Bearing is a very important component, but if you do not pay attention to protection and correct use, it is easy to form rust and affect normal use. How to maintain it normally?

1. Appropriate cleaning methods should be selected according to the material function and environmental conditions of the gantry crane. Common cleaning methods include chemical cleaning, mechanical cleaning and solvent cleaning. It should be noted that the appearance after cleaning should be dry. You can use filtered dry compressed air to dry, or you can use a dryer to dry. In addition, under simple conditions, the bearings can also be wiped dry with cotton cloth.
2. On the basis of cleaning, apply appropriate anti-rust oil with anti-rust oil. The application of anti-rust oil should be based on the use and size of the single-girder crane to select a suitable coating method.

The method of applying anti-rust oil is as follows:

1. Spraying method: For large cranes, the spraying method will be more suitable and convenient. It is suitable for solvent-diluted anti-rust oil or thin-layer anti-rust oil, but it must adopt perfect fire protection and labor protection measures for safety protection.
2. Immersion method: For smaller bearings, they can be soaked with anti-rust grease to make the grease adhere to the surface of the bearing and play a protective role. The thickness of the oil film can be adjusted according to the actual situation, and the temperature and viscosity can be adjusted;
3. The above are two important aspects of how to prevent the bearing of gantry cranes from rusting. One is cleaning, and the other is to choose a suitable anti-rust oil alteration method to prevent corrosion more safely and effectively, and then make it work.

Improve system drive 

The lifting organization is driven by a motor. The power is transmitted to the high-speed shaft end of the reducer through the gear coupling, the compensation shaft and the brake wheel coupling. When the motor speed drops to the required speed through the reducer, the power is output from the low-speed shaft of the true reducer. The power is transmitted to the drum group through the inner ring of the drum. Then the power is transmitted to the drum group through the steel wire rope and the pulley group. Hooks are used by bridge cranes to lift and lift heavy objects.

Transmission of trolley operation system

The power generated by the motor is transmitted to the high-speed shaft end of the vertical three-stage reducer through the brake wheel coupling, the compensation shaft and the half gear coupling. After the high-speed shaft end of the motor is decelerated to the required speed by the vertical three-stage reducer, the power is transmitted through the low-speed shaft of the reducer, and then connected through the small main drive axle. The half-gear coupling, compensation shaft and half-gear coupling of the bridge crane transmit power to the high-speed shaft end of the vertical three-stage reducer. Drive the wheels to roll and complete the lateral transportation of heavy vehicles.

Transmission of cart operating system

The power generated by the motor is transmitted to the high-speed shaft end of the reducer through the brake wheel coupling, the compensation shaft and the half gear coupling. When the high speed of the motor is reduced to the required speed by the reducer, the bridge crane outputs power from the low speed shaft of the reducer, and is connected to the main motor shaft through a full gear coupling to drive the main motor runner to complete the longitudinal suspension of the bridge. The purpose of transferring heavy objects. The drive organization at both ends of the crane is the same.

When the crane is in use, various moving parts will inevitably produce wear, loose connections, oil deterioration, and corrosion of the metal structure, which will cause different degrees of reduction in the technical performance, economic performance and safety performance of the crane. Therefore, in order to prevent and eliminate hidden dangers and ensure that the crane is always in good condition, the crane should be maintained and maintained before the wear of parts in the daily maintenance of the crane has reached the level of affecting the failure of the crane.

Good crane maintenance can play the following roles.

1. Crane maintenance ensures that the crane often has good technical performance, is the normal and reliable operation of each organization, and improves its intact rate, utilization rate and other management indicators.
2. Ensure that the crane has good performance. The maintenance of the crane can strengthen the protection of the structural parts, keep the connection firmly, the movement and function of the electro-hydraulic components are normal, avoid abnormal vibration due to electromagnetically factors, and meet the normal use requirements of the crane.
3. Ensure the safe use of the crane.
4. Comply with relevant environmental protection standards stipulated by the state and departments.
5. Reasonably and effectively extend the service life of the crane. Through the maintenance of the crane, the repair interval of the crane or mechanism is effectively extended, including the overhaul period, thereby extending the service life of the crane.

When we use cranes, we often encounter power failures due to some reasons. At this time, due to inertia, the equipment cannot stop operation immediately, which can easily cause it to crash the work piece or the machine tool. In severe cases, it can also cause other accidents. The vibration generated by the crane during operation makes the sliding iron and the guide rail not firmly integrated, and the power supply has problems, which causes the main contact and the normally open auxiliary contact of the main contractor to be disconnected at the same time, and the main contractor coil fails to lock and causes the power to be cut off.

The partial contact of the sliding iron is poor, causing the crane to lose phase instantaneously when it reaches a certain section of the sliding rail. If the missing phase happens to be connected to the control circuit, the coil of the main contractor will be de-energized and self-locking will fail. The device is re-energized after slipping through the poor contact due to inertia, and the main contractor coil cannot be closed by itself. Press the start button again. The vibration generated when the crane lifts heavy objects makes the main contractor not close tightly, the main contact and the normally open auxiliary contact are disconnected due to vibration at the same time, and the main contractor coil fails to lock and loses power. So how should we deal with it:

Crane handling measures:

The crane control circuit is connected from the three-phase 380V power supply through the switch QS, and the two-phase power supply is taken from the three-phase power supply as the power supply of the control circuit, to supply power to the main contractor coil KM, and the overcurrent relay normally closed contact KI is serially connected to the control circuit. , KI1, KI2, KI3, overload protection for each motor.

Connect 3 limit switches SQ1, SQ2, SQ3 in series for chain protection.

The button SB is used to start, and the two normally open auxiliary contacts KM of the main contactor complete the self-locking of the main contractor.

The following groups of position limit switches and the corresponding two pairs of contacts of each cam controller work together to complete the limit of the crane.

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Advantages of intelligent coke tank crane

1. Automatic precise positioning, wireless video monitoring and other technologies are used to greatly enhance the degree of human-computer dialogue and improve work efficiency.
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4. In the design and manufacture of coke tank crane, the use environment of coking industry is fully considered to ensure the excellent performance of crane equipment in operation, use and other aspects to meet the needs of production process.

An overhead crane, which is also known as a bridge crane, is a material handling product that is critical for work flow production. It involves a hook-and-line mechanism that runs along a horizontal beam which runs on a supporting structure called a runway beam.

overhead cranes come in single, double and box girder designs which depend on your lifting capacity or application. Typically, single girder designs support lifting capacities up to approximately 20 tons with spans of 60 ft. Anything above would be supported by a double or box girder.

Choosing the right solution is critical as there are multiple configurations that need to suit your needs. This is why a majority of them are custom tailored per application.

1. What is the load capacity you need?

The maximum weight of your application should not exceed the lifting capacity of your crane.

2. What is the crane span needed?

   The span or width of your crane system is critical in determining the size of the crane needed. Will it be the width of your building or a work station? An example would be that typically, overhead cranes operate from the ceiling of your building and gantry cranes on the floor in a specific work area.

3. How long will the crane be used?

   The operational frequency that your crane will be used will define the crane classification required for your application. Each classification is clearly defined using the CMAA service classes by the Material Handling Industry of America.
   4. Free standing or building attached runways?

   Typically, overhead crane systems are supported by runway structures that are attached to the building to reduce the amount of space needed for the structure. An alternative method is a free standing runway to support your structure.
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