Self-induction type multi-dimensional anti-vibration protection device for bridge structure

Abstract

The bridge structure self-induction type multi-dimensional anti-vibration protection device comprises a lower mounting plate and an upper mounting plate, axial energy dissipation sleeves are arranged on the upper side of the lower mounting plate and the lower side of the upper mounting plate correspondingly, and a center energy dissipation shaft is arranged in the middle of the interior of each axial energy dissipation sleeve; a vulcanized rubber layer is arranged between the central energy consumption shaft and the axial energy consumption sleeve; a transmission shell is arranged at the free end of the axial energy consumption sleeve, a high-speed cavity and a low-speed cavity are formed in the transmission shell, a high-speed gear connected with the center energy consumption shaft is rotationally connected to the middle in the high-speed cavity, a low-speed gear is rotationally connected to the middle in the low-speed cavity, and the high-speed gear and the low-speed gear achieve transmission through a planetary gear. A rotating disc is arranged at the free end, extending out of the transmission shell, of the low-speed gear, rotating bases are arranged on the outer side of the rotating disc, and a damper is rotationally connected between the two rotating bases in a matched mode. On the basis of damping vibration resistance, a mechanism capable of dissipating energy in the axial direction is additionally arranged, multi-dimensional vibration resistance is achieved, and the anti-seismic performance of a bridge structure is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge engineering, and particularly to a self-inductive multi-dimensional anti-vibration protection device for bridge structures. Background Art

[0002] In modern bridge engineering, with the continuous increase in bridge spans and the increasing complexity of the environment, how to effectively improve the seismic performance of bridge structures has become one of the key concerns of engineers. Traditional bridge designs mainly focus on ensuring that the structure can withstand static and dynamic loads, such as dynamic loads caused by vehicle driving and wind forces. For natural disasters such as earthquakes, which are sudden and have great destructive power, traditional design methods often prove inadequate.

[0003] Early bridge shock absorption technologies mainly relied on enhancing the strength and stiffness of the bridge structure itself. For example, by increasing the use of reinforced concrete or using stronger materials to improve the overall stability of the bridge. However, although this method can resist the impact of vertical seismic waves to a certain extent, its vibration control effect in the horizontal direction is limited. Especially when facing strong earthquakes, its protective ability is significantly insufficient. In addition, simply relying on enhancing the structure itself also faces problems such as high costs and difficult construction.

[0004] To overcome the above problems, engineers have started to explore more intelligent and effective shock absorption strategies, including but not limited to the use of seismic isolation bearings, energy dissipation devices (such as dampers), and other technical means. The application of these technologies has greatly improved the bridge's resistance to seismic shocks, especially in dealing with vertical vibrations. However, it is worth noting that although existing bridge seismic structures can handle vertical vibrations well, in practical applications, it has been found that they do not provide sufficient and effective solutions to problems caused by lateral forces, such as horizontal vibrations caused by wind forces. Summary of the Invention

[0005] The purpose of the present invention is to provide a self-inductive multi-dimensional anti-vibration protection device for bridge structures. Based on damping anti-vibration, an axially energy-consuming mechanism is added to achieve multi-dimensional anti-vibration and effectively improve the seismic performance of bridge structures.

[0006] The above technical purpose of the present invention is achieved through the following technical solutions: A self-inductive multi-dimensional anti-vibration protection device for bridge structures includes a lower mounting plate and an upper mounting plate. Axially energy-consuming sleeves are provided on the upper side of the lower mounting plate and the lower side of the upper mounting plate. A central energy-consuming shaft is provided in the middle of each axially energy-consuming sleeve. A vulcanized rubber layer is provided between the outer side of each central energy-consuming shaft and the inner wall of the corresponding axially energy-consuming sleeve. A transmission housing is provided at the free end of each axial energy-dissipating sleeve. Each transmission housing is internally provided with a high-speed chamber close to the corresponding axial energy-dissipating sleeve and a low-speed chamber far from the corresponding axial energy-dissipating sleeve. In the middle of each high-speed chamber, a high-speed gear connected to the corresponding central energy-consuming shaft is rotatably connected. A plurality of large planet gears are meshed with the outer periphery of the corresponding high-speed gear in each high-speed chamber. Each large planet gear is connected to a small planet gear located in the corresponding low-speed chamber. The outer diameter of each large planet gear is larger than the outer diameter of the corresponding small planet gear. In the middle of each low-speed chamber, a low-speed gear meshing with the corresponding small planet gear is rotatably connected. The outer diameter of each low-speed gear is larger than the outer diameter of the corresponding high-speed gear. Each low-speed gear extends out of the free end of the corresponding transmission housing and is provided with a rotating disc. A rotating seat is arranged on the outer side of each rotating disc. A damper is rotatably connected between the two rotating seats.

[0007] By adopting the above technical solution, when the bridge vibrates in the vertical direction, the bridge moves up and down, driving the lower mounting plate and the upper mounting plate to move up and down. During this process, energy is dissipated through the damper. When vibrating in the horizontal direction, the bridge moves horizontally back and forth, driving the lower mounting plate and the upper mounting plate to move horizontally, causing the damper to drive the low-speed gear to rotate inside the transmission housing. The rotation of the low-speed gear is transmitted through the planetary gears, causing the high-speed gear to rotate through a larger angle. The high-speed gear drives the central energy-consuming shaft to rotate, causing the vulcanized rubber layer to deform and dissipate energy.

[0008] A further setting of the present invention is that: the damper includes a damping sleeve. One end of the damping sleeve is provided with a tail connection head rotatably connected to the corresponding rotating seat. The end of the damping sleeve far from the tail connection head is provided with a sealed sliding hole. A damping piston is slidably connected inside the damping sleeve. A plurality of damping holes are provided through the damping piston. One end of the damping piston is connected to a telescopic sliding shaft that extends out of the sealed sliding hole and is slidably connected to it in a sealed manner. The free end of the telescopic sliding shaft is provided with a head connection head rotatably connected to the corresponding rotating seat. Damping oil is provided inside the damping sleeve.

[0009] A further setting of the present invention is that: a secondary energy-dissipating sleeve is provided between each central energy-consuming shaft and the corresponding axial energy-dissipating sleeve. Both sides of each secondary energy-dissipating sleeve are vulcanized and connected to the corresponding vulcanized rubber layer.

[0010] A further setting of the present invention is that: the inner wall of each high-speed chamber is provided with a high-speed inner gear ring meshing with the corresponding large planet gear.

[0011] A further setting of the present invention is that: the inner wall of each low-speed chamber is provided with a low-speed inner gear ring meshing with the corresponding small planet gear.

[0012] A further setting of the present invention is that: a plurality of lower anchor columns are arranged downward on the lower side of the lower mounting plate, and a plurality of upper anchor columns are arranged upward on the upper side of the upper mounting plate.

[0013] In summary, the present invention has the following beneficial effects: First, on the basis of using the damper for vertical energy dissipation, the present invention performs axial energy dissipation through the central energy dissipation shaft and the vulcanized rubber layer in the axial energy dissipation sleeve. When the bridge undergoes horizontal vibration under the action of wind, it will drive the damper to rotate horizontally relative to the upper mounting plate and the lower mounting plate. At this time, horizontal energy dissipation can be achieved, realizing multi-dimensional vibration resistance and effectively improving the seismic performance of the bridge structure; Second, when performing energy dissipation and vibration reduction in the horizontal direction, through the transmission of the planetary gears, the rotation amplitude during vibration can be amplified, enabling the central energy dissipation shaft to rotate a larger angle to cooperate with the vulcanized rubber layer for energy dissipation, with better energy dissipation effect. At the same time, a secondary energy dissipation sleeve is provided in the middle, dividing the vulcanized rubber layer into inner and outer layers, which can cooperate with the rotation of the central energy dissipation shaft to achieve a greater degree of deformation for energy dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is used to show the central energy dissipation shaft, secondary energy dissipation sleeve and vulcanized rubber layer in the axial energy dissipation sleeve; Figure 3 is a partial cross-sectional view for showing the gears inside the transmission housing; Figure 4 is a partial cross-sectional view for showing the internal structure of the transmission housing; Figure 5 is a partial cross-sectional view for showing the internal structure of the damper.

[0015] In the figure: 1, lower mounting plate; 11, lower anchor column; 2, upper mounting plate; 21, upper anchor column; 3, axial energy dissipation sleeve; 31, central energy dissipation shaft; 32, secondary energy dissipation sleeve; 33, vulcanized rubber layer; 4, transmission housing; 41, high-speed chamber; 42, low-speed chamber; 43, high-speed gear; 44, large planetary gear; 45, high-speed internal gear ring; 46, small planetary gear; 47, low-speed internal gear ring; 48, low-speed gear; 5, rotating disc; 51, rotating seat; 6, damper sleeve; 61, tail connecting head; 7, damper piston; 71, damper hole; 72, telescopic sliding shaft; 73, head connecting head. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The following further describes the present invention in detail with reference to the accompanying drawings.

[0017] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It 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 of the present invention.

[0018] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0019] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "connected", and "connected" 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 mechanical connection, a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two elements. 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 circumstances.

[0020] Example, refer to Figures 1-5 , a self-inductive multi-dimensional anti-vibration protection device for bridge structures, including a lower mounting plate 1 and an upper mounting plate 2. The lower mounting plate 1 is installed at the upper end of the bridge pier, and the upper mounting plate 2 is installed at the lower end of the bridge deck. A plurality of lower anchor columns 11 are arranged downward on the lower side of the lower mounting plate 1, and a plurality of upper anchor columns 21 are arranged upward on the upper side of the upper mounting plate 2. An axial energy dissipation sleeve 3 is arranged on the upper side of the lower mounting plate 1 and the lower side of the upper mounting plate 2. A central energy dissipation shaft 31 is arranged in the middle of each axial energy dissipation sleeve 3. A secondary energy dissipation sleeve 32 is arranged between each central energy dissipation shaft 31 and the corresponding axial energy dissipation sleeve 3. Sulfur rubber layers 33 are arranged on both sides of each secondary energy dissipation sleeve 32. The outer wall of each central energy dissipation shaft 31, the inner wall of each axial energy dissipation sleeve 3, and both sides of each secondary energy dissipation sleeve 32 are vulcanized and connected together with the sulfur rubber layer 33. When the central energy dissipation shaft 31 rotates, energy can be dissipated through the deformation of the sulfur rubber layer 33. And the secondary energy dissipation sleeve 32 is located in the middle of the sulfur rubber layer 33, which can further increase the deformation ability of the sulfur rubber layer 33 and the energy dissipation ability.

[0021] A transmission housing 4 is provided at the free end of each axial energy-dissipating sleeve 3. Each transmission housing 4 is internally provided with a high-speed chamber 41 close to the corresponding axial energy-dissipating sleeve 3 and a low-speed chamber 42 away from the corresponding axial energy-dissipating sleeve 3. In the middle of each high-speed chamber 41, a high-speed gear 43 connected to the corresponding central energy-dissipating shaft 31 is rotatably connected. Three large planetary gears 44 are meshed on the outer periphery of the corresponding high-speed gear 43 in each high-speed chamber 41. A high-speed internal gear ring 45 meshing with the corresponding large planetary gear 44 is provided on the inner wall of each high-speed chamber 41. Each large planetary gear 44 is connected to a small planetary gear 46 located in the corresponding low-speed chamber 42. The outer diameter of each large planetary gear 44 is larger than the outer diameter of the corresponding small planetary gear 46. A low-speed internal gear ring 47 meshing with the corresponding small planetary gear 46 is provided on the inner wall of each low-speed chamber 42. In the middle of each low-speed chamber 42, a low-speed gear 48 meshing with the corresponding small planetary gear 46 is rotatably connected. The outer diameter of each low-speed gear 48 is larger than the outer diameter of the corresponding high-speed gear 43. Through the connection of the planetary gears, the rotational speed of the high-speed gear 43 is higher than that of the low-speed gear 48.

[0022] A rotating disk 5 is provided at the free end of each low-speed gear 48 extending out of the corresponding transmission housing 4. A rotating seat 51 is provided on the outer side of each rotating disk 5. A damper is rotatably connected between the two rotating seats 51. The damper includes a damping sleeve 6. One end of the damping sleeve 6 is provided with a tail connection head 61 rotatably connected to the corresponding rotating seat 51. A sealing sliding hole (not shown in the figure) is opened at the end of the damping sleeve 6 away from the tail connection head 61. A damping piston 7 is slidably connected in the damping sleeve 6. A plurality of damping holes 71 are opened through the damping piston 7. One end of the damping piston 7 is connected to a telescopic sliding shaft 72 extending out of the sealing sliding hole and sealingly slidingly connected thereto. A head connection head 73 rotatably connected to the corresponding rotating seat 51 is provided at the free end of the telescopic sliding shaft 72. Damping oil is provided in the damping sleeve 6. When the telescopic sliding shaft 72 expands and contracts to drive the damping piston 7 to slide in the damping sleeve 6, the damping oil dissipates energy through the damping holes 71 on the damping piston 7.

[0023] Working principle: When the bridge vibrates in the vertical direction, the bridge moves up and down, driving the lower mounting plate 1 and the upper mounting plate 2 to move up and down. During this process, the telescopic sliding shaft 72 is pushed to expand and contract back and forth, driving the damping piston 7 to slide in the damping sleeve 6, so that the damping oil dissipates energy through the damping holes 71 on the damping piston 7. When horizontal vibration occurs, the bridge horizontally moves back and forth, driving the lower mounting plate 1 and the upper mounting plate 2 to undergo horizontal displacement, causing the damper to drive the low-speed gear 48 to rotate within the transmission housing 4. The rotation of the low-speed gear 48 is transmitted through the planetary gear system, causing the high-speed gear 43 to rotate by a larger angle. The high-speed gear 43 drives the central energy-consuming shaft 31 to rotate, causing the vulcanized rubber layer 33 to deform and consume energy.

[0024] This specific embodiment is only an explanation of the present invention and is not a limitation thereof. After reading this specification, those skilled in the art may make modifications to this embodiment without creative contributions as needed, but as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A self - inductive multi - dimensional anti - vibration protection device for bridge structures, comprising a lower mounting plate (1) and an upper mounting plate (2), characterized in that: Axial energy dissipating sleeves (3) are provided on the upper side of the lower mounting plate (1) and the lower side of the upper mounting plate (2). In the middle of each axial energy dissipating sleeve (3), a central energy dissipating shaft (31) is provided. A vulcanized rubber layer (33) is provided between the outer side of each central energy dissipating shaft (31) and the inner wall of the corresponding axial energy dissipating sleeve (3). At the free end of each axial energy dissipating sleeve (3), a transmission housing (4) is provided. Inside each transmission housing (4), a high-speed chamber (41) close to the corresponding axial energy dissipating sleeve (3) and a low-speed chamber (42) far from the corresponding axial energy dissipating sleeve (3) are provided. In the middle of each high-speed chamber (41), a high-speed gear (43) connected to the corresponding central energy dissipating shaft (31) is rotatably connected. Inside each high-speed chamber (41), a plurality of large planetary gears (44) are meshed with the outer circumference of the corresponding high-speed gear (43). Each large planetary gear (44) is connected to a small planetary gear (46) located in the corresponding low-speed chamber (42). The outer diameter of each large planetary gear (44) is larger than the outer diameter of the corresponding small planetary gear (46). In the middle of each low-speed chamber (42), a low-speed gear (48) meshed with the corresponding small planetary gear (46) is rotatably connected. The outer diameter of each low-speed gear (48) is larger than the outer diameter of the corresponding high-speed gear (43). The free end of each low-speed gear (48) extends out of the corresponding transmission housing (4) and is provided with a rotating disc (5). A rotating seat (51) is provided on the outer side of each rotating disc (5). A damper is rotatably connected between the two rotating seats (51).

2. The self-inductive multi-dimensional anti-vibration protection device for a bridge structure according to claim 1, wherein: The damper includes a damper sleeve (6). One end of the damper sleeve (6) is provided with a tail connecting head (61) rotatably connected to the corresponding rotating seat (51). A sealing sliding hole is opened at the end of the damper sleeve (6) far from the tail connecting head (61). A damper piston (7) is slidably connected in the damper sleeve (6). A plurality of damper holes (71) are provided through the damper piston (7). One end of the damper piston (7) is connected to a telescopic sliding shaft (72) that extends out of the sealing sliding hole and is slidably connected to it in a sealed manner. The free end of the telescopic sliding shaft (72) is provided with a head connecting head (73) rotatably connected to the corresponding rotating seat (51). Damper oil is provided in the damper sleeve (6).

3. A self - inductive multi - dimensional anti - vibration protection device for a bridge structure according to claim 1, wherein: A secondary energy dissipating sleeve (32) is provided between each central energy dissipating shaft (31) and the corresponding axial energy dissipating sleeve (3). Both sides of each secondary energy dissipating sleeve (32) are vulcanized and connected to the corresponding vulcanized rubber layer (33).

4. A self - inductive multi - dimensional anti - vibration protection device for a bridge structure according to claim 1, characterized in that: The inner wall of each high-speed chamber (41) is provided with a high-speed internal gear ring (45) meshed with the corresponding large planetary gear (44).

5. A self - inductive multi - dimensional anti - vibration protection device for a bridge structure according to claim 1, characterized in that: The inner wall of each low-speed chamber (42) is provided with a low-speed internal gear ring (47) meshed with the corresponding small planetary gear (46).

6. The self - inductive multi - dimensional anti - vibration protection device for a bridge structure according to claim 1, characterized in that: A plurality of lower anchor columns (11) are provided downward on the lower side of the lower mounting plate (1), and a plurality of upper anchor columns (21) are provided upward on the upper side of the upper mounting plate (2).

Images