GB 32157-2015 PDF in English
GB 32157-2015 (GB32157-2015) PDF English
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Power take-off of fire fighting vehicles
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GB 32157-2015: PDF in English GB 32157-2015
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 13.220.10
C 84
Power Take-Off of Fire Fighting Vehicles
ISSUED ON: OCTOBER 09, 2015
IMPLEMENTED ON: JANUARY 01, 2016
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
Introduction ... 4
1 Scope ... 5
2 Normative References ... 5
3 Terms and Definitions ... 5
4 Classification and Model ... 6
5 Technical Requirements ... 7
6 Test Methods ... 9
7 Inspection Rules ... 12
8 Mark, Package, Transportation and Storage ... 13
Power Take-Off of Fire Fighting Vehicles
1 Scope
This Standard specifies the terms and definitions, classification and model, technical
requirements, test methods, inspection rules, and mark, package, transportation and
storage for the power take-off of the fire fighting vehicle.
This Standard is applicable to the power take-off of the fire fighting vehicle.
2 Normative References
The following documents are essential to the application of this document. For the
dated documents, only the versions with the dates indicated are applicable to this
document; for the undated documents, only the latest version (including all the
amendments) are applicable to this document.
GB/T 191 Packaging – Pictorial Marking for handling of Goods
GB 7956.1 Fire Fighting Vehicles - Part 1: General Technical Specifications
GB/T 13306 Plate
GB/T 13384 General Specification for Packaging of Mechanical and Electrical
Products
JB/T 7929-1999 Cleanliness for Gear Drive Units
QC/T 518-2013 Tightening Torque for Automotive Threaded Fasteners
3 Terms and Definitions
For the purpose of this document, the terms and definitions given in GB 7956.1 and
the following apply.
3.1 Power take-off; PTO
The device for outputting the power from the engine of the fire fighting vehicle to a
device other than the vehicle travelling system.
5.3 Running-in requirements
The PTO is subjected to the no-load running-in test at the rated output speed of the
rated torque, it shall be operated normally, and without abnormal noise.
5.4 Manipulation performance
5.4.1 The PTO shall be easy to operate, connected properly; and be free of the stuck
or gear off phenomenon.
5.4.2 For the PTO with manual gear up and gear off, when the input shaft speed is no
greater than 100r/min, it can be gear up and gear off; its operating force shall be
100N~300N.
5.4.3 For the PTO with electrical gear up and gear off, when the input shaft speed is
no greater than 100r/min, it can be gear up and gear off at the rated operating voltage.
5.4.4 For the PTO with pneumatical gear up and spring gear off, when the input shaft
speed is no greater than 100r/min, it can be gear up at the rated operating air pressure;
and can be gear off automatically after releasing the air pressure. For the PTO with
pneumatical gear up and gear off, when the input shaft speed is no greater than
100r/min, it can be gear up and gear off at the rated operating air pressure.
5.4.5 The PTO shall be carried out 5000 times of continuous gear up and gear off tests,
the PTO shall work normally during the test, no stuck, gear off or the like abnormal
phenomenon shall appear.
5.5 Sealing requirements
5.5.1 Sealing requirements for cooling pipeline
The cooling pipeline of the PTO shall be carried out the sealing test, there shall be no
leakage.
5.5.2 Sealing requirements for pneumatic device
The pneumatic device of the PTO shall be carried out the sealing test, the pressure
drop shall not exceed 5% test pressure.
5.5.3 Sealing requirements for the cabinet
The cabinet of the PTO shall be carried out sealing test, there shall be no leakage.
5.6 Cleanliness requirements
The cleanliness of the PTO shall conform to the Class-H specified in JB/T 7929-1999.
5.7 Noise
meets the requirements of 5.2.2.
6.2.3 Check the lubricating oil level check port by visual examination; judge whether
the test result meets the requirements of 5.2.3.
6.2.4 Check the cooling pipeline and drain water switch of the PTO by visual
examination; judge whether the test result meets the requirements of 5.2.4.
6.2.5 Check the temperature sensor and the fuel filler of the PTO by visual examination;
judge whether the test result meets the requirements of 5.2.5.
6.3 Running-in test
Install the PTO onto the test bench; add lubricating oil with grade and capacity specified
by the PTO operation. No-load operate for 2h at the rated output rotation speed; judge
whether the test result meets the requirements of 5.3.
6.4 Manipulation performance
6.4.1 Operate the PTO; judge whether the test result meets the requirements of 5.4.1.
6.4.2 Install the PTO onto the test bench; select the dynamometer with appropriate
range; make the direction of the force measurement consistent with the direction of
gear up force (gear off force); under the condition that the input shaft speed is no
greater than 100r/min, carry out 3 times gear up and gear off tests; measure the gear
up and off forces; judge whether the test result meets the requirements of 5.4.2.
6.4.3 Install the PTO onto the test bench; under the condition that the input shaft speed
is no greater than 100r/min; carry out 3 times gear up and gear off tests at the rated
working pressure; judge whether the test result meets the requirements of 5.4.3.
6.4.4 Install the PTO onto the test bench; under the condition that the input shaft speed
is no greater than 100r/min; carry out 3 times gear up and gear off tests at the rated
working pressure; judge whether the test result meets the requirements of 5.4.4.
6.4.5 Install the PTO onto the test bench; when the input shaft speed is no greater than
100r/min, continuously carry out 5000 times gear up and gear off tests; judge whether
the test result meet the requirements of 5.4.5.
6.5 Sealing test
6.5.1 Slowly pressurize the cooling pipeline to 2.2MPa with a pressure test pump,
maintain for 3min; judge whether the test result meets the requirements of 5.5.1.
6.5.2 Supply air by 1.1 times of the maximum working allowable pressure of the
pneumatic device; keep the pressure for 5min; then judge whether the test result meets
the requirements of 5.5.2.
adopted; the provided cooling water pressure is 0.9MPa ~ 1.1MPa; the temperature
shall be no treater than 30°C); at the rated rotation speed, continuously operate for 1h
with the 1.1 times of the rated output torque; judge whether the test result meets the
requirements of 5.9.
7 Inspection Rules
7.1 Exit-factory inspection
Each product shall be subjected to the exit-factory inspection; the exit-factory
inspection items of the PTO shall at least include the items specified in Table 1.
7.2 Type inspection
7.2.1 In case one of the following conditions, the type inspection shall be carried out:
a) The trial-type identification of the new product;
b) Trial production and identification of the old products transferring to other
factories;
c) After the formal production, significant changes for the structure, process and raw
materials;
d) Resume production after 2-year production suspension;
e) Adjustment after the major quality accident;
f) The National Quality Supervision Agency propose the requirements according to
the law.
7.2.2 The total number of test samples shall be no less than 3; and randomly select
one sample.
7.2.3 Type inspection items indicate all items specified in Table 1.
7.2.4 If all the inspection items meet the requirements, then the type inspection of this
product shall be judged qualified. If one of the items from Items 2~9 in Table 1 is
disqualified then such product shall be judged as disqualified. If the first item of
appearance inspection does not meet the requirements, it is allowed to rework; when
the re-inspection is qualified, then the type inspection of this product is qualified;
otherwise it is disqualified.
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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