A fabricated bored pile pile frame fixing device

Abstract

The utility model discloses a kind of fabricated bored pile pile frame fixing devices, it is related to building construction technology field, including two groups of fixing device, each group of fixing device all includes steel sleeper, bracket and roller.The utility model is cooperated by steel sleeper through length guide groove and bracket connecting frame, forms integrated guiding restraint structure, solves the problem of traditional dispersed component displacement when operation is complicated, long period of time, realizes pile frame directional stable movement;The overall load-bearing design of roller and bracket and the accurate positioning of limiting card effectively avoid the risk of roller deviation and escape, improve the safety and positioning accuracy of pile frame displacement, guarantee hole forming quality;Meanwhile, the device can be prefabricated in factory, and quickly assembled on site, reduce manual handling and installation link, significantly improve construction efficiency, meet the demand of modern engineering to efficient, safe, accurate construction.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically to a prefabricated fixed device for the pile frame of bored cast-in-place piles. Background Technology

[0002] During the construction of bored piles, the stable fixing and flexible adjustment of the pile frame are key aspects to ensure construction efficiency and quality. Currently, the commonly used pile frame fixing method in the industry is a combination structure of steel sleepers and rollers. That is, steel sleepers are used as the foundation support, and rollers are used to adjust the displacement of the pile frame. This traditional structure has revealed obvious limitations in long-term practice: steel sleepers and rollers are decentralized components, and each component needs to be moved and installed multiple times when the pile frame is moved. This not only makes the operation process cumbersome, but also leads to excessively long displacement period, which seriously restricts the construction progress.

[0003] Traditional techniques present particularly significant problems during the pile frame positioning stage. When adjusting the drill rod position, a winch is needed to directly drive the drum to move on the steel sleepers. Due to the lack of effective guiding and restraining structures, the drum is prone to displacement or even detachment from the sleepers, posing a significant safety risk of pile frame overturning. At the same time, the positioning accuracy of this adjustment method is extremely low, making it difficult to meet the requirements of high-precision pile construction. This often leads to hole deviations exceeding the standard specifications, affecting the bearing capacity and structural stability of the cast-in-place pile. Furthermore, the multiple handling and installation processes of distributed components further increase labor costs and operational complexity, resulting in a significant gap between these methods and the demands of modern engineering for efficient, safe, and precise construction. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide an assembled bored pile frame fixing device to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an assembled bored pile frame fixing device, comprising two sets of fixing devices, each set of fixing devices including steel sleepers, brackets and rollers;

[0006] The steel sleepers are made of shaped steel and are fixed to the ground by pre-embedded anchor rods. This can transfer the overall load of the device to the foundation and prevent the pile frame from becoming unstable due to the slippage of the steel sleepers during construction. The inner wall of the continuous guide channel is welded with anti-slip and wear-resistant steel plates. The rollers are made of seamless steel pipes, and the top beam end of each set of steel sleepers is movably connected to the rollers through brackets.

[0007] Furthermore, the roller is connected to the bracket via bearings to achieve stable support and rotation adjustment of the pile frame;

[0008] The steel sleeper has a continuous guide groove along its length, and a steel limiter is installed in the continuous guide groove. The limiter is fixed with adjustable bolts, which can control the movement endpoint of the bracket through precise limit control, thereby ensuring the positioning accuracy of the pile frame.

[0009] The bottom of the bracket is fixed with a connecting frame that matches the continuous guide groove, and the connecting frame is embedded in the continuous guide groove and can slide along it. The two ends of the roller are connected to the bracket through bearings. The steel sleepers, the bracket and the roller form an integral load-bearing structure.

[0010] In summary, the present invention has the following main advantages:

[0011] This invention utilizes the combination of a continuous guide groove made of steel sleepers and a bracket connecting frame to form an integrated guiding and constraining structure. This solves the problems of cumbersome operation and long construction period during the displacement of traditional distributed components, achieving directional and stable movement of the pile frame. The overall load-bearing design of the roller and bracket, along with the precise positioning of the limit card, effectively avoids the risk of roller displacement and detachment, improving the safety and positioning accuracy of the pile frame displacement and ensuring the quality of hole formation. At the same time, the device can be prefabricated in the factory and quickly assembled on site, reducing manual handling and installation, significantly improving construction efficiency, and meeting the needs of modern engineering for efficient, safe, and precise construction. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the steel sleeper structure of this utility model;

[0014] Figure 3 This is an enlarged schematic diagram of the bracket structure of this utility model.

[0015] In the diagram: 1. Fixing device; 101. Steel sleeper; 102. Continuous guide groove; 103. Bracket; 104. Roller; 105. Connecting frame; 2. Pile frame. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0017] The embodiments of this utility model will be described below based on its overall structure.

[0018] Example

[0019] like Figure 1-3As shown in the figure, this embodiment provides a prefabricated bored pile frame fixing device, which aims to solve the problems of inconvenient displacement, high operation risk and low positioning accuracy in traditional pile frame fixing methods. Its specific structure and operation process are as follows:

[0020] Steel sleeper 101: Made of Q235 steel, with a length of 6m, a width of 0.8m, and a height of 0.5m. A continuous guide groove 102 is opened in the middle of the steel sleeper 101 along the length direction. Anti-slip and wear-resistant steel plates are welded to the inner side wall of the groove to ensure the stability of the bracket 103 when it moves.

[0021] Roller 104 and bracket 103: Roller 104 is made of seamless steel pipe and is connected to bracket 103 at both ends by bearings. Bracket 103 is a welded steel frame structure. A connecting frame 105 is fixed at the bottom of bracket 103. The size matches the full-length guide groove 102 of steel sleeper 101 and can slide freely along the full-length guide groove 102. Thus, steel sleeper 101, bracket 103 and roller 104 form an integral load-bearing structure that can bear the self-weight of pile frame 2 and construction load.

[0022] Limiting clips and winch assembly: Steel limiting clips are pre-installed in the continuous guide groove 102 of the steel sleeper 101 according to the pile position coordinates measured and positioned before construction. The limiting clips are fixed with adjustable bolts, and the spacing is set according to the displacement accuracy requirements of the pile frame. The minimum spacing can be controlled within 1mm to ensure that the displacement accuracy of the drum 104 reaches the millimeter level. A 5t electric winch is selected and connected to the bracket 103 through a steel wire rope. A tension sensor is installed at the end of the steel wire rope to monitor the traction force in real time and avoid overload that could damage the device.

[0023] Construction operation steps

[0024] Prefabrication and assembly of the device: The steel sleepers 101, rollers 104 and brackets 103 are processed and manufactured in the factory. After being transported to the construction site, the brackets 103 and rollers 104 are assembled into a whole and then embedded into the through guide grooves 102 of the steel sleepers 101 to complete the overall assembly of the device. The assembly time is no more than 2 hours.

[0025] Positioning and fixing of pile frame 2: A 25t truck crane is used to lift the pile frame 2 of the bored pile to the top of the rollers 104 distributed at the four corners, ensuring that the verticality deviation of the pile frame does not exceed 1‰. At this time, the steel sleepers 101 are fixed to the ground by pre-embedded anchor rods to prevent the whole structure from sliding during construction.

[0026] Pile frame 2 displacement adjustment: When it is necessary to adjust the position of pile frame 2, start the winch and pull multiple sets of brackets 103 along the continuous guide groove 102 of steel sleeper 101 by steel wire rope. When it approaches the preset pile position, limit the movement of brackets 103 by limit card. At this time, the displacement error of pile frame 2 can be controlled within ±2mm.

[0027] The entire displacement process requires only one operator to remotely control the winch. The displacement time for a single pile is reduced by about 67% compared to the traditional method. The traditional method takes an average of 30 minutes to displace a single pile, while this device only takes 10 minutes.

[0028] Safety and precision assurance: During the movement of the bracket 103, the constraint of the continuous guide groove 102 can effectively prevent the bracket 103 from falling out and avoid the risk of the pile frame 2 overturning. The precise positioning of the limit card ensures that the center of the drill rod of the pile frame 2 is consistent with the pile position coordinates. According to the on-site measurement, the verticality deviation of the hole is controlled within 0.5‰, and the pass rate of pile quality is improved by more than 20% compared with the traditional process.

[0029] The device and operating method of this embodiment enable rapid, safe, and precise displacement of the bored pile frame, significantly improving construction efficiency and quality. It is applicable to various industrial and civil building bored pile construction scenarios.

[0030] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A prefabricated bored pile frame fixing device, comprising two sets of fixing devices (1), characterized in that: Each of the aforementioned fixing devices (1) includes a steel sleeper (101), a bracket (103), and a roller (104); The steel sleeper (101) has a continuous guide groove (102) in the middle along its length. The bracket (103) has a connecting frame (105) at its bottom that matches the continuous guide groove (102). The connecting frame (105) is embedded in the continuous guide groove (102) and can slide along it. The roller (104) is connected to the bracket (103) at both ends through bearings. The steel sleeper (101), the bracket (103) and the roller (104) form an integral load-bearing structure.

2. The assembled bored pile frame fixing device according to claim 1, characterized in that: The steel sleeper (101) is made of shaped steel, and the inner wall of the through guide groove (102) is welded with a non-slip and wear-resistant steel plate.

3. The assembled bored pile frame fixing device according to claim 1, characterized in that: The roller (104) is made of seamless steel pipe, and the top beam end of each set of steel sleepers (101) is movably connected to the roller (104) through the bracket (103); Furthermore, the roller (104) is connected to the bracket (103) through the bearing to realize the stable support and rotation adjustment function of the pile frame (2).

4. The assembled bored pile frame fixing device according to claim 1, characterized in that: The bracket (103) is a welded steel frame structure, and the bracket (103) is connected to the electric winch by a wire rope, with a tension sensor installed at the end of the wire rope; The tension sensor installed at the end of the wire rope can monitor the traction force in real time to prevent the device from being overloaded, and the bracket (103) can drive the pile frame (2) to achieve directional displacement along the continuous guide groove (102) under the drive of the winch.

5. The assembled bored pile frame fixing device according to claim 1, characterized in that: A steel limit card is installed in the continuous guide groove (102). The limit card is fixed with adjustable bolts, which can control the movement endpoint position of the bracket (103) through precise limit control, thereby ensuring the positioning accuracy of the pile frame (2).

6. The assembled bored pile frame fixing device according to claim 1, characterized in that: The steel sleepers (101) are fixedly connected to the ground by pre-embedded anchor rods, which can transfer the overall load of the device to the foundation and avoid the instability of the pile frame (2) caused by the sliding of the steel sleepers (101) during construction.

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