WO2019085979A1

WO2019085979A1 - A1a axle type bogie

Info

Publication number: WO2019085979A1
Application number: PCT/CN2018/113553
Authority: WO
Inventors: 陈国胜; 张又孔; 汪林峰; 龚晓彬; 邓小星
Original assignee: 中车株洲电力机车有限公司
Priority date: 2017-11-03
Filing date: 2018-11-02
Publication date: 2019-05-09
Also published as: CN107856694A

Abstract

Disclosed is an A1A axle type bogie, comprising a bogie structure (4), two end axle wheel pairs (5), a middle axle wheel pair (10) and two driving devices (16), wherein the two driving devices (16) are respectively connected to the two end axle wheel pairs (5); and if the end axle wheel pairs (5) are driving wheel pairs, the middle axle wheel pair (10) is a driven wheel pair, and the wheel diameter of the middle axle wheel pair (10) is less than that of the end axle wheel pair (5).

Description

A1A axle bogie

Technical field

The invention relates to the field of rail transit locomotive bogies, in particular to an A1A axle bogie.

Background technique

China's current railway policy stipulates that the axle load of a vehicle running on a high-speed passenger dedicated line needs to be less than or equal to 17T. However, there is currently no locomotive or power-concentrated EMU powertrain with a axle weight of less than 17 tons in the world. Therefore, the locomotive or power concentration It is difficult for EMUs to run across high-speed passenger lines and on existing lines. Although the 200km/h speed class passenger locomotive bogie technology is mature at home and abroad, the locomotive axle weight of these bogies is more than 18T. The locomotive of the existing bogie technology cannot achieve the axle weight less than or equal to 17T.

In order to solve the problem of large axle weight, some scholars at home and abroad have studied the lightweight design of the axle weight of the bogie with the A1A axle bogie. However, the main idea is to change on the traditional three-axis C0 bogie, that is, to remove the intermediate shaft drive device, adjust the suspension parameters of the intermediate shaft, so that each axle weight reaches the designed low axle weight requirement. However, the overall length of the bogie is almost unchanged from that of the conventional three-axis C0 bogie, that is, under the original three-axis C0 bogie size frame, the low axle weight requirement is achieved by reducing the power/size ratio. However, the prior art A1A axle bogie cannot be applied to the BO-BO type locomotive with better curve passing performance and better dynamic performance.

Summary of the invention

In order to solve the low axle weight A1A axle bogie can be applied to the traditional BO-BO type locomotive, the axle weight meets the requirements of the high speed passenger line. The invention provides a railway vehicle or a power concentrated EMU power axle with a axle load of ≤17 tons and a speed of 200km/h. The entire bogie length is suitable for the traditional BO-BO type passenger locomotive. The specific technical solutions are as follows.

An A1A axle bogie comprising a bogie frame, two end axle pairs, an intermediate axle pair and two driving devices, two driving devices respectively connected to the two end axle pairs, The end shaft pair is a drive wheel pair, the intermediate shaft pair is a driven wheel pair, and the intermediate shaft pair has a wheel diameter smaller than a wheel diameter of the end shaft pair.

The A1A axle bogie of the present invention is employed on a BO-BO type locomotive. On the one hand, the three wheelset bogies can reduce the axle weight to less than or equal to 17T with respect to the conventional two wheelset bogies; on the other hand, because the intermediate axle pair does not use the driving device, it is beneficial to reduce the steering. The longitudinal dimension of the frame, and the two-wheel-drive end-shaft pair and the non-driven intermediate-axle wheel have different diameters, the end shaft adopts large wheel diameter wheels, and the intermediate shaft adopts small wheel diameter wheels, which can further reduce two The distance between the end wheel pairs further reduces the longitudinal dimension of the bogie.

Further, the bogie frame includes a stringer and a beam, and the column is sunk in the middle. In this way, the installation surface of the two-stage spring frame can be lowered to adapt to the low floor function of the vehicle body.

Further, both ends of the pair of end shaft wheels are provided with end shaft axle boxes, and both ends of the pair of intermediate shaft wheels are provided with an intermediate shaft axle box, and the intermediate shaft axle box passes through a single tie rod and the bogie frame Connected, one side of the end axle housing facing the end of the bogie is connected to the bogie frame by a single tie rod. This arrangement can further reduce the distance between the axles, further limit the longitudinal dimension of the bogie, and ensure that the longitudinal dimension of the bogie can be controlled within 5650 mm, so that the overall longitudinal dimension of the bogie can meet the traditional BO-B0 passenger locomotive.

Further, a series of springs between the end shaft axle box and the bogie frame have a stiffness greater than a series of springs between the intermediate shaft box and the bogie frame. In this way, under the premise of ensuring the axle weight of the end axle wheel (≤17T), the axle weight of the intermediate axle can be adjusted according to the weight of the vehicle body, that is, the axle weight requirement is satisfied, and the end axle wheel pair with the driving force can be ensured. It has a large adhesion to the track, improving the driving effect and braking effect.

Further, a middle portion of the bogie frame is further provided with a traction mechanism, the traction mechanism includes a pair of drawbars, a pair of L-shaped links and a transverse link, the pair of drawbars being parallel to each other and respectively located at the Two ends of the pair of drawbars are respectively hinged to the vehicle body, and the other ends of the pair of drawbars are respectively hinged with one ends of the pair of L-shaped links, the pair of L-shaped The middle portions of the links are respectively hinged on the two side beams of the bogie frame, and the other ends of the pair of L-shaped links are respectively hinged to both ends of the transverse link. By arranging the traction mechanism in the middle of the bogie frame, the longitudinal dimension of the bogie can be further reduced. At the same time, the traction device can be used to distribute the traction force of the bogie to both sides of the bogie, which is beneficial to improve the stability of the vehicle body on the bogie.

Compared with the prior art, the beneficial effects of the present invention are:

(1) The bogie of the present invention adopts the A1A axle bogie structure type, which can meet the requirements of low axle weight. Two of the belt-driven end-shaft pairs and the non-driven intermediate-axle wheels have different diameters, the end shafts are large-wheel wheels, and the intermediate shafts are small-wheel wheels. The above measures can try not to increase the longitudinal dimension of the traditional passenger locomotive B0 bogie. The intermediate shaft adopts a small wheel through the wheel, which can realize the sinking of the secondary spring frame mounting surface to adapt to the low floor body function.

(2) The axle box pull rods of the two ends of the bogie of the present invention adopt an external arrangement, which compresses the longitudinal dimension of the bogie, and can minimize the longitudinal dimension of the B0 bogie of the conventional passenger locomotive.

(3) The bogie of the present invention adopts a bilateral parallel drawbar structure, which can further limit the longitudinal dimension of the bogie.

(4) The bogie end shaft power wheel of the present invention adopts different stiffnesses for a series of springs of a pair of springs and intermediate shaft wheel pairs. Under the premise of ensuring the axle weight of the end shaft power wheel, the axle weight of the intermediate shaft can be according to the vehicle body. The weight is adjusted.

(5) Through the above measures, the longitudinal dimension of the bogie can be controlled within 5650mm, so that the overall longitudinal dimension of the bogie meets the requirements of the traditional BO-B0 passenger locomotive, and the axle load is ≤17T.

DRAWINGS

Figure 1 is a front elevational view of the A1A axle bogie of the present invention.

2 is a top plan view of the A1A axle bogie of the present invention.

In the figure: 1-first mount, 2-first spring, 3-first single tie rod, 4-steel frame, 5-end axle pair, 6-traction rod, 7-second system vertical stop Block, 8-car body 9-second spring, 10-internal axle pair, 11-second single lever, 12-second mount, 13-end wheel, 14-axis axlebox, 15-intermediate axle Axle box, 16-drive, 17-transverse link, 18-intermediate wheel, 19-second spring, 20-L link, 41-end beam, 42-intermediate beam, 43-side beam, 81-body bolster, 82-body floor.

Detailed ways

The invention is further described in detail below with reference to the accompanying drawings.

Referring to Figures 1-2, an A1A axle bogie includes a bogie frame 4, two end axle pairs 5, an intermediate axle pair 10 and two drive units 16, two drive units 16 and two respectively The end shaft wheel pair 5 is connected, the end shaft wheel pair 5 is a driving wheel pair, the intermediate shaft wheel pair 10 is a driven wheel pair, and the intermediate shaft wheel pair 10 has a wheel diameter smaller than the end shaft wheel pair 5 The wheel diameter, preferably, the end shaft wheel pair 5 employs a 1250 mm diameter end wheel 13 and the intermediate shaft wheel pair 10 employs a 920 mm diameter intermediate wheel 18; the bogie frame 4 includes side sills (longitudinal beams) 43 and The beam is sunk in the middle of the longitudinal beam, and the frame mounting surface of the secondary spring 9 is sunk to meet the height requirement of the bolster 81 and the floor surface 82 of the vehicle body 8. The sinking portion of the longitudinal beam is also provided with The second type of vertical stop 7; the two driving devices 16 are arranged in a suspension manner, one end is suspended on the end beam 41 of the bogie frame 4, and the other end is suspended on the intermediate beam 42 of the bogie frame 4; An end shaft axle box 14 is disposed at both ends of the shaft wheel pair 5, and an intermediate shaft axle box 15 is disposed at both ends of the intermediate shaft wheel pair 10, and the intermediate shaft The box 15 is connected to the second mounting seat 12 of the bogie frame 4 via a second single pull rod 11 that faces the side of the bogie end through the first single tie rod 3 and the bogie frame The first mount 1 of 4 is connected. With the A1A axle bogie of the present invention, the axle weight can be reduced to less than or equal to 17T; and since the intermediate axle pair does not use the driving device, it is advantageous to reduce the longitudinal dimension of the bogie, and the two axle-driven end axle wheels The diameter of the wheel is different for the intermediate shaft wheel with and without the drive. The end shaft adopts the large wheel diameter wheel, and the intermediate shaft adopts the small wheel diameter wheel, which can further reduce the distance between the two end shaft wheel pairs, further reducing The longitudinal dimension of the bogie; the single-bar linkage of the axle box of the two ends of the invention adopts an external arrangement, which can further reduce the distance between the axles, limit the longitudinal dimension of the bogie, and ensure that the longitudinal dimension of the bogie can be controlled. Within 5650mm, the overall longitudinal dimension of the bogie meets the traditional BO-B0 passenger locomotive.

Preferably, the stiffness of the first series of springs 2 between the end axle housing 14 and the bogie frame 4 is greater than the second series between the intermediate axle housing 15 and the bogie frame 4 The stiffness of the spring 19. In this way, under the premise of ensuring the axle weight of the end axle wheel (≤17T), the axle weight of the intermediate axle can be adjusted according to the weight of the vehicle body, that is, the axle weight requirement is satisfied, and the end axle wheel pair with the driving force can be ensured. It has a large adhesion to the track, improving the driving effect and braking effect.

Preferably, the middle portion of the bogie frame 4 is further provided with a traction mechanism including a pair of drawbars 6, a pair of L-shaped links 20 and a transverse link 17, the pair of drawbars 6 being parallel to each other And respectively located at two sides of the bogie frame 4, one ends of the pair of drawbars 6 are respectively hinged with the vehicle body 8, and the other ends of the pair of drawbars 6 are respectively associated with the pair of L-shaped links 20 One end of the pair of L-shaped links 20 is hinged on the two side beams 43 of the bogie frame 4, and the other ends of the pair of L-shaped links 20 are respectively connected to the lateral direction. Both ends of the rod 17 are hinged. By arranging the traction mechanism in the middle of the bogie frame 4, the longitudinal dimension of the bogie can be further reduced. At the same time, the traction device can be used to distribute the traction force of the bogie to both sides of the bogie, which is beneficial to improve the stability of the vehicle body on the bogie.

Preferably, the two driving devices 16 are arranged in an oblique symmetry, the power shaft at the end adopts a wheel brake type, and the intermediate non-power auxiliary shaft may adopt a wheel brake or a shaft brake type.

It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not limited thereto; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that The technical solutions described in the foregoing embodiments are modified, or the equivalents of the technical features are replaced. The modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

An A1A axle bogie characterized by comprising a bogie frame, two end axle pairs, an intermediate axle pair and two driving devices, and two driving devices are respectively connected with the two end axle pairs The end shaft wheel pair is a driving wheel pair, the intermediate shaft wheel pair is a driven wheel pair, and the intermediate shaft wheel pair has a wheel diameter smaller than a wheel diameter of the end shaft wheel pair.
The A1A axle bogie according to claim 1, wherein the bogie frame includes a longitudinal beam and a beam, and the longitudinal beam is sunk in the middle.
The A1A axle type bogie according to claim 1, wherein both ends of the pair of end shaft wheels are provided with an end shaft axle box, and the two ends of the intermediate shaft wheel pair are provided with an intermediate shaft axle box The intermediate shaft axle box is connected to the bogie frame by a single tie rod, and the side of the end shaft axle box facing the end of the bogie is connected to the bogie frame by a single tie rod.
An A1A axle type bogie according to claim 1, wherein a series of springs between said end shaft axle box and said bogie frame are stiffer than said intermediate shaft axle box and said steering The stiffness of a series of springs between the shelves.
The A1A axle type bogie according to any one of claims 1 to 4, wherein a middle portion of the bogie frame is further provided with a traction mechanism, and the traction mechanism includes a pair of drawbars and a pair of L a pair of drawbars that are parallel to each other and are respectively located at two sides of the bogie frame, and one ends of the pair of drawbars are respectively hinged to the vehicle body, and the pair of drawbars are respectively One end is respectively hinged with one end of the pair of L-shaped links, and the middle portions of the pair of L-shaped links are respectively hinged on two side beams of the bogie frame, and the pair of L-shaped links are further One end is hinged to both ends of the transverse link, respectively.