A cantilevered scaffold and a method of erecting the scaffold

Abstract

The present application relates to a kind of cantilevered scaffold and the erecting method of the scaffold, cantilevered scaffold includes the lifting frame of being set in the outer wall of building, cantilevered scaffold also includes multiple and lifting frame hinged connection's overhanging support, the lower end of each overhanging support is set in the lower side of corresponding frame beam for with the side surface contact cooperation of building corresponding overhanging support force transmission surface, cantilevered scaffold also includes the scaffold of being fixed on each overhanging support, cantilevered scaffold also includes the first lifting mechanism for being detachably installed on the top of existing building, first lifting mechanism is connected with lifting frame by first lifting steel wire rope, cantilevered scaffold also includes the second lifting mechanism for being detachably installed on the top of building, second lifting mechanism is connected with the second lifting steel wire rope for being connected with lifting frame.The present application solves the technical problem that cantilever beam component in prior art penetrates wall and causes building floor to easily cause water seepage and to be filled wall hole.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a cantilevered scaffold and a method for assembling and using the scaffold. Background Technology

[0002] The construction process of a modern building involves a step-by-step approach, starting from the bottom up. During construction, scaffolding needs to be erected around the building, and dust nets are installed on the scaffolding. The scaffolding serves to facilitate the construction of the exterior walls and to make it easier to install the dust nets.

[0003] As the building height increases, it is necessary to dismantle the scaffolding at the lower levels and move the overall height of the scaffolding upwards, thus carrying out the construction step by step.

[0004] Existing scaffolding is typically cantilevered, as illustrated in Chinese Patent CN113668831A, which discloses "A Movable Cantilevered Scaffolding." This movable cantilevered scaffolding includes cantilever beams fixedly installed on a wall. There are multiple cantilever beams, which are arranged sequentially at intervals along the width or length of the wall. One end of each cantilever beam passes through the wall to form a cantilever end, and the scaffolding is fixed to the cantilever end. The scaffolding includes vertical, horizontal, and longitudinal steel pipes arranged in a cross pattern. The bottom of the vertical steel pipe is welded and fixed to the cantilever end of the corresponding cantilever beam. The horizontal steel pipe is connected to the vertical steel pipe by fasteners, and the longitudinal steel pipe is connected to the vertical steel pipe by fasteners.

[0005] After a building is completed to a certain height, the scaffolding and cantilever beam components need to be dismantled, and cantilever beam components and scaffolding need to be set up at a higher position. The existing cantilever scaffolding has the following problems: the cantilever beam components need to pass through the wall, which can easily damage the concrete beams and slabs, and can easily cause water seepage and leakage on the floor. After the cantilever beam components are dismantled, it is also necessary to fill the wall holes and perform other procedures, which is very cumbersome. Summary of the Invention

[0006] The purpose of this invention is to provide a cantilever beam scaffolding to solve the technical problems in the prior art where cantilever beam components penetrating walls easily cause floor seepage and require wall repair. The purpose of this invention is also to provide a method for assembling and using this cantilever beam scaffolding.

[0007] To solve the above-mentioned technical problems, the technical solution of the cantilevered scaffolding in this invention is as follows:

[0008] A cantilevered scaffold includes a lifting frame fitted around the perimeter of a building. The lifting frame includes longitudinal frame beams extending along the length of the building and transverse frame beams extending along the width of the building. The cantilevered scaffold also includes multiple first cantilever supports spaced apart along the transverse frame beams and multiple second cantilever supports spaced apart along the longitudinal frame beams. The first and second cantilever supports are located on the outer side of the building. The upper end of each cantilever support is hinged to the corresponding frame beam. The lower end of each cantilever support is provided with a force-transmitting surface located on the lower side of the corresponding frame beam for contacting and engaging with the corresponding side of the building. The cantilevered scaffold also includes scaffolding fixed to each cantilever support. The cantilevered scaffold also includes a first lifting mechanism for detachable installation on the top of an existing building. The first lifting mechanism is connected to the lifting frame via a first lifting wire rope. The cantilevered scaffold also includes a second lifting mechanism for detachable installation on the top of a subsequently constructed building. The second lifting mechanism is connected to a second lifting wire rope for connection with the lifting frame.

[0009] Furthermore, each cantilever support includes a support body that is hinged to the corresponding frame beam. A support adjustment plate is provided at the upper end of the support body. The left end of the support adjustment plate is hinged to the support body. A leveling bolt is threaded to the right end of the cantilever support. The upper end of the leveling bolt is pushed against the lower side of the right end of the support adjustment plate. The bottom of the scaffold is fixed to the support adjustment plate.

[0010] Furthermore, both the longitudinal and transverse frame beams are composed of at least two frame beam sections, with adjacent frame beam sections connected by bolts.

[0011] Furthermore, both the first and second lifting mechanisms include multiple lifting winches, with each frame beam corresponding to at least two lifting winches of the first lifting mechanism and each frame beam corresponding to at least two lifting winches of the second lifting mechanism.

[0012] Furthermore, each cantilever support has a left-side pull ring at its left end and a right-side pull ring at its right end. The frame beam has frame beam pull rings that correspond to each left-side pull ring. The height of the frame beam pull rings is higher than the height of the right-side pull rings and lower than the height of the left-side pull rings. The cantilever scaffold also includes pull ring wire ropes that connect the frame beam pull rings, left-side pull rings, and right-side pull rings when the second lifting mechanism is in operation.

[0013] Furthermore, a lifting ring is mounted on the frame beam along the vertical direction for connecting with the first or second lifting wire rope. A force transmission lever is hinged on the frame beam. The left end of the force transmission lever is hinged to the lower end of the lifting ring, and the right end of the force transmission lever is engaged with the left side of the corresponding cantilever support through an elastic body. This is used to drive the cantilever end of the cantilever support to flip upward when the lifting ring is subjected to an upward force.

[0014] Furthermore, the inner side of the frame beam is equipped with frame rollers for rolling contact with the outer surface of the building.

[0015] The technical solution for the construction and use of cantilever scaffolding in this invention is as follows:

[0016] The method for erecting and using cantilevered scaffolding includes the following steps: First, assemble a lifting frame on the perimeter of the building and install a first lifting mechanism on the top of the existing building. The first lifting mechanism is connected to the lifting frame via a first lifting wire rope, and the lifting frame is lifted to a set height via the first lifting mechanism. Second, erect scaffolding on each cantilever support connected to the lifting frame. The weight of the scaffolding acts on the cantilever supports, and the force-transmitting surface of the lower end of the cantilever support abuts against the corresponding side of the building, thus fixing the cantilever support relative to the building. Third, construct a new building above the existing building and fix a second lifting mechanism on the top of the new building. The second lifting mechanism is connected to the lifting frame via a second lifting wire rope. Remove or partially remove the scaffolding on the upper side of the cantilever supports, raise the height of the lifting frame via the second lifting mechanism, and then erect new scaffolding on the cantilever supports.

[0017] Furthermore, in the third step, the scaffolding on the upper side of the cantilever support is completely dismantled. Before the lifting frame is raised by the second lifting mechanism, steel wire ropes are connected between the frame beam pull rings, the left pull ring, and the right pull ring. Under the action of the steel wire ropes, the force transmission surface of the cantilever support at the lower end of the cantilever support is separated from the corresponding side of the building.

[0018] Furthermore, in the third step, the scaffolding on the upper side of the cantilever support is partially dismantled, while the vertical, horizontal, and longitudinal steel pipes on the lowest side of the scaffolding are retained. Two adjacent cantilever supports are connected together through the retained part of the scaffolding. When the lifting frame is lifted by the second lifting mechanism, the lifting ring pushes the cantilever support through the force transmission lever, causing the force transmission surface of the cantilever support at the lower end of the cantilever support to separate from the corresponding side of the building.

[0019] The beneficial effects of this invention are as follows: In this invention, there is no need to install through-wall components. A lifting frame, capable of being raised and lowered by a corresponding lifting mechanism, is installed around the perimeter of the building. Each cantilever support uses the lifting frame as a carrier. During the scaffolding erection process on the cantilever supports, the weight of the scaffolding acts on the cantilever supports, causing them to have a rotational tendency around their own axis of rotation. The support force-transmitting surface at the lower end of each cantilever support abuts against the corresponding side of the building. This force increases with the weight of the scaffolding; that is, the heavier the scaffolding, the stronger the connection between the cantilever support and the side of the building. The more robust the structure, the more stable the scaffolding becomes, thus providing stable mechanical support for the entire scaffolding. When the scaffolding height needs to be changed as the building height increases, the second lifting mechanism is first connected to the lifting frame. Then, the scaffolding is completely or partially dismantled to reduce the force between the cantilever support force transmission surface and the side of the building. The lifting frame is then lifted to a new height by the second lifting mechanism, allowing the new scaffolding to be erected. The entire cantilever scaffolding does not require through-wall components, will not damage the wall structure, will not cause floor seepage, and will not present the technical problem of needing to repair wall holes later. Attached Figure Description

[0020] The above and other objects, features, and advantages of this disclosure will become readily apparent from the following detailed description of exemplary embodiments with reference to the accompanying drawings. In the drawings, several embodiments of this disclosure are illustrated by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding portions, wherein:

[0021] Figure 1 This is a usage diagram of Embodiment 1 of the cantilever scaffolding in this invention;

[0022] Figure 2 This is a schematic diagram of the connection between the building structure and the lifting frame in Example 1;

[0023] Figure 3 This is a schematic diagram of the connection between two adjacent frame beams in Example 1;

[0024] Figure 4 This is a schematic diagram of the state of the lifting frame when its height is increased in Example 1;

[0025] Figure 5 This is a schematic diagram of the cooperation between the lifting frame and the corresponding cantilever support in Embodiment 1;

[0026] Figure 6 This is a usage diagram of Embodiment 2 of the cantilever scaffolding in this invention;

[0027] Figure 7 This is a schematic diagram of the state of the lifting frame when its height is increased in Example 2;

[0028] Figure 8This is a schematic diagram of the cooperation between the building and the lifting mining machine from a top-down perspective in Example 2;

[0029] Figure 9 yes Figure 8 A schematic diagram showing the connection between the central lifting frame and the corresponding cantilever support;

[0030] 1. Existing building structure; 2. Lifting winch; 3. Reversing pulley; 4. First lifting wire rope; 5. Scaffolding; 6. Lifting frame; 7. Cantilever support force transmission surface; 8. Lifting ring; 9. Frame beam ring; 10. Left ring; 11. Right ring; 12. Leveling bolt; 13. Cantilever support; 14. Horizontal frame beam; 15. Longitudinal frame beam; 16. Frame beam; 17. Bolt; 18. First lifting mechanism; 19. Later building structure; 20. Second lifting mechanism; 21. Second lifting wire rope; 22. Ring wire rope; 23. Support body; 24. Support adjusting plate; 25. Vertical steel pipe; 26. Horizontal steel pipe; 27. Longitudinal steel pipe; 28. Elastic body; 29. ​​Frame roller; 30. Force transmission lever; 31. First cantilever support; 32. Second cantilever support. Detailed Implementation

[0031] To facilitate understanding of the present invention, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0032] It should be noted that, unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention.

[0033] An embodiment 1 of a cantilever scaffolding in this invention is as follows: Figures 1-5 As shown: This includes a lifting frame 6 that is appropriately installed around the building's perimeter during use. Since most building cross-sections are rectangular, the lifting frame is also rectangular overall. The lifting frame includes longitudinal frame beams 15 extending along the building's length and transverse frame beams 14 extending along the building's width. Both the longitudinal and transverse frame beams are composed of at least two frame beam sections 16, connected to adjacent sections 16 by bolts 17. Adjacent longitudinal and transverse frame beams are also connected together by bolts. In this embodiment, each longitudinal frame beam is composed of two frame beam sections, and each transverse frame beam is composed of two frame beam sections.

[0034] The frame beam is provided with cantilever supports 13. Specifically, the cantilever supports 13 include multiple first cantilever supports 31 spaced apart along the transverse frame beam and multiple second cantilever supports 32 spaced apart along the longitudinal frame beam. In this embodiment, multiple cantilever supports are connected to each section of the longitudinal and transverse frame beams.

[0035] The first and second cantilever supports are located on the outside of the corresponding frame beams, and therefore also on the outside of the building. In the actual construction process, the height of the building gradually increases over time. In this invention, the two adjacent buildings constructed over time are referred to as the existing building 1 and the later-built building 19, respectively. That is to say, the height of the later-built building 19 is higher than that of the existing building, and the later-built building is formed by increasing the height of the existing building.

[0036] The upper end of each cantilever support is hinged to the corresponding frame beam. The hinge axis of the cantilever support is set horizontally. For the first cantilever support, the hinge axis extends longitudinally; for the second cantilever support, the hinge axis extends laterally.

[0037] Each cantilever support includes a support body 23 hinged to the corresponding frame beam. A support adjustment plate 24 is mounted on the upper end of the support body 23. The left end of the support adjustment plate 24 (the end closest to the frame beam) is hinged to the support body 23. A leveling bolt 12 is threaded onto the right end of the cantilever support (the end furthest from the frame beam). The upper end of the leveling bolt 12 engages with the lower right side of the support adjustment plate. A vertical support arm is mounted on the left end of the support body. A right-pushing protrusion protrudes from the left end of the vertical support arm. The left side of the pushing protrusion forms a cantilever support force transmission surface 7 for contacting and engaging with the corresponding side of the building. Friction grooves are provided on the cantilever support force transmission surface 7. To reduce damage to the building side from the cantilever support force transmission surface, a steel plate for contacting and abutting against the cantilever support force transmission surface can be pre-embedded on the corresponding side of the building.

[0038] The cantilevered scaffold also includes scaffolding 5 fixed to the support adjustment plates of each cantilever support. This scaffolding is existing technology and includes intersecting vertical, horizontal, and longitudinal steel pipes. The vertical steel pipes are welded and fixed to the corresponding support adjustment plates 24. The entire scaffolding is a square frame structure surrounding the building. When it is necessary to dismantle the connection between the vertical steel pipes and the support adjustment plates 24, it can be done by gas welding.

[0039] The cantilever scaffold also includes a first lifting mechanism 18 for detachable installation on the top of an existing building. The first lifting mechanism is connected to the lifting frame 6 via a first lifting wire rope 4. The cantilever scaffold also includes a second lifting mechanism 20 for detachable installation on the top of a later-built building. The second lifting mechanism 20 is connected to a second lifting wire rope 21 for connection with the lifting frame.

[0040] Both the first and second lifting mechanisms include multiple lifting winches 2, each lifting winch 2 including a drum and a drum motor that drives the corresponding drum to rotate. Each frame beam corresponds to two lifting winches of the first lifting mechanism, and each frame beam corresponds to two lifting winches of the second lifting mechanism.

[0041] Each cantilever support has a left pull ring 10 at its left end and a right pull ring 11 at its right end. The frame beam has frame beam pull rings 9 that correspond to each left pull ring. The height of the frame beam pull rings is higher than the height of the right pull rings and lower than the height of the left pull rings. The cantilever scaffold also includes a pull ring wire rope 22 that connects the frame beam pull rings, left pull rings and right pull rings when the second lifting mechanism is working.

[0042] Lifting rings 8 are also fixedly installed on the frame beam for connecting with the first and second lifting wire ropes.

[0043] In use, first construct an existing building of a certain height. Then, fix each lifting winch of the first lifting mechanism and the corresponding reversing pulley to the top of the existing building. Assemble the lifting frame on the outer side of the bottom of the existing building. Each lifting winch is connected to the corresponding lifting ring on the lifting frame via a first lifting wire rope. A ring wire rope is threaded through the left ring, with one end connected to the frame beam ring and the other end connected to the right ring. This applies an upward force to the right end of the cantilever support through the ring wire rope, causing the cantilever support to... The cantilever support's force-transmitting surface is separated from the building's side to prevent it from affecting the upward movement of the lifting frame. Each lifting winch operates synchronously to raise the lifting frame to the corresponding height. Then, each pull ring wire rope is removed, and each cantilever support flips under its own weight, bringing its force-transmitting surface into contact with the building's side. Subsequently, the height of the right end of the support adjustment plate is adjusted by turning the leveling bolts, thereby leveling the support adjustment plate. Scaffolding can then be erected on the support adjustment plate. The scaffolding erection process is existing technology, and the bottom of the vertical steel pipes of the scaffolding can be welded to the corresponding support adjustment plate.

[0044] The upper part of the scaffolding is higher than the top of the existing building. After the scaffolding is erected, construction can begin on the existing foundation to form the new building. As the height of the new building increases, the height of the scaffolding needs to be raised. Specifically, a second lifting mechanism is fixed to the new building. The lifting winch of the second lifting mechanism is connected to the lifting ring via a second lifting wire rope. Then, the original scaffolding is completely dismantled. Figure 4As shown, a pull ring wire rope is threaded through the left pull ring. One end of the pull ring wire rope is connected to the frame beam pull ring, and the other end is connected to the right pull ring. In this way, an upward force is applied to the right end of the cantilever support through the pull ring wire rope, causing the force transmission surface of the cantilever support to detach from the side of the building. The connection between the first lifting wire rope and the lifting pull ring is disconnected, and the reversing pulley of the first lifting mechanism is removed. The height of the lifting frame is then raised through the second lifting mechanism. Once the lifting frame reaches the designated height, the above steps can be repeated to complete the scaffolding erection. If it is necessary to further increase the overall height of the scaffolding, the first lifting mechanism can be moved to the roof above the second lifting mechanism for reuse. This cycle can be repeated to complete the scaffolding erection work for the entire building.

[0045] An embodiment 2 of a cantilever scaffolding is as follows: Figures 6-9 As shown: Example 2 differs from Example 1 in that, in Example 1, when raising the height of the lifting frame, it is necessary to use a pull ring steel wire rope to rotate the corresponding suspension support to prevent the force transmission surface of the suspension support from contacting the side of the building and affecting the height increase of the lifting frame. However, this operation requires disassembling and reassembling the pull ring steel wire rope, which increases the workload to some extent.

[0046] To address this issue, in this embodiment, a lifting ring 8 is mounted on the frame beam in a vertically directional guide configuration for connection to either the first or second lifting wire rope. A force transmission lever 30 is hinged to the frame beam; its left end is hinged to the lower end of the lifting ring 8, and its right end engages with the left side of the corresponding cantilever support via an elastic body 28. This engagement drives the cantilever end of the cantilever support to rotate upwards when the lifting ring is subjected to an upward force. Frame rollers 29 are provided on the inner side of the frame beam for rolling contact with the outer surface of the building exterior.

[0047] The corresponding lifting winch is connected to the lifting ring via the first lifting wire rope. When the height of the lifting frame needs to be increased, and the scaffolding needs to be dismantled, the scaffolding is not completely dismantled; the bottom vertical steel pipe 25, horizontal steel pipe 26, and longitudinal steel pipe 27 of the scaffolding are retained. Figure 9 As shown, at this point, the remaining scaffolding connects all the cantilever supports into a whole. When the hoisting winch applies an upward force to the lifting ring via the lifting wire rope, the force transmission lever reverses the direction, causing the cantilever supports to experience a force that reduces the contact force between the force transmission surface of the cantilever support and the side of the building, or even completely separates the force transmission surface of the cantilever support from the side of the building, in order to facilitate the raising and lowering of the frame. When the lifting frame reaches the designated height, scaffolding continues to be erected. As the weight of the scaffolding increases, the cantilever supports compress the elastic body, and the force transmission surface of the cantilever support contacts the side of the wall, thus achieving stable support for the cantilever supports.

[0048] When using the lifting frame for the first time after assembly, connectors are needed to connect the cantilever supports into a whole. These connectors should be removed before the first scaffolding is erected. However, if the bottom vertical, horizontal, and longitudinal steel pipes are used directly to connect the cantilever supports into a whole during the first use, then these pipes do not need to be removed when erecting the scaffolding again.

[0049] Example 1 of a method for erecting and using a cantilevered scaffold: Figures 1-5 As shown: The cantilever scaffolding in Example 1 of the construction and use method is the same as that in Example 1 of the cantilever scaffolding.

[0050] The method includes the following steps: First, assemble a lifting frame around the building and install a first lifting mechanism on the top of the existing building. The first lifting mechanism is connected to the lifting frame via a first lifting wire rope, and the lifting frame is lifted to a set height via the first lifting mechanism. Second, erect scaffolding on each cantilever support connected to the lifting frame. The weight of the scaffolding acts on the cantilever supports, and the force-transmitting surface of the lower end of the cantilever support abuts against the corresponding side of the building, and the cantilever support is fixed relative to the building. Third, construct a new building above the existing building, fix a second lifting mechanism on the top of the new building, and connect the second lifting mechanism to the lifting frame via a second lifting wire rope. Remove or partially remove the scaffolding on the upper side of the cantilever supports, raise the height of the lifting frame via the second lifting mechanism, and then erect new scaffolding on the cantilever supports.

[0051] In the third step, the scaffolding on the upper side of the cantilever support is completely dismantled. Before the lifting frame is lifted by the second lifting mechanism, pull ring wire ropes are connected between the frame beam pull rings, the left pull ring, and the right pull ring. Under the action of the pull ring wire ropes, the force transmission surface of the cantilever support at the lower end of the cantilever support is separated from the corresponding side of the building.

[0052] Example 2 of a method for erecting and using a cantilevered scaffold: Figures 6-9 As shown: The cantilever scaffolding in Example 2 of the construction and use method is the same as that in Example 2 of the cantilever scaffolding.

[0053] The method includes the following steps: First, assemble a lifting frame around the building and install a first lifting mechanism on the top of the existing building. The first lifting mechanism is connected to the lifting frame via a first lifting wire rope, and the lifting frame is lifted to a set height via the first lifting mechanism. Second, erect scaffolding on each cantilever support connected to the lifting frame. The weight of the scaffolding acts on the cantilever supports, and the force-transmitting surface of the lower end of the cantilever support abuts against the corresponding side of the building, and the cantilever support is fixed relative to the building. Third, construct a new building above the existing building, fix a second lifting mechanism on the top of the new building, and connect the second lifting mechanism to the lifting frame via a second lifting wire rope. Remove or partially remove the scaffolding on the upper side of the cantilever supports, raise the height of the lifting frame via the second lifting mechanism, and then erect new scaffolding on the cantilever supports.

[0054] In the third step, the scaffolding on the upper side of the cantilever support is partially dismantled, while the vertical, horizontal and longitudinal steel pipes on the lowest side of the scaffolding are retained. Two adjacent cantilever supports are connected together through the retained part of the scaffolding. When the lifting frame is lifted by the second lifting mechanism, the lifting ring pushes the cantilever support through the force transmission lever, so that the force transmission surface of the cantilever support at the lower end of the cantilever support is separated from the corresponding side of the building.

[0055] In the foregoing description of this specification, unless otherwise expressly specified and limited, the terms "fixed," "installed," "connected," or "linked" should be interpreted broadly. For example, the term "linked" can refer to a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; or it can refer to the internal communication of two components or the interaction between two components. Therefore, unless otherwise expressly limited in this specification, those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0056] Based on the above description in this specification, those skilled in the art will also understand that terms used, such as "upper," "lower," "front," "rear," "left," "right," "length," "width," "thickness," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," "center," "longitudinal," "transverse," "clockwise," or "counterclockwise," are terms indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings of this specification. They are only for the purpose of facilitating the explanation of the present invention and simplifying the description, and do not imply that the devices or elements involved must have the specific orientation, or be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms should not be understood or interpreted as limitations on the present invention.

[0057] Furthermore, the terms "first" or "second," etc., used in this specification to refer to numbers or ordinal numbers are for descriptive purposes only and should not be construed as indicating, explicitly or implicitly, relative importance or specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this specification, "a plurality of" means at least two, such as two, three, or more, unless otherwise explicitly specified.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cantilevered scaffold, characterized in that: The cantilever scaffolding includes a lifting frame fitted around the building's perimeter. The lifting frame includes longitudinal frame beams extending along the building's length and transverse frame beams extending along the building's width. The cantilever scaffolding also includes multiple first cantilever supports spaced along the transverse frame beams and multiple second cantilever supports spaced along the longitudinal frame beams. The first and second cantilever supports are located on the outer side of the building. The upper end of each cantilever support is hinged to its corresponding frame beam. The lower end of each cantilever support has a force-transmitting surface located below the corresponding frame beam for contacting and engaging with the corresponding side of the building. The cantilever scaffolding also includes scaffolding fixed to each cantilever support. Furthermore, the cantilever scaffolding includes a first lifting mechanism for detachable installation on the existing building's top, connected to the lifting frame via a first lifting wire rope. Finally, the cantilever scaffolding includes a second lifting mechanism for detachable installation on the top of a later-built building, connected to a second lifting wire rope for connection to the lifting frame.

2. The cantilevered scaffolding according to claim 1, characterized in that: Each cantilever support includes a support body that is hinged to the corresponding frame beam. A support adjustment plate is provided at the upper end of the support body. The left end of the support adjustment plate is hinged to the support body. A leveling bolt is threaded to the right end of the cantilever support. The upper end of the leveling bolt is pushed against the lower side of the right end of the support adjustment plate. The bottom of the scaffold is fixed to the support adjustment plate.

3. The cantilevered scaffolding according to claim 1, characterized in that: Both longitudinal and transverse frame beams are composed of at least two frame beam sections, which are connected by bolts between adjacent frame beam sections.

4. The cantilevered scaffolding according to claim 3, characterized in that: Both the first and second lifting mechanisms include multiple lifting winches. Each frame beam section corresponds to at least two lifting winches of the first lifting mechanism, and each frame beam section corresponds to at least two lifting winches of the second lifting mechanism.

5. The cantilevered scaffolding according to claim 1, characterized in that: Each cantilever support has a left-side pull ring at its left end and a right-side pull ring at its right end. The frame beam has frame beam pull rings that correspond to each left-side pull ring. The height of the frame beam pull rings is higher than the height of the right-side pull rings and lower than the height of the left-side pull rings. The cantilever scaffold also includes pull ring wire ropes that connect the frame beam pull rings, left-side pull rings, and right-side pull rings when the second lifting mechanism is in operation.

6. The cantilevered scaffolding according to claim 1, characterized in that: The frame beam is equipped with a lifting ring that moves along the vertical direction to connect with the first or second lifting wire rope. A force transmission lever is hinged on the frame beam. The left end of the force transmission lever is hinged to the lower end of the lifting ring, and the right end of the force transmission lever is engaged with the left side of the corresponding cantilever support through an elastic body. This is used to drive the cantilever end of the cantilever support to flip upward when the lifting ring is subjected to an upward force.

7. The cantilevered scaffolding according to claim 6, characterized in that: The inner side of the frame beam is equipped with frame rollers for rolling contact with the outer surface of the building.

8. A method for erecting and using the cantilevered scaffolding as described in any one of claims 1 to 7, characterized in that: The method includes the following steps: First, assemble a lifting frame around the building and install a first lifting mechanism on the top of the existing building. The first lifting mechanism is connected to the lifting frame via a first lifting wire rope, and the lifting frame is lifted to a set height via the first lifting mechanism. Second, erect scaffolding on each cantilever support connected to the lifting frame. The weight of the scaffolding acts on the cantilever supports, and the force-transmitting surface of the lower end of the cantilever support abuts against the corresponding side of the building. The cantilever support is fixed relative to the building. Third, construct a new building above the existing building and fix a second lifting mechanism on the top of the new building. The second lifting mechanism is connected to the lifting frame via a second lifting wire rope. Remove or partially remove the scaffolding on the upper side of the cantilever supports, raise the height of the lifting frame via the second lifting mechanism, and then erect new scaffolding on the cantilever supports.

9. The method for setting up and using the device according to claim 8, characterized in that: In the third step, the scaffolding on the upper side of the cantilever support is completely dismantled. Before the lifting frame is lifted by the second lifting mechanism, pull ring wire ropes are connected between the frame beam pull rings, the left pull ring, and the right pull ring. Under the action of the pull ring wire ropes, the force transmission surface of the cantilever support at the lower end of the cantilever support is separated from the corresponding side of the building.

10. The method of setting up and using according to claim 8, characterized in that: In the third step, the scaffolding on the upper side of the cantilever support is partially dismantled, while the vertical, horizontal and longitudinal steel pipes on the lowest side of the scaffolding are retained. Two adjacent cantilever supports are connected together through the retained part of the scaffolding. When the lifting frame is lifted by the second lifting mechanism, the lifting ring pushes the cantilever support through the force transmission lever, so that the force transmission surface of the cantilever support at the lower end of the cantilever support is separated from the corresponding side of the building.

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