根据ISO 10326-1，本国际标准规定了一种实验室方法，用于测量和评估农业轮式拖拉机操作员座椅悬挂的有效性。它还规定了基于测试结果的验收标准，同时定义了与三类带橡胶轮胎、非簧载后轴和无低频驾驶室隔离的农用拖拉机相关的输入光谱等级。体重不超过3600kg（1级）、3600kg至6500kg（2级）和6500kg以上（3级）的车辆。其中每个定义了一组具有相似振动特性的机器。该方法测试座椅悬架在降低以1 Hz至20 Hz的频率传递给操作员的垂直全身振动方面的有效性。不适用于通过座椅以外的振动到达操作员（e。 g、 操作员感觉到的。将脚放在平台上或控制踏板或手放在方向盘上）。注:本国际标准中定义的试验和标准适用于传统设计的农业拖拉机中使用的操作员座椅。可根据ISO 5008测试具有隔离前轴或后轴或两者以及低频驾驶室悬架等设计特征的拖拉机，以确定整体振动排放值，或使用为测量和评估此类车辆座椅悬架的有效性而制定的其他标准。

This International Standard specifies, in accordance with ISO 10326-1, a laboratory method for measuring and evaluating the effectiveness of the suspension of operator seats on agricultural wheeled tractors. It also specifies acceptance criteria based on the test results, while defining the input spectral classes relating to three classes of agricultural tractor with rubber tyres, unsprung rear axles and no low-frequency cab isolation. those of up to 3 600 kg (class 1), those of from 3 600 kg to 6 500 kg (class 2), and those of over 6 500 kg (class 3). each of which defines a group of machines having similar vibration characteristics.The method tests the effectiveness of the seat suspension in reducing the vertical whole-body vibration transmitted to the operator at frequencies of from 1 Hz to 20 Hz. It is not applicable to vibration reaching the operator other than through the seat (e.g. that sensed by the operator.s feet on the platform or control pedals or hands on the steering wheel).NOTE The tests and criteria defined in this International Standard are intended for operator seats used in agricultural tractors of conventional design. Tractors with design features such as isolated front or rear axles or both and low-frequency cab suspensions, which result in significantly different vibration characteristics, can be tested in accordance with ISO 5008 to determine a whole body vibration emission value or using other standards developed for measuring and evaluating the effectiveness of the seat suspension on such vehicles.