An adjustment device for the excavating components of a trenching and pipe-laying machine

By designing a mounting bracket for the excavating chain and coordinating it with an adjusting cylinder, the problems of non-adjustable length and insufficient tension of traditional excavating chains were solved, achieving reliable tension and depth adaptability of the excavating chain and improving excavation stability.

CN224431522UActive Publication Date: 2026-06-30QINGDAO YINGTE RUIEN MASCH MFG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
QINGDAO YINGTE RUIEN MASCH MFG CO LTD
Filing Date
2025-07-29
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Traditional digging chains cannot be adjusted in length to adapt to different digging depth requirements, and their tension is limited, resulting in unreliable chain fixation.

Method used

An adjustment device was designed, comprising a digging chain mounting bracket, a connecting bridge, a top sprocket, an outer digging arm, a tensioning sprocket, and an adjusting cylinder. The distance between the outer and inner digging arms is adjusted by the adjusting cylinder to achieve reliable tensioning of the digging chain, and the length can be adjusted as needed to adapt to digging requirements at different depths.

Benefits of technology

It achieves reliable tensioning of the excavation chain, improves the tensioning force, and can adapt to the excavation needs at different depths, ensuring the stability and adaptability of the excavation chain.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses an adjustment device for the excavating components of a trenching and pipe-laying machine, belonging to the technical field of trenching and pipe-laying machinery. It includes an excavating chain mounting bracket, a connecting bridge fixed to the excavating chain mounting bracket, a top sprocket installed inside the connecting bridge, an outer excavating arm installed on the connecting bridge, a tensioning sprocket and an adjusting cylinder installed on the outer excavating arm, an inner excavating arm fixed to the adjusting cylinder, and a bottom sprocket installed on the inner excavating arm. The two ends of the adjusting cylinder are respectively installed on the outer and inner excavating arms. The adjusting cylinder, outer excavating arm, inner excavating arm, top sprocket, tensioning sprocket, and bottom sprocket cooperate to achieve tensioning of the excavating chain. The distance between the outer and inner excavating arms is adjusted using the adjusting cylinder to achieve excavating chain tensioning. This not only ensures high tensioning reliability but also allows for adjustment of the extension and retraction length of the adjusting cylinder to accommodate different excavation depth requirements and varying excavating chain lengths.
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