1、BRITISH STANDARD BS ISO/OECD 789-10:2006 Agricultural tractors Test procedures Part 10: Hydraulic power at tractor/implement interface ICS 65.060.10 BS ISO/OECD 789-10:2006 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2006 BSI 2006
2、 ISBN 0 580 48523 4 National foreword This British Standard reproduces verbatim ISO/OECD 789-10:2006 and implements it as the UK national standard. It supersedes BS 6347-10:1997 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee AGE/6, Agricultural tract
3、ors and forestry machinery, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to in this document may be found in the BSI Catal
4、ogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its cor
5、rect application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests inform
6、ed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the ISO/OECD title page, pages ii to v, a blank page, pages 1 to 14, an inside back cover and a back cover. The BSI copyright noti
7、ce displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments Reference number ISO/OECD 789-10:2006(E)INTERNATIONAL STANDARD ISO/OECD 789-10 First edition 2006-07-01 Agricultural tractors Test procedures Part 10: Hydraulic power
8、 at tractor/implement interface Tracteurs agricoles Modes opratoires dessai Partie 10: Puissance hydraulique disponible la liaison tracteur/instrument BS ISO/OECD 789-10:2006ii iii Contents Page Foreword iv 1 Scope . 1 2 Normative references . 1 3 Terms and definitions. 1 4 Measurement units and tol
9、erances. 3 5 General requirements. 3 5.1 Specification 3 5.2 Running-in and preliminary adjustments. 3 6 Available hydraulic pressure test . 4 6.1 Steady state. 4 6.1.1 Test conditions . 4 6.1.2 Test procedures 5 6.1.2.1 Flow through single coupler pair Type 1 tests 5 6.1.2.2 Flow through single cou
10、pler pair Type 2 tests 5 6.1.2.3 Flow into sump return port with coupler Type 2 test 5 6.1.2.4 Flow into sump return port without coupler Type 2 test 5 6.2 Peak pressure . 5 6.2.1 Test conditions . 5 6.2.2 Test procedure Maximum flow selected Type 2 test . 5 6.3 Test report Available hydraulic press
11、ure 6 6.3.1 Type 1 tests . 6 6.3.2 Type 2 tests . 6 7 Available hydraulic power . 7 7.1 Test conditions . 7 7.2 Test procedures 7 7.2.1 Hydraulic power through single coupler pair Types 1 and 2 tests . 7 7.2.2 Maximum available hydraulic power using two or more coupler pairs simultaneously Types 1 a
12、nd 2 tests. 8 7.3 Test report Available hydraulic power. 8 7.3.1 Maximum available hydraulic power Type 1 tests 8 7.3.2 Maximum useable (continuous) available hydraulic power Type 2 tests 8 Annex A (normative) Specimen test report . 10 Bibliography . 14 BS ISO/OECD 789-10:2006iv Foreword ISO (the In
13、ternational Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee h
14、as been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical
15、 standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodi
16、es for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. ISO/OECD 789-10 was prepared by Technical Committee ISO/TC 23, Tractors and machinery for agriculture and forestry, Subcommittee SC 2, Common tests, in cooperation with the
17、 Organisation for Economic Cooperation and Development (OECD). This first edition of ISO/OECD 789-10 cancels and replaces ISO 789-10:1996, which has been technically revised. ISO 789 consists of the following parts, under the general title Agricultural tractors Test procedures: Part 1: Power tests f
18、or power take-off Part 2: Rear three-point linkage lifting capacity Part 3: Turning and clearance diameters Part 4: Measurement of exhaust smoke Part 5: Partial power PTO Non-mechanically transmitted power Part 6: Centre of gravity Part 7: Axle power determination Part 8: Engine air cleaner Part 9:
19、Power tests for drawbar Part 10: Hydraulic power at tractor/implement interface joint publication with OECD Part 11: Steering capability of wheeled tractors Part 12: Low temperature starting Rear three-point linkage lifting capacity is to form the subject of a future ISO/OECD 789-2. BS ISO/OECD 789-
20、10:2006 v Foreword OECD (the Organisation for Economic Cooperation and Development) is an intergovernmental reference for the certification and standardization of certain agricultural commodities. The work of the OECD in the area of standardization involves both member and non-member economies and f
21、ocuses on the creation of common criteria in order to facilitate international trade. Participating countries are members of the OECD, the United Nations or the World Trade Organization. The OECD Tractor Codes provide common performance criteria overseen by the OECD Committee for Agriculture. The Co
22、mmittee is one of the major OECD policy committees and is responsible for implementing the agricultural programme of work. The Codes and their amendments are subject to approval by the OECD Council. They relate to the following tests: tractor performance (Code 2); strength of protective structures f
23、or standard tractors (dynamic test) (Code 3); strength of protective structures for standard tractors (static test) (Code 4); noise measurement at the drivers position(s) (Code 5); strength of front-mounted roll-over protective structures on narrow-track wheeled agricultural and forestry tractors (C
24、ode 6); strength of rear-mounted roll-over protective structures on narrow-track wheeled agricultural and forestry tractors (Code 7); strength of protective structures on track-laying tractors (Code 8); strength of protective structures on telehandlers (Code 9). The OECD Tractor Codes are made avail
25、able to those countries which are OECD Members, as well as to other countries. To date, 29 countries adhere to the Codes, including three non-OECD Members, China, India and the Russian Federation. Each National Authority designated for implementing the Codes may perform tractor tests according to th
26、e common harmonized testing procedures and then submit results to OECD for approval. Cooperative agreements are established between OECD and certain institutions, such as ISO and the European Community, with the objective of avoiding contradictory requirements. The European Commission participates i
27、n the work of the OECD and is represented on the OECD Council (without the right of veto). A Memorandum of Understanding (MoU) has been signed by ISO and OECD in connection with the TC 23/SC 2 programme of work on tractors. The OECD test codes are published in French (F) and English (E), and are sub
28、ject to periodic revision for dealing with the technical progress of agricultural and forestry tractors. BS ISO/OECD 789-10:2006blank 1 Agricultural tractors Test procedures Part 10: Hydraulic power at tractor/implement interface 1 Scope ISO/OECD 789-10 specifies tests for determining the hydraulic
29、pressure at the external hydraulic service of an agricultural tractor/implement as specified in ISO 10448, as well as companion tests for measuring the maximum hydraulic power available. 2 Normative references The following referenced documents are indispensable for the application of this document.
30、 For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 730-1:1994, Agricultural wheeled tractors Rear-mounted three-point linkage Part 1: Categories 1, 2, 3 and 4 ISO 3448:1992, Industrial l
31、iquid lubricants ISO viscosity classification ISO 5675:1992, Agricultural tractors and machinery General purpose quick-action hydraulic couplers ISO 6149-1:2006, Connections for hydraulic fluid power and general use Ports and stud ends with ISO 261 metric threads and O-ring sealing Part 1: Ports wit
32、h truncated housing for O-ring seal ISO 6149-2:2006, Connections for hydraulic fluid power and general use Ports and stud ends with ISO 261 metric threads and O-ring sealing Part 2: Dimensions, design, test methods and requirements for heavy- duty (S series) stud ends ISO 6149-3:2006, Connections fo
33、r hydraulic fluid power and general use Ports and stud ends with ISO 261 metric threads and O-ring sealing Part 3: Dimensions, design, test methods and requirements for light-duty (L series) stud ends ISO 10448:1994, Agricultural tractors Hydraulic pressure for implements 3 Terms and definitions For
34、 the purposes of this document, the following terms and definitions apply. 3.1 agricultural tractor self-propelled machine, either wheeled and having at least two axles or track-laying, particularly designed to pull, push, carry and operate implements used for agricultural work (including forestry w
35、ork) NOTE It may be provided with a detachable loading platform. BS ISO/OECD 789-10:20062 3.2 maximum engine speed engine speed at which the throttle control is at the maximum setting 3.3 rated engine speed engine speed specified by the tractor manufacturer for continuous operation at full load 3.4
36、external hydraulic service source of hydraulic power, derived from the hydraulic system of the agricultural tractor, available for use on an implement mounted on, coupled to or otherwise used in conjunction with it ISO 10448:1994 3.5 coupler pair pair of female hydraulic couplers compatible with mal
37、e couplers as specified in ISO 5675, mounted on agricultural tractors and connected to the hydraulic system to allow flow from one coupler to the other ISO 10448:1994 3.6 available differential pressure steady state difference of the hydraulic pressure between two male coupler parts on the implement
38、 side ISO 10448:1994 3.7 maximum pressure maximum steady state hydraulic pressure at either male coupler connected to a coupler pair ISO 10448:1994 3.8 maximum loop return pressure maximum steady hydraulic pressure at the male coupler returning flow to a hydraulic system that can reverse the flow th
39、rough that coupler ISO 10448:1994 3.9 maximum sump return pressure with coupler maximum steady state hydraulic pressure at the male coupler returning flow directly to the reservoir ISO 10448:1994 3.10 maximum sump return pressure without coupler maximum steady state hydraulic pressure at an M22 1,5
40、or M27 2 thread size port in accordance with ISO 6149-1, ISO 6149-2 or ISO 6149-3, returning flow directly to the reservoir ISO 10448:1994 3.11 rated maximum hydraulic pressure maximum pressure as specified by the tractor manufacturer for continuous use BS ISO/OECD 789-10:2006 3 3.12 maximum hydraul
41、ic power hydraulic power calculation based on the measured flow and available coupler outlet pressure (the pressure near the coupler where oil is exiting from the tractor) NOTE The calculation does not take into account return pressure losses. 3.13 maximum useable (continuous) hydraulic power hydrau
42、lic power calculation based on the measured flow and available differential pressure (the pressure near the coupler where oil is exiting from the tractor minus the pressure near the coupler where oil is re-entering the tractor) NOTE The calculation takes into account the return pressure losses and d
43、efines the useable hydraulic power available. 3.14 peak pressure maximum instantaneous hydraulic pressure at either male coupler connected to a coupler pair ISO 10448:1994 4 Measurement units and tolerances The following units and tolerances apply to the maximum value measured: a) rotational frequen
44、cy, in revolutions per minute (r/min): 0,5 %; b) time, in seconds (s): 0,2 s; c) temperature, in degrees Celsius: 2 C (applicable to actual readings); d) pressure, in megapascals (MPa): 2 %; e) flow, in litres per minute (l/min): 2 %. 5 General requirements 5.1 Specification The tractor tested shall
45、 have its identification specification given in the test report (see Annex A) and shall be used in accordance with the manufacturers recommendations for normal operation. 5.2 Running-in and preliminary adjustments 5.2.1 The tractor shall be run-in prior to the test. 5.2.2 The hydraulic fluid shall b
46、e as recommended by the manufacturer and identified by type and viscosity in accordance with ISO 3448. 5.2.3 For the Type 1 tests listed in Annex A (OECD Code 2 compulsory tests), the throttle or governor control lever shall be adjusted to the maximum engine speed. The engine speed is continuously r
47、ecorded during the tests. 5.2.4 For the Type 2 tests listed in Annex A (OECD Code 2 supplementary tests), the engine speed condition may be either rated or maximum engine speed and is at the discretion of the manufacturer. For tests BS ISO/OECD 789-10:20064 conducted at rated engine speed, the throt
48、tle or governor control lever shall be adjusted to maintain the rated engine speed within the tolerance limits as specified in Clause 4 a). For tests conducted at the maximum engine speed, the engine speed is continuously recorded during the tests. 5.2.5 At the start of each test, the temperature of
49、 the hydraulic fluid in the tractor hydraulic reservoir shall be at 65 C 5 C, and shall be recorded. If this cannot be achieved owing to the presence of an oil cooler or other system component, the temperature measured during the test shall be stated in the test report. 5.2.6 All tractor-mounted flow controls shall be adjusted to obtain maximum flow.
