CN109868692B - Design method of railway flexible guard rail device - Google Patents
Design method of railway flexible guard rail device Download PDFInfo
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- CN109868692B CN109868692B CN201910277244.7A CN201910277244A CN109868692B CN 109868692 B CN109868692 B CN 109868692B CN 201910277244 A CN201910277244 A CN 201910277244A CN 109868692 B CN109868692 B CN 109868692B
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Abstract
The invention discloses a design method of a railway flexible guard rail device, wherein the guard rail is arranged on the outer side of a steel rail, and the design method belongs toFirstly, avoiding the equipment arranged on the inner side of the steel rail, and simultaneously calculating the distance X between the guard rail and the steel rail according to the wheel rail parameter rim width D, the rail head width L and the wheel flange thickness D under different track sections and different conditions to obtain the average value of the distance between the guard rail and the steel rail
Meanwhile, deviation is calculated and analyzed by means of the mean square error of the statistical principle, and then different guarantee coefficients N are selected from a specific flexible guard rail device laying section to accurately calculate the design value of the X value of the section, so that derailment of the wheels of the motor train unit can be effectively prevented.
Description
Technical Field
The invention relates to the field of rail transit, in particular to a railway flexible guard rail device and a design method thereof.
Background
The existing railway track needs to be provided with the guard rail device in some high-risk track sections for preventing the derailment of the wheels of the motor train unit, for example, in high-risk track sections such as bridges, long and large tunnels, high embankments, small-radius curves and long and large ramps, the existing guard rail device is almost arranged on the inner side of the railway steel rail, but along with the installation of more and more devices (such as electrical equipment, signal equipment and the like) on the inner side of the steel rail, the installation space of the guard rail device on the inner side of the steel rail is limited, and even the guard rail device is difficult to install, and a new guard rail device.
Disclosure of Invention
The invention aims to overcome the defects that the existing guard rail device is almost arranged at the inner side of a railway steel rail, but the installation space of the guard rail device at the inner side of the steel rail is limited along with more and more equipment installed at the inner side of the steel rail, and even the guard rail device is difficult to install in the prior art, and provides a railway flexible guard rail device and a design method thereof.
In order to achieve the above purpose, the invention provides the following technical scheme:
a method of designing a flexible guard rail assembly for a railway, the guard rail assembly comprising a guard rail located outside a rail, the distance X between the guard rail and the rail being determined by the equation:
wherein X is the design distance between the guard rail and the steel rail,
the average value of the distance between the guard rail and the steel rail is shown, D is the rim width, L is the rail head width of the steel rail, D is the flange thickness, sigma is the mean square error, and N is the guarantee coefficient.
The design method of the flexible rail protection device for the railway is adopted to arrange the rail protection device on the outer side of the steel rail, the design method is pioneered, equipment arranged on the inner side of the steel rail is avoided, and meanwhile, the distance X between the rail protection device and the steel rail is obtained by calculating the average value of the distance between the rail protection device and the steel rail according to the wheel rail parameter rim width D, the rail head width L and the wheel flange thickness D under different track sections and different conditions
Mean square error using statistical principles simultaneouslyThe deviation is calculated and analyzed, and then different guarantee coefficients N are selected from a specific flexible guard rail device laying section to accurately calculate the design value of the X value of the section, so that derailment of the motor train unit wheels can be effectively prevented.
Preferably, when the guard rail device is arranged in the sections of bridges, small-radius curves, high embankments, long and large ramps, long and large tunnels and the like, the value of X is determined according to the wheel rail parameters of the set section, the functions of preventing the derailment of the wheels of the motor train unit, improving the longitudinal and transverse rigidity and enhancing the stability of the rail structure and reducing the workload of maintenance work are achieved, the wheels of the motor train unit are not contacted with the flexible rail guard device under the normal working condition, only when the wheels of the motor train unit are under the abnormal working condition and the wheels of the motor train unit tend to climb up the steel rail, the outer side of the wheel rim of the motor train unit is contacted with the flexible rail protection device, the flexible rail protection device shares a part of transverse force of the motor train unit wheels acting on the steel rail, so that the derailment coefficient of the wheels is reduced, meanwhile, the flexible rail protection device guides the wheels under abnormal working conditions to recover to a normal running track, and the function of preventing the wheels of the motor train unit from derailing is achieved.
Preferably, the error of the two X values at two adjacent seats connecting the guard rails is 0-5 mm.
Preferably, the distance Y of the top of the upper edge of the guard rail above the top surface of the steel rail is determined by the following equation:
y is the design distance that the top of the upper edge of the guard rail is higher than the top surface of the steel rail, and H1H is the wheel rim height, Delta L is the distance from the outer end of the wheel to the top surface of the steel rail, Delta H is the vertical abrasion of the steel rail, Delta s is the vertical abrasion of the wheel tread, H2The maximum value is required for the bounds.
The design distance Y that the top of the upper edge of the guard rail of the flexible guard rail device of the railway is higher than the top surface of the steel rail is the effective height H for preventing the guard rail from falling off under different track sections and different conditions1Height of wheel rimThe degree h, the distance delta L between the outer end of the wheel and the top surface of the steel rail, the vertical abrasion delta h of the steel rail and the vertical abrasion delta s of the wheel tread are calculated, and the rail climbing (jumping) derailment accident under the condition of load shedding (or suspension) of the wheels of the motor train unit can be effectively prevented.
By adopting the railway flexible guard rail device, the edge of the working edge of the guard rail is higher than the top surface Y of the steel rail, and when the motor train unit wheel climbs (jumps) the rail under the deloading (or suspension) working condition, the height of the motor train unit wheel climbing (or jumping) the rail must exceed the effective height H of the flexible guard rail device1Derailment is possible, and the derailment studied at present does not exceed H1The condition happens, so that the accident that the wheels of the motor train unit climb (or jump) the rails and get off the line can be effectively prevented.
The invention also provides a railway flexible guard rail device which is designed and manufactured by adopting the design method of the railway flexible guard rail device, and the railway flexible guard rail device comprises a plurality of supporting seats, each supporting seat is a cantilever structural member, one end of each supporting seat is connected with the steel rail, and the other end of each supporting seat is connected with the guard rail.
The distance X between the guard rail and the steel rail is set according to the length of a large (rail entering section) → a small (fixed section) → a large (rail exiting section).
By adopting the railway flexible guard rail device, the guard rail is arranged on the outer side of the steel rail, equipment arranged on the inner side of the steel rail is avoided, meanwhile, the setting size of the distance between the guard rail and the steel rail can be accurately determined, derailment of a train set is prevented, the longitudinal and transverse rigidity of a track structure is improved, the stability is enhanced, and the maintenance workload of track work is reduced.
Preferably, the guard rail device further comprises a plurality of pressing plates, each pressing plate corresponds to one support, each pressing plate is connected with the corresponding support through bolts, and the supports are clamped on the steel rail.
Preferably, insulation sheets are arranged between the support and the steel rail and between the pressing plate and the steel rail.
Preferably, a rubber sleeve is arranged between the guard rail and the support.
By adopting the structure, the rubber sleeve can enable the guard rail to have a buffering effect when the outer side of the wheel rim contacts with the guard rail, so that the impact load of the wheel on the guard rail under the adverse working condition is buffered, and the service life of the guard rail is prolonged.
Preferably, the rubber sleeve has different grade thicknesses of the front working surface and the rear working surface, so that the value of X can be conveniently adjusted.
Preferably, the guard rail is connected to the support by a bolt.
Preferably, the side surface of the support is provided with a vibration isolation pad.
Preferably, the distance X between the guard rail and the steel rail is 41-60 mm.
Preferably, on the long and large ramp track, the side surface of the support is tightly attached to the sleeper to prevent the steel rail from longitudinally creeping.
Preferably, the support is arranged between two adjacent sleepers on rails such as an overhead bridge, a small-radius curve, a high embankment, a long tunnel and the like.
Preferably, after the rail protection device is installed, the track structure is a frame structure formed by two steel rails and the rail protection device, before the rail protection device is installed, the track structure is mainly a frame structure formed by two steel rails, after the rail protection device is installed, the capacity of resisting the transverse deformation of the track is improved by 41.4%, namely the rigidity of the track structure is improved, and the stability of the track structure is enhanced, so that the damage of a motor train unit to the track is reduced, and the maintenance workload of track work is reduced.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. the design method of the railway flexible guard rail device is used for arranging the guard rail on the outer side of the steel rail, is initiated, avoids equipment arranged on the inner side of the steel rail, simultaneously calculates the average value X of the distance between the guard rail and the steel rail according to wheel rail parameter rim width D, steel rail head width L and wheel flange thickness D under different track sections and different conditions, calculates and analyzes the deviation by adopting the mean square error of the statistical principle, and then accurately calculates the design value of the X value by selecting different guarantee coefficients N according to the specific flexible guard rail device laying section, and can effectively prevent derailment of the wheels of the motor train unit;
2. by applying the design method of the railway flexible guard rail device, when the guard rail device is arranged in the sections such as a bridge, a high embankment, a long ramp, a long tunnel and the like, the value of X is determined according to the wheel-rail parameters of the set sections, so that the derailment of the wheels of the motor train unit is prevented, the longitudinal and transverse rigidity of the rail structure is improved, the stability is enhanced, and the workload of maintenance work is reduced;
3. by applying the design method of the railway flexible guard rail device, the design distance Y that the top of the upper edge of the guard rail is higher than the top surface of the steel rail can effectively prevent the rail climbing (jumping) derailment accident under the condition of load shedding (or suspension) of the wheels of the motor train unit;
4. by applying the railway flexible guard rail device, the guard rail is arranged on the outer side of the steel rail, equipment arranged on the inner side of the steel rail is avoided, meanwhile, the setting size of the distance between the guard rail and the steel rail can be accurately determined, derailment of a train set is prevented, the longitudinal and transverse rigidity of a track structure is improved, the stability is enhanced, and the maintenance workload of track work is reduced;
5. by adopting the structure, the rubber sleeve is arranged between the guard rail and the support, and when the rubber sleeve is contacted with the guard rail on the outer side of a wheel rim, the guard rail has a buffering effect, so that the impact load of a wheel on the guard rail under the adverse working condition is buffered, and the service life of the guard rail is prolonged;
6. by applying the railway flexible guard rail device, the front working surface and the rear working surface of the rubber sleeve have different grade thicknesses, so that the value of X can be conveniently adjusted.
Drawings
Fig. 1 is a schematic structural diagram of a railway flexible guard rail device according to the invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a schematic structural view of the support;
FIG. 4 is a schematic structural view of the rubber sleeve;
FIG. 5 is a schematic plan view of the support seat attached to the sleeper;
fig. 6 is a schematic plan view of the support between two sleepers.
The labels in the figure are: 1-guard rail, 2-steel rail, 3-support, 4-pressing plate, 5-insulating plate, 6-rubber sleeve, 7-vibration isolation pad and 8-sleeper.
Detailed Description
The present invention will be described in further detail with reference to test examples and specific embodiments. It should be understood that the scope of the above-described subject matter is not limited to the following examples, and any techniques implemented based on the disclosure of the present invention are within the scope of the present invention.
Example 1
As shown in fig. 1-6, the method for designing a flexible guard rail device for a railway according to the present invention comprises a guard rail 1, wherein the guard rail 1 is located outside a steel rail 2, and a distance X between the guard rail 1 and the steel rail 2 and a distance Y between the top of the upper edge of the guard rail 1 and the top of the steel rail 2 are determined by the following equation:
wherein X is the design distance between the guard rail 1 and the steel rail 2,
the average value of the distance between the guard rail 1 and the steel rail 2, D is the rim width, L is the rail head width of the steel rail 2, D is the rim thickness, sigma is the mean square error, N is a guarantee coefficient, Y is the design distance that the top of the upper edge of the guard rail 1 is higher than the top surface of the steel rail 2, and H is1The effective height of the guard rail 1 for preventing derailment, H is the wheel rim height, Delta L is the distance from the outer end of the wheel to the top surface of the steel rail 2, Delta H is the vertical abrasion of the steel rail 2, Delta s is the vertical abrasion of the wheel tread, H2Maximum value required for bounds; and the errors of the two X values at the two adjacent supports 3 connected with the guard rail 1 are 0-5 mm.
As a preferable scheme of this embodiment, when the guard rail device is arranged in a section such as a bridge, a small radius curve, a high embankment, a long and large ramp, a long and large tunnel, and the like, the value of X is determined according to the wheel rail parameters of the section, so as to prevent derailment of wheels of a motor train unit, improve longitudinal and transverse rigidity of a track structure, enhance stability, and reduce workload of maintenance work.
The design method of the railway flexible rail protection device is used for arranging the rail protection 1 outside the steel rail 2, is initiated, avoids equipment arranged inside the steel rail 2, and simultaneously calculates the average value of the distance between the rail protection 1 and the steel rail 2 according to the wheel-rail parameter rim width D, the steel rail head width L and the wheel rim thickness D under different track sections and different conditions to obtain the average value of the distance between the rail protection 1 and the steel rail 2
Meanwhile, deviation is calculated and analyzed by means of the mean square error of the statistical principle, and then different guarantee coefficients N are selected from a specific flexible guard rail device laying section to accurately calculate the design value of the X value of the section, so that derailment of the wheels of the motor train unit can be effectively prevented.
Example 2
As shown in fig. 1 to 6, the flexible guard rail device for railways according to the present invention is designed and manufactured by the design method of the flexible guard rail device for railways according to embodiment 1.
This guardrail device includes a plurality of support 3 and a plurality of clamp plate 4, every 3 supports are the cantilever structure, every 4 clamp plates correspond one 3 supports, every 4 bolted connection of clamp plate correspond 3 supports will 3 supports joint in on the rail 2, support 3 with between the rail 2 clamp plate 4 with all be equipped with insulating piece 5 between the rail 2, rail 2 sets up on sleeper 8.
The distance X between the guard rail 1 and the steel rail 2 is set according to the length of a large (rail entering section) → a small (fixed section) → a large (rail exiting section), the distance X between the guard rail 1 and the steel rail 2 is 41-60mm, and the two guard rails 1 are connected through a fishplate.
The side surface of the support 3 is provided with a vibration isolation pad 7; on a long and large ramp track, the side surface of the support 3 is tightly attached to a sleeper 8 to prevent the steel rail 2 from longitudinally creeping; on the rails such as an overhead bridge, a small-radius curve, a high embankment, a long tunnel and the like, the support 3 is arranged between two adjacent sleepers 8.
By applying the flexible rail protection device for the railway, the rail protection 1 is arranged on the outer side of the steel rail 2, equipment arranged on the inner side of the steel rail 2 is avoided, meanwhile, the setting size of the distance between the rail protection 1 and the steel rail 2 can be accurately determined, derailment of a train set is prevented, the longitudinal and transverse rigidity enhancement stability of a track structure is improved, and the work maintenance workload of the track is reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (4)
1. A method for designing a flexible guard rail device for a railway, characterized in that the guard rail device comprises a guard rail (1), the guard rail (1) is positioned outside a steel rail (2), and the distance X between the guard rail (1) and the steel rail (2) is determined by the following equation:
wherein X is the design distance between the guard rail (1) and the steel rail (2),
the average value of the distance between the guard rail (1) and the steel rail (2), D is the rim width, L is the rail head width of the steel rail (2), D is the flange thickness, sigma is the mean square error, and N is a guarantee coefficient.
2. The design method according to claim 1, wherein when the guard rail device is arranged in a bridge, a small radius curve, a high embankment, a long ramp and a long tunnel section, the value of X is determined according to wheel rail parameters of the arranged section.
3. The design method according to claim 1, characterized in that the error of the two values of X is 0- ± 5mm at two seats (3) adjacently arranged to connect the guard rail (1).
4. A design method according to any one of claims 1-3, characterized in that the distance Y of the top of the upper edge of the guide rail (1) above the top surface of the steel rail (2) is determined by the following equation:
wherein Y is the design distance that the top of the upper edge of the guard rail (1) is higher than the top surface of the steel rail (2), and H is1The effective height of the derailment prevention of the guard rail (1), H is the wheel rim height, Delta L is the distance from the outer end of the wheel to the top surface of the steel rail (2), Delta H is the vertical abrasion of the steel rail (2), Delta s is the vertical abrasion of the wheel tread, H2The maximum value is required for the bounds.
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| CN201910277244.7A CN109868692B (en) | 2019-04-08 | 2019-04-08 | Design method of railway flexible guard rail device |
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| CN201910277244.7A CN109868692B (en) | 2019-04-08 | 2019-04-08 | Design method of railway flexible guard rail device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113043141B (en) * | 2021-03-23 | 2022-05-03 | 攀钢集团攀枝花钢铁研究院有限公司 | Short-length steel rail grinding device |
| CN113863064B (en) * | 2021-10-27 | 2023-05-16 | 安徽中志轨道交通装备制造有限公司 | Small-radius curve guard rail connecting assembly and connecting method thereof |
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| CN2823310Y (en) * | 2005-05-09 | 2006-10-04 | 李仲才 | Elastic wear-reducing separation proof rail protector |
| CN2915915Y (en) * | 2006-05-26 | 2007-06-27 | 王凤林 | Safety protector for use in running of train |
| CN203684006U (en) * | 2014-02-12 | 2014-07-02 | 成都铁科利安轨道交通科技有限公司 | Novel urban railway guard rail device |
| KR101588228B1 (en) * | 2013-06-12 | 2016-01-25 | 영중산업 주식회사 | Derailment prevention apparatus for railway vehicles |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8474730B2 (en) * | 2010-02-22 | 2013-07-02 | Progress Rail Services Corp | Track system including a guardrail |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2823310Y (en) * | 2005-05-09 | 2006-10-04 | 李仲才 | Elastic wear-reducing separation proof rail protector |
| CN2915915Y (en) * | 2006-05-26 | 2007-06-27 | 王凤林 | Safety protector for use in running of train |
| KR101588228B1 (en) * | 2013-06-12 | 2016-01-25 | 영중산업 주식회사 | Derailment prevention apparatus for railway vehicles |
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