ISO 5005-1977 rus PDF

Full title and description

ISO 5005:1977 — Earth-moving machinery — Method for locating the centre of gravity. Russian adoption / national version published as ГОСТ 27248-87 (ИСО 5005-77): «Машины землеройные. Метод определения положения центра тяжести». This standard specifies a practical measurement method for determining the coordinates of the centre of gravity of earth‑moving machines (tractors, loaders, dumpers, graders and similar equipment) in various loading and attachment conditions.

Abstract

The standard defines a method based on measuring support reactions (using scales and lifting equipment) and geometric references applied to the machine to calculate longitudinal, transverse and vertical coordinates of the centre of gravity for earth‑moving machinery. The method accounts for changes in centre‑of‑gravity position produced by movable attachments, fluids and deformable elements and requires clear specification of test conditions.

General information

• Status: Published (International Standard); adopted nationally as ГОСТ 27248-87 (ИСО 5005-77) in the Soviet Union / Russian practice.
• Publication date: December 1977 (ISO edition 1 — 1977); GOST adoption published 1987 and effective 01.01.1988 (ГОСТ 27248-87).
• Publisher: International Organization for Standardization (ISO); national publisher for the Russian text: Gosstandart (USSR State Committee for Standards) / national standards bodies for subsequent redistributions.
• ICS / categories: 53.100 — Earth-moving machinery; group of technical committee ISO/TC 127 (machines for construction and mining).
• Edition / version: Edition 1 (ISO 5005:1977).
• Number of pages: 6 (ISO published document length: 6 pages).

Scope

Provides a standardized procedure to determine the three coordinates (longitudinal, transverse and vertical) of the centre of gravity for earth‑moving machines in any condition of loading or attachments. The procedure applies to both wheeled and tracked machines and specifies required instruments, positioning, lifting/tilting arrangements and calculation steps to derive the centre‑of‑gravity coordinates referenced to defined datum planes on the machine. The Russian national adoption clarifies test arrangements and required apparatus consistent with the ISO method.

Key topics and requirements

• Definition of terms and identification of test conditions (attachments, fluids, movable parts) that influence centre-of-gravity position.
• Required equipment: scales (weighing platforms), lifting gear/crane, prisms/blocks for supports, measuring templates/boards, levels and plumb lines.
• Procedure for measuring longitudinal coordinate (using platform reactions and known support geometry for tracked and wheeled machines).
• Procedure for measuring transverse coordinate (measuring left/right reactions and using track/axle width as lever arm).
• Procedure for measuring vertical coordinate (lifting one end, measuring reaction at the support and geometry to compute height of the centre of gravity).
• Calculation formulas, plotting of vertical lines on a reference plate fixed to the machine, and locating the centre by intersection/median methods.
• Specification of accuracy considerations and practical notes on maneuvering and repeatability during tests.

Typical use and users

Used by equipment manufacturers, type‑approval and certification bodies, test laboratories, safety engineers, design and R&D teams, and quality/control departments to: verify stability calculations, establish safe lifting and transport limits, produce technical data for operator manuals, and support compliance and type‑approval testing for earth‑moving machinery. National standards offices and industrial testing services also use the national adoption (ГОСТ) for regulatory compliance where applicable.

Related standards

Standards from ISO technical committee activities on earth‑moving and construction machinery (ISO/TC 127) and national standards that adopt or adapt ISO 5005:1977 (for example ГОСТ 27248-87 (ИСО 5005-77)). Related documents address stability, safety, and test methods for specific machine classes (tractors, loaders, graders) and later national standards covering centre‑of‑gravity determination for particular equipment families.

Keywords

centre of gravity; earth‑moving machinery; stability testing; ISO 5005:1977; ГОСТ 27248-87; method of determining centre of gravity; loaders; graders; tractors; measurement procedure.

FAQ

Q: What is this standard?

A: ISO 5005:1977 is an international standard that specifies a method for locating the centre of gravity of earth‑moving machinery; it has a Russian national adoption as ГОСТ 27248-87 (ИСО 5005-77).

Q: What does it cover?

A: It covers the required equipment, test setups and calculation steps to determine longitudinal, transverse and vertical coordinates of the machine’s centre of gravity in various loading and attachment configurations. The procedures apply to both wheeled and tracked earth‑moving machines.

Q: Who typically uses it?

A: Manufacturers, test laboratories, certification and type‑approval authorities, safety and design engineers, and anyone needing validated centre‑of‑gravity data for stability analyses, transport and operational safety of earth‑moving machines.

Q: Is it current or superseded?

A: ISO 5005 was published in December 1977 (edition 1) and is listed as a published ISO standard; it has been subject to periodic ISO review actions. Nationally, it was adopted as ГОСТ 27248-87 (ИСО 5005-77) with an effective date from 01.01.1988. For confirmation of current status in a specific country or for any newer replacements or revisions, consult the applicable national standards body or the ISO catalogue.

Q: Is it part of a series?

A: It is a standalone method standard within the body of ISO work on earth‑moving machinery (ISO/TC 127). Related ISO and national standards address other test methods, safety and performance requirements for specific machine types.

Q: What are the key keywords?

A: centre of gravity, earth‑moving machinery, stability, measurement method, ISO 5005:1977, ГОСТ 27248-87, loaders, tractors, graders.