Safety exhaust brake

 

The invention relates to mechanical engineering, in particular to the brake mechanisms. Safety exhaust brake is further provided with a freewheel, the outer yoke which is made with wedge-shaped grooves under the rollers rigidly mounted to the bracket, connected to the lid of the output of the secondary shaft of the gearbox. On the rollers of the outer shroud installed movable ring with the outer ring gear. The drum is made together with the flange of the secondary shaft of the gearbox, on the cylindrical outer surfaces of which are cut gear which engages with a ring gear of the clutch, is arranged to mesh with a movable ring, module and number of teeth are identical. The end surface of the drum rigidly secure the flange of the propeller shaft, with mountain safety brake mounted on the transmission housing. The technical result is to increase reliability and safety. 2 Il.

The invention relates to mechanical engineering, in particular to the brake mechanisms.

Known Parking brake (ZIL-131 and its modifications. Technical description and operating instructions. - M.: Wainscote articulated based on one reference axis, fixed in the bracket of the brake. In the middle part of the pad rely base on the ledge of the bracket and held against lateral displacement by a washer mounted on the bushing and clamped by bolts. Snatch spring pressed Shoe resinosa knuckle and axle. On Rethimnon the fist set the adjustment lever attached to the rod of the actuator of the Parking brake. Drum brake with flange mounted on the splined end of the output shaft of the transfer case and fastened with a nut. To protect the brake from being hit by the oil in the bracket is the seal, the flap brake Assembly to the bracket.

However, during operation of the known brake due to friction, heat and friction losses of properties subjected to intensive wear of the friction brake lining, which reduces the reliability and safety in the mountains brakes in General.

The lack of automatic activation of the brakes, in turn, increases the time it sounds as structurally not provided in the known automatic control device enable.

The invention is directed to improving the reliability and bezopasnosti equipped with a freewheel, external holder which is made with wedge-shaped grooves under the rollers rigidly mounted to the bracket, connected to the lid of the output of the secondary shaft of the gearbox. On the rollers of the outer shroud installed movable ring with the outer ring gear. The drum is made together with the flange of the secondary shaft of the gearbox, on the cylindrical outer surfaces of which are cut gear which engages with a ring gear couplings with the possibility of engagement with a movable ring, module and number of teeth are identical. The end surface of the drum rigidly secure the flange of the propeller shaft, with mountain safety brake mounted on the transmission case.

The figure 1 presents the General scheme of the proposed mountain safety brakes on figure 2 - section a-A.

Safety exhaust brake holds the bracket 1, is rigidly bolted to the crankcase 2 transmission, the Central axis of which coincides with the axis of the secondary shaft 7. The drum 6 is fixed on the splined secondary shaft 7. In addition, it is further provided with a freewheel, the outer ferrule 3 which is made with wedge-shaped grooves under the rollers 4. The outer ferrule 3 is rigidly attached to the AOC is established with representation from the movable ring 5 with the outer ring gear 10. The drum 6 is made integral with the flange of the output shaft 7 of the gearbox, on the cylindrical outer surface of which is made gear 11 which engages with a ring gear clutch 9 can be disengaged from the movable ring 5. The end surface of the drum 6 is rigidly attached to the flange of the propeller shaft 8.

Safety exhaust brake works as follows.

When driving uphill torque is transmitted from the secondary shaft 7 of the gearbox via a splined connection to the drum 6, which is connected by a toothed coupling 9 with a movable ring 5. When this movable ring 5 is rotated on the rollers 4, established in the tops of the wedge-shaped grooves, freely. In the case of rolling back torque in the transmission changes its direction, which is transmitted from the flange 8 of the propeller shaft through bolt connection on the drum 6, which is connected by a toothed coupling 9 with a movable ring 5. This leads to jamming through the outer yoke 3 and the bracket 1 on the crankcase 2 transmission due to the movement of the rollers 4 in the narrow part of the wedge-shaped grooves, thereby preventing movement of the machine back. If necessary, the movement of the machine reversing should wivesfree to increase reliability at the expense of uderzhivaemoi car on steep slopes, as well as safe driving in mountainous conditions.

Claims

Safety exhaust brake includes a bracket rigidly bolted to the crankcase, the Central axis of which coincides with the axis of the secondary shaft, a drum rigidly mounted on the splines of the output shaft, characterized in that it further provided with a freewheel, the outer yoke which is made with wedge-shaped grooves under the rollers rigidly mounted to the bracket, connected to the lid of the output of the secondary shaft of the gearbox, while the rollers of the outer shroud installed movable ring with the outer ring gear and the drum is made integral with the flange of the secondary shaft of the gearbox, on the cylindrical outer surface of which is made gear, being in mesh with a ring gear couplings with the possibility of engagement with a movable ring, module and number of teeth are the same, and the end surface of the drum rigidly secure the flange of the propeller shaft, with mountain safety brake mounted on the transmission housing.

 

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