行业组件数据 · 2026

下连杆

Lower links are adjustable connecting rods in implement hitches that transfer draft forces from implements to tractors while maintaining implement alignment.

技术定义与适配语境
典型 下连杆 会按材料、尺寸公差、适配关系和失效风险在 机械和设备制造 中评估。

Lower links are structural components in three-point hitch systems that connect the tractor's lower hitch points to the implement's lower attachment points. They are typically adjustable in length to accommodate different implement sizes and provide controlled vertical and horizontal movement. These links transmit pulling forces, support implement weight, and work in conjunction with the top link to maintain proper implement attitude during operation.

组件规格

定义
Lower links are structural components in three-point hitch systems that connect the tractor's lower hitch points to the implement's lower attachment points. They are typically adjustable in length to accommodate different implement sizes and provide controlled vertical and horizontal movement. These links transmit pulling forces, support implement weight, and work in conjunction with the top link to maintain proper implement attitude during operation.
工作原理
Lower links operate as force-transmitting members in a parallel linkage system. They convert tractor hydraulic lift force into vertical implement movement while maintaining parallel alignment. The adjustable turnbuckle mechanism allows for precise leveling of implements, ensuring even load distribution and proper ground engagement. During operation, they transfer draft forces through their pinned connections while allowing limited articulation to accommodate ground variations.
材料
High-strength carbon steel (ASTM A36 or equivalent)typically hot-dipped galvanized or powder-coated for corrosion resistance. Forged or cast steel end fittings with hardened steel bushings at pivot points.
Weight
15-40 kg
Length Range
500-1200 mm
Pin Diameter
25.4 mm (1 inch)
Load Capacity
3000-8000 kg
Adjustment Range
±50 mm
Working Pressure
Up to 200 bar
标准
ISO 5673ISO 730-1ASABE S217.12

行业分类与别名

下连杆 的常用贸易名称、技术标识和检索关键词。

上级产品

该组件会出现在以下整机或工业产品中。

FMEA · 风险与缓解

诱因 → 失效模式 → 工程缓解

Excessive cyclic loading beyond design limits->Fatigue cracking at stress concentration points->Regular inspection for cracks, proper load rating adherence, and replacement at recommended intervals
Inadequate lubrication at pivot points->Accelerated wear and increased operating forces->Scheduled lubrication maintenance and use of sealed bearing systems
Improper implement weight distribution->Bending or permanent deformation of links->Proper implement setup and use of weight distribution systems

工业生态与工程逻辑

0
Fatigue failure from cyclic loading
1
Pin wear leading to excessive play
2
Corrosion in agricultural environments
3
Improper adjustment causing implement instability

合规与检测

tolerance
±1.5 mm on pin bore alignment, ±2 mm on overall length adjustment
test method
Static load testing to 150% rated capacity, fatigue testing to 1 million cycles at 80% rated load, corrosion resistance testing per ISO 9227

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制造商列表用于前期研究和供应商能力理解,不代表认证、排名或交易担保。

采购评估维度

不是客户评论,也不是实时热度。以下维度用于前期 RFQ 准备和供应商评估。

技术文档
4/5
制造能力
4/5
可检验性
5/5
供应商透明度
3/5

这些分值是采购评估维度示例,不代表真实客户评分、具体国家买家反馈或实时询盘。

相关组件

常见问题

What is the purpose of adjustable lower links?

Adjustable lower links allow operators to level implements horizontally, ensuring even load distribution and proper ground engagement for consistent performance across varying terrain.

How do lower links differ from top links?

Lower links primarily transmit draft forces and support vertical loads, while top links control implement pitch and depth. Lower links typically have adjustable length for leveling, while top links control working angle.

What maintenance do lower links require?

Regular inspection for wear at pivot points, lubrication of all moving parts, checking for bending or deformation, and ensuring locking mechanisms function properly to maintain safe operation.

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CNFX Industrial Component Index · 机械和设备制造

数据基础

CNFX 制造商资料、技术分类、公开产品信息和持续合理性检查。

初步技术归类
本页用于结构化准备研究、RFQ 和供应商评估,不替代买方自己的供应商资质审查、标准核验和技术批准。

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URN:CNFX:ME:UNIT:LOWER_LINKS