BENDIX SINGLE ANCHOR PIN CAM BRAKE 일반 설명 매뉴얼

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페이지 인쇄

Bendix

Single Anchor Pin Cam Brake

FIGURE 1

GENERAL DESCRIPTION

The Bendix

15" x 4" single 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 anchor.

The brake consists of two fabricated steel shoe assemblies

anchored to a cast iron torque spider and actuated by a

single forged S-cam shaft. Two retaining springs secure

the shoe assemblies to the anchor pin. The twin webs of

each shoe assembly are keyed to 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 equally

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.

This heat raises the temperature of the drum. The heat is

stored in the drum, and finally dissipated to the air.