Embedded pile casing and pile foundation reinforcement cage connecting and positioning device

Abstract

The connecting and positioning device for the embedded pile casing and the pile foundation reinforcement cage comprises a plurality of arc-shaped connecting bodies, and the two ends of each connecting body are provided with a protrusion and an inserting groove which extend outwards respectively. The adjacent connecting bodies are combined through the protrusions and the inserting grooves to form a positioning ring matched with the pile foundation reinforcement cage in appearance, and a carrier roller is rotationally arranged in the middle of each connecting body. The positioning device is installed at the top of a hole formed by a cast-in-situ bored pile, the outer edge face of the reinforcement cage abuts against the surface of the carrier roller in the lowering process, the collimation and correction effect on the reinforcement cage can be achieved, it is guaranteed that the center of the reinforcement cage cannot deviate in the lowering process, the accuracy of the lowering position of the reinforcement cage is improved, and the production efficiency is improved. And the bearing capacity, stability and service life of the pile foundation are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of pile foundation construction, and more specifically to a connection and positioning device for a pre-buried casing and a pile foundation reinforcement cage. Background Art

[0002] Pile foundation construction is one of the important construction steps in the bridge construction process. The pile foundation is a foundation component set vertically in the soil. Its function is to transfer the dynamic and static loads borne by the pile top to a harder, denser or less compressible foundation bearing layer to meet the requirements of bearing capacity and settlement.

[0003] At present, the construction of pile foundation usually includes the following construction steps: burying steel casing, drilling, cleaning holes, lowering steel cage, installing conduit, pouring concrete, etc. The top of the steel casing is usually about 0.3m above the ground, and the top elevation of the pile foundation is generally about 1.5m below the ground.

[0004] The lowering and installation of the steel cage is the most important, troublesome and time-consuming link in the construction process of bored piles. At present, when construction workers lower the steel cage, they usually use a crane to lower the steel cage into the steel casing, and roughly adjust the position of the steel cage based on the construction workers' own operating experience to complete the lowering of the steel cage. However, the center position of the steel cage after lowering is highly random, and it is difficult to keep it consistent with the center of the steel casing, which easily leads to the deviation of the steel cage. The most frequent problem in the construction process is inaccurate centering. Due to the heavy weight of the steel cage, the operators cannot adjust the steel cage that has been lowered to a certain depth. Although the crane can be adjusted by swinging the boom, the accuracy is too low. If the swing amplitude is too large, it will collide with the hole wall and even cause the hole to collapse.

[0005] Moreover, the holes formed by bored cast-in-place piles are not as smooth and vertical as designed. If there is any deviation during the lowering of the steel cage, it is easy for problems such as getting stuck may occur. Moreover, the steel cage is generally connected in multiple sections. Even if the lower part is accurately aligned and lowered smoothly, deviations may occur during the lowering of the upper connection. Utility Model Content

[0006] The utility model provides a connection and positioning device for a pre-buried casing and a pile foundation steel cage, so as to solve the problem that the existing steel cage is prone to deflection after being lowered, resulting in low accuracy of the steel cage lowering position, affecting the bearing capacity, stability and service life of the pile foundation.

[0007] According to one aspect of the utility model, a connection and positioning device for an embedded casing and a pile foundation reinforcement cage is provided, comprising a plurality of arc-shaped connectors, both ends of which are respectively provided with outwardly extending protrusions and slots; adjacent connectors are connected by combining the protrusions and the slots to form a positioning ring adapted to the shape of the pile foundation reinforcement cage, and a roller is rotatably provided in the middle of each connector.

[0008] Preferably, based on the above scheme, there are four connectors.

[0009] Preferably, based on the above solution, the protrusion and the slot on the connecting body on the same side are arranged in a staggered manner.

[0010] Preferably, based on the above scheme, a slot is provided in the middle of the connector, an arc-shaped mounting shaft is provided on the inner side surface of the slot, and the roller is rotatably mounted on the mounting shaft.

[0011] Preferably, based on the above solution, the surface of the roller is provided with an anti-slip layer.

[0012] The utility model discloses a positioning device for connecting a pre-buried casing with a pile foundation reinforcement cage. By installing the positioning device of the present application at the top of the hole formed by the bored cast-in-place pile, during the lowering process, the outer edge surface of the reinforcement cage contacts the surface of the roller, thereby achieving an alignment and correction effect thereon, so as to ensure that the reinforcement cage will not have the problem of center deviation during the lowering process, thereby improving the accuracy of the reinforcement cage lowering position and ensuring the bearing capacity, stability and service life of the pile foundation.

[0013] On the other hand, due to its modular design, it is easy to use and install, and it does not take up space when stored and carried. After installation, it can accurately center the casing and the steel cage installation, and can be installed and adapted to piles of different sizes, with a high reuse rate. The roller assists the lowering of the steel cage to ensure a smooth and vertical installation process, which improves the construction speed and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following is a brief introduction to the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0015] Figure 1 It is a schematic diagram of the installation structure of the pre-buried casing and the pile foundation steel cage connection positioning device of the utility model;

[0016] Figure 2 It is a bottom view of the connection and positioning device of the embedded casing and the pile foundation reinforcement cage of the utility model;

[0017] Figure 3 For the utility model Figure 2 A magnified view of part A;

[0018] Description of Figure Numbers:

[0019] Connecting body 1, positioning ring 10, protrusion 11, slot 12, roller 13, clamping groove 14, installation shaft 15. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0021] It should be understood that when used in this specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or collections.

[0022] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0023] It should be further understood that the term “and / or” used in the specification and appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0024] In the embodiments shown in the drawings, the directions (such as up, down, left, right, front and back) used to explain the structure and movement of the various components of the present invention are not absolute but relative. These descriptions are appropriate when the components are in the positions shown in the drawings. If the description of the positions of the components changes, the directions also change accordingly.

[0025] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0027] See also Figure 1 , and combined with Figure 2 and Figure 3As shown, a device for connecting and positioning a pre-buried casing and a pile foundation reinforcement cage of the utility model comprises a plurality of arc-shaped connectors 1, both ends of which are respectively provided with outwardly extending protrusions 11 and slots 12; adjacent connectors 1 are connected by the combination of the protrusions 11 and the slots 12 to form a positioning ring 10 adapted to the shape of the pile foundation reinforcement cage, and a roller 13 is rotatably provided in the middle of each connector 1.

[0028] When in use, multiple connectors 1 can be combined according to the diameter of the pile foundation steel cage and the embedded casing. The positioning device can be combined by combining the protrusion 11 and the slot 12 to form a positioning ring 10 that is adapted to the shape of the pile foundation steel cage. When the steel cage is inserted, the outer edge of the steel cage contacts the roller 13 to achieve the correction of its position.

[0029] When not in use, the protrusion 11 can be pulled out from the slot 12 to achieve modular storage, which is convenient and quick to use and carry.

[0030] There are four connectors 1 in the present invention. It should be noted that the protrusions 11 and slots 12 on the same side of the connector 1 are staggered, that is, the midlines of the protrusions 11 and slots 12 on the same side are staggered, and the positions of the protrusions 11 and slots 12 on the same side in the thickness direction are also different.

[0031] Specifically, a slot 14 is provided in the middle of the connector 1 of the utility model, an arc-shaped mounting shaft 15 is provided on the inner side of the slot 14, and a roller 13 is rotatably mounted on the mounting shaft 15. Preferably, a non-slip layer is provided on the surface of the roller 13.

[0032] The utility model provides a positioning device for connecting a pre-buried casing and a pile foundation steel cage. By installing the positioning device of the present application at the top of the hole formed by the bored cast-in-place pile, during the lowering process, the outer edge surface of the steel cage abuts against the surface of the roller 13, which can achieve an alignment and correction effect on the steel cage to ensure that the steel cage will not have a center offset problem during the lowering process, improve the accuracy of the steel cage lowering position, and ensure the bearing capacity, stability and service life of the pile foundation.

[0033] On the other hand, due to the modular design, it is easy to use, easy to install, and does not take up space when stored and carried. After installation, it can accurately center the casing and the steel cage installation, and can be installed and adapted to piles of different sizes, with a high reuse rate. The roller 13 assists the lowering of the steel cage to ensure a smooth and vertical installation process, which improves the construction speed and quality.

[0034] Finally, the method of this application is only a preferred implementation scheme and is not intended to limit the protection scope of the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A device for connecting and positioning a pre-buried casing and a pile foundation reinforcement cage, characterized in that: It includes a plurality of arc-shaped connectors, both ends of which are respectively provided with outwardly extending protrusions and slots; adjacent connectors are connected by the combination of the protrusions and the slots to form a positioning ring adapted to the shape of the pile foundation steel cage, and a roller is rotatably provided in the middle of each connector.

2. A pre-buried casing and pile foundation reinforcement cage connection positioning device as claimed in claim 1, characterized in that: There are four connectors.

3. A pre-buried casing and pile foundation reinforcement cage connection and positioning device as claimed in claim 1, characterized in that: The protrusion and the slot on the connecting body on the same side are arranged in a staggered manner.

4. A pre-buried casing and pile foundation reinforcement cage connection and positioning device as claimed in claim 1, characterized in that: A clamping groove is arranged in the middle of the connecting body, an arc-shaped installation shaft is arranged on the inner side surface of the clamping groove, and the supporting roller is rotatably mounted on the installation shaft.

5. A pre-buried casing and pile foundation reinforcement cage connection and positioning device as claimed in claim 4, characterized in that: The surface of the roller is provided with an anti-skid layer.

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