Bridge crane maintenance:
Repair leak protection:
Bridge crane trolley gear due to the effects of vibration, abrasion, pressure, temperature and other factors, each combination of surface static sealing parts often appear leakage. Traditional treatment methods to be demolished reducer, replace gaskets or sealant applied, but time-consuming and difficult to ensure the sealing effect, there will be leakage in operation again. Contemporary Western Countries Multi-site management using polymer composite materials leak, the most widely used world blessed blue series. Repairing polymer materials can avoid demolition, and the material has superior adhesion, oil resistance and 350% elongation, good to overcome the effects of vibration caused by the gear, repair effect is more effective than traditional methods.
Wear Governance:
Active bridge crane wheels and carts running gear frequently, repeatedly stop and reverse parking will cause torque of each axis reducer, vibration increases, could easily lead to leakage. After such a problem occurs, more traditional methods to brush after welding or machining repair the main, but there are some drawbacks of both: the thermal stress generated by welding high temperature can not be completely eliminated, prone to bending or breaking; and a brush plated by coating thickness restrictions, easy to peel off, and the above two methods are used metal repair metal, you can not change the "hard-on-hard" with the relationship, under the combined effect of the various forces, still cause wear again. The latest maintenance methods mostly based polymer composites, and the application of more Yumi Ka Wah technology products, which has superior adhesion, excellent strength and other comprehensive performance. Application of polymer materials to repair, neither welding thermal stress on the repair thickness is not limited, while products with metallic materials do not have a concession, it can absorb the impact of vibration equipment, to avoid the possibility of re-wear and greatly extended equipment life member enterprises save a lot of downtime, creating significant economic value.
Bridge crane maintenance:
(1) Bridge cranes look: a comprehensive clean appearance, so that no dust, no yellow robe. Check for cracks, open welding.
(2) Carts, trolley: ① Check and tighten shaft seat, gearbox, coupling and shaft key is loose; ② Check and adjust the brake wheel clearance so that uniform, sensitive and reliable.
(3) Check the overhead crane reducer mainly to see whether the oil spill. Cabinets abnormal sound run, it is necessary to open the lid to check. Usually bearing damage or gear backlash is too large, severe tooth wear and other reasons.
(4) A hoist winch: ① Check the wire rope, hook, pulley is safe and reliable, and wear exceeds the specified value should be replaced. ② Check and adjust the brakes, make it safe, sensitive and reliable.
(5) Overhead crane wire rope inspection. Check broken wire rope should focus on observation, abrasion, kinks, rust, etc., for some wear, broken wires more serious but not yet exceeded a position, to do the marking, in order to focus on tracking the retest. Pay attention to check the safety rope in the roll stopper is valid, whether the wire rope reel clamping plate and plate number is appropriate.
(6) Lubrication: Check the oil all parts of the oil, as required to join or replace oil.
(7) Check for overhead crane pulley. Focus on bottom wear amount is excessive and whether there is a crack cast iron pulley. For the balance wheel pulley mechanism stoop Yang, because it does not operate normal circumstances, it is easily overlooked. So, be sure to check before installing the flexibility of its rotation, otherwise, the installation length of rope around Jan stoop and pull the balance wheel can not be automatically adjusted, so that an increase in altitude adjustment overlooking Yang rope difficulty and risk level jobs.
(8) Electrical: ① Check the limit switch is sensitive and reliable; ② check the electrical box in the electrical action is sensitive and reliable; ③ Check the motor, bells, lead is safe and reliable; ④ check signal is good.
(9) Check for loose coupling each bridge crane or even "scroll keys." Focused on checking the flexible pin coupling elastic rubber ring any abnormal wear of tooth gear couplings should pay special attention to the ring gear wear. Due to installation accuracy is poor, between the two axes at a larger offset, the performance of the entire ring will wear a short bald soon.
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