GB/T 34025-2017 English PDF

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GB/T 34025-2017: Pinion type progressive safety device for builder hoist
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 34025-2017	279	Add to Cart	3 days	Pinion type progressive safety device for builder hoist	Valid

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Basic data

Standard ID: GB/T 34025-2017 (GB/T34025-2017)
Description (Translated English): Pinion type progressive safety device for builder hoist
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J80
Classification of International Standard: 91.140.90
Word Count Estimation: 14,190
Date of Issue: 2017-07-12
Date of Implementation: 2018-02-01
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

GB/T 34025-2017: Pinion type progressive safety device for builder hoist

---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.
Pinion type progressive safety device for builders hoist ICS 91.140.90 J80 National Standards of People's Republic of China Construction gears progressive anti - fall safety devices for lifts 2017-07-12 released 2018-02-01 Implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Management Committee released Directory Preface I 1 Scope 1 2 normative reference document 1 3 Terms and definitions 1 4 main parameter 2 Technical requirements 2 6 Requirements 4 7 Test Method 5 8 Inspection rules 9 9 signs, marking, packaging and storage 11

Foreword

This standard is drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed by the China Machinery Industry Federation. This standard is standardized by the National Standardization Technical Committee for Lifting and Upgrading Platform (SAC/TC335). The drafting of this standard. Shanghai Institute of Building Science and Technology Development Co., Ltd., Chongqing Special Equipment Testing and Research Institute, Kunshan City Jingpu machinery factory, Beijing Construction Machinery Technology Co., Ltd., Xiongyu Heavy Industry Group Co., Ltd., Zhejiang full Machinery Co., Ltd. Division, Hangzhou Heng Peng Electrical and Mechanical Equipment Co., Ltd., China Construction Education Association Construction Machinery Vocational Education Committee, Beijing Construction Machinery Research Academy. The main drafters of this standard. Mu Minghao, Zou Dingdong, Zhou Shaoen, Chen Aihua, Tian Guangfan, Xie Jiaxue, Xu Shugen, Xia Zhenyong, Lu Weitao, Deng Mingxu, Liu Huiguang, Wang Chunzhuo, Zhang Juan, Yin Wenjing. Construction gears progressive anti - fall safety devices for lifts

1 Scope

This standard specifies the terms and definitions and technical requirements for the use of gear progressive anti-fall safety devices for construction lifts (hereinafter referred to as "lifts"), Use requirements, test methods, inspection rules and signs, marking, packaging and storage. This standard applies to the construction of the lift gear progressive safety device (hereinafter referred to as "safety device"), other equipment used in the same safety device Also refer to the use. This standard does not apply to safety devices manufactured prior to the implementation of this standard.

2 normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article Pieces. For undated references, the latest edition (including all modifications) applies to this document. GB/T 1239.2 Cold rolled cylindrical helical springs - Technical conditions - Part 2. Compression springs GB/T 1972 disc spring GB/T 3480.5 Calculation of carrying capacity of spur gears and helical gears - Part 5. Strength and quality of materials GB/T 13306 signs General specification for packaging of electromechanical products GB/T 13384 Technical condition of hot - rolled cylindrical helical compression spring GB/T 23934 Design Calculation of Cylindrical Helical Spring GB/T 23935 GB/T 26557-2011 hanging cage with vertical orientation of the dual-use construction of the lift ISO 6336-1 Calculation of the carrying capacity of spur gears and helical gears - Part 1. Fundamentals, overviews and general effects coefficients (Calcula- tionofloadcapacityofspurandhelicalgears-Part 1. Basicprinciples, introductionandgeneralinflu- encefactors ISO 6336-3 Spur gear and helical gear carrying capacity - Part 3. Calculation of tooth root bending strength (Calculationofload capacityofspurandhelicalgears-Part 3. Calculationoftoothbendingstrength)

3 terms and definitions

The following terms and definitions apply to this document. 3.1 Anti - fall safety device safetydevice Overspeed safety device overspeedsafetydevice So that the speed of the cage or counterweight (hereinafter referred to as "protection target") to stop and maintain the state of the mechanical device. 3.2 Progressive anti-fall safety device progressivesafetydevice Progressive overspeed safety device progressiveoverspeedsafetydevice The initial braking force is adjustable, in the process of stopping the protection of the target braking force gradually increased safety device. ......

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