Large inertia moment busbar for railway contact network

Abstract

The utility model relates to the field of rail transit power supply equipment, in particular to a large inertia moment busbar for a railway contact network. The large-inertia-moment busbar for the railway contact network is used for fixing a contact line located above a train pantograph and comprises a busbar body, the busbar body comprises a connecting plate, clamping walls and a partition plate, the two oppositely-arranged clamping walls are fixed to the plate face of one side of the connecting plate, the contact line is jointly clamped by the ends, away from the connecting plate, of the two clamping walls, and the partition plate is arranged between the two clamping walls. A partition plate is fixed between the two clamping walls, and the partition plate, the connecting plate and the two clamping walls jointly define a cavity. And the two sets of inserting plates are arranged, the two sets of inserting plates are limited between the two clamping walls, and the plate faces of the two sets of inserting plates abut against the inner side walls of the two clamping walls correspondingly. At least one contact protrusion is arranged on the inner wall of the clamping wall, and the contact protrusion abuts against the inserting plate at an inclined angle.

Description

Technical Field

[0001] The utility model relates to the field of rail transit power supply equipment, and more specifically to a large inertia moment busbar for a railway contact network. Background Art

[0002] The overhead rigid suspension contact network system is a new type of power supply system. Due to its low installation clearance requirements, fewer parts and less operation and maintenance, it has been increasingly widely used in low-clearance environments such as tunnels and stations in electrified railways and urban rail transit.

[0003] The busbar is the main component of the rigid suspension contact network system, which is used to clamp the fixed contact wire and carry the transmission current. The busbar is directly suspended above the track by a support device at a certain distance as a rigid beam, and the span is generally 6-10m. The locomotive uses the pantograph to contact the contact wire clamped by the busbar above to collect current, so the vertical straightness of the busbar will directly affect the current collection characteristics between the pantograph and the network, and as the main factor determines the maximum operating speed of the system. A larger span or lower busbar stiffness will increase the sag of the busbar, making the current collection characteristics of the locomotive pantograph worse, further limiting the operating speed of the system. Most of the existing busbars are Π-shaped, and the busbar height is 110mm. Taking the 160km / h rigid contact network system as an example, the use of the 110mm high busbar requires the spacing of the suspension support points to be less than 8m. If the deflection of the busbar is controlled by reducing the span, this method will increase the cost of engineering construction, so it is urgent to develop a busbar that can solve the above technical problems. Utility Model Content

[0004] In view of the above-mentioned technical problems, the utility model aims to provide a large inertia moment bus for railway contact network, which can solve the above-mentioned technical problems.

[0005] According to the utility model, a large-moment-of-inertia busbar for a railway contact network is provided, which is used to fix the contact wire located above the train pantograph, and comprises: a busbar body, the busbar body comprises a connecting plate, a clamping wall and a partition, two clamping walls arranged opposite to each other are fixed on one side plate surface of the connecting plate, the two clamping walls jointly clamp the contact wire at one end away from the connecting plate, a partition is fixed between the two clamping walls, and the partition, the connecting plate and the two clamping walls jointly define a cavity; and a plug-in plate, the plug-in plates are provided in two groups, the two groups of plug-in plates are both limited between the two clamping walls, and the plate surfaces of the two groups of plug-in plates are respectively in close contact with the inner side walls of the two clamping walls.

[0006] Wherein, at least one contact protrusion is arranged on the inner wall of the clamping wall, and the contact protrusion abuts against the inserting plate at an inclined angle.

[0007] In a specific embodiment, a through hole is formed on the clamping wall, a threaded hole is formed on the plug plate, a connecting bolt passes through the through hole and is screwed to the plug plate, and the cavity is limited between the connecting plate and the plug plate.

[0008] It can be known from the above technical scheme that, compared with the prior art, the utility model discloses a large inertia moment bus for railway contact network. The utility model sets a partition and a cavity. The setting increases the cross-sectional height of the bus body without significantly increasing the weight of the bus body, so that the rigidity of a single bus body is increased, thereby improving the cross-sectional inertia moment of the bus body; the contact protrusions set on the inner side of the clamping wall can increase the deflection of the bus body on the one hand, and can make the clamping wall and the plug plate contact more effectively on the other hand; the plug plate can be reliably fixed to the clamping wall by connecting bolts.

[0009] Preferably, a limiting protrusion is integrally formed on the inner side of the clamping wall, the length direction of the limiting protrusion is parallel to the length direction of the busbar body, and a limiting groove adapted to the limiting protrusion is integrally formed on one side of the plate surface of the plug board, and the limiting protrusion is tightly embedded in the limiting groove. This arrangement can ensure that the plug board and the clamping wall can be quickly aligned to improve the installation efficiency, and on the other hand, the limiting protrusion and the limiting groove can improve the overall deflection of the two adjacent busbars after connection.

[0010] Preferably, the cross section of the limiting protrusion is an isosceles trapezoid. This arrangement facilitates the installation of the plug board. Preferably, a boss is integrally formed on the board surface of one side of the plug board close to the clamping wall, the end surface area of ​​the boss away from the plug board is smaller than the board surface area of ​​the plug board, the end of the boss away from the plug board abuts against the inner side surface of the clamping wall, and the limiting groove corresponds to the position of the boss. By designing the boss, the contact area between the plug board and the clamping wall can be appropriately reduced to ensure more effective contact between the two. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The utility model will be described below with reference to the accompanying drawings.

[0012] Figure 1 It is a schematic cross-sectional view of a high-moment-of-inertia busbar for a railway overhead contact network;

[0013] Figure 2 Axonometric diagram of a high-moment-of-inertia busbar for railway overhead contact network Figure 1 ;

[0014] Figure 3 Axonometric diagram of a high-moment-of-inertia busbar for railway overhead contact network Figure 2 .

[0015] In the figure:

[0016] 1 is a connecting plate, 2 is a clamping wall, 3 is a partition, 4 is a cavity, 5 is an insert plate, 50 is a limiting groove, 6 is a connecting bolt, 7 is a limiting protrusion, 8 is a boss, 9 is a spring washer, and 10 is a contact protrusion.

[0017] In the present application, all drawings are schematic drawings, which are only used to illustrate the principles of the present utility model and are not drawn according to the actual scale. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] The utility model discloses a large inertia busbar for railway contact network. The utility model arranges a partition plate 3 and a cavity 4. The arrangement increases the cross-sectional height of the busbar body without significantly increasing the weight of the busbar body, so that the rigidity of a single busbar body is increased, thereby increasing the cross-sectional inertia moment of the busbar body; the plug plate 5 can be reliably fixed to the clamping wall 2 by connecting bolts 6, and due to the arrangement of limiting protrusions 7 and limiting grooves 50, the arrangement can ensure that the plug plate 5 and the clamping wall 2 can be quickly aligned to improve the installation efficiency on the one hand, and the limiting protrusions 7 and the limiting grooves 50 can improve the overall deflection of two adjacent busbars after connection; by designing a boss 8, the contact area between the plug plate 5 and the clamping wall 2 can be appropriately reduced to ensure that the two are in more effective contact; without changing the spacing of the busbar body, the running speed of the train can be increased; and within the specified speed range, the number of busbar bodies used can be reduced, thereby reducing the engineering construction cost.

[0020] See the attached examples Figure 1-3The utility model is a schematic diagram of the overall and partial structures of an embodiment of the utility model. The utility model specifically discloses a large inertia moment busbar for railway contact network, which is used to fix the contact line (not shown in the figure) located above the train pantograph (not shown in the figure), including: a busbar body, the busbar body is strip-shaped, the busbar body includes a connecting plate 1, a clamping wall 2 and a partition 3, two oppositely arranged clamping walls 2 are vertically integrated on one side plate surface of the connecting plate 1, and the two clamping walls 2 are away from the end of the connecting plate 1 to clamp the contact line together. When installing the busbar body, it is necessary to ensure that the connecting plate 1 is horizontal and the length direction of the contact line is parallel to the length direction of the busbar body. A partition 3 is integrally formed between the two clamping walls 2. The partition 3, the connecting plate 1 and the two clamping walls 2 together define a cavity 4. The cross-section of the cavity 4 is circular or polygonal. The partition 3 in this embodiment is a rectangular plate and is arranged parallel to the connecting plate 1. Correspondingly, the cross-section of the cavity 4 in this embodiment is rectangular. The cross-sectional height of the bus body in this embodiment is greater than 110 mm. The partition 3 and the cavity 4 are provided for the purpose of increasing the cross-sectional height of the bus body and, while increasing the height of the bus body, reducing its weight as much as possible. The increase in the height of the bus body will greatly increase its vertical cross-sectional moment of inertia, thereby ensuring that the bus body has a higher rigidity.

[0021] Two groups of plug plates 5 are provided, and two adjacent bus bodies are connected together by the two groups of plug plates 5. The two groups of plug plates 5 are both limited between the two clamping walls 2. The plate surfaces of the two groups of plug plates 5 are respectively tightly abutted against the inner side walls of the two clamping walls 2. A plurality of circular through holes are evenly distributed on the clamping walls 2, and a plurality of threaded holes are evenly distributed on the plug plates 5. The connecting bolts 6 are screwed to the plug plates 5 after passing through the through holes. In addition, the connecting bolts 6 are provided with spring washers 9, which are limited between the bolt heads of the connecting bolts 6 and the clamping walls 2. A cavity 4 is limited between the connecting plate 1 and the plug plates 5.

[0022] At least one contact protrusion 10 is provided on the inner wall of the clamping wall 2, and the contact protrusion 10 abuts against the inserting plate 5 at an inclined angle. Figure 1 As shown, in this embodiment, a contact protrusion 10 is provided on the lower inner wall of the clamping wall 2, and the length direction of the contact protrusion 10 is parallel to the length direction of the bus body. The end of the contact protrusion 10 abuts against the inclined surface between the lower horizontal surface and the side vertical surface of the plug board 5, so that the contact protrusion 10 abuts against the plug board 5 at an inclined angle. By providing the contact protrusion 10, on the one hand, the deflection of the bus body can be improved. On the other hand, after the plug board 5 is connected to the clamping wall 2 by bolts, the contact protrusion 10 abuts against the plug board 5 at an inclined angle, which can not only ensure the normal abutment between the vertical contact surfaces of the plug board 5 and the clamping wall 2, but also achieve the abutment of the plug board 5 and the clamping wall 2 through the additional contact protrusion 10, thereby ensuring that the two can effectively contact.

[0023] A limiting protrusion 7 with an isosceles trapezoidal cross-section is integrally formed on the inner side of each clamping wall 2. The length direction of the limiting protrusion 7 is parallel to the length direction of the bus body. A limiting groove 50 adapted to the limiting protrusion 7 is integrally formed on one side plate surface of the plug board 5. The limiting protrusion 7 is tightly embedded in the limiting groove 50. By setting the limiting protrusion 7 and the limiting groove 50, it is ensured that when two adjacent bus bodies are connected through the plug board 5, the plug board 5 can be accurately installed, and the two adjacent bus bodies can be aligned without misalignment.

[0024] A boss 8 is integrally formed on the plate surface of one side of the plug plate 5 close to the clamping wall 2. The end surface area of ​​the boss 8 away from the plug plate 5 is smaller than the plate surface area of ​​the plug plate 5. The end of the boss 8 away from the plug plate 5 abuts against the inner side surface of the clamping wall 2. The limiting groove 50 corresponds to the position of the boss 8. The design of the boss 8 can appropriately reduce the contact area between the plug plate 5 and the clamping wall 2 to ensure effective contact between the two. If the boss 8 is not designed, the contact area between the plug plate 5 and the inner side surface of the clamping wall 2 is too large. If the plug plate 5 or the clamping wall 2 is deformed, it cannot be guaranteed that the plug plate 5 and the clamping wall 2 are tightly fitted.

[0025] When installing the busbar body and the plugboard 5 , first place the two plugboards 5 between the two oppositely arranged clamping walls 2 , and ensure that the limiting protrusion 7 is embedded in the limiting groove 50 , and then tighten the connecting bolts 6 .

[0026] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the embodiments can be referred to each other. The above description of the disclosed embodiments enables professionals and technicians in this field to implement or use the utility model. Various modifications to these embodiments will be obvious to professionals and technicians in this field, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features disclosed herein.

Claims

1. A high-inertia busbar for railway contact network, used to fix the contact wire located above the train pantograph, characterized in that: include: A busbar body, the busbar body comprising a connecting plate (1), a clamping wall (2) and a partition (3), two clamping walls (2) arranged opposite to each other are fixed on a side plate surface of the connecting plate (1), the two clamping walls (2) at one end away from the connecting plate (1) jointly clamp the contact line, a partition (3) is fixed between the two clamping walls (2), and the partition (3), the connecting plate (1) and the two clamping walls (2) jointly define a cavity (4); Insertion plates (5), wherein two groups of the insertion plates (5) are provided, and the two groups of the insertion plates (5) are both limited between the two clamping walls (2), and the plate surfaces of the two groups of the insertion plates (5) are respectively in close contact with the inner side walls of the two clamping walls (2); At least one contact protrusion (10) is provided on the inner wall of the clamping wall (2), and the contact protrusion (10) abuts against the inserting plate (5) at an inclined angle.

2. The high-inertia busbar for railway contact network according to claim 1, characterized in that: The clamping wall (2) is provided with a through hole, the plug plate (5) is provided with a threaded hole, the connecting bolt (6) passes through the through hole and is screwed to the plug plate (5), and the cavity (4) is limited between the connecting plate (1) and the plug plate (5).

3. The high inertia moment busbar for railway overhead contact network according to claim 1 or 2, characterized in that: A limiting protrusion (7) is integrally formed on the inner side of the clamping wall (2), and the length direction of the limiting protrusion (7) is parallel to the length direction of the bus body. A limiting groove (50) adapted to the limiting protrusion (7) is integrally formed on one side of the plate surface of the plug board (5), and the limiting protrusion (7) is tightly embedded in the limiting groove (50).

4. The high-inertia busbar for railway overhead contact network according to claim 3, characterized in that: The cross section of the limiting protrusion (7) is an isosceles trapezoid.

5. The high-inertia busbar for railway overhead contact network according to claim 3, characterized in that: A boss (8) is integrally formed on a plate surface of one side of the plug plate (5) close to the clamping wall (2); the end surface area of ​​the boss (8) away from the plug plate (5) is smaller than the plate surface area of ​​the plug plate (5); the end of the boss (8) away from the plug plate (5) abuts against the inner side surface of the clamping wall (2); and the limiting groove (50) corresponds to the position of the boss (8).

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