CN106740957B - Two axle truck with lock function - Google Patents
Two axle truck with lock function Download PDFInfo
- Publication number
- CN106740957B CN106740957B CN201710129117.3A CN201710129117A CN106740957B CN 106740957 B CN106740957 B CN 106740957B CN 201710129117 A CN201710129117 A CN 201710129117A CN 106740957 B CN106740957 B CN 106740957B
- Authority
- CN
- China
- Prior art keywords
- framework
- vehicle frame
- axle
- center
- ball pin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL 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
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/02—Arrangements permitting limited transverse relative movements between vehicle underframe or bolster and bogie; Connections between underframes and bogies
- B61F5/14—Side bearings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL 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
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/02—Arrangements permitting limited transverse relative movements between vehicle underframe or bolster and bogie; Connections between underframes and bogies
- B61F5/16—Centre bearings or other swivel connections between underframes and bolsters or bogies
- B61F5/18—King-bolts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL 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
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/02—Arrangements permitting limited transverse relative movements between vehicle underframe or bolster and bogie; Connections between underframes and bogies
- B61F5/22—Guiding of the vehicle underframes with respect to the bogies
- B61F5/24—Means for damping or minimising the canting, skewing, pitching, or plunging movements of the underframes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL 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
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/26—Mounting or securing axle-boxes in vehicle or bogie underframes
- B61F5/30—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes
- B61F5/308—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes incorporating damping devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL 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
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/26—Mounting or securing axle-boxes in vehicle or bogie underframes
- B61F5/30—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes
- B61F5/32—Guides, e.g. plates, for axle-boxes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL 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
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/50—Other details
- B61F5/52—Bogie frames
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
A kind of two axle truck with lock function is provided, with framework, it is equipped with center ball pin draft gear in the middle part of the crossbeam of the framework and center ball pin draft gear is fixedly connected with the vehicle frame above framework, constant contact resilient friction side bearing is supported on bottom of frame and vehicle frame is supported in the top of framework after coordinating with center ball pin draft gear, and the curb girder of the framework, which is equipped with, to be made between framework and vehicle frame, framework and wheel form the locking device of rigid support between axle box.The present invention makes framework and wheel between axle box, after forming rigid support between framework and vehicle frame, and vehicle frame swings when effectively preventing vehicle arrangement operation, prevents slide-out, is drawn centered on traction form, meets the walking of vehicle low speed and requires；When vehicle high-speed is run, center ball pin and constant contact resilient friction side bearing are drawn with the use of for ball center plate, are limited bogie and are shaken the head hunting, limit the rolling pendulum movement of car body, be conducive to the antidumping safety of vehicle.
Description
Technical field
The invention belongs to railway machinery design and manufacturing technology fields, and in particular to a kind of two shaft rotations with lock function
To frame.
Background technology
With the development of China's railway construction, various engineering trucks and railway breakdown vehicle, which become, must match equipment.In engineering
In vehicle or breakdown lorry operation, stability requirement when due to equipment operation on vehicle frame needs steering framing wheel pair and framework, structure
There is no relative motion between frame and vehicle frame, swing to prevent vehicle frame, prevent slide-out, and needs vehicle in low speed operation
It can keep stablizing.Rigid side bearing is usually used in existing technology, and cartridge carries traction entirely；In vehicle operation, due to longitudinal direction
The horizontal swing of tractive force and vehicle will produce rigid shock between upper center bearing；Again, due to manufacture and installation error,
So that discontinuity between upper center bearing, when especially car body sidewinders in operation, body center plate passes through edge transfer load, Yi Zao
At the fatigue damage of cartridge.Rigid side bearing can not generate stable revolution moment of friction, can not effectively inhibit vehicle transporting
Snake in row cannot meet the speed-raising requirement of railway equipment rescue aid.And on existing hot-short, using normal contact side bearing
The type of attachment for adding ball center plate installs locking cylinder additional between vehicle frame and bogie, and such structure can cause ball disk separation up and down,
Vehicle is unable to low speed traveling.In summary, it is necessary to be improved.
Invention content
Present invention solves the technical problem that：A kind of two axle truck with lock function is provided, by the side of framework
Setting makes framework and takes turns the system locking cylinder for forming rigid support between axle box, between framework and vehicle frame and the locking of two systems on beam
Cylinder, vehicle frame swings when effectively preventing work, prevents slide-out, is rubbed using center ball pin and constant contact resilient other
That holds is used cooperatively so that loading end is more uniform between vehicle frame and bogie, and stable flywheel moment limits bogie
It shakes the head hunting, improves the stability of vehicle, while limiting the rolling pendulum movement of car body, be conducive to the antidumping safety of vehicle
Property.
The technical solution adopted by the present invention：Two axle truck with lock function has framework, is installed on the framework
There are axle and axle both ends to be equipped with wheel to axle box, driving device, the cross of the framework are installed on the axle of described framework one end
It is equipped with center ball pin draft gear in the middle part of beam and center ball pin draft gear is fixedly connected with the vehicle frame above framework, it is described
Framework is equipped with constant contact resilient friction side bearing and constant contact resilient friction side bearing branch positioned at center ball pin draft gear both sides
The top that vehicle frame is supported in framework in bottom of frame and after coordinating with center ball pin draft gear is supportted, on the curb girder of the framework
Equipped with make between framework and vehicle frame, framework and wheel form the locking device of rigid support between axle box.
Wherein, the locking device includes system locking cylinder and two systems lock cylinder, and the wheel is to the axle box top in axle box
Cylinder is locked equipped with a system and system locking cylinder is fixed on curb girder end, and the piston of the system locking cylinder is supported on axle box downwards
The rigid support of framework and axle box is formed, the two systems locking cylinder is fixed in the middle part of curb girder and the piston of two systems locking cylinder props up upwards
Support the rigid support that framework and vehicle frame are formed on vehicle frame.
Further, the center ball pin draft gear include center ball pin, upper ball disk, lower ball disk, traction seat, baffle ring and
Guide, the traction seat is set in the middle part of crossbeam and lower ball disk and the baffle ring above lower ball disk are set to inside traction seat, institute
State lower ball disk be installed on traction seat inner bottom surface and baffle ring be fixed in the middle part of traction seat after form inner cavity between lower ball disk, it is described
It is equipped with guide in baffle ring and guide is interference fitted with baffle ring, center ball pin upper end is fixedly connected with vehicle frame and under the ball pin of center
It holds and is fixedly connected with the upper ball disk in inner cavity across guide, the center ball pin moves up after making ball disk and lower ball disk detachment
Centrepin traction is formed, the center ball pin moves down after so that ball disk is contacted with the friction pad on lower ball disk and forms the spherical surface heart
Disk is drawn.
Further, the wheel is to being equipped with self sealss taper roll bearing and self sealss taper roller axis in the axle box of axle box
Hold the end for being installed on axle.
The present invention compared with prior art the advantages of：
1, framework and wheel is made to form rigidity branch between axle box, between framework and vehicle frame by being arranged on the curb girder of framework
The system locking cylinder of support and two systems lock cylinder, and vehicle frame swings when effectively preventing equipment operation, prevents slide-out；
2, the center ball pin in the middle part of crossbeam makes to be intimate contact, vehicle frame and bogie between vehicle frame and bogie
Between loading end it is more uniform, when vehicle high-speed is run, the movement around limiting between bogie and vehicle frame, often
What contact resilient friction side bearing inhibited vehicle sidewinders movement, while generating stable flywheel moment effectively can inhibit vehicle to transport
Snake in row so that vehicle has the higher speed of service；
3, the guide in traction seat is intrados structure, is suitable for when vehicle high-speed is run between vehicle frame and framework
Relative swing；
4, when vehicle is run, vehicle frame is jacked up after two systems locking cylinder working, it is upper in the center ball pin on vehicle frame
Ball disk is detached with the lower ball disk in traction seat on truck transom, and pin is led centered on the connection type between vehicle frame and framework
Draw, meets the walking of vehicle low speed and require；
5, self sealss taper roll bearing can bear larger radial load and axial force so that wheel has the wheel in axle box
Larger bearing capacity meets the bearing requirements to wheel；
6, upper ball disk is set in the inner cavity that is formed between baffle ring and lower ball disk, and can be with center ball pin in the lumen to moving up
It is dynamic, it is multiple without having bundled between vehicle frame and framework to realize.
Description of the drawings
Fig. 1 is structure of the invention general assembly drawing schematic diagram；
Fig. 2 is that two systems of the invention lock cylinder, center ball pin and normal contact spring and rub the scheme of installation of side bearing；
Fig. 3 is the scheme of installation that a system of the invention locks cylinder；
When Fig. 4 is that two systems of the invention lock cylinder working, upper ball disk detaches Rear frame with lower ball disk and is supported with bogie, center
Sell hitch structure schematic diagram；
When Fig. 5 is that vehicle frame of the present invention plays multiple, structural schematic diagram when slinging framework after center ball pin and baffle ring cooperation.
Specific implementation mode
A kind of embodiment of the 1-5 descriptions present invention below in conjunction with the accompanying drawings.
Two axle truck with lock function has framework 1, axle 2 and 2 both ends of axle is equipped on the framework 1
Equipped with wheel to axle box 3, driving device 4 is installed on the axle 2 of 1 one end of the framework, 6 middle part of crossbeam of the framework 1 is equipped with
Center ball pin draft gear and center ball pin draft gear are fixedly connected with the vehicle frame 7 positioned at 1 top of framework, on the framework 1
Equipped with positioned at center ball pin draft gear both sides constant contact resilient rub side bearing 9 and constant contact resilient friction side bearing 9 be supported on
7 bottom of vehicle frame and the top that vehicle frame 7 is supported in after coordinating with center ball pin draft gear framework 1, the curb girder 8 of the framework 1
Being equipped with makes between framework 1 and vehicle frame 7, framework 1 and takes turns the locking device for forming rigid support between axle box 3；Specifically, institute
It includes system locking cylinder 10 and two systems locking cylinder 11 to state locking device, and the wheel is equipped with a system to 12 top of axle box in axle box 3
Locking cylinder 10 and system locking cylinder 10 are fixed on 8 end of curb girder, and the piston of the system locking cylinder 10 is supported on downwards axle box 12
The upper rigid support for forming framework 1 and axle box 12, the two systems locking cylinder 11 is fixed on 8 middle part of curb girder and two systems lock cylinder 11
Piston is supported on the rigid support that framework 1 and vehicle frame 7 are formed on vehicle frame 7 upwards；Specifically, the center ball pin draft gear packet
Center ball pin 5, upper ball disk 13, lower ball disk 14, traction seat 17, baffle ring 15 and guide 16 are included, the guide 16 is intrados structure,
The traction seat 17 is set to 6 middle part of crossbeam and lower ball disk 14 and the baffle ring 15 above lower ball disk 14 are set in traction seat 17
Portion, the lower ball disk 14 is installed on 17 inner bottom surface of traction seat and baffle ring 15 be fixed on behind the middle part of traction seat 17 with lower ball disk 14 it
Between form inner cavity 19, be equipped with guide 16 in the baffle ring 15 and guide 16 be interference fitted with baffle ring 15,5 upper end of center ball pin
It is fixedly connected with vehicle frame 7 and ball pin 5 lower end in center passes through guide 16 to be fixedly connected with the upper ball disk 13 in inner cavity 19, it is described
Center ball pin 5, which moves up, forms centrepin traction after so that ball disk 13 is detached from lower ball disk 14, the center ball pin 5, which moves down, makes ball
Disk 13 forms ball center plate traction after being contacted with the friction pad 18 on lower ball disk 14；Specifically, axis of the wheel to axle box 3
Self sealss taper roll bearing 20 is housed in case 12 and self sealss taper roll bearing 20 is installed on the end of axle 2.
In this structure when equipment on vehicle operation, cylinder 10 and two is locked by the hydraulic control system pair system on vehicle frame 7
System's locking cylinder 11 is controlled, and after so that system locking cylinder 10 and two systems locking cylinder 11 is worked, two systems lock the support vehicle upwards of cylinder 11
Frame 7, a system lock cylinder 10 and support on axle box 12 downwards so that form rigidity between vehicle frame 7 and framework 1, framework 1 and axle box 12 and holds
It carries, driving device 4 drives in bogie operational process, sells traction centered on low speed walking traction form；Vehicle is run in circuit
When, the upper ball disk 13 of 5 lower end of center ball pin forms ball center plate traction after being contacted by friction pad 18 with lower ball disk 14, and existing
The traction form of High-Speed Freight Vehicle is identical, and vertical force, cross force and longitudinal force have upper ball disk 13 and lower ball disk 14 to pass through friction pad
The ball center plate formed after 18 contacts transmits, and center ball pin 5 makes the intimate contact between vehicle frame 7 and bogie, limits
The guide 16 of moving around between bogie and vehicle frame 7, wherein intrados structure does not influence the opposite pendulum of center ball pin 5
Dynamic, constant contact resilient friction side bearing 9 inhibits the movement of sidewindering of vehicle, while constant contact resilient friction side bearing 9 provides stabilization
Revolution moment of friction, inhibit the snake of vehicle so that vehicle have the higher speed of service；Upper ball disk in inner cavity 19
There are up and down motion gaps between baffle ring 15 in 17 on 13 upper ends and traction seat, when two systems locking cylinder 11 works, upper ball disk
13 lift with vehicle frame 7, are detached with lower ball disk 14, sell traction centered on vehicle at this time, are used for vehicle low speed traveling；When upper ball disk 13
Continuation is lifted with vehicle frame 7 and is contacted with baffle ring 15, conducive to multiple from while framework 1 and vehicle frame 7；One system locking cylinder 10 is fixed on curb girder
On 8 lower cover, the hydraulic lock of system locking cylinder 10 is mountable on framework 1 or on the control panel of vehicle frame 7；The framework 1
21 both ends of end carriage are equipped with unit brake 22, and contact braked wheel of the unit brake 22 by brake shoe with tread is in axle box 3
Wheel, braking when for stopping or drive a vehicle, and with function is parked, can be used for parking when vehicle air system does not work
Braking；The curb girder 8 is vibration absorber 23 equipped with one and is vibration absorber 23 by curb girder 8 by one and takes turns in axle box 3
Axle box 12 is connected as one, and the level-one vibration absorber 23 uses duplex pull rod axle-box locating, pull rod to connect axle box 12 with curb girder 8
Together, one is that vibration absorber 23 provides bogie operation required lateral, vertical and longitudinal rigidity, and it is higher to ensure that vehicle has
The speed of service and good running stability.
Above-described embodiment, only presently preferred embodiments of the present invention, is not used for limiting the scope of the present invention, therefore all with this
The equivalence changes that content is done described in invention claim should all be included within scope of the invention as claimed.
Claims (3)
1. the two axle truck with lock function has framework (1), axle (2) and axle is equipped on the framework (1)
(2) both ends are equipped with wheel to axle box (3), are equipped with driving device (4) on the axle (2) of described framework (1) one end, feature exists
In：Equipped with center ball pin draft gear and center ball pin draft gear and positioned at framework in the middle part of the crossbeam (6) of the framework (1)
(1) vehicle frame (7) above is fixedly connected, and the framework (1) is equipped with the normal contact bullet positioned at center ball pin draft gear both sides
Frottage side bearing (9) and constant contact resilient friction side bearing (9) are supported on vehicle frame (7) bottom and coordinate with center ball pin draft gear
Vehicle frame (7) is supported in the top of framework (1) afterwards, the curb girder (8) of the framework (1) be equipped with make framework (1) and vehicle frame (7) it
Between, framework (1) and take turns between axle box (3) formed rigid support locking device；During the center ball pin draft gear includes
Bulbus cordis pin (5), upper ball disk (13), lower ball disk (14), traction seat (17), baffle ring (15) and guide (16), the traction seat (17)
In the middle part of crossbeam (6) and lower ball disk (14) and the baffle ring (15) above lower ball disk (14) are set in traction seat (17)
Portion, the lower ball disk (14) is installed on traction seat (17) inner bottom surface and baffle ring (15) is fixed on behind traction seat (17) middle part under
Inner cavity (19) are formed between ball disk (14), guide (16) is equipped in the baffle ring (15) and guide (16) is matched with baffle ring (15) interference
It closes, center ball pin (5) upper end is fixedly connected with vehicle frame (7) and center ball pin (5) lower end passes through guide (16) and positioned at interior
Upper ball disk (13) in chamber (19) is fixedly connected, and the center ball pin (5), which moves up, makes ball disk (13) be detached from lower ball disk (14)
Centrepin traction is formed afterwards, and the center ball pin (5), which moves down, makes ball disk (13) and the friction pad on lower ball disk (14)
(18) ball center plate traction is formed after contacting.
2. the two axle truck according to claim 1 with lock function, it is characterised in that：The locking device includes
One system locks cylinder (10) and two systems locking cylinder (11), and the wheel locks cylinder to being equipped with a system above the axle box (12) in axle box (3)
(10) and system locking cylinder (10) is fixed on curb girder (8) end, and the piston of the system locking cylinder (10) is supported on downwards axle box
(12) rigid support of framework (1) and axle box (12) is formed on, the two systems locking cylinder (11) is fixed on curb girder (8) middle part and two
The piston of system's locking cylinder (11) is supported on the rigid support that framework (1) and vehicle frame (7) are formed on vehicle frame (7) upwards.
3. the two axle truck according to claim 1 or 2 with lock function, it is characterised in that：The wheel is to axle box
(3) self sealss taper roll bearing (20) is housed in axle box (12) and self sealss taper roll bearing (20) is installed on axle
(2) end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710129117.3A CN106740957B (en) | 2017-03-06 | 2017-03-06 | Two axle truck with lock function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710129117.3A CN106740957B (en) | 2017-03-06 | 2017-03-06 | Two axle truck with lock function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106740957A CN106740957A (en) | 2017-05-31 |
| CN106740957B true CN106740957B (en) | 2018-08-31 |
Family
ID=58961432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710129117.3A Active CN106740957B (en) | 2017-03-06 | 2017-03-06 | Two axle truck with lock function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106740957B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107130480B (en) * | 2017-06-26 | 2020-04-21 | 株洲时代电子技术有限公司 | Railway switch transport vehicle |
| CN107142798B (en) * | 2017-06-26 | 2020-04-17 | 株洲时代电子技术有限公司 | Operation method of railway turnout transport vehicle |
| CN110861672B (en) * | 2019-12-05 | 2022-03-15 | 中车长春轨道客车股份有限公司 | Aluminum alloy end chassis structure and have subway vehicle of this end chassis structure |
| CN112519826B (en) * | 2020-12-09 | 2022-05-17 | 中车唐山机车车辆有限公司 | Bogie and rail vehicle |
| CN114475684A (en) * | 2021-12-31 | 2022-05-13 | 中铁工程装备集团隧道设备制造有限公司 | Core disc connecting structure and bogie using same |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB832846A (en) * | 1957-09-20 | 1960-04-13 | Metalastik Ltd | Improvements in or relating to railway vehicles |
| CN201143948Y (en) * | 2008-01-12 | 2008-11-05 | 襄樊金鹰轨道车辆有限责任公司 | Railway electrification operation vehicle |
| CN201512369U (en) * | 2009-09-18 | 2010-06-23 | 武桥重工集团股份有限公司 | Bearing traction pin mechanism capable of carrying out rotation with multiple freedom degree |
| CN102069815B (en) * | 2010-12-28 | 2012-07-25 | 南车四方车辆有限公司 | Rolling stock and locking device used for same |
| CN203902567U (en) * | 2014-06-26 | 2014-10-29 | 南车长江车辆有限公司 | High-speed railway freight car bogie |
| CN204845945U (en) * | 2015-08-27 | 2015-12-09 | 宝鸡南车时代工程机械有限公司 | A bogie locking system for railway construction machinery |
| CN105460039A (en) * | 2015-12-28 | 2016-04-06 | 北京二七轨道交通装备有限责任公司 | Rail engineering vehicle bogie and rail engineering vehicle |
| CN206691121U (en) * | 2017-03-06 | 2017-12-01 | 宝鸡中车时代工程机械有限公司 | Two axle truck with lock function |
-
2017
- 2017-03-06 CN CN201710129117.3A patent/CN106740957B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106740957A (en) | 2017-05-31 |
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| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Ruixia Inventor after: Wang Xiubo Inventor after: Zhao Li Inventor after: Wang Xinhu Inventor after: Miao Wu Inventor before: Li Ruixia Inventor before: Zhang Xiangyang Inventor before: Zhao Li Inventor before: Wang Xinhu Inventor before: Miao Wu |
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