CN117847134A - Inertial container based on track nonlinear energy trap - Google Patents
Inertial container based on track nonlinear energy trap Download PDFInfo
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- CN117847134A CN117847134A CN202410208815.2A CN202410208815A CN117847134A CN 117847134 A CN117847134 A CN 117847134A CN 202410208815 A CN202410208815 A CN 202410208815A CN 117847134 A CN117847134 A CN 117847134A
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Abstract
The invention relates to an inertial container based on a track nonlinear energy trap, which is used for vibration reduction of a controlled structure, and comprises a track unit, a connecting unit, an inertial container unit and a fixing unit for supporting the inertial container unit, wherein the track unit is fixed on the controlled structure, one end of the connecting unit is in rolling connection with the track unit, the other end of the connecting unit is connected with the inertial container unit, the track unit is used for displacement and force transmission between the controlled structure and the inertial container unit, and the motion direction of the inertial container unit is mutually perpendicular to that of the controlled structure. Compared with the prior art, the track type energy well is combined with the inertial container, so that the inertial container realizes nonlinear output force, the track is adjustable, the inertial container can simply and practically realize nonlinear inertial mass and nonlinear rigidity, and the characteristic of control force is changed.
Description
Technical Field
The invention relates to the field of vibration reduction devices, in particular to an inertial container based on an orbit nonlinear energy well.
Background
Compared with the traditional mass element, the inertial energy element has a plurality of advantages, and the inertial energy element can generate apparent mass far larger than that of the inertial energy element, so that the light weight and the performance improvement of the device are realized, and the single-end connection characteristic of the traditional mass element is broken through. The inertial mass element is capable of adjusting the inertial properties of the structure without adding additional load caused by the additional mass. The inertial container is usually used together with a spring element and a damping element to form an inertial container system, so that flexible tuning and damping synergy are realized. Inertial systems are one of the most commonly used passive vibration controls, and are widely used in vibration control in the civil engineering field. The linear inertial volume system has good vibration damping performance in a certain frequency range. However, when the natural vibration frequency of the structure changes due to stiffness degradation and the like, or when the excitation frequency outside the structure is not within the vibration reduction frequency band, the linear inertial volume system may lose the vibration reduction effect and even amplify the structural response.
Nonlinear vibration control systems have been demonstrated to broaden the effective frequency band and to reduce the structural response more effectively. However, the current nonlinear vibration control system is mainly implemented by geometric nonlinearity, such as connecting a spring element or other inertial element in the vertical direction of the structure motion to implement nonlinearity, and the nonlinearity characteristics brought by the structure are relatively single.
Disclosure of Invention
The invention aims to overcome the defect that in the prior art, the nonlinearity characteristic is single by connecting a spring element or other inertial energy element in the vertical direction of structural movement to realize nonlinearity, and provides an inertial container based on an orbit nonlinearity energy well.
The aim of the invention can be achieved by the following technical scheme:
the utility model provides a container that is used to move based on track nonlinear energy trap, it includes track unit, connecting element, is used to hold the unit and is used for supporting the fixed unit that is used to hold the unit to move to the container, the track unit is fixed on controlled structure, the one end roll of connecting element connects the track unit, and the other end is connected and is used to hold the unit to move to hold the unit to move to the transfer of displacement and force between the unit to move to the container, the direction of movement of the unit that is used to move to hold is mutually perpendicular with the direction of movement of controlled structure.
Preferably, the track unit comprises a base plate and a track, the base plate is of a T-shaped structure, one end of the base plate is connected with the controlled structure, and the track is fixed on one side of the base plate.
Preferably, the connecting unit comprises a connecting piece and a first bearing and a second bearing which are positioned on the same side of the connecting piece, the first bearing and the second bearing can be rotatably fixed on the connecting piece, the distance between the first bearing and the second bearing is matched with the thickness of a track, the track is positioned between the first bearing and the second bearing, and the first bearing and the second bearing are both in rolling connection with the track.
Preferably, the connecting unit further comprises a first rotating shaft and a second rotating shaft, and the connecting piece is provided with a first connecting hole and a second connecting hole; one end of the first rotating shaft is fixed in the first connecting hole, the other end of the first rotating shaft is connected with the first bearing, one end of the second rotating shaft is fixed in the second connecting hole, and the other end of the second rotating shaft is connected with the second bearing.
Preferably, the connecting unit further comprises a third bearing and a connecting rod, the third bearing is fixed on the connecting piece, the third bearing and the track are located on two opposite sides of the connecting piece, one end of the connecting rod is connected with the third bearing, and the other end of the connecting rod is connected with the inertial unit.
Preferably, the inertial container unit comprises a screw rod and a flywheel, one end of the screw rod is connected with the connecting rod, the screw rod is connected with the fixing unit through a bearing, a ball nut is arranged on the screw rod, and the flywheel is fixed on the ball nut.
Preferably, the number of the ball nuts is large, and flywheels are fixed on each ball nut.
Preferably, the fixing unit comprises a supporting frame, a first bearing seat and a second bearing seat are arranged on the supporting frame, the first bearing seat and the second bearing seat are fixed at one end of the supporting frame, the screw rod is respectively connected with the first bearing seat and the second bearing seat through bearings, and the screw rod nut is respectively positioned between the first bearing seat and the second bearing seat.
Preferably, the connecting rod is connected with a screw bolt.
Preferably, one end of the connecting rod, which is far away from the connecting piece, is provided with a fixing hole, two ends of the screw rod are provided with clamping blocks matched with the fixing hole, two sides of the fixing hole are provided with first bolt holes, and the clamping blocks are provided with second bolt holes corresponding to the first bolt holes.
Compared with the prior art, the invention has the following advantages:
(1) According to the scheme, the track unit is driven to move by the controlled structure, the response of the track unit and the controlled structure is consistent, the connecting unit drives the inertial unit to move along the track unit, the inertial unit is perpendicular to the moving direction of the controlled structure, the inertial unit moves and generates force, the force of the inertial unit is transmitted to the moving direction of the controlled structure through the connecting unit and the track unit, nonlinear force is provided for the controlled structure, and vibration reduction effect on the controlled structure is achieved. According to the scheme, on the basis of not changing the parameters of the inertial unit device, the control force of the inertial unit on the controlled structure is enabled to be nonlinear, the inertial mass represented by the inertial unit is changed, and the characteristics of the control force can be changed by adjusting the shape of the track.
(2) The connecting unit plays a vital role in transferring displacement and force between the track and the screw rod, the connecting unit is required to be accurately matched with the track, the displacement of the controlled structure is transferred to the inertial holding unit through the track, and the force generated by the inertial holding unit can be transferred to the controlled structure through the track. The common tangent line of the ball bearings at two sides of the track is coincident with the tangent line of the contact point of the track, the common tangent line of the ball bearings at two sides of the track is connected with the tangent line of the contact point of the track by the connecting piece, and the ball bearings at two sides of the track are always guaranteed to be tangent with the track by rotating the connecting piece driven by the ball bearings in the third connecting hole at the upper side of the connecting piece. A pair of ball bearings roll inside and outside the track to realize track connection, so that friction can be reduced as much as possible, and the track connection is close to a mechanical model.
(3) The scheme combines the inertial container and the track type nonlinear energy well, improves a single-node mass block of the track type nonlinear energy well into a double-node inertial container element, realizes the light weight of the track type nonlinear energy well, and changes the mechanical property of the inertial container. In the same way, the components such as the spring, the damping and the like are combined with the track type nonlinear energy well through the connecting mode of the scheme, the components of the restoring force and the damping force are changed, nonlinear rigidity and nonlinear damping are realized, and a foundation is provided for the development of a nonlinear vibration control system.
Drawings
FIG. 1 is a schematic diagram of the structure of an inertial container based on an orbital nonlinear energy trap provided by the invention;
FIG. 2 is a schematic diagram of a structure in which a rail and a screw are connected by a connecting unit;
FIG. 3 is a schematic structural view of a connector according to the present invention;
FIG. 4 is a schematic view of a connecting rod according to the present invention;
in the figure: 1. the device comprises a bottom plate, 2, a track, 3, a connecting piece, 4, a connecting rod, 5, a screw rod, 6, a bearing, 7, a flywheel, 8, a supporting frame, 9, a controlled structure, 10, a foundation, 31, a first bearing, 32, a second bearing, 33, a first rotating shaft, 34, a second rotating shaft, 35, a third bearing, 36, a first connecting hole, 37, a second connecting hole, 38, a third connecting hole, 41, a fixed hole, 42, a first bolt hole, 51, a clamping block, 52, a second bolt hole, 81, a first bearing seat, 82 and a second bearing seat.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention.
It should be noted that the terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying a number of technical features being 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 application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
Example 1
As shown in fig. 1, the present embodiment provides an inertial container based on a nonlinear energy trap of a track, where the inertial container includes a track unit, a connection unit, an inertial container unit, and a fixing unit for supporting the inertial container unit, where the track unit is fixed on a controlled structure 9, one end of the connection unit is connected with the track unit in a rolling manner, the other end is connected with the inertial container unit, the track unit is used for transferring displacement and force between the controlled structure 9 and the inertial container unit, and a movement direction of the inertial container unit is perpendicular to a movement direction of the controlled structure.
Working principle: the controlled structure 9 drives the track unit to move, the track unit is consistent with the response of the controlled structure 9, the connecting unit drives the inertial unit to move along the track unit, so that the inertial unit is perpendicular to the movement direction of the controlled structure 9, the inertial unit moves and generates force, the force of the inertial unit is transmitted to the movement direction of the controlled structure 9 through the connecting unit and the track unit, nonlinear force is provided for the controlled structure 9, and vibration reduction of the controlled structure 9 is realized.
According to the scheme, the controlled structure 9 drives the track unit to move, the track unit is consistent with the response of the controlled structure 9, the connecting unit drives the inertial unit to move along the track unit, the inertial unit is perpendicular to the movement direction of the controlled structure 9, the inertial unit moves and generates force, the force of the inertial unit is transmitted to the movement direction of the controlled structure 9 through the connecting unit and the track unit, nonlinear force is provided for the controlled structure 9, and the vibration reduction effect on the controlled structure 9 is achieved. According to the scheme, on the basis of not changing the parameters of the inertial unit device, the control force of the inertial unit on the controlled structure is enabled to be nonlinear, the inertial mass represented by the inertial unit is changed, and the characteristics of the control force can be changed by adjusting the shape of the track.
As a preferred embodiment, as shown in fig. 1 and 2, the rail unit includes a base plate 1 and a rail 2, the base plate 1 has a T-shaped structure, one end of the base plate 1 is connected to a controlled structure 9, and the rail 2 is fixed to one side of the base plate 1.
The connecting unit comprises a connecting piece 3 and a first bearing 31 and a second bearing 32 which are positioned on the same side of the connecting piece 3, the first bearing 31 and the second bearing 32 are rotatably fixed on the connecting piece 3, the distance between the first bearing 31 and the second bearing 32 is matched with the thickness of the track 2, the track 2 is positioned between the first bearing 31 and the second bearing 32, and the first bearing 31 and the second bearing 32 are in rolling connection with the track.
Further, the connecting unit further comprises a first rotating shaft 33 and a second rotating shaft 34, and a first connecting hole 36 and a second connecting hole 37 are formed in the connecting piece 3; one end of the first rotating shaft 33 is fixed in the first connecting hole 36, the other end is connected with the first bearing 31, one end of the second rotating shaft 34 is fixed in the second connecting hole 37, and the other end is connected with the second bearing 32.
The connecting unit is crucial in the displacement and force transmission between the track and the screw rod, the connecting unit needs to be accurately matched with the track, the displacement of the controlled structure is transmitted to the inertial volume unit through the track, and the force generated by the inertial volume unit can be transmitted to the controlled structure through the track. The common tangent line of the ball bearings at two sides of the track is coincident with the tangent line of the contact point of the track, the common tangent line of the ball bearings at two sides of the track is connected with the tangent line of the contact point of the track by the connecting piece, and the ball bearings at two sides of the track are always guaranteed to be tangent with the track by rotating the connecting piece driven by the ball bearings in the third connecting hole at the upper side of the connecting piece. A pair of ball bearings roll inside and outside the track to realize track connection, so that friction can be reduced as much as possible, and the track connection is close to a mechanical model.
Specifically, as shown in fig. 2, the connection unit further includes a third bearing 35 and a connection rod 4, the third bearing 35 is fixed on the connection member 3, the third bearing 35 and the track 2 are located at two opposite sides of the connection member 3, one end of the connection rod 4 is connected with the third bearing 35, and the other end is connected with the inertial unit. The connecting rod 4 is connected with the screw rod 5 through bolts.
Further, a fixing hole 41 is formed in one end, far away from the connecting piece 3, of the connecting rod 4, a clamping block 51 matched with the fixing hole 41 is arranged at two ends of the screw rod 5, first bolt holes 42 are formed in two sides of the fixing hole 41, and second bolt holes 52 corresponding to the first bolt holes 42 are formed in the clamping block 51.
Optionally, the inertial container unit comprises a screw rod 5 and a flywheel 7, one end of the screw rod 5 is connected with the connecting rod 4, the screw rod 5 is connected with the fixing unit through a bearing 6, a ball nut is arranged on the screw rod 5, and the flywheel 7 is fixed on the ball nut.
The number of the ball nuts is large, and the flywheel 7 is fixed on each ball nut. The fixing unit comprises a support frame 8, a first bearing seat 81 and a second bearing seat 82 are arranged on the support frame 8, the first bearing seat 81 and the second bearing seat 82 are fixed at one end of the support frame 8, the screw rod 5 is respectively connected with the first bearing seat 81 and the second bearing seat 82 through bearings 6, and ball nuts are respectively arranged between the first bearing seat 81 and the second bearing seat 82.
The scheme combines the inertial container and the track type nonlinear energy well, improves a single-node mass block of the track type nonlinear energy well into a double-node inertial container element, realizes the light weight of the track type nonlinear energy well, and changes the mechanical property of the inertial container. In the same way, the components such as the spring, the damping and the like are combined with the track type nonlinear energy well through the connecting mode of the scheme, the components of the restoring force and the damping force are changed, nonlinear rigidity and nonlinear damping are realized, and a foundation is provided for the development of a nonlinear vibration control system.
In connection with the above preferred embodiments, as shown in fig. 1 to 4, the present embodiment provides a more specific embodiment:
an inertial container based on a track type nonlinear energy trap comprises a bottom plate 1, a track 2, a connecting piece 3, a connecting rod 4, a screw rod 5, a bearing 6, a flywheel 7 and a supporting frame 8. In order to clearly show the connection mode of the nonlinear inertial volume, as shown in fig. 1, an application example of the nonlinear inertial volume in vibration isolation of the controlled structure 9 is provided. The controlled structure 9 and the foundation 10 are not part of the invention, and the controlled structure 9 and the foundation 10 should be changed according to a specific scene when the invention is applied to other scenes.
The rail 2 is fixed to the base plate 1 by means of welding or the like, and the base plate 1 is fixed to the controlled structure 9. The first bearing 31 and the second bearing 32 are ball bearings, the first bearing 31 and the second bearing 32 are distributed on two sides of the track 2, the first bearing 31 is fixedly arranged in a first connecting hole 36 on the lower side of the connecting piece 3 through a first rotating shaft 33, and the second bearing 32 is fixedly arranged in a second connecting hole 37 on the lower side of the connecting piece 3 through a second rotating shaft 34. The third bearing 35 is fixedly placed in a third connecting hole 38 on the upper side of the connecting piece 3, and the connecting rod 4 is placed inside the third bearing 35. The connecting rod 4 is connected with the screw rod 5 by bolts and the like. The flywheel 7 is fixed on a ball nut matched with the screw rod 5, and the ball screw is fixed on the supporting frame 8 through the bearing 6.
The track 2 acts as a transfer during operation, requiring transfer of the inertial container's response and force to the controlled structure. If the rail is deformed, the output composition of the rail type inertial container is inconsistent with the mechanical model, so the rail is made of materials with higher rigidity, such as alloy steel and the like. In order to facilitate the subsequent change of the nonlinear characteristics of the inertial container, a certain interval is reserved between the connecting piece 3 and the track 2, and the track 2 and the bottom plate 1 are convenient to replace.
For the connection of screw rod type inertial container, one end of the connecting rod 4 is provided with a fixing hole 41 and a first bolt hole 42, so that the connecting rod is convenient to connect with an inertial container unit. And the subsequent connection with other components can be realized by setting different connection modes according to the characteristics of the connection components.
The relative displacement direction of the two end points of the inertial container based on the track nonlinear energy well is perpendicular to the movement direction of the controlled structure 9. For screw-like inertial containers, the direction of the screw 5 when mounted is perpendicular to the direction of movement of the controlled structure 9. When the controlled structure 9 is displaced in the vertical direction, the track 2 moves together with the controlled structure 9, and the ball bearings on both sides of the track 2 roll along the track 2.
The connecting unit drives the screw rod 5 to translate horizontally, and drives the flywheel 7 fixed on the ball nut to rotate, so as to generate inertial capacity force. The inertial force is transmitted to the track 2 through the connecting unit, and after the transmission action of the track 2, the inertial force is finally transmitted to the nonlinear force of the controlled structure 9 in the moving direction of the controlled structure 9.
The foregoing describes in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the invention by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.
Claims (10)
1. The inerter based on the track nonlinear energy trap is characterized by comprising a track unit, a connecting unit, an inerter unit and a fixing unit for supporting the inerter unit, wherein the track unit is fixed on a controlled structure (9), one end of the connecting unit is connected with the track unit in a rolling mode, the other end of the connecting unit is connected with the inerter unit, the track unit is used for transmitting displacement and force between the controlled structure (9) and the inerter unit, and the movement direction of the inerter unit is mutually perpendicular to that of the controlled structure.
2. The inertial container based on an orbital nonlinear energy trap according to claim 1, characterized in that the orbital unit comprises a base plate (1) and an orbit (2), the base plate (1) is of T-shaped structure, one end of the base plate (1) is connected with a controlled structure (9), and the orbit (2) is fixed at one side of the base plate (1).
3. The inertial container based on the nonlinear energy trap of claim 2, wherein the connecting unit comprises a connecting piece (3) and a first bearing (31) and a second bearing (32) which are positioned on the same side of the connecting piece (3), the first bearing (31) and the second bearing (32) are rotatably fixed on the connecting piece (3), the distance between the first bearing (31) and the second bearing (32) is matched with the thickness of the track (2), the track (2) is positioned between the first bearing (31) and the second bearing (32), and the first bearing (31) and the second bearing (32) are in rolling connection with the track.
4. -an inertial container based on an orbital nonlinear energy trap according to claim 3, characterized in that the connection unit further comprises a first rotation shaft (33) and a second rotation shaft (34), the connection piece (3) being provided with a first connection hole (36) and a second connection hole (37); one end of the first rotating shaft (33) is fixed in the first connecting hole (36), the other end of the first rotating shaft is connected with the first bearing (31), one end of the second rotating shaft (34) is fixed in the second connecting hole (37), and the other end of the second rotating shaft is connected with the second bearing (32).
5. A inertial container based on a non-linear energy trap of claim 3, wherein the connection unit further comprises a third bearing (35) and a connecting rod (4), the third bearing (35) is fixed on the connection piece (3), the third bearing (35) is located at two opposite sides of the connection piece (3) with the track (2), one end of the connecting rod (4) is connected with the third bearing (35), and the other end is connected with the inertial container unit.
6. The inertial container based on the track nonlinear energy trap according to claim 5, wherein the inertial container unit comprises a screw rod (5), a bearing (6) and a flywheel (7), one end of the screw rod (5) is connected with a connecting rod (4), the screw rod (5) is connected with a fixing unit through the bearing (6), a ball nut is arranged on the screw rod (5), and the flywheel (7) is fixed on the ball nut.
7. An inertial container based on an orbital nonlinear energy trap according to claim 6, wherein the number of ball nuts is large, and flywheels (7) are fixed to each ball nut.
8. The inertial container based on the track nonlinear energy trap according to claim 6, characterized in that the fixing unit comprises a supporting frame (8), a first bearing seat (81) and a second bearing seat (82) are arranged on the supporting frame (8), the first bearing seat (81) and the second bearing seat (82) are fixed at one end of the supporting frame (8), the screw rod (5) is respectively connected with the first bearing seat (81) and the second bearing seat (82) through bearings (6), and the ball nuts are respectively arranged between the first bearing seat (81) and the second bearing seat (82).
9. Inertial container based on an orbital nonlinear energy trap according to claim 6, characterized in that the connecting rod (4) is bolted with a screw (5).
10. The inertial container based on the track nonlinear energy trap according to claim 9, characterized in that one end of the connecting rod (4) far away from the connecting piece (3) is provided with a fixing hole (41), two ends of the screw rod (5) are provided with clamping blocks (51) matched with the fixing hole (41), two sides of the fixing hole (41) are provided with first bolt holes (42), and the clamping blocks (51) are provided with second bolt holes (52) corresponding to the first bolt holes (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410208815.2A CN117847134A (en) | 2024-02-26 | 2024-02-26 | Inertial container based on track nonlinear energy trap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410208815.2A CN117847134A (en) | 2024-02-26 | 2024-02-26 | Inertial container based on track nonlinear energy trap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117847134A true CN117847134A (en) | 2024-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410208815.2A Pending CN117847134A (en) | 2024-02-26 | 2024-02-26 | Inertial container based on track nonlinear energy trap |
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| Country | Link |
|---|---|
| CN (1) | CN117847134A (en) |
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- 2024-02-26 CN CN202410208815.2A patent/CN117847134A/en active Pending
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