Double-range final drive

FIELD: transport.

SUBSTANCE: invention relates to wheeled vehicles. Proposed final drive comprises reduction gear case 1 and cover 2 with crown gear wheel 3 engaged via threaded elements 4. Case element axial zone has rolling bearing seats. Drive shaft runs in said bearings. Said drive shaft is made up of input shaft 5 and output shaft 6 whereon flange 9 is splined. Sun gear 12 is mounted at input shaft center while forward and underdrive gear throw-in clutch 13 with synchro unit 14 is fitted nearby output shaft end. Internal end of output shaft 6 supports three-pin pinion frame 18, its pins supporting pinions 18 running in bearings 17. Underdrive gear throw-in clutch 19 with synchro unit 20 is fitted at output shaft center.

EFFECT: longer life of planetary reduction gear, higher traction on drive wheels.

4 cl, 2 dwg

 

The invention relates to the field of engineering, in particular to the driven axles of vehicles, and can be used to change traction when powering low gear and ensure settlement (standard) torque enabling a direct transfer.

Two-speed main transmission, comprising a housing in the form of a casing with a cover connected by threaded elements, a drive shaft is divided into input and output rollers, made on the outer end of the output roller leading, bevel gear, planetary gear mechanism with the switch down and direct transmission with pneumatic actuator, the gear case and cover with the crown gear, performed with her at the same time or made as a separate element and is pressed therein, are connected with the provision of mutual centering and axial zone of the gear case and cover are seats for the bearings, which relies on the driving shaft, with the bearing installed in the seat of the gear housing, based output roller, and a bearing installed in the seat cover, input roller, the external input part which made slots and a threaded portion for mounting flange and the inner end portions of the input roller you Olsen thorn, for his connection with the bearing installed in a recess made in the end face of the inner part of the output roller, while in the middle of the input shaft, the cylindrical part thereof, in the plane of the crown gear, freely, with no limits axial movement by a shoulder and a snap ring installed in the groove of the input shaft, is mounted a sun gear, equipped with a conical slope for connection with a blocking ring of the synchronizer and gear ring for connection with the coupling hub switch downshift, and closer to the inner end portions of the input roller made slots, which establish, with the possibility of axial movement, the hub clutch switch down and direct transmission with synchronizers, and represents a cylindrical base with the slots on the inner surface and is made in the middle part of the disk with holes for fingers synchronizer, while on the inner end of the output roller is made similar to the splines that connect the input and output rollers by coupling direct transmission and installed a cylindrical ring with a tapered slope, which is the response part of the working area synchronizer direct transmission, which is fixed against axial movement shoulder and a retaining ring, and the cylindrical h is the tis output roller set three-beam led, with such a tapered slope, which is the response part of a blocking ring of the synchronizer and gear ring for connection with the hub of the clutch downshift, which is installed with the possibility of axial movement in the slots made in the middle part of the output roller, and the hub of each of the couplings provided with a synchronizer blocking rings which are located on both sides of the disk, and which are interconnected fingers passing through holes made in the disks, and on the cylindrical forming disks made guides that covered, with the possibility of sliding contact, the three legs arranged at an angle of 120° relative to each other and, in pairs, connected between each of the couplings by means of a rod passing through the guide bushing mounted in the rays of the drivers, all three stem connected with a ring switch, located behind the rays of the carrier and having sliding contact with the fork drive switching mechanism, rigidly connected with the drive shaft, which in turn, through two shoulders lever connected with leashes anchors forward and reverse electromagnetic actuators mounted in the housing, which is attached to privivochnoi plane performed on the body of the housing and the cover, however, at the ends of the rays took on thorns, through the bearings, such as rolling, installed satellites and the possibility of their engagement with the teeth of the crown wheel and sun gear.

However, the gear case and cover made of frame-composite method.

At the same time as element is applied to the hydraulic cylinder, and the working medium is oil lubrication system of the engine or transmission.

Could also be that as element applied pneumatic cylinder or pneumonia, and as a working body, gaty the air.

Description of the INVENTION

Known two-speed main transmission containing lead and the driven bevel gear, a shaft driven gear, which are, on bearings, cylindrical gear constant mesh with their toothed crowns of the coupling between them on the hub shaft mounted clutch shaft with the control mechanism, and a gear mounted on the differential case, axle (see utility model VC 17/16 "two-speed main transmission axle of the vehicle". Korsakov CENTURIES and D.R., "MAZ", No. 2006129068/11 from 10.08.2008).

The disadvantage of this design is the increased dimensions of the unit with a slave gear with two cylindrical gears, as well as the impossibility of gaining the gear ratios of the cylindrical transmission over 2.5 in low gear and the gear ratio, equal to 1 for direct transfer, without significantly increasing the dimensions of the beams of the bridge, reducing the permeability of the vehicle.

Also known two-speed main transmission containing a follower gear mounted in the housing of the differential, a leading bevel gear with shaft and bearings, housed in the casing, a planetary gear with a sun gear and shaft, a crown gear connected satellites, mounted on bearings on the shaft drove to the hub and the coupling and clutch control mechanism, and the cover (see patent 2321504 C1 EN, MCP VC 17/16 "two-speed main transmission bridge. Korsakov CENTURIES and D.R., "MAZ", No. 2006129068/11 10. 08. 2008).

The main disadvantage of this technical solution is the inability to ensure the immobility of the planetary gear when the direct transmission, the absence of a mechanism that provides smooth, shock-free switching gears, as well as the complexity of the kinematic scheme and the low reliability of the design, because it uses a large number of bearings.

The technical result of the proposed technical solution is to simplify the design and provision of immobility planetary gearbox for direct transmission and smooth, shockless inclusion programs.

This is achieved by the fact two-speed main transmission, comprising a housing in the form of a casing with a cover connected by threaded elements, a drive shaft is divided into input and output rollers, made on the outer end of the output roller leading, bevel gear, planetary gear mechanism with the switch down and direct transmission with pneumatic actuator, the gear case and cover with the crown gear, performed with her at the same time or made as a separate element and is pressed therein, are connected with the provision of mutual centering and axial zone of the gear housing and the cover are seats for the bearings, which relies on leading the shaft, with the bearing installed in the seat of the gear housing, based output roller, and a bearing installed in the seat cover, input roller, the external input part which made slots and a threaded portion for mounting flange and the inner end portions of the input roller is made of thorn, for his connection with the bearing installed in a recess made in the end face of the inner part of the output roller, while in the middle of the input shaft, the cylindrical part thereof, in the plane of the crown gear, freely, with no limits axial movement by flange and retaining ring to be installed is in the groove of the input shaft, mounted a sun gear, equipped with a conical slope for connection with a blocking ring of the synchronizer and gear ring for connection with the coupling hub switch downshift, and closer to the inner end portions of the input roller made slots, which establish, with the possibility of axial movement, the hub of the clutch switch and reducing the direct transmission with synchronizers, and represents a cylindrical base with the slots on the inner surface and is made in the middle part of the disk with holes for fingers synchronizer, while on the inner end of the output roller is made similar to the splines that connect the input and output rollers by coupling direct transmission and installed a cylindrical ring with a tapered slope, which is the response part of the working area synchronizer direct transmission, which is fixed against axial movement shoulder and a retaining ring, and the cylindrical part of the output roller set three-beam led, with a similar conical slope, which is the response part of a blocking ring of the synchronizer and gear ring for connection with the hub of the clutch downshift, which is installed with the possibility of axial movement in the slots made in the middle part of the output of the CSOs roller, while the hub of each of the couplings provided with a synchronizer blocking rings which are located on both sides of the disk, and which are interconnected fingers passing through holes made in the disks, and on the cylindrical forming disks made guides that covered, with the possibility of sliding contact, the three legs arranged at an angle of 120° relative to each other and, in pairs, connected between each of the couplings by means of a rod passing through the guide bushing mounted in the rays of the drivers, all three stem connected with a ring switch, located behind the rays of the carrier and having a sliding the contact plug with a drive switching mechanism, rigidly connected with the drive shaft, which in turn, through two shoulders lever connected with leashes anchors forward and reverse electromagnetic actuators mounted in the housing, which is attached to privivochnoi plane performed on the body of the housing and the cover, however, at the ends of the beams drivers, on thorns, through the bearings, such as rolling, installed satellites and the possibility of their engagement with the teeth of the crown wheel and sun gear.

A distinctive feature may be that the crown gear is made as a separate element and is pressed into the housing cover.

However, the gear case and cover made of frame-composite method.

At the same time as element is applied to the hydraulic cylinder, and the working medium is oil lubrication system of the engine or transmission.

Could also be that as element applied pneumatic cylinder or pneumonia, and as a working body, gaty the air.

1 shows a General view of a two-speed main transmission section, figure 2 shows a schematic of the transmission of torque.

Two-speed main transmission includes a housing in the form of a gear housing 1 and the cover 2 with the crown gear wheel 3, connected with the possibility of mutual centering by means of threaded elements 4, in the axial zone of hull elements are made seats for the bearings that support the drive shaft divided by the input roller 5 and the output roller 6. The bearing 7 mounted in the seat of the gear housing, based output roller 6, and the bearing 8 mounted in the seat cover, input roller 5, the external output part which, on the splines, install the flange 9, which is fixed by a nut, and at the end of the inner part is made of thorn through which the said roller rests their is I on the bearing 10, mounted in a recess made in the end face of the inner part of the output roller 6. In the middle of the input roller 6, in the plane of the crown gear 3, freely, with no limits axial movement by the flange and retaining ring 11, is mounted a sun gear 12 with a tapered slope and a ring gear, which is made on the hub and towards the end of the internal parts of the machine, slots, install the clutch 13 enable direct and reducing transmission, which is equipped with a synchronizer 14. On the inner end of the output roller 6, on the slots, installed cylindrical ring 15 with a tapered slope fixed by flange and retaining ring, which, on the cylindrical portion of the roller 6, is mounted a three-beam led 16, on thorns rays which, on bearings 17, installed the satellites 18. In the middle part of the output roller 6, on the slots, installed the clutch 19 enable downshift, equipped with a synchronizer 20. Each of the couplings is in sliding contact with the three legs 21, each pair of legs 21 of the opposite couplings are connected in pairs between the rods 22 passing through the guide bushing mounted in the rays of the carrier and secured in the ring switch 23, which is in sliding contact with the plug 24 of the drive switching mechanism, rigidly connected with the drive shaft 25, which h is cut two shoulders lever 26 is connected with the leads of the armatures of the electromagnets forward and reverse, electromagnetic actuator 27 that has a return spring 28.

Two-speed main transmission works as follows. When driving on a straight transfer torque, connected to the flange 9 through the slots into the input roller 5 and then through the clutch 13 enable direct and a reduction gear, an output roller 6, a leading bevel gear which is engaged with the driven toothed wheel gear. This planetary gear remains stationary. In the diagram (a) figure 2 shows a diagram of the passing torque on direct transmission.

If necessary, switching to a lower gear control voltage is supplied to the electromagnetic actuator 27, the anchor of which moves to the left, and two shoulders of the lever 26 will move the drive shaft 25 together with the fork 24 of the drive switching mechanism to the right, shifting the ring switch 23 with the rod 22 and secured to them by the legs 21 in the same direction. Together with the legs 21 will move both of the clutch, and the clutch 19, the inclusion downshift, move to the entry in the engagement of the teeth located on the clutch 19 and the end of the carrier 16, and the clutch 13 enable direct and reducing transmission will move to interacting toothed crowns, located on the hub of the clutch 13 and the sun gear 12. For ensuring the Oia unstressed include initially in contact with their conical rays includes blocking rings with mating conical rays, performed at the hub of the sun gear 12 and the basis of the three-beam carrier 16. This helps to ensure alignment of angular velocities between the elements entering into the engagement. Torque to be transmitted from the flange 9 on the shaft 6 and through the sleeve 13, the inclusion of direct and reducing gear, the sun gear 12, and then through toothed sun gear 12 and satellites 18, a three-beam led 16. With a three-beam carrier 16 to the clutch 19 enable downshift and then to output the platen 7. In the diagram b) figure 2 shows a diagram of the passing torque in low gear.

If necessary, the transition to the direct transfer control voltage is removed from the winding of the solenoid drive forward stroke 27, is supplied to the coil of the electromagnetic actuator reverse, with return spring 28 is involved in the movement of anchors electromagnetic actuator 27 to the right, and two shoulders of the lever 26 will move the drive shaft 25 together with the fork 24 of the drive switching mechanism to the left, shifting the ring switch 23 mounted on them by the rod 22, the legs 21 and moves the clutch 19 enable downshift to the left that will bring it out of engagement with a ring gear, which is made on the three-beam hub carrier 16, and the clutch 13 enable a reduction and direct transmission will move up in the of an unforgettable engages gear performed at the hub of the clutch 13 and the slots on the inner end of the output roller 6.

Thus, this solution allows to obtain increased traction on the drive wheels, in low gear, to ensure shock-free and smooth gear shifts, and allows the planetary gear to remain stationary when the direct transmission.

1. Two-speed main transmission, comprising a housing in the form of a casing with a cover connected by threaded elements, a drive shaft is divided into input and output rollers, made on the outer end of the output roller leading bevel gear, planetary gear mechanism with the switch down and direct transmission with pneumatic actuator, characterized in that the gear case and cover with the crown gear, performed with her at the same time or made as a separate element and is pressed therein, are connected with the provision of mutual centering and axial zone of the gear housing and the cover are seats for bearings which supports the driving shaft, with the bearing installed in the seat of the gear housing, based output roller, and a bearing installed in the seat cover, input roller, the external input part which is ispolneny slots and a threaded portion for mounting flange, and at the end of the inner portions of the input roller is made spike for his connection with the bearing installed in a recess made in the end face of the inner part of the output roller, while in the middle of the input shaft, the cylindrical part thereof, in the plane of the crown gear wheel freely to limit axial movement by a flange and snap ring installed in the groove of the input shaft, is mounted a sun gear, equipped with a conical slope for connection with a blocking ring of the synchronizer and gear ring for connection with the coupling hub switch downshift, and closer to the inner end portions of the input roller made slots, which establish with the possibility of axial movement of the hub clutch switch down and direct transmission with synchronizers, and represents a cylindrical base with the slots on the inner surface and is made in the middle part of the disk with holes for fingers synchronizer, while on the inner end of the output roller is made similar to the splines that connect the input and output rollers by coupling direct transmission, and installed a cylindrical ring with a tapered slope, which is the response part of the working area synchronizer direct transmission, which is fixed against axial movement C the shoulders and retaining ring, and on the cylindrical part of the output roller set three-beam led with a similar conical slope, which is the response part of a blocking ring of the synchronizer and gear ring for connection with the hub of the clutch downshift, which is installed with the possibility of axial movement in the slots made in the middle part of the output roller, and the hub of each of the couplings provided with a synchronizer blocking rings which are located on both sides of the disk and which are interconnected fingers passing through holes made in the disks, and on the cylindrical forming disks made guides that are covered with the possibility of sliding contact of three feet, arranged at an angle of 120° relative to each other and United in pairs between each of the couplings by means of a rod passing through the guide bushing mounted in the rays of the drivers, all three stem connected with a ring switch, located behind the rays of the carrier and having sliding contact with the fork drive switching mechanism, rigidly connected with the drive shaft, which, in turn, through two shoulders lever connected with leashes anchors forward and reverse electromagnetic actuators mounted in the housing, which is attached to privivochnoi plosko and, performed on the body of the housing and the cover, however, at the ends of the rays took on the spikes through the bearings, such as rolling, installed satellites and the possibility of their engagement with the teeth of the crown wheel and sun gear.

2. Two-speed main transmission according to claim 1, characterized in that the gear case and cover made of frame-composite method.

3. Two-speed main transmission according to claim 1, characterized in that as the element applied to the hydraulic cylinder, and the working medium is oil lubrication system of the engine or transmission.

4. Two-speed main transmission axle according to claim 1, characterized in that as the element used pneumatic cylinder or pneumonia, and the working medium is compressed air.



 

Same patents:

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FIELD: machine building.

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FIELD: machine building.

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2 dwg

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FIELD: transport engineering.

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FIELD: transport engineering; automobiles, tractors, diesel locomotives.

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1 dwg

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1 dwg

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1 dwg

FIELD: mechanical engineering; road vehicles.

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1 dwg

FIELD: transport mechanical engineering.

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EFFECT: expanded functional capabilities.

2 dwg

FIELD: mechanical engineering.

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2 dwg

FIELD: transport and agricultural engineering.

SUBSTANCE: proposed driving axle has housing, drive shaft, final drive in form of drive pinion and driven gear, differential case central hole fitted on bearings in housing and rigidly connected with driven gear, two driven shafts with screw thread, member movably connecting driven shafts by meshing with screw thread through solids of revolution and passing through central hole of differential case coaxially with case for axial displacement in said hole, and springs. Cavities, for instance, semi-spherical ones, are made in central cylindrical hole of differential case. Connecting member is made in form of cylindrical bushing on outer surface of which longitudinal grooves are made, for instance, with semispherical bottom, parallel to its axis, and on ends of inner surface cavities are made, for instance, semispherical ones. Ends of driven shafts from side of differential case are provided with outer thread and are installed in bushing for rotation. Bushing can be displacement both relative to differential case by means of solids of revolution, for instance, balls installed by one half in cavities of inner cylindrical surface of differential case and by other half, in longitudinal outer grooves of bushing and relative to driven shafts, by means of solids of revolution, for instance, balls installed in cavities of bushing and contacting with thread of driven shafts. Driven shafts are provided with stops to limit travel of bushing along driven shaft made, for instance, in form of beads on shafts and coil springs placed between beads and end faces of bushing. Cavities are made on end faces of driven shafts arranged inside differential case in which solids of revolution, for instance, balls are fitted.

EFFECT: simplified design, operation and repair of driving axle improved efficiency of its operation.

3 cl, 3 dwg

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