A new type of viscous damper

Abstract

The present invention discloses a novel viscous damper, which relates to the field of viscous dampers and includes a housing and a piston rod. The piston rod is slidably connected to the housing. The housing is filled with viscous fluid. Heat dissipation mechanisms are symmetrically fixed to the front and rear of the housing. A first piston is fixed to the piston rod, and the first piston is slidably connected within the housing. A second piston and a third piston are respectively arranged on the side of the first piston from left to right. Throttle holes are formed in the first piston, the second piston, and the third piston, and the diameters of the throttle holes on the first piston, the second piston, and the third piston gradually decrease. In the actual use process of this novel viscous damper, by the movement of a group of pistons or the synchronous movement of multiple groups of pistons, the damping requirements for earthquakes of different intensities can be adapted, with higher adaptability, so as to better meet the actual use requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of viscous dampers, and specifically to a novel viscous damper. Background Technique

[0002] Viscous dampers are widely used in civil engineering. Their seismic resistance is mainly achieved through the throttling resistance generated by viscous fluid passing through throttle holes, mainly suppressing the structural vibration caused by earthquakes or wind vibrations to ensure the stability of the structure;

[0003] In the actual use process of existing viscous dampers, since the throttling resistance they generate is affected by the diameter of the throttle hole, that is, the larger the aperture, the smaller the throttling resistance, and the smaller the aperture, the larger the throttling resistance. In existing viscous dampers, the size of the throttle hole is fixed. As a result, in the actual use process, a throttle hole structure with a smaller aperture is mainly used to cope with the seismic resistance of medium and large earthquakes. For small earthquakes, due to the large throttling resistance of the throttle hole with a small aperture, the device can only work in a small range or cannot work, resulting in poor seismic resistance effect of the device for small earthquakes. Therefore, in view of the above problems, a novel viscous damper is designed to better meet the actual use requirements. Summary of the Invention

[0004] The purpose of the present invention is to provide a novel viscous damper to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A novel viscous damper, including a housing and a piston rod. The piston rod is slidably connected to the housing. The housing is filled with viscous fluid. Heat dissipation mechanisms are symmetrically fixed on the front and back sides of the housing. A first piston is fixed on the piston rod. The first piston is slidably connected in the housing. A second piston and a third piston are respectively arranged on the side of the first piston from left to right. Throttle holes are provided on the first piston, the second piston, and the third piston, and the diameters of the throttle holes on the first piston, the second piston, and the third piston gradually decrease. The second piston and the third piston are slidably connected to the housing, and the second piston and the third piston are in contact with the limiting ring to achieve limiting. A push rod is fixed on both the first piston and the second piston. A limiting plate is fixed on the push rod. The limiting plate is slidably connected to the sealing cylinder. The sealing cylinders are respectively fixed on the second piston and the third piston. The sealing cylinder is connected to the limiting mechanism. Through the throttling resistance generated by the sliding between the first piston and the housing, primary seismic resistance is achieved. Through the throttling resistance generated by the sliding between the first piston and the second piston and the housing, secondary seismic resistance is achieved. Through the throttling resistance generated by the sliding between the first piston, the second piston, and the third piston and the housing, tertiary seismic resistance is achieved, meeting the seismic resistance requirements of different levels of earthquakes.

[0006] Preferably, heat dissipation teeth are symmetrically fixed on the front and back of the outer shell, and the heat dissipation teeth are evenly distributed on the outer shell. A limiting ring is fixed inside the outer shell. Through the action of the heat dissipation teeth, the heat exchange area of the outer shell can be increased, so that the rapid heat dissipation during the operation of the device can be realized, and the influence of the viscous fluid in the outer shell on the fluidity of the viscous fluid due to excessive temperature can be avoided.

[0007] Preferably, both the outer shell and the piston rod are connected to the mounting seat through pin shafts, and the height of the mounting seat is greater than the height of the outer shell. Through the action of the mounting seat, the installation and fixation of the entire device can be conveniently realized, and the stability of the device can be ensured.

[0008] Preferably, the limiting mechanism includes a movable block, a spring, a guide rod, a positioning plate, a connecting rod and a limiting rod. The movable block is arranged in the sealing cylinder, and the distance between the movable block and the ejector rod is less than the distance between the limiting plate and the sealing cylinder. A spring is fixed between the movable block and the sealing cylinder. By limiting the distance between the movable block and the ejector rod, a basic guarantee for the normal operation of the device can be provided, and through the action of the spring, a basic acting force for the automatic reset of the movable block can be provided.

[0009] Preferably, a guide rod is fixed on the movable block, and the guide rod is slidably connected to the sealing cylinder and the third piston respectively. A positioning plate is fixed on the guide rod, and the positioning plate contacts the sealing cylinder to achieve a positioning effect. When the movable block moves, the sliding guiding effect between the guide rod and the sealing cylinder and the third piston can ensure the stability of the movement of the movable block, and the limiting effect of the positioning plate contacting the sealing cylinder can limit the moving distance of the movable block to ensure the normal operation of the device.

[0010] Preferably, one end of the guide rod is rotatably connected to one end of the connecting rod, and the other end of the connecting rod is rotatably connected to the limiting rod. When the guide rod is stressed and moves, the transmission effect of the connecting rod can provide a basic acting force for the movement of the limiting rod, so as to ensure the normal operation of the device.

[0011] Preferably, the limiting rod is slidably connected to the third piston, and the limiting rod is snap-fitted to the outer shell. When the limiting rod moves, the sliding guiding effect between the limiting rod and the third piston can ensure the stability of the movement of the limiting rod. The snap-fitting effect between the limiting rod and the outer shell can provide a basic guarantee for the positioning of the third piston, so as to ensure the normal operation of the device.

[0012] Preferably, the heat dissipation mechanism includes a fixing frame, a rotating shaft, a gear, a fan blade, a protective cover, a rack and a fixing plate. The fixing frames are symmetrically fixed on the housing in the front and back, and rotatable rotating shafts are equidistantly installed on the fixing frames. One end of the rotating shaft is fixed to the gear, and the other end of the rotating shaft is fixed to the fan blade. The fan blades are angularly distributed about the center of the rotating shaft and are arranged outside the heat dissipation teeth. Through the rotation of the fan blades, a flow disturbance effect can be achieved, thereby accelerating the air flow around the heat dissipation teeth and further ensuring the heat dissipation effect of the device.

[0013] Preferably, a protective cover is arranged outside the fan blade, and the protective cover and the rotating shaft are distributed in a one-to-one correspondence. Through the function of the protective cover, the protective effect of the fan blade can be achieved, avoiding damage to the fan blade due to knocking during the installation or transportation of the device and ensuring the integrity of the device.

[0014] Preferably, the gear and the rack are meshed, and the racks are symmetrically fixed on the piston rod in the front and back. The rack and the fixing plate are slidably connected, and the fixing plate is fixed on the fixing frame. When the piston rod moves to drive the rack to move, with the sliding guiding function between the rack and the fixing plate, the stability of the rack movement can be ensured. With the meshing transmission function between the rack and the gear, a basic driving force can be provided for the rotation of the rotating shaft and the fan blade, ensuring the normal operation of the device.

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

[0016] 1. For this new viscous damper, by arranging throttle holes with different apertures on multiple pistons, during actual use, through the movement of a single piston or the synchronous movement of multiple pistons, it can adapt to the shock absorption requirements of earthquakes of different intensities, with higher adaptability, and thus can better meet the actual use needs. Specifically, when the piston rod moves to drive the first piston to move alone, since the throttle hole on the first piston is the largest, the throttle resistance generated by its movement can meet the earthquake resistance requirements of small earthquakes. When the first piston and the second piston move synchronously, since the throttle aperture on the second piston is moderate, the throttle resistance generated by its movement can meet the earthquake resistance requirements of medium earthquakes. When the first piston, the second piston and the third piston move synchronously, since the throttle aperture on the third piston is the smallest, the throttle resistance generated by its movement can meet the earthquake resistance requirements of large earthquakes;

[0017] 2. The novel viscous damper adopts a linkage type rapid heat dissipation mechanism, which can achieve the rapid air-cooling heat dissipation effect of the device, thereby avoiding the influence of excessive device temperature on the fluidity of the viscous fluid during the operation of the device. Specifically, during the operation of the device, due to the friction and throttling damping effects generated by the viscous fluid during the flow process with the piston, the kinetic energy is converted into heat energy. At this time, the heat dissipation teeth can increase the heat exchange area, and with the cooperation of the piston rod, rack and gear, the fan blade rotates, and the spoiler effect is achieved through the fan blade to accelerate the air flow outside the heat dissipation teeth, thereby ensuring the heat dissipation effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a front view three-dimensional structure schematic diagram of the whole device of the present invention;

[0019] Figure 2 is a front view sectional three-dimensional structure schematic diagram of the whole device of the present invention;

[0020] Figure 3 is a front view sectional three-dimensional structure schematic diagram of the housing of the present invention;

[0021] Figure 4 is a side view sectional three-dimensional structure schematic diagram of the housing of the present invention;

[0022] Figure 5 is a front view sectional three-dimensional structure schematic diagram of the second piston of the present invention;

[0023] Figure 6 is a three-dimensional structure schematic diagram composed of the third piston and the limiting mechanism of the present invention;

[0024] Figure 7 is a three-dimensional structure schematic diagram of the heat dissipation mechanism of the present invention.

[0025] In the figure: 1. Housing; 101. Heat dissipation teeth; 102. Limiting ring; 2. Piston rod; 3. Mounting seat; 4. First piston; 5. Second piston; 6. Third piston; 7. Thrust rod; 701. Limiting plate; 8. Sealing cylinder; 9. Limiting mechanism; 901. Movable block; 902. Spring; 903. Guide rod; 904. Positioning plate; 905. Connecting rod; 906. Limiting rod; 10. Heat dissipation mechanism; 1001. Fixed frame; 1002. Rotating shaft; 1003. Gear; 1004. Fan blade; 1005. Protective cover; 1006. Rack; 1007. Fixed plate. DETAILED DESCRIPTION OF THE INVENTION

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] Please refer to Figures 1-7 , the present invention provides a technical solution: a novel viscous damper, including a housing 1 and a piston rod 2. The piston rod 2 is slidably connected to the housing 1. The housing 1 is filled with viscous fluid. Heat dissipation mechanisms 10 are symmetrically fixed on the front and back sides of the housing 1. A first piston 4 is fixed on the piston rod 2. The first piston 4 is slidably connected within the housing 1. A second piston 5 and a third piston 6 are respectively arranged on the side of the first piston 4 from left to right. Throttle holes are provided on the first piston 4, the second piston 5, and the third piston 6, and the diameters of the throttle holes on the first piston 4, the second piston 5, and the third piston 6 gradually decrease. The second piston 5 and the third piston 6 are slidably connected to the housing 1, and the second piston 5 and the third piston 6 are in contact with the limiting ring 102 to achieve limiting. Top rods 7 are fixed on both the first piston 4 and the second piston 5. A limiting plate 701 is fixed on the top rod 7. The limiting plate 701 is slidably connected to a sealing cylinder 8. The sealing cylinders 8 are respectively fixed on the second piston 5 and the third piston 6. The sealing cylinder 8 is connected to a limiting mechanism 9. Through the throttling resistance generated by the sliding between the first piston 4 and the housing 1, primary earthquake resistance is achieved. Through the throttling resistance generated by the sliding between the first piston 4 and the second piston 5 and the housing 1, secondary earthquake resistance is achieved. Through the throttling resistance generated by the sliding between the first piston 4, the second piston 5, and the third piston 6 and the housing 1, tertiary earthquake resistance is achieved, meeting the earthquake resistance requirements of earthquakes of different intensities.

[0028] Both the housing 1 and the piston rod 2 are connected to the mounting seat 3 through pins, and the height of the mounting seat 3 is greater than the height of the housing 1; the limiting mechanism 9 includes a movable block 901, a spring 902, a guide rod 903, a positioning plate 904, a connecting rod 905, and a limiting rod 906. The movable block 901 is arranged within the sealing cylinder 8, and the distance between the movable block 901 and the top rod 7 is less than the distance between the limiting plate 701 and the sealing cylinder 8. A spring 902 is fixed between the movable block 901 and the sealing cylinder 8; a guide rod 903 is fixed on the movable block 901, and the guide rod 903 is slidably connected to the sealing cylinder 8 and the third piston 6 respectively, and a positioning plate 904 is fixed on the guide rod 903. At the same time, the positioning plate 904 is in contact with the sealing cylinder 8 to achieve a positioning effect; one end of the guide rod 903 is rotatably connected to one end of the connecting rod 905, and the other end of the connecting rod 905 is rotatably connected to the limiting rod 906; the limiting rod 906 is slidably connected to the third piston 6, and the limiting rod 906 is snap-fitted to the housing 1;

[0029] When using this new viscous damper, as Figures 1-7 shown, first install and fix the entire device through the mounting base 3. After installation, when a small earthquake (earthquake magnitude ≤ 4) occurs, at this time, the piston rod 2 is stressed and moves, thereby synchronously driving the first piston 4 to move, so that the first piston 4 moves in the viscous fluid inside the outer shell 1. With the throttling resistance generated by the viscous fluid flowing through the throttle holes on the first piston 4, it can meet the shock absorption effect of small earthquakes. When a medium earthquake (4 < earthquake magnitude < 6) occurs, at this time, the piston rod 2 is stressed and moves, thereby synchronously driving the first piston 4 to move. At this time, since the throttling resistance generated by the viscous fluid flowing through the throttle holes on the first piston 4 is insufficient to meet the seismic requirements, the moving distances of the first piston 4 and the piston rod 2 increase. And when the first piston 4 moves, it synchronously drives the ejector rod 7 on the first piston 4 to move. When the ejector rod 7 contacts the movable block 901, at this time, the movable block 901 is stressed and moves. With the sliding guiding effect between the guiding rod 903 and the sealing cylinder 8 and the second piston 5, the stability of the movement of the movable block 901 can be ensured. At this time, the spring 902 is stressed and contracts. When the guiding rod 903 slides, with the transmission effect of the connecting rod 905, the limiting rod 906 is stressed and moves. When the limiting plate 701 contacts the sealing cylinder 8 on the second piston 5, at this time, the positioning plate 904 contacts the sealing cylinder 8 on the second piston 5 synchronously, and the limiting rod 906 just separates from the outer shell 1, thereby releasing the limiting effect on the second piston 5. At this time, the piston rod 2 and the first piston 4 continue to move, thereby synchronously driving the second piston 5 to move. Since the aperture of the throttle hole on the second piston 5 is smaller than that of the throttle hole on the first piston 4, the viscous fluid flowing through the throttle hole on the second piston 5 can generate a greater throttling resistance, thereby meeting the shock absorption effect of medium earthquakes. When a large earthquake (6 ≤ earthquake magnitude < 8) occurs, at this time, the throttling resistance generated by the viscous fluid flowing through the throttle hole on the second piston 5 is insufficient to meet the shock absorption requirements, so that the moving distances of the second piston 5, the first piston 4, and the piston rod 2 further increase. According to the above principle, when the limiting plate 701 on the ejector rod 7 installed on the second piston 5 contacts the sealing cylinder 8 on the third piston 6, the limiting effect on the third piston 6 can be released, so that the third piston 6 moves with the second piston 5 and the first piston 4. Since the aperture of the throttle hole on the third piston 6 is the smallest, when the third piston 6 moves, the viscous fluid flowing through the throttle hole on the third piston 6 can further increase the throttling resistance to meet the shock absorption effect of large earthquakes. In summary, this new viscous damper can adapt to the shock absorption effects of earthquakes of different intensities through the cooperation of multiple groups of pistons and throttle holes with different apertures, so as to better meet the actual use requirements;

[0030] There are symmetrically fixed heat dissipation teeth 101 on the front and back of the housing 1, and the heat dissipation teeth 101 are evenly distributed on the housing 1. A limiting ring 102 is fixed inside the housing 1. The heat dissipation mechanism 10 includes a fixing frame 1001, a rotating shaft 1002, a gear 1003, a fan blade 1004, a protective cover 1005, a rack 1006 and a fixing plate 1007. The fixing frame 1001 is symmetrically fixed on the front and back of the housing 1, and rotatable rotating shafts 1002 are equidistantly installed on the fixing frame 1001. One end of the rotating shaft 1002 is fixed to the gear 1003, and the other end of the rotating shaft 1002 is fixed to the fan blade 1004. The fan blades 1004 are equally angularly distributed about the center of the rotating shaft 1002, and the fan blades 1004 are arranged outside the heat dissipation teeth 101. A protective cover 1005 is arranged outside the fan blade 1004, and the protective cover 1005 and the rotating shaft 1002 are distributed in a one-to-one correspondence. The gear 1003 is meshed with the rack 1006, and the rack 1006 is symmetrically fixed on the piston rod 2 at the front and back, and the rack 1006 is slidably connected to the fixing plate 1007, and the fixing plate 1007 is fixed on the fixing frame 1001;

[0031] During the shock absorption process of the device operation, as Figures 1-7 shown, due to the friction and throttling damping effects generated by the viscous fluid during the flow process with the piston, the kinetic energy is converted into heat energy, causing the temperature of the device to increase. At this time, the heat dissipation teeth 101 can effectively increase the heat exchange area of the device. When the piston rod 2 moves, it can synchronously drive the rack 1006 to move. With the sliding guiding effect between the rack 1006 and the fixing plate 1007, the stability of the movement of the rack 1006 can be ensured. Then, with the meshing transmission effect between the rack 1006 and the gear 1003, the rotating shaft 1002 and the fan blade 1004 rotate. Through the rotation of the fan blade 1004, the air around the heat dissipation teeth 101 can be turbulently flowed, thereby accelerating the air flow around the heat dissipation teeth 101, and further ensuring the heat dissipation effect of the device, effectively avoiding the influence of the excessive temperature of the device on the fluidity of the viscous fluid inside the housing 1, and ensuring the stability of the device. This is the working principle of this new type of viscous damper.

[0032] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirits of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel viscous damper, comprising a housing (1) and a piston rod (2), wherein the housing (1) is slidably connected to the piston rod (2), and the housing (1) is filled with a viscous fluid, characterized in that: A heat dissipation mechanism (10) is symmetrically fixed to the outer side of the housing (1) in front and back directions. A first piston (4) is fixed to the piston rod (2). The first piston (4) is slidably connected to the housing (1). A second piston (5) and a third piston (6) are respectively arranged on the sides of the first piston (4) from left to right. The first piston (4), the second piston (5) and the third piston (6) are all provided with throttle holes. The diameters of the throttle holes on the first piston (4), the second piston (5) and the third piston (6) are gradually reduced. The third piston (6) is slidably connected to the housing (1), and the second piston (5) and the third piston (6) are in contact with a limiting ring (102) to achieve limiting. A push rod (7) is fixed to the first piston (4) and the second piston (5), and a limiting plate (701) is fixed to the push rod (7). The limiting plate (701) is slidably connected to the sealing cylinder (8). The sealing cylinder (8) is respectively fixed to the second piston (5) and the third piston (6). The sealing cylinder (8) is connected to the limiting mechanism (9) and the limiting mechanism (9) is connected to the first piston (4) and the second piston (5). The structure (9) comprises a movable block (901), a spring (902), a guide rod (903), a positioning plate (904), a connecting rod (905) and a limiting rod (906); the movable block (901) is arranged in the sealing cylinder (8); the distance between the movable block (901) and the top rod (7) is smaller than the distance between the limiting plate (701) and the sealing cylinder (8); a spring (902) is fixed between the movable block (901) and the sealing cylinder (8); a guide rod (903) is fixed on the movable block (901); and the guide rod (906) is fixed to the movable block (901). 03) are respectively connected to the sealing cylinder (8) and the third piston (6) in a sliding manner, and a positioning plate (904) is fixed on the guide rod (903), and the positioning plate (904) is in contact with the sealing cylinder (8) to achieve a positioning effect. The guide rod (903) is rotatably connected to one end of the connecting rod (905), and the other end of the connecting rod (905) is rotatably connected to the limit rod (906), the limit rod (906) and the third piston (6) are slidably connected, and the limit rod (906) and the housing (1) are snap-fitted.

2. A novel viscous damper according to claim 1, characterized in that: The outer shell (1) is symmetrically fixed with heat dissipation teeth (101) at the front and rear ends, and the heat dissipation teeth (101) are evenly distributed on the outer shell (1). A limiting ring (102) is fixed inside the outer shell (1).

3. A novel viscous damper according to claim 1, characterized in that: The housing (1) and the piston rod (2) are connected to a mounting seat (3) via a pin, and the height of the mounting seat (3) is greater than the height of the housing (1).

4. A novel viscous damper according to claim 1, characterized in that: The heat dissipation mechanism (10) comprises a fixing frame (1001), a rotating shaft (1002), a gear (1003), a fan blade (1004), a protective cover (1005), a rack (1006) and a fixing plate (1007); the fixing frame (1001) is fixed to the housing (1) in a front-to-back symmetrical manner; rotatable rotating shafts (1002) are evenly spacedly mounted on the fixing frame (1001); one end of the rotating shaft (1002) is fixed to the gear (1003); and the other end of the rotating shaft (1002) is fixed to the fan blade (1004); the fan blades (1004) are distributed at equal angles with respect to the center of the rotating shaft (1002); and the fan blades (1004) are arranged outside the heat dissipation teeth (101).

5. A novel viscous damper according to claim 4, characterized in that: A protective cover (1005) is disposed on the outer side of the fan blade (1004), and the protective cover (1005) and the rotating shaft (1002) are distributed in a one-to-one correspondence.

6. A novel viscous damper according to claim 5, characterized in that: The gear (1003) and the rack (1006) are meshedly connected, and the rack (1006) is symmetrically fixed on the piston rod (2) in the front and rear directions, and the rack (1006) and the fixed plate (1007) are slidably connected, and the fixed plate (1007) is fixed on the fixed frame (1001).

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