CN215898991U - 一种人工挖孔桩施工专用安全帽 - Google Patents
一种人工挖孔桩施工专用安全帽 Download PDFInfo
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- CN215898991U CN215898991U CN202121387215.5U CN202121387215U CN215898991U CN 215898991 U CN215898991 U CN 215898991U CN 202121387215 U CN202121387215 U CN 202121387215U CN 215898991 U CN215898991 U CN 215898991U
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- 238000010276 construction Methods 0.000 title claims abstract description 25
- 239000007789 gas Substances 0.000 claims abstract description 33
- 238000012544 monitoring process Methods 0.000 claims abstract description 23
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000001301 oxygen Substances 0.000 claims abstract description 22
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 22
- 231100000614 poison Toxicity 0.000 claims abstract description 22
- 230000007096 poisonous effect Effects 0.000 claims abstract description 22
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 239000000523 sample Substances 0.000 claims description 6
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 3
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims description 3
- 239000003345 natural gas Substances 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims 1
- 238000005286 illumination Methods 0.000 abstract description 6
- 230000036760 body temperature Effects 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 3
- 231100000331 toxic Toxicity 0.000 description 4
- 230000002588 toxic effect Effects 0.000 description 4
- 210000003128 head Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000001061 forehead Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Application Number | Priority Date | Filing Date | Title |
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CN202121387215.5U CN215898991U (zh) | 2021-06-22 | 2021-06-22 | 一种人工挖孔桩施工专用安全帽 |
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CN202121387215.5U CN215898991U (zh) | 2021-06-22 | 2021-06-22 | 一种人工挖孔桩施工专用安全帽 |
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CN215898991U true CN215898991U (zh) | 2022-02-25 |
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CN202121387215.5U Active CN215898991U (zh) | 2021-06-22 | 2021-06-22 | 一种人工挖孔桩施工专用安全帽 |
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CN (1) | CN215898991U (zh) |
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2021
- 2021-06-22 CN CN202121387215.5U patent/CN215898991U/zh active Active
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Legal Events
Date | Code | Title | Description |
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GR01 | Patent grant | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20240329 Address after: Room 2005, Block A, Zhengshang International Building, South Qili Henan Road, Zhengdong New District, Zhengzhou City, Henan Province, 450000 Patentee after: China Railway First Group Seventh Engineering Co.,Ltd. Country or region after: China Address before: 712099 No.10, 4th section road, Wujiabao, Qindu District, Xianyang City, Shaanxi Province Patentee before: CHINA RAILWAY FIRST GROUP RAILWAY CONSTRUCTION Co.,Ltd. Country or region before: China Patentee before: CHINA RAILWAY FIRST GROUP Co.,Ltd. |