CN115447620A - Wheelset drive system for standard gauge wheel-rail drive and meter-gauge rack drive - Google Patents

Abstract

The invention discloses a wheel set drive system driven by a wheel-rail drive for a standard rail and a rack drive for a meter-gauge. The wheel set drive system includes an axle, a wheel, a rack wheel mounted on the axle through bearings, a locking device, a driving device and a gear transmission system driven by the driving device; the final gear of the gear transmission system is fixed to the axle The final stage gear and the rack wheel are fixedly connected through a connecting piece; the wheel is mounted on the axle through a bearing or a spline bushing arranged on the axially outer side of the bearing, and the spline bush is in interference connection with the axle; The above-mentioned wheels are locked on the spline bushing by a locking device in the standard rail section or locked on the bearing by a locking device in the meter-gauge section. The invention can make the rack vehicle applicable to both meter gauge and standard gauge railways by changing the transverse distance of the wheels.

Description

Wheelset drive system for standard gauge wheel-rail drive and meter-gauge rack drive

technical field

The invention relates to a wheel set drive system driven by wheel rails for standard rails and gear rails for meter rails, and belongs to the technical field of rail vehicles.

Background technique

Most of the current rack car bogies are bogies that can only adapt to one gauge, and cannot be used for meter-gauge and standard-gauge railways at the same time.

Most of the trunk railways in our country are standard rails, and most of the cog railways are meter gauge. Therefore, cog vehicles cannot be applied to trunk railways, which greatly limits the popularization and application of cog vehicles.

The previous patent CN103938501B applied by the applicant mainly studies the wheel-rail gauge conversion of the meter-gauge nested in the standard rail, and does not involve the conversion of the rack wheel and the wheel gauge.

In addition, the patent publication number CN113830123A previously applied by the applicant discloses a track-changing bogie. The track-changing device includes a bearing sleeve, a bearing assembly and at least two locking units. The bearing sleeve is arranged on the axle box Inside, and the bearing sleeve can move axially along the inner wall of the axle box. The bearing assembly includes a first bearing and a second bearing, the inner ring of the first bearing is fixed on the outer circumference of the connecting sleeve, the outer ring of the first bearing is installed inside the bearing sleeve; the second The inner ring of the bearing is fixed on the axle, and the outer ring of the second bearing is installed on the end cover. The wheel-to-axlebox track change device with double locking units and double bearings can realize a large range of axial movement of the wheel relative to the axle box and the axle, so as to achieve the purpose of track change. Two locking units are arranged axially at intervals on the axle box, so that the track changing device has two locking states: the meter-gauge state and the standard-gauge state, so as to realize the interconnection between the standard rail and the meter-gauge of the locomotive or EMU intercommunication. The variable-gauge bogie can realize the wheel-rail drive between the meter-gauge and the standard-gauge, but cannot realize the gear-rail drive of the meter-gauge railway, and the track-changing device is relatively complicated and the manufacturing cost is high.

Contents of the invention

The present invention aims to provide a wheel-set drive system for standard-gauge wheel-rail drive and meter-gauge rack-gauge drive. The wheel-set drive system can make rack vehicles suitable for both meter-gauge and standard-gauge railways by changing the lateral distance of the wheels. .

In order to achieve the above object, the technical solution adopted in the present invention is:

A wheel set drive system for standard rail drive and meter gauge rack drive system, including axles, wheels, rack wheels mounted on axles through bearings, locking devices, driving devices and gears driven by the driving devices transmission system; the final gear of the gear transmission system is fixedly connected to the axle, and the final gear is fixedly connected to the rack wheel through a connecting piece; the wheel is installed on the On the axle, the spline bushing is in interference connection with the axle;

The wheel is locked on the spline bushing by a locking device on the standard rail section or locked on the bearing by the locking device on the meter-gauge section.

Therefore, when running on the standard rail, the wheel is located at the spline bushing on the axle, and the wheel is locked by the locking device. At this time, the wheel and the axle realize synchronous movement through the spline. At this time, the driving device transmits power to the final gear to drive the axle to rotate, and the axle drives the wheel to rotate through the spline bushing to realize wheel-rail drive. The rack wheel and the final gear are fixedly connected. At this time, the rack wheel is also in a rotating state. Since there is no rack in the middle of the standard track, the rack wheel is idling and will not transmit power to the vehicle.

When running on the meter rail, the wheel is located at the bearing on the axle, and the wheel is locked by the locking device. The driving device transmits power to the final gear and the rack wheel, and the final gear drives the axle to rotate. Since the axle and the wheel are decoupled through bearings, the axle does not transmit power through the wheel. At this time, the wheel and the axle realize motion decoupling through the bearing, so as to avoid the situation that the wheel slips on the track caused by the inconsistency of the linear speed of the rack wheel and the wheel. The rack wheel is engaged with the rack in the middle of the track to realize power transmission and drive the vehicle forward.

According to the embodiments of the present invention, the present invention can also 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; wherein the first gear, the second gear and the The three gears form a gear pair, the third gear and the fourth gear are coaxially driven, and the fourth gear and the fifth gear form a gear pair; the power output end of the driving device is connected with the axle of the first gear.

In one preferred embodiment, in order to facilitate disassembly, the fifth gear and the rack wheel are fixedly connected by bolts.

In one preferred embodiment, splines are provided on the inner surface of the wheel seat of the wheel, and a bell mouth is provided at the outer end of the spline, and the big mouth of the bell mouth faces the axle end of the axle. This design makes it easier for the wheel to slide into the spline bushing when the meter gauge is converted into a standard gauge.

Based on the same inventive concept, the present invention also provides a method for changing the track using the wheel pair drive system driven by the wheel-rail drive for the standard rail and the rack drive for the meter-gauge, which includes:

When the vehicle is switched from the standard rail to the meter rail, the locking device will unlock the wheel, rely on the track changing guide device on the track to move the wheel from the spline bushing to the bearing, and then the locking device will lock the wheel to realize from Conversion from standard gauge to meter gauge;

When the vehicle is switched from meter gauge to standard gauge, the locking device will unlock the wheel, rely on the track changing guide device on the track to move the wheel from the bearing to the spline bushing, and then the locking device will lock the wheel to realize from Conversion from meter gauge to standard gauge.

Compared with the prior art, the beneficial effect of the present invention is: the present invention can make rack vehicles applicable to meter-gauge and standard-gauge railways at the same time by changing the lateral distance of the wheels. The hybrid drive of rack and wheel is realized, and the structure is greatly simplified, which can greatly promote the popularization and application of rack vehicles in our country.

Description of drawings

Fig. 1 is a schematic diagram of a driving system of a variable gauge wheel set according to an embodiment of the present invention;

Fig. 2 is a schematic diagram of the variable gauge wheel set system in Fig. 1;

Fig. 3 is a schematic diagram of a meter-gauge wheel pair in Fig. 1;

Fig. 4 is a schematic diagram of a standard rail wheel pair in Fig. 1;

Fig. 5 is a schematic diagram of the wheel in Fig. 1;

Fig. 6 is a side view of the wheel in Fig. 5 (viewed axially from the axle shaft end);

Fig. 7 is the installation schematic diagram of wheel;

Fig. 8 is a schematic diagram of the state of the wheels before and after the track change.

In the picture

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

detailed description

The present invention will be described in detail below with reference to the accompanying drawings and examples. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. For the convenience of description, if the words "up", "down", "left" and "right" appear in the following, it only means that the directions of up, down, left and right are consistent with the drawings themselves, and do not limit the structure.

As shown in Figure 1, the wheel set driving system of the standard rail drive and the meter rail rack 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 Gear 9, fourth gear 10, fifth gear 11, rack wheel 12, brake drum 13.

The motor 6 outputs power, which is transmitted to the axle shaft 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 shaft 2, and the fifth gear 11 and the rack wheel 12 are connected by bolts. A bearing 4 is arranged between the rack wheel 12 and the axle shaft 2 to decouple the two.

As shown in Figure 2-4, the axle shaft 2 and the bearing 4 are in interference connection, and the axle shaft 2 and the spline bushing 3 are in interference connection.

When running on the standard rail, the wheel 1 is located at the spline bushing 3 on the axle 2, and the wheel 1 is locked by the locking device 5. At this time, the wheel 1 and the axle 2 move synchronously through the spline.

When running on the meter rail, the wheel 1 is located at the bearing 4 on the axle 2, and the wheel 1 is locked by the locking device 5. At this time, the motion decoupling of the wheel 1 and the axle 2 is realized through the bearing 4, so as to avoid the rack wheel 12 and Inconsistent linear velocity of wheel 1 causes wheel 1 to slip on the track.

As shown in Figure 5-7, splines are arranged on the inner surface of the wheel seat of the wheel 1, and bell mouths are arranged on the outer end of the splines, so that the gauge of the wheel 1 can be changed from meter gauge to standard gauge.

As shown in Figure 8, when the vehicle switches from the standard rail to the meter rail, the locking device 5 unlocks the wheel 1, and the wheel 1 moves from the axle spline bushing 3 to the bearing 4 by relying on the track changing guide device on the track , and then the locking device 5 locks the wheel 1 to realize the conversion from the standard rail to the meter rail.

When the vehicle switches from the meter gauge to the standard gauge, the locking device 5 will unlock the wheel, relying on the track changing guide device on the track, the wheel 1 will move from the bearing 4 to the axle spline bushing 3, and then the locking device 5 will The wheel 1 is locked to realize the conversion from the meter gauge to the standard gauge.

The rack wheel 12 of this embodiment does not break away from the bearing 4 all the time, and the rack wheel 12 is in the middle position and does not move. Locking device 5 locks the wheel, and the track-changing guide device guides the wheel to move axially along the wheel, all of which are mature technologies and will not be described in detail here.

The content of the above-mentioned embodiments should be understood as that these embodiments are only used to illustrate the present invention more clearly, and are not intended to limit the scope of the present invention. After reading the present invention, those skilled in the art will understand the various equivalents of this embodiment Modifications in form all fall within the scope defined by the appended claims of the present invention.

Claims (5)

1. A wheel pair drive system for standard rail drive and meter gauge rack drive, comprising axle (2), wheels (1), rack wheels (12) mounted on the axle (2) through bearings , a locking device, a driving device and a gear transmission system driven by the driving device; it is characterized in that: the final gear of the gear transmission system is fixedly connected to the axle (2), and the final gear and the rack wheel (12) pass through The connecting piece is fixedly connected; the wheel (1) is installed on the axle (2) through a bearing or a spline bushing (3) arranged on the axially outside of the bearing (4), and the spline bushing (3) is connected to the axle ( 2) interference connection; The wheel (1) is locked on the spline bushing (3) by a locking device on the standard rail section or on the bearing (4) by the locking device on the meter-gauge section. 2. standard rail according to claim 1 is driven by wheel-rail and meter rail is driven by rack, it is characterized in that, described gear transmission system comprises first gear (7), second gear (8) ), the third gear (9), the fourth gear (10) and the fifth gear (11) as the final gear; where 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 coaxially driven, the fourth gear (10) and the fifth gear Gear (11) forms a gear pair; The power output end of the driving device is connected with the axle of the first gear (7). 3. the wheel pair drive system for standard rail drive and meter gauge rack drive according to claim 2, characterized in that, the fifth gear (11) and the rack wheel (12) are fixed by bolts connect. 4. The wheel pair drive system for standard rail drive and meter gauge rack drive according to claim 1, characterized in that splines are arranged on the inner surface of the wheel seat of the wheel (1), and the splines The outer end is provided with a bell mouth, and the big mouth of the bell mouth is towards the axle end of the axle (2). 5. a method utilizing the wheel-to-rail drive for the standard rail described in any one of claims 1-4 and the wheel-to-drive system for the meter-gauge rack drive, it is characterized in that, comprising: When the vehicle switches from the standard rail to the meter rail, the locking device (5) unlocks the wheel (1), and the wheel (1) is moved from the spline bushing (3) to the bearing ( 4), then the locking device (5) locks the wheel (1) to realize the conversion from the standard gauge to the meter gauge; when the vehicle switches from the meter gauge to the standard gauge, the locking device (5) unlocks the wheel, The wheel (1) is moved from the bearing (4) to the spline bushing (3) by relying on the track-changing guide device on the track, and then the locking device (5) locks the wheel (1) to achieve Transformation of the standard track.

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