Steel support anti-falling safety mechanism and construction method thereof

Abstract

The application discloses a steel support anti-falling safety mechanism and a construction method thereof, which comprises the following steps: the hanging component is connected with the surrounding purlin through the clamping groove, and the hanging component is further stabilized by cooperating with the clamp, the steel strand cable and the anchor combination of the hanging component provide reliable lifting and limiting effects on the steel support from the bottom, the safety of the construction site is greatly improved, and the personnel casualty and engineering accident risk caused by the falling of the steel support are reduced.

Description

Technical Field

[0001] This invention relates to the field of steel structure fall protection technology, and in particular to a steel-supported fall protection safety mechanism and its construction method. Background Technology

[0002] In traditional steel bracing systems, the connection between the steel bracing and the steel walers is relatively simple, often relying on ordinary bolts or welding for fixing. However, these conventional connection methods reveal many shortcomings in complex engineering environments. For example, during long-term construction, due to factors such as settlement and displacement of the surrounding soil, as well as vibration and impact during construction, ordinary bolt connections are prone to loosening, leading to decreased stability of the steel bracing and a risk of collapse. While welded connections have high initial strength, they lack flexibility in later maintenance, adjustment, and handling of dynamic load changes. Once a small crack or damage occurs at the weld, it can rapidly propagate, endangering the safety of the entire steel bracing system.

[0003] Furthermore, traditional techniques for controlling the vertical displacement of steel supports are often insufficiently precise and effective. The lack of specially designed fall protection and displacement limiting devices means that when steel supports are subjected to unexpected loads or uneven soil settlement, significant vertical displacement may occur, potentially compromising the integrity of the foundation pit retaining structure and leading to serious accidents such as foundation pit collapse. Therefore, there is an urgent need for an innovative steel support fall protection safety mechanism and a compatible construction method to address the problems of unstable steel support connections, poor fall protection performance, and insufficient vertical displacement control in existing technologies. This is crucial for ensuring safe and efficient construction of foundation pit projects and improving the overall quality and safety of building projects. Therefore, a steel support fall protection safety mechanism and its construction method are proposed to solve the aforementioned problems. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings mentioned above by providing a steel-supported fall prevention safety mechanism and its construction method, thereby enabling safe and efficient construction of foundation pit projects and improving the overall quality and safety of building projects.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a steel-supported fall-prevention safety mechanism, comprising:

[0006] The hanging components are provided in two sets. Each hanging component includes a fixed plate, a supporting plate, and a connecting bracket. The supporting plate is vertically mounted on the fixed plate. The connecting bracket is used to connect the fixed plate and the supporting plate. The fixed plate has a key-shaped hole and a snap-fit ​​component.

[0007] A clamp is provided on a hanging member through a keyhole, and the hanging member is fixed to the waler by the clamp and a snap-fit ​​member.

[0008] A suspension component, comprising a steel strand cable and an anchor, wherein a limiting hole is provided on the support plate, and the steel strand cable is fixed in the limiting hole on the support plate by the anchor, and the steel strand cable is used to support the steel support;

[0009] A fixed weldment is fixed to the steel sheet pile;

[0010] Turnbuckle, with connecting hooks at both ends, the turnbuckle connects the fixed weldment and the hanging component through the connecting hooks.

[0011] Furthermore, the support plate has multiple sets of limiting holes, which are equidistantly distributed.

[0012] The keyway is elongated.

[0013] Furthermore, the clamp includes an adjusting bolt, an elastic washer, a slider, and a clamping plate. The slider slides vertically within the keyway to adjust the position of the clamp.

[0014] The slider is provided with a threaded hole, which is adapted to the thread of the adjusting bolt;

[0015] The clamping plate has a through hole, the elastic washer is located between the slider and the clamping plate, and the adjusting bolt passes through the clamping plate, the elastic washer and the slider, and the adjusting bolt cooperates with the slider to fix the position of the clamp.

[0016] Furthermore, the snap-fit ​​component is located at the bottom of the side facing the waler, and the snap-fit ​​component has a snap-fit ​​groove that is adapted to the waler.

[0017] Furthermore, a spring is fitted onto the adjusting bolt to abut against the pressure plate, and the spring is used to provide axial preload.

[0018] Furthermore, on the fixed weldment welded to the sheet pile, one end of the turnbuckle is connected to the fixed weldment via a steel wire rope, and the other end of the turnbuckle is connected to the hanging component via a steel wire rope passing through the key hole. The turnbuckle is used to provide tension to the limiting hole.

[0019] Another technical solution described in this invention is: a construction method for a steel-supported fall arrest safety mechanism, comprising the following steps:

[0020] S1. Construction of the main structure of the foundation pit retaining wall: Complete the construction of steel sheet piles, walers and steel supports according to the design requirements.

[0021] S2. Installation of the hanging component: Adjust the adjusting bolts of the clamp to make the clamp loose and raised, align the vertical steel plate of the hanging component with the waler, then make the slot at the bottom of the hanging component engage with the bottom of the waler, lower the clamp and tighten the adjusting bolts to complete the installation of the hanging component.

[0022] S3. Installation of suspension components: Prepare steel strands of appropriate length, pass both ends of the steel strands through the limiting holes opened in the hanging components, and reserve sufficient anchoring distance. Anchor the steel strands to the hanging components through anchors so that the two form a whole.

[0023] S4. Turnbuckle installation: Weld the fixing weldment to the corresponding position on the steel sheet pile surface according to the position of the steel support and the hanging component. Prepare two steel wire ropes of appropriate length. Tie one steel wire rope to the fixing weldment and connect it to the turnbuckle. Pass the other steel wire rope through the key hole and tie it to the hanging component and connect it to the turnbuckle. Adjust the turnbuckle to generate tension and play a tying role.

[0024] S5. Quality Inspection: Conduct quality inspections on all structures of the completed fall arrest mechanism, including visual inspection of the connection parts, dimensional measurement, and mechanical performance testing, to ensure that the connection quality meets the design requirements.

[0025] The present invention has the following beneficial effects:

[0026] 1. Excellent fall protection performance: The hanging components are tightly connected to the walers through the slots and further stabilized with the clamps, effectively preventing the steel supports from falling due to loose connections. The combination of steel strand cables and anchors of the suspension components provides reliable lifting and limiting effects on the steel supports from below, greatly improving the safety of the construction site and reducing the risk of personal injury and engineering accidents caused by the falling of steel supports.

[0027] 2. Reliable connection stability: The keyed holes and limiting holes designed on the steel plate enable precise installation of the clamps and suspension components. When all components work together, the force is evenly and reasonably distributed, effectively avoiding connection failure caused by local stress concentration. The spring at one end of the adjusting bolt has the characteristics of anti-loosening and compensating for axial preload. It can automatically adapt to changes in preload caused by material deformation, temperature changes and other factors during long-term use, always maintaining the tightness of the connection and ensuring the reliability and durability of the entire steel support connection system.

[0028] 3. Excellent adaptability and adjustability: The design of the slots and clamps for the hanging components allows it to adapt to steel walers of different specifications and shapes, making it widely applicable and convenient for quick and easy installation and adjustment. This reduces construction difficulties caused by material differences and improves construction efficiency. The slider in the clamp can slide vertically in the keyhole, and the height of the clamp can be flexibly adjusted according to actual installation requirements, facilitating precise installation and positioning of the steel support under different working conditions.

[0029] 4. The use of turnbuckles further enhances the adjustability of the entire mechanism. By adjusting the tension of the turnbuckles, the stress state of the steel support can be fine-tuned according to the actual engineering situation, so that it can better adapt to various complex stress changes during the foundation pit support process and optimize the mechanical performance of the entire foundation pit support structure. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of an embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram of the overall structure of the present invention;

[0032] Figure 3 This is a partial side view diagram of the present invention;

[0033] Figure 4 This is a side view of the overall structure of the present invention;

[0034] Figure 5 This is an exploded view of the clamp structure of the present invention;

[0035] In the picture:

[0036] 01. Sheet piles; 02. Waler; 03. Steel supports;

[0037] 1. Hanging component; 11. Fixing plate; 111. Key hole; 112. Snap-fit ​​component; 12. Support plate; 121. Limiting hole; 13. Connecting bracket;

[0038] 2. Clamp; 21. Adjusting bolt; 211. Spring; 22. Elastic washer; 23. Slider; 24. Pressure plate;

[0039] 3. Suspension components; 31. Steel strand cables; 32. Anchorages;

[0040] 4. Fixing welded components;

[0041] 5. Turnbuckles. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] Please see Figure 1-5 This invention discloses a steel-supported fall protection safety mechanism, comprising:

[0044] The hanging component 1 is provided in two sets. Each hanging component 1 includes a fixing plate 11, a supporting plate 12, and a connecting bracket 13. The supporting plate 12 is vertically arranged on the fixing plate 11. The connecting bracket 13 is used to connect the fixing plate 11 and the supporting plate 12. The fixing plate 11 is provided with a key-shaped hole 111 and a snap-fit ​​component 112.

[0045] The clamp 2 is disposed on the hanging member 1 through the key hole 111, and the hanging member 1 is fixed to the waler 02 by the clamp 2 and the snap fastener 112;

[0046] The suspension component 3 includes a steel strand cable 31 and an anchor 32. The support plate 12 has a limiting hole 121. The steel strand cable 31 is fixed in the limiting hole 121 on the support plate 12 through the anchor 32. The steel strand cable 31 is used to support the steel support 03.

[0047] Fixed welding component 4, which is fixed to the steel sheet pile 01;

[0048] Turnbuckle 5, with connecting hooks at both ends, connects the fixed weldment 4 and the hanging component 1 via the connecting hooks.

[0049] Furthermore, the support plate 12 has multiple sets of limiting holes 121, which are equidistantly distributed.

[0050] The keyway 111 is elongated.

[0051] In this embodiment, the hanging component 1 is hung and fixed on the waler 02. The hanging component 1 is welded from mutually perpendicular steel plates, and a connecting bracket 13 is welded between the steel plates to improve the overall load-bearing capacity. The steel plates are provided with key-shaped holes 11 and limiting holes 12 at specified positions according to their functions. The key-shaped holes 11 provide installation space for the clamp 2, and the limiting holes 12 are arranged in a specified number at a design distance to facilitate the installation of the suspension component 3.

[0052] Furthermore, the clamp 2 includes an adjusting bolt 21, an elastic washer 22, a slider 23, and a pressure plate 24. The slider 23 slides vertically within the keyway 111 to adjust the position of the clamp 2.

[0053] The slider 23 is provided with a threaded hole 231, which is adapted to the thread of the adjusting bolt 21;

[0054] The clamping plate 24 has a through hole, the elastic washer 22 is located between the slider 23 and the clamping plate 24, and the adjusting bolt 21 passes through the clamping plate 24, the elastic washer 22 and the slider 23. The adjusting bolt 21 cooperates with the slider 23 to fix the position of the clamp 2.

[0055] It should be further noted that the snap-fit ​​component 112 is located at the bottom of the side facing the waler 02, and the snap-fit ​​component 112 is provided with a snap-fit ​​groove that is compatible with the waler 02.

[0056] In this embodiment, the snap-fit ​​member 112 and the clamp 2 cooperate to fix the hanging member 1, improve the stability of the connection, and avoid the easy failure that would occur if the clamp 2 were used alone.

[0057] It should be further noted that the adjusting bolt 21 is fitted with a spring 211 that abuts against the pressure plate 24, and the spring 211 is used to provide axial preload.

[0058] Specifically, on the steel sheet pile 01 welded to the fixed weldment 4, one end of the turnbuckle 5 is connected to the fixed weldment 4 by a steel wire rope, and the other end of the turnbuckle 5 is connected to the hanging member 1 by a steel wire rope passing through the key hole 111. The turnbuckle 5 is used to provide tension to the limiting hole 121. The turnbuckle 5 can be adjusted to play a tying role through the above structural arrangement.

[0059] In this embodiment, the suspension component 3 is composed of a steel strand cable 31 and an anchor 32. The steel strand cable 31 is suspended below the steel support 03, and its two ends pass through the limiting hole 121 and are anchored to the hanging component 1 by the anchor 32 to form a whole, so as to prevent the steel support 8 from falling or undergoing large vertical displacement, and improve the stability of the enclosure structure and the support structure.

[0060] Finally, it should be noted that the specific construction steps are as follows:

[0061] S1. Construction of the main structure of the foundation pit retaining structure: Complete the driving of steel sheet piles 01, the construction of walers 02, and the hoisting and positioning of steel supports 03 according to the design requirements.

[0062] S2. Installation of the hanging component: Adjust the adjusting bolt 21 of the clamp 2 to make the clamp 2 in a relaxed and raised state, fit the vertical steel plate of the hanging component 1 with the waler 02, and then make the slot 13 at the bottom of the hanging component 1 engage with the bottom of the waler 02. Lower the clamp 2 and tighten the adjusting bolt 21 to complete the installation of the hanging component 1.

[0063] S3. Installation of suspension components: Prepare steel strand 31 of appropriate length, pass both ends of steel strand 31 through the limiting holes 11 opened in the hanging component 1, and reserve sufficient anchoring distance. Anchor the steel strand cable 31 to the hanging component 1 through the anchor 32 so that the two form a whole.

[0064] S4. Turnbuckle installation: Weld the fixing weldment 4 to the corresponding position on the surface of the steel sheet pile 01 according to the position of the steel support 03 and the hanging component 1. Prepare two steel wire ropes of appropriate length. Tie one steel wire rope to the fixing weldment 4 and connect it to the turnbuckle 5. Pass the other steel wire rope through the key hole 11 and tie it to the hanging component 1 and connect it to the turnbuckle 5. Adjust the turnbuckle 5 to generate tension and play a tying role.

[0065] S5. Quality Inspection: Conduct quality inspections on all structures of the completed fall arrest mechanism, including visual inspection of the connection parts, dimensional measurement, and mechanical performance testing, to ensure that the connection quality meets the design requirements.

[0066] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0067] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0068] Additionally, "multiple" refers to two or more.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A steel-supported fall-prevention safety mechanism, characterized in that, include: The number of the hanging components (1) is two sets. The hanging components (1) include a fixed plate (11), a support plate (12) and a connecting bracket (13). The support plate (12) is vertically arranged on the fixed plate (11). The connecting bracket (13) is used to connect the fixed plate (11) and the support plate (12). The fixed plate (11) is provided with a key hole (111) and a snap-fit ​​component (112). The clamp (2) is set on the hanging member (1) through the key hole (111), and the hanging member (1) is fixed to the waler (02) by the clamp (2) and the snap-fit ​​member (112); The suspension component (3) includes a steel strand cable (31) and an anchor (32). A limiting hole (121) is provided on the support plate (12). The steel strand cable (31) is fixed in the limiting hole (121) on the support plate (12) by the anchor (32). The steel strand cable (31) is used to support the steel support (03). Fixed weldment (4), which is fixed to the steel sheet pile (01); Turnbuckle (5), with connecting hooks at both ends, the turnbuckle (5) connects the fixed weldment (4) and the hanging component (1) through the connecting hooks. The support plate (12) has multiple sets of limiting holes (121) which are equidistantly distributed. The keyway (111) is elongated; The clamp (2) includes an adjusting bolt (21), an elastic washer (22), a slider (23) and a pressure plate (24). The slider (23) slides vertically within the keyhole (111) to adjust the position of the clamp (2). The slider (23) is provided with a threaded hole (231), which is adapted to the thread of the adjusting bolt (21); The clamping plate (24) is provided with a through hole. The elastic washer (22) is located between the slider (23) and the clamping plate (24). The adjusting bolt (21) passes through the clamping plate (24), the elastic washer (22) and the slider (23). The adjusting bolt (21) cooperates with the slider (23) to fix the position of the clamp (2). The snap-fit ​​member (112) is located at the bottom of the side facing the waler (02), and the snap-fit ​​member (112) is provided with a snap-fit ​​groove that is compatible with the waler (02).

2. The steel-supported fall arrest safety mechanism according to claim 1, characterized in that: The adjusting bolt (21) is fitted with a spring (211) that abuts against the pressure plate (24), the spring (211) being used to provide axial preload.

3. The steel-supported fall arrest safety mechanism according to claim 1, characterized in that: The fixed weldment (4) is welded to the sheet pile (01). One end of the turnbuckle (5) is connected to the fixed weldment (4) by a wire rope. The other end of the turnbuckle (5) is connected to the hanging member (1) by a wire rope passing through the key hole (111). The turnbuckle (5) is used to provide tension to the key hole (111).

4. The construction method of the steel-supported fall arrest safety mechanism according to any one of claims 1-3, characterized in that, Includes the following steps: S1. Construction of the main structure of the foundation pit retaining structure: Complete the construction of steel sheet piles (01), walers (02) and steel supports (03) according to the design requirements. S2. Installation of the hanging component: Adjust the adjusting bolt (21) of the clamp (2) to make the clamp (2) in a relaxed and raised state, fit the vertical steel plate of the hanging component (1) with the waler (02), and then make the slot at the bottom of the hanging component (1) engage with the bottom of the waler (02), lower the clamp (2) and tighten the adjusting bolt (21) to complete the installation of the hanging component (1); S3. Installation of suspension components: Prepare steel strand cable (31) of appropriate length, pass both ends of steel strand cable (31) through the limiting holes (121) opened in the hanging component (1) respectively, and reserve sufficient anchoring distance. Anchor the steel strand cable (31) to the hanging component (1) through the anchor (32) so that the two form a whole. S4. Installation of turnbuckles: Weld the fixed weldment (4) to the corresponding position on the surface of the steel sheet pile (01) according to the position of the steel support (03) and the hanging component (1). Prepare two steel wire ropes of appropriate length. Tie one steel wire rope to the fixed weldment (4) and connect it to the turnbuckle (5). Pass the other steel wire rope through the key hole (111) and tie it to the hanging component (1) and connect it to the turnbuckle (5). Adjust the turnbuckle (5) to generate tension and play a tying role. S5. Quality Inspection: Conduct quality inspections on all structures of the completed fall arrest mechanism, including visual inspection, dimensional measurement, and mechanical performance testing of the connection parts, to ensure that the connection quality meets the design requirements.

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