A gapless viscous damper with hypersensitive displacement feedback

Abstract

The utility model provides a kind of super-sensitive displacement feedback's gapless viscous damper, belong to building structure damping technical field;Including viscous damper body, the viscous damper body includes the connecting shaft of both sides, one of the connecting shaft slidingly connects in viscous damper body inside, another connecting shaft is fixedly connected in viscous damper body inside, the outside of connecting shaft far from viscous damper body one end is fixedly connected with outer fixed sleeve, the both ends of outer fixed sleeve both sides are all fixedly connected with angular contact joint bearing;The utility model is by being provided with angular contact joint bearing, bearing base and inner pad, so that angular contact joint bearing and inner pad are tightly contacted, ensure that bearing base and angular contact joint bearing are gapless combination, replace traditional pin shaft connection mode, so that bearing base and connecting shaft reach super-sensitive feedback effect, so that device can respond to smaller displacement, improve the buffering effect of device.

Description

Technical Field

[0001] This utility model relates to the field of building structure vibration reduction technology, and in particular to a gapless viscous damper with ultrasensitive displacement feedback. Background Technology

[0002] Viscous dampers for buildings are devices used to reduce structural vibration and improve earthquake and wind resistance. They belong to the velocity-dependent damper category, and their core principle is to dissipate vibration energy by utilizing the resistance of viscous fluids.

[0003] Existing conventional viscous dampers generally adopt a pin shaft + radial joint angular contact bearing connection structure. However, there is a 0.5-2 mm assembly gap between the pin shaft and the lug and the radial joint bearing, which requires 5-10 mm of structural displacement to activate the damping effect. This makes it unable to respond to micro-amplitude vibrations of less than 3 mm, resulting in a 15%-30% decrease in vibration reduction efficiency due to displacement response delay.

[0004] Therefore, this invention provides a gapless viscous damper with ultrasensitive displacement feedback to meet the requirements. Utility Model Content

[0005] The purpose of this invention is to provide a gapless viscous damper with ultrasensitive displacement feedback to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a gapless viscous damper with ultrasensitive displacement feedback, comprising a viscous damper body, the viscous damper body including connecting shafts on both sides, one of the connecting shafts being slidably connected to the inner side of the viscous damper body, and the other connecting shaft being fixedly connected to the inner side of the viscous damper body, an outer sleeve being fixedly connected to the outer side of the connecting shaft away from the viscous damper body, angular contact joint bearings being fixedly connected to both ends of the outer sleeve, a bearing base being snapped onto the outer side of the angular contact joint bearing, the bearing base including an inner pad block fixedly connected around its inner perimeter, an end plate being welded to the side of the bearing base away from the viscous damper body, a rear top cover being fixedly connected to the inner side of the bearing base near the end plate, a stiffening plate being fixedly connected to the side of the end plate away from the bearing base, and a pre-embedded part being fixedly connected to the outer side of the stiffening plate.

[0007] In a preferred embodiment, the positions of the angular contact spherical bearing and the inner pad on the inner side of the same bearing base are in one-to-one correspondence, and the outer side of the angular contact spherical bearing is in rotational contact with the corresponding inner pad.

[0008] In a preferred embodiment, one of the embedded parts is located at the top of the corresponding end plate, and the other embedded part is located at the bottom of the corresponding end plate.

[0009] In a preferred embodiment, the rear top cover abuts against the corresponding end plate, and a rotating groove for the rotation of the connecting shaft is provided on the side of the rear top cover away from the corresponding end plate.

[0010] In a preferred embodiment, a fixing cover is bolted to the side of the bearing base near the viscous damper body, and a gasket groove is provided at the end of the bearing base near the fixing cover.

[0011] In a preferred embodiment, a gasket is placed inside the groove, and both the fixing cover and the gasket are sleeved on the outside of the corresponding connecting shaft, with the fixing cover and the gasket abutting against each other.

[0012] In a preferred embodiment, the bearing base includes a connecting weld near the outer end of the end plate, and the connecting weld is distributed around the bearing base.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This utility model, by setting up an angular contact spherical bearing, a bearing base, and an inner pad, ensures that the angular contact spherical bearing and the inner pad are in close contact, and that the bearing base and the angular contact spherical bearing are in a gapless combination, replacing the traditional pin connection method. This allows the bearing base and the connecting shaft to achieve a super-sensitive feedback effect, enabling the device to respond to smaller displacements and improving the device's buffering effect.

[0014] This utility model, by setting an end plate, a stiffening plate and a rear top cover, allows the connecting shaft to rotate inside the bearing base. The tight welding of the connecting weld greatly reduces the welding deformation between the bearing base and the end plate, and the stiffening plate improves the stability of the damper. Attached Figure Description

[0015] Figure 1 A cross-sectional schematic diagram of a gapless viscous damper with ultrasensitive displacement feedback; Figure 2 for Figure 1 Enlarged view of point A; Figure 3 This is a cross-sectional view showing the fit between the bearing base and the outer sleeve.

[0016] In the figure: 1. Viscous damper body; 2. Connecting shaft; 3. Outer fixed sleeve; 4. Angular contact spherical bearing; 5. Bearing base; 6. Connecting weld; 7. Inner pad; 8. Rear top cover; 9. End plate; 10. Stiffening plate; 11. Embedded part; 12. Fixed cover; 13. Gasket. Detailed Implementation

[0017] The present invention will be further described below with reference to the embodiments.

[0018] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention; the conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the concept of the present invention are all within the scope of protection claimed by the present invention.

[0019] Please see Figures 1-3 This utility model provides a gapless viscous damper with ultrasensitive displacement feedback, including a viscous damper body 1, model VFD-NL. The viscous damper body 1 includes connecting shafts 2 on both sides. One connecting shaft 2 is slidably connected to the inner side of the viscous damper body 1, and the other connecting shaft 2 is fixedly connected to the inner side of the viscous damper body 1. An outer sleeve 3 is fixedly connected to the outer side of the connecting shaft 2 away from the viscous damper body 1. Angular contact joint bearings 4 are fixedly connected to both ends of the outer sleeve 3. A bearing base 5 is snapped onto the outer side of the angular contact joint bearing 4. An end plate 9 is welded to one side of the viscous damper body 1. A stiffening plate 10 is fixedly connected to the side of the end plate 9 away from the bearing base 5. An embedded part 11 is fixedly connected to the outside of the stiffening plate 10. One embedded part 11 is located at the top of the corresponding end plate 9, and the other embedded part 11 is located at the bottom of the corresponding end plate 9. A fixing cover 12 is bolted to the side of the bearing base 5 near the viscous damper body 1. A gasket groove is opened at the end of the bearing base 5 near the fixing cover 12. A gasket 13 is placed inside the gasket groove. The fixing cover 12 and the gasket 13 are both sleeved on the outside of the corresponding connecting shaft 2. The fixing cover 12 and the gasket 13 are in contact.

[0020] The damper is installed between the two wall blocks by the pre-embedded parts 11 on both sides, and the fixing cover 12 is fixed to the outside of the bearing base 5 by bolts, and the pressure shim 13 is ensured.

[0021] Please see Figures 1-3 The bearing base 5 includes an inner pad 7 fixedly connected to the inner perimeter. A rear top cover 8 is fixedly connected to the inner end of the bearing base 5 near the end plate 9. The positions of the angular contact spherical bearing 4 and the inner pad 7 on the same inner side of the bearing base 5 are one-to-one. The outer side of the angular contact spherical bearing 4 is in rotatable contact with the corresponding inner pad 7. The rear top cover 8 abuts against the corresponding end plate 9. A rotating groove for connecting the shaft 2 is opened on the side of the rear top cover 8 away from the corresponding end plate 9. The bearing base 5 includes a connecting weld 6 at the outer end near the end plate 9. The connecting weld 6 is distributed around the bearing base 5. The axial clearance of the angular contact spherical bearing 4 is ≤0.05mm. The bearing base 5 has an IT6 tolerance.

[0022] When the wall vibrates, the impact is transmitted to the angular contact spherical bearing 4 through the inner pad 7 in the bearing base 5, and then to the viscous damper body 1 through the outer fixed sleeve 3 and the connecting shaft 2, so as to buffer the kinetic energy through the viscous damper body 1.

[0023] The angular contact spherical bearing 4 and the inner pad 7 are in close contact. This close contact design ensures that there is no gap between the angular contact spherical bearing 4 and the inner pad 7 during rotation. This gapless combination replaces the traditional pin connection method, thus avoiding the problem of insensitive response to small displacements caused by gaps. When the bearing base 5 produces a small displacement, the angular contact spherical bearing 4 can respond immediately and transmit the motion, with a start-up response time ≤0.02s. This ultrasensitive feedback mechanism enables the device to respond to even smaller displacements, with a minimum effective displacement of 0.5mm. This allows it to play a timely buffering role when the structure is subjected to small vibrations, quickly dissipating energy, reducing the vibration amplitude of the structure, and significantly improving the buffering effect and overall performance of the device.

[0024] The end plate 9 is connected to the bearing base 5 by welding. This connection method not only ensures the firmness between the end plate 9 and the bearing base 5, but also provides a stable support platform for the entire device. The stiffening plate 10 is fixedly connected to the outside of the end plate 9. By increasing the rigidity of the structure, it effectively prevents deformation or torsion that may occur during vibration. The weld 6 is connected by welding to the outer end of the bearing base 5 near the end plate 9. The high quality of the welding process ensures that the welding deformation is ≤0.1mm / m, which greatly reduces the amount of welding deformation. This tight welding not only enhances the connection strength between the bearing base 5 and the end plate 9, but also ensures the structural accuracy of the entire device, further improving the stability and reliability of the damper.

[0025] The working principle and usage process of this utility model are as follows: The damper is installed between the two wall blocks through the pre-embedded parts 11 on both sides. The fixing cover 12 is fixed to the outside of the bearing base 5 with bolts, and the pressure pad 13 is ensured. When the wall vibrates, the impact is transmitted to the angular contact joint bearing 4 through the inner pad 7 in the bearing base 5, and then transmitted to the viscous damper body 1 through the outer fixed sleeve 3 and the connecting shaft 2. The viscous damper body 1 buffers the kinetic energy.

[0026] The above-mentioned viscous damper body 1 is the prior art disclosed in this utility model, and will not be described in detail here.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gapless viscous damper with hypersensitive displacement feedback, comprising a viscous damper body (1), characterized in that, The viscous damper body (1) includes connecting shafts (2) on both sides. One of the connecting shafts (2) is slidably connected to the inner side of the viscous damper body (1), and the other connecting shaft (2) is fixedly connected to the inner side of the viscous damper body (1). An outer sleeve (3) is fixedly connected to the outer side of the connecting shaft (2) away from the viscous damper body (1). An angular contact joint bearing (4) is fixedly connected to both ends of the outer sleeve (3). A bearing base (5) is snapped onto the outer side of the angular contact joint bearing (4). The bearing base (5) includes an inner pad (7) fixedly connected to the inner side around the perimeter. An end plate (9) is welded to the side of the bearing base (5) away from the viscous damper body (1). A rear top cover (8) is fixedly connected to the inner side of the bearing base (5) near the end plate (9). A stiffening plate (10) is fixedly connected to the side of the end plate (9) away from the bearing base (5). An embedded part (11) is fixedly connected to the outer side of the stiffening plate (10).

2. A gapless viscous damper with hypersensitive displacement feedback according to claim 1, characterized in that, The positions of the angular contact spherical bearing (4) and the inner pad (7) on the inner side of the same bearing base (5) are in one-to-one correspondence, and the outer side of the angular contact spherical bearing (4) is in rotational contact with the corresponding inner pad (7).

3. A gapless viscous damper with hypersensitive displacement feedback according to claim 1, characterized in that, One of the embedded parts (11) is located at the top of the corresponding end plate (9), and the other embedded part (11) is located at the bottom of the corresponding end plate (9).

4. A gapless viscous damper with hypersensitive displacement feedback according to claim 1, characterized in that, The rear top cover (8) abuts against the corresponding end plate (9), and a rotating groove for connecting the shaft (2) is provided on the side of the rear top cover (8) away from the corresponding end plate (9).

5. A gapless viscous damper with hypersensitive displacement feedback according to claim 1, characterized in that, The bearing base (5) is bolted to a fixing cover (12) on the side near the viscous damper body (1), and a pad groove is provided at one end of the bearing base (5) near the fixing cover (12).

6. A gapless viscous damper with hypersensitive displacement feedback according to claim 5, characterized in that, A gasket (13) is placed inside the groove. The fixing cover (12) and the gasket (13) are both sleeved on the outside of the corresponding connecting shaft (2). The fixing cover (12) and the gasket (13) are in contact.

7. A gapless viscous damper with hypersensitive displacement feedback according to claim 1, characterized in that, The bearing base (5) includes a connecting weld (6) on the outer end near the end plate (9), and the connecting weld (6) is distributed around the bearing base (5).

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