Unit brake test bench

Means a brake test bench directory, Overview 2 Second, conditions 2 III, the main structure consisting of 3 Fourth, the main technical parameters of 3 V, for use 4 six security 6 VII 6 eight cabinet maintenance, electrical cabinets procedures 7 I. Overview 1, the device is based on the overall design of the company and the maintenance process Harmony electric locomotive, structural characteristics and working conditions of the unit brake independent research and development, design of special test equipment. 2, the device name: "The unit brake test bed" model: HZL-HH-01 3, the device is applicable HXL1, HXL2, HXL3 locomotive brakes with manual and automatic control; overcurrent, overvoltage, bits and other protective measures; Simplified Chinese Windows XP user interface; powerful data acquisition and processing functions. 4, the equipment installation, commissioning completed by the supplier, the initial test completed by the supplier to guide the demand side. 5 Please read the instructions carefully before use. Second, the use 1, no more than 2000 meters above sea level. 2, the ambient temperature: 0 ℃ ~ + 40 ℃. 3, the device stops during use, ambient temperature is not lower than -10 ℃. 4, relative humidity less than 85%. 5, power line voltage fluctuation is less than ± 5%, waveform span no more than ± 10%. 6, in the absence of a conductive, flammable, explosive dust, no corrosive metal and damage the insulation of gas and vapor occasions. 7, in the absence of strong vibration and shock indoor use. Third, the main structures 1, 2 test bench cabinet housing, industrial control computer and software 3, PLC 4, 5 electrically controlled valve, sensors 6, 7 Bourdon tube pressure gauge, digital pressure gauge 8, low-voltage electrical IV The main technical parameters 1, Rated supply voltage: (AC380V AC220V); 50Hz 2, the compressed air pressure: 1Mpa Fifth, use 1, Power: closing the main power switch on the front panel power indicator light indication. 2, the key switch is turned to open, start IPC, display Windows XP interface. 3. Double-click the desktop icon QYB, configuration project started, showing man-machine communication interface; 4, manual test: the upper panel (manual / automatic) selection switch to manual. 5, the back of the brake cylinder test bed spring cylinder intake and intake pipe are respectively connected to the brake cylinder and the spring cylinder. 6. The testing requirements are pressing the appropriate button until the meet the requirements of release the button. 7, when the brake cylinder holding pressure test, when the pressure to holding pressure value, the timer switch is turned to the open position starts. 8, automatic test: the operating mode switch is turned to the automatic position: as required in the display screen, click on the appropriate button. 9, specific test reference cell brake testing standards. The following items are for reference 1, the sensitivity of the test brake cylinder pressure air into 50KPa consecutive three tests, good action. 2, the brake shoe clearance adjustment 2.1 - Tests to determine the stability of the brake shoe clearance gap with manual brake shoe tread transferred to 25-28 mm, brake five times - to ease the test, when found in space does not change, then ten times system move - to ease the settling values ??Shoe and tread gap identified gap for brake shoe braking device unit is a, stable brake shoe clearance should be between 6mm≤a≤12mm range. A one-time adjustment 2.2 Test remission at room temperature, the brake head position adjusted to the minimum, with the adjustment nut position ahead of its launch from a minimum of about 40mm, write down the brake head a fixed point to a fixed point of the brake unit position Ha, then conduct a brake - ease test, in a note to the brake Salvatore same fixed point fixed point distance H, the value of H-Ha's is a brake adjustment, continuous five tests, take five times the average as an adjustment amount, an adjustment amount ≥6mm qualified. 2.3 Total adjustment test at room temperature normal remission, the brake head position is adjusted to a minimum, select a reference point on the brake, measure the distance to the center of the arc gate bracket L, the brake cylinder repeatedly inflated, exhaust When not increase the amount of brake head launched in remission, the measurement reference point to the center of the arc from the brake head La, L and La adjustment is the difference between the total amount, the total adjustment amount L-La≥ 110mm 2.4 manually adjust the gap test at normal temperature, with a wrench positive and negative two directions of rotation adjusting nut, brake head should be two-way adjustment, and flexible action. 3 braking force when the brake cylinder test 3.1 Test brake shoe and the braking force tread in the normal gap, the brake cylinder filled with compressed air 350KPa, the measured output power brake shoe should ≥34.2KN ± 5%, the brake cylinder charge When the 450KPa air, measure the output power of the brake shoe should ≥44KN ± 5%. 3.2 means spring parking brake force to the parking brake test 600KPa compressed air cylinders filled, then emptied, the implementation of the parking brake, the measured braking force spring, spring brake force should ≥31.5KN ± 5% 4 spring stopping device performance test 4.1 spring parking brake, ease test at room temperature condition, the spring parking brake cylinder filled 550-600KPa compressed air is then discharged compressed air brake brake shoe should be, in the spring parking brake cylinder filled with compressed 500KPa air brake shoe should be alleviated, the test was repeated five times, at normal temperature, brake and mitigation should be normal. 4.2 Minimum spring parking ease pressure test to the spring parking brake cylinder filled 550-600KPa compressed air, compressed air is then discharged, the brakes, and then in the spring park filled with compressed air, pressure is gradually increased from 300KPa, Parking can complete remission until the spring, when the pressure is minimized to ease pressure Pmin, Pmin≤460KPa qualified. 4.3 spring parking manually relieve test at room temperature condition, the spring parking filled into 550-600KPa compressed air, compressed air and then emptied, the brakes, pull the manual mitigation devices brake unit should be able to completely alleviate repeated five trials, each should be able to complete remission. 5 5.1 low pressure air tightness test seal test at room temperature condition, respectively, to the spring brake cylinder or a spring stop cylinder filled with compressed air 100KPa, packing three minutes, disclosure is not greater than 2KPa. 5.2 high-pressure leak test Under normal conditions, respectively, to the brake cylinder filled 430-465KPa compressed air, spring parking 600-650KPa compressed air cylinder filling, packing three minutes, disclosure is not more than 2KPa .. 10, MCGS software features: Start screen, sensitivity, test interface gap adjustment, adjusting the amount of test interface, air tightness testing, data browsing, test reports, helping more than 10 windows interface for recording, query, print a variety of test data and results, according to the Window menu prompts; can not collect the data window with a keyboard input; where history reports can be used as the test results automatically generates standard Excel report to the IPC hard disk storage, the report can be copied, uploaded to the server and the host machine. 11, Off: Turn off IPC test is completed and the printer, disconnect the power switch and compressed air valves. Six security 1, the test station long-term disabled should disconnect input power to ensure the safety of personnel and equipment. 2, control settings interlock protection against operator error or equipment malfunction. Ensure safe and reliable operation. 3, with ground fault protection, short circuit, and overload protection to ensure safe use of electricity. 4, the console protection class IP54, sensing element and the sensor protection not less than IP64. 5, the electrical components are selected well-known brand products, reliable quality. Imported electrical components, parts by CE certification; domestic electrical components meet the national standard GB / T14048.1, GB / T14048.3, GB / T14048 seven cabinet maintenance according to customer usage, the use of frequent maintenance once every three months. Each time maintenance work June 1) repair and maintenance projects 1. Check button switch for damage. 2. Check the plug is damaged instruments, sensor cable is damaged. 3. Check the power cabinet wiring is tightened, if the cable is damaged, the insulation is aging. 2) repair and maintenance 1, after equipment failure in electrical professionals should identify the reasons for the exclusion of failure to boot test again or contact me. 2, the device should not be long-term switch off all power; good waterproof, moisture-proof, anti-lightning, anti-corrosion, anti-dust measures. Eight cabinet rules 1, the training of qualified and holds the operating permit who are allowed to operate. The operator must strictly observe the safety, shift and other systems. 2, before the work should be strictly in accordance with procedures to operate. 3, check the instrumentation and power indicator is normal. As usual the next step operation. 4, in strict accordance with the sequence of operation instructions. 5. After the test is complete, disconnect the power switch and compressed air valves. Must check, clean equipment and do routine maintenance work, safe, orderly, and clean. Nine, the main operator interface display