WO2022042675A1 - 一种汇流排膨胀接头 - Google Patents

一种汇流排膨胀接头 Download PDF

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Publication number
WO2022042675A1
WO2022042675A1 PCT/CN2021/114924 CN2021114924W WO2022042675A1 WO 2022042675 A1 WO2022042675 A1 WO 2022042675A1 CN 2021114924 W CN2021114924 W CN 2021114924W WO 2022042675 A1 WO2022042675 A1 WO 2022042675A1
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WO
WIPO (PCT)
Prior art keywords
conductive
expansion joint
guide
plates
busbar
Prior art date
Application number
PCT/CN2021/114924
Other languages
English (en)
French (fr)
Inventor
B·富雷尔
林锡荣
王北维
Original Assignee
富雷尔福莱电气化设备(广州)有限公司
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.)
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Publication of WO2022042675A1 publication Critical patent/WO2022042675A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
    • B60M1/00—Power supply lines for contact with collector on vehicle
    • B60M1/12—Trolley lines; Accessories therefor
    • B60M1/20—Arrangements for supporting or suspending trolley wires, e.g. from buildings
    • B60M1/24—Clamps; Splicers; Anchor tips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
    • B60M1/00—Power supply lines for contact with collector on vehicle
    • B60M1/12—Trolley lines; Accessories therefor
    • B60M1/26—Compensation means for variation in length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
    • B60M1/00—Power supply lines for contact with collector on vehicle
    • B60M1/30—Power rails
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
    • B60M1/00—Power supply lines for contact with collector on vehicle
    • B60M1/30—Power rails
    • B60M1/305—Joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
    • B60M1/00—Power supply lines for contact with collector on vehicle
    • B60M1/30—Power rails
    • B60M1/307—Supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2200/00—Type of vehicles
    • B60L2200/26—Rail vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/30—Railway vehicles

Definitions

  • the invention belongs to the technical field of rail transit traction power supply catenary, in particular to a busbar expansion joint.
  • the expansion joint of the busbar is connected in series between the busbars of the two anchor sections, as a mechanical compensation and electrical connection device for the length change of the busbar due to thermal expansion and contraction.
  • the gap changes of the busbars at both ends are compensated and adjusted, and its electrical and mechanical properties need to ensure the seamless and smooth passage of the pantograph, and meet the overall indicators of the system.
  • the expansion joint should present a through-integration structure, and the intermediate joint connecting parts should be avoided as far as possible at both ends connected to the bus bar, so that the installation link of the intermediate joint can be reduced, and the field installation efficiency of the expansion joint can be improved.
  • the technical problem solved by the present invention is to provide a busbar expansion joint with uniform mass distribution, which can effectively compensate the mechanical gap caused by the thermal expansion and contraction of the busbar, and realize the smooth transition and continuity when the pantograph passes through. Take the current to ensure that the pantograph-catenary dynamic performance meets the requirements of the pantograph-catenary current-receiving standard.
  • a busbar expansion joint is installed between two busbars arranged in parallel along the longitudinal direction of the line and at a fixed interval, and has two guide plates and an electrical connection device; the inner side of each guide plate is provided with For the chute extending to both ends, the inner sides of the two deflectors are opposite to each other and are arranged side by side at intervals, and a relatively slidable engaging structure is formed between the two by the guide blocks embedded in the chute; It is located at both ends of the engaging structure and is fixedly connected to different guide plates respectively; the electrical connection device is arranged on the top or side of the engaging structure and electrically connects the two guide plates.
  • the two baffles are a left baffle and a right baffle, each baffle includes a first end and a second end opposite, the first end of the left baffle
  • the side busbar is fixedly connected, and the first end of the right guide plate is fixedly connected with the right busbar;
  • the guide block includes a left guide block and a right guide block, and the left guide block is connected to the
  • the second end of the left guide plate is fixedly connected, and is slidably connected with the right guide plate;
  • the right guide block is fixedly connected with the second end of the right guide plate, and is connected with the left guide plate Flow plate slide connection.
  • the electrical connection device may have two first conductive support bases, two second conductive support bases and two conductive rods; each guide plate is fixedly connected to a first conductive support base and a second conductive support base, The first conductive support seat and the second conductive support seat fixed on the same deflector are electrically connected through the conductive rod; the conductive rod is located at the top or side of the deflector, and slides relatively on the two deflectors Or keep the electrical connection between the two conductive rods at rest.
  • each first conductive support base is provided with a first fixing sleeve
  • each second conductive support seat is provided with a second fixed sleeve hole
  • each second conductive support seat also has a sliding sleeve seat extending toward the upper surface of the opposite side guide plate, and the lower end surface of the sliding sleeve seat
  • the sliding sleeve is provided with a guide hole
  • the two conductive rods are respectively arranged on the first conductive support seat and the second conductive support on the same side deflector Between the seats, the two ends of each conductive rod are fixedly sleeved between the first fixing sleeve hole and the second fixing
  • the electrical connection device may have two upper conductive plates, two soft connection devices and two lower conductive plates, each of which is fixedly connected to an upper conductive plate and a lower conductive plate; each of the upper conductive plates Both correspond to one lower conductive plate and are electrically connected through the soft connection device, and the electrically connected upper conductive plate and the lower conductive plate are fixed on different current guiding plates.
  • the two upper conductive plates are L-shaped including a horizontal arm and a vertical arm, the two upper conductive plates are respectively buckled on the top of the engaging structure, and the vertical arms of the two upper conductive plates are symmetrical It is fixed on the outer surfaces of the two guide plates near the ends; the two lower conductive plates are also L-shaped, and the two lower conductive plates are symmetrically fixed on the outer surfaces of the middle of the two guide plates; One ends of the two soft connection devices are respectively electrically connected to the horizontal arms of the two upper conductive plates, and the other ends are respectively electrically connected to the lower conductive plates fixed on the opposite side guide plates; A support plate supporting the flexible connection device is connected to one end of the flexible connection device.
  • the flexible connection device includes a casing sleeved outside and can be bent and deformed accordingly; the length of the support plate is greater than or equal to half the length of the flexible connection device, and its width is greater than or equal to the width of the flexible connection device.
  • each guide plate connected with the bus bar is provided with an end head extending along the line, the end head is embedded in the inner cavity of the connected bus bar, and each of the end heads is integrally squeezed with the guide plate respectively. Press molding.
  • Conductive strips are respectively connected to the outer side of each of the guide plates and the bus bars through fasteners, and the conductive strips are respectively electrically connected to the contact guide plates and the bus bars.
  • the lower surface of the chute is provided with a plurality of grooves which are recessed downward.
  • the guide block can be an elongated structure with an H-shaped or C-shaped cross section.
  • a set of contact wire clamps is connected to the lower part of the outer side surface of the two guide plates through fasteners, and the contact wire clamps located at the most end farthest from the side busbars are distributed in an upturned shape.
  • the lower parts of the outer side surfaces of the two guide plates are connected with a strip-shaped integral contact wire splint by means of fasteners, and the strip-shaped integral contact wire splint located at the extreme end away from the side bus bar is distributed upwardly.
  • the first fixing sleeve hole and the second fixing sleeve hole are both embedded with conductive elements sleeved outside the conductive rod, and the conductive rod is a hollow conductive rod or a solid conductive rod.
  • the guide hole is embedded with an elastic conductive element and a bearing sleeved outside the conductive rod, and both ends of the guide hole are provided with a sealing ring sleeved outside the conductive rod; the lower part of the sliding sleeve seat A sliding gasket is embedded on the end face.
  • the left and right deflectors are directly connected to the busbars of the adjacent anchor sections, and the contact wires are extended into the deflector contact wire splint for locking and fixing, without adding additional auxiliary wires; the contact wires at the bottom of the two deflectors form together
  • the current taking surface is composed of two contact lines, and the contact line gap is about 26mm, which ensures a smooth transition when the pantograph passes through, and thus achieves a good current taking effect.
  • a group of block-shaped single contact wire clips or strip-shaped integral contact wire clips are arranged at the bottom of the deflector, and the most terminal contact wire clips are designed to be upturned, so that there is no need to pre-adjust the busbars. Reserving the end of the contact wire for grinding can avoid the impact of the pantograph when it passes, so as to avoid the risk of impact, collision and arcing when the pantograph passes.
  • the end of the deflector and the deflector are integrally extruded, which makes the structure stronger and more reliable, and can improve the efficiency of on-site installation; It can be maintenance-free for a long time and at the same time improve the service life of the equipment.
  • the left and right deflectors are connected by H-type guide blocks with self-lubricating properties, and form a slidable engagement structure with each other.
  • the structure design of this expansion joint can greatly improve the Reduce the initial sliding force of the expansion joint to ensure that the bus bars at both ends will not be blocked or twisted during the process of thermal expansion and cold contraction;
  • the impurities inside are discharged through the grooves to avoid jamming when sliding.
  • the conductive rod-type electrical connection device is provided with elastic conductive elements and bearings with self-lubricating properties to ensure good electrical contact performance between it and the conductive rod, and with the structure of the guide plate, a sliding sleeve and fixed
  • the combined structure of the casing ensures the overall sliding performance of the expansion joint during expansion or contraction.
  • the busbar expansion joint of the present invention has a compact overall structure, is easy to install, and has relatively small mass and uniform distribution, ensuring that the pantograph can maintain good dynamic performance when passing through.
  • FIG. 1 is a schematic three-dimensional structural diagram of the first embodiment of the expansion joint of the present invention after being connected to a busbar.
  • FIG. 2 is a schematic front view of the structure shown in FIG. 1 .
  • FIG. 3 is a schematic structural diagram of the guide slider in the first embodiment of the present invention.
  • FIG. 4 is a schematic three-dimensional structural diagram of the first embodiment of the present invention, which is not connected to the bus bar.
  • FIG. 5 is a schematic three-dimensional structural diagram of the connection between the left guide plate and the bus bar in the first embodiment of the present invention.
  • FIG. 6-8 are a schematic diagram of a front structure, a schematic diagram of a side structure, and a schematic diagram of a top structure of the structure shown in FIG. 5, respectively.
  • FIG. 9 is a schematic three-dimensional structural diagram of the second conductive support seat in the first embodiment of the present invention.
  • 10-12 are a schematic view of a front structure, a schematic cross-sectional structure, and a schematic view of the bottom three-dimensional structure of the structure shown in FIG. 9 .
  • FIG. 13 is a schematic structural diagram of a sliding gasket embedded in the lower end surface of the sliding sleeve seat according to the first embodiment of the present invention.
  • FIG. 14 is a schematic three-dimensional structure diagram of the structure shown in FIG. 13 combined with the structure shown in FIG. 12 .
  • 15A-15C are schematic diagrams showing the range of the expansion amount of the first embodiment of the expansion joint of the present invention.
  • 16 is a schematic structural diagram of the connection between the single-sided baffle and the bus bar of the second embodiment of the expansion joint of the present invention.
  • Figures 17-18 are a schematic diagram of a top surface structure and a schematic diagram of a three-dimensional structure of the third embodiment of the expansion joint of the present invention.
  • 19A-19C are schematic diagrams showing the range of the expansion amount of the third embodiment of the expansion joint of the present invention.
  • FIG. 1 to FIG. 2 are schematic diagrams of the structure of an embodiment of the busbar expansion joint of the present invention connected to the busbar.
  • the expansion joint mainly includes a baffle plate and an electrical connection device 4 .
  • the deflector is divided into a left deflector 1 and a right deflector 2 which have the same structure and are arranged side by side and spaced side by side with opposite inner sides.
  • the left deflector 1 includes a first end 11 and a second end 12 opposite.
  • the first end 11 of the left baffle 1 is fixedly connected to the left bus bar 10; the right baffle 2 also includes an opposite first end 21 and a second end 22.
  • One end 21 is fixedly connected to the right bus bar 20; the inner sides of the left deflector 1 and the right deflector 2 are both provided with two (single or multiple) chutes extending to both ends. 30.
  • the sliding grooves of the two together form the guiding groove of the overall deflector.
  • the left-side guide plate 1 and the right-side guide plate 2 in this embodiment form an engaging structure 100 through the guide block 3 embedded in the chute 30 , and the electrical connection device 4 can be arranged in this The top or side of the engaging structure 100 .
  • the guide block 3 includes two left guide blocks 31 and two right guide blocks 32.
  • the guide block 31 is fixedly connected with the second end 12 of the left guide plate, and is slidably connected with the right guide plate 2;
  • the right guide block 32 is fixedly connected with the second end 22 of the right guide plate, and is connected with the right guide block 2
  • the left deflector 1 is slidably connected.
  • a relatively slidable engaging structure 100 can be formed between the guide block 3 , the left guide plate 1 and the right guide plate 2 .
  • the guide block 3 can be designed as a long strip structure with an H-shaped cross-section, and the longitudinal cross-sectional shape of the guide groove of the overall deflector can be designed as a matching H-shape, so that the The relative sliding between the left air deflector 1 and the right air deflector 2 in the opposite or opposite directions is smoother.
  • the shape of the guide block includes, but is not limited to, the elongated structure with an H-shaped cross-section described in this embodiment, and any other shape (such as a C-shaped elongated structure in the cross-section) can also be used, and only It only needs to be able to form a relatively slidable engaging structure with two deflectors.
  • the guide block can also be made of an insulating material with self-lubricating properties, so as to further increase the relative sliding performance between the two side guide plates.
  • the first end 11 of the left deflector 1 is also provided with a left end 13 extending along the line.
  • the end can be integrally extruded with the left deflector 1.
  • the left end 13 is embedded in the inner cavity of the left bus bar 10;
  • the first end 21 of the right deflector is provided with a right end 23 extending along the line, and the end can also It is integrally extruded and formed, and the right end 23 is embedded in the inner cavity of the right bus bar 20, so that the two side guide plates are respectively fixedly connected to the two ends of the bus bar.
  • the lower surface of the chute 30 is provided with a plurality of grooves 33 that are recessed to the lower part, for discharging the impurities in the chute 30 through these grooves 33 to avoid jamming during sliding.
  • a left conductive strip 14 (such as a copper alloy conductive strip) is fixed on the upper surface by a fastener (such as a bolt), and the left conductive strip 14 is electrically connected to the left guide plate 1 and the left bus bar 10 .
  • a right conductive strip 24 (such as a copper alloy conductive strip) is fixed on the outer surface of the connection between the first end 21 of the right deflector 2 and the right bus bar 10 by means of fasteners (such as bolts). , the right conductive strip 24 is electrically connected to the right guide plate 2 and the right bus bar 20 .
  • the electrical connection device 4 in this embodiment mainly has two first conductive support bases 41 , two second conductive support bases 42 , and two conductive rods 43 , wherein each guide plate is fixedly connected to a first conductive support base 41 and a second conductive support seat 42, the first conductive support seat 41 and the second conductive support seat 42 fixed on the same deflector are electrically connected through a conductive rod 43; the conductive rod 43 can be located on the top of the deflector or At the side, and when the two guide plates slide relative to each other or are stationary, the two conductive rods 43 are always electrically connected.
  • the two first conductive support bases 41 in this embodiment are respectively fixed on the first end 11 of the left air guide plate 1 and the right air guide plate 2 .
  • two second conductive support bases 42 are respectively fixedly arranged between the second end 12 of the left side guide plate 1 and the upper end surface of the second end 22 of the right side guide plate 2 superior.
  • each first conductive support base 41 is provided with a first fixing sleeve hole A
  • each second conductive support base 42 is provided with a second fixed sleeve hole B
  • each second conductive support base 42 also has a A guide hole C is provided on the sliding sleeve seat 420 extending toward the upper surface of the opposite side guide plate.
  • the lower end surface 421 of the sliding sleeve 420 is not in contact with the upper end surface of the opposite side deflector, but a certain gap distance is reserved to avoid affecting the relative sliding of the two side deflectors.
  • the two conductive rods 43 are respectively disposed between the first conductive support base 41 and the second conductive support base 42 on the same side guide plate, and both ends of each conductive rod 43 are fixedly sleeved on the same side guide plate.
  • the fixing sleeve hole A, the second fixing sleeve hole B and the guide hole C conduct electricity.
  • the conductive rods are respectively arranged on the top of the deflector. Of course, they can also be arranged on the side of the deflector by other electrical connection methods, and the conductive rods can be hollow conductive rods or solid conductive rods.
  • the guide hole C provided on the sliding sleeve 420 is provided with a slot into which the elastic conductive element 52 and the bearing 53 can be embedded, so that the elastic conductive element 52 (such as two spring contact fingers) It is embedded in it and sleeved outside the conductive rod 43 to enhance the electrical conductivity between the sliding sleeve 420 and the conductive rod 43; 2 sliding bearings (which can be made of materials with self-lubricating properties) are embedded in it and sleeved on the conductive rod.
  • Outer 43 to enhance the sliding performance between the sliding sleeve and the conductive rod.
  • two ends of the guide hole C can also be provided with sealing rings 54 sleeved outside the conductive rod 43 to prevent the entry of dust and the outflow of conductive grease.
  • a conductive element 51 (such as two strap contacts) can be embedded in the first fixing sleeve hole A and the second fixing sleeve hole B, which is sleeved outside the conductive rod 43 , so as to The electrical conductivity between the first conductive support seat, the second conductive support seat and the conductive rod is enhanced.
  • the lower end surface 421 of the sliding sleeve 420 can be provided with a sliding groove 423 for embedding the sliding gasket 422, and the sliding gasket is made of insulating material,
  • the lower bottom surface is convex and can be in contact with the guide plate corresponding to the lower bottom surface, so as to enhance the sliding performance between the guide plate and the sliding sleeve.
  • a set of uniformly distributed sets of fasteners (such as bolts) are provided on the lower outer sides of the left deflector 1 and the right deflector 2 through fasteners (such as bolts).
  • contact wire clamp 6 so that a group of evenly distributed contact wire clamps are formed between the contact wire clamp 6 and the lower part of the outer side of the connected side deflector, which are used to clamp the left reserved contact wires 15 and the right side of the bus bars at both ends.
  • Contact lines 25 are reserved on the side.
  • the contact wire clamps 60 located at the second end 12 of the left deflector 1 and the second end 22 of the right deflector 2 need to be distributed upwardly at a certain angle, preferably 45 degrees upturned distribution. Therefore, the ends of the reserved contact wires 15 and 25 of the bus bar are raised and fixed, so as to avoid the impact when the pantograph passes through.
  • the horizontal distance between the reserved contact lines of the bus bars at both ends can be maintained at about 26mm, so that the gap between the transition sections of the contact lines of the adjacent anchor sections is small, thereby ensuring good transition conductivity.
  • the contact wire clamp in the expansion joint of the present invention can use not only the single contact wire clamp in the first embodiment above, but also the strip-shaped integral contact wire as shown in the second embodiment in FIG. 16 . splint 8. And similar to the design of the contact clamp plate in the first embodiment, the strip-shaped integral contact clamp plate 8 located at the end farthest from the side bus bar 10 is also distributed upturned to avoid shock when the pantograph passes through.
  • the above two embodiments mainly use the left and right guide plates and the guide slider to form a relatively slidable engaging and overlapping structure, and then use the structural design of the conductive support seat and the sliding sleeve seat in the conductive rod type electrical connection device to realize the bus discharge factor.
  • the length compensation of thermal expansion and contraction caused by temperature changes and the electrical connection between the components, the expansion joint structure can achieve an expansion range of ⁇ 500mm (as shown in Figures 15A-15C).
  • the expansion amount range is only an exemplary illustration, and the expansion amount range that can be realized by the expansion joint structure of the present invention is not limited to ⁇ 500mm.
  • the structure of the electrical connection device in the expansion joint of the present invention may also adopt other alternative forms, as shown in Figures 17-18, which are schematic structural diagrams of the third embodiment of the expansion joint of the present invention.
  • the electrical connection device 4 in this embodiment is mainly composed of two upper conductive plates 71 , two soft connections 72 and two lower conductive plates 73 .
  • each guide plate is fixedly connected with an upper conductive plate 71 and a lower conductive plate 73;
  • the conductive plate 71 and the lower conductive plate 73 are fixed on different guide plates, and the flexible connection device can realize electrical connection to the two sides of the guide plates.
  • the two upper conductive plates 71 are L-shaped including a horizontal arm 711 and a vertical arm 712, and the two upper conductive plates 71 are respectively buckled on the top of the engaging structure 100, so that the The horizontal arms 711 are respectively buckled on the top of the deflector; at the same time, the vertical arms 712 of the two upper conductive plates 71 are symmetrically fixed on the outer sides of the two deflectors near the ends.
  • the two lower conductive plates 73 are also L-shaped, one end of the lower conductive plates 73 is fixed on the guide plate, and the two lower conductive plates 73 are symmetrically fixed on the outer surface of the middle of the two guide plates.
  • One end of the two flexible connection devices 72 is electrically connected to the horizontal arms 711 of the two upper conductive plates 71 respectively, and the other ends are respectively electrically connected to the lower conductive plate 73 fixed on the opposite side guide plate.
  • the soft connection device can be in the form of a conventional copper braided belt, and a casing 75 that can be bent and deformed is arranged on the outer surface of the copper braided belt.
  • the extension direction of the bending deformation of the copper braid is limited, so that it extends as far as possible along the line direction parallel to the busbar, so as to avoid the waste of expansion caused by the longitudinal extension perpendicular to the direction of the paper.
  • a support plate 74 for supporting the flexible connection device is connected to the end of the lower conductive plate 73 connected to the flexible connection device 72 .
  • the length of the support plate is greater than or equal to half of the length of the flexible connecting device, and its width is greater than or equal to the width of the flexible connecting device.
  • the flexible connection device can change its bending shape accordingly to maintain the electrical connection between the baffles and the busbars on both sides for compensation.
  • the soft connection device 72 can be in a regular U shape; when the expansion amount is not 0, the soft connection device 72 can be changed into an irregular C-like shape.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Current-Collector Devices For Electrically Propelled Vehicles (AREA)
  • Electric Cable Arrangement Between Relatively Moving Parts (AREA)
  • Linear Motors (AREA)
  • Control Of Vehicles With Linear Motors And Vehicles That Are Magnetically Levitated (AREA)
  • Train Traffic Observation, Control, And Security (AREA)

Abstract

一种汇流排膨胀接头，安装于刚性接触网系统中两段沿线路纵向并按固定间距平行布置的汇流排之间，其具有导流板（1、2）和电连接装置（4）；每个导流板的内侧面均设有向两端延伸的滑槽（30），两个导流板以内侧面相对而并排间隔设置，两者之间通过嵌入滑槽中的导滑块（3）形成可相对滑动的卡合结构（100）；两段汇流排（10、20）分别位于该卡合结构的两端，并分别固定连接在不同导流板（1、2）上；电连接装置（4）设置于卡合结构的顶部或侧面，并将两个导流板电连接。通过采用该膨胀接头结构，可有效地补偿两端汇流排连接处因热胀冷缩产生的机械间隙，能够实现受电弓通过时的平稳过渡与连续取流，并确保弓网动态性能满足弓网受流标准要求。

Description

一种汇流排膨胀接头 技术领域
本发明属于轨道交通牵引供电接触网技术领域，尤其涉及一种汇流排膨胀接头。
背景技术
在轨道交通刚性悬挂供电系统中，汇流排膨胀接头串接在两锚段汇流排之间，作为汇流排因热胀冷缩而产生长度变化的机械补偿、电气续接装置，对因温度变化引起的两端汇流排间隙变化进行补偿调整，其电气和机械性能需要保证受电弓的无缝顺滑且平稳通过，并满足系统的整体指标。
刚性接触网系统在高速运行下，弓网接触面的平整度对弓网关系有着直接的影响，因此刚性接触网对弓网接触平面的要求很高。在刚性接触网区间，受电弓始入膨胀接头两侧本体重叠区域底部时，受电弓容易与另一支接触线出现碰撞，可能导致刮弓情况的发生，进而危及列车行车安全。若膨胀接头相对滑动的起始阻力过大，将会导致膨胀接头本体变形，严重影响膨胀接头在两锚段之间的机械补偿功能。
发明内容
膨胀接头整体质量及分布会影响受电弓通过时的跟随性，整体质量分布均匀将会使受电弓保持良好的动态性能，保证弓网受流安全可靠。在结构方面，膨胀接头应呈现贯通一体式结构，并且在与汇流排连接的两端应尽量避免中间接头连接部件，如此便能够减少中间接头的安装环节，以提高膨胀接头的现场安装效率。
基于上述，本发明所解决的技术问题即在于提供一种质量分布均匀的汇流排膨胀接头，能够有效补偿汇流排因热胀冷缩产生的机械间隙，实现受电弓通过时的平稳过渡与连续取流，确保弓网动态性能满足弓网受流标准要求。
本发明所采用的技术手段如下所述。
一种汇流排膨胀接头，安装于两段沿线路纵向并按固定间距平行布置的汇流排之间，具有两个导流板和电连接装置；所述每个导流板的内侧面均设有向两端延伸的滑槽，两个导流板以内侧面相对而并排间隔设置，两者之间通过嵌入所述滑槽中的导滑块形成可相对滑动的卡合结构；两段汇流排分别位于该卡合结构的两端，并分别固定连接在不同导流板上；所述电连接装置 设置于卡合结构的顶部或侧面，并将两个导流板电连接。
所述两个导流板为左侧导流板和右侧导流板，每个导流板均包含相对的第一端和第二端，所述左侧导流板的第一端与左侧汇流排固定连接，所述右侧导流板的第一端与右侧汇流排固定连接；所述导滑块包含左导滑块和右导滑块，所述左导滑块与所述左侧导流板的第二端固定连接，与所述右侧导流板滑动连接；所述右导滑块与所述右侧导流板的第二端固定连接，与所述左侧导流板滑动连接。
所述电连接装置可具有两个第一导电支撑座、两个第二导电支撑座及两根导电杆；每个导流板均固定连接一第一导电支撑座和一第二导电支撑座，固定于同一导流板上的第一导电支撑座与第二导电支撑座通过所述导电杆电连接；所述导电杆位于导流板的顶部或侧面处，且在两个导流板相对滑动或静止时两根导电杆之间保持电连接。
其中，所述两个第一导电支撑座分别固定设置于所述左侧导流板的第一端和所述右侧导流板的第一端的上端面之上，所述两个第二导电支撑座分别固定设置于所述左侧导流板的第二端和所述右侧导流板的第二端的上端面之上；每个第一导电支撑座上均设有第一固定套孔，每个第二导电支撑座上均设有第二固定套孔，每个第二导电支撑座还具有向对侧导流板上端面延伸的滑动套座，且该滑动套座的下端面与对侧导流板的上端面不接触，所述滑动套座上设有导向孔；所述两根导电杆分别设置于位于同一侧导流板上的第一导电支撑座和第二导电支撑座之间，每根导电杆的两端均固定套设于所在侧导流板上的第一固定套孔与第二固定套孔之间，且中间穿套于所在侧导流板正上方的导向孔，并通过所述第一固定套孔、第二固定套孔及导向孔导电。
所述电连接装置可具有两个上导电板、两个软连接装置及两个下导电板，每个导流板上均固定连接一上导电板和一下导电板；每个所述上导电板均与一个下导电板相互对应通过所述软连接装置电连接，且电连接的上导电板与下导电板固定于不同导流板上。
其中，所述两个上导电板为包括水平臂和竖直臂的L型，两个上导电板分别倒扣于所述卡合结构的顶部之上，两个上导电板的竖直臂对称固定于所述两个导流板靠近末端处的外侧面上；所述两个下导电板也为L型，两个下导电板对称固定于所述两个导流板中部的外侧面上；所述两个软连接装置的一端分别与所述两个上导电板的水平臂电连接，另一端分别与固定于对侧导流板上的下导电板电连接；在所述下导电板与软连接装置相连的一端上 均连接有支撑所述软连接装置的支撑板。
所述软连接装置包括套设于外且可随之弯曲形变的外壳；所述支撑板的长度大于等于所述软连接装置长度的一半，其宽度大于等于所述软连接装置的宽度。
所述每个导流板连接有汇流排的一端均设有沿线路延伸的端头，该端头嵌入所连接的汇流排内腔中，且每个所述端头分别与导流板整体挤压成型。
在所述每个导流板与汇流排相连接处的外侧面通过紧固件分别连接有导电带，该导电带分别与相接触的导流板及汇流排电连接。
优选地，所述滑槽下表面处设有若干向下部凹陷的凹槽。
优选地，所述导滑块可为截面呈H形或C形的长条状结构。
所述两个导流板的外侧面下部均通过紧固件连接有一组接触线夹板，且位于远离该侧汇流排最末端处的接触线夹板呈上翘状分布。
所述两个导流板的外侧面下部均通过紧固件连接有条状整体式接触线夹板，且位于远离该侧汇流排最末端处的条状整体式接触线夹板呈上翘状分布。
所述第一固定套孔和第二固定套孔内均嵌装有套设于所述导电杆外的导电元件，所述导电杆为空心导电杆或实心导电杆。
所述导向孔内嵌装有套设于所述导电杆外的弹性导电元件和轴承，且所述导向孔的两端设有套设于导电杆外的密封圈；所述滑动套座的下端面上嵌装有滑动垫片。
本发明所产生的有益效果如下所述。
1、左、右导流板直接与相邻锚段汇流排连接并将接触线延伸引入导流板接触线夹板进行锁紧固定，无需增加额外的辅助导线；两导流板底部接触线共同构成由两根接触线组成的取流面，并且接触线间隙在26mm左右，确保受电弓经过时平稳过渡，进而达到良好的取流效果。
2、在导流板的底部设置有一组块状的单个式接触线夹或条状的整体式接触线夹板，并将最末端接触线夹设计成上翘状分布，如此无需预先对汇流排的预留接触线端头进行打磨，即可避免受电弓通过时产生冲击，从而规避受电弓经过时出现冲击、碰撞、拉弧的风险。
3、导流板的端头与导流板整体挤压成型，使得结构的强度和可靠性更高，并能够提高现场安装效率；且导电杆式电连接装置的滑动套座整体密封式设计，可以长期免维修，同时提高设备使用寿命。
4、左、右导流板通过具有自润滑性能的H型导滑块连接，且相互之间形成可滑动的卡合结构，此种膨胀接头结构设计与传统膨胀接头相比，可以很大程度减小膨胀接头起始滑移力，确保两端汇流排在热胀冷缩过程中不产生阻滞、扭拧等情形；同时导流板的滑槽内可设置若干凹槽，能够将滑槽内的杂质通过凹槽排出，避免滑动时出现卡滞现象。
5、导电杆式电连接装置内设置有弹性导电元件和具有自润滑性能的轴承，确保其与导电杆之间良好的电接触性能，并配合导流板的结构而设置了滑动套管与固定套管相结合的结构，确保膨胀或收缩时膨胀接头整体的滑动性能。
6、本发明汇流排膨胀接头整体结构紧凑、安装方便自身质量相对较小且分布均匀，确保受电弓经过时能够保持良好的动态性能。
附图说明
图1为本发明膨胀接头第一种实施例与汇流排连接后的立体结构示意图。
图2为图1所示结构的正面结构示意图。
图3为本发明第一种实施例中导滑块的结构示意图。
图4为本发明第一种实施例未与汇流排连接的立体结构示意图。
图5为本发明第一种实施例中左侧导流板与汇流排连接的立体结构示意图。
图6-图8分别为图5所示结构的正面结构示意图、侧面结构示意图及顶面结构示意图。
图9为本发明第一种实施例中第二导电支撑座的立体结构示意图。
图10-图12为图9所示结构的正面结构示意图、剖面结构示意图及底面立体结构示意图。
图13为本发明第一种实施例中嵌装于滑动套座下端面的滑动垫片的结构示意图。
图14为图13所示结构与图12所示结构结合后的立体结构示意图。
图15A-图15C为本发明膨胀接头第一种实施例的膨胀量范围示意图。
图16为本发明膨胀接头第二种实施例的单侧导流板与汇流排连接的结构示意图。
图17-图18为本发明膨胀接头第三种实施例的顶面结构示意图及立体结构示意图。
图19A-图19C为本发明膨胀接头第三种实施例的膨胀量范围示意图。
具体实施方式
请参阅图1-图2所示，本发明汇流排膨胀接头一种实施例与汇流排连接的结构示意图，该膨胀接头主要包含了导流板和电连接装置4。其中导流板分为结构相同且以内侧面相对而并排间隔设置的左侧导流板1和右侧导流板2，左侧导流板1包含相对的第一端11和第二端12，该左侧导流板1的第一端11与左侧汇流排10固定连接；右侧导流板2也包含相对的第一端21和第二端22，该右侧导流板2的第一端21与右侧汇流排20固定连接；左侧导流板1和右侧导流板2的内侧面上均设有两条(也可设置单条或多条)向两端延伸的滑槽30，两者的滑槽共同构成整体导流板的导向槽。
如图2所示，本实施例中的左侧导流板1与右侧导流板2通过嵌入滑槽30中的导滑块3而形成卡合结构100，电连接装置4可设置于该卡合结构100的顶部或是侧面。并请一并参阅图5-图6，对应于上每个导流板上设置的两条滑槽30，导滑块3包含两个左导滑块31和两个右导滑块32，左导滑块31与左侧导流板的第二端12固定连接，与右侧导流板2滑动连接；右导滑块32与所述右侧导流板的第二端22固定连接，与左侧导流板1滑动连接。由此，导滑块3与左侧导流板1、右侧导流板2之间能够形成可相对滑动的卡合结构100。
较优地，如图3所示，导滑块3可以设计成截面为H形的长条状结构，则整体导流板的导向槽纵向截面形状即可设计为与其相匹配的H形，使得左侧导流板1与右侧导流板2之间相向或反向的相对滑动更加地顺畅。应当理解的是，导滑块的形状包括但不仅限于本实施例所述的截面呈H形的长条状结构，也可采用其它任何形状(例如截面呈C形的长条状结构)，只需能够实现与两个导流板组成可相对滑动的卡合结构即可。且，导滑块还可采用具有自润滑性能的绝缘材料来制成，以进一步增加两侧导流板之间的相对滑动性能。
请一并参与图1及图4，左侧导流板1的第一端11还设有沿线路延伸的左侧端头13，该端头可与左侧导流板1整体挤压成型，左侧端头13嵌入左侧汇流排10的内腔中；右侧导流板的第一端21设有沿线路延伸的右侧端头23，该端头也可与右侧导流板2整体挤压成型，右侧端头23嵌入右侧汇流排20的内腔中，从而使得两侧导流板分别与两端汇流排固定连接。同时如图4所示，在滑槽30的下表面处设有若干向下部凹陷的凹槽33，用于将 滑槽30内的杂质通过这些凹槽33排出，避免滑动时出现卡滞现象。
另一方面，为了加强导流板与汇流排之间的电连接，如图2及图4所示，在左侧导流板1的第一端11与左侧汇流排10连接处的外侧面上通过紧固件(如螺栓)固定设置有左侧导电带14(如铜合金导电带)，该左侧导电带14与左侧导流板1及左侧汇流排10电连接。同样地，在右侧导流板2的第一端21与右侧汇流排10连接处的外侧面上通过紧固件(如螺栓)固定设置有右侧导电带24(如铜合金导电带)，该右侧导电带24与右侧导流板2及右侧汇流排20电连接。
本实施例中的电连接装置4主要具有两个第一导电支撑座41、两个第二导电支撑座42、两根导电杆43，其中每个导流板均固定连接一第一导电支撑座41和一第二导电支撑座42，固定于同一导流板上的第一导电支撑座41与第二导电支撑座42又通过导电杆43电连接；导电杆43可位于导流板的顶部或侧面处，且在两个导流板相对滑动或静止时两根导电杆43之间始终保持电连接。
如图1-图2、图4-图8所示，本实施例中的两个第一导电支撑座41分别固定设置于左侧导流板1的第一端11和右侧导流板2的第一端21的上端面之上，两个第二导电支撑座42分别固定设置于左侧导流板1的第二端12和右侧导流板2的第二端22的上端面之上。
其中，每个第一导电支撑座41上均设有第一固定套孔A，每个第二导电支撑座42上均设有第二固定套孔B，每个第二导电支撑座42还具有向对侧导流板上端面延伸的滑动套座420，该滑动套座420上设有导向孔C。且该滑动套座420的下端面421与对侧导流板的上端面不接触，而是保留一定的间隙距离，以避免影响两侧导流板的相对滑动。
本实施例中，两根导电杆43分别设置于位于同一侧导流板上的第一导电支撑座41和第二导电支撑座42之间，每根导电杆43的两端均固定套设于所在侧导流板上的第一固定套孔A与第二固定套孔B之间，且中间穿套于所在侧导流板正上方的导向孔C，并可通过套设于外的第一固定套孔A、第二固定套孔B及导向孔C导电。如图，本实施例中导电杆分别设置于导流板的顶部，当然亦可通过其它电连接方式将其设置于导流板的侧面，且导电杆可为空心导电杆或实心导电杆。
请参阅图9-图11，滑动套座420上设置的导向孔C内设有可嵌装弹性导电元件52和轴承53的卡槽，从而可将弹性导电元件52(如2个弹簧触 指)嵌入其中而套设在导电杆43外，增强滑动套座420与导电杆43之间的导电性能；将2个滑动轴承(可采用具有自润滑性能的材料制备)嵌入其中而套设在导电杆外43，增强滑动套座与导电杆之间的滑动性能。且导向孔C的两端还可设置套设于导电杆43外的密封圈54，以防止灰尘的进入及导电润滑脂的流出。
如图11所示，本实施例中第一固定套孔A和第二固定套孔B内还可嵌装套设于导电杆43外的导电元件51(如2个表带触指)，以增强第一导电支撑座、第二导电支撑座与导电杆之间的导电性能。
再请参阅图12-图14所示，在本实施例中，滑动套座420的下端面421上可设置供滑动垫片422嵌装的滑槽423，该滑动垫片以绝缘材料制成，其下底面成凸起状而可与下底面相对应的导流板相接触，以增强导流板与滑动套管之间的滑动性能。
如图1-图2、图4及图7所示，本实施例中，左侧导流板1和右侧导流板2的外侧下部均通过紧固件(如螺栓)设置有一组均匀分布的接触线夹板6，使得接触线夹板6与所相连侧导流板外侧下部之间形成一组均布的接触线夹，用于夹持两端汇流排的左侧预留接触线15、右侧预留接触线25。
并且如图所示，在位于左侧导流板1的第二端12和右侧导流板2的第二端22处的接触线夹板60需呈以一定角度的上翘状分布，优选为呈45度上翘状分布。从而将汇流排的预留接触线15、25的端头上扬固定，即可避免受电弓通过时产生冲击。同时采用本发明的膨胀接头结构，两端汇流排的预留接触线之间的水平距离可保持在26mm左右，实现相邻锚段接触线过渡段间隙小，从而确保过渡导电性能良好。
另外，本发明膨胀接头中的接触线夹板除了可采用上述第一种实施例中单个式接触线夹外，还可采用如图16的第二种实施例中示出的条状整体式接触线夹板8。且类似于第一种实施例接触线夹板的设计，位于远离该侧汇流排10最末端处的条状整体式接触线夹板8同样呈上翘状分布，以避免受电弓通过时产生冲击。
上述两种实施例主要通过左右导流板与导滑块形成可相对滑动的卡合重叠结构，再利用导电杆式电连接装置中导电支撑座及滑动套座的结构设计，来实现汇流排因温度变化而引起热胀冷缩的长度补偿以及各元件之间的电气连接，该膨胀接头结构可实现的膨胀量范围为±500mm(如图15A-图15C所示)。但本领域技术人员应当理解的是，该膨胀量范围仅为示例性说 明，本发明的膨胀接头结构可实现的膨胀量范围并不仅局限于±500mm。
此外，本发明膨胀接头中的电连接装置结构还可采用其他替代形式，如图17-图18所示，其为本发明膨胀接头第三种实施例的结构示意图。与上述两种实施例不同的是，本实施例中的电连接装置4主要由两个上导电板71、两个软连接72及两个下导电板73组成。其中，每个导流板上均固定连接一上导电板71和一下导电板73；每个上导电板71均与一个下导电板73相互对应通过软连接装置72电连接，且电连接的上导电板71与下导电板73固定于不同导流板上，进而软连接装置可实现对两侧导流板的电连接。
如图所示，本实施例中两个上导电板71为包括水平臂711和竖直臂712的L型，两个上导电板71分别倒扣于卡合结构100的顶部之上，即使得水平臂711分别倒扣于导流板的顶部之上；同时两个上导电板71的竖直臂712对称的固定于两个导流板靠近末端处的外侧面上。两个下导电板73也为L型，下导电板73的一端固定于导流板上，且两个下导电板73对称的固定于两个导流板中部的外侧面上。两个软连接装置72的一端分别与两个上导电板71的水平臂711电连接，另一端分别与固定于对侧导流板上的下导电板73电连接。
其中的软连接装置可以采用常规的铜编织带形式，同时在铜编织带外套设可随之弯曲形变的外壳75，该外壳75即可起到支撑铜编织带的作用，又可在一定程度上限定铜编织带发生弯曲形变的延展方向，使其尽量沿平行于汇流排的线路方向延展，避免出现沿垂直于纸面方向的纵向延展而造成膨胀量的浪费。
另外，考虑到软连接装置(如上述铜编织带形式)的整体质量较大，本实施例在下导电板73与软连接装置72相连的一端上均连接有支撑软连接装置的支撑板74。该支撑板的长度最好大于等于软连接装置长度的一半，其宽度大于等于软连接装置的宽度。
如图19A-图19C所示，在两个导流板发生相对滑动时，软连接装置可随之改变自身的弯曲形状来保持两侧导流板及汇流排的电气连接从而进行补偿。如膨胀量为0时，软连接装置72可呈规则的U形状；膨胀量不为0时，软连接装置72可改变成不规则的类C形状。

Claims (16)

  1. 一种汇流排膨胀接头，安装于两段沿线路纵向并按固定间距平行布置的汇流排之间，其特征在于，具有两个导流板(1、2)和电连接装置(4)；
    所述每个导流板的内侧面均设有向两端延伸的滑槽(30)，两个导流板(1、2)以内侧面相对而并排间隔设置，两者之间通过嵌入所述滑槽(30)中的导滑块(3)形成可相对滑动的卡合结构(100)；两段汇流排(10、20)分别位于该卡合结构(100)的两端，并分别固定连接在不同导流板上；
    所述电连接装置(4)设置于所述卡合结构(100)的顶部或是侧面，并将两个导流板(1、2)电连接。
  2. 如权利要求1所述的汇流排膨胀接头，其特征在于，
    所述两个导流板为左侧导流板(1)和右侧导流板(2)，每个导流板均包含相对的第一端和第二端，所述左侧导流板的第一端(11)与左侧汇流排(10)固定连接，所述右侧导流板的第一端(21)与右侧汇流排(20)固定连接；
    所述导滑块(3)包含左导滑块(31)和右导滑块(32)，所述左导滑块(31)与所述左侧导流板的第二端(12)固定连接，与所述右侧导流板(2)滑动连接；所述右导滑块(32)与所述右侧导流板的第二端(22)固定连接，与所述左侧导流板(1)滑动连接。
  3. 如权利要求2所述的汇流排膨胀接头，其特征在于，
    所述电连接装置(4)具有两个第一导电支撑座(41)、两个第二导电支撑座(42)及两根导电杆(43)；每个导流板均固定连接一第一导电支撑座(41)和一第二导电支撑座(42)，固定于同一导流板上的第一导电支撑座(41)与第二导电支撑座(42)通过导电杆(43)电连接；所述导电杆(43)位于导流板的顶部或侧面处，且在两个导流板(1、2)相对滑动或静止时两根导电杆(43)之间保持电连接。
  4. 如权利要求3所述的汇流排膨胀接头，其特征在于，所述两个第一导电支撑座(41)分别固定设置于所述左侧导流板的第一端(11)和所述右侧导流板的第一端(21)的上端面之上，所述两个第二导电支撑座(42)分别固定设置于所述左侧导流板的第二端(12)和所述右侧导流板的第二端(22)的上端面之上；
    每个第一导电支撑座(41)上均设有第一固定套孔(A)，每个第二导电支撑座(42)上均设有第二固定套孔(B)，每个第二导电支撑座(42) 还具有向对侧导流板上端面延伸的滑动套座(420)，且该滑动套座(420)的下端面(421)与对侧导流板的上端面不接触，所述滑动套座(420)上设有导向孔(C)；
    所述两根导电杆(43)分别设置于位于同一侧导流板上的第一导电支撑座(41)和第二导电支撑座(42)之间，每根导电杆(43)的两端均固定套设于所在侧导流板上的第一固定套孔(A)与第二固定套孔(B)之间，且中间穿套于所在侧导流板正上方的导向孔(C)，并通过所述第一固定套孔(A)、第二固定套孔(B)及导向孔(C)导电。
  5. 如权利要求1或2所述的汇流排膨胀接头，其特征在于，
    所述电连接装置(4)具有两个上导电板(71)、两个软连接装置(72)及两个下导电板(73)，每个导流板上均固定连接一上导电板(71)和一下导电板(73)；每个所述上导电板(71)均与一个下导电板(73)相互对应通过所述软连接装置(72)电连接，且电连接的上导电板(71)与下导电板(73)固定于不同导流板上。
  6. 如权利要求5所述的汇流排膨胀接头，其特征在于，
    所述两个上导电板(71)为包括水平臂(711)和竖直臂(712)的L型，所述两个上导电板(71)分别倒扣于所述卡合结构(100)的顶部之上，两个上导电板(71)的竖直臂(712)对称固定于所述两个导流板(1、2)靠近末端处的外侧面上；
    所述两个下导电板(73)为L型，所述两个下导电板(73)对称固定于所述两个导流板(1、2)中部的外侧面上；
    所述两个软连接装置(72)的一端分别与所述两个上导电板(71)的水平臂(711)电连接，另一端分别与固定于对侧导流板上的下导电板(73)电连接；
    在所述下导电板(73)与软连接装置(72)相连的一端上均连接有支撑所述软连接装置(72)的支撑板(74)。
  7. 如权利要求6所述的汇流排膨胀接头，其特征在于，所述软连接装置(72)包括套设于外且可随之弯曲形变的外壳(75)；所述支撑板(74)的长度大于等于所述软连接装置(72)长度的一半，其宽度大于等于所述软连接装置(72)的宽度。
  8. 如权利要求1或2所述的汇流排膨胀接头，其特征在于，所述每个导流板连接有汇流排的一端均设有沿线路延伸的端头，该端头嵌入所连接的 汇流排内腔中，且每个所述端头分别与导流板整体挤压成型。
  9. 如权利要求8所述的汇流排膨胀接头，其特征在于，在所述每个导流板与汇流排相连接处的外侧面通过紧固件分别连接有导电带，该导电带分别与相接触的导流板及汇流排电连接。
  10. 如权利要求1或2所述的汇流排膨胀接头，其特征在于，所述滑槽(30)下表面处设有若干向下部凹陷的凹槽(33)。
  11. 如权利要求1或2所述的汇流排膨胀接头，其特征在于，所述导滑块(3)为截面呈H形或C形的长条状结构。
  12. 如权利要求1或2所述的汇流排膨胀接头，其特征在于，所述两个导流板(1、2)的外侧面下部均通过紧固件连接有一组接触线夹板(6)，且位于远离该侧汇流排最末端处的接触线夹板(60)呈上翘状分布。
  13. 如权利要求1或2所述的汇流排膨胀接头，其特征在于，所述两个导流板(1、2)的外侧面下部均通过紧固件连接有条状整体式接触线夹板(8)，且位于远离该侧汇流排最末端处的条状整体式接触线夹板(8)呈上翘状分布。
  14. 如权利要求4所述的汇流排膨胀接头，其特征在于，所述第一固定套孔(A)和第二固定套孔(B)内均嵌装有套设于所述导电杆(43)外的导电元件(51)，所述导电杆(43)为空心导电杆或实心导电杆。
  15. 如权利要求4所述的汇流排膨胀接头，其特征在于，
    所述导向孔(C)内嵌装有套设于所述导电杆(43)外的弹性导电元件(52)和轴承(53)，且所述导向孔(C)的两端设有套设于导电杆(43)外的密封圈(54)。
  16. 如权利要求4所述的汇流排膨胀接头，其特征在于，所述滑动套座(420)的下端面(421)上嵌装有滑动垫片(422)。
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