Brake system for heavy equipment
OwnerJames F. Barnardinventor
Life of this patent
Estimating the term…
Abstract
A braking system for a drive mechanism for a hoist and similar operating motors used on heavy equipment. A rotor is fixedly mounted to a shaft of the drive mechanism. Actuators having brake shoes are mounted strategic to the rotor. The brake shoes are forced against the rotor by springs of the actuators to produce a braking action. The shoes are released from the rotor by hydraulic pressure compressing the springs of the actuators. Controls are provided to coordinate the action of the actuators with the function of the drive mechanism.
Claims9
A braking mechanism for selectively braking a working motor performing an operating function on heavy equipment, said motor having a drive shaft that is selectively rotatably driven and not driven as the motor is started and stopped, the drive shaft protruding through a housing component and exposed for application by a braking mechanism which comprises:
- a rotor fixedly attached to the drive shaft protruded through the housing;
- a brake shoe mounted on each side of the rotor and each brake shoe slidably movable toward and away from the rotor, a pad portion on each shoe engaging and disengaging the rotor;
- a plunger mechanism for each shoe positioned on the side of the shoe opposite the brake pad, said plunger mechanism of each shoe comprising a piston and a spring urging the piston toward the shoe for engagement of the pad with the rotor, and an expandable chamber provided in said plunger mechanism and a media source connected to the chamber, a media control for selectively pressurizing the chamber with media from said media source for expanding the chamber and thereby urging retraction of the piston;
- and
- said media control including a switch and control circuitry therefor that initiates cooperative and independent sequencing engagement, disengagement of the brake shoes with the start and stop functions of the motor.
A braking mechanism for braking a working motor performing an operating function on heavy equipment, said motor having a drive shaft protruding through a housing component and exposed for application by a braking mechanism which comprises:
- a rotor fixedly attached to the drive shaft protruded through the housing;
- a brake shoe mounted on each side of the rotor and each brake shoe slidably movable toward and away from the rotor, a pad portion on the shoe encasing and disengaging the rotor;
- a plunger mechanism for each shoe positioned on the side of the shoe opposite the brake pad, said plunger mechanism of each shoe comprising a piston and a spring urging the piston toward the shoe for engagement of the pad with the rotor, and an expandable chamber provided in said plunger mechanism and a media source connected to the chamber, a media control for selectively pressurizing the chamber with media from said media source for expanding the chamber and thereby urging retraction of the piston;
- the plunger mechanism at each side of the rotor provided with ear portions extended beyond the periphery of the rotor, a spacer provided between the ear portions and mounting mechanism including bolts protruded through the ear portions and spacer for mounting the plunger mechanism to the housing, said spacer, ear portions and mounting mechanism cooperatively arranged relative to the rotor and brake shoes for producing the desired braking function.
A braking mechanism for braking a working motor performing an operating function on heavy equipment, said motor having a drive shaft protruding through a housing component and exposed for application by a braking mechanism which comprises:
- a rotor fixedly attached to the drive shaft protruded through the housing;
- a brake shoe mounted on each side of the rotor and each brake shoe slidably movable toward and away from the rotor, a pad portion on the shoe engaging and disengaging the rotor;
- a plunger mechanism for each shoe positioned on the side of the shoe opposite the brake pad, said plunger mechanism of each shoe comprising a piston and a spring urging the piston toward the shoe for engagement of the pad with the rotor, and an expandable chamber provided in said plunger mechanism and a media source connected to the chamber, a media control for selectively pressurizing the chamber with media from said media source for expanding the chamber and thereby urging retraction of the piston;
- and
- said brake shoes mounted on each side of the rotor being removably mounted between the rotor and plunger mechanism independent of the rotor and plunger mechanism to provide removal and replacement of the brake members and not the plunger mechanism relative to the rotor.
A braking mechanism for braking a working motor performing an operating function on heavy equipment, said motor having a drive shaft protruding through a housing component and exposed for application by a braking mechanism which comprises:
- a rotor fixedly attached to the drive shaft protruded through the housing;
- a brake shoe mounted on each side of the rotor and each brake shoe slidably movable toward and away from the rotor, a pad portion on the shoe engaging and disengaging the rotor;
- a plunger mechanism for each shoe mounted on the side of the shoe opposite the brake pad and mounted independent of said brake shoe, said plunger mechanism of each shoe comprising a housing that is spaced from the rotor and the brake shoe, wherein the brake shoe is mounted in the space between the housing and the rotor, said plunger mechanism including a piston and a spring urging the piston though an opening in the housing toward the shoe outside the housing for engagement with and urging of the pad against the rotor, and an expandable chamber provided in said plunger mechanism and a media source connected to the chamber, a media control for selectively pressurizing the chamber with media from said media source for expanding the chamber and thereby urging retraction of the piston and thereby permitting slidable movement of the brake shoes away from the rotor.
Dependencies are inferred from the claim text.