CN108004909B - Shock insulation limiting device of gear and crank connecting rod combined mechanism - Google Patents
Shock insulation limiting device of gear and crank connecting rod combined mechanism Download PDFInfo
- Publication number
- CN108004909B CN108004909B CN201711291109.5A CN201711291109A CN108004909B CN 108004909 B CN108004909 B CN 108004909B CN 201711291109 A CN201711291109 A CN 201711291109A CN 108004909 B CN108004909 B CN 108004909B
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- Prior art keywords
- connecting rod
- gear
- crank
- energy
- limiting device
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Classifications
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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
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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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- 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)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Environmental & Geological Engineering (AREA)
- Transmission Devices (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a vibration isolation limiting device of a gear and crank connecting rod combined mechanism, which comprises a base, a gear mechanism, a crank connecting rod mechanism, side limiting baffles, a ball screw, an energy absorber and an energy absorber fixing seat, wherein the gear mechanism is arranged on the base, a driving wheel of the gear mechanism is connected with a nut of the ball screw, a driven wheel of the gear mechanism is connected with the crank connecting rod mechanism, the energy absorber fixing seat is arranged on one side of the vibration isolation limiting device, one end of the energy absorber is connected with the upper end of the energy absorber fixing seat, the other end of the energy absorber is connected with the crank connecting rod mechanism, the side limiting baffles comprise two side limiting baffles, the gear and crank connecting rod combined mechanism is positioned between the two side limiting baffles, the ball screw reciprocates, and the energy absorber reciprocates under the action of the gear and crank connecting rod combined mechanism to dissipate energy. The invention can effectively limit the displacement of the shock insulation layers of structures such as building bridges and the like in the earthquake.
Description
Technical Field
The invention relates to the technical field of earthquake resistance and shock absorption of building structures and bridge structures, in particular to an earthquake resistance limiting device of a gear and crank connecting rod combined 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. The vibration isolation technology needs to limit the displacement of the vibration isolation layer through the energy dissipater, and the energy dissipation and vibration reduction technology needs to dissipate the earthquake energy through the energy dissipater. 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 vibration isolation limiting technology adopts a displacement or speed related energy dissipater, the displacement or speed of the energy dissipater is smaller, the effective energy consumption capacity is difficult to develop, and when the displacement or speed of the energy dissipater is larger, the energy dissipater needs to adopt a large-tonnage large-stroke energy dissipater, so that the manufacturing cost is higher.
In order to solve the problems, the invention provides a vibration isolation limiting device of a gear and crank connecting rod combined mechanism, which is characterized by comprising a base, a gear mechanism, a crank connecting rod mechanism, side limiting baffles, a ball screw, energy dissipaters and energy dissipater fixing seats, wherein the gear mechanism, the crank connecting rod mechanism, the side limiting baffles, the ball screw, the energy dissipaters and the energy dissipater fixing seats are arranged on the base;
the gear mechanism comprises a driving wheel and a driven wheel which are meshed with each other, the crank connecting rod mechanism comprises a crank, a connecting rod and a moving pair, the moving pair comprises a frame and a sliding block which is connected with the frame in a sliding mode, the driving wheel is connected with a ball screw, the driven wheel is linked with the connecting rod through the crank, one end, away from the crank, of the connecting rod is connected with one end of the sliding block, a push rod is arranged at the other end of the sliding block, and the push rod is 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 at one end 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 technical scheme, the driving wheel is clamped between the two ball nuts, and a thrust bearing is respectively arranged on one surface of the two ball nuts, which is away from the driving wheel.
As an improvement of the technical scheme, the base is provided with a plurality of mounting holes, a concrete abutment is further arranged below the base, and the base is fixed on the concrete abutment through the mounting holes.
As an improvement of the technical scheme, one or more frame stiffening ribs for supporting the frame are arranged on the back surface of the frame.
As an improvement of the above technical solution, the side limiting baffle has one or more fixing stiffening ribs for supporting the side limiting baffle.
Compared with the prior art, the vibration isolation limiting device of the gear and crank connecting rod combined mechanism has the following beneficial effects:
in the invention, the horizontal motion is converted into the rotary motion through the functions of the ball screw, the gear mechanism and the crank connecting rod mechanism, and then the rotary motion is converted into the reciprocating linear motion, so that the energy dissipater always generates limited reciprocating displacement within the allowable range, and the force amplifying effect can even be tens times through reasonably designing the sizes of the driving wheel, the driven wheel, the crank and the connecting rod. When the structural displacement is smaller or the speed is slower, the energy consumption of the damper can be effectively increased, the vibration reduction effect is obviously improved, and the damage to structures such as buildings, bridges and the like in an earthquake can be effectively reduced. The problems that if the displacement or the speed of the energy dissipater is small, the effective energy consumption capacity is difficult to develop, and if the displacement or the speed of the energy dissipater is large, a large-tonnage large-stroke energy dissipater is needed, and the manufacturing cost is high are solved. Meanwhile, the combination of the gear mechanism and the crank connecting rod mechanism has the characteristics of convenience in lubrication, light abrasion, long service life, large transmission power and stable operation, and is suitable for high-speed mechanical movement. The driving wheel, the driven wheel, the crank and the connecting rod are easy to process, can obtain higher precision, and are low in cost and easy to realize.
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 shock insulation limiting device of a gear and crank connecting rod combined mechanism provided by an embodiment of the invention;
FIG. 2 is a cross-sectional view of a shock insulation limiting device for a gear and crank link assembly according to an embodiment of the present invention;
FIG. 3 is a diagram showing a state of engagement of a gear mechanism with a crank mechanism set according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a connection of a plurality of gears and a shock insulation limiting device of a crank-link assembly mechanism in series according to an embodiment of the present invention.
Wherein, 1-ball screw; 11-ball nut; 12-thrust bearings; 21-a driving wheel; 22-driven wheel; 31-crank; 32-connecting rods; 33-a first connecting buckle; 34-push rod; 35-a mobile pair; 351-a frame; 352-slider; 353-frame stiffeners; 4-energy dissipater; 41-a second connecting buckle; 42-fixing base of energy dissipater; 5-a base; 51-mounting holes; 6-side limiting baffles; 61-fixing stiffeners; 71-a first shock insulation limiting device; 72-a second shock insulation limiting device; 8-concrete abutment; 9-building structures or bridge structures; 91-a buttress on the shock insulation layer; 92-a shock insulation support; 93-piers under the shock insulation layer.
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 vibration isolation limiting device of a gear and crank connecting rod combined mechanism, which comprises a base 5, a gear mechanism, a crank connecting rod mechanism, side limiting baffles 6, a ball screw 1, an energy dissipater 4 and an energy dissipater fixing seat 42, wherein the gear mechanism and the crank connecting rod mechanism are arranged on the base 5; the gear mechanism comprises a driving wheel 2 and a driven wheel 3 which are meshed with each other, the crank-link mechanism comprises a crank 31, a connecting rod 32 and a moving pair 35, the moving pair 35 comprises a frame 351 and a sliding block 352 which is connected to the frame 351 in a sliding mode, the driving wheel 21 is connected with the ball screw 1, the driven wheel is linked with the connecting rod 32 through the crank 31, one end, far away from the crank 31, of the connecting rod 32 is connected with one end of the sliding block 352, a push rod 34 is arranged at the other end of the sliding block 352, and the push rod 34 is connected with the energy absorber 4. In the invention, the horizontal motion is converted into the rotary motion through the functions of the ball screw 1, the gear mechanism and the crank connecting rod mechanism, and then the rotary motion is converted into the reciprocating linear motion, so that the energy absorber 4 always generates limited reciprocating displacement within the allowable range, and the force amplifying effect can even reach tens times through reasonably designing the sizes of the driving wheel 21, the driven wheel 22, the crank 31 and the connecting rod 32. The problems that if the displacement or the speed of the energy dissipater 4 is small, the effective energy consumption capacity is difficult to develop, and if the displacement or the speed of the energy dissipater 4 is large, a large-tonnage large-stroke energy dissipater is needed, and the manufacturing cost is high are solved. Meanwhile, the combination of the gear mechanism and the crank connecting rod mechanism has the characteristics of convenience in lubrication, light abrasion, long service life, large transmission power and stable operation, and is suitable for high-speed mechanical movement. The driving wheel 21, the driven wheel 22, the crank 31 and the connecting rod 32 are easy to process, can obtain higher precision, and are low in cost and easy to realize.
Preferably, in this embodiment, in order to facilitate installation and detachment without affecting connection stability, a first connecting buckle 33 for connecting with the energy dissipater 4 is disposed at the end of the push rod 34 connected with the energy dissipater 4. The top of the energy absorber fixing seat 42 is provided with a second connecting buckle 41, the second connecting buckle 41 and the first connecting buckle 33 are arranged on the same horizontal height so as to be connected with each other, and the distance between the first connecting buckle 33 and the second connecting buckle 41 is determined by the size of the energy absorber 4.
More preferably, in the present embodiment, the driving wheel 21 is clamped between two ball nuts 11, and a thrust bearing 12 is mounted on a surface of each ball nut 11 facing away from the driving wheel 21, so as to support the ball screw 1.
More preferably, in this embodiment, the base 5 is provided with a plurality of mounting holes 51, and the plurality of mounting holes 51 are distributed on the edge of the base 5 for mounting the base 5. Building structure or bridge structure 9 include by last to the last buttress 91 in shock insulation layer that connects gradually down, shock insulation support 92 and buttress 93 under the shock insulation layer, the base 5 below is provided with concrete abutment 8, base 5 can install on concrete abutment 8 through mounting hole 51, gear and crank link combined mechanism shock insulation stop device are connected with buttress 91 on the shock insulation layer, concrete, the height of concrete abutment 8 is according to the altitude mixture control of buttress 91 on the shock insulation layer, guarantee that gear and crank link combined mechanism shock insulation stop device's height keeps unanimous with the altitude mixture of buttress 91 on the shock insulation layer.
Preferably, in this embodiment, one or more frame stiffeners are provided on the back of the frame 351 to support the frame 351, thereby ensuring stability of the whole mechanism.
Preferably, in this embodiment, the lateral limit stop 6 has one or more fixing stiffeners 61 for supporting the lateral limit stop 6, ensuring the stability of the whole mechanism.
Preferably, in this embodiment, the energy dissipater 4 is a speed or displacement type energy dissipater, and the fixing mode can be welding or bolting.
The invention provides a shock insulation limiting device of a gear and crank connecting rod combined mechanism, which comprises the following working processes: when an earthquake occurs, the strut 91 on the shock insulation layer connected with the ball screw 1 pushes the ball screw 1 to move horizontally, the ball screw 1 moves horizontally to drive the ball nut 11 to rotate, the side limiting baffle 6 limits the ball nut 11 to move horizontally through the thrust bearing 12, the ball nut 11 rotates to drive the driving wheel 21 to rotate, the driving wheel 21 drives the driven wheel 22 to rotate, the driven wheel 22 drives the sliding block 352 to reciprocate along the track through the crank 31 and the connecting rod 32, the push rod 34 on the sliding block 352 reciprocates to drive the first connecting buckle 33 and the second connecting buckle 41 to reciprocate, the first connecting buckle 33 and the second connecting buckle 41 reciprocate to absorb energy through the energy absorber 4, and the shock insulation layer displacement is limited.
It should be further noted that, in another embodiment of the present invention, two or more of the shock insulation limiting devices are connected in series to form a shock insulation limiting device set. For example, the situation that two gears are connected in series with the shock insulation limiting device of the crank-link combined mechanism is shown in fig. 4, wherein a plurality of driving wheels are connected in series by using a longer ball screw between the first shock insulation limiting device 71 of the first gear and crank-link combined mechanism and the second shock insulation limiting device 72 of the second gear and crank-link combined mechanism, so as to complete the series connection work.
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 (6)
1. The vibration isolation limiting device for the gear and crank connecting rod combined mechanism is characterized by comprising a base, a gear mechanism, a crank connecting rod mechanism, side limiting baffles, a ball screw, energy dissipaters and energy dissipater fixing seats, wherein the gear mechanism, the crank connecting rod mechanism, the side limiting baffles, the ball screw, the energy dissipaters and the energy dissipater fixing seats are arranged on the base;
the gear mechanism comprises a driving wheel and a driven wheel which are meshed with each other, the crank-link mechanism comprises a crank, a connecting rod and a moving pair, the moving pair comprises a rack and a sliding block connected to the rack, the driving wheel is connected with the ball screw, the driven wheel is linked with the connecting rod through the crank, one end of the connecting rod, far away from the crank, is connected with one end of the sliding block, the other end of the sliding block is provided with a push rod, and the push rod is connected with the energy absorber;
the base is provided with a plurality of mounting holes, a concrete abutment is arranged below the base, and the base is fixed on the concrete abutment through the mounting holes;
the plurality of mounting holes are distributed on the edge of the base.
2. The shock insulation limiting device of the gear and crank connecting rod combined mechanism according to claim 1, wherein a first connecting buckle used for being connected with the energy absorber is arranged at one end of the push rod connected with the energy absorber.
3. The shock insulation limiting device of a gear and crank connecting rod combined mechanism according to 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. The shock insulation limiting device of a gear and crank connecting rod combined mechanism according to claim 1, wherein the driving wheel is clamped between two ball nuts, and a thrust bearing is respectively arranged on one surface of the two ball nuts, which is away from the driving wheel.
5. The shock isolation and limiting device of a gear and crank combination mechanism of claim 1 wherein the back of the frame has one or more frame stiffeners for supporting the frame.
6. A gear and crank link combination vibration isolation and containment device as claimed in claim 1, wherein said side containment barrier has one or more fixed stiffeners for supporting said side containment barrier.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711291109.5A CN108004909B (en) | 2017-12-08 | 2017-12-08 | Shock insulation limiting device of gear and crank connecting rod combined mechanism |
| JP2018229487A JP6590461B2 (en) | 2017-12-08 | 2018-12-06 | Gear-crank rod combination mechanism seismic isolation stopper device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711291109.5A CN108004909B (en) | 2017-12-08 | 2017-12-08 | Shock insulation limiting device of gear and crank connecting rod combined mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN108004909A CN108004909A (en) | 2018-05-08 |
| CN108004909B true CN108004909B (en) | 2023-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711291109.5A Active CN108004909B (en) | 2017-12-08 | 2017-12-08 | Shock insulation limiting device of gear and crank connecting rod combined mechanism |
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| JP (1) | JP6590461B2 (en) |
| CN (1) | CN108004909B (en) |
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| CN108842600B (en) * | 2018-06-27 | 2019-10-08 | 河南晟源路桥工程管理有限公司 | Assembly concrete bridge pier |
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| CN109811923A (en) * | 2019-02-20 | 2019-05-28 | 广州大学 | A kind of gear type marmem damper with response amplification effect |
| CN110463575A (en) * | 2019-08-20 | 2019-11-19 | 广西大学 | A kind of Mobile drip-irrigation and microspray irrigation fertilizer apparatus |
| CN111469190A (en) * | 2020-04-30 | 2020-07-31 | 福州大学 | High-precision slitting machine without reverse clearance and working method thereof |
| CN111981082B (en) * | 2020-08-24 | 2021-08-24 | 湖南大学 | Damper vibration reduction system for inhibiting vertical vibration of bridge girder |
| CN113374110B (en) * | 2021-07-09 | 2022-07-22 | 湖南大学 | Displacement amplification type metal torsion energy dissipation damper |
| CN115086011A (en) * | 2022-06-13 | 2022-09-20 | 北京融讯智晖技术有限公司 | Network security isolation device based on video cloud command system |
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| JPH0213666A (en) * | 1988-06-28 | 1990-01-18 | Kajima Corp | Vibration damping device for structure |
| JP2682774B2 (en) * | 1992-09-14 | 1997-11-26 | 日立造船株式会社 | Structure damping device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08303055A (en) * | 1995-04-28 | 1996-11-19 | Mitsubishi Heavy Ind Ltd | Shock absorbing damper |
| JP2005009565A (en) * | 2003-06-18 | 2005-01-13 | Tokkyokiki Corp | Vibration damping apparatus |
| CN203584428U (en) * | 2013-05-10 | 2014-05-07 | 刘素华 | Apparatus for transforming rotational motion into reciprocating impact motion |
| CN106245520A (en) * | 2015-06-15 | 2016-12-21 | 徐工集团工程机械股份有限公司 | Bridge inspection vehicle walking mechanism and bridge inspection vehicle |
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| CN106894536A (en) * | 2017-04-10 | 2017-06-27 | 广州大学 | A kind of novel damping oil damper |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP6590461B2 (en) | 2019-10-16 |
| JP2019105371A (en) | 2019-06-27 |
| CN108004909A (en) | 2018-05-08 |
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