CN219385813U - Combined replaceable insulation isolation system - Google Patents
Combined replaceable insulation isolation system Download PDFInfo
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- CN219385813U CN219385813U CN202320684599.XU CN202320684599U CN219385813U CN 219385813 U CN219385813 U CN 219385813U CN 202320684599 U CN202320684599 U CN 202320684599U CN 219385813 U CN219385813 U CN 219385813U
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- isolation
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Abstract
The utility model discloses a combined replaceable insulation isolation system, which belongs to the field of urban rail transit, and comprises the following components: an insulating pad arranged under the steel rail; a spacer shoe located at an upper end of the insulating mat; two ends of the isolation boot are provided with snap springs, and the snap springs are used for fixing the isolation boot on the steel rail; insulating track gauge blocks distributed on two sides of the steel rail; the isolation shoe is positioned between the steel rail and the insulation gauge block and is matched with the insulation base plate and the insulation gauge block so as to insulate and isolate the steel rail from the fastener. According to the utility model, the creepage distance between the fastener and the steel rail is increased on the premise of not changing the constraint force of the existing fastener on the steel rail, so that the insulation performance of the fastener system is effectively improved; and the method has low cost and simple implementation, and can be used for newly-built circuits and existing line transformation.
Description
Technical Field
The utility model belongs to the field of urban rail transit, and particularly relates to a combined type replaceable insulation isolation system.
Background
For the existing wheel rail system for traction power supply by direct current, the running rail is used as a return line to be connected with the negative electrode of the substation, the running rail is connected with the track bed plate in a mode of being supported by the fastener, the fastener cannot be completely insulated due to pollution in the later use process, partial current flows out of the track bed, and then the current flows into the surrounding environment of the track to cause electric corrosion.
According to a large amount of measured data, the transition resistance value of the steel rail to the ground in part of the lines is far less than 15 Ω & km (scheme III) required by the technical Standard for protection against stray currents of subways (CJJ/T49-2020), and even more extreme lines are less than 1 Ω & km, so that the insulation performance of the lines is almost completely lost. The improvement of these cases includes two aspects, the introduction of measures to enhance the insulation of the track at the beginning of the design, and the research of replacement measures which are convenient to implement, on the other hand, for the already operated lines, must also be able to enhance the insulation properties of the track.
In the prior art, patent application No.: 202221343171 in the technical scheme of a steel rail insulating isolation system, the utility model relates to the technical field of steel rail equipment, and comprises an insulating isolation device arranged on a steel rail, wherein gauge blocks are arranged on two corresponding sides of the steel rail, a lower rail damping backing plate is arranged at the bottom of the steel rail, the insulating isolation device comprises an insulating layer coated on the outer wall of the lower part of the steel rail, the creepage gap between a fastener and the steel rail is increased through the arrangement of the steel rail insulating isolation system, and the insulating resistance (wet state) of the fastener system is effectively improved, so that the damage caused by stray current is avoided. The technology changes the constraint force of the fastener on the steel rail; as is known, the stainless steel wear-resistant plate is a low friction coefficient product, and the rail gauge block is buckled on the stainless steel surface to cause the constraint force of the fastener on the steel rail to be drastically reduced, so that the driving safety is affected; secondly, the relation between the fastener and the steel rail is changed from a gauge block-steel rail to a gauge block-stainless steel wear-resisting plate-insulating layer, the constraint state of the whole fastener on the steel rail is changed, and the constraint force is extremely unstable and reliable due to multi-layer contact.
Patent application number: 201910579038.1 in the technical scheme of a system for preventing and treating urban rail transit stray current corrosion influence, the system comprises a steel rail, fasteners, fastener rail lower base plates, screw spikes, a composite insulating layer, fastener elastic strips and a sewage drain, wherein the fasteners are pressed on two sides of the steel rail, the bottom of the steel rail is provided with the fastener rail lower base plates, the fasteners are fastened with the fastener rail lower base plates through the screw spikes, the fasteners are fastened with the steel rail through the fastener elastic strips, and the composite insulating layer is coated on the surfaces of rail waists and rail bottoms. But this technique has the following technical problems: firstly, changing the contact surface of the gauge block and the steel rail, and adding an insulating layer between the gauge block and the steel rail; in the actual use process, the insulation layer can fail to cause the integral insulation failure; secondly, cold bonding is adopted between the insulating layer and the steel rail, construction is responsible, and the later-stage service life is short.
Disclosure of Invention
In order to solve the problems, the utility model adopts the following technical scheme:
a modular replaceable insulation system comprising:
an insulating pad arranged under the steel rail;
a spacer shoe located at an upper end of the insulating mat;
two ends of the isolation boot are provided with snap springs, and the snap springs are used for fixing the isolation boot on a steel rail;
insulating track gauge blocks distributed on two sides of the steel rail;
the isolation shoe is positioned between the steel rail and the insulation gauge block and is matched with the insulation backing plate and the insulation gauge block so as to isolate the steel rail from the fastener in an insulating way;
the isolation boot is provided with a first hollowed-out part, and the first hollowed-out part is arranged at a contact position with the insulation track gauge block;
the isolation boot is provided with a plurality of continuous elastic bulges along the length upper direction, and the elastic bulges are positioned between the insulation gauge block and the steel rail and are matched with the insulation gauge block to form a prepressing type seal.
Further, the insulation gauge block comprises a sealing part and a buckling part which are integrally arranged, wherein the sealing part is matched with the elastic bulge corresponding to the first hollowed-out part to form a pre-pressing type seal; the buckling part is far away from one side of the sealing part, a bending structure is arranged at the matching position of the insulating base plate and the end part of the bending structure, a groove is formed in the position, along the width direction of the insulating base plate, the groove is located at one side, far away from the steel rail, of the insulating base plate, and the end part of the bending structure is matched with the groove of the insulating base plate so as to realize compression sealing between the insulating track gauge block and the insulating base plate.
Further, the insulating base plate comprises an elastic vibration reduction part and a sealing insulating part which are integrally arranged, and the elastic vibration reduction part is embedded into the first hollowed-out part of the isolation boot and is contacted with the steel rail; the sealing insulating part is matched with the end part of the bending structure so as to realize compression sealing between the insulating track gauge block and the insulating base plate.
Further, the bottom center department of keeping apart boots is provided with second fretwork portion, the circumference of second fretwork portion is provided with a plurality of even fastening pins that set up, be provided with a plurality of fastening holes on the sealed insulating part, a plurality of the fastening pin corresponds the cooperation setting with a plurality of fastening holes.
Further, the end part of the isolation boot is provided with a shaped umbrella-shaped waterproof eave, and the end part of the sealing part of the insulation gauge block, which is far away from one side of the buckling part, is abutted to the shaped umbrella-shaped waterproof eave and supports the shaped umbrella-shaped waterproof eave together with the top part of the clamp spring.
Further, the two ends of the isolation boot in the length direction are provided with snap spring mounting grooves along the width direction.
The beneficial effects are that:
the combined type replaceable insulation isolation system solves the problems in the prior art, increases the creepage distance between the fastener and the steel rail on the premise of not changing the constraint force of the existing fastener on the steel rail, and effectively improves the insulation performance of the fastener system; and the method has low cost and simple implementation, and can be used for newly-built circuits and existing line transformation.
Drawings
FIG. 1 is an elevational view of the overall structure of the modular replaceable insulation system of the present utility model;
fig. 2 is a partial enlarged view G in fig. 1;
FIG. 3 is a top view of the overall structure of the modular replaceable insulation system of the present utility model;
FIG. 4 is a schematic diagram of the mating installation of the spacer shoes, the insulation gauge blocks and the snap springs;
FIG. 5 is a cross-sectional view B-B of FIG. 4;
FIG. 6 is a cross-sectional view of C-C of FIG. 4;
FIG. 7 is a cross-sectional view of D-C of FIG. 4;
FIG. 8 is a front view of an insulation gage block;
FIG. 9 is a right side view of an insulating gage block;
FIG. 10 is a cross-sectional view E-E of FIG. 8;
FIG. 11 is a schematic view of an installation structure of an insulating mat;
FIG. 12 is a cross-sectional view F-F of FIG. 11;
FIG. 13 is a cross-sectional view H-H of FIG. 11;
FIG. 14 is a schematic view of an integrated insulating mat and spacer boot;
FIG. 15 is a schematic view of a snap connection of an insulating mat and a spacer boot;
FIG. 16 is a diagram of a snap spring mounting structure;
FIG. 17 is a schematic diagram of a snap spring structure;
1, an isolation boot; 1-1, a first hollowed-out part; 1-2, elastic bulge; 1-3, a second hollowed-out part; 1-4, fastening pins; 1-5, a clamp spring mounting groove; 1-6, umbrella-shaped waterproof eave; 2. an insulating gauge block; 2-1, a buckling part; 2-1-1, a buckling block; 2-2, a sealing part; 3. an insulating backing plate; 3-1, an elastic vibration reduction part; 3-2, sealing the insulating part; 3-2-1, a precompressed sealing structure; 3-2-2, grooves; 3-2-3, fastening holes; 4. and (5) clamping springs.
Detailed Description
Example 1
Referring to fig. 1-17, a modular replaceable insulation system comprising:
an insulating pad 3 arranged under the rail;
a spacer shoe 1 positioned at the upper end of the insulating mat 3;
two ends of the isolation boot 1 are provided with snap springs 4, and the snap springs 4 are used for fixing the isolation boot 1 on a steel rail;
and insulating gauge blocks 2 distributed on both sides of the rail;
the isolation shoe 1 is positioned between the steel rail and the insulation gauge block 2 and is matched with the insulation backing plate 3 and the insulation gauge block 2 so as to insulate and isolate the steel rail from the fastener.
In the embodiment, the isolation boot 1 is provided with a first hollowed-out part 1-1, the first hollowed-out part 1-1 is arranged at the contact part with the insulation gauge block 2, and the insulation gauge block 2 is buckled on the steel rail through the first hollowed-out part 1-1 so as to ensure the constraint force of the fastener on the steel rail.
In this embodiment, the spacer boot 1 is provided with a plurality of continuous elastic protrusions 1-2 along its length, and the plurality of elastic protrusions 1-2 are located between the insulation gauge block 2 and the rail and cooperate with the insulation gauge block 2 to form a pre-compression type seal.
The elastic bulges 1-2 of the isolation boot 1 are a plurality of continuous lines in the length direction, and a drainage groove is formed between the lines to directly drain water out of the insulation gauge block 2 area, so that even under the condition of pre-pressing failure, pollutants still cannot enter the first hollowed-out part 1-1 of the isolation boot 1, and insulation failure caused by the pollutants is avoided.
In the embodiment, the insulation track gauge block 2 comprises a sealing part 2-2 and a buckling part 2-1 which are integrally arranged, wherein the sealing part 2-2 is matched with an elastic bulge 1-2 corresponding to the first hollowed-out part 1-1 to form a seal in a pre-pressing mode; one side of the buckling part 2-1 far away from the sealing part 2-2 is provided with a bending structure, and the end part of the bending structure is matched with the insulating base plate 3 to realize compression sealing between the insulating track gauge block 2 and the insulating base plate 3.
The insulating gauge block 2 is provided with sealing parts 2-2 except the bottoms of the insulating base plates 3 under the rails, the sealing parts 2-2 and the elastic protrusions 1-2 of the isolation boots 1 are sealed in a prepressing mode, the sealing parts and the elastic protrusions are in a close contact state before the insulating gauge block 2 is stressed, and the sealing parts are compressed and sealed after the insulating gauge block 2 is stressed.
In the embodiment, the insulating base plate 3 comprises an elastic vibration reduction part 3-1 and a sealing insulating part 3-2 which are integrally arranged, and the elastic vibration reduction part 3-1 is embedded into the first hollowed part 1-1 of the isolation boot 1 and is in direct contact with a steel rail; the sealing insulation part 3-2 is matched with the end part of the bending structure to realize compression sealing between the insulation track gauge block 2 and the insulation backing plate 3.
More specifically, the insulating base plate 3 arranged under the rail is divided into an elastic vibration reduction part 3-1 and a sealing insulating part 3-2, wherein the elastic vibration reduction part 3-1 is embedded into the second hollowed part 1-3 of the isolation boot 1 to be in direct contact with the rail, so that the contact surface of the fastener and the rail is ensured not to be changed.
In this embodiment, the insulation shoe 1 is connected to the insulation pad 3 in a clamping manner, the sealing insulation portion 3-2 of the insulation pad 3 is provided with a fastening hole 3-2-3, and the fastening hole is matched with the fastening pin 1-4 of the insulation shoe 1 to assist in sealing glue to fasten the insulation pad 3 under the rail and the insulation shoe 1 into a whole, and this installation step can be completed in a factory.
More specifically, the second hollowed-out portion 1-3 is disposed at the bottom center of the isolation boot 1, a plurality of uniformly disposed fastening pins 1-4 are disposed in the circumferential direction of the second hollowed-out portion 1-3, a plurality of fastening holes 3-2-3 are disposed on the sealing insulation portion, and the plurality of fastening pins 1-4 are correspondingly matched with the plurality of fastening holes 3-2-3, that is, the fastening pins 1-4 are inserted into the fastening holes 3-2-3 to fasten the insulation pad 3 and the isolation boot 1 into a whole, referring to fig. 15.
In other embodiments, to ensure production and construction efficiency, the insulation shoe 1 is integrally formed with the insulation blanket 3, see fig. 14.
In other embodiments, the insulation shoe 1 is adhesively connected to the insulating mat 3.
In this embodiment, the two ends of the length direction of the isolation boot 1 are provided with snap spring mounting grooves 1-5 arranged along the width direction thereof.
Specifically, after the insulating base plate 3, the insulating boot 1 and the insulating gauge block 2 are installed, the clamp spring 4 is installed in the clamp spring installation groove 1-5, and the clamp spring 4 is integrally fixed, referring to fig. 16.
In this embodiment, a groove 3-2-2 is provided at the position where the insulating pad 3 is engaged with the end portion of the bent structure, and the groove 3-2-2 is provided along the width direction of the insulating pad 3 and is located at a side of the insulating pad 3 away from the rail.
The buckling part 2-1 is a buckling block 2-1-1, and the buckling block 2-1-1 has a bending structure.
By designing the grooves 3-2-2 with different sizes and shapes, the precompression of the bottom of the insulation gauge block 2 and the insulation backing plate 3 under the rail can be adjusted to form a precompression type sealing structure 3-2-1 so as to ensure that the insulation backing plate 3 under the rail cannot be extruded and failed.
Because the whole set of system relies on buckling of jump ring and fastener self to fix, all spare parts all can be changed when damaging appears, change convenient and fast.
Meanwhile, insulation upgrading can be completed by only replacing the gauge block and the rail pad plate of the original fastener on the existing line, so that the replacement cost is low and the implementation is strong.
In the embodiment, in order to ensure the vibration reduction effect, the hardness of the adopted elastomer is recommended to be 55-75 Shore A; the hardness of the elastomer used in the isolation boot 1 is recommended to be 70-80 Shore A in order to ensure the supporting strength of the isolation boot.
In the embodiment, the end part of the isolation boot 1 is provided with an umbrella-shaped waterproof eave 1-6, and the umbrella-shaped waterproof eave 1-6 extends to one side far away from the steel rail; the end part of the sealing part 2-2 of the insulating track gauge block 2, which is far away from the buckling part 2-1, is abutted against the umbrella-shaped waterproof eave 1-6, and supports the umbrella-shaped waterproof eave 1-6 together with the top part of the clamp spring 4.
The umbrella-shaped waterproof eave 1-6 on the upper portion of the isolation boot 1 is used for guaranteeing that the waterproof eave 1-6 cannot collapse in the using process, and the top of the sealing portion 2-2 of the insulation gauge block 2 and the top of the clamp spring 4 support the umbrella-shaped waterproof eave 1-6.
Example 2
The embodiment is a construction method of the combined replaceable insulation isolation system provided in embodiment 1, which specifically includes the following steps:
s10, part production
Production of the isolation shoe 1, the insulation gauge block 2 and the insulation blanket plate 3: the insulation track gauge block 2 adopts high-hardness high-insulation rubber, and the isolation boot 1 is purchased with high-elasticity high-insulation rubber; the insulating base plate 3 is a nylon piece;
s20, assembling parts
The isolation boot 1 and the insulating base plate 3 are assembled in a factory in a locking and cold bonding mode; after assembly, the steel wire is matched with the insulation gauge block 2 for delivery;
s30, on-site assembly
Assembling the combination of the isolation boot 1 and the insulating base plate 3 according to the normal steps; the installation method of the insulation gauge block 2 is the same as that of a common gauge block; after the whole fastener is assembled, the clamping springs 4 are arranged at the two ends of the isolation boot 1, and the installation is completed.
Example 3
This embodiment is identical to the construction method of the combined replaceable insulation and isolation system provided in embodiment 2 except for the following.
In this embodiment, in order to ensure production and construction efficiency, the isolation boot 1 and the insulation pad plate 3 are integrally formed, and are directly shipped together with the insulation gauge block 2, so that the assembly of the isolation boot 1 and the insulation pad plate 3 is not required to be assembled on site, and production and construction efficiency is improved.
The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the technical scope of the present utility model, so any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical principles of the present utility model still fall within the scope of the technical solutions of the present utility model.
Claims (6)
1. A modular replaceable insulation system comprising:
an insulating pad arranged under the steel rail;
a spacer shoe located at an upper end of the insulating mat;
two ends of the isolation boot are provided with snap springs, and the snap springs are used for fixing the isolation boot on a steel rail;
insulating track gauge blocks distributed on two sides of the steel rail;
the isolation shoe is positioned between the steel rail and the insulation gauge block and is matched with the insulation backing plate and the insulation gauge block so as to isolate the steel rail from the fastener in an insulating way;
the isolation boot is provided with a first hollowed-out part, and the first hollowed-out part is arranged at a contact position with the insulation track gauge block;
the isolation boot is provided with a plurality of continuous elastic bulges along the length upper direction, and the elastic bulges are positioned between the insulation gauge block and the steel rail and are matched with the insulation gauge block to form a prepressing type seal.
2. The modular replaceable insulation system of claim 1, wherein the insulation gage block comprises a seal portion and a swage portion integrally disposed, wherein the seal portion cooperates with the resilient protrusion of the first hollowed out portion to form a pre-compression type seal; the buckling part is far away from one side of the sealing part, a bending structure is arranged at the matching position of the insulating base plate and the end part of the bending structure, a groove is formed in the position, along the width direction of the insulating base plate, the groove is located at one side, far away from the steel rail, of the insulating base plate, and the end part of the bending structure is matched with the groove of the insulating base plate so as to realize compression sealing between the insulating track gauge block and the insulating base plate.
3. The modular replaceable insulating isolation system of claim 2 wherein the insulating pad includes an integrally disposed elastomeric vibration dampening portion and a sealed insulating portion, the elastomeric vibration dampening portion being embedded in the first hollowed out portion of the isolation boot and contacting the rail; the sealing insulating part is matched with the end part of the bending structure so as to realize compression sealing between the insulating track gauge block and the insulating base plate.
4. The combined type replaceable insulation isolation system according to claim 3, wherein a second hollowed-out portion is arranged at the center of the bottom of the isolation boot, a plurality of uniformly arranged fastening pins are arranged in the circumferential direction of the second hollowed-out portion, a plurality of fastening holes are formed in the sealed insulation portion, and a plurality of fastening pins are correspondingly matched with the fastening holes.
5. The modular replaceable insulation system of claim 4, wherein the end of the insulation boot is provided with a umbrella-shaped waterproof eave, and the end of the sealing portion of the insulation gauge block on the side away from the buckling portion abuts the umbrella-shaped waterproof eave and supports the umbrella-shaped waterproof eave with the top of the snap spring.
6. The modular replaceable insulation system of claim 1, wherein the insulation boots are provided with snap spring mounting slots along their width at both ends in the length direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320684599.XU CN219385813U (en) | 2023-03-31 | 2023-03-31 | Combined replaceable insulation isolation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320684599.XU CN219385813U (en) | 2023-03-31 | 2023-03-31 | Combined replaceable insulation isolation system |
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| Publication Number | Publication Date |
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| CN219385813U true CN219385813U (en) | 2023-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202320684599.XU Active CN219385813U (en) | 2023-03-31 | 2023-03-31 | Combined replaceable insulation isolation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116623477A (en) * | 2023-03-31 | 2023-08-22 | 北京首铁创联科技有限责任公司 | Combined replaceable insulation isolation system |
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2023
- 2023-03-31 CN CN202320684599.XU patent/CN219385813U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116623477A (en) * | 2023-03-31 | 2023-08-22 | 北京首铁创联科技有限责任公司 | Combined replaceable insulation isolation system |
| CN116623477B (en) * | 2023-03-31 | 2023-11-24 | 北京首铁创联科技有限责任公司 | Combined replaceable insulation isolation system |
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