JB/T 14454-2024 Earth-moving machinery - Electric hydraulic excavators with external power supply device - Test methods
1 Scope
This document describes the performance test methods and reliability test methods for electric hydraulic excavators with external power supply device.
This document is applicable to the performance tests and reliability tests of crawler electric excavators with a working mass of not more than 50,000 kg, which are continuously supplied by external cables during operation.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions 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 2900.1 Electrotechnical terminology - Fundamental terms
GB/T 4208 Degrees of protection provided by enclosure (IP code)
GB 18613 Minimum allowable values of energy efficiency and energy efficiency grades for small and medium three-phase asynchronous motors
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 19930 Earth-moving machinery - Tip-Over Protection Structure (TOPS) for compact excavators - Laboratory tests and performance requirements
GB/T 19930.2 Earth-moving machinery - Laboratory tests and performance requirements for protective structures of excavators - Part 2: Roll-over protective structures (ROPS) for excavators of over 6 t
GB/T 19932 Earth-moving machinery - Hydraulic excavators - Laboratory tests and performance requirements for operator protective guards
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 Hydraulic fluid power - Fluid contamination - Determination of particulate contamination by the counting method using an optical microscope
GB/T 20418 Earth-moving machinery - Lighting, signaling, and marking lights, and reflex-reflector devices
GB/T 21153 Earth-moving machinery - Units for dimensions, performance and capacities and their measurement accuracies
GB/T 21154-2014 Earth-moving machinery - Methods of measuring the masses of whole machines, their equipment and components
GB/T 21154 Earth-moving machinery - Methods of measuring the masses of whole machines, their equipment and components
GB/T 21155 Earth-moving machinery - Machine-mounted audible travel alarms and forward horns - Test methods and performance criteria
GB/T 21941 Earth-moving machinery - Volumetric ratings for hoe-type and grab-type buckets of hydraulic excavators and backhoe loaders
GB/T 21942 Earth-moving machinery - Loader and front loading excavator buckets - Volumetric ratings
GB/T 25614 Earth-moving machinery - Determination of sound power level - Dynamic test conditions
GB/T 25615 Earth-moving machinery - Determination of emission sound pressure level at operator’s position - Dynamic test conditions
GB/T 25685.1 Earth-moving machinery - Field of vision of surveillance and rear-view mirrors - Part 1: Test methods
GB/Z 26139 Earth-moving machinery - Guidelines for assessment of exposure to whole-body vibration of ride-on machines - Use of harmonized data measured by international institutes, organizations and manufacturers
GB 30254 Minimum allowable values of energy efficiency and the energy efficiency grades for cage three-phase high voltage induction motor
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
GB/T 37163 Hydraulic fluid power - Determination of the particulate contamination level of a liquid sample by automatic particle counting using the light-extinction principle
GB/T 38943.1-2020 Earth-moving machinery - Electrical safety of machines utilizing electric drives and related components and systems - Part 1: General requirements
JB/T 14453 Earth-moving machinery - Electric hydraulic excavators with external power supply device - Technical specifications
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 6572, GB/T 2900.1, and JB/T 14453 apply.
4 Pretest preparation
4.1 Measurement accuracy
The measurement accuracy shall meet the requirements of GB/T 21153.
4.2 Preparation of technical data
4.2.1 Operator's manual of crawler electric excavators with external power supply device (hereinafter referred to as "electric excavator").
4.2.2 The technical parameters of the electric excavator shall be recorded in Table A.1.
4.3 Preparation of electric excavator
4.3.1 The whole machine shall be fully equipped, with sufficient lubricating oil, cooling water, and other fluids filled according to the requirements, and the on-board tools shall be properly prepared.
4.3.2 The parameters of all hydraulic and pneumatic elements shall be adjusted to the specified values, and the hydraulic oil temperature shall reach 50°C±3°C.
4.3.3 The electric excavator shall undergo sufficient running-in before the test.
Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Pretest preparation 5 Stationary test 6 Protective equipotential bonding circuit continuity 7 Insulation resistance test 8 Voltage withstand test 9 Start-stop test 10 Speed regulation test 11 Emergency stop function test 12 Determination of tip-over moment 13 Determination of tool force 14 Driving performance tests 15 Swing test 16 Noise determination 17 Vibration test 18 Lift capacity test 19 Electromagnetic compatibility test 20 Verification of motor energy efficiency 21 Verification of air conditioning refrigerant 22 Test of lighting, signaling and marking lights, and reflex-reflector devices 23 Test of machine-mounted audible travel alarms and forward horns 24 Test of surveillance and rear-view mirrors 25 Test of operator protective guards 26 Tests of tip-over protection structure (TOPS) of compact electric excavators and roll-over protective structures (ROPS) for electric excavators of 6t 27 Test of operator enclosure environment 28 Electric excavator operating test 29 Strength test 30 Cable sag test 31 Idling test 32 Hydraulic system test 33 Safety verification of motors 34 Overcurrent/short-circuit protection test 35 Ingress protection (IP) test 36 Ramp parking test 37 Functional test of external power supply device 38 Tests for other safety requirements 39 Reliability test Annex A (Informative) Technical parameters form of electric excavator Annex B (Informative) Electric excavator test record form Figure 1 a) Overall dimension diagram of trailer type external power supply device Figure 1 b) Overall dimension diagram of crawler type external power supply device Figure 1 c) Overall dimension diagram of fixed rotation type external power supply device Figure 1 d) Overall dimension diagram of fixed type external power supply device Figure 2 Cable sag test Figure 3 Overcurrent/short-circuit protection test circuit Table 1 Failure classification and assessment criteria Table A.1 Technical parameters form of electric excavator Table B.1 Determination record form of base machine overall dimensions of electric excavator Table B.2 Determination record form of overall dimensions of external power supply device Table B.3 Electric excavator reliability test shift record form
