煤机装备供应链作为煤炭行业正常运转的重要保障，对其进行高效而合理的管控不仅是保证煤炭开采安全性与稳定性的前提，也是智慧矿山建设的重要基础。同时伴随着可持续发展理念深入人心，煤机再制造服务也发展为煤机装备供应链中不可忽视的重要流程，在确保煤机装备供应链高效自治的同时做好再制造煤机的可信溯源对提升供应链竞争力、保障再制造煤机装备可靠性具有重要意义。本文针对传统煤机供应链管理模式的弊端，提出一种基于区块链的煤机装备供应链管理系统研究，主要研究内容如下：

首先，通过对煤机装备供应链中各参与方的痛点问题与煤机装备的制造、再制造流程进行分析，开展了基于区块链的煤机装备供应链协同管理概念模型与平台业务设计，并对煤机装备再制造服务进行研究并建立了再制造煤机的区块链溯源框架。为解决煤机装备供应链中各个主体节点信誉流转效率差的问题构建了一套煤机供应链节点信誉动态评价方法，将节点信誉值进行量化，为后续的信息交互机制与系统研发提供了理论基础。

其次，针对传统区块链技术存在的系统存储性能差、数据上链混乱等固有特性，设计并构建基于主从多链结构的煤机装备供应链存储模型来对煤机供应链中数据进行分链管理，实现对煤机供应链的协同管理与不同主体间的数据隔离。同时为解决传统PBFT共识算法通信复杂度高、动态性差、节点数量有限导致的信息交互效率低的问题，以信誉评价模型为基础对PBFT共识算法进行改进，提出基于主从多链的MS-PBFT多通道优化共识算法，提升供应链信息交互效率与动态性，为数据的高效传递提供技术支撑。

最后，设计并实现了基于区块链的煤机装备供应链信息协同管理系统。结合供应链的实际业务需求，对系统的架构与功能模块进行了详细的设计，利用Hyperledger Fabric超级账本平台进行区块链网络搭建，使煤机供应链在具备了去中心化、信誉量化的同时提升了煤机再制造工艺和质量的可溯源性，在煤机装备供应链内部建立了一个互信互通、共享透明的高效管理平台。

As an important guarantee for the normal operation of the coal industry, efficient and reasonable control of the supply chain of coal machinery equipment is not only a prerequisite for ensuring the safety and stability of coal mining, but also an important basis for the construction of smart mines.  At the same time, with the concept of sustainable development gaining popularity, the remanufacturing service of coal machine has also developed into an important process that cannot be ignored in the supply chain of coal machine equipment.  It is of great significance to ensure the efficient autonomy of the supply chain of coal machine equipment while doing a good job in the reliable traceability of remanufacturing coal machine equipment to enhance the competitiveness of the supply chain and ensure the reliability of remanufacturing coal machine equipment.  Aiming at the drawbacks of traditional coal machinery supply chain management mode, this paper proposes a blockchain-based coal machinery supply chain management system. The main research contents are as follows:

First, by analyzing the pain points of each participant in the supply chain of coal machine equipment and the manufacturing and remanufacturing process of coal machine equipment, the conceptual model and platform business design of the supply chain collaborative management of coal machine equipment based on blockchain technology are carried out, and the remanufacturing service of coal machine equipment is studied and the blockchain traceability framework of remanufacturing coal machine is established. In order to solve the problem of poor trust flow efficiency of each main node in the supply chain of coal machinery equipment, a set of dynamic evaluation method of node reputation of coal machinery supply chain is constructed, and the node reputation value is quantified, which provides a theoretical basis for the subsequent information interaction mechanism and system research and development.

Then, in view of the inherent characteristics of traditional blockchain technology, such as poor system storage performance and chaotic data link, a storage model of coal equipment supply chain based on the master-slave multi-chain structure is designed and constructed to carry out data chain management in the coal equipment supply chain, so as to realize collaborative management of the coal equipment supply chain and data isolation between different entities.  At the same time, in order to solve the problems of low information interaction efficiency caused by high communication complexity, poor dynamics and limited number of nodes of traditional PBFT consensus algorithm, based on the reputation evaluation model, the PBFT consensus algorithm is improved, and MS-PBFT multi-channel optimization consensus algorithm based on master-slave multi-chain is proposed to improve the information interaction efficiency and dynamics of supply chain. Provide technical support for efficient transmission of data.

Lastly, design and implement the supply chain information cooperative management system of coal machinery equipment based on blockchain.  In combination with the actual business needs of the industrial chain, the architecture and functional modules of the system are designed in detail, and the blockchain network is built using Hyperledger Fabric platform, which enables the supply chain of coal machines to have decentralization and quantification of reputation, while improving the traceability of the remanufacturing process and quality of coal machines. An efficient management platform of mutual trust, mutual communication, sharing and transparency has been established within the supply chain of coal machinery equipment.

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