Patent ID: 8973709
Filing Date: 2015-03-10
Classification: B61H,F16D

Abstract:
1. A brake module, for disposing on a pair of opposite tracks of a mast and connected to a lift module mounted on the mast, comprising: a pair of friction members, each friction member having a pressing portion, an axle, and a first projection, the pressing portions being arranged proximate to the tracks and the axles being arranged away from the tracks when the brake module is disposed on the tracks, the pressing portion of each friction member being shaped for matchingly engaging the track; and a pair of forcing members rotatably fitted on the axles of the friction members, each forcing member having a main body, the friction members being selectively actuated by the forcing members, the forcing members being pivotal between a first position and a second position about the axles, wherein when the forcing members are at the first position, a clearance is left between the pressing portions of the friction members and the tracks, so the pressing portions can move along the tracks relative to the mast, while the pressing portions may stop at any location on the mast by cooperating with the lift module, and wherein when the forcing members are at the second position, the friction members are displaced by the forcing members making the pressing portions to press tightly against the tracks, while holding the brake module in position relative to the tracks, wherein when the forcing members are pivoting from the first position to the second position, the main bodies urge the first projections that force the friction members to displace toward the tracks along a longitudinal axis defined by the axles, wherein the first projection has at least one head, each main body has an inner face concavely formed with at least one groove, wherein when the forcing members are oriented at the first position, the heads are received by the grooves, and wherein when the forcing members are oriented at the second position, the heads are abutted by the inner faces of the main bodies.