Central traction device, bogie and railway vehicle

Abstract

The invention relates to the technical field of railway vehicles, and provides a central traction device, a bogie and a railway vehicle, and the central traction device comprises a traction beam, a pin sleeve, a central pin and a connecting rod. Wherein the traction beam is provided with a mounting channel along the height direction, and the outer surface of the traction beam is provided with a connecting part. The pin sleeve is installed in the installation channel, a pin hole and two free gaps are formed in the pin sleeve in the height direction, and the two free gaps are located on the two sides of the pin sleeve respectively in the width direction of the railway vehicle. The center pin is installed in the pin hole. One end of the connecting rod is connected with the connecting part, and the other end is suitable for being connected to the framework. Redundancy of structural parts of the central traction device can be avoided, and light weight is achieved under the condition that transverse, vertical and longitudinal functions are kept unchanged.

Description

Technical Field

[0001] The present invention relates to the technical field of rail vehicles, and in particular to a central traction device, a bogie and a rail vehicle. Background Art

[0002] In rail vehicles, traditional central traction devices mostly adopt single-pull rod central traction devices or double-pull rod central traction devices, and their structures are usually designed with lateral stop seats to install lateral stops. This will cause the central traction device to have more structural parts and heavier weight, which is not conducive to the lightweight design of the central traction device, bogie and rail vehicles. Summary of the invention

[0003] The present invention provides a central traction device, which is used to solve the technical problem that the central traction device in the prior art needs to design a separate lateral stopper, resulting in more structural parts and heavier weight, and realizes a lightweight design of the central traction device.

[0004] The invention also provides a bogie.

[0005] The invention also provides a rail vehicle.

[0006] The present invention provides a central traction device, comprising:

[0007] A traction beam, wherein a mounting channel is configured along a height direction, and a connection portion is configured on an outer surface of the traction beam;

[0008] A pin sleeve is installed in the installation channel, wherein a pin hole and two free gaps are constructed in the pin sleeve along the height direction, and along the width direction of the rail vehicle, the two free gaps are respectively located on both sides of the pin hole;

[0009] A center pin, mounted in the pin hole;

[0010] A connecting rod has one end connected to the connecting portion and the other end suitable for connecting to the frame.

[0011] According to a central traction device provided by the present invention, the number of the connecting parts is four, the four connecting parts are distributed at intervals along the circumference of the outer surface of the traction beam, and an angle is formed between every two adjacent connecting parts.

[0012] According to a central traction device provided by the present invention, the cross-section of the free gap is arc-shaped, and the two free gaps are located on the same circumference, wherein each of the free gaps corresponds to two gap ends, and the positions of the four connecting parts correspond to the four gap ends.

[0013] According to a central traction device provided by the present invention, the installation channel is configured to be tapered from top to bottom, the center pin is adapted to the installation channel, and the center pin is suitable for being inserted into the installation channel from above the traction beam.

[0014] According to a central traction device provided by the present invention, a pressure cover is provided below the traction beam, and the pressure cover, the pin sleeve and the center pin are suitable for being fixed to each other by fasteners.

[0015] According to a central traction device provided by the present invention, one end of the connecting rod is suitable for being installed on the connecting part through a rubber node, and the other end of the connecting rod is suitable for being connected to a frame mounting seat through a rubber node, and the frame mounting seat is suitable for being connected to the frame.

[0016] According to a central traction device provided by the present invention, the connecting rod extends in a direction away from the traction beam and is configured with a downwardly inclined bending section.

[0017] According to a central traction device provided by the present invention, the two ends of the connecting rod are respectively constructed with a first connecting ring and a second connecting ring, the first connecting ring is horizontally arranged, and the first connecting ring is suitable for the rubber node and the fastener to be connected to the connecting part, and the second connecting ring is vertically arranged, and the second connecting ring is suitable for the rubber node and the fastener to be connected to the frame mounting seat.

[0018] The present invention also provides a bogie, comprising a frame and the central traction device as described above, wherein the central traction device is installed on the frame.

[0019] The present invention also provides a rail vehicle, comprising a vehicle body, wherein the vehicle body is provided with the bogie as described above.

[0020] The central traction device provided by the embodiment of the present invention connects the pin sleeve through the installation channel of the traction beam, and installs the center pin in the pin hole of the pin sleeve to realize the mutual assembly between the traction beam, the pin sleeve and the center pin. The connection part of the outer surface of the traction beam is connected to the frame through a connecting rod, so that the longitudinal load is transmitted to the frame by the connecting rod. At the same time, the traction beam can also swing with the frame through the connecting rod to release the vertical load. The free gap inside the pin sleeve can make the pin sleeve softer laterally and harder longitudinally. While ensuring the transmission of the longitudinal load, the constraint on the lateral movement within a certain displacement is reduced to avoid adding a large lateral stiffness. At the same time, when the lateral displacement exceeds the limit, the two inner side walls of the free gap contact each other to realize the lateral stop function, thereby avoiding the redundancy of the structural parts of the central traction device and achieving lightweight while keeping the lateral, vertical and longitudinal functions unchanged.

[0021] The bogie provided by the embodiment of the present invention installs the aforementioned central traction device on the frame, utilizes the installation channel of the traction beam to connect the pin sleeve, and installs the center pin in the pin hole of the pin sleeve to realize the mutual assembly between the traction beam, the pin sleeve and the center pin. The connecting part on the outer surface of the traction beam is connected to the frame through a connecting rod, so that the longitudinal load is transmitted to the frame by the connecting rod. At the same time, the traction beam can also swing with the frame through the connecting rod to release the vertical load. The free gap inside the pin sleeve can make the pin sleeve softer laterally and harder longitudinally. While ensuring the transmission of the longitudinal load, the constraint on the lateral movement within a certain displacement is reduced to avoid adding a large lateral stiffness. At the same time, when the lateral displacement exceeds the limit, the two inner side walls of the free gap contact each other to realize the lateral stop function, thereby avoiding the redundancy of the structural parts of the central traction device and achieving lightweight while keeping the lateral, vertical and longitudinal functions unchanged.

[0022] The rail vehicle provided by the embodiment of the present invention installs the aforementioned bogie on the car body, utilizes the installation channel of the traction beam to connect the pin sleeve, and installs the center pin in the pin hole of the pin sleeve to realize the mutual assembly between the traction beam, the pin sleeve and the center pin. The connecting part on the outer surface of the traction beam is connected to the frame through a connecting rod, so that the longitudinal load is transmitted to the frame by the connecting rod. At the same time, the traction beam can also swing with the frame through the connecting rod to release the vertical load. The free gap inside the pin sleeve can make the pin sleeve softer laterally and harder longitudinally. While ensuring the transmission of the longitudinal load, the constraint on the lateral movement within a certain displacement is reduced to avoid adding a large lateral stiffness. At the same time, when the lateral displacement exceeds the limit, the two inner side walls of the free gap contact each other to realize the lateral stop function, thereby avoiding the redundancy of the central traction device structure and achieving lightweight while keeping the lateral, vertical and longitudinal functions unchanged. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 is one of the cross-sectional views of the central traction device provided by the present invention;

[0025] Figure 2 This is the second cross-sectional view of the central traction device provided by the present invention;

[0026] Figure 3 This is the third cross-sectional view of the central traction device provided by the present invention;

[0027] Figure 4It is a schematic diagram of the three-dimensional structure of the central traction device provided by the present invention;

[0028] Figure 5 It is a schematic diagram of the three-dimensional structure of the pin sleeve provided by the present invention.

[0029] Reference numerals:

[0030] 100, traction beam; 110, installation channel; 120, connection part; 200, pin sleeve; 210, pin hole; 220, free gap; 300, center pin; 400, connecting rod; 410, first connecting ring; 420, second connecting ring; 500, pressure cover; 600, frame mounting seat. DETAILED DESCRIPTION

[0031] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0032] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations on the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0033] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0034] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0036] Combine the following Figure 1-Figure 5 The embodiment of the present invention is described. This embodiment provides a central traction device, including a traction beam 100, a pin sleeve 200, a center pin 300 and a connecting rod 400. The traction beam 100 is configured with an installation channel 110 along the height direction, and the outer surface of the traction beam 100 is configured with a connecting portion 120. The pin sleeve 200 is installed in the installation channel 110, and a pin hole 210 and two free gaps 220 are configured in the pin sleeve 200 along the height direction. Along the width direction of the rail vehicle, the two free gaps 220 are respectively located on both sides of the pin sleeve 200. The center pin 300 is installed in the pin hole 210. One end of the connecting rod 400 is connected to the connecting portion 120, and the other end of the connecting rod 400 is suitable for connecting to the frame.

[0037] In this embodiment, the pin sleeve 200 is connected through the installation channel 110 of the traction beam 100, and the center pin 300 is installed in the pin hole 210 of the pin sleeve 200 to realize the mutual assembly between the traction beam 100, the pin sleeve 200 and the center pin 300. The connecting portion 120 on the outer surface of the traction beam 100 is connected to the frame through the connecting rod 400, so as to utilize the connecting rod 400 to transmit the longitudinal load to the frame. At the same time, the traction beam 100 can also swing with the frame through the connecting rod 400 to release the vertical load. The free gap 220 inside the pin sleeve 200 can make the pin sleeve 200 softer in the lateral direction and harder in the longitudinal direction. Under the condition of ensuring the transmission of the longitudinal load, the constraint on the lateral movement within a certain displacement is reduced to avoid adding a large lateral stiffness. At the same time, when the lateral displacement exceeds the limit, the two inner side walls of the free gap 220 contact each other to realize the lateral stop function, thereby avoiding the redundancy of the central traction device structure and achieving lightweight while keeping the lateral, vertical and longitudinal functions unchanged.

[0038] like Figure 4 As shown, the traction beam 100 is substantially cylindrical, and a mounting channel 110 is constructed along the height direction at the center of the traction beam 100 , so that the pin sleeve 200 and the center pin 300 are mounted inside the traction beam 100 .

[0039] The pin sleeve 200 can be made of metal material and rubber vulcanized material, wherein the pin sleeve 200 includes an inner ring and an outer ring, the rubber vulcanized material is filled between the inner ring and the outer ring, a free gap 220 is opened on the rubber vulcanized material, and a pin hole 210 is formed in the middle of the inner ring, thereby forming a pin sleeve 200 structure with a pin hole 210 and a free gap 220.

[0040] The pin sleeve 200 supported by metal material and rubber vulcanized material has low torsional rigidity and can release the rotational freedom between the center pin 300 and the frame.

[0041] Along the width direction of the rail vehicle, the two free gaps 220 are respectively located on both sides of the pin hole 210, so that the pin sleeve 200 can be softer in the transverse direction and harder in the longitudinal direction, and the constraint on the transverse movement within a certain displacement is reduced while ensuring the transmission of the longitudinal load, and the addition of a large transverse rigidity is avoided. At the same time, when the transverse displacement exceeds the limit, the two inner side walls of the free gap 220 contact each other to achieve the transverse stop function. Therefore, during the turning process of the train, the pin sleeve 200 can be used to absorb the transverse torque, playing the role of the traditional transverse stop.

[0042] According to the central traction device provided by the present invention, four connection parts 120 are provided, and the four connection parts 120 are distributed at intervals along the circumference of the outer surface of the traction beam 100, and each two adjacent connection parts 120 are arranged at an angle.

[0043] Four connecting parts 120 can be set to connect four connecting rods 400 on the outer surface of the traction beam 100. Since every two adjacent connecting parts 120 are set at an angle, the four connecting rods 400 are distributed at a certain angle. The longitudinal force can be transmitted to the four directions of the frame through the four connecting rods 400, thereby realizing uniform and dispersed transmission of the longitudinal load.

[0044] The four connection parts 120 can be disposed on the outer surface of the traction beam 100 by integral casting.

[0045] like Figure 1 and Figure 5 As shown, the cross section of the free gap 220 is arc-shaped, and the two free gaps 220 are located on the same circumference, wherein each free gap 220 corresponds to two gap ends, and the positions of the four connecting parts 120 correspond to the four gap ends.

[0046] The arc-shaped free gap 220 can adapt to the shape of the traction beam 100. The two free gaps 220 are not only located on the same circumference, but also arranged symmetrically, and the symmetry axis of the two free gaps 220 is one of the diameter segments of the traction beam 100. The arc-shaped free gap 220 can form two gap ends, and the positions of the four connecting parts 120 correspond to the four gap ends respectively, further ensuring that the longitudinal load is transmitted evenly and dispersedly. At the same time, the lateral load can be limited by the pin sleeve 200.

[0047] In this embodiment, the mounting channel 110 is configured to be tapered from top to bottom, the center pin 300 is adapted to the mounting channel 110, and the center pin 300 is adapted to be inserted into the mounting channel 110 from above the traction beam 100. The tapered mounting channel 110 facilitates the installation of the center pin 300, and corresponding to the tapered mounting channel 110 from top to bottom, the center pin 300 is also configured to be a truncated cone-shaped structure tapered from top to bottom.

[0048] like Figure 2 and Figure 3 As shown, a gland 500 is provided below the traction beam 100, and the gland 500, the pin sleeve 200 and the center pin 300 are suitable for being fixed to each other by fasteners. The gland 500 can protect the traction beam 100, the pin sleeve 200 and the center pin 300 at the bottom. A connecting hole is configured on the gland 500, and a threaded hole is configured at the bottom of the center pin 300. Fasteners such as bolts are sequentially inserted into the connecting hole of the gland 500, the installation channel 110 of the pin sleeve 200 and the threaded hole of the center pin 300 to achieve connection between the gland 500, the pin sleeve 200 and the center pin 300.

[0049] The middle part of the pressure cover 500 protrudes toward the pin sleeve 200 so that the middle part of the pressure cover 500 can abut against the center pin 300, and then cooperate with the locking and fixing of the fastener to form a stable connection between the pressure cover 500, the pin sleeve 200 and the center pin 300.

[0050] According to the central traction device provided by the present invention, one end of the connecting rod 400 is suitable for being installed on the connecting part 120 through a rubber node, and the other end of the connecting rod 400 is suitable for being connected to the frame mounting seat 600 through a rubber node, and the frame mounting seat 600 is suitable for being connected to the frame.

[0051] The two ends of the connecting rod 400 are connected to the connecting portion 120 and the frame mounting seat 600 respectively through the rubber node, and the rubber node and the connecting rod 400 can make the connecting rod 400 and the center pin 300 swing longitudinally, thereby releasing the vertical movement. That is, the vertical load can be released by swinging.

[0052] like Figure 4 As shown, the connecting rod 400 extends in a direction away from the traction beam 100 and is configured with a downwardly inclined bending section. The design of the bending section can make the connecting end of the connecting rod 400 and the frame lower, which is convenient for the structural design of the frame.

[0053] Please continue to refer to Figure 4 The two ends of the connecting rod 400 are respectively configured with a first connecting ring 410 and a second connecting ring 420. The first connecting ring 410 is horizontally arranged, and the first connecting ring 410 is suitable for connecting the rubber node and the fastener to the connecting portion 120. The second connecting ring 420 is vertically arranged, and the second connecting ring 420 is suitable for connecting the rubber node and the fastener to the frame mounting seat 600. After the rubber node is installed, the center hole of the rubber node of the horizontally arranged first connecting ring 410 will be arranged vertically, so as to be connected to the connecting portion 120 through the fastener. After the rubber node is installed, the center hole of the rubber node of the vertically arranged second connecting ring 420 will be arranged horizontally, so as to be connected to the frame mounting seat 600 through the fastener.

[0054] On the other hand, the present invention further provides a bogie, comprising a frame and a central traction device as in the aforementioned embodiment, wherein the central traction device is mounted on the frame.

[0055] In this embodiment, the aforementioned central traction device is installed on the frame, the installation channel 110 of the traction beam 100 is used to connect the pin sleeve 200, and the center pin 300 is installed in the pin hole 210 of the pin sleeve 200, so as to realize the mutual assembly between the traction beam 100, the pin sleeve 200 and the center pin 300. The connecting portion 120 on the outer surface of the traction beam 100 is connected to the frame through the connecting rod 400, so as to transmit the longitudinal load to the frame through the connecting rod 400. At the same time, the traction beam 100 can also form a connection with the frame through the connecting rod 400. Swing to release the vertical load, the free gap 220 inside the pin sleeve 200 can make the pin sleeve 200 softer in the laterally and harder in the longitudinally. Under the condition of ensuring the transmission of the longitudinal load, the constraint on the lateral movement within a certain displacement is reduced to avoid adding a large lateral stiffness. At the same time, when the lateral displacement exceeds the limit, the two inner walls of the free gap 220 contact each other to realize the lateral stop function, thereby avoiding the redundancy of the structural parts of the central traction device and achieving lightweight while retaining the lateral, vertical and longitudinal functions unchanged.

[0056] On the other hand, the present invention further provides a rail vehicle, comprising a vehicle body, wherein the vehicle body is provided with a bogie as in the aforementioned embodiment.

[0057] In this embodiment, the aforementioned bogie is installed on the vehicle body, the mounting channel 110 of the traction beam 100 is used to connect the pin sleeve 200, and the center pin 300 is installed in the pin hole 210 of the pin sleeve 200, so as to realize the mutual assembly between the traction beam 100, the pin sleeve 200 and the center pin 300, and the connecting portion 120 on the outer surface of the traction beam 100 is connected to the frame through the connecting rod 400, so as to transmit the longitudinal load to the frame through the connecting rod 400, and at the same time, the traction beam 100 can also form a swinging motion with the frame through the connecting rod 400. The free gap 220 inside the pin sleeve 200 can make the pin sleeve 200 softer in the transverse direction and harder in the longitudinal direction, thereby reducing the constraint on the transverse movement within a certain displacement while ensuring the transmission of the longitudinal load, and avoiding the addition of a large transverse stiffness. At the same time, when the transverse displacement exceeds the limit, the two inner side walls of the free gap 220 contact each other to realize the transverse stop function, thereby avoiding the redundancy of the structural parts of the central traction device and achieving lightweight while retaining the transverse, vertical and longitudinal functions unchanged.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A central traction device, characterized in that: include: A traction beam (100) is provided with a mounting channel (110) along a height direction, and a connecting portion (120) is provided on an outer surface of the traction beam (100); A pin sleeve (200) is installed in the installation channel (110), wherein a pin hole (210) and two free gaps (220) are configured in the pin sleeve (200) along the height direction, and along the width direction of the rail vehicle, the two free gaps (220) are respectively located on both sides of the pin hole (210); A center pin (300) installed in the pin hole (210); The connecting rod (400) has one end connected to the connecting portion (120) and the other end suitable for connecting to the frame.

2. The central traction device according to claim 1, characterized in that: The number of the connecting portions (120) is four, and the four connecting portions (120) are spaced apart and distributed along the circumferential direction of the outer surface of the traction beam (100), and each two adjacent connecting portions (120) are arranged at an angle.

3. The central traction device according to claim 2, characterized in that: The cross section of the free gap (220) is arc-shaped, and the two free gaps (220) are located on the same circumference, wherein each of the free gaps (220) corresponds to two gap ends, and the positions of the four connecting parts (120) correspond to the four gap ends.

4. The central traction device according to claim 1, characterized in that: In a direction from top to bottom, the installation channel (110) is configured to be tapered, the center pin (300) is adapted to the installation channel (110), and the center pin (300) is suitable for being inserted into the installation channel (110) from above the traction beam (100).

5. The central traction device according to claim 4, characterized in that: A pressure cover (500) is provided below the traction beam (100), and the pressure cover (500), the pin sleeve (200) and the center pin (300) are suitable for being fixed to each other by fasteners.

6. The central traction device according to claim 1, characterized in that: One end of the connecting rod (400) is suitable for being installed on the connecting portion (120) through a rubber node, and the other end of the connecting rod (400) is suitable for being connected to a frame mounting seat (600) through a rubber node, and the frame mounting seat (600) is suitable for being connected to the frame.

7. The central traction device according to claim 6, characterized in that: The connecting rod (400) extends in a direction away from the traction beam (100) and is configured with a downwardly inclined bent section.

8. The central traction device according to claim 6, characterized in that: The two ends of the connecting rod (400) are respectively constructed with a first connecting ring (410) and a second connecting ring (420), wherein the first connecting ring (410) is horizontally arranged, and the first connecting ring (410) is suitable for connecting to the connecting portion (120) through a rubber node and a fastener, and the second connecting ring (420) is vertically arranged, and the second connecting ring (420) is suitable for connecting to the frame mounting seat (600) through a rubber node and a fastener.

9. A bogie, characterized in that: The invention comprises a frame and a central traction device according to any one of claims 1 to 8, wherein the central traction device is mounted on the frame.

10. A rail vehicle, characterized in that: It comprises a car body provided with the bogie as claimed in claim 9.

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