Novel viscous damper

Abstract

The novel viscous damper relates to the field of viscous dampers and comprises a shell and a piston rod, the piston rod is slidably connected to the shell, the shell is filled with viscous fluid, heat dissipation mechanisms are symmetrically fixed to the front and the back of the outer side of the shell, a first piston is fixed to the piston rod, and a second piston is fixed to the piston rod. The first piston is connected into the shell in a sliding mode, the second piston and the third piston are arranged on the side edge of the first piston from left to right, throttling holes are formed in the first piston, the second piston and the third piston, and the diameters of the throttling holes in the first piston, the second piston and the third piston are gradually reduced. According to the novel viscous damper, the throttling holes with different hole diameters are formed in the multiple sets of pistons, in the actual use process, through movement of one set of pistons or synchronous movement of the multiple sets of pistons, the damping requirements of earthquakes of different degrees can be met, adaptability is higher, and therefore the actual use requirements can be better met.

Description

Technical Field

[0001] The invention relates to the technical field of viscous dampers, in particular to a novel viscous damper. Background Art

[0002] Viscous dampers are widely used in civil engineering. They mainly achieve anti-seismic effect through the throttling resistance generated by viscous fluid passing through the throttling hole. They mainly suppress structural vibration caused by earthquake or wind vibration to ensure the stability of the structure. In actual use, the throttling resistance generated by the existing viscous damper is affected by the diameter of the throttling hole, that is, the larger the hole diameter, the smaller the throttling resistance, and the smaller the hole diameter, the greater the throttling resistance. In the existing viscous damper, the size of the throttling hole is fixed, which leads to the fact that in actual use, a throttling hole structure with a smaller hole diameter is mainly used to cope with the seismic effect of large and medium-sized earthquakes. For small earthquakes, due to the large throttling resistance of the throttling hole with a small hole diameter, the device can only work in a small range or cannot work, resulting in poor seismic effect of the device for small earthquakes. Therefore, in view of the above problems, a new viscous damper is designed to better meet the actual use needs. Summary of the invention

[0003] The object of the present invention is to provide a novel viscous damper to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a novel viscous damper, comprising a shell and a piston rod, the shell is slidably connected to the piston rod, the shell is filled with a viscous fluid, a heat dissipation mechanism is symmetrically fixed to the outer side of the shell, a first piston is fixed to the piston rod, the first piston is slidably connected to the shell, a second piston and a third piston are respectively arranged on the sides of the first piston from left to right, and a throttling hole is opened on the first piston, the second piston and the third piston, and the diameter of the throttling hole on the first piston, the second piston and the third piston gradually decreases, the second piston, the third piston and the shell are slidably connected, and the second piston , the third piston contacts with the limit ring to achieve limit, the first piston and the second piston are both fixed with a push rod, the push rod is fixed with a limit plate, the limit plate and the sealing cylinder are slidably connected, the sealing cylinder is respectively fixed on the second piston and the third piston, the sealing cylinder and the limit mechanism are connected to each other, and the first level of seismic resistance is achieved through the throttling resistance generated by the sliding between the first piston and the outer shell, the second level of seismic resistance is achieved through the throttling resistance generated by the sliding between the first piston and the second piston and the outer shell, and the third level of 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 outer shell, so as to meet the seismic resistance requirements of earthquakes of different degrees.

[0005] Preferably, heat dissipation teeth are fixed symmetrically on the front and back of the shell, and the heat dissipation teeth are evenly distributed on the shell. A limiting ring is fixed inside the shell. Through the action of the heat dissipation teeth, the heat exchange area of ​​the shell can be increased, thereby achieving rapid heat dissipation when the device is working, and preventing the viscous fluid in the shell from being affected by the fluidity of the viscous fluid due to excessively high temperature.

[0006] Preferably, the shell and the piston rod are interconnected with the mounting seat via a pin, and the height of the mounting seat is greater than the height of the shell. Through the action of the mounting seat, the installation and fixation of the entire device can be easily achieved to ensure the stability of the device.

[0007] 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 a sealing cylinder, and the distance between the movable block and the top rod is smaller 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 top rod, a basic guarantee can be provided for the normal operation of the device, and through the action of the spring, a basic force can be provided for the automatic resetting of the movable block.

[0008] 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, and a positioning plate is fixed on the guide rod, and the positioning plate contacts the sealing cylinder to realize the positioning effect. When the movable block moves, the sliding guiding effect between the guide rod, the sealing cylinder and the third piston can ensure the stability of the movement of the movable block, and the limiting effect of the contact between the positioning plate and the sealing cylinder can limit the moving distance of the movable block to ensure the normal operation of the device.

[0009] Preferably, 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 limit rod. When the guide rod is moved under force, the transmission action of the connecting rod can provide a basic force for the movement of the limit rod, thereby ensuring the normal operation of the device.

[0010] Preferably, the limit rod and the third piston are slidably connected, and the limit rod and the outer shell are snap-fittingly connected. When the limit rod moves, the stability of the movement of the limit rod can be ensured by the sliding guiding action between the limit rod and the third piston. Combined with the snap-fitting action between the limit rod and the outer shell, the positioning of the third piston can be provided with basic guarantee, thereby ensuring the normal operation of the device.

[0011] Preferably, the heat dissipation mechanism includes a fixed frame, a rotating shaft, a gear, a fan blade, a protective cover, a rack and a fixed plate. The fixed frame is symmetrically fixed to the outer shell front and back, and a rotatable rotating shaft is evenly installed on the fixed frame, and 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 distributed at equal angles about the center of the rotating shaft, and the fan blades are arranged on the outside of the heat dissipation teeth. The rotation of the fan blades can achieve a turbulent effect, thereby accelerating the air flow around the heat dissipation teeth, thereby ensuring the heat dissipation effect of the device.

[0012] Preferably, a protective cover is provided on the outside of the fan blade, and the protective cover is distributed one-to-one with the rotating shaft. Through the function of the protective cover, the fan blade can be protected to avoid damage to the fan blade due to knocking during the installation or transportation of the device, thereby ensuring the integrity of the device.

[0013] Preferably, the gear and the rack are meshingly connected, and the rack is symmetrically fixed on the piston rod front and back, and the rack and the fixed plate are slidingly connected, and the fixed plate is fixed on the fixed frame. When the piston rod moves to drive the rack to move, the sliding guiding action between the rack and the fixed plate can ensure the stability of the rack movement, and the meshing transmission action between the rack and the gear can provide a basic force for the rotation of the rotating shaft and the fan blades, thereby ensuring the normal operation of the device.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The novel viscous damper can adapt to the shock absorption requirements of earthquakes of different degrees by opening throttling holes of different apertures on multiple groups of pistons. In actual use, the movement of one group of pistons or the synchronous movement of multiple groups of pistons can meet the shock absorption requirements of earthquakes of different degrees. The adaptability is higher, so that the actual use requirements can be better met. Specifically, when the piston rod moves to drive the first piston to move alone, since the throttling hole on the first piston is the largest, the throttling resistance generated by its movement can meet the seismic resistance requirements of small earthquakes. When the first piston and the second piston move synchronously, since the throttling hole on the second piston has a moderate diameter, the throttling resistance generated by its movement can meet the seismic resistance requirements of medium-sized earthquakes. When the first piston, the second piston and the third piston move synchronously, since the throttling hole on the third piston has the smallest diameter, the throttling resistance generated by its movement can meet the seismic resistance requirements of large earthquakes. 2. This new viscous damper adopts a linked rapid heat dissipation mechanism, which can achieve rapid air cooling and heat dissipation of the device, thereby avoiding the device temperature being too high during operation and affecting the fluidity of the viscous fluid. Specifically, during the operation of the device, the viscous fluid produces friction and throttling damping with the piston during the flow process, thereby converting kinetic energy into thermal energy. At this time, the heat exchange area can be increased by the heat dissipation teeth, and the action of the piston rod, rack and gear can be coordinated to make the fan blades rotate, and the turbulence effect is achieved through the fan blades to accelerate the air flow around the heat dissipation teeth, thereby ensuring the heat dissipation effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the device of the present invention; Figure 2 It is a schematic diagram of the overall front view cross-section of the three-dimensional structure of the device of the present invention; Figure 3 It is a schematic diagram of the front cross-sectional three-dimensional structure of the housing of the present invention; Figure 4 It is a schematic diagram of the side cross-sectional three-dimensional structure of the housing of the present invention; Figure 5 It is a schematic diagram of the front cross-sectional three-dimensional structure of the second piston of the present invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the third piston and the limiting mechanism of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the heat dissipation mechanism of the present invention.

[0016] In the figure: 1. shell; 101. heat dissipation tooth; 102. limit ring; 2. piston rod; 3. mounting seat; 4. first piston; 5. second piston; 6. third piston; 7. push rod; 701. limit plate; 8. sealing cylinder; 9. limit mechanism; 901. movable block; 902. spring; 903. guide rod; 904. positioning plate; 905. connecting rod; 906. limit rod; 10. heat dissipation mechanism; 1001. fixing frame; 1002. rotating shaft; 1003. gear; 1004. fan blade; 1005. protective cover; 1006. rack; 1007. fixing plate. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-Figure 7The present invention provides a technical solution: a novel viscous damper, comprising a shell 1 and a piston rod 2, the shell 1 is slidably connected with the piston rod 2, the shell 1 is filled with a viscous fluid, a heat dissipation mechanism 10 is symmetrically fixed to the outer side of the shell 1, a first piston 4 is fixed to the piston rod 2, the first piston 4 is slidably connected to the shell 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, and throttling holes are opened on the first piston 4, the second piston 5 and the third piston 6, and the diameters of the throttling holes on the first piston 4, the second piston 5 and the third piston 6 are gradually reduced, the second piston 5, the third piston 6 and the shell 1 are slidably connected, and the second piston 5, the third piston 6 and the shell 1 are slidably connected. The limiting ring 102 is in contact to achieve limiting, and the first piston 4 and the second piston 5 are both fixed with a push rod 7, and the push rod 7 is fixed with a limiting plate 701, and the limiting plate 701 and the sealing cylinder 8 are slidably connected. The sealing cylinder 8 is respectively fixed on the second piston 5 and the third piston 6, and the sealing cylinder 8 and the limiting mechanism 9 are interconnected. The first-level seismic resistance is achieved through the throttling resistance generated by the sliding between the first piston 4 and the outer shell 1, and the second-level seismic resistance is achieved through the throttling resistance generated by the sliding between the first piston 4 and the second piston 5 and the outer shell 1. The third-level seismic 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 outer shell 1, which meets the seismic resistance requirements of earthquakes of different degrees.

[0019] The housing 1 and the piston rod 2 are connected to the mounting seat 3 through a pin shaft, 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 in the sealing cylinder 8, and 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, and a spring 902 is fixed between the movable block 901 and the sealing cylinder 8; the movable block 90 1 is fixed with a guide rod 903, and the guide rod 903 is respectively connected to the sealing cylinder 8 and the third piston 6 in a sliding manner, and a positioning plate 904 is fixed to the guide rod 903, and the positioning plate 904 contacts 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 limiting rod 906; the limiting rod 906 is slidably connected to the third piston 6, and the limiting rod 906 is engaged with the housing 1; When using the new viscous damper, Figure 1-Figure 7As shown, first, the entire device is installed and fixed by the mounting seat 3. After the installation is completed, when a small earthquake occurs (earthquake level ≤ 4), the piston rod 2 is forced to move, thereby synchronously driving the first piston 4 to move, so that the first piston 4 moves in the viscous fluid in the housing 1, and the throttling resistance generated by the viscous fluid flowing through the throttling hole on the first piston 4 can meet the shock absorption effect of small earthquakes. When a medium-sized earthquake occurs (4<earthquake level<6), the piston rod 2 is forced to move, thereby synchronously driving the first piston 4 to move. At this time, the throttling resistance generated by the viscous fluid flowing through the throttling hole on the first piston 4 is not enough to meet the earthquake resistance requirements, so The moving distance of the first piston 4 and the piston rod 2 is increased, and when the first piston 4 moves, the push rod 7 on the first piston 4 is synchronously driven to move. When the push rod 7 contacts the movable block 901, the movable block 901 is forced to move, and the sliding guide effect between the guide rod 903, the sealing cylinder 8 and the second piston 5 can ensure the stability of the movement of the movable block 901. At this time, the spring 902 is forced to shrink. When the guide rod 903 slides, the transmission effect of the connecting rod 905 is cooperated, so that the limit rod 906 is forced to move. When the limit plate 701 contacts the sealing cylinder 8 on the second piston 5, the positioning plate 904 is synchronously in contact with the sealing cylinder 8 on the second piston 5 , and the limiting rod 906 is just separated from the housing 1, thereby releasing the limiting effect of 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 throttling hole on the second piston 5 is smaller than the aperture of the throttling hole on the first piston 4, the viscous fluid flowing through the throttling hole on the second piston 5 can generate a larger throttling resistance, thereby meeting the shock absorption effect of a medium-sized earthquake. When a large earthquake occurs (magnitude 6 ≤ earthquake magnitude < magnitude 8), the throttling resistance generated by the viscous fluid flowing through the throttling hole on the second piston 5 is insufficient to meet the shock absorption demand, so that the moving distance of the second piston 5, the first piston 4 and the piston rod 2 is increased. One step increase, according to the above principle, when the limiting plate 701 on the push rod 7 installed on the second piston 5 contacts the sealing tube 8 on the third piston 6, the limiting effect of 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 throttling hole on the third piston 6 is the smallest, when the third piston 6 moves, the viscous fluid flows through the throttling hole on the third piston 6, which can further increase the throttling resistance, so as to meet the shock absorption effect of large earthquakes. In summary, the new viscous damper can adapt to the shock absorption effect of earthquakes of different degrees by cooperating with multiple groups of pistons and throttling holes of different apertures, so as to better meet the actual use needs; The outer shell 1 is symmetrically fixed with heat dissipation teeth 101, and the heat dissipation teeth 101 are evenly distributed on the outer shell 1, and a limit ring 102 is fixed in the outer shell 1; the heat dissipation mechanism 10 includes a fixed frame 1001, a rotating shaft 1002, a gear 1003, a fan blade 1004, a protective cover 1005, a rack 1006 and a fixed plate 1007, the fixed frame 1001 is symmetrically fixed on the outer shell 1, and a rotatable rotating shaft 1002 is evenly installed on the fixed frame 1001, and one end of the rotating shaft 1002 is fixed to the gear 1003, and the rotating shaft 1002 The other end is fixed to the fan blade 1004, the fan blade 1004 is distributed at equal angles about the center of the rotating shaft 1002, and the fan blade 1004 is arranged on the outside of the heat dissipation tooth 101; a protective cover 1005 is arranged on the outside of the fan blade 1004, and the protective cover 1005 and the rotating shaft 1002 are distributed one-to-one; the gear 1003 and the rack 1006 are meshedly connected, and the rack 1006 is symmetrically fixed on the piston rod 2, and the rack 1006 is slidably connected to the fixed plate 1007, and the fixed plate 1007 is fixed on the fixed frame 1001; During the vibration reduction process of the device, Figure 1-Figure 7 As shown, since the viscous fluid generates friction and throttling damping with the piston during the flow process, the kinetic energy is converted into thermal energy, causing the temperature of the device to increase. At this time, the heat exchange area of ​​the device can be effectively increased through the heat dissipation tooth 101, and when the piston rod 2 moves, the rack 1006 can be driven to move synchronously. The sliding guiding effect between the rack 1006 and the fixed plate 1007 can ensure the stability of the movement of the rack 1006, and the meshing transmission effect between the rack 1006 and the gear 1003 can be used to rotate the rotating shaft 1002 and the fan blade 1004. Through the rotation of the fan blade 1004, the air outside the heat dissipation tooth 101 can be disturbed, thereby accelerating the flow of air outside the heat dissipation tooth 101, thereby ensuring the heat dissipation effect of the device, effectively avoiding the device temperature from being too high and affecting the fluidity of the viscous fluid inside the shell 1, and ensuring the stability of the device. This is the working principle of the new viscous damper.

[0020] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that 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. 5), the third piston (6) and the housing (1) are slidably connected, and the second piston (5) and the third piston (6) are in contact with the limiting ring (102) to achieve limiting, the first piston (4) and the second piston (5) are both fixed with a push rod (7), a limiting plate (701) is fixed on the push rod (7), the limiting plate (701) and the sealing cylinder (8) are slidably connected, the sealing cylinder (8) is respectively fixed on the second piston (5) and the third piston (6), and the sealing cylinder (8) and the limiting mechanism (9) are connected to each other.

2. A novel viscous damper according to claim 1, characterized in that: The outer shell (1) is symmetrically fixed with heat dissipation teeth (101) in the front and rear, and the heat dissipation teeth (101) are evenly distributed on the outer shell (1), and 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 each other via a pin and a mounting seat (3), 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 limiting mechanism (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); and a spring (902) is fixed between the movable block (901) and the sealing cylinder (8).

5. A novel viscous damper according to claim 4, characterized in that: 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. 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.

6. A novel viscous damper according to claim 4, characterized in that: 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).

7. The novel viscous damper according to claim 5 is characterized in that: The limiting rod (906) and the third piston (6) are in sliding connection, and the limiting rod (906) and the housing (1) are in snap-fit ​​connection.

8. The novel viscous damper according to claim 2 is 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 mounted on the fixing frame (1001) at equal intervals; 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).

9. A novel viscous damper according to claim 8, characterized in that: 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.

10. The novel viscous damper according to claim 8 is characterized in that: The gear (1003) and the rack (1006) are meshedly connected, and the rack (1006) is symmetrically fixed to 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 to the fixed frame (1001).

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