Assembly type protective fence device for intercity railway foundation pit
Patent Information
- Application Number
- CN202522269561.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-27
- Publication Date
- 2026-10-20
- Estimated Expiration
- 2035-10-27
Smart Images
Figure CN224871023U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of safety protection technology for intercity railway foundation pit construction, and in particular to a prefabricated protective railing device for intercity railway foundation pits. Background Technology
[0002] With the increasing demand for safety protection during railway foundation pit construction, foundation pit guardrails, as key safety facilities on construction sites, have become an important direction for the industry's technological development in terms of structural stability, assembly efficiency, and adaptability.
[0003] Traditional protection solutions often employ fixed welded structures or temporary, simple barriers, which have numerous technical drawbacks. While commonly available pit safety railings improve foundation rigidity through steel structure welding or bolted connections, they still face significant challenges in practical applications.
[0004] First, welding is not only inefficient for disassembly but also severely impacts the reusability of components, while requiring significant time for welding operations on-site. Second, the connection between the protective netting and the supporting structure typically uses simple binding or clip-on methods, which are highly susceptible to loosening and detachment under external impact or uneven foundation settlement, posing serious safety hazards. Third, the assembly precision of the base and columns relies entirely on manual on-site adjustments, making it difficult to guarantee consistent installation quality. More importantly, traditional guardrail structures are ill-suited to the complex and varied terrain of intercity railway foundation pits, failing to adapt quickly or meet the practical needs of project reuse, resulting in persistently high safety risks and continuously increasing maintenance costs. Utility Model Content
[0005] The main purpose of this utility model is to propose a prefabricated guardrail device for intercity railway foundation pits, which aims to solve the problems of low assembly efficiency, insufficient connection stability and difficulty in reuse of guardrails in the prior art.
[0006] To achieve the above objectives, the present invention proposes a prefabricated protective barrier device for intercity railway foundation pits, comprising: A concrete base is provided on the intercity railway foundation pit, and the top of the concrete base is provided with a plurality of spaced assembly slots, all of which extend vertically. Multiple mounting rods are provided, the number of which is consistent with the number of the assembly slots and are set in a one-to-one correspondence. Each mounting rod extends vertically, and one end of each mounting rod extends into the corresponding assembly slot and is detachably connected to the assembly slot. Multiple limiting components are provided, the number of which is the same as the number of mounting rods and they are set in a one-to-one correspondence. Each limiting component is detachably connected to the corresponding mounting rod. A protective net extends along a first horizontal direction, and the protective net is provided between each of two adjacent limiting components. Each of the two adjacent limiting components is detachably clamped at both ends of the corresponding protective net along its extension direction.
[0007] In one embodiment, the mounting rod has an assembly space that extends vertically. The mounting rod has two sidewalls spaced apart along the first horizontal direction, each with an assembly opening that communicates with the assembly space. The assembly opening extends vertically, and each limiting component extends into the assembly space through the assembly opening and is detachably connected to the corresponding mounting rod.
[0008] In one embodiment, the mounting rod has two sidewalls spaced apart along the second horizontal direction, each having an assembly hole communicating with the assembly space. The assembly hole extends along the second horizontal direction. The limiting component has an installation hole corresponding to the position of the assembly hole. The installation hole and the assembly hole are detachably connected by bolts. The second horizontal direction intersects the first horizontal direction.
[0009] In one embodiment, the limiting component includes a first limiting plate and a second limiting plate, both extending vertically and spaced apart along the second horizontal direction. The first and second limiting plates are detachably clamped to the ends of the protective net. Both the first and second limiting plates extend into the assembly space through the assembly opening, and each of the first and second limiting plates has a mounting hole corresponding to the position of the assembly hole. The bolt passes through the assembly hole, the mounting hole, and the assembly space between the first limiting plate, the second limiting plate, and the mounting rod.
[0010] In one embodiment, the limiting component further includes a connecting structure, which is installed between the first limiting plate and the second limiting plate, and is connected to either the first limiting plate or the second limiting plate. The connecting structure passes through the mesh at the end of the protective net.
[0011] In one embodiment, the connection structure includes a plurality of connection protrusions, which are arranged at vertical intervals and each connection protrusion passes through the mesh at the end of the protective net.
[0012] In one embodiment, the circumferential sidewall of the mounting rod is detachably provided with an adjustment component, the adjustment component being disposed near the bottom end of the mounting rod, the adjustment component being used to abut the periphery of the mounting rod against the groove wall of the corresponding assembly groove.
[0013] In one embodiment, the positioning assembly includes a plurality of wedges, which are spaced apart along the periphery of the mounting rod, and the size of each wedge gradually increases vertically from the bottom end of the mounting rod upwards.
[0014] In one embodiment, the circumferential sidewall of the mounting rod is provided with a plurality of first insertion ports, the number of the first insertion ports being consistent with the number of the wedge blocks and being arranged in a one-to-one correspondence, and each wedge block being detachably inserted into the corresponding first insertion port.
[0015] In one embodiment, the circumferential sidewall of the mounting rod is provided with a plurality of second sockets. The plurality of second sockets arranged on the same horizontal plane form a group. The multiple groups of second sockets are arranged at vertical intervals. The number of wedge blocks is consistent with the number of a group of second sockets and is arranged in a one-to-one correspondence. Each wedge block can be detachably inserted into the corresponding second socket.
[0016] This invention utilizes an assembly structure of a concrete base and detachable mounting rods, combined with limiting components to clamp and fix the protective netting. This enables rapid assembly, disassembly, and reuse of the guardrail components, reducing construction time and costs. The bidirectional clamping structure of the protective netting effectively resists vibration and wind loads, preventing the netting from detaching. The assembly structure of the base and mounting rods improves installation accuracy through prefabricated slots and adjustment components, adapting to the needs of foundation pit construction under different geological conditions. This improves construction efficiency while ensuring safety and reducing maintenance costs. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0018] Figure 1 A schematic diagram of an embodiment of the prefabricated protective barrier device for intercity railway foundation pits provided by this utility model; Figure 2 This is a schematic diagram of the structure of an embodiment of the assembly groove involved in this utility model; Figure 3 This is an exploded structural diagram of an embodiment of the mounting rod, limiting component, bolt, and adjusting component involved in this utility model; Figure 4 An exploded view of an embodiment of the limiting component involved in this utility model.
[0019] Explanation of icon numbers: 10. Concrete base; 11. Assembly groove; 100. Mounting rod; 200. Limiting component; 300. Protective net; 400. Bolt; 500. Adjustment component; 101. Assembly space; 102. Assembly port; 103. Assembly hole; 104. First insertion port; 105. Second insertion port; 201. Mounting hole; 210. First limiting plate; 220. Second limiting plate; 230. Connecting structure; 231. Connecting protrusion; 510. Wedge block.
[0020] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0022] It should be noted that if the embodiments of this utility model 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 specific posture. If the specific posture changes, the directional indicators will also change accordingly.
[0023] Furthermore, if the embodiments of this utility model 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 use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, 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. When 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 utility model.
[0024] With the increasing demand for safety protection during railway foundation pit construction, foundation pit guardrails, as key safety facilities on construction sites, have become an important direction for the industry's technological development in terms of structural stability, assembly efficiency, and adaptability.
[0025] Traditional protection solutions often employ fixed welded structures or temporary, simple barriers, which have numerous technical drawbacks. While commonly available pit safety railings improve foundation rigidity through steel structure welding or bolted connections, they still face significant challenges in practical applications.
[0026] First, welding is not only inefficient for disassembly but also severely impacts the reusability of components, while requiring significant time for welding operations on-site. Second, the connection between the protective netting and the supporting structure typically uses simple binding or clip-on methods, which are highly susceptible to loosening and detachment under external impact or uneven foundation settlement, posing serious safety hazards. Third, the assembly precision of the base and columns relies entirely on manual on-site adjustments, making it difficult to guarantee consistent installation quality. More importantly, traditional guardrail structures are ill-suited to the complex and varied terrain of intercity railway foundation pits, failing to adapt quickly or meet the practical needs of project reuse, resulting in persistently high safety risks and continuously increasing maintenance costs.
[0027] To solve this technical problem, this utility model proposes a prefabricated protective barrier device for intercity railway foundation pits.
[0028] Please see Figure 1 and Figure 2 In one embodiment of this utility model, the prefabricated guardrail device for intercity railway foundation pits includes a concrete base 10, a protective net 300, multiple mounting rods 100, and multiple limiting components 200. The concrete base 10 is disposed in the intercity railway foundation pit, and the top of the concrete base 10 is provided with multiple spaced-apart mounting slots 11, all of which extend vertically. The number of mounting rods 100 is consistent with the number of mounting slots 11 and is arranged in a one-to-one correspondence. Each mounting rod 100 extends vertically. One end of the 00 extends into the corresponding mounting groove 11 and is detachably connected to the mounting groove 11; the number of limiting components 200 is the same as the number of mounting rods 100 and they are set one-to-one, and each limiting component 200 is detachably connected to the corresponding mounting rod 100; the protective net 300 extends along the first horizontal direction, and a protective net 300 is provided between each two adjacent limiting components 200, and each two adjacent limiting components 200 are detachably clamped at both ends of the corresponding protective net 300 along its extension direction.
[0029] It should be noted that the concrete base 10 refers to the load-bearing structure pre-embedded at the edge of the foundation pit, which can be implemented using precast concrete blocks. The assembly groove 11 on its top can be a rectangular groove or a dovetail groove structure, used to position the installation rod 100. The installation rod 100 refers to a vertical support component, for example, made of hollow square steel pipe. After the bottom end is inserted into the assembly groove 11, the verticality of the installation is adjusted by the wedge block 510. The limiting component 200 refers to the mechanism for clamping the protective net 300, for example, it is composed of two parallel steel plates, which are fastened by bolts 400 to clamp the end of the protective net 300. The protective net 300 refers to a wire mesh structure, such as a diamond-shaped galvanized steel wire mesh, which extends horizontally between adjacent limiting components 200.
[0030] More specifically, the concrete base 10 is pre-embedded during the foundation pit excavation stage, and multiple assembly slots 11 are arranged according to the design spacing. During installation, the bottom end of the mounting rod 100 is vertically inserted into the corresponding assembly slot 11, and the circumferential position of the mounting rod 100 is adjusted by the adjustment component 500 to ensure close contact with the slot wall. After all the mounting rods 100 are fixed, the limiting component 200 is inserted into the assembly openings 102 on both sides of the mounting rod 100, and the bolts 400 are passed through the mounting holes 201 to achieve fastening. The protective net 300 is unfolded horizontally, and its two ends are clamped and fixed by two adjacent limiting components 200. The mesh edge can be inserted into the connecting protrusions 231 inside the limiting component 200 to enhance the anti-slip ability. When the foundation settles, the verticality of the mounting rod 100 can be corrected by adjusting the position of the wedge block 510.
[0031] Compared to existing technologies, traditional welded columns require cutting and dismantling and cannot be reused. In contrast, this solution uses a plug-in connection between the mounting rod 100 and the base, allowing for easy removal and recycling simply by removing the adjusting component 500. Existing protective netting 300 is secured with wire binding; this solution uses the bidirectional clamping of the limiting component 200 and a mesh interlacing structure to create multi-directional constraints and prevent netting displacement. Existing base-to-column assembly relies on manual calibration; this solution achieves rapid and accurate positioning through prefabricated assembly slots 11 and adjustable wedge blocks 510.
[0032] In the technical solution provided by this utility model, the protective netting 300 is clamped and fixed by the assembly structure of the concrete base 10 and the detachable mounting rod 100, combined with the limiting component 200, realizing the rapid assembly and disassembly and reuse of the guardrail components, reducing construction time and costs. The bidirectional clamping structure of the protective netting 300 effectively resists vibration and wind loads, avoiding the risk of the netting falling off. The assembly structure of the base and the mounting rod 100 improves the installation accuracy through prefabricated slots and the adjustment component 500, adapting to the needs of foundation pit construction under different geological conditions, improving construction efficiency while ensuring safety protection performance and reducing operation and maintenance costs.
[0033] Please continue reading. Figure 1 And see Figure 3 In an embodiment of this utility model, an assembly space 101 is provided inside the mounting rod 100. The assembly space 101 extends vertically. The two side walls of the mounting rod 100, which are spaced apart along the first horizontal direction, are each provided with an assembly opening 102 that communicates with the assembly space 101. The assembly opening 102 extends vertically. Each limiting component 200 extends into the assembly space 101 through the assembly opening 102 and is detachably connected to the corresponding mounting rod 100.
[0034] It should be noted that the assembly space 101 refers to the longitudinal cavity formed inside the mounting rod 100, which can be implemented using a hollow profile or a welded closed structure. It accommodates the insertion portion of the limiting component 200 and provides space for connection operations. The assembly opening 102 refers to the longitudinal opening on the side wall of the mounting rod 100, which can be formed using cutting or stamping processes. It allows the limiting component 200 to be inserted laterally into the assembly space 101 while maintaining the overall structural strength of the mounting rod 100. The detachable connection means that the limiting component 200 and the mounting rod 100 are separably fixed using bolts 400 or pins. This can be achieved using pre-drilled threaded holes and fasteners, facilitating quick assembly and disassembly and preventing permanent structural damage.
[0035] More specifically, the mounting rod 100 adopts a hollow structure to form a vertically extending assembly space 101, with through-hole vertical assembly openings 102 on both side walls. After the limiting component 200 is horizontally inserted into the assembly space 101 through the assembly openings 102, it is fixed by bolts 400 passing through the assembly holes 103 on the side walls of the mounting rod 100 and the mounting holes 201 of the limiting component 200. This structure creates a bidirectional constraint between the limiting component 200 and the mounting rod 100, restricting horizontal displacement while bearing vertical loads. The vertical extension characteristic of the assembly openings 102 allows the height of the limiting component 200 to be adjusted during installation to accommodate different sizes of the protective netting 300. This solution, through the cooperation of the assembly space 101 and the assembly openings 102, allows the limiting component 200 to be embedded inside the mounting rod 100 to form a three-dimensional fixation, significantly improving connection stability. Simultaneously, the bolt connection method replaces welding, avoiding thermal deformation that affects structural accuracy and enabling rapid disassembly and maintenance. This design effectively solves the problem of unstable connection between the protective netting 300 and the supporting structure. Through the combination of the internal assembly space 101 and the bidirectional bolts 400, the ends of the protective netting 300 are rigidly clamped and evenly stressed. When encountering slope deformation or mechanical impact, the structure can disperse the impact force through the three-dimensional cooperation of the limiting component 200 and the mounting rod 100, preventing the protective netting 300 from falling off. Simultaneously, the modular assembly method significantly shortens on-site construction time, adapting to the frequent adjustments required in the construction environment of intercity railway foundation pits.
[0036] Please continue reading. Figure 3In an embodiment of this utility model, the mounting rod 100 has two side walls spaced apart along the second horizontal direction, each having an assembly hole 103 communicating with the assembly space 101. The assembly hole 103 extends along the second horizontal direction. The limiting component 200 has an installation hole 201 at the position corresponding to the assembly hole 103. The installation hole 201 and the assembly hole 103 are detachably connected by bolts 400. The second horizontal direction intersects with the first horizontal direction.
[0037] It should be noted that the assembly hole 103 refers to a through-hole structure located on the side wall of the mounting rod 100 and communicating with the internal assembly space 101. Specifically, it can be symmetrically opened on both sides of the mounting rod 100 by machining, used to accommodate the bolt 400 and form a connection interface. The mounting hole 201 refers to a hole on the limiting component 200 corresponding to the position of the assembly hole 103. It can be formed by drilling or punching, and its diameter matches the diameter of the bolt 400 for precise positioning. The bolt 400 connection refers to fixing the limiting component 200 to the mounting rod 100 using threaded fasteners. Specifically, a standard hexagonal bolt 400 with a nut can be used for a detachable connection.
[0038] More specifically, the mounting rod 100 has mounting holes 103 extending into the internal assembly space 101 on both sides of the second horizontal direction, and the corresponding mounting holes 201 are machined on the limiting component 200. During assembly, the limiting component 200 is inserted into the mounting rod 100 through the mounting port 102 in the first horizontal direction. Then, the bolt 400 is passed sequentially through the mounting holes 103 of the mounting rod 100 and the mounting holes 201 of the limiting component 200 along the second horizontal direction, and finally the connection is completed by tightening with a nut. The second horizontal direction and the first horizontal direction form a spatial orthogonal relationship, so that the connection direction of the bolt 400 is perpendicular to the extension direction of the protective net 300, thereby constraining the displacement of the limiting component 200 in multiple dimensions.
[0039] This solution uses orthogonally arranged assembly holes 103 connected to bolts 400 to form a bidirectional rigid constraint, effectively limiting the movement of the limiting component 200 in both horizontal and vertical directions. The bolt 400 connection method also facilitates quick on-site disassembly and adjustment. This achieves a stable connection between the limiting component 200 and the mounting rod 100, preventing the protective netting 300 from shifting or falling off due to external forces. Furthermore, the standardized bolt 400 connection simplifies the assembly process, adapting to the needs of rapid deployment and reuse of guardrails under different terrain conditions.
[0040] Please continue reading. Figure 1 And see Figure 4In an embodiment of this utility model, the limiting component 200 includes a first limiting plate 210 and a second limiting plate 220. Both the first limiting plate 210 and the second limiting plate 220 extend vertically and are spaced apart along a second horizontal direction. The first limiting plate 210 and the second limiting plate 220 are detachably clamped to the end of the protective net 300. Both the first limiting plate 210 and the second limiting plate 220 extend into the assembly space 101 through the assembly port 102. The first limiting plate 210 and the second limiting plate 220 are provided with mounting holes 201 at positions corresponding to the assembly holes 103. The bolt 400 passes through the assembly holes 103, the mounting holes 201, and the assembly space 101 between the first limiting plate 210, the second limiting plate 220, and the mounting rod 100.
[0041] It should be noted that the first limiting plate 210 refers to a plate-like structure extending vertically, which can be made of steel plate, and is used to clamp one side of the end of the protective net 300. The second limiting plate 220 refers to a plate-like structure arranged parallel to the first limiting plate 210, which can also be made of steel plate, and is used to clamp the other side of the end of the protective net 300. The assembly port 102 refers to a vertical opening opened on the side wall of the mounting rod 100, which can be a rectangular groove structure, for the limiting plate to be inserted into the mounting rod 100. The mounting hole 201 refers to a through hole opened on the limiting plate, which can be a round hole structure, and is used to cooperate with the bolt 400 to fix the limiting plate to the mounting rod 100. The bolt 400 refers to a connecting fastener, which can be a hexagonal head bolt 400, and is used to lock the limiting plate to the mounting rod 100 after passing through the mounting hole 201 and the assembly hole 103.
[0042] More specifically, the end of the protective net 300 is clamped between the first limiting plate 210 and the second limiting plate 220, with the two limiting plates entering their internal space through the assembly port 102 of the insertion mounting rod 100. After the bolt 400 passes sequentially through the mounting holes 201 of the first limiting plate 210, the assembly hole 103 of the mounting rod 100, and the mounting hole 201 of the second limiting plate 220, a rigid connection between the three can be achieved by tightening the nut. This structure ensures that the end of the protective net 300 is firmly clamped between the two sets of limiting plates, while simultaneously forming a detachable mechanical connection between the limiting plates and the mounting rod 100.
[0043] Compared to existing technologies, traditional solutions only fix the protective netting 300 to the column using clips or binding, which is prone to connection failure due to vibration or impact. This solution uses two sets of limiting plates to form a bidirectional clamping structure, connected with through bolts 400, ensuring that the tensile force on the ends of the protective netting 300 is evenly distributed to the mounting rod 100, effectively avoiding the risk of detachment due to single-point stress. Through this technical solution, the connection stability between the protective netting 300 and the supporting structure is significantly improved, enabling it to withstand impact loads from mechanical collisions or foundation settlement commonly encountered during foundation pit construction. Simultaneously, the bolt 400 connection between the limiting plates and the mounting rod 100 facilitates disassembly and maintenance, requiring no damage to the original structure during reuse, significantly reducing operation and maintenance costs.
[0044] Please continue reading. Figure 4 In an embodiment of this utility model, the limiting component 200 further includes a connecting structure 230, which is installed between the first limiting plate 210 and the second limiting plate 220. The connecting structure 230 is connected to the first limiting plate 210 or the second limiting plate 220, and the connecting structure 230 passes through the mesh at the end of the protective net 300.
[0045] It should be noted that the connecting structure 230 refers to the auxiliary fixing component set between the first limiting plate 210 and the second limiting plate 220. Specifically, it can be connected to the limiting plates by welding or bolts 400 to enhance the clamping stability of the end of the protective net 300. This structure, by directly embedding into the mesh of the protective net 300, can effectively prevent the protective net 300 from sliding laterally when subjected to external impact.
[0046] More specifically, the connecting structure 230 is fixed within the clamping space formed by the first limiting plate 210 and the second limiting plate 220, and its extension direction is consistent with the unfolding direction of the protective net 300. During assembly, the end of the protective net 300 is placed between the two limiting plates, and the protrusions or hooks provided on the connecting structure 230 are inserted into the mesh gaps at the edge of the protective net 300, and then the entire structure is locked in place by bolts 400 that penetrate the limiting plates. This structure allows the end of the protective net 300 to simultaneously bear the clamping force from the limiting plates and the mesh interlocking force from the connecting structure 230, forming a dual fixing effect.
[0047] The connecting structure 230, through physical embedding of the mesh, mechanically interlocks the protective netting 300 with the limiting component 200, maintaining effective constraint even when the preload of the bolts 400 decreases. This application significantly improves the connection reliability between the protective netting 300 and the supporting structure, avoiding the problem of the protective netting 300 loosening and falling off due to long-term use or external forces. The mesh fitting design of the connecting structure 230 can adapt to different specifications of protective netting 300, maintaining stable clamping even in the complex terrain conditions of intercity railway foundation pits, reducing safety hazards caused by protective failure during construction.
[0048] In an embodiment of this utility model, the connecting structure 230 includes a plurality of connecting protrusions 231, which are arranged at vertical intervals, and each connecting protrusion 231 passes through the mesh at the end of the protective net 300.
[0049] It should be noted that the connecting protrusion 231 refers to a protruding structure extending outward from the surface of the limiting plate. It can be implemented using cylindrical or square cross-section metal or plastic parts, and forms a mechanical interlock by inserting into the mesh at the end of the protective net 300. The vertical spacing refers to the distribution of multiple connecting protrusions 231 at fixed intervals in the vertical direction. Specifically, this can be achieved by a uniform arrangement with a spacing of 10–30 cm, ensuring that the end of the protective net 300 is fixed at multiple height positions.
[0050] More specifically, after the mesh at the end of the protective net 300 is clamped by the first limiting plate 210 and the second limiting plate 220, the connecting protrusions 231 penetrate into the mesh gaps from the surface of the limiting plates, forming a multi-point interlocking connection. Since the connecting protrusions 231 are distributed vertically at intervals, the protective net 300 is constrained at different heights in the vertical direction, preventing the protective net 300 from sliding or falling off due to external impacts or foundation settlement. Furthermore, the interlocking method between the connecting protrusions 231 and the mesh eliminates the need for additional fasteners, simplifying the assembly process.
[0051] This solution significantly improves connection stability through multi-point insertion of the protrusions 231 and the mesh via mechanical interlocking. In existing technologies, the protective netting 300 relies solely on clamping force for fixation; this solution further utilizes the geometric fit between the protrusions and the mesh to create dual constraints, reducing maintenance frequency. It solves the problem of insecure connections at the ends of the protective netting 300, and the multi-point insertion interlocking enhances impact resistance, reducing the risk of displacement due to vibration or foundation deformation. Furthermore, the connection method between the protrusions 231 and the mesh allows for assembly and disassembly without complex tools, adapting to the needs of rapid deployment and reuse under different terrain conditions.
[0052] Please continue reading. Figure 3 In an embodiment of this utility model, an adjustment component 500 is detachably provided on the circumferential sidewall of the mounting rod 100. The adjustment component 500 is located near the bottom end of the mounting rod 100 and is used to press the periphery of the mounting rod 100 against the groove wall of the corresponding assembly groove 11.
[0053] It should be noted that the adjustment component 500 refers to a device that adjusts the gap between the mounting rod 100 and the base mounting groove 11 through a detachable structure. Specifically, it can be implemented using a wedge block 510, a connector, or a spring clip. Its function is to eliminate assembly errors between the mounting rod 100 and the mounting groove 11, ensuring the verticality and stability of the column. The wedge block 510 is a rigid block with a cross-sectional dimension that gradually changes along the height direction. It can be made of metal or high-strength composite material. Its gradually expanding design allows for adjustment of the contact pressure between the mounting rod 100 and the groove wall by adjusting the insertion depth, thereby compensating for the assembly gap.
[0054] More specifically, the adjustment component 500 is arranged on the circumferential sidewall of the mounting rod 100 near its bottom end and is detachably connected to the mounting rod 100. When the mounting rod 100 is inserted into the assembly groove 11 of the concrete base 10, if there is an assembly gap or installation tilt, the position of the adjustment component 500 can be adjusted so that the wedge block 510 forms a surface contact with the groove wall of the assembly groove 11, thereby forcing the mounting rod 100 into a vertical state and eliminating wobbling. For example, when the mounting rod 100 shifts due to base construction errors, the corresponding wedge block 510 can be inserted into the insertion port on the sidewall of the mounting rod 100. By tapping or screwing, the wedge block 510 can be moved along the insertion port, and the radial thrust generated by its gradually expanding cross-section can be used to press the mounting rod 100 against the groove wall.
[0055] This solution, through the pre-installed detachable adjustment component 500, enables rapid gap compensation during installation without the need for additional tools or complex operations, significantly improving assembly efficiency and precision. It solves the problem of relying on manual adjustment for the assembly precision of the base and column, achieving rapid and accurate positioning of the installation rod 100 and the assembly slot 11. This reduces the risk of guardrail tilting due to foundation settlement or construction errors. Furthermore, the detachable design of the adjustment component 500 facilitates later maintenance and reuse.
[0056] Please continue to refer to Figure 1 , Figure 2 and Figure 3 In an embodiment of this utility model, the adjustment component 500 includes a plurality of wedge blocks 510, which are spaced apart along the periphery of the mounting rod 100, and the size of each wedge block 510 gradually expands vertically from the bottom end of the mounting rod 100 upwards.
[0057] It should be noted that the wedge-shaped block 510 refers to a block-shaped structure with an inclined surface, which can be achieved by metal casting or engineering plastic injection molding. Its gradually expanding shape can generate radial expansion force through vertical displacement. The peripheral spacing setting refers to the ring-shaped arrangement along the outer surface of the column, which can be achieved by equal-angle intervals or asymmetrical distribution to ensure that the gap between the column and the base assembly groove 11 is uniformly filled.
[0058] More specifically, when the mounting rod 100 is inserted into the assembly groove 11 of the concrete base 10, the operator can choose to insert the wedge block 510 into a pre-set socket on the side wall of the mounting rod 100. Since the thickness of the wedge block 510 gradually increases from bottom to top, when the wedge block 510 is struck vertically into the socket, its expanding structure will push outward against the side wall of the mounting rod 100, causing a slight displacement of the mounting rod 100 and thus forming a tight contact with the inner wall of the assembly groove 11. This process allows for precise positioning of the mounting rod 100 within the assembly groove 11 by adjusting the insertion depth of the wedge block 510 at different positions.
[0059] Compared to existing technologies, traditional methods of adjusting the gap between the base and the post rely on manual shims or bolts (400mm jacking structure), which are cumbersome and lack stability. The gradually expanding wedge block 510, however, generates self-locking radial pressure through its geometric characteristics, simplifying the assembly process and enhancing the post's verticality. Through this technical solution, this application achieves rapid and precise positioning of the mounting rod 100 and the base mounting groove 11, effectively eliminating the risk of post tilting due to uneven foundation. The adaptive adjustment characteristics of the gradually expanding wedge block 510 can compensate for dimensional deviations in the mounting groove 11, preventing chain-like instability caused by localized loosening of the guardrail structure.
[0060] Please continue reading. Figure 3 In an embodiment of this utility model, the circumferential sidewall of the mounting rod 100 is provided with a plurality of first insertion ports 104. The number of first insertion ports 104 is consistent with the number of wedge blocks 510 and is set in a one-to-one correspondence. Each wedge block 510 can be detachably inserted into the corresponding first insertion port 104.
[0061] It should be noted that the first insertion port 104 refers to the opening structure on the side wall of the mounting rod 100 for inserting the wedge block 510. Specifically, it can be implemented using rectangular or trapezoidal slots, distributed circumferentially and forming a group on the same horizontal plane. The wedge block 510 refers to a block-shaped structure with a cross-sectional dimension that gradually expands vertically. It can be made of metal or high-strength composite material. After being inserted into the first insertion port 104, it achieves a tight fit between the mounting rod 100 and the base assembly groove 11 through the pressure of the inclined surface. The multiple sets of first insertion ports 104 arranged at vertical intervals refer to the arrangement of multiple sets of insertion ports at different heights on the side wall of the mounting rod 100. Specifically, they can be arranged in an equidistant or non-equidistant manner, providing multiple installation position options for the wedge block 510.
[0062] Specifically, the mounting rod 100 has multiple sets of vertically distributed first insertion slots 104 on its side wall, each set containing multiple slots located on the same horizontal plane. When the mounting rod 100 is inserted into the assembly groove 11 of the concrete base 10, wedge blocks 510 can be inserted into different sets of insertion slots at different heights, depending on the actual size of the base or the foundation settlement. After the wedge blocks 510 are inserted, their gradually expanding inclined surfaces make extrusive contact with the inner wall of the assembly groove 11, thereby eliminating the assembly gap between the mounting rod 100 and the base. By adjusting the insertion position of the wedge blocks 510, the verticality and circumferential fixing effect of the mounting rod 100 can be precisely controlled.
[0063] Through the above technical solution, this application achieves dynamic compensation for the gap between the mounting rod 100 and the base assembly groove 11, solving the problem of decreased assembly accuracy caused by base deformation in traditional guardrails. With multiple sets of connectors, the position of the mounting rod 100 can be quickly adjusted without disassembling the overall structure, significantly improving the adaptability of the guardrail under complex geological conditions and its maintenance efficiency.
[0064] Please continue reading. Figure 3 In an embodiment of this utility model, the circumferential sidewall of the mounting rod 100 is provided with a plurality of second insertion ports 105. The plurality of second insertion ports 105 arranged on the same horizontal plane form a group. The multiple groups of second insertion ports 105 are arranged at intervals along the vertical direction. The number of wedge blocks 510 is consistent with the number of a group of second insertion ports 105 and is arranged one-to-one. Each wedge block 510 can be detachably inserted into the corresponding second insertion port 105.
[0065] It should be noted that the second socket 105 refers to an opening structure formed on the circumferential side wall of the mounting rod 100, which can be implemented as a rectangular or trapezoidal slot, used to accommodate the insertion of the wedge block 510. A group of second sockets 105 on the same horizontal plane refers to multiple sockets evenly distributed circumferentially along the mounting rod 100, with their axes at the same horizontal height. For example, the sockets can be machined to form an evenly spaced arrangement to ensure uniform force when the wedge block 510 is inserted. Multiple groups of second sockets 105 spaced vertically mean that the socket groups are distributed in layers in the vertical direction, for example, a group of sockets is set at certain heights to support the adjustment needs of different installation heights. A one-to-one correspondence between the wedge block 510 and the second socket 105 means that each socket is equipped with an independent wedge block 510, for example, using a standardized size metal block, achieving rapid positioning through a plug-in method.
[0066] More specifically, the mounting rod 100 has multiple sets of second insertion slots 105 on its circumferential sidewalls, with each set of slots evenly distributed circumferentially within the same horizontal plane. When the mounting rod 100 is inserted into the assembly slot 11 of the concrete base 10, different height sets of insertion slots can be selected to insert the wedge blocks 510 according to the topography of the foundation pit or the size differences of the assembly slot 11. For example, if there are local gaps in the assembly slot 11, the operator can select the insertion slot set near the bottom of the mounting rod 100 to insert the wedge blocks 510, and use the contact between the inclined surface of the wedge blocks 510 and the inner wall of the assembly slot 11 to achieve fine-tuning of the radial position of the mounting rod 100. When the foundation pit settles, the wedge blocks 510 of the original insertion slot set can be removed and replaced with insertion slot sets at higher positions to keep the mounting rod 100 vertical.
[0067] In some embodiments, the depth of the second socket 105 may be slightly greater than the length of the insertion portion of the wedge block 510, for example, the socket depth may be 1.2 times the length of the wedge block 510, to avoid over-insertion that could lead to difficulty in disassembly. The wedge block 510 may be made of a metal material with anti-slip texture, such as a knurled cast iron block, to enhance friction with the inner wall of the socket.
[0068] Compared to existing technologies, the assembly of traditional guardrail bases and posts relies on manual on-site adjustments, requiring the use of shims or tapping to correct installation deviations, which is time-consuming and difficult to guarantee accuracy. This solution, however, utilizes multiple sets of second connectors 105 and wedge blocks 510 to enable multi-point radial adjustment at different heights of the mounting rod 100. This allows for rapid verticality correction of the mounting rod 100 without additional tools, significantly shortening the construction cycle.
[0069] Through the above technical solution, this application solves the problem that the assembly accuracy of the base and column is limited by on-site manual adjustment, realizes the rapid positioning and stable fixing of the installation rod 100 under different foundation conditions, and improves the reusability and maintenance convenience of the guardrail device through the modular plug design.
[0070] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.
Claims
1. A prefabricated protective barrier device for intercity railway foundation pits, characterized in that, include: A concrete base is provided on the intercity railway foundation pit, and the top of the concrete base is provided with a plurality of spaced assembly slots, all of which extend vertically. Multiple mounting rods are provided, the number of which is consistent with the number of the assembly slots and are set in a one-to-one correspondence. Each mounting rod extends vertically, and one end of each mounting rod extends into the corresponding assembly slot and is detachably connected to the assembly slot. Multiple limiting components are provided, the number of which is the same as the number of mounting rods and they are set in a one-to-one correspondence. Each limiting component is detachably connected to the corresponding mounting rod. A protective net extends along a first horizontal direction, and the protective net is provided between each of two adjacent limiting components. Each of the two adjacent limiting components is detachably clamped at both ends of the corresponding protective net along its extension direction.
2. The prefabricated protective barrier device for intercity railway foundation pits as described in claim 1, characterized in that, The mounting rod has an assembly space that extends vertically. The mounting rod has two side walls spaced apart along the first horizontal direction, each with an assembly opening that communicates with the assembly space. The assembly opening extends vertically, and each limiting component extends into the assembly space through the assembly opening and is detachably connected to the corresponding mounting rod.
3. The prefabricated protective barrier device for intercity railway foundation pits as described in claim 2, characterized in that, The mounting rod has two side walls spaced apart along the second horizontal direction, each with an assembly hole communicating with the assembly space. The assembly hole extends along the second horizontal direction. The limiting component has an installation hole corresponding to the position of the assembly hole. The installation hole and the assembly hole are detachably connected by bolts. The second horizontal direction intersects with the first horizontal direction.
4. The prefabricated protective barrier device for intercity railway foundation pits as described in claim 3, characterized in that, The limiting assembly includes a first limiting plate and a second limiting plate, both extending vertically and spaced apart along the second horizontal direction. The first and second limiting plates are detachably clamped to the ends of the protective net. Both the first and second limiting plates extend into the assembly space through the assembly opening, and mounting holes are provided on both the first and second limiting plates at positions corresponding to the assembly holes. The bolt passes through the assembly holes, the mounting holes, and the assembly space between the first limiting plate, the second limiting plate, and the mounting rod.
5. The prefabricated protective barrier device for intercity railway foundation pits as described in claim 4, characterized in that, The limiting component also includes a connecting structure, which is installed between the first limiting plate and the second limiting plate. The connecting structure is connected to the first limiting plate or the second limiting plate and passes through the mesh at the end of the protective net.
6. The prefabricated protective barrier device for intercity railway foundation pits as described in claim 5, characterized in that, The connection structure includes multiple connecting protrusions, which are arranged at vertical intervals, and each connecting protrusion passes through the mesh at the end of the protective net.
7. The prefabricated protective barrier device for intercity railway foundation pits as described in any one of claims 1 to 6, characterized in that, The mounting rod has a detachable adjusting component on its circumferential sidewall. The adjusting component is located near the bottom end of the mounting rod and is used to press the periphery of the mounting rod against the wall of the corresponding mounting groove.
8. The prefabricated protective barrier device for intercity railway foundation pits as described in claim 7, characterized in that, The adjustment assembly includes multiple wedge blocks, which are spaced apart along the periphery of the mounting rod, and the size of each wedge block gradually increases vertically from the bottom end of the mounting rod upwards.
9. The prefabricated protective barrier device for intercity railway foundation pits as described in claim 8, characterized in that, The mounting rod has multiple first insertion ports on its circumferential sidewall. The number of first insertion ports is the same as the number of wedge blocks and they are set in a one-to-one correspondence. Each wedge block can be detachably inserted into the corresponding first insertion port.
10. The prefabricated protective barrier device for intercity railway foundation pits as described in claim 8, characterized in that, The mounting rod has multiple second sockets on its circumferential sidewall. Multiple second sockets on the same horizontal plane form a group. Multiple groups of second sockets are arranged at vertical intervals. The number of wedge blocks is the same as the number of a group of second sockets and they are arranged in a one-to-one correspondence. Each wedge block can be detachably inserted into the corresponding second socket.