Support-type lifting element and stiffness adjustment method thereof

Abstract

The present invention provides a supporting type lifting element and a method for adjusting the stiffness thereof. The supporting type lifting element comprises a central shaft, a rubber body and a support plate. The central shaft comprises a core shaft and a top plate vertically arranged at its end. A mounting hole penetrating both the core shaft and the top plate is arranged along the axial direction of the core shaft. The support plate is a concave structure, a connecting hole with a diameter larger than the core shaft is arranged at the bottom, an outwardly expanded connecting edge is arranged at the top, and a lifting hole is arranged in the connecting edge. The core shaft is inserted into the connecting hole, and a ring-shaped rubber body is arranged between the core shaft, the top plate and the support plate. The method for adjusting the stiffness of the supporting type lifting element is to adjust the vertical, lateral and longitudinal stiffness by replacing any one of the central shaft, the rubber body and the support plate. The supporting type lifting element and the method for adjusting the stiffness thereof provided by the present invention solve the defects of the existing hanging structure, such as inconvenient assembly, poor vibration reduction effect and easy breakage of bolts.

Description

Technical Field

[0001] The invention relates to the field of undercarriage suspension equipment for high-speed vehicles, and in particular to a support-type suspension element and a stiffness adjustment method thereof. Background Art

[0002] The undercarriage suspension equipment of high-speed rail vehicles, including high-voltage boxes, brake units, batteries, traction converters, etc., are all fixed by lifting components and provide vibration reduction and buffering functions. They are the core components of the undercarriage system of rail vehicles, and their performance directly affects the working state of the equipment. The existing lifting components have bolts with their own iron parts, which are non-standard parts, and require two products to be assembled to provide vibration reduction functions. The original products have experienced bolt breakage during use.

[0003] For example, the patent with publication number "CN218112635U" discloses a solution as above. In this solution, two buffers are arranged opposite to each other, and a fastener is arranged between them, which has the disadvantages of inconvenient assembly, poor vibration reduction effect, and easy breakage of bolts. Summary of the invention

[0004] In order to solve the defects of the existing hanging structure such as inconvenient assembly, poor vibration reduction effect and easy breakage of bolts, the present invention provides a supporting hanging element and a stiffness adjustment method thereof that solve the above problems.

[0005] A bracket-type lifting element, comprising a central shaft, a rubber body and a support plate, wherein the central shaft is a T-shaped structure, comprising a core shaft and a top plate vertically arranged at the end thereof, and a mounting hole penetrating the core shaft and the top plate is arranged along the axial direction of the core shaft, the support plate is a concave structure, a connecting hole having a diameter greater than that of the core shaft is arranged at the bottom, an outwardly expanded connecting edge is arranged at the top, and a lifting hole is arranged in the connecting edge, an end of the core shaft away from the top plate is inserted into the connecting hole from the concave surface of the support plate, and an annular rubber body is arranged between the core shaft, the top plate and the support plate;

[0006] The top plate is close to the support plate and gradually thickens in the direction approaching the core shaft to form a conical surface surrounding the core shaft and transitions to the rounded corner of the core shaft; the inner side surface of the bottom of the support plate is gradually thinned in the direction approaching the connecting hole to form a conical surface surrounding the connecting hole and transitions to the rounded corner of the connecting hole.

[0007] In a preferred embodiment of the support-type lifting element provided by the present invention, an annular rubber body is glued between the core shaft, the top plate and the support plate.

[0008] In a preferred embodiment of the support-type lifting element provided by the present invention, an annular rubber body is installed between the core shaft, the top plate and the support plate.

[0009] In a preferred embodiment of the supporting lifting element provided by the present invention, a pair of parallel flat walls are provided on the side wall of one end of the core shaft away from the top plate.

[0010] In a preferred embodiment of the supporting type lifting element provided by the present invention, the outer side of the rubber body is glued to the inner side of the bottom of the support plate, and a thin layer extends to the side of the support plate and the inside of the connecting hole, and the inner side is glued to the middle of the core shaft, and a thin layer extends to the top plate and the end of the core shaft away from the top plate. A gap is maintained between the core shaft and the rubber body thin layer on the surface of the connecting hole.

[0011] In a preferred embodiment of the bracket-type lifting element provided by the present invention, a circle of steps is provided on the outer side of the bottom of the support plate along the connection hole. The inner side of the rubber body abuts against the top plate and the core shaft, and the outer side fills the gap between the core shaft and the support plate and connects with the support plate along the connection hole.

[0012] A stiffness adjustment method: replacing any one of a central shaft, a rubber body, and a support plate to adjust the vertical, lateral, and longitudinal stiffness.

[0013] In a preferred embodiment of the stiffness adjustment method provided by the present invention, different rubber bodies are replaced to change the height difference between the top plate and the support plate, thereby changing the deformation of the product. The smaller the deformation, the greater the vertical stiffness; different center axes are replaced to change the angle between the top plate and the core axis. The larger the angle, the higher the vertical stiffness and the lower the transverse and longitudinal stiffness; different support plates are replaced to change the angle between the inner side surface of the bottom and the core axis. The smaller the angle, the lower the vertical stiffness and the higher the transverse and longitudinal stiffness.

[0014] Compared with the prior art, the supporting lifting element and the stiffness adjustment method thereof provided by the present invention have the following beneficial effects:

[0015] 1. The product provided by the present invention can be vulcanized in whole or in parts. The whole vulcanization is suitable for the requirements of greater vertical stiffness, while the part vulcanization is suitable for the requirements of smaller vertical stiffness. It can adapt to different usage scenarios and achieve a balance between vibration reduction effect and production cost.

[0016] 2. The three-way stiffness of the product provided by the present invention is adjustable.

[0017] During overall vulcanization, the three-way stiffness can be adjusted by designing the rubber structure, such as the rubber height, the center axis and the bevel angle of the support plate, and the area of ​​the rubber contacting the center axis when the rubber is vertically deformed to a certain extent. At the same time, by designing the rubber surface, the rubber profile is designed.

[0018] During split vulcanization, different rubbers can be loaded, such as different parameters such as height and width. At the same time, by designing the rubber profile, the required rubber part can be easily adjusted to meet different stiffness requirements while the cost is relatively low.

[0019] 3. The product provided by the present invention is designed with a limited size between the central axis and the support plate, so that the product has a hard stop limit function under the conditions of lateral and longitudinal displacement.

[0020] 4. The product provided by the present invention is designed with a positioning hole on the top of the central axis, which is conducive to the positioning of the mold, realizes the precise positioning of the central axis and the support seat, and prevents misalignment.

[0021] 5. The product provided by the present invention has an anti-rotation design on the central axis, which can be adjusted according to the installation size of the middle bolt. When installing the product, the anti-rotation groove can be used for positioning, and the fixture can be installed and assembled to prevent the product from rotating, making installation easy.

[0022] 6. In the product provided by the present invention, the mounting bolts are arranged in a single central axis to reduce shear stress, and bolts of different specifications can be used according to needs to avoid breakage of the mounting bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a cross-sectional view of the support-type lifting element in Example 1;

[0024] Figure 2 It is a structural schematic diagram of the installation of the support-type lifting component in Example 1;

[0025] Figure 3 is a schematic structural diagram of the stiffness adjustment of the supporting type lifting element in Example 1;

[0026] Figure 4 It is a cross-sectional view of the support-type lifting element in Example 2.

[0027] Reference numerals in the figure: central axis 1, core axis 11, top plate 12, rubber body 2, support plate 3, concave plate 31, connecting edge 32, mounting fixture 4, mounting bolt 5. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] Example 1: Please refer to Figure 1 , is a cross-sectional view of the support-type lifting element in this embodiment.

[0030] The bracket-type lifting element includes a central shaft 1, a rubber body 2 and a support plate 3. The central shaft 1 includes a core shaft 11 and a top plate 12. The support plate 3 includes a concave plate 31 and a connecting edge 32. The central shaft 1, the rubber body 2 and the support plate 3 in this embodiment are integrally vulcanized.

[0031] A pair of parallel flat walls are provided on the outer side wall of the lower end of the mandrel 11 to limit the position and prevent rotation. A top plate 12 is vertically provided on the outer side wall of the upper end of the mandrel 11, and the mandrel 11 and the top plate 12 are an integral structure. A mounting hole is provided in the center of the mandrel 11 along the axial direction. The top plate 12 is a circular plate, the top surface of which is flat, and the bottom surface gradually increases in thickness from the outside to the inside to form a conical surface, and transitions with the mandrel 11 with a rounded corner.

[0032] The top plate 12 is also provided with positioning holes, which are beneficial to the positioning of the mold, and realize the precise positioning between the central axis 1 and the support plate 3 to prevent misalignment.

[0033] The concave plate 31 is set at an angle with the opening facing upward, and its two ends are horizontally expanded outward to form two connecting edges 32, and each is provided with a lifting hole. The concave plate 31 and the connecting edge 32 are an integral structure. A connecting hole with a diameter larger than the core shaft 11 is provided at the bottom center of the concave plate 31. The outer side surface of the bottom of the concave plate 31 is flat, and the inner side surface gradually decreases in thickness from the outside to the inside to form a conical surface, and transitions to the connecting hole with a rounded corner.

[0034] The lower end of the core shaft 11 is inserted into the connecting hole.

[0035] The rubber body 2 is an annular structure and is vulcanized between the core shaft 11 and the concave plate 31. Specifically, the inner side of the rubber body 2 is glued to the middle of the core shaft 11 and extends to the edge of the top plate 12 and the lower end of the core shaft 11 in a thin layer; the outer side of the rubber body 2 is glued to the conical surface of the concave plate 31 and extends to the connection hole and the bottom of the concave plate 31 near the side in a thin layer.

[0036] A gap is maintained between the thin rubber body 2 at the lower end of the core shaft 11 and the thin rubber body 2 inside the connecting hole, so that the core shaft 11 is connected to the support plate 3 through the rubber body 2 .

[0037] See also Figure 2 , is a schematic diagram of the structure of the installation of the support-type lifting components in this embodiment. Figure 2 Shown in the figure is a partial structure with the bottom of the bracket-mounted lifting element facing upward.

[0038] The mounting bolt 5 is inserted into the mounting hole from the upper end of the mandrel 11 (the end with the top plate 12), the head of the mounting bolt 5 abuts against the top plate 12, and the tail of the mounting bolt 5 is inserted from the lower end of the mandrel 11 (the end with the top plate 12). Figure 2 One end of the mounting fixture 4 is connected to the lower end of the mandrel 11 ( Figure 2The other end is connected with the head of the mounting bolt 5 (not shown in the attached figure). This realizes the anti-rotation limit, prevents the product from rotating, and facilitates assembly.

[0039] See also Figure 3 , is a schematic diagram of the structure of the support-type lifting element for adjusting the stiffness in this embodiment. Figure 1 The same, only the reference numerals are different.

[0040] The B value is the distance between the highest position of the conical surface of the top plate 12 and the highest position of the concave plate 31. The smaller the B value is, the smaller the deformation of the product is, and the vertical rigidity is correspondingly increased.

[0041] The H value is the angle between the axis of the core shaft 11 and the conical surface of the top plate 12. The larger the H angle is, the earlier the rubber contacts the top plate when the product is deformed, which will increase the vertical stiffness of the product, but reduce the transverse and longitudinal stiffness of the product.

[0042] The L value is the angle between the rubber body 2 and the contact surface between the central axis 1 and the support plate 3. The smaller the L angle is, the smaller the vertical stiffness of the product will be, and the greater the transverse and longitudinal stiffness will be.

[0043] Example 2: Please refer to Figure 4 , is a cross-sectional view of the support-type lifting element in this embodiment.

[0044] The bracket-type lifting element includes a central shaft 1, a rubber body 2 and a support plate 3. The central shaft 1 includes a core shaft 11 and a top plate 12. The support plate 3 includes a concave plate 31 and a connecting edge 32. The central shaft 1, the rubber body 2 and the support plate 3 in this embodiment are assembled separately.

[0045] The structure of the central axis 1 is consistent with that in Embodiment 1, and will not be described in detail.

[0046] The difference between the support plate 3 and the embodiment 1 is that a circle of steps is provided on the outer side surface of the bottom of the concave plate 31 along the periphery of the connecting hole.

[0047] The rubber body 2 is an annular structure and is installed between the core shaft 11 and the concave plate 31. Specifically, the lower part of the rubber body 2 is inserted between the core shaft 11 and the connecting hole, the inner side abuts against the core shaft 11, and the outer side is connected to the connecting hole and its surrounding step structure.

[0048] The rubber body 2 is located at the upper part, with the inner side continuing to contact the core shaft 11 and the top plate 12 , and the outer side protruding and maintaining a distance from the side of the concave plate 31 .

[0049] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A support-type lifting component, characterized in that: It includes a central shaft, a rubber body and a support plate. The central shaft is a T-shaped structure, including a core shaft and a top plate vertically arranged at its end. A mounting hole that penetrates both the core shaft and the top plate is arranged along the axial direction of the core shaft. The support plate is a concave structure, a connecting hole with a diameter larger than that of the core shaft is arranged at the bottom, an outwardly expanded connecting edge is arranged at the top, and a hanging hole is arranged in the connecting edge. One end of the core shaft away from the top plate is inserted into the connecting hole from the concave surface of the support plate. The annular rubber body is arranged between the core shaft, the top plate and the support plate. The top plate is close to the support plate and gradually thickens in the direction approaching the core shaft to form a conical surface surrounding the core shaft and transitions to the rounded corner of the core shaft; the inner side surface of the bottom of the support plate is gradually thinned in the direction approaching the connecting hole to form a conical surface surrounding the connecting hole and transitions to the rounded corner of the connecting hole.

2. The support-type lifting element according to claim 1, characterized in that: The annular rubber body is glued between the core shaft, the top plate and the support plate.

3. The support-type lifting element according to claim 1, characterized in that: The annular rubber body is installed between the core shaft, the top plate and the support plate.

4. The support-type lifting element according to claim 1, characterized in that: A pair of parallel flat walls is provided on a side wall of one end of the core shaft away from the top plate.

5. The support-type lifting component according to any one of claims 1 to 4, characterized in that: The outer side of the rubber body is glued to the inner side of the bottom of the support plate, and a thin layer extends to the side of the support plate and the connecting hole, and the inner side is glued to the middle of the core shaft, and a thin layer extends to the top plate and the end of the core shaft away from the top plate.

6. The support-type lifting element according to claim 5, characterized in that: A gap is maintained between the core shaft and the rubber thin layer on the surface of the connecting hole.

7. The support-type lifting component according to any one of claims 1 to 4, characterized in that: The outer side surface of the bottom of the support plate is provided with a circle of steps along the connecting hole.

8. The support-type lifting element according to claim 7, characterized in that: The inner side of the rubber body abuts against the top plate and the core shaft, and the outer side fills the gap between the core shaft and the support plate and is connected with the support plate along the connecting hole.

9. A method for adjusting the stiffness of a support-type lifting element according to any one of claims 1 to 4, characterized in that: Replace any one of the center shaft, rubber body, and support plate to adjust the vertical, lateral, and longitudinal stiffness.

10. The stiffness adjustment method according to claim 9, characterized in that: Replace different rubber bodies to change the height difference between the top plate and the support plate, thereby changing the deformation of the product. The smaller the deformation, the greater the vertical stiffness. Replace different center axes to change the angle between the top plate and the core axis. The larger the angle, the higher the vertical stiffness and the lower the lateral and longitudinal stiffness. Replace different support plates to change the angle between the bottom inner side and the core axis. The smaller the angle, the lower the vertical stiffness and the higher the lateral and longitudinal stiffness.

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