Adjustable jacking for large steel pipe
By designing an adjustable top support device for large steel pipes, and utilizing bolt adjustment and flange pressure bearing, the problem of formwork removal after concrete component pouring was solved, enabling support elevation adjustment and convenient formwork removal, thus reducing construction costs.
Patent Information
- Application Number
- CN202520245224.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-17
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-02-17
AI Technical Summary
In railway, highway, municipal utilities, building construction and power engineering projects, existing technologies make it difficult to safely and conveniently dismantle the scaffolding after the concrete components have been poured, especially when the scaffolding is under load and the elevation cannot be lowered to remove the formwork.
Design a large steel pipe adjustable top support device, which uses bolt adjustment and flange pressure bearing, and uses high-strength bolts to connect the upper and lower flanges to realize the adjustment of the support elevation and the convenient dismantling of the formwork.
It enables flexible adjustment of the support elevation, simplifies the construction process, saves labor and materials, and reduces project costs.
Smart Images
Figure CN223767172U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a structural form used in railways, highways, municipal utilities, building construction, and power engineering to withstand vertical jacking forces. Background Technology
[0002] Concrete structures in railways, highways, municipal utilities, building construction, and power engineering are complex. When pouring concrete for large concrete components, steel pipe supports or universal support frames need to be erected under the components. After the concrete pouring is completed, the bottom formwork needs to be removed. However, if the support frame is under load, the formwork cannot be removed; the support frame must be lowered to allow for removal. Adjustable top supports are used to lower the support frame. A special structural form is required to withstand the vertical forces during concrete pouring. Utility Model Content
[0003] The technical problem to be solved by this utility model is to design a top support device that is placed directly on the load-bearing steel pipe support under the concrete component. After the concrete pouring of the component is completed and the formwork removal requirements are met, the support device is used to lower the elevation of the support, thus facilitating the removal of the formwork. At the same time, the device should be simple to assemble and weld, and lightweight.
[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: the large steel pipe adjustable top support serves as the adjustable part of the upper part of the support system, and is adjusted by bolts. The upper and lower ends of the bolts are pressure-bearing through flanges. Two nuts in the middle are reserved with a certain amount of adjustable space.
[0005] The large steel pipe adjustable top support consists of an upper flange and a lower flange. The bolt holes on the upper and lower flanges are arranged in a square or rectangular pattern to ensure connection stability. The high-strength bolts are made of Q235B grade steel to improve load-bearing capacity. The upper and lower flanges are made of A3 steel to enhance the durability and reliability of the overall structure. The stiffening plate is 5mm thick but not more than 10mm thick to enhance the overall compressive strength.
[0006] Compared with the existing technology, the advantages of this utility model are: it does not require oxygen to cut the steel pipe, which facilitates construction, saves labor and materials, reduces project costs, and lowers construction costs. Attached Figure Description
[0007] Figure 1 Elevation view of the adjustable steel pipe top support of this utility model.
[0008] Figure 2 A cross-sectional view of the top of the upper flange and lower steel plate of the adjustable top support for the large steel pipe of this utility model. Detailed Implementation
[0009] All components of the large steel pipe adjustable top support are made of A3 steel. Except for the bolts at the top and bottom ends that are bolted to the flange, all other connections are welded.
[0010] The present invention will be further described in detail below with reference to the drawings.
[0011] Figure 1 This is an elevation view of the adjustable steel pipe support of this utility model. The adjustable steel pipe support consists of an upper flange (1) and a lower flange (2). The upper flange (1) includes an upper steel plate (3) and a lower steel plate (4). Between the upper steel plate (3) and the lower steel plate (4) is a steel pipe (5) with the same diameter as the steel pipe support. Around the steel pipe are four stiffening plates (6). The four stiffening plates (6) are welded to the upper steel plate (3), the lower steel plate (4), and the steel pipe (5). There are four bolt holes on the lower steel plate (4). The lower flange (2) includes an upper steel plate (7) and a lower steel pipe support (8). Between the upper steel plate (7) and the lower steel pipe support (8) are four stiffening plates (9). The four stiffening plates (9) are welded to the upper steel plate (7) and the steel pipe support (8). There are four bolt holes on the upper steel plate (7). Four high-strength bolts (10) connect the upper flange (1) and the lower flange (2). Each high-strength bolt (10) is equipped with four nuts (11). There is one nut (11) on the lower steel plate (4) of the upper flange (1) and one nut (11) on the upper steel plate (7) of the lower flange (2). The two nuts (11) in the middle are reserved with a certain amount of adjustable space. The high-strength bolts (10) are adjusted by means of the high-strength bolts (10). The upper and lower ends of the high-strength bolts (10) are subjected to pressure through the flanges (1, 2).
[0012] Figure 2 This is a cross-sectional view of the top of the upper flange and lower steel plate of the adjustable top support for large steel pipes of this utility model. Between the upper and lower steel plates of the upper flange is a steel pipe (5) with the same diameter as the steel pipe support. Around the steel pipe are four stiffening plates (6). The four stiffening plates (6) are welded to the upper and lower steel plates (4) and the steel pipe (5). There are four bolt holes (10) on the lower steel plate (4).
Claims
1. An adjustable head block for large steel pipe, characterized by, The utility model relates to a high-strength bolt adjustable steel pipe support, comprising: an upper flange, comprising an upper steel plate and a lower steel plate, a steel pipe is arranged between the upper steel plate and the lower steel plate, and a stiffener plate is arranged around the steel pipe, the stiffener plate being weldedly connected with the upper steel plate, the lower steel plate and the steel pipe; a lower flange, comprising an upper steel plate and a steel pipe support, a stiffener plate being arranged between the upper steel plate and the steel pipe support, the stiffener plate being weldedly connected with the upper steel plate and the steel pipe support; high-strength bolts for connecting the upper flange and the lower flange, each high-strength bolt being provided with four nuts, two of the nuts being arranged on the lower steel plate of the upper flange at upper and lower positions respectively, and the other two nuts being arranged on the upper steel plate of the lower flange at upper and lower positions respectively, a certain adjustable space being reserved in the middle; the height of the steel pipe support is adjusted by adjusting the relative positions of the high-strength bolts and the nuts.
2. The adjustable jack for large steel pipes according to claim 1, wherein The bolt holes on the upper flange and the lower flange are arranged in a square or rectangular distribution to ensure the stability of the connection.
3. The adjustable jack for large pipe as set forth in claim 1, wherein The high-strength bolts are made of steel of Q235B grade to improve the bearing capacity.
4. The adjustable jack of claim 1, wherein The upper flange and the lower flange are made of A3 steel to enhance the durability and reliability of the overall structure.
5. The adjustable jack of claim 1, wherein The thickness of the stiffener plate is greater than 5 mm but not more than 10 mm to enhance the overall compression resistance.