CN111806309A - Telescopic connector of contact rail without expansion joint - Google Patents
Telescopic connector of contact rail without expansion joint Download PDFInfo
- Publication number
- CN111806309A CN111806309A CN202010731983.1A CN202010731983A CN111806309A CN 111806309 A CN111806309 A CN 111806309A CN 202010731983 A CN202010731983 A CN 202010731983A CN 111806309 A CN111806309 A CN 111806309A
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- Prior art keywords
- filling
- rail
- seat
- contact
- connecting seat
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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
- B60M1/30—Power rails
- B60M1/305—Joints
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
Abstract
The invention discloses a telescopic connector of a contact rail without an expansion joint, which is arranged between two adjacent sections of contact rails, and comprises an A-end connecting seat and a B-end connecting seat, wherein the A-end connecting seat and the B-end connecting seat are respectively arranged at the end parts of two adjacent contact rails, the right end surface of the A-end connecting seat is right opposite to the left end surface of the B-end connecting seat, the upper part of the right end of the A-end connecting seat is provided with an upper connecting rail, the lower part of the left end of the B-end connecting seat is provided with a lower connecting rail, the upper connecting rail and the lower connecting rail are arranged in a vertically staggered manner, the upper connecting rail is positioned above the lower connecting rail, the lower end surface of the upper connecting rail is provided with a current-collecting sliding block, the upper end surface of the lower connecting rail is provided with a current-collecting sliding groove, and the current-collecting, so that both said contact rails are always electrically conducting.
Description
Technical Field
The invention relates to the field of contact rail connectors, in particular to a contact rail telescopic connector without an expansion joint.
Background
When the contact rails are installed, due to the influence of expansion with heat and contraction with cold, expansion joints need to be reserved between the adjacent contact rails, when the temperature of the rail bodies rises, the two rail bodies extend towards the direction of the reserved expansion joints, the expansion gaps become small, and otherwise, the expansion gaps become large. Through the in-process, consequently passing through, the current collector mechanism can take place the striking abnormal sound of different degrees and the unstable condition of induced current through the condition that the in-process, its current collector piston shoe receives the expansion joint influence, and the big more big influence of seam is big, and the fast influence more obvious that takes place by attitude change takes place for normal plane contact state, and resume to normal plane contact state again after passing through the expansion joint completely. The abnormal sound is very obvious under the low-noise background of magnetic suspension track traffic, and can cause visible or potential damage to the sliding shoes and related connecting mechanisms of the current collector, and is not beneficial to current collection.
Among the prior art, the expansion joint is whole seam, when the current collector passes through the expansion joint, is unfavorable for the current collector, and the part that the current collector passes through the expansion joint simultaneously is in unsettled state, takes place slight striking with the contact rail of butt joint after passing through the gap easily, sends the abnormal sound and probably causes visible or potential damage.
Disclosure of Invention
Therefore, an embodiment of the present invention provides a telescopic connector for a contact rail without an expansion joint, so as to solve the problems in the prior art that, because the expansion joint is an integral joint, when a current collector passes through the expansion joint, the current collector is not beneficial to current collection, and meanwhile, a part of the current collector passing through the expansion joint is in a suspended state, and is easy to slightly collide with the contact rail in a butt joint after passing through the joint, so as to generate abnormal sound and possibly cause visible or potential damage.
In order to achieve the above object, an embodiment of the present invention provides the following:
a telescopic connector of a contact rail without an expansion joint is arranged between two adjacent sections of contact rails and comprises an A-end connecting seat and a B-end connecting seat, wherein the A-end connecting seat and the B-end connecting seat are respectively arranged at the end parts of two adjacent contact rails, and the right end surface of the A-end connecting seat faces the left end surface of the B-end connecting seat;
the utility model discloses a power receiving device, including A end connecting seat, B end connecting seat, upper portion connection rail, lower part connection rail, upper portion connection rail and lower part connection rail crisscross setting from top to bottom just the upper portion connection rail is located the top of lower part connection rail, the lower terminal surface of upper portion connection rail is provided with the electric slider that receives, the up end of lower part connection rail is provided with the electric spout that receives, the electric slider that receives is along with two the expend with heat and contract with cold of conductor rail is in slide in the electric spout that receives, so that two the conductor rail remains the electricity conduction throughout.
As a preferred scheme of the present invention, an a-end filling assembly is disposed in a gap between a lower portion of a right end surface of the a-end connection base and the lower connection rail, a B-end filling assembly is disposed in a gap between an upper portion of a left end surface of the B-end connection base and the upper connection rail, and the a-end filling assembly and the B-end filling assembly have the same structure.
As a preferable scheme of the invention, the end a filling assembly includes a filling seat and an accommodating cavity, the filling seat is disposed at a lower portion of a right end face of the end a connecting seat, the accommodating cavity is disposed at a left end portion of the lower connecting rail, the filling seat is connected with a seat plate, the seat plate is vertically disposed along a length direction of the contact rail, and a tail end of the seat plate extends into the accommodating cavity.
As a preferred scheme of the present invention, a plurality of filling support rods are arranged on two side surfaces of the seat plate, the filling support rods are perpendicular to and vertically arranged on the seat plate, a support cylinder is sleeved outside the filling support rods, a filling top plate is connected to the end of the support cylinder, a filling support spring is sleeved outside the support cylinder, and two ends of the filling support spring are respectively connected to the filling top plate and the seat plate.
As a preferable mode of the present invention, the support cylinder wraps the end of the filling support rod, the end of the filling support rod is provided with a separation prevention block, the inner wall of the support cylinder is provided with a separation prevention ring, the separation prevention block has a cylindrical structure and a diameter equal to the inner diameter of the support cylinder, and the inner diameter of the separation prevention ring is equal to the diameter of the filling support rod.
As a preferable scheme of the present invention, a fixed magnetic ring is disposed at a lower end of the anti-drop ring, an electromagnetic ring opposite to the fixed magnetic ring is disposed on the seat, a control strip is disposed at a left end of the lower connecting rail, the control strip is inserted into the seat, an energizing block electrically connected to the electromagnetic ring is disposed on a surface of the seat, the energizing block extends to an inner cavity of the seat, and a power supply block corresponding to the energizing block is disposed on the control strip.
As a preferable scheme of the present invention, when the contact rail expands with heat and contracts with cold, the control bar slides in the seat plate, and when the contact rail slides until the power supply block contacts with the corresponding power-on block, the electromagnetic ring is powered on to generate a repulsive force to repel the fixed magnetic ring, so that the support cylinder overcomes the pulling force of the filling support spring to move outwards, so that the filling top plate moves outwards to be flush with the side surface of the lower connection rail.
As a preferable scheme of the present invention, the a-end filling assemblies have a plurality of groups, and are arranged side by side from top to bottom between the a-end connecting seat and the lower connecting rail, and the filling top plates in the a-end filling assemblies have different heights and widths, so that the filling top plates are filled into gaps between the a-end connecting seat and the lower connecting rail when the a-end connecting seat and the lower connecting rail expand with heat and contract with cold to different degrees.
The embodiment of the invention has the following advantages:
the invention decomposes the larger gap between two adjacent sections of contact rails into two smaller gaps which are not on the same vertical line any more to form dislocation, so that the contact state of the current collector is not changed when passing through the connector, and simultaneously, the upper connecting rail and the lower connecting rail are always in sliding connection to realize electric conduction in the processes of thermal expansion and cold contraction, thereby eliminating the problems of impact abnormal sound and unstable current collection, realizing the electric conduction connection without adjacent force and deformation of a contact rail system, and improving the service life of the current collector and related connecting mechanisms and the running speed of vehicles.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
FIG. 1 is a schematic overall structure diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an A-side fill assembly according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of a support cylinder according to an embodiment of the present invention;
fig. 4 is a schematic view of the internal structure of the seat plate according to the embodiment of the present invention.
In the figure:
1. a contact rail; 2. an A end connecting seat; 3. a B end connecting seat; 4. an upper connecting rail; 5. a lower connecting rail; 6. a power receiving slider; 7. a power receiving chute; 8. an A-end filling assembly; 9. a B-end filling assembly; 10. a filling seat; 11. an accommodating chamber; 12. a seat plate; 13. filling the support rods; 14. a support cylinder; 15. filling the top plate; 16. filling the supporting spring; 17. an anti-drop block; 18. the anti-drop ring; 19. fixing a magnetic ring; 20. an electromagnetic ring; 21. a control bar; 22. a power-on block; 23. and a power supply block.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 4, an embodiment of the present invention provides a telescopic connector for contact rails without an expansion joint, which is disposed between two adjacent sections of contact rails 1, and includes an a-end connector base 2 and a B-end connector base 3, the a-end connector base 2 and the B-end connector base 3 are respectively disposed at the end portions of two adjacent contact rails 1, and the a-end connector base 2 and the B-end connector base 3 are both electrically connected to the contact rail 1 connected thereto, a right end surface of the a-end connector base 2 faces a left end surface of the B-end connector base 3, an upper connection rail 4 is disposed at an upper portion of a right end of the a-end connector base 2, a lower connection rail 5 is disposed at a lower portion of a left end of the B-end connector base 3, the upper connection rail 4 and the lower connection rail 5 are disposed in an up-down staggered manner, the upper connection rail 4 is located above the lower connection rail 5, a current-receiving slider 6 is disposed, receive the electric slider 6 and slide and insert and establish in receiving electric spout 7 to make upper portion connecting rail 4 and lower part connecting rail 5 keep in close contact and realize the electric conduction, so, when two contact rails 1 appear expend with heat and contract with cold the condition, receive the electric slider 6 and slide in receiving electric spout 7 along with the expend with heat and contract with cold of two contact rails 1, so that two contact rails 1 remain the electric conduction throughout.
And because the upper connecting rail 4 and the lower connecting rail 5 are always kept in a contact state, and two side surfaces of the upper connecting rail 4 and the lower connecting rail 5 are respectively butted with two side surfaces of the contact rail 1, so that the two side surfaces of the connector are flush with the two side surfaces of the contact rail 1, and finally, the non-abutting force and non-deformation conductive connection of a contact rail system is realized, the contact state of the current collector passing through the position of the connector is not changed, the problems of impact abnormal sound and unstable current collection are solved, and the working life of the current collector and related connecting mechanisms and the running speed of the vehicle are favorably improved.
Through the arrangement, a larger gap between two sections of contact rails 1 is divided into two smaller gaps, and the two gaps are not positioned on the same vertical line any more to form dislocation, so that the contact state of the current collector is not changed when the current collector passes through the connector, the problems of impact abnormal sound and unstable current collection are solved, the non-adjacent force and non-deformation conductive connection of a contact rail system is realized, and the service life of the current collector and related connection mechanisms is prolonged and the running speed of a vehicle is increased.
Further, in this embodiment, between the lower portion of the right end face of the a-end connection seat 2 and the lower connection rail 5 and between the upper portion of the left end face of the B-end connection seat 3 and the upper connection rail 4, in order to fill these two gaps, an a-end filling assembly 8 is disposed in the gap between the lower portion of the right end face of the a-end connection seat 2 and the lower connection rail 5, and a B-end filling assembly 9 is disposed in the gap between the upper portion of the left end face of the B-end connection seat 3 and the upper connection rail 4.
The structure of the a-side filling assembly 8 is the same as that of the B-side filling assembly 9, and the a-side filling assembly 8 is taken as an example for description. The A-end filling assembly 8 comprises a filling seat 10 and a containing cavity 11, the filling seat 10 is arranged on the lower portion of the right end face of the A-end connecting seat 2, the containing cavity 11 is arranged on the left end portion of the lower connecting rail 5, the filling seat 10 is connected with a seat plate 12, the seat plate 12 is vertically arranged along the length direction of the contact rail 1, the tail end of the seat plate 12 extends into the containing cavity 11, a plurality of filling support rods 13 are arranged on two side faces of the seat plate 12, the filling support rods 13 are perpendicular and vertically arranged with the seat plate 12, a support cylinder 14 is sleeved outside the filling support rods 13, a filling top plate 15 is connected with the tail end of the support cylinder 14, a filling support spring 16 is sleeved outside the support cylinder 14, two ends of the filling support spring 16 are respectively connected with the filling top plate 15 and the seat plate 12, the support cylinder 14 wraps the tail end of the filling support rods 13, an anti-falling block 17 is arranged at the tail end, the anti-slip block 17 has a cylindrical structure and has a diameter equal to the inner diameter of the support cylinder 14, and the anti-slip ring 18 has an inner diameter equal to the diameter of the packing support rod 13.
The lower end of the anti-drop ring 18 is provided with a fixed magnetic ring 19, the seat plate 12 is provided with an electromagnetic ring 20 opposite to the fixed magnetic ring 19, the left end of the lower connecting rail 5 is provided with a control strip 21, the control strip 21 is inserted in the seat plate 12, the surface of the seat plate 12 is provided with an electrifying block 22 electrically connected with the electromagnetic ring 20, the electrifying block 22 extends to the inner cavity of the seat plate 12, the control strip 21 is provided with a power supply block 23 corresponding to the electrifying block 22, when the contact rail 1 expands with heat and contracts with cold, the control strip 21 slides in the seat plate 12, when the power supply block 23 slides to be in contact with the corresponding electrifying block 22, the electromagnetic ring 20 is electrified to generate repulsion force to repel the fixed magnetic ring 19, so that the support cylinder 14 overcomes the pulling force of the filling support spring 16 to move outwards, and the filling top plate 15 moves outwards to be flush with the side surface of the.
When the contact rails 1 are installed, a movable contact gap is reserved between every two adjacent contact rails 1 to meet the requirement of expansion with heat and contraction with cold, and the reserved gap is larger than the sum of the lengths of the end portions of the two contact rails 1 extending when the two contact rails are thermally expanded. When the contact rail 1 expands to the maximum state, all parts at the right end of the filling seat 10 are covered by the accommodating cavity 11, at the moment, the filling support spring 16 is in an unstretched compressed state, the distance between the filling top plate 15 and the seat plate 12 is equal to the distance between the seat plate 12 and the inner wall of the accommodating cavity 11, the filling top plate 15 is in contact with the inner wall of the accommodating cavity 11 but has no pressure, along with temperature reduction, the contact rail 1 has a cold shrinkage phenomenon, the end part of the contact rail 1 retracts inwards, so that a gap between the two contact rails 1 is enlarged, in the process that the gap is enlarged, the lower connecting rail 5 is far away from the A-end connecting seat 2, the seat plate 12 is drawn out from the accommodating cavity 11, and the filling top plate 15 is exposed one.
Meanwhile, as the gap between the two contact rails 1 is increased, when the seat plate 12 is pulled outwards, the relative positions of the control strip 21 and the seat plate 12 are changed, so that the relative positions of the energizing block 22 and the power supply block 23 are also changed, when the gap between the two contact rails 1 is the width of the filling top plate 15, the positions of the energizing block 22 and the power supply block 23 are overlapped, so that the electromagnetic ring 20 is energized to generate repulsive force to repel the fixed magnetic ring 19, the support cylinder 14 overcomes the pulling force of the filling support spring 16 to move outwards, so that the filling top plate 15 is moved outwards to be flush with the side surface of the lower connecting rail 5, and the gap between the A-end connecting seat 2 and the lower connecting rail 5 is filled, so that the contact state of the current collector passing through the connector position is not changed, and the problems of impact abnormal sound and unstable current collection are solved.
In the above embodiment, as the cold contraction progresses, the gap between the two contact rails 1 becomes larger, and each time the increased width of the gap reaches the width of one of the top filling plates 15, the corresponding top filling plate 15 moves into the gap from the accommodating cavity 11 and is flush with the side surface of the contact rail 1, that is, the gap between the two contact rails 1 does not exceed the width of the top filling plate 15 at most, so as to change the large gap into the small gap, and the smaller the gap, the smaller the influence on the current collector is, so that the present embodiment can greatly reduce the influence on the current collector, so that the contact state of the current collector does not change when the current collector passes through the connector position, and the problems of impact noise and unstable current collector are eliminated.
Further, the end A filling assembly 8 has a plurality of groups, and is arranged side by side from top to bottom between the end A connecting seat 2 and the lower connecting rail 5, and the height of the top plate 15 is consistent and the width is different in different end A filling assemblies 8, so that the top plate 15 is filled in the gap between the end A connecting seat 2 and the lower connecting rail 5 when the expansion caused by heat and the contraction caused by cold are different. The same height can make the same row of filling top plates 15 can complement the gap of the height after being arranged side by side, avoid the dislocation of the height difference, thus, filled gaps are formed, the widths of the filling top plates 15 in different rows are different, the widths of the filling top plates 15 in different rows are gradually increased from top to bottom, and if the width of the gap is larger than the single width of the uppermost filling top plate 15, while being smaller than the width of two of the top filler sheets 15, if the widths of all the top filler sheets 15 are the same, a smaller gap will still remain after the top filler sheets 15 are moved into the gap, if the width of the top filling sheets 15 in different rows is different, the gap left between the top filling sheet 15 in the lower row and the lower connecting rail 5 is smaller than the gap left by the top filling sheet 15 in the first row, and the gaps left by the different rows of the filled top plates 15 are no longer in the same vertical line, which makes the current collector more stable when passing through the connector.
In the embodiment, a single large gap is decomposed into a plurality of small gaps, and the gaps are not collinear, so that the current collector can be stable and excessive, the contact state of the current collector is not changed when the current collector passes through the position of the connector, the problems of impact abnormal sound and unstable current collection are solved, the service life of the current collector and a related connecting mechanism is prolonged, and the running speed of a vehicle is increased.
On the other hand, in the present embodiment, the filling top plates 15 with different heights may also have the same height and the same width, but the filling top plate 15 closest to the seat plate 12 has different widths, and the filling top plate 15 closest to the seat plate 12 at the uppermost row has a smaller width and is sequentially larger from top to bottom, so that gaps left between the filling top plate 15 and the lower connecting rail 5 are not on the same vertical line, that is, the gaps left in each row are staggered, so that the contact state of the current collector passing through the connector position does not change, the problems of impact abnormal sound and unstable current collection are eliminated, and the service life of the current collector and the related connecting mechanism and the vehicle running speed are favorably improved.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (8)
1. A telescopic connector of a contact rail without an expansion joint is arranged between two adjacent sections of contact rails (1), and is characterized in that the connector comprises an A-end connecting seat (2) and a B-end connecting seat (3), the A-end connecting seat (2) and the B-end connecting seat (3) are respectively arranged at the end parts of two adjacent contact rails (1), and the right end surface of the A-end connecting seat (2) is just opposite to the left end surface of the B-end connecting seat (3);
the utility model discloses a power receiving device, including A end connection seat (2), left end connection seat (3), upper portion connection rail (4) and crisscross setting about lower portion connection rail (5) just upper portion connection rail (4) are located the top of lower portion connection rail (5), the lower terminal surface of upper portion connection rail (4) is provided with receives electric slider (6), the up end of lower portion connection rail (5) is provided with receives electric spout (7), receive electric slider (6) along with two the expend with heat and contract with cold of contact rail (1) is in it slides in electric spout (7) to receive electric spout (7), so that two contact rail (1) remains the electricity conduction throughout.
2. The telescopic connector for the contact rail without the expansion joint of claim 1, wherein an a-end filling component (8) is arranged in a gap between the lower part of the right end face of the a-end connecting seat (2) and the lower connecting rail (5), a B-end filling component (9) is arranged in a gap between the upper part of the left end face of the B-end connecting seat (3) and the upper connecting rail (4), and the a-end filling component (8) and the B-end filling component (9) have the same structure.
3. The telescopic connector of a contact rail without an expansion joint as claimed in claim 2, wherein the end a filling assembly (8) comprises a filling seat (10) and a containing cavity (11), the filling seat (10) is arranged at the lower part of the right end face of the end a connecting seat (2), the containing cavity (11) is arranged at the end part of the left end of the lower connecting rail (5), the filling seat (10) is connected with a seat plate (12), the seat plate (12) is vertically arranged along the length direction of the contact rail (1), and the end of the seat plate (12) extends into the containing cavity (11).
4. The telescopic connector of a contact rail without an expansion joint as claimed in claim 3, wherein a plurality of filling support rods (13) are arranged on two side surfaces of the seat plate (12), the filling support rods (13) are perpendicular and vertical to the seat plate (12), a support cylinder (14) is sleeved outside the filling support rods (13), a filling top plate (15) is connected to the end of the support cylinder (14), a filling support spring (16) is sleeved outside the support cylinder (14), and two ends of the filling support spring (16) are respectively connected to the filling top plate (15) and the seat plate (12).
5. The telescopic connector of a contact rail without an expansion joint as claimed in claim 4, wherein the supporting cylinder (14) wraps the end of the filling supporting rod (13), the end of the filling supporting rod (13) is provided with an anti-dropping block (17), the inner wall of the supporting cylinder (14) is provided with an anti-dropping ring (18), the anti-dropping block (17) is of a cylindrical structure and has a diameter equal to the inner diameter of the supporting cylinder (14), and the inner diameter of the anti-dropping ring (18) is equal to the diameter of the filling supporting rod (13).
6. The telescopic connector of a contact rail without an expansion joint as claimed in claim 5, wherein a fixed magnetic ring (19) is disposed at a lower end of the anti-falling ring (18), an electromagnetic ring (20) opposite to the fixed magnetic ring (19) is disposed on the seat plate (12), a control strip (21) is disposed at a left end of the lower connecting rail (5), the control strip (21) is inserted into the seat plate (12), an energizing block (22) electrically connected to the electromagnetic ring (20) is disposed on a surface of the seat plate (12), the energizing block (22) extends to an inner cavity of the seat plate (12), and a power supply block (23) corresponding to the energizing block (22) is disposed on the control strip (21).
7. The telescopic connector for contact rails without expansion joints as claimed in claim 6, wherein when the contact rail (1) expands with heat and contracts with cold, the control bar (21) slides in the seat plate (12), and when the control bar slides until the power supply block (23) contacts with the corresponding power supply block (22), the electromagnetic ring (20) is powered on to generate repulsive force to repel the fixed magnetic ring (19), so that the support cylinder (14) moves outwards against the pulling force of the filling support spring (16), and the filling top plate (15) moves outwards to be flush with the side surface of the lower connection rail (5).
8. The telescopic connector for contact rails without expansion joints according to claim 7, wherein the end A filling assemblies (8) are provided with a plurality of groups, the groups are arranged between the end A connecting seat (2) and the lower connecting rail (5) side by side up and down, and different heights and widths of the filling top plates (15) in the end A filling assemblies (8) are different, so that the filling top plates (15) are filled into gaps between the end A connecting seat (2) and the lower connecting rail (5) when the expansion joint and the contraction joint are different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010731983.1A CN111806309B (en) | 2020-07-27 | 2020-07-27 | Telescopic connector of contact rail without expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010731983.1A CN111806309B (en) | 2020-07-27 | 2020-07-27 | Telescopic connector of contact rail without expansion joint |
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| CN111806309A true CN111806309A (en) | 2020-10-23 |
| CN111806309B CN111806309B (en) | 2021-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010731983.1A Active CN111806309B (en) | 2020-07-27 | 2020-07-27 | Telescopic connector of contact rail without expansion joint |
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| CN210658750U (en) * | 2019-09-17 | 2020-06-02 | 许枭 | Waterproof construction at building structure expansion joint |
| CN210975520U (en) * | 2019-09-06 | 2020-07-10 | 王利 | Bridge rubber expansion joint device |
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- 2020-07-27 CN CN202010731983.1A patent/CN111806309B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0343097B2 (en) * | 1985-05-16 | 1991-07-01 | Hitachi Cable | |
| US5224575A (en) * | 1991-12-17 | 1993-07-06 | Inesscon Inc. | Power conductor rail expansion joint |
| JP2000318493A (en) * | 1999-05-10 | 2000-11-21 | Sumitomo Electric Ind Ltd | Joining structure of rigid overhead electric line |
| JP2005330746A (en) * | 2004-05-21 | 2005-12-02 | Nisshin Steel Co Ltd | Plate spring for expansive joint |
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| CN210658750U (en) * | 2019-09-17 | 2020-06-02 | 许枭 | Waterproof construction at building structure expansion joint |
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