A cantilevered I-beam guard

Abstract

The utility model relates to a kind of cantilevered H-shaped steel protective devices, the cantilevered H-shaped steel outer whole is built with vertical pole and cross bar, the one side of cantilevered H-shaped steel is fixedly arranged, the other side is suspended arrangement, the cantilevered H-shaped steel is equipped with first closure plate and second closure plate in outside separation package, first closure plate is installed in the first side and bottom of cantilevered H-shaped steel, second closure plate is installed in the second side and top of cantilevered H-shaped steel.In the utility model, first closure plate can directly block H-shaped steel body and the article placed around from outside and bottom by covering the first side and bottom of cantilevered H-shaped steel, second closure plate can accurately protect the space area between vertical pole and cross bar above cantilevered H-shaped steel by covering the second side and top of cantilevered H-shaped steel;And first closure plate and second closure plate of separation package can also provide enough open space, for finding valuable article fallen in first closure plate.

Description

Technical Field

[0001] This utility model relates to the field of building construction protection, specifically to a protective device for cantilevered I-beams. Background Technology

[0002] Cantilevered I-beam scaffolding used in high-rise buildings refers to scaffolding whose structure is unloaded onto rigid cantilever beams attached to the building structure. It is used for main structure or decoration phases of construction and for safety protection purposes. Each section of the scaffolding must not exceed 20 meters in height. Rigid protection is required at the location where the first layer of I-beams of the cantilevered scaffolding is laid. Currently, the bottom rigid protection of cantilevered scaffolding often uses thinner scaffold boards installed end-to-end. However, given that this project involves the construction of the upper main structure and the lower exterior wall insulation, to ensure on-site construction safety and the sealing of the rigid protection, additional rigid protection devices are needed on top of the existing scaffold board protection.

[0003] The existing template-based installation structure only provides support and protection from the vertical angle, but does not provide protection from the horizontal rolling and sliding angle, which makes it easy for objects to fall from heights; moreover, the bottom protection support of the single layer is weak, and further hard protection devices are needed. Utility Model Content

[0004] To address the shortcomings of the existing technology, this utility model provides a protective device for cantilevered I-beams.

[0005] The technical solution of this utility model is as follows: A protective device for a cantilevered I-beam, wherein the cantilevered I-beam is integrally constructed with uprights and crossbars, one side of the cantilevered I-beam is fixedly installed and the other side is suspended, the cantilevered I-beam is provided with a first sealing plate and a second sealing plate that are separated and wrapped around the outside, the first sealing plate is installed on the first side and bottom of the cantilevered I-beam, and the second sealing plate is installed on the second side and top of the cantilevered I-beam. In this invention, the first sealing plate, by covering the first side and bottom of the cantilevered I-beam, can directly prevent the I-beam body and surrounding tools, connectors, and other items from falling from the outside and bottom, avoiding safety risks to the construction area below caused by items sliding down the side or bottom of the I-beam, and achieving directional protection against falling objects from the I-beam and surrounding area; the second sealing plate, by covering the second side and top of the cantilevered I-beam, can accurately cover the space above the I-beam and between the uprights and crossbars. When scaffolding fragments, work tools, or other items slide down the support frame composed of the uprights and crossbars, the second sealing plate can directly intercept such falling objects, preventing them from penetrating the gap between the uprights and crossbars and hitting the I-beam and the area below, thus filling the protection blind spot between the uprights and crossbars above the I-beam. When the first sealing plate is installed at the bottom of the cantilevered I-beam, its body fits tightly against the bottom of the I-beam. When the cantilevered I-beam is subjected to loads such as its own weight, protective loads, and temporary work loads, causing it to deflect downwards, the first sealing plate can provide an upward supporting reaction force to the bottom of the I-beam, effectively suppressing the downward deformation of the I-beam, reducing the bending stress at the bottom of the I-beam, thereby enhancing the bottom support stability of the cantilevered I-beam and extending its service life. The separate first and second sealing plates can also provide sufficient open space for finding valuables that have fallen into the first sealing plate.

[0006] As a preferred embodiment, the cantilevered I-beams installed at the bottom of the uprights and crossbars are fitted with a first sealing plate and a second sealing plate. In this invention, the bottom cantilevered I-beam protection is an upgraded solution compared to the protection of multiple top cantilevered I-beams. The protection of multiple top cantilevered I-beams can be based on a tie point and a steel rope and wall-drilled fixed connection structure.

[0007] As a preferred embodiment, the bottom of the cantilevered I-beam is provided with several square steel bars arranged in a row, and the bottom of the square steel bars is connected to the first closing plate. In this utility model, the arrangement of the square steel bars and the first closing plate adds a linear constraint structure along the main body of the cantilevered I-beam, effectively counteracting the adverse trend of downward deflection caused by protective loads and temporary operation loads, thereby enhancing the bottom support strength of the cantilevered I-beam, avoiding damage to the I-beam structure caused by long-term downward deflection, and extending its service life.

[0008] As a preferred embodiment, an outer column is vertically installed on the first side of the cantilevered I-beam. The first enclosing plate includes a first vertical plate and a first horizontal plate. The first vertical plate is connected to the outer column, and the first horizontal plate is installed at the bottom of the square steel. In this invention, the outer column is connected to the first vertical plate using existing methods such as steel rope winding, snap-fit ​​and slot connection, or magnetic adsorption. Furthermore, the first vertical plate extends to the outside of the frame composed of the horizontal beam and the uprights, thus blocking and protecting objects falling from around the cantilevered I-beam, reducing the risk of objects being thrown from heights.

[0009] As a preferred embodiment, the second side of the cantilevered I-beam is provided with a clamping member, the bottom of which is fixedly connected to the ground. The outer surface of the cantilevered I-beam is provided with a fitting groove and a fitting member, and the second side of the cantilevered I-beam penetrates the clamping member and is fixed to the ground. In this utility model, the bottom of the clamping member on the second side can be pre-fixed, for example, by welding it to the reinforcing bars in the structure such as the roof beam of the building, and then strengthening the fixing strength by pouring cement to achieve pre-fixation. Subsequently, the cantilevered I-beam penetrates the clamping member and is fixed to it.

[0010] Specifically, the clamping components include a U-shaped pressure ring, pressure plates fitted at both ends of the top of the pressure ring, and locking screws on the pressure plates. The I-beam penetrates the pressure plates, the pressure ring, and the ground to form a clamping space, and is fixed downward by screws on the top of the pressure plates.

[0011] As a preferred embodiment, the enclosure includes a first upright and a second upright. The second enclosure plate includes a first vertical section perpendicular to the inner side of the first upright, a horizontal section horizontally mounted on the bottom crossbar, and a second vertical section perpendicular to the inner side of the second upright and the inner side of the pressure ring. The second enclosure plate has a multi-sectioned, zigzag shape. The first vertical section and the horizontal section form a passageway and an upper protective layer between the bottom crossbar and the first and second uprights. The upper protective layer extends through the second vertical section to the second side of the I-beam, increasing the overall fixing strength of the second enclosure plate and forming a rigid protection against deformation in the length direction of the bottom crossbar. The first vertical section, standing vertically inside the first upright, not only protects items on the bottom crossbar from falling but also effectively prevents the risk of limbs slipping outwards from the horizontal section and further away from the first upright in the event of a fall.

[0012] As a preferred embodiment, the horizontal section is provided with at least one first tie groove, the bottom of the cantilevered I-beam is provided with several tie points, and the top of the vertical and horizontal bars is provided with fixing points. The cantilevered I-beam is provided with a steel rope that is suspended through the tie points and fixing points. To avoid the second closing plate interfering with the suspension function of the steel rope and the cantilevered I-beam, the first tie groove provides a penetration space, and the tie rope and clamping device together achieve a dual fixing effect on the cantilevered I-beam.

[0013] As a preferred option, the bottom of the second vertical section is provided with a clearance groove to accommodate the cantilevered I-beam.

[0014] As a preferred embodiment, a support tube is fixedly installed on the bottom crossbar, and the upper side of the support tube is connected to the horizontal section.

[0015] As a preferred embodiment, the bottom sides of the first and second uprights and the side of the cantilevered I-beam are provided with reinforcing bars for welding and fixing, and the bottom of the reinforcing bars extending at the welding and fixing points are provided with the tie points. To achieve a fixed connection between the cantilevered I-beam and the uprights, this utility model also includes reinforcing bars welded between the two, the length of the reinforcing bars being at least 25cm, and the reinforcing bars extending downwards to provide tie points on the rigid structure, that is, providing partial support for the uprights and also tie support for the cantilevered I-beam, thus achieving integration of fixed connection and suspension setup.

[0016] The advantages of this utility model based on the above solution are as follows: This invention achieves precise protection and structural reinforcement of the cantilevered I-beam and its surrounding area by installing a first and a second sealing plate on the outer side of the cantilevered I-beam at the bottom of the uprights and crossbars. The first sealing plate covers the outer side and bottom of the cantilevered I-beam, effectively preventing tools, connectors, and other items placed around it from sliding off the outside or falling from the bottom, thus avoiding safety risks to the construction area below. The second sealing plate covers the inner side and top of the cantilevered I-beam, precisely intercepting scaffolding fragments, tools, and other items sliding between the uprights and crossbars above the I-beam, preventing them from penetrating the gaps and falling downwards, thus filling the protection blind spot above the I-beam. Simultaneously, the first sealing plate fits tightly against the bottom of the cantilevered I-beam, effectively suppressing downward deflection caused by loads, reducing structural stress concentration, enhancing the bottom support stability of the cantilevered I-beam, and extending its service life. Overall, it achieves comprehensive protection and structural reinforcement of the cantilevered I-beam, ensuring construction safety. Attached Figure Description

[0017] Figure 1 This is a partial side view of the structure of this utility model; Figure 2 This is a front view of the clamping component of this utility model; Figure 3 This is a front view structural diagram of the building to which this utility model is applied; Figure 4 This is a front view of the perforated mesh unit in this utility model; In the diagram, 1. First vertical plate; 2. Second closed plate; 3. First horizontal plate; 4. Square steel; 5. Cantilevered I-beam; 6. Upright pole; 7. Steel rope; 8. Reinforcing bar; 9. Right-angle fastener; 10. Clamping component; 11. Fitting component; 12. Dense safety net; 13. Scissor brace; 14. Perforated mesh unit. Detailed Implementation

[0018] To better understand the purpose, technical solution, and technical effects of this utility model, the following description, in conjunction with the accompanying drawings and embodiments, will provide further explanation. It should be noted that similar reference numerals and letters in the following drawings indicate similar items; therefore, once an item is defined in one drawing, it does not need further definition and explanation in subsequent drawings. It is also stated that the embodiments described below are only for explaining this utility model and are not intended to limit it.

[0019] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is referred to as "connected to" another component, it can be directly connected to the other component or there may be an intermediate component.

[0020] The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product is usually placed when in use, or the orientation or positional relationship in which a person skilled in the art would normally understand it, or the orientation or positional relationship in which the product is usually placed when in use. It is only for the purpose of facilitating the description of this application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Example 1

[0021] like Figures 1-4 As shown, a cantilevered I-beam protective device is constructed, for example, using a No. 18 cantilevered I-beam 5 as the core load-bearing component. Vertical poles 6 and horizontal poles are erected on the outside of the cantilevered I-beam 5 and connected perpendicularly to each other. The vertical poles 6 are made of φ48mm×3.2mm steel pipes, and the horizontal poles are of the same specifications as the vertical poles 6. They are detachably connected by right-angle fasteners 9 to form a rectangular support frame around the cantilevered I-beam 5. The frame is 500mm wide, and the vertical poles 6 are spaced 1.5m apart.

[0022] The protective device is installed on the side of the main building and is equipped with a steel rope 7. The first side of the cantilevered I-beam 5 is suspended from the pre-embedded fixing point of the upper main structure through the steel rope 7. A 6×19 structure and a steel rope 7 with a diameter of φ16mm can be selected. The two ends of the steel rope 7 can be connected to the tie point of the cantilevered I-beam 5 and the fixing point of the main building structure through rope clamps, respectively, to balance the load of the cantilever end and prevent the cantilever end from deflecting.

[0023] The pre-fixation of the cantilevered I-beam 5 is achieved through rigid fixation using the clamping member 10. The clamping member 10 includes a U-shaped pressure ring, pressure plates fitted at both ends of the top of the pressure ring, and locking screws on the pressure plates. First, the bottom of the U-shaped pressure ring is fully welded to the reinforcing steel bar 8 in the top beam of the building. Then, concrete is poured to wrap the bottom of the pressure ring. Pre-fixation is completed when the concrete strength reaches a preset strength, such as 70%, ensuring that there is no relative displacement between the pressure ring and the main structure. The type of concrete can be selected according to different requirements. At the same time, the outer side of the cantilevered I-beam 5 is provided with a fitting groove and a fitting member 11. After the fitting member 11 is interference-fitted into the fitting groove, the second side of the cantilevered I-beam 5 penetrates the clamping member 10 and is fixed to the ground.

[0024] After the cantilevered I-beam 5 is pre-fixed, a support frame is erected around the cantilevered I-beam 5, including the first and second uprights and the reinforcing bars 8, as follows: Along the length of the cantilevered I-beam 5, the first and second uprights are erected vertically on its first and second sides, both of which are φ48mm×3.2mm steel pipes: The first upright is located on the first side of the cantilevered I-beam 5, and its bottom is fixed to the side of the cantilevered I-beam 5 by welding at least 25cm long reinforcing bars 8. One end of the reinforcing bar 8 is fully welded to the upright 6, and the other end is fully welded to the flange of the cantilevered I-beam 5 to form a fully welded support; The second upright is located on the second side of the cantilevered I-beam 5, and its bottom is also fixed to the side of the I-beam by welding reinforcing bars 8, and the distance between it and the inner side of the pressure ring is maintained at 30cm. The spacing of the uprights 6 is set at 1.2m, and the top height is set according to the construction needs to ensure that the protection height meets the standard.

[0025] A horizontal bar is installed between the uprights 6. The horizontal bar has the same specifications as the uprights 6 and is detachably connected by a right-angle coupler 9. The bottom horizontal bar is located at the bottom of the vertical bar 6, and its two ends are respectively fastened to the first vertical bar 6 and the second vertical bar 6 to form the bottom edge of the frame; Multiple parallel top horizontal bars are located at the top of the uprights 6 and are flush with the top of the uprights 6 to enhance the overall integrity of the frame; The connecting rod is located at the bottom of the horizontal bar and between the two vertical bars 6.

[0026] The first enclosure plate is installed on the first side and bottom of the cantilevered I-beam 5, supported by the keel square steel 4, and also integrates the function of tie points. The first enclosure plate includes a first vertical plate 1 and a first horizontal plate 3, both of which are 3mm thick perforated steel plates. The first vertical plate 1 is installed vertically on the first side of the cantilevered I-beam 5 at a height of 500mm, and is temporarily fixed to the outer column by steel rope 7 to ensure that the first vertical plate 1 covers the outer side of the I-beam to the edge of the frame. The first horizontal plate 3 is installed horizontally at the bottom of the square steel 4, and its length extends to the building facade at the bottom of the cantilevered I-beam 5. The first horizontal plate 3 is fixed to the bottom of the square steel 4 by self-tapping screws to form a bottom protection structure.

[0027] The bottom of the reinforcing bar 8, which extends from the weld between the upright 6 and the cantilevered I-beam 5, is welded with a metal ring as a tie point, and the spacing between the tie points is the same as the spacing between the upright 6.

[0028] The second sealing plate 2 is installed on the second side and top of the I-beam. The second sealing plate 2 includes a first vertical section, a horizontal section and a second vertical section. The first vertical section is vertically fixed to the inside of the first upright 6 to form inner protection. The horizontal section is horizontally laid on the bottom crossbar, and its length covers the bottom crossbar and the clamping member 10. The lower surface is welded to the bottom crossbar through a support tube. The support tube is used to enhance the horizontal section's resistance to downward deflection. Two first pull grooves are opened on the horizontal section, corresponding to the tie points at the bottom of the cantilevered I-beam 5. The steel rope passes through the first pull grooves to avoid the second sealing plate 2 interfering with the steel rope suspension. The second vertical section is vertically installed on the inside of the second upright 6 and the inside of the pressure ring, and is fixed to the second upright 6 through a right-angle fastener 9. The bottom is provided with an inverted U-shaped clearance groove, which just accommodates the upper flange of the I-beam. Rubber pads are pasted in the groove at the contact point with the I-beam to reduce friction and seal the gap.

[0029] The first and second sealing plates 2 are provided with a number of perforated mesh units 14 arranged in a row. The perforated mesh unit 14 includes three small rectangular meshes on the upper side and two large rectangular meshes on the lower side. The two rectangular meshes are provided with intersecting first flat tube skeletons.

[0030] The outer column is located on the first side of the cantilevered I-beam 5, and its top is connected to the first upright 6 through a horizontal short pipe to form a horizontal support, which enhances the outer column's resistance to lateral displacement and ensures the stability of the first vertical plate 1.

[0031] One end of the steel rope is connected to the tie point at the bottom of the I-beam, and the other end passes through the first groove of the horizontal section and is connected to the pre-embedded fixing point above the vertical pole 6 and the horizontal bar. The tensioning force and the clamping member 10 form a double fixation to balance the load at the cantilever end of the I-beam.

[0032] In the entire erected uprights 6 and crossbars, there are also scissor braces 13 on their outer sides and a dense safety net 12 that fully covers the outside of the scissor braces 13. There are guardrails between the inner side of the scissor braces 13 and the outer uprights 6. The angle between the scissor braces 13 and the crossbars is 45 degrees.

[0033] This invention achieves precise protection and structural reinforcement of the cantilevered I-beam 5 and its surrounding area by installing a first sealing plate and a second sealing plate 2 on the outer side of the cantilevered I-beam 5 at the bottom of the uprights 6 and crossbars. The first sealing plate covers the outer side and bottom of the cantilevered I-beam 5, effectively preventing tools, connectors, and other items placed around it from sliding off the outside or falling from the bottom, thus avoiding safety risks to the construction area below. The second sealing plate 2 covers the inner side and top of the cantilevered I-beam 5, precisely intercepting scaffolding fragments, tools, and other items sliding between the uprights 6 and crossbars above the I-beam, preventing them from penetrating the gaps between the uprights 6 and crossbars and falling downwards, filling the protection blind spot above the I-beam. Simultaneously, the first sealing plate fits tightly against the bottom of the cantilevered I-beam 5, effectively suppressing downward deflection caused by loads, reducing structural stress concentration, enhancing the bottom support stability of the cantilevered I-beam 5, and extending its service life. Overall, it achieves comprehensive protection and structural reinforcement of the cantilevered I-beam 5, ensuring construction safety.

[0034] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A protective device for cantilevered I-beams, characterized in that, The cantilevered I-beam is externally supported by uprights and crossbars. One side of the cantilevered I-beam is fixed, and the other side is suspended. The cantilevered I-beam is equipped with a first closed plate and a second closed plate that are separated and wrapped around its outer side. The first closed plate is installed on the first side and bottom of the cantilevered I-beam, and the second closed plate is installed on the second side and top of the cantilevered I-beam.

2. The cantilevered I-beam protective device according to claim 1, characterized in that, The cantilevered I-beams installed at the bottom of the uprights and crossbars are fitted with a first sealing plate and a second sealing plate.

3. The cantilevered I-beam protective device according to claim 1, characterized in that, The bottom of the cantilevered I-beam is provided with several square steel bars arranged in a row, and the bottom of the square steel bars is connected to the first closing plate.

4. The cantilevered I-beam protective device according to claim 3, characterized in that, An external column is vertically installed on the first side of the cantilevered I-beam. The first closed plate includes a first vertical plate and a first horizontal plate. The first vertical plate is connected to the external column, and the first horizontal plate is installed at the bottom of the square steel.

5. A protective device for cantilevered I-beams according to claim 1, characterized in that, The second side of the cantilevered I-beam is equipped with a clamping element, the bottom of which is fixedly connected to the ground; the outer side of the cantilevered I-beam is equipped with a fitting groove and a fitting element.

6. A protective device for cantilevered I-beams according to claim 4, characterized in that, It includes a first upright and a second upright, and the second closing plate includes a first vertical section that is vertical to the inside of the first upright, a horizontal section that is horizontally installed on the bottom crossbar, and a second vertical section that is vertically installed to the inside of the second upright and the inside of the pressure ring.

7. A protective device for cantilevered I-beams according to claim 6, characterized in that, The horizontal section is provided with at least one first pull groove, the bottom of the cantilevered I-beam is provided with several tie points, the top of the uprights and crossbars is provided with fixing points, and the cantilevered I-beam is provided with steel ropes that are suspended through several tie points and fixing points.

8. A protective device for cantilevered I-beams according to claim 6, characterized in that, The bottom of the second vertical section is provided with a clearance groove to accommodate the cantilevered I-beam.

9. A protective device for cantilevered I-beams according to claim 6, characterized in that, A support tube is fixed on the bottom crossbar, and the upper side of the support tube is connected to the horizontal section.

10. A protective device for cantilevered I-beams according to claim 7, characterized in that, The bottom side of the first and second uprights and the side of the cantilevered I-beam are provided with reinforcing bars for welding and fixing, and the bottom of the reinforcing bars extending to the welding and fixing point are provided with the tie point.

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