Auxiliary manufacturing and mounting tool for pile body reinforcement cage

Abstract

An auxiliary manufacturing and installing tool for a pile body reinforcement cage comprises a round core plate (1) and is characterized in that the round core plate (1) is a round steel plate, a concentric outer ring is arranged on the periphery of the round core plate, a plurality of movable small rings are arranged on the outer ring, and a plurality of telescopic rods which are correspondingly arranged in the radial direction are arranged between the round core plate and the outer ring; the telescopic rod is provided with a first section of telescopic rod and a second section of telescopic rod which are connected with each other, one end of the first section of telescopic rod is fixedly connected with the round core plate, one end of the second section of telescopic rod is provided with jacking iron, the jacking iron is connected with a movable small ring, and the movable small ring is provided with a screw thread for fixing. The auxiliary manufacturing and installing tool for the pile body reinforcement cage has the advantages of being simple in structure, convenient to manufacture, capable of improving the manufacturing efficiency of the pile body reinforcement cage, saving the using amount of measure reinforcing steel bars and reducing labor cost and material cost.

Description

Technical Field

[0001] The utility model relates to a pile body reinforcement cage manufacturing method, in particular to a pile body reinforcement cage auxiliary manufacturing and installation tool. Background Art

[0002] Pile foundation technology is an integral part of construction engineering, widely used in addressing adverse geological conditions, high-rise buildings, and large structures. Pile foundations improve the safety and stability of buildings and structures by transferring loads to deeper, more stable soil or rock layers. Based on their function, pile foundations are categorized as ground treatment piles and pile foundations. Based on their construction process, they are further categorized as bored piles, bored piles, precast piles, mixing piles, and compaction piles.

[0003] In coke oven projects, due to the often insufficient bearing capacity of the existing foundations for tall structures such as the oven itself, chimneys, and coal towers, pile foundations are often required. Bored and cast-in-place piles are the most widely used method. The overall steps for bored and cast-in-place piles are: site preparation → positioning and setting out → casing installation → pile driver assembly and positioning → reinforcement cage fabrication and installation → conduit installation → underwater concrete pouring → conduit and casing removal. The purpose of this patent is to control and optimize the "rebar cage fabrication and installation" process.

[0004] In the Maanshan Iron and Steel Coke Oven Off-site Overhaul and Upgrade Project, bored cast-in-place pile foundations were designed for the coke oven body, coal tower, desulfurization and denitrification, chimney, and other structural units. The project site maintained strict quality control, with oversight and control at every stage, from the acceptance of incoming raw materials to processing, installation, concrete pouring, and testing. Early in construction, it was discovered that after the pile reinforcement cages were manufactured, numerous quality issues existed, such as diameter deviations and uneven spacing between the main bars. To address these quality issues, the entire process, from raw materials to processing, was tracked and monitored, revealing numerous areas for improvement in the original construction method. The original method involved welding two rings of round steel, inserting the main bars, spot-welding them to the two rings at each end, and then welding the pile body to form the circular reinforcement. The disadvantages of this method were the need to process the reinforcement rings each time, diameter deviations due to processing variations, uneven distribution of the main bars, and slow processing by workers.

[0005] Therefore, the known pile body reinforcement cage manufacturing method has the above-mentioned various inconveniences and problems. Utility Model Content

[0006] The purpose of the utility model is to provide a safe and reliable auxiliary manufacturing and installation tool for pile body reinforcement cage.

[0007] To achieve the above objectives, the technical solution of the present invention is:

[0008] A pile reinforcement cage auxiliary production and installation tool, including a round core plate, is characterized by:

[0009] The circular core plate is a circular steel plate, and a concentric outer ring is provided on the periphery of the circular core plate, and a plurality of movable small rings are provided on the outer ring. A plurality of corresponding radially arranged telescopic rods are provided between the circular core plate and the outer ring. The telescopic rods are provided with a first telescopic rod and a second telescopic rod connected to each other. One end of the first telescopic rod is fixedly connected to the circular core plate, and one end of the second telescopic rod is provided with a top iron, which is connected to the movable small ring, and the movable small ring is provided with a thread for fixing.

[0010] The auxiliary manufacturing and installation tool for the pile body reinforcement cage of the present invention can also be further implemented by adopting the following technical measures.

[0011] The aforementioned pile body reinforcement cage auxiliary production and installation tool, wherein the circular steel plate is a steel plate with a thickness of ≥20mm and a diameter of ≥150mm.

[0012] After adopting the above technical solution, the pile body reinforcement cage auxiliary production and installation tool of the utility model has the following advantages:

[0013] 1. The tool has a simple structure and is easy to make;

[0014] 2. Improve the production efficiency of pile reinforcement cage and save the amount of reinforcement;

[0015] 3. Reduce labor costs and material costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the tool structure of an embodiment of the utility model;

[0017] Figure 2 for Figure 1 Cross-sectional view of AA in the figure.

[0018] In the figure: 1 round core plate, 2 first section of telescopic rod, 3 second section of telescopic rod, 4 telescopic rod tightening screw, 5 telescopic rod end top iron, 6 contraction adjustment large ring, 7 adjustment large ring fixing screw buckle, 8 movable small ring, 9 small ring fixing thread buckle. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the embodiments and the accompanying drawings.

[0020] Example 1

[0021] The Maanshan Iron and Steel Coke Oven Off-site Overhaul and Upgrade Project involves two 50-hole, 7-meter-long top-loading coke ovens and their supporting facilities. 512 piles were installed for the coke oven's foundation, 114 for the oven's flue, 37 for the end platform, and 104 for the coke pusher's foundation. All piles were bored and cast-in-place, with diameters of 600mm and 800mm. The end platform piles were 13m long, while the remaining piles were mostly 18m long. The pile cages consisted primarily of four types of steel bars: longitudinal main bars, external spiral stirrups, internal annular stirrups, and cross bars. The bars came in three sizes: 16mm, 8mm, and 14mm, with a 50mm protective layer.

[0022] The construction process of bored cast-in-place piles: site leveling → construction preparation → acceptance of materials and equipment arriving at site → material inspection → positioning and setting out → pile foundation in place → burying casing → drilling with drilling rig → hole cleaning → processing and manufacturing of steel cage → acceptance of steel cage → hoisting of steel cage → insertion of guide tube → extension of guide tube → delivery of ready-mixed concrete → retention of test blocks for slump inspection → underwater concrete pouring → removal of guide tube and casing → pile completion → testing and inspection.

[0023] The conventional manufacturing and installation process of the pile body reinforcement cage is as follows: bend and weld two internal annular stirrups, two people manually operate to make the main reinforcement of the pile body close to the annular stirrups, and spot weld the main reinforcement and annular stirrups in sequence. After the main reinforcement is installed, weld and install the internal annular stirrups, then wrap and weld the external spiral stirrups, install the internal cross steel bars, and finally the reinforcement cage is formed.

[0024] Please refer to Figure 1 and Figure 2 The utility model is an auxiliary installation tool for the pile body reinforcement cage. The principle is that it is an auxiliary installation tool composed of "an internal fixed support plus a retractable and adjustable large ring, and a movable and fixed small buckle installed on the large ring".

[0025] The manufacturing method of the auxiliary manufacturing and installation tool of the pile body reinforcement cage of the utility model:

[0026] In the first step, a 20 mm thick steel plate is cut into a circular steel plate with a diameter of 150 mm to make a circular core plate 1.

[0027] The second step is to use a φ20*3mm steel pipe, cut it into 377mm long sections and cut it into six sections in total to make the first section 2 of the telescopic rod. Then, mark the welding position of the standard first section of the telescopic rod on the circular core plate, and weld the first section of the telescopic rod evenly and equidistantly according to the marked position on the circular core plate.

[0028] The third step is to use 12mm diameter round steel to cut into 300mm long sections, a total of six sections, to make the second section 3 of the telescopic rod, and draw 0-200mm scale lines on the second section of the telescopic rod in mm.

[0029] The fourth step is to open a 6mm threaded hole on one side of the first telescopic rod 2 at a position 30mm away from the outer end, so as to install the telescopic rod tightening screw 4 to fix the adjusted second telescopic rod 3.

[0030] The fifth step is to cut the 10mm thick steel plate into 20*50mm rectangular strips, cut six pieces to make the telescopic rod end top iron 5, and then weld the telescopic rod end top iron to the outer end of the telescopic rod second section 3.

[0031] The sixth step is to use 6mm round steel with good toughness to process it into a circle with a diameter of 800mm. The two ends are closed into circles but not welded to fix them, retaining the adjustment capability to make a shrinkage adjustment ring 6.

[0032] The seventh step is to insert the two holes of the adjusting ring fixing screw buckle 7 into the two ends of the contraction adjusting ring 6, then adjust the diameter to the appropriate level, tighten the screws to fix it into a circle, and then install the circle on the adjusted and matched telescopic adjusting rod, and support the ring through the top iron at the end of the telescopic rod.

[0033] The eighth step is to install the movable small ring 8 on the shrinkage adjustment large ring 6. The movable small ring is connected with the small ring fixing thread 9 in combination for use. It is connected by a screw clamp and a vertical cylinder. It mainly plays the role of determining the position of the pile main reinforcement and fixing the pile main reinforcement.

[0034] The construction operation and use method of the utility model's pile body reinforcement cage auxiliary production and installation tool:

[0035] (1) Process two steel bar supports, which are welded with φ25mm steel bars and used to support the pile body steel cage at both ends to assist in the production of installation tools.

[0036] (2) Make sure the ground is flat, the top elevations of the steel support brackets at both ends should be consistent, and the center support points should be aligned.

[0037] (3) Adjust and fix the size of the telescopic rod, adjust and fix the spacing between the movable small rings, and divide them evenly according to the number of steel bars. The number of small rings can be increased or decreased according to the number of main bars.

[0038] (4) Place the adjusted pile body reinforcement cage auxiliary production and installation tools on the reinforcement bracket, and make sure they are firmly fixed.

[0039] (5) Insert the main reinforcement of the pile into the small ring one by one. After the main reinforcement is installed, install the internal cross reinforcement and internal ring reinforcement. Finally, install the spiral stirrups on the outside by wrapping and welding. During the installation of the reinforcement, pay attention to strictly follow the size and spacing of the drawing.

[0040] (6) After the steel cage is formed, it is hoisted with a crane. The auxiliary tools for making and installing the steel cage on both sides of the pile body are slowly pulled out.

[0041] (7) The steel cages are stacked in the finished product area for standby use, the auxiliary manufacturing and installation tools for the pile body steel cages are in place, and the manufacturing and installation of the next pile body steel cage is continued.

[0042] (8) Depending on the pile diameter, the telescopic rod and the external shrink ring can be adjusted to correspond to the corresponding pile diameter size.

[0043] (9) Recyclable production.

[0044] This utility model has substantial characteristics and significant technological advancements. The utility model is a tool for auxiliary production and installation of pile body reinforcement cages. The diameter can be flexibly adjusted and used, and the production is convenient. This helps to ensure quality and improve efficiency. It can be used in a turnover manner and saves reinforcement materials. Compared with the existing technology, the advantages or positive effects are mainly reflected in the following aspects:

[0045] 1. It effectively ensures the quality of the finished product of the pile body reinforcement cage, and the process is conducive to quality control, which improves the first-time pass rate after installation.

[0046] 2. Improve the production efficiency of the pile body reinforcement cage, save the amount of measure steel bars, and reduce labor costs and material costs.

[0047] 3. The tool is simple to manufacture and easy to operate. It can be used on site for various bored piles and can adjust the length of the telescopic rod according to the different pile diameters, which can be widely used and promoted.

[0048] The utility model's auxiliary production and installation tool for the pile body reinforcement cage has been successfully used in the off-site large-scale upgrade and renovation project of Ma Steel's coke ovens. It has effectively improved the qualification rate of bored pile production, increased installation efficiency and shortened construction period, and at the same time facilitated inspections by supervisors, owners and other parties. Through good implementation results, it has received unanimous praise from all parties.

[0049] The above embodiments are intended only to illustrate the present invention and are not intended to limit the present invention. Persons skilled in the art may make various modifications or variations without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions are intended to fall within the scope of the present invention and are defined by the claims.

Claims

1. A pile body reinforcement cage auxiliary production and installation tool, comprising a round core plate (1), characterized in that: The circular core plate (1) is a circular steel plate. A concentric outer ring is provided on the periphery of the circular core plate (1). A plurality of movable small rings are provided on the outer ring. A plurality of corresponding radially arranged telescopic rods are provided between the circular core plate (1) and the outer ring. The telescopic rods are provided with a first telescopic rod (2) and a second telescopic rod (3) connected to each other. One end of the first telescopic rod (2) is fixedly connected to the circular core plate (1). One end of the second telescopic rod (3) is provided with a top iron (5). The top iron (5) is connected to the movable small ring (8). The movable small ring (8) is provided with a thread (9) for fixing.

2. The pile body reinforcement cage auxiliary production and installation tool according to claim 1, characterized in that: The circular steel plate is a steel plate with a thickness of ≥20 mm and a diameter of ≥150 mm.

3. The pile body reinforcement cage auxiliary production and installation tool according to claim 1, characterized in that: The circular core plate (1) is connected to the first telescopic rod (2), the second telescopic rod (3) and the end top iron (5) as a whole.

4. The pile body reinforcement cage auxiliary production and installation tool according to claim 1, characterized in that: The contraction adjustment large ring (6) and the movable small ring (8) can be detachably installed or fixed for movable adjustment.

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