Busbar for clamping contact line

Abstract

A busbar used for clamping a contact line comprises a busbar body, two V-shaped grooves are symmetrically formed in the two sides above a jaw in a cavity of the busbar body in the line direction, each V-shaped groove is formed by intersecting a first inclined face and a second inclined face, a plurality of drainage holes are formed in the bottom of each V-shaped groove in the line direction, and the drainage holes penetrate through the whole first inclined face; two convex ribs are symmetrically arranged on the two sides of the jaw outside the cavity of the busbar body in the line direction, and the convex ribs are located between the drainage hole and the jaw and are close to the outer port of the drainage hole. The V-shaped grooves are formed in the two sides, above the jaw, in the busbar cavity, and the multiple drainage holes are formed in the bottoms of the V-shaped grooves, so that condensate water in the busbar cavity is drained, and accumulated water in the busbar cavity is prevented from flowing to the jaw; accumulated water flowing out of the drainage holes and condensed water formed outside the busbar cavity are intercepted through the convex ribs arranged close to the outer ports of the drainage holes, and the problem that the accumulated water inside and outside the busbar cavity flows to a jaw, and consequently the jaw is corroded is thoroughly solved.

Description

Technical Field

[0001] This invention belongs to the technical field of rigid suspension power supply systems for rail transit, and specifically relates to a busbar for clamping contact wires. Background Technology

[0002] In rigid suspension power supply systems for rail transit, busbars are used to clamp the contact wire and carry current, forming a rigid contact network power supply system through intermediate joints and support devices. Due to the relatively harsh environment inside tunnels, especially in special sections such as coastal areas, rivers, and lakes, water seepage or even leakage may occur, and humidity is high. Condensation easily forms inside the busbars. Over time, this condensation accumulates and flows along the sidewalls of the busbars to the gaps where the contact wire is clamped, causing an electrochemical reaction. Long-term accumulation can corrode the clamping areas, and in severe cases, can cause the contact wire to detach, affecting the current collection quality of the pantograph-catenary system. Patent CN 104955675 B, by setting a protective baffle inside the busbar, can block condensation, but after flowing out through the drain holes, the condensation still flows along the outer slope of the busbar to the contact area between the clamp and the contact wire. Simultaneously, water accumulates outside the busbar cavity and flows along the outer slope to the contact area between the clamp and the contact wire, failing to completely achieve a water-blocking effect. Summary of the Invention

[0003] The present invention provides a busbar for clamping contact wires to overcome the shortcomings of the prior art.

[0004] The technical solution adopted in this invention is: a busbar for clamping contact wires, comprising a busbar body, wherein two V-shaped grooves are symmetrically arranged on both sides above the jaws in the cavity of the busbar body along the line direction, the V-shaped grooves are formed by the intersection of a first inclined surface and a second inclined surface, and a plurality of drainage holes are provided at the bottom of the V-shaped grooves along the line direction, and the drainage holes penetrate the entire first inclined surface; at least two convex ribs are symmetrically arranged on both sides of the jaws outside the cavity of the busbar body along the line direction, and the convex ribs are located between the drainage holes and the jaws and close to the outer port of the drainage holes.

[0005] The angle β between the first inclined plane and the horizontal plane is greater than the vertical tilt angle α when the busbar is arranged on the curved section.

[0006] Two first grooves are symmetrically arranged on both sides of the jaw outside the cavity of the busbar body along the line direction, and the first grooves are located between the drain hole and the rib and are close to the outer port of the drain hole and the root of the rib.

[0007] Two second grooves are symmetrically arranged on both sides of the jaw outside the cavity of the bus body along the line direction, and the second grooves are located between the jaw and the rib and adjacent to the root of the rib.

[0008] A busbar for clamping contact wires includes a busbar body. Two V-shaped grooves are symmetrically arranged on both sides of the jaws within the cavity of the busbar body, running along the wire direction. Each V-shaped groove is formed by the intersection of a first inclined plane and a second inclined plane, with the angle β between the first inclined plane and the horizontal plane being greater than the vertical lateral tilt angle α of the busbar when arranged on a curved section. Several drainage holes are provided at the bottom of the V-shaped grooves, running along the wire direction, and these drainage holes penetrate the entire first inclined plane. At least two steps are symmetrically arranged on both sides of the jaws outside the cavity of the busbar body, running along the wire direction. One end face of each step penetrates the outer port of the drainage hole, and the other end face of the step is close to the jaws, making the step adjacent to the outer port of the drainage hole.

[0009] Two positioning grooves are symmetrically arranged on both sides of the jaw outside the cavity of the manifold body, along the line direction, and the axis of the positioning grooves coincides with the center of the drain hole.

[0010] The busbar body cavity has two second ribs and two third ribs symmetrically arranged on both sides of the inner wall along the line direction.

[0011] The busbar body has two rows of connecting holes symmetrically arranged on both sides along the line direction, and the center line of the third rib coincides with the center of the connecting hole.

[0012] The second inclined surface is recessed into the inner wall of the busbar body cavity.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. This invention solves the problem of water accumulation inside and outside the manifold cavity flowing into the jaws and causing corrosion by setting V-shaped grooves on both sides above the jaws, with several drainage holes at the bottom of the V-shaped grooves. This allows condensate inside the manifold cavity to flow into the V-shaped grooves and be discharged through the drainage holes, preventing water from flowing into the jaws. Furthermore, grooves are provided on both sides of the ribs to enhance their water-blocking effect.

[0015] 2. The angle β between the V-shaped groove and the horizontal plane of this invention is greater than the vertical lateral tilt angle α when the manifold is arranged on the curved section, which can completely solve the problem of water accumulation on the curved section.

[0016] 2. The present invention can also be modified by setting a step at the outer port of the drain hole. The step can intercept the water flowing out of the drain hole and the condensate formed outside the manifold cavity and prevent the water from flowing down the outer slope of the manifold to the contact part between the jaws and the contact line.

[0017] 3. The present invention improves the processing efficiency of drainage holes by setting a drainage hole positioning groove on the outside of the manifold and using the positioning groove to achieve precise processing of the drainage holes. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the first embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the jaw structure in the second embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the jaw structure in the third embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the jaw portion structure according to the fourth embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the vertical tilt of the present invention when arranged on a curved section;

[0023] Figure 6 This is a schematic diagram of the connection structure between the present invention and the busbar intermediate connector. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1-6 The present invention will be described in detail below with reference to specific embodiments.

[0025] Example 1: Refer to Figure 1 The system includes a busbar body 1. Two V-shaped grooves 2 are symmetrically arranged on both sides above the jaws 4 inside the cavity of the busbar body 1, along the direction of the line. The V-shaped grooves 2 are formed by the intersection of a first inclined surface 2-1 and a second inclined surface 2-2. The angle β between the first inclined surface 2-1 and the horizontal plane is greater than the vertical lateral tilt angle α when the busbar is arranged on a curved section. Several drainage holes 3 are provided at the bottom of the V-shaped grooves along the direction of the line, and the drainage holes 3 penetrate the entire first inclined surface 2-1. Two convex ribs 6 are symmetrically arranged on the inclined surfaces on both sides of the jaws 4 outside the cavity of the busbar body 1, along the direction of the line. The convex ribs 6 are located between the drainage holes 3 and the jaws 4 and are close to the outer port of the drainage holes 3.

[0026] This embodiment allows condensate inside the manifold drain cavity to flow into the V-shaped groove and be discharged through the drain hole, preventing water accumulation inside the manifold drain cavity from flowing towards the jaws. Furthermore, by setting a rib immediately adjacent to the outer port of the drain hole, the rib's water-blocking effect intercepts the water flowing out of the drain hole and the condensate formed outside the manifold drain cavity, preventing water from flowing along the outer slope of the manifold drain to the contact area between the jaws and the contact line. This completely solves the problem of water accumulation inside and outside the manifold drain cavity flowing towards the jaws, causing jaw corrosion.

[0027] Example 2: Refer to Figure 2Based on Embodiment 1, two first grooves 5 are symmetrically arranged on the inclined surfaces of the jaws 4 outside the cavity of the manifold body 1, running in the direction of the line. The first grooves 5 are located between the drain hole 3 and the rib 6, and are adjacent to the outer port of the drain hole 3 and the root of the rib 6. Two second grooves 7 are symmetrically arranged on the inclined surfaces of the jaws 4 outside the cavity of the manifold body 1, running in the direction of the line. The second grooves 7 are located between the jaws 4 and the rib 6, and are adjacent to the root of the rib 6. This embodiment improves the water-blocking effect of the rib by providing grooves on both sides of the rib.

[0028] Example 3: Reference Figure 3 The system includes a busbar body 1. Two V-shaped grooves 2 are symmetrically arranged on both sides above the jaws 4 inside the cavity of the busbar body 1, along the direction of the line. The V-shaped grooves 2 are formed by the intersection of a first inclined surface 2-1 and a second inclined surface 2-2, and the angle β between the first inclined surface 2-1 and the horizontal plane is greater than the vertical lateral tilt angle α when the busbar is arranged on a curved section. Several drainage holes 3 are provided at the bottom of the V-shaped grooves along the direction of the line, and the drainage holes 3 penetrate the entire first inclined surface 2-1. Two steps 10 are symmetrically arranged on the inclined surfaces on both sides of the jaws 4 outside the cavity of the busbar body 1, along the direction of the line. The upper end face 9 of the step 10 penetrates the outer port of the drainage hole 3, and the lower end face 8 of the step 10 is close to the jaws 4, and the step 10 is adjacent to the outer port of the drainage hole 3.

[0029] This embodiment allows condensate inside the manifold cavity to flow into the V-shaped groove and be discharged through the drain hole, preventing water accumulation inside the manifold cavity from flowing towards the jaws. Furthermore, by setting a step adjacent to the outer port of the drain hole, the water flowing out of the drain hole and the condensate formed outside the manifold cavity are intercepted and fall down due to the water-blocking effect of the step, preventing water from flowing along the outer slope of the manifold to the contact area between the jaws and the contact line.

[0030] Example 4: Reference Figure 4 The difference between this embodiment and embodiment 3 is that the lower end face 9 of the step 10 penetrates the outer port of the drain hole 3, and the upper end face 8 of the step 10 is close to the jaw 4, so that the step 10 is adjacent to the outer port of the drain hole 3.

[0031] Reference Figure 5 In the above embodiment, after the manifold is arranged at an angle in the curved section, the condensate on the higher side of the manifold will accumulate along the inner wall of the manifold and flow into the V-shaped groove 2. Since the angle β between the first inclined surface 2-1 and the horizontal plane is greater than the vertical lateral tilt angle α of the manifold when it is arranged in the curved section, the first inclined surface 2-1 still has the function of blocking water, which can prevent the water in the V-shaped groove 2 from overflowing and flowing into the jaws. It can only flow into the manifold where the deflection is the greatest and flow out through the drain hole 3.

[0032] In the above embodiments, to ensure precise machining of the drain hole 3 and improve machining efficiency, two positioning grooves 11 are symmetrically arranged on the inclined surfaces of the jaws 4 outside the cavity of the manifold body 1, running in the direction of the circuit. The axis of the positioning grooves 11 coincides with the center of the drain hole 3. Precise machining of the drain hole can be easily achieved through these positioning grooves.

[0033] In the above embodiments, to enable the busbar to be connected via an intermediate connector, the second inclined surface 2-2 is recessed into the inner sidewall of the cavity of the busbar body 1. Two second ribs 12 and two third ribs 13 are symmetrically arranged on both sides of the inner sidewall of the cavity of the busbar body 1 along the circuit direction. Two rows of connecting holes 14 are symmetrically arranged on both sides of the busbar body 1 along the circuit direction, and the center line of the third rib 13 coincides with the center of the connecting hole 14. The second rib 12 is preferably an arc-shaped rib, and the third rib 13 is preferably a triangular rib.

[0034] Reference Figure 6 When the busbar intermediate connector 15 is connected, the present invention requires that the outer side of the intermediate connector 15 has a groove that matches the second rib 12 and the third rib 13, and the lower end face has an inclined surface that matches the first inclined surface 2-1. The second inclined surface 2-2 is recessed into the inner side wall of the cavity of the busbar body 1 to ensure that the inclined surface of the lower end face of the intermediate connector 15 matches the first inclined surface 2-1. During installation, the busbar intermediate connectors 15 are first inserted into the cavity of the busbar body 1 in pairs, and the lower end of the busbar intermediate connector 15 sits on the first inclined surface 2-1, and the second rib 12 and the third rib 13 are respectively embedded in the corresponding and matching grooves on the intermediate connector 15; then the locking bolt 16 is inserted through the connecting hole 14 and threadedly connected and tightened with the corresponding threaded hole on the intermediate connector 15, so that the two adjacent busbar sections can be connected and fixed.

[0035] After the connection is made by the intermediate joint 15, the intermediate joint 15 is supported by the first inclined surface 2-1 to prevent the intermediate joint from sinking. It can automatically align the connection hole with the corresponding threaded hole on the intermediate joint, and the locking bolt can be directly installed, reducing the installation steps for construction personnel and improving installation efficiency.

[0036] After docking, because the center line of the third rib 13 coincides with the center of the connecting hole 14, and the second rib 12 and the third rib 13 are respectively embedded in the corresponding and matching grooves on the intermediate connector 15, the jaws 4 do not expand outward when the locking bolt 16 is tightened, thus ensuring the clamping force of the jaws 4 on the contact wire. At the same time, the contact surface between the busbar and the intermediate connector is increased, reducing the contact resistance.

[0037] Both the present invention and the busbar intermediate connector are made of aluminum alloy extrusion molding. In use, the busbar is fixed to the top of the tunnel by the busbar positioning clamp, and adjacent busbars are connected by the busbar intermediate connector.

[0038] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Therefore, all equivalent variations made to the content described in the claims of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A busbar for clamping contact wires, characterized in that: The busbar body (1) includes a busbar body (1). Two V-shaped grooves (2) are symmetrically arranged on both sides above the jaws (4) in the direction of the line. The V-shaped grooves (2) are formed by the intersection of a first inclined surface (2-1) and a second inclined surface (2-2). Several drainage holes (3) are provided at the bottom of the V-shaped grooves (2) in the direction of the line, and the drainage holes (3) penetrate the entire first inclined surface (2-1). At least two convex ribs (6) are symmetrically arranged on both sides of the jaws (4) outside the cavity of the busbar body (1) in the direction of the line. The convex ribs (6) are located between the drainage holes (3) and the jaws (4) and are close to the outer port of the drainage holes (3).

2. The busbar for clamping contact wires according to claim 1, characterized in that: The angle β between the first inclined plane (2-1) and the horizontal plane is greater than the vertical tilt angle α when the busbar is arranged on the curved section.

3. The busbar for clamping contact wires according to claim 1, characterized in that: Two first grooves (5) are symmetrically arranged on both sides of the jaws (4) outside the cavity of the busbar body (1) along the line direction. The first grooves (5) are located between the drain hole (3) and the rib (6) and are close to the outer port of the drain hole (3) and the root of the rib (6).

4. The busbar for clamping contact wires according to claim 3, characterized in that: Two second grooves (7) are symmetrically arranged on both sides of the jaws (4) outside the cavity of the busbar body (1) along the line direction, and the second grooves (7) are located between the jaws (4) and the ribs (6) and are close to the root of the ribs (6).

5. A busbar for clamping contact wires, characterized in that: The system includes a busbar body (1). Two V-shaped grooves (2) are symmetrically arranged on both sides above the jaws (4) inside the cavity of the busbar body (1) along the line direction. The V-shaped grooves (2) are formed by the intersection of a first inclined plane (2-1) and a second inclined plane (2-2). The angle β between the first inclined plane (2-1) and the horizontal plane is greater than the vertical lateral tilt angle α when the busbar is arranged on a curved section. Several drainage holes (3) are provided at the bottom of the V-shaped grooves (2) along the line direction. The drainage holes (3) penetrate the entire first inclined plane (2-1). At least two steps (10) are symmetrically arranged on both sides of the jaws (4) outside the cavity of the busbar body (1) along the line direction. One end face (9) of the step (10) penetrates the outer port of the drainage hole (3). The other end face (8) of the step (10) is close to the jaws (4) and the step (10) is adjacent to the outer port of the drainage hole (3).

6. The busbar for clamping contact wires according to any one of claims 1-5, characterized in that: Two positioning grooves (11) are symmetrically arranged on both sides of the jaws (4) outside the cavity of the busbar body (1) along the line direction, and the axis of the positioning grooves (11) coincides with the center of the drain hole (3).

7. The busbar for clamping contact wires according to claim 6, characterized in that: The busbar body (1) has two second ribs (12) and two third ribs (13) symmetrically arranged on both sides of the cavity along the line direction.

8. The busbar for clamping contact wires according to claim 7, characterized in that: The busbar body (1) has two rows of connecting holes (14) symmetrically arranged on both sides along the line direction, and the center line of the third rib (13) coincides with the center of the connecting hole (14).

9. The busbar for clamping contact wires according to claim 8, characterized in that: The second inclined surface (2-2) is recessed into the inner wall of the cavity of the busbar body (1).

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