CN211296096U - Linear cable clamp - Google Patents

Abstract

The utility model provides an in-line cable clip, which comprises a plurality of clips and damping components; the in-line cable clips are formed by flexible connection of the damping components respectively between the clips; wherein, at least one clip is used for connecting with a bracket The fixed connection and at least one wire clip are used for active connection with the bracket, and the damping component is used to absorb the impact load along the in-line direction, which reduces the impact load after the short-circuit fault of the cable occurs, and greatly reduces the damage probability of the cable clip. The utility model realizes flexible connection through damping components, which can hinder the violent collision or high-frequency vibration between different phase wire clips, consume the electromagnetic vibration energy of the cable during normal operation, reduce the impact speed, improve the vibration reduction effect, and avoid the need for wire The clamp is damaged due to the fixed connection, which prolongs the service life of the cable clamp. The clamp is suitable for different voltage levels, cable diameters, column spacing and tunnel sections.

Description

A type of cable clamp

technical field

The utility model relates to the technical field of power transmission network, in particular to an in-line cable clamp.

Background technique

With the continuous improvement of the level of urbanization, the demand for transmission and distribution cable lines in urban construction will continue to increase, and urban cable line construction and power cable line design technology will continue to develop. The laying forms of high-voltage power cables mainly include cable tunnels, pipes, cable trenches, etc. The fixing and support of cables and their accessories mainly depend on the installation and use of cable fittings.

Cable fittings mainly include wire clips, brackets and uprights, which are arranged in sections according to a certain distance. The cable is fixedly installed on the bracket through the wire clip. When a short-circuit fault occurs in the power grid, a large short-circuit current will be generated, forming a strong magnetic field, which acts on the current-carrying cable, and the cable will bear a very large electric force. The electric power transmits the impact load to the clamp of the fixed cable through contact, and will cause plastic deformation of the hardware, resulting in a safety hazard, or even directly breaking and falling off, affecting the safe and stable operation of the power grid. When the power grid is in normal operation, the three-phase alternating current flowing in the cable will induce an alternating magnetic field in the surrounding space, and the alternating magnetic field will also generate electromotive force on the current-carrying cable. The lower part is small, but it will also cause the vibration of cables and hardware, and the sound will be louder under high load, resulting in noise pollution. Long-term vibration of the fittings may also damage the cable insulation, loosen the angle steel brackets, and damage the fixing bolts and fittings. Therefore, the fixture will directly affect the technical requirements of the cable line under normal operation and short-circuit fault conditions. The in-line cable clip in the current technology belongs to a rigid connection. After a short-circuit fault occurs on the rigidly connected cable, the cable is subjected to a large impact load, which causes the cable clip to be easily damaged.

Utility model content

In order to overcome the shortcoming that the cable clips in the prior art are easily damaged, the utility model provides an in-line cable clip, which includes a plurality of clips and damping components; Cable clip; wherein, at least one clip is used for fixed connection with the bracket and at least one cable clip is used for active connection with the bracket, and the damping component is used for absorbing the impact load along the in-line direction, reducing the short-circuit fault of the cable. The impact load greatly reduces the damage probability of the cable clamp.

In order to achieve the above object, the utility model adopts the following scheme:

The utility model provides an in-line cable clip, which comprises a plurality of clips and damping components;

The wire clips are respectively flexibly connected by damping components to form a straight-line cable clip;

Wherein, at least one wire clip is used for fixed connection with the bracket and at least one wire clip is used for movable connection with the bracket;

The damping assembly is used to absorb shock loads in the in-line direction.

The damping assembly includes a first connecting plate (6), a spring and a second connecting plate (7);

The first connection plate (6) and the second connection plate (7) are arranged in parallel in the vertical direction, and the spring is arranged in parallel with the first connection plate (6) and the second connection plate (7) in the horizontal direction. 7) between.

The gas spring is connected with the first connecting plate (6) and the second connecting plate (7) by means of bolts or welding.

The springs include: gas springs (1) and/or helical compression springs (2).

When the springs are gas springs (1), there are two gas springs (1), which are arranged in parallel between the first connecting plate (6) and the second connecting plate (7).

When the springs are helical compression springs (2), there are two helical compression springs (2), which are arranged in parallel between the first connecting plate (6) and the second connecting plate (7).

When the springs are gas springs (1) and helical compression springs (2), the gas springs (1) and helical compression springs (2) are arranged parallel to the first connecting plate (6) and the second connecting plate (7). )between.

The gas spring (1) adopts a free type gas spring, a self-locking type gas spring or a traction type gas spring.

The shape of the helical compression spring (2) is cylindrical, and its material is high carbon steel or stainless steel.

Each of the wire clips includes a base (4) and a cover plate (1), the base (4) is connected with the bracket, and the cover plate (1) is fixed on the base (4) by bolts.

The number of the wire clips is 3.

Compared with the closest prior art, the technical scheme provided by the present utility model has the following beneficial effects:

The in-line cable clip provided by the utility model comprises a plurality of clips and damping components; the in-line cable clips are formed by flexible connection of the damping components respectively between the clips, wherein at least one clip is used for fixed connection with the bracket and At least one wire clip is used for active connection with the bracket; the damping component is used to absorb the impact load along the in-line direction, which reduces the impact load after the short-circuit fault of the cable occurs, and greatly reduces the damage probability of the cable clip;

In the in-line cable clip provided by the utility model, when a relative displacement occurs between any two of the multiple clips, the gas spring and the helical compression spring will be stretched or compressed evenly, which hinders the violent relative movement between each other. The gas spring and the helical compression spring realize flexible connection, which can hinder the violent collision or high-frequency vibration between different phase clamps, consume the electromagnetic vibration energy of the cable during normal operation, reduce the impact speed, improve the vibration reduction effect, and avoid wire The clamp is damaged due to the fixed connection, prolonging the service life of the cable clamp;

When the in-line cable clip provided by the utility model is installed, when a plurality of clips adopt tight fit and loose tight fit, the relative sliding can be ensured smoothly;

For the use environment with large short-circuit current and high electromagnetic vibration intensity, the in-line cable clamp provided by the utility model can adopt gas springs with different working strokes and working pressures, and the two sides can be installed symmetrically or asymmetrically, so as to ensure better wiring. Clamp displacement and load range;

The in-line cable clamp provided by the utility model is suitable for different voltage levels, cable diameters, column spacings and tunnel sections.

Description of drawings

Fig. 1 is the perspective view of the in-line cable clamp in the embodiment of the present invention;

Fig. 2 is the front view of the in-line cable in the embodiment of the present invention;

Fig. 3 is the side view of the in-line cable in the embodiment of the present invention;

Fig. 4 is the top view of the in-line cable in the embodiment of the present invention;

5 is a schematic diagram of a damping assembly in an embodiment of the present invention;

Fig. 6 is the front view of the cover plate in the embodiment of the present invention;

7 is a side view of a cover plate in an embodiment of the present invention;

8 is a top view of a cover plate in an embodiment of the present invention;

Fig. 9 is the front view of the base in the embodiment of the present invention;

Figure 10 is a side view of the base in the embodiment of the present invention;

Figure 11 is a top plan view of the base in the embodiment of the present invention;

In the figure, 1-gas spring, 2-coil compression spring, 3-cover plate, 4-base, 5-support, 6-first connecting plate, 7-second connecting plate.

Detailed ways

The present utility model will be described in further detail below in conjunction with the accompanying drawings.

The embodiment of the present utility model provides an in-line cable clip, as shown in Figures 1-4, which realizes the functions of cable support and electrical conduction of various voltage levels, various spans, and various cross-sections, and To bear various static loads during the installation and operation of the cable, such as construction load and axial extension deformation load, the in-line cable clip provided by the embodiment of the present utility model includes a plurality of wire clips and damping components; the utility model implements For example, three wire clips are used, and the wire clips are flexibly connected by damping components to form a straight-line cable clip;

Wherein, at least one wire clip is used for fixed connection with the bracket and at least one wire clip is used for active connection with the bracket, and the damping component is used for absorbing the impact load along the in-line direction.

As shown in FIG. 5 , the damping assembly includes a first connecting plate 6, a spring and a second connecting plate 7;

The first connecting plate 6 and the second connecting plate 7 are arranged in parallel in the vertical direction, and the springs are arranged in parallel between the first connecting plate 6 and the second connecting plate 7 in the horizontal direction. and the horizontal direction is defined with reference to Figure 2.

The springs are connected with the first connecting plate 6 and the second connecting plate 7 by bolts or welding.

The springs include: gas springs 1 and/or helical compression springs 2 .

When the springs are gas springs 1 , there are two gas springs 1 , which are arranged in parallel between the first connecting plate 6 and the second connecting plate 7 .

When the springs are helical compression springs 2 , there are two helical compression springs 2 , which are arranged in parallel between the first connecting plate 6 and the second connecting plate 7 .

When the springs are the gas spring 1 and the helical compression spring 2 , the gas spring 1 and the helical compression spring 2 are arranged in parallel between the first connecting plate 6 and the second connecting plate 7 .

The gas spring 1 adopts a free-type gas spring, a self-locking gas spring or a traction gas spring.

The shape of the helical compression spring 2 is cylindrical, and its material is high carbon steel or stainless steel.

Each wire clip includes a base 4 and a cover 3, the base 4 is connected with the bracket, and the cover 3 is fixed on the base 4 by bolts.

The specific structure of the cover plate is shown in Figures 6-8, and the specific structure of the base is shown in Figures 9-11. The cover plate 3, the base 4 and the bracket 5 are all made of alloy or polymer materials.

The alloy is aluminum alloy, and the polymer material is glass fiber.

The in-line cable clamp provided by the embodiment of the present utility model can meet the fixing and installation requirements of the cable in the tunnel, and can also compensate for the deformation and displacement of the clamp caused by the impact load of the cable when a short-circuit fault occurs in the power grid, and lift the cable. The ability of equipment to be protected against vibrations due to alternating electromagnetic action during normal operation.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model rather than to limit them. Those of ordinary skill in the art can still modify or equivalently replace the specific embodiments of the present utility model with reference to the above-mentioned embodiments. Any modifications or equivalent replacements that do not depart from the spirit and scope of the present utility model are all within the protection scope of the claims of the present utility model for which the application is pending.

Claims (11)

1. A linear cable clamp is characterized by comprising a plurality of clamps and damping components;

the wire clamps are flexibly connected through damping components to form a linear cable clamp, wherein at least one wire clamp is fixedly connected with the support and at least one wire clamp is movably connected with the support; the damping assembly is used for absorbing impact load along a linear direction.

2. The in-line cable clamp according to claim 1, characterized in that said damping assembly comprises a first connecting plate (6), a spring and a second connecting plate (7);

the first connecting plate (6) and the second connecting plate (7) are arranged in parallel in the vertical direction, and the springs are arranged between the first connecting plate (6) and the second connecting plate (7) in parallel in the horizontal direction.

3. The in-line cable clamp according to claim 2, wherein the spring is connected with the first connecting plate (6) and the second connecting plate (7) by bolts or welding.

4. The in-line cable clamp of claim 2, wherein the spring comprises: a gas spring (1) and/or a helical compression spring (2).

5. The in-line cable clamp according to claim 4, characterized in that when said springs are gas springs (1), there are two gas springs (1) arranged in parallel between the first connecting plate (6) and the second connecting plate (7).

6. The in-line cable clamp according to claim 4, characterized in that when the spring is a helical compression spring (2), there are two helical compression springs (2) arranged in parallel between the first connecting plate (6) and the second connecting plate (7).

7. The in-line cable clamp according to claim 4, characterized in that when the springs are a gas spring (1) and a helical compression spring (2), the gas spring (1) and the helical compression spring (2) are arranged in parallel between the first connecting plate (6) and the second connecting plate (7).

8. The in-line cable clamp according to claim 4, 5 or 7, characterized in that the gas spring (1) is a free gas spring, a self-locking gas spring or a traction gas spring.

9. The in-line cable clamp according to claim 4, 6 or 7, wherein the helical compression spring (2) is cylindrical in shape and is made of high carbon steel or stainless steel.

10. The in-line cable clamp according to claim 1, wherein each clamp comprises a base (4) and a cover plate (3), the base (4) being connected to a support, the cover plate (3) being fixed to the base (4) by means of bolts.

11. The in-line cable clamp of claim 1, wherein there are 3 said clamps.

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