Steel box girder top plate abutted seam fine adjustment device

Abstract

The invention discloses a steel box girder top plate abutted seam fine adjustment device, which belongs to the technical field of steel box girder top plates, and comprises a longitudinal adjustment mechanism arranged on one steel box girder top plate and used for driving the other steel box girder top plate to move along the vertical direction; the transverse adjusting mechanism is connected with one steel box girder top plate and used for driving the other steel box girder top plate to move in the horizontal direction; the connecting piece is detachably connected with the longitudinal adjusting mechanism; according to the scheme, the steel box girder top plate can be moved to the position flush with the height of the installed steel box girder top plate by operating the longitudinal adjusting mechanism, and the stability of height adjustment of the steel box girder top plate is higher; then the to-be-mounted steel box girder top plates can move in the horizontal direction through the transverse adjusting mechanism, namely, the splicing gap distance between the two steel box girder top plates can be adjusted according to specific requirements, repeated adjustment through a crane is avoided, the construction efficiency is high, deviation is greatly prevented, the splicing gap adjusting precision is high, and the follow-up splicing gap welding quality is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of steel box girder top plates, and more particularly to a device for fine-tuning the joints of steel box girder top plates. Background Art

[0002] A steel box girder is a box-section beam structure made of welded or riveted steel plates. It is a widely used structural form in bridge engineering, offering advantages such as high strength, light weight, and rapid construction. The top plate of the steel box girder primarily transfers and distributes the bridge deck load.

[0003] The finished steel box girder is often covered with numerous pins (also known as studs or shear pins). These pins are used primarily to enhance the performance of the composite structure, particularly when forming the composite beam between the steel box girder and the concrete deck. They also enhance the structural integrity and help distribute loads.

[0004] The bridge deck pavement is usually laid on the steel box girder top plate, so the steel box girder top plate needs to have good flatness and welding quality. When splicing and installing between the steel box girder top plates, the steel box girder top plate is generally lifted by a crane to align it with the installed steel box girder top plate and form a certain gap for subsequent welding and other operations. However, during the installation and splicing process, the steel box girder top plate needs to be lifted by a crane to the pier. The joint between it and the installed steel box girder top plate is not precise enough and requires multiple lifting and adjustments. This adjustment process takes a lot of time and has low construction efficiency. In addition, the adjustment effect of the joint spacing is not good, and it is easy to have a lot of joint deviations. In addition, the welding is not stable enough, which will affect the subsequent joint welding quality and the construction effect is poor.

[0005] Therefore, it is necessary to provide a steel box girder top plate joint fine-tuning device to solve the above technical problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a steel box girder top plate joint fine adjustment device to solve the above technical problems.

[0007] To achieve the above object, the present invention adopts the following technical solutions: A device for fine-tuning the joints of a steel box girder top plate is used to adjust the relative positions of two steel box girder top plates, wherein the steel box girder top plates are provided with a plurality of pins, comprising: A longitudinal adjustment mechanism is provided on the top plate of one of the steel box beams and is used to drive the top plate of the other steel box beam to move in the vertical direction; A horizontal adjustment mechanism is connected to one of the steel box girder top plates and is used to drive the other steel box girder top plate to move in a horizontal direction; A connecting piece is detachably connected to the longitudinal adjustment mechanism and is used to limit and fix the pin.

[0008] Furthermore, the longitudinal adjustment mechanism includes: A steel buttress is provided on one of the steel box girder top plates, and a steel crossbeam is provided on the upper end of the steel buttress; The first threaded steel bar and the second threaded steel bar are both arranged on the steel beam. The second threaded steel bar is provided with an adjustment component. The adjustment component and the first threaded steel bar are both connected to the pin through the connecting piece.

[0009] Furthermore, the adjustment component includes: a sleeve, one end of which is threadedly connected to the second threaded steel bar, and the other end of which is threadedly connected to the third threaded steel bar, and the other end of the third threaded steel bar is connected to the connecting piece; The sleeve is provided with a plug hole.

[0010] Furthermore, the connecting piece includes: A steel cylinder having screw holes adapted to the first threaded steel bar and the third threaded steel bar; A limiting notch is provided on the steel cylinder for accommodating the end of the pin, and an avoidance groove communicating with the limiting notch is provided at the bottom of the steel cylinder.

[0011] Furthermore, an arc-shaped inner cavity is opened in the steel cylinder, and an arc-shaped blocking piece is slidably connected to the inner wall of the arc-shaped inner cavity.

[0012] Furthermore, a shift groove communicating with the arc-shaped inner cavity is formed on the outer wall of the steel cylinder, and a push rod connected to the arc-shaped baffle is slidably connected to the inner wall of the shift groove.

[0013] Furthermore, a support plate is provided on the outer wall of the steel cylinder, a limiting plate is rotatably provided on the support plate, a fastening bolt is provided on the limiting plate, and a limiting hole adapted to the fastening bolt is opened on the push rod.

[0014] Furthermore, the horizontal adjustment mechanism includes: A plurality of double-jointed channel steels are respectively arranged on the plurality of pins of the two steel box girder top plates, a plurality of fourth threaded steels are passed through the plurality of double-jointed channel steels, and nuts are threadedly connected to the fourth threaded steels at positions corresponding to the double-jointed channel steels; A screw jack is connected to one end of the fourth threaded steel bar.

[0015] Furthermore, it also includes: A transverse baffle is connected to one of the steel box girder top plates, and a vertical baffle and an adjustable baffle are provided at the bottom of the transverse baffle.

[0016] Furthermore, a positioning block connected to the adjustable baffle is slidably provided on the upper end of the transverse baffle, a plurality of positioning holes are opened on the transverse baffle, and positioning bolts adapted to the positioning holes are threadedly connected to the positioning block.

[0017] Compared with the prior art, the present invention has the following beneficial effects: This solution installs a longitudinal adjustment mechanism on the top plate of the already installed steel box girder. The longitudinal adjustment mechanism is respectively connected to the two steel box girder top plates through connectors. The longitudinal adjustment mechanism can be operated to drive the top plate of the steel box girder to be installed to move in the vertical direction, and finally the top plate of the steel box girder is moved to a position where it is flush with the top plate of the already installed steel box girder. The adjustment process is more stable, which greatly prevents the top plate of the steel box girder from shaking, and the stability of the height adjustment of the top plate of the steel box girder is higher. Then the transverse adjustment mechanism is connected to the two steel box girder top plates respectively. The transverse adjustment mechanism can make the steel box girder top plate to be installed move in the horizontal direction, that is, the distance between the steel box girder top plate to be installed and the installed steel box girder top plate can be adjusted, that is, the joint spacing between the two steel box girder top plates can be adjusted according to specific needs. The joint adjustment process is faster and simpler, and repeated adjustments using a crane are avoided, which can save a lot of time, significantly improve construction efficiency, and reduce costs and risks. It also greatly prevents deviations, and the joint adjustment is highly accurate, which improves the quality of subsequent joint welding, has a good construction effect, and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the longitudinal adjustment mechanism of the present invention when adjusting the height of the top plate of the steel box beam; Figure 2 A schematic diagram of the local structure of the adjustment component of the present invention; Figure 3 Schematic diagram of the overall structure of the connector of the present invention; Figure 4 for Figure 3 A in the figure shows the enlarged structural diagram; Figure 5 It is a schematic structural diagram of the connecting piece of the present invention from a bottom perspective; Figure 6 This is a schematic structural diagram of the connector of the present invention before connection with the arc-shaped baffle opened; Figure 7 This is a schematic diagram of the structure of the top plate of the steel box beam when the horizontal adjustment mechanism of the present invention is in use; Figure 8 for Figure 7 Schematic diagram of the structure in the front view state; Figure 9 for Figure 8 A schematic diagram of the structure at point B in FIG. Figure 10 It is a schematic diagram of the three-dimensional structure of each structure on the transverse baffle of the present invention.

[0019] Description of the numbers in the figure: 1. Steel box girder top plate; 2. Pins; 3. Longitudinal adjustment mechanism; 31. Steel pier; 32. Steel crossbeam; 33. First threaded steel bar; 34. Second threaded steel bar; 35. Adjustment assembly; 351. Sleeve; 352. Third threaded steel bar; 353. Jack; 4. Horizontal adjustment mechanism; 41. Double channel steel; 42. Fourth threaded steel bar; 43. Nut; 44. Screw jack; 5. Connector; 51. Steel cylinder; 5 2. Screw hole; 53. Limiting notch; 54. Avoidance groove; 6. Arc-shaped baffle; 7. Shifting groove; 8. Push rod; 9. Support plate; 10. Limiting plate; 11. Fastening bolt; 12. Limiting hole; 13. Horizontal baffle; 14. Vertical baffle; 15. Adjustable baffle; 16. Positioning block; 17. Positioning hole; 18. Positioning bolt; 19. Slide; 20. Slider; 21. Retaining ring; 22. Slot; 23. Steel pipe. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1-10 A device for fine-tuning the joints of a steel box girder top plate is used to adjust the relative positions of two steel box girder top plates 1, wherein a plurality of pins 2 are provided on the steel box girder top plates 1, comprising: A longitudinal adjustment mechanism 3 is provided on one of the steel box girder top plates 1 and is used to drive the other steel box girder top plate 1 to move in the vertical direction; The horizontal adjustment mechanism 4 is connected to one of the steel box girder top plates 1 and is used to drive the other steel box girder top plate 1 to move in the horizontal direction; The connecting member 5 is detachably connected to the longitudinal adjustment mechanism 3 and is used to limit and fix the pin 2.

[0022] The installed steel box girder top plate 1 is installed on the pier. Figure 1 The steel box girder top plate 1 on the right side is then hoisted onto the temporary pier. At this time, the position of the hoisted steel box girder top plate 1 and the installed steel box girder top plate 1 on the right side is not accurate enough and needs to be fine-tuned.

[0023] Then, the longitudinal adjustment mechanism 3 is first installed on the installed steel box girder top plate 1. The longitudinal adjustment mechanism 3 is respectively connected to the two steel box girder top plates 1 through the connecting parts 5. Then, the steel box girder top plate 1 to be installed can be driven to move in the vertical direction by operating the longitudinal adjustment mechanism 3, and finally the steel box girder top plate 1 is moved to a position where it is flush with the installed steel box girder top plate 1 in height, that is, the two steel box girder top plates 1 are horizontally aligned, the adjustment process is more stable, and the shaking of the steel box girder top plate 1 is greatly prevented, and the stability of the height adjustment of the steel box girder top plate 1 is higher. At this time, the steel box girder top plate 1 has a margin for horizontal displacement.

[0024] Then the transverse adjustment mechanism 4 is connected to the two steel box girder top plates 1 respectively. The transverse adjustment mechanism 4 can make the steel box girder top plate 1 to be installed move in the horizontal direction, that is, the distance between the steel box girder top plate 1 to be installed and the installed steel box girder top plate 1 can be adjusted until the required spacing is reached, that is, the joint spacing between the two steel box girder top plates 1 can be adjusted according to specific needs. The joint adjustment process is faster and simpler, and the use of crane adjustment is avoided, which can save a lot of time, significantly improve construction efficiency, and reduce costs and risks. In addition, the joint spacing adjustment effect is good, which greatly prevents deviations, and the joint adjustment has high accuracy, which improves the quality of subsequent joint welding. The construction effect is good, it has high practicality, and can be widely promoted and used.

[0025] After the operation is completed, the connection between the connector 5 and the pin 2 on the steel box girder top plate 1 can be released, and the limit of the longitudinal adjustment mechanism 3 can be released, so that the longitudinal adjustment mechanism 3 can proceed to the next joint adjustment construction.

[0026] Preferably, see Figure 1-2 , the longitudinal adjustment mechanism 3 includes: A steel buttress 31 is provided on one of the steel box girder top plates 1, and a steel crossbeam 32 is provided at the upper end of the steel buttress 31; The first threaded steel bar 33 and the second threaded steel bar 34 are both arranged on the steel beam 32. The second threaded steel bar 34 is provided with an adjustment component 35. The adjustment component 35 and the first threaded steel bar 33 are both connected to the pin 2 through the connecting piece 5, and the second threaded steel bar 34 is equivalent to being hung on the steel beam 32 through a nut.

[0027] Specifically, after the steel pier 31 is installed on the installed steel box girder top plate 1 on the right side, the first threaded steel bar 33 and the second threaded steel bar 34 are respectively installed on both sides of the steel box girder top plate 1, and the bottom of the first threaded steel bar 33 is connected to the pin 2 of the right steel box girder top plate 1 through the connecting piece 5, and the second threaded steel bar 34 is connected to the pin 2 of the left steel box girder top plate 1 through the adjustment component 35. Then, by operating the adjustment component 35, the left steel box girder top plate 1 can be driven to move in the vertical direction, and the height of the left steel box girder top plate 1 can be adjusted to be consistent with the height of the right steel box girder top plate 1, achieving a flush effect.

[0028] There is no complete restriction between the connecting member 5 and the pin 2 in the horizontal direction, that is, there is a margin for horizontal movement of the steel box girder top plate 1 and the pin 2 along the connecting member 5 .

[0029] Since it is a fine adjustment, the distance that the adjustment component 35 actually drives the left steel box girder top plate 1 to move vertically is very small, so it is relatively convenient and fast to implement.

[0030] Preferably, see Figure 1-2 , the adjustment component 35 includes: The sleeve 351 has one end threadedly connected to the second threaded steel bar 34 and the other end threadedly connected to the third threaded steel bar 352. The other end of the third threaded steel bar 352 is connected to the connector 5. The sleeve 351 is provided with an insertion hole 353 , and the sleeve 351 can be rotated by inserting the steel pipe 23 into the insertion hole 353 .

[0031] Specifically, the sleeve 351 can be rotated by inserting the steel pipe 23 into the socket 353. Since the upper end of the second threaded steel 34 is connected to the steel beam 32, the two ends of the sleeve 351 are threadedly connected to the second threaded steel 34 and the third threaded steel 352 respectively. The rotation of the sleeve 351 will drive the third threaded steel 352 to move up or down, and the third threaded steel 352 will drive the pin 2 and the left steel box beam top plate 1 to move up or down through the connecting piece 5 to adjust the height.

[0032] In this embodiment, preferably, please refer to Figure 1 and Figure 3-6 , the connecting member 5 includes: The steel cylinder 51 is provided with screw holes 52 adapted to the first threaded steel 33 and the third threaded steel 352; A limiting notch 53 is provided on the steel cylinder 51 for receiving the end of the pin 2 . A relief groove 54 communicating with the limiting notch 53 is provided at the bottom of the steel cylinder 51 .

[0033] Specifically, the limiting notch 53 of the steel cylinder 51 is aligned with the head of the pin 2, so that the head of the pin 2 finally enters the limiting notch 53, that is, the steel cylinder 51 is sheathed around the head of the pin 2. At this time, the pin 2 has room to move horizontally within the limiting notch 53 of the steel cylinder 51. Then, the bottom ends of the first threaded steel 33 and the third threaded steel 352 are connected to the screw holes 52 of the steel cylinder 51, so that the first threaded steel 33 and the third threaded steel 352 are connected to the pin 2 through the steel cylinder 51. The connection of the connecting member 5 with the pin 2 is simpler and more convenient, thereby improving the connection efficiency and the use effect.

[0034] In this embodiment, preferably, please refer to Figure 3-6 An arc-shaped inner cavity is provided in the steel cylinder 51, and an arc-shaped baffle 6 is slidably connected to the inner wall of the arc-shaped inner cavity.

[0035] With this design, the arc-shaped blocking piece 6 is first moved upward to open the limiting notch 53, and then the head of the pin 2 is covered by the limiting notch 53 of the steel cylinder 51, and then the arc-shaped blocking piece 6 is lowered. The arc-shaped blocking piece 6 can block the outer side of the head of the pin 2, thereby playing a protective blocking role, effectively preventing the pin 2 from escaping from the limiting notch 53 of the steel cylinder 51, and improving the connection protection effect of the pin 2.

[0036] Furthermore, a snap ring 21 is provided at the bottom of the arc-shaped baffle 6, and a groove 22 is formed in the bottom wall of the limiting notch 53 to fit with the snap ring 21. This design allows the snap ring 21 of the arc-shaped baffle 6 to fall into the groove 22 of the limiting notch 53 when the arc-shaped baffle 6 falls, thereby increasing the lateral blocking strength of the arc-shaped baffle 6 and thus enhancing the protective effect.

[0037] In this embodiment, preferably, please refer to Figure 3-6 The outer wall of the steel cylinder 51 is provided with a shift groove 7 communicating with the arc-shaped inner cavity, and the inner wall of the shift groove 7 is slidably connected with a push rod 8 connected to the arc-shaped baffle 6.

[0038] With this design, the push rod 8 can be pushed to move along the shifting groove 7, and the push rod 8 will drive the arc-shaped blocking piece 6 to move, so that the arc-shaped blocking piece 6 can be moved more conveniently and simply, which is worry-free and convenient.

[0039] In this embodiment, preferably, please refer to Figure 3-6 The outer wall of the steel cylinder 51 is provided with a support plate 9, a limiting plate 10 is rotatably provided on the support plate 9, a fastening bolt 11 is provided on the limiting plate 10, and a limiting hole 12 adapted to the fastening bolt 11 is opened on the push rod 8.

[0040] With this design, when the push rod 8 drives the arc-shaped baffle 6 to move, the limiting plate 10 is rotated to one side, that is, the limiting plate 10 does not interfere with the movement of the push rod 8 along the shifting groove 7. After the push rod 8 drives the arc-shaped baffle 6 to move downward to block the head of the pin 2, the limiting plate 10 can be rotated to be above the push rod 8, and then the fastening bolt 11 is rotated to enter the limiting hole 12 of the push rod 8. At this time, the push rod 8 can be restricted and fixed, that is, the arc-shaped baffle 6 is restricted, which can prevent the arc-shaped baffle 6 from shaking during use, making the protective stability of the arc-shaped baffle 6 higher.

[0041] Preferably, see Figure 7-9 , the horizontal adjustment mechanism 4 includes: A plurality of double-jointed channel steels 41 are respectively arranged on a plurality of pins 2 of the two steel box girder top plates 1. A plurality of fourth threaded steels 42 are passed through the plurality of double-jointed channel steels 41. Nuts 43 are threadedly connected to the fourth threaded steels 42 at the corresponding positions of the double-jointed channel steels 41. The screw jack 44 is connected to one end of the fourth threaded steel bar 42 .

[0042] Specifically, after adjusting the height of the steel box girder top plate 1 on the left, fix the double-jointed channel steels 41 on the several groups of pins 2 of the two steel box girder top plates 1, and then pass a plurality of fourth threaded steel bars 42 between the multiple groups of double-jointed channel steels 41 of the two steel box girder top plates 1, and thread a plurality of nuts 43 on the fourth threaded steel bars 42, and each nut 43 is at the position of each corresponding double-jointed channel steel 41, and rotate the nut 43 to make it rest against one side of the double-jointed channel steel 41, so that the fourth threaded steel 42 is fixed to the double-jointed channel steel 41 through the cooperation of the nut 43 and the double-jointed channel steel 41. The pin 2 is connected, and then connected to the right end of the fourth threaded steel bar 42 through the screw jack 44. Starting the screw jack 44 drives the fourth threaded steel bar 42 to move horizontally. At this time, the fourth threaded steel bar 42 will drive the left steel box girder top plate 1 to move left or right, that is, the joint spacing between the left steel box girder top plate 1 and the right steel box girder top plate 1 can be adjusted. At this time, the displacement distance is small, which belongs to fine adjustment, and the left steel box girder top plate 1 can be adjusted to the appropriate position so that the joint reaches the required distance, which is convenient for subsequent welding and installation.

[0043] When the fourth threaded steel bar 42 is moved and adjusted to a suitable position by the screw jack 44, the nut 43 can be rotated to make it press against the double-jointed channel steel 41, thereby improving the stability of the two steel box girder top plates 1 and preventing shaking and deviation.

[0044] In this embodiment, preferably, please refer to Figure 7-10 , also includes: The transverse baffle 13 is connected to one of the steel box girder top plates 1 , and a vertical baffle 14 and an adjustable baffle 15 are provided at the bottom of the transverse baffle 13 .

[0045] Specifically, when adjusting the vertical and horizontal positions of the left steel box girder top plate 1 to be installed, the cross baffle 13 can be installed on the right steel box girder top plate 1 first, and the vertical baffle 14 can be close to the end of the right steel box girder top plate 1. At this time, the overall thickness formed by the vertical baffle 14 and the adjustable baffle 15 is the joint spacing. Then, when adjusting the height of the left steel box girder top plate 1, when the top of the steel box girder top plate 1 contacts the cross baffle 13, it can no longer move up. At this time, the left steel box girder top plate 1 is aligned with the right steel box girder top plate 1 in height, and no manual measurement is required. After that, when adjusting the horizontal position of the left steel box girder top plate 1, when the end of the left steel box girder top plate 1 contacts the adjustable baffle 15, it will be blocked. The joint between the two steel box girder top plates 1 has reached the required spacing, and no manual measurement is required, which reduces tedious steps, saves time and improves efficiency. At the same time, the adjustment accuracy is also higher, and the use effect is good.

[0046] In this embodiment, preferably, please refer to Figure 9-10 The upper end of the transverse baffle 13 is slidably provided with a positioning block 16 connected to the adjustable baffle 15. A plurality of positioning holes 17 are opened on the transverse baffle 13. The positioning block 16 is threadedly connected with a positioning bolt 18 adapted to the positioning hole 17.

[0047] With this design, loosening the positioning bolts 18 to disengage them from the positioning holes 17 can drive the positioning block 16 and the adjustable baffle 15 to move, thereby changing the distance between the adjustable baffle 15 and the vertical baffle 14. In other words, the overall thickness of the adjustable baffle 15 and the vertical baffle 14 can be adjusted according to different joint spacing requirements, meeting various needs and providing high flexibility. After adjustment, the positioning bolts 18 are then tightened to engage the corresponding positioning holes 17 to secure the positioning block 16 and the adjustable baffle 15.

[0048] Furthermore, a slide groove 19 is formed on the upper wall of the transverse baffle 13, and a slider 20 connected to the positioning block 16 is slidably disposed in the slide groove 19. When the positioning block 16 and the adjustable baffle 15 move, the positioning block 16 drives the slider 20 to slide along the slide groove 19, thereby improving the stability and smoothness of the movement of the positioning block 16 and the adjustable baffle 15.

[0049] It should be understood that the examples and implementation methods described herein are for illustrative purposes only and are not intended to limit the present invention. Those skilled in the art may make various modifications or changes based on them. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0050] It should be noted that if the embodiments of the present invention involve directional indications such as up, down, left, right, front, back, etc., then the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0051] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or schemes in which A and B are satisfied at the same time. In addition, "multiple" refers to more than two. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A device for fine-tuning the joint of a steel box girder top plate, used for adjusting the relative position of two steel box girder top plates (1), wherein a plurality of pins (2) are provided on the steel box girder top plates (1), characterized in that: include: A longitudinal adjustment mechanism (3) is provided on one of the steel box girder top plates (1) and is used to drive the other steel box girder top plate (1) to move in a vertical direction; A horizontal adjustment mechanism (4) is connected to one of the steel box girder top plates (1) and is used to drive the other steel box girder top plate (1) to move in a horizontal direction; A connecting piece (5) is detachably connected to the longitudinal adjustment mechanism (3) and is used to limit and fix the pin (2).

2. The device for fine-tuning the joints of the top plate of a steel box beam according to claim 1, characterized in that: The longitudinal adjustment mechanism (3) comprises: A steel buttress (31) is provided on one of the steel box girder top plates (1), and a steel crossbeam (32) is provided at the upper end of the steel buttress (31); The first threaded steel bar (33) and the second threaded steel bar (34) are both arranged on the steel beam (32); the second threaded steel bar (34) is provided with an adjustment assembly (35); and the adjustment assembly (35) and the first threaded steel bar (33) are both connected to the pin (2) via the connecting piece (5).

3. The device for fine-tuning the joints of the top plate of a steel box beam according to claim 2, characterized in that: The adjustment component (35) includes: A sleeve (351), one end of which is threadedly connected to the second threaded steel (34), and the other end of which is threadedly connected to the third threaded steel (352), and the other end of the third threaded steel (352) is connected to the connecting member (5); The sleeve (351) is provided with a socket (353).

4. The device for fine-tuning the joints of the top plate of a steel box beam according to claim 3, characterized in that: The connecting member (5) comprises: A steel cylinder (51) having screw holes (52) adapted to the first threaded steel (33) and the third threaded steel (352); A limiting notch (53) is provided on the steel cylinder (51) for accommodating the end of the pin (2). A relief groove (54) communicating with the limiting notch (53) is provided at the bottom of the steel cylinder (51).

5. The device for fine-tuning the joints of the top plate of a steel box beam according to claim 4, characterized in that: An arc-shaped inner cavity is provided in the steel cylinder (51), and an arc-shaped blocking piece (6) is slidably connected to the inner wall of the arc-shaped inner cavity.

6. The device for fine-tuning the joints of the top plate of a steel box beam according to claim 5, characterized in that: The outer wall of the steel cylinder (51) is provided with a shift groove (7) communicating with the arc-shaped inner cavity, and the inner wall of the shift groove (7) is slidably connected to a push rod (8) connected to the arc-shaped blocking piece (6).

7. The device for fine-tuning the joints of the top plate of a steel box beam according to claim 6, characterized in that: The outer wall of the steel cylinder (51) is provided with a support plate (9), a limiting plate (10) is rotatably provided on the support plate (9), a fastening bolt (11) is provided on the limiting plate (10), and a limiting hole (12) adapted to the fastening bolt (11) is opened on the push rod (8).

8. The device for fine-tuning the joints of the top plate of a steel box beam according to claim 1, characterized in that: The horizontal adjustment mechanism (4) comprises: A plurality of double-jointed channel steels (41) are respectively arranged on the plurality of pins (2) of the two steel box girder top plates (1); a plurality of fourth threaded steels (42) are passed through between the plurality of double-jointed channel steels (41); and nuts (43) are threadedly connected to the fourth threaded steels (42) at positions corresponding to the double-jointed channel steels (41); A screw jack (44) is connected to one end of the fourth threaded steel bar (42).

9. The device for fine-tuning the joints of the top plate of a steel box beam according to claim 1, characterized in that: Also includes: A transverse baffle (13) is connected to one of the steel box girder top plates (1), and a vertical baffle (14) and an adjustable baffle (15) are provided at the bottom of the transverse baffle (13).

10. The device for fine-tuning the joints of the top plate of a steel box beam according to claim 9, characterized in that: A positioning block (16) connected to the adjustable baffle (15) is slidably provided at the upper end of the transverse baffle (13), and a plurality of positioning holes (17) are provided on the transverse baffle (13). Positioning bolts (18) adapted to the positioning holes (17) are threadedly connected to the positioning block (16).

Images