CN104527660B - A kind of electric-machine directly-driven bogie - Google Patents

A kind of electric-machine directly-driven bogie Download PDF

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Publication number
CN104527660B
CN104527660B CN201410773486.2A CN201410773486A CN104527660B CN 104527660 B CN104527660 B CN 104527660B CN 201410773486 A CN201410773486 A CN 201410773486A CN 104527660 B CN104527660 B CN 104527660B
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CN
China
Prior art keywords
bearing
ring
axletree
cap
seal ring
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CN201410773486.2A
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Chinese (zh)
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CN104527660A (en
Inventor
张雄飞
吴梦
樊云杰
马利军
刘伟
史玉杰
王晓明
宋树亮
孙厚礼
蒯荣生
郑静
闫磊
刘玉文
Original Assignee
中车青岛四方机车车辆股份有限公司
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Priority to CN201410773486.2A priority Critical patent/CN104527660B/en
Publication of CN104527660A publication Critical patent/CN104527660A/en
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Publication of CN104527660B publication Critical patent/CN104527660B/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B61RAILWAYS
    • B61CLOCOMOTIVES; MOTOR RAILCARS
    • B61C9/00Locomotives or motor railcars characterised by the type of transmission system used; Transmission systems specially adapted for locomotives or motor railcars
    • B61C9/38Transmission systems in or for locomotives or motor railcars with electric motor propulsion
    • B61C9/46Transmission systems in or for locomotives or motor railcars with electric motor propulsion with motors forming parts of wheels
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B61RAILWAYS
    • B61FRAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F3/00Types of bogies

Abstract

The present invention relates to a kind of electric-machine directly-driven bogie, including framework, traction apparatuss, brake rigging, secondary spring and wheel are provided with architecturally to drive system, the wheel includes the axletree of the centre bore that motor is provided with through the motor to drive system, it is arranged on two wheels of the axletree both sides, the crossbeam that the framework is included both sides curb girder and is fixedly connected with both sides curb girder, supporting plate is fixed with the bottom of the curb girder, the brake rigging is fixed on the supporting plate and curb girder.Present invention achieves motor direct-drive wheel pair, need not install gear-box and shaft coupling, drive system weight is greatly reduced, energy ecology is improve, reduce noise under car.By the fixed form of brake rigging, the load of crossbeam is reduced, makes the stress of framework more reasonable.

Description

A kind of electric-machine directly-driven bogie

Technical field

The present invention relates to a kind of bogie, more particularly to a kind of electric-machine directly-driven bogie.

Background technology

Wheel is one of indispensable most important part of motor car bogie to drive system, the torque driving that motor is produced To axletree, this is the source that motor-car produces traction power to wheel.At present, limited by structure space and motor weight itself, motor Rotating speed is higher, and the torque of generation is less, and takes turns relatively low to rotating speed, needs larger driving moment, and this contradiction is by gear drive System is solving;Gearbox pinion is connected with motor output shaft, and gear wheel is arranged on wheel on axletree, the little torsion that motor is produced Square direct drive wheel after reducing gear train system amplifies moment of torsion is right;Due to increased a gear train assembly, make Infrastructure cost and life-cycle maintenance period cost increase, and reduce transmission efficiency, increased noise, also add wheel-base bogie Greatly, affect the curving performance of motor-car.

The content of the invention

Present invention is primarily aimed at solving the above problems and not enough, there is provided a kind of runnability is good, directly drives car The electric-machine directly-driven bogie of axle.

For achieving the above object, the technical scheme is that:

A kind of electric-machine directly-driven bogie, including framework, are architecturally provided with traction apparatuss, brake rigging, two are , to drive system, the wheel includes motor, the center being provided with through the motor to drive system for spring and wheel The axletree in hole, is arranged on two wheels of the axletree both sides, and the framework includes both sides curb girder and fix with both sides curb girder connecting The crossbeam for connecing, is fixed with supporting plate in the bottom of the curb girder, and the brake rigging is fixed on the supporting plate and curb girder.

Further, the supporting plate is weldingly fixed on curb girder bottom inside, is welded between supporting plate and curb girder bottom Polylith reinforcement.

Further, a fixing point is provided with the side rail inner riser, be provided with three admittedly on the supporting plate Fixed point, the side of the brake rigging are fixed with four fixing point bolts.

Further, a bearing assembly is respectively provided with the motor both sides, one of bearing assembly is positioning Bearing, another bearing assembly are floating bearing.

Further, the bearing assembly includes bearing outer ring, bearing inner race and is arranged on bearing inner race and bearing outer ring Between roller, the bearing outer ring is connected with the end cap of the motor, and the bearing inner race is connected with the axletree interference Connect, the bearing outer ring arranges groove structure, the roller is embedded in the groove.

Further, the side of the bearing inner race of the positioning bearing is provided with bulge-structure, and opposite side arranges a back-up ring, institute The roller both sides for stating positioning bearing are propped up by the bulge-structure and back-up ring respectively.

Further, the cross sectional shape of the bearing inner race of the floating bearing is truncated cone-shaped, and the roller of the floating bearing can Along axletree axial displacement.

Further, an end cap is respectively provided with the motor both sides, the end cap central is provided with axletree The through hole for passing through, the end cap along axletree it is axially extending go out bulge loop structure, the bearing assembly is arranged on bulge loop structure and axletree Between, the bearing outer ring is connected with the bulge loop structure.

Further, inner seal ring and exterior seal ring are respectively arranged with the bearing inner race both sides, the inner seal ring and Exterior seal ring is connected with axletree interference, and the inner seal ring is tightly connected by labyrinth structure with end cap, the exterior seal ring with One closure is tightly connected by labyrinth structure, and the closure is fixedly connected with end cap.

Further, the " T " shape structure of an end section that the end cap is contacted with the inner seal ring, the inner seal ring Cross sectional shape is coordinated with the " T " shape structure, and one jiao of the " T " shape structure is wrapped up by the inner seal ring.

Further, the closure along axletree it is axially extending go out the first dome structure and the second dome structure, the first dome The outer rim of structure props up the bearing outer ring, and outer surface and the exterior seal ring of the second dome structure are sealed by labyrinth structure Connection.

Further, spacer is provided between the first dome structure and bearing outer ring, the side of the spacer props up The bearing outer ring, opposite side and the first dome form touch.

To sum up content, a kind of electric-machine directly-driven bogie of the present invention, realize motor direct-drive wheel pair, without the need for peace Toothing roller box and shaft coupling, greatly reduce drive system weight, improve energy using effect, reduce noise under car. By the fixed form of brake rigging, the load of crossbeam is reduced, makes the stress of framework more reasonable.By arranging locating shaft Hold and floating bearing, discharge the transverse shifting of stator and rotor, reduce the stress between rotor and stator, it is ensured that be straight to drive electricity The performance of machine.By the sealing structure of bearing, bearing is made to possess more preferably sealing effectiveness.

Description of the drawings

Fig. 1 is schematic structural view of the invention;

Fig. 2 is the A faces view of Fig. 1;

Fig. 3 is brake rigging mounting structure schematic diagram of the present invention;

Fig. 4 is structural representation of the present invention wheel to drive system;

Fig. 5 is the I enlarged drawings of Fig. 4;

Fig. 6 is the II enlarged drawings of Fig. 4.

As shown in Figures 1 to 6, motor 1, axletree 2, wheel 3, shell 4, rotor 5, stator 6, left end cap 7, bulge loop knot Structure 7-1, " T " shape structure 7-2, right end cap 8, bulge loop structure 8-1, " T " shape structure 8-2 position bearing 9, floating bearing 10, bearing Outer ring 11, bearing inner race 12, bulge-structure 12-1, roller 13, back-up ring 14, inner seal ring 15, exterior seal ring 16, closure 17, First dome structure 17-1, the second dome structure 17-2, spacer 18, groove 19, sealing ring 20, raised 21, pouring orifice 22 is fixed Bolt 23, fastening bolt 24, framework 25, traction apparatuss 26, brake rigging 27, secondary spring 28, curb girder 29, crossbeam 30, The motor gimbal lever 31, takes turns to axle box 32, primary spring 33, supporting plate 34, reinforcement 35, fixing point 36.

Specific embodiment

The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings:

As depicted in figs. 1 and 2, a kind of rail vehicle electric-machine directly-driven bogie includes framework 25, is arranged on framework 25 Traction apparatuss 26, brake rigging 27, secondary spring 28 and wheel are to drive system.

Framework 25 is H type welded frames, including two curb girders, 29, two crossbeams 30, two crossbeams 30 are welded on curb girder 29 Two curb girders 29 are connected by centre, and curb girder 29 is box welding structure, arranges secondary spring 28 in 29 mid portion of curb girder, and two are Spring 28 adopts air spring.

As shown in figure 3, being fixed with one block of supporting plate 34 in the bottom of curb girder 29, brake rigging 27 is fixed on 34 He of supporting plate On curb girder 29, supporting plate 34 is weldingly fixed on 29 bottom of curb girder, is specifically welded on the position of the bottom near inner side of curb girder 29, that is, leans on The side of nearly traction apparatuss 26, is welded with polylith reinforcement 35, between 29 bottom of supporting plate 34 and curb girder for improving supporting plate 34 Intensity.One fixing point 36 is set on the riser on the inside of curb girder 29, three fixing points 36 is provided with supporting plate 34, is arranged on Fixing point 36 on curb girder 29 is in 29 vertical plates on both sides of curb girder to offer through hole, and the fixing point 36 being arranged on supporting plate 34 is The through hole being opened on supporting plate 34, is provided with four screwed holes, on a side of brake rigging 27 by four spiral shells Bolt is fixed on brake rigging 27 on curb girder 29 and supporting plate 34 through above-mentioned through hole.By the fixation side of brake rigging Formula, reduces the load of crossbeam, makes the stress of framework more reasonable.Brake rigging is tread brake device.

Motor 1 is connected with crossbeam 30 by the motor gimbal lever 31, is taken turns and is arranged wheel to axle box 32 to outside, takes turns to axle box 32 are connected with the end of curb girder 29 by primary spring 33, and primary spring 33 is laminated rubber spring.

As shown in figure 4, wheel includes motor 1, axletree 2 and wheel 3 to drive system, 2 two ends of axletree are fixed respectively One wheel 3, centre bore of the axletree 2 through motor 1, motor 1 are sleeved on axletree 2, hang on motor 1 Wheel is respectively provided with a wheel to axle box 32 on the outside of two wheels 3 between, is taken turns and axle box 32 is passed through primary spring 33 and turned to Framework frame 25 connects.

Motor 1 includes shell 4, rotor 5, stator 6, left end cap 7 and right end cap 8, arranges left end in 4 both sides of shell Lid 7 and right end cap 8, left end cap 7 and right end cap 8 are fixedly connected with shell 4 by fixing bolt 23, left end cap 7 and right end cap 8 Middle be equipped with left and right to insertion manhole.Rotor 5 and stator 6 are set in shell 4, stator 6 is fixedly mounted on On shell 4, rotor 5 is connected with 2 interference fit of axletree.

Motor 1 is magneto, and magneto is sleeved on axletree 2 and can directly drive axletree 2 and rotate, eliminates Gear-box and shaft coupling, make drive system weight saving, improve energy using effect, reduce noise under car.

A bearing assembly is provided between motor 1 and two wheels 3, one of bearing assembly is positioning Bearing 9, another bearing assembly are floating bearing 10.

As shown in Figure 5 and Figure 6, bearing assembly includes bearing outer ring 11, bearing inner race 12 and multiple rollers 13, multiple rollings Son 13 is arranged between bearing outer ring 11 and bearing inner race 12.The bearing outer ring 11 of positioning bearing 9 and the right end cap of motor 1 8 connections, the bearing outer ring 11 of floating bearing 10 are connected with the left end cap 7 of motor 1, and bearing outer ring 11 arranges fluted knot Structure, its cross sectional shape is " recessed " shape structure, and roller 13 is embedded in groove structure and rotates.The axle of positioning bearing 9 and floating bearing 10 Hold inner ring 12 to be connected with 2 interference fit of axletree.It is provided with to the oiling of bearing assembly fuel feeding on left end cap 7 and right end cap 8 Mouth 22.

As shown in figure 5, right end cap 8 along axletree 2 it is axially extending go out bulge loop structure 8-1, the cross sectional shape of right end cap 8 is in " ┠ " Shape, a jiao at the top of right end cap 8 " ┠ " shape are fixedly connected with the shell 4 of motor 1 by fixing bolt 23.Positioning bearing 9 It is arranged between bulge loop structure 8-1 and axletree 2, the bearing outer ring 11 for positioning bearing 9 is connected with the inner surface of bulge loop structure 8-1. Pouring orifice is provided with bulge loop structure 8-1, for internal 9 oiling of positioning bearing.

The bearing inner race 12 of positioning bearing 9 arranges inner seal ring 15 near the side of motor 1, near the one of wheel 3 Side is back-up ring 14, and the opposite side of back-up ring 14 is exterior seal ring 16, and inner seal ring 15 and exterior seal ring 16 are connected with 2 interference of axletree respectively Connect.

The inner seal ring 15 of positioning bearing 9 is tightly connected by labyrinth structure with right end cap 8, right end cap 8 and inner seal ring " T " shape structure 8-2 of one end section of 15 contacts, i.e. " T " shape structure 8-2 in one end of 8 " ┠ " shape bottom of right end cap, interior sealing The cross sectional shape of circle 15 is engaged with " T " shape structure 8-2, and one jiao of " T " shape structure 8-2 is wrapped up by inner seal ring 15, by this Structure makes sealing effectiveness more preferable.

Labyrinth structure is arranged on inner seal ring 15 and the contact surface of right end cap 8, including being arranged on inner seal ring 15 Multiple grooves 19, part recess 19 are arranged on the position contacted with " T " shape structure 8-2 top surface, part recess 19 be arranged on The position of mono- angular contact of " T " shape structure 8-2, arranges sealing ring 20 in the groove 19 contacted with " T " shape structure 8-2 top surface, The another side of sealing ring 20 props up " T " shape structure 8-2 and realizes sealing, and a jiao in " T " shape structure 8-2 arranges raised 21, projection 21 19 fitted seals of groove that mono- jiao of " T " shape structure 8-2 is arranged on inner seal ring 15, make inner seal ring 15 by labyrinth structure With 8 sealing property of right end cap more preferably.

A closure 17, exterior seal ring 16 are additionally provided near the side of wheel 3 in the exterior seal ring 16 of positioning bearing 9 It is tightly connected by labyrinth structure with the closure 17.Closure 17 along axletree 2 it is axially extending go out two dome structures, respectively First dome structure 17-1 and the second dome structure 17-2, the section of closure 17 is in " on " character form structure, the first dome structure The outer rim of 17-1 props up bearing outer ring 11, and outer surface and the exterior seal ring 16 of the second dome structure 17-2 are sealed by labyrinth structure Connection.Closure 17 is arranged on right end cap 8, and closure 17 is solid by fastening bolt 24 with bulge loop structure 8-1 of right end cap 8 Fixed, after fixing, the first dome structure 17-1 of closure 17 compresses bearing outer ring 11.

Spacer 18 is provided between the first dome structure 17-1 and bearing outer ring 11, bearing is propped up in the side of spacer 18 Outer ring 11, opposite side are contacted with the first dome structure 17-1, and when spacer 18 is used to install closure 17, whether observation closure 17 Bearing outer ring 11 is compressed, in the case where spacer 18 is not provided with, if seam is left with bulge loop structure 8-1 after the installation of closure 17 Gap, then illustrate whether closure 17 has compressed bearing outer ring 11, but if not staying gap, then cannot judge closure 17 Bearing outer ring 11 is compressed, if now internally adding spacer 18, can be passed through to adjust the thickness of spacer 18, be made closure 17 leave gap when mounted forever between bulge loop structure 8-1, this assures closure 17 and compress bearing outer ring 11.

The outer surface of the second dome structure 17-2 is tightly connected by labyrinth structure with exterior seal ring 16, in exterior seal ring 16 It is upper that multiple grooves 19 are set, in groove 19, sealing ring 20 is set, the another side of sealing ring 20 props up the second dome structure 17-2 Outer surface realize sealing.

As shown in figure 5, the side of the bearing inner race 12 of positioning bearing 9 is provided with bulge-structure 12-1, bulge-structure is set The side of 12-1 is, near the side of motor 1, to arrange a back-up ring in the opposite side of the bearing inner race 12 of positioning bearing 9 14, the side for arranging back-up ring 14 is near the side of wheel 3.12 cross sectional shape of bearing inner race of positioning bearing 9 is " L " shape, its Bulge-structure 12-1 props up one side of the roller 13 near motor 1, and the cross sectional shape of back-up ring 14 is inverted "L" shaped, and back-up ring 14 blocks With on the bearing inner race 12 of positioning bearing 9, one side of the roller 13 near wheel 3 is propped up, the shape and installation knot of back-up ring 14 Structure on the one hand can make roller 13 can not displacement, on the other hand facilitate 13 installing/dismounting of roller.By the bearing for positioning bearing 9 The cross sectional shape design of inner ring 12 and the setting of back-up ring 14, limit all freedom in addition to roller 13 itself axial rotation Degree so that the roller 13 in positioning bearing 9 can not be axially moved left and right along axletree 2, realize the located lateral of motor.

As shown in fig. 6, left end cap 7 along axletree 2 it is axially extending go out bulge loop structure 7-1, the cross sectional shape of left end cap 7 is in " ┨ " Shape, the one end at the top of left end cap 7 " ┨ " shape are fixedly connected with the shell 4 of motor 1 by fixing bolt 23.Floating bearing 10 It is arranged between bulge loop structure 7-1 and axletree 2, the bearing outer ring 11 of floating bearing 10 is connected with the inner surface of bulge loop structure 7-1. Pouring orifice is provided with bulge loop structure 7-1, for internal 10 oiling of floating bearing.

The both sides of the bearing inner race 12 of floating bearing 10 are respectively arranged with inner seal ring 15 and exterior seal ring 16, inner seal ring 15 near 1 side of motor, exterior seal ring 16 near 3 side of wheel, inner seal ring 15 and exterior seal ring 16 respectively with axletree 2 Interference connects.

The inner seal ring 15 of floating bearing 10 is tightly connected by labyrinth structure with left end cap 7, left end cap 7 and inner seal ring " T " shape structure 7-2 of one end section of 15 contacts, i.e. " T " shape structure 7-2 in one end of 7 " ┨ " shape bottom of left end cap, interior sealing The cross sectional shape of circle 15 is engaged with " T " shape structure 7-2, and one jiao of " T " shape structure 7-2 is wrapped up by inner seal ring 15, by this Structure makes sealing effectiveness more preferable.

Labyrinth structure is arranged on inner seal ring 15 and the contact surface of left end cap 7, including being arranged on inner seal ring 15 Multiple grooves 19, part recess 19 are arranged on the position contacted with " T " shape structure 7-1 top surface, part recess 19 be arranged on The position of mono- angular contact of " T " shape structure 7-1, arranges sealing ring 20 in the groove 19 contacted with " T " shape structure 7-1 top surface, The another side of sealing ring 20 props up " T " shape structure 7-1 and realizes sealing, and a jiao in " T " shape structure 7-1 arranges raised 21, projection 21 19 fitted seals of groove that mono- jiao of " T " shape structure 7-1 is arranged on inner seal ring 15, make inner seal ring 15 by labyrinth structure With 7 sealing property of left end cap more preferably.

A closure 17, exterior seal ring are additionally provided near the side of wheel 3 in the exterior seal ring 16 of floating bearing 10 16 are tightly connected by labyrinth structure with the closure 17.Closure 17 along axletree 2 it is axially extending go out two dome structures, respectively For the first dome structure 17-1 and the second dome structure 17-2, the section of closure 17 is in " on " character form structure, the first dome knot The outer rim of structure 17-1 props up bearing outer ring 11, and the outer surface of the second dome structure 17-2 is close by labyrinth structure with exterior seal ring 16 Envelope connection.Closure 17 is arranged on left end cap 7, and closure 17 is solid by fastening bolt 24 with bulge loop structure 7-1 of left end cap 7 Fixed, after fixing, the first dome structure 17-1 of closure 17 compresses bearing outer ring 11.

Spacer 18 is provided between the first dome structure 17-1 and bearing outer ring 11, bearing is propped up in the side of spacer 18 Outer ring 11, opposite side are contacted with the first dome structure 17-1, and when spacer 18 is used to install closure 17, whether observation closure 17 Bearing outer ring 11 is compressed, in the case where spacer 18 is not provided with, if seam is left with bulge loop structure 7-1 after the installation of closure 17 Gap, then illustrate whether closure 17 has compressed bearing outer ring 11, but if not staying gap, then cannot judge closure 17 Bearing outer ring 11 is compressed, if now internally adding spacer 18, can be passed through to adjust the thickness of spacer 18, be made closure 17 leave gap when mounted forever between bulge loop structure 7-1, this assures closure 17 and compress bearing outer ring 11.

The outer surface of the second dome structure 7-2 is tightly connected by labyrinth structure with exterior seal ring 16, in exterior seal ring 16 It is upper that multiple grooves 19 are set, in groove 19, sealing ring 20 is set, the another side of sealing ring 20 props up the second dome structure 17-2 Outer surface realize sealing.

As shown in fig. 6, the cross sectional shape of the bearing inner race 12 of floating bearing 10 is in truncated cone-shaped, roller 13 is upper with truncated cone-shaped Surface contacts, and roller 13 can be axially moved left and right along axletree 2, and 12 cross sectional shape of bearing inner race of floating bearing 10 is selected as two There is a truncated cone-shaped of chamfering side, and not simple surface is the cylinder of straight line, predominantly prevent because of straight line manufacturing tolerance or There is burr after processing, make the left and right displacement of roller 13 be obstructed.As the suit of motor 1 is suspended on axletree 2, motor 1 own wt makes axletree 2 have certain amount of deflection, so allow for the rotor 5 that is connected with 2 interference of axletree and with motor housing 4 Produce stress between the stator 6 being fixedly connected, the roller 13 of floating bearing 10 bearing outer ring 11, sealing together with floating bearing 10 Lid 17 and left end cap 7 produce left and right displacement in the lump between bearing inner race 12, discharge the transverse shifting of stator 6 and rotor 5, reduce Stress between rotor 5 and stator 6, it is ensured that the performance of direct driving motor.

The setting shape of left end cap 7 and closure 17 and with floating bearing 10 and the contact form of interior exterior seal ring, make Left end cap 7, closure 17 can be with the lateral displacements of roller 13, so as to discharge the stress between rotor 5 and stator 6.

The exterior seal ring 16 of floating bearing 10 adopts 20 form of sealing ring with the labyrinth structure of closure 17, and does not adopt convex 21 forms coordinated with groove 19 are played, also for facilitating the lateral displacement of left end cap 7, closure 17 with roller 13.

As described above, combining the plan content given by accompanying drawing, similar technical scheme can be derived.In every case it is not de- From the content of technical solution of the present invention, any simple modification above example made according to the technical spirit of the present invention, etc. With change and modification, still fall within the range of technical solution of the present invention.

Claims (9)

1. a kind of electric-machine directly-driven bogie, including framework, is architecturally provided with traction apparatuss, brake rigging, two is bullet , to drive system, the wheel includes motor, the centre bore being provided with through the motor to drive system for spring and wheel Axletree, be arranged on two wheels of the axletree both sides, the framework is included both sides curb girder and is fixedly connected with both sides curb girder Crossbeam, it is characterised in that:Be fixed with supporting plate in the bottom of the curb girder, the brake rigging be fixed on the supporting plate and On curb girder;
A bearing assembly is respectively provided with the motor both sides, one of bearing assembly is positioning bearing, another Bearing assembly is floating bearing;
The bearing assembly includes bearing outer ring, bearing inner race and the roller being arranged between bearing inner race and bearing outer ring, The bearing outer ring is connected with the end cap of the motor, and the bearing inner race is connected with the axletree interference, the bearing Outer ring arranges groove structure, and the roller is embedded in the groove;
The cross sectional shape of the bearing inner race of the floating bearing is truncated cone-shaped, and the roller of the floating bearing can be along axletree axial direction position Move.
2. a kind of electric-machine directly-driven bogie according to claim 1, it is characterised in that:The supporting plate is weldingly fixed on curb girder Bottom inside, is welded with polylith reinforcement between supporting plate and curb girder bottom.
3. a kind of electric-machine directly-driven bogie according to claim 1, it is characterised in that:Set on the side rail inner riser A fixing point is equipped with, three fixing points, the side of the brake rigging and four fixations are provided with the supporting plate Point bolt is fixed.
4. a kind of electric-machine directly-driven bogie according to claim 1, it is characterised in that:The bearing inner race of the positioning bearing Side be provided with bulge-structure, opposite side arranges a back-up ring, and the roller both sides of the positioning bearing raised are tied by described respectively Structure and back-up ring are propped up.
5. a kind of electric-machine directly-driven bogie according to claim 1, it is characterised in that:Distinguish in the motor both sides One end cap is set, and the end cap central is provided with the through hole that axletree is passed through, the end cap along axletree it is axially extending go out it is convex Ring structure, the bearing assembly are arranged between bulge loop structure and axletree, and the bearing outer ring is connected with the bulge loop structure.
6. a kind of electric-machine directly-driven bogie according to claim 1, it is characterised in that:Distinguish in the bearing inner race both sides Be provided with inner seal ring and exterior seal ring, the inner seal ring and exterior seal ring are connected with axletree interference, the inner seal ring with End cap is tightly connected by labyrinth structure, and the exterior seal ring is tightly connected by labyrinth structure with a closure, the sealing Lid is fixedly connected with end cap.
7. a kind of electric-machine directly-driven bogie according to claim 6, it is characterised in that:The end cap and the inner seal ring The " T " shape structure of one end section of contact, the cross sectional shape of the inner seal ring is coordinated with the " T " shape structure, described interior close One jiao of the " T " shape structure is wrapped up by seal.
8. a kind of electric-machine directly-driven bogie according to claim 6, it is characterised in that:The closure axially prolongs along axletree The first dome structure and the second dome structure are stretched out, the outer rim of the first dome structure props up the bearing outer ring, the second dome knot The outer surface of structure is tightly connected by labyrinth structure with the exterior seal ring.
9. a kind of electric-machine directly-driven bogie according to claim 8, it is characterised in that:In the first dome structure and axle Spacer is provided between bearing outer-ring, the side of the spacer props up the bearing outer ring, opposite side and the first dome structure Contact.
CN201410773486.2A 2014-12-15 2014-12-15 A kind of electric-machine directly-driven bogie CN104527660B (en)

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