Apron feeder repair and maintenance procedures

Apron feeder repair and maintenance procedures :
1 plate feeder chain in use should always maintain a certain thickness of the plate material , generally not less than 200 mm , not in the emptying state board discharge

directly into the chain , when emptied belt weigh feeder can not be avoided when before unloading Lay a layer of debris in the chain plate to prevent the direct impact of chain plate, when

Clogged bulk material in the form of an explosion is not permitted discharge ;
(2) Install the rear apron feeder spout top to the distance between the top of the chain plate not less than two times the largest block of material , to ensure smooth flow of

materials to improve the service life of the chain plate . Install the guide plate , the guide plate should be installed on both sides of the bezel with the chain plate gap is

left between 50-100 mm , to avoid

Free material spill and cause friction materials and baffle sound . The bottom edge of the guide plate from the surface of the chain plate maintained at 10-25 mm , to prevent

material spills, tensioning device away from the axis of the silo wall should leave some space , usually 350-500 mm , ease of maintenance disassembly ;
3 Apron Feeder Chain pitch inside track pin bushing wear to greater than 7 mm , the sleeve should be transferred to a new angle or replace the chain ;
4 plate feeder removing expansion sets , first loosen all the screws , but do not all of the screws removed, remove the galvanized screws and washers , the removed screw into

the ring before the pressure of the auxiliary holes and gently tapping screw head , so get moving expansion sets , then pull out the screws , expansion sleeve that is pulled

along

Out ;
5 plate feeder installed expansion sets , should the original installation of the joint surface clean , evenly coated with a thin lubricant ( excluding molybdenum disulfide ) ,

the expansion sleeve screws with a torque wrench by diagonal cross uniform tighten ;
6 plate feeder unit bearing mounted head , the minimum clearance should ensure that 0.08 mm or so, reduce the amount of radial clearance 0.09-0.11 mm in between can be. Rolling

tail unit should ensure that minimum Coal vibrating screen clearance of about 0.055 mm , the radial decrease in the amount of 0.06-0.07

Can be between ;
7 plate feeder head unit within the bearing roller bearing disassembly. First demolition drive , then remove the bearing seat cover, boring cover , spacer , ring and other parts

, and then loaded on loading and unloading and loading washer MB74H nut M74H, loading and unloading through the nut screwed on the bolt loading and unloading , the cone

Remove the bearing sleeve shape shifting . Re- install and replace the bearings, the bearings before installing clean , light oil and placed in a given position of the support

shaft , and then loaded conical sleeve , with the pressure cap screwing the bolt through the tapered sleeve compression achieved a fixed bearing , the bearing pressure

Tighten the bearing radial clearance level changes depending on the size , which allows the minimum radial clearance is 0.08 mm, the amount of decrease in the radial clearance

0.09-0.11 mm;
8 Replace the plate feeder chain board, chain plates and track chain coupling bolts must be coated with Loctite 271 locking anaerobic adhesive , use a torque wrench , tighten

each bolt torque 550N.m;
9 The operator should be familiar with plate feeder structure principle , each class should be checked before each part operation is normal, chain plate connecting bolts are

loose , the examination was normal before starting operation ;
10 plate feeder and the correct operation of the bearings and gear , and regularly replaced with new oil. Replacement time first 300h, the second is not 300h;
11 Note Check the plate feeder chain plate work , especially without loosening bolts to maintain proper chain tension , if found wandering through the tensioning device should

be adjusted ;
12 occurred during operation , such as unusual sounds and fault should be immediately stopped , carefully examine the causes , troubleshooting ;
13 plate feeder ministries bearings are used ZG-4 calcium based grease (GB491-65) lubricated reducer recommend using S-P90 # extreme pressure industrial gear oil ( applicable

for dry environment ) or S-Pb90 # extreme pressure industrial gear oils ( for use in humid environments ) .