JB/T 51093-1999
Tractor Steering Gear - Product Quality Grading
拖拉机转向器 产品质量分等
Catalogue
前言 → 1 范围 → 2 引用标准 → 3 一般要求 → 4 转向器产品质量的分等 → 5 转向器产品各等级指标 → 6 试验方法 → 7 检验规则 Foreword → 1 Scope → 2 Normative References → 3 General Requirements → 4 Classification of Steering Gear Product Quality → 5 Indicators for Each Grade of Steering Gear Product → 6 Test Methods → 7 Inspection Rules
Scope
This standard specifies the product quality grading indicators, test methods, and inspection rules for tractor mechanical steering gears. This standard applies to the quality inspection and grade evaluation of tractor mechanical steering gears (hereinafter referred to as steering gears).
本标准规定了拖拉机机械转向器产品质量分等指标、试验方法和检验规则。本标准适用于拖拉机机械转向器（以下简称转向器）产品质量的检测和等级评定。
Normative References
Keywords
Application Summary AI generated
Manufacturers and quality inspection agencies of tractor steering gears use this standard to grade and test products. It helps determine whether a steering gear is qualified, first-grade, or superior, ensuring performance meets design requirements. This standard is important for improving the overall quality and reliability of tractor steering gears.
拖拉机转向器制造商和质检机构使用本标准来对产品进行质量分等和检测。它帮助确定转向器属于合格品、一等品还是优等品，从而确保产品性能符合设计要求。该标准对于提升拖拉机转向器的整体质量和可靠性具有重要意义。
AI Summary AI generated
This standard JB/T 51093-1999 specifies product quality grading indicators, test methods, and inspection rules for tractor mechanical steering gears. It classifies steering gears into three grades: qualified, first-grade, and superior, covering performance indicators such as angular transmission ratio, transmission clearance, transmission efficiency, no-load resistance torque, rigidity, static torsion strength, drop hammer impact, and fatigue life. Test methods reference relevant standards, and inspection rules adopt sampling plans from GB/T 2828. The standard applies to quality inspection and grade evaluation of tractor mechanical steering gears.
本标准JB/T 51093-1999规定了拖拉机机械转向器的产品质量分等指标、试验方法和检验规则。标准将转向器分为合格品、一等品和优等品三个等级，涵盖性能指标如角传动比、传动间隙、传动效率、空载阻力矩、刚性、静扭强度、落锤冲击和疲劳寿命等。试验方法引用相关标准，检验规则采用GB/T 2828的抽样方案。该标准适用于拖拉机机械转向器的质量检测和等级评定。
Key Sentences extracted from text
本标准规定了拖拉机机械转向器产品质量分等指标、试验方法和检验规则。
按转向器产品的技术水平和质量水平，分为合格品、一等品和优等品。
转向器角传动比特性应符合设计要求。
转向器传动间隙特性应符合设计要求；合格品和一等品转向盘自由行程应不大于15°；优等品传动间隙曲线应均匀圆滑，中间位置应为无间隙啮合，即在转向轴居中的15°转角范围内，其对应的垂臂轴转角空行程不大于15'。
转向器空载转动阻力矩应符合表2的要求。
This standard specifies the product quality grading indicators, test methods, and inspection rules for tractor mechanical steering gears.
According to the technical level and quality level of the steering gear product, it is classified into qualified product, first-grade product, and superior product.
The steering gear angular transmission ratio characteristics shall comply with design requirements.
The steering gear transmission clearance characteristics shall comply with design requirements; for qualified and first-grade products, the steering wheel free travel shall not exceed 15°; for superior products, the transmission clearance curve shall be uniform and smooth, and the middle position shall be backlash-free meshing, i.e., within a 15° rotation angle of the steering shaft centered, the corresponding idle travel of the pitman arm shaft angle shall not exceed 15'.
The steering gear no-load rotational resistance torque shall comply with the requirements of Table 2.
Standard Timeline
Changes from replaced version:
- 对原标准作了编辑性修改，主要技术内容没有变化
- Editorial modifications were made to the original standard, with no changes to the main technical content.