CN102963387A - Direct-driving type bogie structure - Google Patents
Direct-driving type bogie structure Download PDFInfo
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- CN102963387A CN102963387A CN2012102383235A CN201210238323A CN102963387A CN 102963387 A CN102963387 A CN 102963387A CN 2012102383235 A CN2012102383235 A CN 2012102383235A CN 201210238323 A CN201210238323 A CN 201210238323A CN 102963387 A CN102963387 A CN 102963387A
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Abstract
The invention relates to a direct-driving type bogie structure. A permanent magnetic motor is elastically suspended by an elastic driving device, so that torque can be transferred, the transmission efficiency is improved, the weight of a driving mechanism is reduced; and traction force and braking force are directly transmitted to a vehicle body and are not transmitted through a bogie frame, so that the stressing condition of the a bogie frame is optimized, the length of a traction pull rod is not limited by the bogie frame structure, the traction pull rod can be longer, diallel additional rigidity caused by the traction pull rod is reduced, and the taking comfort of a vehicle is improved. The motor is suspended between wheel pairs, so that the axle distance is reduced, the bogie can pass a shorter curve, has higher critical speed, and has good submissiveness to unevenness of a road.
Description
Technical field
The present invention relates to a kind of direct-drive type bogie truck, belong to the rail vehicle truck technical field.
Background technology
It is the distortion irregularity that vertical flexible suspension overcomes circuit that traditional bogie truck generally adopts H type framework, rigid beam, dependence one, rigid frame at wheel when driving to transition curve, because the superelevation of curve track, bear than the high pulling torque effect part, and the speed of a motor vehicle is when higher, and framework and is that the junction between the vertical flexible suspension also can be subject to greater impact power; In the structure design of conventional bogie, motor is installed on the framework, for allow motor and wheel to dynamic disturbances and transmission moment the mechanisms such as complicated shaft coupling and gear case need to be set, this bogie structure is complicated, production efficiency is low, and the wheel of this bogie truck is to wheelbase is large, weight is large, make bogie truck little curving performance, energy saving, the performance figure such as compliance of circuit irregularity are difficult to remarkable lifting.
Find through retrieval, Chinese invention patent CN101565049 B, it discloses a kind of steering frame of hinged frame linear electric motor, and two T-shaped frameworks are hinged by rubber nodal point and center crossbeam respectively; The center crossbeam sidepiece links to each other with the traction crossbeam on top by longitudinal tie, the traction crossbeam connects respectively the first curb girder, the second curb girder by oil-pressure damper, center crossbeam links to each other with linear electric motors by drawing pull bar, the draw that this design can improve bogie truck transmitting tractive power and improve linear electric motors.
When wheel when driving to transition curve, two hinge-points can bear larger moment of torsion and twist in right amount, thereby framework is played a protective role.The visual contrast file is realized the flexibility of bogie truck by the rubber nodal point of hinged place, the different rubber nodal point of bogie truck needs design according to different automobile types, this structure uses rubber nodal point to realize reversing, the parameter discrete properties of rubber nodal point is larger, along with variation of ambient temperature, the performance perameter of rubber nodal point often differs larger with design value, simultaneously the easy season cracking of rubber, reliability is relatively poor, and service life is relatively short.And motor still is installed on the bogie truck, takes turns greatly to wheelbase, fails to significantly improve the bogie truck properties.
Summary of the invention
Technical matters to be solved by this invention is, overcomes the above-mentioned deficiency of prior art, and a kind of direct-drive type bogie truck is provided.
In order to solve above technical matters, direct-drive type bogie truck provided by the invention, composition comprises: truck frame, lay respectively at two magneto-electric machines of truck frame front side and rear side, be arranged at the air bellow of truck frame top, be arranged at the front and back wheel pair of truck frame below, described truck frame has left frame, left side frame, it is characterized in that: describedly take turns right axletree and pass the central through hole that magneto-electric machine is provided with, the output shaft at magneto-electric machine two ends is fixed by two right wheels of elastic transmission device and wheel respectively, make magneto-electric machine hang on the wheel between, connect by longitudinal rod between the shell of two magneto-electric machines, described air bellow top across be provided with one and be used for the rebound of captiveing joint with car body, the middle position of rebound lower surface is equipped with a drawing pull bar seat, the drawing pull bar seat is equipped with traction body, the two ends, the left and right sides of described traction body respectively are equipped with a drawing pull bar, wherein a drawing pull bar is connected with the magneto-electric machine shell of front side, and another root drawing pull bar is connected with the magneto-electric machine shell of rear side.
The present invention further improves and is:
(1), described elastic transmission device comprises that two ends connect respectively the flange of magneto-electric machine output shaft and wheel, the inner of described flange has the axle sleeve that cooperates with the magneto-electric machine output shaft, the inner end surface of wheel is fixed in by attaching parts in the flange outer end, has the bolt of rubber arthrosis to captive joint by cover between described attaching parts and the wheel.
(2), the first end of described attaching parts and wheel offer circular hole, the circular hole of offering on the wheel is around the peripheral distribution of axletree, cover has the double-screw bolt of rubber arthrosis to pass the circular hole of the circular hole of wheel and attaching parts first end and by nut wheel and attaching parts is fixed, the second end of described attaching parts arranges pin, described pin passes the circular hole that the flange outer end is offered, and flange is hung on the described pin.Rubber arthrosis self possesses appropriate elastic deformation, the pin of attaching parts the second end cooperates with flange outer end circular hole simultaneously, realize a small amount of rotation, provide vehicle vertical and longitudinally displacement and vibration damping, the axial elasticity distortion of rubber arthrosis and deflection distortion and attaching parts one provide displacement and the vibration damping of axial direction.
(3), be provided with on the described magneto-electric machine shell for the first mount pad that longitudinal rod is installed, be used for installing the second mount pad of drawing pull bar, described longitudinal rod two ends are hinged with the first mount pad of front side and rear side magneto-electric machine shell respectively, one end of described drawing pull bar and the second mount pad of magneto-electric machine shell are hinged, the other end and traction body are hinged, described traction body and drawing pull bar seat are hinged, two drawing pull bar and traction body consist of Z-type drawing pull bar mechanism, described Z-type drawing pull bar mechanism is positioned at the top of flexible crossbeam, and longitudinal tie is positioned at the below of flexible crossbeam.The setting of longitudinal rod is in order to prevent magneto-electric machine upset, and longitudinal rod and the first mount pad are hinged, makes the swing that magneto-electric machine can be in scope by a small margin; Longitudinal rod and drawing pull bar lay respectively at the up and down both sides of flexible crossbeam, do not interfere mutually when guaranteeing its normal operation; Adopt the drawing pull bar mechanism of Z-type that the tractive force of two magneto-electric machines can be loaded more uniformly to car body (rebound).
(4), direct-drive type bogie truck of the present invention also has the stop gear for restriction rebound transverse shifting amplitude, described stop gear comprises the horizontal stop seat at the left and right bogie side frame of being fixed on of the symmetrical elastic buffer rubber backstop mount pad that is fixed on the rebound lower surface, symmetry middle part, on the described elastic buffer rubber backstop mount pad elastic buffer rubber backstop is installed, when rebound moves laterally to end position, the elastic buffer rubber backstop of rebound offset direction one side is withstood the horizontal stop seat of respective side, and it is spacing that rebound is obtained.
(5), also to have the L-type anti-side rolling torsion rod, two that two ends connect respectively bogie side frame and rebound be that vertical damper, two is lateral damper to direct-drive type bogie truck of the present invention.
Among the present invention, elastic transmission device makes magneto-electric machine obtain resilient suspension, and the energy carry-over moment has improved driving efficiency simultaneously, alleviates transmission device weight; The drawing pull bar two ends connect respectively magneto-electric machine shell and the traction body that is installed under the rebound, the transmission of longitudinal traction power and braking force is provided, so that tractive force and braking force are directly passed to car body (being positioned on the rebound of rigidity of vehicle body), and do not transmit by truck frame, optimized the stressing conditions of truck frame, simultaneously so that the length of drawing pull bar is not limited by framework structure, thereby drawing pull bar can be done longlyer, what reduced that drawing pull bar brings two is additional stiffness, improves the travelling comfort of vehicle.
As seen, the present invention is installed on wheel to upper with magneto-electric machine elasticity, thereby reduces significantly wheelbase, improving driving efficiency, then is optimal design, makes bogie truck can pass through less curve, higher critical speed is arranged again, simultaneously to the good compliance of having of circuit irregularity.
Description of drawings
Fig. 1 is the plan structure scheme drawing of direct-drive type bogie truck of the present invention.
Fig. 2 is the main TV structure scheme drawing of direct-drive type bogie truck of the present invention.
Fig. 3 is the right TV structure scheme drawing of direct-drive type bogie truck of the present invention.
Fig. 4 is the structural representation of looking up of direct-drive type bogie truck of the present invention.
Fig. 5 is the perspective view of direct-drive type bogie truck of the present invention.
Fig. 6 is the framework structure scheme drawing of direct-drive type bogie truck of the present invention.
Fig. 7 is the framework cross-sectional schematic of direct-drive type bogie truck of the present invention.
Fig. 8 is magneto-electric machine and the elastic transmission device structural representation of direct-drive type bogie truck of the present invention.
Fig. 9 is the flange plate structure scheme drawing of direct-drive type bogie truck Elastic driving device of the present invention.
Figure 10 is the perspective view of direct-drive type bogie truck of the present invention (removing rebound).
Figure 11 is direct-drive type bogie flexible crossbeam end view drawing of the present invention.
Number in the figure is schematically as follows: 1-left frame, 2-wheel, 3-elastic transmission device, the 4-magneto-electric machine, 4 ＇-magneto-electric machine, 5-drawing pull bar, 5 ＇-drawing pull bar, 6-longitudinal rod, 7-rebound, the 8-left side frame, 9-air bellow, 10-rubber pad, the 11-axle box, 12-anti-side rolling torsion rod, the flexible crossbeam of 13-, the 14-flange, 15-rubber arthrosis, 16-attaching parts, the 17-axle sleeve, 18-drawing pull bar seat, 19-traction body, 20-two is lateral damper, 21-two is vertical damper, the horizontal stop seat of 22-, 23-elastic buffer rubber backstop, 24-the first mount pad, 25-the second mount pad, 26-axle box pivoted arm node installation seat, 27-anti-side rolling torsion rod mount pad, 28-two is the lateral damper mount pad, 29-elastic buffer rubber backstop mount pad.
The specific embodiment
Embodiment one
Extremely shown in Figure 10 such as Fig. 1, present embodiment direct-drive type bogie truck, composition comprises: truck frame, lay respectively at truck frame front side and two magneto-electric machine 4(4 of rear side ＇), be arranged at the air bellow 9 of truck frame top, be arranged at the front and back wheel pair of truck frame below, truck frame has left frame 1, left side frame 8, take turns right axletree and pass magneto-electric machine 4(4 ＇) central through hole that is provided with, magneto-electric machine 4(4 ＇) output shaft at two ends is fixing by right two wheels 2 of elastic transmission device 3 and wheel respectively, make magneto-electric machine 4(4 ＇) hang on the wheel between, two magneto-electric machine 4(4 ＇) connect by longitudinal rod 6 between the shell, air bellow 9 tops across be provided with one and be used for the rebound 7 captive joint with car body, the middle position of rebound 7 lower surfaces is equipped with a drawing pull bar seat 18, drawing pull bar seat 18 is equipped with traction body 19, the two ends, the left and right sides of traction body 19 respectively are equipped with a drawing pull bar 5(5 ＇), wherein a drawing pull bar 5 is connected with magneto-electric machine 4 shells of front side, and another root drawing pull bar 5 ＇ are connected with the magneto-electric machine 4 ＇ shells of rear side.Elastic transmission device 3 comprises that two ends connect respectively magneto-electric machine 4(4 ＇) flange 14 of output shaft and wheel 2, the inner of flange 14 has the ＇ with magneto-electric machine 4(4) axle sleeve 17 that cooperates of output shaft, the inner end surface of wheel 2 is fixed in by attaching parts 16 in flange 14 outer ends, has the bolt of rubber arthrosis 15 to captive joint by cover between attaching parts 16 and the wheel 2.The first end of attaching parts 16 and wheel 2 offer circular hole, the circular hole of offering on the wheel 2 is around the peripheral distribution of axletree, cover has the double-screw bolt of rubber arthrosis 15 to pass the circular hole of the circular hole of wheel 2 and attaching parts 16 first ends and wheel 2 is fixing with attaching parts 16 by nut, the second end of attaching parts 16 arranges pin, pin passes the circular hole that flange 14 outer ends are offered, and flange is hung on the described pin.In this example, the middle part of left frame 1 middle part and left side frame 8 is connected to one by the flexible crossbeam 13 that is comprised of four steel plates, leaves the gap between four steel plates.
In the present embodiment, magneto-electric machine 4(4 ＇) is provided with on the shell for the first mount pad 24 that longitudinal rod 6 is installed, drawing pull bar 5(5 ＇ be used for to be installed) the second mount pad 25, longitudinal rod 6 two ends are respectively with front, rear side magneto-electric machine 4(4 ＇) the first mount pad 24 of shell is hinged, drawing pull bar 5(5 ＇) a end and magneto-electric machine 4(4 ＇) the second mount pad 25 of shell is hinged, the other end and traction body 19 are hinged, traction body 19 is hinged with drawing pull bar seat 18, two drawing pull bar 5(5 ＇) consist of Z-type drawing pull bar mechanism with traction body 19, Z-type drawing pull bar mechanism is positioned at the top of flexible crossbeam, and longitudinal tie is positioned at the below of flexible crossbeam.
Such as Fig. 3, Fig. 6, shown in Figure 7, direct-drive type bogie truck of the present invention also has the stop gear for restriction rebound 7 transverse shifting amplitudes, this stop gear comprises the symmetrical elastic buffer rubber backstop mount pad 29 that is fixed on rebound 7 lower surfaces, the symmetrical left frame 1 that is fixed on, the horizontal stop seat 22 at left side frame 8 middle parts, on the elastic buffer rubber backstop mount pad 29 elastic buffer rubber backstop 23 is installed, when rebound 7 moves laterally to end position, the elastic buffer rubber backstop 23 of rebound 7 offset directions one side is withstood the horizontal stop seat 22 of respective side, and it is spacing that rebound 7 is obtained.
Owing to adopt the flexibility framework, the single stage suspension of present embodiment is simplified, concrete structure is as follows: it is bumper block that left frame 1, left side frame 8 are separately installed with one, one is the rubber pad 10 that is provided with between bumper block and the axle box 11 as single stage suspension, this rubber pad 10 is the individual layer rubber pad, thickness is between 30～100mm, and the thickness of rubber pad 10 is 40mm in this example.
In addition, also to have the L-type anti-side rolling torsion rod 12, two that two ends connect respectively bogie side frame and rebound 7 be that vertical damper 21, two is lateral damper 20 to the direct-drive type bogie truck of present embodiment.
As shown in figure 11, from the end face of flexible crossbeam, four steel plates distribute radially, and its in a lateral direction, symmetrical on the vertical direction.
The anti-shearing rigidity of framework is relevant with the snakelike stability of vehicle, the left and right side frame torsional stiffness is relevant by the compliance track distortion of circuit with vehicle, different vehicle can be according to the needs to two kinds of performances during design, change quadrinomial parameter as shown in figure 11: the steel plate inner side edge to anyhow to the symmetric line intersection point apart from d, the thickness Z of steel plate, the width L of steel plate, the angle α between steel plate, and the length of steel plate.Adjust torsional stiffness and shear stiffness and satisfy the disparity items needs.Flexible crossbeam after the adjustment can carry out analogue simulation in computing machine, see whether meet designing requirement, does not adjust if meet then continue, and concrete method of adjustment the application is not described in detail.
In this example, d=30mm, L=135mm; Z=30mm, steel plate length is 1845mm, angle α between steel plate=40 degree, wheel-base bogie 1800mm, steel plate material P275 resolves and obtains framework torsional stiffness 0.226 MN.m/rad, shear rigidity 62.9 MN.m/rad, less torsional stiffness can adapt to worse circuit, and larger shear rigidity can guarantee the snakelike stability of vehicle.
Embodiment two
Present embodiment two structures are identical with embodiment one, and difference is that flexible crossbeam parameter is different, in this example, and d=38mm, L=120mm; Z=25mm, steel plate length is 1100mm, angle α between steel plate=66 degree, wheel-base bogie is 1800mm, steel plate material P275 resolves and obtains framework torsional stiffness 0.315 MN.m/rad, shear rigidity 102.98 MN.m/rad, less torsional stiffness can adapt to worse circuit, and larger shear rigidity can guarantee the snakelike stability that vehicle is higher.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (6)
1. direct-drive type bogie truck, composition comprises: truck frame, lay respectively at two magneto-electric machines of truck frame front side and rear side, be arranged at the air bellow of truck frame top, be arranged at the front and back wheel pair of truck frame below, described truck frame has left frame, left side frame, it is characterized in that: describedly take turns right axletree and pass the central through hole that magneto-electric machine is provided with, the output shaft at magneto-electric machine two ends is fixed by two right wheels of elastic transmission device and wheel respectively, make magneto-electric machine hang on the wheel between, connect by longitudinal rod between the shell of two magneto-electric machines, described air bellow top across be provided with one and be used for the rebound of captiveing joint with car body, the middle position of rebound lower surface is equipped with a drawing pull bar seat, the drawing pull bar seat is equipped with traction body, the two ends, the left and right sides of described traction body respectively are equipped with a drawing pull bar, wherein a drawing pull bar is connected with the magneto-electric machine shell of front side, and another root drawing pull bar is connected with the magneto-electric machine shell of rear side.
2. direct-drive type bogie truck according to claim 1, it is characterized in that: described elastic transmission device comprises that two ends connect respectively the flange of magneto-electric machine output shaft and wheel, the inner of described flange has the axle sleeve that cooperates with the magneto-electric machine output shaft, the inner end surface of wheel is fixed in by attaching parts in the flange outer end, has the bolt of rubber arthrosis to captive joint by cover between described attaching parts and the wheel.
3. direct-drive type bogie truck according to claim 2, it is characterized in that: first end and the wheel of described attaching parts offer circular hole, the circular hole of offering on the wheel is around the peripheral distribution of axletree, cover has the double-screw bolt of rubber arthrosis to pass the circular hole of the circular hole of wheel and attaching parts first end and by nut wheel and attaching parts is fixed, the second end of described attaching parts arranges pin, described pin passes the circular hole that the flange outer end is offered, and flange is hung on the described pin.
4. direct-drive type bogie truck according to claim 3, it is characterized in that: be provided with on the described magneto-electric machine shell for the first mount pad that longitudinal rod is installed, be used for installing the second mount pad of drawing pull bar, described longitudinal rod two ends are hinged with the first mount pad of front side and rear side magneto-electric machine shell respectively, one end of described drawing pull bar and the second mount pad of magneto-electric machine shell are hinged, the other end and traction body are hinged, described traction body and drawing pull bar seat are hinged, two drawing pull bar and traction body consist of Z-type drawing pull bar mechanism, described Z-type drawing pull bar mechanism is positioned at the top of flexible crossbeam, and longitudinal tie is positioned at the below of flexible crossbeam.
5. direct-drive type bogie truck according to claim 4, it is characterized in that: have the stop gear for restriction rebound transverse shifting amplitude, described stop gear comprises the symmetrical elastic buffer rubber backstop mount pad that is fixed on the rebound lower surface, the symmetrical left side that is fixed on, the horizontal stop seat at left side frame middle part, on the described elastic buffer rubber backstop mount pad elastic buffer rubber backstop is installed, when rebound moves laterally to end position, the elastic buffer rubber backstop of rebound offset direction one side is withstood the horizontal stop seat of respective side, and it is spacing that rebound is obtained.
6. direct-drive type bogie truck according to claim 4 is characterized in that: also having the L-type anti-side rolling torsion rod, two that two ends connect respectively bogie side frame and rebound is that vertical damper, two is lateral damper.
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| CN201210238323.5A CN102963387B (en) | 2012-07-10 | 2012-07-10 | Direct-driving type bogie structure |
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| CN201210238323.5A CN102963387B (en) | 2012-07-10 | 2012-07-10 | Direct-driving type bogie structure |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106364496A (en) * | 2016-09-30 | 2017-02-01 | 中车南京浦镇车辆有限公司 | Elastic hanging device for journal sticking installation motor |
| WO2017049995A1 (en) * | 2015-09-22 | 2017-03-30 | 中车南京浦镇车辆有限公司 | Direct-drive bogie having axle-mounted permanent magnet electric motor |
| CN106809229A (en) * | 2016-09-21 | 2017-06-09 | 比亚迪股份有限公司 | Suspension and bogie assembly and rail vehicle with it |
| CN108622110A (en) * | 2017-12-20 | 2018-10-09 | 北京中冶设备研究设计总院有限公司 | A kind of bogie drive system of sky rail suspension type tourist coach |
| CN109178017A (en) * | 2018-08-17 | 2019-01-11 | 中车南京浦镇车辆有限公司 | A kind of small wheelbase compact magneto seizes installing type and directly drives bogie |
| CN110775091A (en) * | 2019-10-31 | 2020-02-11 | 重庆交通职业学院 | High-speed rail motor car bogie |
| CN110789558A (en) * | 2019-11-13 | 2020-02-14 | 中车山东机车车辆有限公司 | Transition connecting device between vehicle body and bogie |
| WO2020062628A1 (en) * | 2018-09-25 | 2020-04-02 | 中车大同电力机车有限公司 | Direct-drive transmission mechanism |
| WO2020103016A1 (en) * | 2018-11-19 | 2020-05-28 | 中车唐山机车车辆有限公司 | Bogie and rail vehicle |
| CN111332322A (en) * | 2018-12-19 | 2020-06-26 | 南德盘形连轴器制造有限及两合公司 | Drive assembly for a rail vehicle |
| CN111348068A (en) * | 2018-12-20 | 2020-06-30 | 中车唐山机车车辆有限公司 | Wheel pair, bogie and rail vehicle |
| CN112406931A (en) * | 2020-11-27 | 2021-02-26 | 中车长江铜陵车辆有限公司 | High-performance railway wagon swing bolster structure and bogie |
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| WO2017049995A1 (en) * | 2015-09-22 | 2017-03-30 | 中车南京浦镇车辆有限公司 | Direct-drive bogie having axle-mounted permanent magnet electric motor |
| CN106809229A (en) * | 2016-09-21 | 2017-06-09 | 比亚迪股份有限公司 | Suspension and bogie assembly and rail vehicle with it |
| CN106809229B (en) * | 2016-09-21 | 2017-12-01 | 比亚迪股份有限公司 | Suspension and there is its bogie assembly and rail vehicle |
| US11414106B2 (en) | 2016-09-21 | 2022-08-16 | Byd Company Limited | Suspension system, bogie assembly with same, and rail vehicle |
| CN106364496B (en) * | 2016-09-30 | 2019-02-26 | 中车南京浦镇车辆有限公司 | One kind seizing installation motor spring suspension device |
| CN106364496A (en) * | 2016-09-30 | 2017-02-01 | 中车南京浦镇车辆有限公司 | Elastic hanging device for journal sticking installation motor |
| CN108622110A (en) * | 2017-12-20 | 2018-10-09 | 北京中冶设备研究设计总院有限公司 | A kind of bogie drive system of sky rail suspension type tourist coach |
| CN108622110B (en) * | 2017-12-20 | 2019-10-08 | 北京中冶设备研究设计总院有限公司 | A kind of bogie drive system of sky rail suspension type tourist coach |
| CN109178017A (en) * | 2018-08-17 | 2019-01-11 | 中车南京浦镇车辆有限公司 | A kind of small wheelbase compact magneto seizes installing type and directly drives bogie |
| WO2020062628A1 (en) * | 2018-09-25 | 2020-04-02 | 中车大同电力机车有限公司 | Direct-drive transmission mechanism |
| WO2020103016A1 (en) * | 2018-11-19 | 2020-05-28 | 中车唐山机车车辆有限公司 | Bogie and rail vehicle |
| CN111332322A (en) * | 2018-12-19 | 2020-06-26 | 南德盘形连轴器制造有限及两合公司 | Drive assembly for a rail vehicle |
| CN111348068A (en) * | 2018-12-20 | 2020-06-30 | 中车唐山机车车辆有限公司 | Wheel pair, bogie and rail vehicle |
| CN111348068B (en) * | 2018-12-20 | 2021-11-16 | 中车唐山机车车辆有限公司 | Wheel pair, bogie and rail vehicle |
| CN110775091A (en) * | 2019-10-31 | 2020-02-11 | 重庆交通职业学院 | High-speed rail motor car bogie |
| CN110789558A (en) * | 2019-11-13 | 2020-02-14 | 中车山东机车车辆有限公司 | Transition connecting device between vehicle body and bogie |
| CN112406931A (en) * | 2020-11-27 | 2021-02-26 | 中车长江铜陵车辆有限公司 | High-performance railway wagon swing bolster structure and bogie |
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