CN203656013U - Viscous damper - Google Patents
Viscous damper Download PDFInfo
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- CN203656013U CN203656013U CN201320860246.7U CN201320860246U CN203656013U CN 203656013 U CN203656013 U CN 203656013U CN 201320860246 U CN201320860246 U CN 201320860246U CN 203656013 U CN203656013 U CN 203656013U
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- Prior art keywords
- valve
- viscous damper
- damping
- chamber
- valve pocket
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- 238000013016 damping Methods 0.000 claims abstract description 99
- 239000007788 liquid Substances 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 4
- 229920002545 silicone oil Polymers 0.000 claims description 3
- 229910001060 Gray iron Inorganic materials 0.000 claims description 2
- 239000003082 abrasive agent Substances 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 abstract description 9
- 239000012530 fluid Substances 0.000 abstract description 2
- 230000002457 bidirectional effect Effects 0.000 abstract 4
- 230000035939 shock Effects 0.000 abstract 1
- 230000033001 locomotion Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The utility model belongs to the technical field of shock (vibration) attenuation and particularly relates to a viscous damper. The viscous damper comprises a cylinder body, a cylinder cover, a piston rod, a piston head, a guide sleeve, a seal and viscous damping fluid, wherein the cylinder body and the cylinder cover form a damping chamber, the piston head divides the damping chamber into a first damping chamber and a second damping chamber, a bidirectional blocking valve is installed on the piston head and the two ends of the bidirectional blocking valve are respectively connected with the first damping chamber and the second damping chamber. The viscous damper provided by the utility model has the advantages that by installing the bidirectional blocking valve on the piston head, when the speed of the viscous damper is higher than critical speed, since force applied to the valve core of the blocking valve is larger than pre-pressing force of a spring, the blocking valve is closed and the output damping force of the viscous damper is enabled to reach a rated value; besides, the structure of the device is compact, the device is convenient to install and the bidirectional blocking function can be realized.
Description
Technical field
The utility model belongs to damping (shaking) technical field, relates in particular to a kind of viscous damper.
Background technique
The 1950's, viscous damper is applied in machinery, vehicle, space flight and military engineering as a kind of good energy-dissipating and shock-absorbing (shaking) construction element, introduced the industries such as building, bridge, railway, power plant, steel mill the seventies by people and be used for resisting earthquake, wind shakes or other external load causes vibration, obtained good effect.Along with the fast development of structural damping (shaking) industry, viscous damper is also progressively developed and applies at China's civil engineering field in recent years, is progressively applied in the engineerings such as bridge works, tall building and equipment Foundations.
Common viscous damper is hydraulic oil cylinder type, it is mainly by piston head, piston rod, cylinder body and sealing composition, piston with respect to cylinder block at axially reciprocating, piston head be provided with some apertures or and cylinder body between leave suitable radial clearance, the damping cavity of oil cylinder inside is divided into two damping chambers by piston head, damping cavity is indoor is filled with the viscous liquid that viscosity is higher, when piston is during with respect to cylinder movement, being enclosed within the indoor liquid of pressurized one side damping cavity is squeezed, pressure raises, from the gap between piston head and cylinder body or aperture flow to another damping chamber, the resistance to motion of the poor formation of two damping cavity chamber pressures to piston head, acting, mechanical energy is converted into heat energy, thereby reach the object that absorbs outside energy, therefore can be widely used in damping, buffering, the occasion of power consumption.But the damping force of existing viscous damper output all designs in advance, and that some equipment vibrate under nominal situation is less, and the damping force of needs is little; In the time of start and stop vibration larger, need damping force large.Therefore, be badly in need of under a kind of low speed, low load damping force less, at a high speed, damping force reaches the damper of nominal force under high loading.
Therefore,, for the demand, the utility model provides a kind of novel viscous damper.
Model utility content
(1) technical problem that will solve
The purpose of this utility model is to provide a kind of viscous damper with two-way blocking function so that viscous damper is in hour less damping force of output of external load, and in the time that external load is larger the larger damping force of output.
(2) technological scheme
For solving the problems of the technologies described above, the utility model provides a kind of viscous damper, comprise gray iron, piston rod, piston head, guide sleeve, sealing and viscous damping liquid, described cylinder body and described cylinder cap form damping cavity, described damping cavity is separated into the first damping chamber and the second damping chamber by described piston head, wherein, on described piston head, be provided with through hole, two-way blocking-valve is installed in described through hole, and the two ends of described two-way blocking-valve are connected with described the first damping chamber and described the second damping chamber respectively.
Wherein, described two-way blocking-valve comprises:
(1) valve pocket, the two ends of described valve pocket are uncovered, the inside of described valve pocket is provided with valve pocket, and described valve pocket becomes uuper valve chamber and lower valve chamber by the baffle for separating in described valve pocket, and described uuper valve chamber and described lower valve chamber are communicated with each other by the axial hole being arranged on described dividing plate;
(2) two spools, described two spools slidably symmetry are arranged in described uuper valve chamber and described lower valve chamber, described each spool comprises the path section near the large footpath section of described valve pocket end and close described dividing plate, in the section of described large footpath, have axial bore, the free end of described path section be provided with described dividing plate on the plug that is connected of axial hole;
(3) spring, described spring, between described spool and described dividing plate, and is set in the path section of described spool.
Wherein, described spool is arranged in described uuper valve chamber and described lower valve chamber with back-up ring by hole respectively.
Wherein, the described dividing plate of described two-way blocking-valve and described valve pocket are integrated.
Wherein, be provided with from the outwardly holding division of described valve pocket outer wall on the top of the valve pocket outer wall of described two-way blocking-valve, be provided with groove in the bottom of described valve pocket outer wall, the distance between described holding division and described groove equals the thickness of described piston head.
Wherein, be respectively arranged with groove in described valve pocket outer wall upper and lower, the distance between described two grooves equals the thickness of described piston head.
Wherein, described piston head and described two-way blocking-valve are threaded connection.
Wherein, described guide sleeve and described sealing adopt high temperature resistant, high pressure resistant, high-abrasive material.
Wherein, described viscous damping liquid is organic silicone oil.
Wherein, described viscous damper outer surface is through antirust processing.
(3) beneficial effect
The viscous damper that technique scheme provides, by two-way blocking-valve is installed on piston head, so that proper viscous damper is while being less than critical velocity, two-way blocking-valve is in normally open, and the damping force of now viscous damper output is less; In the time that viscous damper is greater than critical velocity, two-way blocking-valve closure, so that the damping force of viscous damper output reaches rating number.In addition, this device volume is small and exquisite, and compact structure is easy for installation, and can realize the blocking function of twocouese.
Accompanying drawing explanation
Fig. 1 is the structural representation of viscous damper of the present utility model;
Fig. 2 is the structural representation of the two-way blocking-valve in viscous damper of the present utility model;
Fig. 3 is that viscous damper of the present utility model is at the partial schematic diagram being less than under critical velocity;
Fig. 4 is that viscous damper of the present utility model is at the partial schematic diagram being greater than under critical velocity.
Wherein: 1-cylinder body; 2-the first cylinder cap; 3-piston rod; 4-piston head; 5-the second cylinder cap; 6-the first link; 7-the second link; The two-way blocking-valve of 8-; 81-valve pocket; 82-spool; 83-spring; 84-dividing plate; 85-hole back-up ring; 86-groove; 87-holding division; 9-shaft block ring; 10-sealing; 11-guide sleeve; 12-hole back-up ring; 13-O shape seal ring; 14-the first damping chamber; 15-the second damping chamber.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is further described.Following examples are used for illustrating the utility model, but are not used for limiting scope of the present utility model.
Figure 1 shows that a preferred embodiment of a kind of viscous damper of the present utility model.According to this embodiment, this viscous damper comprises cylinder body 1, lays respectively at the first cylinder cap 2 and second cylinder cap 5 at cylinder body 1 two ends, and the cylinder cap at cylinder body 1 and two ends forms airtight damping cavity, has received viscous damping liquid in damping cavity content.Piston rod 3 extend in cylinder body 1 through the cylinder cap of both sides, and the surface of contact place of piston rod 3 and the first cylinder cap 2, the second cylinder cap 5 is respectively arranged with sealing 10, to guarantee the sealing of piston rod 3 in movement process.On piston rod 3 in cylinder body 1, be provided with piston head 4, and move reciprocatingly in the airtight damping cavity being formed by cylinder body 1 and cylinder cap.Piston head 4 is divided into the first damping chamber 14 and the second damping chamber 15, the first damping chambers 14 and the second damping chamber 15 by damping cavity and is communicated with by the damping clearance between piston head 4 and cylinder body 1 inwall.In addition, two-way blocking-valve 8 is installed on piston head 4, the two ends of this two-way blocking-valve 8 are connected with the first damping chamber 14 and the second damping chamber 15 respectively.In the time of the moving generation of exterior object shake (shaking), the piston rod 3 being connected with exterior object drives the piston head 4 above it to move reciprocatingly in the airtight damping cavity of cylinder body 1.In the time that viscous damper is less than critical velocity, two-way blocking-valve 8 is in normally open, and the damping force of now viscous damper output is less; In the time that viscous damper is greater than critical velocity, two-way blocking-valve 8 is worked, so that the damping force of viscous damper output reaches rating number.In addition, this device volume is small and exquisite, and compact structure is easy for installation, and can realize the blocking function of twocouese.
Viscous damper is in the above-described embodiments two rod clearance type viscous dampers, it will be appreciated by those skilled in the art that viscous damper in the utility model is also applicable to two rod hole formula viscous dampers or single rod hole formula viscous damper or single rod clearance type viscous damper.
In order to prevent that the indoor viscous damping liquid of damping cavity from leaking, and seals by O-ring seals 13 respectively between the first cylinder cap 2, the second cylinder cap 5 and cylinder body 1.
Further, in order to guarantee the straight path of piston rod 3 in movement process, in the first cylinder cap 2, the second cylinder cap 5, be respectively arranged with guide sleeve 11, piston rod 3 is connected via guide sleeve 11 and cylinder cap.
In addition, viscous damper is also provided with and is positioned at described viscous damper two ends, for the first link 6 and the second link 7 that are connected with the object of outside need damping (shaking), wherein, the first link 6 is connected with the first cylinder cap 2 by screw thread, and the second link 7 is threaded connection with piston rod 3.
Figure 2 shows that a preferred embodiment of a kind of two-way blocking-valve for viscous damper of the present utility model.According to this embodiment, this two-way blocking-valve comprises valve pocket 81 and is positioned at the spool 82 of valve pocket 81, spring 83.
Wherein, the two ends of valve pocket 1 are uncovered, form a valve pocket in the inside of valve pocket 81, and this valve pocket is separated into uuper valve chamber and lower valve chamber by the dividing plate 84 in valve pocket 1, and uuper valve chamber and lower valve chamber are communicated with each other by the axial hole being arranged on dividing plate 84, to form axial passage.For the ease of processing, preferred separator 84 is one-body molded with valve pocket 81.
Two spools 82 are used back-up ring 85 symmetrical being arranged in the uuper valve chamber and lower valve chamber of valve pocket 81 movably by hole respectively.Particularly, spool 82 is multidiameter shaft shape, and it comprises the path section near the large footpath section of valve pocket 81 ends and close dividing plate 84; In the section of the large footpath of spool 82, have axial bore, the free end of the path section of spool 82 be provided with dividing plate 84 on the plug that is connected of axial hole, for conducting or closed axial passage.In this embodiment, this plug is cone shape, and the footpath, the end of this cone is greater than the aperture of the axial hole on dividing plate 84, and the top of cone can be stretched in the axial hole on dividing plate 84, to be connected with the axial hole on dividing plate 84, make the axial passage closure in valve pocket.It should be noted that, this plug can be also cylindrical boss, its diameter is slightly smaller than the diameter of the axial hole of dividing plate 84, and the diameter of spool 82 path sections is greater than the diameter of the axial hole of dividing plate 84, so that cylindrical boss can be extend in axial hole, and in the time that cylindrical boss extend in axial hole completely, with by the axial passage closure in valve pocket.
Further, in order to improve the anti-wear of surface of contact between spool 82 and dividing plate 84, extend the working life of two-way blocking-valve, preferably spool 82 and dividing plate 84 form by Hardmetal materials is refining.
Further, be provided with the holding division 87 outwardly from valve pocket outer wall on the top of valve pocket 81 outer walls, be provided with groove 86 in the bottom of valve pocket outer wall, distance between this holding division and groove 86 equals the thickness of piston head 4, to two-way blocking-valve 8 is inserted in the mounting hole of piston head 4 of viscous damper, and insert in groove fixing two-way blocking-valve 8 by shaft block ring 9.
In another embodiment, be respectively arranged with groove in valve pocket 81 outer wall upper and lowers, distance between these two grooves equals the thickness of piston head 4, to two-way blocking-valve 8 is fixed on the piston head 4 of viscous damper by shaft block ring 9 respectively at the two ends of two-way blocking-valve 8.
In an embodiment again, on valve pocket 81 outer walls, be provided with screw thread (not shown), to be threaded connection, two-way blocking-valve 8 is arranged on the piston head 4 of viscous damper.
Preferably the viscous damping liquid in damping cavity is organic silicone oil, because it has, viscosity is large, flash-point is high, good thermal stability, and its viscosity with temperature variance ratio is little, be difficult for the advantages such as aging.
Further, in order to prevent that viscous damper from getting rusty, preferably the outer surface of viscous damper is carried out to antirust processing.
Figure 3 shows that viscous damper is at the partial schematic diagram being less than under critical velocity.As shown in Figure 3, under the effect of external force F, when piston rod 3 is moved to the second damping chamber 15 by the first damping chamber 14, the second damping chamber 15 smaller volume, the viscous damping liquid holding in it is compressed, therefore cause the pressure in the second damping chamber 15 to increase, and the volume of the first damping chamber 14 increases, cause pressure to reduce, thereby force viscous damping liquid to be flowed to the first damping chamber 14 by the second damping chamber 15.Now, the power on spool 82 of acting on is less than the precompression of spring 83, two-way blocking-valve is in opening state, a part in viscous damping liquid is flowed to the first damping chamber 14 by the second damping chamber 15 by two-way blocking-valve 8, another part is flowed to the first damping chamber 14 by the second damping chamber 15 by the gap between piston head 4 and cylinder body 1 inwall, because viscous damping fluid viscosity is large, in flowing, produce great viscous damping force, the direction of damping force is contrary with the moving direction of piston rod 3, thereby make vibrational energy be converted into rapidly heat energy and discharge, reach the object of energy-dissipating and shock-absorbing (shaking).In whole movement process, two-way blocking-valve 8 is always in opening state, inoperative.In the time that piston rod 3 is moved to the first damping chamber 14 by the second damping chamber 15, working principle is the same, just the opposite direction of viscous damping liquid and viscous damping force.
Figure 4 shows that viscous damper is greater than the partial schematic diagram under critical velocity.As shown in Figure 4, under the effect of external force F, when piston rod 3 is moved to the second damping chamber 15 by the first damping chamber 14, the second damping chamber 15 smaller volume, the viscous damping liquid holding in it is compressed, therefore causes the pressure in the second damping chamber 15 to increase rapidly, and the volume of the first damping chamber 14 increases, cause pressure to reduce, thereby force viscous damping liquid to be flowed to the first damping chamber 14 by the second damping chamber 15.Now, act on power on spool 82 precompression much larger than spring 83, spring 83 is compressed, and move to the direction of dividing plate 84 with movable valve plug 82, plug on last spool 82 and the axial hole on dividing plate 84 are connected, make two-way blocking-valve 8 closures, viscous damping liquid in the second damping chamber 15 is only flowed to the first damping chamber 14 by the second damping chamber 15 by the gap between piston head 4 and cylinder body 1 inwall, make the damping force of damper output reach rating number, with rapid dissipation energy.
Above mode of execution is only for the utility model is described, and is not limitation of the utility model, and the those of ordinary skill in relevant technologies field, in the situation that not departing from spirit and scope of the present utility model, can also make a variety of changes and modification.Therefore all technological schemes that are equal to also belong to protection category of the present utility model.
Claims (10)
1. a viscous damper, comprise gray iron, piston rod, piston head, guide sleeve, sealing and viscous damping liquid, described cylinder body and described cylinder cap form damping cavity, described damping cavity is separated into the first damping chamber and the second damping chamber by described piston head, it is characterized in that, on described piston head, be provided with through hole, two-way blocking-valve is installed in described through hole, the two ends of described two-way blocking-valve are connected with described the first damping chamber and described the second damping chamber respectively.
2. viscous damper according to claim 1, is characterized in that, described two-way blocking-valve comprises:
(1) valve pocket, the two ends of described valve pocket are uncovered, the inside of described valve pocket is provided with valve pocket, and described valve pocket becomes uuper valve chamber and lower valve chamber by the baffle for separating in described valve pocket, and described uuper valve chamber and described lower valve chamber are communicated with each other by the axial hole being arranged on described dividing plate;
(2) two spools, described two spools slidably symmetry are arranged in described uuper valve chamber and described lower valve chamber, described each spool comprises the path section near the large footpath section of described valve pocket end and close described dividing plate, in the section of described large footpath, have axial bore, the free end of described path section be provided with described dividing plate on the plug that is connected of axial hole;
(3) spring, described spring, between described spool and described dividing plate, and is set in the path section of described spool.
3. viscous damper according to claim 2, is characterized in that, described spool is arranged in described uuper valve chamber and described lower valve chamber with back-up ring by hole respectively.
4. viscous damper according to claim 3, is characterized in that, described dividing plate and the described valve pocket of described two-way blocking-valve are integrated.
5. viscous damper according to claim 4, it is characterized in that, top at the valve pocket outer wall of described two-way blocking-valve is provided with from the outwardly holding division of described valve pocket outer wall, bottom at described valve pocket outer wall is provided with groove, and the distance between described holding division and described groove equals the thickness of described piston head.
6. viscous damper according to claim 4, is characterized in that, is respectively arranged with groove in described valve pocket outer wall upper and lower, and the distance between described two grooves equals the thickness of described piston head.
7. viscous damper according to claim 4, is characterized in that, described piston head and described two-way blocking-valve are threaded connection.
8. according to the viscous damper described in any one in claim 1-7, it is characterized in that, described guide sleeve and described sealing adopt high temperature resistant, high pressure resistant, high-abrasive material.
9. according to the viscous damper described in any one in claim 1-7, it is characterized in that, described viscous damping liquid is organic silicone oil.
10. according to the viscous damper described in any one in claim 1-7, it is characterized in that, described viscous damper outer surface is through antirust processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320860246.7U CN203656013U (en) | 2013-12-24 | 2013-12-24 | Viscous damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320860246.7U CN203656013U (en) | 2013-12-24 | 2013-12-24 | Viscous damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203656013U true CN203656013U (en) | 2014-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320860246.7U Expired - Lifetime CN203656013U (en) | 2013-12-24 | 2013-12-24 | Viscous damper |
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| Country | Link |
|---|---|
| CN (1) | CN203656013U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671677A (en) * | 2013-12-24 | 2014-03-26 | 北京九州一轨隔振技术有限公司 | Viscous damper |
| CN107915120A (en) * | 2017-10-24 | 2018-04-17 | 安徽德马泰格起重机械有限公司 | A kind of syndrome twin beams allocates and transports crane interlinked mechanism |
| CN108591349A (en) * | 2018-04-28 | 2018-09-28 | 张美玲 | A kind of damper |
-
2013
- 2013-12-24 CN CN201320860246.7U patent/CN203656013U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671677A (en) * | 2013-12-24 | 2014-03-26 | 北京九州一轨隔振技术有限公司 | Viscous damper |
| CN107915120A (en) * | 2017-10-24 | 2018-04-17 | 安徽德马泰格起重机械有限公司 | A kind of syndrome twin beams allocates and transports crane interlinked mechanism |
| CN108591349A (en) * | 2018-04-28 | 2018-09-28 | 张美玲 | A kind of damper |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 102402 No.32, Guangmao Road, Doudian Town, Fangshan District, Beijing Patentee after: Beijing Jiuzhou first rail Environmental Technology Co.,Ltd. Address before: 100026, Beijing Zhongguancun Daxing District science and Technology Park Daxing pharmaceutical industry base, Tianhe West Road, No. 28, a 1-2 floor Patentee before: BEIJING JIUZHOUYIGUI SHOCK AND VIBRATION ISOLATION Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140618 |
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| CX01 | Expiry of patent term |