A rigid catenary disconnection device

Abstract

The present invention provides a rigid catenary disconnection device, belonging to the technical field of catenary. It solves the problem that the existing disconnection device cannot close large-width vertical rotating flood control doors. This rigid catenary includes a fixedly arranged first busbar, a second busbar, a third busbar and a fourth busbar. The third busbar and the fourth busbar are located between the first busbar and the second busbar. The disconnection device includes a mounting post, a cantilever capable of rotating around the mounting post, and a switching clamp arranged on the cantilever. When the switching clamp is closed, it can clamp the third busbar and the fourth busbar to connect the third busbar and the fourth busbar. When the switching clamp is opened, the third busbar can rotate around the first busbar under the action of its own gravity, and the fourth busbar can rotate around the second busbar under the action of its own gravity. This disconnection device has the advantage that after the rigid catenary is disconnected, enough distance can be vacated to enable the large flood control door to be closed.

Description

Technical Field

[0001] The invention belongs to the technical field of catenary, and relates to a rigid catenary disconnection device. Background Art

[0002] In urban subway rail transit in China, the power supply method of rail vehicles with rigid catenary has been widely adopted. When a subway line passes through a river section or an interval tunnel, a flood control gate needs to be set. During normal operation, the flood control gate is open, and the rigid catenary passes through the area where the flood control gate is located. When an unexpected flood event causes flood to enter the tunnel and the station, the rigid catenary in the area of the flood control gate needs to be disconnected so that the flood control gate can be closed to block the flood and ensure the safety of subway engineering equipment and personnel.

[0003] To disconnect the rigid catenary, a disconnection device needs to be set. For example, the Chinese patent document discloses an automatic disconnection and restoration device for rigid catenary [Application No.: 201810761590.8; Publication No.: CN108621867A]. It adopts a three-section busbar structure, where two sections of busbars are respectively fixed on both sides of the opening and closing track of the flood control gate or partition gate. They are fixed busbars, including busbar fixed end Ⅰ, busbar fixed end Ⅱ fixed and hoisted on both sides of the tunnel wall, a sliding busbar joint, and a hinge busbar joint; a sliding busbar joint is connected to busbar fixed end Ⅰ to form a section of fixed busbar; a hinge busbar joint is connected to busbar fixed end Ⅱ to form another section of fixed busbar; the third section of busbar is a movable busbar, and the movable busbar is connected to the two sections of fixed busbars through the sliding busbar joint and the hinge busbar joint respectively; the movable busbar can rotate up and down along the hinge busbar joint to switch the connection and disconnection states of the busbar; the sliding busbar joint can bite and release the movable busbar, so that the busbar fixes the movable busbar in the connected position and releases the movable busbar in the disconnected position of the busbar.

[0004] For the automatic disconnection and restoration device with this structure, when disconnecting, the sliding busbar joint releases the movable busbar, and the movable busbar rotates around the hinge busbar joint, thereby disconnecting the rigid catenary and enabling the flood control gate to close. However, the height of the tunnel is limited, and the installation height of the movable busbar is certain. After the movable busbar is disconnected, the rotation distance is limited, and the offset distance after disconnection is limited. It can only be used for relatively small vertical-rotating flood control gates to close. For large tunnels and large-width vertical-rotating flood control gates, this structure of the automatic disconnection and restoration device cannot vacate enough distance after the movable busbar is disconnected, and the large-width vertical-rotating flood control gate cannot be closed. Summary of the Invention

[0005] The object of the present invention is to address the above problems existing in the prior art and propose a rigid catenary disconnection device. The technical problem to be solved is how to create enough space after disconnecting the rigid catenary so that a large floodgate can be closed.

[0006] The object of the present invention can be achieved by the following technical solutions: A rigid catenary disconnection device, wherein the rigid catenary includes a fixedly arranged first busbar and a second busbar. It is characterized in that the rigid catenary further includes a third busbar hinged to the first busbar and a fourth busbar hinged to the second busbar. The third busbar and the fourth busbar are located between the first busbar and the second busbar. The disconnection device includes a mounting post, a cantilever that can rotate around the mounting post, and an opening and closing wire clamp provided on the cantilever. When the opening and closing wire clamp is closed, it can clamp the third busbar and the fourth busbar to connect the third busbar and the fourth busbar. When the opening and closing wire clamp is opened, the third busbar can rotate around the first busbar under the action of its own gravity, and the fourth busbar can rotate around the second busbar under the action of its own gravity.

[0007] During normal use, the opening and closing wire clamp is closed to clamp the third busbar and the fourth busbar, so that the first busbar, the third busbar, the second busbar, and the fourth busbar are connected in sequence. When it is necessary to close the floodgate, the opening and closing wire clamp is opened, so that the third busbar and the fourth busbar are disconnected and rotate under the action of their own gravity. By vacating a larger and sufficient space through the two busbars of the third busbar and the fourth busbar, this space is sufficient for the large floodgate to pass through, so that the large floodgate can be closed without being stuck by the busbar, ensuring that the large floodgate can be closed. The mounting post can be suspended from the top of the tunnel, occupying a small space. The cantilever can rotate around the mounting post. During normal use, the cantilever is perpendicular to the busbar. When it is necessary to close the floodgate and after the opening and closing wire clamp releases the third busbar and the fourth busbar, the cantilever rotates away from the busbar, so that the cantilever and the opening and closing wire clamp do not obstruct the rotation of the floodgate, enabling the large floodgate to be closed.

[0008] In the above-mentioned rigid catenary disconnection device, the hinged end of the first busbar has a through first hinge hole with a long-strip cross-section, the length direction of the first hinge hole is consistent with the length direction of the first busbar, the hinged end of the third busbar has a through third hinge hole with a long-strip cross-section, the length direction of the third hinge hole is consistent with the length direction of the third busbar, and the first busbar and the third busbar are hinged by passing a first hinge shaft through the first hinge hole and the third hinge hole and locking. The setting of the first hinge hole and the third hinge hole in such a structure has the following advantages: firstly, when the first busbar and the third busbar are installed, their relative positions can be adjusted, so that the third busbar can be located at the optimal installation position; secondly, when the first busbar and the third busbar expand and contract due to heat, they can absorb the deformation amount caused by thermal expansion and contraction, enabling the first busbar and the third busbar to move relative to each other, preventing poor contact caused by deformation of the first busbar and the third busbar; thirdly, it ensures that the first hinge shaft will not get stuck, so that the first busbar and the third busbar will not be stuck due to factors such as thermal expansion and contraction, and the problem that the third busbar cannot rotate around the first busbar will not occur, reducing the failure rate. At the same time, the first busbar and the third busbar are hinged by passing the first hinge shaft through the first hinge hole and the third hinge hole and locking. The locking is not a dead lock. It only makes the first hinge shaft fixed and not move, but the third busbar can overcome this locking force and rotate around the first busbar under the action of its own gravity.

[0009] In the above-mentioned rigid catenary disconnection device, the hinged end of the first busbar has a pair of first adjustment holes that penetrate through and have a long-strip-shaped cross-section. The first hinge hole is located between the pair of first adjustment holes. The length direction of the first adjustment holes is the same as the length direction of the first busbar. A first fixing plate is attached to the outer side wall of the hinged end of the first busbar. The first fixing plate and the first busbar are fixedly connected by passing a first fastener through the first adjustment holes and the first fixing plate and tightening. The hinged end of the third busbar has a pair of third adjustment holes that penetrate through and have a long-strip-shaped cross-section. The third hinge hole is located between the pair of third adjustment holes. The length direction of the third adjustment holes is the same as the length direction of the third busbar. A third fixing plate is attached to the outer side wall of the hinged end of the third busbar. The third fixing plate and the third busbar are fixedly connected by passing a third fastener through the third adjustment holes and the third fixing plate and tightening. The first hinge shaft passes through the first fixing plate, the first hinge hole, the third hinge hole, and the third fixing plate and is locked to hinge the first busbar and the third busbar. The setting of the first adjustment holes and the first fastener can lock the first fixing plate. Part of the first hinge shaft abuts against the first fixing plate and presses the first fixing plate against the first busbar. The setting of the first fixing plate is equivalent to increasing the contact area between the first hinge shaft and the first busbar; the setting of the third adjustment holes and the third fastener can lock the third fixing plate. Part of the first hinge shaft abuts against the third fixing plate and presses the third fixing plate against the third busbar. The setting of the third fixing plate is equivalent to increasing the contact area between the first hinge shaft and the third busbar; the above structure improves the stability of the first hinge shaft, thereby improving the stability of the hinge between the first busbar and the third busbar. At the same time, the setting of the first fixing plate and the third fixing plate prevents the third busbar from deflecting during rotation, ensuring that the third busbar rotates around the first busbar in the set direction, ensuring that the third busbar will not get stuck, and reducing the failure rate.

[0010] In the above-mentioned rigid catenary disconnection device, the hinged end of the second busbar has a through second hinge hole with a long-strip cross-section, and the length direction of the second hinge hole is consistent with the length direction of the second busbar. The hinged end of the fourth busbar has a through fourth hinge hole with a long-strip cross-section, and the length direction of the fourth hinge hole is consistent with the length direction of the fourth busbar. The second busbar and the fourth busbar are hinged by passing a second hinge shaft through the second hinge hole and the fourth hinge hole and locking them. The setting of the second hinge hole and the fourth hinge hole in this structure has the following advantages: First, when the second busbar and the fourth busbar are installed, their relative positions can be adjusted, so that the fourth busbar can be located at the optimal installation position. Second, when the second busbar and the fourth busbar expand and contract due to heat, they can absorb the deformation amount caused by thermal expansion and contraction, enabling the second busbar and the fourth busbar to move relative to each other, preventing poor contact caused by deformation of the second busbar and the fourth busbar. Third, it ensures that the second hinge shaft will not get stuck, so that the second busbar and the fourth busbar will not be stuck due to factors such as thermal expansion and contraction, and the problem that the fourth busbar cannot rotate around the second busbar will not occur, reducing the failure rate. At the same time, the second busbar and the fourth busbar are hinged by passing the second hinge shaft through the second hinge hole and the fourth hinge hole and locking them. The locking is not a deadlock. It only makes the second hinge shaft fixed and not move, but the fourth busbar can overcome this locking force and rotate around the second busbar under the action of its own gravity.

[0011] In the above rigid catenary disconnection device, the hinged end of the second busbar has a pair of second adjustment holes that penetrate and have a long strip-shaped cross-section. The second hinge hole is located between the pair of second adjustment holes. The length direction of the second adjustment holes is the same as the length direction of the second busbar. A second fixing plate is attached to the outer side wall of the hinged end of the second busbar. The second fixing plate and the second busbar are fixedly connected by passing a second fastener through the second adjustment holes and the second fixing plate and locking them. The hinged end of the fourth busbar has a pair of fourth adjustment holes that penetrate and have a long strip-shaped cross-section. The fourth hinge hole is located between the pair of fourth adjustment holes. The length direction of the fourth adjustment holes is the same as the length direction of the fourth busbar. A fourth fixing plate is attached to the outer side wall of the hinged end of the fourth busbar. The fourth fixing plate and the fourth busbar are fixedly connected by passing a fourth fastener through the fourth adjustment holes and the fourth fixing plate and locking them. The second hinge shaft passes through the second fixing plate, the second hinge hole, the fourth hinge hole and the fourth fixing plate and is locked to hinge the second busbar and the fourth busbar. The setting of the second adjustment holes and the second fasteners can lock the second fixing plate. Part of the second hinge shaft abuts against the second fixing plate and presses the second fixing plate against the second busbar. The setting of the second fixing plate is equivalent to increasing the contact area between the second hinge shaft and the second busbar. The setting of the fourth adjustment holes and the fourth fasteners can lock the fourth fixing plate. Part of the second hinge shaft abuts against the fourth fixing plate and presses the fourth fixing plate against the fourth busbar. The setting of the fourth fixing plate is equivalent to increasing the contact area between the second hinge shaft and the fourth busbar. The above structure improves the stability of the second hinge shaft, thereby improving the stability of the hinge between the second busbar and the fourth busbar. At the same time, the setting of the second fixing plate and the fourth fixing plate prevents the fourth busbar from deflecting during rotation, ensures that the fourth busbar rotates around the second busbar in the set direction, ensures that the fourth busbar will not get stuck, and reduces the failure rate.

[0012] In the above rigid catenary disconnection device, the length of the third busbar is greater than the length of the fourth busbar. The lengths of the third busbar and the fourth busbar are reasonably allocated so that the third busbar and the fourth busbar will not hinder the closing of the floodgate after disconnection, and at the same time, the total length of the third busbar and the fourth busbar is as short as possible to ensure the overall stability of the busbar.

[0013] In the above rigid catenary disconnection device, the first busbar and the third busbar are electrically connected live through a first flexible electrical connection. The second busbar and the fourth busbar are electrically connected live through a second flexible electrical connection. Both the first flexible electrical connection strip and the second flexible electrical connection strip are not rigid and can be bent. After the third busbar and the fourth busbar rotate, the first flexible electrical connection strip and the second flexible electrical connection strip will not be damaged and can be used multiple times. At the same time, the electrical connection between the first busbar and the third busbar is ensured, and the electrical connection between the second busbar and the fourth busbar is ensured.

[0014] In the above-mentioned rigid catenary disconnection device, the switching clamp includes a bottom plate, clamping jaws hinged on both sides of the bottom plate, and a guide post passing through the center of the bottom plate. A pair of connecting bars are hinged to the bottom of the guide post, and the other ends of the pair of connecting bars are respectively hinged to the corresponding clamping jaws. When the guide post moves relative to the bottom plate, the clamping jaws can rotate around the bottom plate. When the guide post moves downward, the connecting bars can push the clamping jaws to rotate around the bottom plate, so that the two clamping jaws are loosened and no longer clamp the third busbar and the fourth busbar, enabling the third busbar and the fourth busbar to be disconnected; when the guide post moves upward, the connecting bars can push the clamping jaws to rotate around the bottom plate, so that the two clamping jaws are closed, enabling the two clamping jaws to clamp the third busbar and the fourth busbar.

[0015] In the above-mentioned rigid catenary disconnection device, an elastic member is sleeved outside the guide post. One end of the elastic member acts on the guide post, and the other end acts on the bottom plate. The elastic member makes the clamping jaws always have a tendency to rotate around the bottom plate and close. The setting of the elastic member ensures that the clamping jaws are closed, ensuring that the third busbar and the fourth busbar can be electrically connected and enabling the rigid catenary to work properly.

[0016] In the above-mentioned rigid catenary disconnection device, a first driver is fixedly connected to the cantilever. A connecting rod is fixedly connected to the output shaft of the first driver. A triangular plate is provided on the cantilever. The first angle of the triangular plate is hinged to the cantilever, the second angle is hinged to the top of the guide post, and the third angle is hinged to one end of the connecting rod. The first driver can drive the triangular plate to rotate around the cantilever through the connecting rod to drive the guide post to move relative to the bottom plate. The setting of the connecting rod is equivalent to extending the length of the output shaft of the first driver, enabling the first driver to be closer to the mounting post, making rational use of space. The first driver is relatively tall, not easily flooded by water and not easily damaged, enabling the switching clamp to be automatically controlled mechanically. The setting of the triangular plate cooperates with the connecting rod to realize the opening and closing of the switching clamp, and the structure is simple.

[0017] In the above-mentioned rigid catenary disconnection device, a first insulator that makes the cantilever non-energized is fixedly connected to the cantilever, and a second insulator that makes the connecting rod non-energized is fixedly connected to the connecting rod. The first insulator and the second insulator play an insulating role to prevent electric leakage.

[0018] In the above-mentioned rigid catenary disconnection device, a second driver is fixedly connected to the mounting post. The second driver is connected to the cantilever through a gear assembly or a synchronous pulley assembly, and the second driver can drive the cantilever to rotate around the mounting post. The setting of the second driver enables the cantilever to be rotated through mechanical control without manual closing. The second driver is installed on the mounting post and is relatively tall, not easily flooded by water and not easily damaged.

[0019] Compared with the prior art, a rigid catenary disconnection device provided by the present invention has the following advantages:

[0020] 1. The opening and closing line clamp of this disconnection device opens, disconnecting the third busbar and the fourth busbar and causing them to rotate under the action of their own gravity. By vacating a larger and sufficient space between the third busbar and the fourth busbar, this space is large enough for the large floodgate to pass through, ensuring that the large floodgate can be closed without being stuck by the busbar.

[0021] 2. This disconnection device controls the opening of the opening and closing line clamp through the first driver to disconnect the third busbar and the fourth busbar and cause them to rotate under the action of their own gravity, and controls the rotation of the cantilever through the second driver, realizing automatic control. Moreover, the mounting column is suspended from the top of the tunnel, and the first driver and the second driver are arranged at the mounting column, making reasonable use of the space at the top of the tunnel and not being easily flooded. Description of the Drawings

[0022] Figure 1 is the state diagram of the overall structure of this rigid catenary disconnection device in use.

[0023] Figure 2 is the connection schematic diagram of the busbars of this rigid catenary.

[0024] Figure 3 is the cross-sectional view of the hinged part of the first busbar and the third busbar of this rigid catenary.

[0025] Figure 4 is the cross-sectional view of the hinged part of the second busbar and the fourth busbar of this rigid catenary.

[0026] Figure 5 is the structural schematic diagram of this rigid catenary disconnection device.

[0027] In the figure, 1. First busbar; 101. First hinge hole; 102. First adjustment hole; 2. Second busbar; 21. Second hinge hole; 22. Second adjustment hole; 3. Third busbar; 31. Third hinge hole; 32. Third adjustment hole; 4. Fourth busbar; 41. Fourth hinge hole; 42. Fourth adjustment hole; 5. Mounting column; 6. Cantilever; 7. Opening and closing line clamp; 71. Bottom plate; 72. Claw; 73. Guide post; 74. Connecting bar; 75. Elastic member; 8. First hinge shaft; 9. First fixing plate; 10. First fastener; 11. Third fixing plate; 12. Third fastener; 13. Second hinge shaft; 14. Second fixing plate; 15. Second fastener; 16. Fourth fixing plate; 17. Fourth fastener; 18. First flexible electrical connection strip; 19. Second flexible electrical connection strip; 20. First driver; 21. Link; 22. Triangular plate; 23. First insulator; 24. Second insulator; 25. Second driver. Detailed Implementation Modes

[0028] The following are specific embodiments of the present invention. In combination with the accompanying drawings, the technical solutions of the present invention will be further described, but the present invention is not limited to these embodiments.

[0029] As Figure 1 , Figure 2 shown, this rigid catenary includes a first busbar 1, a second busbar 2, a third busbar 3, a fourth busbar 4, a first flexible electrical connection strip 18 and a second flexible electrical connection strip 19. The first busbar 1 and the second busbar 2 are fixedly arranged. The third busbar 3 and the fourth busbar 4 are located between the first busbar 1 and the second busbar 2. The length of the third busbar 3 is greater than the length of the fourth busbar 4. The first busbar 1 is hinged to the third busbar 3. The first busbar 1 and the third busbar 3 are electrically connected by the first flexible electrical connection strip 18. The second busbar 2 is hinged to the fourth busbar 4. The second busbar 2 and the fourth busbar 4 are electrically connected by the second flexible electrical connection strip 19.

[0030] As Figure 3 shown, the hinged end of the first busbar 1 has a first hinged hole 101 that penetrates and has a long strip-shaped cross-section and a pair of first adjustment holes 102. The first hinged hole 101 is located between the pair of first adjustment holes 102. The length directions of the first hinged hole 101 and the first adjustment holes 102 are both consistent with the length direction of the first busbar 1. A first fixing plate 9 is attached to the outer side wall of the hinged end of the first busbar 1. The first fixing plate 9 and the first busbar 1 are fixedly connected by a first fastener 10 such as a bolt passing through the first adjustment hole 102 and the first fixing plate 9 and being locked. The hinged end of the third busbar 3 has a third hinged hole 31 that penetrates and is long strip-shaped and a pair of third adjustment holes 32. The third hinged hole 31 is located between the pair of third adjustment holes 32. The length directions of the third hinged hole 31 and the third adjustment holes 32 are both consistent with the length direction of the third busbar 3. A third fixing plate 11 is attached to the outer side wall of the hinged end of the third busbar 3. The third fixing plate 11 and the third busbar 3 are fixedly connected by a third fastener 12 such as a bolt passing through the third adjustment hole 32 and the third fixing plate 11 and being locked. A first hinge shaft 8 passes through the first fixing plate 9, the first hinged hole 101, the third hinged hole 31 and the third fixing plate 11 and is locked to hinge the first busbar 1 and the third busbar 3.

[0031] As Figure 4As shown in the figure, the hinged end of the second bus bar 2 has a through second hinge hole 21 with a long strip-shaped cross-section and a pair of second adjustment holes 22. The second hinge hole 21 is located between the pair of second adjustment holes 22. The length directions of the second hinge hole 21 and the second adjustment holes 22 are the same as the length direction of the second bus bar 2. A second fixing plate 14 is attached to the outer side wall of the hinged end of the second bus bar 2. The second fixing plate 14 and the second bus bar 2 are fixedly connected by a second fastener 15 such as a bolt passing through the second adjustment holes 22 and the second fixing plate 14 and being locked. The hinged end of the fourth bus bar 4 has a through fourth hinge hole 41 with a long strip-shaped cross-section and a pair of fourth adjustment holes 42. The fourth hinge hole 41 is located between the pair of fourth adjustment holes 42. The length directions of the fourth hinge hole 41 and the fourth adjustment holes 42 are the same as the length direction of the fourth bus bar 4. A fourth fixing plate 16 is attached to the outer side wall of the hinged end of the fourth bus bar 4. The fourth fixing plate 16 and the fourth bus bar 4 are fixedly connected by a fourth fastener 17 such as a bolt passing through the fourth adjustment holes 42 and the fourth fixing plate 16 and being locked. The second hinge shaft 13 passes through the second fixing plate 14, the second hinge hole 21, the fourth hinge hole 41 and the fourth fixing plate 16 and is locked to hinge the second bus bar 2 and the fourth bus bar 4 together.

[0032] As Figure 5 As shown in the figure, the disconnecting device includes a mounting post 5, a cantilever 6, a switching clamp 7, a first driver 20, a connecting rod 21, a triangular plate 22 and a second driver 25. Both the first driver 20 and the second driver 25 are drive motors. The mounting post 5 is hung upside down on the top of the tunnel. A first insulator 23 that makes the cantilever 6 non-energized is fixedly connected in the cantilever 6. One end of the cantilever 6 is rotatably connected to the mounting post 5, and a first driver 20 is also fixedly connected to one end of the cantilever 6. The switching clamp 7 and the triangular plate 22 are arranged at the other end of the cantilever 6. The second driver 25 is fixedly connected to the mounting post 5. The second driver 25 can drive the cantilever 6 to rotate around the mounting post 5. In this embodiment, the second driver 25 is connected to the cantilever 6 through a gear assembly. In actual production, the second driver 25 can be connected to the cantilever 6 through a synchronous pulley assembly.

[0033] Specifically, the switching clamp 7 includes a bottom plate 71, clamping jaws 72 hinged on both sides of the bottom plate 71, a guide post 73 passing through the center of the bottom plate 71, and an elastic member 75 sleeved outside the guide post 73. A pair of connecting bars 74 are hinged to the bottom of the guide post 73, and the other ends of the pair of connecting bars 74 are respectively hinged to the corresponding clamping jaws 72. When the guide post 73 moves relative to the bottom plate 71, the clamping jaws 72 can be rotated around the bottom plate 71. The elastic member 75 is a cylindrical spring, and the elastic member 75 is sleeved outside the upper part of the guide post 73. One end of the elastic member 75 acts on the guide post 73, and the other end acts on the bottom plate 71. The elastic member 75 makes the clamping jaws 72 always have a tendency to rotate around the bottom plate 71 and close.

[0034] A connecting rod 21 is fixedly connected to the output shaft of the first driver 20. A second insulator 24 that does not conduct electricity is fixedly connected in the connecting rod 21. The first angle of the triangular plate 22 is hinged to the cantilever 6, the second angle is hinged to the top of the guide post 73, and the third angle is hinged to one end of the connecting rod 21. The first driver 20 can drive the triangular plate 22 to rotate around the cantilever 6 through the connecting rod 21 to drive the guide post 73 to move relative to the bottom plate 71.

[0035] During normal use, the cantilever 6 is perpendicular to the busbar. The first driver 20 cooperates with the elastic member 75 to close the opening and closing wire clamp 7. The opening and closing wire clamp 7 clamps the third busbar 3 and the fourth busbar 4, so that the first busbar 1, the third busbar 3, the second busbar 2, and the fourth busbar 4 are connected in sequence. When it is necessary to close the floodgate, the first driver 20 drives the connecting rod 21 to drive the triangular plate 22 to rotate, so that the guide post 73 moves downward against the elastic force of the elastic member 75. Through the connecting bar 74, the clamping jaw 72 rotates around the bottom plate 71 to open the clamping jaw 72. The third busbar 3 rotates around the first hinge shaft 8 under the action of its own gravity, and the fourth busbar 4 rotates around the second hinge shaft 13 under the action of its own gravity. The second driver 25 works to make the cantilever 6 rotate around the column, so that the opening and closing wire clamp 7 and the like are far away from the busbar. Then the floodgate is closed. The floodgate can be closed automatically or manually. After the flood prevention is over, the second driver 25 works to make the cantilever 6 rotate around the column to a set position, lift the third busbar 3 and the fourth busbar 4, and close and clamp the third busbar 3 and the fourth busbar 4 through the opening and closing wire clamp 7.

[0036] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0037] Although the terms such as the first bus bar 1, the first hinge hole 101, the first adjustment hole 102, the second bus bar 2, the second hinge hole 21, the second adjustment hole 22, the third bus bar 3, the third hinge hole 31, the third adjustment hole 32, the fourth bus bar 4, the fourth hinge hole 41, the fourth adjustment hole 42, the mounting post 5, the cantilever 6, the opening and closing wire clamp 7, the bottom plate 71, the clamping jaw 72, the guide post 73, the connecting bar 74, the elastic member 75, the first hinge shaft 8, the first fixing plate 9, the first fastener 10, the third fixing plate 11, the third fastener 12, the second hinge shaft 13, the second fixing plate 14, the second fastener 15, the fourth fixing plate 16, the fourth fastener 17, the first flexible electrical connection strip 18, the second flexible electrical connection strip 19, the first driver 20, the connecting rod 21, the triangular plate 22, the first insulator 23, the second insulator 24, the second driver 25 and so on are used more frequently in this text, the possibility of using other terms is not excluded. These terms are only used to more conveniently describe and explain the essence of the present invention; interpreting them as any kind of additional limitation is contrary to the spirit of the present invention.

Claims

1. A rigid catenary disconnection device, the rigid catenary comprising a first busbar (1) and a second busbar (2) fixedly arranged, characterized in that, The rigid catenary further includes a third busbar (3) hinged to the first busbar (1) and a fourth busbar (4) hinged to the second busbar (2). The third busbar (3) and the fourth busbar (4) are located between the first busbar (1) and the second busbar (2). The disconnecting device includes a mounting post (5), a cantilever (6) rotatable about the mounting post (5), and a switching clamp (7) provided on the cantilever (6). When the switching clamp (7) is closed, it can clamp the third busbar (3) and the fourth busbar (4) to connect the third busbar (3) and the fourth busbar (4). When the switching clamp (7) is opened, the third busbar (3) can rotate about the first busbar (1) under the action of its own gravity, and the fourth busbar (4) can rotate about the second busbar (2) under the action of its own gravity. The hinged end of the first busbar (1) has a through first hinge hole (101) with a long-strip cross-section, and the length direction of the first hinge hole (101) is the same as the length direction of the first busbar (1). The hinged end of the third busbar (3) has a through third hinge hole (31) with a long-strip cross-section, and the length direction of the third hinge hole (31) is the same as the length direction of the third busbar (3). The first busbar (1) and the third busbar (3) are hinged by passing a first hinge shaft (8) through the first hinge hole (101) and the third hinge hole (31) and locking them.

2. The rigid catenary disconnection device according to claim 1, characterized in that, The hinged end of the first busbar (1) has a pair of through first adjustment holes (102) with a long-strip cross-section. The first hinge hole (101) is located between the pair of first adjustment holes (102), and the length direction of the first adjustment holes (102) is the same as the length direction of the first busbar (1). A first fixing plate (9) is attached to the outer side wall of the hinged end of the first busbar (1). The first fixing plate (9) and the first busbar (1) are fixedly connected by passing a first fastener (10) through the first adjustment holes (102) and the first fixing plate (9) and locking them. The hinged end of the third busbar (3) has a pair of through third adjustment holes (32) with a long-strip cross-section. The third hinge hole (31) is located between the pair of third adjustment holes (32), and the length direction of the third adjustment holes (32) is the same as the length direction of the third busbar (3). A third fixing plate (11) is attached to the outer side wall of the hinged end of the third busbar (3). The third fixing plate (11) and the third busbar (3) are fixedly connected by passing a third fastener (12) through the third adjustment holes (32) and the third fixing plate (11) and locking them. The first busbar (1) and the third busbar (3) are hinged by passing the first hinge shaft (8) through the first fixing plate (9), the first hinge hole (101), the third hinge hole (31), and the third fixing plate (11) and locking them.

3. The rigid catenary disconnection device according to claim 1 or 2, characterized in that, The hinged end of the second bus bar (2) has a through second hinge hole (21) with a long-strip cross-section. The length direction of the second hinge hole (21) is the same as the length direction of the second bus bar (2). The hinged end of the fourth bus bar (4) has a through fourth hinge hole (41) with a long-strip cross-section. The length direction of the fourth hinge hole (41) is the same as the length direction of the fourth bus bar (4). The second bus bar (2) and the fourth bus bar (4) are hinged by passing a second hinge shaft (13) through the second hinge hole (21) and the fourth hinge hole (41) and locking them.

4. The rigid catenary disconnection device according to claim 3, characterized in that, The hinged end of the second bus bar (2) has a pair of through second adjustment holes (22) with a long-strip cross-section. The second hinge hole (21) is located between the pair of second adjustment holes (22). The length direction of the second adjustment holes (22) is the same as the length direction of the second bus bar (2). A second fixing plate (14) is attached to the outer side wall of the hinged end of the second bus bar (2). The second fixing plate (14) and the second bus bar (2) are fixedly connected by passing a second fastener (15) through the second adjustment holes (22) and the second fixing plate (14) and locking them. The hinged end of the fourth bus bar (4) has a pair of through fourth adjustment holes (42) with a long-strip cross-section. The fourth hinge hole (41) is located between the pair of fourth adjustment holes (42). The length direction of the fourth adjustment holes (42) is the same as the length direction of the fourth bus bar (4). A fourth fixing plate (16) is attached to the outer side wall of the hinged end of the fourth bus bar (4). The fourth fixing plate (16) and the fourth bus bar (4) are fixedly connected by passing a fourth fastener (17) through the fourth adjustment holes (42) and the fourth fixing plate (16) and locking them. The second bus bar (2) and the fourth bus bar (4) are hinged by passing the second hinge shaft (13) through the second fixing plate (14), the second hinge hole (21), the fourth hinge hole (41) and the fourth fixing plate (16) and locking them.

5. The rigid catenary disconnection device according to claim 1 or 2, characterized in that, The length of the third bus bar (3) is greater than the length of the fourth bus bar (4).

6. The rigid catenary disconnection device according to claim 1 or 2, characterized in that The first bus bar (1) and the third bus bar (3) are electrically connected by a first flexible electrical connection band (18). The second bus bar (2) and the fourth bus bar (4) are electrically connected by a second flexible electrical connection band (19).

7. The rigid catenary disconnection device according to claim 1 or 2, characterized in that, The opening and closing wire clamp (7) includes a bottom plate (71), clamping jaws (72) hinged on both sides of the bottom plate (71), and a guide post (73) passing through the center of the bottom plate (71). A pair of connecting bars (74) are hinged to the bottom of the guide post (73). The other ends of the pair of connecting bars (74) are respectively hinged to the corresponding clamping jaws (72). When the guide post (73) moves relative to the bottom plate (71), the clamping jaws (72) can rotate around the bottom plate (71).

8. The rigid catenary disconnection device according to claim 7, characterized in that, An elastic member (75) is sleeved outside the guide post (73). One end of the elastic member (75) acts on the guide post (73), and the other end acts on the bottom plate (71). The elastic member (75) makes the clamping jaws (72) always have a tendency to rotate around the bottom plate (71) and close.

9. The rigid catenary disconnection device according to claim 7, characterized in that, A first driver (20) is fixedly connected to the cantilever (6). A connecting rod is fixedly connected to the output shaft of the first driver (20). A triangular plate is provided on the cantilever (6). The first angle of the triangular plate is hinged to the cantilever (6), the second angle is hinged to the top of the guide post (73), and the third angle is hinged to one end of the connecting rod. The first driver (20) can drive the triangular plate to rotate around the cantilever (6) through the connecting rod, driving the guide post (73) to move relative to the bottom plate (71).

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