Steel bar hanging device suitable for large-diameter super-long steel reinforcement cage

Abstract

The steel bar hanging device comprises the steel bar cage, a plurality of transfer beams are arranged on the steel bar cage, the transfer beams are made of double-spliced I-shaped steel, stiffening plates are arranged at the positions of inner webs and outer webs, straight thread steel bar preformed holes are formed in the two ends of the center line of each transfer beam, and the straight thread steel bar preformed holes are formed in the center line of each transfer beam. A finish rolling deformed steel bar preformed hole is formed in the middle of the transfer beam, a straight deformed steel bar hanging bar is installed on the inner side of the straight deformed steel bar preformed hole, a finish rolling deformed steel bar hanging bar is installed on the inner side of the finish rolling deformed steel bar preformed hole, one end of the finish rolling deformed steel bar hanging bar penetrates through the finish rolling deformed steel bar preformed hole, and the other end of the finish rolling deformed steel bar hanging bar penetrates through the finish rolling deformed steel bar preformed hole. According to the utility model, the flat nut of the finish rolling deformed steel bar, the mechanical connecting sleeve and the connecting piece are all inspected in batches, the welding quality of an intersection site is better guaranteed, the working efficiency is greatly improved through mechanical connection, and in addition, the device does not need to be disassembled after being mounted with a lifting appliance.

Description

Technical Field

[0001] The utility model relates to the technical field of hoisting large-diameter and extra-long pile foundation steel bar cages in bridge engineering, in particular to a steel bar hoisting device suitable for large-diameter and extra-long steel bar cages. Background Art

[0002] Conventional pile foundation steel cages in bridge engineering use steel bars with the same specifications as the main bars as hangers, usually 4 hangers. The length of the hangers is calculated before the steel cage is fixed, one end of the hanger is welded to the main bar on site, and the other end is fixed to the hanger. The hangers are cut off after the initial setting of the concrete. However, this conventional method may encounter the following problems when used on large-diameter and overweight steel cages:

[0003] 1. The quality of on-site welding is not high, and the weld may be de-welded when the hanger is stressed;

[0004] 2. The four hangers may be subjected to three-point stress during hoisting. The tensile strength of the hangers does not meet the weight requirement of the steel cage, resulting in the breakage of the hangers.

[0005] 3. If more hangers are added, the connection points between the hangers and the slings will also increase, and the efficiency of on-site installation of the hangers will be reduced.

[0006] 4. The special hanger and the hanging rod should be reliably connected. If the hanging rod is replaced once for each pile foundation, the risk and cost of the hanging rod connection will increase, and the efficiency of the hanging rod installation will also be reduced;

[0007] Therefore, those skilled in the art provide a suspension rod device suitable for large-diameter and ultra-long steel cages to solve the problems raised in the above-mentioned background technology. Utility Model Content

[0008] The utility model aims to solve the shortcomings in the prior art and proposes a reinforcement hanging device suitable for large-diameter and extra-long reinforcement cages.

[0009] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0010] A rebar hanging device suitable for large-diameter and extra-long rebar cages comprises a rebar cage, wherein a plurality of conversion beams are arranged on the rebar cage, the conversion beams are made of double-pieced I-beams, and stiffening plates are arranged at the inner and outer webs, straight threaded rebar reserved holes are opened at both ends of the center line of the conversion beam, a fine-rolled rebar reserved hole is opened in the middle of the conversion beam, a straight threaded rebar hanger bar is installed inside the straight threaded rebar reserved hole, both ends of the straight threaded rebar hanger bar are threaded, one end passes through the straight threaded rebar reserved hole, a sleeve is sleeved on the outside, a pad is arranged between the conversion beam, and the other end is mechanically connected to the main rebar of the rebar cage, a fine-rolled rebar hanger bar is installed inside the fine-rolled rebar reserved hole, one end of the fine-rolled rebar hanger bar passes through the fine-rolled rebar reserved hole, and is fixed to the conversion beam by a flat nut and a flat pad.

[0011] Preferably, the double I-beams and the stiffening plate connections in the conversion beam 2 are welded and fixed, and the stiffening plates are arranged at a spacing of 50+3×100+50cm, with a total of 16 plates.

[0012] Preferably, a reinforcement hoop is installed inside the steel cage.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The connection is firm; the flat nuts, mechanical connection sleeves and connectors of the precision-rolled threaded steel are inspected in batches, and the welding quality at the intersection site is more guaranteed;

[0015] 2. The force of the rod is scientific and reasonable; the tensile strength of the precision-rolled threaded steel bar is much greater than that of the straight threaded steel bar. It is safer and more reasonable to use 8 straight threaded steel bars as suspension bars than 4 straight threaded steel bars, and the force of the entire device is more reasonable;

[0016] 3. Improve work efficiency: Compared with the conventional process of welding the lifting rod and connecting the lifting rod and the lifting fixture every time, this device greatly improves the work efficiency through mechanical connection. In addition, this device and the lifting fixture do not need to be removed after installation;

[0017] 4. Rotational use: Compared with conventional disposable suspension rods, the suspension rods in this project can be rotated and used continuously as long as the thread teeth are not damaged, which greatly saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more specifically and intuitively illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0019] Figure 1 This is a schematic diagram of the installation structure of the conversion beam proposed by the utility model;

[0020] Figure 2 This is a schematic diagram of the conversion beam structure proposed by the utility model;

[0021] Figure 3 This is a side view of the conversion beam proposed by the utility model;

[0022] Figure 4 A top view of the conversion beam proposed by the utility model;

[0023] Figure 5 This is a bottom view of the conversion beam proposed by the utility model.

[0024] In the figure: 1. Steel cage; 2. Transfer beam; 3. Straight threaded steel hanger bars; 4. High-precision rolled threaded steel hanger bars. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] Reference Figure 1 A reinforcing bar device suitable for large-diameter and ultra-long steel cages comprises a steel cage 1, on which four conversion beams 2 are arranged, the conversion beams 2 are made of double-jointed I20 I-beams, with a length of 40 cm, stiffening plates are arranged at the inner and outer webs, and the stiffening plates are arranged at a spacing of 50+3×100+50 cm, with a total of 16 plates. In addition, two Φ40mm straight threaded steel bar reserved holes of 45 mm (the center is 74 mm from the edge of the I-beam) and a Φ32mm finely rolled threaded steel reserved hole of 35 mm (located at the center of the I-beam) are cut on the center line of the double-jointed I-beam; the straight threaded steel bar hanger 3 uses two Φ40mm straight threads of a certain length The steel bars are threaded at both ends, one end passes through the reserved hole for straight threaded steel bars, and is fixed to the conversion beam 2 with a sleeve (outer diameter 59mm, height 86mm) and a pad (100×100×10mm). The exposed wire length is 80mm (2D), and the other end is mechanically connected to the main reinforcement of the steel cage 1; the fine-rolled threaded steel hanger bar 4 uses a certain length of Φ32mm fine-rolled threaded steel bar to pass through the reserved hole for fine-rolled threaded steel bars, and uses a flat nut (65×75×72mm, opposite side×diagonal×height) and a flat pad (140×140×24mm) to fix one end to the conversion beam 1, and the other end is fixed to the hanger with the same flat nut and flat pad.

[0027] After the device is manufactured, it is not disassembled. When the length of the hanger bar is determined, the length of the overall hanger bar is set by adjusting the relative position of the fine-rolled threaded steel hanger bar and the hanger. After the length of the hanger bar is adjusted, the steel cage is connected for fixing.

[0028] Each time you use it, you should check whether there is a significant change in the position of the thread teeth of the straight threaded steel bar hanger. If there is a significant change, the straight threaded steel bar hanger should be replaced.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A reinforcing bar hanging device suitable for a large-diameter and extra-long reinforcing bar cage, comprising a reinforcing bar cage (1), characterized in that: A plurality of conversion beams (2) are arranged on the steel cage (1). The conversion beams (2) are made of double-jointed I-beams, and stiffening plates are arranged at the inner and outer webs. Pre-reserved holes for straight threaded steel bars are provided at both ends of the center line of the conversion beams (2). A pre-reserved hole for fine-rolled threaded steel bars is provided in the middle of the conversion beams (2). A straight threaded steel bar hanger bar (3) is installed inside the pre-reserved hole for straight threaded steel bars. Both ends of the straight threaded steel bar hanger bar (3) are threaded. One end passes through the pre-reserved hole for straight threaded steel bars, and a sleeve is sleeved on the outside. A pad is arranged between the conversion beams (2), and the other end is mechanically connected to the main bars of the steel cage (1). A fine-rolled threaded steel bar hanger bar (4) is installed inside the pre-reserved hole for fine-rolled threaded steel bars. One end of the fine-rolled threaded steel bar hanger bar (4) passes through the pre-reserved hole for fine-rolled threaded steel bars, and is fixed to the conversion beam (2) by a flat nut and a flat pad.

2. A reinforcing bar hanging device suitable for large diameter and extra-long reinforcing bar cages according to claim 1, characterized in that: The double-jointed I-beams and the joints of the stiffening plates in the conversion beam (2) are welded and fixed, and the stiffening plates are arranged at a spacing of 50+3×100+50 cm, with a total of 16 plates.

3. The sling rod device suitable for large diameter and extra-long steel cage according to claim 1 is characterized in that: A reinforcement hoop is installed inside the steel cage (1).

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