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山东省《DB37/T 4181—2020秸秆粉碎灭茬混土还田整地机通用技术规范》解读

2022-09-29 10:12:33 来源:农机网整理发布 阅读量:39562 评论

导读:该标准适用于拖拉机配套的用于秸秆覆盖地的秸秆粉碎、还田以及整地作业的秸秆粉碎灭茬混土还田整地机。

  【农机网 政策与标准】《DB37/T 4181—2020秸秆粉碎灭茬混土还田整地机通用技术规范》于2020年9月30日由山东省市场监督管理局批准发布,该标准自2020年10月30日实施。
 
  该标准由山东省农业农村厅提出并组织实施,由由山东省农业标准化技术委员会农业机械标准化分技术委员会归口,由山东理工大学、山东庆云颐元农机制造有限公司、郓城工力有限公司、山东省标准化研究院起草。
 
  该标准规定了秸秆粉碎灭茬混土还田整地机的术语和定义、型号与基本参数、技术要求、安全要求、试验方法、检验规则和标志、运输与贮存。适用于拖拉机配套的用于秸秆覆盖地的秸秆粉碎、还田以及整地作业的秸秆粉碎灭茬混土还田整地机(以下简称整地机)。
 
  一般技术要求——
 
  整机制造要求:
 
  秸秆粉碎灭茬混土还田整地机应按规定程序批准的图样和技术文件制造。
 
  零部件加工要求:
 
  加工件需倒锐角,气割件需磨平。
 
  混土刀和刀座:
 
  刀身硬度:48 HRC~54 HRC;刀柄硬度:38 HRC~45 HRC。
 
  万向节传动轴:
 
  万向节传动轴和动力输入连接装置应符合 GB/T 17126.1 和 GB/T 17126.2 的规定。
 
  万向节传动轴防护罩应符合 GB/T 5263 的规定。
 
  齿轮箱与齿轮:
 
  齿轮箱体应采用机械性能不低于 GB/T 9439—2010 中规定的 HT200 灰铸铁材料制造。
 
  齿轮应采用机械性能不低于 GB/T 3077—2015 中规定的 20 CrMnTi 材料制造。齿面须经渗碳处理,渗碳层厚度为齿轮模数的 10 %~15 %,齿面淬火区热处理硬度为 58 HRC~64 HRC,芯部硬度为 33 HRC~45 HRC。
 
  花键轴
 
  花键轴采用机械性能不低于 GB/T 3077—2015 中规定的 40 Cr 材料制造,整体调质处理,硬度为 25 HB~30 HB。
 
  矩形花键尺寸、公差和检验应符合 GB/T 1144 的有关规定。
 
  渐开线花键的模数、基本齿廓,公差应符合 GB/T 3478.1—2008 的有关规定。
 
  粉碎刀销轴:
 
  粉碎刀销轴采用机械性能不低于 GB/T 699—2015 中规定的 45 号钢材料制造。
 
  粉碎刀销轴须进行热处理,表面硬度为 38 HRC~45 HRC。
 
  粉碎刀:
 
  粉碎刀应采用机械性能不低于 GB/T 699—2015 中规定的 65 Mn 钢制造。
 
  粉碎刀须经热处理,刀身硬度为 48 HRC~56 HRC,刀柄硬度为 33 HRC~40 HRC。
 
  粉碎刀装配前应按重量分级,同一重量级的刀片重量差不大于 10 g。
 
  刀轴焊合:
 
  刀轴与刀座焊合后应进行热处理,以消除内应力。
 
  刀轴焊合后应去除毛刺,清除焊渣。
 
  装配技术要求:
 
  所有零、部件须经检验合格,外购件、外协件须有检验合格证方能进行装配。
 
  刀轴、齿轮箱处承受载荷的紧固件的强度等级为:螺栓不低于 GB/T 3098.1—2010 中规定的 8.8 级,螺母不低于 GB/T 3098.2—2015 中规定的 8 级。
 
  旋耕刀辊半径变动量应不大于 15 mm。
 
  整机装配后,应在刀辊工作转速范围内磨合不少于 30 min。
 
  整机技术要求:
 
  同一粉碎刀轴应安装同一重量级的刀片,刀轴和刀片装配后,应按 GB/T 9239.1—2006 的规定进行动平衡试验,平衡精度为 G6.3 级。
 
  每台秸秆粉碎灭茬混土还田整地机装配后,应在刀轴工作转速范围内进行 30 min 空运转试验, 运转应平稳,系统不得有卡、碰异常响声。停车后检查下列项目:
 
  a)紧固性:各连接件、紧固件不得松动;
 
  b)油温:在规定油液位置范围内,齿轮箱内润滑油的温升应不大于 25 ℃;
 
  c)轴承座、轴承部位温升应不大于 25 ℃;
 
  d)密封性:不允许渗、漏油。
 
  涂漆应符合 JB/T 5673—2015 的有关规定。整机外观涂层应色泽均匀平整、光滑无露底。涂层厚度应不小于 35 μ m,漆膜附着力达到 3 处Ⅱ级。
 
  对悬挂销、孔和外露花键轴套等无需涂漆的部位应采取措施防止着漆,且应有防锈措施:
 
  ——运转终传动系统不得有异常响声;
 
  ——空运转扭矩:侧边传动不大于15 N•m,中间传动不大于20 N•m;
 
  ——油温:箱体内润滑油的温升不得超过25 ℃;
 
  ——密封性:箱体静结合面和动结合面均不得漏油;
 
  ——传动箱清洁度:传动箱中铁屑等杂物干重不应超过200 mg。
 
  主要紧固件的强度等级:螺栓、螺钉机械性能应不低于 GB/T 3098.1—2010 中的 8.8 级,螺母应不低于 GB/T 3098.2—2015 中的 8 级;螺栓拧紧力矩按附录 A 的规定,主要紧固件指刀轴、齿轮箱、主梁、框架、侧板和悬挂板等承受载荷处的紧固件。
 
  操作方便性:各调整装置应可靠、方便、灵活,无卡滞和不易锁定等缺陷;带拨叉变速的整地机应能灵活换档,不得有或挂不上档现象,挂档后不得有自动脱档现象。
 
  可点击下方下载完整标准文件。
 
  注:本文由农机网(www.nongjx.com)整理发布,资料来源:地方标准信息公共服务平台。
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