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Let's take a look at the performance of gearbox faults

Release date:

2022-05-07

A transmission is an industrial component that transmits power through a set of transmission wheels. At the same time, gearboxes, as mechanical parts of transmission gears, are widely used in the chemical industry. The following discusses in detail the common fault manifestations and diagnostic measures of gearboxes, starting from their applications.

A gearbox is an industrial component that transmits power through a transmission gear system. At the same time, Gearbox As a mechanical part of transmission gears, it is widely used in the chemical industry. Below, starting from the application of Gearbox the application, a detailed discussion is made on Gearbox the common fault manifestations and diagnostic measures of

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1. Gearbox The uses of

The main uses of the gearbox are: first, it can change the transmission speed through the gear set, commonly referred to in industry as a "speed-changing gearbox." Secondly, the gearbox can change the rotational torque, meaning that under the same power condition, the higher the gear speed, the smaller the torque on the gear shaft, and conversely, the larger the torque; third, the gearbox is used for power distribution. In industry, workers can use one engine to drive several driven shafts through the gearbox main shaft, so that only one engine can drive multiple loads. Fourth, the gearbox has a clutch function; the brake clutch is the clutch function of the gearbox, allowing people to freely separate two meshing gears and thus separate the load from the engine; fifth, it changes the transmission direction, preferably using two bevel gears to transmit force perpendicularly and orderly to the other side's shaft.

2. Gearbox Typical fault manifestations

Through the analysis of the actual application of Gearbox it is not difficult to identify its faults. The entire gearbox system includes bearings, gears, transmission shafts, and the housing structure. As a commonly used mechanical power system, mechanical parts, especially bearings, gears, and transmission shafts, are very prone to faults, while the probability of other faults is significantly lower than these.

When gears perform tasks, due to various complex factors, they lose working capability, and functional parameter values exceed allowable critical limits, leading to typical Gearbox faults. The manifestations are diverse and can be divided into two categories: first, gears gradually develop faults during long-term rotation. Because the outer surface of the gearbox bears relatively large loads, there is relative rolling and sliding force in the gaps between meshing gears. During sliding, the friction force is exactly opposite to the direction at both ends of the lever. Over time, long-term mechanical operation causes gear adhesion, cracking, and increased wear, eventually leading to gear breakage. The other type of fault is caused by operators being unfamiliar with safety procedures or violating operational norms and requirements, leading to negligence during gear installation or laying hidden dangers for faults from the start of manufacturing. This fault is often due to the gear bore and outer circle not being concentric, causing shape errors and asymmetric axis distribution when gears mesh.

Additionally, among every component of the gearbox, the shaft is also a part prone to faults. When a relatively large load is applied to the shaft, it deforms rapidly, directly triggering Gearbox this fault. When diagnosing gearbox faults, shafts with different degrees of deformation have varying impacts on gearbox faults. Of course, there are different fault manifestations, so there are severe and mild shaft deformations. Shaft imbalance causes faults for the following reasons: under heavy load operation, deformation over time is inevitable; the shaft itself exposes a series of defects during production, manufacturing, and processing, leading to severe imbalance in newly cast shafts.

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