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GB/T 39622-2020: Gravity dredging grab
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 39622-2020 | English | 209 |
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Gravity dredging grab
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GB/T 39622-2020
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PDF similar to GB/T 39622-2020
Standard similar to GB/T 39622-2020 GB/T 18572 GB/T 42341 GB/T 40502 Basic data | Standard ID | GB/T 39622-2020 (GB/T39622-2020) | | Description (Translated English) | Gravity dredging grab | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | U34 | | Classification of International Standard | 47.020.99 | | Word Count Estimation | 11,168 | | Date of Issue | 2020-12-14 | | Date of Implementation | 2021-07-01 | | Quoted Standard | GB/T 191; GB/T 230.1; GB/T 1591; GB/T 1800.2; GB/T 8923.1; GB/T 11345; CB/T 3513; JB/T 5000.6; JB/T 5000.7 | | Regulation (derived from) | National Standard Announcement No. 28 of 2020 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | | Summary | This standard specifies the classification, structure, size and model, technical requirements, quality inspection, inspection rules, marking, packaging, transportation and storage requirements of gravity grabs for dredgers. This standard applies to the production, inspection and use of gravity grabs for dredgers. | GB/T 39622-2020: Gravity dredging grab---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
(Dredger Gravity Grab)
ICS 47:020:99
U34
National Standards of People's Republic of China
Dredger Gravity Grab
2020-12-14 release
2021-07-01 implementation
State Administration for Market Regulation
Issued by the National Standardization Management Committee
Table of contents
Preface Ⅲ
1 Scope 1
2 Normative references 1
3 Terms and definitions 1
4 Classification, structure, size and model 2
5 Technical requirements 4
6 Quality inspection 5
7 Inspection rules 6
8 Marking, packaging, transportation and storage 7
Foreword
This standard was drafted in accordance with the rules given in GB/T 1:1-2009:
This standard was proposed by the Ministry of Transport of the People's Republic of China:
This standard is under the jurisdiction of the National Port Standardization Technical Committee (SAC/TC530):
Drafting organizations of this standard: CCCC Guangzhou Waterway Bureau Co:, Ltd:, China Communications Construction Co:, Ltd:, CCCC Dredging (Group) Co:, Ltd:
Co:, Ltd:, CCCC Tianjin Waterway Bureau Co:, Ltd:, CCCC Shanghai Waterway Bureau Co:, Ltd:, CCCC Dredging Technology and Equipment National Engineering Research Center have
Co:, Ltd:, CCCC South China Communications Construction Co:, Ltd:, CCCC Guangzhou Shipping Equipment Co:, Ltd:, CCCC Yantai Environmental Dredging Co:, Ltd:
The main drafters of this standard: Liu Jian, Tian Junfeng, Liu Nianjun, Li Daqing, Liu Shaoqun, Wei Xingjing, Li Xiaoyan, Liu Jing, Hong Guojun, Cai Xianling,
Liu Zhuohuan, Su Yanjun, Hu Yindong, Chen Weimin, Li Ning, Xu Ermin:
Dredger Gravity Grab
1 Scope
This standard specifies the classification, structure, size and model, technical requirements, quality inspection, inspection rules, and standards of gravity grabs for dredgers:
Log, packaging, transportation and storage requirements:
This standard applies to the production, inspection and use of gravity grabs for dredgers:
2 Normative references
The following documents are indispensable for the application of this document: For dated reference documents, only the dated version applies to this article
Pieces: For undated references, the latest version (including all amendments) applies to this document:
GB/T 191 Packaging, Storage and Transportation Graphic Mark
GB/T 230:1 Rockwell Hardness Test of Metallic Materials Part 1: Test Method
GB/T 1591 Low-alloy high-strength structural steel
GB/T 1800:2 Product Geometric Technical Specification (GPS) Linear Dimension Tolerance ISO Code System Part 2: Standard Tolerance Zone
Code and limit deviation table of hole and shaft
GB/T 8923:1 Visual assessment of surface cleanliness of steel surface treatment before coating-Part 1: Uncoated steel
The corrosion grade and treatment grade of the surface and the steel surface after the original coating has been completely removed
GB/T 11345 Ultrasonic testing technology, testing level and assessment for non-destructive testing of welds
CB/T 3513 Technical requirements for quality acceptance of ship coating
JB/T 5000:6 General technical conditions for heavy machinery Part 6: Steel castings
JB/T 5000:7 General technical conditions for heavy machinery Part 7: Repair welding of steel castings
3 Terms and definitions
The following terms and definitions apply to this document:
3:1
Gravitydredginggrab
It is a dredging tool composed of two bucket bodies, relying on its own weight and the movement of a wire rope pulley to realize the opening and closing of the bucket body:
3:2
Piledupvolumeline
When the gravity grab bucket is closed, the top edge of the bucket body is 30° elevation line:
3:3
Horizontal volume brimfulvolume
When the gravity grab is closed, the volume formed by the horizontal volume line of the grab and the bucket body:
3:4
Piledupvolume
When the gravity grab bucket is closed, the volume composed of the cone surface of the grab bucket accumulation volume line and the bucket body:
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