Composite cantilevered scaffold

Abstract

The application relates to a composite cantilevered scaffold, which comprises a cantilevered main beam, an upper pull rod and a lower support rod; the upper pull rod comprises a cable-stayed rod connected between a structural main body and the cantilevered main beam; the lower support rod comprises a diagonal support beam, a diagonal support connecting beam and a diagonal support inner beam, the diagonal support beam is connected between the structural main body and the cantilevered main beam, the diagonal support connecting beam is connected between the diagonal support beams, and the diagonal support inner beam is connected between the cantilevered main beam and the diagonal support beam. The scaffold can enhance the support strength of the scaffold and avoid the instability risk of the lower support rod in and out of the plane.

Description

Technical Field

[0001] This application relates to the field of scaffolding technology, and more specifically, to a composite cantilever scaffolding. Background Technology

[0002] Traditional cantilever scaffolding requires fixing I-beams to the floor slab and leaving construction holes in the exterior wall, which is a common quality problem in exterior wall construction.

[0003] Meanwhile, existing cantilever scaffolding does not fully consider the out-of-plane instability of the lower support members. When the cantilever height is too high, or when it is near the sea and subjected to large horizontal wind loads, there are risks of in-plane and out-of-plane instability of the lower support members. Utility Model Content

[0004] The purpose of this application is to provide a composite cantilever scaffold that can enhance the support strength of the scaffold while avoiding the risk of instability of the lower support members both in-plane and out-of-plane.

[0005] To achieve the above objectives, this utility model provides a composite cantilever scaffold, comprising: a cantilever main beam, an upper tie rod, and a lower support rod;

[0006] The upper tie rod includes a diagonal tie rod connecting the main structure and the cantilevered main beam;

[0007] The lower support member includes a diagonal brace beam, a diagonal brace connecting beam, and a diagonal brace inner beam. The diagonal brace beam connects the main structure and the cantilever main beam. The diagonal brace connecting beam connects the diagonal brace beams. The diagonal brace inner beam connects the cantilever main beam and the diagonal brace beam.

[0008] In an optional embodiment, the root of the cantilever main beam is connected to the structural beam of the main structure, the structural beam has a pre-embedded bolt sleeve, the root side of the cantilever main beam is welded to a pad, and the pad is fixed to the structural beam by connecting bolts passing through the bolt sleeve.

[0009] In an optional embodiment, the top surface of the cantilever main beam is provided with an ear plate, and the bottom end of the diagonal tie rod is connected to the ear plate by bolts;

[0010] The top end of the diagonal tie rod is connected to the lug plate by connecting bolts, and the lug plate is fixed to the structural beam by connecting bolts passing through the bolt sleeve;

[0011] The installation position of the lifting lug plate on the main structure is higher than that of the pad plate on the main structure. The diagonal tie rod is inclined relative to the extension direction of the cantilever main beam to avoid the support uprights of the scaffold.

[0012] In an optional embodiment, the diagonal tie rod corresponds one-to-one with the cantilever main beam, the ear plate is disposed on the other side of the opposite root end of the cantilever main beam and is disposed near the cantilever end, and the diagonal tie rod is disposed on the outer side of the two wings of the adjacent cantilever main beam.

[0013] In an optional embodiment, each cantilever main beam is connected to two diagonal tie rods, and the ear plate includes a first ear plate disposed in the middle of the cantilever main beam and a second ear plate disposed near the end of the cantilever.

[0014] In an optional embodiment, the tie rod includes a first tie rod and a second tie rod, the first tie rod and the second tie rod being connected to the first ear plate and the second ear plate respectively, and the first tie rod being arranged to avoid the inclined extension direction of the support column and the second tie rod being arranged to avoid the inclined extension direction of the support column.

[0015] In an optional embodiment, each of the inclined tie rods includes two separate rod sections and an adjusting sleeve disposed in the middle of the inclined tie rod. The opposing ends of the two rod sections are inserted into the adjusting sleeve and are respectively provided with a left-hand thread and a right-hand thread. The adjusting sleeve is provided with an adjusting thread that simultaneously engages with the left-hand thread and the right-hand thread.

[0016] In an optional embodiment, the root end of the diagonal brace is welded to the diagonal brace plate, and the top end of the diagonal brace is welded to the cantilever main beam.

[0017] The diagonal bracing plate is fixed to the structural beam by connecting bolts passing through the bolt sleeve, and the pad is installed at a higher position than the diagonal bracing plate in the main structure.

[0018] In an optional embodiment, the top end of the inner beam of the diagonal brace is welded to the cantilever main beam, the bottom end of the inner beam of the diagonal brace is welded to the diagonal brace beam, and both ends of the diagonal brace connecting beam are welded to the diagonal brace beam respectively.

[0019] In an optional embodiment, the bolt sleeve is fixed in the structural beam of the main structure by concrete pouring.

[0020] The composite cantilever scaffolding of this invention can reduce damage to the main structure while ensuring the structural stability of the lower support members and avoiding the risk of instability in and out of the plane.

[0021] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall side view of the composite cantilever scaffolding in this application;

[0024] Figure 2 This is a structural schematic diagram of the cantilever main beam and lower support members in this application;

[0025] Figure 3 A structural schematic diagram of the connection node at the root side of the main beam;

[0026] Figure 4 This is a structural schematic diagram of the connection node at the top of the tie rod;

[0027] Figure 5 This is a structural schematic diagram of the connection node at the root of the diagonal brace beam.

[0028] Figure 6 A top view of the structure with a diagonal tie rod connected to each cantilevered main beam;

[0029] Figure 7 A top view of the structure connecting two diagonal tie rods to each cantilevered main beam;

[0030] Figure 8 This is a structural diagram of the middle section of the tie rod.

[0031] icon:

[0032] 1-Cantilever main beam; 11-Ear plate; 11a-First ear plate; 11b-Second ear plate;

[0033] 2-Upper tie rod; 21-Diagonal tie rod; 21a-First diagonal tie rod; 21b-Second diagonal tie rod; 22-Adjusting sleeve;

[0034] 3-Lower support member; 31-Diagonal brace beam; 32-Diagonal brace connecting beam; 33-Inner beam of diagonal brace;

[0035] 4-Structural beam; 41-Bolt sleeve; 42-Connecting bolt; 43-Washer plate; 44-Lifting lug plate; 45-Diagonal brace plate;

[0036] 5-Supporting uprights. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0038] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0039] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0040] The composite cantilever scaffolding described in this application is primarily used as a support structure for scaffolding. By incorporating necessary structural elements, the structural strength of the lower support of the main beam is enhanced, while simultaneously reducing the risk of instability both inside and outside the plane at the lower support location.

[0041] See Figure 1 and combined Figures 2-8 The composite cantilever scaffolding of this utility model specifically includes: a cantilever main beam 1, upper tie rods 2, and lower support rods 3. The cantilever main beam 1 constitutes the supporting structure of the main body of the scaffolding. The upper tie rods 2 and lower support rods 3 are mainly used for diagonal tension and bottom support on the upper and lower sides of the cantilever main beam 1 to ensure the stability of the cantilever main beam structure.

[0042] From the perspective of diagonal reinforcement, the upper tie rod 2 includes a diagonal tie rod 21 connecting the main structure and the cantilever main beam 1.

[0043] From the perspective of bottom support reinforcement, the lower support member 3 includes a diagonal bracing beam 31, a diagonal bracing connecting beam 32, and a diagonal bracing inner beam 33. The diagonal bracing beam 31 connects the main structure and the cantilever main beam 1, maintaining the outward tilting support of the cantilever main beam 1, so that the cantilever main beam 1, the diagonal bracing beam 31, and the main structure form a triangular frame shape, which meets the bottom support requirements.

[0044] The diagonal bracing beam 32 is mainly used to connect the diagonal bracing beam 31, so that the diagonal bracing beams 31 on both sides are assembled into a whole structure. The diagonal bracing inner beam 33 is mainly used to further reinforce the internal space of the triangular frame formed by the cantilever main beam 1 and the diagonal bracing beam 31.

[0045] From the perspective of preventing instability on both sides of the support plane of the diagonal bracing beam 31, the diagonal bracing connecting beam 32 is connected between the diagonal bracing beams 31, and the diagonal bracing inner beam 33 is connected between the cantilever main beam 1 and the diagonal bracing beam 31. This can distribute the pressure of the cantilever main beam 1 borne by the lower support member 3 to the greatest extent, and at the same time avoid the internal and external instability factors of the diagonal bracing beams 31 located on both sides.

[0046] In this utility model, the root of the cantilever main beam 1 is connected to the structural beam 4 of the main structure. A high-strength bolt sleeve 41 is pre-embedded on the structural beam 4. The root side of the cantilever main beam 1 is welded to the pad 43. The pad 43 is fixed to the structural beam 4 by a high-strength connecting bolt 42 that passes through the bolt sleeve 41.

[0047] Because conventional cantilever scaffolding requires fixing the I-beam main beam to the floor slab and reserving construction holes in the exterior wall, this is a common quality problem in exterior wall construction, seriously affecting the strength of the main structure. In this invention, the root of the main beam is connected to the structural beam 4 of the main structure, and high-strength bolt sleeves 41 are pre-embedded in the structural beam 4. Combined with the pad 43 connected to the root of the cantilever main beam 1, which is fixed to the structural beam 4 by high-strength connecting bolts 42 passing through the high-strength bolt sleeves 41, the high-strength bolt sleeves 41 and the structural beam 4 of the main structure can be poured with concrete together. Once the concrete strength reaches 75%~80%, the connection and installation of the I-beam of the cantilever main beam 1 can be carried out. Furthermore, the use of scaffolding does not affect the structural construction of the exterior wall.

[0048] Once the scaffolding has been dismantled, unscrew the high-strength connecting bolts 42 and the washers 43, and fill the high-strength bolt sleeves 41 with a higher grade of concrete and an expansion agent. This will meet the strength requirements of the main structure and greatly improve the construction quality of the main structure compared to the existing traditional form of pre-reserved construction holes.

[0049] The top surface of the cantilever main beam 1 is provided with a lug plate 11, and the bottom end of the diagonal tie rod 21 is bolted to the lug plate 11; the top end of the diagonal tie rod 21 is connected to the hanging lug plate 44 by connecting bolts 42, which is the same as the connection form of the root side end of the cantilever main beam 1. The hanging lug plate 44 is fixed to the structural beam 4 of the main structure by connecting bolts 42 passing through the bolt sleeve 41; in order to ensure that the diagonal tie rod 21 is in a relatively inclined upward pulling state on the cantilever main beam 1, the installation position of the hanging lug plate 44 in the main structure is higher than the installation position of the pad plate 43 in the main structure, so that the diagonal tie rod 21 is inclinedly connected between the hanging lug plate 44 and the cantilever main beam 1.

[0050] Based on the support of the scaffold and the vertical arrangement of the scaffold support uprights 5 above the cantilever main beam 1, the diagonal tie rod 21 in this application is inclined relative to the extension direction of the cantilever main beam 1, so as to avoid the support uprights 5 of the scaffold and at the same time ensure the normal diagonal tension of the cantilever main beam 1.

[0051] In different application scenarios, depending on the length of the cantilever main beam 1 can be cantilevered relative to the main structure, different types of diagonal tie rods 21 can be connected for cantilever main beams 1 of different lengths.

[0052] In the shorter cantilever main beam 1 application, the diagonal tie rod 21 corresponds one-to-one with the cantilever main beam 1, and the ear plate 11 is set on the other side of the opposite root side of the cantilever main beam 1 and is set close to the cantilever end, so that the inclined tension of the diagonal tie rod 21 can be fully applied to most of the extension of the cantilever main beam 1.

[0053] Meanwhile, to avoid the support uprights 5 of the scaffolding, the diagonal braces 21 are installed on the outer sides of the two wings of the adjacent cantilever main beams 1. Compared to installing them on the inner side of the adjacent cantilever main beams 1, this greatly ensures the reinforcement effect of the cantilever main beams 1.

[0054] In the application of the longer cantilever main beam 1, each cantilever main beam 1 is connected with two diagonal tie rods 21. The ear plate 11 includes a first ear plate 11a set in the middle of the cantilever main beam 1 and a second ear plate 11b set near the end of the cantilever.

[0055] Correspondingly, the diagonal brace 21 includes a first diagonal brace 21a and a second diagonal brace 21b. The first diagonal brace 21a and the second diagonal brace 21b are respectively connected to the first ear plate 11a and the second ear plate 11b. The first diagonal brace 21a is set to avoid the inclined extension direction of the support column 5, and the second diagonal brace 21b is set to avoid the inclined extension direction of the support column 5. Referring to the attached drawings, that is to say, the first diagonal brace 21a and the second diagonal brace 21b on each cantilever main beam 1 are respectively connected to the left and right sides of the cantilever main beam 1, which can maintain the basic connection between the diagonal brace 21 and the ear plate 11. At the same time, this arrangement can offset the horizontal component force generated by the two diagonal braces 21, and maintain stability and reliability in the horizontal direction.

[0056] The diagonal tie rod 21 in this utility model can adjust the tensile force by adjusting its length. Each diagonal tie rod 21 includes two separate rod sections and an adjusting sleeve 22 located in the middle of the diagonal tie rod 21. The opposing ends of the two rod sections are inserted into the adjusting sleeve 22 and are respectively provided with a left-hand thread and a right-hand thread. The adjusting sleeve 22 is provided with an adjusting thread that simultaneously engages with the left-hand thread and the right-hand thread.

[0057] Specifically, the diagonal tie rod 21 in this utility model is in the form of a high-strength turnbuckle. By rotating the adjusting sleeve 22, the two rod sections can be brought closer together or moved away from each other, thereby adjusting the diagonal tension of the diagonal tie rod 21.

[0058] From the perspective of the structural connection of the diagonal bracing beam 31, the root end of the diagonal bracing beam 31 is welded to the diagonal bracing plate 45, and the top end of the diagonal bracing beam 31 is welded to the cantilever main beam 1.

[0059] Similar to the connection method at the root side of the cantilever main beam 1, the diagonal brace 45 is fixed to the structural beam 4 by the connecting bolt 42 passing through the bolt sleeve 41. The installation position of the pad 43 in the main structure is higher than that of the diagonal brace 45 in the main structure, so that the diagonal brace beam 31 is inclinedly connected between the diagonal brace 45 and the cantilever main beam 1.

[0060] Furthermore, the top end of the inner beam 33 of the diagonal brace is welded to the cantilever main beam 1, the bottom end of the inner beam 33 of the diagonal brace is welded to the diagonal brace beam 31, and the two ends of the diagonal brace connecting beam 32 are welded to the diagonal brace beam 31 respectively, thereby forming a rigid connection structure of the lower support member 3.

[0061] In terms of specific implementation, the cantilever main beam 1 adopts 16# I-beams, and the high-strength bolt sleeves 41 are pre-embedded in the structural beam 4 at the root side of the I-beams. M20 high-strength bolts and pads 43 are used to connect it to the structural beam 4 of the main structure.

[0062] Ear plates 11 are installed on the upper side of the front end of the I-beam. When the length of the cantilever main beam 1 is too long, double diagonal tie rods 21 are used. The specific length also depends on the weight of the overlying scaffold and the load during construction. The diagonal tie rods 21 are steel tie rod structures. When the steel tie rods are connected to the main structure and the cantilever main beam 1, they should avoid the inner support uprights 5 of the scaffold. The steel tie rods of adjacent support uprights 5 should be positioned in opposite directions to counteract the horizontal component force generated by the steel tie rods.

[0063] The diagonal tie rod 21 uses high-strength turnbuckles, which are extended and retracted using a screw rod to adjust the tightness of the diagonal tie rod 21. The upper end of the diagonal tie rod 21 is connected to the structural beam 4, and the anchor bolts are also M20 high-strength bolts with double nuts. The lower end is connected to the main beam through ear plates 11 and bolts.

[0064] The diagonal bracing beam 31 uses 14b channel steel for bottom support. The lower end of the bottom support channel steel is connected to the main structure by diagonal bracing plates and high-strength bolts, and the upper end is welded to the cantilever main beam 1.

[0065] The diagonal bracing beam 32 is connected to the two diagonal bracing beams 31 by 14b channel steel, and 14b channel steel is set as the inner diagonal bracing beam 33 of the lower support member 3, and they are welded respectively.

[0066] In this utility model, a single cantilever support structure is formed on the upper part of the cantilever main beam 1. At the junction of the two cantilevers, the new cantilever main beam 1 cannot be pre-embedded and installed because the main structure has not been constructed. At this time, a temporary floor height can be added to the existing lower scaffolding to meet the construction requirements of the main structure.

[0067] When the upper main structure has not been constructed, resulting in a lack of working surfaces for installing the diagonal bracing 21, the lower support member 3 can be constructed first to ensure the erection of scaffolding on the cantilevered main beam 1, thereby meeting the construction requirements of the upper structure. The installation of diagonal bracing connecting beams 32 and inner diagonal bracing beams 33 on the lower support member 3 ensures that it will not experience in-plane or out-of-plane instability when bearing upper loads or when the cantilever height is too high, or when the project is near the sea and subject to significant horizontal wind loads.

[0068] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0069] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A composite cantilever scaffold, characterized in that, include: Cantilever main beam, upper tie rods, and lower support rods; The upper tie rod includes a diagonal tie rod connecting the main structure and the cantilevered main beam; The lower support member includes a diagonal brace beam, a diagonal brace connecting beam, and a diagonal brace inner beam. The diagonal brace beam connects the main structure and the cantilever main beam. The diagonal brace connecting beam connects the diagonal brace beams. The diagonal brace inner beam connects the cantilever main beam and the diagonal brace beam. The root of the cantilever main beam is connected to the structural beam of the main structure. Bolt sleeves are pre-embedded on the structural beam. The root side of the cantilever main beam is welded to a pad. The pad is fixed to the structural beam by connecting bolts passing through the bolt sleeves. The top surface of the cantilever main beam is provided with a lug plate, and the bottom end of the diagonal tie rod is connected to the lug plate by bolts; The top end of the diagonal tie rod is connected to the lug plate by connecting bolts, and the lug plate is fixed to the structural beam by connecting bolts passing through the bolt sleeve; Each of the aforementioned diagonal tie rods includes two separate rod sections and an adjusting sleeve located in the middle of the diagonal tie rod. The opposing ends of the two rod sections are inserted into the adjusting sleeve and are respectively provided with a left-hand thread and a right-hand thread. The adjusting sleeve is provided with an adjusting thread that simultaneously engages with the left-hand thread and the right-hand thread. The top end of the inner beam of the diagonal brace is welded to the cantilever main beam, the bottom end of the inner beam of the diagonal brace is welded to the diagonal brace beam, and both ends of the diagonal brace connecting beam are welded to the diagonal brace beam respectively.

2. The composite cantilever scaffolding according to claim 1, characterized in that, The installation position of the lifting lug plate on the main structure is higher than that of the pad plate on the main structure. The diagonal tie rod is inclined relative to the extension direction of the cantilever main beam to avoid the support uprights of the scaffold.

3. The composite cantilever scaffolding according to claim 2, characterized in that, The diagonal tie rods correspond one-to-one with the cantilever main beams. The ear plates are located on the other side of the opposite root end of the cantilever main beams and are located near the cantilever end. The diagonal tie rods are located on the outer sides of the two wings of the adjacent cantilever main beams.

4. The composite cantilever scaffolding according to claim 2, characterized in that, Each of the cantilevered main beams is connected to two diagonal tie rods. The ear plate includes a first ear plate located in the middle of the cantilevered main beam and a second ear plate located near the end of the cantilever.

5. The composite cantilever scaffolding according to claim 4, characterized in that, The tie rod includes a first tie rod and a second tie rod, which are respectively connected to the first ear plate and the second ear plate. The first tie rod is arranged to avoid the inclined extension direction of the support column, and the second tie rod is arranged to avoid the inclined extension direction of the support column.

6. The composite cantilever scaffolding according to claim 1, characterized in that, The root end of the diagonal brace is welded to the diagonal brace plate, and the top end of the diagonal brace is welded to the cantilever main beam. The diagonal bracing plate is fixed to the structural beam by connecting bolts passing through the bolt sleeve, and the pad plate is installed at a higher position than the diagonal bracing plate in the main structure.

7. The composite cantilever scaffolding according to claim 1, characterized in that, The bolt sleeve is fixed in the structural beam of the main structure by concrete pouring.

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