CN109501866A - 自卸车驾驶室骨架b柱 - Google Patents

自卸车驾驶室骨架b柱 Download PDF

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CN109501866A
CN109501866A CN201811484473.8A CN201811484473A CN109501866A CN 109501866 A CN109501866 A CN 109501866A CN 201811484473 A CN201811484473 A CN 201811484473A CN 109501866 A CN109501866 A CN 109501866A
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赵虎辰
宗雪
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Jiangsu Normal University
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Abstract

本发明公开了一种自卸车驾驶室骨架B柱，包括B柱本体，所述的B柱本体为中空钢管，中空部灌注有聚氨酯无缝发泡剂。有益效果是在B柱中灌有聚氨酯无缝发泡剂，隔音降噪效果明显，能很好的起到驾驶室的隔音降噪，提升驾乘舒适性。

Description

自卸车驾驶室骨架B柱
技术领域
本发明涉及一种自卸车驾驶室骨架B柱。
背景技术
伴随着我国工程机械行业的高速发展，我国工程机械的几大巨头正在大力拓宽海外市场，实现我国的工程机械产品从中国走向世界，这就要求我们的产品必须具备较强的综合性能，具备较强的竞争力。各国针对矿用自卸车驾乘舒适性的要求也越来越高，提升矿用自卸车驾驶室的综合性能势在必行。国际上对矿用自卸车驾驶室的NVH标准具有较高的要求，传统矿用自卸车驾驶室骨架多为中空结构，对外界噪声基本没有屏蔽作用，驾乘舒适性能较差。
发明内容
针对上述现有技术存在的问题，本发明提供一种自卸车驾驶室骨架B柱，隔音降噪效果明显，能很好的起到驾驶室的隔音降噪，提升驾乘舒适性。
为了实现上述目的，本发明采用的技术方案是：一种自卸车驾驶室骨架B柱，包括：B柱本体， B柱本体为中空钢管，中空部灌注有聚氨酯无缝发泡剂。
进一步改进，所述的B柱本体为倒置的y形结构，采用倒置的y形结构，可以充分利用三角性造型的结构稳定性，通过改变结构件的造型结构来提升B柱的强度和刚度，从而提升矿用自卸车的被动安全性。
本发明的有益效果是：本发明在B柱中灌有聚氨酯无缝发泡剂，隔音降噪效果明显，能很好的起到驾驶室的隔音降噪，提升驾乘舒适性。
附图说明
图1是本发明的结构示意图；
图2是本发明的的另一种结构示意图。
图中：1、B柱本体，2、灌注口，3、空气排出口。
具体实施方式
下面将结合附图对本发明作进一步说明。
如图1所示，一种自卸车驾驶室骨架B柱，包括：B柱本体， B柱本体为中空钢管，中空部灌注有聚氨酯无缝发泡剂。
制作的时候在B柱本体的一端开有方形的注料口，令一端开有半径较小的圆形排气口，当发泡性材料通过方形的注料口注入时，支撑件内的空气通过圆形的排气口排出。发泡性材料的应用可以很好的起到驾驶室的减震降噪效用，大大提升了驾乘的舒适性。
如图2所示，本B柱本体还可以采用倒置的y形结构，很好的起到驾驶室支撑作用，以及安全防护作用。
本发明采用聚氨酯无缝发泡剂为阻燃聚氨酯发泡材料，以无机硼氮掺杂复合体作为泡孔成核剂，乙酸-醋酸乙烯酯共聚物燃烧时通过膨胀发泡作用氧化形成不易燃的碳层，隔断与氧气的界面接触有效地组织材料的持续燃烧，无机硼氮掺杂复合物形成一种多孔核壳与发泡提形成特殊空隙，本身硼氮掺杂镍元素协同叠加具有优异的阻燃效果，并且优异的孔道性能在一定条件下大大增强了其吸音效果。
实施例1
一种阻燃聚氨酯发泡材料，材料制备方法包括以下步骤：
50份异氰酸酯、20份乙烯-醋酸乙烯酯共聚物，20份聚醚多元醇，10份邻苯二甲酸二正丁酯、5份发泡剂偶氮二甲酰胺、10份无机硼氮掺杂复合体，不断搅拌，直至混合液体出现乳白现象，停止搅拌，
并注入发泡目标腔体中进行发泡得到聚氨酯发泡材料，发泡目标腔体的温度为35℃。
所述的无机硼氮掺杂复合物BN@NiO的制备方法如下：
步骤1、分别量取10份无水乙醇与2份六水合硫酸镍混合均匀，配置得到混合物A；
步骤2、称取3份硼酸和4份尿素，混合得到混合物B，
步骤3、将上述所得混合物A和混合物B混合制得混合物C,调节混合物C的PH=7，搅拌制得硼氮共掺杂氧化镍溶胶一凝胶前驱体,经20r/min搅拌速率,搅拌2h；
步骤4、搅拌完成后静置后得到硼氮共掺杂纳米氧化镍湿凝胶,然后经过40℃下烘干、研磨，在马弗炉中经400℃锻烧后，得到无机硼氮掺杂复合物BN@NiO。
阻燃性能的氧指数为37，1000Hz-4000Hz频率的吸音系数为0.92。
实施例2
与实施例1不同在于：40份异氰酸酯、25份乙烯-醋酸乙烯酯共聚物，20份聚醚多元醇，10份邻苯二甲酸二正丁酯、5份发泡剂偶氮二甲酰胺、10份无机硼氮掺杂复合体。阻燃性能的氧指数为30。1000Hz-4000Hz频率的吸音系数为0.91。
实施例3
与实施例1不同在于：50份异氰酸酯、20份乙烯-醋酸乙烯酯共聚物，15份聚醚多元醇，10份邻苯二甲酸二正丁酯、5份发泡剂偶氮二甲酰胺、10份无机硼氮掺杂复合体。阻燃性能的氧指数为29。1000Hz-4000Hz频率的吸音系数为0.88。
实施例4
与实施例1不同在于：所述的无机硼氮掺杂复合物BN@NiO的制备方法如下：
步骤1、分别量取10份无水乙醇与2份六水合硫酸镍混合均匀，配置得到混合物A；
步骤2、称取3份硼酸和4份尿素，混合得到混合物B，
步骤3、将上述所得混合物A和混合物B混合制得混合物C,调节混合物C的PH=7，搅拌制得硼氮共掺杂氧化镍溶胶一凝胶前驱体,经20r/min搅拌速率,搅拌2h；
步骤4、搅拌完成后静置后得到硼氮共掺杂纳米氧化镍湿凝胶,然后经过40℃下烘干、研磨，在马弗炉中经400℃氮气气氛下煅烧后，得到无机硼氮掺杂复合物BN@NiO。阻燃性能的氧指数为34，1000Hz-4000Hz频率的吸音系数为0.98。
对照例1
与实施例1不同在于：不加入10份无机硼氮掺杂复合体。阻燃性能的氧指数为24，1000Hz-4000Hz频率的吸音系数为0.81。
对照例2
与实施例1不同在于：用10份纳米硅份替代无机硼氮掺杂复合体。阻燃性能的氧指数为26，1000Hz-4000Hz频率的吸音系数为0.83。
对照例3
与实施例1不同在于：所述的无机硼复合物的制备方法如下：
步骤1、分别量取10份无水乙醇与2份六水合硫酸镍、3份硼酸混合均匀，配置得到混合物
调节混合物的PH=7，搅拌制得硼氮共掺杂氧化镍溶胶一凝胶前驱体,经20r/min搅拌速率,搅拌2h；
步骤4、搅拌完成后静置后得到硼-纳米氧化镍湿凝胶,然后经过40℃下烘干、研磨,在马弗炉中经400℃锻烧后，得到无机硼复合氧化镍。阻燃性能的氧指数为29，1000Hz-4000Hz频率的吸音系数为0.83。
对照例4
与实施例1不同在于：无机硼氮掺杂复合物制备方法中用2份九水合硝酸铁替代六水合硫酸镍。阻燃性能的氧指数为28，1000Hz-4000Hz频率的吸音系数为0.88。
对照例5
与实施例1不同在于：无机硼氮掺杂复合物不加入2份六水合硫酸镍。
阻燃性能的氧指数为25，1000Hz-4000Hz频率的吸音系数为0.85。
综上，自卸车驾驶室骨架B柱内腔采用阻燃聚氨酯发泡材料具有优秀的阻燃效果和吸音效果。整体提高了自卸车驾驶室骨架B柱的整体性能。

Claims (3)

1.一种自卸车驾驶室骨架B柱，包括B柱本体，其特征在于所述的B柱本体为中空钢管，中空部灌注有聚氨酯发泡材料。
2.根据权利要求1所述的一种自卸车驾驶室骨架B柱，其特征在于所述的B柱本体为倒置的y形结构。
3.根据权利要求1所述的一种自卸车驾驶室骨架B柱，其特征在于所述的聚氨酯无缝发泡材料为阻燃聚氨酯发泡材料。
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