Pile foundation reinforcement cage installation guide device

Abstract

The utility model relates to the technical field of pile foundation construction, in particular to a pile foundation reinforcement cage installation guiding device which comprises a pile casing and a bearing platform, the bearing platform comprises multiple sets of I-shaped steel, reinforcing rib plates and lifting lugs, the I-shaped steel is arranged in a frame-shaped enclosing mode, a reinforcement cage positioning pipe is arranged on the bearing platform, and the lifting lugs are arranged on the reinforcing rib plates. At least three groups of guide assemblies are arranged on the upper side of the pile casing; the guide assembly comprises a guide steel pipe, a limiting clamping plate and a hanging ring, the hanging ring is welded to the top end of the guide steel pipe, the limiting clamping plate is arranged on the outer side of the top of the guide steel pipe, and a limiting clamping groove matched with the pipe wall of the pile casing is formed in the lower side of the limiting clamping plate; the thickness of a protection layer of the reinforcement cage is effectively controlled through the guide assembly, eccentricity of the reinforcement cage is prevented, and soil collapse and reinforcement cage pollution caused by hole wall scratching in the descending process of the reinforcement cage are prevented, so that accurate installation of the reinforcement cage is achieved, and construction quality is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of pile foundation construction technology, and in particular to a guide device for installing pile foundation steel cage. Background Technology

[0002] As an important part of bridge construction, the positioning quality of the pile foundation reinforcement cage affects the subsequent construction of the substructure such as piers and columns, directly restricting the project's progress, cost, and quality. Although the drilling and grouting pile construction technology is already very mature, the problem of pile foundation reinforcement cage misalignment has always existed, especially for single-pile and single-column foundations of highway bridges. Improving the positioning accuracy of the pile foundation reinforcement cage is therefore particularly important.

[0003] The original technology used manual visual inspection supplemented by small machinery to ensure the center of the reinforcing steel cage aligned with the center of the pile. This method could not reliably control the position of the reinforcing steel cage, often resulting in large deviations in the pile foundation and failure to pass pile foundation inspections. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a guide device for the installation of pile foundation steel cages.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A pile foundation reinforcement cage installation guide device includes a casing and a support platform. The support platform includes an I-beam, reinforcing ribs and lifting lugs. Multiple sets of I-beams are provided and arranged in a frame-like enclosure. The distance between the I-beams and the casing is greater than 30 cm. A reinforcement cage positioning tube is provided on the support platform. A guide assembly is provided on the upper side of the casing. The guide assembly is provided in at least three sets.

[0007] The guiding assembly includes a guide steel pipe, a limiting plate, and a lifting ring. The lifting ring is welded to the top of the guide steel pipe, and the limiting plate is located on the outer side of the top of the guide steel pipe. The lower side of the limiting plate is provided with a limiting groove that is adapted to the wall of the protective sleeve.

[0008] Preferably, the limiting plate is welded to the outer wall of the guide steel pipe, and the limiting plate is arranged radially along the guide steel pipe.

[0009] Preferably, the limiting plates are provided in two sets and arranged in a V-shape, with the side of the two sets of limiting plates that are close to each other connected to the outer wall of the guide steel pipe.

[0010] Preferably, the top side wall of the guide steel pipe is provided with a connecting frame, a movable frame is hinged to the connecting frame, and a sliding groove is provided on the lower side of the movable frame;

[0011] The upper side of the limiting plate is provided with a slide rail, and the slide rail is slidably connected to the slide groove in the horizontal direction.

[0012] Preferably, the movable frame is provided in two sets, with a spring between them, and the movable frame is detachably connected to the limiting plate.

[0013] Preferably, a protective sleeve is provided inside the limiting slot, and the protective sleeve abuts against the protective sleeve.

[0014] The beneficial effects of this utility model are as follows:

[0015] Compared with the prior art, this utility model effectively controls the thickness of the protective layer of the rebar cage through the guide component, prevents the rebar cage from being eccentric, and prevents the rebar cage from scraping against the hole wall during the lowering process, which would cause the soil to collapse and contaminate the rebar cage. Then, the rebar cage positioning pipe places the rebar cage on the support platform to prevent the rebar cage from being misaligned due to the settlement of the casing, thereby achieving precise installation of the rebar cage and ensuring construction quality. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of a pile foundation steel cage installation guide device proposed in this utility model;

[0017] Figure 2 This is a top view of a guide device for installing a pile foundation steel cage, as proposed in this utility model.

[0018] Figure 3 for Figure 1 A magnified schematic diagram of the structure at point A in the middle.

[0019] In the diagram: 1. Supporting platform; 2. Rebar cage positioning tube; 3. Casing; 4. Guide assembly; 401. Movable frame; 402. Slide rail; 403. Spring; 404. Connecting frame; 41. Guide steel pipe; 42. Limiting plate; 43. Lifting ring; 5. Lifting lug. Detailed Implementation

[0020] 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. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0021] Reference Figure 1-3A pile foundation reinforcement cage installation guide device includes a casing 3 and a support platform 1. The support platform 1 includes an I-beam, reinforcing ribs and lifting lugs 5. The I-beam is provided in multiple sets and is arranged in a frame-like enclosure and welded and fixed. The overall strength is improved by the reinforcing ribs. The distance between the I-beam and the casing 3 is greater than 30 cm to avoid affecting the construction of the casing 3. The support platform 1 is provided with a reinforcement cage positioning pipe 2. The reinforcement cage is placed on the support platform 1 through the reinforcement cage positioning pipe 2 to prevent the reinforcement cage from being misaligned due to the settlement of the casing 3.

[0022] The upper side of the casing 3 is provided with a guide component 4. There are at least three sets of guide components 4, and generally four sets are preferred. They are distributed on the four quadrant points of the casing 3. The thickness of the protective layer of the steel cage is effectively controlled by the guide components 4 installed on the four quadrant points of the casing 3, so as to prevent the steel cage from being eccentric and to prevent the steel cage from scraping against the hole wall during the lowering process, which would cause the soil to collapse and contaminate the steel cage.

[0023] The guide assembly 4 includes a guide steel pipe 41, a limiting plate 42, and a lifting ring 43. The guide steel pipe 41 is 6m long and uses a steel pipe with an outer diameter of 70mm and a wall thickness of 5mm. The lifting ring 43 is welded to the top of the guide steel pipe 41. After the concrete is poured, the guide assembly 4 is pulled out by connecting the lifting ring 43 with a crane. The limiting plate 42 is set on the outer side of the top of the guide steel pipe 41. The lower side of the limiting plate 42 is provided with a limiting groove that matches the wall of the casing 3. The guide steel pipe 41 is installed inside the casing 3 through the limiting plate 42. After the guide steel pipe 41 is installed, the reinforcing cage is installed to limit the position of the reinforcing cage and improve the stability and accuracy of the installation. After all the reinforcing cages are installed, the position of the reinforcing cage is recalibrated through the guide steel pipe 41. After confirming that the requirements are met, the reinforcing cage is fixed.

[0024] In Example 1, the limiting plate 42 is welded to the outer wall of the guide steel pipe 41. The limiting plate 42 is set radially along the guide steel pipe 41. The guide steel pipe 41 is installed through the limiting plate 42. The limiting plate 42 is made of 10mm thick steel plate. The opening position of the limiting groove on the limiting plate 42 is calculated and determined according to the diameter of the casing 3 and the outer diameter of the reinforcing cage.

[0025] In the second embodiment, two sets of limiting plates 42 are provided and arranged in a V-shape. The side of the two sets of limiting plates 42 that are close to each other is connected to the outer wall of the guide steel pipe 41. The guide steel pipe 41 is stably and reliably fixed by the two sets of limiting plates 42 locking the protective cylinder 3.

[0026] In embodiment three, a connecting frame 404 is provided on the top side wall of the guide steel pipe 41, and a movable frame 401 is hinged on the connecting frame 404. A sliding groove is provided on the lower side of the movable frame 401, and a sliding rail 402 is provided on the upper side of the limiting plate 42. There are two sets of movable frames 401, and a spring 403 is provided between them. The movable frame 401 and the limiting plate 42 are detachably connected. The sliding rail 402 and the sliding groove are slidably connected in the horizontal direction, which can change the distance between the guide steel pipe 41 and the limiting plate 42, so as to facilitate the adjustment of the position of the guide steel pipe 41 and adapt to different installation requirements. The spring 403 ensures that the limiting plate 42 elastically clamps the protective cylinder 3. The two sets of limiting plates 42 are set at an acute angle. After the limiting plate 42 is clamped by the spring 403, the sliding between the sliding rail 402 and the sliding groove is limited.

[0027] A protective sleeve is provided inside the limiting slot. The protective sleeve abuts against the protective sleeve 3 to protect the opening of the protective sleeve 3 and prevent damage to the protective sleeve 3.

[0028] After the hole is drilled and accepted, the area around the casing 3 is leveled and compacted. The support platform 1 is placed in the predetermined position, and then the guide component 4 is installed on the four quadrant points of the casing 3. After the guide steel pipe 41 is installed, the steel cage is installed in sections. After all the steel cages are installed, the position of the steel cage is recalibrated through the guide steel pipe 41. After confirming that the requirements are met, the steel cage is fixed. After the concrete is poured, the positioning steel pipe 41 is pulled out by a crane.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0030] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0031] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

Claims

1. A guide device for installing a pile foundation reinforcement cage, comprising a casing (3) and a supporting platform (1), characterized in that, The supporting platform (1) includes I-beams, reinforcing ribs and lifting lugs (5). The I-beams are provided in multiple sets and are arranged in a frame-like enclosure. The distance between the I-beams and the casing (3) is greater than 30 cm. The supporting platform (1) is provided with a steel cage positioning pipe (2). The casing (3) is provided with a guide assembly (4) on its upper side. The guide assembly (4) is provided in at least three sets. The guide assembly (4) includes a guide steel pipe (41), a limiting plate (42) and a lifting ring (43). The lifting ring (43) is welded to the top of the guide steel pipe (41). The limiting plate (42) is located on the outer side of the top of the guide steel pipe (41). The lower side of the limiting plate (42) is provided with a limiting groove that is adapted to the wall of the protective sleeve (3).

2. The pile foundation reinforcement cage installation guide device according to claim 1, characterized in that, The limiting plate (42) is welded to the outer wall of the guide steel pipe (41), and the limiting plate (42) is arranged radially along the guide steel pipe (41).

3. The pile foundation reinforcement cage installation guide device according to claim 1, characterized in that, The limiting plate (42) is provided in two sets and is arranged in a V shape. The side of the two sets of limiting plates (42) that are close to each other is connected to the outer wall of the guide steel pipe (41).

4. The pile foundation reinforcement cage installation guide device according to claim 1, characterized in that, The top side wall of the guide steel pipe (41) is provided with a connecting frame (404), and a movable frame (401) is hinged on the connecting frame (404). The lower side of the movable frame (401) is provided with a sliding groove. The upper side of the limiting plate (42) is provided with a slide rail (402), and the slide rail (402) is slidably connected to the slide groove in the horizontal direction.

5. The pile foundation reinforcement cage installation guide device according to claim 4, characterized in that, The movable frame (401) is provided in two sets, and a spring (403) is provided between them. The movable frame (401) and the limiting plate (42) are detachably connected.

6. A pile foundation reinforcement cage installation guide device according to any one of claims 1 to 5, characterized in that, The limiting slot is provided with a protective sleeve, which abuts against the protective sleeve (3).

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