News

　　In daily special equipment inspection and inspection work, we often contact the braking device of the crane. Whether the braking device is configured in accordance with the actual situation depends on the service life and safety of the equipment. The standard series of brake devices commonly used in cranes include electric hydraulic block brakes, electromagnetic block brakes, disc brakes, belt brakes, etc. The selection generally requires consideration of type and specifications, and verification, and relevant factors such as the use environment should be considered.

　　In order to alleviate the wear of the brakes and reduce the impact and vibration caused by excessive braking, it is recommended to support the use of braking and control braking. Controlled braking is generally electric braking, such as regenerative braking, reverse braking, energy-consuming braking and eddy current braking. Electric braking is only used to consume kinetic energy and reduce the mechanism safely. When used in conjunction with electric braking, the minimum safety factor of the supporting brake should meet the original regulations separately. Secondary braking can also be used to reduce wear and impact. The first braking is used to consume kinetic energy, reduce the speed of the machinery safely and stop it. The second braking ensures safety that supports braking, such as for windproof braking. National standards stipulate that for hook cranes, when the lifting mechanism working level is equal to or higher than M4 and the rated lifting speed is equal to or higher than 5m/min, an electrical braking method should be used to ensure that when the load within the rated lifting range of 0.2-1.0 times the rated lifting weight drops, the motor speed before braking drops below 1.3 of the synchronous speed. The working environment of conventional standard brakes shall not contain flammable, explosive, or corrosive gases. If the environmental conditions exceed relevant regulations, explosion-proof brakes shall be used.

　　After the brake specification is determined, in order to ensure that the brake can effectively brake or support the load, and avoid impact caused by too long braking distance or excessive braking, the average deceleration, braking time and braking distance of the braked mechanism should be checked. Different equipment is used in different working conditions, and the relevant standards clearly stipulate the average deceleration, braking time and braking distance of the corresponding mechanism. For brakes with vertical braking and brakes frequently used in high-temperature environments, heat generation verification should be carried out to check whether the heat emitted by the brake at the maximum allowable temperature is greater than the heat generated during the braking process, so as to avoid overheating damage or failure of the friction surface.

　　In daily special equipment inspection and inspection work, we often contact the braking device of the crane. Whether the braking device is configured in accordance with the actual situation depends on the service life and safety of the equipment. The standard series of brake devices commonly used in cranes include electric hydraulic block brakes, electromagnetic block brakes, disc brakes, belt brakes, etc. The selection generally requires consideration of type and specifications, and verification, and relevant factors such as the use environment should be considered.

　　In order to alleviate the wear of the brakes and reduce the impact and vibration caused by excessive braking, it is recommended to support the use of braking and control braking. Controlled braking is generally electric braking, such as regenerative braking, reverse braking, energy-consuming braking and eddy current braking. Electric braking is only used to consume kinetic energy and reduce the mechanism safely. When used in conjunction with electric braking, the minimum safety factor of the supporting brake should meet the original regulations separately. Secondary braking can also be used to reduce wear and impact. The first braking is used to consume kinetic energy, reduce the speed of the machinery safely and stop it. The second braking ensures safety that supports braking, such as for windproof braking. National standards stipulate that for hook cranes, when the lifting mechanism working level is equal to or higher than M4 and the rated lifting speed is equal to or higher than 5m/min, an electrical braking method should be used to ensure that when the load within the rated lifting range of 0.2-1.0 times the rated lifting weight drops, the motor speed before braking drops below 1.3 of the synchronous speed. The working environment of conventional standard brakes shall not contain flammable, explosive, or corrosive gases. If the environmental conditions exceed relevant regulations, explosion-proof brakes shall be used.

　　After the brake specification is determined, in order to ensure that the brake can effectively brake or support the load, and avoid impact caused by too long braking distance or excessive braking, the average deceleration, braking time and braking distance of the braked mechanism should be checked. Different equipment is used in different working conditions, and the relevant standards clearly stipulate the average deceleration, braking time and braking distance of the corresponding mechanism. For brakes with vertical braking and brakes frequently used in high-temperature environments, heat generation verification should be carried out to check whether the heat emitted by the brake at the maximum allowable temperature is greater than the heat generated during the braking process, so as to avoid overheating damage or failure of the friction surface.