Quick positioning tool for cast-in-situ bored pile reinforcement cage

Abstract

The utility model discloses a cast-in-situ bored pile reinforcement cage quick positioning tool which comprises a base, a positioning block, a positioning block, a positioning block and a positioning block. The center of the base is provided with a center hole for a reinforcement cage to penetrate through; a clamping assembly is arranged at the bottom of the base and used for fixing the base to the pile casing. The inner diameter of the supporting cylinder is not smaller than that of the center hole; the supporting cylinder and the center hole are coaxially arranged, and the supporting cylinder is fixed to the base. A plurality of threaded holes are evenly formed in the side wall of the supporting cylinder in the circumferential direction of the supporting cylinder, and a lead screw is in threaded connection with the interior of each threaded hole. One end of the lead screw extends out of the supporting cylinder, and the other end of the lead screw is located in the supporting cylinder and connected with a guide plate. The steel reinforcement cage can vertically move downwards along the center of a pile hole all the time, the positioning difficulty of the steel reinforcement cage is lowered, and the construction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of cast-in-place pile construction. More specifically, the utility model relates to a quick positioning tool for the steel reinforcement cage of a bored cast-in-place pile. Background Art

[0002] A bored cast-in-place pile refers to a pile formed by means of mechanical drilling, manual excavation, etc. at the construction site to form a pile hole in the foundation soil, and placing a steel reinforcement cage and pouring concrete therein. After the steel reinforcement cage is placed inside the pile hole, it is necessary to ensure that the thickness of the concrete wrapped around the circumference of the steel reinforcement cage is consistent to prevent the steel reinforcement cage structure inside the side with a thinner concrete thickness from being easily corroded. Therefore, when the steel reinforcement cage is placed into the pile hole, it is necessary to position the steel reinforcement cage to ensure that the center of the steel reinforcement cage and the center of the pile hole are on the same axis. Currently, the conventional method is to use a crane to lift the steel reinforcement cage, and it is necessary to measure and adjust it multiple times to move the steel reinforcement cage to the center of the pile hole, and then slowly place the steel reinforcement cage into the pile hole, which has the problems of large operation difficulty and low efficiency. Content of the Utility Model

[0003] An object of the utility model is to solve at least the above problems and provide at least the advantages described later.

[0004] In order to achieve these objects and other advantages according to the utility model, a quick positioning tool for the steel reinforcement cage of a bored cast-in-place pile is provided. A casing is arranged in the pile hole, and it is characterized in that it includes:

[0005] A base, a central hole through which the steel reinforcement cage can pass is opened at the center thereof; a clamping assembly is arranged at the bottom of the base for fixing the base on the casing.

[0006] A support cylinder, the inner diameter of which is not less than that of the central hole; the support cylinder is coaxially arranged with the central hole and is fixed on the base; a plurality of threaded holes are uniformly opened along the circumferential direction on the side wall of the support cylinder, and a lead screw is threadedly connected in each of the threaded holes; one end of the lead screw extends out of the support cylinder, and the other end is located inside the support cylinder and is connected with a guide plate.

[0007] As a further scheme of the utility model: the upper end of the guide plate is rotatably connected with the lead screw, and the lower end extends into the casing; an expansion link is arranged on the side of the lower end of the guide plate facing the casing.

[0008] As a further scheme of the utility model: the expansion link includes a sliding cylinder fixedly connected with the guide plate, a sliding rod is inserted at one end of the sliding cylinder far away from the guide plate, and a limit bolt is threadedly connected to the side wall of the sliding cylinder, and one end of the limit bolt passes through the sliding cylinder and abuts against the sliding rod.

[0009] As a further solution of the present utility model: It further includes a bearing, the inner ring of the bearing is fixedly sleeved on the lead screw, and the outer ring thereof is embedded in the guide plate.

[0010] As a further solution of the present utility model: The clamping assembly includes a plurality of limiting tubes and adjusting screws; the plurality of limiting tubes are symmetrically arranged along the outer periphery of the central hole; the limiting tubes are vertically arranged, the top thereof is fixedly connected to the base, and the bottom is bent and extended towards the center of the base to form an adjusting tube section; one end of the adjusting screw is threadedly connected to the end of the adjusting tube section, and the other end abuts against the protection cylinder.

[0011] As a further solution of the present utility model: The thickness of the base is not less than 2 cm.

[0012] The present utility model has at least the following beneficial effects:

[0013] For the quick positioning tooling for the steel cage of bored cast-in-place piles provided by the present utility model, after centering the central hole of the base with the pile hole, the base is fixed by using the clamping assembly, and then the positions of the guide plates are adjusted by adjusting the lead screw on the support cylinder, so that each guide plate is attached to the side wall of the steel cage, the steel cage is limited at the central position of the support cylinder, and by means of the supporting and guiding action of the guide plate, the steel cage always vertically moves down along the center of the pile hole, reducing the positioning difficulty of the steel cage and improving the construction efficiency.

[0014] Other advantages, objectives and features of the present utility model will be partially reflected by the following description, and partially will also be understood by those skilled in the art through the research and practice of the present utility model. Description of the Drawings

[0015] Figure 1 It is a structural schematic diagram of the quick positioning tooling for the steel cage of bored cast-in-place piles described in the present utility model;

[0016] Figure 2 It is a structural schematic diagram of the telescopic rod described in the present utility model; Detailed Embodiments

[0017] The present utility model will be described in detail and completely below with reference to the drawings. Those of ordinary skill in the art will be able to implement the present utility model based on these descriptions. Before describing the present utility model in conjunction with the drawings, it should be particularly noted that: The technical solutions and technical features provided in each part including the following description of the present utility model can be combined with each other without conflict.

[0018] In addition, the embodiments of the present utility model involved in the following description are generally only a part of the embodiments of the present utility model, rather than all the embodiments. Therefore, all other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0019] The present utility model will be further described in detail below in conjunction with the drawings and embodiments, and the specific implementation process is as follows:

[0020] As Figure 1 and Figure 2 shown, the present utility model provides a quick positioning tooling for the steel cage of a bored cast-in-place pile. A casing is arranged in the pile hole, including:

[0021] A base 1, with a central hole in its center through which the steel cage can pass; a clamping assembly is arranged at the bottom of the base 1 for fixing the base 1 on the casing.

[0022] A support cylinder 3, the inner diameter of which is not less than that of the central hole; the support cylinder 3 is coaxially arranged with the central hole and fixed on the base 1; a plurality of threaded holes are evenly arranged on the side wall of the support cylinder 3 along its circumferential direction, and a lead screw 4 is threadedly connected in each threaded hole; one end of the lead screw 4 extends out of the support cylinder 3, and the other end is located inside the support cylinder 3 and connected with a guide plate 6.

[0023] In this technical solution, the diameter of the central hole on the base 1 can be set to a larger diameter to adapt to the construction of pile holes with different diameters. First, align the central hole of the base 1 with the center of the pile hole, and then fix the base 1 on the casing through the clamping assembly. Then, when the lead screw 4 is rotated, it is pushed to move inside or outside the support cylinder 3 to adjust the position of the guide plate 6. Make the distances of the guide plates 6 from the center of the pile hole the same. When hoisting and placing the steel cage, first align the bottom of the steel cage with the support cylinder 3, insert it into the support cylinder 3, and then finely adjust each lead screw 4 so that each guide plate 6 is in contact with the side wall of the steel cage to form a guiding channel for the steel cage, thereby limiting the steel cage at the central position of the support cylinder 3, and then continue to lower it. The steel cage slowly slides down into the pile hole under the guiding action of the guide plate 6, thereby realizing the precise positioning of the steel cage. Preferably, a wrench 5 is arranged at one end of the lead screw located outside the support cylinder 3 to facilitate the operation of construction workers.

[0024] In another technical solution, the upper end of the guide plate 6 is rotatably connected to the lead screw, and the lower end extends into the casing 1; a telescopic rod is provided on one side of the lower end of the guide plate 6 facing the casing. The relatively long guide plate 6 can strengthen the support and guiding effect on the steel reinforcement cage. To ensure the stability of the guide plate 6, the telescopic rod is provided at its lower end. After the position of the guide plate 6 is determined, the length of the telescopic rod is adjusted so that the end away from the guide plate 6 abuts against the casing, thereby providing support for the guide plate 6; as much as possible, avoid the guide plate 6 from being bent and deformed due to uneven force, which affects the accuracy of the positioning of the steel reinforcement cage.

[0025] Further, the telescopic rod includes a sliding cylinder 10 fixedly connected to the guide plate 6. A sliding rod 11 is inserted into one end of the sliding cylinder 10 away from the guide plate 6. A limit bolt 12 is threadedly connected to the side wall of the sliding cylinder 10. One end of the limit bolt 12 passes through the sliding cylinder 10 and abuts against the sliding rod 11. One end of the sliding cylinder 10 is fixedly connected to the lower end of the guide plate 6, and the sliding rod 11 is inserted into the other end of the sliding cylinder 10; the sliding rod 11 is fixed by the limit bolt 12 for litigation, thereby realizing the adjustment of the length of the telescopic rod. Rotate the limit bolt 12 to abut against or leave the sliding rod 11 to fix or loosen the sliding rod 11.

[0026] Further, a bearing 7 is further included. The inner ring of the bearing 7 is fixedly sleeved on the lead screw 4, and its outer ring is embedded in the guide plate 6. While rotatably connecting the lead screw 4 and the guide plate 6 through the bearing 7, reduce the frictional resistance force received when the lead screw 4 rotates.

[0027] In another technical solution, the clamping assembly includes a plurality of limit tubes 2 and adjusting screws 9; the plurality of limit tubes 2 are symmetrically arranged along the outer circumference of the central hole; the limit tubes 2 are arranged vertically, the top of which is fixedly connected to the base 1, and the bottom bends and extends towards the center of the base 1 to form an adjusting tube section 8; one end of the adjusting screw 9 is threadedly connected to the end of the adjusting tube section 8, and the other end abuts against the casing. An internal thread matching the adjusting screw 9 is provided at one end of the adjusting tube section 8 facing the casing and is threadedly connected to the adjusting screw 9. By rotating the adjusting screw 9, the length of the adjusting screw 9 extending out of the adjusting tube section 8 is controlled so that it abuts against the casing. The plurality of adjusting screws 9 jointly clamp the casing to maintain the stability of the base 1. Preferably, a gasket is provided at one end of the adjusting screw 9 facing the casing to increase the frictional force and improve the stability during the clamping process.

[0028] In another technical solution, the thickness of the base 1 is not less than 2 cm, so that the base 1 has sufficient strength and stability to meet the construction requirements.

[0029] Although the embodiments of the present utility model have been disclosed as above, they are not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present utility model. For those familiar with the field, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present utility model is not limited to the specific details and the illustrated examples described herein.

Claims

1. A quick positioning tool for bored pile reinforcement cage, wherein a casing is arranged in the pile hole, characterized in that: include: A base, the center of which is provided with a central hole for the steel cage to pass through; a clamping assembly is provided at the bottom of the base for fixing the base on the casing; A support tube, whose inner diameter is not less than the center hole; the support tube is coaxially arranged with the center hole and fixed on the base; a plurality of threaded holes are evenly opened on the side wall of the support tube along its circumference, and a screw rod is threadedly connected in each of the threaded holes; one end of the screw rod extends out of the support tube, and the other end is located in the support tube and is connected to a guide plate.

2. The quick positioning tool for bored pile reinforcement cage according to claim 1, characterized in that: The upper end of the guide plate is rotatably connected to the screw rod, and the lower end extends into the casing; a telescopic rod is arranged on one side of the lower end of the guide plate facing the casing.

3. The quick positioning tool for bored pile reinforcement cage according to claim 2, characterized in that: The telescopic rod includes a slide tube fixedly connected to the guide plate, a slide rod is inserted into one end of the slide tube away from the guide plate, a limiting bolt is threadedly connected to the side wall of the slide tube, and one end of the limiting bolt passes through the slide tube and abuts against the slide rod.

4. The quick positioning tool for bored pile reinforcement cage according to claim 2, characterized in that: It also includes a bearing, the inner ring of the bearing is fixedly sleeved on the screw rod, and the outer ring of the bearing is embedded in the guide plate.

5. The quick positioning tool for bored pile reinforcement cage according to claim 1, characterized in that: The clamping assembly includes a plurality of limit tubes and an adjusting screw; the plurality of limit tubes are symmetrically arranged along the outer circumference of the center hole; the limit tube is vertically arranged, the top of which is fixedly connected to the base, and the bottom is bent and extended toward the center of the base to form an adjusting tube section; one end of the adjusting screw is threadedly connected to the end of the adjusting tube section, and the other end is abutted against the casing.

6. The quick positioning tool for bored pile reinforcement cage according to claim 1, characterized in that: The thickness of the base is not less than 2 cm.

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