A device for releasing the power of a tonnage damper based on hydraulic mechanism

Abstract

The present application relates to a device for outputting force of a small-tonnage damper based on hydraulic mechanism, belonging to the technical field of vibration control. The device comprises a connecting lug plate, a friction plate, a rectangular friction sheet, a small-tonnage damper, a piston cylinder, a helical rack, a helical gear, a rotating bearing, a fisheye bearing, a hinged support, a counterforce frame, a barrel and the like. When in a loading state, the small-tonnage damper moves to drive the helical rack to move, the helical gear engaged with the helical rack rotates, the fisheye bearing moves vertically downward, the amplified force is transmitted to the piston cylinder through the mechanical device composed of the helical gear and the rotating bearing and the fisheye bearing, and the hydraulic pressure in the barrel is amplified to be converted into the normal pressure at the friction plate, and the friction force is generated by the movement of the friction plate. When in an unloading state, the small-tonnage damper drives the helical rack and the helical gear to rotate again, the output force is extruded to the piston cylinder through the fisheye bearing, the hydraulic pressure in the barrel is amplified to be converted into the normal pressure at the friction plate, and the friction force is generated by the movement of the friction plate.

Description

Technical Field

[0001] This invention relates to a damper output device, and more particularly to a device for amplifying the output of a small-tonnage damper based on a hydraulic mechanism, belonging to the field of vibration control technology. Background Technology

[0002] Earthquakes, as a severe natural disaster, impact human life and social development. Research shows that incorporating damping devices into structures can more effectively dissipate the energy input from earthquakes. Friction dampers have advantages such as simple construction, easy installation, and high stability. However, ordinary friction dampers only possess a constant slip force. In seismic resistance, if the friction force set in the energy dissipation device is too small, its energy dissipation capacity will be insufficient under large earthquakes; if the set friction force is too large, it will be ineffective under small earthquakes, causing the structure to fail before the damper, thus negating its damping function.

[0003] For example, CN209892675U in the prior art has the above-mentioned problems, and it discloses a novel friction damper. It includes an inner friction plate, two outer friction plates, two side plates, and a base plate. The main bodies of the inner and outer friction plates are rectangular plates. One side of the inner friction plate is fixed to the base plate, and the two outer friction plates are sandwiched between the two sides of the inner friction plate. CN115075417A discloses a two-stage friction damper; it includes several pressure plates, friction steel plates of the same number as the pressure plates, and a limiting plate one less than the number of pressure plates. Both the pressure plates and friction steel plates have a head and a body, and each head has a pin hole. The body of each friction steel plate is stacked between the limiting plate and the body of the pressure plate. The pressure plates, limiting plates, and friction steel plates are connected together by a fastening bolt assembly. By cooperating with the upper limit block of the limiting plate and the upper limit block of the pressure plate, the number of surfaces participating in the friction can be changed under different earthquakes to achieve different damping force energy dissipation under different earthquake conditions. Summary of the Invention

[0004] To address the aforementioned deficiencies in the existing technology, this invention proposes a device for amplifying the output of a small-tonnage damper based on a hydraulic mechanism. This device amplifies the output of the small damper using a hydraulic mechanism, thereby achieving the purpose of changing the frictional output in existing technical solutions and overcoming the limitation that traditional friction dampers can only provide a constant frictional force.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A device for amplifying the output of a small-tonnage damper based on a hydraulic mechanism, the device comprising a connecting lug plate, a friction plate, a rectangular friction plate, a small-tonnage damper, a piston cylinder, a helical rack, a helical gear, a rotating bearing, a fisheye bearing, a hinged support, a reaction frame, a barrel, a fixed rod, a circular tray, and a base.

[0007] The connecting lug is connected to the friction plate and the small-tonnage damper by pins.

[0008] The rectangular friction plates are fixed on the upper and lower sides of the friction plate;

[0009] The small-tonnage damper is welded together with the top helical rack, and the helical gear meshes with the helical rack.

[0010] The helical gear and the rotating bearing are connected by bolts, and the fisheye bearing, the hinge support, and the rotating bearing are hinged by pins; the hinge support is welded to the piston cylinder as a whole; the piston cylinder is welded to the barrel body, and a movable piston is installed inside the piston cylinder; the upper part of the barrel body is in seamless contact with the reaction frame; the barrel body is placed on a circular tray, the circular tray presses on the rectangular friction plates, and the rectangular friction plates on the upper and lower sides are in contact with the circular tray and the base, respectively; the reaction frame and the fixing rod are connected by bolts, and the fixing rod is fixed to the base.

[0011] Furthermore, the base is fixed to the ground.

[0012] Furthermore, the helical gear fully meshes with the upper surface of the helical rack.

[0013] Furthermore, gaps are left in the connections between the rotating bearing, the fisheye bearing, and the hinged support to ensure that the rotating bearing and the hinged support can rotate around the fisheye bearing.

[0014] Furthermore, the barrel and piston cylinder are filled with hydraulic oil; in addition, there are radial baffles inside the barrel to constrain the deformation of the barrel, and there are oil passage holes on the baffles; and there is an annular thin-walled iron plate with reduced thickness at the bottom of the barrel.

[0015] Furthermore, the piston can move perpendicular to the barrel, ensuring that the force on the piston cylinder can be effectively transmitted to the hydraulic oil in the barrel. In addition, the ratio of the output area of ​​the annular thin-walled iron plate at the bottom of the barrel to the input area of ​​the piston cylinder, multiplied by the force transmission efficiency coefficient, is the amplification factor of the hydraulic amplification part. The force amplification factor can be changed by adjusting the output area of ​​the annular thin-walled iron plate and the input area of ​​the piston cylinder. In addition, the magnitude of the friction force of the device can be changed by changing the distance of the rotating bearing from the center of the helical gear, changing the ratio of the piston cylinder input area to the barrel output area, and adjusting the thickness of the annular thin-walled iron plate at the bottom of the barrel.

[0016] Furthermore, the connection between the piston cylinder and the barrel should be sealed to prevent internal hydraulic oil leakage, which would affect the force transmission effect.

[0017] Furthermore, the reaction frame is stably anchored to the barrel, and the upper part of the barrel is in seamless contact with the reaction frame without any gaps, in order to ensure good output effect.

[0018] Furthermore, the base has bolt holes to facilitate the installation of the reaction frame and the fixing rod.

[0019] The principle of this device is as follows:

[0020] When the device is installed on the structure, the left end is connected via a connecting lug, and the lower end is bolted to the base; the damping force output of the device is the sum of the output of the small-tonnage damper and the friction force at the friction plate after being amplified by the hydraulic amplification device.

[0021] When the device enters the loading stage, it is in its initial state. The helical rack welded to the small-tonnage damper moves forward, and the helical rack contacts and meshes with the helical gear. The connecting ear plate pushes the small-tonnage damper, which in turn pushes the helical rack. The helical gear meshing with the helical rack rotates and drives the fisheye bearing to squeeze the piston cylinder. After the hydraulic pressure in the barrel is amplified, the force is output at the thin-walled iron plate at the bottom of the barrel and converted into the positive pressure at the friction plate. The friction plate generates friction under the pull of the connecting ear plate.

[0022] When the device enters the unloading stage, the connecting lugs pull the small-tonnage damper backward. At this time, the helical rack welded to the small-tonnage damper moves backward. As the helical rack contacts and meshes with the helical gear, the helical gear rotates and drives the fisheye bearing to squeeze the barrel again. After the hydraulic pressure in the barrel is amplified, the force is output at the thin-walled iron plate and converted into the positive pressure at the friction plate. The friction plate generates friction under the pull of the connecting lugs.

[0023] Based on Pascal's principle, a hydraulic amplification tank can amplify the damping force of a small-tonnage damper, thereby increasing the output of the damper and improving energy dissipation.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] This device can significantly increase friction and increase the energy consumption of the damper. It can be applied to seismic isolation and damping structures and has a very broad application prospect.

[0026] This hydraulic amplification device for small dampers has the following advantages:

[0027] 1) It can amplify the frictional force, increase the energy dissipation effect of the damper, and maintain stable mechanical properties.

[0028] 2) The output device of the hydraulic amplification small damper can change the magnitude of the friction force by changing the distance between the rotating bearing and the center of the helical gear, changing the ratio of the piston cylinder input area to the barrel output area, and adjusting the thickness of the thin-walled iron plate at the bottom of the barrel.

[0029] 3) It solves the problem that traditional friction dampers can only provide constant friction force.

[0030] 4) When the small-tonnage damper is loaded or unloaded, the oil pressure inside the barrel always increases, so as to increase the damping force.

[0031] 5) For small-tonnage dampers, friction dampers, viscous dampers, etc. can be used, with a wide range of choices.

[0032] 6) The output force is amplified a second time through a mechanical device consisting of helical gears, rotating bearings, and fisheye bearings. Attached Figure Description

[0033] Figure 1 This is a structural diagram of the present invention;

[0034] Figure 2 This is a partial cross-sectional view of the present invention;

[0035] Figure 3 This is a structural diagram of the connecting lug plate;

[0036] Figure 4 This is a structural diagram of the friction plate;

[0037] Figure 5 This is a structural diagram of a rectangular friction plate;

[0038] Figure 6 This is a structural diagram of a small-tonnage damper;

[0039] Figure 7 This is a structural diagram of a piston cylinder;

[0040] Figure 8 This is a structural diagram of a helical rack;

[0041] Figure 9 This is a structural diagram of a helical gear;

[0042] Figure 10 This is a structural diagram of a rotating bearing;

[0043] Figure 11 This is a structural diagram of a fisheye bearing;

[0044] Figure 12 This is a structural diagram of a hinged support;

[0045] Figure 13 This is a structural diagram of the reaction frame;

[0046] Figure 14 This is a structural diagram of the barrel.

[0047] Figure 15 This is a structural diagram of the fixed rod;

[0048] Figure 16 This is a structural diagram of a circular tray;

[0049] Figure 17 This is a structural diagram of the base;

[0050] Figure 18 This is a structural diagram of a ring-shaped thin-walled iron plate;

[0051] Figure 19 This is the expected experimental hysteresis curve of the present invention. Detailed Implementation

[0052] The following is in conjunction with the appendix Figure 1-19 The present invention will be further described in detail below to facilitate a clear understanding of the invention, but these descriptions do not constitute a limitation thereof.

[0053] As attached Figure 1-19 As shown in the figure, this embodiment discloses a device for amplifying the output of a small-tonnage damper based on a hydraulic mechanism. The device includes a connecting lug 1, a friction plate 2, rectangular friction pads 3, a small-tonnage damper 4, a piston cylinder 5, a helical rack 6, a helical gear 7, a rotary bearing 8, a fisheye bearing 9, a hinge support 10, a reaction frame 11, a barrel 12, a fixing rod 13, a circular tray 14, and a base 15. The connecting lug 1 is connected to the friction plate 2 and the small-tonnage damper 4 by pins. Rectangular friction pads 3 are fixed on the upper and lower sides of the friction plate 2. The small-tonnage damper 4 is welded to the helical rack 6 at the top, and the helical gear 7 fully meshes with the upper surface of the helical rack 6. The helical gear 7 is bolted to the rotary bearing 8, and the fisheye bearing 9 is hinged to the hinge support 10 and the rotary bearing 8 by pins. The hinge support 10 is also welded to the piston cylinder 5. Piston cylinder 5 is welded to barrel body 12, and a movable piston is installed inside piston cylinder 5. The upper part of barrel body 12 is in seamless contact with reaction frame 11. Barrel body 12 is placed on circular tray 14, circular tray 14 presses on rectangular friction plates 3, and the upper and lower rectangular friction plates 3 are in contact with circular tray 14 and base 15 respectively. Reaction frame 11 is connected to fixed rod 13 by bolts, and fixed rod 13 is fixed to base 15. Base 15 is fixed to the ground.

[0054] like Figure 2As shown, the barrel 12 and piston cylinder 5 are filled with hydraulic oil 16. Furthermore, radial baffles are present inside the barrel 12 to constrain its deformation, and oil passages are present on the baffles. A thin-walled annular iron plate with reduced thickness is present at the bottom of the barrel 12. In this embodiment, the piston in piston cylinder 5 can move perpendicular to the barrel 12, ensuring that the force on piston cylinder 5 is effectively transmitted to the hydraulic oil 16 in the barrel 12. Moreover, the ratio of the output area of ​​the thin-walled annular iron plate at the bottom of the barrel 12 to the input area of ​​piston cylinder 5, multiplied by the force transmission efficiency coefficient, is the amplification factor of the hydraulic amplification section. The force amplification factor can be changed by adjusting the output area of ​​the thin-walled annular iron plate to the input area of ​​piston cylinder 5. Additionally, the magnitude of the frictional force of the device can be changed by altering the distance between the rotating bearing 8 and the center of the helical gear 7, changing the ratio of the input area of ​​piston cylinder 5 to the output area of ​​barrel 12, and adjusting the thickness of the thin-walled annular iron plate at the bottom of barrel 12.

[0055] like Figure 1-2 As shown, in this embodiment, gaps are left between the rotating bearing 8, the fisheye bearing 9, and the hinged support 10 to ensure that the rotating bearing 8 and the hinged support 10 can rotate around the fisheye bearing 9. Furthermore, the connection between the piston cylinder 5 and the barrel 12 should be sealed to prevent leakage of the internal hydraulic oil 16, which would affect the force transmission effect. The reaction frame 11 is stably anchored to the barrel 12, and the upper part of the barrel 12 is in seamless contact with the reaction frame 11 without any gaps to ensure good force output. The base 15 has bolt holes to facilitate the installation of the reaction frame 11 and the fixing rod 13.

[0056] This embodiment describes a device for amplifying the output of a small-tonnage damper based on a hydraulic mechanism. The various components are described below. Figure 3-18 As shown.

[0057] The principle of this device is as follows:

[0058] When the device is installed on the structure, the left end is connected via connecting lug 1, and the lower end is bolted to the base 15. The damping force output of the device is the sum of the output of the small-tonnage damper 4 and the friction force at the friction plate 2 after being amplified by the hydraulic amplification device.

[0059] When the device enters the loading stage, it is in the initial state of the device. The helical rack 6 welded to the small tonnage damper 4 moves forward. The helical rack 6 contacts and meshes with the helical gear 7. The connecting ear plate 1 pushes the small tonnage damper 4, which in turn pushes the helical rack 6. The helical gear 7 meshing with the helical rack 6 rotates and drives the fisheye bearing 9 to squeeze the piston cylinder 5. After the hydraulic pressure in the barrel 12 is amplified, the force is output at the thin-walled iron plate at the bottom of the barrel 12 and converted into the positive pressure at the friction plate 2. The friction plate 2 generates friction under the pull of the connecting ear plate 1.

[0060] When the device enters the unloading stage, the connecting lug 1 pulls the small tonnage damper 4 backward. At this time, the helical rack 6 welded on the small tonnage damper 4 moves backward. Since the helical rack 6 contacts and meshes with the helical gear 7, the helical gear 7 rotates and drives the fisheye bearing 9 to squeeze the barrel 12 again. After the hydraulic pressure in the barrel 12 is amplified, the force is output at the thin-walled iron plate and converted into the positive pressure at the friction plate 2. The friction plate 2 generates friction force under the pull of the connecting lug 1.

[0061] Based on Pascal's principle, the hydraulic amplification tank 12 can amplify the damping force of the small-tonnage damper 4, increase the output of the damper, and increase the energy consumption effect.

[0062] The expected test hysteresis curve for the device that amplifies the output of a small-tonnage damper based on a hydraulic mechanism is shown below. Figure 19 The overall magnification effect is significant.

[0063] 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 device for amplifying the output of a small-tonnage damper based on a hydraulic mechanism, characterized in that: The device for amplifying the output of a small-tonnage damper based on a hydraulic mechanism includes a connecting ear plate (1), a friction plate (2), a rectangular friction plate (3), a small-tonnage damper (4), a piston cylinder (5), a helical rack (6), a helical gear (7), a rotating bearing (8), a fish-eye bearing (9), a hinge support (10), a reaction frame (11), a barrel (12), a fixing rod (13), a circular tray (14), and a base (15). The connecting lug (1) is connected to the friction plate (2) and the small-tonnage damper (4) by pins; The rectangular friction plates (3) are fixed on the upper and lower sides of the friction plate (2); The small-tonnage damper (4) and the top helical rack (6) are welded together, and the helical gear (7) meshes with the helical rack (6); The helical gear (7) and the rotating bearing (8) are connected by bolts. The fisheye bearing (9) and the hinge support (10) and the rotating bearing (8) are hinged by pins. The hinge support (10) is welded to the piston cylinder (5). The piston cylinder (5) is welded to the barrel (12). A movable piston is installed inside the piston cylinder (5). The upper part of the barrel (12) is in seamless contact with the reaction frame (11). The barrel (12) is placed on the circular tray (14). The circular tray (14) presses on the rectangular friction plate (3). The rectangular friction plates (3) on the upper and lower sides are in contact with the circular tray (14) and the base (15) respectively. The reaction frame (11) and the fixed rod (13) are connected by bolts. The fixed rod (13) is fixed on the base (15). When the device enters the loading stage, it is in the initial state of the device. The helical rack (6) welded on the small tonnage damper (4) moves forward. The helical rack (6) contacts and meshes with the helical gear (7). The connecting ear plate (1) pushes the small tonnage damper (4), which in turn pushes the helical rack (6). The helical gear (7) meshing with the helical rack (6) rotates and drives the fish-eye bearing (9) to squeeze the piston cylinder (5). After the hydraulic pressure in the barrel (12) is amplified, the force is output at the thin-walled iron plate at the bottom of the barrel (12) and converted into the positive pressure at the friction plate (2). The friction plate (2) generates friction under the pull of the connecting ear plate (1). When the device enters the unloading stage, the connecting ear plate (1) pulls the small tonnage damper (4) backward. At this time, the helical rack (6) welded on the small tonnage damper (4) moves backward. Since the helical rack (6) contacts and meshes with the helical gear (7), the helical gear (7) rotates and drives the fish-eye bearing (9) to squeeze the barrel (12) again. After the hydraulic pressure in the barrel (12) is amplified, the force is output at the thin-walled iron plate and converted into the positive pressure at the friction plate (2). The friction plate (2) generates friction under the pull of the connecting ear plate (1). The hydraulic amplification barrel (12) based on Pascal's principle can amplify the damping force of the small-tonnage damper (4), increase the output of the damper, and increase the energy consumption effect.

2. A device for regulating the output of a tonnage damper based on hydraulic mechanism according to claim 1, characterized in that: The base (15) is fixed to the ground.

3. A device for regulating the output of a tonnage damper based on hydraulic mechanism according to claim 1, characterized in that: The helical gear (7) fully meshes with the upper surface of the helical rack (6).

4. The device for amplifying the output of a small-tonnage damper based on a hydraulic mechanism according to claim 1, characterized in that: The connection between the rotating bearing (8), the fish-eye bearing (9) and the hinged support (10) is left with a gap to ensure that the rotating bearing (8) and the hinged support (10) can rotate around the fish-eye bearing (9).

5. The device for amplifying the output of a small-tonnage damper based on a hydraulic mechanism according to claim 1, characterized in that: The barrel (12) and piston cylinder (5) are filled with hydraulic oil (16); in addition, there are radial baffles inside the barrel (12) to constrain the deformation of the barrel (12), and there are oil passage holes on the baffles. There is an annular thin-walled iron plate with reduced thickness at the bottom of the barrel (12).

6. The device for amplifying the output of a small-tonnage damper based on a hydraulic mechanism according to claim 5, characterized in that: The piston can move perpendicular to the barrel (12), ensuring that the force on the piston cylinder (5) can be effectively transmitted to the hydraulic oil (16) in the barrel (12). In addition, the ratio of the output area of ​​the annular thin-walled iron plate at the bottom of the barrel (12) to the input area of ​​the piston cylinder (5) multiplied by the force transmission efficiency coefficient is the amplification factor of the hydraulic amplification part. The amplification factor of the force can be changed by adjusting the output area of ​​the annular thin-walled iron plate and the input area of ​​the piston cylinder (5). In addition, the magnitude of the friction force of the device can be changed by changing the distance of the rotating bearing (8) from the center of the helical gear (7), changing the ratio of the input area of ​​the piston cylinder (5) to the output area of ​​the barrel (12), and adjusting the thickness of the annular thin-walled iron plate at the bottom of the barrel (12).

7. The device for amplifying the output of a small-tonnage damper based on a hydraulic mechanism according to claim 6, characterized in that: The connection between the piston cylinder (5) and the barrel (12) should be sealed to prevent leakage of internal hydraulic oil (16) and affect the force transmission effect.

8. The device for amplifying the output of a small-tonnage damper based on a hydraulic mechanism according to claim 1, characterized in that: The reaction frame (11) is anchored to the barrel (12) stably, and the upper part of the barrel (12) is in seamless contact with the reaction frame (11) without any gaps, so as to ensure good output effect.

9. The device for amplifying the output of a small-tonnage damper based on a hydraulic mechanism according to claim 1, characterized in that: The base (15) has bolt holes to facilitate the installation of the reaction frame (11) and the fixing rod (13).

10. A device for amplifying the output of a small-tonnage damper based on a hydraulic mechanism according to any one of claims 1-9, characterized in that: When the device is installed on the structure, the left end is connected by connecting ear plate (1), and the lower end is fixed by bolts through base (15); the damping force output of the device is the sum of the output of the small tonnage damper (4) and the friction force at the friction plate (2) after being amplified by the hydraulic amplification device.

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