GOST R ISO 10642-2012 Countersunk Head Screws with Hex Socket

FEDERAL AGENCY FOR TECHNICAL REGULATION AND METROLOGY

GOST R ISO 11112-2012

NATIONAL STANDARD OF THE RUSSIAN FEDERATION

Official edition

Moscow

Foreword

1 PREPARED by Open Joint-Stock Company “Central Research and Testing Ground for Construction and Road Machinery” (OJSC “TsNIP SDM”) based on its own authentic Russian translation of the international standard specified in item 4.

2 SUBMITTED by Technical Committee for Standardization TC 267 “Construction and Road Machinery and Equipment”.

3 APPROVED AND PUT INTO EFFECT by Order of the Federal Agency for Technical Regulation and Metrology dated November 22, 2012 No. 1059-st.

4 This standard is identical to the international standard ISO 11112:1995/Amd. 1:2001 “Earth-moving machinery — Operator’s seat — Dimensions and requirements” (ISO 11112:1995/Amd. 1:2001 “Earth-moving machinery — Operator’s seat — Dimensions and requirements”), with the Amd.1:2001 amendments highlighted in bold italics in Table 1.

When applying this standard, it is recommended to use, instead of the referenced international standards, the corresponding national standards of the Russian Federation and the interstate standard applicable in this capacity, information on which is given in Additional Annex DA.

5 INTRODUCED FOR THE FIRST TIME

1 Scope

This standard establishes dimensions, technical requirements and adjustment range for operator’s seats of earth-moving machinery in accordance with ISO 6165. This standard also establishes dimensions of armrests, if machine seats are equipped with them.

2 Normative references

The following referenced documents are necessary for the application of this standard. For dated references, only the specified edition of the referenced document applies; for undated references, the latest edition of the referenced document applies.

ISO 3411 Earth-moving machinery — Human physical dimensions of operators and minimum operator space envelope (ISO 3411, Earth-moving machinery — Human physical dimensions of operators and minimum operator space envelope)

ISO 5353:1995 Earth-moving machinery, and tractors and machinery for agriculture and forestry — Seat index point (ISO 5353:1995, Earth-moving machinery, and tractors and machinery for agriculture and forestry — Seat index point)

ISO 6165:1987 Earth-moving machinery — Basic types — Vocabulary (ISO 6165:1987, Earth-moving machinery — Basic types — Vocabulary)

3 Technical requirements

3.1 Nominal dimensions of seat components, their relative positioning and adjustment range are established based on ergonomic requirements for operators in accordance with ISO 3411, from the 5 % to 95 % operator groups.

3.2 Operator’s seat dimensions and adjustment ranges are given in Table 1 and Figure 1. These are basic and recommended dimensions.

Seat dimensions and adjustment ranges, where provided, are given relative to the seat index point (SIP) in accordance with ISO 5353. Dimensions and adjustment ranges differing from those given in this standard may be used only if they provide better working conditions for the operator.

3.3 On machines where a higher seat index point (SIP) is desirable, it is recommended to reduce the angle between the seat cushion and the seat back (ISO 5353).

3.4 To ensure free access of the operator to the seat, one or both armrests shall be movable where necessary. In such cases, the armrest shall provide stable support during machine operation.

3.5 Seats may be swivel or folding type. This allows for more comfortable working conditions for the operator, as well as easier entry and exit within the workplace access system. Locking mechanisms for the operating positions of the seat (swivel or folding) shall preclude accidental movement of the seat during machine operation.

Table 1

Designation	Dimension name		Dimension, mm¹)
dimension		minimum	nominal	maximum
i	Seat cushion length	215	265	315
b₁	Seat cushion width	430	500	—
h	Fore-and-aft adjustment	100	150	—
h₁	Vertical adjustment	0	75	—
h₂	Seat back height	150	400	—
b₂	Width of upper part of seat back	300	—	500
H₃	Width of lower part of seat back	300	—	500
h₃	Armrest height	95	140	160
h	Armrest length	90	140	190
b₄	Distance between armrests. Armrest width	450	500	550
Hb		50	75	—
h₄	Armrest thickness	50	100	—
h₅	Height of the center of the lumbar support radius relative to SIP	115	130	145
r	Lumbar support radius	150	300	—
Angle	Seat cushion tilt angle	5°	10°	15°
Angle	Seat cushion tilt angle adjustment	0°	±5°	—
Angle	Seat back tilt angle	5°	10°	15°
Angle	Seat back tilt angle adjustment	0°	±5°	—

¹ Maximum and minimum dimensions may be changed for greater operator comfort in accordance with ergonomic feasibility. Nominal values are basic or generally accepted values, not averaged or mean values.

² Adjustment values are general ranges. Vertical adjustment shall be independent of suspension adjustment.

³ To ensure free movement of the shoulders and arms over the seat back, or for convenient rearward visibility, or for operating rear-mounted equipment, the maximum seat back height shall be 300 mm.

⁴ To ensure free rearward movement of the elbows, the maximum width may be 330 mm. The seat back width may be greater or smaller.

⁵ Armrests mounted on the seat shall have vertical and horizontal adjustment. It is desirable to have the possibility of vertical movement of the armrests from the maximum to the minimum values of h₃, measured vertically from the seat index point SIP to the top of the armrest.

⁶ Recommended value.

⁷ The nominal bending radius of the support in the vertical plane shall be 300 mm, and the minimum shall be 150 mm.

⁸ The seat cushion tilt angle is measured after installation and loading of the device for determining the seat index point SIP, according to the procedure given in ISO 5353.

⁹ Angle adjustment values, where provided, are determined relative to the mid-position. This is not necessarily a fixed position.

¹⁰ The angle is measured along the axis of symmetry of the seat back. If lumbar support is provided, it is set to the mid-position, and the seat back tilt angle is measured along the axis of symmetry above the support. For seat backs with lumbar support, an increase in the tilt angle of not less than 5° is permitted.

¹¹ For mini-machines (see ISO 6165:1997), the fore-and-aft adjustment shall be at least within the range of ±35 mm or shall correspond to the adjustment most frequently used by the operator during machine operation.

¹² For mini-machines (see ISO 6165:1997), vertical adjustment is not required.

Annex DA (informative)

Information on the correspondence of referenced international standards to referenced national standards of the Russian Federation and the interstate standard applicable in this capacity

Designation of the referenced international standard	Degree of conformity	Designation and name of the corresponding national, interstate standard
ISO 3411	IDT	GOST R ISO 3411-99 Earth-moving machinery. Human physical dimensions of operators and minimum operator space envelope”
ISO 5353:1995	MOD	GOST 27715-88 (ISO 5353—78) “Earth-moving machinery, tractors and machinery for agricultural and forestry work. Seat index point”
ISO 6165:1987	IDT	GOST R ISO 6165 Earth-moving machinery. Classification. Terms and definitions”
Note — This table uses the following symbols to denote the degree of correspondence of the standard: - IDT — identical standard; - MOD — modified standard.

Corresponds to ISO 10642, DIN 7991