A vibration isolation backing plate

Abstract

The present invention relates to a vibration isolation cushion plate and a vibration isolation cushion plate material. The vibration isolation cushion plate includes a cushion plate and a plug block; elastic first convex platforms are arranged at intervals on the upper surface of the cushion plate, and jacks are arranged on the first convex platforms; several convex columns are arranged at intervals between adjacent first convex platforms; second convex platforms are arranged at intervals on the lower surface of the cushion plate; the size of the plug block is slightly larger than the aperture of the jack; the plug block is inserted into the jack, and the first convex platform is adaptively deformed following the insertion of the plug block. The vibration isolation cushion plate material of the present invention has good wear resistance and a long service life.

Description

Technical Field

[0001] The present invention relates to a vibration isolation cushion plate. Background Art

[0002] Railways have advantages such as large transportation capacity and high speed. Due to the increasing speed of trains and the corresponding increase in axle load, the damage to the roadbed is becoming greater and greater, and the working hours for line maintenance are increasing. Appropriate vibration isolation measures can reduce the pulverization of ballast. At present, vibration isolation cushion plates mainly use rubber materials. The aging resistance and strength of ordinary rubber materials cannot well meet the use requirements, and the production speed of rubber materials is relatively slow. Summary of the Invention

[0003] The present invention provides a vibration isolation cushion plate with good vibration damping effect and long service life. The technical solution to achieve the above purpose is as follows:

[0004] A vibration isolation cushion plate includes a cushion plate and a plug block; the cushion plate is made of vibration isolation cushion plate material;

[0005] Elastic first convex platforms are arranged at intervals on the upper surface of the cushion plate, and insertion holes are arranged on the first convex platforms; several convex columns are arranged at intervals between adjacent first convex platforms;

[0006] Second convex platforms are arranged at intervals on the lower surface of the cushion plate;

[0007] The size of the plug block is slightly larger than the aperture of the insertion hole;

[0008] The plug block is inserted into the insertion hole, and the first convex platform is adaptively deformed following the insertion of the plug block.

[0009] The present invention also includes a vibration isolation cushion plate material. The cushion plate is made of a material with tear resistance. The material with tear resistance contains the following raw materials in parts by weight:

[0010] 50 - 70 parts of polyester elastomer, 20 - 30 parts of functional masterbatch, 10 - 20 parts of hydrolysis-resistant masterbatch, 5 - 10 parts of foaming agent, and the functional masterbatch has tear resistance.

[0011] The vibration isolation cushion plate material is injection-molded in a mold with a coaxial ejector mechanism to form a vibration isolation cushion plate.

[0012] The vibration isolation cushion plate in the present invention weakens vibration, thereby reducing the vibration acting on the ballast and avoiding the pulverization of the ballast. The vibration isolation cushion plate made of the material of the present invention has better tear resistance. Brief Description of the Drawings

[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0014] Figure 1 Schematic diagram of Embodiment 1 of the present invention;

[0015] Figure 2 Schematic diagram of the plug block;

[0016] Figure 3 Schematic diagram of Embodiment 2 of the present invention;

[0017] Explanation of the reference numerals of the accompanying drawings: backing plate 1, first boss 2, jack 3, stud 4, second boss 5, plug block 6, trapezoidal block 61, rectangular block 62, shaft hole 7, connecting block 8. Detailed implementation manners

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0019] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0020] The terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "plural" is two or more.

[0021] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. At least one embodiment of the present invention provides the following technical solutions:

[0022] Embodiment 1:

[0023] In the figure, the vibration isolation cushion plate includes a cushion plate 1. On the upper surface of the cushion plate 1, elastic first bosses 2 are arranged at intervals. A jack 3 is arranged on the first boss 2, and the jack 3 is a blind hole; several convex columns 4 are arranged at intervals between adjacent first bosses 2, and the distance between the convex columns 4 is between 1 and 3 millimeters. The arrangement of the convex columns 4 can compensate for the insufficient force when the first boss 2 deforms. For example, when the first boss 2 is pressed down by an external force, because the convex columns 4 are arranged relatively closely, the overall compressive capacity between the convex columns 4 is greater than the compressive capacity of a single first boss 2. At this time, the convex columns 4 play a compressive role and wait for the first boss 2 to rebound.

[0024] Preferably, the cross-sectional shape of the convex column 4 can be a columnar structure, and holes can be arranged on the columnar structure;

[0025] As an option, second bosses 5 are arranged at intervals on the lower surface of the cushion plate 1; the area of the second boss 5 is larger than the area of the first boss 2;

[0026] Preferably, the cushion plate 1, the first boss 2, and the second boss 5 are integrally formed; more preferably, the materials of the cushion plate 1, the first boss 2, and the second boss 5 can be selected from materials with different hardnesses to adapt to different requirements;

[0027] A plug block 6 is inserted into the jack 3 of the first boss 2. The size of the plug block 6 is slightly larger than the aperture of the jack 3. When the plug block 6 is inserted into the jack 3, since the first boss 2 is made of an elastic material, the jack 3 changes following the shape of the plug block 6, and thus the whole of the first boss 2 also deforms adaptively following the shape of the plug block 6. The material of the first boss 2 can be selected as a polyester material or the same material as the cushion plate material;

[0028] Preferably, the size of the plug block 6 is 0.2 - 0.8 millimeters larger than the aperture of the jack 3;

[0029] A shaft hole 7 is arranged at the axis of the plug block 6, and concrete can be poured into the shaft hole 7;

[0030] The middle of the plug block 6 adopts a hollow structure, which can improve the forming uniformity of the large-volume solid structure. Concrete penetrates into the shaft hole 7 at the same time to form a concrete column structure, improving the connection strength between the plug block 6 and the first boss 2 and the ability to resist lateral forces;

[0031] Of course, as an option, the plug block 6 can be made of a material with a different hardness from that of the first boss 2;

[0032] The hardnesses of the above materials are different, improving the range of the stiffness adaptation of the vibration isolation backing plate.

[0033] In the present invention, it is preferred that the cross-section of the plug block 6 is a cylinder; at this time, the size of the plug block 6 is 0.2 - 0.8 mm larger than the aperture of the jack 3;

[0034] As another option, the plug block 6 can also be a trapezoidal block 61 with an isosceles trapezoid cross-section, and the upper base of the trapezoidal block 61 forms the bottom of the plug block; along the waist of the trapezoidal block, the size gradually increases. At this time, the lower base size of the trapezoidal block 61 can be 0.2 - 0.8 mm larger than the aperture of the jack 3, and the upper base of the trapezoidal block 5161 is the same as the diameter of the jack 3 or slightly smaller than the diameter of the jack;

[0035] As a further option, a rectangular block 62 with a rectangular cross-section is provided on the lower base of the trapezoidal block 61, and the width of the rectangular block 62 is slightly smaller than the lower base of the trapezoidal block 61. After the plug block 6 is inserted into the jack 3, the rectangular block 62 completely covers the jack 3, improving the firmness of the plug block 6 inserted.

[0036] When the plug block 6 is inserted into the jack 23, the jack changes following the structure of the isosceles trapezoid, so that the first boss 2 deforms into the structure of an isosceles trapezoid after the plug block is completely inserted into the jack;

[0037] The size and taper of the shaft hole of the plug block 6 can be adjusted according to needs, and can adapt to the characteristics of different materials.

[0038] As a preferred option, the angle a between the trapezoidal block 61 and the perpendicular line is between 0 - 50 degrees, and the range of 0 - 15 degrees is the best;

[0039] The deformation range of the first boss 2 is adjustable, and plug blocks 6 with different tapers and sizes can be inserted according to different hardnesses to obtain connection conical platforms with different sizes and tapers for cooperation with the sleeper.

[0040] Therefore, the backing plate 1, the first boss 2, and the second boss 5 can be integrally formed. Compared with designing the whole mold into a trapezoidal structure, in the present invention, the first boss is deformed into a trapezoidal or conical structure through the structure of the plug block, simplifying the mold design and improving the production speed of the product.

[0041] As a further option, the plug 6 can be made of nylon or polyester; while the backing plate and the first boss 2 can be made of materials with tear resistance, and the deformation and tear resistance strength of the backing plate with tear resistance are enhanced.

[0042] Preferably, the cross-section of the second boss 5 is an isosceles trapezoid structure; the lower base of the isosceles trapezoid structure is connected to the backing plate 1.

[0043] As a preferred option, the angle a between the second boss 5 and the vertical line is between 0 - 50 degrees, and the range of 0 - 15 degrees is optimal.

[0044] Embodiment 2:

[0045] The difference between Embodiment 2 and Embodiment 1 is that the adjacent first bosses 2 are connected together by a connecting block 8, where the connecting block 8 is a mesh structure, and the meshes in the mesh structure can be traditional cross-shaped meshes or vertically arranged parallel meshes; when pouring, the meshes are filled with cement.

[0046] Next, the usage method of the present invention will be described:

[0047] When in use, place the vibration isolation backing plate under the sleeper, and use cement to pour the vibration isolation backing plate and ballast together. Finally, pour cement again between the lower part of the sleeper and the vibration isolation backing plate to strengthen the connection strength between the two. When the train passes by, the sleeper transmits the vibration to the vibration isolation backing plate, and the vibration isolation backing plate weakens the vibration, thereby reducing the vibration acting on the ballast and avoiding the crushing of the ballast.

[0048] The material with tear resistance in the present invention comprises the following raw materials in parts by weight:

[0049] 50 - 70 parts of polyester elastomer, 20 - 30 parts of functional masterbatch, 10 - 20 parts of hydrolysis-resistant masterbatch, 5 - 10 parts of foaming agent, and the functional masterbatch has tear resistance;

[0050] Adding a functional masterbatch with tear resistance to the polyester elastomer can improve the puncture resistance of the material; adding a hydrolysis-resistant masterbatch to the polyester elastomer at the same time can improve the service life of the material in a humid environment; adding a foaming agent at the same time can improve the forming accuracy of the large-volume area of the vibration isolation backing plate;

[0051] As a preferred option, the polyester elastomer is 60 parts, the functional masterbatch is 20 parts, the hydrolysis-resistant masterbatch is 15 parts, and the foaming agent is 5 parts; the material of the above formula has excellent tear resistance;

[0052] As a preferred option, the polyester elastomer is 65 parts, the functional masterbatch is 15 parts, the hydrolysis-resistant masterbatch is 15 parts, and the foaming agent is 5 parts;

[0053] Compared with the materials of the two components, the first component material has better tear resistance than the second component material, and the second component has better elastic recovery ability than the first component material.

[0054] The manufacturing method of the vibration isolation pad is described below:

[0055] (1) Prepare 60 parts of polyester elastomer, 20 parts of functional masterbatch, 15 parts of hydrolysis-resistant masterbatch, and 5 parts of blowing agent;

[0056] (2) Mix the polyester elastomer, functional masterbatch, hydrolysis-resistant masterbatch, and blowing agent together, and then put them into an injection molding machine with a self-locking head for foaming to ensure the uniformity of the vibration isolation pad foaming;

[0057] (3) After foaming is completed, inject the material into the mold of the collaborative lifter mechanism, and finally demold to complete the product production.

[0058] (4) If different materials are needed for different parts, multiple injections are required in the mold of the collaborative lifter mechanism.

[0059] The above are only the preferred embodiments of the embodiments of the present invention, and are not intended to limit the embodiments of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the embodiments of the present invention shall be included within the protection scope of the embodiments of the present invention.

Claims

1. A vibration isolation cushion plate, characterized in that: it includes a cushion plate and a plug block; elastic first bosses are arranged at intervals on the upper surface of the cushion plate, jacks are arranged on the first bosses, and the jacks are blind holes; several convex columns are arranged at intervals between adjacent first bosses, and the distance between the convex columns is between 1 and 3 millimeters; second bosses are arranged at intervals on the lower surface of the cushion plate, and the area of the second bosses is larger than that of the first bosses; the size of the plug block is slightly larger than the aperture of the jack; the plug block is inserted into the jack, and the first boss deforms adaptively following the insertion of the plug block; a shaft hole is arranged at the axis of the plug block, and concrete is poured into the shaft hole; the plug block includes a trapezoidal block with an isosceles trapezoid cross-section, and the upper base of the trapezoidal block forms the bottom of the plug block; or the plug block is a columnar structure; a rectangular block with a rectangular cross-section is arranged on the lower base of the trapezoidal block, and the width of the rectangular block is smaller than the lower base of the trapezoidal block and larger than the aperture of the jack.

2. The vibration isolation cushion plate according to claim 1, characterized in that: the cross-section of the second boss is an isosceles trapezoid structure; the lower base of the isosceles trapezoid structure is connected to the cushion plate.

3. The vibration isolation cushion plate according to claim 1, characterized in that: the cushion plate, the first boss and the second boss are integrally formed; and / or the materials of the cushion plate, the plug block, the first boss and the second boss have the same or different hardness.

4. The vibration isolation cushion plate according to claim 1, characterized in that: the cushion plate is made of a material with tear resistance, and the material with tear resistance contains the following raw materials in parts by weight: 50-70 parts of polyester elastomer, 20-30 parts of functional masterbatch, 10-20 parts of hydrolysis-resistant masterbatch, 5-10 parts of foaming agent, and the functional masterbatch has tear resistance.

5. The vibration isolation cushion plate according to claim 4, characterized in that: the polyester elastomer is 60 parts, the functional masterbatch is 20 parts, the hydrolysis-resistant masterbatch is 15 parts, and the foaming agent is 5 parts.

6. The vibration isolation cushion plate according to claim 4, characterized in that: the polyester elastomer is 65 parts, the functional masterbatch is 15 parts, the hydrolysis-resistant masterbatch is 15 parts, and the foaming agent is 5 parts.

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