Development Trends in Heavy Mining Machinery
Release time:
2019-06-26
3.1 Digitalization 3.1.1 Digitalization of Mining Machinery Product Development Currently, the development of mining machinery products is trending toward digitalization, parallelization, integration, and knowledge-based approaches. Among these trends, digital technology has become the core technology for achieving rapid innovation and development. The fundamental concept behind the digitalization of product development is to use digital methods to quantitatively represent, store, and control various types of information generated throughout the product development process—including graphics, data, knowledge, and skills—thereby enabling globally optimized operations aimed at rapid market responsiveness and innovative product development. In addition to traditional computer-aided design and manufacturing technologies such as CAD/CAE/CAPP/CAM,
3.1 Digitalization
3.1.1 Digitalization of Mining Machinery Product Development
Currently, the development of mining machinery products is trending toward digitalization, parallelization, integration, and knowledge-based approaches. Among these trends, digitalization has become the core technology for achieving rapid innovation and development. The fundamental concept behind the digitalization of product development is to use digital technologies to quantitatively represent, store, and control various types of information generated throughout the product development process—including graphics, data, knowledge, and skills—thereby enabling global optimization aimed at rapid market responsiveness and innovative product development. In addition to traditional computer-aided design and manufacturing technologies such as CAD, CAE, CAPP, and CAM, digital technologies that support rapid product development also include digital modeling and simulation, digital prototypes and virtual manufacturing, knowledge-based design techniques and design repositories, and web-based collaborative product design.
A key feature of digitalization in product development is the predictability of both the product development process and product performance. The purpose of digital simulation of manufacturing processes is to leverage computational models grounded in physics and mathematics, as well as computer-based virtual experiments, to reveal the intrinsic mechanisms underlying manufacturing processes, acquire valuable knowledge, and enable autonomous design of manufacturing equipment. This approach allows for predictive and optimized control throughout the entire lifecycle of a product—from manufacturing and assembly all the way to its end-of-life stage. The main components include: 1. Design-process simulation, encompassing shape simulation, assembly simulation, kinematic simulation, dynamic simulation, and multidisciplinary integrated simulation; 2. Manufacturing-process simulation, covering cutting-process simulation, welding-process simulation, stamping-process simulation, and casting-process simulation; 3. Production-process simulation, which involves establishing static and dynamic models of manufacturing systems to accurately predict technical feasibility, machining costs, process quality, and production cycle times.
3.1.2 Digitalization of Enterprise Collaboration
Network technologies, epitomized by the Internet, enable the circulation and integration of information and knowledge across all stages of design and manufacturing based on digital representations. As a result, resources from geographically dispersed enterprises can be shared, making it possible to achieve modularity, decentralization, and flattening of enterprise organizations. This also creates the conditions for users to participate actively in production, enabling supply chains and manufacturing enterprises to jointly ensure timely delivery and high product quality. Large-scale mining machinery and equipment are characterized by high technological content, substantial investment requirements, small production volumes, harsh working environments, and long research-and-development and testing cycles. Therefore, their development is well-suited to a globally distributed, networked collaborative model, which allows for rapid response to market demands, optimal global allocation of resources, and swift fulfillment of customers’ fundamental needs through virtual value chains that maximize customer value. In the future, mining machinery manufacturing systems will no longer be static combinations of individual enterprises and a limited number of long-term suppliers; rather, they will evolve into borderless, multi-enterprise, short-term, and dynamically optimized systems.
3.1.3 Digitalization of Mines
In recent years, geographic information systems have rapidly developed in many mines. These systems integrate geological exploration data, surveying data, geological ore-body models, the distribution of all mine tunnels and shafts, as well as various architectural designs and general site layouts on the surface. By presenting this information in a three-dimensional, stereoscopic format, they clearly illustrate the spatial relationships among ore bodies, tunnels, and buildings within the mine, providing an intuitive understanding of the mine’s spatial composition and structure—a foundation for the concept of the “digital mine.” The construction of digital mines is strongly supported by advanced technologies such as massive data storage, data mining, multi-dimensional visualization and virtual reality, fiber-optic communication, broadband computer networking, and a variety of new mining and beneficiation equipment along with related control and management systems. The functions of a digital mine include: 1. Production Management: Real-time dynamic queries on logistics, capital flow, personnel movement, and other aspects are enabled through the collection and generation of diverse data, facilitating scientific decision-making by management. Combined with global positioning systems, these systems support vehicle scheduling, precise positioning and guidance for equipment operations, and ground-based engineering surveys. 2. Production Monitoring and Control: This includes real-time monitoring of product quality, accurate weighing of electric shovel payloads, precise detection of bucket loading positions, diagnosis of equipment operating conditions, analysis of energy consumption, detection of deformation and displacement in open-pit slopes and tailings dams, as well as prevention and control measures against tailings dam disasters.
3.2 Ecologicalization
3.2.1 Green Design of Mining Machinery
Mining machinery is a major consumer of resources and a significant source of pollution. Faced with increasingly stringent resource and environmental constraints, closely integrating the 4R principles—reduce, reuse, recycle, and recover—into the entire product lifecycle design and management is an essential approach for reducing energy consumption and pollution and achieving a sustainable development strategy. Specific measures include: 1. Adopting design principles that emphasize long service life, low energy consumption, and lightweight construction. Extending product lifespans can reduce the volume of machinery produced and lower the amount of waste generated; reducing product energy consumption can minimize environmental pollution; and lightweighting and improving efficiency can decrease the consumption of materials and resources. 2. Whenever possible, using materials with low environmental impact and avoiding harmful substances such as fluorocarbons (in air conditioners), chlorine-containing rubbers, resins, and asbestos. This minimizes pollution during the disposal of end-of-life components and optimizes overall costs. From the initial design stage, mining machinery products should take into account ease of disassembly, low disposal costs, and minimal environmental impact. Components should be easily dismantled and readily crushed, and they should be suitable for incineration or recyclable as fuel. 3. Using materials and resources that can be recycled and reused; in particular, structural components should, whenever feasible, adopt large-scale modular designs that are easy to assemble and disassemble, made from non-toxic materials, thereby increasing the recyclability of mechanical materials. 4. Reducing vibration and noise levels throughout the entire machine to lessen its impact on the surrounding environment.
3.3 Humanization
In product design, mining machinery adheres to the “people-oriented” principle, taking into account the harmony among humans, machines, and the environment. It implements necessary technical measures for safety design, improves the working environment, reduces vibration and noise, and enhances operator comfort.
3.3.1 Safety
The safety of mining machinery is a guarantee for safe mine production and the safety of workers' lives. The safety characteristics of mining machinery should be described from two perspectives: first, the safety functions of the machinery itself; and second, the reliability of these corresponding safety functions. Whether underground in coal mines containing coal dust and flammable or explosive gases, or at mine shaft entrances, or in various metal and non-metal mines, only mining machinery equipped with fail-safe safety functions and possessing high safety reliability can ensure normal mine operations and prevent safety accidents. The specific safety functions of various types of mining machinery differ depending on the working environment. For example, in hoisting machines used underground in coal mines, the primary safety functions include explosion-proof protection, overspeed and overtravel protection, overload and overvoltage protection, and anti-fall protection. Mining vehicles are fitted with anti-rollover and anti-falling structures, as well as safety features such as operational status monitoring and computer control, to prevent operator errors.
3.3.2 Comfortability
By applying ergonomic design principles, we have improved the driver’s working environment, emphasizing the coordination between the driver and the operator interface to reduce fatigue and enhance operational efficiency. We’ve adopted user-friendly, electronically controlled technologies that require only minimal arm movements to precisely manipulate loads, while allowing drivers to operate all critical control components using just their fingertips—thus significantly easing the driver’s workload. The cab features a fully enclosed, thermally insulated, and soundproof structure, and the seats are equipped with an adjustable gas-oil suspension system. Additionally, we’ve incorporated a digital instrument panel with electronic monitoring functions and intuitive audio-visual alarm systems—all reflecting human-centered design concepts—to create a safe and comfortable working environment for operators.
3.3.3 Appearance Design
Pay attention to both the aesthetic appeal of the mining machinery’s exterior and the streamlined design of its body itself, achieving harmony between the machinery and its environment and providing visual beauty. The styling of mining machinery is not merely a matter of superficial appearance; rather, it is a comprehensive expression that integrates factors such as function, materials, structure, human-machine interaction, and manufacturing processes. When conducting styling design, on the one hand, we need to employ artistic techniques and aesthetic principles to ensure that products incorporating modern technologies possess an aesthetic appeal that meets people’s aesthetic expectations. On the other hand, in order to effectively maximize the functionality of the product, its structure and form must also become more rational and optimized.
In the 21st century, China has emerged as a global powerhouse in mining machinery manufacturing, drawing worldwide attention. However, we are not yet a true powerhouse in this field—currently, there are still relatively few high-end mining machinery products manufactured in China that boast independent intellectual property rights. By fostering independent innovation and developing mining machinery that is digitalized, intelligent, eco-friendly, and user-friendly, we can achieve breakthroughs in critical equipment and advanced complete sets of machinery, thereby making even greater contributions to our country’s economic development and social progress.
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