Attached lifting scaffold

Abstract

The utility model discloses an attached type lifting scaffold, which belongs to the technical field of building construction and comprises a scaffold body and a horizontal support truss arranged at the bottom of the scaffold body, and the scaffold body is formed by splicing a plurality of first outer vertical rods, first inner vertical rods and first cross rods; the horizontal supporting truss is formed by splicing a plurality of second outer vertical rods, second inner vertical rods, second transverse rods and longitudinal rods, and two crossed inclined rods are further arranged in a frame formed by the second outer vertical rods and the second transverse rods and a frame formed by the second inner vertical rods and the second transverse rods respectively. The first outer vertical rod, the first inner vertical rod, the second outer vertical rod and the second inner vertical rod are all made of aluminum alloy, and the first transverse rod, the second transverse rod, the longitudinal rod and the inclined rod are all made of steel. The steel attached lifting scaffold solves the problems that an existing steel attached lifting scaffold is high in production cost, large in construction difficulty and prone to causing damage to buildings.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to an attached lifting scaffold. Background Art

[0002] At present, in the construction of the main structure of high-rise and super-high-rise residential and office buildings, the external protection frame mostly adopts the attached lifting scaffolding. The main reason is that compared with the traditional scaffolding, the attached lifting scaffolding has higher construction efficiency, better economic benefits and better safety effects; at the same time, the climbing of the attached lifting scaffolding completely depends on its own power equipment, and the climbing efficiency is much higher than the traditional scaffolding. And its consumables are only about one-tenth of the traditional scaffolding, and the number of construction personnel can also be greatly reduced, which not only saves a lot of materials and construction costs, but also reduces the safety hazards caused by the large number of construction personnel. Therefore, the attached lifting scaffolding has been widely used in actual projects.

[0003] From the existing situation, the main material of the attached lifting scaffold is steel, but steel is prone to corrosion and needs to be rust-proofed, resulting in high production costs. In addition, its large deadweight during construction is also prone to damage to the building, increasing the difficulty of construction. Therefore, it is necessary to improve the existing steel attached lifting scaffold to solve the above problems. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the utility model provides an attached lifting scaffold.

[0005] The technical solution adopted by the utility model is as follows:

[0006] An attached lifting scaffold comprises a frame body and a horizontal supporting truss arranged at the bottom of the frame body, wherein the frame body is formed by splicing a plurality of first outer uprights, a first inner uprights and a first cross bar; the horizontal supporting truss is formed by splicing a plurality of second outer uprights, a second inner uprights, a second cross bar and a longitudinal bar, and two mutually intersecting oblique bars are further arranged in the frames respectively formed by the second outer uprights and the second cross bar, and the second inner uprights and the second cross bar; the first outer uprights, the first inner uprights, the second outer uprights and the second inner uprights are all made of aluminum alloy, and the first cross bar, the second cross bar, the longitudinal bar and the oblique bar are all made of steel.

[0007] Furthermore, a plurality of "Z"-shaped vertical support members are sequentially arranged at intervals from top to bottom on both sides of the frame, and all of the "Z"-shaped vertical support members are simultaneously connected to the first outer vertical rod and the first inner vertical rod.

[0008] Furthermore, a protective frame is provided on the outer facade of the frame.

[0009] Furthermore, a support plate is also arranged on the first cross bar.

[0010] As a preference, the support plate is made of aluminum alloy, and reinforcing ribs are provided at the bottom of the support plate.

[0011] Furthermore, guide rails for installing an anti-fall device are provided on both sides of the inner facade of the frame.

[0012] As a preference, the guide rail is made of steel.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] (1) The frame of the utility model adopts a combination of aluminum alloy and steel to make the outer poles, inner poles and cross bars, and improves the structure of the horizontal support truss. In this way, under the premise of ensuring the overall strength and rigidity of the scaffolding, the utility model has largely solved the problems of heavy weight, high production cost and great construction difficulty of the steel attached lifting scaffolding, and has largely achieved the lightweight of the scaffolding and reduced damage to the building, while also improving the overall deformation resistance and stability of the scaffolding.

[0015] (2) The utility model arranges a plurality of "Z"-shaped vertical support members at intervals on both sides of the frame in the vertical direction. Combined with the design of the frame and the horizontal support trusses, it not only ensures the anti-deformation ability of the scaffolding in the vertical direction, but also takes into account the convenience of construction.

[0016] (3) In the present invention, the support plate is made of aluminum alloy, and a reinforcing rib is provided at the bottom of the support plate, which can avoid the problems of easy corrosion and heavy weight of the traditional steel support plate, and make up for the defect of insufficient bending resistance of the aluminum alloy support plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of an embodiment of the utility model.

[0018] Figure 2 This is a stress simulation result diagram of the frame under the most unfavorable load in the embodiment of the utility model.

[0019] Figure 3 This is a diagram of the overall displacement simulation results of the frame under the most unfavorable load in the embodiment of the utility model.

[0020] Figure 4 The figure is a schematic diagram of the structure of an existing horizontal support truss.

[0021] Figure 5 It is a structural schematic diagram of another existing horizontal support truss.

[0022] Figure 6 The figure is a schematic diagram of the structure of an existing vertical support member.

[0023] Figure 7 It is a schematic diagram of the structure of the protective frame in the embodiment of the utility model.

[0024] In the figure, the names of the components corresponding to the reference numerals are as follows:

[0025] 1-first outer pole, 2-first inner pole, 3-protective frame, 4-first cross bar, 5-"Z"-shaped vertical support, 6-support plate, 7-guide rail, 8-second outer pole, 9-second inner pole, 10-second cross bar, 11-longitudinal rod, 12-diagonal rod. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with the accompanying drawings and embodiments. The present invention includes but is not limited to the following embodiments.

[0027] Example

[0028] This embodiment provides an attached lifting scaffold, which is used in building construction, such as the main structure construction of high-rise and super high-rise residential and office buildings. Figure 1 As shown, the structure of this embodiment is mainly composed of a frame, a horizontal supporting truss and a guide rail, wherein the frame is the main load-bearing component of the entire scaffolding, which not only needs to have sufficient strength and rigidity, but also reducing its own weight has a positive effect on the lightweight of the entire scaffolding and the improvement of construction efficiency. Therefore, in this embodiment, the frame is spliced ​​by a plurality of first outer poles 1, first inner poles 2 and a first cross bar 4, and the first outer poles 1 and the first inner poles 2 are both made of aluminum alloy, and the first cross bar 4 is made of steel. The purpose of lightweighting and improving construction efficiency is achieved through the combination of aluminum alloy and steel.

[0029] The mechanical properties of the frame are analyzed below to verify its strength and stiffness. When the frame is in use, the entire load of the frame is transmitted to the building by the wall support. At this time, the stress and overall displacement of the frame under the most unfavorable load (including wind load) are as follows: Figure 2 , 3 shown.

[0030] According to the simulation results, the maximum stress value of the frame during the use stage appears in the middle of the frame, which is 115.9MPa, which meets the requirement of "General Specification for Construction Scaffolding" (GB 55023-2022) that it should not exceed 200MPa; the maximum displacement is located at the top of the frame, which is 18mm, which also meets the requirement of less than 30mm. Therefore, the frame structure designed in this embodiment is feasible.

[0031] The horizontal support truss is set at the bottom of the frame to support the frame. As the main structure to bear the vertical load, the stiffness of the horizontal support truss has an important influence on the stability of the frame. Figure 1 As shown, in this embodiment, the horizontal support truss is composed of a plurality of second outer rods 8, second inner rods 9, second crossbars 10 and longitudinal rods 11, and two mutually intersecting diagonal rods 12 are provided in the frames formed by the second outer rods 8 and the second crossbars 10, and the second inner rods 9 and the second crossbars 10. Furthermore, in order to ensure the overall strength of the horizontal support truss, and to match the material of the frame and achieve the goal of lightweight, the second outer rods 8 and the second inner rods 9 are also made of aluminum alloy, while the second crossbars 10, the longitudinal rods 11 and the diagonal rods 12 are all made of steel.

[0032] Figure 4 , 5 Two existing horizontal support trusses are shown, and Table 1 is a performance comparison result between the horizontal support truss designed in this embodiment and the two existing horizontal support trusses:

[0033] Horizontal support truss Maximum stress (MPa) Maximum displacement(mm) The horizontal support truss designed in this embodiment 10.9 0.26 Figure 4 Horizontal support truss shown (truss 1) 12.4 0.24 Figure 5 Horizontal support truss shown (Truss 2) 15.3 0.56

[0034] Table 1

[0035] According to the results in Table 1, it can be seen that the stiffness of the horizontal support truss and truss 1 designed in this embodiment is increased by 53% and 57% respectively compared with the stiffness of truss 2, indicating that the horizontal support truss and truss 1 designed in this embodiment have stronger anti-deformation capabilities than truss 2. Furthermore, although the anti-deformation capability of truss 1 is the strongest among the three, excessive stiffness will have an adverse effect on the entire scaffolding, and truss 1 also has problems of inconvenience in construction and consumables compared with the horizontal support truss designed in this embodiment. Therefore, taking all factors into consideration, the horizontal support truss designed in this embodiment is the most feasible and economical among the three.

[0036] The guide rail 7 is arranged on both sides of the inner facade of the frame, and is used to install the anti-falling device. The existing anti-falling device is usually composed of an anti-falling device arranged in a wall-mounted support and an anti-falling strip welded on the guide rail. When the frame falls unexpectedly, the frame accelerates to slide down, and the anti-falling strip continues to slide down with the guide rail. When the anti-falling strip leaves the trigger block, before the anti-falling device has time to reset, the next anti-falling strip will hit the upper surface of the brake block, and the brake block will withstand the anti-falling strip, thereby limiting the guide rail and the frame from continuing to move downward, achieving the effect of anti-falling braking. It can be seen that, since the guide rail will bear a large impact force when an accident occurs, in the present embodiment, the guide rail 7 is preferably made of steel.

[0037] In addition, in the vertical direction of the framework, a number of "Z"-shaped vertical support members 5 are sequentially arranged at intervals from top to bottom on both sides of the framework. All the "Z"-shaped vertical support members are simultaneously connected to the first outer vertical rod 1 and the first inner vertical rod 2, as Figure 1 shown. The reason for adopting the method of arranging multiple "Z"-shaped vertical support members at intervals is as follows: Simply speaking in the vertical direction of the framework, compared with the existing vertical support members (as Figure 6 shown, which is also "Z"-shaped, but it is not arranged at intervals), although the anti-deformation ability of the "Z"-shaped vertical support member solution of this embodiment is slightly inferior to the above-mentioned existing solution, the long inclined rod designed in the above-mentioned existing solution will bring inconvenience to the passage of construction workers. Therefore, in order to better balance the convenience of construction, this embodiment adopts the scheme of arranging multiple "Z"-shaped vertical support members at intervals. Then, combined with the improved design of the framework and the horizontal support truss of this embodiment, the anti-deformation ability of the framework in the vertical direction can be well compensated.

[0038] In addition, in this embodiment, a protective frame 3 is further arranged on the outer facade of the framework; and a support plate 6 is further arranged on the first cross rod 4. Among them, the protective frame 3, as a protective component of the framework, covers the entire outer facade of the framework and is composed of aluminum plates and aluminum pipes through an anchoring method, and a plurality of holes are evenly distributed on the surface of the aluminum plates to reduce the influence of wind load at high altitude, as Figure 7 shown; and the support plate 6 is used to provide a working surface for workers during building construction. In this embodiment, the support plate 6 is made of aluminum alloy, and reinforcing ribs are arranged at the bottom of the support plate 6 (the arrangement form of the reinforcing ribs is not limited, for example, it can adopt "X"-shaped, "Z"-shaped, "day"-shaped, etc.) to enhance the bending resistance of the support plate. In this way, the support plate provided by this embodiment can not only avoid the problems of easy corrosion and heavy self-weight existing in the traditional steel support plate, but also avoid the defect of insufficient bending resistance of the aluminum alloy support plate.

[0039] In summary, each part of the present utility model is closely linked and complements each other. On the premise of ensuring the overall strength and stiffness of the attached lifting scaffold, the present utility model also takes into account the lightweight and construction convenience of the whole scaffold, and well balances technology and economy.

[0040] According to the above embodiment, the present utility model can be preferably realized.

Claims

1. An attached lifting scaffold, comprising a frame and a horizontal support truss arranged at the bottom of the frame, characterized in that: The frame is formed by splicing a plurality of first outer vertical rods (1), a first inner vertical rod (2) and a first cross bar (4); the horizontal support truss is formed by splicing a plurality of second outer vertical rods (8), a second inner vertical rod (9), a second cross bar (10) and a longitudinal rod (11), and two mutually intersecting oblique rods (12) are also arranged in the frames respectively formed by the second outer vertical rods (8) and the second cross bar (10), and the second inner vertical rods (9) and the second cross bar (10); the first outer vertical rods (1), the first inner vertical rods (2), the second outer vertical rods (8) and the second inner vertical rods (9) are all made of aluminum alloy, and the first cross bar (4), the second cross bar (10), the longitudinal rod (11) and the oblique rods (12) are all made of steel.

2. The attached lifting scaffold according to claim 1, characterized in that: A plurality of "Z"-shaped vertical support members (5) are sequentially arranged at intervals from top to bottom on both sides of the frame, and all the "Z"-shaped vertical support members are simultaneously connected to the first outer vertical rod (1) and the first inner vertical rod (2).

3. The attached lifting scaffold according to claim 2, characterized in that: A protective frame (3) is provided on the outer facade of the frame.

4. The attached lifting scaffold according to claim 3, characterized in that: A support plate (6) is also provided on the first crossbar (4).

5. The attached lifting scaffold according to claim 4, characterized in that: The support plate (6) is made of aluminum alloy, and a reinforcing rib is provided at the bottom of the support plate (6).

6. The attached lifting scaffold according to any one of claims 3 to 5, characterized in that: Guide rails (7) for installing the anti-falling device are also provided on both sides of the inner facade of the frame.

7. The attached lifting scaffold according to claim 6, characterized in that: The guide rail (7) is made of steel.

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