A steel box girder bridge assembly and alignment device

Abstract

The present invention discloses a steel box girder bridge assembly and position adjustment device, specifically relating to the technical field of steel box girder assembly and position adjustment. It includes a steel box girder assembly and a position adjustment platform. A assembly groove is formed in the middle of the position adjustment platform, and a lifting frame is slidably connected to the inner wall of the assembly groove. A lifting groove is formed in the interior of the lifting frame, and a T-shaped load-bearing plate is slidably connected to the interior of the lifting groove. The steel box girder assembly is located on the surfaces of the T-shaped load-bearing plate and the lifting frame. A lifting mechanism is arranged between the lifting frame and the T-shaped load-bearing plate, and a moving mechanism is arranged between the lifting frame and the position adjustment platform. Through the lifting screw rod of the present invention, the steel box girder assemblies on the two T-shaped load-bearing plates are adjusted and aligned. Thus, when the steel box girder is composed of two parts and assembled, the heights of the two steel box girder assemblies can be ensured to be the same; when the assembled steel box girder assembly is assembled with another two steel box girder assemblies with flush fronts, the height can also be adjusted for assembly and position adjustment.

Description

Technical Field

[0001] The present invention relates to the technical field of steel box girder assembly and position adjustment, and more specifically, the present invention relates to a steel box girder bridge assembly and position adjustment device. Background Art

[0002] A steel box girder, also known as a steel plate box girder, is a common structural form for long-span bridges. It is generally used in bridges with larger spans and is called a steel box girder because its appearance resembles a box. In long-span cable-supported bridges, the span of the steel box main girder can reach several hundred meters or even more than a thousand meters. It is generally fabricated and installed in several beam segments, and its cross-section has the characteristics of a wide and flat shape. A steel box girder is generally formed by connecting a top plate, a bottom plate, webs, diaphragms, longitudinal diaphragms, stiffeners, etc. through full welding.

[0003] Among them, the Chinese utility model patent discloses the publication number CN213896713U, with the name of an improved steel box girder bridge assembly and position adjustment device. This device uses a crane to lift the steel box girder and place it inside the receiving groove to prevent the steel box girder from moving left and right during the splicing process, align the ends of the two steel box girders, and fix the two steel box girders by bolts passing through the mounting plate; by screwing the turntable to drive the screw barrel to move downward on the outer wall of the screw rod, driving the pressing plate to squeeze the steel box girder downward. At this time, multiple springs below the receiving groove are compressed, and the overall receiving groove and the steel box girder move downward, so that the height positions of the two steel box girders are matched; however, this device does not consider the situation where the steel box girder is assembled by two parts, and uses multiple compression springs for docking. Under high pressure, multiple springs are prone to failure. Therefore, a steel box girder bridge assembly and position adjustment device is proposed. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a steel box girder bridge assembly and position adjustment device to solve the problems raised in the above background art.

[0005] To achieve the above object, the present invention provides the following technical solution: A steel box girder bridge assembly and position adjustment device includes a steel box girder assembly and an adjustment platform. A splicing groove is opened in the middle of the adjustment platform, and a lifting frame is slidably connected to the inner wall of the splicing groove. A lifting groove is opened inside the lifting frame, and a T-shaped load-carrying plate is slidably connected to the inside of the lifting groove. The steel box girder assembly is located on the surfaces of the T-shaped load-carrying plate and the lifting frame. A lifting mechanism is provided between the lifting frame and the T-shaped load-carrying plate, a moving mechanism is provided between the lifting frame and the adjustment platform, and a leveling mechanism is provided between the adjustment platform and the steel box girder assembly.

[0006] In order to utilize the lifting screw rod to enable the steel box girder assembly to move up and down along with the T-shaped load plate in the lifting groove, so that the steel box girder assemblies on the two T-shaped load plates are adjusted in height and aligned, the lifting mechanism includes two lifting screw rods rotatably connected to the upper and lower inner walls of the lifting groove and threadedly connected to the T-shaped load plate. A rotating groove is formed at the bottom of the lifting frame. A rotating shaft and a transmission shaft are rotatably connected to the inner wall of the rotating groove. A driving gear and a driven gear are respectively fixedly sleeved on the surfaces of the rotating shaft and the transmission shaft, and the driving gear is meshed with the driven gear. The transmission shaft penetrates out of the rotating groove and penetrates into the lifting groove and is fixedly connected to the lifting screw rod.

[0007] In order to be able to drive the rotation of the rotating shaft by the lifting motor, so that the rotating shaft drives the transmission shaft to rotate through the driving gear and the driven gear, and then the lifting screw rod connected to the transmission shaft can rotate. A lifting motor is fixedly installed at the bottom of the lifting frame, and the output shaft of the lifting motor is fixedly connected to the rotating shaft.

[0008] In order to enable the steel box girder assembly to slide along with the inclined shape of the lifting frame when the steel box girder assembly is lifted, which helps to adjust the assembly of the steel box girder assembly and the adjacent steel box girder assembly. The shape of the side of the lifting frame close to the steel box girder assembly is set to be an inclined shape.

[0009] In order to be able to utilize the moving screw rod to enable the two lifting frames to move towards or away from each other, which helps to assemble the steel box girder assemblies on the lifting frames. The moving mechanism includes two moving screw rods rotatably connected to the inner walls on both sides of the positioning platform. Each moving screw rod is fixedly connected by two threaded rods with the same length and opposite thread rotation directions. The moving screw rods are respectively threadedly connected to the corresponding lifting frames.

[0010] In order to be able to drive the rotation of the moving screw rod by the driving motor, so as to facilitate the control of the assembly. A driving motor is fixedly installed on the outer surface of the positioning platform, and one end of the moving screw rod penetrating out of the assembly groove is fixedly connected to the output shaft of the driving motor.

[0011] In order to be able to utilize the pushing plate to keep the front ends of the steel box girder assemblies on the two lifting frames flush and push them to assemble with another two steel box girder assemblies with flush front ends. U-shaped fixing frames are fixedly installed on the upper surfaces of the front ends of the positioning platform. A pushing screw rod is threadedly connected inside the U-shaped fixing frame, and the other end of the pushing screw rod is rotatably connected to a pushing plate in contact with the steel box girder assembly.

[0012] In order to utilize the limit slide plate so that the pushing plate can push the steel box girder assembly to move without rotation deviation, thereby avoiding deviation during the assembly of the steel box girder assembly and the adjacent steel box girder assembly, limit slide plates are fixedly installed on both the top and bottom of the pushing plate and slide on the surface of the U-shaped fixing frame, and a turntable is fixedly installed at one end of the pushing screw away from the steel box girder assembly.

[0013] Technical effects and advantages of the present invention:

[0014] 1. Compared with the prior art, by setting the lifting screw, the steel box girder assembly can be lifted and lowered in the lifting groove along with the T-shaped loading plate by using the lifting screw, so that the steel box girder assemblies on the two T-shaped loading plates can be adjusted and aligned. Thus, when the steel box girder is assembled from two parts, it can ensure that the heights of the two steel box girder assemblies are the same; when the assembled steel box girder assembly is assembled with another two steel box girder assemblies with flush fronts, the height can also be adjusted for assembly alignment.

[0015] 2. Compared with the prior art, by setting the moving screw, since each moving screw is fixedly connected by two threaded rods with the same length and opposite thread rotation directions, the rotation of the moving screw can make the two lifting frames move towards or away from each other, so that the steel box girder assemblies on the lifting frames can move towards or away from each other, which helps with the assembly.

[0016] 3. Compared with the prior art, by setting the pushing plate, when the turntable is rotated to drive the pushing screw to rotate in the U-shaped fixing frame, the fronts of the two adjacent steel box girder assemblies can be pushed flat.

[0017] Among them, the limit slide plate makes the pushing plate not rotate and deviate when pushing the steel box girder assembly to move, thereby avoiding deviation during the assembly of the steel box girder assembly and the adjacent steel box girder assembly; when the fronts of the steel box girder assemblies on the two lifting frames are flush and the two are assembled, the pushing plate pushes the assembled steel box girder assembly to move, so that it can be assembled with another two steel box girder assemblies with flush fronts, which is convenient for the construction of the bridge. Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the structure of the rotating groove of the present invention.

[0020] Figure 3 It is a schematic diagram of the structure of the lifting frame of the present invention.

[0021] Figure 4 It is a schematic diagram of the structure of the U-shaped fixing frame and the pushing plate of the present invention.

[0022] Figure 5For the present invention Figure 2 Schematic enlarged view of the structure at position A in the present invention.

[0023] Figure 6 For the present invention Figure 3 Schematic enlarged view of the structure at position B in the present invention.

[0024] The reference numerals are: 1, steel box girder assembly; 2, positioning platform; 3, assembly groove; 4, lifting frame; 5, lifting groove; 6, T-shaped load plate; 7, lifting screw; 8, rotating groove; 9, rotating shaft; 10, transmission shaft; 11, driving gear; 12, driven gear; 13, lifting motor; 14, moving screw; 15, driving motor; 16, U-shaped fixing bracket; 17, leveling screw; 18, leveling plate; 19, limiting slide plate; 20, turntable. Detailed implementation manners

[0025] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] As shown in the attached Figure 1 and the attached Figure 2 and the attached Figure 3 A steel box girder bridge assembly and positioning device includes a steel box girder assembly 1 and a positioning platform 2. An assembly groove 3 is provided in the middle of the positioning platform 2, and a lifting frame 4 is slidably connected to the inner wall of the assembly groove 3. A lifting groove 5 is provided inside the lifting frame 4, and a T-shaped load plate 6 is slidably connected to the inside of the lifting groove 5. The steel box girder assembly 1 is located on the surfaces of the T-shaped load plate 6 and the lifting frame 4. A lifting mechanism is provided between the lifting frame 4 and the T-shaped load plate 6, a moving mechanism is provided between the lifting frame 4 and the positioning platform 2, and a leveling mechanism is provided between the positioning platform 2 and the steel box girder assembly 1.

[0027] In a preferred embodiment, as shown in the attached Figure 2 and the attached Figure 3 and the attached Figure 5 and the attached Figure 6 The lifting mechanism includes two lifting screws 7 that are rotatably connected to the upper and lower inner walls of the lifting groove 5 and are threadedly connected to the T-shaped load plate 6. A rotating groove 8 is provided at the bottom of the lifting frame 4, and a rotating shaft 9 and a transmission shaft 10 are rotatably connected to the inner wall of the rotating groove 8. A driving gear 11 and a driven gear 12 are respectively fixedly sleeved on the surfaces of the rotating shaft 9 and the transmission shaft 10, and the driving gear 11 is meshed with the driven gear 12. The transmission shaft 10 penetrates out of the rotating groove 8 and penetrates into the lifting groove 5 and is fixedly connected to the lifting screw 7, so as to be able to utilize the lifting screw 7 to make the steel box girder assembly 1 move up and down in the lifting groove 5 along with the T-shaped load plate 6, so that the steel box girder assemblies 1 on the two T-shaped load plates 6 are positioned and aligned.

[0028] In a preferred embodiment, as shown in the appended Figure 2 and the appended Figure 5 figures, a lifting motor 13 is fixedly installed at the bottom of the lifting frame 4. The output shaft of the lifting motor 13 is fixedly connected to the rotating shaft 9, so as to be able to drive the rotation of the rotating shaft 9 by means of the lifting motor 13. Thus, the transmission shaft 10 is rotated by the driving gear 11 and the driven gear 12, and then the lifting screw rod 7 connected to the transmission shaft 10 can rotate.

[0029] In a preferred embodiment, as shown in the appended Figure 1 , the appended Figure 2 and the appended Figure 3 figures, the shape of the side of the lifting frame 4 close to the steel box girder assembly 1 is set to be an inclined shape, so that when the steel box girder assembly 1 is lifted, the steel box girder assembly 1 slides along with the inclined shape of the lifting frame 4, which helps to adjust the assembly of the steel box girder assembly 1 with the adjacent steel box girder assembly 1.

[0030] In a preferred embodiment, as shown in the appended Figure 2 , the appended Figure 3 and the appended Figure 5 figures, the moving mechanism includes two moving screw rods 14 rotatably connected to the inner walls on both sides of the positioning platform 2. Each moving screw rod 14 is fixedly connected by two threaded rods with the same length and opposite thread rotation directions. The moving screw rods 14 are respectively threadedly connected to the corresponding lifting frames 4, so as to be able to use the moving screw rods 14 to make the two lifting frames 4 move towards or away from each other, thus helping to assemble the steel box girder assemblies 1 on the lifting frames 4.

[0031] In a preferred embodiment, as shown in the appended Figure 1 , the appended Figure 2 and the appended Figure 3 figures, a driving motor 15 is fixedly installed on the outer surface of the positioning platform 2. One end of the moving screw rod 14 passing through the assembly groove 3 is fixedly connected to the output shaft of the driving motor 15, so as to be able to drive the rotation of the moving screw rod 14 by means of the driving motor 15, thus facilitating the control of the assembly.

[0032] In a preferred embodiment, as shown in the appended Figure 1 , the appended Figure 2 and the appended Figure 4 figures, U-shaped fixing frames 16 are fixedly installed on the upper surfaces of the front ends of the positioning platform 2. A leveling screw rod 17 is threadedly connected inside the U-shaped fixing frame 16. The other end of the leveling screw rod 17 is rotatably connected to a leveling plate 18 in contact with the steel box girder assembly 1, so as to use the leveling plate 18 to keep the front ends of the steel box girder assemblies 1 on the two lifting frames 4 flush and push them to assemble with another two steel box girder assemblies 1 with flush front ends.

[0033] In a preferred embodiment, as shown in Figure 1 , Figure 2 and Figure 4 shown, limiting slide plates 19 are fixedly installed on both the top and bottom of the pushing plate 18 and slide on the surface of the U-shaped fixing frame 16. One end of the pushing screw 17 away from the steel box girder assembly 1 is fixedly installed with a turntable 20, so as to drive the pushing screw 17 to rotate through the turntable 20, and by using the limiting slide plates 19, when the pushing plate 18 pushes the steel box girder assembly 1 to move, it does not rotate and shift, thereby avoiding the shift when the steel box girder assembly 1 is assembled with the adjacent steel box girder assembly 1.

[0034] The working principle of the present invention: When in use, two steel box girder assemblies 1 are successively lifted by a crane and separately placed on the positioning platform 2 that has been fixed by a fixing frame, and placed on the surfaces of the T-shaped loading plate 6 and the lifting frame 4 in the assembly groove 3;

[0035] At this time, by rotating the turntable 20 to drive the pushing screw 17 to rotate in the U-shaped fixing frame 16, the fronts of the two adjacent steel box girder assemblies 1 are pushed to be flat and flush;

[0036] Then start the lifting motor 13 to drive the rotating shaft 9 to rotate, so that the rotating shaft 9 drives the transmission shaft 10 to rotate through the driving gear 11 and the driven gear 12, and then the lifting screw 7 connected to the transmission shaft 10 can rotate. The rotation of the lifting screw 7 enables the steel box girder assembly 1 to move up and down in the lifting groove 5 along with the T-shaped loading plate 6, so that the steel box girder assemblies 1 on the two T-shaped loading plates 6 are adjusted in height and aligned;

[0037] Then start the driving motor 15 to drive the moving screw 14 to rotate, so that the two lifting frames 4 move towards or away from each other, and thus the steel box girder assemblies 1 on the lifting frames 4 can move towards or away from each other;

[0038] When the steel box girder is assembled by combining two parts, it can ensure that the heights of the two steel box girder assemblies are the same; when the assembled steel box girder assembly 1 is assembled with another two steel box girder assemblies 1 with flush fronts, the height can also be adjusted by the lifting motor 13 for assembly positioning.

[0039] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0040] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steel box girder bridge assembly and alignment device, comprising a steel box girder assembly (1) and an alignment platform (2), characterized in that: A fitting groove (3) is formed in the middle of the position-adjusting platform (2), and a lifting frame (4) is slidably connected to the inner wall of the fitting groove (3). A lifting groove (5) is formed in the lifting frame (4), and a T-shaped load-carrying plate (6) is slidably connected to the inner part of the lifting groove (5). The steel box girder assembly (1) is located on the surfaces of the T-shaped load-carrying plate (6) and the lifting frame (4). A lifting mechanism is arranged between the lifting frame (4) and the T-shaped load-carrying plate (6), a moving mechanism is arranged between the lifting frame (4) and the position-adjusting platform (2), and a leveling mechanism is arranged between the position-adjusting platform (2) and the steel box girder assembly (1). The moving mechanism includes two moving screws (14) rotatably connected to the inner walls on both sides of the position-adjusting platform (2). Each of the moving screws (14) is fixedly connected by two threaded rods with the same length and opposite thread rotation directions, and the moving screws (14) are respectively threadedly connected to the corresponding lifting frames (4). U-shaped fixing frames (16) are fixedly installed on the upper surfaces of the front ends of the position-adjusting platform (2). A pushing screw (17) is threadedly connected to the inside of the U-shaped fixing frame (16), and the other end of the pushing screw (17) is rotatably connected to a pushing plate (18) in contact with the steel box girder assembly (1).

2. The assembling and position - adjusting device for a steel box girder bridge according to claim 1, wherein: The lifting mechanism includes two lifting screws (7) rotatably connected to the upper and lower inner walls of the lifting groove (5) and threadedly connected to the T-shaped load-carrying plate (6). A rotating groove (8) is formed at the bottom of the lifting frame (4), and a rotating shaft (9) and a transmission shaft (10) are rotatably connected to the inner wall of the rotating groove (8). A driving gear (11) and a driven gear (12) are respectively fixedly sleeved on the surfaces of the rotating shaft (9) and the transmission shaft (10), and the driving gear (11) is meshed with the driven gear (12). The transmission shaft (10) penetrates out of the rotating groove (8) and penetrates into the lifting groove (5) and is fixedly connected to the lifting screw (7).

3. The steel box girder bridge assembly and position adjustment device according to claim 2, characterized in that: A lifting motor (13) is fixedly installed at the bottom of the lifting frame (4), and the output shaft of the lifting motor (13) is fixedly connected to the rotating shaft (9).

4. A steel box girder bridge assembly and alignment device according to claim 1, characterized in that: The shape of one side of the lifting frame (4) close to the steel box girder assembly (1) is set to be inclined.

5. The assembling and position - adjusting device for steel box girder bridges according to claim 1, wherein: A driving motor (15) is fixedly installed on the outer surface of the position-adjusting platform (2), and one end of the moving screw (14) penetrating out of the fitting groove (3) is fixedly connected to the output shaft of the driving motor (15).

6. The assembling and position - adjusting device for a steel box girder bridge according to claim 1, wherein: Limit sliding plates (19) which are fixedly installed at the top and bottom of the pushing plate (18) and slide on the surface of the U-shaped fixing frame (16) are provided, and a turntable (20) is fixedly installed at one end of the pushing screw (17) far away from the steel box girder assembly (1).

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