Electrical connection device for a delta support structure

Abstract

This invention provides an electrical connection device with a triangular support structure, including an electrical connection wire, a catenary electrical connection clamp, an electrical connection support clamp, and a contact wire electrical connection clamp; the electrical connection wire includes a C-type electrical connection wire and an extended electrical connection wire. This invention extends and bends the electrical connection wire to form a triangular support structure with the original C-type electrical connection wire. Adding catenary clamps and electrical connection support clamps to the triangular support structure enhances overall stability, effectively improves the stress condition of the catenary clamp, effectively disperses and reduces stress, avoids deformation risks, and effectively improves the stability and reliability of the electrical connection device, providing strong support for power transmission and distribution in railway contact network systems.

Description

Technical Field

[0001] This invention relates to the field of overhead contact system for high-speed electrified railways, and more particularly to an electrical connection device with a triangular support structure. Background Technology

[0002] The overhead contact system of a high-speed railway is a special type of power transmission line that runs along the railway line to supply power to electric locomotives. It consists of several parts: contact suspension, support devices, positioning devices, supports, and foundations. The contact suspension includes the contact wire, droppers, catenary wire, and connecting parts. The contact suspension is erected on the supports via support devices, and its function is to transmit electrical energy obtained from the traction substation to the electric locomotives. The support devices support the contact suspension and transfer its load to the supports or other structures.

[0003] Currently, some electrical connection devices have electrical connection wires fixed at both ends and suspended in the middle. For example... Figure 1 As shown, the catenary and contact wire are arranged vertically. One end of the electrical connector is positioned with the catenary via a clamp, and the other end is positioned with the contact wire via a clamp. In existing electrical connection devices, due to vibrations and strong winds in the working environment, the electrical connector experiences vertical shaking and lateral swaying, causing frequent irregular stresses on the clamps at both ends, affecting the service life of components and the stability of the system. Figure 2 As shown, the existing solution involves adding an auxiliary connecting wire. One end of the auxiliary connecting wire is positioned with the catenary cable via a clamp, and the other end is positioned with the electrical connecting wire via a clamp. This auxiliary connecting wire provides support and positioning for the electrical connecting wire. However, in use, the clamps between the catenary cable and the electrical connecting wire, and between the catenary cable and the auxiliary connecting wire, still bear significant stress, making them prone to significant deformation during use. This could potentially threaten the stability of the device and the safe operation of the system.

[0004] At the same time, such as Figure 2 As shown, in existing electrical connection devices, the electrical connection support clamps are arranged at an angle in the vertical direction. During long-term operation, the overhead wires are raised due to train passage, causing movement between the electrical connection wires and the clamps. Over time, this leads to wear and tear on the clamps and electrical connection wires, reducing the stability of the electrical connection device and creating potential safety hazards. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: in order to overcome the shortcomings of the prior art, the present invention provides an electrical connection device with a triangular support structure. The structure is reasonably designed, which significantly improves the stress condition of the load-bearing cable clamp, effectively disperses and reduces stress, avoids the risk of deformation, and uses the triangular support structure to ensure the structural integrity of the electrical connection device during long-term operation, improves stability and reliability, and provides a strong guarantee for the power transmission and distribution of the railway catenary system.

[0006] The technical solution adopted by this invention to solve its technical problem is: an electrical connection device with a triangular support structure, disposed between the catenary and the contact wire, including an electrical connection wire, a catenary electrical connection clamp, an electrical connection support clamp, and a contact wire electrical connection clamp; the electrical connection wire includes a C-type electrical connection wire and an extended electrical connection wire; the lower end of the C-type electrical connection wire is positioned and fixed to the contact wire by the contact wire electrical connection clamp; the extended electrical connection wire is connected to the upper end of the C-type electrical connection wire, and after bending, it bends back to the connection end and is positioned and fixed to the C-type electrical connection wire by the electrical connection support clamp, the bending direction of the extended electrical connection wire is opposite to the bending direction of the C-type electrical connection wire, and the extended electrical connection wire is positioned and fixed to the catenary by the catenary electrical connection clamp.

[0007] In the above scheme, an extension electrical connection line is connected to the upper end of the C-type electrical connection line, and the bending direction of the extension electrical connection line is opposite to that of the C-type electrical connection line. The extension electrical connection line bends and bends back for positioning, which is equivalent to extending the C-type connection line upward and wrapping it back to form an extension support structure that is roughly triangular. This structure can effectively disperse and reduce stress, effectively improve the stress condition of the load-bearing cable electrical connection clamp, and avoid the risk of deformation.

[0008] Furthermore, the number of catenary electrical connection clamps is at least two. The catenary electrical connection clamps at both ends and the contact wire electrical connection clamps form a triangle, and the electrical connection support clamp is located within this triangle. The catenary electrical connection clamps and the contact wire electrical connection clamps form a triangular support structure, and the catenary electrical connection clamps and the electrical connection support clamps also form a triangular support structure. Triangular connection points are formed at the clamp positions, further improving the stress distribution of the overall electrical connection device, effectively balancing the stress, and distributing the stress, thereby enhancing the stability and reliability of the overall electrical connection device.

[0009] Furthermore, the electrical connection support clamp is arranged horizontally at 180°. When subjected to vibration, the load is offset by the elastic deformation of the electrical connection wire, thereby avoiding relative movement of the electrical connection wires on both sides of the electrical connection support clamp, avoiding wear of the clamp and electrical connection wires caused by long-term use, and further improving the stability and reliability of the overall electrical connection device.

[0010] Furthermore, there are two catenary electrical connection clamps. The triangle formed by connecting the catenary electrical connection clamps and the contact wire electrical connection clamps is an isosceles triangle. The catenary electrical connection clamps are located at the base angles of the isosceles triangle, the contact wire electrical connection clamps are located at the apex angles of the isosceles triangle, and the electrical connection support clamps are located on the midline of the base of the isosceles triangle.

[0011] Preferably, the distance between the electrical connection support clamp and the base of the isosceles triangle is 1 / 3 of the length of the median of the base. Within the spatial position of the isosceles triangle formed by the connection between the catenary electrical connection clamp and the contact wire electrical connection clamp, the electrical connection support clamp is located not only in the middle laterally but also in the upper third longitudinally, achieving a shorter upper half and a longer lower half for the overall electrical connection. The longer lower half can bend under vibration, avoiding localized hard spots and reducing impact and damage to the train's pantograph; the shorter upper half forms an approximately circular loop structure, which can evenly distribute stress under both tensile and compressive loads, and exhibits significant advantages under extremely large loads.

[0012] Preferably, the connection between the load-bearing cable electrical connector and the contact wire electrical connector forms an isosceles triangle with a vertex angle of 24° and a base angle of 78°.

[0013] Furthermore, the C-type electrical connector and the extended electrical connector are an integral structure, and the electrical connector support clamp is the dividing point between the C-type electrical connector and the extended electrical connector.

[0014] Preferably, the load-bearing cable electrical connector clamp includes a clamp body and a pressure block.

[0015] Preferably, the electrical connection support clamp includes a clamp body and a pressure block.

[0016] Preferably, the contact wire electrical connection clamp includes a clamp body and a threaded clip.

[0017] The beneficial effects of this invention are that the triangular support structure electrical connection device provided by this invention has a reasonable structural design. Based on the original electrical connection line, the electrical connection line is extended and bent back to form a triangular support structure with the original C-shaped electrical connection line. Adding a load-bearing cable clamp and an electrical connection support clamp to the triangular support structure enhances overall stability, effectively improves the stress condition of the load-bearing cable clamp, effectively disperses and reduces stress, and avoids the risk of deformation. The triangular support structure electrical connection device ensures the structural integrity of the electrical connection device during long-term operation, improves stability and reliability, and provides strong support for power transmission and distribution in railway catenary systems. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of a traditional electrical connection device.

[0020] Figure 2 This is a schematic diagram of the electrical connection device with added auxiliary connection lines.

[0021] Figure 3 This is a structural schematic diagram of an embodiment of the present invention.

[0022] Figure 4 This is a schematic diagram showing the connections of the various clamps in an embodiment of the present invention.

[0023] Figure 5 This is a partial enlarged view of the location of the electrical connection support clamp in an embodiment of the present invention.

[0024] In the diagram: 1. Catenary wire; 2. Catenary wire electrical connection clamp; 3. Electrical connection support clamp; 4. Contact wire electrical connection clamp; 5. Electrical connection wire; 5-1. Type C electrical connection wire; 5-2. Extension type electrical connection wire; 6. Contact wire; 7. Auxiliary connection wire. Detailed Implementation

[0025] The invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention in a schematic manner. Therefore, they only show the components relevant to the invention, and the orientations and references (e.g., up, down, left, right, etc.) are only used to aid in the description of the features in the drawings. Therefore, the following specific embodiments are not intended to be restrictive, and the scope of the claimed subject matter is defined solely by the appended claims and their equivalents.

[0026] Example 1:

[0027] like Figure 3 The electrical connection device shown is an embodiment of the present invention, which is a triangular support structure. The electrical connection device is disposed between the catenary 1 and the contact wire 6, and includes an electrical connection wire, two catenary electrical connection clamps 2, an electrical connection support clamp 3, and a contact wire electrical connection clamp 4.

[0028] Specifically, the electrical connection wire in this embodiment includes an integrally structured C-type electrical connection wire and an extension electrical connection wire, with the extension electrical connection wire connected to the upper end of the C-type electrical connection wire. The electrical connection support clamp 3 serves as the boundary between the C-type and extension electrical connection wires. The extension electrical connection wire, located above, bends back to the connection end and is positioned and fixed to the C-type electrical connection wire via the electrical connection support clamp 3. The lower end of the C-type electrical connection wire is positioned and fixed to the contact wire 6 via the contact wire electrical connection clamp 4. The bending direction of the extension electrical connection wire is opposite to that of the C-type electrical connection wire, and this extension electrical connection wire is positioned and fixed to the catenary 1 via two spaced-apart catenary electrical connection clamps 2.

[0029] In Embodiment 1, the loop structure formed by the extended electrical connection wire 5-2 is located above the electrical connection support clamp 3, which is designed specifically for the wire's structure. Below the wire is the pantograph of the high-speed railway locomotive; if the wire below is too long, it could cause pantograph breakage, posing a safety hazard. Therefore, in this embodiment, the loop formed by the bend is positioned above the electrical connection support clamp 3, with the loop structure formed by bending back from above the electrical connection support clamp 3.

[0030] Specifically, in this embodiment, the C-type electrical connection wire and the extension type electrical connection wire are φ16mm soft copper stranded wires. The catenary 1 is a φ13mm copper catenary 1. The contact wire 6 is a φ13mm copper electrical connection wire.

[0031] The catenary cable electrical connection clamp 2 and the electrical connection support clamp 3 adopt the same structure, both consisting of a clamp body and a pressure block that are crimped and fixed on site. The contact wire electrical connection clamp 4 includes a clamp body and a threaded clip, which are installed and fixed on site.

[0032] In this embodiment, compared to the traditional electrical connection structure, based on the traditional C-type electrical connection wire, the upper end of the C-type electrical connection wire is extended and bent in the opposite direction to form an extended electrical connection wire, and an electrical connection support clamp 3 is set to fix the end of the bent extended electrical connection wire. During the extension and bending process of the electrical connection wire, two spaced-apart catenary electrical connection wire clamps 2 and electrical connection support clamps 3 are set. The three clamps, together with the corresponding catenary wire 1 and the extended electrical connection wire, form a triangular support structure. Based on the C-type electrical connection wire, an extended electrical connection wire is connected to its upper end, and the bending direction of the extended electrical connection wire is opposite to that of the C-type electrical connection wire. The bending and bending of the extended electrical connection wire is equivalent to extending the C-type connection wire upward and wrapping it back to form an extension support structure that is roughly triangular. This structure can effectively disperse and reduce stress, and effectively improve the stress condition of the catenary electrical connection wire clamp 2.

[0033] Example 2:

[0034] like Figure 4 The electrical connection device with a triangular support structure shown is Embodiment 2 of the present invention. Embodiment 2, based on Embodiment 1, further defines the positional distribution of the load-bearing cable electrical connection clamp 2, the electrical connection support clamp 3, and the contact wire electrical connection clamp 4.

[0035] Specifically, the triangle formed by the lines connecting the catenary cable electrical connection clamp 2 and the contact wire electrical connection clamp 4 is an isosceles triangle with a vertex angle of 24° and a base angle of 78°. The catenary cable electrical connection clamp 2 is located at one of the base angles of the isosceles triangle, and the contact wire electrical connection clamp 4 is located at one of the vertex angles. The electrical connection support clamp 3 is located on the median of the base of the isosceles triangle. The distance between the electrical connection support clamp 3 and the base of the isosceles triangle is one-third of the length of the median.

[0036] In Embodiment 2, the triangular spatial distribution formed by the clamps is further optimized into an isosceles triangle, which enables the overall electrical connection device to be force-balanced, with uniform stress distribution, thus improving overall stability and reliability. The electrical connection support clamp 3, within the isosceles triangle formed by the lines connecting the catenary electrical connection clamp 2 and the contact wire electrical connection clamp 4, is not only located in the middle laterally but also in the upper third longitudinally, achieving a shorter upper half and a longer lower half in the overall electrical connection. The longer lower half can bend under vibration, avoiding localized hard spots and reducing impact and damage to the train's pantograph; the shorter upper half loops out into an approximately circular structure, which can evenly distribute stress under both tensile and compressive loads, and exhibits significant advantages when subjected to extremely large loads.

[0037] Example 3:

[0038] like Figure 3 and Figure 5 The electrical connection device with a triangular support structure shown is Embodiment 3 of the present invention. Embodiment 3, based on Embodiment 2, further specifies the positional distribution of the electrical connection support clamps 3.

[0039] Specifically, the electrical connection support clamp 4 is arranged horizontally at 180°. Unlike the vertical / diagonal arrangement used in traditional electrical connection devices, the electrical connection support clamp 4 in Embodiment 3 is arranged horizontally. When subjected to vibration, the load is offset by the elastic deformation of the electrical connection line, thereby avoiding relative movement of the electrical connection lines on both sides of the electrical connection support clamp 4, avoiding wear of the clamp and electrical connection lines during long-term use, and further improving the stability and reliability of the overall electrical connection device.

[0040] Compared to traditional electrical connection devices, this triangular support structure offers advantages such as structural stability, balanced stress distribution, and simplified installation. The electrical connection support clamp 3 in the upper middle section shapes the electrical connection wire into an inverted delta shape, making the connection wire a single unit. This provides superior robustness and more uniform stress distribution when subjected to lateral wind loads compared to traditional devices. The lower half of the electrical connection wire is a semi-circular section with a significant bend. When a high-speed train passes and causes vibrations in the contact wire, the high elasticity of the lower half prevents localized hard spots, reducing impact and damage to the train's pantograph. Furthermore, the upper half of the electrical connection wire forms a loop. When the load caused by contact wire vibration is transmitted to the upper half, whether under tension or compression, the loop structure evenly distributes stress, improving the overall performance. The stability and fatigue life of the electrical connection device are improved. In addition, when the electrical connection device is subjected to extremely large loads, the loop structure has a great advantage over the traditional electrical connection cable arrangement. The electrical connection cable is fixed by the horizontally arranged electrical connection support clamp 4 in the upper middle part. Compared with the electrical connection support clamp arrangement in the traditional electrical connection device, when subjected to vibration, the load is offset by the elastic deformation of the electrical connection cable. In the traditional electrical connection support clamp arrangement, the electrical connection cables on both sides will move relative to each other when subjected to vibration. In long-term use, this will cause wear of the clamps and electrical connection cables, reduce the stability of the electrical connection device, and create potential safety hazards.

[0041] The performance of the traditional electrical connection device and this embodiment was compared through ANSYS simulation analysis. The analysis results show that in the traditional structure, the catenary clamp 1 experiences significant deformation due to the large stress, potentially threatening the stability of the device and the safe operation of the system. In contrast, this embodiment, through optimized design, significantly improves the stress condition of the catenary clamp 1, effectively dispersing and reducing stress, and avoiding the risk of deformation. The triangular support structure electrical connection device ensures the structural integrity of the electrical connection device during long-term operation, improves stability and reliability, and provides strong support for power transmission and distribution in the railway catenary system.

[0042] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An electrical connection device with a triangular support structure, disposed between a catenary cable (1) and a contact wire (6), characterized in that: It includes electrical connection wire (5), catenary electrical connection clamp (2), electrical connection support clamp (3) and contact wire electrical connection clamp (4); The electrical connection wires include a type C electrical connection wire (5-1) and an extension type electrical connection wire (5-2). The lower end of the C-type electrical connection wire (5-1) is positioned and fixed to the contact wire (6) by the contact wire electrical connection clamp (4); The extended electrical connector (5-2) is connected to the upper end of the C-type electrical connector (5-1), and after bending, it bends back to the connection end and is fixed to the C-type electrical connector (5-1) by the electrical connector support clamp (3). The bending direction of the extended electrical connector (5-2) is opposite to the bending direction of the C-type electrical connector (5-1). The extended electrical connector (5-2) is fixed to the catenary (1) by the catenary electrical connector clamp (2). The extended electrical connection line (5-2) forms a loop structure, which is located above the electrical connection support clamp (3).

2. The electrical connection device with a triangular support structure as described in claim 1, characterized in that: The number of the catenary electrical connection clamps (2) is at least two. The catenary electrical connection clamps (2) located at both ends and the contact wire electrical connection clamps (4) form a triangle, and the electrical connection support clamps (3) are located inside the triangle.

3. The electrical connection device with a triangular support structure as described in claim 2, characterized in that: The electrical connection support clamp (3) is arranged horizontally at 180°.

4. The electrical connection device with a triangular support structure as described in claim 2, characterized in that: There are two catenary electrical connection clamps (2). The triangle formed by connecting the catenary electrical connection clamps (2) and the contact wire electrical connection clamps (4) is an isosceles triangle. The catenary electrical connection clamps (2) are located at the base angle of the isosceles triangle, the contact wire electrical connection clamps (4) are located at the apex angle of the isosceles triangle, and the electrical connection support clamps (3) are located on the midline of the base of the isosceles triangle.

5. The electrical connection device with a triangular support structure as described in claim 4, characterized in that: The distance between the electrical connection support clamp (3) and the base of the isosceles triangle is 1 / 3 of the length of the median of the base.

6. The electrical connection device with a triangular support structure as described in claim 4, characterized in that: The line connecting the load-bearing cable electrical connection clamp (2) and the contact wire electrical connection clamp (4) forms an isosceles triangle with a vertex angle of 24° and a base angle of 78°.

7. The electrical connection device with a triangular support structure as described in claim 1, characterized in that: The C-type electrical connector (5-1) and the extended electrical connector (5-2) are an integral structure, and the electrical connector support clamp (3) is the dividing point between the C-type electrical connector (5-1) and the extended electrical connector (5-2).

8. The electrical connection device with a triangular support structure as described in claim 1, characterized in that: The load-bearing cable electrical connection clamp (2) includes a clamp body and a pressure block.

9. The electrical connection device with a triangular support structure as described in claim 1, characterized in that: The electrical connection support clamp (3) includes a clamp body and a pressure block.

10. The electrical connection device with a triangular support structure as described in claim 1, characterized in that: The contact wire electrical connection clamp (4) includes a clamp body and a threaded clip.

Images