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GB/T 43756-2024Design specifications for forklift trucks (English PDF)

叉车设计规范

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

March 15, 2024

Implementation date

October 1, 2024

Scope

GB/T 43756-2024 is the English-translated version of 叉车设计规范.

GB/T 43756-2024 is the Chinese standard "Design specifications for forklift trucks". Its scope clause reads: This document establishes the overall, structural, mechanical, electrical, hydraulic and safety design principles for forklifts, and specifies the design and calculation requirements and methods.

This document applies to counterbalanced forklifts, reach forklifts, side forklifts, leg forklifts, pallet forklifts, etc. Stacker and three-way stacker forklift. Other types of forklifts are used for reference.

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Document preview — GB/T 43756-2024

National Standard of the People's Republic of China

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Preface
1 Scope
2 Normative references
3 Terms and definitions, symbols and codes
3.1 Terms and Definitions
3.2 Symbols and codes
4 Overall Design
4.1 Basic structure
4.2 Loads and load combinations
4.2.1 General
4.2.2 Calculation of load
4.2.3 Load combination
4.3 Self-weight, center of mass and bridge load
4.3.1 Calculation of deadweight and center of mass position
4.3.2 Measurement of centroid position
4.3.3 Bridge Load
4.4 Maneuverability
4.4.1 Minimum outside turning radius
4.4.2 Minimum right-angle stacking channel width
4.5 Dynamic characteristics
4.5.1 Engine selection
4.5.2 Motor selection
4.5.3 Controller design and selection
4.5.4 Total speed ratio of internal combustion forklift transmission system
4.5.5 Transmission system speed ratio distribution principle
4.6 Traction characteristics
4.6.1 Traction and speed
4.6.2 Maximum traction
4.6.3 Climbing ability
4.7 Braking performance
4.7.1 Driving braking torque
4.7.2 Parking Braking Torque
4.8 Overall stability
5 Structure
5.1 General Principles for Calculation of Metal Structural Parts
5.2 Connection calculation of metal structures
5.2.1 Welding
5.2.2 Bolt connection
5.2.3 Pin connection
5.3 Calculation of portal structure
5.3.1 Estimation of portal frame structure strength
5.3.2 Mast structure strength verification
5.3.3 Analysis of local bending stress of portal frame
5.3.4 Composite stress of portal frame
5.3.5 Contact stress analysis of gantry rollers
5.4 Fork frame structure verification
5.5 Frame structure verification
5.5.1 General rules for structural verification
5.5.2 Structural verification method
6 Machinery
6.1 Lifting system
6.1.1 Basic dimensions of mast
6.1.2 Component Verification
6.2 Steering system
6.2.1 Steering resistance torque
6.2.2 Hydraulic cylinder thrust
6.2.3 Steering mechanism
6.2.4 Steering axle body
6.3 Drive system
6.3.1 Clutch
6.3.2 Torque Converter
6.3.3 Transmission
6.3.4 Coupling
6.3.5 Drive axle
6.4 Braking system
6.5 Wheel
7 Electrical Equipment
7.1 Basic requirements
7.2 Power supply and power supply
7.2.1 Power supply
7.2.2 Control power supply
7.2.3 Power supply system
7.3 Electrical control system
7.3.1 Electrical control components
7.3.2 Controller
7.3.3 Control system design
7.4 Electric motor
7.5 Auxiliary electrical equipment
7.5.1 Instrumentation
7.5.2 Lighting and signalling devices
7.6 Communication
7.7 Wires and cables
7.7.1 General requirements
7.7.2 Wire laying
8 Hydraulic
8.1 Basic requirements
8.2 Hydraulic system circuit
8.2.1 General requirements

1 Scope

This document establishes the overall, structural, mechanical, electrical, hydraulic and safety design principles for forklifts, and specifies the design and calculation requirements and methods.

This document applies to counterbalanced forklifts, reach forklifts, side forklifts, leg forklifts, pallet forklifts, etc.

Stacker and three-way stacker forklift. Other types of forklifts are used for reference.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document.

For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to

This document.

GB/T 985.1 Recommended grooves for gas welding, arc welding, gas shielded welding and high energy beam welding

GB/T 985.2 Recommended groove for submerged arc welding

GB/T 2982 Specifications, dimensions, pressure and load of pneumatic tires for industrial vehicles

GB/T 3098.1 Mechanical properties of fasteners Bolts, screws and studs

GB/T 3766 General rules and safety requirements for hydraulic transmission systems and their components

GB/T 4208-2017 Enclosure protection degree (IP code)

GB/T 4662 Static load rating of rolling bearings

GB/T 4942-2021 Degree of protection of rotating electrical machines as a whole (IP code) Classification

GB/T 5008.1 Lead-acid batteries for starting - Part 1.Technical conditions and test methods

GB/T 5143 Technical requirements and test methods for overhead guards for industrial vehicles

GB/T 5182 Technical requirements and test methods for forklift forks

GB/T 5184 Forklift hook type fork and fork frame installation dimensions

GB/T 6074 Leaf chain, link and sheave dimensions, measuring force and tensile strength

GB/T 6104.1 Industrial truck terminology and classification Part 1.Industrial truck types

GB/T 7403.1 Lead-acid batteries for traction Part 1.Technical requirements

GB/T 10823 Specifications, dimensions and loads for pneumatic tyre rims and solid tyres

GB/T 10827.1 Industrial vehicles safety requirements and verification Part 1.Self-propelled industrial vehicles (except unmanned vehicles, telescopic

Forklifts and trucks)

GB/T 10827.3 Industrial truck safety requirements and verification Part 3.Vehicles with a lifting platform and specially designed for

Additional requirements for vehicles operating with lifted loads

GB/T 14687 Industrial castors and wheels

GB/T 16622 Specifications, dimensions and loads of press-fit solid tires

GB/T 17300 Access devices for earth-moving machinery

GB/T 18849 Brake performance and component strength for powered industrial vehicles

GB/T 26560 General rules for safety signs and hazard pictorial symbols for powered industrial vehicles

GB/T 26948.1 Technical requirements and test methods for industrial vehicle driver restraint systems Part 1.Lap belts

GB/T 26949.2 Verification of stability of industrial vehicles Part 2.Counterbalanced forklifts […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 136 pages — is available in the English PDF.

Referenced standards

Normative references

Cited by

GB/T 46909-2025Forklift truck attachments - Design rules

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