An isolation fence for edge protection of deep foundation pits

Abstract

This application relates to an isolation fence for edge protection of deep foundation pits, comprising a foundation support, protective interception, adjustable connection, and intelligent safety monitoring components. In the foundation support component, the bottom end of a vertical pipe is connected to a fixed base plate, and expansion bolts penetrate the base plate to fix it to the concrete structure. The protective interception component achieves isolation through horizontal pipes and a dense mesh panel. The adjustable connection component, using height-adjusting sleeves, telescopic crossbars, and swivel joints, allows for adjustment of the fence's height, length, and angle, adapting to different excavation depths and complex pit terrain, avoiding blind spots. The intelligent safety monitoring component monitors the fence's status in real time and provides early warnings. This fence offers strong protective performance, can withstand significant horizontal impact, and can be quickly assembled and disassembled without tools, making it suitable for scenarios with tight schedules or requiring frequent adjustments to the protection range. It significantly reduces construction costs, manpower, and working hours, and is applicable to edge protection of various deep foundation pits.

Description

Technical Field

[0001] This application relates to the field of tunnel construction technology, and in particular to an isolation guardrail for edge protection of deep foundation pits. Background Technology

[0002] To effectively alleviate the increasing pressure on urban traffic networks, the application of underpass tunnels in urban areas is becoming more and more widespread. Deep foundation pit construction is a key link in projects such as open-cut tunnels and high-rise building foundation construction, and its edge protection is directly related to the safety of construction personnel and the stability of the surrounding environment.

[0003] Currently, the widely used perimeter protection railings for foundation pits in the industry mostly adopt a basic structure of steel pipes and wire mesh connected by expansion bolts, forming a frame through fasteners, and the surface is painted with warning paint to achieve basic protection. However, the length and height of the steel pipes in existing railings are mostly fixed dimensions. When facing the protection requirements of irregular edges of foundation pits, such as corners and curved slopes, it is necessary to cut the steel pipes on-site to adjust the length, or to customize special-shaped parts. This not only increases construction costs and time, but also results in low standardization of the railings, making them difficult to reuse. At the same time, traditional fastener connections can only achieve fixed-angle assembly, and cannot flexibly adjust the tilt angle of the horizontal railing according to the slope of the foundation pit, which can easily lead to blind spots or problems with the railing not fitting tightly to the slope. Furthermore, the steel pipe connection of traditional railings relies on bolt fasteners, which require the use of wrenches to tighten each bolt individually during installation and to loosen each bolt individually during disassembly. The operation is cumbersome and difficult for a single person to complete. Utility Model Content

[0004] To address or partially address the problems existing in related technologies, this application provides an isolation guardrail for the edge protection of deep foundation pits. Based on an adjustable combination structure, the guardrail can be adapted and adjusted in multiple dimensions, and the quick-assembly and disassembly components allow a single person to quickly assemble and disassemble the guardrail.

[0005] This application provides an isolation guardrail for edge protection of deep foundation pits, comprising: The basic support components include a vertical pipe, a fixed base plate, and expansion bolts. The bottom end of the vertical pipe is fixedly connected to the fixed base plate, and the expansion bolts penetrate the fixed base plate to fix the vertical pipe to the concrete structure around the deep foundation pit. The protective interception component includes horizontal pipes and encrypted mesh panels, with the encrypted mesh panels connected to the vertical and horizontal pipes; The adjustable connection assembly includes a height adjustment sleeve, a telescopic crossbar, and a rotary joint. The height adjustment sleeve is fitted inside the vertical tube, the telescopic crossbar forms a horizontal tube and its length is adjustable, and the rotary joint connects the horizontal tube and the vertical tube and realizes angle adjustment. Intelligent safety monitoring components are used to monitor the status of guardrails in real time and issue early warnings.

[0006] The intelligent safety monitoring components include a tilt sensor, a vibration sensor, a wireless transmission module, an audible and visual alarm, a solar panel, and a lithium battery. The tilt sensor is installed at the top of the vertical tube, the vibration sensor is installed at the bottom of the vertical tube, the wireless transmission module is integrated inside the tilt sensor's housing, and the audible and visual alarm is installed on the horizontal tube and electrically connected to the wireless transmission module via a wire.

[0007] The solar panel is mounted on the top of the vertical tube via a bracket and connected to a lithium battery. The lithium battery stores the electrical energy generated by the solar panel and supplies power to various electrical components.

[0008] It also includes quick-release components, which include quick-release buckles and snap-on straps. The quick-release buckles are used to connect the horizontal tubes and the vertical tubes, and the snap-on straps are used to fix the encrypted mesh.

[0009] The vertical tube includes a fixed section and an adjustable section. The top of the fixed section is nested inside a height adjusting sleeve, and the bottom of the adjustable section is inserted into the height adjusting sleeve. The side wall of the adjustable section is provided with positioning holes at intervals, and the side wall of the height adjusting sleeve is provided with corresponding through holes. Bolts pass through the through holes and positioning holes to achieve height adjustment.

[0010] The rotary joint includes a fixed seat and a rotating seat. The fixed seat is a circular flange with its lower surface welded to the end face of the telescopic crossbar and its upper surface having an annular toothed groove. The lower surface of the rotating seat has an annular protrusion that meshes with the annular toothed groove, and its upper surface is connected to a quick-release latch. The side wall of the rotating seat has fastening bolts for locking after angle adjustment. The technical solution provided in this application can include the following beneficial effects: This application provides an isolation guardrail for edge protection of deep foundation pits. It offers multi-dimensional adaptability to accommodate the protection needs of foundation pits at different excavation depths and for straight or irregular lengths. It precisely conforms to complex terrain such as pit corners and slopes, avoiding blind spots and significantly reducing construction costs and customization requirements. The guardrail's safety performance is comprehensively enhanced, capable of withstanding significant horizontal impacts, and its risk control capabilities are significantly improved. During use, the horizontal and vertical pipes can be quickly locked and unlocked without tools, greatly improving assembly and disassembly efficiency. It is particularly suitable for scenarios with tight construction schedules or where frequent adjustments to the protection range are required, significantly reducing labor costs and construction time. It can be widely applied to various edge protection scenarios, including deep foundation pits in open-cut tunnels, foundation pits in high-rise buildings, and municipal engineering foundation pits, covering the vast majority of foundation pit construction needs.

[0011] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0012] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0013] Figure 1 This is a schematic front view of the structure of the isolation guardrail shown in the embodiment of this application; Figure 2 This is a left view schematic diagram of the structure of the isolation guardrail shown in the embodiment of this application; Figure label: 1-Vertical pipe, 2-Fixed base plate, 3-Expansion bolt, 4-Horizontal pipe, 5-Dense mesh, 6-Mesh fence. Detailed Implementation

[0014] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this application more thorough and complete, and to fully convey the scope of this application to those skilled in the art.

[0015] It should be understood that although the terms "first," "second," "third," etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0016] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not 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.

[0017] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0018] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0019] like Figure 1 , Figure 2 The illustrated isolation railing for deep foundation pit edge protection includes a base support assembly, a protective interception assembly, an anti-climbing reinforcement assembly, an adjustable connection assembly, and a quick-assembly assembly. The base support assembly includes a vertical tube 1, a fixed base plate 2, and expansion bolts 3. The vertical tube 1 is divided into a fixed section and an adjustable section. A height-adjusting sleeve, also a hollow tube, is nested inside the top of the fixed section. Its inner wall is welded to the outer wall of the fixed section. The bottom end of the adjustable section is inserted into the height-adjusting sleeve. Positioning holes are evenly spaced along the length of the side wall of the adjustable section. Through holes of the same diameter are formed on the side wall of the height-adjusting sleeve corresponding to the positioning holes. Through bolts pass sequentially through the through holes and positioning holes to lock the adjustable section and the fixed section, thereby enabling flexible adjustment of the overall height of the vertical tube 1 to adapt to the protection height requirements of foundation pits of different depths. The bottom end of the vertical pipe 1 is fixed to the center of the upper surface of the fixed base plate 2 by full welding. The fixed base plate 2 is a square steel plate with multiple evenly distributed strong magnetic blocks embedded inside, which have sufficient attraction to achieve initial positioning. Bolt holes are opened at the four corners of the fixed base plate 2. After the expansion bolts 3 pass through the bolt holes, they are driven into the concrete structure around the deep foundation pit to firmly fix the vertical pipe 1 to the ground foundation.

[0020] Furthermore, to enhance the anti-tipping ability of the vertical pipe 1, a hinge shaft is used to connect one end of the foldable diagonal brace at the middle of the inner wall of each fixed section of the vertical pipe 1. The foldable diagonal brace is also made of seamless pipe, and its other end is welded to the upper surface of the movable steel plate. The specifications of the movable steel plate are the same as those of the fixed base plate 2, and bolt holes are also opened at the corners of the movable steel plate. It is fixed to the concrete structure by expansion bolts 3, forming a triangular stable structure with the vertical pipe 1, the ground and the foldable diagonal brace as the vertices, which greatly improves the overall anti-tipping performance.

[0021] An elastic buckle is welded to the inner wall of the fixed section of the vertical tube 1 near the hinge shaft. The elastic buckle is a U-shaped metal spring, and its opening size is adapted to the outer diameter of the foldable diagonal brace. When the foldable diagonal brace is in the folded storage state, it can be locked into the opening of the elastic buckle to prevent shaking or damage during transportation and storage. The horizontal tube 4 of the protective interception component adopts a telescopic crossbar structure, including a main crossbar and a secondary crossbar, both of which are hollow tubes. One end of the secondary crossbar is inserted into the interior of the main crossbar, and the outer wall of the secondary crossbar is engraved with scale markings along its length. The scale markings have sufficient precision to allow operators to accurately adjust the overall length of the telescopic crossbar to adapt to the protection length requirements of irregular edges of the foundation pit. Rotary joints are welded to both ends of the telescopic crossbar. The rotary joint consists of a fixed seat and a rotating seat. The fixed seat is a circular metal flange, and its lower surface is welded and fixed to the end face of the telescopic crossbar. The upper surface of the fixed seat has an annular toothed groove, and the lower surface of the rotating seat has an annular protrusion at the position corresponding to the annular toothed groove. The annular protrusion and the annular toothed groove mesh to ensure stability and angle controllability during rotation.

[0022] The upper surface of the rotating seat is welded to the fixed seat of the quick-release latch. The quick-release latch consists of a fixed seat, a movable claw, and a press-type spring pin. The fixed seat is a U-shaped metal seat, and its inner wall fits against the outer wall of the adjusting section of the vertical tube 1. One end of the movable claw is hinged to one side of the fixed seat through a pin, and the other end is locked to the other side of the fixed seat through a press-type spring pin. The press-type spring pin has a return spring inside. Pressing the pin will release the lock and open and close the movable claw. The quick-release latch can quickly connect the telescopic crossbar to the vertical tube 1. Compared with the traditional fastener connection method, the disassembly and assembly efficiency is significantly improved. After connection, the horizontal angle of the telescopic crossbar can be flexibly adjusted through the meshing of the annular tooth groove and the annular convex tooth, which can meet the protection requirements of complex terrains such as pit corners and slopes. After adjustment, the angle can be locked by tightening the fastening bolts on the side wall of the rotating seat to prevent rotation due to external forces during use. The encrypted mesh panel 5 of the protective interception component has a double-layer structure, consisting of an inner layer of wire mesh and an outer layer of shear-resistant steel wire mesh. The inner and outer wire meshes have the same overall specifications. The inner wire mesh is woven from low-carbon steel wire, providing basic interception functionality to prevent small debris from falling. The outer shear-resistant steel wire mesh is woven from high-manganese steel wire, possessing excellent shear and damage resistance, and can withstand damage caused by external impacts, thus improving the overall protection level. The inner and outer wire meshes are connected by mesh guardrails 6, with metal cylinders evenly distributed at the four corners and center of the mesh to ensure a fixed spacing between the two layers, preventing protection failure due to mesh adhesion.

[0023] The connection between the double-layer encrypted mesh 5 and the telescopic crossbar and vertical tube 1 is achieved by a snap-on binding strap. The snap-on binding strap is made of stainless steel. One end of it is fixed to the outer wall of the telescopic crossbar and vertical tube 1 by welding, and the other end is equipped with a press lock. After the edge of the double-layer encrypted mesh 5 is attached to the outer wall of the tube, the snap-on binding strap is wrapped around the mesh and the press lock is pressed to complete the fixation. No tools are needed for disassembly. The binding strap can be cut directly. When reusing, a new binding strap is replaced. This effectively avoids the problems of easy loosening and difficult disassembly of traditional wire binding.

[0024] Furthermore, inverted V-shaped anti-climb spikes are evenly welded along the length of the upper surface of the telescopic crossbar. These spikes are made of stainless steel, offering excellent corrosion resistance and structural strength. The tips of the spikes are passivated, effectively preventing unauthorized personnel from climbing while also avoiding accidental cuts to workers during operation. The bottom of the inverted V-shaped anti-climb spikes is welded to the upper surface of the telescopic crossbar, ensuring sufficient weld length to guarantee connection strength and prevent spikes from detaching due to external impact, further enhancing safety. During installation, the installation position and required height of the vertical pipe 1 are determined based on the actual excavation depth and edge terrain features of the deep foundation pit. The fixing base plate 2 is then attached to the designated position on the concrete structure. The initial positioning of the vertical pipe 1 is achieved using the attraction force of the strong magnetic blocks inside the base plate. At this stage, no manual support is required for the vertical pipe 1; a single person can complete the positioning operation, significantly improving construction efficiency. Subsequently, expansion bolts 3 are passed through the bolt holes of the fixing base plate 2, and an impact drill is used to drive the bolts into the concrete. After tightening, the foundation fixing of the vertical pipe 1 is completed. According to the actual protection height requirements, the depth of the height adjustment sleeve inserted into the adjustment section is adjusted, the positioning hole and through hole are aligned, the through bolt is inserted, and the nut is tightened to lock the overall height of the vertical pipe 1, ensuring that the height meets the foundation pit protection standards. Next, unfold the foldable diagonal brace and rotate it around the hinge axis to a suitable angle with the ground. Place the movable steel plate against the ground and secure it with expansion bolts 3 to complete the construction of the triangular stable structure. If disassembly and storage are required later, simply unscrew the expansion bolts 3, fold the diagonal brace, and insert it into the elastic buckle. This is convenient and does not take up much storage space. Adjust the nesting length of the main and auxiliary crossbars of the telescopic crossbar according to the actual length of the pit edge. After determining the required length by referring to the scale markings, weld the fixing seat of the swivel joint to the telescopic crossbar, and then weld the fixing seat of the quick-release lock to the swivel seat. Align the swivel with the outer wall of the adjusting section of the vertical tube 1, close the movable claw, and press the spring pin to lock it in place. If the angle of the horizontal tube 4 needs to be adjusted to suit the pit corner or slope terrain, loosen the fastening bolts, rotate the swivel seat to the required angle, and then tighten the bolts to lock it, ensuring that the horizontal tube 4 fits tightly against the pit edge without any blind spots. Next, the double-layer encrypted mesh 5 is fixed. The inner wire mesh and the outer anti-shear steel wire mesh are assembled into a whole by using spacer posts. Ensure that the spacer posts are evenly distributed and firmly fixed. Then, the assembled double-layer encrypted mesh 5 is attached to the frame composed of the vertical pipe 1 and the telescopic crossbar. Use buckle-type binding straps to wrap around the edge of the mesh and the pipe, and press the lock to complete the fixation. During the fixation process, it is necessary to ensure that the mesh is not loose or wrinkled, so as to avoid affecting the protective effect due to the looseness of the mesh.

[0025] Finally, it should be noted that in this document, relationships such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "include," "contain," or any other variations are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0026] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0027] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0028] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application.

[0029] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A protective barrier for edge protection of deep foundation pits, characterized in that, include: The basic support assembly includes a vertical pipe, a fixed base plate, and expansion bolts. The bottom end of the vertical pipe is fixedly connected to the fixed base plate, and the expansion bolts pass through the fixed base plate to fix the vertical pipe to the concrete structure around the deep foundation pit. The protective interception component includes a horizontal tube and a encrypted mesh, wherein the encrypted mesh is connected to the vertical tube and the horizontal tube; An adjustable connection assembly includes a height adjusting sleeve, a telescopic crossbar, and a rotary joint. The height adjusting sleeve is fitted inside the vertical tube, the telescopic crossbar forms a horizontal tube and its length is adjustable, and the rotary joint connects the horizontal tube and the vertical tube to achieve angle adjustment. Intelligent safety monitoring components are used to monitor the status of guardrails in real time and issue early warnings.

2. The isolation guardrail for edge protection of deep foundation pits according to claim 1, characterized in that, The intelligent safety monitoring component includes a tilt sensor, a vibration sensor, a wireless transmission module, an audible and visual alarm, a solar panel, and a lithium battery. The tilt sensor is installed at the top of the vertical tube, the vibration sensor is installed at the bottom of the vertical tube, the wireless transmission module is integrated inside the housing of the tilt sensor, and the audible and visual alarm is installed on the horizontal tube and electrically connected to the wireless transmission module via a wire.

3. The isolation guardrail for edge protection of deep foundation pits according to claim 2, characterized in that, The solar panel is mounted on the top of the vertical tube via a bracket and connected to the lithium battery. The lithium battery is used to store the electrical energy generated by the solar panel and to power various electrical components.

4. The isolation guardrail for edge protection of deep foundation pits according to claim 1, characterized in that, It also includes a quick-release assembly, which includes a quick-release buckle and a snap-on cable tie. The quick-release buckle is used to connect the horizontal tube and the vertical tube, and the snap-on cable tie is used to fix the encrypted mesh.

5. The isolation guardrail for edge protection of deep foundation pits according to claim 1, characterized in that, The vertical tube includes a fixed section and an adjustable section. The height adjusting sleeve is nested inside the top of the fixed section. The bottom of the adjustable section is inserted into the height adjusting sleeve. Positioning holes are spaced apart on the side wall of the adjustable section. Through holes are correspondingly opened on the side wall of the height adjusting sleeve. Bolts pass through the through holes and the positioning holes to achieve height adjustment.

6. The isolation guardrail for edge protection of deep foundation pits according to claim 4, characterized in that, The rotary joint includes a fixed seat and a rotating seat. The fixed seat is a circular flange with its lower surface welded to the end face of the telescopic crossbar and its upper surface having an annular toothed groove. The lower surface of the rotating seat has an annular protrusion that meshes with the annular toothed groove, and its upper surface is connected to the quick-release latch. The side wall of the rotating seat is provided with fastening bolts for locking after angle adjustment.

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