A cross-shaped flexible plate laminated structure damping device

Abstract

The application belongs to the technical field of structural vibration reduction design, and particularly relates to a cross-shaped flexible plate laminated structure vibration reduction device. The device comprises fixed partition plates, fixed flexible plates, movable flexible plates and movable partition plates; the fixed partition plates and the fixed flexible plates are spaced and laminated to form a cylinder structure connected with a first vibration reduction object, the movable flexible plates and the movable partition plates are spaced and laminated to form a column structure connected with a second vibration reduction object, and the column structure is located in the cylinder structure; the movable flexible plates can be inserted between two adjacent fixed flexible plates, and the fixed flexible plates can be inserted between two adjacent movable flexible plates, wherein the four end regions of the cross-shaped laminated region of the fixed flexible plates and the movable flexible plates are cross-shaped. The application utilizes the extrusion friction of the flexible plate laminated structure to improve the damping vibration reduction effect, and simultaneously provides sufficient displacement stroke to absorb vibration energy.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of structural vibration reduction design, and particularly relates to a cross-shaped flexible plate laminated structure vibration reduction device. BACKGROUND

[0002] Vibration is a common problem encountered by engineering structures, which usually causes the function of the structure to decrease, shortens the service life, and even causes the structure to be damaged, so many structures must consider vibration reduction design or use buffers during design. There are many vibration reduction methods and buffer devices, most of which use damping materials to dissipate energy or hydraulic dampers to absorb vibration energy. The use of buffers requires the selection of appropriate size and buffer performance parameters according to specific working conditions, which not only increases the additional weight, but also often fails to achieve ideal vibration reduction effect; the use of damping materials requires the consideration of specific structural arrangement, and the weight cost is also relatively large. SUMMARY

[0003] In order to solve the above problems, the application provides a cross-shaped flexible plate laminated structure vibration reduction device, which mainly comprises a fixed partition plate, a fixed flexible plate, a movable flexible plate and a movable partition plate; the fixed partition plate and the fixed flexible plate are stacked in space and form a cylinder structure connected with a first vibration reduction object, the movable flexible plate and the movable partition plate are stacked in space and form a column structure connected with a second vibration reduction object, and the column structure is located in the cylinder structure.

[0004] Preferably, the inner diameter of the fixed partition plate is larger than the inner diameter of the fixed flexible plate, the outer diameter of the movable flexible plate is larger than the outer diameter of the movable partition plate, the movable flexible plate and the fixed partition plate are in the same level in the axial direction, and the movable flexible plate can be inserted between two adjacent fixed flexible plates; similarly, the fixed flexible plate and the movable partition plate are in the same level in the axial direction, and the fixed flexible plate can be inserted between two adjacent movable flexible plates, wherein the area where the fixed flexible plate and the movable flexible plate are laminated is four end areas in cross shape.

[0005] Preferably, the fixed partition plate and the fixed flexible plate are connected by eight first studs arranged uniformly in the circumferential direction.

[0006] Preferably, the first studs are connected with a fixed support seat and a circular pressing plate at both ends of the whole stacked by the fixed partition plate and the fixed flexible plate, respectively, the fixed support seat is further connected with a fixed connection joint, and the fixed connection joint is used to be connected with the first vibration reduction object.

[0007] Preferably, the fixed support seat is connected with the fixed connection joint through a plurality of bolts arranged in the circumferential direction.

[0008] Preferably, a pad is arranged between the fixed support seat and the fixed flexible plate thereon.

[0009] Preferably, the active flexible plate and the active partition plate are connected through the centrally located second stud.

[0010] Preferably, the second stud is connected with a cross-shaped pressing plate at both ends of the stacked active flexible plate and the active partition plate, and the second stud is also connected with an active connection joint for connecting with the second damping object.

[0011] Preferably, one end of the active connection joint has a blind hole with internal threads to adapt to the connection of the second stud.

[0012] The present application improves the energy absorption and buffering effect of the flexible damping device. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a schematic diagram of the overall structure of a preferred embodiment of the cross-shaped flexible plate stack structure damping device of the present application.

[0014] Figure 2 is a schematic diagram of the fixed flexible plate structure of the embodiment shown in the present application. Figure 1

[0015] Figure 3 is a schematic diagram of the fixed partition plate structure of the embodiment shown in the present application. Figure 1

[0016] Figure 4 is a schematic diagram of the active flexible plate structure of the embodiment shown in the present application. Figure 1

[0017] Figure 5 is a schematic diagram of the active partition plate structure of the embodiment shown in the present application. Figure 1

[0018] Wherein, 1 - fixed support seat, 2 - pad, 3 - round pressing plate, 4 - fixed partition plate, 5 - fixed flexible plate, 6 - fixed connection joint, 7 - active connection joint, 8 - active flexible plate, 9 - active partition plate, 10 - second stud, 11 - cross-shaped pressing plate, 12 - first stud. DETAILED DESCRIPTION

[0019] ​​​​In order to make the purposes, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application. In the drawings, identical or similar labels represent identical or similar elements or elements with identical or similar functions throughout. The described embodiments are part of the embodiments of the present application, rather than all the embodiments of the present application. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application. The embodiments of the present application will be described in detail below with reference to the drawings.

[0020] The present application provides a cross-shaped flexible plate laminated structure vibration reduction device, as shown in the drawings, mainly comprising a fixed system partition plate 4, a fixed system flexible plate 5, a movable system flexible plate 8 and a movable system partition plate 9; the fixed system partition plate 4 and the fixed system flexible plate 5 are stacked with a space therebetween, forming a cylinder structure connected with a first vibration reduction object, the movable system flexible plate 8 and the movable system partition plate 9 are stacked with a space therebetween, forming a column structure connected with a second vibration reduction object, and the column structure is located in the cylinder structure; Figure 1

[0021] Among them, the inner diameter of the fixed system partition plate 4 is greater than the inner diameter of the fixed system flexible plate 5, the outer diameter of the movable system flexible plate 8 is greater than the outer diameter of the movable system partition plate 9, the movable system flexible plate 8 and the fixed system partition plate 4 are in the same level in the axial direction, and the movable system flexible plate 8 can be inserted between two adjacent fixed system flexible plates 5, and similarly, the fixed system flexible plate 5 and the movable system partition plate 9 are in the same level in the axial direction, and the fixed system flexible plate 5 can be inserted between two adjacent movable system flexible plates 8, wherein the area where the fixed system flexible plate 5 and the movable system flexible plate 8 are laminated is the four end areas of the cross shape.

[0022] The present application is used for vibration reduction design between two opposite structural members, and the two structural members are represented by a first vibration reduction object and a second vibration reduction object respectively. Generally, the first vibration reduction object is a fixed structure connected with the fixed system structure of the vibration reduction device, and the second vibration reduction object is an opposite movable structure connected with the movable system structure of the vibration reduction device.

[0023] ​Generally speaking, the energy absorption process is accompanied by vibration displacement, and the vibration energy can be dissipated through more vibration cycles. Therefore, the damping energy absorption in the vibration process is matched with the vibration displacement process to obtain better buffering and energy absorption effect. In the application, a cross-shaped flexible plate laminated structure is used for vibration reduction design, and the flexible plate laminates are engaged and connected. The fixed system flexible plate of the fixed system structure and the movable system flexible plate of the movable system structure are staggered and overlapped, and are extruded with each other. The movable system flexible plate of the movable system structure and the fixed system partition plate of the fixed system structure are at the same plane height. When the movable system structure moves axially, the movable system flexible plate is bent and deformed. The fixed system flexible plate and the movable system flexible plate are extruded and rubbed. The force is transmitted through the plate surface contact. The greater the axial relative displacement, the greater the damping force, thereby improving the energy absorption and buffering effect of the flexible vibration reduction device.

[0024] Reference Figure 2 The fixed system flexible plate 5 has four cantilever arms extending inward, which are laminated with the four cantilever arms of the movable system flexible plate 8 shown in Figure 4 The outer diameter of the movable system flexible plate 8 (i.e. the length L1 shown in Figure 4 The outer diameter of the movable system flexible plate 8 (i.e. the length L1 shown in Figure 3 The outer diameter of the movable system flexible plate 8 (i.e. the length L1 shown in Figure 5 The outer diameter of the movable system flexible plate 8 (i.e. the length L1 shown in Figure 5 The outer diameter of the movable system flexible plate 8 (i.e. the length L1 shown in Figure 2 The outer diameter of the movable system flexible plate 8 (i.e. the length L1 shown in

[0025] It can be understood that the effective cantilever length of the fixed system flexible plate or the movable system flexible plate and the number of flexible plate laminates also directly affect the size of the working load; the change of the axial displacement also relates to the contact area and extrusion force between the flexible plates, and then affects the size of the damping force. The geometric size, material properties, surface quality and other factors of the flexible plate will affect the vibration reduction effect, and the design parameters of the vibration reduction device need to be determined according to the specific working load range and movement stroke.

[0026] In the embodiment, the thickness of the flexible plate and the partition plate is nominally the same, and actually the partition plate is slightly thicker than the flexible plate, so that there is a little gap between the fixed system flexible plate and the movable system flexible plate to ensure the smoothness of the movement.

[0027] In some optional embodiments, the fixed system partition plate 4 and the fixed system flexible plate 5 are connected through the eight circumferentially arranged first studs 12.

[0028] In some alternative embodiments, the first stud 12 is connected to the fixed system support base 1 and the circular pressing plate 3 at both ends of the whole formed by the fixed system partition plate 4 and the fixed system flexible plate 5 stacked together, and the fixed system support base 1 is further connected to the fixed system connecting joint 6, which is used to connect to the first damping object.

[0029] In some alternative embodiments, the fixed system support base 1 is connected to the fixed system connecting joint 6 through a plurality of circumferentially arranged bolts.

[0030] In some alternative embodiments, a spacer 2 is arranged between the fixed system support base 1 and the fixed system flexible plate 5 thereon.

[0031] In this embodiment, the spacer 2 is used to ensure that the movable system structure has sufficient movement space. Specifically, the thickness of the spacer 2 is determined by considering the initial displacement and the vibration displacement, and sufficient space is left for the cross-shaped pressing plate 11 and the end of the second stud 10 of the movable system structure.

[0032] In some alternative embodiments, the movable system flexible plate 8 and the movable system partition plate 9 are connected through the centrally located second stud 10.

[0033] In some alternative embodiments, the second stud 10 is connected to a cross-shaped pressing plate 11 at both ends of the whole formed by the movable system flexible plate 8 and the movable system partition plate 9 stacked together, and the second stud 10 is further connected to the movable system connecting joint 7, which is used to connect to the second damping object.

[0034] In some alternative embodiments, one end of the movable system connecting joint 7 has a blind hole with internal threads to adapt to the connection of the second stud 10.

[0035] The cross-shaped flexible plate laminated structure vibration damping device of the present application is assembled as follows: firstly, eight first studs 12 are passed through the fixed system support seat 1, then the cushion block 2 is placed on the fixed system support seat 1 along the first stud 12, and the first fixed system flexible plate 5 is placed on the cushion block 2; then the second stud 10 and the cross-shaped pressing plate 11 of the movable system structure are placed in the middle empty position of the fixed system flexible plate 5, the upper surface of the cross-shaped pressing plate 11 is at the same height as the upper surface of the first fixed system flexible plate 5, the vertical axis is aligned, then the first movable system flexible plate 8 is placed on the cross-shaped pressing plate 11 along the second stud 10, the first movable system flexible plate 8 is also pressed on the upper surface of the first fixed system flexible plate 5, then the fixed system partition plate 4 is placed on the first fixed system flexible plate 5, at this time, the fixed system partition plate 4 is at the same height as the movable system flexible plate 8; the second fixed system flexible plate 5 and the movable system partition plate 9 are placed on it, then the movable system flexible plate 8 and the fixed system partition plate 4 are placed; the fixed system flexible plate and the movable system flexible plate are alternately and repeatedly stacked in this way, and the uppermost is the fixed system flexible plate 5; then the circular pressing plate 3 is used to press tightly above the fixed system structure, the cross-shaped pressing plate 11 is used to press tightly above the movable system structure, and the fixed system structure and the movable system structure are pressed tightly through the nuts of the first stud 12 and the second stud 10. Finally, the fixed system structure is connected with the first external vibration damping object through the fixed system connecting joint 6, and the movable system structure is connected with the second external vibration damping object through the movable system connecting joint 7.

[0036] The present application utilizes the extrusion friction of the flexible plate laminated structure to improve the damping effect and provide sufficient displacement stroke to absorb vibration energy.

[0037] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any changes or replacements that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A vibration damping device with a cross-shaped flexible plate laminate structure, characterized in that, The fixed partition plate (4), the fixed flexible plate (5), the movable flexible plate (8) and the movable partition plate (9) are included; the fixed partition plate (4) and the fixed flexible plate (5) are stacked in space, forming a cylinder structure connected with the first damping object, the movable flexible plate (8) and the movable partition plate (9) are stacked in space, forming a column structure connected with the second damping object, and the column structure is located in the cylinder structure; Wherein, the inner diameter of the fixed partition plate (4) is greater than the inner diameter of the fixed flexible plate (5), the outer diameter of the movable flexible plate (8) is greater than the outer diameter of the movable partition plate (9), the movable flexible plate (8) and the fixed partition plate (4) are in the same level in the axial direction, and the movable flexible plate (8) can be inserted between two adjacent fixed flexible plates (5), and the fixed flexible plate (5) and the movable partition plate (9) are in the same level in the axial direction, and the fixed flexible plate (5) can be inserted between two adjacent movable flexible plates (8), wherein the area of the fixed flexible plate (5) and the movable flexible plate (8) is the cross-shaped four end area.

2. The cross-shaped flexible plate stack structure damper according to claim 1, wherein The fixed partition plate (4) and the fixed flexible plate (5) are connected by eight first studs (12) arranged uniformly in the circumferential direction.

3. The cross-shaped flexible plate stack structure damper according to claim 2, wherein The first stud (12) is connected with the fixed support seat (1) and the circular pressing plate (3) at both ends of the whole stacked by the fixed partition plate (4) and the fixed flexible plate (5), and the fixed support seat (1) is also connected with the fixed connection joint (6), which is used for connecting with the first damping object.

4. The cross-shaped flexible plate stack structure damper according to claim 3, wherein The fixed support seat (1) is connected with the fixed connection joint (6) through a plurality of bolts arranged in the circumferential direction.

5. The cross-shaped flexible plate stack structure damper according to claim 3, wherein The fixed support seat (1) and the fixed flexible plate (5) thereon are provided with a pad (2).

6. The cross-shaped flexible plate stack structure damper according to claim 1, wherein The movable flexible plate (8) and the movable partition plate (9) are connected by a second stud (10) located in the center.

7. The cross-shaped flexible plate stack structure damper according to claim 6, wherein The second stud (10) is connected with a cross-shaped pressing plate (11) at both ends of the whole stacked by the movable flexible plate (8) and the movable partition plate (9), and the second stud (10) is also connected with the movable connection joint (7), which is used for connecting with the second damping object.

8. The cross-shaped flexible plate stack structure damper according to claim 7, wherein One end of the movable connection joint (7) has a blind hole with internal threads to adapt to the connection of the second stud (10).

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