Multi-tuned mass damper with steel strand matched with mass block

Abstract

The utility model relates to the field of structural vibration control, in particular to a multi-tuned mass damper with steel strands and mass blocks. The multiple tuned mass damper with the stranded wire matched with the mass blocks comprises a damping box, a rope, a plurality of mass blocks and two sets of winding and unwinding mechanisms. Wherein the damping box is used for containing damping liquid; the rope is arranged in the damping box; the mass blocks are arranged on the rope, and the positions of the mass blocks relative to the rope can be adjusted; the take-up and pay-off mechanism is connected with the two ends of the rope and used for adjusting the tension of the rope and / or adjusting the effective length of the rope. The problem that in the prior art, damper control frequency debugging is troublesome can be solved.

Description

Technical Field

[0001] The invention relates to the field of structural vibration control, and in particular to a multi-tuned mass damper with a steel strand and a mass block. Background Art

[0002] Tuned mass dampers belong to the field of structural vibration control. The application of tuned mass dampers (TMD-Tuned MassDamper) in structural vibration control first originated from Frahm's research on dynamic vibration absorbers in 1909. Frahm's view is to use the vibration of one mass block to offset or control the movement of another mass block. The working principle of the TMD system is developed on the basis of this view. The traditional tuned mass damper consists of a mass block, a spring, and a damping device. At present, the tuned mass damper has been successfully used to control the vibration of engineering structures, such as wind vibration, earthquake and other forms of vibration.

[0003] For traditional tuned mass dampers, the control direction is mainly the extension and contraction direction of the spring. Frequency modulation requires adjusting the spring stiffness or mass block mass to adjust the control frequency of the damper, which will have a certain impact on the size of the damper (spring elongation and mass block size). Due to its shortcomings of single frequency, single control direction and troublesome frequency adjustment, its use in the field of structural engineering vibration reduction has certain limitations. Although multiple tuned mass dampers have improved the disadvantage of single control frequency to a certain extent, there is still the problem of troublesome control frequency adjustment. Summary of the invention

[0004] The present application provides a multi-tuned mass damper with a steel strand and a mass block, which can solve the problem of troublesome frequency adjustment of the damper control in the prior art.

[0005] In order to achieve the above objectives, the technical solution adopted by this application is:

[0006] The utility model provides a multi-tuned mass damper with a steel strand mass block, comprising:

[0007] A damping box, wherein the damping box is used to contain damping fluid;

[0008] A rope, wherein the rope is arranged in the damping box;

[0009] A plurality of mass blocks, each of which is disposed on the rope and can be adjusted relative to the rope;

[0010] The retracting and releasing mechanism is connected to the two ends of the rope and is used to adjust the tension of the rope and / or adjust the effective length of the rope.

[0011] In some optional solutions, a driving mechanism is provided on the mass block for driving the mass block to move on the rope and to fix the positions of the mass block and the rope relative to each other.

[0012] In some optional schemes, a through hole is provided in the middle of the mass block for the rope to pass through, and the driving mechanism includes a driving motor and a roller. The driving motor is connected to the mass block and is used to drive the roller to rotate, and the roller is used to abut against the rope.

[0013] In some optional schemes, a through hole is provided in the middle of the mass block for the rope to pass through, so that the mass block can move relative to the rope, and the mass block is equipped with a limiting mechanism for limiting the relative position of the mass block and the rope.

[0014] In some optional schemes, the retracting and releasing mechanism includes two electric winches, and the two electric winches are respectively connected to the two ends of the rope for retracting and releasing the rope.

[0015] In some optional schemes, the retracting and extending mechanism further includes an adjusting component, and the adjusting component is used to adjust the distance between the two electric winches.

[0016] In some optional solutions, the adjustment component includes:

[0017] A slide rail is arranged in the damping box and is arranged parallel to and spaced from the rope;

[0018] Two sliding members are slidably arranged on the slide rail and can be relatively fixed for installing the electric winch.

[0019] In some optional solutions, a limiting member is provided on the sliding member, and the limiting member is used to limit the relative position of the sliding member and the slide rail.

[0020] In some optional schemes, the mass block is made of iron, lead or zinc-aluminum alloy.

[0021] In some optional solutions, the rope is made of steel strands or steel wire ropes.

[0022] The beneficial effects brought about by the technical solution provided by the embodiment of the present application include: the damping box is set on the damped part, the mass is provided by the mass block, the stiffness is provided by the rope, and the damping parameters are provided by the rope and the damping fluid. When the control frequency needs to be changed, the effective length and tension of the rope are adjusted by the retracting mechanism, or the position of the mass block on the rope is adjusted, which is equivalent to adjusting the mass of the damper mass block. The retracting mechanism can easily adjust the effective length and tension of the rope to adjust the control frequency of the entire damper, which is convenient and easy, and can realize automatic control of the frequency when equipped with an automatic control system. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 It is a schematic diagram of the structure of a multi-tuned mass damper with steel strands and mass blocks in an embodiment of the present application.

[0025] In the figure: 1. damping box; 2. damping fluid; 3. rope; 4. mass block; 41. roller; 5. retracting and extending mechanism; 51. electric winch; 52. adjusting assembly; 521. slide rail; 522. sliding member; 523. limit member. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] The embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0028] like Figure 1 As shown, the utility model provides a multi-tuned mass damper with steel strands and mass blocks, comprising: a damping box 1, a rope 3, a plurality of mass blocks 4 and two sets of retracting and releasing mechanisms 5; wherein, the damping box 1 is used to contain the damping fluid 2; the rope 3 is arranged in the damping box 1; the plurality of mass blocks 4 are all arranged on the rope 3, and their positions relative to the rope 3 can be adjusted; the retracting and releasing mechanisms 5 connect the two ends of the rope 3, and are used to adjust the tension of the rope 3 and / or adjust the effective length of the rope 3.

[0029] When using a multi-tuned mass damper with a steel strand and a mass block, the damping box 1 is set on the damped part, the mass is provided by the mass block 4, the stiffness is provided by the rope 3, and the damping parameters are provided by the rope 3 and the damping fluid 2. When the control frequency needs to be changed, the effective length and tension of the rope 3 are adjusted by the retracting mechanism 5, or the position of the mass block 4 on the rope 3 is adjusted, which is equivalent to adjusting the mass of the damper mass block. The damper provided in the present application has a simple structure and can be arranged in multiple directions, such as vertical, horizontal or oblique. The mass blocks 4 are distributed on the rope 3 and can vibrate up and down, left and right, front and back like a rope. The vibration in the 360-degree direction in the plane vertical to the rope 3 can be controlled, and it has a good energy dissipation effect, and can play a good protective role for engineering structures. The damper has an obvious vibration reduction effect on slender components such as cable structures and hanger structures.

[0030] In this example, the effective length of the rope 3 refers to the length of the rope 3 between the fixed points at both ends of the rope 3.

[0031] In addition, when using the multiple tuned mass damper with the steel strand mass block, the damping liquid 2 is placed in the damping box 1, and the following requirements must be met:

[0032] When the rope 3 is in a horizontal state, the mass block 4 is at least partially immersed in the damping fluid 2 ; when the rope 3 is in a vertical state, among all the mass blocks 4 , the mass block 4 located at the bottom is at least partially immersed in the damping fluid 2 .

[0033] In this embodiment, a driving mechanism is provided on the mass block 4 for driving the mass block 4 to move on the rope 3 and to fix the positions of the mass block 4 and the rope 3 relatively.

[0034] In this example, a driving mechanism is provided on the mass block 4 to drive the mass block 4 to move on the rope 3, and the positions of the mass block 4 and the rope 3 can be relatively fixed to adjust the mass of the damper mass block. For example, two mass blocks 4 are moved and then merged together.

[0035] In some optional embodiments, a through hole is provided in the middle of the mass block 4 for allowing the rope 3 to pass through, and the driving mechanism includes a driving motor and a roller 41. The driving motor is connected to the mass block 4 and is used to drive the roller 41 to rotate, and the roller 41 is used to support the rope 3.

[0036] In this embodiment, a driving motor is arranged on the mass block 4 to drive the roller 41 to rotate, and the roller 41 is made to abut against the rope 3. When the roller 41 rotates, the mass block 4 can be driven to move to adjust the relative position of the mass block 4 with respect to the rope 3.

[0037] In this example, a receiving groove connected to the through hole is further provided in the mass block 4, the driving motor is arranged in the receiving groove, and the roller 41 is partially extended into the through hole and supported on the rope 3. Such a design can make the structure of the mass block 4 more compact.

[0038] In another embodiment, a through hole is provided in the middle of the mass block 4 for the rope 3 to pass through, so that the mass block 4 can move relative to the rope 3 , and a limiting mechanism is provided on the mass block 4 to limit the relative position of the mass block 4 and the rope 3 .

[0039] In this embodiment, when the position of the mass block 4 needs to be moved, the limiting mechanism can be opened to release the limitation of the relative position of the mass block 4 and the rope 3 by the limiting mechanism, and the position of the mass block 4 can be manually moved. When the mass block 4 is moved to the corresponding position, the relative position of the mass block 4 and the rope 3 is limited by the limiting mechanism. Such a design can make the structure simpler. The limiting mechanism can be a clamping member set on the mass block 4, such as a clamp, or a tool similar to a clamp. When the relative position of the mass block 4 and the rope 3 needs to be limited, the clamp is clamped on the rope 3.

[0040] In some optional embodiments, the retracting and releasing mechanism 5 includes two electric winches 51 , which are connected to both ends of the rope 3 and are used for retracting and releasing the rope 3 .

[0041] In this embodiment, when it is necessary to adjust the tension of the rope 3 through the retracting mechanism 5, it can be achieved by adjusting the retracting force of the electric winch 51. When it is necessary to adjust the effective length of the rope 3, it can be achieved by adjusting the position of the electric winch 51 and releasing or retracting part of the length of the rope 3.

[0042] In some optional embodiments, the retracting and extending mechanism 5 further includes an adjusting component 52 , and the adjusting component 52 is used to adjust the distance between the two electric winches 51 .

[0043] In this embodiment, the distance between the two electric winches 51 is adjusted by adjusting the component 52, so that the effective length of the rope 3 can be conveniently adjusted to adjust the control frequency of the entire damper.

[0044] In some optional embodiments, the adjustment assembly 52 includes: a slide rail 521 and two sliding members 522, the slide rail 521 is arranged in the damping box 1 and is arranged parallel to the rope 3 and spaced apart; the two sliding members 522 are slidably arranged on the slide rail 521 and can be fixed relative to each other for installing the electric winch 51.

[0045] In this embodiment, a slide rail 521 is provided at a position parallel to the rope 3, and a sliding member 522 is provided on the slide rail 521 for installing the electric winch 51. Such a design can conveniently adjust the position of the electric winch 51, that is, conveniently adjust the effective length of the rope 3.

[0046] In some optional embodiments, a limiting member 523 is provided on the sliding member 522 , and the limiting member 523 is used to limit the relative position of the sliding member 522 and the slide rail 521 .

[0047] In this embodiment, the sliding member 522 is a sliding seat, which is clamped on the sliding rail 521 and partially overlaps with the sliding rail 521. A screw hole is set on the sliding seat, and the limiting member 523 adopts a bolt matching the screw hole. By tightening it to be supported on the sliding rail 521, the relative position of the sliding member 522 and the sliding rail 521 can be limited. The bolt can be loosened to release the limitation on the relative position of the sliding member 522 and the sliding rail 521.

[0048] In some optional embodiments, the mass block 4 is made of iron, lead or zinc-aluminum alloy.

[0049] In this example, the mass block 4 is cylindrical, and a through hole in the axial direction is arranged in the middle, through which the rope 3 passes, so as to maintain a consistent vibration reduction effect in all directions.

[0050] In some optional embodiments, the rope 3 is a steel strand or a steel wire rope.

[0051] In summary, the damping box 1 is set on the damped part, the mass is provided by the mass block 4, the stiffness is provided by the rope 3, and the damping parameters are provided by the rope 3 and the damping fluid 2. When the control frequency needs to be changed, the effective length and tension of the rope 3 are adjusted by the retracting and releasing mechanism 5, or the position of the mass block 4 on the rope 3 is adjusted, which is equivalent to adjusting the mass of the damper mass block. The damper provided in the present application has a simple structure and can be arranged in multiple directions, such as vertical, horizontal or oblique. The mass block 4 is distributed on the rope 3, and can vibrate up and down, left and right, front and back like a rope. It can control the vibration of 360 degrees in the plane of the vertical rope 3, has a good energy dissipation effect, and can play a good protective role for the engineering structure. The damper has an obvious vibration reduction effect on slender components such as cable structures and suspender structures. The retracting and releasing mechanism 5 can easily adjust the length of the rope 3, and can adjust the tension of the rope 3 through the electric winch 51 to adjust the control frequency of the entire damper. It is convenient and easy to use. With an automatic control system, automatic frequency control can be achieved. When the tension of the rope 3 needs to be adjusted by the retracting mechanism 5, it can be achieved by adjusting the retracting force of the electric winch 51. When the effective length of the rope 3 needs to be adjusted, the position of the electric winch 51 can be adjusted to release or retract part of the length of the rope 3. A slide rail 521 is provided at a position parallel to the rope 3, and a sliding member 522 is provided on the slide rail 521 for installing the electric winch 51. Such a design can facilitate the adjustment of the position of the electric winch 51, that is, the effective length of the rope 3.

[0052] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0053] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0054] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A multi-tuned mass damper with steel strand mass blocks, characterized in that: include: A damping box (1), wherein the damping box (1) is used to contain a damping fluid (2); A rope (3), wherein the rope (3) is arranged in the damping box (1); A plurality of mass blocks (4), each of which is disposed on the rope (3) and can adjust its position relative to the rope (3); A retractable mechanism (5) is connected to the two ends of the rope (3) and is used to adjust the tension of the rope (3) and / or adjust the effective length of the rope (3).

2. The multi-tuned mass damper of the steel strand counterweight according to claim 1, characterized in that: The mass block (4) is provided with a driving mechanism for driving the mass block (4) to move on the rope (3) and can relatively fix the positions of the mass block (4) and the rope (3).

3. The multi-tuned mass damper of the steel strand counterweight according to claim 2, characterized in that: A through hole is provided in the middle of the mass block (4) for allowing the rope (3) to pass through. The driving mechanism comprises a driving motor and a roller (41). The driving motor is connected to the mass block (4) and is used to drive the roller (41) to rotate. The roller (41) is used to abut against the rope (3).

4. The multi-tuned mass damper of the steel strand counterweight according to claim 1, characterized in that: A through hole is provided in the middle of the mass block (4) for the rope (3) to pass through, so that the mass block (4) can move relative to the rope (3). A limiting mechanism is provided on the mass block (4) for limiting the relative position of the mass block (4) and the rope (3).

5. The multi-tuned mass damper of steel strand counterweight according to claim 1, characterized in that: The retractable mechanism (5) comprises two electric hoists (51), and the two electric hoists (51) are respectively connected to two ends of the rope (3) and are used for retracting and releasing the rope (3).

6. The multi-tuned mass damper of the steel strand counterweight according to claim 5, characterized in that: The retractable mechanism (5) further comprises an adjusting component (52), wherein the adjusting component (52) is used to adjust the distance between the two electric winches (51).

7. The multi-tuned mass damper of the steel strand counterweight according to claim 6, characterized in that: The adjustment component (52) comprises: A slide rail (521) is arranged in the damping box (1) and is arranged parallel to and spaced from the rope (3); Two sliding members (522) are slidably disposed on the slide rail (521) and can be relatively fixed, and are used to install the electric winch (51).

8. The multi-tuned mass damper of the steel strand counterweight according to claim 7, characterized in that: The sliding member (522) is provided with a limiting member (523), and the limiting member (523) is used to limit the relative position of the sliding member (522) and the slide rail (521).

9. The multi-tuned mass damper of steel strand counterweight according to claim 1, characterized in that: The mass block (4) is made of iron, lead or zinc-aluminum alloy.

10. The multi-tuned mass damper of steel strand counterweight according to claim 1, characterized in that: The rope (3) is made of steel strands or steel wire ropes.

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