CN103057406A - Direct through type single-stage reduction drive axle - Google Patents
Direct through type single-stage reduction drive axle Download PDFInfo
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- CN103057406A CN103057406A CN2012105925438A CN201210592543A CN103057406A CN 103057406 A CN103057406 A CN 103057406A CN 2012105925438 A CN2012105925438 A CN 2012105925438A CN 201210592543 A CN201210592543 A CN 201210592543A CN 103057406 A CN103057406 A CN 103057406A
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Abstract
The invention relates to a direct through type single-stage reduction drive axle. The direct through type single-stage reduction drive axle comprises an axle housing, wheel hubs, a brake and a direct through type main reducer. A wheel differential mechanism is arranged in the direct through type main reducer, one end of a left-half shaft and one end of a right-half shaft which are arranged in the axle housing are respectively matched and connected with a left-half shaft gear and a right-half shaft gear in the wheel differential mechanism, the other end of the left-half shaft and the other end of the right-half shaft are matched and connected with wheel hubs arranged at the left end and the right end of the axle housing, and the wheel differential mechanism is connected with a passive double curved surface gear. The wheel differential mechanism is arranged in the direct through type main reducer, a through shaft is arranged above and perpendicular to the left-half shaft, one end of the through shaft is matched and connected with the axle housing, the other end of the through shaft is matched and connected with a first bevel gear, one end of a shaft barrel integrated with an active double curved surface gear is matched and connected with a second bevel gear arranged in the wheel differential mechanism, and the active double curved surface gear is a right-handed rotation gear and meshed with the passive double curved surface gear arranged on the wheel differential mechanism. The direct through type single-stage reduction drive axle is high in transmission efficiency and good in economical efficiency and passing ability.
Description
Technical field
The present invention relates to the heavy motor vehicle parts, be specifically related to a kind of a kind of direct through singl-reduction axle for multiaxis (three axles and more than three axles) heavy motor vehicle multiple driving axle.
Background technology
Present domestic multi-axle heavy type automobile for designs simplification, is simplified the layout of transmission shaft in design and manufacturing, the parts commonality is good and be convenient to form series of products, often adopts through-drive axle.The transmission shaft of two drive axles is connected, and transmission shaft leads to another drive axle from passing from change-speed box or the part-time case drive axle close to, and in this arrangement, transmission shaft must pass from drive axle, and this drive axle is called through-drive axle.Domestic single-stage speed reducing through-drive axle is made of axle housing, wheel hub, drg, penetrable final drive etc. usually.Wherein the structure of penetrable final drive is mainly by: interaxle differential (that is: cone planetary gear formula interaxle differential assembly), initiatively cylindrical wheel, passive cylindrical wheel, shaft space difference speed lock, through shaft assembly, inter-wheel differential (that is: cone planetary gear formula inter-wheel differential assembly) form.Wherein two finishing bevel gear cuters of the interaxle differential of input end by wherein, connect with active cylindrical wheel and through shaft assembly respectively by spline; The initiatively cylindrical wheel of cylindrical wheel and the engagement of passive cylindrical wheel, passive cylindrical wheel connects with the initiative taper helical wheel by spline, initiative taper helical wheel and meshed the drive inter-wheel differential by the mantle helical wheel.The power of through-drive axle is by the interaxle differential input of input end, divide two line transmission by interaxle differential again, one in the between centers diff a finishing bevel gear cuter, initiatively cylindrical wheel, passive cylindrical wheel, initiative taper helical wheel, by mantle helical wheel and inter-wheel differential and half axially wheel transmission; Another another finishing bevel gear cuter in the between centers diff, through shaft are to the rear driving axle transmission.Initiatively the spline of cylindrical wheel and the spline of through shaft assembly connect, separate by shaft space difference speed lock clutch cover, realize locking, the differential of interaxle differential.
Referring to Fig. 3, Fig. 4, existing penetrable final drive assembly 41 mainly by interaxle differential, shaft space difference speed lock clutch cover 35, initiatively cylindrical wheel 34, passive cylindrical wheel 36, through shaft assembly 5, one group of finishing bevel gear cuter 39,40, initiative taper helical wheel 37, formed by mantle helical wheel 38, inter-wheel differential 31 and left and right half 29,33 etc.Wherein initiatively the splined section of cylindrical wheel 34 connects with a finishing bevel gear cuter 39 in the interaxle differential, initiatively cylindrical wheel 34 meshes with passive cylindrical wheel 36, passive cylindrical wheel 36 connects with initiative taper helical wheel 37 by spline, initiative taper helical wheel 37 with driven inter-wheel differentials 31 by 38 engagements of mantle helical wheel, left and right half 29,33 connects with two finishing bevel gear cuters in the inter-wheel differential 31 respectively by spline; The splined section of through shaft assembly 5 terminations connects with finishing bevel gear cuter 40 in the interaxle differential, and through shaft assembly 5 stage casing splined section connect with shaft space difference speed lock clutch cover 35, and shaft space difference speed is locked clutch cover 35 and can be slided along through shaft assembly 5 axis.
The power of through-drive axle is by the bead input that is connected on the inter-axle differential shell, drives the cross shaft rotating that is fixed on the inter-axle differential shell planetary wheel is produced around conical gear 39,40 revolution, and drive two conical gears 39,40 rotations.Two conical gears 39,40 in the interaxle differential divide the two lines transmission with power: one through conical gear 40, initiatively cylindrical wheel 34, passive cylindrical wheel 36, initiative taper helical wheel 37, by mantle helical wheel 38 and inter-wheel differential 31 and left and right half 29,33 to the wheel transmission; Another finishing bevel gear cuter 39 in the between centers diff, through shaft assembly 5 are to the rear driving axle transmission.Initiatively splined section and the through shaft assembly 5 of cylindrical wheel 34 engage, separate by shaft space difference speed lock clutch cover 35, realize the latch functions of interaxle differential.
Existing through-drive axle has the effect of preferably power distribution and transmission of power in double drive axle, but the penetrable final drive of this kind structure is in order to allow the through shaft assembly connect with interaxle differential, need to be by active and passive cylindrical wheel with interaxle differential and the biasing of initiative taper helical wheel when arranging, in order to allow the through shaft assembly pass through, with transmission of power to back axle.Therefore, have complex structure, manufacturing cost is high, and driving efficiency is low, and cooling and lubricating is bad, and volume is large, quality heavily waits problem.
Summary of the invention
The purpose of this invention is to provide a kind of direct through singl-reduction axle, its compact conformation, low cost of manufacture, driving efficiency are high, cooling and lubricating is good, can improve its usage economy of automobile, keep simultaneously the good crossing ability of automobile.
The present invention utilizes the large and small gear axis line of hyperboloid tooth wheel set mutually vertical but non-intersect, has the characteristics of certain offset, has designed a kind of direct penetrable final drive, replaces original penetrable final drive.
Usually the hand of spiral of biased direction, rotation direction and the gear of hyperboloid tooth wheel set is to stipulate like this: looked to its flank of tooth by the big gear wheel vertex of a cone, and make miniature gears be in the right side, when at this moment if miniature gears is above the big gear wheel horizontal center line, it then is upper offset, if miniature gears below the big gear wheel horizontal center line time, then is below-center offset.When the rotation direction of judgement gear is cw or conter clockwise, be to be looked to the vertex of a cone of gear by the back side of gear.When judging the hand of spiral of gear, be to be looked to its flank of tooth by the vertex of a cone of gear, if the bending direction of the gear teeth then is called right-hand teeth from its small end to holding greatly when moving towards for cw, then be called left-hand teeth when conter clockwise moves towards.
When automotive transmission was arranged, usually drive axle adopted hyperboloid tooth wheel set direct-drive, was that clockwise direction rotates as the active skew bevel wheel of input end, can only be left-hand teeth, and below-center offset is arranged.The change-speed box output end position that generally is connected on the driving engine is all higher, and input end position lower (under the bridge line of centers) when being used to general formula vehicle bridge input end and adopting below-center offset is to cause that to connect the change-speed box mouth larger with the shaft universal-joint angle of being used to general formula bridge input end like this.Generally when automotive transmission designed, the shaft universal-joint angle of cut must not be greater than 6 degree.Therefore, initiatively skew bevel wheel is left-hand teeth, and the general formula vehicle bridge of being used to that below-center offset is arranged is inapplicable for most of vehicles.
Direct through singl-reduction axle of the present invention comprises axle housing, is located at wheel hub and drg on axle housing left end and the right-hand member, is connected in the direct penetrable final drive at axle housing middle part; Be provided with an inter-wheel differential in the front case of described direct penetrable final drive, an end that is located at left half axle in the axle housing and right axle shaft respectively with inter-wheel differential in left half axle gear, right axle shaft gear cooperate connection, the other end of left half axle and right axle shaft cooperates connection with the wheel hub that is installed in two ends, the axle housing left and right sides; On described inter-wheel differential, by Bolt Connection passive skew bevel wheel is arranged;
Be provided with an interaxle differential in the rear housing of described direct penetrable final drive; One through shaft is positioned at the top of described left half axle and perpendicular, one end of this through shaft cooperates connection with axle housing, the other end of this through shaft passes the active skew bevel wheel of a side band beam barrel and stretches into and cooperates connections with the first finishing bevel gear cuter in the interaxle differential, and the second interior finishing bevel gear cuter of an end of the described and beam barrel that the active skew bevel wheel is integrated and interaxle differential is connected; Described active skew bevel wheel is the dextrorotation gear, and with described inter-wheel differential on the engagement of passive skew bevel wheel.
Interaxle differential in the described rear housing that is located at direct penetrable final drive, the differential cover that comprises the differential gear box that is integrated with input shaft, connects by bolt and differential gear box, the first finishing bevel gear cuter and the second finishing bevel gear cuter that cooperate the center cross that is connected in the differential gear box, planetary wheel that cooperation is connected in cross-member ends, be located on differential cover and the input shaft and mesh with planetary wheel; Also comprise cooperating the deep groove ball bearing, the cooperation that are connected in the input shaft neck to be connected in input shaft input end flange, this input end flange is installed on the rear housing by oil seal seat, oil sealing and flange jam nut.
The front end of described active skew bevel wheel is connected on the front case by cylindrical roller bearing cooperation; Initiatively the rear end of skew bevel wheel is connected on the front case by the first group of tapered roller bearing cooperation that is contained on the bearing seat; Described first group of tapered roller bearing, the power-transfer clutch toothholder that connects with skew bevel wheel spline fitted initiatively and be fixed on the active skew bevel wheel axle journal with the jam nut of active skew bevel wheel thread connection.
Be provided with the thrust brake of the passive skew bevel wheel skew of restriction at front case.
The shaft space difference speed that is provided with the control interaxle differential at rear housing is locked, and the shaft space difference speed lock reaches the sliding gear collar that connects with the differential cover spline fitted by shift fork and moves axially.When sliding gear collar moves when connecting with the male splines of power-transfer clutch toothholder, input shaft combines as a whole with skew bevel wheel initiatively, synchronized rotation, thus realize the latch functions of interaxle differential.
Described inter-wheel differential two ends are installed on the front case by second group of tapered roller bearing.
Described passive skew bevel wheel connects with inter-wheel differential by bolt.
Described front case connects with rear housing by bolt.
Beneficial effect of the present invention:
(1) compare with existing penetrable final drive, directly penetrable final drive has reduced cylindrical gear pair, thereby has simplified drive mechanism, has improved the economy of driving efficiency and use, has also realized simultaneously the lightweight of direct penetrable final drive;
(2) because input shaft, through shaft assembly and initiatively skew bevel wheel coaxial line rotation so will no longer bear the effect of additional axial force and diametral load, have prolonged service life;
In sum, simple in structure, low cost of manufacture that the present invention has, the characteristics such as driving efficiency is high, and lubrication is effective, and quality is light, good manufacturability, and is easy to maintenance have improved car load reliability of service and economy.
Description of drawings
Fig. 1 is outside drawing of the present invention;
Fig. 2 is the birds-eye view (part sectional view) of Fig. 1;
Fig. 3 is the existing multi-axle heavy type automobile through bridge outside drawing that singly subtracts commonly used;
Fig. 4 is the plan structure scheme drawing of Fig. 3.
The specific embodiment
Now by reference to the accompanying drawings the present invention is described in further detail:
Referring to Fig. 1 and Fig. 2, shown direct through singl-reduction axle comprises axle housing 1, is located at wheel hub 2 and drg 4 on axle housing 1 left end and the right-hand member, is connected in the direct penetrable final drive 3 at axle housing 1 middle part; Be provided with an inter-wheel differential 31 in the front case 6 of described direct penetrable final drive 3, an end that is located at left half axle 29 in the axle housing 1 and right axle shaft 33 respectively with inter-wheel differential 31 in left half axle gear, right axle shaft gear cooperate connection, the other end of left half axle 29 and right axle shaft 33 cooperates connection with the wheel hub 2 that is installed in two ends, axle housing 1 left and right sides; On described inter-wheel differential 31, by Bolt Connection passive skew bevel wheel 72 is arranged;
Be provided with an interaxle differential in the rear housing 8 of described direct penetrable final drive 3; One through shaft 5 is positioned at the top of described left half axle 29 and perpendicular, one end of this through shaft 5 cooperates connection with axle housing 1, the other end of this through shaft 5 passes the active skew bevel wheel 27 of a side band beam barrel and stretches into and cooperates connections with the first finishing bevel gear cuter 15 in the interaxle differential, and the second interior finishing bevel gear cuter 18 of an end of the described and beam barrel that active skew bevel wheel 27 is integrated and interaxle differential is connected; Described active skew bevel wheel 27 is the dextrorotation gear, and with described inter-wheel differential 31 on 72 engagements of passive skew bevel wheel.Directly be used to general formula vehicle bridge input end position and be in axle housing 1 horizontal center line top, can effectively reduce the shaft universal-joint angle of cut, satisfy the requirement of car transmissions design arrangement.
Interaxle differential in the described rear housing that is located at direct penetrable final drive 38, the differential cover 19 that comprises the differential gear box that is integrated with input shaft 14, connects by bolt and differential gear box, the first finishing bevel gear cuter 18 and the second finishing bevel gear cuter 15 that cooperate the center cross 17 that is connected in the differential gear box, planetary wheel 16 that cooperation is connected in center cross 17 ends, be located on differential cover 19 and the input shaft 14 and mesh with planetary wheel 16; Also comprise cooperating the deep groove ball bearing 9, the cooperation that are connected in input shaft 14 necks to be connected in input shaft 14 input end flanges 12, this input end flange 12 is installed on the rear housing 8 by oil seal seat 10, oil sealing 11 and flange jam nut 13.
The front end of described active skew bevel wheel 27 is connected on the front case 6 by a cylindrical roller bearing 28 cooperations; Initiatively the rear end of skew bevel wheel 27 is installed on the front case 6 by first group of tapered roller bearing 25,26 horseback riding types that are contained on the bearing seat 24; Described first group of tapered roller bearing 25,26, the power-transfer clutch toothholder 23 that connects with skew bevel wheel 27 spline fitted initiatively and be fixed on active skew bevel wheel 27 axle journals with the jam nut 20 of active skew bevel wheel 27 thread connection.
The shaft space difference speed that is provided with the control interaxle differential at rear housing 8 is locked, and the shaft space difference speed lock reaches the sliding gear collar 21 that connects with differential cover 19 spline fitted by shift fork 22 and moves axially.When sliding gear collar 21 moves when connecting with the male splines of power-transfer clutch toothholder 23, both input shaft 14 and skew bevel wheel 27 were initiatively combined as a whole, synchronized rotation, thus realize the latch functions of interaxle differential.
For preventing that passive skew bevel wheel 72 from producing moderate finite deformation under large load, be provided with at front case 6 and can limit passive skew bevel wheel 72 because being subjected to axial force to produce the thrust brake 7 of skew, the outer rim back side of passive skew bevel wheel 72 is supported.Thrust brake 7 passes through thread connection with front case 6, can regulate the gap with passive skew bevel wheel 72 outer rim backs.
Described inter-wheel differential 31 two ends are installed on the front case 6 by second group of tapered roller bearing 30,32.
Described passive skew bevel wheel 72 connects with inter-wheel differential 31 by bolt.
Described front case 6 connects with rear housing 8 by bolt.
The present invention can make main reduction gear weight lighter owing to the cylindrical gear pair that has reduced in the existing penetrable final drive structure; Owing to simplified drive mechanism, but its driving efficiency of Effective Raise, energy-saving and emission-reduction, improve its its usage economy; Because input shaft, through shaft and initiatively the skew bevel wheel coaxial line rotate, they will no longer bear the effect of additional axial force and diametral load, but Effective Raise its service life; If middle back axle all adopts this upper offset structure, the transmission shaft between middle back axle is on the same level line, be conducive to work and the layout of transmission shaft.If all adopt this upper offset structure at middle back axle, the transmission shaft between middle back axle is on the same level line, be conducive to work and the layout of transmission shaft.
Claims (8)
1. direct through singl-reduction axle comprises axle housing (1), is located at wheel hub (2) and drg (4) on axle housing (1) left end and the right-hand member, is connected in the direct penetrable final drive (3) at axle housing (1) middle part; Be provided with an inter-wheel differential (31) in the front case (6) of described direct penetrable final drive (3), an end that is located at left half axle (29) in the axle housing (1) and right axle shaft (33) respectively with inter-wheel differential (31) in left half axle gear, right axle shaft gear cooperate connection, the other end of left half axle (29) and right axle shaft (33) cooperates connection with the wheel hub (2) that is installed in axle housing (1) two ends, the left and right sides; Upward by Bolt Connection passive skew bevel wheel (72) is arranged at described inter-wheel differential (31); It is characterized in that:
Be provided with an interaxle differential in the rear housing (8) of described direct penetrable final drive (3); One through shaft (5) is positioned at the top of described left half axle (29) and perpendicular, one end of this through shaft (5) cooperates connection with axle housing (1), the other end of this through shaft (5) passes the active skew bevel wheel (27) of a side band beam barrel and stretches into and cooperates connections with the first finishing bevel gear cuter (15) in the interaxle differential, and interior the second finishing bevel gear cuter (18) of an end of the described and beam barrel that active skew bevel wheel (27) is integrated and interaxle differential is connected; Described active skew bevel wheel (27) is the dextrorotation gear, and with described inter-wheel differential (31) on passive skew bevel wheel (72) engagement.
2. direct through singl-reduction axle according to claim 1, it is characterized in that: the described interior interaxle differential of rear housing (8) that is located at direct penetrable final drive (3) comprises the differential gear box that is integrated with input shaft (14), the differential cover (19) that connects with differential gear box by bolt, cooperate the center cross (17) that is connected in the differential gear box, cooperate the planetary wheel (16) that is connected in center cross (17) end, be located at differential cover (19) and input shaft (14) upper and with the first finishing bevel gear cuter (18) and second finishing bevel gear cuter (15) of planetary wheel (16) engagement; Also comprise cooperating the deep groove ball bearing (9), the cooperation that are connected in input shaft (14) neck to be connected in input shaft (14) input end flange (12), this input end flange is installed on the rear housing (8) by oil seal seat (10), oil sealing (11) and flange jam nut (13).
3. direct through singl-reduction axle according to claim 1 is characterized in that: the front end of described active skew bevel wheel (27) cooperates by a cylindrical roller bearing (28) and is connected on the front case (6); Initiatively the rear end of skew bevel wheel (27) is connected on the front case (6) by first group of tapered roller bearing (25, the 26) cooperation that is contained on the bearing seat (24); Described first group of tapered roller bearing (25,26), the power-transfer clutch toothholder (23) that connects with skew bevel wheel (27) spline fitted initiatively and be fixed on active skew bevel wheel (27) axle journal with the jam nut (20) of active skew bevel wheel (27) thread connection.
4. according to claim 1,2 or 3 described direct through singl-reduction axles, it is characterized in that: the shaft space difference speed that is provided with the control interaxle differential at rear housing (8) is locked, and the shaft space difference speed lock reaches the sliding gear collar (21) that connects with differential cover (19) spline fitted by shift fork (22) and moves axially.
5. according to claim 1,2 or 3 described direct through singl-reduction axles, it is characterized in that: described inter-wheel differential (31) two ends are installed on the front case (6) by second group of tapered roller bearing (30,32).
6. according to claim 1,2 or 3 described direct through singl-reduction axles, it is characterized in that: described passive skew bevel wheel (72) connects with inter-wheel differential (31) by bolt.
7. according to claim 1,2 or 3 described direct through singl-reduction axles, it is characterized in that: described front case (6) connects with rear housing (8) by bolt.
8. according to claim 1,2 or 3 described direct through singl-reduction axles, it is characterized in that: front case (6) be provided with the restriction passive skew bevel wheel (72) skew thrust brake (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105925438A CN103057406A (en) | 2012-12-30 | 2012-12-30 | Direct through type single-stage reduction drive axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105925438A CN103057406A (en) | 2012-12-30 | 2012-12-30 | Direct through type single-stage reduction drive axle |
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| CN103057406A true CN103057406A (en) | 2013-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012105925438A Pending CN103057406A (en) | 2012-12-30 | 2012-12-30 | Direct through type single-stage reduction drive axle |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107054072A (en) * | 2017-01-26 | 2017-08-18 | 安徽安凯汽车股份有限公司 | One kind is through the overall drive system of the automatically controlled gear ratio of input type |
| CN107215198A (en) * | 2017-06-29 | 2017-09-29 | 徐州重型机械有限公司 | Engineering truck |
| CN108662092A (en) * | 2018-06-29 | 2018-10-16 | 汽解放汽车有限公司 | A kind of electricity drive two grades of speed reducer assemblies of bridge |
| CN108953570A (en) * | 2018-09-11 | 2018-12-07 | 中国重汽集团济南动力有限公司 | A kind of sweeper main reducing gear of drive axle assembly |
| CN109421432A (en) * | 2017-08-23 | 2019-03-05 | 阿文美驰技术有限责任公司 | Vehicle bridge component with driving pinion component |
| CN114483908A (en) * | 2022-01-20 | 2022-05-13 | 泰安航天特种车有限公司 | H-shaped transmission structure for vehicle and vehicle with same |
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| CN202200836U (en) * | 2011-09-02 | 2012-04-25 | 重庆大江工业有限责任公司 | Upward-offset through type driving axle |
| CN202965952U (en) * | 2012-12-30 | 2013-06-05 | 重庆大江工业有限责任公司 | Directly through type single-stage reducing drive axle |
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| GB2399323A (en) * | 2003-03-13 | 2004-09-15 | Graziano Trasmissioni Spa | A live axle particularly for urban buses with low floors |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107054072A (en) * | 2017-01-26 | 2017-08-18 | 安徽安凯汽车股份有限公司 | One kind is through the overall drive system of the automatically controlled gear ratio of input type |
| CN107215198A (en) * | 2017-06-29 | 2017-09-29 | 徐州重型机械有限公司 | Engineering truck |
| CN109421432A (en) * | 2017-08-23 | 2019-03-05 | 阿文美驰技术有限责任公司 | Vehicle bridge component with driving pinion component |
| CN108662092A (en) * | 2018-06-29 | 2018-10-16 | 汽解放汽车有限公司 | A kind of electricity drive two grades of speed reducer assemblies of bridge |
| CN108953570A (en) * | 2018-09-11 | 2018-12-07 | 中国重汽集团济南动力有限公司 | A kind of sweeper main reducing gear of drive axle assembly |
| CN114483908A (en) * | 2022-01-20 | 2022-05-13 | 泰安航天特种车有限公司 | H-shaped transmission structure for vehicle and vehicle with same |
| CN114483908B (en) * | 2022-01-20 | 2023-08-29 | 泰安航天特种车有限公司 | H-shaped transmission structure for vehicle and vehicle with H-shaped transmission structure |
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Application publication date: 20130424 |