TW201318909A - Railway wagon bogie and railway wagon - Google Patents

Abstract

A railway wagon bogie and a railway wagon are provided. The bogie includes wheel sets, side frames provided with triangular holes, a swing bolster provided with a preset hole in its body, and cross-braced rods. Cavities are formed in the side frames, symmetric around the center of the side frames, and located below the triangular holes. A connecting seat is provided in each of the cavities, and provided with a vertical mounting hole in a middle portion of the connecting seat. The cross-braced rods are elastically connected to the connecting seats through the mounting holes. In the railway wagon bogie and the railway wagon, the strength of the bogie is increased.

Description

Railway freight car bogie and railway wagon

The invention relates to the structure technology of railway freight cars, in particular to a railway freight car bogie and a railway freight car.

Railway wagons as wheeled vehicles generally include a body, a bogie and a brake. Among them, the bogie serves to support the vehicle body, guide the truck to travel along the track, and bear various loads from the vehicle body and the track. The most common bogies for railway wagons include a bolster, two side frames, two wheel sets, a spring damper and a brake.

In order to improve the load capacity of the truck, it is generally started from two aspects, one is to increase the axle weight, and the other is to reduce the weight. At present, due to the limitation of the track and the bridge, the axle weight has basically increased to the limit, and it is difficult to increase it again; therefore, it is generally adopted to reduce the self-weight to increase the effective load, thereby increasing the load capacity.

However, the bogie has a low rigidity and a low critical speed. There are various improvements to the shortcomings of this type of bogie. An improved bogie is provided with elastic cross support bars between the two side frames, thereby increasing the anti-dislocation capability between the two side frames and increasing the anti-diamond rigidity of the bogie. Currently, in practical applications, the cross support bars can be placed under the bolster to form a lower cross support bogie, or can be arranged to pass through the bolster to form a middle cross support bogie. Because of the good safety of the cross-support bogie and the small impact on the brake device, it has been widely used. Chinese patent ZL 200620112243.5 (publication number: CN2910705Y) discloses a railway freight car bogie, as shown in Figure 1-3, the bogie is a middle cross support bogie, including wheel set 1, side frame 2, bolster 3 and a cross-supporting device or the like, wherein the two cross-supporting rods 4 are crossed in an "X" shape through the predetermined holes of the bolster 3, and the two ends of the cross-supporting rod 4 are elastically connected with the two side frames 2 to form a four-bar linkage The mechanism, the two ends of the side frame 2 are supported on the wheel pair 1 by means of a shaft box rubber pad and a bearing saddle. By providing a pair of intersecting support bars 4 between the two side frames 2, the rigidity of the bogie is improved, thereby improving the dynamic performance of the truck. The two cross support bars 4 of the middle cross support bogie pass through the preset holes of the bolster 3, and the two ends of the cross support bar 4 are elastically connected to the support seats 5 on the side frame 2, respectively.

As shown in FIGS. 1 and 3, in order to enable the cross support bar 4 to be coupled to the side frame 2, a support base 5 is welded outside the side frame 2 and below the triangular hole 6, the support base 5 including the tapered column 51 and the seat. The plate 52 and the ribs 53, the cross support rods 4 pass through the triangular holes 6, and are sleeved on the cones 51, and then It is fixed by a compression nut so as to be elastically connected with the support base 5. In the above support seat, the connection between the cone 51 and the seat plate 52 and the rib 53 and between the support base 5 and the side frame 2 are all achieved by welding. . The structure has the following disadvantages: (1) low structural strength. Due to the welding, the fatigue strength of the weld itself is lower than that of the metal body, and the space for mounting the support base 5 is limited, so that the length of the seat plate 52 and the height of the rib 53 are limited, so that between the support base 5 and the side frame 2 The structural strength is low; (2) the structural prestress is large. Each part is realized by welding, the welds are more and densely intersected, the structural prestress caused by welding is large, and the external force and prestress are superimposed during use, so that the local stress is large; (3) the performance of the bogie is unstable. Due to the welding operation, the quality of the weld is not easy to ensure, and the cone 51 cannot be accurately positioned. Therefore, after the cross support rod 4 is installed, the two side frames 2 cannot be ideally rectangular, that is, the bogie is not correctly positioned, which easily leads to the same bogie. Each wheel wears unevenly; (4) the side frame strength is low. Since the support base 5 is disposed on the outer side of the side frame 2, the cross support rod 4 must pass through the triangular hole 6 on the side frame 2, so that the radius of the lower arc of the triangular hole 6 cannot be designed too small to avoid the cross support rod 4 Interference, resulting in reduced strength of the side frame 2; (5) low stability of the bogie. Since the support base 5 is disposed on the outer side of the side frame 2, the cross support rod 4 is long, and the pressure-stabilizing critical force of the cross support rod 4 is lowered, which indirectly reduces the anti-diamond rigidity of the bogie; (6) the occupied space is large. Since the existence of the support base 5 increases the total width of the bogie, the bogie design is difficult for some trucks with narrow boundaries; (7) the assembly is difficult. When assembling the cross support rod 4, it is necessary to ensure the clearance between the cross support rod 4 and the bottom surface of the cone column 51, and to ensure that the compression nut above the cross support rod 4 generates a certain torque, which is sometimes difficult to ensure at the same time, resulting in It is difficult to assemble; (8) It is inconvenient to repair. Since the cone 51 is welded to the seat plate 52, the seat plate 52 is welded to the side frame 2. When the cone 51 is worn or its thread is damaged, the replacement is inconvenient.

In view of the deficiencies in the prior art, the present invention provides a railway freight car bogie and a railway wagon that can increase the structural strength of the bogie.

In one aspect of the invention, a railway freight car bogie is provided that includes a wheel a side frame having a triangular hole, a bolster having a predetermined hole in the abdomen, and a cross support bar, wherein: the side frame is formed with a cavity symmetrically centered on the side frame, and the cavity is located in the triangle a lower portion of the hole; a connecting seat is disposed in the cavity, and a middle portion of the connecting seat is provided with a vertical mounting hole, and the cross support rod is elastically connected to the connecting seat through the mounting hole.

In another aspect of the invention, there is also provided a railway wagon having a frame and a bogie coupled to the frame, wherein the bogie is a railway freight car bogie provided by the present invention.

In still another aspect of the present invention, a railway vehicle bogie is further provided, including a wheel pair, a side frame having a through hole, a bolster having a predetermined hole, and a cross support bar, wherein: the side A cavity is formed in the frame, and a connecting seat is disposed in the cavity, and the connecting seat is provided with a mounting hole, and the cross support bar is elastically connected to the connecting seat through the mounting hole.

The railway freight car bogie and the railway freight car provided by the invention improve the strength of the bogie and the rigidity of the anti-diamond, and are convenient for assembly and maintenance.

The embodiments of the present invention will be described clearly and completely in the light of the embodiments of the present invention Example.

4 is a front view of a railway freight car bogie according to an embodiment of the present invention, FIG. 5 is a top view of the railway freight car bogie of FIG. 4, and FIG. 6 is a partial enlarged view of a railway freight car bogie according to an embodiment of the present invention; 7 is a schematic view of a cavity in a railway freight car bogie provided by an embodiment of the present invention. The embodiment of the invention provides a railway freight car bogie, comprising a wheel pair 1, a side frame 6 with a triangular hole 6, a bolster 3 with a preset hole in the abdomen, and a cross support rod 4, wherein: the side frame 2 is formed There is a cavity 7 which is symmetrical with the center of the side frame 2, as shown in Fig. 4-7, the cavity 7 is located below the triangular hole 6; the cavity 7 is provided with a connecting seat 8, and the middle portion of the connecting seat 8 is provided with a vertical Straight mounting hole 81 through which the cross support rod 4 is elasticized by the mounting hole 81 connection.

Compared with the prior art, as shown in FIG. 1 and FIG. 3, the prior art has limited space for the mounting seat 5, so that the length of the seat plate 52 and the height of the rib 53 in the prior art cannot be too large, so that the support base 5 is The structural strength between the side frame 2 and the side frame 2 is low. The railway freight car bogie provided by the embodiment of the present invention eliminates the welded structure, and the force-receiving component can be made without considering the influence of the welding material, so that the material with higher strength can be selected and improved. The strength of the bogie. At the same time, the railway freight car bogie provided by the embodiment of the present invention only drills or reams the connecting seat 8 provided in the cavity 7 on the side frame 2, so the installation size and position thereof are relatively easy to ensure, thereby making the position of the cross support device Accurately, the two side frames 2 can be ideally rectangular, that is, the bogies are maintained in a positive position to avoid uneven wear of the same bogie wheels; and the present invention will be connected in comparison with the prior art in which the support bases 5 are disposed outside the side frames 2. The seat 8 is disposed in the cavity 7 formed on the side frame 2, shortening the length of the cross support bar 4, and improving the pressure-stabilizing critical force of the cross support bar 4, thereby improving the anti-diamond rigidity of the bogie.

As shown in FIG. 6 and FIG. 7, a connecting seat 8 is provided in the cavity 7 at the lower portion of the triangular hole 6 of the side frame 2. Preferably, the connecting seat 8 can be integrally molded with the side frame 2 by casting, thereby being able to solve the prior art Each component is a strength defect caused by a welded joint.

The specific shape of the connecting seat 8 is not limited herein. For example, it may be provided in a hollow cylindrical shape, and the circular hole in the middle portion is the mounting hole 81. Specifically, the connecting seat 8 is disposed inside the cavity 7, and the top and the side frame 2 are integrally joined by casting, and the bottom portion may be a suspended cylindrical structure and exposed from the bottom of the cavity 7 for wearing the setting member. In the actual machining process, a hole having a diameter smaller than the mounting hole 81 may be firstly drilled, and then drilled or reamed to achieve the required dimensional accuracy and surface finish.

FIG. 8 is a partially cutaway exploded view of a railway freight car bogie according to an embodiment of the present invention. On the basis of the above embodiment, it is preferable that the bogie is provided with a positioning pin 9, one end of which is provided with a step, which is caught on the bottom surface of the mounting hole 81, and the other end is provided with a thread to cooperate with the tightening nut 10. To press the cross support bar 4 against the side frame 2. The taper column of the prior art is replaced by the positioning pin 9. When the positioning pin 9 is worn or its thread is damaged, it is convenient to disassemble and replace. Further, the two ends of the cross support rod 4 are provided with positioning holes, and the positioning holes are provided with an elastic bushing 11 with an inner hole, and the inner hole of the elastic bushing 11 and the positioning pin 9 cooperate with each other. In practical applications, the upper and lower surfaces of the connecting base 8 are all flat, the cross support rod 4 is placed on the upper surface of the connecting seat 8, and the elastic bushing 11 is disposed in the positioning hole of the end of the cross support rod 4, which will be fixed. The position pin 9 passes through the mounting hole 81 and the elastic bushing hole in the cross support rod 4 from the bottom up, and the tightening nut 10 is mounted at the threaded end of the positioning pin 9, thereby connecting the cross support rod 4 with the elastic bushing 11 Together, the function of the elastic bushing 11 is to provide a certain elasticity between the cross support bar 4 and the side frame 2, thereby mitigating the impact force.

It should be noted that if the triangular opening 6 is large, the positioning pin 9 can be passed from the top to the bottom through the mounting hole 81, and the tightening nut 10 is disposed at the lower end of the positioning pin 9. The above structure is lost in the nut. In the case of the positioning pin 9, it is usually not lost, so that the cross-supporting device does not fail.

The embodiment of the invention further provides a railway wagon having a frame and a bogie connected to the frame, wherein the bogie is a railway freight car bogie provided by any embodiment of the invention.

The railway freight car bogie and the railway freight car provided by the embodiments of the present invention are provided with a connecting seat in the cavity on the side frame, and are elastically connected with the cross support bar, thereby solving various defects caused by welding in the prior art and shortening the crossover. The length of the support rod increases the structural strength and resistance of the bogie.

In another aspect of the present invention, a railway vehicle bogie is provided which includes a wheel set 1, a side frame 2 having a through hole 6, a bolster 3 having a predetermined hole, and a cross support bar 4. As shown in FIGS. 6 and 7, a cavity 7 is formed in the side frame 2, wherein the cavity 7 is defined by the outer circumference of the side frame 2. A connection seat 8 is provided in the cavity 7. In the example shown in FIG. 6, the connector 8 is located below the through hole 6. However, it will be appreciated that the connector 8 can be positioned at any suitable location in the cavity 7 as long as the cross bracing rod 4 can be attached to the side frame 2. A mounting hole is formed in the connecting base 8, and the cross support rod is connected to the connecting base 8 through the mounting hole, thereby being connected to the side frame 2. Alternatively, connectors known in the art may be provided on the connector 8 to connect the cross bracing rod 4 to the side frame 2. Of course, the railway vehicle bogie of this aspect of the invention may also incorporate some of the embodiments or features described above for the railway freight car bogie, and no further details are provided herein.

It should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, and are not intended to limit the present invention. Accordingly, it will be understood by those of ordinary skill in the art that the invention may be modified and modified, and the scope of the present invention is defined by the appended claims.

1‧‧‧round

2‧‧‧Side frame

3‧‧‧Bolster

4‧‧‧cross support rod

5‧‧‧ support

51‧‧‧ cone column

52‧‧‧ seat board

53‧‧‧ ribs

6‧‧‧A triangular hole

7‧‧‧ cavity

8‧‧‧Connecting seat

81‧‧‧Installation holes

9‧‧‧Locating pin

10‧‧‧ tightening nut

11‧‧‧Flexible bushing

1 is a schematic structural view of a railway freight car bogie in the prior art.

2 is a top plan view showing the structure of a railway freight car bogie in the prior art.

3 is a side elevational view of the railway freight car bogie of FIG. 2.

4 is a front elevational view showing the structure of a railway freight car bogie according to an embodiment of the present invention.

Figure 5 is a top plan view of the railway freight car bogie of Figure 4.

6 is a partial cross-sectional enlarged view of a railway freight car bogie according to an embodiment of the present invention.

FIG. 7 is a schematic diagram of a cavity in a railway freight car bogie according to an embodiment of the present invention.

FIG. 8 is a partial cross-sectional exploded view of a railway freight car bogie according to an embodiment of the present invention.

Reference mark:

2‧‧‧Side frame

8‧‧‧Connecting seat

81‧‧‧Installation holes

Claims (13)

A railway freight car bogie, comprising a wheel pair, a side frame with a triangular hole, a bolster with a preset hole in the abdomen, and a cross support bar, wherein the side frame is formed with a space symmetrical with the center of the side frame a cavity, and the cavity is located below the triangular hole; a connecting seat is disposed in the cavity, a middle mounting portion of the connecting seat is provided with a vertical mounting hole, and the cross support bar passes through the mounting hole The connecting seat is elastically connected. The railway freight car bogie according to claim 1, wherein the connecting seat and the side frame are integrally formed by casting. The railway freight car bogie according to claim 1 or 2, wherein the bogie is provided with a positioning pin, one end of the positioning pin is provided with a step, and the step is stuck in the installation. The bottom surface of the hole, the other end of the positioning pin is provided with a thread, and the thread cooperates with the tightening nut to press the cross support bar against the side frame. The railway freight car bogie according to claim 3, wherein the two ends of the cross support bar are provided with a positioning hole, and the positioning hole is provided with an elastic bushing with an inner hole. The inner bore of the elastic bushing cooperates with the positioning pin. A railway wagon having a frame and a bogie connected to the frame, wherein the bogie is a railway freight car bogie according to any one of claims 1-4. A railway vehicle bogie, comprising a wheel pair, a side frame with a through hole, a bolster with a preset hole, and a cross support rod, wherein the side frame is formed with a cavity, and the cavity is A connecting seat is provided, the connecting seat is provided with a mounting hole, and the cross support rod is connected to the connecting seat through the mounting hole. The railway vehicle bogie according to claim 6, wherein the connecting seat and the side frame are integrally formed by casting. The railway vehicle bogie according to claim 6 or 7, wherein the bogie is provided with a positioning pin, one end of the positioning pin is provided with a step, and the step is stuck in the installation. The bottom surface of the hole, the other end of the positioning pin is provided with a thread, and the thread cooperates with the tightening nut to press the cross support bar against the side frame. The railway vehicle bogie according to claim 8, wherein the two ends of the cross support rod are provided with a positioning hole, and the positioning hole is provided with an elastic bushing with an inner hole. The inner bore of the elastic bushing cooperates with the positioning pin. The railway vehicle bogie according to claim 6 is characterized in that: The holes are generally triangular. The railway vehicle bogie according to claim 6, wherein the connecting seat is disposed in the cavity and below the through hole. The railway vehicle bogie according to claim 6, wherein the connecting seat is provided in a hollow cylindrical shape, and the cylindrically-shaped central circular hole is configured as the mounting hole. The railway vehicle bogie according to claim 7, wherein the connecting seat is cast and formed with a bore, and the diameter of the bore is smaller than a diameter of the mounting hole, so that the The cast holes are further processed to form the mounting holes.