Wall type friction damper

Abstract

The utility model provides a wall type friction damper which comprises pressing plates, friction plates, fasteners, adjusting assemblies and connecting assemblies, the at least two friction plates are arranged in parallel, the two pressing plates are arranged at the tops and the bottoms of the two friction plates correspondingly to form a movable unit, the fasteners penetrate through the movable unit, the friction plates can slide in the arrangement direction of the pressing plates, and the adjusting assemblies are arranged on the friction plates. The adjusting assemblies are arranged on the two sides of the pressing plate and comprise rotating wheels, ropes and rope adjusters, rotating shafts of the rotating wheels are fixedly arranged on the two sides of the pressing plate, the ropes are connected to the rotating wheels in a staggered mode, the two ends of the ropes are fixedly connected to embedded parts of the upper wall pier and the lower wall pier respectively, and the rope adjusters are fixedly arranged on the ropes. The at least two connecting assemblies are fixedly arranged at the two ends of the movable unit, and the ends, deviating from the friction plate, of the connecting assemblies are fixedly connected with the upper wall pier and the lower wall pier correspondingly. The friction damper has the effects that the construction precision of the friction damper is improved, and friction coefficient attenuation in the working process of the damper is relieved.

Description

Technical Field

[0001] This invention relates to the technical field of dampers, and in particular to a wall-type friction damper. Background Technology

[0002] Currently, friction dampers are widely used in various fields, including civil engineering and construction, both domestically and internationally. They primarily work by applying positive pressure to fastening bolts, causing friction plates to reciprocate. This generates friction between the friction material and the friction plates, thus dissipating seismic energy. They offer advantages such as high energy dissipation capacity, insensitivity to temperature, simple construction, and low cost. However, the installation and positioning quality of friction dampers can affect their sliding friction. Furthermore, during operation, issues such as insufficient stiffness after yielding and a tendency for the friction coefficient to decrease can arise, leading to unstable vibration reduction performance.

[0003] For concrete structures, the on-site construction of wall-type friction dampers is influenced by complex factors, including subjective and objective factors such as concrete shrinkage and creep, and temperature changes, which can lead to significant and numerous dimensional and positioning errors. Traditional direct construction methods for dampers are extremely difficult to control in terms of accuracy and are inconvenient for positioning. Therefore, it is necessary to technically improve existing wall-type friction dampers and their construction methods to enhance construction accuracy and alleviate technical problems such as friction coefficient attenuation during operation. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a wall-type friction damper, which has the advantages of improving the construction accuracy of the friction damper and alleviating the decrease of the friction coefficient during the operation of the damper.

[0005] The above-mentioned objective of this invention is achieved through the following technical solution: a wall-type friction damper, comprising: a pressure plate, a friction plate, a fastener, an adjusting component, and a connecting component. At least two friction plates are arranged in parallel. Two pressure plates are respectively disposed at the top and bottom of the two friction plates to form a movable unit. The fastener passes through the movable unit and is used to apply pressure between the pressure plate and the friction plate. The friction plate is capable of sliding along the direction of the pressure plate. The adjusting component is disposed on both sides of the pressure plate. The adjusting component includes a rotating wheel, a rope, and a rope adjuster. The rotating shaft of the rotating wheel is fixedly disposed on both sides of the pressure plate. The rope is alternately connected to the rotating wheel. The two ends of the rope are respectively fixedly connected to the embedded parts of the upper and lower wall piers. The rope adjuster is fixedly disposed on the rope and is used to adjust the extension and retraction of the rope. At least two connecting components are fixedly disposed at both ends of the movable unit, and the ends facing away from the friction plate are respectively fixedly connected to the upper and lower wall piers.

[0006] Preferably, the fastener includes a fastening bolt and a fastening nut. The fastening bolt passes through the movable unit, and the fastening nut is threadedly engaged with the fastening bolt to apply pressure between the pressure plate and the friction plate.

[0007] Preferably, the friction plate has a through-hole along its length, the fastening bolt passes through the through-hole, and the friction plate can slide along the direction of the through-hole.

[0008] Preferably, the connecting assembly includes a first connecting plate, a second connecting plate, and a fixing member. The first connecting plate is fixedly disposed at the opposite ends of the two parallel friction plates. The two second connecting plates are respectively fixedly connected to the embedded parts of the upper and lower wall piers. The first connecting plate and the second connecting plate are fixedly connected by the fixing member.

[0009] Preferably, the first connecting plate includes an end plate and an extension plate. The end plate is fixedly connected to the friction plate, and the extension plate is fixedly disposed at the end of the end plate away from the friction plate. The extension plate is fixedly connected to the second connecting plate.

[0010] Preferably, the fastener includes a first connecting hole, a second connecting hole, and a fixing bolt. The first connecting hole is formed on the extension plate, the second connecting hole is formed on the second connecting plate, and the fixing bolt passes through the first connecting hole and the second connecting hole to fix the extension plate and the second connecting plate.

[0011] Preferably, the second connecting hole is an oblong hole.

[0012] Preferably, a sliding hole is provided at the mating point between the friction plate and the fastener, the sliding hole is provided along the length direction of the friction plate, and the fastener passes through the sliding hole.

[0013] Preferably, the device further includes a housing, which is provided through at both ends. The housing is sleeved on the outside of the movable unit, and a through hole is provided on the side of the housing at a corresponding position to the rotating wheel. The rotating wheel protrudes from the through hole.

[0014] In summary, the present invention has at least one of the following beneficial technical effects:

[0015] 1) The friction damper of this invention is simpler to install and construct, easier to adjust, and has a high tolerance for construction errors;

[0016] 2) The friction damper of this invention has more precise positioning and higher construction accuracy during installation;

[0017] 3) The friction damper of the present invention has variable friction capability, which can realize the design requirements of multi-stage vibration reduction and provide greater stiffness and damping when there is a large inter-story displacement. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the installation of the wall-mounted friction damper of the present invention without a housing;

[0019] Figure 2 This is a schematic diagram of the wall-type friction damper structure in this invention.

[0020] Figure 3 This is a schematic diagram showing the arrangement relationship between the friction plate and the pressure plate in this invention;

[0021] Figure 4 This is a schematic diagram of the housing of the wall-type friction damper in this invention;

[0022] Figure 5 This is a schematic diagram of the overall installation of the wall-mounted friction damper of the present invention.

[0023] Reference numerals: 1. Pressure plate; 2. Friction plate; 3. Fastener; 31. Fastening bolt; 32. Fastening nut; 4. Adjusting assembly; 41. Rotary wheel; 42. Rope; 43. Rope adjuster; 5. Connecting assembly; 51. First connecting plate; 511. End plate; 512. Extension plate; 52. Second connecting plate; 53. Fixing member; 531. First connecting hole; 532. Second connecting hole; 533. Fixing bolt; 6. Sliding hole; 7. Housing; 7a. Through hole. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the described embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application pertains. The use of terms such as "a" or "an" in this patent application specification and claims does not indicate a limitation of quantity, but rather indicates the presence of at least one.

[0026] In the description of this application and the claims, the terms "upper", "lower", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this application.

[0027] The present invention will be further described in detail below with reference to the accompanying drawings.

[0028] Figures 1-5 A specific embodiment of the wall-type friction damper of the present invention is shown, wherein a cavity for installing the wall-type friction damper is formed between the upper and lower wall piers. The wall-type friction damper includes: a pressure plate 1, a friction plate 2, a fastener 3, an adjustment component 4, and a connecting component 5. At least two friction plates 2 are arranged in parallel, and two pressure plates 1 are respectively arranged at the top and bottom of the two friction plates 2 to form a movable unit. The fastener 3 is arranged through the movable unit to apply pressure between the pressure plate 1 and the friction plate 2, and the friction plate 2 can slide along the setting direction of the pressure plate 1.

[0029] In this embodiment, there are multiple active units, which are stacked along their height direction and connected by fasteners 3, thereby increasing the internal friction of the damper.

[0030] Of course, in this embodiment, the pressure plate 1 between two adjacent active units can be shared, which reduces the volume of the damper itself and facilitates installation.

[0031] A sliding hole 6 is provided at the mating point between the friction plate 2 and the fastener 3. The sliding hole 6 is set along the length direction of the friction plate 2, and the fastener 3 passes through the sliding hole 6. When the upper and lower wall piers swing left and right, the friction plate 2 can slide while it is in contact with the pressure plate 1, so as to realize the sliding friction between the friction plate 2 and the pressure plate 1.

[0032] In this embodiment, the fastener 3 includes a fastening bolt 31 and a fastening nut 32. The fastening bolt 31 is disposed through the movable unit, that is, through the pressure plate 1 and the friction plate 2. The fastening nut 32 is threadedly engaged with the fastening bolt 31, applying pressure between the pressure plate 1 and the friction plate 2. While tightening the fastening nut 32, a positive pressure is applied to adjust the positive pressure between the pressure plate 1 and the friction plate 2, thereby adjusting the friction between the pressure plate 1 and the friction plate 2.

[0033] Adjustment component 4 is disposed on both sides of pressure plate 1. Adjustment component 4 includes a rotating wheel 41, a rope 42, and a rope 42 adjuster. The rotating shaft of the rotating wheel 41 is fixedly disposed on both sides of pressure plate 1. The rotating wheel 41 can rotate and is evenly distributed on both sides of pressure plate. The rope 42 is staggered in the groove of the rotating wheel 41. The two ends of the rope 42 are respectively fixedly connected to the embedded parts of the upper and lower wall piers. The rope 42 adjuster is fixedly disposed on the rope 42 and is used to adjust the extension and retraction of the rope 42. Specifically, the rope 42 adjuster is located at the end of the rope 42 and is used to adjust the length and tension of the rope 42. It can be in the form of a turnbuckle or other adjustment devices. Those skilled in the art can select different rope 42 adjusters according to their needs, as long as the above-mentioned effects are achieved. The rope 42 adjuster is used to adjust the position and inclination of the damper when installing the damper device. Under the premise of reasonable installation, it should be adjusted before the damper is closed to make the rope 42 nearly slack. If it is necessary to temporarily increase the pre-pressure of the damper during construction, the rope 42 can also be appropriately tensioned.

[0034] During the damper's operation, the misalignment of the upper and lower wall piers causes the friction plate 2 to slide and dissipate energy. When the interlayer displacement is large, the rope 42 will generate tension to further press the damper pressure plate 1, increase friction, and simultaneously tighten the upper and lower wall piers, thereby increasing stiffness and damping, and further enhancing energy dissipation efficiency.

[0035] In this embodiment, the ropes 42 are arranged in a repeating and interlacing manner between at least two adjacent moving units, thereby forming a structurally stable whole among the different moving units. Furthermore, in this application, the ropes 42 are made of elastic steel cables, and to ensure that the ropes 42 can slide freely, they can be appropriately lubricated.

[0036] Two connecting components 5 are fixedly installed at both ends of the movable unit, and the ends facing away from the friction plate 2 are respectively fixedly connected to the upper and lower wall piers. The connecting components 5 include a first connecting plate 51, a second connecting plate 52, and a fixing member 53. The first connecting plate 51 is fixedly installed at the opposite ends of the two parallel friction plates 2.

[0037] Specifically, the first connecting plate 51 includes an end plate 511 and an extension plate 512. The end plate 511 is fixedly connected to the friction plate 2, and the extension plate 512 is fixedly disposed at the end of the end plate 511 away from the friction plate 2. The extension plate 512 is fixedly connected to the second connecting plate 52.

[0038] The two second connecting plates 52 are fixedly connected to the embedded parts of the upper and lower wall piers respectively, and the first connecting plate 51 and the second connecting plate 52 are fixedly connected by the fastener 53.

[0039] Specifically, the fastener 53 includes a first connecting hole 531, a second connecting hole 532, and a fixing bolt 533. The first connecting hole 531 is formed on the extension plate 512, the second connecting hole 532 is formed on the second connecting plate 52, and the fixing bolt 533 is provided through the first connecting hole 531 and the second connecting hole 532 to fix the extension plate 512 and the second connecting plate 52.

[0040] In this embodiment, the fixing bolt 533 can be a high-strength bolt, which is used to fix the first connecting plate 51 and the second connecting plate 52 through the first connecting hole 531 and the second connecting hole 532.

[0041] Of course, in this application, the fixing method of the fixing bolt 533 can also be replaced by a bolt-weld hybrid fixing method of high-strength bolts and welding to ensure that the final connection between the damper and the structure is reliable and that the damper as a whole will not shift or tilt after the rope 42 is loosened.

[0042] In this embodiment, the second connecting hole 532 is an oblong hole, and the oblong hole structure is used to reserve error space for the installation and construction of the damper.

[0043] Of course, the first connecting hole 531 can also be set as an oblong hole, which has the same effect as the second connecting hole 532, and will not be elaborated here.

[0044] In order to protect the inside of the damper, a housing 7 is provided on the outside of the damper. The two ends of the housing 7 are through and fitted on the outside of the movable unit. The two ends of the friction plate 2 protrude from the two ends of the housing 7. The side of the housing 7 and the corresponding position of the wheel 41 are provided with through holes 7a. The wheel 41 protrudes from the through holes 7a. The rope 42 is located on the outside of the housing 7 and is intertwined.

[0045] The present invention also discloses a construction method for the above-mentioned wall-type friction damper, comprising the following steps:

[0046] S1. After completing the construction of the embedded parts and the pouring of the upper and lower wall piers and reaching the design strength, the damper is centered between the upper and lower wall piers. First, connect the two ends of the rope 42 to the embedded parts of the upper and lower wall piers and align the first connecting plate 51 and the second connecting plate 52 to complete the initial installation of the damper.

[0047] S2. Continuously adjust the length and tension of rope 42 through rope 42 adjuster, and use a level, meter stick or other auxiliary methods to precisely control and correct the inclination angle and position of the damper. Rope 42 can be appropriately tensioned to ensure the stability of the damper.

[0048] S3. After the damper installation error is adjusted to within the allowable range, the first connecting plate 51 and the second connecting plate 52 are fixedly connected by the fastener 53. After the connection is completed, the rope 42 adjuster is adjusted again to loosen the rope 42 and complete the installation of the damper.

[0049] S4. Complete the remaining work on the wall, fill the space between the damper housing and the external wall with buffer material, and finally apply the building surface layer.

[0050] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A wall-type friction damper, characterized in that, include: Pressure plate, friction plate, fasteners, adjustment components, connecting components, At least two of the aforementioned friction plates are arranged in parallel. The two pressure plates are respectively disposed at the top and bottom of the two friction plates, forming a movable unit. The fastener extends through the movable unit and is used to apply pressure between the pressure plate and the friction plate, and the friction plate is capable of sliding along the direction of the pressure plate. The adjustment assembly is disposed on both sides of the pressure plate. The adjustment assembly includes a rotating wheel, a rope, and a rope adjuster. The rotating shaft of the rotating wheel is fixedly disposed on both sides of the pressure plate. The rope is crisscrossed and connected to the rotating wheel. Both ends of the rope are respectively fixedly connected to embedded parts of the upper and lower wall piers. The rope adjuster is fixedly disposed on the rope and is used to adjust the extension and retraction of the rope. At least two of the connecting components are fixedly disposed at both ends of the movable unit, and the end facing away from the friction plate is fixedly connected to the upper and lower wall piers respectively.

2. A wall-type friction damper according to claim 1, characterized in that, The fasteners include fastening bolts and fastening nuts. The fastening bolts pass through the movable unit, and the fastening nuts are threadedly engaged with the fastening bolts to apply pressure between the pressure plate and the friction plate.

3. A wall-type friction damper according to claim 2, characterized in that, The friction plate has a through-hole along its length, and the fastening bolt passes through the through-hole. The friction plate can slide along the direction of the through-hole.

4. A wall-type friction damper according to claim 1, characterized in that, The connecting assembly includes a first connecting plate, a second connecting plate, and a fixing member. The first connecting plate is fixedly disposed at the opposite ends of the two parallel friction plates. The two second connecting plates are respectively fixedly connected to the embedded parts of the upper and lower wall piers. The first connecting plate and the second connecting plate are fixedly connected by the fixing member.

5. A wall-type friction damper according to claim 4, characterized in that, The first connecting plate includes an end plate and an extension plate. The end plate is fixedly connected to the friction plate, and the extension plate is fixedly disposed at the end of the end plate away from the friction plate. The extension plate is fixedly connected to the second connecting plate.

6. A wall-type friction damper according to claim 5, characterized in that, The fastener includes a first connecting hole, a second connecting hole, and a fixing bolt. The first connecting hole is formed on the extension plate, the second connecting hole is formed on the second connecting plate, and the fixing bolt passes through the first connecting hole and the second connecting hole to fix the extension plate and the second connecting plate.

7. A wall-type friction damper according to claim 6, characterized in that, The second connecting hole is an oblong hole.

8. A wall-type friction damper according to claim 1, characterized in that, A sliding hole is provided at the mating point between the friction plate and the fastener. The sliding hole is arranged along the length direction of the friction plate, and the fastener passes through the sliding hole.

9. A wall-type friction damper according to claim 1, characterized in that, It also includes a housing, with both ends of the housing extending through it. The housing is fitted onto the outside of the movable unit, and a through hole is provided on the side of the housing at a corresponding position to the rotating wheel. The rotating wheel protrudes from the through hole.

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