Sliding positioning wire clamp

Abstract

The present invention provides a sliding positioning wire clamp, which includes a wire clamp body. The wire clamp body is slidably and positionally connected to a busbar. The wire clamp body is cooperatively connected with an insulator to achieve angle adjustment of the busbar in a direction parallel to the track plane and along the line direction. By slidably connecting the wire clamp body to the busbar, when the busbar expands and contracts, it can freely slide along the line direction without jamming problems. The wire clamp body is cooperatively connected with the insulator, and the arc-shaped protrusion cooperates with the arc-shaped gasket to achieve angle adjustment of the busbar along the line direction.

Description

Technical Field

[0001] The present invention relates to the technical field of railway transportation, and specifically to a sliding positioning clamp. Background Art

[0002] As an important part of the subway power supply system, the rigid catenary system requires the good operation state of the busbar in this structure to ensure the normal current collection of the electric multiple unit. The busbar is prone to displacement changes in the line direction due to temperature changes. There is a certain gap between the clamping mouth of the positioning clamp and the busbar. When the temperature changes, the busbar can move freely along the line direction. However, when the busbar has large fluctuations or inclinations, it may cause jamming between the positioning clamp and the busbar.

[0003] In addition, the subway train runs in a relatively enclosed tunnel underground. The piston wind is easily generated during the running speed, making the dust and dirt in the tunnel easily adhere to the busbar. Over time, dirt forms at the joint position between the positioning clamp and the busbar. As the tunnel environment becomes humid and dew appears in severe cases, after the water is mixed with the dirt adhering to the busbar and dries, it condenses into dirt blocks, resulting in abnormal movement between the busbar and the positioning clamp, and this situation will also cause jamming at the suspension point.

[0004] The jamming of the busbar will cause increased wear of the contact wire at the positioning point, making the pantograph unable to transition smoothly, generating hard points, unstable contact and arcing phenomena. In severe cases, phenomena such as deformation of the T-head bolt and cracking of the insulator will occur, affecting the safety of subway operation. Moreover, in sections with small curves, anchor section joints and large slope changes, due to factors such as the layout of the pull-out value, the range of the lift value, and the superelevation of the outer rail at the curve, the jamming phenomenon between the busbar and the busbar components is significantly more than that in the straight and flat sections of the line. The jamming of the busbar system will not only inhibit the normal telescopic movement of the busbar in the line, but also cause changes in the technical parameters of the catenary system. In severe cases, problems such as deformation of the channel steel base, deformation of the connecting bolts, and cracking of the insulators will occur, bringing potential hazards and risks to the normal operation of the train. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to solve the technical problem that jamming is likely to occur between the traditional busbar and the positioning clamp.

[0006] The present invention provides a sliding positioning clamp, including a clamp body, and the clamp body is slidably and positionedly connected to the busbar;

[0007] The clamp body is cooperatively connected with an insulator to realize the angle adjustment of the busbar in the direction parallel to the track plane and along the line direction.

[0008] The busbar is slidably connected to the clamp body, so that when the busbar expands and contracts, it can slide freely along the line direction without jamming; the clamp body is cooperatively connected with the insulator to realize the angular adjustment of the busbar along the line direction.

[0009] Further, two symmetrically arranged guide rods are provided at the upper end of the busbar, and the clamp body sleeves the guide rods and is slidably connected to the guide rods. When the busbar expands and contracts, it can slide freely along the line direction under the guiding action of the guide rods without jamming.

[0010] Further, a base for installing the guide rods is provided at the upper end of the busbar, and the base is fixed by clamping the busbar with the opposing clamping plates. This setting facilitates disassembly and assembly.

[0011] Further, the clamp body is connected to the insulator by a ball head bolt; an arc-shaped protrusion is further provided on the clamp body, and an arc-shaped gasket that is cooperatively connected with the arc-shaped protrusion is sleeved on the ball head bolt. The ball head bolt sequentially passes through the clamp body and the arc-shaped gasket, and the clamp body is cooperatively connected with the ball head bolt through a provided groove, and the ball head bolt can rotate freely; the arc-shaped protrusion and the arc-shaped gasket cooperate for angular adjustment to realize the angular adjustment of the busbar along the line direction.

[0012] Further, a scale is further provided on one side of the clamp body. The busbar has the characteristics of thermal expansion and contraction, and its length will be different at different temperatures. Therefore, by selecting the initial fixed point according to the temperature, the scale on the scale plays a role in guiding the installation. During construction, the temperature displacement selection table can be relied on to determine the initial fixed point to achieve the purpose of precise installation.

[0013] Further, a main nut and a sub-nut are further provided between the arc-shaped gasket and the insulator. The sub-nut is threadedly connected to the ball head bolt, and the main nut is threadedly connected to the sub-nut. When the present invention is fixedly connected to the insulator through the ball head bolt and the nut, there is still a certain gap between the nut and the insulator. Therefore, by fixing the main nut and rotating the sub-nut, the insulator is tightened, so as to achieve a more firm connection effect and make the overall structure more stable.

[0014] Further, the spiral directions of the internal thread and the external thread of the sub-nut are opposite. With this setting, the main nut and the sub-nut will not loosen. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the drawings and embodiments.

[0016] Figure 1 is a schematic structural diagram of the present invention;

[0017] Figure 2 is Figure 1Enlarged view at position A in the [Chinese context];

[0018] Figure 3 It is a schematic structural view from another perspective of the present invention;

[0019] Figure 4 It is a sectional view of the present invention;

[0020] Figure 5 It is a schematic structural view of the clamp body;

[0021] Figure 6 It is a schematic structural view of the clamp body from another perspective;

[0022] Figure 7 It is the front view of the main nut;

[0023] Figure 8 It is the front view of the auxiliary nut;

[0024] In the figure: 1. Clamp body; 2. Busbar; 3. Guide rod; 4. Base; 5. Opposing clamping plate; 6. Ball head bolt; 7. Arc-shaped gasket; 8. Scale; 9. Main nut; 10. Auxiliary nut; 11. Arc surface protrusion. Detailed implementation mode

[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, so they only show the components related to the present invention.

[0026] As Figure 1 shown, the present invention is a sliding positioning clamp for connecting the busbar 2 and the insulator. The upper end of the busbar 2 is provided with a base 4, and the base 4 and the opposing clamping plate 5 are fixed by clamping the busbar 2. This setting facilitates disassembly and assembly.

[0027] Two symmetrically arranged guide rods 3 are provided on the base 4, and the clamp body 1 is sleeved on the guide rods 3 and is slidably connected to the guide rods 3. When the busbar 2 expands and contracts, it can freely slide along the line direction under the guiding action of the guide rods 3 without jamming problems.

[0028] As Figure 2 , Figure 4 , Figure 5 and Figure 6 shown, the clamp body 1 is connected to the insulator through a ball head bolt 6; the clamp body 1 is also provided with an arc surface protrusion 11, and an arc-shaped gasket 7 that cooperates with the arc surface protrusion 11 is sleeved on the ball head bolt 6. The ball head bolt 6 passes through the clamp body 1 and the arc-shaped gasket 7 in sequence, and the clamp body 1 is connected to the ball head bolt 6 through a set groove, and the ball head bolt 6 can rotate freely; the screw rod of the ball head bolt 6 is tightly connected to the insulator; the arc surface protrusion 11 and the arc-shaped gasket 7 cooperate to adjust the angle, realizing the angle adjustment of the busbar 2 along the line direction.

[0029] As Figure 3 shown, a scale 8 is also provided on one side of the clamp body 1. The busbar 2 has the property of thermal expansion and contraction, and its length will vary at different temperatures. Therefore, by selecting the initial fixed point according to the temperature, the scale on the scale 8 plays a role in guiding the installation. During construction, the temperature displacement selection table can be relied on to determine the initial fixed point, so as to achieve the purpose of precise installation.

[0030] As Figure 4 , Figure 7 and Figure 8 shown, a main nut 9 and a sub-nut 10 are also provided between the arc-shaped pad 7 and the insulator. The sub-nut 10 is threadedly connected to the ball head bolt 6, and the main nut 9 is threadedly connected to the sub-nut 10. When the present invention is fixedly connected to the insulator through the ball head bolt 6 and the nut, there is still a certain gap between the nut and the insulator. Therefore, by fixing the main nut 9 and rotating the sub-nut 10, the insulator is tightened, so as to achieve a more firm connection effect and make the overall structure more stable. Moreover, the spiral directions of the internal thread and the external thread of the sub-nut 10 are opposite. With such a setting, the main nut 9 and the sub-nut 10 will not become loose.

[0031] By slidingly connecting the clamp body 1 and the busbar 2, when the busbar 2 expands and contracts, it can slide freely along the line direction, thus solving the technical problem that the busbar 2 and the positioning clamp are prone to jamming.

[0032] Taking the above ideal embodiments based on the present invention as an inspiration, through the above description, relevant workers 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. A sliding positioning wire clamp, characterized in that: It includes a clamp body (1), and the clamp body (1) is in positioning and sliding connection with a busbar (2); the clamp body (1) is connected to an insulator through a ball head bolt (6); the clamp body (1) is further provided with an arc-shaped protrusion (11), and an arc-shaped gasket (7) that is matched and connected with the arc-shaped protrusion (11) is sleeved on the ball head bolt (6), so as to realize multi-angle free adjustment of the busbar (2) in a direction parallel to the track plane and along the line direction; a main nut (9) and a sub-nut (10) are further arranged between the arc-shaped gasket (7) and the insulator, the sub-nut (10) is in threaded connection with the ball head bolt (6), and the main nut (9) is in threaded connection with the sub-nut (10); the spiral directions of the internal thread and the external thread of the sub-nut (10) are opposite.

2. The sliding positioning wire clamp according to claim 1, characterized in that: Two symmetrically arranged guide rods (3) are provided at the upper end of the busbar (2), and the clamp body (1) sleeves the guide rods (3) and is in sliding connection with the guide rods (3).

3. The sliding positioning wire clamp according to claim 2, wherein: A base (4) for installing the guide rods (3) is provided at the upper end of the busbar (2), and the base (4) is fixed by clamping the busbar (2) with a pair of clamping plates (5).

4. The sliding positioning wire clamp according to claim 1, characterized in that: A scale (8) is further provided on one side of the clamp body (1).

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