Slack Two-For-One Twister Machine
Applied range:
Applicable to the twisting of nylon, polyester and other 20D-500D high elastic fibers.
Process characteristics:
a, ultra-compact design of feed system, the maximum extent possible to reduce the loss of elasticity of the elastic fibers in the twisting process;
b, accurate calculation of slack winding density, both to ensure the package dyeing process with minimal loss of elasticity, but also saves the cost of dyeing;
c, direct style pine cone winding, reducing the elastic fiber manufacturing processes (turn twist, steamed yarn), while reducing the loss of yarn;
d, Supporting the initiative back solution constant tension winder, yarn dyeing guarantee perfect retreat after a successful solution and winding tension is always exactly the same, greatly improve the quality of yarn;
e, Reducing processing equipment and processes into space, saving labor costs.
Features:
a, easy to operate, drive reasonable, compact structure, beautiful appearance;
b, from the style manual spindle brake system, the operation easier, while extending the life of belt and spindle;
c, full-frequency Control System and visual interface, easy adjustment and monitoring of process parameters.
Optional devices:
a, broken yarn devices: avoid twisting the yarn yarn waste and process interruptions due to mechanical wear and tear yarn;
b, tight winding device: The device is ultra loose feed at the edge, increasing tight overfeed, over silk and other devices, so that the device can be easily carried out while the same yarn twisting traditional purposes.
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The situation that causes the failure is: when the bearing is first greased, it is not added according to the process requirements; the amount of grease added is not measured, there is insufficient oil, the grease is too little, causing dry grinding and burning; the gear end oil seals the oil, resulting in The bearing end bearing grease deteriorates and burns the motor bearing; the grease is dirty and there are impurities, causing abrasive damage to the bearing.
Bearing quality. The cage is broken or the inner and outer rings are cracked; the inner ring inner hole size does not meet the requirements; the inner ring of the bearing inner ring is improperly fitted to make the inner ring slow; the roller has cracks and burrs, the raceway is peeled off; the bearing clearance is too small, the bearing Overheating, the inner ring temperature rises on the outer ring, making the gap smaller, causing the bearing to burn out; the bearing clearance is too large, the roller is unevenly stressed, and the motor vibration is large, which easily causes the bearing to burn.
When assembling the bearing inner sleeve, gas welding heating or electromagnetic heating may cause the problem of uneven heating or inaccurate heating temperature, and the heating may be too high, causing the inner sleeve to be deteriorated. Quality problems in other aspects of traction motors. The main table of the base is not parallel with the axis of the motor, and it is easy to form a single-sided magnetic pulling force, so that the bearing surface is subjected to excessive force; the size of the end cover of the base is not standard, and the outer ring of the bearing is deformed, the gap is uneven, the roller and the raceway are The bearing chamber is in uneven contact with the bearing surface; the oil seal is opposite to the bearing end surface, causing the washer and the ball to be eccentric. In addition, the bearing assembly process is not strictly enforced. Due to the lack of bearing detection devices in the Chifeng locomotive section, dynamic testing cannot be performed, resulting in poor quality of the factory bearings and the cause of bearing failure.
Other causes of active traction gear failure: poor oil flow: small gearbox space size, poor oil supply conditions, poor gear lubrication. There are debris in the grease, causing abnormal gear wear and sticking. There is a problem with the quality of the active traction gear: the gear itself has cracks or drops. The angle is wrong when assembling. Before the gear is pressed onto the traction motor shaft, the heating temperature is improper, the pressing amount is not enough, the contact surface with the shaft is too small, the anti-slow nut is not pressed, and the buckle is not buckled, causing the gear to loosen. The oil seal is pulled out and hits the main and driven gears, causing cracks and peeling of the gears, and the meshing state of the main and driven gears is poor. The flaw detection is not strict, even leaking, and burying hidden troubles.
Treatment method: request rescue, gas cutting pinion, cut off the faulty motor power. When the locomotive is running, if the idling indicator light is on, the traction motor shunting display is severely uneven, and some of the motors are obviously low. At this time, the traction force is reduced and sand is scattered. If the fault persists, it is basically determined that the pinion is slow or loose. Remedy: Cut off the faulty motor power supply.
When checking the top wheel of the engine or axle box bearing in the warehouse, if there is any abnormal friction sound in a gear box, sometimes the wheel-to-wheel transmission is not smooth. When the wheel is wiped in serious, it is determined that there is foreign matter in the gear box. Out, impact the pinion or the main and driven gears, causing the gear to peel off and drop off the block. Handling: Open the gearbox for further inspection.