Friction damper and method of mounting thereof

Abstract

The application discloses a friction damper and a mounting method thereof, and relates to the technical field of building equipment, which comprises two mounting seat plates, two mounting components for mounting the damper at the end of a load-bearing wall are arranged on the two mounting seat plates, a second connecting arm is arranged at the lower end of the upper mounting seat plate, a first connecting arm is arranged at the upper end of the lower mounting seat plate, the upper end of the first connecting arm is rotationally connected with the tail part of a damping piston cylinder, the damping piston cylinder is filled with oil liquid, a piston block is slidably arranged in the damping piston cylinder, and the piston rod at the other end of the piston block is rotationally connected with the second connecting arm. The damper is designed according to the existing needs, the vibration displacement of the load-bearing wall is amplified through hydraulic transmission, then energy is absorbed by a plurality of damping absorption parts, and the damping parts are convenient to replace and maintain in the later period.

Description

Technical Field

[0001] This invention relates to the field of building equipment technology, specifically to friction dampers and their installation methods. Background Technology

[0002] Energy dissipation and vibration reduction technology is one of the most effective means to reduce the seismic response of building structures and prevent their collapse in major earthquakes. Currently, the mainstream dampers are mainly friction dampers. Friction dampers can usually dissipate energy under wind-induced vibrations or minor earthquakes. Their energy dissipation mechanism is to convert seismic energy into heat energy through the friction between the friction plates and sliding plates. Existing patent publication number CN112482600B discloses a composite damper for building frames, which uses friction damping between components to dissipate energy. Patent publication number CNCN115198906B discloses an efficiency-enhancing rotating friction beam damper, which can drive the first and second horizontal plates to rotate and dissipate energy through friction by the left and right connecting end plates. The load-bearing capacity of the beam damper can be increased by increasing the distance between the friction plates and the pin shaft. All of the above-mentioned friction damping devices have the problem of difficult maintenance in the later stage, and they also require pouring concrete for installation, which is inconvenient.

[0003] Based on this, a friction damper and its installation method are now provided, which can eliminate the drawbacks of existing devices. Summary of the Invention

[0004] The purpose of this invention is to provide a friction damper and its installation method to solve the problems of existing technologies, such as difficulty in post-installation maintenance and the need for pouring during installation, which makes installation inconvenient.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A friction damper includes two mounting plates, each with mounting components for mounting on the end of a load-bearing wall. The upper mounting plate has a second connecting arm at its lower end, and the lower mounting plate has a first connecting arm at its upper end. The upper end of the first connecting arm is rotatably connected to the tail of a damping piston cylinder. The damping piston cylinder is filled with oil, and a piston block is slidably fitted inside it. The piston rod at the other end of the piston block is rotatably connected to the second connecting arm. The side of the damping piston cylinder is connected to a branch pipe via a main connecting pipe. Both ends of the branch pipe are fixed to the mounting plates via positioning brackets. Multiple damping components are connected to the lower side of the branch pipe.

[0007] Based on the above technical solutions, the present invention also provides the following optional technical solutions:

[0008] In one alternative embodiment: the damping component includes a hydraulic transmission component, which is disposed on one side of the mounting vertical plate at the upper end of the mounting base plate. The hydraulic transmission component includes an auxiliary piston cylinder. The oil inlet at the upper end of the auxiliary piston cylinder is connected to the main distribution pipe through a distribution pipe. The piston block inside the auxiliary piston cylinder is connected to a pressure output rod. The lower end of the pressure output rod extends out of the auxiliary piston cylinder and is connected to the docking base plate. A friction element for providing damping is provided between the lower end of the docking base plate and the upper end of the mounting base plate. A temporary support element for lifting the docking base plate is also provided on the mounting vertical plate.

[0009] In one alternative: the temporary support includes a worm gear rotatably mounted on the side of the mounting vertical plate, the central shaft of the worm gear passing through the mounting vertical plate and connected to a cam, the side of the docking base plate being provided with a transmission pin corresponding to the cam, a worm engaging on the upper side of the worm gear, the worm being rotatably mounted on a mounting side block on the surface of the mounting vertical plate, and a maintenance handle connected to the end of the worm for driving its rotation.

[0010] In one alternative embodiment: the friction component includes a first friction plate and a second friction plate. The friction surface of the first friction plate has multiple friction protrusions, and the friction surface of the second friction plate has multiple friction grooves. The friction protrusions and friction grooves cooperate with each other. Each end of the second friction plate and the first friction plate has a through hole, and a locking bolt is fitted at the through hole position. A damping spring is sleeved between the locking bolt and the second friction plate. The lower end of the second friction plate is connected to a lower pressure plate, and the lower pressure plate is in abutting contact with the upper end of the mounting base plate. The upper end of the first friction plate is connected to an upper pressure plate, and the upper pressure plate matches the positioning notch at the lower end of the docking base plate. The upper end of the lower pressure plate is provided with a buffer pad corresponding to the end of the first friction plate.

[0011] In one alternative: a guide seat is provided at the upper end of the mounting plate where the friction element is located, and the guide seat matches the lower pressure plate.

[0012] In one alternative embodiment: the mounting component includes two clamping plates slidably disposed on the surface of the mounting base plate. The upper end of the mounting base plate on which the clamping plates are located has positioning rods for insertion into mounting holes on the surface of the load-bearing wall. The mounting base plate has a transmission notch, in which two clamping sliders are fitted. The clamping sliders are connected to the clamping plates via connecting rods. The clamping sliders are threaded onto clamping screws. The end of the clamping screws passes through the mounting base plate and is connected to the mounting handle. The clamping screws have two threaded areas with opposite directions of rotation.

[0013] In one alternative embodiment: the upper end of the mounting base plate is also provided with multiple sound-emitting units corresponding to the positions of the mounting vertical plates. When energy is absorbed, the sound-emitting units will emit sound, and by listening to the sound, it can be determined whether the friction parts need to be replaced. The sound-emitting unit includes a lever, which is rotatably connected to the upper end of a fulcrum rod. The fulcrum rod is located at one-third point of the lever, and the lower end of the fulcrum rod is connected and fixed to the mounting base plate. One end of the lever is provided with a pin, which matches two actuating clips on the side of the docking base plate. The other end of the lever is provided with a striking ball, and a metal sound-emitting plate is provided above the striking ball. The metal sound-emitting plate is connected to the mounting base plate through a column.

[0014] In one alternative: the lever end is provided with an indicator arrow, and the column surface is provided with a scale bar corresponding to the indicator arrow.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] This invention is designed to meet existing needs. It amplifies the vibration displacement of a load-bearing wall through hydraulic transmission, and then absorbs the energy through multiple sets of damping absorption parts, which facilitates the replacement and maintenance of the damping parts in the future. In addition, after amplifying the vibration amplitude, the deformation of each damping part is used to make a knocking sound, which provides a judgment standard for later maintenance and facilitates maintenance work. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the other side of the structure of the present invention.

[0019] Figure 3 For the present invention Figure 1 Enlarged view of the structure at the location.

[0020] Figure 4 This is a schematic diagram of the hydraulic transmission component of the present invention.

[0021] Figure 5 This is a schematic diagram of the temporary support structure of the present invention.

[0022] Figure 6 This is a schematic diagram of one side of the mounting component of the present invention.

[0023] Figure 7 This is a schematic diagram of the other side of the mounting component of the present invention.

[0024] Figure 8 This is a schematic diagram of the friction component structure of the present invention.

[0025] Figure 9This is a schematic diagram of the sound-generating unit structure of the present invention.

[0026] Figure reference numerals: Mounting base plate 11, damping piston cylinder 12, first connecting arm 13, connecting main pipe 14, diverting main pipe 15, guide seat 16, damping component 17, hydraulic transmission component 18, friction component 19, positioning frame 20, second connecting arm 21, clamping plate 22, positioning rod 23, mounting handle 24, transmission notch 25, clamping slider 26, clamping screw 27, maintenance handle 28, diverting pipe 29, auxiliary piston cylinder 30, pressure output rod 31, docking base plate 32, cam 33, mounting vertical plate 34, worm gear 35, worm wheel 36, upper pressure plate 37, first friction plate 38, friction protrusion 39, buffer pad 40, friction groove 41, lower pressure plate 42, second friction plate 43, locking bolt 44, damping spring 45, metal sound-emitting plate 46, striking ball 47, column 48, lever 49, fulcrum rod 50, actuating clamp 51, transmission pin 52. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0028] In one embodiment, such as Figures 1-9 As shown, the friction damper includes two mounting plates 11, each with mounting components for mounting on the end of a load-bearing wall. The upper mounting plate 11 has a second connecting arm 21 at its lower end and a first connecting arm 13 at its upper end. The upper end of the first connecting arm 13 is rotatably connected to the tail of a damping piston cylinder 12. The damping piston cylinder 12 is filled with oil and has a piston block that slides inside. The piston rod at the other end of the piston block is rotatably connected to the second connecting arm 21. The side of the damping piston cylinder 12 is connected to a diversion main pipe 15 via a connecting main pipe 14. Both ends of the diversion main pipe 15 are connected and fixed to the mounting plates 11 via positioning brackets 20. Multiple damping components 17 are connected to the lower side of the diversion main pipe 15. These multiple damping components 17 absorb vibration energy. Later maintenance can be performed on each damping component 17 individually, facilitating vibration energy absorption by integrating the components.

[0029] The damping component 17 includes a hydraulic transmission component 18, which is disposed on one side of the mounting vertical plate 34 at the upper end of the mounting base plate 11. The hydraulic transmission component 18 includes an auxiliary piston cylinder 30. The oil inlet at the upper end of the auxiliary piston cylinder 30 is connected to the main branch pipe 15 through the branch pipe 29. The piston block inside the auxiliary piston cylinder 30 is connected to the pressure output rod 31. The lower end of the pressure output rod 31 extends out of the auxiliary piston cylinder 30 and is connected to the docking base plate 32. A friction element 19 for providing damping is provided between the lower end of the docking base plate 32 and the upper end of the mounting base plate 11. The mounting vertical plate 34 is also provided with a temporary support for supporting the docking base plate 32. The docking base plate 32 is supported by the temporary support to facilitate the replacement of the friction element 19.

[0030] The temporary support includes a worm gear 36 rotatably mounted on the side of the mounting vertical plate 34. The central shaft of the worm gear 36 passes through the mounting vertical plate 34 and is connected to the cam 33. The side of the docking base plate 32 is provided with a transmission pin 52 corresponding to the cam 33. A worm 35 is meshed on the upper side of the worm gear 36. The worm 35 is rotatably mounted on the mounting side block on the surface of the mounting vertical plate 34. The end of the worm 35 is connected to a maintenance handle 28 for driving its rotation. During actual adjustment, the maintenance handle 28 drives the worm 35 to rotate. The worm 35 and the worm gear 36 cooperate to drive the cam 33 to rotate. The cam 33 will generate a thrust on the transmission pin 52, thereby causing the docking base plate 32 to move upward and release the pressure on the friction component 19, thus facilitating later replacement.

[0031] It should be noted that the diameter of the main piston block in the damping piston cylinder 12 in this application is ten times the diameter of the auxiliary piston block in the auxiliary piston cylinder 30. This amplifies the deformation of the vibration and, together with multiple sets of friction components 19, completes the energy distribution and absorption. The requirements for materials are also reduced, thus reducing costs.

[0032] The friction element 19 includes a first friction plate 38 and a second friction plate 43. The friction surface of the first friction plate 38 has multiple friction protrusions 39, and the friction surface of the second friction plate 43 has multiple friction grooves 41. The friction protrusions 39 mate with the friction grooves 41. Each end of the second friction plate 43 and the first friction plate 38 has a through hole, at which a locking bolt 44 is fitted. A damping spring 45 is sleeved between the locking bolt 44 and the second friction plate 43. The lower end of the second friction plate 43 is connected to a lower pressure plate 42, and the lower pressure plate 42 abuts against the upper end of the mounting base plate 11. The upper end of 38 is connected to the upper pressure plate 37. The upper pressure plate 37 matches the positioning notch at the lower end of the docking base plate 32. During installation, the upper pressure plate 37 can be locked in position with the docking base plate 32 to prevent the upper pressure plate 37 from shifting. The upper end of the lower pressure plate 42 is provided with a buffer pad 40 corresponding to the end of the first friction plate 38. When the upper pressure plate 37 is subjected to pressure, the first friction plate 38 moves downward under force. The friction protrusion 39 and the friction groove 41 cooperate to make the first friction plate 38 and the second friction plate 43 move away from each other, so that the pressure is absorbed by the damping spring 45. In this way, the impact force of the deformation of the load-bearing wall can be absorbed by friction damping.

[0033] A guide seat 16 is provided on the upper end of the mounting base plate 11 where the friction element 19 is located. The guide seat 16 is matched with the lower pressure plate 42. During installation and disassembly, the lower pressure plate 42 can be slid along the surface of the guide seat 16, which helps to improve the efficiency of installation and disassembly.

[0034] The mounting components include two clamping plates 22 slidably disposed on the surface of the mounting base plate 11. Positioning rods 23 for insertion into mounting holes on the surface of the load-bearing wall are distributed on the upper end of the mounting base plate 11 where the clamping plates 22 are located. A transmission notch 25 is provided on the mounting base plate 11, and two clamping sliders 26 are fitted into the transmission notch 25. The clamping sliders 26 are connected to the clamping plates 22 via connecting rods. The clamping sliders 26 are threaded onto a clamping screw 27. The end of the clamping screw 27 passes through the mounting base plate 11 and is connected to an installation handle 24. The clamping screw 27 has two threaded areas with opposite directions of rotation. The installation handle 24 drives the clamping screw 27 and the clamping sliders 26 to rotate relative to each other. Due to the action of the threads, the two clamping sliders 26 move the clamping plates 22 closer to or further away, thereby adjusting the clamping distance for installation on load-bearing walls of different widths.

[0035] Example 2

[0036] The difference from Embodiment 1 is that the upper end of the mounting base plate 11 is also provided with multiple sound-emitting units corresponding to the positions of the mounting vertical plate 34. When energy absorption occurs, the sound-emitting units will emit sound, and by listening to the sound, it can be determined whether the friction component 19 needs to be replaced. Each sound-emitting unit includes a lever 49, which is rotatably connected to the upper end of the fulcrum rod 50. The fulcrum rod 50 is located at one-third of the position of the lever 49, and the lower end of the fulcrum rod 50 is fixedly connected to the mounting base plate 11. One end of the lever 49 is provided with a pin, which matches two actuating clips 51 on the side of the docking base plate 32. The other end of the lever 49 is provided with a striking ball 47, and a metal sound-emitting plate 46 is provided above the striking ball 47. The metal sound-emitting plate 46 is connected to the mounting base plate 11 through the column 48. When the product absorbs vibration energy, the docking base plate 32 will move downward. At this time, the actuating clamp 51 will press one end of the lever 49 to move downward, and the striking ball 47 at the other end of the lever 49 will move upward, thereby striking the metal sound-emitting plate 46 and producing a sound. Each metal sound-emitting plate 46 produces a different sound, forming a sound-producing structure. In this way, the sound level can be judged to determine whether maintenance work needs to be performed.

[0037] The lever 49 has an indicator arrow at its end, and the column 48 has a scale strip on its surface. By observing the position of the scale strip and the indicator arrow, it can be determined whether the friction component 19 needs maintenance in order to maintain the damping performance of the friction component 19.

[0038] The above embodiment discloses a friction damper. In actual use, two mounting plates 11 are installed at the upper and lower ends of the load-bearing wall using mounting components. Then, the friction element 19 is installed between the mating base plate 32 and the mounting plates 11. When an earthquake or strong wind occurs, the building will shake, and the dislocation of the load-bearing wall will cause a change in the distance between the upper and lower mounting plates 11. At this time, the piston block inside the damping piston cylinder 12 will change, and the oil inside the damping piston cylinder 12 will be sent into the main distribution pipe 15. The oil in the main distribution pipe 15 will enter the auxiliary piston cylinder 30 along the distribution pipe 29, and the piston block in the auxiliary piston cylinder 30 will... The pressure output rod 31 is pushed, causing it to move downward. The upper pressure plate 37 and the first friction plate 38 below the pressure output rod 31 are also forced to move downward. The friction protrusion 39 and the friction groove 41 work together to move the first friction plate 38 and the second friction plate 43 away from each other, so that the pressure is absorbed by the damping spring 45. In this way, friction damping can be used to absorb the impact force of the deformation of the load-bearing wall. When maintenance is required, the worm gear 35 is rotated by the maintenance handle 28. The worm gear 35 works with the worm wheel 36 to rotate the cam 33. The cam 33 will generate a thrust on the transmission pin 52, thereby causing the docking base plate 32 to move upward and release the pressure on the friction part 19, thus facilitating later replacement.

[0039] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A friction damper, comprising two mounting plates (11), each mounting plate (11) having mounting components for mounting it to the end of a load-bearing wall, and a second connecting arm (21) at the lower end of the upper mounting plate (11). Its features are, The upper end of the mounting plate (11) on the lower side is provided with a first connecting arm (13), the upper end of the first connecting arm (13) is rotatably connected to the tail of the damping piston cylinder (12), and the damping piston cylinder (12) is filled with oil. The damping piston cylinder (12) has a piston block that slides inside. The piston rod at the other end of the piston block is rotatably connected to the second connecting arm (21). The side of the damping piston cylinder (12) is connected to a diversion pipe (15) through a connecting pipe (14). The two ends of the diversion pipe (15) are connected and fixed to the mounting base plate (11) through positioning brackets (20). Multiple damping components (17) are connected to the lower side of the diversion pipe (15). The damping component (17) includes a hydraulic transmission component (18), which is located on one side of the mounting vertical plate (34) at the upper end of the mounting base plate (11). The hydraulic transmission component (18) includes an auxiliary piston cylinder (30). The oil inlet at the upper end of the auxiliary piston cylinder (30) is connected to the main branch pipe (15) through the branch pipe (29). The piston block inside the auxiliary piston cylinder (30) is connected to the pressure output rod (31). The lower end of the pressure output rod (31) extends out of the auxiliary piston cylinder (30) and is connected to the docking base plate (32). A friction component (19) for providing damping is provided between the lower end of the docking base plate (32) and the upper end of the mounting base plate (11). A temporary support component for lifting the docking base plate (32) is also provided on the mounting vertical plate (34). The temporary support includes a worm gear (36) rotatably mounted on the side of the mounting vertical plate (34). The central shaft of the worm gear (36) passes through the mounting vertical plate (34) and is connected to the cam (33). The side of the docking base plate (32) is provided with a transmission pin (52) corresponding to the cam (33). A worm (35) is meshed on the upper side of the worm gear (36). The worm (35) is rotatably mounted on the mounting side block on the surface of the mounting vertical plate (34). The end of the worm (35) is connected to a maintenance handle (28) for driving its rotation. The friction component (19) includes a first friction plate (38) and a second friction plate (43). The friction surface of the first friction plate (38) is provided with a plurality of friction protrusions (39), and the friction surface of the second friction plate (43) is provided with a plurality of friction grooves (41). The friction protrusions (39) cooperate with the friction grooves (41). The ends of the second friction plate (43) and the first friction plate (38) are respectively provided with a through hole. A locking bolt (44) is provided at the through hole position. A damping spring (45) is sleeved between the locking bolt (44) and the second friction plate (43). The lower end of the second friction plate (43) is connected to the lower pressure plate (42). The lower pressure plate (42) is in abutting contact with the upper end of the mounting base plate (11). The upper end of the first friction plate (38) is connected to the upper pressure plate (37). The upper pressure plate (37) matches the positioning notch at the lower end of the docking base plate (32).

2. The friction damper according to claim 1, characterized in that, The upper end of the lower pressure plate (42) is provided with a buffer pad (40) corresponding to the end of the first friction plate (38).

3. The friction damper according to claim 1, characterized in that, The upper end of the mounting plate (11) where the friction element (19) is located is provided with a guide seat (16), which is matched with the lower pressure plate (42).

4. The friction damper according to claim 1, characterized in that, The mounting components include two clamping plates (22) that are slidably disposed on the surface of the mounting base plate (11). The upper end of the mounting base plate (11) where the clamping plates (22) are located has positioning rods (23) for insertion into mounting holes on the surface of the load-bearing wall. The mounting base plate (11) has a transmission notch (25). Two clamping sliders (26) are fitted in the transmission notch (25). The clamping sliders (26) are connected to the clamping plates (22) through connecting rods. The clamping sliders (26) are threaded onto the clamping screw (27). The end of the clamping screw (27) passes through the mounting base plate (11) and is connected to the mounting handle (24). The clamping screw (27) has two threaded areas with opposite directions of rotation.

5. The friction damper according to claim 1, characterized in that, The upper end of the mounting base plate (11) is also provided with multiple sound-emitting units corresponding to the position of the mounting vertical plate (34). When energy is absorbed, the sound-emitting unit will emit a sound. By listening to the sound, it can be determined whether the friction part (19) needs to be replaced. The sound-emitting unit includes a lever (49). The lever (49) is rotatably connected to the upper end of the fulcrum rod (50). The fulcrum rod (50) is located at one-third point of the lever (49). The lower end of the fulcrum rod (50) is connected and fixed to the mounting base plate (11). One end of the lever (49) is provided with a pin. The pin matches two actuating clips (51) on the side of the docking base plate (32). The other end of the lever (49) is provided with a striking ball (47). A metal sound-emitting plate (46) is provided above the striking ball (47). The metal sound-emitting plate (46) is connected to the mounting base plate (11) through a column (48).

6. The friction damper according to claim 5, characterized in that, The lever (49) has an indicator arrow at its end, and the column (48) has a scale bar on its surface corresponding to the indicator arrow.

7. A method for installing the friction damper according to any one of claims 1-6, characterized in that, Includes the following steps: Step 1: Install the two mounting plates (11) at the upper and lower ends of the load-bearing wall using the mounting components, and then install the friction element (19) between the mating base plate (32) and the mounting plate (11); Step 2: When an earthquake or strong wind occurs, the building will shake. At this time, the load-bearing wall will be displaced at the break point, and the distance between the upper and lower mounting plates (11) will change. At this time, the piston block inside the damping piston cylinder (12) will change, and the oil inside the damping piston cylinder (12) will be sent into the main diversion pipe (15). The oil in the main diversion pipe (15) will enter the auxiliary piston cylinder (30) along the diversion pipe (29). The piston block in the auxiliary piston cylinder (30) will be pushed, thereby causing the pressure output rod (31) to move downward. The upper pressure plate (37) and the first friction plate (38) below the pressure output rod (31) will be forced to move downward. The friction protrusion (39) and the friction groove (41) will cooperate to make the first friction plate (38) and the second friction plate (43) move away from each other, thereby causing the pressure to be absorbed by the damping spring (45). Step 3: When maintenance is required, the worm (35) is rotated by the maintenance handle (28). The worm (35) and the worm wheel (36) work together to rotate the cam (33). The cam (33) will generate a thrust on the transmission pin (52), thereby causing the docking base plate (32) to move upward and cancel the tight pressure on the friction part (19), thus facilitating the replacement later.

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