CN118412817A - Lightning arrester connecting device and cable connecting method for cable installation - Google Patents
Lightning arrester connecting device and cable connecting method for cable installation Download PDFInfo
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- CN118412817A CN118412817A CN202410825962.4A CN202410825962A CN118412817A CN 118412817 A CN118412817 A CN 118412817A CN 202410825962 A CN202410825962 A CN 202410825962A CN 118412817 A CN118412817 A CN 118412817A
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- 238000009434 installation Methods 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000004020 conductor Substances 0.000 claims description 39
- 230000000670 limiting effect Effects 0.000 claims description 20
- 238000002788 crimping Methods 0.000 claims description 13
- 238000003825 pressing Methods 0.000 claims description 11
- 238000011900 installation process Methods 0.000 claims description 4
- 230000036544 posture Effects 0.000 description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
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- 229910052802 copper Inorganic materials 0.000 description 3
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- 230000000694 effects Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G13/00—Installations of lightning conductors; Fastening thereof to supporting structure
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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
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
- H01R43/048—Crimping apparatus or processes
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/14—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for joining or terminating cables
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- Cable Accessories (AREA)
Abstract
The invention discloses a lightning arrester connecting device and a cable connecting method for cable installation, wherein the lightning arrester connecting device comprises a base, a lightning arrester positioning seat and a separable connector positioning seat, wherein the lightning arrester positioning seat and the separable connector positioning seat are arranged on the base; the separable connector positioning seat comprises a horizontal groove and a vertical groove, and the lightning arrester positioning seat comprises a lightning arrester positioning groove matched with the outer wall of the lightning arrester, and the lightning arrester positioning groove and the vertical groove are coaxially arranged; the base is provided with a pushing mechanism, and the pushing mechanism is provided with a clamping mechanism; the lightning arrester positioning seat is provided with a positioning clamp used for positioning the wiring terminal, the positioning clamp is rotationally connected to the lightning arrester positioning seat through a rotating shaft, and the rotating shaft is provided with a reset spring. The lightning arrester connecting device can improve the installation accuracy of the lightning arrester, improve the installation stability and efficiency, avoid the fault of the separable connector in operation due to the installation problem of the lightning arrester, and reduce the potential safety hazard in the operation of the distribution equipment.
Description
Technical Field
The invention relates to the technical field of cable connection, in particular to a lightning arrester connecting device for cable installation and a cable connecting method.
Background
Cable connectors are widely used in power distribution projects for connecting cables to a power distribution cabinet or ring main unit. When the cables are connected, the conductor cables in the cables are required to be separated, the end parts of the conductor cables are processed, then stress cones, connecting terminals and cable connectors are installed on the conductor cables, and finally the cable connectors are installed on the power distribution cabinet or the ring main unit.
Part switch board or looped netowrk cabinet need possess the measure of lightning protection at the operation in-process, consequently, at the in-process that cable and switch board or looped netowrk cabinet are connected, still carry out the installation of arrester, and the installation of arrester belongs to one of them link in the cable junction. It is first necessary to install the lightning arrester in the separable connector and then to install the separable connector on the cable connector. Wherein, the head of arrester is equipped with binding post, and the afterbody of arrester is provided with the spliced pole. The separable connector is generally T-shaped and is formed from a horizontal section and a vertical section. When the lightning arrester is installed, one end of the flat connecting terminal in the lightning arrester needs to be installed in the vertical section of the separable connector and penetrates through the vertical section, so that the connecting terminal of the lightning arrester is located in the horizontal section of the separable connector, and the connecting hole of the connecting terminal of the lightning arrester is required to be coaxial with the axis of the horizontal section.
In the existing detachable connector and arrester installation process, due to the lack of special installation tools, manual installation is mostly adopted, one end of a wiring terminal of the arrester is manually inserted into a vertical section of the detachable connector, the connecting hole of the wiring terminal of the arrester and the axis of a horizontal section are difficult to ensure to be accurate and coaxial, a certain error exists in the installation accuracy and the installation position of the arrester, damage to a core body of the arrester is likely to be caused, the detachable connector fails in operation, and huge potential safety hazards are brought to the operation of power distribution equipment.
Disclosure of Invention
The invention aims to overcome the problems in the prior art, and provides a lightning arrester connecting device for cable installation, which can improve the installation precision of a lightning arrester, improve the installation stability and efficiency, avoid the fault of a separable connector in operation due to the installation problem of the lightning arrester, and reduce the potential safety hazard in the operation of power distribution equipment.
Another object of the present invention is to provide a cable connection method.
The aim of the invention is achieved by the following technical scheme:
A lightning arrester connecting device for cable installation comprises a base, a lightning arrester positioning seat and a separable connector positioning seat, wherein the lightning arrester positioning seat is arranged on the base and used for positioning a lightning arrester; the separable connector positioning seat comprises a horizontal groove and a vertical groove which are matched with the horizontal section and the vertical section of the separable connector respectively, the lightning arrester positioning seat comprises a lightning arrester positioning groove matched with the outer wall of the lightning arrester, and the lightning arrester positioning groove and the vertical groove are coaxially arranged;
The base is provided with a pushing mechanism, the pushing mechanism is provided with a clamping mechanism for clamping a connecting column on the lightning arrester, and the pushing mechanism is used for pushing the lightning arrester to move along a lightning arrester positioning groove; the lightning arrester positioning seat is provided with a positioning clamp for positioning a wiring terminal on the lightning arrester, the positioning clamp is rotationally connected to the lightning arrester positioning seat through a rotating shaft, the rotating shaft is provided with a reset spring, one end of the reset spring acts on the positioning clamp, and the other end of the reset spring acts on the rotating shaft; when the lightning arrester is placed in the lightning arrester positioning groove and the wiring terminal is positioned in the positioning clamp, the axis of the connecting hole in the wiring terminal is parallel to the horizontal groove.
The working principle of the lightning arrester connecting device for cable installation is as follows:
The lightning arrester connecting device is used for pre-installing the lightning arrester and the separable connector together before connecting the lightning arrester to the power distribution cabinet or the ring main unit; when the lightning arrester is installed, the lightning arrester is placed on a lightning arrester positioning groove of the lightning arrester positioning seat, and a wiring terminal on the lightning arrester is placed in the positioning clamp, so that the lightning arrester has a determined position and posture on the lightning arrester positioning seat, and at the moment, the axis of a connecting hole in the wiring terminal is parallel to the horizontal groove; simultaneously, the separable connector is placed on a separable connector positioning seat; then, the clamping mechanism clamps the connecting column of the lightning arrester, the pushing mechanism pushes the clamping mechanism and the lightning arrester to move towards the direction of the positioning seat of the separable connector, the pushing mechanism accurately pushes the lightning arrester into the separable connector, the lightning arrester can touch the positioning clamp and overcome the elasticity of the reset spring in the pushing process, the positioning clamp is pushed to rotate, and the positioning clamp is separated from the wiring terminal, at the moment, the lightning arrester is clamped by the clamping mechanism, so that the original posture is maintained even after the wiring terminal is separated from the positioning clamp; along with the movement of the lightning arrester, the lightning arrester enters the vertical section of the separable connector and reaches the end position, the axis of the connecting hole in the wiring terminal in the lightning arrester is coaxial with the horizontal section of the separable connector, and the precise installation of the lightning arrester and the separable connector is realized; after the lightning arrester and the separable connector which are installed together are taken down, the positioning clamp resets under the elasticity of the reset spring, the clamping mechanism resets, the pushing mechanism resets, and one working process is completed.
According to a preferred scheme of the invention, the pushing mechanism is a pushing cylinder, a pushing sleeve is arranged on a piston rod of the pushing cylinder, and the clamping mechanism is arranged in the pushing sleeve. In the structure, the pushing cylinder is arranged, and the lightning arrester can be pushed into the separable connector through the extension movement of the piston rod of the pushing cylinder, so that the structure is simple; through setting up the top and pushing away the cover, can pass through the thrust that pushes away the piston rod and push away the cover and transmit to the arrester in, effectively increase the atress area of during operation, improve the stability of arrester motion for the arrester atress is more even, avoids causing the damage to the arrester.
Preferably, the clamping mechanism is a clamping cylinder. The lightning arrester is clamped by arranging the clamping cylinder, so that the lightning arrester can be clamped and positioned, the lightning arrester can be ensured to accurately enter the separable connector, and the posture of the lightning arrester is kept unchanged in the moving process; on the other hand, the clamping cylinder is driven as an air source, and the pushing cylinder is also driven as an air source, so that a plurality of types of power sources are not required to be additionally arranged, and the structure of the lightning arrester connecting device is simpler and more compact.
Preferably, a positioning rod is arranged on the cylinder body of the pushing cylinder, a connecting plate is arranged on the piston rod of the pushing cylinder, one end of the positioning rod is fixedly connected with the connecting plate, and the other end of the positioning rod is in sliding connection with the cylinder body of the pushing cylinder. Through setting up locating lever and connecting plate, the locating lever can play location guide effect, prevents that the piston rod from taking place to rotate in the course of the work, influences the installation accuracy of arrester.
Preferably, the lightning arrester connecting device further comprises a control box, and the control box is connected with the clamping cylinder and the pushing cylinder through air pipes; and the control box is provided with a working button and a reset button. After the lightning arrester and the separable connector are installed, a working button is pressed, a clamping cylinder works, a connecting column of the lightning arrester is clamped, meanwhile, a pushing cylinder works, a piston rod of the pushing cylinder extends to push the lightning arrester to move, the lightning arrester enters a vertical section of the separable connector, after the work is completed, a reset button is pressed, the clamping cylinder resets, and meanwhile, the piston rod of the pushing cylinder resets, so that a working flow is completed.
Preferably, the lightning arrester positioning seat is provided with a mounting part at one end close to the separable connector positioning seat, the rotating shaft is arranged on the mounting part, the positioning clamp comprises a first clamping plate, a second clamping plate and a connecting block connected between the first clamping plate and the second clamping plate, and a clamping groove for clamping and positioning the wiring terminal is formed by the upper end surface of the connecting block and a space surrounded by the side surface of the first clamping plate and the side surface of the second clamping plate; the lower end face of the connecting block is a limiting face. In the structure, the elastic force of the reset spring drives the locating clip to rotate towards the direction of the lightning arrester locating seat, and the limiting surface is contacted with the upper end surface of the mounting part, so that the limiting effect of the locating clip is achieved, and the locating clip is kept in a stable state; when the pushing cylinder pushes the lightning arrester to move, the lightning arrester can push the positioning clamp to swing towards the direction of the positioning seat of the separable connector, the positioning clamp can overcome the elastic force of the reset spring, and the limiting surface can be separated from the upper end surface of the mounting part in the swinging process of the positioning clamp.
Further, the separable connector positioning seat further comprises a limiting part arranged on one side of the horizontal groove. In the structure, the limiting part is arranged on one side of the horizontal groove, so that the separable connector is prevented from moving in the process of installing the lightning arrester, and the separable connector is limited.
A method of cable connection comprising the steps of:
(1) Pretreating a cable;
(2) Installing a stress cone on the pretreated cable;
(3) Fixing the stress cone and the cable on an auxiliary mounting device, then mounting a connecting terminal on a conductor core of the cable, and positioning the connecting terminal through the auxiliary mounting device so that the connecting terminals on all the conductor cores face the same direction and are positioned on the same plane; crimping the connection terminal onto the conductor core of the cable using a crimping tool; then installing the cable connector on the stress cone, wherein in the installation process of the cable connector, the auxiliary installation device positions the cable connector so that the axis of the horizontal section of the cable connector coincides with the axis of the connecting hole of the connecting terminal; after the cable, the connecting terminal, the stress cone and the cable connector form a whole, and the whole formed by the cable, the connecting terminal, the stress cone and the cable connector is detached from the auxiliary mounting device;
(4) Installing a whole formed by a cable, a connecting terminal, a stress cone and a cable connector on power distribution equipment;
(5) Installing a lightning arrester in a separable connector through the lightning arrester connecting device; after the lightning arrester is installed, the lightning arrester and the separable connector form a whole;
(6) The whole of the lightning arrester and the separable connector is mounted on the cable connector.
Preferably, the auxiliary mounting device comprises a main positioning die, a positioning pressing strip and a stress cone positioning die arranged at the lower end of the main positioning die; one end of the stress cone positioning die is hinged with the main positioning die, and the other end of the stress cone positioning die is connected with the main positioning die through a detachable fixing structure; a stress cone positioning groove for positioning the stress cone is arranged between the main positioning die and the stress cone positioning die; the main positioning die is provided with a cable connector positioning groove for positioning the cable connector, the main positioning die is provided with a plurality of positioning blocks, and a space between two adjacent positioning blocks forms the cable connector positioning groove; the cable connector positioning groove is provided with a movable block in a sliding manner, and the positioning pressing strip sequentially penetrates through all the positioning blocks; the space between the positioning pressing strip and the movable block forms a connecting terminal positioning groove for positioning the connecting terminal.
The working principle of the auxiliary installation device is as follows:
Opening a stress cone positioning die, separating the main positioning die from the stress cone positioning die, placing the stress cone and the cable on the main positioning die, closing the stress cone positioning die, clamping the stress cone in a stress cone positioning groove, and fixing the stress cone positioning die on the main positioning die through a detachable fixing structure; then installing connecting terminals on conductor cores of the cables, vertically sliding the movable blocks on the positioning blocks, installing the movable blocks from top to bottom, and adjusting the postures of the connecting terminals on the conductor cores, so that the connecting terminals cling to the side surfaces of the movable blocks, the connecting terminals on all the conductor cores face the same direction and are on the same plane, installing positioning press strips, and enabling the positioning press strips to sequentially pass through all the positioning blocks, so that the connecting terminals are positioned in the positioning grooves of the connecting terminals to prevent movement during crimping; crimping the connection terminal onto the conductor core using a crimping tool; then the movable block and the positioning pressing strip are removed; and then installing the cable connector on the stress cone, positioning the horizontal section of the cable connector by the cable connector positioning groove in the installation process, positioning the cable connector by the stress cone when the cable connector is sleeved on the stress cone, enabling the axis of the horizontal section of the cable connector to coincide with the axis of the connecting hole of the connecting terminal, and finally detaching the whole formed by the cable, the connecting terminal, the stress cone and the cable connector from the auxiliary installation device, namely opening the stress cone positioning mold through the detachable fixing structure, so that the whole can be detached.
Preferably, the lower extreme of locating piece is equipped with and is used for fixing the first magnet of movable block, and the side of one of them locating piece is equipped with and is used for fixing the second location magnet of location layering, through setting up first magnet and second location magnet for when fixing a position connecting terminal, movable block and location layering can be fixed, guarantee the stability of location.
Preferably, the lower extreme of locating piece is equipped with the spacing platform that is used for carrying out spacing to the movable block, be equipped with on the main positioning die and be used for dodging cable connector dodge the groove, dodge the bottom surface in groove with stress cone positioning die's top surface flushes, dodge the bottom surface in groove with stress cone positioning die's top surface forms the locating surface. Through the arrangement of the limiting table, the movable block is limited and fixed downwards, so that the movable block can be fixed on the positioning block; by arranging the avoidance groove, the cable connector can be avoided, and meanwhile, the cable connector can be guided; the locating surface can play a role in locating the installation height of the cable connectors, so that the installation heights of the cable connectors are consistent, meanwhile, the relative positions of the cable connectors and the connecting terminals are accurate, and the precision of cable wiring is improved.
Compared with the prior art, the invention has the following beneficial effects:
1. According to the lightning arrester connecting device, when the lightning arrester connecting device is installed, the horizontal groove and the vertical groove can be used for positioning the separable connector, the lightning arrester positioning groove can be used for positioning the lightning arrester, the lightning arrester positioning groove and the vertical groove are coaxially arranged, the lightning arrester can accurately enter the vertical section of the separable connector, the positioning clamp can enable the axis of the connecting hole in the wiring terminal to be parallel to the horizontal groove, the pushing mechanism can accurately push the lightning arrester into the separable connector, the axis of the connecting hole in the wiring terminal in the lightning arrester is coaxial with the horizontal section of the separable connector, the installation precision of the lightning arrester is improved, the installation stability and efficiency are improved, the separable connector is prevented from being failed due to the installation problem of the lightning arrester, and the potential safety hazard in the operation of power distribution equipment is reduced.
2. According to the lightning arrester connecting device, the lightning arrester can touch the positioning clamp in the pushing process, the elastic force of the reset spring is overcome, the positioning clamp is pushed to rotate, the positioning clamp is separated from the wiring terminal, and at the moment, the lightning arrester is clamped by the clamping mechanism, so that the original posture is maintained even after the wiring terminal is separated from the positioning clamp, and the installation accuracy of the lightning arrester is further improved.
3. According to the cable connection method, the auxiliary installation device is used for positioning the stress cone, the connection terminal and the cable connector, so that the installation precision of the connection terminal is improved, and the precision of cable connection is further improved by matching with the lightning arrester connection device, so that the quality of cable connection is improved.
4. According to the cable connection method, the auxiliary installation device simultaneously positions the stress cones, the connection terminals and the cable connectors on one cable, so that the stress cones are uniformly arranged in the same plane, and meanwhile, the connection terminals on all conductor cores face the same plane, and the connection accuracy of the cable on the power distribution equipment is further improved.
Drawings
Fig. 1 is a schematic perspective view showing one embodiment of a lightning arrester connection device for cable installation according to the present invention.
Fig. 2 is a schematic perspective view of a lightning arrester connecting device according to the present invention, omitting a control box, an air pipe, a lightning arrester and a separable connector.
Fig. 3 is a schematic perspective view of a lightning arrester according to the present invention.
Fig. 4 is a schematic diagram of the installation structure of the pushing mechanism, the pushing sleeve, the positioning plate, the connecting rod and the clamping mechanism in the invention.
Fig. 5 is a schematic diagram of the installation structure of the pushing mechanism, the positioning plate, the connecting rod and the clamping mechanism in the invention.
Fig. 6 is a schematic view of the installation structure of the lightning arrester positioning seat and the positioning clamp in the invention.
Fig. 7 is a schematic perspective view of a locating clip according to the present invention.
Fig. 8 is a schematic view showing an internal structure of the arrester and the separable connector of the present invention as a whole.
Fig. 9 is a schematic perspective view of an auxiliary mounting device according to the present invention.
Fig. 10 is a schematic perspective view of the auxiliary device according to the present invention at another view angle.
Fig. 11 is a schematic perspective view of a stress cone positioning mold of an auxiliary mounting device in the invention when opened.
Fig. 12 is a schematic perspective view of the auxiliary mounting device according to the present invention after mounting the stress cone and the connection terminal.
Fig. 13 is a schematic perspective view of the auxiliary mounting device in the present invention when positioning the stress cone and the connection terminal.
Fig. 14 is a schematic perspective view of the auxiliary mounting device of the present invention when positioning the cable connector.
Fig. 15 is a schematic view showing an internal structure of the cable, the connection terminal, the stress cone and the cable connector of the present invention as a whole.
Fig. 16 is a schematic view of the cable connecting apparatus in the present invention.
Fig. 17 is an exploded view of the cable connection apparatus of the present invention.
Detailed Description
In order that those skilled in the art will well understand the technical solutions of the present invention, the following describes the present invention further with reference to examples and drawings, but the embodiments of the present invention are not limited thereto.
Example 1
Referring to fig. 1-6, the present embodiment discloses a lightning arrester connecting device for cable installation, comprising a base 1, a lightning arrester positioning seat 3 arranged on the base 1 for positioning a lightning arrester 2, and a separable connector positioning seat 5 for positioning a separable connector 4.
Referring to fig. 3, the head of the lightning arrester 2 is provided with a connecting terminal 6, and the tail of the lightning arrester 2 is provided with a connecting column 7; the connection post 7 is used for grounding when the lightning arrester 2 is in operation.
Referring to fig. 1-6, the separable connector locating seat 5 comprises a horizontal groove 5-11 and a vertical groove 5-12 which are matched with the horizontal section and the vertical section of the separable connector 4 respectively, and the horizontal groove 5-11 and the vertical groove 5-12 form a separable connector locating groove; the lightning arrester positioning seat 3 comprises a lightning arrester positioning groove 3-1 matched with the outer wall of the lightning arrester 2, and the lightning arrester positioning groove 3-1 and the vertical groove 5-12 are coaxially arranged.
Referring to fig. 1-6, a pushing mechanism is arranged on the base 1, a clamping mechanism for clamping a connecting column 7 on the lightning arrester 2 is arranged on the pushing mechanism, the pushing mechanism is used for pushing the lightning arrester 2 to move along a lightning arrester positioning groove 3-1, a positioning clamp 8 for positioning a wiring terminal 6 on the lightning arrester is arranged on the lightning arrester positioning seat 3, the positioning clamp 8 is rotationally connected to the lightning arrester positioning seat 3 through a rotating shaft 9, a reset spring 10 is arranged on the rotating shaft 9, one end of the reset spring 10 acts on the positioning clamp 8, and the other end of the reset spring 10 acts on the rotating shaft 9; when the lightning arrester 2 is placed in the lightning arrester positioning slot 3-1 and the wiring terminal 6 is positioned in the positioning clamp 8, the axis of the connecting hole 23 in the wiring terminal 6 is parallel to the horizontal slot 5-11.
Referring to fig. 1 to 6, the working principle of the lightning arrester connection device for cable installation described above is:
The lightning arrester connecting device is used for pre-installing the lightning arrester 2 and the separable connector 4 together before connecting the lightning arrester 2 to the power distribution cabinet or the ring main unit; when the lightning arrester is installed, the lightning arrester 2 is placed on the lightning arrester positioning groove 3-1 of the lightning arrester positioning seat 3, and the wiring terminal 6 on the lightning arrester 2 is placed in the positioning clamp 8, so that the lightning arrester 2 has a certain position and posture on the lightning arrester positioning seat 3, and at the moment, the axis of the connecting hole 23 in the wiring terminal 6 is parallel to the horizontal groove 5-11; simultaneously, the separable connector 4 is placed on the separable connector positioning seat 5; then, the clamping mechanism clamps the connecting column 7 of the lightning arrester 2, the pushing mechanism pushes the clamping mechanism and the lightning arrester 2 to move towards the direction of the positioning seat 5 of the separable connector, the pushing mechanism accurately pushes the lightning arrester 2 into the separable connector 4, the lightning arrester 2 can touch the positioning clamp 8in the pushing process, the positioning clamp 8 is pushed to rotate against the elastic force of the reset spring 10, and the positioning clamp 8 is separated from the wiring terminal 6, at the moment, the lightning arrester 2 is clamped by the clamping mechanism, so that the original posture is maintained even after the wiring terminal 6 is separated from the positioning clamp 8; along with the movement of the lightning arrester 2, the lightning arrester 2 enters the vertical section of the separable connector 4 and reaches the end position, the axis of the connecting hole 23 in the connecting terminal 6 in the lightning arrester 2 is coaxial with the horizontal section of the separable connector 4, and the precise installation of the lightning arrester 2 and the separable connector 4 is realized; after the lightning arrester 2 and the separable connector 4 which are installed together are taken down, the positioning clamp 8 is reset under the elasticity of the reset spring 10, the clamping mechanism is reset, and the pushing mechanism is reset, so that one working flow is completed.
Referring to fig. 1-6, the pushing mechanism is a pushing cylinder 11, and the pushing cylinder 11 comprises a cylinder body 11-2 and a piston rod 11-1 arranged on the cylinder body 11-2; the piston rod 11-1 of the pushing cylinder 11 is provided with a pushing sleeve 12, and the clamping mechanism is arranged in the pushing sleeve 12. In the structure, the pushing cylinder 11 is arranged, and the lightning arrester 2 can be pushed into the separable connector 4 through the extension movement of the piston rod 11-1 of the pushing cylinder 11, so that the structure is simple; through setting up pushing away cover 12, can pass through pushing away pushing force of piston rod 11-1 and putting into 2 to the arrester, effectively increase the atress area of during operation, improve the stability of arrester 2 motion for arrester 2 atress is more even, avoids causing the damage to arrester 2.
Referring to fig. 1-6, the clamping mechanism is a clamping cylinder 13. Through setting up clamp cylinder 13 and pressing from both sides tightly, can play the effect of centre gripping location to arrester 2 on the one hand, guarantee that arrester 2 can accurately get into separable connector 4 in, on the other hand, clamp cylinder 13 is as the air supply drive, and push away cylinder 11 and also drive as the air supply, need not to set up the power supply of multiple form additionally, can make arrester connecting device's structure simpler like this, compactly.
Referring to fig. 5, the clamping cylinder 13 is a clamping cylinder 13 with a three-jaw structure, so that the clamping stability is ensured.
Referring to fig. 1-6, a positioning rod 14 is arranged on a cylinder body 11-2 of the pushing cylinder 11, a connecting plate 15 is arranged on a piston rod 11-1 of the pushing cylinder 11, one end of the positioning rod 14 is fixedly connected with the connecting plate 15, and the other end of the positioning rod 14 is slidably connected with the cylinder body 11-2 of the pushing cylinder 11. By arranging the positioning rod 14 and the connecting plate 15, the positioning rod 14 can play a role in positioning and guiding, and the piston rod 11-1 is prevented from rotating in the working process, so that the installation accuracy of the lightning arrester 2 is affected.
Referring to fig. 1 and 4, the lightning arrester connecting device further comprises a control box 16, wherein the control box 16 is connected with the clamping cylinder 13 and the pushing cylinder 11 through an air pipe 19; the control box 16 is provided with a working button 17 and a reset button 18. After the lightning arrester 2 and the separable connector 4 are installed, the working button 17 is pressed, the clamping cylinder 13 works to clamp the connecting column 7 of the lightning arrester 2, meanwhile, the pushing cylinder 11 works, the piston rod 11-1 of the pushing cylinder 11 stretches to push the lightning arrester 2 to move, the lightning arrester 2 enters the vertical section of the separable connector 4, after the working is completed, the reset button 18 is pressed, the clamping cylinder 13 resets, and meanwhile, the piston rod 11-1 of the pushing cylinder 11 resets to complete a working procedure.
Referring to fig. 1-2 and fig. 6-7, the lightning arrester positioning seat 3 is provided with a mounting part 3-2 at one end close to the separable connector positioning seat 5, the rotating shaft 9 is arranged on the mounting part 3-2, the positioning clamp 8 comprises a first clamping plate 8-1, a second clamping plate 8-2 and a connecting block 8-3 connected between the first clamping plate 8-1 and the second clamping plate 8-2, and a space surrounded by the upper end surface of the connecting block 8-3, the side surface of the first clamping plate 8-1 and the side surface of the second clamping plate 8-2 forms a clamping groove 8-4 for clamping and positioning the wiring terminal 6; the lower end face of the connecting block 8-3 is a limiting face 8-31, and the rear end of the clamping groove 8-4 is provided with a conical guide opening with a guiding function. In the structure, the elastic force of the reset spring 10 drives the positioning clamp 8 to rotate towards the lightning arrester positioning seat 3, and the limiting surface 8-31 is contacted with the upper end surface of the mounting part 3-2, so that the limiting effect of the positioning clamp 8 is achieved, and the limiting clamp is kept in a stable state; when the pushing cylinder 11 pushes the lightning arrester 2 to move, the lightning arrester 2 can push the positioning clamp 8 to swing towards the direction of the positioning seat 5 of the separable connector, the positioning clamp 8 overcomes the elastic force of the reset spring 10, and in the swinging process of the positioning clamp 8, the limiting surfaces 8-31 can be separated from the upper end surface of the mounting part 3-2.
Referring to fig. 1-6, the return spring 10 acts on the positioning clamp 8 and the rotating shaft 9, and in the working process, when the lightning arrester 2 is stressed to move along the lightning arrester positioning seat 3, the positioning clamp 8 rotates around the rotating shaft 9, and meanwhile, the return spring 10 can give a reaction force to ensure that the positioning clamp 8 effectively limits the lightning arrester 2.
Referring to fig. 1-2 and 6, the separable connector retainer 5 further includes a stopper portion 5-2 provided on a side of the horizontal groove 5-11, which is a side away from the vertical groove 5-12. In the above structure, the limit part 5-2 is arranged at one side of the horizontal groove 5-11, which prevents the separable connector 4 from moving during the process of installing the lightning arrester 2, and plays a role in limiting the separable connector 4.
Referring to fig. 8, the separable connector 4 is a T-shaped sheath, and includes a horizontal section and a vertical section that are communicated with each other; the horizontal section is provided with a transverse through hole, and the vertical section is provided with a vertical through hole; when installed, the lightning arrester 2 is positioned in the vertical through hole.
Example 2
When the cable is connected with the distribution equipment, a plurality of conductor cables in the cable are required to be connected respectively, in the prior art, the connection of the cable is lack of special installation tools, manual installation is mostly adopted, the connection holes of the connection terminals are difficult to ensure to be coaxial with the horizontal section of the cable connector, the connection terminals on each conductor cable and the gestures of the cable connector are difficult to ensure to be the same, the precision is very low when the cable is installed, and the gestures of the connection terminals and the cable connector are also very troublesome to adjust.
Referring to fig. 1 and 8-16, in order to solve the above-mentioned problems, the present embodiment discloses a cable connection method, which includes the following steps:
(1) Pretreatment of the cable 20;
(2) Installing a stress cone 21 on the pretreated cable 20;
(3) Fixing the stress cone 21 together with the cable 20 on an auxiliary mounting device, then mounting the connection terminals 22 on the conductor cores of the cable 20, and positioning the connection terminals 22 by the auxiliary mounting device so that the connection terminals 22 on all the conductor cores face the same direction and are on the same plane; the connection terminal 22 is then crimped onto the conductor core of the cable 20 using a crimping tool; the cable connector 24 is then mounted on the stress cone 21, the cable connector 24 being mounted with the auxiliary mounting means positioning the cable connector 24 such that the axis of the horizontal section of the cable connector 24 coincides with the axis of the connection hole 23 of the connection terminal 22; after the installation, the cable 20, the connection terminal 22, the stress cone 21 and the cable connector 24 form a whole, and the whole formed by the cable 20, the connection terminal 22, the stress cone 21 and the cable connector 24 is detached from the auxiliary installation device;
(4) The cable 20, the connecting terminal 22, the stress cone 21 and the cable connector 24 are integrally arranged on power distribution equipment, so that the power distribution equipment is connected with the cable 20, and the power distribution equipment is a power distribution cabinet or a ring main unit;
(5) Installing the lightning arrester 2 in the separable connector 4 through the lightning arrester connecting device, wherein after the lightning arrester 2 is installed, the lightning arrester 2 and the separable connector 4 form a whole;
(6) The whole of the lightning arrester 2 and the separable connector 4 is mounted on the cable connector 4 in step (4).
Referring to fig. 15 and 16, the cable connector 24 is also a T-shaped sheath, and its specific structure is the same as that of the separable connector 4. The crimping tool is a crimping pliers.
Referring to fig. 12 to 16, the cable 20 includes an outer sheath, a steel armor layer, an inner sheath, three conductor cables 20-1 disposed in the inner sheath, and a filler filled between the conductor cables 20-1 and the inner sheath; the outer sheath, the steel armor layer and the inner sheath are sequentially arranged from outside to inside; the conductor cable 20-1 includes a conductor core, an insulating layer disposed outside the conductor core, a semiconductor layer disposed outside the insulating layer, and a copper shield layer disposed outside the semiconductor layer.
Referring to fig. 12 to 16, in step (1), the pretreatment of the cable 20 specifically includes the steps of: stripping the outer sheath, stripping the steel armor layer, stripping the inner sheath, removing the filler, and separating the three conductor cables 20-1; polishing the surface of the copper shielding layer of the branching position 25 of the three conductor cables 20-1, and carrying out grounding treatment on the branching position 25; wrapping a layer of elastic sealant around the crotch 25 of the three conductor cables 20-1; and mounting cold shrink three finger sleeves or heat shrink three finger sleeves at the branching positions 25 of the three conductor cables 20-1, respectively sleeving the cold shrink sheath or the heat shrink sheath on the three conductor cables 20-1, and stripping the copper shielding layer, the semiconductor layer and the insulating layer in the upper end of the conductor cable 20-1 to expose the conductor cores.
Referring to fig. 12 to 16, in step (2), three stress cones 21 are mounted on three conductor cables 20-1, respectively.
Referring to fig. 9-16, the auxiliary mounting device comprises a main positioning die 26, a positioning pressing bar 27 and a stress cone positioning die 28 arranged at the lower end of the main positioning die 26; one end of the stress cone positioning mold 28 is hinged with the main positioning mold 26, and the other end of the stress cone positioning mold 28 is connected with the main positioning mold 26 through a detachable fixing structure 29; a stress cone positioning groove 30 for positioning the stress cone 21 is arranged between the main positioning die 26 and the stress cone positioning die 28; the main positioning die 26 is provided with a cable connector positioning groove 31 for positioning the cable connector 24, the main positioning die 26 is provided with a plurality of positioning blocks 32, and a space between two adjacent positioning blocks 32 forms the cable connector positioning groove 31; the cable connector positioning groove 31 is provided with a movable block 33 in a sliding manner, and the positioning pressing bar 27 sequentially passes through all the positioning blocks 32; the space between the positioning bead 27 and the movable block 33 constitutes a connection terminal positioning groove 34 for positioning the connection terminal 22.
The working principle of the auxiliary installation device is as follows:
Opening the stress cone positioning die 28 so that the main positioning die 26 is separated from the stress cone positioning die 28, placing the stress cone 21 together with the cable 20 on the main positioning die 26, closing the stress cone positioning die 28, clamping the stress cone 21 in the stress cone positioning groove 30, and fixing the stress cone positioning die 28 on the main positioning die 26 through the detachable fixing structure 29, wherein the stress cone 21 is completely clamped in the stress cone positioning groove 30; then, installing the connecting terminal 22 on the conductor core of the cable 20, vertically sliding the movable block 33 on the positioning block 32, installing the movable block 33 from top to bottom, and performing posture adjustment on the connecting terminal 22 on the conductor core, so that the connecting terminal 22 is tightly attached to the side surface of the movable block 33, and the connecting terminals 22 on all the conductor cores face the same direction and are positioned on the same plane; installing positioning press strips 27, wherein the positioning press strips 27 sequentially penetrate through all positioning blocks 32, so that the connecting terminals 22 are positioned in the connecting terminal positioning grooves 34, and movement is prevented during crimping; crimping the connection terminal 22 onto the conductor core using a crimping tool; then the movable block 33 is removed from the positioning batten 27; then, the cable connector 24 is mounted on the stress cone 21, during the mounting process, the cable connector positioning groove 31 positions the horizontal section of the cable connector 24, when the cable connector 24 is sleeved on the stress cone 21, the stress cone 21 positions the cable connector 24 so that the axis of the horizontal section of the cable connector 24 coincides with the axis of the connecting hole 23 of the connecting terminal 22, and finally, the cable 20, the connecting terminal 22, the stress cone 21 and the cable connector 24 are detached from the auxiliary mounting device, namely, the stress cone positioning mold 28 is opened through the detachable fixing structure 29, so that the whole can be detached.
Referring to fig. 9-14, in this embodiment, there are three conductor cables 20-1, correspondingly, there are three stress cone positioning grooves 30, the three stress cone positioning grooves 30 are uniformly arranged along a straight line, and the cable connector positioning grooves 31 are also three. The positioning batten 27 is arranged on the positioning blocks 32 in a sliding manner, and the number of the positioning blocks 32 is 4.
Referring to fig. 9-14, in the cable connection method in this embodiment, the auxiliary installation device locates multiple stress cones 21, connection terminals 22 and cable connectors 24 on one cable 20 at the same time, so that the stress cones 21 are uniformly arranged in the same plane, and meanwhile, the connection terminals 22 on all conductor cores are oriented identically and are in the same plane, so that the precision of cable connection on the power distribution equipment is improved, and the postures of all the stress cones 21, the connection terminals 22 and the cable connectors 24 on the cable 20 are identical, so that the butt joint is very simple when the power distribution equipment is connected.
Referring to fig. 10, the lower end of the positioning block 32 is provided with a first magnet 35 for fixing the movable block 33, and a second positioning magnet 36 for fixing the positioning bead 27 is provided on a side surface of one positioning block 32, so that the movable block 33 and the positioning bead 27 can be fixed when the connecting terminal 22 is positioned by providing the first magnet 35 and the second positioning magnet 36, and the positioning stability is ensured.
Referring to fig. 9-14, a limiting table 32-1 for limiting the movable block 33 is disposed at the lower end of the positioning block 32, an avoidance groove 37 for avoiding the cable connector 24 is disposed on the main positioning mold 26, the bottom surface of the avoidance groove 37 is flush with the top surface of the stress cone positioning mold 28, and a positioning surface 38 is formed by the bottom surface of the avoidance groove 37 and the top surface of the stress cone positioning mold 28. By arranging the limiting table 32-1, the movable block 33 is limited and fixed downwards, so that the movable block 33 can be fixed on the positioning block 32; by arranging the avoidance groove 37, the cable connector 24 can be avoided, and meanwhile, the cable connector 24 can be guided; the positioning surface 38 can play a role in positioning the installation height of the cable connectors 24, ensure that the installation heights of the cable connectors 24 are consistent, and simultaneously ensure that the relative positions of the cable connectors 24 and the connecting terminals 22 are accurate, thereby improving the wiring precision of the cable 20.
Referring to fig. 10, a stress cone supporting portion 30-1 is disposed at the bottom of the stress cone positioning groove 30 of the main positioning mold 26, and the purpose of the stress cone supporting portion 30-1 is to support and position the stress cone 21 when the stress cone 21 is mounted in the stress cone positioning groove 30.
Referring to fig. 10 to 11, the main positioning die 26 is provided with a check hole 44 at a position corresponding to the cable connector positioning groove 31; the inspection holes 44 can be used to inspect whether the height position of the connection terminal 22 is accurate, thereby improving the mounting accuracy of the connection terminal 22.
Referring to fig. 9 to 11, the detachable fixing structure 29 includes a fixing screw 29-1 hinged to the main positioning die 26, a fixing groove 29-2 provided on the stress cone positioning die 28, and a fixing nut 29-3 provided on the fixing screw 29-1. When the stress cone positioning die 28 is closed, the fixing screw 29-1 is rotated to enter the fixing groove 29-2, and the fixing nut 29-3 is screwed down, so that the fixing of the main positioning die 26 and the stress cone positioning die 28 can be realized; when the fixing nut 29-3 is unscrewed, the fixing screw 29-1 is moved out of the fixing groove 29-2, and the stress cone positioning die 28 can be opened.
Referring to fig. 8 to 17, the present embodiment also discloses a cable connection apparatus including a double-pass sleeve 39, a double-headed screw 40, a connection terminal 22, a stress cone 21, a cable connector 24, a conductor cable 20-1, a threaded socket 41, a stud bolt 42, a lightning arrester 2, a separable connector 4, a gasket 43, a nut 45, an insulating plug 46, and a cap 47; by means of the cable connection method, a cable connection device can be prepared.
Referring to fig. 12 and 15-17, the specific steps of step (4) include:
First, the double-ended screw 40 is mounted on the double-pass sleeve 39 on the power distribution equipment; the cable connector 24 is then mated with the double pass sleeve 39 while the double threaded screw 40 is passed through the connection hole 23 of the connection terminal 22.
Referring to fig. 3, 8 and 16-17, the specific steps of step (6) include:
(6.1) attaching one end of the threaded rod 41 to the double-ended screw 40, thereby fixing the connection terminal 22, the connection terminal 22 communicating with the power distribution equipment;
(6.2) installing a stud bolt 42 at the other end of the threaded rod 41;
(6.3) mounting the separable connector 4 on the cable connector 24 while the stud bolts 42 are passed through the connection holes 23 of the terminal block 6;
(6.4) mounting the washer 43 and the nut 45 on the stud bolt 42, thereby fixing the terminal 6;
(6.5) mounting an insulating plug 46 on the separable connector 4 to seal the separable connector 4;
(6.6) mounting a sealing cap 47 on the separable connector 4 to further seal the separable connector 4.
The foregoing is illustrative of the present invention, and is not to be construed as limiting thereof, but rather as various changes, modifications, substitutions, combinations, and simplifications which may be made without departing from the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (10)
1. The lightning arrester connecting device for cable installation is characterized by comprising a base, a lightning arrester positioning seat and a separable connector positioning seat, wherein the lightning arrester positioning seat is arranged on the base and used for positioning a lightning arrester; the separable connector positioning seat comprises a horizontal groove and a vertical groove which are matched with the horizontal section and the vertical section of the separable connector respectively, the lightning arrester positioning seat comprises a lightning arrester positioning groove matched with the outer wall of the lightning arrester, and the lightning arrester positioning groove and the vertical groove are coaxially arranged;
The base is provided with a pushing mechanism, the pushing mechanism is provided with a clamping mechanism for clamping a connecting column on the lightning arrester, and the pushing mechanism is used for pushing the lightning arrester to move along a lightning arrester positioning groove; the lightning arrester positioning seat is provided with a positioning clamp for positioning a wiring terminal on the lightning arrester, the positioning clamp is rotationally connected to the lightning arrester positioning seat through a rotating shaft, the rotating shaft is provided with a reset spring, one end of the reset spring acts on the positioning clamp, and the other end of the reset spring acts on the rotating shaft; when the lightning arrester is placed in the lightning arrester positioning groove and the wiring terminal is positioned in the positioning clamp, the axis of the connecting hole in the wiring terminal is parallel to the horizontal groove.
2. The lightning arrester connecting device for cable installation according to claim 1, wherein the pushing mechanism is a pushing cylinder, a pushing sleeve is installed on a piston rod of the pushing cylinder, and the clamping mechanism is arranged inside the pushing sleeve.
3. A lightning arrester connection device for cable installation according to claim 2, wherein the clamping mechanism is a clamping cylinder.
4. The lightning arrester connecting device for cable installation according to claim 2, wherein a positioning rod is arranged on the cylinder body of the pushing cylinder, a connecting plate is arranged on the piston rod of the pushing cylinder, one end of the positioning rod is fixedly connected with the connecting plate, and the other end of the positioning rod is slidably connected with the cylinder body of the pushing cylinder.
5. A lightning arrester connection device for cable installation according to claim 3, further comprising a control box connected to the clamping cylinder and the pushing cylinder by an air pipe; and the control box is provided with a working button and a reset button.
6. The lightning arrester connecting device for cable installation according to claim 1, wherein the lightning arrester positioning seat is provided with an installation part at one end close to the detachable connector positioning seat, the rotating shaft is arranged on the installation part, the positioning clamp comprises a first clamping plate, a second clamping plate and a connecting block connected between the first clamping plate and the second clamping plate, and a clamping groove for clamping and positioning the wiring terminal is formed by a space surrounded by the upper end surface of the connecting block, the side surface of the first clamping plate and the side surface of the second clamping plate; the lower end face of the connecting block is a limiting face.
7. A method of cable connection comprising the steps of:
(1) Pretreating a cable;
(2) Installing a stress cone on the pretreated cable;
(3) Fixing the stress cone and the cable on an auxiliary mounting device, then mounting a connecting terminal on a conductor core of the cable, and positioning the connecting terminal through the auxiliary mounting device so that the connecting terminals on all the conductor cores face the same direction and are positioned on the same plane; crimping the connection terminal onto the conductor core of the cable using a crimping tool; then installing the cable connector on the stress cone, wherein in the installation process of the cable connector, the auxiliary installation device positions the cable connector so that the axis of the horizontal section of the cable connector coincides with the axis of the connecting hole of the connecting terminal; after the cable, the connecting terminal, the stress cone and the cable connector form a whole, and the whole formed by the cable, the connecting terminal, the stress cone and the cable connector is detached from the auxiliary mounting device;
(4) Installing a whole formed by a cable, a connecting terminal, a stress cone and a cable connector on power distribution equipment;
(5) Mounting a lightning arrester in a separable connector by a lightning arrester connection device according to any of claims 1-6; after the lightning arrester is installed, the lightning arrester and the separable connector form a whole;
(6) The whole of the lightning arrester and the separable connector is mounted on the cable connector.
8. The cable connection method according to claim 7, wherein the auxiliary installation device comprises a main positioning die, a positioning pressing bar and a stress cone positioning die arranged at the lower end of the main positioning die; one end of the stress cone positioning die is hinged with the main positioning die, and the other end of the stress cone positioning die is connected with the main positioning die through a detachable fixing structure; a stress cone positioning groove for positioning the stress cone is arranged between the main positioning die and the stress cone positioning die; the main positioning die is provided with a cable connector positioning groove for positioning the cable connector, the main positioning die is provided with a plurality of positioning blocks, and a space between two adjacent positioning blocks forms the cable connector positioning groove; the cable connector positioning groove is provided with a movable block in a sliding manner, and the positioning pressing strip sequentially penetrates through all the positioning blocks; the space between the positioning pressing strip and the movable block forms a connecting terminal positioning groove for positioning the connecting terminal.
9. The cable connection method according to claim 8, wherein the lower end of the positioning block is provided with a first magnet for fixing the movable block, and the side surface of one positioning block is provided with a second positioning magnet for fixing the positioning pressing bar.
10. The cable connection method according to claim 8, wherein a limiting table for limiting the movable block is arranged at the lower end of the positioning block, an avoidance groove for avoiding the cable connector is arranged on the main positioning die, the bottom surface of the avoidance groove is flush with the top surface of the stress cone positioning die, and a positioning surface is formed by the bottom surface of the avoidance groove and the top surface of the stress cone positioning die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410825962.4A CN118412817B (en) | 2024-06-25 | 2024-06-25 | Lightning arrester connecting device and cable connecting method for cable installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410825962.4A CN118412817B (en) | 2024-06-25 | 2024-06-25 | Lightning arrester connecting device and cable connecting method for cable installation |
Publications (2)
| Publication Number | Publication Date |
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| CN118412817A true CN118412817A (en) | 2024-07-30 |
| CN118412817B CN118412817B (en) | 2024-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202410825962.4A Active CN118412817B (en) | 2024-06-25 | 2024-06-25 | Lightning arrester connecting device and cable connecting method for cable installation |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA835519A (en) * | 1970-02-24 | A. Dooley Kerry | Lightning arrestor | |
| CN103199461A (en) * | 2013-04-28 | 2013-07-10 | 国家电网公司 | Method for lifting lightning conductor of power transmission line and special portable lifter |
| CN105119180A (en) * | 2015-07-28 | 2015-12-02 | Abb技术有限公司 | Adjustable lightning arrester bracket and gas insulated switchgear |
| US20190173226A1 (en) * | 2017-12-01 | 2019-06-06 | NDElectric Co.,Ltd. | One-touch terminal for electric connection of electric cable to industrial electrical equipment including lightning arrestor |
-
2024
- 2024-06-25 CN CN202410825962.4A patent/CN118412817B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA835519A (en) * | 1970-02-24 | A. Dooley Kerry | Lightning arrestor | |
| CN103199461A (en) * | 2013-04-28 | 2013-07-10 | 国家电网公司 | Method for lifting lightning conductor of power transmission line and special portable lifter |
| CN105119180A (en) * | 2015-07-28 | 2015-12-02 | Abb技术有限公司 | Adjustable lightning arrester bracket and gas insulated switchgear |
| US20190173226A1 (en) * | 2017-12-01 | 2019-06-06 | NDElectric Co.,Ltd. | One-touch terminal for electric connection of electric cable to industrial electrical equipment including lightning arrestor |
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| Publication number | Publication date |
|---|---|
| CN118412817B (en) | 2024-09-03 |
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