Steel box girder processing pre-assembly support structure

Abstract

The utility model discloses a kind of steel box girder processing pre-assembly support structure, relate to steel structure processing assembly technical field, to solve the technical problem of existing support jig adjusting laborious, without self-locking and lifting easy self-rotation leading to unstable support, the utility model includes the support component on substrate, this component has fixed support column and the movable sleeve of axial movement.It is adjusted component to adopt worm drive turbine, turbine drives screw rod rotation, drives the lifting of movable sleeve with it thread cooperation;Another with the anti-rotation mechanism of guide rod and guide groove composition is to limit the rotation of movable sleeve.The utility model realizes labor-saving adjustment and reliable self-locking by worm gear mechanism, guarantees lifting smooth and positioning accurate by anti-rotation mechanism, compact structure, safe and reliable, significantly improve assembly efficiency.

Description

Technical Field

[0001] This utility model relates to the field of steel structure processing and assembly technology, and in particular to a pre-assembled support structure for steel box girder processing. Background Technology

[0002] In the manufacturing process of modern bridges and large steel structures, adjustable support jigs are essential for precisely controlling the forming curve of the workpiece. Existing technologies have made significant progress compared to earlier fixed, disposable jigs, commonly employing screw-driven, hydraulic jack-driven, or motor-driven lifting mechanisms. This allows for adjustable support height and jig reuse, improving production efficiency to some extent. However, despite these advancements, existing technologies still face several critical bottlenecks in practical applications: First, jigs manually adjusted using ordinary screw rods are not only time-consuming and labor-intensive, but also lack reliable self-locking mechanisms, posing safety hazards under heavy loads. Second, while automated jigs driven by multiple motors improve efficiency, they are costly, complex to control, and difficult to achieve absolute mechanical synchronization between support points, potentially generating harmful internal stresses within the workpiece. More critically, in many existing screw-type adjustment mechanisms, the support block rotates along with the screw during lifting, leading to unstable support and inaccurate positioning, requiring additional manual assistance to prevent rotation, further reducing operational convenience and reliability.

[0003] Therefore, this application provides a pre-assembled support structure for steel box girder processing to meet the requirements. Utility Model Content

[0004] The purpose of this application is to provide a pre-assembled support structure for steel box girder processing, which aims to solve the technical problems of existing support jigs being difficult to adjust, lacking self-locking, and prone to self-rotation during lifting, leading to unstable support.

[0005] To achieve the above objectives, this application provides the following technical solution: a pre-assembled support structure for steel box girder processing, comprising a base plate, a fixing component for installing support components on the base plate, multiple sets of fixing components, a top block on the top of the support component, the support component comprising a base plate and a movable sleeve, the bottom of the base plate being connected to the fixing component, a support column on the top of the base plate, the support component comprising a fixed support column and a movable sleeve capable of axial movement on the support column, an adjustment component for driving the movable sleeve on the support column, and the top block being detachably connected to the movable sleeve, facilitating flexible layout and height adjustment according to workpiece requirements.

[0006] Preferably, the adjusting assembly further includes a worm and a turbine. The turbine is rotatably connected to the support column. Adjusting nuts are provided at both ends of the worm. The worm and the turbine mesh with each other. A threaded rod is connected to the top of the turbine. By using worm gear transmission, effortless adjustment and reliable transmission self-locking are achieved, improving the safety and convenience of operation.

[0007] Preferably, the adjustment assembly further includes a second housing and a first housing for protecting the worm and the turbine, respectively. The second housing is mounted on the support through the first housing. The movable sleeve has a threaded hole adapted to the threaded rod. This housing design effectively protects the core transmission components, prevents foreign objects from entering, and extends the service life and reliability of the equipment.

[0008] Preferably, the first outer shell is provided with a guide rod, and the movable sleeve is provided with a guide block. The guide block has a guide groove that matches the guide rod, which effectively prevents the movable sleeve from rotating during lifting and lowering, ensuring the smoothness of the adjustment process and the accuracy of the positioning.

[0009] Preferably, the fixing plate is mounted on the base plate by fixing screws, and the fixing plate is also provided with studs for fixing the base plate. There are two sets of studs, and the base plate is fixed to the studs by fixing nuts, which realizes the modular installation of the support components, facilitates quick layout and adjustment according to the workpiece size, and improves the versatility of the equipment.

[0010] Preferably, the base plate has a fixing groove that matches the stud, making the alignment and installation of the base plate and the stud more convenient and quick, and simplifying the assembly process.

[0011] In summary, the technical effects and advantages of this utility model are as follows: In this invention, a worm gear transmission mechanism (composed of a worm 54 and a turbine 55) is used as the core adjustment component. Because the worm gear has the characteristics of large transmission ratio and smooth transmission, the operator can easily drive it with just ordinary power tools, which greatly reduces labor intensity and improves adjustment efficiency. More importantly, the worm gear mechanism has a natural transmission self-locking characteristic. Once the drive stops, the entire lifting mechanism will lock instantly in the current position, and can reliably bear heavy loads without any external braking, which greatly improves the safety of operation.

[0012] In this invention, a simple and effective anti-rotation mechanism is formed by setting a guide rod and a guide groove that slides with it. This mechanism ensures that the moving sleeve can only perform pure up and down linear motion during the rotation drive of the threaded rod and will not rotate. This fundamentally solves the problems of instability and inaccurate positioning caused by the rotation of the support head in the prior art, and ensures the smoothness of the lifting process and the accuracy of the final positioning.

[0013] In this invention, the support assembly is detachably mounted on the base plate via a fixing plate and studs, nuts, and other components. This modular design allows users to quickly and flexibly adjust the layout of the support points on the base plate according to the size and shape of different workpieces, achieving "one set of jigs for multiple uses," which greatly improves the versatility and utilization of the equipment and reduces overall costs.

[0014] In this invention, the worm gear transmission component is housed within the first and second housings, providing excellent dust and debris protection, ensuring the cleanliness and lubrication of the transmission mechanism, and extending the service life of the equipment. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the fixing component of this utility model; Figure 3 This is a schematic diagram of the structure of the support component of this utility model; Figure 4 This is a schematic diagram of the anti-rotation structure of this utility model; Figure 5 This is a schematic diagram of the internal structure of the adjustment component of this utility model.

[0017] In the diagram: 1. Base plate; 2. Support assembly; 3. Top block; 4. Fixing plate; 5. Adjustment assembly; 21. Base plate; 22. Fixing groove; 23. Support column; 24. Moving sleeve; 25. Guide groove; 41. Stud; 42. Fixing screw; 43. Fixing nut; 51. First outer shell; 52. Second outer shell; 53. Adjusting nut; 54. Worm gear; 55. Turbine; 56. Threaded rod; 57. Guide rod. Detailed Implementation

[0018] 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 protection scope of the present utility model. Example

[0019] refer to Figure 1-5 The steel box girder pre-assembly support structure shown solves the technical problems of low adjustment accuracy, lack of self-locking function, and instability caused by self-rotation during adjustment in the prior art by installing modular support components 2 on base plate 1 and utilizing the unique transmission mechanism of worm gear and threaded rod linkage in adjustment component 5, combined with the anti-rotation design formed by guide rod 57 and guide groove 25. This solution is compact, labor-saving to adjust, accurate in positioning and safe and reliable, which greatly improves the efficiency and quality of processing and assembling heavy workpieces such as steel box girders.

[0020] As one implementation method in this embodiment, the fixing method of this structure adopts a modular design. On the large base plate 1, there are multiple fixing plates 4 for installation. Each fixing plate 4 is firmly installed on the base plate 1 by fixing screws 42. Two sets of studs 41 are vertically arranged on the fixing plate 4. The base plate 21 of each support component 2 is provided with a fixing groove 22 that matches the stud 41. During installation, simply align the fixing groove 22 of the base plate 21 with the stud 41 and place it, and then lock the base plate 21 onto the stud 41 with the fixing nut 43. This design allows the support component 2 to be quickly installed, disassembled and rearranged on the base plate 1 according to the size and shape of the workpiece, which has high flexibility and versatility.

[0021] As one implementation method in this embodiment, the core adjustment function of this structure is realized by the adjustment component 5 inside the support component 2. A hollow support column 23 is fixedly installed on the base plate 21 of the support component 2. The adjustment component 5 adopts a worm gear transmission mechanism, with its worm 55 rotatably connected to the support column 23, and the worm 54 meshing with it is installed on the side of the worm 55. Both ends of the worm 54 are provided with adjustment nuts 53. The adjustment nuts can be designed as standard hexagonal heads, which are convenient to drive with power tools. When an external tool drives the adjustment nut 53, the worm 54 rotates, which in turn drives the worm 55 to rotate slowly and powerfully through a high transmission ratio. The top of the worm 55 is coaxially fixedly connected to a threaded rod 56. Therefore, the rotation of the worm 55 will be directly converted into the same speed rotation of the threaded rod 56.

[0022] As one implementation method in this embodiment, this structure cleverly solves the problem of rotation during the lifting process. A movable sleeve 24, which can move axially, is fitted outside the support column 23 and the adjusting assembly 5. The movable sleeve 24 has a threaded hole inside that matches the threaded rod 56. To prevent the movable sleeve 24 from rotating along with the threaded rod 56, this solution includes an anti-rotation mechanism. Specifically, a vertical guide rod 57 is fixedly installed on the first outer shell 51 used to protect the turbine 55. Correspondingly, a guide block is provided on the outer wall of the movable sleeve 24, and the guide block has a sliding contact with the guide rod 57. With the cooperation of the guide groove 25, the movable sleeve 24 is restricted to linear up-and-down movement and cannot rotate. In addition, the first housing 51 and the second housing 52, which protects the worm gear 54, provide good dust protection for the core transmission components and improve the durability of the equipment. At the top of the movable sleeve 24, a top block 3 is detachably connected by threads or other means, which facilitates the replacement of support heads of different shapes as needed. The first housing 51 has a through hole that matches the threaded rod 56. The bottom of the first housing 51 is connected to the support column 23, while the worm gear 53 is rotatably connected in the second housing 52.

[0023] The working principle of this utility model is as follows: The operator adjusts the height of a support component 2 as needed. Using tools such as an electric wrench, the operator drives the adjusting nut 53 at one end of the worm gear 54. The rotation of the worm gear 54 drives the turbine 55 to rotate at a large reduction ratio through meshing. The threaded rod 56, which is fixed to the turbine 55, rotates at the same speed. Because the rotation of the movable sleeve 24 is restricted by the cooperation of the guide rod 57 and the guide groove 25, the rotating threaded rod 56 rotates relative to the threaded hole inside the movable sleeve 24, like tightening a screw. This forces the movable sleeve 24 to move smoothly upwards or downwards along the direction of the guide rod 57. When the predetermined height is reached, the operator stops driving the worm gear 54. Due to the inherent self-locking characteristic of the worm gear mechanism, the entire adjustment mechanism will instantly lock in the current position, reliably withstanding the enormous pressure from the top block 3 without slipping down. This achieves labor-saving, precise, and safe support height adjustment.

[0024] The electromechanical connections involved in this utility model are common practices used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments; they are common knowledge.

[0025] Components not described in detail in this article are existing technologies.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pre-assembled support structure for steel box girder processing, comprising a base plate (1), characterized in that: The base plate (1) is provided with a fixing plate (4) for mounting the support assembly (2). The fixing plate (4) is provided with multiple sets. The top of the support assembly (2) is provided with a top block (3). The support assembly (2) includes a base plate (21) and a movable sleeve (24). The bottom of the base plate (21) is connected to the fixing plate (4). The top of the base plate (21) is provided with a support column (23). The support assembly (2) includes a fixed support column (23) and a movable sleeve (24) that can move axially on the support column. The support column (23) is provided with an adjustment assembly (5) for driving the movable sleeve (24). The top block (3) is detachably connected to the movable sleeve (24).

2. The pre-assembled support structure for steel box girder processing according to claim 1, characterized in that: The adjustment assembly (5) also includes a worm (54) and a turbine (55). The turbine (55) is rotatably connected to the support column (23). Both ends of the worm (54) are provided with adjustment nuts (53). The worm (54) and the turbine (55) mesh with each other. A threaded rod (56) is connected to the top of the turbine (55).

3. The pre-assembled support structure for steel box girder processing according to claim 2, characterized in that: The adjustment assembly (5) further includes a second housing (52) and a first housing (51) for protecting the worm (54) and the turbine (55) respectively. The second housing (52) is mounted on the support (23) through the first housing (51). The movable sleeve (24) has a threaded hole adapted to the threaded rod (56).

4. The pre-assembled support structure for steel box girder processing according to claim 3, characterized in that: The first outer shell (51) is provided with a guide rod (57), and the movable sleeve (24) is provided with a guide block. The guide block is provided with a guide groove (25) that is compatible with the guide rod (57).

5. The pre-assembled support structure for steel box girder processing according to claim 1, characterized in that: The fixing plate (4) is mounted on the base plate (1) by fixing screws (42). The fixing plate (4) is also provided with studs (41) for fixing the base plate (21). There are two sets of studs (41). The base plate (21) is fixed to the studs (41) by fixing nuts (43).

6. The pre-assembled support structure for steel box girder processing according to claim 5, characterized in that: The base plate (21) is provided with a fixing groove (22) that is compatible with the stud (41).

Images