Portable adjustable cantilever frame body fixing device

Abstract

The utility model discloses a portable adjustable cantilever frame body fixing device. The cantilever frame comprises I-shaped steel, an adjustable chassis and two cantilever frame body fixing seats arranged on the I-shaped steel, the adjustable chassis is fixed to the surface of a main body structure through embedded bolts embedded in concrete of the main body structure, and one end of the I-shaped steel is arranged between an upper tray and a lower tray of the adjustable chassis. The I-shaped steel is fixed on the adjustable chassis and connected with the adjustable chassis through fixing bolts, an arc-shaped adjusting hole channel is further formed in a lower tray of the adjustable chassis, adjusting bolts are fixed at the bottom of a wing plate on the lower portion of the I-shaped steel and matched with the adjusting hole channel, and the I-shaped steel and the adjustable chassis are fixed together through nuts arranged on the adjusting bolts. The cantilever frame body fixing base comprises a sliding bottom support with a T-shaped groove, a positioning steel bar vertically fixed to the upper portion of the sliding bottom support and fastening bolts, the sliding bottom support is connected to the upper wing plate of the I-shaped steel in a sliding mode, the two fastening bolts are arranged on the upper portion of the sliding bottom support, and the lower ends of the fastening bolts are fixedly connected with a circular base plate.

Description

Technical Field

[0001] This utility model relates to a fixing device for cantilevered scaffolding, belonging to the field of building construction technology. Background Technology

[0002] Currently, in construction, the method for fixing the uprights of cantilevered scaffolding involves welding 20mm-25mm diameter and 150mm high reinforcing bar ends to the I-beams, inserting steel pipes into these ends to secure the uprights and prevent slippage. The current method for fixing the cantilevered I-beams is a pre-embedded fixing system. However, the I-beams cannot be adjusted in angle and must be perpendicular to the structural surface, which presents drawbacks in corner areas of the main structure. The existing methods for fixing cantilevered scaffolding have the following disadvantages: First, the varying lengths of the cantilevered I-beams and the welding of reinforcing bar ends can easily lead to misalignment, making subsequent upright modifications difficult. Second, welding reinforcing bar ends to the I-beams can easily damage them, reducing their durability. Third, although a fixing device has been developed that secures the I-beams to the bottom of the flanges, the slope at the bottom of the flanges makes it difficult to securely fix them. Fourth, the I-beams can only be installed perpendicular to the structural surface, making angled installation impossible in corner areas, thus preventing the installation of corner members.

[0003] Therefore, a new type of cantilever frame fixing device is needed to solve the drawbacks of fixing the uprights and I-beams of the cantilevered external frame, and to improve the accuracy and convenience of fixing the uprights and cantilevered I-beams. Utility Model Content

[0004] To address the aforementioned problems in the existing technology, this utility model provides a convenient adjustable cantilever frame fixing device that is simple in structure, reliable in fixation, easy to adjust, and capable of quickly and accurately positioning and installing the cantilever frame.

[0005] This utility model is achieved through the following technical solution: a convenient adjustable cantilever frame fixing device, characterized in that: it includes an I-beam, an adjustable base, and two cantilever frame fixing seats mounted on the I-beam. The adjustable base includes a fixing plate and an upper tray and a lower tray fixed at intervals on the side of the fixing plate. The fixing plate of the adjustable base is fixed to the surface of the main structure by pre-embedded bolts embedded in the concrete of the main structure. The upper tray and the lower tray of the adjustable base are provided with corresponding bolt holes. One end of the I-beam is positioned between the upper tray and the lower tray and is connected to the upper tray and the lower tray of the adjustable base by fixing bolts. The lower tray of the adjustable base is also provided with an arc-shaped adjustment channel. An adjusting bolt is fixed to the bottom of the lower flange of the I-beam. The adjusting bolt is located in the adjusting channel. The I-beam and the lower tray are fixed together by nuts set on the adjusting bolt. The cantilever frame fixing seat includes a sliding base with a T-slot, a positioning steel bar, and fastening bolts. The sliding base is slidably connected to the upper flange of the I-beam. The positioning steel bar is vertically fixed to the upper part of the sliding base. A fastening bolt is respectively provided on both sides of the upper flange of the I-beam on the upper part of the sliding base. The lower end of the screw of the fastening bolt passes through the upper part of the sliding base and is located on the upper part of the upper flange of the I-beam. A circular base with a diameter larger than the bolt hole diameter on the upper part of the sliding base is fixed to the lower end of the screw of the fastening bolt.

[0006] In this invention, the adjustable base is fixed to the surface of the main structure via pre-embedded bolts. The I-beam is connected to the adjustable base via fixing bolts. The I-beam can rotate at a certain angle according to construction needs, achieving angle adjustment. In corner areas, additional or corner I-beams are not required, allowing for free erection of the scaffold. After the angle of the I-beam is determined, the nut on the adjusting bolt secures the I-beam to the adjustable base. The sliding base is slidably connected to the upper flange of the I-beam. The sliding base is fixed to the I-beam by tightening the two upper fastening bolts. Loosening the fastening bolts allows for easy adjustment of the sliding base's position on the I-beam. The positioning steel bar fixed to the upper part of the sliding base is used to insert the cantilevered scaffold uprights. The circular base at the lower end of the fastening bolts increases the frictional resistance between the sliding base and the I-beam, ensuring a secure fastening. Simultaneously, the enlarged circular base prevents the fastening bolts from coming loose when loosened, thus preventing safety accidents.

[0007] Furthermore, to ensure the reliability of the connection between the adjustable chassis and the main structure, the fixing plate of the adjustable chassis is fixed to the surface of the main structure by two pre-embedded bolts embedded in the concrete of the main structure.

[0008] Furthermore, the adjustment channels are two symmetrically arranged, and the adjustment angle of the I-beam is ±45°.

[0009] The beneficial effects of this utility model are as follows: This utility model has a simple structure, is easy and quick to install and adjust, is detachable and does not easily damage the I-beams, ensuring rapid and efficient installation of the cantilever frame and reducing the error rate; this utility model is easy to disassemble, improving the installation efficiency of the I-beams and the cantilever frame; by setting an adjustable base connected to the main structure, and connecting the I-beams to the adjustable base with fixing bolts, the left and right adjustment of the I-beams can be realized, suitable for I-beam installation in any situation, eliminating the need for additional or corner I-beams in corner areas, allowing for free erection of the frame; by using a sliding base, the sliding base can be easily adjusted... The position of the I-beam allows for the fixing of cantilevered I-beam frames under any conditions. By adjusting the position of the sliding base, the position of the positioning reinforcement can be precisely adjusted, ensuring accurate positioning, reducing the difficulty of subsequent upright changes, and guaranteeing reliable frame erection. The fastening bolts are located on the upper part of the sliding base, facilitating operation by construction personnel, and the fit between the fastening bolts and the upper flange of the I-beam makes the fixation more secure. The enlarged circular base at the lower end of the fastening bolts increases the frictional resistance between the sliding base and the I-beam, ensuring a secure fixation. Furthermore, it prevents the fastening bolts from coming loose and causing safety accidents when loosening them. Compared to traditional cantilever frame fixing technology, this invention is more convenient, efficient, and accurate, reducing the difficulty of subsequent upright changes, saving erection costs, improving erection quality, and allowing for the reuse of the sliding base, further reducing construction costs. Attached Figure Description

[0010] Figure 1 This is a front view schematic diagram of the present invention;

[0011] Figure 2 This is a top view schematic diagram of the present invention (not shown);

[0012] Figure 3 This is a schematic diagram of the adjustable chassis in this utility model;

[0013] Figure 4 This is a top view of the adjustable chassis in this utility model;

[0014] Figure 5 This is a schematic diagram of the sliding base in this utility model;

[0015] Figure 6 yes Figure 5 A top-down view;

[0016] Figure 7 This is a structural schematic diagram of the fastening bolt in this utility model.

[0017] In the diagram, 1. Main structure, 2. Embedded bolts, 3. Adjustable chassis, 4. Fixing bolts, 5. I-beams, 6. Cantilever frame fixing base, 7. Adjusting bolts, 8. Adjusting nuts;

[0018] 3.1 Fixing plate; 3.2 Upper tray; 3.3 Lower tray; 3.4 Adjustment channel;

[0019] 6.1 Sliding base, 6.2 Positioning steel bars, 6.3 Fastening bolts, 6.3.1 Circular base. Detailed Implementation

[0020] The present invention will be further described below through non-limiting embodiments and in conjunction with the accompanying drawings:

[0021] As shown in the attached diagram, a convenient adjustable cantilever frame fixing device includes an I-beam 5, an adjustable base 3, and two cantilever frame fixing seats 6 mounted on the I-beam 5. The adjustable base 3 is made of 20mm thick stainless steel plate and includes a fixing plate 3.1 and an upper tray 3.2 and a lower tray 3.3 fixed at intervals on the side of the fixing plate 3.1. The upper tray 3.2 has dimensions of 80mm*120mm and is provided with bolt holes; the lower tray 3.3 has dimensions of 200mm*200mm and is provided with bolt holes and adjustable channels 3.4, and the bolt holes on the upper tray 3.2 and the lower tray 3.3 are correspondingly arranged. The fixing plate 3.1 of the adjustable chassis 3 is fixed to the surface of the main structure 1 by pre-embedded bolts 2 embedded in the concrete of the main structure and nuts. One end of the I-beam 5 is located between the upper tray 3.2 and the lower tray 3.3, and is connected to the upper tray 3.2 and the lower tray 3.3 of the adjustable chassis 3 by fixing bolts 4. The I-beam 5 can rotate around the fixing bolts. The adjustment channel 3.4 on the lower tray 3.3 of the adjustable chassis 3 is arc-shaped. The bottom of the lower flange of the I-beam 5 is fixed with an adjustment bolt 7. The adjustment bolt 7 is located in the adjustment channel 3.4. When the I-beam 5 rotates, the adjustment bolt 7 can move along the adjustment channel 3.4. The I-beam 5 and the lower tray 3.3 are fixed together by the adjustment nut 8 set on the adjustment bolt 7. The cantilever frame fixing seat 6 includes a sliding base 6.1 with a T-slot, a positioning steel bar 6.2, and a fastening bolt 6.3. The sliding base 6.1 is slidably connected to the upper flange of the I-beam 5 via its T-slot. The sliding base 6.1 is made of 10mm thick stainless steel plate, with dimensions of 150mm*150mm and a height of 40mm. There is a 10mm gap between the sliding base 6.1 and the I-beam 5 to facilitate movement of the sliding base on the I-beam. The positioning steel bar 6.2 is vertically fixed to the upper part of the sliding base 6.1. The positioning steel bar 6.2 has a diameter of 20mm and a height of 200mm and is welded to the sliding base 6.1 for fixation. A fastening bolt 6.3 is provided on each side of the upper flange of the I-beam 5 on the upper part of the sliding base 6.1. The diameter of the fastening bolt 6.3 is 8mm. The lower end of the screw of the fastening bolt 6.3 passes through the upper part of the sliding base 6.1 and is located on the upper part of the upper flange of the I-beam 5. A circular base plate 6.3.1 is fixed to the lower end of the screw of the fastening bolt 6.3. The diameter of the circular base plate 6.3.1 is larger than the diameter of the bolt hole on the upper part of the sliding base 6.1. The fastening bolt 6.3 is located on the upper part of the sliding base 6.1, which makes it convenient for construction personnel to tighten the bolts. The circular base plate 6.3.1 can increase the frictional resistance with the I-beam, making the sliding base firmly fastened. At the same time, the circular base plate 6.3.1 can also prevent the fastening bolt from coming out when the bolt is loosened, thus preventing safety accidents.

[0022] To ensure the reliability of the connection between the adjustable chassis 3 and the main structure 1, it is preferable that the fixing plate 3.1 of the adjustable chassis 3 is fixed to the surface of the main structure by two pre-embedded bolts 2 embedded in the concrete of the main structure.

[0023] In this invention, the adjustment channel 3.4 can be set to one, allowing arbitrary adjustment of the rotation angle of the I-beam 5. In this embodiment, two adjustment channels 3.4 are symmetrically arranged, and the appropriate adjustment channel can be selected according to construction needs, enabling 45-degree rotation adjustment of the I-beam to the left and right.

[0024] In use, the adjustable base 3 is connected to the main structure 1 via pre-embedded bolts 2. After the I-beam 5 is connected to the adjustable base 3, the angle of the I-beam 5 is adjusted according to construction needs, and then the adjusting nut 8 is tightened to fix the I-beam to the adjustable base 3. The sliding base 6.1 can slide back and forth on the I-beam 5. It can be installed after the I-beam 5 is fixed and before the cantilever frame construction. According to the cantilever frame installation requirements, each sliding base 6.1 is fixed in the corresponding position on the I-beam 5, and then the frame can be erected.

[0025] This utility model has a simple structure, is reliable and flexible in use, and can be adapted to the fixing of cantilevered I-beam frames under any conditions. In particular, it eliminates the need to set additional I-beams or corner I-beams in the corner areas, allowing for free erection of the frame. Furthermore, this utility model is easy to install and dismantle, which can improve the efficiency of cantilevered frame installation and dismantling and speed up the construction progress.

[0026] The other parts in this embodiment are all existing technologies and will not be described in detail here.

Claims

1. A convenient adjustable cantilever frame fixing device, characterized in that: The utility model provides a kind of adjustable chassis (3) and two cantilever frame body fixing seat (6) of I-shaped steel (5) on it, the adjustable chassis (3) includes fixed plate (3.1) and upper and lower interval fixed plate (3.1) side's upper tray (3.2) and lower tray (3.3), the fixed plate (3.1) of adjustable chassis (3) is fixed to the surface of main structure by embedded bolt embedded in main structure concrete, the upper tray (3.2) and lower tray (3.3) of adjustable chassis (3) are equipped with corresponding bolt hole, one end of I-shaped steel (5) is arranged between upper tray (3.2) and lower tray (3.3), and is connected with the upper tray (3.2) and lower tray (3.3) of adjustable chassis (3) by fixed bolt (4), the lower tray (3.3) of adjustable chassis (3) is also provided with arc adjusting channel (3.4), the lower wing plate bottom of I-shaped steel (5) is fixed with adjusting bolt (7), adjusting bolt (7) is located in the adjusting channel (3.4), I-shaped steel (5) and the lower tray (3.3) are fixed together by nut arranged on adjusting bolt (7), the cantilever frame body fixing seat (6) includes sliding bottom support (6.1) with T-shaped slot, positioning steel bar (6.2), fastening bolt (6.3), sliding bottom support (6.1) is slidably connected on the upper wing plate of I-shaped steel (5), positioning steel bar (6.2) is vertically fixedly connected on the upper portion of sliding bottom support (6.1), the upper portion of sliding bottom support (6.1) is provided with one fastening bolt (6.3) on both sides of the upper wing plate of I-shaped steel (5) correspondingly, the screw lower end of fastening bolt (6.3) passes through the upper portion of sliding bottom support (6.1) and is located on the upper portion of the upper wing plate of I-shaped steel (5), the screw lower end of fastening bolt (6.3) is fixedly connected with circular bottom plate (6.3.1) with diameter greater than the bolt hole diameter of the upper portion of sliding bottom support (6.1).

2. The portable adjustable overhang frame fixing device according to claim 1, characterized in that: The fixed plate (3.1) of the adjustable chassis (3) is fixed to the surface of the main structure by two embedded bolts embedded in the main structure concrete.

3. The portable adjustable overhang frame fixing device according to claim 1 or 2, characterized in that: The adjusting channel (3.4) is symmetrically arranged, and the adjusting angle of the I-shaped steel (5) is ±45°.

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