Cable for light high-current-carrying locomotive

Abstract

The utility model discloses a cable for a light high-current-carrying locomotive, which comprises a cable body and a plurality of outer sheaths detachably mounted on the cable body. The outer sheath comprises two outer sheath assemblies, each outer sheath assembly comprises a spiral protection belt, and the spiral protection belts are spirally distributed along the periphery of the cable body; the two hoops are arranged at the two ends of the spiral protecting band respectively, the cross section of each hoop is in a semicircular arc shape, and a plurality of butt joint holes are formed in the upper end and the lower end of each hoop; the hoops of the two outer sheath assemblies are connected and fixed through butt joint holes, butt joint screws used for connecting and fixing the hoops are inserted into the corresponding butt joint holes of the two hoops, and butt joint nuts are arranged on the butt joint screws. The spiral protection bands of the two outer sheath assemblies are sequentially and spirally wrapped on the periphery of the cable body at intervals. The locomotive cable with the design is better in tensile resistance, compression resistance and wear resistance and longer in service life.

Description

Technical Field

[0001] The utility model relates to the field of cables, in particular to a cable for light high current-carrying locomotives. Background Art

[0002] Locomotive rubber sheathed cable is a cable specially used for electrical devices such as power distribution systems, control systems, and signal systems of locomotives and urban rail vehicles.

[0003] Existing rubber-sheathed cables for locomotives are softer in texture than some hard-insulated cables and are easily deformed when squeezed or pulled by external forces, that is, their tensile and compressive properties are relatively weak; in addition, their wear resistance is also relatively poor. In some harsh environments, such as frequent friction with rough surfaces, the outer sheath of the rubber-sheathed cable is easily worn, reducing its service life. Utility Model Content

[0004] The utility model aims to provide a light-weight high-current-carrying rubber-sheathed cable for locomotives which is more tensile-resistant, compressive-resistant and wear-resistant.

[0005] The purpose of the present utility model is achieved as follows: a cable for a light high-current locomotive comprises a cable body, and also comprises a plurality of outer sheaths detachably mounted on the cable body; the outer sheath comprises two outer sheath assemblies, each of the outer sheath assemblies comprises a spiral protective tape, and the spiral protective tape is distributed in a spiral shape along the outer periphery of the cable body; there are two clamps, which are respectively arranged at both ends of the spiral protective tape, and their cross-section is semicircular, and a plurality of docking holes are provided at both upper and lower ends; the clamps of the two outer sheath assemblies are connected and fixed through the docking holes, and docking screws for connecting and fixing the clamps are inserted into the corresponding docking holes of the two clamps, and the docking screws are provided with docking nuts; the spiral protective tapes of the two outer sheath assemblies are spirally wrapped around the outer periphery of the cable body in sequence and at intervals.

[0006] Compared with the prior art, the beneficial effect of the present invention is that the rubber-sheathed cable for locomotives provided by the present invention has better compression resistance, tensile strength and wear resistance while ensuring its good flexibility; specifically, several outer sheaths with adjustable positions are added to the cable body, which can be directly removed without passing through the cable ends. These outer sheaths are arranged at corresponding positions of the cable body according to actual needs to improve the local compression resistance, tensile strength and wear resistance of the cable body.

[0007] As a preferred embodiment of the present invention, the spiral protective band is provided with several locking buckles, each comprising a connecting post and a locking bead. The outer sheath further comprises several reinforcement strips, each having a plurality of locking holes in its central portion corresponding to and removably engaging with the respective locking buckles, and first mounting holes at both ends. The clamp is provided with a first threaded hole corresponding to the first mounting hole. A first locking screw is installed in the first mounting hole and its corresponding first threaded hole. This design further secures the clamp to the spiral protective band, thereby improving the outer sheath's tensile and compressive resistance.

[0008] As a preferred embodiment of the present invention, a fixing protrusion is provided at the connection between the clamp and the spiral protective band, and a plurality of second threaded holes are provided on the fixing protrusion; a plurality of fixing holes corresponding to the second threaded holes are provided at the connection between the spiral protective band and the clamp; a fixing clamp is provided on the fixing protrusion for clamping and fixing the end of the spiral protective band, and a plurality of second mounting holes are provided on the fixing clamp for clamping and fixing the end of the spiral protective band; a second locking screw for connecting and fixing the spiral protective band to the clamp is inserted into the second mounting hole, the corresponding fixing hole, and the second threaded hole. This design is simple in structure and ensures a reliable connection and fixation between the clamp and the spiral protective band.

[0009] Furthermore, the spiral protective belt is provided with a plurality of reinforcing ribs distributed along the spiral length direction, so as to further enhance the structural strength of the spiral protective belt and thus improve its compressive performance.

[0010] Furthermore, the cable body includes a conductor, an insulating layer, a filling layer, and a sheath layer in order from the inside to the outside, wherein the insulating layer and the sheath layer are both made of rubber material. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the main structure of the present utility model.

[0012] Figure 2 This is a schematic structural diagram of the outer sheath assembly of the present invention.

[0013] Figure 3 It is a schematic diagram of the cross-sectional structure of the clamp of the utility model.

[0014] Figure 4 It is a cross-sectional schematic diagram of the spiral protective belt of the present invention.

[0015] Figure 5 This is a schematic diagram of the matching relationship between the clamp and the cable body of the utility model.

[0016] Among them, 1 cable body, 1a conductor, 1b insulation layer, 1c filling layer, 1d sheath layer, 2 outer sheath assembly, 2a spiral protective tape, 2b clamp, 2c docking hole, 2d docking screw, 2e docking nut, 3 locking buckle, 3a connecting column, 3b locking bead, 4 reinforcement strip, 4a locking hole, 4b first mounting hole, 4c first threaded hole, 4d first locking screw, 5 fixing protrusion, 5a second threaded hole, 6 fixing splint, 6a second mounting hole, 6b fixing hole, 7 second locking screw, 8 reinforcing rib. DETAILED DESCRIPTION

[0017] The above and other technical features and advantages of the present invention are described in more detail below with reference to the accompanying drawings.

[0018] Combined with attachment Figure 1-5 As shown, a light high-current locomotive cable includes a cable body 1 and a plurality of outer sheaths detachably mounted on the cable body 1; the outer sheath includes two outer sheath assemblies 2, each of which includes a spiral protective tape 2a, which is spirally distributed along the outer circumference of the cable body 1; a clamp 2b, wherein there are two clamps 2b, which are respectively arranged at both ends of the spiral protective tape 2a, and have a semicircular cross-section and a plurality of docking holes 2c at both upper and lower ends; the clamps 2b of the two outer sheath assemblies 2 are connected and fixed through the docking holes 2c, and the corresponding docking holes 2c of the two clamps 2b on the same side are inserted with docking screws 2d for connecting and fixing the clamps 2b, and the docking screws 2d are provided with docking nuts 2e; the spiral protective tapes 2a of the two outer sheath assemblies 2 are spirally wrapped around the outer circumference of the cable body 1 in sequence and at intervals;

[0019] It should be noted that the attached Figure 1 One of the first locking screws 4d is not drawn in order to make it easier to see the position of the first mounting hole 4b. The two corresponding docking holes 2c are on the two mutually docking and fixed clamps 2b on the same side of the outer sheath. One of the docking holes 2c has a circular end to facilitate the insertion of the docking screw 2d, and the other docking hole 2c has a regular hexagonal end to prevent the docking nut 2e from being turned after being inserted.

[0020] The spiral protective band 2a is provided with a plurality of locking buckles 3, each of which includes a connecting column 3a and a locking bead 3b. The outer sheath further includes a plurality of reinforcing strips 4, each of which has a plurality of locking holes 4a in the middle thereof corresponding to the respective locking buckles 3 and detachably engaged with the locking buckles 3, and a first mounting hole 4b at each end thereof. The clamp 2b is provided with a first threaded hole 4c corresponding to the first mounting hole 4b. A first locking screw 4d is installed in the first mounting hole 4b and the corresponding first threaded hole 4c.

[0021] It should be noted that the above-mentioned reinforcement strips 4 are distributed symmetrically around the center; the locking buckles 3 have a certain elastic deformation ability; when installing the reinforcement strip 4, first align the first mounting hole 4b at one end of the reinforcement strip 4 with the first threaded hole 4c on the corresponding clamp 2b, and properly tighten the first locking screw 4d to complete the preliminary fixation of its end; then, engage the locking holes 4a on the reinforcement strip 4 with the corresponding locking buckles 3 on the spiral guard belt 2a in turn; finally, adjust the position of the reinforcement strip 4 appropriately so that the first mounting hole 4b at the other end of the reinforcement strip 4 corresponds to the corresponding first threaded hole 4c on the corresponding clamp 2b, and connect and fix them by the first locking screw 4d, and tighten the first locking screw 4d at the other end at the same time.

[0022] A fixing protrusion 5 is provided at the connection between the clamp 2b and the spiral protective band 2a, and a plurality of second threaded holes 5a are provided on the fixing protrusion 5; a plurality of fixing holes 6b are provided at the connection between the spiral protective band 2a and the clamp 2b, and positions thereof correspond to the second threaded holes 5a; a fixing clamp 6 is provided on the fixing protrusion 5 for clamping and fixing the end of the spiral protective band 2a, and a plurality of second mounting holes 6a are provided on the fixing clamp 6, and positions thereof correspond to the fixing holes 6b; second locking screws 7 for connecting and fixing the spiral protective band 2a to the clamp 2b are inserted into the second mounting holes 6a, the corresponding fixing holes 6b, and the second threaded holes 5a;

[0023] It should be noted that when assembling the outer sheath assembly 2, that is, connecting the clamp 2b and the spiral protective band 2a, first, place the end of the spiral protective band 2a onto the fixing protrusion 5 of the clamp 2b, and adjust the position so that the fixing hole 6b at the end of the spiral protective band 2a is aligned with the corresponding second threaded hole 5a on the fixing protrusion 5; then, install the fixing splint 6 onto the fixing protrusion 5 to clamp the end of the spiral protective band 2a, and adjust the position so that the second mounting hole 6a on the fixing splint 6 is aligned with the corresponding fixing hole 6b on the end of the spiral protective band 2a; finally, insert the second locking screw 7 into the corresponding second mounting hole 6a, fixing hole 6b, and second threaded hole 5a in sequence, and tighten them.

[0024] The spiral protective belt 2a is provided with a plurality of reinforcing ribs 8 distributed along the length direction of the spiral.

[0025] The cable body 1 includes, from the inside to the outside, a conductor 1a, an insulating layer 1b, a filling layer 1c, and a sheath layer 1d, wherein the insulating layer 1b and the sheath layer 1d are both made of rubber material.

[0026] When using a cable:

[0027] First, lay the cable body 1 as required;

[0028] Afterwards, the local position of the cable body 1 where the external force is greater is determined according to the laying environment;

[0029] Finally, install the outer sheath on the local position of the cable body 1 that is subject to greater external force;

[0030] When installing the outer sheath:

[0031] First, align and clamp the two clamping hoops 2b on either side of the outer sheath, and then secure them with the butt screws 2d and butt nuts 2e.

[0032] Afterwards, the spiral protective tapes 2a of the two outer sheath assemblies 2 are spirally wound one after another along the cable body 1;

[0033] Then, align and clamp the two clamping hoops 2b on the other side of the outer sheath to complete the positioning;

[0034] Finally, all the reinforcement strips 4 are installed and fixed in sequence.

[0035] The present invention is not limited to the above-mentioned embodiments. On the basis of the technical solutions disclosed in the present invention, technicians in this field can make some substitutions and deformations of some technical features therein according to the disclosed technical content without creative labor, and these substitutions and deformations are all within the protection scope of the present invention.

Claims

1. Lightweight high current carrying locomotive cable, characterized by: The cable comprises a cable body (1), and also comprises a plurality of outer sheaths detachably mounted on the cable body (1); the outer sheaths comprise two outer sheath components (2), each of the outer sheath components (2) comprising A spiral protective tape (2a), wherein the spiral protective tape (2a) is distributed in a spiral shape along the outer circumference of the cable body (1); A clamp (2b), wherein there are two clamps (2b), which are respectively arranged at the two ends of the spiral protective belt (2a), and have a semicircular arc cross-section, and a plurality of docking holes (2c) are provided at both the upper and lower ends; The clamps (2b) of the two outer sheath assemblies (2) are connected and fixed via a docking hole (2c); a docking screw (2d) for connecting and fixing the clamps (2b) is inserted into the corresponding docking holes (2c) of the two clamps (2b) on the same side; a docking nut (2e) is provided on the docking screw (2d); The spiral protective tapes (2a) of the two outer sheath assemblies (2) are spirally wrapped around the outer circumference of the cable body (1) in sequence and at intervals.

2. The light-duty high-current-carrying locomotive cable according to claim 1, characterized in that: The spiral protective belt (2a) is provided with a plurality of locking buckles (3), and the locking buckles (3) include connecting columns (3a) and locking beads (3b); The outer sheath further comprises a plurality of reinforcing strips (4), wherein the middle portion of the reinforcing strips (4) is provided with a plurality of locking holes (4a) whose positions correspond to the corresponding locking buckles (3) and which are detachably matched with the locking buckles (3), and the two ends of the reinforcing strips (4) are provided with first mounting holes (4b); The clamp (2b) is provided with a first threaded hole (4c) whose position corresponds to the first mounting hole (4b); A first locking screw (4d) is installed in the first mounting hole (4b) and the corresponding first threaded hole (4c).

3. The light-duty high-current-carrying locomotive cable according to claim 1 or 2, characterized in that: A fixing protrusion (5) is provided at the connection between the clamp (2b) and the spiral protective belt (2a), and a plurality of second threaded holes (5a) are provided on the fixing protrusion (5); A plurality of fixing holes (6b) corresponding to the second threaded holes (5a) are provided at the connection between the spiral protective belt (2a) and the clamp (2b); The fixing protrusion (5) is provided with a fixing clamp (6) for clamping and fixing the end of the spiral protective belt (2a), and the fixing clamp (6) is provided with a plurality of second mounting holes (6a) at positions corresponding to the fixing holes (6b); A second locking screw (7) for connecting and fixing the spiral protective belt (2a) and the clamp (2b) is inserted into the second mounting hole (6a), the corresponding fixing hole (6b), and the second threaded hole (5a).

4. The light-duty high-current-carrying locomotive cable according to claim 1 or 2, characterized in that: The spiral protective belt (2a) is provided with a plurality of reinforcing ribs (8) distributed along the length direction of the spiral.

5. The light-duty high-current-carrying locomotive cable according to claim 1 or 2, characterized in that: The cable body (1) comprises, from the inside to the outside, a conductor (1a), an insulating layer (1b), a filling layer (1c), and a sheath layer (1d), wherein the insulating layer (1b) and the sheath layer (1d) are both made of rubber material.

Images