Composite shock column and manufacturing method thereof

Abstract

This invention provides a composite vibration damping column and its manufacturing method. It is composed of a sleeve-type composite spring and a vibration damping column body made of polymer material. A sleeve is externally disposed on the spring body to form a sleeve-type composite spring. The sleeve and the polymer material are fused together. In the composite vibration damping column, the spring body and the polymer material are not bonded together, allowing relative movement between the spring body and the vibration damping column body made of polymer material. This results in a parallel stiffness relationship between the outer polymer material and the spring body, improving the spring's stiffness and preventing torsional deformation during axial deformation. Furthermore, because the spring body is encased in polymer material, it is not easily corroded and has good durability, making it suitable for environments with severe acid and alkali corrosion.

Description

Technical Field

[0001] This invention relates to the field of vibration isolation and damping technology, and in particular to a composite vibration damping column and its manufacturing method. Background Technology

[0002] Currently, with the continuous development of urban transportation and the growth of the urban population, traffic volume is also increasing daily. Bridges are important urban transportation arteries, inevitably receiving increasing and more frequent vibration and noise sources from the surrounding environment, which affect traffic participants and nearby residents. Today, people's demands for their living environment are constantly rising, and the same applies to transportation. Therefore, it is necessary to incorporate vibration reduction measures into road and bridge structures to alleviate the vibration and noise brought about by the increase in traffic volume, balancing the contradiction between the comfort of the general public's travel and the increasing vibration and noise. Currently, there are relatively mature technologies for vibration reduction and seismic resistance measures for bridges both domestically and internationally, and many mature technologies and products have been developed to address vibration, noise, and impact. Existing rubber composite springs, which directly embed steel springs within rubber, cannot generate relative movement under impact and vibration due to direct contact between the rubber and the spring. When the rubber composite spring undergoes large deformation, a torsional effect occurs, easily leading to separation between the two components. This exposes the metal spring to the external environment, causing corrosion and reducing the service life of the structure. Therefore, in the design of composite springs, it is necessary to continuously improve the technology and develop a new type of composite material spring with better applicability, so as to facilitate construction, improve vibration reduction effect, and achieve better environmental and economic benefits.

[0003] To improve the vibration reduction and isolation capabilities of springs and the convenience of processing and construction, and to meet the application needs of different scenarios, this invention develops a composite vibration damping column that can more effectively reduce vibration and resist impact loads, and can be applied in more complex environments. Summary of the Invention

[0004] Objective of the Invention: To address the aforementioned technical problems, this invention proposes a composite vibration damping column and its preparation method. By wrapping a spring body with a sleeve, placing the sleeve-wrapped spring into a molding die, pouring in liquefied polymer material, and allowing it to cool and solidify, the sleeve and polymer material become integrated. The sleeve wrapping the spring allows the spring and polymer material to move relatively independently under tensile and compressive forces. This improves the stiffness of the composite spring to a certain extent, reduces corrosion, and forms a high-performance composite material spring.

[0005] A composite vibration damping column includes: a vibration damping column body made of a polymer material that can be compressed and deformed under external force; and a sleeve composite spring embedded inside the vibration damping column body, wherein the axis of the sleeve composite spring is coaxial with the axis of the vibration damping column body; the sleeve composite spring includes a spring body and a sleeve sleeved outside the spring body; when the composite vibration damping column is subjected to tension or compression, the spring body and the sleeve can move relative to each other, and the sleeve is tightly fitted and fixed to the vibration damping column body formed by the polymer material, thereby enabling the spring body and the vibration damping column body to move relatively independently, and their stiffness forms a parallel relationship.

[0006] The polymer material is polyurethane or rubber.

[0007] The spring body is made of metal or polymer composite materials.

[0008] The sleeve is made of polymer materials such as nylon or plastic.

[0009] The inner core of the spring body is circular, square, or frustum-shaped; the spring pitch is constant or variable.

[0010] The spring body has its head and tail ends flattened to form a horizontal upper support and a horizontal lower support. A gap is left between the horizontal upper surface of the horizontal upper support and the upper surface of the vibration damping column body, and a gap is left between the lower horizontal surface of the horizontal lower support and the lower surface of the vibration damping column body.

[0011] This invention further discloses a method for manufacturing the composite vibration damping column, comprising the following steps:

[0012] S1. Molded spring body;

[0013] S2. Forming the sleeve: After the sleeve is formed, it is sleeved with the spring body. After sleeved, the sleeve completely wraps the spring and plays an isolation role; S3. The wrapped sleeve composite spring is placed into the forming mold, and polymer material is injected. After the liquid polymer material fills the entire forming mold, the polymer material is allowed to solidify, and the formed composite vibration damping column is taken out.

[0014] The molding die includes a die sleeve and a support base at the bottom.

[0015] Beneficial effects: Compared with existing rubber composite springs, the composite vibration damping column of the present invention has the following advantages:

[0016] 1) In this invention, after the spring is fitted into the sleeve, a polymer material is injected. The sleeve, now integrated with the polymer material, acts as a channel, analogous to a prestressed concrete structure, as it does not directly contact the outer polymer material. A spring core is added to the composite elastic material, but this core also does not directly contact the outer polymer material, thus increasing the overall stiffness of the vibration-damping column. At this point, the sleeve is equivalent to a prestressed channel, which isolates the prestressed steel strands from the concrete. After the concrete is poured and formed, the load-bearing capacity of the prestressed concrete structure is increased. By fitting the sleeve over the spring body, the sleeve and polymer material become integrated after forming, allowing relative movement between the spring and polymer material under tensile and compressive deformation. This creates a parallel stiffness relationship between the polymer material and the spring body, increasing the stiffness of the composite spring structure and making it less prone to torsion during deformation, further improving the durability of the spring body under large deformations.

[0017] 2) The spring body is not easily corroded because it is wrapped in polymer material, and has good durability. Therefore, it can be used in environments with severe acid and alkali corrosion.

[0018] 3) The structure is simple, easy to manufacture, and can be mass-produced. Attached Figure Description

[0019] Figure 1 This invention relates to a composite vibration damping column with a circular, equal-pitch spring as its inner core. Figure 2 This invention relates to a composite vibration damping column with a circular variable pitch spring as its inner core;

[0020] Figure 3 This invention relates to a composite vibration damping column with a square spring as its inner core.

[0021] Figure 4 This invention relates to a composite vibration damping column with a frustum-shaped spring as its inner core.

[0022] Figure 5 This is a schematic diagram of the spring body structure of the present invention;

[0023] Figure 6 This is a schematic diagram of the sleeve structure;

[0024] Figure 7 This is a front view of the spring head position;

[0025] Figure 8 This is a schematic diagram of the mold;

[0026] Figure 9 A schematic diagram of a mold that includes a spring;

[0027] The figure includes: spring body 1, circular constant pitch spring 11, circular variable pitch spring 12, square spring 13, frustum-shaped spring 14, spring head position 15, sleeve 2, spring with sleeve 21, outer polymer material 3, molding mold 4, mold sleeve 41, mold bottom support 42. Detailed Implementation

[0028] The technical solution of the present invention will be further described in detail below with reference to specific embodiments and the accompanying drawings.

[0029] This invention discloses a composite vibration damping column, primarily comprising a spring body, a sleeve, and a polymer material. The spring body is encased in the sleeve, which is tightly bonded to the polymer material, preventing direct contact between the spring body and the polymer material. The spring body has flattened ends and can be made of metal or polymer material; the sleeve can be made of polymer fiber nylon or similar materials; and the polymer material layer can be made of polyurethane or rubber.

[0030] The spring body, encased in a sleeve, forms a channel and does not directly contact the polymer material. Under tensile and compressive forces, the spring body and the polymer material move relatively independently, their stiffnesses are in parallel, thus increasing the overall stiffness of the composite spring structure. The spring is not exposed to the external environment.

[0031] The manufacturing method of the composite vibration damping column includes the following steps: First, forming the spring body 1; Second, forming the sleeve 2, after the sleeve 2 is formed, inserting the sleeve 2 into the spring body 1, at this time the sleeve 2 completely wraps the spring body 1, playing an isolation role; Third, placing the wrapped spring body into the molding mold, and then injecting polymer material.

[0032] The forming mold consists of two main parts: the main part is the mold sleeve 41, and the bottom part is the mold bottom support 42.

[0033] Finally, once the liquid polymer material has filled the entire molding mold, stop pouring the polymer material. Then wait for the polymer material to solidify before removing the molded composite damping column.

[0034] The method of forming the present invention will be further described below with reference to the accompanying drawings and through embodiments: Embodiments

[0035] like Figure 1 , 5 As shown in Figures 6, 7, 8, and 9, this embodiment is a composite vibration damping column with a circular, equal-pitch spring as its inner core. The spring body is encased in a sleeve, which is tightly bonded to a polymer material, while the spring body and the polymer material do not directly contact each other. The spring body is circular with an equal pitch and can be made of metal or polymer materials; the sleeve can be made of polymer fiber nylon or similar materials; and the polymer material layer can be made of polyurethane or rubber.

[0036] The spring body, encased in a sleeve, forms a channel, preventing contact with the polymer material and exposure to the external environment, thus providing protection. When subjected to tension or compression, the spring body and the polymer material move relatively independently, their stiffnesses forming a parallel relationship, thereby increasing the overall stiffness of the composite vibration-damping column structure. Example

[0037] like Figure 2 , 5 As shown in Figures 6, 7, 8, and 9, this embodiment is a composite vibration damping column with a circular variable-pitch spring as its inner core. The spring body is encased in a sleeve, which is tightly bonded to a polymer material, while the spring body and the polymer material do not directly contact each other. The spring body is circular with a variable pitch and can be made of metal or polymer materials; the sleeve can be made of polymer fiber nylon or similar materials; and the polymer material layer can be made of polyurethane or rubber.

[0038] The spring body, encased in a sleeve, forms a channel, preventing contact with the polymer material and exposure to the external environment, thus providing protection. When subjected to tension or compression, the spring body and the polymer material move relatively independently, their stiffnesses forming a parallel relationship, thereby increasing the overall stiffness of the composite vibration-damping column structure. Example

[0039] like Figure 3 , 5 As shown in Figures 6, 7, 8, and 9, this embodiment is a composite vibration damping column with a square spring as its inner core. The spring body is encased in a sleeve, which is tightly bonded to a polymer material. The spring body and the vibration damping column body made of polymer material do not directly contact each other. The spring body is square in shape and can be made of metal or polymer material; the sleeve can be made of polymer fiber nylon or other materials; the polymer material layer can be made of polyurethane or rubber.

[0040] The spring body, encased in a sleeve, forms a channel, preventing it from contacting the polymer-material damping column and avoiding exposure to the external environment, thus providing protection. When subjected to tension or compression, the spring body and the polymer-material damping column move relatively independently, their stiffnesses forming a parallel relationship, resulting in an increased overall stiffness of the composite damping column. Example

[0041] like Figure 4 , 5 As shown in Figures 6, 7, 8, and 9, this embodiment is a composite vibration damping column with a frustum-shaped spring as its inner core. The spring body is encased in a sleeve, which is tightly bonded to a polymer material. The spring body and the vibration damping column body made of polymer material do not directly contact each other. The spring body is frustum-shaped and can be made of metal or polymer material; the sleeve can be made of polymer fiber nylon or similar materials; the polymer material layer can be made of polyurethane or rubber.

[0042] The spring body, encased in a sleeve, forms a channel, preventing it from contacting the polymer-material damping column and exposing it to the external environment, thus providing protection. When subjected to tension or compression, the spring body and the polymer-material damping column move relatively independently, their stiffnesses forming a parallel relationship, resulting in an increased overall stiffness of the composite damping column.

[0043] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A composite vibration damping column, characterized in that, include: The vibration damping column body is made of a polymer material that can be compressed and deformed under external force. A sleeve composite spring is embedded inside the damping column body, and the axis of the sleeve composite spring is coaxial with the axis of the damping column body. The sleeve composite spring includes a spring body (1) and a sleeve sleeved outside the spring body (1). When the composite damping column is subjected to tension and compression, the spring body and the sleeve can move relative to each other. The sleeve is tightly fitted and fixed to the damping column body formed by the polymer material, so that the spring body and the damping column body can move relatively independently and the stiffness forms a parallel relationship. The head and tail ends of the spring body (1) are flattened to form a horizontal upper support part and a horizontal lower support part. A gap is left between the horizontal upper surface of the horizontal upper support part and the upper surface of the vibration damping column body. A gap is left between the lower horizontal surface of the horizontal lower support part and the lower surface of the vibration damping column body. The spring body forms a channel under the sleeve, and does not directly contact the damping column body made of polymer material. The damping column body made of polymer material and the spring body form a parallel relationship in terms of stiffness, thereby increasing the stiffness of the composite spring structure, and making it less prone to torsion when the composite spring deforms.

2. The composite vibration damping column according to claim 1, characterized in that, The polymer material is polyurethane or rubber.

3. The composite vibration damping column according to claim 1, characterized in that, The spring body (1) is made of metal or polymer material spring composite.

4. The composite vibration damping column according to claim 1, characterized in that, The sleeve (2) is made of polymer materials such as nylon or plastic.

5. The composite vibration damping column according to claim 1, characterized in that, The inner core of the spring body (1) is circular, square, or frustum-shaped; the spring pitch is constant or variable.

6. A method for manufacturing a composite vibration damping column based on any one of claims 1 to 5, characterized in that, Includes the following steps: S1. Molded spring body (1); S2. Molded sleeve (2), after the sleeve is formed, the sleeve is sleeved with the spring body. After sleeved, the sleeve completely wraps the spring and plays an isolation role. S3. Place the wrapped sleeve composite spring (21) into the molding mold (4), inject polymer material, and after the liquid polymer material fills the entire molding mold, wait for the polymer material to solidify and take out the molded composite damping column.

7. The method for manufacturing the composite vibration damping column according to claim 6, characterized in that, The forming mold (4) includes a mold sleeve (41) and a support base (42) at the bottom.

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