JB/T 10772-2007General technical requirements for narrow gauge trolley industrial and mining electric locomotives (English PDF)

5.1 Use environmental conditions

5.1.1 The altitude does not exceed 2000m.

5.1.2 The ambient temperature is -25°C~+40°C.

5.1.3 The average relative humidity of the wettest month is not more than 90%.

The average minimum temperature of the same month is not higher than +25°C.

5.1.4 The voltage of the electric locomotive shall meet the requirements of GB/T

999.

5.1.5 When the use environmental conditions of the electric locomotive exceed

the above conditions, it shall be determined by the user and the manufacturer through negotiation.

5.2 Limit deviations of external dimensions

5.2.1 The limit deviation of the length dimension is ±1%.

5.2.2 The limit deviation of the width dimension is ±0.5%.

5.2.3 The limit deviation of the height dimension is ±1%.

5.3 Variation range of working height of pantograph

5.3.1 For underground electric locomotives, it shall not be less than 400mm.

5.3.2 For narrow-gauge open-pit electric locomotives, it shall not be less than

800mm.

5.3.3 For adit and open-pit dual-purpose electric locomotives, it shall not be less than 1200mm.

5.4 Limit deviations of mass in working order, axle load and wheel weight

5.4.1 The limit deviation of the mass in working order to the nominal adhesive weight is 0%~10%.

5.4.2 In working order, the limit deviation of any actual axle load from the actual average axle load is ±3%.

5.4.3 In working order, the difference between the actual wheel weight on either

side and the average of the actual wheel weight on both sides is ±4%. For any given axle, the limit deviation of each actual wheel weight from the actual

5.10.2

No oil leakage is allowed at the wheel bearings of the electric locomotive.

5.11 Wheel set

5.11.1 The wheel set shall comply with the provisions of JB/T 5865.

5.11.2 The wheel tread profile shall meet the requirements of GB/T 4695.

5.11.3 For combined transmission, the tolerance of wheel rolling circle diameter

is not more than 0.75mm.

5.11.4 For non-combined transmission, the tolerance of wheel rolling circle

diameter is not more than 2mm.

5.12 Braking

5.12.1 When the one-hour speed of the electric locomotive is greater than or equal to 10km/h, the electric locomotive shall have at least two braking methods.

5.12.2 The brake-shoe of the braking device shall comply with the regulations of JB/T 3267. When braking, it shall be close to the wheel.

5.12.3 The braking ratio (the ratio of the brake-shoe pressure to the nominal

adhesive weight value) shall meet the following requirements:

a) The braking ratio of the manual braking device is not less than 70%;

b) The braking ratio of dynamic braking (excluding electric braking) device is not less than 80%. The maximum braking ratio of underground electric locomotives shall not exceed 100%. The maximum braking ratio of electric locomotives for narrow-gauge open-pit use shall not exceed 110%;

c) The normal braking ratio with train braking device is not less than 70%;

the emergency braking ratio is not less than 80%.

5.12.4

When a single machine is running on a flat track at the maximum speed, and an emergency braking is applied, the braking distance for the underground electric locomotive shall meet the requirements of Table 3. The braking distance for the open-pit locomotive shall meet the requirements of Table 4.

Table 3

Braking distance (not more than)

Adhesive weight

Underground electric locomotive

5.23 Safety protection

The electric locomotive must be designed with a simple and reliable cab and door for installation.

5.24 Instrument and marker lamp

5.24.1 Electric locomotives with a one-hour speed of 10km/h and above shall be equipped with a speed indicator. Electric locomotives with air brakes shall be equipped with air pressure gauges.

5.24.2 Electric locomotives shall be equipped with red marker lamps, to show the direction of travel.

5.25 Corrosion resistance

5.25.1 Except for friction surfaces, the surfaces of all metal and wooden parts

shall have anti-corrosion protective coating.

5.25.2

The painting shall conform to the requirements of the drawings.

7.1 Inspection classification

Electric locomotive inspection includes inspection after final assembly, exit- factory test, type test, industrial operation test, acceptance test and research test. The results of research tests shall not be used as the basis for product evaluation. Before the product test, according to the items listed in Table 7, carry out the inspection after final assembly. After passing the inspection, carry out the test according to the items listed in Table 8.

7.2 Inspection after final assembly

7.2.1 When the final assembly of the product is completed, it shall be inspected before it enters the exit-factory test.

7.2.2 The inspection after final assembly shall be carried out in accordance with the inspection items listed in Table 7.

carried out according to the method of JB/T 3114.

8.1 Marking

8.1.1 Electric locomotives used in underground mines shall have a mining product mark approval certificate issued by a designated organization of the state. The safety mark certificates and nameplates of mining products shall be reliably fixed.

8.1.2 The nameplates of electric locomotives, safety mark certificates and

warning signs of mining products must be made of bronze, brass or stainless steel. The thickness shall not be less than 1mm. But the thickness of the nameplates and warning signs of instruments and meters is allowed to be no less than 0.5mm.

8.1.3

The basic content of the nameplate of electric locomotive:

a) Manufacturer name;

b) Product name;

c) Trademark;

d) Product model;

e) Mark (when necessary);

f) Manufacturing date (or serial number) or production batch number, exit- factory serial number;

g) Main parameters of product (such as the adhesive weight, gauge, rated voltage, one-hour tractive effort, one-hour speed of electric locomotive);

h) Mining product safety mark certificate number.

8.1.4 For electric locomotives with four axles, the sequence number of the axles

shall be marked on the axle box or the upper appropriate position. And it shall match the sequence number of the motor on the electrical schematic diagram.

8.1.5 Except for the friction surface and contact surface, the exposed conductor

shall have red marks.

8.1.6

If the door of the electric apparatus room (box) does not have a safety locking device, there shall be a warning sign preventing electric shock.

8.2 Packaging

8.2.1 The packaging shall meet the requirements of GB/T 13384. The packaging form can be negotiated between the user and the manufacturer.

8.2.2 The packaging container shall have sufficient strength and shock resistance; shall be rain-proof, moisture-proof, and corrosion-proof by acid and alkali substances.

8.2.3 The exposed surface and coating of electric locomotive shall be subjected to anti-rust and anti-corrosion treatment.

8.2.4 Documents accompanying the package:

a) Product conformity certificate;

b) Product specification;

c) Packing list;

d) List of accompanying spare parts, accessories and tools;

e) Other relevant technical information;

f) Copy of "mining product safety mark certificate".

8.2.5 Packaging mark:

The writing or symbols of the packaging mark shall be clear, not falling off, and not fading. Its contents are as follows:

a) Product model, name and quantity;

b) Exit-factory number and box number (or contract number);

c) Overall dimensions of the box (length×width×height);

d) Package weight;

e) Packing date;

f) Arrival and receiving organization;

g) Sending and forwarding organization;

h) Handling symbols shall meet the requirements of GB/T 191.

8.2.6 From the date of shipment, under normal storage and transportation

conditions, the manufacturer shall ensure that, for at least one year, the product