阅读说明：本技术 转向架的中心销、转向架及轨道车辆 (Center pin of bogie, bogie and rail vehicle ) 是由 郭继祥 李会 刘洋 姚建军 吴瑞梅 于 2021-03-03 设计创作，主要内容包括：本申请实施例提供一种转向架的中心销、转向架及轨道车辆,涉及轨道车辆技术,用于克服相关技术中圆柱长销无法满足车辆更换轮对及车辆运输时对车辆的整体起吊需求,导致车辆更换轮对及车辆运输时对车辆的起吊操作较复杂。其中,转向架的中心销包括：两个销体,两个所述销体相对设置；所述销体的两端分别设置有凸台,所述凸台沿所述销体的径向且沿远离另一销体的方向延伸；中间件,所述中间件插设于两个所述销体之间；连接件,所述连接件将所述中间件及两个销体连接。(The embodiment of the application provides a king pin, bogie and rail vehicle of bogie, relates to rail vehicle technique for overcome among the related art the long round pin of cylinder can't satisfy the vehicle and change the whole demand of lifting by crane to the vehicle when wheel set and vehicle transportation, lead to the vehicle to change the wheel set and the vehicle transportation when lifting by crane the operation is more complicated to the vehicle. Wherein, the king pin of bogie includes: the two pin bodies are oppositely arranged; bosses are respectively arranged at two ends of the pin body and extend along the radial direction of the pin body and the direction far away from the other pin body; the middle piece is inserted between the two pin bodies; and the connecting piece is used for connecting the intermediate piece and the two pin bodies.)

1. A kingpin for a bogie, comprising:

the two pin bodies are oppositely arranged; bosses are respectively arranged at two ends of the pin body and extend along the radial direction of the pin body and the direction far away from the other pin body;

the middle piece is inserted between the two pin bodies;

and the connecting piece is used for connecting the intermediate piece and the two pin bodies.

2. The kingpin of a bogie according to claim 1, wherein the intermediate member and the upper ends of the two pin bodies are provided with connecting seats; the connecting piece is matched with the middle piece and the connecting seats at the upper ends of the two pin bodies.

3. The kingpin of a bogie according to claim 2, wherein the connecting seat comprises: the connecting platform is arranged along the radial direction of the center pin of the bogie and extends upwards, and the connecting platform is provided with a connecting hole matched with the connecting piece.

4. The kingpin of a bogie as recited in claim 2, wherein the connector comprises a cotter pin.

5. The kingpin of a bogie as recited in claim 1, wherein the pin body has a semi-circular cross-section.

6. The kingpin of a bogie as recited in claim 1, wherein the boss comprises a first boss provided at a lower end of the pin body; the width of the first boss is gradually reduced from the middle part of the first boss to two sides; wherein the width is a dimension in a radial direction of a kingpin of the bogie.

7. The kingpin of a bogie as recited in claim 1, wherein the bosses comprise second bosses provided at an upper end of the pin body, the second bosses being provided at equal widths; the width of the second boss is a dimension in a radial direction of a center pin of the bogie.

8. The kingpin of a bogie according to claim 7, wherein the intermediate member is provided at an upper end thereof with a boss portion smoothly connected with the second boss.

9. A bogie, comprising: frame and kingpin for a bogie according to any one of claims 1 to 8.

10. A rail vehicle, comprising: a vehicle body and a bogie as claimed in claim 9;

the frame of the bogie and the frame of the bogie are respectively provided with a central hole;

a center pin of the bogie is arranged in the center hole in a penetrating manner;

bosses at two ends of a center pin of the bogie protrude out of the center hole to respectively abut against the vehicle body and the framework.

Technical Field

The application relates to the railway vehicle technology, in particular to a center pin of a bogie, the bogie and a railway vehicle.

Background

The rail vehicle is an important traffic tie connecting cities, is gradually a main vehicle in the cities, and is also a main carrier for realizing goods transportation. The rail vehicle mainly includes: the bogie is used for bearing the vehicle body and realizing walking and steering functions.

The bogie comprises a framework, wheel pairs, a center pin, a transverse shock absorber, a vertical shock absorber, a longitudinal stop and the like. Wherein the kingpin is used to connect the frame with the vehicle body. In the related art, as shown in fig. 1, a center pin 01 is a cylindrical long pin, and the center pin 01 connects a bogie to a vehicle body by being inserted into center holes of the vehicle body and a frame. However, with the center pin in the related art, when the vehicle body is separated from the bogie, the center pin still falls into the center hole of the bogie, and the center pin does not have a lifting function, and cannot meet the overall lifting requirements for the vehicle when the vehicle is replaced and the vehicle is transported, which results in complex lifting operation for the vehicle when the vehicle is replaced and the vehicle is transported.

Disclosure of Invention

The embodiment of the application provides a center pin of bogie, bogie and rail vehicle for overcome among the related art the long round pin of cylinder can't satisfy the vehicle and change the whole demand of lifting by crane to the vehicle when wheel set and vehicle transportation, lead to the vehicle to change the wheel set and the vehicle transportation when lifting by crane the operation more complicated to the vehicle.

A first aspect of an embodiment of the present application provides a kingpin of a bogie, including:

the two pin bodies are oppositely arranged; bosses are respectively arranged at two ends of the pin body and extend along the radial direction of the pin body and the direction far away from the other pin body;

the middle piece is inserted between the two pin bodies;

and the connecting piece is used for connecting the intermediate piece and the two pin bodies.

In one possible implementation manner, the upper ends of the middle piece and the two pin bodies are provided with connecting seats; the connecting piece is matched with the middle piece and the connecting seats at the upper ends of the two pin bodies.

In one possible implementation manner, the connection seat includes: the connecting platform is arranged along the radial direction of the center pin of the bogie and extends upwards, and the connecting platform is provided with a connecting hole matched with the connecting piece.

In one possible implementation, the connector includes a cotter pin.

In one possible implementation, the pin body has a semi-circular cross-section.

In one possible implementation manner, the boss comprises a first boss arranged at the lower end of the pin body; the width of the first boss is gradually reduced from the middle part of the first boss to two sides; wherein the width is a dimension in a radial direction of a kingpin of the bogie.

In one possible implementation manner, the boss comprises a second boss arranged at the upper end of the pin body, and the second boss is arranged at the same width; the width of the second boss is a dimension in a radial direction of a center pin of the bogie.

In one possible implementation manner, a protruding portion is provided at an upper end of the middle piece, and the protruding portion is smoothly connected with the second boss.

A second aspect of embodiments of the present application provides a bogie including: a frame and a kingpin for a bogie as claimed in any one of the preceding claims.

A third aspect of the embodiments of the present application provides a rail vehicle, including: a vehicle body and a bogie as claimed in any one of the preceding claims;

the frame of the bogie and the frame of the bogie are respectively provided with a central hole;

a center pin of the bogie is arranged in the center hole in a penetrating manner;

bosses at two ends of a center pin of the bogie protrude out of the center hole to respectively abut against the vehicle body and the framework.

The embodiment of the application provides a king pin of bogie, bogie and rail vehicle, through setting up two round pin bodies, middleware and connecting piece, through set up the boss respectively at the upper and lower both ends of round pin body, after the king pin with the bogie and framework and automobile body equipment, the boss at upper and lower both ends offsets respectively with automobile body and framework in order to possess and carry the function of hanging, so, under the condition that need not to carry out the change to the structure of automobile body and framework, the problem that current cylinder long pin can't satisfy the automobile body and lift by crane the demand has been solved, the portability to the operation of lifting by crane of vehicle when doing benefit to improving vehicle replacement wheel pair and vehicle transportation, and the king pin simple structure of this bogie, the dismouting of being convenient for.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic view of a prior art connection of a vehicle body to a truck;

FIG. 2 is a perspective view of a vehicle body and a truck according to an exemplary embodiment;

FIG. 3 is a schematic cross-sectional view of a vehicle body and truck according to an exemplary embodiment;

FIG. 4 is a schematic diagram of a core pin configuration provided in an exemplary embodiment;

FIG. 5 is a schematic illustration of a center hole provided in an exemplary embodiment;

FIG. 6 is a schematic illustration of a center hole and center pin combination provided in an exemplary embodiment;

FIG. 7 is a schematic illustration of a pin body of a king pin in accordance with an exemplary embodiment;

fig. 8 is a schematic structural view of an intermediate member of the center pin according to an exemplary embodiment.

Description of reference numerals:

1-a center pin; 11-a pin body; 111-a first boss; 112-a second boss; 12-an intermediate piece; 121-a boss; 13-a connecting seat; 131-a connection hole; 14-a connector;

2-a vehicle body;

3-a bogie;

4-center hole.

Detailed Description

In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

With the continuous improvement of railway transportation speed, the requirements of people on the safety and reliability of rail vehicles are higher and higher, a bogie is an important component of a locomotive vehicle, and the load and power transmission of the conventional common-speed passenger car body and the bogie is realized through a car body center plate and a bogie center plate.

When the vehicle body and the bogie are assembled and fall, the upper center plate of the vehicle body is seated on the lower center plate of the bogie. In order to prevent the connection failure of the car body center plate and the bogie center plate, a center pin is inserted in a center hole of the car body upper center plate and a center hole of the bogie lower center plate. The kingpin is an important component for securing vehicles and passengers. In the related art, as shown in fig. 1, a center pin 01 for a general passenger is a straight cylindrical long pin, and although the straight cylindrical round pin has a simple structure and is convenient to insert, when a vehicle body is separated from a bogie, the center pin 01 still falls into a center hole of a bogie center plate, and does not have a lifting function, and cannot meet the requirement of keeping the integrity of the vehicle body and the bogie when the vehicle overturns. Therefore, the overall hoisting function and the guaranteed safety of the vehicle when the wheel set of the vehicle is replaced cannot be met.

In some techniques, a kingpin device with a lifting function for a railway freight car includes a kingpin, first and second lifting assemblies respectively disposed at top and bottom ends of the kingpin, and a first lifting fixing assembly disposed at a top end of the kingpin to be engaged with the first lifting assembly. However, the center pin device has many parts, and the parts cannot be disassembled and assembled on the vehicle, that is, the operation needs to be simultaneously performed on the vehicle and under the vehicle during the disassembly and assembly, so that the operation convenience is poor.

In order to overcome the problems, the embodiment of the application provides a center pin of a bogie, the bogie and a rail vehicle, the bogie is provided with two pin bodies, an intermediate piece and a connecting piece, bosses are respectively arranged at the upper end and the lower end of each pin body, after the center pin of the bogie is assembled with a framework and a vehicle body, the bosses at the upper end and the lower end respectively abut against the vehicle body and the framework to have a lifting function, and therefore, under the condition that the structures of the vehicle body and the framework are not required to be changed, the problem that the existing cylindrical long pin cannot meet the lifting requirement of the vehicle body is solved, the improvement of the portability of the lifting operation of the vehicle when the vehicle is changed and the vehicle is transported is facilitated, the center pin of the bogie is simple in structure, and the disassembly and assembly are convenient.

The structure, function and implementation of the center pin of the bogie, the bogie and the rail vehicle provided by the embodiment will be illustrated in the following with reference to the attached drawings.

As shown in fig. 2, 3 and 4, the rail vehicle provided in this embodiment includes: a vehicle body 2 and a bogie 3. The bogie 3 comprises a frame and a kingpin 1. As shown in fig. 5 and 6, the frame and the vehicle body 2 are provided with a center hole 4, and the center pin 1 is inserted into the center hole 4. As shown in fig. 4, 6, 7 and 8, the center pin 1 includes: the two pin bodies 11 are oppositely arranged; bosses are respectively arranged at two ends of the pin body 11 and extend along the radial direction of the pin body 11 and the direction far away from the other pin body 11; an intermediate member 12, the intermediate member 12 being interposed between the two pin bodies 11; and a connecting piece 14, wherein the connecting piece 14 connects the middle piece 12 and the two pin bodies 11.

Here, for convenience of description, the upper end in this example refers to the top end of the rail vehicle, i.e., the end away from the ground.

The pin body 11 may extend in the axial direction of the center pin 1 so as to be able to be inserted into the center hole 4 of the frame and the vehicle body 2. The two pin bodies 11 may have the same structure, or the two pin bodies 11 may have a symmetrical structure with respect to the central axis of the center pin 1.

The pin body 11 is a columnar structure. The pin body 11 has a semicircular cross-section. In specific implementation, the outer contour of the cross section of the pin body 11 can be a closed curve formed by a circular arc section and a straight line section; wherein the arc length of the arc segment may be less than or equal to half of the circumference of the corresponding full circle, so as to facilitate the assembly of the intermediate member 12. When the arc length of the arc segment is less than half of the perimeter of the corresponding full circle, the corresponding diameter of the arc segment can be matched with the diameter of the central hole 4. When the arc length of the arc segment is equal to half of the circumference of the corresponding full circle, the diameter corresponding to the arc segment may be smaller than the diameter of the central hole 4.

The upper end and the lower extreme of round pin body 11 distribute and are provided with the boss, and the boss extends along the radial direction of core pin 1 to make after assembling core pin 1 with framework and automobile body 2, the boss can offset with framework or automobile body 2, satisfy and carry and hang the demand. Optionally, on the basis of satisfying the lifting function, the size of the upper end boss, that is, the size of the second boss 112, may be larger than the size of the lower end boss, that is, the size of the first boss 111, or the area of the orthographic projection of the second boss 112 on the preset horizontal plane is larger than the area of the orthographic projection of the first boss 111 on the horizontal plane; exemplarily, the orthographic projection of the first boss 111 at the horizontal plane is located within the orthographic projection of the second boss 112 at the preset horizontal plane. Thus, the upper end and the lower end of the pin body 11 can be distinguished quickly and accurately, and the pin body 11 can be quickly inserted into the central hole 4 from top to bottom.

The pin body 11 of the intermediate member 12 may extend in the axial direction of the center pin 1 so as to be inserted into the center hole 4 of the frame and the vehicle body 2. The intermediate member 12 may have a flat plate structure, so that the intermediate member 12 is smoothly inserted between the two pin bodies 11. The intermediate member 12 is inserted between the two pin bodies 11 after assembling the center pin 1 with the frame and the vehicle body 2, so that the outer diameter of the center pin 1 can be adapted to the inner diameter of the center hole 4.

In the process of assembling the center pin 1 with the vehicle body 2 and the framework, firstly, the two pin bodies 11 are arranged in the central holes 4 of the framework and the vehicle body 2 in a penetrating way, and in the concrete implementation, the two pin bodies 11 can be sequentially and respectively inserted into the central holes 4, or the two pin bodies 11 are simultaneously inserted into the central holes 4; at this time, the outer diameter of the assembly body composed of the two pin bodies 11 is smaller than the inner diameter of the central hole 4, and the bosses at the two ends of the pin bodies 11 axially protrude out of the central hole 4.

Then, the intermediate member 12 is inserted between the two pin bodies 11, and at this time, the outer diameter of the assembly body composed of the intermediate member 12 and the two pin bodies 11 can be adapted to the inner diameter of the central hole 4. When the intermediate piece 12 is inserted between the two pin bodies 11, the boss at the end part of the pin body 11 can protrude out of the central hole 4 along the radial direction, the boss at the upper end can abut against the vehicle body 2, and the boss at the lower end can abut against the framework, so that the lifting requirement is met.

Finally, the intermediate piece 12 is connected to the pin body 11 by means of a connecting piece 14 in order to ensure the functional reliability of the king pin 1. In particular implementations, the connector 14 may be a snap, U-lock, bolt, cotter pin, or the like.

In this example, the pin body 11 and the intermediate member 12 are both formed by integral forging, and are machined to improve the precision, safety and reliability of the parts.

The rail vehicle of this embodiment, through setting up two round pin bodies 11 and middleware 12, the assembly of the king-pin 1 of being convenient for and automobile body 2 and framework, both ends set up the boss respectively about round pin body 11, the boss at both ends offsets in order to possess with automobile body 2 and framework respectively about, so, under the condition that need not to carry out the change to the structure of automobile body 2 and framework, the problem that current cylinder king-pin can't satisfy automobile body 2 and lift by crane the demand has been solved, through setting up connecting piece 14, can ensure the functional reliability of king-pin 1, and be convenient for operate. The center pin 1 of this example can satisfy the demand of lifting by crane of vehicle, and simple structure, the dismouting of being convenient for.

In one possible implementation manner, the middle piece 12 and the upper ends of the two pin bodies 11 are provided with connecting seats 13, and the connecting pieces 14 are matched with the middle piece 12 and the connecting seats 13 at the upper ends of the two pin bodies 11, so that the connecting pieces 14 can sequentially penetrate through the pin bodies 11, the middle piece 12 and the connecting seats 13 at the upper ends of the pin bodies 11, and the two pin bodies 11 are reliably connected with the middle piece 12.

Illustratively, the connecting base 13 is a block-shaped connecting table provided at the upper ends of the pin body 11 and the intermediate member 12, and the connecting table extends in the radial direction of the center pin 1 of the bogie 3 and upward. The shape of the connecting platform can be set according to actual needs, and optionally, the upper surface of the connecting platform can be a curved surface. For example, the connecting platform may be a connecting column, the axial direction of the connecting column is perpendicular to the axial direction of the center pin 1, and the cross section of the connecting column may be semicircular or semi-elliptical. The size of the connecting table can be set according to actual needs, so that the space requirement and the impact resistance requirement can be met.

The connection table is provided with a connection hole 131 to be engaged with the connection member 14. The number of the connection holes 131 may be set according to actual needs. For example, when the connecting member 14 is a bolt, the number of the connecting holes 131 on each connecting platform may be equal to the number of bolts. When the connecting member 14 is a U-lock, the number of the connecting holes 131 of each connecting table is twice as many as the number of the U-locks. When the connection members 14 are cotter pins, the number of the connection holes 131 in each connection stage may be equal to the number of cotter pins.

In one possible implementation, the boss includes a first boss 111 disposed at the lower end of the pin body 11; from the middle of the first boss 111 to both sides, the width of the first boss 111 is gradually reduced; wherein the width is the dimension in the radial direction of the kingpin 1 of the bogie 3. Or, from the middle of the first boss 111 to both sides, the distance between the inner side surface and the outer side surface of the first boss 111 toward the pin body 11 is gradually reduced. The first boss 111 is generally crescent-shaped. Thus, the lower end of the pin body 11 can pass through the center hole 4 of the frame and the vehicle body 2 smoothly, and the center pin 1 can be easily assembled with the frame and the vehicle body 2.

The thickness or height of the first boss 111 along the axial direction of the center pin 1 can be set according to actual requirements, so as to meet the requirements of load and impact resistance.

In one possible implementation manner, the bosses include second bosses 112 disposed at the upper end of the pin body 11, and the second bosses 112 are disposed at equal widths; the width of the second boss 112 is a dimension in the radial direction of the kingpin 1 of the bogie 3. That is, the distance between the inner and outer side faces from the second boss 112 toward the pin body 11 is equal everywhere. The second boss 112 is substantially semicircular.

Accordingly, the upper end of the middle piece 12 is provided with a protrusion 121, and the protrusion 121 is smoothly connected with the second boss 112. Illustratively, the second boss 112 and the protrusion 121 together form a circular ring structure, which is beneficial to improve the integrity of the center pin 1.

In this example, the first boss 111 and the second boss 112 are arranged in different structures, so that the upper end and the lower end of the pin body 11 can be distinguished quickly and accurately on the basis of meeting the lifting function, and the pin body 11 can be quickly inserted into the central hole 4 from top to bottom.

Taking the railway vehicle adopting the embodiment as an example of a common passenger car, the bogie 3 framework of the common passenger car is provided with a sleeper beam or a bolster. When assembling the center pin 1, the frame and the car body 2, firstly, two pin bodies 11 are inserted into a center hole 4 of the car body 2 and a bolster or bolster center hole 4 of the bogie 3 in sequence, then an intermediate piece 12 is inserted between the two pin bodies 11, and finally the intermediate piece 12 is connected with the pin bodies 11 through split pins.

When the two pin bodies 11 are combined together, the size of a lifting gear seat formed by bosses at the lower ends of the two pin bodies is slightly smaller than the size of a central hole 4 of the vehicle body 2 and the size of a central hole 4 of the bogie 3, after the intermediate piece 12 is inserted between the two pin bodies 11, the outer diameter size of the central pin 1 meets the matching requirement of the central hole 4 (the central hole 4 of the vehicle body 2 and the central hole 4 of the bogie 3), and the lifting gear of the central pin 1 protrudes out of the central hole 4 at the moment, so that the lifting and safety gear functions are realized.

When the vehicle body 2 is lifted, the vehicle body 2 is connected with the bogie 3 into a whole through the boss of the center pin 1, so that the integral lifting function of the vehicle is realized, the center pin 1 is only installed and disassembled at the end of the vehicle body 2, the operation under the vehicle is not needed, the structure is simple and reliable, and the operation is convenient.

In the rail vehicle that this embodiment provided, through adopting above-mentioned core pin 1, under the condition that does not change automobile body 2 and 3 sleeper beams of bogie or the truck bloster structure, the problem that the vehicle that adopts the long round pin of cylinder among the prior art can't lift by crane has been solved, and simple structure, only can realize the installation and the dismantlement of core pin 1 on automobile body 2, need not to carry out installation and operation under the driving.

The present embodiment further provides a bogie 3, and the structure and implementation process of the bogie 3 may be the same as the bogie 3 in the previous embodiment, and the description of this embodiment is omitted here.

The present embodiment further provides a center pin 1, and the structure and implementation process of the center pin 1 may be the same as the bogie 3 in the previous embodiment, and the description of this embodiment is omitted here.

In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.