CN1171857A - Positive locking mechanism for in-line switch - Google Patents
Positive locking mechanism for in-line switch Download PDFInfo
- Publication number
- CN1171857A CN1171857A CN 95197121 CN95197121A CN1171857A CN 1171857 A CN1171857 A CN 1171857A CN 95197121 CN95197121 CN 95197121 CN 95197121 A CN95197121 A CN 95197121A CN 1171857 A CN1171857 A CN 1171857A
- Authority
- CN
- China
- Prior art keywords
- bar
- power line
- end member
- isolating switch
- groove
- 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.)
- Granted
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Insulators (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
An isolating switch (10) has a main sub-assembly (11) which is hung from an overhead power line prior to opposite ends of the isolating switch being permanently connected to the power line. To retain the sub-assembly on the line prior to the permanent connection being effected two spaced spring loaded keeper bars are provided. Each keeper bar (48) is mounted on a boss (43, 44) which is spaced from another boss to define a groove (21) along which the power line extends. The two bosses for each keeper bar have respective aligned grooves (45) running perpendicularly to the power line. Each keeper bar has two stable positions, a closed position in which the keeper bar lies along the two aligned grooves of the bosses to extend across the wire and an open position in which the keeper bar lies along only the groove of the boss on which the bar is mounted. In this latter position, the keeper bar extends 180 DEG from the first position. The keeper bar may be moved from position to position by engaging an eye in the bar with a hot stick, pulling the keeper bar against a bias spring and rotating the bar about a pivot pin.
Description
The present invention relates to the insulator of overhead power transmission line.The Canadian patent application sequence number NO.2 that proposes on March 26th, 1993,092,741 disclose a kind of isolating switch of overhead power transmission line, and this isolating switch has the master unit that is made of two parallel spaced insulators, and this insulator is connected by the aluminum end member in its end.This end member have respectively with two insulators in the middle of the notch of spacial alignment, make this master unit can hang on the charged power line, and this power line passes the space between notch and the insulator.From aiming at of protruding of each end member with notch but the integral stem that is positioned at below the notch be fastened on the power line by wedge shape part and C clamp tool, the position between end member disconnects power line and makes the power line separation subsequently.
For master unit is clamped on the power line, the maintenance bar is set on each end member.This maintenance bar can pivotally be contained in a side of notch, and when master unit was located on the power line, this maintenance bar can be put notch and cooperate with two double-screw bolts of notch opposite side respectively.Nut can be screwed in subsequently on the double-screw bolt so that keep the bar fix in position, and this maintenance bar is clamped in master unit on the power line.
Feature of the present invention provides a kind of improved installing mechanism.
Therefore the present invention provides a kind of isolating switch of power line with the form of summarizing, this switch comprises the master unit of being made up of the end member of each conduction, this end member is interconnected by at least one insulator and has the collimation groove that can align with power line respectively, and this isolating switch also comprises the permanent device that is fixed on the power line of end member.This master unit has in that end member is permanent and master unit is installed in device on the power line before being fixed on the power line, wherein this erecting device comprises: two keep bar, each maintenance bar can pivotally be contained on the corresponding end member and can operate by hand it is pivoted between the primary importance and the second place, when primary importance, keep bar to leave groove fully, and when the second place, keep the bar cross grooves, thereby master unit is remained on the power line; Brake apparatus is configured on the end member separately to cooperate with corresponding maintenance bar; Spring assembly, when keeping bar to be in the second place, this spring assembly applies active force is meshing with each other maintenance bar and brake apparatus, thereby will keep bar to remain on the second place.
Specifically in a preferred embodiment, brake apparatus comprises the breaker slot of collimation, and this groove is formed on the protuberance of a pair of rising, and this protuberance is positioned at the both sides of the groove of putting power line respectively.When keeping bar to be positioned at the second place, this maintenance bar is arranged in the breaker slot of collimation hidingly; And when keeping bar to be positioned at primary importance, turn to 180 ° of angles to extend in the breaker slot that this maintenance bar only is mounted in it and from the second place.
Though the present invention is specially adapted to Canadian patent application sequence number No.2,092,741 power line insulator, but clearly, the present invention also is applicable to the power line insulator of other type, wherein before being fixed on the insulator end on the power line, the part of this insulator is suspended on the power line.
The isolating switch of power line comprises the master unit by two conduction end component sets one-tenth, this end member is connected with each other by at least one insulator and has each the autocollimatic groove that can aim at power line, this isolating switch also comprises the permanent fastener that is fixed on the power line of end member, this master unit has in that end member is permanent and master unit is installed on the power line two before being fastened on the power line and keeps bars, each keeps bar can pivotally be installed on the corresponding member in the end member and available manual operations keeps bar to pivot between the primary importance and the second place, this maintenance bar breaks away from groove fully when primary importance, and when the second place, should keep the bar cross grooves, thereby master unit is remained on the power line; Brake component, these parts are arranged on each end member to cooperate with corresponding maintenance bar; Spring members, when keeping bar to be positioned at the second place, this spring applies active force is meshing with each other maintenance bar and brake component, thereby will keep bar to remain on the second place.
Illustrate in greater detail the present invention below with reference to accompanying drawing, wherein:
Fig. 1 is Canadian patent application sequence number No.2, the end view of the partial exploded view of 092,741 isolating switch;
Fig. 2 is the vertical view of isolating switch master unit shown in Figure 1;
Fig. 3 is the end view of isolating switch shown in Fig. 1 and 2, this switch is shown is fastened on the power line;
Fig. 4 is the vertical view that is fastened on the isolating switch on the power line;
Fig. 5 is the vertical view that the isolating switch master unit of installing mechanism of the present invention is housed;
Fig. 6 is the end view of master unit shown in Figure 5;
Fig. 7 is the details enlarged drawing of Fig. 6 circle part A;
Fig. 8 is the sectional view along the 8-8 line intercepting of Fig. 5;
Fig. 9 illustrates to keep bar how opening and closing the schematic diagram that moves between the position;
Figure 10 is the view that is similar to Fig. 8, but the embodiment of remodeling slightly is shown.
At first with reference to Fig. 1 and 2, isolating switch 10 comprises master unit 11, two C shape parts 12, two wedge shape parts 13 and two cross-over connection posts 14.
Master unit 11 is made of the end member 15 of two aluminums, this end member separates certain distance by two duplicate parallel spaced insulators 16, each insulator is made of fiberglass pole 17 and one group of isolated disk that fuses 18 usually, these fiberglass pole 17 outside rubber that paste, this disk 18 also posts rubber.Insulator 16 also can be a porcelain.Insulator 16 utilizes any suitable for example crimping method of method to be firmly attached to end member 15.
Each end member 15 has rectangle part 20 substantially, this rectangle part have hold within it 22 and outer end 23 between the perforation notch 21 that extends.Two notches 21 mutually be parallel to fiberglass pole 17 and the central axial line between this fiberglass pole is aimed at.Each end member also comprises bar 24, and this bar for example adopts welding to be fixed on the rectangle part 20 and from the outer end to stretch out, this bar 24 with the axis alignment of notch 21, as shown in Figure 2, but be lower than the height of groove 21, as shown in Figure 1 slightly.The free end of bar 24 has the eyelet 25 that can cooperate with hot stick or lifter.
Each end member 15 is by keeping bar 28 to cooperate, and this maintenance bar 28 can pivotally be contained on the pin 29 that stretches out from the upper surface as shown in Figure 2 30 of rectangle part 20.This maintenance bar 28 can be put notch, made to cooperate with the double-screw bolt 32 that stretches out from upper surface 30 equally at the otch 31 that keeps forming on the position away from pin 29 on the bar.Then the nut (not shown) is screwed on the double-screw bolt 32, keeps bar to be fixed on position shown in Figure 2 thereby make.
Two C shape parts 12 and wedge shape part 13 also are formed from aluminium, and they are to be used to make two interconnective well-known parts of conductor.Each C shape parts 12 has the passage 33 of isolated bending.Barrier assembly comprises two cross-over connection posts 14, and this cross-over connection cylindricality becomes aluminium bar or the zinc-plated copper rod that bent angle is arranged.
Referring now to Fig. 3 and 4, these illustrate the isolating switch 10 that is fastened on the power line 35.For barrier assembly is put on the power line, making power line 35 aim at and swing along notch 21 keeps bar 28 to make it cross corresponding notch 21, to keep bar 28 to be fixed on the double-screw bolt 32 with the nut (not shown) subsequently, master unit 11 can be suspended on the power line thus.This step is preferably carried out like this, at first master unit 11 is placed on the top of power line 35 that is:, the fixing then bar 28 that keeps, and the 35 rotation master units 11 that wind the line at last make maintenance bar 28 be positioned at the top of line 35, shown in Fig. 3 and 4.Also can adopt other installation method.
After hanging over master unit 11 on the power line 35, C shape parts 12 are hung over the top of power line 35 and it is alignd with the bar 24 of each end member 15 respectively.Therefore the bending channel 33 of each C shape parts 12 surrounds one of them bar 24 and a part of power line 35.Then cross-over connection post 14 is placed in another crooked passage of C shape parts respectively, and utilize explosive driven tool (powder actuated tool) wedge shape part 13 to be pressed into C shape parts, thereby make power line 35 be securely fixed on the bar 24 and cross-over connection post 14 is fastened on the C shape part in known mode.
The upper surface of bar 24 be preferably shaped to can with the surface complementarity of bending channel 33, thereby form the space that is used to hold power line 35 be roughly circular cross-section.
In case isolating switch 10 and power line 35 tighten together, just between two insulators 16, preferably cut off power line with wire nipper with the equidistant substantially position of two end members 15.Should be pointed out that can be not wired when power line 35 is cut off recoil or the motion of anchor clamps 12,13.Upwards draw two ends of cutting off then and it is separated from each other, thereby power line 35 is disconnected, perhaps can cut off the part between the end fully.
The jumper cable (not shown) can be connected across on the above-mentioned cross-over connection post 14, thereby power line is switched on again.Perhaps as above-mentioned Canadian patent application sequence number No.2, describe in detail in 092,741 like that, isolating switch can have a disconnecting link switch, this disconnecting link switch be configured in insulator 16 following, be parallel to this insulator and be connected across on the end member.This disconnecting link switch of manual operation just optionally makes power line energising or energising again.
The present invention is specifically related to make master unit 11 be fastened on the improvement of the mechanism on the power line 35 between fixation of C shape parts 12 and complementary wedge shape part 13.Shown in Fig. 1 to 4, previous disclosed mechanism comprises maintenance bar 28, pin 29 and double-screw bolt 30.
For understanding the improved installing mechanism of the present invention, should be with reference to figure 5 to 9.
Remove following aspect, the Switch shown in Fig. 5 to 9 is similar to the switch shown in Fig. 1 to 4.At first, disconnecting link switch 39 is arranged on the following of insulator 16 and is parallel to this insulator, but as implied above, and this is at Canadian patent application sequence number No.2, and is disclosed in 092,741, irrelevant with the present invention.
Secondly, Fig. 1 to 4 illustrates switch with prototype form, this switch has the end member 15 of simplification, this end member has rectangle part 20, bar 24 is welded on this rectangle part 20, and Fig. 5 and 6 illustrate end member 15 with product performance ', each end member be cast into one have bar 24 ' the fork-shaped plate.
In the end member of this form, do not run through notch 21 on the fork-shaped plate 15 and replace groove 21 ', this groove 21 ' rectangle part 20 substantially ' the inner 22 ' and outer end 23 ' between extend and with aim at along the similar groove 20 of bar 24 ' extension.
Two alar parts 41 and rectangle part 20 ' monolithic molding, these alar parts terminate in isolated arm 42, this arm 42 be parallel to groove 21 ' extension but be higher than rectangle part 20 ' the plane, shown in Fig. 6 and 8.With suitable method for example crimping make insulator 16 be firmly attached to arm 42.
In alar part 41 and rectangle part 20 ' junction, the whole protuberance that is substantially rectangle 43 and 44 that forms two risings on this rectangle part, groove 21 ' both sides a this protuberance is respectively arranged.These protuberances constitute a part that is used for switch master unit 11 temporarily is installed in the mechanism of power line 35 of the present invention.More specifically, on the upper surface of each protuberance, form groove 45, in Fig. 7, can know and see this groove with parallel flat side and planar base surface.The groove 45 of two protuberances is transverse to the groove 21 that holds power line 35 ' and mutually aim at, and each groove 45 extends through the whole width of protuberance 43 or 44.
Keep bar 48 to utilize bolt 49 to be contained in rotationally on the protuberance 43.Specifically as shown in Figure 7, hole 50 passes completely through rectangle part 20 ' and the thickness of protuberance 43, and the relative narrower part 51 in hole 50 is led to the bottom 52 of the groove 45 of protuberance 43 between two parties, relatively wider portion 53 then lead to rectangle part 20 ' bottom surface 54.
Bolt 49 will be contained in the hole 50, make the head 56 of bolt be contained in the part 53 in hole 50, then 50 part 51 protrudes upward the upper threaded end part 57 of bolt from the hole, and this threaded portion is screwed in the screwed hole 58 of an end of the most close maintenance bar that forms on the bottom surface 59 that keeps bar 48 herein.
The wide part 53 in the shape of bolt head 56 and diameter and hole 50 consistent, so this head can slide with respect to this hole.Helical spring 60 is set on the unthreaded portion of bolt 49, and an end of this helical spring engages with the shoulder 61 that forms between the part 51 and 53 in hole 50.The size of spring 60, hole 50 and bolt 49 makes and under normal circumstances to keep bar 48 to be subjected to the effect of spring 60 and be located in securely in the groove 45 of protuberance 43.
Keep bar 48 to have flat bottom surface 62 and the parallel flat side 63 that is slightly smaller than groove 45 width spaced apart, and flat end face extend through the most of length that keeps bar.Yet, keep bar 48 having thicker part 64, and on this thicker part 64, form eyelet 65 near an end place.
Before being placed on master unit 11 on the power line 35, the operator should guarantee each fork-shaped plate 15 ' the maintenance bar be positioned at dotted line position shown in Figure 8.This position is the position of opening, because keep not two protuberances 43 of bridge joint and 44 but rotate 180 ° and extend away from protuberance 44 of bar in this position.If keep bar to be among Fig. 8 by the off-position shown in the solid line, then the maintenance bar is up pulled out in the operator's effect that only need revolt spring 60 from groove 45, when groove 45 is left in the bottom surface 62 that keeps bar, the operator makes and keeps bar to rotate 180 ° aiming at groove 45 again up to it, but be positioned at open position this moment, and should keep bar interlock is in place fast in this position.This operation is shown in Fig. 9.
Make hot stick be matched with eyelet 65 then and master unit 11 is elevated on the power line 35.So just, master unit is placed on the power line 35, this moment, protuberance 43 and 44 pairs of landing grounds extended downwards.Then in this position by keeping handling the bar operation as above-mentioned opening that hot stick draws and twist operation, make two to keep bars 48 to rotate 180 ° and forward off-position to.
When each kept bar to rotate, it slided on protuberance 43, was engaged in the groove 45 of protuberance 43 then apace and in the collimation groove 45 of protuberance 44.When keeping bar 48 to be positioned at off-position, just can rotate master unit 11, make it by keep bar and engaging of power line be suspended on power line 35 below.Very big spring bias and the positive engagement between maintenance bar and collimation groove can be guaranteed to keep bar to be maintained in its closed position.
If particularly switch is not installed with hot stick, then do not need to make to keep bar to forward 180 ° fully open position to.Keep bar fully to leave relative protuberance 44 as long as make, then master unit 11 can be placed on the power line, make by aforementioned manner then to keep bar to close to expose power line groove 40.Therefore the position that can obtain to open is shifted out the maintenance bar and is made its position that forwards 90 ° to from groove 45 in this position, keeps bar to meet at right angles along upper surface and its groove 45 of protuberance 43 in this position of 90 °.The spring bias that is produced by helical spring 60 is enough to make and keeps bar to be pressed against remaining on open mode on the protuberance 43 being placed on the power line 35 up to master unit 11, just can keep this moment bar forward off-position to.
In the embodiment shown in fig. 10, protuberance 44 does not have groove 45, replaces to reduce to protrude 44, and the amount of reduction equals the degree of depth of groove 45.Therefore on off-position, maintenance bar 48 is contained in the groove 45 and passes across two spaces between the protuberance, keeps the free end of bar to engage with the upper surface of protuberance 44.Though this is not a preferred embodiment, be sure of that the maintenance bar of this embodiment can be operated satisfactorily, make master unit can remain on the power line 35.
Should be pointed out that helical spring 60 only provides an embodiment of the spring of essential bias effect, as another embodiment, can also use a kind of spring wave liner and that be known as the wave spring that is similar to.
Claims (10)
1. the isolating switch of a power line, it comprises: by the master unit that the end member of two conductions constitutes, this end member is interconnected by at least one insulator and has the collimation groove that aligns with power line respectively; End member permanently is fastened on secure component on the power line; Described master unit has: two that before being permanently secured to end member on the power line master unit are contained on the power line keep bar, each keeps bar can pivotally be contained on the corresponding member in the end member and can operate by hand making each keep bar to pivot between the primary importance and the second place, when primary importance, keep bar to break away from groove fully, and when the second place, keep the bar cross grooves, thereby master unit is remained on the power line; Brake component is configured on each end member to cooperate with corresponding maintenance bar; Spring members, this spring members applies active force and makes and keep bar and brake component to be meshing with each other when keeping bar to be in the second place, thereby will keep bar to remain on the second place.
2. an isolating switch as claimed in claim 1 is characterized in that, spring assembly comprises the helical spring that is contained on the pivotal parts, keeps bar can pivotally be contained on this pivotal parts, and helical spring applies bias voltage towards the respective end member to keeping bar.
3. isolating switch as claimed in claim 1, it is characterized in that, spring assembly comprises the wave spring that is contained on the pivotal parts, keeps bar can pivotally be contained on this pivotal parts, and the wave spring applies bias voltage towards the respective end member to keeping bar.
4. isolating switch as claimed in claim 1, it is characterized in that, brake component is one and is configured on the end member and the detent recess of extending transverse to the groove that holds power line substantially, when keeping bar to be in the second place, the size Concealable ground of this detent recess holds the maintenance bar in wherein.
5. isolating switch as claimed in claim 4, it is characterized in that, keep bar to rotate pivotally, when keeping bar to be in primary importance around one end thereof, the size Concealable ground of detent recess holds and keeps bar in wherein, separately 180 ° of first and second positions.
6. isolating switch as claimed in claim 5, it is characterized in that, detent recess is positioned on first protuberance that is arranged on the end member, this protuberance is positioned at a side of the groove that holds power line, second protuberance is positioned at the opposite side of collimation groove and aims at first protuberance, so that mesh with keeping bar when the second place.
7. an isolating switch as claimed in claim 6 is characterized in that, the detent recess of second protuberance is aimed at the detent recess of first protuberance, so that put the maintenance bar when the second place.
8. an isolating switch as claimed in claim 7 is characterized in that, the planar base surface that each detent recess has parallel flat side and is meshed with maintenance bar complementary surface.
9. an isolating switch as claimed in claim 1 is characterized in that, keeps bar to have the eyelet that meshes with hot stick.
10. an isolating switch as claimed in claim 4 is characterized in that, the planar base surface that each detent recess has parallel flat side and is meshed with maintenance bar complementary surface.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2135263 CA2135263C (en) | 1994-11-07 | 1994-11-07 | Positive locking mechanism for in-line switch |
| CA2135263 | 1994-11-07 | ||
| CA2,135,263 | 1994-11-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1171857A true CN1171857A (en) | 1998-01-28 |
| CN1054696C CN1054696C (en) | 2000-07-19 |
Family
ID=4154621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95197121A Expired - Fee Related CN1054696C (en) | 1994-11-07 | 1995-10-13 | Positive locking mechanism for in-line switch |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN1054696C (en) |
| BR (1) | BR9509614A (en) |
| CA (1) | CA2135263C (en) |
| WO (1) | WO1996014649A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11735151B2 (en) * | 2020-11-26 | 2023-08-22 | Lance R. McCormick | Electric guitar pickup selector switch position lock |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4814550A (en) * | 1987-06-26 | 1989-03-21 | Black Hills Engineering & Development Corp. | Power line isolating apparatus and method |
| CA2092741C (en) * | 1993-03-26 | 2004-05-25 | Rocco Vallentino Laricchia | In-line isolator |
-
1994
- 1994-11-07 CA CA 2135263 patent/CA2135263C/en not_active Expired - Lifetime
-
1995
- 1995-10-13 WO PCT/US1995/012946 patent/WO1996014649A1/en active Application Filing
- 1995-10-13 BR BR9509614A patent/BR9509614A/en not_active Application Discontinuation
- 1995-10-13 CN CN95197121A patent/CN1054696C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2135263A1 (en) | 1996-05-08 |
| BR9509614A (en) | 1997-09-30 |
| WO1996014649A1 (en) | 1996-05-17 |
| CN1054696C (en) | 2000-07-19 |
| CA2135263C (en) | 2004-05-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20000719 Termination date: 20111013 |