CN106494166B - A kind of road rail vehicle - Google Patents

A kind of road rail vehicle Download PDF

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Publication number
CN106494166B
CN106494166B CN201610937758.7A CN201610937758A CN106494166B CN 106494166 B CN106494166 B CN 106494166B CN 201610937758 A CN201610937758 A CN 201610937758A CN 106494166 B CN106494166 B CN 106494166B
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China
Prior art keywords
running
component
chain
frame
rail vehicle
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Active
Application number
CN201610937758.7A
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Chinese (zh)
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CN106494166A (en
Inventor
侯新英
李海涛
周家林
孙滕
盖晓东
董雯霞
陈常江
魏德勇
李越年
李松林
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Crrc Sifang Co Ltd
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Crrc Sifang Co Ltd
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Priority to CN201610937758.7A priority Critical patent/CN106494166B/en
Publication of CN106494166A publication Critical patent/CN106494166A/en
Application granted granted Critical
Publication of CN106494166B publication Critical patent/CN106494166B/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60FVEHICLES FOR USE BOTH ON RAIL AND ON ROAD; AMPHIBIOUS OR LIKE VEHICLES; CONVERTIBLE VEHICLES
    • B60F1/00Vehicles for use both on rail and on road; Conversions therefor
    • B60F1/04Vehicles for use both on rail and on road; Conversions therefor with rail and road wheels on different axles
    • B60F1/043Vehicles comprising own propelling units
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60FVEHICLES FOR USE BOTH ON RAIL AND ON ROAD; AMPHIBIOUS OR LIKE VEHICLES; CONVERTIBLE VEHICLES
    • B60F2301/00Retractable wheels
    • B60F2301/04Retractable wheels pivotally

Abstract

The present invention proposes a kind of road rail vehicle, including chassis, electric control system, the first walking system being arranged on the chassis and the second running gear, second running gear includes preceding running part, rear running part, driven at low speed motor and high-speed drive motor, driven at low speed motor is arranged on preceding running part, height drive motor is arranged on rear running part, the alternating movement under the control of electric control system of driven at low speed motor and height drive motor;Preceding running part includes the first frame, preceding twin shaft walking component and the front stretching component flexible for running part before controlling, and rear running part includes the second frame, the rear twin shaft being arranged under the second frame walking component and the rear telescopic component flexible for running part after controlling.It solves the problems, such as that bearing capacity existing for road rail vehicle in the prior art is small through the invention, cannot achieve high low speed switching, meet the demand of the carrying of big bearing capacity, it can be achieved that the high low speed in different occasions switches.

Description

A kind of road rail vehicle
Technical field
The present invention relates to a kind of autorail more particularly to a kind of rail-road cars.
Background technique
Currently, autorail be because it can not only have been travelled on highway, but also can run on railway, it is extensive Applied to rail transport industry, the operations such as autorail is commonly used in rail traction, repairing, constructs and speedily carry out rescue work, but it is existing Rail-road car often railway EEF bogie be by chassis front end be oriented to running part, mainly play the guiding role, rear end is Power running part, bearing capacity is also limited, cannot bear heavy weight bearing capacity;Driving force is insufficient, when walking maximum speed It can only achieve 30/h, be unable to satisfy when special occasions is such as needed to repair, be speedily carried out rescue work and need Fast marching or moment that speed change is needed to carry out The demand to proceed slowly can not achieve and carry out accurate quickly switching between high low speed;In addition, when carrying out latch bridge, it is existing The rear axle of road rail vehicle is Dan Qiao in technology, using the latch bridge device of oil cylinder form.
Summary of the invention
The technical problems to be solved by the present invention are: the present invention proposes a kind of road rail vehicle, solve in the prior art Bearing capacity existing for road rail vehicle is small, cannot achieve the problem of high low speed is switched fast, and meets the carrying of big bearing capacity Demand is, it can be achieved that the high low speed in different occasions switches.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of road rail vehicle, including chassis, electric control system, the first Running System being arranged on the chassis System and the second running gear, second running gear includes preceding running part, rear running part, driven at low speed motor and high-speed driving Motor, the driven at low speed motor are arranged on the preceding running part, height drive motor setting running part after described On, the alternating movement under the control of the electric control system of the driven at low speed motor and height drive motor;It is described to move ahead Walk the extension that portion includes the first frame, the preceding twin shaft being arranged under the first frame walking component and stretch for running part before controlling Contracting component, after the rear running part includes the second frame, the rear twin shaft being arranged under the second frame walking component and is used to control The flexible rear telescopic component of running part.
The present invention has many advantages compared with prior art and good effect:
The present invention proposes a kind of road rail vehicle, and can walk in highway and the enterprising every trade of railway is provided on chassis One running gear and the second running gear, the second running gear walk component using twin shaft to drive, increase the carrying of vehicle Ability;Setting driven at low speed motor and high-speed driving horse are respectively corresponded on the preceding running part and rear running part of second running gear It reaches, the two realizes the driving to running part by alternating movement, and rail-road car can do low speed fortune under the effect of driven at low speed motor Row, rail-road car can do high-speed cruising under the effect of height drive motor, realize the simple and quick switching between high low speed, and It is controlled by electric control system and is driven between high-speed motor and zero motor, pass through electric control system and hydraulic system Cooperation realizes that control is more accurate, and it is more quick that speed adjusts variation.
Detailed description of the invention
Fig. 1 is road rail vehicle main view of the present invention;
Fig. 2 is the top view of road rail vehicle of the present invention;
Fig. 3 is the three-dimensional structure diagram of the preceding running part of road rail vehicle of the present invention;
Fig. 4 is the three-dimensional structure diagram of the rear running part of road rail vehicle of the present invention;
Fig. 5 is the structural schematic diagram of the latch bridge device of road rail vehicle of the present invention.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.
Referring to shown in Fig. 1-Fig. 5, the present invention proposes a kind of embodiment of road rail vehicle, including chassis 1, electrical control System, the first walking system being arranged on the chassis 1 and the second running gear 2, the second running gear 2 include preceding walking Portion 21, rear running part 22, driven at low speed motor 23 and high-speed drive motor 24, driven at low speed motor 23 are arranged in preceding running part 2 On, height drive motor 24 is arranged on rear running part 22, and driven at low speed motor 23 and height drive motor 24 are described electrical Alternating movement under the control of control system;The preceding running part 21 includes the first frame 211, is arranged under the first frame 211 Preceding twin shaft walking component 212 and the front stretching component 213 flexible for running part 21 before controlling, it is described after running part 22 include the Two frames 221, the rear twin shaft being arranged under the second frame 221 walking component 222 and for running part 22 after controlling it is flexible after Telescopic component 223.
A kind of road rail vehicle is proposed in the present embodiment, overall structure includes chassis 1, is set in the lower section of chassis 1 First walking system, the second running gear 2 are set, first walking system is mainly used for realizing walks on highway, and main body is glue Wheel is arranged 6, is mainly walked when driving by the rubber tire of lower section on highway.Second running gear 2 is mainly used in railway Upper operation, and the second running gear 2 can realize the switching of height and two kinds of driving modes of low speed on railway.Specifically, the Two running gears 2 lean on the preceding running part 21 and be arranged in chassis tail 1 that nearby bridge location is set by being arranged between preceding bridge and rear axle The rear running part 2 at portion rear axle end, the driven at low speed motor for driving preceding running part 21 and rear running part 22 to be run at a low speed 23 and high-speed drive motor 24 for driving preceding running part 21 and rear running part 22 to run at high speed constitute.High-speed driving horse Up to 24 and 23 alternating action of driven at low speed motor, i.e., when high-speed drive motor 24 acts on, driven at low speed motor 23 is failure to actuate, instead ?;Since the space of preceding running part 21 limits, driven at low speed motor 23 is arranged in preceding running part in the present embodiment On 21, and high-speed drive motor 24 is correspondingly arranged on rear running part 22.It is corresponding by electric control system in the present embodiment Control high-speed drive motor 24 and driven at low speed motor 23, it is ensured that the accuracy of control;And it may be implemented between high low speed It is switched fast, can switch to high-speed cruising state when being repaired and speedily carrying out rescue work operation, can meet and be rapidly achieved work on the spot Demand can then be switched to rapidly low speed when needing low speed to run, that is, save the work need that the energy meets different occasions again It asks.
Specifically, the preceding running part 21 in the present embodiment includes the first frame 211, set in the lower section of the first frame 211 Preceding twin shaft walking component 212 is set, uses twin shaft as powerdriven middleware in preceding twin shaft walking component 212, it can be effective Increasing vehicle bearing capacity, it is preferred that preceding twin shaft walking component 212 includes that 2 groups of intersections are oppositely arranged on the first frame 211 The preceding walking component of two sides, walking component includes front axle 212-1, along the front vehicle wheel of front axle 212-1 setting before every group 212-2 and front gear transmission case 212-3;It is correspondingly arranged on driven at low speed motor 23 on every front axle 212-1, it is low in progress Speed is run at a low speed by the synchronous driving vehicle of 2 driven at low speed motors 23 on two front axle 212-1 when driving;Low When speed operation, 2 driven at low speed motors 23 are worked at the same time, and can be used for meeting the speed of 0.5km/h to 5km/h.Specifically, electrical Control system include the first electromagnetic clutch, be arranged between driven at low speed motor 23 and front gear transmission case 212-3 the first electromagnetism from Clutch.Preferably, front gear transmission case 212-3 includes front gear box and the front gear being arranged in front gear box transmission Group.First electromagnetic clutch by be powered or powered off by control come and then realize control to driven at low speed motor 23, specifically, First electromagnetic clutch is mainly disposed between the gear in front gear transmission group and driven at low speed motor 23, by the first electromagnetism from The energization of clutch is bonded with driven at low speed motor 23 makes its movement, and the rotation of driven at low speed motor 23 drives in front gear transmission group Gear rotates, and then drives and rotate with the front axle 212-1 of gear cooperation, and front axle 212-1 drives front vehicle wheel 212-2 to turn in turn It is dynamic.
Corresponding, rear running part 22 equally includes the second frame 221 to the effect of its main support, in the second frame 221 Bottom end setting after twin shaft walk component 222, rear twin shaft walking component 222 is equally used for the traveling of rear running part 22, it is preferred that Twin shaft walking component 222 includes that 2 groups of intersections are oppositely arranged on the rear walking component of 221 two sides of the second frame, walk after every group afterwards Component includes back axle 222-1 and rear wheel 222-2, final drive gear case 222-3 along back axle 222-1 setting;Institute The backgear transmission group that final drive gear case 222-3 includes rear gear box He is arranged in the rear gear box is stated, after each 24,2 high-speed driving horses 24 of high-speed drive motor are provided on axle 222-1 up to that vehicle can be driven to run at high speed, most At high speed up to 80km/h, can meet the needs of high-speed cruising on railway is speedily carried out rescue work;Preferably, in backgear transmission group and 24 are provided with the second electromagnetic clutch between high-speed drive motor, the second electromagnetic clutch by it is electric after can be with high-speed motor 24 Fitting disconnects after losing electricity with high-speed drive motor 24, electric must be bonded with high-speed drive motor 24, corresponding, driven at low speed Motor 23 is then automatically powered off with the first electromagnetic clutch, and vice versa, and the second electromagnetic clutch obtains electric and high-speed drive motor 24 The movement of high-speed drive motor 24,21 He of running part before the then driving that high-speed drive motor 24 acts then are acted on after fitting accordingly Running part 22 is run at high speed afterwards.
Front stretching component 213 is mainly used for the lifting of running part 21 before realizing, front stretching component 213 is in electric control system Control action under accordingly can be stretched out or be retracted, and then drive the entire preceding running part 21 that connect with front stretching component 213 Rise or fall;Likewise, rear telescopic component 223 then stretches out or retracts running part 22 after realization drives by it accordingly It rises or falls, and then realizes the conversion of highway and railway both of which on the whole.
Preferably, front stretching component 213 includes first hydraulic cylinder 213-1, first connecting rod component 213-2 and bolster 213-3; First frame 211 is rotatablely connected by floating bearing and bolster 213-3, and bolster 213-3 is connect with first connecting rod component 231-2, First connecting rod component 213-2 is connect with first hydraulic cylinder 213-1, and first hydraulic cylinder 213-1 is fixedly connected with chassis 1.First Piston rod can be stretched out or be retracted accordingly after the signal of electronically controlled system by hydraulic cylinder 213-1, drive and piston rod The first connecting rod component 213-2 of connection is synchronous to be stretched out or retracts, and is driven the stretching of bolster 213-3 or is retracted and then drive the first frame Frame 211 and the preceding twin shaft being arranged on the first frame 211 walking component 212 rise or fall.
Preferably, rear telescopic component 223 includes second hydraulic cylinder 223-1 and second connecting rod component 223-2;Second frame Frame 221 is connect by floating bearing with the second connecting rod component 223-2, and second connecting rod component 223-2 and described second is hydraulic Cylinder 223-1 connection, the second hydraulic cylinder 223-1 are fixedly connected with the chassis 1.EEF bogie 22 and the second frame 221 afterwards Between be mounted with floating bearing, may be implemented 90 ° of left rotation and right rotation of rear running part 22 and the second frame 221, the rotation of the second frame 221 It is fallen after turning 90 ° in orbit, provides power by high-speed drive motor 24, driven vehicle mobile, fallen after being moved to suitable position Running part 21 before lower realizes the vertical upper track of vehicle.
Specific conversion process are as follows: when requiring transformation into highway mode, then walking before being controlled by electric control system Portion 21 and rear running part 22 are shunk, then preceding running part 21 and rear EEF bogie 22 rise, and leave rail level, vehicle passes through chassis The rubber tire that first walking system operation on 1 is arranged on chassis 1;When requiring transformation into railroad mode, by electrical Control system controls preceding running part 21 and rear running part 22 stretches out, and preceding running part 21 and 22 steel wheel of rear running part fall to track On, vehicle is lifted, rubber tire is lifted away from rail level certain altitude, and vehicle passes through the low speed being arranged on preceding running part 21 and rear running part 22 Drive motor 23 or high-speed drive motor 24 drive vehicle to orbit.
Further, the road rail vehicle in the present embodiment can also be real accordingly while carrying out railroad mode conversion Existing latch bridge movement, is mainly realized by the way that latch bridge device 3 to be arranged in conjunction with the specific structure of rear running part 22, specifically, this Latch bridge device 3 in embodiment includes 32,2 the first chain 31, pulley sprocket wheels 33 and 2 be located on 2 sprocket wheels 33 of successively having mercy on The second chain 34 of group, first chain 31 is wound around on pulley 32 and one end is connect with rear telescopic component 223, and the other end is corresponding It is connected with 2 group of second chain 34,2 group of second chain 34 and 2 rear axle 5 connects.
Preferably, the first chain 31 is leaf chain, and one end is connected by the plate itself being arranged and rear telescopic component 223 Connect, the other end is rich be located on pulley 32 after by the way that a connecting plate 6 is corresponding and 2 group of second chain 34 connection, i.e. connecting plate 6 Top and bottom are corresponding and 2 group of second chain 34 is attached, and 2 group of second chain 34 is respectively along the front axle and rear axle with rear axle 6 Position be correspondingly arranged 2 sprocket wheels 33 winding after naturally droop, low end with one lift the front-end and back-end of cage 7 it is corresponding It is connected and fixed, lifts cage 7 and rear axle 5 is connected and fixed, it is preferred that the second chain 34 selects bushroller chain, and 2 groups of setting can be true Guarantor's uniform force when lifting to rear axle 5 is steady, improves the stability and reliability of latch bridge.
Pulley 32 is fixed in one pulley mounting base of setting by self-control bolt or pin shaft, and pulley mounting base is fixed on pair On vehicle frame 8.Sprocket wheel 33 is fixed in a sprocket wheel mounting base by self-control bolt or pin shaft.
To ensure that rich the second chain 34 being located on sprocket wheel 33 can produce work after the traction action by the first chain 31 It firmly acts on lifting cage 7 and carries out latch bridge, the top of rear axle 5 is arranged in 2 sprocket wheels 33, and the axis of pulley 32 is lower than sprocket wheel 33 axis are concordant with 33 axis of sprocket wheel.
When carrying out railroad mode switching, rear shape walks the stretching of the second hydraulic cylinder 223-1 piston rod in portion 22, rear running part 22 fall, and the rubber tyre on chassis 1 leaves ground, rotate after leaf chain tension around pulley 32, are drawn respectively by connecting plate 6 Two groups of bushroller chains are moved, two groups of bushroller chains are rotated rotating around two sprocket wheels 33, and bushroller chain is connected by lifting cage 7 The effect of connecing respectively lifts two rear axles 5 of chassis 1, i.e., leaf spring is fixed on a certain position and no longer deforms, to reach Latch bridge state.When second hydraulic cylinder 223-1 piston rod retracts, when rear running part 22 is packed up, 1 rubber tyre of chassis is fallen to the ground On, leaf chain and bushroller chain are not subjected to pulling force in relaxation state, and chain no longer plays limitation leaf spring and vehicle bridge position The effect set, so that vehicle bridge be unlocked.
Further, the adjusting screw rod for adjusting bushroller chain length is provided on 2 groups of bushroller chains 9.Adjusting screw rod 9 is including 2 screw bodies and is set in the thread bush being threadedly engaged between 2 screw bodies between 2 screw bodies, and 2 It is equipped with gap between a screw body, the variation of distance between 2 screw bodies, 2 screw bodies pair can be realized by adjusting thread bush It should connect with the both ends of bushroller chain, mainly be changed between 2 screw bodies by rotation thread bush in adjusting screw rod Distance and then the length for changing two groups of bushroller chains, bushroller chain is shorter, and when rear running part 22 is put down, vehicle bridge 5 is opposite Higher in the height that ground is promoted, certainly, the pulling force that bushroller chain and leaf chain are born is also bigger, but should be noted that and not surpass The rated load that chain can bear out.
Further, it is provided on subframe 8 in the present embodiment for being connect with the standby upper installing docked of upper installing Mouthful.The quick upper assembly and disassembly standby with upper installing can be realized by upper dress equipment interface.
Further, the road rail vehicle in the present embodiment further includes generator and plunger type variable capacity pump, the generator It is connected with plunger type variable capacity pump, the plunger type variable capacity pump and driven at low speed motor 23 or high-speed drive motor 24.Pass through power generation Machine drives plunger variable pump operation, and plunger type variable capacity pump drives driven at low speed motor 23 or height drive motor 24 to act, shape At 2 sets of Closed Hydraulic control systems;To vehicle speed adjustment control by two sets of hydraulic systems be combined control, it can be achieved that To the negative-feedback regu- lation in driving process, the accuracy of control is improved.
The above described is only a preferred embodiment of the present invention, being not that the invention has other forms of limitations, appoint What those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc. Imitate embodiment.But without departing from the technical solutions of the present invention, according to the technical essence of the invention to above embodiments institute Any simple modification, equivalent variations and the remodeling made, still fall within the protection scope of technical solution of the present invention.

Claims (8)

1. a kind of road rail vehicle, including chassis, electric control system, the first Running System being arranged on the chassis System, the second running gear and latch bridge device, which is characterized in that second running gear includes preceding running part, rear running part, low Fast drive motor and high-speed drive motor, the driven at low speed motor are arranged on the preceding running part, the high-speed driving horse Up to setting after described on running part, the control of the driven at low speed motor and high-speed drive motor in the electric control system Lower alternating movement;The preceding running part includes the first frame, the preceding twin shaft being arranged under the first frame walking component and for controlling The flexible front stretching component of running part before making, the rear twin shaft that the rear running part includes the second frame, is arranged under the second frame Walking component and the rear telescopic component to stretch for running part after controlling;The latch bridge device includes the first chain, pulley, 2 Sprocket wheel and 2 group of second chain being successively wound around on 2 sprocket wheels, first chain is wound around on pulley and one end is stretched with rear Component connection, the other end are connected with corresponding 2 group of second chain, 2 group of second chain and 2 rear axle connections;Before described Telescopic component includes first hydraulic cylinder, first connecting rod component and bolster;First frame passes through floating bearing and the bolster Rotation connection, the bolster are connect with the first connecting rod component, and the first connecting rod component is connect with the first hydraulic cylinder, The first hydraulic cylinder is fixedly connected with chassis.
2. a kind of road rail vehicle according to claim 1, which is characterized in that the preceding twin shaft walking component includes 2 groups Intersect be oppositely arranged on the preceding walking component of the first frame two sides, walking component includes front axle, along the front axle before every group The front vehicle wheel and front gear transmission case of setting;The electric control system includes the first electromagnetic clutch, the driven at low speed horse Up to being provided with first electromagnetic clutch between the front gear transmission case.
3. road rail vehicle according to claim 2, which is characterized in that it is described after telescopic component include second hydraulic cylinder and Second connecting rod component;Second frame is connect by floating bearing with the second connecting rod component, the second connecting rod component It is connect with the second hydraulic cylinder, the second hydraulic cylinder is fixedly connected with the chassis.
4. road rail vehicle according to claim 3, which is characterized in that twin shaft walking component includes 2 groups of intersections after described It is oppositely arranged on the rear walking component of the second frame two sides, walking component includes back axle, is arranged along the back axle after every group Rear wheel and backgear transmission case, the electric control system include the second electromagnetic clutch, the high-speed drive motor with Second electromagnetic clutch is provided between the backgear transmission case.
5. road rail vehicle according to claim 1-4, which is characterized in that it further include subframe, the pair vehicle It is provided on frame for installing the standby upper dress equipment interface docked with upper.
6. road rail vehicle according to claim 1, which is characterized in that first chain by a connecting plate it is corresponding and 2 group of second chain connection, 2 group of second chain are connected by a lifting lid with the rear axle.
7. road rail vehicle according to claim 6, which is characterized in that the upper of the rear axle is arranged in 2 sprocket wheels The axis of side, the pulley is lower than sprocket wheel axis or concordant with sprocket wheel axis.
8. road rail vehicle according to claim 6, which is characterized in that the second chain is bushroller chain, in 2 groups of sleeves The adjusting screw rod for adjusting bushroller chain length is provided on roller chain.
CN201610937758.7A 2016-10-25 2016-10-25 A kind of road rail vehicle Active CN106494166B (en)

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CN106494166B true CN106494166B (en) 2019-08-02

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107867135A (en) * 2017-11-08 2018-04-03 中车四方车辆有限公司 Autorail guidance set and autorail
CN108001147A (en) * 2017-11-27 2018-05-08 马鞍山市海华金属制品有限公司 A kind of novel air draft hitch
CN108790641A (en) * 2018-02-24 2018-11-13 中车四方车辆有限公司 The dual-purpose transport vehicle of road and rail
CN108790640A (en) * 2018-02-24 2018-11-13 中车四方车辆有限公司 Road rail vehicle

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2241457A1 (en) * 2009-04-17 2010-10-20 Otto Schmidt Device for running on rails and corresponding vehicle
DE102010052943A1 (en) * 2010-11-22 2012-05-24 Jürgen Burg Vehicle e.g. truck has base support unit that is arranged on driving unit and hydraulic rail drive unit at preset latching distance with locking elements for attaching interchangeable elements in different insertion positions
CN103481766A (en) * 2013-10-12 2014-01-01 三门峡速达交通节能科技股份有限公司 Driving system and method of electric vehicle
CN204982773U (en) * 2015-07-27 2016-01-20 南车四方车辆有限公司 Public rail way pulls motor sweeper
CN205365626U (en) * 2016-01-05 2016-07-06 中车青岛四方机车车辆股份有限公司 Bogie and install low -floor rail vehicle of this bogie
CN105774443A (en) * 2016-03-30 2016-07-20 中车四方车辆有限公司 Chain type vehicle frame device and road and railway dual-purpose vehicle

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2241457A1 (en) * 2009-04-17 2010-10-20 Otto Schmidt Device for running on rails and corresponding vehicle
DE102010052943A1 (en) * 2010-11-22 2012-05-24 Jürgen Burg Vehicle e.g. truck has base support unit that is arranged on driving unit and hydraulic rail drive unit at preset latching distance with locking elements for attaching interchangeable elements in different insertion positions
CN103481766A (en) * 2013-10-12 2014-01-01 三门峡速达交通节能科技股份有限公司 Driving system and method of electric vehicle
CN204982773U (en) * 2015-07-27 2016-01-20 南车四方车辆有限公司 Public rail way pulls motor sweeper
CN205365626U (en) * 2016-01-05 2016-07-06 中车青岛四方机车车辆股份有限公司 Bogie and install low -floor rail vehicle of this bogie
CN105774443A (en) * 2016-03-30 2016-07-20 中车四方车辆有限公司 Chain type vehicle frame device and road and railway dual-purpose vehicle

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