A rigid contact wire telescopic disconnection device

Abstract

This invention provides a telescopic disconnection device for rigid contact wires, belonging to the field of rigid contact wire technology. It solves the problem of low service life in existing rigid contact wire disconnection devices. This rigid contact wire includes a first busbar and a second busbar. The disconnection device includes a third busbar, a first clamp fixed to the inner end of the first busbar, two second clamps fixed to the inner end of the second busbar, and a drive and positioning structure. The first and second clamps suspend the third busbar. The drive and positioning structure drives the third busbar to move along its own length direction away from the first clamp and positions it so that there is a gap between the first and third busbars. The drive and positioning structure then drives the third busbar in the opposite direction to move along its own length direction, allowing it to pass through and be suspended in the first clamp, and positioning it so that the first busbar connects to the second busbar through the third busbar. This telescopic disconnection device for rigid contact wires has the advantage of improving the service life of the disconnection device.

Description

Technical Field

[0001] This invention belongs to the field of rigid contact wire technology and relates to a telescopic disconnection device for rigid contact wire. Background Technology

[0002] Subway lines must be equipped with floodgates when passing through river sections or tunnels. Under normal operation, the floodgates are open and the rigid contact wire passes through the area where the floodgates are located. When an unexpected flood event causes floodwater to enter the tunnels and stations, the rigid contact wire located in the floodgate area needs to be disconnected so that the floodgates can be closed to block the flood and ensure the safety of subway engineering equipment and personnel.

[0003] Disconnection of a rigid contact network requires a disconnection device. Existing disconnection devices, such as the one disclosed in Chinese patent literature [Patent No.: 202210937705.0; Application Publication No.: CN115092016B], include a rigid contact network comprising a fixedly installed first busbar, a second busbar, a third busbar, and a fourth busbar. The third and fourth busbars are located between the first and second busbars. The disconnection device includes a mounting post, a cantilever that can rotate around the mounting post, and a clamping clamp mounted on the cantilever. When the clamp is closed, it clamps the third and fourth busbars, connecting them. When the clamp is open, the third busbar can rotate around the first busbar under its own weight, and the fourth busbar can rotate around the second busbar under its own weight.

[0004] This type of disconnect device, when closing the floodgate, opens the opening and closing clamps, causing the third and fourth busbars to disconnect and rotate under their own weight, creating enough space for the large floodgate to pass through and close. However, the impact force when the third and fourth busbars disconnect and rotate under their own weight is relatively large, causing damage to the hinge joints of the first and second busbars, thus reducing the service life of the disconnect device. Furthermore, after the flood, the operator needs to lift the third and fourth busbars and use the closing clamps to reset them, which is cumbersome, time-consuming, and labor-intensive. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned problems in the prior art by proposing a rigid contact wire telescopic disconnection device, which solves the technical problem of how to improve the service life of the disconnection device.

[0006] The objective of this invention can be achieved through the following technical solution: a rigid contact wire telescopic disconnection device, wherein the rigid contact wire includes a first busbar and a second busbar fixedly and spaced apart, characterized in that the disconnection device includes a third busbar, a first clamp fixed to the inner end of the first busbar, two second clamps fixed to the inner end of the second busbar, and a drive positioning structure located at the inner end of the second busbar, wherein the first clamp and the second clamp are used to suspend the third busbar, the length of the third busbar is greater than the distance between the first busbar and the second busbar, the drive positioning structure drives the third busbar to move away from the first clamp along its own length direction and positions it so that there is a distance between the first busbar and the third busbar, and the drive positioning structure drives the third busbar to move in the opposite direction along its own length direction and then pass through and suspend it in the first clamp and positions it so that the first busbar is connected to the second busbar through the third busbar.

[0007] This rigid contact wire telescopic disconnect device is installed in the tunnel. The floodgate in the tunnel moves vertically. The first, second, and third busbars, as well as the first and second clamps, are all conductive and electrically connected. Contact wires are installed at the bottom of the first, second, and third busbars to contact the pantograph and provide power to the rail transit. When the floodgate is open, the disconnect device is closed, meaning the third busbar extends and is suspended from the first and second clamps. The third busbar is positioned by the drive positioning structure, connecting the first and second busbars, allowing continuous power supply to the rail transit. When the floodgate is closed, the disconnect device is open. The drive positioning structure drives the third busbar to move along its length away from the first clamp, creating a gap between the first and third busbars, causing the third busbar to retract. Because there is also a gap between the first and second busbars, the floodgate can move downwards through this gap to close, protecting against flooding. After the flood, the floodgate opens upwards, and the drive positioning structure reverses its direction, moving the third busbar along its length. This causes the third busbar to extend, with one end re-threaded and suspended in the first clamp, reconnecting the first and second busbars and ensuring continuous power supply to the rail transit system. This disconnection device uses the drive positioning structure to move the third busbar along its length, preventing the rigid contact network from bearing the impact force during disconnection and avoiding damage. Reversing the movement of the third busbar along its length by the drive positioning structure returns the disconnection device to a closed state and positions it. This disconnection device is mechanically automated, eliminating the need for manual lifting of the third busbar, making operation convenient, extending the device's lifespan, and reducing effort during reset.

[0008] In the aforementioned rigid contact wire telescopic disconnection device, the third busbar is located on the same side of the first and second busbars, and all three are installed at the same height. This structure ensures that the contact wires at the bottom of the first, second, and third busbars are at the same height, resulting in smooth contact between the contact wires and the pantograph of the rail transit system, thus improving the stability of the rigid contact wire.

[0009] In the aforementioned rigid contact wire telescopic disconnection device, the third busbar is parallel to the first busbar, and there is a gap between the third busbar and the first busbar along its width direction. The third busbar is also parallel to the second busbar, and there is a gap between the third busbar and the second busbar along its width direction. This structure allows the third busbar to better coordinate with the first and second busbars after telescopic translation, resulting in a more stable overall structure.

[0010] In the aforementioned rigid contact wire telescopic disconnection device, first rollers are provided on both sides of the first clamp, and the first rollers abut against the bottom surfaces of the top two sides of the third busbar. Second rollers are provided on both sides of the second clamp, and the second rollers abut against the bottom surfaces of the top two sides of the third busbar. The arrangement of the first and second rollers reduces friction, ensuring smooth movement of the third busbar and preventing jamming. This improves the stability of the telescopic movement of the disconnection device, thereby extending its service life and making resetting the device easier.

[0011] In the aforementioned rigid contact wire telescopic disconnection device, the drive positioning structure includes a motor for driving, a stabilizing seat fixed to the inner end of the second busbar, and a rack fixed to the top of the third busbar. The rack is arranged along the length of the third busbar. A drive shaft is connected to the output shaft of the motor, one end of which passes through the stabilizing seat. A gear is fixed to one end of the drive shaft, and the gear meshes with the rack. The motor is mounted on the tunnel wall, which reduces the load on the second busbar. The stabilizing seat improves the stability of one end of the drive shaft, ensuring precise meshing between the gear and the rack. This ensures that the drive positioning structure can drive the third busbar by moving the rack through the gear, thus making the telescopic movement of the disconnection device easier. Simultaneously, when the gear is fixed, the rack can be positioned by the gear, thereby achieving the positioning of the third busbar and improving its stability, thus enhancing the stability of the disconnection device. A reducer or similar structure is installed between the motor and the drive shaft.

[0012] In the aforementioned rigid contact wire telescopic disconnection device, the stabilizing seat includes a stabilizing clamp and a pressure block fixedly connected to the top of the second busbar. The pressure block is fixedly connected to the stabilizing clamp, and a stabilizing hole for the drive shaft to pass through is provided between the stabilizing clamp and the pressure block. This structure allows the stabilizing seat to better clamp the drive shaft, and the stabilizing seat enables the drive shaft to move synchronously with the second and third busbars, preventing torsion and improving the stability of the disconnection device.

[0013] In the aforementioned rigid contact wire telescopic disconnection device, the first clamp has a first clearance groove, the second clamp has a second clearance groove, and the rack passes through the first clearance groove and the second clearance groove. This structure allows the drive positioning structure to better fit with the first and second clamps.

[0014] In another scenario, in the aforementioned rigid contact wire telescopic disconnection device, the drive positioning structure includes a motor fixed to the inner end of the second busbar, a gear fixed to the output shaft of the motor, and a rack fixed to the top of the third busbar. The rack is arranged along the length of the third busbar, and the gear meshes with the rack. A reducer or similar structure is installed between the motor and the drive shaft.

[0015] In the aforementioned rigid contact wire telescopic disconnection device, the first clamp includes a first clamp, a second clamp, and a first connecting plate. The first clamp is fixedly connected to the first busbar, one end of the first connecting plate is fixedly connected to the top of the first clamp, and the second clamp is fixedly connected to the bottom of the other end of the first connecting plate, thus suspending the second clamp. The second clamp is used to suspend the third busbar. This structure allows the third busbar to be suspended to one side of the first busbar.

[0016] In the aforementioned rigid contact wire telescopic disconnection device, the second clamp includes a third clamp, a fourth clamp, and a second connecting plate. The third clamp is fixedly connected to the second busbar, one end of the second connecting plate is fixedly connected to the top of the third clamp, and the fourth clamp is fixedly connected to the bottom of the other end of the second connecting plate, thus suspending the fourth clamp. The fourth clamp is used to suspend the third busbar. This structure allows the third busbar to be suspended on one side of the second busbar. Compared with the prior art, the rigid contact wire telescopic disconnection device provided by the present invention has the following advantages:

[0017] 1. This disconnection device drives the third busbar to translate along its own length direction through a drive positioning structure, so that the rigid contact network does not have to bear the impact force when the disconnection device disconnects, thus avoiding damage to the disconnection device. By driving the third busbar to translate along its own length direction in the opposite direction through the drive positioning structure, the disconnection device can be restored to the closed state and the third busbar can be positioned. This disconnection device is mechanically automated, eliminating the need for manual lifting of the third busbar, making operation convenient, improving the service life of the disconnection device, and making the reset of the disconnection device less labor-intensive.

[0018] 2. The drive positioning structure of this disconnecting device can realize the movement and positioning of the third busbar through the cooperation of gears and racks. The structure is simple, the positioning is accurate, and the stability of the disconnecting device is improved. Attached Figure Description

[0019] Figure 1 This is the front view of the rigid contact wire telescopic disconnection device.

[0020] Figure 2 This is a top view of the rigid contact wire telescopic disconnection device.

[0021] Figure 3 This is a diagram showing the state of the rigid contact wire telescopic disconnection device when it is closed.

[0022] Figure 4 This is a diagram showing the state of the rigid contact wire telescopic disconnection device when it is disconnected.

[0023] In the diagram, 1. First busbar; 2. Second busbar; 3. Third busbar; 4. First clamp; 41. First clearance groove; 42. First chuck; 43. Second chuck; 44. First connecting plate; 5. Second clamp; 51. Second clearance groove; 52. Third chuck; 53. Fourth chuck; 54. Second connecting plate; 6. Drive positioning structure; 61. Motor; 62. Stabilizer; 621. Stabilizer chuck; 622. Pressure block; 623. Stabilizer hole; 63. Rack; 64. Drive shaft; 65. Gear; 7. First roller; 8. Second roller; 9. Floodgate. Detailed Implementation

[0024] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0025] like Figure 1 , Figure 2 As shown, the rigid contact wire includes a first busbar 1, a second busbar 2, and a telescopic disconnect device. The telescopic disconnect device includes a third busbar 3, a first clamp 4, a second clamp 5, and a drive positioning structure 6.

[0026] The first busbar 1 and the second busbar 2 are fixed and spaced apart. The third busbar 3 is located on the same side of the first busbar 1 and the second busbar 2, and all three are installed at the same height. The length of the third busbar 3 is greater than the distance between the first busbar 1 and the second busbar 2. The third busbar 3 is parallel to the first busbar 1, and there is a gap between the third busbar 3 and the first busbar 1 along its own width direction. The third busbar 3 is parallel to the second busbar 2, and there is a gap between the third busbar 3 and the second busbar 2 along its own width direction.

[0027] The first clamp 4 is fixedly connected to the inner end of the first busbar 1. Specifically, the first clamp 4 includes a first clamp 42, a second clamp 43, and a first connecting plate 44. The first clamp 42 is fixedly connected to the first busbar 1. One end of the first connecting plate 44 is fixedly connected to the top of the first clamp 42. The second clamp 43 is fixedly connected to the bottom of the other end of the first connecting plate 44, so that the second clamp 43 is suspended in the air. The second clamp 43 is used to suspend the third busbar 3. The second clamp 43 has a first clearance groove 41. The two sides of the second clamp 43 are provided with first rollers 7, which abut against the bottom surfaces of the top two sides of the third busbar 3.

[0028] There are two second clamps 5, which are fixedly connected at an interval to the inner end of the second busbar 2. Specifically, the second clamp 5 includes a third clamp 52, a fourth clamp 53, and a second connecting plate 54. The third clamp 52 is fixedly connected to the second busbar 2, one end of the second connecting plate 54 is fixedly connected to the top of the third clamp 52, and the fourth clamp 53 is fixedly connected to the bottom of the other end of the second connecting plate 54, so that the fourth clamp 53 is suspended in the air. The fourth clamp 53 is used to suspend the third busbar 3. The fourth clamp 53 has a second clearance groove 51, and second rollers 8 are provided on both sides of the fourth clamp 53. The second rollers 8 abut against the bottom surface of the top two sides of the third busbar 3.

[0029] The drive positioning structure 6 is located at the inner end of the second busbar 2. In this embodiment, the drive positioning structure 6 includes a motor 61 for driving, a stabilizing seat 62 fixed to the inner end of the second busbar 2, and a rack 63 fixed to the top of the third busbar 3. The rack 63 is arranged along the length direction of the third busbar 3. A drive shaft 64 is connected to the output shaft of the motor 61. One end of the drive shaft 64 passes through the stabilizing seat 62, and a gear 65 is fixed to the end of one end of the drive shaft 64. The gear 65 meshes with the rack 63. The stabilizing seat 62 includes a stabilizing seat 63 fixed to the top of the second busbar 2. The stabilizing chuck 621 and the pressure block 622 are fixedly connected to the stabilizing chuck 621. There is a stabilizing hole 623 between the stabilizing chuck 621 and the pressure block 622 for the drive shaft 64 to pass through. The rack 63 passes through the first clearance groove 41 and the second clearance groove 51. In actual production, the drive positioning structure 6 includes a motor 61 fixedly connected to the inner end of the second busbar 2, a gear 65 fixedly connected to the output shaft of the motor 61, and a rack 63 fixedly connected to the top of the third busbar 3. The rack 63 is arranged along the length direction of the third busbar 3, and the gear 65 meshes with the rack 63.

[0030] When floodgate 9 is opened, if Figure 3 As shown, the disconnecting device is closed, meaning the third busbar 3 is extended. The third busbar 3 is suspended from the first clamp 4 and the second clamp 5, and is positioned by the drive positioning structure 6, allowing the first busbar 1 to connect to the second busbar 2 via the third busbar 3, thus continuously supplying power to the rail transit. When the floodgate 9 is closed, as... Figure 4 As shown, the disconnecting device is open. The driving positioning structure 6 drives the third busbar 3 to move along its own length, moving away from the first clamp 4, creating a gap between the first busbar 1 and the third busbar 3. This causes the third busbar 3 to retract. Since there is also a gap between the first busbar 1 and the second busbar 2, the floodgate 9 can move downwards through this gap to close, thus protecting against flooding. After the flood, the floodgate 9 moves upwards and opens. The driving positioning structure 6 then drives the third busbar 3 in the opposite direction, moving it along its own length, causing the third busbar 3 to extend. One end of the third busbar 3 is then re-entered and suspended in the first clamp 4, allowing the first busbar 1 to reconnect with the second busbar 2 through the third busbar 3, ensuring continuous power supply to the rail transit system.

[0031] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

[0032] Although this document frequently uses terms such as first busbar 1, second busbar 2, third busbar 3, first clamp 4, first clearance groove 41, first chuck 42, second chuck 43, first connecting plate 44, second clamp 5, second clearance groove 51, third chuck 52, fourth chuck 53, second connecting plate 54, drive positioning structure 6, motor 61, stabilizer 62, stabilizer chuck 621, pressure block 622, stabilizer hole 623, rack 63, drive shaft 64, gear 65, first roller 7, second roller 8, and floodgate 9, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of the invention; interpreting them as any additional limitation would contradict the spirit of the invention.

Claims

1. A telescopic disconnection device for a rigid contact wire, the rigid contact wire comprising a first busbar (1) and a second busbar (2) fixedly and spaced apart, characterized in that, The disconnection device includes a third busbar (3), a first clamp (4) fixed to the inner end of the first busbar (1), two second clamps (5) fixed to the inner end of the second busbar (2), and a drive positioning structure (6) located at the inner end of the second busbar (2). The first clamp (4) and the second clamps (5) are used to suspend the third busbar (3). The length of the third busbar (3) is greater than the distance between the first busbar (1) and the second busbar (2). The drive positioning structure (6) drives the third busbar (3) to move away from the first clamp (4) along its own length direction and positions it so that there is a distance between the first busbar (1) and the third busbar (3). The drive positioning structure (6) drives the third busbar (3) in the opposite direction. After the busbar (3) moves along its own length direction, it is suspended in the first clamp (4) and positioned so that the first busbar (1) is connected to the second busbar (2) through the third busbar (3). The drive positioning structure (6) includes a motor (61) for driving, a stabilizing seat (62) fixed to the inner end of the second busbar (2) and a rack (63) fixed to the top of the third busbar (3). The rack (63) is arranged along the length direction of the third busbar (3). A drive shaft (64) is connected to the output shaft of the motor (61). One end of the drive shaft (64) passes through the stabilizing seat (62). A gear (65) is fixed to one end of the drive shaft (64). The gear (65) meshes with the rack (63).

2. The rigid contact wire telescopic disconnection device according to claim 1, characterized in that, The third busbar (3) is located on the same side of the first busbar (1) and the second busbar (2), and the three are installed at the same height.

3. The rigid contact wire telescopic disconnection device according to claim 1, characterized in that, The third bus (3) is parallel to the first bus (1), and the third bus (3) has a gap between itself and the first bus (1) along its own width direction. The third bus (3) is parallel to the second bus (2), and the third bus (3) has a gap between itself and the second bus (2) along its own width direction.

4. A rigid contact wire telescopic disconnection device according to claim 1, 2, or 3, characterized in that, The first clamp (4) has a first roller (7) on both sides, and the first roller (7) abuts against the bottom surface on both sides of the top of the third busbar (3). The second clamp (5) has a second roller (8) on both sides, and the second roller (8) abuts against the bottom surface on both sides of the top of the third busbar (3).

5. A rigid contact wire telescopic disconnection device according to claim 1, 2, or 3, characterized in that, The stabilizer (62) includes a stabilizer chuck (621) and a pressure block (622) fixed to the top of the second busbar (2). The pressure block (622) is fixed to the stabilizer chuck (621). There is a stabilizer hole (623) between the stabilizer chuck (621) and the pressure block (622) for the drive shaft (64) to pass through.

6. A rigid contact wire telescopic disconnection device according to claim 1, 2, or 3, characterized in that, The first wire clamp (4) has a first clearance groove (41), and the second wire clamp (5) has a second clearance groove (51). The rack (63) passes through the first clearance groove (41) and the second clearance groove (51).

7. A rigid contact wire telescopic disconnection device according to claim 1, 2, or 3, characterized in that, The first clamp (4) includes a first clamp (42), a second clamp (43) and a first connecting plate (44). The first clamp (42) is fixed to the first busbar (1). One end of the first connecting plate (44) is fixed to the top of the first clamp (42). The second clamp (43) is fixed to the bottom of the other end of the first connecting plate (44) so ​​that the second clamp (43) is suspended. The second clamp (43) is used to suspend the third busbar (3).

8. A rigid contact wire telescopic disconnection device according to claim 1, 2, or 3, characterized in that, The second clamp (5) includes a third clamp (52), a fourth clamp (53), and a second connecting plate (54). The third clamp (52) is fixed to the second busbar (2). One end of the second connecting plate (54) is fixed to the top of the third clamp (52). The fourth clamp (53) is fixed to the bottom of the other end of the second connecting plate (54) so ​​that the fourth clamp (53) is suspended. The fourth clamp (53) is used to suspend the third busbar (3).

9. A rigid contact wire telescopic disconnection device, wherein the rigid contact wire includes a first busbar (1) and a second busbar (2) fixedly and spaced apart, characterized in that, The disconnection device includes a third busbar (3), a first clamp (4) fixed to the inner end of the first busbar (1), two second clamps (5) fixed to the inner end of the second busbar (2), and a drive positioning structure (6) located at the inner end of the second busbar (2). The first clamp (4) and the second clamps (5) are used to suspend the third busbar (3). The length of the third busbar (3) is greater than the distance between the first busbar (1) and the second busbar (2). The drive positioning structure (6) drives the third busbar (3) to move away from the first clamp (4) along its own length direction and positions the first busbar (1) and the third busbar (2) to be connected. There is a gap between the busbars (3). The drive positioning structure (6) drives the third busbar (3) to move along its own length direction and then passes through and hangs in the first clamp (4) and positions it so that the first busbar (1) is connected to the second busbar (2) through the third busbar (3). The drive positioning structure (6) includes a motor (61) fixed to the inner end of the second busbar (2), a gear (65) fixed to the output shaft of the motor (61) and a rack (63) fixed to the top of the third busbar (3). The rack (63) is arranged along the length direction of the third busbar (3). The gear (65) meshes with the rack (63).

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