WO2015196870A1

WO2015196870A1 - Bogie for railway wagon and side frame thereof

Info

Publication number: WO2015196870A1
Application number: PCT/CN2015/078514
Authority: WO
Inventors: 许善超; 胡海滨; 邵文东
Original assignee: 齐齐哈尔轨道交通装备有限责任公司
Priority date: 2014-06-23
Filing date: 2015-05-08
Publication date: 2015-12-30
Also published as: CN203902570U

Abstract

Disclosed are a bogie for a railway wagon and a side frame thereof. The side frame is provided with a triangle hole (1), and a lower hole wall of the triangle hole (1) is provided with a mounting surface (2); the mounting surface (2) is provided with a protrusion part (3) which extends upwards and downwards, so that a crossing rod (4) of the bogie is sheathed on the protrusion part (3) through a connecting hole (41) thereof; and a connecting part (31) is provided above the protrusion part (3), and the connecting part (31) is used for connecting a connecting piece (5) for limiting the crossing rod (4). The crossing rod (4) can be directly sheathed on the protrusion part (3) through the connecting hole thereof without penetrating the triangle hole (1) to protrude outwards, so that the length and weight of the crossing rod (4) can be effectively reduced, and the normal position control capability of the crossing rod (4) can be improved. The triangle hole (1) on the side frame can be used reasonably without welding a connecting seat at an outer side of the triangle hole (1) separately, thereby simplifying the structure of the entire side frame. The connection between the protrusion part (3) and the hole wall of the triangle hole (1) is relatively reliable, thereby reducing weak connecting links and avoiding the occurrence of stress concentration.

Description

Railway freight car bogie and side frame thereof

This application claims priority to Chinese Patent Application No. 201420336862.7, entitled "A Railway Freight Car Bogie and Its Side Frames", filed on June 23, 2014, the entire contents of which are incorporated by reference. In this application.

Technical field

The invention relates to the technical field of railway transportation, in particular to a side frame of a railway freight car bogie. The invention also relates to a railway freight car bogie using the above side frame.

Background technique

The bogie is an important part of the railway vehicle. It is used to carry the weight of the car body and ensure that the vehicle runs along the line, which directly affects the safety and stability of the vehicle.

In order to improve the performance of the bogie, in the prior art, a middle cross support device is usually installed on the basis of the traditional three-piece bogie, thereby improving the critical speed of the bogie instability of the bogie and the stability of the straight running of the truck, and improving the vehicle. performance.

1-4 is a top view of a side frame of the prior art; FIG. 2 is a front structural view of the side frame of FIG. 1; and FIG. 3 is a side view of the side frame of FIG. FIG. 4 is a partially enlarged schematic view showing the connection of the cross bar and the side frame in the prior art.

In order to realize the connection of the two cross bars in the middle cross support device, the side frame 1' of the prior art bogie is welded with a connecting seat 2' so that the two ends of the cross bar are respectively fixedly connected with the connecting seats 2' on both sides. . The connecting seat 2' includes a seat plate 21' disposed outside the triangular hole of the side frame 1', and the upper and lower sides of the seat plate 21' are provided with ribs 22' to improve the strength of the entire seat plate 21'; the seat plate 21 'There is also a vertically extending cone 23' which extends upwardly a distance so that the cross bar can be fitted over the cone 23' and the top of the cone 23' can be fitted with a nut. External thread.

As shown in FIG. 4, when connecting, the cross bar is set on the tapered column 23' with the connecting hole at the end thereof, and a rubber taper sleeve 3' is provided between the two to improve the connection reliability, and at the same time, the rubber taper sleeve 3' A step supporting the lower end surface of the cross bar is arranged below to position the lower side of the cross bar to prevent the cross bar from moving downward; then the cross bar is pressed down by the gland 4' and screwed to the cone 23 with a nut 5' Above the 'nut' 5' and the gland 4' press down the crossbar to prevent it from swaying up during the movement.

With the above prior art, the following technical problems exist:

1. It is necessary to weld the connecting seat 2' to the outside of the side frame 1'. The connecting seat 2' is a cantilever welded structure, the fatigue strength of the welded joint itself is low, and the seat plate 21' is caused by the limited installation space of the connecting seat 2'. And the structure of the rib 22' is limited, so that the structural strength of the entire connecting seat 2' and the side frame main body portion is low;

2. The connection point of the connecting seat 2' and the cross bar is exposed to the outside of the bogie, which is easy to cause a bump during use, thereby damaging the thread structure on the cone 23', which brings inconvenience to the maintenance and replacement;

3. Since the cross bar is in the middle of the bogie, the connecting seat 2' is disposed on the outer side of the side frame, so the cross bar needs to extend outward through the triangular hole of the side frame to be connected with the connecting seat 2', resulting in a cross bar Longer and heavier; when the crossbar is too long, the stress points at both ends are far apart, and the stress on the shaft is greater under the same load, which affects the strength of the crossbar.

Therefore, how to design a side frame of a railway freight car bogie to facilitate the connection of the cross bar and improve the connection reliability is a technical problem that a person skilled in the art needs to solve at present.

Summary of the invention

The invention provides a side frame of a railway freight car bogie, which has a simple structure and is convenient to be connected with the cross bar, and the connection reliability of the two is relatively high, and the use is more convenient.

The invention also provides a railway freight car bogie having the above side frame, wherein the connection between the cross bar and the side frame is more reliable, and the length of the cross bar is shorter, the weight is lighter, and the right position control capability is better.

A side frame of a railway freight car bogie according to the present invention, the side frame has a triangular hole, the lower hole wall of the triangular hole has a mounting surface, and the mounting surface is provided with a protrusion extending upward and downward for the bogie The cross bar is fitted on the protrusion with its connecting hole, the protrusion The upper portion is provided with a connecting portion for connecting the connecting member for limiting the cross bar.

In the side frame of the present invention, the lower hole wall of the triangular hole is provided with a mounting surface, and the protruding portion is directly disposed on the mounting surface, and the connecting rod can be directly fitted on the protruding portion by the connecting hole without protruding through the triangular hole The utility model can effectively reduce the length and weight of the cross bar, reduce the stress on the cross bar, and improve the positive position control ability of the cross bar to the bogie; in addition, the triangular hole of the side frame can be rationally utilized without the need for the triangular hole The outer side of the outer joint is welded separately, which simplifies the structure of the entire side frame; more importantly, the connection between the protruding portion and the hole wall of the triangular hole is more reliable and the connection is reduced compared with the separate connection of the prior art. The weak ring avoids stress concentration, which in turn improves the mechanical performance of the entire bogie.

Optionally, a step for supporting the cross bar is provided below the protrusion.

It is also possible to provide a step below the protrusion to support the cross bar, and the upper and lower sides of the cross bar are respectively positioned by the connecting member and the step to prevent the cross bar from moving up and down during the movement to ensure the reliability of the connection.

Optionally, the protruding portion is a tapered column, the lower end of which protrudes outward to form the step, and the upper end is provided with a hole to form the connecting portion.

The protruding portion can be arranged in the form of a tapered column, and the tapered surface is connected with the connecting hole of the cross rod, so that the tightness of the protruding portion and the connecting hole can be adjusted by adjusting the inclination angle of the tapered surface, thereby achieving reliable connection; It is also possible to utilize the structural features of the cone column to project its lower end outward to form a step for supporting the cross bar, and the upper end is provided with a hole to form the connecting portion, so that the protruding portion and the cross bar are better matched.

Optionally, the mounting surface is a plane disposed in the middle of the triangular hole, and the protrusion is welded on the mounting surface.

The mounting surface can be a plane disposed in the middle of the triangular hole, and the area in the middle of the triangular hole is more stable, and the strength is higher, which is convenient for reliable positioning of the cross rod.

Optionally, the weld between the protrusion and the mounting surface is continuous.

The present invention also provides a railway freight car bogie comprising a cross bar, the cross bar being connected to the side frames on both sides by two ends thereof, the side frame being the side frame according to any one of the above.

Since the railway freight car bogie of the present invention has the side frame according to any of the above, The technical effects produced by the side frames of any of the above are applicable to the railway freight car bogie of the present invention, and are not described herein again.

Optionally, the connecting portion is a threaded hole, and the connecting member is a gland nut screwed into the threaded hole, and the gland nut is press-fitted with the cross bar by a gland thereof.

The protruding portion can be provided with internal threads for screw connection of the connecting piece. The threaded internal connection can avoid damage to the thread, ensure the reliability of the connection, and facilitate inspection; the part of the gland nut with external thread can be rotated. The inside of the protruding portion reduces the overall height formed by the connection of the protruding portion and the gland nut, and can reduce the space of the occupied triangular hole, so as to provide a more sufficient operation space for the operator to replace the brake shoe through the triangular hole. Furthermore, the gland of the gland nut can press the cross bar downwards to prevent the cross bar from swaying upwards to ensure the reliability of the connection.

Optionally, the gland nut is provided with a retaining washer for preventing looseness thereof to improve connection reliability and avoid loosening of the cross bar due to loosening of the nut.

Optionally, a gap is formed between the outer wall of the protruding portion and the hole wall of the connecting hole to reduce vibration shock.

DRAWINGS

1 is a plan view showing a manner of setting a side frame in the prior art;

Figure 2 is a front view showing the structure of the side frame shown in Figure 1;

Figure 3 is a side view showing the side frame of Figure 2;

4 is a partially enlarged schematic view showing the connection of a cross bar and a side frame in the prior art;

Figure 5 is a perspective view showing a three-dimensional structure of a railway freight car bogie according to a specific embodiment of the present invention;

Figure 6 is a schematic perspective view showing the arrangement of the side frame without the protruding portion provided by the present invention;

Figure 7 is a partially enlarged schematic view showing a triangular hole portion in the side frame shown in Figure 6;

Figure 8 is a partially enlarged schematic view showing the rear triangular hole portion of the side frame provided with the protruding portion shown in Figure 6;

Figure 9 is a schematic cross-sectional view showing the connecting portion of the side frame and the cross bar provided by the present invention.

In Figure 1-4:

1' side frame, 2' connector, 21' seat plate, 22' rib, 23' cone, 3' rubber sleeve, 4' gland, 5' nut

In Figure 5-9:

1 triangular hole, 2 mounting surface, 3 protruding part, 31 connecting part, 32 step, 4 cross rod, 41 connecting hole, 5 connecting piece, 6 side frame, 7 stop backing, 8 rubber sleeve

detailed description

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

Please refer to FIG. 5. FIG. 5 is a schematic perspective structural view of a railway freight car bogie according to an embodiment of the present invention.

In a specific embodiment, the railway freight car bogie (hereinafter referred to as the bogie) of the present invention may be provided with a middle cross support device, wherein the middle cross support device comprises two cross bars 4 arranged in an X shape, and the cross bar 4 The two ends are respectively connected with the side frames 6 on both sides to realize the positioning of the cross bar 4, and the anti-serna deformation ability of the entire bogie is improved by the cross bar 4.

It should be noted that the upper and lower azimuths described in this paper are based on the track surface of the railway wagon, and the direction perpendicular to the track surface is vertical. In the vertical direction, the direction of the bogie near the track is downward, away from the track. For the above.

The side frame 6 of the present invention will be described in detail below with reference to the accompanying drawings. For other parts of the bogie of the present invention, please refer to the prior art, and details are not described herein.

Please refer to FIG. 6-8. FIG. 6 is a schematic perspective view showing the three-dimensional structure of the side frame without the protruding portion provided in the present invention; FIG. 7 is a partially enlarged schematic view showing the triangular hole portion in the side frame shown in FIG. 6; A partial enlarged view of the rear triangular hole portion of the protruding portion is provided.

The side frame 6 of the present invention has a triangular hole 1 having a mounting surface 2 on the lower hole wall. The mounting surface 2 is generally a plane having a certain area, as shown in FIG. 6 and FIG. 7; The protruding portion 3, the protruding portion 3 extends in the up and down direction, so that the cross bar 4 is fitted on the protruding portion 3 with its connecting hole 41 (please refer to FIG. 9) as shown in FIG. 8; the connecting portion 3 is further provided with a connecting portion above it. 31, when the cross bar 4 is fitted with the connecting hole 41 on the protruding portion 3, the connecting member 5 can be connected with the connecting portion 31, so that the connecting member 5 can restrain the cross bar 4 and prevent the cross bar 4 from tilting upward. This causes the connection of the cross bar 4 to the protrusion 3 to fail.

In the side frame 6 of the present invention, when the mounting surface 2 is machined in the lower hole wall of the triangular hole 1, the protruding portion 3 can be directly disposed on the mounting surface 2, and the connecting seat is not required to be provided outside the triangular hole 1, thereby simplifying the side frame The structure of the above-mentioned structure effectively utilizes the space of the triangular hole 1, and the structural strength of the hole wall of the triangular hole 1 is higher than that of the prior art in which the connecting seat is provided on the outer side of the triangular hole 1, and the setting of the protruding portion 3 is high. The influence on the joint is small, and the connection of the cross bar 4 to the protruding portion 3 can improve the connection reliability and avoid stress concentration; since the protruding portion 3 is disposed in the triangular hole 1, the cross bar 4 does not need to protrude from the triangular hole 1 The connection with the side frame 6 can be realized, the length of the cross bar 4 is effectively reduced, the weight of the cross bar 4 is reduced, and the distance between the action points at both ends of the cross bar is shortened, thereby improving the cross bar 4 to the bogie Positive position control ability.

The upward and downward extension of the protruding portion 3 means that the protruding portion 3 extends substantially in the up and down direction, that is, the longitudinal direction of the protruding portion 3 is in the up and down direction, not exactly referring to the vertical protruding portion 3; the axis of the protruding portion 3 may also be relatively vertical The direction is shifted by a certain angle as long as the protruding portion 3 can have a certain length in the up and down direction so that the connecting hole 41 of the cross bar 4 can be fitted thereon.

A step 32 may be provided below the protrusion 3 to support the cross bar 4, and the lower side of the cross bar 4 is supported and positioned to prevent the cross bar 4 from moving downward during the running of the vehicle, and the upper and lower sides of the cross bar 4 The side is respectively restrained by the connecting member 5 and the step 32, and the connection reliability and stability of the cross bar 4 and the protruding portion 3 are ensured to improve the positive position control capability of the cross bar 4 to the bogie.

Specifically, the protruding portion 3 may be disposed as a tapered column, the lower end of the tapered column extends outward to form the step 32, and the upper end is provided with a hole position, the hole position is the connecting portion 31, and the connecting member 5 may Connected to the hole position. The hole position may be a pin hole or a screw hole or the like, and may be correspondingly arranged according to the structural form of the connecting member 5.

Normally, the connecting hole 41 on the cross bar 4 is a circular hole which is kept uniform from the upper to the lower aperture, and when the protruding portion 3 is provided as a tapered column, between the protruding portion 3 and the hole wall of the connecting hole 41 The radial distance is tapered from top to bottom, and when the cross bar 4 is fitted on the protruding portion 3 with its connecting hole 41 from top to bottom, it can be gradually clamped to improve the connection reliability.

In addition, the protruding portion 3 adopts a tapered columnar structure and can also form a step 32 by its own structural characteristics to support the cross bar 4; then, a hole is arranged above the tapered column to form a connecting portion 31, which is connected by a hole. The method is simpler, and the structure of the connecting member 5 can be simplified, thereby effectively reducing the space of the triangular hole 1 occupied by the protruding portion 3 and the connecting member 5, so that the triangular hole 1 has a more usable operating space.

It is conceivable that the step 32 can also be arranged directly on the mounting surface 2, for example, a flange can be arranged on the mounting surface 2 in the circumferential direction of the projection 3 to form the step 32, which can also support the crossbar 4. The role.

It is also conceivable that the protruding portion 3 may be provided in other shapes. For example, the protruding portion 3 may be provided in a cylindrical shape that fits with the connecting hole 41, or other regular or irregular shape such as a trapezoid, and then in the protruding portion 3 and the connecting hole. A device such as a spacer is added between 41 to achieve a close fit of the protruding portion 3 and the connecting hole 41. That is to say, the structure of the protruding portion 3 is various, and any of them can be provided in the triangular hole 1 so that the cross bar 4 can be connected to the protruding portion 3.

Further, the mounting surface 2 may be a flat surface disposed in the middle of the triangular hole 1, and the protruding portion 3 is welded to the mounting surface 2. A plane can be machined or cast in the middle of the lower hole wall of the triangular hole 1 as the mounting surface 2, and then the protruding portion 3 is welded on the mounting surface 2, since the intermediate structure of the triangular hole 1 is relatively stable, the strength is high, and the protrusion will be highlighted. When the portion 3 is disposed in the middle of the triangular hole 1, stress concentration at the joint of the protruding portion 3 and the mounting surface 2 can be avoided, and it can be ensured that the protruding portion 3 provides a continuously effective binding force to the cross bar 4 so that the cross bar 4 is turned The frame is controlled to improve the anti-serna deformation ability of the bogie.

Further, the weld bead between the protruding portion 3 and the mounting surface 2 may be continuous or discontinuous, that is, according to the positioning dimension of the protruding portion 3, continuous welding or welding may be performed on the periphery. It is fixed to the mounting surface 2 as long as the positioning requirement of the protruding portion 3 can be ensured.

Further, the manner in which the protruding portion 3 and the mounting surface 2 are fixedly connected is various, and is not limited to the above-described welding connection method, and the protruding portion 3 and the mounting surface 2 may be integrally molded, or riveted, screwed, or pinned. Other positioning connections. The mounting surface 2 may be a flat surface or other shapes such as a curved surface, and the specific structural form is not limited as long as the mounting position can be provided for the protruding portion 3. Of course, when the mounting surface 2 is flat, it can provide sufficient space for the installation of the protruding portion 3, which is more convenient for the connection of the cross bar 4, as shown in FIGS. 7 and 8.

Please refer to FIG. 9. FIG. 9 is a cross-sectional structural diagram of a connecting portion of a side frame and a cross bar provided by the present invention.

In detail, the connecting portion 31 above the protruding portion 3 may be a threaded hole, and the connecting member 5 may be a gland nut, and the connecting member 5 is screwed into the connecting portion 31 with its threaded portion, and is pressed by the gland and the cross bar 4 Coordination, as shown in Figure 9.

When the connecting member 5 is provided as a gland nut, it comprises a gland and a threaded portion extending downward from the middle of the gland, the external thread of the threaded portion is engaged with the internal thread of the connecting portion 31; when the threaded portion is completely screwed into the threaded hole The gland is covered above the connecting portion 31, and the lower end surface of the gland abuts against the upper rod wall of the cross bar 4, and the gland presses down the upper wall of the cross bar 4 to prevent the cross bar 4 from squatting upward. The movement ensures the connection reliability of the cross bar 4 and the protruding portion 3.

The retaining washer 7 may also be provided on the gland nut to prevent the gland nut from loosening. As shown in FIG. 9, the retaining washer 7 is placed on the gland of the gland nut and the upper wall of the cross bar 4. In order to ensure the validity of the connection of the gland nut.

When the connecting member 5 adopts a gland nut, the threaded portion thereof can be screwed into the connecting portion 31 of the protruding portion 3, and the upper wall of the cross bar 4 is limited by the gland; and the limiting member is separately provided in the prior art. Compared with the limit of the cross bar 4, the overall height of the protruding portion 3 and the connecting member 5 can be effectively reduced, as shown in FIG. 9, to save the height space of the triangular hole 1, thereby providing more sufficient for the operator to replace the brake shoe. The operating space is convenient for vehicle maintenance.

More importantly, the connecting portion 31 and the connecting member 5 are connected by a built-in thread, and the threaded hole of the connecting portion 31 is internally threaded. Compared with the external thread in the prior art, the bump is not caused by the running of the vehicle. Threads can better maintain the integrity of their thread structure, not easy to damage, also It will not affect the replacement of the connecting member 5 due to the damage of the internal thread, and is convenient for maintenance.

On the basis of the above, the present invention may further include a rubber sleeve 8 which is fitted on the outer wall of the protruding portion 3, and then the connecting hole 41 of the cross rod 4 is fitted on the outside of the rubber sleeve 8, and the rubber sleeve 8 is protruded in the protrusion. Between the outer wall of the portion 3 and the wall of the connecting hole 41, as shown in FIG.

On the one hand, the setting of the rubber sleeve 8 can alleviate the vibration of the bogie during the running of the vehicle, thereby alleviating the impact between the cross rod 4 and the protruding portion 3, and improving the stability of the connection; on the other hand, the rubber sleeve 8 can adjust the protruding portion. 3 and the gap between the connecting hole 41, thereby adjusting the tightness of the protrusion 3 and the connecting hole 41, to ensure the reliability of the connection; further, according to the structure of the protruding portion 3 and the connecting hole 41, different structures of rubber can be used. Set 8 to meet different connection needs.

It is conceivable that the rubber sleeve 8 can also be replaced by other gaskets or ferrules. The rubber sleeve 8 should have a certain strength and thickness to withstand the pressing force from the projection 3 and the cross bar 4. The specific structure can be referred to the prior art.

In addition, the bogie of the present invention and other parts of the side frame 6 can be referred to the prior art, and are not limited herein.

The railway freight car bogie and its side frame provided by the present invention are described in detail above. The principles and embodiments of the present invention have been described herein with reference to specific examples. The description of the above embodiments is only for the purpose of understanding the core concepts of the present invention. It should be noted that those skilled in the art can make various modifications and changes to the present invention without departing from the spirit and scope of the invention.

Claims

A side frame of a railway freight car bogie, the side frame having a triangular hole (1), wherein the lower hole wall of the triangular hole (1) has a mounting surface (2), the mounting surface (2) a protruding portion (3) extending upwardly and downwardly is provided, so that the cross bar (4) of the bogie is fitted on the protruding portion (3) with its connecting hole (41), and the protruding portion (3) is provided with a connection above it In the portion (31), the connecting portion (31) is for connecting a connecting member (5) that limits the cross bar (4).
A side frame according to claim 1, characterized in that a step (32) for supporting the cross bar (4) is provided below the projection (3).
The side frame according to claim 2, wherein the protruding portion (3) is a tapered column, the lower end of which protrudes outward to form the step (32), and the upper end is provided with a hole to form the connection. Ministry (31).
The side frame according to any one of claims 1 to 3, wherein the mounting surface (2) is a plane disposed in the middle of the triangular hole (1), and the protruding portion (3) is welded at the same On the mounting surface (2).
A side frame according to claim 4, characterized in that the weld between the projection (3) and the mounting surface (2) is continuous.
A railway freight car bogie comprising a cross bar (4) connected at its two ends to side frames (6) on both sides, wherein the side frame (6) is The side frame of any of claims 1-5.
A railway freight car bogie according to claim 6, wherein said connecting portion (31) is a threaded hole, and said connecting member (5) is a gland nut screwed into said threaded hole, said gland The nut is press-fitted with the cross bar (4) with its gland.
A railway freight car bogie according to claim 7, wherein said gland nut is provided with a retaining washer (7) for preventing looseness thereof.
The railway freight car bogie according to any one of claims 6-8, characterized in that the outer wall of the protruding portion (3) and the hole wall of the connecting hole (41) are padded with a rubber sleeve (8). .