This standard specifies working grade, basic parameters, technical requirements, test methods, inspection rules, marking and packaging of chain hoists.
This standard is applicable to general-purpose chain hoists driven by involute straight spur gear, other structural types of chain hoists may refer to this standard.
2 Normative References
The following standards contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments to (excluding corrections to), or revisions of, any of these publications do not apply. However, the parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards. For undated references, the latest edition of the normative document referred to applies.
GB/T 13384 General Specifications for Packing of Mechanical and Electrical Product
GB/T 20946 Short Link Chain for Lifting Purposes - General Conditions of Acceptance (GB/T 20946-2007, ISO 1834: 1999, IDT)
GB/T 20947 Short-link Chain for Lifting Purposes--Grade T (Types T, DAT and DT) Fine-tolerance Hoist Chain (GB/T 20947-2007, ISO 3077: 2001, IDT)
JB/T 4207.1 Hooks for manually operated lifting equipment
JB/T 4207.2 Latch kits of hooks used for hand-operated hoisting appliances
3 Working Grade
Foreword i 1 Scope 2 Normative References 3 Working Grade 4 Basic Parameters 5 Technical Requirements 6 Test Method 7 Inspection Rules 8 Marking and Packaging 9 Warranty Period
1 Scope
This standard specifies working grade, basic parameters, technical requirements, test methods, inspection rules, marking and packaging of chain hoists.
This standard is applicable to general-purpose chain hoists driven by involute straight spur gear, other structural types of chain hoists may refer to this standard.
2 Normative References
The following standards contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments to (excluding corrections to), or revisions of, any of these publications do not apply. However, the parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards. For undated references, the latest edition of the normative document referred to applies.
GB/T 13384 General Specifications for Packing of Mechanical and Electrical Product
GB/T 20946 Short Link Chain for Lifting Purposes - General Conditions of Acceptance (GB/T 20946-2007, ISO 1834: 1999, IDT)
GB/T 20947 Short-link Chain for Lifting Purposes--Grade T (Types T, DAT and DT) Fine-tolerance Hoist Chain (GB/T 20947-2007, ISO 3077: 2001, IDT)
JB/T 4207.1 Hooks for manually operated lifting equipment
JB/T 4207.2 Latch kits of hooks used for hand-operated hoisting appliances
3 Working Grade
Contents of JB/T 7334-2007
Foreword i
1 Scope
2 Normative References
3 Working Grade
4 Basic Parameters
5 Technical Requirements
6 Test Method
7 Inspection Rules
8 Marking and Packaging
9 Warranty Period
