SU1572840A1 - Motorized wheel - Google Patents

Abstract

This invention relates to machine drives and can be used in mobile transmissions. The purpose of the invention is to increase durability and reliability when changing gears, simplifying the design and reducing the axial dimension. The motor wheel contains a drive motor 3, a planetary gear 4, including sun gears 5 and 6, equipped with cam coupling halves 9 and 10 at the ends, a shaft 7 connected to the engine 3 with axial displacement, equipped with two coupling halves 8 fixed on the shaft, an axial movement mechanism of the shaft 7. Between the axial movement mechanism of the shaft and the shaft 7 there is an elastic, previously pressed-up, double-acting element 14 connected to them. The coupling halves 9 and 10 are made on the inner ends of the sun gears 5 and 6 with respect to the transmission, and the coupling halves 8 fixed on the shaft are placed between the sun gears 5 and 6 with their combination into one element. 1 il.

Description

This invention relates to machine drives and can be used in mobile powertrain transmissions.

The purpose of the invention is to increase durability and reliability when shifting gears, simplifying the design and reducing axial ga-. h

The drawing shows a motor-wheel, a general view.

The motor wheel contains axis 1, step 2j mounted on the axis by means of bearings, drive motor 3, fixed on axis 1, planetary gear 4, including sun gears 5 and 6, shaft 7 on which the double-sided half coupling 8 is rigidly fixed At the ends of the estern 5 and 6 are cam claws 9 and 10 respectively.

The axial movement mechanism of the shaft 7 is made in the form of a double-sided hydraulic cylinder consisting of a piston 11 and an axis 1, which is its body provided with channels for supplying fluid to the chambers 12 and 13 of the hydraulic cylinder. The piston 11 is connected to the shaft 7 through an elastic, pre-loaded element 14.

The motor-wheel works as follows.

Depending on the required gear ratio, when the driven engine is stopped, the fluid Bone is supplied to one of the hydraulic reservoir chambers, for example 12. Under the pressure of the liquid, the piston 11 is displaced to the left and acts on the shaft 7 through the pre-compressed elastic element 14.

If the protrusions of the half couplings 9 and 8 are completely displaced relative to each other, the coupling closes; if not, the projections abut against each other and no closure occurs. But at the same time, the piston 11 is displaced by the compression of the element 14 by the full amount of the working stroke.

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When moving the motor shaft 3, there is always a complete displacement of the projections of the coupling halves and, due to the energy accumulated during the additional, apart from preliminary preload, deformation of the elastic element 14, the coupling halves quickly close.

The torque from the engine is transmitted through the shaft 7 and the clutch to the sun gear 5 and then through the planetary gear to the hub 2, driving the wheel of the machine. If it is necessary to change the gear ratio of the transmission 4, the machine stops and the fluid is supplied to the opposite chamber of the hydraulic cylinder.

Claims (2)

1. Motor wheel containing a drive motor, a planetary gear. Chu} including sun gears equipped with cam clutch halves at the ends, the shaft connected to the engine with the possibility of axial movement, equipped with two coupling halves rigidly mounted on the shaft, the mechanism of axial movement of the shaft, characterized in that, in order to increase durability and reliability during gear shifting, simplify the design and reduce axial clearance, An elastic, previously preloaded double-acting element is installed between the shaft moving mechanism and the shaft, while the coupling halves are made on the ends that are internal to the gear unit sun gears, while the half couplings, mounted on the shaft, are placed between the sun gears, i 2. Motor-wheel pop. 1, characterized in that the coupling halves mounted on the shaft are combined into one element.