Hengyang Heavy Industry Hydraulic Wheel Side Brake YLBZ63-200 Compact Structure

1) Collar-from-shoe brake

　　The characteristics of the two brake shoes each have a pivot point, a hoof in the wheel cylinder under the action of the driving force to open the direction of rotation and the direction of rotation of the brake drum, known as the collar shoe; another hoof open the direction of rotation and the direction of rotation of the drum in the opposite direction, known as from the hoof.

　　The leading shoe under the action of friction, the positive pressure between the shoe and the drum is larger, the braking effect is stronger. From the shoe under the action of friction, the positive pressure between the shoe and the drum is smaller, the braking effect is weaker.

　　The two brake shoes are subjected to equal wheel cylinder force, known as equal force brake.

　　The two brake shoes of the collar-from-shoe brake act on the brake drum with unequal sizes of normal reaction force, and this brake is called unbalanced brake.

2）Double-collar-shoe and bidirectional double-collar-shoe brakes

　　The brake in which both brake shoes are collar shoes when the car is moving forward is called double collar shoe brake.

Bidirectional Double Collar Shoe Brake

　　The structural feature of the double collar shoe brake is that each brake shoe is actuated by a single piston brake wheel cylinder, and the structural arrangement of the fixed components is centre-symmetrical.

　　The bidirectional double-lead shoe brake uses two double-piston wheel cylinders, and is called a bidirectional double-lead shoe brake because it is a double-lead shoe brake regardless of whether the car is moving forward or reversing.

3）Double Collar Shoe Brake

　　When the car is moving forward, the two brake shoes are both slave shoes for the double slave shoe brake.

　　The arrangement of fixed components of double collar shoe, two-way double collar shoe and double follower shoe brake are all centre-symmetric, and the normal reaction force of the two brake shoes acting on the brake drum is equal in size, opposite in direction, and balanced with each other, and this form of brake is a balanced type brake.

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