GB 21500-2008Trackless tyred mining truck for underground mines - Safety requirements (English PDF)

6.1 General Requirements

6.1.1 shipped tub used parts should be manufactured in accordance with prescribed procedures approved product drawings and technical documents.

6.1.2 tub design and manufacturing operation should ensure the safe operation during normal use, and should be able to meet the expected physical performance requirements, and should not be Any risk.

6.1.3 shipped tub should adopt security technical measures to prevent possible overloading, dangerous material defects or other damage arising.

6.2.1 General requirements

6.2.1.1 all rotating parts exposed and may pose a danger to the operator of the transmission mechanism must install safety signs and safety Protection. Safety signs shall meet the requirements of GB 2894, the protective device shall comply with GB/T 8196 requirements.

6.2.1.2 All possible because of leakage and an ejection dangerous high-pressure hydraulic, fuel lines, install protective devices, the potential risk reduction To a minimum.

6.2.1.3 Safety distances to prevent danger zones being reached upper limbs should be consistent with GB 12265.1 requirements.

6.2.1.4 Safety distances to prevent danger zones being reached lower limbs should meet the requirements of GB 12265.2.

6.2.1.5 prevent crushing of parts of the human body should comply with GB 12265.3 minimum spacing requirements.

6.2.1.6 In order to prevent the tub shipped during transport and mobile service should be configured between the front and rear frame hinge frame locking device, locking device Shall comply with the provisions of JB/T 7692's.

6.2.1.7 The minimum size of each inlet repair parts shall comply with GB/T 17299 of.

6.2.1.8 should ensure the normal operation of transport carts on the slope design, operation and shutdown time, in any direction can not have tipping and sliding Possible.

6.2.1.9 tub should prevent transport of mineral loaded projectile wounding and affect other ground vehicle operation during transport.

6.2.1.10 shipped tub important moving parts locking bolts to take measures, and regularly check the tightening torque to prevent loose bolts in the job Fixed accidents.

6.2.2 Engine

6.2.2.1 transported tub should be low-pollution diesel engine, low-pollution diesel engines should meet the safety requirements of GB 20651.1. Airflow arrangement

6.2.2.2 Engine exhaust system and the cooling system should be fully taken into account the comfort and health of operators.

6.2.2.3 The fuel tank and engine fuel system shall be designed in a suitable location, and ensure that spills or leakage of oil droplets to only a trickle Surface.

6.2.2.4 in the engine compartment, all fuel, lubricating oil, hydraulic oil lines should be manufactured using fireproof materials and away from hot engine table Surface or the surface of the steel pipe between the engine/hose with a hot plate or install insulation shields, but the heat shield mounting plate or may not affect the engine compartment The flow of air.

6.2.2.5 in the engine compartment, the engine exhaust system shall not flame or glowing particles escape.

6.2.2.6 regularly check the air intake system and exhaust system resistance, prevent due to lack of engine intake and exhaust resistance is too large, performance degradation and thermal And dangerous.

6.2.2.7 Fuel system shall meet the following requirements.

a) fuel tank must be fixed to the manufacture of steel and damaged or hazardous least likely place.

b) fuel tank tightness test must be carried out, that is, at a pressure of at least 20kPa maintain at least 15min there should be no leaks.

c) the fuel tank filler should be readily accessible. When shipped in tub is designed with an inclined surface, jobs, stop, full fuel Not spill fuel from the fuel tank filler neck.

d) In order to maintain atmospheric pressure within the fuel tank, the fuel tank should be equipped with vent holes, and the use of filtering accuracy of the apparatus and not more than 125µm Ventilation filters. In order to prevent foreign matter into the tank, you should use the filter accuracy of less than 250µm refueling filter.

e) fuel tank shall be equipped with oil shut-off device.

f) If the fuel pump suction tube leak, the fuel system should be avoided due to gravity or siphon fuel from the tank led to be sucked out.

g) the fuel pipes should be used metal pipe or outside Wire braid hose. Fuel line arrangement should be considered mechanical vibration, corrosion and Cooling influence. The number of pipe joints should be minimized to reduce the potential for leaks using. Lowest position

6.2.3 Transmission

6.2.3.1 tub shipped the hydraulic transmission, power shift transmission, drive axle, drive shafts must be stable performance, easy adjustment, safe operation, Easy to maintain.

6.2.3.2 hydraulic transmission apparatus shall comply with JB/T 10135 of.

6.2.3.3 power shift transmission should be consistent with JB/T 8548 requirements.

6.2.3.4 drive axle should be consistent with the provisions of JB/T 8816's.

6.2.3.5 shaft shall comply with JB/T 7693's.

6.2.4 tires and rims Tire shall comply with GB/T 1190 and GB/T 2980, the rim should be consistent with the provisions of GB/T 2883's. We must comply with the tires Rim manufacturer's recommended use and maintenance methods, safety procedures, to ensure transport safety tub and operation and maintenance personnel.

6.2.5 Hydraulic System

6.2.5.1 the hydraulic system should be consistent with GB/T 15706.2 and GB/T 3766 the relevant safety requirements.

6.2.5.2 When shipped tub hydraulic circuit work, the working pressure must not exceed the circuit maximum pressure rating.

6.2.5.3 hydraulic circuit can not because of pressure fluctuations (pressure rise, loss, decline) and dangerous.

6.2.5.4 hydraulic circuit can not because of leakage or damage to the hydraulic components and the risk of hydraulic oil discharged hose sudden movement occurs.

6.2.5.5 hydraulic system hose, tube and pipe fittings should have sufficient strength, piping layout should consider transport and movement and then rotating tub Installation position in inspection and maintenance, the pipeline will not be affected or other hot engine parts, should not affect the electrical unprotected nearby Wire, cable. Otherwise, to take quarantine measures.

6.2.5.6 hydraulic system pressure relief valve must be installed if the valve is adjustable, it should have a lock and prevent any arbitrary adjustment Measures.

6.2.5.7 When the working pressure in the hose 5MPa above, the working temperature above 50 °C, and from the driver's seat when less than 1m, It must be added a guard should be strong, to protect the driver from injury hose burst suddenly arising, should not block the oil to splash to the operator Body.

6.2.5.8 hydraulic tank filler should be located in person standing on the ground easily accessible place, otherwise, shall be provided with the appropriate tools or equipment Convenient to the hydraulic fuel tank. When shipped in tub is designed with an inclined surface or stop operation, the hydraulic tank filler cap should ensure Filled with hydraulic oil tank can not overflow when bumpy hydraulic oil from the oil filler.

6.2.5.9 in the vehicle should be equipped with a monitor oil temperature, oil temperature when the oil temperature near the top of the manufacturer's instructions to the police.

6.2.5.10 all hydraulic components, in particular the hose and pipe shall be adequately protected to prevent damage to the external force.

6.2.5.11 in the lowest position on the hydraulic tank drain plug should be set.

6.2.5.12 hydraulic tank oil level should be set with a mechanical protection.

6.2.5.13 accumulators shall comply with the following requirements.

a) can not be welded, welding or machining on the accumulator.

6.3.1 General requirements

6.3.1.1 Design of electrical equipment, manufacture and installation shall comply with the provisions of GB 5226.1.

6.3.1.2 In addition to the cable between the battery and the starter motor, and all other circuit should be protected using a suitable fuse or Use protective devices GB 5226.1-2002 Protection in 7.2, 7.3.

6.3.2 Wire & Cable Safety requirements

6.3.2.1 Wire & Cable should comply with the relevant requirements of GB 5226.1-2002 in Chapter 13.

6.3.2.2 In addition to the armored cable or other cable protective measures should be adopted between the power line and the fuel, lubricating oil and hydraulic oil lines By masking or isolation protection to keep at least a distance of 150mm.

6.3.2.3 cable installation should not because of vibrations caused by the insulating layer wear or fatigue as a result of bending the cable insulation is damaged.

6.3.3 Battery

6.3.3.1 batteries should be consistent with GB/T 5008.1 requirements.

6.3.3.2 batteries should be placed in sturdy, ventilation and fire inside the battery, the battery box should be placed away from heat, minimum vibration, from Recently starter motor, easy maintenance areas.

6.3.3.3 should ensure that the battery cover and battery compartment battery inside and outside vent adequate ventilation to prevent normal operation transported tub Hydrogen and oxygen due to battery savings caused risk of bursting.

6.3.3.4 batteries should be fixed firmly to prevent the transport tub bumpy shift in the normal operating conditions and loosen the terminal.

6.3.3.5 Battery cover sufficiently rigid, metal cover over the inner surface should be at least 30mm away from the live parts of the battery.

6.4 operating environment

6.4.1 Temperature

6.4.1.1 If more than GB/T 18153 stipulated the hot surface temperature limit caused by exposure to hazardous surfaces, these surfaces should be equipped with guardrails Or cover.

6.4.1.2 When the job site temperature is below -5 °C or above 35 °C should take safety measures for heating and cooling.

6.4.1.3 When a transport tub use in cold environments, should be used in low temperature fuel, hydraulic oil, grease, equipped with a suitable antifreeze And battery, starter to make starting performance meet the relevant standards; electrical equipment, welding parts, thread sealing material connections should meet It requires low temperature environment.

6.4.1.4 When a transport tub used in high temperature environment, you want to increase the cooling capacity of the engine cooling system to prevent engine knock. Simultaneously Prevent tire burst.

6.4.2 Noise Under the specified conditions of use no-load high-speed operation, the driver operating position of noise limit is not greater than 97dB (A), workplace operations Continuous exposure to noise 8h person per day, noise level limit of sanitary 90dB (A). If the driver ear noise level is greater than 90dB (A), Or must take earplugs, earmuffs and other protective measures in Table 2 shorten time workers. But the maximum limit shall not exceed 115dB (A). Table

2 Noise health standards Daily noise exposure time/h limit Health/dB (A) 1.5 102 0.5 110 0.25 115 (maximum limit)

6.4.3 Vibration No-load test run on the road, the driver body vibration limit of not more than 1.15m/s2, contact work vertical, horizontal vibration strength It shall not exceed defined in Table 3. Table 3 whole-body vibration intensity limit health Contact work Time/h Health limits dB (A) m/s2 8116 0.62 4 120.8 1.1 2.5 123 1.4 1.0 127.6 2.4 0.5 131.1 3.6

6.4.4 Air Quality Job site concentration of harmful gases in the air should meet the requirements of Table 4. Table 4 harmful gas concentration limit Harmful gas components Name 8h volume weighted average concentration (10-6) CO 50 CO2 5000 NO 25 NO2 5 SO2 5 PM 160µm/m

6.4.5.1 General requirements

a) transport tub lights should be installed firmly, good and effective, is not allowed due to transport tramcar vibration and loose, damaged, lost or altered light effect direction;

b) All light switches should be installed securely, switch freely, not allowed to transport tramcar vibration due to its own switch, switch position should be easy to drive Operates the drive;

c) transport means shall tub mirrors, mounting position and angle should be moderate, the mirror image should be clear, the driver can be in operation See the case of the rear tub shipped.

6.4.5.2 transported tub lighting configuration requirements Number of external lighting and signaling devices shipped tub, position, light color and minimum geometric visibility shall be carried out with reference to the requirements of GB 4785 Configuration. Switch position all lighting devices should meet the JB/T 3683 requirements. Switch lighting and signaling devices shall be identified, logo Graphic symbols shall comply with GB/T 8593.1 and GB/T 8593.2 of.

6.4.5.3 tub before transport, the back light luminous intensity requirements Tub before the operation, the emission intensity of the back light should be consistent with JB/T 7694 requirements of.

6.4.5.4 transported tub work area lighting configuration requirements To ensure the safe operation of the underground mine car and staff in transport roadway, roadway intersections and roadway lighting loading area should have its lights Illuminance values were 2.5lx, 10lx, and 60lx above.

6.5.1 The concentration of harmful gases engine exhaust emissions shall comply with the provisions of GB 20651.1-2006.

6.5.2 the engine shall be not more than 0.05% sulfur content, flash point of not less than 55 °C of diesel, the condition does not have a temporary place, Should consult the engine manufacturer, can temporarily use the sulfur content of not more than 0.2% of the light diesel oil. Source

6.5.3 Mine dust content air required air flow and the wind roadway and mining work shall comply with the provisions of GB 16423.

6.6.1 General requirements for brakes

6.6.1.1 tub underground transport should configure the service brake, secondary brake and parking brake. If the service brake is fully enclosed multi-disc Wet brakes, the brake hydraulic circuit must be double-loop. If fully enclosed wet spring brake, the brake hydraulic circuit can be single Loop, but you must configure manual brake pump. If the parking brake may replace auxiliary brake function, it can not set up an auxiliary brake. stop Brake only by mechanical braking.

6.6.1.2 Brake performance test methods should be consistent with the provisions of JG/T 48's. Performance req...