1、June 2016 English price group 7No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 65.060.80!%Vl“2517304www.din.deDIN I
2、SO 11512Machinery for forestry Tracked special machines Performance criteria for brake systems (ISO 11512:1995),English translation of DIN ISO 11512:2016-06Forstmaschinen Spezialmaschinen mit Gleisketten Leistungsanforderungen an das Bremssystem (ISO 11512:1995),Englische bersetzung von DIN ISO 1151
3、2:2016-06Matriel forestier Machines spcifiques sur chenilles Critres de performance des dispositifs de freinage (ISO 11512:1995),Traduction anglaise de DIN ISO 11512:2016-06www.beuth.deDocument comprises 8 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall b
4、e considered authoritative.06.16DIN ISO 11512:2016-06 2 A comma is used as the decimal marker. Start of application The start of application of this standard is 2016-06-01. Contents Page National foreword .3 National Annex NA (informative) Bibliography 4 1 Scope 5 2 Normative references .5 3 Definit
5、ions 5 4 General requirements 6 4.1 Required brake systems .6 4.2 Brake controls 6 4.2.1 General 6 4.2.2 Release and reapplication 6 4.2.3 Automatic application .6 4.2.4 Control forces 6 4.3 Common components .7 5 Test conditions 7 5.1 Test course .7 5.2 Test preparations .7 5.3 Instrumentation 7 5.
6、4 Brake retarding force 7 6 Test and performance criteria for brake systems 7 6.1 Towing test for service and secondary brakes 7 6.1.1 Service brake performance criteria7 6.1.2 Secondary brake performance criteria 8 6.2 Static pull test for parking brake 8 6.2.1 Parking brake performance criteria .8
7、 6.2.2 Criteria for brakes remaining applied 8 DIN ISO 11512:2016-06 3 National foreword This standard includes safety requirements. This document (ISO 11512:1995) has been prepared by Technical Committee ISO/TC 23 “Tractors and machinery for agriculture and forestry” (Secretariat: AFNOR, France), S
8、ubcommittee SC 15 “Machinery for forestry” (Secretariat: SFS, Finland). The responsible German body involved in its preparation was DIN-Normenausschuss Kommunale Technik (DIN Standards Committee Municipal Services), Working Committee NA 051-03-05 AA Forstmaschinen. Attention is drawn to the possibil
9、ity that some elements of this document may be the subject of patent rights. DIN and/or DKE shall not be held responsible for identifying any or all such patent rights. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 6014 DIN ISO 6014 I
10、SO 6814 DIN ISO 6814 It is intended to also adopt the following ISO Standards as German national standards: ISO 8084, Machinery for forestry Operator protective structures Laboratory tests and performance requirements ISO 13860, Machinery for forestry Forwarders Terms, definitions and commercial spe
11、cifications DIN ISO 11512:2016-06 4 National Annex NA (informative) Bibliography DIN ISO 6014, Earth moving machinery Determination of ground speed1)DIN ISO 6814, Machinery for forestry Mobile and self-propelled machinery Terms, definitions and classification DIN ISO 8082-1, Self-propelled machinery
12、 for forestry Laboratory tests and performance requirements for roll-over protective structures Part 1: General machines DIN ISO 8082-2, Self-propelled machinery for forestry Laboratory tests and performance requirements for roll-over protective structures Part 2: Machines having a rotating platform
13、 with a cab and boom on the platform DIN ISO 8083, Machinery for forestry Falling-object protective structures (FOPS) Laboratory tests and performance requirements DIN ISO 11169, Machinery for forestry Wheeled special machines Vocabulary, performance test methods and criteria for brake systems DIN I
14、SO 13861, Machinery for forestry Wheeled skidders Terms, definitions and commercial specifications DIN ISO 13862, Machinery for forestry Feller-bunchers Terms, definitions and commercial specifications 1) Users of this standard should note that DIN ISO 6014 was withdrawn in May 2003 without replacem
15、ent. DIN ISO 11512:2016-06 5 Machinery for forestry - Tracked special machines - Performance criteria for brake systems 1 Scope This International Standard specifies performance test methods and criteria to enable uniform assessment of the service, secondary and parking brake systems of tracked spec
16、ially designed forestry machines. This International Standard applies to self-propelled tracked special forestry machines defined in ISO 6814 with a maximum design speed, determined in ac cordance with ISO 6014, of 20 kmfh or less. 2 Normative references The following standards contain prov1s1ons wh
17、ich, through reference in this text, constitute provisions of this International Standard. At the time of publi cation, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibili
18、ty of applying the most re cent editions of the standards indicated below. Members of IEC and ISO maintain registers of cur rently valid International Standards. ISO 6014:1986, Earth-moving machinery- Determi nation of ground speed. ISO 6814:1983, Machinery for forestry- Mobile and self-propel/ed ma
19、chinery- ldentification vocabulary. 3 Definitions For the purposes of this International Standard, the following definitions apply. 3.1 brake system: All the components which com bine together to stop andfor hold the machine. NOTE 1 Such systems include the control(s). means of brake actuation, the
20、brake(s) and all parts connecting the brake to the track. 3.1.1 service brake system: Primary system used for stopping and holding the machine. 3.1 .2 secondary brake system: System used for stopping the machine in the event of any single failure in the service brake system. 3.1 .3 parking brake sys
21、tem: System used to hold a stopped machine in a stationary position. 3.2 Brake system components 3.2.1 control: Component directly activated by the operator to cause a force to be transmitted to the brake(s). 3.2.2 brake actuation system: All of the com ponents between the control(s) and the brake(s
22、) which connect them functionally. 3.2.3 brake: Components which directly apply a force to oppose movement of the machine. NOTE 2 The brakes may, for example, be of friction, electrical or fluid types. 3.3 common component: Component that per forms a function in two or more brake systems. 3.4 brake
23、retarding force: Decelerating or holding force due to brake system action plus rolling resist ance, but excluding engine torque. NOTE 3 ln practice, this is the force measured in the tow-line between a machine w ith the test brake(s) applied and a pulling machine. DIN ISO 11512:2016-06 6 3.5 machine
24、 mass, m: Mass of a machine including - the heaviest combination of manufacturer-approved equipment (i .e. winch, dozer, felling head, grapple, etc.) and components (i.e. cab, protective structures, etc.); - an operator of 75 kg; - full fuel, lubricating, hydraulic and cooling systems; - the manufac
25、turers rated payload, in the case of forwarders. 3.6 slope capability, a: Maximum slope, between 25 and 45, which the machine in transport mode as specified in 5.2 can aseend unaided with a ground friction coefficient. fi., of 1, w ithout exceeding its static tipping angle. NOTE 4 The slope capabili
26、ty may be determined on a prepared slope, or by tractive pulling force as specified in 5.1, where a is calculated as follows . F a = arcs1n mg-where F is the pulling force, in newtons; m is the machine mass (3.5). in kilograms; g is the gravitational constant (g = 9,81 mts2) . 4 General requirements
27、 The following requirements for brake systems apply to all crawler machines specified in clause 1. 4.1 Required brake systems 4.1.1 All machines shall be equipped w ith a) a service brake system; b) a secondary brake system; and c) a parking brake system. 4.1.2 No brake system shall contain a discon
28、necting device such as a clutch or shiftable gearbox w hich al lows disabling of the brake(s). This requirement does not apply to devices specif ied in 4.1 .3 and 4.1.4. 4.1.3 Brake disconnecting devices designed to allow movement of disabled machines shall be located out side the operators station
29、unless they can be re applied immediately. 4.1.4 Apower source disconnect designed for cold weather starting which also disables a brake system shall require application of the parking brake prior to disconnection. 4.2 Brake controls 4.2.1 General All brake system controls shall be capable of being
30、applied by a person sitting in the operators seat. 4.2.2 Release and reapplication The secondary and parking brake system(s) control(s) shall be arranged so that they cannot be released from the operators seat once t hey have been applied unless they can be reapplied immediately f rom t he operators
31、 seat . 4.2.3 Automatie application Secondary and pa rking brake systems may be applied automatically. 4.2.4 Control forces The force applied to the brake control shall not exceed the Ievels given in table 1 w hen the required brake system performance in table 3 is measured. Table 1 - Maximum test f
32、orce Ievels Force Type of control max. N Finger grasp (flip Ievers, switches) 20 Hand grasp: - upwards 400 -fore-aft, sidearm pull, downward 300 Foot treadle (ankle control) 350 Footpedal (leg control: power-assisted or not) 600 DIN ISO 11512:2016-06 7 4.3 Common components Brake systems may use com
33、mon components; how ever, failure of any single component shall not reduce the effectiveness of the machines stopping capability to less than the secondary brake system performance as defined in 6.1.2. 5 Test conditions 5.1 Test course The test course shall be relatively flat and smooth with a slope
34、 no greater than 1 % in the direction of travel. or 3 % transversely. The course shall be of sufficient size, materials and conditions to provide the traction required for the towing and pulling tests in clause 6. The maisture content of the soil shall be such that the mass of the test machine can b
35、e sup ported with only nominal sinkage. 5.2 Test preparations The machine mass shall be as specified in 3.5. All parameters relating to braking systems (brake ad justment, brake pressures, etc.) shall be within the machine manufacturers specifications. No manual adjustment(s) shall be made to the br
36、ake system(s) during any single test. Connections for towing or pulling shall be made as low as possible on the drawbar or other appropriate connecting point(s). Blades, dozers, grapples, felling heads and other equipment shall be ca rried in the transport or travel position recommended by the manuf
37、acturer. Burnishing (conditioning) of brakes before testing is permissible. The burnishing procedure shall be indi cated in the operators manual for the machine and sha ll be verified by consultation with the machine manufacturer. lmmediately prior to a test, the machine shall be op erated until the
38、 machine fluids, i.e. engine and trans mission oils, are at normal operating temperature as specified by the manufacturer. 5.3 Instrumentation Instrumentation to measure and record the par ameters within the accuracy specified in table 2 shall be provided. Table 2 - Instrument accuracy Ieveis Parame
39、ter measured Accuracy % Brake system pressure 2 Machine mass 2 Brake control actuating force 1 Slope 1 Brake retarding force 1 5.4 Brake retarding force A means (normally another machine) to generate the towing or pulling force required by the performance tests in 6.1.1, 6.1.2 and 6.2.1 shall be pro
40、vided. 6 Test and performance criteria for brake systems 6.1 Towing test for service and secondary brakes The service and secondary brake performance shall be tested by towing the machine with the trans mission control in neutral at a speed of 10 % to 40 % of the maximum Ievei surface speed deter mi
41、ned in accordance w ith ISO 6014. Apply the brake(s) and measure the brake retarding and brake control forces. Machines designed w ith hydrostatic brakes or auto matic brakes which apply when the transmission control is in neutral may be tested by driving at the same speed as the towing machine and
42、then applying the brake system(s) being tested by placing the ap propriate control in the braking position or neutral. 6.1.1 Service brake performance criteria Application of the service brake system with the force specified in table 1 shall cause the moving test ma chine to develop a brake retardin
43、g force as specified in table 3 in both the torward and reverse directions. Table 3 - Performance criteria for brake systems Brake system Brake retarding force N Service 9,8m sin cx (dynamic) Secondary 4,9m sin cx (dynamic) Parking 9,8m sin cx (static) m is the machine mass in kilograms (see 3.5) cx
44、 is the slope capability in degrees (see 3.6) DIN ISO 11512:2016-06 8 6.1.2 Secondary brake performance criteria Since tracked machines have two independent brakes of nominally equal capacity, application of the sec ondary brake system with the force specified in table 1 shall cause at least one tra
45、ck on the moving test machine to develop a brake retarding force equal to the value specified in table 3, in both the torward and reverse directions. 6.2 Static pull test for parking brake The parking brake performance shall be tested by pulling on the stationary test machine w ith the parking brake
46、 applied and the transmission control in neutral. Measure the static brake retarding and brake control forces. 6.2.1 Parking brake performance criteria Application of the parking brake system with the force specified in table 1 shall hold the test machines tracks stopped and develop a static pulling
47、 force as specified in table 3 in both the torward and reverse directions. 6.2.2 Criteria for brakes remaining applied After application, the parking brake system shall maintain the parking brake performance specified in table 3 rega rdless of any contraction of the brake parts or leakage of any kind. This system shall not be de pendent upon an exhaustible energy source.
