MT/T 589-1996 Explosion-proof diesel engine steel wheel/rack locomotive and rack device for coal mines
Some standard content:
MT/T 589—1996
The basic principles, requirements, methods and expressions of this standard are written in accordance with the national standard GB/T1.1-1993 Unit 1, Rules for Drafting and Presentation of Standards, Part 1: Basic Provisions for Standard Writing. The relevant technical parameters in this standard, such as power, traction, speed, wheel diameter, wheelbase, and overall dimensions, are determined by each manufacturer according to the power size.
This standard is proposed by the Science and Technology Education Department of the Ministry of Coal Industry. This standard is under the jurisdiction of the Coal Mine Special Equipment Standardization Technical Committee. This standard is drafted by the Hunan Coal Science Research Institute. The main drafter of this standard: Wu Kewei.
This standard is entrusted to the Auxiliary Transportation Equipment Branch of the Coal Mine Special Equipment Standardization Technical Committee for interpretation. 55
1 Scope
Coal Industry Standard of the People's Republic of China
Explosion-proof diesel engine steel wheel/
Rack rail locomotive and rack rail device for coal mines
MT/T 589—1996
This standard specifies the type, basic parameters, technical requirements, test methods, inspection rules, marking, shipment and storage of explosion-proof diesel engine rack rail locomotive and rack rail device (hereinafter referred to as locomotive) for coal mines. This standard is applicable to locomotives used for transportation and traction in underground coal mines with gas and coal dust explosion hazards. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. At the time of publication of the standard, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB1184--80 Specifications for shape and position tolerances without tolerances GB1336-77 Inspection procedures for manufacturing explosion-proof electrical equipment GB/T1804-92 General tolerances without tolerances for linear dimensions GB3836-83 Explosion-proof electrical equipment for explosive atmospheres JB2785-79 Models and basic parameters of diesel locomotives JB3247-83 General technical requirements for diesel locomotives MT113-1995 General test methods and judgment rules for flame retardancy and antistatic properties of polymer products used in coal mines "Safety Regulations for Coal Mines" 1992 In 1985, the Ministry of Energy of the People's Republic of China formulated the "Technical Inspection Specifications for Explosion-proof Diesel Locomotives for Coal Mines" (Trial Implementation). In 1985, the Technical Development Department of the Ministry of Coal Industry of the People's Republic of China formulated 3 Product Classification
3.1 Product Model
Model Compilation Instructions:
——(Modified Serial Number)
(Supplementary Characteristic Code)
(Power/Track System)
(Steel Wheel/Rack Rail)
Diesel Engine
a) The product model is the first Chinese pinyin letter of the locomotive name. b) Example;
The model of a 90 horsepower, 900mm track gauge explosion-proof diesel engine steel wheel/rack rail locomotive for coal mines is CCG/C90/900kB. Approved by the Ministry of Coal Industry of the People's Republic of China on December 3, 199656
Implementation on October 1, 1997
3.2 Basic parameters
MT/T589--1996
The main technical performance items of locomotives are shown in Table 1. The main technical parameter indicators are determined by the manufacturer and should be included in the product manual. Table 1
Diesel engine power, kw
Machine weight, t
Maximum rack traction, kN
Maximum adhesion traction, kN
Maximum rack running speed, km/h
Maximum adhesion running speed, km/h
Rack, (\)
Maximum climbing ability:
Adhesion, (°)
Minimum horizontal turning radius, m
Minimum vertical turning radius, m
Wheelbase, mm
Track gauge, mm
Outer opening dimensions (length × width × height), mm
Fuel tank container, L (≤8h working oil volume) Main pump model
Hydraulic motor model
Main circuit pressure
Maximum braking force:
Rack brake, kN
Adhesion brake, kN
4 Technical requirements
4.1 Environmental conditions for use
Main technical parameters
4.1.1 Locomotives that meet this standard are allowed to be used in mines with gas and coal dust explosion hazards, including mines with coal (rock) and gas outbursts.
4.1.2 The locomotive should be able to be used under ambient temperature conditions of -40℃ to +40℃. 4.2 General Technical Requirements
4.2.1 The locomotive shall comply with the requirements of this standard and be manufactured in accordance with the drawings and technical documents approved by the prescribed procedures. 4.2.2 The purchased parts and supporting products used in the locomotive shall comply with the provisions of the relevant technical standards and must be accompanied by the manufacturer's product certificate. All explosion-proof products shall also be accompanied by explosion-proof certificates issued by the national designated inspection unit. 4.2.3 The materials, standard parts and general parts used in the locomotive and the requirements for process properties such as forging, casting and welding shall comply with the provisions of the relevant standards.
4.2.4 Sharp edges and corners that are easily touched by the human body and hands shall be blunted. 4.2.5 All kinds of oil, water pipelines and various boxes of the locomotive shall be tight and there shall be no oil or water leakage. The leakage of the compressed air pipeline shall meet the equipment requirements.
4.2.6 The locomotive shall be equipped with more than one portable fire extinguisher, which can be easily taken out from both sides of the vehicle for use, and a tool box shall be provided. 4.2.7 The maximum noise of the locomotive should be less than 90dB(A). 57
MT/T 589—1996
4.2.8 The connection device between the locomotive and the vehicle must be made of low-carbon high-quality steel, and its minimum breaking strength is: a) 13 times the maximum traction force for transporting personnel; b) 10 times the maximum traction force of the locomotive for transporting materials, or 2.5 times the weight of the locomotive, whichever is greater. 4.2.9 The locomotive should be equipped with a sand spreading device, and the amount of sand removed from each box should be uniform. 4.2.10 The front of the locomotive must be equipped with a lighting lamp, and it should be ensured that there is 2Lx illumination at 60m in front of the locomotive. The rear of the locomotive must be equipped with a red light, and the visibility distance must be ≥60m.
4.2.11 The sound of the locomotive horn can be heard clearly at least at the corresponding lighting distance of the locomotive. 4.2.12 The locomotive should undergo durability test. 4.3 Locomotive performance requirements
4.3.1 Car body:
4.3.1.1 The minimum absorption capacity of the locomotive buffer should be able to withstand the collision of the locomotive with an unbuffered high inertia static barrier at a speed of 3.6km/h to ensure that it is not damaged.
4.3.1.2 The frame welds should be flat and uniform, and there should be no defects such as cracks, pores, ash and incomplete welding. 4.3.1.3 The shape and position tolerances of the two side plates and two end plates of the frame should meet the design requirements, and the frame diagonal tolerance is 5:1000. 4.3.2 Driver's cab:
4.3.2.1 The driver's cab door should be equipped with a protective chain (rod), and the front window of the driver's cab should have a wide field of view, so that the driver can clearly see the signals and lines ahead. 4.3.2.2 The layout of the driver's cab should make the driver's operation convenient, flexible, reliable, safe and comfortable, meet the requirements and habits of the human body, and can work with a helmet.
4.3.2.3 Both the main and auxiliary driver's cabs of the locomotive can control and operate the locomotive forward, backward and stop. When one driver's cab and the control and operating device are operating, the other driver's cab and the control and operating device should be invalid, but both driver's cabs can operate the safety brake device at the same time. 4.3.2.4 The driver's cab should be equipped with a gas alarm [a gas automatic detection alarm and oil cut-off (power) device should be installed in a mine with coal (rock) and gas outburst dangers], exhaust temperature gauge, cooling water temperature gauge, lubricating oil pressure gauge, hydraulic oil pressure gauge, compressed air pressure gauge, speedometer and other indicating instruments. 4.3.3 Hydraulic system
4.3.3.1 The oil temperature of the oil tank shall not exceed 70℃. 4.3.3.2 The pressure oil of the system must be the specified hydraulic oil and cannot be selected arbitrarily. 4.3.3.3 The oil level positioning of the hydraulic system oil tank should prevent possible accidental leakage of liquid or any other external substances from entering the hydraulic system, and an oil level display device should be provided.
4.3.4 Transmission system:
4.3.4.1 The transmission of the main reduction gearbox and the travel gearbox should be smooth, and no abnormal sound is allowed. 4.3.4.2 The main reduction gearbox and the travel gearbox should be tested for engagement, transmission, torque, transmission efficiency, noise, etc. 4.3.4.3 The transmission system and cylindrical gear accuracy should comply with the relevant provisions of GB10095. 4.3.5 Travel device:
4.3.5.1 The clutch should be engaged and disengaged smoothly, no abnormal vibration is allowed, and the transmitted torque should ensure the maximum adhesion drive traction requirements. 4.3.6 Braking system:
4.3.6.1 The locomotive must be equipped with a working brake, an emergency brake and a parking brake. The working brake and the emergency brake must have independent control systems.
4.3.6.2 The temperature rise and sparks caused by the brake device during braking shall not ignite the explosive gas mixture. 4.3.6.3 Under rated load and rated operating speed, the braking distance of the working brake device shall comply with the following provisions: a) When operating with adhesion drive on a flat track, the distance for transporting goods shall be ≤40m; the distance for transporting people shall be ≤20m. b) When operating with rack rail drive on a ramp, the braking distance shall be ≤1.5m. 4.3.6.4 Automatic speed limiting devices shall be installed on both the ramp operation and the locomotive. When the operating speed exceeds the maximum operating speed by 15%, the emergency brake device can automatically function.
4.3.6.5 The emergency brake device shall be designed to be fail-safe. When the system pressure disappears, the system shall be in the braking state. 58
MT/T 589--1996
4.3.6.6 The braking force of the emergency brake and parking brake shall be at least 1.5~~2 times the rated traction force. 4.3.6.7 The idle time of the brake device when it is in action shall not exceed 0.7s. 4.3.6.8 When running downward at the maximum design speed on the maximum load and maximum slope, the braking distance shall not exceed the equivalent of 6s travel at this speed; when running upward at the minimum load and maximum slope, the braking deceleration shall not exceed 5m/s2. 4.3.6.9 Except for the implementation of safety braking on the slope, the braking device is not allowed to lock when braking. 4.3.7 Compressed air system:
4.3.7.1 The exhaust volume of the air compressor shall meet the design requirements, and the opening and closing pressure values of the air pressure regulator shall comply with the drawing requirements.
4.3.7.2 The exhaust temperature of the air compressor shall not exceed 150℃, and there shall be an over-temperature protection device. 4.3.8 Electrical system:
4.3.8.1 The electrical equipment used on the locomotive must be flameproof or intrinsically safe and comply with the provisions of GB3836. 4.3.8.2 Cables or wires connected to flameproof electrical equipment shall be made of oil-resistant and flame-retardant materials that meet national standards and shall have reliable protection to prevent damage. All wire protection tubes must be fixed by appropriate methods. 4.3.8.3 The insulation level of all wires and cables shall be consistent with the working voltage. 4.3.8.4 The charging equipment shall be able to charge the battery normally within the entire operating speed range of the diesel engine, and the locomotive shall be equipped with a charging protection device. 4.3.8.5 The battery shall ensure that the emergency oil cut-off solenoid valve operates under the specified discharge state and reaches the specified number of times. Anti-corrosion, sewage discharge and ventilation measures shall be taken at the battery installation site.
4.3.8.6 A diesel engine safety monitoring device shall be installed in the driver's cab. When the surface temperature, exhaust temperature and oil pressure of the diesel engine exceed the specified safety value, the monitoring device can promptly alarm and automatically shut down the engine. 4.4 Locomotive assembly
4.4.1 Assembly can only be carried out after all parts (including purchased parts and outsourced parts) have been inspected and qualified. 4.4.2 The joints of all levers in the brake device should be flexible and reliable without any jamming. 4.4.3 All operating control devices should be adjusted to be flexible and reliable without any jamming. 4.4.4 After the locomotive is assembled, all oil, water and steam pipelines and joints must not leak. 4.4.5 The gap between the most protruding part of the locomotive and the roadway and between the most protruding parts of the oncoming trains must comply with the relevant provisions of the "Coal Mine Safety Regulations".
4.4.6 The distance between the lowest point of the frame and the rail surface shall not be less than 105±5mm. 4.4.7 The ends and lengths of pipelines shall be firmly supported by pipe clamps, and the spacing between pipe clamps shall comply with the provisions of Table 2: Table 2
Tube radius, mm
≥10～25
≥25～50
Distance between pipe clamps, mm
≤1500
4.4.8 Each fastening bolt shall not be loose or tilted, the cotter pin shall be firmly installed, and the nut bolt and the assembly surface shall be in close contact. 4.4.9 Oil, water and gas pipelines shall be painted. Except for copper pipes, the entire pipe shall be fully painted, and the paint shall not fall off and the color shall not change at a temperature of 120℃.
4.5 Technical requirements for rack rail device
4.5.1 In order to ensure the normal and smooth transition between the locomotive adhesion operation and rack rail operation, a rack rail introduction device must be installed. 4.5.2 The locomotive shall not have any jamming, collision or interference in any state (including when passing through ramps, curves, switches and rack guide devices) when running without load, running with heavy load, working brake, emergency brake or parking brake. 4.5.3 Rack rails, rack drive wheels, etc. must meet the design requirements. 4.6 Basic performance requirements for the whole machine
MT/T 589--1996
4.6.1 The locomotive shall be able to pass through the minimum horizontal curve radius and the minimum vertical curve radius required by the design. 4.6.2 The locomotive shall reach the maximum design traction speed for adhesion drive operation on a horizontal straight road. The maximum design traction speed for rack wheel drive operation on a rack rail.
4.6.3 The locomotive shall be equipped with an automatic parking device. When the following conditions occur, the protection device will function and the engine will stop: a) The lubricating oil pressure is lower than the minimum pressure;
b) The exhaust temperature exceeds the maximum permissible temperature; c) When the engine speed exceeds the maximum permissible speed; d) When the engine cooling water temperature exceeds the specified temperature; e) The gas concentration exceeds the maximum permissible concentration
4.6.4 Braking requirements:
The braking force of the locomotive on the horizontal non-toothed section and the braking force on the ramp rack section shall meet the design requirements. 4.6.5 No-load operation requirements:
When the locomotive passes through the test ramp, curved turnout and rack guide device, there shall be no interference between the various parts. 4.6.6 Maximum traction:
The maximum traction of the locomotive when it is driven by adhesion and rack wheels shall not be less than the design value. 4.6.7 Explosion-proof and purification performance:
a) The exhaust gas outlet temperature shall not be greater than 70℃; b) The diesel engine intake and exhaust explosion-proof system (including fence) shall not cause explosion after explosion-proof inspection; c) Within the rated output power range of the diesel engine, the carbon oxide (CO) in the undiluted engine exhaust shall be less than 1000ppm and the nitrogen oxide (NOx) shall be less than 800ppm.
5 Test method
5.1 No-load commissioning and running test
5.1.1 The locomotive is erected with sleepers, the wheels are suspended, the mechanical parts and universal joints are connected, the diesel engine is started, the locomotive is run for 2 hours, and the working condition, temperature rise, noise and movement of the driving mechanism are observed to see whether they meet the design requirements. 5.1.2 After the locomotive is started, it is first debugged on the flat track. After confirming that the control system, control system clutch, brake system, etc. are working properly, it is run on the flat track for 2 hours to check whether there is interference when each part passes through the horizontal curve, turnout, and rack rail, whether the indication of each instrument is normal, and whether the start, stop, and brake are normal.
The locomotive should pass the horizontal curve and rack rail section at a low speed. During the running test, attention should be paid to timely replenishment of fuel and cooling water, and attention should be paid to anti-freezing in winter.
5.1.3 Locomotive control system test:
The handle should be operated in the main and deputy driver's cabs for no less than 10 times respectively. The handle operation should be sensitive, accurate, and reliable in positioning. 5.1.4 When the locomotive brake shoe is released, the single-side clearance should meet the design requirements. 5.1.5 The time from start to full speed in the locomotive acceleration performance test is ≤10s. 5.1.6 Locomotive braking performance, the braking distance of a single machine at full speed is ≤10m. 5.1.7 After the locomotive enters the normal operation stage, when the driver is relatively skilled in operation, the locomotive is operated on the test field for 6 hours in accordance with the principle of slow speed first and then fast speed, to check whether there is interference between the various parts when passing through the ramp, the operation of the locomotive in the rack section, and to assess the parking, braking and starting performance of the locomotive on the ramp. The locomotive should pass the horizontal curve and the rack section at a low speed. 5.2 Load test
5.2.1 The locomotive is loaded and runs continuously on a straight track for 8 hours to check whether the diesel engine, control system, hydraulic system, running mechanism, etc. are working properly.
5.2.2 The locomotive is loaded and a continuous rack running test is performed on the maximum design ramp for 8 hours to observe whether each system is working properly. 5.3 Braking force test
MT/T 589--1996
5.3.1 The locomotive is in a horizontal non-tooth section: close the hydraulic clutch and use the test device to test the adhesion braking force, and the test is repeated 3 times. 5.3.2 When the locomotive is in the rack section: the hydraulic clutch is released and the rack wheel drive braking force is tested 3 times in succession. 5.4 Braking distance test
5.4.1 The locomotive runs with the rated load and rated speed and its braking distance is tested 3 times. 5.4.2 The locomotive runs on a slope of 8° with the rated load and rated speed of the rack, and its braking distance when going up and down the slope is tested 3 times each.
5.5 Traction test
5.5.1 Measure the adhesion drive traction of the locomotive, and operate it 3 times in the main and deputy driver's cabs respectively. 5.5.2 Measure the gear drive traction of the locomotive, and operate it 3 times in the main and deputy driver's cabs respectively. 5.6 Traction speed test
5.6.1 Measure the adhesion running speed of the locomotive on a horizontal straight road, and operate it 3 times in the main and deputy driver's cabs respectively. 5.6.2 The measuring locomotive is driven by rack wheels on the rack rails, and the main and assistant cabs operate 3 times each. 5.7 Braking idle travel time
5.7.1 When the locomotive is driven by adhesion, the braking idle travel time is measured, and the main and assistant cabs operate 3 times each. 5.7.2 When the locomotive is driven by rack rails, the braking idle travel time is measured, and the main and assistant cabs operate 3 times each. 5.8 Noise test
5.8.1 The measuring instrument adopts a precision sound level meter with A sound level weighting. 5.8.2 There shall be no large reflective objects within a radius of 10m from the locomotive outdoors. 5.8.3 Background noise: The background sound pressure level should be lower than the sound pressure level of the locomotive under test by more than 10dB(A). 5.8.4 Test conditions: The locomotive is parked and not running on a dry, level straight road, and the diesel engine is running at rated speed and rated output. 5.8.5 Test position, main and assistant cabs, driver's head position. 5.9 Electrical safety protection test
The test shall be carried out in accordance with the Technical Test Specifications for Explosion-proof Diesel Engines for Coal Mines. 5.10 Explosion-proof and purification performance test
The explosion-proof testing center designated by the ministry shall conduct the test in accordance with the requirements of (85 "Technical Inspection Specifications for Explosion-proof Diesel Locomotives for Mining" Trial Implementation]. 5.11 Inspection of general technical requirements
Same as conventional inspection methods
5.12 Appearance quality requirements
Inspection by visual inspection
Inspection rules
6.1 Locomotive inspection is divided into factory inspection and type inspection. Two inspection items should be carried out according to the provisions of Table 3. Table 3
Basic requirements
Appearance quality
No-load operation
Load operation
Temperature rise test
Inspection items
Technical requirements
4.3.7.2, 4.6.7
Inspection method
Inspection according to the drawings and technical documents
Test category
Traction
Traction speed
Working brake
Parking brake
Emergency braking force
Test items
Emergency brake idle time
Automatic speed limiter
Braking distance
Emergency brake
Working brake
Braking deceleration
Passing performance
Climbing performance
Inlet and outlet rack and rack
Diesel engine explosion-proof purification performance
Explosion-proof performance of electrical components and systems
Signal and communication
Waterproof and other safety facilities and automatic monitoring devices Noise
Strength of connecting rods and other connecting parts
Durability test
Note: The ones with √ mark indicate that this test should be carried out. 6.2 Factory inspection:bzxZ.net
MT/T 589-1996
Table 3 (end)
Technical requirements
See references
See references
4.2.10,
4.3.2.4,4.2. 6
Inspection method
5.3, 5.4
5.3, 5.4
Inspection category
6.2.1 The explosion-proof inspection requirements for each product shall comply with the provisions of Section 3.13.3 of the "Technical Inspection Specifications for Explosion-proof Diesel Locomotives for Coal Mines" (Trial).
6.2.2 Each locomotive must be inspected according to the inspection items in Table 3. If any of the inspection items fails, it is allowed to repeat the test and inspection after adjustment and overhaul. If it still fails, the batch of products will be judged as unqualified. After the locomotive passes the quality inspection of the manufacturer, it shall be accompanied by a product certificate and an explosion-proof certificate, and a permit for use in the mine before it is allowed to leave the factory. 6.2.3 The diesel engine shall be inspected according to the inspection standards and factory status specified in the instruction manual. 62
6.3 Type inspection:
MT/T 589-1996
6.3.1 Type inspection shall be conducted in any of the following cases: a) when new or old products are transferred to another factory for production; b) when changes in product design process or materials affect product performance; c) when products that have been out of production for more than 3 years are produced again; d) in normal production, once every 5 years; e) when the national quality supervision agency proposes a type inspection requirement. 6.3.2 In addition to the above-mentioned factory performance test, the type test of the locomotive shall also be subject to durability test: the main components shall be tested for continuous operation for 500 hours under full load without failure,
6.3.3 The sampling of type test samples shall be conducted in accordance with the following conditions: a) Samples shall be drawn from products that have passed the factory test, and one unit shall be sampled; b) If there are unqualified items in the type test, it is allowed to repeat the test and inspection after adjustment and overhaul. If it still fails, the batch of products shall be judged to have failed the type inspection.
6.4 Explosion-proof inspection:
After the locomotive completes the factory test, it shall be subjected to explosion-proof inspection by the explosion-proof inspection center designated by the superior competent department, and the product can only be issued to the user after obtaining the permit to go down the mine.
6.5 The factory locomotive shall have a product certificate issued by the quality inspection department, and shall be accompanied by the following random documents and spare parts: a) Instructions for use and maintenance and certificates, explosion-proof certificate; b) General drawing, wearing parts drawing, packing list,
c) Wearing parts, spare parts, accessories and random tools. 7 Marking, shipment, storage
7.1 Each locomotive shall be equipped with a product sign on the front wall of the driver's cab, and its contents shall include: a) Locomotive model, name, main technical parameters, explosion-proof certificate number; b) Manufacturing number;
c) Manufacturing year and month;
d) Manufacturer's name;
e) Coal mine safety sign.
7.2 The locomotive shall comply with the following regulations when it is shipped: 7.2.1 The exposed machined surface shall be coated with anti-rust oil and wrapped with oil paper (or oil cloth). 7.2.2 All air and water discharge valves shall be in the open position, and all water shall be drained out. 7.2.3 All operating handles or switches shall be placed in the non-working position. 7.2.4 The locomotive shall be stored in a well-ventilated, dry place without corrosive gases, and attention shall be paid to rust prevention.3.2.4、4.2.6
Inspection method
5.3、5.4
5.3、5.4
Inspection category
6.2.1 The explosion-proof inspection requirements for each product shall comply with the provisions of Section 3.13.3 of the Technical Inspection Specifications for Explosion-proof Diesel Locomotives for Coal Mines (Trial).
6.2.2 Each locomotive shall be inspected according to the inspection items in Table 3. If any of the inspection items fails, it is allowed to repeat the test and inspection after adjustment and overhaul. If it still fails, the batch of products shall be judged as unqualified. After the locomotive passes the quality inspection of the manufacturer, it shall be accompanied by a product certificate and an explosion-proof certificate, and a permit for use in the mine before it can be shipped out of the factory. 6.2.3 The diesel engine shall be inspected according to the inspection standards and factory status specified in the instruction manual. 62
6.3 Type inspection:
MT/T 589-1996
6.3.1 Type inspection shall be carried out in any of the following circumstances: a) when new products or old products are transferred to other factories for production; b) when changes in product design process or materials used affect product performance; c) when products that have been discontinued for more than 3 years are produced again; d) in normal production, once every 5 years; e) when the national quality supervision agency proposes a type inspection requirement. 6.3.2 In addition to the above factory performance tests, the locomotive type test shall also be subject to durability tests: the main components shall be tested for continuous operation for 500 hours without failure under full load.
6.3.3 The sampling of type test samples shall be carried out as follows: a) The samples shall be drawn from the products that have passed the factory test, and one unit shall be sampled; b) If there are unqualified items in the type test, it is allowed to repeat the test and inspection after adjustment and overhaul. If it still fails, the batch of products shall be judged to have failed the type inspection.
6.4 Explosion-proof inspection:
After the locomotive completes the factory test, it shall be subjected to explosion-proof inspection by the explosion-proof inspection center designated by the superior competent department, and the product can only be issued to the user after obtaining the downhole permit.
6.5 The locomotives leaving the factory shall have a product certificate issued by the quality inspection department, and shall be accompanied by the following random documents and spare parts: a) Instructions for use and maintenance and certificates, explosion-proof certificate; b) General drawing, wearing parts drawing, packing list,
c) Wearing parts, spare parts, accessories and random tools. 7 Marking, shipment, storage
7.1 Each locomotive shall be equipped with a product sign on the front wall of the driver's cab, which shall include: a) locomotive model, name, main technical parameters, explosion-proof certificate number; b) manufacturing number;
c) manufacturing year and month;
d) manufacturer name;
e) coal mine safety sign.
7.2 The locomotive shall comply with the following regulations when shipped: 7.2.1 The exposed processing surface shall be coated with anti-rust oil and wrapped with oil paper (or oil cloth). 7.2.2 All air and water discharge valves should be in the open position, and all water should be drained out. 7.2.3 All operating handles or switches should be placed in the non-working position. 7.2.4 The locomotive should be stored in a well-ventilated, dry place without corrosive gases, and attention should be paid to rust prevention.3.2.4、4.2.6
Inspection method
5.3、5.4
5.3、5.4
Inspection category
6.2.1 The explosion-proof inspection requirements for each product shall comply with the provisions of Section 3.13.3 of the Technical Inspection Specifications for Explosion-proof Diesel Locomotives for Coal Mines (Trial).
6.2.2 Each locomotive shall be inspected according to the inspection items in Table 3. If any of the inspection items fails, it is allowed to repeat the test and inspection after adjustment and overhaul. If it still fails, the batch of products shall be judged as unqualified. After the locomotive passes the quality inspection of the manufacturer, it shall be accompanied by a product certificate and an explosion-proof certificate, and a permit for use in the mine before it can be shipped out of the factory. 6.2.3 The diesel engine shall be inspected according to the inspection standards and factory status specified in the instruction manual. 62
6.3 Type inspection:
MT/T 589-1996
6.3.1 Type inspection shall be carried out in any of the following circumstances: a) when new products or old products are transferred to other factories for production; b) when changes in product design process or materials used affect product performance; c) when products that have been discontinued for more than 3 years are produced again; d) in normal production, once every 5 years; e) when the national quality supervision agency proposes a type inspection requirement. 6.3.2 In addition to the above factory performance tests, the locomotive type test shall also be subject to durability tests: the main components shall be tested for continuous operation for 500 hours without failure under full load.
6.3.3 The sampling of type test samples shall be carried out as follows: a) The samples shall be drawn from the products that have passed the factory test, and one unit shall be sampled; b) If there are unqualified items in the type test, it is allowed to repeat the test and inspection after adjustment and overhaul. If it still fails, the batch of products shall be judged to have failed the type inspection.
6.4 Explosion-proof inspection:
After the locomotive completes the factory test, it shall be subjected to explosion-proof inspection by the explosion-proof inspection center designated by the superior competent department, and the product can only be issued to the user after obtaining the downhole permit.
6.5 The locomotives leaving the factory shall have a product certificate issued by the quality inspection department, and shall be accompanied by the following random documents and spare parts: a) Instructions for use and maintenance and certificates, explosion-proof certificate; b) General drawing, wearing parts drawing, packing list,
c) Wearing parts, spare parts, accessories and random tools. 7 Marking, shipment, storage
7.1 Each locomotive shall be equipped with a product sign on the front wall of the driver's cab, which shall include: a) locomotive model, name, main technical parameters, explosion-proof certificate number; b) manufacturing number;
c) manufacturing year and month;
d) manufacturer name;
e) coal mine safety sign.
7.2 The locomotive shall comply with the following regulations when shipped: 7.2.1 The exposed processing surface shall be coated with anti-rust oil and wrapped with oil paper (or oil cloth). 7.2.2 All air and water discharge valves should be in the open position, and all water should be drained out. 7.2.3 All operating handles or switches should be placed in the non-working position. 7.2.4 The locomotive should be stored in a well-ventilated, dry place without corrosive gases, and attention should be paid to rust prevention.
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