Modular mine maintenance workshop and method of installation

Abstract

The application discloses a kind of modularized mine maintenance workshop and installation method, belong to mine engineering machinery equipment maintenance facility technical field;The workshop includes: embedding in the prefabricated foundation of soil layer, U-shaped plate, quick release device, one layer box, two layer box, ceiling and tyre type hoisting equipment, each component is rigidly connected by quick release device or bolt, prefabricated foundation fills the filler with specific gravity greater than 4 tons / m³, box is built-in illumination and power system, ceiling is modularized steel structure plus pressure type plate structure, tyre type hoisting equipment is flexibly configured between box.Its installation method is that after prefabricated foundation filler landfill, U-shaped plate, one-two layer box, ceiling are sequentially installed, then modularization is combined and hoisting equipment is configured, box ruler is used to ensure accuracy when adjusting position.The application realizes workshop rapid erection, flexible combination and convenient recovery, low investment, stable structure, strong wind and snow resistance, maintenance complete, greatly improve operation efficiency and safety.

Description

Technical Field

[0001] This invention relates to the field of maintenance facilities for mining engineering machinery and equipment, and more specifically, to a modular mining maintenance workshop and its installation method. Background Technology

[0002] Hydraulic excavators, mining dump trucks and other engineering machinery are core equipment in mining, construction and earthwork operations. These types of equipment generally operate continuously in remote fields and harsh working conditions, and the industry has extremely high requirements for equipment uptime. In order to ensure the reliable performance of the equipment and improve the uptime, it is usually necessary to set up special maintenance facilities near the equipment operation area for daily maintenance, fault repair and other operations.

[0003] Currently, equipment maintenance operations in the mining area mainly utilize two types of facilities: steel structure maintenance workshops and open-air maintenance canopies. However, both of these facilities have significant technical shortcomings and are difficult to adapt to the actual needs of maintenance in the mining area. Steel structure maintenance workshops suffer from high investment costs, and their construction requires multiple cumbersome procedures such as foundation pouring and on-site steel structure erection, resulting in a long construction period. Furthermore, the dismantling and recycling of such workshops after the project is completed is difficult, making them unusable and extremely uneconomical. While open-air maintenance canopies have lower costs, their structural limitations and lack of professional maintenance equipment and supporting facilities result in low maintenance efficiency, difficulty in guaranteeing maintenance quality, and insufficient overall structural rigidity, leading to poor wind and snow load-bearing capacity. In the complex climatic environment of the mining area, these canopies pose serious safety hazards and have extremely low safety standards.

[0004] To address the shortcomings of existing technologies, developing a mining area maintenance facility that is low-investment, easy to construct, recyclable and reusable, structurally stable, and equipped with comprehensive maintenance support is key to solving the maintenance problems of mining engineering machinery and equipment. Summary of the Invention

[0005] The purpose of this invention is to provide a modular mine maintenance workshop and its installation method, which solves the technical problems of high investment, long construction period, and difficult recycling of existing steel structure maintenance workshops, as well as low maintenance efficiency and poor safety of open-air maintenance canopies. It enables the rapid construction, flexible combination, and convenient recycling of mine maintenance workshops, while improving the structural stability and maintenance operation compatibility of the maintenance workshops.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A modular mine maintenance workshop includes: a prefabricated foundation, a U-shaped panel, a quick-release device, a first-floor box, a second-floor box, a roof, and tire-mounted lifting equipment; The precast foundation is buried in the soil layer and serves as the basic support structure for the entire maintenance workshop. The U-shaped plate is installed on the top of the precast foundation, and the U-shaped plate and the precast foundation are rigidly connected by a quick-release device, which serves as a transition connection and structural reinforcement. The first-floor enclosure is installed on the upper part of the U-shaped plate, and the U-shaped plate and the first-floor enclosure are connected by a quick-release device. A staircase structure is installed on the rear side of the first-floor enclosure to facilitate the movement of staff between the two floors. A doorway is opened on the front side of the first-floor enclosure to facilitate the entry and exit of personnel. The interior of the first-floor enclosure is equipped with a lighting system and a power system to provide basic energy and lighting support for maintenance operations. The second-layer box is installed on top of the first-layer box, and the second-layer box is connected to the first-layer box by a quick-release device. The second-layer box has a door opening on the rear side and is also equipped with a lighting system and a power system. It can be used as a maintenance material storage warehouse, on-site office area, etc., to realize the storage and management of materials nearby. The canopy is installed on the side of the second-floor enclosure and is connected to the second-floor enclosure by a quick-release device, providing shelter and protection for the maintenance work area below, and avoiding the impact of natural environment such as rain, snow and sun on the work. The tire-mounted crane is configured between two horizontally adjacent single-layer boxes, and can move flexibly between the boxes to lift workpieces, providing lifting assistance for maintenance operations and improving the efficiency of disassembly, assembly, and handling of large workpieces.

[0007] Furthermore, the precast foundation body is a conical structure, which can improve the contact stability between the precast foundation and the soil layer and reduce the risk of overturning. The bottom of the precast foundation is a movable support plate, which facilitates the emptying of the internal filler during recycling. Two filler holes are opened on the side of the precast foundation for filling the internal filler. Lifting ear plates are also welded on the side to facilitate lifting and handling by lifting equipment. Four M42 bolts are fixedly installed on the upper part of the precast foundation to provide a foundation for the connection with the U-shaped plate.

[0008] Furthermore, the prefabricated foundation is filled with filler material with a specific gravity greater than 4 tons / m³. The high specific gravity filler material can significantly increase the overall weight and load-bearing capacity of the prefabricated foundation, thereby ensuring the wind and snow load resistance of the entire modular maintenance workshop and improving structural stability.

[0009] Furthermore, the U-shaped plate is a component made of steel plate after welding and integral machining, with high structural strength and high connection accuracy; the bottom of the U-shaped plate has four Φ48 blind holes that are compatible with the M42 bolts on the upper part of the precast foundation. The U-shaped plate and the precast foundation are connected by bolts and nuts to achieve threaded connection, which is firm and easy to disassemble and assemble; the upper part of the U-shaped plate has four Φ26 blind holes, and the U-shaped plate is connected to the first-floor box through these Φ26 blind holes and quick-release devices, providing a stable support connection point for the first-floor box.

[0010] Furthermore, the quick-release device includes: a cylinder, a pull rod, and a steel ball; the outer diameter of the cylinder is Φ25, which is adapted to the Φ26 blind holes on each component; the steel ball is installed at the lower end of the pull rod, and a baffle is provided at the end of the pull rod away from the steel ball; the cylinder is fitted onto the pull rod, and its upper part is fixed to one side of the baffle; the upper part of the inner side of the cylinder is provided with an internal thread, and the lower part is a blind hole structure with evenly distributed slits around the circumference; the upper thread of the pull rod is adapted to the internal thread of the cylinder and achieves a threaded connection, and the upper thread and the lower thread of the pull rod are opposite threads; the steel ball is provided with an internal thread, and the steel ball is adapted to the lower thread of the pull rod and achieves a threaded connection; in use, by rotating the pull rod, the reverse thread structure drives the steel ball to press against the inner wall of the lower blind hole of the cylinder, opening the lower blind hole and achieving quick locking between the components; rotating the pull rod in the opposite direction can achieve quick release, greatly improving the disassembly and assembly efficiency of each component.

[0011] Furthermore, the first-floor enclosure is a welded steel structure enclosure with high structural rigidity and good load-bearing capacity; the staircase structure is fixed to the rear side of the first-floor enclosure by threaded connection, which is firm and easy to assemble and disassemble; a door is hinged at the door opening of the first-floor enclosure, which can realize the closed protection of the interior of the enclosure; the upper and lower perimeters of the first-floor enclosure are welded with assembly plates, and the assembly plates are provided with Φ26 blind holes, which are compatible with quick-release devices, providing a basis for the connection of the first-floor enclosure with the U-shaped plate and the second-floor enclosure.

[0012] Furthermore, the mounting plate on the lower side of the first-layer box is aligned with the Φ26 blind hole at the upper end of the U-shaped plate, and the two are rigidly connected by a quick-release device to ensure the connection stability between the first-layer box and the U-shaped plate and avoid structural shaking during operation.

[0013] Furthermore, the second-layer enclosure is a welded steel structure enclosure, which is compatible with the structure and has the same strength as the first-layer enclosure; a second door is hinged at the door opening of the second-layer enclosure to achieve internal sealing and protection; assembly plates are welded to the upper and lower perimeters of the second-layer enclosure, and Φ26 blind holes are opened on the assembly plates, which are compatible with quick-release devices, providing a basis for the connection between the second-layer enclosure and the first-layer enclosure and the roof.

[0014] Furthermore, the canopy includes: a steel structure support and a profiled sheet. The steel structure support is a modular assembly structure that can be flexibly combined according to the length of the maintenance workshop, and is easy to assemble and disassemble. The profiled sheet (602) covers the outside of the steel structure support, and the profiled sheet and the steel structure support are connected by rivets, which are firm and have good waterproof and snowproof effects. The steel structure support and the assembly plate on the upper side of the second-layer box are rigidly connected by a quick-release device to ensure the structural stability of the canopy and resist the impact of strong winds and blizzards.

[0015] An installation method for a modular mine maintenance workshop, applied to the aforementioned modular mine maintenance workshop, includes the following steps: S1. Precast Foundation Filling and Installation: Filler with a specific gravity greater than 4 tons / m³ is filled into the precast foundation through the filling holes on the side of the precast foundation. After compaction, the precast foundation is lifted and placed in the pit pre-excavated in the mine maintenance area by hooking the lifting lugs on the side of the precast foundation with external lifting equipment. The dimensions are measured with a measuring tape, and the horizontal position and spacing of the precast foundation are adjusted to ensure the relative dimensional accuracy of adjacent precast foundations. After adjustment, the precast foundation is backfilled. During the backfilling process, four M42 bolts on the upper part of the precast foundation are left exposed to prepare for the subsequent connection with the U-shaped plate. S2. U-shaped plate installation: Lift the U-shaped plate using external lifting equipment, align the Φ48 blind hole at the bottom of the U-shaped plate with the M42 bolt at the top of the precast foundation and fit it in, measure the size again with a measuring tape, adjust the position of the U-shaped plate to ensure that the relative size of adjacent U-shaped plates is appropriate, after adjustment, tighten the M42 nut to lock and fix the U-shaped plate to the precast foundation. S3. First-floor enclosure installation: The first-floor enclosure is lifted by external lifting equipment and slowly lowered to the top of the U-shaped plate. The Φ26 blind hole on the lower side of the first-floor enclosure is precisely aligned with the Φ26 blind hole on the top of the U-shaped plate. The quick-release device is inserted into the aligned blind hole, and the pull rod is rotated to connect and fix the two. Then, the stair structure is threaded to the threaded connection point on the back of the first-floor enclosure to complete the fixation of the stair structure. S4. Installation of the second-layer enclosure: The second-layer enclosure is lifted by external lifting equipment and lowered to the top of the first-layer enclosure. The Φ26 blind hole on the lower side of the second-layer enclosure is precisely aligned with the Φ26 blind hole on the upper side of the first-layer enclosure. The quick-release device is inserted into the blind hole and locked to achieve the connection and fixation between the second-layer enclosure and the first-layer enclosure. S5. Roof Installation: The roof is lifted and lowered to the upper side of the second-floor box using external lifting equipment. The assembly holes of the bottom steel structure support of the roof are precisely aligned with the Φ26 blind holes of the upper assembly plate of the second-floor box. The quick-release device is inserted and locked to achieve a rigid connection between the roof and the second-floor box. S6. Modular Assembly: Repeat steps S1-S5. Based on the actual needs of mine maintenance operations, arrange multiple sets of prefabricated foundations, U-shaped plates, first-floor boxes, second-floor boxes, and roofs at equal intervals and install them in sequence to form modular mine maintenance workshops of different lengths. Finally, place tire-mounted cranes between adjacent first-floor boxes to complete the installation of the entire modular mine maintenance workshop.

[0016] The beneficial effects of this invention are: 1) High economic efficiency and recyclable: The entire maintenance workshop adopts a fully modular structure design. All components are connected by quick-release devices or bolts, eliminating the need for on-site casting and welding. The investment cost is far lower than that of traditional steel structure maintenance workshops. Moreover, after the project is completed, it can be quickly disassembled in reverse order of installation. All components can be recycled and reused in other projects, which greatly improves the utilization rate of the facilities and reduces the overall cost of use. 2) Convenient assembly and short construction period: All components are prefabricated in the factory. On-site assembly can be completed by using lifting equipment and quick disassembly device. There are no complicated construction procedures. Moreover, it can be flexibly combined into maintenance workshops of different lengths according to actual needs, which greatly shortens the construction period and can quickly adapt to the construction period requirements of mining projects. 3) Stable structure and high safety: The precast foundation is filled with filler with a specific gravity greater than 4 tons / m³, which has a strong compressive strength. All components are rigidly connected by quick-release devices, which significantly improves the wind and snow load resistance of the overall structure. At the same time, it eliminates the simple structure of open-air maintenance canopies, providing a closed and stable working environment for maintenance operations and completely solving the safety hazards of existing facilities. 4) Complete supporting facilities and high maintenance efficiency: The first and second floor enclosures are equipped with lighting and power systems to provide continuous energy support for maintenance operations. The enclosures can also be used as material warehouses and office areas to achieve local storage and management of maintenance materials. At the same time, tire-mounted cranes are provided, which can move flexibly between various work areas to provide lifting assistance for the disassembly, assembly and transportation of large workpieces, which greatly improves the efficiency and quality of maintenance operations for mining equipment. Attached Figure Description

[0017] Figure 1 is a front view of the modular maintenance workshop assembly of the present invention; Figure 2 is a rear view of the modular maintenance workshop assembly of the present invention; Figure 3 is a schematic diagram of the overall structure of the prefabricated foundation of the present invention; Figure 4 is Figure 3 A partially enlarged structural diagram; Figure 5 is a schematic diagram of the open structure of the movable support plate of the prefabricated foundation of the present invention; Figure 6 is a schematic diagram of the structure of the U-shaped plate of the present invention; Figure 7 is a schematic diagram of the overall structure of the quick-release device of the present invention; Figure 8 is a schematic diagram of the assembly structure of the cylinder and the pull rod in the quick-release device of the present invention; Figure 9 is a schematic diagram of the installation structure of the quick-release device of the present invention; Figure 10 is a schematic diagram of the structure of the first-layer box of the present invention; Figure 11 is a schematic diagram of the structure of the two-layer box of the present invention; Figure 12 is a schematic diagram of the structure of the canopy of the present invention; Figure 13 is a flowchart illustrating the modular mine maintenance workshop installation method of the present invention; In the diagram: 100, Precast foundation; 101, Movable support plate; 102, Hinge pin sleeve; 103, Fixing bolt; 104, Fixing pin shaft; 105, L-shaped pin sleeve; 106, Support rod; 200, U-shaped plate; 300, Quick-release device; 301, Column; 302, Tie rod; 303, Steel ball; 400, First floor box; 401, Staircase structure; 402, Door 1; 403, Assembly plate; 500, Second floor box; 501, Door 2; 502, Assembly plate; 600, Ceiling; 601, Steel structure support; 602, Profiled sheet; 700, Tire-mounted lifting equipment; 800, Workpiece; 900, Soil layer. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of the invention.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention.

[0020] This embodiment provides a modular mine maintenance workshop and its installation method. The overall structure of the maintenance workshop is as follows: Figure 1 , Figure 2 As shown, it includes: a precast foundation 100, a U-shaped slab 200, a quick-release device 300, a first-floor box 400, a second-floor box 500, a roof 600, and a tire-mounted lifting device 700. The specific structure and connection method of each component are as follows: Precast foundation 100: such as Figure 3 , Figure 4 , Figure 5 As shown, the main body is a conical structure welded from steel plates, with a movable support plate 101 at the bottom. It is locked by a pin during use and the internal filler can be poured out by opening the pin during recycling. There are two filler holes on the side for filling with iron ore filler with a specific gravity of 5 tons / m³. There are two lifting lugs welded on the side for easy lifting. Four M42 bolts are welded and fixed on the upper part, buried in the soil layer 900, with only the bolts exposed.

[0021] The movable support plate 101 is hinged to the main body on one side via a hinge pin sleeve 102 and a fixing bolt 103, allowing the movable support plate 101 to rotate around the fixing bolt 103. After locking, the fixing bolt 103 and the hinge pin sleeve 102 have a certain gap, allowing the movable support plate 101 to rotate around the fixing bolt 103. The main body is also provided with a 7-shaped pin sleeve 105, which is rotatably installed on the main body via a fixing pin shaft 104. By rotating the 7-shaped pin sleeve 105 around the fixing pin shaft 104, the movable support plate 101 can be fixed. One end of the fixing pin shaft 104 is fixed to the main body, and the other end has a fixing hole. The 7-shaped pin sleeve 105 is limited by a pin to prevent it from sliding off the fixing pin shaft 104. There is a gap between the 7-shaped pin sleeve 105 and the fixing pin shaft 104, allowing the 7-shaped pin sleeve 105 to rotate around the fixing pin shaft 104.

[0022] The movable support plate 101 is provided with a support rod 106, which is fixedly welded to the lower end surface of the movable support plate 101. The two ends of the support rod 106 extend from both sides of the movable support plate 106 and cooperate with the 7-shaped pin sleeve 105 to realize the fixing and opening of the movable support plate 101.

[0023] In use, the 7-shaped pin sleeve 105 is lowered and locks the support rod 106 on the movable support plate 101. After the filler is filled through the two holes on the conical structure, it applies gravity to the movable support plate 101. The movable support plate 101 applies force to the 7-shaped pin sleeve 105, thereby achieving a firm lock on the 7-shaped pin sleeve 105. When retracting, the 7-shaped pin sleeve 105 is rotated at a certain angle, and the movable support plate 101 rotates around the fixing bolt 103. The movable support plate 101 opens, and the filler is poured out.

[0024] There are two support rods 106 and four corresponding 7-shaped pin sleeves 105, with each support rod 106 corresponding to two 7-shaped pin sleeves 105.

[0025] U-shaped plate 200: such as Figure 6 As shown, the U-shaped component is integrally machined after welding steel plates. There are four Φ48 blind holes at the bottom, which are adapted to the M42 bolts of the prefabricated foundation 100 and locked in place by M42 nuts. There are four Φ26 blind holes at the top, which provide a foundation for connection with the first-floor box 400.

[0026] Quick-release device 300: such as Figure 7 , Figure 8 , Figure 9As shown, the device includes: a cylinder 301, a pull rod 302, and a steel ball 303. The cylinder 301 has an outer diameter of Φ25, an internal thread on the upper part of its inner side, and a blind hole structure with evenly distributed slits around its circumference at the lower part. The pull rod 302 is provided with a baffle, and the pull rod on one side of the baffle is provided with an upper thread and a lower thread, which are reverse threads. The steel ball is provided with an internal thread. The upper thread of the pull rod 302 is connected to the internal thread of the cylinder 301, and the end of the cylinder 301 is mounted on the baffle. The lower thread of the pull rod 302 is connected to the internal thread of the steel ball 303. By rotating the pull rod 302, the steel ball 303 can be controlled to move upward to expand the blind hole at the lower part of the cylinder 301 to achieve rapid locking, and move downward to exit from the blind hole at the lower part of the expanded cylinder 301 to achieve rapid release.

[0027] One-layer cabinet 400: such as Figure 10 As shown, it is a steel structure welded box body. The stair structure 401 is bolted to the rear side, and the door 402 is hinged to the front side. The interior is equipped with an LED lighting system and a 380V power interface. The upper and lower sides are welded with assembly plates 403. The assembly plates 403 have Φ26 blind holes. The lower assembly plate 403 is rigidly connected to the U-shaped plate 200 through a quick-release device 300.

[0028] Two-layer enclosure 500: such as Figure 11 As shown, it is a steel structure welded box, which is adapted to the size of the first-floor box 400. The second door 501 is hinged to the rear side. The interior is also equipped with an LED lighting system and a 380V power interface, and is used as a maintenance material warehouse. The upper and lower sides are welded with assembly plates 502. The assembly plates 502 have Φ26 blind holes. The lower assembly plate 502 is connected to the upper assembly plate 403 of the first-floor box 400 through a quick-release device 300.

[0029] Ceiling 600: such as Figure 12 As shown, it consists of a steel structure support 601 and a color steel profiled plate 602. The steel structure support 601 is a modular assembly structure, and the color steel profiled plate 602 is connected to the steel structure support 601 by rivets. The assembly holes at the bottom of the steel structure support 601 are aligned with the Φ26 blind holes of the upper assembly plate 502 of the second-layer box 500, and are rigidly connected by a quick-release device 300.

[0030] 700: A 5-ton tire-mounted crane is selected and configured in the working area between two adjacent single-layer boxes 400. It can move flexibly between the working areas and is used to lift workpieces such as tires of mining dump trucks and buckets of excavators 800.

[0031] The installation method of the modular mine maintenance workshop in this embodiment is as follows: Figure 13 As shown, it includes the following steps: S1. Precast Foundation Filling and Installation: Fill the iron ore filler through the side filling holes of the precast foundation 100 and compact it. Use a 25-ton truck crane to hook and lift the ear plates. Lift the precast foundation 100 and place it in the pit with an excavation depth of 1.5m. Use a 5m tape measure to measure and adjust the position to ensure that the distance between adjacent precast foundations 100 is 6m. After adjustment, fill the soil layer and compact it, leaving the upper M42 bolts exposed. S2. U-shaped plate installation: Use a 25-ton truck crane to lift the U-shaped plate 200, align the bottom Φ48 blind hole with the M42 bolt, use a measuring tape to adjust the level of the U-shaped plate 200, and tighten the M42 nut to secure it. S3. Installation of the first-floor box: Use a 25-ton truck crane to lift the first-floor box 400, align the Φ26 blind hole of the lower assembly plate 403 with the Φ26 blind hole of the upper part of the U-shaped plate 200, insert the quick-release device 300 and rotate the pull rod 302 to lock it, and thread the stair structure 401 to the rear side of the first-floor box 400 and lock it. S4. Installation of the second-layer box: Use a 25-ton truck crane to lift the second-layer box 500, align the Φ26 blind hole of the lower mounting plate 502 with the Φ26 blind hole of the upper mounting plate 403 of the first-layer box 400, insert the quick-release device 300 and lock it. S5. Ceiling installation: Use a 25-ton truck to lift the ceiling 600, align the bottom mounting hole of the steel structure bracket 601 with the Φ26 blind hole of the upper mounting plate 502 of the second-layer box 500, insert the quick-release device 300 and lock it. S6. Modular assembly: Repeat steps S1-S5 to install a total of 6 sets of prefabricated foundations 100 and supporting components, and arrange them at equal intervals to form a modular maintenance workshop with a total length of 30m. Finally, place the 5-ton tire-mounted crane 700 between the adjacent first-floor boxes 400 to complete the installation.

[0032] The modular mine maintenance workshop in this embodiment can be built in just 3 days, which is much shorter than the construction period of traditional steel structure maintenance workshops. After the project is completed, it can be completely disassembled in just 1 day, and all components can be recycled and reused. Actual tests have shown that the workshop can withstand the impact of a level 10 gale and a 50cm snow blizzard, demonstrating excellent structural stability. At the same time, the supporting power, lighting and lifting equipment improve the efficiency of mine equipment maintenance by more than 60%, and significantly ensure the quality of maintenance.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A modular mine maintenance workshop, characterized in that, include: Precast foundation (100), U-shaped plate (200), quick-release device (300), first-floor box (400), second-floor box (500) and roof (600); The U-shaped plate (200) is installed on the upper part of the precast foundation (100), and the U-shaped plate (200) and the precast foundation (100) are connected by a quick-release device (300); The first-layer box (400) is installed on the upper part of the U-shaped plate (200), and the U-shaped plate (200) and the first-layer box (400) are connected by a quick-release device (300); The second-layer box (500) is installed on the upper part of the first-layer box (400), and the second-layer box (500) and the first-layer box (400) are connected by a quick-release device (300); The canopy (600) is connected to the top of the second-layer box (500), and the canopy (600) and the second-layer box (500) are connected by a quick-release device (300).

2. A modular mine maintenance workshop according to claim 1, characterized in that, The prefabricated foundation (100) is a hollow conical structure. The bottom of the prefabricated foundation (100) is a movable support plate. Two filling holes are opened on the side and lifting ear plates are welded on them. Bolts are fixed on the upper part.

3. A modular mine maintenance workshop according to claim 2, characterized in that, The precast foundation (100) is filled with filler material with a specific gravity greater than 4 tons / m³.

4. A modular mine maintenance workshop according to claim 2, characterized in that, The U-shaped plate (200) is a component made by integral machining after welding steel plates. The bottom of the U-shaped plate (200) is bolted to the precast foundation (100), and the upper part of the U-shaped plate (200) is connected to the first-floor box (400) through a quick-release device (300). The bottom of the U-shaped plate (200) is provided with blind holes that are compatible with the bolts on the upper part of the precast foundation (100). The U-shaped plate (200) and the precast foundation (100) are connected by bolts and nuts to achieve threaded connection. The upper part of the U-shaped plate (200) is provided with four blind holes, and the U-shaped plate (200) is connected to the first-floor box (400) through the blind holes and the quick-release device (300).

5. A modular mine maintenance workshop according to any one of claims 1-4, characterized in that, The quick-release device (300) includes: a cylinder (301), a pull rod (302), and a steel ball (303); the upper part of the inner side of the cylinder (301) is provided with an internal thread, the lower part is a blind hole structure with slits evenly distributed around the circumference, and the end of the pull rod (302) away from the steel ball (303) is provided with a baffle; the upper thread of the pull rod (302) is adapted to the internal thread of the cylinder (301) and achieves a threaded connection, and the upper thread and the lower thread of the pull rod (302) are opposite threads to each other; the steel ball (303) is provided with an internal thread, and the steel ball (303) is adapted to the lower thread of the pull rod (302) and achieves a threaded connection.

6. A modular mine maintenance workshop according to claim 1, characterized in that, The rear side of the first-floor box (400) is equipped with a stair structure, and the front side has a door opening. The interior of the first-floor box (400) is equipped with a lighting system and a power system. The second-floor box (500) has a doorway on the rear side, which corresponds to the staircase on the rear side of the first-floor box (400). The second-floor box (500) is equipped with a lighting system and a power system. The first-floor box (400) is a welded steel structure box. The stair structure is fixed to the rear side of the first-floor box (400) by threaded connection. A door (402) is hinged at the door opening of the first-floor box (400). Assembly plates (403) are welded around the upper and lower sides of the first-floor box (400). Blind holes are provided on the assembly plates (403), and the blind holes are compatible with the quick-release device (300). The second-layer box (500) is a welded steel structure box. A second door (501) is hinged at the door opening of the second-layer box (500). Assembly plates (502) are welded around the upper and lower sides of the second-layer box (500). Blind holes are provided on the assembly plates (502), and the blind holes are compatible with the quick-release device (300).

7. A modular mine maintenance workshop according to claim 1, characterized in that, The canopy (600) includes a steel structure support (601) and a profiled sheet (602). The steel structure support (601) is a modular assembly structure. The profiled sheet (602) covers the outside of the steel structure support (601), and the profiled sheet (602) and the steel structure support (601) are connected by rivets. The steel structure support (601) is rigidly connected to the upper side of the second-layer box (500) through a quick-release device (300).

8. A modular mine maintenance workshop according to claim 1, characterized in that, It also includes a tire-mounted crane (700), which is configured between two horizontally adjacent single-layer boxes (400) and can move flexibly between the boxes to lift workpieces (800).

9. An installation method for a modular mine maintenance workshop, characterized in that, The modular mine maintenance workshop described in any one of claims 1-8 comprises the following steps: S1. Filling and installation of precast foundation: Fill the precast foundation (100) with filler, lift the precast foundation (100) with a lifting device and place it in the pit excavated in the maintenance area of ​​the mining area. After adjusting the position of the precast foundation (100), bury it in the soil layer (900) and leave the bolts on the top of the precast foundation (100) exposed. S2. U-shaped plate installation: Lift the U-shaped plate (200) using a lifting device, align the U-shaped plate (200) with the precast foundation (100) and fit it in place. After adjusting the position of the U-shaped plate (200), tighten the nuts to lock and fix the U-shaped plate (200) and the precast foundation (100). S3, First-floor box installation: The first-floor box (400) is lifted by a lifting device, the first-floor box (400) is aligned with the U-shaped plate (200), and the two are connected and fixed by a quick-release device (300); S4. Installation of the second-layer box: The second-layer box (500) is lifted by the lifting equipment, the second-layer box (500) is aligned with the first-layer box (400), and the two are connected and fixed by the quick-release device (300); S5. Roof installation: The roof (600) is lifted by a lifting device, the bottom of the roof (600) is aligned with the second-floor box (500), and the two are connected and fixed by a quick-release device (300); S6. Modular combination: Repeat steps S1-S5, arrange and install multiple sets of prefabricated foundations (100), U-shaped plates (200), first-layer box (400), second-layer box (500) and roof (600) at equal intervals, and combine them to form modular mine maintenance workshops of different lengths.

10. The installation method of a modular mine maintenance workshop according to claim 9, characterized in that, When adjusting the positions of the precast foundation (100) and U-shaped plate (200) in steps S1 and S2, a measuring tape is used to measure the dimensions to ensure the relative dimensional accuracy of adjacent components.

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