CN102874262A - Large power alternating current transmission locomotive and driving device thereof - Google Patents
Large power alternating current transmission locomotive and driving device thereof Download PDFInfo
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- CN102874262A CN102874262A CN2012103976327A CN201210397632A CN102874262A CN 102874262 A CN102874262 A CN 102874262A CN 2012103976327 A CN2012103976327 A CN 2012103976327A CN 201210397632 A CN201210397632 A CN 201210397632A CN 102874262 A CN102874262 A CN 102874262A
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Abstract
The invention provides a driving device applied to a large power alternating current transmission locomotive, comprising a traction motor, a gear box and a gear transmission system, wherein the gear transmission system is accommodated in the gear box; the gear transmission system is specifically a double-stage gear transmission, and comprises a driving gear fixedly arranged on an armature shaft of the traction motor, a driven bull gear used for being fixedly installed on a wheel pair axle, and a gear shaft arranged between the driving gear and the driven bull gear; the driving gear is engaged with a middle bull gear on the gear shaft; and the driven bull gear is engaged with a pinion on the gear shaft. Compared with the driving device of a single-stage gear transmission in the prior art, the double-stage gear transmission system adopted for the scheme realizes a large transmission ratio from the driving gear to the driven bull gear; and the transmission ratio can reach above 10, so that the performance requirements on the low-speed heavy-load alternating current locomotive adopting a high rotation speed alternating current motor are met. On this basis, the invention also provides the large power alternating current transmission locomotive, applying the driving device.
Description
Technical field
The present invention relates to the rail locomotive technical field, particularly a kind of High-power AC drives locomotive and actuating device thereof.
Background technology
At present, domestic all hauling engine actuating devices all adopt single gear transmission, and driving gear adopts jacket-type with cooperating of motor shaft traditionally.
In recent years, along with the fast development of high-power locomotive, the employing of high rotating speed alternating current dynamo, gear multiplication reaches about 7.Such as Fig. 1, shown in Figure 2, typical shipping AC drive locomotive actuating device is by traction electric machine 0112, driving gear 017, large gear ring 018, canine tooth core wheel 019, axle suspension bearing box 013 and gear case 0110 form, driving gear 017 adopts the interference inner cone to cooperate with being connected of motor shaft 015, the 019 direct interference of canine tooth core wheel is to axletree 0111, large gear ring 018 is connected with canine tooth core wheel 019 by bolt, traction electric machine 0112 is connected by axle suspension bearing box 013 with axletree 0111 end, axle suspension bearing box 013 is connected traction electric machine 0112 with axletree with being connected by two axle suspension bearings 011, axle suspension bearing box 013, it is an integral body with the seize transmission that realizes rolling of transmission gear and axletree that gear case is bolted.This seize drive configuration, because motor speed is higher, need to adopt larger gear ratio, but because the restriction of bogie truck gauge, driving gear need adopt internal cone type with cooperating of motor shaft, this has brought the reduction of motor manufacturing and reliability of service, simultaneously, increases transmitting ratio (such as low-speed heave-load freight locomotive, High-power AC drives shunting locomotive etc.) again and then can't satisfy on the structure.
In view of this, demand the Optimal Structure Designing for the actuating device of existing high-power transmission locomotive urgently, to solve low speed High-power AC drives locomotive, owing to adopting high rotating speed alternating current dynamo to need the problem of big speed ratio.
Summary of the invention
For defects, the object of the present invention is to provide a kind of actuating device that is applied to the High-power AC drives locomotive, to solve low speed High-power AC drives locomotive, owing to the big speed ratio problem that adopts high rotating speed alternating current dynamo to need.On this basis, the present invention also provides a kind of High-power AC drives locomotive of using above-mentioned actuating device.
A kind of actuating device that is applied to the High-power AC drives locomotive provided by the invention, comprise: traction electric machine, gear case, and be placed in gear train assembly in the described gear case, it is characterized in that, described gear train assembly is specially the twin-stage gear train assembly, comprise: by the driving gear of described traction electric machine driving, be used for being installed in wheel to the driven big gear wheel on the axletree, and gear wheel shaft between described driving gear and the described driven big gear wheel is set, wherein, gear engagement broad in the middle on described driving gear and the described gear wheel shaft, the pinion on described driven big gear wheel and the described gear wheel shaft.
Preferably, in described projecting plane of taking turns the axis of axletree, described driving gear, described driven big gear wheel and described gear wheel shaft are in triangular distribution.
Preferably, described driving gear directly is installed on the armature shaft of described traction electric machine.
Preferably, also comprise axle suspension bearing box, described axle suspension bearing box by axle suspension bearing encircle in described take turns axletree on.
Preferably, described axle suspension bearing box is specially one-sided axle suspension bearing box.
Preferably, the driving end of described traction electric machine is captiveed joint with described gear case, and the non-transmision end of described traction electric machine is captiveed joint with described axle suspension bearing box.
Preferably, described gear case is specially bearing-type and divides box structure, comprises nowel and top box, and both flask joints are positioned at the plane at the line of centers place of described driven big gear wheel and described gear wheel shaft.
Preferably, described driven big gear wheel specifically comprises gear hub, and is installed in the driven bull gear on the described gear hub; Described gear broad in the middle is specially the gear ring broad in the middle that is installed on the described gear wheel shaft.
Preferably, described axle suspension bearing is the location bearing of whole drive system, has formed rotation and the support system of whole drive system with the drive bearing of non-transmision end bearing, driving end bearing and the described gear case of described traction electric machine.
Preferably, also be provided with motor hanger on the described traction electric machine, be used for being connected with the elasticity of truck frame.
The present invention also provides a kind of High-power AC drives locomotive, comprises car body, bogie truck, and is connected in the actuating device on the described bogie truck, it is characterized in that, described actuating device is specially above-mentioned actuating device.
A kind of actuating device that is applied to the High-power AC drives locomotive provided by the invention, comprise: traction electric machine, gear case and be placed in gear train assembly in the described gear case, this gear train assembly is specially the twin-stage gear transmission, comprise: be installed in driving gear on the armature shaft of traction electric machine, be used for being installed in wheel to the driven big gear wheel on the axletree, and be arranged on gear wheel shaft between driving gear and the driven big gear wheel, wherein, gear engagement broad in the middle on driving gear and the gear wheel shaft, the pinion on driven big gear wheel and the gear wheel shaft.
On electric locomotive, the moment of rotation of the armature shaft of traction electric machine is passed on the gear broad in the middle by the driving gear that is fixedly mounted with thereon, thereby gear shaft rotation, drive the driven big gear wheel that press fit on the axletree by the miniature gears on the gear wheel shaft again, become at last propulsive effort and braking force between wheel and the track.
Therefore, compare to the actuating device of single gear transmission of the prior art, this programme adopts the twin-stage gear train assembly to realize the big speed ratio of driving gear to driven big gear wheel, transmitting ratio can reach more than 10, thereby has satisfied the performance requriements of the low-speed heave-load AC drive locomotive that adopts high rotating speed alternating current dynamo.
In the preferred version of the present invention, in the projecting plane of wheel to the axis of axletree, driving gear, driven big gear wheel and gear wheel shaft are in triangular distribution, novel by this project organization, rationally compact, satisfying on the basis of big speed ratio, further gear case shared space in actuating device, thus be applicable two-axle bogie, also applicable to three axle truck, can be widely used in High-power AC drives freight locomotive or shunting locomotive.
In the another preferred version of the present invention, also comprise axle suspension bearing box, this axle suspension bearing box is encircled on taking turns axletree by axle suspension bearing, and this axle suspension bearing box is specially one-sided axle suspension bearing box.Hang actuating device axle suspension bearing box structure with respect to traditional locomotive seize, the axle suspension bearing box of this actuating device only comprises an axle suspension bearing structure, and integral structure is simple, and quality only is about 1/3rd of traditional axle suspension bearing box structure, and is less to the unsprung weight contribution.
In the another preferred version of the present invention, driven big gear wheel specifically comprises gear hub, and is installed in the driven bull gear on the gear hub; Described gear broad in the middle is specially the middle gear ring that is installed on the gear wheel shaft.This simple and practical, reduced the manufacture difficulty of gear, safeguard for utilization overhaul from now on to provide a great convenience.
Description of drawings
Fig. 1 shows typical seize and hangs the single gear actuating device;
Fig. 2 shows the lateral plan of Fig. 1;
Fig. 3 shows that the master of actuating device looks scheme drawing in the specific embodiment;
Fig. 4 shows the A-A cutaway view of actuating device shown in Fig. 3;
Fig. 5 shows the B-B cutaway view of actuating device shown in Fig. 3;
Fig. 6 shows the C-C cutaway view of actuating device shown in Fig. 3.
Among Fig. 3 to 6:
1 traction electric machine, 11 armature shafts, 112 driving end bearings, 113 non-transmision end bearings, 12 casings, 121 motor hangers, 2 gears case, 21 nowels, 22 top boxs, 31 driving gears, 32 driven big gear wheels, 321 gear hubs, 3211 cylindrical roller bearings, 3211 oil storage holes, 322 driven bull gears, 33 gear wheel shafts, 331 gear rings broad in the middle, 332 miniature gearss, 333 peripheral flange, 334 gear wheel shaft block bearings, 4 are taken turns axletree, 5 axle suspension bearing boxs, 51 axle suspension bearings.
The specific embodiment
Core of the present invention provides a kind of actuating device, to solve low speed High-power AC drives locomotive, owing to the big speed ratio problem that adopts high rotating speed alternating current dynamo to need.On this basis, the present invention also provides a kind of High-power AC drives locomotive of this actuating device of application.
Be without loss of generality, specify the specific embodiment of the actuating device that is applied to the High-power AC drives locomotive below in conjunction with Figure of description.
See also Fig. 3, Fig. 4, Fig. 5 and Fig. 6, wherein, Fig. 3 shows that the master of actuating device looks scheme drawing in the specific embodiment, Fig. 4 shows the A-A cutaway view of actuating device shown in Fig. 3, Fig. 5 shows the B-B cutaway view of actuating device shown in Fig. 3, and Fig. 6 shows the C-C cutaway view of actuating device shown in Fig. 3.
Such as Fig. 3, Fig. 4, Fig. 5 and shown in Figure 6, a kind of actuating device that is applied to the High-power AC drives locomotive provided by the invention, comprise: traction electric machine 1, gear case 2, and be placed in gear train assembly in the described gear case 2, this gear train assembly is specially the twin-stage gear transmission, comprise: by the driving gear 31 of traction electric machine 1 driving, be used for being installed in wheel to the driven big gear wheel 32 on the axletree 4, and be arranged on gear wheel shaft 33 between driving gear 31 and the driven big gear wheel 32, wherein, gear engagement broad in the middle on driving gear 31 and the gear wheel shaft 33, miniature gears 332 engagements on driven big gear wheel 32 and the gear wheel shaft 33.
On electric locomotive, the moment of rotation of the armature shaft 11 of traction electric machine 1 is passed on the gear broad in the middle by the driving gear 31 that is fixedly mounted with thereon, 33 rotations of driven gear axle, driven by the miniature gears 332 on the gear wheel shaft 33 again and press fit over wheel to the driven big gear wheel 32 on the axletree 4, become at last propulsive effort and braking force between wheel and the track.
Therefore, compare to the actuating device of single gear transmission of the prior art, this programme adopts the twin-stage gear train assembly to realize the big speed ratio of driving gear to driven big gear wheel 32, transmitting ratio can reach more than 10, thereby has satisfied the performance requriements of the low-speed heave-load AC drive locomotive that adopts high rotating speed alternating current dynamo.
Further, gauge requirement in view of the High-power AC drives engine truck, in order to expand the Applicable scope of above-mentioned actuating device, as shown in Figure 1, in perpendicular to the projecting plane face of wheel to the axis of axletree 4, the driving gear 31 of the twin-stage gear train assembly in this programme, driven big gear wheel 32 and gear wheel shaft 33 threes are triangularly arranged, wherein, driving gear 31 is installed in the top box 21 of gear case 2 by the armature shaft 11 of traction electric machine 1, be installed in wheel is installed in nowel 21 and top box 22 to the driven big gear wheel 32 on the axletree 4 and gear wheel shaft 33 the plane at flask joint place, novel by this project organization, rationally compact, satisfying on the basis of big speed ratio, further reduced gear case 2 shared space in actuating device, thereby be applicable two-axle bogie, also applicable to three axle truck, can be widely used in High-power AC drives freight locomotive or shunting locomotive.
As shown in Figure 4, the armature shaft 11 of the traction electric machine 1 in this programme is supported on by driving end bearing 112 and non-transmision end bearing 113 on the casing 12 of traction electric machine 1, and the armature shaft 11 of traction electric machine 1 need not in the mounting hole that coupler directly is plugged in gear case 2.Driving gear 31 is set on this armature shaft 11 in the twin-stage gear train assembly, the top box 21 of gear case 2 is as the end cap of driving end bearing 112, the driving end of traction electric machine 1 and gear case 2 are rigidly connected by bolt, again by gear case 2 encircle in wheel to the cylindrical roller bearing 3211 on the gear hub 321 of axletree 4 on.This structure design is inlayed combination with each related components of gear case 2, driving gear 31 and traction electric machine 1 is organic, compact conformation rationally, advanced technology.
Need to prove that under satisfying functional requirement and when assembling inter-module prerequisite that occurrence positions is interfered, driving gear 31 is connected with armature shaft also can adopt and is press-fited the mounting means that is connected with key in this programme.In addition, the armature shaft 11 of traction electric machine 1 does not adopt coupler with driving gear 31 and directly is connected, and has simplified the structure of gear train assembly.Be appreciated that the connection mode of armature shaft 11 and driving gear 31 also can adopt the mode that differs from this programme in this programme, for example, driving gear is installed on the tween drive shaft, connects by rigidity or flexible clutch, with the moment of rotation of transmitting tractive motor again.
In addition, as shown in Figure 5, the gear wheel shaft 33 in the twin-stage gear train assembly in this programme is supported on the gear case 1 by cylindrical roller bearing, miniature gears 332 and driven big gear wheel 32 engagements on the gear wheel shaft 33, and undressed gear teeth end on it forms peripheral flange 333.Gear ring 331 broad in the middle is fixedly connected on the gear broad in the middle that forms on this flange 333 with driving gear 31 engagements by uniform bolt.In addition, driven big gear wheel 32 comprises gear hub 321 and passes through uniform bolt driven bull gear 322 fixedly connected thereto.This simple and practical, reduced the manufacture difficulty of gear, safeguard for utilization overhaul from now on to provide a great convenience.Certainly, the driven bull gear 322 of driven big gear wheel 32 and the gear ring broad in the middle 331 on the gear broad in the middle also can be individually fixed on gear hub 321 and the gear wheel shaft 33 by other modes such as welding.
Certainly, on the basis of satisfying processing technology and requirement of strength, gear broad in the middle and gear wheel shaft 33 can integral body process in this programme, or gear broad in the middle is installed on the gear wheel shaft by welding or key connection mode.In like manner, gear wheel shaft 33 and miniature gears 332 also can form by parts processing, again by welding, be threaded or the key connection mode installs and fixes.In addition, because this programme middle gear axle 33 mainly bears radial weight, therefore adopt cylindrical roller bearing as its backup bearing, certainly, on the basis of satisfying load-carrying capacity requirement and assembly technology requirement, also can adopt the supporting way of other types.
As previously mentioned, the driving end of the traction electric machine 1 in this programme is rigidly connected by bolt and gear case, encircles on taking turns axletree 4 by the cylindrical roller bearing 3211 on the gear hub 321 again.In order to guarantee that the reliable of traction electric machine fixed in the locomotive operation process, this programme also is provided with axle suspension bearing box 5, this axle suspension bearing box 5 by axle suspension bearing 51 encircle in wheel to axletree 4 on an end relative with gear case 2, the non-transmision end of traction electric machine 1 is captiveed joint with this axle suspension bearing box 5 by bolt.Hang actuating device axle suspension bearing box structure with respect to traditional locomotive seize, this actuating device adopts the one-sided axle suspension bearing box structure that only comprises an axle suspension bearing 51, integral structure is simple, quality only is about 1/3rd of traditional axle suspension bearing box structure, less to the unsprung weight contribution, thus satisfied the requirement of modern locomotive to lightness.
Need to prove, satisfying that processing technology requires and in fitting process under the inter-module prerequisite that occurrence positions is interfered, but axle suspension bearing box and traction electric machine unit design namely directly encircle on axletree traction electric machine by axle suspension bearing 51, end cap and sealing arrangement etc. in this programme.In addition, the axle suspension bearing 51 in this programme has specifically adopted deep groove ball bearing, and its bearing radial force can bear certain axial force simultaneously in the vehicle operating process.
Axle suspension bearing is the location bearing of whole drive system in this programme, has formed rotation and the support system of whole drive system with the drive bearing of non-transmision end bearing, driving end bearing and the gear case of traction electric machine.This project organization is compact, and is rationally distributed, thereby satisfied the gauge requirement of truck frame.
In addition, this programme is provided with motor hanger 121 at the casing 12 of traction electric machine 1, and traction electric machine 1 is connected with truck frame elasticity by motor hanger 121, connects by elasticity and has realized movement relation between the two.
Further, as shown in Figure 3, this programme middle gear case 2 is the bearing-type gear case, is divided into nowel 21 and top box 22, is bolted flask joint, and both flask joints are arranged in the plane at line of centers place of driven big gear wheel 32 and gear wheel shaft 33.This structure is convenient to the dismounting of gear case, be appreciated that, on the basis of satisfying technique and requirement of strength, the flask joint of this programme middle gear case also can be arranged in the plane at line of centers place of driving gear 31 and gear wheel shaft 33, or in the plane at the line of centers place of driving gear 31 and driven big gear wheel 32.Certainly, on the basis of satisfying the requirement of function needs and processing technology, can also adopt other modes described in this programme that differ from.
As everyone knows, sealing is the very important part of actuating device with lubrication system, and it directly affects and even determine the in-use performance of whole actuating device.This programme middle gear transmission adopted the bath-splash lubrication structure.As shown in Figure 3, bearing on the gear hub 321 directly is lubricated by lubricating oil splash and landing, offer on the gear hub 321 of driven big gear wheel 32 and take turns the oil storage hole 3211 angled to axletree 4 line of centerss, again start the starting stage bearing without oil dry grinding rotation to prevent actuating device.The lubricated of the backup bearing at gear wheel shaft 33 two ends also is that splashing of lubricating oil lubricated with landing.Non-transmision end bearing 113 on axle suspension bearing 51 in the axle suspension bearing box 5 and the armature shaft 11 of traction electric machine all adopts grease lubrication.Be appreciated that on the basis of satisfying lubricating function needs and assembly technology requirement the lubricated of actuating device middle gear case, traction electric machine and axle suspension bearing box 5 neck bearings can adopt other lubricating methods that differ from this programme.
Further, as shown in Figure 4, the hermetically-sealed construction that this programme middle gear case 2 and wheel have adopted dynamic seal and static seal to be combined to axletree 4.According to the constructional feature of actuating device, by forming the labyrinth type dynamic seal between the seal ring and between seal ring and the gear hub 321, weakened the ability that leaks of lubricating oil, until fully sealing.The hermetically-sealed construction of axle suspension bearing box 5 also adopts the sealing means same with gear case.Outside traction electric machine driving end armature shaft 11, be provided with a labyrinth seal ring and form dynamic seal.The sealing of this actuating device is with lubricated, guaranteed the good lubrication of actuating device and do not leak.
Except front described actuating device, the present invention also provides a kind of High-power AC drives locomotive, comprises car body, bogie truck, and is connected in the actuating device on the described bogie truck, and described actuating device is specially above-mentioned actuating device.Be appreciated that the basic function parts that consist of this High-power AC drives locomotive and principle of work and prior art are basic identical, those skilled in the art can realize fully based on prior art, so this paper repeats no more.
The above only is preferred implementation of the present invention, does not consist of the restriction to protection domain of the present invention.Any any modification of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., all should be included within the claim protection domain of the present invention.
Claims (11)
1. actuating device that is applied to the High-power AC drives locomotive, comprise: traction electric machine, gear case, and be placed in gear train assembly in the described gear case, it is characterized in that, described gear train assembly is specially the twin-stage gear train assembly, comprise: by the driving gear of described traction electric machine driving, be used for being installed in wheel to the driven big gear wheel on the axletree, and gear wheel shaft between described driving gear and the described driven big gear wheel is set, wherein, gear engagement broad in the middle on described driving gear and the described gear wheel shaft, the pinion on described driven big gear wheel and the described gear wheel shaft.
2. a kind of actuating device that is applied to the High-power AC drives locomotive according to claim 1, it is characterized in that, in described projecting plane of taking turns the axis of axletree, described driving gear, described driven big gear wheel and described gear wheel shaft are in triangular distribution.
3. a kind of actuating device that is applied to the High-power AC drives locomotive according to claim 2 is characterized in that described driving gear directly is installed on the armature shaft of described traction electric machine.
4. each described a kind of actuating device that is applied to the High-power AC drives locomotive in 3 according to claim 1 is characterized in that, also comprises axle suspension bearing box, described axle suspension bearing box by axle suspension bearing encircle in described take turns axletree on.
5. a kind of actuating device that is applied to the High-power AC drives locomotive according to claim 4 is characterized in that described axle suspension bearing box is specially one-sided axle suspension bearing box.
6. a kind of actuating device that is applied to the High-power AC drives locomotive according to claim 5 is characterized in that, the driving end of described traction electric machine is captiveed joint with described gear case, and the non-transmision end of described traction electric machine is captiveed joint with described axle suspension bearing box.
7. a kind of actuating device that is applied to the High-power AC drives locomotive according to claim 6, it is characterized in that, described gear case is specially bearing-type and divides box structure, comprise nowel and top box, both flask joints are positioned at the plane at the line of centers place of described driven big gear wheel and described gear wheel shaft.
8. a kind of actuating device that is applied to the High-power AC drives locomotive according to claim 7 is characterized in that, described driven big gear wheel specifically comprises gear hub, and is installed in the driven bull gear on the described gear hub; Described gear broad in the middle is specially the gear ring broad in the middle that is installed on the described gear wheel shaft.
9. the actuating device of High-power AC drives locomotive according to claim 8, it is characterized in that, described axle suspension bearing is the location bearing of whole drive system, has formed rotation and the support system of whole drive system with the drive bearing of non-transmision end bearing, driving end bearing and the described gear case of described traction electric machine.
10. a kind of actuating device that is applied to the High-power AC drives locomotive according to claim 9 is characterized in that, also is provided with motor hanger on the described traction electric machine, is used for being connected with the elasticity of truck frame.
11. a High-power AC drives locomotive comprises car body, bogie truck, and is connected in the actuating device on the described bogie truck, it is characterized in that, described actuating device is specially such as each described actuating device in the claim 1 to 10.
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| CN2012103976327A CN102874262A (en) | 2012-10-18 | 2012-10-18 | Large power alternating current transmission locomotive and driving device thereof |
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| CN2012103976327A CN102874262A (en) | 2012-10-18 | 2012-10-18 | Large power alternating current transmission locomotive and driving device thereof |
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| CN103693050A (en) * | 2014-01-10 | 2014-04-02 | 南车株洲电力机车有限公司 | Narrow-rail steering frame driving device |
| CN104325982A (en) * | 2014-11-27 | 2015-02-04 | 南车资阳机车有限公司 | Traction and power supply redundancy transmission system and control method of electric transmission internal combustion motor train unit |
| CN104675964A (en) * | 2013-11-29 | 2015-06-03 | 北京南口轨道交通机械有限责任公司 | Gear box of meter-gage locomotive |
| CN105090458A (en) * | 2014-05-12 | 2015-11-25 | 中国北车集团大同电力机车有限责任公司 | Driving structure for grease lubrication of pinion bearing of large-shaft locomotive |
| CN109139859A (en) * | 2018-09-11 | 2019-01-04 | 中车北京南口机械有限公司 | Driven gear and power truck |
| CN112572478A (en) * | 2020-12-30 | 2021-03-30 | 中车资阳机车有限公司 | Traction transmission device for locomotive |
| CN113830112A (en) * | 2021-11-09 | 2021-12-24 | 中车株洲电力机车有限公司 | Rail vehicle driving system and bogie |
| CN114435412A (en) * | 2022-01-28 | 2022-05-06 | 大连华锐重工集团股份有限公司 | Axle-holding walking driving speed reducer of large axle load self-propelled metallurgical vehicle |
| WO2022134739A1 (en) * | 2020-12-25 | 2022-06-30 | 中车戚墅堰机车有限公司 | Axle drive system lubricating and sealing structure |
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| CN103693050A (en) * | 2014-01-10 | 2014-04-02 | 南车株洲电力机车有限公司 | Narrow-rail steering frame driving device |
| CN105090458A (en) * | 2014-05-12 | 2015-11-25 | 中国北车集团大同电力机车有限责任公司 | Driving structure for grease lubrication of pinion bearing of large-shaft locomotive |
| CN104325982A (en) * | 2014-11-27 | 2015-02-04 | 南车资阳机车有限公司 | Traction and power supply redundancy transmission system and control method of electric transmission internal combustion motor train unit |
| CN104325982B (en) * | 2014-11-27 | 2016-09-28 | 中车资阳机车有限公司 | The traction of fax Diesel Multiple Unit, power supply redundancy drive system and control method |
| CN109139859A (en) * | 2018-09-11 | 2019-01-04 | 中车北京南口机械有限公司 | Driven gear and power truck |
| WO2022134739A1 (en) * | 2020-12-25 | 2022-06-30 | 中车戚墅堰机车有限公司 | Axle drive system lubricating and sealing structure |
| CN112572478A (en) * | 2020-12-30 | 2021-03-30 | 中车资阳机车有限公司 | Traction transmission device for locomotive |
| WO2022142340A1 (en) * | 2020-12-30 | 2022-07-07 | 中车资阳机车有限公司 | Traction transmission device for locomotive |
| CN112572478B (en) * | 2020-12-30 | 2024-04-16 | 中车资阳机车有限公司 | Traction transmission device for locomotive |
| CN113830112A (en) * | 2021-11-09 | 2021-12-24 | 中车株洲电力机车有限公司 | Rail vehicle driving system and bogie |
| CN113830112B (en) * | 2021-11-09 | 2023-02-10 | 中车株洲电力机车有限公司 | Rail vehicle driving system and bogie |
| CN114435412A (en) * | 2022-01-28 | 2022-05-06 | 大连华锐重工集团股份有限公司 | Axle-holding walking driving speed reducer of large axle load self-propelled metallurgical vehicle |
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Application publication date: 20130116 |