CN105253025A - Locomotive and pantograph - Google Patents
Locomotive and pantograph Download PDFInfo
- Publication number
- CN105253025A CN105253025A CN201510716593.6A CN201510716593A CN105253025A CN 105253025 A CN105253025 A CN 105253025A CN 201510716593 A CN201510716593 A CN 201510716593A CN 105253025 A CN105253025 A CN 105253025A
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- bow
- pantograph
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- cylinder
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Abstract
The invention provides a pantograph which comprises an insulator assembly, a chassis assembly, a hinge mechanism and a pantograph bow assembly, and further comprises an elastic connector pantograph height rising device used for rising of pantograph height, and a pantograph height reducing cylinder used for overcoming the pantograph height rising elasticity of the elastic connector pantograph height rising device, wherein both the elastic connector pantograph height rising device and the pantograph height reducing cylinder are arranged on the chassis assembly; two ends of the elastic connector pantograph height rising device as well as those of the pantograph height reducing cylinder are connected with the hinge mechanism and the chassis assembly respectively; the hinge mechanism is used for supporting the pantograph bow assembly; the elastic connector pantograph height rising device exerts force on the hinge mechanism when being in an initial state, so that the hinge mechanism is in a pantograph height rising state, while the pantograph height reducing cylinder exerts force on the hinge mechanism to inhibit pantograph height rising; when compressed gas is pumped into the pantograph height reducing cylinder, the pantograph height reducing cylinder does not inhibit pantograph height rising any more, and pantograph height rising is realized. Therefore, pantograph height rising and pantograph height reducing are realized, the same height pressure difference is low, and the pantograph height rising speed and the pantograph height reducing speed are controllable. The invention further provides a locomotive comprising the pantograph.
Description
Technical field
The application relates to rolling stock equipment technical field, more particularly, relates to a kind of pantograph.The application also relates to a kind of rolling stock comprising above-mentioned pantograph.
Background technology
At present, what most subway and city rail vehicle adopted is air sac pantograph, and rising bow during air sac pantograph airbag aeration, falls bow without during gas by deadweight.The shortcoming of air sac pantograph is that same high pressure difference is large.
Therefore, how providing that a kind of same high pressure difference is little, the controlled pantograph of bow speed falls in rising bow, is current those skilled in the art's problem demanding prompt solution.
Summary of the invention
In view of this, this application provides a kind of pantograph, to realize providing, a kind of same high pressure difference is little, the controlled pantograph of bow speed falls in rising bow.Present invention also provides a kind of rolling stock comprising above-mentioned pantograph.
In order to achieve the above object, the application provides following technical scheme:
A kind of pantograph, comprise insulator assembling, underframe assembling, linkage, bow assembling, also comprise for the Flexible Connector bow-lifting device of rising bow and fall bow cylinder for the rising bow elastic force that overcomes Flexible Connector bow-lifting device, Flexible Connector bow-lifting device and fall bow cylinder be all arranged at underframe assembling on, and the two ends of the two respectively with linkage and underframe assembly and connection.
Optionally, Flexible Connector bow-lifting device is the spring bow-lifting device of the multiple extended states be arranged side by side.
Optionally, spring bow-lifting device comprises rising bow spring, and rising bow spring one end is provided with connecting screw rod, and connecting screw rod end is provided with webge piece, and the rising bow spring other end is provided with clamping plate, clamping plate is connected with steel rope assembling.
Optionally, spring bow-lifting device is by webge piece and connecting screw rod and underframe assembly and connection, and spring bow-lifting device is connected with the adjustment plate on the lower arm rod of linkage by steel rope assembling.
Optionally, fall bow cylinder and comprise the cylinder spring being positioned at one end and the cylinder body being positioned at the other end, cylinder body and underframe assembly and connection, cylinder spring is connected with the adjustment plate on the lower arm rod of linkage; When cylinder body is filled with pressurized air, cylinder spring by cylinder body compression, remove restriction to lower arm rod.
Optionally, bow assembling comprises carbon slipper, bow angle and spring case assembling, and bow assembling is by the upper frame upper end thereof of spring case assembling with linkage.
The application also provides a kind of rolling stock, and the pantograph comprising locomotive body and arrange thereon, pantograph is the pantograph of above-mentioned any one.
The pantograph that the application provides, comprise insulator assembling, underframe assembling, linkage, bow assembling, also comprise for the Flexible Connector bow-lifting device of rising bow and fall bow cylinder for the rising bow elastic force that overcomes Flexible Connector bow-lifting device, Flexible Connector bow-lifting device and fall bow cylinder be all arranged at underframe assembling on, and the two ends of the two respectively with linkage and underframe assembly and connection.Insulator assembling is used for high voltage electrical isolation, underframe assembling is for supporting total, linkage is used for supporting bow assembling, Flexible Connector bow-lifting device initial condition applies power to linkage, makes linkage be in rising bow state, and fall bow cylinder power is applied to linkage, suppress rising bow, when to fall bow cylinder be filled with pressure gas time, fall bow cylinder the suppression of linkage rising bow is removed, realize rising bow.Realize rising bow and fall bow in this way, achieving provides that a kind of same high pressure difference is little, the controlled pantograph of bow speed falls in rising bow.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the application, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The front view of the pantograph that Fig. 1 provides for the application;
The birds-eye view of the pantograph that Fig. 2 provides for the application;
The insulator package assembly schematic diagram of the pantograph that Fig. 3 provides for the application;
The spring bow-lifting device structural representation of the pantograph that Fig. 4 provides for the application;
The structural representation falling bow cylinder of the pantograph that Fig. 5 provides for the application;
The front view of the bow assembling of the pantograph that Fig. 6 provides for the application;
The birds-eye view of the bow assembling of the pantograph that Fig. 7 provides for the application;
The front view falling bow notch indicator of the pantograph that Fig. 8 provides for the application;
The birds-eye view falling bow notch indicator of the pantograph that Fig. 9 provides for the application;
In upper figure: 1 is underframe assembling; 2 is lower arm rod; 3 is upper frame; 4 is pull bar; 5 is spring bow-lifting device; 6 is trammel beam; 7 is bow assembling; 8 for falling bow cylinder; 9 for falling bow notch indicator; 10 is insulator assembling; 11 is hexagonal bar iron; 12 is spring contact packing ring; 13 is insulator; 14 is steel rope assembling; 15 is clamping plate; 16 is rising bow spring; 17 is connecting screw rod; 18 is webge piece; 19 is cylinder spring strut assembly welding; 20 is the outer spring of cylinder; 21 is spring in cylinder; 22 is spring in cylinder; 23 is piston assembling; 24 is cylinder body; 25 is air cylinder front cover assembling; 26 is seal ring; 27 is lock strap; 28 is dust protecting cap; 29 is hexagon thin nut; 30 is forked element; 31 is swivel arm; 32 is bow angle assembly welding; 33 is pin; 34 is carbon slipper; 35 is spring case assembling; 36 is rotating shaft; 37 is electric inductor; 38 is adapter plate; 39 is tablet; 40 hose clamps.
Detailed description of the invention
This application provides a kind of pantograph, achieving provides that a kind of same high pressure difference is little, the controlled pantograph of bow speed falls in rising bow.Present invention also provides a kind of rolling stock comprising above-mentioned pantograph.
Below in conjunction with the accompanying drawing in the embodiment of the present application, carry out clear, complete description to the technical scheme in the embodiment of the present application, obviously, described embodiment is only some embodiments of the present application, instead of whole embodiments.Based on the embodiment of the application, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the application's protection.
The front view of the pantograph that Fig. 1 provides for the application; The birds-eye view of the pantograph that Fig. 2 provides for the application; The insulator package assembly schematic diagram of the pantograph that Fig. 3 provides for the application; The spring bow-lifting device structural representation of the pantograph that Fig. 4 provides for the application; The structural representation falling bow cylinder of the pantograph that Fig. 5 provides for the application; The front view of the bow assembling of the pantograph that Fig. 6 provides for the application; The birds-eye view of the bow assembling of the pantograph that Fig. 7 provides for the application; The front view falling bow notch indicator of the pantograph that Fig. 8 provides for the application; The birds-eye view falling bow notch indicator of the pantograph that Fig. 9 provides for the application.
The present invention is a kind of pantograph of spring cylinder formula, comprises insulator assembling, underframe assembling, linkage, bow assembling, Flexible Connector bow-lifting device, falls bow cylinder, falls bow notch indicator etc.In fact, Flexible Connector bow-lifting device generally selects spring bow-lifting device, and multiple spring can be selected arranged side by side, i.e. dual spring bow-lifting device.
Insulator assembling 10 comprises hexagonal bar iron 11, spring contact packing ring 12, insulator 13.Four support frame for insulators of underframe assembling all have circular hole, spring contact packing ring 12 is placed on four circular holes, pantograph, through after underframe assembling support frame for insulator, is arranged on insulator 13 through spring contact packing ring 12, thus pantograph and top insulation is isolated by four hexagonal bar irons 11.
Underframe assembling 1 comprises underframe assembly welding, bow support spring, rubber backstop, four hole deflecting plates etc.Rigid frame is formed by shaped steel assembly welding, and it is the base part of whole pantograph, is fixed on roof by insulator assembling 10.Underframe is equipped with two spring bow-lifting devices 5, and falls bow cylinder 8 and a set of linkage.When pantograph be in bow position falls and time, bow support spring plays and supports bow effect.Three rubber backstops are equipped with in underframe assembling, and when bow falls in pantograph, rubber backstop plays buffer action, avoids linkage with underframe rigid contact, thus protection pantograph.Four hole deflecting plate connecting cables are sent to vehicle interior for vehicle electric current.
Linkage comprises lower arm rod 2, upper frame 3, pull bar 4 and trammel beam 6.Lower arm rod 2 is connected with underframe 1 with the lower end of pull bar 4, and upper end and the upper frame 3 of lower arm rod 2 and pull bar 4 are hinged, the upper end of upper frame 3 and trammel beam 8 and bow assembly and connection, and trammel beam 6 lower end is connected with lower arm rod 2.In whole linkage, lower arm rod 2, pull bar 4, upper frame 3, trammel beam 6 form two lanar four rod mechanisms.Lower arm rod 2 adopts steel pipe welding to be connected into I-shaped structure.Upper frame 3 adopts overall aluminum alloy adapter bonnet to be welded, and alleviates the total quality of pantograph, adopts diagonal line bar to strengthen the lateral stiffness of pantograph simultaneously.Pull bar 4 adopts aluminium-alloy pipe to assemble, two ends adopt universal bearing and underframe assemble 1 and upper frame 3 hinged, decrease pantograph internal friction.Trammel beam 6 adopts steel-pipe welding to form.Pull bar 4 and trammel beam 6 length all adjustable, can finely tune the four-bar mechanism parameter of pantograph, thus obtain better lifting bow Static Contact pressure curve, ensure that the stable of pantograph is flowed.
Spring bow-lifting device 5, mainly comprises steel rope assembling 14, clamping plate 15, rising bow spring 16, connecting screw rod 17, webge piece 18.Steel rope is assembled 14 one end and is fixed on the clamping plate 15 of rising bow spring 16, the other end is fixed on the adjustment plate on lower arm rod 2, rising bow spring 16 one end is connected with clamping plate 15, and the other end is by connecting screw rod 17 and webge piece 18 and underframe assembly and connection, and adjustment plate is fixed on lower arm rod 2.When pressing rising bow button in driver's cab, fall bow cylinder 8 to inflate, remove the constraint to lower arm rod 2, now rising bow spring works contraction, produce pulling force, pass to lower arm rod 2 by steel rope assembling 14 through adjustment plate, pull lower arm rod 2 and make it rotate relative to underframe 1, thus realize the rising bow operation of whole pantograph.
Fall bow cylinder 8 mainly to comprise in cylinder spring strut assembly welding 19, the outer spring 20 of cylinder, cylinder spring 22, piston assembling 23, cylinder body 24, air cylinder front cover assembling 25, seal ring 26, lock strap 27, dust protecting cap 28, hexagon thin nut 29, forked element 30 and movable swivel arm 31 in spring 21, cylinder and form.The whole bow cylinder lower end that falls 1 to be connected by bolt and underframe assembling, swivel arm 31 left upper end and lower arm rod 2 hinged, be a movable block.When rising bow electromagnetic valve obtains electric, fall bow cylinder 8 to inflate, promote piston assembling 23, pull swivel arm 31 to remove constraint to lower arm rod 2, now rising bow spring works and realizes rising bow, when rising bow electromagnetic valve dead electricity, fall bow cylinder 8 to be vented, in the outer spring 20 of cylinder, cylinder, spring 22 3 Compress Spring reinstatements in spring 21, cylinder, overcome the moment that rising bow spring 16 produces, promote swivel arm 31 dieback lower arm rod 2, make pantograph fall bow.
Bow is assembled 7 parts and is comprised bow angle assembly welding 32, pin 33, carbon slipper 34, spring case assembling 35 and rotating shaft 36.Bow assembles 7 parts by upper frame 3 upper end thereof of spring case assembling with linkage, and bow can rotate by push pipe on upper frame 3.Carbon slipper adopts two pieces of metal-impregnated carbon slides, can bear larger running current load and dead load.Bow hangs and adopts spring case to assemble 35 structures, one end of spring case assembling 35 is connected with the rotating shaft 36 in upper frame with adapter plate assembly welding by connecting panel, the other end is connected with guide yoke by bolt, make bow assemble 7 parts and there is certain degree of freedom, the shock and vibration between bow net when pantograph is normally run can be absorbed, reduce the abrasion of carbon slipper 34 and contact net lines, improve pantograph by stream stability, thus ensure that the reliability of vehicle operating.Bow angle assembly welding 32 is designed to the angular form with certain radian, can prevent pantograph from occurring to bore net, hang the phenomenons such as bow.
Fall bow notch indicator and comprise electric inductor 37, stay bearing plate 38, tablet 39.Pantograph upper frame push pipe installs a tablet 39, and the below insulating part of tablet 39 supports an electric inductor 37.When bow falls in pantograph, when tablet drops in the induction zone of electric inductor, electric inductor provides and falls bow signal; During pantograph rising bow, the position of tablet exceeds the distance of reaction of electric inductor, will provide pantograph rising bow signal.Its Main Function is to provide pantograph ascending, descending bow signal, the current status of display pantograph.Tablet 39 is stainless steel material, adopts hose clamp 40 to be fixed on pantograph upper frame push pipe, and during current collecting bow lifting bow, tablet meeting 39 is along with upper frame push pipe together rise and fall.
The present invention adopts one group of rising bow spring installation and an air cylinder device to realize current collecting bow lifting bow.Its principle of work is as follows: when pressurized air enter fall in bow cylinder time, by compression cylinder spring, remove the constraint of falling bow cylinder 8 pairs of lower arm rods 2, now two groups of rising bow springs will make pantograph rise, and pantograph collector head and contact system are kept in touch state.When falling bow cylinder 8 and being vented, the Compress Spring fallen in bow cylinder 8 works, and will overcome the power of rising bow spring, the bow of pantograph is declined and keeps dropping in two rubber backstops.Operationally, fall bow cylinder 8 and be supplied with pressurized air always, pantograph can change with the height change of contact system pantograph, keeps the contact with contact system.Excision air feed, pantograph automatically can fall bow.
Further description the technical program, the pantograph that the application provides comprises insulator assembling, underframe assembling 1, linkage, bow assembling 7, spring bow-lifting device 5, falls bow cylinder 8 etc.Comprise an insulator assembling, spring bow-lifting device 5 is arranged on underframe assembling 1 and lower arm rod 2, one falls bow cylinder 8 is arranged on underframe assembling 1 and lower arm rod 2, lower arm rod 2 is assembled 1 with the lower end of pull bar with underframe and is connected, the upper end of lower arm rod 2 and pull bar and upper frame join, the linkage of lower arm rod 2, pull bar 4, upper frame 3, the activity of trammel beam 6 composition.Upper frame is assembled 7 with the upper end of trammel beam with bow and is connected, and bow assembling 7 is connected with upper frame assembles 35 elasticity by rotating shaft and spring case and connect.Insulator assembling is used for high voltage electrical isolation, underframe assembling 1 is for supporting total, linkage is used for supporting bow assembling 7, Flexible Connector bow-lifting device initial condition applies power to linkage, makes linkage be in rising bow state, and falls bow cylinder 8 pairs of linkages applying power, suppress rising bow, when to fall bow cylinder 8 be filled with pressure gas time, the suppression of falling bow cylinder 8 pairs of linkage rising bows is removed, and realizes rising bow.Realize rising bow and fall bow in this way, achieving provides that a kind of same high pressure difference is little, the controlled pantograph of bow speed falls in rising bow.
The pantograph that the application provides, its effect collects obtaining current from contact system to use for vehicle, has low fold height, and operating range is wide, safeguards the features such as simple and convenient.Adopt the technical scheme of the application, when falling non-compressed air in bow cylinder 8, falling bow cylinder 8 inner spring and overcoming rising bow spring installation moment and realize falling bow operation; When fall bow cylinder 8 in be filled with pressurized air time, remove the constraint to rising bow spring installation, pantograph realizes rising bow under the effect of rising bow spring installation.Fall bow cylinder 8 partly integrated lifting bow pressure regulating valve, adjustable pantograph rising bow, fall bow speed, ensure that pantograph is normally elevated bow.Pantograph has the features such as lateral stiffness is large, lightweight, fold height is little, safety is high, easy care, clean environment firendly simultaneously.And little with high pressure difference, eliminate air bag pantograph with the large shortcoming of high pressure difference.The present invention has enriched metro pantograph kind, for user selects the many one of metro pantograph to select.
Based on the pantograph provided in above-described embodiment, present invention also provides a kind of rolling stock, the pantograph comprising locomotive body and arrange thereon, pantograph is the pantograph of above-mentioned any embodiment.
Because this rolling stock have employed the pantograph of above-described embodiment, so the beneficial effect that this rolling stock is brought by this pantograph please refer to above-described embodiment.
In this specification sheets, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the application.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from the spirit or scope of the application, can realize in other embodiments.Therefore, the application can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (7)
1. a pantograph, comprise insulator assembling, underframe assembling (1), linkage, bow assembling (7), it is characterized in that, also comprise and bend cylinder (8) for the Flexible Connector bow-lifting device of rising bow and the falling of rising bow elastic force for overcoming described Flexible Connector bow-lifting device, described Flexible Connector bow-lifting device and the described bow cylinder that falls all are arranged on described underframe assembling (1), and the two ends of the two are assembled (1) with described linkage and described underframe respectively and are connected.
2. pantograph as claimed in claim 1, it is characterized in that, described Flexible Connector bow-lifting device is the spring bow-lifting device (5) of the multiple extended states be arranged side by side.
3. pantograph as claimed in claim 2, it is characterized in that, described spring bow-lifting device (5) comprises rising bow spring, described rising bow spring one end is provided with connecting screw rod, described connecting screw rod end is provided with webge piece (18), the described rising bow spring other end is provided with clamping plate (15), described clamping plate (15) is connected with steel rope assembling (14).
4. pantograph as claimed in claim 3, it is characterized in that, described spring bow-lifting device (5) is assembled (1) with described connecting screw rod with described underframe by described webge piece (18) and is connected, and described spring bow-lifting device (5) is assembled (14) by described steel rope and is connected with the adjustment plate on the lower arm rod (2) of described linkage.
5. pantograph as claimed in claim 4, it is characterized in that, described bow cylinder (8) that falls comprises the cylinder spring being positioned at one end and the cylinder body (24) being positioned at the other end, described cylinder body (24) is assembled (1) and is connected with described underframe, described cylinder spring is connected with the adjustment plate on the lower arm rod (2) of described linkage; When described cylinder body (24) is filled with pressurized air, described cylinder spring is compressed by described cylinder body (24), remove restriction to described lower arm rod (2).
6. pantograph as claimed in claim 5, it is characterized in that, described bow assembling (7) comprises carbon slipper, bow angle and spring case assembling, and described bow assembling (7) is by upper frame (3) upper end thereof of described spring case assembling with described linkage.
7. a rolling stock, the pantograph comprising locomotive body and arrange thereon, it is characterized in that, described pantograph is the pantograph as described in any one of claim 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510716593.6A CN105253025A (en) | 2015-10-29 | 2015-10-29 | Locomotive and pantograph |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510716593.6A CN105253025A (en) | 2015-10-29 | 2015-10-29 | Locomotive and pantograph |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105253025A true CN105253025A (en) | 2016-01-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510716593.6A Pending CN105253025A (en) | 2015-10-29 | 2015-10-29 | Locomotive and pantograph |
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| CN (1) | CN105253025A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105932508A (en) * | 2016-04-27 | 2016-09-07 | 天津金港祺机电设备有限公司 | Port electricity taking device |
| CN106394253A (en) * | 2016-11-22 | 2017-02-15 | 北京中车赛德铁道电气科技有限公司 | Air spring suspension pantograph upper frame structure |
| CN107336608A (en) * | 2016-12-28 | 2017-11-10 | 浙江中车电车有限公司 | A kind of pure electric bus pantagraph current collector and electric car |
| WO2018058799A1 (en) * | 2016-09-29 | 2018-04-05 | 中车株洲电力机车有限公司 | Pantograph |
| CN110549856A (en) * | 2019-09-12 | 2019-12-10 | 西南交通大学 | Pantograph structure |
| CN111674262A (en) * | 2020-06-30 | 2020-09-18 | 成都永贵东洋轨道交通装备有限公司 | Buffering lifting type pantograph |
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| DE10324790A1 (en) * | 2003-04-22 | 2004-12-02 | Schunk Bahntechnik Gmbh, Bergheim | Pantograph for electrically powered vehicles has pneumatic drive to move to and from the drive wire and a further lifting drive |
| CN201338541Y (en) * | 2008-12-23 | 2009-11-04 | 北京赛德高科铁道电气科技有限责任公司 | Electric locomotive pantograph |
| CN102935809A (en) * | 2012-11-30 | 2013-02-20 | 南车株洲电力机车有限公司 | Pantograph |
| CN103935250A (en) * | 2014-05-06 | 2014-07-23 | 南车株洲电力机车有限公司 | Device and method for detecting ascending-descending positions of pantograph |
| CN204340711U (en) * | 2014-11-04 | 2015-05-20 | 南车株洲电力机车有限公司 | A kind of pantograph cylinder driver |
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| DE10324790A1 (en) * | 2003-04-22 | 2004-12-02 | Schunk Bahntechnik Gmbh, Bergheim | Pantograph for electrically powered vehicles has pneumatic drive to move to and from the drive wire and a further lifting drive |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105932508A (en) * | 2016-04-27 | 2016-09-07 | 天津金港祺机电设备有限公司 | Port electricity taking device |
| WO2018058799A1 (en) * | 2016-09-29 | 2018-04-05 | 中车株洲电力机车有限公司 | Pantograph |
| RU2712405C1 (en) * | 2016-09-29 | 2020-01-28 | СиАрАрСи ЧЖУЧЖОУ ЛОКОМОУТИВ КО., ЛТД. | Pantograph |
| CN106394253A (en) * | 2016-11-22 | 2017-02-15 | 北京中车赛德铁道电气科技有限公司 | Air spring suspension pantograph upper frame structure |
| CN107336608A (en) * | 2016-12-28 | 2017-11-10 | 浙江中车电车有限公司 | A kind of pure electric bus pantagraph current collector and electric car |
| CN110549856A (en) * | 2019-09-12 | 2019-12-10 | 西南交通大学 | Pantograph structure |
| CN111674262A (en) * | 2020-06-30 | 2020-09-18 | 成都永贵东洋轨道交通装备有限公司 | Buffering lifting type pantograph |
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Application publication date: 20160120 |