CN216733969U

CN216733969U - Sectional insulator

Info

Publication number: CN216733969U
Application number: CN202122428621.8U
Authority: CN
Inventors: 何铭; 耿光耀; 顾亮; 蒲向阳; 范丙志; 吴晓泉; 刁冀杰; 梁浩波; 黄雄兵
Original assignee: Lanzhou Power Supply Section Of China Railway Lanzhou Bureau Group Co ltd; Gansu Yide Rail Intelligent Equipment Co ltd
Current assignee: Lanzhou Power Supply Section Of China Railway Lanzhou Bureau Group Co ltd; Gansu Yide Rail Intelligent Equipment Co ltd
Priority date: 2021-10-09
Filing date: 2021-10-09
Publication date: 2022-06-14
Anticipated expiration: 2031-10-09

Abstract

The utility model discloses a sectional insulator which comprises an insulating rod assembly, a slideway assembly and an assembly part. The utility model has the beneficial effects that: the structural strength is high, the insulating strength is high, and the insulating design of the sectionalizer adopts polytetrafluoroethylene coating for treatment, so that the weather resistance is improved, and the self-cleaning performance is improved; the sectionalizer is provided with a working plane formed by a longer auxiliary insulation slideway and a metal slideway, and a pantograph does not have a mechanical fracture when passing through, so that the high-speed passing of the pantograph is facilitated, and the high balance is realized; the sectionalizer connection uses a screw-rivet combination fastening method, so that the nut is not loosened and basically does not need maintenance under any working condition, and the sectionalizer connection is defined as a sectionalized insulator with less maintenance and without maintenance; the potential safety hazard between a contact net and a pantograph can be avoided, so that the running cost of the electric railway in China is reduced, the stability of normal running of equipment is practically improved, the safe running of the contact net of the electrified railway is guaranteed, and equipment faults, accidents and the like caused by the contact net parts are reduced.

Description

Sectional insulator

Technical Field

The utility model relates to an insulator, in particular to a sectional insulator, and belongs to the technical field of mechanical manufacturing.

Background

The sectional insulator of the contact net is a key device for the electric railway traction power supply specialty, but has a plurality of varieties, import and home-made, and plays an important role on the electric railway in China. Through the detection of open lines of Jingzheng, Guangdong, XiangQian, Chengkun, Shuxu, Yufu and the like, the greatest place where the hard spot of the contact net is the segmented insulator is found, and the problem needs to be seriously researched and solved in order to solve the current collection of the pantograph net. According to the detection result, the formation of the large hard spot is mainly caused by the installation of the sectional insulator by combining the field actual condition and the joint analysis of the construction personnel. The sectional insulator has defects, the quality is concentrated, the installation and the adjustment are not easy, if the installation has defects, a larger hard point is easy to form, so that the pantograph of the locomotive can not stably pass through, and the safety of a pantograph net is also affected in serious cases. After the constructor adjusts and processes the problems existing in the detection, the pantograph can stably pass through when the constructor detects again, the hard point value is obviously reduced, and the installation and debugging of the insulator are realized due to the detection of the detection vehicle. In summary, the installation of the section insulator is a very important step, in addition to its inherent disadvantages.

The existing sectional insulator has the following problems:

1. the arc extinguishing angle is installed unevenly, the arc extinguishing angle is mainly used for eliminating electric arcs caused when the pantograph of the electric locomotive passes through, the arc extinguishing element is usually independently assembled as a part, because the 4 arc-extinguishing angle components are respectively installed and fixed on the 4 angle edges of the side surface of the insulator, according to the installation requirement of the insulator, each arc-extinguishing angle must form a plane parallel to the line plane in space, because 4 angular gaps are required to be arranged in the same plane, the difficulty is high, the problem of uneven installation often exists, the arc extinguishing angle is not raised or is low, when the pantograph passes through, the sectional and split-phase insulator is lifted upwards under the influence of the lifting force, so that the gravity center of the insulator is deflected to form a large hard point, the safety of a pantograph net is seriously influenced, and an arc extinguishing angle is installed irregularly to form a large hard point, so that a pantograph slide plate is deformed after being impacted;

2. the suspension strings are unevenly stressed during installation, the catenary and the contact line of the contact line on the straight line section are often not in the same vertical plane and are generally in the shape of a diagonal chain, so that the suspension strings for suspending the insulator are unequal on the left and right sides of the insulator, the bearing capacity of the suspension strings is different, the bearing capacity of the suspension string on one side is possibly increased, the working plane of the insulator cannot be parallel to the line plane, even if the suspension strings are seemingly parallel to the surface, but when the pantograph of the electric locomotive passes through, the insulator is likely to incline under the action of the upward lifting force of the pantograph due to the uneven stress of the suspension strings, and the stable transition of the pantograph at the insulator is influenced;

3. the insulator is too high in installation height, the sectional insulator serves as an insulating device, the mass distribution is concentrated, and after the sectional insulator is connected with a contact line, the contact line generates a large falling radian due to self weight, so that a large hard point is formed; therefore, the sectional insulator is installed by considering that the installation height is larger than the height of the contact wire, and the height of the Swiss sectional insulator reaches 70mm, so that the pantograph passes through the sectional insulator and is consistent with the height of the lifted contact wire. However, the measurement of a plurality of construction lines shows that the maximum lifting amount of the pantograph to the contact line only reaches 30-40mm on average and is smaller near the suspension point of the contact line with the locomotive speed lower than 80km and the contact line tension lower than 13kN, while the electric locomotives near the sectional insulator all pass at low speed and the lifting amount of the pantograph to the contact line is smaller. Thus, if the installation height of the sectional insulator is too large, the pantograph instantaneously generates an upward impact component to impact the sectional insulator to bow;

4. the installation heights of the slide way and the insulating slide way of the sectional insulator are not equal, the slide way and the insulating slide way of the sectional insulator are usually installed on site, but are limited by site conditions and the level of installation personnel, so that the slide way and the insulating slide way are easily connected unsmoothly and have inconsistent heights.

SUMMERY OF THE UTILITY MODEL

It is an object of the present invention to provide a sectional insulator in order to solve the problems.

The utility model achieves the above purpose through the following technical scheme: a section insulator comprises

The insulating rod assembly forms the main structure of the insulator and consists of insulating supports positioned at two ends and insulating rods which are connected between the two insulating supports and distributed in a parallel manner;

the slideway components are arranged on the insulating bracket and are respectively arranged at two sides of the insulating rod component, the slideway component at one side consists of a short slideway positioned above and a long slideway positioned below, and the slideway component at the other side consists of a long slideway positioned above and a short slideway positioned below;

the assembly part comprises a slideway mounting bracket used for connecting one side end of the slideway component and a long slideway supporting insulating rod used for connecting the other side end of the long slideway, the other end of the long slideway supporting insulating rod is connected with the insulating structure assembling and mounting complex arranged on the insulating rod through a long slideway supporting rod mounting plate, and two adjacent insulating structure assembling and mounting complexes are connected through an auxiliary insulating slideway.

As a still further scheme of the utility model: the outer sides of the insulating supports at the two ends are assembled and connected with a contact wire clamp complex connected with a contact wire through a wire clamp and insulating support connecting piece, and the insulating supports are formed by welding titanium alloy plates.

As a still further scheme of the utility model: the both ends of insulator spindle are provided with the insulator spindle and connect and assemble with insulating support to carry out fixed connection through the clamping screw subassembly, just the both ends pole body of insulator spindle is provided with the outer insulator that attaches of full skirt form.

As a still further scheme of the utility model: and the auxiliary insulating slideway and the insulating structure assembling and mounting complex and the long slideway supporting insulating rod and the long slideway supporting rod mounting plate are assembled and connected by adopting insulating connecting fasteners of a screw and rivet combination process.

As a still further scheme of the utility model: the long slideway and the short slideway of the slideway component are both of a [ -shaped structure, and a metal slideway insulation rigidity reinforcing plate made of a high-rigidity composite material is arranged between the slideway component and the slideway mounting bracket and between the slideway component and the insulating bracket.

As a still further scheme of the utility model: it is a plurality of constitute the plane truss structure between the insulator spindle, improve the stability in the operation, just long slide supports the insulator spindle and the insulator spindle outside adopts the polytetrafluoroethylene coating to handle.

As a still further scheme of the utility model: the auxiliary insulating slideway and the long slideway supporting insulating rod share one long slideway supporting rod mounting plate to be connected.

As a still further scheme of the utility model: the contact wire clamp complex adopts a lead-coated wire clamp, and the contact wire clamp complex and the wire clamp are connected with the insulating support connecting piece by double pins of a stress pin and a positioning pin.

The utility model has the beneficial effects that:

1. the structural strength is high, the insulating strength is high, and the insulating design of the sectionalizer adopts polytetrafluoroethylene coating for treatment, so that the weather resistance is improved, and the self-cleaning performance is improved;

2. the sectionalizer is provided with a working plane formed by a longer auxiliary insulation slideway and a metal slideway, and a pantograph does not have a mechanical fracture when passing through, so that the high-speed passing of the pantograph is facilitated, and the high balance is realized;

3. the sectionalizer connection uses a screw-rivet combination fastening method, so that the nut is not loosened and basically does not need maintenance under any working condition, and the sectionalizer connection is defined as a sectionalized insulator with less maintenance and without maintenance;

4. the potential safety hazard between contact net and the pantograph can be avoided, the inspection and the maintenance are not carried out in the service life, the reliable operation can be realized, the operation cost of the electric railway in China is reduced, the stability of the normal operation of the equipment is practically improved, the safe operation of the contact net of the electrified railway is guaranteed, and the equipment faults, accidents and the like caused by the contact net part reasons are reduced.

Drawings

FIG. 1 is a schematic top view of the present invention;

FIG. 2 is a schematic side view of the present invention.

In the figure: 1. the device comprises a contact wire, 2, a slideway installation support, 3, a contact wire clamp complex, 4, a wire clamp and insulation support connecting piece, 5, an insulation support, 6, an auxiliary insulation slideway, 7, an insulation structure assembly installation complex, 8, a long slideway, 9, a long slideway supporting insulation rod, 10, an insulation rod, 11, a long slideway supporting rod installation plate, 12, an external insulator, 13, an insulation rod joint, 14, a fixed screw rod assembly, 15, a metal slideway insulation rigidity reinforcing plate, 16 and a short slideway.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

Referring to FIGS. 1-2, a sectional insulator includes

An insulating rod assembly which forms the main structure of the insulator and consists of insulating supports 5 positioned at two ends and insulating rods 10 which are connected between the two insulating supports 5 and distributed in a parallel shape;

the slideway components are arranged on the two sides of the insulating rod component respectively by being arranged on the insulating bracket 5, the slideway component on one side consists of a short slideway 16 positioned above and a long slideway 8 positioned below, and the slideway component on the other side consists of a long slideway 8 positioned above and a short slideway 16 positioned below;

and the assembly part comprises a slideway mounting bracket 2 used for connecting one side end of the slideway component and a long slideway supporting insulating rod 9 used for connecting the other side end of the long slideway 8, the other end of the long slideway supporting insulating rod 9 is connected with an insulating structure assembling and mounting complex 7 arranged on an insulating rod 10 through a long slideway supporting rod mounting plate 11, and the two adjacent insulating structure assembling and mounting complexes 7 are connected through an auxiliary insulating slideway 6.

In the embodiment of the utility model, the outer sides of the insulating supports 5 at two ends are assembled and connected with the contact wire clamp complex 3 connected with the contact wire 1 through the wire clamp and insulating support connecting piece 4, and the insulating supports 5 are formed by welding titanium alloy plates, so that the weight is light, the strength is extremely high, and the tensile force of more than 10T can be borne without deformation.

In the embodiment of the present invention, the two ends of the insulating rod 10 are provided with insulating rod joints 13 to be assembled with the insulating bracket 5, and are fixedly connected by fixing screw assemblies 14, and shed-shaped external insulators 12 are provided on the two ends of the insulating rod 10 to increase the creepage distance of voltage.

In the embodiment of the utility model, the auxiliary insulating slideway 6 and the insulating structure assembling and mounting complex 7 and the long slideway supporting insulating rod 9 and the long slideway supporting rod mounting plate 11 are assembled and connected by adopting the insulating connecting fasteners of the screw and riveting combination process, so that no metal part exists in the whole insulating structure, a floating potential is not formed under a high electric field, the insulating aging, high electric field and overvoltage resistance of the insulating structure are greatly improved, and after the nuts of the insulating connecting fasteners are fastened, the head of the screw with a hollow structure in the middle is screwed and riveted, so that the nuts are not loosened under any working condition, maintenance is not basically needed, and the insulating structure is defined as a segmented insulator with less maintenance and no maintenance.

In the embodiment of the utility model, the long slideway 8 and the short slideway 16 of the slideway component are both in a [ -shaped structure, and a metal slideway insulating rigidity reinforcing plate 15 made of a high-rigidity composite material is arranged between the slideway component and the slideway mounting support 2 and between the slideway component and the insulating support 5, so that the rigidity of the slideway in the horizontal direction and the vertical direction is greatly improved.

In the embodiment of the utility model, the insulating rod 10, the structural members at the two ends, the contact wire clamp complex 3, the auxiliary insulating slideway 6, the long slideway supporting insulating rod 9 and the like are all assembled in advance in a factory, so that all the components are integrally fixed and supplied. On site, the wire clamps at two ends are connected with the contact wires, and then the metal slide ways are installed on the corresponding installation seats. The moment spanner is used for screwing a specially-made nut and then is screwed and riveted, so that a slideway reinforcing plate can be installed at last, and the metal slideway naturally forms a plane with the contact line. Before the installation of the metal slideway, the adjustable suspension strings of the carrier cable are installed, and finally the herringbone suspension strings are adjusted to enable the plane of the sectionalizer to be parallel to the plane of the steel rail. The longitudinal parallelism is adjusted by a hanger adjuster, and after the operation is skilled, the whole construction installation does not exceed 20 minutes.

Example two

Referring to FIGS. 1-2, a sectional insulator includes

In the embodiment of the utility model, a plane truss structure is formed among a plurality of insulating rods 10, so that the stability in operation is improved, and the outer sides of the long slideway supporting insulating rods 9 and the insulating rods 10 are treated by polytetrafluoroethylene coating, so that the weather resistance is improved and the self-cleaning performance is improved.

In the embodiment of the utility model, the auxiliary insulating slideway 6 and the long slideway supporting insulating rod 9 are connected by sharing one long slideway supporting rod mounting plate 11, so that the structure is simplified.

In the embodiment of the utility model, the contact wire clamp complex 3 adopts a lead-covered wire clamp, two pieces of the wire clamp are integrated and fastened in a segmented manner, the end part of the wire clamp is provided with a locking device, the tensile force is the breaking strength of the lead, each piece is independently added during processing, the clamping surface of the contact wire clamp is provided with fine teeth so as to reduce the contact resistance and not damage the lead, the last two pieces are combined and welded into a whole, the wire clamps at the two sides of each fastening bolt are cut into independent clamping pairs, the wire clamp is provided with a heavy-direction reverse-positive screw hole at the outlet of the lead, the locking screw is a cone, after the installation is finished, the locking screw is fastened and cut into the two sides of the conductor, the lead moves outwards to enable the clamping force to rise and achieve the constant loss, and the contact wire clamp complex 3 and the wire clamp and insulating support connecting piece 4 are connected by adopting a stress pin and a locating pin, so that the level of the wire clamp and the segmenter can be ensured, and the wire clamp and the segmenter can be fixed under the tensile state, The vertical displacement can not occur during the operation, and the positioning is ensured.

The working principle is as follows: the main insulation and two-end structural member and the wire clamp are assembled in advance in a factory, and the insulation auxiliary slideway, the main insulation rod slideway support and the like are assembled on a professional platform. All the parts are fixed and supplied as a whole; in the field, only the wire clamps at two ends are connected with the contact wires, then the metal slide way is installed on the corresponding installation seat, the specially-made nut is tightly screwed by the torque wrench and then is screwed and riveted, and the slide way reinforcing plate can be installed finally, and at the moment, the metal slide way naturally forms a plane with the contact wires; before the installation of the metal slideway, the adjustable suspension strings of the carrier cable are installed, and finally the herringbone suspension strings are adjusted to enable the plane of the sectionalizer to be parallel to the plane of the steel rail. The longitudinal parallelism is adjusted by a hanger adjuster, and after the operation is skilled, the whole construction installation does not exceed 20 minutes.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A section insulator, characterized in that: comprises that

The insulating rod component forms the main structure of the insulator and consists of insulating supports (5) positioned at two ends and insulating rods (10) which are connected between the two insulating supports (5) and distributed in a parallel shape;

the slideway components are arranged on the two sides of the insulating rod component respectively by being arranged on the insulating bracket (5), the slideway component on one side consists of a short slideway (16) positioned above and a long slideway (8) positioned below, and the slideway component on the other side consists of a long slideway (8) positioned above and a short slideway (16) positioned below;

the assembling part comprises a slideway mounting bracket (2) used for connecting one side end of the slideway component and a long slideway supporting insulating rod (9) used for connecting the other side end of the long slideway (8), the other end of the long slideway supporting insulating rod (9) is connected with an insulating structure assembling and mounting complex (7) arranged on an insulating rod (10) through a long slideway supporting rod mounting plate (11), and two adjacent insulating structure assembling and mounting complexes (7) are connected through an auxiliary insulating slideway (6);

the outer sides of the insulating supports (5) positioned at the two ends are assembled and connected with a contact wire clamp complex (3) connected with a contact wire (1) through a wire clamp and insulating support connecting piece (4), and the insulating supports (5) are formed by welding titanium alloy plates.

2. The section insulator of claim 1, wherein: the insulation rod assembly is characterized in that insulation rod joints (13) are arranged at two ends of the insulation rod (10) and assembled with the insulation support (5), the insulation rod joints are fixedly connected through fixing screw components (14), and shed-shaped external insulators (12) are arranged on the rod bodies at two ends of the insulation rod (10).

3. The section insulator of claim 1, wherein: and the auxiliary insulating slideway (6) and the insulating structure assembling and mounting complex (7) and the long slideway supporting insulating rod (9) and the long slideway supporting rod mounting plate (11) are assembled and connected by insulating connecting fasteners adopting a screw and riveting combination process.

4. The section insulator of claim 1, wherein: a plurality of constitute plane truss structure between insulator spindle (10), improve the stability in the operation, just long slide supports insulator spindle (9) and insulator spindle (10) outside and adopts the polytetrafluoroethylene coating to handle.

5. The section insulator of claim 1, wherein: the auxiliary insulating slide way (6) and the long slide way supporting insulating rod (9) share one long slide way supporting rod mounting plate (11) to be connected.

6. The section insulator of claim 1, wherein: the contact wire clamp complex (3) adopts a lead-coated wire clamp, and the contact wire clamp complex (3) and the wire clamp and insulating support connecting piece (4) are connected by double pins of a stressed pin and a positioning pin.