3results about How to "Axial dimensions are compact" patented technology

The invention relates to an electrically-driven two-gear speed reducer and a control method thereof. The two-gear speed reducer comprises an input shaft, a first-stage speed reduction gear set, a sun gear control shaft, a clutch, a brake, an NGW type planetary gear set, a third-stage speed reduction gear set and an output shaft. Wherein the primary reduction gear set comprises an input driving gear and an input driven gear; the NGW type planetary gear set comprises a sun gear, a planet gear, a gear ring and a planet carrier; the three-stage reduction gear set comprises an output driving gear and an output driven gear. A speed reducer formed by combining a parallel shaft speed reduction gear set and an NGW type planetary gear set has two driving gears, is free of power interruption in the gear shifting process and has a neutral gear and a parking gear; and meanwhile, the axial size is more compact. The adopted NGW type planetary gear set is the optimal choice in numerous planetary gear mechanisms, and is high in efficiency, small in size, simple in structure, convenient to manufacture and wide in application.

This invention relates to a modular electric drive axle system and a vehicle. The system includes a main housing, a first housing, a second housing, a differential, a first drive module, and a second drive module. The first housing and the second housing are detachably connected to the left and right sides of the main housing, respectively. The differential is disposed within the main housing. The first drive module is disposed within the first housing and includes a first motor and a first transmission system connected to the first motor. The second drive module is disposed within the second housing and includes a second motor and a second transmission system connected to the second motor. The first transmission system and the second transmission system are respectively connected to the differential. The first drive module and the second drive module are structurally independent and can independently cooperate with the main housing to form a single-motor electric drive axle system, or cooperate together with the main housing to form a dual-motor electric drive axle system.

The present invention relates to an elastically mounted shaftless thruster that can be disassembled and maintained in a wet dock. The two ends of the cylinder are cylinders, and the middle is a U-shaped cylinder for arranging a shaftless propeller. The two axial ends of the U-shaped cylinder provide support for the support members of the shaftless propeller through a plurality of U-shaped seats respectively; the upper end of the shaftless propeller is connected to the upper end of the U-shaped cylinder and the cover plate of the cylinder through an elastic sealing mechanism. The cylinders on both sides of the cylinder are connected to the target ship tunnel cylinder by welding. The present invention replaces the traditional thruster with a shaftless thruster, and solves the problem of high vibration and noise of the thruster with an elastic connection method; at the same time, the advantage of the compact axial size of the shaftless thruster is used to solve the problem of limited installation space; and a detachable + sealing design is used to solve the problem of inconvenient disassembly and maintenance of the thruster. It only needs to ensure that the waterline is not higher than the tunnel cylinder to disassemble and repair the thruster, and can continue to perform navigation tasks that do not require a thruster function.