GB/T 9142-2021 English PDF

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GB/T 9142-2021: Building construction machinery and equipment - Concrete mixer
Status: Valid

GB/T 9142: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 9142-2021	1039	Add to Cart	7 days	Building construction machinery and equipment - Concrete mixer	Valid
GB/T 9142-2000	RFQ	ASK	7 days	Concrete mixers	Obsolete
GB/T 9142-1988	RFQ	ASK	3 days	Concrete mixers--Specification	Obsolete

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Basic data

Standard ID: GB/T 9142-2021 (GB/T9142-2021)
Description (Translated English): Building construction machinery and equipment - Concrete mixer
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: P97
Word Count Estimation: 57,580
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 9142-2021: Building construction machinery and equipment - Concrete mixer

---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.
Building construction machinery and equipment - Concrete mixer ICS 91.220 CCSP97 National Standards of People's Republic of China Replace GB/T 9142-2000 Building construction machinery and equipment concrete mixer Released on 2021-10-11 2022-05-01 implementation State Administration for Market Regulation Issued by the National Standardization Management Committee

Table of contents

Foreword Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Classification, model and parameters 2 4.1 Classification and code 2 4.2 Main parameters 3 4.3 Model 4 4.4 Basic parameters 4 5 Technical requirements 8 5.1 Overall requirements 8 5.2 Water supply system 9 5.3 Feeding mechanism 10 5.4 Stirring device 10 5.5 Security 10 5.6 Manufacturing and assembly quality requirements 11 6 Test method 12 6.1 Test preparation 12 6.2 Stirring performance test 13 6.3 Determination of the energy consumption of the whole machine and the power of the main mechanism 21 6.4 Determination of cycle time 21 6.5 Determination of the residual rate of cement in the hopper and the intermediate hopper 21 6.6 Determination of overload capacity and dry stirring capacity 21 6.7 Determination of noise 22 6.8 Performance measurement of water supply system 22 6.9 Determination of spilled material, spilled material, slurry overflow, and material overflow rate 23 6.10 Handle operation force measurement 23 6.11 Quality inspection of mixer manufacturing and assembly 23 6.12 Drag test 24 6.13 Appearance quality assessment 24 6.14 Data collation and test report 24 6.15 Reliability test 24 7 Inspection rules 28 7.1 Division of inspection 28 7.2 Factory inspection 28 7.3 Type inspection 28 8 Marking, packaging, transportation and storage 28 8.1 Sign 28 8.2 Packaging 29 8.3 Transportation and storage 29 Appendix A (Normative) Homogeneity Test Record Form 30 Appendix B (Informative) Test Record Form 33 Appendix C (Normative) Appearance Quality Assessment Rules for Mixers 45 Appendix D (Informative) Reliability Test Record Form 47 Appendix E (Normative) Failure Classification 52

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents" Drafting. This document replaces GB/T 9142-2000 "Concrete Mixer", compared with GB/T 9142-2000, except for structural adjustment and editorial In addition to the changes, the main technical changes are as follows. a) The scope of application of this document has been changed (see Chapter 1); b) Deleted the nominal capacity, periodic concrete mixer, self-falling concrete mixer, forced concrete mixer, and loading time Time, centralized discharge port mixer, flat long discharge port mixer, working cycle, failure, basic failure, related failure, non Related failures, non-basic failures, failure criticality factor, equivalent failures, average working time before the first failure, and average no failures The definition of working hours and reliability (see the.2000 edition of 3.1, 3.2, 3.3, 3.4, 3.10, 3.12, 3.13, 3.14, 3.15, 3.16, 3.17, 3.18, 3.19, 3.20, 3.21, 3.22, 3.23, 3.24); c) Added the definition of standard test conditions (see 3.1); d) The definitions of coarse aggregate, homogeneous concrete, mixing time and discharge time have been changed (see 3.2, 3.3, 3.4, 3.5, 3.5, 3.6, 3.7, 3.11); e) The rated capacity and feed capacity of the mixer have been changed (see Chapter 4, Chapter 4 of the.2000 edition); f) The technical requirements for mixing time, residual rate and reasonable viscosity ratio have been changed (see Chapter 5, Chapter 5 of the.2000 edition); g) The test method is changed (see Chapter 6, Chapter 6 of the.2000 edition); h) The requirements of the product manual have been changed (see 8.2.3, 8.2.3 of the.2000 edition); i) Deleted the content of the air content test of the concrete mixture in the appendix (see Appendix A of the.2000 edition); j) Deleted the content of the dry apparent density test of the saturated surface of gravel and pebbles in the appendix (see Appendix B of the.2000 edition); k) The homogeneity test record table has been added (see Table A.1). Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying patents. This document was proposed by China Machinery Industry Federation. This document is under the jurisdiction of the National Construction Machinery and Equipment Standardization Technical Committee (SAC/TC328). This document was drafted by. Zoomlion Heavy Industry Co., Ltd., National Construction and Urban Construction Machinery Quality Supervision and Inspection Center, Shandong Yuanyou Heavy Industry Branch Technology Co., Ltd., Fujian South Road Machinery Co., Ltd., Shantui Jianyou Machinery Co., Ltd., Langfang Zhongjian Machinery Co., Ltd., Qingdao Branch Nile Machinery Equipment Co., Ltd., Sany Heavy Industry Co., Ltd., Zhengzhou Sanhe Hydraulic Machinery Co., Ltd., Hangzhou Jianghe Mechanical and Electrical Equipment Engineering Limited company. The main drafters of this document. Guo Shoujun, Mo Jinfeng, Wu Binxing, Fu Zhongxuan, Wang Rui, Li Hui, Cai Chunjie, Jiao Yumin, Tang Ming, Pang Zengling, Geng Guijun, Zhang Rui, Jiang Zhihui, Wang Liangqiang, Feng Xinhong. The previous releases of this document and the documents it replaced are as follows. ---GB/T 9142-1988, GB/T 9142-2000; ---This is the second revision. Building construction machinery and equipment concrete mixer

1 Scope

This document specifies the classification, model and parameters, technical requirements, test methods, inspection rules and signs, packaging, and transportation of concrete mixers. And storage. This document is applicable to periodic concrete mixing with a rated capacity of 10000L or less (including 10000L) specified in GB/T 25637.1 Mixer (hereinafter referred to as the mixer), and the mixer used in the concrete mixing station (building).

2 Normative references

The content of the following documents constitutes an indispensable clause of this document through normative references in the text. Among them, dated quotations Only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to This document. GB/T 3766 General rules and safety requirements for hydraulic transmission systems and their components GB/T 6003.2 Technical requirements and inspection of test sieves Part 2.Metal perforated plate test sieves GB/T 7920.4 Concrete machinery terminology GB/T 7935 General technical conditions for hydraulic components GB/T 9969 General Rules for the Use of Industrial Products GB/T 10171 Construction Machinery and Equipment Concrete Mixing Plant (Building) GB/T 13306 signs GB/T 18576 Terms and Definitions of Construction Machinery and Equipment GB/T 25637.1 Construction Machinery and Equipment Concrete Mixer Part 1.Terminology and Commercial Specifications GB/T 37168 Construction machinery and equipment, concrete and mortar preparation machinery and equipment safety requirements GB/T 50080 Standard for test method of ordinary concrete mixture performance GB/T 50081 Standard Test Method for Physical and Mechanical Properties of Concrete JB/T 3249 Construction machinery guard plate and guard JB/T 11858 Construction machinery and equipment concrete mixer blades and liners JB/T 13065 General rules for reliability assessment of construction machinery and equipment JB/T 13712 Noise measurement methods and limits of construction machinery and equipment JG/T 5082.1 General technical requirements for welding parts of construction machinery and equipment JGJ52 Standard for the quality and inspection method of sand and stone for ordinary concrete JGJ55 Design Specification for Ordinary Concrete Mix Proportion

3 Terms and definitions

GB/T 7920.4, GB/T 10171, GB/T 18576, GB/T 25637.1 and the following terms and definitions apply to this document. ......

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