Splicing and positioning device for steel box girder

Abstract

The invention provides a steel box girder splicing and positioning device which comprises a bottom frame, two distribution girders are arranged on the two sides of the top of the bottom frame in parallel, and a bearing plate is erected in the middle of the top of the bottom frame. Sand boxes are evenly arranged on the top of the distribution beam, and a box beam adjusting mechanism is arranged in the middle of the top of the bearing plate. According to the steel box girder splicing and positioning device, in the splicing construction process of the steel box girders, the steel box girders can be transversely and longitudinally adjusted, meanwhile, the angles of the steel box girders can be rotationally adjusted, alignment can be rapidly completed when the steel box girders are spliced, the construction efficiency is improved, and the construction period is shortened; in the splicing construction of the steel box girders, manual intervention is reduced in position and angle adjustment of the to-be-spliced steel box girders, the labor cost is reduced, and the manpower expenditure is reduced.

Description

Technical Field

[0001] The invention belongs to a steel box girder construction device, and in particular relates to a steel box girder splicing and positioning device. Background Art

[0002] Steel box beam, also known as steel plate box beam, is a common structural form for long-span bridges. It is generally used on bridges with larger spans. It is called steel box beam because it looks like a box. After processing, the steel box beam is transported to the construction site, and the steel box beam is lifted in sections using lifting equipment and spliced ​​on the bridge base. After splicing, each steel box beam is welded and poured to complete the construction of the bridge.

[0003] The current steel box girder positioning device can only move and position the steel box girder in the horizontal and vertical directions. For example, the Chinese utility model patent document with the authorization announcement number CN221398658U discloses a positioning mechanism for steel box girder splicing, which can move and adjust the steel box girder in the horizontal and vertical directions. However, it is not convenient to adjust the steel box girder when the angle is offset. It needs to be repeatedly lifted and adjusted, which reduces the construction efficiency and prolongs the construction period.

[0004] Therefore, it is necessary to design a steel box girder splicing positioning device that can not only adjust the steel box girder horizontally and longitudinally, but also rotate and adjust its angle, which is conducive to quickly completing the alignment when the steel box girder is spliced, improving construction efficiency, and shortening the construction period to solve the current technical problems. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a steel box girder splicing and positioning device which can not only adjust the steel box girder laterally and longitudinally, but also rotationally adjust its angle, which is conducive to quickly completing the alignment when the steel box girder is spliced, improving construction efficiency, and shortening the construction period.

[0006] The technical solution of the present invention is: a steel box beam splicing and positioning device comprises a base frame, two distribution beams are arranged in parallel on both sides of the top of the base frame, and a bearing plate is arranged in the center of the top of the base frame; sand boxes are evenly arranged on the top of the distribution beams, and a box beam adjustment mechanism is arranged in the center of the top of the bearing plate; the box beam adjustment mechanism has a longitudinal groove fixedly arranged on the top of the bearing plate, a transverse groove is arranged inside the longitudinal groove for sliding along the longitudinal direction, a longitudinal driving hydraulic cylinder for driving the transverse groove to slide back and forth is arranged at one end of the longitudinal groove, a support seat is arranged inside the transverse groove for sliding along the transverse direction, a transverse driving hydraulic cylinder for driving the support seat to slide back and forth along the transverse direction is arranged at one end of the transverse groove, a turntable is rotatably arranged on the top of the support seat, a rotating hydraulic cylinder for driving the turntable to rotate is arranged inside the support seat, and a lifting hydraulic cylinder is arranged in a circular array on the top of the turntable.

[0007] The top two sides of the bearing plate are symmetrically provided with limiting roller assemblies matching the two sides of the steel box beam, and the bearing plate is provided with a telescopic driving mechanism for driving the limiting roller assemblies to move away from or approach the bearing plate.

[0008] The telescopic driving mechanism has a slide seat symmetrically arranged on the top of the supporting plate, two guide rods are arranged inside the slide seat for transverse sliding, a telescopic driving plate and a bottom rod are fixedly arranged on the guide rods, a telescopic driving hydraulic cylinder connected to the telescopic driving plate is arranged on the supporting plate, and the limiting roller assembly is mounted above the bottom rod.

[0009] The limiting roller assembly has two parallel side support rods, roller support rods are arranged between the two ends of the two side support rods, rollers are evenly arranged between the two roller support rods, and the ends of the rollers are vertically rotatably connected to the roller support rods.

[0010] The position limiting roller assembly is mounted above the bottom rod through an angle adjustment mechanism.

[0011] The angle adjustment mechanism comprises a vertical rod fixedly arranged on the top of the bottom rod corresponding to the side support rod, one end of the side support rod is rotatably connected to one side of the top end of the vertical rod, and a connecting rod parallel to the side support rod is rotatably arranged on one side of the bottom end of the vertical rod, an adjustment plate parallel to the vertical rod is slidably arranged on the guide rod, one end of the side support rod and the connecting rod facing away from the vertical rod are rotatably connected to the adjustment plate, the adjustment plate is slidably connected to the guide rod in a vertical direction, and an adjustment component for driving the adjustment plate to move laterally is arranged at the end of the guide rod.

[0012] The adjusting assembly comprises a supporting plate fixedly arranged at the end of the guide rod, an adjusting screw is rotatably arranged between the supporting plate and the bottom rod, one end of the adjusting screw has a handle, a moving rod is threadedly connected to the adjusting screw, both ends of the moving rod are fixedly arranged with a sliding sleeve, the sliding sleeve is slidably mounted on the outer side of the guide rod, the adjusting plate is slidably mounted inside the sliding sleeve in a vertical direction, a sliding groove matching the guide rod is opened on the adjusting plate in a vertical direction, and the guide rod is slidably arranged inside the sliding groove in a vertical direction.

[0013] A brush assembly parallel to the rollers is centrally arranged between two adjacent rollers, and the brush assembly is used to clean the position on the outside of the steel box girder corresponding to the rollers during jacking.

[0014] The brush assembly comprises a guide groove fixedly arranged between the two roller support rods, a brush plate is slidably arranged inside the guide groove, and bristles are arranged on one side of the brush plate; a reciprocating drive mechanism is arranged on one side of the roller support rod, and the reciprocating drive mechanism has a connecting strip fixedly connected to one end of the brush plate, a notch is opened on the connecting strip, a driving shaft is slidably arranged inside the notch, a driving turntable is arranged under the connecting strip, the driving shaft is eccentrically fixed on one side of the driving turntable, a hydraulic motor is fixedly mounted on the connecting strip through a motor support plate, and the hydraulic motor drives the driving turntable to rotate.

[0015] A slide matching the transverse groove is provided at the bottom of the support seat, and a slide plate slidably connected to the inside of the transverse groove is fixedly provided at the bottom of the slide; lower slide rollers are evenly provided along the longitudinal direction at the bottom of the transverse groove, and both ends of the lower slide rollers are rotatably supported at the bottom of the transverse groove through lower slide roller shaft seats, and side pulleys abutting against the inner sides of the longitudinal groove are evenly provided on both sides of the transverse groove, and the side pulleys are rotatably supported on the sides of the transverse groove through side pulley shaft seats; upper stop edges corresponding to the side pulleys are fixedly provided on the tops of both sides of the longitudinal groove.

[0016] Beneficial effects of the present invention:

[0017] (1) The steel box girder splicing positioning device of the present invention can not only adjust the steel box girder horizontally and vertically during the splicing construction of the steel box girder, but also can rotate and adjust its angle, which is conducive to quickly completing the alignment when the steel box girder is spliced, improving the construction efficiency and shortening the construction period;

[0018] (2) During the splicing construction of steel box girders, the position and angle adjustment of the steel box girders to be spliced ​​can reduce manual intervention, reduce labor costs, and reduce manpower expenditure;

[0019] (3) After the position of the steel box girder to be spliced ​​is adjusted and connected, the steel box girder is lifted by the lifting hydraulic cylinder, and the longitudinal driving hydraulic cylinder drives the transverse groove to slide inside the longitudinal groove, which can directly realize the jacking construction of the steel box girder and ensure the efficiency of the steel box girder splicing construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the use status of the steel box girder splicing and positioning device in the present invention.

[0021] Figure 2 It is a structural schematic diagram of the steel box girder splicing and positioning device in the present invention.

[0022] Figure 3 This is one of the structural schematic diagrams of the box beam adjustment mechanism in the present invention.

[0023] Figure 4This is the second structural schematic diagram of the box beam adjusting mechanism in the present invention.

[0024] Figure 5 for Figure 4 Cross-section view at AA in the middle.

[0025] Figure 6 This is one of the partial structural schematic diagrams of the box beam adjustment mechanism in the present invention.

[0026] Figure 7 This is the second partial structural schematic diagram of the box beam adjustment mechanism in the present invention.

[0027] Figure 8 It is a structural schematic diagram of another embodiment of the limiting roller assembly in the present invention.

[0028] Fig. 9 for Figure 8 A partial enlarged view of point B in the middle. DETAILED DESCRIPTION

[0029] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is not intended to be any limitation on the present invention and its application or use. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present invention thorough and complete and to fully express the scope of the present invention to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary and not as limitations.

[0030] The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" or "comprise" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0031] like Figures 1 to 5As shown, the steel box beam splicing and positioning device comprises a base frame 1, two distribution beams 3 are arranged in parallel on both sides of the top of the base frame 1, and a bearing plate 4 is arranged in the center of the top of the base frame 1; sand boxes 31 are evenly arranged on the top of the distribution beams 3, and a box beam adjustment mechanism 5 is arranged in the center of the top of the bearing plate 4; the box beam adjustment mechanism 5 has a longitudinal groove 54 fixedly arranged on the top of the bearing plate 4, a transverse groove 56 is arranged inside the longitudinal groove 54 for sliding along the longitudinal direction, a longitudinal driving hydraulic cylinder 55 for driving the transverse groove 56 to slide back and forth is arranged at one end of the longitudinal groove 54, a support seat 53 is arranged inside the transverse groove 56 for sliding along the transverse direction, a transverse driving hydraulic cylinder 57 for driving the support seat 53 to slide back and forth in the transverse direction is arranged at one end of the transverse groove 56, and a turntable 51 is rotatably arranged on the top of the support seat 53 , a rotating hydraulic cylinder 58 for driving the turntable 51 to rotate is arranged inside the support seat 53, and a lifting hydraulic cylinder 52 is arranged on the top of the turntable 51 in a circular array; in this embodiment, when the steel box girder 9 is spliced, the steel box girder to be spliced ​​is hoisted to the top of the base frame 1 by a crane, and is placed on the top of the sand box 2 to stably support the steel box girder, and the deviation between the flat joints of the steel box girder is measured, and the steel box girder is adjusted according to the deviation; first, the angle of the steel box girder 9 needs to be adjusted, specifically, the lifting hydraulic cylinder 52 is controlled to lift the steel box girder 9 upward to a certain height, so that the bottom of the steel box girder 9 is separated from the sand box 2, and the steel box girder 9 is lifted by the lifting hydraulic cylinder 52, and then the rotating hydraulic cylinder 58 drives the turntable 51 to rotate slowly, and the turntable 51 drives the steel box girder 9 to move The steel box beam 9 is rotated to adjust the angle of the steel box beam 9 until the end faces of the two adjacent steel box beams 9 are parallel; secondly, the steel box beam 9 is adjusted in the transverse and longitudinal directions as needed to align the two adjacent steel box beams 9; the steel box beam 9 is adjusted in the transverse direction by keeping the lifting state of the steel box beam 9 by the lifting hydraulic cylinder 52, and then the support seat 53 is driven by the transverse driving hydraulic cylinder 57 to slide inside the transverse groove 56, so as to adjust the position of the steel box beam 9 in the transverse direction; the steel box beam 9 is adjusted in the longitudinal direction by keeping the lifting state of the steel box beam 9 by the lifting hydraulic cylinder 52, and then the transverse groove 56 is driven by the longitudinal driving hydraulic cylinder 55 to slide inside the longitudinal groove 54, so as to adjust the position of the steel box beam 9 in the longitudinal direction. ; Through the steel box girder splicing positioning device in this embodiment, during the splicing construction process of the steel box girder 9, not only can the steel box girder 9 be adjusted horizontally and vertically, but also its angle can be rotated and adjusted, which is conducive to quickly completing the alignment when the steel box girder 9 is spliced, improving construction efficiency, and shortening the construction period; during the splicing construction of the steel box girder 9, the position and angle adjustment of the steel box girder 9 to be spliced ​​reduces manual intervention, reduces labor costs, and reduces manpower expenditure; after the position adjustment of the steel box girder 9 to be spliced ​​is completed and the connection is completed, the steel box girder 9 is lifted by the lifting hydraulic cylinder 52, and the longitudinal driving hydraulic cylinder 55 is used to drive the transverse groove 56 to slide inside the longitudinal groove 54, which can directly realize the jacking construction of the steel box girder 9 and ensure the efficiency of the steel box girder splicing construction.

[0032] In some embodiments, the base frame 1 has columns 11 fixed on the ground, and the columns 11 are connected into an integrated structure by a connecting frame 12, and the distribution beam 3 is fixed at the top of the column 11; specifically, six columns 11 are arranged in a 2×3 matrix on the ground, of which three columns 11 are evenly fixed at the bottom of the distribution beam 3, and three sand boxes 2 are evenly arranged on the top of the distribution beam 3, and the bottom of the sand box 2 is fixed on the top of the distribution beam 3. After the steel box beam is erected, the sand inside the sand box 2 is released and the support is converted to facilitate the removal of the base frame 1. There are four lifting hydraulic cylinders 52 in a circular array on the top of the turntable 51.

[0033] In some embodiments, Figure 2 As shown, limiting roller assemblies 6 matching the two sides of the steel box girder 9 are symmetrically arranged on both sides of the top of the bearing plate 4, and a telescopic driving mechanism 7 for driving the limiting roller assembly 6 away from or close to the bearing plate 4 is arranged on the bearing plate 4. When the position of the steel box girder 9 is adjusted by the box girder adjusting mechanism 5, the telescopic driving mechanism 7 drives the limiting roller assembly 6 to move away from the bearing plate 4, so as to reserve the placement and adjustment space for the steel box girder 9; after the position of the steel box girder 9 is adjusted, the limiting roller assembly 6 is driven by the telescopic driving mechanism 7 to move close to the bearing plate 4, so that the limiting roller assembly 6 is abutted against the side of the steel box girder 9, and the two limiting roller assemblies 6 are used to limit the two sides of the steel box girder 9 respectively, so as to avoid the displacement of the steel box girder 9 during the jacking process and ensure the accuracy of the jacking construction.

[0034] In some embodiments, as a specific implementation of the telescopic drive mechanism 7, Figure 2 , 6 As shown in 7, the telescopic driving mechanism 7 has a slide 72 symmetrically arranged on the top of the carrying plate 4, and two guide rods 73 are arranged inside the slide 72 for transverse sliding. A telescopic driving plate 74 and a bottom rod 76 are fixedly arranged on the guide rod 73. A telescopic driving hydraulic cylinder 71 connected to the telescopic driving plate 74 is arranged on the carrying plate 4, and a limiting roller assembly 6 is mounted above the bottom rod 76, wherein the telescopic driving hydraulic cylinder 71 drives the telescopic driving plate 74 to move, and the telescopic driving plate 74 drives the guide rod 73 to move inside the slide 72. During the movement of the guide rod 73, the limiting roller assembly 6 is driven to move through the bottom plate 76, so that the limiting roller assembly 6 moves in the direction close to or away from the carrying plate 4; a stopper 75 is fixedly arranged on the end of the guide rod 73 close to the carrying plate 4.

[0035] In some embodiments, Figure 6 and 7As shown, the limiting roller assembly 6 has two parallel side support rods 63, and a roller support rod 61 is arranged between the two ends of the two side support rods 63. Rollers 62 are evenly arranged between the two roller support rods 61. The ends of the rollers 62 are vertically rotatably connected to the roller support rods 61. When the limiting roller assembly 6 abuts against the side of the steel box girder 9, the rollers 62 abut against the side of the steel box girder 9. When the steel box girder 9 moves, the rollers 62 rotate with the movement of the steel box girder 9, thereby reducing the wear on the steel box girder 9.

[0036] In some embodiments, Figure 6 and 7 As shown, the limiting roller assembly 6 is erected above the bottom rod 76 through an angle adjustment mechanism 8. Since different steel box girders have inclined surfaces at different angles on their sides, the angle of the limiting roller assembly 6 can be adjusted through the angle adjustment mechanism 8 so that the angle of the limiting roller assembly 6 is matched with the side of the steel box girder and is suitable for different steel box girder limits.

[0037] In some embodiments, as a specific implementation of the angle adjustment mechanism 8, Figure 6 and 7 As shown, the angle adjustment mechanism 8 has a vertical rod 82 fixedly arranged on the top of the bottom rod 76 corresponding to the side support rod 63, one end of the side support rod 63 is rotatably connected to one side of the top end of the vertical rod 82, and a connecting rod 81 parallel to the side support rod 63 is rotatably arranged on one side of the bottom end of the vertical rod 82. An adjusting plate 87 parallel to the vertical rod 82 is slidably arranged on the guide rod 73, and one end of the side support rod 63 and the connecting rod 81 away from the vertical rod 82 are both rotatably connected to the adjusting plate 87. The adjusting plate 87 is slidably connected to the guide rod 73 in the vertical direction, and an adjusting component for driving the adjusting plate 87 to move laterally is arranged at the end of the guide rod 73. The upper part of the adjusting plate 87, the side support rod 63, the connecting rod 81 and the vertical rod 82 form a rectangular frame structure. The horizontal position of the adjusting plate 87 is adjusted by the adjusting component, so that the angle of the side support rod 63 can be changed, thereby realizing the angle adjustment of the limiting roller assembly 6.

[0038] In some embodiments, Figure 6 and 7As shown, the adjustment assembly has a support plate 84 fixedly arranged at the end of the guide rod 73, an adjustment screw 83 is rotatably arranged between the support plate 84 and the bottom rod 76, one end of the adjustment screw 83 has a handle 831, a moving rod 85 is threadedly connected to the adjustment screw 83, both ends of the moving rod 85 are fixedly provided with a sliding sleeve 86, the sliding sleeve 86 is slidably sleeved on the outer side of the guide rod 73, an adjustment plate 87 is slidably sleeved inside the sliding sleeve 86 in the vertical direction, a sliding groove 871 matching the guide rod 73 is opened in the vertical direction on the adjustment plate 87, and the guide rod 73 is moved in the vertical direction. The adjusting screw 83 is conveniently rotated by the handle 831, and the threaded structure between the adjusting screw 83 and the moving rod 85 can drive the moving rod 85 to move along the axial direction of the adjusting screw 83. When the moving rod 85 moves, it drives the sliding sleeves 86 at both ends to move. When the sliding sleeve 86 moves, it pushes the adjusting plate 87 to move along the guide rod 73. At the same time, through the supporting effect of the connecting rod 81 and the side support rod 63, the sliding sleeve moves up and down along the sliding sleeve 86 while moving along the guide rod 73, thereby realizing the angle adjustment of the limiting roller assembly 6.

[0039] In some embodiments, Figure 8 As shown, a brush assembly 64 parallel to the roller 62 is centrally arranged between two adjacent rollers 62. The brush assembly 64 is used to clean the position on the outside of the steel box girder 9 corresponding to the roller 62 during jacking. During the jacking construction, when the steel box girder moves longitudinally, the brush assembly 64 can clean and remove debris adhering to the outside of the steel box girder 9, thereby reducing the amount of debris entering between the roller 62 and the steel box girder 9 and causing wear on the steel box girder 9 and the roller 62.

[0040] In some embodiments, in order to further improve the cleaning effect, such as Figure 8 and 9As shown, the brush assembly 64 has a guide groove 641 fixedly arranged between two roller support rods 61, a brush plate 642 is slidably arranged inside the guide groove 641, and bristles 643 are arranged on one side of the brush plate 642; a reciprocating drive mechanism 65 is arranged on one side of the roller support rod 61, and the reciprocating drive mechanism 65 has a connecting strip 651 fixedly connected to one end of the brush plate 642, a notch 652 is opened on the connecting strip 651, a driving shaft 653 is slidably arranged inside the notch 652, and a driving turntable 654 is arranged below the connecting strip 651, which drives The shaft 653 is eccentrically fixed on one side of the driving turntable 654, and a hydraulic motor 655 is fixedly mounted on the connecting strip 651 through a motor support plate 656. The hydraulic motor 655 drives the driving turntable 654 to rotate. The driving turntable 654 drives the driving shaft 653 to move inside the slot 652, and pushes the connecting strip 651 to drive the brush plate 642 to reciprocate inside the guide groove 641. The bristles 643 on one side of the brush plate 642 are used to reciprocately clean the side of the steel box girder 9, thereby improving the cleaning effect.

[0041] In some embodiments, Figure 4 and 5 As shown, a slide 531 matching the transverse groove 56 is provided at the bottom of the support seat 53, and a slide plate 532 slidably connected to the inside of the transverse groove 56 is fixedly provided at the bottom of the slide 531; lower slide rollers 561 are evenly provided at the bottom of the transverse groove 56 along the longitudinal direction, and both ends of the lower slide rollers 561 are rotatably supported at the bottom of the transverse groove 56 through lower slide roller shaft seats 563, and side pulleys 562 that abut against the inner sides of the longitudinal groove 54 are evenly provided on both sides of the transverse groove 56, and the side pulleys 562 are rotatably supported on the sides of the transverse groove 56 through side pulley shaft seats 564; upper stop edges 541 corresponding to the side pulleys 562 are fixedly provided at the tops of both sides of the longitudinal groove 54.

[0042] So far, various embodiments of the present invention have been described in detail. In order to avoid obscuring the concept of the present invention, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0043] The above-mentioned embodiments only express some implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A steel box girder splicing positioning device, characterized in that: It comprises a base frame, two distribution beams are arranged in parallel on both sides of the top of the base frame, and a bearing plate is arranged in the middle of the top of the base frame; The top of the distribution beam is evenly provided with sand boxes, and the top of the bearing plate is centrally provided with a box beam adjustment mechanism; The box beam adjustment mechanism has a longitudinal groove fixedly arranged on the top of the bearing plate, a transverse groove is arranged inside the longitudinal groove for sliding along the longitudinal direction, a longitudinal driving hydraulic cylinder is arranged at one end of the longitudinal groove for driving the transverse groove to slide back and forth, a support seat is arranged inside the transverse groove for sliding along the transverse direction, a transverse driving hydraulic cylinder is arranged at one end of the transverse groove for driving the support seat to slide back and forth along the transverse direction, a turntable is rotatably arranged on the top of the support seat, a rotating hydraulic cylinder is arranged inside the support seat for driving the turntable to rotate, and a lifting hydraulic cylinder is arranged in a circular array on the top of the turntable.

2. The steel box girder splicing and positioning device according to claim 1 is characterized in that: The top two sides of the bearing plate are symmetrically provided with limiting roller assemblies matching the two sides of the steel box beam, and the bearing plate is provided with a telescopic driving mechanism for driving the limiting roller assemblies to move away from or approach the bearing plate.

3. The steel box girder splicing and positioning device according to claim 2 is characterized in that: The telescopic driving mechanism has a slide seat symmetrically arranged on the top of the supporting plate, two guide rods are arranged inside the slide seat for transverse sliding, a telescopic driving plate and a bottom rod are fixedly arranged on the guide rods, a telescopic driving hydraulic cylinder connected to the telescopic driving plate is arranged on the supporting plate, and the limiting roller assembly is mounted above the bottom rod.

4. The steel box girder splicing and positioning device according to claim 3 is characterized in that: The limiting roller assembly has two parallel side support rods, roller support rods are arranged between the two ends of the two side support rods, rollers are evenly arranged between the two roller support rods, and the ends of the rollers are vertically rotatably connected to the roller support rods.

5. The steel box girder splicing and positioning device according to claim 4 is characterized in that: The position limiting roller assembly is mounted above the bottom rod through an angle adjustment mechanism.

6. The steel box girder splicing and positioning device according to claim 5, characterized in that: The angle adjustment mechanism comprises a vertical rod fixedly arranged on the top of the bottom rod corresponding to the side support rod, one end of the side support rod is rotatably connected to one side of the top end of the vertical rod, and a connecting rod parallel to the side support rod is rotatably arranged on one side of the bottom end of the vertical rod, an adjustment plate parallel to the vertical rod is slidably arranged on the guide rod, one end of the side support rod and the connecting rod facing away from the vertical rod are rotatably connected to the adjustment plate, the adjustment plate is slidably connected to the guide rod in a vertical direction, and an adjustment component for driving the adjustment plate to move laterally is arranged at the end of the guide rod.

7. The steel box girder splicing and positioning device according to claim 6, characterized in that: The adjusting assembly comprises a supporting plate fixedly arranged at the end of the guide rod, an adjusting screw is rotatably arranged between the supporting plate and the bottom rod, one end of the adjusting screw has a handle, a moving rod is threadedly connected to the adjusting screw, both ends of the moving rod are fixedly arranged with a sliding sleeve, the sliding sleeve is slidably mounted on the outer side of the guide rod, the adjusting plate is slidably mounted inside the sliding sleeve in a vertical direction, a sliding groove matching the guide rod is opened on the adjusting plate in a vertical direction, and the guide rod is slidably arranged inside the sliding groove in a vertical direction.

8. The steel box girder splicing and positioning device according to claim 4, characterized in that: A brush assembly parallel to the rollers is centrally arranged between two adjacent rollers, and the brush assembly is used to clean the position on the outside of the steel box girder corresponding to the rollers during jacking.

9. The steel box girder splicing and positioning device according to claim 8, characterized in that: The brush assembly comprises a guide groove fixedly arranged between the two roller support rods, a brush plate is slidably arranged inside the guide groove, and bristles are arranged on one side of the brush plate; a reciprocating drive mechanism is arranged on one side of the roller support rod, and the reciprocating drive mechanism has a connecting strip fixedly connected to one end of the brush plate, a notch is opened on the connecting strip, a driving shaft is slidably arranged inside the notch, a driving turntable is arranged under the connecting strip, the driving shaft is eccentrically fixed on one side of the driving turntable, a hydraulic motor is fixedly mounted on the connecting strip through a motor support plate, and the hydraulic motor drives the driving turntable to rotate.

10. The steel box girder splicing and positioning device according to claim 1, characterized in that: A slide matching the transverse groove is provided at the bottom of the support seat, and a slide plate slidably connected to the inside of the transverse groove is fixedly provided at the bottom of the slide; lower slide rollers are evenly provided along the longitudinal direction at the bottom of the transverse groove, and both ends of the lower slide rollers are rotatably supported at the bottom of the transverse groove through lower slide roller shaft seats, and side pulleys abutting against the inner sides of the longitudinal groove are evenly provided on both sides of the transverse groove, and the side pulleys are rotatably supported on the sides of the transverse groove through side pulley shaft seats; upper stop edges corresponding to the side pulleys are fixedly provided on the tops of both sides of the longitudinal groove.

Images