Brake assembly for railway truck

Abstract

The present disclosure provides a brake assembly for a railway truck. The railway truck includes a frame. The brake assembly includes a live lever assembly including a pair of spaced apart live levers. The brake assembly includes a dead lever assembly. The brake assembly includes a slack adjuster disposed between the live lever assembly and the dead lever assembly. The brake assembly includes a hanger lever disposed between the pair of live levers. The hanger lever is pivotally coupled to the live levers. The brake assembly further includes a connecting terminal disposed on the slack adjuster, wherein the connecting terminal is coupled to the hanger lever via a trigger rod. The brake assembly further includes a first brake shoe attached to the hanger lever and a second brake shoe attached to the dead lever assembly.

What is claimed is: 
     
         1 . A brake assembly for a railway truck, the railway truck including a frame, the brake assembly comprising:
 a live lever assembly including a pair of spaced apart live levers;   a dead lever assembly;   a slack adjuster disposed between the live lever assembly and the dead lever assembly;   a hanger lever disposed between the pair of live levers, the hanger lever pivotally coupled to the live levers;   a connecting terminal disposed on the slack adjuster, wherein the connecting terminal coupled to the hanger lever via a trigger rod;   a first brake shoe attached to the hanger lever; and   a second brake shoe attached to the dead lever assembly.   
     
     
         2 . The brake assembly of  claim 1  further comprising a bracket rigidly coupled to the frame, the bracket disposed between the pair of live levers, the bracket including:
 an opening; and 
 a pair of holes supporting the hanger lever in the opening of the bracket. 
 
     
     
         3 . The brake assembly of  claim 1 , wherein the first and the second brake shoe is coupled to the hanger lever and the dead lever assembly via a first brake head and a second brake head respectively. 
     
     
         4 . The brake assembly of  claim 1 , wherein the live lever assembly and the dead lever assembly include a proximal end and a distal end and wherein the slack adjuster is pivotally coupled to the distal ends of the live lever assembly and the dead lever assembly. 
     
     
         5 . The brake assembly of  claim 4  further comprising an actuation system, the actuation system comprising:
 a pneumatic cylinder rigidly attached to the frame; 
 a crossover lever operatively connected to the pneumatic cylinder, the crossover lever pivotally coupled to the frame and the push rod; and 
 a push rod coupled to the proximal end of the live lever assembly and the crossover lever. 
 
     
     
         6 . The brake assembly of  claim 4 , wherein the dead lever assembly comprising a pair of spaced apart dead levers and wherein the proximal end of the dead lever assembly is attached to the frame. 
     
     
         7 . The brake assembly of  claim 6 , wherein the slack adjuster is coupled between the pair of live levers and the pair of dead levers. 
     
     
         8 . A brake assembly for a railway truck, the railway truck including a frame, the brake assembly comprising:
 a live lever assembly including a pair of spaced apart live levers;   a bracket rigidly coupled to the frame;   a slack adjuster disposed between the live lever assembly and the bracket;   a hanger lever disposed between the pair of live levers, the hanger lever pivotally coupled to the live levers;   a connecting terminal disposed on the slack adjuster, wherein the connecting terminal coupled to the hanger lever via a trigger rod; and   a brake shoe attached to the hanger lever.   
     
     
         9 . The brake assembly of  claim 8  engages a wheel of the railway truck. 
     
     
         10 . The brake assembly of  claim 8  further including a bracket rigidly coupled to the frame, the bracket disposed between the pair of live levers, the bracket comprising:
 an opening; and 
 a pair of holes supporting the hanger lever in the opening of the bracket. 
 
     
     
         11 . The brake assembly of  claim 8 , wherein the brake shoe is coupled to the hanger lever via a brake head. 
     
     
         12 . The brake assembly of  claim 8 , wherein the live lever assembly includes a proximal end and a distal end and wherein the slack adjuster is pivotally coupled to the distal end of the live lever assembly and the bracket. 
     
     
         13 . The brake assembly of  claim 12  further comprising an actuation system, the actuation system comprising:
 a pneumatic cylinder rigidly attached to the frame; 
 a crossover lever operatively connected to the pneumatic cylinder, the crossover lever pivotally coupled to the frame and the push rod; and 
 a push rod coupled to the proximal end of the live lever assembly and the crossover lever. 
 
     
     
         14 . A method of providing a brake assembly in a railway truck, the method comprising:
 arranging a pair of spaced apart dead levers;   arranging a pair of spaced apart live levers;   disposing the slack adjuster between the dead levers and the live levers;   pivotally coupling a hanger lever between the live levers;   attaching a trigger rod to the hanger lever; and   coupling a connecting terminal on a slack adjuster to the trigger rod.   
     
     
         15 . The method of  claim 14  further comprising disposing a bracket between the live levers. 
     
     
         16 . The method of  claim 14  further comprising disposing the hanger lever in an opening of the bracket. 
     
     
         17 . The method of  claim 16  further comprising attaching the hanger lever to the bracket via a locking bolt and a pin.