Manual for operation and maintenance of 5ton Pneumatic winch AW50 series
Keyword：5ton Pneumatic winch Time：2024-6-20 15:33:28
PNEUMATIC WINCHES MODEL AW50 SERIES
MANUAL FOR OPERATION AND MAINTENANCE
CONTENTS
CHAPTER 1 BRIEF INTRODUCTION ………………………………………………………………2
CHAPTER 2 MAIN STRUCTURE AND PRINCIPLE OF WORK ………………………………………4
CHAPTER 3 MAIN MECHANICAL DATA……………………………………………………………5
CHAPTER 4 CONVEYING AND INSTALLMENT ……………………………………………………5
CHAPTER 5 OPERATION AND ADJUSTMENT ………………………………………………………6
CHAPTER 6 TROUBLES AND THEIR REMEDIES …………………………………………………7
CHAPTER 7 FITTING CLEARANCE AND WEAR LINITS OF THE MAIN PARTS …………………8
CHAPTER 8 MAINTENANCE ………………………………………………………………………9
CHAPTER 9 PRESERVATION AND STORAGE OF PNEUMATIC WINCHES ……………………………9
Chapter 1:Brief introduction
Adopting pneumatic motor as power, Pneumatic winch model AW series can tow and lift heavy goods through speed-reducing gearbox to drive roll. It has the advantages of compact structure,, convenient operation, safety and reliable operating, simple maintenance, smoothly running and stepless speed–changing etc.
It is suitably used in oil field, well-drilling in oil field, mine-exploiting and other place with inflammable or easy exploding air.
To ensure the pneumatic winch works normally, make best use of it and prolong its working life, it is very important for users to install, operate and maintain it correctly and carefully.
It is advisable that the consumers should read the manual book carefully before using it.
Chapter 2:Main structure and Principle of Work
through the exhaust hole of filter(1) and distributing valve(2).Circulating like this, the crankshaft(7) turns continuously which drives reel(8) turn through transmission shaft and gears.
The pneumatic motor has self-lock function. When the handle lever is in neutral position, All the inlets and outlets close. At this time, if the winch is lifting goods, the goods will not fall or fall very slowly. In addition, to ensure that users work safely, the winch also adopts brake system. according to the quantity of brake ,the system is classified into single-brake, double-brake, according to brake types, it is classified into hand-brake, foot-brake, hydraulic-brake and pneumatic brake .
CHAPTER 3:MAIN TECHNICAL DATA
Item | Specification |
Model | AW50 |
Max. lifting force | 50KN |
Max. lifting speed | 12m/min |
Rated power | 16Kw |
Air intake pressure | 0.6-0.8Mpa |
Rated air consumption | 12.7m3/min |
Wire capacity | 200m |
Diameter of wire | Φ25mm |
Base connecting dimension | 1320mm×660mm |
Net weight | 500Kg |
Chapter 4: CONVEYING and installment
1.Carrying
To avoid damaging spare parts, be sure not to knock air-distributing assembly when carry the pneumatic winch.
2.Installment
(1) Installment of well-drilling platform in oil field: the pneumatic winch has two types bases: high base and low one. Its connecting dimension and technical are in technical form.
(2) Permanent installment
The pneumatic winch should be installed on a concrete foundation made by mixing cement with sand and gravel etc. The mixing ratio of material: 1cement, 2.5sands and 4gravel.
The dimension of foundation should be wider 200mm than the connecting dimension at least.
(3) The end of air intake has two connecting ways: scale-joint and screw-joint. User can choose one of them.
CHAPTER 5 OPERATION AND ADJUSTING
1. preparation before operating:
(1) Lubricating
(1.1) Add two liter oil to pneumatic motor. Use L-DAG 46 oil in summer and L-DAG32 in winter.
(1.2) Gear transmission parts and grease gap should be added lithium base grease.
(1.3) The capacity of Lub. Oil in pneumatic winch Model XJFH is 2 liters.
(2) Remove the nut of oil injection, add 0.5 liter lubricating oil. Adjust nozzle valve to let it supply oil at the speed of 10 to 15 drop/min at the rated condition.
(3) Move the clutch lever to “engagement” position.
2. Operation
(1) Operate the lever of distributing valve as the indication of arrow mark: pulling in is lifting and pushing out is descending.
(2) After starting, let the machine run 1-2mintus without any load. Check if the brake system is reliable and find if there is abnormal sound.
3. Stopping
(1) When stopping, move the lever of distributing valve to middle position, then operate brake system to stop the engine.
(2) In urgent situation, move the levers of distributing valve and brake system at one time if necessary.
4. Precautions when operating
(1) If hear any abnormal sound when the pneumatic winch is working, should stop it and check immediately.
(2) If find obvious air leak between the surfaces of cylinder cover and distributing valve when the pneumatic is working, should stop it and check.
CHAPTER 6 TROUBLES AND THEIR REMEDIES
Troubles | Cause | Remarks |
Inadequate lifting traction | 1. The clearance of piston ring of pneumatic motor is too large because of wear and tear, the | 1. Replace piston ring. |
compressed air leak. 2. The pressure of intake air is not up to the standard requirement. 3. The supplying pipeline wasn’t installed as the standard requirement. It’s too small to supply enough air and it wastes too much pressure.. |
2. Increase the intake air pressure. 3. Reinstall the air pipeline according to requirement. | |
Difficult to start and operate | 1. After being repaired, piston connecting rod and base body was assembled without being cleaned. 2. Clutch isn’t hitched.. | 1. Dismantle the pneumatic motor and clean it again. 2. Move the lever of clutch to “open”. |
There is abnormal sound while air motor is working | 1. The clearance between the little end and big end of connecting rod is too large because of wear and tear 2. The clearance of main bearing on crankshaft is too large. | 1. Replace piston pin and copper sleeve of crankshaft and ring. 2. Replace main bearing of crankshaft. |
The brake is ineffective | The brake belt is loosen. | Adjust the adjusting blot. |
Serious leakage of lub. oil from inner gear ring | The oil seal ring of spline shaft is seriously damaged. | Replace the oil seal ring. |
Air motor is over hot | 1. Running for a long time with overloading. 2. Lubricating oil is not enough or deteriorated. | 1. Decrease loading.
2. Replenish or replace lub. oil. |
The cover of clutch is abnormally hot | Inadequate grease or worse. | Replenish or replace grease. |
CHAPTER 7 FITTING CLEARANCE AND WEAR LIMITS OF THE MAIN PARTS
Serial No. | Fitting Parts | Type of Filter | Limit of wearing (mm ) |
1 | Distributing valve filter and valve cover | Running | 0.2 |
2 | Piston pin and small end of connecting rod | Running | 0.13 |
3 | Big end of piston and copper bush | Running | 0.2 |
4 | Big end of connecting rod and ring | Running | 0.28 |
5 | Open gap of air ring | 1.2 | |
6 | Open gap of oil ring | 2 | |
7 | Roller bearing and hollow shaft | Running | 0.15 |
CHAPTER 8 MAINTENANCE
Item | Contents of maintenance | Period |
Lub. oil | Replenish Lub. oil to pneumatic motor timely, and frequently remove the oil-discharging plug to check if the oil is worse, if necessary, replace it at once |
Seven days |
Check oil injector, if necessary replenish it at once | Every day | |
Evaporating water | Check the assigning water filter, if the evaporating water is full, drain it out at once | Every day |
Grease | Replenish grease to gear drive parts and all nozzles timely | 500 hours |
CHAPTER 9 PRESERVATION AND STORAGE OF PNEUMATIC WINCHES
1. Preservation and storage for short time
If the period of preservation and storage is not over 3 months, it’s enough to wrap up the intake, exhaust gap and respirator with paraffin paper and plastic film.
2. Preservation and storage for long time
a) Remove the oil-discharging plug under the pneumatic motor and drain out Lub. oil.
b) Dehydrate about two liter of compressed lub. oil of L-DAG 32 (Heat it to 110-150°C when all the bubbles on its surface disappear). Pour 1.5 liter of this oil into the pneumatic motor, and crank it unit it is full of this oil.
c) Dismount air-mixing assembly, smear the surface of the air-mixing valve and inside of air-distributing valve with remaining dehydrated lub. oil.
d) Replenish grease to parts of gear drive and all spray nozzle.
e) Wrap up the intake, exhaust gap and respirator in paraffin paper or plastic film to keep dust out
f) Pneumatic winch should be stored in a clean and dry place with good ventilation and no corrosive gas. It is advisable to repeat the procedure when the preservation is over one year.
