Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 25625-2010 Earth-moving Machinery – Dumpers - Trainer Seat/Enclosure. The following main changes have been made with respect to GB/T 25625-2010:
——The name of the standard is modified;
——The application scope of the standard is modified (see Chapter 1; Chapter 1 of 2010 edition);
——"Normative References" is supplemented and modified (see Chapter 2; Chapter 2 of 2010 edition);
——"Terms and Definitions" is supplemented and modified (see Chapter 3; Chapter 3 of 2010 edition);
——Requirements for "Seat dimensions", "Trainer seat location", "Trainer space envelope dimensions/adjustment/suspension", "Materials", "Handhold", "Storage" and "Restraint system" are modified (see 4.1, 4.2, 4.3, 4.7, 4.8, 4.9 and 4.10; Chapter 4 of 2010 edition);
——"FOPS or top-guard requirements for trainer seats", "ROPS requirements for trainer seats" and "Trainer seat ROPS/FOPS or top-guard labelling" are added (see 4.4, 4.5 and 4.6);
——“The Dimensions of the Trainer DLV” and “Trainer DLV Acceptance Criteria” are added (see Annex A and Annex B);
——"Bibliography" is added (see Bibliography).
This standard is identical to ISO 13459:2012 Earth-moving Machinery - Trainer Seat - Deflection Limiting Volume, Space Envelope and Performance Requirements by means of translation.
Chinese documents having corresponding consistency relationship with the normative international documents referenced in this standard are as follows:
——GB/T 8420-2011 Earth-moving Machinery - Physical Dimensions of Operators and Minimum Operator Space Envelope (ISO 3411:2007, IDT);
——GB/T 8498-2017 Earth-moving Machinery - Basic Type - Identification - Terms and Definitions (ISO 6165:2012, IDT);
——GB/T 8591-2000 Earth-moving Machinery - Seat Index Point (eqv ISO 5353:1995);
——GB/T 16937-2010 Earth-moving machinery - Operators Field of View - Test Method and Performance Criteria (ISO 5006:2006, IDT);
——GB/T 17300-2017 Earth-moving Machinery - Access Systems (ISO 2687:2011, IDT);
——GB/T 17771-2010 Earth-moving Machinery - Falling-object Protective Structures - Laboratory Tests and Performance Requirements (ISO 3449:2005, IDT);
——GB/T 17921-2010 Earth-moving Machinery - Seat Belts and Seat Belt Anchorages - Performance Requirements and Tests (ISO 6683:2005, MOD);
——GB/T 17922-2014 Earth-moving Machinery - Roll-over Protective Structures - Laboratory Tests and Performance Requirements (ISO 3471:2008, IDT);
——GB/T 19930.2-2014 Earth-moving Machinery - Laboratory Tests and Performance Requirements for Protective Structures of Excavators - Part 2: Roll-over Protective Structures (ROPS) for Excavators of over 6t (ROPS) (ISO 12117-2:2008, IDT);
——GB/T 19932-2005 Earth-moving Machinery - Hydraulic Excavators - Laboratory Tests and Performance Requirements for Operator Protective Guards (ISO 10262:1998, MOD);
——GB/T 21153-2007 Earth-moving Machinery - Units for Dimensions Performance and Capacities and Their Measurement Accuracies (ISO 9248:1992, MOD);
——GB 25684.1-2010 Earth-moving Machinery - Safety - Part 1: General Requirements (ISO 20474-1:2008, MOD).
This standard was proposed by the China Machinery Industry Federation.
This standard is under the jurisdiction of the National Technical Committee on Earth-moving Machinery of Standardization Administration of China (SAC/TC 334).
The previous edition of the standard is as follows:
——GB/T 25625-2010.
Earth-moving Machinery - Trainer Seat - Deflection Limiting Volume, Space Envelope and Performance Requirements
1 Scope
This standard specifies the trainer-seat defection limiting volume (DLV), space envelope and performance requirements, and dimensions, for use in laboratory evaluations of protective structures on earth-moving machinery as defined in ISO 6165.
The effects of vibration are not considered a significant risk for short-term or temporary seats and are therefore outside the scope of this standard.
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.
ISO 2867 Earth-moving Machinery - Access Systems
ISO 3411 Earth-moving Machinery - Physical Dimensions of Operators and Minimum Operator Space Envelope
ISO 3449 Earth-moving Machinery - Falling-object Protective Structures - Laboratory Tests and Performance Requirements
ISO 3471 Earth-moving Machinery - Roll-over Protective Structures - Laboratory Tests and Performance Requirements
ISO 5006 Earth-moving Machinery - Operator's Field of View - Test Method and Performance Criteria
ISO 5353 Earth-moving Machinery，and Tractors and Machinery for Agriculture and Forestry - Seat Index Point
ISO 6165 Earth-moving Machinery - Basic Type - Identification and Terms and Definitions
ISO 6683 Earth-moving Machinery - Seat Belts and Seat Belt Anchorages - Performance Requirements and Tests
ISO 9248 Earth-moving Machinery - Units for Dimensions，Performance and Capacities，and Their Measurement Accuracies
ISO 10262 Earth-moving Machinery - Hydraulic Excavators - Laboratory Tests and Performance Requirements for Operator Protective Guards
ISO 12117-2 Earth-moving Machinery - Laboratory Tests and Performance Requirements for Protective Structures of Excavators - Part 2: Roll-over Protective Structures (ROPS) for Excavators of over 6t
ISO 20474-1 Earth-moving Machinery - Safety - Part 1: General Requirements
3 Terms and Definitions
For the purposes of this document, the following terms and definitions apply.
3.1
locating axis; LA
horizontal axis for positioning the DLV (3.2) with respect to the seat index point (SIP)
3.2
deflection limiting volume; DLV
orthogonal approximation of a large, seated operator, as defined in ISO 3411, wearing normal clothing and a protective helmet
Note 1: Adapted from ISO 3164:1995, definition 3.1.
Note 2: The DLV applies to the operator, whereas the trainer DLV (3.7) applies to the trainer and trainer seat.
3.3
operator space
space around the operator
3.4
orthogonal top head plane
upper 270mm×330mm rectangular horizontal surface of the DLV for FOPS testing
See Figure A.1.
3.5
trainer seat
seat installed in the operator’s compartment, adjacent to or behind the operator’s seat, for short-term or temporary usage for the primary purpose of training an operator
3.6
trainer space envelope
envelope in which the trainer performs job tasks
3.7
trainer DLV
approximation of a large, seated trainer wearing normal clothing and a protective helmet
See Figure A.1.
Note: Adapted from ISO 3164:1995, definition 3.1. (The trainer is assumed to be the same size as the large operator in that definition and in definition 3.2).
3.8
handhold
device which the trainer can hold onto, providing support and preventing body movement
4 Requirements
4.1 Seat dimensions
Trainer seats shall have dimensions in accordance with Table 1, unless a deviation is justified based on unusual ergonomic considerations. All dimensions shall be referenced to the seat index point (SIP), determined in accordance with ISO 5353. The trainer seat may consist of independent cushions, provided they conform to the required dimensions.
4.2 Trainer seat location
4.2.1 The trainer seat shall be installed within the operator’s station.
4.2.2 No portion of the trainer seat shall be located in the sector of vision A, as defined in ISO 5006. The trainer seat shall be positioned so as to provide adequate visibility for observing the operator and the work environment. The location of the trainer seat shall not interfere with the safe operation of the machine by the operator.
4.3 Trainer space envelope dimensions/adjustment/suspension
The trainer space envelope shall have the dimensions given in Figure 1. Seat adjustment and suspension is not required for a trainer seat.
4.4 FOPS or top-guard requirements for trainer seats
The FOPS (falling-object protective structure) requirements of ISO 3449 or top-guard requirements of ISO 10262 apply to the trainer seat using the trainer DLV, in accordance with Annex A. Results from FOPS or top-guard testing for the operator may be used to evaluate and verify compliance with this standard if the cab structure is shown through analysis to be stronger above the trainer.
4.5 ROPS requirements for trainer seats
4.5.1 General
The ROPS (roll-over protective structure) requirements given in ISO 3471 or ISO 12117-2, together with the provisions of 4.5.2 and 4.5.3, apply to trainer seats. Results from ROPS testing in accordance with ISO 3471 or ISO 12117-2 for the operator may also be used to evaluate and verify compliance with 4.5.3.
See also Annex B.
4.5.2 ROPS test procedure
Test the ROPS structure in accordance with ISO 3471 or ISO 12117-2, using the trainer DLV provisions given in Annexes A and B.
4.5.3 ROPS acceptance criteria
The acceptance criteria of ISO 3471 or ISO 12117-2, together with those of Annex B, apply.
4.6 Trainer seat ROPS/FOPS or top-guard labelling
If the acceptance criteria given in Annex B have been met, a reference to this standard shall be added to the ROPS/FOPS or top-guard label.
4.7 Materials
Materials used for the trainer seat and its fittings shall be fame-retardant and in accordance with ISO 20474-1.
4.8 Handhold
A handhold meeting the dimensional requirements for handholds given in ISO 2867 shall be placed within arm’s reach of the person seated in the trainer seat. The handhold may be the same one as that used to push to open or pull to close the door. The door latch mechanism for latching and unlatching the door shall not be used as a handhold.
4.9 Storage
The trainer seat may be stored or removed when not in use.
4.10 Restraint system
The trainer seat shall have a restraint system (e.g. seat belt and seat belt anchorage) in accordance with ISO 6683.
Foreword I
1 Scope
2 Normative References
3 Terms and Definitions
4 Requirements
Annex A (Normative) Trainer DLV Dimensions
Annex B (Normative) Trainer DLV Acceptance Criteria
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 25625-2010 Earth-moving Machinery – Dumpers - Trainer Seat/Enclosure. The following main changes have been made with respect to GB/T 25625-2010:
——The name of the standard is modified;
——The application scope of the standard is modified (see Chapter 1; Chapter 1 of 2010 edition);
——"Normative References" is supplemented and modified (see Chapter 2; Chapter 2 of 2010 edition);
——"Terms and Definitions" is supplemented and modified (see Chapter 3; Chapter 3 of 2010 edition);
——Requirements for "Seat dimensions", "Trainer seat location", "Trainer space envelope dimensions/adjustment/suspension", "Materials", "Handhold", "Storage" and "Restraint system" are modified (see 4.1, 4.2, 4.3, 4.7, 4.8, 4.9 and 4.10; Chapter 4 of 2010 edition);
——"FOPS or top-guard requirements for trainer seats", "ROPS requirements for trainer seats" and "Trainer seat ROPS/FOPS or top-guard labelling" are added (see 4.4, 4.5 and 4.6);
——“The Dimensions of the Trainer DLV” and “Trainer DLV Acceptance Criteria” are added (see Annex A and Annex B);
——"Bibliography" is added (see Bibliography).
This standard is identical to ISO 13459:2012 Earth-moving Machinery - Trainer Seat - Deflection Limiting Volume, Space Envelope and Performance Requirements by means of translation.
Chinese documents having corresponding consistency relationship with the normative international documents referenced in this standard are as follows:
——GB/T 8420-2011 Earth-moving Machinery - Physical Dimensions of Operators and Minimum Operator Space Envelope (ISO 3411:2007, IDT);
——GB/T 8498-2017 Earth-moving Machinery - Basic Type - Identification - Terms and Definitions (ISO 6165:2012, IDT);
——GB/T 8591-2000 Earth-moving Machinery - Seat Index Point (eqv ISO 5353:1995);
——GB/T 16937-2010 Earth-moving machinery - Operators Field of View - Test Method and Performance Criteria (ISO 5006:2006, IDT);
——GB/T 17300-2017 Earth-moving Machinery - Access Systems (ISO 2687:2011, IDT);
——GB/T 17771-2010 Earth-moving Machinery - Falling-object Protective Structures - Laboratory Tests and Performance Requirements (ISO 3449:2005, IDT);
——GB/T 17921-2010 Earth-moving Machinery - Seat Belts and Seat Belt Anchorages - Performance Requirements and Tests (ISO 6683:2005, MOD);
——GB/T 17922-2014 Earth-moving Machinery - Roll-over Protective Structures - Laboratory Tests and Performance Requirements (ISO 3471:2008, IDT);
——GB/T 19930.2-2014 Earth-moving Machinery - Laboratory Tests and Performance Requirements for Protective Structures of Excavators - Part 2: Roll-over Protective Structures (ROPS) for Excavators of over 6t (ROPS) (ISO 12117-2:2008, IDT);
——GB/T 19932-2005 Earth-moving Machinery - Hydraulic Excavators - Laboratory Tests and Performance Requirements for Operator Protective Guards (ISO 10262:1998, MOD);
——GB/T 21153-2007 Earth-moving Machinery - Units for Dimensions Performance and Capacities and Their Measurement Accuracies (ISO 9248:1992, MOD);
——GB 25684.1-2010 Earth-moving Machinery - Safety - Part 1: General Requirements (ISO 20474-1:2008, MOD).
This standard was proposed by the China Machinery Industry Federation.
This standard is under the jurisdiction of the National Technical Committee on Earth-moving Machinery of Standardization Administration of China (SAC/TC 334).
The previous edition of the standard is as follows:
——GB/T 25625-2010.
Earth-moving Machinery - Trainer Seat - Deflection Limiting Volume, Space Envelope and Performance Requirements
1 Scope
This standard specifies the trainer-seat defection limiting volume (DLV), space envelope and performance requirements, and dimensions, for use in laboratory evaluations of protective structures on earth-moving machinery as defined in ISO 6165.
The effects of vibration are not considered a significant risk for short-term or temporary seats and are therefore outside the scope of this standard.
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.
ISO 2867 Earth-moving Machinery - Access Systems
ISO 3411 Earth-moving Machinery - Physical Dimensions of Operators and Minimum Operator Space Envelope
ISO 3449 Earth-moving Machinery - Falling-object Protective Structures - Laboratory Tests and Performance Requirements
ISO 3471 Earth-moving Machinery - Roll-over Protective Structures - Laboratory Tests and Performance Requirements
ISO 5006 Earth-moving Machinery - Operator's Field of View - Test Method and Performance Criteria
ISO 5353 Earth-moving Machinery，and Tractors and Machinery for Agriculture and Forestry - Seat Index Point
ISO 6165 Earth-moving Machinery - Basic Type - Identification and Terms and Definitions
ISO 6683 Earth-moving Machinery - Seat Belts and Seat Belt Anchorages - Performance Requirements and Tests
ISO 9248 Earth-moving Machinery - Units for Dimensions，Performance and Capacities，and Their Measurement Accuracies
ISO 10262 Earth-moving Machinery - Hydraulic Excavators - Laboratory Tests and Performance Requirements for Operator Protective Guards
ISO 12117-2 Earth-moving Machinery - Laboratory Tests and Performance Requirements for Protective Structures of Excavators - Part 2: Roll-over Protective Structures (ROPS) for Excavators of over 6t
ISO 20474-1 Earth-moving Machinery - Safety - Part 1: General Requirements
3 Terms and Definitions
For the purposes of this document, the following terms and definitions apply.
3.1
locating axis; LA
horizontal axis for positioning the DLV (3.2) with respect to the seat index point (SIP)
3.2
deflection limiting volume; DLV
orthogonal approximation of a large, seated operator, as defined in ISO 3411, wearing normal clothing and a protective helmet
Note 1: Adapted from ISO 3164:1995, definition 3.1.
Note 2: The DLV applies to the operator, whereas the trainer DLV (3.7) applies to the trainer and trainer seat.
3.3
operator space
space around the operator
3.4
orthogonal top head plane
upper 270mm×330mm rectangular horizontal surface of the DLV for FOPS testing
See Figure A.1.
3.5
trainer seat
seat installed in the operator’s compartment, adjacent to or behind the operator’s seat, for short-term or temporary usage for the primary purpose of training an operator
3.6
trainer space envelope
envelope in which the trainer performs job tasks
3.7
trainer DLV
approximation of a large, seated trainer wearing normal clothing and a protective helmet
See Figure A.1.
Note: Adapted from ISO 3164:1995, definition 3.1. (The trainer is assumed to be the same size as the large operator in that definition and in definition 3.2).
3.8
handhold
device which the trainer can hold onto, providing support and preventing body movement
4 Requirements
4.1 Seat dimensions
Trainer seats shall have dimensions in accordance with Table 1, unless a deviation is justified based on unusual ergonomic considerations. All dimensions shall be referenced to the seat index point (SIP), determined in accordance with ISO 5353. The trainer seat may consist of independent cushions, provided they conform to the required dimensions.
4.2 Trainer seat location
4.2.1 The trainer seat shall be installed within the operator’s station.
4.2.2 No portion of the trainer seat shall be located in the sector of vision A, as defined in ISO 5006. The trainer seat shall be positioned so as to provide adequate visibility for observing the operator and the work environment. The location of the trainer seat shall not interfere with the safe operation of the machine by the operator.
4.3 Trainer space envelope dimensions/adjustment/suspension
The trainer space envelope shall have the dimensions given in Figure 1. Seat adjustment and suspension is not required for a trainer seat.
4.4 FOPS or top-guard requirements for trainer seats
The FOPS (falling-object protective structure) requirements of ISO 3449 or top-guard requirements of ISO 10262 apply to the trainer seat using the trainer DLV, in accordance with Annex A. Results from FOPS or top-guard testing for the operator may be used to evaluate and verify compliance with this standard if the cab structure is shown through analysis to be stronger above the trainer.
4.5 ROPS requirements for trainer seats
4.5.1 General
The ROPS (roll-over protective structure) requirements given in ISO 3471 or ISO 12117-2, together with the provisions of 4.5.2 and 4.5.3, apply to trainer seats. Results from ROPS testing in accordance with ISO 3471 or ISO 12117-2 for the operator may also be used to evaluate and verify compliance with 4.5.3.
See also Annex B.
4.5.2 ROPS test procedure
Test the ROPS structure in accordance with ISO 3471 or ISO 12117-2, using the trainer DLV provisions given in Annexes A and B.
4.5.3 ROPS acceptance criteria
The acceptance criteria of ISO 3471 or ISO 12117-2, together with those of Annex B, apply.
4.6 Trainer seat ROPS/FOPS or top-guard labelling
If the acceptance criteria given in Annex B have been met, a reference to this standard shall be added to the ROPS/FOPS or top-guard label.
4.7 Materials
Materials used for the trainer seat and its fittings shall be fame-retardant and in accordance with ISO 20474-1.
4.8 Handhold
A handhold meeting the dimensional requirements for handholds given in ISO 2867 shall be placed within arm’s reach of the person seated in the trainer seat. The handhold may be the same one as that used to push to open or pull to close the door. The door latch mechanism for latching and unlatching the door shall not be used as a handhold.
4.9 Storage
The trainer seat may be stored or removed when not in use.
4.10 Restraint system
The trainer seat shall have a restraint system (e.g. seat belt and seat belt anchorage) in accordance with ISO 6683.
Contents of GB/T 25625-2017
Foreword I
1 Scope
2 Normative References
3 Terms and Definitions
4 Requirements
Annex A (Normative) Trainer DLV Dimensions
Annex B (Normative) Trainer DLV Acceptance Criteria
