TJ2-300/300 Series Electromagnetic Drum Brakes

The TJ2 - 300/300 is a member of the TJ2 series electromagnetic drum brakes. It is a normally closed shoe brake controlled by an AC electromagnet, which is widely used in various heavy - duty industrial scenarios requiring reliable braking. The following is a detailed introduction to its core parameters, structural principles, performance characteristics, and application fields:

: The brake is mainly composed of a vertical plate frame, brake shoes, an adjusting rod, a main spring, a base, and a matching MZD1 - 300 electromagnet. The brake shoes and the vertical plate frame, as well as the vertical plate frame and the base, are connected by pins. The main spring is installed above the vertical plate frame, and the brake shoes are equipped with replaceable asbestos brake bands to enhance the friction coefficient.

: It adopts a normally closed design. When the electromagnet is de - energized, the compressed main spring exerts force to make the brake shoes clamp the brake drum tightly, thus forming a braking torque to realize the braking of the mechanism. When the electromagnet is energized and attracted, it drives the related lever mechanism to act, which makes the brake shoes separate from the brake drum, and the brake is released, allowing the equipment to run normally.

: The normally closed structure is extremely suitable for safety - critical scenarios such as lifting machinery. Once the power is cut off due to failure, the brake can automatically engage immediately, preventing dangerous accidents such as falling of heavy objects. And the single - phase AC brake electromagnet it adopts has stable performance, low electromagnetic noise and not easy to fail.

: The adjusting rod on the brake can be used to adjust the gap between the brake shoes and the brake drum. When the asbestos brake band is worn, it can be replaced independently without disassembling the entire brake body. In addition, users can also adjust the compression length of the main spring through the adjusting nut to obtain the required braking torque, which is convenient for adapting to different working conditions.

: It can work stably in ordinary industrial environments without explosive media, corrosive gases and conductive dust. Its operating temperature range and humidity range can cover the working environment requirements of most indoor and outdoor industrial sites.

This series of brakes are specially designed for mechanical braking of mechanical drive devices in heavy - load operation scenarios. The TJ2 - 300/300, with its large braking torque of 500 N·m, is more suitable for large - sized equipment. Specific applications include:

: It is installed on cranes, hoists, tower cranes and other equipment to control the lifting and lowering speed of heavy objects, and can quickly absorb the inertia of the rotating mechanism to achieve stable parking.

: It is used in the braking of mine hoists, belt conveyors and other equipment in mining areas to ensure the safe transportation of minerals. It can also adapt to the relatively harsh vibration environment in mining areas.

: It is matched with construction machinery such as winches for building construction and auxiliary equipment in metallurgical workshops. It can meet the braking needs of mechanisms such as material hoisting and conveying in these high - intensity operation sites.

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