CN114744442A - Quick access device of 0.4kV low pressure uninterrupted power operation cable - Google Patents
Quick access device of 0.4kV low pressure uninterrupted power operation cable Download PDFInfo
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- CN114744442A CN114744442A CN202210471271.XA CN202210471271A CN114744442A CN 114744442 A CN114744442 A CN 114744442A CN 202210471271 A CN202210471271 A CN 202210471271A CN 114744442 A CN114744442 A CN 114744442A
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- threaded rod
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- 239000000741 silica gel Substances 0.000 claims description 7
- 229910002027 silica gel Inorganic materials 0.000 claims description 7
- 239000011810 insulating material Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000003825 pressing Methods 0.000 description 11
- 239000012212 insulator Substances 0.000 description 10
- 238000009434 installation Methods 0.000 description 7
- 239000004020 conductor Substances 0.000 description 5
- 238000010079 rubber tapping Methods 0.000 description 5
- 238000009413 insulation Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000016507 interphase Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 230000000149 penetrating effect Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/627—Snap or like fastening
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
- H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
- H01R11/12—End pieces terminating in an eye, hook, or fork
- H01R11/14—End pieces terminating in an eye, hook, or fork the hook being adapted for hanging on overhead or other suspended lines, e.g. hot line clamp
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/6205—Two-part coupling devices held in engagement by a magnet
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Abstract
The invention provides a low-voltage uninterrupted operation cable quick access device, and belongs to the technical field of electric power operation and maintenance. The low-voltage uninterrupted power operation cable quick access device comprises a clamp unit, an insulating rod and a diversion cable; the clamp unit comprises a clamping plate, a clamping block, a threaded rod and a binding post; the clamping plate is in an inverted U shape, the clamping block is arranged in the clamping plate, and one end of the clamping block is rotationally connected with the threaded rod; the threaded rod is in threaded connection with the clamping plate; the binding post is a stud and is fixedly arranged on the outer side of the clamping plate; one end of the insulating rod is connected with one end of the threaded rod, which is far away from the clamping block; the diversion cable is fixedly connected with the binding post through a wiring terminal; the end of the threaded rod, which is far away from the clamping block, is fixedly provided with a prismatic rod, the end of the insulating rod, which is close to the threaded rod, is provided with a prismatic hole matched with the prismatic rod, and the prismatic rod and the prismatic hole are arranged in a clearance fit manner and are fixed in a magnetic attraction manner. The invention can rapidly connect the low-voltage bypass cable into the low-voltage equipment without power failure and can overhaul the low-voltage equipment without power failure.
Description
Technical Field
The invention belongs to the technical field of electric power operation and maintenance, and particularly relates to a 0.4kV low-voltage uninterrupted operation cable quick access device.
Background
The bypass power supply method is that when the low-voltage equipment needs to be stopped due to the conditions of transformation, maintenance and the like, a bypass cable is laid independently, and power supply equipment such as a mobile box transformer substation utilizes the bypass cable to temporarily supply power to the low-voltage equipment. One end of the bypass cable is connected with the power supply equipment, and the other end of the bypass cable is connected with a busbar of low-voltage equipment such as a power distribution cabinet and a tapping box. However, the distance between the busbar of the low-voltage equipment is short, the safety distance is short, and danger is easy to occur when the bypass cable is connected into the busbar of the low-voltage equipment under the condition of no power failure. In order to reduce the impact of power failure on low-voltage users, a method for quickly connecting a bypass cable to low-voltage equipment without power failure is needed.
For example, patent document CN215418797U proposes a rotary compression type bus bar lock lever, which includes a locking head and an insulating rod, wherein the locking head includes a U-shaped head and a pressing block disposed in the U-shaped head, the U-shaped head is provided with a first arm, a second arm and a base, and the first arm is provided with an extending portion bending towards the second arm; a space is arranged between the extension part and the second support arm; an accommodating space is formed among the extension part, the first support arm and the base, the pressing block is rotatably arranged in the accommodating space, a rotating shaft which penetrates through the base and is connected with the pressing block and the extension part is arranged on the insulating rod, the rotating shaft and the pressing block are eccentrically arranged to form a pressing part on the pressing block, when the pressing block eccentrically rotates, the pressing part rotates to be opposite to the second support arm, a clamping gap is formed between the pressing part and the second support arm, and the rotating shaft is rotatably fixed on the base; the base is provided with a connecting part for connecting and conducting the bypass cable, and the locking head is insulated from at least one end surface of the connecting part, the second support arm and the pressing block, so that a conductive surface is formed on the end surface of the second support arm opposite to the pressing block. However, after the locking bar locks the busbar, the weight of the insulating bar acts on the busbar through the lever principle, and the busbar may be bent or fall off.
For another example, patent document CN211743440U proposes a quick connection device for a low-voltage bypass cable, which includes a busbar connection rod and a screw rod; a clamp is arranged on the side part of one end of the busbar connecting rod, an electric connector is arranged on the other end of the busbar connecting rod, and a threaded hole B is formed in the end part of the electric connector; the clamp comprises a clamp jaw and a clamp, wherein the clamp jaw of the clamp faces away from a busbar connecting rod, a clamping block is arranged on the side wall of one side, close to a power connection head, in the clamp, the clamping block is connected with a threaded hole A formed in the side wall of one side, close to the power connection head, of the clamp through threads, a polygonal column notch is formed in the end part, connected with the clamp, of the clamping block, a polygonal column A matched with the polygonal column notch is formed in one end of a screwing rod, and an operation cross rod is arranged at the other end of the screwing rod; the jaw surface, the surface of the clamping block, the surface of the polygonal column notch and the end face of the electric connector of the busbar connecting rod are exposed, and the rest surfaces of the busbar connecting rod are coated with insulating layers A; the surface of the polygonal column A of the screwing rod is exposed, and the rest surfaces of the screwing rod are coated with insulating layers C. The device utilizes female connecting rod of arranging and extension bar to realize the bypass power supply, arranges the inside conductor that is of connecting rod and extension bar female, and weight is heavy, also causes female bending of arranging or drops easily.
Disclosure of Invention
The invention aims to solve the technical problem of providing a 0.4kV low-voltage uninterrupted operation cable quick access device aiming at the defects of the prior art.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a low-voltage uninterrupted operation cable quick access device comprises a clamp unit, an insulating rod and a diversion cable;
the clamp unit is used for clamping the busbar and comprises a clamping plate, a clamping block, a threaded rod and a binding post; the clamping plate is in an inverted U shape, the clamping block is cylindrical and is arranged in the clamping plate, and one end of the clamping block is rotatably connected with the threaded rod; the threaded rod is in threaded connection with the clamping plate; the binding post is a stud and is fixedly arranged on the outer side of the clamping plate;
the insulating rod is used for controlling the clamp unit to clamp, and one end of the insulating rod is connected with one end of the threaded rod, which is far away from the clamping block;
the diversion cable is used for communicating the busbar with the bypass cable and is fixedly connected with the binding post through a wiring terminal;
the clamp comprises a clamp block and a threaded rod, wherein a prismatic rod is fixedly arranged at one end, far away from the clamp block, of the threaded rod, prismatic holes matched with the prismatic rod are formed in one end, close to the threaded rod, of the insulating rod, and the prismatic rod and the prismatic holes are arranged in a clearance fit mode and fixed in a magnetic attraction mode.
Furthermore, the device also comprises a clamping plate sheath, a clamping block sheath, a wiring terminal shield and a threaded rod shield;
the splint sheath is made of soft silica gel and is wrapped on the splint; the clamping block sheath is made of soft silica gel and wraps the outer side of the clamping block; the wiring terminal shield is made of insulating materials and covers the wiring terminal and the wiring terminal; the threaded rod shield is made of an insulating material, is fixedly connected with the insulating rod and covers the outer side of the threaded rod;
a boss is arranged on the side wall of the clamping plate opposite to the clamping block, and the height of the boss is consistent with the thickness of the clamping plate sheath; the positions of the clamp plate sheath corresponding to the bosses are provided with holes for the bosses to extend out in a hollow way; the material of the boss is consistent with that of the clamping plate;
the side that the terminal guard shield with splint contact is provided with outer edge, splint sheath is still wrapped up outer edge.
Furthermore, the insulating rod is close to the holding end and is fixedly provided with a wire clamp used for temporarily fixing the diversion cable.
Furthermore, the free end of the prismatic rod is thin; the end face of the free end of the prismatic rod is circular, the end face of one end connected with the threaded rod is equiangular and equiangular, and the cross section gradually changes into a circle in the process of extending to the free end.
Furthermore, the clamping plate and the connecting terminal are made of copper.
Furthermore, a handle convenient to operate is arranged at the holding end of the insulating rod.
In the prior art, when the bypass cable is connected to the busbar without power failure, the insulating operating rod is mostly used for operating the busbar clamped by the clamping part. Because operate under the circumstances of not having a power failure, consequently operating personnel must keep safe distance with female arranging, consequently the length of insulating bar also should satisfy safe distance's needs, therefore the length of insulating bar is longer.
Among the prior art, for the increase of strength, insulating rod and the equal detachable connection of clamping part, under this kind of condition, accomplish the centre gripping back to female arranging, if loosen holding to the insulating rod, the weight of insulating rod will be used in female arranging, under the effect of lever principle, very easily causes female bending or droing of arranging. When the busbar is positioned in the equipment box on the ground, other objects can be adopted to support the holding end of the insulating rod, but the method is not used for the higher busbar. Adopt detachable machanism between the insulator spindle of this application and the anchor clamps unit, can demolish the insulator spindle after the centre gripping of completion to female arranging, can install the insulator spindle again when the bypass is connected to needs demolish. Meanwhile, the insulating rod is mainly used for rotating the threaded rod to realize clamping, too high connection strength is not needed between the insulating rod and the clamp unit, and only the insulating rod and the threaded rod can be synchronously rotated. Therefore, synchronous rotation performance is achieved by the aid of the prismatic rod and the prismatic hole, the prismatic rod is connected by the aid of magnetic attraction, and the prismatic rod cannot be separated from the prismatic hole under normal conditions.
In addition, a cable for connecting the bus bar is also connected to the front end of the insulating rod, and the weight of the cable is applied to the front end of the insulating rod, so that the cable is very inconvenient to hold or operate particularly in the case that the insulating rod is long. And this application is fixed the cable at the end of gripping of insulator spindle through the fastener to alleviate the weight of front end, it is comparatively laborsaving during messenger's operation.
Compared with the prior art, the invention has the following beneficial effects:
the invention can communicate the bypass cable with the busbar of the low-voltage equipment, can quickly connect the low-voltage bypass cable into the low-voltage equipment without power failure, can overhaul the low-voltage equipment without power failure, and realizes continuous and reliable power supply for low-voltage users during distribution network overhaul. The invention can effectively solve the problem that the prior distribution network can not be electrified to be accessed and needs to be powered off first and then temporarily to supply power during maintenance, and has wide practical significance and popularization value.
According to the invention, the detachable magnetic suction connecting structure is adopted between the insulating rod and the clamp unit, so that after the clamp unit clamps the busbar, the insulating rod can be pulled outwards to separate the insulating rod from the clamp unit, and the phenomenon that the weight of the insulating rod acts on the busbar to bend or fall off is avoided. In this case, the insulating rod can be made longer, and a safe distance can be secured during live working.
The clamp unit is insulated and protected by the components such as the clamping plate sheath, the binding post shield and the like, so that no exposed conductor exists on the outer side of the clamp unit, and the interphase short circuit or grounding caused by the fact that the conductor touches other bus bars or box bodies can be avoided. The clamping plate is characterized in that the clamping plate is provided with a clamping rod, the clamping rod is arranged in the clamping plate, and the clamping rod is connected with the clamping plate through a screw rod.
According to the invention, the wire clamp is arranged at the position, close to the holding end, of the insulating rod, and the diversion cable can be temporarily fixed on the wire clamp.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
FIG. 1: the invention discloses a schematic diagram of a low-voltage equipment tapping box to be connected;
FIG. 2: the structure of embodiment 1 of the invention is schematically shown;
FIG. 3: the structure of the clamp unit in embodiment 1 of the invention is schematically shown;
FIG. 4: embodiment 1 of the present invention is a schematic view of connection between a clamp unit and an insulating rod;
FIG. 5: a cross-sectional view of inventive example 1;
FIG. 6: embodiment 2 of the invention one of the structure schematic diagrams of the clamp unit;
FIG. 7: the second structure of the clamp unit in embodiment 2 of the present invention;
FIG. 8: a cross-sectional view of embodiment 2 of the invention;
FIG. 9: assembly schematic of embodiment 2 of the invention;
FIG. 10: the structure of embodiment 3 of the invention is schematically illustrated;
FIG. 11: the structure of embodiment 4 of the invention is schematically illustrated;
wherein: 1-clamp unit, 11-clamp plate, 111-clamp plate sheath, 112-boss, 113-baffle, 12-clamp block, 121-clamp block sheath, 13-threaded rod, 131-prismatic rod, 14-terminal, 141-terminal shield, 2-insulating rod, 21-insulating handle, 22-prismatic hole, 23-magnet, 24-threaded rod shield, 25-wire clamp, 3-guide cable, 31-terminal and 4-busbar.
Detailed Description
For a better understanding of the invention, the following description is given in conjunction with the examples and the accompanying drawings, but the invention is not limited to the examples. In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details.
As shown in fig. 1, a low-voltage equipment distribution box is provided, in which busbars 4 are correspondingly arranged according to the number of phases of low-voltage cables, and the busbars 4 are arranged on the rear wall of the box body. Utilize this application can be with low pressure bypass cable and female 4 intercommunications of arranging, can not cut off the power supply and insert low pressure bypass cable low-voltage equipment, can not cut off the power supply and overhaul the low pressure distribution network equipment, realized joining in marriage when net overhauls the reliable power supply that lasts of low pressure user.
Example 1:
referring to fig. 2 to 5, the embodiment is used to provide a low-voltage cable fast access device for uninterrupted operation. As shown in fig. 2, the low-voltage uninterruptible power operation cable quick connection device comprises a clamp unit 1, an insulation rod 2 and a diversion cable 3.
The clamp unit 1 is used for clamping the device on a busbar 44 of low-voltage equipment, as shown in fig. 3, the clamp unit 1 comprises a clamping plate 11, the clamping plate 11 is in an inverted 'U' shape and comprises two parallel side plates, and the other side plate is fixedly connected between the two side plates in a perpendicular mode. The clamping block 12 is further arranged inside the clamping plate 11, the clamping block 12 is cylindrical, and the central axis of the clamping block is perpendicular to the edge side plate of the clamping plate 11. The clamp block 12 and the clamp plate 11 can be clamped on two sides of the busbar 4, a threaded rod 13 is further arranged on the clamp unit 1 for adjusting the distance between the clamp block 12 and the clamp plate 11, the threaded rod 13 is coaxial with the clamp block 12, the threaded rod 13 is rotatably connected with the clamp block 12 after penetrating through an edge side plate of the clamp plate 11, and the threaded rod 13 is in threaded connection with the clamp plate 11.
The insulating rod 2 is used for operating the clamp unit 1 for clamping and providing a necessary safety distance for workers to operate the invention. As shown in fig. 2 and 3, one end of the insulating rod 2 is connected with one end of the threaded rod 13 far away from the clamping block 12, the other end of the insulating rod is provided with an insulating handle 21 convenient to operate, the insulating handle 21 is made of rubber and is provided with anti-skid lines, and the insulating rod has good anti-skid performance. When splint 11 lock was arranged on female arranging 4, rotated insulator spindle 2, can realize the clockwise or anticlockwise rotation of threaded rod 12 to realize the regulation of distance between clamp splice 12 and the splint 11, can arrange 4 with the centre gripping of anchor clamps unit 1 on, or with anchor clamps unit 1 from arranging 4 and demolish.
The diversion cable 3 is used for communicating the busbar 4 with the bypass cable, is used for providing temporary power supply for the busbar 4 and low-voltage equipment connected with the busbar 4, and is a flexible cable. As shown in fig. 3, one end of the diversion cable 3 is provided with a connection terminal 31, the mounting end of the connection terminal 31 is plate-shaped and has a mounting hole, a terminal 14 is arranged on the middle side plate of the clamping plate 11, and the terminal 14 is a screw rod, so that the connection terminal 31 can be fixedly mounted on the terminal 14 by utilizing a nut to realize the communication with the clamping plate 11, and when the clamping plate 11 is clamped on the busbar 4, the communication with the busbar 4 is also realized. In order to ensure the communication performance with the bypass cable and provide a sufficient current capacity, the clamping plate 11 and the connecting terminal 31 of the embodiment are made of copper.
This embodiment is at the during operation, grips insulator spindle 2 and arranges splint 11 lock on female arranging 4, clockwise rotation afterwards, and clamp splice 12 will compress tightly on female arranging 4 to firmly centre gripping splint 11 is on female arranging 4, realizes diversion cable 3 and female intercommunication of arranging 4. Because insulating rod 2 is longer for guaranteeing its length of safe distance, and weight is also heavier, if unclamp gripping insulating rod 2 this moment, the weight of insulating rod 2 will act on female arranging 4 through lever principle, including female arranging 4 for copper, the material is softer, very easily causes female arranging 4 crooked, or causes female arranging 4 to drop from the mounted position.
In order to solve the above problem, the insulation rod 2 of the present embodiment is detachably connected to the threaded rod 13. As shown in fig. 4, a prismatic rod 131 is further coaxially and fixedly disposed at one end of the threaded rod 13 away from the clamping block 12, and correspondingly, a prismatic hole 22 is disposed at one end of the insulating rod 2 close to the clamping block 12, the prismatic rod 131 and the prismatic hole 22 are in clearance fit, and the prismatic rod 131 and the insulating rod 2 can synchronously rotate. After clamping with the busbar 4 is completed, the insulating rod 2 can be pulled outwards, so that the prismatic rod 131 is separated from the prismatic hole 22, and then the insulating rod 2 is detached. When the threaded rod 13 needs to be rotated, the insulating rod 2 can be operated to insert the prismatic rod 131 into the prismatic hole 22, and the installation of the insulating rod 2 is completed.
In order to prevent the clamp unit 1 from sliding off the insulating rod 2 under unnecessary conditions, the prism-shaped rod 131 and the insulating rod 2 are magnetically connected. As shown in fig. 5, a magnet 23 is disposed at the bottom of the prismatic hole 22, and the prismatic rod 131 is made of steel, so that the magnet 23 can attract the prismatic rod 131 to prevent the prismatic rod 131 from slipping out of the prismatic hole 22 in a natural state. Of course, other magnetic attraction structures can be used between the prismatic rod 131 and the insulating rod 2, such as a magnet fixed at the end of the prismatic rod 131, and a steel or iron block or another magnet with opposite polarity fixed at the bottom of the prismatic hole 22.
In order to achieve a quick mounting of the insulating rod 2, the prismatic rod 131 of this embodiment tapers from the end connected to the threaded rod 13 to the free end, and correspondingly, the prismatic hole 22 also tapers to the bottom. Meanwhile, in the process that the prismatic rod 131 continuously becomes thinner, the cross section of the prismatic rod 131 is gradually changed into a circle from an equiangular equilateral triangle, namely, one end of the prismatic rod 131, which is connected with the threaded rod 13, is prismatic, the end face of the free end of the prismatic rod is circular, and the middle of the prismatic rod is in a shape gradually changed from prismatic to cylindrical.
The rotary connection structure of the threaded rod 13 and the clamping block 12 can be clarified from fig. 5, one end of the threaded rod 13 close to the clamping block 12 is not provided with an external thread, the end is in clearance fit with the clamping block 12 after extending into the clamping block 12, a groove is circumferentially arranged at the end part, a bolt is radially arranged on the clamping block 12, and the end part of the bolt extends into the groove, so that the threaded rod 13 can be prevented from being separated from the clamping block 12.
Example 2:
referring to fig. 6 to 7, compared with embodiment 1, the low-voltage cable quick connection device for uninterrupted power operation provided in this embodiment is improved as follows: the outside of the gripper unit 1 is also protected from insulation.
Because the distance between the busbars 4 in the distribution box or the tapping box of the low-voltage equipment is small, when the insulating rod 2 is used for operating the clamp unit 1 to clamp the busbars 4, the operation is not easy, and if the operation is careless, the busbars 4 or the box bodies of other phases can be touched, so that the interphase short circuit or the grounding is caused.
In order to solve the above problem, the present embodiment provides insulation protection to the outside of the clamp unit 1, and does not conduct even when touching other busbars 4. As shown in fig. 6-8, the outer side of the clamping plate 11 is wrapped with a clamping plate sheath 111, the outer side of the clamping block 12 is wrapped with a clamping block sheath 121, the outer sides of the terminal 14 and the terminal 31 are covered with a terminal shield 141, and one side of the insulating rod 2 close to the threaded rod 13 is covered with a threaded rod shield 24.
The splint sheath 111 is made of soft silica gel and has good elasticity and insulating property, and as shown in fig. 9, the splint sheath 111 is of an integral structure and is in a flat state before being installed. The splint sheath 111 is hollowed with a strip hole, and when the splint sheath 111 is installed, the splint 11 can enter the splint sheath 111 from the strip hole to complete the sheathing. The threaded shaft 13, the terminal 14, and the terminal shield 141 are disposed in the elongated hole after the cleat housing 111 is installed.
The clamp block sheath 121 is also made of soft silica gel, is hollow cylindrical before installation, and can be sleeved on the clamp block 12. The terminal cover 141 is made of a hard insulating material, has a shape and a size matching those of the terminal 14 and the terminal 31, and can cover the terminal 14 and the terminal 31. Meanwhile, the side of the terminal hood 141 contacting the clamping plate 11 is provided with an outer edge, as shown in fig. 8, which can extend between the clamping plate 11 and the clamping plate sheath 111, and therefore, the clamping plate sheath 111 can also fix the terminal hood 141. The threaded rod shield 24 is made of hard insulating material, is in a hollow uncovered cylindrical shape, has one end fixedly connected with the end part of the insulating rod 2, and can cover the outer side of the protective threaded rod 13.
After the clamping plate sheath 111, the clamping block sheath 121, the terminal shield 141 and the threaded rod shield 24 are arranged in the embodiment, no exposed conductor exists on the outer side of the clamp unit 1, and the conductor can be prevented from touching other busbars 4.
After the installation of splint sheath 111, the inboard of splint 11 has been protected equally, certainly, in order to realize switching on with female arranging 4, this embodiment has set up boss 112 in the inboard of splint 11 and the relative curb plate of clamp splice 12, and corresponding, the corresponding position fretwork of splint sheath 111 has the hole that supplies boss 112 to stretch out. The boss 112 and the clamping plate 11 are made of the same material, and when the clamping plate 11 is clamped on the busbar 4, the boss 112 is connected with the busbar 4 in an abutting mode to achieve conduction.
The height of the boss 112 corresponds to the thickness of the splint sheath 111, and the top surface of the boss 112 is flush with the splint sheath 111. Because the silica gel material of splint sheath 111 has good anti-skidding performance, compare with embodiment 1, when clamp splice 11 lock was arranged on female arranging 4, splint sheath 111 of splint 11 inboard can contact with female arranging 4, only needs very little pressure just to have stronger frictional force between the two, even splint 11 can not be easily from female arranging 4 slippage when rotating threaded rod 13, conveniently accomplishes the centre gripping installation of anchor clamps unit 1. Meanwhile, the flush splint sheath 111 does not influence the contact conduction of the boss 112 and the busbar 4.
Example 3:
referring to fig. 10, compared with embodiment 2, the low-voltage uninterruptible power supply cable fast access device provided in this embodiment is improved as follows: the splint sheath 111 is also provided with a baffle 113.
The baffle 113 is disposed along the edge of the opening of the clamp plate sheath 111 on the side away from the insulating rod 2 and protrudes toward the insulating rod 2.
When this embodiment utilizes 2 operation fixture unit 1 of insulator spindle to arrange 4 on the centre gripping, the edge of arranging 4 can be caught on to bellied baffle 113, and fixture unit 1 can not follow mother when rotating the insulator spindle and arrange 4 slippage like this.
Example 4:
referring to fig. 11, compared with embodiment 3, the low-voltage uninterruptible power supply cable fast access device provided in this embodiment is improved as follows: the insulating rod 2 is also provided with a wire clamp 25 for temporarily fixing the diversion cable 3.
The guide cable 3 is made of copper to ensure the through-current capacity, and has a large wire diameter, so that the weight is heavy. As in embodiments 1 to 3, the diversion cable 3 is only fixedly connected to the terminal 14, the weight of the diversion cable 3 directly acts on the fixture unit 1, and particularly when the busbar 4 to be connected is high (for example, a tapping box provided on a wall), the diversion cable 3 is long, the applied weight is also heavy, and the length of the insulating rod 2 is long, so that a worker can take great effort to hold the insulating rod 2 for installation.
This embodiment is close to the fixed fastener 25 that has set up in insulating handle 21 department on insulator spindle 2, and the fixed water conservancy diversion cable 3 of fastener 25 centre gripping temporarily, and the weight of water conservancy diversion cable 3 will be applyed holding the end at insulator spindle 2 like this, can alleviate the weight of front end, makes that staff's holding is comparatively laborsaving with the operation.
On the other hand, when the current guiding cable 3 is not fixed by using the wire clamp 25, the current guiding cable 3 hangs down from the clamp unit 1, and when the insulating rod 2 is held and the clamp unit 1 is installed in the distribution box or the tapping box, the hanging current guiding cable 3 may rub or collide with other components of the box body or the lower part in the box, which may interfere with the installation of the clamp unit 1. In the embodiment, after the cable clamp 25 is used for fixing the diversion cable 3, the diversion cable 3 extends along the insulating rod 2, so that the diversion cable 3 does not interfere with the installation of the clamp unit 1.
In this embodiment, after the clamping of the clamping unit 1 is completed, the insulating rod 2 can be removed and the guide cable 3 can be detached from the clamp 25.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent substitutions made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
Claims (6)
1. The utility model provides a low pressure does not have a power failure operation cable and inserts device fast which characterized in that: the clamp comprises a clamp unit, an insulating rod and a diversion cable;
the clamp unit is used for clamping the busbar and comprises a clamping plate, a clamping block, a threaded rod and a binding post; the clamping plate is in an inverted U shape, the clamping block is cylindrical and is arranged in the clamping plate, and one end of the clamping block is rotatably connected with the threaded rod; the threaded rod is in threaded connection with the clamping plate; the binding post is a stud and is fixedly arranged on the outer side of the clamping plate;
the insulating rod is used for controlling the clamp unit to clamp, and one end of the insulating rod is connected with one end of the threaded rod, which is far away from the clamping block;
the diversion cable is used for communicating a busbar with a bypass cable and is fixedly connected with the binding post through a wiring terminal;
the clamp comprises a clamp block and a threaded rod, wherein a prismatic rod is fixedly arranged at one end, far away from the clamp block, of the threaded rod, prismatic holes matched with the prismatic rod are formed in one end, close to the threaded rod, of the insulating rod, and the prismatic rod and the prismatic holes are arranged in a clearance fit mode and fixed in a magnetic attraction mode.
2. The low-voltage uninterrupted power operation cable quick access device according to claim 1, characterized in that: the clamp plate protective sleeve is connected with the clamp plate protective sleeve through a bolt;
the splint sheath is made of soft silica gel and is wrapped on the splint; the clamping block sheath is made of soft silica gel and wraps the outer side of the clamping block; the wiring terminal shield is made of insulating materials and covers the wiring terminal and the wiring terminal; the threaded rod shield is made of an insulating material, is fixedly connected with the insulating rod and covers the outer side of the threaded rod;
a boss is arranged on the side wall of the clamping plate opposite to the clamping block, and the height of the boss is consistent with the thickness of the clamping plate sheath; the positions of the splint sheath corresponding to the bosses are hollowed with holes for the bosses to extend out; the material of the boss is consistent with that of the clamping plate;
the side that the terminal guard shield with splint contact is provided with outer edge, splint sheath is still wrapped up outer edge.
3. The low-voltage uninterrupted power operation cable quick access device according to claim 1, characterized in that: the insulating rod is close to the end of holding is fixedly provided with a wire clamp used for temporarily fixing the diversion cable.
4. The low-voltage uninterrupted power operation cable quick access device according to claim 1, characterized in that: the free end of the prismatic rod is thin; the end face of the free end of the prismatic rod is circular, the end face of one end connected with the threaded rod is equiangular and equilateral, and the cross section gradually changes into a circle in the process of extending to the free end.
5. The low-voltage uninterrupted power operation cable quick access device according to claim 1, characterized in that: the clamping plate and the connecting terminal are made of copper.
6. The low-voltage cable quick access device for uninterrupted power operation according to claim 1, characterized in that: the holding end of the insulating rod is provided with a handle convenient to operate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210471271.XA CN114744442B (en) | 2022-04-28 | 2022-04-28 | 0.4kV low-voltage uninterrupted operation cable quick access device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210471271.XA CN114744442B (en) | 2022-04-28 | 2022-04-28 | 0.4kV low-voltage uninterrupted operation cable quick access device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114744442A true CN114744442A (en) | 2022-07-12 |
| CN114744442B CN114744442B (en) | 2024-03-29 |
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|---|---|---|---|
| CN202210471271.XA Active CN114744442B (en) | 2022-04-28 | 2022-04-28 | 0.4kV low-voltage uninterrupted operation cable quick access device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115939806A (en) * | 2023-03-15 | 2023-04-07 | 广东电网有限责任公司肇庆供电局 | Can overlap connecting clamp with electricity |
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| CN107872011A (en) * | 2017-12-21 | 2018-04-03 | 徐州海伦哲专用车辆股份有限公司 | A kind of low pressure is confluxed master clamp |
| CN208508019U (en) * | 2018-06-06 | 2019-02-15 | 国网天津市电力公司 | Low pressure quickly accesses insulation lead wire folder |
| CN212304661U (en) * | 2020-04-28 | 2021-01-05 | 广州南方电安科技有限公司 | Temporary wiring clamp for bypass cable |
| CN112467405A (en) * | 2020-11-23 | 2021-03-09 | 国网安徽省电力有限公司检修分公司 | High-voltage grounding wire device capable of preventing unhooking |
| CN213520358U (en) * | 2020-12-08 | 2021-06-22 | 国网浙江省电力有限公司舟山供电公司 | Wire end clamp for busbar type grounding wire |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107872011A (en) * | 2017-12-21 | 2018-04-03 | 徐州海伦哲专用车辆股份有限公司 | A kind of low pressure is confluxed master clamp |
| CN208508019U (en) * | 2018-06-06 | 2019-02-15 | 国网天津市电力公司 | Low pressure quickly accesses insulation lead wire folder |
| CN212304661U (en) * | 2020-04-28 | 2021-01-05 | 广州南方电安科技有限公司 | Temporary wiring clamp for bypass cable |
| CN112467405A (en) * | 2020-11-23 | 2021-03-09 | 国网安徽省电力有限公司检修分公司 | High-voltage grounding wire device capable of preventing unhooking |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115939806A (en) * | 2023-03-15 | 2023-04-07 | 广东电网有限责任公司肇庆供电局 | Can overlap connecting clamp with electricity |
Also Published As
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|---|---|
| CN114744442B (en) | 2024-03-29 |
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