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This standard is drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 9139-2008 Hydraulic Excavators — Technical Specifications. In addition to a number of editorial changes, the following technical deviations have been made with respect to the GB/T 9139-2008 (the previous edition).
— Normative References is modified (see Clause 2; Clause 2 of Edition 2008);
— Terms and Definitions is modified (see Clause 3; Clause 3 of Edition 2008);
— The requirements of type are modified (see 4.1; 4.1 of Edition 2008);
— The requirements of model are modified (see 4.2; 4.2 of Edition 2008);
— The requirements of main parameters are modified (see 4.4; 4.4 of Edition 2008);
— The general requirements and performance requriements are modified (see 5.1 and 5.2; 5.1 of Edition 2008);
— The safety requirements are modified (see 5.3; 5.4 of Edition 2008);
— The requirements of environmental protection and comfortability are modified (see 5.4; 5.2 and 5.3 of Edition 2008);
— The requirements of delivery inspection and type inspection are modified (see 7.1; 7.1 of Edition 2008);
— The requirements of product nameplate information are modified (see 8.1.2; 8.1.2 of Edition 2008);
— Annex A is changed from normative to informative, and the main parameter list of excavator is modified (see Annex A; Annex A of Edition 2008);
— Bibliography is added (see Bibliography).
This standard was proposed by China Machinery Industry Federation.
This standard was prepared by SAC/TC 334 (National Technical Committee 334 on Earth-moving Machinery of Standardization Administration of China).
The previous editions of this standard are as follows:
This standard specifies the terms and definitions, classification, requirements, test methods, inspection rules, marking, packaging, transportation and storage for hydraulic excavators.
This standard is applicable to the tyred and crawler hydraulic excavators (hereinafter referred to as "excavators") with a mass of not more than 200 000 kg as specified in GB/T 8498.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 3766 Hydraulic Fluid Power — General Rules and Safety Requirements for Systems and Their Components
GB/T 13332 Earth-moving Machinery — Hydraulic Excavators and Backhoe Loaders — Methods of Determining Tool Forces
GB/T 14039-2002 Hydraulic Fluid Power — Fluids — Method for Coding the Level of Contamination by Solid Particles
GB 16710 Earth-moving Machinery — Noise Limits
GB/T 16937 Earth-moving Machinery — Operator's Field of View — Test Method and Performance Criteria
GB/T 18826 1,1,1,2-Tetrafluoroethane (HFC-134a) for Industrial Use
GB/T 19929 Earth-moving Machinery — Crawler Machines — Performance Requirements and Test Procedures for Braking Systems
GB/T 19933.2 Earth-moving Machinery — Operator Enclosure Environment — Part 2: Air Filter Element Test Method
GB/T 19933.4 Earth-moving Machinery — Operator Enclosure Environment — Part 4: Heating, Ventilation and Air Conditioning (HVAC) Test Method and Performance
GB/T 19933.5 Earth-moving Machinery — Operator Enclosure Environment — Part 5: Windscreen Defrosting System Test Method
GB/T 20082 Hydralic Fluid Power — Fluid Contamination-Determination of Particulate Contamination by the Counting Method Using An Optical Microscope
GB 25684.5 Earth-moving Machinery — Safety — Part 5: Requirements for Hydraulic Excavators
GB/T 25685.2 Earth-moving Machinery — Field of Vision of Surveillance and Rear-view Mirrors — Part 2: Performance Criteria
GB/T 28239 Limits and Measurement Methods for Non-road Diesel Engine Specific Fuel Consumption and Specific Oil Consumption
GB/T 30965 Earth-moving Machinery — Determination of Average Ground Contact Pressure for Crawler Machines
GB/T 36693 Earth-moving Machinery — Hydraulic Excavator — Reliability Test Procedures, Failure Classification and Evaluation
JB/T 5946 Engineering Machinery — General Technical Specifications for Paint Coating
JB/T 5947 Engineering Machinery — General Technical Specifications for Packaging
JB/T 9725 Earth-moving Machinery — Method of Type Designation
ISO 11500 Hydraulic Fluid Power — Determination of the Particulate contamination level of a liquid sample by automatic particle counting using the light-extinction principle
3 Terms and Definitions
For the purposes of this document, the terms and definitions given in GB/T 6572 and GB/T 25602 and the following apply.
4 Classification
4.1 Type
Classification according to travel mode:
— Crawler excavator;
— Tyred excavator;
— Walking excavator.
4.2 Model
The product model of excavators shall be in accordance with JB/T 9725 or at the manufacturer's discretion.
4.3 Principal parameters
The operating mass is taken as the principal parameter of excavators.
4.4 Main parameters
See Annex A for the list of the main parameters of excavators.
5 Requirements
5.1 General requirements
5.1.1 Operator's manual of excavators is prepared in accordance with GB/T 25622.
5.1.2 Excavators shall be able to operate normally under ambient conditions with an ambient temperature of -15℃ to +40℃ and an altitude of not more than 2000 m.
5.1.3 The appearance painting quality of excavators shall be in accordance with the requirements of JB/T 5946.
5.1.4 Control devices of excavators shall meet the requirements of GB/T 8595.
5.1.5 The fuel tank capacity of excavators with operating mass greater than 6000 kg shall ensure that the complete machine could be operated normally and continuously for more than 10 h.
5.2 Performance requirements
5.2.1 As for the hydraulic system of excavators, the pollution grade of the solid particles in the oil liquid shall not exceed -/18/15 (which are specified in GB/T 14039-2002).
5.2.2 When the excavators are subjected to the test conditions specified in GB/T 7586, the displacement of the hydraulic cylinder piston rod of excavator boom caused by the leakage in the system shall not be greater than 25 mm/10 min.
5.2.3 When the new machine is shipped from the factory, there shall be no leakage.
5.2.4 The gradeability of tyred excavator shall not be less than 35% and that of the crawler excavator shall not be less than 50%.
5.2.5 The straight deviation of a crawler excavator running in straight line shall not be greater than 5% of the measured distance.
5.2.6 Under the conditions specified in GB/T 36693, the reliability of excavators shall meet the following requirements:
— The mean time between failure (MTBF) of excavators with operating mass of 6000 kg or less shall not be less than 300h, and the MTBF of excavators with operating mass above 6000kg shall not be less than 600h;
— The operational availability shall not be less than 90%.
5.3 Safety requirements
5.3.1 The excavators shall be provided with safety labels complying with those specified in GB 20178.
5.3.2 The operator's field of view shall meet the requirements of GB/T 16937. The excavators can be equipped with corresponding auxiliary equipment (for example, rearview mirrors, monitoring devices, etc.) to supplement the direct field of view. The field of view of the rearview mirror and monitoring device shall meet the requirements of GB/T 25685.2.
5.3.3 The front window of the operator's cab shall be equipped with a wiper and a cleaner.
5.3.4 Electrical control system shall be equipped with foolproof overload protective device.
5.3.5 The excavators shall meet the requirements of the applicable mandatory provisions of GB 25684.5.
5.3.6 The excavators should meet the requirements of the applicable recommendatory provisions of GB 25684.5.
Foreword II 1 Scope 2 Normative References 3 Terms and Definitions 4 Classification 6 Test Methods 7 Inspection Rules Annex A (Informative) Main Parameters of Excavator Bibliography
