TW201506227A - Liquid damper - Google Patents

Abstract

Disclosed is a liquid damper capable of effectively mitigating sudden great forces imposed thereupon, comprising a cylinder block, a piston, two rod members, two lid bodies, two dividing boards, and two first unidirectional valves, the cylinder having a through hole formed therein and an inner flow path is formed on the walls of the through hole of the cylinder block, the piston being disposed in the through hole of the cylinder block, the two rod members being disposed on the piston, the two lid bodies covering two opening ends of the cylinder block respectively and each lid body having a first through opening formed thereon, the two dividing boards being disposed on opposing sides of the through hole of the piston respectively and each board having first and second through flow path holes and a second through hole formed thereon, the rod members being tightly disposed in the first and second through holes, and the two unidirectional valves being disposed in the first and second flow path holes.

Description

Flow damper

The present invention relates to a damper, and more particularly to a flow damper.

Earthquakes are an unavoidable natural phenomenon. For the residents in the earthquake zone, the earthquake is like an untimely bomb, threatening people's property and life.

The disasters caused by general earthquakes are mostly caused by the damage caused by the excessive shaking of civil engineering structures, such as house dumping, bridge breaks and road collapses. Therefore, if the vibrations of civil engineering structures are effectively absorbed, it will help to reduce The property damage and casualties caused by the earthquake have led to the development of a flow damper for shock absorption of civil structures.

1 is a cross-sectional view of a liquid flow damper of the Japanese Patent No. M284702, which is shown as a structural body with a container tube 11 internally filled with a liquid 10 as shown in the figure. A piston 12 is disposed in the container barrel 11, and the end of the piston 12 is passed through one end of the container barrel 11. When the flow damper is used, the container tube 11 is fixed to the building structure (not shown). At one degree of freedom, the end of the piston 12 extending beyond the container barrel 11 is coupled to another degree of freedom of the building structure.

In the aforementioned conventional flow damper, the piston 12 is provided with a separately controllable activity The liquid passages 13 are unidirectionally flowed on both sides of the plug 12, and the flow passage 13 of the piston 12 is guided to the two sides of the piston 12 by the first-class passage holes 131, and a compression spring is disposed in the flow passage hole 131 thereof. The stiffening element 133 and a plug 132 are pushed up by the stiffening element 133 to close the flow passage hole 131, and the stiffening element 133 and the plug 132 are restrained in the flow by a limiting member 134 such as a nut. In the 13th.

However, the conventional flow damper described above has a pressure regulating valve disposed in the piston body and has only a general primary damping effect, so that the structure itself is likely to be deformed by force when subjected to an instantaneous high vibration force; In addition, the conventional flow damper does not have an effect on the temperature rise caused by the high amplitude, but the rise of the temperature tends to increase the internal pressure of the flow damper, thereby affecting the overall efficiency or service life.

Therefore, how to avoid various problems in the above-mentioned prior art has become a problem that is currently being solved.

In view of the above-mentioned deficiencies of the prior art, the present invention provides a flow damper comprising: a cylinder having a through hole and having two open ends at two ends of the through hole, the cylinder being through the through hole The inner wall of the hole has an inner flow channel, and the openings at the two ends of the inner flow channel are respectively located at the wall of the through hole adjacent to the two open ends; the piston is disposed in the through hole of the cylinder and has a relative a first surface and a first side surface connecting the first surfaces, wherein the first side surface is liquid-tightly connected to the hole wall of the through hole, and the piston is movable relative to the cylinder; Separately disposed on the first surface of the piston; the two covers respectively cover the open ends of the cylinder, and Each of the rods has a first through opening, the rod member is liquid-tightly disposed in the first through hole, and the rod member is movable relative to the cover body; and the two partition plates are respectively disposed on the opposite side of the piston In the through holes of the two sides, each of the partition plates has two opposite second surfaces, a second side surface connecting the second surfaces, and a first flow channel and a second flow path extending through the second surfaces. a hole and a second through hole, wherein the second side surface is liquid-tightly connected to the hole wall of the through hole, the rod is liquid-tightly disposed in the second through hole, and the rod can be opposite The partition plate is moved, and the opening of the inner flow channel is located between the partition plate and the cover body, and the partition plate and the cover body at the two ends of the through hole have a connection between the inner flow channel and the cover a liquid accommodating space having a second liquid accommodating space between the piston and the partitioning plate; and two first one-way valves respectively disposed in the second flow path holes to prevent liquid from penetrating therethrough Both ends of the through hole flow inward, and when the liquid flowing to the both ends of the through hole reaches a certain pressure, the first single is opened Valve.

It can be seen from the above that since the damper of the present invention can activate the effect of secondary damping when the external force speed is higher than a certain value, the large external force of the moment can be alleviated.

10‧‧‧Liquid

11‧‧‧ container

12, 22‧‧‧ piston

13‧‧‧ flow path

131‧‧‧Rail hole

132‧‧ ‧ embolization

133‧‧‧ stiffening components

134‧‧‧Limited parts

21‧‧‧Cylinder

210‧‧‧through through hole

2100‧‧‧Open end

211‧‧‧Internal flow channel

2110‧‧‧ openings

22a‧‧‧ first surface

22b‧‧‧First side surface

23‧‧‧ rods

24‧‧‧ cover

240‧‧‧First through hole

25‧‧‧ partition board

25a‧‧‧second surface

25b‧‧‧Second side surface

250‧‧‧Second through opening

251‧‧‧First runner hole

252‧‧‧Second runner hole

253‧‧‧ Third runner hole

26a‧‧‧First liquid containment space

26b‧‧‧Second liquid containment space

27‧‧‧First check valve

28‧‧‧Second check valve

241‧‧‧ Groove

29‧‧‧Flexible parts

291‧‧ Spring

292‧‧‧Baffle

Figure 1 is a cross-sectional view of a liquid flow damper of the Taiwan Patent No. M284702; Figures 2A to 2C are schematic views of the flow damper of the present invention, wherein the second embodiment is a three-dimensional exploded view 2B is a three-dimensional combination diagram, and FIG. 2C is a cross-sectional view; and FIG. 3 is a diagram showing the relationship between the damping force of the flow damper of the present invention and the speed of the external force.

The other embodiments of the present invention will be readily understood by those skilled in the art from this disclosure.

It is to be understood that the structure, the proportions, the size, and the like of the present invention are intended to be used in conjunction with the disclosure of the specification, and are not intended to limit the invention. The conditions are limited, so it is not technically meaningful. Any modification of the structure, change of the proportional relationship or adjustment of the size should remain in this book without affecting the effects and the objectives that can be achieved by the present invention. The technical content disclosed in the invention can be covered. In the meantime, terms such as "upper", "serial", "end", "internal", "proximity", "liquidity", "side", "certain" and "one" are used in this manual. The scope of the present invention is also considered to be within the scope of the invention, and is not intended to limit the scope of the invention.

2A to 2C are schematic views of the flow damper of the present invention, wherein FIG. 2A is a three-dimensional exploded view, FIG. 2B is a three-dimensional combined view, and FIG. 2C is a cross-sectional view.

As shown in the figure, the flow damper of the present invention comprises: a cylinder 21 having a through hole 210 and two open ends 2100 at two ends of the through hole 210, the cylinder 21 being through the through hole An inner flow channel 211 is defined in the wall of the hole 210, and the opening 2110 at the two ends of the inner flow channel 211 is respectively located at the hole wall of the through hole 210 adjacent to the two open ends 2100; the piston 22 is The first side surface 22a and the first side surface 22b connecting the two first surfaces 22a are disposed in the through hole 210 of the cylinder block 21, and the first side surface 22b is fluidly connected to the through surface. The hole wall of the through hole 210, the piston 22 can move relative to the cylinder 21; the two rods 23 are respectively disposed on the first surface 22a of the piston 22; the two cover bodies 24 respectively cover the cylinder The open end 2100 of the body 21 has a first through opening 240, and the rod 23 is liquid-tightly disposed in the first through hole 240. The rod 23 can be opposite to the cover 24 The two partitioning plates 25 are respectively disposed in the through holes 210 on opposite sides of the piston 22, and each of the partitioning plates 25 has two opposite second surfaces 25a and a second connecting the second surfaces 25a. a side surface 25b, and a first flow channel hole 251, a second flow channel hole 252 and a second through hole 250 extending through the two second surfaces 25a, and the second side surface 25b is fluid-tightly connected to the through hole 210 a hole 23, the rod member 23 is liquid-tightly disposed in the second through hole 250, and the rod member 23 is movable relative to the partition plate 25, the inner flow passage 2 The opening 2110 of the 11 is located between the partitioning plate 25 and the cover body 24, and the first liquid volume connecting the inner flow channel 211 between the partitioning plate 25 and the cover body 24 at the two ends of the through-hole 210 a space 26a having a second liquid accommodating space 26b between the piston 22 and the partition plate 25; and two first check valves 27 respectively disposed in the second flow path holes 252 to prevent liquid The first check valve 27 is opened when the liquid flowing through the both ends of the through hole 210 flows inward and reaches a certain pressure to the liquid flowing through the both ends of the through hole 210.

In the foregoing flow damper, the first check valve 27 is composed of a series of springs and a metal ball (or a metal plug), and includes, for example, an oil or The damping fluid of the mineral oil is placed in the through hole 210 of the cylinder 21.

According to the flow damper described above, the partitioning plate 25 includes a third flow passage hole 253 extending through the two second surfaces 25a, and each of the third flow passage holes 253 is provided with a second one-way valve. 28, the second check valve 28 is disposed opposite to the first check valve 27, and the second check valve 28 is composed of a series of springs and a metal ball (or a metal plug).

Further, in the flow damper described above, the cylinder 21 has a cylindrical shape, the rod member 23 has a cylindrical shape, and the through hole 210 has a cylindrical shape.

In the flow damper of the present invention, the recess 241 and the elastic member 29 are formed. The recess 241 is formed on the cover body 24 and is connected to the first liquid accommodating space 26a. In the recess 241, and when the liquid in the first liquid accommodating space 26a reaches a certain pressure, the elastic member 29 is compressed.

In the foregoing flow damper, the elastic member 29 includes a spring 291 and a baffle 292 that connects one end of the spring 291 and is adjacent to the open end of the groove 241.

The flow damper of the present invention is mainly applied to the shock absorption of a civil building structure. Referring to Figures 2A to 2C, when the flow damper is subjected to an external force such as an earthquake, the piston 22 and the rod member 23 are pushed, for example, for example. When the piston 22 is forced to move to the left with respect to the cylinder 21, the liquid in the second liquid accommodating space 26b on the left side is compressed, and then flows to the first liquid accommodating space on the left side through the first flow passage hole 251 on the left side. 26a, then flows through the inner flow passage 211 to the right first liquid accommodation space 26a, and passes through the right side. The first flow passage hole 251 flows to the second liquid accommodating space 26b on the right side, and the foregoing process produces a damping effect of the primary damping coefficient. At this time, the second check valve 28 can be used to prevent the back pressure from rising due to the venting of the damping liquid, thereby affecting the damping force, but the second check valve 28 does not affect the primary damping coefficient.

In addition, when the piston 22 is subjected to a momentary large external force such that the moving speed reaches a certain level (for example, a speed of 20 mm/s), the first check valve 27 will open due to the too much pressure applied, resulting in a secondary damping effect. In order to reduce the damping force, it is not possible to vent the damping liquid due to the too high vibration speed, so that the damping force exceeds the load of the structure, thereby causing damage of the damper; the damping force of the flow damper of the present invention and the speed of receiving the external force The relationship diagram is shown in Figure 3.

Furthermore, when the damper is operated at a high amplitude or for a long time, the temperature of the internal damping liquid continues to rise, thereby causing the volume of the damping liquid to expand, causing the internal pressure of the cylinder 21 to become large, when the internal pressure is large enough. To the extent that the resilient member 29 will actuate, in particular, the spring 291 will be compressed, and the baffle 292 will sink into the direction of the bottom of the recess 241, allowing the damping fluid that expands due to the increase in temperature to have additional The space is accommodated to prevent the damper from being subjected to an additional internal pressure due to an increase in the temperature of the damping liquid, that is, the elastic member 29 has a pressure buffering effect.

In addition, the partitioning plate 25 is a necessary member, because when the piston 22 moves to the left, the second liquid accommodating space 26b on the left side is subjected to pressure, and at this time, if the partitioning plate 25 is not separated from the left side, The second liquid accommodating space 26b and the first liquid accommodating space 26a, and the first liquid accommodating space on the left side 26a will be directly subjected to a positive pressure from the piston 22, so that the elastic member 29 is compressed, thereby affecting the damping coefficient of the damper; conversely, in the case where the partitioning plate 25 is provided, the piston 22 is actuated. Positive pressure will not directly affect the elastic member 29.

In addition, in the present embodiment, the cover body 24 and the partition plate 25 are two independent members, but the invention is not limited thereto, that is, the cover body 24 and the partition plate 25 may also be One-piece shaper.

In summary, compared with the prior art, the damper of the present invention can activate the effect of secondary damping when the external force speed is higher than a certain value to alleviate the large external force of the moment; in addition, considering that the damper is For the phenomenon of temperature rise during high-amplitude or long-time operation, the present invention adjusts the internal pressure of the damper by the arrangement of the elastic members to avoid the situation that the internal pressure is too high due to the temperature rise of the flow damper.

The above embodiments are intended to illustrate the principles of the invention and its effects, and are not intended to limit the invention. Any of the above-described embodiments may be modified by those skilled in the art without departing from the spirit and scope of the invention. Therefore, the scope of protection of the present invention should be as set forth in the appended claims.

21‧‧‧Cylinder

210‧‧‧through through hole

2100‧‧‧Open end

2110‧‧‧ openings

22‧‧‧Piston

22a‧‧‧ first surface

22b‧‧‧First side surface

23‧‧‧ rods

24‧‧‧ cover

240‧‧‧First through hole

25‧‧‧ partition board

25a‧‧‧second surface

25b‧‧‧Second side surface

250‧‧‧Second through opening

251‧‧‧First runner hole

252‧‧‧Second runner hole

253‧‧‧ Third runner hole

27‧‧‧First check valve

28‧‧‧Second check valve

241‧‧‧ Groove

29‧‧‧Flexible parts

Claims (10)

A flow damper includes: a cylinder body having a through hole and having two open ends at two ends of the through hole, the cylinder having an internal flow passage in the hole wall of the through hole, the inside The openings at the two ends of the flow passage are respectively located at the wall of the through hole adjacent to the two open ends; the piston is disposed in the through hole of the cylinder and has opposite first surfaces and connecting the first surfaces a first side surface, and the first side surface is fluidly connected to the hole wall of the through hole, the piston can move relative to the cylinder; the two rods are respectively disposed on the first surfaces of the piston; a second cover body respectively covering the two open ends of the cylinder block, and each having a first through hole, the rod member being liquid-tightly disposed in the first through hole, the rod member being opposite to the The cover plate is moved; the two partition plates are respectively disposed in the through holes of the opposite sides of the piston, and each of the partition plates has two opposite second surfaces, a second side surface connecting the second surfaces, And a first flow channel hole, a second flow channel hole and a second through hole penetrating the two second surfaces a hole, and the second side surface is liquid-tightly connected to the hole wall of the through hole, the rod is liquid-tightly disposed in the second through hole, and the rod is movable relative to the partition plate, The opening of the internal flow channel is located between the partition plate and the cover body, and a first liquid accommodating space connecting the internal flow channel is provided between the partition plate and the cover body at the two ends of the through hole. Having a second liquid accommodating space between the piston and the partition plate; The first one-way valves are respectively disposed in the second flow channel holes to prevent liquid from flowing inward from the two ends of the through-holes, and the liquid flowing to the two ends of the through-holes is constant When the pressure is applied, the first check valve is opened. The flow damper of claim 1, wherein the first one-way valve is formed by a series of springs and a metal ball or a metal plug. The flow damper of claim 1, wherein the partitioning plate includes a third flow passage hole extending through the second surface, and each of the third flow passage holes is provided with a second The one-way valve is disposed opposite to the first one-way valve. The flow damper of claim 3, wherein the second check valve is formed by a series of springs and a metal ball or a metal plug. The flow damper according to claim 1, wherein the liquid damper comprises an oil or a mineral oil, and the system is disposed in the through hole of the cylinder. The flow damper of claim 1, wherein the cylinder system has a cylindrical shape. The flow damper of claim 1, wherein the rod is cylindrical. The flow damper of claim 1, wherein the through hole is cylindrical. The flow damper of claim 1, wherein the flow damper is applied to shock absorption of a civil building structure. The flow damper according to claim 1, wherein the cover body and the partition plate are integrally formed.