JB/T 12157-2015Building construction machinery and equipment - Hydraulic diaphragm wall grab (English PDF)

National Standard of the People's Republic of China

Issued by: Ministry of Industry and Information Technology of the People's Republic of China

Contents

• 1 Scope
• 2 Normative references
• 3 Terms and definitions
• 4 Type, model and parameters
• 4.1 Type
• 4.2 Model
• 4.3 Basic parameters
• 5 Requirements
• 5.1 General requirements
• 5.2 Performance of the complete machine
• 5.3 Main parts and components
• 5.4 Safety
• 5.5 Reliability
• 6 Test methods
• 6.1 Preparation for the test
• 6.2 Test instruments and apparatus
• 6.3 No-load test
• 6.4 Measurement of the main geometric parameters, the mass and the capacity
• 6.5 Measurement of the mean ground contact pressure
• 6.6 Maximum gradeability test
• 6.7 Maximum travel speed test
• 6.8 Measurement of the maximum slewing speed
• 6.9 Hoisting and lowering speed test of the winch
• 6.10 Measurement of the maximum lifting force of the winch
• 6.11 Measurement of the maximum thrust of the hydraulic cylinder
• 6.12 Measurement of the opening and closing time of the grab
• 6.13 Measurement of the verticality of the grab
• 6.14 Noise test
• 6.15 Slewing braking performance test
• 6.16 Travel braking performance test
• 6.17 Measurement of the deviation when travelling in a straight line
• 6.18 Hydraulic oil temperature and sealing test of the hydraulic system
• 6.19 Inspection of the solid particle contamination cleanliness of the hydraulic oil
• 6.20 Reliability test
• 7 Inspection rules
• 7.1 Factory inspection
• 7.2 Type inspection
• 8 Instructions for use
• 9 Marking, packaging, transport and storage
• 9.1 Marking
• 9.2 Packaging
• 9.3 Transport
• 9.4 Storage
• Annex A (informative) Test record forms
• Figure 1 Measurement of the capacity of the bucket
• Figure 2 Geometric dimensions of the track
• Figure 3 Diagram of the travel deviation
• Table 1 Limits of the noise radiated outside the machine
• Table 2 Safety factor of the wire rope of the winch mechanism
• Table 3 Direction of movement of each operating lever
• Table 4 Ball radius
• Table 5 Faults and their criticality factors
• Table 6 Inspection items
• Table A.1 Record form for the measurement of the main structural dimensions and mass parameters
• Table A.2 Record form for the test of the ground contact pressure
• Table A.3 Record form for the gradeability test
• Table A.4 Record form for the travel speed test
• Table A.5 Record of the slewing speed test
• Table A.6 Measurement of the maximum hoisting and lowering speed of the winch
• Table A.7 Record form for the test of the lifting force of the winch
• Table A.8 Record form for the test of the maximum thrust of the hydraulic cylinder
• Table A.9 Record form for the test of the opening and closing time of the grab
• Table A.10 Record form for the test of the verticality of the grab
• Table A.11 Record form for the slewing braking test
• Table A.12 Record form for the travel braking test
• Table A.13 Record form for the measurement of the deviation when travelling in a straight line
• Table A.14 Record form for the measurement of the hydraulic oil temperature
• Table A.15 Record form for the test of the sealing performance of the hydraulic system
• Table A.16 Record form for the reliability test