CN101823446A - Contact rail expansion joint - Google Patents
Contact rail expansion joint Download PDFInfo
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- CN101823446A CN101823446A CN 201010157301 CN201010157301A CN101823446A CN 101823446 A CN101823446 A CN 101823446A CN 201010157301 CN201010157301 CN 201010157301 CN 201010157301 A CN201010157301 A CN 201010157301A CN 101823446 A CN101823446 A CN 101823446A
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Abstract
The invention provides a contact rail expansion joint, belonging to the field of traffic facilities. The invention solves the problems of the existing expansion joint that the power outage is caused by low strength and easy wear, the installation and the sliding are affected by high strength, the current-carrying capacity is unstable and the like. The contact rail expansion joint is used for connecting a contact rail I and a contact rail II, wherein the contact rail I and the contact rail II are on the same line and the cross section of the contact rail I and the contact rail II is 'I-shaped'. The joint comprises a guide plate which is arranged between the two contact rails and guides the extension and the contraction of the contact rails. The invention is characterized in that a conductive long strip rigid bus plate is additionally arranged between the two contact rails and the bus plate is respectively in contact with the back surfaces of the two contact rails. The invention has the advantages that the mechanical strength is high, the service life is long, the conductivity is strong because contact fingers are used as conducting pieces for electric connection, the contact points of the contact fingers in contact with the bus plate and the corresponding contact rails are always kept unchanged when the contact rails are extended or contracted and thereby the current-carrying capacity is ensured to be stable and constant.
Description
Technical field
The present invention relates to the conductor rail in a kind of underground railway track traffic, particularly relate to a kind of contact rail expansion joint, belong to field of traffic facilities.
Background technology
Contact rail claims the 3rd rail again, and the contact rail system is the important subsystem of metro traction electric power system, and it directly has influence on the safe operation of electric power supply system for subway even whole subway system.Contact rail is I-shape usually, its parallel outside of being located at underground railway track, the shoegear that links to each other with train acts on the end face or the bottom surface of contact rail, in the process that train is advanced shoegear is slided on contact rail, thus with the current delivery on the contact rail to the train using electricity system.Expand with heat and contract with cold owing to temperature Change produces in order to solve contact rail, generally contact rail is divided into the segmentation of some certain-lengths, adopt expansion pipe to connect between each segmentation, not only can offset the stroke of contact rail, can also guarantee the conduction continuity of whole contact rail.
The version of expansion pipe is a lot, a kind of " conductor rail joint " disclosed as China Patent No. 200620071433, it adopts a conducting block to connect two sections conductor rails, conducting block is pressed on the gusset of conductor rail waist by the cross-under bolt, pass vertical waist shaped hole of cross-under bolt from gusset, make conductor rail and conducting block can overcome between them friction force and in the length range that waist shaped hole limits vertical slide relative, the two ends of conducting block are connected with the gusset of two sections conductor rails by being flexible coupling of conduction respectively.Wherein, conducting block is used to compensate the stroke of conductor rail, is flexible coupling to play the effect of the conductor rail current lead-through that makes conducting block and conducting block both sides.
Though this structure can guarantee certain current-carrying capacity, be flexible coupling if adopt copper litz wire, its fatigue wear is big, easily breaks during elongation, and tripping operation easily mops floor during contraction; When adopting stacked copper sheet conduct to be flexible coupling, because of its thickness is big, volume is big, has both influenced installation, is difficult for again sliding.
Just like China Patent No. 200420085909 a kind of " track traffic contact rail expansion joint device " disclosed also, the structure that is used to compensate the contact rail stroke in this device is identical with above-mentioned patent, its difference is the electric connection structure between joint and the contact rail, the electric connection structure of this device mainly comprises current connector main leaf and current connector bluff bit, the current connector main leaf is fixed on the upper surface of left slide rail by copper pad, the current connector bluff bit is two, the overlapping back of right-hand member is fixed on the upper surface of right slide rail by copper pad, left end becomes " U " shape structure, and the current connector main leaf inserts in " U " shape structure and current connector bluff bit sliding block joint.When left slide rail and the elongation of right slide rail, current connector main leaf and current connector bluff bit slide face-to-face, both contact surfaces increase, this moment, current-carrying capacity was big, when left slide rail and the shortening of right slide rail, current connector main leaf and current connector bluff bit dorsal glide, both contact surfaces reduce, and this moment, current-carrying capacity was little.This shows that this electric connection mode exists the unsettled shortcoming of current-carrying capacity, and current connector main leaf and current connector bluff bit itself are thinner, after continuing wearing and tearing, electric conductivity reduces greatly.
Summary of the invention
It is steadily flexible to the purpose of this invention is to provide a kind of contact rail that can make, and makes the Joint strenght height between adjacent two contact rails, the contact rail expansion joint that conducts electricity very well.
Purpose of the present invention can realize by following technical proposal: a kind of contact rail expansion joint, be used for connecting and be located along the same line and cross-sectional plane is the contact rail one and the contact rail two of " worker " font, the face that is used on two contact rails make shoegear get stream is for positive, the face relative with the front is the back side, the face that is positioned at positive both sides is the side, this joint comprises the flexible guide plate of being located between described two contact rails that play the guiding role for contact rail, it is characterized in that, also be provided with a rigidity cylinder manifold with strip shape of conductive capability between described two contact rails, described cylinder manifold contacts with the back side of two contact rails respectively, and is equipped with some the fingertips that can improve conductive capability in the contact position of described cylinder manifold and two contact rails.
By this joint some the contact rails with certain-length are connected to form is used to the subway transportation train that the electric rail of electric current is provided, article two, the distance between the contact rail is determined by the stroke of contact rail, this joint has two functions, the first compensates the stroke of contact rail by guide plate, guide plate plays the effect that connects two contact rails on the one hand, and it can also guarantee that contact rail is flexible along its length direction all the time on the other hand; It two is to make two contact rail current lead-through by the rigidity cylinder manifold.
Contact rail adopts I-shape usually, and it has a front, a back side and two sides, wherein, stream interface of getting in the end face of contact rail and the bottom surface as shoegear, this face is " front ", and another face is " back side ", and the rigidity cylinder manifold contacts with the back side; " side " is meant the side that is positioned at both sides, front (the perhaps back side), i.e. the face of being made up of the vertical plane of vertical floor and the dip plane that links to each other with the two ends up and down of this vertical plane with groove; After the contact position of cylinder manifold and two contact rails is provided with fingertip, can improve the contact pressure between cylinder manifold and two contact rails, make that the electrical connection current-carrying is steady, current-carrying capacity is big, the concrete structure of fingertip belongs to prior art, it is made by the high-quality conductive material, be used to strengthen the contact performance of two conductors, annular fingertip, lobe shape fingertip, Z-shaped fingertip, banded fingertip etc. are arranged.
In above-mentioned contact rail expansion joint, it is banded that described each bar fingertip is, and each bar fingertip all is parallel to the cross-sectional direction of two contact rails.Have a plurality of Contact Tooth on the plane of action of fingertip, fingertip is arranged to be parallel to the cross-sectional direction of contact rail, can make the direction of Contact Tooth be parallel to the flexible direction of contact rail, particularly when having slide relative between contact rail and the cylinder manifold, make Contact Tooth slide, thereby prevent from because of the Contact Tooth distortion even damage to influence conductive capability along the flexible direction of contact rail; The more important thing is that this mounting means can avoid a part of fingertip to be located on the cylinder manifold corresponding to the interval of two contact rails fingertip can't be contacted with contact rail is stable, make no matter contact rail is to guarantee all under elongation or the situation about shortening that fingertip keeps identical contact point with cylinder manifold and cooresponding contact rail, and then guarantee that whole piece electricity rail has constant current-carrying capacity.
In above-mentioned contact rail expansion joint, described each bar fingertip all is fixed on the back side of corresponding contact rail.The back side of contact rail is more smooth, is convenient to install.
In above-mentioned contact rail expansion joint, described guide plate roof pressure on the side of two contact rails and can be relative two contact rails slide, by sliding block joint, the connection end and the cylinder manifold of described contact rail two fix between the connection end of described contact rail one and the cylinder manifold.This connection mode is asymmetric, and wherein contact rail one relative cylinder manifold slides, and contact rail two relative cylinder manifolds are fixed.
In above-mentioned contact rail expansion joint, have on the described cylinder manifold vertically and the chute one that matches with contact rail one.It is steady, reliable that this structure makes that contact rail one slides.
In above-mentioned contact rail expansion joint, be provided with the sliding plate one that fixes with this contact rail between described cylinder manifold and the contact rail one, described sliding plate one and cylinder manifold sliding block joint, described fingertip are located at the contact position of this contact rail and sliding plate one and sliding plate one and cylinder manifold.Match with cylinder manifold by sliding plate one, can prevent the contact rail wearing and tearing, the more important thing is that this structure can be applicable to cross sectional shape, the contact rail that varies in size, use quite flexible.
As another kind of situation, in above-mentioned contact rail expansion joint, the interval of described two contact rails also be provided with one with two contact rails in line and the fixed track that fixes with cylinder manifold, the middle part of described guide plate and this fixed track fix, the two ends of described guide plate respectively roof pressure on the side of corresponding contact rail and with cooresponding contact rail sliding block joint, the coupling end portion of described two contact rails respectively with the cylinder manifold sliding block joint.Fixed track is meant that length is short, the cross section conductor rail identical with contact rail, because length is short, so fixed track is very little because of the stroke that Changes in weather causes, can ignore, fixed track, guide plate and cylinder manifold three fix, and between fixed track and two contact rails, the stroke that certain spacing is used to compensate contact rail being set all, its compensation rate can double.
In above-mentioned contact rail expansion joint, have the chute two of vertical perforation on the described cylinder manifold, the connection end of described two contact rails all with chute two bearing fits.Adopt the chute structure to make contact rail steadily flexible.
In above-mentioned contact rail expansion joint, also be respectively equipped with liner plate between the madial wall of described cylinder manifold and two contact rails.Set up the wearing and tearing that can reduce contact rail behind the liner plate, help increasing the service life.
In above-mentioned contact rail expansion joint, described liner plate is fixed on the cooresponding contact rail.Liner plate is affixed on the outer wall of contact rail, and is easy for installation.
In above-mentioned contact rail expansion joint, be equipped with the sliding plate two that fixes with cooresponding contact rail between described two contact rails and the cylinder manifold, two sliding plates two all with chute two bearing fits, described fingertip is located at the contact position of two sliding plates two and cooresponding contact rail and two sliding plates two and cylinder manifold.Equally, sliding plate two can reduce the wearing and tearing of contact rail, and is applicable to the contact rail of Any shape.
In above-mentioned contact rail expansion joint, all has the guide groove that is parallel to its length direction and laterally runs through on the side of described two contact rails, the two ends of described guide plate respectively by bolt on the side of corresponding contact rail, and described bolt be horizontally through cooresponding guide groove and with the guide groove bearing fit.Bolt not only can play interconnect function, plays directional tagging simultaneously again.
In above-mentioned contact rail expansion joint, described bolt outside thread is connected with roller, described roller and guide groove bearing fit.The outside face of bolt is a flat of thread, and it is outer to connect the area of contact that can increase behind a roller with the guide groove inwall, thereby improves conductive capability.
In above-mentioned contact rail expansion joint, the side of described guide plate and two contact rails matches.Help increasing area of contact, improve electric conductivity.
Compared with prior art, the present invention has following advantage:
1, adopt the rigidity cylinder manifold as the middleware that is electrically connected, mechanical strength height, not easy to wear, fracture, long service life; Cylinder manifold contacts fully with the back side of contact rail, makes contact rail flexible steadily, reliable, conducts electricity very well, and helps improving the Joint strenght of integral joint; Adopt fingertip as the conducting piece that is electrically connected, conductive capability is strong, when contact rail takes place to stretch, though the area of contact between cylinder manifold and two contact rails can increase or reduce, but being located at cylinder manifold remains with cylinder manifold and contact rail with many fingertips between two contact rails and contacts, make each fingertip remain unchanged, thereby guarantee steady, constant current-carrying capacity with the contact point of cylinder manifold and corresponding contact rail;
2, simple in structure, easy for installation, the structure that contact rail is connected with cylinder manifold by sliding plate directly gets final product the waist that sliding plate is fixed on contact rail with fastener applicable to the contact rail of Any shape, and be not subjected to the restriction of contact rail cross sectional shape, widely applicable;
3, the electrical connections of this structure can be used as independently product, and volume is little, is convenient to transportation, highly versatile.
Description of drawings
Fig. 1 is first kind of structural representation of contact rail expansion joint of the present invention.
Fig. 2 is the A-A sectional structure scheme drawing of Fig. 1.
Fig. 3 is second kind of structural representation of contact rail expansion joint of the present invention.
Fig. 4 is the B-B sectional structure scheme drawing of Fig. 3.
Fig. 5 is the third structural representation of contact rail expansion joint of the present invention.
Among the figure, 1 contact rail one; 2 contact rails two; 3 guide plates; 4 cylinder manifolds; 4a chute one; 4b chute two; 5 fingertips; 6 sliding plates one; 7 sliding plates two; 8 fixed track; 9 liner plates; 10 guide grooves; 11 rollers; 12 wear-resisting bands; 13 bolts.
The specific embodiment
Below be specific embodiments of the invention and in conjunction with the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiment.
Embodiment one
This contact rail expansion joint mainly comprises and being used for the flexible guide plate that play the guiding role 3 of contact rail and the cylinder manifold 4 that is used to be electrically connected.Specifically, this contact rail expansion joint can make some the contact rails with certain-length vertically be arranged on the same straight line, and be connected to form and be used to the subway transportation train that the electric rail of electric current is provided, the cross-sectional plane of contact rail is " worker " font, one in its bottom surface and the end face is and the contacted front of shoegear, another is and the contacted back side of rigidity cylinder manifold, the both sides at the front or the back side are the side that is used to install guide plate, and the distance between adjacent two contact rails depends on the longitudinal extension amount of two contact rails.
As shown in Figure 1, all be connected with a guide plate 3 on two sides of contact rail 1 and contact rail 22, for two relative guide plates 3 of contact rail are slided, on the side of contact rail 1 and contact rail 22, all offer the guide groove 10 that is parallel to its length direction and laterally runs through, the two ends of guide plate 3 laterally are connected on the cooresponding contact rail by bolt 13 respectively, and the outer rollers 11 that are socketed with of bolt 13, roller 11 pass guide groove 10 and with guide groove 10 bearing fits; Certainly, guide groove 10 also can be located on the guide plate 3.
When contact rail 1 and contact rail 22 takes place when flexible, guide plate 3 impels their alongst to slide all the time, thereby has realized the flexible compensation to contact rail.
In order to increase electric conductivity, can make the cross-sectional plane of guide plate 3 make the shape that the side with contact rail matches, as shown in Figure 2, thereby strengthen the area of contact of guide plate and contact rail.
On the electrical connection face of contact rail 1, be fixed with sliding plate 1 by bolt, have chute one 4a that is dovetail form longitudinally corresponding to sliding plate one 6 places on the cylinder manifold 4, sliding plate 1 can slide in chute one 4a, in order to increase lubricity, can set up conduction fat in the cylinder manifold 4 and the contact position of sliding plate 1; Captive joint with cylinder manifold 4 in the connection end of contact rail 22.
In order to improve conductive capability, also can some the fingertips 5 that can improve conductive capability all be set in cylinder manifold 4 and the contact position of contact position, sliding plate 1 and the contact rail 1 of sliding plate 1 and the contact position of cylinder manifold 4 and contact rail 22.The structure of fingertip 5 belongs to prior art, it is made by the high-quality conductive material, commonly used have annular fingertip, lobe shape fingertip, Z-shaped fingertip, a banded fingertip etc., and the contact pressure that it can improve between cylinder manifold 4 and two contact rails makes that the electrical connection current-carrying is steady, current-carrying capacity is big.Adopted banded fingertip 5 in the present embodiment, and the cross-sectional direction that each bar fingertip 5 all is parallel to contact rail is fixed on the back side of corresponding contact rail.Have a plurality of Contact Tooth on the plane of action of fingertip 5, fingertip 5 is arranged to be parallel to the cross-sectional direction of contact rail, can make the direction of Contact Tooth be parallel to the flexible direction of contact rail, particularly when having slide relative between contact rail and the cylinder manifold 4, make Contact Tooth slide, thereby prevent from because of the Contact Tooth distortion even damage to influence conductive capability along the flexible direction of contact rail.
When actual installation, need make this joint and contact rail built on stilts on the ground, and parallel laid is in the side of underground railway track.When contact rail expanded or shrink, contact rail 1 can slide along guide plate 3 relative cylinder manifolds 4, guarantees steady, constant current-carrying capacity simultaneously, thereby reaches the effect of contact rail expansion compensation.
Embodiment two
As shown in Figure 3, Figure 4, the structure of present embodiment and embodiment one is basic identical, its difference is: the interval between contact rail 1 and the contact rail 22 also be provided with one with two contact rails in line and the fixed track 8 that fixes with cylinder manifold 4, the middle part of guide plate 3 is by bolt 13 (as bolt) with fixed track 8 captives joint, its two ends respectively roof pressure on the side of corresponding contact rail and with cooresponding contact rail sliding block joint; And have chute two 4b of vertical perforation on cylinder manifold 4, the end of contact rail 1 and contact rail 22 all is positioned at chute two 4b and matches with chute two 4b.When all relative cylinder manifold 4 slips with contact rail 22 of contact rail 1 take place when flexible contact rail 1 and contact rail 22.
Also be respectively equipped with the liner plate 9 that is fixed on the cooresponding contact rail between the madial wall of cylinder manifold 4 and the contact rail, liner plate 9 can reduce the wearing and tearing of contact rail, helps prolonging the service life of contact rail.
Embodiment three
As shown in Figure 5, structure and the principle of present embodiment and embodiment two are basic identical, its difference only is: contact rail 1 and contact rail 22 match with chute two 4b on the cylinder manifold 4 by the sliding plate 27 that is fixed on its electrical connection face respectively, can significantly reduce the wearing and tearing to contact rail like this.
Claims (14)
1. contact rail expansion joint, be used for connecting and be located along the same line and cross-sectional plane is the contact rail one (1) and the contact rail two (2) of " worker " font, two contact rails (1,2) face that is used on make shoegear get stream is for positive, the face relative with the front is the back side, the face that is positioned at positive both sides is the side, this joint comprises is located at described two contact rails (1,2) between for contact rail (1,2) the flexible guide plate that play the guiding role (3), it is characterized in that, described two contact rails (1,2) also be provided with a rigidity cylinder manifold (4) with strip shape of conductive capability between, described cylinder manifold (4) respectively with two contact rails (1,2) the back side contacts, and at described cylinder manifold (4) and two contact rails (1,2) contact position is equipped with some the fingertips (5) that can improve conductive capability.
2. contact rail expansion joint according to claim 1 is characterized in that, it is banded that described each bar fingertip (5) is, and each bar fingertip (5) all is parallel to the cross-sectional direction of two contact rails (1,2).
3. contact rail expansion joint according to claim 2 is characterized in that, described each bar fingertip (5) all is fixed on the back side of corresponding contact rail.
4. contact rail expansion joint according to claim 2, it is characterized in that, described guide plate (3) roof pressure is on the side of two contact rails (1,2) and can relative two contact rails (1,2) slide, by sliding block joint, the connection end of described contact rail two (2) and cylinder manifold (4) fix between the connection end of described contact rail one (1) and the cylinder manifold (4).
5. contact rail expansion joint according to claim 4 is characterized in that, has on the described cylinder manifold (4) vertically and the chute one (4a) that matches with contact rail one (1).
6. contact rail expansion joint according to claim 5, it is characterized in that, be provided with the sliding plate one (6) that fixes with this contact rail between described cylinder manifold (4) and the contact rail one (1), described sliding plate one (6) and cylinder manifold (4) sliding block joint, described fingertip (5) are located at the contact position of this contact rail and sliding plate one (6) and sliding plate one (6) and cylinder manifold (4).
7. contact rail expansion joint according to claim 2, it is characterized in that, the interval of described two contact rails (1,2) also be provided with one section with two contact rails (1,2) in line and the fixed track (8) that fixes with cylinder manifold (4), the middle part of described guide plate (3) and this fixed track (8) fix, the two ends of described guide plate (3) respectively roof pressure on the side of corresponding contact rail and with cooresponding contact rail sliding block joint, the coupling end portion of described two contact rails (1,2) respectively with cylinder manifold (4) sliding block joint.
8. contact rail expansion joint according to claim 7 is characterized in that, has the chute two (4b) of vertical perforation on the described cylinder manifold (4), the connection end of described two contact rails all with chute two (4b) bearing fit.
9. contact rail expansion joint according to claim 8 is characterized in that, also is respectively equipped with liner plate (9) between the madial wall of described cylinder manifold (4) and two contact rails.
10. contact rail expansion joint according to claim 9 is characterized in that, described liner plate (9) is fixed on the cooresponding contact rail.
11. contact rail expansion joint according to claim 9, it is characterized in that, be equipped with the sliding plate two (7) that fixes with cooresponding contact rail between described two contact rails (1,2) and the cylinder manifold (4), two sliding plates two (7) all with chute two (4b) bearing fit, described fingertip (5) is located at the contact position of two sliding plates two (7) and cooresponding contact rail and two sliding plates two (7) and cylinder manifold (4).
12. according to arbitrary described contact rail expansion joint of claim 4-11, it is characterized in that, all has the guide groove (10) that is parallel to its length direction and laterally runs through on the side of described two contact rails, the two ends of described guide plate (3) are fixed on the side of corresponding contact rail by bolt (13) respectively, and described bolt (13) be horizontally through cooresponding guide groove (10) and with guide groove (10) bearing fit.
13. contact rail expansion joint according to claim 12 is characterized in that, described bolt (13) outside thread is connected with roller (11), described roller (11) and guide groove (10) bearing fit.
14. contact rail expansion joint according to claim 12 is characterized in that, described guide plate (3) matches with the side of two contact rails (1,2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101573017A CN101823446B (en) | 2010-04-28 | 2010-04-28 | Contact rail expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101573017A CN101823446B (en) | 2010-04-28 | 2010-04-28 | Contact rail expansion joint |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210323179.5A Division CN102815231B (en) | 2010-04-28 | 2010-04-28 | Expansion joint of subway contact rails |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101823446A true CN101823446A (en) | 2010-09-08 |
| CN101823446B CN101823446B (en) | 2012-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101573017A Active CN101823446B (en) | 2010-04-28 | 2010-04-28 | Contact rail expansion joint |
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| CN (1) | CN101823446B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102200393A (en) * | 2011-06-21 | 2011-09-28 | 中国电子科技集团公司第二研究所 | Vacuum heating equipment |
| CN102320254A (en) * | 2011-06-29 | 2012-01-18 | 李雷 | Mandrel type expansion joint for aluminum-steel composite rails |
| CN102427172A (en) * | 2011-08-19 | 2012-04-25 | 成都金和工贸有限公司 | Telescopic connector used for supporting power supply rail |
| CN102501783A (en) * | 2011-10-25 | 2012-06-20 | 比威(天津)电气化系统有限责任公司 | Expansion joint for smooth transition of third rail of subway |
| CN107042772A (en) * | 2017-05-11 | 2017-08-15 | 李雷 | The making of built on stilts composite conductor rail of steel and aluminum system and installation method |
| CN107696917A (en) * | 2017-09-30 | 2018-02-16 | 北京星通浩宇科技发展有限公司 | A kind of low temperature resistant expansion pipe with shuttle shape fish tail guide plate |
| CN109484252A (en) * | 2017-09-12 | 2019-03-19 | 天津益昌电气设备股份有限公司 | Oscillating rod type expansion pipe |
| CN109693582A (en) * | 2017-10-20 | 2019-04-30 | 比亚迪股份有限公司 | Expansion pipe |
| CN110834570A (en) * | 2018-08-15 | 2020-02-25 | 比亚迪股份有限公司 | Contact rail assembly of track and track with same |
| EP4254684A1 (en) * | 2022-03-31 | 2023-10-04 | Conductix-Wampfler GmbH | Expansion connector for a conductor line and conductor line |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102200393A (en) * | 2011-06-21 | 2011-09-28 | 中国电子科技集团公司第二研究所 | Vacuum heating equipment |
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| CN102501783B (en) * | 2011-10-25 | 2015-01-14 | 比威(天津)电气化系统有限责任公司 | Expansion joint for smooth transition of third rail of subway |
| CN107042772A (en) * | 2017-05-11 | 2017-08-15 | 李雷 | The making of built on stilts composite conductor rail of steel and aluminum system and installation method |
| CN109484252A (en) * | 2017-09-12 | 2019-03-19 | 天津益昌电气设备股份有限公司 | Oscillating rod type expansion pipe |
| CN109484252B (en) * | 2017-09-12 | 2024-02-27 | 天津益昌电气设备股份有限公司 | Swinging rod type expansion joint |
| CN107696917A (en) * | 2017-09-30 | 2018-02-16 | 北京星通浩宇科技发展有限公司 | A kind of low temperature resistant expansion pipe with shuttle shape fish tail guide plate |
| CN107696917B (en) * | 2017-09-30 | 2023-12-19 | 北京星通浩宇科技发展有限公司 | Low-temperature-resistant expansion joint with shuttle-shaped fish tail guide plate |
| CN109693582A (en) * | 2017-10-20 | 2019-04-30 | 比亚迪股份有限公司 | Expansion pipe |
| CN110834570A (en) * | 2018-08-15 | 2020-02-25 | 比亚迪股份有限公司 | Contact rail assembly of track and track with same |
| EP4254684A1 (en) * | 2022-03-31 | 2023-10-04 | Conductix-Wampfler GmbH | Expansion connector for a conductor line and conductor line |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101823446B (en) | 2012-11-07 |
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