CN205273437U - Wet braking driving axle - Google Patents
Wet braking driving axle Download PDFInfo
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- CN205273437U CN205273437U CN201520860217.XU CN201520860217U CN205273437U CN 205273437 U CN205273437 U CN 205273437U CN 201520860217 U CN201520860217 U CN 201520860217U CN 205273437 U CN205273437 U CN 205273437U
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Abstract
The utility model discloses a wet braking driving axle, include main reducer assembly, axle housing assembly, arrange wet brake, wheel reduction assembly and semi -axis in the axle housing assembly in, the both ends of semi -axis are connected respectively main reducer assembly and wheel reduction assembly, when wet brake is in braking operating condition, the braking the semi -axis. The utility model provides a wet braking driving axle adopts the braking semi -axis to accomplish the braking operation, and when brakeing the operation, the piston pushing friction is vice to compress tightly the laminating, has realized the semi -axis braking reliably. Compared with the prior art, the utility model discloses a less semi -axis of braking torque, small, load is light, inertia is little, simultaneously simple structure, lubricating oil chamber are big, the radiating effect is good, greatly reduced the braking generate heat to the job stabilization nature and system dynamic stability of complete machine have been improved effectively.
Description
Technical field
This utility model relates to a kind of drive axle, is specifically related to a kind of wet-type braking driving axle.
Background technology
It is known that, the applying working condition of engineering machinery is relatively more severe comparatively speaking, at present, domestic project machinery vehicle bridge product market is still based on dry type braking drive axle, dry type drive axle adopts external dry brake simultaneously, it is relatively big by such environmental effects such as humidity, frost, sand and dust that this results in dry type drive axle, and braking ability is unstable, and service life is shorter; Wet brake is built-in, is not substantially affected by such environmental effects, and long service life, brake safe are reliable, are widely used in existing engineering machinery.
In the prior art, wet-type braking driving axle has many application, Chinese patent literature if publication number is CN201010184823.6 discloses one " wet-type braking driving axle and have the loader of this drive axle ", this drive axle includes the main function components such as axle case assy, main reducing gear, hub reduction gear, wet brake, semiaxis, wherein main reducing gear is placed in axle case assy, semiaxis one end is connected with main reducing gear, the other end is connected with hub reduction gear, and the housing of wet brake is fixing with described axle case assy to be connected.
Some active friction plates of wet brake and driven friction disk are arranged at intervals at inner volume vertically successively, and be connected for slide key between the interior edge of its active friction plate and the outer surface of described wheel hub, the outer of its driven friction disk is connected with the housing slide key of described wet brake, when being braked, friction pair compresses laminating, completes brake operating by brake hub. The wheel hub of this wet brake braked wheel side reducer, braking required torque is relatively big, and brake Capability Requirement is higher; And brake is disposed adjacent to hub reduction gear position, causing that structure is complicated, assembling and maintainability are poor.
Summary of the invention
The purpose of this utility model is to provide a kind of central authorities wet-type braking driving axle, multisection type design, the little layout convenient for assembly of volume and maintenance, there is driving, the two-in-one braking function of parking, safe and reliable, and wet braking good heat dissipation, effectively reducing braking heating, braking ability is stable.
For solving above-mentioned technical problem, this utility model provides a kind of wet-type braking driving axle, including main gearbox assembly, axle case assy, the wet brake being placed in axle case assy, hub reduction gear assembly and semiaxis, the two ends of described semiaxis connect described main gearbox assembly and hub reduction gear assembly respectively, when described wet brake is in braking operation state, brake described semiaxis.
Main gearbox assembly includes master and subtracts housing, main driven helical gear pair, limited-slip differential, input flange, support, input flange is the power input part of drive axle, with main, support subtracts that housing is fixing to be connected, described main driven helical gear pair transmission power is to limited-slip differential, simultaneously work as the effect changing power direction of transfer, deceleration increasing torsion, bevel gear and axle shaft gear within limited-slip differential impart power to semiaxis, and meet the differential demand of two-wheeled under the operating modes such as main frame turning and the traction requirement of muddy road surface.
The described inner volume between the axle shaft gear in limited-slip differential and differential casing vertically successively interval active friction plate and driven friction disk are set, active friction plate internal tooth is connected with axle shaft gear spline, and the outer of driven friction disk is connected with described differential casing slide key. When vehicle slip, described limited-slip differential increases the driving force of single wheel at a slow speed automatically, significantly improve vehicle by property, and simple in construction, processing and assembling are better.
Described hub reduction gear is primary planet decelerator, and including planetary wheel carrier, sun gear, planetary gear, wheel hub, ring gear, ring gear wheel hub, described sun gear is power input part, and planetary wheel carrier is power output part; Planetary wheel carrier and planet axis are an entirety, and simple in construction, intensity is high, and assembly process process is better. Described planetary wheel carrier supports planetary gear, is provided with ring gear outside planetary gear, and ring gear is by ring gear hub support, and described ring gear wheel hub is fixedly connected on axle housing, and the sun gear of hub reduction gear is connected with Formation of Axle Shaft Spline.
The wheel hub of described hub reduction gear is by bearings on described axle case assy, and wheel hub is provided with cartridge seal part and dust cap axially move closer to the side of main gearbox assembly, can be prevented effectively from leakage of oil and dirty dirt enters.
Described wet brake is placed in axle case assy, including brake hub, piston, spring, friction pair, brake hub and axle housing and main subtract that housing is fixing to be connected, piston is placed in brake hub inner volume, some active friction plates and driven friction disk are arranged at intervals at the inner volume between piston and axle housing vertically successively, and the interior edge of its active friction plate is connected with the outer surface of slip cap, it is connected for slide key between the outer of driven friction disk with axle housing inner ring surface.
Described slip cap inner ring surface is provided with spline, and slip cap is connected with Formation of Axle Shaft Spline; The pin-and-hole that axle housing is corresponding with driven disc is provided with resilient key, the rotation of restriction driven disc.
Being evenly distributed with counter sink on described brake hub, counter sink is internally provided with push rod, and push rod one end is connected with piston thread hole, and the other end is fixing with spring base to be connected; Described spring base side is provided with helical spring, and opposite side is provided with back-up ring, limits it and moves axially.
Described brake hub offers oil-in and oil duct, in order to it is axially displaced that described piston overcomes spring force to produce under the effect of pressure oil, pressing friction sheet.
The wet-type braking driving axle that this utility model provides adopts braking semiaxis to complete brake operating, and when being braked operation, piston promotes friction pair to carry out (driving and driven friction plate) and compresses laminating, has been reliably achieved Semi-axle brake. Compared with prior art, this utility model passes through the semiaxis that braking torque is less, and volume is little, load is light, and inertia is little, and simple in construction, lubricant reservoir are big simultaneously, good heat dissipation effect, greatly reduces braking heating, thus being effectively improved job stability and the insensitivity of complete machine.
This utility model adopts multisection type design, and axle housing is split type being arranged symmetrically with, it is simple to assembling and field maintenance, and wet brake is near central authorities' main gearbox assembly, it is to avoid hub reduction gear assembly is excessive is not easy to the defect that assembling is arranged,
On the support of main gearbox assembly described in the utility model can mounting clamp disk brake, described input flange can be braked, it is achieved caliper disc parking braking, kill two birds with one stone.
Accompanying drawing explanation
Fig. 1 is the structural representation of wet-type braking driving axle described in detailed description of the invention;
Fig. 2 is the enlarged drawing of wet brake in Fig. 1;
In figure: main gearbox assembly 1, wet brake 2, axle case assy 3, semiaxis 4, hub reduction gear assembly 5, limited-slip differential 6, master subtracts housing 11, input flange 12, support 13, differential casing 61, little driven disc 62, little rotating plate 63, cross axle 64, bevel gear 65, axle shaft gear 66, axle housing 31, planetary wheel carrier 51, sun gear 52, planetary gear 53, ring gear 54, ring gear wheel hub 55, wheel hub 56, dust cover 57, cartridge seal part 58, brake hub 21, piston 22, oil duct 23, oil-in 24, driven disc 25, rotating plate 26, slip cap 27, push rod 28, spring 29, back-up ring 210, spring base 211.
Detailed description of the invention
This utility model provides a kind of wet-type braking driving axle, including axle case assy 3, the wet brake 2 being placed in axle case assy 3, the main gearbox assembly 1 of whole bridge central transmission, hub reduction gear assembly 5, semiaxis 4 one end connects main gearbox assembly 1, the sun gear 52 of other end fifth wheel side reducer assembly 5. Power is delivered to hub reduction gear assembly 5 through main gearbox assembly 1, and after hub reduction gear assembly 5 slows down, power is exported by wheel hub 55. It should be noted that this drive axle is the symmetrical structure centered by main gearbox assembly 1, Fig. 1 illustrate only a side structure of main gearbox assembly 1, clearly to illustrate particular make-up and annexation.
Described main gearbox assembly 1 is subtracted housing 11 by master and supports, the main housing 11 that subtracts is connected as an entirety with brake hub 21, axle housing 31 by bolt, support 13 is fixedly connected on and main subtracts on housing on 11, after power is inputted by input flange 12, after main driven helical gear pair is slowed down and changed direction of transfer, pass to limited-slip differential 6. Limited-slip differential 6 passes through bearings on brake hub 21. Cross axle 64 is split type, is clipped between left and right differential casing 61 in the circular groove of formation, and bevel gear 65 is sleeved on described cross axle 64, and axle shaft gear 66 is placed on described bevel gear 65. Little rotating plate 63 and little driven disc 62 are arranged at intervals between two axle shaft gears 66 in left and right and differential casing 61 successively. Described little rotating plate 63 inner ring surface is connected with axle shaft gear 66 spline, and described little driven disc 62 external annular surface is fixing with differential casing 61 to be connected.
When vehicle travels on normal road surface, little rotating plate 63 and little driven disc 62 are because there being the existence in gap, along with differential casing 61 dallies, now limited-slip differential 6 only serves the effect of common differential mechanism, and axle shaft gear 66 is the power delivery section of differential mechanism.
When being absorbed in muddy section or vehicle slip at vehicle, the moment of resistance suffered by drive axle both sides is different, split type cross axle 64 will separate to both sides, left and right axle shaft gear 66 pressing friction sheet, rotating speed axle shaft gear 66 faster is just subject to the restriction of little rotating plate 63 and differential casing 61 makes the moment of torsion on axle shaft gear 65 too to reduce, pass to the side semiaxis 4 that rotating speed is slower, and then the torque of the slower side semiaxis 4 of rotating speed is increased.
Described hub reduction gear assembly 5 is primary planet decelerator, and described wheel hub 56 is by bearings on axle case assy 3, and planetary wheel carrier 51 is connected by bolt with wheel hub 56, and ring gear wheel hub 54 is bolted with axle housing 31 and is connected. Four bearing pins on described planetary wheel carrier 51 play the effect of planet axis, simple in construction, and intensity is high, processing technique and assembling are better, planetary gear 53 is sleeved on four bearing pins of planetary wheel carrier 51 projection, is ring gear 54 outside planetary gear 53, and inner side is sun gear 52. Described ring gear 54 is supported by ring gear wheel hub 55, and described sun gear 52 is the power input part of planetary reduction gear, is connected with semiaxis 4 one end spline, and described wheel hub 56 is power output part.
The cavity volume formed between described wheel hub 56 inner circumferential and axle housing 31 outer surface is provided with cartridge seal part 58, and wheel hub 56 is provided with dust cap 57 near one end of main gearbox assembly 1, cartridge seal part 58 and dust cap 57 are combined, substantially increase the sealing of hub reduction gear assembly 5, be prevented effectively from the generation of leakage of oil accident.
Described wet brake 2 is placed in axle case assy 3, this wet brake 2 coordinates realization braking with semiaxis 4, brake hub 21 is connected as an entirety with bevel housing 11, axle housing 31 by bolt, please also refer to Fig. 2, the figure shows the structural representation of wet brake 2.
Wherein, it is internal that piston 22 is placed in brake hub 21, some rotating plates 26 and driven disc 25 are arranged at intervals in the cavity volume between piston 22 and axle housing 31 successively, the inner ring surface of rotating plate 26 is connected with slip cap 27 spline, slip cap 27 inner ring surface is connected with semiaxis 4 spline, the external annular surface of driven disc 25 is fixing with axle housing 31 to be connected, and corresponding pin-and-hole position is provided with resilient key, in order to restriction driven disc 25 rotates.
Described brake hub 21 end face is evenly distributed with counter sink, and push rod 28 is arranged in counter sink, and its one end is fixing with piston 22 to be connected, and the other end is fixing with spring base 211 to be connected; Described spring base 211 side is provided with back-up ring 210, in order to limits it and moves axially; Described spring 29 is arranged in the cavity volume of brake hub 21 counter sink and spring base 211 formation. The internal cavity wall of brake hub 21 and the outside cavity wall of piston 22 offer cannelure, and are provided with sealing ring.
Described brake hub 21 end face outside is provided with oil-in 24, brake hub 21 is internally provided with oil duct 23, so that pressure oil is by described oil-in 24, oil duct 23, enter the closing cavity volume that piston 22 is formed with brake hub 21, promoting piston 22 to compress rotating plate 26 and driven disc 25 to axle housing 31 end face, brake sliding set 27 and then braking semiaxis 4 complete brake operating.
After brake release, push rod 28 drags piston 22 return under spring force.
Finally should be noted that: above example is only in order to illustrate that the technical solution of the utility model is not intended to limit; Although this utility model being described in detail with reference to preferred embodiment, those of ordinary skill in the field are it is understood that still can modify to detailed description of the invention of the present utility model or portion of techniques feature carries out equivalent replacement; Without deviating from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technical scheme scope that this utility model is claimed.
Claims (10)
1. a wet-type braking driving axle, it is characterized in that including, main gearbox assembly, axle case assy, the wet brake being placed in axle case assy, hub reduction gear assembly and semiaxis, the two ends of described semiaxis connect described main gearbox assembly and hub reduction gear assembly respectively, when described wet brake is in braking operation state, brake described semiaxis.
2. a kind of wet-type braking driving axle according to claim 1, it is characterized in that, described main gearbox assembly includes master and subtracts housing, main driven helical gear pair, limited-slip differential, input flange, support, input flange is the power input part of drive axle, with main, support subtracts that housing is fixing to be connected, described main driven helical gear pair transmission power is to limited-slip differential, simultaneously working as the effect changing power direction of transfer, deceleration increasing torsion, bevel gear and axle shaft gear within limited-slip differential impart power to semiaxis.
3. a kind of wet-type braking driving axle according to claim 2, it is characterized in that, the described inner volume between the axle shaft gear in limited-slip differential and differential casing vertically successively interval active friction plate and driven friction disk are set, active friction plate internal tooth is connected with axle shaft gear spline, and the outer of driven friction disk is connected with described differential casing slide key.
4. a kind of wet-type braking driving axle according to claim 1, it is characterized in that, described hub reduction gear is primary planet decelerator, including planetary wheel carrier, sun gear, planetary gear, wheel hub, ring gear, ring gear wheel hub, described sun gear is power input part, and planetary wheel carrier is power output part; Planetary wheel carrier and planet axis are an entirety.
5. a kind of wet-type braking driving axle according to claim 1, it is characterised in that the wheel hub of described hub reduction gear is by bearings on described axle case assy, and wheel hub is provided with cartridge seal part and dust cap axially move closer to the side of main gearbox assembly.
6. a kind of wet-type braking driving axle according to claim 1, it is characterized in that, described wet brake includes brake hub, piston, spring, friction pair, brake hub and axle housing and main subtract that housing is fixing to be connected, piston is placed in brake hub inner volume, some active friction plates and driven friction disk are arranged at intervals at the inner volume between piston and axle housing vertically successively, and the interior edge of its active friction plate is connected with the outer surface of slip cap, it is connected for slide key between the outer of driven friction disk with axle housing inner ring surface.
7. a kind of wet-type braking driving axle according to claim 6, it is characterised in that described slip cap inner ring surface is provided with spline, and slip cap is connected with Formation of Axle Shaft Spline; The pin-and-hole that axle housing is corresponding with driven disc is provided with resilient key, the rotation of restriction driven disc.
8. a kind of wet-type braking driving axle according to claim 6, it is characterised in that being evenly distributed with counter sink on described brake hub, counter sink is internally provided with push rod, and push rod one end is connected with piston thread hole, the other end is fixing with spring base to be connected.
9. a kind of wet-type braking driving axle according to claim 8, it is characterised in that described spring base side is provided with helical spring, and opposite side is provided with back-up ring, limits it and moves axially, and described brake hub offers oil-in and oil duct.
10. a kind of wet-type braking driving axle according to claim 4, it is characterized in that, described planetary wheel carrier supports planetary gear, ring gear it is provided with outside planetary gear, ring gear is by ring gear hub support, described ring gear wheel hub is fixedly connected on axle housing, and the sun gear of hub reduction gear is connected with Formation of Axle Shaft Spline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520860217.XU CN205273437U (en) | 2015-11-02 | 2015-11-02 | Wet braking driving axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520860217.XU CN205273437U (en) | 2015-11-02 | 2015-11-02 | Wet braking driving axle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205273437U true CN205273437U (en) | 2016-06-01 |
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ID=56058039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520860217.XU Active CN205273437U (en) | 2015-11-02 | 2015-11-02 | Wet braking driving axle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205273437U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105383455A (en) * | 2015-11-02 | 2016-03-09 | 徐州徐工传动科技有限公司 | Wet brake drive axle |
| CN109736280A (en) * | 2019-01-04 | 2019-05-10 | 武汉船用机械有限责任公司 | A kind of brake apparatus for self-elevating ocean platform jacking system |
| CN110043583A (en) * | 2019-04-28 | 2019-07-23 | 浙江金道科技股份有限公司 | Drive axle and its brake assembly |
-
2015
- 2015-11-02 CN CN201520860217.XU patent/CN205273437U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105383455A (en) * | 2015-11-02 | 2016-03-09 | 徐州徐工传动科技有限公司 | Wet brake drive axle |
| CN109736280A (en) * | 2019-01-04 | 2019-05-10 | 武汉船用机械有限责任公司 | A kind of brake apparatus for self-elevating ocean platform jacking system |
| CN110043583A (en) * | 2019-04-28 | 2019-07-23 | 浙江金道科技股份有限公司 | Drive axle and its brake assembly |
| CN110043583B (en) * | 2019-04-28 | 2024-05-24 | 浙江金道科技股份有限公司 | Driving axle and brake assembly thereof |
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| GR01 | Patent grant |