WO1997017740A1 - Clamping device - Google Patents
Clamping device Download PDFInfo
- Publication number
- WO1997017740A1 WO1997017740A1 PCT/SE1996/001436 SE9601436W WO9717740A1 WO 1997017740 A1 WO1997017740 A1 WO 1997017740A1 SE 9601436 W SE9601436 W SE 9601436W WO 9717740 A1 WO9717740 A1 WO 9717740A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- clamping
- clamping device
- gap
- contact line
- ofthe
- Prior art date
Links
Classifications
-
- 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
Definitions
- the present invention relates to a clamping device which can alternatively be used for the clamping of a contact line of a current collector having a certain dimension and design, and for the clamping of other electrical conductors or parts of different dimensions and designs in electrical conductor constructions, respectively.
- Clamping devices for the purpose of grounding apparatus, to be applied to high tension lines for grounding these during major repairs, are known. See SE-B- 8204818-2, for example. These clamping devices are intended for electrical conductors of a relatively course size. They are intended to clamp conductors with a relatively broad contact surface to get as firm a grip as possible. These known clamping devices are not adapted for contact lines, as the area of contact can be damaged.
- the section of a contact line is more or less circular but with two grooves on the upper part for engagement with a wire holder.
- the part of the Iower part of the section being used for abrasion is 25% of the section of the conductor, i. e. an abrasion of 25 % is permitted, giving an unsymmetry of the section, resulting in difficulties of the clamping by means of conventional clamping devices. It is easy to clamp a contact line "obliquely", after which the clamped conductor can be turned between the clamping surfaces during the manipulating of the devices, involving a great risk for the conductor to get loose from the clamping device. Summery of the invention
- the object of the invention is to provide a clamping device to be used alternatively at the clamping of contact lines for current collectors, and for the clamping of other electrical conductors or parts, respectively.
- the advantages of the clamping device according to the invention are, that the area of current contact ofthe contact line, which is easily damaged, is protected during the clamping according to the invention, that said clamping device can be used both for the clamping of easily damaged contact lines and for the conductors or details that better tolerate stresses from the clamping, that an abrasive, unsymmetrical contact line can be clamped firmly, and that an "obliquely" clamped contact line cannot get loose from the clamping device.
- Figure 1 indicates schematically a clamping device according to the invention used as a clamping device for a contact line.
- Figure 2 indicates schematically a clamping device according to the invention used as a clamping device for another conductor.
- the clamping device comprises a fixed gripping claw 1 and a pivoting gripping claw 2 being pivoted around an axis 3 such that the gap between the gripping claws 1, 2 can be opened and closed.
- an upper surface 5 of an upwards and downwards sliding operating rod 4 (indicated by broken lines in the figures) co-operates with means 6 of the operating part 2a of the pivoting gripping claw in such a way that when the operating rod 4 moves upwards, by screwing, for example, the pivoting gripping claw 2 is forced towards the fixed gripping claw 1 and the gap is reduced.
- the gap is opened, either by the gravity influence on the operation part 2a of the pivoting clamping claw, or by spring influence, magnetic influence or otherwise.
- the rod 4 moves in a passage arranged in the fixed gripping claw 1.
- the rod can be arranged to be screwed up and down in a threaded passage (not shown in the figure).
- influence means of the operating part 2a, gripping claws 1 , 2, and another method for the displacement of the rod are possible.
- the engagement elements 8 engage with the grooves of the contact line, but the Iower part 10 of the contact line, including the area of contact 11 , is outside the engagement elements. In this way the easily damaged area of contact 11 is protected from a mechanical effect by means of the clamping device which can have an effect on or destroy the smooth area of contact 11. The contact line cannot be released from the clamping device.
- recesses 12 for the reception of a main cable 13 having a bigger dimension, see figure 2.
- These recesses can have suitably formed surfaces, with contact surfaces which are relatively broad, for the reception and the clamping of a main cable or another detail having bigger dimensions and form.
- the clamping device acts as follows. When the clamping device is hooked on the conductor or the detail to be clamped, the clamping device is open, i. e. the gripping claws 1 , 2 have a certain distance from each other forming a gap such that the contact line, main cable or the like can be picked up into the space in question.
- the operating rod 4 is at a not upwards pushed position and the operating part 2a of the rotating gripping claw 2 is lowered as a result of the gravitation or another force.
- the operation rod 4 is forced upwards (is screwed) such that the upper end 5 is affecting the means 6 of the operating part 2a, the gripping claw 2 being rotated such that the gap between the gripping claws decreases.
- the engagement elements 8 engage into the grooves of the contact line 9, 10 which is clamped.
- the described device is an example of an embodiment of the invention only.
- the devices for the opening and the closing of the gripping claws can be of another type, and the design of the gripping claws and the clamping surfaces and the operation means as well.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU75935/96A AU7593596A (en) | 1995-11-09 | 1996-11-08 | Clamping device |
DE69613390T DE69613390T2 (en) | 1995-11-09 | 1996-11-08 | LOCKING DEVICE |
EP96938595A EP0860035B1 (en) | 1995-11-09 | 1996-11-08 | Clamping device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9503970A SE506528C2 (en) | 1995-11-09 | 1995-11-09 | Clamps for electrical wiring |
SE9503970-7 | 1995-11-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997017740A1 true WO1997017740A1 (en) | 1997-05-15 |
Family
ID=20400146
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE1996/001436 WO1997017740A1 (en) | 1995-11-09 | 1996-11-08 | Clamping device |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0860035B1 (en) |
AU (1) | AU7593596A (en) |
DE (1) | DE69613390T2 (en) |
SE (1) | SE506528C2 (en) |
WO (1) | WO1997017740A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103618159A (en) * | 2013-10-31 | 2014-03-05 | 国家电网公司 | Power transmission grounding wire falling off-prevention wire clamp |
CN104253323A (en) * | 2013-08-08 | 2014-12-31 | 国家电网公司 | Ground wire operation device |
CN104375059A (en) * | 2014-11-18 | 2015-02-25 | 国网河南省电力公司平顶山供电公司 | Test device and test method for electric transmission lines of power system |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101702496B (en) * | 2009-11-27 | 2011-07-27 | 山东电力集团公司超高压公司 | Anti-induced electrical grounding wire device of circuit |
CN111817043B (en) * | 2020-08-26 | 2022-05-17 | 李德元 | Electrified fire receiving device for puncture wire clamp |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1483237A (en) * | 1921-02-12 | 1924-02-12 | Allen Iron & Steel Company | Line tapper |
US2574816A (en) * | 1949-05-10 | 1951-11-13 | Deltron Electric Products Inc | Electrical connector of the trolley tap type |
FR1367708A (en) * | 1963-06-14 | 1964-07-24 | Catu Ets | Adjustable jaws for branching and short-circuiting of electrical installations |
US3234497A (en) * | 1962-11-23 | 1966-02-08 | Wayne M Condry | Lineman's safety bridge |
-
1995
- 1995-11-09 SE SE9503970A patent/SE506528C2/en unknown
-
1996
- 1996-11-08 DE DE69613390T patent/DE69613390T2/en not_active Expired - Lifetime
- 1996-11-08 AU AU75935/96A patent/AU7593596A/en not_active Abandoned
- 1996-11-08 WO PCT/SE1996/001436 patent/WO1997017740A1/en active IP Right Grant
- 1996-11-08 EP EP96938595A patent/EP0860035B1/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1483237A (en) * | 1921-02-12 | 1924-02-12 | Allen Iron & Steel Company | Line tapper |
US2574816A (en) * | 1949-05-10 | 1951-11-13 | Deltron Electric Products Inc | Electrical connector of the trolley tap type |
US3234497A (en) * | 1962-11-23 | 1966-02-08 | Wayne M Condry | Lineman's safety bridge |
FR1367708A (en) * | 1963-06-14 | 1964-07-24 | Catu Ets | Adjustable jaws for branching and short-circuiting of electrical installations |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104253323A (en) * | 2013-08-08 | 2014-12-31 | 国家电网公司 | Ground wire operation device |
CN104253323B (en) * | 2013-08-08 | 2016-08-17 | 国家电网公司 | A kind of earth lead operation device |
CN103618159A (en) * | 2013-10-31 | 2014-03-05 | 国家电网公司 | Power transmission grounding wire falling off-prevention wire clamp |
CN103618159B (en) * | 2013-10-31 | 2015-12-30 | 国家电网公司 | A kind of transmission of electricity earth connection slip-off preventing wire clamp |
CN104375059A (en) * | 2014-11-18 | 2015-02-25 | 国网河南省电力公司平顶山供电公司 | Test device and test method for electric transmission lines of power system |
Also Published As
Publication number | Publication date |
---|---|
DE69613390T2 (en) | 2002-02-14 |
SE506528C2 (en) | 1997-12-22 |
SE9503970L (en) | 1997-05-10 |
DE69613390D1 (en) | 2001-07-19 |
EP0860035B1 (en) | 2001-06-13 |
SE9503970D0 (en) | 1995-11-09 |
AU7593596A (en) | 1997-05-29 |
EP0860035A1 (en) | 1998-08-26 |
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