Catenary busbar based on a flexible structure

Abstract

The present application relates to a kind of based on flexible structure's overhead line system busbar.The existing overhead line system busbar cannot solve the problem of high risk of flexible overhead line system fracture and the rigidity of overhead line system without buffering.The present application includes busbar seat, flexible card seat and cable chuck;Flexible card seat is set in pairs in the bottom surface of busbar seat, and left-right symmetric setting;The top of cable chuck is inserted into flexible card seat, and the bottom of both sides of cable chuck is inclined to the middle and has clamping groove.The present application has appropriate rigidity, can play the role of guiding cable, and prevent the up and down swing of cable, after being installed in flexible overhead line system, can effectively reduce the risk of fracture;Since flexible structure is designed, it has deformation buffering effect, after being installed in rigid overhead line system, it can reduce the impact on overhead line system and pantograph when contact changes, thereby the running speed of train limited by busbar can be greatly improved, and the wear of pantograph can also be reduced.

Description

Technical Field

[0001] This invention relates to the field of overhead contact line technology, and more specifically to an overhead contact line busbar based on a flexible structure. Background Technology

[0002] The overhead contact line, also known as the overhead contact system, is the main power supply device for electrified railways. Currently, there are two types: flexible contact lines and rigid contact lines.

[0003] Flexible overhead contact lines primarily employ simple suspension or chain suspension structures, placing high demands on the suspension system. They require not only high rigidity but also small spans to provide ample support for the overhead wires. Furthermore, the guide heads offer poor guidance, making the line prone to vertical swaying. These shortcomings prevent their use on high-speed trains. Additionally, the contact wires and load-bearing cables of flexible overhead contact lines are subjected to significant tensile stress, increasing the risk of breakage and making maintenance difficult should problems occur.

[0004] Rigid overhead contact lines use metal supports instead of traditional flexible rails, but they require higher installation precision. The quality of rigid contact lines is more susceptible to construction errors, increasing installation costs. Furthermore, due to their inherent rigidity, changes in contact between the train's pantograph and the contact line result in significant impacts, unlike flexible contact lines which can mitigate these impacts through deformation. This leads to increased wear on both the contact line cable and the pantograph.

[0005] Most existing overhead contact line busbar structures are rigid structures. When used in flexible or rigid overhead contact lines, they cannot alleviate the problems of high breakage risk in flexible overhead contact lines and lack of buffering capacity in rigid overhead contact lines. Therefore, it is necessary to design new overhead contact line busbar structures to overcome the above-mentioned defects. Summary of the Invention

[0006] The purpose of this invention is to provide a contact wire busbar based on a flexible structure, which, after being installed on the contact wire, can solve the problems of high risk of breakage of flexible contact wire and lack of buffering in rigid contact wire.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0008] The contact wire busbar based on a flexible structure includes a busbar base, a flexible retainer, and a cable clamp;

[0009] The flexible card holders are arranged in pairs on the bottom surface of the busbar seat, and are symmetrically arranged on the left and right sides;

[0010] The top of the cable clamp is inserted into the flexible card holder, and the bottom of the cable clamps on both sides is inclined towards the middle and has a clamping groove.

[0011] Furthermore, the flexible card holder is strip-shaped and includes two card holder inclined plates and two card holder base plates;

[0012] The top of the card holder inclined plate is connected to the bottom surface of the busbar seat, and the two card holder inclined plates are inclined inward from top to bottom;

[0013] One end of the card holder base plate is connected to the bottom inner side of the card holder inclined plate, and there is a longitudinal groove between the two sides of the card holder base plates.

[0014] Furthermore, the top of the card holder base plate is provided with a recessed clamping slot.

[0015] Alternatively, the inner side of the card holder base plate is provided with a recessed chuck slot.

[0016] Furthermore, the cable clamp includes a clamp top plate and clamp arms;

[0017] The top plate of the chuck is located within the chuck slot or the chuck groove;

[0018] The top of the clamping arm is connected to the bottom surface of the clamping head top plate, and the clamping arms on both sides are inclined towards the middle, forming the clamping groove between the bottom of the clamping arms on both sides.

[0019] Furthermore, the overhead contact line busbar is composed of multiple longitudinally arranged segments spliced ​​together.

[0020] Furthermore, one end of the busbar seat of the segment is provided with a tenon, and the other end is provided with a mortise.

[0021] When adjacent segments are joined together, the corresponding tenon is inserted into the mortise.

[0022] Furthermore, the end of the segment is provided with a vertical screw hole, which is located at the tenon and the mortise.

[0023] Furthermore, a busbar support is provided at the joint of adjacent segments, and the busbar support is provided with a connecting hole. The adjacent segments are joined by inserting bolts into the connecting hole and the screw hole.

[0024] Furthermore, the busbar support is a C-shaped connector, which wraps around the joint of adjacent segments.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] This invention provides a contact network busbar based on a flexible structure, which has appropriate rigidity, can guide the cable and prevent the cable from swinging up and down. After being installed on a flexible contact network, it can effectively reduce the risk of breakage.

[0027] Meanwhile, due to its flexible structure, this invention has a deformation buffering effect. When installed on a rigid contact network, it can reduce the impact on the contact network and pantograph when the contact changes, thereby significantly increasing the train's operating speed, which is limited by the busbar, while also reducing the wear on the pantograph. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other embodiments can be obtained from these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the assembly of a single-section busbar according to the present invention.

[0030] Figure 2 This is a schematic diagram of the deformation of the flexible structure of the present invention.

[0031] Figure 3 This is a side view of a single-section busbar according to the present invention.

[0032] Figure 4 This is a schematic diagram of the multi-section busbar assembly of the present invention.

[0033] Figure 5 This is a schematic diagram of the busbar connection of the present invention.

[0034] The diagram is labeled as follows:

[0035] 1-Bus bus holder, 2-Flexible bracket, 3-Cable clamp, 4-Bus bus support;

[0036] 11-Tenon, 12-Moiré, 13-Screw hole;

[0037] 21-Sloping plate of the card holder, 22-Base plate of the card holder, 23-Vertical groove, 24-Clipper slot, 25-Clipper slot;

[0038] 31-Clamping head top plate, 32-Clamping arm, 33-Clamping groove. Detailed Implementation

[0039] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0040] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0041] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "setting," etc., should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0042] In a specific implementation, the length direction of the overhead contact line busbar is defined as longitudinal.

[0043] This invention provides a contact wire busbar based on a flexible structure, which can be installed in flexible or rigid contact wires. It can solve the problem of insufficient rigidity in flexible contact wires, which makes it difficult to increase train speed, and can also solve the problem of excessive rigidity in rigid contact wires, which makes them difficult to install and cannot reduce impact.

[0044] like Figure 1 The overhead contact line busbar includes a busbar seat 1, a flexible bracket 2, and a cable clamp 3.

[0045] Busbar seat 1 is a horizontally set flat plate structure that is connected to the suspension bracket and rod insulator. It is fixed to the tunnel wall or low-clearance building by pre-embedded channels or by adhesive anchor bolts.

[0046] Flexible card holders 2 are arranged in pairs on the bottom surface of busbar seat 1, and are symmetrically arranged on the left and right sides. For example... Figure 1 and Figure 2 The flexible mounting bracket 2 has a U-shaped cross-section and a strip-shaped longitudinal section, comprising two mounting bracket inclined plates 21 and two mounting bracket base plates 22. The top of the mounting bracket inclined plates 21 is connected to the bottom surface of the busbar seat 1, and the two mounting bracket inclined plates 21 slope inward from top to bottom. One end of the mounting bracket base plate 22 is connected to the inner bottom of the mounting bracket inclined plates 21, and a longitudinal groove 23 is formed between the two mounting bracket base plates 22. The flexible mounting bracket 2 can be made of high-strength, high-elasticity aluminum alloy or other conductive and highly elastic materials, with the following performance requirements: maximum vertical working load of 4kN, maximum horizontal working load of 2.5kN, and elasticity range of 0-3.5mm. The flexible mounting bracket 2 and the busbar seat 1 are manufactured using an integral pultrusion process and are made of the same material.

[0047] The top of the cable clamp 3 is inserted into the flexible retainer 2, and the bottoms of the cable clamps 3 on both sides are inclined towards the center and have clamping grooves 33. Specifically, the cable clamp 3 includes a clamp top plate 31 and clamping arms 32. The top of the clamping arms 32 is connected to the bottom surface of the clamp top plate 31, and the clamping arms 32 on both sides are inclined towards the center, forming clamping grooves 33 between the bottoms of the clamping arms 32. The cable clamp 3 fixes the wire (contact wire).

[0048] The base plate 22 of the flexible card holder 2 has two structural forms, and the corresponding cable clamp 3 can be inserted into the flexible card holder 2 in two ways.

[0049] Example 1:

[0050] like Figure 1 The top of the base plate 22 is provided with a recessed chuck groove 25, and the top plate 31 of the chuck is located in the chuck groove 25.

[0051] Example 2:

[0052] like Figure 2 The inner side of the base plate 22 of the card holder is provided with a recessed chuck slot 24, and the top plate 31 of the chuck is located in the chuck slot 24.

[0053] In addition, such as Figure 3 The overhead contact line busbar is composed of multiple longitudinally arranged segments spliced ​​together. For example... Figure 5 One end of the busbar seat 1 of the segment is provided with a tenon 11 and the other end is provided with a mortise 12. When adjacent segments are spliced, the corresponding tenon 11 is inserted into the mortise 12. The end of the segment is provided with a vertical screw hole 13, which is located at the tenon 11 and the mortise 12.

[0054] like Figure 4 At the joint of adjacent segments, a busbar support 4 is provided. The busbar support 4 has connecting holes, and the adjacent segments are joined by inserting bolts into the connecting holes and screw holes 13. The busbar support 4 is a C-shaped connector, which wraps around the joint of adjacent segments. The longitudinal spacing of the busbar support 4 is 4.0 meters.

[0055] In the above structure, the bottom and top of the card holder inclined plate 21 are thicker, both with a thickness of 30-60mm, while the waist is thinner, with a thickness of 3-8mm. Under stress, the left and right waists will bend to cushion the impact. The angle of inclination of the card holder inclined plates 21 towards each other is 60-80 degrees. The length of the busbar seat 1 is 3.8-4.2m. The spacing between the flexible card holders 2 on both sides is 10-20cm.

[0056] When a train runs on an uneven track, the pantograph will move up and down, impacting the overhead contact line. After the cable clamp 3 of the busbar is impacted, the inclined plate 21 of the flexible clamp 2 will undergo flexible deformation, such as... Figure 2 As shown, the structural deformation buffers the impact, reducing wear on the cable and pantograph. Simultaneously, because the busbar is divided into multiple parts, deformation of a single part does not affect subsequent parts, enhancing the busbar's guiding stability for the cable. This invention utilizes a flexible structure to buffer the impact on the busbar. After the pantograph impacts the busbar, the flexible structure deforms, buffering the impact and increasing the elastic deformation to between 0 and 3.5 mm, effectively mitigating excessive deflection and reducing the suspension stiffness of conventional busbar systems by approximately 40% to 50%.

[0057] The above examples illustrate the present invention only to aid in understanding it and are not intended to limit the scope of the invention. Those skilled in the art can make various simple deductions, modifications, or substitutions based on the principles of this invention.

Claims

1. A contact wire busbar based on a flexible structure, characterized in that: The contact wire busbar includes a busbar seat (1), a flexible bracket (2), and a cable clamp (3); The flexible card holders (2) are arranged in pairs on the bottom surface of the busbar seat (1) and are arranged symmetrically on the left and right sides; The top of the cable clamp (3) is inserted into the flexible card seat (2), and the bottom of the cable clamps (3) on both sides is inclined towards the middle and has a clamping groove (33). The flexible card holder (2) is strip-shaped and includes two card holder inclined plates (21) and two card holder bottom plates (22). The top of the card holder inclined plate (21) is connected to the bottom surface of the busbar seat (1), and the two card holder inclined plates (21) are inclined inward from top to bottom; One end of the card seat base plate (22) is connected to the bottom inner side of the card seat inclined plate (21), and there is a longitudinal groove (23) between the two sides of the card seat base plate (22). The bottom and top of the card slot inclined plate (21) are thicker, while the waist is thinner. When subjected to force, the left and right sides of the waist will bend.

2. The contact wire busbar based on a flexible structure according to claim 1, characterized in that: The top of the card holder base plate (22) is provided with a recessed clamp slot (25).

3. The contact wire busbar based on a flexible structure according to claim 1, characterized in that: The inner side of the card base plate (22) is provided with a recessed chuck slot (24).

4. The contact wire busbar based on a flexible structure according to claim 2, characterized in that: The cable clamp (3) includes a clamp top plate (31) and a clamp arm (32); The top plate (31) of the chuck is located within the chuck slot (25); The top of the clamping arm (32) is connected to the bottom surface of the clamping head top plate (31), and the clamping arms (32) on both sides are inclined towards the middle, forming the clamping groove (33) between the bottom of the clamping arms (32) on both sides.

5. The contact wire busbar based on a flexible structure according to claim 3, characterized in that: The cable clamp (3) includes a clamp top plate (31) and a clamp arm (32); The top plate (31) of the chuck is located inside the chuck slot (24); The top of the clamping arm (32) is connected to the bottom surface of the clamping head top plate (31), and the clamping arms (32) on both sides are inclined towards the middle, forming the clamping groove (33) between the bottom of the clamping arms (32) on both sides.

6. The contact wire busbar based on a flexible structure according to claim 1, characterized in that: The overhead contact line busbar is composed of multiple longitudinally arranged segments spliced ​​together.

7. The contact wire busbar based on a flexible structure according to claim 6, characterized in that: One end of the busbar seat (1) of the segment is provided with a tenon (11), and the other end is provided with a mortise (12). When adjacent segments are joined together, the corresponding tenon (11) is inserted into the mortise (12).

8. The contact wire busbar based on a flexible structure according to claim 7, characterized in that: The end of the segment is provided with a vertical screw hole (13), which is located at the tenon (11) and the mortise (12).

9. The contact wire busbar based on a flexible structure according to claim 8, characterized in that: A busbar support (4) is provided at the splicing point of adjacent segments. The busbar support (4) is provided with a connecting hole. The adjacent segments are spliced ​​by inserting a bolt into the connecting hole and the screw hole (13).

10. The contact wire busbar based on a flexible structure according to claim 9, characterized in that: The busbar support (4) is a C-shaped connector, which is wrapped around the joint of adjacent segments.

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