CN114744442B - 0.4kV low-voltage uninterrupted operation cable quick access device - Google Patents
0.4kV low-voltage uninterrupted operation cable quick access device Download PDFInfo
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- CN114744442B CN114744442B CN202210471271.XA CN202210471271A CN114744442B CN 114744442 B CN114744442 B CN 114744442B CN 202210471271 A CN202210471271 A CN 202210471271A CN 114744442 B CN114744442 B CN 114744442B
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- clamping plate
- rod
- threaded rod
- binding post
- clamping
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- 238000000034 method Methods 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- 238000009434 installation Methods 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
- 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 5
- 230000008569 process Effects 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000005389 magnetism Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 8
- 238000010079 rubber tapping Methods 0.000 description 6
- 239000004020 conductor Substances 0.000 description 5
- 239000012212 insulator Substances 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000016507 interphase Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change 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
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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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- Cable Accessories (AREA)
Abstract
The invention provides a low-voltage uninterrupted operation cable quick access device, and belongs to the technical field of power operation and maintenance. The low-voltage uninterrupted 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 the binding post; the one end that the clamp splice was kept away from to the threaded rod is fixed to be provided with the prismatic pole, and the one end that the insulating rod is close to the threaded rod is provided with and prismatic pole assorted prismatic hole, and prismatic pole and prismatic hole clearance fit set up and the magnetism is inhaled fixedly. The invention can quickly connect the low-voltage bypass cable into the low-voltage equipment under the condition of no power failure, and can overhaul the low-voltage equipment under the condition of no power failure.
Description
Technical Field
The invention belongs to the technical field of 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 to independently lay a bypass cable when low-voltage equipment needs to be shut down due to the conditions of transformation or maintenance and the like, and temporarily power the low-voltage equipment by using the bypass cable through power supply equipment such as a mobile box transformer substation. One end of the bypass cable is connected with 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 bus bar of the low-voltage equipment is close in distance and small in safety distance, and danger is easy to occur when the bypass cable is connected to the bus bar of the low-voltage equipment under the condition of no power failure, so that the bypass cable is connected after the power failure of a plurality of pairs of low-voltage equipment at present for safety, and the bypass cable needs to be disconnected again when the bypass cable is dismantled. In order to reduce the impact of a power outage on low voltage users, a method for quickly accessing bypass cables to low voltage equipment without power outage is needed.
For example, patent document CN215418797U proposes a rotary compression busbar lock rod, which comprises a locking head and an insulating rod, wherein the locking head comprises a U-shaped head and a pressing block arranged in the U-shaped head, the U-shaped head is provided with a first support arm, a second support arm and a base, and the first support arm is provided with an extension part bent towards the direction of the second support 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, the insulating rod is provided with a rotating shaft which penetrates through the base and is connected with the pressing block and the extension part, 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 other parts of the locking head are insulated except the connecting part and the surface of the end of the second support arm opposite to the pressing block so as to form a conductive surface on the surface of the end 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.
As another patent document CN211743440U, a low-voltage bypass cable quick-connection device is proposed, which includes a busbar connecting rod and a screwing rod; the side part of one end of the busbar connecting rod is provided with a clamp, the other end of the busbar connecting rod is provided with a connector, and the end part of the connector is provided with a threaded hole B; the jaw of the clamp is back to the busbar connecting rod, a clamping block is arranged on the side wall, close to the power connector, in the clamp, the clamping block is connected with a threaded hole A formed in the side wall, close to the power connector, of the clamp through threads, a polygonal column notch is formed in the end portion, connected with the clamp, of the clamping block, a polygonal column A matched with the polygonal column notch is formed in one end of the screwing rod, and an operation cross rod is arranged at the other end of the screwing rod; the jaw surface of the busbar connecting rod, the surface of the clamping block, the surface of the polygonal prism notch and the end face of the connector are exposed, and the rest surfaces of the busbar connecting rod are all coated with an insulating layer A; the surface of the polygon prism A of the screwing rod is exposed, and the rest surfaces of the screwing rod are all coated with an insulating layer C. The device utilizes female row connecting rod and extension bar to realize bypass power supply, and female row connecting rod and extension bar are inside to be the conductor, and heavy, also cause female bending or drop 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 invention adopts the following technical scheme:
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 in a cylindrical shape and 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;
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 the binding post;
the one end that the threaded rod kept away from the clamp splice is fixed to be provided with the prismatic pole, the insulating rod is close to the one end of threaded rod be provided with prismatic pole assorted prismatic hole, prismatic pole and prismatic hole clearance fit set up and the magnetism is inhaled fixedly.
Further, the device also comprises a clamping plate sheath, a clamping block sheath, a binding post sheath and a threaded rod sheath;
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 is wrapped on the outer side of the clamping block; the binding post shield is made of an insulating material and is covered on the binding post and the binding post; the threaded rod shield is made of an insulating material, is fixedly connected with the insulating rod and is covered on 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; holes for the boss to extend out are hollowed out in the positions, corresponding to the boss, of the clamping plate sheath; the boss is made of the same material as the clamping plate;
the side of terminal guard shield with splint contact is provided with the outer edge, splint sheath still parcel the outer edge.
Further, the insulating rod is fixedly provided with a wire clamp for temporarily fixing the diversion cable close to the holding end.
Further, the free ends of the prismatic rods are thinner; the end face of the free end of the prismatic rod is round, the end face of one end connected with the threaded rod is of an equilateral triangle, and the cross section gradually changes into a round shape in the process of extending towards the free end.
Further, the clamping plate and the wiring terminal are made of copper.
Further, the holding end of the insulating rod is provided with a handle convenient to operate.
In the prior art, when the bypass cable is connected to the busbar under the condition of no power failure, the insulating operating rod is used for operating the busbar clamped by the clamping part. Since the operation is performed without power outage, the operator must maintain a safe distance from the busbar, and the length of the insulating rod should also meet the requirement of the safe distance, and the length of the insulating rod is long.
In the prior art, in order to improve strength, the insulating rod and the clamping part are all not detachably connected, under the condition, after the clamping of the busbar is completed, if the insulating rod is loosened, the weight of the insulating rod acts on the busbar, and under the action of a lever principle, the busbar is very easy to bend or fall off. When the busbar is located in the equipment box on the ground, other objects can be used to support the gripping end of the insulating rod, but this method is not used for higher busbars. The insulating rod and the clamp unit of the insulating rod clamp are detachably connected, and the insulating rod can be detached after clamping of the busbar is completed, so that the insulating rod can be installed again when bypass connection is needed to be detached. Simultaneously, the insulator spindle is mainly used to rotate the threaded rod and realizes the centre gripping, does not need too high joint strength between insulator spindle and the anchor clamps unit, only need guarantee that insulator spindle and threaded rod can synchronous rotation can. Therefore, the prismatic rod and the prismatic hole are used for achieving synchronous rotation performance, and the prismatic rod and the prismatic hole are connected through magnetic attraction, so that the prismatic rod can be prevented from being separated from the prismatic hole under normal conditions.
In addition, the cable for connecting the busbar is also connected to the front end of the insulating rod, and the weight of the cable acts on the front end of the insulating rod, so that the holding or operation is very inconvenient, especially in the case of long insulating rods. The cable is fixed at the holding end of the insulating rod through the wire clamp, so that the weight of the front end is reduced, and the operation is labor-saving.
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 rapidly connect the low-voltage bypass cable into the low-voltage equipment under the condition of no power failure, can overhaul the low-voltage equipment under the condition of no power failure, and realizes continuous and reliable power supply for low-voltage users during overhaul of the distribution network. The invention can effectively solve the problem that the existing distribution network cannot be electrified and connected to power off before temporary power supply is needed, and has wide practical significance and popularization value.
According to the invention, the detachable magnetic connection structure is adopted between the insulating rod and the clamp unit, and after the clamp unit clamps the busbar, the insulating rod can be pulled outwards to be separated from the clamp unit, so that the busbar is prevented from being bent or falling off due to the fact that the weight of the insulating rod acts on the busbar. In this case, the insulating rod can be made longer, and a safe distance can be ensured during live working.
The clamp unit is insulated and protected by the clamping plate sheath, the binding post sheath and other parts, so that the outer side of the clamp unit is free of exposed conductors, and interphase short circuit or grounding caused by the fact that the conductors touch the busbar or the box body of other phases can be avoided. The boss is arranged on the inner side of the clamping plate and is used for contacting with the busbar, and meanwhile, the height of the boss is consistent with the thickness of the clamping plate sheath, so that the clamping plate sheath can provide friction force for the clamping plate, the clamp unit is prevented from falling off from the busbar when the threaded rod is rotated, and the conduction between the boss and the busbar is not influenced.
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, so that the weight of the diversion cable can act on the holding end of the insulating rod, and the influence on operation caused by too heavy head can be avoided.
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 tapping box of low-voltage equipment to be connected;
fig. 2: a schematic structural diagram of embodiment 1 of the present invention;
fig. 3: the embodiment 1 of the invention is a structural schematic diagram of a clamp unit;
fig. 4: the embodiment 1 of the invention is a connection schematic diagram of a clamp unit and an insulating rod;
fig. 5: a cross-sectional view of example 1 of the present invention;
fig. 6: one of the structural schematic diagrams of the clamp unit of embodiment 2 of the present invention;
fig. 7: a second structural schematic diagram of the clamp unit according to embodiment 2 of the present invention;
fig. 8: a cross-sectional view of inventive example 2;
fig. 9: an assembly schematic of embodiment 2 of the present invention;
fig. 10: a schematic structural diagram of embodiment 3 of the present invention;
fig. 11: a schematic structural diagram of embodiment 4 of the present invention;
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-binding post, 141-binding post shield, 2-insulating rod, 21-insulating handle, 22-prismatic hole, 23-magnet, 24-threaded rod shield, 25-wire clamp, 3-diversion cable, 31-binding post, 4-busbar.
Detailed Description
For a better understanding of the present invention, the content of the present invention will be further clarified below with reference to the examples and the accompanying drawings, but the scope of the present invention is not limited to the following examples only. 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 invention may be practiced without one or more of these details.
As shown in fig. 1, a tapping box of low-voltage equipment is provided with a busbar 4 corresponding to the number of phases of low-voltage cables in the box, and the busbar 4 is arranged on the rear wall of the box body. By means of the method and the device, the low-voltage bypass cable can be communicated with the busbar 4, the low-voltage bypass cable can be connected into low-voltage equipment without power outage, the low-voltage distribution network equipment can be overhauled without power outage, and continuous and reliable power supply to a low-voltage user during distribution network overhauling is achieved.
Example 1:
referring to fig. 2-5, the present embodiment is used to provide a fast access device for a low-voltage uninterrupted operation cable. As shown in fig. 2, the low-voltage uninterrupted operation cable quick access device comprises a clamp unit 1, an insulating 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 vertically and fixedly connected between the two side plates. The clamping block 12 is further arranged in the clamping plate 11, the clamping block 12 is cylindrical, and the central axis is perpendicular to the edge side plate of the clamping plate 11. The clamp block 12 and the clamping plate 11 can be clamped on two sides of the busbar 4, for adjusting the distance between the clamp block 12 and the clamping plate 11, the clamp unit 1 is further provided with a threaded rod 13, the threaded rod 13 is coaxial with the clamp block 12, the threaded rod 13 is rotationally connected with the clamp block 12 after penetrating through one edge side plate of the clamping plate 11, and the threaded rod 13 is in threaded connection with the clamping plate 11.
The insulating rod 2 is used for controlling the clamp unit 1 to clamp, and is used for providing necessary safety distance for a worker 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 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 the insulating handle is provided with anti-skid patterns, so that the insulating rod has good anti-skid performance. When the clamping plate 11 is buckled on the busbar 4, the insulating rod 2 is rotated, so that the threaded rod 12 can be rotated clockwise or anticlockwise, the distance between the clamping block 12 and the clamping plate 11 is adjusted, and the clamp unit 1 can be clamped on the busbar 4 or the clamp unit 1 can be detached from the busbar 4.
The diversion cable 3 is used for communicating the busbar 4 with the bypass cable, and 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 wiring terminal 31, the mounting end of the wiring terminal 31 is plate-shaped and has a mounting hole, the middle side plate of the clamping plate 11 is provided with a binding post 14, and the binding post 14 is a screw, so that the wiring terminal 31 can be fixedly mounted on the binding post 14 by using a nut to realize 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 realized. To ensure the communication performance with the bypass cable and to provide a sufficient flow capacity, the clamping plate 11 and the connection terminal 31 of the present embodiment are both copper.
In the working process of the embodiment, the clamping plate 11 is buckled on the busbar 4 by holding the insulating rod 2, and then the clamping block 12 is rotated clockwise to be pressed on the busbar 4, so that the clamping plate 11 is firmly clamped on the busbar 4, and the communication between the diversion cable 3 and the busbar 4 is realized. Because the insulating rod 2 is longer in length and heavier in weight to ensure a safe distance, if the insulating rod 2 is held by loosening at this time, the weight of the insulating rod 2 acts on the busbar 4 through the lever principle, and the busbar 4 is copper, so that the material is softer, and the busbar 4 is easy to bend or fall off from the installation position.
To solve the above-described problem, the insulation rod 2 and the threaded rod 13 of the present embodiment are detachably connected. As shown in fig. 4, the end of the threaded rod 13 far away from the clamping block 12 is further coaxially and fixedly provided with a prismatic rod 131, correspondingly, the end of the insulating rod 2 near the clamping block 12 is provided with a prismatic hole 22, 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 the 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 the insulating rod 2 is detached at the moment. When it is desired to rotate the threaded rod 13, the insulator spindle 2 is operated to insert the prismatic rod 131 into the prismatic hole 22, and the installation of the insulator spindle 2 is completed.
In order to avoid that the clamping unit 1 slips off the insulating rod 2 if necessary, a magnetic connection is used between the prismatic rod 131 and the insulating rod 2 in this embodiment. 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, and the prismatic rod 131 is prevented from slipping out of the prismatic hole 22 in a natural state. Of course, other magnetic attraction structures can be adopted between the prismatic rod 131 and the insulating rod 2, for example, a magnet is fixedly arranged at the end of the prismatic rod 131, and a steel block or an iron block or another magnet with opposite polarity is fixedly arranged at the bottom of the prismatic hole 22.
In order to achieve a quick installation 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 tapers to the bottom. Meanwhile, in the continuous tapering process of the prismatic rod 131, the cross section is gradually changed from an equilateral triangle to a circle, namely, one end of the prismatic rod 131 connected with the threaded rod 13 is prismatic, the end face of the free end is circular, and the middle part is in a gradual change shape from prismatic to cylindrical.
The rotational 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, which is close to the clamping block 12, is not provided with external threads, the end extends into the clamping block 12 and then is in clearance fit with the clamping block 12, a groove is circumferentially formed in the end, a bolt is circumferentially arranged on the clamping block 12, the end of the bolt extends into the groove, and the threaded rod 13 can be prevented from being separated from the clamping block 12.
Example 2:
referring to fig. 6-7, the low-voltage uninterrupted operation cable quick access device provided in this embodiment is improved as compared with embodiment 1 as follows: the outside of the clamp unit 1 is also insulated.
Because the distance between the busbar 4 in the distribution box or the tapping box of the low-voltage equipment is smaller, the operation is not easy when the insulating rod 2 is used for operating the clamp unit 1 to clamp the busbar 4, and if the operation is careless, the busbar 4 or the box of other phases can be touched, so that interphase short circuit or grounding is caused.
To solve the above-described problem, the present embodiment performs insulation protection on the outside of the clip unit 1, and does not conduct even when touching other busbar 4. As shown in fig. 6 to 8, the clamping plate 11 is covered with a clamping plate sheath 111, the clamping block 12 is covered with a clamping block sheath 121, the outer sides of the binding post 14 and the binding post 31 are covered with a binding post shield 141, and one side of the insulating rod 2, which is close to the threaded rod 13, is covered with a threaded rod shield 24.
The splint sheath 111 is made of soft silica gel, has good elasticity and insulating property, and as shown in fig. 9, the splint sheath 111 is of an integrated structure and is in a flattened shape before being installed. The splint sheath 111 is hollowed with a long strip hole, and when the splint sheath 111 is installed, the splint 11 can enter the inside of the splint sheath 111 from the long strip hole to complete the sleeving. After the cleat housing 111 is installed, the threaded rod 13, the post 14 and the post shroud 141 are positioned within the elongated aperture.
The clamp block sheath 121 is also made of soft silica gel, is hollow cylindrical before being installed, and can be sleeved on the clamp block 12. The terminal shield 141 is made of a rigid insulating material and is shaped and sized to match the terminal 14 and the terminal 31 and can be placed over the terminal 14 and the terminal 31. Meanwhile, the side of the post shield 141 in contact with the clamping plate 11 is provided with an outer edge which can be extended between the clamping plate 11 and the clamping plate sheath 111 as shown in fig. 8, and thus, the clamping plate sheath 111 can also achieve fixation of the abutment post shield 141. The threaded rod shield 24 is made of hard insulating materials, is hollow and non-covered and cylindrical, one end of the threaded rod shield is 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 binding post sheath 141 and the threaded rod sheath 24 are arranged in the embodiment, the outer side of the clamp unit 1 is free of exposed conductors, and the conductors can be prevented from touching the busbar 4 of other phases.
After the clamping plate sheath 111 is installed, the inner side of the clamping plate 11 is also protected, and of course, in order to realize conduction with the busbar 4, in this embodiment, a boss 112 is disposed on the inner side of a side plate opposite to the clamping block 12 of the clamping plate 11, and a hole for extending out the boss 112 is hollowed out at a corresponding position of the clamping plate sheath 111. The boss 112 and the clamping plate 11 are made of the same material, and after the clamping plate 11 is clamped on the busbar 4, the boss 112 abuts against the busbar 4 to realize conduction.
The height of the boss 112 is identical to the thickness of the splint casing 111, and the top surface of the boss 112 is flush with the splint casing 111. Because the silica gel material of the clamping plate sheath 111 has good anti-slip performance, compared with the embodiment 1, when the clamping block 11 is buckled on the busbar 4, the clamping plate sheath 111 at the inner side of the clamping plate 11 can be contacted with the busbar 4, and only small pressure is needed between the clamping plate sheath 111 and the busbar 4 to have stronger friction force, so that the clamping plate 11 can not easily slip off from the busbar 4 even when the threaded rod 13 is rotated, and the clamping installation of the clamp unit 1 is conveniently completed. At the same time, the flush clamping sleeve 111 does not influence the contact conduction between the boss 112 and the busbar 4.
Example 3:
referring to fig. 10, the low-voltage uninterrupted operation cable quick access device provided in this embodiment is improved as compared with embodiment 2 as follows: the splint casing 111 is further provided with a baffle 113.
The baffle 113 is disposed along an edge of the clamping plate sheath 111 at a side opening portion away from the insulating rod 2, and protrudes toward the insulating rod 2.
In this embodiment, when the insulating rod 2 is used to operate the clamp unit 1 to clamp the busbar 4, the raised baffle 113 can hook the edge of the busbar 4, so that the clamp unit 1 cannot slip from the busbar 4 when the insulating rod is rotated.
Example 4:
referring to fig. 11, the low-voltage uninterrupted operation cable quick access device provided in this embodiment is improved as compared with embodiment 3 as follows: the insulating rod 2 is also provided with a wire clamp 25 for temporarily fixing the diversion cable 3.
The diversion cables 3 are made of copper, have a large wire diameter and are heavy in weight in order to ensure the through-flow capability. As in embodiments 1-3, the guide cable 3 is only fixedly connected with the binding post 14, the weight of the guide cable 3 directly acts on the fixture unit 1, especially when the busbar 4 to be connected is high (such as a tapping box arranged on a wall), the guide cable 3 is longer, the applied weight is also heavier, and the length of the insulating rod 2 is longer, so that a worker is very hard to hold the insulating rod 2 for installation.
In this embodiment, the wire clamp 25 is fixedly arranged on the insulating rod 2 near the insulating handle 21, and the wire clamp 25 can temporarily clamp and fix the diversion cable 3, so that the weight of the diversion cable 3 is applied to the holding end of the insulating rod 2, the weight of the front end can be reduced, and the holding and operation of the staff are more labor-saving.
On the other hand, when the guide cable 3 is fixed without using the wire clamp 25, the guide cable 3 sags from the clamp unit 1, and when the clamp unit 1 is mounted in the distribution box or the tapping box by holding the insulating rod 2, the sagged guide cable 3 may rub or collide with other components at the lower part of the box or the box, and interfere with the mounting of the clamp unit 1. In this embodiment, after the guide cable 3 is fixed by the wire clip 25, the guide cable 3 extends along the insulating rod 2, so that the guide cable 3 does not interfere with the installation of the fixture unit 1.
In this embodiment, after the clamping of the clamp unit 1 is completed, the insulating rod 2 may be removed, and the guide cable 3 may be detached from the wire clamp 25.
Finally, it is noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present invention, and that other modifications and equivalents thereof by those skilled in the art should be included in the scope of the claims of the present invention without departing from the spirit and scope of the technical solution of the present invention.
Claims (5)
1. The utility model provides a low pressure does not have power failure operation cable quick access device which characterized in that: 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 in a cylindrical shape and 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;
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 the binding post;
the insulation rod is arranged at one end, close to the threaded rod, of the threaded rod, a prismatic hole matched with the prismatic rod is formed in the end, far away from the clamping block, of the threaded rod, and the prismatic rod and the prismatic hole are in clearance fit and are fixed in a magnetic attraction mode;
the clamping plate protective sleeve, the clamping block protective sleeve, the binding post protective sleeve and the threaded rod protective sleeve are further included;
the splint sheath is made of soft silica gel and is wrapped on the inner side and the outer side of the splint; the clamping block sheath is made of soft silica gel and is wrapped on the outer side of the clamping block; the binding post shield is made of an insulating material and is covered on the binding post and the binding post; the threaded rod shield is made of an insulating material, is fixedly connected with the insulating rod and is covered on 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; holes for the boss to extend out are hollowed out in the positions, corresponding to the boss, of the clamping plate sheath; the boss is made of the same material as the clamping plate;
the side edge of the binding post shield, which is in contact with the clamping plate, is provided with an outer edge, and the clamping plate shield also wraps the outer edge;
the clamping plate sheath is arranged in a split mode with the clamping plate, a strip hole is further formed in the clamping plate sheath, and the strip hole is an installation opening when the clamping plate sheath is sleeved on the clamping plate; after the clamping plate sheath is installed, the threaded rod, the binding post and the binding post shield are all positioned in the strip hole;
the clamping plate sheath is also provided with a baffle plate, the baffle plate is positioned at the opening of the clamping plate, is arranged along the edge of one side of the clamping plate sheath, which is far away from the insulating rod, and protrudes towards the direction of the insulating rod.
2. The low voltage uninterruptible operation cable quick access device of claim 1, wherein: the insulating rod is close to the holding end and is fixedly provided with a wire clamp for temporarily fixing the diversion cable.
3. The low voltage uninterruptible operation cable quick access device of claim 1, wherein: the free end of the prismatic rod is thinner; the end face of the free end of the prismatic rod is round, the end face of one end connected with the threaded rod is of an equilateral triangle, and the cross section gradually changes into a round shape in the process of extending towards the free end.
4. The low voltage uninterruptible operation cable quick access device of claim 1, wherein: the clamping plates and the wiring terminals are made of copper.
5. The low voltage uninterruptible operation cable quick access device of claim 1, wherein: 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 |
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| Publication Number | Publication Date |
|---|---|
| CN114744442A CN114744442A (en) | 2022-07-12 |
| CN114744442B true 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115939806B (en) * | 2023-03-15 | 2023-06-02 | 广东电网有限责任公司肇庆供电局 | Connecting clamp capable of being electrified |
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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 |
-
2022
- 2022-04-28 CN CN202210471271.XA patent/CN114744442B/en active Active
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 |
| 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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|---|---|
| CN114744442A (en) | 2022-07-12 |
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