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Video Brakes
Video Single-circuit System
Video Dual-circuit Brake
Video Disc Brake
Video Turning Brake-discs
Video Disc parking brake
Video Drum Brake 1
Video Drum Brake 2
Video Drum Brake 3
Video Engine Brake
Video Master Cylinder 1
Video Master Cylinder 2
Video Brake Pad
Video Brake Pad 2
Video Brake Pad 3
Video Brake Fluid 1
Video Brake Fluid 2
Video Brake Servo
Video Brake assist system
Video Electr. Brake Servo
Video ABS 1
Video ABS 2
Video ABS 3
Video ABS 4
Video ABS/ESP-Hydr. Unit
Video ESP 2
Video Wheel sensor 1
Video Wheel sensor 2
Video Parking Brake
Video Overrun Brake 1
Video Overrun Brake 2
Video Brake recuperation 1
Video Brake recuperation 2
Video Brake recuperation 3
Video Elektro-hydr. Brake 1
Video Elektro-hydr. Brake 2
Video Calliper (electr. brake)
Video Brake Test Stand 1
Video Brake Test Stand 2
Video Floating Brake
Video Sliding-calliper 1
Video Sliding-calliper 2
Video Sliding-calliper 3
Video Sliding-calliper 4
Video Brake doesn't release
Video Disc-brake Caliper
Video Disc brake failure 1
Video Disc brake failure 2
Video Fixed-calliper 1
Video Fixed-calliper 2B
Video Fixed-calliper 3
Video Parking Brake 1
Video Parking Brake 2
Video Parking Brake 3
Video Parking Brake 4
Video Carbon Brake Disc
Video Ventilated Disc 1
Video Ventilated Disc 2

Video Compressed Air Brake 1
Video Compressed Air Brake 2
Video Electr. Compr. Air Brake
Video Driving Preparation
Video Drum Brake (truck) 1
Video Drum Brake (truck) 2
Video Drum Brake (truck) 3
Video Drum Brake (truck) 4
Video Disc Brake (truck) 1
Video Disk Brake (truck) 2
Video Trailer Brake System
Video Handbrake
Video Brake-air Compressor
Video Water-drainage
Video Air Dryer
Video Pressure Regulator
Video Four-circuit Protection
Video Dual-circuit Brake
Video ALB Regulator
Video Diaphragm Cylinder 1
Video Spring-type Cylinder 1
Video Spring-type Cylinder 2

Video Force (brake)
Video Distance (brake)
Video Time (brake)
Video Brake (pedal-force)

Video Brake (general) 1
Video Brake (general) 2
Video Hydraulic brake 1
Video Pneum. Brake 1
Video Pneum. Brake 2


          A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Overrun Brake







Assignment

The old overrun brakes had one serious disadvantage. Whenever one wanted to drive in reverse, someone else had to operate the handbrake on the trailer. Then the towing vehicle was driven a small distance, so that at the rear, a spring-loaded shackle could snap into place. After releasing the handbrake nothing more stood in the way of reversing. If one then pulled off forwards a little more vigorously, the shackle could return to its initial position or perhaps not

Function

Today, the mechanism has come a lot further. One now makes use of the difference between braking and reversing. Even when braking, the drum - compared with the anchor-plate - always turns in the same direction. The above drawing should make the principle clear. As long as braking takes place when driving forwards, both brake-shoes remain in this position. Also the center of rotation of the right, running-off shoe, does not change.Should however, the brake-drum turn backwards, a braking action is triggered, which together with the rotation of the brake-drum, causes the right brake-shoe to be pushed against a spring found nearer to the center of rotation. Using an increased amount of effort, the trailer can be pushed backwards. The effort, due to the remaining friction of the brake-pads is necessary to keep the spring under tension. If the tension decreases, the right brake-shoe returns to its initial center of rotation. 05/10






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Translator: Don Leslie - Email: lesdon@t-online.de

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