• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A track changeable pantograph and an electric vehicle. The track changeable current collector comprises a four-limbed mechanism and a power take-off head (5). The four-link mechanism comprises a base (1), an upper bar (2), a lower bar (3) and a drawbar (4). The power take-off head (5) is arranged at an extension end of the upper rod (2). The drawbar (4) is an elastic drawbar. The four-link mechanism drives the power take-off head (5) to perform a vertical lift stroke and a transverse travel stroke. During the vertical lifting stroke, the elastic drawbar is held at a fixed length. During the transverse movement stroke, the elastic drawbar telescopes. A power take-off portion of the power take-off head (5) is located in a transverse direction of movement on its outside. The pantograph allows a relatively large parking position deviation to facilitate the vehicle operation, and yet can guarantee a stable power take-off if a vehicle body rocks.
    公开号:AT520871A2
    申请号:T9491/2015
    申请日:2015-11-26
    公开日:2019-08-15
    发明作者:Suo Jianguo；Zhang Haifeng；Lin Ping；Yang Yingyu；Zhang Yanlin；Yang Ying；Li Jun；Feng Ye；Chen Minjian；Sun Ning
    申请人:Crrc Zhuzhou Locomotive Co Ltd；
    IPC主号:
    专利说明:

    This application claims priority to Chinese Patent Application No. 201510332298.0 entitled "TRACK-VARIABLE CURRENT COLLECTOR AND ELECTRIC VEHICLE" filed on Jun. 16, 2015 with the Chinese Intellectual Property Office, hereby incorporated herein by reference in its entirety is recorded.
    TECHNICAL AREA
    The present application relates to the technical field of current collection in rapid charging, and more particularly relates to a current collector for a supercapacitor of a fast-charging electric vehicle, such as an energy-saving electric bus. The present application further relates to an electric vehicle having the pantograph.
    BACKGROUND
    With the advancing development of society, development concepts for urban rail transport such as energy saving and environmental protection are also increasingly being improved, and energy-storing electric buses are being developed. In a so-called energy-storing electric bus, a supercapacitor is used to store electric power as power for propulsion; a roof pantograph is used for power take-off and power feedback; the charging process is completed quickly within tenths of a second while the passengers board the bus at the stop; and a single charge can ensure that the energy-saving electric bus can travel to the next stop for charging. Due to the above characteristics, these types of vehicles are widely promoted and used.
    We turn to Figures 1 and 2. Fig. 1 is a schematic view showing the structure of a current collector of a charging system of a conventional energy-storing electric bus; and FIG. 2 is a side view of FIG. 1.
    As shown in the figures, an overall mechanism of the current collector of the charging system of the conventional energy-storing electric bus can be thought of as a four-link linkage mechanism mounted along a longitudinal direction of the bus, and a power supply rail 1 'is directly above a current collector 2' (or pantograph ) assembled. Since all the bars in the four-link linkage mechanism have an unchanged length and the lengths of the bars are set according to certain proportions, a current collecting head 3 'of the current collector 2' can be raised or lowered approximately vertically under the action of a spring or a driving force of a cylinder and in contact come with the power rail 11 directly above the current collector 2 'after it has been raised vertically to a certain height to accomplish the decrease in power for the bus.
    This pantograph has substantially the same operational principle as a roof-mounted pantograph (or pantograph) of other types of rail transport vehicles and railless transport vehicles and the like and is more applicable to a rail transport vehicle. In the case that this pantograph is applied to railless transport vehicles, for example an energy-storing bus, the following disadvantages arise.
    First, a modern energy-storing bus travels on conventional rubber wheels and operates without a rail guide, so that a driver or operator can stop the vehicle with a significant deviation. However, the maximum transverse deviation in the parking position, which can be tolerated by the pantograph described above, is just about 200 mm, which is why high demands are made on the skill of the driver or operator. In addition, each charging high demands on the parking position and a parking angle of the vehicle when the vehicle turns into the holding bay. Therefore, it is difficult to meet the requirements imposed by the practical use, which is detrimental to the ease of operation of the vehicle and also leads to instability of the charging of the vehicle.
    Secondly, because power is supplied to the vehicle in such a manner that the pantograph is raised to contact the power rail directly above the pantograph to be charged when the vehicle is in service
    Retracting berth, the vehicle body may rock when passengers get in and out, and rocking the vehicle body may cause the pantograph mounted on the roof of the vehicle to rock, causing the power take off head on the power rail to swing to the right and left can, so that the contact resistance increases and a Stromabnahmeproblem can occur.
    Third, to ensure that the power take-off head can come into contact with the power rail after it has been lifted, the power take-off head is generally laid out in the form of a long slide plate and an over-length power take-off head can result in an unstable structure.
    Fourth, when the pantograph is lowered, it can occupy much space above the vehicle and can even extend beyond the width of the vehicle body.
    Therefore, a technical problem to be solved by those skilled in the art is to increase the allowable parking position deviation of the pantograph in order to facilitate the operation of the vehicle and increase the stability of the power take-off.
    BRIEF SUMMARY OF THE INVENTION
    An object of the present application is to provide a track changeable current collector. The pantograph allows a large parking position deviation, facilitates the operation of a vehicle and can ensure a stable power take-off even when a vehicle body rocks. In addition, the pantograph has advantages such as a stable structure and small footprint.
    Another object of the present application is to provide an electric vehicle equipped with the track-changing pantograph.
    In order to accomplish the first of the objects described above, a track-type pantograph according to the present application is provided. The track changeable pantograph includes a four-link linkage mechanism and a power take-off head. The four-link linkage mechanism includes a base, an upper pole, a lower pole and a tie rod, and the current collection head is located at an outwardly extending end of the upper pole, and the tie rod is an elastic tie rod. The four-link linkage mechanism is configured to drive the power take-off head to make a vertical lift stroke and a lateral travel lift. The elastic tie rod is held at an unchanged length during the vertical lift stroke, and the elastic tie rod is configured to be pushed out or retracted during the lateral movement stroke, and a current take-off portion of the power take-off head is located in a lateral movement direction on an outer side of the current collection head.
    Preferably, a rod body of the elastic tie rod is provided in a longitudinal direction with an elastic telescopic portion, and the elastic telescopic portion is formed by a spring.
    Preferably, the elastic drawbar includes a lower drawbar and a spring connected together, and the spring is at an upper end and the lower drawbar is at a lower end.
    Preferably, the elastic drawbar includes an upper drawbar and a spring connected together, and the upper drawbar is at an upper end and the spring is at a lower end.
    Preferably, the elastic tie rod includes two tie rods and a spring connected together and the two tie rods are at two ends and the spring is in the middle.
    Preferably, the elastic drawbar includes two springs and a drawbar connected together, and the two springs are at two ends and the drawbar is in the middle.
    Preferably, the elastic tie rod includes a plurality of springs and a plurality of tie rods, which are alternately connected to each other.
    Preferably, the elastic drawbar includes two rod sections that mate with one another via a telescopic structure, and a spring is located between the two rod sections.
    Preferably, the power take-off head is provided with a plurality of electrodes, and the plurality of electrodes are distributed in parallel and at intervals in an up-and-down direction on an outer side of the power take-off head.
    Preferably, the power take-off head is mounted to the upper rod by a universal bearing, and a friction reducing roller is disposed on the power take-off head.
    In order to achieve the other object, an electric vehicle according to the present application is provided. The electric vehicle includes a vehicle body, an electric power drive system, and a charging system. The charging system is provided with a current collector, which is the track changeable current collector according to one of the above-mentioned aspects. The track changeable current collector is mounted on a vehicle roof and perpendicular to a longitudinal direction of the vehicle body.
    In the present application, the pull rod in the pantograph linkage mechanism of the pantograph is constructed into the elastic tie rod, and the pantograph part of the pantograph head is constructed to be on the outside, thereby forming a side pantograph which conducts current in a lateral direction can lose weight. During operation, the power rail is mounted in the lateral direction of the pantograph. In the case of length changes of the drawbar during the movement, the movement of the current collecting head is decomposed into a track variable motion containing a vertical movement and a lateral movement. The power take-off head is first raised vertically to a certain height (higher than 1500 mm), and then the power take-off head can move further outward and horizontally by a certain distance (more than 600 mm), in cooperation with a vertical degree of freedom limiting mechanism the power take-off head comes in contact with the power rail to a
    To realize current collection. During the process in which the power take-off head is lifted vertically, the pull rod is kept at an unchanged length. The pull rod may extend approximately linearly during horizontal movement of the power take off head. Since the current collecting head of the pantograph functions to move horizontally a long distance, the allowable maximum parking position deviation can be increased, which facilitates the operation of the vehicle and improves the stability of the power take-off, and in particular enables the current collector for a modern energy-storing electric bus to use.
    The electric vehicle according to the present application is provided with the track changeable current collector described above. Since the track-changing pantograph realizes the technical benefits described above, corresponding technical benefits are realized in the electric vehicle provided with the track-changing pantograph.
    BRIEF DESCRIPTION OF THE DRAWINGS
    Fig. 1 is a schematic view showing the structure of a current collector of a charging system of a conventional energy-storing electric bus;
    FIG. 2 is a side view of the current collector in FIG. 1;
    FIG. 3 is a schematic structural view of an embodiment of a track-type current collector according to the present application;
    Figure 4 is a schematic view showing the vertical and lateral movement of the track changeable current collector shown in Figure 3; and Figure 5 is a schematic view showing the lowering of the track changeable current collector shown in Figure 3.
    Reference numbers in Figure 1 and Figure 2: 1 '. Power supply rail, 2 '. Pantograph, 3 '. Power purchase head. Reference numerals in Figures 3 to 5: 1st base, 2nd upper rod, 3rd lower rod, 4th tie rod, 4-1. lower drawbar, 4-2. Spring, 5, power take-off head, 6. Power supply rail, 7. Guide plate.
    DETAILED DESCRIPTION OF EMBODIMENTS
    In order that those skilled in the art may better understand the solutions of the present application, the present application will be described in more detail below in conjunction with the drawings and embodiments.
    Terms used herein such as "upper," "lower," "inner," and "outer" are defined based on the positional relationships shown in the drawings. According to the drawings, the corresponding positional relationships can be changed accordingly. Therefore, these terms should not be construed as absolute limitations on the scope of the present application.
    Turning to FIG. 3, which is a schematic structural view showing an embodiment of a track-type current collector according to the present application.
    In one embodiment, a lateral pantograph according to the present application primarily comprises a base 1, an upper bar 2, a lower bar 3, a tie rod 4 and a power take-off head 5 and so on. The base 1, the upper rod 2, the lower rod 3 and the tie rod 4 form a four-link linkage mechanism which sets the power take-off head 5 in motion. A lower end of the lower rod 3 is pivoted to the base 1 by a pivot, and an upper end is hinged to the upper rod 2. A lower end of the tie rod 4 is hinged to the base 1, and an upper end is hinged to a crank arm at a rear end of the upper rod 2. The upper bar 2 is constructed as a V-shaped frame structure, with an outwardly extending end narrower and another end wider, for which reason the upper bar 2 is also referred to as an upper frame.
    The tie rod 4 is an elastic tie rod and is formed by a lower tie rod 4-1 and a spring 4-2 which are connected by a butt joint. The spring 4-2 is located at an upper end of the tie rod 4 and is hinged to the upper rod 2. The lower tie rod 4-1 is located at a lower end of the tie rod 4 and is hinged to the base 1. Of course, the position of the bottom
    Pull rod 4-1 and the position of the spring 4-2 alternatively be exchanged according to the requirements, that is, the lower tie rod 4-1 and the spring 4-2 can be mounted the other way round.
    The power take-off head 5 is mounted on the outwardly extending end of the upper rod 2 by means of a universal bearing. A power take-off part of the power take-off head 5 is located in an outer side of the power take-off head 5 in its lateral movement direction. A plurality of power take-off electrodes are distributed in parallel and at intervals in an up-and-down direction on an outer surface of the power take-off head 5. A friction reducing roller is disposed on the power take-off head 5.
    Turning to FIG. 4, which is a schematic view showing the lifting and the lateral movement of the track changeable current collector shown in FIG.
    In practice, a power supply device is mounted on a charging station, which is usually a bus stop. A power supply rail 6 of the power supply device is vertically mounted at a position adjacent to a vehicle and above the vehicle. A plurality of power rails 6 are distributed in parallel and at intervals in an up-down direction. The arrangement of the plurality of power rails 6 corresponds to the arrangement of the electrodes of the power take-off head 5. Each of the power rails 6 is longer than each of the electrodes of the power take-off head 5 so that the power take-off head 5 comes into contact with the power supply rails within a large range in an anterior-posterior direction can when the vehicle turns into the holding bay. Each of the power supply rails 6 may be slightly wider than each of the electrodes of the power take-off head 5 to improve the stability of the power take-off.
    A guide plate 7 (or a guide rail) is horizontally mounted on the power rail 6 and perpendicular to a plane where the power supply rail is located, and the guide plate 7 serves to limit the degree of freedom of the power take-off head 5 in a vertical direction when the power take-off head 5 is raised to a certain height, thereby preventing the power take-off head 5 continues to move upwards, but it can move laterally outwards. More specifically, the guide plate 7 may be embodied as a flat steel plate and the like. The track changeable current collector is mounted on a vehicle roof and perpendicular to a longitudinal direction of a vehicle body. Both a lifting plane of the four-link linkage mechanism of the track-changeable current collector and the lateral direction of movement of the current-collecting head are perpendicular to the longitudinal direction of the vehicle body.
    When the vehicle bends into the support bay and the pantograph head 5 of the pantograph must come into contact with the power rail, a spring and a cylinder cooperate with the base for the purpose of driving the four-link linkage mechanism to rotate the lower rod 3 in a clockwise direction. Since a tensile force at this stage is not sufficient to lengthen the spring 4-2, the length of the tie rod 4 remains unchanged. Under the action of the four-link linkage mechanism, the power take-off head 5 is raised approximately vertically in a vertical plane perpendicular to the longitudinal direction of the vehicle body.
    When the power take-off head 5 is raised to a height of about 1,500 mm, the power take-off head 5 abuts against an underside of the guide plate 7 via the friction reducing roller on the pickup head 5. Under the restriction by the guide plate 7, the pulling force acting on the pull rod 4 gradually becomes increases, whereby the spring 4-2 is linearly elongated, whereby the function of a telescopic pull rod is realized and a structure similar to a crank slider is formed. Thereafter, the power take-off head 5 is prevented by the guide plate 7 from moving up further. The length of the pull rod 4 is automatically changed, and the power take-off head 5 can move laterally outward by 0 to 700 mm in the vertical plane perpendicular to the longitudinal direction of the vehicle body until the power take-off head 5 contacts the power supply rail 6 of the power supply device for the purpose of power take-off comes.
    Turning to FIG. 5, which is a schematic view showing the lowering of the track changeable current collector shown in FIG.
    When the current collector needs to be lowered after completion of the charging operation, the lower rod 3 is rotated counterclockwise to move the power take-off head 5 laterally leftward, thereby gradually shortening the spring 4-2. When the power take-off head 5 is separated from the guide plate 7, the spring 4-2 returns to a normal length. Thereafter, the lower rod 3 further rotates, whereby the four-link linkage mechanism is retracted in a folded state, thus accomplishing the lowering of the current collector.
    The above-described embodiments are merely various preferred embodiments of the present application, and the present application is not particularly limited thereto. Based on the above-described embodiments, a targeted adjustment can be made depending on the practical requirements, whereby other embodiments are obtained. For example, the elastic tie rod is formed by two tie rods and a spring which are butted together by a butt joint, and the two tie rods are at two ends and the spring is in the middle. Alternatively, the elastic tie rod is formed by two springs and a tie rod which are butted together by a butt joint, and the two springs are at two ends and the tie rod is in the middle. Alternatively, the elastic drawbar is formed by a plurality of springs and a plurality of tie rods, which are alternately connected by a butt joint. Furthermore, the elastic tie rod is alternatively formed by two rod sections which cooperate via a telescopic structure, and a spring is located between the two rod sections. Since there are many possible implementations, no further examples are discussed and illustrated here.
    In addition to the above-described track changeable current collector, according to the present application, there is further provided an electric vehicle including a vehicle body, an electric power drive system, and a charging system. The charging system is provided with a current collector and the current collector is the track changeable current collector described above. The current collector is mounted on a vehicle roof perpendicular to the longitudinal direction of the vehicle body. That is, both a plane in which a four-link linkage mechanism of the track-changing pantograph is lifted and a lateral moving direction of a power take-off head are perpendicular to the longitudinal direction of the vehicle body. With regard to the other structures, reference is made to the prior art, which will not be described further in the present text.
    The lane changeable pantograph and the electric vehicle according to the present application have been described above in detail. The principle and the embodiments of the present application have been illustrated herein by means of concrete examples. The above description of examples is merely to aid in understanding the core concept of the present application. It should be noted that some modifications and improvements to the present application may be made by those skilled in the art without departing from the principle of the present application, and these modifications and improvements are also to be understood as falling within the scope of the present application as defined by the claims is defined.
    权利要求:
    Claims (10)
    [1]
    A lane changeable pantograph comprising: a four-link linkage mechanism; and a power take-off head (5), wherein: the four-link linkage mechanism comprises a base (1), an upper pole (2), a lower pole (3), and a tie rod (4), and the current collection head (5) extends outward End of the upper rod (2), and the drawbar (4) is an elastic tie rod, and the four link linkage mechanism is configured to drive the current collection head (5) to perform a vertical lift stroke and a lateral travel stroke; Pulling rod is held during the vertical lifting stroke at an unchanged length, and the elastic tie rod is configured to be pushed out or retracted during the lateral movement stroke, and a current collecting part of the current collecting head (5) in a lateral movement direction on an outer side of the current collecting head (5 ) is located.
    [2]
    The toe changeable current collector according to claim 1, wherein a rod body of the elastic tie rod is provided in a longitudinal direction with an elastic telescopic portion and the elastic telescopic portion is formed by a spring.
    [3]
    A toe changeable current collector according to claim 2, wherein the elastic tie rod comprises a lower pull rod (4-1) and a spring (4-2) connected together, and the spring (4-2) is at an upper end and the lower pull rod (4-1) is at a lower end.
    [4]
    4. A variable current collector according to claim 2, wherein the elastic tie rod comprises an upper tie rod and a spring, which are interconnected, and the upper tie rod is located at an upper end and the spring is at a lower end.
    [5]
    The toe changeable pantograph according to claim 2, wherein said elastic tie rod comprises two tie rods and a spring connected together, and said two tie rods are at two ends and said spring is in the middle.
    [6]
    A toe changeable current collector according to claim 2, wherein the elastic tie rod comprises two springs and a tie rod which are connected to each other, and the two springs are located at two ends and the tie rod is in the middle.
    [7]
    7. A variable current collector according to claim 2, wherein the elastic tie rod comprises a plurality of springs and a plurality of tie rods, which are alternately connected to each other.
    [8]
    The toe changeable current collector according to claim 2, wherein the elastic tie rod comprises two rod sections which cooperate via a telescopic structure and a spring is located between the two rod sections.
    [9]
    The toe changeable current collector according to any one of claims 1 to 8, wherein the current collecting head (5) is provided with a plurality of electrodes, and the plurality of electrodes are distributed in parallel and at intervals in an up-and-down direction on an outer side of the current collecting head (5).
    [10]
    An electric vehicle, comprising: a vehicle body; an electric power drive system; and a charging system equipped with a pantograph, wherein: the pantograph is the crawler according to any one of claims 1 to 9, and the catenary pantograph is mounted on a vehicle roof and perpendicular to a longitudinal direction of the vehicle body.
    类似技术:
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
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    CN101580024B|2009-06-18|2011-06-01|上海交通大学|Station charging type public transportation trolley bus system receiving power in transverse and lateral direction|
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    CN104185567B|2012-02-22|2016-09-28|株式会社日立电力解决方案|Stringing formula truck|
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    CN103358916B|2013-08-01|2015-07-29|南车株洲电力机车有限公司|A kind of elec. vehicle and current-collecting device thereof|
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    CN204055406U|2014-03-04|2014-12-31|天津市众益弹簧减震器有限公司|A kind of trackless trolley car collector bow with spring|
    CN104890520B|2015-06-16|2018-02-23|中车株洲电力机车有限公司|A kind of lateral current collector and electric vehicle|
    CN104859456B|2015-06-16|2017-08-18|南车株洲电力机车有限公司|One kind becomes track pantagraph current collector and electric vehicle|CN104890520B|2015-06-16|2018-02-23|中车株洲电力机车有限公司|A kind of lateral current collector and electric vehicle|
    CN104901382B|2015-06-16|2018-08-03|中车株洲电力机车有限公司|A kind of charging system|
    CN104859456B|2015-06-16|2017-08-18|南车株洲电力机车有限公司|One kind becomes track pantagraph current collector and electric vehicle|
    CN107054098A|2017-06-06|2017-08-18|中车株洲电力机车有限公司|A kind of pantagraph current collector lowering or hoisting gear|
    CN109693584B|2017-10-23|2020-11-13|华庚新材料科技有限公司|Method for judging and correcting deviation of advancing track of intelligent trolley bus|
    CN112060917B|2020-09-17|2021-09-14|中车青岛四方车辆研究所有限公司|Current collector and rail vehicle|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CN201510332298.0A|CN104859456B|2015-06-16|2015-06-16|One kind becomes track pantagraph current collector and electric vehicle|
    PCT/CN2015/095656|WO2016201900A1|2015-06-16|2015-11-26|Track-variable current collector and electric vehicle|
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