CN112397261B - Universal wheel for supporting insulator and supporting insulator - Google Patents
Universal wheel for supporting insulator and supporting insulator Download PDFInfo
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- CN112397261B CN112397261B CN202011105084.7A CN202011105084A CN112397261B CN 112397261 B CN112397261 B CN 112397261B CN 202011105084 A CN202011105084 A CN 202011105084A CN 112397261 B CN112397261 B CN 112397261B
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- pressure spring
- gland
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- 239000012212 insulator Substances 0.000 title claims abstract description 136
- 210000004907 gland Anatomy 0.000 claims abstract description 71
- 238000003825 pressing Methods 0.000 claims abstract description 11
- 238000005096 rolling process Methods 0.000 claims abstract description 6
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 235000004443 Ricinus communis Nutrition 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 238000003780 insertion Methods 0.000 description 8
- 230000037431 insertion Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 6
- 230000008602 contraction Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000005520 electrodynamics Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/38—Fittings, e.g. caps; Fastenings therefor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/14—Supporting insulators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/14—Supporting insulators
- H01B17/145—Insulators, poles, handles, or the like in electric fences
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- Insulating Bodies (AREA)
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Abstract
The invention relates to a universal wheel of a supporting insulator and the supporting insulator, wherein the universal wheel of the supporting insulator comprises: the sleeve body is used for being fixed on a supporting body of the supporting insulator; the ball seat is assembled inside the sleeve body in a moving mode along the axial direction of the sleeve body; the ball is arranged on the ball seat in a rolling way; the gland is fixed at the orifice at the outer end of the sleeve body; the gland is provided with a ball hole for the ball to extend out of the gland, and the diameter of the orifice at the outer end of the ball hole is smaller than that of the ball so as to prevent the ball from falling off the sleeve body; the pressure spring is arranged between the ball seat and the sleeve body or the pressure spring seat arranged in the sleeve body in a pressing and assembling mode so as to provide elastic supporting force towards the outer end of the sleeve body for the ball seat. When the universal wheel of the supporting insulator is connected to the supporting body and forms the supporting insulator together with the supporting body, the supporting insulator can meet the requirements that when the conducting rod is horizontally arranged, vibration can be absorbed in the radial direction of the conducting rod, and the conducting rod moves in the axial direction.
Description
Technical Field
The invention relates to a universal wheel for supporting an insulator and the supporting insulator.
Background
In the prior art, conducting rods in gas insulated metal enclosed switchgear (GIS) or gas insulated transmission lines (GIL) are supported and positioned in a shell through insulators. When the conducting rod is horizontally arranged, the insulator needs to meet the following requirements: 1) the vibration of the conducting rod can be absorbed in the radial direction of the conducting rod so as to prevent the insulator from being damaged due to collision when the insulator is vibrated; 2) can move axially in the conducting rod to prevent the conducting rod from deforming due to expansion caused by heat and contraction caused by cold.
Disclosure of Invention
The invention aims to provide a universal wheel for supporting an insulator, so that the insulator can meet the requirements of absorbing vibration in the radial direction of a conducting rod and moving in the axial direction of the conducting rod when the conducting rod is horizontally arranged; the invention also aims to provide a supporting insulator which can meet the requirements of absorbing vibration in the radial direction of the conducting rod and moving in the axial direction of the conducting rod when the conducting rod is horizontally arranged.
The universal wheel of the supporting insulator adopts the following technical scheme:
the universal wheel of the support insulator comprises:
the sleeve body is used for being fixed on a supporting body of the supporting insulator;
the ball seat is assembled inside the sleeve body in a moving mode along the axial direction of the sleeve body;
the ball is arranged on the ball seat in a rolling way;
the gland is fixed at the orifice at the outer end of the sleeve body; the gland is provided with a ball hole for a ball to extend out of the gland, and the diameter of the orifice at the outer end of the ball hole is smaller than that of the ball so as to prevent the ball from falling off the sleeve body;
the pressure spring is arranged between the ball seat and the sleeve body or the pressure spring seat arranged in the sleeve body in a pressing and assembling mode so as to provide elastic supporting force towards the outer end of the sleeve body for the ball seat.
The invention has the beneficial effects that: when in use, the universal wheel of the supporting insulator is fixed on the supporting body of the supporting insulator through the sleeve body; when the conducting rod is arranged along the horizontal direction, the ball is pressed between the shell outside the conducting rod and the ball seat by means of the elastic supporting force of the pressure spring, the sleeve body is not contacted with the shell outside the conducting rod, the ball can roll along the shell outside the conducting rod, and when the conducting rod vibrates in the radial direction, the supporting insulator is prevented from being damaged due to collision by absorbing vibration through the expansion and contraction of the pressure spring; when the conducting rod expands with heat and contracts with cold, the ball rolls axially along the shell outside the conducting rod and drives the supporting body of the supporting insulator and the conducting rod to move axially so as to prevent the conducting rod from deforming; in conclusion, when the universal wheel of the supporting insulator is connected to the supporting body and forms the supporting insulator together with the supporting body, the supporting insulator can meet the requirements that when the conducting rod is horizontally arranged, vibration can be absorbed in the radial direction of the conducting rod and the conducting rod moves in the axial direction. In addition, when the length of the shell is too long, for example, the length of the shell exceeds eighteen meters, the conducting rod can be positioned on the supporting insulator, and then the conducting rod and the supporting insulator are pushed into the shell together by means of the universal wheel of the supporting insulator, namely, the supporting insulator is used as a wheel skidding tool.
Preferably, the ball seat comprises a support tile and a ball arranged in the support tile.
Has the beneficial effects that: the ball can reduce the friction between support tile and the ball, when the conducting rod appears expend with heat and contract with cold, makes better removal of support insulator.
Preferably, a surrounding wall for guiding the reciprocating movement of the ball seat is provided inside the pressing cover.
Has the advantages that: the stable reciprocating movement of the ball seat is realized through the guiding of the surrounding wall of the gland to the ball seat.
As a preferred technical scheme, the pressure spring is assembled between the ball seat and a pressure spring seat arranged in the sleeve body in a jacking manner, and external threads are arranged outside the pressure spring seat and are used for being in threaded connection with the sleeve body; the pressure spring seat is provided with a pressure spring seat adjusting structure which is used for being matched with a pressure spring seat adjusting tool to screw the pressure spring seat to realize the axial position adjustment of the pressure spring seat on the support body; the inner end of the sleeve body is provided with an adjusting hole for the pressure spring seat adjusting tool to extend into the sleeve body.
Has the advantages that: therefore, the pressure spring seat can be adjusted according to the weight of the conductive rod, so that the pressure spring seat compresses the pressure spring, and the ball is kept in a state of extending out of the sleeve body.
As a preferred technical scheme, external threads are arranged on the outer part of the gland and are used for being in threaded connection with the sleeve body; the gland is matched with a gland adjusting tool to screw the gland into or out of the sleeve body;
the outer part of the sleeve body is provided with external threads which are used for being in threaded connection with a support body of a supporting insulator to realize the fixation of the sleeve body on the support body; the inner end of the sleeve body is provided with a sleeve body adjusting structure which is used for matching with a sleeve body adjusting tool to screw the sleeve body so that the outer end of the sleeve body is screwed into or out of the mounting hole on the supporting body.
Has the beneficial effects that: when the conducting rod is arranged along the vertical direction, the ball completely enters the sleeve body by rotating the gland, the ball is not contacted with the shell outside the conducting rod at the moment, the outer end of the sleeve body is screwed in or out of the mounting hole on the support body at the position by using the sleeve body adjusting tool, and then the supporting insulator is locked in the axial direction of the conducting rod, so that the axial supporting and radial positioning effects on the conducting rod can be realized, and the supporting insulator has universality.
The supporting insulator adopts the following technical scheme:
a support insulator comprising:
the conductive rod hole is arranged on the support body, and at least three mounting holes are arranged on the support body at intervals along the circumferential direction of the support body for the conductive rod to be inserted;
the universal wheel is arranged in the mounting hole and used for supporting the support body;
the universal wheel includes: the sleeve body is used for being fixed on a supporting body of the supporting insulator;
the ball seat is assembled inside the sleeve body in a moving mode along the axial direction of the sleeve body;
the ball is assembled on the ball seat in a rolling way;
the gland is fixed at the orifice at the outer end of the sleeve body; the gland is provided with a ball hole for the ball to extend out of the gland, and the diameter of the orifice at the outer end of the ball hole is smaller than that of the ball so as to prevent the ball from falling off the sleeve body;
the pressure spring is arranged between the ball seat and the sleeve body or the pressure spring seat arranged in the sleeve body in a pressing and assembling mode so as to provide elastic supporting force towards the outer end of the sleeve body for the ball seat.
The invention has the beneficial effects that: when the conducting rod is arranged along the horizontal direction, the ball is pressed between the shell outside the conducting rod and the ball seat by means of the elastic supporting force of the pressure spring, the sleeve body is not contacted with the shell outside the conducting rod, the ball can roll along the shell outside the conducting rod, and when the conducting rod vibrates in the radial direction, the supporting insulator is prevented from being damaged due to collision by absorbing vibration through the expansion and contraction of the pressure spring; when the conducting rod expands with heat and contracts with cold, the ball rolls axially along the shell outside the conducting rod and drives the supporting body of the supporting insulator and the conducting rod to move axially so as to prevent the conducting rod from deforming; in summary, the supporting insulator can meet the requirements of absorbing vibration in the radial direction of the conducting rod and moving in the axial direction of the conducting rod when the conducting rod is horizontally arranged. In addition, when the length of the shell is too long, for example, the length of the shell exceeds eighteen meters, the conducting rod can be positioned on the supporting insulator, and then the conducting rod and the supporting insulator are pushed into the shell together by means of the universal wheel of the supporting insulator, namely, the supporting insulator is used as a wheel skidding tool.
Preferably, the ball seat comprises a support tile and a ball arranged in the support tile.
Has the advantages that: the ball can reduce the friction between support tile and the ball, when the conducting rod appears expend with heat and contract with cold, makes better removal of support insulator.
Preferably, a surrounding wall for guiding the reciprocating movement of the ball seat is provided inside the pressing cover.
Has the advantages that: the stable reciprocating movement of the ball seat is realized through the guiding of the surrounding wall of the gland to the ball seat.
As a preferred technical scheme, the pressure spring is assembled between the ball seat and a pressure spring seat arranged in the sleeve body in a jacking manner, and external threads are arranged outside the pressure spring seat and are used for being in threaded connection with the sleeve body; the pressure spring seat is provided with a pressure spring seat adjusting structure which is used for being matched with a pressure spring seat adjusting tool to screw the pressure spring seat to realize the axial position adjustment of the pressure spring seat on the support body;
the inner end of the sleeve body is provided with an adjusting hole for the pressure spring seat adjusting tool to extend into the sleeve body.
Has the advantages that: therefore, the pressure spring seat can be adjusted according to the weight of the conductive rod, so that the pressure spring seat compresses the pressure spring, and the ball is kept in a state of extending out of the sleeve body.
As a preferable technical scheme, the positions, corresponding to the universal wheels, on the supporting body are provided with operating hand holes for the pressure spring seat adjusting tool to extend into the sleeve body.
Has the advantages that: the arrangement of the operating hand hole can realize the radial position adjustment of the pressure spring seat on the support body when the support insulator is arranged in the shell.
As a preferred technical scheme, external threads are arranged on the outer part of the gland and are used for being in threaded connection with the sleeve body; the gland is matched with the gland adjusting tool to screw the gland into or out of the sleeve body;
the outer part of the sleeve body is provided with external threads which are used for being in threaded connection with a support body of a supporting insulator to realize the fixation of the sleeve body on the support body; the sleeve body adjusting structure is arranged at the inner end of the sleeve body and is used for being matched with the sleeve body adjusting tool to screw the sleeve body so that the outer end of the sleeve body is screwed in or out of the mounting hole in the supporting body;
and the positions of the support body corresponding to the universal wheels are provided with operating hand holes for the sleeve body adjusting tool to extend into so as to adjust the radial position of the sleeve body on the support body.
Has the advantages that: when the conducting rod is arranged along the vertical direction, the ball completely enters the sleeve body by rotating the gland, the ball is not contacted with the shell outside the conducting rod at the moment, the outer end of the sleeve body is screwed in or out of the mounting hole on the support body at the position by using the sleeve body adjusting tool, and then the supporting insulator is locked in the axial direction of the conducting rod, so that the axial supporting and radial positioning effects on the conducting rod can be realized, and the supporting insulator has universality.
As a preferable technical scheme, three conductive rod holes are uniformly distributed around the axis of the support body at intervals.
Has the beneficial effects that: and the three-phase common box of the conducting rod is realized.
Drawings
Fig. 1 is a perspective view of a universal wheel according to an embodiment 1 of the present invention;
FIG. 2 is a perspective view of FIG. 1 from another perspective;
fig. 3 is a front view of a universal wheel of an embodiment 1 of the supporting insulator of the present invention;
FIG. 4 is a sectional view taken along line A-A of FIG. 3;
figure 5 is a perspective view of an embodiment of the support insulator of the present invention;
figure 6 is a front view of an embodiment of the support insulator of the invention;
FIG. 7 is a sectional view taken along line B-B of FIG. 6;
FIG. 8 is a front view of the support body of FIG. 5;
FIG. 9 is a cross-sectional view taken along line C-C of FIG. 8;
FIG. 10 is a perspective view of the metal ring of FIG. 5;
figure 11 is a perspective view of the support insulator of figure 5 in use;
figure 12 is a front view of the support insulator of figure 5 in use;
fig. 13 is a cross-sectional view taken along line D-D of fig. 12.
In the figure: 1-a ball; 2-pressing the cover; 3-a support tile; 4-a ball bearing; 5, pressing a spring; 6-pressure spring seat; 7-a regulating hole; 8-the sleeve body; 9-a housing; 10-a support; 11-a conductive rod; 13-a metal ring; 14-an insulator; 21-an enclosing wall; 22-flanging; 71-polygonal segments; 72-inserting section; 81-large pore diameter section; 82-small pore diameter section; 83-step surface; 91-flange plate; 100-universal wheels; 101-a threaded hole; 102-handle hole; 103-conductive rod hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration only, not by way of limitation, i.e., the embodiments described are intended as a selection of the best mode contemplated for carrying out the invention, not as a full mode. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The features and properties of the present invention are described in further detail below with reference to examples.
as shown in fig. 1 to 4, the universal wheel for supporting an insulator includes a sleeve body 8, in this embodiment, an inner hole of the sleeve body 8 is a stepped hole having a large-diameter section 81 and a small-diameter section 82, and an outer diameter of the large-diameter section 81 is larger than an outer diameter of the small-diameter section 82. As shown in fig. 5 to 7, with the end of the sheath 8 for connecting with the support 10 of the supporting insulator as the inner end and the end of the shell near the outside of the conducting rod as the outer end, the large-diameter section 81 is disposed near the outer end of the sheath 8, and the small-diameter section 82 is disposed near the inner end of the sheath 8. The outer circumference of the large diameter section 81 is provided with a first external thread (not shown) for connection with the housing outside the conductor bar, and the outer circumference of the small diameter section 82 is provided with a second external thread for threaded connection with the support body 10 of the support insulator in fig. 5.
As shown in fig. 4, the universal wheel for supporting the insulator further includes a circular arc-shaped supporting shoe 3, the supporting shoe 3 is assembled inside the sleeve body 8 along the axial direction of the sleeve body 8, a plurality of balls 4 (only one ball is shown in fig. 4) are arranged in the supporting shoe 3 along the circumferential direction thereof, the supporting shoe 3 is assembled with the ball 1 through the rolling of the ball 4, and the friction between the ball 1 and the supporting shoe 3 can be reduced through the ball 4. The support shoe 3 forms together with the balls 4 a ball seat in this embodiment. In order to prevent the balls 4 from being separated from the supporting tile 3, two circumferential ends of the supporting tile 3 are respectively provided with flanges 22 facing the axis of the sleeve body 8, and the width of each flange 22 is smaller than the diameter of each ball 4, so that the flanges 22 can limit the balls 4 and cannot rub against the balls 1.
As shown in fig. 1 and 4, the universal wheel of the supporting insulator further includes a gland 2, the gland 2 in this embodiment is screwed to the outer end opening of the sleeve body 8, the gland 2 is provided with a ball hole, the ball 1 is exposed outside the gland 2, and the diameter of an opening formed at the outer end surface of the gland 2 by the ball hole is smaller than that of the ball 1, so as to prevent the ball 1 from falling off the sleeve body 8.
The outer end face of the gland 2 is also provided with a gland adjusting structure, the gland adjusting structure in the embodiment is two connecting holes (not shown in the figure) arranged along the radial direction of the gland 2 at intervals, when the gland adjusting tool is used, the gland adjusting tool is inserted into the two connecting holes, and meanwhile, force along the circumferential direction of the sleeve body 8 is applied to the two connecting holes so as to rotate the gland 2, so that the position adjustment of the gland 2 in the axial direction of the sleeve body 8 is realized. The gland adjusting tool in the embodiment can be composed of two rod bodies, when the gland adjusting tool is used, the two rod bodies are respectively inserted into the connecting holes, in order to prevent the rod bodies from rotating in the connecting holes, the connecting holes can be set to be polygonal holes, and meanwhile, polygonal structures matched with the polygonal holes are arranged on the rod bodies.
As shown in fig. 4, the pressure spring seat 6 is assembled in the sleeve body 8, specifically, an external thread is arranged outside the pressure spring seat 6, the pressure spring seat 6 is connected inside the sleeve body 8 through a thread, the pressure spring seat 6 and the supporting tile 3 are pressed and assembled with the pressure spring 5, and the supporting tile 3 is provided with an elastic supporting force towards the outer end of the sleeve body 8 through the pressure spring 5. The small-bore section 82 of the sleeve body 8 can guide the pressure spring 5.
As shown in fig. 4, the inner side of the gland 2 is provided with a surrounding wall 21 for guiding the reciprocating movement of the ball seat, and the surrounding wall 21 is used for being in limited fit with the support tile 3 along the radial direction of the sleeve body 8 so as to guide the reciprocating movement of the ball seat.
As shown in fig. 2 and 4, in the present embodiment, the inner end of the sheath body 8 is provided with an adjusting hole 7 communicated with the inner hole, the adjusting hole 7 includes a polygonal hole section 71 with a polygonal cross section and an insertion section 72, the polygonal hole section 71 is disposed away from the outer end of the sheath body 8, and the insertion section 72 is disposed close to the outer end of the sheath body 8. The polygonal hole section 71 in this embodiment is a regular hexagonal hole section, and is adapted to the sleeve body adjusting tool, so that the sleeve body 8 is screwed by the sleeve body adjusting tool to adjust the position of the sleeve body 8 in the radial direction of the support body 10 shown in fig. 5, and the polygonal section constitutes the sleeve body adjusting structure. Specifically, the sleeve body adjusting tool can be an outer hexagonal wrench and other adjusting rods with outer hexagonal structures.
One end of the pressure spring seat 6, which is far away from the gland 2, is provided with a pressure spring seat adjusting structure for matching with a pressure spring seat adjusting tool to realize the axial position adjustment of the pressure spring seat 6 on the sleeve body 8. Specifically, the pressure spring seat adjusting structure is a hexagonal hole (not shown in the figure) formed in the inner end face of the pressure spring seat, and the pressure spring seat adjusting tool is an external hexagonal wrench matched with the hexagonal hole. The polygonal hole section 71 and the insertion section 72 in fig. 4 form an adjusting hole for the external hexagonal wrench to extend into the sleeve body 8.
The insertion section 72 is a circular hole section, and the diameter of the insertion section 72 is smaller than the diameter of the small-hole section 82 of the sleeve body 8, so that the part of the sleeve body 8 provided with the insertion section 72 can stop the pressure spring seat 6, and the pressure spring 5 is prevented from ejecting the pressure spring seat 6 out of the sleeve body 8 along the direction towards the inner part of the sleeve body 8 under unexpected conditions.
In addition, when the weight of the conducting rod changes or the inner diameter of the shell changes, the length of the ball 1 extending out of the outer end face of the sleeve body 8 needs to be adjusted, at this time, the pressure spring seat 6 can be screwed into the bottom of the small-bore section of the sleeve body 8 to enable the pressure spring 5 to be in a loose state, and then the position of the gland 2 is adjusted to enable the ball 1 to be in a proper working state. When the position of the gland 2 is adjusted, the pressure spring 5 is in a loose state by adjusting the pressure spring seat 6, which is beneficial to adjusting the position of the gland 2.
The specific assembling process of the universal wheel of the supporting insulator comprises the following steps:
during installation, the pressure spring seat 6 is screwed into the sleeve body 8, then the pressure spring 5, the support tile 3, the ball 4 and the ball 1 are sequentially arranged, finally the gland 2 is screwed on the sleeve body 8, and at the moment, the primary installation of the universal wheel of the support insulator is finished; then, the universal wheel of the installed support insulator is installed into the support body 10 of fig. 5 to form the support insulator shown in fig. 5 to 7, the support insulator is provided with a conductive rod hole 103 for the conductive rod to pass through, and the support insulator is further provided with an operating hand hole 102 for placing a sleeve body adjusting tool and a pressure spring seat adjusting tool to adjust the sleeve body 8 and the pressure spring seat 6. When the support insulator is used specifically, the support insulator is enabled to have the following two working states by adopting different adjusting modes:
working state 1: this state is used when the conductive rod is horizontally installed. As shown in fig. 11 to 13, the bus bar includes a housing 9, flanges 91 are provided at both axial ends of the housing 9, and a conductive rod 11 and a support insulator are provided in the housing 9.
At this time, the outer end face of the gland 2 is flush with the outer end face of the sleeve body 8, the ball 1 is in a rotatable and flexible state, and the pressure spring seat 6 is adjusted by using a pressure spring seat adjusting tool according to the weight of the conductive rod 11, so that the pressure spring 5 is pressed on the support tile 3. After the compression spring 5 is compressed to a certain degree, the outer end face of the support tile 3 is tightly buckled into the surrounding wall 21 of the gland 2, the ball 1 is pressed between the gland 2 and the support tile 3 by the pressure of the compression spring 5, but the ball 1 cannot be locked and can still rotate; the support insulator has two effects at this time: firstly, when the universal wheel of the supporting insulator receives an electrodynamic force from the radial direction of the conductive rod 11, the pressure spring 5 can effectively absorb the electrodynamic force along the radial direction of the conductive rod 11, so that the supporting insulator is prevented from being damaged by oscillation; secondly, when conducting rod 11 appears expend with heat and contract with cold, the universal wheel of support insulator takes place to roll to drive support insulator and conducting rod 11 inside along axial displacement in casing 9, prevent that conducting rod 11 from appearing warping because expend with heat and contract with cold.
And 2, working state: this state is used when the conducting rod is vertically installed. The bus bar at this time is different from the bus bar in fig. 11 in that: a fixed block is welded outside the shell 9, and meanwhile, a blind hole (not shown in the figure) which penetrates through the shell and extends into the fixed block is formed in the shell, wherein the blind hole is an internal thread hole in the embodiment; when the supporting insulator is used, the first external thread of the sleeve body 8 is in threaded connection with the blind hole, the stable connection between the supporting insulator and the shell body 9 is guaranteed, and the conducting rod 11 is inserted into the conducting rod hole 103 of the supporting insulator along the vertical direction.
Before the supporting insulator is arranged in the shell 9, a pressure spring seat adjusting tool is used for adjusting a pressure spring seat 6, so that a pressure spring 5 starts to be loosened; then the gland 2 is rotated, the gland 2 presses the ball 1, the ball 1 drives the ball 4 and the supporting tile 3 to retract into the inner hole of the sleeve body 8, when the supporting tile 3 contacts a step surface 83 between a large-hole-diameter section 81 and a lower-hole-diameter section of the sleeve body 8, the supporting tile cannot be screwed inwards continuously, the outer end surface of the gland 2 is positioned on the inner side of the outer end surface of the sleeve body 8, at the moment, most of the ball 1 enters the large-hole-diameter section 81 of the sleeve body 8, and a small part of the ball 1 extends out of the sleeve body 1; the sleeve body 8 is adjusted by using the sleeve body adjusting tool, so that the universal wheel of the supporting insulator starts to be screwed out of the supporting body 10, the sleeve body 8 is screwed into the blind hole of the shell 9 outside the conducting rod and is in threaded connection with the blind hole and locked on the shell 9, and at the moment, the supporting insulator is in a locked state and can be used for radially positioning the conducting rod 11.
In addition, a contact finger groove is arranged in the conductive rod hole 103, a spring contact finger is assembled in the contact finger groove, the spring contact finger radially presses the conductive rod 11 along the support insulator, and friction force is generated between the spring contact finger and the conductive rod 11 and axially positions the conductive rod 11. In the prior art, a fixed insulator is usually arranged at the end part of a guide rod, and the guide rod is axially positioned through the fixed insulator, but the support insulator disclosed by the invention can realize the axial positioning of the guide rod through a spring contact finger arranged in the support insulator, so that the fixed insulator arranged at the end part of the guide rod can be omitted, and the cost of a bus in gas insulation equipment is further saved.
It should be noted that, when the supporting insulator is in the working state 2, the step surface 83 between the large-aperture section 81 and the lower-aperture section of the sleeve body 8 and the gland 2 limit the ball 1 and the supporting shoe 3 together, so that the ball 1 is stably kept in a state where most of the ball is retracted into the sleeve body 8.
In summary, when the universal wheel of the supporting insulator is connected to the supporting body 10 to form the supporting insulator together with the supporting body 10, the supporting insulator can meet the requirements that the conducting rod 11 is vertically arranged and is vertically locked on the shell 9, and when the conducting rod 11 is horizontally arranged, the conducting rod 11 can absorb vibration in the radial direction and move in the axial direction of the conducting rod 11, and the supporting insulator has universality.
When the pressure spring seat 6 and the sleeve body 8 need to be adjusted, the operation hand hole 102 is used as an operation window, and the operation hand hole 102 can also be used as a clamping part for clamping hands or tools when the supporting insulator is carried; the bus can be a GIS bus and also can be a GIL power transmission line.
it differs from the above embodiment 1 mainly in that: in the embodiment 1, the balls are arranged between the supporting tiles to reduce the friction between the balls and the supporting tiles. In the embodiment, the ball bearing is not arranged between the support tile and the ball, and the surface of the support tile, which is used for being matched with the ball, meets a certain roughness requirement so that the ball can roll along the support tile when the conducting rod is horizontally arranged; the two circumferential ends of the supporting tile can be also not provided with flanges, the side face, close to the ball, of the supporting tile is provided with a groove matched with each ball, and the ball is limited by the groove wall of the groove.
it differs from the above embodiment 1 mainly in that: in the embodiment 1, the pressing cover is provided with the surrounding wall, and the two circumferential ends of the pressing cover are pressed against the surrounding wall. In the embodiment, the pressure cover is not provided with the surrounding wall, and the two circumferential ends of the support tile are directly pressed on the inner end surface of the pressure cover; the supporting tile can also be formed by a supporting cylinder with a rectangular cross section, and the ball seat is supported and limited by four cylinder side walls and a cylinder bottom wall of the supporting cylinder.
it differs from the above embodiment 1 mainly in that: in the embodiment 1, the axial position of the compression spring seat along the sleeve body is adjustable, so that the support insulator can be suitable for guide rods with different weights. In the embodiment, the same supporting insulator can only be suitable for supporting the conducting rods within the same weight range, the elastic supporting force of the pressure spring is determined at the moment, the position of the pressure spring seat does not need to be adjusted along the axial direction of the sleeve body, external threads do not need to be arranged outside the pressure spring seat, the pressure spring seat and the sleeve body are directly fixed by welding or riveting, and at the moment, a pressure spring seat adjusting structure does not need to be arranged on the pressure spring seat; under the condition that the elastic supporting force of the pressure spring is determined and adjustment is not needed, the pressure spring can also be directly assembled between the hole bottom of the inner hole of the sleeve body and the ball seat in a jacking way without arranging a pressure spring seat.
it differs from the above embodiment 1 mainly in that: the support insulator in embodiment 1 described above can be used to support both horizontally arranged guide rods and vertically arranged conductive rods. In this embodiment, the supporting insulator is only used for supporting the conductive rods arranged horizontally, and is not suitable for positioning the conductive rods arranged vertically, at this time, the axial position of the gland relative to the sleeve body and the radial position of the sleeve body relative to the support body do not need to be adjusted, so that the external thread may not be arranged outside the gland, the first external thread and the second external thread may not be arranged on the sleeve body, the gland and the sleeve body are directly fixed by welding or riveting, and the sleeve body and the support body are fixed by welding or bonding; the sleeve body does not need to be provided with a sleeve body adjusting structure, and the gland does not need to be provided with a gland adjusting structure.
it differs from the above embodiment 1 mainly in that: the inner hole of the sleeve body in the embodiment 1 is a stepped hole. In this embodiment, the hole of the cover body is a through hole with a uniform axial aperture along the cover body, and at this time, the ball and the ball seat are limited by the protruding block and the gland when the supporting insulator is in the working state 2 by arranging the protruding block facing the axis of the cover body in the hole.
it differs from the above embodiment 1 mainly in that: in the above embodiment 1, the adjusting holes include polygonal hole sections and insertion sections, and the hole diameters of the polygonal hole sections and the insertion sections are different. In the embodiment, the adjusting holes are through holes with consistent axial apertures along the sleeve body, and the through holes are polygonal holes and are used for being connected with the sleeve body adjusting tool; of course, an outer hexagonal structure may be disposed at an end of the sleeve body away from the gland for connecting with the sleeve body adjusting tool, and the outer hexagonal structure constitutes the sleeve body adjusting structure.
it differs from the above embodiment 1 mainly in that: in the embodiment 1, the blind hole is an internal threaded hole, and in this embodiment, the blind hole is an unthreaded hole, and at this time, the outer peripheral surface of the large-aperture section is an unthreaded surface adapted to the unthreaded hole, and the first external thread does not need to be provided.
The specific embodiment of the supporting insulator of the invention:
as shown in fig. 5 to 7, the supporting insulator includes a supporting body 10, and three mounting holes are provided on the supporting body 10 at intervals along a circumferential direction thereof; the support 10 in this embodiment includes an insulator 14 shown in fig. 8 and 9, and a metal ring 13 shown in fig. 10 fitted around the outer periphery of the insulator 14, and the metal ring 13 is specifically an aluminum ring. The insulator 14 is provided with a conductive rod hole 103 for inserting the conductive rod 11 and an operating hand hole 102, the metal ring 13 is provided with a threaded hole 101, the second external thread of the sleeve body 8 is connected to the threaded hole 101, the threaded hole 101 forms a mounting hole of the support body 10, and the threaded hole 101 is communicated with the operating hand hole 102 when the metal ring 13 is embedded on the insulator 14.
The insulator 14 is made by casting epoxy resin, when the support 10 is made, the epoxy resin is cast in the metal ring 13, the insulator 14 is formed after the epoxy resin is solidified, and the metal ring 13 is embedded and fixed in the insulator 14.
The support insulator further comprises three universal wheels 100 shown in fig. 1 to 4, and the three universal wheels 100 are correspondingly mounted in the three mounting holes of the support body 10. The universal wheel 100 in this embodiment has the same structure as the universal wheel 100 for supporting an insulator described in embodiment 1 of the universal wheel 100 for supporting an insulator, and details thereof are not repeated.
As shown in fig. 11 to 13, three conductive rod holes 103 are uniformly distributed along the outer circumference of the axis of the support 10 for inserting three-phase conductive rods; three threaded holes 101 are uniformly distributed along the periphery of the axis of the support body 10 at intervals, and the universal wheels 100 are connected to the threaded holes 101.
In other embodiments, the universal wheel may be the universal wheel supporting the insulator in any one of embodiments 2 to 8; only one conductive rod hole on the support body can be arranged, and at the moment, three phases of the bus are respectively arranged in three different shells to form a three-phase box bus; the threaded holes on the supporting body can also be arranged at intervals of more than four along the circumferential direction of the supporting body.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.
Claims (10)
1. Support insulator's universal wheel, characterized by includes:
the sleeve body is used for being fixed on a supporting body of the supporting insulator;
the ball seat is assembled inside the sleeve body in a moving mode along the axial direction of the sleeve body;
the ball is arranged on the ball seat in a rolling way;
the gland is fixed at the orifice at the outer end of the sleeve body; the gland is provided with a ball hole for a ball to extend out of the gland, and the diameter of the orifice at the outer end of the ball hole is smaller than that of the ball so as to prevent the ball from falling off the sleeve body;
the pressure spring is arranged between the ball seat and the sleeve body or a pressure spring seat arranged in the sleeve body in a pressing and assembling mode so as to provide elastic supporting force towards the outer end of the sleeve body for the ball seat;
the outer part of the gland is provided with external threads which are used for being in threaded connection with the sleeve body; the gland is matched with the gland adjusting tool to screw the gland into or out of the sleeve body;
the outer part of the sleeve body is provided with external threads which are used for being in threaded connection with a support body of a supporting insulator to realize the fixation of the sleeve body on the support body; the inner end of the sleeve body is provided with a sleeve body adjusting structure which is used for matching with a sleeve body adjusting tool to screw the sleeve body so that the outer end of the sleeve body is screwed into or out of the mounting hole on the supporting body.
2. The universal wheel supporting an insulator as claimed in claim 1, wherein the ball seat includes a support tile and a ball disposed within the support tile.
3. A castor for supporting an insulator according to claim 1 or 2, wherein an enclosing wall for guiding the reciprocal movement of the ball seat is provided on an inner side of the cap.
4. The universal wheel for supporting the insulator as claimed in claim 1 or 2, wherein the compression spring is press-fitted between the ball seat and a compression spring seat provided in the sleeve body, and an external thread is provided on an outer portion of the compression spring seat for threaded connection with the sleeve body; the pressure spring seat is provided with a pressure spring seat adjusting structure which is used for being matched with a pressure spring seat adjusting tool to screw the pressure spring seat to realize the axial position adjustment of the pressure spring seat on the support body;
the inner end of the sleeve body is provided with an adjusting hole for the pressure spring seat adjusting tool to extend into the sleeve body.
5. Support insulator, characterized by includes:
the supporting body is provided with a conductive rod hole for inserting a conductive rod; at least three mounting holes are arranged on the support body at intervals along the circumferential direction of the support body;
the universal wheel is arranged in the mounting hole and used for supporting the support body;
the universal wheel includes: the sleeve body is used for being fixed on a supporting body of the supporting insulator;
the ball seat is assembled inside the sleeve body in a moving mode along the axial direction of the sleeve body;
the ball is arranged on the ball seat in a rolling way;
the gland is fixed at the orifice at the outer end of the sleeve body; the gland is provided with a ball hole for the ball to extend out of the gland, and the diameter of the orifice at the outer end of the ball hole is smaller than that of the ball so as to prevent the ball from falling off the sleeve body;
the pressure spring is arranged between the ball seat and the sleeve body or a pressure spring seat arranged in the sleeve body in a pressing and assembling mode so as to provide elastic supporting force towards the outer end of the sleeve body for the ball seat;
the outer part of the gland is provided with external threads which are used for being in threaded connection with the sleeve body; the gland is matched with the gland adjusting tool to screw the gland into or out of the sleeve body;
the outer part of the sleeve body is provided with external threads which are used for being in threaded connection with a support body of a supporting insulator to realize the fixation of the sleeve body on the support body; the sleeve body adjusting structure is arranged at the inner end of the sleeve body and is used for being matched with the sleeve body adjusting tool to screw the sleeve body so that the outer end of the sleeve body is screwed into or out of the mounting hole on the supporting body;
and the positions of the support body corresponding to the universal wheels are provided with operating hand holes for the sleeve body adjusting tool to extend into so as to adjust the radial position of the sleeve body on the support body.
6. A support insulator according to claim 5, wherein the ball socket comprises a support tile and a ball disposed within the support tile.
7. A supporting insulator according to claim 5 or 6, characterised in that the inside of the gland is provided with a surrounding wall which guides the reciprocal movement of the ball seat.
8. The supporting insulator as claimed in claim 5 or 6, wherein the compression spring is press-fitted between the ball seat and a compression spring seat provided in the bushing body, and an external thread is provided on an outer portion of the compression spring seat for threaded connection with the bushing body; the pressure spring seat is provided with a pressure spring seat adjusting structure and is used for being matched with a pressure spring seat adjusting tool to screw the pressure spring seat to realize the axial position adjustment of the pressure spring seat on the support body;
the inner end of the sleeve body is provided with an adjusting hole for the pressure spring seat adjusting tool to extend into the sleeve body.
9. The supporting insulator as claimed in claim 8, wherein the supporting body is provided with an operating hand hole at a position corresponding to the universal wheel for allowing the pressure spring seat adjusting tool to extend into the sleeve body.
10. A supporting insulator according to claim 5 or 6, characterised in that three of the conducting rod apertures are provided at intervals around the axis of the supporting body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011105084.7A CN112397261B (en) | 2020-10-15 | 2020-10-15 | Universal wheel for supporting insulator and supporting insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011105084.7A CN112397261B (en) | 2020-10-15 | 2020-10-15 | Universal wheel for supporting insulator and supporting insulator |
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| CN112397261A CN112397261A (en) | 2021-02-23 |
| CN112397261B true CN112397261B (en) | 2022-07-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011105084.7A Active CN112397261B (en) | 2020-10-15 | 2020-10-15 | Universal wheel for supporting insulator and supporting insulator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114252189A (en) * | 2021-10-26 | 2022-03-29 | 平高集团威海高压电器有限公司 | Wire clamp grip strength detection system |
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| CN203632160U (en) * | 2013-10-09 | 2014-06-04 | 中国西电电气股份有限公司 | Gas insulation metal-enclosed bus |
| CN205384910U (en) * | 2015-12-21 | 2016-07-13 | 平高集团有限公司 | Three pillar insulators are used to gas -insulated generating line |
| CN109686513A (en) * | 2018-12-27 | 2019-04-26 | 河南平高电气股份有限公司 | A kind of GIL and its post insulator sub-component |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB909338A (en) * | 1959-11-19 | 1962-10-31 | British Indulated Callender S | An arrangement for supporting overhead electric conductors and cables |
| GB1266501A (en) * | 1968-04-05 | 1972-03-08 | ||
| CN201975178U (en) * | 2010-12-15 | 2011-09-14 | 中国西电电气股份有限公司 | Pipeline bus insulator structure with three struts |
| CN203632160U (en) * | 2013-10-09 | 2014-06-04 | 中国西电电气股份有限公司 | Gas insulation metal-enclosed bus |
| CN205384910U (en) * | 2015-12-21 | 2016-07-13 | 平高集团有限公司 | Three pillar insulators are used to gas -insulated generating line |
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| CN112397261A (en) | 2021-02-23 |
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