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Shanghai Jingbang Transmission Equipment Co., Ltd.

Tel: 021-59793568

Mobile: 139-1704-4039 (same number of wechat)

Email: shanghaibelts@163.com

website: www.shanghaibelts.com

Address: Changshu Industrial Park, Jiangsu Province

Types and causes of conveyor belt fracture

2020-10-13 12:00:00
times

1. Cold resistant conveyor belt with transverse fracture at joint

Conveyor belt joints are mainly vulcanized joints with good wear resistance, but poor pressure resistance. Improper handling of interface may lead to problems such as interface wear, glue opening, crack and peeling. If measures are not taken in time, under the action of tensile force, through the body friction and material erosion, the damage and deterioration speed of the joint will be accelerated, which will cause the scar to expand and the strength of the conveyor belt to reduce, so that the bonding part will become the weak point of the conveyor belt. Once the instant tension of the conveyor belt increases, it is very easy to cause belt breakage.

2. Slip and wear off of driving drum

When the conveyor belt passes through the roller, it moves relative to the roller, which is called slippage. Slip does not necessarily occur in the drive drum, but it is particularly frequent at the drive drum. Sliding will make the conveyor belt temperature rise, damage accelerated, thinning until complete fracture. The main causes of skidding are as follows:

① The material accumulation at the bearing point and the blocking of large material at the guide groove cause the conveyor belt overload;

② Failure of tensioning device;

③ There is oil and ice on the driving drum, and coal slurry or other materials enter between the drum and the conveyor belt, which reduces the friction coefficient between the conveyor belt and the driving drum and causes slipping.

Cold resistant conveyor belt specification

3. Conveyor belt edge pulling

Conveyor belt edge tearing is the most common form of conveyor belt tearing, the root cause of which is excessive belt deviation. The running deviation of the conveyor belt will rub with the frame and idler frame, which will cause flanging, scratch and cracking. If it is caught by the discharger and frame during operation, it will cause edge tearing. There are many reasons for belt deviation, but they can be divided into two types

One is equipment installation problems or poor quality. The common factors are: 1) the frame and idler bracket sink or deform; 2) the bearing idler group is not installed correctly; 3) the tensioning device is inclined; 4) the conveyor belt joint is not correct.


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The second is due to poor operation conditions. The reasons include: ① the dropping point is inclined; ② the pressure of the discharger is uneven; ③ there is too much sticky material on the surface of the roller; ④ the material quantity changes or flow conditions cause the conveyor belt deviation.

4. Longitudinal tear of inner side of conveyor belt

Longitudinal tear of conveyor belt refers to the appearance of large cracks or complete tear, which is the most serious form of conveyor belt damage. The main causes of longitudinal tear on the inner side of conveyor belt are as follows:

① There are iron pieces, big stones and other hard sundries in the materials. During the conveying process, these sundries are stuck in the guide groove or hung in the middle of the sweeper roller and other structures, causing longitudinal scratch or tearing of the conveyor belt.

② Loosening and falling off of the upper level equipment fasteners, or falling of the material pipe liner and material guide plate caused by vibration and impact, which is stuck in the material guide groove or other parts, causing scratch on the conveyor belt.

③ The idler is missing continuously, the conveyor belt sinks under load, and the idler bracket wears the conveyor belt.

④ The joint of the conveyor belt was opened or partially damaged, no measures were taken, and it was caught by the plough, sweeper and buffer bed during operation.

⑤ In the process of operation, sharp foreign matters such as sweeper, idler, gangue and iron parts are brought into the drum and return conveyor belt, causing scratch or even tearing.



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