NZ787587B2 - Locking grounding clamp - Google Patents
Locking grounding clamp Download PDFInfo
- Publication number
- NZ787587B2 NZ787587B2 NZ787587A NZ78758717A NZ787587B2 NZ 787587 B2 NZ787587 B2 NZ 787587B2 NZ 787587 A NZ787587 A NZ 787587A NZ 78758717 A NZ78758717 A NZ 78758717A NZ 787587 B2 NZ787587 B2 NZ 787587B2
- Authority
- NZ
- New Zealand
- Prior art keywords
- frame
- clamping member
- lock
- hot
- stick
- Prior art date
Links
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
- 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
-
- 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
- H01R11/15—Hook in the form of a screw 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
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
-
- 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
- H01R43/002—Maintenance of line connectors, e.g. cleaning
-
- 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
- H01R43/20—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for assembling or disassembling contact members with insulating base, case or sleeve
- H01R43/22—Hand tools
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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
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
Abstract
grounding clamp includes a safety lock-out which locks the operation of the clamp in the absence of a hot-stick. A clamping member cooperates with a frame having an arm, and is selectively biasable by a user to translate the clamping member relative to the frame to clamp a conductor between the clamping member and arm. The lock-out cooperates with the clamping member to prevent the translation of the clamping member unless in the presence of an insulating tool such as a hot-stick.
Claims (22)
1. A grounding clamp system having a safety lock-out mechanism, the system comprising: a grounding clamp comprising: a frame, a clamping member located at a first end of the frame, the frame and the clamping member defining a capture cavity and an opening, the opening providing access into the cavity for a conductor to be captured in the cavity, the clamping member cooperating with the frame and selectively biasable between an unclamped position wherein the clamping member is retracted to open the cavity and the opening and a clamped position wherein the cavity and the opening are closed so that the conductor is clamped against the frame by the clamping member when the conductor is positioned in the cavity, and a lock-out mounted on the frame,and a hot-stick adapted to be coupled to the frame to cooperate with the lock-out, wherein the hot-stick comprises a hot-stick head located at its one end, and wherein the hot-stick is coupled to the frame through a first couple on the hot-stick head and a corresponding second couple on the frame; wherein, in use, in the absence of the hot-stick, the lock-out locks movement of the clamping member and prevents movement of the clamping member relative to the frame and thereby prevents manual operation of the grounding clamp, and when the hot-stick is coupled to the frame, the lock-out unlocks the clamping member and allows movement of the clamping member relative to the frame to clamp the conductor positioned in the cavity.
2. The system of claim 1, wherein the lock-out has first and second positions and cooperates with the clamping member to prevent the selective biasing of the clamping member between the unclamped position and the clamped position when the lock-out is in the first position, and wherein the lock-out is normally biased into the first position, and wherein, in the second position, the selective biasing of the clamping member between the unclamped position and the clamped position is enabled; and wherein the lock-out is biased into the second position when the hot-stick is coupled to the frame.
3. The system of claim 2, wherein the clamping member has first and second opposite ends, and includes a threaded bore coupled to the second end, and wherein the frame includes a correspondingly threaded shaft, the threaded shaft rotatably journalled in the threaded bore.
4. The system of claim 3, wherein a second end of the frame includes the second couple.
5. The system of claim 4, wherein the lock-out includes a lock-out ring resiliently biased into the first position and the hot-stick head includes an actuator cooperating with the ring to bias the ring and thereby the lock-out into the second position when the hot-stick is coupled to the frame.
6. The system of claim 5, wherein the ring is resiliently biased by a resilient biasing force into a locking position when the lock-out is in the first position to thereby prevent rotation of the threaded shaft in the threaded bore, and wherein the actuator includes at least one magnet, wherein a magnetic attractive force of the at least one magnet is greater than the resilient biasing force whereby the lock-out is magnetically biased into the second position against a return biasing of the resilient biasing force.
7. The system of claim 6, wherein the resilient biasing force is provided by a spring, and wherein the frame includes a spring housing which contains the spring.
8. The system of claim 7, wherein the threaded shaft has opposite first and second ends, and wherein the second end extends from the frame so as to extend from the second couple, the second end of the threaded shaft adapted to engage the hot-stick head whereby a twisting movement of the hot-stick head caused by a corresponding twisting of the hot-stick about its length causes rotation of the threaded shaft in the bore to thereby translate the clamping member relative to the frame.
9. The system of claim 8, wherein the shaft includes an eye at the second end of the shaft, and the hot-stick head is adapted to releasably couple to the eye.
10. The system of claim 9, wherein the frame includes a clamping arm in opposed facing relation to the clamping member, wherein the clamping arm is located at the second end of the frame.
11. A grounding method using the grounding clamp system of claim 1, the method comprising: a) mounting the frame onto the hot-stick, so as to unlock the lock-out whereby the clamping member is movable; b) positioning the conductor in the cavity; and, c) rotating the hot-stick with a twisting motion about its length so as to translate the clamping member into its clamped position thereby clamping the conductor positioned in the cavity.
12. The method of claim 11, wherein the lock-out has first and second positions and cooperates with the clamping member to prevent the selective biasing of the clamping member between the unclamped position and the clamped position when the lock-out is in the first position, and wherein the lock-out is normally biased into the first position, and wherein, in the second position, the selective biasing of the clamping member between the unclamped position and the clamped position is enabled.
13. The method of claim 12, wherein the clamping member has first and second opposite ends, and includes a threaded bore coupled to the second end, and wherein the frame includes a correspondingly threaded shaft, the threaded shaft rotatably journalled in the threaded bore.
14. The method of claim 13, further comprising providing the second couple at a second end of the frame.
15. The method of claim 14, wherein the lock-out includes a lock-out ring resiliently biased into the first position and the hot-stick head includes an actuator cooperating with the ring to bias the ring and thereby the lock-out into the second position when the hot-stick is coupled to the frame.
16. The method of claim 15, wherein the ring is resiliently biased by a resilient biasing force into a locking position when the lock-out is in the first position to thereby prevent rotation of the threaded shaft in the threaded bore, and wherein the actuator includes at least one magnet, wherein a magnetic attractive force of the at least one magnet is greater than the resilient biasing force whereby the lock-out is magnetically biased into the second position against a return biasing of the resilient biasing force.
17. The method of claim 16, wherein the resilient biasing force is provided by a spring, and wherein the frame includes a spring housing which contains the spring.
18. The method of claim 17, wherein the threaded shaft has opposite first and second ends, and wherein the second end extends from the frame so as to extend from the second couple, the second end of the threaded shaft adapted to engage the hot-stick head whereby a twisting movement of the hot-stick head caused by a corresponding twisting of the hot-stick causes rotation of the threaded shaft in the bore to thereby translate the clamping member relative to the frame.
19. The method of claim 18, wherein the shaft includes an eye at the second end of the shaft, and wherein the method further comprises releasably coupling the hot- stick head to the eye.
20. The method of claim 19, wherein the clamping member is a first clamping member, and the frame includes a second clamping member in opposed facing relation to the first clamping member, the first and second clamping members located at first and second ends of the frame.
21. The system of claim 1, the system being substantially as hereinbefore described with reference to the accompanying drawings.
22. The method of claim 11, the method being substantially as hereinbefore described with reference to the accompanying drawings.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201662330377P | 2016-05-02 | 2016-05-02 | |
| NZ748707A NZ748707A (en) | 2016-05-02 | 2017-05-02 | Locking grounding clamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NZ787587A NZ787587A (en) | 2024-12-20 |
| NZ787587B2 true NZ787587B2 (en) | 2025-03-21 |
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