Flatness fine adjustment device for butt joint adjustment of steel box girder units

Abstract

The utility model provides a flatness fine adjustment device for butt joint adjustment of steel box girder units, and belongs to the technical field of welding adjustment tools. The flatness fine adjustment device comprises a fixed base plate, a special-shaped supporting plate, a sleeve and an adjusting supporting rod, the fixed base plate is welded and fixed to the lower steel plate of the steel plate I and the steel plate II, needing flatness adjustment, of the two adjacent steel box girder units, and the special-shaped supporting plate is perpendicularly welded to the fixed base plate. The side face of the upper portion of the special-shaped supporting plate is fixedly connected with a sleeve, and an adjusting supporting rod is screwed in the sleeve in a threaded mode and presses the steel plate on the higher side by rotating and moving downwards. According to the utility model, the levelness of the plate surfaces between the adjacent steel box girder section units can be efficiently, safely and quickly adjusted, the height difference of the two adjacent plate surfaces can be controlled within a required range, the overall mounting precision of the steel box girder is effectively improved, and a powerful guarantee is provided for the stability and safety of a bridge structure.

Description

Technical Field

[0001] This utility model belongs to the field of welding adjustment tooling technology, specifically relating to a flatness fine-tuning device for adjusting the docking of steel box girder units. Background Technology

[0002] Steel box girders are a common structural form in bridge engineering. Due to their high strength, lightweight, and ease of construction, they are widely used in modern bridge construction. Segmented manufacturing is a common practice in the production of steel box girders. After manufacturing, these segments are transported to the construction site for assembly and welding. The precision of segmental assembly is crucial to the overall structural stability and safety of the bridge, directly affecting the overall construction efficiency and quality of the bridge.

[0003] In the current field of steel box girder construction, steel box girders have relatively large cross-sections, making them prone to deformation during transportation or hoisting, leading to inconsistencies in the height of the box girder unit cross-sections. During steel box girder installation, adjustments to the planar position, flatness of the box girder units, and beam spacing are required after hoisting. For flatness adjustment of steel box girder units, on-site methods typically employ wedges, jacks, and steel pipe struts to attempt leveling, but these methods are difficult to implement continuously and precisely, and are cumbersome and inefficient. Therefore, a new flatness fine-tuning device is urgently needed to solve these problems. Utility Model Content

[0004] The technical problem solved by this utility model is to provide a flatness fine-tuning device for adjusting the docking of steel box girder units. The purpose of this utility model is to design a device suitable for adjusting the flatness of steel box girder units during the construction process, so as to achieve continuous and precise flatness adjustment, which is convenient to operate and highly efficient.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A flatness fine-tuning device for adjusting the docking of steel box girder units includes a fixed base plate, a shaped support plate, a sleeve, and an adjusting support rod. The fixed base plate is welded and fixed to the lower side of steel plate I and steel plate II in two adjacent steel box girder units where flatness adjustment is required. The shaped support plate is vertically welded to the fixed base plate. The sleeve is fixedly connected to the upper side of the shaped support plate. The adjusting support rod is threaded into the sleeve. The adjusting support rod presses down the higher side steel plate by rotating and moving downward.

[0007] Further specifying the above solution, the fixed base plate is made of steel plate, and the irregular support plate is also made of steel plate.

[0008] Further defining the above scheme, the irregular support plate is an inverted L-shaped structure made from a single piece of sheet material.

[0009] Further defining the above scheme, the irregular support plate is composed of an inverted L-shaped support plate body and an extension plate. The extension plate is provided with an oblong hole at the connection between it and the support plate body. A circular connecting hole is provided at a corresponding position on the support plate body. The oblong hole and the circular connecting hole are connected by a bolt connection assembly.

[0010] Further defining the above solution, the upper end of the sleeve is coaxially provided with an annular top plate, and the upper side of the irregular support plate is flush with the lower surface of the annular top plate and then fixedly connected to the sleeve after being pressed together.

[0011] As a further limitation of the above scheme, the irregular support plate is provided with circular holes to facilitate the movement of the device.

[0012] Further defining the above solution, the adjusting support rod is made of round steel; the sleeve has an internal thread, and the adjusting support rod has an external thread in the middle that matches the internal thread of the sleeve.

[0013] As a further limitation of the above scheme, the lower end of the adjusting support rod is a conical downward pressing tip.

[0014] As a further limitation of the above scheme, the upper end of the adjusting support rod is provided with a conical ring handle.

[0015] As a further limitation of the above scheme, a locking nut is screwed onto the thread of the adjusting support rod located on the upper part of the sleeve.

[0016] Advantages of this utility model compared to the prior art:

[0017] 1. The flatness fine-tuning device for the steel box girder unit docking in this scheme can achieve continuous and precise adjustment of the flatness of the high and low surfaces of adjacent steel box girder units. It can control the flatness error of the high and low surfaces of adjacent steel box girder units within the required range, effectively improving the overall accuracy of steel box girder installation and providing strong protection for the stability and safety of bridge structure.

[0018] 2. The flatness adjustment device for the steel box girder segment unit in this solution is simple and convenient to operate. The flatness can be adjusted by rotating the support rod, eliminating the need for frequent replacement of adjustment parts, which greatly shortens the adjustment time, improves construction efficiency, and speeds up the project progress.

[0019] 3. The flatness adjustment device for the steel box girder segment in this scheme has a simple structure, mainly composed of common steel plates, lead screws, and sleeves. The material cost is low, and the manufacturing process is relatively simple. At the same time, due to the improved construction efficiency, it reduces labor costs and equipment rental time, resulting in significant economic benefits. Attached Figure Description

[0020] Figure 1 This is a structural diagram of the flatness fine-tuning device used for adjusting the docking of steel box girder units in this utility model;

[0021] Figure 2 This is a three-dimensional structural diagram of the flatness fine-tuning device used for adjusting the docking of steel box girder units in this utility model;

[0022] Figure 3 This is a schematic diagram of the irregular support plate in this utility model;

[0023] Figure 4 This is a schematic diagram of the sleeve structure in this utility model;

[0024] Figure 5 This is a cross-sectional view of the sleeve in this utility model;

[0025] Figure 6 This is a schematic diagram of the structure of the adjusting support rod in this utility model;

[0026] Figure 7 This is a diagram showing the usage state of this utility model. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0028] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0030] Please see Figure 1-7 The embodiments of this utility model are described in detail below.

[0031] Example: A flatness fine-tuning device for adjusting the docking of steel box girder units, see reference. Figure 1-2 As shown, the flatness fine-tuning device includes a fixed base plate 1, a shaped support plate 2, a sleeve 3, and an adjusting support rod 5. The fixed base plate 1 is welded and fixed to the lower side of the steel plate I7 ​​and steel plate II8 in two adjacent steel box girder units that need to adjust their flatness. The shaped support plate 2 is vertically welded to the fixed base plate 1. The sleeve 3 is fixedly connected to the upper side of the shaped support plate 2. The adjusting support rod 5 is threaded into the sleeve 3. The adjusting support rod 5 presses down the higher side of the steel plate by rotating and moving downward.

[0032] This device can achieve continuous and precise flatness adjustment, and is easy to operate and highly efficient.

[0033] One embodiment of the irregular support plate: See Figure 2 As shown, the irregular support plate 2 is an inverted L-shaped structure made from a single piece of sheet material.

[0034] The irregular support plate described above has a simple structure and is easy to manufacture.

[0035] Another implementation of the irregularly shaped support plate: See Figure 3 As shown, the irregular support plate 2 is composed of an inverted L-shaped support plate body 2-1 and an extension plate 2-2. The extension plate 2-2 is provided with a waist-shaped hole 2-3 at the connection between it and the support plate body 2-1. A circular connecting hole is provided at the corresponding position on the support plate body 2-1. The waist-shaped hole 2-3 and the circular connecting hole are connected by a bolt connection assembly 2-4.

[0036] The irregular support plate in the above embodiment can be extended and adjusted to facilitate adjustment of the pressure application point position.

[0037] In one specific implementation: See Figure 4-5As shown, the upper end of the sleeve 3 is coaxially provided with an annular top plate 4, and the upper side of the irregular support plate 2 is flush with the lower surface of the annular top plate 4 and then fixedly connected to the sleeve 3.

[0038] The above structure facilitates the connection, positioning, and fixation of the sleeve and the irregular support plate, and is easy and reliable to process.

[0039] In one specific embodiment: the irregular support plate 2 is provided with round holes 2-5 to facilitate the movement of the device, making it easy to pick up and transfer the entire device.

[0040] In one specific embodiment: the sleeve 3 has an internal thread 3-1 inside, and the adjusting support rod 5 has an external thread 5-1 in the middle that matches the internal thread 3-1 of the sleeve 3.

[0041] In one specific implementation: See Figure 6 As shown, the lower end of the adjusting support rod 5 is a conical pressing tip 5-2, which ensures that the pressure is concentrated at the pressing point and improves the pressure intensity.

[0042] In one specific implementation: See Figure 6 As shown, the upper end of the adjusting support rod 5 is provided with a conical ring handle 5-3. The adjusting support rod can be rotated by the handle to facilitate the operation of adjusting the support rod.

[0043] In one specific embodiment: a locking nut 6 is screwed onto the thread of the adjusting support rod 5 located on the upper part of the sleeve 3, which is used to lock the adjusting support rod after it is pressed down and positioned to prevent it from loosening.

[0044] Preferably, the fixed base plate 1 is made of steel plate, and the irregularly shaped support plate 2 is also made of steel plate; the adjusting support rod 5 is made of round steel. This device is mainly composed of common materials such as steel plates, lead screws, and sleeves, resulting in low material costs and a relatively simple manufacturing process. Furthermore, the improved construction efficiency reduces labor costs and equipment rental time, leading to significant economic benefits.

[0045] Instructions for using the flatness fine-tuning device for the joint of the steel box girder unit: See [link / reference] Figure 7As shown, the steel box girder unit docking flatness fine-tuning device is pre-assembled. For areas where the height of adjacent steel box girder units is inconsistent and adjustment is needed, the fixed base plate 1 is directly fixed to the lower beam plate at the point where the height difference needs adjustment, ensuring that the sleeve 3 is positioned above the higher plate. Then, the adjusting support rod 5 is screwed through the sleeve 3. When adjusting the flatness of the different surfaces, the adjusting support rod 5 is rotated, causing its lower pointed end to descend and contact the higher plate, pressing down. The pressure of the adjusting support rod 5 is used to level the two plates of the adjacent steel box girder units. This fixture utilizes the rotational motion of the lead screw to convert into vertical pressure, achieving efficient, safe, and rapid adjustment of the plate levelness between adjacent steel box girder units. It can control the height difference between two adjacent plates within 1.0–1.5 mm, effectively improving the overall accuracy of the steel box girder installation and providing strong protection for the stability and safety of the bridge structure.

[0046] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0047] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A flatness fine-tuning device for adjusting the docking of steel box girder units, characterized in that: The flatness fine-tuning device includes a fixed base plate (1), a shaped support plate (2), a sleeve (3), and an adjusting support rod (5). The fixed base plate (1) is welded and fixed to the lower side of the steel plate I (7) and steel plate II (8) in two adjacent steel box girder units that need to adjust flatness. The shaped support plate (2) is vertically welded to the fixed base plate (1). The sleeve (3) is fixedly connected to the upper side of the shaped support plate (2). The adjusting support rod (5) is threaded into the sleeve (3). The adjusting support rod (5) presses down the higher side of the steel plate by rotating and moving downward.

2. The flatness fine-tuning device for adjusting the docking of steel box girder units according to claim 1, characterized in that: The fixed base plate (1) is made of steel plate, and the irregular support plate (2) is also made of steel plate.

3. The flatness fine-tuning device for adjusting the docking of steel box girder units according to claim 1, characterized in that: The irregular support plate (2) is an inverted L-shaped structure made from a single piece of sheet material.

4. The flatness fine-tuning device for adjusting the docking of steel box girder units according to claim 1, characterized in that: The irregular support plate (2) is composed of an inverted L-shaped support plate body (2-1) and an extension plate (2-2). The extension plate (2-2) is provided with a waist-shaped hole (2-3) at the connection between it and the support plate body (2-1). A circular connecting hole is provided at the corresponding position on the support plate body (2-1). The waist-shaped hole (2-3) and the circular connecting hole are connected by a bolt connection assembly (2-4).

5. The flatness fine-tuning device for adjusting the docking of steel box girder units according to claim 1, characterized in that: The upper end of the sleeve (3) is coaxially provided with an annular top plate (4), and the upper side of the irregular support plate (2) is flush with the lower surface of the annular top plate (4) and then fixedly connected to the sleeve (3).

6. The flatness fine-tuning device for adjusting the docking of steel box girder units according to claim 1, characterized in that: The irregular support plate (2) is provided with round holes (2-5) to facilitate the movement of the device.

7. The flatness fine-tuning device for adjusting the docking of steel box girder units according to claim 1, characterized in that: The adjusting support rod (5) is made of round steel; the sleeve (3) has an internal thread (3-1) inside, and the adjusting support rod (5) has an external thread (5-1) in the middle that matches the internal thread (3-1) of the sleeve (3).

8. The flatness fine-tuning device for adjusting the docking of steel box girder units according to claim 1, characterized in that: The lower end of the adjusting support rod (5) is a conical pressing tip (5-2).

9. The flatness fine-tuning device for adjusting the docking of steel box girder units according to claim 1, characterized in that: The upper end of the adjusting support rod (5) is provided with a conical ring handle (5-3).

10. The flatness fine-tuning device for adjusting the docking of steel box girder units according to claim 1, characterized in that: A locking nut (6) is screwed onto the thread of the adjusting support rod (5) located on the upper part of the sleeve (3).

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