Qingdao Yijiaan Industry And Trade Co.,Ltd

Qingdao Yijiaan Industry And Trade Co.,Ltd
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Maintenance for the mobile platform hoist lift for truck

Author:Martin Chen Date:7/3/2019 9:10:16 PM

Maintenance for the mobile platform hoist  lift for truck 


 Maintenance:

1. This machine should be cleaned frequently to keep it clean;

2. The upper end and bottom end bearings of the lead screw should be oiled once every tow years;

3. The guide wheel and transport wheel should be oiled once every two years;

4. The lead screw and screw nut should be oiled once every tow years;

5. The reduction drive should be filled in 40# machine oil once every year. In operation the oil reserve in the reduction drive should be maintained specified oil level, not tow much nor too small.

6. Check up the working nut lock mechanism (see diagram) before working everyday. The clearance between steel ball seating and safety nut ex works is 11±1 mm.When the clearance is worn away less than 71 mm,it shows that the operating nut should be changed immediately. In addition, should check whether the lower and upper travel switches are quick to work to ensure the safety mechanism reliable.

7. The friction tape of the electromagnetic clutch should be periodically checked for worn condition and should be changed immediately if found damaged. After shutdown, if the screw nut slides down, can adjust the spring adjustment bolt of the clutch to add its friction and prevent the downslide.

Notice:

1.After the lifter finishes its operation, should pull the power switch to OFF position.

2.In the general rising or descending of the lifter, should not fully rely on up and down travel switches to shut down the lifter. As the travel switch is controlled by upper limit and lower limit, the appropriate height should be set according to the actual working height to avoid the damage to the travel switch due to the frequent elevating and knocking.

3.When the clearance between steel ball seating of the operating nut safety mechanism and safety nut is less than 7mm,should change screw nut immediately and don't fully rely on the safety mechanism till the screw nut is worn away.

 

 

Common electrical faults and trouble-shooting method:

Fault

Reason

Trouble-shooting method

General action or single action out of work

General action or single action out of work

Switch on and check the switch

Loss of phase or overload for one electrical motor several electrical motors

Check each electrical motor

NO.1 upright post rising or descending switch damaged ,line circuit broken

Repair or change travel switch, connect the line circuit

NO.2 upright post electrical motor work, but no.2 upright post and general action not working

No.1 upright post rising or descending switch damaged, line circuit obstructed

Repair or change travel switch, connect the travel switch circuit

NO.1 and 2 upright post electrical motors work, but no.3 and 4 upright posts not working

NO.3 upright post rising or descending switch damaged ,circuit broken

Repair or change travel switch, connect the travel switch circuit

No.1,2 and 3 upright post electrical motors work, but no.4 upright post not working

NO.4 upright post rising or descending switch damaged, circuit broken

Repair or change travel switch, connect the travel switch circuit

The lifter’s electrical motor can only one-way operate.

The travel switch at the reverse end not working, circuit broken

Repair or change travel switch, connect the travel switch circuit

The lifter elevating button is opposite to the actual operation.

Reversed incoming lines of power or electrical motor

Adjust power or electrical motor phase lines

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