CN108978361A - A kind of 400 kilometers of movable-point crossing wing rails of speed per hour and processing method - Google Patents
A kind of 400 kilometers of movable-point crossing wing rails of speed per hour and processing method Download PDFInfo
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- CN108978361A CN108978361A CN201810735243.8A CN201810735243A CN108978361A CN 108978361 A CN108978361 A CN 108978361A CN 201810735243 A CN201810735243 A CN 201810735243A CN 108978361 A CN108978361 A CN 108978361A
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- 238000003672 processing method Methods 0.000 title claims abstract description 9
- 230000003247 decreasing effect Effects 0.000 claims abstract description 17
- 238000003801 milling Methods 0.000 claims abstract description 16
- 238000010276 construction Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000009527 percussion Methods 0.000 description 2
- 239000011295 pitch Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
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- 238000004364 calculation method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- 230000035939 shock Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B7/00—Switches; Crossings
- E01B7/10—Frogs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
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- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Escalators And Moving Walkways (AREA)
Abstract
A kind of 400 kilometers of movable-point crossing wing rails of speed per hour and processing method, the wing rail rail top edge line direction is the first inclined-plane being gradually lifted to heart rail rail top 20mm section part from the practical throat of railway frog, to heart rail rail top 30mm section part it is the second inclined-plane being gradually lifted from the 20mm section part of heart rail rail top, to heart rail rail top 50mm section part is the third inclined-plane gradually decreased from the 30mm section part of heart rail rail top；The wing rail rail roof pendant straight line path direction is the 4th inclined-plane that inside is low, outside is high to heart rail rail top 50mm section part from the practical throat of railway frog.Processing method: Milling Process is carried out to the rail top of heart rail rail top 50mm section part from toe-end to the wing rail by CNC milling machine, forms four inclined-planes.The present invention is by reducing the vertical irregularity in railway frog area and wheel-rail impact power, reducing railway frog area off-load rate and derailment coefficients to wing rail rail roof construction innovative design, the comfort that the security reliability and passenger for improving track switch are taken.
Description
Technical field
The invention belongs to railway switch technical fields, and in particular to a kind of 400 kilometers of movable-point crossing wing rails of speed per hour and
Processing method.
Background technique
Currently, movable-point crossing wing rail and the working edge gauge line of heart rail are continuous, heart rail can be engaged in converting system by electricity
System pulls conversion, realize the straight stock of track switch, side stock it is open-minded, eliminate stationarity railway frog harmful sky because caused by interrupting gauge line
Between, trouble is crossed for train high speed, and operation condition is provided.But in railway frog area, one tyre tread of vehicle wheel pair operates in guide rail rail top, and one
Tyre tread operates in wing rail or the rail top mutually closely connected with heart rail, in order to allow train wheel load gradually to transit to heart rail rail from wing rail
Certain rail top decreasing value is arranged in top, light section section of the heart rail at its tip~carry completely, so as to wheel tread gradually from
Wing rail, which is transferred to heart rail, has sufficient intensity deposit compared with big cross section, avoid the heart rail light section rail top due to directly bearing train wheel load by
Conquassation causes Exploration on Train Operation Safety.
The heart rail of existing movable-point crossing generally undertakes the load of train since 20mm section, in heart rail 40mm or
It is carried completely when 50mm section, only when rail top when section sufficiently large (40mm or 50mm section), heart rail rail heights of roofs just reaches
Highest can undertake the load of train completely.Heart rail rail withstands on the mesh that light section section setting decreasing value plays protection itself
, but because of the decreasing value on heart rail rail top, during wheel is transferred to heart rail rail top from wing rail, Railway wheelset is in heart rail side
Wheel tread it is hanging, cause wheel tread and shock that heart rail rail top reels, main cause be assembled with heart rail it is closely connected
Wing rail be relatively distant from wheel rim.Increase it follows that heart rail carries pervious light section completely because rail top is equipped with decreasing value
The big change rate of railway frog part vertical structure irregularity, wheel-rail impact effect is more violent, shortens heart rail, wing rail service life,
Increase railway frog area vertical impact power, off-load rate and derailment coefficients.
Existing movable-point crossing has the section of decreasing value not take to slow down the measure of wheel-rail impact power on heart rail rail top, i.e.,
When centripetal from the wing rail rail transition of wheel load, only local tyre tread operates in wing rail rail top to the wheel of heart trackside, relies primarily on the another of wheel pair
One wheel ran trouble on guide rail.Wheel tread is the inclined-plane for having certain taper, and its tyre tread gradient is got over further away from wheel rim
Greatly, it follows that having a section of decreasing value on heart rail rail top, wheel tread rail brace in order to obtain, hanging wheel will
It rotates and declines around axle, so that tyre tread is supported by wing rail, but thus cause wheel tread to be answered back to heart rail rail and hit, increase rut
Pitch the impact force and vertical irregularity of area's wheel track, off-load rate and derailment coefficients when train switch crossing speed is lower, under percussion
It can satisfy index request, the comfort that safety hazard and passenger will not be caused to take.
When train directly reaches 400km/h to highest switch crossing speed, by 400 kilometers of 1520mm gauge P65 steel of speed per hour
No. 25 track switches of rail have carried out vehicle-railway points system dynamic response theory analysis, and calculated result see the table below:
400 kilometers of the speed per hour track switch coupled system dynamic response calculated result of 1520mm gauge P65 rail 25
Although by upper table calculated result it is found that the movable-point crossing routinely designed its derailment coefficients, rate of wheel load reduction,
Body oscillating acceleration etc. meets safety index requirement, but railway frog head of district's heart rail vertical wheel rail force is larger, increases railway frog area wheel track
Impact force, it is necessary to take measures, to reduce the wheel-rail impact power of movable-point crossing.
The high-speed switch of 400 kilometers of grades of speed per hour is a blank in the world at present, needs to go deep into railway points system
Research, breaks traditional design theory, is attached most importance in the wheel rail relation design at railway frog position with eliminating vertical structure irregularity, is mentioned
High track switch integral level.
Summary of the invention
The purpose of the present invention is to provide a kind of 400 kilometers of movable-point crossing wing rails of speed per hour and processing methods, by right
Wing rail rail roof construction innovative design reduces the vertical irregularity in railway frog area and wheel-rail impact power, reduces railway frog area off-load rate and derailing
Coefficient, the comfort that the security reliability and passenger for improving track switch are taken.
Mentality of designing of the invention: movable-point crossing is to guarantee that train wheel load is gradually transferred to heart rail from wing rail, in the heart
There are certain decreasing value in rail rail top light section region, so that the change rate of railway frog area vertical structure irregularity is larger, wheel
Rail percussion is more violent.There is wheel track existing for the light section section of decreasing value mutual on heart rail rail top for movable-point crossing
Impact Problems are engaged relationship according to wheel tread and rail, the wing rail rail that will have decreasing value section to assemble with heart rail rail top
Top is lifted and is designed as inclined-plane, to ensure that train obtains the support on wing rail rail top by taper wheel tread outside when railway frog area,
It avoids wheel inside (being close to central lines of track) tyre tread from answering back to heart rail rail to hit, is trip to slow down the vertical irregularity in railway frog area
Visitor provides comfortable seating environment.
Heart rail is usually carried since 20mm section, is carried completely in 40mm section or 50mm section, complete loaded section
It is that decreasing value terminates section.Wheel rail relation when wing rail rail of the present invention top bevel structure is assembly closely connected with heart rail by simulation wing rail
Design, i.e., under wing rail and heart rail close-fitting state, by wheel inside tyre tread respectively with the practical tip section of heart rail, 20mm section,
When the highest point contact of 30mm section, 40mm section or 50mm section, i.e., when tyre tread and heart rail rail top highest point are point contact, the wing
Rail gives the support of a length of 10mm of lateral wheel tyre tread respectively to design.
Technical solution of the invention: usual wheel tread is the inclined-plane for having certain taper, and the contact with rail is
One oval spot, long axis about 10mm, i.e. rail top of steel rail provide the face support of length about 10mm for tyre tread.In order to slow down railway frog wheel track
Impact force, when the wing rail rail roof construction with the closely connected assembly of heart rail decreasing value section is by wheel tread and heart rail highest point contact,
Wing rail rail top provides the Wheel Rail Contact spot design that length is 10mm support for wheel tread.In addition, because wheel tread is inclined-plane,
So the wing rail rail top contacted with wheel tread also must be designed to the inclined-plane of identical taper.
The specific structure scheme of wing rail of the present invention are as follows: the wing rail rail top edge line direction is from the practical throat of railway frog
Rising to heart rail rail top 20mm section part is the first inclined-plane being gradually lifted, and wing rail rail withstands on the lifting value of the practical throat of railway frog
For 0.0mm, on heart rail rail top, the lifting value of 20mm section part is 0.5-1.2mm；The wing rail rail top edge line direction is from heart rail
It is the second inclined-plane being gradually lifted that rail top 20mm section part, which rises to heart rail rail top 30mm section part, and wing rail rail withstands on heart rail rail top
The lifting value of 30mm section part is 1.8-2.5mm；The wing rail rail top edge line direction from the 30mm section part of heart rail rail top to
Heart rail rail top 50mm section part is the third inclined-plane gradually decreased, and wing rail rail withstands on the lifting value of heart rail rail top 50mm section part
For 0.0mm；The wing rail rail roof pendant straight line path direction is inside to heart rail rail top 50mm section part from the practical throat of railway frog
4th inclined-plane low, outside is high, and the 4th inclined-plane taper is consistent with the taper on the outside of wheel tread, makes wing rail rail top wheel pedal
Face at least provides the support of length 10mm.
It advanced optimizes, the lifting value that the wing rail rail withstands on heart rail rail top 20mm section part is 0.7mm；The wing rail rail
The lifting value for withstanding on heart rail rail top 30mm section part is 2.2mm.
Wing rail of the present invention is used for 400 kilometers of higher track switches of speed of speed per hour, it is contemplated that wing rail is in use state by certainly
The influence of right timeliness and temperature change is difficult to obtain wing rail of the present invention by traditional bending up and down and torsion processing technology
Rail roof construction, and wing rail its structure size of traditional handicraft processing more or less will appear rebound, influence the structure of wing rail
Precision.The processing method of wing rail of the present invention is: practical to railway frog from toe-end to the wing rail by CNC milling machine first
The rail top of throat section reduces the section wing rail height by 1.8-2.5mm by Milling Process, then to the wing rail from rut
It pitches practical throat to rise to the rail top of heart rail rail top 50mm section part progress Milling Process, forms first inclined-plane, second tiltedly
Face, third inclined-plane；Milling Process finally is carried out to the wing rail rail top at the first inclined-plane, the second inclined-plane and third inclined-plane again, makes the wing
Rail rail withstands on and forms the 4th inclined-plane that inside is low, outside is high at the first inclined-plane, the second inclined-plane and third inclined-plane, and the 4th inclined-plane is bored
It spends consistent with the taper on the outside of wheel tread.
The present invention has the advantage that and effect:
1, the vertical irregularity in railway frog area and wheel-rail impact power are reduced.
2, reduce railway frog area off-load rate and derailment coefficients.
3, the comfort that the security reliability and passenger for improving track switch are taken.
4, the present invention processes wing rail rail top using machining mode under the premise of not changing existing wing rail line style
Four inclined-planes needed for being formed, not only manufacturing cost is low, and can guarantee the contact precision at Wheel Rail Contact position.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of an embodiment of the present invention,
Fig. 2 is Fig. 1 partial enlargement diagram,
Fig. 3 is the inclined-plane Fig. 2 position wing rail sectional schematic diagram,
Fig. 4 is wheel rail relation schematic diagram of the present invention.
Specific embodiment
1,2,3,4 a kind of embodiment of the invention is described with reference to the accompanying drawing.
A kind of No. 25 simple turnout movable-point crossing wing rails of 400 kilometers of 1520mm gauge P65 rail of speed per hour, the wing rail
Rail top edge line direction is the first inclined-plane being gradually lifted to heart rail rail top 20mm section part from the practical throat of railway frog, and the wing
The lifting value that rail rail withstands on the practical throat of railway frog is 0.0mm, and on heart rail rail top, the lifting value of 20mm section part is 0.7mm；Institute
It is be gradually lifted to heart rail rail top 30mm section part that wing rail rail top edge line direction, which is stated, from the 20mm section part of heart rail rail top
Two inclined-planes, and it is 2.2mm that wing rail rail, which withstands on the lifting value of heart rail rail top 30mm section part,；The wing rail rail top edge line direction from
It is the third inclined-plane gradually decreased that heart rail rail top 30mm section part, which rises to heart rail rail top 50mm section part, and wing rail rail withstands on heart rail
The lifting value of rail top 50mm section part is 0.0mm；The wing rail rail roof pendant straight line path direction is from the practical throat of railway frog to the heart
Rail rail top 50mm section part is inside is low, outside is high the 4th inclined-plane, and the taper on the outside of the 4th inclined-plane taper and wheel tread
Unanimously, wing rail rail top wheel tread is made at least to provide the support of length 10mm.
The processing method of the wing rail is: first by CNC milling machine to the wing rail from toe-end to the practical throat of railway frog
Locate the rail top of section by Milling Process, reduces the section wing rail height by 1.8-2.5mm, it is then real from railway frog to the wing rail
Border throat rises to the rail top of heart rail rail top 50mm section part and carries out Milling Process, forms first inclined-plane, the second inclined-plane, the
Three inclined-planes；Milling Process finally is carried out to the wing rail rail top at the first inclined-plane, the second inclined-plane and third inclined-plane again, makes wing rail rail top
The 4th inclined-plane low on the inside of being formed at the first inclined-plane, the second inclined-plane and third inclined-plane, outside is high, and the 4th inclined-plane taper and vehicle
Taper on the outside of wheel tread is consistent.
Heart rail rail top of the present invention cross dimensions is shown in Fig. 2 shown in A.The present invention is not changing existing wing rail line style
Under the premise of, by passing through Milling Process to the rail top of the practical throat section of railway frog from toe-end to the wing rail, make the section
Wing rail height reduces 2.2mm, and the wing rail is kept to stop section to heart rail rail top 50mm section part from the practical throat of railway frog
Wing rail height is constant, thus created condition to form first inclined-plane, the second inclined-plane, third inclined-plane by Milling Process,
Not only manufacturing cost is low, and can guarantee the contact precision at Wheel Rail Contact position.The wing rail need to only be increased when online use
Railway rail pad thickness can compensate for wing rail height decreasing value, easy to install and use.
The present invention in wing rail and rail top by there is closely connected section of rail top of heart rail of decreasing value that bevel structure is arranged, by long heart rail wheel
It carries crossover position to be delayed, reduces impact of the wheel load to long heart rail, slow down railway frog vertical structure irregularity, can offset
Heart rail is because of the vertical irregularity of railway frog caused by reducing, it is ensured that wheel tread does not carry pervious light section area in heart rail completely
Domain can be supported by wing rail rail top bevel structure always, to slow down the vertical irregularity in railway frog area, reduce wheel-rail impact
Power reduces railway frog area rate of wheel load reduction and derailment coefficients, improves the security reliability of track switch, provides comfortable seating for passenger
Environment.
To the rail top difference of speed per hour No. 25 simple turnout movable-point crossing wing rails of 400 kilometers of 1520mm gauge P65 rail
Railway frog area vehicle-railway points system dynamic response theoretical calculation is carried out by the two schemes for taking no action to, being arranged inclined-plane, calculates knot
Fruit see the table below:
400 kilometers of the speed per hour track switch coupled system dynamic response calculated result of 1520mm gauge P65 rail 25
By upper table calculated result it is found that behind the setting inclined-plane of wing rail rail top, the straight stock of long heart rail, the side stock of movable-point crossing hang down
Have dropped 10.03%, 11.5% respectively to power, straight stock, side stock derailment coefficients have dropped 11.1%, 9.1% respectively, straight stock, side
Stock rate of wheel load reduction has dropped 14.5%, 17.8% respectively, and body oscillating vertical acceleration has dropped 25%, 5.7% respectively, vehicle
Body vibration transverse acceleration has dropped 2.7%, 12.8% respectively.It follows that the wing rail rail top to movable-point crossing is arranged
Behind inclined-plane, railway frog area wheel-rail impact power can significantly reduce, improve traffic safety reliability.
Above-described embodiment, only presently preferred embodiments of the present invention, the practical range being not intended to limit the invention, thus it is all with
The equivalent variations that content described in the claims in the present invention is done should all be included within scope of the invention as claimed.
Claims (3)
1. a kind of 400 kilometers of movable-point crossing wing rails of speed per hour, it is characterized in that: the wing rail rail top edge line direction is real from railway frog
It is the first inclined-plane being gradually lifted that border throat, which rises to heart rail rail top 20mm section part, and wing rail rail withstands on the practical throat of railway frog
Lifting value be 0.0mm, on the heart rail rail top lifting value of 20mm section part be 0.5-1.2mm；The wing rail rail top edge route side
To heart rail rail top 30mm section part being the second inclined-plane being gradually lifted from the 20mm section part of heart rail rail top, and wing rail rail is withstood on
The lifting value of heart rail rail top 30mm section part is 1.8-2.5mm；The wing rail rail top edge line direction is disconnected from heart rail rail top 30mm
Being risen at face to heart rail rail top 50mm section part is the third inclined-plane gradually decreased, and wing rail rail withstands on heart rail rail top 50mm section part
Lifting value be 0.0mm；The wing rail rail roof pendant straight line path direction is from the practical throat of railway frog to heart rail rail top 50mm section
Place is the 4th inclined-plane that inside is low, outside is high, and the 4th inclined-plane taper is consistent with the taper on the outside of wheel tread, makes wing rail rail top
The support of length 10mm is at least provided for wheel tread.
2. 400 kilometers of movable-point crossing wing rails of a kind of speed per hour according to claim 1, it is characterized in that: the wing rail rail
The lifting value for withstanding on heart rail rail top 20mm section part is 0.7mm；The wing rail rail withstands on the lifting of heart rail rail top 30mm section part
Value is 2.2mm.
3. a kind of processing method of 400 kilometers of movable-point crossing wing rails of speed per hour of any of claims 1 or 2, it is characterized in that: first
It first passes through CNC milling machine and Milling Process, the area Shi Gai is passed through to the rail top of the practical throat section of railway frog from toe-end to the wing rail
Section wing rail height reduce 1.8-2.5mm, then to the wing rail from the practical throat of railway frog to heart rail rail top 50mm section part
Rail top carry out Milling Process, form first inclined-plane, the second inclined-plane, third inclined-plane；Finally again to the first inclined-plane, second tiltedly
Wing rail rail top at face and third inclined-plane carries out Milling Process, and wing rail rail is made to withstand on the first inclined-plane, the second inclined-plane and third inclined-plane
Place forms the 4th inclined-plane that inside is low, outside is high, and the 4th inclined-plane taper is consistent with the taper on the outside of wheel tread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810735243.8A CN108978361B (en) | 2018-07-06 | Wing rail of movable point frog with speed of 400 km per hour and processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810735243.8A CN108978361B (en) | 2018-07-06 | Wing rail of movable point frog with speed of 400 km per hour and processing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108978361A true CN108978361A (en) | 2018-12-11 |
| CN108978361B CN108978361B (en) | 2024-06-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114318963A (en) * | 2021-12-17 | 2022-04-12 | 中铁宝桥集团有限公司 | Fixed combined frog |
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| CN114318963A (en) * | 2021-12-17 | 2022-04-12 | 中铁宝桥集团有限公司 | Fixed combined frog |
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