US3344224A - Hold-down weight for conductor supporting clamps - Google Patents
Hold-down weight for conductor supporting clamps Download PDFInfo
- Publication number
- US3344224A US3344224A US3344224DA US3344224A US 3344224 A US3344224 A US 3344224A US 3344224D A US3344224D A US 3344224DA US 3344224 A US3344224 A US 3344224A
- Authority
- US
- United States
- Prior art keywords
- clamp
- weight
- hold
- body member
- conductor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000004020 conductor Substances 0.000 title claims description 56
- 239000000203 mixture Substances 0.000 claims description 10
- 239000002131 composite material Substances 0.000 claims description 8
- 239000012212 insulator Substances 0.000 description 10
- 230000037250 Clearance Effects 0.000 description 6
- 230000035512 clearance Effects 0.000 description 6
- 239000000725 suspension Substances 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 125000000998 L-alanino group Chemical group [H]N([*])[C@](C([H])([H])[H])([H])C(=O)O[H] 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
Images
Classifications
-
- 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
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/14—Arrangements or devices for damping mechanical oscillations of lines, e.g. for reducing production of sound
Definitions
- a conductor supporting clamp hold-down weight having a cavity in its upper surface contoured to nest under and around and closely adjacent the lower portion of the supporting clamp.
- Securing members connect the holddown weight to the keeper of the supporting clamp with the body of the clamp therebetween to secure the clamp body to the hold-down weight and to a conductor.
- the exterior surface of the hold-down weight is rounded and smoothly contoured to provide an electrical shield.
- This invention relates to a hold-down weight for a conductor supporting clamp and more particularly to a hold-down weight which is employed at a transmission line support point to prevent up-lif of the suspension clamp under unusual conditions of terrain and line tension.
- hold-down weights are employed to maintain a positive loading on the various hardware components and insulator linkages to prevent sparking and attendant radio noise. Also, such holddown weights are employed at tower jumper suspensions where, with the short span of conductor on the clamp and insulator string, there is no natural weight to hold connection pieces tightly. Holddown weights are also employed to add an additional vertical force component to reduce the angular swing of the insulator string under wind loadings. While various types of hold-down weights have been proposed, they eX- tend a substantial distance from the conductor supporting clamp whereby they do not provide for sufficient electrical clearances. Also, additional clamping means has been required to attach the weight to the clamp and the exposed surfaces of the weight and securing means therefor have not served as an electrical shield to prevent corona.
- An object of our invention is to provide a hold-down weight which is contoured to nest under and around the lower portion of a conductor supporting clamp to provide a composite unit that is compact whereby proper electrical clearances may be maintained.
- Another object of our invention is to provide a hold down weight for a conductor supporting clamp in which the weight is secured to the supporting clamp by retaining elements which also secure the conductor to the supporting clamp.
- Another object of our invention is to provide a holddown weight for a conductor supporting clamp in which the exterior surfaces thereof are rounded and smoothly contoured to provide an electrical shield for the line support point.
- a still further object of our invention is to provide a hold-down weight of the character designated which shall be extremely simple of construction, economical of manufacture and one which may be installed with a minimum of effort and without modifying the supporting clamp in any way.
- FIG. 1 is a side elevational view, partly broken away and in section, showing the hold-down weight secured to a conventional supporting clamp;
- FIG. 2 is an end elevational view of the apparatus shown in FIG. 1;
- FIG. 3 is a sectional view taken generally along the line 3-3 of FIG. 1;
- FIG. 4 is an elevational view showing a pair of holddown weights secured to laterally spaced conductor supporting clamps.
- FIG. 5 is a view corresponding to FIG. 3 showing the hold-down weight secured in place by cap screws.
- a conventional type suspension clamp 10 which is connected by a pin 11 to a socket connector 12 which in turn is detachably connected to the lower end of an insulator string indicated generally at 13.
- the clamp 10 is provided with a groove therein for receiving a conductor 14.
- the clamp 10 is also provided with the usual keeper 16 which is secured in place by U-bolts 17 having retaining nuts 18.
- Our improved hold-down weight comprises a weight body member 19 having a cavity 21 therein which is contoured to nest under and around the lower portion of the supporting clamp 10 to provide a composite unit, as shown in FIGS. 1-3. That is, the cavity 21 is of a shape to receive the lower portion of the supporting clamp 10 with a snug fit to provide a compact unit.
- the weight body member 19 is provided with side members 22 which extend upwardly along opposite sides of the supporting clamp 10, as shown in FIGS. 2 and 3.
- the upper surfaces of the sides 22 are rounded and smoothly contoured, as shown.
- the lower edges and ends of the weight body member 19 are rounded and smoothly contoured whereby the weight unit serves as an electrical shield.
- openings 20 are provided in the weight body member 19 for receiving the legs of the U-bolts 17.
- recesses 23 are provided in the weight body member 19 in position to receive the bases of the U-bolts 17 whereby the U-bolts not only serve to secure the keeper 16 in place but also serve to secure the hold-down weight to the supporting clamp 10. That is to say, the legs of the U-bolt 17 are of a length to receive an intermediate portion 24 of the weight body member 19, as shown in FIGS. 1 and 3, whereby the U-bolts perform the function of securing the weight member 19 in place and at the same time draw the keeper 16 into clamping engagement with the conductor 14, as shown.
- FIG. 4 of the drawing we show a pair of weight body members 19 secured to laterally spaced conductor supporting clamps 10 which in turn are connected to a yoke plate 26 by link members 27 in a manner well understood in the art.
- the yoke plate 26 is shown as being supported by insulator strings 28.
- the weight body member 19 is positioned adjacent the under surface of the supporting clamp 10 and the U-bolts 17 are inserted through the openings 20 in the weight body member, as shown in FIGS. 1 and 3, whereby the intermediate portion 24 is inwardly of the base of each U-bolt.
- the legs of the U-bolt thus extends through openings in the keeper 16 and the retaining nuts 18 are tightened whereby the weight body member 19 is secured firmly to the supporting clamp 10 and at the same time the keeper 16 moves into clamping engagement with conductor 14. Accordingly, the hold-down weight is installed at the same time the supporting clamp 10 is moved into clamping relation to the conductor 14.
- FIG. 5 of the drawing we show a modified form of our invention in which the body member indicated at 19 is secured to the supporting clamp by cap screws 25. Threaded openings 25 are provided in the body member 19 for receiving the cap screws 25. Also, the body member 19 is provided with side members 22 which extend upwardly along opposite sides of the clamp 10, whereby the body member is contoured to nest under and around clamp 19.
- a hold-down weight body member having a cavity in its upper surface contoured to nest under and around and adjacent the lower portion of the supporting clamp to provide a composite unit that is compact
- clamping means connecting said weight body member to said keeper with said clamp body therebetween and thereby securing said clamp body to said weight body member and to a conductor positioned between said keeper and said clamp body.
- clamping means comprises cap screws connecting said weight body member to said keeper with said clamp body therebetween and thereby securing said clamp body to said weight body member and to a conductor positioned between said keeper and said clamp body member.
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Description
Claims (1)
Publications (1)
Publication Number | Publication Date |
---|---|
US3344224A true US3344224A (en) | 1967-09-26 |
Family
ID=3459384
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US3344224D Expired - Lifetime US3344224A (en) | Hold-down weight for conductor supporting clamps |
Country Status (1)
Country | Link |
---|---|
US (1) | US3344224A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4935274Y1 (en) * | 1969-04-16 | 1974-09-25 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR633620A (en) * | 1927-04-30 | 1928-02-01 | Ball joint conductor carrier for power lines | |
US2271935A (en) * | 1937-12-04 | 1942-02-03 | Gen Cable Corp | Vibration damper |
AT165595B (en) * | 1948-10-27 | 1950-03-25 | Siemens Schuckertwerke Gmbh | Electric overhead line |
US2699462A (en) * | 1950-11-13 | 1955-01-11 | Boeing Co | Anticorona transmission line suspension clamp |
-
0
- US US3344224D patent/US3344224A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR633620A (en) * | 1927-04-30 | 1928-02-01 | Ball joint conductor carrier for power lines | |
US2271935A (en) * | 1937-12-04 | 1942-02-03 | Gen Cable Corp | Vibration damper |
AT165595B (en) * | 1948-10-27 | 1950-03-25 | Siemens Schuckertwerke Gmbh | Electric overhead line |
US2699462A (en) * | 1950-11-13 | 1955-01-11 | Boeing Co | Anticorona transmission line suspension clamp |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4935274Y1 (en) * | 1969-04-16 | 1974-09-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: BETHEA/RELIABLE POWER PRODUCTS, INC., 3098 HIGHWAY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BETHEA ELECTRICAL PRODUCTS, INC.;REEL/FRAME:004799/0024 Effective date: 19871012 Owner name: BETHEA/RELIABLE POWER PRODUCTS, INC., 3098 HIGHWAY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:BETHEA ELECTRICAL PRODUCTS, INC.;REEL/FRAME:004799/0024 Effective date: 19871012 |
|
AS | Assignment |
Owner name: RELIABLE/BETHEA POWER PRODUCTS, INC., AN AL CORP., Free format text: TO CORRECT NAME OF ASSIGNEE AND PATENT NUMBER 3,684,22 IN A PREVIOUSLY RECORDED INSTRUMENT RECORDED AT REEL 4799, FRAME 024 DECEMBER 7, 1987.;ASSIGNOR:BETHEA ELECTRICAL PRODUCTS, INC.;REEL/FRAME:005036/0008 Effective date: 19871012 |