CN108049306B - Shock insulation limiting device of groove type cam mechanism - Google Patents
Shock insulation limiting device of groove type cam mechanism Download PDFInfo
- Publication number
- CN108049306B CN108049306B CN201711291043.XA CN201711291043A CN108049306B CN 108049306 B CN108049306 B CN 108049306B CN 201711291043 A CN201711291043 A CN 201711291043A CN 108049306 B CN108049306 B CN 108049306B
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- cam
- cam mechanism
- limiting
- push rod
- energy
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/04—Bearings; Hinges
- E01D19/048—Bearings being adjustable once installed; Bearings used in incremental launching
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
- E04H9/0235—Anti-seismic devices with hydraulic or pneumatic damping
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a groove type cam mechanism vibration isolation limiting device which comprises a base, a cam mechanism, a cam limiting baffle, a ball screw, an energy absorber and an energy absorber fixing seat, wherein the cam mechanism, the cam limiting baffle, the ball screw, the energy absorber and the energy absorber fixing seat are arranged on the base. The cam mechanism comprises a cam, a push rod limiting plate and a roller arranged on the push rod in the groove. The cam is connected with a ball nut of the ball screw, the energy dissipater is arranged on an energy dissipater fixing seat on one side of the cam mechanism, one end of the energy dissipater is connected with the tail end of a push rod of the cam mechanism, the other end of the energy dissipater is connected with the upper end of the energy dissipater fixing seat, the cam limiting baffles are arranged on two sides of the cam mechanism in parallel, the cam in the cam mechanism rotates under the limit of the limiting baffles, and the roller drives the push rod to do reciprocating linear motion under the limit of the push rod limiting plates. The invention can effectively reduce the displacement of the shock insulation layers of structures such as buildings, bridges and the like in the earthquake.
Description
Technical Field
The invention relates to a shock insulation layer limiting device for a building structure and a bridge structure, in particular to a shock insulation limiting device for a groove type cam mechanism.
Background
In recent years, passive control technologies such as basic vibration isolation, energy dissipation and vibration reduction, tuning and vibration reduction control and the like are widely applied to civil engineering at home and abroad due to simple concept, clear mechanism, lower manufacturing cost and remarkable vibration reduction effect. Among them, the damper is valued by the wide civil engineering researchers for its advantages of good economy, good applicability, low maintenance cost, etc. In the aspect of passive control damping technology of building structures and bridge structures, the vibration isolation technology needs to limit the displacement of a vibration isolation layer through an energy absorber, and the energy dissipation damping technology needs to dissipate seismic energy through the energy absorber. When a displacement-related energy dissipater such as a friction energy dissipater and a metal yield energy dissipater are adopted, if the displacement of the energy dissipater is small, the energy dissipater is difficult to exert effective energy consumption capacity; if the displacement of the energy dissipater is larger, a large-tonnage large-stroke energy dissipater is needed, and the manufacturing cost is higher. When a speed-dependent energy dissipater such as a viscous liquid energy dissipater or a viscoelastic energy dissipater is employed, it is difficult to exert an effective energy dissipation capacity if the energy dissipater speed is small; if the speed of the energy dissipater is high or the displacement is high, the large-tonnage large-stroke energy dissipater is needed, and the manufacturing cost is high.
Disclosure of Invention
The invention aims to solve the two difficult problems that when the existing shock insulation limiting technology adopts an energy dissipater, the energy dissipater is difficult to exert effective energy consumption capacity when the displacement of the energy dissipater is smaller or the speed is smaller, and when the displacement of the energy dissipater is larger or the speed is larger, a large-tonnage large-stroke energy dissipater is needed, so that the manufacturing cost is higher.
In order to solve the problems, the invention provides a groove type cam mechanism vibration isolation limiting device which comprises a base, and a cam mechanism, cam limiting baffles, a ball screw, an energy absorber and an energy absorber fixing seat which are arranged on the base, wherein the number of the cam limiting baffles is two, the two cam limiting baffles are arranged on two sides of the cam mechanism at intervals in parallel, the ball screw penetrates through the cam limiting baffles to be connected with the cam mechanism, the energy absorber is arranged on the energy absorber fixing seat beside the two cam limiting baffles and is connected with the cam mechanism, the cam mechanism comprises a cam, a push rod limiting plate and a roller, limiting holes are formed in the push rod limiting plate, annular grooves are formed in the wheel surface of the cam, one end of the push rod is connected with the grooves through the roller, and the other end of the push rod penetrates through the limiting holes to be connected with the energy absorber.
As an improvement of the technical scheme, a first connecting buckle used for being connected with the energy dissipater is arranged on one side of the push rod connected with the energy dissipater.
As an improvement of the technical scheme, a second connecting buckle is arranged at the top of the energy absorber fixing seat, and the second connecting buckle and the first connecting buckle are arranged on the same horizontal height.
As an improvement of the above technical solution, the ball screw includes two ball nuts, the cam is clamped between the two ball nuts, and a thrust bearing is respectively mounted on one surface of the two ball nuts facing away from the cam.
As an improvement of the technical scheme, a plurality of bolt holes are formed in the base, a concrete abutment is further arranged below the base, and the base is fixed on the concrete abutment through the bolt holes.
As an improvement of the technical scheme, one surface of the cam limiting baffle plate, which is opposite to the cam mechanism, is provided with one or more fixing stiffening ribs for supporting the cam limiting baffle plate.
Compared with the prior art, the vibration isolation limiting device of the groove type cam mechanism has the following beneficial effects:
in the invention, the horizontal movement is converted into the rotary movement and then the rotary movement is converted into the reciprocating linear movement through the action of the ball screw and the cam mechanism, so that the energy dissipater always generates limited reciprocating displacement within the allowable range, and the problems that the energy dissipater is difficult to exert effective energy consumption capacity if the displacement or the speed is small, and the energy dissipater is required to adopt a large-tonnage large-stroke energy dissipater if the displacement or the speed is large are solved, so that the manufacturing cost is high are solved. In addition, the sliding friction is changed into rolling friction by the mutual matching of the annular groove of the cam and the push rod, so that the friction resistance in the transmission mechanism is greatly reduced, the mechanism is prevented from being blocked in the transmission process, and the mechanism can always work normally. Meanwhile, according to actual engineering requirements, the shape of the cam groove can be changed, so that the moving track of the cam groove pushing roller can be changed, and an ideal control effect can be achieved.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.
FIG. 1 is a perspective view of a vibration isolation limiting device for a grooved cam mechanism according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a vibration isolation limiting device for a grooved cam mechanism according to an embodiment of the present invention;
FIG. 3 is a perspective view of a cam mechanism provided by an embodiment of the present invention;
fig. 4 is a schematic connection diagram of a plurality of vibration isolation limiting devices of a groove cam mechanism according to an embodiment of the present invention.
Wherein, 1-ball screw; 11-ball nut; 12-thrust bearings; 2-cams; 21-a roller; 22-push rod; 23-a push rod limiting plate; 24-a first connecting buckle; 3-energy dissipaters; 31-a second connecting buckle; 32-an energy dissipater holder; 4-a base; 41-bolt holes; 5-a cam limit baffle; 51-stiffeners; 61-a first shock insulation limiting device; 7-building or bridge structures; 71-a buttress on the shock insulation layer; 72-a shock insulation support; 73-a buttress under the shock insulation layer; 8-concrete abutment.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1-3, the invention provides a groove type cam mechanism vibration isolation limiting device, which comprises a base 4, a cam mechanism, cam limiting baffles 5, a ball screw 1, an energy dissipater 3 and an energy dissipater fixing seat 32, wherein the cam limiting baffles 5 are arranged on the base, the two cam limiting baffles 5 are arranged on two sides of the cam mechanism at intervals in parallel, the ball screw 1 passes through the cam limiting baffles 5 to be connected with the cam mechanism, and the energy dissipater 3 is arranged on the energy dissipater fixing seat 32 beside the two cam limiting baffles 5 and is connected with the cam mechanism; the cam mechanism comprises a cam 2, a push rod 22, a push rod limiting plate 23 and a roller 21, wherein a limiting hole is formed in the push rod limiting plate 23, an annular groove is formed in the wheel surface of the cam 2, one end of the push rod 22 is connected with the groove through the roller 21, and the other end of the push rod 22 penetrates through the limiting hole and is connected with the energy absorber 3. Specifically, the ball screw 1 is provided with a thrust bearing 12, the ball screw 1 is connected with a cam 2 of the cam mechanism through a ball nut 11, and the cam 2 keeps the cam 2 in contact with the push rod 22 all the time through a roller on the push rod 22 placed in the groove through an annular groove. In the invention, the horizontal movement is converted into the rotary movement by the action of the ball screw 1 and the cam mechanism, and then the rotary movement is converted into the reciprocating linear movement, so that the energy dissipater 3 always generates limited reciprocating displacement within the allowable range, and the problems that the effective energy consumption capacity is difficult to develop if the displacement or the speed of the energy dissipater 3 is small, and the cost is high because a large-tonnage large-stroke energy dissipater is needed if the displacement or the speed of the energy dissipater 3 is large are solved. In addition, the sliding friction is changed into rolling friction by the mutual matching of the annular groove of the cam 2 and the push rod 22, so that the friction resistance in the transmission mechanism is greatly reduced, the mechanism is prevented from being blocked in the transmission process, and the mechanism can always work normally. Meanwhile, according to actual engineering requirements, the shape of the groove of the cam 2 can be changed, so that the running track of the roller 21 pushed by the groove of the cam 2 can be changed, and an ideal control effect can be achieved.
More preferably, in the present embodiment, a first connecting buckle 24 for connecting with the energy dissipater 3 is provided at one side of the push rod 22.
The invention provides a groove type cam mechanism shock insulation limiting device, which comprises the following working processes: when an earthquake occurs, the pier 71 on the shock insulation layer of the building or bridge structure connected with the ball screw 1 pushes the ball screw 1 to horizontally move, the ball screw 1 horizontally moves to drive the ball nut 11 to rotate, the cam limit baffle 5 limits the ball nut 11 to horizontally move through the thrust bearing 12, the ball nut 11 rotates to drive the cam 2 to rotate, the cam 2 is kept in contact with the push rod 22 through the roller 21, the push rod 22 is pushed to reciprocate, the push rod 22 drives the first connecting buckle 24 to reciprocate, the first connecting buckle 24 reciprocates to absorb energy through the energy dissipation device 3, and the shock insulation layer of the building or bridge structure is limited.
More preferably, in this embodiment, the push rod limiting plate 23 is fixedly connected between the two cam limiting plates 5, so that the push rod 22 makes a reciprocating linear motion along a horizontal direction through the limiting hole of the push rod limiting plate 23.
More preferably, in this embodiment, the cam 2 is clamped between two ball nuts 11, and a thrust bearing 12 is mounted on each of the two ball nuts 11 on the side facing away from the cam 2, so as to support the ball screw.
More preferably, in this embodiment, the base 4 is provided with a plurality of bolt holes 41, and the plurality of bolt holes 41 are distributed on the edge of the base 4 for installation and use of the base 4. The building or bridge structure 7 comprises an upper pier 71 of a shock insulation layer, a shock insulation support 72 and a lower pier 73 of the shock insulation layer, which are sequentially connected from top to bottom, wherein a concrete pier 8 is arranged below the base 4, the base 4 can be installed on the concrete pier 8 through bolt holes 41, a groove type cam mechanism shock insulation limiting device is connected with the upper pier 71 of the shock insulation layer, specifically, the height of the concrete pier 8 is adjusted according to the height of the upper pier 71 of the shock insulation layer, and the height of the groove type cam mechanism shock insulation limiting device is ensured to be consistent with the height of the upper pier 71 of the shock insulation layer.
More preferably, in the present embodiment, a second connecting buckle 31 is disposed on the top of the energy absorber fixing seat 32, the second connecting buckle 31 and the first connecting buckle 24 on the push rod 22 are disposed on the same horizontal level, and the distance between the first connecting buckle 24 and the second connecting buckle 31 is determined by the size of the energy absorber 3.
Preferably, in this embodiment, the cam limit stop 5 has one or more fixing stiffeners 51 for supporting the cam limit stop 5, so as to ensure the stability of the whole mechanism.
More preferably, in the present embodiment, the energy dissipater 3 may be replaced by another speed or displacement type energy dissipater, and the fixing form may be welding or bolting.
It should be further noted that, in another embodiment of the present invention, two or more amplifying devices are connected in series to form a shock insulation limiting device set. For example, as shown in fig. 4, the two shock-insulation limiting devices are connected in series, wherein a longer ball screw 1 is used between the first shock-insulation limiting device 61 and the second shock-insulation limiting device to connect the plurality of cams 2 in series, so as to complete the series connection. In the series process, it should be noted that: the initial rotation positions of the cams 2 connected in series are not in the same position, so that the energy consumption effect can be more effectively increased.
In the description of the present invention, it should be understood that the terms "upper," "lower," "left," "right," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description and for simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, as well as a specific orientation configuration and operation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood as appropriate by those of ordinary skill in the art.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.
Claims (5)
1. The vibration isolation limiting device for the groove type cam mechanism is characterized by comprising a base, and a cam mechanism, cam limiting baffles, ball screws, energy dissipaters and energy dissipater fixing seats which are arranged on the base, wherein the two cam limiting baffles are arranged, the two cam limiting baffles are arranged on two sides of the cam mechanism at intervals in parallel, the ball screws penetrate through the cam limiting baffles to be connected with the cam mechanism, the energy dissipaters are arranged on the energy dissipater fixing seats beside the two cam limiting baffles and are connected with the cam mechanism, the cam mechanism comprises a cam, a push rod limiting plate and rollers, limiting holes are formed in the push rod limiting plate, annular grooves are formed in the wheel surface of the cam, one end of the push rod is connected with the grooves through the rollers, and the other end of the push rod penetrates through the limiting holes to be connected with the energy dissipaters; be equipped with a plurality of bolt holes on the base, a plurality of the bolt hole distributes the edge of base, the base below still is equipped with the concrete abutment, the base passes through the bolt hole is fixed on the concrete abutment.
2. The groove-type cam mechanism vibration-isolation limiting device of claim 1, wherein a first connecting buckle used for being connected with the energy absorber is arranged on one side of the push rod connected with the energy absorber.
3. The grooved cam mechanism vibration isolation limiting device of claim 2, wherein a second connecting buckle is arranged at the top of the energy absorber fixing seat, and the second connecting buckle and the first connecting buckle are arranged on the same horizontal height.
4. A grooved cam mechanism shock insulation limiting device as recited in claim 1, wherein said ball screw includes two ball nuts, said cam is clamped between said two ball nuts, and a thrust bearing is mounted on a face of said two ball nuts facing away from said cam.
5. The grooved cam mechanism vibration isolation stop of claim 1 wherein one side of said cam stop plate facing away from said cam mechanism is provided with one or more retaining stiffeners for supporting said cam stop plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711291043.XA CN108049306B (en) | 2017-12-08 | 2017-12-08 | Shock insulation limiting device of groove type cam mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711291043.XA CN108049306B (en) | 2017-12-08 | 2017-12-08 | Shock insulation limiting device of groove type cam mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108049306A CN108049306A (en) | 2018-05-18 |
| CN108049306B true CN108049306B (en) | 2023-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711291043.XA Active CN108049306B (en) | 2017-12-08 | 2017-12-08 | Shock insulation limiting device of groove type cam mechanism |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109322237B (en) * | 2018-11-26 | 2020-08-21 | 郑金生 | Bridge with rotary-reciprocating friction damper |
| CN109811924A (en) * | 2019-02-20 | 2019-05-28 | 广州大学 | A kind of cylinder cam-type damper response amplifying device |
| CN113855129A (en) * | 2021-09-27 | 2021-12-31 | 佛山长光智能制造研究院有限公司 | Operation stitching instrument driving device |
| CN113855128A (en) * | 2021-09-27 | 2021-12-31 | 佛山长光智能制造研究院有限公司 | Operation stitching instrument driving device |
| CN117728624B (en) * | 2024-02-18 | 2024-05-14 | 无锡艾尔特线性运动机械有限公司 | Direct current electric putter based on photovoltaic cell board supports usefulness |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002042659A2 (en) * | 2000-11-27 | 2002-05-30 | Kang Song Doug | Smart hybrid damper |
| JP2003106369A (en) * | 2001-09-28 | 2003-04-09 | Tokkyokiki Corp | Variable friction damper |
| CN204326293U (en) * | 2014-12-16 | 2015-05-13 | 湖南科技大学 | Displacement rotating scale-up version marmem damper |
| CN107313526A (en) * | 2017-07-03 | 2017-11-03 | 同济大学 | Become friction-type gear inertia damping device |
| CN207904757U (en) * | 2017-12-08 | 2018-09-25 | 广州大学 | A kind of plough groove type cam mechanism shock insulation limiting device |
-
2017
- 2017-12-08 CN CN201711291043.XA patent/CN108049306B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002042659A2 (en) * | 2000-11-27 | 2002-05-30 | Kang Song Doug | Smart hybrid damper |
| JP2003106369A (en) * | 2001-09-28 | 2003-04-09 | Tokkyokiki Corp | Variable friction damper |
| CN204326293U (en) * | 2014-12-16 | 2015-05-13 | 湖南科技大学 | Displacement rotating scale-up version marmem damper |
| CN107313526A (en) * | 2017-07-03 | 2017-11-03 | 同济大学 | Become friction-type gear inertia damping device |
| CN207904757U (en) * | 2017-12-08 | 2018-09-25 | 广州大学 | A kind of plough groove type cam mechanism shock insulation limiting device |
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| CN108049306A (en) | 2018-05-18 |
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