A device for rapid support of flexible membrane bags for sealed walls in tunnels and alleyways

Abstract

This utility model discloses a quick-support device for flexible membrane bags used in sealed walls of tunnels, specifically relating to the field of fan blades. It includes a base frame, with two side frames fixedly connected to the inner side of the base frame. A central frame is fixedly connected to the left side of each of the two side frames. A T-shaped slider is slidably connected between the two side frames. A linkage belt is fixedly connected to the top of the central frame, with one end of the linkage belt away from the central frame fixedly connected to the T-shaped slider. A fixing rod is fixedly connected to the right side of the T-shaped slider. This utility model uses a hydraulic cylinder to drive a top support wheel to move up and down, which in turn drives the T-shaped slider to slide down via the linkage belt, thereby adjusting the height of the support frame. The angle of the support frame can be freely adjusted using the first, second, and third universal ball joints between the fixing rod and the lever arm. A cylinder drives a second fixing ring and a linkage rod to move, which in turn causes the support frame to open, thus preventing damage to the flexible membrane bag due to wrinkles.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine blade technology, and more specifically, to a device for quickly supporting a flexible membrane bag for a sealed wall connecting tunnels. Background Technology

[0002] Constructing airtight walls between tunnels or in abandoned areas is a cornerstone measure in the safety assurance system of mines (especially coal mines). It serves as the last physical line of defense to prevent the spread of catastrophic accidents (fire, gas, water inrush) and ensure the safety of lives. It also ensures the effective and economical operation of the mine ventilation system.

[0003] Optimizing the production environment is a key technological means and a mandatory measure to meet the requirements of national safety production regulations. Its inherent safety, significant effect and economy make it irreplaceable. Therefore, timely, standardized and high-quality establishment, inspection and maintenance of airtight walls is a core task that cannot be ignored in mine safety management. In the application of airtight walls, flexible membrane bags have become an important tool.

[0004] Common flexible membrane bag quick-support devices for sealed walls in tunnels and alleys can only support the flexible membrane bags, but lack the function of preventing damage from wrinkles. The thick adhesive material has its own stickiness and wrinkle memory effect, which makes it difficult for the bag to fully expand under its own weight. The layered and wrinkled flexible membrane bags are prone to sticking together under compression. The sudden increase in resistance during startup may cause local tearing or gas escape, ultimately resulting in problems with the expansion efficiency and quality of the flexible membrane bags.

[0005] In summary, to improve the unfolding efficiency and quality of flexible film bags, it is necessary to solve the problem of the flexible film bags being difficult to unfold quickly and fully, so that all parts of the flexible film bag can receive propulsion when it is stretched. Utility Model Content

[0006] The present invention provides a quick-support device for flexible membrane bags for airtight walls in tunnels and alleys. The problem to be solved is that the thick adhesive material has its own stickiness and wrinkle memory effect, which makes it difficult for the bag to fully expand under its own weight. The flexible membrane bags with layered wrinkles are prone to sticking together under compression. The sudden increase in resistance during startup may lead to local tearing or gas escape.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a device for quickly supporting a flexible membrane bag for a sealed wall connecting tunnels, comprising a base frame, two side frames fixedly connected to the inner side of the base frame, a central frame fixedly connected to the left side of the two side frames, a T-shaped slider slidably connected between the two side frames, a linkage belt fixedly connected to the top of the central frame, the end of the linkage belt away from the central frame being fixedly connected to the T-shaped slider, a fixing rod fixedly connected to the right side of the T-shaped slider, and a first universal ball joint rotatably connected to the front and rear sides of the fixing rod, the outer side of the first universal ball joint being fixedly connected to... The system includes lever arms, with a second universal joint rotatably connected to the end of each lever arm away from the first universal joint. A telescopic rod is fixedly connected to the outer side of the second universal joint, and a third universal joint rotatably connected to the end of the telescopic rod away from the second universal joint. An adjusting rod is fixedly connected to the outer side of the third universal joint, and a first fixing ring is fixedly connected to the outer side of the adjusting rod. Multiple support brackets are fixedly connected to the outer side of the first fixing ring. A lifting mechanism is provided on the bottom frame to control the lifting and lowering movement of the T-shaped slider. A retraction mechanism is provided on the adjusting rod to control the opening and closing movement of the support brackets.

[0008] In a preferred embodiment, the lifting mechanism includes a first driving component and a pushing component. The first driving component is used to provide driving force to the pushing component, and the pushing component is used to reduce the friction of the linkage belt during displacement.

[0009] In a preferred embodiment, the first drive assembly includes a support block fixedly connected to the left side of the base frame and a hydraulic cylinder fixedly connected to the top of the support block.

[0010] In a preferred embodiment, the jacking assembly includes a jacking wheel fixedly connected to the output end of the hydraulic cylinder, and a linkage belt is engaged in a limiting groove on the outer side of the jacking wheel.

[0011] In a preferred embodiment, the support mechanism includes a second drive component and a linkage component. The second drive component is used to provide driving force to the linkage component, and the linkage component is used to control the opening and closing movement of the support bracket.

[0012] In a preferred embodiment, the second drive assembly includes a cylinder fixedly connected to the end of the adjusting rod away from the third universal joint and a second retaining ring fixedly connected to the outside of the cylinder.

[0013] In a preferred embodiment, the linkage assembly includes a plurality of linkage rods rotatably connected to the outside of the second fixed ring, with one end of the linkage rod away from the second fixed ring rotatably connected to the support bracket.

[0014] In a preferred embodiment, two omnidirectional wheels are fixedly connected to the left side of the base frame, and two directional wheels are fixedly connected to the right side of the base frame.

[0015] The beneficial effects of this utility model are as follows:

[0016] This invention uses a hydraulic cylinder to achieve stepless height adjustment of the support frame, adapting to flexible film bags of different heights.

[0017] This invention uses a cross-shaped support frame to simultaneously expand all parts of the flexible film bag, avoiding damage caused by local wrinkles, thus ensuring that the flexible film bag is wrinkle-free and undamaged during the expansion process.

[0018] This utility model uses a flexible connection mechanism composed of multiple universal ball joints to allow arbitrary adjustment of the spatial angle of the support frame, enabling it to precisely adapt to the unfolding requirements of flexible film bags of different shapes. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the lifting mechanism of this utility model.

[0021] Figure 3 This is a schematic diagram of the T-shaped slider structure of this utility model.

[0022] Figure 4 This is a schematic diagram of the angle adjustment component of this utility model.

[0023] Figure 5 This is a schematic diagram of the support and retraction mechanism of this utility model.

[0024] The attached diagram is labeled as follows: 1. Base frame; 11. Side frame; 12. Middle frame; 13. T-shaped slider; 14. Linkage belt; 15. Fixed rod; 16. First universal ball joint; 17. Lever arm; 18. Second universal ball joint; 19. Telescopic rod; 20. Third universal ball joint; 21. Adjusting rod; 22. First fixing ring; 23. Support bracket; 24. Universal wheel; 25. Directional wheel; 311. Support block; 312. Hydraulic cylinder; 321. Top support wheel; 411. Cylinder; 412. Second fixing ring; 421. Linkage rod. Detailed Implementation

[0025] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0026] In the complex system of mine safety production, the construction of sealed walls in roadway connections and abandoned areas occupies an irreplaceable core position. Like a "safety barrier" for the mine, it provides a rigid physical isolation to build a solid defense against various disasters. For coal mines, the underground environment is characterized by high gas content, susceptibility to spontaneous combustion, and significant water hazards. The existence of sealed walls directly relates to the safety of workers and the sustainable operation of the mine. From a disaster prevention perspective, when a fire occurs underground, the sealed wall can quickly cut off the oxygen supply and curb the spread of the fire. In the face of gas outburst accidents, it can effectively prevent high-concentration gas from spreading to the work area, buying valuable time for gas extraction and concentration dilution. In the event of water inrush, the sturdy sealed wall can withstand the impact of groundwater and prevent the water hazard from expanding. This "last line of defense" attribute makes it an insurmountable physical barrier in the mine safety assurance system.

[0027] From the perspective of ventilation system optimization, the scientific setting of airtight walls is key to maintaining the stability of the mine ventilation network. Coal mine underground roadways are crisscrossed, and if abandoned areas are not sealed in time, a large number of ineffective air leakage channels will be formed, leading to a decrease in the efficiency of the main ventilation fan and an imbalance in air volume distribution. This not only increases energy consumption costs, but may also cause safety hazards such as gas accumulation due to insufficient local air volume. By establishing standardized airtight walls in connecting roadways and abandoned areas, the direction and flow of air can be precisely controlled to ensure that fresh air is delivered to the mining face as designed, while efficiently expelling polluted air, forming an economical and stable ventilation circulation system. According to statistics, reasonable airtight wall settings can reduce mine ventilation energy consumption by 15%-20%, significantly improving the safety and economy of the production environment.

[0028] In terms of regulatory compliance and safety management, the construction of sealed walls is a mandatory requirement of national safety production regulations. The "Coal Mine Safety Regulations" clearly stipulate that abandoned roadways must be sealed within a specified time, and the strength, airtightness, and other parameters of the sealed walls must meet strict standards. Behind this requirement is a profound understanding of the laws of mine safety management—the quality of sealed walls directly reflects the level of mine safety management, timely sealing of abandoned areas can eliminate safety blind spots; standardized construction techniques can ensure the durability of the sealing effect; regular inspection and maintenance can dynamically respond to challenges such as surrounding rock deformation and gas corrosion. Therefore, the construction of sealed walls is regarded as a "barometer" of mine safety management and an important indicator for measuring the implementation of corporate responsibility.

[0029] In the development of sealed wall technology, the application of flexible geomembrane bags represents a revolutionary breakthrough. Through material innovation and structural optimization, it has reshaped the construction and efficiency of sealed walls. Made from high-strength composite geomembranes, flexible geomembrane bags possess tear resistance, acid and alkali resistance, and aging resistance. Their structure can be flexibly customized according to the tunnel cross-section, adapting to different shaped construction spaces. Compared to traditional brick masonry or concrete pouring processes, flexible geomembrane bag sealed walls exhibit significant technological advantages: construction efficiency is greatly improved; sealed projects that traditionally require 5-7 days can be completed in 1-2 days using flexible geomembrane bag technology, making them particularly suitable for emergency rescue scenarios; the material is lightweight, reducing underground transportation pressure and lowering the labor intensity of workers; the bags can be filled with mine waste (such as coal gangue and fly ash), achieving resource recycling and aligning with the concept of green mine construction.

[0030] The core advantage of flexible membrane bag sealing walls lies in their superior airtightness and adaptability. After filling and compaction, the bag forms an integral sealed structure. The seams are welded using a hot-melt welding process, ensuring an air leakage rate of less than 0.5%, far exceeding the 1.5%-2% standard of traditional sealing walls. Under conditions of surrounding rock deformation, the flexible membrane bag has a certain degree of extensibility and can undergo slight deformation with roadway settlement without breaking, avoiding the defects of traditional rigid sealing walls that are prone to cracking. After applying flexible membrane bag sealing walls in a rockburst area, a coal mine with such walls remained intact after experiencing three major impacts, demonstrating its structural stability. In addition, observation holes and grouting pipes can be pre-set on the surface of the flexible membrane bag, facilitating the monitoring of parameters such as gas concentration and temperature in the sealed area. When air leakage is detected, sealing material can be replenished in time through the grouting pipes, achieving dynamic maintenance.

[0031] In practical applications, the construction process of flexible membrane bag sealed walls has formed a standardized procedure, covering key aspects such as preliminary preparation, bag installation, filling and compaction, and sealing treatment. Before construction, the roadway needs to be cleaned to remove loose debris and accumulated water, ensuring a flat base. The flexible membrane bags are assembled according to the roadway dimensions, and anchor bolts or steel straps are used to fix the bags to the roadway walls and roof to form a stable frame structure. During the filling process, a layered compaction method is used, with mechanical compaction every 30cm of filling to ensure a filling density of 1.6t / m³. 3 Finally, the gap between the bag surface and the tunnel wall is treated with grout to form a composite sealing layer. After this process was promoted and applied in many large coal mines in Shanxi, Shaanxi and Inner Mongolia, the average service life reached more than 5 years, which is 2-3 years longer than the traditional sealing wall, and the maintenance cost was greatly reduced.

[0032] The promotion of flexible membrane bag technology has also driven innovation in the management model of sealed walls. With the help of Internet of Things (IoT) technology, sensors can be embedded inside the flexible membrane bags to monitor wall stress, temperature, gas leakage and other data in real time. The data is transmitted to the ground monitoring center through the underground ring network to realize intelligent early warning. The "intelligent monitoring system for sealed walls with flexible membrane bags" established in a certain mining area has successfully warned of 12 potential gas leakage accidents, providing data support for safety decisions. At the same time, the modular design of flexible membrane bags facilitates rapid dismantling and reconstruction. When abandoned areas need to be reused, the bag material can be efficiently recycled to reduce construction waste, demonstrating the advantages of flexible management.

[0033] From the perspective of industry development trends, flexible membrane bag sealing wall technology is evolving towards high performance and multi-functionality. The development of new nano-coated flexible membrane materials has improved the temperature resistance of the bag to over 200℃, making it applicable to sealing high-temperature fire zones. The successful testing of biodegradable materials provides a new option for mining areas with stringent environmental protection requirements. In the future, combining 3D printing technology to achieve on-site customization of flexible membrane bags may further simplify the construction process. These innovations not only consolidate the sealing wall's position as the cornerstone of mine safety but also promote the transformation of mine safety technology towards green and intelligent development.

[0034] In conclusion, the construction of airtight walls in roadway connections and abandoned areas is a core component of the mine safety system. The application of flexible membrane bag technology provides an efficient, reliable, and economical solution for this process. From physical barriers for disaster prevention and control to optimization of ventilation systems, from mandatory regulatory compliance requirements to key safety management indicators, the multiple values ​​of airtight walls are fully realized with the support of flexible membrane bag technology. As the requirements for mine safety production continue to increase, flexible membrane bag airtight walls will undoubtedly play a role in a wider range of scenarios, providing a solid guarantee for building inherently safe mines and becoming an important technological milestone in the history of mine safety development.

[0035] Refer to the instruction manual appendix Figures 1 to 5A device for quickly supporting a flexible membrane bag for a sealed wall in a tunnel connection includes a base frame 1. Two side frames 11 are fixedly connected to the inner side of the base frame 1. A central frame 12 is fixedly connected to the left side of the two side frames 11. A T-shaped slider 13 is slidably connected between the two side frames 11. A linkage belt 14 is fixedly connected to the top of the central frame 12. One end of the linkage belt 14 away from the central frame 12 is fixedly connected to the T-shaped slider 13. A fixing rod 15 is fixedly connected to the right side of the T-shaped slider 13. First universal ball joints 16 are rotatably connected to the front and rear sides of the fixing rod 15. Force arms 17 are fixedly connected to the outer sides of the first universal ball joints 16. Two force arms 17 are located at... A second universal ball joint 18 is rotatably connected to one end of the first universal ball joint 16. A telescopic rod 19 is fixedly connected to the outer side of the second universal ball joint 18. A third universal ball joint 20 is rotatably connected to the end of the telescopic rod 19 away from the second universal ball joint 18. An adjusting rod 21 is fixedly connected to the outer side of the third universal ball joint 20. A first fixing ring 22 is fixedly connected to the outer side of the adjusting rod 21. Multiple supporting brackets 23 are fixedly connected to the outer side of the first fixing ring 22. A lifting mechanism is provided on the bottom frame 1. The lifting mechanism is used to control the lifting and lowering movement of the T-shaped slider 13. A retraction mechanism is provided on the adjusting rod 21. The retraction mechanism is used to control the opening and closing movement of the supporting brackets 23.

[0036] It should be noted that the linkage belt 14 has a certain degree of elasticity, and the telescopic rod 19 can retract in sections. There are two retractable sections on the main support, which can be used in roadways at different heights.

[0037] Refer to the instruction manual appendix Figures 1 to 3 The lifting mechanism includes a first drive assembly and a pushing assembly. The first drive assembly is used to provide driving force to the pushing assembly, and the pushing assembly is used to reduce the friction of the linkage belt 14 during displacement.

[0038] It should be noted that a limiting groove with the same size as the linkage belt 14 is provided on the outer side of the top support wheel 321, and a part of the linkage belt 14 is inserted into the limiting groove on the outer side of the top support wheel 321.

[0039] Refer to the instruction manual appendix Figure 2 The first drive assembly includes a support block 311 fixedly connected to the left side of the bottom frame 1 and a hydraulic cylinder 312 fixedly connected to the top of the support block 311.

[0040] It should be noted that the hydraulic cylinder 312 drives the top support wheel 321 to move upward, and the top support wheel 321 pushes the linkage belt 14, which in turn drives the T-shaped slider 13 to slide upward along the two side frames 11.

[0041] Refer to the instruction manual appendix Figure 2 The jacking assembly includes a jacking wheel 321 fixedly connected to the output end of the hydraulic cylinder 312, and a linkage belt 14 inserted into a limiting groove on the outside of the jacking wheel 321.

[0042] It should be noted that when the top support wheel 321 pushes the linkage belt 14, the linkage belt 14 will drive the top support wheel 321 to rotate, thereby reducing the friction force on the linkage belt 14.

[0043] Refer to the instruction manual appendix Figures 4 to 5 The support mechanism includes a second drive component and a linkage component. The second drive component is used to provide driving force to the linkage component, and the linkage component is used to control the opening and closing movement of the support bracket 23.

[0044] It should be noted that the support brackets 23 are distributed in a star-shaped pattern, which can provide quick support while ensuring the rigidity of the support.

[0045] Refer to the instruction manual appendix Figure 5 The second drive assembly includes a cylinder 411 fixedly connected to one end of the adjusting rod 21 away from the third universal ball joint 20 and a second fixing ring 412 fixedly connected to the outside of the cylinder 411.

[0046] It should be noted that the extension and retraction of the cylinder 411 drives the second fixed ring 412 to move, and the second fixed ring 412 will drive the linkage rod 421 to move during the movement.

[0047] Refer to the instruction manual appendix Figure 5 The linkage assembly includes multiple linkage rods 421 rotatably connected to the outside of the second fixed ring 412, and the end of the linkage rod 421 away from the second fixed ring 412 is rotatably connected to the support bracket 23.

[0048] It should be noted that when the linkage rod 421 moves, it simultaneously drives the support bracket 23 to open or close, thereby expanding the flexible membrane bag.

[0049] Refer to the instruction manual appendix Figure 2 Two omnidirectional wheels 24 are fixedly connected to the left side of the bottom frame 1, and two directional wheels 25 are fixedly connected to the right side of the bottom frame 1.

[0050] It should be noted that the combination of the omnidirectional wheels 24 and the fixed wheels 25 enables the device to move easily, while the omnidirectional wheels 24 facilitate the device to turn.

[0051] Working principle: First, the hydraulic cylinder 312 drives the top support wheel 321 to move up and down. The top support wheel 321 drives the linkage belt 14, which in turn drives the T-shaped slider 13 to slide up and down along the two side frames 11, thereby adjusting the height of the support bracket 23. Then, the angle of the support bracket 23 can be freely adjusted by the first universal ball joint 16, the second universal ball joint 18, and the third universal ball joint 20 between the fixed rod 15 and the lever arm 17. After the angle of the support bracket 23 is adjusted, the retracted support bracket 23 is inserted into the flexible membrane bag. Then, the retraction of the cylinder 411 drives the second fixed ring 412 to move. During the movement of the second fixed ring 412, it drives the linkage rod 421 to move. When the linkage rod 421 moves, it simultaneously drives the support bracket 23 to open, thereby opening the flexible membrane bag.

[0052] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A device for rapidly supporting a flexible membrane bag for a sealed wall connecting tunnels, characterized in that: The system includes a base frame (1), with two side frames (11) fixedly connected to the inner side of the base frame (1). A middle frame (12) is fixedly connected to the left side of the two side frames (11). A T-shaped slider (13) is slidably connected between the two side frames (11). A linkage belt (14) is fixedly connected to the top of the middle frame (12). One end of the linkage belt (14) away from the middle frame (12) is fixedly connected to the T-shaped slider (13). A fixing rod (15) is fixedly connected to the right side of the T-shaped slider (13). A first universal ball joint (16) is rotatably connected to the front and rear sides of the fixing rod (15). A lever arm (17) is fixedly connected to the outer side of the first universal ball joint (16). Two lever arms (17) are located away from the first universal ball joint (12). 6) One end is rotatably connected to a second universal ball joint (18), and a telescopic rod (19) is fixedly connected to the outside of the second universal ball joint (18). The end of the telescopic rod (19) away from the second universal ball joint (18) is rotatably connected to a third universal ball joint (20). An adjusting rod (21) is fixedly connected to the outside of the third universal ball joint (20). A first fixing ring (22) is fixedly connected to the outside of the adjusting rod (21). Multiple supporting brackets (23) are fixedly connected to the outside of the first fixing ring (22). A lifting mechanism is provided on the bottom frame (1). The lifting mechanism is used to control the lifting and lowering movement of the T-shaped slider (13). A support and retraction mechanism is provided on the adjusting rod (21). The support and retraction mechanism is used to control the opening and closing movement of the supporting brackets (23).

2. The device for rapid support of flexible membrane bags for sealed walls in tunnels according to claim 1, characterized in that: The lifting mechanism includes a first drive assembly and a push assembly. The first drive assembly is used to provide driving force to the push assembly, and the push assembly is used to reduce the friction of the linkage belt (14) during displacement.

3. The device for rapid support of flexible membrane bags for sealed walls in tunnels according to claim 2, characterized in that: The first drive assembly includes a support block (311) fixedly connected to the left side of the base frame (1) and a hydraulic cylinder (312) fixedly connected to the top of the support block (311).

4. The device for rapid support of flexible membrane bags for sealed walls in tunnels according to claim 3, characterized in that: The jacking assembly includes a jacking wheel (321) fixedly connected to the output end of the hydraulic cylinder (312), and a linkage belt (14) is inserted into a limiting groove on the outside of the jacking wheel (321).

5. The device for rapid support of flexible membrane bags for sealed walls in tunnels according to claim 1, characterized in that: The support mechanism includes a second drive component and a linkage component. The second drive component is used to provide driving force to the linkage component, and the linkage component is used to control the opening and closing movement of the support bracket (23).

6. The device for rapid support of flexible membrane bags for sealed walls in tunnels according to claim 5, characterized in that: The second drive assembly includes a cylinder (411) fixedly connected to the end of the adjusting rod (21) away from the third universal ball joint (20) and a second retaining ring (412) fixedly connected to the outside of the cylinder (411).

7. The device for rapid support of flexible membrane bags for sealed walls in tunnel connections according to claim 6, characterized in that: The linkage assembly includes multiple linkage rods (421) rotatably connected to the outside of the second fixed ring (412), and the end of the linkage rod (421) away from the second fixed ring (412) is rotatably connected to the support bracket (23).

8. The device for rapid support of flexible membrane bags for sealed walls in tunnels according to claim 1, characterized in that: Two omnidirectional wheels (24) are fixedly connected to the left side of the bottom frame (1), and two directional wheels (25) are fixedly connected to the right side of the bottom frame (1).

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