A double-wire catenary suspension device in a tunnel

Abstract

The application relates to a double-wire suspension device of a catenary in a tunnel, belonging to the technical field of tunnel catenary installation, which comprises a suspension device in the shape of a herringbone, the suspension device comprising a suspension piece, a hanging ring, a rod-shaped suspension composite insulator, a dropline and a positioning wire clamp, the suspension piece being used for being fixed on a tunnel top wall and used for suspending and pulling the hanging ring, the hanging ring being provided with two and arranged in the shape of a herringbone, the rod-shaped suspension composite insulator being fixedly arranged on the hanging ring, the dropline being arranged at the end of the rod-shaped suspension composite insulator and used for connecting the positioning wire clamp, and the positioning wire clamp being used for clamping a contact wire. The application has the effect of facilitating electrification reconstruction for a low-clearance tunnel.

Description

Technical Field

[0001] This application relates to the field of tunnel catenary installation technology, and in particular to a double conductor suspension device for catenary in tunnels. Background Technology

[0002] The overhead contact system consists of several parts, including the contact suspension, support device, positioning device, support column, and foundation.

[0003] Currently, patent application document CN222372721U discloses a tunnel contact network suspension device, including a top frame, a crossbar, and a suspension rod. The top frame is used to connect to the top of the tunnel; the crossbar is connected to the bottom of the top frame, and two screws are slidably arranged at the bottom of the crossbar; the suspension rod has strip holes on both sides, and the suspension rod is connected to the two screws through the two strip holes respectively. This application, by slidably connecting two screws below the crossbar, allows the suspension rod for installing insulators to be connected to the screws through the strip holes on its side, thereby enabling adjustment of the horizontal position, height position, and sway angle of the insulators and clamps.

[0004] However, with the acceleration of railway electrification, the number of electrification retrofit projects for existing lines is increasing. Among them, the electrification retrofit of low-clearance tunnels is often difficult to implement using traditional overhead contact line suspension methods due to the limited space inside the tunnel. Utility Model Content

[0005] To facilitate electrification retrofitting of tunnels with low clearance, this application provides a double-conductor suspension device for the overhead contact line in tunnels.

[0006] The technical solution for the double conductor suspension device for overhead contact lines in tunnels provided in this application is as follows:

[0007] A suspension device for a double conductor of a contact network in a tunnel includes a herringbone-shaped suspension device. The suspension device includes a suspension member, a hanging ring, a rod-shaped suspension composite insulator, a dropper, and a positioning clamp. The suspension member is used to fix to the tunnel roof and to suspend the hanging ring. Two hanging rings are provided and arranged in a herringbone shape. The rod-shaped suspension composite insulator is fixedly mounted on the hanging ring. The dropper is located at the end of the rod-shaped suspension composite insulator and is used to connect to the positioning clamp. The positioning clamp is used to hold the contact wire.

[0008] Optionally, the suspension component includes a fixed bracket, a sliding tube, and a sliding ring. The fixed bracket is fixedly installed at the top of the tunnel. There are two fixed brackets that are separated from each other. The length direction of the sliding tube is parallel to the length direction of the tunnel. The sliding tube is installed between the two fixed brackets. The sliding ring is installed on the sliding tube. The hanging ring is installed on the sliding ring and is symmetrically arranged along the sliding ring.

[0009] Optionally, the sliding ring is slidably disposed on the sliding tube, and the sliding ring slides along the length direction of the sliding tube.

[0010] Optionally, the hanging ring includes a U-shaped buckle and a fixing pin. The middle part of the U-shaped buckle is suspended on the sliding ring. One end of the rod-shaped suspension composite insulator is located inside the U-shaped buckle. The fixing pin enters the U-shaped buckle from the outside and passes through the connection hole of the rod-shaped suspension composite insulator.

[0011] Optionally, two U-shaped buckles are provided between the end of the rod-shaped suspension composite insulator and the positioning clamp. The suspension string is located between the two U-shaped buckles and is used to connect the two U-shaped buckles. The U-shaped buckles on both sides are respectively connected to the positioning clamp and the rod-shaped suspension composite insulator.

[0012] Optionally, a positioning element may also be included, which is used to apply lateral tension to the contact wire to ensure stable installation of the contact wire.

[0013] Optionally, the positioning component includes a positioning base, a positioning toothed seat, a rod-shaped suspension positioning composite insulator, a positioning tube, a support, and a positioning clamp. The base is used to fix it to the inner wall of the tunnel. The positioning toothed seat is disposed on the base. The rod-shaped suspension positioning composite insulator is disposed on the positioning toothed seat. The positioning tube is coaxially disposed on the rod-shaped suspension positioning composite insulator. The clamp is disposed on the positioning tube. The positioning clamp is disposed on the long clamp for clamping the contact wire.

[0014] Optionally, the suspension device and the positioning element work together or act alone on the contact wire to support it.

[0015] Optionally, when the contact line is in a curved section, the contact line can be deflected by the suspension device and the positioning element.

[0016] Optionally, the suspension device and positioning component are made of Q235B metal, hot-dip galvanized for corrosion protection.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] 1. The "V-shaped" suspension point enables the suspension of the double conductors, ensuring the stability and tension balance of the conductors within the tunnel, and maintaining a suitable sag of the conductors at all times. This ensures stable contact pressure between the pantograph and the conductors, improving the reliability and efficiency of power transmission. Furthermore, the "V-shaped" suspension point increases the height of the contact wire while reducing the height of the suspension device, facilitating the electrification retrofitting of tunnels with low clearance. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the suspension device in a double conductor suspension device for a contact network in a tunnel, according to an embodiment of this application.

[0020] Figure 2 This is a side view of the suspension device in a double conductor suspension device for a contact network in a tunnel, according to an embodiment of this application.

[0021] Figure 3 This is a schematic diagram of the positioning component in a double conductor suspension device for a contact network inside a tunnel, according to an embodiment of this application.

[0022] Figure 4 This is an enlarged view of the positioning component in a double conductor suspension device for a contact network inside a tunnel, according to an embodiment of this application.

[0023] Figure 5 This is a schematic diagram of the structure of a double conductor suspension device for a contact network in a tunnel, according to an embodiment of this application.

[0024] Explanation of reference numerals in the attached drawings: 1. M16 torque-controlled adhesive anchor bolt; 2. Fixed bracket; 3. Sliding tube; 4. Sliding ring; 5. Hanging ring; 51. U-shaped buckle; 52. Fixing pin; 6. Rod-shaped suspension composite insulator; 7. Drop string; 8. Positioning clamp; 9. Positioning base; 10. Positioning tooth seat; 11. Positioning tube; 12. Support. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0026] This application discloses a double-conductor suspension device for overhead contact lines in tunnels. (Refer to...) Figure 1 and Figure 2 The overhead contact line double conductor suspension device in the tunnel includes a herringbone-shaped suspension device. The suspension device includes a suspension component, a hanging ring 5, a rod-shaped suspension composite insulator 6, a dropper 7, and a positioning clamp 8. The suspension component is used to fix to the tunnel top wall and to suspend the hanging ring 5. There are two hanging rings 5 ​​arranged in a herringbone shape. The rod-shaped suspension composite insulator 6 is fixedly installed on the hanging ring 5. The dropper 7 is installed at the end of the rod-shaped suspension composite insulator 6 and is used to connect to the positioning clamp 8. The positioning clamp 8 is used to hold the contact wire.

[0027] The "V-shaped" suspension point enables the suspension of the double conductors, ensuring the stability and tension balance of the conductors within the tunnel. This allows the conductors to maintain a suitable sag, thereby guaranteeing stable contact pressure between the pantograph and the conductors and improving the reliability and efficiency of power transmission. Furthermore, the "V-shaped" suspension point increases the height of the contact wire while reducing the height of the suspension device, facilitating electrification upgrades in low-clearance tunnels.

[0028] Reference Figure 1 and Figure 2In this embodiment of the application, the suspension component includes a fixed bracket 2, a sliding tube 3, and a sliding ring 4. The fixed bracket 2 is fixedly installed on the top of the tunnel. There are two fixed brackets 2, which are separated from each other. The length direction of the sliding tube 3 is parallel to the length direction of the tunnel. The sliding tube 3 is installed between the two fixed brackets 2. The sliding ring 4 is installed on the sliding tube 3. The hanging ring 5 is installed on the sliding ring 4 and is symmetrically arranged along the sliding ring 4.

[0029] When installing the contact wire, firstly, the fixed bracket 2 is fixed to the top of the tunnel using M16 torque-controlled adhesive anchor bolts 1. Then, the sliding pipe 3 is installed on the fixed bracket 2. At this time, the sliding ring 4 is passed through the sliding pipe 3. Then, the hanging ring 5 is fixed on the sliding ring 4. Then, the rod-shaped suspension composite insulator 6 is connected to the hanging ring 5. Then, the positioning clamp 8 is fixed by the hanging ring 5 and the suspension wire 7. Finally, the contact wire is clamped on the positioning clamp 8, thus completing the suspension of the contact wire.

[0030] Reference Figure 1 and Figure 2 In this embodiment of the application, in order to facilitate the adjustment of the position of the sliding ring 4 on the sliding tube 3 and adapt to the position of the contact line, the sliding ring 4 is slidably disposed on the sliding tube 3 and slides along the length direction of the sliding tube 3.

[0031] Reference Figure 1 and Figure 2 In this embodiment, the hanging ring 5 includes a U-shaped buckle 51 and a fixing pin 52. The middle part of the U-shaped buckle 51 is suspended on the sliding ring 4. One end of the rod-shaped suspension composite insulator 6 is located inside the U-shaped buckle 51. The fixing pin 52 enters the U-shaped buckle 51 from the outside and passes through the connection hole of the rod-shaped suspension composite insulator 6. The rod-shaped suspension composite insulator 6 is connected by the U-shaped buckle 51 and the fixing pin 52, which is simple and convenient to operate.

[0032] Reference Figure 1 and Figure 2 To facilitate the connection between the rod-shaped suspension composite insulator 6 and the positioning clamp 8, two U-shaped buckles 51 are provided between the end of the rod-shaped suspension composite insulator 6 and the positioning clamp 8. The suspension string 7 is located between the two U-shaped buckles 51 and is used to connect the two U-shaped buckles 51. The U-shaped buckles 51 on both sides are connected to the positioning clamp 8 and the rod-shaped suspension composite insulator 6 respectively.

[0033] Reference Figure 3 and Figure 4When the contact wire is installed on the suspension device, the pantograph is in contact with the contact wire and is running, which can easily cause the contact wire to shake significantly, resulting in poor contact between the pantograph and the contact wire. Therefore, in this embodiment, a positioning component is also included. The positioning component is used to apply lateral tension to the contact wire to stabilize its installation. The positioning component includes a positioning base 9, a positioning tooth seat 10, a rod-shaped suspension positioning composite insulator, a positioning tube 11, a support 12, and a positioning clamp 8. The base is used to fix the contact wire to the inner wall of the tunnel. The positioning tooth seat 10 is set on the base. The rod-shaped suspension positioning composite insulator is set on the positioning tooth seat 10. The positioning tube 11 is coaxially set on the rod-shaped suspension positioning composite insulator. The clamp is set on the positioning tube 11. The positioning clamp 8 is set on the long clamp and is used to clamp the contact wire.

[0034] Reference Figure 3 and Figure 4 After the contact wire is installed on the suspension device, the positioning base 9 is fixed to the tunnel by M16 torque-controlled adhesive anchor bolts 1 and is located on one side of the contact wire. Then, the positioning tooth seat 10 is installed on the positioning base 9, and the rod-shaped suspension positioning composite insulator, positioning tube 11, support 12 and positioning clamp 8 are connected in sequence. Then, the contact wire is clamped in the positioning clamp 8 and the contact wire is pulled laterally, which reduces the possibility of contact wire shaking.

[0035] Reference Figure 5 In this embodiment, the suspension device and positioning element work together or act alone on the contact wire to erect it. For example, a two-span-one-positioning or three-span-one-positioning method is used in straight sections, and a two-span-one-positioning method is used in curved sections. The distance between positioning points is no more than 30m. When the contact wire is in a curved section, the suspension device and positioning element are used to steer the contact wire.

[0036] In this embodiment, the metal parts of the suspension device and positioning element are made of Q235B steel and are hot-dip galvanized for corrosion protection.

[0037] The implementation principle of a double-conductor suspension device for overhead contact lines in a tunnel according to an embodiment of this application is as follows:

[0038] The "V-shaped" suspension point enables the suspension of the double conductors, ensuring the stability and tension balance of the conductors within the tunnel. This allows the conductors to maintain a suitable sag, thereby guaranteeing stable contact pressure between the pantograph and the conductors and improving the reliability and efficiency of power transmission. Furthermore, the "V-shaped" suspension point increases the height of the contact wire while reducing the height of the suspension device, facilitating electrification upgrades in low-clearance tunnels.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A double-conductor suspension device for overhead contact lines in tunnels, characterized in that: The device includes a herringbone-shaped suspension system, which includes a suspension element, a hanging ring (5), a rod-shaped suspension composite insulator (6), a dropper (7), and a positioning clamp (8). The suspension element is used to fix the device to the tunnel roof and to suspend the hanging ring (5). There are two hanging rings (5) arranged in a herringbone pattern. The rod-shaped suspension composite insulator (6) is fixedly mounted on the hanging ring (5). The dropper (7) is located at the end of the rod-shaped suspension composite insulator (6) and is used to connect to the positioning clamp (8). The positioning clamp (8) is used to hold the contact wire.

2. The double conductor suspension device for overhead contact lines in a tunnel according to claim 1, characterized in that: The suspension component includes a fixed bracket (2), a sliding tube (3), and a sliding ring (4). The fixed bracket (2) is fixedly installed on the top of the tunnel. There are two fixed brackets (2) installed separately. The length direction of the sliding tube (3) is parallel to the length direction of the tunnel. The sliding tube (3) is installed between the two fixed brackets (2). The sliding ring (4) is installed on the sliding tube (3). The hanging ring (5) is installed on the sliding ring (4) and is symmetrically arranged along the sliding ring (4).

3. The double conductor suspension device for overhead contact lines in a tunnel according to claim 2, characterized in that: The sliding ring (4) is slidably disposed on the sliding tube (3), and the sliding ring (4) slides along the length direction of the sliding tube (3).

4. The double conductor suspension device for overhead contact lines in a tunnel according to claim 2, characterized in that: The hanging ring (5) includes a U-shaped buckle (51) and a fixing pin (52). The middle part of the U-shaped buckle (51) is suspended on the sliding ring (4). One end of the rod-shaped suspension composite insulator (6) is located inside the U-shaped buckle (51). The fixing pin (52) enters the U-shaped buckle (51) from the outside and passes through the connecting hole of the rod-shaped suspension composite insulator (6).

5. A double-conductor suspension device for overhead contact lines in a tunnel according to claim 1, characterized in that: Two U-shaped buckles (51) are provided between the end of the rod-shaped suspension composite insulator (6) and the positioning clamp (8). The suspension string (7) is located between the two U-shaped buckles (51) and is used to connect the two U-shaped buckles (51). The U-shaped buckles (51) on both sides are respectively connected to the positioning clamp (8) and the rod-shaped suspension composite insulator (6).

6. A double-conductor suspension device for overhead contact lines in a tunnel according to claim 1, characterized in that: It also includes a positioning element, which is used to apply lateral tension to the contact wire to ensure stable installation of the contact wire.

7. A double-conductor suspension device for overhead contact lines in a tunnel according to claim 6, characterized in that: The positioning components include a positioning base (9), a positioning tooth seat (10), a rod-shaped suspension positioning composite insulator, a positioning tube (11), a support (12), and a positioning clamp (8). The base is used to fix the device to the inner wall of the tunnel. The positioning tooth seat (10) is set on the base. The rod-shaped suspension positioning composite insulator is set on the positioning tooth seat (10). The positioning tube (11) is coaxially set on the rod-shaped suspension positioning composite insulator. The support (12) is set on the positioning tube (11). The positioning clamp (8) is set on the support (12) and is used to clamp the contact wire.

8. A double-conductor suspension device for overhead contact lines in a tunnel according to claim 6, characterized in that: The suspension device and positioning element work together or act alone on the contact wire to erect the contact wire.

9. A double-conductor suspension device for overhead contact lines in a tunnel according to claim 8, characterized in that: When the contact line is in a curved section, the contact line is deflected by the suspension device and the positioning element.

10. A double-conductor suspension device for overhead contact lines in a tunnel according to claim 7, characterized in that: The suspension device and positioning components are made of Q235B metal and are hot-dip galvanized for corrosion protection.

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