Explosion-proof steel plate for blasting of urban rock foundation pit

Abstract

The utility model relates to the technical field of construction, and provides an anti-explosion steel plate for blasting of an urban rock foundation pit, which comprises a foundation pit concrete support frame and a steel plate assembly, the foundation pit concrete support frame is arranged at the position of the foundation pit, and the steel plate assembly is arranged on the foundation pit concrete support frame; the steel plate assembly comprises a steel plate mounting frame, a roller support and a lifting hook; one end of each lifting hook is fixedly connected with the side face of the steel plate mounting frame, the two ends of the steel plate mounting frame are provided with the multiple roller supports respectively, and one end of each roller support is connected with the foundation pit concrete supporting frame in a rolling mode, so that potential safety hazards caused by flying stones generated by blasting to surrounding high-rise buildings are effectively eliminated; good market application values are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of construction, in particular to an explosion-proof steel plate used for urban rock foundation pit blasting. Background Art

[0002] With the rapid advancement of urban rail transit construction in my country, the subway and light rail networks in major cities are extending and expanding at an unprecedented speed, and the road network is becoming increasingly tight; especially in the core areas of bustling cities and densely populated areas with numerous ground buildings, in order to save precious ground space resources, subway and light rail lines have to develop deep underground; however, the underground geological conditions are complex, often with slightly weathered granite geological structures with extremely high hardness and less obvious internal cracks, which undoubtedly greatly increases the technical difficulty of station foundation pit excavation construction.

[0003] Given the rock characteristics and hardness of such underground foundation pits, the construction challenges are particularly severe; coupled with the high utilization and limitations of urban underground space, it is crucial to strictly control the impact of construction activities on the surrounding environment during the construction of underground facilities; in view of this, facing the large area of ​​high-strength slightly weathered granite in the station foundation pit, traditional non-explosive excavation methods are often inadequate and difficult to complete the task efficiently. Therefore, blasting construction has become an indispensable construction method under such conditions. However, the flying rocks generated by blasting pose a major threat to the safety of nearby high-rise buildings. Utility Model Content

[0004] The utility model solves the problem of effectively controlling flying rocks after blasting, which poses a serious threat to the safety of nearby high-rise buildings.

[0005] In order to solve the above problems, the utility model provides an explosion-proof steel plate for urban rock foundation pit blasting, including a foundation pit concrete support frame and a steel plate assembly, wherein the foundation pit concrete support frame is arranged at the foundation pit, and the steel plate assembly is arranged on the foundation pit concrete support frame; the steel plate assembly includes a steel plate mounting frame, a roller support and a hook; one end of a plurality of the hooks is fixedly connected to the side of the steel plate mounting frame, and a plurality of the roller supports are respectively arranged at both ends of the steel plate mounting frame, and one end of the plurality of the roller supports is rollingly connected to the foundation pit concrete support frame.

[0006] Preferably, the steel plate mounting frame includes connecting steel plates, connecting horizontal beams and connecting vertical beams; both ends of the multiple connecting horizontal beams are respectively fixedly connected to the multiple connecting vertical beams, and the multiple connecting steel plates are respectively laid on the multiple connecting horizontal beams and the multiple connecting vertical beams.

[0007] Preferably, each of the connecting horizontal beams and each of the connecting vertical beams is an I-beam.

[0008] Preferably, bosses are respectively arranged on both sides and both ends of each of the connecting steel plates, and are respectively embedded in the grooves of the plurality of connecting horizontal beams and the plurality of connecting vertical beams.

[0009] Preferably, each of the hooks is configured to be U-shaped.

[0010] Preferably, each of the roller supports includes a support seat, a connecting bolt and a supporting roller; the top of the support seat is fixedly connected to the bottom of the connecting vertical beam, the supporting roller is rotatably connected to the support seat, the connecting bolts respectively penetrate the support seat and the supporting roller, and nuts are respectively provided at both ends of the connecting bolts.

[0011] Preferably, the foundation pit concrete support frame is formed by welding channel steel.

[0012] Compared with the prior art, the utility model sets the foundation pit concrete support frame at the foundation pit to support the steel plate assembly, so that the steel plate assembly can become the key to blocking flying rocks at the moment of blasting;

[0013] The connecting crossbeams and vertical beams in the steel plate mounting frame are all made of I-beams, which have excellent mechanical properties, including high bending section modulus and good rigidity. This setting ensures that the steel plate mounting frame can maintain structural stability and integrity when subjected to blasting impact. At the same time, the structure of the I-beam can effectively disperse and conduct the vibration load caused by blasting, enhancing the ability of the explosion-proof steel plate assembly to resist blasting flying rocks, thereby more effectively protecting the surrounding high-rise buildings from flying rock damage;

[0014] Bosses are set on both sides and ends of each connecting steel plate, which are precisely matched with and embedded in the grooves on multiple connecting cross beams and multiple connecting vertical beams to form a stable nested connection structure. This physical embedding method greatly enhances the connection strength and stability between the connecting steel plate and the multiple connecting cross beams and multiple connecting vertical beams, ensuring that during the blasting construction process, even if a strong impact is encountered, the connecting steel plate will fall out of the foundation pit concrete support frame, always maintaining its effectiveness as an explosion-proof barrier, reducing the risk of loosening of the connection parts, and improving the overall durability and safety of the steel plate assembly.

[0015] Each hook adopts a U-shaped design, which can not only fit closely with the hook of the lifting equipment, improve the lifting stability, and reduce the potential safety hazards caused by unstable hooks, but also can be more firmly locked on the connection point of the connecting steel plate, enhancing the suspension safety during the lifting process, preventing accidental falling off when lifting, moving or positioning the explosion-proof steel plate, and also preventing debris from entering the hook, ensuring the safety and smoothness of the construction process;

[0016] The roller support is composed of a support seat, connecting bolts and a supporting roller. The supporting roller and the support seat can rotate freely, and the connecting bolts ensure the firm connection and adjustability of the roller and the support seat through nuts at both ends. In this way, the steel plate mounting frame can be flexibly translated and positioned according to the needs of blasting construction, which is convenient and quick to adjust the position of the connecting steel plate, effectively control the diffusion range of blasting flying stones, and improve the safety and efficiency of blasting construction;

[0017] The concrete support frame for the foundation pit is welded into an integral shape by using channel steel. Due to the unique "concave"-shaped cross section of the channel steel, the concrete support frame for the foundation pit is endowed with higher structural strength and rigidity, so that it remains stable when subjected to the complex stress of rock blasting and is not easily deformed or broken. In addition, the channel steel welding process also strengthens the connection strength and integrity of the support structure, reduces the risk of support failure, and improves the resistance to the impact of flying rocks during blasting;

[0018] Finally, the utility model effectively improves the safety and efficiency of urban rock foundation pit blasting construction, enhances the protection of surrounding buildings, and optimizes the economy and convenience of the construction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of an explosion-proof steel plate used for urban rock foundation pit blasting in an embodiment of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the steel plate assembly in the embodiment of the utility model;

[0021] Figure 3 It is a partial schematic diagram of an explosion-proof steel plate used for urban rock foundation pit blasting in an embodiment of the utility model.

[0022] Explanation of the accompanying drawings: 1-foundation pit concrete support frame; 2-steel plate assembly; 3-steel plate mounting frame; 4-roller support; 5-hook; 6-connecting steel plate; 8-connecting vertical beam; 9-support seat; 10-connecting bolt; 11-support roller. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0024] It should be noted that the terms "first", "second", etc. in the specification and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the utility model described herein can be implemented in an order other than those illustrated or described herein.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In the description of this specification, the description with reference to the terms "embodiment", "one embodiment" and "one implementation" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or implementation are included in at least one embodiment or implementation of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or implementation. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or implementations in a suitable manner.

[0027] To solve the above problems, Figure 1 to Figure 2 As shown, an embodiment of the utility model provides an explosion-proof steel plate for urban rock foundation pit blasting, comprising a foundation pit concrete support frame 1 and a steel plate assembly 2, wherein the foundation pit concrete support frame 1 is arranged at the foundation pit, and the steel plate assembly 2 is arranged on the foundation pit concrete support frame 1; the steel plate assembly 2 comprises a steel plate mounting frame 3, a roller support 4 and a hook 5; one end of a plurality of the hooks 5 is fixedly connected to the side of the steel plate mounting frame 3, and a plurality of the roller supports 4 are respectively arranged at both ends of the steel plate mounting frame 3, and one end of the plurality of the roller supports 4 is rollingly connected to the foundation pit concrete support frame 1.

[0028] It should be noted that the foundation pit concrete support frame 1 is used to support the steel plate assembly 2. The foundation pit concrete support frame 1 is arranged at the foundation pit, thereby supporting the steel plate assembly 2, so that the steel plate assembly 2 can become the key to blocking flying rocks at the moment of blasting, and effectively eliminate the potential safety hazards caused by blasting flying rocks to surrounding high-rise buildings;

[0029] The steel plate assembly 2 is composed of a steel plate mounting frame 3, a roller support 4 and a hook 5. The tops of the multiple roller supports 4 are fixedly connected to the steel plate mounting frame 3, so that the steel plate mounting frame 3 can be conveniently adjusted horizontally and accurately covered on the foundation pit concrete support frame 1 according to construction needs to adapt to different blasting protection ranges and position requirements. The hook 5 is directly fixed on the steel plate mounting frame 3, which greatly enhances the overall lifting and transportation capabilities of the steel plate assembly 2, allowing construction personnel to quickly and safely load, unload and deploy the steel plate assembly 2, further improving the efficiency and safety of blasting construction.

[0030] In one embodiment of the utility model, the steel plate mounting frame 3 includes a connecting steel plate 6, a connecting horizontal beam 7 and a connecting vertical beam 8; the two ends of the multiple connecting horizontal beams 7 are respectively fixedly connected to the multiple connecting vertical beams 8, and the multiple connecting steel plates 6 are respectively laid on the multiple connecting horizontal beams 7 and the multiple connecting vertical beams 8.

[0031] It should be noted that the steel plate mounting frame 3 is constructed by connecting steel plates 6, connecting cross beams and connecting vertical beams. The two ends of the multiple connecting cross beams are respectively fixedly connected to the multiple vertical connecting vertical beams to form a stable frame structure. In this way, the overall bearing capacity and stability of the steel plate mounting frame 3 can be enhanced to ensure that it can still reliably play a role in preventing flying rocks under blasting impact. On this frame, multiple steel plates are evenly distributed and laid on each connecting cross beam and vertical beam, overlapping each other to form a complete and solid steel plate protection surface, which improves the effective interception range of blasting flying rocks, reduces the possibility of flying rocks harming surrounding buildings, and finally achieves a key role in flying rock protection in urban rock foundation pit blasting operations, which is effective in ensuring construction safety and the safety of the surrounding environment.

[0032] In one embodiment of the present invention, each of the connecting horizontal beams 7 and each of the connecting vertical beams 8 is an I-beam.

[0033] It should be noted that each connecting cross beam and each connecting vertical beam are made of I-beam. In the structure of the entire steel plate mounting frame 3, both the connecting cross beams that bear the horizontal support function and the connecting vertical beams that bear the longitudinal support function adopt the structural design of I-beams, which can have excellent mechanical properties.

[0034] Due to its unique geometric shape, the I-beam has a high bending section modulus and can maintain good rigidity while bearing large bending stress, thus ensuring the stability and structural integrity of the steel plate mounting frame 3 under blasting impact. The flange and web structure of the I-beam can effectively disperse and conduct the load applied thereto, enhancing the ability of the explosion-proof steel plate assembly 2 to resist blasting vibration, thereby helping to better control blasting flying rocks and protect surrounding buildings from damage.

[0035] Finally, it was achieved that the I-beam design was adopted for both the horizontal beam and the vertical beam of the steel plate mounting frame 3, which not only significantly enhanced the bearing capacity of the explosion-proof steel plate system and the performance of resisting the impact of blasting, but also improved the convenience and safety of construction at the practical operation level.

[0036] In one embodiment of the utility model, bosses are respectively arranged on both sides and ends of each of the connecting steel plates 6 , and are respectively embedded in the grooves of the plurality of connecting horizontal beams 7 and the plurality of connecting vertical beams 8 .

[0037] It should be noted that bosses are provided on both side edges and both ends of each connecting steel plate 6 to form protruding engaging platforms, and these bosses can accurately correspond to and be embedded in the preset grooves of the multiple connecting cross beams and the multiple connecting vertical beams, forming a stable nested connection structure;

[0038] The tight combination between the boss and the groove can greatly enhance the connection strength and stability between the connecting steel plate 6 and the multiple connecting cross beams and multiple connecting vertical beams, ensuring that during the blasting construction process, even if it is subjected to a strong impact, the connecting steel plate 6 will not easily break away from the supporting frame, maintaining its effectiveness as an explosion-proof barrier;

[0039] By means of such physical interlocking, the looseness of the connection parts can be reduced, the potential safety hazards caused by connection failure can be reduced, and the durability and safety of the entire explosion-proof steel plate assembly 2 can be improved;

[0040] Finally, the bosses on both sides and ends of the connecting steel plate 6 are embedded in the grooves in multiple connecting cross beams and multiple connecting vertical beams, which not only strengthens the structural coupling between the components, but also ensures that the connecting steel plate 6 can effectively control flying rocks during blasting, thereby improving safety.

[0041] In an embodiment of the present invention, each of the hooks 5 is configured to be U-shaped.

[0042] It should be noted that each hook 5 adopts a U-shaped design. First, the arc surface structure of the U-shaped hook 5 can ensure a close fit with a lifting device such as a crane hook, improve the stability during lifting, and reduce the safety hazards caused by the instability of the hook;

[0043] Secondly, the design of the U-shaped hook 5 allows it to more securely surround and lock the designated connection point on the steel plate mounting frame 3, thereby enhancing the suspension safety of the explosion-proof steel plate assembly 2 during lifting and preventing accidental falling off during lifting, moving or adjusting the position.

[0044] Finally, due to its closed structural characteristics, the U-shaped hook 5 can also prevent debris from entering the interior of the hook 5 during the operation to a certain extent, affecting the safety and smoothness of the lifting operation, further ensuring the safety and efficiency of the construction process.

[0045] Finally, each hook 5 is designed to be U-shaped, thereby improving the safety, stability and efficiency of the lifting work through the structural advantages.

[0046] In one embodiment of the utility model, each of the roller supports 4 includes a support seat 9, a connecting bolt 10 and a supporting roller 11; the top of the support seat 9 is fixedly connected to the bottom of the connecting vertical beam 8, the supporting roller 11 is rotatably connected to the support seat 9, the connecting bolt 10 passes through the support seat 9 and the supporting roller 11 respectively, and nuts are respectively provided at both ends of the connecting bolt 10.

[0047] It should be noted that if Figure 3 As shown, each roller support 4 is cooperatively composed of a support seat 9, a connecting bolt 10 and a supporting roller 11. The top end of the support seat 9 is fixedly connected to the bottom end of the connecting vertical beam to form a stable basic structure. The supporting roller 11 is rotated to connect with the support seat 9 to ensure the flexible rotation of the roller on the support seat 9. The connecting bolt 10 runs through the support seat 9 and the supporting roller 11, and nuts are provided at both ends to ensure the firm connection and adjustability between the roller and the support seat 9.

[0048] The rotation characteristics of the support roller 11 enable the steel plate mounting frame 3 to be flexibly translated and positioned according to the requirements of the blasting construction, so that the staff can quickly adjust the position of the explosion-proof steel plate and effectively control the diffusion range of the blasting flying rocks;

[0049] The fixed connection between the support seat 9 and the connecting vertical beam ensures the stability of the roller support 4 when bearing weight and impact, and the cooperation between the connecting bolt 10 and the nut not only ensures the connection strength between the roller and the support seat 9, but also facilitates disassembly, assembly, maintenance and adjustment.

[0050] This structural design ensures that the roller support 4 can withstand long-term heavy pressure and repeated movement without being easily damaged, and can be adjusted accordingly according to changes in different terrains and blasting environments, thereby improving the adaptability and service life of the entire explosion-proof steel plate system.

[0051] Finally, it was realized that the roller support 4 structure not only improved the flexibility and efficiency of the explosion-proof steel plate adjustment during the urban rock foundation pit blasting construction, but also greatly enhanced the stability and safety of the entire explosion-proof system, ensuring the effective protection of surrounding buildings during the construction process.

[0052] In one embodiment of the utility model, the foundation pit concrete support frame 1 is formed by welding channel steel.

[0053] It should be noted that the foundation pit concrete support frame 1 uses channel steel as raw material and is integrally formed through a welding process.

[0054] Thus, firstly, the channel steel can provide higher structural strength and rigidity due to its special "concave" shaped cross section, ensuring that the foundation pit concrete support frame 1 remains stable and is not prone to deformation or fracture when bearing various complex stresses such as foundation pit excavation above and rock blasting below;

[0055] Secondly, the use of channel steel welded into the foundation pit concrete support frame 1 is conducive to improving the connection strength and integrity of the support structure, avoiding the risk of support failure caused by weak material connection, and enhancing the resistance to the impact of blasting flying rocks;

[0056] Finally, the foundation pit concrete support frame 1 formed by channel steel welding has shown significant advantages in ensuring support stability, enhancing explosion-proof performance, simplifying construction procedures and reducing costs. It is an ideal support structure choice for urban rock foundation pit blasting construction.

[0057] It should be noted that the above-described implementation methods of the utility model do not constitute a limitation on the protection scope of the utility model. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model shall be included in the protection scope of the claims of the utility model.

Claims

1. An explosion-proof steel plate for urban rock foundation pit blasting, characterized in that: The invention comprises a foundation pit concrete support frame (1) and a steel plate assembly (2), wherein the foundation pit concrete support frame (1) is arranged at the foundation pit, and the steel plate assembly (2) is arranged on the foundation pit concrete support frame (1); the steel plate assembly (2) comprises a steel plate mounting frame (3), a roller support (4) and a hook (5); one end of a plurality of the hooks (5) is fixedly connected to the side of the steel plate mounting frame (3), and a plurality of the roller supports (4) are respectively arranged at both ends of the steel plate mounting frame (3), and one end of the plurality of the roller supports (4) is rollingly connected to the foundation pit concrete support frame (1).

2. The explosion-proof steel plate for urban rock foundation pit blasting according to claim 1, characterized in that: The steel plate mounting frame (3) comprises a connecting steel plate (6), a connecting cross beam (7) and a connecting vertical beam (8); the two ends of a plurality of connecting cross beams (7) are respectively fixedly connected to a plurality of connecting vertical beams (8), and a plurality of connecting steel plates (6) are respectively laid on the plurality of connecting cross beams (7) and the plurality of connecting vertical beams (8).

3. The explosion-proof steel plate for urban rock foundation pit blasting according to claim 2, characterized in that: Each of the connecting transverse beams (7) and each of the connecting vertical beams (8) is an I-beam.

4. The explosion-proof steel plate for urban rock foundation pit blasting according to claim 2, characterized in that: Bosses are respectively arranged on both sides and both ends of each connecting steel plate (6), and are respectively embedded in the grooves of the plurality of connecting horizontal beams (7) and the plurality of connecting vertical beams (8).

5. The explosion-proof steel plate for urban rock foundation pit blasting according to claim 1, characterized in that: Each of the hooks (5) is arranged in a U shape.

6. The explosion-proof steel plate for urban rock foundation pit blasting according to claim 2, characterized in that: Each of the roller supports (4) comprises a support seat (9), a connecting bolt (10) and a supporting roller (11); the top of the support seat (9) is fixedly connected to the bottom of the connecting vertical beam (8), the supporting roller (11) is rotatably connected to the support seat (9), the connecting bolt (10) respectively passes through the support seat (9) and the supporting roller (11), and nuts are respectively arranged at both ends of the connecting bolt (10).

7. The explosion-proof steel plate for urban rock foundation pit blasting according to claim 2, characterized in that: The foundation pit concrete support frame (1) is formed by welding channel steel.

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