SU1209962A1 - Gear box synchronizer (its versions) - Google Patents

Abstract

1. Synchronizer gearbox containing a hub with grooves on the ends, a carriage with locking chamfers mounted on the hub with the possibility of axial movement, locking rings with protrusions placed in the grooves of the hub with a gap between one of the side surfaces of the protrusion and one of the side walls of the groove, and with interlocking chamfers, interoperable with the interlocking chamfers of the carriage, and springs located in tangential holes, characterized in that, in order to reduce metal consumption and simplify the construction, the protrusions of the blocking rings are located with contact between their second side surfaces and the second side walls of the grooves, the tangential holes are made deaf and are located in the protrusions of the blocking rings on the side of their second side surfaces, and the springs are installed with contact with the first side walls of the grooves in pre-compressed state, while the second side walls of the grooves are located opposite to the direction of the moment of friction synchronization. (L y o x with O5 GhE

Description

2. Synchronizer transmission containing hub, carriage with locking chamfers mounted on the hub with the possibility of axial movement, locking rings with protrusions placed in the grooves of the hub with a gap between one of the side surfaces of the protrusion and one of the side walls of the groove, and with locking chamfers arranged to interact with the blocking chamfers of the carriage, and springs placed in tangential holes, characterized in that, in order to reduce metal consumption and simplify the design, the grooves

The invention relates to mechanical engineering and can be used in synchronizers of transmissions of vehicles.

The aim of the invention is to reduce the mass capacity and simplify the design by reducing the number of parts, namely due to the absence of crackers in the design, which allows reducing the radial dimensions of the carriage and reducing its weight.

FIG. 1 shows the first version of the synchronizer used in the planetary gear, section; in fig. 2 - a section. Л -А in FIG. one; in fig. 3 shows a section BB in FIG. 2; Fig 4 is the second variant of the synchronizer used in the planetary gear, section; in fig. 5 shows a section B-B in FIG. four; in fig. 6 - section G - G in FIG. four; in fig. 7 - section D - /. 1, in FIG. 6

The synchronizer according to the first embodiment has the following constructive use-).

The planetary gear, in which the synchronizer is installed, consists of a crankcase 1, in which a drive shaft 2 is installed, having a central wheel 3 with external teeth. On the shaft 2, the clutch 4 is directly attached to the transmission with the taper 5 rubbings and the ring gear 6. The satellites 7 mounted on the cage 8 are engaged with the central wheel 3. The crown wheel 9 with internal teeth is engaged with with satellites 7 and at the same time is the hub of the synchronizer, since a synchronizer carriage 11 is installed on the outer surfaces of the slits 10, and a direct transmission locking ring 12 and a lower transmission locking ring 13 are located on the inner side.

filled in blocking rings, protrusions are located on the hub with contact between their second side surfaces and second side walls of the grooves, tangential holes are made deaf and arranged in the projections of the hub from their second side surfaces, and the springs are installed with contact with the first side walls of the grooves in pre-compressed state, with the second side surfaces of the protrusions located opposite to the direction of the moment of the friction synchronization.

The locking rings 12 and 13 have friction cone 14 and radial protrusions 15, which are placed in the slots 16 of the crown wheel 9 (synchrophator hubs) and pressed against their side walls, opposite direction of the synchronization friction moment using springs 17 located in holes the ledges 15.

On the slots 18 of the carriage 11 there are grooves 19, on the ends of which there are blocking chamfers 20, which interact with chamfers 21 on the projections 15 of the blocking rings 12 and 13. The latter are pulled together by springs 22.

The downshift clutch 23 is installed stationary relative to the crankcase and has a toothed rim 24 and a friction cone 25. The carriage 11 can be moved axially with a fork 26.

Unlike the first version of the synchronizer, in the second version, the locking rings 27 and 28 have friction cones 29, end protrusions 30 and grooves 31 formed by the projections 32 located on the inner surface of the locking rings 27 and 28. In the grooves 31 there are projections 33, made on the ends of the crown wheel 9. Under the action of springs 34 located in the openings of the projections 33, the locking rings 27 and 28 occupy a position in which the side walls of the grooves 31 are in contact with the side faces of the projections 33 opposite to the direction of the moment of friction Synchronize.

On the inner slots 35 of the carriage 11 there are grooves 36, on the ends of which there are blocking chamfers 37 interacting with counter chamfers 38 on the end protrusions 30 of the locking rings 27 and 28. The latter are fixed between each other by springs 39. The downshift clutch 23 is fixedly positioned relative to the crankcase 1 and has a ring gear 24 and a 25 friction cone. The carriage 11 can be moved in the axial direction with the help of a fork 26 and, for connection with the gears 6 and 24, has gears 40 and 41, respectively.

The device according to the first embodiment operates as follows.

In the initial position, the direct drive clutch 4 and the ring gear 9 rotate at different angular speeds.

To engage the direct transmission, the carriage 11 is moved with the help of a fork 26 towards the coupling 4 and, since its chamfers 20 abut against the chamfers 21 on the projections 15, slide the locking ring 12 until the cones 5 and 14 touch. The friction moment acts on the locking ring 12 in the same direction as the springs 17. As a result, further axial movement of the carriage 11 is impossible, since the projections 15 of the locking ring 12 prevent this. The angular velocities of the coupling 4 and crown wheel 9 under the action of the torque tre- audio on the surfaces of cones 5 and 14 resulting from the applied to the carriage 11, the axial force peredayuschegos blocking ring 12 at the intersection of facets 20 of the carriage 11 and bevels 21 of the projections 15.

After aligning the angular velocities of these parts, the locking ring 12, overcoming the resistance of the springs 17, rotates in the opposite direction under the action of the transverse force that occurs when the axial force is transmitted from the carriage 11 to the locking ring 12 at the junction of the fascia 20 and 21. Now the protrusions 15 do not prevent the movement of the carriage 11 and its tongs 18 are engaged with the ring gear 6 of the coupling 4, connecting the latter with the ring wheel 9. The planetary row is locked and the carrier 8 rotates at the same speed as the shaft 2. The forward gear is engaged .

The downshift process is similar. As a result, the tongs 18 of the carriage 11 are engaged with the teeth of the clutch 24 of the clutch 23, connected to the crown wheel 9, which in this case is fixedly connected to the crankcase 1. The downshift is engaged, and the carrier 8 is driven the shaft rotates at an angular speed less than the speed of the drive shaft 2, the number of times due to the transmission ratio.

The device according to the second embodiment operates as follows.

In the initial position, the direct drive clutch 4 and the ring gear 9 rotate at different angular speeds.

To engage the direct transmission, the carriage 11 is moved with the help of a fork 26 towards the coupling 4 and, since its chamfers 37 abut against the chamfers 38 on the protrusions 30, moves the locking ring 27 until the cones 5 and 29 contact. friction acts on the locking ring 27 in the fOM in the same direction as the springs 34. As a result, further axial movement of the carriage 11 is impossible, since the protrusions 30 of the locking ring 27 prevent this. The angular velocities of the coupling 4 and the crown wheel 9 align with this The action of the moment of friction on the surfaces of the cones 5 and 29, resulting from the axial force applied to the carriage 11, transmitted to the blocking ring 27 at the junction of the chamfers 37 of the carriage 11 and the chamfers 38 of the projections 30.

After aligning the angular velocities of these parts, the locking ring 27, overcoming the resistance of the springs 34, rotates in the opposite direction under the action of the transverse force that occurs when the axial force is transmitted from the carriage 11 to the locking ring 27 at the junction of the chamfers 37 and 38. Now the projections 30 do not prevent the carriage from moving 11, and its ring gear 40 engages with the ring gear 6 of the coupling 4, which connects the latter with the ring wheel 9. The planetary row is blocked and the carrier 8 rotates at the same speed as the shaft 2. Direct transmission into is turned on.

The downshift process is similar. As a result, the ring gear 41 of the carriage 11 engages with the ring gear 24 of the coupling 23, which connects it to the crown wheel 9, which in this case is fixedly connected to the crankcase 1. The reduction gear is engaged, and the carrier 8, which is the driven shaft, rotates with angular speed less than the speed of the drive shaft 2, the number of times due to the gear ratio of the transmission.

.

16 17.

19 15 21.

9.

6

18 X. X

.......

W /// 7 /// A

tSh7A

five

18 X. X,

fO

z.

 sixteen

i

i

 7

FIG. Z

B jio epngmo

Yu

/ 7

Fig 3

26 -94- / 2 2J / ///

25

pu.

AT 8

36

30 38

27

28

y-y

figg 6

, - paired

Editor N. Pushnenkova Order 494/46

VNIIPI USSR State Committee

for inventions and discoveries

113035, Moscow, Zh-35, Raushsk nab. 4/5

Branch PPP "Patent, Uzhgorod, st. Project, 4

Compiled by I. Lukin

Tehred I. Veres Corrector L. Patay

Circulation && 0Subscription

Claims (2)

1. A gear synchronizer comprising a hub with grooves at the ends, a carriage with locking chamfers mounted on the hub with axial movement, locking rings with protrusions located in the grooves of the hub with a gap between one of the side surfaces of the protrusion and one of the side walls groove, and with blocking chamfers arranged to interact with blocking chamfers of the carriage, and springs placed in tangential openings, characterized in that, in order to reduce the metal consumption and simplify the console the structures, the protrusions of the locking rings are located with the contact between their second side surfaces and the second side walls of the grooves, the tangential holes are blind and located in the protrusions of the locking rings from the side of their second side surfaces, and the springs are installed in contact with the first side walls of the grooves in a pre-compressed state while the second side walls of the grooves are located opposite the direction of the moment of friction synchronization. fig 1 SU, „, 1209962> 2. A gearbox synchronizer comprising a hub, a carriage with locking chamfers mounted on the hub with axial movement, locking rings with protrusions located in the grooves of the hub with a gap between one of the side surfaces of the protrusion and one of the side walls of the groove, and with locking chamfers arranged with the possibility of interaction with blocking chamfers of the carriage, and springs placed in tangential holes, characterized in that, in order to reduce the metal consumption and simplify the design, the grooves you are not in the locking rings, the protrusions are located on the hub with the contact between their second side surfaces and the second side walls of the grooves, the tangential holes are blind and located in the protrusions of the hub on the side of their second side surfaces, and the springs are installed in contact with the first side walls of the grooves a compressed state, while the second side surfaces of the protrusions are located opposite the direction of the moment of friction of synchronization.