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Troubled by complex tunnel support? Zhengxun Heavy Industry’s ZXP4517 wet spray rig offers a “precise and tailored solution.”
Release time:
2026-01-22
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Summary:
In complex tunnel construction, support operations must not only accommodate irregular rock cross-sections but also balance construction efficiency with support quality, placing high demands on the overall performance of construction equipment. The ZXP4517 concrete wet-spraying carriage from Zhengxun Heavy Industry, with its targeted structural design and upgraded core components, has become an effective assistant perfectly suited for such challenging working conditions.
The flexible and stable boom system is the core support that enables the ZXP4517 wet spray vehicle to adapt to complex surrounding rock conditions. The patented boom, independently developed by Zhengxun Heavy Industry, features a balanced and stable design that allows for 360° horizontal rotation and large-angle pitching and swinging motions. This significantly expands the coverage area for special sections such as tunnel arches and sidewalls, effectively reducing the dead zones often encountered with conventional equipment. At the same time, this boom structure helps alleviate uneven stress distribution, thereby enhancing the operational stability of the equipment and extending its service life. 
The ZXP4517 wet spray carriage is equipped with hydrostatic four-wheel drive and a hydraulically assisted steering system, paired with high-strength off-road tires, forming a chassis architecture that is perfectly suited for the complex environments found in tunnels. Even under conditions with steep gradients and rough road surfaces inside tunnels, this vehicle maintains excellent passability and steering flexibility, effectively reducing the time required for equipment movement in challenging terrain. Moreover, its smooth power output provides a solid foundation for prolonged, continuous operation, offering strong support for accelerating construction progress.
The pumping system of the ZXP4517 wet spraying carriage utilizes high-strength steel pipes with a diameter of no less than 125 mm. This design, by increasing the inner diameter of the pipeline, effectively reduces the pumping resistance of concrete during conveyance, thereby decreasing the frequency of pipe blockage failures. Not only does this ensure more uniform material spraying, but it also helps enhance the overall compactness of the support layer. Meanwhile, in practical applications, the wet spraying process significantly reduces the generation of construction dust, helping to improve the working environment inside tunnels and better aligning with the industry’s development philosophy of green construction. 
From the flexible coverage of the boom arm and the stable mobility of the undercarriage to the superior quality and environmental performance of the wet spraying process, the Zhengxun Heavy Industry ZXP4517 wet-spraying vehicle delivers a multidimensional performance upgrade, providing a practical and effective solution for tunnel support operations and becoming a reliable partner for tunnel construction teams tackling challenging support tasks. Looking ahead, Zhengxun Heavy Industry will continue to focus on the pain points in engineering construction, leveraging more targeted equipment R&D and technological upgrades to support project execution in a wide range of complex working conditions.
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Changsha Base:Hunan Zenxon Heavy Industry Technology Co., Ltd.
Address: Jinrong Tongxin International Industrial Park, Changsha High-tech Zone
Loudi Base:Hunan Haoda Heavy Industry Technology Co., Ltd.
Address: Loudi Avenue, Loudi High-tech Industrial Development Zone, Lianyuan City, Loudi City, Hunan Province
Telephone:400-186-0868
E-mail:3804246750@qq.com
E-mail:19967177733@163.com
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