Kamaz car driveline

The driveline is used to transmit torque from the shaft of the gearbox or transfer case to the drive axle shaft of the vehicle at varying angles and distances between them.

On three-axle KamAZ vehicles, the torque to the intermediate and rear drive axles is supplied by one common shaft

From the intermediate axle, which is a through axle, the torque is transmitted to the rear axle by an additional cardan shaft.

Kamaz driveline

The cardan gear is designed to transmit torque to individual units and mechanisms (connection of the gearbox to the transfer case, winch drive, connection of the shaft and left column with the steering gear).

On cross-country vehicles with a driving front axle, the drive of the front steered wheels uses cardan joints of equal angular speeds.

Gimbal transmission device. The cardan gear consists of shafts and cardan joints.

All cardan drive joints consist of a fixed or sliding fork, a fork flange and a cross mounted in the ears of the forks on needle bearings.

The sealing of needle bearings is carried out by two oil seals and a radial seal oil seal built into the bearing cage and a two-lip mechanical seal oil seal.

When the drive fork rotates evenly, the driven fork rotates unevenly.

For one revolution of the propeller shaft, the driven fork, during rotation, overtakes the leading fork twice and lags behind it twice.

As a result, additional loads arise on the parts of the final drive, differential, axle shafts and wheels, and their wear increases.

To eliminate the uneven rotation of the driven shaft, a cardan transmission is used, in which cardan joints are installed at both ends of the shaft.

When installing the forks of both universal joints on the shaft in the same plane, the uneven rotation created by the first universal joint will be leveled by the second joint.

To reduce vibration, the cardan shaft assembly with cardan joints is dynamically balanced.

Imbalance is eliminated by welding the balancing plates or by installing them under the locking plate of the bolts for fastening the universal joint covers.

The cardan transmission of KamAZ-4310 and KamAZ-43105 vehicles with a 6X 6 wheel arrangement with a sequential through drive of the rear axles is shown in fig. 1.

It consists of four cardan shafts and the main shaft 2 between the gearbox and transfer case, the intermediate axle drive shaft 3 and the front axle drive shaft 1.

The intermediate axle has a through shaft of the main gear, which transmits torque to the rear drive axle through the cardan shaft 4.

Kardan Kamaz

In the design of cardan shafts (Fig. 1), a movable spline connection is used, which provides the necessary change in the working length of the shaft when the car is moving.

To protect the spline connection from dirt and grease retention, the cardan shafts are sealed at the joints.

The lubricant is kept in the internal cavity from flowing out by a plug rolled into the splined bushing, as well as by rubber and felt rings 10 and 8, which are pressed by the stuffing box nut 6.

The cardan shafts are assembled so that their fixed and sliding forks are located in the same plane.

For this purpose, arrows are embossed on the splined bushings of the cardan shafts and on the sliding forks. It is necessary that these arrows are aligned.

Balancing the cardan shafts of the front, intermediate and rear axles is carried out by welding balancing plates.

The main propeller shaft is balanced by placing balancing plates under the lock plate of the base plate mounting bolts on the forks.

Cam CV joint

In the drive to the front driving steered wheels of the front axles of KamAZ-4310 and KamAZ-43105 vehicles, cam-type cardan joints are used.

They transmit torques from the main gear to the front wheels, ensure the equality of the angular velocities of the side gears of the main gear of the front wheels when they turn at a significant angle.

The hinge consists of two fists 1 and 5 (Fig. 2) with liners 2, 4 and disk 3. The disk enters the grooves of the liners, which, in turn, are installed by cylindrical surfaces in the forks of the fists. Thanks to this connection, the hinge works like two articulated hinges of unequal angles.th speeds. In one plane, the forks rotate relative to the liners, and in the other, together with them relative to the central disk.