Buffer device and vehicle

Abstract

The application belongs to the technical field of rail vehicles, and provides a buffer device and a vehicle. The buffer device comprises a traction rod and a buffer, and can be used for a vehicle. The buffer can be connected with the traction rod; an anti-rotation piece is installed on the traction rod or the buffer, is located at the matching position of the traction rod and the buffer, and is provided with a groove structure along the outer periphery of the anti-rotation piece; the anti-rotation problem between the traction rod and the buffer is solved by an anti-rotation block. If the anti-rotation piece is installed on the traction rod, the anti-rotation block is installed on the buffer, and the anti-rotation block is inserted into the groove structure; or if the anti-rotation piece is installed on the buffer, the anti-rotation block is installed on the traction rod, and the anti-rotation block is inserted into the groove structure. By increasing the anti-rotation piece and the anti-rotation block between the traction rod and the buffer, the relative rotation between the buffer and the traction rod is limited, the anti-rotation problem of the buffer device is solved by a simple matching structure, and the reliability of the buffer device is improved.

Description

Technical Field

[0001] This application relates to the field of rail transit technology, specifically to a buffer device and a vehicle. Background Technology

[0002] As a key intermediate connecting component of the coupler system, the buffer device is hinged to the installation and suspension system at one end and connected to the coupling system through a snap ring at the other end. Its main function is to transmit the train's traction force and mitigate the impact load generated during operation.

[0003] When a train is subjected to various working conditions such as non-axial forces, curved tracks, and unstable tracks, the buffer housing and buffer unit may rotate relative to each other.

[0004] To ensure the proper functioning of the buffer energy absorption device, an anti-rotation structure is incorporated into the device to limit the tendency for the traction rod and the buffer to rotate relative to each other, thus preventing coupler malfunctions caused by rotation. However, under the demands of high-frequency, high-torque operating conditions, the anti-rotation structure in existing buffer energy absorption devices still has some technical problems, which have become key bottlenecks restricting the reliability of high-speed train operation. Summary of the Invention

[0005] The purpose of this application is to solve one of the above-mentioned technical problems and to provide a buffer device.

[0006] To achieve the above objectives, the first aspect of this application provides a buffer device, the technical solution of which is: A buffer device, comprising: Tow bar: Buffer: capable of connecting to a traction rod; Anti-rotation component: installed on the traction rod or the buffer, located at the mating point of the traction rod and the buffer, and has a groove structure along the outer periphery of the anti-rotation component; Anti-spinning block; If the anti-rotation component is installed on the traction rod, then the anti-rotation block is installed on the buffer, and the anti-rotation block is inserted into the slot structure; or, If the anti-rotation component is installed on the buffer, then the anti-rotation block is installed on the traction rod, and the anti-rotation block is inserted into the slot structure.

[0007] In this embodiment, by adding an anti-rotation component and an anti-rotation block between the traction rod and the buffer, the relative rotation between the buffer and the traction rod is limited. Through a simple mating structure, the problem of anti-rotation of the buffer device is solved, and the reliability of the buffer device is improved.

[0008] In conjunction with the first aspect, in one possible implementation of the first aspect, the traction rod and the mating mounting end of the buffer form an axial mounting groove; The buffer includes a traction rod mating section, which includes a first mating section and a second mating section, wherein the first mating section has a smaller radial dimension than the second mating section; The first mating section can be inserted into the axial mounting groove, and the anti-rotation component is installed at the transition end face of the first mating section and the second mating section.

[0009] In this embodiment, to improve the fit between the anti-rotation component and the anti-rotation block, a specific installation position for the anti-rotation component and the anti-rotation block is proposed. The anti-rotation component and the anti-rotation block are installed at the transition end face, a position that more closely matches the fit between the traction rod and the buffer, thus solving the anti-rotation problem between the two within a minimal operational space.

[0010] In conjunction with the first aspect, in one possible implementation of the first aspect, the anti-rotation component is provided with a first fixing hole, and a second fixing hole is provided at the transition end face of the first mating section and the second mating section. The positions of the first fixing hole and the second fixing hole are matched, and the fixing component passes through the first fixing hole and the second fixing hole to fix the anti-rotation component and the buffer.

[0011] In this embodiment, the anti-rotation component is fixed at the transition surface by the cooperation structure of the first fixing hole, the second fixing hole and the fixing member, which can further solve the problem of anti-rotation between the anti-rotation component and the buffer.

[0012] In conjunction with the first aspect, in one possible implementation of the first aspect, the transition end face of the first mating segment and the second mating segment is an annular end face, the anti-rotation member is annular, and the shape of the anti-rotation member matches the shape of the transition end face so that the anti-rotation member can fit against the transition end face.

[0013] In this embodiment, a ring-shaped anti-rotation component structure is further proposed, the shape of which can be adapted to the buffer structure commonly found in the prior art.

[0014] In conjunction with the first aspect, in one possible implementation of the first aspect, the inner wall of the axial mounting groove is provided with an internal thread, the first mating section is provided with an external thread, and the buffer is threadedly connected to the traction rod.

[0015] In this embodiment, a threaded connection between the traction rod and the buffer is further proposed. The threaded structure can achieve stable fixation, and the anti-rotation structure can solve the problem of loosening of the threaded connection.

[0016] In conjunction with the first aspect, in one possible implementation of the first aspect, an anti-rotation block mounting groove is provided on the side wall of the traction rod at the groove opening of the mounting groove of the traction rod, and the anti-rotation block is installed in the anti-rotation block mounting groove by a fastener.

[0017] This application proposes a detachable mounting structure for the anti-rotation block, facilitating its replacement. Furthermore, positioning the anti-rotation block at the opening of the mounting groove, closer to the buffer, enhances the compactness of the anti-rotation structure.

[0018] In conjunction with the first aspect, in one possible implementation of the first aspect, the anti-rotation component is provided with multiple slot structures, and the buffer device includes multiple anti-rotation blocks, each of the anti-rotation blocks corresponding to one of the slot structures.

[0019] In this embodiment, the reliability of the anti-rotation function can be improved by the cooperative structure of multiple anti-rotation grooves and anti-rotation blocks.

[0020] In conjunction with the first aspect, in one possible implementation of the first aspect, the anti-rotation component is provided with two groove structures arranged symmetrically.

[0021] In this embodiment, the reliability of the anti-rotation function can be guaranteed by using two symmetrically arranged slot structures with a smaller number of anti-rotation blocks.

[0022] In conjunction with the first aspect, in one possible implementation of the first aspect, the buffer device further includes a buffer housing, one end of which is an open end; the buffer includes a buffer unit and a traction rod mating section, the traction rod mating section being connected to the buffer unit and capable of driving the buffer unit to move along the buffer housing; the buffer unit is located inside the buffer housing, and an end nut is installed at the mating point between the traction rod mating section and the open end.

[0023] In this embodiment of the application, the open end of the buffer housing can be closed by setting an end nut.

[0024] A second aspect of this application provides a vehicle characterized in that it includes the buffer device described in the first aspect of this application.

[0025] Applying the buffer device provided in the first aspect of this application to rail vehicles can improve the reliability of the vehicle buffer device.

[0026] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application, it can be implemented according to the contents of the specification. In order to make the above and other objects, features and advantages of this application more apparent, specific embodiments of this application are given below. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of a buffer device in the prior art.

[0028] Figure 2 This is a cross-sectional structural diagram of a buffer device in the prior art.

[0029] Figure 3 This is a schematic diagram of the traction rod structure in the prior art.

[0030] Figure 4 This is a schematic diagram of the structure of the buffer device traction rod and buffer part in the embodiment of this application.

[0031] Figure 5 This is a cross-sectional view of the traction rod and buffer portion of the buffer device in an embodiment of this application.

[0032] Figure 6 This is a schematic diagram of the overall structure of the buffer device in an embodiment of this application.

[0033] Figure 7 Examples of this application Figure 6 A partially enlarged structural diagram of the central defense component.

[0034] Figure 8 This application presents a schematic diagram of the buffer structure in an embodiment.

[0035] Figure 9 This is a schematic diagram of the anti-rotation component structure in an embodiment of this application.

[0036] Figure 10 This is a schematic diagram of the traction rod structure according to an embodiment of this application.

[0037] Figure 11 Examples of this application Figure 10 Enlarged view of a portion of the mounting groove.

[0038] Figure 12 This is a schematic diagram of the anti-rotation block structure in an embodiment of this application.

[0039] 1. Buffer; 101. Snap ring connection end; 102. Traction rod connection end; 103. First mating section; 104. Second mating section; 105. Transition end face; 106. Second fixing hole. 2. Traction rod, 201. Snap ring connection end, 202. Buffer connection end, 203. Anti-rotation block mounting slot; 3. Cover plate; 4. Cylindrical pin; 5. Bolts; 6. Anti-loosening board; 7. Anti-rotation block, 701. Fixing hole; 8. Anti-rotation component, 801. Groove structure, 802. First fixing hole; 9. End nut; 10. Fasteners. Detailed Implementation

[0040] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0041] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not 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 application. In this application, unless otherwise expressly 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, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature. In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0042] To ensure the proper functioning of the coupler and address the issue of relative rotation between the buffer housing and the buffer unit, some buffer devices are equipped with anti-rotation structures. This key external anti-rotation structure effectively limits the relative rotational tendency between the buffer housing and the buffer, thereby avoiding potential malfunctions caused by rotation.

[0043] like Figures 1 to 3 This is a schematic diagram of the anti-rotation structure of a buffer device in the prior art.

[0044] The buffer device includes a traction rod 2 and a buffer 1. The buffer includes a retaining ring connection end 101 and a traction rod connection end 102, wherein the retaining ring connection end 101 can be connected to the vehicle body, and the traction rod connection end 102 is partially inserted into the traction rod 2.

[0045] To address the issue of preventing rotation between the buffer 1 and the traction rod 2, a slot and hole are drilled at the mating position of the traction rod 2 and the buffer. After the buffer 1 is inserted into the traction rod 2, a cylindrical pin 4 is inserted into the hole, passing through both the traction rod 2 and the buffer to secure them. Subsequently, a cover plate 3 is installed at the slotted position and secured with fixing bolts 5, thus concealing the slot. An anti-loosening plate 6 is installed between the bolts 5 and the cover plate 3; tapping and tightening the cover plate 5 prevents loosening. Alternatively, existing buffer energy-absorbing devices use a drill to break the threads and install cylindrical pins 4 to limit the tendency for rotation between the buffer 1 and the traction rod 2, thus preventing rotation and loosening between them.

[0046] The existing anti-rotation structures have the following structural defects: 1. Insufficient strength of the traction rod structure: The traction rod 2 is usually a cylindrical structure. To achieve the anti-rotation function, a large rectangular groove needs to be machined, which weakens the effective thickness of the load-bearing section and reduces its resistance to longitudinal loads; 2. Low reliability of threaded connection: After the buffer 1 and the traction rod 2 are connected by threads, a drilled pin hole is used to insert a cylindrical pin 4 for anti-rotation. This method damages the threaded structure, weakens the connection reliability, and makes disassembly and maintenance difficult; 3. Poor reusability: The threaded connection between the buffer 1 and the traction rod 2 requires torque tightening. The existing assembly process cannot guarantee that the torque values ​​are completely consistent in two applications. Fluctuations in the thread tightening torque cause the drilled hole position to shift. After disassembly and reassembly, the hole position may overlap during secondary drilling, which greatly reduces the anti-rotation effect. At the same time, the scrap rate of components due to drilling problems increases, increasing maintenance costs.

[0047] To address the above problems, this application proposes a buffer device that improves the anti-rotation fit structure between the traction rod and the buffer.

[0048] refer to Figures 4 to 6 The tow bar 2 is generally cylindrical, including a snap ring connection end 201 and a buffer connection end 202. The snap ring connection end 201 can be connected to the coupler, and the buffer connection end 202 can be connected to the buffer 1.

[0049] The buffer 1 includes a retaining ring connection end 101 and a traction rod connection end 102, wherein the retaining ring connection end 101 can be connected to the vehicle body, and the traction rod connection end 102 can be connected to the traction rod 2.

[0050] For example, in order to solve the installation problem between the traction rod 2 and the buffer 1, the cylindrical structure of the mating installation end of the traction rod 2 and the buffer 1 forms an axial installation groove; the inner wall of the axial installation groove is provided with an internal thread, the buffer has an external thread, and the traction rod 2 and the buffer 1 are threadedly connected.

[0051] In some embodiments of this application, the buffer device further includes a buffer housing 1, one end of which is an open end; the buffer 1 includes a buffer unit and a traction rod 2 mating section, the traction rod 2 mating section being connected to the buffer unit and capable of driving the buffer unit to move along the buffer housing 1; the buffer unit is located inside the buffer housing 1, and an end nut 9 is installed at the mating point between the traction rod 2 mating section and the open end. By setting the end nut 9, the open end of the buffer housing 1 can be closed.

[0052] The buffer device provided in this application embodiment also includes an anti-rotation component 8, which is installed on the traction rod 2 or the buffer 1 and located at the mating point between the traction rod 2 and the buffer 1. A groove structure 801 is provided along the outer periphery of the anti-rotation component 8. Anti-rotation block 7; If the anti-rotation component 8 is installed on the traction rod 2, then the anti-rotation block 7 is installed on the buffer 1, and the anti-rotation block 7 is inserted into the slot structure 801; or, If the anti-rotation component 8 is installed on the buffer 1, then the anti-rotation block 7 is installed on the traction rod 2, and the anti-rotation block 7 is inserted into the slot structure 801.

[0053] This embodiment of the application solves the problem of preventing rotation between the traction rod 2 and the buffer 1 by cooperating with the anti-rotation block 7 and the anti-rotation component 8. When the anti-rotation block 7 is inserted into the slot structure 801, the movement of the anti-rotation block 7 is restricted by the slot structure 801, thereby preventing relative rotation between the traction rod 2 and the buffer 1.

[0054] This application provides two installation positions for the anti-rotation block 7 and the anti-rotation component 8. One of them is installed on the traction rod 2 and the other is installed on the buffer 1. Both can limit the relative rotation between the two.

[0055] In some embodiments of this application, the traction rod connection end of the buffer 1 can also be defined as the traction rod mating section. The traction rod mating section includes a first mating section 103 and a second mating section 104. The first mating section 103 has a smaller radial dimension than the second mating section 104. The first mating section 103 can be inserted into the axial mounting groove, and the anti-rotation component 8 is installed at the transition end face 105 of the first mating section 103 and the second mating section 104.

[0056] In order to achieve the threaded connection between the buffer 1 and the traction rod 2, the first mating section 103 is provided with external threads. The first mating section 103 is inserted into the axial mounting groove, and the buffer 1 and the traction rod 2 are threadedly connected.

[0057] It should be understood that the first mating section 103 and the second mating section 104 are two rod-shaped structures with different diameters. Since the traction rod 2 is usually cylindrical, the first mating section 103 and the second mating section 104 are preferably cylindrical rod-shaped structures. The second mating section 104 has a larger diameter and can be confined to the outside of the port of the traction rod 2. The diameter of the first mating section 103 matches the diameter of the axial mounting groove and can be inserted into the axial mounting groove.

[0058] refer to Figure 8 It should be understood that the transition end face 105 of the first mating section 103 and the second mating section 104 refers to the surface of the second mating section 104 facing the traction rod 2. If the first mating section 103 and the second mating section 104 are cylindrical rods, then the transition end face 105 is an annular surface. When the first mating section 103 is fully inserted into the traction rod 2, the transition end face 105 fits against the traction rod 2. Installing the anti-rotation component 8 on the transition end face ensures that the anti-rotation problem between the two is solved within a minimal effective space, improving the compactness of the anti-rotation structure.

[0059] Furthermore, if the anti-rotation component 8 is installed on the buffer 1, a fixing structure for the anti-rotation component 8 on the buffer 1 is also proposed. The anti-rotation component 8 is provided with a first fixing hole 802, and a second fixing hole 106 is provided at the transition end face of the first mating section 103 and the second mating section 104. The positions of the first fixing hole 802 and the second fixing hole 106 are matched, as shown in the reference. Figure 7 The fastener 10 passes through the first fixing hole 802 and the second fixing hole 106 to secure the anti-rotation component 8 and the buffer 1. The fastener 10 is preferably a cylindrical pin for easy assembly and disassembly. The number of first fixing holes 802 can be more than the number of second fixing holes 106; for example, the second fixing holes 106 may have four, while the first fixing holes 802 may have two. The extra first fixing holes 802 are used for replacement during maintenance.

[0060] In this embodiment, the anti-rotation component 8 is fixed at the transition surface by the cooperation structure of the first fixing hole 802, the second fixing hole and the fixing member, which can further solve the problem of anti-rotation between the anti-rotation component and the buffer 1.

[0061] In some embodiments of this application, the transition end face of the first mating section 103 and the second mating section 104 is an annular end face, the anti-rotation member 8 is annular, the shape of the anti-rotation member 8 matches the shape of the transition end face 105, and can be fitted onto the buffer 1 through the first mating section 103, while ensuring that the anti-rotation member 8 fits the transition end face 105.

[0062] refer to Figures 10 to 12 In some embodiments of this application, an anti-rotation block mounting groove 203 is provided on the side wall of the traction rod 2 at the opening of the mounting groove of the traction rod 2. The anti-rotation block 7 is installed in the anti-rotation block mounting groove 203 by a fastener. The anti-rotation block 7 adopts a detachable mounting structure, which facilitates the replacement of the anti-rotation block. Furthermore, placing the anti-rotation block 7 at the opening of the mounting groove is closer to the buffer 1, which is more conducive to the compactness of the anti-rotation structure. For example, the anti-rotation block mounting groove 203 can be a rectangular groove, and the anti-rotation block 7 can be a rectangular block with a fastener hole 701. The size of the anti-rotation block 7 can be slightly larger than the anti-rotation block mounting groove 203. After installation, the anti-rotation block 7 extends to the outside of the end of the traction rod 2 and is snapped into the groove structure 801.

[0063] To improve the reliability of the anti-rotation function, the anti-rotation component 8 is provided with multiple slot structures 801, and the buffer device includes multiple anti-rotation blocks 7, each corresponding to one slot structure. For example, the anti-rotation component 8 is provided with two slot structures 801, arranged symmetrically. When the anti-rotation component 8 adopts a ring structure, the two slot structures 801 are symmetrically distributed at 180 degrees. By using two symmetrically arranged slot structures 801, the reliability of the anti-rotation function can be guaranteed with a smaller number of anti-rotation blocks.

[0064] The second aspect of this application provides a vehicle characterized in that it includes the buffer device provided in the first aspect of this application.

[0065] Applying the buffer device provided in the first aspect of this application to rail vehicles can improve the reliability of the vehicle buffer device.

[0066] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A buffer device, characterized in that, include: Tow bar: Buffer: capable of connecting to a traction rod; Anti-rotation component: installed on the traction rod or the buffer, located at the mating point of the traction rod and the buffer, and has a groove structure along the outer periphery of the anti-rotation component; Anti-spinning block; If the anti-rotation component is installed on the traction rod, then the anti-rotation block is installed on the buffer, and the anti-rotation block is inserted into the slot structure; or, If the anti-rotation component is installed on the buffer, then the anti-rotation block is installed on the traction rod, and the anti-rotation block is inserted into the slot structure.

2. The buffer device as described in claim 1, characterized in that, The traction rod and the buffer's mating mounting end form an axial mounting groove; The buffer includes a traction rod mating section, which includes a first mating section and a second mating section, wherein the first mating section has a smaller radial dimension than the second mating section; The first mating section can be inserted into the axial mounting groove, and the anti-rotation component is installed at the transition end face of the first mating section and the second mating section.

3. The buffer device as described in claim 2, characterized in that, The anti-rotation component is provided with a first fixing hole, and a second fixing hole is provided at the transition end face of the first mating section and the second mating section. The positions of the first fixing hole and the second fixing hole are matched, and the fixing component passes through the first fixing hole and the second fixing hole to fix the anti-rotation component and the buffer.

4. The buffer device as described in claim 2 or 3, characterized in that, The transition end face of the first mating section and the second mating section is an annular end face, and the anti-rotation component is annular. The shape of the anti-rotation component matches the shape of the transition end face so that the anti-rotation component can fit the transition end face.

5. The buffer device as described in claim 2, characterized in that, The inner wall of the axial mounting groove is provided with internal threads, the first mating section is provided with external threads, and the buffer is threadedly connected to the traction rod.

6. The buffer device as described in claim 2 or 3, characterized in that, At the opening of the mounting groove of the traction rod, an anti-rotation block mounting groove is provided on the side wall of the traction rod, and the anti-rotation block is installed in the anti-rotation block mounting groove by a fixing member.

7. The buffer device as claimed in claim 1, characterized in that, The anti-rotation component is provided with multiple slot structures, and the buffer device includes multiple anti-rotation blocks, each of which corresponds to one of the slot structures.

8. The buffer device as described in claim 7, characterized in that, The anti-rotation component has two groove structures arranged symmetrically.

9. The buffer device as claimed in claim 1, characterized in that, The buffer device further includes a buffer housing, one end of which is an open end; the buffer includes a buffer unit and a traction rod mating section, the traction rod mating section is connected to the buffer unit and can drive the buffer unit to move along the buffer housing; the buffer unit is located inside the buffer housing, and an end nut is installed at the mating point between the traction rod mating section and the open end.

10. A vehicle, characterized in that, Includes the buffer device as described in any one of claims 1 to 9.

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