Through hypoid final drive

FIELD: transport.

SUBSTANCE: through hypoid final drive contains crank case (1) of reduction gear, drive collar (2) installed on drive shaft (3) and connected with center differential via gearing. Driving gear (4) is installed on drive shaft (3) and it is connected with driven gear (18) made as one whole with center differential cup (11). One semi-axle pinion (22) of centre differential is connected with driving hypoid gear (7) installed on tapered bearings (5) and (6). Other semi-axle pinion (21) of centre differential is connected with through shaft (25) of rear final drive horizontal axis of which is located below inter-wheel differential gear (26) axis via gearing. Driving gear (15) of gearing is connected with semi-axle pinion (21) and it is installed on bearings (16) and (17). Driven gear (23) is connected with through shaft (25) of rear final drive.

EFFECT: increase of service life of cardan shaft connecting through hypoid final drive with gear-box, increase of service life of hypoid drive.

2 cl, 3 dwg

 

The invention relates to the transport industry, in particular to reduced driving axles

Known anadromous main transmission containing the leading flange connected therewith center differential, one of the half-shaft gears which are connected with the cylindrical gear of three gears, one of which leading gear mounted on bearings located in the gear housing and the Cup differential, one driven gear fixed console on the host hypoid gear, and other additional driven gear (parasitic) meshed simultaneously with the leading and driven gears and mounted on bearings located in the crankcase (see H. W. Jaskiewicz. Leading bridges. - M.: Mashinostroenie, 1985, page 473, Fig. 8.20).

A disadvantage of the known constructions is the presence of additional guest (parasitic) gear, which has only one function - the transfer of torque from the driven gear to a host, resulting in reduced overall efficiency of the main transmission, and this leads to a loss of power transmitted to the main gear. In addition, you must use oil pump for forced lubrication of bearings located coaxially with the center differential.

Closest to the claimed technical solution is the gate g is Poiana main gear, containing the gear case, leading hypoid gear located on conical bearings, one of which is installed in the gear housing and the other in the glass, is fixed to the gear housing from the top of the cone hypoid gear, a leading flange mounted on the Cup center differential, one of the half-shaft gears which are connected with the leading hypoid gear, and the other is associated with reduced drive shaft rear main gear, a horizontal axis which is located below the axis of the transverse differential (see patent WO 2005047044, IPC7B60K 17/36, publ. 26.05.2005).

Known technical solution has the following disadvantages:

low durability of the propeller shaft connecting the checkpoint hypoid main transmission gearbox, due to the fact that the attachment point of the input of the master flange lock hypoid the main transmission is considerably below the point of attachment of the propeller shaft to the flange of the gearbox, the consequence is a significant angle between the forks of the propeller shaft, which leads to the increased load on the parts of the propeller shaft.

- low durability hypoid gearing due to the significant hypoid offset, causing increased sliding in engagement and, as a consequence, the rapid wear of the teeth of hypoid gears.

The task is make your decision which directed the claimed technical solution, is to increase the durability of the propeller shaft connecting the checkpoint hypoid main transmission gearbox, as well as increase the durability of the hypoid gear.

To solve the problem in passing hypoid main gear containing the gear case, leading hypoid gear located on conical bearings, one of which is installed in the gear housing and the other in the glass, mounted in the gear housing, the leading flange connected to the center differential, one of the half-shaft gears which are connected with the leading hypoid gear, and the other is associated with reduced drive shaft rear main gear, a horizontal axis which is located below the axis of the transverse differential, the other half-shaft gear center differential is associated with reduced drive shaft rear main transmission through the transmission gear, the leading gear which is connected with the specified polovoy gear and mounted on bearings located in the gear housing and leading hypoid gear and the driven gear is connected with a through drive shaft rear main gear, thus leading flange connected to the center differential through the transmission gear, top gear which is installed on the control shaft and connected with the driven gear, made the Oh in one piece with the Cup center differential, in addition, the glass with conical bearings is of the larger diameter of the hypoid gear and fixed in a casing with screws through the shims.

There is the following contradiction.

On the one hand, to increase the durability of the propeller shaft and hypoid transmission by reduction hypoid offset, but this is impossible, since in this case the lock drive shaft rear main gear will be set against the axis.

On the other hand, to increase the durability of the propeller shaft can also by reducing the angle between its forks by increasing the angle, main gear, but in this case much worse conditions lubrication of parts and components of the main transmission, which leads to premature wear and destruction, resulting in decreased reliability and durability of the lock main gear in General.

The claimed technical solution distinctive characteristics, which consists in the fact that the other half-shaft gear center differential is associated with reduced drive shaft rear main transmission through the transmission gear, the leading gear which is connected with the specified polovoy gear and mounted on bearings located in the gear housing and leading hypoid gear and the driven gear is connected through output shaft ol the water in the rear of the main transmission, reduce hypoid offset in the entrance of the main transmission, while ensuring the efficiency of the design.

A distinctive feature consists in the fact that the leading flange connected to the center differential through the transmission gear, top gear which is installed on the control shaft and connected with the driven gear, made in one piece with the Cup center differential, allows to reduce the distance between the fastening point of the input of the leading flange of the main transmission and the point of attachment of the propeller shaft to the flange of the box, which in turn decreases the angle between the forks of the propeller shaft and, consequently, decreases the load on the parts of the propeller shaft.

This set of essential features that characterize the created checkpoint hypoid main transmission enabled us to solve the conflict and thereby increase the durability of the propeller shaft connecting the checkpoint hypoid main transmission gearbox, and also to increase the durability of the hypoid gear.

Analysis of the known technical solutions in this field of technology has shown that the claimed technical solution has features that are missing in the analogs, and their use in the inventive combination of essential features allows you to get a new technical result, sledovat is Ino, the proposed solution meets the patentability requirements of "novelty" and "inventive step".

The proposed solution is illustrated by the drawings:

figure 1 - continuous hypoid main transmission, front view;

figure 2 - section A-a in figure 1;

figure 3 - gate hypoid main channel, side view.

Checkpoint hypoid main channel contains a crankcase 1 gearbox, a leading flange 2 mounted on the control shaft 3, which is pressed a leading cylindrical gear 4.

In the crankcase 1 on a tapered bearings 5 and 6 is the leading hypoid gear 7. The bearings 5 are installed in the crankcase 1 and the bearings 6 of the outer ring is pressed into the Cup 8, which screws through the shims 9 is fixed in the housing 1 from the side of the larger diameter of the hypoid gears 7.

In the crankcase 1 is the center differential, containing cups 10 and 11. The Cup 10 has elements 12 locking center differential and installed on the conical bearing 13 located in the crankcase 1, and the Cup 11 is installed on the bearing 14, based on the trailing portion of the cylindrical gear 15 of the rear main gear. Gear 15 mounted on a radial bearing 16, which is located in the crankcase 1, and the conical bearing 17 located at the leading hypoid gear 7. The Cup 11 done the on the in one piece with the driven gear 18, meshing with the leading cylindrical gear 4.

In the cups 10 and 11 installed crossbar 19, which freely rotate satellites 20, interacting with pausetime gears 21 and 22. Half-shaft gear 21 is connected by means of a slot with a cylindrical gear 15, and half-shaft gear 22 is connected with the leading hypoid gear 7.

Cylindrical gear 15 communicates with the driven cylindrical gear 23, which is situated on the bearings 24 mounted in the casing 1, and is connected through output shaft 25 of the rear main gear. The shaft 25 passes below the axis of the cross-axle differential 26, and means below and axis 27 and is connected with the output flange 28. Slave hypoid gear wheel 29 cross-axle differential 26 interacts with the leading hypoid gear 7.

Checkpoint hypoid main gear operates as follows.

Torque from the drive shaft that connects the entrance to the main transmission gearbox, is transmitted to the master flange 2, then the drive shaft 3 and leading the bevel gear 4, which rotates the cups 10 and 11 of the center differential. Next, the torque is transmitted to the cross-piece 19, which affects the satellites 20, thereby evenly distributing torque on the half-shaft gears 21 and 22. From polovoy gear 21 per rotation is given to the bevel gear 15, from which the torque is transmitted to the gear 23 and forth at the entrance of the shaft 25, which, in turn, rotates the output flange 28, the transmitting torque at the rear of the main transmission. Half-shaft gear 22 causes the rotation of the leading hypoid gear 7, which communicates with the slave hypoid wheel 29, which causes the rotation of the cross-axle differential 26 and axis 27.

The proposed solution allows to increase the durability of the drive shaft that connects the entrance to the main transmission gearbox, and also to increase the durability of the hypoid gear.

The claimed technical solution to meet the requirement of industrial applicability and possible to implement on standard manufacturing equipment.

1. Checkpoint hypoid main transmission containing the gear case, leading hypoid gear located on conical bearings, one of which is installed in the gear housing and the other in the glass, mounted in the gear housing, the leading flange connected to the center differential, one of the half-shaft gears which are connected with the leading hypoid gear, and the other is associated with reduced drive shaft rear main gear, a horizontal axis which is located below the axis of the transverse differential, characterized in that the other is olusia gear center differential is associated with reduced drive shaft rear main transmission through the transmission gear, leading gear which is connected with the specified polovoy gear and mounted on bearings located in the gear housing and leading hypoid gear and the driven gear is connected with a through drive shaft rear main gear, thus leading flange connected to the center differential through the transmission gear, top gear which is installed on the control shaft and connected with the driven gear, made in one piece with the Cup center differential.

2. Checkpoint hypoid main transmission according to claim 1, characterized in that the glass with conical bearings is of the larger diameter of the hypoid gear and fixed in a casing with screws through the shims.



 

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3 cl, 3 dwg

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