GB/T 32861-2016 in English

《GB/T 32861-2016道路车辆 牵引车与挂车之间的电气和气动连接位置》由TC114（全国汽车标准化技术委员会）归口，TC114SC13（全国汽车标准化技术委员会挂车分会）执行，主管部门为工业和信息化部。

ChinaStandards.net is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.

This standard is developed in accordance with the rules given in GB/T 1.1-2009.

This standard has been redrafted and modified in relation to ISO 4009: 2000 Commercial Vehicles - Location of Electrical and Pneumatic Connections between Towing Vehicles and Trailers; technical deviations, together with their justifications, are as follows:

——The application scope of the standard is modified; center axle trailer combination is added as an applicable object of the standard;

——The standard structure is modified: Chapter 3 "Terms and Definitions" is added; Chapter 3 of international standard is divided into Chapters 4, 5, 6 and 7;

——The expression mode of dimensional range in Figures 1, 2, 3 and 4 is modified;

——The parameter description of note b in Figures 1, 2, 3 and 4 is modified;

——The installation locations of electrical and pneumatic connectors relative to vehicle traveling direction in Figures 1, 2 and 3 are modified (changed to "on right side of the vehicle);

——The standard expression is simplified: the expression “for ergonomic reasons" in Figures 1 and 2 is canceled; the expression “the location and length of pipes depends on the location of the coupling heads" in 3.4.2.1 and 3.4.2.2 is canceled;

——The requirements on "quick-connect joint" and "non-standard connector" are canceled; the pneumatic connector meeting GB/T 13881 is adopted and so the interchangeability of pneumatic connector of towing vehicles and trailers is improved.

The following editorial changes have been made to this standard:

——The standard name is modified; in order to be consistent with the names of current same kind of standards in China, "commercial vehicles" is changed to "road vehicles";

——The international standards given in "Normative References" are replaced by corresponding national standards identical to or modified in relation to international standards.

This standard was proposed by the Ministry of Transport of the People's Republic of China.

This standard is under the jurisdiction of SAC/TC 114 National Technical Committee on Automobiles of Standardization Administration of China.



Road Vehicles - Location of Electrical and Pneumatic Connections between Towing Vehicles and Trailers

1 Scope

This standard specifies the locations of coupling devices, size and clearance space as well as pipe connection for electrical and pneumatic connections between towing and towed commercial road vehicles.

It is applicable to heavy vehicles equipped with pneumatic braking systems and 24 V electrical equipment of the following types: drawbar-trailer combinations whose towing vehicles have rear-mounted couplings or couplings mounted forward and below, center axle trailer combination and articulated vehicles.

2 Normative References

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

GB/T 5053.1 Road Vehicles - Electrical Connections between Towing and Towed Vehicles - 7 Pole Connector Type 24 N (Normal) (GB/T 5053.1-2006, ISO 1185: 2003, IDT)
GB/T 13881 Pneumatic Braking Connections between Motor Vehicles and Towed Vehicles (GB/T 13881-1992, ISO 1728: 1980, MOD)
GB/T 20070 Road Vehicles - Mechanical Coupling between Tractors and Semi-trailers - Interchangeability (GB/T 20070-2006, ISO 1726: 2000, MOD)
GB/T 20716.1 Road Vehicles - Connectors for the Electrical Connection of Towing and Towed Vehicles - Part 1: Connectors for Braking Systems and Running Gears of Vehicles with 24V Nominal Supply Voltage (GB/T 20716.1-2006, ISO 7638-1: 2003, IDT)
GB/T 20717 Road Vehicles - Connectors for the Electrical Connection of Towing and Towed Vehicles - 15-pole Connector for Vehicles with 24V Nominal Supply Voltage (GB/T 20717-2006, ISO 12098: 2004, IDT)
GB/T 25088 Road Vehicles - Connectors for the Electrical Connection of Towing and Towed Vehicles - 7-pole Connector Type 24S (Supplementary) for Vehicles with 24 V Nominal Supply Voltage (GB/T 25088-2010, ISO 3731: 2003, MOD)

3 Terms and Definitions

For the purposes of this document, the following terms and definitions apply.

3.1

drawbar coupling

mechanical connection device mounted at chassis rear or forward and below, which has the function of guiding, fixing and angular movement when connected with trailers

4 Locations for Electrical and Pneumatic Connections

The locations for electrical and pneumatic connections shall be in accordance with Figure 1 and Figure 2 for towing vehicles with rear-mounted drawbar couplings, Figure 3 for towing vehicles with drawbar couplings mounted forward and below, and Figure 4 for articulated vehicles. Selection of the respective locations shall be made such that the connectors are completely within the areas, or zones, specified in the corresponding figure or figures.

Dimensions in millimetres



Within the shaded area, connections should be located as far outwards as possible. The connections should be able to be operated while standing on one side only of the drawbar. As alternatives to mounting the connections left and right of the vehicle’s longitudinal axis, they may be mounted only on the right side of the reference plane.

a Body rear edge.

b Distance from drawbar coupling center to rear of towing vehicle, not greater than 550 mm.

c Upper mounting surface.

d Lower mounting surface.

e Drawbar coupling vertical center line.

f Drawbar coupling lower edge.

g Drawbar coupling horizontal center line.

h Control line (see GB/T 13881).

i 7-pin N/15-pin (see GB/T 5053.1, GB/T 20717).

j Supply line (see GB/T 13881).

k 7-pin S (see GB/T 25088).

l ABS socket (see GB/T 20716.1).

m Reference line, top of chassis.

Figure 1 Locations for Electrical and Pneumatic Connections for Towing Vehicles with Rear-mounted Drawbar Coupling (Type A Location Zones)

Dimensions in millimetres



Within the shaded area, connections should be located as far outwards as possible. The connections should be able to be operated while standing on one side only of the drawbar. As alternatives to mounting the connections left and right of the vehicle’s longitudinal axis, they may be mounted on the right side only of the reference plane.

Note: Type B is a necessary alternative to type A (Figure 1) for the case where there is an additional installation according to type C (Figure 3).

a Body rear edge.

b Distance from drawbar coupling center to rear of towing vehicle, not greater than 550 mm.

c Upper mounting surface.

d Lower mounting surface.

e Drawbar coupling vertical center line.

f Drawbar coupling lower edge.

g Control line (see GB/T 13881).

h 7-pin N/15-pin (see GB/T 5053.1, GB/T 20717)

i Supply line (see GB/T 13881).

j 7-pin S (see GB/T 25088).

k ABS socket (see GB/T 20716.1).

l Reference line: lower edge of drawbar coupling or of chassis frame, whichever is lower.

m Top of chassis: the mounting limit may exceed the top-of-chassis limit if 220 mm minimum is not feasible.

Figure 2 Locations for Electrical and Pneumatic Connections for Towing Vehicles with Rear-mounted Drawbar Coupling (Type B Location Zones)

 
Dimensions in millimetres



Type B location zones may be additionally provided if the towing vehicle is equipped with an additional drawbar coupling on the rear cross-member. The arrangement of all connections shall be in the travel direction on the right-hand side.

a Body rear edge.

b Distance from drawbar coupling center to rear of towing vehicle, classified into three classes, i.e. 1,300 mm~1,400 mm, 1,500 mm~1,600 mm and 1,800 mm~1,900 mm.

c Mounting surface.

d Drawbar coupling horizontal center line.

e Road level.

f Drawbar coupling vertical center line.

g Drawbar coupling height in laden state, 355 mm~405 mm.

h Control line (see GB/T 13881).

i Supply line (see GB/T 13881).

j ABS socket (see GB/T 20716.1).

k 7-pin N/15-pin (see GB/T 5053.1, GB/T 20717).

l 7-pin S.

m Top of chassis: the mounting limit may exceed the top-of-chassis limit if 220 mm minimum is not feasible.

Figure 3 Locations for Electrical and Pneumatic Connections for Towing Vehicles with Drawbar Coupling Mounted Forward and Below (Type C Location Zones)

Dimensions in millimetres



a Centre of rotation.

b When connections are mounted lower than 450 mm, the sockets and plugs shall be oriented upwards. Moreover, if dimensions 100 mm to 650 mm are not fulfilled, the designer shall ensure that in operation the coiled pipes and contacts do not come in contact with sharp edges of the vehicle structure (a typical solution is the use of a fixture mounted in front of the wall of the trailer).

c Mounting surfaces.

d The turning radius of forepart of semi-trailer (see GB/T 20070).

e Supply line (see GB/T 13881)

f ABS socket (see GB/T 20716.1).

g 7-pin S (see GB/T 25088).

h 7-pin N/15-pin (see GB/T 5053.1, GB/T 20717).

i Control line (see GB/T 13881).

j Upper edge chassis frame (longitudinal/tractor).

k Upper edge of fifth wheel plate.

l For dedicated semi-trailers without a suitable front-wall structure, such as container chassis and semi-trailers with a front refrigeration unit, the electrical and pneumatic connections may be mounted lower than 800 mm. However, for safety reasons, mountings shall be as high as possible without risk of fouling the load.

m The arrangement area on the tractor may be turned 90° max. upwards from the horizontal.

Figure 4 Locations for Electrical and Pneumatic Connections for Articulated Vehicles (Type D Location Zones)

5 Electrical and Pneumatic Connection Dimensions

The types and dimensions of electrical connection should be in accordance with GB/T 5053.1, GB/T 25088, GB/T 20716.1 and GB/T 20717, and those of pneumatic connection should be in accordance with GB/T 13881.

Foreword i
1 Scope
2 Normative References
3 Terms and Definitions
4 Locations for Electrical and Pneumatic Connections
5 Electrical and Pneumatic Connection Dimensions
6 Clearance Space
7 Flexible Pipe Connection