WO2014094409A1

WO2014094409A1 - Railway freight car bogie and railway freight car

Info

Publication number: WO2014094409A1
Application number: PCT/CN2013/076039
Authority: WO
Inventors: 许善超; 邢书明; 刘振明; 李立东; 邵文东; 胡海滨; 侯养海; 凌云飞
Original assignee: 齐齐哈尔轨道交通装备有限责任公司
Priority date: 2012-12-19
Filing date: 2013-05-22
Publication date: 2014-06-26
Also published as: NZ702176A; CN103010245A; AU2013362665B2; CN103010245B; AU2013362665A1

Abstract

A railway freight car bogie, comprising two side frames (101) arranged in parallel and two connecting rods (104); after the connecting rods (104) cross each other, the two ends are respectively connected to the two side frames (101); an installation positioning face is disposed below a triangular hole in the side frame (101); a conical column positioning hole is disposed on the installation positioning face; a retaining shoulder (102) is disposed on the installation positioning face and on the outer side of the conical column positioning hole; a conical column (105) is inserted in the conical column positioning hole; the gap (103) between the conical column (105) and the retaining shoulder (102) is welded by filling. Also disclosed is a railway freight car having the railway freight car bogie.

Description

Railway freight car bogie and railway wagon This application claims priority to Chinese patent application filed on December 19, 2012 by the Chinese Patent Office, application number 201210555966.2, entitled "A railway freight car bogie and railway wagon" The entire contents of which are incorporated herein by reference. Technical equipment

The present invention relates to the field of railway wagon technology, and more particularly to a railway wagon steering frame and a railway wagon. Background technique

Railway wagons for wheel-rail vehicles generally include a body, a bogie, a brake device, and a coupler buffer. Among them, the bogie serves to support the vehicle body, guide the vehicle to travel along the track, and bear various loads from the vehicle body and the line. The most common steering frame on a railway wagon is a cast steel three-piece two-axle bogie consisting of a bolster, two side frames, two wheel sets, a spring damper and a brake.

The three-piece bogie has a small deformation resistance and a low critical speed. In view of the inadequacies of such bogies, there are various improvements, one of which is a cross-supported three-piece bogie, which is provided with an elastic cross-link between the two sides of the frame, thereby adding two The anti-displacement capability between the side frames increases the rigidity of the bogie's diamond deformation.

A railway freight car bogie in the prior art, the bogie is a middle cross support bogie, the bogie includes a wheel set 11, a side frame 13, a bolster, a vibration damping device, a braking device, a spring, and a bearing Saddle, cross support, etc. Wherein, two "X"-shaped connecting rods 12 cross through the reserved holes of the bolster abdomen, and the two ends of the connecting rod 12 are elastically connected with the two side frames 13 to form a four-bar linkage mechanism, and two of the side frames 13 The ends are supported on the wheel set 11 by means of a shaft box rubber pad and a load bearing saddle. The anti-diamond of the bogie is improved by providing a pair of links 12 between the side frames 13 Degree, thereby improving the dynamic performance of the vehicle.

As shown in FIG. 3, in order to connect the crossbar to the side frame, it is necessary to weld a connecting seat 14 on the side frame, the connecting seat is composed of a tapered column 141, a seat plate 142, and two ribs (143, 144) The welding structure is adopted between the respective parts and between the connecting seat 14 and the side frame 13. This structure has the following shortcomings:

(1) The structural strength is low; since the seat plate 142 at the end of the cross-link 12 is a cantilever welded structure, the fatigue strength of the weld itself is lower than that of the metal body, and the space at the mounting seat of the joint is limited, resulting in the length of the seat plate and the height of the rib Neither can be made large, so that the structural strength between the connecting seat and the side frame is low.

(2) The structure prestress is large; the welded structure is adopted between the parts, the welds are more and densely intersected, the structural prestress caused by welding is large, and the external force and the prestress are superimposed during use, so that the local stress is large.

(3) The manufacturing quality is not easy to guarantee; the weld quality is not easy to guarantee due to inconvenient welding operation, and the three-way position of the cone column 141 is not easy to be accurate due to inconvenient assembly, and the two side frames cannot be ideally rectangular after the installation of the cross-link. That is, the bogie is not in the correct position, which may cause uneven wear of the same bogie wheel.

(4) Reducing the strength of the side frame; Since the connecting seat is outside the side frame, the cross link must pass through the triangular hole of the side frame, so that the radius of the lower arc of the outer side of the triangular hole cannot be designed too large to avoid interference with the connecting rod, resulting in lowering The strength of the side frame.

(5) Reduce the anti-diamond stiffness of the bogie; because the connecting seat is outside the side frame, the cross-link is longer, the pressure-stabilizing critical force of the cross-link is reduced, and the inter-grounding reduces the anti-diamond rigidity of the bogie.

(6) The occupied space is large; the total width of the bogie is increased due to the existence of the connecting seat, and the design of the bogie is difficult for some vehicles with narrow boundaries.

(7) Inconvenient maintenance; Since the cone is welded to the seat plate, the seat plate is welded to the side frame, and when the thread is damaged, the replacement is inconvenient.

Therefore, how to avoid the defects of low structural strength and large structural prestress due to welding, It has become a technical problem to be solved by those skilled in the art. Summary of the invention

In view of the above, it is an object of the present invention to provide a railway freight car bogie to avoid the defects of low structural strength and large structural prestress due to welding.

Another object of the present invention is to provide a railway freight car having the above-described railway freight car bogie.

To achieve the above object, the present invention provides the following technical solutions:

A railway freight car bogie comprising two parallel arranged side frames and two connecting rods, two ends of which are respectively connected to the two side frames, and the triangular holes of the side frames are connected A mounting positioning surface is disposed below, and the mounting positioning surface is provided with a tapered column positioning hole;

a shoulder is disposed on the outer side of the positioning hole of the cone, and a taper is disposed in the positioning hole of the cone, and a gap between the cone and the shoulder is filled. Welding

The tapered column protrudes from one end of the positioning hole of the cone column and is provided with an elastic village sleeve; the end mounting hole of the connecting rod is sleeved on the elastic village sleeve;

The overhanging end of the cone is provided with an axial limiting device that limits the escape of the connecting rod.

Preferably, in the railway freight car bogie, the shoulder is at least two places, and a gap is provided between two adjacent shoulders.

Preferably, in the above-described railway freight car bogie, the shoulders are two places and have an arc structure.

Preferably, in the above railway freight car bogie, the shoulder is perpendicular to the mounting positioning surface.

Preferably, in the railway freight car bogie, the tapered column is provided with a shoulder, the shoulder is matched with the end surface of the cone positioning hole, and the gap between the shoulder and the shoulder is filled welding. Preferably, in the above railway freight car bogie, the shoulder is higher or lower than the shoulder of the cone.

Preferably, in the railway freight car bogie, the elastic village sleeve is a tapered village sleeve and cooperates with a tapered shaft section of the cone column.

Preferably, in the railway freight car bogie, the axial limiting device specifically includes: a pressing cap sleeved on the cone column for pressing the connecting rod;

Cooperating with the tapered column thread to press the nut of the pressure cap.

Preferably, in the railway freight car bogie, the cone is provided with a locking pin hole, and the locking pin passes through the locking pin hole for limiting the nut reversal.

A railway wagon comprising a bogie, the bogie being the railway wagon of any of the above.

It can be seen from the above technical solution that the railway freight car bogie provided by the invention has the following technical effects:

(1) Solving the problem of low structural strength of the prior art. Each joint node of the prior art is a welded structure. Due to the welding, the fatigue strength of the weld itself is lower than that of the metal body, and the space of the joint mounting portion is limited, so that the length of the seat plate and the height of the rib can not be made large, so that the connection is made. The structural strength between the seat and the side frame is low. The technical solution of the present invention has only one welded structure, that is, the gap between the tapered column and the shoulder is filled and welded, and the fatigue strength is greatly improved compared with the conventional welded joint welding. The main force-receiving cone column can be made of high-strength material due to the use of filler welding, so the strength of this structure is much higher than the prior art;

(2) Solving the problem of large prestressing of the prior art structure. The connecting joints of the prior art are welded structures, and the welds are numerous and densely intersected, which causes the pre-stress generated by the weld to be large at the weld joint, and the external force and the pre-stress are superimposed during use, so that the local stress is large. The technical solution of the invention has only one welding structure, and is filled and welded, so that there is no problem of large structural prestress; (3) solving the problem that the manufacturing quality of the prior art is not easy to guarantee. Due to the inconvenient welding operation, the quality of the weld is not easy to guarantee; at the same time, because of the inconvenient assembly, the three-way position of the cone column is not easy to be accurate. Indeed, the installation of the cross-connect ^ after the two sides of the frame can not be ideal rectangular, that is, the bogie is not in the right position, easily lead to uneven wear of the same bogie wheel. The technical solution of the present invention has only one welding structure, no other components are assembled on the side frame, and only the side frame is drilled or reamed at a predetermined position, so the size and position thereof are relatively easy to ensure, so that the position of the cross support device is accurate. The two side frames can be ideally rectangular, that is, the bogies are kept in a positive position to avoid uneven wear of the same bogie wheels;

(4) Solving the problem of reducing the strength of the side frame by the prior art. In the prior art, since the connecting seat is outside the side frame, the cross link must pass through the triangular hole of the side frame, so that the radius of the lower arc of the outer side of the triangular hole cannot be designed too large to avoid interference with the connecting rod, thereby reducing the strength of the side frame. In the technical solution of the present invention, the end of the connecting rod does not completely pass through the triangular hole, and the radius of the lower arc of the outer side of the triangular hole can be designed to be large, thereby avoiding stress concentration here, thereby improving the strength of the side frame;

(5) The rigidity of the bogie can be further improved. In the prior art, since the connecting seat is on the outer side of the side frame, the cross-link is long, and the pressure-stabilizing critical force of the cross-link is reduced, and the inter-grounding reduces the rigidity of the turning frame. The technical scheme of the invention can shorten the length of the connecting rod to a certain extent, improve the pressure-stabilizing critical force of the connecting rod, thereby improving the anti-diamond rigidity of the bogie;

(6) Solving the problem that the prior art takes up a large space. In the prior art, since the connecting seat is outside the side frame, the total width of the bogie is increased. For some bogies with narrow boundaries, the bogie design is difficult. The connecting point of the technical solution of the invention is built-in type, and the original inner cavity of the side frame is used, so that no additional space is needed, and the vehicle with narrow limit is adopted;

(7) Solving the problem of inconvenient maintenance of the prior art. The technical scheme of the invention is positioned by the lower cylinder and the shoulder of the cone column, and two independent welds are used for welding the cone and the side frame shoulder. When the cone is worn or its thread is damaged, the cone can be cut by gas cutting. The column is removed, and the side frame is ground and the new cone is re-welded. DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will The drawings used in the embodiments or the description of the prior art are described in a single manner. It is obvious that the drawings in the following description are only some embodiments of the present invention, and those of ordinary skill in the art Other drawings can also be obtained from these drawings on the premise of creative work.

1 is a schematic structural view of a middle cross support bogie in the prior art;

2 is a top plan view of a side frame structure in the prior art;

Figure 3 is a front elevational view of the side frame structure of the prior art;

4 is a schematic structural view of a railway freight car bogie according to an embodiment of the present invention; FIG. 5 is a schematic structural view of a side frame according to an embodiment of the present invention;

6 is a partial structural schematic view of a side frame according to an embodiment of the present invention;

Figure 7 is a partial enlarged view of a side frame according to an embodiment of the present invention;

FIG. 8 is a partial cross-sectional view of a bogie mounting node according to an embodiment of the present invention. detailed description

SUMMARY OF THE INVENTION An object of the present invention is to provide a railway freight car bogie to avoid the defects of low structural strength and large structural prestress due to welding.

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Referring to FIG. 4 and FIG. 8 , FIG. 4 is a schematic structural diagram of a railway freight car bogie according to an embodiment of the present invention; FIG. 5 is a schematic structural diagram of a side frame according to an embodiment of the present invention; Schematic diagram of a partial structure of the rack; Figure 7 is a side view of an embodiment of the present invention FIG. 8 is a partial cross-sectional view of a bogie mounting node according to an embodiment of the present invention.

The railway freight car bogie provided by the embodiment of the present invention comprises two parallel arranged side frames 101 and two connecting rods 104. After the two connecting rods 104 are crossed, the two ends are respectively connected with the two side frames 101, wherein, the side A mounting positioning surface is disposed below the triangular hole of the frame 101, and a taper positioning hole is disposed on the mounting positioning surface, and the cone positioning hole can be specifically processed by a boring machine. The taper locating hole does not need to be too deep, as long as the cone 105 is inserted, it can maintain a good strength by the plug welding process.

On the mounting positioning surface, a shoulder 102 is disposed on the outer side of the locating hole of the cone (specifically, the shoulder 102 and the side frame 101 are integrally formed by casting), and the cone is inserted into the locating hole of the cone The gap 105 between the column 105 and the cone 105 and the shoulder 102 is welded by filling (ie, plug welding).

An elastic village sleeve 106 is sleeved on one end of the cone column 105 extending from the positioning hole of the cone column. The end mounting hole of the connecting rod 104 is sleeved on the elastic village sleeve 106, and the extending end of the cone column 105 is provided with a limiting connecting rod. 104 axial stop device.

The railway freight car bogie provided by the invention has the following technical effects:

(2) Solving the problem of large prestressing of the prior art structure. The connecting joints of the prior art are welded structures, and the welds are numerous and densely intersected, which causes the pre-stress generated by the weld to be large at the weld joint, and the external force and the pre-stress are superimposed during use, so that the local stress is large. The technical solution of the present invention is only There is a welded structure, and for filling welding, there is no problem of large structural prestress;

(3) Solving the problem that the manufacturing quality of the prior art is not easy to guarantee. Due to the inconvenient welding operation, the quality of the weld is not easy to guarantee; at the same time, because of the inconvenient assembly, the three-way position of the cone-column space is not easy to be accurate, resulting in the installation of the cross-connection ^ ^ after the two sides of the frame can not be ideal rectangular, that is, the bogie is not right, easy This results in uneven wear on the same bogie wheel. The technical solution of the present invention has only one welding structure, no other components are assembled on the side frame, and only the side frame is drilled or reamed at a predetermined position, so the size and position thereof are relatively easy to ensure, so that the position of the cross support device is accurate. The two side frames can be ideally rectangular, that is, the bogies are kept in a positive position to avoid uneven wear of the same bogie wheels;

(7) Solving the problem of inconvenient maintenance of the prior art. The technical scheme of the invention is positioned by the lower cylinder and the shoulder of the cone column, and two independent welds are used for welding the cone and the side frame shoulder. When the cone is worn or its thread is damaged, the cone can be cut by gas cutting. The column is removed, the side frame is ground and the new cone is re-welded; In order to further optimize the above technical solution, in one embodiment of the present invention, the shoulder 102 is at least two, and there is a gap between the adjacent shoulders 102, and a gap is provided between the shoulders 102, after the plug welding Can guarantee higher strength.

The shoulders 102 are in two places and have an arc shape. Of course, those skilled in the art can understand that the shoulders 102 can be other numbers, and the shoulders can also be rectangular or other shapes. The present invention is directed to the shoulders 102. The shape and number are not limited.

In one embodiment of the invention, the shoulder 102 is perpendicular to the mounting locating surface. Those skilled in the art will appreciate that the shoulders 102 can also be arranged at different angles.

In an embodiment of the invention, the tapered post 105 is provided with a shoulder that cooperates with the end face of the taper locating hole, and the gap 103 between the shoulder and the shoulder 102 is filled and welded. The shoulder 102 can be higher or lower than the shoulder of the cone 105 and can also be the same height as the shoulder of the cone 105.

In an embodiment of the invention, the elastic village sleeve 106 is a conical sleeve and mates with a tapered shaft section of the cone 105.

In order to further optimize the above technical solution, in an embodiment of the invention, the axial limiting device specifically comprises a pressure cap 108 and a nut 107.

The pressure cap 108 for pressing the connecting rod 104 is sleeved on the cone 105, and the nut 107 for pressing the pressure cap 108 is screwed with the cone 105. After the nut 107 is tightened, the nut 107 is pressed tightly. The pressure cap 108 is pressed, and the pressure cap 108 is pressed tightly to the 4 dry 104.

In order to achieve the purpose of preventing loosening, the embodiment of the present invention has a locking pin hole formed on the cone 105, and the locking pin passes through the locking pin hole for restricting the reversal of the nut 107, thereby achieving the purpose of relaxation.

The present invention also provides a railway wagon including a bogie, wherein the bogie is a railway wagon bogie disclosed in the above embodiment. Since it has the above-mentioned railway freight car bogie, it has all the technical effects of the above-mentioned railway freight car bogie, and will not be described herein.

The various embodiments in the present specification are described in a progressive manner, and each embodiment focuses on differences from other embodiments, and the same similar parts between the various embodiments may be referred to each other. The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be apparent to those skilled in the art. Therefore, the present invention is not limited to the embodiments shown herein, and the scope of the invention is defined by the claims.

Claims

Rights request

1. A railway freight car bogie, including two side frames arranged in parallel and two connecting rods. After the two connecting rods cross, the two ends are respectively connected to the two side frames, characterized in that: An installation positioning surface is provided below the triangular hole of the side frame, and a cone column positioning hole is provided on the installation positioning surface;

A shoulder is provided on the installation positioning surface and outside the conical column positioning hole. A conical column is inserted into the conical column positioning hole. The gap between the conical column and the shoulder is filled by welding;

An elastic sleeve is set on one end of the conical column extending beyond the positioning hole of the conical column; the end mounting hole of the connecting rod is sleeved on the elastic sleeve;

The extended end of the conical column is provided with an axial limiting device that restricts the protrusion of the connecting rod.

2. The railway freight truck bogie according to claim 1, characterized in that there are at least two shoulders, and there is a gap between two adjacent shoulders.

3. The railway freight truck bogie according to claim 2, characterized in that the shoulders are in two places and have an arc-shaped structure.

4. The railway freight car bogie according to claim 1, characterized in that the shoulder is perpendicular to the installation positioning surface.

5. The railway freight truck bogie according to any one of claims 1 to 4, characterized in that, the conical column is provided with a shoulder, and the shoulder matches the end face of the conical column positioning hole, and the The gap between the shaft shoulder and the shoulder is filled and welded.

6. The railway freight car bogie according to claim 5, characterized in that the shoulder is higher or lower than the shoulder of the tapered column.

7. The railway freight car bogie according to claim 1, characterized in that the elastic bushing is a tapered bushing and cooperates with the tapered shaft section of the tapered column.

8. The railway freight car bogie according to claim 5, characterized in that the axial limiting device specifically includes:

A pressure cap that is sleeved on the conical column and used to press the connecting rod;

The nut is matched with the conical column thread and used to hold down the pressure cap.

9. The railway freight truck bogie according to claim 8, characterized in that a locking pin hole is provided on the cone column, and a locking pin passes through the locking pin hole to limit the reversal of the nut.

10. A railway freight car, including a bogie, characterized in that the bogie is the railway freight car bogie according to any one of claims 1-9.