Support structure of plate type support of attached type lifting scaffold at high-low span

Abstract

The utility model discloses a structure high low span place attached type lifting scaffold board type support support structure, including high span board, low span board, the cantilever steel beam of attached type lifting scaffold board type support, the high board vertical bolt assembly of vertical preburied in high span board, low board vertical bolt assembly and low span steel support structure of vertical preburied in low span board, and low span steel support structure includes support roof, vertical adjusting sleeve, vertical adjusting screw and support bottom plate. The utility model selects steel as device material, and support roof and vertical adjusting sleeve are as support point, and the height adaptation of adjustable device is realized by spiral rotation, and the leveling control is realized by matching inlaying bubble simultaneously.

Description

Technical Field

[0001] This utility model belongs to the field of attached scaffolding, and in particular, it is a plate support structure for attached lifting scaffolding with varying heights and spans. Background Technology

[0002] The cantilevered steel beams of the attached lifting scaffold's plate-type unloading supports and lifting supports are cantilever beam structures formed by I-beams or double-channel steel. They are key load-bearing components that transfer the scaffold load to the main building structure. One end of the cantilevered steel beam has a pre-installed connection interface with the attached lifting scaffold, evenly transferring the scaffold load to the steel beam. The other end cantilevered out and rigidly connects to the main building structure, such as concrete beams, floor slab embedded parts, or other horizontal structural elements, transferring the scaffold load through the steel beam to the main building structure.

[0003] However, in many special structural parts, such as when the horizontal structure of a building has stepped spans of varying heights, the cantilevered steel beams only partially overlap the higher span members. The lower span requires additional support to prevent stress concentration at the bottom of the cantilevered steel beams at the transition point between the higher and lower spans. Existing support methods typically use timber or cut I-beams, stacked to temporarily fill the height difference in the lower span area. This method generally has the following problems: 1. The support effect is poor. The rigidity and strength of the timber are low. It is easy to deform or even break when subjected to downward pressure, which poses a safety hazard. Second, the use of I-beams for support allows for greater flexibility in on-site cutting, making it difficult for the height of the I-beams to fully meet the height difference requirements of the high and low spans. Furthermore, when multiple I-beams are stacked, they are prone to slippage and instability, posing a safety hazard. Third, it can easily lead to arbitrary cutting of materials on site, resulting in a large amount of material waste. Timber is often not reusable after use, and arbitrary cutting of I-beams on site will also increase material loss and increase project costs.

[0004] Therefore, there is an urgent need for a reusable, reliable support device that can be adapted to different height differences between spans, in order to solve the problems existing in the prior art. Utility Model Content

[0005] The purpose of this utility model is to provide a structural support structure for attached lifting scaffolding with varying heights and spans, which aims to solve the technical problems of existing wooden or I-beam padding, such as safety hazards, difficulty in adapting to height difference requirements, inability to reuse materials, and increased project costs.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A structural support structure for attached lifting scaffolding at varying heights includes: Horizontal concrete structures with varying spans, including high-span slabs and low-span slabs; The cantilevered steel beam of the attached lifting scaffold plate support is connected to the scaffold frame at one end, and the other end is cantilevered at the position of the high and low span horizontal structure and the bottom surface rests on the high span plate. A fixed steel bolt structure is provided, corresponding to the cantilevered steel beam and installed along the beam direction, including a high plate vertical bolt assembly perpendicular to the high span plate and a low plate vertical bolt assembly perpendicular to the low span plate; the cantilevered steel beam is detachably connected to the high span plate via the high plate vertical bolt assembly, and the cantilevered steel beam is detachably connected to the low span plate via the low plate vertical bolt assembly. The low-span steel support structure, located in the same space as the low-span vertical bolt assembly and supported between the suspended cantilever steel beam and the low-span slab, includes: a support top plate, which is pressed against the bottom surface of the cantilever steel beam, with its top surface flush with the top surface of the high-span slab, and has a through hole for the low-span vertical bolt assembly to pass through; vertical adjusting sleeves, symmetrically arranged on the bottom side of the support top plate, with their top ends fixedly connected to the bottom surface of the support top plate; a vertical adjusting screw, which cooperates with the vertical adjusting sleeve to rotate and adjust the position of the support top plate, and has an external thread that matches the internal thread of the vertical adjusting sleeve; and a support bottom plate, which rests on the bottom surface of the vertical adjusting screw.

[0007] Two parallel cantilever steel beams are arranged in one row. Each row includes two spaced sub-beams and ribs connecting the sub-beams. The spaced sub-beams are separated by a beam diaphragm. Each cantilever steel beam is equipped with a high plate vertical bolt assembly and a low plate vertical bolt assembly aligned longitudinally along the beam.

[0008] Two rows of vertical adjusting sleeves are symmetrically spaced along the length of the supporting top plate. Each row has three sleeves at the corners and the middle on both the left and right sides. Through holes are set on the supporting top plate between the two rows of vertical adjusting sleeves and above the beam mid-section.

[0009] The supporting top plate spans two cantilevered steel beams, extending beyond the outer edges of the two cantilevered steel beams on both sides. The extended portion contains two symmetrical flatness level bubbles.

[0010] The vertical bolt assembly of the high plate includes, from bottom to top, a high plate base plate, a high plate threaded rod, a high plate pad, and a high plate nut. The bottom of the high plate base plate and the high plate threaded rod are embedded in the high span plate, and the high plate base plate is flush with the bottom surface of the high span plate. The width of the high plate pad is greater than the beam width of the cantilever steel beam. The high plate threaded rod passes through the corresponding beam midsegment and the center of the high plate pad and is fastened by the high plate nut.

[0011] The low plate vertical bolt assembly consists of a low rod base plate, a low plate bolt, a low rod pad, and a low rod nut from bottom to top. The bottom of the low rod base plate and the low plate bolt are embedded in the low span plate, and the low rod base plate is flush with the bottom surface of the low span plate. The width of the low rod pad is greater than the beam width of the cantilever steel beam. The low plate bolt passes through the corresponding through hole, the beam septum, and the center of the low rod pad, and is fastened by the low rod nut.

[0012] The internal thread length of the vertical adjusting sleeve exceeds the external thread length of the vertical adjusting screw. The thread helix angles of both the vertical adjusting screw and the vertical adjusting sleeve are less than the equivalent friction angle, thus enabling self-locking of the threaded connection between the two.

[0013] Both the high-rod nut and the low-rod nut are double nuts.

[0014] Compared with the prior art, this utility model has the following features and beneficial effects: This utility model has the following features: I. Reliable and Safe Support: Using steel as the main material, it has sufficient rigidity and strength, and achieves the support function by transmitting and resisting sufficient vertical loads; the support top plate is used as the support platform for the cantilever steel beam, and the level bubble is used to ensure the flatness of the support steel beam; in particular, the thread helix angle of the vertical adjusting screw and the vertical adjusting sleeve is less than the equivalent friction angle to achieve the screw self-locking function, further realizing the frictional fastening between the support base plate and the structural floor slab, ensuring reliable force transmission, avoiding device slippage or instability, and eliminating the safety hazards of traditional support methods.

[0015] 2. High adjustability: By utilizing the threaded transmission of the vertical adjusting screw and the vertical adjusting sleeve, stepless adjustment can be achieved. The position of the supporting top plate can be flexibly adjusted according to the height difference of different structural spans, so that the low-span steel support structure can adapt to various high and low span working conditions, solving the problem that the height of traditional support materials is difficult to adapt. At the same time, the low-span steel support structure can also be reliably connected to the cantilever steel beam through adjustment.

[0016] 3. Easy turnover and low loss: The low-span steel support structure of this utility model can be prefabricated into a fixed finished product. The structure is simple and easy to disassemble and assemble. After construction, it can be completely dismantled and reused, avoiding the situation of traditional timber, I-beams and other materials being used once or wasted by cutting, thus reducing material loss and reducing project costs.

[0017] IV. Easy to operate: The installation and adjustment process is simple. The height can be adjusted by rotating the adjustable screw. The flatness of the supporting top plate can be quickly judged by centering the bubble level. No complicated construction process or professional technicians are required, which improves construction efficiency.

[0018] V. Low cost: The device has a simple structure, the required materials are common and easy to process and manufacture, resulting in low manufacturing costs. At the same time, its reusability further reduces the overall cost of the project, making it economical and practical.

[0019] The vertical load transmission path of this utility model is transmitted from the cantilever steel beam to the supporting top plate, then through the supporting top plate to the sleeve, vertical adjusting screw, supporting bottom plate, and finally reliably to the horizontal concrete structure with high and low spans. Attached Figure Description

[0020] The present invention will now be described in further detail with reference to the accompanying drawings.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] Figure 2 yes Figure 1 Another perspective diagram.

[0023] Figure 3 yes Figure 1 A diagram showing the upward viewing angle.

[0024] Figure 4 This is a schematic diagram showing the completion of the first construction step.

[0025] Figure 5 This is a schematic diagram showing the completion of construction step three.

[0026] Figure 6 yes Figure 5 Another perspective diagram.

[0027] Figure 7 This is a schematic diagram showing the completion of construction step four.

[0028] Figure 8 This is a schematic diagram showing the completion of construction step five.

[0029] Figure reference numerals: 1-Cantilever steel beam, 11-Branch beam, 12-Rib plate, 2-High span plate, 3-Low span plate, 4-High plate vertical bolt assembly, 41-High pole base plate, 42-High plate threaded rod, 43-High pole pad plate, 44-High pole nut, 5-Low plate vertical bolt assembly, 51-Low pole base plate, 52-Low plate threaded rod, 53-Low pole pad plate, 54-Low pole nut, 6-Support top plate, 7-Vertical adjusting sleeve, 8-Vertical adjusting threaded rod, 9-Support base plate, 10-Through hole, 20-Beam diaphragm, 30-Flatness level bubble. Detailed Implementation

[0030] See the examples. Figure 1-3 As shown, a type of plate-type support structure for a vertically and horizontally attached lifting scaffold includes: A horizontal concrete structure with high and low spans, including high-span slab 2 and low-span slab 3; The cantilevered steel beam 1 of the attached lifting scaffold plate support is connected to the scaffold frame at one end, and the other end is cantilevered at the position of the high and low span horizontal structure and the bottom surface rests on the high span plate 2. A fixed steel bolt structure is provided, corresponding to the cantilever steel beam 1 and installed along the beam direction, including a high plate vertical bolt assembly 4 perpendicular to the high span 2 and a low plate vertical bolt assembly 5 perpendicular to the low span 3; the cantilever steel beam 1 is detachably connected to the high span 2 through the high plate vertical bolt assembly 4, and the cantilever steel beam 1 is detachably connected to the low span 3 through the low plate vertical bolt assembly 5. The low-span steel support structure, located in the same space as the low-span vertical bolt assembly 5, is supported between the suspended cantilever steel beam 1 and the low-span slab 3. It includes: a support top plate 6, which is pressed against the bottom surface of the cantilever steel beam 1, with its top surface flush with the top surface of the high-span slab 2, and has a through hole 10 for the low-span vertical bolt assembly 5 to pass through; vertical adjusting sleeves 7, symmetrically arranged on the bottom side of the support top plate 6, with their top ends fixedly connected to the bottom surface of the support top plate 6; and a vertical adjusting screw 8, which cooperates with the vertical adjusting sleeve 7 to rotate and adjust the position of the support top plate 6, and has an external thread adapted to the internal thread of the vertical adjusting sleeve 7. Furthermore, the length of the internal thread of the vertical adjusting sleeve 7 exceeds the length of the external thread of the vertical adjusting screw 8, and the thread helix angles of both the vertical adjusting screw 8 and the vertical adjusting sleeve 7 are less than the equivalent friction angle, providing self-locking positioning for their threaded connection. A support bottom plate 9 rests on the bottom surface of the vertical adjusting screw 8.

[0031] In this embodiment, two parallel cantilever steel beams 1 are arranged. Each beam includes two spaced sub-beams 11 and a rib plate 12 connecting the sub-beams 11. The spaced sub-beams 11 are separated by a beam partition 20. Each cantilever steel beam 1 is provided with a high plate vertical bolt assembly 4 and a low plate vertical bolt assembly 5 aligned longitudinally along the beam.

[0032] Two rows of vertical adjusting sleeves 7 are symmetrically arranged along the length of the supporting top plate 6. Each row has three rows at the corners and the middle on both sides, for a total of six rows. Through holes 10 are located on the supporting top plate 6, above the beam spacer 20, between the two rows of vertical adjusting sleeves 7. That is, the two rows of vertical adjusting sleeves 7 and the lower plate vertical bolt assembly 5 are staggered in the front and back direction to ensure that there is no mutual interference between the adjusting sleeves 7 and the lower plate vertical bolt assembly 5 when adjusting them.

[0033] The supporting top plate 6 spans across two cantilevered steel beams 1, and its length extends beyond the outer edges of the left and right sides of the two cantilevered steel beams 1. The extended part is embedded with two left and right symmetrical flatness level bubbles 30.

[0034] The vertical bolt assembly 4 of the high plate includes, from bottom to top, a high rod base plate 41, a high plate screw 42, a high rod pad 43, and a high rod nut 44. The bottom of the high rod base plate 41 and the high plate screw 42 are embedded in the high span plate 2, and the high rod base plate 41 is flush with the bottom surface of the high span plate 2. The width of the high rod pad 43 is greater than the beam width of the cantilever steel beam 1. The high plate screw 42 passes through the corresponding beam diaphragm 20 and the center of the high rod pad 43 and is fastened by the high rod nut 44.

[0035] The low plate vertical bolt assembly 5 includes, from bottom to top, a low rod base plate 51, a low plate screw 52, ​​a low rod pad 53, and a low rod nut 54. The bottom of the low rod base plate 51 and the low plate screw 52 are embedded in the low span plate 3, and the low rod base plate 51 is flush with the bottom surface of the low span plate 3. The width of the low rod pad 53 is greater than the beam width of the cantilever steel beam 1. The low plate screw 52 passes through the corresponding through hole 10, the beam diaphragm 20, and the center of the low rod pad 53 and is fastened by the low rod nut 54.

[0036] Both the high-rod nut 44 and the low-rod nut 54 are double nuts.

[0037] The specific structural dimensions of this embodiment are as follows: The vertical adjusting sleeve 7 has an inner diameter of 50mm, a length of 200mm, and an internal thread length of 180mm. The supporting top plate 6 is made of Q235 steel, with dimensions of 400mm×200mm×10mm and an upper surface flatness error ≤0.5mm / m. The vertical adjusting screw 8 has an outer diameter of 48mm, a length of 250mm, an external thread length of 150mm, a thread helix angle of 10 degrees, and an equivalent friction angle of 12 degrees, meeting the self-locking condition. The supporting bottom plate 9 is made of Q235 steel, with dimensions of 250mm×250mm×12mm. The lower surface can be provided with a diamond-shaped anti-slip texture with a depth of 1.5mm. The high plate screw 42 and the low plate screw 52 are both 20mm in diameter and 300mm in length. Two screws are set for each cantilever steel beam. The dimensions of the high rod pad 43 and the low rod pad 53 are 80mm×80mm×8mm. The length of the cantilever steel beam 1 is 1.5m.

[0038] The supporting top plate 6 is fixed to the top of the vertical adjusting sleeve 7 by welding. The welding height is 8mm and it is a full weld. Grooves are opened on the upper surface of the left and right ends of the supporting top plate 6. The flatness level bubble 30 is made of glass and filled with kerosene. The bubble diameter is 5mm. The bottom of the vertical adjusting screw 8 is fixed to the supporting bottom plate 9 by welding. The welding height is 10mm and it is a full weld. The high plate screw 42 and the low plate screw 52 pass through the pre-set rectangular through hole 10 on the supporting top plate 6. The cantilever steel beam 1 is placed on the upper surface of the supporting top plate 6 and the high span plate 2. They are locked by tightening the low rod pad 53 and the low rod nut 54, and the high rod pad 43 and the high rod nut 44, respectively.

[0039] The construction steps in this embodiment are as follows: Step 1, Construction Preparation: When constructing the high-span slab 2 and the low-span slab 3, embed the high-span bolt 42 and the low-span bolt 52 according to the design positions, or drill safety holes later to insert the bolts. See [link / reference]. Figure 4 As shown.

[0040] Step two: Assemble the low-span steel support structure.

[0041] Step 3: Align the through holes 10 of the top support plate 6 with the lower plate screws 52 and pass them through. The bottom support plate 9 is placed on the lower span plate 3. Based on the height difference between the upper span plate 2 and the lower span plate 3 (180mm in this embodiment), manually or with the aid of a wrench, rotate each vertical adjusting screw 8. Adjust the height of the top support plate 6 using the threaded transmission between the vertical adjusting sleeve 7 and the vertical adjusting screw 8. Stop adjusting when the top support plate 6 and the upper span plate 2 are at the same height. In particular, the thread helix angle of both the vertical adjusting sleeve 7 and the vertical adjusting screw 8 is less than the equivalent friction angle. Based on the self-locking principle of screw transmission, this further ensures that the vertical adjusting screw 8 will not rotate on its own under load, ensuring that the height and level of the top support plate 6 remain stable and preventing displacement or instability of the cantilever steel beam. See [link to relevant documentation]. Figure 5 As shown.

[0042] Step four: Place the cantilever steel beam 1 on the upper surfaces of the supporting top plate 6 and the high-span slab 2, and check the fit. If there are any gaps, manually or with the aid of a wrench, fine-tune each vertical adjusting screw 8, while simultaneously observing the flatness level bubble 30 on both sides, until it is ensured that there are no gaps between the cantilever steel beam 1 and the supporting top plate 6 and the level bubble is centered. (See [link to relevant documentation]). Figure 6 As shown.

[0043] Step 5: Insert the low rod pad 53 and low rod nut 54 onto the low plate screw 52, ​​and the high rod pad 43 and high rod nut 44 onto the high plate screw 42. Tighten the nuts with a torque wrench. Through the clamping force between the nuts and washers, the cantilever steel beam is locked and secured to the supporting top plate 6, completing the structural assembly, i.e., fixing the cantilever steel beam 1. See [link to documentation]. Figure 7 As shown.

[0044] The vertical load borne by the cantilever steel beam, including the self-weight of the scaffolding and the construction load, is first partially transferred to the upper span slab 2, and the other part is transferred to the supporting top slab 6 that is in contact with it at the suspended position. The supporting top slab 6 transfers the load to the vertical adjusting sleeve 7. The vertical adjusting sleeve 7 transfers the load to the vertical adjusting screw 8 through the threaded connection. The vertical adjusting screw 8 then transfers the load to the supporting bottom slab 9. The supporting bottom slab 9 contacts the lower span slab 3, and finally reliably transfers the load to the main structure of the building, realizing the stable support of the cantilever steel beam.

[0045] Step 6: After the attached lifting scaffolding has been used, first remove the low pole pad 53, low pole nut 54, and high pole pad 43 and high pole nut 44; rotate the vertical adjusting screw 8 to lower the overall height of the low span steel support structure, and remove the support top plate 6 from the vertical adjusting screw 8; clean the dust and debris from the surface of each component of the structure, and store it in a dry warehouse for use in subsequent projects.

[0046] The support structure in this embodiment successfully solves the support problem of cantilevered steel beams in scenarios with a height difference of 180mm between high and low spans. The support is stable, easy to operate, and can be reused. Compared with the traditional timber support method, material loss is reduced and construction efficiency is improved, which has significant practical and economic value.

Claims

1. A structural support structure for a suspended scaffold with varying heights and spans, characterized in that, include: A horizontal concrete structure with high and low spans, including a high-span slab (2) and a low-span slab (3). The cantilevered steel beam (1) of the attached lifting scaffold plate support is connected to the scaffold frame at one end and cantilevered at the high and low span horizontal structure position at the other end and the bottom surface rests on the high span plate (2). The fixed steel bolt structure is provided in the direction of the cantilever steel beam (1) and includes a high plate vertical bolt assembly (4) perpendicular to the high span plate (2) and a low plate vertical bolt assembly (5) perpendicular to the low span plate (3); the cantilever steel beam (1) is detachably connected to the high span plate (2) through the high plate vertical bolt assembly (4) and the cantilever steel beam (1) is detachably connected to the low span plate (3) through the low plate vertical bolt assembly (5); The low-span steel support structure, located in the same space as the low-span vertical bolt assembly (5) and supported between the suspended cantilever steel beam (1) and the low-span plate (3), includes: a support top plate (6), which is pressed against the bottom surface of the cantilever steel beam (1), with its top surface flush with the top surface of the high-span plate (2), and has a through hole (10) for the low-span vertical bolt assembly (5) to pass through; a vertical adjusting sleeve (7), which is symmetrically arranged on the bottom side of the support top plate (6), with its top end fixedly connected to the bottom surface of the support top plate (6); a vertical adjusting screw (8), which cooperates with the vertical adjusting sleeve (7) to rotate and adjust the position of the support top plate (6), and has an external thread that is compatible with the internal thread of the vertical adjusting sleeve (7); and a support bottom plate (9), which rests on the bottom surface of the vertical adjusting screw (8).

2. The structural support structure for attached lifting scaffolding at varying heights according to claim 1, characterized in that: Two parallel cantilever steel beams (1) are provided, each including two spaced sub-beams (11) and a rib plate (12) connecting the sub-beams (11). The spaced sub-beams (11) are separated by a beam partition (20). Each cantilever steel beam (1) is provided with a high plate vertical bolt assembly (4) and a low plate vertical bolt assembly (5) aligned with the beam from front to back.

3. The structural support structure for attached lifting scaffolding at varying heights according to claim 2, characterized in that: Two rows of vertical adjustment sleeves (7) are symmetrically arranged along the length of the supporting top plate (6). Each row has three rows at the corners and the middle on the left and right sides. The through holes (10) are set on the supporting top plate (6) between the two rows of vertical adjustment sleeves (7) and above the beam partition (20).

4. The structural support structure for attached lifting scaffolding at varying heights as described in claim 2, characterized in that: The supporting top plate (6) spans two cantilever steel beams (1), and its length extends beyond the outer edges of the left and right sides of the two cantilever steel beams (1). The extended part is embedded with two left and right symmetrical flatness level bubbles (30).

5. The structural support structure for attached lifting scaffolding at varying heights according to claim 3, characterized in that: The high plate vertical bolt assembly (4) includes, from bottom to top, a high rod base plate (41), a high plate screw (42), a high rod pad (43), and a high rod nut (44). The bottom of the high rod base plate (41) and the high plate screw (42) are embedded in the high span plate (2), and the high rod base plate (41) is flush with the bottom surface of the high span plate (2). The width of the high rod pad (43) is greater than the beam width of the cantilever steel beam (1). The high plate screw (42) passes through the corresponding beam diaphragm (20) and the center of the high rod pad (43) and is fastened by the high rod nut (44).

6. The structural support structure for attached lifting scaffolding at varying heights according to claim 3 or 5, characterized in that: The low plate vertical bolt assembly (5) includes, from bottom to top, a low rod base plate (51), a low plate screw (52), a low rod pad (53), and a low rod nut (54); the bottom of the low rod base plate (51) and the low plate screw (52) are embedded in the low span plate (3), and the low rod base plate (51) is flush with the bottom surface of the low span plate (3). The width of the low rod pad (53) is greater than the beam width of the cantilever steel beam (1). The low plate screw (52) passes through the corresponding through hole (10), the beam partition (20), and the center of the low rod pad (53) and is fastened by the low rod nut (54).

7. The structural support structure for attached lifting scaffolding at varying heights according to claim 1, characterized in that: The internal thread length of the vertical adjusting sleeve (7) exceeds the external thread length of the vertical adjusting screw (8). The thread helix angles of both the vertical adjusting screw (8) and the vertical adjusting sleeve (7) are less than the equivalent friction angle, thus enabling self-locking of the threaded connection between the two.

8. The structural support structure for attached lifting scaffolding at varying heights as described in claim 6, characterized in that: Both the high-rod nut (44) and the low-rod nut (54) are double nuts.

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