CN202626772U - On-site cemented insulated joint for steel rail - Google Patents
On-site cemented insulated joint for steel rail Download PDFInfo
- Publication number
- CN202626772U CN202626772U CN 201220251068 CN201220251068U CN202626772U CN 202626772 U CN202626772 U CN 202626772U CN 201220251068 CN201220251068 CN 201220251068 CN 201220251068 U CN201220251068 U CN 201220251068U CN 202626772 U CN202626772 U CN 202626772U
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- Prior art keywords
- joint
- rail
- steel rail
- cleat insulator
- cemented
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- Expired - Fee Related
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Abstract
The utility model discloses an on-site cemented insulated joint for a steel rail. The inner side of an on-site cemented insulated cleat for the steel rail is also processed to form a slope same as the inner side of the cavity of the steel rail, is fastened by using a high-strength hexagon bolt and a nut and is cemented on site so that the stretching motion between the steel rail and the cleat is stopped, and the steel rail is effectively reinforced; the cemented insulated cleat is made of high-quality steel material so that the tensile strength is enhanced; phenomena such as breakage, cement failure, steel rail opening and the like are avoided so that the smoothness, comfort level and safety in the running of a train can be improved, the continuity and integrity of a track are enhanced, the weak link of a common insulated joint is eliminated, and the requirement of a seamless track developing towards an overlong seamless track is met; in addition, the on-site cemented insulated joint for the steel rail also has rigidity similar to that of a steel rail matrix, so that the requirements for temperature stress change of a railway track and powerful impact force generated in the running process of the train can be sufficiently met.
Description
Technical field
The utility model relates to railway territory, relates in particular to a kind of rail joint.
Background technology
Between the rail of two fixed length; Connect to form continuous path with clamping plate and be called rail joint, normally realize that through clamping plate are installed between rail on the track and the rail joint dynamic action between wheel and rail is big; The maintenance workload is big, and joint is one of weak link of track structure.The rail joint that adopts at present is common insulating joint clamping plate type rail joint; Its rigidity and tensile strength are relatively poor, fracture, rail occur easily and phenomenon such as draw back, and occur the shrinkage problems of expanding with heat and contract with cold and causing easily; Cause many difficulties for railway construction and maintenance, increased the railway cost.
The utility model content
In order to overcome the problems referred to above that traditional rail joint exists, the utility model provides a kind of intensity and the higher on-the-spot insulating joint that glueds joint of overlength gapless rail of tensile strength.
The utility model for realizing the technical scheme that above-mentioned purpose adopted is: the on-the-spot insulating joint that glueds joint of rail; The rail both sides are installed and are gluedd joint cleat insulator; It is identical with rail rail chamber medial surface gradient to glued joint the cleat insulator medial surface; Glued joint the cleat insulator medial surface and embed inboard, rail rail chamber and bonding through adhesive layer, glued joint cleat insulator and be provided with bolt hole, rail is provided with and glueds joint the corresponding bolt hole of cleat insulator bolt hole; Glued joint cleat insulator and be fixedly connected through screw bolt and nut, put into insulating end in the two rails gap of butt joint with rail.
Said bolt is outside installs insulation sleeve with splicing cleat insulator contact surface.
Between said nut and the splicing cleat insulator packing ring is installed.
Said splicing cleat insulator by clamping plate, troughing plate and insulation offset plate through the sinter structure that is integrated.
The on-the-spot insulating joint that glueds joint of the rail of the utility model; The on-the-spot cleat insulator medial surface that glueds joint of rail also is processed into and inboard identical inclined-plane, rail rail chamber, uses high strength hex bolts and nut fastening then, and be aided with on-the-spot glue bond; Stop the telescopic movable between rail and clamping plate; Realize effective reinforcing of rail, and glued joint cleat insulator and use the high-quality steel, strengthened tensile strength; Avoided fracture, come unglued, phenomenon such as rail draws back, thereby can improve stationarity and the comfort level and the safety of train operation.In addition, steel rail welding line glueds joint clamping plate is convenient to transportation, and easy construction has reduced cost, for a large amount of financial resources and manpower have been saved in railway construction and maintenance.Length has increased the contact area between rail and the clamping plate greater than the length of common cleat insulator, can effectively resist the shrinkage phenomenon that rail causes because of expanding with heat and contract with cold.The on-the-spot splicing of rail insulating joint has been strengthened the continuity and the globality of circuit; Eliminated the weak link of common insulating joint; Satisfy the demand of gapless track to the development of overlength gapless track; And it also has the rigidity close with the rail parent, the thermal stresses that can fully satisfy railway track change and train operation in the powerful impact force that produced.
Description of drawings
Fig. 1 is the on-the-spot insulating joint side cutaway view that glueds joint of the rail of the utility model.
Fig. 2 is the on-the-spot insulating joint overall structure figure that glueds joint of the rail of the utility model.
The specific embodiment
The on-the-spot insulating joint structure of glueing joint of the rail of the utility model is as depicted in figs. 1 and 2, and the on-the-spot insulating joint that glueds joint is made up of splicing cleat insulator 7, high-strength bolt 5, high-strength locknut 4, high-strength plain steel washer 3, insulation sleeve 6, insulating end, on-the-spot glue.Rail 1 both sides are installed and are gluedd joint cleat insulator 7; It is identical with rail 1 rail chamber medial surface gradient to glued joint cleat insulator 7 medial surfaces; Glued joint cleat insulator 7 medial surfaces and embed inboard, rail 1 rail chamber and bonding through adhesive layer 2; Glued joint cleat insulator 7 and be provided with bolt hole, rail 1 is provided with and glueds joint the corresponding bolt hole of cleat insulator 7 bolts hole, glueds joint cleat insulator 7 and is fixedly connected with nut 4 through bolt 5 with rail 1; Put into insulating end in two rails 1 gap of butt joint, bolt 5 outside and splicing cleat insulator 7 contact surfaces installation insulation sleeve 6.Between nut 4 and the splicing cleat insulator 7 packing ring 3 is installed.
Rail is on-the-spot to be gluedd joint insulating joint and is meant and sticks with glue agent at the construction field (site) will to glued joint cleat insulator 7 bonding with rail 1, and adopts the fastening rail insulated joint of high-strength bolt 5 simultaneously, is called " the on-the-spot splicing of rail insulating joint ".Splicing cleat insulator 7 is meant and in factory, adopts the adhesive technology of heating, pressurize, and clamping plate, troughing plate, insulation channel plate are combined as a whole, and has the clamping plate of certain insulating properties, is called " splicing cleat insulator ".Rail has with on-the-spot cleat insulator 1 specification of glueing joint: 50kg/m, 60kg/m, 75kg/m.Glueing joint cleat insulator 7 is integrated through sinter by clamping plate, troughing plate and insulation offset plate.Clamping plate are by 55 or be superior to other high-quality steel of 55 and make.Troughing plate adopts the quality steel plate compacting.The insulation offset plate adopts high strength thermosetting type sealing compound and alkali-free glass fiber cloth to be compositely suppressed to form.
On-the-spot performance of glueing joint insulating joint is: block shear test should satisfy the regulation of table 1:
Table 1
Electrical insulation capability should satisfy the regulation of table 2:
Table 2
| Strong attitude | Resistance value |
| Dry state | ≥10MΩ |
| Dampness | ≥1000Ω |
Regulation among the TB/T 2975 is pressed in fatigue test, reaches 2 * 10
6Inferior.
The performance of " the on-the-spot insulating joint that glueds joint " after the performance of splicing cleat insulator 7 should guarantee to install, its performance should reach: clamping plate mechanical property after heat treatment should meet the regulation of table 3:
Table 3
The resistance that glueds joint cleat insulator should satisfy the regulation of table 4:
Table 4
| State | Resistance value |
| Dry state | ≥20MΩ |
| Dampness | ≥1000Ω |
Rail on-the-spot splicing insulating joint and common rail insulated joint performance comparison have the following advantages:
(1) intensity is calculated: use clamping plate to be example with the 60kg/m rail, the common cleat insulator cross sectional area of 60kg/m is 31cm
2, the 60kg/m rail is with the clamping plate body cross-section area 52cm that glueds joint cleat insulator
2, the ratio (52/31) of both cross sectional areas is 1.6 times.So from the ratio of section area, intensity can meet and exceed common cleat insulator.
(2) material calculates: glued joint the cleat insulator materials used and be 55 steel or be superior to other high-quality steel of 55, after heat treatment tensile strength can reach about 1000Mpa above 900 Mpa, multiply by cross-sectional area 52cm
2, monolithic glueds joint cleat insulator bulk material tension can reach 494 tons, is the B7 steel and rail is selected for use with common insulating joint splint material, by reaching after the standard heat treatment about 800-900Mpa, multiply by actual clamping plate cross-sectional area 31cm
2, monolithic splint material tension can only reach 267 tons, and the monolithic clamping plate differ 227 tons, so analyze from material, also are better than common rail and use the insulating joint clamping plate.
(3) rail is on-the-spot glueds joint the last downforce of insulating joint in will bearing the locomotive operation process; Also to resist the rail that produces because of the climate change lateral force of expanding with heat and contract with cold; Therefore glued joint the length of cleat insulator length greater than common cleat insulator; Increase the contact area between rail and the clamping plate, can effectively resist the shrinkage phenomenon that rail causes because of expanding with heat and contract with cold.
(4) be used for the on-the-spot bonding adhesive that glueds joint for two component A, B glue, after on-the-spot applying glue is bonding, let on-the-spot the splicing between cleat insulator and rail form sealing state, stop the insulating properties that rainwater, field trash etc. get into interlayer thereby influence cleat insulator.And the cutting performance of bonding adhesive has increased the tensile force of clamping plate and rail also up to more than the 20Mpa.
The erection procedure of on-the-spot splicing insulating joint is following:
(1) preceding inspection is installed and glueds joint the cleat insulator resistance value, must can use greater than 20M Ω.
(2) answer the circuit in the 20m scope of butt joint front and back to rebuild before the construction, reach line maintenance operation acceptance criteria.Rail, sleeper and fastener (the joint fastener must be adopted in the joint) are in good condition, and sleeper pitch is up to specification, does not have the sky boatswain chair.
(3) when construction should be in that (northern hot weather construction temperature preferably be higher than 25 ℃ greater than 0 ℃; Avoid in the winter time because of limit excessive temperature differentials, rail produces stress and concentrates, and causes clamping plate to draw back phenomenon; Seriously can cause the rail fracture accident), relative humidity is less than 60% clean environment; Should avoid descending construction at the weather of rain, mist, snow, dust storm, when insulating joint was gluedd joint at the scene, the rail temperature should not be lower than 10 ℃.
(4) rail joint of butt joint is ground one's teeth and is not more than 1mm, and rail end deflection is not more than 1mm, and bolt hole position and space deviations are not more than 1mm.Rail is holed, and boring back is measured with ruler, defectively needs redrilling, and the boring back is removed iron and cut.The end of rail of butt joint is used cusped edge and the burr that sander is removed protrusion; Numeral, letter and the surface blemishes of any convexity in two sides splicing scope all should polish, and glued joint clamping plate and polish the horizontal matsurface perpendicular to the clamping plate length direction with angle grinding machine sheet.
(5) speed u≤200km/h circuit, the distance of glueing joint insulating joint and welding point is not less than 3.0m; For speed u>=200km/h circuit, the distance of glueing joint insulating joint and welding point is not less than 6.0m.
(6) glued joint cleat insulator 7 and before assembling, must carry out trial assembly and join, six roots of sensation high-strength bolt 5 is put insulation sleeve 6, all in the inserting bolt holes, reaching every bolt 5 should be able to smooth and easyly insert, and not handy hammering is gone into during trial assembly, in case insulation sleeve 6 breakages.Inspection confirms that itself and the bolt hole position on the rail 1 should be consistent, and spacing and aperture are correct, can insert smoothly when assembling so that be with the high-strength bolt 5 of insulation sleeve 6, then clamping plate is unloaded.
(7) will meet the rail of splicing; With sander it being gluedd joint the surface polishes; Until manifesting the steel true qualities, rail 1 glueds joint end and bolt hole is answered 45 ° of chamfered edge 1mm～2mm, chamferings, removes the dust that is attached to the surface with hairbrush then; And, reach surface cleaning with the greasy dirt and the foreign material of acetone or carbon tetrachloride clean surface.The surface of having cleaned should not contact any dirt except that smearing bonding adhesive, in order to avoid influence adhesive property.
(8) in the two rails gap of butt joint, put into insulating end, and it is clamped, it is not come off.Must not leave the slit between insulating end and rail, otherwise the rainwater entering can cause failure of insulation.
(9) mix A and two kinds of bonding adhesive of B to be incorporated in 1 minute to stir according to the bonding adhesive instructions for use and (should use immediately after the stirring; During like construction under violent sunlight; On-the-spot bonding adhesive should be placed in the cool; And stir in the cool), reach solid colour after, be fast, all it is spread upon glued joint cleat insulator and glued joint the surface accordingly: reach at the waist of the rail web of the rail and the circular arc that is connected up and down with the web of the rail, cleat insulator and to connect the circular arc coating layer thickness up and down about about 2mm with rail; Rail 1 and cleat insulator about in the of 7 1:3 contact surface coating layer thickness do not limit, but must guarantee to be coated onto.
The special-purpose hanger of splicing cleat insulator 7 usefulness that (10) will scribble bonding adhesive hooks two bolts hole wherein; Attach it on the web of the rail of rail; The bolt intersection that is with insulation sleeve is penetrated bolt hole, forbid with beating bolt, a plain washer 3 respectively is inserted at the bolt two ends; The nut 4 (note face greatly in) of screwing on is with quick-moving fast fastening nut.After confirming that installation is errorless, press (3,4 with the ratchet spanner earlier in the both sides of rail respectively by at least 3 site operation personnel; 5,2; 1, order 6) is fastening nut 4 simultaneously, and knocks the clamping plate afterbody with hand hammer, makes clamping plate in place; Then with the long torque wrench of 1500Nm; Press same order fastening nut successively by the torque value of setting, (sequence number of bolt: towards rail, sort from left to right) with the operator.60kg/m track bolt moment of torsion should reach 1200Nm (cold district can increase to 1300 Nm), and 50kg/m track bolt moment of torsion should reach 1100 Nm.
(11) should be from A glue and B glue mixing to the 5 fastening times that finish of bolt above 7 minutes.Bolt 5 fastening back 5 minutes knocks gently with hand hammer and to glued joint the cleat insulator both sides, and then answers nutting 2～3 times with long torque wrench, and moment of torsion should reach above-mentioned standard value.
(12) remove cull, make the gluded joint outward appearance neat and artistic.Install after 1 hour and can be open to traffic, reached suitable strength in 24 hours.
The on-the-spot splicing of the rail of the utility model insulating joint has been strengthened the continuity and the globality of circuit; Eliminated the weak link of common insulating joint, satisfy the demand of gapless track, and it has also had the rigidity close with the rail parent to the development of overlength gapless track; The thermal stresses that can fully satisfy railway track change and train operation in the powerful impact force that produced; Glued joint cleat insulator and be convenient to transportation, easy construction reduces cost.
Claims (4)
1. insulating joint is gluedd joint at the rail scene; It is characterized in that: rail (1) both sides are installed and are gluedd joint cleat insulator (7); It is identical with rail (1) rail chamber medial surface gradient to glued joint cleat insulator (7) medial surface; Glued joint cleat insulator (7) medial surface and embed inboard, rail (1) rail chamber and bonding through adhesive layer (2), glued joint cleat insulator (7) and be provided with bolt hole, rail (1) is provided with and glueds joint the corresponding bolt hole of cleat insulator (7) bolt hole; Glued joint cleat insulator (7) and be fixedly connected with nut (4) through bolt (5) with rail (1), the two rails of butt joint (1) is put into insulating end in the gap.
2. the on-the-spot insulating joint that glueds joint of rail according to claim 1 is characterized in that: said bolt (5) is outside installs insulation sleeve (6) with splicing cleat insulator (7) contact surface.
3. the on-the-spot insulating joint that glueds joint of rail according to claim 1 is characterized in that: between said nut (4) and the splicing cleat insulator (7) packing ring (3) is installed.
4. the on-the-spot insulating joint that glueds joint of rail according to claim 1 is characterized in that: said splicing cleat insulator (7) by clamping plate, troughing plate and insulation offset plate through the sinter structure that is integrated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220251068 CN202626772U (en) | 2012-05-31 | 2012-05-31 | On-site cemented insulated joint for steel rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220251068 CN202626772U (en) | 2012-05-31 | 2012-05-31 | On-site cemented insulated joint for steel rail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202626772U true CN202626772U (en) | 2012-12-26 |
Family
ID=47379984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220251068 Expired - Fee Related CN202626772U (en) | 2012-05-31 | 2012-05-31 | On-site cemented insulated joint for steel rail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202626772U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103774508A (en) * | 2014-02-19 | 2014-05-07 | 大连铁联铁路器材制造有限公司 | Rail welding seam glued joint and repairing method |
| CN105064145A (en) * | 2015-08-14 | 2015-11-18 | 中国铁建重工集团有限公司 | Steel rail cementing insulating joint |
| CN109355980A (en) * | 2018-10-12 | 2019-02-19 | 大连铁联铁路器材制造有限公司 | Rail insulating joint |
| CN109958007A (en) * | 2019-03-25 | 2019-07-02 | 铁科（北京）轨道装备技术有限公司 | A kind of installation method and insulating joint structure of rail insulating joint |
| CN111851167A (en) * | 2020-07-27 | 2020-10-30 | 卡法时(江苏)新材料有限公司 | Adaptable rail gap changing combined rail end insulator |
-
2012
- 2012-05-31 CN CN 201220251068 patent/CN202626772U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103774508A (en) * | 2014-02-19 | 2014-05-07 | 大连铁联铁路器材制造有限公司 | Rail welding seam glued joint and repairing method |
| CN105064145A (en) * | 2015-08-14 | 2015-11-18 | 中国铁建重工集团有限公司 | Steel rail cementing insulating joint |
| CN109355980A (en) * | 2018-10-12 | 2019-02-19 | 大连铁联铁路器材制造有限公司 | Rail insulating joint |
| CN109958007A (en) * | 2019-03-25 | 2019-07-02 | 铁科（北京）轨道装备技术有限公司 | A kind of installation method and insulating joint structure of rail insulating joint |
| CN109958007B (en) * | 2019-03-25 | 2024-04-26 | 铁科（北京）轨道装备技术有限公司 | Method for installing rail glue joint insulating joint and insulating joint structure |
| CN111851167A (en) * | 2020-07-27 | 2020-10-30 | 卡法时(江苏)新材料有限公司 | Adaptable rail gap changing combined rail end insulator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121226 Termination date: 20160531 |