1、_ SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising there
2、from, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions. Copyright 2013 SAE International All rights reserved. No part of this p
3、ublication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-497
4、0 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/J318_201305 SURFACE VEHICLE RECOMMENDED PRACTICE J318 MAY2013 Issued 1967-11 Revi
5、sed 2013-05 Superseding J318 JUN2012 Automotive Air Brake Line Couplers (Gladhands) RATIONALE This document is being revised to update the test pressure, corrosion requirements and allowable leak rates. 1. SCOPE This SAE Recommended Practice is intended to provide design, interchangeable dimensions,
6、 testing procedures, performance requirements, and minimum identification for gladhand-type air line couplers used to connect the brake systems of trucks, truck-tractors, trailers, and dollies when these vehicles are joined to operate as a combination unit. 1.1 Purpose The purpose is to provide coup
7、ler halves for brake lines on one vehicle that will be identified and compatible with the coupler halves on the brake lines of another vehicle. 2. REFERENCES 2.1 Applicable Document The following publication forms a part of the specification to the extent specified herein. 2.1.1 ASTM Publication Ava
8、ilable from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org ASTM B117 Standard Method of Salt Spray (Fog) Testing 3. DESIGN AND INTERCHANGE ABILITY DIMENSIONS 3.1 Design is limited only to those areas having dimensions that
9、ensure interchangeability. Any material may be used, providing that the coupler meet the performance requirements. Other devices may be included in the gladhand, such as a quick-release valve or shut-off valve. Recommended practices for these devices are not included in this document. SAE J318 Revis
10、ed MAY2013 Page 2 of 7 3.2 General design and interchangeability dimensions are shown for polarized and non-polarized couplers as follows in Figures 1 to 3. Use of non-polarized couplings is not recommended because they will mate with either polarized couplings which could result in incorrect connec
11、tions between vehicles. FIGURE 1 - CONTROL (SERVICE) AIR BRAKE COUPLER SAE J318 Revised MAY2013 Page 3 of 7 FIGURE 2 - SUPPLY (EMERGENCY) AIR BRAKE COUPLER SAE J318 Revised MAY2013 Page 4 of 7 FIGURE 3 - UNIVERSAL AIR BRAKE COUPLER SAE J318 Revised MAY2013 Page 5 of 7 4. TEST PROCEDURE 4.1 Corrosion
12、 Resistance Test Two new pairs of couplers (one pair properly coupled with the threaded ports(s) plugged and without internal pressure, and one pair uncoupled) shall be subjected to ASTM B117 for 240 h. 4.2 Endurance Test A new pair of couplers shall be coupled and uncoupled in the normal manner for
13、 2500 complete cycles at a rate (speed) of 15 to 25 cycles per minute. One complete cycle shall consist of one coupling and one uncoupling. 4.3 Break Away Test Properly joined, a new pair of couplers shall be pulled apart (10) times when connected to a line having 931 kPa 34 kPa (135 psi 5 psi) air
14、pressure under a gradually applied load of not less than 222 N (50 lbf) nor more than 1334 N (300 lbf) along the hose axis. 4.4 Drop Test Two new couplers shall be dropped from 1.8 m (6 ft) minimum onto concrete surface immediately after exposure to a temperature of -40 C 3 C (-40 F 5 F) for a minim
15、um of 6 h. Orientation of the couplers shall be such that the couplers impact the concrete surface at points A and B as indicated in Figures 1 to 3. 4.5 Elevated Temperature Two new pairs of couplers (one properly coupled and one uncoupled) shall be exposed to a temperature of +70 C 3 C (+158 F 5 F)
16、 for a minimum of 24 h. 4.6 Low Temperature Two new pairs of couplers (one properly coupled and one uncoupled) shall be exposed to a temperature of 40 C 3 C (40 F 5 F) for a minimum of 6 h. 5. PERFORMANCE REQUIREMENTS After standard completion of each test procedure shown under Section 4, the couple
17、r(s) shall satisfy each of the following performance requirements. 5.1 Coupling and Uncoupling Torque Performance The torque required to uncouple a pair of couplers in a normal manner at an ambient temperature of +24 C 8 C (+75 F 15 F) and at 689 kPa 34 kPa (100 psi 5 psi) air pressure shall be 11.3
18、 Nm 5.6 Nm (100 lbf-in 50 lbf-in). The torque required to couple and uncouple a pair of couplers at an ambient temperature of +24 C 8 C (+75 F 15 F) and at 0 kPa (0 psi) air pressure shall be 11.3 Nm 5.6 Nm (100 lbf-in 50 lbf-in). 5.2 Leak Rate A pair of coupler halves, when joined properly is allow
19、ed a maximum leak rate of 25 SCCM of free air at 931 kPa 34 kPa (135 psi 5 psi) air pressure and ambient temperature of +24 C 8 C (+75 F 15 F). SAE J318 Revised MAY2013 Page 6 of 7 6. PERFORMANCE TEST 6.1 Corrosion Resistance After being tested per 4.1, the couplers shall meet the coupling and uncou
20、pling torque requirements per 5.1 and leak rate requirements per 5.2. 6.2 Endurance Cycle After being tested per 4.2, the couples shall meet the coupling and uncoupling torque requirements per 5.1 and leak rate requirements per 5.2. 6.3 Breakaway After being tested per 4.3, the couplers shall meet t
21、he coupling and uncoupling torque requirements per 5.1 and leak rate requirements per 5.2. 6.4 Drop Test After being tested per 4.4, the couplers shall meet the coupling and uncoupling torque requirements per 5.1 and leak rate requirements per 5.2. 6.5 Elevated Temperature Test While still at temper
22、ature, after being tested per 4.5, the couplers shall meet the coupling and uncoupling torque performance per 5.1 on the uncoupled pair and the leak rate performance per 5.2 on the coupled pair. 6.6 Low-Temperature Test While still at temperature after being tested per 4.6, the coupling and subseque
23、nt uncoupling torque on the uncoupled pair shall be 11.3 Nm 5.6 Nm (100 lbf-in 50 lbf-in) at 0 kPa (0 psi) air line pressure. While still at temperature after 4.6, the coupled pair shall meet the leak rate performance per 5.2. 7. IDENTIFICATION 7.1 The coupler halves shall be permanently marked for
24、identification purpose by using embossed lettering or other suitable means that ensures the lettering is indelible and durable. 7.2 Function identification for the three types of couple halves shown under 3.1 shall be as follows or abbreviations of the following: “CONTROL” or “SERVICE” per Figure 1
25、“SUPPLY” or “EMERGENCY” per Figure 2 “UNIVERSAL” per Figure 3 7.3 Optional manufacturers identification may consist of the manufacturers name, code number, and part number. 7.4 When the color coding is utilized for additional function identification, the colors shall be red for the supply or emergen
26、cy coupler, blue for the control or service coupler, and no color or any color other than red or blue for universal couplers. SAE J318 Revised MAY2013 Page 7 of 7 8. REMARKS 8.1 The United States Army Tank Automotive Command in Warren, Michigan, has acknowledged this document unit under their commer
27、cial item description (C.I.D.) number A-A-52484, superseding AA-52154, MS 35746F and MIL-C 62005A. 8.2 International Standard ISO 1728-1980 specifies only dimensions for supply and control of pneumatic brake couplers, only to ensure interchangeability and compatibility between ISO couplers. While th
28、e ISO couplings are similar to, and have the same purpose as SAE J318 couplings, they are not compatible with SAE J318 couplings. 8.3 When using the Universal SAE J318 couplers as shown on Figure 3, the user has to be aware of the universal non-polarizing feature of this coupler in reference to the
29、total air brake system functions and performances. 9. NOTES 9.1 Marginal Indicia A change bar (l) located in the left margin is for the convenience of the user in locating areas where technical revisions, not editorial changes, have been made to the previous issue of this document. An (R) symbol to
30、the left of the document title indicates a complete revision of the document, including technical revisions. Change bars and (R) are not used in original publications, nor in documents that contain editorial changes only. PREPARED BY THE SAE TRUCK AND BUS BRAKE SUPPLY AND CONTROL COMPONENTS COMMITTEE
