LY/T 1202.4-2001 草坪割草机 试验方法

B95

LT

中华人民共和国林业行业标准

LY/T1202.4-2001

neqISO5395:1990

草坪割草机试验方法

Lawnmower-Testprocedures

2001一07一24发布2001一12一15实施

国家林业局发布

LY/T1202.4-2001

目次

前言··········································..············“····················································……，

ISO前言················································································”·······················……N

1范围························.·······················································”·························……1

2旋刀式草坪割草机的试验方法·········“········”·······························..·.·····.·..·..·..·..·……1

2.1刀片制动时间测定·········································“············.，·····························…·…1

2.2操作者耳旁噪声测定························”···························································…·…1

2.3油箱泄漏检查··························”···············“···············································……3

2.4撞击试验······················”······，·····”························································。·····……3

2.5刀片不平衡试验··························································································…·…4

2.6脚模型试探试验·································································“························……4

2.?抛射物体试验·························”················”·············································，···…·…5

2.8台壳、排草通道、排草护罩和集草器的结构完好性试验“··········································……8

2.9随进式草坪割草机制动试验··········································································。·……10

2.10乘坐式草坪割草机制动试验······························································..·..····……10

2.n乘坐式草坪割草机稳定性试验······················································.·……n

3滚刀式草坪割草机的试验方法···································································.·..···……12

3.1刀片制动时间测定····················，·································，··········..·...·.··、······.·..·..·……12

3.2操作者耳旁噪声测定··，·························”····································..····...……。……12

3.3油箱泄漏检查········································”······················································……12

3.4随进式草坪割草机脚模型试探试验····························································.·...…·…12

3.5随进式草坪割草机制动试验····················································…·…，·····.·..·.·.·……12

3.6随进式草坪割草机排草抛出线测量··············································..···.·..·.·...·.·……12

3.7乘坐式草坪割草机制动试验······························································、···，····一·、，、…12

3.8乘坐式草坪割草机排草抛出线测量·····························································.··…·…12

3.9乘坐式草坪割草机稳定性试验·························”·······························.·.··..·..·.……12

附录A(标准的附录)通用试验条件·······························.，·、····“··…、·..“.、二，‘、、..……13

附录B(标准的附录)试验围靶···”·············································”·····.·.··········……14

附录C(标准的附录)靶板材料穿透试验·············································..·.·····..·.·..·..·.……16

附录D(标准的附录)抛射物体试验报告······································，···.·...一，.·.·.一…‘…18

附录E(提示的附录)操作者耳旁噪声测试报告·”·····················································……20

LY/T1202.4-2001

前言

本标准是对LY/T1202-1997《草坪割草机技术条件》的修订。本次修订后原标准变为系列标

准。

本标准非等效采用ISO5395:1990《动力草坪割草机、草坪拖拉机、草坪和园艺拖拉机、专业割草机

及带割草附加装置的草坪和园艺拖拉机定义、安全要求及试验规程》及ISO5395:1990/Amd.1:1992

《动力草坪割草机、草坪拖拉机、草坪和园艺拖拉机、专业割草机及带附加装置的草坪和园艺拖拉机定

义、安全要求及试验规程》补充1。在内容上仅采用其试验方法部分，增加了对刀片制动时间、操作者耳

旁噪声、油箱泄漏等的测试，并将通用试验条件作为标准的附录。

本标准的操作者耳旁噪声测试方法参考采用美国国家标准ANSI/OPEIB71.5-1984《动力草坪、

园艺和除雪设备操作者耳旁声压级测定和计算方法》。

本标准的附录A,附录B,附录C、附录D都是标准的附录。

本标准的附录E是提示的附录。

本标准从实施之日起，同时代替LY/T1202-1997,

本标准由全国林业机械标准化技术委员会提出。

本标准由全国林业机械标准化技术委员会归口。

本标准负责起草单位:南通纵横国际股份有限公司。

本标准参加起草及参加讨论单位:南京理工大学、淮阴泛亚园林机械制造有限公司、扬州市邢江维

邦园林机械厂、国家林业局哈尔滨林业机械研究所。

本标准主要起草人:朱玲、蔡显建、陈振玉、范元勋

LY/T1202.4-2001

ISO前言

ISO(国际标准化组织)是各国家标准团体((ISO成员团体)的一个全世界范围的联合组织。制定国

际标准的工作一般通过ISO各技术委员会进行。各成员团体如对某一技术委员会确定的主题感兴趣，

有权向该委员会陈述。与ISO有联系的政府和非政府的国际组织，也可以参与这项工作。在电工标准化

的各方面，ISO与国际电工委员会(IEC)密切合作。

由技术委员会通过的国际标准草案送交各成员团体进行投票，要通过一项国际标准至少需要75%

的成员团体投赞成票。

国际标准ISO5395:1990由ISO/TC23拖拉机和农林机械技术委员会制定。

本修订版I废止并取代了旧版本的几个部分:ISO5395-1:1984,ISO5395-2:1981,ISO5395-3:

1985及其1986年的补充1和ISO5395-4:1985的所有修订版。

中华人民共和国林业行业标准

LY/T1202.4-2001

neqISO5395:1990

草坪割草机试验方法

代替LY/T1202-1997

Lawnmower-Testprocedures

1范围

本标准规定了草坪割草机刀片制动时间、操作者耳旁噪声、油箱泄漏检查、撞击试验和刀片不平衡

等安全性能试验项目的试验方法。

本标准适用于旋刀式草坪割草机、滚刀式草坪割草机。

本标准不适用于剪刀式草坪割草机、甩刀式草坪割草机，也不适用于电动草坪割草机。

2旋刀式草坪割草机的试验方法

2.1刀片制动时间测定

刀勺u最高工作速度运转，用秒表测量从操作者脱开操作机构之时到刀片停止转动之时所经过的

时间。

2.2操作者耳旁噪声测定

2.2.1测试仪器

—精密声级计，精度士1dB(A);传声器，精度25mV/Pa;

—声级校准器，精度士。.5dB(A);

—测量环境风速的风速风量仪，精度士3%士0.1;

—发动机转速测量仪，精度士1%;

—测量环境温度的温度计，精度士1C0,

2.2.2一般要求

2.2-2.1草坪割草机操作者身高1.65m^-1.75m,

2.2-2.2应由经过技术培训并熟悉现行测试技术的人员进行试验。

2.2-2.3应按仪器的使用说明书或其他文献规定，正确使用所有仪器，并考虑下列一些特殊情况，

—传声器的型式、它的方向性灵敏度性能以及它与噪声源的相对方向;

—环境气候条件(温度、湿度和大气压)对仪器性能的影响，测试仪器可能受低温的影响，因此应

加以注意;

—正确的声学校准程序。现场校准应在每个试验程序完成之前和之后立即进行。

注:若传声器和声级计用电缆连接，应考虑延伸电缆的影响

2.2-2.4测试只应在风速低于5m/。的条件下进行。

22.2.5选择场地要注意，不要因地表振动造成声压级读数增加。

2.2-2.6场地要求:

—试验场地应是平坦的开阔空间，距试验场地表面中心至少15m范围内没有标牌、建筑物或山

坡的影响;

—场地尺寸，包括操作者位置在内的试验地表面最小尺寸、长度和宽度均应比被测草坪割草机大

国家林业局2001一07一24批准2001一12-15实施

1

LY/T1202.4-2001

1m，见图la);

注:R(空旷地宽度))15ma

a)试验场地

单位:mm

b)传声器位置

图1

—试验地表面为草地，表面不冻结，青草高度大约50mm,

2.2-2.7读声级计的观测人员站在草坪割草机操作者正后面，其他所有人员离被测草坪割草机至少

7m，不应影响所测声压级。

2.2.2.8背景噪声应比被测设备的声压级至少低10dB(A),

2.2-2.9所有草坪割草机应在固定状态下进行试验。试验应在试验场地的中心进行，发动机应调到生

产厂规定的最高转速，刀片割草高度应调节到尽可能接近50mm的位置。

2.2.3测定方法

2.2-3.1声级计应调到A计权慢挡处。

2-2.3-2应测定和记录环境风速、环境温度、设备生产厂规定的发动机最高工作转速，试验工况下的发

动机转速以及环境的A计权声压级。

2.2.33操作者应在正常操作位置上，传声器不应与被测草坪割草机接触，而应在离地面1680