RU24974U1 - POWER TAKE-OFF BOX FROM ENGINE - Google Patents

Description

2002102662

II || iii iiiH Mill lull mil “HI Mill nini Ov ix 1 // Zo

j ili

iO 0 21 0 Z 6 «2

Power take-off from engine.

The utility model relates to transport engineering, namely: devices for power take-off to drive additional units.

Based on the set of essential features, the design of a power take-off (COM) from the engine, located between the clutch housing and the gearbox (gearbox) of the vehicle, was chosen for the prototype. This KOM contains: a crankcase attached to the clutch housing and to the gearbox housing; hollow drive shaft, made integral with the drive gear and spline part connected to the drive disk, equipped with damper springs. The drive disc is fixedly attached to the clutch cover, which, in turn, is fixedly connected to the flywheel of the engine crankshaft. The KOM drive shaft is mounted on two bearings, one of which is installed in the KOM crankcase, and the other bearing is mounted on the gearbox input shaft located inside the KOM hollow drive shaft. The KOM drive gear is engaged with an intermediate gear rotating on bearings mounted on an axis pressed into the crankcase. The intermediate gear is engaged with the driven gear mounted on the drive shaft of the friction clutch. The drive shaft of the friction clutch passes

inside the drive shaft and connected to it through a multi-plate friction clutch. The clutch engagement mechanism is hydraulic. It includes: an oil pump, a hydraulic distributor, and other hydraulic devices necessary for the operation of the fluid coupling. (See ZF company brochure, Germany. Fig. H) Power is taken directly from a running engine, regardless of the drive train links that can be turned on or off. A flange for power take-off is installed on the splines of the driven clutch shaft.

The disadvantages of the well-known KOM: the complexity of the design of the mechanism of inclusion with a hydraulic drive, as well as the location of one of the supports of the hollow drive shaft on the input shaft of the gearbox passing inside the drive shaft KOM. As a result of the application of this arrangement, during operation of the PTO, additional bending forces are transmitted to the gearbox input shaft, which reduces the resource of its operation.

The task was set - to design a power take-off from the engine with a simpler gear mechanism and unload the input shaft of the gearbox from additional loads.

The problem is solved due to the fact that in the power take-off from the engine, located between the engine and gearbox, the hollow drive shaft with the drive gear is mounted on two spaced bearings (bearings) installed in the crankcase, and the drive gear

It is located between the supports, and the power take-off switching mechanism from the KOM driven shaft is made in the form of a controlled gear clutch.

When analyzing the level of technology for patent and other scientific and technical documentation, an analogue characterized by features identical to all the essential features of the claimed technical solution was not identified. Therefore, it meets the criterion of “novelty.

A comparative analysis of the proposed technical solution and the analogue made it possible to establish the presence of significant distinguishing features, allowing to obtain the claimed technical result.

The claimed technical solution is illustrated by drawings, where:

figure 1 - shows the power take-off from the engine with an attached hydraulic pump;

FIG. 2- shows a variant of KOM with a flange output shaft;

Fig.Z- shows a power take-off from a ZF engine, Germany - a prototype.

The power take-off box from the engine comprises: a drive disk 1 attached to the clutch casing 2; the disk is connected by a spline part to the spline part of the hollow drive shaft 3, made integral with the drive gear 4. The hollow drive shaft is mounted on two spaced bearings 5 and 6 located in the housing 7. The drive gear 4 is engaged with an intermediate gear 8 mounted on the axis 9 on two bearings 10. The intermediate gear is engaged with the driven gear

11, made integral with the driven shaft 12 mounted on bearings 13 and 14. On the splined end of the driven shaft 12, a gear sleeve 15 is fixedly mounted on which a gear sleeve 16 is movably mounted in the axial direction; the movement of this clip is carried out by the pneumomechanism 17, the driven gear sleeve is mounted on the driven shaft of the hydraulic pump 18 (Fig. 1) or is made integral with the output shaft 19 (Fig. 2).

The output shaft 19 is mounted on bearings 20. A flange 21 is mounted on its splined end to connect the drive of any working tool.

COM works as follows:

Torque from the crankshaft is constantly transmitted to the drive disk 1, attached to the clutch casing 2. The disk is connected by a splined part with a hollow drive shaft 3 made integral with the drive gear 4, which engages with the intermediate gear 8. The intermediate gear 8 is engaged with the driven gear 11, made integral with the driven shaft 12. The drive of the working body is carried out from the output element KOM which is connected to the driven shaft using a controlled gear clutch.

Power take-off is carried out directly from a running engine, regardless of the transmission.

Claims (1)

A power take-off box from the engine, located between the engine and the gearbox, comprising: a crankcase, a drive disk with a damper, a hollow drive shaft with a drive gear connected to a drive disk, an intermediate gear, a driven gear, a driven shaft and a switching mechanism, characterized in that the hollow drive shaft has two spaced bearings (bearings) installed in the crankcase of the power take-off (KOM), and the drive gear is located between the supports, and the power take-off from the output shaft of the KOM nen in the form of a controlled gear coupling.