BENDIX DOUBLE ANCHOR PIN CAM BRAKE 일반 설명 매뉴얼

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페이지 인쇄

Bendix

Double Anchor Pin Cam Brake

FIGURE 1

GENERAL DESCRIPTION

The Bendix 16-1/2" x 7" double anchor pin cam brake is

designed for use on heavy duty highway vehicles. It is a

mechanically actuated, leading /trailing shoe brake with a

fixed position cam and anchors.

The brake consists of two fabricated steel shoe assemblies

individually anchored to a cast iron torque spider and

actuated by a single forged cam shaft. Two retaining springs

secure the shoe assemblies to their respective anchor pins.

The twin webs of each shoe assembly engages the anchor

pin on one end and the cam roller on the other. A single

shoe to shoe return spring is used to maintain constant

contact between the shoe, cam roller and cam.

OPERATION

The Bendix cam brake operates in the following manner

during a braking application. The force of the push rod of

the actuator is converted from a linear force to a rotary

torque. This is accomplished by use of the slack adjuster.

This torque is transferred to the cam shaft of the foundation

brake due to the spline of the cam shaft being connected to

the gear of the slack adjuster. On the opposite end of the

cam shaft is the S-Cam which when rotated lifts the cam

rollers. This spreads the brake shoe ends apart and pivots

the shoes about the anchor pin so the brake lining comes

in contact with the rotating brake drum. The friction created

by the lining pressure against the drum generates the torque

necessary to provide a retarding force to slow down the

vehicle. The energy of the vehicle in motion is converted to

heat at the surface of the drum and lining. The heat raises

the temperature of the drum. The heat is stored in the drum

and finally dissipated to the air.