Gear torque

 

(57) Abstract:

Usage: engineering. The inventive mechanism includes a planetary gear reducer, a friction clutch and an overrunning roller clutch. Drove gearbox is connected to the friction clutch. The sun gear reducer performs the function of the shroud overrunning roller clutch. Leading the discs of the friction clutch is connected with a sprocket wheel overrunning roller clutch. Pressure disc overrunning roller clutch is made in the form of a piston placed in the annular bore of the housing of the friction clutch. 1 C.p. f-crystals, 1 Il.

The invention relates to mechanical engineering and can be used in the mechanisms of transmission of torque in excavators, tractors, cranes and other machines.

Known gear torque, containing the pinion shaft which is movably fixed wheel disks of the clutch and the fixed carrier of the planetary gear, with satellites which engages crown gear pinion shaft and on the hub installed overrunning roller clutch [1]

The disadvantage of this mechanism is that the outer race overrunning roller MOFCOM and as a consequence of their rapid deterioration.

In addition, the inclusion of the clutch is performed by iterative lever-hinge system, which is subject to abrasive wear and transmits the axial load on the bearings of the planetary reducer, reducing the lifetime of their work.

Closest to the claimed solution is the gear unit torque [2] contains a planetary gear with leading a crown gear, which drove through the disk friction clutch is connected with a sun gear. The sun gear has a well-developed hub, made in the form of stars overrunning roller clutch outer ring which is rigidly connected with the fixed body.

This construction has the following disadvantages: the crown gear is a leading link, that when the timing mechanism in the mode of the gearbox leads to lower efficiency; coaxial arrangement of the drive shaft, hub and sun gear complicates the manufacture and Assembly of the mechanism; since the torque in the planetary gear is transmitted from the crown gear to the cage, the overrunning roller clutch becoming jammed sun gear, perceives torque, increased gears planetary ed the and mechanism.

The invention is characterized by the following set of essential features.

Gear torque contains a planetary gear mixed gearing. Carrier of the planetary gear is connected with a friction clutch, wheel disks which are connected with a sprocket wheel overrunning roller clutch and sun gear acts as a shroud overrunning roller clutch. The crown gear is fixed.

In the case of the friction clutch is made of inner ring bore, in which is placed a piston that serves as a pressure disk friction clutch.

The proposed solution differs from the prototype in that the crown gear is stationary, leading the discs of the friction clutch is connected with a sprocket wheel overrunning roller clutch and sun gear acts as a cage roller clutch.

In the inner ring bore of the housing of the friction clutch is placed a piston that serves as a pressure disk friction clutch.

Due to the fact that the asterisk overrunning clutch rollers is placed in the bore of the flange solar chesteraaaar detail nazaruddin.

The location of the overrunning roller clutch automatically provides a mechanical connection of the drive sprocket shaft of the engine even in the event of an emergency stop the flow of air in the pneumatic cylinder of the clutch, which ensures the reliability of the mechanism.

As the roller overrunning clutch zakladivaetsa between the fixed sprocket wheel and yoke, jamming occurs more slowly, which increases the service life of the mechanism.

The engine torque transmitted by the shaft, gears on overrunning roller clutch, not reinforced planetary gear, so the clutch is operating in the power saving mode, which increases the life of her work.

Constructive performance overrunning roller clutch and its location provides ease of maintenance, improves reliability and increases the service life of the transmission mechanism of torque.

The invention is illustrated in the drawing.

Gear torque includes a housing 1 in which the bearing is located asterisk 2, rigidly connected with the planet carrier 3.

On the axes 4 led 3 are 5 satellites included in engagement with the crown gear 6 and the practical boring, generatrix in contact with the rollers 8 and the sprocket 9 overrunning roller clutch and the sprocket 9 by means of the fingers 10 are rigidly connected with the leading disk 11.

Driven disks 12 with the leading disk 11 forms a friction clutch, a housing 13 which is rigidly connected to the axis 4. The housing 13 is closed by a cover 14, which serves as a support disk friction clutch. In the housing 13 has an internal annular bore with the piston 15. The outer flange 16 of the housing 13 serves as a stopping brake. Gear shaft 17 mounted in aligned bearings of the sprocket 2 and the sun gear 7. Gear shaft 17 is connected by means of the ring gear 18 with the cylinder main clutch (not shown).

Gear torque is as follows.

Torque from the main clutch through the crown gear 18 is transmitted to the shaft-gear 17 and rigidly connected with it the sprocket 9 overrunning clutch.

At the same sprocket 9 simultaneously rotating wheel disks 11 mounted on the sprocket 9 10 fingers. The piston 15 under the influence of compressed air compresses the package of the slave disk 12 and the leading disk 11, resulting in the housing 13 starts the rotation is related to the sprocket 2.

The sun gear 7, the receiving rotation from satellites 5, no jams with a sprocket wheel 9 through the rollers 8, because it has a greater angular velocity and, thus, does idling.

If under the piston 15 is not supplied with compressed air, the housing 13 of the friction clutch does not receive rotation from the input drive shaft 17. Through the sprocket 9 rotation with the input drive shaft 17 is transmitted to the rollers 8 and they zakladivaetsa in the bore a sun gear 7.

As a result, the rotation of the sprocket 2 is transmitted via the planetary gear. In this case, the asterisk 2 receives the rotation, unidirectional rotating gear shaft 17, but with torque increased as a result of its transmission through a planetary reducer.

Thus, the gear torque allows you to get on the sprocket 2 two unidirectional rotation speed.

The use of such a mechanism in lifting devices, such as crane, allows you to lower the load at a speed lower speed of his ascent at the time of the change of direction is not interrupted gearing gear, which increases the reliability of the lifting machine.

1. Top gear is vtorogo connected to the friction clutch, and overrunning roller clutch, the rollers of which are intended for engagement with a sun gear of the planetary gear reducer, wherein the crown gear of the planetary gear reducer is stationary, leading the discs of the friction clutch is connected with a sprocket wheel overrunning roller clutch and sun gear acts as a shroud overrunning roller clutch.

2. The mechanism under item 1, characterized in that the housing of the friction clutch made of the inner ring bore and the pressure plate of the friction clutch is designed as a piston placed in the annular bore.

 

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