Common failure of chain conveyor chain and its solution

Common failure of chain conveyor chain and its solution

The chain type used in chain transmission, rich product range, including transmission gear chain, chain CVT, long pitch conveyor chain, short pitch roller chain, double pitch roller chain conveyor chain, transmission speed, roller chain, heavy-duty drive plate bending roller chain, transmission, double pitch roller chain short pitch roller chain plate chain etc..

Stainless steel chain, as the name suggests, is a chain of stainless steel as the main casting material. The chain has good corrosion resistance and can adapt to the working environment of high or low temperature. The main applications of the stainless steel chain are the food manufacturing and processing industry, the chemical industry and the pharmaceutical manufacturing industry.

2. Self lubricating chain
The necessary material for self-lubricating chain is a special sintered metal that is filled with lubricating oil. The chain made of this metal has the ability of wear resistance and corrosion resistance, and can finish self lubrication, no need for maintenance, more convenient to use, and longer service life. The self lubrication chain is more suitable for high wear resistant and not easy to maintain, such as the food automation production line and so on.

3. Rubber chain
The rubber chain is made by adding a variety of rubber to the attached plate after adding U - shaped attached plate to the outer chain of the common chain.  The rubber used for rubber chain is mostly natural rubber NR or silicone rubber SI, etc., so that the chain can get better wear resistance and reduce noise in operation and increase anti vibration ability.

4. High strength chain
High strength chain is a special roller chain. It improves the shape of chain plate on the basis of original chain, and makes special treatment for chain plate, chain plate hole and pin shaft. The high strength chain has a good tensile strength, which is 15% to 30% higher than the tensile strength of the common chain, and has good impact resistance and fatigue resistance.

The failure types of chain conveyor chain are as follows: chain plate damage, transmission chain in the chain plank slot, transport chain on the power sprocket, shedding, link chain breakage and chain link damage.

a, most of the damage of the chain plate is excessive wear and bending deformation, and occasionally there is cracking. The main reasons are as follows: the uneven laying of the bottom plate of the chain plank machine or the bending angle beyond the design requirements; the joint of the chain plank machine is not good or partial deformation.

b, the chain transfer chain plate slot prolapse, the reasons are: the chain conveyor chain plate to tank bottom plate according to the design requirements in the laying of paving tile straight, but uneven, excessive bending; chain plate chain conveyor groove or serious wear, make the gap between the two is too large;

c, the power sprocket and the transmission chain can not be meshing normally, causing the transmission chain to fall off on the power sprocket, which is commonly known as the "tooth jumping" phenomenon. The main reasons are as follows: the dynamic sprocket is seriously worn or churned into the sundries, and the two chains are not consistent.

d, connection chain ring fracture. All our chain conveyor chain is connected with production in accordance with the relevant standards, the breaking load is about 10 times the chain plate can bear tension, safety factor, theory should not be broken chain accident, but the link failure rate in actual use is large, the study of its causes the main is: long time under pulsating load, fatigue failure in far below the breaking force, fracture, general connection link in the transition arc and line; manufacturing quality does not meet the standards, materials and heat treatment level does not pass;

e. The chain ring is damaged. In actual use, because the connecting link is usually larger than the conveying chain, the wear condition is also serious, so the connecting link has become the weak point in the whole transmission chain. It is the main damage form of serious wear, fracture, open, the reasons are: under pulsating load, long-term fatigue failure; the connecting pin or bolt loosening, supplement failed to find the link with uneven force or pull off.