CN115447620A

CN115447620A - Wheel-rail driving system for standard rail and gear-rail driving system for meter rail

Info

Publication number: CN115447620A
Application number: CN202211279022.7A
Authority: CN
Inventors: 曲琅博; 廖志伟; 肖泽桦; 潘宁凯; 周新鹏; 张冲
Original assignee: CRRC Zhuzhou Locomotive Co Ltd
Current assignee: CRRC Zhuzhou Locomotive Co Ltd
Priority date: 2022-10-19
Filing date: 2022-10-19
Publication date: 2022-12-09

Abstract

The invention discloses a wheel pair driving system driven by a standard rail wheel rail and a meter rail tooth rail. The wheel pair driving system comprises an axle, wheels, a rack wheel arranged on the axle through a bearing, a locking device, a driving device and a gear transmission system driven by the driving device; a final gear of the gear transmission system is fixedly connected with an axle, and the final gear is fixedly connected with a rack wheel through a connecting piece; the wheel is arranged on the axle through a bearing or a spline shaft sleeve arranged on the axial outer side of the bearing, and the spline shaft sleeve is in interference connection with the axle; the wheel is locked on the spline shaft sleeve through a locking device at a standard rail section or locked on the bearing through a locking device at a meter rail section. The invention can make the rack-rail vehicle suitable for meter-rail and standard-rail railways at the same time by changing the transverse distance of the wheels.

Description

Wheel-rail driving system for standard rail and gear-rail driving system for meter rail

Technical Field

The invention relates to a wheel pair driving system driven by a standard rail wheel rail and a meter rail tooth rail wheel rail, belonging to the technical field of railway vehicles.

Background

The existing tooth rail vehicle bogie is mostly suitable for a bogie with only one rail gauge and cannot be simultaneously suitable for a metric rail and a standard rail railway.

China is mostly standard rails for main railways, and the tooth-track railways are mostly meter-track railways, so the tooth-track vehicles cannot be suitable for the main railways, and the popularization and the application of the tooth-track vehicles are greatly limited.

The prior patent CN103938501B applied by the applicant mainly researches the wheel-track gauge transformation of the standard in-rail nested metric rail, and does not relate to the transformation of a rack wheel and a wheel gauge.

In addition, the invention patent publication No. CN113830123A previously applied by the applicant discloses a variable-track-pitch bogie, wherein the track-changing device comprises a bearing sleeve, a bearing assembly and at least two locking units, the bearing sleeve is arranged in the axle box, and the bearing sleeve can axially move along the inner wall of the axle box. The bearing assembly comprises a first bearing and a second bearing, an inner ring of the first bearing is fixedly connected to the periphery of the connecting sleeve, and an outer ring of the first bearing is arranged on the inner side of the bearing sleeve; the inner ring of the second bearing is fixedly connected to the axle, and the outer ring of the second bearing is arranged on the end cover. By adopting the wheel-set axle box rail-changing device with the double locking units and the double bearings, the axial movement of the wheels relative to the axle box body and the axle in a larger range can be realized, thereby achieving the purpose of rail-changing. Two locking unit axial interval sets up on the axle box for the device of becoming rail possesses two kinds of locking states: and the meter gauge state and the standard rail state are used for realizing interconnection and intercommunication between the standard rail and the meter gauge of the locomotive or the motor train unit. The track-distance-variable bogie can realize wheel track driving between a meter rail and a standard rail, cannot realize tooth track driving of a meter rail railway, and has a more complex track-changing device and higher manufacturing cost.

Disclosure of Invention

The invention aims to provide a wheel set driving system driven by wheel rails for standard rails and a rack rail for meter rails, wherein the wheel set driving system can enable the rack rail vehicle to be simultaneously suitable for meter rails and standard rail railways by changing the transverse distance of wheels.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

a wheel pair driving system driven by a standard rail wheel rail and a meter rail tooth rail comprises an axle, wheels, a tooth rail wheel arranged on the axle through a bearing, a locking device, a driving device and a gear transmission system driven by the driving device; a final gear of the gear transmission system is fixedly connected with an axle, and the final gear is fixedly connected with a rack gear through a connecting piece; the wheel is arranged on the axle through a bearing or a spline shaft sleeve arranged at the axial outer side of the bearing, and the spline shaft sleeve is in interference connection with the axle;

the wheel is locked on the spline shaft sleeve through a locking device at a standard rail section or locked on the bearing through a locking device at a meter rail section.

Therefore, when the vehicle runs on a standard rail, the wheels are positioned on the spline shaft sleeves on the axles, the wheels are locked by the locking devices, and the wheels and the axles synchronously move through the splines. At the moment, the driving device transmits power to the final-stage gear so as to drive the axle to rotate, and the axle drives the wheels to rotate through the spline shaft sleeve, so that wheel-rail driving is realized. Through fixed connection between rack rail wheel and the final stage gear, rack rail wheel is also in the rotatory attitude of changeing this moment, because there is not the rack in the middle of the standard orbit, consequently, rack rail wheel belongs to idle running, can not transmit power to the vehicle through rack rail wheel.

When the wheel runs on the meter gauge, the wheel is positioned at the bearing on the axle and is locked by the locking device. The driving device transmits power to the final gear and the rack wheel, the final gear drives the axle to rotate, and the axle does not transmit power through the wheels because the axle and the wheels are decoupled through the bearings. At the moment, the wheel and the axle realize motion decoupling through the bearing, and the condition that the wheel slips on the track due to the fact that linear speeds of the rack wheel and the wheel are inconsistent is avoided. The rack-and-rail wheel is meshed with the rack in the middle of the rail, so that power transmission is realized, and the vehicle is driven to move forwards.

According to the embodiment of the invention, the invention can be further optimized, and the following is the technical scheme formed after optimization:

in one preferred embodiment, the gear transmission system includes a first gear, a second gear, a third gear, a fourth gear, and a fifth gear as a final gear; the first gear, the second gear and the third gear form a gear pair, the third gear and the fourth gear are in coaxial transmission, and the fourth gear and the fifth gear form a gear pair; the power output end of the driving device is connected with the wheel shaft of the first gear.

In one preferred embodiment, for convenience of disassembly and assembly, the fifth gear and the rack wheel are fixedly connected through bolts.

In one preferred embodiment, the wheel seat inner circular surface is provided with splines, and the outer end of the splines is provided with a bell mouth, and the large mouth of the bell mouth faces to the shaft end of the axle. The design is more convenient for the wheel wheels to slide into the spline shaft sleeve more easily when the meter rail is converted into the standard rail.

Based on the same inventive concept, the invention also provides a method for performing rail transfer by using the wheel set driving system driven by the standard rail wheel rail and the meter rail tooth rail, which comprises the following steps:

when the vehicle is switched from the standard rail to the meter rail, the locking device unlocks the wheels, the wheels are moved from the spline shaft sleeve to the bearing by virtue of the rail-changing guide device on the rail, and then the wheels are locked by the locking device, so that the conversion from the standard rail to the meter rail is realized;

when the vehicle is switched from the meter rail to the standard rail, the locking device unlocks the wheel, the wheel is moved from the bearing to the spline shaft sleeve by virtue of the rail-changing guide device on the rail, and then the locking device locks the wheel, so that the conversion from the meter rail to the standard rail is realized.

Compared with the prior art, the invention has the beneficial effects that: the invention can make the rack-rail vehicle suitable for meter-rail and standard-rail railways at the same time by changing the transverse distance of the wheels, and meanwhile, the wheel pair driving system can realize the mixed driving of the rack rail and the wheel rail without arranging a clutch, and the structure is greatly simplified, thereby greatly promoting the popularization and the application of the rack-rail vehicle in China.

Drawings

FIG. 1 is a schematic diagram of a variable gauge wheelset drive system according to one embodiment of the present invention;

FIG. 2 is a schematic view of the gage wheel set system of FIG. 1;

FIG. 3 is a schematic view of the metric rail wheel set of FIG. 1;

FIG. 4 is a schematic view of the standard rail wheel set of FIG. 1;

FIG. 5 is a schematic view of the wheel of FIG. 1;

FIG. 6 is a side elevational view of the wheel side of FIG. 5 (viewed axially from the axle stub end);

FIG. 7 is a schematic view of the mounting of the wheel;

fig. 8 is a schematic view of the state of the wheels before and after a change of track.

In the figure

1-vehicle wheels; 2-axle; 3-spline shaft sleeve; 4-a bearing; 5-locking device; 7-a first gear; 8-a second gear; 9-a third gear; 10-a fourth gear; 11-fifth gear; 12-a rack wheel; 13-a brake drum; 14-keyway.

Detailed Description

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. For convenience of description, the words "upper", "lower", "left" and "right" in the following description are used only to indicate the correspondence between the upper, lower, left and right directions of the drawings themselves, and do not limit the structure.

As shown in fig. 1, the wheel set driving system for standard rail wheel track drive and meter rail tooth track drive of the present embodiment includes a wheel 1, an axle 2, a motor 6, a first gear 7, a second gear 8, a third gear 9, a fourth gear 10, a fifth gear 11, a tooth track wheel 12, and a brake drum 13.

The motor 6 outputs power, and the power is transmitted to the axle 2 or the rack wheel 12 through the first gear 7, the second gear 8, the third gear 9, the fourth gear 10 and the fifth gear 11. The fifth gear 11 is in interference connection with the axle 2, and the fifth gear 11 is in bolt connection with the rack wheel 12. A bearing 4 is provided between the rack gear 12 and the axle 2 to decouple the two.

As shown in fig. 2 to 4, the axle 2 and the bearing 4 are in interference fit, and the axle 2 and the spline housing 3 are in interference fit.

When the vehicle runs on a standard rail, the wheel 1 is positioned at a spline shaft sleeve 3 on the axle 2, the wheel 1 is locked by the locking device 5, and the wheel 1 and the axle 2 synchronously move through splines.

When the bicycle runs on a meter gauge, the wheel 1 is positioned at the bearing 4 on the axle 2, the wheel 1 is locked by the locking device 5, at the moment, the wheel 1 and the axle 2 realize motion decoupling through the bearing 4, and the condition that the wheel 1 slips on a track due to the fact that the linear speeds of the rack wheel 12 and the wheel 1 are inconsistent is avoided.

As shown in fig. 5-7, the inner circular surface of the wheel seat of the wheel 1 is provided with a spline, and the outer end part of the spline is provided with a bell mouth, so that the wheel 1 can be conveniently changed from a meter gauge to a standard gauge.

As shown in fig. 8, when the vehicle is switched from the standard rail to the meter rail, the locking device 5 unlocks the wheel 1, the wheel 1 moves from the axle spline shaft sleeve 3 to the bearing 4 by means of the rail-changing guide device on the rail, and then the locking device 5 locks the wheel 1, so that the conversion from the standard rail to the meter rail is realized.

When the vehicle is switched from the meter gauge to the standard gauge, the locking device 5 unlocks the wheel, the wheel 1 moves from the bearing 4 to the axle spline shaft sleeve 3 by means of the track change guide device on the track, and then the locking device 5 locks the wheel 1, so that the meter gauge is changed into the standard gauge.

The rack wheel 12 of the embodiment is always not separated from the bearing 4, and the rack wheel 12 is in a middle position. The locking device 5 locks the wheel, and the track-changing guide device guides the wheel to move along the axial direction of the wheel, which are well-known in the art and are not described herein.

The above-described embodiments are set forth so that this disclosure will be thorough and complete, and will not be limited by any theory presented in the preceding claims, which may suggest themselves to those skilled in the art after reading this disclosure and all equivalents thereof that fall within the scope of the invention as defined in the claims appended hereto.

Claims

1. A wheel pair driving system for standard rail wheel rail driving and meter rail tooth rail driving comprises an axle (2), wheels (1), a tooth rail wheel (12) arranged on the axle (2) through a bearing, a locking device, a driving device and a gear transmission system driven by the driving device; the method is characterized in that: a final gear of the gear transmission system is fixedly connected with an axle (2), and the final gear is fixedly connected with a rack wheel (12) through a connecting piece; the wheel (1) is arranged on the axle (2) through a bearing or a spline shaft sleeve (3) arranged on the axial outer side of the bearing (4), and the spline shaft sleeve (3) is in interference connection with the axle (2);

the wheel (1) is locked on the spline shaft sleeve (3) through a locking device in a standard track section or locked on the bearing (4) through a locking device in a meter track section.

2. A standard rail-and meter-rail-driven wheelset drive system according to claim 1, characterized in that the gear transmission system comprises a first gear (7), a second gear (8), a third gear (9), a fourth gear (10) and a fifth gear (11) as a final gear; wherein

The first gear (7), the second gear (8) and the third gear (9) form a gear pair, the third gear (9) and the fourth gear (10) are in coaxial transmission, and the fourth gear (10) and the fifth gear (11) form a gear pair;

the power output end of the driving device is connected with the wheel axle of the first gear (7).

3. Wheel-set drive system for standard rail wheel-track drive and meter rail tooth-track drive according to claim 2, characterized in that the fifth gear wheel (11) and the tooth-track wheel (12) are fixedly connected by means of bolts.

4. Wheel-set drive system for standard-rail and metric-rail cogged-rail drive according to claim 1, characterized in that the inner circle of the wheel seat of the wheel (1) is provided with splines, and the outer ends of the splines are provided with bellmouths, the big mouth of which faces the axle end of the axle (2).

5. A method of using the standard rail wheel-track drive and meter-rail tooth-track drive wheel-set of any of claims 1-4 to change rails of a drive system, comprising:

when the vehicle is switched from the standard rail to the meter rail, the locking device (5) unlocks the wheel (1), the wheel (1) is moved from the spline shaft sleeve (3) to the bearing (4) by means of a rail change guide device on the rail, and then the locking device (5) locks the wheel (1), so that conversion from the standard rail to the meter rail is achieved; when the vehicle is switched from the meter rail to the standard rail, the locking device (5) unlocks the wheel, the wheel (1) is moved from the bearing (4) to the spline shaft sleeve (3) by means of the rail-changing guide device on the rail, then the wheel (1) is locked by the locking device (5), and the meter rail-to-standard rail conversion is achieved.