Accurate positioning device for cast-in-situ bored pile

Abstract

The utility model discloses an accurate positioning device for a cast-in-situ bored pile, which comprises a cone floating on a mud surface, the bottom surface of the cone is provided with an annular dial for accurate centering, and the top of the cone is provided with an annular hole for fixing a rope; and the circular ring dial and the cone tip of the cone are concentrically arranged. The accurate positioning device for the cast-in-situ bored pile is light in structure, high in practicability and good in positioning effect, the positioning device is simple and feasible when being used for positioning a reinforcement cage, the situation that the reinforcement cage is disturbed due to crane operation and irregular hanging bar shapes in the lowering process of the reinforcement cage is avoided, and the positioning accuracy of the reinforcement cage is improved. And the effect of accurate positioning can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction technology, and more specifically to a precise positioning device for bored piles. Background Technology

[0002] Currently, bored piles are commonly used for the foundations of highway bridges, and the accurate positioning of the reinforcing cage is a major problem in the construction quality of these piles. The current positioning method mainly relies on pre-embedding positioning piles around the casing and using a string line for positioning during the lowering of the reinforcing cage. However, during the lowering of the reinforcing cage to the pile top elevation below the mud surface, disturbance of the reinforcing cage is unavoidable due to crane operation and the irregular shape of the lifting rods, leading to subsequent pile position deviations. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a precise positioning device for bored piles that is lightweight, practical, and has good positioning effect.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows.

[0005] A precision positioning device for bored piles includes a cone floating on the mud surface, with a circular scale on the bottom surface of the cone for precise centering and a circular hole on the top of the cone for fixing a rope; the circular scale is concentric with the tip of the cone.

[0006] To further optimize the technical solution, the cone is a cone structure that is closed on the outside and hollow on the inside.

[0007] To further optimize the technical solution, the cone is made of polypropylene.

[0008] The technical solution is further optimized so that the cone height is 20cm.

[0009] The technical solution has been further optimized, and the diameter of the circular dial is 10cm.

[0010] The technical solution was further optimized so that the diameter of the annular hole is 5mm.

[0011] The technological advancements achieved by this utility model are as follows, due to the adoption of the above technical solutions.

[0012] This utility model provides a precise positioning device for bored piles. It is lightweight, practical, and has a good positioning effect. When using the positioning device to position the reinforcing cage, it is simple and feasible. It avoids the disturbance to the reinforcing cage caused by crane operation and irregular shape of the lifting rod during the lowering process, and can achieve the effect of precise positioning. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the circular dial of this utility model;

[0015] Figure 3 This is a schematic diagram of the structure of this utility model in use.

[0016] Among them: 1. Cone, 2. Circular dial, 3. Circular hole, 4. Wire rope, 5. Casing, 6. Reinforcing cage, 7. Cross wire, 8. Mud surface. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] A precision positioning device for bored piles, combined with Figures 1 to 3 As shown, it includes a cone 1, which floats on the mud surface 8. The bottom surface of the cone 1 is provided with a circular scale 2 for precise centering, and the top of the cone 1 is provided with a circular hole 3 for fixing the rope.

[0019] Cone 1 is an outer closed polypropylene cone with an inner hollow structure, and the cone height of cone 1 is 20cm.

[0020] The diameter of the circular dial 2 is 10cm. The circular dial 2 is concentric with the tip of the cone 1. Its main function is to accurately center and position the steel cage 6 with the positioning pile of the casing 5 after it is lowered to the designated position.

[0021] The diameter of the annular hole 3 is 5mm. Its main function is to fix the rope 4. The rope passes through the intersection of the cross wires 7 of the steel cage 6 itself. After tightening the rope 4, the position of the positioning cone can be fixed.

[0022] When this utility model is in use, after the steel cage is lowered to a specified height below the mud surface inside the casing, the cone floats on the mud surface. The position of the steel cage is accurately located by aligning the circular scale with the crosshairs of the steel cage itself.

Claims

1. A precision positioning device for cast-in-place piles, characterized in that: The utility model relates to a kind of mud level gauges, including conical body (1) floating on mud surface (8), the bottom of conical body (1) is provided with ring scale dial (2) for accurate centering, the top of conical body (1) is provided with ring hole (3) for fixing line rope (4);The ring scale dial (2) is concentrically arranged with the tip of conical body (1).

2. The precision positioning device for cast-in-place piles according to claim 1, characterized in that: The conical body (1) is a hollow conical body structure with closed outside and hollow inside.

3. The precision positioning device for cast-in-place piles according to claim 1, characterized in that: The conical body (1) is made of polypropylene.

4. The precision positioning device for cast-in-place piles according to claim 1, characterized in that: The height of the conical body (1) is 20 cm.

5. The precision positioning device for cast-in-place piles according to claim 1, characterized in that: The diameter of the ring scale dial (2) is 10 cm.

6. The precision positioning device for cast-in-place piles according to claim 1, characterized in that: The diameter of the ring hole (3) is 5 mm.

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