Brake modulator for parking brake system of a work vehicle

摘要

Brake modulators for parking brake systems of work vehicles are provided. A brake modulator includes a housing defining a fluid chamber, an auxiliary chamber, a fluid inlet channel, and a fluid outlet channel. The brake modulator further includes a piston disposed within the housing between the fluid chamber and the auxiliary chamber. The piston is movable between a first position wherein the fluid chamber has a first volume and a second position wherein the fluid chamber has a second volume greater than the first volume. The brake modulator further includes a biasing element providing a biasing force on the piston towards the first position, a rod extending between a first end disposed within the housing and a second end disposed exterior to the housing, and a handle connected to the second end of the rod. The rod is manually actuatable to move the piston between the first and second positions.

主权项

1. A brake modulator for a parking brake system of a work vehicle, the brake modulator comprising:
a housing extending between a first end and a second end, the housing defining a fluid chamber, an auxiliary chamber, a fluid inlet channel in fluid communication with the fluid chamber, and a fluid outlet channel in fluid communication with the fluid chamber; a piston disposed within the housing between the fluid chamber and the auxiliary chamber, the piston movable between a first position wherein the fluid chamber has a first volume and a second position wherein the fluid chamber has a second volume greater than the first volume; a first biasing element providing a biasing force on the piston towards the first position; a rod extending between a first end disposed within the housing and a second end disposed exterior to the housing; a handle connected to the second end of the rod, wherein the rod is manually actuatable to move the piston between the first position and the second position; and a secondary biasing element which connects the rod and piston, wherein the secondary biasing element is disposed within the fluid chamber.