CN102530005A - Four-shaft locomotive steering frame arranged under shaft box - Google Patents

Abstract

The invention discloses a locomotive four-axle bogie whose frame is installed under the axle box, which is composed of two symmetrically placed front and rear two-axle bogies and an intermediate frame; Bridged under the front and rear wheel-to-axleboxes, the W-shaped frame uses secondary rubber stacks to support the middle frame; In the direction of the track, the W-shaped frame is provided with a single push-pull drawbar connected to the vehicle body traction seat. The invention installs the frame under the axle box, thereby reducing the installation height of the middle frame of the bogie, so that the B0B0-B0B0 axle-type eight-axle locomotive can be realized within the limit of the Chinese standard gauge. At the same time, due to the single-rod low-position traction, the structure is simplified and a higher adhesion utilization rate can be obtained.

Description

A four-axle locomotive bogie installed under the axle box

technical field

The patent of the invention belongs to the technical field of railway locomotive, especially heavy-duty locomotive bogie manufacturing technology. the

Background technique

At present, the main high-power locomotive for freight transportation in my country is an AC drive electric locomotive with a shaft power of 9600kW and a 2C0 shaft. Its curve passing performance is poor, and it is not suitable for mountain lines with a small curve radius. The single-section eight-axle locomotive can effectively increase the wheel-rail adhesion weight and the traction tonnage of the single-section locomotive. Compared with the 2C0-axle 9600kW six-axle locomotive in service in China, it has the advantages of large adhesion weight, wide constant power range, and good curve passing performance. Compared with domestic double locomotives and double-connected eight-axle locomotives, it has the advantages of low manufacturing and maintenance costs. The B0B0-B0B0 axle-type eight-axle locomotive has excellent linear dynamic performance and curve passing performance, and its structure is also a feasible way, such as the former Soviet T M7 diesel locomotive. B0B0-B0B0 axle locomotive consists of two four-axle bogies and a car body. The four-axle bogie locomotive adopts three-series suspension, and the two sets of two-axle bogies are connected by an intermediate frame to form a four-axle bogie. When the locomotive passes through the curve, since the eight axles of the locomotive can bear the lateral load of the wheel and rail, the curve passing performance of the locomotive can be greatly improved, which is beyond the reach of 2C0 axle locomotives and 3B0 axle locomotives. The three-suspension suspension of the locomotive can effectively attenuate the vertical and lateral vibration of the wheel-rail operation, so that the driver's cab can obtain a good comfort index. The technical difficulty of the four-axle bogie of a single-section eight-axle locomotive with standard gauge in China is that the locomotive bogie adopts three-series suspension, which makes the height of the upper plane of the bogie higher than the rail surface, which is difficult to realize due to the influence of the height limit of the locomotive.

Contents of the invention

In view of the above shortcomings of the prior art, the purpose of the present invention is to provide a bogie installed under the axle box, reduce the height of the upper plane of the middle frame of the bogie, and make the B0B0-B0B0 axle-type eight-axle locomotive in China standard gauge This is achieved within limits and enables the locomotive to achieve excellent running qualities in straight lines and curves. the

The object of the present invention is achieved by the following means. the

A four-axle bogie for a locomotive whose frame is installed under the axle box, which is composed of two symmetrically placed two-axle bogies and an intermediate frame; in each two-axle bogie: the two ends of the W-shaped frame span the Below the wheel-to-axle box, the W-shaped frame uses secondary rubber piles to support the intermediate frame; the intermediate frame is provided with a vibration-damping mechanism for connecting with the car body chassis on the upper part of the four-axle bogie; along the track direction, The W-shaped frame is provided with a single push-pull drawbar connected to the vehicle body traction seat. the

With the above structure, the present invention installs the frame under the axle box, thereby reducing the installation height of the middle frame of the bogie, so that the B0B0-B0B0 axle-type eight-axle locomotive can be realized within the limit of the Chinese standard gauge. At the same time, the locomotive can achieve excellent running quality in straight lines and curves due to the use of three-suspension suspension. the

Description of drawings

Figure 1 is the front view of the four-axle bogie. the

Figure 2 is a left view of the frame. the

Figure 3 is a top view of the frame. the

Detailed ways

The structure of the present invention will be further described below in conjunction with the accompanying drawings and embodiments. the

In the figure, 1-wheel set, 2-axle box structure, 3-W-shaped frame, 4-motor, 5-Z-shaped drawbar, 6-secondary rubber stack, 7-intermediate frame, 8-car body traction seat, 9-three-series vertical shock absorber, 10-first-series vertical shock absorber, 11-three-series spring, 12-transverse shock absorber, 13-first-series spring. the

In conjunction with Fig. 1, Fig. 2 and Fig. 3, the positional relationship of the components of the present invention can be seen. The present invention is composed of two two-axle bogies and an intermediate frame 7, and the two-axle bogies are composed of wheelsets 1 and W-shaped frames 3. The wheel set 1 and the W-shaped frame 3 are connected through a series of suspensions including an axle box 2 and a series of vertical shock absorbers 10 . Both ends of the W-shaped frame 3 are installed below the axle box structure 2 . The motor 4 is suspended by a shaft, and the other end is suspended on the W-shaped frame 3 . The W-shaped frame 3 utilizes the secondary rubber stack 6 to support the intermediate frame 7 . The intermediate frame 7 is connected with the car body chassis at the upper part of the four-axle bogie through three-series springs 11, three-series vertical shock absorbers 9 and three-series transverse shock absorbers 12. In the direction along the track, the W-shaped frame 3 is pulled to the middle of the four-axle bogie through two single push-pull drawbars 5, and is connected with the vehicle body traction seat 8 to transmit the wheel-rail longitudinal traction force and braking force. Elastic rubber joints are installed at both ends of the drawbar to adapt to the movement relationship and force relationship of the bogie. The installation of the motor adopts the same shaft-holding suspension mode as in the prior art, and its other end is hung on the frame, and in this program, it is hung on the W-shaped frame. the

By effectively reducing the height of the four-axle bogie, the structure of the present invention can realize a B0B0-B0B0 single-section eight-axle high-power locomotive that meets the limit of Chinese locomotives and vehicles, and enables the locomotive to achieve excellent straight line and curve running quality . the

Claims (3)

1. the framework locomotive that is installed in the axle box below use four-shaft steering, it is characterized in that, is made up of two axle truck and intermediate frames of former and later two symmetry placements; In each two axle truck: the across of W shape framework front and back wheel to axle box below, W shape framework utilizes two, and to be rubber metal pad become to support to middle framework shape; Intermediate frame is provided with the car body underframe bonded assembly damper mechanism that is used for four-shaft steering top; On direction along ng a path, said W shape framework is provided with singly recommends draw bar and is connected with the car body traction seat.

2. the locomotive that is installed in axle box below according to the said a kind of framework of claim 1 use four-shaft steering, it is characterized in that the across of said W shape framework is right in front and back wheel, is suspended on below the axle box through the single stage suspension device.

3. the locomotive that is installed in axle box below according to the said a kind of framework of claim 1 use four-shaft steering, it is characterized in that, saidly adopts three to be the suspension composition with four-shaft steering.

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