Article(id=1200070548039500278, tenantId=1146029695717560320, journalId=1189918454225211397, issueId=1200070539239845894, articleNumber=null, orderNo=null, doi=10.20104/j.cnki.1674-6546.20220090, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=null, receivedDateStr=null, revisedDate=1697731200000, revisedDateStr=2023-10-20, acceptedDate=null, acceptedDateStr=null, onlineDate=1764048714885, onlineDateStr=2025-11-25, pubDate=1715702400000, pubDateStr=2024-05-15, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1764048714885, onlineIssueDateStr=2025-11-25, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1764048714885, creator=13701087609, updateTime=1764048714885, updator=13701087609, issue=Issue{id=1200070539239845894, tenantId=1146029695717560320, journalId=1189918454225211397, year='2024', volume='', issue='5', pageStart='1', pageEnd='48', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1764048712787, creator=13701087609, updateTime=1764049260169, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1200072835185079140, tenantId=1146029695717560320, journalId=1189918454225211397, issueId=1200070539239845894, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1200072835185079141, tenantId=1146029695717560320, journalId=1189918454225211397, issueId=1200070539239845894, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=39, endPage=44, ext={EN=ArticleExt(id=1200070548408599062, articleId=1200070548039500278, tenantId=1146029695717560320, journalId=1189918454225211397, language=EN, title=Fault Analysis and Improvement of Gearbox Gear Switch, columnId=null, journalTitle=Automotive Engineer, columnName=null, runingTitle=null, highlight=null, articleAbstract=
In order to eliminate fault of gearbox gear switch in use, this paper, by correlating with the faulty parts in the use of gear switch, analyzed oil intake problem caused by poor sealing of gear switch, switch on-and-off failure under actuating pressure as well as contact ablation, to further improve the performance of the gear switch. The verification results show than the proposed scheme can effectively solve the problems existing in the use of the gear switch.
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为了解决变速箱用挡位开关在使用中故障问题,结合挡位开关使用中的故障件,对挡位开关密封不良造成内部进油问题、作动压力下开关通断失效问题以及触点烧蚀问题进行分析,进一步提高挡位开关的性能。验证结果表明,所提出的方案可有效解决挡位开关在使用过程中存在的问题。
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电负荷试验电路, figureFileSmall=Q3Du+oTHUBCq0lfF3bSM8g==, figureFileBig=/tn7gJ7NanN1Lb34UpiutQ==, tableContent=null), ArticleFig(id=1200407198464602989, tenantId=1146029695717560320, journalId=1189918454225211397, articleId=1200070548039500278, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 故障模式 | 计数/件 | 占比/% |
| 内部进油 | 65 | 34.76 |
| 漏、憋气 | 46 | 24.60 |
| 触点烧蚀 | 31 | 16.58 |
| 通断行程超差 | 12 | 6.42 |
| 塑料件损坏 | 10 | 5.35 |
| 按钮卡滞 | 8 | 4.28 |
| 插头部位进水 | 6 | 3.20 |
| 衬套偏磨 | 5 | 2.67 |
| 其他 | 4 | 2.14 |
| 合计 | 187 | |
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故障模式占比情况统计
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| 故障模式 | 计数/件 | 占比/% |
| 内部进油 | 65 | 34.76 |
| 漏、憋气 | 46 | 24.60 |
| 触点烧蚀 | 31 | 16.58 |
| 通断行程超差 | 12 | 6.42 |
| 塑料件损坏 | 10 | 5.35 |
| 按钮卡滞 | 8 | 4.28 |
| 插头部位进水 | 6 | 3.20 |
| 衬套偏磨 | 5 | 2.67 |
| 其他 | 4 | 2.14 |
| 合计 | 187 | |
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| 品名 | 幅宽 /cm | 克重 /g·m-2 | 密度/根·(10 cm)-1 | 断裂强力/N |
| 经丝 | 纬丝 | 经向 | 纬向 |
锦丝 平纹绸 | 98±1.5 | ≤78 | 340 | 330 | ≤736 | ≤686 |
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锦丝织物(尼龙布)的物理机械性能[3]
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| 品名 | 幅宽 /cm | 克重 /g·m-2 | 密度/根·(10 cm)-1 | 断裂强力/N |
| 经丝 | 纬丝 | 经向 | 纬向 |
锦丝 平纹绸 | 98±1.5 | ≤78 | 340 | 330 | ≤736 | ≤686 |
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| 测试项目 | 丁腈橡胶5860 | 氟橡胶F209 | 氢化 丁腈橡胶 |
热空气老化 (150 ℃,100 h) | 老化变硬 | 无老化 | 无老化 |
低温-40 ℃ 脆化测试 | 无脆硬 | 脆硬 | 无脆硬 |
耐齿轮油 (SAE85W/90 150 ℃,100 h) | 老化变硬 | 无老化 | 无老化 |
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不同胶料耐温、耐油测试
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| 测试项目 | 丁腈橡胶5860 | 氟橡胶F209 | 氢化 丁腈橡胶 |
热空气老化 (150 ℃,100 h) | 老化变硬 | 无老化 | 无老化 |
低温-40 ℃ 脆化测试 | 无脆硬 | 脆硬 | 无脆硬 |
耐齿轮油 (SAE85W/90 150 ℃,100 h) | 老化变硬 | 无老化 | 无老化 |
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| 主要性能参数 | 聚砜(PSU) | 陶瓷(Al2O3) |
| 耐温性/℃ | -100~175 | 1 400 |
| 相对密度/g·cm-3 | 1.24 | 3.5~4.0 |
| 拉伸强度/MPa | 70.3 | |
| 悬臂梁冲击强度/J·m-2 | 64 | |
| 抗压强度/MPa | | ≥850 |
| 抗弯强度/MPa | | ≥290 |
| 摩擦因数 | 静摩擦因数 | 0.6 | 0.6 |
| 动摩擦因数 | 0.53 | 0.3 |
| 吸水率(24 h,22 ℃)/% | 0.3 | 1.5 |
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衬套材料性能对比
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| 主要性能参数 | 聚砜(PSU) | 陶瓷(Al2O3) |
| 耐温性/℃ | -100~175 | 1 400 |
| 相对密度/g·cm-3 | 1.24 | 3.5~4.0 |
| 拉伸强度/MPa | 70.3 | |
| 悬臂梁冲击强度/J·m-2 | 64 | |
| 抗压强度/MPa | | ≥850 |
| 抗弯强度/MPa | | ≥290 |
| 摩擦因数 | 静摩擦因数 | 0.6 | 0.6 |
| 动摩擦因数 | 0.53 | 0.3 |
| 吸水率(24 h,22 ℃)/% | 0.3 | 1.5 |
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试验次数 /万次 | 试验件试验 结果描述 | 典型图片 |
| 3.12 | 改前件1通断失效 |  |
| 4.20 | 改前件2通断失效 |
| 2.16 | 改前件3通断失效 |
| 8.40 | 改后件1通断失效 |  |
| 9.12 | 改后件2通断失效 |
| 10.2 | 改后件3通断失效 |
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改进前、后电负荷寿命试验结果
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试验次数 /万次 | 试验件试验 结果描述 | 典型图片 |
| 3.12 | 改前件1通断失效 |  |
| 4.20 | 改前件2通断失效 |
| 2.16 | 改前件3通断失效 |
| 8.40 | 改后件1通断失效 |  |
| 9.12 | 改后件2通断失效 |
| 10.2 | 改后件3通断失效 |
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| 故障模式 | 计数/件 | 占比/% |
| 按钮卡滞 | 28 | 23.73 |
| 通断行程超差 | 26 | 22.03 |
| 插头部位进水 | 25 | 21.19 |
| 衬套偏磨 | 16 | 13.56 |
| 塑料件损坏 | 9 | 7.63 |
| 触点烧蚀 | 7 | 5.93 |
| 内部进油 | 4 | 3.39 |
| 其它 | 3 | 2.54 |
| 漏、憋气 | 0 | 0 |
| 合计 | 118 | |
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改进后开关故障占比
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| 故障模式 | 计数/件 | 占比/% |
| 按钮卡滞 | 28 | 23.73 |
| 通断行程超差 | 26 | 22.03 |
| 插头部位进水 | 25 | 21.19 |
| 衬套偏磨 | 16 | 13.56 |
| 塑料件损坏 | 9 | 7.63 |
| 触点烧蚀 | 7 | 5.93 |
| 内部进油 | 4 | 3.39 |
| 其它 | 3 | 2.54 |
| 漏、憋气 | 0 | 0 |
| 合计 | 118 | |
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