1 Scope
This standard specifies the terms and definitions, classification and specification, requirements, test methods, inspection rules, product identification, instructions, transportation, packaging and storage of loader cranes.
This standard is applicable to the loader cranes (hereinafter referred to as cranes) installed on vehicles, and other installation forms of cranes may be implemented by reference.
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 2893 Safety colours
GB 2894 Safety signs and guideline for the use
GB/T 3766 Hydraulic fluid power—General rules relating to systems
GB/T 3811-2008 Design rules for cranes
GB/T 5972 Cranes—Wire ropes—Care, maintenance, installation, examination and discard
GB 6067.1 Safety rules for lifting appliances—Part 1: General
GB/T 6974.1 Cranes—Vocabulary—Part 1: General
GB/T 7935 Hydraulic fluid power—General requirements for hydraulic components
GB/T 9969 General principles for preparation of instructions for use of industrial products
GB/T 10051.1 Lifting hooks—Part 1: Mechanical properties, lifting capacities, stresses and materials
GB/T 13306 Plates
GB/T 19678 Preparation of instructions—Structuring, content and presentation
GB 20062 Mobile crawler crane—Limits and measurement methods for operating noise
GB/T 21457 Cranes and related equipment—Accuracy requirements for measuring parameters during testing
GB/T 25195.1 Cranes—Graphic symbols—Part 1: General
GB/T 26473-2011 Cranes—Safety requirements for loader cranes
JB/T 2300 Slewing bearing
JB/T 5945 Engineering machinery—General technical specifications for assembling
JB/T 5946 Engineering machinery—General technical specifications for paint coating
JB/T 9737 Mobile cranes—Solid particle pollution grade, measurement and selection of the hydraulic fluid
QC/T 252 Type test regulations for special automobile
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 6974.1 and GB/T 26473 as well as the following apply. For the convenience of application, some terms and definitions in GB/T 6974.1 and GB/T 26473 are listed repeatedly as follows.
3.1
loader crane
power-driven crane consisting of a turntable above the base and a boom system fixed to the top of the turntable, installed on a vehicle [including a trailer(s)] for loading and unloading goods
Note 1: It is revised from GB/T 26473-2011, Definition 3.1.1.
Note 2: See Annex B of GB/T 26473-2011 for crane layout and installation.
3.2
maximum hoisting moment
maximum value of the product of the rated capacity and the corresponding operating range ability
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Classification and specification
5 Requirements
6 Test method
7 Inspection rules
8 Product identification, instructions, transportation, packaging and storage
Annex A (Informative) Schematic diagram of the main structure of crane
Annex B (Informative) Test record
Annex C (Normative) Structural stress test method
Annex D (Normative) Test items
Bibliography
Figure 1 Determination of distance between outrigger
Figure 2 Determination of lifting height
Figure 3 Determination of boom length of straight-boom-type crane
Figure 4 Determination of boom length of articulating-boom-type crane
Figure A.1 Schematic diagram of the main structure of straight-boom-type crane
Figure A.2 Schematic diagram of the main structure of articulating-boom-type crane
Table 1 Maximum hoisting capacity parameters
Table 2 Safety requirements for wire rope clamp connection
Table 3 Test conditions and number of cycles in the operation reliability test
Table 4 Total operation time of operation reliability test
Table B.1 Record of structural parameters measurement of crane
Table B.2 Record of operating speed measurement
Table B.3 Record of boom derricking time and stabilizer extend & retract time
Table B.4 Record of static load test
Table B.5 Record of structural static stress test In: MPa
Table B.6 Record of operation reliability test
Table C.1 Structural stress test conditions and loads
Table C.2 Strength safety factor
Table C.3 Allowable stress of steel and weld of structural members
Table D.1 Test items
