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QC/T 1059-2017

Chinese Standard: 'QC/T 1059-2017'
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Detail Information of QC/T 1059-2017; QC/T1059-2017
Description (Translated English): (Car cab torsion bar flip and lock mechanism)
Sector / Industry: Automobile & Vehicle Industry Standard (Recommended)
Date of Issue: 2017-01-09
Date of Implementation: 2017-07-01
Regulation (derived from): Ministry of Industry and Information Technology Announcement No.2 of 2017
Summary: This standard specifies the terms and definitions, requirements, test methods, inspection rules, marking, packaging, transportation and storage of the torsion bar type of the car cab.

QC/T 1059-2017
AUTOMOBILE INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 43.040.60
T 26
Truck Cab - Torsion-Type
Tilting and Locking Mechanism
汽车驾驶室 扭杆式翻转及锁止机构
ISSUED ON: JANUARY 09, 2017
IMPLEMENTED ON: JULY 01, 2017
Issued by: Ministry of Industry and Information Technology of PRC
Table of Contents
Announcement ... 3
Foreword ... 9
1 Scope ... 10
2 Normative References ... 10
3 Terms and Definitions ... 10
4 Requirements ... 11
5 Test Methods ... 14
6 Inspection Rules ... 17
7 Marking, Package, Transportation and Storage ... 18
Annex:
References, names and dates of implementation of 42 automotive industry
standards
No. Standard reference Standard name
Standard
reference being
substituted
Date of
implementation
250 QC/T 776-2017 Motor caravan QC/T 776-2007 2017-07-01
251 QC/T 1051-2017 Coach car 2017-07-01
252 QC/T 1052-2017 Communication vehicle 2017-07-01
253 QC/T 1053-2017 Concrete spraying vehicle 2017-07-01
254 QC/T 1054-2017 Tunnel cleaning vehicle 2017-07-01
255 QC/T 1055-2017 Drainage and rescue vehicle 2017-07-01
256 QC/T 218-2017
Technical
specifications for
steering column
upper combined
switch of automobile
QC/T 218-1996 2017-07-01
257 QC/T 1056-2017
Technical
requirements and test
methods for
automotive dual
clutch automatic
transmission
assembly
2017-07-01
258 QC/T 245-2017
Technical
specifications for
isolated plant of
compressed-natural-
gas (CNG)
automobile
QC/T 245-2002 2017-07-01
259 QC/T 247-2017
Technical
specifications for
isolated plant of
liquefied petroleum
gas
QC/T 247-2002 2017-07-01
260 QC/T 1057-2017 Car snow chains 2017-07-01
261 QC/T 1058-2017 Car fingerprint identification device 2017-07-01
273 QC/T 1060-2017
Automotive
hexagonal flower
flange bolts
2017-07-01
274 QC/T 1061-2017
Road transport
lightweight fuel tank
vehicle anti-overflow
system
2017-07-01
275 QC/T 1062-2017
Road transport
lightweight fuel tank
vehicle unloading
valve
2017-07-01
276 QC/T 1063-2017
Road transport
lightweight fuel tank
vehicle oil and gas
recovery components
2017-07-01
277 QC/T 1064-2017
Road transport
flammable liquid
dangerous goods
tank vehicle -
breathing valve
2017-07-01
278 QC/T 1065-2017
Road transport
flammable liquid
dangerous goods
tank vehicle -
manhole cover
2017-07-01
279 QC/T 789-2017
Performance
requirements and
bench test methods
of automobile electric
vortex retarder
assembly
QC/T 789-2007 2017-07-01
280 QC/T 316-2017
Bench test methods
of fatigue strength for
automobile service
brake
QC/T 316-1999 2017-07-01
281 QC/T 201-2017
Nylon pipe joint size
for automobile air
brake
QC/T 201-1995 2017-07-01
282 QC/T 1066-2017
Performance
requirements of cable
assembly for vehicle
parking brakes and
bench test method
2017-07-01
Truck Cab - Torsion-Type
Tilting and Locking Mechanism
1 Scope
This Standard specifies the terms and definitions, requirements, test methods,
inspection rules, marking, package, transportation and storage for the truck cab –
torsion-type tilting and locking mechanism.
This Standard is applicable to the truck cab – torsion-type tilting and locking
mechanism.
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 1771 Paints and Varnishes-Determination of Resistance to Neutral Salt
Spray
GB/T 10125 Corrosion Tests in Artificial Atmospheres - Salt Spray Tests
QC/T 518 Tightening Torque for Automotive Threaded Fastener
3 Terms and Definitions
For the purposes of this document, the following terms and definitions apply.
3.1 Cab tilting mechanism
The mechanism that allows the cab to be turned over, held in a specific position, and
returned to the original position during maintenance of the engine compartment.
3.2 Torsion bar cab tilting mechanism
The cab tilting mechanism taking the torsion bar as the energy storage element; and
is divided into single torsion bar cab tilting mechanism and double torsion bar cab tilting
mechanism must not have abnormal noise.
4.1.3 After the locking mechanism is unlocked, the cab is not allowed to automatically
turn to the maximum opening position of the cab without relying on external force (the
limit stay bar is fully open).
4.1.4 After the stay bar is released from the limit, the cab shall not fall automatically
without relying on external force.
4.1.5 The position for the operating device of cab tilting mechanism and cab locking
mechanism shall be easy to operate.
4.1.6 The cab locking mechanism shall be equipped with anti-misoperation device.
4.1.7 The vehicle shall be able to lock the cab firmly and reliably under normal driving
and emergency braking conditions.
4.1.8 Under the locking state, the positioning in the direction of the side, front and rear
of the cab shall be correct, firm, and reliable.
4.1.9 The easy-to-see parts near the cab tilting and operating mechanism shall have
the textual instructions and safety warnings for the proper use of the operating
mechanism.
4.1.10 The cab tilting mechanism shall be equipped with stay bar; when tilting and
staying, the stay bar shall have the safety protection device. When the tilting angle
reaches the design requirements, it can self-lock. The cab tilting angle shall be no less
than 0° and no more than 40°.
4.1.11 The adjustment and maintenance of the cab tilting mechanism and cab locking
mechanism shall be carried out as per the instruction manual of the product.
4.1.12 The cab tilting mechanism and cab lock mechanism shall be numbered or coded;
and shall be traceable.
4.1.13 The rotary pair of each connection mechanism shall be flexible and free of
sticking.
4.1.14 Tightening torque of bolt connection parts, except for special provisions, shall
conform to the provisions of QC/T 518.
4.2 Performance requirements
4.2.1 The locking strength shall meet the following requirements:
--- After testing as per 5.3.1, the safety lock hook shall be free of cracks and
deformation;
5 Test Methods
5.1 Test site
5.1.1 The site for parking the test vehicle shall be horizontal, solid and flat.
5.1.2 The front end of the cab shall reserve sufficient space for tilting.
5.2 Vehicle state
5.2.1 The vehicle state shall meet the technical condition requirements proposed by
the manufacturer against such type of vehicle.
5.2.2 Before test, the vehicle shall be stopped stably; while the cab shall remain the
exit-factory state.
5.3 Measurement of locking strength
5.3.1 Install the operating mechanism on the test bench; hang the 2000N weight block
on the safety lock hook; after standing for 100h, dismantle and measure.
5.3.2 Install the operating mechanism on the test bench; hang the 5000N weight block
on the safety lock hook; after standing for 100h, dismantle and measure.
5.4 Operating force for tilting and resetting
5.4.1 Test instrument and device
Force gauge: range of 500N; accuracy level of ±5%.
5.4.2 Method
5.4.2.1 Measurement for operating force of tilting
After unlocking, slowly raise the cab to a static balance; connect the force gauge to the
tilting handle; push the tilting handle through the force gauge slowly and
perpendicularly to the handle (tangentially along the center of the rotation) till the cab
is tilted to the support position; the maximum value displayed by the force gauge during
the tilting process is the operating force of such tilting.
5.4.2.2 Measurement for operating force of resetting
After self-unlocking of the stay bar, slowly fall the cab to a static balance; connect the
force gauge to the tilting handle; push the tilting handle through the force gauge slowly
and perpendicularly to the handle (tangentially along the center of the rotation) till the
cab is tilted to the locking position (hooked by the safety locking hook); the maximum
value displayed by the force gauge during the falling process is the operating force of
6 Inspection Rules
6.1 Exit-factory inspection
6.1.1 The product shall be carried out exit-factory inspection according to the specified
items; only after passing the inspection can the product leave the factory or store in
the warehouse.
6.1.2 The exit-factory inspection items shall be 4.1.1, 4.1.13.
6.1.3 Randomly take 1~2 sets of products from the same batch to carry out exit-factory
inspection; if one of the inspection items is unqualified, then such batch of products
shall be judged to be unqualified.
6.2 Type inspection
6.2.......
Related standard:   QC/T 1051-2017  QC/T 1052-2017
   
 
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