CN103383884B - Insulator - Google Patents
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- CN103383884B CN103383884B CN201210134900.6A CN201210134900A CN103383884B CN 103383884 B CN103383884 B CN 103383884B CN 201210134900 A CN201210134900 A CN 201210134900A CN 103383884 B CN103383884 B CN 103383884B
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Abstract
The present invention discloses a kind of insulator, comprising: silicon rubber cluster parachute, and described silicon rubber cluster parachute has cylindrical body, is formed along its axially extended inner chamber in described cylindrical body; Be arranged in gold utensil and the epoxy fibreglass rod of the inner chamber of described silicon rubber cluster parachute, described gold utensil and epoxy fibreglass rod fit together mutually, and are formed along described axially extended first accepting hole in described gold utensil; Be contained in the spring in the first accepting hole of described gold utensil; With the compression set along spring described in described axial compression.Compared with prior art, the present invention adopts and the spring mechanism of axial compression can realize the axially large spring function of insulator, gold utensil and high-strength epoxy glass fiber rod is inlaid in the main body of silicon rubber cluster parachute simultaneously, thus improves the radial rigidity of insulator.
Description
Technical field
The present invention relates to a kind of insulator, particularly relating to a kind of insulator for supporting the transmission line such as subway or high ferro in suspension.
Background technology
Existing insulator is divided into porcelain insulator and silicon rubber elastic insulator.Porcelain insulator is traditional handicraft, and cement waters dress gold utensil.This porcelain insulator has enough hot strengths and radial rigidity, but cannot bear the environment for use of long-term vibration.Glass-the epoxy material of silicon rubber elastic insulator high strength, such as, stick on stainless steel bar with high strength epoxy resin, be matched with between surface of insulating layer and transmission line clamp with natural rubber and nano imvite and relevant adhesion promoter and make vulcanised elastomeric layer.The elasticity of this silicon rubber elastic insulator is better, but only adopts rubber as the connector bearing long-term vibration and mechanism, and its long-term reliability is poor.
These traditional porcelain insulators and silicon rubber elastic insulator are not all suitable for the environment for use such as subway or high ferro, because there are violent and long-term vibrations in subway and high ferro.
Subway or high ferro application in, transmission line is supported on tunnel body of wall or support bar by insulator in suspension, the locomotive of subway or high ferro by pantograph and transmission line electrical contact slidably, to power to the electric locomotive of subway or high ferro.But, due to the reason of the track of subway or high ferro, such as track seam or track are unequal, electric locomotive can be caused in the process of running at high speed to there is strong vertical tremor, this just requires that insulator automatically can adapt to the vertical tremor of electric locomotive on above-below direction (axial direction of insulator), and transmission line is remained and pantograph electrical contact.In addition, also there is double swerve frequently in electric locomotive in the process of running at high speed, and this just requires that insulator has enough mechanical strengths on left and right directions (radial direction of insulator), can not deform and damage.
Therefore, the insulator of subway or high ferro must have enough axial elasticities, must have enough radial rigidities again, and existing porcelain insulator and silicon rubber elastic insulator all cannot realize this function simultaneously.
Summary of the invention
For the aforementioned technical problem existed in prior art, the present invention is intended to provide a kind of insulator, and it not only has enough axial elasticities and has again enough radial rigidities simultaneously.
According to an aspect of the present invention, provide a kind of insulator, comprising: silicon rubber cluster parachute, described silicon rubber cluster parachute has cylindrical body, is formed along its axially extended inner chamber in described cylindrical body; Be arranged in gold utensil and the epoxy fibreglass rod of the inner chamber of described silicon rubber cluster parachute, described gold utensil and epoxy fibreglass rod fit together mutually, and are formed along described axially extended first accepting hole in described gold utensil; Be contained in the spring in the first accepting hole of described gold utensil; With the compression set along spring described in described axial compression.
According to a preferred embodiment of the present invention, described gold utensil is formed along described axially extended first threaded mounting hole, and be formed along described axially extended second threaded mounting hole on described epoxy fibreglass rod, this second threaded mounting hole and described first threaded mounting hole on described gold utensil described axially relative and in installment state time form a complete threaded mounting hole; Described gold utensil and described epoxy fibreglass rod are fitted together mutually by the screw rod being screwed into described threaded mounting hole.
According to a further advantageous embodiment of the invention, described screw rod axially extends along described, one end of described screw rod is passed described gold utensil via described first threaded mounting hole and is threaded with the second threaded mounting hole of described epoxy fibreglass rod, and the other end passes described compression set and is threaded with at least two adjusting nuts.
According to a further advantageous embodiment of the invention, described compression set comprises the first pressing plate be directly pressed against on described spring.
According to a further advantageous embodiment of the invention, described compression set comprise the first pressing plate and with the rigidly connected rigidity briquetting of described first pressing plate, described rigidity briquetting to be assemblied in the first accepting hole of described gold utensil and to be pressed against on described spring.
According to a further advantageous embodiment of the invention, described gold utensil is also formed along described axially extended, with separated second accepting hole of described first accepting hole; Described insulator also comprises and the rigidly connected rigidity briquetting of described first pressing plate, and described rigidity briquetting is assemblied in the second accepting hole of described gold utensil; And described first pressing plate is directly pressed against on described spring.
According to a further advantageous embodiment of the invention, during installation, described insulator is fixed on the fixed head on mounting bracket in suspension, and described fixed head is pressed against on described first pressing plate, and the other end of described screw rod is through described fixed head.
According to a further advantageous embodiment of the invention, described insulator also comprises: resilient rubbber cushion, and described resilient rubbber cushion is pressed against on described fixed head; With the second pressing plate, described second pressing plate is pressed against on described resilient rubbber cushion, and the other end of described screw rod is through described resilient rubbber cushion and described second pressing plate.
According to a further advantageous embodiment of the invention, described first accepting hole in described gold utensil is the looping pit towards outward opening.
According to a further advantageous embodiment of the invention, described threaded mounting hole is the screwed hole of centre of keeping apart with described first accepting hole.
According to a further advantageous embodiment of the invention, described first accepting hole in described gold utensil is the central cylindrical hole towards outward opening be communicated with described threaded mounting hole.
According to a further advantageous embodiment of the invention, described screw rod through the first accepting hole of the central cylindrical of described gold utensil, and coordinates with the rigidity briquetting be contained in the first accepting hole and spring slide.
According to a further advantageous embodiment of the invention, described insulator also comprises: flange, and described Flange joint is at the bottom end of the insulator relative with described insulator top first pressing plate of described silicon rubber cluster parachute, and described flange is suitable for use in suspension transmission line.
According to a further advantageous embodiment of the invention, described transmission line is the transmission line of subway or high ferro, and being formed between the pantograph of described transmission line and subway or high ferro locomotive can the electrical connection of relative sliding.
According to a further advantageous embodiment of the invention, described screw rod is threaded with described first pressing plate and fixed head.
According to a further advantageous embodiment of the invention, described screw rod is threaded with described first pressing plate, fixed head and the second pressing plate.
According to a further advantageous embodiment of the invention, described spring is helical spring or butterfly spring.
According to a further advantageous embodiment of the invention, described second accepting hole is the looping pit towards outward opening.
According to a further advantageous embodiment of the invention, described compression set comprises: the first pressing plate; The the first rigidity briquetting be connected with described first pressing plate, described first rigidity briquetting is assemblied in the first accepting hole of described gold utensil slidably; Be contained in the second rigidity briquetting in described first accepting hole and relative with described first rigidity briquetting, described spring is compressed between described first and second rigidity briquettings.
According to a further advantageous embodiment of the invention, described gold utensil is formed along described axially extended first threaded mounting hole, and be formed along described axially extended second threaded mounting hole on described epoxy fibreglass rod, this second threaded mounting hole and described first threaded mounting hole on described gold utensil described axially relative and in installment state time form a complete threaded mounting hole; Described gold utensil and described epoxy fibreglass rod are fitted together mutually by the first screw rod being screwed into described threaded mounting hole.
According to a further advantageous embodiment of the invention, be formed with the axial hole coordinated with the second rigidity briquetting in described first rigidity briquetting, described second rigidity briquetting is slidably received in the axial hole of described first rigidity briquetting.
According to a further advantageous embodiment of the invention, described first screw rod is formed on the bottom of described second rigidity briquetting.
According to a further advantageous embodiment of the invention, the upper end of described epoxy fibreglass rod is formed with the assembling recess coordinated with described gold utensil, and described gold utensil is inlaid in the assembling recess of described epoxy fibreglass rod.
According to a further advantageous embodiment of the invention, described insulator also comprises at least two radial pins, and described radial pin extends along the radial direction of described silicon rubber cluster parachute and is fixed on described gold utensil and described epoxy fibreglass rod.
According to a further advantageous embodiment of the invention, the upper end of described epoxy fibreglass rod roughly evenly coordinates with the lower end of described gold utensil.
According to a further advantageous embodiment of the invention, described insulator also comprises at least two radial pins, and described radial pin extends along the radial direction of described silicon rubber cluster parachute and is fixed on described gold utensil.
According to a further advantageous embodiment of the invention, radial hole is formed in described first rigidity briquetting, the inner of described radial pin extends in the radial hole of described first rigidity briquetting, and the diameter of the radial hole of described first rigidity briquetting is greater than described radial pin, described first rigidity briquetting can be moved along described axis relative to described radial pin in preset distance, thus the decrement of described spring is limited in preset distance.
According to a further advantageous embodiment of the invention, the upper end of described first rigidity briquetting is formed with the second screw rod, and described first rigidity briquetting is threaded with described first pressing plate by described second screw rod.
According to a further advantageous embodiment of the invention, during installation, described insulator is fixed on the fixed head on mounting bracket in suspension, and described fixed head is pressed against on described first pressing plate, and the other end of described second screw rod passes described fixed head and is threaded with at least two adjusting nuts.
According to a further advantageous embodiment of the invention, described insulator also comprises: resilient rubbber cushion, and described resilient rubbber cushion is pressed against on described fixed head; With the second pressing plate, described second pressing plate is pressed against on described resilient rubbber cushion, and described second screw rod is through described resilient rubbber cushion and described second pressing plate.
According to a further advantageous embodiment of the invention, described insulator also comprises: flange, and described Flange joint is at the bottom end of the insulator relative with described insulator top first pressing plate of described silicon rubber cluster parachute, and described flange is suitable for use in suspension transmission line.
According to a further advantageous embodiment of the invention, described transmission line is the transmission line of subway or high ferro, and being formed between the pantograph of described transmission line and subway or high ferro locomotive can the electrical connection of relative sliding.
According to a further advantageous embodiment of the invention, described spring is helical spring or butterfly spring.
Compared with prior art, in various embodiments of the present invention, employing the spring mechanism of axial compression can realize the axially large spring function of insulator, gold utensil and high-strength epoxy glass fiber rod is inlaid in the main body of silicon rubber cluster parachute simultaneously, thus improves the radial rigidity of insulator.In addition, in the present invention, be also equipped with in the hole of gold utensil for locating or the rigidity briquetting of Compress Spring and radial pin, thus the radial rigidity of insulator can be improved further.
Accompanying drawing explanation
Fig. 1 display is according to the cutaway view of the insulator of the first embodiment of the present invention;
The cutaway view of Fig. 2 display insulator according to a second embodiment of the present invention;
The cutaway view of Fig. 3 display insulator according to the third embodiment of the invention;
The cutaway view of Fig. 4 display insulator according to a fourth embodiment of the invention;
The cutaway view of Fig. 5 display insulator according to a fifth embodiment of the invention;
The cutaway view of Fig. 6 display insulator according to a sixth embodiment of the invention;
The cutaway view of Fig. 7 display insulator according to a seventh embodiment of the invention;
Fig. 8 display is according to the cutaway view of the insulator of the eighth embodiment of the present invention; With
Fig. 9 display is according to the cutaway view of the insulator of the ninth embodiment of the present invention.
Embodiment
Be described below in detail the embodiment of exemplary of the present invention, the example of embodiment is shown in the drawings, and wherein same or analogous label represents same or analogous element.Below with reference to the accompanying drawings the embodiment described is exemplary, is intended to explain the present invention, and can not be interpreted as limitation of the present invention.
[the first embodiment]
Fig. 1 display is according to the cutaway view of the insulator 100 of the first embodiment of the present invention.
In a preferred embodiment of the invention, insulator 100 is the insulator of the transmission line for supporting subway or high ferro in suspension.In this applicable cases, transmission line is electrically connected slidably with the pantograph of subway or high ferro locomotive.As in the introduction say, the insulator of this subway or high ferro must have enough axial elasticities, simultaneously must have enough radial rigidities again.But note that insulator of the present invention is not limited to this, it can be the insulator of any transmission line.
As shown in Figure 1, insulator 100 mainly comprises silicon rubber cluster parachute 109, gold utensil 107, epoxy fibreglass rod 110, spring 106, rigidity briquetting 105, first pressing plate 104 and screw rod 101.
In the embodiment shown in fig. 1, silicon rubber cluster parachute 109 has cylindrical body, is formed with the inner chamber extended along its axial (axis) X in this cylindrical body.
Please continue see Fig. 1, gold utensil 107 is arranged in the inner chamber of silicon rubber cluster parachute 109, and is positioned at the half portion haply of inner chamber.The half portion haply of silicon rubber cluster parachute 109 is embossed on gold utensil 107.The upper surface of gold utensil 107 is roughly concordant with the upper opening end face of the inner chamber of silicon rubber cluster parachute 109.
As shown in Figure 1, epoxy fibreglass rod 110 is arranged in the inner chamber of silicon rubber cluster parachute 109, and is positioned at the roughly Lower Half of inner chamber.The upper surface of epoxy fibreglass rod 110 is concordant with the lower surface of gold utensil 107 and contact with each other, and the lower surface of epoxy fibreglass rod 110 is roughly concordant with the lower openings end face of the inner chamber of silicon rubber cluster parachute 109 or protrude a little.The side face close contact of the outer peripheral face of epoxy fibreglass rod 110 and the inner chamber of silicon rubber cluster parachute 109.In one embodiment of the invention, silicon rubber cluster parachute 109 can be embossed on epoxy fibreglass rod 110.
In the embodiment shown in fig. 1, insulator 100 also comprises the flange 111 being positioned at its lower end, this flange 111 is threaded with the lower end of epoxy fibreglass rod 110, the lower mould of silicon rubber cluster parachute 109 is pressed on flange 111, and the lower surface of epoxy fibreglass rod 110 is resisted against on the end face of flange 111, thus epoxy fibreglass rod 110 is fixed in the inner chamber of the cylindrical body of silicon rubber cluster parachute 109.
Although not shown, transmission line for fixing and maintenance transmission line, thus is supported on insulator 100 by flange 111 in suspension.
Please continue see Fig. 1, gold utensil 107 is formed annular first accepting hole 108 extended along aforementioned axial X.Preferably, as shown in Figure 1, annular first accepting hole 108 does not penetrate gold utensil 107, and its underpart has diapire.But the present invention is not limited to this, annular first accepting hole 108 also can penetrate gold utensil 107.
As shown in Figure 1, helical spring 106 is heavy to be located in annular first accepting hole 108 of gold utensil 107, and the lower end abutment of helical spring 106 is on the diapire of annular first accepting hole 108.
In the embodiment shown in fig. 1, rigidity briquetting 105 and the first pressing plate 104 are rigidly connected, and rigidity briquetting 105 mates with annular first accepting hole 108, be assemblied in annular first accepting hole 108 of gold utensil 107, and the lower end of rigidity briquetting 105 is pressed on helical spring 106, (towards epoxy fibreglass rod 110) extrusion spiral spring 106 down.In the present invention, rigidity briquetting 105 not only can play the effect of location and extrusion spiral spring 106, but also can improve the radial rigidity of silicon rubber cluster parachute 109.
As shown in Figure 1, the first pressing plate 104 is squeezed on rigidity briquetting 105, for locating and maintaining rigidity briquetting 105.
It is (not shown that insulator 100 can be fixed on a supporter, such as high-voltage wire pole or subway tunnel wall) fixed head 103 on, thus can be suspended on this supporter, in the embodiment shown in fig. 1, fixed head 103 is pressed against on the first pressing plate 104.
As shown in Figure 1, gold utensil 107 is also formed with threaded mounting hole 112a that is that X vertically extends and that keep apart with the first accepting hole 108.Epoxy fibreglass rod 110 is formed with the threaded mounting hole 112b that X vertically extends, this threaded mounting hole 112b and the threaded mounting hole 112a on gold utensil 107 are relative and form a complete threaded mounting hole 112 when installment state on axial X.
As shown in Figure 1, screw rod 101 extends along aforementioned axial X, one end of screw rod 101 is threaded with the threaded mounting hole 112b on epoxy fibreglass rod 110 through gold utensil 107 via the threaded mounting hole 112a on gold utensil 107, and the other end is through the first pressing plate 104 and fixed head 103 and be threaded with at least two adjusting nuts 102.In the illustrated embodiment in which, the decrement of adjustable screw spring 106 can be carried out by rotating adjusting nut 102, thus the elasticity of adjustable screw spring 106, according to practical situations, the axial elasticity of insulator 100 can be adjusted to most suitable degree.
In the embodiment shown in fig. 1, be also formed with the center tapped through hole of isolating with annular first accepting hole 108 in gold utensil 107, screw rod 101 passes the center tapped through hole of gold utensil 107 and is threaded with the center tapped through hole of gold utensil 107.In the illustrated embodiment in which, screw rod 101 is full flight screw, and it is also threaded with the first pressing plate 104 and fixed head 103.
In the embodiment shown in fig. 1, by the helical spring 106 of axial compression the axially large aeroelastic requirements of insulator 100 can be realized, simultaneously, by gold utensil 107, epoxy fibreglass rod 110 and gold utensil 107 are inlaid in the inner chamber of the cylindrical body of silicon rubber cluster parachute 109, thus the main body rigidity of silicon rubber cluster parachute 109 can be improved, thus achieve the requirement of the radial large rigidity of insulator 100.
[the second embodiment]
The cutaway view of Fig. 2 display insulator 200 according to a second embodiment of the present invention.
As shown in Figure 2, insulator 200 mainly comprises silicon rubber cluster parachute 209, gold utensil 207, epoxy fibreglass rod 210, spring 206, rigidity briquetting 205, first pressing plate 204 and screw rod 201.
In the embodiment shown in Figure 2, silicon rubber cluster parachute 209 has cylindrical body, is formed with the inner chamber extended along its axial (axis) X in this cylindrical body.
Please continue see Fig. 2, gold utensil 207 is arranged in the inner chamber of silicon rubber cluster parachute 209, and is positioned at the half portion haply of inner chamber.The half portion haply of silicon rubber cluster parachute 209 is embossed on gold utensil 207.The upper surface of gold utensil 207 is roughly concordant with the upper opening end face of the inner chamber of silicon rubber cluster parachute 209.
As shown in Figure 2, epoxy fibreglass rod 210 is arranged in the inner chamber of silicon rubber cluster parachute 209, and is positioned at the roughly Lower Half of inner chamber.The upper surface of epoxy fibreglass rod 210 is concordant with the lower surface of gold utensil 207 and contact with each other, and the lower surface of epoxy fibreglass rod 210 is roughly concordant with the lower openings end face of the inner chamber of silicon rubber cluster parachute 209 or protrude a little.The side face close contact of the outer peripheral face of epoxy fibreglass rod 210 and the inner chamber of silicon rubber cluster parachute 209.
In the embodiment shown in Figure 2, insulator 200 also comprises the flange 211 being positioned at its lower end, this flange 211 is threaded with the lower end of epoxy fibreglass rod 210, the lower mould of silicon rubber cluster parachute 209 is pressed on flange 211, and the lower surface of epoxy fibreglass rod 210 is resisted against on the end face of flange 211, thus epoxy fibreglass rod 210 is fixed in the inner chamber of the cylindrical body of silicon rubber cluster parachute 209.
Although not shown, transmission line for fixing and maintenance transmission line, thus is supported on insulator 200 by flange 211 in suspension.
Please continue see Fig. 2, gold utensil 207 is formed central cylindrical first accepting hole 208 extended along aforementioned axial X.Preferably, as shown in Figure 2, the bottom of central cylindrical first accepting hole 208 has base wall portion.
As shown in Figure 2, helical spring 206 is heavy to be located in central cylindrical first accepting hole 208 of gold utensil 207, and the lower end abutment of helical spring 206 is on the diapire of central cylindrical first accepting hole 208.
In the embodiment shown in Figure 2, rigidity briquetting 205 and the first pressing plate 204 are rigidly connected, and rigidity briquetting 205 mates with central cylindrical first accepting hole 208, be assemblied in central cylindrical first accepting hole 208 of gold utensil 207, and the lower end of rigidity briquetting 205 is pressed on helical spring 206, (towards epoxy fibreglass rod 210) extrusion spiral spring 206 down.In the present invention, rigidity briquetting 205 not only can play the effect of location and extrusion spiral spring 206, but also can improve the radial rigidity of silicon rubber cluster parachute 209.
As shown in Figure 2, the first pressing plate 204 is squeezed on rigidity briquetting 205, for locating and maintaining rigidity briquetting 205.
It is (not shown that insulator 200 can be fixed on a supporter, such as high-voltage wire pole or subway tunnel wall) fixed head 203 on, thus can be suspended on this supporter, in the embodiment shown in Figure 2, fixed head 203 is pressed against on the first pressing plate 204.
As shown in Figure 2, gold utensil 207 is also formed with that X vertically extends and the threaded mounting hole 212a be communicated with the first accepting hole 208.Epoxy fibreglass rod 210 is formed with the threaded mounting hole 212b that X vertically extends, this threaded mounting hole 212b and the threaded mounting hole 212a on gold utensil 207 are relative and form a complete threaded mounting hole 212 when installment state on axial X.
As shown in Figure 2, screw rod 201 extends along aforementioned axial X, one end of screw rod 201 is threaded with the threaded mounting hole 212b on epoxy fibreglass rod 210 through gold utensil 207 via the threaded mounting hole 212a on gold utensil 207, and the other end is through the first pressing plate 204 and fixed head 203 and be threaded with at least two adjusting nuts 202.In the illustrated embodiment in which, the decrement of adjustable screw spring 206 can be carried out by rotating adjusting nut 202, thus the elasticity of adjustable screw spring 206, according to practical situations, the axial elasticity of insulator 200 can be adjusted to most suitable degree.
In the embodiment shown in Figure 2, screw rod 201 through central cylindrical first accepting hole 208 of gold utensil 207, and is slidably matched with the rigidity briquetting 205 be contained in central cylindrical first accepting hole 208 and helical spring 206.In the illustrated embodiment in which, screw rod 201 is also threaded with the first pressing plate 204 and fixed head 203.
In the embodiment shown in Figure 2, by the helical spring 206 of axial compression the axially large aeroelastic requirements of insulator 200 can be realized, simultaneously, by gold utensil 207, epoxy fibreglass rod 210 and gold utensil 207 are inlaid in the inner chamber of the cylindrical body of silicon rubber cluster parachute 209, thus the main body rigidity of silicon rubber cluster parachute 209 can be improved, thus achieve the requirement of the radial large rigidity of insulator 200.
[the 3rd embodiment]
The cutaway view of Fig. 3 display insulator 300 according to the third embodiment of the invention.
The insulator 300 of the 3rd embodiment shown in Fig. 3 is only with the difference of the insulator 100 of the first embodiment shown in Fig. 1: the 3rd embodiment butterfly spring 306 shown in Fig. 3 instead of the helical spring 106 of the first embodiment shown in Fig. 1.In addition, the insulator 300 of the 3rd embodiment shown in Fig. 3 is identical with the insulator 100 of the first embodiment shown in Fig. 1, for simplicity, repeats no more here.
[the 4th embodiment]
The cutaway view of Fig. 4 display insulator 400 according to a fourth embodiment of the invention.
The insulator 400 of the 4th embodiment shown in Fig. 4 is only with the difference of the insulator 200 of the second embodiment shown in Fig. 2: the 4th embodiment butterfly spring 406 shown in Fig. 4 instead of the helical spring 206 of the second embodiment shown in Fig. 2.In addition, the insulator 400 of the 4th embodiment shown in Fig. 4 is substantially identical with the insulator 200 of the second embodiment shown in Fig. 2, and same or analogous parts adopt same or analogous Reference numeral to represent, for simplicity, repeat no more here.
[the 5th embodiment]
The cutaway view of Fig. 5 display insulator 500 according to a fifth embodiment of the invention.
The insulator 500 of the 5th embodiment shown in Fig. 5 is only with the difference of the insulator 100 of the first embodiment shown in Fig. 1: the insulator 500 of the 5th embodiment shown in Fig. 5 also comprises resilient rubbber cushion 512 and the second pressing plate 513.
In the 5th embodiment shown in Fig. 5, resilient rubbber cushion 512 is pressed against on fixed head 503, and the second pressing plate 513 is pressed against on resilient rubbber cushion 512, simultaneously, the other end of screw rod 501 through resilient rubbber cushion 512 and the second pressing plate 513, and is threaded with resilient rubbber cushion 512 and the second pressing plate 513.
In addition, the insulator 500 of the 5th embodiment shown in Fig. 5 is substantially identical with the insulator 100 of the first embodiment shown in Fig. 1, and same or analogous parts adopt same or analogous Reference numeral to represent, for simplicity, repeat no more here.
In the insulator 500 of the 5th embodiment shown in Fig. 5, by the resilient rubbber cushion 512 set up in addition, insulator 500 axial elasticity can be improved further, thus realize insulator 500 axially large flexible requirement.
[the 6th embodiment]
The cutaway view of Fig. 6 display insulator 600 according to a sixth embodiment of the invention.
As shown in Figure 6, insulator 600 mainly comprises silicon rubber cluster parachute 609, gold utensil 607, epoxy fibreglass rod 610, spring 606, rigidity briquetting 605, first pressing plate 604 and screw rod 601.
In the embodiment shown in fig. 6, silicon rubber cluster parachute 609 has cylindrical body, is formed with the inner chamber extended along its axial (axis) X in this cylindrical body.
Please continue see Fig. 6, gold utensil 607 is arranged in the inner chamber of silicon rubber cluster parachute 609, and is positioned at the half portion haply of inner chamber.The half portion haply of silicon rubber cluster parachute 609 is embossed on gold utensil 607.The upper surface of gold utensil 607 is roughly concordant with the upper opening end face of the inner chamber of silicon rubber cluster parachute 609.
As shown in Figure 6, epoxy fibreglass rod 610 is arranged in the inner chamber of silicon rubber cluster parachute 609, and is positioned at the roughly Lower Half of inner chamber.The upper surface of epoxy fibreglass rod 610 is concordant with the lower surface of gold utensil 607 and contact with each other, and the lower surface of epoxy fibreglass rod 610 is roughly concordant with the lower openings end face of the inner chamber of silicon rubber cluster parachute 609 or protrude a little.The side face close contact of the outer peripheral face of epoxy fibreglass rod 610 and the inner chamber of silicon rubber cluster parachute 609.
In the embodiment shown in fig. 6, insulator 600 also comprises the flange 611 being positioned at its lower end, this flange 611 is threaded with the lower end of epoxy fibreglass rod 610, the lower mould of silicon rubber cluster parachute 609 is pressed on flange 611, and the lower surface of epoxy fibreglass rod 610 is resisted against on the end face of flange 611, thus epoxy fibreglass rod 610 is fixed in the inner chamber of the cylindrical body of silicon rubber cluster parachute 609.
Although not shown, transmission line for fixing and maintenance transmission line, thus is supported on insulator 600 by flange 611 in suspension.
Please continue see Fig. 6, gold utensil 607 is formed central cylindrical first accepting hole 608 extended along aforementioned axial X.Preferably, as shown in Figure 6, the bottom of central cylindrical first accepting hole 608 has base wall portion.
As shown in Figure 6, helical spring 606 is heavy to be located in central cylindrical first accepting hole 608 of gold utensil 607, the lower end abutment of helical spring 606 on the diapire of central cylindrical first accepting hole 608, the upper end of the direct extrusion spiral spring 606 of the first pressing plate 604.
In the embodiment shown in fig. 6, gold utensil 607 is also formed with annular second accepting hole 613, this annular second accepting hole 613 is kept apart with central cylindrical first accepting hole 608.Annular rigidity briquetting 605 mates with annular second accepting hole 613, and is assemblied in annular second accepting hole 613 of gold utensil 607.In the present invention, rigidity briquetting 605 and the first pressing plate 604 are rigidly connected and by the guiding of annular second accepting hole 613, not only can play the effect of location first pressing plate 604 and helical spring 606, but also can improve the radial rigidity of silicon rubber cluster parachute 609.
It is (not shown that insulator 600 can be fixed on a supporter, such as high-voltage wire pole or subway tunnel wall) fixed head 603 on, thus can be suspended on this supporter, in the embodiment shown in fig. 6, fixed head 603 is pressed against on the first pressing plate 604.
As shown in Figure 6, gold utensil 607 is also formed with that X vertically extends and the threaded mounting hole (not shown, to refer to Fig. 2) be communicated with the first accepting hole 608.Threaded mounting hole epoxy fibreglass rod 610 being formed with X extension is vertically (not shown, refer to Fig. 2), the threaded mounting hole on epoxy fibreglass rod 610 and the threaded mounting hole on gold utensil 607 are relative and form a complete threaded mounting hole when installment state on axial X.
As shown in Figure 6, screw rod 601 extends along aforementioned axial X, one end of screw rod 601 is threaded with the threaded mounting hole on epoxy fibreglass rod 210 through gold utensil 607 via the threaded mounting hole on gold utensil 607, and the other end is through the first pressing plate 604 and fixed head 603 and be threaded with at least two adjusting nuts 602.In the illustrated embodiment in which, the decrement of adjustable screw spring 606 can be carried out by rotating adjusting nut 602, thus the elasticity of adjustable screw spring 606, according to practical situations, the axial elasticity of insulator 600 can be adjusted to most suitable degree.
In the embodiment shown in fig. 6, screw rod 601 through central cylindrical first accepting hole 608 of gold utensil 607, and is slidably matched with the rigidity briquetting 605 be contained in central cylindrical first accepting hole 608 and helical spring 606.In the illustrated embodiment in which, screw rod 601 is also threaded with the first pressing plate 604 and fixed head 603.
In the embodiment shown in fig. 6, by the helical spring 606 of axial compression the axially large aeroelastic requirements of insulator 600 can be realized, simultaneously, by gold utensil 607, epoxy fibreglass rod 610 and gold utensil 607 are inlaid in the inner chamber of the cylindrical body of silicon rubber cluster parachute 609, thus the main body rigidity of silicon rubber cluster parachute 609 can be improved, thus achieve the requirement of the radial large rigidity of insulator 600.
[the 7th embodiment]
The cutaway view of Fig. 7 display insulator 700 according to a seventh embodiment of the invention.
The insulator 700 of the 7th embodiment shown in Fig. 7 is only with the difference of the insulator 100 of the first embodiment shown in Fig. 1: the insulator 700 of the 7th embodiment shown in Fig. 7 eliminates the rigidity briquetting 105 in the insulator 100 of the first embodiment shown in Fig. 1.
In the 7th embodiment shown in Fig. 7, the first pressing plate 704 is directly squeezed on spring 706.
Compared with the first embodiment shown in Fig. 1, the advantage of the insulator 700 of the 7th embodiment shown in Fig. 7 is to simplify the structure.Such as, but in the 7th embodiment shown in Fig. 7, unaffected in order to ensure the radial rigidity of insulator 700, suitably can improve the rigidity of screw rod 701, screw rod 701 can adopt the larger material of rigidity to make, or increase the diameter etc. of screw rod 701.
In addition, the insulator 700 of the 7th embodiment shown in Fig. 7 is substantially identical with the insulator 100 of the first embodiment shown in Fig. 1, and same or analogous parts adopt same or analogous Reference numeral to represent, for simplicity, repeat no more here.
[the 8th embodiment]
Fig. 8 display is according to the cutaway view of the insulator 800 of the eighth embodiment of the present invention.
In a preferred embodiment of the invention, insulator 800 is the insulator of the transmission line for supporting subway or high ferro in suspension.In this applicable cases, transmission line is electrically connected slidably with the pantograph of subway or high ferro locomotive.As in the introduction say, the insulator of this subway or high ferro must have enough axial elasticities, simultaneously must have enough radial rigidities again.But note that insulator of the present invention is not limited to this, it can be the insulator of any transmission line.
As shown in Figure 8, insulator 800 mainly comprises silicon rubber cluster parachute 809, gold utensil 807, epoxy fibreglass rod 810, spring 806, first rigidity briquetting 805, first pressing plate 804 and the second rigidity briquetting 813.
In the embodiment shown in fig. 8, silicon rubber cluster parachute 809 has cylindrical body, is formed with the inner chamber extended along its axial (axis) X in this cylindrical body.
Please continue see Fig. 8, epoxy fibreglass rod 810 is arranged in the inner chamber of silicon rubber cluster parachute 809, and is roughly full of whole inner chamber.The upper end of epoxy fibreglass rod 810 is formed with the assembling recess 817 coordinated with gold utensil 807, and gold utensil 807 is inlaid in the assembling recess 817 of epoxy fibreglass rod 810.The side face close contact of the outer peripheral face of epoxy fibreglass rod 810 and the inner chamber of silicon rubber cluster parachute 809.In one embodiment of the invention, silicon rubber cluster parachute 809 can be embossed on epoxy fibreglass rod 810.The upper surface of gold utensil 807 is roughly concordant with the upper opening end face of the inner chamber of silicon rubber cluster parachute 809.
In the embodiment shown in fig. 8, insulator 800 also comprises the flange 811 being positioned at its lower end, this flange 811 is threaded with the lower end of epoxy fibreglass rod 810, the lower mould of silicon rubber cluster parachute 809 is pressed on flange 811, and the lower surface of epoxy fibreglass rod 810 is resisted against on the end face of flange 811, thus epoxy fibreglass rod 810 is fixed in the inner chamber of the cylindrical body of silicon rubber cluster parachute 809.
Although not shown, transmission line for fixing and maintenance transmission line, thus is supported on insulator 800 by flange 811 in suspension.
Please continue see Fig. 8, gold utensil 807 is formed the first accepting hole 808 extended along aforementioned axial X.
As shown in Figure 8, first rigidity briquetting 805 is assemblied in the first accepting hole 808 of gold utensil 807, be formed with the axial hole (sign) coordinated with the second rigidity briquetting 813 in first rigidity briquetting 805, the second rigidity briquetting 813 is slidably received in the axial hole of the first rigidity briquetting 805.
As shown in Figure 8, spring 806 is set up and is squeezed between the first and second rigidity briquettings 805,813.
In the present invention, the first and second rigidity briquettings 805,813 not only can play the effect of location and extrusion spring 806, but also can improve the radial rigidity of silicon rubber cluster parachute 809.
As shown in Figure 8, the first pressing plate 804 is squeezed on the first rigidity briquetting 805, for locating and maintaining the first rigidity briquetting 805.
It is (not shown that insulator 800 can be fixed on a supporter, such as high-voltage wire pole, subway tunnel wall) fixed head 803 on, thus be suspended on this supporter, in the embodiment shown in fig. 8, fixed head 803 is pressed against on the first pressing plate 804.
As shown in Figure 8, gold utensil 807 is also formed with that X vertically extends and the installing hole 812a be communicated with the first accepting hole 808.Epoxy fibreglass rod 810 is formed with the installing hole 812b that X vertically extends, this installing hole 812b and the installing hole 812a on gold utensil 807 are relative and form a complete installing hole 812 when installment state on axial X.
As shown in Figure 8, the second rigidity briquetting 813 portion integral be formed with the first screw rod 814, first screw rod 814 passes the installing hole 812 of gold utensil 807 and epoxy fibreglass rod 810 and is threaded with them, thus the second briquetting 813, gold utensil 807 and epoxy fibreglass rod 810 is fitted together.
As shown in Figure 8, insulator 800 also comprises at least two radial pins 815, and this radial pin 815 extends along the radial direction of silicon rubber cluster parachute 809 and is fixed on gold utensil 807 and epoxy fibreglass rod 810.Owing to inserting radial pin 815 on insulator 800, therefore, the radial rigidity of insulator 800 can be improved further.
As shown in Figure 8, radial hole 816 is formed in first rigidity briquetting 805, the inner of radial pin 815 extends in the radial hole 816 of the first rigidity briquetting 805, and the diameter of the radial hole 816 of the first rigidity briquetting 805 is greater than radial pin 815, make the first rigidity briquetting 805 can relative to radial pin 815 vertically X move in preset distance, thus the decrement of spring 806 to be limited in preset distance.
As shown in Figure 8, the upper end of the first rigidity briquetting 805 is formed with the second screw rod 801, first rigidity briquetting 805 that X vertically extends and is threaded with the first pressing plate 804 by the second screw rod 801.
As shown in Figure 8, during installation, insulator 800 is fixed on the fixed head 803 on mounting bracket in suspension, and fixed head 803 is pressed against on the first pressing plate 804, and the second screw rod 801 through fixed head 803 being threaded with at least two adjusting nuts 802.In the illustrated embodiment in which, the decrement of adjustable screw spring 806 can be carried out by rotating adjusting nut 802, thus the elasticity of adjustable screw spring 806, according to practical situations, the axial elasticity of insulator 800 can be adjusted to most suitable degree.
Although not shown, insulator 800 can also comprise: the second pressing plate being pressed against the resilient rubbber cushion on fixed head 803 and being pressed against on resilient rubbber cushion.Second screw rod 801 can be threaded with aforesaid adjusting nut 802 through resilient rubbber cushion and the second pressing plate.
In the embodiment shown in fig. 8, spring 806 can be helical spring or butterfly spring.
[the 9th embodiment]
Fig. 9 display is according to the cutaway view of the insulator 900 of the ninth embodiment of the present invention.
The insulator 900 of the 9th embodiment shown in Fig. 9 is mainly with the difference of the insulator 800 of the 8th embodiment shown in Fig. 8: as shown in Figure 9, the upper end of epoxy fibreglass rod 910 is end faces of general planar, and the lower end of gold utensil 907 is also the end face of general planar, therefore, in the 9th embodiment shown in Fig. 9, the upper end of epoxy fibreglass rod 910 roughly evenly coordinates with the lower end of gold utensil 907.
As shown in Figure 9, the radial pin 914 extended along the radial direction of silicon rubber cluster parachute 909 inserts and is fixed on gold utensil 907.
As shown in Figure 9, gold utensil 907 is arranged in the inner chamber of silicon rubber cluster parachute 909, and is positioned at the half portion haply of inner chamber.The half portion haply of silicon rubber cluster parachute 909 is embossed on gold utensil 907.The upper surface of gold utensil 907 is roughly concordant with the upper opening end face of the inner chamber of silicon rubber cluster parachute 909.
As shown in Figure 9, epoxy fibreglass rod 910 is arranged in the inner chamber of silicon rubber cluster parachute 909, and is positioned at the roughly Lower Half of inner chamber.The upper surface of epoxy fibreglass rod 910 is concordant with the lower surface of gold utensil 907 and contact with each other, and the lower surface of epoxy fibreglass rod 910 is roughly concordant with the lower openings end face of the inner chamber of silicon rubber cluster parachute 909 or protrude a little.The side face close contact of the outer peripheral face of epoxy fibreglass rod 910 and the inner chamber of silicon rubber cluster parachute 909.In one embodiment of the invention, silicon rubber cluster parachute 909 can be embossed on epoxy fibreglass rod 910.
In addition, the insulator 900 of the 9th embodiment shown in Fig. 9 is substantially identical with the insulator 800 of the 8th embodiment shown in Fig. 8, and same or analogous parts adopt same or analogous Reference numeral to represent, for simplicity, repeat no more here.
Although illustrate and describe embodiments of the invention, for the ordinary skill in the art, be appreciated that and can change these embodiments without departing from the principles and spirit of the present invention.The scope of application of the present invention is by claims and equivalents thereof.
Claims (33)
1. an insulator, is characterized in that, described insulator (100) comprising:
Silicon rubber cluster parachute (109), described silicon rubber cluster parachute (109) has cylindrical body, is formed with the inner chamber extended along its axial (X) in described cylindrical body;
Be arranged in gold utensil (107) and the epoxy fibreglass rod (110) of the inner chamber of described silicon rubber cluster parachute (109), described gold utensil (107) and epoxy fibreglass rod (110) fit together mutually, and are formed with the first accepting hole (108) extended along described axis (X) in described gold utensil (107);
Be contained in the spring (106) in first accepting hole (108) of described gold utensil (107); With
The compression set (104,105) of described spring (106) is compressed along described axis (X).
2. insulator according to claim 1, is characterized in that,
Described gold utensil (107) is formed with the first threaded mounting hole (112a) extended along described axis (X), and on described epoxy fibreglass rod (110), be formed with the second threaded mounting hole (112b) extended along described axis (X), this second threaded mounting hole (112b) and described first threaded mounting hole (112a) on described gold utensil (107) described axis (X) upper relative and in installment state time form a complete threaded mounting hole (112);
Described gold utensil (107) and described epoxy fibreglass rod (110) are fitted together mutually by the screw rod (101) being screwed into described complete threaded mounting hole (112).
3. insulator according to claim 2, is characterized in that,
Described screw rod (101) extends along described axis (X), one end of described screw rod (101) is threaded with second threaded mounting hole (112b) of described epoxy fibreglass rod (110) through described gold utensil (107) via described first threaded mounting hole (112a), and the other end is through described compression set (104,105) and be threaded with at least two adjusting nuts (102).
4. insulator according to claim 3, is characterized in that, described compression set (104,105) comprises the first pressing plate (104) be directly pressed against on described spring (106).
5. insulator according to claim 3, is characterized in that,
Described compression set (104,105) comprises the first pressing plate (104) and rigidity briquetting (105) rigidly connected with described first pressing plate (104), and described rigidity briquetting (105) to be assemblied in first accepting hole (108) of described gold utensil (107) and to be pressed against on described spring (106).
6. insulator according to claim 3, is characterized in that,
Described gold utensil (607) is also formed extend along described axis (X), with separated second accepting hole (613) of described first accepting hole (608);
Described compression set comprises the first pressing plate (604) be directly pressed against on described spring (606);
Described insulator also comprises rigidity briquetting (605) rigidly connected with described first pressing plate (604), and described rigidity briquetting (605) is assemblied in second accepting hole (613) of described gold utensil (607).
7. the insulator according to any one of claim 4-6, it is characterized in that, during installation, described insulator (100) is fixed on the fixed head (103) on mounting bracket in suspension, described fixed head (103) is pressed against on described first pressing plate (104), and the other end of described screw rod (101) is through described fixed head (103).
8. insulator according to claim 7, is characterized in that, described insulator (500) also comprises:
Resilient rubbber cushion (512), described resilient rubbber cushion (512) is pressed against on described fixed head (503); With
Second pressing plate (513), described second pressing plate (513) is pressed against on described resilient rubbber cushion (512),
The other end of described screw rod (501) is through described resilient rubbber cushion (512) and described second pressing plate (513).
9. insulator according to claim 7, is characterized in that, described first accepting hole (108) in described gold utensil (107) is the looping pit towards outward opening.
10. insulator according to claim 9, is characterized in that, described complete threaded mounting hole (112) is the screwed hole of centre of keeping apart with described first accepting hole (108).
11. insulators according to claim 9, it is characterized in that, described first accepting hole (408) in described gold utensil (407) is the central cylindrical hole towards outward opening be communicated with described complete threaded mounting hole (412), and described complete threaded mounting hole (412) is positioned at the center of described first accepting hole (408).
12. insulators according to claim 11, it is characterized in that, described screw rod (401) through the described complete threaded mounting hole (412) at the first accepting hole (408) center being positioned at described gold utensil (407), and is slidably matched with the rigidity briquetting (405) be contained in the first accepting hole (408) and spring (406).
13. insulators according to claim 7, is characterized in that, described insulator (100) also comprises:
Flange (111), described flange (111) is connected to the bottom end of the insulator relative with described insulator top first pressing plate (104) of described silicon rubber cluster parachute (109), and described flange (111) is suitable for use in suspension transmission line.
14. insulators according to claim 13, is characterized in that, described transmission line is the transmission line of subway or high ferro, and being formed between the pantograph of described transmission line and subway or high ferro locomotive can the electrical connection of relative sliding.
15. insulators according to claim 7, is characterized in that, described screw rod (101) is threaded with described first pressing plate (104) and fixed head (103).
16. insulators according to claim 8, is characterized in that, described screw rod (501) is threaded with described first pressing plate (504), fixed head (503) and the second pressing plate (513).
17. insulators according to claim 1, is characterized in that, described spring (106) is helical spring or butterfly spring.
18. insulators according to claim 6, is characterized in that, described second accepting hole (613) is the looping pit towards outward opening.
19. insulators according to claim 1, is characterized in that, described compression set (804,805,813) comprising:
First pressing plate (804);
The the first rigidity briquetting (805) be connected with described first pressing plate (804), described first rigidity briquetting (805) is assemblied in first accepting hole (808) of described gold utensil (807) slidably; With
Be contained in the second rigidity briquetting (813) in described first accepting hole (808) and relative with described first rigidity briquetting (805), described spring (806) is compressed between described first and second rigidity briquettings (805,813).
20. insulators according to claim 19, is characterized in that,
Described gold utensil (807) is formed with the first threaded mounting hole (812a) extended along described axis (X), and on described epoxy fibreglass rod (810), be formed with the second threaded mounting hole (812b) extended along described axis (X), this second threaded mounting hole (812b) and described first threaded mounting hole (812a) on described gold utensil (807) described axis (X) upper relative and in installment state time form a complete threaded mounting hole (812);
Described gold utensil (807) and described epoxy fibreglass rod (810) are fitted together mutually by the first screw rod (814) being screwed into described complete threaded mounting hole (812).
21. insulators according to claim 20, is characterized in that,
Be formed with the axial hole coordinated with the second rigidity briquetting (813) in described first rigidity briquetting (805), described second rigidity briquetting (813) is slidably received in the axial hole of described first rigidity briquetting (805).
22. insulators according to claim 21, is characterized in that, described first screw rod (814) is formed on the bottom of described second rigidity briquetting (813).
23. insulators according to claim 22, is characterized in that,
The upper end of described epoxy fibreglass rod (810) is formed with the assembling recess (817) coordinated with described gold utensil (807), and described gold utensil (807) is inlaid in the assembling recess (817) of described epoxy fibreglass rod (810).
24. insulators according to claim 23, is characterized in that,
Described insulator also comprises at least two radial pins (815), and described radial pin (815) extends along the radial direction of described silicon rubber cluster parachute (809) and is fixed on described gold utensil (807) and described epoxy fibreglass rod (810).
25. insulators according to claim 22, is characterized in that,
The upper end of described epoxy fibreglass rod (910) roughly evenly coordinates with the lower end of described gold utensil (907), and described first rigidity briquetting (805) and the second rigidity briquetting (813) are contained in the first accepting hole (908) on described gold utensil (910).
26. insulators according to claim 25, is characterized in that,
Described insulator also comprises at least two radial pins (914), and described radial pin (914) extends along the radial direction of described silicon rubber cluster parachute (909) and is fixed on described gold utensil (907).
27. insulators according to claim 24 or 26, is characterized in that,
Radial hole (816,916) is formed in described first rigidity briquetting (805,905), the inner of described radial pin (815,915) extends to the radial hole (816 of described first rigidity briquetting (805,905), 916) in, and
Described first rigidity briquetting (805,905) radial hole (816,916) diameter is greater than described radial pin (815,915) diameter, described first rigidity briquetting (805,905) can be moved along described axis (X) relative to described radial pin (815,915) in preset distance, thus the decrement of described spring (806,906) is limited in preset distance.
28. insulators according to claim 27, is characterized in that,
Described first rigidity briquetting (805,905) upper end is formed with the second screw rod (801), and described first rigidity briquetting (805,905) is by described second screw rod (801,801) be threaded with described first pressing plate (804,804).
29. insulators according to claim 28, it is characterized in that, during installation, described insulator (800,900) fixed head (803 on mounting bracket is fixed in suspension, 903) on, described fixed head (803,903) described first pressing plate (804 is pressed against, 904) on, and described second screw rod (801,901) is through described fixed head (803,903) and be threaded with at least two adjusting nuts (802,902).
30. insulators according to claim 29, is characterized in that, described insulator (800,900) also comprises:
Resilient rubbber cushion, described resilient rubbber cushion is pressed against on described fixed head (803,903); With
Second pressing plate, described second pressing plate is pressed against on described resilient rubbber cushion,
Described second screw rod (801,901) is through described resilient rubbber cushion and described second pressing plate.
31. insulators according to claim 29, is characterized in that, described insulator (800,900) also comprises:
Flange (811,911), described flange (811,911) described silicon rubber cluster parachute (809 is connected to, 909) with described insulator top first pressing plate (804,904) bottom end of relative insulator, described flange (811,911) is suitable for use in suspension transmission line.
32. insulators according to claim 31, is characterized in that, described transmission line is the transmission line of subway or high ferro, and being formed between the pantograph of described transmission line and subway or high ferro locomotive can the electrical connection of relative sliding.
33. insulators according to claim 19, is characterized in that, described spring (806,906) is helical spring or butterfly spring.
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| CN201210134900.6A CN103383884B (en) | 2012-05-03 | 2012-05-03 | Insulator |
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| GB273370A (en) * | 1926-03-19 | 1927-06-20 | British Thomson Houston Co Ltd | Improvements relating to transformers and other electrical apparatus and to electric terminals |
| US3760089A (en) * | 1972-04-27 | 1973-09-18 | Westinghouse Electric Corp | Electrical bushing assembly having resilient means enclosed within sealing means |
| CN201435277Y (en) * | 2009-05-07 | 2010-03-31 | 李鹏 | lightning-proof insulator |
| CN202632901U (en) * | 2012-05-03 | 2012-12-26 | 泰科电子(上海)有限公司 | Insulator |
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2012
- 2012-05-03 CN CN201210134900.6A patent/CN103383884B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB273370A (en) * | 1926-03-19 | 1927-06-20 | British Thomson Houston Co Ltd | Improvements relating to transformers and other electrical apparatus and to electric terminals |
| US3760089A (en) * | 1972-04-27 | 1973-09-18 | Westinghouse Electric Corp | Electrical bushing assembly having resilient means enclosed within sealing means |
| CN201435277Y (en) * | 2009-05-07 | 2010-03-31 | 李鹏 | lightning-proof insulator |
| CN202632901U (en) * | 2012-05-03 | 2012-12-26 | 泰科电子(上海)有限公司 | Insulator |
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