CN206049695U - A kind of low-floor bogie and 100% low-floor tramcar - Google Patents

A kind of low-floor bogie and 100% low-floor tramcar Download PDF

Info

Publication number
CN206049695U
CN206049695U CN201620850067.9U CN201620850067U CN206049695U CN 206049695 U CN206049695 U CN 206049695U CN 201620850067 U CN201620850067 U CN 201620850067U CN 206049695 U CN206049695 U CN 206049695U
Authority
CN
China
Prior art keywords
bolster
framework
low
floor
bogie
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.)
Expired - Fee Related
Application number
CN201620850067.9U
Other languages
Chinese (zh)
Inventor
蔡征征
王湘涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CRSC Railway Vehicle Co Ltd
Original Assignee
CRSC Railway Vehicle Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by CRSC Railway Vehicle Co Ltd filed Critical CRSC Railway Vehicle Co Ltd
Priority to CN201620850067.9U priority Critical patent/CN206049695U/en
Application granted granted Critical
Publication of CN206049695U publication Critical patent/CN206049695U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model discloses a kind of low-floor bogie and 100% low-floor tramcar.The low-floor bogie includes framework and setting bolster architecturally for coupling with car body;Sink to forming U-shape structure in the middle part of the framework, the middle part of the bolster sinks the U-shape structure to be formed and be coordinated in the middle part of the framework;Secondary spring is provided between the framework and bolster.Thus, this utility model solves the problems, such as above existing low-floor bogie that arrangement space is not enough, is respectively arranged multiple seats such that it is able to the both sides above the bogie.

Description

A kind of low-floor bogie and 100% low-floor tramcar
Technical field
This utility model is related to a kind of low-floor bogie and 100% low-floor tramcar, belongs to rail vehicle field.
Background technology
There is certain drop between the car door of the on-board and off-board of vehicle body and ground.Therefore, in recent years streetcar from accessible Consideration set out, occur in that and the car door of on-board and off-board arranged and must easily be taken in order to man at an advanced age and people with disability etc. than relatively low Low-floor type rail truck.The floor level of 100% low-floor tramcar is usually 350mm or so, facilitates passenger, especially It is getting on or off the bus for child, wheelchair-bound people with disability etc..Meanwhile, facilitate passenger to move in the car, reduce the time got on or off the bus.
The utility model patent of Patent No. CZ301278B6 provides light rail car power truck, including framework, bolster, wheel To, primary spring, secondary spring, two be vertical, lateral damper, duplex pull rod haulage gear, elastic suspension motor zigzag tread patterns Mechanism, hydraulic brake unit, framework supporting leg are outwardly cantilevered, by bearing unit support fifth wheel pair, motor with Gear-box couples;Two two is two ends that vertical damper is located at bolster;Two is the both sides position that lateral vibration absorbing device is located at bolster Put;Parallel double-draw rod trailer system is located at the bottom of bolster.
To ensure the high riding quality of modern tram, the helical steel springs that amount of deflection need to be selected larger support car body, increase Plus the working depth of spring, and motor mounting space restriction is towed, secondary spring can only be arranged in of a relatively high position, lead Cause in-car seat arrangement space above the bogie with bolster relatively reduced, such as US9096240B2 and EP2676859A1.
Utility model content
This utility model aims to provide a kind of low-floor bogie and 100% low-floor tramcar, and the bogie can have Effect ground solves the problems, such as that arrangement space is not enough above existing low-floor bogie.
To achieve these goals, the technical scheme adopted by this utility model is:
A kind of low-floor bogie, including framework and setting bolster architecturally for coupling with car body;Its structure Feature is, sink to forming U-shape structure in the middle part of the framework, and the middle part of the bolster sinks to being formed and coordinates in the middle part of the framework U-shape structure;Secondary spring is provided between the framework and bolster.
Thus, the middle part of bolster and framework is recessed, and secondary spring is arranged between framework and bolster, can substantially reduce The setting height(from bottom) of secondary spring, solves the problems, such as that arrangement space is not enough above existing low-floor bogie, such that it is able to turn To above frame, both sides are respectively arranged multiple seats.
According to embodiment of the present utility model, this utility model can also be made it is further optimize, below for optimization after The technical scheme of formation:
Preferably, the bottom of the secondary spring is fixed on the underframe of framework, and the top of the secondary spring is fixed on shakes The end of pillow.
According to embodiment of the present utility model, the secondary spring has four, and four secondary springs are symmetricly set on two-by-two Below the end of bolster.
Preferably, the framework includes underframe, and four are symmetrically fixed on the cantilevered leg on underframe, and for hanging The frame girder of driving means;The floor projection of the framework is in integrally H types;The underframe is provided with secondary spring mounting seat.
In order to realize that at least one of lightweight, the bolster, frame girder, supporting leg and underframe part is hollow structure. It is preferred that the bolster, frame girder, supporting leg and underframe are welded into body structure by sheet material.
Preferably, the bolster includes the bolster base positioned at medium position, is arranged on being provided with for bolster end upper surface Spring fastening, is arranged on longitudinal stop mounting seat of bolster end side, and the horizontal stop for being arranged on bolster base end Mounting seat.
Equipped with the hydraulic control unit and hydraulic cushion unit being fixedly linked with car body respectively on the framework, and it is used for The passive type clamp being connected with brake disc.
The low-floor bogie also includes magnetic rail braking device.It is preferred that the magnetic rail braking device is by bolt and steering Frame connects.
Based on same inventive concept, this utility model additionally provides a kind of 100% low-floor tramcar, and which includes turning The wheel being connected with bogie frame to frame and by primary spring is to composition;Characterized in that, the bogie is described low Floor bogie, the both sides above bogie are disposed with multiple seats.
The wheel is provided with the driving means and brake unit that are mounted on bogie frame to the outside for constituting;On the bolster It is provided with vertical damper and lateral damper.
By said structure, the bogie frame of tramcar power truck, including middle part for U-shaped, the bogie Framework is that spring is designed at two side position of underframe by two, and underframe is designed to two is spring abutment, while avoiding external drivetrain System, is provided with the secondary spring of helical steel springs in the secondary spring mounting seat, the secondary spring is used to support bolster, car Body;The supporting leg bottom of the bogie frame is provided with wheel to axle-box positioning device, and it is rubber spring that one is provided with wheel, Wheel is that rubber spring carries the bogie frame to constituting by described one.
Preferably, the bogie structure part includes framework underframe, four cantilevered legs being symmetrically welded on underframe, For hanging the frame girder of driving means, for coupling the bolster of transmission pull strength and rotation with car body.Wherein, the bolster, Frame girder, framework supporting leg, framework underframe are hollow structure, and the framework is provided with U-shape structure, sets in the middle part of the U-shape structure It is equipped with the secondary spring mounting seat.
Preferably, the bolster, frame girder, framework supporting leg, framework underframe are hollow box body structure, are welded with steel plate Form, inside is welded with for increasing the gusset of intensity.
Preferably, the bolster is respectively provided on two sides with four stop mounting seats, and stop is arranged at the stop mounting seat, The stop is used to transmit the longitudinal force between car body and power truck, using gum elastic.
Preferably, vertical damper is provided with the bolster, the vertical damper is used for decay car body and power turn To the vibration between frame.Lateral damper is provided with the bolster, the lateral damper is used for decay car body and power turn To the cross force between frame.
Preferably, driving means are provided with the outside of the vertical damper, the driving means are distributed in bogie two Side, by a motor and a gear-box rigid attachment together, and is connected with wheel by torsion plate, and the driving means are hanged Hang on the frame girder.
Preferably, the framework supporting leg junction is provided with sander and rim lubricating device, and the sander is used Frictional force in increase vehicle launch and braking procedure between wheel and track, the rim lubricating device are used to reduce wheel Wheeling edge wearing.
Preferably, the bogie includes hydraulic control unit, hydraulic cushion unit, the hydraulic control unit, hydraulic pressure Buffer cell is connected with car body by bolt.
Compared with prior art, the beneficial effects of the utility model are:Old bogie secondary suspension is located at bolster two ends, Take up room larger, be unfavorable for top seat arrangement, this utility model moves on to secondary suspension position on the underframe of framework, reduces Take up room, top numbers of seats can be increased.
Description of the drawings
Fig. 1 is the structure principle chart of this utility model one embodiment(Top view);
Fig. 2 is the axle surveys view of Fig. 1;
Fig. 3 is the structural representation of framework described in the utility model;
Fig. 4 is the structural representation of bolster described in the utility model.
Specific embodiment
Below with reference to accompanying drawing and in conjunction with the embodiments describing this utility model in detail.It should be noted that not conflicting In the case of, the feature in embodiment and embodiment in this utility model can be mutually combined.For sake of convenience, hereinafter such as Occur " on ", D score, "left", "right" printed words, only represent it is consistent with the upper and lower, left and right direction of accompanying drawing itself, not to structure Play restriction effect.
A kind of power truck of 100% low-floor tramcar, as depicted in figs. 1 and 2, including the steering that middle part is U-shaped Bogie frame 1 is designed as middle part concave shape, it is possible to decrease secondary spring setting height(from bottom), the design can be in power by framework frame 1 Above bogie, both sides are respectively arranged 8 seats, totally 16 seats, and rubber spring tolerable injury level displacement is larger, non-linear vertical Rigidity can adapt to car body floor face requirement for height under the conditions of different loads.By shaking the head, backstop 10 is limited, it is allowed to electronic-controlled power steering Frame is 12 ° with the panning angle of car body.
Secondary spring mounting seat is provided with the medium position of bogie frame 1, is provided with the secondary spring mounting seat Helical steel springs secondary spring 3, the secondary spring 3 are used to support car body, are arranged on bogie frame 1 by mounting seat, on End is connected with bolster 2, bearing body weight.
Wheel is provided with to axle-box positioning device with reference to the bottom of Fig. 1 bogie frames 1, it is rubber that one is provided with wheel Spring 11, it is that rubber spring 11 carries bogie frame 1 to take turns to constituting 9 by one, and each wheel is to there is four one to be rubber spring. Wheel-rail force is that rubber spring 11 is delivered to bogie frame 1 by one, one be rubber spring only allow axle bridge and framework it Between 3 ~ 5mm displacements.Axle box casting is processed, and wheel adopts elastic wheel.Drive and brake component is located at lateral wheel.Electronic-controlled power steering On frame, dress small-diameter wheels are low land plate face to being capable of achieving bogie top, so as to permutation car realizes 100% low-floor.
The utilization of the parts such as power truck of the present utility model due to stabilising arrangement, is, secondary spring so that power Bogie has good guidance quality, safety, stability and comfortableness.
As shown in figure 3, bogie frame 1 includes framework underframe 107;Four are symmetrically welded at 107 square frame four of framework underframe The framework supporting leg 108 of individual drift angle and four are symmetrically welded at 108 two ends of framework supporting leg, for connecting the frame girder of driving means 109。
As shown in figure 4, bolster 2 includes bolster base 110, the spring fastening 111 being symmetrically welded on bolster base 110.
Wherein, framework underframe 107, framework supporting leg 108, frame girder 109, bolster base 110 are hollow box body structure, structure Secondary spring mounting seat 112 is provided with the middle part of frame underframe 107.Secondary spring 3 for bearing body is arranged on the secondary spring At mounting seat 112.I.e. secondary spring 3 is arranged on framework underframe 107, and secondary spring is arranged on framework underframe 107, can be big The big setting height(from bottom) for reducing secondary spring 3, the design can be respectively arranged 8 seats in both sides above power truck, and totally 16 Individual seat.
Framework 1 is welded with steel plate with bolster 2.By Strength co-mputation, on the premise of proof strength, mitigate as far as possible Weight, it is ensured that the lightweight of framework.Framework supporting leg 108 middle part recessed portion rounding off, it is to avoid high-stress area appearance, can Meet normal service requirement.To ensure to obtain preferable intensity, framework underframe 107, framework supporting leg on the premise of weight is reduced 108th, gusset is welded with inside frame girder 109, bolster base 110, and under bad track condition, it is more equal that wheel bears load Cloth.
Bolster 2 is respectively arranged at two ends with Holder for hanging household utensiles 114 and four longitudinal stop mounting seats 113,113 points of longitudinal stop mounting seat An Zhuan not 111 both sides of spring fastening.Traction rubber metal pad 12 is used to transmit the longitudinal force between car body and power truck, traction The press-in gum elastic of rubber metal pad 12, makes traction rubber metal pad 12 have the effect for reducing longitudinal direction of car impact.
The center position of bolster base 110 is provided with horizontal backstop mounting seat 115, and it is horizontal that horizontal backstop 13 is installed on this At backstop mounting seat 115, horizontal backstop 13 can limit the lateral displacement of bogie and car body.The inner side of framework supporting leg 108 is with vertical Two stopping seats 10 of shaking the head are symmetrically arranged with to centrage, four shake stopping seats 10 on four supporting legs 108, are provided with altogether.Shake the head It is 12 ° with the panning angle of car body that backstop 10 allows power truck.It is symmetrically arranged with two vertical to subtract on the outside of spring fastening 111 Shake device 8.
The vibration that vertical damper 8 can be decayed between power truck and car body, improves vehicle operation stability, comfortable Property.Framework 1 has lifting function, realizes when lifting car body, and bogie is not separated with car body.Set on the outside of vertical damper 8 Driving means are equipped with, the driving means are rigidly connected by motor 4 and gear-box 5, and are connected with wheel by torsion plate, Driving equipment suspension is on frame girder 109.
The oscillation crosswise that lateral damper 7 can be decayed between power truck and bolster, prevents vehicle from crawling, and improves vehicle Operation stability, comfortableness.
The outside of framework supporting leg 108 is symmetrically arranged with two gear-box mounting seats 116, and gear-box mounting seat 116 is used to move On the outside of power bogie, the driving means of slung-load gear case 5 and the composition of motor 4, are provided with two gear-boxes altogether on four supporting legs 108 Mounting seat 116.
Hydraulic control unit 14, release of brake unit 15, hydraulic control unit 14, system are additionally provided with bogie frame 1 Dynamic unit 15 of alleviating is connected with framework 1 by bolt, and the passive type clamp 16 for controlling power truck clamps brake disc 6, Play braking action.Passive type clamp 16 is connected with brake disc 17 respectively by bolt.Passive type clamp 16 is passive type hydraulic pressure Control, occurs under the failure conditions such as oil leak in brake piping, and train can apply braking automatically, and entail dangers to traffic safety, does not work as liquid Pressure control unit 14 break down uncontrollable passive type clamp 16 when, by release of brake unit 15 can alleviate passive type folder Pincers 16.
Referring to figs. 1 to Fig. 4, secondary spring 3 is located in the middle part of framework underframe 107, and top is connected with bolster 2 by bolt, car Body bottom is fixed on power truck by alignment pin, and as framework 1 has lifting function, secondary spring 3 will not with bolster 2 Depart from power truck.Wherein, secondary spring 3 is helical steel springs.Laterally backstop 13 and traction rubber metal pad 12 are arranged on bolster 2 On.Bogie constitutes a rigid power unit together with being rigidly connected to gear-box 5 per the motor 4 of side one.This rigidity Unit is connected with frame girder 109 by the elastic lifting hanging point on gear-box 5.The torsion plate of gear-box 5 is bolt-connected to car On wheel.Vertical damper 8 is connected with bolster 2 by bolt one end, and the other end is connected with framework underframe 106.Magnetic rail braking device 18 are arranged on framework 1 by bolt, positioned on rail level, between two wheels, which is rubbed after leaning on electric energy triggering on rail.Wherein, Axle box casting is processed, and wheel adopts elastic wheel.
Secondary spring 3 for bearing body is arranged at the secondary spring mounting seat 112.I.e. secondary spring 3 is arranged on On framework underframe 107, secondary spring is arranged on framework underframe 107, the setting height(from bottom) of secondary spring 3 can be substantially reduced, should Design can be respectively arranged 8 seats in both sides above power truck, totally 16 seats.
To sum up, power truck of the present utility model due to vibration absorber, one be, the utilization of the part such as secondary spring, make Obtain power truck and there is good guidance quality, safety, stability and comfortableness.Rim lubricating device can effectively reduce car Wheel rim wears away, and increases the service life of wheel.Power truck population structure compact in design is reasonable, structure is novel, and layout is fitted Close 100% low-floor modern tram car load demand.Bogie modularized design and the reasonable Arrangement of structure, for bogie Later maintenance and maintenance are provided convenience condition.
Finally it should be noted that:Various embodiments above is only illustrating the technical solution of the utility model, rather than which is limited System;Although being described in detail to this utility model with reference to foregoing embodiments, one of ordinary skill in the art should Understand:Which still can be modified to the technical scheme described in foregoing embodiments, or to which part or whole Technical characteristic carries out equivalent;And these modifications or replacement, do not make the essence of appropriate technical solution depart from this practicality new The scope of each embodiment technical scheme of type.

Claims (15)

1. a kind of low-floor bogie, including framework(1)And it is arranged on framework(1)On for the bolster that couples with car body(2); Characterized in that, the framework(1)Middle part sinks to forming U-shape structure, the bolster(2)Middle part sink to being formed and the framework (1)The U-shape structure that middle part coordinates;The framework(1)With bolster(2)Between be provided with secondary spring(3);The bolster(2)Including Positioned at the bolster base of medium position(110), it is arranged on bolster(2)End upper surface is provided with spring fastening(111), it is arranged on Bolster(2)Longitudinal stop mounting seat of end sides(113), and it is arranged on bolster base(110)The horizontal stop peace of end Dress seat(115).
2. low-floor bogie according to claim 1, it is characterised in that the secondary spring(3)Bottom be fixed on Framework(1)Underframe(107)On, the secondary spring(3)Top be fixed on bolster(2)End.
3. low-floor bogie according to claim 1, it is characterised in that the secondary spring(3)There are four, four two It is spring(3)Bolster is symmetricly set on two-by-two(2)End below.
4. the low-floor bogie according to one of claim 1-3, it is characterised in that the framework(1)Including underframe (107), four are symmetrically fixed on underframe(107)On cantilevered leg(108), and for hanging the frame girder of driving means (109);The framework(1)Floor projection integrally be in H types;The underframe(107)It is provided with secondary spring mounting seat(112).
5. low-floor bogie according to claim 4, it is characterised in that the bolster(2), frame girder(109), supporting leg (108)And underframe(107)At least one of part be hollow structure.
6. the low-floor bogie according to one of claim 1-3, it is characterised in that the framework(1)It is upper that difference is housed The hydraulic control unit being fixedly linked with car body(14)With hydraulic cushion unit(15), and be used for and brake disc(17)Connection Passive type clamp(16).
7. low-floor bogie according to claim 1, it is characterised in that the low-floor bogie also includes track system Dynamic device(18).
8. a kind of 100% low-floor tramcar, including bogie and pass through primary spring(11)The wheel being connected with bogie frame To composition(9);Characterized in that, the bogie is low-floor bogie, the both sides above bogie are disposed with multiple seats Chair;The low-floor bogie includes framework(1)And it is arranged on framework(1)On for the bolster that couples with car body(2);It is described Framework(1)Middle part sinks to forming U-shape structure, the bolster(2)Middle part sink to being formed and the framework(1)The U that middle part coordinates Type structure;The framework(1)With bolster(2)Between be provided with secondary spring(3);
The wheel is to composition(9)Outside be provided with the driving means and brake unit being mounted on bogie frame;On the bolster It is provided with vertical damper and lateral damper.
9. 100% low-floor tramcar according to claim 8, it is characterised in that the secondary spring(3)Bottom It is fixed on framework(1)Underframe(107)On, the secondary spring(3)Top be fixed on bolster(2)End.
10. 100% low-floor tramcar according to claim 8, it is characterised in that the secondary spring(3)Have four It is individual, four secondary springs(3)Bolster is symmetricly set on two-by-two(2)End below.
The 11. 100% low-floor tramcars according to one of claim 8-10, it is characterised in that the framework(1)Bag Include underframe(107), four are symmetrically fixed on underframe(107)On cantilevered leg(108), and for hanging driving means Frame girder(109);The framework(1)Floor projection integrally be in H types;The underframe(107)It is provided with secondary spring mounting seat (112).
12. 100% low-floor tramcars according to claim 11, it is characterised in that the bolster(2), frame girder (109), supporting leg(108)And underframe(107)At least one of part be hollow structure.
The 13. 100% low-floor tramcars according to one of claim 8-10, it is characterised in that the bolster(2)Bag Include the bolster base positioned at medium position(110), it is arranged on bolster(2)End upper surface is provided with spring fastening(111), arrange In bolster(2)Longitudinal stop mounting seat of end sides(113), and it is arranged on bolster base(110)The horizontal stop of end Mounting seat(115).
The 14. 100% low-floor tramcars according to one of claim 8-10, it is characterised in that the framework(1)On Equipped with the hydraulic control unit being fixedly linked with car body respectively(14)With hydraulic cushion unit(15), and be used for and brake disc (17)The passive type clamp of connection(16).
15. 100% low-floor tramcars according to claim 8, it is characterised in that the low-floor bogie is also wrapped Include magnetic rail braking device(18).
CN201620850067.9U 2016-08-08 2016-08-08 A kind of low-floor bogie and 100% low-floor tramcar Expired - Fee Related CN206049695U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620850067.9U CN206049695U (en) 2016-08-08 2016-08-08 A kind of low-floor bogie and 100% low-floor tramcar

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620850067.9U CN206049695U (en) 2016-08-08 2016-08-08 A kind of low-floor bogie and 100% low-floor tramcar

Publications (1)

Publication Number Publication Date
CN206049695U true CN206049695U (en) 2017-03-29

Family

ID=58380139

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201620850067.9U Expired - Fee Related CN206049695U (en) 2016-08-08 2016-08-08 A kind of low-floor bogie and 100% low-floor tramcar

Country Status (1)

Country Link
CN (1) CN206049695U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108248629A (en) * 2017-12-27 2018-07-06 中车唐山机车车辆有限公司 Bogie
CN108263415A (en) * 2017-12-27 2018-07-10 中车唐山机车车辆有限公司 Bogie
CN108556866A (en) * 2017-12-27 2018-09-21 中车唐山机车车辆有限公司 Bogie frame

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108248629A (en) * 2017-12-27 2018-07-06 中车唐山机车车辆有限公司 Bogie
CN108263415A (en) * 2017-12-27 2018-07-10 中车唐山机车车辆有限公司 Bogie
CN108556866A (en) * 2017-12-27 2018-09-21 中车唐山机车车辆有限公司 Bogie frame

Similar Documents

Publication Publication Date Title
CN201249778Y (en) Double-shaft power truck for a partial low-floor light rail trolleybus
CN102490755B (en) Bogie for high-speed rail wagon
CN206049695U (en) A kind of low-floor bogie and 100% low-floor tramcar
CN102490754B (en) Bogie framework for high-speed rail wagon
CN109878545B (en) Tramcar and bogie
CN103802852A (en) Power bogie of tramcar
CN106740897B (en) High speed railway car and its bogie, wheel are to driving device
CN109747676B (en) Railway vehicle bogie with eddy current braking device and railway vehicle
CN110329301B (en) Narrow-gauge vehicle bogie and manufacturing method thereof
CN205652139U (en) Rail vehicle bogie draw gear of central authorities and bogie
CN102530005A (en) Four-shaft locomotive steering frame arranged under shaft box
CN206781766U (en) A kind of 100% low-floor rail vehicle and its power truck
CN111559404A (en) Bogie for engineering truck and engineering truck
JP5945137B2 (en) Monorail vehicle
CN104057970A (en) Low floor tramcar steering bogie
CN110450807B (en) Single-shaft bogie
CN108146461B (en) A kind of low-floor tramcar power car bogie
CN205601849U (en) Non - power truck
CN207631264U (en) A kind of track engineering vehicle bogie and its single stage suspension device
CN101032967A (en) Single axle bogie for track vehicle
CN105857332A (en) Tramcar bogie with swing bolster 100% floor
CN205440385U (en) Locomotive bogie
CN202368590U (en) Four-axis locomotive bogie
CN203306025U (en) Front position control bogie
CN209938607U (en) Suspension type monorail vehicle traction suspension device suitable for large ramp

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20170329

Termination date: 20210808