CN111641157A - Insulator closed fixture - Google Patents
Insulator closed fixture Download PDFInfo
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- CN111641157A CN111641157A CN202010523453.8A CN202010523453A CN111641157A CN 111641157 A CN111641157 A CN 111641157A CN 202010523453 A CN202010523453 A CN 202010523453A CN 111641157 A CN111641157 A CN 111641157A
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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
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Abstract
The invention provides an insulator closed type clamp, relates to the technical field of power transmission line maintenance, and solves the technical problem of poor universality of insulator clamps. The device includes the card body, card lid and two at least jack catchs, is formed with the bayonet socket that is used for holding the insulator steel cap between the card body and the card lid, and all jack catchs set up on the card body and the card lid along the circumference interval of bayonet socket, and all have the slot part with the peripheral looks adaptation of insulator steel cap on the jack catch, are formed with the block space and the block space that are used for restricting insulator steel cap axial displacement between all slot parts and allow insulator steel cap at its inside circumferential direction. The clamping space formed by the groove parts on the clamping jaws limits the axial movement of the insulator, so that the length of a line contacting the clamping apparatus and the steel cap is reduced; and the steel cap can be in the peripheral rotation in block space, can realize more effectual steel cap defect of avoiding to the same model insulator of adaptation not unidimensional has improved the commonality of fixture for the insulator.
Description
Technical Field
The invention relates to the technical field of power transmission line maintenance, in particular to an insulator closed type fixture.
Background
The insulator is a disc-shaped insulating control hung at one end of a high-voltage wire connecting tower, can play an important role in an overhead transmission line, has the function of increasing creepage distance and is usually made of glass or ceramics. In the operation of a high-voltage line, the insulator is easy to have a low value or a zero value under the long-term influence of the operation voltage, which brings hidden troubles to the safe operation of the line, so that the insulator needs to be maintained or replaced.
The existing insulator clamp generally comprises a front clamp body and a rear clamp body, wherein the front clamp body and the rear clamp body are provided with semicircular arc grooves, and a circular (or oval) bayonet capable of clamping an insulator steel cap is formed in the middle when the front clamp body and the rear clamp body are connected into a whole, wherein the front clamp body and the rear clamp body are directly contacted with the whole periphery of the insulator steel cap.
According to the production process and the current application situation of domestic insulators, the applicant finds that the prior art at least has the following technical problems in the replacement work of overhauling porcelain insulators:
on one hand, although the mechanical performance and the electrical performance of the porcelain insulator with the same specification are unified at present, the front-end steel caps of the porcelain insulator are not unified, so that when manufacturers process insulators with the same specification, the sizes and the shapes of the steel caps are different, and even steel caps with the same model and different batches have different specifications, for example, for an alternating current insulator of 420KN, clamps with two specifications exist on the market, when the insulator needs to be replaced, the clamps need to be processed according to the size of each steel cap, for example, a string of insulators with multiple batches is provided, and multiple sets of clamps need to be carried, so that the production cost is wasted, and the operation efficiency is seriously influenced.
On the other hand, in the prior art, the insulator of the same model has millimeter-scale precision error in size, and the roundness of the steel cap is uneven due to uncontrollable factors in the processes of demoulding and trimming, even steel slag bulges or unevenness caused by demoulding collision and incomplete trimming after the trimming die is abraded exist. And the above-mentioned closed fixture structure of conventional use is because preceding card body and the direct whole periphery contact with insulator steel cap of back card body, can't effectively avoid these defects, is difficult to effectively fixed insulator. In order to solve the problems, the conventional common method is to map and machine the bayonet of the clamp according to the insulator (including the production defects on the steel cap) held by a hand so as to enable the bayonet to be matched with the steel cap; the defects on each insulator steel cap are different, so that the universality of the fixture is reduced.
Disclosure of Invention
The invention aims to provide an insulator closed type clamp, which aims to solve the technical problem that the insulator clamp in the prior art is poor in universality; the technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the invention are described in detail in the following.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides an insulator closed type clamp, which comprises a clamp body, a clamp cover and at least two clamping jaws, wherein:
the card body with be formed with the bayonet socket that is used for holding the insulator steel cap between the card lid, all the jack catch is followed the circumference interval of bayonet socket set up in the card body with on the card lid, just all there is the slot part with the peripheral looks adaptation of insulator steel cap on the jack catch, all be formed with the block space that is used for restricting insulator steel cap axial displacement between the slot part just the block space allows the insulator steel cap at its inside circumferential direction.
Preferably, the groove part is an arc-shaped groove, the arc-shaped groove is used for limiting the axial movement of the steel cap by the upper end and the lower end of the steel cap ring, and a movable gap is formed between the arc-shaped groove and the periphery of the steel cap ring.
Preferably, the arc wall includes last butt portion, middle groove and the lower butt portion that from top to bottom connects gradually, go up the butt portion with the up end butt of steel cap hatband, down the butt portion with the lower terminal surface butt of steel cap hatband, just the internal diameter in middle groove is greater than the external diameter of steel cap hatband is in order to form the clearance.
Preferably, the card body with be provided with the mounting groove on the inner circle of card lid, keeping away from of jack catch one side of slot part is provided with the rotation portion, the rotation portion set up in the mounting groove and can the mounting groove internal rotation.
Preferably, the mounting groove be by the bayonet socket to the card body or the peripheral V type groove that extends of card lid, rotation portion be with the V type ear of V type groove looks adaptation, just the rotation portion go up vertically wear to be equipped with be used for with the locking piece that the upper and lower both ends of mounting groove are connected, the jack catch can with the locking piece is in for the axle the level rotates in the bayonet socket.
Preferably, the groove diameter of the mounting groove is larger than the outer diameter of the rotating part so that the jaw can rotate in the mounting groove with the locking member as an axis in a range of ± 4 ° to ± 10 °.
Preferably, the card body with all be provided with two on the card lid the jack catch, and all the jack catch is in evenly arranged in the jack catch.
Preferably, the card body with the card lid amalgamation forms the circular shape the bayonet socket, the card body with the connection can be dismantled to the one end of card lid, the card body with the other end of card lid is articulated.
Preferably, a connecting groove is formed in a connecting portion of the card body and the card cover, a pin shaft penetrates through the upper end surface and the lower end surface of the connecting groove, a rotating connecting piece is connected to the pin shaft, and the rotating connecting piece is used for enabling one end of the card cover to rotate by taking the pin shaft as a shaft.
Preferably, the rotary connecting piece comprises a screw rod and a hinged part arranged at one end of the screw rod, a through hole for the pin shaft to pass through is formed in the hinged part, the clamping cover is connected with the screw rod, and the clamping cover can rotate by taking the pin shaft as an axis through the hinged part; and one end of the card cover, which is used for being connected with the card body, is provided with an open slot so as to facilitate the opening of the card cover from the end.
Compared with the prior art, the insulator closed type clamp provided by the invention has the following beneficial effects:
the clamping jaws which are circumferentially arranged at intervals are arranged in the bayonet formed between the clamping body and the clamping cover, and the axial movement of the insulator steel cap is limited through a clamping space formed by the groove parts on the clamping jaws, so that the length of a line for contacting the clamping tool with the steel cap is reduced, and the contact with defects on the steel cap is further avoided; and the steel cap can be in the peripheral rotation in block space, rotatable steel cap when there is the production defect in steel cap and slot part contact position department, just so can realize more effectual steel cap defect of avoiding to adapt to not unidimensional insulator with the model, improved the commonality of fixture for the same model different batches of insulator. In the insulator replacement operation, the insulator closed fixture is convenient to disassemble and assemble, convenient to carry and operate at high altitude, and reliable and simple to operate.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of an insulator closed fixture in cooperation with an insulator;
FIG. 2 is a schematic top view of the closed insulator fixture in cooperation with an insulator;
fig. 3 is a schematic view of the overall structure of the insulator closed jig;
FIG. 4 is a schematic view of the structure of the card body;
FIG. 5 is a schematic view of the jaw configuration;
fig. 6 is a partial schematic view of the matching structure of the insulator steel cap and the clamping jaw.
In the figure 1, a card body; 2. a cover is clamped; 21. an open slot; 3. a steel cap; 31. a cap ring; 4. a claw; 41. a groove part; 411. an intermediate tank; 412. an upper abutting portion; 413. a lower abutment portion; 42. a rotating part; 5. a bayonet; 6. rotating the connecting piece; 61. a screw; 62. a hinge portion; 63. a pin shaft; 7. mounting grooves; 71. a locking member.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "length", "width", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "side", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the equipment or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
Example 1
Referring to fig. 1-6, fig. 1 is a schematic view of the overall structure of the insulator closed fixture in cooperation with an insulator; FIG. 2 is a schematic top view of the closed insulator fixture in cooperation with an insulator; fig. 3 is a schematic view of the overall structure of the insulator closed jig; FIG. 4 is a schematic view of the structure of the card body; FIG. 5 is a schematic view of the jaw configuration; fig. 6 is a partial schematic view of the matching structure of the insulator steel cap and the clamping jaw. Fig. 2 shows cross sections of five portions of the insulator closed jig, and structural strength analysis will be performed on the cross sections of the five portions.
The present embodiment provides an insulator closing jig, which, referring to fig. 1, 2 and 3, comprises a body 1, a cap 2 and at least two jaws 4, wherein:
be formed with the bayonet socket 5 that is used for holding insulator steel cap 3 between the card body 1 and the card lid 2, all jack catchs 4 set up on card body 1 and card lid 2 along bayonet socket 5's circumference interval, and all have the slot part 41 with insulator steel cap 3's peripheral looks adaptation on the jack catchs 4, are formed with the block space that is used for restricting insulator steel cap 3 axial displacement and the block space allows insulator steel cap 3 at its inside circumferential direction between all slot parts 41.
The insulator steel cap 3 is limited to move axially in the bayonet 5 through the clamping space formed by the groove part 41 on the clamping jaw 4, and the clamping body and the clamping cover are directly clamped and fastened in the prior art. The above structure of the present embodiment mainly has the following advantages: firstly, the steel cap 3 is clamped through the groove part 41 of the clamping jaw 4, the length of a line of the clamping jaw in contact with the steel cap 3 is reduced, and compared with the prior art that the clamping jaw is in full contact with the periphery of the steel cap, the structure can further avoid the contact of the clamping jaw with defects on the steel cap; secondly, the steel cap 3 can rotate in the clamping space formed by all the groove parts 41 by taking the axis of the steel cap as the axis, even if the defect that the groove parts 41 of the clamping jaws 4 just contact the steel cap 3 during installation can be avoided by rotating the steel cap 3, and therefore the universality of the clamping apparatus is further improved for different batches of the same model.
As an optional implementation manner, with reference to fig. 5 and 6, the groove portion 41 of this embodiment is an arc-shaped groove, the structure of the arc-shaped groove is adapted to the shape of the steel cap 3, in order to enable the steel cap 3 to circumferentially rotate in the clamping space, the arc-shaped groove is used for limiting the steel cap 3 from axially moving by the upper end and the lower end of the steel cap collar 31, and a movable gap exists between the arc-shaped groove and the periphery of the steel cap collar 31.
Instead of the way of limiting the axial movement of the steel cap 3 in this embodiment being to fix the steel cap 3 by abutting the outer periphery of the cap ring 31 of the steel cap (the steel cap is difficult to rotate by the above arrangement), as shown in fig. 5 and 6, the arc-shaped groove in this embodiment includes an upper abutting portion 412, an intermediate groove 411 and a lower abutting portion 413 which are sequentially connected from top to bottom, the upper abutting portion 412 abuts against the upper end face of the cap ring 31 of the steel cap 3, the lower abutting portion 413 abuts against the lower end face of the cap ring 31 of the steel cap 3, and the inner diameter of the intermediate groove 411 is larger than the outer diameter of the cap ring 31 of the steel cap to form a movable gap.
Referring to fig. 6, the upper contact portion 412 of the groove portion 41 is adapted to the shape of the upper end surface of the cap ring 31 of the steel cap 3 and contacts the upper edge of the upper end surface of the cap ring 31, and the lower contact portion 413 is adapted to the shape of the lower end surface of the cap ring 31 of the steel cap 3 and contacts the lower edge of the lower end surface of the cap ring 31, whereby the axial movement of the steel cap 3 is restricted by the above-described structure. A movable gap (as shown in fig. 6) is formed between the middle groove 411 and the outer peripheral wall of the upper hat ring 31 of the steel hat, and the steel hat 3 can rotate circumferentially through the movable gap, so that defects on the steel hat can be avoided conveniently; in addition, the movable gap can be suitable for installing insulator steel caps of the same type and different batches (the outer diameters of the insulator steel caps of the same type and different batches are different but not too much), and particularly, the clamp can be used for installing the insulator steel cap ring 31 of the alternating current 1000kv line 420kN within +/-6 mm.
Therefore, the insulator closing jig in this embodiment improves the versatility of the insulator closing jig mainly by:
1. the clamping jaw 4 arranged in the clamp body 1 and the clamp cover 2 and the clamping space limiting insulator formed by the groove part 41 on the clamping jaw 4 reduce the length of a wire contacted with the steel cap 3; the universality of the fixture on production defects such as bulges or abrasion and the like existing in the production of the steel cap 3 is improved;
2. a movable gap exists between the middle groove 411 of the groove part 41 and the outer peripheral wall of the cap ring 31, and the steel cap 3 can rotate in the clamping space, so that insulators with different sizes of the same type and different batches of steel caps 3 are used, and the universality of the clamp on the size difference of the steel cap 3 in production is improved.
In order to facilitate the installation of the insulator, as an alternative embodiment, referring to fig. 4 and 5, the inner rings of the card body 1 and the card cover 2 of the present embodiment are provided with an installation groove 7, one side of the claw 4 away from the groove portion 41 is provided with a rotating portion 42, and the rotating portion 42 is arranged in the installation groove 7 and can rotate in the installation groove 7.
Above-mentioned jack catch 4 has certain degree of freedom in mounting groove 7 for when the installation of insulator steel cap 3, the rotation of rotating jack catch 4 can play from the effect of centering, promptly, when the installation, the block space that slot part 41 formed on all jack catches 4 of being convenient for sets up with steel cap 3 is concentric, improves the steadiness of fixture block insulator.
In order to further realize that the claw 4 rotates in the mounting groove 7 through the rotating portion 42, as an alternative embodiment, referring to fig. 4 and 5, the mounting groove 7 of this embodiment is a V-shaped groove extending from the bayonet 5 to the periphery of the card body 1 or the card cover 2, the rotating portion 42 is a V-shaped lug adapted to the V-shaped groove, and a locking member 71 for connecting with the upper end and the lower end of the mounting groove 7 vertically penetrates through the rotating portion 42, and the claw 4 can horizontally rotate in the bayonet 5 by taking the locking member 71 as an axis.
Wherein, above-mentioned locking piece 71 can be for selling the axial region, is provided with the perforation on the V type ear and supplies selling the axial region to pass, and the V type ear passes through round pin axle part adaptation and installs in V type inslot back, and jack catch 4 can be the axle center rotation in certain extent for fastener (selling the axial region), when installation insulator steel cap 3, is convenient for through the concentric installation of self-centering effect.
In order to enable rotation by enabling engagement between the mounting groove 7 and the rotating portion 42, as an alternative embodiment, the mounting groove 7 has a groove diameter larger than the outer diameter of the rotating portion 42 so that the pawl 4 can rotate within the bayonet 5 with a degree of freedom in the range of ± 4 ° to ± 10 ° about the locking piece 71 as an axis, as shown in fig. 3.
Preferably, the claw 4 rotates with a degree of freedom of ± 5 ° in the mounting groove 7 by taking the locking member 71 as an axis.
Example 2
The present embodiment is an improvement on the above embodiment 1, and referring to fig. 1, fig. 2, and fig. 3, in the present embodiment, two claws 4 are provided on each of the card body 1 and the card cover 2, and all the claws 4 are uniformly arranged in the bayonet 5.
The clamp body 1 and the clamp cover 2 are respectively provided with a pair of clamping jaws 4, so that the length of a wire in contact with the clamp and the steel cap 3 is reduced on the basis of stably fixing the insulator.
As an optional implementation mode, the card body 1 and the card cover 2 are spliced to form a circular bayonet 5, the card body 1 is detachably connected with one end of the card cover 2, and the card body 1 is hinged with the other end of the card cover 2.
Above-mentioned card body 1 and uncap can dismantle the mode of connection and be convenient for install, dismantle the insulator, and one end is articulated, and during the installation, open the other end and can open above-mentioned bayonet socket 5, pack into insulator steel cap 3.
As an alternative embodiment, referring to fig. 5, in this embodiment, a connection groove is provided at a connection portion of the card body 1 and the card cover 2, a pin 63 is inserted through upper and lower end surfaces of the connection groove, a rotating connection member 6 is connected to the pin 63, and the rotating connection member 6 is used for rotating one end of the card cover 2 around the pin 63.
As an alternative embodiment, the rotating connecting member 6 includes a screw 61 and a hinge portion 62 disposed at one end of the screw 61, a through hole for the pin 63 to pass through is formed in the hinge portion 62, the card cover 2 is connected to the screw 61, and the card cover 2 can rotate around the pin 63 through the hinge portion 62; and an end of the card cover 2 for connection with the card body 1 is provided with an open slot 21 to facilitate opening of the card cover 2 from this end.
Specifically, the both ends that the card lid 2 and the card body 1 are connected all can adopt above-mentioned structure, and the card body 1 and the card lid 2 are articulated split type structure, remain one end usually, and open slot 21 one side is opened in order to block into the insulator, and the insulator is blocked into to the both sides can all be opened to both sides again under the special circumstances, and the card body 1 breaks away from with the card lid 2 is complete promptly.
Next, taking a 420KN insulator closed fixture as an example, the structural strength of the main section is calculated.
For the insulator closed fixture, after the screws at the two ends are stressed, the fixture bears bending moment, and a simplified mechanical model is shown in figure 2: the length of a straight line between the section A-A and the section B-B is 46.8mm, the length of a straight line between the section A-A and the section C-C is 90mm, the length of a straight line between the section A-A and the section D-D is 188.63mm, and the length of a straight line between the section A-A and the section E-E is 265 mm. The fixture has the maximum bending moment at the section E-E, so the section is mainly calculated, and the section A-A, B-B, C-C, D-D assists in checking. (the cross-sectional structure is omitted here)
One is the intensity calculation at the E-E section: the flexural section modulus of the section is calculated as: w95304 mm3；
The bending moment applied to the section is:
M＝(P/2)×265×2.5＝6000×265×2.5＝3975000kg.mm；
the bending stress on the section is then: sigmas＝M/W＝3975000/95304＝41.7kg/mm2＝417MPa；
σs＝417MPa<「σs"in the following. Therefore, the strength of the E-E section is sufficient when the working load of the fixture is 12 tons.
Secondly, calculating the intensity of the D-D section: the bending section modulus of the section is calculated to be W-92437 mm3；
The bending moment applied to the section is:
m (P/2) × 188.63 × 2.5.5 6000 × 170 × 2.5.5 2829450kg.mm, the bending stress on the cross section is σs＝M/W＝2829450/92437＝30.61kg/mm2＝306.1MPa；
σs＝306.1MPa<「σs"in the following. Therefore, the strength of the D-D section is sufficient when the working load of the fixture is 12 tons.
Thirdly, calculating the intensity at the C-C section: the bending section modulus of the section is calculated to be W-58561.3 mm3
The bending moment applied to the section is:
m (P/2) × 90 × 2.5.5 6000 × 90 × 2.5.5 1350000kg mm, the bending stress on the cross section is σs＝M/W＝1350000/58561.3＝23.05kg/mm2＝230.5MPa；
σs＝230.5MPa<「σs"in the following. Therefore, the C-C section strength is sufficient when the working load of the fixture is 15 tons.
And fourthly, calculating the intensity at the B-B section: the bending section modulus of the section is calculated to be W-18555.6 mm3
The bending moment applied to the section is:
m- × 46.8.8 46.8 × 2.5-6000 × 46.8.8-46.8 × 2.5.5-702000 kg. mm, the bending stress on the section is σs＝M/W＝702000/18555.6＝37.83kg/mm2＝378.3MPa；
σs＝378.3MPa<「σs"in the following. Therefore, the strength of the B-B section is enough when the working load of the fixture is 15 tons.
Fifthly, calculating the strength of the A-A section of the lug at the two ends of the fixture. Where the cross-section is dominated by shear calculations.
Shear plane area A (66-20.5) × 20/2 (455 mm)2
The shearing force is P/2-12000/2-6000 kg
So that the shear stress is τScissors＝6000/455＝13.18kg/mm2＝131.8MPa
Taking the safety factor as 2.5, the allowable shear stress of TC4 is:
τlicense plate＝903×0.7/2.5＝252.8MPa>τScissors＝131.8MPa
It can be seen that the tab strength at both ends of the clip is sufficiently safe.
The insulator closed fixture of this embodiment can solve the problem that the insulator size is different with each producer of specification, realizes that a fixture is multi-purpose, just needs one set of fixture just can change with tonnage rank insulator, improves the fixture commonality, promotes the operating efficiency. The fixture can be made of titanium alloy, and the main body is made of titanium alloy, so that the structural strength is guaranteed, and the overall weight is reduced.
The particular features, structures, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. The utility model provides an insulator closed fixture which characterized in that, includes the card body, card lid and two at least jack catchs, wherein:
the card body with be formed with the bayonet socket that is used for holding the insulator steel cap between the card lid, all the jack catch is followed the circumference interval of bayonet socket set up in the card body with on the card lid, just all there is the slot part with the peripheral looks adaptation of insulator steel cap on the jack catch, all be formed with the block space that is used for restricting insulator steel cap axial displacement between the slot part just the block space allows the insulator steel cap at its inside circumferential direction.
2. The insulator closing jig of claim 1, wherein the groove portion is an arc-shaped groove for limiting the axial movement of the steel cap by the upper and lower ends of the steel cap band, and a clearance is provided between the arc-shaped groove and the periphery of the steel cap band.
3. The insulator closing jig of claim 2, wherein the arc-shaped groove comprises an upper abutting portion, a middle groove and a lower abutting portion which are sequentially connected from top to bottom, the upper abutting portion abuts against the upper end face of the steel cap ring, the lower abutting portion abuts against the lower end face of the steel cap ring, and the inner diameter of the middle groove is larger than the outer diameter of the steel cap ring to form the movable gap.
4. An insulator closing jig according to claim 1, wherein the body and the inner ring of the cap are provided with mounting grooves, and the jaws are provided with a rotating portion on a side thereof remote from the groove portion, the rotating portion being disposed in the mounting grooves and capable of rotating therein.
5. The insulator closed clamp according to claim 4, wherein the mounting groove is a V-shaped groove extending from the bayonet to the periphery of the clamp body or the clamp cover, the rotating portion is a V-shaped lug matched with the V-shaped groove, a locking member for connecting with the upper end and the lower end of the mounting groove vertically penetrates through the rotating portion, and the clamping jaw can horizontally rotate in the bayonet by taking the locking member as an axis.
6. An insulator closing jig according to claim 5, wherein the groove diameter of the mounting groove is larger than the outer diameter of the rotating portion so that the claw can rotate in the mounting groove with a degree of freedom in a range of ± 4 ° to ± 10 ° about the locking member.
7. The insulator closing jig of claim 1, wherein two jaws are provided on each of the body and the cover, and all of the jaws are disposed uniformly within the jaws.
8. An insulator closing jig according to claim 1 or 7, wherein the body and the cap are joined to form the circular bayonet, the body is detachably connected to one end of the cap, and the body is hinged to the other end of the cap.
9. An insulator closed type fixture according to claim 8, wherein a connecting groove is formed at a joint of the fixture body and the fixture cover, pin shafts are arranged on upper and lower end surfaces of the connecting groove in a penetrating manner, and a rotating connecting piece is connected to the pin shafts and used for enabling one end of the fixture cover to rotate around the pin shafts.
10. The insulator closing jig according to claim 9, wherein the rotary connecting member comprises a screw and a hinge portion provided at one end of the screw, the hinge portion has a through hole for the pin to pass through, the cap is connected to the screw, and the cap can rotate about the pin through the hinge portion; and one end of the card cover, which is used for being connected with the card body, is provided with an open slot so as to facilitate the opening of the card cover from the end.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010523453.8A CN111641157A (en) | 2020-06-10 | 2020-06-10 | Insulator closed fixture |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010523453.8A CN111641157A (en) | 2020-06-10 | 2020-06-10 | Insulator closed fixture |
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| CN111641157A true CN111641157A (en) | 2020-09-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114221254A (en) * | 2021-11-26 | 2022-03-22 | 国家电网有限公司 | Plus or minus 800kV extra-high voltage direct current line four-way connection board card and calculation |
| CN114221255A (en) * | 2021-11-26 | 2022-03-22 | 国家电网有限公司 | +/-800 kV extra-high voltage direct current line live working squirrel-cage type tubular bus-bar wire-lifting clamp |
| CN115173299A (en) * | 2022-05-16 | 2022-10-11 | 安徽送变电工程有限公司 | On-line system for replacing insulator of power transmission line |
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- 2020-06-10 CN CN202010523453.8A patent/CN111641157A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113782283A (en) * | 2021-08-30 | 2021-12-10 | 中国南方电网有限责任公司超高压输电公司昆明局 | Steel cap assembling and disassembling device and auxiliary assembly thereof |
| CN114221254A (en) * | 2021-11-26 | 2022-03-22 | 国家电网有限公司 | Plus or minus 800kV extra-high voltage direct current line four-way connection board card and calculation |
| CN114221255A (en) * | 2021-11-26 | 2022-03-22 | 国家电网有限公司 | +/-800 kV extra-high voltage direct current line live working squirrel-cage type tubular bus-bar wire-lifting clamp |
| CN115173299A (en) * | 2022-05-16 | 2022-10-11 | 安徽送变电工程有限公司 | On-line system for replacing insulator of power transmission line |
| CN115173299B (en) * | 2022-05-16 | 2023-09-01 | 安徽送变电工程有限公司 | On-line system for replacing insulator of power transmission line |
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