CN220248738U - Main reducer assembly of transaxle and transaxle - Google Patents
Main reducer assembly of transaxle and transaxle Download PDFInfo
- Publication number
- CN220248738U CN220248738U CN202321637434.3U CN202321637434U CN220248738U CN 220248738 U CN220248738 U CN 220248738U CN 202321637434 U CN202321637434 U CN 202321637434U CN 220248738 U CN220248738 U CN 220248738U
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- bearing
- flange
- brake disc
- gear shaft
- bearing seat
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- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 43
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 125000006850 spacer group Chemical group 0.000 claims description 6
- 230000013011 mating Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 description 12
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The utility model discloses a main speed reducer assembly of a drive axle and the drive axle, wherein the main speed reducer assembly of the drive axle comprises a speed reducer shell, a bearing seat, a gear shaft, a flange, a brake disc and a brake caliper; the bearing seat is fixedly connected to the reducer shell, and the gear shaft is connected to the bearing seat in a penetrating way and pivoted to the bearing seat through a bearing; one end of the gear shaft extends out of the bearing seat to form a connecting end; the flange is sleeved outside the connecting end and synchronously connected with the connecting end, the connecting end is in threaded connection with a lock nut, and the flange is clamped between the lock nut and the inner ring of the bearing; the brake disc is arranged on the periphery of the flange and is integrally formed with the flange; the brake caliper is arranged on the shell of the speed reducer or the bearing seat and comprises two cantilevers which are respectively arranged on two sides of the brake disc, wherein a friction plate is arranged on one cantilever, and a piston rod is movably arranged on the other cantilever. The utility model prolongs the service life of the main speed reducer assembly.
Description
Technical Field
The utility model relates to the technical field of commercial vehicles, in particular to a main speed reducer assembly of a drive axle and the drive axle.
Background
The main speed reducer assembly comprises a speed reducer shell, a drive bevel gear, basin teeth and a differential, wherein the speed reducer shell is fixed in the middle of the axle shell, the speed reducer shell and the axle shell form a cavity, the drive bevel gear, the basin teeth and the differential are arranged in the cavity, the drive bevel gear is arranged on a gear shaft, the outer end part of the gear shaft penetrates out of the speed reducer shell, a flange is synchronously connected to the outer end of the gear shaft, a brake caliper and a brake disc matched with the brake caliper are arranged on some driving axles, the brake disc is connected to the periphery of the flange through bolts, the brake caliper is arranged on the speed reducer shell and spans the two sides of the brake disc, a piston rod on the brake caliper moves to be in contact with the brake disc, the purpose of braking is achieved, the brake disc is connected to the cavity through bolts, when the piston rod on the brake caliper is in contact with the brake disc, the brake disc generates larger friction force between the piston rod and the brake disc, the brake disc rotates, the bolts used for connecting the brake disc and the flange of the brake disc are in synchronous connection with a flange, the flange of the brake disc is subjected to larger impact, the brake disc is matched with the brake disc, and the brake disc is in contact with the brake disc, and the brake disc.
Disclosure of Invention
In view of the shortcomings of the prior art, an object of the present utility model is to provide a main speed reducer assembly of a drive axle, which can prolong the service life of the main speed reducer assembly.
The second purpose of the utility model is to provide a drive axle.
In order to achieve the first purpose, the utility model adopts the following technical scheme:
the main speed reducer assembly of the drive axle comprises a speed reducer shell, a bearing seat, a gear shaft, a flange, a brake disc and a brake caliper;
the bearing seat is fixedly connected to the reducer shell, the gear shaft is connected to the bearing seat in a penetrating way and pivoted to the bearing seat through a bearing, the outer ring of the bearing is fixed on the bearing seat, and the inner ring of the bearing is fixed on the gear shaft; one end of the gear shaft extends out of the bearing seat to form a connecting end;
the flange is sleeved outside the connecting end and synchronously connected with the connecting end, the connecting end is in threaded connection with a lock nut, and the flange is clamped between the lock nut and the inner ring of the bearing;
the brake disc is arranged on the periphery of the flange and is integrally formed with the flange;
the brake caliper is arranged on the shell of the speed reducer or the bearing seat and comprises two cantilevers which are respectively arranged on two sides of the brake disc, wherein one cantilever is provided with a friction plate matched with one side surface of the brake disc, and the other cantilever is movably provided with a piston rod matched with the other side surface of the brake disc.
The connecting end is provided with a spline, and the inner wall of the flange is provided with a key groove matched with the spline.
The bearing seat is provided with a first bearing installation position and a second bearing installation position positioned on the inner side of the first bearing installation position, a bearing is installed in each of the first bearing installation position and the second bearing installation position, and the inner side end of the flange is propped against the inner ring of the bearing positioned in the first bearing installation position.
The inner ring of the bearing in the second bearing installation position is propped against the step surface on the gear shaft, a spacer bush is sleeved on the gear shaft, and two ends of the spacer bush are respectively propped against the inner rings of the two bearings.
An oil seal is also arranged between the flange and the outer end part of the bearing seat.
The bearing seat is fixedly connected to the reducer shell through a plurality of bolts.
The bearing seat is fixedly connected with a connecting seat, the brake caliper is arranged on the connecting seat, and a part of bolts sequentially penetrate through the connecting seat and the bearing seat and then are connected to the reducer shell in a threaded manner.
In order to achieve the second purpose, the utility model adopts the following technical scheme:
the drive axle comprises the main speed reducer assembly of the drive axle.
The utility model has the beneficial effects that:
in the utility model, the flange is connected to the connecting end of the gear shaft, the flange is locked and fixed on the gear shaft by the lock nut, and meanwhile, the brake disc and the flange are integrally constructed, so that the brake disc and the flange form a whole, and when the brake disc receives the resistance of the brake caliper, the stress can be transmitted to the wheel outlet shaft through the flange, thereby avoiding the stress from being concentrated on the brake disc, prolonging the service life of the brake disc and prolonging the service life of the main reducer assembly.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
fig. 2 is a cross-sectional view of the present utility model.
Detailed Description
The utility model is further described below with reference to the drawings and detailed description:
referring to fig. 1 and 2, the main reducer assembly of the drive axle according to the present utility model includes a reducer housing 10, a bearing housing 20, a gear shaft 30, a flange 40, a brake disc 50, and a brake caliper 60, wherein the reducer housing 10 is fixedly connected to an axle housing of the drive axle, the bearing housing 20 is fixedly connected to the reducer housing 10, specifically, a connecting end face 11 is provided on the reducer housing 10, a connecting flange 21 is formed on a periphery of the bearing housing 20, the connecting flange 21 is fixed to the connecting end face 11, the gear shaft 30 is connected to the bearing housing 20 in a penetrating manner and pivoted to the bearing housing 20 through a bearing, an inner end of the gear shaft 30 extends into the reducer housing 10 and then is connected to the drive bevel gear, and an outer end of the gear shaft 30 extends out of the bearing housing 20 and forms a connecting end 31 outside the bearing housing 20; the flange 40 is sleeved outside the connecting end 31 and is synchronously connected with the connecting end 31, the connecting end 31 is connected with a lock nut 33 in a screwed mode, after the flange 40 is sleeved on the connecting end 31, the lock nut 33 is sleeved on the outer side end of the connecting end 31, after the lock nut 33 is screwed, the flange 40 is pressed inwards, the flange 40 is clamped between the lock nut 33 and the inner ring of the bearing, and therefore the flange 40 is fixed on the gear shaft 30, and the flange 40 can drive the gear shaft 30 to rotate. The brake disc 50 is disposed on the periphery of the flange 40, and the brake disc 50 is integrally formed with the flange 40. The brake caliper 60 is mounted on the bearing seat 20 and comprises a cantilever 62 and a cantilever 63, the cantilever 62 and the cantilever 63 are respectively arranged on two sides of the brake disc 50, a friction plate 621 is arranged on the cantilever 62, the friction plate 621 is matched with one side surface of the brake disc 50, braking force is generated after the friction plate 621 contacts with the brake disc 50, a piston rod 631 is movably mounted on the cantilever 63, the piston rod 631 can be matched with the other side surface of the brake disc 50 after being telescopic, and during braking, the piston rod 631 presses the brake disc 50, so that the piston rod 631 is matched with the friction plate 621 to clamp the brake disc 50, and braking force is provided for the flange 40.
In the utility model, the flange is connected to the connecting end of the gear shaft, the flange is locked and fixed on the gear shaft by the lock nut, and meanwhile, the brake disc and the flange are integrally constructed, so that the brake disc and the flange form a whole, and when the brake disc receives the resistance of the brake caliper, the stress can be transmitted to the wheel outlet shaft through the flange, thereby avoiding the stress from being concentrated on the brake disc, prolonging the service life of the brake disc and prolonging the service life of the main reducer assembly.
In order to further reduce stress concentration, the utility model is provided with the spline 32 on the connecting end 31, a plurality of key grooves are arranged on the inner wall of the flange, and a plurality of convex teeth of the spline 32 are correspondingly embedded in the plurality of key grooves, so that the connecting end 31 and the flange 40 are connected together.
The bearing seat 20 is provided with two bearings, specifically, a first bearing installation position and a second bearing installation position which is positioned on the inner side of the first bearing installation position are arranged on the bearing seat 20, a bearing 71 is arranged in the first bearing installation position, a bearing 72 is arranged in the second bearing installation position, inner rings of the bearing 71 and the bearing 72 are fixed on the gear shaft 30, outer rings of the bearing 71 and the bearing 72 are fixed on the bearing seat 20, and the inner side end of the flange 40 is propped against the inner ring of the bearing 71. The inner race of the bearing 72 is abutted against a stepped surface preset on the gear shaft 30, which may be a stepped surface formed at the junction of the gear shaft 30 and the drive bevel gear connected to the inner side end thereof. The gear shaft 30 is sleeved with a spacer 73, and two ends of the spacer 73 respectively abut against the inner ring of the bearing 71 and the inner ring of the bearing 72.
In addition, an oil seal 41 is provided between the flange 40 and the outer end portion of the bearing housing 20, and a gap between the flange 40 and the bearing housing 20 is sealed by the oil seal 41 while ensuring that the flange 40 can normally rotate with respect to the bearing housing 20.
The bearing seat 20 can be fixed on the reducer casing 10 through a plurality of bolts 22, specifically, the bolts 22 can pass through a connecting flange 21 on the bearing seat 20 and then are screwed into bolt holes formed in the connecting end face 11 of the reducer casing 10, the bolts 22 are screwed, the bearing seat 20 and the reducer casing 10 can be fixed, and meanwhile, the bearing seat 20 can be conveniently detached in a mode of being connected by the bolts 22, so that the main reducer assembly is convenient to maintain. A connecting seat 61 is fixedly connected to the bearing seat 20, and a brake caliper 60 is arranged on the connecting seat 61; a part of the bolts 22 pass through the connecting seat 61 and the bearing seat 20 in sequence and are then screwed on the reducer casing 10. The present utility model may be to mount the brake caliper 60 on the decelerator casing 10, for example, to fix the connection base 61 on the decelerator casing 10, or to directly mount the brake caliper 60 on the decelerator casing 10.
The drive axle of the present utility model includes the final drive assembly described above, and other structures of the drive axle are the same as those of the prior art and will not be described in detail herein.
The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that modifications may be made to the technical solutions described in the foregoing embodiments or equivalents may be substituted for some of the technical features thereof, and these modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model in essence.
Claims (8)
1. The main speed reducer assembly of the drive axle is characterized by comprising a speed reducer shell, a bearing seat, a gear shaft, a flange, a brake disc and a brake caliper;
the bearing seat is fixedly connected to the reducer shell, the gear shaft is connected to the bearing seat in a penetrating way and pivoted to the bearing seat through a bearing, the outer ring of the bearing is fixed on the bearing seat, and the inner ring of the bearing is fixed on the gear shaft; one end of the gear shaft extends out of the bearing seat to form a connecting end;
the flange is sleeved outside the connecting end and synchronously connected with the connecting end, the connecting end is in threaded connection with a lock nut, and the flange is clamped between the lock nut and the inner ring of the bearing;
the brake disc is arranged on the periphery of the flange and is integrally formed with the flange;
the brake caliper is arranged on the shell of the speed reducer or the bearing seat and comprises two cantilevers which are respectively arranged on two sides of the brake disc, wherein one cantilever is provided with a friction plate matched with one side surface of the brake disc, and the other cantilever is movably provided with a piston rod matched with the other side surface of the brake disc.
2. The final drive assembly of claim 1, wherein the connecting end is provided with splines and the inner wall of the flange is provided with keyways for mating with the splines.
3. The final drive assembly of claim 1, wherein the bearing housing is provided with a first bearing mount and a second bearing mount located inboard of the first bearing mount, a bearing being mounted in each of the first and second bearing mounts, the inboard end of the flange bearing against the inner race of the bearing in the first bearing mount.
4. A final drive assembly for a drive axle as claimed in claim 3, wherein the inner race of the bearing in the second bearing mounting position abuts against a stepped surface on the gear shaft, the gear shaft being sleeved with a spacer, the two ends of the spacer abutting against the inner races of the two bearings respectively.
5. The final drive assembly of claim 1, wherein an oil seal is further provided between the flange and the outboard end of the bearing housing.
6. The final drive assembly of claim 1, wherein the bearing housing is fixedly coupled to the reducer housing by a plurality of bolts.
7. The final drive assembly of claim 6, wherein a connecting seat is fixedly connected to the bearing housing, the brake caliper is mounted on the connecting seat, and a portion of the bolts sequentially pass through the connecting seat and the bearing housing and are then screwed to the reducer housing.
8. A drive axle comprising a final drive assembly as claimed in any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321637434.3U CN220248738U (en) | 2023-06-27 | 2023-06-27 | Main reducer assembly of transaxle and transaxle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321637434.3U CN220248738U (en) | 2023-06-27 | 2023-06-27 | Main reducer assembly of transaxle and transaxle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220248738U true CN220248738U (en) | 2023-12-26 |
Family
ID=89269769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321637434.3U Active CN220248738U (en) | 2023-06-27 | 2023-06-27 | Main reducer assembly of transaxle and transaxle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220248738U (en) |
-
2023
- 2023-06-27 CN CN202321637434.3U patent/CN220248738U/en active Active
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| GR01 | Patent grant |