CN108767802B - Bare cable isolation sleeve - Google Patents

Abstract

The invention belongs to the field of power distribution tools, and particularly relates to a bare cable isolation sleeve. The novel power distribution system has the characteristics of simple and practical structure, convenience and good isolation effect, meanwhile, the isolation sleeve can be freely combined on the basis of the existing single use to meet more and more complex working contents, the working efficiency can be improved under various different use environments, the scheme is low in cost, the novel power distribution system not only has a passive isolation effect, but also can be further expanded to enable the novel power distribution system to have active protection and warning effects, the use effect of the isolation sleeve is further improved, the use occasion of the novel power distribution system is expanded, the integrated structure of the novel power distribution system can conveniently realize a neat and uniform plate surface effect, improve the consistency of the working contents, and have a pushing effect on the standard integration of various works such as power distribution operation.

Description

Bare cable isolation sleeve

Technical Field

The invention belongs to the field of power distribution tools, and particularly relates to a bare cable isolation sleeve.

Background

In the processes of power distribution operation, equipment installation and debugging and the like, a plurality of cables/wires are required to be overlapped, in general, the equipment is required to pass through a specific test and inspection process before being used so as to confirm the correct installation of the equipment, the circuits and various accessory devices or structures and ensure the safe and stable operation of the equipment, and therefore, after the equipment installation and the fixation are finished and the circuit connection is finished, the power-on test is also required. For a few devices with simple structures, convenient installation or higher integrity, most of the internal structures are fixed, therefore, the running performance of the devices is generally tested by adopting a complete machine electrifying mode to judge, but for most of the devices, the connection relation among a plurality of mechanisms which are mutually cooperated, the inside of each structure and each structure is complex, direct complete machine electrifying test can lead to unpredictable results, and particularly for large machines, the internal detailed condition of the structures is difficult to accurately and rapidly confirm, so that in the actual test and inspection process, the detection of each circuit and node in the devices is often adopted, whether the circuit is normal, whether the control system is normal or not is judged by testing the current in the circuit or the node, and the disassembly and maintenance of the devices or the machines or part of the structures are also often required in the daily use and maintenance process. In the overhaul or test process, cables or nodes to be detected are required to be taken down from sockets or joints and the like for testing, under the condition of containing a large number of cables, the cables are often easy to mix up, partial cables can be electrified, the cables can possibly cause power channeling when being densely placed, hidden danger is caused to operators and safety of equipment, meanwhile, the cables are similar in structure color, the connection relation among the cables cannot be distinguished easily when the cables are more, time is consumed for sorting and identification, and the working efficiency is reduced.

Disclosure of Invention

The invention aims to provide a safe and convenient exposed cable isolation sleeve, which can prevent the end part of a cable from being exposed and improve the safety.

In order to achieve the above purpose, the invention adopts the following technical scheme.

A bare cable spacer sleeve comprises a spacer sleeve made of insulating materials and an elastic block embedded on the spacer sleeve; one side of the isolation sleeve is provided with a fixing surface, the fixing surface is provided with a connecting groove, and the elastic block is movably embedded into the connecting groove; the end part of the isolation sleeve is provided with a protection surface, a protection hole is dug on the protection surface, and the protection hole is a counter bore; the other side of the isolation sleeve is provided with a connecting surface, the connecting surface is provided with a connecting groove, an elastic sheet is hollowed out in the middle of the bottom of the connecting groove, and one end of the elastic sheet, which faces the opening of the protection hole, can freely move while the other end is connected to the isolation sleeve; wedge-shaped bulges are respectively arranged on two sides of the elastic block, so that the elastic block can be respectively inserted into the fixing groove and the connecting groove to be connected, and arc-shaped bulges are arranged on the surface of the elastic block, which is used for being contacted with the fixing groove.

The isolation sleeve based on the structure can effectively clamp the end part of the cable, prevents the isolation sleeve from falling off, is convenient to assemble and disassemble, can be freely combined and connected through the elastic block to form a personalized combined use scheme, and can be used in different use environments according to requirements.

In particular, the isolation sleeve is of a cuboid structure, the fixing surface and the connecting surface are respectively positioned on two opposite side surfaces, and the protection surface is positioned on one end surface of the cuboid. The cuboid structural design processing is simple and convenient, the connection is reliable, the combination protection is convenient for a plurality of cables on the row of winding displacement, and the stable and definite position relation can be kept between each isolation sleeve, so that the ordering fixation of the cables is facilitated during use, and the working efficiency is improved.

Further optimizing this scheme includes, sets up a plurality of isolation sleeve, through elastic block interconnect between the isolation sleeve. The scheme of a plurality of isolation sleeves is suitable for isolating protection and position fixation of a plurality of cables with complex connection relations.

In particular, the isolation sleeve comprises a plurality of connecting surfaces, and each connecting surface is provided with a connecting groove. The design of many connection faces can enlarge the degree of freedom of interconnect between the spacer bush, makes the spacer bush can be better adaptation different service environment, and a plurality of cables inside the integrated cable can use six honeycomb formula combination spacer bush to fix in order to reduce the width and constitute circular spacer bush group for example.

In particular, the isolation sleeve is provided with one or more protection surfaces, and the protection surfaces are provided with one or more protection holes. The structure of a plurality of protection holes or a plurality of protection faces can improve the isolation protection ability of single isolation sleeve, makes single isolation sleeve can keep apart the protection to a plurality of cables for protect to the simultaneous of compound multistage cable, when guaranteeing the isolation effect, reduce the dislocation between the cable, prevent original structure disorder, guarantee the efficiency of follow-up work.

In particular, the fixing groove and the connecting groove are formed by trapezoid grooves which extend along the depth direction of the protection hole and have the same size, and the wedge-shaped bulges at the two ends of the elastic block are also the same size and are matched with the trapezoid grooves in size. The groove and the wedge-shaped structure with the same size and structure can simplify the processing design flow, meanwhile, the front and back connection relation does not need to be considered when the isolation sleeve is installed and used, the using steps are simplified, the field assembly efficiency is improved, the mutual structure borrowing among the isolation sleeves can be realized, and the unified standard is realized.

Further optimizing this scheme includes, sets up many bellied locking lines on the inner wall in protection hole, and locking line is the bellied rectangular form structure of protection hole inboard, and locking line extending direction perpendicular to protection shell depth direction, and the elastic sheet is equipped with bellied barb structure on the face that is located protection hole one side.

Further optimization to this scheme includes, and the one end that does not have the protection hole on the spacer sleeve is dug and is equipped with the detection hole, and the detection hole is the counter bore, and the detection hole is connected to the protection hole through the connecting hole of bottom, and the connecting hole diameter is less than the detection hole, and the bottom of protection hole is provided with the contact patch, and the detection hole bottom is provided with the detection piece, is connected through the metal wire electricity between detection piece and the contact patch.

The further optimization to this scheme includes, and the one end that does not have the protection hole on the spacer sleeve is dug and is equipped with the detection hole, and the detection hole is the counter bore, and the detection hole is connected to the protection hole through the connecting hole of bottom, and the connecting hole diameter is less than the detection hole, and the bottom of protection hole is provided with the contact patch, and the detection hole bottom is provided with current limiting resistor, sets up the circular telegram alarm circuit at the rear end of detecting downthehole current limiting resistor to set up the conducting strip in the exit of detection hole.

Further optimizing this scheme includes, sets up fixed knot such as magnet or grab knot at the terminal surface at detection hole place.

The beneficial effects are that:

The bare cable isolation sleeve has the characteristics of simple and practical structure, convenience and good isolation effect, can be freely combined on the basis of the existing single use to meet the increasingly complex working contents, can improve the working efficiency under various different use environments, is low in cost, has the passive isolation effect, can be further expanded to enable the bare cable isolation sleeve to have the active protection and warning effects, further improves the use effect of the isolation sleeve, expands the use occasion of the isolation sleeve, and has the combined structure, can conveniently realize the neat and uniform plate surface effect, improve the consistency of the working contents and promote the standard integration of various works such as power distribution operation.

Drawings

FIG. 1 is a schematic illustration of a bare cable spacer sleeve in an embodiment;

FIG. 2 is a cross-sectional view of a bare cable spacer according to an embodiment;

FIG. 3 is a schematic view of the structure of an elastic block in the embodiment;

Fig. 4 is a schematic view of a combination of bare cable insulation jackets in an embodiment.

Detailed Description

The invention will be described in detail with reference to specific examples.

Based on actual needs, the primary purposes to be achieved by the bare cable spacer 1 of the invention include: the exposed cables are isolated, so that the cable ends are prevented from being contacted with each other to cause electricity channeling; the structure or the method can facilitate marking or fixing of the cables with the same external colors, and prevent confusion; the efficiency of detection installation is ensured or improved.

Based on the above requirements, the invention provides a bare cable spacer 1 as shown in fig. 1, 2 and 4, comprising a spacer 1 made of insulating materials and an elastic block 2 embedded on the spacer 1, wherein the spacer 1 is used for wrapping the end part of a cable to prevent the end part from being bare; one side of the isolation sleeve 1 is provided with a fixing surface 10, the fixing surface 10 is provided with a connecting groove, and the elastic block 2 is movably embedded into the connecting groove; the end part of the isolation sleeve 1 is provided with a protection surface 11, the protection surface 11 is provided with a protection hole 110 in a digging way, the protection hole 110 is a counter bore, the protection hole 110 is used for fixing and protecting the end part of a cable, and in actual use, in order to ensure enough connection and protection capability, the depth of the protection hole 110 is required to ensure that insulation can be realized after the cable is inserted; the other side of the isolation sleeve 1 is provided with a connecting surface 100, and the connecting surface 100 is provided with a connecting groove 101.

In this embodiment, for convenience in installation and use, the spacer 1 is made into a cuboid structure, the fixing surface 10 and the connecting surface 100 are respectively located on two opposite sides, the protecting surface 11 is located on one end surface of the cuboid, and the plurality of spacer 1 can be connected into a row by the elastic blocks 2, so that the spacer 1 is conveniently and tightly fixed and connected together according to the original arrangement sequence of cables, and is convenient for quickly selecting and positioning specific cables, and it should be noted that in practical use, different choices can be made according to requirements, for example, the spacer 1 is set into a structure with a plurality of sides, or the plurality of connecting surfaces 100 are provided to move and fix the surface 10, so that the plurality of spacer 1 is connected into a honeycomb shape or other shapes so as to be convenient for fixing a plurality of cables, for example, the spacer 1 is used in some integrated circuit power distribution cabinets and multi-row line structures. One or more protective surfaces 11 may be provided on the spacer 1, and a plurality of protective holes 110 may be provided on the protective surface 11 to facilitate the fixation of a cable having a plurality of terminals.

Wedge-shaped protrusions 20 are respectively arranged on two sides of the elastic block 2 so as to be respectively inserted into the fixing groove 13 and the connecting groove for connection. In this embodiment, the fixing groove 13 and the connecting groove are formed by trapezoid grooves extending in the depth direction of the protection hole 110 and having the same size, so that the structural design and the assembly process can be simplified, and correspondingly, the wedge-shaped protrusions 20 at both ends of the elastic block 2 have the same size and are matched with the trapezoid grooves in size. The scheme simplifies the design and processing process. The elastic block 2 is used for being provided with arc protruding 21 on the face of being in contact with fixed slot 13 and spread groove, and arc protruding 21 structure can apply the pressure to the spread groove bottom at the connecting block in-process of wedging the spread groove, and correspondingly, the fretwork is formed with elastic piece 102 in the middle of the spread groove 101 bottom, and the elastic piece 102 is towards protection hole 110 open-ended one end can freely movable other end connection on the spacer sleeve 1, and during the use, inserts the cable tip in the protection hole 110, inserts the elastic block 2 in the spread groove again, makes the elastic piece inwards warp in order to compress tightly the cable tip through the extrusion of elastic block 2.

Further, because the cable is generally wrapped with a protective layer such as a rubber layer, in order to prevent the cable from sliding and rotating in the protective hole 110 to fall off or loose, the protective hole 110 and the corresponding fixing structure need to be set up, in this embodiment, a plurality of raised locking patterns 12 are arranged on the inner wall of the protective hole 110, the locking patterns 12 are raised strip-shaped structures on the inner side of the protective hole 110, the extending direction of the locking patterns 12 is perpendicular to the depth direction of the protective shell, and preferably, the locking patterns 12 are arranged on one side opposite to the elastic sheet, and meanwhile, raised barb structures 103 are arranged on the surface of the elastic sheet on one side of the protective hole 110, so that the cable can be effectively prevented from loosening or rotating through the locking patterns 12 and the barb structures 103 on two sides of the cable.

In the practical use process, a plurality of cables are usually required to be operated, in modern equipment, the installation and arrangement of the cables are usually optimized so as to ensure that the cables are distributed along fewer routes as much as possible, so that the line complexity is reduced, the maintenance and installation efficiency is improved, the overall performance of the equipment is improved, the wiring complexity is reduced, but the cables are easy to be confused due to entanglement, and in the overhaul and maintenance process, the cable ends are easy to contact to cause power channeling, and based on the structure of the invention, the isolation sleeve 1 can be combined for use, and the number of the cables which need to be protected or detected in the practical overhaul process is freely combined. When the cable is specifically used, as shown in fig. 4, the three isolation sleeves 1a, 1b and 1c are included in the figure, in the use process, the protection holes 110 of the isolation sleeves 1 can be oriented the same or opposite as required, so that a plurality of cables which are arranged side by side or two cables with connection relations are isolated and protected, through the combined use structure, the relative positions of the end parts of the cables and the cables are kept fixed, so that a specific arrangement sequence can be kept all the time in the detection and disassembly process, the end parts of the two cables with connection relations are kept at the corresponding positions, and the arrangement and connection of the cables are required for judgment and test in the later assembly process are avoided, so that the working efficiency in the actual operation is effectively improved.

Based on the bare cable spacer sleeve 1 provided by the invention, one or more cables can be isolated and protected, and meanwhile, the bare cable spacer sleeve can be conveniently combined for use, so that the cables in rows or cables with specific permutation and combination relations can be fixed and protected. The cable end is protected by the insulating isolation sleeve 1, the cable end is not affected by each other, electric shock, channeling and the like can not occur, meanwhile, the structure is convenient to assemble and disassemble, particularly when the cable with more numbers is electrified, the safety can be greatly improved, the structure can be combined according to a specific scheme, the complexity of subsequent work can be simplified while isolation protection is provided, and the overall work efficiency is improved.

In the practical use process, the electrical signals at the end of the cable need to be frequently tested in the assembly and debugging process, and then the isolation sleeve 1 needs to be removed for detection for many times, so that the disassembly and assembly work needs to be repeated, under the condition of large number of cables, the workload may become large, and meanwhile, the original fixed structure is easy to loosen or confuse due to frequent disassembly and assembly, so that the use effect of the isolation sleeves 1 is damaged, for example, when the cable in one isolation sleeve 1 among the isolation sleeves 1 needs to be detected, the operation may be blocked due to certain elasticity of the cable, and in order to solve the problem, an improvement scheme is proposed for the bare cable isolation sleeve 1 based on the invention, as shown in fig. 2.

In the improvement shown in fig. 2, the end of the isolation sleeve 1 without the protection hole 110 is dug with a detection hole, the detection hole is a counter bore, the detection hole is connected to the protection hole 110 through a connecting hole at the bottom, the diameter of the connecting hole is smaller than that of the detection hole, the bottom of the protection hole 110 is provided with a contact piece 14, the bottom of the detection hole is provided with a detection piece 16, the detection piece 16 and the contact piece 14 are electrically connected through a metal wire, after the cable end is fixed in the protection hole 110, the metal structure of the cable end of the contact piece 14 is directly contacted, the detection piece 16 is electrically connected with a cable, the cable electrical signal can be detected by measuring the electrical signal on the detection piece 16, and because the detection piece 16 is positioned at the bottom of the detection hole, the danger of electric shock is avoided, the diameter of the detection hole can be set to be only used for the measurement handle/rod of the testing device to stretch in, and the end of the detection hole can be provided with a sealing cover.

In another situation, if the outdoor live cable is isolated and protected or the cable is used for isolating and protecting the high-voltage cable, the cable is provided with high voltage, and if the cable is not carried with a proper detection tool during disassembly and assembly, the safety state is difficult to effectively judge, especially if the cable is partially positioned outdoors, dangerous accidents such as electric shock or fire and the like are often caused by the cable which is suspended or fallen due to various reasons, and in the process of waiting for overhauling and maintenance, the loss of nearby personnel and property is possibly caused, even if the isolation protective sleeve is used, curious children or people with unclear point state can possibly have danger such as electric shock and the like caused by destroying and disassembling the isolation sleeve 1.

The specific improvement includes that a current limiting resistor is used to replace the detecting piece 16, a neon tube 17 and a connecting circuit are arranged at the rear end of the current limiting resistor in the detecting hole, and a conducting piece 18 is arranged at the outlet of the detecting hole.

The further improvement of the scheme further comprises that the end face where the detection hole is located is provided with a fixing structure such as a magnet or a grabbing buckle, so that the isolation sleeve 1 is adsorbed on a metal tower pole/grounding wire or hung at a high position, and hidden danger caused after the cable falls to the ground is avoided. Preferably, the magnets and the fixing structures can be arranged on the opposite end faces of the protective surface 11 of the spacer 1, for example by arranging annular magnet slots 19 on the cover surface for mounting annular magnets, or by arranging other fixing structures for corresponding mounting. The annular magnet groove 19 can improve the adsorption effect of the isolation sleeve 1 on the metal surface, and the conductive sheet 18 can be contacted with the metal structure as much as possible by combining the scheme, so as to realize the warning effect.

In particular, in the present embodiment, a spring 15 is further disposed at the bottoms of the contact piece 14 and the protection hole 110 to maintain the position of the contact piece 14, and to increase the contact pressure so as to maintain a tight connection with the cable end.

In particular, the alarm device or structure of the neon tube 17 can be replaced by a buzzer or the like in the scheme to meet the requirements of different use environments.

The fixing structure and the warning structure in the above structure can be combined or selected differently, and the embodiment is implemented only in a preferred scheme. The power-on alarm device utilizes loop current formed between the human body after being grounded, a current-limiting resistor and a power-on cable to realize alarm, and the current-limiting resistor is easy to know, and is used for limiting the current to ensure that the current is kept within the safe current, but can prompt an alarm circuit, such as a neon tube 17 to emit light or a buzzer to vibrate.

Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention.

Claims (10)

1. The bare cable spacer sleeve is characterized by comprising a spacer sleeve made of insulating materials and an elastic block embedded on the spacer sleeve; one side of the isolation sleeve is provided with a fixing surface, the fixing surface is provided with a fixing groove, and the elastic block is movably embedded into the fixing groove; the end part of the isolation sleeve is provided with a protection surface, a protection hole is dug on the protection surface, and the protection hole is a counter bore; the other side of the isolation sleeve is provided with a connecting surface, the connecting surface is provided with a connecting groove, an elastic sheet is hollowed out in the middle of the bottom of the connecting groove, and one end of the elastic sheet, which faces the opening of the protection hole, can freely move while the other end is connected to the isolation sleeve; wedge-shaped bulges are respectively arranged on two sides of the elastic block, so that the elastic block can be respectively inserted into the fixing groove and the connecting groove to be connected, and arc-shaped bulges are arranged on the surfaces, which are used for being contacted with the fixing groove and the connecting groove, of the elastic block.

2. The bare cable spacer according to claim 1, wherein the spacer is of a rectangular parallelepiped structure, the fixing surface and the connecting surface are respectively located on two opposite side surfaces, and the protecting surface is located on one end surface of the rectangular parallelepiped.

3. A bare cable insulation cover according to claim 1 comprising a plurality of insulation covers, the insulation covers being interconnected by resilient blocks.

4. The bare cable insulation sleeve according to claim 1, wherein the insulation sleeve comprises a plurality of connection surfaces, each connection surface being provided with a connection groove.

5. The bare cable insulation sleeve according to claim 1, wherein the insulation sleeve is provided with one or more protective faces, and wherein the protective faces are provided with one or more protective holes.

6. The bare cable spacer of claim 1 wherein the fixing groove and the connecting groove are formed by trapezoidal grooves extending in the depth direction of the protective hole and having the same size, and the wedge-shaped protrusions at both ends of the elastic block have the same size and are matched with the trapezoidal grooves in size.

7. The bare cable spacer sleeve according to claim 1, wherein a plurality of raised locking patterns are arranged on the inner wall of the protective hole, the locking patterns are of raised strip-shaped structures on the inner side of the protective hole, the extending direction of the locking patterns is perpendicular to the depth direction of the protective shell, and raised barb structures are arranged on the surface of the elastic sheet, which is positioned on one side of the protective hole.

8. The bare cable spacer sleeve according to claim 1, wherein a detection hole is dug at one end of the spacer sleeve without a protection hole, the detection hole is a counter bore, the detection hole is connected to the protection hole through a connecting hole at the bottom, the diameter of the connecting hole is smaller than that of the detection hole, a contact piece is arranged at the bottom of the protection hole, a detection piece is arranged at the bottom of the detection hole, and the detection piece and the contact piece are electrically connected through a metal wire.

9. The bare cable spacer according to claim 1, wherein a detection hole is dug at one end of the spacer without a protection hole, the detection hole is a counter bore, the detection hole is connected to the protection hole through a connecting hole at the bottom, the diameter of the connecting hole is smaller than that of the detection hole, a contact piece is arranged at the bottom of the protection hole, a current-limiting resistor is arranged at the bottom of the detection hole, a neon tube and a connecting circuit are arranged at the rear end of the current-limiting resistor in the detection hole, and a conductive piece is arranged at the outlet of the detection hole.

10. A bare cable spacer according to claim 9 wherein a magnet or catch fixing structure is provided on the end face of the test hole.