CN114351514A - Be used for regional tooth pitch adjusting device in Strub formula cogged rail railway bridge clearance - Google Patents
Be used for regional tooth pitch adjusting device in Strub formula cogged rail railway bridge clearance Download PDFInfo
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- CN114351514A CN114351514A CN202111569928.8A CN202111569928A CN114351514A CN 114351514 A CN114351514 A CN 114351514A CN 202111569928 A CN202111569928 A CN 202111569928A CN 114351514 A CN114351514 A CN 114351514A
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 26
- 210000001503 joint Anatomy 0.000 claims abstract description 8
- 241001669679 Eleotris Species 0.000 claims description 26
- 238000012544 monitoring process Methods 0.000 claims description 5
- 239000004697 Polyetherimide Substances 0.000 claims 2
- 229920001601 polyetherimide Polymers 0.000 claims 2
- 230000008602 contraction Effects 0.000 abstract description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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Abstract
The invention discloses a pitch adjusting device for a gap area of a Strub type toothed rail railway bridge, wherein tooth tracks on two sides are provided with butt joint ends corresponding to positions of widened sleepers, three-level rack sections are arranged on the positions of the widened sleepers corresponding to the butt joint ends of the tooth tracks on the two sides, each three-level rack section comprises a standard gear, a positive deflection gear and a negative deflection gear, and an electric control executing device enables the standard gear, the positive deflection gear and the negative deflection gear to be switched among the tooth track butt joint ends on the two sides. The rack in the gap area is subjected to positive displacement processing and negative displacement processing aiming at expansion with heat and contraction with cold in the gap area of the bridge, and the rack in the gap area of the bridge is subjected to displacement processing by means of an electric signal transmitted by a displacement sensor, so that the problem of rack stretching fracture caused by bridge contraction is solved, and the safe and stable operation of a rack rail train on the bridge is ensured.
Description
Technical Field
The invention belongs to the technical field of rail transit planning research, and particularly relates to a pitch adjusting device for a gap area of a Strub type toothed rail railway bridge.
Background
The foreign Monte-Vill tooth rail railway is a typical Strub tooth rail railway, is located in Xia Muni a famous tourism city in east France, completes the whole line construction and is put into operation at 1909, and only opens 5 and 29 days in 1909 to 10 and 15 days in the same year to transport 47480 passengers, which has been greatly successful at that time.
In order to improve the transportation capacity, a line is provided with a contact net in 1953 and then diesel oil and electric motor cars are added, the total length of the line is 5.1km, a Strub mode is adopted, the track gauge is 1000mm, the maximum gradient reaches 220 per thousand, the line height difference 871m is realized, and more than 80 ten thousand tourists take the track-and-rack train in 2009. In recent years, the rack-and-rail railway is emphasized because of the super-large climbing capacity which other rail transit does not have, the construction work of the first rack-and-rail railway-city river weir to four girl mountain and mountain rail traffic projects is started in the province of Sichuan, the projects are located in the province of Sichuan city and the state of Aban dam, the rack-and-rail line is not mature in China, the bridge is contracted due to the influence of external temperature in the connection of the rack-and-rail line and the bridge, the rack-and-rail is stretched, and serious hidden dangers are caused to the safe operation of the rack-and-rail vehicle.
The invention relates to a tooth pitch adjusting device which is designed aiming at the shrinkage of a bridge gap and ensures that the tooth pitch can be adjusted to correspond to the stretching of a rack caused by the shrinkage of a bridge in the process of the shrinkage of the bridge.
Disclosure of Invention
The invention provides a tooth pitch adjusting device for a tooth track railway bridge gap area of a Sturb system, aiming at the problems that due to the arrangement form of a tooth track railway at a bridge gap, the bridge is subjected to expansion and deformation caused by the influence of temperature and tooth track vehicle load, and Sturb system tooth track railway fasteners are sheared, tooth track racks are pulled, and gear tooth track meshing is unstable.
In order to solve the technical problems, the invention is realized by the following technical scheme:
a tooth pitch adjusting device for a gap area of a Strub type toothed rail railway bridge is characterized in that a widened sleeper is mounted on the upper side of a gap corresponding to the gap of the bridge, toothed rails on two sides are provided with butt ends corresponding to the widened sleeper, three-level rack sections are mounted on the widened sleeper corresponding to the butt ends of the toothed rails on the two sides, and the three-level rack sections are used for connecting the toothed rails on the two sides;
the three-level rack section comprises a central standard gear, the two sides of the standard gear are respectively provided with a positive deflection gear and a negative deflection gear, the two sides of the widening type sleeper corresponding to the three-level rack section are respectively provided with an electric control executing device, and the electric control executing device is used for driving the three-level rack section and switching the corresponding standard gear, the positive deflection gear and the negative deflection gear between the tooth track butt ends of the two sides.
Furthermore, the corresponding module, tooth number and pressure angle of the standard gear, the positive modified gear and the negative modified gear are the same, the addendum circle and the dedendum circle of the positive modified gear are correspondingly increased relative to the standard gear, the tooth root height is reduced, the addendum height is increased, and the tooth thickness of the reference circle and the tooth thickness of the dedendum circle are increased;
compared with a standard gear, the addendum circle and the dedendum circle of the negative modified gear are correspondingly reduced, the dedendum height is increased, the addendum height is reduced, and the reference circle tooth thickness and the dedendum circle tooth thickness are both reduced.
Further, displacement sensors are installed on two sides, corresponding to the three-level rack segments, of the positions of the bridge gaps, and are used for monitoring the change of the gap distance and controlling the corresponding electric control execution devices to operate.
Furthermore, the electric control executing device and the corresponding side wall of the three-stage rack segment are supported by an electric control spring.
Further, the widened sleeper is provided with a sleeper groove for stably and transversely moving the three-level rack segment.
Further, the lower side wall of the three-level rack segment is in contact with the bottom of the sleeper slot, and a wear plate is fixed on the lower side wall of the three-level rack segment.
Furthermore, wedge-shaped pins are arranged at the connecting ends of the standard gear, the positive modified gear and the negative modified gear and the rack rails at the two sides, and wedge-shaped grooves for clamping the wedge-shaped pins are correspondingly arranged on the rack rails at the two sides.
Further, a pressure plate is arranged between the wedge-shaped pin and the wedge-shaped groove, and the pressure plate is made of PEI with elasticity and high wear resistance.
The invention has the following beneficial effects:
the invention is based on that the strub type rack-rail railway bridge expands with heat and contracts with cold due to the influence of temperature, so that the gap of the bridge is greatly contracted, and the rack of the rack-rail is severely stretched. According to the working principle of the deflection gear, the rack in the gap area is subjected to positive deflection treatment and negative deflection treatment aiming at expansion with heat and contraction with cold in the gap area of the bridge, and the rack in the gap area of the bridge is subjected to deflection treatment by means of an electric signal transmitted by the displacement sensor, so that the problem of rack stretch fracture caused by bridge contraction is solved, and the safe and stable operation of the rack-and-rail train on the bridge is ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used for describing the embodiments are briefly introduced below, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1: the structure of the invention.
FIG. 2: the invention is shown in the enlarged view at a in fig. 1.
FIG. 3: the invention is shown in top view in fig. 1.
FIG. 4: the invention is shown in the front view of fig. 1.
FIG. 5: the invention relates to a three-level rack segment structure diagram.
FIG. 6: the invention is illustrated in the formal diagram of FIG. 5.
FIG. 7: the structure of the pressure plate of the invention.
FIG. 8: the invention relates to a displacement sensor working principle diagram.
In the drawings, the components represented by the respective reference numerals are listed below:
the device comprises a widened sleeper 1, a toothed rail 4, a three-level rack segment 2, a standard gear 21, a positive deflection gear 22, a negative deflection gear 23, an electric control actuator 3, a displacement sensor 12, an electric control spring 31, a sleeper groove 11, a wear plate 24, a wedge-shaped pin 25, a wedge-shaped groove 41 and a pressure plate 42.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the embodiments are only a part of the embodiments of the present invention, but not all of the embodiments.
In the present invention, it is to be understood that: the terms "open," "upper," "lower," "thickness," "top," "center," "length," "inner," "peripheral," and the like are used herein to indicate an orientation or positional relationship, merely to facilitate describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced components must have a particular orientation.
As shown in fig. 1-6: a tooth pitch adjusting device for a gap area of a Strub type toothed rail railway bridge is characterized in that a widened sleeper 1 is installed on the upper side of a gap corresponding to the gap of the bridge, toothed rails 4 on two sides are provided with butt joint ends corresponding to the widened sleeper 1, three-level rack sections 2 are installed on the positions of the widened sleeper 1 corresponding to the butt joint ends of the toothed rails 4 on the two sides, and the three-level rack sections 2 are used for connecting the toothed rails 4 on the two sides;
As shown in fig. 5-6: the standard gear 21, the positive modified gear 22 and the negative modified gear 23 have the same corresponding module, tooth number and pressure angle, the addendum circle and the dedendum circle of the positive modified gear are correspondingly increased, the tooth root height is reduced, the addendum height is increased, and the tooth thickness of the reference circle and the tooth thickness of the dedendum circle are increased relative to the standard gear;
compared with a standard gear, the addendum circle and the dedendum circle of the negative modified gear are correspondingly reduced, the dedendum height is increased, the addendum height is reduced, and the reference circle tooth thickness and the dedendum circle tooth thickness are both reduced. The gear pitch is adjusted through displacement to compensate for overlarge deformation generated at the gap of the bridge, the gear and rack meshing impact is easily caused to strongly break the rack due to overlarge change of the standard rack pitch, the displacement range of the independent three-level rack section is set according to the maximum deformation caused by the temperature and the train load of the bridge, and the deformation range of the bridge is met.
As shown in fig. 1 and 8: and displacement sensors 12 are arranged on two sides of the bridge gap corresponding to the three-level rack segments 2, and the displacement sensors 12 are used for monitoring the change of the gap distance and controlling the corresponding electric control execution device 3 to operate.
The displacement sensor is a linear device belonging to metal induction, after a power supply is switched on, an alternating magnetic field is generated on an induction surface of a switch, when a metal object approaches the induction surface, eddy current is generated in the metal to absorb the energy of an oscillator, so that the output amplitude of the oscillator is linearly attenuated, and then the purpose of detecting the object in a non-contact manner is fulfilled according to the change of the attenuation. The displacement sensor has no sliding contact, is not influenced by non-metal factors such as dust and the like during operation, has low power consumption and long service life, and can be used under various severe conditions.
The bridge is influenced by temperature in a real-time change process, so that when the displacement sensor monitors that the deformation of two ends of a bridge gap does not exceed 10 mm, the independent three-level rack segments cannot be changed in teeth; when the bridge is influenced by external low temperature, the movement speed of the molecules in the bridge is reduced, the two ends of the gap of the bridge are contracted, the gap distance is increased, and the monitoring distance of the displacement sensor reaches 110 mm, the transmitted electric signal pushes the rack section which is positively displaced to the middle position under the control of the electric control execution device, and the tooth pitch is adjusted by the positively displaced rack to compensate the overlarge stretching of the gap to the rack caused by the enlarged gap; when the bridge is influenced by external high temperature, the movement speed of the molecules in the bridge is increased, the two ends of the gap of the bridge are expanded, the gap distance is reduced, and when the monitoring distance of the displacement sensor reaches 90 mm, the transmitted electric signal pushes the rack section with negative displacement to the middle position through the electric control executing device, and the tooth pitch is adjusted through the rack with negative displacement to compensate the gap and reduce the overlarge compression on the rack; the device compensates the distance change at both ends of the bridge clearance through the regulation of the positive and negative displacement racks, and can effectively relieve the meshing impact of the gear rack and ensure the safe passing of the rack-and-pinion train on the bridge when the bridge is deformed.
As shown in fig. 2: the electric control executing device 3 and the corresponding side wall of the three-stage rack segment 2 are supported by an electric control spring 31.
As shown in fig. 2: the widened sleeper 1 is provided with a sleeper groove 11 for the stable transverse movement of the three-level rack segment 2. Through the signal of telecommunication of displacement sensor transmission, the elasticity of the automatically controlled spring of control both sides promotes about independent tertiary rack section, and the location of rack section is through the base and the sleeper groove location of widening the sleeper, and the thickness of every section rack is 60 millimeters, and the clearance distance at sleeper groove both ends also is 60 millimeters.
As shown in fig. 5: the lower side wall of the tertiary rack segment 2 is in contact with the bottom of the sleeper groove 11, and a wear plate 24 is fixed on the lower side wall of the tertiary rack segment 2.
As shown in fig. 2 and 5: wedge-shaped pins 25 are arranged at the connecting ends of the standard gear 21, the positive modified gear 22, the negative modified gear 23 and the racks on the two sides, and wedge-shaped grooves 41 for clamping the wedge-shaped pins 25 are correspondingly arranged on the racks 4 on the two sides. Different distance signals transmitted by the displacement sensors are different, and different racks of the three-stage rack segment are controlled to be connected with rack racks of racks of racks at two ends through wedge-shaped pins.
As shown in fig. 2 and 7: a pressure plate 42 is arranged between the wedge-shaped pin 25 and the wedge-shaped groove 41, and the pressure plate 42 is made of PEI with elasticity and high wear resistance. The pressure plate is located independent tertiary rack section and both ends rack wedge round pin junction, independent installation, the pressure plate adopts the PEI material, itself has certain hardness and intensity, elasticity and high wear resistance have simultaneously, when the distance change signal of displacement sensor transmission is no longer than 10 millimeters, both ends rack and independent tertiary rack section junction can compensate the bridge end through compression pressure plate compensation distance change, whole pressure plate is the compensation to the distance when the structure of a dovetail groove can satisfy rack stretch and compression.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not exhaustive. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention.
Claims (8)
1. The utility model provides a be used for regional tooth pitch adjusting device in Strub formula cogged rail railway bridge clearance which characterized in that: the bridge rack is characterized in that a widened sleeper (1) is installed on the upper side of the gap corresponding to the gap of a bridge, butt joint ends are arranged at the positions, corresponding to the widened sleeper (1), of the rack rails (4) on the two sides, a three-level rack section (2) is installed at the positions, corresponding to the butt joint ends of the rack rails (4) on the two sides, of the widened sleeper (1), and the three-level rack section (2) is used for connecting the rack rails (4) on the two sides;
tertiary rack section (2) are including the standard gear (21) of central authorities, and the both sides of standard gear (21) are positive deflection gear (22) and negative deflection gear (23), automatically controlled final controlling element (3) are all installed to the both sides that widen type sleeper (1) correspond tertiary rack section (2), automatically controlled final controlling element (3) are used for driving tertiary rack section (2) for make corresponding standard gear (21), positive deflection gear (22) and negative deflection gear (23) switch between rack (4) butt joint end of both sides.
2. The device of claim 1, wherein the pitch adjustment device is adapted to adjust the pitch of the gap region of the Strub-type rack rail railway bridge, and comprises: the standard gear (21), the positive modified gear (22) and the negative modified gear (23) have the same corresponding modulus, tooth number and pressure angle, the addendum circle and the dedendum circle of the positive modified gear are correspondingly increased, the tooth root height is reduced, the addendum height is increased, and the tooth thickness of the reference circle and the tooth thickness of the dedendum circle are increased relative to the standard gear;
compared with a standard gear, the addendum circle and the dedendum circle of the negative modified gear are correspondingly reduced, the dedendum height is increased, the addendum height is reduced, and the reference circle tooth thickness and the dedendum circle tooth thickness are both reduced.
3. The device of claim 1, wherein the pitch adjustment device is adapted to adjust the pitch of the gap region of the Strub-type rack rail railway bridge, and comprises: displacement sensor (12) are all installed to the both sides that the position of bridge gap corresponds tertiary rack section (2), displacement sensor (12) are used for monitoring the change of gap distance to the operation of the automatically controlled final controlling element (3) that control corresponds.
4. The device for adjusting the pitch of the gap area of a Strub-type toothed rail railway bridge according to any one of claims 1 to 3, wherein: and the electric control executing device (3) and the corresponding side wall of the three-level rack segment (2) are supported by an electric control spring (31).
5. The device of claim 4, wherein the pitch adjustment device is adapted to adjust the pitch of the gap region of the Strub-type toothed rail railway bridge, and comprises: the widened sleeper (1) is provided with a sleeper groove (11) for the stable transverse movement of the three-level rack segment (2).
6. The device of claim 5, wherein the pitch adjustment device is adapted to adjust the pitch of the gap region of the Strub-type toothed rail railway bridge, and comprises: the lower side wall of the three-level rack segment (2) is in contact with the bottom of the sleeper groove (11), and a wear plate (24) is fixed on the lower side wall of the three-level rack segment (2).
7. The device of claim 4, wherein the pitch adjustment device is adapted to adjust the pitch of the gap region of the Strub-type toothed rail railway bridge, and comprises: the standard gear (21), the positive modified gear (22), the negative modified gear (23) and the connecting ends of the racks on the two sides are provided with wedge-shaped pins (25), and the racks (4) on the two sides are correspondingly provided with wedge-shaped grooves (41) clamped into the wedge-shaped pins (25).
8. The device of claim 7, wherein the pitch adjustment device is adapted to adjust the pitch of the gap region of the Strub-type rack rail railway bridge, and comprises: and a pressure plate (42) is arranged between the wedge-shaped pin (25) and the wedge-shaped groove (41), and the pressure plate (42) is made of PEI (polyetherimide) with elasticity and high wear resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111569928.8A CN114351514B (en) | 2021-12-21 | Tooth pitch adjusting device for gap area of Strub-type toothed rail railway bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111569928.8A CN114351514B (en) | 2021-12-21 | Tooth pitch adjusting device for gap area of Strub-type toothed rail railway bridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114351514A true CN114351514A (en) | 2022-04-15 |
| CN114351514B CN114351514B (en) | 2024-08-02 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115075130A (en) * | 2022-06-08 | 2022-09-20 | 中铁二院工程集团有限责任公司 | Longitudinal anchoring system for seamless toothed rails on bridge and behind abutment and construction method |
| CN115217003A (en) * | 2022-07-28 | 2022-10-21 | 中铁二院工程集团有限责任公司 | Seamless rack self-adaptation telescopic adjusting system |
| CN115849178A (en) * | 2023-02-28 | 2023-03-28 | 太原矿机电气股份有限公司 | Single track cogged rail connection structure |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115075130A (en) * | 2022-06-08 | 2022-09-20 | 中铁二院工程集团有限责任公司 | Longitudinal anchoring system for seamless toothed rails on bridge and behind abutment and construction method |
| CN115075130B (en) * | 2022-06-08 | 2024-05-28 | 中铁二院工程集团有限责任公司 | Longitudinal anchoring system of seamless toothed rail on bridge and behind bridge abutment and construction method |
| CN115217003A (en) * | 2022-07-28 | 2022-10-21 | 中铁二院工程集团有限责任公司 | Seamless rack self-adaptation telescopic adjusting system |
| CN115849178A (en) * | 2023-02-28 | 2023-03-28 | 太原矿机电气股份有限公司 | Single track cogged rail connection structure |
| CN115849178B (en) * | 2023-02-28 | 2023-04-25 | 太原矿机电气股份有限公司 | Monorail toothed rail track connection structure |
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