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GB/T 9142-2021Building construction machinery and equipment - Concrete mixers (English PDF)

建筑施工机械与设备混凝土搅拌机

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

October 11, 2021

Implementation date

May 1, 2022

Scope

GB/T 9142-2021 is the English-translated version of 建筑施工机械与设备混凝土搅拌机.

GB/T 9142-2021 is the Chinese standard "Building construction machinery and equipment - Concrete mixers". Its scope clause reads: 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). Its clauses include terms and definitions.

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Document preview — GB/T 9142-2021

National Standard of the People's Republic of China

ICS: 91.22
Classification: P 97

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

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

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.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 56 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 50081

Cited by

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