Articulated connector and articulated vehicle

Abstract

The application discloses a joint connector and a joint vehicle. The joint connector comprises a male joint head, a female joint head and a connecting structure. The male joint head is provided with a first mounting cavity and a first mounting hole penetrating through. The female joint head is movably connected with the male joint head, and is provided with a second mounting cavity and a second mounting hole penetrating through. The connecting structure comprises a connecting shaft and a connecting block. The connecting shaft is arranged in the first mounting hole and the second mounting hole in a first direction. The connecting block is arranged in the second mounting cavity. The connecting shaft has a first side and a second side opposite to each other in a second direction. The first side of the connecting shaft abuts against the male joint head. The connecting block abuts against the second side of the connecting shaft and the female joint head. The connecting block is slidably connected with the connecting shaft in a third direction. When the female joint head has a downward moving trend due to long-term use and abrasion, the female joint head can directly drive the connecting block to move downward in the third direction, and the gravity of the female joint head cannot be transmitted to the connecting shaft.

Description

Technical Field

[0001] This application belongs to the field of connector technology, specifically relating to a joint connector and a joint vehicle. Background Technology

[0002] A joint connector is a connecting device between vehicles used to connect adjacent vehicles, allowing them to share a bogie, thereby saving on the number of bogies and reducing the weight of the train. The connector mainly consists of a convex joint head and a concave joint head. A connecting shaft is located within the concave joint head, and the connecting shaft is rotatably connected to the concave joint head via a bearing. The portion of the connecting shaft extending out of the concave joint head connects to the convex joint head.

[0003] Initially, the connecting shaft is generally not subjected to radial stress. However, during long-term use of the connector, the concave joint wears down and tends to move downwards under gravity. At this point, the weight of the concave joint is entirely applied to the connecting shaft, causing radial stress on the connecting bearing. This radial stress can deform the connecting shaft and even cause the connector to malfunction, seriously affecting the service life of the joint connector and driving safety. Summary of the Invention

[0004] To address the aforementioned technical problems, this application discloses a joint connector and a joint vehicle.

[0005] The technical solution adopted to achieve the purpose of this application is as follows: In the first aspect of this application, the present invention discloses a joint connector, comprising: The convex joint head is provided with a first mounting cavity and a first mounting hole penetrating the first mounting cavity; A concave joint head is movably connected to the convex joint head. A portion of the concave joint head is located within the first mounting cavity, and a second mounting cavity and a second mounting hole penetrating the second mounting cavity are provided at the position of the concave joint head corresponding to the first mounting hole. A connecting structure includes a connecting shaft and a connecting block. The connecting shaft passes through the first mounting hole and the second mounting hole along a first direction. The connecting block is located in the second mounting cavity. The connecting shaft has a first side and a second side opposite to each other along a second direction. The first side of the connecting shaft abuts against the convex joint head. The connecting block abuts between the second side of the connecting shaft and the concave joint head. The connecting block and the connecting shaft are slidably connected along a third direction. The second direction is perpendicular to the first direction, the third direction is perpendicular to the second direction, and the third direction is perpendicular to the first direction.

[0006] According to one embodiment of the present invention, along the second direction, one of the connecting shaft and the connecting block is provided with a sliding groove, and the other is provided with a slider, the slider being slidably connected to the sliding groove.

[0007] According to one embodiment of the present invention, a boss is provided on the second side of the connecting shaft, and the slide groove or the slider is provided on the boss.

[0008] According to one embodiment of the present invention, the side of the connecting block away from the connecting shaft is spherical, and the inner wall of the second mounting cavity corresponding to the connecting block is arc-shaped.

[0009] According to one embodiment of the present invention, the outer surface of the convex joint head is provided with a groove, the groove extending to communicate with the first mounting hole; the end of the connecting shaft is provided with a locking block, the locking block engaging in the groove.

[0010] According to one embodiment of the present invention, along the third direction, a wear plate is provided at the bottom of the concave joint head, the end of the wear plate facing the convex joint head is spherical, and the wear plate is slidably connected to the convex joint head.

[0011] According to one embodiment of the present invention, a protective plate is further included, the protective plate being provided with a fixing member, the protective plate being located on top of the convex joint head, and the fixing member extending along the second direction to abut against the second side of the connecting shaft.

[0012] According to one embodiment of the present invention, the device further includes a follower plate and a wedge, both of which are located within the first mounting cavity. The follower plate abuts against the concave joint head, and the concave joint head is rotatably connected to the follower plate. The wedge abuts between the follower plate and the convex joint head.

[0013] According to one embodiment of the present invention, the concave joint head is spherical facing the outer end face of the follower plate, and the follower plate is provided with a positioning groove on the side facing the concave joint head.

[0014] The technical solution adopted to achieve the purpose of this application is as follows: In the second aspect of this application, the present invention also discloses a joint vehicle, which includes at least two vehicles and the joint connector described in the first aspect above, wherein two adjacent vehicles are connected through the joint connector.

[0015] As can be seen from the above technical solution, the joint connector disclosed in this application includes a convex joint head, a concave joint head, and a connecting structure. The convex joint head has a first mounting cavity and a first mounting hole penetrating the first mounting cavity. The concave joint head is movably connected to the convex joint head, a portion of the concave joint head is located within the first mounting cavity, and the concave joint head has a second mounting cavity and a second mounting hole penetrating the second mounting cavity at a position corresponding to the first mounting hole. The connecting structure includes a connecting shaft and a connecting block. The connecting shaft passes through the first mounting hole and the second mounting hole along a first direction, and the connecting block is located within the second mounting cavity. The connecting shaft has a first side and a second side opposite to each other along a second direction. The first side of the connecting shaft abuts against the convex joint head, and the connecting block abuts against the second side of the connecting shaft and the concave joint head. The connecting block and the connecting shaft are slidably connected along a third direction, the second direction being perpendicular to the first direction, the third direction being perpendicular to the second direction, and the third direction being perpendicular to the first direction.

[0016] The joint connector disclosed in this application has a connecting block between the connecting shaft and the concave joint head, and the connecting block and the connecting shaft are slidably connected along a third direction (i.e., the direction of gravity). When the concave joint head tends to move downwards due to wear from long-term use, the concave joint head can directly drive the connecting block to move downwards along the third direction, while the connecting block slides relative to the connecting shaft, thus preventing the gravity of the concave joint head from being transmitted to the connecting shaft. Therefore, the connecting shaft will not bear additional radial stress due to the downward movement of the concave joint head, avoiding the problem of connecting shaft deformation and failure, and significantly extending the service life of the joint connector. Attached Figure Description

[0017] To enable those skilled in the art to more clearly understand this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0018] Figure 1 This is a schematic diagram of a joint connector in one or more embodiments of this application; Figure 2 for Figure 1 Cross-sectional view of the joint connector; Figure 3 for Figure 1 A schematic diagram of the head of the central convex articular articular process; Figure 4 for Figure 1 A schematic diagram of the concave articular head; Figure 5for Figure 1 A schematic diagram of the intermediate connection structure; Figure 6 for Figure 1 A schematic diagram of the connecting shaft; Figure 7 for Figure 1 A schematic diagram of the connecting block; Figure 8 for Figure 1 A schematic diagram of the fit between the center plate and the wedge; Figure 9 for Figure 1 A schematic diagram of the central protective plate.

[0019] Explanation of reference numerals in the attached drawings: 100, convex joint head; 110, first mounting cavity; 120, first mounting hole; 130, slot; 200, concave joint head; 210, wear plate; 220, second mounting cavity; 230, second mounting hole; 300, connecting structure; 310, connecting shaft; 311, slide groove; 312, boss; 313, locking block; 320, connecting block; 321, slider; 400, protective plate; 500, follower plate; 510, positioning groove; 600, wedge. Detailed Implementation

[0020] To enable those skilled in the art to more clearly understand this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0021] Furthermore, reference numerals and / or reference letters may be repeated in different examples in this application. Such repetition is for simplification and clarity purposes and does not in itself indicate a relationship between the various embodiments and / or settings discussed. In addition, this application provides examples of various specific processes and materials; however, those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0023] This invention discloses a joint connector and a joint vehicle, which can solve the technical problem in the prior art where the connecting bearing is subjected to radial stress and is prone to deformation and failure due to the downward displacement of the concave joint head caused by wear.

[0024] The technical solutions of this application will be described in detail below through specific embodiments and in conjunction with the accompanying drawings, which are not necessarily drawn to scale. Similar or identical reference numerals may be used to designate the same or similar parts in different figures. The use of similar or identical reference numerals in different figures does not mean that all figures including similar or identical reference numerals constitute a single or the same embodiment. The accompanying drawings illustrate the various embodiments discussed in this application in a generalized manner, by way of example and not limitation.

[0025] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 In a first aspect embodiment of this application, a joint connector is disclosed, comprising a convex joint head 100, a concave joint head 200, and a connecting structure 300. The bottom of the convex joint head 100 is provided with a center pin for connecting and engaging with the center plate of the bogie (i.e., the center slewing bearing structure on the bogie), allowing adjacent vehicles to be supported on the same bogie. The convex joint head 100 has a first mounting cavity 110 and a first mounting hole 120 penetrating the first mounting cavity 110. The first mounting cavity 110 is generally U-shaped or C-shaped, and the first mounting hole 120 penetrates two sidewalls of the convex joint head 100 along a first direction.

[0026] The concave joint head 200 is movably connected to the convex joint head 100. A portion of the concave joint head 200 is located in the first mounting cavity 110. The concave joint head 200 is provided with a second mounting cavity 220 and a second mounting hole 230 that penetrates the second mounting cavity 220 at the position corresponding to the first mounting hole 120. The second mounting hole 230 is substantially coaxial with the first mounting hole 120.

[0027] The connecting structure 300 includes a connecting shaft 310 and a connecting block 320. The connecting shaft 310 passes through the first mounting hole 120 and the second mounting hole 230 along a first direction, that is, the connecting shaft 310 sequentially passes through one side wall of the convex joint head 100, one side wall of the concave joint head 200, the second mounting cavity 220, the other side wall of the concave joint head 200, and the other side wall of the convex joint head 100. The connecting block 320 is located within the second mounting cavity 220. The length of the connecting block 320 is less than the length of the connecting shaft 310, and the connecting block 320 mates with the portion of the connecting shaft 310 located within the second cavity.

[0028] The connecting shaft 310 has a first side and a second side along a second direction. The first side of the connecting shaft 310 abuts against the convex joint head 100, specifically against the wall of the first mounting hole 120 or a stepped surface on the hole wall. The connecting block 320 abuts between the second side of the connecting shaft 310 and the concave joint head 200. More specifically, one side of the connecting block 320 contacts the second side surface of the connecting shaft 310, and the other side of the connecting block 320 contacts the inner wall of the second mounting cavity 220. The connecting block 320 and the connecting shaft 310 are slidably connected along a third direction.

[0029] The second direction is perpendicular to the first direction, the third direction is perpendicular to the second direction, and the third direction is perpendicular to the first direction.

[0030] See Figure 2 It should be noted that in this embodiment, the direction perpendicular to the paper in the figure is the first direction (i.e., the vehicle's transverse direction), the horizontal direction in the figure is the second direction (i.e., the vehicle's longitudinal direction), and the vertical direction in the figure is the third direction (i.e., the direction of gravity).

[0031] The articulated connector disclosed in this embodiment has a connecting block 320 between the connecting shaft 310 and the concave articulated head 200, and the connecting block 320 and the connecting shaft 310 are slidably connected along a third direction. When the concave articulated head 200 tends to move downward due to wear from long-term use, the concave articulated head 200 can directly drive the connecting block 320 to move downward along a third direction, while the connecting block 320 slides relative to the connecting shaft 310, thus preventing the weight of the concave articulated head 200 from being transmitted to the connecting shaft 310. Therefore, the connecting shaft 310 will not bear additional radial stress due to the downward movement of the concave articulated head 200, avoiding the problem of bending deformation or fatigue fracture of the connecting shaft 310 due to long-term loads in non-design directions, and significantly extending the service life of the articulated connector.

[0032] See Figure 2 , Figure 6 and Figure 7 In one embodiment, along the second direction, one of the connecting shaft 310 and the connecting block 320 is provided with a groove 311, and the other is provided with a slider 321, which is slidably connected to the groove 311. Specifically, the groove 311 extends along a third direction, and the slider 321 can slide freely along the groove 311 in the third direction, while being limited in the second and first directions.

[0033] The sliding connection between the connecting block 320 and the connecting shaft 310 along the third direction is achieved through the cooperation of the sliding groove 311 and the slider 321, which is simple in structure and reliable in motion.

[0034] The following embodiment illustrates an example where a groove 311 is disposed on the connecting shaft 310 and a slider 321 is disposed on the connecting block 320. Specifically, the second side surface of the connecting shaft 310 has a recessed groove 311 along a third direction, and the connecting block 320 has a slider 321 protruding from the side facing the connecting shaft 310. The slider 321 is embedded in the groove 311 and can slide up and down along the groove 311. Of course, in other embodiments, it is also possible to dispose of the groove 311 on the connecting block 320 and the slider 321 on the connecting shaft 310. That is, the connecting block 320 has a groove 311 on the side facing the connecting shaft 310, and the second side surface of the connecting shaft 310 has a slider 321 protruding from the groove 311. Both methods achieve the same sliding function, and those skilled in the art can choose based on processing convenience and structural strength requirements.

[0035] In one embodiment, the cross-section of the groove 311 is T-shaped or dovetail-shaped, and correspondingly, the cross-section of the slider 321 is also T-shaped or dovetail-shaped.

[0036] The T-shaped or dovetail-shaped mating structure ensures that the slider 321 will not disengage from the groove 311 when sliding along it, thus reliably limiting its movement in both the second and first directions, retaining only one degree of freedom of movement in the third direction. This design improves the connection reliability between the connecting block 320 and the connecting shaft 310, preventing them from separating under vehicle vibration conditions.

[0037] In one embodiment, a boss 312 is provided on the second side of the connecting shaft 310, and a groove 311 or a slider 321 is provided on the boss 312.

[0038] Specifically, the boss 312 protrudes rearward from the second side surface of the connecting shaft 310 along the second direction, forming a rectangular or trapezoidal protrusion. The boss 312 structure provides sufficient installation space and material thickness for the groove 311 or the slider 321, while ensuring the residual strength of the connecting shaft 310 after the groove 311 is opened, and avoiding a decrease in bending stiffness of the connecting shaft 310 due to excessive reduction in cross-section.

[0039] In one embodiment, the boss 312 and the connecting shaft 310 are integrally forged or cast. The material can be high-strength alloy steel such as 40Cr or 42CrMo, and it is heat-treated to achieve a hardness of HB 280~320, ensuring sufficient wear resistance and impact resistance. In another alternative embodiment, the boss 312 can also be fixed to the second side surface of the connecting shaft 310 by welding. Friction welding or laser welding can be used to reduce the heat-affected zone and ensure connection accuracy.

[0040] In one embodiment, the side of the connecting block 320 away from the connecting shaft 310 is spherical, and the inner wall of the second mounting cavity 220 corresponding to the connecting block 320 is arc-shaped.

[0041] The spherical outer wall of the connecting block 320 cooperates with the arcuate inner wall of the second mounting cavity 220, allowing the connecting block 320 to rotate freely within the second mounting cavity 220, thereby enabling the concave joint head 200 to rotate relative to the convex joint head 100 in any direction, thus adapting to the working conditions of the vehicle going uphill or turning.

[0042] In one embodiment, a self-lubricating bushing is provided between the spherical surface of the connecting block 320 and the arcuate inner wall of the second mounting cavity 220. The self-lubricating bushing may be made of copper-based powder metallurgy material and has embedded graphite lubrication points.

[0043] This bushing reduces the coefficient of friction in the spherical contact area, reduces wear, and avoids abnormal noise and jamming caused by poor lubrication. It is particularly suitable for maintenance-free or low-maintenance applications.

[0044] In one embodiment, the outer surface of the convex joint head 100 is provided with a groove 130, which extends to communicate with the first mounting hole 120. Specifically, the groove 130 is disposed on one or both outer walls of the convex joint head 100 along the first direction, and the opening direction of the groove 130 faces outward in the first direction. The end of the connecting shaft 310 is provided with a locking block 313, which engages with the groove 130. The locking block 313 may be an annular flange integrally formed with the connecting shaft 310, or it may be an independent part fixed to the end of the connecting shaft 310 by threaded connection or pin connection. The shape of the locking block 313 is adapted to the shape of the groove 130.

[0045] The engagement between the locking block 313 and the locking slot 130 enables a reliable connection between the connecting shaft 310 and the convex joint head 100, preventing the connecting shaft 310 from coming out of the first mounting hole 120 along the first direction during vehicle operation vibration, thus improving the safety of the system.

[0046] In one embodiment, along a third direction, the bottom of the concave joint head 200 is provided with a wear plate 210, the end of the wear plate 210 facing the convex joint head 100 is spherical, and the wear plate 210 is slidably connected to the convex joint head 100. Correspondingly, the bottom wall of the first mounting cavity 110 of the convex joint head 100 is provided with a spherical concave surface, and the wear plate 210 and the convex joint head 100 are slidably connected through the spherical surface.

[0047] Wear disc 210, as a sacrificial component, bears the sliding friction wear generated by the relative rotation between the convex joint head 100 and the concave joint head 200. When wear disc 210 wears to a certain extent, it can be disassembled and replaced separately without replacing the more valuable convex joint head 100 and concave joint head 200 bodies, significantly reducing maintenance costs. Wear disc 210 can be made of tin bronze (ZCuSn10Pb1) or high-strength brass with excellent wear resistance. Its hardness should be lower than that of the base material of convex joint head 100 and concave joint head 200 to ensure that wear mainly occurs on wear disc 210, protecting the base material from damage.

[0048] See Figure 1 and Figure 9 In one embodiment, the joint connector further includes a protective plate 400, which is provided with a fixing member and is located on top of the convex joint head 100. The protective plate 400 is located on top of the convex joint head 100, covering the upper opening of the first mounting cavity 110, and serves to prevent dust, water, and debris from entering the first mounting cavity 110, thereby avoiding abnormal wear or corrosion of the connecting shaft 310, connecting block 320, and spherical mating area.

[0049] The fastener extends along the second direction to abut against the second side of the connecting shaft 310. Specifically, the fastener extends downward or backward from the main body of the protective plate 400 in a cantilever shape, with its end abutting against the second side surface of the connecting shaft 310, applying a preload or limiting force forward along the second direction to the connecting shaft 310. The protective plate 400 serves both a protective function and, through the fastener, axially limits the connecting shaft 310, preventing it from shifting along the second direction under vehicle vibration conditions.

[0050] See Figure 1 and Figure 8 In one embodiment, the joint connector further includes a slave plate 500 and a wedge 600. Both the slave plate 500 and the wedge 600 are located within the first mounting cavity 110. The slave plate 500 abuts against the concave joint head 200, and the concave joint head 200 is rotatably connected to the slave plate 500. The wedge 600 abuts between the slave plate 500 and the convex joint head 100.

[0051] Plate 500 and wedge 600 are used to transmit compressive loads, and the self-locking principle of wedge 600 automatically eliminates the connection gap caused by wear.

[0052] In one embodiment, the concave joint head 200 is spherical facing the outer end face of the plate 500, and a positioning groove 510 is provided on the side of the plate 500 facing the concave joint head 200.

[0053] The spherical outer end face of the concave joint head 200 mates with the positioning groove 510 of the slave plate 500, allowing the concave joint head 200 to rotate relative to the slave plate 500 in any direction, further enhancing the flexibility of the joint connector.

[0054] In one embodiment, at least one of the plate 500 and the concave joint head 200 is provided with an inclined surface so that the wedge 600 has a tendency to move downward under the action of gravity. After the plate 500 is worn, the wedge 600 will push the plate 500 to always abut against the convex joint head 100 when it moves downward, and make the convex joint head 100 always abut against the connecting block 320, so as to realize automatic compensation of wear gap.

[0055] In one embodiment, the automatic downward displacement compensation of the wedge 600 can also be achieved through spring force. Specifically, a compression spring is placed above the wedge 600, with one end abutting against the convex joint head 100 and the other end abutting against the top of the wedge 600. The spring force pushes the wedge 600 downward, achieving the same or complementary compensation effect as gravity-driven operation. This method is particularly suitable for applications where the installation direction of the wedge 600 is not perpendicular to the direction of gravity.

[0056] In this application, the convex joint head 100 is generally installed as a fixed part on the rear vehicle, and the concave joint head 200 is installed as a movable part on the front vehicle. At the instant the front vehicle goes uphill, the front end of the concave joint head 200 tilts downward, and the part of the concave joint head 200 that mates with the convex joint head 100 rotates upward. At this time, the entire concave joint head 200 rotates relative to itself in a first direction. At the instant the front vehicle goes downhill, the front end of the concave joint head 200 tilts upward, and the part of the concave joint head 200 that mates with the convex joint head 100 rotates downward. At this time, the entire concave joint head 200 rotates relative to itself in a first direction. At the instant the front vehicle turns left, the front end of the concave joint head 200... When the concave joint head 200 swings to the right, the part that engages with the convex joint head 100 rotates to the left. At this time, the entire concave joint head 200 rotates relative to the concave joint head 200 in a third direction. At the instant the vehicle in front turns right, the front end of the concave joint head 200 swings to the left, and the part that engages with the convex joint head 100 rotates to the right. At this time, the entire concave joint head 200 rotates relative to the concave joint head 200 in a third direction. When the vehicle in front encounters a sloping road surface, the concave joint head 200 rotates relative to the concave joint head 200 in a second direction along with the vehicle in front.

[0057] In actual driving, the aforementioned road conditions often occur in combination. For example, when a vehicle turns on a slope or on an inclined road, the concave joint 200 needs to rotate simultaneously in two or three of the first, second, and third directions. In this application, the inner wall of the convex joint 100 forms a spherical fit with the connecting block 320 through an arc surface, and the outer wall of the convex joint 100 forms a spherical fit with the slave plate 500 through a spherical surface. This double spherical joint structure allows the concave joint 200 to rotate freely in any combined direction of the first, second, and third directions, thereby fully adapting to the complex motion requirements under uphill, downhill, turning, inclined road conditions, and their combinations, ensuring that the joint connector always maintains a flexible and reliable connection.

[0058] Through the above embodiments, this application has the following beneficial effects or advantages: When the concave joint head 200 of the joint connector disclosed in this application tends to move downward due to wear from long-term use, the concave joint head 200 can directly drive the connecting block 320 to move downward in a third direction, without transmitting the gravity of the concave joint head 200 to the connecting shaft 310, significantly extending the service life of the joint connector. The side of the connecting block 320 away from the connecting shaft 310 is spherical, which mates with the spherical inner wall of the arc surface of the second mounting cavity 220, allowing the concave joint head 200 to rotate relative to the convex joint head 100 in any direction. The spherical outer end face of the concave joint head 200 mates with the spherical surface of the positioning groove 510 of the follower plate 500, realizing flexible movement of the connector in three directions: horizontal rotation, vertical swing, and lateral roll. In the mating structure of the follower plate 500 and the wedge 600, the wedge 600 tends to move downward under the action of gravity. When the slave plate 500 wears down due to long-term use, the wedge 600 automatically moves downwards, pushing the slave plate 500 to always be pressed against the convex joint head 100, and simultaneously ensuring that the convex joint head 100 is always pressed against the connecting block 320. This automatic compensation mechanism ensures that the joint connector maintains a gapless connection state for a long time, avoiding impact and noise caused by increased gaps. The wear disc 210 is disposed between the concave joint head 200 and the cavity wall of the first mounting cavity 110, serving as a sacrificial component to withstand the relative rotational wear between the convex joint head 100 and the concave joint head 200. When the wear disc 210 wears down, only the wear disc 210 needs to be replaced, without replacing the more valuable convex joint head 100 and concave joint head 200 bodies, thus reducing maintenance costs.

[0059] Based on the same inventive concept, a second aspect of this application discloses a jointed vehicle, which includes at least two vehicles and a joint connector disclosed in any of the first aspects above. Adjacent vehicles are connected via the joint connector. The concave joint head 200 in the joint connector is connected to the preceding vehicle, the convex joint head 100 in the joint connector is connected to the following vehicle, and the center pin in the joint connector is connected to the bogie.

[0060] The articulated car disclosed in this application utilizes the aforementioned articulated connector, resulting in a longer connector lifespan and lower maintenance costs. The vehicle disclosed in this application can be an articulated passenger car, tram, mining dump truck, or engineering machinery train, etc.

[0061] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention have been clearly and completely described above with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0062] Therefore, the above detailed description of the embodiments of the invention disclosed in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0063] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0064] In the description of this invention, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0065] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0066] In this invention, unless otherwise expressly specified and limited, "above or below" a first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0067] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0068] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A joint connector, characterized in that, include: The convex joint head is provided with a first mounting cavity and a first mounting hole penetrating the first mounting cavity; A concave joint head is movably connected to the convex joint head. A portion of the concave joint head is located within the first mounting cavity, and a second mounting cavity and a second mounting hole penetrating the second mounting cavity are provided at the position of the concave joint head corresponding to the first mounting hole. A connecting structure includes a connecting shaft and a connecting block. The connecting shaft passes through the first mounting hole and the second mounting hole along a first direction. The connecting block is located in the second mounting cavity. The connecting shaft has a first side and a second side opposite to each other along a second direction. The first side of the connecting shaft abuts against the convex joint head. The connecting block abuts between the second side of the connecting shaft and the concave joint head. The connecting block and the connecting shaft are slidably connected along a third direction. The second direction is perpendicular to the first direction, the third direction is perpendicular to the second direction, and the third direction is perpendicular to the first direction.

2. The joint connector according to claim 1, characterized in that, Along the second direction, one of the connecting shaft and the connecting block is provided with a sliding groove, and the other is provided with a slider, the slider being slidably connected to the sliding groove.

3. The joint connector according to claim 2, characterized in that, A boss is provided on the second side of the connecting shaft, and the slide groove or the slider is provided on the boss.

4. The joint connector according to claim 1, characterized in that, The side of the connecting block away from the connecting shaft is spherical, and the inner wall of the second mounting cavity corresponding to the connecting block is arc-shaped.

5. The joint connector according to claim 1, characterized in that, The outer surface of the convex joint head is provided with a groove, which extends to communicate with the first mounting hole; The end of the connecting shaft is provided with a locking block, which is engaged in the slot.

6. The joint connector according to claim 1, characterized in that, Along the third direction, a wear plate is provided at the bottom of the concave joint head, and the end of the wear plate facing the convex joint head is spherical, and the wear plate is slidably connected to the convex joint head.

7. The joint connector according to claim 1, characterized in that, It also includes a protective plate, which is provided with a fixing member. The protective plate is located on the top of the convex joint head, and the fixing member extends along the second direction to abut against the second side of the connecting shaft.

8. The joint connector according to claim 1, characterized in that, It also includes a follower plate and a wedge, both of which are located within the first mounting cavity. The follower plate abuts against the concave joint head, and the concave joint head is rotatably connected to the follower plate. The wedge abuts between the follower plate and the convex joint head.

9. The joint connector according to claim 8, characterized in that, The concave joint head is spherical facing the outer end face of the follower plate, and the follower plate has a positioning groove on the side facing the concave joint head.

10. A type of articulated vehicle, characterized in that, It includes at least two vehicles and a joint connector as described in any one of claims 1 to 9, wherein two adjacent vehicles are connected via the joint connector.

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