German SITEMA & Co KG brakes, SITEMA & Co KG models, SITEMA & Co KG prices

SITEMA & Co KG brakes are connectors that transmit torque from the driving side to the driven side. They can be freely engaged, disengaged, or braked as required, offering advantages such as compact structure, simple operation, sensitive response, long service life, reliable use, and ease of remote control. Electromagnetic brakes are ideal automation actuators in modern industry, primarily serving to transmit power and control motion in mechanical transmission systems.

SITEMA & Co KG brake classification

1) Service brakes: Service braking (foot brake) facilitates deceleration and stopping while moving forward, rather than merely keeping the vehicle stationary. The parking brake is used only if the service brake fails. Once the vehicle has come to a complete stop, the parking brake (handbrake) must be applied to prevent forward and backward movement. After parking, in addition to using the parking brake, engage first gear when parked on an uphill slope (to prevent rolling backward) and reverse gear when parked on a downhill slope (to prevent rolling forward). In industrial brakes, crane brakes serve as both operating and safety devices for cranes. In hoisting mechanisms, brakes allow lifted or lowered loads to stop smoothly at the required height or control the lifting or lowering speed. In travel or luffing mechanisms, brakes allow the mechanism to stop smoothly at the required position. Hydraulic brakes offer advantages such as smooth operation, safety, reliability, easy maintenance, low power consumption, long service life, noiselessness, and high frequency. They are widely used in industries such as lifting and transportation, port machinery, metallurgical machinery, railway machinery, hydraulic engineering machinery, and mining machinery. 2) Elevator brakes. Brakes are one of the frequently acting safety components in elevators. They enable the elevator motor to stop rotating in the absence of power supply and effectively bring the car to a halt. The safe operation of an elevator is closely related to the working condition of its brakes. Numerous accident cases indicate that one of the main causes of personal injury and fatalities in elevator accidents is brake failure or inherent design defects, leading to phenomena such as overshooting the top floor, bottoming out, unintended movement, or even shearing. Therefore, strengthening safety inspections of elevator brakes is particularly important.

SITEMA & Co KG brake structure and applications

1) Energy supply device, including various components that supply and regulate the energy required for braking and improve the state of the energy transmission medium. 2) Control device, including various components that generate braking action and control the braking effect. 3) Transmission device, including various components that transmit braking energy to the brake. 4) Brake, the component that generates force (braking force) to hinder vehicle motion or the tendency of motion, including retarders in auxiliary braking systems. Decelerating or even stopping a moving vehicle, maintaining a steady speed for a vehicle traveling downhill, and keeping a stopped vehicle stationary are collectively referred to as braking. A series of specialized devices installed on vehicles allow the driver to apply a certain force from the external environment (mainly the road surface) to certain parts of the vehicle (mainly the wheels) according to road and traffic conditions, thereby achieving a certain degree of braking. This controllable external force applied to brake the vehicle is called braking force; such a series of specialized devices is called the braking system. The braking system used to decelerate or even stop a moving vehicle is called the service braking system; the device used to keep a stopped vehicle stationary is called the parking braking system. These two braking systems are mandatory for every vehicle.

SITEMA & Co KG brake transmission devices

Generally, the mechanical transmission components of the parking brake system are shown in the figure on the right. The parking brake system shares the rear wheel brakes 7 with the service brake system. To apply the parking brake, the driver pulls up the parking brake control lever 1, which tightens the parking brake control cable 3 via the balance lever 2, actuating the two rear wheel brakes. Due to the unidirectional action of the pawl, once the pawl engages with the ratchet plate, the control lever cannot reverse, reliably locking the parking brake linkage in the braking position. To release the brake, first lift the control lever slightly, then press the push-button 8 at the end of the lever to disengage the pawl from the ratchet plate via the pawl release rod. Then push the control lever down to the released position. This allows the pawl to lock the entire parking mechanical brake linkage in the released position. The parking brake system must reliably ensure that the vehicle remains stationary, which can only be achieved through mechanical locking methods; therefore, parking brake systems mostly use mechanical transmission devices.

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