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Technical Visit to SDIC Caofeidian Port | Localization of Imported Hydraulic Couplings for Port Belt Conveyors at Guangdong Zhongxing Hydraulic Transmission and Propulsion Co., Ltd.

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2026-07-08 16:10

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The Guangdong Zhongxing Hydraulic Transmission Technology team visited the SDIC Caofeidian Port to conduct a specialized technical exchange. They carried out an on-site inspection of the belt conveyor’s BJ4 drive station equipment, addressed operational and maintenance issues related to the domestically replaced hydraulic couplings, and engaged in an in-depth discussion on a localization‑upgrade plan for the remaining imported couplings used in port handling equipment. By leveraging highly reliable hydraulic transmission products, they aim to help port equipment reduce costs and improve efficiency.

To ensure the continued implementation of the domestic‑upgrade project for port bulk‑material handling equipment, address on‑site operational challenges associated with hydraulic couplings, and advance the comprehensive replacement of imported drive systems, Guangdong Zhongxing Hydraulic Transmission Co., Ltd. assembled its senior management and core technical team to conduct an on‑site visit and hold an in‑depth technical exchange at China Investment Caofeidian Port Co., Ltd. The team inspected the operating conditions of the belt‑conveyor drive stations within the port area, engaged in face‑to‑face discussions with the port’s equipment‑management and maintenance‑technology leaders, clarified issues related to the use of currently deployed domestically produced couplings, and explored the feasibility of implementing domestic‑upgrade solutions for the remaining imported hydraulic couplings at the port.
As a major, specialized bulk‑cargo hub in China, Guotou Caofeidian Port boasts an extensive, long‑distance belt‑conveyor system. This visit comprised two key components: on‑site equipment inspection and a dedicated workshop in the conference room. At the BJ4 drive station within the port area, ZTE technical engineers collaborated with the port’s operations and maintenance team to conduct a thorough field assessment of the equipment. They meticulously examined the operating condition of the replaced ZTE hydraulic couplings, recording critical operational parameters such as temperature, vibration, and load. In response to practical questions raised by the maintenance staff—covering routine upkeep, operating‑condition optimization, and troubleshooting—the technical team provided standardized solutions tailored to the port’s heavy‑load conveying environment, refined daily maintenance protocols suited to the harsh, dusty conditions, and resolved a range of hands‑on challenges encountered during equipment use.
Following the on-site inspection, both parties moved to the company’s conference room for a specialized technical exchange. During the meeting, our technical team used a large display screen to present drawings of ZTE’s YOX and DX series torque‑limiting hydraulic couplings—custom‑designed for port belt conveyors—along with their hydraulic performance models, salt‑spray durability test reports, and case studies of retrofit projects implemented at major ports nationwide. Drawing on the actual equipment parameters from Caofeidian Port, the presentation highlighted the key advantages of domestically produced couplings over imported counterparts in terms of transmission efficiency, shock‑absorption and protection, service life, and procurement and maintenance costs.
During the exchange, the port equipment management team raised several key concerns regarding the port’s unrenovated imported drive equipment, including potential retrofitting options, shutdown‑based renovation timelines, power‑rating compatibility, and customized corrosion‑ and wear‑resistant solutions. Drawing on years of experience in implementing port projects, our team conducted a thorough feasibility analysis for the domestic substitution of imported couplings, addressing aspects such as equipment installation dimensional compatibility, on‑site phased renovation strategies without disrupting operations, custom‑designed corrosion‑resistant sealing systems, and overload safety protection. Based on this assessment, we developed a tailored technical roadmap specifically suited to the port’s belt conveyor drive stations.
The port’s technical director fully commended the on-site performance of ZTE hydraulic couplings and the company’s robust technical support capabilities. He noted that the domestically produced hydraulic couplings previously installed have effectively mitigated belt‑conveyor start‑up shocks, significantly reducing the frequency of damage to gearboxes and motors and leading to a marked decrease in equipment maintenance costs. At the same time, he acknowledged the advantages of domestic equipment—namely, rapid after-sales response and readily available inventory—and expressed anticipation that subsequent phased upgrades will complete the localization of all imported hydraulic couplings across the port, thereby comprehensively lowering overall equipment‑maintenance expenses.
As a high-tech enterprise with over six decades of experience in the research, development, and manufacturing of hydraulic transmissions, Guangdong Zhongxing Hydraulic Transmission has long been dedicated to heavy‑duty transmission applications in mining, port operations, metallurgy, and power generation. Specifically for belt conveyors operating under heavy‑load conditions, it has developed a specialized line of hydraulic couplings. These products feature optimized hydraulic flow paths, achieving a transmission efficiency exceeding 97%, while their flexible cushioning design reduces equipment start‑up shock by up to 60%. They are well suited to the harsh, high‑dust environments of ports and can withstand 24‑hour continuous operation. The complete unit incorporates a thickened, wear‑resistant housing and a multi‑stage dust‑proof sealing system, and can be custom‑designed to accommodate various port‑equipment dimensions. Moreover, they are fully compatible with the mounting interfaces of mainstream imported couplings, enabling direct replacement without requiring modifications to the base frame.
This on-site technical exchange at the Cao Feidian Port of SDIC marks an important step for ZTE in deepening its presence in the northern port market and advancing the domestic substitution of imported equipment. Moving forward, Guangdong ZTE Hydraulic Transmission will continue to focus on the needs of the port bulk‑material handling sector, iteratively refine its port‑specific hydraulic couplers, and further enhance its end-to-end, on‑site technical service system. By providing a one‑stop solution for the domestic retrofitting of imported transmission equipment, it aims to help major port enterprises nationwide achieve cost reduction, efficiency gains, and high‑quality development through independently controllable, reliable domestically produced transmission systems.

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