在工程机械和汽车的传动装置中，由于总体布置上的需要，都要用到万向传动装

In the transmission devices of construction machinery and automobiles, universal transmission devices are used due to the needs of the overall layout. Its function is mainly to transmit power between the two shafts that are not concentric or have a certain included angle, and transmit power between the two shafts whose relative positions are constantly changing during work. The universal transmission device is generally composed of a universal joint and a drive shaft, and sometimes has an intermediate support, which is mainly used in the following positions: <br>between the transmission and the drive axle of a car with front-engine and rear-wheel drive. When the distance between the transmission and the drive axle is long, the drive shaft should be divided into two or more sections, and an intermediate support should be added. <br>A universal joint is a part that realizes variable-angle power transmission and is used where the direction of the transmission axis needs to be changed. The drive shaft is one of the components of the universal transmission device. This kind of shaft is generally long in length and high in speed; and because the relative position between the connected parts (such as the gearbox and the drive axle) changes frequently, the length of the drive shaft is required It must be changed accordingly to ensure normal operation, which requires the use of sliding spline pairs. The sliding spline pair is composed of inner and outer splines, and the telescopic movement between the sliding pairs realizes the distance change during operation, and is used to transmit the change of the length.

In the transmission of construction machinery and automobiles, the 10,000-way transmission device is used because of the need of the overall arrangement. Its function is mainly to transmit power between the two axes with different hearts or with a certain angle, and to transmit power between the two axes, which are constantly changing relative to each other in their work. The 10,000-way drive is generally composed of a 10,000-way joint and a drive shaft, sometimes with intermediate support, mainly used in the following locations:<br>Between the transmission and the drive bridge of the engine front rear-wheel drive car. When the transmission is far away from the drive bridge, the drive shaft should be divided into two or even more segments with an intermediate support.<br>The wand is a machine that enables variable-angle power transfer where a change in the direction of the drive axis is required. The transmission shaft is one of the components of the 10,000-way transmission device, which is generally long in length and high in speed. And because the relative position between the connected components (e.g. transmission and drive bridge) often changes, the length of the drive shaft is required to change accordingly to ensure normal operation, which requires the use of sliding flower keys. Sliding flower key sub is composed of inner and outer flower key, and the telescopic motion between sliding pairs at work achieves distance change, which is used to pass the length change.

In the transmission of engineering machinery and automobile, universal drive device is needed because of the general arrangement. Its function is mainly to transfer power between two shafts which are not concentric or have a certain angle, and transfer power between two shafts which change constantly in relative position in the work. Universal drive device is generally composed of universal joint and transmission shaft, sometimes with intermediate support, mainly used in the following positions:<br>The transmission of the engine front rear wheel drive vehicle to the drive axle. When the distance between transmission and drive axle is far, the transmission shaft shall be divided into two or more segments, and the intermediate support shall be added.<br>Universal joint is a machine which can transfer power with variable angle, and is used to change the direction of transmission axis. The transmission shaft is one of the components of universal drive device. The shaft is generally long and has high speed. Because the relative position between the connected parts (such as transmission and drive axle) often changes, the length of the transmission shaft should also be changed correspondingly to ensure normal operation, so sliding spline pair is required. The sliding spline pair is composed of internal and external splines. The expansion movement between sliding pairs can realize the distance change during operation, which is used to transfer the change of length.<br>