Supporting structure suitable for side-buried cantilevered scaffold pre-buried sleeve

Abstract

The utility model discloses a support structure suitable for side -buried type overhanging scaffold pre -buried sleeve, including pre -buried sleeve, pipe cap, upper support rod, support limit ring and lower support rod. Pre -buried sleeve adopts hard PVC material to be made, including the pipe body, cavity part, nut, the through -hole of pipe cap is from the hole -through of the corresponding place of outer shutter and is worn into the cavity part, and the radial limit of pre -buried sleeve front end is carried out, support limit ring is connected with pre -buried sleeve screw, and its top and bottom are fixedly provided with upper support rod and lower support rod respectively, and upper support rod top is equipped with lifting hook, and the lifting hook is hung on the upper reinforcing steel bar, and is fixed through steel wire and is tied up, and lower support rod bottom is fixed in the pouring cavity formed by the enclosure of outer shutter and inner shutter, and the support limit ring support positioning is positioned. The utility model's support structure can limit the movement of its pre -buried sleeve, guarantees not to disturb pre -buried sleeve in the concrete pouring process, improves its installation quality to reduce the potential safety hazard of side -buried type overhanging scaffold.

Description

Technical Field

[0001] The embodiments of this utility model belong to the field of cantilever scaffolding technology, and more specifically, relate to a support structure suitable for pre-embedded sleeves of side-buried cantilever scaffolding. Background Technology

[0002] Traditional cantilever scaffolding can damage the external floor structure when erecting and installing I-beams, especially causing significant damage to corners and balconies. In recent years, a new type of side-embedded cantilever scaffolding has emerged. This method involves pre-embedding a ring of embedded systems around the building. The embedded system consists of embedded sleeves and high-strength double-ended bolts. The embedded sleeves contain nuts at their ends. After the concrete has set, the double-ended high-strength bolts are connected to their internal nuts through the embedded sleeves. Once the concrete strength meets the requirements, I-beams are installed through the other end of the double-ended high-strength bolts, and finally, the external scaffolding is erected.

[0003] However, the pre-embedded sleeves of this new type of side-buried cantilever scaffolding are prone to disturbance during the concrete pouring process, causing them to deviate, tilt, or move horizontally. It is difficult to ensure that they are all perpendicular and evenly distributed with the structural surface when installing high-strength double-headed bolts, thus affecting the installation quality of the I-beams and posing safety hazards.

[0004] Therefore, there is an urgent need for a support structure suitable for the pre-embedded sleeves of side-buried cantilever scaffolding. This structure can restrict the movement of the pre-embedded sleeves, ensure that the pre-embedded sleeves are not disturbed during concrete pouring, improve the installation quality, and thus reduce the safety hazards of side-buried cantilever scaffolding. Summary of the Invention

[0005] In view of the problems that existing side-buried cantilever scaffolding pre-embedded sleeves are prone to disturbance during pouring, resulting in their displacement, tilting or horizontal movement, this utility model provides a support structure suitable for side-buried cantilever scaffolding pre-embedded sleeves to solve such problems.

[0006] To achieve the above objectives, this utility model provides a support structure suitable for pre-embedded sleeves in side-buried cantilever scaffolding, including a pre-embedded sleeve made of rigid PVC material, comprising a pipe body, a cavity portion disposed within the pipe body, and a nut disposed at the rear end of the pipe body; a pipe cap inserted into the cavity portion through a corresponding hole on the outer template, which blocks the front end of the pre-embedded sleeve and restricts the radial displacement of the front end of the pre-embedded sleeve; a support limiting ring threadedly connected to the pre-embedded sleeve, with an upper support rod and a lower support rod fixed at its top and bottom respectively; a hook at the top of the upper support rod, which is hooked onto the upper reinforcing bar and secured by steel wire; and the bottom of the lower support rod fixed within the casting cavity formed by the outer and inner templates, supporting and positioning the support limiting ring.

[0007] Furthermore, the central axis of the cavity coincides with the central axis of the nut, and the diameter of the cavity is larger than the diameter of the double-ended screw. The double-ended screw passes through the cavity and is threadedly connected to the nut.

[0008] Furthermore, the front end of the pre-embedded sleeve is fitted to the inner side of the outer template and aligned with the corresponding opening.

[0009] Furthermore, the support limiting ring is a steel ring with an internal thread on its inner ring, which is threaded to the external thread on the outer circumference of the tube body.

[0010] Furthermore, the upper support rod is a threaded telescopic rod, which includes a fixed rod and an adjusting rod. The bottom of the fixed rod is fixed to the support limiting ring by spot welding; the adjusting rod is threadedly connected to the fixed rod, and its top is provided with a hook.

[0011] Furthermore, the lower support rod is inclined outward, and its top is fixed to the bottom of the support limiting ring by welding. A support plate is fixed to its bottom end by welding. The support plate is made of thin steel plate, and its outer side is attached to the inner side of the outer template. The support plate is positioned and fixed on the outer template by using self-tapping screws to pass through the outer template and the support plate in sequence.

[0012] Furthermore, the lower support rod is arranged vertically, and a retaining ring is welded and fixed at its bottom. The retaining ring is engaged with the lower reinforcing bar and is secured by binding with steel wire.

[0013] In summary, compared with the prior art, the above-described technical solution conceived by this utility model can achieve the following beneficial effects:

[0014] (1) The support structure of this utility model can accurately limit the position and prevent deviation. The front end of the pre-embedded sleeve is radially limited by the pipe cap 4, and the rear end is radially and axially fixed with the upper and lower support rods. This effectively avoids disturbance, deviation or tilting of the pre-embedded sleeve during concrete pouring, ensures the verticality of the high-strength double-headed screw installation, and improves the installation quality of the I-beam.

[0015] (2) The support structure of this utility model has strong adaptability. It is adjustable by the thread of the support limiting ring. The upper support rod is a telescopic structure and the lower support rod can be set tilted or vertically (fixed by a retaining ring / support plate). It can flexibly adapt to different beam and slab heights, shear wall structures and steel reinforcement layouts, and reduce construction complexity.

[0016] (2) The support structure of this utility model, through the rigid PVC pre-embedded sleeve, combined with the upper support rod, support limiting ring and lower support rod to form a rigid support system, significantly reduces the installation deviation caused by sleeve displacement, eliminates the safety risk caused by unstable foundation of cantilever scaffolding from the source, and the structural components can be disassembled and recycled, which is economical and environmentally friendly. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the support structure in the first embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the support structure in the second embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram showing the connection between the support limiting ring and the upper and lower support rods in the second embodiment of this utility model;

[0020] Figure 4 This is a schematic diagram of the upper support rod in an embodiment of this utility model.

[0021] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1-outer template, 2-inner template, 3-embedded sleeve, 301-pipe body, 302-cavity part, 303-external thread part, 304-nut, 4-pipe cap, 5-hook, 6-upper reinforcing bar, 7-upper support rod, 701-fixing rod, 702-adjusting rod, 8-support limiting ring, 9-lower support rod, 10-self-tapping screw, 11-clamping ring, 12-support plate, 13-lower reinforcing bar. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model. Furthermore, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0023] like Figure 1-4As shown, this utility model provides a support structure for pre-embedded sleeves of side-buried cantilever scaffolding, including a pre-embedded sleeve 3, a cap 4, an upper support rod 7, a support limiting ring 8, and a lower support rod 9. The pre-embedded sleeve 3 is made of rigid PVC material and includes a pipe body 301, a cavity 302 located within the pipe body 301, and a nut 304 located at the rear end of the pipe body 301. The cap 4 passes through a corresponding hole on the outer template 1 into the cavity 302, blocking the front end of the pre-embedded sleeve 3 and simultaneously limiting its radial movement. The support limiting ring 8 is threadedly connected to the pre-embedded sleeve 3, and the upper support rod 7 and lower support rod 9 are fixedly mounted on its top and bottom, respectively. The top of the upper support rod 7 is provided with a hook 5, which is hooked onto the upper reinforcing bar 6 and secured with steel wire. The bottom of the lower support rod 9 is fixed within the casting cavity formed by the outer template 1 and the inner template 2, supporting and positioning the support limiting ring 8. The support structure of this utility model uses a pipe cap 4 to radially limit the front end of the pre-embedded sleeve 3, and the upper support rod 7 and lower support rod 9 to radially and axially limit and fix the rear end of the pre-embedded sleeve 3. This can restrict the movement of the pre-embedded sleeve, ensure that the pre-embedded sleeve is not disturbed during the concrete pouring process, improve its installation quality, and thus reduce the safety hazards of the side-buried cantilever scaffold.

[0024] In this embodiment of the utility model, the pre-embedded sleeve 3 is made of rigid PVC material, which has high mechanical strength and good corrosion resistance. After being threadedly connected with a high-strength screw, it provides stable support for the cantilevered I-beam. The pre-embedded sleeve 3 includes a cylindrical tube body 301, a cavity 302 disposed within the tube body 301, an externally threaded portion 303 disposed on the outer periphery of the tube body 301, and a nut 304 disposed at the rear end of the tube body 301. The externally threaded portion 303 is adapted to the internally threaded portion of the inner ring of the support limiting ring 8. Through the threaded connection, the position of the support limiting ring 8 on the tube body 301 can be adjusted. The central axis of the cavity 302 coincides with the central axis of the nut 304, and the diameter of the cavity 302 is larger than the diameter of the double-ended screw. The double-ended screw can pass through the cavity 302 and be threadedly connected to the nut 304.

[0025] The front end of the pre-embedded sleeve 3 is fitted to the inner side of the outer template 1 and aligned with the corresponding opening. The cap 4 is inserted through the opening to block the front end of the pre-embedded sleeve 3, preventing concrete slurry from entering the cavity 302. Furthermore, the outer diameter of the cap 4 is the same as the inner diameter of the opening, which prevents radial displacement of the front end of the pre-embedded sleeve 3 while restricting the radial displacement of the cap 4.

[0026] The supporting and limiting ring 8 is a steel ring with an internal thread on its inner ring, an upper supporting rod 7 fixedly mounted on the top of the outer ring, and a lower supporting rod 9 mounted on the bottom of the outer ring. The internal thread is threadedly connected to the external thread 303 on the outer circumference of the pipe body 301. The supporting and limiting ring 8 can be rotated to adjust its position on the pipe body 301, so that the supporting and limiting ring 8 is located below the upper reinforcing bar 6. The supporting and limiting ring 8 is finely adjusted so that the upper supporting rod 7 at the top is vertically upward, and the hook 5 at the top of the upper supporting rod 7 is hooked onto the upper reinforcing bar 6 (if there is still a gap between the upper supporting rod 7 and the upper reinforcing bar 6, the hook 5 can be bent to hook onto the upper reinforcing bar 6).

[0027] like Figure 4 As shown, the upper support rod 7 is a threaded telescopic rod, which includes a fixed rod 701 and an adjusting rod 702. The bottom of the fixed rod 701 is fixed to the support limiting ring 8 by spot welding. The adjusting rod 702 is threadedly connected to the fixed rod 701, and a hook 5 is provided at its top. By turning the adjusting rod 702, the length of the upper support rod 7 is adjusted so that the hook 5 at its top is flush with the upper steel bar 6 for subsequent hooking and wire binding and fixing operations.

[0028] like Figure 1 As shown, in the first embodiment of this utility model, the lower support rod 9 is adjusted according to the lower structure of the outer floor slab. If the beam slab is high or is a shear wall structure, the lower support rod 9 is bent to be inclined outward. Its top is fixed to the bottom of the support limiting ring 8 by welding, and its bottom end is fixed to a support plate 12 by welding. The support plate 12 is made of thin steel plate, and its outer side is attached to the inner side of the outer template 1. By using self-tapping screws 10 to pass through the outer template 1 and the support plate 12 in sequence, the support plate 12 is positioned and fixed on the outer template 1, so that the lower support rod 9 supports and limits the support limiting ring 8, and avoids disturbance at the rear end of the pre-embedded sleeve 3 when pouring concrete.

[0029] like Figure 2 As shown, in the second embodiment of this utility model, the lower support rod 9 is set vertically according to the lower height beam and slab reinforcement, and a retaining ring 11 is welded and fixed at its bottom. The retaining ring 11 is locked onto the lower reinforcement 13 and is fixed by steel wire, so that the lower support rod 9 supports and limits the support limiting ring 8, and avoids disturbance at the rear end of the pre-embedded sleeve 3 when pouring concrete.

[0030] The supporting structure of this utility model includes the following steps during construction:

[0031] Step 1. Draw a plan of the cantilevered I-beams. The spacing of the cantilevered I-beams should be the same as the span of the upper scaffold uprights.

[0032] Step 2: Locate the position of the pre-embedded sleeve 3 using the cantilevered I-beam plan;

[0033] Step 3: Accurately locate the position of the pre-embedded sleeve 3 on the template, and use a laser level to project a line to ensure that the pre-embedded sleeve 3 is on a straight line;

[0034] Step 4: Drill holes in the positioned outer template 1, and fit the open end of the pre-embedded sleeve 3 tightly against the inner side of the outer template 1. Then, install the pipe cap 4 on the outer side of the outer template 1 to fix it.

[0035] Step 5: Adjust the support limiting ring 8 on the pre-embedded sleeve 3 to the appropriate position;

[0036] Step 6: After adjusting the support limiting ring 8 to the appropriate position, rotate the adjusting rod 702 of the upper support rod 7 so that the hook 5 is hooked on the upper steel bar 6 and fixed with tie wire;

[0037] Step 7: Adjust the lower support rod 9; if the beam height is low, set the support rod 9 vertically so that its bottom retaining ring 11 is locked onto the lower reinforcing bar 13 and is fixed with steel wire; if the beam height is high or it is a shear wall structure, set the lower support rod 9 at an angle so that its bottom support plate 12 is in contact with the inner side of the outer formwork 1 and is fixed with self-tapping screws 10.

[0038] Step 8: Pour concrete, and after it has set, remove the pipe cap 4 and install the high-strength double-ended threaded rod.

[0039] Step 9: Install the cantilevered I-beam, and connect the cantilevered I-beam to the exposed end of the high-strength double-ended bolt;

[0040] Step 10: Install the external scaffolding;

[0041] Step 11: Dismantle the external scaffolding;

[0042] Step 12: Remove the cantilevered I-beams;

[0043] Step 13: Remove the high-strength double-ended screw:

[0044] Step 14: Grouting and sealing of the pre-embedded sleeve, and repair of the structural surface.

[0045] The support structure of this utility model can accurately limit and prevent deviation. The front end of the pre-embedded sleeve 4 is radially limited by the pipe cap 4, and the rear end is radially and axially fixed in conjunction with the upper and lower support rods. This effectively avoids disturbance, deviation or tilting of the pre-embedded sleeve 4 during concrete pouring, ensures the verticality of the high-strength double-headed screw installation, and improves the installation quality of the I-beam.

[0046] The support structure of this utility model has strong adaptability. It is adjustable by the thread of the support limiting ring, the upper support rod is a telescopic structure, and the lower support rod can be set tilted or vertically (fixed by a retaining ring / support plate). It can flexibly adapt to different beam and slab heights, shear wall structures and reinforcement layouts, and reduce construction complexity.

[0047] The support structure of this utility model, through the rigid PVC pre-embedded sleeve, combined with the upper support rod 7, the support limiting ring 8 and the lower support rod 9 to form a rigid support system, significantly reduces the installation deviation caused by sleeve displacement, eliminates the safety risks caused by unstable foundation of cantilever scaffolding from the source, and the structural components can be disassembled and recycled, which is economical and environmentally friendly.

[0048] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A support structure suitable for pre-embedded sleeves in side-buried cantilever scaffolding, characterized in that, include: The pre-embedded sleeve (3) located at the corresponding design position is made of rigid PVC material and includes a pipe body (301), a cavity (302) located in the pipe body (301), and a nut (304) located at the rear end of the pipe body (301). A cap (4) is provided at the corresponding position on the outer template (1) and inserted into the cavity (302) through the hole. It blocks the front end of the pre-embedded sleeve (3) and restricts the radial displacement of the front end of the pre-embedded sleeve (3). The support limiting ring (8) is threadedly connected to the pre-embedded sleeve (3), and its top and bottom are respectively fixed with an upper support rod (7) and a lower support rod (9); the top of the upper support rod (7) is provided with a hook (5), which is hooked on the upper steel bar (6) and tied and fixed by steel wire; the bottom of the lower support rod (9) is fixed in the casting cavity formed by the outer template (1) and the inner template (2) to support and position the support limiting ring (8).

2. The support structure for pre-embedded sleeves of side-buried cantilever scaffolding according to claim 1, characterized in that, The central axis of the cavity (302) coincides with the central axis of the nut (304), and the diameter of the cavity (302) is larger than the diameter of the double-ended screw. The double-ended screw passes through the cavity (302) and is threadedly connected to the nut (304).

3. The support structure for pre-embedded sleeves of side-buried cantilever scaffolding according to claim 1, characterized in that, The front end of the pre-embedded sleeve (3) is attached to the inner side of the outer template (1) and aligned with the corresponding opening.

4. A support structure suitable for pre-embedded sleeves of side-buried cantilever scaffolding according to any one of claims 1-3, characterized in that, The support limiting ring (8) is a steel ring with an internal thread on its inner ring, which is threaded to the external thread (303) on the outer circumference of the tube body (301).

5. A support structure suitable for pre-embedded sleeves of side-buried cantilever scaffolding according to any one of claims 1-3, characterized in that, The upper support rod (7) is a threaded telescopic rod, which includes a fixed rod (701) and an adjusting rod (702). The bottom of the fixed rod (701) is fixed to the support limiting ring (8) by spot welding. The adjusting rod (702) is threadedly connected to the fixed rod (701), and a hook (5) is provided at its top.

6. A support structure for pre-embedded sleeves of side-buried cantilever scaffolding according to any one of claims 1-3, characterized in that, The lower support rod (9) is inclined outward, and its top is fixed to the bottom of the support limiting ring (8) by welding. A support plate (12) is welded to its bottom end. The support plate (12) is made of thin steel plate, and its outer side is attached to the inner side of the outer template (1). By using self-tapping screws (10) to pass through the outer template (1) and the support plate (12) in sequence, the support plate (12) is positioned and fixed on the outer template (1).

7. A support structure for pre-embedded sleeves of side-buried cantilever scaffolding according to any one of claims 1-3, characterized in that, The lower support rod (9) is set in a vertical direction, and a retaining ring (11) is welded and fixed at its bottom. The retaining ring (11) is locked onto the lower reinforcing bar (13) and is fixed by binding with steel wire.

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