ensure The installation firmness and reliability of the fixing seat 2 on the H-beam 1. When the position of the jacking device 3 needs to be adjusted, loosen the set screw 9, and move the position of the fixing seat 2 on the H-beam 1 to adjust the position of the jacking device 3. The position is adjusted, the design is ingenious and reasonable, and the use and adjustment are convenient and simple.

The limiting platen 6 includes a first vertical section 10, a horizontal section 11 and a second vertical section 12, the horizontal section 11 is connected between the first vertical section 10 and the second vertical section 12, and the first vertical section 10 is in phase with the positioning column 5. Connection, the horizontal section 11 is attached to the bottom surface of the upper flange plate of the H-shaped steel 1, the second vertical section 12 is attached to the web of the H-shaped steel 1, and the end of the set screw 9 passes through the The two vertical sections 12 are limited to the web of the H-beam 1, and the structural design is clever and reasonable. The horizontal section 11 is limited to the bottom surface of the upper flange plate, and the second vertical section 12 is limited to the web of the H-beam 1. , the design of inserting the bottom support plate 7 on the upper flange plate can effectively limit the displacement of the fixing seat 2 on the H-shaped steel 1, so that the fixing seat 2 can only slide horizontally along the H-shaped steel 1, and then through the tightening The jacking limit of the screw 9 makes the fixing seat 2 fixed at the upper position of the H-shaped steel 1, which effectively ensures the structural stability and reliability of the jacking device 3, thereby ensuring the precise positioning and fixed effect.

The first vertical section 10 is provided with a through hole 13 and a slot hole 14, a limit rod 15 is set on the positioning column 5, the limit rod 15 is matched with the through hole 13, the limit rod 15 penetrates the through hole 13, and the end of the limit rod 15 A tightening nut 16 is provided at the bottom, the slot hole 14 is matched with the bottom support plate 7, and the limit pressure plate 6 is clamped on the bottom support plate 7 through the slot hole 14. The precise plug connection between the limit pressure plate 6 and the positioning column 5, and then cooperate with the tightening limit of the tightening nut 16 to ensure the installation firmness between the limit pressure plate 6 and the positioning column 5, and the slot 14 and the bottom support plate 7 cooperate to realize the plug connection between the limit pressure plate 6 and the bottom support plate 7, effectively improve the connection and assembly firmness and reliability between the limit pressure plate 6 and the positioning column 5, the design is ingenious and reasonable, and the limit pressure plate 6 and the positioning column 5. The positioning columns 5 can be detachably installed. After the U-shaped reinforcing plate 31 is installed as a whole, the fixing base 2 can be removed from the H-shaped steel 1 together with the pressing device 3, which does not affect the use of the tire frame 4. Realize the recycling and reuse of the device, thereby effectively saving the construction cost.

The jacking device 3 includes a side plate group 17 and a moving plate 18. The side plate group 17 is clamped on the positioning column 5, a fixed plate 19 is fixedly connected between the two side plate groups 17, and the moving plate 18 is connected to the fixed plate 19. , the moving plate 18 and the fixed plate 19 can be connected in an adjustable way, and the moving plate 18 is pressed against the end face of the limit U-shaped reinforcement plate 31, a side plate group 17 is installed on each fixed seat 2, and the two side plate groups 17 pass through The fixed plate 19 is connected to ensure the structural balance and firmness of the jacking device 3. At the same time, the fixed plate 19 is convenient for the installation of the movable plate 18. It can be adjusted and connected to the fixed plate 19 so that the movable plate 18 can be adjusted according to the actual installation position of the U-shaped reinforcement plate 31 on the steel box girder bottom plate 30 .

The movable plate 18 is provided with an adjustment rod 20, the adjustment rod 20 is connected to the fixed plate 19 through, and the adjustment rod 20 is limited and fixed on the fixed plate 19 by the clamping nut 21. The structure design is ingenious and reasonable, and the adjustment rod 20 is connected to the fixed plate 19. plate 19, and is limited and fixed on the fixed plate 19 by the left and right clamping nuts 21, so as to ensure the firmness of the connection between the moving plate 18 and the fixed plate 19, and the position of the moving plate 18 can be adjusted in this way, thereby The movable plate 18 can be adjusted according to the actual installation position of the U-shaped reinforcement plate 31 on the bottom plate 30 of the steel box girder, so as to ensure the precise limit of the end face of the U-shaped reinforcement plate 31 by the movable plate 18. Tighten the clamping nut 21 to ensure the stability of the overall structure, facilitate disassembly and assembly, and facilitate the actual adjustment operation.

The side plate group 17 includes a plug-in board 22 and a U-shaped card board 23, the fixing board 19 is connected between the two U-shaped card boards 23, the positioning column 5 is provided with a T-shaped slot 24, and the end of the plug-in board 22 is T-shaped. The plug-in block 25 is matched and inserted in the T-shaped slot 24, the plug-in board 22 is matched and clamped in the U-shaped card slot 32 of the U-shaped card board 23, and the plug-in board 22 is fixedly connected with the U-shaped card board 23 through the fixing bolts 26. , through the U-shaped card slot 32 to realize the initial insertion limit of the plug-in board 22 and the U-shaped card board 23, and then cooperate with the fixing bolts 26 for fixing, effectively ensuring the installation firmness between the plug-in board 22 and the U-shaped card board 23, To ensure the overall structural strength, the precise tenon joint between the insert plate 22 and the positioning post 5 is achieved through the cooperation of the T-shaped slot 24 and the T-shaped insert block 25, which effectively ensures the firmness and stability of the connection, and is convenient and simple to install and disassemble.

The top plate 27 is fixedly connected to the two U-shaped clamping plates 23, and the top plate 27 is provided with a top tightening bolt 28, and the top plate 27 is designed to facilitate the top tightening. The arrangement of the bolts 28 can be used to tighten the two sides of the end of the U-shaped reinforcing plate 31 through the tightening bolts 28, which is matched with the pressing and limiting of the end face of the U-shaped reinforcing plate 31 by the moving plate 18 to further improve the U-shaped reinforcing plate. The positioning accuracy and placement stability of the reinforcing plate 31 on the bottom plate 30 of the steel box girder are more convenient for subsequent welding operations, and each top plate 27 can be provided with a plurality of jacking bolts 28. The tight design can improve the actual top tight limit effect.

At least two groups of connecting holes are provided on the plug board 22 and the U-shaped card board 23, and each group of connecting holes includes at least two connecting holes 29 evenly distributed up and down. The connecting holes 29 are matched with the fixing bolts 26. The fixing bolts 26 through the corresponding connection hole 29 to connect the plug board 22 and the U-shaped card board 23 fixedly, the structure design is ingenious and reasonable, through the design of multiple groups of connection hole groups, the plug-in board 22 and the U-shaped card board 23 can be connected. The length is properly adjusted, so that the length of the side plate group 17 can be adjusted and the scope of application can be expanded, and each group of connection hole groups includes a plurality of connection holes 29 distributed up and down, so that the connection between the plug board 22 and the U-shaped card board 23 The connection and installation are realized through a plurality of fixing bolts 26, which effectively ensures the overall structural strength and firmness.

The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made on the basis of the present invention in order to achieve basically the same technical effect are all included in the protection scope of the present invention.

Claims (9)

1. The utility model provides an accurate positioner of U rib is vertically strengthened to steel box girder for bridge which characterized in that: including H shaped steel, fixing base and top tight device, H shaped steel welding is on the bed-jig, the fixing base slip joint is in on the H shaped steel, the fixing base is provided with two, the top tight device is connected two between the fixing base.

2. The accurate positioning device for the U-shaped rib longitudinally reinforced by the steel box girder for the bridge according to claim 1, is characterized in that: the fixing seat comprises a positioning column and a limiting pressing plate, a bottom supporting plate is arranged at the bottom end of the positioning column, an inserting groove is formed in one end of the bottom supporting plate, the bottom supporting plate is connected to the upper flange plate of the H-shaped steel in a clamping mode through the inserting groove, the limiting pressing plate is detachably connected with the positioning column, and the limiting pressing plate is fixedly abutted to the web plate of the H-shaped steel through a set screw.

3. The accurate positioning device for the U-shaped rib longitudinally reinforced by the steel box girder for the bridge as claimed in claim 2, is characterized in that: spacing clamp plate includes first vertical section, horizontal segment and second vertical section, the horizontal segment is connected first vertical section with between the second vertical section, first vertical section with the reference column is connected, the horizontal segment is spacing attached on the bottom surface of the last flange board of H shaped steel, the second vertical section is spacing attached on the web of H shaped steel, holding screw's tip is passed the second vertical section is contradicted spacingly on the web of H shaped steel.

4. The accurate positioning device for the U-shaped rib longitudinally reinforced by the steel box girder for the bridge as claimed in claim 3, is characterized in that: the first vertical section is provided with a through hole and a slotted hole, the positioning column is provided with a limiting rod, the limiting rod is matched with the through hole, the limiting rod penetrates through the through hole, a fastening nut is arranged at the end part of the limiting rod, the slotted hole is matched with the bottom support plate, and the limiting pressing plate is in limiting clamping connection with the bottom support plate through the slotted hole.

5. The accurate positioning device for the U-shaped rib longitudinally reinforced by the steel box girder for the bridge as claimed in claim 2, is characterized in that: the jacking device comprises side plate groups and a movable plate, the side plate groups are clamped on the positioning columns, a fixed plate is fixedly connected between the two side plate groups, the movable plate is connected on the fixed plate, the movable plate is adjustably connected with the fixed plate, and the movable plate abuts against the end face of the U-shaped limiting reinforcing plate tightly.

6. The accurate positioning device for the U rib longitudinally reinforced by the steel box girder for the bridge as claimed in claim 5, characterized in that: the movable plate is provided with an adjusting rod, the adjusting rod is connected to the fixed plate in a penetrating mode, and the adjusting rod is fixed on the fixed plate in a limiting mode through a clamping nut.

7. The accurate positioning device for the U rib longitudinally reinforced by the steel box girder for the bridge as claimed in claim 5, characterized in that: the curb plate group is including picture peg and U type cardboard, the fixed plate is connected two between the U type cardboard, be provided with T type slot on the reference column, the T type inserted block of picture peg tip matches and pegs graft in the T type slot, the picture peg matches the joint and is in the U type draw-in groove of U type cardboard, just the picture peg pass through fixing bolt with U type cardboard fixed connection.

8. The accurate positioning device for the U-shaped rib longitudinally reinforced by the steel box girder for the bridge as claimed in claim 7, is characterized in that: two equal fixedly connected with roof on the U type cardboard, be provided with the puller bolt on the roof, through the puller bolt supports the side of tight spacing U type gusset plate.

9. The accurate positioning device for the U-shaped rib longitudinally reinforced by the steel box girder for the bridge as claimed in claim 7, is characterized in that: the picture peg with all be provided with two sets of at least connecting hole groups on the U type cardboard, every group including two at least upper and lower evenly distributed's connecting hole in the connecting hole group, the connecting hole with fixing bolt phase-match, fixing bolt passes and corresponds the connecting hole will the picture peg with U type cardboard fixed connection.

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