Small cross rod, protection device and ring lock type external scaffold

Abstract

The utility model relates to the technical field of building construction equipment, and discloses a small cross rod, a protection device and a ring lock type external scaffold. The small cross rod comprises a small cross rod body with the length of 300 + / -50 mm, one end of the small cross rod body is provided with a buckling head used for being connected with a connecting disc on the disc buckle type external scaffold through a plug pin, and the other end of the small cross rod body is provided with a blocking piece. The length of the small cross rod body is limited to be 300 + / -50mm, so that when the small cross rod is applied to the technology of an external scaffold core filling device, the small cross rod can well meet most conditions that a conventional gap between a ring lock type external scaffold and a building structure is 350mm, and the tolerance range of + / -50mm also considers the change condition of an actual gap on site; material waste caused by the fact that the small cross rod body is too long is avoided; through fixation of the buckling heads and the plug pins, the core filling device disassembling and assembling operation of constructors is simplified, and the operation risk is also reduced due to the fact that the blocking piece is arranged at the other end of the small cross rod body.

Description

TECHNICAL FIELD

[0001] The utility model relates to building construction equipment technical field, concretely relates to a small cross bar, protection device and disc buckle type outer scaffold. BACKGROUND

[0002] When the disc buckle type outer scaffold is erected at the project construction site, the conventional gap between the disc buckle type outer scaffold and the building structure is usually 350mm due to the reasons of reserving the structure beam formwork and worker operation, and according to the specification requirement, when the gap is greater than 150mm, the gap needs to take safety protection measures.

[0003] The current protection measures commonly used in the site are that the filling core steel pipe of the cantilever is added to each span of the disc buckle type outer scaffold and extends into the gap, the filling core steel pipe adopts the fastener steel pipe, and the steel pipe and the outer frame stand are connected and fixed by the fastener.

[0004] However, the fastener type steel pipe and the disc buckle type outer scaffold stand are connected and fixed by the fastener, which is troublesome to install and disassemble, and the operation safety risk is great. The safety net is fully laid on the filling core steel pipe, on the one hand, the operation is complicated, and on the other hand, the safety protection effect of the safety net on the falling objects (especially heavy objects such as fasteners, hammers, screwdrivers and the like) is not good, and the safety net is easily corroded and damaged with time and worker operation, and after the damage, it needs to be re-laid, which wastes materials and has poor safety protection effect. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model provides a small cross bar, protection device and disc buckle type outer scaffold, which aims to solve the defects that the installation and disassembly process of the filling core device of the existing outer scaffold filling core device technology is complicated and the operation risk is large when the conventional gap between the outer scaffold and the building structure is used.

[0006] In the first aspect, the utility model provides a small cross bar, which comprises a small cross bar body, the length of the small cross bar body is 300±50mm, one end of the small cross bar body is provided with a fastener joint for connecting with the connecting disc on the disc buckle type outer scaffold through a bolt, and the other end of the small cross bar body is provided with a blocking piece.

[0007] By limiting the length of the small cross bar body to 300±50mm, the small cross bar can well meet the majority of cases of the conventional gap of 350mm between the disc buckle type outer scaffold and the building structure when applied to the outer scaffold core filling device technology, and the tolerance range of ±50mm also considers the actual gap changes on site, which not only avoids material waste caused by the too long small cross bar body, but also is beneficial to realize batch production of the small cross bar body, thereby improving the production efficiency; the connection mode of the buckle joint and the bolt cooperation is simple to operate, which is beneficial to improve the working efficiency of the construction personnel in erecting the scaffold, and the bolt can effectively prevent the small cross bar from loosening or falling off during use, thereby ensuring the close connection of the small cross bar and the main structure of the scaffold, and when the scaffold bears the construction load, the stable connection can uniformly transmit the load to the entire scaffold structure, thereby improving the carrying capacity and safety of the scaffold. In addition, the blocking piece at the other end of the small cross bar body plays an important protection role. During the use of the scaffold, the blocking piece can prevent tools, materials from accidentally falling off the end of the small cross bar when workers are working on the scaffold.

[0008] Optionally, the utility model provides a small cross bar, the blocking piece is the end plate which is connected perpendicularly on the extension end of the small cross bar body.

[0009] By taking the end plate connected perpendicularly on the extension end of the small cross bar as the blocking piece, the end plate as a relatively flat contact surface can effectively prevent tools, materials or personnel from accidentally falling off the end of the small cross bar when workers are working on the scaffold, and can also effectively prevent other components (such as foot plates) adjacent to the end plate from transverse displacement, thereby avoiding the falling of other components from the end of the small cross bar, and if the small cross bar needs to be connected with other auxiliary facilities (such as connecting safety guardrails), the vertical end plate can better fit other components, making the connection more closely and reliably.

[0010] Optionally, the utility model provides a small cross bar, the upper edge of the end plate protrudes the small cross bar body upwards, and the two side edges of the end plate protrude the small cross bar body to the two sides respectively.

[0011] The design of the end plate protruding three edges of the small cross bar body can better fix and guide some components used in cooperation with the small cross bar, for example, when installing some footboards or temporary support structures which need to be docked with the small cross bar, the protruding end plate can serve as a reference point for positioning and fixing, so that these components are easier to install and the installation position is more accurate, and meanwhile, the protruding end plate can also play a certain blocking role to better prevent the footboard and the like from being separated from the small cross bar body.

[0012] Optionally, the utility model provides a small cross bar, the distance that the upper edge of end plate protrudes small cross bar body is greater than the distance that both sides of end plate protrude small cross bar body respectively.

[0013] By limiting the distance that the upper edge of the end plate protrudes the small cross bar body is greater than the distance that both sides of the end plate protrude the small cross bar body, the footboard or the temporary support structure docked with the small cross bar and the like connecting components can be better fixed and installed on the small cross bar body, which helps to enhance the stability and firmness of the connecting components and prevent the connecting part from loosening or separating when stressed.

[0014] Optionally, the utility model provides a small cross bar, the bottom edge of end plate protrudes small cross bar body.

[0015] By protruding the bottom edge of the end plate downward from the small cross bar body, the deformation resistance of the end plate can be enhanced, so that the end plate forms a more stable structure in three-dimensional space.

[0016] Optionally, the utility model provides a small cross bar, the distance that the bottom edge of end plate projects downwards small cross bar body is less than or equal to the distance that both sides of end plate project respectively to both sides small cross bar body.

[0017] By limiting the distance that the bottom edge of end plate projects downwards small cross bar body is less than or equal to the distance that both sides of end plate project respectively to both sides small cross bar body, the connecting component such as footboard or temporary support structure that is butt jointed with small cross bar can be better fixed and installed on small cross bar body, which helps to enhance the stability and firmness of connecting component, prevents the loosening or disengagement of connecting part under stress. In addition, when the scaffold bears external load, such as dynamic load and static load generated by worker walking on scaffold, carrying materials and the like, the stable connection can prevent the loosening or disengagement of small cross bar at connecting part, thereby ensuring the stability of entire scaffold structure.

[0018] In the second aspect, the utility model further provides a protection device, including footboard and above-mentioned small cross bar, both ends of footboard are respectively provided with hook claw for connecting with small cross bar, and footboard is connected between two small cross bars.

[0019] By combining footboard and small cross bar as protection device, a complete plane is provided for the gap between scaffold and building structure, which facilitates the temporary walking of operating personnel between scaffold and building structure and reduces the risk of temporary walking. Moreover, the both ends of footboard are provided with hook claw for connecting with small cross bar, which makes footboard relatively stable on small cross bar and not easy to slide and cause disengagement, thereby ensuring the stability of temporary plane. In addition, when the scaffold bears external load, such as dynamic load and static load generated by worker walking on scaffold, carrying materials and the like, the stable connection of footboard with hook claw can prevent the loosening or disengagement of scaffold at connecting part, which also indirectly enhances the safety of construction of operating personnel. In addition, the protection device provided by the utility model includes small cross bar, has the same effect as the above-mentioned small cross bar, and will not be described here.

[0020] In the third aspect, the utility model further provides a disc buckle type outer scaffold, including scaffold body and above-mentioned protection device, and the protection device is detachably installed at the gap between disc buckle type outer scaffold and building structure.

[0021] The small cross bar with an end plate in the protective device and the laid footboard with a hook can form a temporary working plane which can effectively provide the working personnel to walk between the protective device and the scaffold body. Meanwhile, the protective device can adapt to different gaps with different widths between the building structure and the disc buckle type outer scaffold, the length of the small cross bar body in the scheme is 300±50mm, the design of the length range makes the small cross bar have better applicability under different scaffold layouts and protection requirements, according to the actual situation on the site, the small cross bar with smaller length can be selected in some local areas which need to be strengthened or the space is relatively narrow, and the small cross bar with larger length can be selected in the place which needs larger protection span, and effective protection can be realized by reasonably adjusting the installation position of the small cross bar and the footboard. In addition, the disc buckle type outer scaffold provided by the utility model comprises the protective device and has the same effect as the above protective device, and details are not described herein.

[0022] Optionally, the utility model provides a disc buckle type outer scaffold, the scaffold body has a vertical rod, the vertical rod is provided with a connecting disc, and the connecting disc is a circular hole plate or a polygonal hole plate which can be connected with multiple direction connectors.

[0023] By installing the connecting disc on the vertical rod, the vertical rod in the whole disc buckle type outer scaffold system has higher universality, and the same specification of vertical rod can be used for the scaffold with different positions and different building angles, and only the connecting direction of the small cross bar needs to be changed to realize diversified building structure. Meanwhile, when the connecting disc is a circular hole plate or a polygonal hole plate which can be connected with multiple direction connectors, the flexibility of the connection between the small cross bar and the vertical rod is greatly increased, and the small cross bar can be conveniently connected with the connecting disc from different directions, which can adapt to various complex construction environments and structure layouts in the building process of the disc buckle type outer scaffold. In addition, the connecting disc with the circular hole plate or the polygonal hole plate can provide stable connection support in multiple directions, and the multi-directional connection can avoid the connection loosening or deformation caused by excessive force in a single direction, thereby enhancing the structural stability of the whole disc buckle type outer scaffold. In addition, the disc buckle type outer scaffold provided by the utility model comprises the protective device and has the same effect as the above protective device, and details are not described herein.

[0024] Optionally, the utility model provides a disc buckle type outer scaffold, the vertical rod is connected with an outer frame tie device above the connecting disc connecting the protective device, the outer frame tie device comprises a horizontal rod and a pre-buried rod, one end of the horizontal rod is connected with the vertical rod perpendicularly through a fastener, the other end of the horizontal rod is connected with the pre-buried rod perpendicularly through a fastener, and the pre-buried rod is pre-buried on the boundary beam of the building structure.

[0025] The stability of the whole disc buckle type outer scaffold is further enhanced by connecting the outer frame tie device above the connecting disc of the protective device, wherein one end of the horizontal rod of the outer frame tie device is connected with the vertical rod through a buckle, and the other end is also connected with the embedded rod of the outer frame tie device through a buckle, thereby forming a triangular stable structure, which can effectively disperse external force and prevent the scaffold from tilting or shaking, and the connection mode of the buckle is convenient for installation and disassembly, and the position of the outer frame tie device can be adjusted according to the actual labor demand on site. Meanwhile, by embedding the embedded rod in the boundary beam of the building structure, the scaffold can be better combined with the building structure, so that the displacement of the scaffold during use is avoided, thereby reducing the safety hazard. By adding the outer frame tie device, the connection between the scaffold and the building structure can be effectively ensured to be firm and reliable. In addition, the disc buckle type outer scaffold provided by the utility model comprises the protective device, has the same effect as the protective device, and will not be described here. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the drawings needed to be used in the specific embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings described below are some embodiments of the utility model, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0027] Figure 1 It is a whole structure schematic view of a disc buckle type outer scaffold of the utility model embodiment;

[0028] Figure 2 It is a whole structure schematic view of a small cross rod of the utility model embodiment;

[0029] Figure 3 It is a whole structure schematic view of a protective device of the utility model embodiment;

[0030] Figure 4 It is Figure 1 It is a local enlarged schematic view of A in the middle.

[0031] BRIEF DESCRIPTION OF DRAWINGS

[0032] 1, small cross rod body;2, connecting disc;3, latch;4, buckle joint;5, blocking piece;6, end plate;7, foot board;8, hook claw;9, scaffold body;10, vertical rod;11, outer frame tie device;12, horizontal rod;13, embedded rod;14, buckle;15, building structure. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model below. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0034] The embodiments of the utility model will be described below in combination with Figures 1 to 3 .

[0035] The first aspect, as shown in Figure 1 and Figure 2 , is a specific embodiment of a small crossbar provided by the present embodiment, specifically comprising a small crossbar body 1, and the length of the small crossbar body 1 is 300 ± 50 mm. Such length setting can well adapt to the majority of cases with a regular gap of 350 mm between the disc buckle type outer scaffold and the building structure 15 when the small crossbar body 1 is applied to the outer scaffold core filling device technology, and the tolerance range of ± 50 mm fully considers the actual gap changes on site, which not only avoids material waste caused by the overlong small crossbar body 1, but also is beneficial to mass production, thereby improving the production efficiency. At the same time, the small crossbar body 1 has a buckle joint 4 at one end for connecting with the connecting disc 2 on the disc buckle type outer scaffold through a bolt 3. This connection mode is simple to operate and can improve the work efficiency of the construction personnel in erecting the scaffold, and the bolt 3 can effectively prevent the small crossbar from loosening or falling off during use, thereby ensuring the close connection of the small crossbar with the main structure of the scaffold. When the scaffold bears the construction load, the stable connection can uniformly transmit the load to the entire scaffold structure, thereby improving the load bearing capacity and safety of the scaffold. In addition, the small crossbar body 1 has a blocking piece 5 at the other end, which plays an important protective role in preventing tools and materials from accidentally falling off the end of the small crossbar during work.

[0036] As shown in Figure 2 and Figure 3 , a specific embodiment of a small crossbar is provided, specifically, the end plate 6 vertically connected to the extended end of the small crossbar is used as the blocking piece 5. Through such a setting, tools, materials or personnel can be effectively prevented from accidentally falling off the end of the small crossbar during work on the scaffold, because the end plate 6 as a relatively flat contact surface can play a certain blocking role. At the same time, the end plate 6 can also effectively prevent the transverse displacement of other components adjacent to the end plate 6 (such as the scaffold board 7), thereby preventing other components from falling off the end of the small crossbar. Furthermore, if the small crossbar needs to be connected with other auxiliary facilities (such as connecting safety guardrails), this vertical end plate 6 can better fit other components, thereby making the connection more closely and reliably.

[0037] As shown in Figure 2 and Figure 3 , a specific embodiment of a small crossbar provided by the present embodiment is described in detail, specifically, the upper edge of the end plate 6 protrudes upwardly from the small crossbar body 1, and the two side edges respectively protrude laterally from the small crossbar body 1. This design of the three-edge-protruding small crossbar body 1 has many advantages. In actual application, when installing the scaffold board 7 or temporary support structure that needs to be connected with the small crossbar, the protruding end plate 6 can serve as a reference point for positioning and fixing, making the installation of these components easier and more accurate. At the same time, the end plate 6 can also play a blocking role, effectively preventing the scaffold board 7 and other structures from detaching from the small crossbar body 1. In addition, the three-edge-protruding end plate 6 significantly improves the bending resistance of the small crossbar as a whole. When the small crossbar bears a certain lateral force, the protruding end plate 6 can increase the resisting moment between the small crossbar and the connecting structure, thereby making the stability of the small crossbar in the scaffold system better, greatly reducing the possibility of excessive deformation or even damage of the small crossbar due to stress.

[0038] As shown in Figure 2 and Figure 3 , a specific embodiment of a small crossbar provided by the present embodiment is described in detail, specifically, the upper edge of the end plate 6 protrudes upwardly from the small crossbar body 1, and the two side edges respectively protrude laterally from the small crossbar body 1. This design has many advantages. On the one hand, in actual application, when installing the connecting components such as scaffold board 7 or temporary support structure that need to be connected with the small crossbar, such design can make the connecting components better fixedly installed on the small crossbar body 1, because the upper edge of the end plate 6 protrudes a larger distance, which can provide more stable support and limiting for the connecting components, thereby enhancing the stability and firmness of the connecting components, effectively preventing the connecting parts from loosening or detaching under stress. On the other hand, in the scaffold system, the small crossbar often bears vertical pressure from the upper construction load, and this design of the end plate 6 with a larger protruding distance on the upper edge can better resist the force in the vertical direction, ensuring the stability of the small crossbar in the vertical direction and avoiding unnecessary movement of the small crossbar in the vertical direction. In this way, the stability and safety of the entire scaffold structure can be maintained, providing reliable protection for the construction process.

[0039] As shown in Figure 2 and Figure 3As shown, a specific implementation method of a small cross bar provided in this embodiment, specifically, the small cross bar body 1 protrudes downward from the bottom edge of the end plate 6. This design has many advantages. First, it can enhance the deformation resistance of the end plate 6, so that the end plate 6 forms a more stable structure in three-dimensional space. Compared with the end plate 6 whose bottom edge does not protrude, it can disperse stress more evenly, effectively maintain the integrity of the end structure of the small cross bar, and ensure that the entire small cross bar works stably in the scaffolding system. Secondly, when the small cross bar needs to be connected with other auxiliary components during use, the downward protruding bottom edge can provide more connection points or contact surfaces, which not only helps to enhance the firmness of the connection, but also prevents the connection parts from loosening or detaching when subjected to force, thereby effectively ensuring the structural stability of the entire scaffolding system.

[0040] like Figure 2 and Figure 3 As shown, a specific implementation method of a small crossbar provided in this embodiment is provided. Specifically, the distance that the bottom edge of the end plate 6 protrudes downward from the small crossbar body 1 is less than or equal to the distance that the two side edges of the end plate 6 protrude to the two sides of the small crossbar body 1. This design enables the connecting components such as the scaffolding board 7 or temporary support structure that are connected to the small crossbar to be better fixed on the small crossbar body 1. In this way, it helps to greatly enhance the stability and firmness of the connecting components, and effectively prevent the connection parts from loosening or detaching when subjected to force. In addition, when the scaffolding is subjected to external loads, such as dynamic loads and static loads generated by workers walking on the scaffolding, carrying materials, etc., this stable connection can effectively prevent the small crossbar from loosening or detaching at the connection part, thereby effectively ensuring the stability of the entire scaffolding structure and providing reliable protection for construction safety.

[0041] Second, as Figure 2 、 Figure 3 and Figure 2As shown, a specific embodiment of the protective device provided by the present embodiment comprises the scaffold board 7 and the above-mentioned small cross bars, and the two ends of the scaffold board 7 are respectively provided with the claws 8 for connecting with the small cross bars, which are connected between the two small cross bars. The combined protective device forms a complete plane for the gap between the scaffold and the building structure 15, greatly facilitates the temporary walking of the operator between the scaffold and the building structure 15, and reduces the risk in the walking process. At the same time, the claws 8 designed at the two ends of the scaffold board 7 for connecting with the small cross bars enable the scaffold board 7 to be relatively stable on the small cross bars and not prone to sliding to cause unhooking, thereby effectively guaranteeing the stability of the temporary plane. In addition, when the scaffold bears external loads, such as dynamic loads and static loads generated by the walking of workers on the scaffold, the carrying of materials and the like, the stable connection of the scaffold board 7 with the claws 8 can effectively prevent the scaffold from loosening or separating at the connection part, thereby indirectly improving the safety of the construction of the operator. In addition, the protective device provided by the present embodiment comprises the small cross bars, which have the same effect as the above-mentioned small cross bars, and thus will not be described herein.

[0042] In a third aspect, as shown in Figure 3 、 Figure 1 and Figure 3 , a specific embodiment of the disc buckle type outer scaffold provided by the present embodiment comprises the scaffold body 9 and the above-mentioned protective device, which can be detachably installed at the gap between the disc buckle type outer scaffold and the building structure 15. Through such an installation mode, the small cross bars with the end plates 6 and the laid scaffold boards 7 with the claws 8 in the protective device can jointly form a temporary working plane, which can provide effective support for the walking of the operator between the protective device and the scaffold body 9. At the same time, the protective device can well adapt to various widths of the gap formed between different building structures 15 and the disc buckle type outer scaffold, wherein the length of the small cross bar body 1 is designed to be 300±50mm. This length range has great advantages, enabling the small cross bar to exhibit good applicability under different scaffold layouts and protection requirements. For example, according to the actual situation on site, small cross bars with smaller lengths can be flexibly selected in some local areas where protection needs to be enhanced or the space is relatively narrow, while in places where larger protection spans are required, small cross bars with larger lengths can be selected to effectively protect the scaffold body 9 by reasonably adjusting the installation positions of the small cross bars and the scaffold boards 7. In addition, the disc buckle type outer scaffold provided by the present embodiment comprises the protective device, and thus has the same effect as the above-mentioned protective device, and thus will not be described herein.

[0043] As shown in Figure 4 、 Figure 1 and Figure 3As shown, the embodiment provides a specific implementation of a disc buckle type outer scaffold, and in particular, a vertical rod 10 is arranged on the scaffold body 9, and a connecting disc 2 is assembled on the vertical rod 10. The connecting disc 2 is a circular hole plate or a polygonal hole plate with a plurality of direction buckling joints 4. By installing such a connecting disc 2 on the vertical rod 10, the versatility of the vertical rod 10 in the entire disc buckle type outer scaffold system is significantly improved. This means that the same specification of vertical rod 10 can be used for scaffolds in different positions and different building angles, and only the buckling direction of the small cross bar needs to be changed to achieve diversified building structures. At the same time, when the connecting disc 2 is a circular hole plate or a polygonal hole plate with a plurality of direction buckling joints 4, the flexibility of the connection between the small cross bar and the vertical rod 10 is greatly increased. The small cross bar can be conveniently buckled with the connecting disc 2 from different directions, and can adapt to various complex construction environments and structural layouts in the building process of the disc buckle type outer scaffold. In addition, the circular hole plate or the polygonal hole plate of the connecting disc 2 can provide stable buckling support in multiple directions. Multi-directional buckling can prevent the connection from loosening or deforming due to excessive force in a single direction, thereby enhancing the structural stability of the entire disc buckle type outer scaffold. Furthermore, the disc buckle type outer scaffold provided by the utility model also includes a protection device, which has the same effect as the protection device mentioned above, and will not be described here.

[0044] As shown in Figure 4 , Figure 1 and Figure 3 Figure 4 Figure 1 Figure 3 Figure 4 , the embodiment provides a specific implementation of a disc buckle type outer scaffold, and in particular, an outer frame tie device 11 is connected above the connecting disc 2 of the protection device on the vertical rod 10. The outer frame tie device 11 includes a horizontal rod 12 and a pre-buried rod 13. One end of the horizontal rod 12 is connected with the vertical rod 10 through a buckle 14, and the other end is also connected with the pre-buried rod 13 through the buckle 14, thereby forming a triangular stable structure. This structure can effectively disperse external force and prevent the scaffold from tilting or shaking. The buckle 14 connection method is convenient for installation and disassembly, and the position of the outer frame tie device 11 can be adjusted according to the actual labor demand on site. At the same time, the pre-buried rod 13 is pre-buried on the edge beam of the building structure 15, so that the scaffold can be better combined with the building structure 15, and displacement during use is avoided, thereby reducing safety hazards and effectively ensuring that the connection between the scaffold and the building structure 15 is firm and reliable. In addition, the disc buckle type outer scaffold of the utility model includes the above-mentioned protection device, which has the same effect as the protection device, and will not be described here.

[0045] Of course, the above description is not restrictive, in some alternative embodiments, the fastener can also be replaced with the way of connecting the buckle joint 4 with the latch 3, by setting the connecting disc 2 on the pre-buried rod 13 and the horizontal rod 12, and by using the buckle joint 4 and the latch 3 to cooperate, the external frame pulling device 11 is fixed, this kind of quick connection mode can save a lot of manpower and time cost.

[0046] Although the embodiments of the present application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope of the present application.

Claims

1. A small crossbar, characterized in that, The invention relates to a small crossbar body (1) with a length of 300±50mm, one end of which is provided with a buckle joint (4) for connecting with a connecting disc (2) on a disc buckle type external scaffold through a latch (3), and the other end of which is provided with a blocking piece (5).

2. The small rod according to claim 1, characterized in that The blocking piece (5) is an end plate (6) vertically connected to the extended end of the small crossbar body (1).

3. The small rod according to claim 2, characterized in that The upper edge of the end plate (6) protrudes upwardly from the small crossbar body (1), and the two side edges of the end plate (6) protrude laterally from the small crossbar body (1).

4. The small rod according to claim 3, characterized in that The distance by which the upper edge of the end plate (6) protrudes upwardly from the small crossbar body (1) is greater than the distance by which the two side edges of the end plate (6) protrude laterally from the small crossbar body (1).

5. The small rod according to claim 3, characterized in that The bottom edge of the end plate (6) protrudes downwardly from the small crossbar body (1).

6. The small rod according to claim 5, characterized in that The distance by which the bottom edge of the end plate (6) protrudes downwardly from the small crossbar body (1) is less than or equal to the distance by which the two side edges of the end plate (6) protrude laterally from the small crossbar body (1).

7. A protective device characterized by The invention relates to a scaffold body (9) and the protective device according to claim 7, which is detachably installed at the gap between the disc buckle type external scaffold and the building structure (15). The scaffold body (9) is provided with a vertical rod (10) having a connecting disc (2) with a circular or polygonal hole plate capable of buckling a plurality of directional buckle joints (4).

8. A disc-bolted external scaffold characterized by, The vertical rod (10) is provided with an external frame tie device (11) above the connecting disc (2) connecting the protective device, which comprises a horizontal rod (12) and a pre-buried rod (13), one end of the horizontal rod (12) being vertically connected to the vertical rod (10) through a buckle (14), the other end of the horizontal rod (12) being vertically connected to the pre-buried rod (13) through a buckle (14), and the pre-buried rod (13) being pre-buried on the edge beam of the building structure (15). The invention relates to a scaffold body (9) and the protective device according to claim 7, which is detachably installed at the gap between the disc buckle type external scaffold and the building structure (15).

9. The disc-buckle exterior scaffold of claim 8, wherein, The scaffold body (9) is provided with a vertical rod (10) having a connecting disc (2) with a circular or polygonal hole plate capable of buckling a plurality of directional buckle joints (4).

10. The disc-buckle exterior scaffold of claim 9, wherein, The vertical rod (10) is provided with an external frame tie device (11) above the connecting disc (2) connecting the protective device, which comprises a horizontal rod (12) and a pre-buried rod (13), one end of the horizontal rod (12) being vertically connected to the vertical rod (10) through a buckle (14), the other end of the horizontal rod (12) being vertically connected to the pre-buried rod (13) through a buckle (14), and the pre-buried rod (13) being pre-buried on the edge beam of the building structure (15).

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