3D printing mortise and tenon imitating structure interlocking type viscoelastic shock absorber

Abstract

The utility model discloses a 3D printing imitated tenon-and-mortise structure interlocking type viscoelastic shock absorber which comprises an upper connecting plate, a lower connecting plate, a shock absorption original part and a right-angle fixing plate, and the shock absorption original part is of an imitated tenon-and-mortise structure and comprises a left side steel plate, a right side steel plate, a middle steel plate and 3D printing viscoelastic materials. The upper connecting plate is fixedly connected with the middle steel plate through the right-angle fixing plate, and the lower connecting plate is fixedly connected with the left side steel plate and the right side steel plate through bolts. The flat-interface shock absorber has the advantages that a traditional tenon-and-mortise structure and an existing 3D printing technology are fused, the steel plate and the viscoelastic material are connected through the specific interlocking capacity of the tenon-and-mortise structure, high resistance to pullout force is provided, and compared with a traditional flat-interface shock absorber, the flat-interface shock absorber can achieve high-energy dissipation. And by adjusting the design parameters of the tenon-and-mortise structure, a greater degree of freedom can be provided for optimization design.

Description

Technical Field

[0001] The utility model relates to the field of vibration reduction control and additive manufacturing technology, and specifically is a 3D printed imitation mortise and tenon structure interlocking viscoelastic vibration damper. Background Art

[0002] As a simple and efficient energy dissipation and vibration reduction device, viscoelastic vibration dampers have been widely used in high-rise buildings and bridge structures to control vibrations and limit damage caused by extreme earthquakes or wind loads. They are mainly composed of two parts: steel plates and viscoelastic materials, among which viscoelastic materials are the core of vibration reduction control. The work of traditional viscoelastic dampers mainly relies on the plane interface between the steel plate and the viscoelastic material to transfer shear loads, and the viscoelastic material layer is easily torn and damaged.

[0003] The steel plate and viscoelastic material of traditional viscoelastic dampers are usually connected by vulcanization, which is costly and slow. In addition, viscoelastic dampers manufactured by traditional vulcanization methods can only provide a limited number of adjustable design parameters to improve energy dissipation efficiency (for example, the shear area and thickness of the damper), which greatly limits the design possibilities of traditional viscoelastic dampers.

[0004] 3D printing technology provides flexibility for the design of viscoelastic vibration dampers. Through 3D printing technology, viscoelastic materials with complex shapes and precise parameters can be manufactured according to the design. Therefore, a 3D printed imitation mortise and tenon structure interlocking viscoelastic vibration damper is developed to realize the production of complex structure vibration dampers more quickly and intelligently, and it is easy to adjust the vibration damper parameters so that it can be flexibly applied in the field of vibration control. Utility Model Content

[0005] The purpose of the utility model is to provide a 3D printed imitation mortise and tenon structure interlocking viscoelastic vibration damper to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A 3D printed imitation mortise and tenon structure interlocking viscoelastic vibration damper, characterized in that it includes an upper connecting plate, a lower connecting plate, a vibration damping original part and a right-angle fixing plate, the vibration damping original part is an imitation mortise and tenon structure, including a left steel plate, a right steel plate, a middle steel plate and a 3D printed viscoelastic material, the 3D printed viscoelastic material has two pieces, one is located between the left steel plate and the middle steel plate, and the other is located between the right steel plate and the middle steel plate, the left steel plate, the right steel plate, the middle steel plate and the 3D printed viscoelastic material are connected by mechanical interlocking, the 3D printed viscoelastic material is made by 3D printing technology, and is provided with a large number of protruding tenons on both sides, a large number of recessed mortises are provided on one side of the left steel plate and the right steel plate, and a large number of recessed mortises are provided on both sides of the middle steel plate.

[0008] As a further solution of the utility model: the upper connecting plate is fixedly connected to the middle steel plate through a right-angle fixing plate, and the lower connecting plate is fixedly connected to the left steel plate and the right steel plate respectively through bolts.

[0009] As a further solution of the utility model: bolt holes are arranged on the lower bottom surfaces of the left steel plate and the right steel plate, and bolt holes are arranged on both sides of the upper end of the middle steel plate.

[0010] As a further solution of the utility model: the right-angle fixing plate is connected to the middle steel plate and the upper connecting plate respectively by bolts, and bolt holes are arranged on two right-angle sides of the right-angle fixing plate.

[0011] Compared with the prior art, the utility model provides a 3D printed imitation mortise and tenon structure interlocking viscoelastic vibration damper, which has the following beneficial effects:

[0012] The utility model combines the mortise and tenon structure with the viscoelastic shock absorber. The steel plate and the viscoelastic material are mechanically interlocked to form a simulated mortise and tenon structure, which provides high resistance to pull-out force and can achieve high energy dissipation compared to the flat interface of the traditional shock absorber. The operation of the traditional viscoelastic damper mainly relies on the plane interface between the steel plate and the viscoelastic material to transfer the shear load, while the simulated mortise and tenon structure shock absorber does not require chemical adhesion, providing a better mechanism for the transfer of shear loads. In addition, in the simulated mortise and tenon structure composed of the steel plate and the viscoelastic material, each mortise and tenon element is subject to the motion constraints of the surrounding adjacent elements, which allows the materials connecting different materials in a simulated mortise and tenon structure to work together, improving the overall performance of the shock absorber.

[0013] Furthermore, the viscoelastic material of the utility model is a 3D printing product, which can realize the diversification, rapidity and precision of the production of energy-consuming materials. Traditional rubber production is a subtractive manufacturing, which requires traditional tools, fixtures and rollers, which easily causes great waste of raw materials and rubber products. 3D printing technology is additive manufacturing, which can well control costs and reduce unnecessary waste. At the same time, based on the intelligent characteristics of 3D printing, the required target values ​​of dynamic parameters such as stiffness and damping of the viscoelastic shock absorber can be obtained by adjusting the design parameters in the software (size and shape of mortise and tenon components), thereby manufacturing a shock absorber with target performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the overall structure diagram of the utility model

[0015] Figure 2 This is the structure diagram of the vibration reduction element of the utility model

[0016] Figure 3 This is the assembly diagram of the vibration reduction element of the utility model

[0017] Figure 4 This is the 3D printed viscoelastic structure diagram of the utility model

[0018] Figure 5 The connection diagram of the upper connecting plate and the middle steel plate of the utility model

[0019] Figure 6 The connection diagram of the lower connecting plate and the left and right side steel plates of the utility model

[0020] In the figure: 1. Upper connecting plate; 2. Lower connecting plate; 3. Right steel plate; 4. Left steel plate; 5. Bolt hole; 6. 3D printed viscoelastic material; 7. Right-angle fixing plate; 8. Bolt; 9. Vibration damping element; 10. Middle steel plate; 11. Nut. DETAILED DESCRIPTION

[0021] The following will be combined with the accompanying drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. It should be noted that the description of these embodiments is used to help understand the utility model, but does not constitute a limitation of the utility model.

[0022] See also Figure 1-6 The utility model provides a technical solution: a 3D printed imitation mortise and tenon structure interlocking viscoelastic vibration damper, comprising an upper connecting plate (1), a lower connecting plate (2), a vibration damping element (9) and a right-angle fixing plate (7); the vibration damping element (9) is an imitation mortise and tenon structure, comprising a left steel plate (4), a right steel plate (3), a middle steel plate (10) and a 3D printed viscoelastic material (6); the 3D printed viscoelastic material (6) has two pieces, one of which is located between the left steel plate (4) and the middle steel plate (10), and the other is located between the left steel plate (4) and the middle steel plate (10). Located between the right steel plate (3) and the middle steel plate (10), the left steel plate (4), the right steel plate (3), the middle steel plate (10) and the 3D printed viscoelastic material (6) are connected by mechanical interlocking, a plurality of protruding tenons are arranged on both sides of the 3D printed viscoelastic material (6), a plurality of recessed mortises are arranged on one side of the left steel plate (4) and the right steel plate (3), and a plurality of recessed mortises are arranged on both sides of the middle steel plate (10), and the shapes of the tenons and the mortises are interlocked and the numbers are corresponding.

[0023] Specifically, the upper connecting plate (1) is fixedly connected to the middle steel plate (10) via a right-angle fixing plate (7), and the lower connecting plate (2) is fixedly connected to the left steel plate (4) and the right steel plate (3) respectively via bolts (8), and bolt holes (5) are provided on the lower bottom surfaces of the left steel plate (4) and the right steel plate (3), and bolt holes (5) are provided on both sides of the upper end of the middle steel plate (10).

[0024] Specifically, the 3D printed viscoelastic material (6) is made by 3D printing technology, and is formed by printing polyurethane material layer by layer through laser sintering. Furthermore, the right-angle fixing plate (7) is respectively connected to the middle steel plate (10) and the upper connecting plate (1) by bolts, and bolt holes are provided on two right-angle sides of the right-angle fixing plate (7).

[0025] The left steel plate (4), the right steel plate (3), the middle steel plate (10) and the 3D printed viscoelastic material (6) are connected by mechanical interlocking to form a mortise and tenon structure. When the upper connecting plate (1) is subjected to a vertical force, the middle steel plate (10) of the viscoelastic vibration damper is driven to move vertically, thereby causing the viscoelastic layer to undergo multiple deformations. Through multiple deformations, the viscoelastic layer converts part of the energy transmitted to the building into heat energy dissipation, and stores the other part in the form of displacement, thereby achieving the purpose of vibration reduction.

[0026] Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents. The shape of the 3D printed viscoelastic material is not limited to the form proposed herein, and the number of tenons and mortises is not limited to the number proposed herein. Other similar types of shock absorbers also fall within the scope of protection of the present invention.

Claims

1. A 3D printed imitation mortise and tenon structure interlocking viscoelastic vibration damper, characterized in that: The invention comprises an upper connecting plate (1), a lower connecting plate (2), a vibration-damping element (9) and a right-angle fixing plate (7); the vibration-damping element (9) is an imitation mortise and tenon structure, comprising a left steel plate (4), a right steel plate (3), a middle steel plate (10) and a 3D-printed viscoelastic material (6); the 3D-printed viscoelastic material (6) comprises two pieces, one piece is located between the left steel plate (4) and the middle steel plate (10), and the other piece is located between the right steel plate (3) and the middle steel plate (10); the left steel plate (4), the right steel plate (3), the middle steel plate (10) and the 3D-printed viscoelastic material (6) are connected by mechanical interlocking; the 3D-printed viscoelastic material (6) is made by 3D printing technology, and is provided with a plurality of protruding tenons on both sides; a plurality of recessed tenons are provided on one side of the left steel plate (4) and the right steel plate (3), and a plurality of recessed tenons are provided on both sides of the middle steel plate (10).

2. A 3D printed imitation mortise and tenon structure interlocking viscoelastic vibration damper according to claim 1, characterized in that: The upper connecting plate (1) is fixedly connected to the middle steel plate (10) via a right-angle fixing plate (7), and the lower connecting plate (2) is fixedly connected to the left steel plate (4) and the right steel plate (3) respectively via bolts (8).

3. A 3D printed imitation mortise and tenon structure interlocking viscoelastic vibration damper according to claim 1, characterized in that: Bolt holes (5) are arranged on the lower surfaces of the left steel plate (4) and the right steel plate (3), and bolt holes (5) are arranged on both sides of the upper end of the middle steel plate (10).

4. A 3D printed imitation mortise and tenon structure interlocking viscoelastic vibration absorber according to claim 1, characterized in that: The right-angle fixing plate (7) is respectively connected to the middle steel plate (10) and the upper connecting plate (1) by bolts (8), and bolt holes (5) are arranged on two right-angle sides of the right-angle fixing plate (7).

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