博文

Fault analysis of gear reducer

The gear reducer is a power transmission mechanism that uses a gear speed converter to decelerate the number of revolutions of the motor to a desired number of revolutions and obtain a device with a large torque. The gear reducer is a relatively precise machine that is used to reduce the speed and increase the torque.

To better understand your equipment, you should know where it is often faulty and how to repair it. The most common faults of gear reducers are tooth spalling, pitting, falling and broken teeth, especially at low speeds. Gears, falling blocks and broken teeth are the most frequent.

According to the analysis, the position of the gear reducer of the gear reducer is generally asymmetrical, so that the gear shaft of the low speed large gear of the gear reducer is skewed, and the center line and the center line of the gear shaft of the two pinions meshing with it are not parallel, resulting in a low speed large gear. The gear teeth of the two pinions are reduced, most of whic…

Drive classification knowledge of gear reducer

Gear reducer drives include standard gear drives, height shift gear drives and angular shift gear drives. The main purpose of classifying the gear reducer in this way is to avoid undercutting to reduce the size and weight of the mechanism, in order to improve the wear of the gear pair and to improve the load carrying capacity of the gear reducer.

In general, gear reducers utilize mechanical transmission of power and moving parts. The mechanical transmission of gear reducers is widely used in mechanical engineering. There are many forms, which can be divided into two categories:

The first one is the friction transmission that transmits power and motion by the friction between the gear reducer and the machine, including belt drive, rope drive and friction wheel drive.

The friction transmission of the gear reducer is easy to realize stepless speed change, and it can adapt to the transmission occasion with large shaft spacing. The overload slip can also play the role of buffering and prot…

Gear reducer selection method

The selection of gear reducers is a problem that many manufacturers have to face. To meet the actual needs and to reduce the production cost is a problem they must consider. Then Xiaobian is here to popularize the gear reduction for everyone. Machine selection knowledge.

1. The function and performance of the gear reducer:
First understand the model specifications, functional characteristics, protection type, rated voltage, rated current, rated power, power frequency, and insulation level of the gear reducer. These contents are important reference for users to correctly use, maintain and select the gear reducer.

2. The use environment of the gear reducer:
Mainly refers to the user needs to know the environmental conditions that the gear reducer will use, such as normal temperature, high temperature, high cold, corrosion degree, vibration, sand, altitude, electromagnetic pollution.

3. Practical application of gear reducer:
The user needs to know the characteristics of the gear to be us…

Gear reducer common faults and solutions

Gear reducers are commonly used in a variety of mechanical equipment, and have been widely used in many industries. In actual production, some gear reducers may have abnormal malfunctions such as noise, wear and oil leakage. How to solve these faults?

In the long-term operation of the gear reducer, there are often faults such as wear and leakage. The most important ones are:
1. The bearing chamber of the gear reducer wears, which in turn includes the wear of the bearing housing, the bearing housing of the housing, and the bearing housing of the transmission.
2. The shaft diameter of the gear reducer is worn, and the main wear parts are in the shaft head and keyway.
3. The bearing position of the gear reducer drive shaft wears.
4. The gear reducer joint surface leaks.
 For the wear problem of the gear reducer, the traditional solution of the enterprise is repairing after repair welding or brush plating, but both have certain drawbacks. For example, the thermal stress generated by the r…

Gear reducer shaft breakage

Except for the broken shaft of the gear reducer due to the poor concentricity of the output of the gear reducer, the output shaft of the gear reducer is broken, which is due to the following reasons.

First of all, the wrong selection results in insufficient output of the gear unit. Some users mistakenly believe that as long as the rated output torque of the selected gear reducer meets the working requirements, it is not the case. First, the rated output torque of the motor is multiplied by the reduction ratio, and the obtained value is in principle smaller than The rated output torque of the similar reducer provided by the product sample, and the overload capability of the drive motor and the maximum working torque required in practice are also considered. In theory, the maximum working torque required by the user. Must be less than 2 times the rated output torque of the gear reducer.

In particular, in some applications, this criterion must be strictly observed. This is not only the p…

Gear reducer daily maintenance protection measures

Under normal circumstances, in order to prevent the gear reducer from malfunctioning during operation and use, we take the measures of short-circuit protection, overload protection and phase loss protection to carry out routine maintenance and protection measures for the gear reducer.

First, short circuit protection
Short-circuit protection means that the low-voltage gear reducer below 7:500v is protected by the electromagnetic instantaneous release of the fuse or circuit breaker, so that the short-circuit fault of the gear reducer can be cut off in a timely and reliable manner. The power supply of the gear reducer avoids the loss of the gear reducer and its wiring and other electrical equipment due to the strong short-circuit current, which in turn causes significant losses.

 Second, overload protection
We know that the overload current of the gear reducer does not necessarily melt. Therefore, we need to use the thermal release of the thermal relay or circuit breaker for overload pro…

Maintenance scheme for gear reducer transmission line

If all gear reducers work reliably and all complex drive systems run for long periods of time, the production process can be carried out smoothly. This involves all components of the drive line: gear reducers and transmissions, matching and supply systems (such as cooling and oil supply systems). Before the function reaches its limit, each unit (module, component) of the entire drive line (reducer) will have different degrees of wear (wear, aging, corrosion, etc.).

The task of the system service is to take appropriate individual measures for each unit of the drive line and to restore the target state of the entire drive system in time before the failure. The purpose of individualized measures for all system services is to increase the availability of the entire drive train.

We achieve these goals by adhering to all available tools, combined with a detailed analysis of all components. Diagnostic measures, basic services and extended services to ensure the reliability of your gearbox.

T…