Guide cantilever assembly, steering mechanism and rail vehicle

Abstract

The utility model relates to a guide cantilever assembly, a steering mechanism and a rail vehicle, a butt joint groove is formed in the side face of a slewing bearing, one side of a guide cantilever is inserted into the butt joint groove, so that the slewing bearing can achieve the mounting, positioning and supporting effects on the guide cantilever, and the butt joint groove of the slewing bearing limits sliding of the guide cantilever; therefore, transverse shear force borne by the connecting assembly is reduced, fatigue fracture of the connecting assembly due to overlarge transverse shear force is prevented, the service life of the connecting assembly is effectively prolonged, and the risk that the slewing bearing and the guide cantilever are separated due to fatigue damage of the connecting assembly is reduced.

Description

Technical Field

[0001] This application relates to the field of rail transit technology, and in particular to a guide cantilever assembly, a steering mechanism, and a rail vehicle. Background Technology

[0002] In related technologies, steering mechanisms utilize components such as slewing bearings, guide cantilever arms, guide wheels, and tie rods to achieve steering of rail vehicles. However, in these technologies, the slewing bearing and guide cantilever arm are connected by bolts. During rail vehicle operation, lateral excitation is generated, and the guide cantilever arm transmits this lateral excitation to the slewing bearing via bolts. The bolts must withstand all the lateral shear forces, making them prone to fatigue fracture. This can lead to separation of the guide cantilever arm and slewing bearing, affecting the operational safety of the rail vehicle. Utility Model Content

[0003] This application provides a guide cantilever assembly, a steering mechanism, and a rail vehicle to improve the technical problem of bolts breaking due to large lateral shear forces, leading to the separation of the guide cantilever and the slewing bearing.

[0004] To achieve the above objectives, according to a first aspect of this application, a guide cantilever assembly is provided, the guide cantilever assembly comprising:

[0005] Slewing bearing;

[0006] Guide cantilever, used to connect guide wheels;

[0007] The slewing bearing is provided with a docking groove, and the guide cantilever is inserted into the docking groove to restrict the movement of the guide cantilever within the docking groove along the circumferential direction of the slewing bearing.

[0008] Optionally, the mating groove is disposed on the circumferential surface of the slewing bearing.

[0009] Optionally, the guide cantilever assembly includes two guide cantilever arms, the slewing bearing is provided with two mating grooves, the two mating grooves are arranged circumferentially on the slewing bearing, and the two guide cantilever arms are respectively inserted into the two mating grooves.

[0010] Optionally, the two mating grooves are arranged in a centrally symmetrical manner with respect to the central axis of the slewing bearing.

[0011] Optionally, the guide cantilever is interference-fitted with the docking groove.

[0012] Optionally, the guide cantilever includes a plug-in portion that engages with the mating groove; the guide cantilever assembly further includes a connecting component for fixing the guide cantilever and the slewing bearing together.

[0013] Optionally, the slewing bearing includes a first limiting portion and a second limiting portion disposed opposite to each other, the first limiting portion and the second limiting portion defining the mating groove, and at least a portion of the insertion portion engaging with the mating groove.

[0014] Optionally, the insertion portion includes a first stepped portion and a second stepped portion, the first stepped portion and the second stepped portion being disposed opposite to each other to define an insertion groove, the first stepped portion being inserted into the mating groove, and the second limiting portion being inserted into the insertion groove.

[0015] Optionally, the first stepped portion is interference-fitted with the mating groove, and the second limiting portion is interference-fitted with the insertion groove.

[0016] Optionally, both the first limiting part and the second limiting part are provided with multiple through holes communicating with the docking groove, and both the first step part and the second step part are provided with multiple connecting holes. The through holes and the connecting holes are aligned one-to-one. The connecting component connects the first limiting part and the first step part through the through holes and the connecting holes, and connects the second limiting part and the second step part.

[0017] Optionally, the through hole on the first limiting part and the through hole on the second limiting part are offset.

[0018] Optionally, the connecting assembly includes a plurality of connectors, each of which is threaded into a pair of aligned through holes and connecting holes.

[0019] Optionally, the plug-in portion has multiple connecting holes, and the slewing bearing has multiple through holes communicating with the docking groove. The connecting holes and the through holes are aligned one-to-one, and the connecting assembly fixes the plug-in portion in the docking groove through the through holes and the connecting holes.

[0020] Optionally, the connecting assembly includes a plurality of quick-release members, each of which is inserted into a pair of aligned through holes and connecting holes to restrict the movement of the insertion part within the mating groove.

[0021] Optionally, the quick-release component includes a limiting block, a connecting rod, an elastic element, and an end cap. The limiting block is detachably connected to the connecting rod. The elastic element is sleeved on the connecting rod, and its two ends are respectively connected to the limiting block and the end cap. The end of the connecting rod away from the limiting block passes through the end cap. The end cap is detachably fixed to the slewing bearing to block the through hole. The side of the limiting block away from the elastic element is used to insert into the aligned through hole and connecting hole to fix the insertion part into the mating groove.

[0022] Optionally, the portion of the connecting rod that passes through the end cap has a quick-release hole for connecting a disassembly fixture, so that the limiting block can be disengaged from the connecting hole under the action of the disassembly fixture.

[0023] According to a second aspect of this application, a steering mechanism is provided, comprising:

[0024] The guide cantilever assembly as described in the first aspect;

[0025] A steering assembly, mounted on the guide cantilever, is used to transmit steering excitation to the axle of the rail vehicle;

[0026] The guide wheel is connected to the end of the guide cantilever away from the slewing bearing and is used to guide the rail vehicle in conjunction with the track.

[0027] According to a third aspect of this application, a rail vehicle is also provided, including a steering mechanism as described in the second aspect.

[0028] In the guide cantilever assembly of this application embodiment, a docking groove is opened in the slewing bearing, and one side of the guide cantilever is inserted into the docking groove. The docking groove plays a role in installing, positioning and supporting the guide cantilever, and restricts the slippage of the guide cantilever. Since the inner wall of the docking groove directly restricts the circumferential movement of the guide cantilever in the slewing bearing, the lateral shear force on the connecting component is reduced, preventing the connecting component from fatigue fracture due to excessive lateral shear force. This provides a certain degree of protection for the connecting component, effectively extends the service life of the connecting component, and reduces the risk of separation between the slewing bearing and the guide cantilever due to fatigue damage of the connecting component.

[0029] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0032] Figure 1 This is a schematic diagram of the structure of a steering mechanism cooperating with an axle provided in an exemplary embodiment of this disclosure;

[0033] Figure 2 yes Figure 1A schematic diagram of the steering mechanism in the diagram;

[0034] Figure 3 yes Figure 2 A schematic diagram of the guide cantilever structure in the diagram;

[0035] Figure 4 yes Figure 2 A schematic diagram of the slewing bearing in the diagram;

[0036] Figure 5 This is a schematic diagram of another steering mechanism cooperating with an axle provided in an exemplary embodiment of this disclosure;

[0037] Figure 6 yes Figure 5 A schematic diagram of the steering mechanism in the diagram;

[0038] Figure 7 yes Figure 6 A schematic diagram of the guide cantilever structure in the diagram;

[0039] Figure 8 yes Figure 6 A schematic diagram of the slewing bearing in the diagram;

[0040] Figure 9 yes Figure 6 A schematic diagram of the quick-release mechanism in the connecting components;

[0041] Figure 10 yes Figure 9 An explosion diagram;

[0042] Figure 11 yes Figure 9 A cross-sectional schematic diagram.

[0043] Explanation of reference numerals in the attached figures:

[0044] 1. Guide cantilever assembly; 11. Slewing bearing; 111. Connecting groove; 112. First limiting part; 113. Second limiting part; 114. Through hole; 115. Rotating body; 116. Fixed body;

[0045] 12. Guide cantilever; 121. Insertion part; 122. First step part; 123. Second step part; 124. Connecting hole; 125. Insertion groove; 126. Guide arm;

[0046] 13. Connecting assembly; 131. Quick-release component; 132. Limiting block; 133. Connecting rod; 134. Elastic component; 135. End cap; 136. Quick-release hole;

[0047] 2. Steering assembly; 21. Steering tie rod; 22. Steering arm;

[0048] 3. Guide wheels;

[0049] 4. Axle. Detailed Implementation

[0050] The technical solutions of 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 them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0051] Please see Figure 1 and Figure 2 or Figure 5 and Figure 6 This application provides a steering mechanism applicable to vehicles, particularly rail vehicles, to assist in vehicle steering. The steering mechanism works in conjunction with the track to achieve steering of the rail vehicle. The steering mechanism includes a guide cantilever assembly 12, a steering component 2, and a guide wheel 3. The steering component 2 is mounted on the guide cantilever 12 and transmits steering excitation to the axle 4 of the rail vehicle. The steering excitation transmitted by the steering component 2 mainly comes from the guide wheel 3, and this steering excitation is primarily for the steering excitation generated when the rail vehicle is turning. If the rail vehicle is traveling in a straight line, the steering component 2 does not transmit steering excitation. The guide wheel 3 is connected to the end of the guide cantilever 12 away from the slewing bearing 11 and works in conjunction with the track to guide the rail vehicle.

[0052] In some embodiments, the steering assembly 2 includes two steering tie rods 21 and two steering arms 22. The two steering tie rods 21 are disposed opposite to each other, and the two steering arms 22 are located between the two steering tie rods 21 and disposed opposite to each other. The steering tie rods 21 are connected to the guide arm assembly 1. One end of one steering arm 22 is connected to the two steering tie rods 21 respectively, and one end of the other steering arm 22 is connected to the steering tie rod 21, and the other end is connected to the axle 4. The steering arm 22 with both ends connected to the steering tie rods 21 and its middle part is also connected to the axle 4, so that the steering excitation of the steering assembly 2 can be transmitted to the axle 4. The two ends of the steering tie rods 21 are configured as ball joints. The two ends of one steering tie rod 21 are movably connected to the two steering arms 22 respectively, so that the steering tie rod 21 and the steering arm 22 can rotate relative to each other. One end of the other steering tie rod 21 is movably connected to one steering arm 22, and the other end is movably connected to the guide arm assembly 1, so that the force of the guide arm assembly 1 can be transmitted to the steering assembly 2, and the steering assembly 2 then transmits the force to the axle 4.

[0053] In some embodiments, see Figure 3 or Figure 7The guide cantilever assembly 1 includes a slewing bearing 11, a guide cantilever 12, and a connecting assembly 13. The slewing bearing 11 has a mating groove 111. The guide cantilever 12 is used to connect to the guide wheel 3, with the side of the guide cantilever 12 away from the guide wheel 3 inserted into the mating groove 111 to restrict the movement of the guide cantilever 12 within the mating groove 111 along the circumference of the slewing bearing 11. The connecting assembly 13 passes through the slewing bearing 11 and the guide cantilever 12 to fix the slewing bearing 11 and the guide cantilever 12 together.

[0054] By creating a mating groove 111 on the side of the slewing bearing 11 and inserting one side of the guide cantilever 12 into the mating groove 111, the slewing bearing 11 can provide installation, positioning, and support for the guide cantilever 12. The mating groove 111 of the slewing bearing 11 restricts the slippage of the guide cantilever 12. Then, the connecting assembly 13 connects the guide cantilever 12 and the slewing bearing 11. This allows part of the excitation received by the guide wheel 3 to be transmitted to the slewing bearing 11 through the connecting assembly 13, while another part, due to the inner wall of the mating groove 111 directly restricting the circumferential movement of the guide cantilever 12 within the slewing bearing 11, can be directly transmitted to the slewing bearing 11 through the guide cantilever 12. This reduces the lateral shear force on the connecting assembly 13, preventing fatigue fracture due to excessive lateral shear force, thus providing some protection for the connecting assembly 13, effectively extending its service life, and reducing the risk of separation between the slewing bearing 11 and the guide cantilever 12 due to fatigue damage of the connecting assembly 13.

[0055] Furthermore, the docking groove 111 is provided on the circumferential surface of the slewing bearing 11 so that the guide cantilever 12 can be directly inserted into the docking groove 111 of the slewing bearing 11, thereby enabling the guide cantilever 12 to rotate synchronously with the rotation of the slewing bearing 11.

[0056] Furthermore, the guide arm assembly includes two guide arms 12. Two spaced-apart grooves 111 are formed on the circumferential side of the slewing bearing 11. The two guide arms 12 are inserted into the two grooves 111 respectively, allowing the guide wheel 3 to transmit excitation to the guide arm 12, which then transmits the excitation to the slewing bearing 11, and finally to the axle 4. Each guide arm 12 includes two guide arms 126, with their ends spaced apart for connecting to the guide wheel 3. Since there are two guide arms 12, a total of four guide wheels 3 can be connected. This reduces the number of guide arms 12 while accommodating the installation of four guide wheels 3, ensuring the stability of the steering mechanism.

[0057] Furthermore, the two docking slots 111 are centrally symmetrical about the central axis of the slewing bearing 11, so that the two guide cantilevers 12 are also centrally symmetrical, and the four guide arms 126 of the two guide cantilevers 12 can be connected to the four guide wheels 3 respectively. The spacing of the four guide wheels 3 is conducive to improving the working stability of the steering mechanism.

[0058] In some embodiments, see Figure 3 and Figure 4 The slewing bearing 11 includes a cylindrical fixed body 116 and a cylindrical rotating body 115. The rotating body 115 is fitted onto the fixed body 116, which is connected to the axle 4. The inner side of the rotating body 115 and the outer side of the fixed body 116 are rotatably engaged by ball bearings, allowing the rotating body 115 to rotate relative to the fixed body 116 to guide the rail vehicle in conjunction with the guide wheel 3, guide cantilever 12, and steering assembly 2. A docking groove 111 is formed on the outer side of the rotating body 115 so that the guide cantilever 12 can be connected to the rotating body 115.

[0059] In some embodiments, the guide cantilever 12 is interference-fitted with the mating groove 111, so that when the guide cantilever 12 is inserted into the mating groove 111, the side of the guide cantilever 12 always abuts against the inner wall of the mating groove 111. This allows the guide cantilever 12 to directly transmit part of the excitation to the rotating body 115 during excitation transmission, reducing the excitation received by the connecting assembly 13 and preventing damage to the connecting assembly 13. Of course, in other embodiments, the guide cantilever 12 and the mating groove 111 can also adopt a transition fit to facilitate the disassembly of the guide cantilever 12 from the mating groove 111. However, for excitation sharing, the effect will be reduced compared to the interference fit. Therefore, in this embodiment, the guide cantilever 12 and the mating groove 111 are preferably interference-fitted.

[0060] In some embodiments, see Figure 3 and Figure 4 The slewing bearing 11 includes a first limiting part 112 and a second limiting part 113 disposed opposite to each other. The first limiting part 112 and the second limiting part 113 define a mating groove 111, and at least a portion of the insertion part 121 is inserted into the mating groove 111 to facilitate the insertion and engagement of the guide cantilever 12 and the slewing bearing 11.

[0061] Furthermore, the insertion portion 121 includes a first stepped portion 122 and a second stepped portion 123. The first stepped portion 122 and the second stepped portion 123 are arranged opposite to each other to define an insertion groove 125. The first stepped portion 122 is inserted into the mating groove 111, and the second limiting portion 113 is inserted into the insertion groove 125, so that the connection between the insertion portion 121 and the slewing bearing 11 is an interlocking structure, which is beneficial to improving the connection stability between the insertion portion 121 and the slewing bearing 11. In addition, for the transmission of excitation, it can also transmit as much of the vertical and lateral excitation received by the guide cantilever 12 as possible to the slewing bearing 11, so as to reduce the lateral shear force received by the connecting assembly 13 and improve the service life of the connecting assembly 13.

[0062] In some embodiments, the first stepped portion 122 is interference-fitted with the mating groove 111, and the second limiting portion 113 is interference-fitted with the insertion groove 125, so that the first stepped portion 122 can always abut against the side wall of the mating groove 111 after being inserted into the mating groove 111, and the second limiting portion 113 can always abut against the side wall of the insertion groove 125 after being inserted into the insertion groove 125, thereby improving the connection stability of the slewing bearing 11 and the guide cantilever 12 and facilitating the direct transmission of the excitation received by the guide cantilever 12 to the slewing bearing 11.

[0063] In some embodiments, the first limiting part 112 and the second limiting part 113 are each provided with a plurality of through holes 114 communicating with the docking groove 111, and the first step part 122 and the second step part 123 are each provided with a plurality of connecting holes 124. The through holes 114 and the connecting holes 124 are aligned one to one. The connecting component 13 connects the first limiting part 112 and the first step part 122 through the through holes 114 and the connecting holes 124 respectively, and connects the second limiting part 113 and the second step part 123. This is equivalent to fixing the slewing bearing 11 and the guide cantilever 12 from the top and bottom of the slewing bearing 11 respectively through the connecting members, thereby improving the fixing stability.

[0064] Furthermore, the through hole 114 on the first limiting part 112 and the through hole 114 on the second limiting part 113 are misaligned, so that the fixed positions of the first step part 122 and the first limiting part 112 and the second step part 123 and the second limiting part 113 are misaligned. This can not only improve the tightness of the slewing bearing 11 and the guide cantilever 12, but also reduce the number of through holes 114 and connecting holes 124, so as to ensure the strength of the first limiting part 112, the second limiting part 113, the first step part 122 and the second step part 123.

[0065] It should be noted that the interference fit between the first step portion 122 and the mating groove 111, and the interference fit between the second limiting portion 113 and the insertion groove 125, not only serve a fixing function, but also a positioning function. That is, simply inserting the step portion into the mating groove 111 and the limiting portion into the insertion groove 125 will automatically complete the alignment of the through hole 114 and the connecting hole 124, facilitating the connection between the slewing bearing 11 and the guide cantilever 12.

[0066] In some embodiments, the connecting assembly 13 includes a plurality of connectors, each connector being threaded into a pair of aligned through holes 114 and connecting holes 124, so that in addition to fixing the guide cantilever 12 and the slewing bearing 11, the connectors can also transmit lateral excitation and share lateral shear force.

[0067] In some embodiments, see Figure 8 and Figure 9 The insertion part 121 has multiple connecting holes 124. The slewing bearing 11 has multiple through holes 114 communicating with the mating groove 111. The connecting holes 124 and the through holes 114 are aligned one-to-one, and the connecting assembly 13 fixes the insertion part 121 in the mating groove 111 through the through holes 114 and the connecting holes 124. In this embodiment, the insertion part 121 is a single piece, without the first stepped part 122 and the second stepped part 123 of the aforementioned embodiment, and without the insertion groove 125. The insertion part 121 is directly inserted into the mating groove 111, and the movement of the insertion part 121 is restricted by the inner wall of the mating groove 111, thereby achieving the effect of directly transmitting part of the lateral excitation and vertical excitation to the slewing bearing 11 through the insertion part 121. Preferably, the insertion part 121 and the mating groove 111 are interference-fitted to ensure that the side wall of the insertion part 121 and the mating groove 111 always remain in contact, so as to limit the guide cantilever 12 from sliding within the mating groove 111.

[0068] In some embodiments, see Figure 9 The connecting assembly 13 includes a plurality of quick-release members 131. Each quick-release member 131 is inserted into a pair of aligned through holes 114 and connecting holes 124 to restrict the movement of the insertion part 121 within the mating groove 111. The quick-release members 131 enable quick assembly and disassembly of the connection between the guide cantilever 12 and the slewing bearing 11.

[0069] It should be noted that the through hole 114 can be provided on both the top and bottom surfaces of the slewing bearing 11. The through holes 114 on the top and bottom surfaces can be aligned or misaligned, without limitation. Correspondingly, the top and bottom surfaces of the insertion part 121 can both be provided with connecting holes 124, or the connecting holes 124 in the insertion part 121 can directly penetrate the through holes 114 on both the top and bottom surfaces of the insertion part 121, without limitation. Part of the connector passes through the through hole 114 on the top surface and is inserted into the connecting hole 124 of the insertion part 121, while another part of the connector passes through the through hole 114 on the bottom surface of the slewing bearing 11 and is inserted into the connecting hole 124 of the insertion part 121, so as to achieve a fixed connection between the slewing bearing 11 and the guide cantilever 12.

[0070] In some embodiments, see Figures 9 to 11 The quick-release component 131 includes a limiting block 132, a connecting rod 133, an elastic element 134, and an end cap 135. The limiting block 132 is detachably connected to the connecting rod 133. The elastic element 134 is sleeved on the connecting rod 133, and its two ends are respectively connected to the limiting block 132 and the end cap 135. The end of the connecting rod 133 away from the limiting block 132 passes through the end cap 135. The end cap 135 is detachably fixed to the slewing bearing 11 to block the through hole 114. The side of the limiting block 132 away from the elastic element 134 is used to insert into the aligned through hole 114 and connecting hole 124 to fix the insertion part 121 into the mating groove 111. In this embodiment, the connecting rod 133 and the limiting block 132 are threadedly connected.

[0071] The process of installing the plug-in part 121 onto the slewing bearing 11 is as follows: First, the plug-in part 121 is inserted into the mating groove 111, at which point the through hole 114 and the connecting hole 124 are automatically aligned. Then, the quick-release piece 131 is inserted into the through hole 114, with the limiting block 132 located within the through hole 114. A pressing force is applied to the end cap 135, causing the end cap 135 to drive the limiting block 132 to move from the through hole 114 toward the connecting hole 124, so that at least a portion of the limiting block 132 is inserted into the connecting hole 124. Next, the end cap 135 is fixed to the slewing bearing 11 using bolts. At this time, the elastic element 134 is compressed by the pressure of the end cap 135 and the limiting block 132, and the reaction force that restores its original shape acts on the limiting block 132, ensuring that the limiting block 132 remains within the connecting hole 124. Additionally, at this time, the end of the connecting rod 133 away from the limiting block 132 passes through the end cover 135, and a quick-release hole 136 is provided in the part of the connecting rod 133 that passes through the end cover 135 to facilitate subsequent disassembly.

[0072] The process of disassembling the plug-in part 121 from the slewing bearing 11 is as follows: Using a disassembly tool, insert the connecting end of the disassembly tool into the quick-release hole 136, and then apply a pulling force to the connecting rod 133 in a direction away from the limiting block 132. Pull the connecting rod 133 and the limiting block 132 away from the connecting hole 124 so that the limiting block 132 exits the connecting hole 124. At this time, the plug-in part 121 can be pulled out from the mating groove 111. After the plug-in part 121 is pulled out of the mating groove 111, release the pulling force, remove the disassembly tool from the quick-release hole 136, and under the action of the elastic element 134, a part of the limiting block 132 is pushed into the mating groove 111. Except when the quick-release part 131 is installed for the first time, which requires bolts to fix the end cover 135 to the slewing bearing 11, subsequent disassembly and assembly of the guide cantilever 12 and the slewing bearing 11 do not require disassembly of bolts, etc. Only by using the disassembly tool to pull the connecting rod 133 and release the connecting rod 133 can the guide cantilever 12 and the slewing bearing 11 be fixedly connected.

[0073] In summary, the transmission paths of the guide cantilever assembly 1 used in this application for the vertical and lateral excitations of the rail vehicle during straight-line and turning travel are as follows:

[0074] When the rail vehicle travels in a straight line, a portion of the lateral and vertical excitations are transmitted to the axle 4 sequentially through the guide wheel 3, guide cantilever 12, connecting assembly 13, and slewing bearing 11. The other portion is also transmitted to the axle 4 sequentially through the guide wheel 3, guide cantilever 12, and slewing bearing 11, thus allowing the lateral and vertical excitations to be distributed and reducing the burden on the connecting assembly 13. It should be noted that when the rail vehicle is traveling in a straight line, the steering tie rod 21 in the steering mechanism does not transmit lateral excitations.

[0075] When the rail vehicle turns, the guide wheel 3 receives lateral and vertical excitations. Part of the vertical excitation is transmitted to the axle 4 sequentially through the guide wheel 3, guide cantilever 12, connecting assembly 13, and slewing bearing 11. Similarly, part of the lateral excitation is transmitted to the axle 4 sequentially through the guide wheel 3, guide cantilever 12, and slewing bearing 11. A further portion of the lateral excitation is transmitted to the axle 4 sequentially through the guide wheel 3, guide cantilever 12, and slewing bearing 11, and a third portion is transmitted to the axle 4 sequentially through the guide wheel 3, guide cantilever 12, and steering tie rod 21, thus enabling the vehicle to turn.

[0076] During the operation of the rail vehicle, the steering mechanism effectively reduces the shear force on the connecting assembly 13 by adding a transmission path of guide wheel 3, guide cantilever 12 and slewing bearing 11, which is beneficial to improving the service life of the connecting assembly 13.

[0077] Embodiments of this application provide a rail vehicle including an axle 4 and a steering mechanism as described in the foregoing embodiments. The steering mechanism is connected to the axle 4 and transmits excitation to the axle 4. This rail vehicle has all the beneficial effects of the aforementioned steering mechanism, which will not be elaborated further in this disclosure.

[0078] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0079] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0080] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0081] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A guide cantilever assembly, characterized in that, include: Slewing bearing; Guide cantilever, used to connect guide wheels; The slewing bearing is provided with a docking groove, and the guide cantilever is inserted into the docking groove to restrict the movement of the guide cantilever within the docking groove along the circumferential direction of the slewing bearing.

2. The guide cantilever assembly according to claim 1, characterized in that, The mating groove is disposed on the circumferential surface of the slewing bearing.

3. The guide cantilever assembly according to claim 1, characterized in that, The guide cantilever assembly includes two guide cantilever arms, and the slewing bearing is provided with two docking slots. The two docking slots are spaced apart along the circumference of the slewing bearing, and the two guide cantilever arms are respectively inserted into the two docking slots.

4. The guide cantilever assembly according to claim 3, characterized in that, The two docking slots are arranged in a centrally symmetrical manner with the central axis of the slewing bearing as the axis of symmetry.

5. The guide cantilever assembly according to claim 1, characterized in that, The guide cantilever is interference-fitted with the docking groove.

6. The guide cantilever assembly according to claim 1, characterized in that, The guide cantilever includes a plug-in portion that is plugged into the mating groove; the guide cantilever assembly also includes a connecting component for fixing the guide cantilever and the slewing bearing together.

7. The guide cantilever assembly according to claim 6, characterized in that, The slewing bearing includes a first limiting part and a second limiting part disposed opposite to each other, the first limiting part and the second limiting part defining the mating groove, and at least a portion of the insertion part being inserted into the mating groove.

8. The guide cantilever assembly according to claim 7, characterized in that, The insertion portion includes a first stepped portion and a second stepped portion, which are arranged opposite to each other to define an insertion groove. The first stepped portion is inserted into the mating groove, and the second limiting portion is inserted into the insertion groove.

9. The guide cantilever assembly according to claim 8, characterized in that, The first stepped portion is interference-fitted with the mating groove, and the second limiting portion is interference-fitted with the insertion groove.

10. The guide cantilever assembly according to claim 8, characterized in that, Both the first limiting part and the second limiting part have multiple through holes communicating with the docking groove, and both the first step part and the second step part have multiple connecting holes. The through holes and the connecting holes are aligned one-to-one. The connecting component connects the first limiting part and the first step part through the through holes and the connecting holes, and connects the second limiting part and the second step part.

11. The guide cantilever assembly according to claim 10, characterized in that, The through hole on the first limiting part and the through hole on the second limiting part are offset from each other.

12. The guide cantilever assembly according to claim 10, characterized in that, The connection assembly includes multiple connectors, each of which is threaded into a pair of aligned through holes and connection holes.

13. The guide cantilever assembly according to claim 7, characterized in that, The plug-in part has multiple connecting holes, and the slewing bearing has multiple through holes communicating with the docking groove. The connecting holes and the through holes are aligned one-to-one. The connecting assembly fixes the plug-in part in the docking groove through the through holes and the connecting holes.

14. The guide cantilever assembly according to claim 13, characterized in that, The connection assembly includes multiple quick-release components, each of which is inserted into a pair of aligned through holes and connection holes to restrict the movement of the insertion part within the mating groove.

15. The guide cantilever assembly according to claim 14, characterized in that, The quick-release component includes a limiting block, a connecting rod, an elastic element, and an end cap. The limiting block is detachably connected to the connecting rod. The elastic element is sleeved on the connecting rod, and its two ends are respectively connected to the limiting block and the end cap. The end of the connecting rod away from the limiting block passes through the end cap. The end cap is detachably fixed to the slewing bearing to block the through hole. The side of the limiting block away from the elastic element is used to insert into the aligned through hole and connecting hole to fix the insertion part into the mating groove.

16. The guide cantilever assembly according to claim 15, characterized in that, The portion of the connecting rod that passes through the end cap has a quick-release hole for connecting a disassembly fixture, so that the limiting block can be disengaged from the connecting hole under the action of the disassembly fixture.

17. A steering mechanism, characterized in that, include: The guide cantilever assembly as described in any one of claims 1 to 16; A steering assembly, mounted on the guide cantilever, is used to transmit steering excitation to the axle of the rail vehicle; The guide wheel is connected to the end of the guide cantilever away from the slewing bearing and is used to guide the rail vehicle in conjunction with the track.

18. A rail vehicle, characterized in that, It includes an axle and a steering mechanism as described in claim 17, the steering mechanism being connected to the axle and transmitting excitation to the axle.

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