Modularized prestress-adjustable steel pipe anti-falling diagonal bracing device and using method thereof

Abstract

The invention discloses a modularized prestress-adjustable steel pipe anti-falling diagonal bracing device and a using method thereof. Comprising a plurality of steel pipes with different lengths, and the steel pipes are square hollow pipes; the steel wedges are arranged between the adjacent steel pipes; the flange bolt is fixedly mounted on the steel pipe; every two adjacent flange bolts are fixedly connected. A first bolt is arranged on the flange bolt; the whole structure is decomposed into standardized and interchangeable independent units, a main body supporting steel pipe is divided into different standard length sections, and different working condition requirements are met through flexible combination; due to the adjustable design of prestress and stable assembly matching, potential safety hazards in the construction process are reduced, and the safety of constructors is guaranteed; the device is high in turnover rate and can be repeatedly used, and the construction cost is reduced.

Description

Technical Field

[0001] The invention relates to a modular prestressed adjustable steel pipe anti-falling bracing device and a use method thereof, belonging to the field of building workpieces. Background Art

[0002] In modern deep foundation pits and underground projects, temporary support systems, as core structures for ensuring construction safety, are widely used in scenarios such as high-rise buildings, subway tunnels, and bridge foundations. Particularly in complex geological conditions (such as soft soil and high-water sand layers) or within confined spaces in densely populated urban areas, traditional support systems often suffer from insufficient rigidity, poor adjustability, and low safety redundancy, leading to excessive deformation, instability, and even collapse of the support structure, seriously threatening project safety and progress.

[0003] At present, the steel pipe bracing devices commonly used in engineering projects mostly rely on the welding and assembly of fixed-length components, which has significant defects. Faced with soil stress redistribution caused by dynamic excavation or sudden loads (such as mechanical collisions and blasting vibrations), fixed supports cannot adjust the length and prestress in real time, which can easily lead to support detachment or stress concentration. Frequent disassembly and assembly are required, which is inefficient and costly. Once local rods of traditional supports fail (such as weld cracking and pipe buckling), the lack of anti-fall blocking mechanism may trigger a chain collapse.

[0004] While some recent studies have attempted to introduce hydraulic expansion or bolt adjustment technologies, these technologies still face challenges such as low modularity, insufficient prestress control precision, and incomplete anti-fall mechanisms. Therefore, a new support device combining modular rapid deployment and dynamic prestress compensation is needed to address the support challenges of complex working conditions and promote the efficient upgrading of temporary projects. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention aims to provide a modular prestressed adjustable steel pipe anti-falling bracing device and a method of using the same to solve the problem.

[0006] In order to achieve the above object, the present invention is implemented through the following technical solution: a modular prestressed adjustable steel pipe anti-falling support device, comprising: A plurality of steel pipes of different lengths, wherein the steel pipes are square hollow pipes; Steel wedges, disposed between adjacent steel pipes; A flange bolt is fixedly mounted on the steel pipe; two adjacent flange bolts are fixedly connected; and a first bolt is provided on the flange bolt; Both ends of the steel pipe are provided with long slots; the first bolt is fixedly connected to the steel wedge through the long slots; The steel wedge is a square solid tube and has slots reserved on all four sides; the first bolt fits tightly into the slots.

[0007] Preferably, adjacent flange bolts are connected by second bolts.

[0008] Preferably, the middle portion of the flange bolt is a square through hole for the steel pipe to be inserted into.

[0009] Preferably, the side length of the steel wedge is smaller than the hollow side length of the steel pipe, and a gap of at least 1CM is reserved.

[0010] Preferably, an adhesive layer is adhered to the slot; and the first bolt is in close contact with the adhesive layer.

[0011] Preferably, a plurality of third bolts are installed on the long slot; and the third bolts fit tightly with the slot.

[0012] A method for using a modular prestressed adjustable steel pipe anti-falling bracing device comprises the following steps: Step 1: Select several steel pipes of appropriate length according to the design drawings, and fix a hook on one of the steel pipes so as to buckle the steel purlin inward through the hook to increase the contact area with the steel purlin flange; Step 2: The adjacent steel pipes are fixed in series through the flange bolts; this is specifically achieved by the following steps: S21: inserting the steel pipe along the through hole so that the four long grooves correspond to the four first bolts; S22: inserting the steel wedge into the steel pipe; S23: rotating any one of the first bolts so that the first bolt presses against the slot on the steel wedge; S24: Repeat S21 to install another flange bolt; then connect two adjacent flange bolts using the second bolt to connect the two adjacent steel pipes; S25: rotating the other first bolts so that each of the first bolts presses against the first bolt; Step 3: Adjust each of the first bolts so that the depth of each of the first bolts inserted into the steel pipe is consistent; Step 4: Install the third bolt on part of the long groove according to the design requirements of the drawing.

[0013] Preferably, the first bolt is located on a side of the long slot adjacent to the steel pipe.

[0014] Preferably, the third bolt is located on a side of the long slot away from the steel pipe.

[0015] Beneficial effects The present invention decomposes the overall structure into standardized, interchangeable independent units, and divides the main supporting steel pipe into segments of different standard lengths, which can be flexibly combined to adapt to different working conditions. The prestressed adjustable design and stable component coordination reduce safety hazards during construction and ensure the safety of construction workers. The device has a high turnover rate and is reusable, which reduces construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other features, objects and advantages of the present invention will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings: Figure 1 This is a structural schematic diagram of a modular prestressed adjustable steel pipe anti-falling bracing device of the present invention; Figure 2 It is a schematic cross-sectional structural diagram of the present invention; Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention from a side view; Figure 4 Schematic diagram of the stress structure of the steel pipe according to Example 1 of the present invention; Figure 5 Schematic diagram of the steel pipe deflection structure of Example 1 of the present invention; Figure 6 This is a schematic diagram of the stress structure of a steel pipe according to Example 2 of the present invention; Figure 7 This is a schematic diagram of the stress structure of a steel pipe according to Example 3 of the present invention; Figure 8 This is a schematic diagram of the steel pipe deflection structure of Example 3 of the present invention. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0018] See also Figure 1-Figure 3 The present invention provides a modular prestressed adjustable steel pipe anti-falling support device technical solution: including: The steel pipes 1 are a number of square hollow pipes of varying lengths, serving as the main support structure of the device. The modular design allows the lengths of the steel pipes 1 to be flexibly combined according to actual needs, adapting to different construction scenarios and improving construction efficiency.

[0019] The steel wedge 5 is arranged between adjacent steel pipes 1. It is a square solid pipe with long grooves 51 reserved on all four sides. The design of the long groove 51 of the steel wedge 5 allows it to fit tightly with the first bolt 3, improving the stability and safety of the device. At the same time, the solid design of the steel wedge 5 enhances its compressive strength, further ensuring construction safety. The gap reserved between the steel wedge 5 and the steel pipe 1 allows the steel pipe 1 to have a certain amount of sliding and deflection space when subjected to force, thereby reducing deformation or tensile stress caused by subsequent loads. An adhesive layer 52 is adhered to the long groove 51; the adhesive layer 52 is used to greatly secure the first bolt 3 and the long groove 51.

[0020] Flange bolts 2 are fixedly mounted on steel pipes 1 to connect adjacent steel pipes 1 and are equipped with first bolts 3 to secure steel wedges 5. The standardized design of flange bolts 2 facilitates assembly and disassembly, improving construction efficiency. Furthermore, the combination of flange bolts 2 and steel pipes 1 allows for adjustable prestressing to meet diverse support requirements.

[0021] Long slots 11 are formed at both ends of the steel tube 1. Long slots 11 are formed on all four sides of the steel tube 1, allowing the first bolt 3 to pass through and secure the steel wedge 5. The design of long slots 11 allows for flexible adjustment of the position of the first bolt 3 or the third bolt 7, achieving precise control of the prestress and improving the stability and adaptability of the device.

[0022] The third bolt 7, installed in a portion of the long slot 11, further reinforces the device. The installation of the third bolt 7 further enhances the stability of the device, especially in applications requiring heavy loads, and improves construction safety. In particular, the installation position of the third bolt 7 determines the prestressing force between two adjacent steel pipes 1.

[0023] Example 1 See Figure 2 、 4 5. A method for using a modular prestressed adjustable steel pipe 1 anti-fall support device, comprising the following steps: Step 1: Select several steel pipes 1 of appropriate length according to the design drawings, and fix a hook 6 on one of the steel pipes 1 so that the hook 6 can be buckled into the steel purlin (not shown in the figure) to increase the contact area with the steel purlin flange; in this embodiment, hardware parts are used to pass through the long slot 11 to fix the hook 6 on the steel pipe 1.

[0024] Step 2: The adjacent steel pipes 1 are fixed in series through the flange bolts 2; this is specifically achieved by the following steps: S21: inserting the steel pipe 1 along the through hole so that the four long slots 11 correspond to the four first bolts 3; S22: inserting the steel wedge 5 into the steel pipe 1; S23: Rotate any one of the first bolts 3 so that the first bolt 3 presses against the long groove 51 on the steel wedge 5; S24: Repeat S21 to install another flange bolt 2; then connect two adjacent flange bolts 2 using the second bolt 4 to connect two adjacent steel pipes 1; S25: rotating the other first bolts 3 so that each of the first bolts 3 presses against the first bolt 3; Step 3: Adjust each of the first bolts 3 so that the depth of each of the first bolts 3 inserted into the steel pipe 1 is consistent; The first bolt 3 is located on a side of the long slot 11 adjacent to the steel pipe 1 .

[0025] So, see Figure 4 When one of the steel pipes 1 feels pressure, the steel pipe 1 can slide appropriately to offset or reduce the deformation or tensile stress caused by subsequent loads.

[0026] See Figure 5 Due to the design of the long slots 11 and the first bolts 3, the steel pipe 1 can deflect to a certain extent. When the pressure on one of the steel pipes 1 causes it to slip, a gap is created between the first bolts 3, originally located near the edge of the steel pipe 1, and the long slots 11, allowing the steel pipe 1 to deflect to a certain extent. Furthermore, the built-in steel wedges 5 limit the deflecting steel pipe 1, preventing it from deflecting too much.

[0027] Example 2 See Figure 6 Unlike Example 1, a third bolt 7 is installed on the side of the long slot 11 away from the steel pipe 1. The third bolt 7 is closely attached to the edge of the long slot 11. The third bolt 7 connects the steel pipe 1 to the steel wedge 5, which in turn connects the steel wedge 5 to the flange bolt 2, thereby securing two adjacent steel pipes 1. In this way, when a force is applied to the steel pipe 1, the friction force of the third bolt 7 on the long slot 51 offsets the pressure.

[0028] Example 3 See Figure 7 , which is different from Example 2, is that there is a gap between the third bolt 7 and the edge of the long slot 11; so that when the steel pipe 1 is subjected to force, it can slide in a limited manner, see Figure 8 , and can be deflected to a certain extent.

[0029] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all points of view, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and range of equivalents of the claims are included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate. In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A modular prestressed adjustable steel pipe anti-falling bracing device, characterized by: include: A plurality of steel pipes of different lengths, wherein the steel pipes are square hollow pipes; Steel wedges, disposed between adjacent steel pipes; A flange bolt is fixedly mounted on the steel pipe; two adjacent flange bolts are fixedly connected; and a first bolt is provided on the flange bolt; Both ends of the steel pipe are provided with long slots; the first bolt is fixedly connected to the steel wedge through the long slots; The steel wedge is a square solid tube and has slots reserved on all four sides; the first bolt fits tightly into the slots.

2. A modular prestressed adjustable steel pipe anti-falling bracing device according to claim 1, characterized in that: Adjacent flange bolts are connected by second bolts.

3. The modular prestressed adjustable steel pipe anti-falling bracing device according to claim 1 is characterized in that: The middle part of the flange bolt is a square through hole for the steel pipe to be inserted into.

4. The modular prestressed adjustable steel pipe anti-falling bracing device according to claim 1 is characterized in that: The side length of the steel wedge is smaller than the hollow side length of the steel pipe, and a gap of at least 1CM is reserved.

5. The modular prestressed adjustable steel pipe anti-falling bracing device according to claim 1 is characterized in that: An adhesive layer is adhered to the slot; and the first bolt is in close contact with the adhesive layer.

6. The modular prestressed adjustable steel pipe anti-falling bracing device according to claim 1, characterized in that: A plurality of third bolts are installed on the long slot; the third bolts are tightly fitted with the clamping slot.

7. A method for using a modular prestressed adjustable steel pipe anti-falling bracing device, using the modular prestressed adjustable steel pipe anti-falling bracing device according to claims 1-6, characterized in that: The following steps are involved: Step 1: Select several steel pipes of appropriate length according to the design drawings, and fix a hook on one of the steel pipes so as to buckle the steel purlin inward through the hook to increase the contact area with the steel purlin flange; Step 2: The adjacent steel pipes are fixed in series through the flange bolts; this is specifically achieved by the following steps: S21: inserting the steel pipe along the through hole so that the four long grooves correspond to the four first bolts; S22: inserting the steel wedge into the steel pipe; S23: rotating any one of the first bolts so that the first bolt presses against the slot on the steel wedge; S24: Repeat S21 to install another flange bolt; then connect two adjacent flange bolts using the second bolt to connect the two adjacent steel pipes; S25: rotating the other first bolts so that each of the first bolts presses against the first bolt; Step 3: Adjust each of the first bolts so that the depth of each of the first bolts inserted into the steel pipe is consistent; Step 4: Install the third bolt on part of the long groove according to the design requirements of the drawing.

8. The method for using the modular prestressed adjustable steel pipe anti-falling bracing device according to claim 7, characterized in that: The first bolt is located on a side of the long slot adjacent to the steel pipe.

9. The method for using the modular prestressed adjustable steel pipe anti-falling bracing device according to claim 1 is characterized in that: The third bolt is located on a side of the long slot away from the steel pipe.

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