Cantilevered scaffold
The connection method between the protective arm and the scaffold body solves the problem of wall damage when increasing the height of cantilever scaffolding, realizing a reinforcement method that does not require drilling, thus improving construction safety and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THE 5TH ENG OF CHINA RAILWAY 22TH BUREAU GROUP
- Filing Date
- 2025-08-19
- Publication Date
- 2026-07-14
AI Technical Summary
Existing cantilever scaffolding requires drilling multiple holes in the wall when increasing its height, which leads to damage to the wall structure, increased construction costs and safety hazards, and affects construction efficiency.
The protective arm is connected to the scaffold body for reinforcement. It is fixed by extending the structure of the protective arm itself and the connectors, avoiding repeated drilling into the wall. The connection between the protective arm itself and the scaffold body is used to increase the height and fix it.
This avoids drilling into the walls, reducing wall repair costs and the possibility of structural damage, while improving construction safety and efficiency.
Smart Images

Figure CN224495740U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of construction equipment technology, specifically to a cantilevered scaffold. Background Technology
[0002] Cantilevered scaffolding is a commonly used high-altitude work platform in construction. It extends from the building wall through cantilever beams, and the main body of the scaffolding is erected on the cantilever beams to provide working space for construction workers.
[0003] When existing cantilever scaffolding needs to be extended for construction purposes, it is usually necessary to drill new holes in the wall at the corresponding height and install anchor bolts and other connectors to secure the new cantilever structure. This method results in numerous holes in the wall, compromising the wall's integrity and structural strength. The holes also require subsequent repairs, increasing construction costs and time. Furthermore, repeated drilling poses safety hazards and affects construction efficiency. Utility Model Content
[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a cantilever scaffold to solve the problem that the wall structure is damaged when the height of the cantilever scaffold is increased by continuously drilling holes in the wall.
[0005] According to an embodiment of this utility model, a cantilevered scaffold includes a U-shaped suspension, which is set on the outside of a wall for installing the scaffold body; a protective unit includes protective components symmetrically arranged on the U-shaped suspension and close to one end of the wall, each protective component including protective arms that are connected end to end, and a connecting piece is provided at the joint of each pair of protective arms. The connecting piece is connected to the wall for fixing the corresponding protective arm, and each protective arm is connected to the scaffold body through a corresponding connector for reinforcing the scaffold body.
[0006] Compared to existing technologies, this invention offers the following advantages: By reinforcing the scaffold structure with protective arms, the entire heightening process relies on the protective arm's structure and its connection to the scaffold structure. Within the height range of the protective arm, increasing the scaffold height only requires extending the connection between the protective arm and the scaffold structure using connectors. The entire heightening process depends solely on the protective arm, avoiding repeated drilling and fixing to the wall. This also prevents indirect damage to the wall surface and internal structure caused by wall vibration and debris falling during drilling operations. Furthermore, it eliminates the need for subsequent wall hole repairs, reducing wall repair costs and the possibility of secondary structural damage. Even if the scaffold height exceeds the height of the protective arm, this can be addressed by adding more protective arms. The number of holes required to add protective arms is far less than the number required to directly drill holes in the wall to connect the scaffold.
[0007] Preferably, the U-shaped suspension is provided with four sets of mounting sleeves, and the bottom of the scaffold body is inserted into the corresponding mounting sleeves.
[0008] Preferably, the side of the C-shaped suspension closest to the wall is provided with a limit sleeve, and one end of the corresponding guard arm is inserted into the corresponding limit sleeve.
[0009] Preferably, each limiting sleeve and each protective arm has a first through hole at both ends, wherein the first through hole at the end of the protective arm located inside the limiting sleeve overlaps with the axis of the first through hole on the limiting sleeve, and a bolt is inserted therethrough.
[0010] Preferably, the mating component includes a mounting base connected to the wall and a mating sleeve disposed on the mounting base, wherein two second through holes are symmetrically opened on the mating sleeve.
[0011] Preferably, the ends of the protective arms that are connected in pairs are located inside the corresponding connecting sleeves, and the axes of each second through hole overlap with the corresponding first through hole, and bolts are inserted through them.
[0012] Preferably, each connector includes two symmetrically arranged pull rings, each with a notch at one end and a bolt at the corresponding notch. The two pull rings are used to clamp the corresponding protective arm and scaffold body.
[0013] Preferably, each pull ring has an arc-shaped rubber pad on its inner arc surface.
[0014] Preferably, a support arm is mirror-mounted on the side of the bottom of the C-shaped suspension away from the wall, and the end of each support arm away from the C-shaped suspension is connected to the wall. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model.
[0016] Figure 2 This is an exploded structural diagram of an embodiment of the present invention.
[0017] Figure 3 for Figure 2 A magnified view of region A in the middle.
[0018] Figure 4 for Figure 2 A magnified view of region D in the middle.
[0019] Figure 5 for Figure 2 A magnified view of region C in the middle.
[0020] The reference numerals in the accompanying drawings include:
[0021] 10. Walls; 11. Scaffolding;
[0022] 20. C-shaped suspension; 21. Mounting sleeve; 22. Limiting sleeve; 24. Support arm;
[0023] 30. Protective arm; 31. First through hole;
[0024] 40. Mounting base; 41. Connecting sleeve; 410. Second through hole;
[0025] 50. Pull ring; 501. Notch; 51. Curved rubber pad. Detailed Implementation
[0026] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.
[0027] like Figures 1 to 5 As shown in the figure, this utility model embodiment proposes a cantilevered scaffold, which includes a U-shaped suspension 20, which is set on the outside of the wall 10 for installing the scaffold body 11; a protective unit, including protective components symmetrically arranged on the U-shaped suspension 20 and close to one end of the wall 10. Each protective component includes protective arms 30 that are connected end to end. A connecting piece is provided at the joint of each pair of protective arms 30. The connecting piece is connected to the wall 10 for fixing the corresponding protective arm 30. Each protective arm 30 is connected to the scaffold body 11 through a corresponding connector for reinforcing the scaffold body 11.
[0028] The detailed working process of this embodiment is as follows: the scaffold body 11 is reinforced by the protective arm 30. The entire heightening process relies on the structure of the protective arm 30 itself and its connection with the scaffold body 11. Within the height range of the protective arm 30, when increasing the height of the scaffold body 11, it is only necessary to extend the connection between the protective arm 30 and the scaffold body 11 through the connector for fixation. The entire heightening process relies only on the protective arm 30, avoiding repeated drilling and connection fixing of the wall 10. This avoids indirect damage to the surface and internal structure of the wall 10 caused by vibration of the wall 10 and falling debris during drilling operations. At the same time, it eliminates the need for subsequent repair of the holes in the wall 10, reducing the repair cost of the wall 10 and the possibility of secondary structural damage.
[0029] Even if the height of the scaffold body 11 exceeds the height of the guard arm 30, it can be solved by adding guard arms 30. The number of holes required to add guard arms 30 is far less than the number of holes to be drilled directly in the wall 10 to connect the scaffold.
[0030] like Figure 2 and Figure 3 As shown, four sets of mounting sleeves 21 are mirrored on the U-shaped suspension 20, and the bottom of the scaffold body 11 is inserted into the corresponding mounting sleeves 21.
[0031] The detailed working process of this embodiment is as follows: With the setting of four sets of mounting sleeves 21, a modular foundation is provided for the assembly and fixing of the scaffold body 11. During the initial installation, the bottom of the scaffold body 11 can be quickly inserted into the mounting sleeve 21 to complete the positioning. Then, the scaffold body 11 is assembled by fasteners. Unlike the traditional initial installation which generally uses welding, bolt connection or fastener connection, especially in high-altitude construction, the initial installation is more difficult. With the setting of four sets of mounting sleeves 21, the initial installation can be completed quickly and safely. After the scaffold body 11 is inserted into the corresponding mounting sleeve 21, the shaking and displacement of the scaffold body 11 can also be reduced, and the stability can be improved.
[0032] like Figure 2 and Figure 3 As shown, the side of the U-shaped suspension 20 closest to the wall 10 is provided with a limiting sleeve 22, and one end of the corresponding protective arm 30 is inserted into the corresponding limiting sleeve 22.
[0033] like Figure 3 As shown, each limiting sleeve 22 and each protective arm 30 has a first through hole 31 at both ends. The first through hole 31 at one end of the protective arm 30 located inside the limiting sleeve 22 overlaps with the axis of the first through hole 31 on the limiting sleeve 22 and is fitted with a bolt.
[0034] like Figure 4 As shown, the mating component includes a mounting base 40 connected to the wall 10 and a mating sleeve 41 disposed on the mounting base 40. Two second through holes 410 are symmetrically opened on the mating sleeve 41.
[0035] like Figure 4 As shown, the ends of the protective arms 30 that are connected in pairs are all located inside the corresponding connecting sleeves 41, and the axes of each second through hole 410 overlap with the axis of the corresponding first through hole 31, and bolts are inserted through them.
[0036] The detailed working process of this embodiment is as follows: the protective arm 30 is fixed by the docking sleeve 41 and the limiting sleeve 22. The limiting sleeve 22 and the docking sleeve 41 are inserted and fixed by bolts. After the other end of the protective arm 30 is inserted into the limiting sleeve 22, the axes of the first through holes 31 of the two overlap and bolts are inserted to complete the fixation. The two ends of the protective arm 30 form a rigid connection node, which can effectively limit the horizontal and vertical displacement of the protective arm 30, ensure the stability of the scaffold body 11 after connecting the protective arm 30, and at the same time, the force of the protective arm 30 can be stably transmitted to the U-shaped suspension 20 and the wall 10.
[0037] When it is necessary to add a protective arm 30, simply add a connecting piece at the corresponding height (at this time, holes need to be drilled in the wall 10 to fix the connecting piece), then insert both ends of the added protective arm 30 into the connecting sleeves 41 of the connecting piece, and then connect and fix it with bolts. This can minimize damage to the structure of the wall 10.
[0038] like Figure 5 As shown, each connector includes two symmetrically arranged pull rings 50. Each end of the two pull rings 50 has a notch 501, and a bolt is provided at the corresponding notch 501. The two pull rings 50 are used to clamp the corresponding protective arm 30 and the scaffold body 11.
[0039] The detailed working process of this embodiment is as follows: With the pull rings 50 in place, the scaffold body 11 can be firmly connected to the protective arm 30, thereby fixing the scaffold body 11. The symmetrical pull rings 50 can form a circumferential fixation between the protective arm 30 and the scaffold body 11. After the two pull rings 50 are tightened by the bolts at the notches 501, a uniform clamping force can be applied to the protective arm 30 and the scaffold body 11 to ensure that the two are tightly fitted to form a whole and to prevent the scaffold body 11 from shaking.
[0040] To improve the stability of the scaffold body 11, in addition to the pull ring 50, multiple scaffold pipes can be connected to the guard arm 30 via fasteners during the assembly of the scaffold body 11 (the fasteners used for assembling the scaffold are not shown in the attached drawings; the fasteners are important components required for assembling the scaffold and are common knowledge in the field).
[0041] like Figure 5 As shown, each pull ring 50 has an arc-shaped rubber pad 51 on its inner arc surface.
[0042] The detailed working process of this embodiment is as follows: With the arc-shaped rubber pad 51 in place, the arc-shaped rubber pad 51 can buffer the rigid contact between the pull ring 50 and the clamped part. This avoids the pull ring 50 directly clamping and may cause wear to the surface of the protective arm 30 or the scaffold body 11.
[0043] like Figure 1 As shown, a support arm 24 is mirror-imagely provided on the side of the bottom of the C-shaped suspension 20 away from the wall 10, and the end of each support arm 24 away from the C-shaped suspension 20 is connected to the wall 10.
[0044] The detailed working process of this embodiment is as follows: The support arm 24 forms an oblique support structure, which can effectively share the cantilever load of the U-shaped suspension 20. The support arm 24, the U-shaped suspension 20, and the wall 10 form a triangular stable structure, improving stability.
[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A cantilevered scaffold, characterized in that, The utility model relates to a wall body scaffold protection device, including: The type suspension (20) is arranged outside wall body (10) for installing scaffold body (11); The protection unit includes the protection assembly that is symmetrically arranged on the type suspension (20) and is close to one end of wall body (10), and each protection assembly includes the protection arm (30) that is opposite to the head, and the butt joint of two protection arms (30) is provided with butt joint spare, and the butt joint spare is connected with wall body (10), is used for fixing corresponding protection arm (30), and each protection arm (30) is connected with scaffold body (11) through corresponding connecting spare, is used for reinforcing scaffold body (11).
2. The cantilevered scaffold of claim 1, wherein: The type suspension (20) is mirror image and is provided with four sets of mounting sleeve (21), and the bottom of scaffold body (11) is respectively inserted in corresponding mounting sleeve (21).
3. The overhang type scaffold according to claim 1, characterized in that: The type suspension (20) is mirror image and is provided with four sets of mounting sleeve (21), and the bottom of scaffold body (11) is respectively inserted in corresponding mounting sleeve (21).
4. The cantilevered scaffold of claim 3, wherein: The first through-hole (31) of the protection arm (30) in the one end of the limiting sleeve (22) is overlapped with the first through-hole (31) on the limiting sleeve (22), and is provided with bolt.
5. The cantilevered scaffold of claim 4, wherein: The butt joint spare includes the mounting seat (40) that is connected with wall body (10) and the butt joint sleeve (41) that is provided on the mounting seat (40), and two second through-holes (410) are symmetrically set up on the butt joint sleeve (41).
6. The cantilevered scaffold of claim 5, wherein: The end of two butt-jointed protection arms (30) is located in corresponding butt joint sleeve (41), and each second through-hole (410) is overlapped with corresponding first through-hole (31) axis, and is provided with bolt.
7. The overhang type scaffold according to claim 5, characterized in that: Each connecting spare includes two symmetrically arranged pull rings (50), and each end of two pull rings (50) is provided with notch (501), and corresponding notch (501) is provided with bolt, and two pull rings (50) are used for clamping corresponding protection arm (30) and scaffold body (11).
8. The cantilevered scaffold of claim 7, wherein: The inner arc surface of each pull ring (50) is provided with arc-shaped rubber pad (51).
9. The overhang scaffold of claim 1, wherein: The type suspension (20) is mirror image and is provided with support arm (24) on the side away from wall body (10), and each support arm (24) is connected with wall body (10) on the end away from the type suspension (20).