Built-in steel pipe pile extension guide device
By designing a built-in steel pipe pile length guide device, using the combination of equal-diameter connecting barrel and variable-diameter guiding barrel, the problem of difficulty and safety hazards of steel pipe piles in high altitude or water environment is solved, and higher safety and docking accuracy are achieved.
Patent Information
- Application Number
- CN202422152994.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-09-03
AI Technical Summary
It is difficult to extend steel pipe piles in high altitudes or water environments, which poses safety risks. In order to reduce the number of connections, there are often illegal operations, resulting in the risk of lifting equipment capsizing and falling into the water.
A built-in steel pipe pile joint long guide device is designed, including an equal-diameter connecting cylinder and a variable-diameter guiding cylinder. It is welded to connect cylinder to the inner wall of the upper steel pipe pile by welding, and a variable-diameter guiding cylinder is used to provide guidance, so as to achieve accurate docking of the upper and lower steel pipe piles.
The air docking time of steel pipe piles is reduced, safety and docking accuracy are improved, the verticality of steel pipe piles and the vertical force transmission after lengthening are ensured, no additional bending moment is introduced, and the structural stiffness at the interface is increased.
Smart Images
Figure CN223003387U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bridge temporary structure construction, in particular to an internal steel pipe pile lengthening guiding device. Background Technique
[0002] Due to its advantages such as large flexural modulus and balanced strong and weak axes, steel pipe piles are often used as temporary structures in bridge projects, such as steel trestle foundations and high-altitude supports. Limited by the lifting capacity and working radius of lifting equipment, steel pipe piles are generally hoisted in segments and spliced and lengthened section by section. Steel pipe piles are slender structures, and their lengthening working surfaces are often in harsh environments such as high altitude and water, making docking difficult and the lengthening work highly dangerous. In order to reduce the number of lengthening operations, there are often illegal operations such as lengthening steel pipe piles on the ground and hoisting and installing overweight, and even tragedies such as the overturning and falling of lifting equipment into the water occur. Content of the Utility Model
[0003] The utility model aims to solve the deficiencies of the prior art and provides an internal steel pipe pile lengthening guiding device.
[0004] To achieve the above object, the utility model adopts the following technical solutions:
[0005] An internal steel pipe pile lengthening guiding device for connecting the upper steel pipe pile and the lower steel pipe pile of a steel pipe pile, comprising an equal-diameter connecting cylinder and a variable-diameter guiding cylinder with an integrated structure. The equal-diameter connecting cylinder extends into the upper steel pipe pile, and the outer wall of the equal-diameter connecting cylinder is welded to the lower end of the inner wall of the upper steel pipe pile. The variable-diameter guiding cylinder comprises a plurality of tapered cylinders with decreasing diameters connected in sequence from top to bottom.
[0006] The outer diameter of the equal-diameter connecting cylinder is 10 - 20 mm smaller than the inner diameter of the steel pipe pile.
[0007] The height of the equal-diameter connecting cylinder extending into and welded inside the upper steel pipe pile is not less than 100 mm.
[0008] The height of the variable-diameter guiding cylinder is not less than the outer diameter of the steel pipe pile.
[0009] The diameter of the top of the tapered cylinder at the uppermost end of the variable-diameter guiding cylinder is not greater than 0.5 times the outer diameter of the steel pipe pile.
[0010] The included angle between the vertical conical contour lines of two adjacent tapered cylinders is not less than 150°.
[0011] The wall thickness of the equal-diameter connecting cylinder and the variable-diameter guiding cylinder is not less than 16 mm.
[0012] The beneficial effects of the present utility model are as follows: The present utility model can reduce the aerial butt-joint time of steel pipe piles, improve safety; improve the butt-joint accuracy, ensure the verticality of steel pipe piles, and ensure that the steel pipe piles transfer force vertically and do not introduce additional bending moments after being lengthened; increase the structural stiffness at the interface of steel pipe piles, and ensure that the joint strength is not less than that of the main body of the steel pipe pile. Brief Description of the Drawings
[0013] Figure 1 is the front view of the present utility model;
[0014] Figure 2 is the bottom view of the present utility model;
[0015] Figure 3 is the schematic diagram when the present utility model is in use;
[0016] In the figure: 1 - equal-diameter connecting cylinder; 2 - variable-diameter guiding cylinder; 3 - steel pipe pile;
[0017] 21 - conical cylinder;
[0018] 31 - upper-section steel pipe pile; 32 - lower-section steel pipe pile;
[0019] The following will be described in detail with reference to the embodiments of the present utility model and the accompanying drawings. Specific Embodiments
[0020] The principles and features of the present utility model will be described below with reference to the accompanying drawings. The examples given are only for explaining the present utility model and are not intended to limit the scope of the present utility model. In the following paragraphs, the present utility model will be described more specifically by way of example with reference to the accompanying drawings. According to the following description, the advantages and features of the present utility model will be clearer. It should be noted that the drawings are all in a very simplified form and use non-precise scales, only for the purpose of facilitating and clearly assisting in explaining the purpose of the embodiments of the present utility model.
[0021] It should be noted that when a component is referred to as "fixed to" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.
[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this utility model belongs. The terms used in the specification of this utility model herein are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.
[0023] The following further describes this utility model in conjunction with the drawings and embodiments:
[0024] An internal steel pipe pile lengthening guiding device, as Figures 1 to 3 shown, is used to connect the upper steel pipe pile 31 and the lower steel pipe pile 32 of the steel pipe pile 3, and includes an equal-diameter connecting cylinder 1 and a variable-diameter guiding cylinder 2 with an integrated structure.
[0025] The equal-diameter connecting cylinder 1 and the variable-diameter guiding cylinder 2 form a steel cylindrical structure that is larger at the top and smaller at the bottom.
[0026] The equal-diameter connecting cylinder 1 extends into the upper steel pipe pile 31, and the outer wall of the equal-diameter connecting cylinder 1 is welded to the lower end of the inner wall of the upper steel pipe pile 31.
[0027] The variable-diameter guiding cylinder 2 includes a plurality of tapered cylinders 21 with decreasing diameters connected in sequence from top to bottom, which plays a guiding role during connection and extends into the lower steel pipe pile 32.
[0028] The outer diameter of the equal-diameter connecting cylinder 1 is 10 - 20 mm smaller than the inner diameter of the steel pipe pile 3.
[0029] The height at which the equal-diameter connecting cylinder 1 extends into and is welded to the upper steel pipe pile 3 is not less than 100 mm.
[0030] The height of the variable-diameter guiding cylinder 2 is not less than the outer diameter of the steel pipe pile 3 to provide sufficient guiding length.
[0031] The diameter of the top of the tapered cylinder 21 at the uppermost end of the variable-diameter guiding cylinder 2 is not greater than 0.5 times the outer diameter of the steel pipe pile 3, so as to quickly find the interface during the hoisting of the steel pipe pile.
[0032] The diameters of the plurality of tapered cylinders 21 decrease from top to bottom, and the curvature change at the decreasing part should be gentle. The included angle between the vertical conical contour lines of adjacent two tapered cylinders 21 is not less than 150°.
[0033] The wall thickness of the equal-diameter connecting cylinder 1 and the variable-diameter guiding cylinder 2 should ensure the collision stability and local stiffness of the hoisting section of the steel pipe pile. The wall thickness of the equal-diameter connecting cylinder 1 and the variable-diameter guiding cylinder 2 is not less than 16 mm.
[0034] The implementation manner of this utility model is as follows:
[0035] 1. Process the segments of the steel pipe pile 3 and the built-in steel pipe pile extension guide device, and weld the equal-diameter connecting tube of the guide device to the inner wall of the upper section of the steel pipe pile 31.
[0036] 2. Sink the lower steel pipe pile 32 into the soil to a certain depth.
[0037] 3. Lift the upper steel pipe pile 31 welded with the guide device, and roughly position the upper steel pipe pile 31 above the top of the lower steel pipe pile 32.
[0038] Fourth, the variable diameter guide tube 2 exposed at the bottom of the upper steel pipe pile 31 is inserted into the lower steel pipe pile 32 and the hook is slowly lowered until the variable diameter guide tube 2 is completely inserted into the lower steel pipe pile 32.
[0039] 5. Lift the upper steel pipe pile 31 to fine-tune the alignment between the upper steel pipe pile 31 and the lower steel pipe pile 32 until the verticality of the upper steel pipe pile 31 and the lower steel pipe pile 32 meets the specification requirements;
[0040] 6. Connect the upper section steel pipe pile 31 and the lower section steel pipe pile 32.
[0041] The utility model can reduce the time of air docking of the steel pipe pile 3 and improve safety; improve docking accuracy, ensure the verticality of the steel pipe pile 3, ensure vertical force transmission after the steel pipe pile 3 is extended, and do not introduce additional bending moment; increase the structural rigidity at the interface of the steel pipe pile 3 and ensure that the node strength is not less than the main body of the steel pipe pile 3.
[0042] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the utility model, or it is directly applied to other occasions without improvement, it is within the protection scope of the utility model.
Claims
1. An internal steel pipe pile lengthening guiding device, characterized in that, It is used to connect the upper steel pipe pile (31) and the lower steel pipe pile (32) of the steel pipe pile (3), and includes an equal-diameter connecting cylinder (1) and a variable-diameter guiding cylinder (2) with an integral structure. The equal-diameter connecting cylinder (1) extends into the upper steel pipe pile (31), and the outer wall of the equal-diameter connecting cylinder (1) is welded to the lower end of the inner wall of the upper steel pipe pile (31). The variable-diameter guiding cylinder (2) includes a plurality of tapered cylinders (21) with decreasing diameters connected in sequence from top to bottom.
2. The internal steel pipe pile lengthening guiding device according to claim 1, characterized in that, The outer diameter of the equal-diameter connecting cylinder (1) is 10 - 20 mm smaller than the inner diameter of the steel pipe pile (3).
3. The internal steel pipe pile lengthening guiding device according to claim 2, characterized in that, The height that the equal-diameter connecting cylinder (1) extends into and is welded to the inside of the upper steel pipe pile (31) is not less than 100 mm.
4. The internal steel pipe pile lengthening guiding device according to claim 3, characterized in that, The height of the variable-diameter guiding cylinder (2) is not less than the outer diameter of the steel pipe pile (3).
5. The internal steel pipe pile lengthening guiding device according to claim 4, characterized in that, The diameter of the top of the tapered cylinder (21) at the uppermost end of the variable-diameter guiding cylinder (2) is not greater than 0.5 times the outer diameter of the steel pipe pile (3).
6. The internal steel pipe pile lengthening guiding device according to claim 5, characterized in that, The included angle between the vertical conical contour lines of two adjacent tapered cylinders (21) is not less than 150°.
7. The internal steel pipe pile lengthening guiding device according to claim 6, characterized in that, The wall thickness of the equal-diameter connecting cylinder (1) and the variable-diameter guiding cylinder (2) is not less than 16 mm.