The most common failure of belt conveyor, do you know what it is?Oil leakage and high oil temperature;Gaberta xiaobian in this aspect is also quite a research, here to show the two aspects of the reasons and solutions to share with you, you can take a notebook oh:

One, reducer oil leakage

(a) causes of oil leakage

1. Oil leakage at the bonding surface

The main reasons are that the roughness of the joint surface does not meet the design requirements, the tightening torque of the bolt at the joint is uneven, and the deformation of parts during heat treatment.

2. Oil leakage at the input and output ends

(1) oil seal damage

When assembling the oil seal, the belt conveyor does not ensure the coaxiality between the outer diameter of the oil seal and the inner diameter of the end cover, which leads to wear during rotation.High temperature is the main factor that causes the oil seal damage. Because the shaft and the oil seal are in contact with each other, when the shaft speed is too high, the oil seal in contact with it will wear worse, a long time will lead to the oil seal due to high temperature and carbonization failure.

There are also cases caused by the transfer of temperature. For example, when the outer end face of the input end cover equipped with oil seal interferes with the output end of the connected parts, the heat generated by friction is transferred to the oil seal inside the end cover in a short time, resulting in the thermal deformation of the lip, thus losing the function of sealing.

(2) wear of the shaft

Because the reducer is used for a long time, it will cause the outer surface of the shaft where the oil seal is placed to be worn, which can not guarantee the original tolerance. The slight wear will reduce the sealing effect of the skeleton oil seal, and the severe case will lose the sealing effect.At the same time, when the reducer shaft surface roughness is large, it will be difficult to form a lubricating oil film to increase the probability of oil leakage.

3. Too much oil

If the amount of oil in the reducer is more than the required amount of oil, the oil in the oil tank will be gear and other rotating parts violently stirred, so that the lubricating oil in the box everywhere splash, will make a large number of lubricating oil accumulation in the belt conveyor shaft seal, joint surface, increase the probability of oil leakage.Too much oil can also affect heat dissipation and other problems.

4. Oil leakage at the end cover

The bearing hole at the input shaft and output shaft of the reducer cannot be fully matched with the inner wall of the bearing ring because the machining precision is not enough or the bearing is not fully assembled.The oil will flow out of the fit gap, causing leakage.

(2) measures to solve oil leakage

(1) reasonable assembly

The so-called reasonable assembly is in strict accordance with the rules and regulations to assemble, can not be brutal operation.Before assembling each combination surface, clean the oil, dust and other impurities on the combination surface with cleaning agent, and then apply the sealant evenly on the combination surface (note: do not apply into the connection of the threaded hole), to ensure that an effective seal can be achieved.The bolt connecting the two parts should adopt the way of diagonally compacting and matching to ensure the uniform force and complete contact.

(2) timely oil return

Refers to cannot let was splashing of redundant oil on the bearing in axial pincer-like device accumulation, to make extra lubricant oil groove along the back flow back to the trunk, is in the center of the bearing seat down along the processing of a tilt to the casing back into the tank, but also a gouges where whole pieces were missing in the end cover check mouth also processing, gouges where whole pieces were missing to facing return chute, such excess lubricating oil will be the gouges where whole pieces were missing, return chute flow back to the casing.

(3) oil seal selection and shaft protection

In the choice of oil seal should be preferred to use oil resistance, heat resistance and oxidation resistance good material, dust and sealing sometimes will have contradictions, according to their respective importance relative balance.Heat treatment protection is carried out at the position where oil seal is placed on the shaft to improve the surface hardness and make it wear resistant.

(4) repair of reducer box and shaft

For casing deformation or bearing hole size out-of-tolerance reducer for the body to carry on the processing, a datum reducer trimmed first, and then according to the datum will speed reducer of the processing size of grinding and thickening of the up and down, or box of reducer bearing hole again after processing, to ensure the accuracy, such not only solved the bearing hole size out-of-tolerance problem, and solve the problem of casing deformation.

Two, reducer oil temperature is too high

(I) cause analysis

(1) damage of machine parts.Including gears;Serious pitting, broken teeth, bearing cage, inner and outer rings, ball damage, and serious bearing holding or shaft deformation;

(2) the exterior of the box is covered with sundries or pulverized coal.When things are stacked around the reducer or the body surface has not been cleaned for a long time, it is possible to cause the reducer heat dissipation is not complete due to the debris or the coverage of the oxide scale so that the oil temperature rises;

(3) the cooling device is blocked or fails.The cooling device is placed in the factory with large dust like the reducer. If the cooling device is blocked or the cooling device is broken due to long-term work without cleaning the internal pipelines, the oil temperature of the reducer will rise.

(2) solutions

(1) carefully check to find out the damaged parts and timely repair or replace the parts;

(2) remove sundries and pulverized coal;

(3) replace the cooling device or remove the plug.

For the reducer oil leakage, high oil temperature and other common problems, users should take targeted measures according to specific reasons in actual production, in order to timely solve the recovery of production.

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