A cantilever scaffolding foundation connection mechanism

Abstract

A cantilever scaffolding foundation connection mechanism relates to a field of building technology, including a wire rope limiting structure and a pole structure. The wire rope limiting structure includes an inverted T-shaped groove component and a wire rope limiting component. The lower part of the inverted T-shaped groove component is provided with a threaded through hole. The wire rope limiting component includes a screw and a ring. The pole structure includes a T-shaped groove component and a positioning screw. The upper part of the T-shaped groove component is provided with a threaded hole. The positioning screw is screwed into the threaded hole. Compared with the existing technology, the present invention has the advantages of simple structure, convenient construction, safety and reliability, welding-free construction, no damage to components, convenient disassembly and assembly, convenient component recycling and reuse, and can improve the construction speed.

Description

Technical Field

[0001] The invention relates to the technical field of construction, in particular to a cantilever scaffolding foundation connection mechanism. Background Art

[0002] like Fig.18 , 19 As shown in Figures 20 and 21, in the design and construction of cantilever scaffolding, the suspension point under the foundation of the cantilever scaffolding is generally composed of one or two layers of I-beams 1 and wire ropes E. Vertical poles F are set on the cantilever foundation, and effective connections are required between the vertical poles F and the foundation, the foundation components, and the wire ropes E and the foundation to ensure that the components do not exceed the limit displacement during the installation, use, and dismantling processes, thereby ensuring the safety of the entire construction process.

[0003] In terms of the connection between the vertical pole F and the foundation, currently, a small steel bar column J is generally welded to the I-beam 1 on the construction layer, and the upper part is inserted into the vertical pole F for connection to ensure that the vertical pole F does not shift. This method requires cutting off the small steel bar column J after the I-beam 1 is dismantled before the I-beam 1 can be put into use again.

[0004] When two layers of I-beams 1 are used for connection, the existing construction technology generally uses welding to connect the upper and lower layers of I-beams 1. When dismantling, wind welding or a grinder is required to cut and separate them before dismantling.

[0005] When the steel wire rope E is connected to the foundation, it is necessary to prevent the horizontal force from causing the lower part of the steel wire rope E to slide into the building and reduce the bearing capacity of the foundation. During construction, a steel ring K is generally welded at the bottom of the I-beam 1 to ensure this.

[0006] The above practices all require welding construction on the working floor. Sparks generated by welding must be effectively controlled to avoid fire. During dismantling welding, the quality of the weld is difficult to guarantee, which can easily damage the I-beam 1, affecting the quality of the next investment, and slow down the construction process of foundation component connection. For the convenience of dismantling and management, some projects simply do not weld the I-beams 1 and the wire rope E to the foundation, increasing safety risks. Summary of the invention

[0007] The object of the present invention is to provide a cantilever scaffolding foundation connection mechanism which can overcome one or more of the above-mentioned disadvantages, has a simple structure, is easy to construct, is safe and reliable, requires no welding, does not damage components, and can increase the construction speed.

[0008] The present invention is achieved in that:

[0009] Solution 1: It includes a wire rope limiting structure arranged on the I-beam and a vertical pole structure arranged on the I-beam. The wire rope limiting structure includes an inverted T-shaped groove component and a wire rope limiting component. The inverted T-shaped groove of the inverted T-shaped groove component matches the inverted T-shaped shape of the lower part of the I-beam. The lower part of the inverted T-shaped groove component is provided with a threaded through hole. The wire rope limiting component includes a screw rod and a ring fixed at the bottom end of the screw rod. The screw rod is screwed into the threaded through hole. The vertical pole structure includes a T-shaped groove component and a positioning screw rod. The T-shaped groove of the T-shaped groove component matches the T-shaped shape of the upper part of the I-beam. The upper part of the T-shaped groove component is provided with a threaded hole, and the positioning screw rod is screwed into the threaded hole.

[0010] When building a cantilever scaffold, fix the I-beam on the floor of the lower hanging point so that the I-beam floats out of the floor, and sleeve the inverted T-shaped groove component of the wire rope limiting structure on the lower part of the inverted T-shaped I-beam. The screw of the wire rope limiting component is screwed into the threaded through hole so that the end of the screw is pressed tightly against the lower part of the I-beam, thereby fixing the wire rope limiting structure under the I-beam. Then sleeve the T-shaped groove component of the vertical pole structure on the upper part of the T-shaped I-beam, screw the positioning screw into the threaded hole so that the end of the positioning screw is pressed tightly against the upper part of the I-beam, and fix the vertical pole structure on the I-beam, thereby completing the construction of the cantilever scaffold foundation. The wire rope limiting structure and the vertical pole structure using the technology of the present invention can flexibly build a cantilever scaffold at the set position of the I-beam according to needs, and the construction is convenient, welding-free construction, no damage to components, and convenient disassembly and assembly. The T-shaped groove component and the inverted T-shaped groove component are used. Since the two components have the same structure, they can be used universally, which not only saves manufacturing costs but also makes use more conveniently.

[0011] Preferably, the T-slot member comprises a T-slot member body and a threaded sleeve, wherein the threaded sleeve penetrates into the T-slot member body from the upper part of the T-slot member body and is fixedly connected with the T-slot member body, and the bottom end of the threaded sleeve directly reaches the upper groove wall of the T-slot of the T-slot member body. The threaded sleeve can increase the connection area between the positioning screw and the T-slot member, thereby enhancing the overall rigidity of the connection between the positioning screw and the T-slot member.

[0012] Preferably, an I-beam connecting component is provided, the I-beam connecting component includes a pair of butt-jointed cards, a screw / nut that fixes the butt-jointed pair of cards together, the card includes a positioning block, a clip connected to the positioning block, vertical surfaces perpendicular to each other are provided on the side of the positioning block, there are two clips, one of which is vertically arranged above one of the vertical surfaces of the positioning block, the inner part of one of the clips is a wing that floats out of the other vertical surface of the positioning block, and the other clip is vertically arranged below the other vertical surface of the positioning block, the inner part of the other clip is a wing that floats out of one of the vertical surfaces of the positioning block.

[0013] When building a double-layer steel cantilever scaffolding foundation, fix the lower I-beam on the lower hanging point floor so that the lower I-beam floats out of the floor, fix the wire rope limit structure under the lower I-beam, and vertically place the upper I-beam at the set position of the lower I-beam that floats out of the floor. Then, clamp a pair of cards at the intersection of the lower I-beam and the upper I-beam so that the two vertical surfaces of the cards are against the upper side of the lower I-beam and the lower side of the upper I-beam respectively. The wings of the two clips of the card extend into the upper side wall of the inverted U-shaped notch of the lower I-beam and the lower side wall of the inverted U-shaped notch of the upper I-beam respectively, and the screw / nut fixes the clip of one of the cards with the clip of another card located in the positive projection direction of the clip of one of the cards, thereby fixing the lower I-beam and the upper I-beam that are perpendicular to each other, and fixing the vertical pole structure on the upper I-beam, thereby completing the construction of the double-layer steel cantilever scaffolding foundation.

[0014] The use of I-beam connecting components means that there is no need for welding to build, and the fixed connection position can be flexibly set according to design requirements, making it easy to disassemble and assemble the double-layer steel of the cantilever scaffolding.

[0015] Alternatively, the I-beam connecting component includes a pair of butt-jointed cards and a screw / nut that fixes the butt-jointed pair of cards together. The cards include a limiting ring and a pair of pressing plates, one end of one pressing plate is hinged to the upper end of the limiting ring, and one end of the other pressing plate is hinged to the lower end of the limiting ring, and the other end of the pressing plate is perforated on the top.

[0016] When building a double-layer steel cantilever scaffolding foundation, fix the lower I-beam on the lower hanging point floor so that the lower I-beam floats out of the floor, fix the wire rope limiting structure under the lower I-beam, place the upper I-beam at a set angle at the set position of the lower I-beam that floats out of the floor, and then clamp a pair of cards at the intersection of the lower I-beam and the upper I-beam, swing the two pressure plates of the cards relatively, so that the limiting rings of the cards are respectively against the upper side of the lower I-beam and the lower side of the upper I-beam, and the two sides of the cards are clamped. The lower part of the perforation of the pressing plate extends into the upper side wall of the inverted U-shaped notch of the lower I-beam and the lower side wall of the inverted U-shaped notch of the upper I-beam respectively, and the screw / nut fixes the pressing plate of one of the cards and the pressing plate of another card located in the positive projection direction of the pressing plate of one of the cards together through the perforation on the pressing plate, thereby fixing the lower I-beam and the upper I-beam that are close to each other at a certain angle, and fixing the vertical pole structure on the upper I-beam, thereby completing the construction of the double-layer steel cantilever scaffolding foundation.

[0017] A pair of pressure plates are respectively hinged at the upper and lower ends of the limiting ring by using a limiting ring and a hinged connection. In this way, the angle of the pair of pressure plates can be flexibly adjusted according to the angle between the upper I-beam and the lower I-beam, so that the upper I-beam and the lower I-beam are fixedly connected, thereby adapting to the design requirements of cantilever scaffolding that needs to turn or other application scenarios.

[0018] Solution 2: It includes a square ring component, a rope ring fixed under the square ring component, and a positioning screw. The height and width of the square hole of the square ring component match the width and height of the I-beam, and the top of the square ring component is provided with an internal threaded hole matching the positioning screw.

[0019] When building a single-layer cantilever scaffold, fix the I-beam on the lower hanging point floor, make the I-beam float out of the floor, sleeve the square ring component on the I-beam floating out of the floor, screw the positioning screw into the threaded hole at the top of the square ring component, and press the end of the positioning screw tightly on the upper part of the I-beam, thereby completing the cantilever scaffold foundation component. The square ring with rope ring and positioning screw of the present invention can flexibly build a cantilever scaffold at the set position of the I-beam according to needs, which is convenient to construct, welding-free construction, no damage to components, and easy to disassemble and assemble.

[0020] Preferably, in order to further improve the firmness of the connection, fixing screws are threaded through both sides of the square ring component.

[0021] When in use, after the square ring component is sleeved on the I-beam floating out of the floor, the screws are relatively rotated to press the screws tightly against the side of the I-beam, and the square ring component is fixed on the I-beam with the positioning screw.

[0022] Preferably, the square ring component includes a square ring body and a threaded steel sleeve, the threaded steel sleeve penetrates the square ring body from the upper part of the square ring body and is fixedly connected with the square ring body, the bottom end of the threaded steel sleeve directly reaches the upper groove wall of the square ring of the square ring body, and the inner screw hole of the threaded steel sleeve constitutes an inner threaded hole. The threaded steel sleeve can increase the connection area between the positioning screw and the square ring component, thereby enhancing the overall rigidity of the connection between the positioning screw and the square ring component.

[0023] Compared with the prior art, the present invention has the advantages of simple structure, convenient construction, safety and reliability, welding-free construction, no damage to components, convenient disassembly and assembly, convenient component recycling and reuse, and can improve construction speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of embodiment 1 of the cantilever scaffolding foundation connection mechanism of the present invention;

[0025] Figure 2 for Figure 1 Structural schematic diagram of the wire rope limiting structure at A;

[0026] Figure 3 It is a structural schematic diagram of the connection between the wire rope limiting structure and the I-beam;

[0027] Figure 4 for Figure 1 Structural schematic diagram of the pole structure at B;

[0028] Figure 5 It is a structural schematic diagram of the connection between the vertical pole structure and the I-beam;

[0029] Figure 6 for Figure 1 A schematic structural diagram of an I-beam connecting member embodiment 1 at C;

[0030] Figure 7 for Figure 6 A top view of an I-beam connecting member; Figure 8 for Figure 7 A bottom view of one of the cards of the I-beam connecting member;

[0031] Fig. 9 A top view of the I-beam connecting member embodiment 1 after being connected to the I-beam;

[0032] Fig.10 This is a schematic structural diagram of Example 2 of an I-beam connecting member;

[0033] Fig.11 for Fig. 9 Bottom view of one of the cards; Fig.12 It is a schematic diagram of the I-beam connecting member embodiment 2 connected to a double-layer I-beam with an angle of 90 degrees;

[0034] Fig.13 It is a top view of the I-beam connecting member embodiment 2 after being connected with a double-layer I-beam with a variable angle;

[0035] Fig.14 This is a schematic structural diagram of the embodiment 2 of the cantilever scaffold foundation connection mechanism of the present invention when in use;

[0036] Fig.15 It is a structural schematic diagram of Example 2 of the cantilever scaffolding foundation connection mechanism of the present invention;

[0037] Fig.16 It is a structural schematic diagram of rope ring embodiment 2 of embodiment 2 of the cantilever scaffold foundation connection mechanism of the present invention;

[0038] Fig.17 It is a structural schematic diagram of rope ring embodiment 3 of embodiment 2 of the cantilever scaffold foundation connection mechanism of the present invention;

[0039] Fig.18It is a structural schematic diagram of the prior art;

[0040] Fig.19 for Fig.18 Schematic diagram of the structure of the wire rope limiting steel ring;

[0041] Fig. 20 for Fig.18 A schematic diagram of the structure at a single-layer pole;

[0042] Fig.21 This is a schematic diagram of the structure at the double-layer pole. DETAILED DESCRIPTION

[0043] The present invention is now described in further detail with reference to the accompanying drawings and embodiments:

[0044] Embodiment 1 of the cantilever scaffolding foundation connection mechanism of the present invention is as follows: Figure 1 As shown, it includes a wire rope limiting structure 2 arranged on the I-beam 1 and a pole structure 3 arranged on the I-beam 1. Figure 1 , 2 As shown in , 3, the wire rope limiting structure 2 includes an inverted T-shaped groove member 201 and a wire rope limiting member 202. The inverted T-shaped groove 203 of the inverted T-shaped groove member 201 matches the inverted T-shaped shape 101 at the lower part of the I-beam 1. The lower part of the inverted T-shaped groove member 201 is provided with a threaded through hole 204. The wire rope limiting member 202 includes a circular pressing plate 2021, a screw body 2022 welded and fixed on the circular pressing plate 2021, and a ring 2023 welded and fixed at the bottom end of the circular pressing plate 2021. The circular pressing plate 2021 and the screw body 2022 constitute a screw, and the screw is screwed into the threaded through hole 204, as shown in FIG. Figure 1 , 4 As shown in , 5, the vertical pole structure 3 includes a T-slot component 301 and a positioning screw 302. The T-slot 303 of the T-slot component 301 matches the T-shaped shape 102 of the upper part of the I-beam 1. A threaded hole 304 is provided on the upper part of the T-slot component 301. The positioning screw (matching the inner diameter of the steel pipe vertical pole F) 302 is screwed into the threaded hole 304. A hexagonal head 305 is provided on the top of the positioning screw 302. The body of the positioning screw 302 is provided with a through hole 306, so that the operator can operate to position and fix the positioning screw 302.

[0045] The T-slot component 301 includes a T-slot component body 3011 and a threaded sleeve 3012 with a threaded hole 304. The threaded sleeve 3012 penetrates into the T-slot component body 3011 from the upper part of the T-slot component body 3011 and is welded and fixedly connected with the T-slot component body 3011. The bottom end of the threaded sleeve 3012 directly reaches the upper groove wall of the T-slot 303 of the T-slot component body 3011.

[0046] like Figure 1As shown, when building a single-layer cantilever scaffold, the I-beam 1 is fixed on the lower hanging point floor D, so that the I-beam 1 floats out of the floor D, the inverted T-shaped groove member 201 of the wire rope limiting structure 2 is sleeved on the lower part of the I-beam 1 of the inverted T-shaped shape 101, and the screw body 2022 of the screw of the wire rope limiting member 2 is screwed into the threaded through hole 204, so that the end of the screw body 2022 of the screw is pressed tightly against the lower part of the I-beam 1, thereby fixing the wire rope limiting structure 2 under the I-beam, and then the vertical pole The T-slot member 301 of the structure 3 is sleeved on the upper part of the T-shaped I-beam 102, and the positioning screw 302 is screwed into the threaded hole 304, so that the end of the positioning screw 302 is pressed tightly against the upper part of the I-beam 1, and the vertical pole structure 3 is fixed on the I-beam 1, thereby completing the construction of the cantilever scaffolding foundation. Then, the wire rope E is passed through the wire rope limiting member 202 of the wire rope limiting structure 2, and the steel pipe vertical pole F is sleeved on the positioning screw 302 of the vertical pole structure 3, and the scaffolding can be constructed.

[0047] Preferably, if Figure 1 , 6 , 7, 8, and 9, an I-beam connecting member 4 is provided, the I-beam connecting member 4 includes a pair of butt-jointed cards 401, a screw / nut 402 that fixes the butt-jointed pair of cards 401, the card 401 includes a positioning block 4011, a clip 4012 connected to the positioning block 4011, a side of the positioning block 4011 is provided with vertical surfaces 4013 perpendicular to each other, the clip 4012 has two pieces, one of which is fixed to the upper side of one of the vertical surfaces 4013 of the positioning block 4011 by a vertical welding machine, and one of the clips 4012 is fixed to the upper side of one of the vertical surfaces 4013 of the positioning block 4011 by a vertical welding machine. The inner part of 12 is a wing 4014 that floats out of the other vertical surface 4013 of the positioning block 4011, and another clip 4012 is fixed to the lower side of the other vertical surface 4013 of the positioning block 4011 by a vertical welding machine. The inner part of the other clip 4012 is a wing 4014 that floats out of one of the vertical surfaces 4013 of the positioning block 4011, and a through groove 4015 is provided on the clip 4012 that is projected in the opposite direction of the vertical surface 4013 of the positioning block 4011, so that a screw / nut 402 passing through the through groove 4015 can fix a pair of cards 401.

[0048] When constructing a double-layer steel cantilever scaffold foundation, the lower I-beam 1 is fixed on the lower hanging point floor D, so that the lower I-beam 1 floats out of the floor D, the wire rope limiting structure 2 is fixed under the lower I-beam 1, the upper I-beam 1 is vertically placed at the set position of the lower I-beam 1 that floats out of the floor D, and then a pair of cards 401 are clamped at the intersection of the lower I-beam 1 and the upper I-beam 1, so that the two vertical surfaces 4013 of the card 401 are respectively against the side 104 on the upper side of the lower I-beam 1 and the side 105 on the lower side of the upper I-beam 1, and the wings 4012 of the two clamping pieces 4012 of the card 401 are respectively against the side 104 on the upper side of the lower I-beam 1 and the side 105 on the lower side of the upper I-beam 1. 014 respectively extends into the upper side wall 107 of the inverted U-shaped notch 106 of the lower I-beam 1 and the lower side wall 108 of the inverted U-shaped notch 106 of the upper I-beam 1, and the screw / nut 402 fixes the clip 4012 of one of the cards 401 and the clip 4012 of another card 401 located in the positive projection direction of the clip 4012 of one of the cards 401 together through the groove 4015, thereby fixing the lower I-beam 1 and the upper I-beam 2 which are perpendicular to each other, and fixing the vertical pole structure 3 on the upper I-beam 1, thereby completing the construction of the double-layer steel cantilever scaffolding foundation.

[0049] Or, if Fig.10 , 11 As shown in 12 and 13, the I-beam connecting member 4 includes a pair of butt-jointed cards 401, a screw / nut 402 for fixing the butt-jointed pair of cards 401, the card 401 includes a limiting ring 4016, a pair of pressing plates 4017, one end of one pressing plate 4017 is hinged to the upper end of the limiting ring 4016, one end of the other pressing plate 4017 is hinged to the lower end of the limiting ring 4016, and the other end of the pressing plate 4017 is provided with a perforated groove 4018 on top.

[0050] When constructing a double-layer steel cantilever scaffold foundation, fix the lower I-beam 1 on the lower hanging point floor D, so that the lower I-beam 1 floats out of the floor D, fix the wire rope limiting structure 2 under the lower I-beam 1, place the upper I-beam 1 at a set angle at the set position of the lower I-beam 1 that floats out of the floor D, and then clamp a pair of cards 401 at the intersection of the lower I-beam 1 and the upper I-beam 1, and swing the two pressing plates 4017 of the card 401 relatively, so that the limiting ring 4016 of the card 401 is respectively against the side 104 on the lower I-beam 1 and the side 105 on the lower side of the upper I-beam 1, and the perforated grooves of the two pressing plates 4017 of the card 401 The parts below 4018 extend into the upper side wall 107 of the inverted U-shaped notch 106 of the lower I-beam 1 and the lower side wall 108 of the inverted U-shaped notch 106 of the upper I-beam 1 respectively, and the screw / nut 402 fixes the pressing plate 4017 of one of the cards 401 and the pressing plate 4017 of another card 401 located in the positive projection direction of the pressing plate 4017 of one of the cards 401 through the perforated groove 4018 on the pressing plate 4017, thereby fixing the lower I-beam 1 and the upper I-beam 1 which are close to each other at a certain angle, and fixing the vertical pole structure 3 on the upper I-beam 1, thereby completing the construction of the double-layer steel cantilever scaffolding foundation.

[0051] Embodiment 2 of the cantilever scaffolding foundation connection mechanism of the present invention is as follows: Fig.14 , 15 As shown in 16 and 17, it includes a square ring component 5, a rope ring 6 fixed under the square ring component 5, and a positioning screw 7. The height and width of the square hole 7 of the square ring component 5 match the width and height of the I-beam 1, and the top of the square ring component 5 is provided with an internal threaded hole 8 matching the positioning screw 7.

[0052] like Fig.15 As shown, the rope ring 6 is an arc-shaped steel bar fixed to the bottom surface of the square ring component 5.

[0053] Or, if Fig.16 As shown, the rope ring 6 is an arc-shaped steel pipe fixed to the bottom surface of the square ring component 5.

[0054] Preferably, if Fig.15 , 16 As shown in , 17, the square ring component 5 includes a square ring body 501 and a threaded steel sleeve 502. The threaded steel sleeve 502 penetrates into the square ring body 501 from the upper part of the square ring body 501 and is welded and fixedly connected with the square ring body 501. The bottom end of the threaded steel sleeve 502 directly reaches the upper groove wall 503 of the square ring of the square ring body 501, and the internal threaded hole of the threaded steel sleeve 502 constitutes the internal threaded hole 8.

[0055] When constructing a single-layer steel cantilever scaffold foundation, fix the I-beam 1 on the lower hanging point floor D, so that the I-beam 1 floats out of the floor D, sleeve the square ring component 5 on the I-beam 1 that floats out of the floor D, screw the positioning screw 7 into the internal threaded hole 8 at the top of the square ring component 5, and press the end of the positioning screw 7 tightly against the upper part of the I-beam 1, thereby completing the components of the cantilever scaffold foundation.

[0056] Preferably, in order to further improve the firmness of the connection, fixing screws 9 are threadedly penetrated on both sides of the square ring member 5 .

[0057] When in use, after the square ring component 5 is sleeved on the I-beam 1 that floats out of the floor D, the screw 9 is relatively rotated so that the screw 9 is tightly pressed against the side of the I-beam 1, and the square ring component 5 is fixed on the I-beam 1 in cooperation with the positioning screw 7.

Claims

1. A cantilever scaffolding foundation connection mechanism, characterized in that: It includes a wire rope limiting structure arranged on the I-beam and a pole structure arranged on the I-beam. The wire rope limiting structure includes an inverted T-shaped groove component and a wire rope limiting component. The inverted T-shaped groove of the inverted T-shaped groove component matches the inverted T-shaped shape of the lower part of the I-beam. The lower part of the inverted T-shaped groove component is provided with a threaded through hole. The wire rope limiting component includes a screw rod and a ring fixed at the bottom end of the screw rod. The screw rod is screwed into the threaded through hole. The pole structure includes a T-shaped groove component and a positioning screw. The T-shaped groove of the T-shaped groove component matches the T-shaped shape of the upper part of the I-beam. A threaded hole is provided on the upper part of the T-slot component, and the positioning screw is screwed into the threaded hole. The T-slot component includes a T-slot component body and a threaded sleeve. The threaded sleeve penetrates into the T-slot component body from the upper part of the T-slot component body and is fixedly connected to the T-slot component body. The bottom end of the threaded sleeve reaches the upper groove wall of the T-slot of the T-slot component body. An I-beam connecting component is provided. The I-beam connecting component includes a pair of butt-jointed cards and a screw / nut that fixes the pair of butt-jointed cards. The card includes a limiting ring and a pair of pressing sheets, one end of which is hinged to the upper end of the limiting ring, and the other end is hinged to the upper end of the limiting ring. One end of the pressing plate is hinged to the lower end of the limiting ring, and the other end of the pressing plate is perforated. When building a cantilever scaffold, the I-beam is fixed on the lower hanging point floor so that the I-beam floats out of the floor, and the inverted T-shaped groove component of the wire rope limiting structure is sleeved on the lower part of the inverted T-shaped I-beam. The screw of the wire rope limiting component is screwed into the threaded perforation so that the end of the screw is tightly pressed against the lower part of the I-beam, thereby fixing the wire rope limiting structure under the I-beam. Then the T-shaped groove component of the vertical pole structure is sleeved on the upper part of the T-shaped I-beam, and the positioning screw is screwed into the threaded hole so that the positioning screw The end is pressed tightly on the upper part of the I-beam, and the vertical pole structure is fixed on the I-beam, thereby completing the construction of the cantilever scaffolding foundation. When building a double-layer steel cantilever scaffolding foundation, the lower I-beam is fixed on the lower hanging point floor, so that the lower I-beam floats out of the floor, and the wire rope limiting structure is fixed under the lower I-beam. The upper I-beam is placed at a set angle at the set position of the lower I-beam that floats out of the floor, and then a pair of cards are clamped at the intersection of the lower I-beam and the upper I-beam, and the two pressure plates of the card are relatively swung so that the limiting rings of the card are respectively against the lower I-beam. The parts below the perforated grooves of the two pressing plates of the card extend into the upper side wall of the inverted U-shaped recess of the lower I-beam and the lower side wall of the inverted U-shaped recess of the upper I-beam respectively, and the screw / nut fixes the pressing plate of one of the cards and the pressing plate of another card located in the positive projection direction of the pressing plate of one of the cards together through the perforated grooves on the pressing plates, thereby fixing the lower I-beam and the upper I-beam that are close to each other at a certain angle, and fixing the vertical pole structure on the upper I-beam, thereby completing the construction of the double-layer steel cantilever scaffolding foundation.

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