行业组件数据 · 2026

顶置横梁

A structural crossbar component in ROPS frames that provides overhead protection and load distribution for operator safety in rollover incidents.

技术定义与适配语境
典型 顶置横梁 会按材料、尺寸公差、适配关系和失效风险在 汽车制造 中评估。

The Overhead Crossbar is a critical horizontal structural member in Roll-Over Protective Structure (ROPS) frames, designed to absorb and distribute impact forces during vehicle rollovers. It connects the vertical posts of the ROPS frame, creating a protective canopy that prevents the operator compartment from being crushed. This component must withstand significant static and dynamic loads while maintaining structural integrity to meet international safety standards for off-road and industrial vehicles.

组件规格

定义
The Overhead Crossbar is a critical horizontal structural member in Roll-Over Protective Structure (ROPS) frames, designed to absorb and distribute impact forces during vehicle rollovers. It connects the vertical posts of the ROPS frame, creating a protective canopy that prevents the operator compartment from being crushed. This component must withstand significant static and dynamic loads while maintaining structural integrity to meet international safety standards for off-road and industrial vehicles.
工作原理
The Overhead Crossbar functions as a load-bearing beam that transfers compressive and bending forces from impact loads to the vertical ROPS posts and frame structure. During a rollover event, it deforms elastically and plastically to absorb kinetic energy while maintaining sufficient clearance space for the operator. The crossbar's geometry and material properties are engineered to provide optimal strength-to-weight ratio and energy absorption characteristics.
材料
High-strength low-alloy (HSLA) steeltypically ASTM A572 Grade 50 or equivalentwith yield strength ≥ 345 MPa and tensile strength ≥ 450 MPa. May include advanced high-strength steels (AHSS) or boron steel for enhanced performance. Surface treatment: hot-dip galvanized or powder-coated for corrosion resistance.
Length
Customized to vehicle width (typically 1500-2500 mm)
Cross-section
Rectangular or circular hollow section
Mounting type
Welded or bolted connection to vertical posts
Wall thickness
3-6 mm depending on load requirements
Weight capacity
Designed for 2-4 times vehicle weight
Deflection limit
≤ 150 mm under SAE J2194 test conditions
标准
ISO 3471SAE J2194ISO 3449OECD Code 6

行业分类与别名

顶置横梁 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

Material fatigue from cyclic loading->Crack propagation leading to structural failure->Regular non-destructive testing (NDT), proper material selection with adequate fatigue resistance, design with stress concentration reduction features
Corrosion in aggressive environments->Reduced cross-sectional area and strength degradation->Proper surface protection (galvanization, coatings), regular inspection and maintenance, material selection with corrosion resistance
Overload from excessive impact->Plastic deformation beyond design limits->Operator training on vehicle limitations, installation of warning systems, regular inspection for deformation signs

工业生态与工程逻辑

0
Structural fatigue from vibration
1
Corrosion in harsh environments
2
Improper installation compromising safety
3
Impact damage from overhead obstacles
4
Material degradation over time

合规与检测

tolerance
Dimensional tolerance ±2 mm, angular tolerance ±0.5°, welding penetration ≥80% of material thickness
test method
Static load testing per ISO 3471: Lateral, vertical, and longitudinal load application with deflection measurement. Dynamic testing for energy absorption. Non-destructive testing (ultrasonic, magnetic particle) for weld integrity.

制造该组件的工厂

来自 CNFX 组件能力表的相关制造商资料。

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 primary function of an Overhead Crossbar in ROPS frames?

The primary function is to provide overhead protection by absorbing and distributing impact forces during rollover incidents, preventing the operator compartment from collapsing and ensuring survival space.

How often should Overhead Crossbars be inspected?

Visual inspections should be conducted daily before operation, with detailed structural inspections every 1,000 operating hours or annually, and after any impact event.

Can damaged Overhead Crossbars be repaired?

No, damaged or deformed Overhead Crossbars must be replaced entirely. Repairs are not permitted as they compromise structural integrity and void certification.

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CNFX Industrial Component Index · 汽车制造

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URN:CNFX:ME:UNIT:OVERHEAD_CROSSBAR