Small-sized tunnel quick-release adjustable operation platform

Abstract

The utility model relates to a small -size tunnel quick -release adjustable operation platform belongs to underground engineering blasting construction technical field, including two parallel length adjustable section steel framework, the end of each section steel framework is hung to the hook, the hook is inserted into the hole wall, and a plurality of blocks of quick -release net board arranged side by side are detachably connected between two adjustable section steel framework. The utility model can flexibly adjust the height, width, angle and various parameters of platform according to different tunnel size, diversified construction technology and specific operation demand, so as to better adapt to the complex and changeable construction environment, greatly improve the applicability and universality of platform, make it can play a role in more different construction scene.

Description

Technical Field

[0001] This utility model belongs to the field of underground engineering blasting construction technology, and relates to a small tunnel blasting excavation operation platform, and in particular to a small tunnel quick-disassembly adjustable operation platform. Background Technology

[0002] Small tunnels have a small cross-sectional area, typically 15m² or less, with extremely limited internal space. This makes it difficult for large construction equipment to operate normally within them. Traditional large operating platforms cannot be easily accessed by engineering vehicles, and even if they are inside, they cannot be moved manually. During the blasting excavation of small-section tunnels, the cycle is short and rapid, requiring frequent installation, dismantling, or relocation of the operating platform to maintain the required safe blasting distance.

[0003] The most critical steps in blasting excavation are drilling and charging. The quality of drilling and charging directly affects the blasting effect. Drilling requires an operating platform to provide stable and reliable support, ensuring that the angle, depth, and spacing of the drill holes meet the design standards. Similarly, in the charging and wiring stages, an operating platform is needed to facilitate the smooth arrival of construction personnel at the designated location, ensuring that the entire charging and wiring process is safe, reliable, and of controllable quality.

[0004] However, due to the small cross-section of small tunnels, the construction efficiency is high and the cycle is fast. Each cycle of blasting operations is accompanied by the installation, movement and dismantling of the operating platform.

[0005] Existing technologies mainly use traditional scaffolding platforms, mobile scaffolding platforms, and lifting machinery platforms to build operating platforms. However, these operating platforms each have the following problems: 1. In the construction of small tunnels, temporary steel pipe scaffolding with couplers is often used to build working platforms by laying scaffold boards. However, this method has many drawbacks. On the one hand, it requires a large amount of reusable materials and labor, increasing construction costs and manpower input. On the other hand, its construction and dismantling are extremely slow, resulting in low construction efficiency and seriously affecting the overall project schedule. In addition, the stability of the scaffolding largely depends on the quality of its construction. Under the influence of external factors such as blasting vibrations, safety hazards can easily arise, threatening the lives of construction workers and the quality of the project. 2. While mobile scaffolding offers greater flexibility than traditional scaffolding, it also has significant drawbacks. Its height and width are typically fixed; once assembled, its dimensions may not match the actual height and width of the tunnel under construction, hindering workers' operations and impacting the smooth progress of construction. 3. Using lifting machinery such as forklifts or bulldozers to erect platforms for operations also presents several challenges. First, the number of operators and the use of small machinery are severely limited, making it difficult to guarantee construction precision and increasing the risk of operational errors. Second, this method of operation increases the risk to operators, threatening their personal safety. Furthermore, the limited operating range of these machines makes them ill-suited to the complex construction environment of small tunnels, hindering the smooth progress of construction.

[0006] Therefore, in order to solve these problems, this utility model proposes a small tunnel quick-release adjustable operating platform. Summary of the Invention

[0007] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a quick-release adjustable operating platform for small tunnels, which solves the technical problem that the operating platform needs to be frequently installed, disassembled and moved during the blasting excavation process of small tunnels in the prior art, thereby affecting construction efficiency, delaying the construction period and increasing construction costs.

[0008] To achieve the above and other related objectives, this utility model provides a small tunnel quick-release adjustable operating platform, comprising two parallel adjustable steel frames, each end of which is hung on a hook inserted into the tunnel wall, and several quick-release mesh plates arranged side by side are detachably connected between the two adjustable steel frames.

[0009] In any of the above embodiments, it is preferred that the steel frame includes a main load-bearing steel pipe, and both ends of the main load-bearing steel pipe are fitted with adjusting steel pipes in a clearance fit manner.

[0010] In any of the above embodiments, it is preferred that the length of the main load-bearing steel pipe is equal to the sum of the lengths of the two adjusting steel pipes.

[0011] In any of the above embodiments, it is preferred that the main load-bearing steel pipe and the adjusting steel pipe are provided with a number of positioning pin holes at equal intervals along their axial direction, and positioning pins can be inserted into the positioning pin holes. The suspended end of the adjusting steel pipe is provided with a 250-350mm hole-free safety redundancy zone.

[0012] In any of the above embodiments, it is preferred that the quick-release mesh plate includes a rectangular frame, the upper and lower ends of the rectangular frame are detachably connected to the steel frame, and the rectangular frame is welded with a threaded steel mesh.

[0013] In any of the above embodiments, it is preferred that the rectangular frame has a plurality of evenly spaced connecting holes at its upper and lower ends along its axial direction.

[0014] Preferably, in any of the above embodiments, the hook includes a rock-entry end and a U-shaped hook head.

[0015] In any of the above embodiments, it is preferred that the length of the rock-entry end is 1 to 1.2 m and the width of the U-shaped hook is 50 cm.

[0016] As described above, the small tunnel quick-release adjustable operating platform of this utility model has the following beneficial effects: 1. In this utility model, the operating platform has a wide range of applications and can be applied to small tunnels of different sizes. It can be customized according to the actual size and shape of different tunnels. Within a reasonable range, it can be adaptively adjusted according to the width of the tunnel, which can well meet the construction needs and has strong flexibility and adaptability. 2. In this utility model, the operating platform is easy to process and manufacture, and can be quickly installed and disassembled during actual construction without affecting the construction progress, greatly saving construction time and helping to improve the overall construction efficiency of the project. 3. In this utility model, the platform has high applicability, with each component modularly formed and possessing good reusability. It is well-suited for small-section tunnel construction, reducing construction costs, minimizing resource waste, and improving resource utilization, thus meeting the requirements of modern engineering construction for energy conservation, environmental protection, and cost control. Attached Figure Description

[0017] Figure 1 The diagram shown is a schematic diagram of the installation structure of this utility model; Figure 2 The diagram shows the structure of the quick-release adjustable operating platform. Figure 3 The diagram shows a structural schematic of a steel frame. Figure 4 The diagram shows the structure of the quick-release mesh plate. Figure 5 The diagram shows the structure of the hook. Figure 6 The diagram shows the connection structure between the hook and the steel frame.

[0018] Component designation explanation 1-Steel frame; 11-Main load-bearing steel pipe; 12-Adjusting steel pipe; 13-Positioning pin hole; 14-Safety redundancy zone without holes; 2-Quick release mesh plate; 21-Rectangular frame; 22-Threaded steel mesh; 3-Hook; 31-Rock entry end; 32-U-shaped hook head. Detailed Implementation

[0019] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0020] Please see Figures 1 to 6 It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the disclosed technical content. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0021] Please see Figure 1-6 This utility model provides a small tunnel quick-release adjustable operating platform, including two parallel adjustable steel frame frames 1, with each end of the steel frame frame 1 hung on a hook 3, the hook 3 inserted into the tunnel wall, and several quick-release mesh plates 2 arranged side by side detachably connected between the two adjustable steel frame frames 1.

[0022] In this embodiment, the quick-release adjustable operating platform for small tunnels consists of an adjustable steel frame 1, a quick-release mesh panel 2, and hooks 3. Two adjustable steel frames 1 are arranged parallel to each other to form a support frame. After adjusting the length of the steel frame 1 to fit the width of the tunnel, both ends of the steel frame 1 are hung on the hooks 3, and the hooks 3 are inserted into the tunnel wall to achieve a stable connection between the steel frame 1 and the tunnel wall. Then, the quick-release mesh panel 2 is fixedly connected to the steel frame 1 using positioning bolts. This connection method ensures the integrity and stability of the platform, making it more suitable for various operating scenarios in small tunnels and providing a reliable support platform for construction personnel.

[0023] As a further description of the above embodiment, the steel frame 1 includes a main load-bearing steel pipe 11, and both ends of the main load-bearing steel pipe 11 are fitted with adjusting steel pipes 12 in a clearance fit manner.

[0024] In this embodiment, the steel frame 1 adopts a graded nested structure, consisting of a main load-bearing steel pipe 11 and an adjusting steel pipe 12. The main load-bearing steel pipe 11 uses two φ60×2000mm high-strength seamless steel pipes as the load-bearing base, and is equipped with four φ50×1000mm seamless steel pipes as telescopic adjustment units. The main load-bearing steel pipe 11 and the adjusting steel pipe 12 are designed with a nested structure, and the adjusting steel pipe 12 is nested with the main load-bearing steel pipe 11 in a gap-fit ​​manner. This facilitates adjustment of the length of the steel frame 1 according to the operational scenarios of small tunnels, thereby meeting different usage requirements.

[0025] Meanwhile, in order to fix the steel frame 1 after it is adjusted to a suitable length, in this embodiment, φ12mm positioning pin holes 13 are opened at equal intervals of 200mm along the axial direction on both the main load-bearing steel pipe 11 and the adjusting steel pipe 12. The precise length adjustment of the steel frame 1 is achieved by cooperating with high-strength positioning pins.

[0026] Meanwhile, in order to facilitate the connection between the steel frame 1 and the hook 3, a 300mm non-perforated section is left at one end of the adjusting steel pipe 12 that extends out of the main load-bearing steel pipe 11 as a non-perforated safety redundancy zone 14.

[0027] Of course, the distance between two adjacent positioning pin holes 13 is not limited to 200mm, and can be adjusted accordingly based on the actual construction situation, within the range of 150 to 250mm.

[0028] The length of the non-porous safety redundancy zone 14 is not limited to 300mm; it can be adjusted according to the actual construction situation, and can be within the range of 250 to 350mm.

[0029] As a further description of the above embodiment, the quick-release mesh plate 2 includes a rectangular frame 21, the upper and lower ends of the rectangular frame 21 are detachably connected to the steel frame 1, and the rectangular frame 21 is welded with a threaded steel mesh 22.

[0030] In this embodiment, the quick-release mesh panel 2 is constructed by welding φ30 steel pipes and φ8 threaded steel mesh 22. First, a rectangular frame 21, 2m long and 0.5m wide, is welded end-to-end using φ30 steel pipes. Then, this rectangular frame 21 is welded to the φ8 threaded steel mesh 22 to form a sturdy whole. The entire quick-release mesh panel 2 possesses sufficient strength while providing a safe operating interface for construction workers. Furthermore, it is lightweight, easy to assemble and disassemble, and can be quickly moved and installed manually, making it convenient and efficient.

[0031] In this embodiment, in order to facilitate the detachable connection between the quick-release mesh plate 2 and the steel frame 1, several evenly arranged connection holes are opened on the rectangular frame 21 of the quick-release mesh plate 2 and the connection end with the steel frame 1. After the limiting bolt passes through the connection hole and the positioning pin hole 13, the quick-release mesh plate 2 is connected to the steel frame 1.

[0032] As a further description of the above embodiment, the hook 3 includes a rock-entry end 31 and a U-shaped hook head 32.

[0033] In this embodiment, the hook 3 is made of φ25 round steel bent into a U-shaped structure. The bottom is a U-shaped hook head 32 with a diameter of 50cm, and the tail has a rock-entry end 31 with a length of 1m. The rock-entry end 31 is inserted into the cave wall to provide a reliable connection to the platform through the cave wall and keep the platform stable. It has the characteristics of quick disassembly and recyclability.

[0034] Of course, the length of the rock entry end 31 is not limited to 1m. It can be adjusted according to the actual construction situation, as long as the operating platform is stably connected to the tunnel wall. For example, the length of the rock entry end 31 is 1 to 1.2m.

[0035] In summary, the assembly steps for the quick-release adjustable operating platform for small tunnels are as follows: 1. Drilling operation Select a suitable height on the tunnel wall for drilling. During drilling, strictly control the drilling depth, keeping it between 0.8m and 0.9m. This depth requirement has been verified through multiple trials and ensures the stability of the subsequent installation of hook 3, laying the foundation for the safe and reliable construction of the entire operating platform. 2. Hook 3 Installation After drilling is completed, insert the rock-entry end 31 of hook 3 into the drilled hole, ensuring an insertion depth of 0.8m to 0.9m; 3. Placement of steel frame 1 Place the pre-made steel frame 1 stably on the already installed hook 3, ensuring that the steel frame 1 and the hook 3 fit tightly and reliably, thus building a solid frame foundation for the entire operating platform. 4. Quick-release mesh panel 2 installation and positioning The quick-release mesh panels 2 are placed orderly on the steel frame 1 and positioned and connected using limit bolts. During installation, ensure that the connections between all components are tight, stable, and reliable, so that the entire operating platform forms a complete and robust structural system.

[0036] In summary, this utility model can flexibly adjust various parameters such as the platform's height, width, and angle according to different tunnel sizes, diverse construction techniques, and specific operational needs. This allows it to better adapt to complex and ever-changing construction environments, greatly improving the platform's applicability and versatility, enabling it to function in a wider range of construction scenarios. Therefore, this utility model effectively overcomes the various shortcomings of existing technologies and possesses high industrial application value.

[0037] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A small, quick-release, adjustable operating platform for tunnels, characterized in that: It includes two parallel adjustable steel frames (1), with each end of the steel frame (1) being hung on a hook (3), the hook (3) being inserted into the hole wall, and several quick-release mesh plates (2) arranged side by side being detachably connected between the two adjustable steel frames (1).

2. The small tunnel quick-release adjustable operating platform according to claim 1, characterized in that: The steel frame (1) includes a main load-bearing steel pipe (11), and both ends of the main load-bearing steel pipe (11) are fitted with adjusting steel pipes (12) in a clearance fit manner.

3. The small tunnel quick-release adjustable operating platform according to claim 2, characterized in that: The length of the main load-bearing steel pipe (11) is equal to the sum of the lengths of the two adjusting steel pipes (12).

4. The small tunnel quick-release adjustable operating platform according to claim 2, characterized in that: Both the main load-bearing steel pipe (11) and the adjusting steel pipe (12) are provided with a number of positioning pin holes (13) at equal intervals along their axial direction. Positioning pins can be inserted into the positioning pin holes (13). The suspended end of the adjusting steel pipe (12) is provided with a 250-350mm hole-free safety redundancy area (14).

5. The small tunnel quick-release adjustable operating platform according to claim 1, characterized in that: The quick-release mesh plate (2) includes a rectangular frame (21), the upper and lower ends of which are detachably connected to the steel frame (1), and the rectangular frame (21) is welded with a threaded steel mesh (22).

6. The small tunnel quick-release adjustable operating platform according to claim 5, characterized in that: The rectangular frame (21) has several evenly spaced connecting holes at its upper and lower ends along its axial direction.

7. The small tunnel quick-release adjustable operating platform according to claim 1, characterized in that: The hook (3) includes a rock-entry end (31) and a U-shaped hook head (32).

8. The small tunnel quick-release adjustable operating platform according to claim 7, characterized in that: The length of the rock-entry end (31) is 1 to 1.2 m, and the width of the U-shaped hook (32) is 50 cm.

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