A cornering friction damping device for optimizing the effect of acceleration control

Abstract

The application relates to a damping device with adjustable damping and stable output for optimizing acceleration control effect, belonging to the technical field of structural vibration control. The device comprises a shell, a one-way bearing, a rack and pinion device, an energy dissipation component, a transmission shaft and a disc brake connecting piece. The one-way bearing is composed of two one-way bearings with different working directions. The energy dissipation component is mainly composed of a disc brake pad and a disc brake. The rack and pinion device comprises two bevel gears and a bevel gear rack. The end of the bevel gear rack is provided with a threaded hole connected with a linear driving shaft. The side of the bevel gear rack opposite to the bevel gear is provided with a rack limiter. The damping device has the advantages of adjustable damping and stable output. Two damping units are respectively provided with one-way bearings with different working directions, so that the two damping units can independently work in the loading and unloading processes, and damping forces with different sizes can be provided.

Description

Technical Field

[0001] This invention relates to a friction damping device, and more particularly to a chamfered friction damping device for optimizing acceleration control, belonging to the field of structural vibration control technology. Background Technology

[0002] Traditional seismic design methods mainly resist earthquakes by increasing the strength and stiffness of the structure, such as by using higher strength materials or increasing the cross-sectional area of ​​the structure, in order to reduce the displacement response of the structure. However, this also increases the seismic force and reduces the ductility of the structure, resulting in higher costs and poorer seismic performance.

[0003] Energy dissipation and vibration reduction technology typically refers to adding energy dissipation and vibration reduction devices (energy absorbers) to building structures. These devices provide additional damping to the main structure through deformation and dissipate the seismic energy transmitted into the structure, thereby reducing the structure's seismic response. However, traditional displacement-type damping devices, such as friction dampers and metal dampers, while providing damping, also increase the additional stiffness of the structure. The latter, to some extent, increases the structure's seismic response, making it difficult to achieve satisfactory vibration reduction effects.

[0004] To address the limitations of such devices in terms of vibration reduction performance, there is an urgent need to develop a new damping device to improve the seismic performance of traditional displacement dampers. Summary of the Invention

[0005] To address the aforementioned deficiencies in the existing technology, this invention proposes a chamfered friction damping device for optimizing acceleration control performance.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A chamfered friction damping device for optimizing acceleration control includes a housing, a one-way bearing, a geared track device, an energy-dissipating component, a drive shaft, and a disc brake connector.

[0008] The one-way bearing consists of two one-way bearings with different working directions. The one-way bearing and the disc brake connector are connected to the front and rear panels of the housing through the drive shaft and the bushing. The one-way bearing and the disc brake connector are arranged coaxially and connected by a flat key in the keyway.

[0009] The energy-consuming component mainly consists of disc brake pads and disc brake unit; the disc brake pads are connected to the bottom end of the disc brake connector by bolts; the disc brake unit is connected to the bottom plate and top plate of the outer casing by a brake fixing plate;

[0010] The gear rack device includes two helical gears and one helical rack. The two helical gears are arranged on the same side of the helical rack. Each helical gear is coaxially arranged with its corresponding one-way bearing and connected by a flat key in the keyway. The end of the helical rack is provided with a threaded hole connected to a linear drive shaft. The linear drive shaft is connected to the housing through a flange linear bearing.

[0011] A rack limiter is provided on the side of the helical rack opposite to the helical gear to restrict the movement of the helical rack outside the working direction.

[0012] Furthermore, the energy-consuming component is connected to the drive shaft via the disc brake connector, and the one-way bearing is connected to the disc brake connector via a flat key, which is used to restrict the coaxial rotation of the one-way bearing and the disc brake connector; the helical gear is connected to the one-way bearing via a flat key, which is used to restrict the coaxial rotation of the one-way bearing and the helical gear; the above together constitute the damping unit of the friction damping device.

[0013] Furthermore, the one-way bearings of the two damping units are set to opposite working directions; the disc brake connector is connected to the drive shaft via the flat key; the one-way bearing is used to limit the working direction of the damping unit.

[0014] Furthermore, both ends of the drive shaft are connected to the housing via bushings to restrict the rotation of the drive shaft; both ends of the disc brake connector are provided with anti-reverse rings to restrict the movement of the helical gear relative to the drive shaft.

[0015] Furthermore, the disc brake pads are positioned in the middle of the disc brake friction pads to ensure stable force output of the damping device during operation.

[0016] Furthermore, the lengths and distances of the helical gears and helical racks satisfy the following relationship: L = l0 + 2 × d; L represents the length of the helical rack, l0 represents the distance between the two helical gears, and d is the displacement. Due to the presence of the one-way bearing, only one damping unit works in each direction of motion. When the displacement of the helical rack is greater than d, the helical rack disengages from one helical gear, and both damping units cease operation, thus achieving the purpose of angle chamfering.

[0017] Furthermore, the helical gear and the helical rack are both located in the same plane.

[0018] Furthermore, the rack limiter includes a bearing, a drive shaft, and anti-reverse rings. Anti-reverse rings are provided on both sides of the bearing to fix it at the center position of the drive shaft and restrict the movement of the bearing relative to the drive shaft. The drive shaft is fixed between the front and rear panels of the housing by bushings at both ends to restrict the rotation of the drive shaft relative to the housing.

[0019] Furthermore, each of the brake mounting plates includes a left brake mounting plate and a right brake mounting plate.

[0020] An application of a chamfered friction damping device, which employs the aforementioned chamfered friction damping device for optimizing acceleration control, is used as a whole in the field of vibration control.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] This invention provides a chamfered friction damping device, comprising a housing, a one-way bearing, a geared track device, an energy-dissipating component, a drive shaft, and a disc brake connector, among other key components. The chamfered friction damping device has the following advantages:

[0023] 1. The angle characteristic of the damping device is mainly controlled by setting the relationship between the spacing of the energy-consuming components and the length of the rack, thereby controlling the meshing and disengagement positions of the gear and rack, which can achieve the purpose of temporarily disabling the damping device at a specific position;

[0024] 2. The damping part of the damping device is mainly generated by the disc brake friction system. The movement of the linkage arm of the disc brake is controlled by the length of the steel wire rope in the cable arm, thereby controlling the friction between the friction plate and the disc brake plate to dissipate energy. The damping device achieved by this method has the advantages of adjustable damping and stable output.

[0025] 3. The damping device uses two damping units with unidirectional bearings in different working directions, which can enable the two damping units to work independently during loading and unloading, providing damping forces of different magnitudes. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the chamfered friction damping device provided in this application from one perspective in one embodiment (hiding the front panel and top panel of the outer casing).

[0027] Figure 2 This is a right-view perspective structural diagram of the chamfered friction damping device provided in this application in one embodiment (hiding the front panel and side panels of the outer casing);

[0028] Figure 3 This is a schematic diagram of the structure of the helical rack, linear drive shaft, rack limiter (drive shaft, bearing and anti-reverse ring) and flange linear bearing of the angle friction damping device provided in this application in one embodiment;

[0029] Figure 4 An exploded view of the disc brake friction damping unit of the chamfered friction damping device provided in this application in one embodiment;

[0030] Figure 5This is a schematic diagram of the helical rack and damping unit structure of the chamfered friction damping device provided in this application in one embodiment;

[0031] Figure 6 The result of a hysteretic loading test of the chamfered friction damping device provided in this application under constant loading period conditions with a chamfered displacement of 15 mm is shown in one embodiment.

[0032] Figure 7 The result of a hysteretic loading test of the chamfered friction damping device provided in this application under constant loading period conditions with a chamfered displacement of 25 mm is shown in one embodiment.

[0033] Figure label:

[0034] 1. Housing; 2. Disc brake pad; 3. Helical gear; 4. One-way bearing; 5. Disc brake connector; 6. Bushing; 7. Helical rack; 8. Bearing; 9. Left brake mounting plate; 10. Right brake mounting plate; 11. Disc brake unit; 12. Flange linear bearing; 13. Linear drive shaft; 14. Drive shaft; 15. Flat key; 16. Anti-roll ring. Detailed Implementation

[0035] In the description of this application: unless otherwise stated, "a plurality of" means two or more. The terms "first," "second," "third," etc., in this application are intended to distinguish the objects referred to and do not have any special meaning in terms of technical connotation (e.g., they should not be construed as an emphasis on importance or order). Expressions such as "including," "comprising," and "having" also mean "not limited to" (certain units, components, materials, steps, etc.).

[0036] The terms used in this application, such as "upper," "lower," "left," "right," and "middle," are generally used to facilitate intuitive understanding by referring to the accompanying drawings, and are not absolute limitations on the positional relationships in the actual product. Changes in these relative positional relationships, without departing from the technical concept disclosed in this application, should also be considered within the scope of this application.

[0037] Example 1

[0038] See Figure 1-5 The present embodiment of a chamfered friction damping device for optimizing acceleration control includes a housing 1, a one-way bearing 4, a geared device, an energy-consuming component, a drive shaft 14, and a disc brake connector 5.

[0039] The one-way bearing 4 consists of two one-way bearings with different working directions. The one-way bearing 4 and the disc brake connector 5 are connected to the front and rear panels of the housing 1 through the drive shaft 14 and the bushing. The one-way bearing 4 and the disc brake connector 5 are arranged coaxially and connected by the flat key 15 in the keyway.

[0040] like Figure 4 As shown, the energy dissipation component mainly consists of disc brake pads 2 and disc brake unit 11. The disc brake pads 2 are bolted to the bottom end of the disc brake connector 5. The disc brake unit 11 is connected to the bottom plate and top plate of the housing 1 via brake fixing plates, which include a left brake fixing plate 9 and a right brake fixing plate 10. The energy dissipation component is connected to the drive shaft 14 via the disc brake connector 5, and the one-way bearing 4 is connected to the disc brake connector 5 via a flat key 15, which restricts the coaxial rotation of the one-way bearing 4 and the disc brake connector 5. The disc brake pads 2 are positioned in the middle of the friction pads of the disc brake unit 11 to achieve stable power output of the damping device during operation.

[0041] The helical gear 3 is connected to the one-way bearing 4 via a key 15, which restricts the coaxial rotation of the one-way bearing 4 and the helical gear 3. Together, these form the damping unit of the friction damping device. Both ends of the drive shaft 14 are connected to the housing 1 via bushings 6, which restrict the rotation of the drive shaft 14. Both ends of the disc brake connector 5 are equipped with anti-reverse rings 16 to restrict the movement of the helical gear 3 relative to the drive shaft 14.

[0042] The one-way bearings 4 of the two damping units are configured to operate in opposite directions. The disc brake connector 5 is connected to the drive shaft 14 via a flat key 15. The one-way bearings 4 are used to limit the operating direction of the damping units.

[0043] like Figure 1-3 As shown in Figure 5, the rack and pinion assembly includes two helical gears 3 and one helical rack 7. The two helical gears 3 are located on the same side of the helical rack 7. Furthermore, the helical gears 7 and the helical rack 4 are located in the same plane. Each helical gear 3 is coaxially arranged with its corresponding one-way bearing 4 and connected by a flat key 15 in a keyway. The end of the helical rack 7 is provided with a threaded hole that connects to a linear drive shaft 13. The linear drive shaft 13 is connected to the housing 1 through a flange linear bearing 12. A rack limiter is provided on the side of the helical rack 7 opposite to the helical gears 3 to limit the movement of the helical rack 4 outside the working direction.

[0044] like Figure 3 As shown, the rack and pinion limiter includes a bearing 8, a drive shaft 14, and anti-reverse rings 16. Anti-reverse rings 16 are provided on both sides of the bearing 8 to fix it at the center position of the drive shaft 14 and restrict the movement of the bearing 8 relative to the drive shaft 14. The drive shaft 14 is fixed between the front and rear panels of the housing 1 by bushings 6 at both ends to restrict the rotation of the drive shaft 14 relative to the housing 1.

[0045] like Figure 5As shown, the lengths and distance between the helical gear 3 and the helical rack 7 satisfy the following relationship: L = l0 + 2 × d. L represents the length of the helical rack, l0 represents the distance between the two helical gears, and d is the displacement. Due to the presence of the one-way bearing 4, only one damping unit operates in each direction of motion. When the displacement of the helical rack 7 exceeds d, the helical rack 7 disengages from one end of the helical gear 3, and both damping units cease operation, thus achieving the purpose of angle clipping. For details, see [link to details]. Figure 5 As shown, the one-way bearing 4 of the left damping unit is designed to operate only in the counterclockwise direction, while the one-way bearing of the right damping unit operates only in the clockwise direction. Furthermore, the length of the helical rack 7 is slightly greater than the distance between the two energy-consuming components. When the displacement of the helical rack is greater than d, the internal one-way bearing is in a free-spinning state, preventing relative friction between the disc and the disc brake in the energy-consuming components and thus eliminating damping force. This achieves the characteristic that the damping force is 0 at the position of the damping device's amplitude of motion.

[0046] The hysteretic loading test results of the chamfered friction damping device provided in this application under constant loading period conditions with chamfered displacements of 15mm and 25mm are as follows: Figure 6-7 As shown, it enables two damping units to work independently during loading and unloading, providing damping forces of different magnitudes.

[0047] Example 2

[0048] An application of a chamfered friction damping device is described, which employs the chamfered friction damping device for optimizing acceleration control effect described in Embodiment 1 above. This chamfered friction damping device for optimizing acceleration control effect is applied as a whole in the field of vibration control, especially in the field of building vibration isolation / vibration reduction / vibration control.

[0049] The technical features of the above embodiments can be combined in any way as long as there is no contradiction in the combination of these technical features. For the sake of brevity, not all possible combinations of the technical features in the above embodiments have been described. These embodiments not explicitly stated should also be considered as being within the scope of this specification.

[0050] The above are merely preferred embodiments of the present invention and do not constitute any limitation on the structure of the present invention. The arrangement and quantity of the present invention are not limited to this example and can be optimized according to actual engineering conditions. Any modifications, equivalent changes, and decorations made to the above embodiments based on the technical principles of the present invention, without departing from the scope of the present invention, are still within the scope of the present invention.

Claims

1. A chamfered friction damping device for optimizing acceleration control, characterized in that, It includes a housing (1), a one-way bearing (4), a gear train, an energy-consuming component, a drive shaft (14), and a disc brake connector (5); There are two one-way bearings (4). The two one-way bearings work in opposite directions. The one-way bearings (4) and the disc brake connector (5) are connected to the front and rear panels of the housing (1) through the drive shaft (14) and the bushing. The one-way bearings (4) and the disc brake connector (5) are arranged coaxially and connected through the flat key (15) in the keyway. The energy-consuming components are mainly composed of disc brake pads (2) and disc brake unit (11); the disc brake pads (2) are connected to the bottom end of the disc brake connector (5) by bolts; the disc brake unit (11) is connected to the bottom plate and top plate of the outer shell (1) by a brake fixing plate; The gear rack device includes two helical gears (3) and a helical rack (7). The two helical gears (3) are arranged on the same side of the helical rack (7). Each helical gear (3) is coaxially arranged with its corresponding one-way bearing (4) and connected by a flat key (15) in the keyway. The end of the helical rack (7) is provided with a threaded hole connected to a linear drive shaft (13). The linear drive shaft (13) is connected to the housing (1) through a flange linear bearing (12). The helical rack (7) is provided with a rack limiter on the opposite side of the helical gear (3) to restrict the movement of the helical rack (7) outside the working direction; the length and distance between the helical gear (3) and the helical rack (7) satisfy the following relationship: L=l 0 +2× d ; L This indicates the length of the helical rack. l 0 represents the distance between the two helical gears. d For the displacement of motion; due to the presence of the one-way bearing (4), only one side of the damping unit works in each direction of motion. When the displacement of the helical rack (7) is greater than the displacement of motion, d At this time, the helical rack (7) disengages from the helical gear (3) at one end, and both damping units are disengaged, thus achieving the purpose of chamfering. The energy-consuming component is connected to the drive shaft (14) via the disc brake connector (5), and the one-way bearing (4) is connected to the disc brake connector (5) via the key (15); the helical gear (3) is connected to the one-way bearing (4) via the key (15), and the above together form the damping unit of the friction damping device; the one-way bearings (4) of the two damping units are set to opposite working directions; the disc brake connector (5) is connected to the drive shaft (14) via the key (15); the one-way bearing (4) is used to limit the working direction of the damping unit; both ends of the drive shaft (14) are connected to the outer shell (1) via bushings (6) to limit the rotation of the drive shaft (14); both ends of the helical gear are provided with anti-reverse rings (16) to limit the movement of the helical gear (3) relative to the drive shaft (14).

2. The chamfered friction damping device for optimizing acceleration control effect according to claim 1, characterized in that: The disc brake pad (2) is arranged in the middle of the friction pad of the disc brake (11) to achieve the purpose of stable output of the damping device during operation.

3. The chamfered friction damping device for optimizing acceleration control effect according to claim 1, characterized in that: The helical gear (3) and the helical rack (7) are both located in the same plane.

4. The chamfered friction damping device for optimizing acceleration control effect according to claim 1, characterized in that: The rack limiter includes a bearing (8), a drive shaft (14), and a backstop ring (16). The bearing (8) is provided with backstop rings (16) on both sides to fix it at the center position of the drive shaft (14) and restrict the movement of the bearing (8) relative to the drive shaft (14). The drive shaft (14) is fixed between the front and rear panels of the outer shell (1) by bushings (6) at both ends to restrict the rotation of the drive shaft (14) relative to the outer shell (1).

5. The chamfered friction damping device for optimizing acceleration control effect according to claim 1, characterized in that: Each of the brake mounting plates includes a left brake mounting plate (9) and a right brake mounting plate (10).

6. An application of a chamfered friction damping device, which employs the chamfered friction damping device for optimizing acceleration control as described in any one of claims 1-5, characterized in that: This chamfered friction damping device, used to optimize acceleration control, is applied as a whole in the field of vibration control.

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