Noise reduction slewing mechanism of hook buffer device

Abstract

The utility model relates to a noise reduction slewing mechanism of a hook buffer device and a vehicle, and belongs to the technical field of rail transit. A first mounting hole is formed in the mounting seat; a second mounting hole is formed in the hook buffer device, and the second mounting hole can be opposite to the first mounting hole; the coupler yoke pin penetrates through the first mounting hole and the second mounting hole so as to connect the mounting seat and the coupler buffer device; the cover plate is positioned at one end of the coupler yoke pin in the axial direction and is fixedly connected with the mounting seat or the coupler yoke pin; wherein an elastic element is mounted between the cover plate and the coupler yoke pin or the mounting seat. In the embodiment of the invention, the novel noise-reducing slewing mechanism structure is designed, and the elastic element is mounted between the cover plate and the coupler yoke pin or the mounting seat, so that the part structure of the slewing mechanism and the connecting and fixing mode between the parts can be changed, the vertical gap between the parts of the slewing mechanism is reduced, and the noise generated by vertical impact vibration is reduced; meanwhile, the coupler can rotate within a certain range of the horizontal plane and the vertical plane, and the requirement that a train normally passes through a curve is met.

Description

Hook and buffer device noise reduction rotary mechanism Technical Field

[0001] This application relates to the field of rail transit technology, and in particular to a noise reduction rotary mechanism for a hook and buffer device. Background Technology

[0002] The coupler slewing mechanism is usually located at the rear end of the coupler. Its main function is to connect and fix the coupler to the car body. While transmitting the longitudinal force of the train, it enables the coupler to rotate within a certain range in the horizontal and vertical planes to meet the requirements for the train to pass through curves normally.

[0003] The structure of the coupler slewing mechanism includes a mounting base, a coupler tail pin, and the coupler itself. Currently, when existing coupler slewing mechanisms are used on rubber-tired monorail trains, significant noise occurs during the relative rotation between the coupler tail pin and the mounting base. Analysis indicates that the noise is primarily caused by vertical clearance in the existing coupler slewing mechanism structure. Furthermore, compared to subway trains, rubber-tired monorail trains exhibit greater vertical and nodding motion. This nodding motion leads to frequent vertical relative movement between the coupler tail pin and the mounting base, causing the coupler components to collide and generate noise.

[0004] To address the abnormal noise issue, the current solution involves reducing the vertical clearance by increasing the thickness of the gasket, specifically by improving the gap between the mounting base, the coupler pin, and the coupler components. This solution can reduce relative vertical movement to some extent. However, the reduced gap between components makes assembly more difficult, resulting in poor manufacturability. Furthermore, with prolonged use, gasket wear can lead to an increase in vertical clearance, causing the abnormal noise to reappear. Summary of the Invention

[0005] This utility model at least partially solves one of the technical problems in the related art, and provides a noise reduction rotary mechanism for a hook and buffer device.

[0006] To achieve the above objectives, in a first aspect, this utility model provides a noise-reducing rotary mechanism for a hook and buffer device, comprising:

[0007] Mounting base: A first mounting hole is formed on the mounting base;

[0008] Hook buffer device: The hook buffer device has a second mounting hole, which is able to be opposite to the first mounting hole;

[0009] Hook tail pin: passes through the first mounting hole and the second mounting hole to connect the mounting base and the hook buffer device;

[0010] Cover plate: located at one end of the hook tail pin in the axial direction;

[0011] Based on the state of the noise reduction and rotation mechanism of the hook buffer device being adapted to the vehicle, if the cover plate is located above the hook tail pin in the axial direction, the cover plate is fixedly connected to the mounting base; if the cover plate is located below the hook tail pin in the axial direction, the cover plate is connected to the hook tail pin.

[0012] In this application embodiment, a solution is proposed to reduce the vertical clearance between rotating components by adding a cover plate at the mounting base or the hook tail pin. Different cover plate configurations are proposed based on the configuration of the rotating mechanism, which can restrict the vertical movement of the rotating mechanism through the connection between the cover plate and the mounting base, or the connection between the cover plate and the hook tail pin.

[0013] In conjunction with the first aspect, in some implementations of the first aspect, the cover plate is fixedly connected to the mounting base, and an elastic element is installed between the cover plate and the hook pin.

[0014] In this embodiment, by adding a cover plate to the upper part of the hook tail pin at the mounting seat and installing an elastic element between the cover plate and the hook tail pin, the structure of the slewing mechanism components and the connection and fixing method between the components can be changed, the vertical clearance between the slewing mechanism components can be reduced, the noise generated by vertical impact vibration can be reduced, the abnormal noise can be eliminated, and at the same time, the coupler can rotate within a certain range in the horizontal and vertical planes to meet the requirements of the train passing through the curve normally.

[0015] In conjunction with the first aspect, in some implementations of the first aspect, a snap-fit ​​structure is formed between the cover plate and the hook tail pin, and the two are snap-fitted together.

[0016] In this embodiment, the snap-fit ​​structure between the cover plate and the hook pin simplifies the assembly process between the hook pin and the cover plate, while ensuring the stability of the mating structure between them, reducing the vertical movement of the slewing device, and ensuring the normal movement of the entire slewing device.

[0017] In conjunction with the first aspect, in some implementations of the first aspect, the snap-fit ​​structure includes:

[0018] The insert block provided on the cover plate, and the insert slot provided on the hook tail pin,

[0019] or,

[0020] An insert block is provided on the hook tail pin, and an insert slot is provided on the cover plate.

[0021] In this embodiment, the snap-fit ​​structure typically includes an insertion slot and an insertion block. This snap-fit ​​structure has advantages such as simple structure, reliable connection, and convenient disassembly, ensuring the normal operation of the entire rotary mechanism.

[0022] In conjunction with the first aspect, in some implementations of the first aspect, a protruding edge is provided along the circumferential edge of the cover plate toward the side that engages with the hook pin, the protruding edge abutting against the mounting base, and the elastic element being located between the protruding edge and the snap-fit ​​mechanism.

[0023] In this embodiment, the protruding edge provides an additional support structure for the connection between the cover plate and the mounting base and the hook pin. It forms a ring-shaped reinforcing rib in the circumferential direction, effectively enhancing the overall rigidity of the cover plate. During train operation, especially when passing through curves or experiencing impacts, the cover plate is subjected to forces from various directions. The presence of the protruding edge effectively disperses these forces and reduces vertical relative motion.

[0024] In conjunction with the first aspect, in some implementations of the first aspect, the elastic element is disposed on the periphery of the snap-fit ​​structure, located on the inner side of the circumferential edge of the cover plate.

[0025] In this embodiment, the elastic element is placed on the periphery of the snap-fit ​​structure, inside the circumferential edge of the cover plate. This arrangement allows the elastic element to fully fill the limited space between the cover plate and the hook pin, thereby achieving effective installation of the elastic element without increasing the overall size.

[0026] In conjunction with the first aspect, in some implementations of the first aspect, a rubber bearing is provided in the second mounting hole, the bearing hole of the rubber bearing is opposite to the second mounting hole, and the hook tail pin passes through the first mounting hole and the bearing hole to connect the mounting base and the hook buffer device.

[0027] In this embodiment, the rubber bearing is a component with high elasticity and wear resistance, and its main function is to provide a flexible connection. In this application, the rubber bearing is installed in the second mounting hole of the hook buffer device. This design allows the hook tail pin to fit tightly with the rubber bearing when passing through the first mounting hole and the bearing hole, thereby achieving a stable connection between the mounting base and the hook buffer device.

[0028] In conjunction with the first aspect, some implementations of the first aspect further include an anti-loosening plate disposed above the cover plate, wherein a fastener passes through the anti-loosening plate, the cover plate, and the elastic element to secure the cover plate to the mounting base.

[0029] In this embodiment, the structural design of the slewing mechanism is further optimized, particularly in the fixed connection between the cover plate and the hook pin. An anti-loosening plate is positioned above the cover plate, its main function being to prevent the cover plate from loosening due to vibration during train operation. Through its cooperation with the fasteners, the anti-loosening plate effectively locks the cover plate in place, preventing it from loosening and thus improving the reliability of the connection.

[0030] In conjunction with the first aspect, in some implementations of the first aspect, the rubber bearing includes a rubber sleeve and a bushing located on the inner circumference of the rubber sleeve, the bushing hole of the bushing is opposite to the second mounting hole, and the hook pin passes through the first mounting hole and the bushing hole; both ends of the bushing extend to the outside of the second mounting hole in the height direction; the hook pin is T-shaped and includes a horizontal portion and a vertical portion; a first elastic washer is provided between the first end of the bushing in the height direction and the horizontal portion of the hook pin, and a second elastic washer is provided between the second end of the bushing in the height direction and the mounting seat.

[0031] In this embodiment, the elastic element between the elastic washer, cover plate, and hook pin better mitigates vertical impact. When the washer wears out, the elastic element automatically compensates, preventing vertical gaps between the rotating mechanism components.

[0032] In conjunction with the first aspect, in some implementations of the first aspect, the outer periphery of the hook pin is fitted with an elastic pad.

[0033] In this embodiment, the elastic gasket is fitted around the outer periphery of the hook pin, its main function being to provide a flexible buffer layer. When the hook pin passes through the first and second mounting holes, the elastic gasket can tightly conform to the hook pin and the inner wall of the mounting hole, thereby achieving a more stable connection. This flexible buffer layer can effectively absorb and disperse various forces generated during train operation, reducing the direct transmission of forces and thus improving the stability of the connection.

[0034] In conjunction with the first aspect, in some implementations of the first aspect, the cover plate is located below the hook tail pin in the axial direction, the cover plate has a mating portion with the mounting base, and an elastic element is provided between the mating portion and the mounting base.

[0035] In this embodiment of the application, by adding a cover plate to the lower part of the hook tail pin, the vertical clearance between the components of the slewing mechanism can also be reduced, the noise generated by vertical impact vibration can be reduced, and abnormal noise can be eliminated.

[0036] In conjunction with the first aspect, some implementations of the first aspect also include an anti-loosening plate disposed below the cover plate, with the fastener passing through the anti-loosening plate and the cover plate to secure the cover plate to the hook pin.

[0037] As can be seen from the above technical solutions, additional aspects and advantages of this utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this utility model. Attached Figure Description

[0038] Figure 1 is a schematic diagram of the overall structure of the noise reduction rotary mechanism of the hook buffer device according to Embodiment 1 of the present application;

[0039] Figure 2 is a cross-sectional structural schematic diagram of the noise reduction rotary mechanism of the hook buffer device according to Embodiment 1 of the present application;

[0040] Figure 3 is a schematic diagram of the rubber bearing portion of the noise reduction rotary mechanism of the hook buffer device according to Embodiment 1 of this application;

[0041] Figure 4 is a schematic diagram of the overall structure of the noise reduction rotary mechanism of the hook buffer device according to Embodiment 2 of this application;

[0042] Figure 5 is a schematic diagram of the overall structure of the noise reduction rotary mechanism of the hook buffer device according to Embodiment 2 of this application;

[0043] Figure 6 is a schematic cross-sectional view of the overall structure of the noise reduction rotary mechanism of the hook buffer device according to Embodiment 2 of this application;

[0044] Figure 7 is a schematic cross-sectional view of the overall structure of the noise reduction rotary mechanism of the hook buffer device according to Embodiment 2 of this application;

[0045] In the above figures:

[0046] 1. Mounting base; 101. First mounting hole; 102. Base body; 103. Upper base plate; 104. Lower base plate; 105. Mounting hole;

[0047] 2. Hook tail pin; 201. Insert slot;

[0048] 3. Hook handle, 301, second mounting hole;

[0049] 4. Cover plate; 401. Insert block; 402. Protruding edge;

[0050] 5. Fasteners;

[0051] 6. Elastic elements;

[0052] 7. Rubber bearings; 701. Rubber sleeves; 702. Shaft sleeves;

[0053] 8. First elastic washer;

[0054] 9. Second elastic washer;

[0055] 10. Elastic padding;

[0056] 11. Anti-loosening board. Detailed Implementation

[0057] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "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 are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model 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 utility model.

[0058] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," 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 them; 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0059] In this utility model, unless otherwise explicitly 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.

[0060] In this utility model, 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 utility model. 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.

[0061] The present invention will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0062] The existing hook-and-slow-turn mechanism is known to include a mounting base 1 and a hook tail pin 2. A first mounting hole 101 is made on the mounting base 1, and a second mounting hole 301 is made on the hook shank 3 of the coupler. The first mounting hole 101 and the second mounting hole 301 are opposite each other and are fixed by the hook tail pin 2. The hook tail pin 2 is designed with one wider end, which is engaged outside the first mounting hole 101.

[0063] The technical problems existing in the existing coupler slewing mechanism include: there are vertical gaps between the coupler tail pin 2 and the mounting seat 1, and between the mounting seat 1 and the coupler handle 3. When the train is impacted during operation, friction occurs between the components, generating noise, which will cause wear of the components over time.

[0064] To address the above problems, the first aspect of this application provides a noise-reducing rotary mechanism for a hook and buffer device. Referring to Figures 1 and 2, the noise-reducing rotary mechanism for a hook and buffer device provided in this application includes a mounting base 1, a hook and buffer device, a hook tail pin 3, and a cover plate 4.

[0065] The mounting base 1 has a first mounting hole 101. As shown in FIG1, the mounting base 1 includes a base body 102 and an upper base plate 103 and a lower base plate 104 spaced forward along the base body 102. The gap between the upper base plate 103 and the lower base plate 104 is used to accommodate the hook and buffer device. The first mounting hole 101 is provided opposite to each other on the upper base plate 103 and the lower base plate 104. The base body 103 also has a mounting hole 105 for mounting the mounting base 1 to the vehicle.

[0066] According to the configuration requirements of the vehicle body coupler and buffer device, the coupler and buffer device may include multiple components such as coupler and buffer, which work together to meet the functional requirements of vehicle connection and buffering. In this embodiment, the coupler handle 3 is partially installed in the space between the upper seat plate 103 and the lower seat plate 104. A second mounting hole 301 is formed on the coupler handle 3, which can be aligned with the first mounting holes 101 on the upper seat plate 103 and the lower seat plate 104.

[0067] The hook pin 2 passes through the first mounting hole 101 and the second mounting hole 301 to connect the mounting base 1 and the hook-and-wind device. To achieve a better match between the radial dimension of the hook pin 2 and the opening size of the first mounting hole 101, a small clearance needs to be maintained between them. This small clearance design effectively improves the stability and reliability of the connection, ensuring that the connection between the mounting base 1 and the hook-and-wind device will not loosen or experience other problems during vehicle operation, and also reduces the relative movement space between the hook pin 2 and the mounting base 1.

[0068] The cover plate 4 is located at one end of the hook tail pin 2 in the axial direction. Based on the state of the noise reduction and rotation mechanism of the hook buffer device being adapted to the vehicle, if the cover plate 4 is installed above the hook tail pin 2 in the axial direction, the cover plate 4 is fixedly connected to the mounting base 1; if the cover plate 4 is installed below the hook tail pin 2 in the axial direction, the cover plate 4 is connected to the hook tail pin 4.

[0069] This application proposes two installation structures for the cover plate 4, which are described in detail below through Embodiment 1 and Embodiment 2, respectively.

[0070] Example 1.

[0071] The cover plate 4 is located at one end of the hook pin 2 in the axial direction, above the hook pin 2, and is fixedly connected to the mounting base 1. Unlike the prior art, this application embodiment adds a cover plate 4. It should be understood that the cover plate 4 and the mounting base 1 can be fixedly connected by a fastener 5. In some embodiments, the cover plate 4 is circular, and its radial dimension is slightly larger than the size of the first mounting hole 101, ensuring that it can completely cover the first mounting hole 101.

[0072] An elastic element 6 is installed between the cover plate 4 and the hook pin 2. The elastic element 6 is preferably a disc spring, but in some embodiments, a rubber pad may also be used. The elastic element 6 further optimizes the performance of the entire device. It can play a role in buffering and shock absorption to a certain extent. When the vehicle is subjected to impact or vibration during operation, the elastic element 6 can effectively absorb and mitigate these impact forces, buffer the vertical movement between components, thereby protecting the mounting base 1, the hook buffer device, and the hook pin 2 from damage, extending the service life of the entire device, and improving the safety and stability of vehicle operation.

[0073] In this embodiment, a novel noise-reducing slewing mechanism structure is designed by adding a cover plate 4 and an elastic element 6. By installing an elastic element between the cover plate 4 and the hook tail pin 2, the structure of the slewing mechanism components and the connection and fixing method between the components can be changed, the vertical gap between the slewing mechanism components can be reduced, the noise generated by vertical impact vibration can be reduced, and abnormal noise can be eliminated. At the same time, the coupler can rotate within a certain range in the horizontal and vertical planes to meet the requirements of the train passing through the curve normally.

[0074] In some embodiments of this application, a snap-fit ​​structure is formed between the cover plate 4 and the hook pin 2, and the two are engaged in a snap-fit ​​fit. It should be noted that this snap-fit ​​structure does not affect the axial relative movement between the cover plate 4 and the hook pin 2.

[0075] In this embodiment of the application, the design of the snap-fit ​​structure between the cover plate 4 and the hook pin 2 can simplify the assembly process between the hook pin 2 and the cover plate 4, while ensuring the stability of the mating structure between the two, reducing the vertical movement of the rotary device, and ensuring the normal movement of the entire rotary device.

[0076] In some embodiments of this application, the snap-fit ​​structure includes an insert block 401 disposed on the cover plate 4 and an insert groove 201 disposed on the hook tail pin 2. In other embodiments of this application, the snap-fit ​​structure includes an insert block disposed on the hook tail pin 2 and an insert groove disposed on the cover plate 4. The structure of the insert block 401 and the insert groove 201 has the advantages of simple structure, reliable connection, and convenient disassembly, ensuring the normal operation of the entire rotary mechanism.

[0077] In some embodiments of this application, a protruding edge 402 is provided along the circumferential edge of the cover plate 4 towards the side that mates with the hook pin 2. The protruding edge 402 abuts against the mounting base 1, and the elastic element 6 is located between the protruding edge 402 and the snap-fit ​​mechanism. It should be understood that the protruding edge 402 is a uniformly protruding ridge around the edge of the cover plate 4. When the cover plate 4 is installed with the mounting base 1 and the hook pin 4, the protruding edge 402 partially fits against the upper end surface of the mounting base 1. Through this structure, the protruding edge 402 provides an additional support structure for the connection between the cover plate 4, the mounting base 1, and the hook pin 2. During train operation, especially when passing through curves or being impacted, the cover plate 4 is subjected to forces in various directions, and the presence of the protruding edge 402 can effectively disperse these forces.

[0078] In some embodiments of this application, the elastic element 6 is disposed on the periphery of the snap-fit ​​structure, located on the inner side of the circumferential edge of the cover plate 4. Referring to FIG2, in this embodiment, the snap-fit ​​structure consists of an insert block 401 disposed on the cover plate 2 and an insert groove 201 disposed on the hook pin 2. When the cover plate 4 and the hook pin 2 are fitted together, a mounting groove structure is formed between the insert block 201 and the protruding edge 402, and the elastic element 6 is disposed in the mounting groove.

[0079] In this embodiment, the elastic element 6 is disposed on the periphery of the snap-fit ​​structure and on the inner side of the circumferential edge of the cover plate 4. This arrangement allows the elastic element to fully fill the limited space between the cover plate 4 and the hook pin 2, and can generate a buffering effect when the two undergo vertical displacement.

[0080] In some embodiments of this application, a rubber bearing 7 is provided in the second mounting hole 301, the bearing hole of the rubber bearing 7 is opposite to the second mounting hole 301, and the hook tail pin 2 passes through the first mounting hole 101 and the bearing hole to connect the mounting base 1 and the hook buffer device.

[0081] In this embodiment, the rubber bearing 7 is a highly elastic component, whose main function is to provide a flexible connection. In this application, the rubber bearing 7 is installed in the second mounting hole 301 of the hook buffer device. This design allows the hook tail pin 2 to fit tightly with the rubber bearing 7 when passing through the first mounting hole 101 and the bearing hole, thereby achieving a stable connection between the mounting base 1 and the hook buffer device.

[0082] In some embodiments of this application, the rubber bearing 7 includes a rubber sleeve 701 and a bushing 702 located on the inner circumference of the rubber sleeve 701. The bushing hole of the bushing 702 is opposite to the second mounting hole 301. The hook pin 2 passes through the first mounting hole 101 and the bushing hole. The two ends of the bushing 702 extend to the outside of the second mounting hole 301 in the height direction. The hook pin 2 is T-shaped and includes a horizontal part and a vertical part. A first elastic washer 8 is provided between the first end of the bushing 702 in the height direction and the horizontal part of the hook pin 2, and a second elastic washer 9 is provided between the second end of the bushing 702 in the height direction and the mounting seat 1.

[0083] It should be understood that in the prior art, the hook pin 2 is T-shaped, with its wider end located outside the first mounting hole 101 of the mounting base 1. In this application, the hook pin 2 is T-shaped, but its wider end passes through the first mounting hole 101 of the mounting base 1, partly located inside the first mounting hole 101 and partly extending to the outside of the first mounting hole 101. The upper part is connected to the cover plate 4 and fits against the inner circumference of the protruding edge 402, while the lower part fits against the upper surface of the bushing 702.

[0084] In this embodiment, an elastic washer is provided at the part where the hook pin 2 fits with the component, which can better achieve the function of reducing vertical impact motion. When the elastic washer wears out, the elastic element 6 can automatically compensate, so that no vertical gap is generated between the components of the rotating mechanism.

[0085] In some embodiments of this application, an elastic gasket 10 is fitted inside the hole of the rubber bearing 7 bushing 702.

[0086] In this embodiment, the elastic gasket 10 is fitted inside the hole of the rubber bearing 7 bushing 702, and its main function is to provide a flexible buffer layer and a lubricating layer. When the hook pin 2 passes through the first mounting hole 101 and the second mounting hole 301, the elastic gasket 10 can tightly fit the hook pin 2 and the inner wall of the mounting hole, thereby achieving a more stable connection. This flexible buffer layer can effectively absorb and disperse various forces generated during train operation, reduce the direct transmission of forces, and thus improve the stability of the connection. At the same time, the lubricating layer allows the rubber bearing 7 bushing 702 to rotate flexibly around the hook pin 2.

[0087] In some embodiments of this application, an anti-loosening plate 11 is also provided above the cover plate 4. The fastener passes through the anti-loosening plate 11, the upper cover, and the elastic element 6 to fix the upper cover 4 to the mounting base 1. As a preferred embodiment, two anti-loosening plates 11 can be provided, arranged symmetrically, to enhance the reliability of the structure.

[0088] In this embodiment, the structural design of the rotary mechanism is further optimized, particularly in the fixed connection between the cover plate 4 and the mounting base 1. The anti-loosening plate 11, through its cooperation with the fastener, can effectively lock the position of the cover plate 4, preventing it from loosening and thus improving the reliability of the connection.

[0089] Example 2.

[0090] Refer to Figures 6 and 7.

[0091] The cover plate 4 is located at one end of the hook tail pin 2 in the axial direction, below the hook tail pin 2, and is fixedly connected to the hook tail pin 1. It should be understood that the cover plate 4 and the hook tail pin 2 can be fixedly connected by the fastener 5. In some embodiments, the cover plate 4 is circular, and its radial dimension is slightly larger than the size of the first mounting hole 101, ensuring that it can completely cover the first mounting hole 101.

[0092] In some embodiments, a groove structure is provided circumferentially on the lower end surface of the mounting base 1 in the first mounting hole 101. The circumferential dimension of the cover plate 4 matches the circumferential dimension of the groove. When the cover plate 4 is installed in conjunction with the hook pin 2, the cover plate 4 is located in the groove. An elastic element 6 is provided between the upper end surface of the cover plate 4 and the bottom surface of the groove.

[0093] In some embodiments, the anti-loosening plate below the cover plate 4 and the fastener 5 pass through the anti-loosening plate 11 and the cover plate 4 to fix the cover plate 4 to the hook pin 2. The anti-loosening plate 11 can increase the reliability of the fixation between the cover plate 4 and the hook pin 2.

[0094] In Example 2, the structure of the other parts of the rotary mechanism is the same as in Example 1, and will not be described again.

[0095] By adding a fixing between the mounting plate 4 and the hook pin 2, the compactness of the fit between the rotating parts can be increased, and the vertical gap between the rotating parts can be reduced.

[0096] This application also provides a vehicle that includes the noise reduction and slewing mechanism of the hook-and-response device provided in the first aspect of this application. Specifically, the vehicle includes a hook-and-response device, and the coupler portion of the hook-and-response device is connected to the noise reduction and slewing mechanism of the hook-and-response device.

[0097] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A noise-reducing rotary mechanism for a hook-and-slow device, characterized in that, include: Mounting base: A first mounting hole is formed on the mounting base; Hook buffer device: The hook buffer device has a second mounting hole, which is able to be opposite to the first mounting hole; Hook tail pin: passes through the first mounting hole and the second mounting hole to connect the mounting base and the hook buffer device; Cover plate: located at one end of the hook tail pin in the axial direction; wherein, based on the state of the noise reduction and rotation mechanism of the hook buffer device being adapted to the vehicle, if the cover plate is located above the hook tail pin in the axial direction, the cover plate is fixedly connected to the mounting base; if the cover plate is located below the hook tail pin in the axial direction, the cover plate is connected to the hook tail pin.

2. The noise reduction rotary mechanism of the hook and buffer device according to claim 1, characterized in that, The cover plate is fixedly connected to the mounting base, and an elastic element is installed between the cover plate and the hook pin.

3. The noise reduction rotary mechanism of the hook and buffer device according to claim 2, characterized in that, The cover plate and the hook pin form a snap-fit ​​structure, which is engaged with each other. The snap-fit ​​structure includes: an insert block provided on the cover plate and an insert groove provided on the hook pin, or an insert block provided on the hook pin and an insert groove provided on the cover plate.

4. The noise reduction rotary mechanism of the hook buffer device according to claim 2 or 3, characterized in that, The elastic element is disposed on the periphery of the snap-fit ​​structure, located on the inner side of the circumferential edge of the cover plate.

5. The noise-reducing rotary mechanism of the hook and buffer device according to claim 4, characterized in that, A protruding edge is provided along the circumferential edge of the cover plate toward the side that mates with the hook pin. The protruding edge abuts against the mounting base, and the elastic element is located between the protruding edge and the snap-fit ​​structure.

6. The noise-reducing rotary mechanism of the hook and buffer device according to claim 2, characterized in that, It also includes an anti-loosening plate disposed above the cover plate, and a fastener passes through the anti-loosening plate, the cover plate, and the elastic element to fix the cover plate to the mounting base.

7. The noise reduction rotary mechanism of the hook and buffer device according to claim 1, characterized in that, The cover plate is located below the hook tail pin in the axial direction. The cover plate has a mating part with the mounting base, and an elastic element is provided between the mating part and the mounting base.

8. The noise reduction rotary mechanism of the hook buffer device according to claim 7, characterized in that, It also includes an anti-loosening plate disposed below the cover plate, and a fastener passes through the anti-loosening plate and the cover plate to fix the cover plate to the hook pin.

9. The noise reduction rotary mechanism of the hook and buffer device according to claim 1, characterized in that, A rubber bearing is provided in the second mounting hole, and the bearing hole of the rubber bearing is opposite to the second mounting hole. The hook tail pin passes through the first mounting hole and the bearing hole to connect the mounting base and the hook buffer device.

10. The noise-reducing rotary mechanism of the hook buffer device according to claim 9, characterized in that, The rubber bearing includes a rubber sleeve and a bushing located on the inner circumference of the rubber sleeve. The bushing hole of the bushing is opposite to the second mounting hole. The hook pin passes through the first mounting hole and the bushing hole. The two ends of the bushing extend to the outside of the second mounting hole in the height direction. The hook pin is T-shaped and includes a horizontal part and a vertical part. A first elastic washer is provided between the first end of the bushing in the height direction and the horizontal part of the hook pin, and a second elastic washer is provided between the second end of the bushing in the height direction and the mounting seat.

Images