CN107554549B - Guide system on train bogie and working method thereof - Google Patents

Abstract

The invention discloses a guide system on a train bogie and a working method thereof, wherein a bearing wheel system and a guide system are arranged on the train bogie, the guide system comprises a guide shaft mounting frame arranged on the bearing wheel system and a guide shaft box arranged on the guide shaft mounting frame, a guide shaft is vertically arranged in the guide shaft box, the lower part of the guide shaft corresponds to the inner side of a steel rail, and the guide shaft is provided with a power device. The functions are as follows: the guide shaft in the guide system can replace the cancelled wheel rim on the bearing wheel to play the role of guiding the train bogie, so that the guide system can be used for eliminating the length difference between the steel rail side grinding device and the inner rail and the outer rail of the coordination curve section.

Description

A guiding system on a train bogie and its working method

technical field

The invention belongs to the technical field of rail transit, and in particular relates to a guiding system on a train bogie and a working method thereof.

Background technique

As shown in Figure 8, it is a schematic diagram of a traditional load-carrying wheel structure. A rim 25 is arranged on the load-bearing wheel 24. The setting purpose of the rim 25 on the load-bearing wheel 24 is to play a guiding role for the train bogie, but because the load-bearing wheel The radius of the tread bearing the vertical load is different from the radius of the rim 25 of the load-carrying wheel 24, and the corresponding linear velocity when the wheelset rotates is different, but in the process of the train advancing, the linear velocity of the train relative to the rail top and the rail side is the same. Therefore, when the rim 25 of the load-carrying wheel 24 comes into contact with the side of the rail, sliding friction will inevitably occur, resulting in side wear of the rail.

In addition, the tread of the traditional load-carrying wheel 24 is set with a taper of 1/20-1/40. However, when passing through a curved section, the centrifugal force of the train will move the train wheels to the outside, so that the bogie The difference between the length of the inner and outer rails of the coordination curve section. However, the bogie coordinates the difference between the lengths of the inner and outer rails in the curve section, which is random and uncontrollable. The outward shifting force of the train wheel set is affected by the speed of the train, the superelevation value set in the curve section, and the line status of the curve section. and so on, and affected by the distance between the wheel and the rail, but for a certain curve section, the difference between the length of the inner and outer rails is a constant value. Due to the existence of the rim 25 of the traditional load-carrying wheel 24, the maximum lateral movement of the load-bearing train wheel 24 is limited. Therefore, when the train passes through the curved section, due to the difference in the length of the inner and outer rails, sliding friction will inevitably occur between the load wheel 24 treads and the top surface of the rail, that is to say, the top of the rail will be worn down.

In order to eliminate the side wear and vertical wear of the rail at the same time, it is necessary to set up the guide wheel system of the train bogie. This system requires that the guide wheel mounting frame can only slide horizontally relative to the wheel-to-axle box, and no vertical relative movement occurs. In order to ensure that the guide wheels do not detach from the rails, so as to avoid train derailment accidents, and at the same time realize the lateral movement of the relative wheel pair; at the same time, the guide wheel mounting frame can only slide vertically relative to the bogie, and does not move laterally relative to each other , so as to ensure the guiding effect of the guide wheel on the bogie, so as to avoid the derailment accident of the train. Through this design, the vibration reduction of the bogie will not be affected, and the train will not derail, effectively eliminating the side wear between the load-bearing wheels and the rails, and at the same time actively coordinating the control of the length difference between the inner and outer rails when the train passes through a curved section Devices and methods lay the foundation.

Contents of the invention

The purpose of the present invention is to provide a guiding system on the train bogie and its working method according to the deficiencies of the above-mentioned prior art. A mounting frame with a guide shaft is fixedly installed on the axle box without a rim load-bearing wheel, so as to realize the guidance of the train bogie through the rotational contact between the guide shaft on the mounting frame and the side of the rail during the running of the train.

The object of the present invention is realized by the following technical solutions:

A guiding system on a train bogie, on which a load-carrying wheel system and a guiding system are installed, characterized in that the guiding system includes a guide shaft mounting frame installed on the load-bearing wheel system and a guide shaft mounting frame installed on the The guide shaft box on the guide shaft mounting frame, the guide shaft box is vertically provided with a guide shaft, and the lower part of the guide shaft corresponds to the inner side of the rail.

The guide shaft is composed of an upper large-diameter section, a lower small-diameter section, and a middle transition section connecting the two; the diameter of the upper large-diameter section is 100-200mm; the diameter of the lower small-diameter section is 25-30mm, The height is 60-70mm, and its lower end surface is 25-30mm lower than the top surface of the rail; the height of the middle transition section is 400-600mm; the center distance of the lower small-diameter section of the guide shaft on both sides is 1380-1396mm.

The upper large-diameter section is a hollow structure, and the inner diameter of the hollow structure is 20-25mm.

The load-bearing wheel system includes an axle, rimless load-bearing wheels arranged on both sides of the axle, and an axle box supporting the rotation of the axle. The axle box is installed under the train bogie through a series of springs.

The rimless load-bearing wheels on both sides are respectively equipped with a guide shaft mounting frame, which is in the shape of "Π" and is composed of an inner guide shaft mounting frame and an outer guide shaft mounting frame. ; Wherein, the end of the inner guide shaft installation frame is connected to the axle through the end axle box, and the end of the outer guide shaft installation frame is fixedly connected to the axle box.

A horizontal sliding support is connected between the guide shaft box and the guide shaft mounting frame on the load-bearing wheel system, and a vertical sliding support is connected between the guide shaft box and the train bogie. sliding support.

The guide shaft installation frame is provided with a guide shaft power device, and the guide shaft power device is connected to drive the guide shaft through a guide shaft power transmission device.

A working method related to the guiding system on any one of the train bogies, characterized in that the working method includes the following steps: during the running of the train, the guiding shaft in the guiding system rotates and guides, and the guiding shaft is controlled The relative speed between the lower small-diameter section and the theoretical contact surface of the rail side is the same as the forward speed of the train.

The rotation speed of the guide shaft is controlled by the guide shaft power device through the guide shaft power transmission device.

The guide shaft and the load-bearing wheel system produce lateral sliding under the action of the horizontal sliding support and maintain the same take-off and landing vertically, and the guide shaft and the train bogie function on the vertical sliding support The bottom remains relatively fixed in the lateral direction and produces relative displacement in the vertical direction.

The invention has the advantages that the structure of the guide system is simple, and the guide shaft can replace the canceled wheel rim on the load-bearing wheel to undertake the guiding function of the train bogie, thereby eliminating the side grinding between the wheel rim and the rail; the guide shaft can be combined with the load-bearing wheel The system maintains the same take-off and landing in the vertical direction, and can move relatively in the lateral direction to prevent the guide shaft from leaving the side of the rail and lead to guide failure. At the same time, it can control the lateral displacement of the wheel set to achieve the length difference between the inner and outer rails of the coordination curve section; the guide shaft It can have horizontal relative displacement with the wheel set, which increases the lateral movement of the wheel set from the surface; the guide shaft can be kept relatively fixed with the train bogie in the transverse direction, so that the guide shaft can effectively maintain the lateral position of the train bogie, and then Effectively maintain the lateral position of the carriage.

Description of drawings

Fig. 1 is the guide system and the load-carrying wheel system structural representation on the train bogie among the present invention;

Fig. 2 is the structural representation of guidance system in the present invention;

Fig. 3 is a schematic view of the structure of the guide shaft in the present invention;

Fig. 4 is the A-A sectional schematic diagram in Fig. 1 of the present invention;

Fig. 5 is the B-B sectional schematic diagram in Fig. 3 of the present invention;

Fig. 6 is a schematic structural view of a rimless load-bearing wheel in the present invention;

Fig. 7 is a schematic cross-sectional view of C-C in Fig. 2 of the present invention;

Fig. 8 is a structural schematic diagram of a load-bearing wheel with a rim in the prior art.

Implementation

The features of the present invention and other relevant features are described in further detail below in conjunction with the accompanying drawings through the embodiments, so as to facilitate the understanding of those skilled in the art:

As shown in Figure 1-8, the marks 1-25 in the figure are: train bogie 1, guide system 2, vertical sliding support 3, slide rail 3a, slider 3b, load-bearing wheel system 4, axle box 5, axle 6 , rimless load-bearing wheel 7, guide shaft mounting frame 8, guide shaft power device 9, guide shaft power transmission device 10, guide shaft 11, guide shaft box 12, upper large diameter section 13, middle transition section 14, lower small Diameter section 15, outer guide shaft mounting frame 16, inner guide shaft mounting frame 17, end axle box 18, wheel rim 19, spoke plate 20, wheel hub 21, axle hole 22, horizontal sliding support 23, slide rail 23a, slide Block 23b, bearing wheel 24, rim 25.

Embodiment: as shown in Fig. 1, 4, present embodiment is specifically related to a kind of guidance system on the train bogie and working method thereof, is provided with load-carrying wheel system 4 and guide system 2 on train bogie 1, load-carrying wheel system In 4, the rimless load-bearing wheel 7 is used, thereby eliminating the side grinding between the rim and the rail, and the guide system 2 is installed on the load-bearing wheel system 4, which is used to guide the train bogie 1 during the running of the train .

As shown in Figures 1 and 4, the load-bearing wheel system 4 in this embodiment is fixed below the train bogie 1 through a series of springs (not shown in the figure, omitted). The load-bearing wheel system 4 specifically includes an axle 6, Both sides of the axle 6 are supported by the axle box 5 for rotation, and rimless load-bearing wheels 7 are installed on both sides of the axle 6. The aforementioned primary springs are specifically arranged between the axle box 5 and the train bogie 1; as shown in the figure 6, the center of the rimless load-bearing wheel 7 has an axle hole 22, and from the axle hole 22 outwards are the hub 21, the spoke plate 20, and the rim 19. In order to eliminate the side grinding phenomenon of the rail, the wheelless wheel in this embodiment The rim load-bearing wheel 7 has canceled the previous rim structure, and its entire outer surface is a tapered tread structure, that is, the outer surface of the rim 19 is a slope surface with a certain taper; In this embodiment, the width of the tapered tread of the rimless load-bearing wheel 7 is widened, so that the rimless load-bearing wheel 7 can allow a certain lateral swing during the running of the train, and when turning through a curved section, it can coordinate the inside and outside. It has stronger ability in terms of rail length difference and reduces rail top corrugation.

As shown in Figures 1-7, the guide system 2 in this embodiment is installed and fixed on the load-bearing wheel system 4, and the guide system 2 specifically includes guide shaft mounting frames 8 respectively corresponding to the rimless load-bearing wheels 7 on both sides. , the guide shaft mounting frame 8 is specifically installed on the load-bearing wheel system 4, and each guide shaft mounting frame 8 is respectively provided with a guide shaft box 12, and a vertically arranged guide shaft 11 is provided in the guide shaft box 12; In addition, a guide shaft power device 9 is also provided on the guide shaft mounting frame 8, which is used to provide the rotational power of the guide shaft 11, and connects the upper part of the transmission guide shaft 11 through the guide shaft power transmission device 10, so as to drive the guide shaft 11 in the Rotate at controlled speed. It should be noted that, between the guide shaft box 12 and the guide shaft mounting bracket 8, a horizontal sliding support 23 that can generate relative sliding in the horizontal direction is provided, and the horizontal sliding support 23 is fixed on the guide shaft box 12. The slide rail 23a and the slider 23b fixed on the guide shaft mounting frame 8 are composed of the two matched with each other and can produce relative movement in the horizontal direction; in addition, there is a device between the guide system 2 and the train bogie 1 that can produce vertical movement. Relatively sliding vertical sliding support 3, the vertical sliding support 3 is composed of a slide rail 3a fixed on the guide system 2 and a slider 3b fixed on the train bogie 1, the two match each other and can produce a vertical Relative movement in direction.

As shown in Figures 3 and 5, the guide shaft 11 in this embodiment specifically adopts a three-stage structure, including an upper large-diameter section 13, a middle transition section 14, and a lower small-diameter section 15 connected in sequence. The upper large-diameter section 13 is designed according to the lateral force, the lower small-diameter section 15 is determined according to the gap between the switch positions, and the middle transition section 14 is used as a reasonable transition section between the upper large-diameter section 13 and the lower small-diameter section 15, thereby preventing stress concentration; Among them, the upper large-diameter section 13 adopts a hollow structure to reduce the moment of inertia, and the hollow part needs to be smooth to prevent stress concentration. Specifically, the diameter of the upper large-diameter section 13 is 100-200mm, and the inner diameter of the hollow structure is 20-25mm; the diameter of the lower small-diameter section 15 is 25-30mm, and the height is 60-70mm. The center distance of the small-diameter section 15 is 1380-1396mm, and the standard distance inside the rail is 1435mm, considering a certain distance; the height of the middle transition section 14 is 400-600mm.

As shown in Figure 4, a group of guide shaft mounting frames 8 in this embodiment are respectively arranged on both sides of the axle 6, and correspond to the installation positions of the rimless load-bearing wheels 7, and each group of guide shaft mounting frames 8 has a shape of "Π "type, which is specifically composed of the outer guide shaft mounting frame 16 and the inner guide shaft mounting frame 17; wherein, the outer guide shaft mounting frame 16 is located, and its end is connected and fixed on the axle box 5, while the inner guide shaft mounting frame 17 is located at the inner side of the rimless load-bearing wheel 7, and its end is connected to the axle 6 through the end axle box 18; connected, and the setting position of the guide shaft box 12 is located in front or rear of the rimless load-carrying wheel 7 .

As shown in Figures 1-5, the working method of the guide system on the train bogie in this embodiment includes the following steps: during the operation of the train, power is provided by the guide shaft power device 9 and driven by the guide shaft power transmission device 10 The guide shaft 11 rotates and guides, so that the surface rotation linear velocity of the lower small-diameter section 15 of the guide shaft 11 at the same height as the side of the rail is basically the same as the train speed; With the setting of the support 23, the guide shaft 11 and the load-carrying wheel system 4 maintain the same take-off and landing in the vertical direction, and can move relatively in the lateral direction, so as to prevent the guide shaft 11 from leaving the side of the rail and lead to guide failure, and at the same time, the lateral direction of the wheel set can be controlled. Displacement to realize the length difference between the inner and outer rails of the coordinated curve section; through the setting of the vertical sliding support 3, the guide shaft 11 and the train bogie 1 remain relatively fixed in the lateral direction, so that the guide shaft 11 can effectively maintain the position of the train bogie 1 lateral position, thereby effectively maintaining the lateral position of the compartment.

Claims (8)

1. A guide system on a train bogie is provided with a bearing wheel system and a guide system, and is characterized in that the guide system comprises a guide shaft mounting frame arranged on the bearing wheel system and a guide shaft box arranged on the guide shaft mounting frame, a guide shaft is vertically arranged in the guide shaft box, and the lower part of the guide shaft corresponds to the inner side of a steel rail; a horizontal sliding support is connected between the guide shaft box and the guide shaft mounting frame on the bearing wheel system, and a vertical sliding support is connected between the guide shaft box and the train bogie; the guide shaft power device is arranged on the guide shaft mounting frame and is connected with and drives the guide shaft through a guide shaft power transmission device.

2. The steering system of claim 1, wherein said steering shaft comprises an upper large diameter section, a lower small diameter section, and a middle transition section connecting said upper large diameter section and said lower small diameter section; the diameter of the upper large-diameter section is 100-200mm; the diameter of the lower small-diameter section is 25-30mm, the height of the lower small-diameter section is 60-70mm, and the lower end face of the lower small-diameter section is 25-30mm lower than the top face of the steel rail; the height of the middle transition section is 400-600mm; the center distance between the small-diameter sections of the lower parts of the guide shafts on the two sides is 1380-1396mm.

3. The guidance system for a train bogie as claimed in claim 2, wherein said upper large diameter section is a hollow structure having an inner diameter of 20-25mm.

4. The steering system of claim 1, wherein said axle bearing wheel system comprises an axle, a rimless wheel bearing disposed on each side of said axle, and a housing supporting the axle for rotation, said housing being mounted below said train bogie via a series of springs.

5. The guiding system on a train bogie according to claim 4, wherein the guiding axle mounting brackets are respectively mounted at the non-rim bearing wheels at two sides, are n-shaped and are formed by connecting and combining an inner guiding axle mounting bracket and an outer guiding axle mounting bracket; the end of the inner guide shaft mounting bracket is connected to the axle through an end axle box, and the end of the outer guide shaft mounting bracket is fixedly connected to the axle box.

6. A method of operation involving a guidance system on a train bogie as claimed in any one of claims 1 to 5, characterised in that the method of operation comprises the steps of: in the running process of the train, a guide shaft in the guide system rotates and guides, and the relative speed between the lower small-diameter section of the guide shaft and the theoretical contact surface of the side surface of the steel rail is controlled to be the same as the advancing speed of the train.

7. The method as claimed in claim 6, wherein the rotation speed of the steering shaft is controlled by the steering shaft power device via the steering shaft power transmission device.

8. The method of claim 6, wherein the guide shaft and the bearing wheel system slide in the transverse direction under the action of the horizontal sliding support and keep the same lifting and falling in the vertical direction, and the guide shaft and the train bogie keep relatively fixed in the transverse direction and relatively displace in the vertical direction under the action of the vertical sliding support.

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