Electric connection device of triangular support structure

Abstract

The invention provides an electric connection device of a triangular supporting structure. The electric connection device comprises an electric connection wire, a carrier cable electric connection wire clamp, an electric connection supporting wire clamp and a contact wire electric connection wire clamp. The electric connecting wires comprise a C-shaped electric connecting wire and an extended electric connecting wire. The electric connecting wire is extended and bent back to form a triangular supporting structure with the original C-shaped electric connecting wire, and the carrier cable clamp and the electric connecting supporting wire clamp are added in the triangular supporting structure to enhance the overall stability, so that the stress condition of the carrier cable clamp can be effectively improved, the stress can be effectively dispersed and reduced, the deformation risk is avoided, and the service life of the cable is prolonged. The stability and reliability of the electric connection device are effectively improved, and a powerful guarantee is provided for power transmission and distribution of a railway contact network system.

Description

Technical Field

[0001] The present invention relates to the field of catenary systems for high-speed electrified railways, and particularly to an electrical connection device with a triangular support structure. Background Art

[0002] The catenary of high-speed railways is a special form of transmission line erected above the railway line to supply power to electric locomotives. It consists of a contact suspension, a support device, a positioning device, a pillar and a foundation. The contact suspension includes a contact wire, a suspension string, a carrier cable and connecting parts. The contact suspension is erected on the pillar through the support device, and its function is to transmit the electric energy obtained from the traction substation to the electric locomotive. The support device is used to support the contact suspension and transfer its load to the pillar or other buildings.

[0003] Currently, in some electrical connection devices, the electrical connection wire is fixed at both ends and arranged in a suspended manner in the middle. As Figure 1 shown, the carrier cable and the contact wire are arranged vertically. One end of the electrical connection wire is positioned with the carrier cable through a clamp, and the other end is positioned with the contact wire through a clamp. In the existing electrical connection device, due to vibrations and strong winds in the working environment, there are problems of up-and-down jitter and left-and-right swing of the electrical connection wire, resulting in frequent irregular stresses on the clamps at both ends, affecting the service life of the parts and the stability of the system. As Figure 2 shown, the existing solution is to additionally install an auxiliary connection wire. One end of the auxiliary connection wire is positioned with the carrier cable through a clamp, and the other end is positioned with the electrical connection wire through a clamp. The support and positioning of the electrical connection wire are achieved through the auxiliary connection wire. However, in the use of this structure, the clamps between the carrier cable and the electrical connection wire and between the carrier cable and the auxiliary connection wire still bear relatively large stresses, and are prone to significant deformation during use, which may pose a threat to the stability of the device and the safe operation of the system.

[0004] Meanwhile, as Figure 2 shown, in the existing electrical connection device, the setting direction of the electrical connection support clamp is inclined in the vertical direction. During the long-term operation process, due to the lifting of the lower wires caused by the passing of the train, there will be a run-off between the electrical connection wire and the clamp, which will cause wear of the clamp and the electrical connection wire during long-term application, reduce the stability of the electrical connection device, and pose a potential safety hazard. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: in order to overcome the deficiencies of the prior art, the present invention provides an electrical connection device with a triangular support structure, which has a reasonable structural design, significantly improves the stress condition of the carrier cable clamp, effectively disperses and reduces the stress, avoids the risk of deformation, ensures the structural integrity of the electrical connection device during the long-term operation process by using the triangular support structure, improves the 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 the present invention to solve its technical problems is as follows: An electrical connection device with a triangular support structure is arranged between the catenary and the contact wire, and includes 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-shaped electrical connection wire and an extended electrical connection wire; the lower end of the C-shaped electrical connection wire is fixedly positioned with the contact wire through the contact wire electrical connection clamp; the extended electrical connection wire is connected to the upper end of the C-shaped electrical connection wire, bent and then bent back to the connection end and fixedly positioned with the C-shaped electrical connection wire through the electrical connection support clamp. The bending direction of the extended electrical connection wire is opposite to that of the C-shaped electrical connection wire, and the extended electrical connection wire is fixedly positioned with the catenary through the catenary electrical connection clamp.

[0007] In the above solution, based on the C-shaped 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-shaped electrical connection wire. The extended electrical connection wire is bent and bent back for positioning, which is equivalent to extending the C-shaped connection wire upward and winding it back to form a roughly triangular extended support structure. This structure can effectively disperse and reduce stress, effectively improve the stress condition of the catenary electrical connection clamp, and avoid the risk of deformation.

[0008] Further, the number of the catenary electrical connection clamps is at least two. The connection lines of the catenary electrical connection clamps at both ends and the contact wire electrical connection clamp form a triangle, and the electrical connection support clamp is located within this triangle. The catenary electrical connection clamp and the contact wire electrical connection clamp form a triangular support structure, and the catenary electrical connection clamp and the electrical connection support clamp also form a triangular support structure, forming triangular connection points at the clamp positions, further improving the stress 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] Further, the electrical connection support clamp is arranged horizontally at 180°. When vibrating, the load is offset by the elastic deformation of the electrical connection wire, thereby avoiding the relative movement of the electrical connection wires on both sides of the electrical connection support clamp and avoiding the wear of the clamp and the electrical connection wire during long-term application, and further improving the stability and reliability of the overall electrical connection device.

[0010] Further, the number of the catenary electrical connection clamps is two. The triangle formed by the connection lines of the catenary electrical connection clamps and the contact wire electrical connection clamp is an isosceles triangle. The catenary electrical connection clamps are located at the base angles of the isosceles triangle, the contact wire electrical connection clamp is located at the apex angle of the isosceles triangle, and the electrical connection support clamp is 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 line of the base. In the spatial position of the isosceles triangle formed by the connection line between the catenary electrical connection clamp and the contact wire electrical connection clamp, the electrical connection support clamp is not only located in the middle horizontally, but also in the upper one-third vertically, making the upper half of the overall electrical connection short and the lower half long. When the long lower half bears vibration, it can bend to avoid local hard points, reducing the impact and damage to the train pantograph; the short upper half forms a loop presenting an approximate circular ring structure. Whether under tensile load or compressive load, the loop structure can evenly distribute stress, and when bearing an extremely large load, the loop structure can show great advantages.

[0012] Preferably, the connection line between the catenary electrical connection clamp and the contact wire electrical connection clamp forms an isosceles triangle with a vertex angle of 24° and base angles of 78°.

[0013] Furthermore, the C-shaped electrical connection wire and the extended electrical connection wire are of an integral structure, and the electrical connection support clamp is the demarcation point between the C-shaped electrical connection wire and the extended electrical connection wire.

[0014] Preferably, the catenary electrical connection clamp includes a clamp body and a pressing block.

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

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

[0017] The beneficial effects of the present invention are as follows: The electrical connection device with a triangular support structure provided by the present invention has a reasonable structural design. On the basis of the original electrical connection wire, the electrical connection wire is extended and bent back to form a triangular support structure with the original C-shaped electrical connection wire. In the triangular support structure, a catenary wire clamp and an electrical connection support clamp are added to enhance the overall stability, which can effectively improve the stress condition of the catenary wire clamp, effectively disperse and reduce stress, and avoid the risk of deformation. The electrical connection device with a triangular support structure ensures 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following further describes the present invention with reference to the drawings and embodiments.

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

[0020] Figure 2 is a schematic structural diagram of an electrical connection device with an additional auxiliary connection wire.

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

[0022] Figure 4 It is a schematic connection diagram of the distribution of each wire clamp in the embodiment of the present invention.

[0023] Figure 5 It is a partial enlarged view at the position of the electrical connection support wire clamp in the embodiment of the present invention.

[0024] In the figure, 1 is the carrier cable, 2 is the carrier cable electrical connection wire clamp, 3 is the electrical connection support wire clamp, 4 is the contact wire electrical connection wire clamp, 5 is the electrical connection wire, 5-1 is the C-shaped electrical connection wire, 5-2 is the extended electrical connection wire, 6 is the contact wire, and 7 is the auxiliary connection wire. Specific Embodiments

[0025] Now, the present invention will be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present invention in a schematic manner. Therefore, they only show the components related to the present invention, and directions and references (such as up, down, left, right, etc.) can only be used to assist in the description of the features in the drawings. Therefore, the following specific embodiments are not adopted in a restrictive sense, and the scope of the claimed subject matter is only defined by the appended claims and their equivalent forms.

[0026] Embodiment 1:

[0027] As Figure 3 shown, an electrical connection device with a triangular support structure is Embodiment 1 of the present invention. This electrical connection device is arranged between the carrier cable 1 and the contact wire 6, and includes an electrical connection wire, two carrier cable electrical connection wire clamps 2, one electrical connection support wire clamp 3, and one contact wire electrical connection wire clamp 4.

[0028] Specifically, the electrical connection wire in this embodiment includes an integrated C-shaped electrical connection wire and an extended electrical connection wire, and the extended electrical connection wire is connected to the upper end of the C-shaped electrical connection wire. The electrical connection support wire clamp 3 is the demarcation point between the C-shaped electrical connection wire and the extended electrical connection wire. The extended electrical connection wire located above is bent and then bent back to the connection end and is positioned and fixed to the C-shaped electrical connection wire through the electrical connection support wire clamp 3. The lower end of the C-shaped electrical connection wire is positioned and fixed to the contact wire 6 through the contact wire electrical connection wire clamp 4. The bending direction of the extended electrical connection wire is opposite to that of the C-shaped electrical connection wire, and the extended electrical connection wire is positioned and fixed to the carrier cable 1 through two spaced-apart carrier cable electrical connection wire clamps 2.

[0029] In the first embodiment, the loop structure formed by the extended electrical connection wire 5-2 is located above the electrical connection support wire clamp 3, which is designed according to the structure of the catenary. Below the catenary is the pantograph of the high-speed railway locomotive. If the catenary below is too long, it may cause pantograph hitting, posing a safety hazard. Therefore, in this embodiment, the loop formed by bending is set above the electrical connection support wire clamp 3, and the loop structure is formed by bending back from above the electrical connection support wire clamp 3.

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

[0031] The catenary electrical connection wire clamp 2 and the electrical connection support wire clamp 3 adopt the same structure, and are both fixed by crimping the wire clamp body and the pressing block on site. The contact wire electrical connection wire clamp 4 includes a wire clamp body and a threaded clamp, and the wire clamp body and the threaded clamp are installed and fixed on site.

[0032] In this embodiment, compared with the traditional electrical connection structure, on the basis of the traditional C-shaped electrical connection wire, the upper end of the C-shaped electrical connection wire is extended and bent reversely to form an extended electrical connection wire, and the electrical connection support wire clamp 3 is set to fix the end of the extended electrical connection wire that is bent back. During the extension and bending back of the electrical connection wire, two catenary electrical connection wire clamps 2 and the electrical connection support wire clamp 3 are arranged at intervals. The three wire clamps, together with the corresponding catenary 1 and the extended electrical connection wire, form a triangular support structure. On the basis of the C-shaped 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-shaped electrical connection wire. The extended electrical connection wire is bent and bent back for positioning, which is equivalent to extending the C-shaped connection wire upward and winding it to form a roughly triangular extended support structure. This structure can effectively disperse and reduce stress, and effectively improve the stress condition of the catenary electrical connection wire clamp 2.

[0033] Embodiment Two:

[0034] As Figure 4 shown, an electrical connection device with a triangular support structure is Embodiment Two of the present invention. On the basis of Embodiment One, Embodiment Two further limits the position distribution of the catenary electrical connection wire clamp 2, the electrical connection support wire clamp 3, and the contact wire electrical connection wire clamp 4.

[0035] Specifically, the triangle formed by the connection line between the catenary electrical connection clamp 2 and the contact wire electrical connection clamp 4 is an isosceles triangle. The apex angle of this isosceles triangle is 24°, and the base angles are 78°. The catenary electrical connection clamp 2 is located at the position of the base angle of the isosceles triangle, and the contact wire electrical connection clamp 4 is located at the position of the apex angle of the isosceles triangle. The electrical connection support clamp 3 is located on the midline of the base of the isosceles triangle. The distance from the electrical connection support clamp 3 to the base of the isosceles triangle is 1 / 3 of the length of the base midline.

[0036] In the second embodiment, the spatial distribution of the triangle formed by the clamps is further optimized into an isosceles triangle, which can make the overall electrical connection device have balanced force and uniform stress distribution, improving the overall stability and reliability. In the spatial position of the isosceles triangle formed by the connection line between the catenary electrical connection clamp 2 and the contact wire electrical connection clamp 4, the electrical connection support clamp 3 is not only located in the middle horizontally, but also located at the upper one-third longitudinally, realizing that the upper half of the overall electrical connection line is short and the lower half is long. When the long lower half bears vibration, it can bend to avoid local hard points and reduce the impact and damage to the train pantograph; the short upper half forms a loop presenting an approximately circular ring structure. Whether it bears tensile load or compressive load, the loop structure can evenly distribute stress, and when bearing an extremely large load, the loop structure can show great advantages.

[0037] Embodiment Three:

[0038] As Figure 3 and Figure 5 shown, an electrical connection device with a triangular support structure is Embodiment Three of the present invention. Based on Embodiment Two, Embodiment Three further limits the position distribution of the electrical connection support clamp 3.

[0039] Specifically, the electrical connection support clamp 4 is arranged horizontally at 180°. Different from the vertical / oblique setting adopted in traditional electrical connection devices, the electrical connection support clamp 4 in Embodiment Three is arranged horizontally. When subjected to vibration, the load is offset by the elastic deformation of the electrical connection wire, thereby avoiding the relative displacement of the electrical connection wires on both sides of the electrical connection support clamp 4 and avoiding the wear of the clamp and the electrical connection wire during long-term application, further improving the stability and reliability of the overall electrical connection device.

[0040] The electrically connected device with a triangular support structure designed in this way has the characteristics of stable structure, balanced stress state, simplified installation steps, etc. compared with traditional electrically connected devices. Through the electrical connection support wire clamp 3 in the upper-middle part, the electrical connection wire presents an inverted delta shape. The electrical connection wire is an integral whole. When bearing lateral wind loads, it has the advantages of high robustness and uniform stress compared with traditional electrically connected devices; the lower half of the electrical connection wire is a semi-circular shape with a large bending degree. When the catenary vibrates due to the passing of a high-speed train, the high elasticity of the lower half of the electrical connection wire can avoid the occurrence of local hard points and reduce the impact and damage to the pantograph of the train; while the upper half of the electrical connection wire is a loop. When the load caused by the vibration of the contact wire is conducted to the upper half, whether it is tension or compression, the loop structure can evenly distribute the stress, improve the stability and fatigue life of the overall electrically connected device. In addition, when the electrically connected device bears extremely large loads, the loop structure has great advantages compared with the traditional arrangement method of electrical connection wires; the electrical connection wire is fixed through the horizontally arranged electrical connection support wire clamp 4 in the upper-middle part. Compared with the arrangement scheme of the electrical connection support wire clamp in the traditional electrically connected device, when subjected to vibration, the load is offset by the elastic deformation of the electrical connection wire. In the traditional arrangement scheme of the electrical connection support wire clamp, the electrical connection wires on both sides will move relatively, which will cause wear of the wire clamp and the electrical connection wire during long-term application, reduce the stability of the electrically connected device, and pose a potential safety hazard.

[0041] The performance of the traditional electrically connected device and this embodiment is compared through ANSYS simulation analysis. The analysis results show that in the traditional structure, significant deformation occurs at the clamp part of the carrier cable 1 due to the large stress it bears, which may pose a threat to the stability of the device and the safe operation of the system. In contrast, through optimized design, this embodiment significantly improves the stress condition of the clamp of the carrier cable 1, effectively disperses and reduces the stress, and avoids the risk of deformation. The electrically connected device with a triangular support structure ensures the structural integrity of the electrically connected device during long-term operation, improves the stability and reliability, and provides a strong guarantee for the power transmission and distribution of the railway catenary system.

[0042] Taking the ideal embodiment of the present invention described above as an inspiration, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An electrical connection device of a triangular support structure, arranged between a load-bearing cable (1) and a contact wire (6), characterized in that: It comprises an electrical connection wire (5), a load-bearing cable electrical connection wire clamp (2), an electrical connection support wire clamp (3) and a contact wire electrical connection wire clamp (4); The electrical connection wires include a C-type electrical connection wire (5-1) and an extended electrical connection wire (5-2); The lower end of the C-shaped electrical connection wire (5-1) is positioned and fixed with the contact wire (6) via a contact wire electrical connection wire clamp (4); The extended electrical connection line (5-2) is connected to the upper end of the C-shaped electrical connection line (5-1), and is bent back to the connection end and positioned and fixed with the C-shaped electrical connection line (5-1) through an electrical connection support wire clamp (3). The bending direction of the extended electrical connection line (5-2) is opposite to the bending direction of the C-shaped electrical connection line (5-1). The extended electrical connection line (5-2) and the load-bearing cable (1) are positioned and fixed through the load-bearing cable electrical connection wire clamp (2).

2. An electrical connection device of a triangular support structure as claimed in claim 1, characterized in that: The number of the load-bearing cable electrical connection clamps (2) is at least two, and the load-bearing cable electrical connection clamps (2) at both ends are connected with the contact wire electrical connection clamps (4) to form a triangle, and the electrical connection support clamp (3) is located within the triangle.

3. An electrical connection device of a triangular support structure as claimed in claim 2, characterized in that: The electrical connection support wire clamp (3) is arranged horizontally at an angle of 180°.

4. An electrical connection device of a triangular support structure as claimed in claim 2, characterized in that: The number of the load-bearing cable electrical connection clamps (2) is two, and the triangle formed by the connection of the load-bearing cable electrical connection clamps (2) and the contact line electrical connection clamps (4) is an isosceles triangle. The load-bearing cable electrical connection clamps (2) are located at the base angle of the isosceles triangle, the contact line electrical connection clamps (4) are located at the vertex 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. An electrical connection device of a triangular support structure as claimed in claim 4, characterized in that: The distance between the electrical connection support wire clamp (3) and the base of the isosceles triangle is 1 / 3 of the length of the midline of the base.

6. An electrical connection device of a triangular support structure as claimed in claim 4, characterized in that: The connecting line of 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. An electrical connection device of a triangular support structure as claimed in claim 1, characterized in that: The C-shaped electrical connection line (5-1) and the extended electrical connection line (5-2) are an integrated structure, and the electrical connection support wire clamp (3) is the dividing point between the C-shaped electrical connection line (5-1) and the extended electrical connection line (5-2).

8. An electrical connection device of a triangular support structure as claimed in claim 1, characterized in that: The load-bearing cable electrical connection clamp (2) comprises a clamp body and a pressing block.

9. An electrical connection device of a triangular support structure as claimed in claim 1, characterized in that: The electrical connection support wire clamp (3) comprises a wire clamp body and a pressing block.

10. An electrical connection device of a triangular support structure according to claim 1, characterized in that: The contact line electrical connection clamp (4) comprises a clamp body and a threaded clip.

Images