CN217355370U - Nonlinear shock absorber with piecewise linear sleeve - Google Patents

Abstract

The utility model discloses a nonlinear shock absorber with piecewise linearity sleeve relates to shock absorber technical field. Including the sleeve, the sleeve outer wall passes through screw fixed connection in the connecting piece inner wall, and the connecting piece top runs through with the left and right sides and has seted up the through-hole, and the screw runs through in the through-hole, and the connecting piece couples together through fixed knot structure fixed connection, runs through and fixedly connected with steel strand wires around the sleeve, the equal fixedly connected with damping hammer in steel strand wires both ends, and the fixed slot has been seted up to the damping hammer inboard, and the steel strand wires just are fixed in the fixed slot, fixed knot structure include the fixed block, the fixed block set up in the middle of the connecting piece bottom. The utility model discloses the vibration characteristic has strong nonlinearity, has the broad frequency domain, can deal with the drastic change of bad weather, avoids making the jacket structure receive vortex induced vibration to take place structural damage because of single frequency presses down the vibration, and it has simple structure compact's characteristics simultaneously, has improved the installation effectiveness when the damping effect is obvious, has reduced manufacturing cost.

Description

Nonlinear shock absorber with piecewise linear sleeve

Technical Field

The utility model relates to a shock absorber technical field specifically is a nonlinear shock absorber with piecewise linearity sleeve.

Background

In the outdoor construction and construction stage of the large jacket, the construction period of the pipe frame platform is long, and the outdoor construction is easily influenced by the environment. Under strong wind weather, the pipe support platform receives the periodic vibration that the lasting excitation of wind will arouse the member, especially when meeting with bad weather, the platform is in under the strong wind environment for a long time, and powerful wind-force blows the pipeline crosswise, will produce the vortex induced vibration that the karman vortex street phenomenon arouses the platform member in the one side that the member is leeward, and then causes fatigue damage to the member, appears fatigue fracture even, and this will produce very big potential safety hazard to the work progress. At present, passive linear vibration dampers, active vibration dampers and nonlinear vibration dampers with complex structures are adopted in most occasions in engineering.

The above-described tube attaching and detaching method has the following problems: firstly, although the passive damper usually adopts a linear damper, the structure is simple, the passive damper only has a good vibration suppression effect when the natural frequency is the same as the excitation frequency, and the broadband vibration suppression effect is poor; secondly, the active vibration absorber needs to increase the main control force, has external energy input and has poor adaptability under extreme environments; third, non-linear dampers have become more widely used in recent years, but are generally complex and space consuming.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a nonlinear damper with piecewise linearity sleeve to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a non-linear shock absorber with linear telescopic in segmentation, includes the sleeve, and the sleeve outer wall passes through screw fixed connection in the connecting piece inner wall, and the through-hole has been run through to connecting piece top and the left and right sides, and the screw runs through in the through-hole, and the connecting piece gets up through fixed knot structure fixed connection, runs through and fixedly connected with steel strand rope around the sleeve, the equal fixedly connected with damper in steel strand rope both ends, and the fixed slot has been seted up to the damper inboard, and the steel strand rope just is fixed in the fixed slot.

Furthermore, fixed knot constructs including the fixed block, the fixed block set up in the middle of the connecting piece bottom, fixed block and connecting piece are run through respectively about and are seted up first fixed perforation and the fixed perforation of second, run through in first fixed perforation and the fixed perforation of second and be provided with fixing bolt.

Furthermore, first inner barrel grooves are formed in the front side and the rear side of the sleeve, second inner barrel grooves are formed in the front side and the rear side of the sleeve, the steel twisted rope penetrates through the second inner barrel grooves, threaded holes are formed in the top and the left side and the right side of the sleeve, the threaded holes are communicated to the second inner barrel grooves, and the threaded holes are in threaded connection with screws.

Furthermore, the inner diameter of the first inner cylinder groove is larger than that of the second inner cylinder groove, and the diameter of the second inner cylinder groove is equal to that of the steel strand.

Furthermore, the steel stranded rope is formed by twisting a plurality of steel wires, the outer layer of steel wires is twisted rightwards, and the inner layer of steel wires is twisted leftwards.

Furthermore, the connecting piece is fixedly connected to the outer wall of the rod piece in a magnet adsorption fixing or welding fixing mode, and the steel stranded rope is parallel to the rod piece in direction.

Compared with the prior art, the beneficial effects of the utility model are that:

this nonlinear damper with piecewise linear sleeve, owing to adopt above-mentioned scheme, its vibration characteristic has strong nonlinearity, has the broad frequency domain, can deal with the drastic change of bad weather, avoids making the jacket structure receive vortex induced vibration to take place structural damage because of single frequency suppresses the vibration, and it has simple structure compactness's characteristics simultaneously, has improved the installation effectiveness when the damping effect is obvious, has reduced manufacturing cost.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the cross-sectional structure of the interior of the sleeve according to the present invention;

FIG. 3 is a schematic view of the connecting member and the fixing structure of the present invention;

fig. 4 is an installation diagram of the present invention.

In the figure: 1. a rod member; 2. a connecting member; 3. a fixed structure; 301. a fixed block; 302. a first fixed perforation; 303. a second fixing through hole; 304. fixing the bolt; 4. a sleeve; 401. a first inner barrel groove; 402. a threaded hole; 403. a second inner barrel groove; 5. a steel strand; 6. a screw; 7. a damper hammer; 701. fixing grooves; 8. and a through hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

It should be noted that, in the description of the present invention, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of description and simplification of the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Further, it will be appreciated that the dimensions of the various elements shown in the figures are not drawn to scale, for ease of description, and that the thickness or width of some layers may be exaggerated relative to other layers, for example.

It should be noted that like reference numerals and letters refer to like items in the following figures, and thus, once an item is defined or illustrated in one figure, it will not need to be further discussed or illustrated in detail in the description of the following figure.

As shown in fig. 1-4, the utility model provides a technical solution: the utility model provides a nonlinear shock absorber with linear telescopic of segmentation, including sleeve 4, 4 outer walls of sleeve pass through 6 fixed connection of screw in 2 inner walls of connecting piece, 2 tops of connecting piece and the left and right sides run through and have seted up through-hole 8, screw 6 runs through in through-hole 8, connecting piece 2 couples together through 3 fixed connection of fixed knot constructs, it runs through and fixedly connected with strand rope 5 around sleeve 4, the equal fixedly connected with damper 7 in 5 both ends of strand rope, fixed slot 701 has been seted up to damper 7 inboard, strand rope 5 just is fixed in fixed slot 701, it explains that, the effect that connecting piece 2 tops and the left and right sides run through-hole 8 of seting up is, cooperation screw 6 is fixed sleeve 4 and strand rope 5, prevent between strand rope 5 and sleeve 4, relative slip between sleeve 4 and connecting piece 2.

As a specific embodiment, the fixing structure 3 includes a fixing block 301, the fixing block 301 is disposed in the middle of the bottom of the connecting member 2, the fixing block 301 and the connecting member 2 are respectively provided with a first fixing through hole 302 and a second fixing through hole 303 in a left-right penetrating manner, and a fixing bolt 304 is disposed in the first fixing through hole 302 and the second fixing through hole 303 in a penetrating manner.

As a specific embodiment, a first inner cylinder groove 401 is formed in each of the front and rear sides of the sleeve 4, wherein a second inner cylinder groove 403 is further formed in each of the front and rear sides of the sleeve 4, the steel strand rope 5 penetrates through the second inner cylinder groove 403, threaded holes 402 are formed in the top and left and right sides of the sleeve 4, the threaded holes 402 are communicated with the second inner cylinder groove 403, the threaded holes 402 are in threaded connection with the screws 6, the inner diameter of the first inner cylinder groove 401 is larger than that of the second inner cylinder groove 403, the diameter of the second inner cylinder groove 403 is equal to that of the steel strand rope 5, it should be noted that the sleeve 4 is a steel pipe with a variable inner diameter, the first inner cylinder groove 401 is a large inner diameter portion of the sleeve, the second inner cylinder groove 403 is a small inner diameter portion of the sleeve, the small inner diameter is the same as that of the steel strand rope 5, and the large inner diameter, the outer diameter of the sleeve 4 and the length are different due to different vibration characteristics of the vibration absorbers.

As a specific example, the steel stranded rope 5 is formed by twisting a plurality of steel wires, the outer layer steel wire is twisted to the right, and the inner layer steel wire is twisted to the left, it should be noted that the steel stranded rope 5 is formed by twisting 19 thin steel wires, and the specific length and diameter are different according to different sizes of shock absorbers.

As a specific example, the connecting member 2 is fixedly connected to the outer wall of the rod member 1 by means of magnet adsorption or welding, the steel stranded rope 5 is parallel to the rod member 1, and it should be noted that the vibration of the rod member 1 is transmitted to the present non-linear damper with the segmented linear sleeve 4.

As a specific example, the damper hammer 7 is connected to the apparatus main body through a steel wire 5. The steel strand wires with reasonable size and the vibration reduction hammer with reasonable mass can have good vibration characteristics and absorb vibration energy on the rod piece 1.

It should be noted that, through the setting of this device, its vibration characteristic has strong nonlinearity, has the broad frequency domain, can deal with the drastic change of bad weather, avoids making the jacket structure receive vortex induced vibration to take place the structural damage because of single frequency suppresses the vibration, and it has simple structure compact characteristics simultaneously, has improved the installation effectiveness when the damping effect is obvious, has reduced manufacturing cost.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. A non-linear damper with a segmented linear sleeve, comprising a sleeve (4), characterized in that: sleeve (4) outer wall passes through screw (6) fixed connection in connecting piece (2) inner wall, connecting piece (2) top and left and right sides run through and have seted up through-hole (8), screw (6) run through in through-hole (8), connecting piece (2) get up through fixed knot structure (3) fixed connection, run through and fixedly connected with steel strand rope (5) around sleeve (4), the equal fixedly connected with damping hammer (7) in steel strand rope (5) both ends, fixed slot (701) have been seted up to damping hammer (7) inboard, steel strand rope (5) just are fixed in fixed slot (701).

2. The non-linear damper with a segmented linear sleeve of claim 1, wherein: fixed knot constructs (3) including fixed block (301), fixed block (301) set up in the middle of connecting piece (2) bottom, fixed block (301) and connecting piece (2) are left right to run through respectively and have been seted up first fixed perforation (302) and the fixed perforation of second (303), run through in first fixed perforation (302) and the fixed perforation of second (303) and be provided with fixing bolt (304).

3. The non-linear damper with a segmented linear sleeve of claim 1, wherein: first inner barrel groove (401) have all been seted up to sleeve (4) front and back both sides, wherein have still seted up second inner barrel groove (403), steel strand rope (5) run through in second inner barrel groove (403), and threaded hole (402) have all been seted up to the top and the left and right sides of sleeve (4), and threaded hole (402) communicate to second inner barrel groove (403), and threaded hole (402) pass through threaded connection with screw (6).

4. A non-linear damper with a segmented linear sleeve as set forth in claim 3 wherein: the inner diameter of the first inner cylinder groove (401) is larger than that of the second inner cylinder groove (403), and the diameter of the second inner cylinder groove (403) is equal to that of the steel strand (5).

5. The non-linear damper with a segmented linear sleeve of claim 1, wherein: the steel stranded rope (5) is formed by twisting a plurality of steel wires, the outer layer of the steel wires is twisted rightwards, and the inner layer of the steel wires is twisted leftwards.

6. The non-linear damper with a segmented linear sleeve of claim 1, wherein: the connecting piece (2) is fixedly connected to the outer wall of the rod piece (1) in a magnet adsorption fixing or welding fixing mode, and the steel stranded rope (5) is parallel to the rod piece (1) in direction.

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