Positioning support for preventing floating of reinforcement cage of cast-in-place pile

Abstract

The utility model relates to a kind of positioning support for preventing floating of bored pile reinforcement cage, including the positioning sleeve for locking reinforcement cage and the fixed rod for locking positioning sleeve, and positioning sleeve upper and lower port is closed arrangement, and positioning sleeve side is equipped with several pairs of sliding clamping plate, and the transverse reinforcement of reinforcement cage is fixed by a pair of clamping plate upper and lower clamping, and positioning sleeve is equipped with the manual mechanism of driving clamping plate sliding, and positioning sleeve outer wall upper portion is connected with moving sleeve, and moving sleeve outer wall is rotatably connected with rotating ring, and rotating ring side is fixedly connected with snap ring, and fixed rod end is equipped with fixed mechanism, and fixed rod passes through snap ring and is arranged in aperture and is fixed by fixed mechanism.The utility model whole structure is simple, and manufacturing cost is low, and it is easy to operate, and installation and adjustment can be completed without complex tool, and construction efficiency and quality are significantly improved.

Description

Technical Field

[0001] This utility model relates to the field of cast-in-place pile construction technology, and in particular to a positioning bracket for preventing floating of cast-in-place pile reinforcement cages. Background Technology

[0002] In the construction of cast-in-place piles, the positioning of the reinforcing cage is a crucial step in ensuring the quality of the pile foundation. Due to the buoyancy generated during concrete pouring, the reinforcing cage is prone to floating, leading to quality problems such as insufficient protective layer thickness of the pile reinforcement and reduced bearing capacity. Current technologies often employ welding, support blocks, or simple binding to prevent the reinforcing cage from floating. However, these methods have the following drawbacks: welding is cumbersome and can easily damage the reinforcing steel; support blocks are prone to displacement and lack secure fixation; and simple binding is inconvenient to adjust and cannot adapt to different hole diameters and geological conditions. Therefore, there is an urgent need for a simple, reliable, easy-to-install, and adjustable anti-floating positioning bracket. Summary of the Invention

[0003] This utility model aims to address the shortcomings of existing technologies by providing a positioning bracket for preventing the floating of cast-in-place pile reinforcement cages.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a positioning bracket for preventing floating of a cast-in-place pile reinforcement cage, comprising a positioning sleeve for locking the reinforcement cage and a fixing rod for locking the positioning sleeve. The upper and lower ends of the positioning sleeve are closed. Several pairs of opposing sliding clamps are provided on one side of the positioning sleeve. The transverse reinforcement of the reinforcement cage is clamped and fixed by a pair of clamps. The positioning sleeve is provided with a manual mechanism for driving the clamps to slide. A movable sleeve is threaded to the upper part of the outer wall of the positioning sleeve. A rotating ring is rotatably connected to the outer wall of the movable sleeve. A retaining ring is fixed to one side of the rotating ring. A fixing mechanism is provided at the end of the fixing rod. The fixing rod passes through the retaining ring and is locked at the hole opening and fixed by the fixing mechanism.

[0005] Specifically, the manual mechanism includes a lead screw rotatably connected to the axis of the positioning sleeve, several movable blocks threaded onto the lead screw and slidably connected to the inner wall of the positioning sleeve, one side of the movable block protruding from the positioning sleeve and fixedly connected to the clamping plate, the positioning sleeve having a groove corresponding to the protruding end of the movable block, and a handwheel for driving the lead screw to rotate at the top of the positioning sleeve.

[0006] In particular, a stop is provided on the side of the pair of clamps facing away from the positioning sleeve.

[0007] Specifically, the fixing mechanism includes several mounting holes at the ends of the fixing rods, which are fixed to a hard surface by bolts or to a soft surface by steel rods.

[0008] The beneficial effects of this utility model are:

[0009] By setting up opposing sliding clamps and a manual drive mechanism, the transverse reinforcing bars of the steel cage can be quickly and firmly clamped, effectively resisting the buoyancy force during concrete pouring and preventing the steel cage from shifting. The clamps are equipped with stops, which further enhances the stability of the clamping and prevents the reinforcing bars from slipping off under vibration or external force, thus improving safety and reliability.

[0010] The movable sleeve and rotating ring design on the outer wall of the positioning sleeve allows the fixing rod to be flexibly adjusted in height and horizontal direction to adapt to the hole of the cast-in-place pile; at the same time, the fixing mechanism at the end of the fixing rod can be fixed with bolts or steel pins through the mounting holes, which is suitable for hard ground (such as concrete) or soft ground (such as soil), with strong versatility and convenient installation.

[0011] This utility model has a simple overall structure, low manufacturing cost, and is easy to operate. It can be installed and adjusted without complicated tools, which significantly improves construction efficiency and quality. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the installation of the positioning sleeve and the reinforcing cage of this utility model;

[0013] Figure 2 This is a schematic diagram of the installation of the fixing rod of this utility model;

[0014] Figure 3 This is a schematic diagram of the manual mechanism structure of this utility model;

[0015] Figure 4 This is a schematic diagram showing the connection between the clamping plate and the moving block of this utility model;

[0016] In the diagram: 1-Positioning sleeve; 2-Fixing rod; 3-Clamping plate; 4-Moving sleeve; 5-Rotating ring; 6-Snap ring; 7-Screw rod; 8-Moving block; 9-Slide groove; 10-Handwheel; 11-Stop block; 12-Mounting hole;

[0017] The following will describe in detail the embodiments of this utility model with reference to the accompanying drawings. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0019] like Figures 1-4 As shown, a positioning bracket for preventing floating of a cast-in-place pile reinforcement cage includes a positioning sleeve 1 for locking the reinforcement cage and a fixing rod 2 for locking the positioning sleeve 1. The number of positioning sleeves 1 and fixing rods 2 can be selected as needed.

[0020] The upper and lower ends of the positioning sleeve 1 are closed. Several pairs of opposing sliding clamps 3 are provided on one side of the positioning sleeve 1. The transverse steel bars of the steel cage are clamped and fixed by a pair of clamps 3. This clamping method uses mechanical force to directly act on the steel bars, and the steel cage has good stability.

[0021] The positioning sleeve 1 is equipped with a manual mechanism for driving the clamping plate 3 to slide. The manual mechanism includes a lead screw 7 rotatably connected to the axis of the positioning sleeve 1, and several movable blocks 8 threadedly connected to the lead screw 7 and slidably connected to the inner wall of the positioning sleeve 1. One side of the movable block 8 protrudes from the positioning sleeve 1 and is fixedly connected to the clamping plate 3. The positioning sleeve 1 is provided with a sliding groove 9 corresponding to the protruding end of the movable block 8. The top of the positioning sleeve 1 is provided with a handwheel 10 for driving the lead screw 7 to rotate. By rotating the handwheel 10, the lead screw 7 is rotated, causing the movable block 8 to move along the axis of the lead screw, thereby driving the clamping plate 3 to slide in opposite directions. This mechanism is simple and labor-saving to operate, and construction personnel can quickly complete the clamping or loosening action. The clamping force is adjustable, and the position of the clamping plate 3 can be precisely controlled by controlling the rotation angle of the handwheel to adapt to steel bars of different diameters. The mechanism has a compact structure, with all transmission components built-in, avoiding external interference and damage.

[0022] Furthermore, a stop block 11 is provided on the opposite side of the pair of clamping plates 3 away from the positioning sleeve 1. The design of the stop block 11 increases the contact area between the clamping plate 3 and the reinforcing bar, and forms a mechanical limit after clamping, effectively preventing the reinforcing bar from slipping off under the action of construction vibration or buoyancy, and further improving the reliability and safety of clamping.

[0023] A movable sleeve 4 is threadedly connected to the upper part of the outer wall of the positioning sleeve 1. The movable sleeve 4 can move up and down along the outer wall of the positioning sleeve 1, and its height can be adjusted by rotation to adapt to the installation requirements of steel cages of different depths. A rotating ring 5 is rotatably connected to the outer wall of the movable sleeve 4. A retaining ring 6 is fixedly connected to one side of the rotating ring 5. A fixing mechanism is provided at the end of the fixing rod 2. The fixing rod 2 passes through the retaining ring 6 and is locked at the hole and fixed by the fixing mechanism. The rotating ring 5 allows the fixing rod 2 to rotate 360° in the horizontal direction, so that the fixing rod 2 can be flexibly aligned with the hole or the ground fixing point, which greatly improves the adaptability and convenience of installation.

[0024] The fixing mechanism includes several mounting holes 12 located at the ends of the fixing rod 2. The rod is fixed to a hard surface by bolts inserted into the mounting holes 12 or to a soft surface by steel rods inserted into the mounting holes 12. This versatile fixing method allows the positioning bracket to be used in various geological conditions and construction environments, enhancing the product's versatility and practicality.

[0025] When this utility model is in operation, firstly, the positioning sleeve 1 is lowered into the reinforcing cage, and then the positioning sleeve 1 is rotated so that the clamping plate 3 is located between the upper and lower transverse reinforcing bars of the reinforcing cage. The clamping plate 3 is adjusted to a suitable clamping force by rotating the handwheel 10 so that it clamps the transverse reinforcing bars of the reinforcing cage. Then, the height of the moving sleeve 4 and the angle of the rotating ring 5 are adjusted so that the fixing rod 2 passes through the retaining ring 6 and is locked at the opening. Finally, according to the ground conditions, bolts or steel chisels are selected to fix the fixing rod 2 to the ground through the mounting hole 12.

[0026] The entire installation process is simple and quick, and the fixing is reliable, which can effectively prevent the steel cage from floating during the concrete pouring process and ensure the quality of pile foundation construction.

[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or direct application to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A positioning bracket for preventing floating of a cast-in-place pile reinforcement cage, characterized in that, It includes a positioning sleeve (1) for locking the reinforcing cage and a fixing rod (2) for locking the positioning sleeve (1). The upper and lower ends of the positioning sleeve (1) are closed. Several pairs of opposing sliding clamps (3) are provided on one side of the positioning sleeve (1). The transverse reinforcing bars of the reinforcing cage are clamped and fixed by a pair of clamps (3). The positioning sleeve (1) is provided with a manual mechanism to drive the clamps (3) to slide. A movable sleeve (4) is threaded to the upper part of the outer wall of the positioning sleeve (1). A rotating ring (5) is rotatably connected to the outer wall of the movable sleeve (4). A retaining ring (6) is fixed to one side of the rotating ring (5). A fixing mechanism is provided at the end of the fixing rod (2). The fixing rod (2) passes through the retaining ring (6) and is locked at the opening and fixed by the fixing mechanism.

2. The anti-floating positioning bracket for the reinforcing cage of a cast-in-place pile according to claim 1, characterized in that, The manual mechanism includes a lead screw (7) rotatably connected to the axis of the positioning sleeve (1), and several movable blocks (8) threadedly connected to the lead screw (7) and slidably connected to the inner wall of the positioning sleeve (1). One side of the movable block (8) extends out of the positioning sleeve (1) and is fixedly connected to the clamping plate (3). The positioning sleeve (1) is provided with a groove (9) corresponding to the end of the movable block (8) extending out. The top of the positioning sleeve (1) is provided with a handwheel (10) that drives the lead screw (7) to rotate.

3. The anti-floating positioning bracket for the reinforcing cage of a cast-in-place pile according to claim 1, characterized in that, A stop (11) is provided on the opposite side of a pair of clamps (3) away from the positioning sleeve (1).

4. The anti-floating positioning bracket for the reinforcing cage of a cast-in-place pile according to claim 1, characterized in that, The fixing mechanism includes several mounting holes (12) provided at the end of the fixing rod (2). The mounting holes (12) are fixed to the hard ground by bolts or to the soft ground by steel rods.

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