High-voltage cable clamp for electric locomotive

Abstract

The utility model belongs to the field of locomotive cable laying, and provides a high-voltage cable wire clamp for an electric locomotive, which comprises a wire clamp body which is arranged to limit an annular threading hole; the tearable gasket is arranged to be attached to the inner surface of the threading hole, and the tearable gasket comprises a plurality of layers of gasket single bodies which are bonded and stacked layer by layer and can be torn and separated by hand. According to the high-voltage cable clamp for the electric locomotive, the multiple layers of easy-to-tear rubber clamping rings are arranged, so that the high-voltage cable clamp can be combined with field conditions conveniently, the high-voltage cable clamp is suitable for high-voltage cables in a large outer diameter error range, and the high-voltage cables are installed more reliably.

Description

Technical Field

[0001] The utility model belongs to the field of locomotive cable laying and relates to a high-voltage cable clip for electric locomotives. Background Technique

[0002] A high-voltage cable clip is a device used to fix and support high-voltage cables. It is usually made of high-strength insulating materials to ensure that the cables can be effectively fixed in a high-voltage environment and provide good insulation performance to prevent safety hazards such as electric leakage and short circuit. The design and manufacture of high-voltage cable clips need to comply with strict standards and specifications to adapt to different installation environments and cable specifications.

[0003] An electric locomotive, also known as an electric train, refers to a train that obtains electrical energy from a power supply network or power supply rail and then drives the vehicle to run through an electric motor. The electrical energy required for the operation of an electric locomotive is provided by the power supply system of an electrified railway, so a large number of high-voltage cables are needed. The HXD3 series of electric locomotives is a type of locomotive widely used in various types of road conditions on domestic railways. As one of the most important components of a locomotive, the high-voltage cable assembly is listed as a Class B part in the "Locomotive Technical Management Rules" issued by China Railway Corporation in TieZongYun

[2014] No. 187. As the fixed part among them, the high-voltage cable clip plays a role in fixing and protecting the high-voltage cable to ensure the reliability of the power source of the locomotive. However, due to the expansion of the outer diameter error range of high-voltage cables in the regulations of the railway industry standard TB / T1484.2-2017 on railway locomotive and vehicle cables, the original cable clip has problems such as difficult fixation and inconvenient installation.

[0004] CN 104682281 A discloses a cable fixing wire for an electric locomotive. Its bottom is a U-shaped structure, and a cover is processed on the upper part; bottom bolt holes are processed on the bottom of the U-shaped structure; concentric middle bolt holes are processed on the inner and outer walls of the U-shaped structure; a cable slot is arranged between the inner and outer walls; a cover is processed on the upper part of the outer wall, a connecting end is processed at the free end of the cover, and upper bolt holes are processed on the connecting end. The cable slot is designed to be suitable for the structure of two diameters of cables. The lower part is a cable slot for small-diameter cables, and the upper part is a cable slot for large-diameter cables. This invention can accommodate two diameters of cables by designing two cable slots, but it cannot adapt to a large outer diameter error of the cables.

[0005] CN 218216414 U discloses a cable wire clip, including a wire clip body, a wire clamp and a mounting plate; several wire holes are provided on the wire clip body, the wire clamp is inserted into the wire hole, the wire clamp includes a left wire clamp and a right wire clamp used in pairs, both the left wire clamp and the right wire clamp include a semi-circular clip and an elastic clip, the elastic clip is arranged inside the semi-circular clip, and a convex protrusion is provided on the elastic clip for clamping the cable. The wire clip described in this utility model fixes the cable by clamping the outer circumference of the cable with two elastic wire clamps, but the structure of the wire clamp itself is complex, and the left and right ends of the elastic clip need to be inserted into the card slots to prevent it from rotating, and the operation is very cumbersome.

[0006] Therefore, developing a high-voltage cable wire clip for electric locomotives with a simple structure and easy operation has become a technical problem to be solved urgently in this field. Summary of the Utility Model

[0007] In view of this, the present utility model proposes a high-voltage cable wire clip for electric locomotives, which is convenient to combine with the on-site situation by setting multiple layers of easily tearable rubber gaskets, adapts to high-voltage cables within a large outer diameter error range, and makes the installation of high-voltage cables more reliable.

[0008] In order to solve at least one of the above technical problems, the present utility model adopts the following technical solutions:

[0009] According to the present utility model, there is provided a high-voltage cable wire clip for electric locomotives, comprising: a wire clip body configured to define an annular wire passing hole; and a tearable washer configured to fit on the inner surface of the wire passing hole, wherein the tearable washer comprises multiple washer monomers that are adhesively stacked layer by layer and can be torn apart by hand.

[0010] According to an embodiment of the present utility model, the wire clip body comprises: a base having a first arc-shaped groove; and a pressing ring having a second arc-shaped groove; wherein, the base and the pressing ring are detachably connected, and the first arc-shaped groove and the second arc-shaped groove complement each other to form the wire passing hole.

[0011] According to an embodiment of the present utility model, the base has a first through hole; the pressing ring has a second through hole corresponding to the first through hole;

[0012] Wherein, a bolt passes through the first through hole and the second through hole and then cooperates with a nut to connect and fix the base and the pressing ring.

[0013] According to an embodiment of the present utility model, the surfaces of the base and the pressing ring facing away from each other are flat.

[0014] According to an embodiment of the present utility model, at least one of the inner surfaces of the first arc-shaped groove and the second arc-shaped groove has an arched structure, and the radial dimension of the arched structure is greater than the radial dimension of the wire passing hole.

[0015] According to an embodiment of the present utility model, the tearable washer is made of rubber material.

[0016] According to an embodiment of the present utility model, the thicknesses of multiple layers of the washer monomers are consistent.

[0017] According to an embodiment of the present utility model, the thicknesses of multiple layers of the washer monomers are inconsistent, and the washer monomers with different thicknesses have different colors.

[0018] According to an embodiment of the present utility model, the tearable washer has a notch along the circumferential direction.

[0019] According to an embodiment of the present utility model, the width of the tearable washer along the axis direction of the wire passing hole is greater than the width of the wire clamp body.

[0020] By adopting the above technical solutions, the present utility model has at least one of the following advantages compared with the prior art:

[0021] (1) Optimize based on the original design scheme, change the internal rubber to a tearable washer, making it convenient to combine with the on-site situation, making the installation of high-voltage cables more reliable, and improving the reliability of power transmission;

[0022] (2) Design to extend the width of the washer to ensure the safety of high-voltage cables and prevent the problem of the iron ring rubbing against the cable caused by the rubber ring usurping the position due to vibration. Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other embodiments can also be obtained based on these drawings.

[0024] Figure 1 is the front view of the high-voltage cable wire clamp for electric locomotives according to an embodiment of the present utility model;

[0025] Figure 2 is the top view of the high-voltage cable wire clamp for electric locomotives according to an embodiment of the present utility model;

[0026] Figure 3 is Figure 1 the cross-sectional view of the high-voltage cable wire clamp for electric locomotives shown along the A-A section;

[0027] Figure 4 is Figure 3 the partial enlarged view of area B of the high-voltage cable wire clamp for electric locomotives shown.

[0028] Description of Reference Numerals

[0029] Wire clamp body 100, wire threading hole 110, base 120, first through hole 121, first arched structure 122, retaining ring 130, second through hole 131, second arched structure 132;

[0030] Tearable washer 200, first layer of washer monomers 210, second layer of washer monomers 220, third layer of washer monomers 230, fourth layer of washer monomers 240, notch 250. Detailed Embodiment

[0031] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the following further details the embodiments of the present utility model with reference to specific embodiments and the accompanying drawings.

[0032] In the description and claims of the present utility model and the above description of the drawings, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion; the terms "first", "second", etc. in the description and claims of the present utility model or the above drawings are used to distinguish different objects and not to describe a specific order. The meaning of "a plurality" is two or more unless specifically defined otherwise.

[0033] In the description and claims of the present utility model and the above description of the drawings, when an element is referred to as being "fixed to" or "mounted on" or "disposed on" or "connected to" another element, it may be directly or indirectly located on that other element. For example, when an element is referred to as being "connected to" another element, it may be directly or indirectly connected to that other element.

[0034] In addition, the mention of "embodiment" herein means that a specific feature, structure or characteristic described in connection with the embodiment may be included in at least one embodiment of the present utility model. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments.

[0035] Figures 1-3 The high-voltage cable wire clamp for an electric locomotive according to an embodiment of the present utility model is shown from different angles respectively, and generally includes a wire clamp body 100 and a tearable washer 200. Specifically, the wire clamp body 100 is configured to define an annular wire threading hole 110; the tearable washer 200 is configured to fit on the inner surface of the wire threading hole 110. Among them, the tearable washer 200 includes multiple layers of washer monomers that are adhesively stacked layer by layer and can be torn apart by hand. In the embodiment of the present utility model, as Figure 4As shown, the tearable gasket 200 may include a first layer of gasket monomers 210, a second layer of gasket monomers 220, a third layer of gasket monomers 230, and a fourth layer of gasket monomers 240 stacked in a radial direction along the inner wall of the threading hole 110. In other embodiments of the present invention, the number of gasket monomer layers may be increased or decreased based on actual conditions.

[0036] The line card body 100 can be integrally formed or have a split structure. Figures 1-2 As shown, the line card body 100 may include a detachably connected base 120 and a pressure ring 130. Specifically, the base 120 may have a first arcuate groove, and the pressure ring 130 may have a second arcuate groove. When the base 120 and the pressure ring 130 are connected together, the first and second arcuate grooves complement each other to form the wire threading hole 110. The base 120 and the pressure ring 130 may be detachably connected by any conventional method, including but not limited to providing corresponding first and second through-holes 121, 131 on the base 120 and the pressure ring 130, respectively, and using bolts passing through the first and second through-holes 121, 131, and then engaging nuts to securely connect the base 120 and the pressure ring 130. Preferably, the surface of the base 120 opposite the pressure ring 130 is flat. With this arrangement, bolts can be passed through the second and first through-holes 131, 121, and then connected to the mounting surface, ensuring that the base 120 conforms to the mounting surface and securely fixes the high-voltage cable to the mounting surface.

[0037] Further preferably, the inner surface of at least one of the first arc-shaped groove and the second arc-shaped groove has an arched structure. Figure 3 As shown, the inner surface of the first arcuate groove of the base 120 has a first arched structure 122 along a radial section of the wire hole 110. The radial dimension of the first arched structure 122 is larger than the radial dimension of the wire hole 110. The inner surface of the second arcuate groove of the pressure ring 130 has a second arched structure 132 along a radial section of the wire hole 110. The radial dimension of the second arched structure 132 is larger than the radial dimension of the wire hole 110. The first arched structure 122 and the second arched structure 132 are used to accommodate the excess portion of the gasket 200 after extrusion deformation or thermal expansion, thereby preventing excessive compression of the high-voltage cable and ensuring a more secure fixation.

[0038] In the prior art, a rubber gasket of fixed thickness is usually set inside the high-voltage cable clamp. Although the rubber gasket can compensate for the outer diameter error of the high-voltage cable to a certain extent by virtue of the elasticity of the rubber material, when the error is large, it is very easy for the high-voltage cable to fail to pass through the threading hole or the high-voltage cable to fail to be firmly fixed. The high-voltage cable clamp 100 of the present invention adopts a tearable gasket 200 to Figure 4Taking the illustrated embodiment as an example, the first-layer washer unit 210, the second-layer washer unit 220, the third-layer washer unit 230, and the fourth-layer washer unit 240 are adhesively stacked layer by layer, and the layers can be separated by tearing by hand. By tearing off washers of different numbers of layers, the overall thickness of the tearable washer 200 can be changed, so as to adapt to high-voltage cables with different outer diameters. In some embodiments of the present utility model, the thicknesses of the first-layer washer unit 210, the second-layer washer unit 220, the third-layer washer unit 230, and the fourth-layer washer unit 240 can be the same, which facilitates the operator to calculate the number of washer units to be torn off. In other embodiments of the present utility model, the thicknesses of the first-layer washer unit 210, the second-layer washer unit 220, the third-layer washer unit 230, and the fourth-layer washer unit 240 can also be different. For example, they can be sequentially thickened, sequentially thinned, or alternately thick and thin in the radial direction outward from the inner wall of the wire threading hole 110. Preferably, the washer units with different thicknesses can have different colors to facilitate the operator to distinguish the different thicknesses of the washer units and selectively tear off the washer units with appropriate thickness. The washer units are preferably made of rubber material to better adapt to and protect the high-voltage cable by using its elastic properties.

[0039] Preferably, as Figure 1 shown, the tearable washer 200 has a notch 250 in the circumferential direction. This notch 250 can be used to accommodate a part of the washer 200 that is extruded and deformed or expands due to heat, so as to avoid excessive extrusion of the high-voltage cable and make its fixation more reliable. Further preferably, as Figure 2 and Figure 4 shown, the width of the tearable washer 200 in the axial direction of the wire threading hole 110 is greater than the width of the wire clamp body 100. By extending the width of the tearable washer 200, the safety of the high-voltage cable can be ensured, preventing the rubber ring from being displaced due to vibration and avoiding abrasion of the cable by contact with the iron ring.

[0040] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0041] The above-described embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A high-voltage cable clamp for an electric locomotive, characterized in that Comprising: A wire clamp body (100) configured to define an annular wire threading hole (110); and A tearable washer (200) configured to fit on the inner surface of the wire threading hole (110), wherein the tearable washer (200) comprises multiple washer monomers (210, 220, 230, 240) that are adhesively stacked layer by layer and can be torn apart by hand.

2. The high-voltage cable clip for an electric locomotive according to claim 1, characterized in that, The wire clamp body (100) comprises: A base (120) having a first arc-shaped groove; and A retaining ring (130) having a second arc-shaped groove; Wherein, the base (120) and the retaining ring (130) are detachably connected, and the first arc-shaped groove and the second arc-shaped groove complement each other to form the wire threading hole (110).

3. The high-voltage cable wire clamp for an electric locomotive according to claim 2, wherein The base (120) has a first through hole (121); The retaining ring (130) has a second through hole (131) corresponding to the first through hole (121); Wherein, a bolt passes through the first through hole (121) and the second through hole (131) and then cooperates with a nut to connect and fix the base (120) and the retaining ring (130).

4. The high-voltage cable clip for electric locomotives according to claim 3, characterized in that, The surfaces of the base (120) and the retaining ring (130) facing away from each other are flat.

5. The high-voltage cable clip for electric locomotives according to claim 2, characterized in that, At least one of the inner surfaces of the first arc-shaped groove and the second arc-shaped groove has an arched structure (122, 132), and the radial dimension of the arched structure is greater than the radial dimension of the wire threading hole (110).

6. The high-voltage cable clip for electric locomotives according to claim 1, characterized in that, The tearable washer (200) is made of rubber.

7. The high-voltage cable clip for an electric locomotive according to claim 1, characterized in that, The thicknesses of the multiple washer monomers (210, 220, 230, 240) are the same.

8. The high-voltage cable clip for electric locomotives according to claim 1, characterized in that, The thicknesses of the multiple washer monomers (210, 220, 230, 240) are different, and the washer monomers (210, 220, 230, 240) with different thicknesses have different colors.

9. The high-voltage cable clip for electric locomotives according to claim 1, characterized in that, The tearable washer (200) has a notch (250) in the circumferential direction.

10. The high-voltage cable clip for electric locomotives according to claim 1, characterized in that, The width of the tearable washer (200) in the axial direction of the wire threading hole (110) is greater than the width of the wire clamp body (100).

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