Dịch vụ - Lắp dựng,tháo hạ,sửa chữa cẩu tháp,vận thăng chuyên nghiệp

Dịch vụ - Lắp dựng,tháo hạ,sửa chữa cẩu tháp,vận thăng chuyên nghiệp
ain troubleshooting- Sự cố chính của cẩu tháp

Stt	Problems	Reasons	Solution
1	Because of gliding of brakes,hook gliding and derricking trolley gliding out after being braked-Cơ cấu xe con và cáp tải bị trược khi đã thắng	Brake moment is too small Brakes surface is oiled and brake time is too long Thắng bị mòn nhiều,bề mặt thắng có dầu,thời gian sử dụng quá lâu	Adjust spring pressure of brake Clean oil and adjust brake shoe gap Điều chỉnh lực nén của lo xo ,lau dầu,điều chỉnh khe hở của má thắng
2	The shock of brakes load is too big. Sự chấn động của thắng tải quá lớn	Brake too quickly Gap of brakes shoes is asymmetric Thắng quá nhanh Khe hở giữa 2 má phanh không đối xứng	Adjust the gap of brake shoes or increase stroke of hydraulic pushed Điều chỉnh khe hở má phanh hoặc tăng hành trình đẩy của bơm thắng
3	Heat and smoke in the swing process of brake Nóng và bốc khói trong quá trình xoay của thắng	Gap of brake shoes is too small Khe hở má phanh quá nhỏ	Increase gap of brake shoes Tăng khe hở của má phanh
4	Temperature of retarder is too high Nhiệt độ cụm thắng quá cao	Lubricant is too little or too much Dầu bôi trơn quá ít hoặc quá nhiều	Pay attention to increasing or decreasing oil. Chú ý cho thêm hoặc giảm dầu bôi trơn
5	Temperature of retarder bearing is too high. Nhiệt độ bạc đạn của cụm thắng quá cao	Mainly grease is too little or too much. Mỡ bò quá ít hoặc quá nhiều Quality of grease is low. Chất lượng mỡ bò thấp Axial gap of bearing can't satisfy requirements or bearing is broken. K/c trục của bạc đạn không đáp ứng an toàn hoặc bạc đạn bể	Replace grease according to rules and adjust gap of bearing or replace bearing. Thay mỡ đúng chất lượng,điều chỉnh k/c trục của bạc đạn hoặc thay thế bạc đạn
6	Retarder leaks oil. Dầu thắng bì rò rỉ	Seal of connection and seal of axial- end are damaged Phớt chắn mặt bích và phớt chắn cuối của trục bị hư hỏng .	Replace sealed Thay thế phớt chắn
7	swing mechanism doesn't work Cơ cấu quay không hoạt động	Be sure that no foreign material in engaging point oil of hydraulic coupling mechanism is too little	Clean foreign material thing and increase oil
8	Ram of swing mechanism is too big	There is too much oil in hydraulic coupling mechanism	Decrease oil properly
9	Listing is too slow	a.Pump is abrasive and efficiency goe down b.Oil is too litle or oil filter is blocked c.Manually directior valve and valve opening are damaged seriously d.The seal of cylinder piston rod is damaged and leaks inner	Repair or replace damaged parts,increase oil or clean filter
10	No power for lifting or can't lifting	a.pump leaks inner seriously b.Adjusted pressure of relief valve is too low c.Valve core of manual directior valve is excessivel abrasive. d.relief valve is dipped	Repair or replace abrasive parts,adjust pressure according to 2.3.4.21
11	Appear noise and vibration when increase pressure of lifting	Oil lifter is blocked	clean filter
12	Lifting system can't work	Swing direction of motor is not the same as oil pump	Changer revolving directon of motor
13	Appear creeping when lifting	a.There is air in piston rod of cylinder b.There is obstacle in guide mechanism	Repeating exhaust unloaded
14	Drop itself loaded	a.Hydraulic lock of cylinder is breakdown b.Seal of cylinder is damaged	Remove malfunction Replace seal
15	Derricking mechnism can't work	1.Connection wrongly 2.Fuse fused 3.Cutting out earth correction or breaking among phases of motor winding group 4.Voltage of motor is too low 5.winding conection is wrong 6.Solenoid brake doesn't declutch 7.load is too gbig or transmission machine is breakdown	1.check correcting diagram 2.Check fuse capacity is too small or replace 3.measure the voltage 4.Find out cutting out by supper power at different speed.repair breaking 5.Check voltage of brake and winding is breaking or clipped
16	Abnormal noise appears in dericking machanism and vibration is too big	1.Stator sotar scrub each other 2.Motor and retarder are not concentric 3.Bearing is short of oil seriously or damaged 4.Gears are abrasive . 5.There is noise when two phases operating	1.Check gap between stator rotor is uniformity. 2.Readjust concentricity between motor and retarder. 3.Clean bearing increase new lubricant or replace bearing. 4.Replace retarder 5.Switch off power Check and repair it.
17	The temperature of motor of derricking mechanism is too high or smoking	1.Load is too big 2.Load and operate don't measure up 3.Two phase operate 4.Power voltage is too low or too high 5.Motor winding is wiring or cutting out among phases 6.The gap of friction plates is not proper	1.Measure current of stator decrease load if exceeding rated valve 2.Load according to requirement 3.Measure three-phase current and remove problem 4.Check input voltage and correct it 5.Find out reason and repair it 6.Adjust air -gap according requirement 7.Check brake voltage and operating time of delay brake remove the problem 8.Keep up air chimney
18	Bearing of derricking mechanis is too heat	1.Bearing burned out 2.Crease is too much or too little	1.Replace bearing 2.Increase grease according to requirment
19	Derricking mechanism electricfication	1.Power crod and each connecting wrong 2.Grounding badly 3.Wiring of motor is grounding	1.Check and correct it 2.Correctly grounding
20	Derricking mechanism brake is out of order	1.Brake moment is too small 2.Wearing void of friction wafer increases	1.spring of brake is broken or out of order to replace it. 2.Brush is broken,voltage is not enough
21	It can't work when the whole starting	1.Operating grip doesn't zero adjustment. 2.Fuse burned out 3.Activate button and stop button connect badly	1.Grip zero adjustment 2.Replace fuse . 3.Repair or replace button
22	Trip when lifting operation		Check if climbing brake weather open and measuring valve changes
23	When derricking,ther is 2 speed but no 1 speed	1.Connect of grip is badly 2.Point of contactor connects badly 3.Motor is damaged	1.Repair contact point of grip 2.Repair or replace contactor 3.Repair or replace motor
24	When derricking,ther is 1 speed but no 2 speed	1.Limit switch or contact point contact badly 2.Motor is damaged	1.Repair or repalce limit switch 2.Repair or replace motor
25	Swing brake can't work	1.Brake switches contacs badly 2.Rectifier burned out 3.contact point of delay contacs badly	1.Repair or replace switch 2.Repair or replace damaged component
26	Lifting powerless and motor can't work	1.Input voltage is too low 2.Wire of AC contactor is broken	1.Check working voltage make sure input voltage is higher than requirment 2.Temperature of motor is to high
27	Temperature of motor is too high	1.Operation is too high frequency 2.Low-speed operation time is too long of lifting brake is not open	1.Reduce operation times properly 2.Check lifting brake
28	Action after lifting	Breakdown of component around operation platform,or internal electric component	Firstly check external components secondly check internal components of operation platform.And do with them .