Mine explosion-proof equipment box structure with enhanced anti-seismic performance

Abstract

The utility model discloses a kind of mine explosion-proof equipment box structures of enhanced anti-seismic performance, including box, box bottom is equipped with shock-absorbing support, box inner chamber is equipped with mounting support, beam is fixedly installed in the bottom of box inner chamber, between mounting support rear side face below and beam is fixedly connected by inclined strut frame, it is fixedly installed on the two side walls of box inner chamber and is equipped with gusset plate, gusset plate is triangular support structure, one side of gusset plate is fixedly connected with box side wall, the other side of gusset plate is fixedly connected with mounting support inner side face;First shock-absorbing pad is fixedly installed between inclined strut frame and mounting support, second shock-absorbing pad is fixedly installed between gusset plate and mounting support.The utility model overcomes the deficiency of prior art, by foundation shock-absorbing, structure reinforcement and equipment isolation triple mechanism synergistic effect, vibration impact energy is effectively absorbed, dispersed, inhibits box deformation and door body resonance, significantly improve the reliability, security and maintenance convenience of equipment under harsh working conditions.

Description

Technical Field

[0001] This utility model relates to the field of mining equipment technology, specifically to a mining explosion-proof equipment housing structure with enhanced seismic resistance. Background Technology

[0002] Mining explosion-proof equipment is a critical infrastructure for ensuring the safe and efficient operation of underground mining activities such as coal and metal mining. These devices are typically installed in dedicated explosion-proof enclosures, and their core function is to isolate potential electrical sparks or high temperatures generated by internal electrical components in harsh environments containing explosive gases (such as methane and coal dust), thereby preventing explosions in the external environment.

[0003] Mining equipment operating underground is subjected not only to structural vibrations transmitted from mining machinery and transport vehicles, but also to inevitable bumps and collisions during transportation and installation. Furthermore, in areas with frequent geological activity, it may be affected by low-frequency, high-energy rock pressure. Existing enclosures mostly employ rigid welding or bolted structural designs, which, while meeting basic explosion-proof strength requirements, suffer from low structural damping and poor absorption and mitigation capabilities against high-frequency vibrations and instantaneous impacts. This "hard-on-hard" force transmission path causes vibration energy to be directly transmitted to the precision electrical components (such as PLCs, sensors, and communication modules) inside the enclosure. Over long-term use, this can easily lead to loose electrical connections, component fatigue damage, parameter drift, and even functional failure, severely impacting the reliability and service life of the equipment. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a mining explosion-proof equipment enclosure structure with enhanced seismic resistance. It overcomes the deficiencies of existing technologies, is rationally designed, and effectively absorbs and disperses vibration impact energy through the synergistic effect of foundation vibration reduction, structural reinforcement, and equipment isolation mechanisms. This suppresses enclosure deformation and door resonance, significantly improving the reliability, safety, and ease of maintenance of the equipment under harsh working conditions.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A mine explosion-proof equipment enclosure structure with enhanced seismic resistance includes an enclosure, a shock-absorbing support fixedly installed at the bottom of the enclosure, an installation support fixedly installed in the inner cavity of the enclosure for fixing and supporting internal electrical equipment, a crossbeam fixedly installed at the bottom of the inner cavity of the enclosure, a diagonal brace fixedly connecting the lower rear side of the installation support to the crossbeam, and corner braces fixedly installed on both side walls of the inner cavity of the enclosure. The corner braces are triangular support structures, with one side of the corner brace fixedly connected to the side wall of the enclosure and the other side of the corner brace fixedly connected to the inner side of the installation support.

[0007] A first shock-absorbing pad is fixedly installed between the diagonal brace and the mounting support, and a second shock-absorbing pad is fixedly installed between the corner brace and the mounting support.

[0008] Preferably, the first and second shock-absorbing pads are made of rubber or polyurethane material.

[0009] Preferably, a triangular support plate is fixedly installed on the side of the housing, and the shock-absorbing support is detachably connected to the triangular support plate by screws.

[0010] Preferably, the front side of the enclosure is connected to a protective door via a quick-opening door structure.

[0011] Preferably, anti-loosening screws are symmetrically arranged at two opposite corners of the protective door, and the anti-loosening screws penetrate the protective door and are threadedly connected to the housing.

[0012] Preferably, a mounting bracket is fixedly installed on the inner side of the protective door, and the mounting bracket is used to install heavy electrical components.

[0013] This invention provides a mine explosion-proof equipment enclosure structure with enhanced seismic resistance, offering the following advantages: Through foundation vibration isolation of the damping supports, rigid support and energy transmission of the diagonal braces and corner braces, and local vibration decoupling of the first and second damping pads, a multi-level vibration energy dissipation path is formed, from low frequency to high frequency and from overall to local vibration. This effectively copes with the complex vibration and impact environment in mines, minimizing the vibration energy transmitted to the internal core electrical equipment. This significantly reduces damage caused by vibration, such as loosening of internal components, disconnection of wiring, parameter drift, and mechanical fatigue, thereby significantly improving the stability and reliability of equipment operation and extending its service life. Furthermore, the internal beams, diagonal braces, and corner braces together form a highly rigid internal support frame. This effectively distributes equipment loads and impact forces throughout the enclosure, avoiding stress concentration and significantly enhancing the enclosure's resistance to torsion, bending, and deformation. The first and second damping pads are used to flexibly fix the mounting bracket, thus providing a nearly static mounting platform for the core equipment. This is particularly beneficial for protecting high-precision sensors, control modules and communication equipment that are sensitive to vibration, reducing the failure rate and ensuring the accuracy of production and safety monitoring data. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in this utility model or the prior art, the accompanying drawings used in the description of this utility model or the prior art will be briefly introduced below.

[0015] Figure 1 A schematic diagram of the structure of this utility model;

[0016] Figure 2A cross-sectional structural diagram of this utility model;

[0017] Explanation of the labels in the diagram:

[0018] 1. Housing; 2. Vibration damping support; 3. Mounting support; 4. Crossbeam; 5. Diagonal brace; 6. Angle brace plate; 7. First vibration damping pad; 8. Second vibration damping pad; 9. Protective door; 10. Anti-loosening screw; 11. Mounting bracket; 12. Triangular support plate. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0020] Example 1, as Figure 1-2 As shown, a mine explosion-proof equipment enclosure structure with enhanced seismic resistance includes an enclosure 1, a shock-absorbing support 2 fixedly installed at the bottom of the enclosure 1, an installation support 3 fixedly installed in the inner cavity of the enclosure 1, the installation support 3 being used to fix and support the internal electrical equipment, a crossbeam 4 fixedly installed at the bottom of the inner cavity of the enclosure 1, the lower rear side of the installation support 3 being fixedly connected to the crossbeam 4 by a diagonal brace 5, and corner bracing plates 6 fixedly installed on both sides of the inner cavity of the enclosure 1, the corner bracing plates 6 having a triangular support structure, one side of the corner bracing plate 6 being fixedly connected to the side wall of the enclosure 1, and the other side of the corner bracing plate 6 being fixedly connected to the inner side of the installation support 3;

[0021] A first shock-absorbing pad 7 is fixedly installed between the diagonal brace 5 and the mounting support 3, and a second shock-absorbing pad 8 is fixedly installed between the corner brace 6 and the mounting support 3.

[0022] Working principle:

[0023] When the enclosure 1 is subjected to impacts from the external environment (such as transportation bumps and vibrations transmitted during equipment operation), the shock-absorbing support 2 set at the bottom of the enclosure acts as the first line of defense, absorbing most of the vertical vibration energy. This effectively blocks the vibration energy from being directly and rigidly transmitted to the main structure of the enclosure, providing a preliminary stable foundation for the entire system.

[0024] The diagonal bracing 5 and corner bracing 6 within the enclosure 1 form a multi-support structure, providing triangular stability support for the mounting support 3. This effectively transmits and disperses the forward and backward vibrations and impacts, as well as the lateral vibrations, from the inertial forces of the internal equipment onto the side walls and bottom beams 4 of the enclosure 1, further reducing local stress concentration and enhancing the deformation and vibration resistance of the mounting support 3. Simultaneously, the first damping pad 7 between the diagonal bracing 5 and the mounting support 3, and the second damping pad 8 between the corner bracing 6 and the mounting support 3, provide vibration decoupling and secondary filtering through their elastic damping action. While maintaining the overall shape of the enclosure, the rigid support structure absorbs and dissipates the mid-to-high frequency vibration energy transmitted by the support structure through the first and second damping pads 7 and 8. This significantly reduces the risk of structural resonance caused by vibration during electrical equipment operation, achieving precise isolation and protection of the internal equipment.

[0025] This invention utilizes the foundation vibration isolation of the damping support 2, the rigid support and energy transmission of the diagonal brace 5 and the corner brace 6, and the local vibration decoupling of the first damping pad 7 and the second damping pad 8 to form a multi-level vibration energy dissipation path from low frequency to high frequency and from overall to local. This composite anti-seismic mechanism can effectively cope with the complex vibration and impact environment in mines, minimizing the vibration energy transmitted to the internal core electrical equipment. This greatly reduces the loosening of internal components, wiring detachment, parameter drift, and mechanical fatigue damage caused by vibration, thereby significantly improving the stability and reliability of equipment operation and extending its service life. In addition, the crossbeam 4, diagonal brace 5, and corner brace 6 inside the housing together constitute a high-rigidity internal support frame. This frame effectively distributes the equipment load and impact force to the entire housing 1, avoiding stress concentration and significantly enhancing the housing's resistance to torsion, bending, and deformation. The first damping pad 7 and the second damping pad 8 are used to achieve flexible fixation of the mounting support, thereby providing a near-static mounting platform for the core equipment. This is particularly beneficial for protecting high-precision sensors, control modules and communication equipment that are sensitive to vibration, reducing the failure rate and ensuring the accuracy of production and safety monitoring data.

[0026] In Example 2, as a further preferred embodiment of Example 1, the first damping pad 7 and the second damping pad 8 are made of rubber or polyurethane. Both rubber and polyurethane are polymer elastomers with high damping coefficients. When vibration energy is transmitted to the first damping pad 7 and the second damping pad 8 through the diagonal brace 5 and the corner brace 6, intense internal friction is generated through the macromolecular chains inside the first damping pad 7 and the second damping pad 8, thereby irreversibly converting a large amount of mechanical kinetic energy (vibration energy) into heat energy and dissipating it into the environment. This achieves efficient energy dissipation. Furthermore, rubber (especially nitrile rubber and neoprene rubber) and polyurethane materials also possess excellent oil resistance, aging resistance, and fatigue resistance. This ensures that the first damping pad 7 and the second damping pad 8 can maintain their elasticity and damping performance for a long time in the harsh environment of the mine, without swelling and softening due to oil erosion, or rapidly aging and cracking due to long-term repeated stress cycles, thus ensuring the durability and stability of the seismic performance and extending the maintenance cycle and service life.

[0027] In Example 3, as a further preferred embodiment of Example 1, a triangular support plate 12 is fixedly installed on the side of the housing 1, and the shock absorber 2 is detachably connected to the triangular support plate 12 by screws. By fixing the triangular support plate 12 to the side of the housing, a localized, high-rigidity mounting platform is created, thereby effectively distributing the concentrated load borne by the shock absorber 2 to the side wall structure of the housing 1, thus avoiding problems such as housing deformation or cracking due to excessive local stress. Furthermore, the detachable connection between the shock absorber 2 and the triangular support plate by screws allows the shock absorber 2 to function as an independent, standardized, modular component. When a shock absorber aging, wears out, or is damaged due to accidental impact after long-term use, maintenance personnel do not need to perform complex cutting or welding operations; they can simply loosen the screws with tools to remove it and install a new shock absorber. This greatly shortens maintenance time and reduces the technical difficulty and cost of maintenance work.

[0028] In Example 4, as a further preferred embodiment of Example 1, a protective door 9 is connected to the front side of the enclosure 1 via a quick-opening door structure. The quick-opening door structure facilitates rapid opening and closing, making it convenient for inspection and maintenance of the equipment inside the enclosure.

[0029] In Example 5, as a further preferred embodiment of Example 4, anti-loosening screws 10 are symmetrically arranged at two diagonal corners of the protective door 9. The anti-loosening screws 10 penetrate the protective door 9 and are threadedly connected to the housing 1. By placing anti-loosening screws 10 at the diagonal positions of the protective door 9, a classic triangular force-bearing system is constructed between the protective door 9 and the door frame of the housing 1. This effectively enhances the overall rigidity of the protective door and significantly suppresses the "drumstick effect" (high-frequency vibration) and warping deformation that easily occur in the door panel under vibration or impact. Furthermore, by applying pre-tightening force in the diagonal direction, the seal between the protective door 9 and the housing 1 becomes more uniform and tight, effectively preventing screw loosening caused by vibration, and further improving the stability and reliability of the connection.

[0030] Example 6, as a further preferred embodiment of Example 4, traditional mining equipment enclosures typically concentrate all electrical components on the rear wall or bottom plate, resulting in cramped space, complex wiring, and concentrated heat dissipation. This embodiment addresses this by fixing a mounting bracket 11 to the inner side of the protective door 9. This fully utilizes the space inside the protective door 11, providing dedicated mounting locations for bulky or heavy components (such as large contactors, transformers, and power modules). This achieves a functional zoning layout within the enclosure 1, physically separating heavy components from precision control components (such as PLCs and sensors). This not only significantly alleviates the space pressure on the main mounting bracket 3, making the internal layout clearer and more rational, facilitating wiring and heat dissipation design, but also significantly improves the overall space utilization efficiency of the enclosure, providing more possibilities for equipment functional expansion.

[0031] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A mine explosion-proof equipment cabinet structure with enhanced seismic performance, characterized in that: Includes a housing (1), a shock-absorbing support (2) is fixedly installed at the bottom of the housing (1), an installation support (3) is fixedly installed in the inner cavity of the housing (1), the installation support (3) is used to fix and support the internal electrical equipment, a crossbeam (4) is fixedly installed at the bottom of the inner cavity of the housing (1), the lower rear side of the installation support (3) is fixedly connected to the crossbeam (4) by a diagonal brace (5), and corner braces (6) are fixedly installed on both sides of the inner cavity of the housing (1). The corner braces (6) have a triangular support structure, one side of the corner braces (6) is fixedly connected to the side wall of the housing (1), and the other side of the corner braces (6) is fixedly connected to the inner side of the installation support (3). A first shock-absorbing pad (7) is fixedly installed between the diagonal brace (5) and the mounting support (3), and a second shock-absorbing pad (8) is fixedly installed between the corner brace (6) and the mounting support (3).

2. The mine explosion-proof equipment cabinet structure with enhanced anti-seismic performance according to claim 1, characterized in that: The first damping pad (7) and the second damping pad (8) are made of rubber or polyurethane material.

3. The mine explosion-proof equipment cabinet structure with enhanced anti-seismic performance according to claim 1, characterized in that: A triangular support plate (12) is fixedly installed on the side of the box (1), and the shock-absorbing support (2) is detachably connected to the triangular support plate (12) by screws.

4. The mine explosion-proof equipment cabinet structure with enhanced anti-seismic performance according to claim 1, characterized in that: The front side of the box (1) is connected to a protective door (9) via a quick-opening door structure.

5. The mine explosion-proof equipment cabinet structure with enhanced seismic performance according to claim 4, characterized in that: Anti-loosening screws (10) are symmetrically arranged at two opposite corners of the protective door (9). The anti-loosening screws (10) penetrate the protective door (9) and are threadedly connected to the box body (1).

6. The mine explosion-proof equipment cabinet structure with enhanced seismic performance according to claim 4, characterized in that: The protective door (9) has a mounting bracket (11) fixedly installed on its inner side. The mounting bracket (11) is used to install heavy electrical components.

Images