Steel box girder screw buckle type micro-adjustment device

Abstract

The utility model discloses a steel box girder screw buckle type micro-adjusting device which comprises a bolt rod, the bolt rod is of a double-end structure, the middle portion of the bolt rod is a smooth portion, the two ends of the bolt rod are sleeved with fastening screw buckles through thread structures, the fastening screw buckles are connected with U-shaped adjusting buckles, the two ends of the bolt rod are connected with positioning blocks, and the positioning blocks are connected with the U-shaped adjusting buckles. And the positioning blocks are respectively used for connecting the installed steel beam section and the web plates on the two sides in the box chamber of the steel beam section to be adjusted. The screw buckle type micro-adjustment device for the steel box girder can finely adjust the position of the steel box girder in the bridge direction, has the advantages of being simple in structure, low in cost and convenient to operate, effectively reduces labor intensity, improves working efficiency and improves adjustment accuracy.

Description

Technical Field

[0001] The utility model relates to the technical field of steel box girder construction, in particular to a screw-buckle type micro-adjustment device for a steel box girder. Background Art

[0002] Steel box girder is a structural form commonly used in bridge construction. It is made of steel and has the characteristics of strong bearing capacity and good durability. In bridge construction, the segmented hoisting construction of steel box girders is a key engineering link, which requires a series of technical measures and linear control technologies to ensure construction safety and quality.

[0003] At present, during the construction of steel box girders, linear adjustment operations are carried out in the form of segmented hoisting and segment-by-segment adjustment. After all the segments of a span of steel box girders are hoisted, it is necessary to adjust the vertical elevation and horizontal position of each segment. The adjustment of the horizontal position is divided into two parts: the position along the bridge and the position across the bridge. The existing horizontal position adjustment devices of steel box girders mostly use hand winches and transverse jacks. These two types of equipment not only require a lot of labor, resulting in low work efficiency, but also can only roughly adjust the position of the steel box girder along the bridge, and cannot accurately fine-tune the position of the steel box girder along the bridge, thereby failing to meet the high-precision steel box girder construction requirements. Utility Model Content

[0004] The purpose of the utility model is to provide a screw-type micro-adjustment device for a steel box girder to solve the problem raised in the above-mentioned background technology that the current horizontal position adjustment devices for steel box girders mostly use hand winches and transverse jacks, which not only requires a large amount of labor and leads to low work efficiency, but also can only roughly adjust the position of the steel box girder along the bridge, and cannot accurately fine-tune the position of the steel box girder along the bridge.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a screw-type micro-adjustment device for a steel box girder, comprising a bolt rod, the bolt rod being a double-headed structure and the middle part being a smooth part, both ends of the bolt rod being provided with fastening screws through a threaded structure, the fastening screws being connected to a U-shaped adjustment buckle, and both ends of the bolt rod being connected to a positioning block, the positioning blocks being respectively used to connect the webs on both sides of the box chamber of the installed steel beam segment and the steel beam segment to be adjusted.

[0006] Preferably, support blocks are symmetrically provided at the ends of the bolt rod, and a fixed shaft is connected between the support blocks, and a rotating sleeve sleeved on the outside of the fixed shaft is provided on one side of the positioning block connected to the bolt rod.

[0007] Preferably, the support block is provided with a screw hole, and the screw hole is connected with a locking screw through a threaded structure, and a plurality of threaded holes matching the locking screw structure are arranged around both sides of the rotating sleeve.

[0008] Preferably, fixing pins are provided on the outside of both sides of the fastening screw buckle, and one end of the U-shaped adjustment buckle connected to the fastening screw buckle is sleeved on the outside of the fixing pins through a through hole.

[0009] Preferably, the outer end of the U-shaped adjustment buckle is a curved structure, and the overall length of the U-shaped adjustment buckle is greater than half the length of one end of the bolt rod.

[0010] Preferably, the positioning block is a rectangular metal block structure, and the end face diameter of the positioning block is larger than the end face diameter of the bolt rod.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the screw-type fine-adjustment device for steel box beams can fine-tune the position of steel box beams along the bridge direction, has the advantages of simple structure, low cost, and easy operation, effectively reduces labor intensity, improves work efficiency, and improves the accuracy of adjustment. The device positions and fixes the positioning blocks provided at both ends of the bolt rod on the two force points on the webs on both sides of the box chamber of the installed steel beam segment and the steel beam segment to be adjusted. When the U-shaped adjustment buckle drives the fastening screw buckle to rotate on the outside of the bolt rod through the threaded structure, the end of the bolt rod can generate a force to slightly push the force point, so as to achieve the function of fine-tuning the position of the steel box beam along the bridge direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural schematic diagram of a screw-type micro-adjustment device for a steel box girder of the utility model;

[0013] Figure 2 The utility model is a screw-type micro-adjustment device for steel box beams. Figure 1 The enlarged structural diagram at A in the middle;

[0014] Figure 3 This is a schematic diagram of the connection structure between the positioning block and the bolt rod of the screw-type micro-adjustment device for a steel box beam of the utility model;

[0015] Figure 4 The utility model is a schematic diagram of the connection structure of the U-shaped adjustment buckle and the fastening screw buckle of the screw buckle type micro-adjustment device of the steel box beam of the utility model.

[0016] In the figure: 1. Bolt rod; 2. Fastening screw buckle; 3. U-shaped adjustment buckle; 4. Positioning block; 5. Support block; 6. Fixed shaft; 7. Rotating sleeve; 8. Screw hole; 9. Locking screw; 10. Threaded hole; 11. Fixed pin. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-4The utility model provides a technical solution: a screw-buckle type micro-adjustment device for a steel box beam, comprising a bolt rod 1, the bolt rod 1 is a double-head structure and the middle part is a smooth part, both ends of the bolt rod 1 are provided with fastening screw buckles 2 through a threaded structure, the fastening screw buckles 2 are connected with U-shaped adjustment buckles 3, and both ends of the bolt rod 1 are connected with positioning blocks 4, the positioning blocks 4 are rectangular metal block structures, and the end face diameter of the positioning blocks 4 is larger than the end face diameter of the bolt rod 1, and the positioning blocks 4 are respectively used to connect the installed steel beam segment and the webs on both sides of the box chamber of the steel beam segment to be adjusted. When the steel box beam is adjusted in the horizontal position of sections during the construction process, two force-bearing welds are firstly welded on the webs on both sides of the box chamber of the installed steel beam segment and the steel beam segment to be adjusted. The U-shaped adjusting buckle 3 drives the fastening screw buckle 2 to rotate on the outside of the bolt rod 1 through the threaded structure, and the end of the bolt rod 1 can generate a force on the force point to slightly push it, so as to quickly realize the function of fine-tuning the position of the steel box girder along the bridge direction. It not only has the advantages of simple structure, low cost and easy operation, but also effectively reduces labor intensity, improves work efficiency, and has higher adjustment accuracy, avoiding the problem that the prior art often uses hand winches and transverse jacks for adjustment, which not only consumes a lot of labor but can only roughly adjust the position of the steel box girder along the bridge direction, thereby meeting the requirements of high-precision steel box girder construction, can be widely promoted and used in this field, and the bolt The ends of the rod 1 are symmetrically welded and fixed with support blocks 5, and a fixed shaft 6 is connected between the support blocks 5. The two ends of the fixed shaft 6 are welded and fixed to the inner sides of the support blocks 5, and a rotating sleeve 7 sleeved on the outside of the fixed shaft 6 is welded and fixed on one side of the positioning block 4 connected to the bolt rod 1. The positioning block 4 of this structure can be adjusted to different connection angles by rotating the rotating sleeve 7 on the outside of the fixed shaft 6. In this way, the positioning block 4 can be more adaptably fixed on the two force-bearing points on the webs on both sides of the box of the installed steel beam segment and the steel beam segment to be adjusted, ensuring the fit during fixation, thereby improving the stability of the bolt rod 1 after installation. Screw holes 8 are provided on the support blocks 5, and locking screws 9 are inserted and connected to the screw holes 8 through a threaded structure, and a number of The threaded hole 10 that matches the locking screw 9 structure, after the rotating sleeve 7 of this structure is rotated to a suitable angle outside the fixed shaft 6, the locking screw 9 can pass through the screw hole 8 and connect with the corresponding threaded hole 10 to limit and lock the rotating sleeve 7, further ensuring the stability of the positioning block 4 when it is positioned and fixed, the outside of both sides of the fastening screw buckle 2 are provided with fixing pins 11, and the end of the U-shaped adjustment buckle 3 connected to the fastening screw buckle 2 is set on the outside of the fixing pin 11 through a perforated sleeve, the U-shaped adjustment buckle 3 of this structure can be rotated on the fastening screw buckle 2 through the fixing pin 11, which makes it more convenient for the staff to perform the adjustment operation, the outer end of the U-shaped adjustment buckle 3 is a curved structure, and the overall length of the U-shaped adjustment buckle 3 is greater than half the length of one end of the bolt rod 1,The U-shaped adjustment buckle 3 of this structure can ensure that the bolt rod 1 has sufficient space for movement when driving the fastening screw buckle 2 to rotate, so as to achieve the function of fine-tuning the position of the steel box girder along the bridge to different degrees.

[0019] Working principle: When using the screw-buckle type micro-adjustment device for steel box beams, firstly, two stress points are welded on the webs on both sides of the box chamber of the installed steel beam segment and the steel beam segment to be adjusted, and then the bolt rod 1 can be welded and fixed to the two stress points through the positioning blocks 4 at both ends. When connecting, the positioning block 4 is first rotated on the outside of the fixed shaft 6 through the rotating sleeve 7 until the positioning block 4 is adjusted to an angle that fits the stress point at the end of the bolt rod 1 and then welded and fixed. At the same time, the locking screw 9 is passed through the screw hole 8 and connected to the corresponding threaded hole 10. After the rotating sleeve 7 is locked in a limited position, the positioning block 4 will be more stable when connected. Then the operator holds the curved section at the outer end of the U-shaped adjustment buckle 3, and the U-shaped adjustment buckle 3 can be rotated on the fastening screw buckle 2 through the fixing pin 11. When the U-shaped adjustment buckle 3 drives the fastening screw buckle 2 to rotate through the threaded structure outside the bolt rod 1, the end of the bolt rod 1 can generate a force on the stress point to slightly push it, so that the position of the steel box beam along the bridge direction can be fine-tuned, thereby completing a series of work.

[0020] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A screw-type fine adjustment device for a steel box beam, comprising a bolt rod (1), wherein the bolt rod (1) is a double-headed structure and the middle portion is a smooth portion, and is characterized in that: Both ends of the bolt rod (1) are provided with fastening screw buckles (2) through a threaded structure, and the fastening screw buckles (2) are connected to U-shaped adjustment buckles (3). Both ends of the bolt rod (1) are connected to positioning blocks (4), and the positioning blocks (4) are respectively used to connect the webs on both sides of the box chamber of the installed steel beam segment and the steel beam segment to be adjusted.

2. The screw-type fine adjustment device for steel box beam according to claim 1, characterized in that: Support blocks (5) are symmetrically arranged at the ends of the bolt rod (1), and a fixed shaft (6) is connected between the support blocks (5), and a rotating sleeve (7) sleeved on the outside of the fixed shaft (6) is provided on the side where the positioning block (4) is connected to the bolt rod (1).

3. The screw-type fine adjustment device for steel box beam according to claim 2, characterized in that: The support block (5) is provided with a screw hole (8), and the screw hole (8) is connected with a locking screw (9) through a threaded structure, and a plurality of threaded holes (10) that match the structure of the locking screw (9) are arranged around both sides of the rotating sleeve (7).

4. The screw-type fine adjustment device for steel box beam according to claim 1, characterized in that: The outsides of both sides of the fastening screw buckle (2) are provided with fixing pins (11), and one end of the U-shaped adjustment buckle (3) connected to the fastening screw buckle (2) is sleeved on the outside of the fixing pin (11) through a perforated hole.

5. The screw-type fine adjustment device for steel box beam according to claim 1, characterized in that: The outer end of the U-shaped adjustment buckle (3) is a curved structure, and the overall length of the U-shaped adjustment buckle (3) is greater than half the length of one end of the bolt rod (1).

6. The screw-type fine adjustment device for steel box beam according to claim 1, characterized in that: The positioning block (4) is a rectangular metal block structure, and the end face diameter of the positioning block (4) is larger than the end face diameter of the bolt rod (1).

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