CN210326171U - Connecting bolt, cable connector and high-voltage switch cabinet - Google Patents

Abstract

The application relates to a connecting bolt, a cable connector and a high-voltage switch cabinet. The outer wall of the connecting bolt is provided with a first connecting thread and a second connecting thread, the connecting bolt comprises a copper split body and a steel split body, the peripheral wall of the copper split body is provided with a first external thread and a second external thread, and the cross section of the copper split body is in a fan shape; the steel split body is spliced with the copper split body, and a third external thread and a fourth external thread are arranged on the peripheral wall of the steel split body; the third external thread is used for being connected with the first external thread when the steel split body and the copper split body are spliced, so that the first external thread and the third external thread jointly form a first connecting thread; the connecting bolt is composed of two different steel and copper structures, the structural form of the traditional connecting bolt made of a single material is changed, the strength of the connecting bolt is considered, the overcurrent capacity of the connecting bolt is increased, the heating of the connecting bolt is reduced, and the problem that the connecting bolt generates heat seriously in the using process is solved.

Description

Connecting bolt, cable connector and high-voltage switch cabinet

Technical Field

The application relates to the technical field of cable connection, in particular to a connecting bolt, a cable connector and a high-voltage switch cabinet.

Background

The cable connector of the traditional closed high-voltage switch cabinet comprises a straight-through conductive rod, one end of the conductive rod extends into the cabinet body to be in conductive connection, and the other end of the conductive rod is provided with a common connecting bolt. One end of the connecting bolt is connected with the end part of the conductive rod, and the other end of the connecting bolt penetrates through the mounting hole of the wiring terminal, so that the conductive rod is in conductive connection with the wiring terminal, and the conductive rod is connected with an external cable through the wiring terminal.

However, the connecting bolt of the traditional cable connector is made of stainless steel, the overcurrent capacity is poor, the connecting bolt generates heat seriously in the using process, the heat conducting performance of metal is good, the heat can be transmitted to the insulating layer part of the cable connector, the insulating layer is aged, and the service life of the cable connector is shortened. If adopt the connecting bolt of pure copper material, overcurrent ability can greatly increased, can solve the problem that the bolt generates heat, but this kind of connecting bolt's intensity is relatively poor, leads to cable connector to become flexible easily and warp.

Disclosure of Invention

Therefore, it is necessary to provide a connecting bolt, a cable connector and a high voltage switch cabinet for solving the problems of low service life of the cable connector and easy looseness and deformation.

A coupling bolt having a first coupling thread and a second coupling thread formed on an outer wall thereof, the coupling bolt comprising:

the copper split body is provided with a first external thread and a second external thread on the peripheral wall, and the cross section of the copper split body is in a fan shape;

a groove is formed in one surface, adjacent to the copper split body, of the steel split body, a protrusion is arranged on one surface, adjacent to the steel split body, of the copper split body, and the protrusion is inserted into the groove; a third external thread and a fourth external thread are arranged on the peripheral wall of the steel split body; the third external thread is used for being connected with the first external thread when the steel split body and the copper split body are spliced, so that the first external thread and the third external thread jointly form the first connecting thread; the fourth external thread is used for being jointed with the second external thread when the steel split body and the copper split body are spliced, so that the second external thread and the fourth external thread jointly form the second connecting thread; the cross section of the steel split body is in a fan shape.

In one embodiment, the protrusions extend along the axial direction of the copper split body, the grooves are formed along the axial direction of the steel split body, the steel split body can be quickly inserted into the copper split body, and the inserted connecting bolts are not easy to separate from each other in the screwing assembly process.

In one embodiment, the cross section of the bulge is bent, so that the steel split body is reliably inserted into the copper split body; when the connecting bolt rotates, the rotating plane of the connecting bolt is parallel to the cross section of the protrusion, and the cross section of the protrusion is bent, so that the copper split bodies and the steel split bodies cannot be separated from each other, and the steel split bodies and the copper split bodies always keep synchronous rotation.

In one embodiment, the protrusions comprise a first protrusion and a second protrusion, and the first protrusion and the second protrusion are symmetrically arranged on the copper split body; the groove comprises a first groove and a second groove, the first protrusion is inserted into the first groove, and the second protrusion is inserted into the second groove.

In one embodiment, the copper split body and the steel split body are both in a strip-shaped structure, so that the copper split body and the steel split body form a strip-shaped stud structure after being spliced.

In one embodiment, the first external thread and the second external thread are respectively arranged at two ends of the copper split body, and the third external thread and the fourth external thread are respectively arranged at two ends of the steel split body, so that a first connecting thread and a second connecting thread are respectively formed at two ends of the assembled connecting stud.

In one embodiment, the copper split body is provided with a first abutting table which is positioned between the first external thread and the second external thread; the steel components of a whole that can function independently are equipped with second butt platform, second butt platform be located the third external screw thread with between the fourth external screw thread, second butt platform with first butt platform corresponds, makes the connecting bolt after the grafting equipment be formed with be used for with the boss structure of binding post butt to increase connecting bolt and binding post's area of contact, improved connecting bolt's current capacity.

A cable connector comprises the connecting bolt in any one of the above embodiments.

In one embodiment, the cable connector further includes a conductive rod, a connection terminal and a locking member, the conductive rod is provided with a first threaded hole, the first connection thread is located in the first threaded hole and is in threaded connection with the conductive rod, the connection terminal is provided with a through hole, the connection bolt is inserted into the through hole, the locking member is provided with a second threaded hole, the second connection thread is located in the second threaded hole and is in threaded connection with the locking member, the connection bolt is inserted into the connection terminal, and the connection bolt is in threaded connection with the conductive rod and the locking member respectively, so that the connection terminal is electrically connected to the conductive rod through the connection bolt.

A high-voltage switch cabinet comprises a cabinet body and the cable connector.

In the connecting bolt, the cable connector and the high-voltage switch cabinet, one surface of the copper split body of the steel split body is provided with the groove, one surface of the copper split body, which is adjacent to the steel split body, is provided with the protrusion, and the protrusion is inserted into the groove, so that the steel split body and the copper split body are spliced; the peripheral wall of the copper split body is provided with a first external thread and a second external thread, the peripheral wall of the steel split body is provided with a third external thread and a fourth external thread, the third external thread is connected with the first external thread, and the fourth external thread is connected with the second external thread, so that a first connecting thread and a second connecting thread are formed on the outer wall of the connecting bolt; connecting bolt includes steel components of a whole that can function independently and copper components of a whole that can function independently two parts, and the cross section of steel components of a whole that can function independently and copper components of a whole that can function independently all is fan-shaped, make connecting bolt constitute by the structure of two kinds of different materials of steel and copper, adopt the structure that steel and copper combine together promptly, the structural style of the single material of traditional connecting bolt has been changed, not only compromise connecting bolt's intensity like this but also increased connecting bolt's the ability of overflowing, reduce generating heat of connecting bolt, the problem that connecting bolt generates heat more seriously in the use has been solved, the life of cable connector has been prolonged, the problem that connecting bolt adopted pure copper material to have cable connector to become flexible easily and warp has also been avoided.

Drawings

FIG. 1 is a schematic diagram of a high voltage switchgear and cable connection according to an embodiment;

FIG. 2 is a partial schematic view of the high voltage switchgear of FIG. 1;

FIG. 3 is a schematic diagram of the cable connector and the cable connection of the high voltage switch cabinet shown in FIG. 2;

fig. 4 is an exploded view of the cable connector shown in fig. 3;

FIG. 5 is a schematic view of a conductive rod of the cable connector shown in FIG. 4;

FIG. 6 is a schematic view of the collector bar of FIG. 5 from another perspective;

FIG. 7 is a schematic view of a connecting bolt of the cable connector shown in FIG. 4;

FIG. 8 is an exploded view of the attachment bolt of FIG. 7;

fig. 9 is a schematic view of a terminal of the cable connector of fig. 4;

fig. 10 is a cross-sectional view of the terminal shown in fig. 9;

fig. 11 is a schematic view of an anti-loosening element of the cable connector of fig. 4;

fig. 12 is a schematic view of a nut of the cable connector shown in fig. 4.

Detailed Description

In order to facilitate an understanding of the present application, the connecting bolt, the cable connector and the high voltage switchgear will be described more fully below with reference to the related drawings. The preferred embodiments of the connecting bolt, the cable connector and the high-voltage switch cabinet are shown in the attached drawings. However, the connection bolts, the cable connection head and the high voltage switchgear may be realized in many different forms and are not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete with respect to the connecting bolts, the cable connectors and the high-voltage switchgear.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the connecting bolts, cable connectors and high voltage switchgear is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The connecting bolt comprises a copper split body and a steel split body, wherein a first external thread and a second external thread are arranged on the peripheral wall of the copper split body, and the cross section of the copper split body is in a fan shape; the steel split body is spliced with the copper split body, and a third external thread and a fourth external thread are arranged on the peripheral wall of the steel split body; the third external thread is used for being connected with the first external thread when the steel split body and the copper split body are spliced, so that the first external thread and the third external thread jointly form the first connecting thread; the fourth external thread is used for being jointed with the second external thread when the steel split body and the copper split body are spliced, so that the second external thread and the fourth external thread jointly form the second connecting thread; the cross section of the steel split body is in a fan shape.

As shown in fig. 1, the high voltage switch cabinet 10 of an embodiment includes a cabinet body 100 and a cable connector 200. Referring also to fig. 2, in one embodiment, the cable connectors are electrically connected to the cabinet and the cable 20, respectively, such that the cable is electrically connected to the cabinet through the cable connectors.

As shown in fig. 3 and 4, in one embodiment, the cable connector includes a connecting bolt 210. In one embodiment, the cable connector further includes a conductive rod 220 electrically connected to the cabinet. As shown in fig. 5 and 6, in one embodiment, the conductive rod is provided with a first threaded hole 221 for being screwed with the connecting bolt. In one embodiment, the conductive rod is inserted into the cabinet body and electrically connected with the cabinet body, so that the conductive rod is electrically connected with the cabinet body.

In one embodiment, the outer wall of the connecting bolt is formed with a first connecting thread and a second connecting thread. As shown in fig. 7 and 8, the connecting bolt includes a copper sub-body 213 and a copper sub-body 215. The steel split bodies are spliced with the copper split bodies. In one embodiment, the copper sub-body has a first external thread 213a and a second external thread 213b on its peripheral wall. The cross section of the copper split body is in a fan shape. The peripheral wall of the steel split body is provided with a third external thread 215a and a fourth external thread 215 b. The third external thread is used for being connected with the first external thread when the steel split body and the copper split body are spliced, so that the first external thread and the third external thread jointly form the first connecting thread. In one embodiment, the fourth external thread is used for being jointed with the second external thread when the steel split body and the copper split body are plugged, so that the second external thread and the fourth external thread jointly form the second connecting thread. The cross section of the steel split body is in a fan shape. In this embodiment, the cross section of the copper sub-body is a cross section perpendicular to the axial direction of the copper sub-body, and the cross section of the steel sub-body is a cross section perpendicular to the axial direction of the steel sub-body.

Because the first external thread and the second external thread are arranged on the circumferential wall of the copper split body, the third external thread and the fourth external thread are arranged on the circumferential wall of the steel split body, and the steel split body is spliced with the copper split body, the third external thread is jointed with the first external thread, and the fourth external thread is jointed with the second external thread, so that the first connecting thread and the second connecting thread are formed on the outer wall of the connecting bolt. Connecting bolt includes steel components of a whole that can function independently and copper components of a whole that can function independently two parts, and the cross section of steel components of a whole that can function independently and copper components of a whole that can function independently all is fan-shaped, make connecting bolt constitute by the structure of two kinds of different materials of steel and copper, adopt the structure that steel and copper combine together promptly, the structural style of the single material of traditional connecting bolt has been changed, not only compromise connecting bolt's intensity like this but also increased connecting bolt's the ability of overflowing, reduce generating heat of connecting bolt, the problem that connecting bolt generates heat more seriously in the use has been solved, the life of cable connector has been prolonged, the problem that connecting bolt adopted pure copper material to have cable connector to become flexible easily and warp has also been avoided.

As shown in fig. 7 and 8, in order to insert the copper sub-body into the steel sub-body, in one embodiment, the copper sub-body is provided with a protrusion 213 c. The steel split body is provided with a groove 215c, and the protrusion is inserted into the groove, so that the copper split body and the steel split body are spliced. In this embodiment, the protrusion is disposed on a surface of the copper sub-body adjacent to the steel sub-body, and the groove is disposed on a surface of the steel sub-body adjacent to the copper sub-body. It is understood that in other embodiments, the location of the protrusion is not limited to the location on the surface of the copper sub-body adjacent to the steel sub-body, and correspondingly, the location of the opening of the groove is not limited to the location on the surface of the steel sub-body adjacent to the copper sub-body.

In one embodiment, the protrusions comprise a first protrusion and a second protrusion, and the first protrusion and the second protrusion are symmetrically arranged on one surface, adjacent to the steel split body, of the copper split body. The groove comprises a first groove and a second groove, the first protrusion is inserted into the first groove, and the second protrusion is inserted into the second groove, so that the copper split body and the steel split body are more reliably spliced.

As shown in fig. 8, in order to enable the steel sub-body to be quickly inserted into the copper sub-body and the inserted connection bolts not to be easily separated from each other during the screwing assembly process, in one embodiment, the protrusion 213c extends along the axial direction of the copper sub-body, and the groove is formed along the axial direction of the steel sub-body, so that the steel sub-body can be quickly inserted into the copper sub-body and the inserted connection bolts are not easily separated from each other during the screwing assembly process.

In one embodiment, as shown in fig. 8, the protrusion 213c has a bent cross-section to allow the steel sub-body to be securely inserted into the copper sub-body. When the connecting bolt rotates, the rotating plane of the connecting bolt is parallel to the cross section of the protrusion, and the cross section of the protrusion is bent, so that the copper split bodies and the steel split bodies cannot be separated from each other, and the steel split bodies and the copper split bodies always keep synchronous rotation. In this embodiment, the projections are L-shaped in cross-section and correspondingly the grooves are L-shaped in cross-section. When the copper split body and the steel split body need to be assembled or disassembled, the copper split body and the steel split body are mutually inserted or separated along the axial direction of the copper split body and the axial direction of the steel split body. When the connecting bolt is in screw connection and rotation, the protrusion and the groove cannot be separated from each other, so that the copper split body and the steel split body are reliably spliced. In this embodiment, the cross-section of the protrusion is a section perpendicular to the extension direction of the protrusion. The sectional direction of the cross section of the groove and the sectional direction of the cross section of the protrusion are parallel to each other. In this embodiment, the cross sections of the first protrusion and the second protrusion are bent, and the bending directions of the first protrusion and the second protrusion are opposite, so that the problem that the copper split bodies and the steel split bodies are separated from each other in the rotation process of the connecting bolt is completely solved, and the copper split bodies and the steel split bodies are better spliced.

It is understood that the copper sub-bodies are not limited to being provided with protrusions. The steel split body is not limited to be provided with the groove, namely the positions of the protrusion and the groove can be interchanged. In other embodiments, the copper split body is provided with a groove, the steel split body is provided with a protrusion, and the protrusion is inserted into the groove, so that the copper split body and the steel split body are spliced.

As shown in fig. 4, in one embodiment, the cable connector further includes a wire terminal 230 and a locking member 240. In one embodiment, the first connecting thread is located in the first threaded hole and is in threaded connection with the conductive rod. As shown in fig. 9 and 10, the connection terminal is provided with a through hole 231, and the connection bolt is inserted into the through hole so as to be inserted into the connection terminal. As shown in fig. 11, the anti-loosening element is provided with a second threaded hole 241, and the second connecting thread is located in the second threaded hole and is in threaded connection with the anti-loosening element. The connecting bolt is respectively in threaded connection with the conductive rod and the anti-loosening piece, so that the wiring terminal is electrically connected to the conductive rod through the connecting bolt.

Referring also to fig. 7, the coupling bolt includes a first screw coupling portion 210a and a second screw coupling portion 210 c. The first connecting thread is formed on the first screwing part, and the second connecting thread is formed on the second screwing part. In this embodiment, the first screwing part is located in the first threaded hole and is in threaded connection with the conductive rod. The second screwing part is arranged in the through hole in a penetrating mode. The second screwed part is positioned in the second threaded hole and is in threaded connection with the anti-loosening piece, so that the connecting bolt is respectively in threaded connection with the conductive rod and the anti-loosening piece, and meanwhile, the conductive rod is electrically connected to the cable sequentially through the connecting bolt and the wiring terminal. In this embodiment, the first screw portion and the second screw portion are both end portions of the connecting bolt, respectively. The anti-loosening piece is abutted to one side, deviating from the connecting bolt, of the wiring terminal. The wiring terminal is used for being electrically connected with a cable. The connecting bolt penetrates through the connecting terminal and is respectively in threaded connection with the conductive rod and the anti-loosening piece, so that the connecting terminal is electrically connected to the conductive rod through the connecting bolt.

Because the both ends of butt portion are connected with first spiro union portion and second spiro union portion respectively, first spiro union portion is located first threaded hole and with the conducting rod threaded connection, through-hole is worn to locate by second spiro union portion, and second spiro union portion is located second threaded hole and with locking piece threaded connection, and binding post is connected with the cable electricity, makes connecting bolt respectively with conducting rod and locking piece threaded connection, makes the conducting rod loop through connecting bolt and binding post electricity simultaneously and is connected to the cable. Because the current-conducting rod is electrically connected with the cabinet body, the cable is electrically connected with the cabinet body.

Referring again to fig. 7, in one embodiment, the connecting bolt further includes an abutting portion 210b, and both ends of the abutting portion are respectively connected with the first screw connection portion and the second screw connection portion. In this embodiment, the abutting portion is located between the first screw connection portion and the second screw connection portion. In one embodiment, the abutment portion is provided with a first abutment surface and a second abutment surface connected. As shown in fig. 10, the terminal is further provided with a positioning cavity 233 communicating with the through hole, and the first abutting surface is located in the through hole and abuts against the terminal. The second abutting surface is located in the positioning cavity and abutted to the wiring terminal.

In one embodiment, an included angle exists between the first abutting surface and the second abutting surface, namely, the first abutting surface and the second abutting surface are not coplanar, so that the contact area between the wiring terminal and the conductive rod is large, meanwhile, the wiring terminal is not prone to tilting during installation, the problem that poor contact easily exists only in one circular ring of the conductive contact surface of the wiring terminal and the conductive rod of a traditional cable connector is solved, and the service life of the cable connector is prolonged. In the present embodiment, the cross sections of the through hole and the positioning cavity are both circular. As shown in fig. 7, the first abutment surface 211 and the second abutment surface 212 are both circular in cross section and have a diameter smaller than that of the second abutment surface, which can better prevent the terminal from being tilted when it is mounted.

First butt face is located the through-hole and with the binding post butt, because binding post offers the location chamber that is linked together with the through-hole, the second butt face is located the location intracavity and with binding post butt, make connecting bolt simultaneously through first butt face and second butt face and binding post butt, again because there is the contained angle between first butt face and the second butt face, first butt face is not coplane with the second butt face promptly, thereby make connecting bolt and binding post's area of contact great, the problem of contact failure between binding post and the conducting rod has been solved, the life of cable connection head has been improved.

In order to improve the overcurrent capacity of the cable connector, in one embodiment, the second abutting surface is a tapered inclined surface. The positioning cavity is of a cavity structure matched with the conical inclined plane, namely a conical fit surface matched with the second butt surface is formed on the inner wall of the positioning cavity, so that the second butt surface is in close contact with the inner wall of the positioning cavity, the hidden danger that the cable connector inclines relatively between the wiring terminal and the connecting bolt in the installation process is effectively avoided, the contact area of the wiring terminal and the connecting bolt is increased, and the overcurrent capacity of the cable connector is improved. In this embodiment, the second abutting surface is a frustum-shaped profile structure, so that the second abutting surface and the positioning cavity are in centered abutting connection better.

In order to improve the overcurrent capacity of the cable connector, in one embodiment, the tapered inclined surface is provided at an end of the abutting portion adjacent to the second screwing portion. When connecting bolt wore to locate the cover downthehole, first butt face and second butt face can butt in binding post's inner wall simultaneously, have improved cable joint head's overcurrent ability. In one embodiment, the diameter of the cross section of the tapered inclined surface is gradually reduced towards the direction away from the conductive rod, so that the situation that the wiring terminal is installed on the connecting bolt to swing can be prevented better.

In order to make the second abutting surface accurately aligned and abutted with the inner wall of the positioning cavity and make the abutting area of the second abutting surface and the inner wall of the positioning cavity larger, in one embodiment, the angle of the conical inclined surface is 45-85 degrees, so that the second abutting surface is accurately aligned and abutted with the inner wall of the positioning cavity, and the abutting area of the second abutting surface and the inner wall of the positioning cavity is larger. In the embodiment, the angle of the conical inclined surface is 60 degrees, so that the abutting area of the second abutting surface and the inner wall of the positioning cavity is larger, and the anti-inclination installation performance is better.

As shown in fig. 12, in order to improve the current passing capability of the connecting bolt, in one embodiment, the cable connector further includes a nut 250, which is sleeved on the second screwing portion and is in threaded connection with the second screwing portion. Referring to fig. 10, the connecting terminal is further provided with an accommodating cavity 234 communicated with the through hole, and the nut is located in the accommodating cavity and abutted to the connecting terminal, so that the connecting terminal is in close contact with the nut, the connecting terminal can be electrically connected with the connecting bolt through the nut, and the overcurrent capacity of the connecting bolt is improved. In this embodiment, the receiving cavity is formed in the end surface of the terminal adjacent to the anti-release member. The nut is axially provided with a threaded hole 252 which is in threaded connection with the second threaded part, so that the nut is sleeved on the second threaded part and is in threaded connection with the second threaded part, and the nut has better strength. In other embodiments, the threaded hole may not be limited to being open in the axial direction of the nut.

In one embodiment, as shown in fig. 12, the outer wall of the nut is provided with a spherical convex surface 253. Referring to fig. 10, the inner wall of the accommodating cavity is formed with a spherical concave surface 234a matched with the spherical convex surface, so that the contact area between the nut and the inner wall of the accommodating cavity is larger, the contact between the wiring terminal and the nut is tighter, the contact area between the wiring terminal and the connecting bolt is increased, and the overcurrent capacity of the cable connector is enhanced. In this embodiment, the spherical convex surface is disposed at one end of the nut, so that the spherical convex surface is better abutted against the inner wall of the accommodating cavity. In one embodiment, the outer wall of the nut is provided with a tightening portion so that the nut is tightened to the second screw-connection portion by turning the tightening portion with a tool. In the present embodiment, the tightening part has an outer hexagonal prism structure so that the tightening part is screwed by a wrench. In other embodiments, the tightening part may also be a hexagon socket or a spline hole. In this embodiment, the spherical concave surface has a concave arc-shaped inner cavity structure. The spherical convex surface is in a convex arc fitting surface structure, so that the spherical convex surface is in close contact with the spherical concave surface.

In one embodiment, the area and the thickness of the through hole position of the wiring terminal are increased, the conical inner cavity is arranged at the entrance of the through hole of the wiring terminal, the conical fit surface matched with the conical inner cavity is arranged on the conductive bolt, and during connection, the conical fit surface of the conductive bolt is in close contact with the conical inner cavity on the through hole of the wiring terminal, so that the hidden danger that the wiring terminal inclines relative to the conductive bolt in the installation process can be effectively avoided, the contact area of the wiring terminal and the conductive bolt can be increased, and the overcurrent capacity is enhanced. In addition, the exit of binding post through-hole sets up concave arc inner chamber, adds the convex arc's of a cooperation concave arc inner chamber nut on the conductive bolt, and convex arc nut arranges in binding post's through-hole, and the convex arc of convex arc nut agrees with the face and the concave arc inner chamber in close contact with of binding post mounting hole exit, has further increased binding post and conductive bolt's area of contact, has improved cable connector's overcurrent ability.

As shown in fig. 11, in one embodiment, the end of the anti-release member adjacent to the terminal is provided with a first unidirectional reverse slopping ring gear 242. Referring also to fig. 9, the terminal is provided with a second unidirectional reverse slopping ring gear 235 at an end portion thereof adjacent to the anti-release member. The first one-way non-return bevel gear ring is abutted with the second one-way non-return bevel gear ring.

When the anti-loosening element rotates relative to the second screwing part towards the direction close to the wiring terminal, the first one-way non-return bevel gear ring and the second one-way non-return bevel gear ring slide relatively. When the anti-loosening element rotates relative to the second screwing part towards the direction far away from the wiring terminal, the first one-way non-return bevel gear ring and the second one-way non-return bevel gear ring are mutually clamped, so that the anti-loosening element can only rotate towards the direction close to the wiring terminal, even if the anti-loosening element can only rotate towards the direction for locking the wiring terminal, the anti-loosening element is effectively prevented from loosening, and the wiring terminal is reliably connected onto the connecting bolt. In this embodiment, the contact surfaces of the anti-loosening element and the connecting terminal are respectively provided with a matched one-way non-return bevel gear ring to play a role in one-way rotation stopping. Specifically, when the anti-loosening element rotates in the positive direction in the screwing direction, the one-way non-return inclined gear ring does not limit the rotation of the anti-loosening element. When the anti-loosening element reversely rotates in the unscrewing direction, the one-way non-return bevel gear ring limits the rotation of the anti-loosening element, so that the anti-loosening element can be prevented from loosening when used for a long time or vibrated.

In one embodiment, the first reverse bevel gear ring is arranged around the second threaded hole. The second one-way non-return inclined gear ring is arranged around the through hole, so that the first one-way non-return inclined gear ring is in better abutting contact with the second one-way non-return inclined gear ring.

As shown in fig. 11, in one embodiment, the first non-return bevel gear ring is convexly provided with a plurality of bevel teeth 242a, and the plurality of bevel teeth are distributed at intervals along the circumferential direction of the second threaded hole. Each helical tooth is provided with a first inclined surface. In one embodiment, the second unidirectional reverse rotation preventing bevel gear ring is provided with a plurality of bevel gear grooves 235 a. In this embodiment, the inner wall of each oblique tooth slot is provided with a second oblique plane, and the inclination angle of the second oblique plane is 3 ° to 8 °. The second inclined surface of each helical tooth is in adaptive butt joint with the corresponding first inclined surface, so that the first one-way non-return helical gear ring is in butt joint with the second one-way non-return helical gear ring.

As shown in fig. 4, in one embodiment, the cable connector further includes a plug 260, and the plug defines a third threaded hole 262. And at least part of the second screwing part is positioned in the third threaded hole and is in threaded connection with the plug. The plug with locking piece butt makes the plug spacing locking piece on second screwed portion to prevent that locking piece from loosening in second screwed portion, play the effect that prevents locking piece pine and take off. In this embodiment, the plug is an insulating plug, so that the plug has insulation. In one embodiment, the plug abuts against the end of the anti-loosening element, which is away from the connection terminal, so that the plug abuts against the anti-loosening element better. In this embodiment, the end cap is insulating end cap, makes the end cap have insulating nature, and the end cap butt avoids directly touching the anti-loosening member in the use and has the situation of electrocuteeing in the one side that deviates from binding post of anti-loosening member.

As shown in fig. 2, in one embodiment, the cable connector further includes a protective sleeve 270, and the protective sleeve covers the outer walls of the connection terminal and the conductive rod, so that the connection terminal and the conductive rod are located in the protective sleeve, and the risk of electric shock when a user directly touches the connection terminal and the conductive rod is avoided. In this embodiment, part lag still coats in binding post and cable junction's position department and on the cable, has improved the safety in utilization of cable joint head.

In one embodiment, the cable connector further includes a plug and a protective sleeve. The plug is an insulating plug. And the plug is provided with a third threaded hole. And at least part of the second screwing part is positioned in the third threaded hole and is in threaded connection with the plug. The plug with locking piece butt makes the plug spacing locking piece on second screwed portion to prevent that locking piece from loosening in second screwed portion, play the effect that prevents locking piece pine and take off. The lag wraps the outer wall in binding post, conducting rod and end cap respectively, makes binding post and conducting rod be located the lag, avoids the user to touch binding post and conducting rod directly in the use and has the risk of electrocuteeing. The protective sleeve and the plug are arranged on the cable connector together, so that the connecting terminal, the conductive rod and the connecting bolt are prevented from being exposed directly, and the use safety of the cable connector is improved.

In one embodiment, the first external thread and the second external thread are respectively arranged at two ends of the copper split body. In one embodiment, the third external thread and the fourth external thread are respectively arranged at two ends of the steel split body, so that a first connecting thread and a second connecting thread are respectively formed at two ends of the assembled connecting stud.

In one embodiment, the copper split body and the steel split body are both in a strip-shaped structure, so that the connecting bolt forms a strip-shaped stud structure after the copper split body and the steel split body are spliced. In the present embodiment, the first connecting thread and the second connecting thread are formed at both end portions of the connecting bolt in the axial direction, respectively.

In this embodiment, the conductive bolt is formed by combining a quarter copper sub-body and a three-quarter steel sub-body. In other embodiments, a combination of one-half copper sub-body and one-half steel sub-body, a combination of three-quarter copper sub-body and one-quarter steel sub-body, or a combination of other proportions may also be adopted according to actual needs.

In one embodiment, the copper body is provided with a first abutting table, and the first abutting table is located between the first external thread and the second external thread. The steel components of a whole that can function independently are equipped with second butt platform, second butt platform be located the third external screw thread with between the fourth external screw thread, second butt platform with first butt platform corresponds, makes the connecting bolt after the grafting equipment be formed with be used for with the boss structure of binding post butt to increase connecting bolt and binding post's area of contact, improved connecting bolt's current capacity. In this embodiment, the first abutment stage and the second abutment stage together form the abutment of the connecting bolt.

In one embodiment, the number of the connecting bolts of the cable connectors is two, and the conductive rods are electrically connected with the two connecting bolts respectively, so that the conductive rods are electrically connected with the corresponding cables respectively through the two connecting bolts, and the conductive rods can be electrically connected with the two cables simultaneously, so that each cable connector can be electrically connected with the two cables simultaneously.

As shown in fig. 5, in one embodiment, the conductive rod is T-shaped, such that a first end 220a of the conductive rod is electrically connected to the cabinet, a second end 220b is electrically connected to one of the cables, and a third end 220c is electrically connected to the other cable. The line between the second end and the third end is perpendicular to the extending direction of the first end. In this embodiment, the second end and the third end have the same structure and are connected to the corresponding connecting bolts in a threaded connection manner. In one embodiment, the current conducting rods are respectively electrically connected with the cabinet body and the two connecting bolts.

As shown in fig. 5, in one embodiment, the conductive rod includes an insertion portion 222, a connection portion 223, a socket portion 224, and a conductive body 225. The insertion part is inserted into the cabinet body and electrically connected with the cabinet body. The connecting part is connected with the inserting part, and the inserting part and the connecting part are coaxially arranged, so that the structure of the conductive rod is simpler and the conductive rod is easy to manufacture and process.

As shown in fig. 5, in one embodiment, the connecting portion is connected to the cabinet, so that the conductive rod is connected to the cabinet. The socket portion is connected to an end portion of the connecting portion that is away from the insertion portion. The axial direction of the sleeve joint part is perpendicular to the axial direction of the connecting part. The sleeve portion has a sleeve hole 224a formed in an axial direction thereof. The conductive main body is arranged in the sleeve hole in a penetrating mode and connected with the sleeve part, and two ends of the conductive main body are electrically connected with the two connecting bolts respectively. In this embodiment, two ends of the conductive body are respectively screwed with the corresponding connecting bolts, so that the two ends of the conductive body are respectively electrically connected with the two connecting bolts. In one embodiment, the two ends of the conductive body are respectively provided with a first threaded hole, so that the two ends of the conductive body can be respectively screwed with the corresponding connecting bolts.

In one embodiment, the area of the cross section of the conductive main body decreases from the axial end part to the middle position, and the sleeve joint part is sleeved at the middle position of the conductive main body. The sleeve joint part is sleeved at the middle position of the conductive main body, so that the sleeve joint part is connected at the middle position of the conductive main body, the weight of the conductive main body is gradually reduced from the axial end part to the middle position, and the bending strength of the conductive main body is improved. In this embodiment, the axial direction of the conductive body and the cross-sectional direction of the cross-section are perpendicular to each other. The conductive body extends in an axial direction from one axial end to the other axial end. The intermediate position of the conductive body is located at an intermediate position where the conductive body extends in the axial direction. The cross section of any cross section of the conductive body is circular, and the area of the cross section of each of the two axial end parts of the conductive body is smaller than that of the cross section of the middle position of the conductive body.

According to the conductive rod, the cable connector and the high-voltage switch cabinet, the connecting part is respectively connected with the inserting part and the sleeving part, the connecting part and the inserting part are coaxially arranged, the sleeving part is connected with the inserting part through the connecting part, the inserting part is inserted into the cabinet body and is electrically connected with the cabinet body, the sleeving part is connected to the cabinet body sequentially through the connecting part and the inserting part, and therefore the sleeving part is electrically connected with the cabinet body. Because the trepanning has been seted up to the axial of cup jointing portion, electrically conductive main part wears to locate the trepanning and is connected with cup jointing portion, makes electrically conductive main part along the axial installation of cup jointing portion, again because the axial of cup jointing portion is mutually perpendicular with the axial of connecting portion, makes electrically conductive main part install occupy the space of cable connector depth direction after cup jointing portion less, and the moment of flexure that the cable connector receives after electrically conductive main part is connected with connecting bolt is less like this to make cable connector non-deformable even damage. Because the two ends of the conductive main body are respectively electrically connected with the two connecting bolts, the conductive main body can be simultaneously electrically connected with the two connecting bolts and is connected to the corresponding wiring terminals through the two connecting bolts, so that the cable connector can be simultaneously connected with the two wiring terminals to be simultaneously electrically connected to two different cables. The cable connector overcomes the defect that the traditional cable connector can only be connected with the conductive rod in series along the direction of connecting the conductive rod with the cabinet body, and solves the problem of poor electric connection contact of the cable.

In order to reliably connect the conductive body with the socket, in one embodiment, the outer wall of the conductive body is formed with a first mounting thread. The inner wall of the trepanning is provided with a second mounting thread matched with the first mounting thread, so that the conductive main body is in threaded connection with the sleeving part, and the conductive main body is reliably connected with the sleeving part.

It will be appreciated that in other embodiments, the conductive body is not limited to being attached to the inner wall of the trepan bore by a threaded connection. In one embodiment, the conductive main body is clamped on the inner wall of the sleeve hole, so that the conductive main body and the sleeve part can be quickly assembled and disassembled. Of course, in order to firmly connect the conductive body and the socket, in one embodiment, the conductive body is further welded to the socket, so that the conductive body and the socket are firmly connected together.

In order to better insert the insertion portion into the cabinet body and facilitate the centering of the insertion portion into the cabinet body, in one embodiment, the insertion portion is of a frustum structure, so that the insertion portion is better inserted into the cabinet body and the centering of the insertion portion into the cabinet body is facilitated.

In one embodiment, a first threaded hole is formed in an end portion of each conductive body, and the first threaded hole is used for being in threaded connection with the corresponding connecting bolt, so that the end portion of each conductive body is firmly connected with the corresponding connecting bolt. In this embodiment, the first threaded hole is a first threaded hole. In one embodiment, the two ends of the conductive body are respectively provided with a first threaded hole, so that the two ends of the conductive body can be respectively screwed with the corresponding connecting bolts.

As shown in fig. 5 and 6, in one embodiment, the conductive body includes a conductive shell 225a, a first core 225b, and a second core 225 c. The conductive shell is arranged in the sleeve hole in a penetrating mode and is connected with the sleeve part. A first accommodating cavity 2252 and a second accommodating cavity 2253 are formed at two ends of the conductive housing, respectively. The first core is located in the first accommodating cavity and connected with the conductive shell. The second core body is positioned in the second accommodating cavity and connected with the conductive shell body, so that the conductive shell body is electrically connected with the first core body and the second core body respectively. The first core body and the second core body are used for being electrically connected with the two connecting bolts respectively, namely the first core body is electrically connected with one of the connecting bolts, the second core body is electrically connected with the other connecting bolt, so that the conductive shell is electrically connected with the two connecting bolts respectively, and two ends of the conductive main body are electrically connected with the two connecting bolts respectively. In this embodiment, the first core and the second core are both provided with a first threaded hole. In this embodiment, first screw hole has been seted up to the one end that deviates from the second core of first core, and the one end that deviates from the first core of second core has seted up first screw hole, makes first core and second core respectively with corresponding connecting bolt spiro union.

In one embodiment, the first accommodating cavity is communicated with the second accommodating cavity, so that the conductive shell is light in weight. In order to improve the connection strength of the conductive shell, in one embodiment, a plurality of reinforcing ribs are arranged on the inner wall of the conductive shell, so that the conductive shell has better connection strength. In this embodiment, a plurality of strengthening ribs are distributed along the circumference interval of electrically conductive casing, make the joint strength of each position of electrically conductive casing comparatively even.

In one embodiment, the conductive housing is detachably connected to the first core and the second core, respectively. When needing to maintain or change first core, can lift off first core from electrically conductive casing, like the same, when needing to maintain or change the second core, can lift off the second core from electrically conductive casing, improved the convenience of use nature of collector bar. Because first core and second core all can be dismantled alone and change, avoid the whole problem that changes and lead to the cost height of electrically conductive casing. In this embodiment, the conductive shell is respectively connected to the first core and the second core by plugging. In one embodiment, the conductive shell is provided with a first slot and a second slot, the first slot is communicated with the first accommodating cavity, and the second slot is communicated with the second accommodating cavity. The first core is located in the first accommodating cavity and inserted into the first slot, so that the conductive shell is connected with the first core in a plugging mode. The second core body is positioned in the second accommodating cavity and inserted into the second slot, so that the conductive shell body is connected with the second core body in a plugging mode.

It is understood that in other embodiments, the conductive housing is not limited to being plugged into and unplugged from the first core and the second core, respectively. In one embodiment, the conductive shell is respectively screwed with the first core and the second core, so that the first core and the second core are both reliably connected in the conductive shell.

As shown in fig. 6, in one embodiment, the high voltage switch cabinet further includes a locking member (not shown), the connecting portion has a connecting hole 223a, the cabinet body has a fixing hole, and the locking member is respectively inserted into the connecting hole and the fixing hole, so that the connecting portion is fixedly connected to the cabinet body through the locking member.

In order to make the high-voltage switch cabinet electrically connected to a plurality of different cables simultaneously and make full use of the space of the cabinet body, in one embodiment, the number of the cable connectors is multiple, and the cable connectors are arranged on the cabinet body in a staggered manner, so that the high-voltage switch cabinet can be electrically connected to a plurality of different cables simultaneously and the space of the cabinet body is made full use of.

Compared with the traditional cable connector, the cable connector has the following advantages:

1) the current-conducting rod of cable connector adopts T type structure, and the internal portion of high tension switchgear's cabinet is connected to the one end of current-conducting rod, and a binding post is connected respectively at both ends in addition to realize one and advance two and go out, two binding post can be connected simultaneously to a cable connector promptly, and can not influence cable connector's structural stability, also can not increase its occupation space in the depth direction.

2) The structure of the connecting bolt and the connecting terminal is changed, the contact area is increased, and the connecting terminal is prevented from inclining during installation. Increase area and the thickness of binding post through-hole one end, set up the toper inner chamber at the entrance of binding post through-hole, set up the toper coincidence face of cooperation toper inner chamber on the connecting bolt, during the connection, the toper coincidence face of connecting bolt and the toper inner chamber in close contact with on the binding post through-hole can effectively stop the relative connecting bolt of binding post in the installation and take place the hidden danger of slope, and can increase binding post and connecting bolt's area of contact, reinforcing ability of overflowing. In addition, the exit of binding post through-hole sets up concave arc inner chamber, adds the convex arc nut of a cooperation concave arc inner chamber on the connecting bolt, and in the convex arc nut was arranged binding post's through-hole in, and the convex arc of convex arc nut agrees with the face and the concave arc inner chamber in close contact with in binding post through-hole exit, can further increase binding post and connecting bolt's area of contact, reinforcing cable joint head's ability of overflowing.

3) And changing the material of the connecting bolt. The connecting bolt adopts the mode that copper combines with stainless steel mutually, when giving consideration to connecting bolt intensity, has increased connecting bolt's the ability of overflowing, reduces and generates heat.

4) And the contact surfaces of the anti-loosening piece and the wiring terminal are respectively provided with a matched one-way non-return bevel gear ring. When the locking piece rotates forwards in the screwing direction, the one-way reverse-stopping bevel gear ring cannot limit the rotation of the locking piece, and when the locking piece rotates reversely in the screwing direction, the one-way reverse-stopping bevel gear ring can limit the rotation of the locking piece, so that the locking piece can be prevented from loosening when being used for a long time or vibrated.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims (10)

1. A coupling bolt having a first coupling thread and a second coupling thread formed on an outer wall thereof, the coupling bolt comprising:

the copper split body is provided with a first external thread and a second external thread on the peripheral wall, and the cross section of the copper split body is in a fan shape;

a groove is formed in one surface, adjacent to the copper split body, of the steel split body, a protrusion is arranged on one surface, adjacent to the steel split body, of the copper split body, and the protrusion is inserted into the groove; a third external thread and a fourth external thread are arranged on the peripheral wall of the steel split body; the third external thread is used for being connected with the first external thread when the steel split body and the copper split body are spliced, so that the first external thread and the third external thread jointly form the first connecting thread; the fourth external thread is used for being jointed with the second external thread when the steel split body and the copper split body are spliced, so that the second external thread and the fourth external thread jointly form the second connecting thread; the cross section of the steel split body is in a fan shape.

2. The connecting bolt as defined in claim 1, wherein the projection extends in an axial direction of the copper sub-body, and the groove is opened in an axial direction of the steel sub-body.

3. The coupling bolt as defined in claim 2, wherein the projection is bent in cross-section.

4. The connecting bolt according to claim 1, wherein the protrusions include a first protrusion and a second protrusion, and the first protrusion and the second protrusion are symmetrically disposed on the copper body; the groove comprises a first groove and a second groove, the first protrusion is inserted into the first groove, and the second protrusion is inserted into the second groove.

5. A connecting bolt according to any one of claims 1 to 4, characterised in that the copper sub-bodies and the steel sub-bodies are both elongate structures.

6. The connecting bolt according to any one of claims 1 to 4, wherein the first external thread and the second external thread are respectively provided at both ends of the copper sub-body, and the third external thread and the fourth external thread are respectively provided at both ends of the steel sub-body.

7. The connecting bolt of claim 6, wherein the copper sub-body is provided with a first abutment land, the first abutment land being located between the first external thread and the second external thread; and the steel split body is provided with a second abutting table, and the second abutting table is positioned between the third external thread and the fourth external thread.

8. A cable connector comprising a connecting bolt according to any one of claims 1 to 7.

9. The cable connector according to claim 8, further comprising a conductive rod, a connection terminal and a locking member, wherein the conductive rod is provided with a first threaded hole, the first connection thread is located in the first threaded hole and is in threaded connection with the conductive rod, the connection terminal is provided with a through hole, the connection bolt is inserted into the through hole, the locking member is provided with a second threaded hole, and the second connection thread is located in the second threaded hole and is in threaded connection with the locking member.

10. A high-voltage switchgear, characterized in that it comprises a cabinet body and a cable connector according to claim 8 or 9.

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